Illumination device, display device and television receiver

FIELD: physics.

SUBSTANCE: device has a holder (11) which attaches a mounting plate (21) to a backlight base (41) while covering at least the edge (21S) of the mounting plate (21) on the backlight base (41), said edge being situated in the direction of the short side of the mounting plate. The surface of the mounting plate covered by the holder has a non-uniform reflection area which can be in form of a connector or a terminal.

EFFECT: improved uniformity of the amount of light from the backlight unit.

21 cl, 39 dwg

 

The technical field to which the invention relates.

The present invention relates to a lighting device, display device and television receiver.

The level of technology

The liquid crystal display device (display device), which includes non-luminous liquid crystal display panel (display panel), also includes a backlight unit for supplying light to the liquid crystal display panel. The backlight unit includes the light source of one or multiple types, one example is light-emitting diodes (LEDs).

Typically, when the LEDs emit light, they also create heat. Heat is one of the factors which reduces the efficiency of light emission of the LEDs. To cope with this, in block 149 backlight, as shown in Fig, circuit Board 121 on which are mounted the LEDs are maintained in tight contact with the base 141 of the rear lights, which dissipates heat. This design allows the heat present in the LEDs and the heat that was transferred to the mounting boards 121, on the basis of 141 backlight (i.e. heat output of the LEDs and circuit boards 121).

As shown in Fig, in block 149 backlight for cu is building the base 141 of the rear lights to the mounting boards 121 used mounting screws 191. This mount using mounting screws 191, requires to use at least one mounting screw 191 for each circuit Board 121. This increases the cost of the block 149 backlight and complicates the manufacturing process of block 149 backlight.

As improvements in block 149 backlight described in patent document 1, as shown Fig, do not use mounting screws for mounting the circuit Board 121 to the base 141 of the rear lights. Specifically, as shown in Fig and 20, the element A the Foundation of the first layer having a hole, superimposed on top of the element V the base of the second layer, so that the base 141 backlight has a groove dh. In the groove dh installed mounting plate 121 (see Fig and 21). With this design not only displays the heat from the LEDs 122 and circuit boards 122, but also the circuit Board 121 are attached to the base 141 of the rear lights without mounting screws. This unit 149 backlight, therefore, is not only easy to produce but also achieves the best heat dissipation.

The list of references

Patent literature

Patent document 1: JP-A-2008-60204

The invention

Technical problem

Each mounting plate 121 is installed with a connector for receiving electric current from the circuit, such as an external history is nick power. For example, in the circuit Board 121, as shown in Fig, the connector is usually provided on its mounting surface 121U, near the edge of the circuit Board 121 in the direction of its shorter side. In this circuit Board 121 of the light from the LEDs 122 is irregularly reflected by the connector, and it has a tendency that leads to the problem of the uneven amount of light in the light from the block 149 backlight.

The problem can be solved by the installation of the connector on the reverse surface B opposite to the mounting surface 121U. Even when the connector is installed on the reverse surface V, however, terminals or the like, which are connected with the connector, can be exposed on the mounting surface 121U and can cause irregular reflection. The edges of the mounting Board 121 in the direction of its shorter side, which are located close to the LEDs, also tend to cause irregular reflection.

The present invention was created to solve the above problem, and an aim of the invention is the provision of lighting devices, etc. that achieve reduced unevenness in quantity of light.

Solution

The lighting device includes: a light source; a circuit Board on which the light source; and a base, the and circuit Board which is installed. In this case, the lighting device additionally includes a holder that secures the mounting plate to the base, at the same time, covering at least the edge of the circuit Board on the base along the direction of the shorter side of the circuit Board.

With this design, the edge of the circuit Board along the direction of its shorter side, which, if he accepts the light from the light source tends to cause irregular reflection, is covered by the holder. Thus, the light from the lighting device is less likely includes the uneven amount of light, resulting in uneven reflection. In addition, because only the holder is placed over the circuit Board, may fix the mounting plate to the base, it is possible to improve the production efficiency of the lighting device and to achieve cost reduction.

On the surface of the circuit Board, cover with holder, can be mounted area irregular reflection (for example, a connector or terminal). With this design the lighting device generates light comprising less uneven quantity of light.

It is preferable that the circuit Board includes many circuit boards, and the holder covers many circuit boards together on it one is the end and thus engages with multiple circuit boards to hold the circuit boards are fixed relative to the base.

With this design many circuit boards are held stationary relative to the base, and, thus, not required, for example, a screw or the like for attaching each mounting plate to the base. Thus, simply by mounting the holder to the base of many circuit boards are fixed relative to the base.

In addition, the retention of a mounting plate in contact with the ground increases the area on which heat can dissipate, and thus, heat that is present in the circuit Board, you may get inexpensive way. In addition, the holder secures the many circuit boards together to the base, and this facilitates the manufacture of the lighting device.

It is preferable that, let the surface on which you are installing the mounting plate, called the installation surface, then the lighting device additionally includes a first section gear that performs contact with the circuit Board and, thus, restricts the movement of the circuit Board in at least one direction among the directions in the plane of the mounting surface.

It is preferable that the first area of engagement of the issue who play contact with the mounting surface of the circuit Board, and thus, restricts the movement of the circuit Board with the mounting surface.

It is preferable that the inside of the holder, which is hollow, is formed reinforcing portion which is connected with at least two inner side surfaces. With this construction, the holder has an increased rigidity.

In addition, the reinforcing section may constitute the first section of the engagement.

It is preferable that the holder is hollow and has a hole at the bottom, and the first section of the mesh represents at least one of the side walls constituting the edge of the hole, and a first cutout formed in the side wall.

It is preferable that, let the part of the circuit Board that performs contact with the first sector gear, a second area of engagement, then the second segment is gearing represents at least one mounting surface of the circuit Board, the edges of the mounting Board and the second cutout formed at the edge.

It is preferable that the second notch includes a second notch formed respectively on one and on the other of the opposite ends of the circuit Board, and the first cut on one end and the first cut on the other end have an identical form. With this design can easily be formed by the second cut.

predpochtitelno, that circuit Board is linear, the second cut on one end is formed on one of the two longer sides of the circuit Board along the direction of its longer sides, and the second cut on the other end formed on the other of the two longer sides of the circuit Board along the direction of its longer sides.

With this construction, the holder includes a first notch corresponding to the second notch may engage with linear mounting plate at its both ends. Thus, two identical holder can hold the mounting plate is stationary, and this contributes to cost reduction of the holders. The use of identical holders separately also facilitates the production of lighting devices.

Preferably, the holder includes holders provided respectively on one and on the other of the opposite ends of the mounting plate and the mounting plate is installed between the holders and, thus, is kept fixed. With this design, the mounting plate is firmly held motionless.

It is preferable that the inside of the holder, which is hollow, is formed reinforcing portion which is connected with at least two inner side surfaces, and an amplifying section divides the inner space of the holder section is military space at the same time allowing the separated spaces to communicate with each other. With this design the air inside of the holder is not stagnant and the mounting plate is easy to cool.

It is preferable that the mounting surface of the circuit Board is formed of a reflective film. It is preferable that the mounting surface of the circuit Board is first reflective sheet. In such constructions the light falling on the mounting surface, is reflected and propagates back and, thus, is not consumed uselessly.

Preferably, between the mounting plate and the base of the inserted second reflective sheet. It is preferable that the substrate is formed from a reflective material. With such constructions the light falling on the surface where the mounting plate, is reflected and propagates back and, thus, is not consumed uselessly.

The display device includes a display panel (for example, a liquid crystal display panel), receiving light from the lighting device, as described above, falls under the scope of the present invention. Television receiver including such a display device, falls under the scope of the present invention.

Useful effects of the invention

According to the present invention the holder BAP is it the mounting plate to the base, at the same time concealing the edge of the circuit Board along the direction of its shorter side, which tends to cause irregular reflection. This allows the lighting device to generate light, which includes less uneven quantity of light. In addition, only the holder is placed over the circuit Board, allows fastening the mounting plate to the base, and this facilitates the manufacture of the lighting device.

Brief description of drawings

Figure 1 is an exploded perspective view depicting a portion of the backlight unit shown in Fig;

figa is an exploded top view of the holders and circuit boards, when viewed from the mounting surface of circuit boards;

figv is an exploded top view of the holders and circuit boards, if you look from the back surface of the circuit Board;

figs is a top view depicting how the holders hold the circuit Board is fixed;

figa is a view in section along the line A1-A1', figa-2C, when viewed from the indicated arrow direction;

FIGU is a view in section along the line A2-A2', figa-2C, when viewed from the indicated arrow direction;

figs is a view in section along the line 3-A3' figa-2C, when viewed from the indicated arrow direction;

figa is a top view depicting an example of the circuit Board;

FIGU is a top view depicting an example of the circuit Board;

figa is an exploded top view of the holders and circuit boards, when viewed from the mounting surface of circuit boards;

figv is an exploded top view of the holders and circuit boards, if you look from the back surface of the circuit Board;

figs is a top view depicting how the holders hold the circuit Board is fixed;

figa is a view in section along the line B1-B1', figa-5C, when viewed from the indicated arrow direction;

FIGU is a view in section along the line B2-B2', figa-5C, when viewed from the indicated arrow direction;

figs is a view in section along the line B3-B3' figa-5C, when viewed from the indicated arrow direction;

figa is a top view depicting an example of the circuit Board;

FIGU is a top view depicting an example of the circuit Board;

figa is an exploded top view of the holders and circuit boards, when viewed from the mounting surface of circuit boards;

figv represents p the component top view of the holders and circuit boards, if you look from the back surface of the circuit Board;

figs is a top view depicting how the holders hold the circuit Board is fixed;

figa is a view in section along the line C1-C1' figa-8C, when viewed from the indicated arrow direction;

FIGU is a view in section along the line C2-C2' figa-8C, when viewed from the indicated arrow direction;

figs is a view in section along the line C3-C3' figa-8C, when viewed from the indicated arrow direction;

figa is a top view, showing the holder holds the circuit Board is fixed;

FIGU is a view in section of the holder shown in figa, along the line D-D', when viewed from the indicated arrow direction;

figs is a view in section, depicting another example figv;

figa is a top view, showing the holder holds the circuit Board is fixed;

FIGU is a view in section of the holder shown in figa, along the line E-E', when viewed from the indicated arrow direction;

figa is a top view, showing the holder holds the circuit Board is fixed;

FIGU is a view in section of the holder shown in figa, the line is F-F', when viewed from the indicated arrow direction;

figs is a view in section, depicting another example figv;

Fig is a perspective view of the bottom surface of the base backlight;

Fig is a perspective view showing the connectors of the regional type;

Fig is a perspective view depicting the base of the rear lights, including protruding parts;

Fig is an exploded perspective view of the liquid crystal display device;

Fig is an exploded perspective view of the television with liquid crystal display (LCD)includes a liquid crystal display device;

Fig is a view in section of a conventional backlight unit;

Fig is a view in section of a conventional liquid crystal display device;

Fig is a top view of the plate of the heat sink; and

Fig is a top view of the plate of the heat sink, on which the mounting plate.

Description of embodiments

[Option 1 implementation]

The present invention is described below by means of embodiments with reference to the accompanying drawings. For the sake of convenience, shading and position in the GDS fall, in this case, reference should be made to any other relevant drawing; also, for the sake of convenience, hatching is sometimes used in another place of the slit.

Fig depicts TV 89 liquid crystal display (LCD)includes a liquid crystal device 69 display (display device). LCD TV 89 receives a television broadcast signal and displays the image; thus, an LCD TV 89 is a television receiver. Fig is an exploded perspective view depicting the liquid crystal display device. As there shown, the LCD device 69 display includes a liquid crystal panel 59 display (display panel), block 49 backlight (lighting device), which supplies the light to the liquid crystal panel 59 display, and a housing HG (front housing HG1 and the rear housing HG2 between which they are held.

The liquid crystal panel 59 display consists of a substrate 51 active matrix, which includes switching elements such as TFT (thin film transistors), and the opposite substrate 52, which is positioned opposite the substrate 51 active matrix bonded together through a seal is element (not shown). The gap between the two substrates 51 and 52 is filled with liquid crystal (not shown).

Each of the input surface of the light substrate 51 of the active matrix and the surface of the output light of the opposite substrate 52 is installed polarizing film 53. Performed as described above, the liquid crystal panel 59 display displays an image by using the change of transmittance resulting from the tilt of liquid crystal molecules.

Then follows the description of the block 49 backlight, which is located directly under the liquid crystal panel 59 display. Block 49 rear lights includes led modules (light-emitting modules MJ, the base 41 of the rear lights, the holders 11, the reflecting sheet 42, the scattering plate 43, the sheet 44 with prisms and the sheet 45 with the microlenses.

Led module MJ includes a circuit Board 21, the LEDs (light emitting diodes) 22 and lens 23.

Each mounting plate 21 is a rectangular sheet-like charge (i.e. linear cost), and on its mounting surface 21U there are many electrodes (not shown). These electrodes are installed LEDs 22 as light-emitting elements. On the mounting surface 21U of the mounting circuit Board 21 is formed resista film (not shown) as a protective plank is. Resista film is preferably, but is not limited to, white, to be reflective.

The reason is that, when the light falling on resistol film, reflected on resistol film and extends back, eliminating the absorption of light mounting plate 21, which is the cause of the uneven amount of light. When not formed resista film, coating the mounting surface 21U reflective sheet (the first reflective sheet) creates an effect similar to that created resistol film. The reflecting sheet may be used in addition to resistol film.

Many circuit boards 21 are arranged side by side in the direction crossing the direction of a longer side (linear direction). The direction of the longer side is referred to as the X direction, the direction of arrangement is referred to as the Y direction, and the direction crossing both directions X and Y, referred to as the z direction. edge of the circuit Board 21 along the direction of its longer side is referred to as edge 21L longer sides, and the edge of the circuit Board 21 along the direction of its shorter side (aligned with the Y direction) is referred to as edge 21S shorter side.

The LEDs 22 are used as the light source and emit light by receiving electric t the spacecraft by means of electrodes on the circuit boards 21. The LEDs 22 can be any of various types, including those listed below. For example, the LEDs 22 can be those that include a LED chip (light emitting chip)emitting blue light, combined with a phosphor (fluorescent substance), receiving light from the LED chip and emitting yellow light by fluorescence (no specific restrictions on the number of LED crystals on the led). These LEDs 22 create white light as a mixture of light from the LED chip, emitting blue light and the light emitted by fluorescence.

The phosphor used in the light-emitting diodes 22, however, is not limited to those that emits yellow light by luminescence. For example, the LEDs 22 may, instead, include LED-crystal, emitting blue light, combined with phosphors, receiving light from the LED chip and emitting green and red light respectively through luminescence, and to create white light as a mixture of the blue light from the LED chip and the light (green and red light)emitted by luminescence.

LED-crystal-emitting diodes 22 is not limited to that emits blue light. For example, the LEDs 22, instead, may include LED-crystal red glow, radiant red is wet, and LED-crystal blue glow emitting blue light, combined with the phosphor receiving the light from the blue LED chip and emitting green light by luminescence. These LEDs 22 create white light as a mixture of red light from LED-crystal red glow of blue light from the LED crystal blue light and green light emitted via luminescence.

The LEDs 22 may not include a phosphor. For example, the LEDs 22 can include LED-crystal red glow, emitting red light, LED crystal green glow, emitting green light, and LED-crystal blue glow emitting blue light, and white light as a mixture of light of all these LED crystals.

Thirteen (13) of the LEDs 22 are arranged in a row along the X direction and electrically connected in series. These 13 LEDs 22, connected in series, electrically connected in parallel with other 13 LEDs 22, connected in series in the row adjacent in the direction Y. the LEDs 22 is thus arranged in a matrix, are excited in parallel.

Lens 23 take and pass (allow) the light from the LEDs 22. Specifically, each lens 23 has on its side the back side (the surface of the light input) enclosing the recess, which may amestica led 22, and is placed over the led 22, and the accommodating recess aligned with the led 22.

Thus, the led 22 is built into the lens 23 so that light from the led 22 of course served in the lens 23. Most of the light supplied thus emerges from the lens 23 through the lens surface. There are no particular restrictions on the material of the lens 23, in this example is an acrylic resin.

As shown in Fig, the base 41 of the backlight, for example, is a box-shaped element, the bottom surface 41C (installation surface) which is located on the circuit boards 21 (node, consisting of led modules MJ, installed on the base 41 of the rear illumination, referred to as e-node PG). Thus, the base 41 of the rear lights accommodates multiple led modules MJ. The bottom surface 41C of the base 41 of the backlight can optionally be installed with base pins (not shown in Fig) to support the diffusing plate 43, sheet 44 with prisms and sheet 45 with the microlenses.

The base material 41 of the backlight may be metal or resin. When it is a metal with a relatively low reflectivity, it is preferable that the reflecting sheet (the sheet with a reflectivity of 85% or more, more preferably 95% or more) was inserted between the lower is her surface 41C of the base 41 of the rear lights and the circuit Board 21.

The reason is that, thanks to the creation of such a reflecting sheet lower surface (second reflecting sheet), any portion of light emitted from the lens 23, which extends to the bottom surface 41C of the base 41 of the rear lights, reflected on the reflective sheet to be used as a backlight without useless spending. In the case where the substrate 41 of the backlight is made of resin with approximately the same reflectivity as that of the reflective sheet, reflective sheet can be excluded (even in the case where the substrate 41 of the backlight is made of a reflective resin, the reflecting sheet may be additionally inserted between the bottom surface 41C of the base 41 of the rear lights and the circuit Board 21.

The holders 11 are placed over the mounting plates 21 on the base 41 of the rear lights (specifically, on the bottom surface 41C) and thus secure them to the base 41 of the rear lights. In particular, the holders 11 is attached to the base 41 of the backlight by using parts of the circuit boards 21 (for example, all circuit boards 21 in the direction of their longer sides), inserted between them, and thus, the mounting plate 21 is secured to the lower surface 41C of the base 41 backlight (details below).

When the holders 11 are located on both on the bottom and on the other ends of the circuit boards 21 in the direction of their longer sides, the scattering plate 43, the sheet 44 with prisms and the sheet 45 with microlenses placed in a pile on top plots UW holders 11 to be supported on the holders 11.

There are no specific restrictions on how the holders 11 are mounted (attached) to the base 41 of the rear lights. For example, the holders 11 and the base 41 of the backlight can be tightened together by screws. Instead, the mechanism of the connection may be established between the holders 11 and the base 41 of the backlight, so that the connection mechanism connects them together. Instead, the fastening element for connecting together the liquid crystal panel 59 of the display and the base 41 of the backlight can be designed to be attached to the base 41 of the rear lights, not only the liquid crystal panel 59 display, but also the holders 11.

Reflective sheet 42 is a box-shaped optical sheet, which has a reflective surface 42U on its lower surface, and closes the multiple led modules MJ, located in a matrix, the surface of the reflective sheet 42 opposite the reflective surface 42U facing the led modules MJ. Reflective sheet 42 is determining the clearance holes 42H in positions corresponding to the lenses 23 of the led modules MJ, so that the lens 23 are opened through the reflective surface 42U (also may be formed of holes, who do open above the support pins or the like).

Thus, any portion of light emitted from the lens 23, which extends to the bottom surface 41C of the base 41 of the rear lights, reflected on the reflective surface 42U of the reflecting sheet 42 to extend from the bottom surface 41C. Thus, by creating a reflective sheet 42, the light from the LEDs 22 is distributed to the diffusing plate 43 opposite the reflective surface 42U without useless spending.

The scattering plate 43 is an optical sheet laid in a pile on the reflective sheet 42, and diffuses light emitted from the led modules MJ, and the light reflected from the reflective surface 42U. I.e. the scattering plate 43 diffuses the planar light formed by the multiple led modules MJ to distribute light over the entire area of the liquid crystal panel 59 display.

Sheet 44 prism is an optical sheet laid in a pile on the scattering plate 43. Sheet 44 with prisms, for example, has a triangular prism, with each pass in one direction (linearly), located side by side, in the plane of the sheet surface in a direction crossing the one direction. Thus, the sheet 44 with prisms modifies the properties of light propagation from russiavalentina 43. It is preferable that the prism continue in the Y-direction, i.e. in the direction in which the circuit Board 21 are arranged side by side, and are arranged side by side in the X direction, i.e. in the direction in which the pass circuit Board 21.

Sheet 45 with the microlenses is an optical sheet laid in a pile on the sheet 44 with prisms. Fox 45 with microlenses has dispersed therein small particles that refract and thus scatter light. Thus, the sheet 45 with microlenses prevents local concentration of light from the sheet 44 with prisms and, thus, reduces the differences between bright and dim parts (the uneven amount of light).

In block 49 backlight, performed as described above, the planar light formed by the multiple led modules MJ, passes through the plurality of optical sheets 43-45 and served on the liquid crystal panel 59 display. Taking light (back light) from block 49 backlight, the liquid crystal panel 59 display provides enhanced display.

Now the detailed description of the holders 11 and the circuit Board 21 of the led modules MJ with reference to figures 1, 2A-2C and 3A-3C (block 49 backlight shown in these drawings, is considered as an option for implementation 1 (EX1)).

Figure 1 represents a generation who pointy perspective view of the block 49 backlight, shown in Fig. For the sake of convenience, the led modules MJ are represented, mainly, some circuit boards 21. Also for the sake of convenience, it is assumed that the holders 11 are of such dimensions to install, as shown on the drawings, three circuit Board 21 on the base 41 of the rear lights.

Figa is an exploded top view (exploded front view), when viewed from the mounting surface 21U of the mounting boards 21. Figv is an exploded top view (exploded front view), if you look from the back surface 21B of the mounting circuit Board 21 opposite to the mounting surface 21U. Figs is a top view depicting how the holders 11 to hold the mounting plate 21 fixed (if you look from the back surface 21B of the mounting boards 21).

Figa is a view in section along the line A1-A1', figa-2C, when viewed from the indicated arrow direction. FIGU is a view in section along the line A2-A2', figa-2C, when viewed from the indicated arrow direction. Figs is a view in section along the line A3-A3' figa-2C, when viewed from the indicated arrow direction (each of these drawings is accompanied by a view of the side holders 11, and the cut is indicated by shading).

As shown in these drawings, the holder is 11 has the shape of a bar and has a hollow design. In particular, the holder 11 has four side walls SW1-SW4 and the upper portion of the UW. Four side walls SW1-SW4 are raised from the bottom surface 41C of the base 41 of the rear lights, and are joined together to form a frame. The upper portion of the UW connects with the upper edge of the side walls SW1-SW4, forming the frame to close the hollow space formed by four side walls SW1-SW4.

Of the four side walls SW1-SW4 three SW1-SW3 rise in the same direction, while the fourth SW4 rises in a direction inclined relative to the direction in which rise the other three SW1-SW3. In particular, the side wall SW4 tilted, as if leaning to the side wall SW1, which is the average of the three side walls SW1-SW3, connected one to the next, and, as a result, the side wall SW4 rises in a direction inclined relative to the direction in which rise three walls SW1-SW3 (the overall shape formed by the four side walls SW1-SW4, forming a frame, therefore, falls on the cone).

The upper portion of the UW has an edge RB. The rib RB has a total length equal to the width of the outer side surface of the side wall SW1 and has a surface flush with the external lateral surface. The surface of the ribs RB at one end in the direction of its overall length is flush with the outer side surfaces of the Bo the OIC wall SW2, and the surface of the ribs RB at the other end in the direction of its overall length is flush with the outer side surface of the side wall SW3 (the surface of the ribs RB at one end has a shorter side, the external side surface of the side wall SW2, and the surface of the ribs RB on the other end has a shorter side, the external side surface of the side wall SW3).

Thus, the rib RB raised from the surface of the upper section UW along its edge adjacent to the side wall SW1 to be in the form of the bar. The rib RB limits the position of the optical sheets 43-45, placed on the upper plot UW.

The holder 11 has a hole HL around the edge of the side walls SW1-SW4, where there is the upper portion of the UW. I.e. the holder 11 is a hollow cap having a hole HL in the lower part. On the edge of the hole HL (i.e. at the edge of the side walls SW1-SW4, forming a frame) formed by the notches 15 on the side of the holder (the first cut), which engages with the mounting plates 21.

The notch 15 on the side of the holder (the first cut), for example, is shaped like a square bracket ("[") and formed on the side wall SW4, determines the part of the hole HL. Specifically, the notch is made from the edge of the side wall SW4, defining the edge of the hole HL, to the upper part of UW, and thus is formed the notch 15 on the side of the holder (the depth Ah grooves is slightly greater than the thickness Tb of the circuit Board 21). The number of grooves 15 on the side of the holder corresponds to the number of circuit boards 21, which should be attached to the base 41 of the rear lights. Thus, as shown in figa-3C, the side wall SW4 has a comb-like shape.

On the other hand, on the circuit Board 21 is formed by the notches 25 on the side of the Board (second cut), which engages with the notches 15 on the side of the holder. The cutout 25 on the side of the Board, for example, is shaped like a square bracket ("["), and formed in the grooves made from the edge 21L longer side of the circuit Board 21 to the other end 21L longer side. Depth Wb cutout 25 on the side of the Board is slightly greater than the thickness Th of the side wall 4 of the holder 11.

The width Wh of the notch 15 on the side of the holder is determined so as to correspond to the minimum length from the bottom of the cutout 25 on the side of the Board to the other edge 21L longer side of the circuit Board 21. Specifically, the width Wh of the notch 15 on the side of the holder slightly to the difference between the length of the shorter side of the circuit Board 21 (the length of the edge 21S shorter side) and depth Ab cutout 25 on the side of the Board. The interval Ih between adjacent notches 15 on the side of the holder in the holder 11 more depth Ab cutout 25 on the side of the Board.

Due to the formation of the notch 15 on the side of the holder and the cutout 25 on the side of p the ATA, the holder 11 and the mounting plate 21 (and, consequently, the led module MJ) are engaged with each other.

For example, the mounting plate 21 is located on the bottom surface 41C of the base 41 of the backlight, so that the cutout 25 on the side of the Board is located in the position where you wish to place the notch 15 on the side of the holder in the holder 11. When the holder 11 is placed over the circuit Board 21 on the base 41 of the rear lights, the lower part of the notch 15 on the side of the holder is aligned with the part mounting surface 21U, located in the direction in which the cutout 25 on the side of the Board so that the contour of the notch 15 on the side of the holder is installed around and, thus, is engaged with a part of the circuit Board 21 from the lower part of the recess 25 on the side of the Board to the edge (edge 21L longer side)opposite from this bottom, the mounting plate 21 along the direction of its longer side (see figs). Thus, the holder 11 at the same time covering (hiding) edge 21S shorter side of the circuit Board 21, attaches the mounting plate 21 to the base 41 of the rear lights.

I.e. the holder 41 overlaps together many circuit boards 21 on one end (for example, one end of the circuit boards 21 in their direction of longer side), and thus engages with many mounting PLA is 21, to hold the circuit Board 21 is fixed relative to the base 41 of the rear lights.

With this design, the edge 21S shorter side (edge along the direction of the shorter side) of the circuit Board 21, which tends to cause irregular reflection, if it takes the light from the LEDs 22, is covered by the holder 11. Thus, the light from block 49 backlight no longer contains the irregularly reflected light is attributed to the edge 21S shorter side, and, therefore, block 49 backlight generates light comprising less uneven quantity of light.

The mounting plate 21 includes a wiring (not shown) for supplying electrical current to the LEDs 22, and a connector 28 for receiving electric current from the external power source is connected to the transaction. Therefore, preferably, as shown in figs that, the holder 28 is also covered. The reason is that the holder 28 also has a tendency to irregularly reflect the light from the LEDs 22 (this construction is effective even when the connector 28 is formed from a light absorbing material).

In block 49 backlight, performed as described above, many circuit boards 21 are held stationary relative to the base 41 of the backlight, and thus, no need for the screw or the like for attachment of each circuit Board 21 to the base 41 of the rear lights. Thus, solely by means of screws, by means of which the holder 11 is attached to the base 41 of the rear lights, many circuit boards 21 is fixed to the base 41 of the rear lights.

Therefore, the formation of the base 41 of the rear lights from a material with relatively high heat dissipation (e.g., metal) allows the block 49 backlight display heat that is present in the led modules MJ (i.e. the LEDs 22 and the circuit boards 21) inexpensive manner without the use of screws or the like in Addition, since the holder 11 holds together the many circuit boards 21 to the base 41 of the rear lights, the unit 49 backlight is easy to produce.

In the above-described structure where the mounting plate 21 is held stationary by means of the holder 11 relative to the base 41 of the rear lights, moving the circuit Board 21 in the X direction is limited by contact between the side wall SW4 (specifically, the outer and inner side surfaces of the side wall SW4) and the opposite edges in Samoobrona the contour of the cutout 25 on the side of the Board. Moving the circuit Board 21 in the Y direction is limited by contact between the opposite edges in the contour of the notch 15 on the side of the holder and the lower part of the recess 25 on the side of the Board and the edge 21L longer sides, the opposite in regards to this lower part of the mounting Board 21.

That is, the outer and inner side surfaces of the side wall SW4 and the opposite edge in the contour of the notch 15 on the side of the holder perform contact with the circuit Board 21 and, thus, restrict the movement of the circuit Board 21 in the X and Y directions among the directions in the plane of the bottom surface 41C of the base 41 of the rear lights. In this case, the side wall SW4, defining the edge of the hole HL, and the notch 15 on the side of the holder, formed in the side wall SW4, constitute the first section of the engagement.

In addition, in the side wall SW4 includes a notch 15 on the side of the holder constituting the first section of the gearing, the lower part of the notch 15 on the side of the holder performs contact with the mounting surface 21U and, thus, restricts the movement of the circuit Board 21 in the direction Z. Thus, the mounting surface 21U, edge (e.g. edge 21L longer side) of the mounting Board 21 and the notch 25 on the side of the Board, formed on the edge, do contact with the side wall SW4, and thus, the mounting plate 21 is held stationary, not only in directions in the plane of the bottom surface 41C of the base 41 of the rear lights, but also in directions crossing these directions in the plane (mounting surface 21U, the edge of Antanas Board 21 and the notch 25 on the side of the Board, formed on the edge, make up the second section of the mesh).

In the above description, the holders 11 are located on both ends of the circuit boards 21 in the direction of their longer sides. Thus, the circuit Board 21 are located between the two holders 11 and thus more stably held stationary. It is, however, not meant as any limitation.

For example, assuming it is similar to the holders 11, shown in figure 1, only the holder 11 can hold many circuit boards 21 fixed in all directions, including directions X, Y and Z simultaneously, as described above. Placing the sole holder 11 on top of the circuit Board 21, so that the circuit Board 21 mounted on the base 41 of the rear lights, enhances the efficiency of the production unit 49 backlight (production efficiency is increased compared to, for example, with the case where each circuit Board 21 is mounted by means of mounting screws on both ends).

When the fastening screws or the like are used for mounting circuit boards 21 to the base 41 of the rear lights, you need a lot of fixing screws or the like, and it has a tendency, which leads to higher cost. Conversely, when the holder is used to increase the population of circuit boards 121 to the base 41 of the backlight, no mounting screws or the like, and this contributes to reducing the cost.

When two holders 11 are used to hold multiple circuit boards 21 is stationary, as shown in figa, the notches 25 on the side of the Board, formed on both ends of each circuit Board 21 in the direction of its longer sides, have the same shape. This contributes to the simplification of the processing for the formation of notches 25 on the side of the Board in circuit boards 21.

In addition, as shown in figa, the cutout 25 on the side of the Board on one end of each mounting plate 21 in the direction of its longer sides formed on one of its two edges 21L longer side, and the notch 25 on the side of the Board at the other end of each circuit Board 21 in the direction of its longer side is formed at the other of its two edges 21L longer side.

With this design, as shown in figure 1, the holder 11 is located at one end of the circuit Board 21, and the holder 11, located on the other end of the circuit boards 21, can be made identical (i.e. through the use of holders 11 one design, circuit Board 21 can be secured at both ends in the direction of their longer sides). It is, however, not meant as any limitation; as shown in figv, the notches 25 on the side of the armor can be formed only on one edge 21L longer sides, at both ends, respectively.

The side wall SW4 holder 11 is inclined relative to the side wall SW1 in front of her. It is, however, not meant as any limitation. For example, the side wall SW4 may be parallel to the side wall SW1. When the holder 11 is formed from a reflective material, however, if the external lateral surface of the side wall SW4 inclined to the liquid crystal panel 59 display (to look up at her, the light from the LEDs 22 is reflected on the outer side surface to spread, more likely, to the liquid crystal panel 59 display.

[Option 2 implementation]

The following describes the second version of the implementation. Such elements, which have their functional counterparts in the embodiment 1 of implementation, are denoted by the same positions, and their description is not repeated.

In option 1 the implementation of the cutout 25 on the side of the Board is formed in the form of grooves, which are made only on the edge 21L longer side of the circuit Board 21. It is, however, not meant as any limitation. For example, as shown in figa-5C, the cutout 25 on the side of the Board can be formed in the form of grooves, which are made as at the edge 21L longer sides and on the edge 21S shorter side. Specifically, the cutout 25 on the side of the Board may be L-about asny path.

This cutout 25 on the side of the Board is described below with reference to figa-5C and 6A-6C (block 49 backlight shown in these drawings, is considered as a second option implementation (EX 2)). Figa-5C are views similar to figa-2C, respectively.

Figa is a view in section along the line B1-B1', figa-5C, when viewed from the indicated arrow direction. FIGU is a view in section along the line B2-B2', figa-5C, when viewed from the indicated arrow direction. Figs is a view in section along the line B3-B3' figa-5C, when viewed from the indicated arrow direction (each drawing is accompanied by a view of the side holders, with their cut is indicated by shading).

As shown in figa-5C and 6A-6C, the holders 11 on both ends are the same as the holders 11 described in connection with option 1 implementation. The cutout 25 on the side of the Board, formed on one end of each mounting plate 21 in the direction of its longer sides, similar to the neckline described in connection with option 1 implementation.

The cutout 25 on the side of the Board, formed on the other end of the circuit Board 21 in the direction of its longer sides, however, differs from the neckline described in connection with option 1 implementation. Specifically, the cutout 25 on the side of the Board has an L-shaped path.

In this cut-out 25 is the side of the Board let the length of the shorter side and longer side of the L-shaped circuit will be equal to Sb and Lb, respectively. Length Sb of the shorter sides is equal to the depth of Ab in Samoobrona circuit of the other of the recess 25 on the side of the Board. Thus, the length of the edge 21S shorter side, which performs contact with L-neck 25 on the side of the Board, slightly less than the width Wh of the notch 15 on the side of the holder. On the other hand, the length Lb of a longer side is larger than the width Wb Samoobrona circuit of the other of the recess 25 on the side of the Board, but shorter than the interval between the side walls SW4 and SW1 holder 11.

Due to the formation of the recess 25 on the side of the Board, having L-shaped contour, and the notch 15 on the side of the holder, the holder 11 and the mounting plate 21 are engaged with each other. Specifically, when the holder 11 is placed over the circuit Board 21, the lower part of the notch 15 on the side of the holder is aligned with the part mounting surface 21U, made smaller by the cut 25 on the side of the Board so that the contour of the notch 15 on the side of the holder is installed around and, thus, is engaged with the portion of the circuit Board 21 from the site of longest side L-shaped contour of the recess 25 on the side of the Board to the edge 21L longer side opposite from this section of the longer sides, the circuit Board 21. Thus, the holder 11 is fixed relative to the base 41 of the rear lights.

Thus, also with this cutout 25 on the side of p the ATA, having L-shaped contour, each holder 11 overlaps many circuit boards 21, with the possibility of connection on one end and, thus, engages with many circuit boards 21 to hold the circuit Board 21 is fixed relative to the base 41 of the rear lights.

Thus, option 2 implementation provides the same effect as option 1 implementation. I.e. block 49 backlight creates a back-lighting, which does not contain uneven quantity of light. In addition, in block 49 backlight led modules MJ can be attached to the base 41 of the rear illumination without the use of screws or the like for each circuit Board 21 and the heat that is present in the led modules MJ, you are a cheap way. In addition, since the holder 11 attaches together the many circuit boards 21 to the base 41 of the rear lights, it can be easy production unit 49 backlight.

When the mounting plate 21, which includes a cutout 25 on the side of the Board with L-shaped contour, is held stationary relative to the base 41 of the backlight by means of the holder 11, the movement of the circuit Board 21 in the X direction is limited by contact between the side wall SW4 (specifically, the outer side surface of the side wall SW4) and plot the shorter side who were in the path of the cutout 25 on the side of the Board. Moving the circuit Board 21 in the Y direction is limited by contact of the opposite edges in the contour of the notch 15 on the side of the holder with a plot of the longer sides in the circuit L-shaped notch 25 on the side of the Board and the edge 21L longer side opposite to the site of a longer side of the circuit Board 21.

That is, the outer side surface of the side wall SW4 and the opposite edge in the contour of the notch 15 on the side of the holder perform contact with the circuit Board 21, and thus, restrict the movement of the circuit Board 21 in the X and Y directions among the directions in the plane of the bottom surface 41C of the base 41 of the rear lights. Thus, as in the embodiment 1 of implementation, the side wall SW4, defining the edge of the hole HL, and the notch 15 on the side of the holder, formed in the side wall SW4, constitute the first section of the engagement.

In addition, as in the embodiment 1 of implementation, on the side SW4 includes a notch 15 on the side of the holder constituting the first section of the gearing, the lower part of the notch 15 on the side of the holder performs contact with the mounting surface 21U and, thus, restricts the movement of the circuit Board 21 in the direction Z. Thus, the mounting surface 21U, the edge of the circuit boards 21 and the notch 25 on the side of the Board, formed on the edge, do contact with the side wall is coy SW4, and thus, the mounting plate 21 is held stationary not only in directions in the plane of the bottom surface 41C of the base 41 of the rear lights, but also in directions crossing these directions in the plane (as in option 1 implementation, the mounting surface 21U, the edge of the circuit Board 21 and the notch 25 on the side of the Board formed in this edge, make up the second section of the mesh).

However, with a notch 25 on the side of the Board, having L-shaped contour, the sole holder 11, performing the engagement with the notch 25 on the side of the Board, may not completely prevent movement of the mounting plate 21 in one of two directions along the direction X. Therefore, in practice, as shown in figs, at one end of the circuit Board 21 in the direction of its longer side is a notch 25 on the side of the Board with Samoobrona circuit, and the holder 11 is engaged with the cutout 25 on the side of the Board; the other end of the circuit Board 21 in the direction of more the long side is cut 25 on the side of the Board with L-shaped contour, and the other holder 11 is engaged with the cutout 25 on the side of the Board.

Thus, the mounting plate 21 is installed between the two holders 11, and, thus, restricts its movement in two directions along the direction X. Thus, the circuit boards is 21 more stably held motionless.

As shown in figa, circuit boards 21, shown in figa-5C, one end of each circuit Board 21 is formed a cutout 25 on the side of the Board with Samoobrona loop on one edge 21L longer side; on the other end of the circuit Board 21 is formed a notch 21 on the side of the Board with L-shaped path on the other side 21L longer side.

It is, however, not meant as any limitation. It is also possible, as shown in figv, education on one end of each circuit Board 21 of the recess 25 on the side of the Board with Samoobrona loop on one edge 21L longer side, and on the other end of the circuit Board 21 is formed a cutout 25 on the side of the Board with L-shaped contour on the same edge 21L longer side.

[Option 3 implementation]

The following describes a third option implementation. Such elements, which have their functional counterparts in the embodiments 1 and 2 of implementation, are denoted by the same positions, and their description is not repeated.

Options 1 and 2 implementation of the cutout 25 on the side of the Board is formed on the edge 21L longer side of the circuit Board 21. It is, however, not meant as any limitation. For example, the cutout 25 on the side of the Board can be formed in the form of grooves, which are made on the edge 21S shorter side of the circuit Board 21.

Such a cutout 25 in a hundred who ohne Board is described below with reference to figa-8C and 9C-9C (block 49 backlight, shown on these drawings is considered as a third option implementation (EX 3)). Figa-8C are views similar to figa-2C, respectively.

Figa is a view in section along the line C1-C1' figa-8C, when viewed from the indicated arrow direction. FIGU is a view in section along the line C2-C2' figa-8C, when viewed from the indicated arrow direction. Figs is a view in section along the line C3-C3' figa-8C, when viewed from the indicated arrow direction (each drawing is accompanied by a view of the side holders, with their cut is indicated by shading).

As shown in figa-8C and 9A-9C, one cutout 25 on the side of the Board, formed in the circuit Board 21, for example, is shaped like a square bracket ("[") and formed in the form of a recess, which is made in one edge 21S shorter side of the circuit Board 21 to the other side of the 21S shorter side (width Wb of the cutout 25 on the side of the Board, of course, less than the length of the edge 21S shorter side of the mounting plate 21).

On the other hand, like the notch 15 on the side of the holder described in connection with options 1 and 2 implementation, the notch 15 on the side of the holder in this case, for example, has a shape that is similar to the bracket and formed in the side wall SW4, determines the part of the hole HL. As in options 1 and 2 implementation Chapter is Bina Ah excavation slightly greater than the thickness Tb of the circuit Board 21; unlike options 1 and 2 of implementation, however, the width Wh of the notch 15 on the side of the holder is slightly greater than the length of the edge 21S shorter side of the circuit Board 21.

The holder 11 includes, for example, as shown in figv, lug-BG, which is part of the inner side surface of the side wall SW1 facing the notch 15 on the side of the holder, to the notch 15 on the side of the holder. The tip of the protrusion BG has a width which is slightly less than the width of the recess 25 on the side of the Board, so the first is set to the last.

The holder 11 includes a notch 15 on the side of the holder, and the projection BG, described above, are in engagement with the mounting plate 21 (and, consequently, the led module MJ).

In particular, when the holder 11 is placed over the circuit Board 21 on the base 41 of the rear lights, the tip of the protrusion BG is aligned with the lower part of the recess 25 on the side of the Board so that the tip of the protrusion BG is installed in it and, thus, is in engagement with the contour of the recess 25 on the side of the Board and, in addition, the contour of the notch 15 on the side of the holder is installed around and, thus, is engaged with the mounting surface 21U and both edges 21L longer side. Thus, the holder 11 is fixed relative to the base 41 of the rear lights.

Thus, also with a notch 25 on St the side of the card, with the cutout 25 on the side of the Board, formed on the edge 21S shorter side, as described above, the holder 11 can together cover many of the circuit boards 21 at one end and, thus, to engage with multiple circuit boards 21 to hold the circuit Board 21 is fixed relative to the base 41 of the rear lights. Thus, option 3 implementation provides the same effect as options 1 and 2 implementation.

When the mounting plate 21, which includes a cutout 25 on the side of the Board, formed on the edge 21S shorter side, is held stationary relative to the base 41 of the backlight by means of the holder 11, the limited movement of the circuit Board 21 in the X direction by contact between the lip BG (in particular, the tip of the protrusion BG) and the lower part Samoobrona cutout 25 on the side of the Board. Moving the circuit Board 21 in the Y direction is limited by contact between the lip BG (in particular, the lateral area of the projection BG) and the opposite edges in the path Samoobrona cutout 25 on the side of the Board, and also the contact between the opposite edges in the contour of the notch 15 on the side of the holder and two edges 21L longer side of the circuit Board 21.

I.e. the ledge BG and the opposite edge in the contour of the notch 15 on the side from the rear side is I perform contact with the circuit Board 21 and thus, restrict the movement of the circuit Board 21 in the X and Y directions among the directions in the plane of the bottom surface 41C of the base 41 backlight (side wall SW4, which determines the shape of the hole HL, the notch 15 on the side of the holder, formed in the side wall SW4, and the ledge BG constitute the first section of the mesh).

In addition, as in embodiments 1 and 2 of implementation, the side wall SW4 includes a notch 15 on the side of the holder constituting the first section of the gearing, the lower part of the notch 15 on the side of the holder performs contact with the mounting surface 21U and, thus, restricts the movement of the circuit Board 21 in the direction Z. Thus, the contact mounting plate 21U and edge 21L longer side with a notch 15 on the side of the holder and the contact cutout 25 on the side of the Board, formed on the edge of the circuit Board 21, with the tab BG hold the mounting plate 21 fixed not only in directions in the plane of the bottom surface 41C of the base 41 of the rear lights, but also in directions crossing these directions in the plane (as in options 1 and 2 implementation, the mounting surface 21U, the edge of the circuit Board 21 and the notch 25 on the side of the Board, formed on the edge, make up the second section of the mesh).

With a notch 25 on the side of the Board, formed at the edges 21S shorter side, but who, as in option 2, the implementation, only the holder 11, which engages with a notch 25 on the side of the Board, may not completely prevent movement of the mounting plate 21 in one of two directions along the direction X. Therefore, in practice, as shown in figs, at one end of the circuit Board 21 in the direction of its longer side is a notch 25 on the side of the Board with Samoobrona circuit, and the holder 11 is engaged with the cutout 25 on the side of the Board; the other end of the circuit Board 21 in the direction of its longer side is a notch 25 on the side of the Board formed on the edge 21S shorter side, and the other holder 11 (in particular, the protrusion BG) is engaged with the cutout 25 on the side of the Board.

Thus, the mounting plate 21 is installed between the two holders 11, and, thus, restricts its movement in two directions along the direction X. Thus, the mounting plate 21 is held stationary in a more sustainable manner.

May be excluded ledge BG in the holder 11 and the notch 25 on the side of the Board on the edge 21S shorter side. The reason is that even without protrusion BG and cutout 25 on the side of the Board, as the holder 11 has a notch 15 on the side of the holder, the outline of the notch 15 on the side of the holder is engaged with the mounting surface 21U and the edge 21L longer is part of the circuit Board 21 (in this case, the notch 15 on the side of the holder is the first section of the gearing, and mounting surface 21U and the edge (edge 21S shorter side) of the circuit Board 21 constitute a second area of the mesh).

The contact between the inner side surface of the side wall SW1 in the holder 11 and the edge 21S shorter side of the circuit Board 21 without cutout 25 on the side of the Board can be used to restrict movement of the circuit Board 21 in the X direction (in this case, the notch 15 on the side of the holder and the side wall SW1 constitute the first section of the gearing, and the mounting surface 21U and the edge of the circuit Board 21 (edge 21S shorter side and edge 21L longer side) make up the second section of the engagement.

[Other embodiments of]

The present invention may be practiced otherwise than specifically described by means of embodiments above, and may have many changes and modifications without departure from the invention.

Although the above description describes various parts of the holder 11 and the circuit Board 21 as parts, where they are engaged with each other, this is not meant as any limitation. For example, at least the side wall SW, defining the edge of the hole HL, or notch 15 on the side of the holder, formed in the side wall SW, must engage with any part of the circuit Board 21; and oborot, for example, at least the mounting surface 21U of the mounting Board 21, the edge (21L, 21S) circuit Board 21 or the cutout 25 on the side of the Board, formed on the edge, should engage with any part of the holder 11.

In embodiments 1-3 implementation holder 11 T includes side walls SW1-SW4 and the upper portion of the UW and, therefore, has the form of a cap having a hollow space inside it. It is, however, not meant as any limitation. As shown in the partial top view (top view, showing the mounting plate 21 is held stationary) on figa and form in cross-section (view in section along the line D-D in figa, when viewed from the indicated arrow direction) on FIGU, the holder 11 may include a reinforcing member 17.

The reinforcing element 17 is a sheet-like element, which is located inside the hollow of the holder 11 to connect with the inner side surface of the side wall SW1 and the inner side surface of the side wall SW4 and also with the inner side surface of the upper section UW.

Providing a reinforcing element 17 increases rigidity of the holder 11. In particular, when the reinforcing element 17 is connected with the opposite inner side surfaces of the side walls SW1 and SW4 inside of the holder 11, he bears the load is and the side walls SW1 and SW4. Thus, the case when the two holder 11 is held between the mounting plate 21 with both ends in the direction of its longer sides and, in addition, the side wall SW4 is engaged, even when the side wall SW4 is under excessive load, the side wall SW4 is not destroyed.

In other words, when the reinforcing element 17 is connected with the inner side surface of the side wall SW4 and the inner side surface of the upper section UW inside of the holder 11, he carries the load on the side wall SW4 and the upper portion of the UW. Thus, when the two holder 11 is placed between a circuit Board 21 at both ends in the direction of their longer sides, and, in addition, the side wall SW4 is engaged, even when the side wall SW4 is under excessive load, the side wall SW4 is not destroyed.

Thus, since the reinforcing element 17 is connected with at least two inner side surfaces (at least two of the side walls SW1-SW4 and the upper plot UW) inside the holder 11, the reinforcing element also bears the load on the inner side surface. This makes it less likely that the destruction of the side walls, etc. related to the inner side of the front surfaces, and therefore, it increases the gesture is the spine of the holder 11.

As shown in figv, the reinforcing element 17 is connected with the inner side surface of the side wall SW1, the inner side surface of the side wall SW4 and the inner side surface of the upper section UW and, in addition, passes and reaches the edge of the side walls SW1 and SW4, where there is the upper portion of the UW. Thus, when the hole HL holder 11 is in contact with the mounting surface 21U of the mounting Board 21, the inner space of the holder 11 is divided reinforcing element 17 on the divided space, which are not communicated with each other and are completely separated from each other.

As shown in figs, however, the reinforcing element 17 does not necessarily have to pass to reach the edge of the side walls SW1 and SW4, where there is the upper portion of the UW. I.e. reinforcing element 17 can divide the space inside the holder 11 on the divided space, at the same time allowing these divided spaces to communicate with each other. With this design is less likely to stagnate the air inside of the holder 11. In addition, the formation of holes or the like connected to the external environment in any of the side walls SW1-SW4 and the upper section of UW, contributes to the fact that even less likely the stagnant air inside the holder 11.

The reinforcing element 17 may be of any shape. For example, the reinforcing element 17 which may take the form, shown in figa and 11B (figa is a view similar to figa, and FIGU is a view in section along the line E-E' figa, when viewed from the indicated arrow direction).

In particular, the reinforcing element 17 is connected with the inner side surface of the side wall SW1, the inner side surface SW4 and the inner side surface of the upper section UW and, optionally, closes the slot 15 on the side of the holder in the side wall SW4 position (specifically, a reinforcing member 17 closes the slot 15 on the side of the holder in the private direction XZ). In addition, to the lower part of the notch 15 on the side of the holder could perform contact with the mounting surface 21U of the mounting Board 21 when the holder 11 is placed over the circuit Board 21 on the base 41 of the rear lights, the reinforcing element 17 is performed so that it is not in contact with the mounting surface 21U, before you come in contact the lower part of the notch 15 on the side of the holder (a reinforcing member 17, however, can perform contact with the mounting surface 21U, however, when touching the lower part of the notch 15 on the side of the holder).

That is, as shown in figv, part of the reinforcing element 17 about the notch 15 on the side of the holder (near the side wall SW4) passes from the inner lateral surface of the upper plot is STCA UW etc., but not below the bottom of the notch 15 on the side of the holder.

On the other hand, as shown in figv, part of the reinforcing element 17 away from the notch 15 on the side of the holder (near the side wall SW1) can reach the edge of the side wall SW1, where there is located the upper portion of the UW. This part of the reinforcing element 17, however, is made so as not to come into contact with the part mounting surface 21U of the mounting Board 21, which is included in the holder 11. Otherwise, there is no contact between the contour of the notch 15 on the side of the holder and the mounting surface 21U of the mounting Board 21.

As shown in figa, part of the reinforcing element 17 about the side walls SW1 may perform contact with part of the edge 21S shorter side of the circuit Board 21, which is included in the holder 11. With this design is undoubtedly prevents movement of the circuit Board 21 in the direction X. the Portion of the reinforcing element 17 about the side wall SW4 may have a plot flush with the bottom of the notch 15 on the side of the holder. Plot flush then surely prevents movement of the circuit Board 21 in the z direction.

I.e. a reinforcing member 17 is engaged with the circuit Board 21 and, thus, holds the mounting plate 21 fixed (thus, the reinforcing element 17 is the first section of the mesh, which is included in sacale the s with the circuit Board 21 and thus, holds the mounting plate 21 is fixed).

As shown in figa and 12V, the reinforcing element 17 may include the installation part T, which is installed in the cutout 25 on the side of the Board. Specifically, as shown in figa, the part that is installed in the cutout 25 on the side of the Board, may be provided continuous with the reinforcing element 17 (figa is a view similar to figa, and FIGU is a view in section along the line F-F' Fig, when viewed from the indicated arrow direction).

This reinforcing element 17, when the holder 11 is placed over the circuit Board 21 on the base 41 of the rear lights, the installation part T is aligned with a notch 25 on the side of the Board, so the installation part T is installed in the cutout 25 on the side of the Board, and thus the contour of the notch 15 on the side of the holder is set and, thus, is engaged with the mounting surface 21U and both edges 21L longer side. Thus, the holder 11 is fixed relative to the base 41 of the rear lights.

I.e. also with the holder 11 which overlaps the many circuit boards 21 together at one end (for example, at one end of the circuit Board 21 in the direction of its longer sides) and, thus, engages with many circuit boards 21, so that by keeping the th circuit Board 21 is fixed relative to the base 41 of the rear lights. Thus, the holder 11 provides the same effect as options 1-3 implementation.

When the holder 11 holds the circuit Board 21 includes a notch 25 on the side of the Board, stationary relative to the base 41 of the rear lights, limited movement of the circuit Board 21 in the X direction by contact between the installation part T and the opposite edges in the contour of the cutout 25 on the side of the Board. Moving the circuit Board 21 in the Y direction is limited by contact between the installation part T and the lower part of the recess 25 on the side of the Board and also the contact between the opposite edges in the contour of the notch 15 on the side of the holder and two edges 21L longer side of the circuit Board 21.

I.e. installation part T and the opposite edge in the contour of the notch 15 on the side of the holder perform contact with the circuit Board 21 and, thus, restrict the movement of the circuit Board 21 in the X and Y directions among the directions in the plane of the bottom surface 41C of the base 41 backlight (side wall SW4, defining the edge of the hole HL, the notch 15 on the side of the holder formed on the side wall SW4, and the installation part T (and therefore reinforcing element 17) constitute the first section of the mesh).

In addition, as in embodiments 1-3 OS is enforced in the side wall SW4, includes the notch 15 on the side of the holder constituting the first section of the gearing, the lower part of the notch 15 on the side of the holder performs contact with the mounting surface 21U and, thus, restricts the movement of the circuit Board 21 in the direction Z. Thus, the contact between the mounting surface 21U and the notch 15 on the side of the holder and the contact between the cutout 25 on the side of the Board, formed on the edge of the circuit Board 21, and the installation part T hold the mounting plate 21 fixed not only in directions in the plane of the bottom surface 41C of the base 41 of the rear lights, but also in directions crossing these directions in the plane.

Although figa edge 21S shorter side of the circuit Board 21 is away from the inner side surface of the side wall SW1, they can contact with each other. With this design, since the mounting plate 21 has a tendency to move in the direction X, it is moving steadily prevented by the side walls SW1.

To reduce the cost of the reinforcing element 17 and prevent stagnation of air between the spaces inside of the holder 11, separated reinforcing element 17, as shown in figs, the reinforcing element 17 may be made so as to connect only with the inner side surface laterally the wall SW4 and the inner side surface of the upper section UW, and not with the inner side surface of the side wall SW1.

Although the above description discusses the cases when the connector 28 is mounted on the mounting surface 21U of the mounting Board 21, the connector 28 does not have to be installed on the mounting surface 21U. For example, as shown in Fig, the connector 28 may be mounted on the back surface 21B of the circuit Board 21 opposite the mounting surface 21U. In this case, as shown in Fig, the connector 28 is open to the external environment through the opening 41H connector formed in the bottom surface 41C of the base 41 of the rear lights.

With this design in the production process block 49 backlight circuit Board 21 no longer turn, and this contributes to the improvement of production efficiency (i.e. block 49 backlight then has a multilayer structure, facilitating easier Assembly and re-processing).

When the connector 28 is mounted on the back surface 21B of the circuit Board 21, as described above, the terminals (the site is irregular reflection), which are connected with the connector 28 can protrude from the mounting surface 21U. Such speakers terminals can cause irregular reflection or absorption of light, but masked by the holder 11. Thus, the block 49 backlight with sdet light, does not include the uneven amount of light.

The connector 28 need not necessarily be the type that is located on the mounting surface 21U of the mounting Board 21, but may be an edge connector of a type that is installed on the edge (e.g. edge 21S shorter side) of the circuit Board 21, as shown in Fig (position LN denotes the wiring laid on the mounting plate 21). With this design it is possible to reduce the number of components used in block 49 of the rear lights, and, thus, to achieve cost reduction. Although Fig connector 29 regional type installed on each circuit Board 21, it is not meant as any limitation; for example, three connector 28, which is integrated in one piece, can be installed on three of the circuit Board 21 at the same time.

The connecting section, which is used to allow the wiring circuit Board 21 to receive electrical current from an external power source is not limited to the connector 28. From the point of view of reducing the cost of the flexible printed circuit Board (FPC), instead, can be installed on the circuit Board 21 by means of compression.

The above description considers cases when the holder 11 has the same number of grooves 15 on the side of the holder formed therein, as to which icesto circuit boards 21. It is, however, not meant as any limitation; as shown in Fig, only the notch 15 on the side of the holder can cover many circuit boards 21 together at one end and, thus, to engage with multiple circuit boards 21 to hold the circuit Board 21 is fixed relative to the base 41 of the rear lights.

In this case, moving the circuit Board 21 in the Z-direction may be limited by contact between the lower portion of the path of the notch 15 on the side of the holder and the mounting surface 21U. However, moving the circuit Board 21 in the directions X, Y and similar areas cannot be limited by contact between the lower portion of the path of the notch 15 on the side of the holder and the mounting surface 21U. As a solution to this problem, as shown in Fig, formed a prominent part of T which projects from the bottom surface 41C of the base 41 of the rear lights, and engages with a notch 25 on the side of the Board.

There are no particular restrictions on the protruding part of T provided that it engages with the contour of the cutout 25 on the side of the Board. At each end of the opposite edge in the contour of the cutout 25 on the side of the Board perform contact with the protruding part T, which engages with them and, thus, limiting the em moving the circuit Board 21 in the direction X. In addition, one end of the lower part of the recess 25 on the side of the Board performs the contact protruding part T, which is engaged with it and, thus, restricts the movement of the circuit Board 21 in one of two directions along the Y-direction; at the other end of the lower part of the recess 25 on the side of the Board performs the contact protruding part T, which is engaged with it and, thus, restricts the movement of the circuit Board 21 in the other of the two directions along the direction Y.

I.e. the mounting plate 21 is engaged with the holder 11, and a projecting part C based on 41 backlight, and thus, restricts its movement in all directions, including directions X, Y and Z. when the mounting plate 21 is held stationary so that the holder 11 should have only one notch 15 on the side of the holder and, thus, has a simple form. This helps to reduce the cost of the holder 11 and contributes to the improvement of the production yield of the holder 11. The protruding portion T based on 41 backlight serves as an element for positioning the circuit Board 21 and, thus, enhances the efficiency of the production unit 49 backlight.

Provided that there is no probability of occurrence of the uneven amount of light in p is tsvetki, caused by any part (e.g., edge 21S shorter side) of the circuit Board 21 or any other element, such as a connector 28, then the holder 11 may be compact, so that it anchors the mounting plate 21 on the basis of 41 backlight without concealment region 21S shorter side of the circuit Board 21.

The list of items

11 - holder

SW1-SW4 - lateral wall

UW - top site

15 - neckline-side holder (first cut)

BG - ledge

17 is a reinforcing member (reinforcing phase)

T - installation part

MJ - led module

21 - mounting plate

21U - mounting surface

21B is a reverse surface opposite to the mounting surface

22 - led (light source, the light-emitting element)

25 is cut on the side of the Board (second cut)

28 - connector (section irregular reflection)

41 - based backlight

41C - the lower surface of the rear lights (installation surface)

PG - e node

42 - reflective sheet

43 - scattering plate

44 list with prisms

45 is a sheet of microlenses

49 - a backlight unit (lighting device)

59 liquid - crystal display panel (display panel)

69 - liquid crystal display device (display device)

p> 89 - LCD TV (television receiver)

1. The lighting device containing:
the light source;
the mounting plate, to which the light source; and
the basis on which it is installed mounting plate,
moreover, the lighting device additionally includes a holder that secures the mounting plate to the base, at the same time, covering at least the edge of the circuit Board on the base along the direction of the shorter side of the circuit Board.

2. The lighting device according to claim 1, in which the surface of the circuit Board, cover with holder, set the plot is uneven reflection.

3. The lighting device according to claim 2, in which the plot is uneven reflection is a connector or a terminal.

4. The lighting device according to any one of claims 1 to 3, wherein the mounting plate includes many circuit boards, and the holder covers many circuit boards together at its one end and, thus, engages with multiple circuit boards to hold the circuit boards are fixed relative to the base.

5. The lighting device according to any one of claims 1 to 3, in which, let the surface, onto which the circuit Board is called the installation surface, then the lighting device additionally includes is in itself the first section gear which performs contact with the circuit Board and, thus, restricts the movement of the circuit Board in at least one direction among the directions in the plane of the mounting surface.

6. The lighting device according to claim 5, in which the first section gear performs contact with the mounting surface of the circuit Board and, thus, restricts the movement of the circuit Board with the mounting surface.

7. The lighting device according to any one of claims 1 to 3, 6, in which the inside of the holder, which is hollow, is formed reinforcing portion which connects at least two inner side surfaces.

8. The lighting device according to claim 7, in which the amplifying section is a first section of the engagement.

9. The lighting device according to any one of p and 8, in which the holder is hollow and has a hole at the bottom, and the first section of the mesh represents at least one of the side walls constituting the edge of the hole, and a first cutout formed in the side wall.

10. The lighting device according to claim 9, in which, let part of the circuit Board that performs contact with the first sector gear, a second area of engagement, then the second segment is gearing represents at least one of the Monts is Noah the surface of the circuit Board, the edges of the mounting Board and the second cutout formed at the edge.

11. The lighting device of claim 10, in which the second notch includes a second notch formed respectively on one and on the other of the opposite ends of the circuit Board, and the first cut on one end and the first cut on the other end have an identical form.

12. The lighting device according to claim 11, in which
the second cut on one end is formed on one of the two longer sides of the circuit Board along the direction of its longer sides, and
the second cut on the other end formed on the other of the two longer sides of the circuit Board along the direction of its longer sides.

13. The lighting device according to any one of claims 1 to-3, 6, 8, 10, 11 and 12, in which
the holder contains holders provided respectively on one and on the other of the opposite ends of the circuit Board along the direction of its longer sides, and
the mounting plate is located between the holders and, thus, is kept fixed.

14. The lighting device according to any one of claims 1 to-3, 6, 8, 10, 11 and 12, in which
inside the handle, which is hollow, is formed reinforcing portion which connects at least two inner side surfaces, and
the amplifying section divides the inner space of the holder section is military space at the same time allowing the separated spaces to communicate with each other.

15. The lighting device according to any one of claims 1 to-3, 6, 8, 10, 11 and 12, in which the mounting surface of the circuit Board is formed of a reflective film.

16. The lighting device according to any one of claims 1 to-3, 6, 8, 10, 11 and 12, in which the mounting surface of the circuit Board is first reflective sheet.

17. The lighting device according to any one of claims 1 to-3, 6, 8, 10, 11 and 12, in which between the mounting plate and the base of the inserted second reflective sheet.

18. The lighting device according to any one of claims 1 to-3, 6, 8, 10, 11 and 12, in which the base is made of reflective material.

19. The display device containing a display panel receiving the light from the lighting device according to any one of claims 1 to 18.

20. The display device according to claim 19, in which the display panel is a liquid crystal display panel.

21. Television receiver containing the display device according to claim 20.



 

Same patents:

FIELD: electricity.

SUBSTANCE: back light unit (49) for display device (69) equipped with LCD panel (59) contains a frame (41), dissipating plate (43) supported by the frame and point light sources supported by mounting substrates (21) provided at the frame. Point light sources contain LEDs (22) installed at mounting substrates. Mounting substrates (21) are interconnected by connectors (25) thus forming rows (26) of mounting substrates (21). Varieties of rows (26) of mounting substrates (21) are located in parallel; a row (26) of mounting substrates (21) is formed by long and short mounting substrates (21) and location of such long and short mounting substrates (21) is changed to the opposite row-by-row. Positions of connectors (25) are not levelled in a straight line in direction of rows (26) of mounting substrates (21).

EFFECT: providing uniform brightness of the dissipating plate.

23 cl, 10 dwg

FIELD: electricity.

SUBSTANCE: backlighting unit (49) for a display device (69) equipped with a liquid crystal display panel (59) comprises a base (41), a diffusing plate (43), supported by means of the base, and point sources of light, supported by means of mounting substrates (21), provided on the base. Point sources of light contain modules of light emission (MJ). Mounting substrates are arranged in the rectangular area (41a) suitable for location of mounting substrates in it and arranged on the base. Gaps at the borders between mounting substrates do not stretch in any direction along long sides and/or in direction along short sides of the rectangular area, in order to provide for the possibility to see the rectangular area from the edge to the edge.

EFFECT: achievement of homogeneity of reflection ratio.

16 cl

FIELD: physics.

SUBSTANCE: liquid crystal display device includes a first polariser, a second polariser facing the first polariser, a liquid crystal display panel provided between the first polariser and the second polariser, and a first phase plate and a second phase plate provided between the first or second polariser and the liquid crystal display panel. The display panel has a pair of substrates and a liquid crystal layer placed between the pair of substrates, which includes homogeneously aligned liquid crystal molecules. The phase plate includes a liquid crystal film placed in a position where the nematic liquid crystal is hybrid-aligned. Phase difference in the perpendicular direction of the element situated between the first and second polarisers, excluding the liquid crystal layer and the first phase plate, is 120 nm or greater.

EFFECT: reduced inversion of the gray gradation scale in a position where a colour close to black is displayed.

19 cl, 116 dwg

FIELD: physics.

SUBSTANCE: method of modulating optical radiation involves transmitting natural visible light in the wavelength range 350-850 nm at an angle of 5-75°, between the direction of the light and the perpendicular to the surface of the working optical element made from n layers of manganite A1-xBxMnO3 (where n≥1), wherein the trivalent rare-earth metal A is partially substituted with a univalent or divalent metal B with degree of substitution x. Visible light transmitted through and reflected from the working element is modulated under the effect of a control external magnetic field in which is located the working optical element, having giant visible light magnetotransmission and magnetoreflection effect.

EFFECT: wider range of methods of modulating optical radiation, simple design.

2 cl, 3 dwg

FIELD: electricity.

SUBSTANCE: lighting device 12 includes light source 17, housing 14 containing light source 17 and hole 14b for passing of light emitted by light source 17 and optical element 15a provided so that to be directed to light source 17 and close hole 14b. Optical element 15a has various coefficient of reflection lengthwise to light source 17.

EFFECT: achievement of nearly even distribution of lighting brightness without partially formed dark parts.

12 cl, 27 dwg

FIELD: electricity.

SUBSTANCE: rear light unit (49) of display device (69) with liquid-crystal display panel (59) is provided with housing (41), diffusing plate (43) supported by housing, and light source located on housing (41) and emitting light on diffusing plate, and reflective sheet (42) for light reflection in diffusing plate direction. In peripheral part of reflective sheet (42) there formed is sloping surface (42a) reflecting light emitted sideward from the light source in direction of diffusing plate (43). This sloping surface (42a) of reflective sheet (42) is subject to treatment reducing reflection, which is achieved applying to sloping surface (42a) print with higher optical absorption constant, than it is of sloping surface (42a).

EFFECT: providing uniform brightness.

9 cl, 15 dwg

FIELD: electricity.

SUBSTANCE: light-source unit includes a light-emitting diode 17 serving as a light source, diffuser lens 19, reflective sheet 23 of the board and a limiter 27. The diffuser lens 19 is faced towards emitting surface 17a of light emitted by the light-emitting diode 17. The reflective sheet 23 of the board is placed so that it is faced towards surface of the diffuser lens 19 which is located closer to the light-emitting diode 17 and configured for the purpose of light reflection. The limiter 27 protrudes from the diffuser lens 19 in direction of reflective sheet 23 of the board and it limits mutual alignment between the diffuser lens 19 and reflective sheet 23 of the board.

EFFECT: removing irregularity of the light emitted from the diffuser lens.

32 cl, 29 dwg

FIELD: electricity.

SUBSTANCE: illumination device 12 contains a great number of point sources 80 of light, base 14 comprising point sources 80 of light and window 14b through which light passes from point sources 80, optical element 15 (15a) faced towards point sources 80 of light and capable to cover the window 14b. Point sources 80 of light are located so that they ensure LH zone with high density of light sources in which the interval of the above sources is relatively small and LL zone with low density of light sources in which the interval of the above sources is relatively big. Reflective sections 50 which reflect light emitted by point sources 80 are formed at least in the area brought in coincidence with LL zone with low density of light sources in the optical element 15 (15a).

EFFECT: reducing costs and energy consumption and increasing brightness of illuminated surface.

19 cl, 12 dwg

FIELD: electricity.

SUBSTANCE: highlighting device 12 consists of a board 18 with installed light-emitting diodes 17 serving as a light source, chassis 14 with the installed board 18 with light-emitting diodes 17 and an opening 4b for passage of light emitted by the light-emitting diodes 17 and holder 20 that passes in at least one direction along surface of the board plate 18 and fixed to chassis 14 in order to hold the board 18 together with chassis between the holder 20 and chassis 14.

EFFECT: ensuring stable fixture for light sources without use of screws.

36 cl, 29 dwg

FIELD: physics.

SUBSTANCE: in the method of assembling microelectronic components, once a position fixing polymer (4), in order to maintain alignment of microelectronic components (2) that are assembled on a substrate (1) using an anisotropic electroconductive film (7), is applied onto the substrate and hardened, the microelectronic components (2) are heated to a predetermined temperature and compressed at a predetermined pressure using a flexible sheet (5) provided on the microelectronic components and then subjected to single-step compressive fixation on the substrate (1).

EFFECT: providing a method of assembling microelectronic components which, when using an anisotropic electroconductive film to assemble a plurality of microelectronic components of different height on a base plate, allows assembling at precise positions on the base plate, thereby preventing position shift which results from compressive fixation.

5 cl, 16 dwg

FIELD: mechanical engineering.

SUBSTANCE: device has signal form generator, power amplifier and electromechanical block, including first fixed magnetic system and first coil of current-conductive wire, additionally included are integrator and corrector of amplitude-frequency characteristic of electromechanical block, and block also has second fixed magnetic system and second coil of current-conducting wire, rigidly and coaxially connected to first coil. Connection of first and second coils with fixed base is made in form of soft suspension with possible movement of first and second coils, forming a moving part of modulator, relatively to fixed magnetic systems, while output of said signal shape generator is connected to direct input of integrator, inverse input of which is connected to speed sensor of moving portion of modulator, output of integrator is connected to input of corrector, to output of which input of said power amplifier is connected.

EFFECT: higher precision.

3 cl, 8 dwg

FIELD: conversion of optical radiation by using nanotechnology.

SUBSTANCE: transparent nano-particles having volume of 10-15 cm3 are illuminated by white light. Nano-particles are activated by impurity atom with concentration of 1020-1021cm-3 and are strengthened in form of monolayer onto transparent substrate. Nano-particles are made of glass and are glued to substrate by means of optically transparent glue. Substrate can be made flexible.

EFFECT: high brightness of image.

4 cl, 1 dwg

FIELD: optical instrument engineering.

SUBSTANCE: modulator has non-monochromatic radiation source, polarizer, first crystal, first analyzer, and second crystal, second analyzer which units are connected together in series by optical coupling. Modulator also has control electric field generator connected with second crystal. Optical axes of first and second crystals are perpendicular to direction of radiation and are parallel to each other. Axes of transmission of polarizer and analyzers are parallel to each other and are disposed at angle of 45o to optical axes of crystals.

EFFECT: widened spectral range.

3 dwg

FIELD: engineering of displays.

SUBSTANCE: to decrease number of external outputs of screen in liquid-crystalline display, containing two dielectric plates with transparent current-guiding electrodes applied on them, each electrode of one plate is connected to selected electrode of another plate by electric-conductive contact, while each pair of electrodes is let out onto controlling contact zone, and electrodes, forming image elements of information field of screen, on each plate are positioned at angle φ similar relatively to external sides of plates, while angle φ satisfies following condition: 10°≤φ≤85°.

EFFECT: decreased constructive requirements for display.

4 cl, 4 dwg, 1 tbl

FIELD: optical engineering.

SUBSTANCE: device has optically connected single-frequency continuous effect laser, photometric wedge, electro-optical polarization light modulator, first inclined semi-transparent reflector, second inclined semi-transparent reflector and heterodyne photo-receiving device, and also second inclined reflector in optical branch of heterodyne channel, high-frequency generator, connected electrically to electro-optical polarization modulator, direct current source, connected to electrodes of two-electrode vessel with anisotropic substance, and spectrum analyzer, connected to output of heterodyne photo-receiving device.

EFFECT: possible detection of "red shift" resonance effect of electromagnetic waves in anisotropic environments.

1 dwg

FIELD: electro-optical engineering.

SUBSTANCE: fiber-optic sensor system can be used in physical value fiber-optic converters providing interference reading out of measured signal. Fiber-optic sensor system has optical radiation laser detector, interferometer sensor, fiber-optic splitter, photodetector and electric signal amplifier. Interferometer sensor is equipped with sensitive membrane. Fiber-optic splitter is made of single-mode optical fibers. Connection between fiber-optic splitter and interferometer sensor is based upon the following calculation: l=0,125λn±0,075λ, where l is distance from edge of optical fiber of second input of fiber-optic splitter to light-reflecting surface of sensor's membrane (mcm); λ is optical radiation wavelength, mcm; n is odd number within [1001-3001] interval.

EFFECT: simplified design; compactness; widened sensitivity frequency range.

4 cl, 1 tbl, 3 dwg

FIELD: electro-optics.

SUBSTANCE: method can be used in optical filter constructions intended for processing of optical radiation under conditions of slow or single-time changes in processed signal, which changes are caused by non-controlled influence of environment. Optical signal is applied to entrance face of photo-refractive crystal where phase diffraction grating is formed by means of use of photo-refractive effect. Reflecting-type phase diffraction grating is formed. For the purpose the optical signal with duration to exceed characteristic time of phase diffraction grating formation, is applied close to normal line through entrance face of photo-refractive crystal of (100) or (111) cut onto its output face which is formed at angle of 10°to entrance face. Part of entrance signal, reflected by phase diffraction grating, is used as output signal. To apply optical signal to entrance face of photo-refractive crystal, it has to be transformed into quazi-flat wave which wave is later linearly polarized.

EFFECT: power independence of processing of optical signal.

2 cl, 2 dwg

FIELD: measuring equipment.

SUBSTANCE: optical heat transformer includes base of body with optical unit positioned therein, transformer of heat flow and consumer of heat flow in form of thermal carrier. Optical unit consists of optical heat source and reflectors of coherent heat flows and concentrator - generator of coherent heat flow in form of two collecting mirrors and a lens, positioned on different sides of source, with possible redirection of coherent heat flow for interaction with transformer of heat flow with following transfer of heat flow.

EFFECT: decreased energy costs.

1 dwg

FIELD: measuring technique.

SUBSTANCE: electro chromic device has first substrate, which has at least one polymer surface, ground primer coat onto polymer surface, first electro-conducting transparent coating onto ground primer coat. Ground primer coat engages first electro-conducting coating with polymer surface of first substrate. Device also has second substrate disposed at some distance from first substrate to form chamber between them. It has as well the second electro-conducting transparent coating onto surface of second substrate applied in such a way that first coating is disposed in opposition to second one. At least one of two substrates has to be transparent. Device also has electrochromic medium disposed in chamber, being capable of having reduced coefficient of light transmission after electric energy is applied to conducting coatings. Electrochromic medium and ground primer coat are compatible.

EFFECT: simplified process of manufacture; cracking resistance.

44 cl, 1 dwg

FIELD: laser and fiber optics.

SUBSTANCE: in accordance to invention, optical wave guide is heated up during recording of Bragg grating up to temperature, which depends on material of optical wave guide, and which is selected to be at least 100°C, but not more than temperature of softening of optical wave guide material, and selected temperature is maintained during time required for recording the Bragg grating.

EFFECT: increased thermal stability of recorded Bragg gratings.

2 cl, 3 dwg

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