Lighting device, display device and television receiver

FIELD: electricity.

SUBSTANCE: group of inventions relates to lighting engineering. Backlight lighting device (24) is equipped with backlight base (22) with mounted LED unit (32) and a light-conducting plate (20), which lateral surfaces are light-receiving surfaces (20a). The LED unit (32) is faced to light-receiving surfaces (20a) of the light-conducting plate (20). The backlight base (22) has guide pins (40) protruding from the base plate surface (22a), at that the light-conducting plate (20) has concave connecting sections (38) at positions faced to the guide pins (40), while the guide pins (40) are coupled to the connecting sections (38). Lateral surface of each guide pin (40) is equipped with a through hole (40a), which passes through the above lateral surface.

EFFECT: prevention or exclusion of uneven brightness of the light emitted through the light-conducting plate.

9 cl, 12 dwg

 

The technical field to which the invention relates.

[0001] the Present invention relates to a lighting device, display device and television receiver.

Prior art

[0002] In recent years, display elements of the display device of the image, such as a television receiver, are at the stage of transition from conventional cathode-ray tube on a flat panel display such as a liquid crystal panel or a plasma display panel that offers the ability to provide a flat display device of the image. Such a liquid crystal panel used to provide the liquid crystal display device such as LCD TV, does not emit light, and therefore requires a backlight unit as a separate lighting device.

[0003] Patent document 1 discloses a backlight unit that includes protrusions that define the position of the light guide plate, which conducts light from the light sources. Such a backlight unit includes a light source, light guide plate, which has a side surface as the light-receiving surfaces, and the base of the rear lights, which puts on himself the light sources and the light is a conductive plate. Ledges, some of which is rounded, is provided on a part of side surfaces of the light guide plate, and recesses are provided on parts of the side plates of the base of the backlight in accordance with the tabs. The light sources are arranged in such a way as to be adjacent to the light-receiving surface, which is not provided any projections. In the backlight unit corresponding to the protrusions and recesses are connected to each other, due to what is determined by the position of the light guide plate relative to the base of the rear lights. Each of the rounded protrusions. Based on the foregoing, the light that is emitted from the light sources is reflected several times from the side surfaces of the protrusion, when the rays of light falling on the light guide plate is reduced, allowing the occurrence of uneven brightness is less likely.

[0004] Patent document 1: Publication of unexamined patent application of Japan No. 2005-302485.

The problem which must be solved by the inventions

[0005] However, in the backlight device, which is disclosed in patent document 1, the light sources may not be placed in such a way as to be adjacent to the light-receiving surface of the light guide plate, on which the protrusions are provided.

Disclosure n the standing inventions

[0006] This method has been improved taking into consideration the above details. The purpose of this method is providing a backlight unit, which includes a configuration to determine the position of the light guide plate, wherein the light source is converted to the desired light-receiving surface of the light guide element, allowing the occurrence of uneven brightness is less likely.

A means for solving problems

[0007] In accordance with the present technology, the lighting device includes a light source, light guide plate, the enclosing element and the connecting section. Light guide plate has a light-receiving surface on its lateral surface, which face the light source and configured to conduct light, which is emitted from the light source and enters the light-receiving surface. The enclosing element includes a bottom plate having an outer edge and a major surface, a side plate rising from the outer edge on the side of the main surface, and a protrusion that protrudes from the main surface of the lower plate and has a through hole in its side surface, which is formed through it. The enclosing element comprises a light source and siteprovides the th plate on the side of the main surface of the lower plate. The connecting section is provided on the light guide plate so as to be advanced or educated through the light guide plate in accordance with the protrusion, while the connecting section configured to connect with the tab.

[0008] In accordance with the above lighting device, the protrusion, which is provided on the bottom plate enclosing element is connected with a connecting section provided on the light guide plate, due to what is determined by the position of the light guide plate relative to the bottom plate enclosing element. Accordingly, the light source may be disposed so as to be converted to the desired light-receiving surface which is provided on the side surface of the light guide plate. In addition, the light that passes through the light guide plate and reaches the vicinity of the protrusion passes through the through hole, which is formed in the ledge. Based on the foregoing, the light is less likely to be blocked by the protrusion. Even while providing a mechanism to determine the position of the light guide plate, the light source may be located so as to be converted to the desired light-receiving surface of the light guide plate through than the occurrence of uneven brightness of the light, which emerges from the light guide plate becomes less likely.

[0009] the Through hole may have an open part, and can also be formed in the protrusion so that its open portion facing to the light source, which is the closest to the through hole. In this configuration, the light that passes through the light guide plate and reaches the vicinity of the protrusion passes through the through hole, which is formed in the ledge. Accordingly, the occurrence of uneven brightness of the light that exits the light guide plate becomes less likely.

[0010] the Lighting device may further include a reflective sheet provided between the light guide plate and the main surface of the containing element and arranged to reflect light. The reflecting sheet may be provided with a hole of the reflecting sheet, which is formed through the reflective sheet and corresponds to the ledge. The protrusion can be inserted into the hole of the reflecting sheet and connected with the connecting section. In this configuration, the protrusion is connected with the hole of the reflecting sheet, thanks to the determined position of the reflecting sheet relative to the containing element.

[0011] the Light guide plate can have multiple b is the same surface as the set of light-receiving surfaces. The light source may include multiple light sources, the light sources may be arranged so as to be adjacent to each of the light-receiving surfaces of the side surfaces of the light guide plate. In this configuration, the light source may be positioned to be adjacent to all side surfaces of the light guide plate.

[0012] the Through hole may include multiple through holes. In this configuration, the through holes are formed in the ledge, allowing the light passes through the through-hole which is formed in the ledge. The light is less likely to be blocked by a ledge.

[0013] the bottom plate enclosing element and the protrusion can be formed as a single unit. In this configuration, the protrusion may be formed in the manufacturing process of the containing element, which ensures ease of manufacture of the ledge.

[0014] the Lighting device may further include a reflective element, which is provided between the light source and the light guide plate. The light-receiving surface may be formed into an elongated shape, and the reflective element may be provided along the elongated light-receiving surface. In this configuration, tragoudi element directs part of the light rays from the light source, which are dispersed outside of the light guide plate, light guide plate. This increases the efficiency of reception of light, which is emitted from the light source and enters the light guide plate.

[0015] This method can be used in a display device comprising the above-mentioned lighting device and a display panel, configured to provide display using light from the lighting device. As the display panel, the display device may include a liquid crystal panel. The television receiver may include the above-mentioned display device. By this is achieved extended area display image.

The advantage of the invention

[0016] the Present invention provides a lighting device that includes a configuration to determine the position of the light guide plate in which the light source is converted to the desired light-receiving surface of the light guide plate, allowing the occurrence of uneven brightness is less likely.

Brief description of drawings

[0017] Figure 1 depicts a perspective view with a spatial separation of the parts, illustrating a television receiver TV according to the first variant is carried out;

Figure 2 depicts a perspective view with a spatial separation of the parts, illustrating the liquid crystal device 10 display;

Figure 3 depicts a view in section of the liquid crystal device 10 display;

Figure 4 depicts a view in plan of the light guide plate 20 and the blocks 32 LED, which is visible from the front side;

Figure 5 depicts an enlarged perspective view of the guide pin 40;

6 depicts a perspective view with a spatial separation of the parts, illustrating the LCD device 110 display of the second variant of implementation;

7 depicts a view in section of a liquid-crystal device 110 display;

Fig depicts a view in plan, illustrating the light guide plate 120 and blocks 132 LED visible from the front side;

Fig.9 depicts an enlarged perspective view of the guide pin 240 provided in the backlight unit, in accordance with the third embodiment;

Figure 10 depicts an enlarged view in perspective of the guide pin 340 provided in the backlight unit, in accordance with the fourth embodiment;

11 depicts an enlarged view in perspective of the guide pin 440 provided in the backlight unit, in accordance with the fifth embodiment; and

Fig sabrejet enlarged perspective view of the guide pin 540, provided in the backlight unit, in accordance with the sixth embodiment.

Embodiments of the inventions

The first option exercise

[0018] the First variant of implementation of the present invention will be described with reference to the accompanying drawings. On some drawings the X-axis, Y-axis and Z-axis, and the direction of each axis corresponds to the direction indicated on each drawing. The Y axis direction corresponds to a vertical direction, and the direction of the axis X corresponds to the horizontal direction. The terms "above" or "below" are used with reference to the vertical direction.

[0019] Figure 1 depicts a perspective view with a spatial separation of the parts, illustrating a television receiver TV according to the first embodiment. As illustrated in figure 1, the television receiver TV includes the liquid crystal device 10 display, front and rear casing parts Ca and Cb, between which is placed the liquid crystal device 10 of the display, the source of P supply, a tuner T and a stand S.

[0020] Figure 2 depicts a perspective view with a spatial separation of the parts, illustrating the liquid crystal device 10 of the display. Figure 3 depicts a view in section of the liquid crystal device 10 of the display. On IG and 3, the upper side corresponds to the side of the front surface, and the lower side corresponds to the side of the rear surface. As illustrated in figure 2, the General form of liquid crystal display devices 10 is a horizontally oriented rectangle, and the liquid crystal device 10 display includes a liquid crystal panel 16 as the display panel and the device 24 backlight as a light source. The liquid crystal panel 16 and the device 24 backlight held together by a frame 12 having a frame shape, etc.

[0021] Next will be described a liquid-crystal panel 16. The liquid crystal panel 16 is configured so that a pair of transparent (capable of high light transmission) glass substrates were connected to each other with regard to a predetermined interval between them, and between the glass substrates hermetically was a layer of liquid crystals (not illustrated). On one of the glass substrates are provided with switching components (for example, thin film transistors (TFT)connected with stokovye tires and bolt carrier tyres, which are perpendicular to each other, pixel electrodes connected with the switching components of the orienting film, etc. On the other substrate on specialty color filters, having color sections such as sections of R (red), G (green), B (blue), etc. colors that are arranged in a predefined pattern, protivoelektrodom and orienting the film. The image data and various control signals that are necessary to display images, served with the management Board on ishikawae bus, bolt bus and protivoelektrodom. Polarizing plates (not illustrated) are attached to outer surfaces of the glass substrates.

[0022] Hereinafter will be further clarified device 24 backlight. As illustrated in figure 2, the device 24 backlight includes a base 22 backlight, optical element 18 and the frame 14. The base of the back 22 of the backlight essentially has a volume box shape and has an open portion on the side of the front surface (the side of the output light side of the liquid crystal panel 16). Optical element 18 is provided on the front surface side of the light guiding surface 20b) of the light guide plate. Frame 14 is made in the form of a rectangular frame and holds the liquid crystal panel 16 at its inner edge.

[0023] the Blocks 32 LED (power light-emitting diodes)of the reflecting sheet 26 and the light guide plate 20 placed on the base 22 of the rear podshock is. Block 32 LED is provided on each outer surface 22b and 22c (side plate) of the long side of the base 22 of the backlight and emits the light. The surface 20a (light-receiving surface) of the long side of the light guide plate 20 facing the block 32 LED, this light guide plate 20 directs light that is emitted from the block 32 LED, on the liquid crystal panel 16. Optical element 18 is located on the side of the front surface of the light guide plate 20. The device 24 backlight of this variant implementation of the light guide plate 20 and the optical element 18 are located just below the liquid crystal panel 16 and 32 LED, that is, the light source is located on the side of the terminal part of the light guide plate 20. Based on the foregoing, the device 24 backlight this option is backlit mechanical type (backlight side).

[0024] the Base 22 of the backlight is made of metal, such as material type aluminum, and includes a bottom plate 22a having the form of a horizontally oriented rectangle, and side plates 22b and 22c, each of which rises from the outer edge of the corresponding long or short side of the bottom plate 22a. The area of the base 22 of the backlight, which is turned into the block 2 LED, is the area that hosts transmitting plate 20.

[0025] the Reflecting sheet 26 is provided on the front surface of the bottom plate 22a of the base 22 of the rear lights. The reflecting sheet 26 has a reflective surface on its side of the front surface, and a reflecting surface facing the rear surface 20c light guide plate 20. The light which is diffused from the unit 32 LED, is reflected from the reflecting surface of the reflecting plate 26, so that it falls on the rear surface 20c light guide plate 20. Board power source (not illustrated)that supplies power to the unit 32 LED, is provided on the back surface of the bottom plate 22a.

[0026] the Light guide plate 20 has the shape of a rectangular plate and is made of resin with high transmittance (high coefficient of transparency, such as acrylic resin, and it is held by a base 22 of the rear lights. As illustrated in figure 2, light guide plate 20 is located at the base of the back illumination in the area between the blocks 26 LED so that the light guiding surface 20b, that is, the main surface of the plate facing the diffusing sheet 18a. While placing light guide plate 20, the light that is emitted is carried out of the blocks 26 LED, falls on the light-receiving surface 20a light guide plate 20, and then out of the light guiding surface 20b, which is addressed to the scattering sheet 18a. Thus, the back surface of the liquid crystal panel 16 is exposed to light.

[0027] the guide pins 40 are provided on the front surface of the bottom plate 22a of the base 22 of the rear lights so that they spoke of him to the rear surface 20c light guide plate 20. The reflecting sheet 26 has openings 39 reflecting sheet (see figure 3), which are formed in positions corresponding to the guide pins 40. Each of the holes 39 of the reflecting sheet has a size that can pass the guide pin 40. In-depth connecting sections 38 are provided on the rear surface 20c light guide plate 20 at positions that correspond to the guide pins 40. Each of the guide pins 40 passes through the corresponding hole 39 of the reflecting sheet, thanks to the determined position of the reflecting plate 26 relative to the base 22 of the rear lights. In addition, the guide pin 40 passes through hole 39A of the reflecting sheet and connected with the corresponding connecting section 38, through which is determined by the position of the light guide plate 20 relative to the base 22 in the rear is tsvetki.

[0028] the Optical element 18 includes a diffusing sheet 18a, the lens sheet 18b and a polarizing sheet 18C reflective type, which layers are superimposed on each other from the side of the light guide plate 20 in this order. Scattering sheet 18a, the lens sheet 18b and a polarizing sheet 18c reflecting type transform the light that is emitted from the block 32 LED and passes through the light guide plate 20, in the planar light. The liquid crystal panel 16 is provided on the side of the upper surface of the polarizing sheet 18C reflective type, and the optical element 18 is provided between the light guide plate 20 and the liquid crystal panel 16.

[0029] the Block 32 LED includes cost 30 light-emitting diodes (LED) and led light sources 28 of light that emit white light. Fee 30 LED has a rectangular shape and made of resin. LED light sources 28 of the light linearly arranged on the circuit Board 30 LED. Fee 30 LED is attached to the side plate 22b and 22c of the base 22 of the backlight by means of screws. Each LED light source 28 may include an element emitting blue light, which is covered with a phosphor having a peak intensity of light emission in the yellow range, and emit white light. Each LED light source 28 may include an element emitting blue light, which is covered with Lumi is a three, having a peak intensity of light emission in the green range, and luminescense substance having a peak intensity of light emission in the red range, and emit white light. Each LED light source 28 may include an element emitting red light and the element emitting blue light, which is covered with a phosphor having a peak intensity of light emission in the green range, and emit white light. Each LED light source 28 may include an element emitting blue light, an element emitting green light and emit red light and emit white light. Each LED light source 28 may include an element emitting ultraviolet light and a phosphor. In particular, each LED light source 28 may include an element emitting ultraviolet light, covered with phosphors, each of which has a peak intensity of light emission in each of blue, green and red ranges, and emit white light.

[0030] Next will be explained the location and configuration guide pin 40. Figure 4 depicts a view in plan of the light guide plate 20 and the blocks 32 LED, which is visible from the front surface. 6 depicts an enlarged perspective view of the guide pin 40.

[0031] As illustrated in figure 4, the bottom plate 22 of the base 22 of the backlight provided with eight guide pins 40. Three guide pins 40 are provided along each long side of the bottom plate 22a of the base 22 of the rear lights, and on each short side of the bottom plate 22a of the base 22 of the rear illumination is provided by one guiding pin 40. Light guide plate 20 has eight connecting parts 38, which are provided in accordance with the positions of the guide pins 40.

[0032] As illustrated in Figure 5, the guide pin 40 is made in the form of a cylindrical column. A through hole 42 is formed in the peripheral surface 40a of the guide pin 40 so that it passed through the cylindrical column of the guide pin 40. A through hole 42 is parallel to the surface of the bottom plate 22a of the base 22 of the rear lights. A through hole 42 is provided so that its open part 42a located facing the LED light source 28, which is closest to the through hole 42. Preferably, the through hole 42 is formed so that the open part 42a had a diameter W2 which is greater than the radius W1 of the upper surface of the guide pin 40. In this configuration, the light passes through the through hole 42. The lower surface of the guide pin 40 is glued or pipiwai the Xia to the bottom plate 22a of the base 22 of the backlight and is fixed on it.

[0033] If the LED light sources 28 of the light device 24 backlight is on, then the light from them falls on the light guide plate 20 through the light-receiving surface 20a. When the light that falls on the light guide plate 20 reaches the surroundings of the guide pin 40, it passes through the through hole 42, which is formed in the guide pin 40. Based on the foregoing, the occurrence of shadows in the area, located near the guide pin 40, which blocks light, it becomes less likely.

[0034] In the device 24 backlight, in accordance with the present embodiment, each of the guide pins 40, which are provided on the bottom plate 22a of the base 22 of the rear lights, connected with each of the connecting parts 38 provided on the light guide plate 20, through which is determined by the position of the light guide plate 20 relative to the bottom plate 22a of the base 22 of the rear lights. Accordingly, the block 32 LED may be located so as to be converted to the desired light-receiving surface 20a, which is provided on the side surface of the light guide plate 20. In addition, the light that passes through the light guide plate 20 and reaches the surroundings of the guide pin 40 passes through the through hole 42 of the sending stiff. Based on the foregoing, the light is less likely to be blocked by the guide pin 40. Even while providing a mechanism to determine the position of the light guide plate 20, light source 32 of the light can be positioned in such a way as to be converted to the desired light-receiving surface 20a light guide plate 20, allowing the occurrence of uneven brightness of the light that exits the light guide plate 20 becomes less likely.

[0035] In the device 24 backlight, in accordance with the present embodiment, the through hole 42 is formed so that the open part 42a located facing the LED light source 28, which is closest to the through hole 42. Based on the foregoing, the light that passes through the light guide plate 20 and reaches the proximity of the guide pin 40, passes through the through hole 42 of the guide pin 40. Accordingly, the occurrence of uneven brightness of the light that exits the light guide plate 20 becomes less likely.

[0036] In the device 24 backlight, in accordance with the present embodiment, the reflecting sheet 26, which reflects light is provided between the light guide place the other 20 and the front surface 22 of the rear lights. The reflecting sheet 26 has openings 39 of the reflecting sheet, which pass through the reflecting sheet 26, in positions corresponding to the guide pins 40. Each of the guide pins 40 are inserted into the corresponding hole 39 of the reflecting sheet and is connected to each connecting groove. Accordingly, the guide pin 40 connects with the hole 39 of the reflecting sheet, thanks to the determined position of the reflecting plate 26 relative to the base 22 of the rear lights.

The second option exercise

[0037] Next, with reference to the drawings will be explained a second variant implementation. 6 depicts a perspective view with a spatial separation of the parts, illustrating the LCD device 110 display, in accordance with the second embodiment. In this document it is assumed that the upper side of figure 6 is a front side surface and the bottom side figure 6 is a rear side surface. As illustrated in Fig.6, the General form of a liquid-crystal device 110 display is a horizontally oriented rectangle, and liquid-crystal device 110 display includes a liquid crystal panel 116 as the display panel and device 124 backlight as the external IP is the light source. They jointly held by the top element a frame, the bottom element 112b frame side elements s frame (hereinafter referred to in this document called the group of elements 112a-112c framing), etc. Should be noted that since the structure of the liquid crystal panel 116 is similar to the structure described in the first embodiment, its description will be omitted.

[0038] Next will be described the device 124 backlight. As illustrated in Fig.6, the device 124 backlight includes a base 122 backlight, optical element 118, the upper element 114a of the frame, the bottom element 114b frame and side 114c elements of the frame (hereinafter referred to in this document called the group of items 114a-114c of the frame). The liquid crystal panel 116 is placed between the group elements 112a - 112c framing and group items 114a-114c of the frame. It should be noted that the reference position 113 is denoted by an insulating sheet, which isolates the management fee 115 (see Fig.7), which controls the liquid crystal panel 116.

[0039] the Base 122 of the rear lights is open toward the front surface (the side of the output light side of the liquid crystal panel 116) and essentially has a volume box shape having a bottom plate 122a. Optical element 118 in Berlin is located on the side of the front surface of the light guide plate 120. The base 122 of the rear lights puts on a pair of latches 131, 131 of the cable, a pair of heat sinks 119, 119, two pairs of blocks 132, 132, 132, 132, LED, each of which takes place in the long side direction and in the direction of the short side of the base 122 of the rear illumination of the reflecting sheet 126 and the light guide plate 120. The reflecting sheet 126 is located on the back surface of the light guide plate 120. Blocks 132 LED, light guide plate 120 and the reflecting sheet 126 are supported by rubber liner 133. Board power supply (not illustrated)that supplies power to block 132 LED, protective coating 123, which protects the card power supply, etc. is mounted on the rear surface 122 of the rear lights. A pair of latches 131, 131 of the cable are located in the direction of the short side of the base 122 of the rear lights, as well as place yourself in the wires, which electrically connect the blocks 132 of the LED Board power supply.

[0040] the Base 122 backlight includes a bottom plate 122a, which has a lower surface 122z, and side plates 122b and 122c, which slightly protrude from the outer edges of the bottom plate 122a, thereby supporting at least blocks 132 LED and light guide plate 120. Light guide plate is provided in the area of IU what do the two pairs of blocks 132, 132, 132, 132 LED. Light guide plate 120 and the optical element 118 is placed between a group of items 114a-114c of the frame and the base 122 of the rear lights.

[0041] Each of the heat sinks 119 has a cross section in the form of the letter L, which includes the area a surface and the bottom section 119b side surface protruding from one outer edge of the long side of the plot a bottom surface. Heatsinks 119 are located along one long side of the base 122 of the rear lights. Section 119a of the bottom surface of each heat sink 119 is fixed on the bottom plate 122a of the base 122 of the rear lights. A couple of blocks 132, 132 LED that run along each long side of the base 122 of the rear backlight, fixed on sites 119b side surface of the heat sink 119 so that the light guiding side to the light-receiving surface of the light guide plate 120. Accordingly, a pair of blocks 132 LED that run along each long side of the base 122 backlight, supported by the bottom plate 122a of the base 122 backlight using heatsinks 119. Heatsinks 119 radiate heat which is generated in blocks 132 LED outside device 124 backlight using the bottom plate 122a of the base 122 of the rear lights.

[0042] As illustrated in Fig.7, light place the ins 120 is located between a pair of blocks 132, 132 LED. Blocks 132 LED, light guide plate 120 and the optical element 118 is placed between a group of items 114a-114c of the frame and the base 122 of the rear lights. In addition, the management Board 115 is located on the side of the front surface of the lower element 114b of the frame. The management Board 115 is electrically connected with the panel display 116 and delivers the image data and various control signals that are required to display images on the liquid crystal panel 116. Light guide plate 120 is made into an elongated form. In addition, the reflective elements 134a located in the long side direction (Y axis direction) of the light guide plate 120 in the part which is on the surface of the lower element 114b frame and converted to blocks 132 LED along each long side of the base 122 of the rear lights. Reflective elements l34b are also a part which is located on the bottom surface 122z the base 122 of the rear lights, and turned to blocks 132 LED along each long side of the base 122 of the rear lights, while reflecting elements 134b are in the direction of the long side of the light guide plate 120. The configuration of the light guide plate 120, the optical element 118 and block 132 LED are similar to the configurations described in the first the om embodiment, and re-explained will not.

[0043] guide pins 140 are provided on the bottom plate 122a of the base 122 of the rear lights. Guide pins 140 are molded as a single piece with the bottom plate 122a of the base 122 of the rear lights. The reflecting sheet 126 has a hole 139 of the reflecting sheet. The location and configuration guide pins 140 and holes 139 reflecting sheet are similar to the location and configurations described in the first embodiment, and re-explained will not. The connecting sections 138 are made in the positions of the rear surface of the light guide plate 120, which correspond to the guide pins 140. The connecting sections 138 pass through the light guide plate 120. Each of the guide pins 140 are inserted into the corresponding hole 139 of the reflecting sheet. Thanks to the determined position of the reflecting sheet 126 relative to the base 122 of the rear lights. Guide pin 140 passes through the corresponding hole 139 of the reflecting sheet and the corresponding connecting section 138, thanks to what is determined by the position of the light guide plate 120 relative to the base 122 of the rear lights.

[0044] As described above, in the device 124 backlight, in accordance with the second embodiment, each of the sides is x surfaces of the light guide plate 120 has a light-receiving surface 120a and the blocks 132 LED, which are arranged in such a way that each of them was converted to the light-receiving surface of each side surface of the light guide plate 120. This ensures the device 124 backlight, in which the block 132 LED is located so that it was addressed to each of the side surfaces of the light guide plate 120.

[0045] In the device 124 backlight in accordance with the second embodiment guide pins 140 are molded as a single piece with the bottom plate 122a of the base 122 of the rear lights. Based on the foregoing, the guide pins 140 are in the process of manufacturing the base 122 of the rear lights. The creation of the guide pins 140 is simplified.

[0046] In the device 124 backlight in accordance with the second embodiment the light-receiving surface 120a has an elongated shape, and the reflecting elements 134a and 134b are provided between the block 132 LED and light guide plate 120 in the longitudinal direction of the light-receiving surface. Proceeding from the above, reflective elements 134a and 134b direct rays of light from block 132 LED, which are dispersed outside of the light guide plate 120, on the light guide plate 120. This increases the efficiency of reception of light, which is emitted from the block 132 and LED included in the light guide plate 120.

T the th option exercise

[0047] Next, with reference to the drawings will be explained a third option implementation. Fig.9 depicts an enlarged perspective view of the guide pin, which is provided in the backlight device, in accordance with the third embodiment, and corresponds to Figure 5 of the first variant implementation. In contrast to the first variant implementation, the backlight device of the third variant of the implementation includes a guide pin 240 and through holes 242 and 244, and the number and arrangement of the through holes 242 and 244 are different from the number and location of the first variant implementation. Other configurations are similar to the configurations that have been described in the first embodiment, and therefore, the configuration, operation and effects of re will not be explained. Figure 9 components are denoted by reference positions, each of which is similar to the reference position of the first variant of implementation, but to exceed two hundred.

[0048] In the backlight device, in accordance with the third embodiment, two through holes are formed on the peripheral surface of the guide pin 240. Two through holes 242 and 244 overlap, essentially, in their middle part, and the open portion 242a and 244a of each of the through holes 242 and 244 workers who are in transverse directions (in the directions indicated in Figure 9 by the letters A and B). Based on the above, if the power LED is located along the long and short sides, and the guide pin 240 is connected with a connecting section provided at a corner of the light guide plate, light from the LED unit provided along the long side, and the light from the LED unit provided along the short side, will easily pass through the through holes 242 and 244.

The fourth option exercise

[0049] Next, with reference to the drawings will be explained a fourth option implementation. Figure 10 depicts an enlarged view in perspective of the guide pin 340, which is provided in the backlight device, in accordance with the fourth embodiment, and corresponds to Figure 5 of the first variant implementation. In contrast to the first variant implementation, the backlight device of the fourth version of the implementation includes a guide pin 340 and through holes 342, 344, 346, and the number and location of through holes 342, 344, 346 are different from the number and location of the first variant implementation. Other configurations are similar to the configurations that have been described in the first embodiment, and therefore, the configuration, operation and effects of re will not be explained. Figure 10 components hereafter shall exist through a reference position, each of which is similar to the reference position of the first variant implementation, but three hundred greater than his.

[0050] In the backlight device, in accordance with the fourth embodiment, three through holes 342, 344, 346 are formed on the peripheral surface of the guide pin 340. Three through holes 342, 344, 346 are formed at different heights of the guide pin 340, and the open part of each through hole circulate in different directions. If there are three through holes 342, 344, 346 formed in the guide pin 340, the light will readily pass through the through holes 342, 344, 346 guide pin 340.

The fifth option exercise

Next, with reference to the drawings will be explained to the fifth implementation. 11 depicts an enlarged view in perspective of the guide pin, which is provided in the backlight device, in accordance with the fifth embodiment, and corresponds to Figure 5 of the first variant implementation. In contrast to the first variant implementation, the device backlight fifth variant of the implementation includes a guide pin 440 and through holes 342, 344, 346, which are exposed portion 342a, 344a, 346a. Other configurations are similar to the configurations that have been described in chetvert the embodiment, and therefore, configuration, operations and effects of re will not be explained. Figure 11 components are denoted by reference positions, each of which is similar to the reference position of the first variant of implementation, but to exceed four hundred.

[0052] In the backlight device, in accordance with the fifth embodiment, three through holes 442, 444, 446 are formed on the peripheral surface of the guide pin 440, each of the exposed parts 442a, 444a, 446a through holes 442, 444, 446 has different sizes. Among the three through holes 442, 444, 446, through hole 442, which is formed in a high position, has the largest public portion 442a, and the sizes of the exposed parts is reduced as it approaches the lower position (the open part 444a through hole 444 to the open portion 446a through holes 446). The dimensions of the exposed parts 442a, 444a, 446a are set in accordance with the distance between each open part 442a, 444a, 446a and LED light source, which converts each of the open portions 442a, 444a, 446a.

The sixth option exercise

[0053] Next, with reference to the drawings will be explained a sixth option implementation. Fig depicts an enlarged perspective view of the guide pin 540, which is provided in the backlight device, in accordance with the pole is m of the embodiment, and corresponds to Figure 5 of the first variant implementation. In contrast to the first variant implementation, the backlight device of the sixth variant implementation includes a guide pin 540, having a through hole, and the through hole has an open portion 540a, which is manufactured in a form different from the form of the first variant implementation. Other configurations are similar to the configurations that have been described in the first embodiment, and therefore, the configuration, operation and effects of re will not be explained. On Fig components are denoted by reference positions, each of which is similar to the reference position of the first variant implementation, but five hundred is greater than his.

[0054] In the backlight device, in accordance with the sixth embodiment, guide pin 540 on its peripheral surface has a through hole 542, and a through hole 542 has an open portion 542a. A through hole 542 and an open portion 542a are formed in a rectangular shape. In this configuration, the through holes 542 and an open portion 542a, the light that reaches the proximity of the guide pin 540 passes through the through hole 542. The light is less likely to be blocked by the guide pin 540.

[0055] the Similarity between the configuration of each variant implementation and configuration of the present invention is as follows. LED source 28, 128 light is an example of the light source. The base 22, 122 of the rear lights is an example of the containing element. The device 24, 124 of the rear lights is an example of the lighting device. Guide pin 40, 140, 240, 340, 440, 540 an example of the ledge.

[0056] Next will be described a modification of each of the embodiments.

(1) In the above embodiments, the implementation of the light source used LED light source, which is the source of the planar light. However, as a light source can be used a linear source of light, such as a gas discharge tube.

[0057] (2) as necessary may be cheating the shape of the guide pin, and the number and location of guide pins.

[0058] (3) as necessary may be cheating form through holes of the guide pin, and the number and location of holes.

[0059] (4) In the above embodiments, the implementation in the quality of the display panel uses a liquid crystal display device which includes a liquid crystal panel. The method can be used in display devices, which include displaying components of other types.

[0060] (5) In the above embodiments, the implementation uses the TV the receiver, which includes a tuner. However, the technology can be used in a display device without a tuner.

[0061] the described embodiments of, in accordance with the present invention. The present invention is not limited to variants of implementation, which was explained in the above description with reference to the drawings. For example, the above-mentioned modification can be included in the technical scope of the present invention.

[0062] the Technical elements described in the description or illustrated in the drawings, individually or in various combinations demonstrate technical applicability. The technical elements are not limited to combinations that are defined in the claims at the time of filing. Among other things, ways that are illustrated in the specification or on the drawings, at the same time delivering a variety of purposes, and achieve technical applicability for achieving implementation one of the goals.

The reference list of items

TV - TV tuner

Ca, Cb - Body part

T: Tuner

S: Stand

10, 110 is a Liquid crystal display device

12 - Borders

14 - Frame

16, 116 - LCD panel

18, 118 - Optical element

18a - Scattering sheet

18b - Lens sheet

18c-Polarization reflecting sheet type

20, 120 - Transmitting plate

20a, 120a - light-receiving surface

20b, 120b - Front surface (light guide plate)

20c, 120c - Rear surface (light guide plate)

22, 122 to the Base of the back illumination

22a, 122a, 222a, 322a, 422a, 522a - bottom plate

22b, 22c, 122b, 122c - Side plate

24, 124 Device backlight

26, 126 - Reflective sheet

28, 128 - LED light source

30, 130 Plata LED

32, 132 - Unit LED

38, 138 - connecting section

39, 139 - Hole reflective sheet

40, 140, 240, 340, 440, 540 - Guide pin

42, 142, 242, 342, 344, 346, 442, 444, 446, 542 - a Through hole

42a, 442a, 444a, 446a, 542a, 544a, 546a - Open part (through hole)

112a - Top element of the frame

112b - Bottom framing

112c - Side element of the frame

113 - Insulating sheet

114a - Top element of the frame

114b - Lower frame element

114c - Side frame element

115 Management fees

119 - Heat

119a - the Area of the lower surface

119b - Part-side surface

123 - Protective coating

131 - cable Lock

134a, 134b - Reflective element.

1. Lighting device, comprising:
the light source;
light guide plate having a light-receiving surface on its lateral surface that faces to the light source and the light guide plate you olnine with light, emitted from the light source and the light-receiving surface; and
the enclosing element, which includes:
lower plate having an outer edge and a major surface;
side plate rising from the outer edge on the side of the main surface; and
a protrusion extending from the main surface of the lower plate and having at least one through hole formed on its side surface and through the protrusion, and the enclosing element comprises a light source and a light guide plate on the side of the main surface of the lower plate;
the lighting device further comprises:
the connecting section provided on the light guide plate so as to be advanced or educated through the light guide plate in accordance with the protrusion, while the connecting section configured to connect with the tab.

2. The lighting device according to claim 1, in which the through hole has an open part formed in the protrusion so that the open part facing the light source, which is the closest to the through hole.

3. The lighting device according to any one of claims 1 and 2, additionally containing:
the reflecting sheet provided between the light guide plate and the main surface of the containing element and made the possibility of reflection of light, moreover, the reflecting sheet has a hole reflecting sheet, which is formed through the reflective sheet and corresponds to the protrusion, and:
the protrusion is inserted through the hole of the reflecting sheet in the reflecting sheet and connected with the connecting section.

4. The lighting device according to any one of claims 1 and 2, in which:
light guide plate has a lot of side surfaces of the as many light-receiving surfaces; and
the light source includes multiple light sources, and light sources are arranged in such a way as to be adjacent to each of the light-receiving surfaces of the side surfaces of the light guide plate.

5. The lighting device according to any one of claims 1 and 2, in which the bottom plate of the bearing element and the protrusion is formed as a single unit.

6. The lighting device according to any one of claims 1 and 2, additionally containing a reflective element provided between the light source and the light guide plate, and:
the light-receiving surface is formed into an elongated shape; and
a reflective element provided along the elongated light-receiving surface.

7. A display device, comprising:
the lighting device according to any one of claims 1 to 6; and
a display panel, configured to provide display using light from the OS is Metelkova device.

8. The display device according to claim 7, in which the display panel is a liquid crystal panel using liquid crystals.

9. Television receiver containing the display device according to any one of claims 7 and 8.



 

Same patents:

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10 cl, 29 dwg

FIELD: physics, computer engineering.

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12 cl, 10 dwg

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8 cl, 12 dwg

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15 cl, 12 dwg

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10 cl, 14 dwg

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23 cl, 10 dwg

FIELD: electricity.

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16 cl

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19 cl, 12 dwg

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8 dwg, 1 tbl

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3 cl, 2 dwg

FIELD: physics.

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3 cl, 5 dwg

FIELD: technological processes.

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32 cl, 16 dwg

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2 dwg

FIELD: electricity.

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22 cl, 29 dwg

FIELD: electricity.

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EFFECT: improving efficiency.

13 cl, 7 dwg

FIELD: electricity.

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26 cl, 17 dwg

FIELD: physics.

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16 cl, 6 dwg

FIELD: electricity.

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EFFECT: reduced heterogeneity of brightness of a display panel without increase in number of process operations.

15 cl, 12 dwg

FIELD: physics, optics.

SUBSTANCE: backlight for a colour liquid crystal display includes white light LEDs formed using a blue LED with a layer of red and green phosphors over it. In order to achieve a uniform blue colour component across the surface of a liquid crystal display screen and achieve uniform light output from one liquid crystal display to another, the leakage of blue light of the phosphor layer is tailored to the dominant or peak wavelength of the blue LED chip. The backlight employs blue LED chips having different dominant or peak radiation wavelength.

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15 cl, 13 dwg

Lamp // 2521865

FIELD: electricity.

SUBSTANCE: invention relates to lighting engineering. A lamp (100) contains at least one light-generating element (2), a partially transparent lampshade (5) placed around the light-generating element (2) over the angle of at least 180°, but 360° is more preferable, at least one liquid crystal screen (10) placed between the light-generating element and the lampshade, and a controller (20) to control the liquid crystal screen so that it has sections of mutually variable light transmission in the range of 0% and 100% so that an image is displayed. In the horizontal cross-section the liquid crystal display is continued in two dimensions with its concave side faced to the light-generating element. The liquid crystal screen should be flexible preferably so that it may be bended and shaped cylindrically around the light-generating element.

EFFECT: change in light colour and intensity.

13 cl, 8 dwg

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