Illumination device

FIELD: physics.

SUBSTANCE: illumination device has at least one light source and at least one diffuser. The diffuser consists of at least one scattering polymer element in whose transparent polymer mass there are transparent scattering bodies. The diffuser covers at least one or more light sources and is made in form an external housing component of the illumination device. The scattering bodies have a narrow Gaussian multimodal distribution.

EFFECT: simple design, fewer light sources required, more uniform illumination.

14 cl, 5 dwg

 

The invention relates to a lighting device, at least one light source and at least one diffuser.

Such lighting devices are widely spread. For example, such lighting devices are used in cars, where they have the shape of a tail light or main light. In the rear lights or the main headlight are usually at least a light source reverse and additionally, for example, the stop signal. Recently there has been a tendency to integrate, for example, the turn signals in the tail light with the light source, reverse and stop-signal and/or, for example, the indicator in the main spotlight.

One type of traditional lighting devices with multiple light sources, for example, due to the optics of transparent glass, without limitation, to see everything behind the items. However, the developers of automotive lamps, for example the main headlight, turn signal and/or the rear lights are often required, so that outwardly they had a uniform appearance. In accordance with this, it is undesirable to have integrated in main headlight colored lights, ie, for example, yellow turn indicator and colorless dim light, this color difference was noticeable from the outside, if not included neither of the two lights. Th is would create lighting with multiple light sources, for example, lighting devices for General lighting, main headlights, turn signals, and/or rear lights of vehicles, or other lighting devices, in which it is impossible to see everything behind the items that already are in operation lights with the corpus Christi glasses that have presmerovana and the like on the output or input surface. Due preservando the surface of the directional light emission from each light source is refracted and/or reflected in different directions depending on where the surface light radiation falls on the corpus Christi glass. Thus, directional light radiation is converted to primarily diffuse light radiation. This is achieved, firstly, the fact that you can see behind the corpus Christi glass parts is impossible, and secondly, when the light sources they seem on the outside, basically, the only homogeneous light source. However, the use presmerovany corpus Christi glass has the disadvantage that they are complicated to manufacture, since casting it is necessary to create a certain surface structure. In addition, in many cases preservance corpus Christi glass is undesirable for design reasons, because, for example, preferred is a single appearance of the headlights and body.

Improved form of such ossetiaingushetia disclosed in DE 19818009 C2. This publication describes multi-layer diffuser for the rear of the block-lights-road vehicles. This diffuser consists mainly of three-dimensional deformed polymer film and at least one reinforcing layer of plastic, which is applied by spraying on the three-dimensional deformed polymer film. This should prevent technologically sophisticated creation preferowanych for one light-diffusing optical elements on the inner surface of conventional diffusers. The diffuser can be composed according to this publication, made of polycarbonate, which includes a solid or hollow balls uniformly dispersed scattering pigments. Disclosed in this publication, the diffuser is, therefore, the improvement described in the previous section presmerovany corpus Christi glasses. The lack disclosed in this publication device, however, is that the proposed multi-layer structure is difficult to manufacture because it requires a way to create multilayer structures. Because according to claim 4 of the present publication it is proposed that the thickness of the layer forming the diffuser polymer film is 50-700 μm, the disadvantage is applying a reinforcing layer to achieve required for the corpus Christi glass structural prochnosti the basis of the invention lies therefore the task of creating a lighting device, at least one light source and at least one diffuser, which would have a simple design and it would be cost-effective to manufacture.

This problem is solved by a lighting device, at least one light source and at least one diffuser, the diffuser consists of at least one dispersing polymer element, which in a transparent polymer mass sealed transparent-scattering body and in which the diffuser covers at least one or more light sources and is made in an external Cabinet parts of the lighting device.

The advantage of this solution is that the transparent polymer mass performs the function of the reinforcing layer and diffuser. Thus, with the big advantage of using only one part, consisting, for example, of a transparent polymer mass with sealed transparent-scattering bodies can be constructed, for example, the light fixture for General lighting, the main headlight, turn signal and/or tail light, for example, vehicles or other lighting device, the external-piece body which performs the function of light scattering. When the application is constructed according to the invention the lighting device, predpochtitel is about, to reduce the number of light sources. For example, using the lighting device according to the invention, the lighting devices for General lighting, automotive main headlight, turn signal and/or rear lights for vehicles, industrial lighting fixtures, illuminated billboards, manufactured by deep drawing of lighting devices, such as square panels with neon lamps, as they are used in railway stations, lighting fixtures great length or other lighting devices, illuminated by a set of LEDs or the many other light sources, you can use fewer LEDs or other light sources than traditional lighting devices of the described kind with LEDs or other light sources, because the internal scattering properties of Cabinet parts convert the first directional radiation of LEDs or other light sources to diffuse substantially light generation. From a design standpoint, this has the advantage that the light fixture for General lighting, headlight, turn signals or tail lights for vehicles or any other lighting device according to the invention, seen uniformly illuminating, and multiple light sources separately are not visible. In cases cordevole lighting device has multi-colored light sources, for example, the integrated turn indicators and rear lights and/or the main headlights, the use of the lighting device according to the invention has also the advantage that the color differences in daylight is not included in the invisible state. Occurs, therefore, it is often desired by developers uniform appearance of the lighting device.

One particularly optimal variant of the transparent polymer mass selected from the group of polycarbonates. Polycarbonates have the advantage that they have particularly favorable properties, particularly preferred are impact strength at low temperatures and high temperature resistance. In addition, the polycarbonates have a temperature of processing, particularly well suited for injection molding. The use of polycarbonates as a replacement for glass in lighting devices according to the invention has in particular the advantage of reduction in the mass. This is because the density of polycarbonate by more than a factor of 2 less than the density of the glass. In addition, the polycarbonate in most cases cheaper glass. Especially suitable are hereinafter referred to as fire-resistant and high temperature polycarbonates.

When the use of polycarbonates in the form of a transparent polymer mass is particularly preferred d is I the scattering properties was that what mass fraction included transparent-scattering bodies is 0.0001-10%, mainly 1%, while the scattering of the body have a size of 0.1-5 μm, mostly 2.5 μm. Further, to achieve optimum uniformity of light in relation to the angle of radiation is beneficial, if the magnitude of the scattering bodies has a narrow Gaussian distribution of various quantities. Particularly suitable turned out to be bi - and multimodal narrow Gaussian distribution. Especially good scattering properties are achieved when the inclusions are mostly spherical in shape. When the adulteration of scattering bodies to the polycarbonate unexpectedly found that, in particular, the desired mechanical properties of polycarbonate are saved. Therefore, the mechanical properties of the polycarbonate adulteration of scattering bodies, preferably, not have a negative impact. The use of polycarbonate enabled, as already mentioned, the scattering bodies has further the advantage that, for example, in daylight occurs perceived by developers as a particularly attractive dark appearance when the light sources are not included. In addition, the polycarbonate may be arbitrarily painted, so can be implemented in arbitrary color design requirements.

According to one particular variant of the lighting device is ipodnano in the form of a light fixture for General lighting. Compared with traditional lighting fixtures for General lighting, usually consisting of glass, lighting device according to the invention, has the advantage of roughly half of smaller mass. In addition, made according to the invention a lighting fixture for General lighting is preferred in respect of operational safety, since there is no risk of being injured by shards of glass, for example, due to external shocks or triggered by the collapse of body heat destruction of the light unit. In addition, made according to the invention a lighting fixture for General lighting can be manufactured, preferably less than traditional lighting, which often consist of glass. Execution of the lighting device according to the invention as a light fixture for General lighting in addition, it is preferable because, for example, when using polycarbonate as a plastic element excellent formability of this material allows to produce for General lighting lighting devices of almost any form. This can preferably optimally to meet current design trends in the market of lighting fixtures for General lighting.

According to another preferred variant of the lighting device made in the form of flashing svetiogoria, in particular in the form of turn indicator for vehicles, in particular cars. This indicator compared to traditional premirovanii or made of glass indicator preferred because of economy of the mass compared with the light devices of PMMA or in comparison with glass lights. In addition, it is more cost-effective to manufacture than traditional presmerovany and/or made of PMMA or glass indicator. In particular, it is possible to meet mark in the automotive market trends to smaller turn signals, and simultaneously observe the following rules of the road requirements for good recognizability of the indicators as possible in a wider range of angles of view.

If, according to one embodiment of the invention, the lighting device made in the form of rear and/or front of the headlight for vehicles, in particular cars, you can, for example, to integrate the turn signals into the main spotlight. It is possible, for example, to selectively provide only section of the multipurpose lighting device of the scattering material, which covers, for example, light indicator, to expand it, not expanding at the same time, for example, the amount of light of the main headlights. When the application is about different colored plastics in different sections of the multi-function lighting device can easily realize the actual design requirements.

According to another optimal variant of the invention, the lighting device is designed as a tail light for vehicles, in particular cars. Here when integrating multiple lighting devices, such as turn signal, light source, reverse and stop-signal in one chassis is achieved by reducing the number of parts required for homogenization emitted, for example, LEDs or incandescent lamps or gas discharge lamps light radiation, with the advantage of lower production costs. Preferred in the application of the polycarbonates is, in addition, that this material is already very common, especially in the automotive industry for the manufacture of diffusers. Therefore, it is possible largely to abandon the special procedures for the admission of this material in respect of the application for housing headlights. Mechanical and thermal resistance of the polycarbonates are preferred, in particular, the use of the material for the body parts of vehicles on land, on water and in the air.

According to another variant of the invention, the lighting device made in the form of the main lights for vehicles, in particular cars. When, in particular, the cars in the main Faro integrated that the same indicator, this has the advantage that small in most cases relative to the headlamp light source to create a flashing light is converted in the scattering diffuse over a large area light. Thus, with the great advantage of significantly improving the appearance of the indicator. In addition, the creation of diffuse light radiation for a turn signal indicator has the advantage that it is distinguishable mainly under all available angles. In particular, for road safety distinguishability from vehicles is particularly important for pedestrians or for those with secondary roads. Due to the fact that the corpus Christi glass combines both the properties of the lamp housing and the lens, it is impossible to see the internal components of the headlight, in particular lenses within it. This reduces the risk of vandalism.

In one embodiment, a lighting device is made in the form of a Billboard. The advantage is that thus guaranteed the desired billboards uniform and homogeneous lighting while reducing used for lighting the light sources. In particular, in cases where lighting advertising Board is a matrix of LEDs, the number of pixels with the great advantage of reducing costs can be reduced is prohibited due to the scattering properties of the housing material. The integration of the scattering functions directly in the housing part preferably leads to a very simple design Billboard. If a Billboard, according to the invention, is used to replace traditional advertising Board, PMMA or similar material, is achieved weight reduction. In addition, in the case of destruction of a Billboard, for example as a result of vandalism, significantly less risk of injury occurs due to the fact that polycarbonate does not break into small pieces.

The lighting device according to the invention, made according to one embodiment of the invention in the form of a bedroom lamp. This is especially economical to perform frequently required, in particular interior designers, the requirement of uniform diffuse lighting as low as possible the number of light sources. Due to the fact that the creation of diffuse light is inside the room lamp inside the room lamp does not require any additional optical devices. This significantly reduces the complexity in manufacturing. As a result, a homogeneous distribution emitted by the light sources of light radiation can reduce the number of required light sources, including incandescent lamps or LEDs, Snicket, in addition, the advantage of particularly low maintenance indoor lamp.

According to another variant of the invention, the lighting device made in the form of a courtesy light for vehicles, in particular cars. Due to the fact that the courtesy light due to their scattering properties creates a mostly diffuse light, creating internal lighting, which in itself largely eliminates unwanted glare for the driver, often resulting in ceiling interior light with directional radiation. Since the scattering is provided by the internal optical properties of the hull, made in accordance with one embodiment of the invention the cover interior lighting for vehicles, you can refuse technologically complex and often undesirable from a design standpoint, presmerovany or similar plastic structuring the surface. Due to this can be reduced manufacturing costs. This variant embodiment of the invention is also well suited for use as lighting of interior or the passenger compartment of the aircraft.

Another variant of the invention provides that the lighting device made in the form of a salt is any emergency switches. In this case, because almost arbitrary formemost polymer material of the lighting device can preferably be used for various types of emergency switches, and emergency stop switches illuminated in such a way that they do, on the one hand, alarm function, and on the other hand, also the lighting function. So, using the emergency switch according to the invention, can be a great advantage marked emergency exits in the buildings, industrial plants, ships or aircraft. With particular advantage is that due to the diffuse light of the visible light at a large angle of view, resulting in increased security. It is in the area of emergency switches has the same large value that does not apply the glass, which, for example, due to breakage in case of an emergency could create additional hazards.

Underlying the invention is a particularly effectively solved, in addition, due to the plastic with sealed reflector, in which the quality of the plastic is selected polycarbonate-Acrylonitrile-butadiene-styrene PS-ABS.

This material is for solving the problem of the preferred property that he, on the one hand, is galvanisiertem, and on the other hand, has a strong light-diffusing svoistvami by galvanizirovali guaranteed on the surface of the material by known methods can be applied adhesive metallic coating, for example, it may be chrome-plated. Due to the inclusion of ABS material unexpectedly becomes thus due to the higher light scattering best transmission. This unexpectedly primarily because of butadiene, as is known in itself has a light absorbing property. The invention is described as an example in the preferred embodiment, its implementation with reference to the drawing, which shows:

- figure 1: schematically a lighting fixture for General lighting;

- figure 2: schematic of another light fixture for General lighting;

- figure 3: schematic of the rear block headlamp;

- figure 4: schematic location of the indicator on the vehicle;

- figure 5: schematic of the rear lamp with multiple light-emitting diodes as light sources.

1 schematically depicts an elongated light fixture 11 General lighting. In the inner space 12 of the light unit 11 General lighting is the source 13 of the light. The diffuser 14 of the light unit 11 General lighting has a rectangular shape and is made of polycarbonate with adulteration of spherical scattering phone Thanks to the excellent formemost polycarbonate, on the mechanical properties of which are not affected by the adulteration of the scattering bodies, apart from Braunau rectangular shape in the framework of the invention are possible in almost any arbitrary shape. Rectangular diffuser 14 is divided into upper side 15 into three sections 16, 17, 18. In this section consist of colored differently polycarbonate. Source 13 emits light mainly focused light beam 5. The focused light beam 5 is converted into consisting of polycarbonate enabled scattering bodies of the diffuser 14 in diffuse light radiation 8. Thus, the light fixture 11 for General lighting, which can have almost any shape, which mainly focused light 5 source 13 and the light is converted into a homogeneous diffuse light radiation 8. In addition, the white light source 13 and light is emitted in a colour that each section can be different.

Figure 2 schematically shows another light device 11 General lighting source 13 of the light in the diffuser 14. Luminous device 11 shown in partial section. The diffuser 14 covers the source 13 of the light in the lateral direction koltseobrazno in the form of the lateral surface in the form of caps on the top and bottom sides. The diffuser 14 is made of polycarbonate with adulteration of spherical scattering bodies 3. Source 13 emits light mainly focused light beam 5. Inside the diffuser 14 focused light beam 5 mnogokrat what about the scatters and converted thus, in diffuse light radiation 8. Additionally, due to the light guide effect of the diffuser made of polycarbonate mixed with spherical scattering bodies 3, the light emitted over the entire surface 19 of the lens 14 diffuse.

Figure 3 schematically shows the outer side of the rear block lights for cars. The diffuser 14 is divided into sections 16, 17, 18 and consists of a polycarbonate with the adulteration of spherical scattering phone Section 16 is made of polycarbonate, painted red, section 17 - polycarbonate, painted yellow, and section 18 - a of the transparent uncolored polycarbonate. Inside the housing 4 of the rear light units are three LEDs 1, each of which is attached to one of the sections 16, 17, 18. Each of the led 1 emits a focused light beam 5. The focused light multiply scattered scattering bodies, mixed with the entire volume of the body 4, and exits the diffuser 14 in sections 16, 17, 18 in the form of diffuse light radiation 8.

Due to this special run is created in the rear block headlamp, which is painted red section 16 performs the function marker light, painted yellow section 17 - function turn signal, and an unpainted section 18 - the function of the reversing light. Due to multiple scattering the Board inside the diffuser 14 guaranteed good distinguishability of light at different angles and, in addition, the planar lighting of each section 16, 17, 18.

Figure 4 schematically depicts the location of the pointer 20 turning on the car. Pointers 20 rotate, made of polycarbonate with on the scattering bodies emit diffuse light radiation 8. Emitted by each pointer 20 turn diffuse light radiation 8 may well be different observers 21 and 22, although observers 21, 22 consider the pointers 20 rotate under very different from each other angles of view.

Figure 5 shows a stop signal containing three LEDs 1. LEDs 1 are inside the diffuser 2 of the stop signal. The lens 2 is made of polycarbonate with adulteration of spherical scattering bodies 3. The lens 2 forms at the same time building 4 tail light.

When working tail light, each of the led 1 emits mainly focused light beam 5. The focused light beam 5 of each of the LEDs 1 falls on the inner side 6 of the lens 2. When the focused light beam 5 does not fall on an unlit section 9 of the surface of the inner side 6 of the lens 2. Inside the diffuser 2 tail light focused light beam 5 scatters many times included in the polycarbonate of the scattering bodies 3. Diffuse light comes on the outer side 7 of the lens 2. Also the opposite is not lit areas 9 the surface of the inner side 6 of the lens 2, sections 10 surface emit on the outer side 7 of the lens 2 diffuse light radiation 8. Thus, made of unexpectedly small number of parts tail light managed to reach the emission of diffuse light radiation 8 from the entire outer side 7 of the lens 2, while the focused light beam 5 led 1 does not illuminate areas 9 surface on the inner side 6 of the lens 2.

List of used symbols

1. Led

2. The diffuser

3. The scattering body

4. Cabinet detail

5. Focused beam of light

6. Inside

7. The external side

8. Diffuse flow of light

9. The surface area

10. The surface area

11. The light source for General lighting

12. The internal space

13. The light source

14. The diffuser

15. The upper side

16. Section

17. Section

18. Section

19. The outer surface

20. The indicator

21. Observer

22. Observer

1. Lighting device, at least one light source and at least one diffuser, wherein the diffuser (2) consists of at least one dispersing polymer element (2), whose PR is transparent polymer mass (2) is added to the transparent-scattering body (3), while the diffuser (2) covers at least one or more sources (1) light and made in the form of an external Cabinet parts (4) of the lighting device, and the amount of scattering bodies has a narrow Gaussian multimodal distribution.

2. The device according to claim 1, characterized in that the transparent polymer mass (2) painted.

3. The device according to claim 1, characterized in that the transparent polymer mass (2) is selected from the group of polycarbonates.

4. The device according to claim 1, characterized in that the polycarbonate is fire-resistant and/or heat resistant.

5. Device according to one of claims 1 to 4, characterized in that it is made in the form of a light fixture for General lighting.

6. Device according to one of claims 1 to 4, characterized in that it is made in the form of a flashing light device, in particular in the form of turn indicator for vehicles, in particular cars.

7. Device according to one of claims 1 to 4, characterized in that it is made in the form of rear and/or front of the headlight for vehicles, in particular cars.

8. Device according to one of claims 1 to 4, characterized in that it is made in the form of tail light for vehicles, in particular cars.

9. Device according to one of claims 1 to 4, characterized in that it is made in the form of the main lights for vehicles, in particular the car.

10. Device according to one of claims 1 to 4, characterized in that it is made in the form of a Billboard.

11. Device according to one of claims 1 to 4, characterized in that it is manufactured as a room lamp, in particular a ceiling lamp large area.

12. Device according to one of claims 1 to 4, characterized in that it is made in the form of a courtesy light vehicles, in particular cars.

13. Device according to one of claims 1 to 4, characterized in that it is made in the form of emergency lighting switch.

14. Polymer with a sealed light-diffusing means, intended for the manufacture of polymeric element (2) of the lighting device according to any one of claims 1 to 13, and represents a polycarbonate-Acrylonitrile-butadiene-styrene (PC-ABS).



 

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Searchlight // 2302585

FIELD: lighting engineering.

SUBSTANCE: searchlight comprises Fresnel lens, reflector, lamp, and at least one additional Fresnel lens. The additional Fresnel lens is made of a lens with negative focus distance and, hence, is a dispersing lens having virtual focus point. The distance (a) between the Fresnel lens and reflector can be changed in correlation with the distance (b) between the lamp and reflector on the basis of the aperture angle determined for the light beam. The virtual focusing point of the dispersing lens is positioned out of the unit of the Fresnel lens, and it can be in coincidence with the focusing point of the reflector that is located far from the reflector. The Fresnel lens is made of a double-concave dispersing lens and has double lens with chromatically corrected characteristics of imaginary. The searchlight has Fresnel lens with integrated diffusion round window that is positioned at the Fresnel lens center and defines the system for mixing light which changes the ratio of the scattered light to the reflected light. The distance (b) can be controlled by moving the lamp with respect to the top of the reflector. The reflector is made of metallic or transparent dielectric material, preferably glass or/and plastic, and represents an ellipsoidal reflector. The Fresnel lens is coated with the dielectric interference layers that change the light spectrum passing through them. The auxiliary reflector is interposed between the Fresnel lens and reflector.

EFFECT: reduced sizes and efficiency.

20 cl, 8 dwg

Illumination device // 2398996

FIELD: physics.

SUBSTANCE: illumination device has at least one light source and at least one diffuser. The diffuser consists of at least one scattering polymer element in whose transparent polymer mass there are transparent scattering bodies. The diffuser covers at least one or more light sources and is made in form an external housing component of the illumination device. The scattering bodies have a narrow Gaussian multimodal distribution.

EFFECT: simple design, fewer light sources required, more uniform illumination.

14 cl, 5 dwg

Dental illuminator // 2403494

FIELD: physics.

SUBSTANCE: illuminator has a housing in which there is a base in whose socket of which parabolic-shaped reflectors are screwed in. Powerful light-emitting diodes are fitted at the focus of the reflectors. The housing is closed by a transparent cover made from polycarbonate. There are light filters between the base and the cover. The light-emitting diodes are placed on the base symmetrically about the axis of the illuminator. Light-emitting diodes placed nearby have different spatial orientation based on the condition for obtaining a uniformly illuminated elliptical light spot, and the light-emitting diodes lying opposite each other have a reflection symmetric spatial orientation. There is a switch on the housing. The housing of the illuminator is joined to a suspension on which a unit for controlling brightness of the illuminator is mounted.

EFFECT: provision for a light spot which meets ISO 9680 requirements with simplification of the design and miniaturisation.

2 cl, 4 dwg

FIELD: physics.

SUBSTANCE: optical device has at least a first separate part (10) in form of a solid waveguide and an additional separate part (10") for connecting with the light-emitting diode (LED) light source. The first separate optical part (10) narrows in the direction z in a Cartesian coordinate system from the x-y plane, has longitudinal length in the direction y which is less than or equal to its longitudinal length in the directions z and x, and has first and second flat outer surfaces (14), lying oppositely in the x-z plane, third and fourth outer surfaces (16, 20) essentially lying opposite in the x-y plane, and fifth and sixth oppositely lying outer surfaces (7), arched and rounded relative the y-z plane. The third outer surface (16) has a rectangular shape. The fifth and sixth outer surfaces (7) are arched such that the fourth outer surface has size in the direction x less than the size of the third outer surface. The third (16), fifth and sixth (7) outer surfaces are primary surfaces for light output, and the light source (6) is entirely placed in the optical device opposite the light output surface (3, 23).

EFFECT: emission of focused light, having a given intensity distribution curve.

9 cl, 4 dwg

FIELD: physics.

SUBSTANCE: light-emitting device (10) has a light-emitting element (1) and an element (2) for controlling light emitted by the light-emitting element (1). The light flux control element (2) has (i) a light-receiving surface (2a) on which light emitted by the light-emitting element (1) falls, and (ii) a light-emitting surface (2b).

EFFECT: high uniformity of light intensity, low reflection coefficient due to Fresnel reflection, improved scattering characteristics.

13 cl, 21 dwg

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