Lighting device for a motor vehicle

Abstract

The invention relates to a lighting device for a motor vehicle, comprising at least one light source (9). The invention relates to a lighting device for a motor vehicle, in particular a motor vehicle, in particular a motor vehicle, in particular a motor vehicle, in particular a motor vehicle, in which light (16) emitted from the lighting device impinges on a body surface (17, 17 ', 17' ') of the motor vehicle or on a reflecting device arranged on the body surface of the motor vehicle, and the light is at least partially reflected by the body surface or the reflecting device in such a way that the light moves away from the motor vehicle, comprising a light guide (1), the invention relates to a lighting device (1) for a motor vehicle, comprising a light guide (2) for an entrance surface (4) and for an exit surface (5), which light guide extends at least partially through an opening (2) of a vehicle body (3) of the motor vehicle in the state in which the lighting device is inserted into the motor vehicle and projects outward from the opening away from the vehicle body, said exit surface being arranged outside the vehicle body, the light guide is arranged such that the light emitted by the light guide directly reaches the exterior of the motor vehicle.

Description

Technical Field

[0001] The present invention relates to a lighting device for a motor vehicle according to the preamble of claim 1. Background Technology

[0002] Typical taillights have been designed to include a housing and a visor, with internal components or design elements of an optical system arranged between the housing and the visor, which, for example, form a visible light mark for taillights or brake lights.

[0003] A lighting device of the type described at the beginning is known from DE102023108414A1. The described lighting device is constructed for the rear area of ​​a motor vehicle and includes a light source, a housing, a cover plate, and a reflector. The light source is arranged in or within the housing, the cover plate at least partially covers the housing, and the reflector is arranged outside the housing. The lighting device is designed such that, in the installed state, light generated by the light source is at least partially emitted from the housing of the lighting device through the cover plate, such that the light emitted through the cover plate at least partially hits the reflector and is at least partially reflected by the reflector, causing the light to move rearward away from the rear area of ​​the motor vehicle. Here, the reflector may be arranged on the surface of the motor vehicle body. Summary of the Invention

[0004] The problem upon which this invention is based is to provide a lighting device of the type described at the beginning, which has a different construction from the taillights depicted and is able to achieve: saving components compared to the prior art, and in particular, thus constructing a lighting device more durable due to material savings despite high styling requirements.

[0005] According to the invention, this is achieved by a lighting device of the type described above having the features of the characteristic portion of claim 1. The dependent claims relate to preferred embodiments of the invention.

[0006] According to claim 1, the lighting device includes a light conductor having an incident surface for light generated by a light source and at least one exiting surface for light incident on the light conductor through the incident surface, wherein the light conductor, when the lighting device is installed in a motor vehicle, extends at least partially through an opening in the vehicle body and extends outward from the opening away from the vehicle body, wherein the at least one exiting surface is arranged on the exterior of the vehicle body such that light emitted from the light conductor directly reaches the exterior space of the motor vehicle. Here, by having light directly exit from the exiting surface into the exterior space of the motor vehicle, an independent design is achieved on the one hand, and materials for unnecessary coverings or visors are saved on the other.

[0007] It is feasible to arrange at least one emitting surface, or one of the emitting surfaces, in the direction of the opening through which the light conductor extends through the vehicle body on the side and / or front side. In particular, the at least one emitting surface, or one of the emitting surfaces, is the lower surface of the light conductor when the lighting equipment is installed in the vehicle, and the light is emitted downwards from the lower surface during operation of the lighting equipment. This configuration allows light emitted downwards from the light conductor toward the vehicle body surface or reflector to be reflected rearwards from the area below the light conductor. This rearward-reflected light can, for example, function as a taillight. Advantageously, this increases the overall emitting surface area and achieves better visibility of signal functions, such as taillights, brake lights, or driving direction indicators.

[0008] Here, the implementation scheme of the vehicle body surface affects the visibility of the rear-reflected light. In the case of a smooth vehicle body surface, the angle between the vehicle body surface and the emitting surface is decisive for visibility and light reflection at the vehicle body surface. Advantageously, it is desirable to have broadly scattered light radiation emitted from the light conductor, ensuring that the beam always strikes the vehicle body surface at a suitable angle so that it is reflected and visible to the observer. Furthermore, it can be specified that the vehicle body surface is coated with a film having a structure or texture that advantageously provides diffuse light reflection. Furthermore, it can be specified that the paint on the vehicle body in the area is achieved with a matte structural paint, which advantageously provides diffuse light reflection. Additionally, additional components serving as reflective devices can be provided on the vehicle body surface, for example, as a transparent sheet with an optical structure. The transparent sheet can also be equipped, for example, with a holographic film, wherein the integrated hologram is implemented as a reflective hologram for shaping the light distribution. Advantageously, the transparent structured sheet can be mounted on any vehicle body with any set color. Instead of a transparent sheet, an opaque sheet with a reflective and diffusely scattering surface is also feasible.

[0009] For example, it can be specified that the first emitting surface attached to the lower part of the light conductor also has a second emitting surface, which can be arranged at the end of the light conductor facing away from the vehicle body. Therefore, a portion of the light moving through the light conductor does not exit downwards through the lower first emitting surface, but exits directly rearwards from the light conductor. This rear emitting surface is particularly horizontally extended and constructed to be narrow. Besides its function as ambient lighting on the vehicle body surface, illuminating the vehicle body downwards through the first emitting surface can also be important for the type approval of optical technology. If a minimum area size is legally stipulated for the light function, but this minimum area size cannot be provided by the area or partial area of ​​the rear emitting surface of the light conductor, then the additional luminous area on the vehicle body can be added to the luminous area of ​​the rear end of the light conductor to meet the minimum area requirement overall.

[0010] It is feasible to have a deflecting surface on the light conductor, designed to redirect light moving through the light conductor (especially by total internal reflection) toward the exiting surface, particularly toward the lateral, preferably lower, exiting surface. Here, the deflecting surface can be arranged on the side of the light conductor away from the exiting surface, and in particular, on the upper side of the light conductor when the lighting equipment is installed in the vehicle. This deflecting surface ensures that a large portion of the light moving through the light conductor is redirected toward and coupled out from the exiting surface to illuminate the vehicle body surface or components on the vehicle body surface used as reflectors.

[0011] It can be stipulated that the normal on the steering surface forms an angle with the vertical direction that is not equal to 0° when the lighting equipment is installed in the vehicle. In particular, the normal on the steering surface forms an angle with the vertical direction that is between 10° and 60°, preferably between 20° and 50°. By selecting an appropriate angle for the steering surface, the direction along which light exits from the emitting surface can be adapted to the inclination of the vehicle body surface to be illuminated.

[0012] It is feasible to have a light conductor with at least one prism, and more particularly multiple prisms, arranged in or adjacent to the turning surface and facilitating the redirection of light traveling through the light conductor toward the exit surface. By adding the at least one additional prism near the turning surface, the surface that facilitates light redirection can be increased, allowing more light to be redirected toward the exit surface.

[0013] Furthermore, it is feasible to arrange a reflective film and / or a reflective housing component on the outer side of the turning surface to reflect the light emitted from the turning surface back into the light conductor. This measure also increases the proportion of light turned onto the emitting surface.

[0014] It can be specified that the light conductor, when the lighting equipment is installed in the motor vehicle, has an extension dimension in the lateral direction of the vehicle, which is greater than the extension dimension of the light conductor in the longitudinal direction of the vehicle. Specifically, when the lighting equipment is installed in the motor vehicle, the vertical thickness of the section of the light conductor extending through the opening in the vehicle body is less than the vertical extension dimension of the light conductor. Furthermore, it can be specified that when the lighting equipment is installed in the motor vehicle, the vertical thickness of the section of the light conductor extending through the opening in the vehicle body is less than the vertical extension dimension of the incident surface of the light conductor. Therefore, the light conductor is relatively flat and can extend over a large portion of the vehicle width, for example, substantially across the entire rear panel.

[0015] It is feasible to construct the at least one light source as a light-emitting diode (LED). In particular, multiple light-emitting diodes can be arranged side by side along the lateral direction of the vehicle on the extension of the light conductor.

[0016] The lighting device may be specified to include a flat-light module disposed in front of the incident surface of a light conductor. The flat-light module is designed to direct light emitted from the at least one light source onto the incident surface of the light conductor. Here, the flat-light module may have a planar light conductor and at least one scattering film or diffuser disposed between the planar light conductor and the incident surface of the light conductor. In particular, the flat-light module also has a reflective film or diffuser disposed on the side of the planar light conductor of the flat-light module opposite to the incident surface of the light conductor. Such a flat-light module can very efficiently and uniformly illuminate the incident surface of the light conductor.

[0017] Alternatively, the lighting device may be specified to include a reflector designed to direct light emitted from the at least one light source onto the incident surface of the light conductor. In particular, the lighting device may include a scattering film or diffuser disposed between the reflector and the incident surface of the light conductor. This configuration can also uniformly illuminate the incident surface of the light conductor.

[0018] Alternatively, the lighting device may be designed to direct light emitted from the at least one light source onto the incident surface of the light conductor, or onto the incident surface of the light conductor after passing through at least one lens included in the lighting device, preferably at least one Fresnel lens included in the lighting device. This configuration also allows for uniform illumination of the incident surface of the light conductor.

[0019] It is feasible to have a structured portion on at least one surface of the optical conductor, particularly the incident and / or exiting surface, especially an optical device for deflecting light, such as a pincushion optics, cylindrical optics, or prism optics, or a structure for scattering light, such as an etching structure, a corrosion structure, or a laser structure. This structured portion enables appropriate light scattering of light emitted from the exiting surface, particularly achieving broadly scattered light radiation emitted from the exiting surface. Attached Figure Description

[0020] The invention will now be described in detail with reference to the accompanying drawings. Herein:

[0021] Figure 1 A cross-section is shown of a first embodiment of the lighting device according to the invention in a state of being installed in a motor vehicle;

[0022] Figure 2 Showing according to Figure 1 A cross-section of the lighting equipment, showing different inclinations of the vehicle body surface arranged below the lighting equipment;

[0023] Figure 3 Showing according to Figure 1 Detailed diagram of the light conductor of the lighting equipment;

[0024] Figure 4 A cross-section of a second embodiment of the lighting device according to the invention is shown in a state of being installed in a motor vehicle, wherein different inclinations of the vehicle body surface arranged below the lighting device are shown.

[0025] Figure 5 A cross-section of a third embodiment of the lighting device according to the invention is shown in a state of being installed in a motor vehicle, wherein different inclinations of the vehicle body surface arranged below the lighting device are shown.

[0026] Figure 6 Showing according to Figure 5 A detailed diagram of the light conductor of a lighting device, showing the plotted beam of light;

[0027] Figure 7 A cross-section of a plotted beam of light is shown in a motor vehicle state, according to a fourth embodiment of the lighting device of the present invention, wherein different inclinations of the vehicle body surface arranged below the lighting device are shown.

[0028] Figure 8 A cross-section of a plotted beam of light is shown in a motor vehicle in the state of a fifth embodiment of the lighting device according to the invention, wherein different inclinations of the vehicle body surface arranged below the lighting device are shown.

[0029] Figure 9 A rear view of a portion of the rear region of a motor vehicle having a lighting device according to a sixth embodiment of the present invention is shown. Detailed Implementation

[0030] In the accompanying drawings, the same or functionally identical parts are given the same reference numerals.

[0031] The lighting device shown in the accompanying drawings includes a light conductor 1 that, when the lighting device is installed in a motor vehicle, partially extends through an opening 2 in the vehicle body 3 and extends outward from the opening 2 away from the vehicle body 2 (see Figure 1). Figure 1 The light conductor 1 has an incident surface 4 disposed inside the vehicle body 3 and an exit surface 5 disposed outside the vehicle body 3 for emitting light. Here, the exit surface 5 is disposed on the underside of the light conductor 1 in the attached figure.

[0032] The emission surface 5 can be arranged on another side surface of the light conductor 1, for example, on the upper side of the light conductor 1. In addition to the emission surface 5 arranged on the side surface, a second emission surface can also be provided at the narrow end side 23 of the light conductor 1, and the second emission surface is arranged on the side of the light conductor 1 away from the vehicle body 3 in the installed state.

[0033] In the illustrated embodiment, the light conductor 1 extends outward from the opening 2 along the longitudinal direction of the vehicle, away from the vehicle body 3. However, the light conductor 1 can also extend outward from the opening 2, either vertically or obliquely, away from the vehicle body 3. The direction in which the light conductor 1 extends away from the vehicle body 3 is related to the design or styling of the motor vehicle and the design or styling of the lighting equipment.

[0034] The light conductor 1 is relatively flat and can extend over most of the vehicle width, for example, essentially over the entire rear cover 6 (see [reference]). Figure 9 In particular, the extension dimension of the light conductor 1 in the lateral direction of the vehicle is greater than the extension dimension of the light conductor 1 in the longitudinal direction of the vehicle. The vertical thickness of the segment 7 of the light conductor 1 extending through the opening 2 of the vehicle body 3 when the lighting equipment is installed in the vehicle is also less than the extension dimension of the light conductor in the longitudinal direction of the vehicle (see...). Figure 1 Here, the incident surface 4, arranged inside the vehicle body 3, is positioned at the thickened section 8 of the light conductor 1, the thickness of which in the vertical direction is approximately twice that of the section 7 of the light conductor 1 extending through the opening 2 of the vehicle body 3.

[0035] The extension of the light conductor 1 through the opening 2 of the vehicle body 3 in the segment 7 gradually tapers vertically from the thickened segment 8. Alternatively, the extension of the light conductor 1 through the opening 2 of the vehicle body 3 in the segment 7 can have a constant thickness along its longitudinal extension in the longitudinal direction of the vehicle.

[0036] The lighting device includes at least one light source 9, which is constructed as a light-emitting diode (LED). In particular, multiple light sources 9 constructed as LEDs are provided, these light sources being positioned in the lateral direction of the vehicle or extending into... Figure 1 They are arranged side by side in the direction of the plane.

[0037] A so-called flat optical module 10 is disposed between the light source 9 and the incident surface 4 of the light conductor 1. The flat optical module 10 has a planar light conductor 11, into which light emitted from the light source 9 is coupled from below. The light incident on the planar light conductor 11 of the flat optical module 10... Figure 1The light conductor 11 extends from the center to the right towards the incident surface 4 of the light conductor 1, which passes through the opening 2 of the vehicle body 3. Two scattering films 12 or scattering sheets are arranged between the planar light conductor 11 and the incident surface 4; these are part of the flat optical module 10. Uniform illumination of the incident surface 4 of the light conductor 1 extending through the vehicle body 3 is achieved through the scattering films 12 or scattering sheets. The planar light conductor 11 of the flat optical module 10... Figure 1 A reflective film 13 or reflective sheet is arranged on the left or back side of the flat optical module 10, which is also part of the flat optical module 10. The reflective film 13 or reflective sheet is used to reflect the light from the back side of the flat optical module 10. Figure 1 The light emitted from the planar light conductor 11 from the center to the left is coupled back into the light conductor 11, thereby improving the illumination efficiency of the incident surface 4 of the light conductor 1 that extends through the vehicle body 3.

[0038] The optical conductor 1 may have a structured portion 14 not only at its incident surface 4 but also at its exit surface 5 or on another outer surface of its outer surface. The structured portion 14 may have optical devices that redirect light, such as pincushion optics, cylindrical optics, or prism optics. Alternatively, the structured portion 14 may have a structure that scatters light, such as an etched structure, a corrosion structure, or a laser structure. The structured portion enables appropriate light scattering of light emitted from the exit surface 5, particularly enabling broadly scattered light radiation emitted from the exit surface 5.

[0039] Lighting equipment Figure 4 The embodiment shown here has a reflector 15 instead of a flat optical module 10. Here, the lighting device includes a scattering film 22 or a scattering sheet arranged between the reflector 15 and the incident surface 4 of the light conductor 1. Light emitted from the at least one light source 9 is reflected by the reflector 15 through the scattering film 22 or the scattering sheet onto the incident surface 4 of the light conductor.

[0040] Alternatively, instead of the flat light module 10 and the reflector 15, the lighting device can be configured such that light emitted from the at least one light source 9 can propagate relatively directly in the direction toward the incident surface 4 of the light conductor 1. Here, at least one lens (not shown), especially at least one Fresnel lens, can be provided between the at least one light source 9 and the incident surface 4 of the light conductor 1 to achieve relatively direct illumination of the incident surface 4.

[0041] The lighting device is designed such that, when installed in a motor vehicle, light 16 generated by the light source 9 is at least partially incident on the incident surface 4 of the light conductor 1, and light 16 passing through the incident surface 4 and incident on the light conductor 1 is at least partially emitted from the exit surface 5. Here, the lighting device is designed such that the light 16 emitted from the exit surface 5 strikes the vehicle body surface 17 and is at least partially reflected by the vehicle body surface 17, causing the light to move away from the vehicle, particularly rearward away from the vehicle (see [reference]). Figure 1 , Figure 6 and Figure 9 This kind of light that is reflected backward can, for example, function as a taillight.

[0042] Here, the embodiment of the vehicle body surface 17 affects the visibility of the rearwardly reflected light 16. When the vehicle body surface 17 is smooth, the angle between the vehicle body surface and the emitting surface 5 is decisive for visibility and light reflection at the vehicle body surface 17. Therefore, in Figure 2 and Figures 4 to 8 The image shows three different body surfaces 17, 17', and 17', which are distinguished by their different inclinations relative to the exit surface 5.

[0043] Advantageously, the light emitted from the light conductor 1 is broadly scattered, ensuring that the light beam always strikes the vehicle body surfaces 17, 17', 17" at a suitable angle so that it is reflected and visible to the observer. Furthermore, it can be specified that the vehicle body surfaces 17, 17', 17" are coated with a film having a structure or texture that advantageously provides diffuse light reflection. Furthermore, it can be specified that the paint on the vehicle body in these areas is applied using a matte structural paint, which advantageously provides diffuse light reflection. Additionally, additional components (not shown) serving as reflective devices, such as transparent sheets with optical structures, can be provided on the vehicle body surfaces 17, 17', 17" . Advantageously, such transparent structural sheets can be mounted on any vehicle body with any set color. Instead of transparent sheets, opaque sheets with reflective and diffusely scattering surfaces are also feasible.

[0044] according to Figure 5 and Figure 6 Implementation methods and basis Figure 1 The difference in the implementation is that the light conductor 1 has a turning surface 18, which causes light 16 moving through the light conductor 1 to be turned toward the exiting surface 5 by total internal reflection. The turning surface 18 is arranged on the side of the light conductor 1 away from the exiting surface 5, or on the upper side of the light conductor 1 when the lighting equipment is installed in the motor vehicle.

[0045] The steering surface 18 is appropriately inclined, wherein the normal on the steering surface, when the lighting equipment is installed in the vehicle, forms an angle between 20° and 50° with the vertical direction. Here, the steering surface 18 begins at the end of the thickened section 8 of the light conductor 1 and extends a distance through the opening 2 of the vehicle body. The steering surface 18 is constructed at the section 7 extending through the opening 2 of the vehicle body 3. The longitudinal extension dimension of the section 7 extending through the opening 2 of the vehicle body 3 is approximately three to four times the longitudinal extension dimension of the steering surface 18.

[0046] according to Figure 7 Implementation methods and basis Figure 6 The difference in the implementation method is that a reflective film 19 and a reflective housing component 20 are arranged on the outer side of the turning surface 18 so as to reflect the light emitted from the turning surface 18 back into the light conductor 1. It can be specified that only one reflective film 19 or only one reflective housing component 20 is provided.

[0047] according to Figure 8 Implementation methods and basis Figure 6 The difference in the implementation is that the light conductor 1 has a plurality of strip prisms 21 extending along the lateral direction of the vehicle on the extension of the light conductor 1. Here, the prisms 21 are adjacent to each other in the longitudinal direction of the vehicle, wherein the first prism of the prisms 21 is adjacent to the steering surface 18. By using a plurality of prisms 21 near the steering surface 18, the surface that helps to deflect the light 16 can be increased, so that more light 16 is deflected toward the direction of the emission surface 5.

[0048] List of reference numerals

[0049] 1 Photoconductor

[0050] 2. Openings in the vehicle body

[0051] 3 body

[0052] 4. Incident surface of the optical conductor

[0053] 5. The exit surface of the optical conductor

[0054] 6 Rear Cover

[0055] 7. The extension of the optical conductor through the opening in the vehicle body.

[0056] 8. Thickened section of the photoconductor

[0057] 9 light sources

[0058] 10 flat optical modules

[0059] 11. Planar optical conductors of flat optical modules

[0060] Scattering film of 12 flat optical modules

[0061] 13. Reflective film of flat optical module

[0062] 14. Structural parts on the outer surface of the optical conductor

[0063] 15 reflectors

[0064] 16. Light emitted from a light source

[0065] 17", 17', 17" body surface

[0066] 18 steering surfaces

[0067] 19. Reflective film on the outer side of the steering surface

[0068] 20 Reflective housing component behind the steering surface

[0069] 21. Prisms near the turning surface

[0070] 22. Membrane between the reflector and the incident surface of the light conductor

[0071] 23 Narrow end face of the optical conductor

Claims

1. A lighting device for a motor vehicle, the lighting device comprising at least one light source (9), the lighting device being designed such that, in a state where the lighting device is installed in the motor vehicle, light (16) generated by the light source (9) is at least partially emitted from the lighting device, the emitted light (16) striking a body surface (17, 17', 17") of the motor vehicle or striking a reflector disposed on the body surface of the motor vehicle, and the light (16) being at least partially reflected by the body surface (17, 17', 17") or the reflector, such that the light moves away from the motor vehicle, characterized in that, The lighting device includes a light conductor (1) having an incident surface (4) for light (16) generated by the light source (9) and at least one exiting surface (5) for light (16) incident through the incident surface (4) into the light conductor (1). The light conductor (1), when the lighting device is installed in the motor vehicle, extends at least partially through an opening (2) in the body (3) of the motor vehicle and extends outward from the opening (2) away from the body (3). The at least one exiting surface (5) is arranged outside the body (3) such that light (16) emitted from the light conductor (1) directly reaches the external space of the motor vehicle.

2. The lighting device according to claim 1, characterized in that, The at least one emitting surface (5) or one of the emitting surfaces (5) is arranged on the side and / or front side with respect to the direction in which the light conductor (1) extends through the opening (2) of the vehicle body (3). In particular, the at least one emitting surface (5) or one of the emitting surfaces (5) is the lower surface of the light conductor (1) when the lighting device is installed in the motor vehicle, and the light (16) is emitted downward from the lower surface during the operation of the lighting device.

3. The lighting device according to any one of claims 1 or 2, characterized in that, The optical conductor (1) has a turning surface (18) designed to turn light (16) moving through the optical conductor (1) in particular toward the exiting surface (5) by total internal reflection, especially toward the lateral, preferably lower exiting surface (5).

4. The lighting device according to claim 3, characterized in that, The steering surface (18) is arranged on the side of the light conductor (1) away from the emission surface (5), and in particular, the steering surface (18) is arranged on the upper side of the light conductor (1) when the lighting equipment is installed in the motor vehicle.

5. The lighting device according to any one of claims 3 or 4, characterized in that, The normal on the steering surface (18) forms an angle with the vertical direction that is not equal to 0° when the lighting equipment is installed in the motor vehicle. In particular, the normal on the steering surface (18) forms an angle with the vertical direction that is between 10° and 60°, preferably between 20° and 50°.

6. The lighting device according to any one of claims 3 to 5, characterized in that, The light conductor (1) has at least one prism (21), and in particular multiple prisms (21), which are arranged in or adjacent to the turning surface (18) and help to turn the light (16) moving through the light conductor (1) toward the exiting surface (5).

7. The lighting device according to any one of claims 3 to 6, characterized in that, A reflective film (19) and / or a reflective housing component (20) are arranged on the outer side of the turning surface (18) so that the light (16) emitted from the turning surface (18) is reflected back into the light conductor (1).

8. The lighting device according to any one of claims 1 to 7, characterized in that, The light conductor (1) has an extension dimension in the lateral direction of the vehicle when the lighting equipment is installed in the motor vehicle. The extension dimension is greater than the extension dimension of the light conductor (1) in the longitudinal direction of the vehicle. In particular, when the lighting equipment is installed in the motor vehicle, the thickness of the section (7) of the extension of the light conductor (1) passing through the opening (2) of the body (3) of the motor vehicle in the vertical direction is less than the extension dimension of the light conductor (1) in the longitudinal direction of the vehicle.

9. The lighting device according to any one of claims 1 to 8, characterized in that, When the lighting device is installed in the motor vehicle, the thickness of the section (7) of the light conductor (1) extending through the opening (2) of the body (3) of the motor vehicle in the vertical direction is less than the vertical extension dimension of the incident surface (4) of the light conductor (1).

10. The lighting device according to any one of claims 1 to 9, characterized in that, The at least one light source (9) is constructed as a light-emitting diode.

11. The lighting device according to any one of claims 1 to 10, characterized in that, The lighting device includes a flat light module (10) arranged in front of the incident surface (4) of the light conductor (1), and the flat light module (10) is designed to direct light (16) emitted from the at least one light source (9) onto the incident surface (4) of the light conductor (1).

12. The lighting device according to claim 11, characterized in that, The flat optical module (10) has a planar optical conductor (11) and at least one scattering film (12) or scattering sheet disposed between the planar optical conductor (11) and the incident surface (4) of the optical conductor (1). In particular, the flat optical module (10) also has a reflective film (13) or reflective sheet disposed on the side of the planar optical conductor (11) of the flat optical module (10) away from the incident surface (4) of the optical conductor (1).

13. The lighting device according to any one of claims 1 to 10, characterized in that, The lighting device includes a reflector (15) designed to direct light (16) emitted from the at least one light source (9) onto the incident surface (4) of the light conductor (1). In particular, the lighting device includes a scattering film (22) or a scattering sheet disposed between the reflector (15) and the incident surface (4) of the light conductor (1).

14. The lighting device according to any one of claims 1 to 10, characterized in that, The lighting device is designed to allow light (16) emitted from the at least one light source (9) to strike directly onto the incident surface (4) of the light conductor (1) or to strike the incident surface (4) of the light conductor (1) after passing through at least one lens included in the lighting device, preferably at least one Fresnel lens included in the lighting device.

15. The lighting device according to any one of claims 1 to 14, characterized in that, At least one surface of the optical conductor (1), particularly the incident surface (4) and / or the exit surface (5), is provided with a structured portion (14), particularly with an optical device for directing light, such as a pincushion optical device, a cylindrical optical device, or a prism optical device, or with a structure for scattering light, such as an etching structure, an corrosion structure, or a laser structure.

Images