Illumination device for a motor vehicle headlamp
By using alternating rectangular or square surface elements to form a stepped structure in the headlights of motor vehicles, the problems of insufficient and uneven light intensity in the prior art are solved, and a highly efficient and uniform light radiation effect is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ZKW GRP GMBH
- Filing Date
- 2021-10-18
- Publication Date
- 2026-07-10
AI Technical Summary
Existing motor vehicle headlights suffer from insufficient and uneven light intensity when radiating light in multiple directions.
The optical device is coupled with first and second light conductors respectively, and the light output surface is formed by alternating rectangular or square surface elements to ensure efficient light radiation in different directions. The light is deflected in the light conductor by deflecting elements to achieve uniform illumination.
It achieves efficient and uniform light radiation in different directions, improving the light intensity and lighting effect of the lighting device.
Smart Images
Figure CN116472425B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a lighting device for motor vehicle headlights, comprising:
[0002] - A first optical conductor, which is configured to conduct light from a light source and radiate light from the light source along a first direction;
[0003] - A second light conductor, which is configured to conduct light from the light source and radiate light from the light source along a second direction;
[0004] - An optical device configured to radiate light from a first optical conductor and a second optical conductor into a traffic space as an optical light-emitting function, wherein the optical device has a first optical coupling inlet, a first optical coupling outlet associated with the first optical coupling inlet, a second optical coupling inlet, and a second optical coupling outlet associated with the second optical coupling inlet.
[0005] Furthermore, the present invention relates to a motor vehicle headlight, which includes a lighting device. Background Technology
[0006] Illuminating devices for motor vehicle headlights are known in the prior art, wherein two light conductors supply light to an optical device to produce a light-emitting function. If light is to be radiated from the optical device in at least two directions, diffuse radiation is typically generated through the optical coupler surface of the optical device. However, this results in low light intensity and insufficient light radiation in at least one of the two directions. Summary of the Invention
[0007] The objective of this invention is to mitigate or eliminate the drawbacks of the prior art. Therefore, the invention specifically aims to create a lighting device that improves the radiation of light.
[0008] This task is solved by a lighting device according to one aspect of the invention. The invention has several preferred embodiments.
[0009] According to the present invention, the first optical conductor is arranged relative to the first optical coupling surface such that light from the first optical conductor can be coupled into the optical device via the first optical coupling surface, wherein the light coupled into the optical device passes through the optical device and can be coupled out via the first optical coupling surface; and the second optical conductor is arranged relative to the second optical coupling surface such that light from the second optical conductor can be coupled into the optical device via the second optical coupling surface, wherein the light coupled into the optical device passes through the optical device and can be coupled out via the second optical coupling surface.
[0010] The first optical coupler output surface is formed by a large number of first surface elements, and the second optical coupler output surface is formed by a large number of second surface elements.
[0011] The first and second face elements are arranged alternately relative to each other such that they form a substantially stepped structure, wherein the first face element and the following second face element respectively form stepped portions, wherein the first face element and the following second face element are sandwiched at an angle of 45° to 135°, preferably substantially 90°.
[0012] This results in the following advantages: two differently oriented optical coupling surfaces radiate light in two different directions, wherein the optical coupling surfaces are supplied with light by means of corresponding optical conductors. This allows for particularly efficient illumination in different second directions. The first direction, corresponding to the light radiation direction of the first optical conductor, is preferably parallel to the longitudinal direction of the vehicle in which lighting devices can be installed. The second direction, corresponding to the light radiation direction of the second optical conductor, is preferably orthogonal to the longitudinal direction of the vehicle in which lighting devices can be installed. The first and second optical coupling surfaces preferably together form a continuous, particularly closed, total coupling surface, which, for example, follows an imaginary curved plane. Light is preferably propagated within the optical conductor by total radiation at the boundary surface of the optical conductor. Within the optical conductor, deflection elements are preferably arranged at the coupling points, the deflection elements configured to deflect the light so that the light is coupled out of the optical conductor. The optical conductor is, for example, designed as a rod-shaped optical conductor having a departure side and coupling elements positioned opposite the departure side.
[0013] The structure can be configured as a stepped shape to follow a curved track. The curved track or track curve is an imaginary construction and can have a starting region and an ending region. The starting region of the track curve can include an imaginary surface, which can be substantially orthogonal to a first direction and parallel to a second direction. The ending region of the track curve can also include an imaginary surface, which can be substantially parallel to the first direction and orthogonal to the second direction. The optical device can extend along the curved track or track curve.
[0014] It can be configured such that the first optical coupler inlet surface is substantially parallel to the first optical coupler outlet surface and the second optical coupler inlet surface is substantially parallel to the second optical coupler outlet surface.
[0015] The first and second surface elements can be configured to be substantially rectangular, preferably square. The edge length of the first and / or second surface elements can be from 0.5 mm to 10 mm, preferably from 1 mm to 5 mm. The dimensions of the first and second surface elements, especially the length and width, are preferably the same. The first and second surface elements are preferably configured to scatter or diffuse light upon coupling. This achieves uniform light radiation. The first and second surface elements are preferably configured so that the light beam remains substantially unchanged in its orientation upon coupling. The angle at which light can be coupled through the first and second optical coupling surfaces can be determined, in particular, by the position of the first or second optical conductor relative to the first or second optical coupling surface.
[0016] The surface vectors of the first surface element and the second surface element can be configured such that they lie in the same plane. Specifically, the surface vector of the first surface element is arranged at its center. Similarly, the surface vector of the second surface element is arranged at its center.
[0017] The first and second surface elements can be arranged to alternately be adjacent to each other. The first and second surface elements are preferably in contact at their edges or at the edges of the respective surface elements, thereby achieving a closed stepped arrangement of the first and second surface elements.
[0018] The first and second optocoupler exit surfaces can be configured to have at least two, preferably multiple, stepped rows, which are correspondingly formed by first and second surface elements arranged in a stepped manner relative to each other. The stepped rows are particularly formed by multiple first and second surface elements, wherein the first and second surface elements are preferably arranged alternately in the stepped rows. The first stepped row is preferably arranged vertically above or below the second stepped row. The stepped rows may have a longitudinal direction along which the first and second surface elements are arranged relative to each other, wherein the second stepped row is offset relative to the first stepped row in a direction extending transversely to the longitudinal direction.
[0019] The at least two, preferably multiple, stepped sections can be arranged overlapping each other along a third direction, which is orthogonal to the orientation of the first and second directions. The third direction is particularly orthogonal to the plane formed by the direction vectors of the first and second directions.
[0020] It can be configured such that two overlapping stepped sections are directly adjacent to each other in a third direction.
[0021] The at least two, preferably multiple, stepped rows can be arranged offset relative to each other along a first direction and / or a second direction around the first and / or second face elements, such that the first and second face elements construct a cubic structure in at least two stepped rows. In other words, the first stepped row can be arranged, particularly vertically and horizontally, relative to the second stepped row, wherein the horizontal and vertical offsets preferably have a distance corresponding to the length or width of the first or second face element. The light-removing surface can be formed substantially of a large number of cubic elements, wherein the individual cubes are arranged, particularly in a matrix form, in a uniform grid relative to each other.
[0022] It can be configured such that the first direction is orthogonal to the orientation of the first surface element. In other words, the light radiation direction of the first light conductor is preferably orthogonal to the first surface element. This results in the advantage of minimizing unwanted light scattering during the boundary transition.
[0023] The second direction can be configured to be orthogonal to the orientation of the second surface element. In other words, the light radiation direction of the second light conductor is preferably orthogonal to the second surface element. This results in the advantage of minimizing unwanted light scattering during the boundary transition.
[0024] It can be set such that the first direction is orthogonal to the first optical coupling surface. This minimizes light scattering during coupling.
[0025] The second direction can be set to be orthogonal to the second optical coupling surface. This minimizes light scattering during coupling.
[0026] According to the present invention, a motor vehicle headlight is provided, wherein the motor vehicle headlight includes a lighting device.
[0027] Within the scope of this description, the terms “top,” “bottom,” “horizontal,” and “vertical” should be understood as descriptions of the orientation of the lighting device when it is positioned in its normal use position after installation in a motor vehicle headlight. Attached Figure Description
[0028] The invention will be further explained below with reference to preferred embodiments; however, the invention should not be limited to these embodiments. In the accompanying drawings:
[0029] Figure 1 Detailed views of the lighting device according to the present invention are shown;
[0030] Figure 2 Showing according to Figure 1 Further detailed views of the lighting fixture; and
[0031] Figure 3 Detailed views of the first and second optical couplers of the lighting device are shown.
[0032] For simplicity, non-critical elements are not shown in the accompanying drawings. Detailed Implementation
[0033] Figure 1 and 2 A detailed view of a lighting device 1 according to the invention is shown, comprising a first light conductor 2 configured to conduct light from a light source (not shown) and radiate the light from the light source along a first direction (x); and a second light conductor 3 configured to conduct light from a light source (not shown) and radiate the light from the light source along a second direction (y).
[0034] The optical device 4 is configured to radiate light from the first optical conductor 2 and the second optical conductor 3 into the traffic space as an optical light-emitting function. The optical device 4 has a first optical coupling inlet surface 5a, a first optical coupling outlet surface 5b corresponding to the first optical coupling inlet surface 5a, a second optical coupling inlet surface 6a, and a second optical coupling outlet surface 6b corresponding to the second optical coupling inlet surface 6a.
[0035] The first optical conductor 2 is arranged relative to the first optical coupling inlet surface 5a such that the light from the first optical conductor 2 can be coupled into the optical device 4 via the first optical coupling inlet surface 5a, wherein the light coupled in through the first optical conductor 2 passes through the optical device 4 and can be coupled out via the first optical coupling outlet surface 5b.
[0036] The second optical conductor 3 is arranged relative to the second optical coupling inlet surface 5a such that light from the second optical conductor 3 can be coupled into the optical device 4 via the second optical coupling inlet surface 6a, wherein the light coupled through the second optical conductor 3 passes through the optical device 4 and can be coupled out via the second optical coupling outlet surface 6b. The first optical coupling inlet surface 5a is oriented substantially parallel to the first optical coupling outlet surface 5b, and the second optical coupling inlet surface 6a is oriented substantially parallel to the second optical coupling outlet surface 6b.
[0037] Figure 3 Detailed views of the first optical coupler surface 5b and the second optical coupler surface 6b of the lighting device 1 are shown. The first optical coupler surface 5b is formed by a plurality of first surface elements 7, and the second optical coupler surface 6b is formed by a plurality of second surface elements 8.
[0038] The first surface element 7 and the second surface element 8 are arranged alternately relative to each other, such that they form a substantially stepped structure. The first surface element 7 and the following second surface element 8 correspondingly form stepped portions, wherein the first surface element 7 and the following second surface element 8 enclose each other at an angle of 45° to 135°, preferably substantially 90°. The first surface element 7 and the second surface element 8 are substantially rectangular, preferably square. In particular, the first surface element 7 and the second surface element 8 are alternately adjacent to each other.
[0039] The stepped structure or total optical coupler surface formed by the first optical coupler exit surface 5b and the second optical coupler exit surface 6b can follow a curved track (see...). Figure 2 ).
[0040] The surface vector of the first surface element 7 and the surface vector of the second surface element 8 are preferably in the same plane.
[0041] The first optical coupler surface 5b and the second optical coupler surface 6b have at least two, preferably multiple, stepped rows, which are formed by a first surface element 7 and a second surface element 8 arranged in a stepped shape relative to each other. Figure 3 The embodiment shown has six stepped sections.
[0042] The at least two, preferably multiple, stepped sections are arranged overlappingly along a third direction, which is orthogonal to the orientation of the first and second directions. The third direction is substantially vertical. Two overlapping stepped sections are directly adjacent to each other in the third direction.
[0043] The at least two, preferably multiple stepped rows are arranged along a first direction and / or a second direction around the first face element 7 or the second face element 8 in such an offset relative to each other that the first face element and the second face element form a cubic structure in the at least two stepped rows.
[0044] The first direction (x) is particularly orthogonal to the orientation of the first surface element 7.
[0045] The second direction (y) is particularly orthogonal to the orientation of the second surface element 8.
[0046] The first direction (x) is specifically orthogonal to the first optical coupler inlet surface 5a.
[0047] The second direction (y) is specifically orthogonal to the orientation of the second optical coupler inlet surface 6a.
[0048] When the lighting device 1 is installed in a motor vehicle, the first direction can be oriented parallel to the longitudinal direction of the motor vehicle. This first direction corresponds to the direction of light radiation, which is radiated by the motor vehicle headlights installed in the vehicle. The second direction can be oriented orthogonally to the longitudinal direction of the motor vehicle.
Claims
1. A lighting device (1) for a motor vehicle headlight, comprising: - A first light conductor (2), which is configured to conduct light from a light source and radiate light from a light source along a first direction (x); - A second light conductor (3), which is configured to conduct light from the light source and radiate light from the light source along a second direction (y); - An optical device (4) configured to radiate light from the first optical conductor (2) and the second optical conductor (3) into a traffic space as an optical light-emitting function, wherein the optical device (4) has a first optical coupling inlet surface (5a), a first optical coupling outlet surface (5b) corresponding to the first optical coupling inlet surface (5a), a second optical coupling inlet surface (6a), and a second optical coupling outlet surface (6b) corresponding to the second optical coupling inlet surface (6a). Its features are, The first optical conductor (2) is arranged relative to the first optical coupling surface (5a) such that light from the first optical conductor (2) can be coupled into the optical device (4) via the first optical coupling surface (5a), wherein the light coupled through the first optical conductor (2) passes through the optical device (4) and can be coupled out via the first optical coupling surface (5b), wherein the second optical conductor (3) is arranged relative to the second optical coupling surface (6a) such that light from the second optical conductor (3) can be coupled into the optical device (4) via the second optical coupling surface (6a), wherein the light coupled through the second optical conductor (3) passes through the optical device (4) and can be coupled out via the second optical coupling surface (6b). The first optical coupler output surface (5b) is formed by a large number of first surface elements (7), and the second optical coupler output surface (6b) is formed by a large number of second surface elements (8). The first surface element (7) and the second surface element (8) are arranged alternately relative to each other such that they form a substantially stepped structure, wherein the first surface element (7) and the following second surface element (8) respectively form stepped portions, wherein the first surface element (7) and the following second surface element (8) are sandwiched at an angle of 45° to 135°.
2. The lighting device (1) according to claim 1, wherein, The first surface element (7) and the next surface element (8) are sandwiched at an angle of approximately 90°.
3. The lighting device (1) according to claim 1, wherein, The stepped structure follows the curved track.
4. The lighting device (1) according to any one of claims 1 to 3, wherein, The first optical coupler inlet (5a) is oriented substantially parallel to the first optical coupler outlet (5b), and the second optical coupler inlet (6a) is oriented substantially parallel to the second optical coupler outlet (6b).
5. The lighting device (1) according to any one of claims 1 to 3, wherein, The first surface element (7) and the second surface element (8) are substantially rectangular.
6. The lighting device (1) according to any one of claims 1 to 3, wherein, The first face element (7) and the second face element (8) are basically square.
7. The lighting device (1) according to any one of claims 1 to 3, wherein, The surface vector of the first surface element (7) and the surface vector of the second surface element (8) are in the same plane.
8. The lighting device (1) according to any one of claims 1 to 3, wherein, The first face element (7) and the second face element (8) are alternately adjacent to each other.
9. The lighting device (1) according to any one of claims 1 to 3, wherein, The first optical coupler outlet (5b) and the second optical coupler outlet (6b) have at least two stepped sections, which are respectively formed by a first surface element (7) and a second surface element (8) arranged in a stepped manner relative to each other.
10. The lighting device (1) according to any one of claims 1 to 3, wherein, The first optical coupler outlet (5b) and the second optical coupler outlet (6b) have multiple stepped sections, which are formed by first surface elements (7) and second surface elements (8) arranged in a stepped manner relative to each other.
11. The lighting device (1) according to claim 9, wherein, The at least two stepped sections are arranged overlapping each other along a third direction, which is orthogonal to the first direction (x) and the second direction (y).
12. The lighting device (1) according to claim 10, wherein, The plurality of stepped sections are arranged overlapping each other along a third direction, which is orthogonal to the first direction (x) and the second direction (y).
13. The lighting device (1) according to claim 11, wherein, Two stepped sections arranged in an overlapping manner are directly adjacent to each other in the third direction.
14. The lighting device (1) according to claim 9, wherein, The at least two stepped sections are arranged along the first direction (x) and / or the second direction (y) with a first face element (7) and / or a second face element (8) offset relative to each other, such that the first face element (7) and the second face element (8) in the at least two stepped sections form a cubic structure.
15. The lighting device (1) according to claim 10, wherein, The plurality of stepped sections are arranged along the first direction (x) and / or the second direction (y) with a first face element (7) and / or a second face element (8) offset relative to each other, such that the first face element (7) and the second face element (8) in the plurality of stepped sections form a cubic structure.
16. The lighting device (1) according to any one of claims 1 to 3, wherein, The first direction (x) is orthogonal to the orientation of the first surface element (7).
17. The lighting device (1) according to any one of claims 1 to 3, wherein, The second direction (y) is orthogonal to the orientation of the second surface element (8).
18. The lighting device (1) according to any one of claims 1 to 3, wherein, The first direction (x) is orthogonal to the orientation of the first optical coupler inlet surface (5a).
19. The lighting device (1) according to any one of claims 1 to 3, wherein, The second direction (y) is orthogonal to the orientation of the second optical coupler inlet surface (6a).
20. A motor vehicle headlight, comprising a lighting device (1) according to any one of claims 1 to 19.