Optical structure for achieving uniform lighting by reflection of light

Abstract

The utility model relates to the technical field of car light, specifically disclose a reflection light collection realizes the optical structure of even lighting, it includes: PCB board, its electric connection has a plurality of second direction arrangement's LED light source, and thick wall spare has opposite light inlet end and light outlet end, be provided with light collection structure on the light inlet end, still be provided with total reflection structure on thick wall spare between light collection structure and light outlet end optical path, light collection structure is close to the LED light source setting, it is used for receiving the light of LED light source emission and reflects it to total reflection structure, total reflection structure is used for receiving the reflection light ray again reflection to the light outlet end of thick wall spare and emits, forms the effect of even lighting. The utility model's this optical structure solved the problem that LED signal lamp does not even light and the structure design is simple, occupies small, can satisfy the various complex modeling design demand of lamps and lanterns.

Description

Technical Field

[0001] This utility model relates to the field of automotive lighting technology, specifically to an optical structure that reflects and collects light to achieve uniform illumination. Background Technology

[0002] LED signal lights primarily include front position lights, rear position lights, front turn signals, rear turn signals, daytime running lights, brake lights, high-mounted brake lights, reversing lights, rear fog lights, and ADS lights. Currently, with the increasing diversity (complexity) and lightweight design trends of LED signal lights, the design space for these lights is constantly being compressed. This leads to higher space requirements, and the increasingly narrow and confined internal space of the lights also puts pressure on the uniform illumination of LED signal lights. Therefore, current LED signal lights generally suffer from bright spots (uneven illumination) after being lit, which create a glaring effect, seriously affecting the normal driving of oncoming vehicles and posing a significant safety hazard. Utility Model Content

[0003] The purpose of this invention is to design an optical structure that reflects and collects light to achieve uniform illumination, thereby solving the problem of uneven illumination in current LED signal lights. Furthermore, this optical structure is simple in design, occupies little space, can meet the design requirements of various complex shapes of lamps, and achieves uniform illumination.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0005] This invention designs an optical structure for reflecting and collecting light to achieve uniform illumination, the structure including the following configuration:

[0006] The PCB board has several LED light sources arranged in a second direction that are electrically connected to it;

[0007] The component also includes a thick-walled member having an incident light end and an exit light end. The incident light end is provided with a light-collecting structure, and the thick-walled member between the light-collecting structure and the exit light end optical path is also provided with a total internal reflection structure. The light-collecting structure is located close to the LED light source and is used to receive the light emitted by the LED light source and reflect it to the total internal reflection structure. The total internal reflection structure is used to reflect the received reflected light back to the exit light end of the thick-walled member and emit it out, forming a uniform lighting effect.

[0008] Specifically, the gap between the LED light source and the thick-walled component can be set to 0.5 to 1.5 mm.

[0009] Furthermore, an optical structure for achieving uniform illumination through reflection and light collection is provided: the structure further includes a decorative ring, which is disposed above the light-emitting end of the thick-walled member, and the light emitted from the light-emitting end is then emitted through the decorative ring to form a uniform illumination effect.

[0010] Furthermore, an optical structure for achieving uniform illumination through light reflection and collection: the decorative ring consists of a light-transmitting portion and a light-shielding portion formed around the light-transmitting portion, the light-transmitting portion being positioned corresponding to the light-emitting end of the thick-walled member.

[0011] Furthermore, an optical structure for achieving uniform illumination through light reflection and collection is provided: the light-transmitting part is also provided with a diffusion pattern, which facilitates further diffusion of light and improves the uniformity of illumination.

[0012] Furthermore, an optical structure for achieving uniform illumination through light reflection and collection is provided: the light-collecting structure is configured as a total internal reflection planar structure or a parabolic structure; the total internal reflection structure is configured as a planar structure. Preferably, the light-collecting structure is configured as a parabolic structure.

[0013] Furthermore, an optical structure for achieving uniform illumination through reflective light collection is provided: the light-collecting structure undergoes surface treatment, and a diffusion pattern can be formed on the light-collecting structure. Specifically, aluminum plating (surface treatment) can be applied to the surface of the light-collecting structure, which can further improve the efficiency of the light-collecting structure. Forming a diffusion pattern on the light-collecting structure facilitates light diffusion and can further improve the uniformity of illumination.

[0014] Furthermore, an optical structure for achieving uniform illumination through light reflection and collection is provided: a diffusion structure is provided on the light-emitting end of the thick-walled component, which facilitates further diffusion of light and improves illumination uniformity.

[0015] Furthermore, an optical structure for achieving uniform illumination through light reflection and collection is provided: a pre-diffusion structure is also provided on a thick-walled component between the total reflection structure and the diffusion structure optical path; the total reflection structure reflects the light to the pre-diffusion structure for diffusion, and the diffused light is then conducted by the thick-walled component to the diffusion structure for secondary diffusion.

[0016] Furthermore, an optical structure for achieving uniform illumination through reflection and light collection: the thick-walled member has a notch in the thickness direction (first direction), and the pre-diffusion structure is disposed on two sides opposite to the notch.

[0017] Furthermore, an optical structure for achieving uniform illumination through reflected light collection is provided: the angle α between the PCB board and the light output axis (third direction) is set to 90±40°, which is equivalent to the angle γ between the PCB board and the horizontal plane being 0±40°; the angle β between the thick-walled component and the light output axis is set to 0±20°.

[0018] Preferably, the angle α between the PCB board and the light output axis (third direction) is set to 90° (that is, the angle γ between the PCB board and the horizontal plane is 0°, that is, the PCB board is set horizontally).

[0019] Specifically, in this utility model, the first, second, and third directions are three mutually perpendicular directions in three-dimensional space (similar to a three-dimensional coordinate system). They are only used to facilitate the description of the scheme of this application and are not intended to limit the orientation of this application.

[0020] The beneficial effects of this utility model are:

[0021] This invention presents an optical structure for achieving uniform illumination through reflection and light collection. By incorporating a light-collecting structure, a total reflection structure, a pre-diffusion structure, and a diffusion structure within a thick-walled component, the light emitted by the LED light source undergoes multiple reflections and diffusions (refractions) to become uniform, achieving a uniform light output effect. This solves the problem of uneven illumination in LED signal lights. Furthermore, surface treatment of the light-collecting structure improves light-collecting efficiency, meets the requirements of insufficient energy, and resolves the problem of substandard light distribution caused by insufficient energy.

[0022] The optical structure designed in this invention, which reflects light to achieve uniform illumination, is simple in structure, requires no additional condenser structure, occupies little space, and can meet the design requirements of various complex lamp shapes. At the same time, it can achieve uniform illumination. Moreover, in this structural design, the PCB board is set horizontally, which allows multiple functions to share a flat PCB board, reducing the use of PCB boards and lowering electronic costs. It can be applied to complex shapes, meet the design requirements of various lamp shapes, and improve the freedom of shape design.

[0023] This invention features an optical structure that achieves uniform illumination through reflection and light collection. The light emitted from the LED light source undergoes light collection, total internal reflection, diffusion, and re-diffusion, resulting in more uniform light output. Simultaneously, by positioning the LED light source away from the light emission point, it further avoids the bright spot problem caused by direct LED illumination, thus improving the uniformity of illumination. This structural design of the invention meets the aesthetic requirements of the illuminated state, enhancing the product's competitiveness. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1A schematic diagram of the optical structure designed for Example 1, which achieves uniform illumination through reflection and light collection;

[0026] Figure 2 for Figure 1 A schematic diagram of the structure from another perspective (second direction perspective).

[0027] The markings in the image are as follows:

[0028] 1-PCB board, 2-thick-walled component, 3-decorative ring, 4-LED light source, 21-light-collecting structure, 22-total reflection structure, 23-pre-diffusion structure, 24-diffusion structure, 25-notch, 31-light-transmitting part, 32-light-shielding part. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0030] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," "right," "top," and "bottom," etc., indicating orientation or positional relationships, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," etc., are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this utility model described herein can be implemented in orders other than those illustrated or described herein.

[0031] Example 1

[0032] like Figures 1-2 As shown, this embodiment 1 designs an optical structure for reflecting and collecting light to achieve uniform illumination. This structure includes the following configuration:

[0033] PCB board 1, which is electrically connected to several LED light sources 4 arranged in a second direction; specifically, the thickness and material of PCB board 1 are not limited, and are selected according to heat, structure and cost, and the LED light sources 4 are selected according to functional requirements and appropriate LED models are selected.

[0034] A thick-walled component 2 has a light-incident end and a light-exit end. A light-collecting structure 21 is provided on the light-incident end, and a light-exiting structure 24 is provided on the light-exit end. A total internal reflection structure 22 is provided on the thick-walled component 2 between the light-collecting structure 21 and the light-exiting structure 24. A pre-diffusion structure 23 is also provided on the thick-walled component 2 between the total internal reflection structure 22 and the light-exiting structure 24. The light-collecting structure 21 is a parabolic structure with a surface treatment (e.g., aluminum plating). The light-collecting structure 21 is positioned close to the LED light source 4. Specifically, the gap between the LED light source 4 and the thick-walled member 2 is set to 0.5-1.5mm. The light-receiving structure 21 is used to receive the light emitted by the LED light source 4 and reflect it. After reflection, the light is transmitted through the wall thickness of the thick-walled member 2 (transmitted along the first direction) to the total reflection structure 22. This total reflection structure 22 is set as a planar structure. The total reflection structure 22 is used to reflect the received light to the pre-diffusion structure 23 for diffusion. The diffused light is then transmitted by the thick-walled member 2 to the diffusion structure 24 for secondary diffusion.

[0035] And a decorative ring 3, which is disposed above the light-emitting end. The decorative ring 3 is composed of a light-transmitting part 31 and a light-shielding part 32 formed around the light-transmitting part 31. The light-transmitting part 31 is disposed corresponding to the light-emitting end (diffusion structure 24) of the thick-walled member 2. The light-transmitting part 31 is also provided with a diffusion pattern. The light diffused by the diffusion structure 24 continues to diffuse through the light-transmitting part 31 and is emitted, forming a uniform lighting effect.

[0036] In the above embodiment 1, the thick-walled component 2 has a notch 25 in the thickness direction (first direction). The pre-diffusion structure 23 is disposed on two opposite sides of the notch 25. The pre-diffusion structure 23 increases the number of light diffusions, which is beneficial for improving the uniformity of light emission. In the above embodiment 1, the angle α between the PCB board 1 and the light emission axis (Z-axis) is optimally set to 90° (at this time, the angle γ between the PCB board 1 and the horizontal direction is 0°). Figure 2 As shown, it can be adjusted by ±40°; in the above embodiment 1, the angle β between the thick-walled part 2 and the light output axis (third direction) is set to 0° for best results, but it can also be adjusted by ±20°.

[0037] In the above embodiment 1, the pre-diffusion structure 23 and the diffusion structure 24 are configured as diffusion patterns, and the R-angle of the diffusion patterns is set according to the optical requirements of different functions. The diffusion patterns provided on the light-transmitting part 31 can further improve the uniformity of light output.

[0038] The light-collecting structure 21 in Embodiment 1 can also be configured as a total internal reflection planar structure, and the total internal reflection structure 22 can be configured as a concave structure. Of course, it is preferred that the light-collecting structure 21 is a parabolic structure and the total internal reflection structure 22 is a planar structure.

[0039] The light-collecting structure 21 in Embodiment 1 can also be provided with a diffusion pattern, and the thick-walled member 2 in Embodiment 1 has a stepped structure on one side a in the second direction.

[0040] The optical structure designed in Example 1, which achieves uniform illumination through reflection and light collection, allows the light emitted by the LED light source 4 to pass through light collection, total reflection, diffusion, and re-diffusion, making the light output more uniform and solving the problem of uneven illumination. At the same time, in this structural design of Example 1, the LED light source 4 is far away from the light output position, which can further avoid the problem of bright spots caused by direct illumination from the LED light source and improve the illumination uniformity effect.

[0041] Example 2

[0042] The difference between Example 2 and Example 1 is that Example 2 does not include the pre-diffusion structure 23, while the rest is the same as Example 1.

[0043] Because the structure in Example 2 lacks a light diffusion process, its illumination uniformity is worse than that in Example 1, but its brightness is correspondingly improved.

[0044] Example 3

[0045] The difference between Example 3 and Example 1 is that Example 3 does not have a pre-diffusion structure 23, and the light-emitting end of the thick-walled component 2 in Example 3 does not have a diffusion structure 24. The rest is the same as Example 2.

[0046] Because the structure of Example 3 reduces two light diffusion processes, its illumination uniformity is worse than that of Example 1, but its brightness is better than that of Example 1. Furthermore, the illumination uniformity of Example 3 is worse than that of Example 2, but its brightness is better than that of Example 2.

[0047] Example 4

[0048] The difference between Example 4 and Example 1 is that Example 4 does not have a decorative ring 3, but the rest is the same as Example 1.

[0049] The above-described preferred embodiments of this utility model are for illustrative purposes only and are not intended to limit the scope of this utility model. Any obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model.

Claims

1. An optical structure for achieving uniform illumination through light reflection and collection, characterized in that, The structure includes the following settings: PCB board (1), which is electrically connected to several LED light sources (4) arranged in a second direction; And a thick-walled component (2), which has a light-incident end and a light-outceasing end. A light-receiving structure (21) is provided on the light-incident end. A total internal reflection structure (22) is also provided on the thick-walled component (2) between the light-receiving structure (21) and the light-outceasing end. The light-receiving structure (21) is located close to the LED light source (4). It is used to receive the light emitted by the LED light source (4) and reflect it to the total internal reflection structure (22). The total internal reflection structure (22) is used to reflect the received reflected light back to the light-outceasing end of the thick-walled component (2) and emit it out, forming a uniform lighting effect.

2. The optical structure for achieving uniform illumination through light reflection and collection according to claim 1, characterized in that, The structure also includes a decorative ring (3), which is disposed above the light-emitting end of the thick-walled member (2). The light emitted from the light-emitting end is then emitted through the decorative ring (3) to form a uniform lighting effect.

3. The optical structure for achieving uniform illumination through light reflection and collection according to claim 2, characterized in that, The decorative ring (3) is composed of a light-transmitting part (31) and a light-blocking part (32) formed around the light-transmitting part (31). The light-transmitting part (31) is provided corresponding to the light-emitting end of the thick-walled member (2).

4. The optical structure for achieving uniform illumination through reflection and light collection according to claim 3, characterized in that, The light-transmitting part (31) is also provided with a diffusion pattern.

5. The optical structure for achieving uniform illumination through light reflection and collection according to claim 1, characterized in that, The light-collecting structure (21) is configured as a total reflection planar structure or a parabolic structure; the total reflection structure (22) is configured as a planar structure or a curved surface structure.

6. An optical structure for achieving uniform illumination through reflection and light collection according to claim 1 or 5, characterized in that, The light-collecting structure (21) is surface-treated, and a diffusion pattern can also be provided on the light-collecting structure (21).

7. The optical structure for achieving uniform illumination through light reflection and collection according to claim 1, characterized in that, A diffusion structure (24) is provided on the light-emitting end of the thick-walled component (2).

8. An optical structure for achieving uniform illumination through reflection and light collection according to claim 1 or 7, characterized in that, A pre-diffusion structure (23) is also provided on the thick-walled member (2) between the total reflection structure (22) and the diffusion structure (24) optical path; The total reflection structure (22) reflects light to the pre-diffusion structure (23) for diffusion, and the diffused light is then conducted by the thick-walled member (2) to the diffusion structure (24) for secondary diffusion.

9. The optical structure for achieving uniform illumination through reflection and light collection according to claim 8, characterized in that, The thick-walled member (2) has a notch (25) in the thickness direction, and the pre-diffusion structure (23) is disposed on two opposite sides of the notch (25).

10. The optical structure for achieving uniform illumination through reflection and light collection according to claim 1, characterized in that, The included angle α between the PCB board (1) and the light output axis is set to 90±40°; the included angle β between the thick-walled component (2) and the light output axis is set to 0±20°.

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