Light uniformizing structure and vehicle lamp
By introducing a light-guiding unit design with a V-shaped refraction portion into the headlight, the problem of uneven light from existing headlights is solved, achieving uniform light distribution and efficient lighting effects.
Patent Information
- Application Number
- CN202422760887.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-12
- Publication Date
- 2025-09-12
- Estimated Expiration
- 2034-11-12
AI Technical Summary
The light guide device of the existing headlights is difficult to achieve uniform mixing of light from area A to area B, resulting in uneven lighting effect.
A light uniformity structure is adopted, including a first light guide unit and a second light guide unit, with an outwardly protruding V-shaped refraction part provided between the two. The light is refracted multiple times in the structure and then emitted. The uniform distribution of light is achieved through the design of the first and second refraction parts.
It achieves a uniform lighting effect of light, improves the light efficiency, and enhances the dimming performance of the headlights.
Smart Images
Figure CN223331543U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vehicle lamp lighting, in particular to a light uniforming structure and a vehicle lamp. Background Art
[0002] With the rapid development of automotive lighting technology, there are more and more styles. The uniformity and aesthetics of the lighting effect are one of the problems that suppliers urgently need to solve. The existing solution is that the light is emitted from the LED, passes through the light guide device, and then exits from the light-emitting surface to achieve a more uniform lighting effect.
[0003] In the prior art, for example, light from area A is adjusted to area B to achieve mixing of areas A and B, and requires uniform lighting; however, since most existing light guide devices are direct or reflective light guide devices, this is difficult to achieve. Utility Model Content
[0004] The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art and provide a light uniforming structure and a vehicle lamp. In this light uniforming structure, light is refracted multiple times within the structure and then emitted, resulting in uniform lighting, good dimming performance, and high light efficiency.
[0005] The technical solution adopted by the utility model to solve its technical problems is:
[0006] A light uniforming structure is provided with a first light guide unit and a second light guide unit in sequence along the light transmission direction, wherein the first light guide unit is provided with a light entrance portion, and a first refractive portion protruding outwardly is provided at the light exit end of the first light guide unit; the light entrance end of the second light guide unit is located outside the light exit end of the first light guide unit, and a second refractive portion protruding outwardly is provided at the light entrance end of the second light guide unit;
[0007] The cross section of the first refractive portion is V-shaped, the cross section of the second refractive portion is V-shaped, and the first refractive portion and the second refractive portion are arranged symmetrically.
[0008] Furthermore, the first refractive portion includes a first refractive surface and a second refractive surface connected vertically, and the second refractive portion includes a third refractive surface and a fourth refractive surface connected vertically.
[0009] Furthermore, the surface of the first refractive portion is a smooth surface or is provided with a light distribution pattern, and the surface of the second refractive portion is a smooth surface or is provided with a light distribution pattern.
[0010] Furthermore, the first refractive portion is longitudinally arranged at the light output end of the first light guide unit, and the second refractive portion is longitudinally arranged at the light input end of the second light guide unit.
[0011] Furthermore, the first refractive portion is transversely arranged at the light output end of the first light guide unit, and the second refractive portion is transversely arranged at the light input end of the second light guide unit.
[0012] Furthermore, the first refractive surface and the fourth refractive surface are arranged in parallel, and the second refractive surface and the third refractive surface are arranged in parallel.
[0013] Furthermore, the width of the first refractive surface is consistent with the width of the fourth refractive surface, and the width of the second refractive surface is consistent with the width of the third refractive surface.
[0014] Furthermore, the first light guide unit is a PMMA light guide or a PC light guide.
[0015] Furthermore, the second light guide unit is a PMMA light guide or a PC light guide.
[0016] A vehicle lamp comprises the above-mentioned light uniforming structure.
[0017] The beneficial effects of the present invention are as follows: the present invention has a simple structure and a reasonable design; the cross-section of the first refractive portion is V-shaped, the cross-section of the second refractive portion is V-shaped, and the first refractive portion and the second refractive portion are arranged symmetrically on the left and right; the light transmitted to the first refractive surface is refracted by the first refractive surface and then emitted into the air, and then refracted by the fourth refractive surface and then enters the second light guide unit; similarly, the light transmitted to the first refractive surface is refracted by the second refractive surface and then emitted into the air, and then refracted by the third refractive surface and then enters the second light guide unit; this structure has uniform lighting, good dimming performance, and high light efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0019] Figure 1 is a structural schematic diagram of the light uniformity structure in Example 1;
[0020] Figure 2 yes Figure 1 Structural diagram from another perspective;
[0021] Figure 3 is a schematic structural diagram of the first refractive portion and the second refractive portion;
[0022] Figure 4 is a light path diagram of the first refractive part and the second refractive part;
[0023] Figure 5 is a structural schematic diagram of the light uniformity structure in Example 2;
[0024] Figure 6 yes Figure 5Structural diagram from another perspective;
[0025] In the figure: 1. first light guide unit, 2. second light guide unit, 3. light incident portion, 4. first refractive surface, 5. second refractive surface, 6. third refractive surface, 7. fourth refractive surface. DETAILED DESCRIPTION
[0026] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which this application belongs.
[0027] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular also includes the plural. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.
[0028] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0029] Example 1
[0030] like Figures 1 to 4 A light uniforming structure shown in FIG. 1 is provided with a first light guide unit 1 and a second light guide unit 2 in sequence along the light transmission direction. The first light guide unit 1 has a light entrance portion 3 on its upper surface, and a first refractive portion protruding outwardly at the light output end of the first light guide unit 1. The light entrance end of the second light guide unit 2 is located outside the light output end of the first light guide unit 1, and a second refractive portion protruding outwardly is also provided at the light entrance end of the second light guide unit 2.
[0031] The cross section of the first refractive portion is V-shaped, the cross section of the second refractive portion is V-shaped, and the first refractive portion and the second refractive portion are arranged bilaterally symmetrically.
[0032] The first refractive portion includes a first refractive surface 4 and a second refractive surface 5 connected vertically, and the second refractive portion includes a third refractive surface 6 and a fourth refractive surface 7 connected vertically.
[0033] The surface of the first refractive portion is a smooth surface or is provided with a light distribution pattern, and the surface of the second refractive portion is a smooth surface or is provided with a light distribution pattern.
[0034] The first refractive surface 4 and the fourth refractive surface 7 are arranged in parallel, and the second refractive surface 5 and the third refractive surface 6 are arranged in parallel; the width of the first refractive surface 4 is consistent with the width of the fourth refractive surface 7, and the width of the second refractive surface 5 is consistent with the width of the third refractive surface 6.
[0035] The first light guide unit 1 is a PMMA light guide member, and the second light guide unit 2 is a PMMA light guide member.
[0036] A vehicle lamp comprises the above-mentioned light uniforming structure.
[0037] The transmission medium between the first light guide unit 1 and the second light guide unit 2 is air. The light emitted by the light input portion 3 is transmitted through the first light guide unit 1 and then emitted from the light output end (i.e., the first refractive portion) of the first light guide unit 1. The outgoing light then enters the second light guide unit 2 from the light input end (i.e., the second refractive portion) of the second light guide unit 2 and finally exits from the light output end of the second light guide unit 2. Specifically, the light transmitted to the first refractive surface 4 is refracted by the first refractive surface 4 and then emitted into the air. It is then refracted by the fourth refractive surface 7 and then enters the second light guide unit 2. Similarly, the light transmitted to the first refractive surface 4 is refracted by the second refractive surface 5 and then emitted into the air. It is then refracted by the third refractive surface 6 and then enters the second light guide unit 2.
[0038] The first refraction part is longitudinally arranged at the light output end of the first light guide unit 1, and the second refraction part is longitudinally arranged at the light input end of the second light guide unit 2. This structure facilitates left and right light uniformity.
[0039] In addition, the first light guide unit 1 and the second light guide unit 2 can be provided separately; or a connecting portion can be added so that the first light guide unit 1, the second light guide unit 2 and the connecting portion form an integrated structure.
[0040] Example 2
[0041] The difference from Example 1 is that Figure 5 and Figure 6 As shown, in this embodiment, the first refractive portion is transversely arranged at the light output end of the first light guide unit 1, and the second refractive portion is transversely arranged at the light input end of the second light guide unit 2. This structure facilitates achieving vertical light uniformity.
[0042] To sum up, this uniform light structure has a simple structure and a reasonable design. The cross-section of the first refractive part is V-shaped, the cross-section of the second refractive part is V-shaped, and the first refractive part and the second refractive part are symmetrically arranged on the left and right. The light transmitted to the first refractive surface 4 is refracted by the first refractive surface 4 and then emitted into the air, and then refracted by the fourth refractive surface 7 and then enters the second light guide unit 2; similarly, the light transmitted to the first refractive surface 4 is refracted by the second refractive surface 5 and then emitted into the air, and then refracted by the third refractive surface 6 and then enters the second light guide unit 2; this structure has uniform lighting, good dimming performance, and high light efficiency.
[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. A light uniforming structure, characterized by: Along the light transmission direction, a first light guide unit (1) and a second light guide unit (2) are sequentially arranged, wherein the first light guide unit (1) is provided with a light entrance portion (3), and the light exit end of the first light guide unit (1) is provided with a first refractive portion protruding outward; the light entrance end of the second light guide unit (2) is located outside the light exit end of the first light guide unit (1), and the light entrance end of the second light guide unit (2) is provided with a second refractive portion protruding outward; The cross section of the first refractive portion is V-shaped, the cross section of the second refractive portion is V-shaped, and the first refractive portion and the second refractive portion are arranged symmetrically.
2. The light uniforming structure according to claim 1, characterized in that: The first refractive portion comprises a first refractive surface (4) and a second refractive surface (5) connected up and down, and the second refractive portion comprises a third refractive surface (6) and a fourth refractive surface (7) connected up and down.
3. The light uniforming structure according to claim 1, characterized in that: The surface of the first refractive portion is a smooth surface or is provided with a light distribution pattern, and the surface of the second refractive portion is a smooth surface or is provided with a light distribution pattern.
4. The light uniforming structure according to claim 1, characterized in that: The first refractive portion is longitudinally arranged at the light output end of the first light guide unit (1), and the second refractive portion is longitudinally arranged at the light input end of the second light guide unit (2).
5. The light uniforming structure according to claim 1, characterized in that: The first refractive portion is transversely arranged at the light output end of the first light guide unit (1), and the second refractive portion is transversely arranged at the light input end of the second light guide unit (2).
6. The light uniforming structure according to claim 2, characterized in that: The first refractive surface (4) and the fourth refractive surface (7) are arranged in parallel, and the second refractive surface (5) and the third refractive surface (6) are arranged in parallel.
7. The light uniforming structure according to claim 6, characterized in that: The width of the first refractive surface (4) is consistent with the width of the fourth refractive surface (7), and the width of the second refractive surface (5) is consistent with the width of the third refractive surface (6).
8. The light uniforming structure according to claim 1, characterized in that: The first light guide unit (1) is a PMMA light guide or a PC light guide.
9. The light uniforming structure according to claim 1, characterized in that: The second light guide unit (2) is a PMMA light guide or a PC light guide.
10. A vehicle lamp, characterized in that: The device comprises the light uniforming structure according to any one of claims 1 to 9.