Light guide structure of thick-wall part of vehicle lamp
By employing a multi-level stepped reflective surface and light guide pattern design in the thick-walled components of the headlights, combined with positioning components and trim structures, the problems of light discontinuity and increased costs caused by large steps have been solved, achieving improvements in light uniformity and impact resistance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHIYAN DONGFENG SANLI VEHICLE LIGHTS CO LTD
- Filing Date
- 2025-07-11
- Publication Date
- 2026-07-24
AI Technical Summary
The existing thick-walled components of automotive lights have large steps that reduce the spacing between LED beads, increasing costs and causing visual light obstruction, so optical performance needs to be optimized.
It adopts a multi-level stepped reflective surface and light guide pattern design, combined with positioning components and frame structure, to ensure light uniformity and impact resistance, and to diffuse light through the light guide pattern to avoid the formation of dark areas.
It achieves uniform light coverage, reduces the requirements for LED bead spacing, lowers production costs, and improves the impact resistance and optical uniformity of the vehicle lights.
Smart Images
Figure CN224551355U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive lighting technology, and in particular to a light guide structure for a thick-walled component of an automotive lighting system. Background Technology
[0002] In the automotive lighting field, thick-walled components are key optical elements in vehicle lights and signal lights, and are widely used in daytime running lights, turn signals, brake lights, and position lights. These components are usually made of transparent PC / PMMA plastic material through injection molding and have excellent optical properties.
[0003] For example, patent application number CN202411820196.9 discloses a thick-walled component for automotive lights, comprising: a lens with a light inlet; a substrate, at least one side facing the lens being designed as a plane; and LED beads located on the side of the substrate facing the lens, electrically connected to the substrate. The LED beads are movable relative to the lens and can be aligned with the light inlet through this displacement, so that the light from the LED beads is concentrated into the light inlet and emitted outwards from the other side of the lens. Due to shape limitations, some thick-walled components require the retention of large stepped patterns. When these large steps cannot be replaced with smaller ones, when the LED beads are lit, the outer viewing angle will show a segmented lighting effect due to the presence of the large steps. To weaken this visual discontinuity, the spacing between the LED beads needs to be reduced, leading to increased costs, which requires optimization. Utility Model Content
[0004] To address the aforementioned problems, this utility model proposes a light guide structure for thick-walled automotive lamp components, thereby overcoming the shortcomings of existing designs.
[0005] To achieve the purpose of this utility model, the utility model is implemented through the following technical solution: a light guide structure for a thick-walled component of a vehicle lamp, including a side-projection thick wall, a reflective surface on one side of the side-projection thick wall, a light-emitting surface on the other side of the side-projection thick wall, and a light guide pattern C on the light-emitting surface;
[0006] The reflective surface is in the form of a multi-level stepped structure, including multiple steps arranged sequentially along a preset straight line; each step has a top surface and a side connecting surface, the top surface of the step is covered with a light guide pattern B, and the side connecting surface is covered with a light guide pattern A.
[0007] The outer side of the side-projection thick wall is provided with a decorative frame structure for fixing the side-projection thick wall, and a positioning component is provided at the connection between the decorative frame structure and the side-projection thick wall to prevent the side-projection thick wall from shifting.
[0008] A further improvement is that: an incident surface is provided on the side of the side projection thick wall away from the light-emitting surface, the incident surface is located at the bottom of the side projection thick wall, the incident surface is directly opposite the reflective surface, and an LED light source is provided on one side of the incident surface, the LED light source including several LED lamp bodies.
[0009] A further improvement is that the decorative frame structure includes a decorative frame A and a decorative frame B. The decorative frame A is located at the top of the side projection thick wall, and the decorative frame B is located at the bottom of the side projection thick wall. The positioning component is located on the connection surface between the decorative frame A and the side projection thick wall, and between the decorative frame B and the side projection thick wall.
[0010] A further improvement is that the positioning component includes a positioning cone, which is fixedly installed at the top and bottom of the side projection thick wall. A reinforcing rib is provided on one side of the positioning cone, and the reinforcing rib is fixedly connected to the side projection thick wall. A fixing member A is provided at one end of the decorative frame A near the side projection thick wall, and a fixing member B is provided at one end of the decorative frame B near the side projection thick wall. C-shaped slots are provided on the fixing members A and B, and the C-shaped slots are inserted and engaged with the positioning cone.
[0011] A further improvement is that a collimator is provided on the incident surface, and the collimator is fixedly connected to the side-projection thick wall.
[0012] A further improvement is that a thick-walled light guide is provided on one side of the side projection thick wall, and the thick-walled light guide is positioned directly opposite the light-emitting surface.
[0013] A further improvement is that the light guide pattern A and the light guide pattern B are either striped patterns or quadrilateral patterns.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] When light is transmitted within the thick wall of the side projection, the light reflection angle is changed by the light guide pattern A, which disperses the light emitted by a single LED into multiple secondary light beams, so that the light forms a wider illumination coverage on the top surface of the step. In other words, the light guide compensation of the pattern avoids the appearance of dark areas, ensures the overall light uniformity of the reflective surface, and thus achieves the purpose of cost reduction. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a structural diagram of the side-projection thick-walled structure in this utility model.
[0018] Figure 2 This is a structural diagram of the light-emitting surface in this utility model.
[0019] Figure 3 This is a structural diagram of the decorative frame A in this utility model.
[0020] Figure 4 This is a structural diagram of the decorative frame B in this utility model.
[0021] Figure 5 This is a structural diagram of the incident surface in this utility model.
[0022] Among them: 1. Side projection thick wall; 10. Light guide pattern A; 11. Light emitting surface; 12. Reflecting surface; 13. Light guide pattern B; 14. Light guide pattern C; 15. Incident surface; 2. Frame A; 21. Fixing component A; 3. Frame B; 31. Fixing component B; 4. Positioning cone; 41. Reinforcing rib; 42. C-shaped slot. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0024] according to Figure 1 , 2 As shown in Figures 3 and 4, this embodiment proposes a light guide structure for a thick-walled component of a vehicle lamp, including a side-projection thick wall 1, a reflective surface 12 on one side of the side-projection thick wall 1, a light-emitting surface 11 on the other side of the side-projection thick wall 1, and a light guide pattern C14 on the light-emitting surface 11.
[0025] The reflective surface 12 is in the form of a multi-level stepped structure, including multiple steps arranged sequentially along a preset straight line; each step has a top surface and a side connecting surface, the top surface of the step is covered with a light guide pattern B13, and the side connecting surface is covered with a light guide pattern A10.
[0026] In two adjacent steps, the lateral connecting surface of the step in front smoothly connects with the top surface of the step behind, forming a continuous stepped incident structure.
[0027] The LED light source incident light from the side of the side projection thick wall 1 into the side projection thick wall 1. After being reflected by the reflective surface 12, the light is transmitted outward through the light-emitting surface 11. When the light is transmitted within the side projection thick wall 1, the light reflection angle is changed by the light guide pattern A10, which disperses the light emitted by a single LED into multiple secondary light beams, so that the light forms a wider illumination coverage on the top surface of the step. Since the light guide pattern A10 can effectively diffuse the light, the illumination areas of adjacent LEDs can overlap and cover each other. Even if the spacing between LED particles is increased from the original design, dark areas can still be avoided through the light guide compensation of the pattern, ensuring the overall light uniformity of the reflective surface 12, thereby achieving the purpose of cost reduction.
[0028] The side projection thick wall 1 is provided with a decorative frame structure on the outside for fixing the side projection thick wall 1, and a positioning component is provided at the connection between the decorative frame structure and the side projection thick wall 1 to prevent the side projection thick wall 1 from shifting.
[0029] By using the lateral support of the side-projection thick wall 1 through the frame structure, the impact resistance of the side-projection thick wall 1 can be effectively enhanced. By setting a positioning device at the connection between the two, it can be ensured that the side-projection thick wall 1 will not shift during installation, ensuring the accurate position of the functional surface and stable performance. At the same time, it can also effectively enhance its vibration resistance and impact resistance, and enhance the overall reliability.
[0030] It is worth explaining in detail that the side projection thick wall 1 has an incident surface 15 on the side away from the light-emitting surface 11. The incident surface 15 is located at the bottom of the side projection thick wall 1 and is directly opposite the reflective surface 12. An LED light source is provided on one side of the incident surface 15, and the LED light source includes several LED lamp bodies.
[0031] Regarding the frame structure:
[0032] The decorative frame structure includes a decorative frame A2 and a decorative frame B3. The decorative frame A2 is located at the top of the side projection thick wall 1, and the decorative frame B3 is located at the bottom of the side projection thick wall 1. Positioning components are located on the connecting surfaces between the decorative frame A2 and the side projection thick wall 1, and between the decorative frame B3 and the side projection thick wall 1. The decorative frames A2 and B3 support the side projection thick wall 1 from the top and bottom, respectively.
[0033] Specifically, the positioning component includes a positioning cone 4, which is fixedly installed at the top and bottom of the side projection thick wall 1. A reinforcing rib 41 is provided on one side of the positioning cone 4, and the reinforcing rib 41 is fixedly connected to the side projection thick wall 1. A fixing member A21 is provided at one end of the decorative frame A2 near the side projection thick wall 1, and a fixing member B31 is provided at one end of the decorative frame B3 near the side projection thick wall 1. C-shaped slots 42 are provided on the fixing members A21 and B31, and the C-shaped slots 42 are inserted and engaged with the positioning cone 4.
[0034] The side-projection thick wall 1 is fixed between the decorative frame A2 and the decorative frame B3. The positioning cones 4 at the top and bottom of the side-projection thick wall 1 will be inserted into the C-shaped slots 42 opened on the fixing parts A21 and B31. The C-shaped slots 42 limit the side-projection thick wall 1 by cooperating with the positioning cones 4, ensuring that the side-projection thick wall 1 will not shift after installation.
[0035] In the preferred embodiment, the light guide patterns A10 and B13 are either striped patterns or quadrilateral patterns.
[0036] Optionally, a collimator is provided on the incident surface 15, and the collimator is fixedly connected to the side projection thick wall 1. After the light is collimated by the collimator, it enters the side projection thick wall 1 and can propagate more regularly through the reflecting surface 12 inside the side projection thick wall 1, reducing the amount of light escaping the side projection thick wall 1 due to excessive angle.
[0037] A thick-walled light guide is provided on one side of the side-projection thick-walled structure 1, and the thick-walled light guide is positioned directly opposite the light-emitting surface 11. The side-projection thick-walled structure 1 and the thick-walled light guide are used together to form a double thick-walled structure. The double thick-walled structure can reduce the light path deviation caused by vehicle bumps or temperature stress by working together to resist vibration and deformation, and ensure uniform light pattern. In addition, the outer layer can be integrated with micro-textures to assist light diffusion, while the inner layer focuses on light guiding, which can effectively adapt to the compact design requirements of automobiles.
[0038] Both the side-projection thick-walled 1 and the thick-walled light guide are made of transparent material. The materials available are PC / PMMA, and the color is not limited.
[0039] How this application works:
[0040] The LED light source incident light from the side of the side projection thick wall 1 into the side projection thick wall 1. After being reflected by the reflective surface 12, the light is transmitted outward through the light-emitting surface 11. When the light is transmitted within the side projection thick wall 1, the light reflection angle is changed by the light guide pattern A10, which disperses the light emitted by a single LED into multiple secondary light beams, so that the light forms a wider illumination coverage on the top surface of the step. Since the light guide pattern A10 can effectively diffuse the light, the illumination areas of adjacent LEDs can overlap and cover each other. Even if the spacing between LED particles is increased from the original design, dark areas can still be avoided through the light guide compensation of the pattern, ensuring the overall light uniformity of the reflective surface 12, thereby achieving the purpose of cost reduction.
[0041] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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 application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.
[0042] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.
Claims
1. A light guide structure for a thick-walled component of a vehicle lamp, comprising a side-projection thick wall (1), wherein a reflective surface (12) is provided on one side of the side-projection thick wall (1), and a light-emitting surface (11) is provided on the other side of the side-projection thick wall (1), characterized in that, The light-emitting surface (11) is provided with a light-guiding pattern C (14); The reflective surface (12) is in the form of a multi-level stepped structure, including multiple steps arranged sequentially along a preset straight line direction; each step has a top surface and a side connecting surface, the top surface of the step is covered with a light guide pattern B (13), and the side connecting surface is covered with a light guide pattern A (10). The side projection thick wall (1) is provided with a decorative frame structure for fixing the side projection thick wall (1) on the outside. The connection between the decorative frame structure and the side projection thick wall (1) is provided with a positioning component for preventing the side projection thick wall (1) from shifting.
2. The light guide structure for a thick-walled component of a vehicle lamp according to claim 1, characterized in that: The side projection thick wall (1) has an incident surface (15) on the side away from the light-emitting surface (11). The incident surface (15) is located at the bottom of the side projection thick wall (1). The incident surface (15) is directly opposite the reflective surface (12). An LED light source is provided on one side of the incident surface (15). The LED light source includes several LED lamp bodies.
3. The light guide structure for a thick-walled automotive lamp component according to claim 1, characterized in that: The decorative frame structure includes a decorative frame A (2) and a decorative frame B (3). The decorative frame A (2) is disposed on the top of the side projection thick wall (1), and the decorative frame B (3) is disposed on the bottom of the side projection thick wall (1). The positioning component is disposed on the connecting surface between the decorative frame A (2) and the side projection thick wall (1) and between the decorative frame B (3) and the side projection thick wall (1).
4. The light guide structure for a thick-walled component of a vehicle lamp according to claim 3, characterized in that: The positioning component includes a positioning cone (4), which is fixedly disposed at the top and bottom of the side projection thick wall (1). A reinforcing rib (41) is provided on one side of the positioning cone (4), and the reinforcing rib (41) is fixedly connected to the side projection thick wall (1). A fixing member A (21) is provided at one end of the decorative frame A (2) near the side projection thick wall (1), and a fixing member B (31) is provided at one end of the decorative frame B (3) near the side projection thick wall (1). C-shaped slots (42) are provided on the fixing members A (21) and B (31), and the C-shaped slots (42) are inserted into the positioning cone (4).
5. The light guide structure for a thick-walled automotive lamp component according to claim 2, characterized in that: A collimator is provided on the incident surface (15), and the collimator is fixedly connected to the side-projection thick wall (1).
6. The light guide structure for a thick-walled component of a vehicle lamp according to claim 1, characterized in that: A thick-walled light guide is provided on one side of the side projection thick wall (1), and the thick-walled light guide is positioned opposite the light-emitting surface (11).
7. A light guide structure for a thick-walled component of a vehicle lamp according to any one of claims 1-6, characterized in that: The light guide pattern A (10) and the light guide pattern B (13) are either striped patterns or quadrilateral patterns.