Car lamp thick-wall part with crystal diamond effect
By designing specific shapes and angles such as inverted triangular grooves and arc surfaces on the inner surface of the thick-walled components of the headlights, the problem of light obstruction by the appearance patterns of the thick-walled components was solved, achieving a crystal effect and uniform light emission.
Patent Information
- Application Number
- CN202520473625.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-18
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-03-18
AI Technical Summary
The existing thick-walled components of automotive lights have patterns that obstruct the uniform light distribution, failing to achieve the smooth and transparent effect of crystal, and also affecting the uniformity of light emission.
The pattern design of the thick-walled parts is placed on the inner surface, while the outer surface is smooth. Through the design of specific shapes and angles, including inverted triangular grooves, arc surfaces, vertical surfaces, diffusion patterns and rounded corners, the light is ensured to be evenly distributed.
It achieves a crystal-clear effect with a transparent appearance while ensuring uniform light emission and concealment of the internal structure.
Smart Images

Figure CN223924572U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive lighting, and more specifically, to the structure of thick-walled components for automotive lighting. Background Technology
[0002] Headlights are essential components of vehicles, and with economic development, users and manufacturers are increasingly demanding higher standards for the user experience of headlights. Thick-walled light guides, as crucial components in headlights, guide and diffuse the light emitted by the LED light source in all directions. Currently, most thick-walled headlight components on the market have patterns applied to their outer surface. While headlight designs are becoming increasingly sophisticated and light emission patterns are becoming more diverse, and thick-walled components are widely used, to ensure overall illumination uniformity and to conceal the internal structure, patterns are applied to the outer surface of these components to obstruct light distribution. Because the patterns are on the outer surface, the overall appearance cannot achieve a crystal-clear, smooth finish. Utility Model Content
[0003] To achieve a crystal-like light transmission effect, this utility model provides a thick-walled component for automotive headlights. The pattern of the thick-walled component in front of the light guide is formed on the inner surface of the thick wall, while the outer surface is smooth. This results in an overall transparent, crystal-like effect in a static appearance, while also ensuring uniform light emission when illuminated. The specific technical solution is as follows:
[0004] A thick-walled automotive headlight component with a crystal-like effect has an outer light-emitting surface and an inner light-receiving surface. The light-emitting surface has multiple cross-sections with inverted triangular grooves between them. One side of the cross-section is an arc-shaped surface with a transition angle of 15-30°, and the other side is a vertical surface. The entire light-emitting surface is smooth. A diffusion pattern is provided on the light-receiving surface. The diffusion pattern is a folded surface with an inclination angle of 30-60° and a thickness of 0.5mm to 0.7mm.
[0005] Furthermore, all corners of the cross-section are set as rounded bevels.
[0006] Furthermore, the groove extends 1-2 cm into the smooth surface.
[0007] Furthermore, the inner end of the thick-walled component is set as a triangle, which slopes from top to bottom at an angle of 15-25°.
[0008] Furthermore, mounting holes are provided on the upper part of the thick-walled component to facilitate installation.
[0009] This invention features a pattern on the inner surface of the thick-walled component of the light guide, with a smooth outer surface. Specifically, it relates to the shape and tilt angle of the smooth surface, as well as the angle and thickness of the diffusion pattern on the inner end. This results in a static appearance that is transparent and has a crystal-like effect, while ensuring uniform light emission. Attached Figure Description
[0010] Figure 1 Schematic diagram of the thick-walled component of this utility model;
[0011] Figure 2 Side view of the thick-walled component of this utility model;
[0012] Figure 3 Exploded view of the installation structure of this utility model;
[0013] Figure label:
[0014] 1-Light distribution lens, 2-Inner lens, 3-Thick-walled component, 4-Light guide, 5-LED module, 6-Decorative frame, 7-Base, 31-Outer end, 32-Inner end, 33-Groove, 34-Mounting hole. Detailed Implementation
[0015] 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0016] A thick-walled automotive headlight component with a crystal effect is disclosed. The outer end 31 of the thick-walled component 3 is a light-emitting surface, and the inner end 32 of the thick-walled component is a light-incident surface. The light-emitting surface is configured with multiple cross-sections, and inverted triangular grooves 33 are provided between the cross-sections. One side of the cross-sections is configured as an arc surface with a transition angle of 15-30°, and the other side is configured as a vertical surface. The light-emitting surface is configured as a smooth surface. A diffusion pattern is provided on the light-incident surface. The diffusion pattern is a folded surface with an inclination angle of 30-60° and a thickness of 0.5mm to 0.7mm.
[0017] All corners of the cross-section are set as rounded bevels, and the groove 33 extends 1-2cm into the smooth surface; the inner end 32 of the thick-walled part is set as a triangle, sloping from top to bottom, and a mounting hole 34 is provided on the upper part of the thick-walled part for easy installation.
[0018] Specific installation details are as follows: Figure 3 As shown, the combined light structure mainly includes a light distribution lens 1, an inner light distribution element 2, a thick-walled component 3, a light guide 4, an LED module 5, a decorative frame 6, and a base 7. The inner light distribution element and the decorative frame are made of dual-color injection molding and are connected to the light guide and light distribution lens by bolts. The LED module is screwed to the base, and finally, the light distribution lens is glued to the base. The thick-walled component has a patterned inner surface, while the outer surface is smooth, presenting a clean and transparent crystal-like lighting effect.
[0019] The preferred embodiments of this patent have been described in detail above. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.
Claims
1. A thick-walled member for a vehicle lamp having a crystal diamond effect, characterized by: The outer end (31) of the thick-walled part (3) is a light-out surface, and the inner end (32) of the thick-walled part is a light-in surface; the light-out surface is provided with a plurality of sections, and inverted triangular grooves (33) are arranged between the sections; one side of the sections on both sides is provided with an arc surface, and the transition angle is 15-30°; the other side is provided with a vertical surface; the light-out surface is provided as a smooth surface as a whole; a diffusion pattern is arranged on the light-in surface, the diffusion pattern is a fold surface, the inclination angle is 30-60°, and the thickness is 0.5-0.7 mm.
2. The thick-walled member for vehicle lamp having a crystal diamond effect according to claim 1, characterized in that: The angles of the sections are all provided as arc guide angles.
3. The thick-walled vehicle lamp component having a crystal diamond effect according to claim 1, characterized in that: The depth of the grooves (33) into the light-out surface is 1-2 cm.
4. The thick-walled vehicle lamp component having a crystal diamond effect according to claim 1, characterized in that: The inner end (32) of the thick-walled part is provided as a triangular shape, which is inclined from the upper part to the lower part.
5. The thick-walled vehicle lamp component having a crystal diamond effect according to claim 1, characterized in that: A mounting hole (34) is arranged on the upper part of the thick-walled part, facilitating installation.