Automobile signal lamp LED internal lighting device
By using stepless patterned light guides and conic curve parameter adjustment in automotive signal lights, the problems of concentrated and uneven distribution of light energy in traditional vehicle lights have been solved, achieving uniform light distribution and efficient energy utilization.
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
- 2026-07-03
AI Technical Summary
The light emission method of LEDs and their internal components in traditional car lights causes energy to be concentrated at a specific angle, which cannot be effectively utilized, resulting in blind spots and uneven energy distribution.
It adopts a stepless light guide with conic section parameter adjustment, and achieves uniform light distribution and rational energy utilization by controlling the light direction within the light guide. It uses a honeycomb arc surface and LED lamp body spacing design to regulate the light direction.
It improves the utilization rate of light energy, reduces blind spots, achieves uniform light distribution and reasonable energy control, and enhances the lighting effect.
Smart Images
Figure CN224454408U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive lighting technology, and in particular to an LED-integrated lighting device for automotive signal lights. Background Technology
[0002] With the booming automotive industry and the rapid development of automobiles, while maintaining aesthetic design and various performance aspects, cost-effectiveness has become an important factor for car buyers. This has extended to the automotive lighting industry, where achieving the same effect at a lower cost has become the design philosophy of the new era for automotive lights.
[0003] In traditional vehicle headlights, LEDs with direct-projection designs emit light in a single direction along the normal, resulting in energy concentration at a specific angle. A large amount of light is scattered and lost due to ineffective utilization. This design can only achieve basic illumination through direct projection and cannot precisely control the light path. Especially in complex road conditions, it is prone to problems such as blind spots or uneven energy distribution, which need to be optimized. Utility Model Content
[0004] To address the aforementioned problems, this utility model proposes an LED-embedded lighting device for automotive signal lights, thereby overcoming the shortcomings of existing solutions.
[0005] To achieve the purpose of this utility model, the utility model is implemented through the following technical solution: an LED internal lighting device for automotive signal lights, including a light guide, a first light-emitting surface on the front of the light guide, and a first incident surface on the back of the light guide;
[0006] A light source is disposed on the back of the light guide, facing the first incident surface, and there is a gap A between the light source and the first incident surface;
[0007] Without stepped patterns, it is laid on the first light-emitting surface and the first incident surface. By changing the conic curve parameters, the direction of the light entering the light guide is adjusted, so that the light is dispersed.
[0008] A further improvement is that the light source includes several LED lamp bodies, with a gap B between two adjacent LED lamp bodies.
[0009] A further improvement is that the interval A / interval B is greater than or equal to 2 / 1.5.
[0010] A further improvement is that the stepless pattern consists of several arc-shaped surfaces arranged in a honeycomb pattern. The boundaries of the arc-shaped surfaces form a starting angle line and an ending angle line. The starting angle line forms an angle A with the normals of the first light-emitting surface and the first incident surface, and the ending angle line forms an angle B with the normals of the first light-emitting surface and the first incident surface.
[0011] Where -90°≤angle A≤90°, -90°≤angle B≤90°.
[0012] A further improvement is that the conic section parameters have three adjustment methods:
[0013] Adjustment method 1: Set the conic section parameter to C1, 0 < C1 < 0.5;
[0014] Adjustment method 2: Set the conic section parameter to C2, 0.5 < C2 < 1;
[0015] Adjustment method 3: Set the conic section parameter to C3, C3 = 0.5.
[0016] A further improvement is that the outer side of the light guide is provided with a decorative frame for supporting the light guide.
[0017] Compared with the prior art, the beneficial effects of this utility model are:
[0018] The light-emitting and incident surfaces of the light guide have stepless patterns. The stepless patterns can control the scattering of light by adjusting the parameters of the conic section. Through reasonable light source arrangement, the energy distribution can be more reasonable, the light emission direction can be controlled, and the energy utilization rate can be improved. Attached Figure Description
[0019] 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.
[0020] Figure 1 This is a structural diagram of the decorative frame in this utility model.
[0021] Figure 2 This is a structural diagram of the light source in this utility model.
[0022] Figure 3 This is a structural diagram of the optical guide in this utility model.
[0023] Figure 4 This is a structural diagram of the first light-emitting surface in this utility model.
[0024] Figure 5 This is a structural diagram of the first incident surface in this utility model.
[0025] Figure 6 This is a structural diagram of the arc-shaped curved surface in this utility model.
[0026] Among them: 1. decorative frame; 2. light source;
[0027] 3. Optical guide; 31. First light-emitting surface; 32. First incident surface;
[0028] 4. No stepped pattern; 41. Curved surface; 42. Starting angle line; 43. Ending angle line. Detailed Implementation
[0029] 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.
[0030] according to Figures 1-6 As shown, this embodiment proposes an LED internal lighting device for automotive signal lights, including a light guide 3. The front of the light guide 3 is provided with a first light-emitting surface 31, and the back of the light guide 3 is provided with a first incident surface 32.
[0031] The decorative frame 1 is set on the outside of the light guide 3 to support the light guide 3;
[0032] Light source 2 is disposed on the back of light guide 3, and light source 2 faces the first incident surface 32. There is a gap A between light source 2 and the first incident surface 32.
[0033] The stepless pattern 4 is laid on the first light-emitting surface 31 and the first incident surface 32. By changing the conic curve parameters, the direction of the light entering the light guide 3 is adjusted, so that the light is dispersed.
[0034] The first light-emitting surface 31 and the first incident surface 32 of the light guide 3 have a stepless pattern 4. The stepless pattern 4 can control the scattering of light by adjusting the conic section parameters, making the energy distribution more reasonable, controlling the light-emitting direction, and improving the energy utilization rate.
[0035] Specifically, the light source 2 includes several LED lamp bodies, with a gap B between two adjacent LED lamp bodies;
[0036] It is worth explaining in detail that the interval A / interval B ≥ 2 / 1.5. At this distance, the uniformity of illumination of the two light sources in this scheme can be guaranteed by the 1.5 / 2 distance constraint, achieving a balance between optical uniformity, energy efficiency, and structural compactness. Exceeding this distance would require additional energy.
[0037] It is worth explaining in detail that the stepless pattern 4 is a number of arc-shaped curved surfaces 41 arranged in a honeycomb pattern. The boundaries of the arc-shaped curved surfaces 41 form a starting angle line 42 and an ending angle line 43. The starting angle line 42 forms an angle A with the normals of the first light-emitting surface 31 and the first incident surface 32, and the ending angle line 43 forms an angle B with the normals of the first light-emitting surface 31 and the first incident surface 32.
[0038] Where -90°≤angle A≤90°, -90°≤angle B≤90°.
[0039] The arc surface 41 is a non-rotationally symmetric optical surface constructed based on the equation of conic sections.
[0040] In this scheme, the conic section parameters have three adjustment methods:
[0041] Adjustment Method 1: Set the conic section parameter to C1, 0 < C1 < 0.5; C1 is the elliptical mode, which possesses the characteristic that "light originating from the first focus must pass through the second focus." Patterns in this mode can distribute energy more evenly.
[0042] Adjustment Method 2: Set the conic section parameter to C2, where 0.5 < C2 < 1; C2 is the hyperbola mode, possessing the characteristic that "light reflected from the first focal point has its backward extension passing through the second focal point." This mode results in high pattern energy utilization.
[0043] Adjustment Method 3: Set the conic section parameter to C3, C3 = 0.5; C3 is a parabolic mode, possessing the characteristic that "light emitted from the focal point is reflected and becomes parallel to the axis." The pattern in this mode can take into account both of the above characteristics.
[0044] The conic section parameters used in this scheme control the light-emitting direction of the light guide 3 without steps, through the starting angle line 42 and ending angle line 43 of the arc surface 41 boundary, thus directing the light towards the center. The conic section parameters correspond to three modes: hyperbola, ellipse, and parabola. Compared with traditional circular adjustment curves, it has stronger control over energy distribution and higher uniformity optimization capabilities. By adjusting the non-circular adjustment method of the conic section parameters to control the dispersion of the pattern, the energy distribution is made more reasonable, achieving a uniform distribution of light with an upper viewing angle of 0°-20° and inner and outer viewing angles of -60°-60°.
[0045] How this application works:
[0046] The light source 2 faces the first light-emitting surface 31. The light emitted by the light source 2 enters the light guide 3 through the first incident surface 32 and then shines outward through the first incident surface 32. The first light-emitting surface 31 and the first incident surface 32 of the light guide 3 have a stepless pattern 4. The stepless pattern 4 can control the dispersion of light by adjusting the conic section parameters, making the energy distribution more reasonable, controlling the light output direction, and improving the energy utilization rate.
[0047] The conic section parameters have three adjustment methods:
[0048] Adjustment method 1: Set the conic section parameter to C1, 0 < C1 < 0.5; C1 is the ellipse mode, which has the characteristic that "light originating from the first focus must pass through the second focus".
[0049] Adjustment method 2: Set the conic section parameter to C2, 0.5 < C2 < 1; C2 is the hyperbola mode, which has the characteristic that "the backward extension of light reflected from the first focus passes through the second focus".
[0050] Adjustment method 3: Set the conic section parameter to C3, C3 = 0.5; C3 is a parabola mode, which has the characteristic that "the light emitted from the focus is reflected and parallel to the axis after reflection".
[0051] 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.
[0052] 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. An LED internal lighting device for automotive signal lights, comprising a light guide (3), characterized in that: The light guide (3) has a first light-emitting surface (31) on its front side and a first incident surface (32) on its back side; Also includes: A light source (2) is disposed on the back of the light guide (3), the light source (2) is facing the first incident surface (32), and there is a gap A between the light source (2) and the first incident surface (32); The stepless pattern (4) is laid on the first light-emitting surface (31) and the first incident surface (32). By changing the conic curve parameters, the direction of the light entering the light guide (3) is adjusted, so that the light is dispersed.
2. The LED interior lighting device of claim 1, wherein: The light source (2) includes a plurality of LED lamp bodies, with a gap B between two adjacent LED lamp bodies.
3. The LED interior lighting device of claim 1, wherein: The interval A / the interval B is greater than or equal to 2 / 1.
5.
4. The LED interior lighting device of claim 1, wherein: The stepless pattern (4) consists of several arc-shaped curved surfaces (41) arranged in a honeycomb pattern. The boundaries of the arc-shaped curved surfaces (41) are formed with a starting angle line (42) and an ending angle line (43). The starting angle line (42) forms an angle A with the normals of the first light-emitting surface (31) and the first incident surface (32). The ending angle line (43) forms an angle B with the normals of the first light-emitting surface (31) and the first incident surface (32). Where -90°≤angle A≤90°, -90°≤angle B≤90°.
5. An automotive signal lamp LED-based illumination device according to claim 4, characterized in that: The conic section parameters have three adjustment methods: Adjustment method 1: Set the conic section parameter to C1, 0 < C1 < 0.5; Adjustment method 2: Set the conic section parameter to C2, 0.5 < C2 < 1; Adjustment method 3: Set the conic section parameter to C3, C3 = 0.
5.
6. A vehicle signal light LED internal lighting device according to any one of claims 1-5, characterized in that: The light guide (3) has a decorative frame (1) on its outer side for supporting the light guide (3).