Tail lamp with fin light guide structure
By adopting an integrated structure of light guide pillars and fins in automotive taillights, the lighting defects caused by gaps in the light guide pillars have been solved, resulting in reduced costs and weight, while improving the uniformity and aesthetics of light emission.
Patent Information
- Application Number
- CN202423041989.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-10
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-12-10
AI Technical Summary
In existing automotive taillights, gaps exist between the light guide pillars, making it difficult to eliminate lighting defects at the connection points. This results in high costs and heavy weight, failing to meet the requirements for cost control and lighting effect.
The taillight design adopts a finned light guide structure, in which the light guide column and fins are integrated into one structure. It features total reflection and dispersion optical structure, utilizes the fins to emit light, reduces the light guide gap, and reduces the number of LEDs by arranging LEDs on one side.
It achieves full illumination of the light guide pillars, reduces cost and weight, and improves light emission uniformity and aesthetics, meeting the automotive industry's requirements for cost control and illumination effect.
Smart Images
Figure CN223470072U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of vehicle lamps, and in particular relates to a tail lamp with a fin light guide structure. Background Art
[0002] With the evolution of current car taillight designs, the through-type solution has gradually become a major trend in taillight designs, so large-size luminous shapes have become the new star in taillight designs.
[0003] The current conventional solutions for penetrating light-emitting windows can be roughly divided into two categories: one is to arrange a large number of LEDs at the corresponding positions of the light-emitting surface, and deflect the light through a reflector or an inner lampshade to achieve lighting that penetrates the light-emitting surface. The other is to use several columnar light guides, combined with LEDs located on both sides or in the middle, to achieve points that penetrate the light-emitting surface. The above two methods still have shortcomings. The former has high costs and high weight due to the number of LEDs and other optical components. The latter has gaps between the light guide columns, making it difficult to eliminate lighting defects at the connection position. The above defects are difficult to meet the needs of the automotive industry, which is increasingly pressing for cost control and has higher requirements for lighting effects. Utility Model Content
[0004] In order to solve the technical problem in the prior art that there are gaps between light guide columns and it is difficult to eliminate the lighting defects at the connection positions, the utility model provides a taillight with a finned light guide structure.
[0005] To solve the above technical problems, the technical solution adopted by the present invention is a taillight with a finned light guide structure, comprising a housing, a bracket, an LED module, a decorative ring, and a lampshade; the bracket is mounted in the housing, the light guide and the decorative ring are mounted on the bracket, and the light guide is located between the bracket and the decorative ring; the lampshade is mounted at the opening of the housing;
[0006] The light guide is mounted on the bracket and includes a light guide column and a fin. The light guide column and the fin are an integrated structure, and the diameter of the light guide column is greater than the thickness of the fin.
[0007] The LED module includes a light-emitting LED, and the light-emitting LED is installed on one side of the light guide column.
[0008] In some embodiments, the light guide rod is located at the bottom of the fin.
[0009] In some embodiments, the bottom surface of the light guide column and the side surface close to the support are provided with first optical structures for total reflection of light, the side surface of the light guide column close to the bezel is provided with second optical structures for light dispersion, the surface of the fin away from the bezel is provided with third optical structures for light dispersion, and the surface of the bezel close to the fin is provided with a reflective structure.
[0010] In some embodiments, the bezel comprises a light-transmitting area and a non-light-transmitting area, and the light-transmitting area corresponds to the position of the fin.
[0011] In some embodiments, the light-transmitting area of the bezel is provided with fourth optical structures for light dispersion close to the position of the light guide column.
[0012] In some embodiments, the thickness of the fin is 30-40% of the diameter of the light guide column.
[0013] In some embodiments, the height of the fin is 3-5 times of the diameter of the light guide column.
[0014] In some embodiments, the support comprises a fitting surface and a receiving groove, the fin is fitted with the fitting surface, and the light guide column is arranged in the receiving groove.
[0015] In some embodiments, the surface of the LED module is further fitted with a heat sink.
[0016] Beneficial effects: the light guide column is used for receiving light emitted by the light-emitting LED of the LED module and emitting light through the fin, the structure is simple, the light guide column and the fin are integrated, there is no gap between the light guides, the light guides can be fully lighted, and only the light-emitting LED needs to be arranged at the light guide column, without arranging a large number of light-emitting LEDs. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to make the content of the utility model more easily and clearly understood, the utility model is further described in detail below according to specific embodiments and in combination with the drawings, wherein
[0018] Fig. 1 It is a structural schematic view of the utility model;
[0019] Fig. 2 It is a schematic view of the light guide and LED module installation structure;
[0020] Fig. 3 It is a schematic view of the light guide local structure.
[0021] Fig. 1. lampshade, 2. shell, 3. ring, 31. light transmission area, 32. non-light transmission area, 33. fourth optical structure, 4. support, 5. light guide, 51. light guide column, 52. first optical structure, 53. second optical structure, 54. fin, 55. third optical structure, 6. screw, 7. LED module, 71. PCB board, 72. light emitting LED, 8. heat sink. DETAILED DESCRIPTION
[0022] The application will be further described below in conjunction with specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the application, rather than all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative changes belong to the protection scope of the application.
[0023] As Figs. 1-3 shown, the utility model discloses a tail light with fin light guide structure, including shell 2, support 4, LED module 7, ring 3 and lampshade 1, support 4 installs in shell 2, light guide 5 and ring 3 are installed on support 4, and light guide 5 is located between support 4 and ring 3, and lampshade 1 is installed at the opening of shell 2.
[0024] Light guide 5 is installed on support 4 and includes light guide column 51 and fin 54, and light guide column 51 and fin 54 are integrated structure, and the diameter of light guide column 51 is greater than the thickness of fin 54.
[0025] LED module 7 includes light emitting LED 72, and light emitting LED 72 is installed on one side of light guide column 51.
[0026] Specifically, light guide 5 and PCB board 71 of LED module 7 can be fixed to support 4 through screw 6 and buckle, support 4 can be assembled to shell 2 through screw 6, ring 3 can be connected or connected to support 4 through screw 6, and finally lampshade 1 can be welded to the light outlet of shell 2. Light guide 5 is set as integrated structure of light guide column 51 and fin 54, there is no gap between light guide 5, light guide 5 can be all lighted, and light emitting surface emits light, that is, fin 54 emits light towards the surface of ring 3, and the diameter of light guide column 51 is set to be greater than the thickness of fin 54, so that the light receiving surface area of the side of light guide column increases, can accommodate more light emitted by light emitting LED 72, improves the light emitting effect of fin 54, thins the thickness of fin 54, reduces the overall weight of light guide 5, and is beneficial to light weight.
[0027] As Fig. 1 and 2As shown, in some embodiments, the light guide column 51 is located at the bottom of the fin 54. Setting the light guide column 51 at the bottom of the fin 54 makes the structure neater, and the surface of the fin 54 close to the decorative ring 3 is the light emitting surface, which is continuous and has a better lighting effect.
[0028] like Fig. 1 As shown, to enhance the lighting effect, in some embodiments, the bottom surface of the light guide column 51 and the side surface near the bracket 4 are provided with a first optical structure 52 for total reflection of light. The side of the light guide column 51 facing the decorative ring 3 is provided with a second optical structure 53 for dispersing light. The surface of the fin 54 facing away from the decorative ring 3 is provided with a third optical structure 55 for dispersing light. The surface of the decorative ring 3 near the fin 54 is provided with a reflective structure. The first optical structure 52 can totally reflect the incident light from the LED 72 and convert it into parallel light, preventing light leakage from the light guide column 51. Specifically, the second optical structure 53 can disperse the parallel light to create a uniform light output effect. The third optical structure 55 can disperse the parallel light and then evenly emit it from the light output surface of the fin 54, creating a uniform light output effect. The first optical structure 52, the second optical structure 53, and the third optical structure 55 can specifically be optical patterns, leather patterns, or ink-printed patterns. The reflective structure may be a reflective coating or the decorative ring may be made of white material and have a bright surface to reflect the light leaking from the fins 54 .
[0029] like Fig. 1 As shown, to enhance the luminous effect, in some embodiments, the bezel 3 includes a translucent region 31 and a non-translucent region 32. The translucent region 31 corresponds to the position of the fins 54. The translucent region 31 allows light emitted from the light-emitting surface of the fins 54 to pass through, while the non-translucent region 32 does not transmit light, preventing light from emitting into ineffective areas and causing visual impact. Specifically, the bezel 3 can be manufactured using a two-color injection molding process, with the translucent region 31 using a transparent material as the light-emitting window of the bezel 3, and the non-translucent region 32 using a non-transparent material.
[0030] like Fig. 1 As shown, in order to prevent optical structures such as the pattern on the surface of the light guide column 51 from being observed outside the lampshade 1, in some embodiments, the light-transmitting area 31 of the decorative ring 3 is provided with a fourth optical structure 33 that scatters the light near the light guide column 51 to achieve an optical effect and cover the light guide column 51, thereby improving the aesthetics.
[0031] Specifically, in some embodiments, the thickness of the fins 54 is 30% to 40% of the diameter of the light guide column 51. The larger diameter of the light guide column relative to the thickness of the fins 54 allows it to receive more LEDs 72, improving the brightness of the light. Furthermore, the thinner fins 54 reduce the overall mass of the light guide 5 structure.
[0032] Specifically, in order to improve the light emitting area, in some embodiments, the height of the fin 54 is 3-5 times the diameter of the light guide column 51.
[0033] As shown in Fig. 1 In order to facilitate the installation of the light guide 5, in some embodiments, the bracket 4 comprises a fitting surface and a receiving groove, the fin 54 is fitted with the fitting surface, and the light guide column 51 is arranged in the receiving groove.
[0034] As shown in Fig. 2 In order to improve the heat dissipation efficiency of the LED module 7, in some embodiments, the surface of the LED module 7 is further fitted with a heat sink 8.
[0035] The above specific embodiments further illustrate the purpose, technical scheme and beneficial effects of the present application. It should be understood that the above description is only for specific embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. A taillight with a finned light guide structure, characterized by, It comprises a shell (2), a support (4), a light guide (5), an LED module (7), a decorative ring (3) and a lampshade (1); the support (4) is installed in the shell (2), the light guide (5) and the decorative ring (3) are installed on the support (4), and the light guide (5) is located between the support (4) and the decorative ring (3), and the lampshade (1) is installed at the opening of the shell (2); The light guide (5) is installed on the support (4) and comprises a light guide column (51) and a fin (54), the light guide column (51) and the fin (54) are an integral structure, and the diameter of the light guide column (51) is greater than the thickness of the fin (54); The LED module (7) comprises a light-emitting LED (72), and the light-emitting LED (72) is installed on one side of the light guide column (51).
2. The taillight of claim 1, wherein, The light guide column (51) is located at the bottom of the fin (54).
3. The taillight of claim 2, wherein, The bottom surface of the light guide column (51) and the surface of one side close to the support (4) are provided with a first optical structure (52) for total reflection of light, the surface of one side of the light guide column (51) facing the decorative ring (3) is provided with a second optical structure (53) for light dispersion, and the surface of the fin (54) away from the decorative ring (3) is provided with a third optical structure (55) for light dispersion; the surface of one side of the decorative ring (3) close to the fin (54) is provided with a light reflection structure.
4. The taillight of any of claims 1-3, wherein, The decorative ring (3) comprises a light-transmitting area (31) and a non-light-transmitting area (32), and the light-transmitting area (31) corresponds to the position of the fin (54).
5. The taillight of claim 4, wherein, The light-transmitting area (31) of the decorative ring (3) is provided with a fourth optical structure (33) for light dispersion at the position close to the light guide column (51).
6. The taillight of claim 2, wherein, The thickness of the fin (54) is 30%-40% of the diameter of the light guide column (51).
7. The taillight of claim 2, wherein, The height of the fin (54) is 3-5 times of the diameter of the light guide column (51).
8. The taillight of claim 2, wherein, The support (4) comprises a fitting surface and a containing groove, the fin (54) is fitted with the fitting surface, and the light guide column (51) is arranged in the containing groove.
9. The taillight of claim 1, wherein, The surface of the LED module (7) is further fitted with a heat sink (8).