Thick-wall light guide automobile tail lamp and automobile
By using a double-layer thick-walled component structure and light dispersion technology, the problems of light leakage and bright spots in automotive taillights have been solved, achieving a more uniform and aesthetically pleasing lighting effect.
Patent Information
- Application Number
- CN202422699338.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-06
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-11-06
AI Technical Summary
The existing thick-walled light guide structure of automotive taillights suffers from light leakage and exposure of the internal structure of the light source, resulting in poor appearance.
The light source component adopts a double-layer thick-walled component structure. The light path of the light source component passes through the first thick-walled component and the second thick-walled component in sequence. By adjusting the shape and scattering pattern of the light-incident surface and the light-outceasing surface, the light is scattered twice, and a pattern is formed on the second light-outceasing surface, which reduces the bright spot of the light source and improves the aesthetics.
It effectively reduces bright spots from the light source, improves the uniformity and aesthetics of the light, and creates lighting effects with distinctive patterns.
Smart Images
Figure CN223537441U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive lighting technology, and in particular to an automotive taillight with a thick-walled light guide and an automobile. Background Technology
[0002] Automotive taillights, including position lights and brake lights, commonly use thick-walled components as light guides to direct and diffuse the light emitted from the source in all directions. However, most currently used thick-walled light guide solutions employ a single-layer thick-walled structure, meaning a single thick-walled component is placed at the light source. This structure allows bright spots of the light source to be observed from the side of the thick-walled component, indicating light leakage; similarly, internal structures such as circuit boards within the light source may also be visible, resulting in a poor aesthetic appearance. Utility Model Content
[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a thick-walled light guide for automotive taillights, which can reduce bright spots from the light source and provide more uniform and aesthetically pleasing illumination.
[0004] This utility model also proposes an automobile.
[0005] A thick-walled light guide for automobile taillights according to a first aspect of the present invention includes: a light source assembly;
[0006] A first thick-walled component is disposed in the optical path of the light source component. The first thick-walled component has a first light-incident surface and a first light-exiting surface. The first light-exiting surface is provided with a first scattering pattern.
[0007] The second thick-walled component is disposed in the optical path of the light source component. The second thick-walled component has a second light-incident surface and a second light-outceasing surface. The second light-incident surface is provided with a second scattering pattern, and the second light-outceasing surface is provided with a patterned pattern.
[0008] The light path of the light source component passes sequentially through the first light-incident surface, the first light-exiting surface, the second light-incident surface, and the second light-exiting surface, with a gap between the first light-exiting surface and the second light-incident surface.
[0009] The thick-walled light guide for automotive taillights according to embodiments of this utility model has at least the following beneficial effects: the light emitted by the light source assembly is first conducted through the first thick-walled assembly, and after passing through the first light-incident surface, the light path direction is adjusted. When passing through the first light-outceasing surface, it is dispersed once by the first scattering pattern. Then, the light enters the second thick-walled assembly for further conduction, and when passing through the second light-incident surface, it is further dispersed by the second scattering pattern, reducing the possibility of producing bright spots in the light source and making the light emission more uniform; when the light finally exits from the second light-outceasing surface, after the pattern is adjusted, it can form a pattern with distinctive effects, making it more aesthetically pleasing.
[0010] According to some embodiments of the present invention, in the cross-section of the first thick-walled component, the cross-sectional shape of the first light-incident surface is parabolic, and the convex direction of the first light-incident surface is towards the light source component.
[0011] According to some embodiments of the present invention, the first thick-walled component is provided with a set of relatively distributed first light-limiting parts, the first light-incident surface is located between the two first light-limiting parts, the two first light-limiting parts constitute a first optical path channel, and the first optical path channel connects the light source component with the first light-incident surface.
[0012] According to some embodiments of the present invention, the second thick-walled component is provided with a set of relatively distributed second light-limiting parts, the second light-incident surface is located between the two second light-limiting parts, the second light-limiting parts extend toward the first light-emitting surface, and the first light-emitting surface is located between the two second light-limiting parts, the two second light-limiting parts form a second optical path channel, and the second optical path channel connects the first light-emitting surface and the second light-incident surface.
[0013] According to some embodiments of the present invention, the second light-incident surface is provided with a plurality of arc-shaped protrusions, and the plurality of protrusions are evenly arranged and adjacent to each other.
[0014] According to some embodiments of the present invention, the light source assembly includes a mounting plate and a plurality of light-emitting beads, wherein the plurality of light-emitting beads are disposed on the mounting plate and the light-emitting beads are disposed facing the first light-incident surface.
[0015] According to some embodiments of the present invention, both the first thick-walled component and the second thick-walled component are elongated, and the first thick-walled component and the second thick-walled component are arranged in parallel. The mounting plate is also elongated, and the mounting plate is arranged in parallel with the first thick-walled component. The plurality of light-emitting beads are evenly spaced along the length direction of the mounting plate.
[0016] According to some embodiments of the present invention, a mounting bracket is included, the mounting bracket having a first plate and a second plate that are perpendicular to each other, the first plate having a mounting groove located on the side of the first plate facing the second plate, and the mounting plate being fitted into the mounting groove.
[0017] According to some embodiments of the present invention, the second light-emitting surface is provided with a graphic layer, and the graphic layer is provided with multiple hollowed-out parts to form the pattern.
[0018] According to a second aspect embodiment of the present invention, a car includes the above-described thick-walled light guide taillight.
[0019] The automobile according to the present invention has at least the following beneficial effects: the automobile taillight using the above-mentioned thick-walled light guide can reduce the bright spots of the light source, and the light emission is more uniform and more beautiful.
[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:
[0022] Figure 1 This is a cross-sectional structural schematic diagram of a thick-walled light guide for an automobile taillight according to an embodiment of the present invention.
[0023] Figure 2 This is an enlarged schematic diagram of a partial structure of the first thick-walled component according to an embodiment of the present invention;
[0024] Figure 3 This is an enlarged schematic diagram of a partial structure of the second thick-walled component according to an embodiment of the present invention.
[0025] Icon labels:
[0026] The light source assembly 100, mounting plate 110, light-emitting beads 120, first thick-walled assembly 200, first light-incident surface 210, first light-emitting surface 220, first light-limiting part 230, second thick-walled assembly 300, second light-incident surface 310, second light-emitting surface 320, second light-limiting part 330, mounting bracket 400, first plate 410, mounting groove 411, and second plate 420. Detailed Implementation
[0027] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0028] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.
[0029] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.
[0030] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.
[0031] Automotive taillights, including position lights and brake lights, commonly use thick-walled components as light guides to direct and diffuse the light emitted from the source in all directions. However, most currently used thick-walled light guide solutions employ a single-layer thick-walled structure, meaning a single thick-walled component is placed at the light source. This structure allows bright spots of the light source to be observed from the side of the thick-walled component, indicating light leakage; similarly, internal structures such as circuit boards within the light source may also be visible, resulting in a poor aesthetic appearance.
[0032] LED light sources are generally chosen for the taillights. The light emitted by the LED point light source cannot be well dispersed through the single-layer thick-walled structure. When viewed from the front, there will be faintly visible bright spots. The closer to the center of the LED light source, the brighter the local area.
[0033] Reference Figure 1 As shown, an embodiment of the present invention provides a thick-walled light guide for automotive taillights, comprising a light source assembly 100, a first thick-walled assembly 200, and a second thick-walled assembly 300.
[0034] It is important to understand that the light source component 100 is used to emit light, and LED light sources are commonly used. LEDs have low operating voltage, low power consumption, and high efficiency in converting electrical energy into light energy.
[0035] A first thick-walled component 200 is disposed in the optical path of the light source component 100. The first thick-walled component 200 has a first light-incident surface 210 and a first light-exiting surface 220. The first light-exiting surface 220 is provided with a first scattering pattern. A second thick-walled component 300 is disposed in the optical path of the light source component 100. The second thick-walled component 300 has a second light-incident surface 310 and a second light-exiting surface 320. The second light-incident surface 310 is provided with a second scattering pattern, and the second light-exiting surface 320 is provided with a pattern. The optical path of the light source component 100 passes through the first light-incident surface 210, the first light-exiting surface 220, the second light-incident surface 310, and the second light-exiting surface 320 in sequence, and there is a gap between the first light-exiting surface 220 and the second light-incident surface 310.
[0036] The light emitted from the light source assembly 100 first enters the first thick-walled assembly 200. The first thick-walled assembly 200 has a first light-incident surface 210 and a first light-exiting surface 220. When the light enters the first light-incident surface 210, by adjusting the structure of the first light-incident surface 210, the path of the light can be optimized, and the light rays emitted from the light source assembly 100 can be adjusted to approximately parallel light rays. Adjusting the structure of the first light-incident surface 210 refers to optimizing the cross-sectional shape of the first light-incident surface 210. The light continues to propagate in the first thick-walled assembly 200. When it passes through the first light-exiting surface 220, it is dispersed for the first time by the first scattering pattern, reducing bright spots caused by concentrated light.
[0037] A gap exists between the first light-emitting surface 220 and the second light-receiving surface 310. Light does not directly enter the second thick-walled component 300 from the first thick-walled component 200. Instead, it is refracted at both the first light-emitting surface 220 and the second light-receiving surface 310, ensuring that both the first and second scattering patterns function effectively. When the light passes through the second light-receiving surface 310, it is dispersed a second time by the second scattering pattern. After being dispersed twice, the light emitted by the light source component 100 minimizes light concentration and reduces the possibility of light spots appearing in the taillight. Simultaneously, after being dispersed, the light is scattered to various areas of both the first and second thick-walled components 200 and 300, resulting in more uniform emitted light.
[0038] It's important to understand that when the light finally exits from the second light-emitting surface 320, it is affected by the pattern, creating a distinctive and aesthetically pleasing design. For example, the pattern could be designed to resemble a crystal outline, ultimately achieving a lighting effect with a crystal-like outline.
[0039] It is understood that in the cross-section of the first thick-walled component 200, the cross-sectional shape of the first light-incident surface 210 is parabolic, and the convex direction of the first light-incident surface 210 is towards the light source component 100.
[0040] As described above, by adjusting the structure of the first light-incident surface 210, the movement path of the light can be optimized, and the light rays emitted from the light source assembly 100 can be adjusted into approximately parallel light rays. The cross-sectional shape of the first light-incident surface 210 is adjusted to a parabolic shape, with a convex part facing the light source assembly 100. After the light emitted from the light source assembly 100 passes through the first light-incident surface 210, the point-divergent light rays can be concentrated and adjusted into approximately parallel light rays, preventing the light from escaping from the side and reducing the brightness of the front of the taillight.
[0041] Reference Figure 2As shown, it can be understood that the first thick-walled component 200 is provided with a set of relatively distributed first light-limiting parts 230, and the first light-incident surface 210 is located between the two first light-limiting parts 230. The two first light-limiting parts 230 form a first optical path channel, which connects the light source component 100 with the first light-incident surface 210.
[0042] The first light-limiting part 230 is used to block the light emitted by the light source assembly 100 from escaping through the gap between the first thick-walled assembly 200 and the light source assembly 100, thus confining the light to conduct within the first light path channel. Visually, this reduces the likelihood of the light source assembly 100 being observed from the side of the taillight.
[0043] Reference Figure 3 As shown, it can be understood that the second thick-walled component 300 is provided with a set of relatively distributed second light-limiting parts 330, the second light-incident surface 310 is located between the two second light-limiting parts 330, the second light-limiting parts 330 extend toward the first light-exiting surface 220, and the first light-exiting surface 220 is located between the two second light-limiting parts 330, the two second light-limiting parts 330 form a second optical path channel, and the second optical path channel connects the first light-exiting surface 220 and the second light-incident surface 310.
[0044] Because there is a gap between the first light-emitting surface 220 and the second light-receiving surface 310, when light is emitted from the first light-emitting surface 220, it may also be emitted laterally through the gap between the first light-emitting surface 220 and the second light-receiving surface 310, which may also cause light spots to appear on the side of the taillight. The second light-limiting part 330 can effectively block the light emitted laterally and confine the light to conduction in the second light path channel.
[0045] It is understandable that the second light-incident surface 310 is provided with multiple arc-shaped protrusions, which are evenly distributed and adjacent to each other.
[0046] When light enters the second incident surface 310, it is refracted by the arc-shaped convex parts, which further disperses the light and reduces bright spots. Multiple arc-shaped convex parts are evenly arranged to form a patterned structure similar to the surface of corn, which further enhances the light dispersion effect.
[0047] Reference Figure 2 As shown, it can be understood that the light source assembly 100 includes a mounting plate 110 and a plurality of light-emitting beads 120, the plurality of light-emitting beads 120 being disposed on the mounting plate 110 and the light-emitting beads 120 being disposed facing the first light-incident surface 210.
[0048] The light-emitting bead 120 can be an LED. The mounting plate 110 can also serve as a circuit board for connecting the light-emitting bead 120.
[0049] It is understood that, preferably, the first thick-walled component 200 and the second thick-walled component 300 are both elongated, the first thick-walled component 200 and the second thick-walled component 300 are arranged in parallel, the mounting plate 110 is also elongated, the mounting plate 110 is arranged in parallel with the first thick-walled component 200, and the multiple light-emitting beads 120 are evenly spaced along the length direction of the mounting plate 110.
[0050] It is understandable that the thick-walled light guide automotive taillight also includes a mounting bracket 400, which has a first plate 410 and a second plate 420 that are perpendicular to each other. The first plate 410 is provided with a mounting groove 411, which is located on the side of the first plate 410 facing the second plate 420. The mounting plate 110 is snapped into the mounting groove 411.
[0051] The second plate 420 is used to fix it to the vehicle's connection structure to achieve the installation and fixation of the taillights. The mounting slot 411 provides installation space for the mounting plate 110, and the mounting plate 110 is fixed in the mounting slot 411 by a snap-fit connection, making installation more convenient. At the same time, a gap can be left between the mounting plate 110 and the mounting slot 411 for the connection and routing of circuit boards.
[0052] It should be understood that the groove wall of mounting slot 411 can also play a certain role in blocking the side-emitting light.
[0053] Understandably, the second light-emitting surface 320 has a graphic layer, which has multiple hollowed-out parts to form patterns.
[0054] The graphic layer has multiple cutout sections, meaning that unwanted parts are removed by material removal, leaving the solid portion as the pattern. It's important to understand that the graphic layer and the second thick-walled component 300 can be a single, integrated structure; therefore, the cutout sections of the graphic layer are actually recesses below the surface.
[0055] One embodiment of the present invention is a car taillight comprising the thick-walled light guide of any of the above-mentioned features.
[0056] The automotive taillights using the aforementioned thick-walled light guides can reduce bright spots from the light source and provide more uniform and aesthetically pleasing illumination. Specifically, the light emitted from the light source assembly first enters the first thick-walled assembly. This first thick-walled assembly has a first light-incident surface and a first light-exit surface. When the light enters the first light-incident surface, adjusting its structure optimizes the light path, transforming the point-divergent light from the light source assembly into approximately parallel rays. Adjusting the structure of the first light-incident surface refers to optimizing its cross-sectional shape. The light continues to propagate within the first thick-walled assembly. Upon passing the first light-exit surface, it is first dispersed by the first scattering pattern, reducing bright spots caused by concentrated light.
[0057] A gap exists between the first light-emitting surface and the second light-receiving surface. Light does not directly enter the second thick-walled component from the first; instead, it is refracted at both the first and second light-receiving surfaces, ensuring that both the first and second scattering patterns are effective. When the light passes through the second light-receiving surface, it is further dispersed by the second scattering pattern. This double dispersion minimizes light concentration and reduces the likelihood of light spots in the taillight. Simultaneously, the dispersed light is distributed to various areas of both the first and second thick-walled components, resulting in more uniform emitted light.
[0058] It's important to understand that when light finally exits from the second light-emitting surface, it is influenced by the pattern, creating a distinctive and aesthetically pleasing design. For example, the pattern could be designed to resemble a crystal outline, ultimately resulting in a lighting effect with a crystal-like outline.
[0059] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model 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 the present utility model.
Claims
1. A thick-walled light guide for automotive taillights, characterized in that, include: Light source assembly (100); A first thick-walled component (200) is disposed in the optical path of the light source component (100). The first thick-walled component (200) has a first light-incident surface (210) and a first light-emitting surface (220). The first light-emitting surface (220) is provided with a first scattering pattern. The second thick-walled component (300) is disposed in the optical path of the light source component (100). The second thick-walled component (300) has a second light-incident surface (310) and a second light-exiting surface (320). The second light-incident surface (310) is provided with a second scattering pattern, and the second light-exiting surface (320) is provided with a pattern. The light path of the light source component (100) passes through the first light-incident surface (210), the first light-exiting surface (220), the second light-incident surface (310), and the second light-exiting surface (320) in sequence, and there is a gap between the first light-exiting surface (220) and the second light-incident surface (310).
2. The automotive taillight with a thick-walled light guide according to claim 1, characterized in that, In the cross-section of the first thick-walled component (200), the cross-sectional shape of the first light-incident surface (210) is parabolic, and the convex direction of the first light-incident surface (210) is toward the light source component (100).
3. The automotive taillight with a thick-walled light guide according to claim 1, characterized in that, The first thick-walled component (200) is provided with a set of relatively distributed first light-limiting parts (230), the first light-incident surface (210) is located between the two first light-limiting parts (230), the two first light-limiting parts (230) form a first optical path channel, and the first optical path channel connects the light source component (100) and the first light-incident surface (210).
4. The automotive taillight with a thick-walled light guide according to claim 1, characterized in that, The second thick-walled component (300) is provided with a set of relatively distributed second light-limiting parts (330), the second light-incident surface (310) is located between the two second light-limiting parts (330), the second light-limiting parts (330) extend toward the first light-emitting surface (220), and the first light-emitting surface (220) is located between the two second light-limiting parts (330), the two second light-limiting parts (330) form a second optical path channel, and the second optical path channel connects the first light-emitting surface (220) and the second light-incident surface (310).
5. The automotive taillight with a thick-walled light guide according to claim 1, characterized in that, The second light-incident surface (310) is provided with a plurality of arc-shaped protrusions, which are evenly distributed and adjacent to each other.
6. The automotive taillight with a thick-walled light guide according to claim 1, characterized in that, The light source assembly (100) includes a mounting plate (110) and a plurality of light-emitting beads (120), wherein the plurality of light-emitting beads (120) are disposed on the mounting plate (110) and the light-emitting beads (120) are disposed facing the first light-incident surface (210).
7. The automotive taillight with a thick-walled light guide according to claim 6, characterized in that, Both the first thick-walled component (200) and the second thick-walled component (300) are elongated. The first thick-walled component (200) and the second thick-walled component (300) are arranged in parallel. The mounting plate (110) is also elongated. The mounting plate (110) is arranged in parallel with the first thick-walled component (200). A plurality of light-emitting beads (120) are evenly spaced along the length direction of the mounting plate (110).
8. The automotive taillight with a thick-walled light guide according to claim 6, characterized in that, The device includes a mounting bracket (400) having a first plate (410) and a second plate (420) that are perpendicular to each other. The first plate (410) is provided with a mounting groove (411) located on the side of the first plate (410) facing the second plate (420). The mounting plate (110) is fitted into the mounting groove (411).
9. The automotive taillight with a thick-walled light guide according to claim 1, characterized in that, The second light-emitting surface (320) is provided with a graphic layer, which has multiple hollowed-out parts to form the pattern.
10. A car, characterized in that, Automotive taillights including the thick-walled light guides according to any one of claims 1 to 9.