Thick-walled light guide for automotive tail light

Abstract

The utility model discloses a kind of thick-wall light guides for automobile tail light, including integrally-formed thick-wall light guide body, reflector, first light uniform surface and second light uniform surface, and the reflector is also integrally-formed with reflecting bowl on, and the thick-wall light guide body is separated from the reflector by the second light uniform surface. Since thick-wall light guide is integrated structure, so the connecting structure between reflector and thick-wall light guide body is reduced, thereby it is favorable to save space, so that the degree of freedom of lamp design becomes higher. Reflector and thick-wall light guide body are integrally formed by injection molding, avoid the gap between reflector and thick-wall light guide body, light can be directly into the first light uniform surface of thick-wall light guide body from the reflection of reflecting bowl after the reflection of reflector, by thick-wall light guide body, spread out through second light uniform surface, avoid the loss of light irradiation to other areas through the gap between reflector and thick-wall light guide body in the middle, to improve the utilization of light.

Description

Technical Field

[0001] This utility model relates to the field of automotive lighting technology, specifically a thick-walled light guide for automotive taillights. Background Technology

[0002] Traditionally, the thick-walled light guide and reflector are separate injection-molded parts. The reflective surface of the reflector has an aluminum coating, while the thick-walled light guide is made of transparent PC material. The two are connected together by snap-fit ​​connections or screws. For example, the existing technology with publication number CN210624429U uses an assembly method of transparent thick-walled light guide and reflector to achieve this function. This method has the following drawbacks: First, because it requires the assembly of two parts, an assembly structure needs to be designed, occupying a large space. Second, because it is an assembly structure, gaps between the two parts cannot be avoided, resulting in low optical efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a thick-walled light guide for automotive taillights to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a thick-walled light guide for automotive taillights, comprising an integrally formed thick-walled light guide body, a reflector, a first light-averaging surface and a second light-averaging surface, wherein the reflector is also integrally formed with a reflector bowl, and the thick-walled light guide body is separated from the reflector by the first light-averaging surface.

[0005] As a preferred technical solution of this utility model: the thick-walled light guide body is made of transparent PC material, and the reflector is made of black PC material, and the thick-walled light guide body and the reflector are integrally formed by a two-color injection molding process.

[0006] As a preferred technical solution of this utility model, the reflector is also coated with an aluminum coating.

[0007] As a preferred technical solution of this utility model: the number of the reflector bowls is multiple, and they are distributed along the length direction of the reflector.

[0008] As a preferred technical solution of this utility model: the reflector bowl includes an inclined surface and an arc surface; wherein, the outer end face of the inclined surface is flush with the outer end face of the arc surface.

[0009] As a preferred technical solution of this utility model: between any two adjacent reflector bowls, one end of the inclined surface is connected to the upper end of the arc surface of one of the reflector bowls, and the other end of the inclined surface is connected to the bottom end of the arc surface of the other reflector bowl.

[0010] As a preferred technical solution of this utility model: a first mounting seat is provided on one side of the reflector and a second mounting seat is provided on the other side of the reflector; wherein, the first mounting seat and the second mounting seat are both located below the reflector bowl.

[0011] As a preferred embodiment of this utility model, a third mounting base is further provided between the first mounting base and the second mounting base.

[0012] As a preferred technical solution of this utility model: the outer sides of the first mounting base, the second mounting base and the third mounting base are all provided with reinforcing ribs.

[0013] As a preferred technical solution of this utility model, the cross-section of the reinforcing rib is cross-shaped.

[0014] The beneficial effects of this utility model by adopting the above technical solution are: 1. Since the thick-walled light guide is an integrated structure, the connection structure between the reflector and the thick-walled light guide body is reduced, which helps to save space and makes the design of the lamp more flexible.

[0015] 2. The reflector and the thick-walled light guide body are integrally formed by injection molding, which avoids the gap between the reflector and the thick-walled light guide body. Light can directly enter the first light-averaging surface of the thick-walled light guide body from the reflector through the reflection bowl, and then propagate out through the second light-averaging surface of the thick-walled light guide body. This avoids the loss of light that would otherwise be lost by passing through the gap between the reflector and the thick-walled light guide body and illuminating other areas, thereby improving the light utilization rate. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model.

[0017] In the figure: 1. Thick-walled light guide body; 2. Reflector; 3. Reflector bowl; 30. Inclined surface; 32. Arc surface; 4. First light-diffusing surface; 5. Second light-diffusing surface; 6. First mounting base; 7. Second mounting base; 8. Third mounting base; 9. Reinforcing rib. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these 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 intended to explain this utility model, and should not be construed as limiting this utility model. In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "upper surface," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as limiting this utility model.

[0019] Please see Figure 1 The present invention provides an embodiment of a thick-walled light guide for automotive taillights, comprising an integrally formed thick-walled light guide body 1, a reflector 2, a first light-averaging surface 4, and a second light-averaging surface 5. The reflector 2 is also integrally formed with a reflector bowl 3, and the thick-walled light guide body 1 and the reflector 2 are separated by the first light-averaging surface 4.

[0020] In summary, because the thick-walled light guide is a one-piece structure, the connection structure between the reflector and the thick-walled light guide body 1 is reduced, which helps to save space and allows for greater freedom in lamp design. At the same time, the reflector 2 and the thick-walled light guide body 1 are integrally formed by injection molding, avoiding gaps between them. Light can directly enter the first light-diffusing surface 4 of the thick-walled light guide body 1 from the reflector 2 via the reflector bowl 3, and then propagate through the second light-diffusing surface 5. This avoids light loss by passing through gaps between the reflector 2 and the thick-walled light guide body 1 and illuminating other areas, thus improving light utilization.

[0021] Specifically, the thick-walled light guide body 1 is made of transparent PC material, and the reflector 2 is made of black PC material. The thick-walled light guide body 1 and the reflector 2 are integrally molded using a two-color injection molding process. That is, by injecting two different colors or materials of plastic into a mold within the same production cycle, products with two-color or multi-color effects are formed. This technology achieves seamless integration and enhances both aesthetics and functionality.

[0022] Furthermore, since the reflector 2 is also coated with an aluminum coating, the aluminum coating can be used to improve the reflectivity of the reflector 2. Specifically, when coating with aluminum, a masking aluminum coating process is used, that is, the aluminum coating is only applied to the reflector 2 and the other parts are not coated with aluminum.

[0023] To improve the light utilization effect of the reflector bowl 3, there are multiple reflector bowls 3, which are distributed along the length direction of the reflector 2.

[0024] Furthermore, the reflector bowl 3 includes an inclined surface 30 and an arc surface 31; wherein the outer end face of the inclined surface 30 is flush with the outer end face of the arc surface 31.

[0025] Specifically, between any two adjacent reflector bowls 3, one end of the inclined surface 31 is connected to the upper end of the arc surface 31 of one of the reflector bowls 3, and the other end of the inclined surface 31 is connected to the bottom end of the arc surface 31 of the other reflector bowl 3.

[0026] In summary, by arranging the reflector bowl 3 in the above manner and optimizing its own structure, namely by using the combination of the inclined surface 30 and the arc surface 31, the light utilization effect can be improved.

[0027] Based on the above solution, since a first mounting base 6 is provided on one side of the reflector 2 and a second mounting base 7 is provided on the other side of the reflector 2, and both the first mounting base 6 and the second mounting base 7 are located below the reflector bowl 3, it is convenient for fasteners to pass through the first mounting base 6 and the second mounting base 7 and connect to the lamp housing to fix the light guide body 1.

[0028] Furthermore, since a third mounting base 8 is provided between the first mounting base 6 and the second mounting base 7, the bottom of the light guide body 1 can be reliably fixed, thus preventing the light guide body 1 from becoming loose during use.

[0029] In addition, since the light guide body 1 will be subjected to vibration from the vehicle during use, the outer sides of the first mounting base 6, the second mounting base 7 and the third mounting base 8 are all provided with reinforcing ribs 9; the cross-section of the reinforcing rib 9 is cross-shaped, so the cross-shaped reinforcing rib 9 is used to reduce the phenomenon of damage to the light guide body 1 caused by vibration.

[0030] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A thick-walled light guide for automotive taillights, characterized in that: It includes an integrally formed thick-walled light guide body (1), a reflector (2), a first light-diffusing surface (4) and a second light-diffusing surface (5), and the reflector (2) is also integrally formed with a reflector bowl (3), and the thick-walled light guide body (1) and the reflector (2) are separated by the first light-diffusing surface (4).

2. The thick-walled light guide for automotive taillights according to claim 1, characterized in that: The thick-walled light guide body (1) is made of transparent PC material, and the reflector (2) is made of black PC material. The thick-walled light guide body (1) and the reflector (2) are integrally formed by a two-color injection molding process.

3. A thick-walled light guide for automotive taillights according to claim 2, characterized in that: The reflector (2) is also coated with an aluminum coating.

4. A thick-walled light guide for automotive taillights according to claim 3, characterized in that: The number of the reflector bowls (3) is multiple, and they are distributed along the length of the reflector (2).

5. A thick-walled light guide for automotive taillights according to claim 4, characterized in that: The reflector bowl (3) includes an inclined surface (30) and an arc surface (31); wherein the outer end face of the inclined surface (30) is flush with the outer end face of the arc surface (31).

6. A thick-walled light guide for automotive taillights according to claim 5, characterized in that: Between any two adjacent reflector bowls (3), one end of the inclined surface (30) is connected to the upper end of the arc surface (31) of one of the reflector bowls (3), and the other end of the inclined surface (30) is connected to the bottom end of the arc surface (31) of the other reflector bowl (3).

7. A thick-walled light guide for automotive taillights according to any one of claims 1-6, characterized in that: The reflector (2) has a first mounting base (6) on one side and a second mounting base (7) on the other side; wherein the first mounting base (6) and the second mounting base (7) are both located below the reflector bowl (3).

8. A thick-walled light guide for automotive taillights according to claim 7, characterized in that: A third mounting base (8) is provided between the first mounting base (6) and the second mounting base (7).

9. A thick-walled light guide for automotive taillights according to claim 8, characterized in that: The outer sides of the first mounting base (6), the second mounting base (7) and the third mounting base (8) are all provided with reinforcing ribs (9).

10. A thick-walled light guide for automotive taillights according to claim 9, characterized in that: The cross-section of the reinforcing rib (9) is cross-shaped.

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