Light guide structure for improving tail end bright spots and vehicle lamp

Abstract

The utility model relates to the technical field of vehicle lamps, in particular to a light guide structure for improving tail end bright spots and a vehicle lamp. A light guide structure for improving bright spots at the tail end comprises a light guide body, the light guide body is of a cylindrical structure with the two ends provided with radians, one end of the light guide body is a light inlet end, the light inlet end is provided with a light gathering structure, the other end of the light guide body is connected with a black metal piece, the heat conductivity coefficient of the black metal piece is 1.31-4.82 W / m.k, one side face of the light guide body is a light outlet face, and the other side face of the light guide body is a light outlet face. And a dimming structure is arranged on the side surface opposite to the light emitting surface. According to the utility model, the tail end of the light guide piece is connected with the black metal piece with a higher heat conductivity coefficient, so that heat can be radiated quickly while shading is carried out, the heat radiation area at the position is increased, the fusing risk is further reduced, the safety is ensured, and the problem of bright spots at the tail end is improved; in addition, the LED lamp is even in lighting and attractive in appearance. Machining is convenient, and cost is low.

Description

TECHNICAL FIELD

[0001] The utility model relates to car light technical field especially a light guide structure of improvement end bright spot and car light. BACKGROUND

[0002] With the rapid development of car light technology, and the pursuit of car light lighting effect of consumers is higher and higher, production cost and efficiency are also the urgent problems of each car light supplier. In the prior art, after the light is emitted from the LED, part of the light passes through a series of action devices such as light guide / light guide plate, and is emitted from the light emitting surface after total reflection / refraction, and the other part of the light is directly transmitted from the light entering end to the end, so as to achieve the effect of more uniform car light lighting. The car light assembly has a plurality of components around the light emitting body such as light source or light guide, and there is a part overlapping each other between the components, and the light guide end is painted black / painted with paint by using the light shielding of decorative ring / housing and other components, so as to block the light from the light emitting body from being emitted outward through the gap, thereby avoiding light leakage and improving the lighting effect of the car light. However, since the light guide end is coated with black material, it continuously absorbs energy, which causes the heat to be unable to dissipate, and thus there is a risk of melting and safety hazards. SUMMARY

[0003] The technical problem to be solved by the utility model is to solve the problems of the prior art in the background, and provide a light guide structure for improving end bright spot.

[0004] The utility model adopts the technical scheme that a light guide structure for improving end bright spot, including light guide body, the light guide body is the cylindrical structure with the arc at both ends, its one end is the light entering end, the light entering end is equipped with the light collecting structure, the other end of light guide body is connected with black metal piece, the heat conductivity coefficient of black metal piece is 1.31~4.82W / m·k, and the side surface of light guide body is the light emitting surface, and the side surface opposite to the light emitting surface is equipped with light adjusting structure.

[0005] Further, the light adjusting structure is a tooth-like structure or a spherical structure. In this way, the total reflection of light in the light guide body can be destroyed, and the light can be emitted from the light emitting surface.

[0006] As another technical means, the light adjusting structure is a layer of white reflective material.

[0007] Further, the material of the black metal piece is anodized aluminum.

[0008] Further, a mounting structure is provided near the light entering end, and the mounting structure is a stepped block.

[0009] Further, a horizontal stripe structure is provided on the light emitting surface.

[0010] Further, the ferrous metal piece is in a sheet structure, and a longitudinal section thereof is in a trapezoidal shape.

[0011] Further, the ferrous metal piece is in a sheet structure, and a longitudinal section thereof is in a trapezoidal shape.

[0012] Further, the ferrous metal piece is in a sheet structure, and a longitudinal section thereof is in a trapezoidal shape.

[0013] Further, the ferrous metal piece is in a sheet structure, and a longitudinal section thereof is in a trapezoidal shape.

[0014] The beneficial effects of the present application are as follows:

[0015] The present application connects the ferrous metal piece with high heat conductivity at the end of the light guide, which can radiate heat quickly while shielding light, increase the heat dissipation area, reduce the risk of burning and melting, ensure safety, and improve the end bright spot problem. BRIEF DESCRIPTION OF DRAWINGS

[0016] The present application will be further described below in combination with the drawings and examples.

[0017] Figure 1 is a structural schematic view of the first embodiment of the present application.

[0018] Figure 2 is Figure 1 a structural schematic view in another direction.

[0019] Figure 3 is Figure 2 a structural schematic view in another direction.

[0020] Figure 4 is Figure 1 a front view of the present application.

[0021] Figure 5 is Figure 1 a rear view of the present application.

[0022] Figure 6 is a structural schematic view of the second embodiment of the present application.

[0023] Figure 7 is a lighting effect diagram of the first and second embodiments of the present application.

[0024] In the drawings: 1, light guide; 11, light inlet end; 12, mounting structure; 13, light outlet surface; 14, light adjusting structure; 2, ferrous metal piece; 21, extension section; 211, mounting hole. DETAILED DESCRIPTION

[0025] The utility model will be further explained in detail in connection with the drawings. These drawings are all simplified schematic diagrams, and only schematically show the basic structure of the utility model, so they only show the components related to the utility model.

[0026] Embodiment one

[0027] As Figures 1 to 5 shown, a light guide structure for improving end bright spots includes a light guide body 1, which is a cylindrical structure with an arc at both ends, one end of which is a light inlet end 11, which is provided with a light collecting structure, and the other end of the light guide body 1 is connected with a black metal piece 2, the thermal conductivity of the black metal piece 2 is 1.31-4.82 W / m·k, and one side surface of the light guide body 1 is a light outlet surface 13, and the side surface opposite to the light outlet surface 13 is provided with a light adjusting structure 14.

[0028] In this embodiment, the light guide body 1 is not limited to a cylindrical structure, but can also be other shapes, and the material thereof is transparent PMMA or PC, etc. The light adjusting structure 14 is a tooth-shaped structure or a spherical structure, and a white reflective material layer can also be directly coated. The light collecting structure is a circular ring structure, and other light collecting forms can be designed according to actual application requirements. A mounting structure 12 is arranged near the light inlet end 11, and the mounting structure 12 is a stepped block. A horizontal stripe structure is arranged on the light outlet surface 13, and other light distribution pattern shapes or smooth surfaces can be designed according to actual application requirements. The material of the black metal piece 2 can be anodized aluminum, the black metal piece 2 is in a sheet shape, has an extension section 21 extending along the axial direction of the light guide body 1, and the extension section 21 is provided with a mounting hole 211; preferably, the overhanging end of the extension section 21 forms a rounded end.

[0029] Embodiment two

[0030] As Figure 6 shown, the black metal piece 2 is in a sheet structure, and the longitudinal section thereof is in a trapezoidal shape.

[0031] Working principles of embodiment one and embodiment two: LED light is collected by the light collecting structure, refracted into the light guide body 1 through the light inlet end 11, a part of the light is refracted out of the light outlet surface 13 after multiple total reflection / reflection through the light adjusting structure 14; another part of the light, i.e. the light generating bright spots in the prior art, is absorbed by the black metal piece 2 at the end, and then converted into heat energy and radiated in the air. The design of the black metal piece 2 at the end can be performed according to the assembly relationship between each part and the modeling space.

[0032] A car lamp adopts the light guide structure for improving end bright spots of embodiment one or embodiment two, and as Figure 7 shown, the light-on effect diagram, the whole light guide body 1 has good visual effect and is evenly lighted on.

[0033] With the above ideal embodiment of the present application as the inspiration, through the above description, relevant staff can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the content in the specification, and the technical scope must be determined according to the scope of claims.

Claims

1. A light guide structure for improving end bright spot comprising a light guide body (1), characterized in that: The light guide body (1) is a cylindrical structure with arc at both ends, one end of which is a light inlet end (11) provided with a light collecting structure, and the other end of which is connected with a black metal piece (2) having a thermal conductivity of 1.31-4.82 W / m﹒k, one side of the light guide body (1) being a light outlet surface (13) and the opposite side being provided with a light adjusting structure (14).

2. The light directing structure to improve end spot according to claim 1, wherein: The light adjusting structure (14) is a tooth-like structure or a spherical structure.

3. The light directing structure to improve end spot according to claim 1, wherein: The light adjusting structure (14) is a layer of white reflective material.

4. The light directing structure to improve end spot according to claim 1, wherein: The black metal piece (2) is made of anodized aluminum.

5. The light directing structure to improve end spot according to claim 1, wherein: A mounting structure (12) is arranged near the light inlet end (11), and the mounting structure (12) is a stepped block.

6. The light directing structure to improve end spot according to claim 1, wherein: The light outlet surface (13) is provided with a horizontal stripe structure.

7. The light directing structure to improve end spot according to claim 1, wherein: The black metal piece (2) is in a sheet-like structure, and its longitudinal section is in a trapezoidal shape.

8. The light directing structure to improve end spot according to claim 1, wherein: The black metal piece (2) is in a sheet-like structure, and has an extension section (21) extending along the axial direction of the light guide body (1), and the extension section (21) is provided with a mounting hole (211).

9. The light directing structure to improve end spot according to claim 8, wherein: The free end of the extension section (21) is formed into a rounded end.

10. A vehicle light, characterized by: A light guide structure for improving end bright spot as claimed in any one of claims 1-9.

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