Novel thick-wall light guide structure and vehicle lamp

Abstract

The utility model relates to the technical field of light guides, in particular to a novel thick-wall light guide structure and a vehicle lamp, the novel thick-wall light guide structure comprises a light guide body, the light guide body comprises a light guide part and a thick-wall part, and the tail ends of the light guide part and the thick-wall part are provided with the same mounting slope; the bottom surface of the light guide part is a light inlet surface and is fixedly connected with light guide teeth, and the mounting inclined surface is vertically arranged above the light inlet surface; the top of the light guide part is fixedly connected with the side part of the thick-wall part; the side face of the connecting position of the thick wall part and the light guide part is the front side face, the other side face is the rear side face, the front side face is obliquely arranged, the highest end of the front side face is closer to the rear side face than the lowest end, the front side face is located over the light inlet face, and the rear side face is the light outlet face. The car lamp comprises the novel thick-wall light guide structure. The light guide has the effect of improving the phenomena of brightness and uneven brightness appearing at the tail end of the light guide.

Description

Technical Field

[0001] This application relates to the field of light guide technology, and in particular to a novel thick-walled light guide structure and automotive lamp. Background Technology

[0002] With the continuous development of science and technology, the automotive manufacturing industry is also constantly innovating, resulting in more energy-efficient, environmentally friendly, and intelligent products. As an essential component of automobiles, vehicle lights are subject to increasingly higher demands. Therefore, in the automotive manufacturing field, the requirements for the uniformity of vehicle lights are becoming increasingly stringent. A light guide is a structural component that directs the light emitted by an LED from the PCB to the front panel or the light-emitting position. This component is generally made of PC or PMMA material and has excellent light-guiding properties. Light guides are also called light pipes or light guide columns.

[0003] In related technologies, refer to Figure 1-3 The headlight includes a frame 7, a lamp cover 8, and a light guide 9. The light guide 9 is mounted on the frame 7, and its end is inclined to form a mounting slope 3. The end of the light guide 9 fits tightly against the headlight's trim ring through the mounting slope 3 to maximize the light-emitting area. The cross-section of the light guide 9 is circular or bulb-shaped. When the cross-section of the light guide 9 is bulb-shaped, the left side of the light guide 9 is arc-shaped to form a light-emitting surface, and the right side is converging away from the light-emitting surface to form a light-incoming surface 11. The light-incoming surface 11 is positioned opposite to the light-emitting surface, and light guide teeth 4 are fixedly connected to the light-incoming surface 11. The light beam enters through the light guide teeth 4, passes directly through the light-emitting surface, and is guided to the front lamp cover 8 to emit light. However, because the end of the light guide 9 is inclined to form a mounting slope 3, when light enters from the direction of the light guide teeth 4, it also shines on the mounting slope 3, refracting and reflecting light, resulting in bright spots. This causes uneven brightness and a brighter appearance at the end of the light guide 9. Utility Model Content

[0004] To improve the phenomenon of excessive brightness and uneven brightness at the end of the light guide, this application provides a novel thick-walled light guide structure and vehicle lamp.

[0005] Firstly, the novel thick-walled optical guide structure provided in this application adopts the following technical solution:

[0006] A novel thick-walled light guide structure includes a light guide body, which comprises a light guide portion and a thick-walled portion. The ends of the light guide portion and the thick-walled portion are provided with the same mounting slope. The bottom surface of the light guide portion is a light-inlet surface and is fixedly connected with light guide teeth. The mounting slope is vertically disposed above the light-inlet surface. The top of the light guide portion is fixedly connected to the side of the thick-walled portion. The side where the thick-walled portion connects to the light guide portion is the front side, and the other side is the rear side. The front side is a total reflection surface and is inclined. The highest end of the front side is closer to the rear side than the lowest end. The front side is located directly above the light-inlet surface, and the rear side is the light-outlet surface.

[0007] Optionally, the angle between the light-inlet surface and the light-outlet surface is 90°, and the tilt angle of the front side is 45°.

[0008] By adopting the above technical solution, the light guide part is hidden below the light-emitting surface area, or flipped above the light-emitting surface area to avoid the light-emitting surface area. Then, the total reflection surface of the thick-walled part is used to reflect the vertically upward light into horizontal light, which is evenly illuminated. The light reflected from the end of the light guide body cannot pass through the total reflection surface due to the change of light angle, and is not placed in the light-emitting area. The bright spots formed are also blocked by the decorative ring. Therefore, the problems of reflection at the end of the light guide body and direct visibility of the light guide teeth are improved, resulting in better uniformity.

[0009] Optionally, the outer side of the front side is provided with a pattern.

[0010] Optionally, the outer side of the rear side is provided with a pattern.

[0011] By adopting the above technical solution, the light guide body, through precise design and processing, can control the direction of light propagation, achieving effective light transmission and illuminating the vehicle lights. During the illumination process, light travels from the light guide section to the front side of the thick-walled section, and then exits from the front side. Adjustments can be made as needed, such as adding patterns to the front and rear sides of the thick-walled section to control utilization efficiency, offering high flexibility and greater optical advantages.

[0012] Optionally, a connecting section is provided between the light guide portion and the thick-walled portion, and the light guide portion and the thick-walled portion are connected by the connecting section.

[0013] By adopting the above technical solution, the connection between the light guide part and the thick-walled part is facilitated.

[0014] Optionally, the light guide portion, the thick-walled portion, and the connecting section are integrally formed.

[0015] By adopting the above technical solution, the thick-walled part and the light guide part are integrated, which improves uniformity and stability.

[0016] Secondly, the vehicle light provided in this application adopts the following technical solution:

[0017] A vehicle headlight includes the aforementioned novel thick-walled light guide structure. The lighting effect achievable based on this structure is as follows.

[0018] In summary, this application includes at least one of the following beneficial technical effects:

[0019] 1. The thick-walled section and the light guide section are integrated into one unit, achieving integrated design and manufacturing, which improves uniformity and stability;

[0020] 2. The utilization efficiency can be controlled by adjusting the patterns on the front and rear sides of the thick-walled section, offering high flexibility;

[0021] 3. Improves the reflection problem at the end of the optical guide body; simple structure and low cost;

[0022] 4. The light guide structure of this application can be applied to vehicle lights, thereby achieving the lighting effect of vehicle lights. Attached Figure Description

[0023] Figure 1 This is a structural diagram used to illustrate the vehicle headlights in the background technology.

[0024] Figure 2 This is a schematic diagram illustrating the structure of light guide refraction and reflection at the end in the background technology.

[0025] Figure 3 This is a schematic diagram of the structure of the end of a light guide used to illustrate the background technology.

[0026] Figure 4 This is a top view of a novel thick-walled optical guide structure according to an embodiment of this application.

[0027] Figure 5 This is a schematic diagram of the structure used to display the front side after the pattern is hidden in the embodiment of this application.

[0028] Figure 6 This is a schematic diagram of the structure used to display the light guide teeth after the pattern is hidden in the embodiment of this application.

[0029] Figure 7 This is a schematic diagram of the structure used to display the pattern in the embodiments of this application.

[0030] Explanation of reference numerals in the attached drawings: 1. Light guide section; 11. Light intake surface; 2. Thick wall section; 21. Front side; 22. Rear side; 3. Mounting slope; 4. Light guide teeth; 5. Pattern; 6. Connecting section; 7. Frame; 8. Lampshade; 9. Light guide. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 4-7This application will be described in further detail.

[0032] Firstly, embodiments of this application disclose a novel thick-walled optical guide structure. (Refer to...) Figure 4-6 The novel thick-walled light guide structure includes a light guide body, which comprises a light guide portion 1 and a thick-walled portion 2. Both the light guide portion 1 and the thick-walled portion 2 have the same mounting bevel 3 at their ends. The bottom surface of the light guide portion 1 is a light-inlet surface 11 and is fixedly connected to light guide teeth 4. The mounting bevel 3 is vertically positioned above the light-inlet surface 11. The top of the light guide portion 1 is fixedly connected to the side of the thick-walled portion 2. The side where the thick-walled portion 2 connects to the light guide portion 1 is the front side 21, and the other side is the rear side 22. The front side 21 is a total reflection surface and is inclined. The highest point of the front side 21 is closer to the rear side 22 than the lowest point. The front side 21 is located directly above the light-inlet surface 11, and the rear side 22 is the light-outlet surface. The angle between the light-inlet surface 11 and the light-outlet surface is 90°, and the inclination angle of the front side 21 is 45°.

[0033] By adopting the above technical solution, the light guide part 1 is hidden below the light-emitting surface area, or flipped above the light-emitting surface area to avoid the light-emitting surface area. Then, the total reflection surface of the thick-walled part 2 is used to reflect the vertically upward light into horizontal light, which is evenly illuminated. The light reflected from the end of the light guide body cannot pass through the total reflection surface due to the change of light angle, and is not placed in the light-emitting area. The bright spots formed are also blocked by the decorative ring. Therefore, the problems of reflection at the end of the light guide body and direct visibility of the light guide teeth are improved, resulting in better uniformity.

[0034] Reference Figure 7 The outer side of the front side 21 and the outer side of the rear side 22 are provided with patterns 5. The type and size of the patterns 5 can be selected and set according to the actual situation. In this embodiment, the patterns 5 are uniformly arrayed waves. Through precise design and processing, the light guide body can control the direction of light propagation and achieve effective light transmission, using the light guide body to illuminate the vehicle headlights. During the illumination process, light is transmitted from the light guide part 1 to the front side 21 of the thick-walled part 2, and then emitted from the front side 21. Adjustments can also be made according to requirements, adding patterns 5 to the front side 21 and rear side 22 of the thick-walled part 2 to control utilization efficiency, which is highly flexible and more beneficial to optics.

[0035] Reference Figure 5-7 A connecting section 6 is provided between the light guide portion 1 and the thick-walled portion 2, and the light guide portion 1 and the thick-walled portion 2 are connected by the connecting section 6, which facilitates the connection between the light guide portion 1 and the thick-walled portion 2. The light guide portion 1, the thick-walled portion 2 and the connecting section 6 are integrally formed, and the thick-walled portion 2 and the light guide portion 1 are integrated, which improves uniformity and stability.

[0036] Secondly, the vehicle light provided in this application adopts the following technical solution:

[0037] A vehicle headlight includes the aforementioned novel thick-walled light guide structure. The lighting effect achievable based on this structure is as follows.

[0038] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A novel thick-walled optical guide structure, characterized in that: The light guide body includes a light guide portion (1) and a thick-walled portion (2). The ends of the light guide portion (1) and the thick-walled portion (2) are provided with the same mounting slope (3). The bottom surface of the light guide portion (1) is the light-inlet surface (11) and is fixedly connected with light guide teeth (4). The mounting slope (3) is vertically arranged above the light-inlet surface (11). The top of the light guide portion (1) is fixedly connected to the side of the thick-walled portion (2). The side where the thick-walled portion (2) connects to the light guide portion (1) is the front side surface (21), and the other side surface is the rear side surface (22). The front side surface (21) is a total reflection surface and is inclined. The highest end of the front side surface (21) is closer to the rear side surface (22) than the lowest end. The front side surface (21) is located directly above the light-inlet surface (11), and the rear side surface (22) is the light-outlet surface.

2. The novel thick-walled optical guide structure according to claim 1, characterized in that: The angle between the light-inlet surface (11) and the light-outlet surface is 90°, and the tilt angle of the front side surface (21) is 45°.

3. A novel thick-walled optical guide structure according to claim 1 or 2, characterized in that: The outer side of the front side (21) is provided with a pattern (5).

4. A novel thick-walled optical guide structure according to claim 1 or 2, characterized in that: The outer side of the rear side (22) is provided with a pattern (5).

5. A novel thick-walled optical guide structure according to claim 1 or 2, characterized in that: A connecting section (6) is provided between the light guide part (1) and the thick wall part (2), and the light guide part (1) and the thick wall part (2) are connected by the connecting section (6).

6. A novel thick-walled optical guide structure according to claim 5, characterized in that: The light guide section (1), the thick-walled section (2), and the connecting section (6) are integrally formed.

7. A vehicle light, characterized in that: The novel thick-walled optical guide structure includes any one of claims 1-6.

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