A light guide assembly for a vehicle lamp

Abstract

This utility model discloses a light guide component for automotive lights. The component includes a light guide tube embedded in the automotive light, multiple light-emitting elements, and a light guide tube heat sink. The light guide tube is located around the lens of the light headlight, with a light-transmitting hole on its inner side for the light-emitting end of the light-emitting element to pass through, allowing light to be evenly emitted around the light headlight. The light-emitting element consists of a lamp bead bracket and LED beads, fixed at the light-transmitting hole. In the light guide tube heat sink, a copper heat-conducting block contacts the adjacent lamp bead brackets on its left and right sides, and its inner side contacts the inner side of the light guide tube, absorbing heat from the light-emitting elements and the light guide tube. Its internal vent holes increase the contact area with air, promoting heat dissipation. A titanium heat-conducting plate is fixed inside the copper heat-conducting block, and heat exchange fins are located on the side of the titanium heat-conducting plate away from the copper heat-conducting block, increasing the heat dissipation area. Thermal grease is applied between the copper heat-conducting block and the heat exchange fins to enhance heat conduction, effectively controlling the internal temperature of the light headlight and extending the component's lifespan.

Description

Technical Field

[0001] This utility model relates to the field of automotive light guide accessories technology, specifically to a light guide component for automotive lights. Background Technology

[0002] In the field of automotive lighting, the lighting effect and heat dissipation performance of headlights have always been key issues. Traditional headlights often struggle to achieve uniform ambient lighting through their light transmission methods. Some headlights rely solely on simple bulbs, resulting in a scattered light distribution and uneven brightness. It is difficult to form a continuous and uniform light band around the headlight lens, which not only affects the aesthetics of the car but also reduces nighttime driving safety to some extent. For example, when turning or in complex road conditions, uneven lighting may fail to illuminate the surrounding environment in time, creating blind spots for the driver.

[0003] Meanwhile, automotive lights generate a significant amount of heat during operation, especially those using LED chips as the light source. While LED chips offer advantages such as energy efficiency and long lifespan, they generate considerable heat when operating at high brightness. Traditional automotive light heat dissipation structures are typically simple, relying heavily on the metal casing of the lamp body for natural heat dissipation, resulting in low efficiency. Inability to dissipate heat promptly leads to increased LED chip temperatures, affecting luminous efficiency and lifespan, accelerating light decay, and potentially causing chip damage due to overheating, thus increasing maintenance costs and replacement frequency. Therefore, developing a light guide component for automotive lights that can achieve both uniform ambient lighting and effective heat dissipation is of significant practical importance. Utility Model Content

[0004] The purpose of this utility model is to provide a technical solution for a light guide component for automotive lights, thereby addressing the shortcomings mentioned in the background art. To overcome the drawbacks and defects described in the background art, this technical solution includes the following: It includes a light guide tube embedded in a car headlight, wherein multiple light-emitting elements are installed at equal intervals around the inner surface of the light guide tube, and multiple light-emitting elements are fixedly connected to each other by multiple light guide tube heat sinks; The light guide component includes a thick-walled light guide embedded and fixed in the vehicle light, and a light-transmitting hole opened on the inner surface of the thick-walled light guide for the light-emitting end of the light-emitting element to pass through. The light-emitting component includes a lamp bead bracket and LED lamp beads embedded and fixed inside the lamp bead bracket; The light guide heat sink includes a copper heat-conducting block, a titanium heat-conducting plate fixed on the inner surface of the copper heat-conducting block, and several heat exchange fins fixed at equal intervals on the side of the titanium heat-conducting plate away from the copper heat-conducting block; the copper heat-conducting block has multiple vent holes inside.

[0005] As a preferred embodiment of this utility model: the thick-walled light guide is disposed around the periphery of the headlight lens and surrounds the headlight.

[0006] As a preferred embodiment of this utility model: the interior of the car headlight is provided with a reserved cavity for the installation of the light guide component, the light-emitting component and the light guide heat sink component.

[0007] As a preferred embodiment of this utility model, the outer surface edges of the thick-walled optical guide are all rounded and chamfered.

[0008] As a preferred embodiment of this utility model: the end face of the lamp bead bracket near the thick-walled light guide tube is fixed to the edge of the light-transmitting hole by adhesive.

[0009] As a preferred embodiment of this utility model: the left and right sides of the copper heat-conducting block are in contact with the side of the lamp bead bracket that is close to each other, for absorbing the heat emitted by the light-emitting element; the side of the copper heat-conducting block that is close to the thick-walled light guide tube is in contact with the inner surface of the thick-walled light guide tube, for absorbing the heat inside the thick-walled light guide tube.

[0010] As a preferred embodiment of this utility model, the vent hole is used to increase the contact surface area between the copper heat-conducting block and the air inside the vehicle headlight.

[0011] As a preferred embodiment of this utility model, the copper heat-conducting block and the heat exchange fins are both coated with a layer of thermally conductive silicone grease on the side that is close to each other.

[0012] The technical effects and advantages provided by this utility model in the above technical solution are as follows: The light guide component of this automotive headlight uses a thick-walled light guide tube arranged around the periphery of the headlight lens, with light transmission holes. This allows the light from the LED beads in the light-emitting element to enter the thick-walled light guide tube through the light transmission holes and then be evenly conducted out, achieving a stable illumination effect around the headlight and improving illumination uniformity. The heat generated by the light-emitting element during operation is conducted through the bead bracket to the copper heat-conducting block. Simultaneously, heat from inside the thick-walled light guide tube is also conducted to the copper heat-conducting block. The copper heat-conducting block increases its contact area with air through vent holes, promoting convection heat dissipation. The heat is then dispersed to the heat exchange fins via a titanium heat-conducting plate. The heat exchange fins increase the heat dissipation area and improve heat exchange efficiency. Furthermore, thermal grease is applied between the copper heat-conducting block and the heat exchange fins to eliminate gaps and enhance heat conduction. This allows for the rapid dissipation of heat generated by the LED beads and the thick-walled light guide tube, effectively controlling the internal temperature of the headlight, preventing component performance degradation or damage due to overheating, and extending the component's lifespan. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0014] Figure 1 A schematic diagram of the overall headlight guide for a vehicle; Figure 2 An exploded view of the headlight guide; Figure 3 This is a schematic diagram of a light-emitting component; Figure 4 This is a schematic diagram of a light pipe heat sink.

[0015] Explanation of reference numerals in the attached figures: 1. Light guide components; 1-1. Thick-walled light guide; 1-2. Light transmission hole; 2. Light-emitting component; 2-1. Lamp bead bracket; 2-2. LED lamp bead; 3. Light guide heat dissipation component; 3-1. Copper heat conduction block; 3-2. Ventilation hole; 3-3. Titanium heat conduction plate; 3-4. Heat exchange fins. Detailed Implementation

[0016] To provide a clearer explanation and illustration of the technical solution and implementation of this utility model, several preferred specific embodiments for implementing the technical solution of this utility model are described below. The following description is merely exemplary and not intended to limit the scope, application, or use of this disclosure. It should be understood that in all these drawings, the same or similar reference numerals indicate the same or similar parts and features. The various drawings only schematically illustrate the concept and principle of the embodiments of this disclosure and do not necessarily show the specific dimensions and proportions of the various embodiments of this disclosure. The technical solution of this utility model will be clearly and completely described below in conjunction with embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model.

[0017] This embodiment provides a light guide assembly for automotive lights, comprising a light guide 1, multiple light-emitting elements 2, and multiple light guide heat sinks 3 embedded within an automotive light. The light guide 1 surrounds the lens of the automotive light, forming a thick-walled light guide 1-1 structure. Its inner surface has a ring of equally spaced light-transmitting holes 1-2 for the light-emitting ends of the light-emitting elements 2 to pass through. The outer edges of the thick-walled light guide 1-1 are rounded to improve assembly compatibility and reduce light refraction interference. The automotive light has a pre-reserved cavity inside to accommodate the installation of the light guide 1, the light-emitting elements 2, and the light guide heat sinks 3. The light-emitting element 2 consists of a lamp bead bracket 2-1 and LED lamp beads 2-2, with the LED lamp beads 2-2 embedded and fixed inside the lamp bead bracket 2-1. The end face of the lamp bead bracket 2-1 near the thick-walled light guide 1-1 is fixed to the edge of the light-transmitting hole 1-2 using adhesive, ensuring that the light-emitting end is aligned with the light-transmitting hole 1-2 for efficient light transmission. Multiple light-emitting elements 2 are arranged at equal intervals along the inner surface of the thick-walled light guide tube 1-1, and adjacent light-emitting elements 2 are fixedly connected by the heat dissipation component 3 of the light guide tube to form an overall heat dissipation structure.

[0018] The light guide heat sink 3 consists of a copper heat-conducting block 3-1, a titanium heat-conducting plate 3-3, and heat exchange fins 3-4. The left and right sides of the copper heat-conducting block 3-1 contact the sidewalls of the adjacent LED bead bracket 2-1 to absorb heat generated by the light-emitting element 2. Simultaneously, the side of the copper heat-conducting block 3-1 closest to the thick-walled light guide 1-1 contacts the inner surface of the thick-walled light guide 1-1, further absorbing heat from inside the thick-walled light guide 1-1. The titanium heat-conducting plate 3-3 is fixed to the inner surface of the copper heat-conducting block 3-1, with several heat exchange fins 3-4 evenly distributed on its side away from the copper heat-conducting block 3-1, increasing the heat exchange efficiency by increasing the heat dissipation surface area. Multiple ventilation holes 3-2 are formed inside the copper heat-conducting block 3-1, extending through its thickness direction, to increase the contact surface area between the copper heat-conducting block 3-1 and the air inside the headlight, promoting air convection and accelerating heat dissipation. In addition, the contact surfaces of the copper heat-conducting block 3-1 and the heat exchange fins 3-4 are coated with thermal grease to eliminate contact gaps and improve heat conduction efficiency.

[0019] During assembly, firstly, the thick-walled light guide 1-1 is embedded into the reserved cavity surrounding the headlight lens, ensuring that its outer arc chamfer fits snugly against the inner wall of the cavity. Then, the LED bead brackets 2-1 of multiple light-emitting elements 2 are fixed to the edge of the light-transmitting hole 1-2 using adhesive, allowing the light-emitting ends of the LED beads 2-2 to pass through the light-transmitting hole 1-2 and extend into the thick-walled light guide 1-1. Next, the light guide heat sink 3 is installed between adjacent light-emitting elements 2: the left and right sides of the copper heat-conducting block 3-1 are respectively attached to the sidewalls of the adjacent LED bead brackets 2-1, while simultaneously ensuring that the inner surface of the copper heat-conducting block 3-1 contacts the inner surface of the thick-walled light guide 1-1; the titanium heat-conducting plate 3-3 is fixed to the inner side of the copper heat-conducting block 3-1, with the heat exchange fins 3-4 facing the direction of airflow inside the headlight. Finally, the vent hole 3-2 is checked for unobstructed flow, and it is confirmed that thermal grease is evenly applied to the contact surface between the copper heat-conducting block 3-1 and the heat exchange fins 3-4. The light guide component of this vehicle light achieves uniform light transmission through the cooperation of the thick-walled light guide tube 1-1 and the light transmission hole 1-2. By utilizing the synergistic effect of the light-emitting component 2 and the heat dissipation component 3 of the light guide tube, the heat generated by the LED beads 2-2 and the thick-walled light guide tube 1-1 is quickly discharged through the copper heat conduction block 3-1, the titanium heat conduction plate 3-3 and the heat exchange fins 3-4, and the air convection is enhanced through the ventilation hole 3-2, thereby effectively controlling the internal temperature of the vehicle light and extending the service life of the component.

[0020] Based on the above-described preferred technical solution, the workflow of this technical solution is explained as follows: When the light guide assembly of the vehicle headlight is working, the LED beads 2-2 emit light after being powered on. The light enters the interior of the thick-walled light guide tube 1-1 through the light-transmitting hole 1-2. The thick-walled light guide tube 1-1 uses its inner surface structure to refract and conduct the light, so that the light is evenly distributed around the headlight along the thick-walled light guide tube 1-1, and finally shines outward through the outer surface of the thick-walled light guide tube 1-1, forming a lighting effect around the headlight. During operation, the heat generated by the LED beads 2-2 is conducted through the bead bracket 2-1 to the left and right surfaces of the copper heat-conducting block 3-1 in contact with it. At the same time, the heat generated inside the thick-walled light guide tube 1-1 due to light conduction is also conducted through its inner surface to the side surface of the copper heat-conducting block 3-1 in contact with it, which is close to the thick-walled light guide tube 1-1. After absorbing heat, block 3-1 increases its contact surface area with the air inside the headlight through the internal ventilation holes 3-2, promoting air convection to accelerate heat dissipation. At the same time, the heat is conducted to the titanium heat-conducting plate 3-3 fixed on its inner surface. The titanium heat-conducting plate 3-3 further disperses the heat to several heat exchange fins 3-4 fixed at equal distances on the side away from the copper heat-conducting block 3-1. The heat exchange fins 3-4 improve heat exchange efficiency by increasing the heat dissipation surface area, accelerating the transfer of heat to the air inside the headlight. The thermal grease coated on the contact surface between the copper heat-conducting block 3-1 and the heat exchange fins 3-4 can eliminate contact gaps and improve heat conduction efficiency, allowing heat to be transferred more efficiently from the copper heat-conducting block 3-1 to the heat exchange fins 3-4. Finally, heat dissipation is achieved through heat exchange between the heat exchange fins 3-4 and the air inside the headlight, maintaining the headlight's light guide component at a suitable temperature.

[0021] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A light guide assembly for automotive lights, comprising a light guide component (1) embedded in an automotive light headlight, characterized in that: Multiple light-emitting elements (2) are installed at equal intervals around the inner surface of the light-emitting element (1), and multiple light-emitting elements (2) are fixedly connected to each other by multiple light-emitting elements heat sinks (3). The light guide component (1) includes a thick-walled light guide (1-1) embedded and fixed in the vehicle lamp, and a light-transmitting hole (1-2) opened on the inner surface of the thick-walled light guide (1-1) for the light-emitting end of the light-emitting component (2) to pass through. The light-emitting component (2) includes a lamp bead bracket (2-1) and an LED lamp bead (2-2) embedded and fixed inside the lamp bead bracket (2-1). The light guide heat sink (3) includes a copper heat-conducting block (3-1), a titanium heat-conducting plate (3-3) fixed on the inner surface of the copper heat-conducting block (3-1), and several heat exchange fins (3-4) fixed at equal distances on the side of the titanium heat-conducting plate (3-3) away from the copper heat-conducting block (3-1); the copper heat-conducting block (3-1) is provided with multiple ventilation holes (3-2) inside.

2. The light guide assembly for automotive lights according to claim 1, characterized in that: The thick-walled light guide (1-1) is disposed around the periphery of the headlight lens and surrounds the headlight.

3. A light guide assembly for automotive lights according to claim 1, characterized in that: The interior of the vehicle headlight is provided with a reserved chamber for the installation of the light guide component (1), the light-emitting component (2) and the light guide heat sink component (3).

4. A light guide assembly for automotive lights according to claim 1, characterized in that: The outer surface edges of the thick-walled optical guide (1-1) are all rounded.

5. A light guide assembly for automotive lights according to claim 1, characterized in that: The lamp bead bracket (2-1) is fixed to the edge of the port of the light-transmitting hole (1-2) by adhesive on the side face of the thick-walled light guide tube (1-1).

6. A light guide assembly for automotive lights according to claim 1, characterized in that: The left and right sides of the copper heat-conducting block (3-1) are in contact with the side of the lamp bead bracket (2-1) that is close to each other, and are used to absorb the heat emitted by the light-emitting element (2). The side of the copper heat-conducting block (3-1) that is close to the thick-walled light guide (1-1) is in contact with the inner surface of the thick-walled light guide (1-1), and is used to absorb the heat inside the thick-walled light guide (1-1).

7. A light guide assembly for automotive lights according to claim 1, characterized in that: The ventilation holes (3-2) are used to increase the contact surface area between the copper heat-conducting block (3-1) and the air inside the vehicle lamp.

8. A light guide assembly for automotive lights according to claim 1, characterized in that: The copper heat-conducting block (3-1) and the heat exchange fins (3-4) are both coated with a layer of thermally conductive silicone grease on the side that is close to each other.

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