A type of automotive LED headlight

Abstract

This utility model discloses an automotive LED headlight, including a mounting base, an LED lamp board, a heat pipe, a heat dissipation aluminum frame, a cooling fan, and a printed circuit board. The heat dissipation aluminum frame has a tail shell at its rear and a lamp board slot and a heat pipe slot at its front. The LED lamp board is inserted into the lamp board slot, and the heat pipe is inserted into the heat pipe slot. The LED lamp board has several LED sheets on both its upper and lower surfaces, and the LED sheets are located within the lamp cavity. The mounting base has a mounting hole in its middle, and two limiting protrusions are provided on the inner wall of the mounting hole. The heat dissipation aluminum frame has a limiting cylinder in its middle section, and the mounting hole fits onto the outer wall of the limiting cylinder. The outer wall of the limiting cylinder also has a limiting annular groove. The mounting base is fitted onto the limiting cylinder, and the limiting protrusions are located within the limiting annular groove. This automotive LED headlight of this utility model is easy and quick to assemble; the cleverly placed cooling fan significantly improves heat dissipation and extends the lifespan of the lamp.

Description

Technical Field

[0001] This utility model relates to the field of automotive lighting technology, and in particular to an automotive LED headlight. Background Technology

[0002] Currently, car owners have increasingly higher requirements for the brightness and range of car headlights, leading to higher wattage in mainstream headlights on the market. Higher wattage results in higher heat generation, necessitating improved heat dissipation to ensure the headlights' lifespan. Furthermore, the mounting base and heat sink frame of these products are typically welded together, requiring welding tools and making assembly cumbersome. Utility Model Content

[0003] The purpose of this utility model is to provide an automotive LED headlight with a simple, reasonable, stable, and reliable structural design; convenient and quick product assembly; and a cleverly placed cooling fan that significantly improves heat dissipation and extends the lifespan of the lamp.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0005] An automotive LED headlight includes a mounting bracket, an LED light panel, a heat pipe, a heat dissipation aluminum frame, a heat dissipation fan, and a printed circuit board.

[0006] The heat dissipation aluminum frame is provided with a tail shell at the rear, and a lamp board slot and a heat pipe slot at the front. The LED lamp board is inserted into the lamp board slot, and the heat pipe is inserted into the heat pipe slot.

[0007] The middle section of the heat dissipation aluminum frame is provided with a lamp cavity, which is a through hole that runs through the upper and lower end faces and is used to set LED light sheets;

[0008] The LED light board is provided with a number of LED light pieces on both the upper and lower surfaces, and the LED light pieces are located inside the light cavity;

[0009] The heat dissipation aluminum frame includes a left heat dissipation frame and a right heat dissipation frame; the left heat dissipation frame and the right heat dissipation frame have the same structure, are assembled facing each other, and are fixed by screws;

[0010] The tail cover is composed of several heat sinks, with a cylindrical cavity for mounting a printed circuit board and a circular groove for mounting a cooling fan in its central part. The printed circuit board is located inside the cylindrical cavity. The cooling fan is mounted in the circular groove and is threadedly connected to a threaded hole at the end of the tail cover by screws. The LED light board, cooling fan, and printed circuit board are electrically connected.

[0011] The mounting base has a mounting hole in the middle, and several claws are provided along its outer edge for installation and positioning. The inner wall of the mounting hole has two symmetrically arranged limiting claws.

[0012] The heat dissipation aluminum frame has a limiting cylinder in its middle section, and the mounting hole is fitted onto the outer wall of the limiting cylinder. The limiting cylinder has guide grooves extending through its left and right ends. The outer wall of the limiting cylinder also has a limiting annular groove, which communicates with the guide grooves. The mounting seat is fitted onto the limiting cylinder, and a limiting claw is positioned within the limiting annular groove, restricting the axial displacement of the mounting seat and the heat dissipation aluminum frame. During assembly, the limiting claw is aligned with the inlet of the guide groove, allowing it to enter the guide groove first, and then the mounting seat (or heat dissipation aluminum frame) is rotated to allow the limiting claw to enter the limiting annular groove.

[0013] A tensioning rubber ring is also provided between the heat dissipation aluminum frame and the mounting base; after the limiting claw is connected to the limiting ring groove, the tensioning rubber ring is in a compressed state; the right end of the mounting base and the left end of the tail shell work together to compress the tensioning rubber ring, so that the mounting base, the heat dissipation aluminum frame (tail shell) and the tensioning rubber ring have a large friction force, so that after the mounting base and the heat dissipation aluminum frame are connected, it is difficult for the two to be displaced in the radial direction.

[0014] According to the above design, the axial and radial displacement of the mounting base and the heat dissipation aluminum frame can be limited, ensuring the stability of component connection and assembly under normal conditions of the lamp; at the same time, the product is simple and quick to assemble, and can be assembled manually without tools.

[0015] The right end of the guide channel is connected to the cylindrical cavity, and the cooling fan blows airflow at high speed to the heat sink and the cylindrical cavity; the airflow in the cylindrical cavity can be blown to the front section of the heat sink aluminum frame and the LED light board through the guide channel.

[0016] The beneficial effects of this utility model are:

[0017] Its structural design is simple, reasonable, stable and reliable; the product is easy and quick to assemble; the cooling fan is cleverly placed in a reasonable position, which significantly improves the heat dissipation effect and extends the service life of the lamp. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of an automotive LED headlight according to the present invention;

[0019] Figure 2 This is a structural schematic diagram of an automotive LED headlight according to the present invention (from another perspective);

[0020] Figure 3 This is a front view of an automotive LED headlight according to the present invention;

[0021] Figure 4 for Figure 3 Cross-sectional view along the BB direction;

[0022] Figure 5 for Figure 4 A magnified view of a portion of the image;

[0023] Figure 6 for Figure 4 A slanted view;

[0024] Figure 7 This is a schematic diagram of the structure of an automotive LED headlight of the present invention, excluding the mounting bracket;

[0025] Figure 8 This is a schematic diagram of the mounting base. Detailed Implementation

[0026] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0027] like Figure 1-8 As shown, an automotive LED headlight includes a mounting base 1, an LED light panel 2, a heat pipe 3, a heat dissipation aluminum frame 4, a heat dissipation fan 5, and a printed circuit board 6.

[0028] The heat dissipation aluminum frame 4 has a tail shell 41 at its rear end, and a lamp board slot 42 and a heat pipe slot 43 at its front end; the LED lamp board 2 is inserted into the lamp board slot 42; the heat pipe 3 is inserted into the heat pipe slot 43. The heat pipe is a highly efficient two-phase heat transfer technology for heat dissipation of automotive headlights. It achieves a much higher efficiency than metal heat conduction through the phase change cycle of the working fluid, and is especially suitable for rapid temperature equalization of LED headlights in a confined space.

[0029] The middle section of the heat dissipation aluminum frame 4 is provided with a lamp cavity 40, which is a through hole that penetrates the upper and lower end faces and is used to set the LED light sheet 44.

[0030] The LED light panel 2 is provided with a plurality of LED light pieces 44 on both the upper and lower sides, and the LED light pieces 44 are disposed inside the lamp cavity 40;

[0031] The heat dissipation aluminum frame 4 includes a left heat dissipation frame 45 and a right heat dissipation frame 46; the left heat dissipation frame 45 and the right heat dissipation frame 46 have the same structure, are assembled facing each other, and are fixed by screws;

[0032] The tail cover 41 is composed of several heat sinks 47, with a cylindrical cavity 48 for mounting the printed circuit board 6 and a circular groove 49 for mounting the cooling fan 5 in its central part. The printed circuit board 6 is disposed in the cylindrical cavity 48. The cooling fan 5 is mounted in the circular groove 49 and is threadedly connected to the threaded hole at the end of the tail cover 41 by screws. The LED light board 2, the cooling fan 5, and the printed circuit board 6 are electrically connected.

[0033] The mounting base 1 has a mounting hole 10 in the middle, and several claws 11 are provided on its outer edge. The claws 11 are used for installation and limiting. The inner wall of the mounting hole 10 is provided with two limiting protrusions 12, which are symmetrically arranged.

[0034] The heat dissipation aluminum frame 4 has a limiting cylinder 7 in its middle section, and the mounting hole 10 is fitted onto the outer wall of the limiting cylinder 7. The limiting cylinder 7 has a guide groove 71 that runs through its left and right ends. The outer wall of the limiting cylinder 7 also has a limiting annular groove 72, and the guide groove 71 communicates with the limiting annular groove 72. The mounting seat 1 is fitted onto the limiting cylinder 7, and the limiting claw 12 is located in the limiting annular groove 72 to limit the axial displacement of the mounting seat 1 and the heat dissipation aluminum frame 4. When assembling the two, the limiting claw 12 is aligned with the inlet of the guide groove 71, so that the limiting claw 12 enters the guide groove 71 first, and then the mounting seat 1 (or the heat dissipation aluminum frame 4) is rotated so that the limiting claw 12 enters the limiting annular groove 72.

[0035] A tensioning rubber ring 8 is also provided between the heat dissipation aluminum frame 4 and the mounting base 1; after the limiting claw 12 is connected to the limiting ring groove 72, the tensioning rubber ring 8 is in a compressed state; the right end of the mounting base 1 and the left end of the tail shell 41 work together to compress the tensioning rubber ring 8, so that the mounting base 1, the heat dissipation aluminum frame 4 (tail shell 41) and the tensioning rubber ring 8 have a large friction force, so that after the mounting base 1 and the heat dissipation aluminum frame 4 are connected, it is difficult for the two to be displaced in the radial direction.

[0036] According to the above design, the axial and radial displacement of the mounting base 1 and the heat dissipation aluminum frame 4 can be limited, ensuring the stability of component connection and assembly under normal conditions of the lamp; at the same time, the product is simple and quick to assemble, and can be assembled manually without tools.

[0037] The right end of the guide channel 71 is connected to the cylindrical cavity 48. The cooling fan 5 blows air at high speed into the heat sink 47 and the cylindrical cavity 48. The airflow in the cylindrical cavity 48 can be blown through the guide channel 71 to the front section of the heat sink aluminum frame 4 and the LED light board 2.

[0038] Preferably, the heat dissipation aluminum frame 4, the tail shell 41, and the limiting cylinder 7 are integrally formed.

[0039] Preferably, the end of the heat pipe 3 is inserted into the tail shell 41, so that the heat pipe 3 end can be heated by the airflow blown by the fan, and the heat sink can absorb the heat at the end of the heat pipe 3. This forms a heat dissipation method in which the heat pipe 3 absorbs heat from the lamp plate 2 at the front end and dissipates heat at the tail end.

[0040] 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 alterations to these embodiments without departing from the principles and spirit of this utility model will still fall within the protection scope of this utility model.

Claims

1. An automotive LED headlamp, characterized by: Includes mounting base, LED light panel, heat pipe, heat sink aluminum frame, cooling fan, and printed circuit board; The heat dissipation aluminum frame is provided with a tail shell at the rear, and a lamp board slot and a heat pipe slot at the front. The LED lamp board is inserted into the lamp board slot, and the heat pipe is inserted into the heat pipe slot. The middle section of the heat dissipation aluminum frame is provided with a lamp cavity, which is a through hole that penetrates the upper and lower end faces; The LED light board is provided with a number of LED light pieces on both the upper and lower surfaces, and the LED light pieces are located inside the light cavity; The mounting base has a mounting hole in the middle, and the inner wall of the mounting hole has two limiting claws, which are symmetrically arranged; the heat dissipation aluminum frame has a limiting cylinder in the middle section, and the mounting hole is fitted onto the outer wall of the limiting cylinder. The limiting cylinder is provided with a guide groove that runs through its left and right ends; the outer wall of the limiting cylinder is also provided with a limiting ring groove, and the guide groove is connected to the limiting ring groove. The mounting base is sleeved on the limiting cylinder, and the limiting claw is located in the limiting ring groove.

2. The automotive LED headlamp of claim 1, wherein: The tail shell is composed of several heat sinks, with a cylindrical cavity for mounting a printed circuit board and a circular groove for mounting a cooling fan in its middle. The printed circuit board is disposed inside the cylindrical cavity; The cooling fan is mounted in a circular groove and is threadedly connected to the threaded hole at the end of the tail shell by screws.

3. The automotive LED headlamp of claim 2, wherein: The LED light panel, cooling fan, and printed circuit board are electrically connected.

4. The automotive LED headlamp of any one of claims 1-3, wherein: The heat dissipation aluminum frame includes a left heat dissipation frame and a right heat dissipation frame; the left heat dissipation frame and the right heat dissipation frame have the same structure, are assembled facing each other, and are fixed by screws.

5. The automotive LED headlamp of claim 4, wherein: The mounting base has several claws on its outer edge, which are used for installation and limiting.

6. The automotive LED headlamp of claim 4, wherein: A tensioning rubber ring is also provided between the heat dissipation aluminum frame and the mounting base; the right end of the mounting base and the left end of the tail shell work together to press the tensioning rubber ring.

7. The automotive LED headlamp of claim 6, wherein: The right end of the guide channel is connected to the cylindrical cavity.

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