A high-efficiency, long-life LED automotive headlight with a multi-layer heat dissipation structure

Abstract

This utility model relates to the field of LED automotive headlight technology, and more particularly to a high-efficiency, long-life LED automotive headlight with a multi-layer heat dissipation structure. It includes a lamp holder on which an LED light is mounted. The lamp holder is mounted on a first housing, and a main board is located at the bottom of the lamp holder. The main board is connected to the LED light via wires and is housed within the first housing. A second housing is mounted at the other end of the first housing, with an opening at the other end. A fan is built into the second housing and connected to the main board via wires. A fixing cover is provided at the opening of the second housing. Several spaced slots are formed along the edge of the second housing near the first housing. This utility model, through the combination of forced airflow from the fan and a multi-layer heat dissipation structure—namely, the use of fins, slots, and baffles—significantly improves the heat dissipation efficiency of the LED light and the main board, preventing power reduction or component damage due to overheating.

Description

Technical Field

[0001] This utility model relates to the field of LED automotive headlight technology, and in particular to a high-efficiency, long-life LED automotive headlight with a multi-layer heat dissipation structure. Background Technology

[0002] LED car headlights are lighting fixtures installed symmetrically on both sides of the front of the vehicle to illuminate the road ahead when driving at night. They use light-emitting diodes (LEDs) as the light source and are characterized by high brightness and long lifespan.

[0003] Due to the high brightness of LED automotive headlights, the diodes and mainboard operate at high power. Maintaining this high power output generates heat, which, if not addressed promptly, can easily cause the mainboard to overheat and trigger its self-protection mechanism, automatically reducing output power and thus decreasing the diode's luminous efficiency. To address this, we propose a high-efficiency, long-life LED automotive headlight with a multi-layered heat dissipation structure. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned shortcomings in the existing technology by proposing a high-efficiency, long-life LED automotive headlight with a multi-layer heat dissipation structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a high-efficiency, long-life LED automotive headlight with a multi-layer heat dissipation structure, including a lamp holder, an LED lamp mounted on the lamp holder, the lamp holder being disposed on a first housing, a main board being disposed at the bottom of the lamp holder, the main board being connected to the LED lamp via wires, and the main board being disposed inside the first housing. A second housing is installed at the other end of the first housing. The other end of the second housing is open, and a fan is built into the second housing. The fan is connected to the motherboard via wires, and a fixing cover is provided at the opening of the second housing. Several slots are arranged at intervals along the edge of the second housing near the first housing. Several baffles with "L"-shaped ends are also provided at the end of the second housing near the first housing. The inner side of the baffles faces the first housing, and the top of the baffles is inclined towards the first housing. The baffles correspond to the slots one by one. A connecting seat is installed in the middle of the side of the baffle near the second housing. Connecting shafts are rotatably installed at both ends of the connecting seat. The other end of the connecting shaft is fixed to a fixed seat, and the fixed seat is fixed to the second housing. A torsion spring is sleeved on the connecting shaft. One end of the torsion spring is fixed to the fixed seat, and the other end of the torsion spring is fixed to the connecting seat.

[0006] Preferably, an arc-shaped cut surface is provided on the inner side of the end of the baffle, and multiple spaced guide grooves are provided on the inner side of the baffle, with the guide grooves arranged along the length of the lamp holder.

[0007] Preferably, an inclined cut surface is provided along the bottom edge of the slot.

[0008] Preferably, multiple spaced fins are installed along the outer wall of the second housing, with the fins penetrating the second housing and positioned inside the second housing.

[0009] Preferably, an annular dustproof net is provided at one end of the second housing near the first housing, the dustproof net corresponding to the slot and fixed on the second housing.

[0010] Preferably, a threaded groove is provided on the inner wall of the end of the second housing away from the first housing, and the fixing cover includes an annular seat. The top of the annular seat is provided with a threaded protrusion corresponding to the threaded groove, so that the annular seat is threadedly connected to the opening of the second housing. An annular frame is detachably installed in the end of the annular seat away from the first housing, and a dustproof metal mesh is installed in the annular frame.

[0011] Preferably, an annular limiting plate is installed on the outer wall of the annular seat near the second housing, and multiple anti-slip strips arranged at intervals are installed on the outer wall of the annular seat.

[0012] The design scheme proposed in this utility model has the following beneficial effects in application: 1. This utility model combines forced airflow from a fan with a multi-layer heat dissipation structure, namely the setting of fins, slots, and baffles to guide airflow, which significantly improves the heat dissipation efficiency of LED lights and motherboards, and avoids power reduction or component damage due to overheating.

[0013] 2. This utility model optimizes the airflow direction through the "L"-shaped design, inclined cut surface and guide groove at the end of the baffle, so that the cold air is concentrated and blown towards the LED light, thereby enhancing the local heat dissipation effect. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ; Figure 3 For the explosion of this utility model Figure 1 ; Figure 4 For the explosion of this utility model Figure 2 ; Figure 5 This is a schematic diagram of the baffle structure of this utility model.

[0015] In the diagram: 1. Lamp holder; 2. LED light; 3. Main board; 4. First housing; 5. Second housing; 6. Threaded groove; 7. Fan; 8. Annular seat; 9. Limiting plate; 10. Slot; 11. Inclined section; 12. Baffle; 13. Arc-shaped section; 14. Connecting seat; 15. Connecting shaft; 16. Fixing seat; 17. Torsion spring; 18. Fin; 19. Dustproof metal mesh; 20. Annular frame. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] Example Reference Figures 1-5 A high-efficiency, long-life LED automotive headlight with a multi-layer heat dissipation structure includes a lamp holder 1, on which an LED lamp 2 is mounted. The lamp holder 1 is mounted on a first housing 4. A main board 3 is located at the bottom of the lamp holder 1. The main board 3 is connected to the LED lamp 2 via wires and is housed inside the first housing 4. In actual use, a through hole is provided on the first housing 4 to allow the wires on the main board 3 to extend outward and connect to an external power source for powering the main board 3 and the LED lamp 2.

[0018] like Figure 2 and Figure 3 As shown, a second housing 5 is installed at the other end of the first housing 4. The other end of the second housing 5 is open, and a fan 7 is built into the second housing 5. The fan 7 is connected to the motherboard 3 through a wire. The fan 7 blows air toward the motherboard 3. A fixing cover is provided at the opening of the second housing 5.

[0019] Among them, such as Figure 3 and Figure 4 As shown, a threaded groove 6 is provided on the inner wall of the end of the second housing 5 away from the first housing 4. The fixing cover includes an annular seat 8. The top of the annular seat 8 is provided with a threaded protrusion corresponding to the threaded groove 6, so that the annular seat 8 is threadedly connected to the opening of the second housing 5, which facilitates the installation and removal of the annular seat 8 in the second housing 5. In actual use, a limiting groove is provided in the opening of the second housing 5. The frame of the fan 7 corresponds to the limiting groove, so that the fan 7 can be placed in the limiting groove. After the annular seat 8 is installed in the second housing 5, the end of the annular seat 8 can be pressed against the frame of the fan 7 to secure the fan 7, which facilitates the installation and removal of the fan 7.

[0020] An annular limiting plate 9 is installed on the outer wall of the annular seat 8 near the second housing 5 to limit the depth of the annular seat 8 screwed into the second housing 5, so as to prevent excessive compression from damaging the fan 7. In order to facilitate manual rotation of the annular seat 8, multiple anti-slip strips are installed on the outer wall of the annular seat 8.

[0021] A ring frame 20 is detachably installed at the end of the ring seat 8 away from the first housing 4. A dustproof metal mesh 19 is installed inside the ring frame 20 to remove dust from the air entering the second housing 5, reducing the amount of dust entering the second housing 5 and covering the motherboard 3, thus affecting the normal heat dissipation of the motherboard 3.

[0022] like Figure 1 and Figure 5 As shown, several slots 10 are spaced apart along the edge of the second housing 5 near the first housing 4. Several baffles 12 with curved "L" shapes are also provided at the same edge of the second housing 5 near the first housing 4. The inner side of the baffles 12 faces the first housing 4, and the top of the baffles 12 is inclined towards the first housing 4. Each baffle 12 corresponds to one of the slots 10. A connecting seat 14 is installed in the middle of the side of the baffle 12 near the second housing 5. Connecting shafts 15 are rotatably mounted on both ends of the connecting seat 14. The other end of the connecting shaft 15 is fixed to a fixing seat 16, which is fixed to the second housing 5. A torsion spring 17 is sleeved on the connecting shaft 15. One end of the torsion spring 17 is fixed to the fixed base 16, and the other end of the torsion spring 17 is fixed to the connecting base 14. When the fan 7 is running, the air sent into the second housing 5 will be discharged from the slot 10 and then contact the baffle 12. Due to the inclined setting and rotating connection of the baffle 12, the baffle 12 can rotate under the action of wind force. With the elastic action of the torsion spring 17, the baffle 12 can swing back and forth. Under the guidance of the baffle 12, the air can be blown fully towards the LED lamp 2, thereby accelerating the air flow around the LED lamp 2 and improving the heat dissipation efficiency of the LED lamp 2.

[0023] An inclined cut surface 11 is provided along the bottom edge of the slot 10, so that when air comes into contact with the inner end face of the second housing 5, it can converge into the slot 10 and exit more quickly.

[0024] It should be noted that an arc-shaped cut surface 13 is provided on the inner side of the end of the baffle 12, and multiple spaced guide grooves are provided on the inner side of the baffle 12. The guide grooves are arranged along the length of the lamp holder 1, which can guide the air in contact with the inner side of the baffle 12 and increase the air flow rate toward the LED lamp 2.

[0025] To further improve the heat dissipation of motherboard 3, such as Figure 1 and Figure 2As shown, multiple spaced fins 18 are installed along the outer wall of the second housing 5. The fins 18 penetrate the second housing 5 and are located inside the second housing 5, providing a multi-layer heat dissipation structure for the motherboard 3 and accelerating the heat dissipation of the motherboard 3.

[0026] It should be noted that, in order to prevent dust from falling into the second housing 5 from the slot 10 when not in use, an annular dustproof net is provided at one end of the second housing 5 near the first housing 4. The dustproof net corresponds to the slot 10 and is fixed on the second housing 5.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A multi-layer heat dissipation structure of high efficiency long life LED automobile headlamps, characterized in that: Includes a lamp holder (1), on which an LED lamp (2) is installed, and the lamp holder (1) is set on a first housing (4). A main board (3) is set at the bottom of the lamp holder (1), and the main board (3) is connected to the LED lamp (2) through wires. The main board (3) is set inside the first housing (4). A second housing (5) is installed at the other end of the first housing (4). The other end of the second housing (5) is open. A fan (7) is built into the second housing (5). The fan (7) is connected to the motherboard (3) through a wire. A fixing cover is provided at the opening of the second housing (5). Several slots (10) are provided at intervals along the edge of the second housing (5) near the first housing (4). Several baffles (12) with curved "L" shapes are also provided at the edge of the second housing (5) near the first housing (4). The inner side of the baffles (12) faces the first housing (4), and the top of the baffles (12) is inclined towards the first housing (4). The baffles (12) correspond one-to-one with the slots (10). 2) A connecting seat (14) is installed in the middle of one side near the second housing (5). A connecting shaft (15) is rotatably installed at both ends of the connecting seat (14). The other end of the connecting shaft (15) is fixed on the fixed seat (16), and the fixed seat (16) is fixed to the second housing (5). A torsion spring (17) is sleeved on the connecting shaft (15). One end of the torsion spring (17) is fixed on the fixed seat (16), and the other end of the torsion spring (17) is fixed to the connecting seat (14).

2. The high efficiency long life LED vehicle headlamp with multi-layer heat dissipation structure according to claim 1, characterized in that: An arc-shaped cut surface (13) is provided on the inner side of the end of the baffle (12), and multiple spaced guide grooves are provided on the inner side of the baffle (12), with the guide grooves arranged along the length direction of the lamp holder (1).

3. The high efficiency long life LED vehicle headlamp with multi-layer heat dissipation structure according to claim 1, characterized in that: An inclined cut surface (11) is provided along the bottom edge of the slot (10).

4. The high efficiency long life LED vehicle headlamp with multi-layer heat dissipation structure according to claim 1, characterized in that: Multiple spaced fins (18) are installed along the outer wall of the second housing (5), and the fins (18) penetrate the second housing (5) and are located on the inner side of the second housing (5).

5. The high efficiency long life LED vehicle headlamp with multi-layer heat dissipation structure according to claim 1, characterized in that: A ring-shaped dustproof net is provided at one end of the second housing (5) near the first housing (4). The dustproof net corresponds to the slot (10) and is fixed on the second housing (5).

6. The high-efficiency, long-life LED automotive headlight with a multi-layer heat dissipation structure according to claim 1, characterized in that: A threaded groove (6) is provided on the inner wall of the end of the second housing (5) away from the first housing (4). The fixed cover includes an annular seat (8). The top of the annular seat (8) is provided with a threaded protrusion corresponding to the threaded groove (6), so that the annular seat (8) is threadedly connected to the opening of the second housing (5). An annular frame (20) is detachably installed in the end of the annular seat (8) away from the first housing (4). A dustproof metal mesh (19) is installed in the annular frame (20).

7. The high efficiency long lifetime LED vehicle headlamp with multi-layer heat dissipation structure according to claim 1, characterized in that: An annular limiting plate (9) is installed on the outer wall of the annular seat (8) near the second housing (5), and multiple anti-slip strips are installed on the outer wall of the annular seat (8) at intervals.

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