Automobile lamp heat dissipation structure facilitating airflow circulation

Abstract

The utility model discloses an automobile lamp heat dissipation structure facilitating airflow circulation, and belongs to the field of automobile lamps. The automobile lamp heat dissipation structure facilitating airflow circulation comprises a heat dissipation rod, a first heat dissipation fin and a second heat dissipation fin are arranged on the two sides of the lower end of the heat dissipation rod respectively, and a pair of fans is arranged on one side of the first heat dissipation fin. Third heat dissipation fins are welded to the first heat dissipation fins and the second heat dissipation fins towards the heat dissipation rod. The automobile lamp structure capable of enhancing heat dissipation solves the problems that in the heat dissipation process of an existing automobile lamp structure capable of enhancing heat dissipation, the flow track is fixed, and the heat flow track cannot be adjusted according to the shape of the installation position. The gas flowing track can be adjusted through rotation, and the situation that heat is limited by an automobile internal structure and cannot be stably discharged is avoided.

Description

Technical Field

[0001] This utility model relates to the field of automotive lighting, specifically to a heat dissipation structure for automotive lighting that facilitates airflow. Background Technology

[0002] Automotive headlight heat dissipation structures mainly achieve heat management through components such as thermal conductive materials, heat dissipation fins, and fans. LED or halogen bulbs generate high temperatures when working, and heat needs to be quickly conducted through a metal substrate. Heat dissipation fins increase the surface area and utilize air convection for natural heat dissipation. Some headlights are equipped with fans for forced heat dissipation to improve efficiency and prevent heat accumulation. These structures work together to ensure stable operation of headlights and extend their lifespan.

[0003] Chinese patent CN220891972U discloses an automotive headlight structure for enhanced heat dissipation, including a radiator with heat dissipation fins evenly distributed around its periphery. The heat dissipation fins have heat dissipation channels inside them, and the fins are arranged in a ring shape. Heat dissipation holes are evenly distributed around the periphery of the heat dissipation channels. Through the heat dissipation channels and the heat dissipation holes evenly distributed on the heat dissipation channels, the heat dissipation effect can be enhanced when the cooling fan is actively dissipating heat. In addition, the LED light panel is closely attached to the heat dissipation rod, which can improve the thermal conductivity during passive heat dissipation, thereby enhancing the heat dissipation effect.

[0004] The aforementioned patented automotive headlight structure with enhanced heat dissipation has a fixed heat flow trajectory during the heat dissipation process. It cannot adjust the heat flow trajectory according to the shape of the installation location, and therefore cannot make the automotive headlight heat dissipation structure adapt to different installation environments. Utility Model Content

[0005] The purpose of this invention is to provide a heat dissipation structure for automotive headlights that facilitates airflow. By using a second mounting ring to drive the first and second heat dissipation fins and the fan at the lower end to rotate, the rotation can adjust the airflow trajectory and avoid the heat being restricted by the internal structure of the car and unable to be stably discharged, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a heat dissipation structure for automotive headlights that facilitates airflow, comprising a heat dissipation rod, wherein a first heat dissipation fin and a second heat dissipation fin are respectively provided on both sides of the lower end of the heat dissipation rod, a pair of fans are provided on one side of the first heat dissipation fin, a third heat dissipation fin is welded to the first and second heat dissipation fins facing the heat dissipation rod, a second mounting ring is welded to the third heat dissipation fin facing the heat dissipation rod, a first mounting ring is provided between the second mounting ring and the heat dissipation rod and welded and fixed to the heat dissipation rod, a movable cavity is provided inside the first mounting ring, and threaded rods are provided through both sides of the movable cavity and welded and fixed to the second mounting ring.

[0007] Preferably, the trajectory of the second heat dissipation fin is inclined to that of the first heat dissipation fin.

[0008] Preferably, the fan is provided with brackets at both the front and rear ends, and the brackets are fixedly connected to the first heat dissipation fins by bolts.

[0009] Preferably, a limiting plate is welded to the upper end of the threaded rod, and a threaded retaining ring is provided on the outside of the threaded rod.

[0010] Preferably, the second mounting ring has a recessed mounting groove inside.

[0011] Preferably, a thermally conductive pad is provided inside the mounting groove.

[0012] Preferably, a handle is provided on one side of the bracket.

[0013] Preferably, the handle is welded and fixed to the second mounting ring.

[0014] Preferably, the second heat dissipation fin is welded and fixed to the first heat dissipation fin.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] The fan of this invention can be adjusted in angle as the threaded rod moves within the movable cavity. Simultaneously, the first and second heat dissipation fins adjust their angles along with the fan's rotation. Adjusting the fan prevents foreign objects at the installation location from affecting the fan's extraction of gas from the downstream end. The angle adjustment allows for efficient and smooth gas extraction and contact with the first and second heat dissipation fins. Furthermore, after adjusting the angle of the second mounting ring, the fixing ring can rotate outside the threaded rod, allowing the first and second mounting rings to fit together. During this fitting process, a thermally conductive pad can be placed between the first and second mounting rings. This thermally conductive pad ensures a tight fit between the second mounting ring after angle adjustment, allowing for stable heat transfer to the lower second and first heat dissipation fins. The entire heat dissipation structure provides an efficient gas flow path and a stable heat flow path. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall external structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the gas flow trajectory of this utility model;

[0019] Figure 3 This is a cross-sectional view showing the positional relationship of the thermal pads of this utility model;

[0020] Figure 4 For the present utility model Figure 3 Enlarged view of a portion of region A in the middle;

[0021] Figure 5 This is a schematic diagram showing the positional relationship of the third heat dissipation fin of this utility model.

[0022] In the diagram: 1. Heat sink rod; 2. LED light panel; 3. First mounting ring; 4. Movable cavity; 5. Threaded rod; 6. Restricting plate; 7. Fixing ring; 8. Second mounting ring; 9. Fan; 10. Bracket; 11. First heat dissipation fin; 12. Handle; 13. Second heat dissipation fin; 14. Connecting end; 15. Mounting groove; 16. Thermal pad; 17. Third heat dissipation fin. Detailed Implementation

[0023] The present invention will be further described below with reference to specific embodiments.

[0024] Example 1: As Figure 1 As shown, a car headlight heat dissipation structure that facilitates airflow in this embodiment includes a heat dissipation rod 1. An LED light panel 2 is provided on the upper part of the heat dissipation rod 1. After the LED light panel 2 is powered on and produces light, it can provide the required front lighting for the car. The heat generated by the LED light panel 2 will be conducted through the heat dissipation rod 1, which facilitates subsequent heat dissipation.

[0025] To improve heat dissipation efficiency, a first heat dissipation fin 11 is provided on one side of the lower end of the heat dissipation rod 1, such as... Figure 2 As shown, a second heat dissipation fin 13 is provided on the other side of the lower end of the heat dissipation rod 1, and the second heat dissipation fin 13 is welded and fixed to the first heat dissipation fin 11. The second heat dissipation fin 13 and the first heat dissipation fin 11, which are made of metal, conduct heat and expand the contact area between heat and gas, thereby increasing the heat dissipation area.

[0026] The second heat dissipation fin 13 is inclined to the trajectory of the first heat dissipation fin 11. The inclined second heat dissipation fin 13 can conduct heat and adjust the trajectory of the flowing gas at the same time, so that the heat can be diverted and discharged to both sides. In addition, the inclined second heat dissipation fin 13 can increase the contact area between heat and gas and improve heat dissipation efficiency.

[0027] On the other hand, a pair of horizontally distributed fans 9 are provided on one side of the first heat dissipation fin 11. The two fans 9 correspond to the gas transmission of the two inclined tracks of the second heat dissipation fin 13. The pair of fans 9 can increase the gas flow speed and the amount of gas flow, thereby improving the heat dissipation efficiency.

[0028] The front and rear ends of the fan 9 are equipped with brackets 10, and the brackets 10 are fixedly connected to the first heat dissipation fins 11 by bolts.

[0029] To facilitate the adjustment of the angles of the second heat dissipation fin 13, the first heat dissipation fin 11, and the fan 9, a third heat dissipation fin 17 is provided extending from the first heat dissipation fin 11 and the second heat dissipation fin 13 toward the heat dissipation rod 1, such as... Figure 5 As shown, the third heat dissipation fin 17 is welded and fixed to the first heat dissipation fin 11 and the second heat dissipation fin 13 respectively. The third heat dissipation fin 17 is provided with a second mounting ring 8 facing the heat dissipation rod 1, and the second mounting ring 8 is welded and fixed to the third heat dissipation fin 17. By twisting the second mounting ring 8, the angles of the lower second heat dissipation fin 13, the first heat dissipation fin 11 and the fan 9 can be adjusted synchronously.

[0030] Among them, a first mounting ring 3 is provided between the second mounting ring 8 and the heat sink rod 1, and the first mounting ring 3 is welded and fixed to the heat sink rod 1. A movable cavity 4 is provided inside the first mounting ring 3, and threaded rods 5 are provided through both sides inside the movable cavity 4. After the second mounting ring 8 rotates at the lower end of the first mounting ring 3, the threaded rods 5 rotate synchronously in the movable cavity 4.

[0031] The lower end of the threaded rod 5 is welded and fixed to the second mounting ring 8 via the connecting end 14. A limiting piece 6 is provided at the upper end of the threaded rod 5, and the limiting piece 6 is welded and fixed to the threaded rod 5. Figure 3 As shown, a retaining ring 7 is provided on the outside of the threaded rod 5, and the inside of the retaining ring 7 is threaded with the outside of the threaded rod 5. Through the threaded engagement, the retaining ring 7 can move laterally after rotation. The lateral movement of the retaining ring 7 can face and fit against the first mounting ring 3. The threaded rod 5 fitting against the first mounting ring 3 can fix the threaded rod 5 after angle adjustment and the second mounting ring 8 connected to the lower end of the threaded rod 5.

[0032] The extension of the limiting piece 6 can prevent the retaining ring 7 from rotating and falling off the outside of the threaded rod 5;

[0033] To ensure efficient heat transfer after rotation of the second mounting ring 8, facilitating the transfer of heat generated at the heat sink 1 to the lower second heat sink fin 13 and the first heat sink fin 11, a mounting groove 15 is recessed inside the second mounting ring 8 facing the first mounting ring 3. Figure 4 As shown, a thermally conductive pad 16 is provided inside the mounting groove 15. By rotating the retaining ring 7 outside the threaded rod 5, the first mounting ring 3 and the second mounting ring 8 can be clamped together. The clamping can fix the angle of the second mounting ring 8 while stably clamping the thermally conductive pad 16.

[0034] To facilitate gripping and holding the second mounting ring 8, a handle 12 is provided on one side of the bracket 10, and the handle 12 is welded and fixed to the second mounting ring 8. The reserved handle 12 makes it easy to grip the entire automotive headlight heat dissipation structure.

[0035] Working principle: After fixing the LED light panel 2, to prevent foreign objects inside the car from obstructing the fan 9's gas extraction, after fixing the heat sink 1 and the corresponding LED light panel 2, rotate and adjust the position of the second mounting ring 8 and the fan 9 at the lower end of the second mounting ring 8. During the rotation, the threaded rod 5 connected to the second mounting ring 8 slides in the movable cavity 4. After the fan 9 is adjusted, place a sheet-like heat-conducting pad 16 in the mounting groove 15 between the second mounting ring 8 and the first mounting ring 3. Rotate the fixing ring 7 outside the two threaded rods 5 so that the fixing ring 7 moves toward the first mounting ring 3 and fits against the first mounting ring 3. After the fixing ring 7 fits against the first mounting ring 3, fix the angle adjustment. The reassembled second mounting ring 8 and fan 9 use a heat dissipation structure to dissipate the heat generated at the LED light board 2. The heat from the LED light board 2 is transferred to the first mounting ring 3 through the heat dissipation rod 1. The first mounting ring 3 transfers the heat to the second mounting ring 8 through the thermal pad 16. The second mounting ring 8 transfers the heat to the first heat dissipation fin 11 and the second heat dissipation fin 13 through the third heat dissipation fin 17. The fan 9 is started, and it draws the gas from the rear end and sends the gas to the positions of the first heat dissipation fin 11 and the second heat dissipation fin 13, where it contacts the heat on the surfaces of the first heat dissipation fin 11 and the second heat dissipation fin 13. The heat is then discharged with the air driven by the fan 9.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat dissipation structure of an automobile lamp facilitating the circulation of air flow, comprising a heat dissipation rod (1), characterized in that, The lower end of the heat dissipation rod (1) is provided with a first heat dissipation fin (11) and a second heat dissipation fin (13) on both sides, one side of the first heat dissipation fin (11) is provided with a pair of fans (9), the first heat dissipation fin (11) and the second heat dissipation fin (13) are welded towards the heat dissipation rod (1) and provided with a third heat dissipation fin (17), the third heat dissipation fin (17) is welded towards the heat dissipation rod (1) and provided with a second mounting ring (8), the second mounting ring (8) and the heat dissipation rod (1) are provided with a first mounting ring (3) welded and fixed with the heat dissipation rod (1), the inside of the first mounting ring (3) is provided with a movable cavity (4), and both sides of the inside of the movable cavity (4) are provided with a threaded rod (5) welded and fixed with the second mounting ring (8).

2. The automobile lamp heat dissipation structure facilitating air flow circulation according to claim 1, characterized in that: The second heat dissipation fin (13) is inclined to the track of the first heat dissipation fin (11).

3. The automobile lamp heat dissipation structure facilitating air flow circulation according to claim 1, characterized in that: Both ends of the fan (9) are provided with a support (10), and the support (10) and the first heat dissipation fin (11) are connected through bolt fixing.

4. The automobile lamp heat dissipation structure facilitating air flow circulation according to claim 1, characterized in that: The upper end of the threaded rod (5) is welded with a limiting piece (6), and the outside of the threaded rod (5) is provided with a fixed ring (7) matched with threads.

5. The automobile lamp heat dissipation structure facilitating air flow circulation according to claim 1, characterized in that: The inside of the second mounting ring (8) is recessed and provided with a mounting groove (15).

6. The automobile lamp heat dissipation structure facilitating air flow circulation according to claim 5, characterized in that: The inside of the mounting groove (15) is provided with a heat-conducting gasket (16).

7. The automobile lamp heat dissipation structure facilitating air flow circulation according to claim 3, characterized in that: One side of the support (10) is provided with a handle (12).

8. The automobile lamp heat dissipation structure facilitating air flow circulation according to claim 7, characterized in that: The handle (12) and the second mounting ring (8) are welded and fixed.

9. The automobile lamp heat dissipation structure facilitating air flow circulation according to claim 2, characterized in that: The second heat dissipation fin (13) and the first heat dissipation fin (11) are welded and fixed.

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