Heat dissipation device for automobile lamp

Abstract

The heat dissipation device for the automobile lamp comprises an automobile lamp bottom shell, an outer fan is rotationally connected to the outer side of the automobile lamp bottom shell, a plurality of outer magnets are fixedly connected to the outer fan, an inner fan is rotationally connected to the inner side of the automobile lamp bottom shell, and a plurality of inner magnets corresponding to the outer magnets are fixedly connected to the inner fan. And each inner magnet and each outer magnet are magnetically attracted, so that the outer fan rotates to drive the inner fan to rotate. When external air flows, passes through the outer ventilation hood and enables the outer fan blades to rotate, the outer fan rotates around the outer rotating shaft and further drives the outer magnet to rotate, and due to the attraction force between the outer magnet and the inner magnet on the outer fan, the attraction force drives the inner magnet to rotate and further drives the inner fan to rotate around the inner rotating shaft, so that the inner fan blades rotate; therefore, the air flow is brought into the interior of the automobile lamp through the inner ventilation hood, and the interior of the automobile lamp is cooled.

Description

Technical Field

[0001] The present invention relates to the technical field of heat dissipation, and in particular to a heat dissipation device for automobile lamps. Background Art

[0002] Car lights have high power and usually generate a lot of heat during driving. In hot weather or when driving during the day, excessive heat can cause irreversible damage to the lamps. It is necessary to install a heat sink to dissipate the heat of the car lamps to ensure the safety of lighting driving.

[0003] In the prior art, a cooling fan is generally provided to dissipate heat from automobile lamps, or a cooling fan is used to accelerate the air flow to dissipate heat from the lamps, so as to extend the service life of automobile lamps and improve the lighting efficiency of lamps. However, the cooling fans used in the prior art all use the power source of the vehicle body. The vehicle body power drives the motor to operate, and the motor drives the cooling fan to operate, so as to drive the air flow, thereby reducing the temperature of the lamps and achieving the effect of heat dissipation. In other words, the cooling fan in the prior art needs to use electrical energy to convert into mechanical energy to achieve heat dissipation. This method increases the energy consumption of the entire vehicle, and when the power of the entire vehicle is insufficient, the driving power of the cooling fan will be reduced, thereby affecting the normal operation and heat dissipation effect of the cooling fan. Summary of the invention

[0004] The purpose of the present invention is to provide a heat dissipation device for automobile lamps, which utilizes the air flow generated by the movement of the vehicle and the natural flow of air to drive the rotation of the outer fan, and then drives the rotation of the inner fan with the help of the magnetic field force, so as to realize the air flow to reduce the temperature of the lamp for heat dissipation, thereby reducing the energy consumption of the whole vehicle, achieving heat dissipation without the need for additional power input from the vehicle, saving energy, and not being restricted by the power supply conditions of the lamp.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides a heat dissipation device for automobile lamps, comprising a lamp bottom shell, wherein the outer side of the lamp bottom shell is rotatably connected to an external fan, and a plurality of external magnets are fixedly connected to the external fan, and the inner side of the lamp bottom shell is rotatably connected to an inner fan, and a plurality of internal magnets corresponding to the external magnets are fixedly connected to the internal fan, and each of the internal magnets is magnetically attracted to each of the external magnets, so that the rotation of the external fan will drive the rotation of the internal fan.

[0007] Preferably, the bottom shell of the vehicle lamp includes a bottom shell boss portion and a bottom shell extension portion, the bottom shell boss portion is located at the center of the bottom shell extension portion, a circular hole is provided in the middle of the bottom shell boss portion, and a circular groove is provided on the bottom shell boss portion toward the bottom shell extension portion, and the circular groove is located on the outer periphery of the circular hole.

[0008] Preferably, the circular hole is rotatably connected to one end of the inner rotating shaft, the other end of the inner rotating shaft is rotatably connected to the inner ventilation cover, and the inner rotating shaft is fixedly connected to the inner fan.

[0009] Preferably, the inner fan comprises a connected inner fan barrel and an inner connecting plate, the inner fan barrel is placed in the circular hole, the inner connecting plate is provided with an inner connecting plate edge protruding from the side wall of the inner fan barrel, the inner magnet is fixedly connected to the outer wall of the inner fan barrel and the end of the inner magnet abuts against the edge of the inner connecting plate, an inner connecting plate through hole is provided in the middle of the inner connecting plate, an inner connecting plate through hole is provided with an inner connecting plate boss in the direction away from the inner fan barrel, and inner fan blades are evenly distributed on the inner connecting plate.

[0010] Preferably, a first inner bearing seat is provided at the center of the inner bottom wall of the circular hole, and a first inner bearing is connected to the first inner bearing seat. A second inner bearing seat is provided at the center of the inner ventilation hood, and a second inner bearing is connected to the second inner bearing seat. One end of the inner rotating shaft is connected to the first inner bearing, and the other end of the inner rotating shaft passes through the inner fan barrel and the through hole of the inner connecting plate in sequence and is connected to the second inner bearing.

[0011] Preferably, the inner shaft is provided with a first inner shaft shoulder and a second inner shaft shoulder, the first inner shaft shoulder abuts against the first inner bearing, the second inner shaft shoulder abuts against the inner connecting plate, and the second inner bearing abuts against the inner connecting plate boss.

[0012] Preferably, the center of the bottom shell extension portion is rotatably connected to one end of an outer shaft, the other end of the outer shaft is rotatably connected to an outer ventilation hood, and the outer shaft is fixedly connected to the outer fan.

[0013] Preferably, the external fan includes an external fan barrel and an external fan boss, the external fan barrel is placed in the circular groove, the external magnet is fixedly connected to the inner side wall of the external fan barrel, the external fan boss is provided with a first through hole communicating with the external fan barrel, the external fan boss includes a stepped first boss and a second boss, the first boss is provided with a first groove, the second boss is provided with a second groove, and a plurality of external fan blades are evenly distributed on the side wall of the external fan boss.

[0014] Preferably, a first outer bearing seat is provided at the center of the bottom shell extension portion, a first outer bearing is connected to the first outer bearing seat, the first outer bearing abuts against the first groove, a second outer bearing seat is provided at the center of the outer ventilating cover, a second outer bearing is connected to the second outer bearing seat, one end of the outer rotating shaft is connected to the first outer bearing, and the other end of the outer rotating shaft is connected to the second outer bearing after passing through the first through hole;

[0015] The outer shaft is provided with a first outer shaft shoulder and a second outer shaft shoulder. The first outer shaft shoulder abuts against the second groove, and the second outer shaft shoulder abuts against the second outer bearing.

[0016] Preferably, a plurality of mounting columns are evenly distributed on the outer side wall of the boss portion of the bottom shell, one end of each mounting column is connected to the inner ventilation hood, and the other end of each mounting column is connected to the outer ventilation hood.

[0017] Compared with the prior art, the present invention has achieved the following beneficial technical effects:

[0018] 1. In the heat dissipation device for automobile lamps provided by the present invention, the inner magnet is arranged on the outer side wall of the inner fan cylinder accommodated in the circular hole, and the outer magnet is arranged on the inner side wall of the outer fan cylinder accommodated in the circular groove, that is, the inner magnet and the outer magnet are separated by a partition wall, but because the inner magnet and the outer magnet are magnetically attracted to each other and generate a large attractive force, i.e., magnetic force, the attractive force will tightly combine the inner magnet and the outer magnet together, and then tightly combine the outer fan and the inner fan together, so that when the outer fan rotates, it will drive the inner fan to rotate.

[0019] 2. The heat dissipation device for automobile lamps provided by the present invention, when the outside air flows through the outer ventilation cover to rotate the outer fan blades, the outer fan will rotate around the outer shaft, thereby driving the outer magnet to rotate. Due to the attraction between the outer magnet and the inner magnet on the outer fan, the attraction will drive the inner magnet to rotate, thereby driving the inner fan to rotate around the inner shaft, so that the inner fan blades rotate, thereby causing air flow inside the lamp, and then bringing the air flow into the lamp through the inner ventilation cover to cool down the interior of the lamp. This device uses the air flow generated by the vehicle's running and the natural flow of air to drive the outer fan to rotate, and then drives the inner fan to rotate with the help of the magnetic field force, so that the air flow reduces the temperature of the lamp for heat dissipation, reduces the energy consumption of the whole vehicle, and can achieve heat dissipation without the need for additional power input from the vehicle, saving energy, and is not limited by the power supply conditions of the lamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the heat dissipation device for automobile lamps in the present invention;

[0021] Figure 2 It is a schematic diagram of the exploded structure of the heat dissipation device for automobile lamps in the present invention;

[0022] Figure 3 It is a schematic diagram of the exploded structure of the heat dissipation device for automobile lamps in the present invention from another angle;

[0023] Figure 4 It is a schematic structural diagram of the inner fan of the heat dissipation device for automobile lamps in the present invention;

[0024] Figure 5 A schematic structural diagram of the inner fan of the heat dissipation device for automobile lamps in the present invention from another angle;

[0025] Figure 6 A schematic diagram of the structure of an external fan of the heat dissipation device for automobile lamps in the present invention;

[0026] Figure 7 A schematic structural diagram of the external fan of the heat dissipation device for automobile lamps in the present invention from another angle;

[0027] In the figure:

[0028] 1-lamp bottom shell, 101-bottom shell boss portion, 102-bottom shell extension portion, 103-circular hole, 104-circular groove, 105-separation wall, 106-mounting column;

[0029] 2-inner fan, 201-inner fan barrel, 202-inner connecting plate, 203-inner connecting plate edge, 204-inner magnet, 205-inner connecting plate through hole, 206-inner connecting plate boss, 207-inner fan blade, 208-first inner bearing seat, 209-first inner bearing, 210-inner ventilation cover, 211-second inner bearing seat, 212-second inner bearing, 213-inner shaft, 214-first inner shaft shoulder, 215-second inner shaft shoulder;

[0030] 3-external fan, 301-external fan cylinder, 302-external fan boss, 303-external magnet, 304-first through hole, 305-external shaft, 306-first boss, 307-second boss, 308-first groove, 309-second groove, 310-first external bearing seat, 311-first external bearing, 312-external ventilation hood, 313-second external bearing seat, 314-second external bearing, 315-first external shaft shoulder, 316-second external shaft shoulder, 317-external fan blade. DETAILED DESCRIPTION

[0031] The present invention provides a heat dissipation device for automobile lamps, such as Figure 1-Figure 7 As shown, the lamp bottom shell 1 includes a bottom shell boss portion 101 and a bottom shell extension portion 102. The bottom shell boss portion 101 is used to connect with the inside of the lamp, and the inside of the lamp is provided with an inner fan 2. The bottom shell extension portion 102 is used to connect with the outside of the lamp, and the outside of the lamp is provided with an outer fan 3. The bottom shell boss portion 101 is located at the center of the bottom shell extension portion 102. A circular hole 103 is provided in the middle of the bottom shell boss portion 101 for accommodating the inner fan 2. The bottom shell boss portion 101 is provided with a circular groove 104 toward the bottom shell extension portion 102 for accommodating the outer fan 3. The circular groove 104 is located at the outer periphery of the circular hole 103, so that a partition wall 105 is formed between the circular groove 104 and the side wall of the circular hole 103.

[0032] The inner fan 2 includes an inner fan barrel and an inner connecting plate 202 which are integrally formed. The inner fan barrel is placed in the circular hole 103. The inner connecting plate 202 is provided with an inner connecting plate edge 203 protruding from the side wall of the inner fan barrel. A plurality of inner magnets 204 are evenly fixedly connected to the outer wall of the inner fan barrel. In a preferred embodiment, the number of the inner magnets 204 is 6, and the ends of the inner magnets 204 abut against the inner connecting plate edge 203, so that the inner magnets 204 are more firmly connected to achieve connection stability. An inner connecting plate through hole 205 is provided in the middle of the inner connecting plate 202, and an inner connecting plate boss 206 is provided on the edge of the inner connecting plate through hole 205 in the direction away from the inner fan barrel. Inner fan blades 207 are evenly distributed on the inner connecting plate 202. The rotation of the inner fan blades 207 will drive the air flow in the headlight, thereby dissipating heat and cooling the inside of the headlight.

[0033] A first inner bearing seat 208 is provided at the center of the inner bottom wall of the circular hole 103, and a first inner bearing 209 is connected to the first inner bearing seat 208. A second inner bearing seat 211 is provided at the center of the inner ventilation cover 210, and a second inner bearing 212 is connected to the second inner bearing seat 211. One end of the inner rotating shaft 213 is connected to the first inner bearing 209, and the other end of the inner rotating shaft 213 passes through the inner fan barrel and the inner connecting plate through hole 205 in sequence and is connected to the second inner bearing 212, so that the inner fan 2 is fixedly connected to the inner rotating shaft 213, and the inner rotating shaft 213 can rotate between the first inner bearing 209 and the second inner bearing 212, thereby realizing the rotational connection of the inner rotating shaft 213 between the inner ventilation cover 210 and the bottom shell 1 of the car light. The inner shaft 213 is provided with a first inner shaft shoulder 214 and a second inner shaft shoulder 215. The first inner shaft shoulder 214 abuts against the first inner bearing 209, thereby positioning the first inner bearing 209 and preventing the first inner bearing 209 from axially sliding. The second inner shaft shoulder 215 abuts against the inner connecting plate 202, and the second inner bearing 212 abuts against the inner connecting plate boss 206 to position the second inner bearing 212 and prevent the second inner bearing 212 from axially sliding. When the inner fan blades 207 are rotated around the inner shaft 213 by external force, the inner fan 2 generates air flow, thereby dissipating heat and cooling the interior of the lamp through the inner ventilation cover 210.

[0034] The outer fan 3 includes an outer fan barrel 301 and an outer fan boss 302 which are integrally formed. The outer fan barrel 301 can be placed in the circular groove 104. The outer magnet 303 is fixedly connected to the inner side wall of the outer fan barrel 301. The number of the outer magnets 303 is preferably 6, corresponding to the position and number of the inner magnets 204. Since the inner magnet 204 is arranged on the outer side wall of the inner fan barrel accommodated in the circular hole 103, and the outer magnet 303 is arranged on the inner side wall of the outer fan barrel 301 accommodated in the circular groove 104, that is to say, the inner magnet 204 and the outer magnet 303 are separated by the partition wall 105, but since the inner magnet 204 and the outer magnet 303 are magnetically attracted to each other and generate a large attraction force, i.e., magnetic force, the attraction force will tightly combine the inner magnet 204 and the outer magnet 303 together, and then tightly combine the outer fan 3 and the inner fan 2 together, so that when the outer fan 3 rotates, it will drive the inner fan 2 to rotate.

[0035] The external fan boss 302 is provided with a first through hole 304 which is in communication with the external fan cylinder 301 to accommodate the external rotating shaft 305. The external fan 3 is fixedly connected to the external rotating shaft 305. The external fan boss 302 includes a stepped first boss 306 and a second boss 307. The first boss 306 is provided with a first groove 308, and the second boss 307 is provided with a second groove 309. A first outer bearing seat 310 is provided at the center of the bottom shell extension portion 102, and a first outer bearing 311 is connected to the first outer bearing seat 310, and the first outer bearing 311 abuts against the first groove 308, thereby realizing the positioning of the first outer bearing 311, and a second outer bearing seat 313 is provided at the center of the outer ventilation hood 312, and a second outer bearing 314 is connected to the second outer bearing seat 313, one end of the outer rotating shaft 305 is connected to the first outer bearing 311, and the other end of the outer rotating shaft 305 passes through the first through hole 304 and is connected to the second outer bearing 314, thereby realizing the rotational connection between the outer rotating shaft 305 and the second outer bearing 314, and further realizing the rotational connection between the outer rotating shaft 305 and the outer ventilation hood 312 and the bottom shell 1 of the lamp. The outer shaft 305 is provided with a first outer shaft shoulder 315 and a second outer shaft shoulder 316 . The first outer shaft shoulder 315 abuts against the second groove 309 to achieve positioning of the outer shaft 305 . The second outer shaft shoulder 316 abuts against the second outer bearing 314 to achieve positioning of the second outer bearing 314 .

[0036] A plurality of outer fan blades 317 are evenly distributed on the side wall of the outer fan boss 302. When the outside air flows through the outer ventilation cover 312 to rotate the outer fan blades 317, the outer fan 3 will rotate around the outer shaft 305, thereby driving the outer magnet 303 to rotate. Due to the attraction between the outer magnet 303 on the outer fan 3 and the inner magnet 204, the attraction will drive the inner magnet 204 to rotate, thereby driving the inner fan 2 to rotate around the inner shaft 213, so that the inner fan blades 207 rotate, thereby causing the air flow inside the headlight, and then bringing the air flow into the headlight through the inner ventilation cover 210 to cool down and dissipate heat inside the headlight. The device uses the air flow generated by the vehicle running and the natural flow of air to drive the outer fan 3 to rotate, and then drives the inner fan 2 to rotate with the help of the magnetic field force, so as to achieve the air flow to reduce the temperature of the headlight for heat dissipation, reduce the energy consumption of the whole vehicle, and achieve heat dissipation without the need for additional power input from the vehicle, saving energy, and is not limited by the power supply conditions of the headlight.

[0037] In this embodiment, a plurality of mounting columns 106, preferably three, are evenly distributed on the outer wall of the bottom shell boss portion 101. Each mounting column 106 is arranged axially, one end of the mounting column 106 is connected to the inner ventilation hood 210, and the other end of the mounting column 106 is connected to the outer ventilation hood 312. The connection method can be bolts or screws, thereby achieving the connection reliability of the entire device.

[0038] The heat dissipation device for automobile lamps provided by the present invention, in a specific application process, when the vehicle is driving or the air flows naturally, the external fan 3 outside the lamp will introduce the air flow to the external fan 3 through the external ventilation cover 312, driving the rotation of the external fan 3, the rotation of the external fan 3 will drive the rotation of the external magnet 303, the rotation of the external magnet 303 will drive the rotation of the internal magnet 204, and then drive the rotation of the internal fan 2, the rotation of the internal fan 2 realizes the heat dissipation and cooling of the interior of the lamp. Compared with the prior art that uses the electric energy on the vehicle to convert into mechanical energy to achieve heat dissipation, this device saves electric energy and the consumption of the whole vehicle, can achieve heat dissipation without the need for additional power input from the vehicle, is not limited by the power supply conditions of the lamp, and is more cost-effective.

[0039] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A heat dissipation device for an automobile lamp, comprising a lamp bottom shell, characterized in that: The outer side of the car light bottom shell is rotatably connected to an external fan, and a plurality of external magnets are fixedly connected to the external fan. The inner side of the car light bottom shell is rotatably connected to an internal fan, and a plurality of internal magnets corresponding to the external magnets are fixedly connected to the internal fan. Each of the internal magnets is magnetically attracted to each of the external magnets, so that the rotation of the external fan drives the rotation of the internal fan.

2. The heat dissipation device for automobile lamps according to claim 1, characterized in that: The bottom shell of the vehicle lamp includes a bottom shell boss portion and a bottom shell extension portion, the bottom shell boss portion is located at the center of the bottom shell extension portion, a circular hole is provided in the middle of the bottom shell boss portion, and a circular groove is provided on the bottom shell boss portion toward the bottom shell extension portion, and the circular groove is located on the outer periphery of the circular hole.

3. The heat dissipation device for automobile lamps according to claim 2, characterized in that: The circular hole is rotatably connected to one end of the inner rotating shaft, the other end of the inner rotating shaft is rotatably connected to the inner ventilation cover, and the inner rotating shaft is fixedly connected to the inner fan.

4. The heat dissipation device for automobile lamps according to claim 3, characterized in that: The inner fan includes a connected inner fan barrel and an inner connecting plate, the inner fan barrel is placed in the circular hole, the inner connecting plate is provided with an inner connecting plate edge protruding from the side wall of the inner fan barrel, the inner magnet is fixedly connected to the outer wall of the inner fan barrel and the end of the inner magnet abuts against the edge of the inner connecting plate, the middle of the inner connecting plate is provided with an inner connecting plate through hole, the edge of the inner connecting plate through hole is provided with an inner connecting plate boss in the direction away from the inner fan barrel, and the inner connecting plate is evenly distributed with inner fan blades.

5. The heat dissipation device for automobile lamps according to claim 4, characterized in that: A first inner bearing seat is provided at the center of the inner bottom wall of the circular hole, and a first inner bearing is connected to the first inner bearing seat. A second inner bearing seat is provided at the center of the inner ventilation hood, and a second inner bearing is connected to the second inner bearing seat. One end of the inner rotating shaft is connected to the first inner bearing, and the other end of the inner rotating shaft passes through the inner fan barrel and the through hole of the inner connecting plate in sequence and is connected to the second inner bearing.

6. The heat dissipation device for automobile lamps according to claim 5, characterized in that: The inner shaft is provided with a first inner shaft shoulder and a second inner shaft shoulder, the first inner shaft shoulder abuts against the first inner bearing, the second inner shaft shoulder abuts against the inner connecting plate, and the second inner bearing abuts against the inner connecting plate boss.

7. The heat dissipation device for automobile lamps according to claim 2, characterized in that: The center of the bottom shell extension portion is rotatably connected to one end of the outer shaft, the other end of the outer shaft is rotatably connected to the outer ventilation hood, and the outer shaft is fixedly connected to the outer fan.

8. The heat dissipation device for automobile lamps according to claim 7, characterized in that: The external fan includes an external fan barrel and an external fan boss, the external fan barrel is placed in the circular groove, the external magnet is fixedly connected to the inner side wall of the external fan barrel, the external fan boss is provided with a first through hole communicating with the external fan barrel, the external fan boss includes a stepped first boss and a second boss, the first boss is provided with a first groove, the second boss is provided with a second groove, and a plurality of external fan blades are evenly distributed on the side wall of the external fan boss.

9. The heat dissipation device for automobile lamps according to claim 8, characterized in that: A first outer bearing seat is provided at the center of the bottom shell extension portion, a first outer bearing is connected to the first outer bearing seat, the first outer bearing abuts against the first groove, a second outer bearing seat is provided at the center of the outer ventilated cover, a second outer bearing is connected to the second outer bearing seat, one end of the outer shaft is connected to the first outer bearing, and the other end of the outer shaft passes through the first through hole and is connected to the second outer bearing; The outer shaft is provided with a first outer shaft shoulder and a second outer shaft shoulder. The first outer shaft shoulder abuts against the second groove, and the second outer shaft shoulder abuts against the second outer bearing.

10. The heat dissipation device for automobile lamps according to any one of claims 1 to 9, characterized in that: A plurality of mounting columns are evenly distributed on the outer side wall of the boss portion of the bottom shell, one end of the mounting column is connected to the inner ventilation hood, and the other end of the mounting column is connected to the outer ventilation hood.

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