Heat dissipation device for automobile lamp

Abstract

The utility model discloses a heat dissipation device for an automobile lamp, which comprises an automobile lamp bottom shell, the outer side of the automobile lamp bottom shell is rotatably connected with an outer fan, the outer fan is fixedly connected with a plurality of outer magnets, the inner side of the automobile lamp bottom shell is rotatably connected with an inner fan, and the inner fan is fixedly connected with a plurality of inner magnets corresponding to the outer magnets. 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 utility model relates to heat dissipation technical field especially is related to a heat dissipation device for automobile lamps. BACKGROUND

[0002] The power of the automobile lamp is large, and a large amount of heat is usually generated during driving. In high-temperature weather or during daytime driving, excessive heat can cause irreversible damage to the lamp. Therefore, a heat dissipation device needs to be installed to dissipate heat from the automobile lamp to ensure the safety of driving under illumination.

[0003] In the prior art, a heat dissipation fan is generally used to dissipate heat from the automobile lamp, or a heat dissipation fan is used to accelerate air flow to dissipate heat from the lamp, thereby prolonging the service life of the automobile lamp and improving the efficiency of lamp illumination. However, the heat dissipation fan used in the prior art is powered by the vehicle body power supply. The motor is driven by the vehicle body power to rotate, and the motor drives the heat dissipation fan to rotate to drive air flow, thereby reducing the temperature of the vehicle lamp and achieving the effect of heat dissipation. That is, the heat dissipation fan in the prior art needs to convert electrical energy into mechanical energy to achieve heat dissipation. This way increases the energy consumption of the whole vehicle. When the electrical energy of the whole vehicle is insufficient, the driving power of the heat dissipation fan will be reduced, thereby affecting the normal operation of the heat dissipation fan and the heat dissipation effect. SUMMARY

[0004] The utility model discloses a heat dissipation device for automobile lamps, which utilizes the air flow generated by the driving of the vehicle and the natural flow of air to drive the rotation of the outer fan. With the help of magnetic field force, the inner fan is driven to rotate, thereby reducing the temperature of the vehicle lamp through air flow to dissipate heat. The energy consumption of the whole vehicle is reduced, and the heat dissipation can be achieved without additional input of power by the vehicle, thereby saving energy and not being limited by the power supply conditions of the vehicle lamp.

[0005] To achieve the above-mentioned purpose, the utility model provides the following scheme:

[0006] The utility model provides a heat dissipation device for automobile lamps, which comprises a vehicle lamp bottom shell, an outer fan is rotatably connected to the outer side of the vehicle lamp bottom shell, a plurality of outer magnets are fixedly connected to the outer fan, an inner fan is rotatably connected to the inner side of the vehicle lamp bottom shell, a plurality of inner magnets corresponding to the outer magnets are fixedly connected to the inner fan, each inner magnet is magnetically attracted to each outer magnet, and the rotation of the outer fan drives the rotation of the inner fan.

[0007] Preferably, the vehicle lamp bottom shell comprises a bottom shell boss part and a bottom shell extension part, the bottom shell boss part is located at the center of the bottom shell extension part, a circular hole is arranged in the middle of the bottom shell boss part, a circular groove is arranged on the bottom shell boss part towards the bottom shell extension part, and the circular groove is located at the outer periphery of the circular hole.

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

[0009] Preferably, the inner fan comprises an inner fan cylinder and an inner connecting plate, the inner fan cylinder is arranged 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 cylinder, the inner magnet is fixed to the outer side wall of the inner fan cylinder and the end of the inner magnet abuts against the inner connecting plate edge, the middle part 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 cylinder, and the inner connecting plate is uniformly provided with inner fan blades.

[0010] Preferably, the center of the inner bottom wall of the circular hole is provided with a first inner bearing seat, the first inner bearing seat is connected to a first inner bearing, the center of the inner ventilation cover is provided with a second inner bearing seat, the second inner bearing seat is connected to a second inner bearing, 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 cylinder and the inner connecting plate through hole in sequence and is connected to the second inner bearing.

[0011] Preferably, the inner rotating shaft is provided with a first inner rotating shaft shoulder and a second inner rotating shaft shoulder, the first inner rotating shaft shoulder abuts against the first inner bearing, the second inner rotating 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 is rotatably connected to one end of an outer rotating shaft, the other end of the outer rotating shaft is rotatably connected to an outer ventilation cover, and the outer rotating shaft is fixedly connected to the outer fan.

[0013] Preferably, the outer fan comprises an outer fan cylinder and an outer fan boss, the outer fan cylinder is arranged in the circular groove, the outer magnet is fixed to the inner side wall of the outer fan cylinder, the outer fan boss is provided with a first through hole communicating with the outer fan cylinder, the outer fan boss comprises a first boss and a second boss in a stepped shape, the first boss is provided with a first recess, the second boss is provided with a second recess, and the side wall of the outer fan boss is uniformly provided with a plurality of outer fan blades.

[0014] Preferably, the center of the bottom shell extension is provided with a first outer bearing seat, the first outer bearing seat is connected to a first outer bearing, the first outer bearing abuts in the first recess, the center of the outer ventilation cover is provided with a second outer bearing seat, the second outer bearing seat is connected to a second outer bearing, one end of the outer rotating shaft is connected to the first outer bearing, and the other end of the outer rotating shaft passes through the first through hole and is connected to the second outer bearing.

[0015] The outer rotating shaft is provided with a first outer rotating shaft shoulder and a second outer rotating shaft shoulder, the first outer rotating shaft shoulder is in abutment with the second groove, and the second outer rotating shaft shoulder is in abutment with the second outer bearing.

[0016] Preferably, the outer side wall of the bottom shell boss portion is uniformly distributed with a plurality of mounting columns, one end of the mounting column is connected with the inner ventilation cover, and the other end of the mounting column is connected with the outer ventilation cover.

[0017] The utility model discloses relative to prior art has obtained the following beneficial technical effect:

[0018] 1, the heat dissipation device for car lamps and lanterns provided by the utility model, the inner magnet is arranged on the outer side wall of the inner fan cylinder accommodated in the round hole, the outer magnet is arranged on the inner side wall of the outer fan cylinder accommodated in the round groove, that is to say, the inner magnet and the outer magnet are separated by the partition wall, but because the inner magnet and the outer magnet are magnetically attracted and generate a great attractive force, that is, 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, and then make the outer fan rotate and drive the inner fan to rotate.

[0019] 2, the heat dissipation device for car lamps and lanterns provided by the utility model, when the outside air flows, the outer fan will rotate around the outer rotating shaft when the outer fan blade rotates through the outer ventilation cover, and then drive the outer magnet to rotate, because the attractive force between the outer magnet on the outer fan and the inner magnet will drive the inner magnet to rotate, and then drive the inner fan to rotate around the inner rotating shaft, so that the inner fan blade rotates, to cause the air flow in the car lamp, and then bring the air flow into the car lamp through the inner ventilation cover to cool and heat the car lamp. The device utilizes the air flow generated by the vehicle driving and the natural air flow to drive the outer fan to rotate, and then drives the inner fan to rotate by means of magnetic field force, realizes the air flow to reduce the temperature of the car lamp to cool, reduces the energy consumption of the whole vehicle, and realizes cooling without additional input power of the vehicle, saves energy, and is not limited by the power supply condition of the car lamp. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the whole structure schematic diagram of the heat dissipation device for car lamps and lanterns in the utility model;

[0021] Figure 2 It is the explosion structure schematic diagram of the heat dissipation device for car lamps and lanterns in the utility model;

[0022] Figure 3 It is the explosion structure schematic diagram of the heat dissipation device for car lamps and lanterns in the utility model from another angle;

[0023] Figure 4 It is the structure schematic diagram of the inner fan of the heat dissipation device for car lamps and lanterns in the utility model;

[0024] Figure 5 It is another angle structural schematic view of the inner fan of the heat dissipation device for automobile lamps in the utility model;

[0025] Figure 6 It is structural schematic view of the outer fan of the heat dissipation device for automobile lamps in the utility model;

[0026] Figure 7 It is another angle structural schematic view of the outer fan of the heat dissipation device for automobile lamps in the utility model;

[0027] In the drawing,

[0028] 1-lamp bottom shell, 101-bottom shell boss part, 102-bottom shell extension part, 103-round hole, 104-round groove, 105-isolation wall, 106-mounting column;

[0029] 2-inner fan, 201-inner fan cylinder, 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 rotating shaft, 214-first inner rotating shaft shoulder, 215-second inner rotating shaft shoulder;

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

[0031] The utility model provides a kind of heat dissipation device for automobile lamps, as shown in Figures 1-7 It is another angle structural schematic view of the inner fan of the heat dissipation device for automobile lamps in the utility model; The bottom shell boss part 101 is located at the center of the bottom shell extension part 102, the middle part of the bottom shell boss part 101 is provided with a round hole 103 for accommodating the inner fan 2, and the bottom shell boss part 101 is provided with a round groove 104 facing the direction of the bottom shell extension part 102 for accommodating the outer fan 3. The round groove 104 is located at the outer periphery of the round hole 103, so that an isolation wall 105 is formed between the side walls of the round groove 104 and the round hole 103.

[0032] The inner fan 2 comprises an integrally formed inner fan cylinder and an inner connecting plate 202, the inner fan cylinder is arranged 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 cylinder, the outer side wall of the inner fan cylinder is uniformly fixed with a plurality of inner magnets 204, in the preferred embodiment, the number of the inner magnets 204 is 6, and the end of the inner magnet 204 abuts on the inner connecting plate edge 203, so that the connection of the inner magnet 204 is more firm to realize the stability of the connection. The middle part of the inner connecting plate 202 is provided with an inner connecting plate through hole 205, the edge of the inner connecting plate through hole 205 is provided with an inner connecting plate boss 206 in the direction away from the inner fan cylinder, the inner connecting plate 202 is uniformly distributed with inner fan leaves 207, the rotation of the inner fan leaves 207 will drive the air flow in the car lamp, and then heat dissipation and cooling of the inside of the car lamp.

[0033] The center of the inner bottom wall of the circular hole 103 is provided with a first inner bearing seat 208, the first inner bearing seat 208 is connected with a first inner bearing 209, the center of the inner ventilation cover 210 is provided with a second inner bearing seat 211, the second inner bearing seat 211 is connected with a second inner bearing 212, one end of an inner rotating shaft 213 is connected with the first inner bearing 209, the other end of the inner rotating shaft 213 passes through the inner connecting plate through hole 205 in turn and is connected with the second inner bearing 212, so that the inner fan 2 is fixed 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, realizing the rotating connection of the inner rotating shaft 213 between the inner ventilation cover 210 and the car lamp bottom shell 1. The inner rotating shaft 213 is provided with a first inner rotating shaft shoulder 214 and a second inner rotating shaft shoulder 215, the first inner rotating shaft shoulder 214 abuts with the first inner bearing 209, realizing the positioning of the first inner bearing 209 and preventing the axial sliding of the first inner bearing 209. The second inner rotating shaft shoulder 215 abuts with the inner connecting plate 202, the second inner bearing 212 abuts with the inner connecting plate boss 206, realizing the positioning of the second inner bearing 212 and preventing the axial sliding of the second inner bearing 212. When the inner fan leaves 207 are rotated around the inner rotating shaft 213 by external force, the inner fan 2 will produce air flow, and then heat dissipation and cooling of the inside of the car lamp through the inner ventilation cover 210.

[0034] The outer fan 3 comprises an integrally formed outer fan cylinder 301 and an outer fan boss 302, the outer fan cylinder 301 is capable of being placed in the circular groove 104, the outer magnets 303 are fixedly connected to the inner side wall of the outer fan cylinder 301, and the number of the outer magnets 303 is preferably six, corresponding to the position and number of the inner magnets 204. Since the inner magnets 204 are arranged on the outer side wall of the inner fan cylinder accommodated in the circular hole 103, and the outer magnets 303 are arranged on the inner side wall of the outer fan cylinder 301 accommodated in the circular groove 104, that is, the inner magnets 204 and the outer magnets 303 are separated by the partition wall 105, but since the inner magnets 204 and the outer magnets 303 are magnetically attracted to each other and generate a large attractive force, that is, a magnetic force, the attractive force tightly combines the inner magnets 204 and the outer magnets 303, and further tightly combines the outer fan 3 and the inner fan 2, so that the outer fan 3 drives the inner fan 2 to rotate when the outer fan 3 rotates.

[0035] The outer fan boss 302 is provided with a first through hole 304 communicating with the outer fan cylinder 301 to accommodate an outer rotating shaft 305, the outer fan 3 is fixedly connected to the outer rotating shaft 305, the outer fan boss 302 comprises a stepped first boss 306 and a second boss 307, the first boss 306 is provided with a first recess 308, and the second boss 307 is provided with a second recess 309. The center of the bottom shell extension part 102 is provided with a first outer bearing seat 310, the first outer bearing seat 310 is connected with a first outer bearing 311, the first outer bearing 311 abuts in the first recess 308, thereby positioning the first outer bearing 311, the center of the outer ventilation cover 312 is provided with a second outer bearing seat 313, the second outer bearing seat 313 is connected with a second outer bearing 314, one end of the outer rotating shaft 305 is connected with the first outer bearing 311, the other end of the outer rotating shaft 305 passes through the first through hole 304 and is connected with the second outer bearing 314, thereby realizing the rotating connection of the outer rotating shaft 305 between the first outer bearing 311 and the second outer bearing 314, and further realizing the rotating connection of the outer rotating shaft 305 between the outer ventilation cover 312 and the car lamp bottom shell 1. The outer rotating shaft 305 is provided with a first outer rotating shaft shoulder 315 and a second outer rotating shaft shoulder 316, the first outer rotating shaft shoulder 315 abuts with the second recess 309, thereby positioning the outer rotating shaft 305, and the second outer rotating shaft shoulder 316 abuts with the second outer bearing 314, thereby positioning the second outer bearing 314.

[0036] The side wall of the outer fan boss 302 is uniformly provided with a plurality of outer fan blades 317, when external air flows through the outer air duct 312 to drive the outer fan blades 317 to rotate, the outer fan 3 rotates around the outer rotating shaft 305, and then drives 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 inner magnet 204 is driven to rotate, and then the inner fan 2 rotates around the inner rotating shaft 213, so that the inner fan blades 207 rotate to cause the air flow in the vehicle lamp, and then the air flow is brought into the vehicle lamp through the inner air duct 210 to cool and heat the vehicle lamp.

[0037] In the embodiment, the outer side wall of the bottom shell boss part 101 is uniformly provided with a plurality of mounting columns 106, preferably three, each mounting column 106 is arranged in the axial direction, one end of the mounting column 106 is connected with the inner air duct 210, and the other end of the mounting column 106 is connected with the outer air duct 312, and the connection mode can adopt bolt or screw connection mode, so that the connection reliability of the whole device is realized.

[0038] The heat dissipation device for the automobile lamp provided by the utility model, in the specific application process, under the condition that the vehicle is running or the air is flowing naturally, the outer fan 3 of the vehicle lamp will introduce the air flow into the outer fan 3 through the outer air duct 312 to drive the rotation of the outer fan 3, the rotation of the outer fan 3 will drive the rotation of the outer magnet 303, the rotation of the outer magnet 303 will drive the rotation of the inner magnet 204, and then drive the rotation of the inner fan 2, and the rotation of the inner fan 2 realizes the heat dissipation and cooling of the vehicle lamp. Compared with the prior art that converts the electric energy on the vehicle into mechanical energy to realize heat dissipation, the device saves the electric energy and the consumption of the whole vehicle, does not need to input additional power to realize heat dissipation, is not limited by the power supply condition of the vehicle lamp, and is more cost-saving.

[0039] The utility model has applied specific examples to the principle and implementation mode of the utility model, and the above embodiment is only used for helping understanding the method and core idea of the utility model, and for the general technical personnel in the field, according to the idea of the utility model, the specific implementation mode and application range will have the change. In conclusion, the content of the specification should not be understood as the limitation of the utility model.

Claims

1. A heat dissipating device for an automobile lamp, comprising a lamp bottom shell, characterized in that: The outer fan is fixedly connected with a plurality of outer magnets, the inner fan is rotatably connected to the inner side of the lamp bottom shell, and a plurality of inner magnets corresponding to the outer magnets are fixedly connected to the inner fan.

2. The heat sink for an automotive lamp according to claim 1, characterized by: The lamp bottom shell includes a bottom shell boss part and a bottom shell extension part, the bottom shell boss part is located at the center of the bottom shell extension part, a circular hole is arranged in the middle of the bottom shell boss part, and a circular groove is arranged on the bottom shell boss part towards the bottom shell extension part.

3. The heat sink for an automotive lamp according to claim 2, characterized by: One end of the inner rotating shaft is rotatably connected to the circular hole, and the other end of the inner rotating shaft is rotatably connected to an inner ventilation cover.

4. The heat sink for an automotive lamp according to claim 3, characterized by: The inner fan includes an inner fan cylinder and an inner connecting plate connected to each other, the inner fan cylinder is arranged in the circular hole, an inner connecting plate edge protruding from the side wall of the inner fan cylinder is arranged on the inner connecting plate, the inner magnets are fixedly connected to the outer side wall of the inner fan cylinder and the end of the inner magnet abuts against the inner connecting plate edge, an inner connecting plate through hole is arranged in the middle of the inner connecting plate, an inner connecting plate boss is arranged on the edge of the inner connecting plate through hole and away from the inner fan cylinder, and inner fan leaves are uniformly arranged on the inner connecting plate.

5. The heat sink for an automotive lamp according to claim 4, characterized by: A first inner bearing seat is arranged at the center of the inner bottom wall of the circular hole, a first inner bearing is connected to the first inner bearing seat, a second inner bearing seat is arranged at the center of the inner ventilation cover, 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 cylinder and the inner connecting plate through hole in sequence and is connected to the second inner bearing.

6. The heat sink for an automotive lamp according to claim 5, characterized by: First and second inner rotating shaft shoulder parts are arranged on the inner rotating shaft, the first inner rotating shaft shoulder part abuts against the first inner bearing, the second inner rotating shaft shoulder part abuts against the inner connecting plate, and the second inner bearing abuts against the inner connecting plate boss.

7. The heat sink for an automotive lamp according to claim 6, characterized by: One end of the outer rotating shaft is rotatably connected to the center of the bottom shell extension part, and the other end of the outer rotating shaft is rotatably connected to an outer ventilation cover.

8. The heat sink for an automotive lamp according to claim 7, characterized by: The outer fan includes an outer fan cylinder and an outer fan boss, the outer fan cylinder is arranged in the circular groove, the outer magnets are fixedly connected to the inner side wall of the outer fan cylinder, a first through hole is arranged on the outer fan boss and communicates with the outer fan cylinder, the outer fan boss includes a first boss and a second boss in a stepped shape, a first groove is arranged in the first boss, a second groove is arranged in the second boss, and a plurality of outer fan leaves are uniformly arranged on the side wall of the outer fan boss.

9. The heat sink for an automotive lamp according to claim 8, characterized by: A first outer bearing seat is arranged at the center of the bottom shell extension part, a first outer bearing is connected to the first outer bearing seat, the first outer bearing abuts in the first groove, a second outer bearing seat is arranged at the center of the outer ventilation 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 passes through the first through hole and is connected to the second outer bearing. The outer rotating shaft is provided with a first outer rotating shaft shoulder and a second outer rotating shaft shoulder, the first outer rotating shaft shoulder is in abutment with the second groove, and the second outer rotating shaft shoulder is in abutment with the second outer bearing.

10. The heat sink for an automotive lamp according to claim 9, characterized by: The outer side wall of the bottom shell boss portion is uniformly provided with a plurality of mounting columns, one end of the mounting column is connected with the inner ventilation cover, and the other end of the mounting column is connected with the outer ventilation cover.

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