Heat dissipation rear cover matched with vehicle-mounted display screen of new energy automobile

Abstract

The invention discloses a heat dissipation rear cover matched with a vehicle-mounted display screen of a new energy automobile, and relates to the technical field of heat dissipation of electronic equipment, the heat dissipation rear cover comprises a display screen, the display screen is sleeved with a mounting frame, and one end, close to the mounting frame, of the display screen is connected with a circuit board composed of electronic elements; and an air blowing mechanism for carrying out uniform heat dissipation control on the electronic elements is fixedly installed at the end, away from the display screen, of the installation frame, and a heat dissipation rear cover for carrying out heat dissipation on the electronic elements is arranged at the end, close to the air blowing mechanism, of the installation frame. And heat energy generated during air compression can be absorbed, so that the temperature of the compressed air is reduced when the compressed air is discharged and released through the ventilation hose, the cooling effect of the heat dissipation rear cover on the electronic components is improved, meanwhile, secondary compression can be performed on the sprayed air for the electronic components with too high heat, the air outlet amount can be increased, and the heat dissipation efficiency is improved. And the heating part of the electronic component is cooled more uniformly.

Description

Technical Field

[0001] The invention relates to the technical field of heat dissipation of electronic equipment, and in particular to a heat dissipation back cover for a display screen mounted on a new energy vehicle. Background Art

[0002] In-vehicle display devices are usually liquid crystal screens, because they are small and easy to install. They can be installed near the dashboard, on the roof, behind the seatback, or even on the sun visor, making them easy to use in various situations. In addition, in-vehicle display devices often integrate other functions, such as simple power amplifiers, TV reception functions, audio output, etc., and their types and functions are more diverse than TVs or computer monitors.

[0003] After searching, it was found that the prior art publication number is CN108024479A, which discloses a heat dissipation structure of a car-mounted display screen, including a display screen, a back cover is arranged on the back side of the display screen, and two heat dissipation cavities are arranged up and down on the back side of the back cover, and heat dissipation holes are distributed in the heat dissipation cavity; a longitudinal air blow pipe is inserted into the back cover, and a blow head is arranged on the right side of the air blow pipe, and the blow head faces the back side of the display screen; a blow joint is connected to the bottom of the air blow pipe, and the blow joint is located outside and below the back cover. A heat dissipation cavity is arranged for heat dissipation, an aluminum foil heat sink is arranged for further heat dissipation, and an air blow pipe with a blow head arranged on the right side is arranged to blow air to dissipate heat on the back side of the display screen, so that the display screen can be well cooled, and it is suitable for heat dissipation of the display screen.

[0004] When the above-mentioned existing heat dissipation back cover for vehicle-mounted display screen of new energy vehicle cools down the electronic components in the vehicle-mounted display screen, the heat dissipation back cover of the vehicle-mounted display is limited by space, resulting in insufficient heat dissipation of the electronic components in the vehicle-mounted display screen, and heat concentration occurs in the electronic components. The uneven temperature distribution will affect the display effect of the display screen. In addition, since the design of the heat dissipation back cover is not fully utilized, the heat dissipation efficiency is low. Therefore, based on the above search and in combination with the existing problems, a heat dissipation back cover for a vehicle-mounted display screen of new energy vehicle is provided. Summary of the invention

[0005] The purpose of the present invention is to provide a heat dissipation back cover for a new energy vehicle on-board display screen to solve the problems of uneven heat dissipation and low heat dissipation efficiency of electronic components due to space limitations mentioned in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: A heat dissipation back cover for a display screen mounted on a new energy vehicle comprises a display screen, a mounting frame is sleeved on the outside of the display screen, a circuit board composed of electronic components is connected to one end of the display screen close to the mounting frame, a blower mechanism for evenly controlling the heat dissipation of the electronic components is fixedly mounted on one end of the mounting frame away from the display screen, a heat dissipation back cover for dissipating heat from the electronic components is arranged at one end of the mounting frame close to the blower mechanism, a cooling mechanism for increasing the cooling effect of the electronic components is arranged inside the heat dissipation back cover, and an air intake mechanism for preventing dust and blocking and automatically cleaning is arranged at the air intake end of the heat dissipation back cover.

[0007] Furthermore, the air blowing mechanism includes a mounting plate, and the mounting plate is fixedly mounted on the inner wall of the mounting frame close to the heat dissipation back cover, a plurality of air outlet pipes are arranged on the mounting plate, a plurality of mounting vacancies are opened at one end of the air outlet pipe away from the mounting plate, a ventilation hose is fixedly mounted on the inner wall of the air outlet pipe, an air intake pipe is fixedly mounted on the inlet end of the ventilation hose, and a pressure controller is fixedly mounted on one end of the air intake pipe away from the ventilation hose.

[0008] Furthermore, the pressure controller includes a pressure block, in which an air pressure chamber is provided, an elastic rubber ring is fixedly installed on one end of the air pressure chamber close to the air outlet pipe, a linkage block is fixedly installed on the inner wall of the rubber ring, a linkage rod is rotatably installed on one end of the linkage block close to the ventilation hose, and the linkage rod is rotatably installed on the inner wall of the air pressure chamber.

[0009] Furthermore, an expansion ring is fixedly installed at one end of the ventilation hose away from the air inlet pipe, and a control frame is rotatably installed on the inner wall of the installation gap close to the expansion ring. The control frame is rotatably sleeved with an elastic liquid storage ring at one end away from the expansion tube, and the liquid storage ring is slidably sleeved on the outer wall of the ventilation hose, and the linkage rod is rotatably connected to the outer wall of the liquid storage ring at one end away from the linkage block.

[0010] Furthermore, the cooling mechanism includes a connecting pipe, and the connecting pipe is fixedly installed on the air inlet end of the pressure block, transfer pipes are fixedly installed on both ends of the connecting pipe, an air compression pipe is fixedly installed on the end of the transfer pipe away from the connecting pipe, a plurality of compression rings are arranged on the inner wall of the air compression pipe, a heat conducting plate is fixedly installed on the inner wall of the compression ring, a cooling ring is arranged on the outer wall of the compression ring close to the heat conducting plate, a cooling cylinder is sleeved on the outer wall of the transfer pipe, and the cooling ring is communicated with the cooling cylinder.

[0011] Furthermore, a cold water tank is fixedly mounted on the inner wall of the heat dissipation rear cover, a pressure cylinder is arranged at the upper end of the cold water tank, a pressure spring is fixedly mounted on the inner wall of the pressure cylinder, a pressure piston is fixedly mounted on the lower end of the pressure spring, and the pressure piston is slidably arranged on the inner wall of the pressure cylinder.

[0012] Furthermore, a water-passing mechanism is fixedly installed on the side end of the cold water tank, and the water-passing mechanism includes a plurality of shunt pipes, and the shunt pipes are fixedly installed on the lower end of the cold water tank, and the ends of the shunt pipes away from the cold water tank are respectively fixedly installed on the input ends of the liquid storage circle, the cooling circle and the cooling cylinder, and the output ends of the liquid storage circle, the cooling circle and the cooling cylinder are all fixedly installed with return pipes, and the return pipes are all fixedly installed on the side end of the cold water tank.

[0013] Furthermore, the air intake mechanism includes a filter box, and the filter box is fixedly installed at both ends of the heat dissipation rear cover, an air suction pump is fixedly installed at the air outlet end of the filter box, a sliding frame is slidably installed on the inner wall of the filter box, a filter net is fixedly installed on the inner wall of the sliding frame, and a sliding block is slidably installed on the side end of the sliding frame close to the air intake end, a sliding rod is rotatably installed between the sliding blocks, and a cleaning brush is fixedly installed on the side end of the sliding rod close to the filter net.

[0014] Furthermore, a fixing ring is fixedly installed on the side end of the sliding rod near the sliding block, a fixing rod is fixedly installed on the side end of the fixing ring, a stop block is slidably installed on the side end of the sliding block near the fixed rod, and a push rod and a stop rod are fixedly installed on the upper and lower ends of one side of the sliding frame near the sliding block respectively.

[0015] Furthermore, a limiting groove is provided at the side end of the sliding frame near the top rod, a return spring is fixedly installed at one end of the stop block near the limiting groove, a positioning block is fixedly installed at one end of the return spring away from the stop block, a rubber rope is provided between the sliding block and the filter box, and a return block is fixedly installed on the inner wall of the filter box near the limiting groove.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention uses an air pump to transfer the inhaled air to the circuit board, and the air will be compressed during the transfer process, and the heat energy generated when the air is compressed will be absorbed, so that the compressed air has a lower temperature when it is discharged through the ventilation hose, thereby improving the cooling effect of the heat dissipation rear cover on the electronic components, and at the same time, for electronic components with excessive heat, the ejected air can be compressed twice, and the air output can be increased, so that the heat-generating part of the electronic components can be cooled more evenly; 2. When the filter screen is clogged, the sliding rod moves to a suitable position so that the cleaning brush cleans the filter screen, thereby preventing the filter screen from being clogged. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 It is a structural schematic diagram of the connecting pipe in the present invention; Figure 3It is a schematic diagram of the structure of the air outlet duct in the present invention; Figure 4 It is a structural schematic diagram of the liquid storage ring in the present invention; Figure 5 It is a schematic diagram of the structure of the heat dissipation back cover in the present invention; Figure 6 It is a schematic diagram of the structure of the air compression tube in the present invention; Figure 7 It is a structural schematic diagram of the compression ring in the present invention; Figure 8 It is a structural schematic diagram of the cold water storage tank in the present invention; Fig. 9 It is a structural schematic diagram of the filter box in the present invention; Fig.10 For the present invention Fig. 9 The enlarged schematic diagram of point B in FIG. Fig.11 For the present invention Fig. 9 A is an enlarged schematic diagram; Fig.12 It is a structural schematic diagram of the positioning block in the present invention.

[0018] In the figure: 1, display screen; 101, mounting frame; 102, circuit board; 103, heat dissipation back cover; 2. Blower mechanism; 201. Mounting plate; 202. Air outlet pipe; 203. Installation gap; 204. Ventilation hose; 205. Air inlet pipe; 206, expansion ring; 207, heat-conducting telescopic rod; 208, control frame; 209, liquid storage ring; 3. Cooling mechanism; 301. Connecting pipe; 302. Transfer pipe; 303. Air compression pipe; 304. Compression ring; 305. Heat conducting sheet; 306. Cooling ring; 307. Cooling cylinder; 308, cold water tank; 309, cooling pipe; 310, pressure cylinder; 311, pressure spring; 312, pressure piston; 4. Air intake mechanism; 401. Filter box; 402. Air suction pump; 403. Sliding frame; 404. Spring telescopic rod; 405. Filter screen; 406. Sliding block; 407. Gravity block; 408. Linkage rope; 409. Sliding rod; 410. Cleaning brush; 411, fixing ring; 412, winding spring; 413, fixing rod; 414, stopper; 415, top rod; 416, stopper; 417, limiting groove; 418, reset spring; 419, positioning block; 420, rubber rope; 421, reset block; 5. Pressure controller; 501. Pressure block; 502. Air pressure chamber; 503. Rubber ring; 504. Linkage block; 505. Linkage rod; 6. Water supply mechanism; 601. Diversion pipe; 602. Return pipe. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figures 1 to 12 A heat dissipation back cover for a vehicle-mounted display screen of a new energy vehicle comprises a display screen 1, a mounting frame 101 is sleeved on the outside of the display screen 1, a circuit board 102 composed of electronic components is connected to one end of the display screen 1 close to the mounting frame 101, and a blower mechanism 2 for uniformly controlling the heat dissipation of the electronic components is fixedly mounted on one end of the mounting frame 101 away from the display screen 1. Specifically, the blower mechanism 2 changes the shape of the air outlet according to the temperature change of the electronic components at different positions on the circuit board 102, so that the air blown out when the electronic components are cooled can change according to the change of the temperature of the electronic components, thereby making the heat dissipation of the electronic components more uniform. The end of the mounting frame 101 close to the blower mechanism 2 is provided There is a heat dissipation back cover 103 for dissipating heat for electronic components, and a cooling mechanism 3 is arranged inside the heat dissipation back cover 103 for increasing the cooling and heat dissipation effect of the electronic components. Specifically, the cooling mechanism 3 utilizes the principle of cooling when air is compressed and released, and repeatedly compresses the air before blowing it out through the blower mechanism 2, so that the blown air is lower in temperature than the air inhaled under normal circumstances, thereby increasing the cooling and heat dissipation effect of the electronic components in a limited space and improving the heat dissipation and cooling efficiency of the electronic components. The air inlet end of the heat dissipation back cover 103 is provided with an air inlet mechanism 4 for dust prevention, anti-blocking and automatic cleaning. Specifically, the air inlet mechanism 4 can filter dust and debris carried in the air, thereby avoiding blockage of the air inlet.

[0021] See also Figures 1 to 4 The hair dryer mechanism 2 includes a mounting plate 201, and the mounting plate 201 is fixedly mounted on the inner wall of the mounting frame 101 close to the heat dissipation rear cover 103. A plurality of air outlet pipes 202 are arranged on the mounting plate 201. A plurality of mounting vacancies 203 are provided at one end of the air outlet pipe 202 away from the mounting plate 201. A ventilation hose 204 is fixedly mounted on the inner wall of the air outlet pipe 202. The ventilation hose 204 is configured as an elastic pipe. An air inlet pipe 205 is fixedly mounted at the inlet end of the ventilation hose 204. Specifically, air is discharged through the ventilation hose 204 to cool down the electronic components on the circuit board 102. A pressure controller 5 is fixedly mounted on one end of the air inlet pipe 205 away from the ventilation hose 204.

[0022] See also Figures 1 to 4 The pressure controller 5 includes a pressure block 501, in which an air pressure chamber 502 is provided. An elastic rubber ring 503 is fixedly installed at one end of the air pressure chamber 502 close to the air outlet pipe 202, and a linkage block 504 is fixedly installed on the inner wall of the rubber ring 503. A linkage rod 505 is rotatably installed at one end of the linkage block 504 close to the ventilation hose 204, and the linkage rod 505 is rotatably installed on the inner wall of the air pressure chamber 502. Specifically, when the diameter of the ventilation hose 204 becomes smaller, the linkage rod 505 rotates to make the linkage block 504 push the rubber ring 503 to start expanding, thereby increasing the airflow entering the ventilation hose 204, so that the airflow blown out of the ventilation hose 204 at the same time will not produce obvious differences, and the smaller diameter of the ventilation hose 204 can change the airflow pressure so that the blown airflow has a better cooling effect.

[0023] See also Figures 1 to 4 An expansion ring 206 is fixedly installed at one end of the ventilation hose 204 away from the air inlet pipe 205, and the expansion ring 206 does not contact the circuit board 102. The expansion ring 206 is an engineering plastic ring that is easily expanded by heat in the prior art. A retractable heat-conducting telescopic rod 207 is arranged between the expansion ring 206 and the circuit board 102. The heat-conducting telescopic rod 207 quickly transfers the temperature of the electronic components on the circuit board 102 to the expansion ring 206, so that the expansion ring 206 begins to expand by heat. The heat-conducting telescopic rod 207 is retractable, and the outer surface of the heat-conducting telescopic rod 207 is wrapped with a temperature insulation sleeve to prevent the air discharged from the ventilation hose 204 from cooling the heat-conducting telescopic rod 207, resulting in The derived heat is dissipated, and a control frame 208 is rotatably installed on the inner wall of the installation gap 203 close to the expansion ring 206. The end of the control frame 208 away from the expansion tube is rotatably sleeved with an elastic liquid storage ring 209, and the liquid storage ring 209 is slidably sleeved on the outer wall of the ventilation hose 204, and the end of the linkage rod 505 away from the linkage block 504 is rotatably connected to the outer wall of the liquid storage ring 209. Specifically, when the expansion ring 206 is heated and expanded, the control frame 208 starts to rotate, so that the liquid storage ring 209 squeezes the ventilation hose 204, and the diameter of the ventilation hose 204 is reduced to a bucket shape at the squeezed portion, thereby compressing the passing air and compressing the discharged gas to achieve a cooling effect.

[0024] See also Figures 1 to 8The cooling mechanism 3 includes a connecting pipe 301, and the connecting pipe 301 is fixedly installed at the air inlet end of the pressure block 501. The end of the connecting pipe 301 close to the rubber ring 503 is provided with a connecting hole not shown in the figure. The two ends of the connecting pipe 301 are fixedly installed with a transfer pipe 302, and the end of the transfer pipe 302 away from the connecting pipe 301 is fixedly installed with an air compression pipe 303. A plurality of compression rings 304 are arranged on the inner wall of the air compression pipe 303. The compression rings 304 in the air compression pipe 303 are arranged in a bucket shape, so that the air is compressed and then released after passing through the multiple compression rings 304. In order to lower the temperature of the blown air, a heat conducting sheet 305 is fixedly installed on the inner wall of the compression ring 304, a cooling ring 306 is arranged on the outer wall of the compression ring 304 close to the heat conducting sheet 305, a cooling cylinder 307 is sleeved on the outer wall of the transfer tube 302, and the cooling ring 306 is communicated with the cooling cylinder 307. When the air is compressed, the air carries the heat generated during the compression. The cooling ring 306 and the cooling cylinder 307 arranged on the compression ring 304 eliminate the heat carried by the compressed air, so that when the air is released, the temperature of the released air can be lower.

[0025] See also Figures 1 to 8 A cold water tank 308 is fixedly mounted on the inner wall of the heat dissipation rear cover 103, a cooling pipe 309 is fixedly mounted on the side end of the cold water tank 308, and the cooling pipe 309 is twisted and folded and arranged on the outer wall of the heat dissipation rear cover 103, and a placement groove is arranged on the outer wall of the heat dissipation rear cover 103 near the cooling pipe 309, the cooling pipe 309 installed on the side end of the cold water tank 308 allows the water in the cold water tank 308 to circulate and cool through the cooling pipe 309, and a pressure cylinder 310 is arranged on the upper end of the cold water tank 308, and the pressure cylinder 310 A pressure spring 311 is fixedly installed on the inner wall, and a pressure piston 312 is fixedly installed on the lower end of the pressure spring 311, and the pressure piston 312 is slidably arranged on the inner wall of the pressure cylinder 310. Specifically, when the water temperature in the cold water tank 308 rises or the external temperature is too high, causing the water in the cold water tank 308 to expand due to heat, the volume of the cold water tank 308 increases, pushing the pressure piston 312 to move, thereby preventing the water in the cold water tank 308 from expanding and rupturing, causing damage to the cold water tank 308.

[0026] See also Figures 1 to 8The side end of the cold water tank 308 is fixedly installed with a water-passing mechanism 6, which includes a plurality of shunt pipes 601, and the shunt pipes 601 are fixedly installed at the side end of the cold water tank 308, and the ends of the shunt pipes 601 away from the cold water tank 308 are respectively fixedly installed at the input ends of the liquid storage circle 209, the cooling circle 306 and the cooling cylinder 307, and the output ends of the liquid storage circle 209, the cooling circle 306 and the cooling cylinder 307 are all fixedly installed with a return pipe 602, and a one-way valve is fixedly installed between the return pipe 602 and the cold water tank 308, and the one-way valve prevents water from flowing into the liquid storage circle 209, the cooling circle 30 6 and the cooling cylinder 307, and the return pipe 602 is fixedly installed at the side end of the cold water tank 308. Specifically, when the temperature of the cold water in the cold water tank 308 begins to rise, the pressure in the cold water tank 308 increases, so that the water flow is transmitted to the liquid storage circle 209, the cooling circle 306 and the cooling cylinder 307 through the shunt pipe 601. When the water heats up after passing through the liquid storage circle 209, the cooling circle 306 and the cooling cylinder 307, the water is cooled in the return pipe 602 and flows back to the cold water tank 308. The circulation in sequence keeps the water temperature in the liquid storage circle 209, the cooling circle 306 and the cooling cylinder 307 within a suitable range.

[0027] See also Figures 1 to 12 The air intake mechanism 4 includes a filter box 401, and the filter box 401 is fixedly installed at both ends of the heat dissipation rear cover 103, an air suction pump 402 is fixedly installed at the air outlet end of the filter box 401, and the air compression pipe 303 is fixedly installed at the air outlet end of the air suction pump 402, a sliding frame 403 is slidably installed on the inner wall of the filter box 401, a spring telescopic rod 404 is fixedly installed between the sliding frame 403 and the filter box 401, and a filter screen 405 is fixedly installed on the inner wall of the sliding frame 403. After the spring telescopic rod 404 blocks the filter screen 405, the sliding block 406 begins to squeeze the spring telescopic rod 404 to contract. When the blockage on the filter screen 405 is cleared, the spring telescopic rod 404 pushes the sliding frame 403 to return to its original position, and the sliding frame 403 is close to the filter screen 405. A sliding block 406 is slidably installed on the side end near the air inlet end, and a gravity block 407 is slidably installed on the end of the sliding frame 403 away from the sliding block 406, and a linkage rope 408 is fixedly installed between the gravity block 407 and the sliding block 406. When the gravity block 407 and the linkage rope 408 arranged on the sliding frame 403 make the sliding rod 409 no longer pulled, the gravity block 407 pulls the sliding block 406 to move upward under the action of gravity, and the sliding rod 409 is rotatably installed between the sliding blocks 406. A cleaning brush 410 is fixedly installed on the side end of the sliding rod 409 close to the filter 405. Specifically, the sliding block 406 moves up and down on the surface of the sliding frame 403, so that the cleaning brush 410 cleans the dust and debris filtered out of the filter 405.

[0028] See also Figures 1 to 12, a fixing ring 411 is fixedly installed on the side end of the sliding rod 409 near the sliding block 406, and a winding spring 412 is fixedly installed between the fixing ring 411 and the sliding block 406, and the winding spring 412 can make the sliding rod 409 rotate to restore its original state, and a fixing rod 413 is fixedly installed on the side end of the fixing ring 411, and a stopper 414 is slidably installed on the side end of the sliding block 406 near the fixing rod 413, and a push rod 415 and a stopper 416 are fixedly installed on the side of the sliding frame 403 near the sliding block 406, and the push rod 415 is located at the upper half of the sliding frame 403, and the stopper 416 is located at the lower half of the sliding frame 403. Specifically, when the sliding block 406 moves to one end of the stopper 416, the stopper 416 pushes the fixing rod 413 to rotate, so that the fixing rod 413 pushes the stopper 414 to start moving, so that the stopper 414 shrinks toward the inside of the sliding block 406, and pushes the fixing rod 413 to the other end of the stopper 414; When the fixed rod 413 rotates, the sliding rod 409 drives the cleaning brush 410 to start rotating, so that the cleaning brush 410 no longer contacts the filter 405, thereby preventing the dust and debris brushed by the cleaning brush 410 from being contaminated on the surface of the filter 405 again, so that the filter 405 is cleaned more comprehensively; When the sliding block 406 moves to one end of the push rod 415 , the push rod 415 pushes the stopper 414 to start moving, so that the stopper 414 no longer blocks the fixed rod 413 , so that the sliding rod 409 returns to its original state, and the cleaning brush 410 contacts the filter 405 .

[0029] See also Figures 1 to 12 The side end of the sliding frame 403 near the top rod 415 is provided with a limiting groove 417, and the end of the stopper 414 near the limiting groove 417 is fixedly installed with a return spring 418, and the end of the return spring 418 away from the stopper 414 is fixedly installed with a positioning block 419, and the positioning block 419 is matched with the limiting groove 417 in size. A rubber rope 420 is provided between the sliding block 406 and the filter box 401, and a reset block 421 is fixedly installed on the inner wall of the filter box 401 near the limiting groove 417. Specifically, when the sliding block 406 slides to the upper end of the movement, the top rod 415 pushes the stopper When 414 starts to move, the stopper 414 moves and pushes the positioning block 419 into the limiting groove 417, thereby fixing the sliding block 406 at the upper end of the sliding frame 403, so that the sliding block 406 no longer moves. When the filter 405 is blocked and the sliding frame 403 moves to one end of the reset block 421, the reset block 421 pushes the positioning block 419 in the limiting groove 417 to compress the reset spring 418, so that the positioning block 419 no longer blocks the movement of the sliding block 406, so that the rubber rope 420 pulls the sliding block 406 downward, and the cleaning brush 410 cleans the surface of the filter 405.

[0030] The working principle of the present invention is as follows: when the display screen 1 is turned on, the air pump 402 starts to work, the heat dissipation rear cover 103 of the display screen 1 starts to dissipate heat, the air pump 402 starts to inhale air, and the air is filtered through the filter screen 405 in the filter box 401. When the filter screen 405 is blocked, the sliding rod 409 moves to a suitable position, so that the cleaning brush 410 cleans the filter screen 405, thereby preventing the filter screen 405 from being blocked. When the air pump 402 starts to inhale, the gas passes through the air compression tube 303 and is then compressed by the compression ring 304. After the air is compressed, the heat generated during compression in the air is absorbed by the heat conductive sheet 305. After the air is transferred to the transfer tube 302, the cooling cylinder 307 cools the air. The compressed and cooled air is transferred to the ventilation hose 204 through the connecting tube 301 and ejected. The compressed air absorbs heat when released, which reduces the temperature of the ejected air, thereby improving the cooling effect of the heat dissipation rear cover 103 on the electronic components. At the same time, when the temperature of the electronic component part is too high, the heat-conducting telescopic rod 207 transfers the temperature to the expansion ring 206, causing the expansion ring 206 to begin to expand, and the control frame 208 to start to rotate. The control frame 208 squeezes and pushes the liquid storage ring 209 to begin to tighten, so that the inner diameter of the ventilation hose 204 is reduced, and the air intake of the ventilation hose 204 begins to increase, so that the air is compressed again in the ventilation pipe, and the heat generated by the compression is absorbed by the liquid storage ring 209, so that the temperature released by the ventilation hose 204 with the changed caliber is lower than the temperature released by other ventilation hoses 204 with unchanged caliber, thereby locally cooling the locally heated electronic components, thereby preventing the electronic components from being damaged due to excessive temperature.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed in the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A heat dissipation rear cover for a new energy vehicle on-board display screen, comprising a display screen (1), characterized in that: The display screen (1) is provided with a mounting frame (101) on the outside; an end of the display screen (1) close to the mounting frame (101) is connected to a circuit board (102) composed of electronic components; an end of the mounting frame (101) far from the display screen (1) is fixedly provided with a blower mechanism (2) for controlling uniform heat dissipation of the electronic components; an end of the mounting frame (101) close to the blower mechanism (2) is provided with a heat dissipation rear cover (103) for dissipating heat from the electronic components; a cooling mechanism (3) for increasing the cooling and heat dissipation effect of the electronic components is provided inside the heat dissipation rear cover (103); and an air intake end of the heat dissipation rear cover (103) is provided with an air intake mechanism (4) for preventing dust and blocking and automatically cleaning.

2. The heat dissipation rear cover for a new energy vehicle on-board display screen according to claim 1 is characterized in that: The air blowing mechanism (2) comprises a mounting plate (201), and the mounting plate (201) is fixedly mounted on the inner wall of the mounting frame (101) close to the heat dissipation rear cover (103); a plurality of air outlet pipes (202) are arranged on the mounting plate (201); a plurality of mounting vacancies (203) are provided at one end of the air outlet pipe (202) away from the mounting plate (201); a ventilation hose (204) is fixedly mounted on the inner wall of the air outlet pipe (202); an air intake pipe (205) is fixedly mounted at the inlet end of the ventilation hose (204); and a pressure controller (5) is fixedly mounted at one end of the air intake pipe (205) away from the ventilation hose (204).

3. The heat dissipation rear cover for the on-board display screen of a new energy vehicle according to claim 2 is characterized in that: The pressure controller (5) comprises a pressure block (501), wherein a pressure chamber (502) is provided in the pressure block (501), an elastic rubber ring (503) is fixedly mounted on one end of the pressure chamber (502) close to the air outlet pipe (202), a linkage block (504) is fixedly mounted on the inner wall of the rubber ring (503), a linkage rod (505) is rotatably mounted on one end of the linkage block (504) close to the ventilation hose (204), and the linkage rod (505) is rotatably mounted on the inner wall of the pressure chamber (502).

4. The heat dissipation rear cover for the on-board display screen of a new energy vehicle according to claim 3 is characterized in that: An expansion ring (206) is fixedly mounted on one end of the ventilation hose (204) away from the air inlet pipe (205); a control frame (208) is rotatably mounted on the inner wall of the installation gap (203) close to the expansion ring (206); an elastic liquid storage ring (209) is rotatably sleeved on one end of the control frame (208) away from the expansion tube, and the liquid storage ring (209) is slidably sleeved on the outer wall of the ventilation hose (204); and an end of the linkage rod (505) away from the linkage block (504) is rotatably connected to the outer wall of the liquid storage ring (209).

5. The heat dissipation rear cover for the new energy vehicle on-board display screen according to claim 1 is characterized in that: The cooling mechanism (3) comprises a connecting pipe (301), and the connecting pipe (301) is fixedly mounted on the air inlet end of the pressure block (501), transfer pipes (302) are fixedly mounted on both ends of the connecting pipe (301), an air compression pipe (303) is fixedly mounted on one end of the transfer pipe (302) away from the connecting pipe (301), a plurality of compression rings (304) are arranged on the inner wall of the air compression pipe (303), a heat conducting plate (305) is fixedly mounted on the inner wall of the compression ring (304), a cooling ring (306) is arranged on the outer wall of the compression ring (304) close to the heat conducting plate (305), a cooling cylinder (307) is sleeved on the outer wall of the transfer pipe (302), and the cooling ring (306) is communicated with the cooling cylinder (307).

6. The heat dissipation rear cover for the on-board display screen of a new energy vehicle according to claim 5 is characterized in that: A cold water tank (308) is fixedly mounted on the inner wall of the heat dissipation rear cover (103); a pressure cylinder (310) is arranged at the upper end of the cold water tank (308); a pressure spring (311) is fixedly mounted on the inner wall of the pressure cylinder (310); a pressure piston (312) is fixedly mounted at the lower end of the pressure spring (311); and the pressure piston (312) is slidably mounted on the inner wall of the pressure cylinder (310).

7. The heat dissipation rear cover for the on-board display screen of a new energy vehicle according to claim 6 is characterized in that: A water-passing mechanism (6) is fixedly installed at the side end of the cold water tank (308), and the water-passing mechanism (6) comprises a plurality of shunt pipes (601), and the shunt pipes (601) are fixedly installed at the side end of the cold water tank (308), and the ends of the shunt pipes (601) away from the cold water tank (308) are respectively fixedly installed at the input ends of the liquid storage ring (209), the cooling ring (306) and the cooling cylinder (307), and the output ends of the liquid storage ring (209), the cooling ring (306) and the cooling cylinder (307) are all fixedly installed with return pipes (602), and the return pipes (602) are all fixedly installed at the side end of the cold water tank (308).

8. The heat dissipation rear cover for a new energy vehicle on-board display screen according to claim 1 is characterized in that: The air intake mechanism (4) comprises a filter box (401), and the filter box (401) is fixedly mounted at both ends of the heat dissipation rear cover (103); an air suction pump (402) is fixedly mounted at the air outlet end of the filter box (401); a sliding frame (403) is slidably mounted on the inner wall of the filter box (401); a filter screen (405) is fixedly mounted on the inner wall of the sliding frame (403); a sliding block (406) is slidably mounted on the side end of the sliding frame (403) close to the air intake end; a sliding rod (409) is rotatably mounted between the sliding blocks (406); and a cleaning brush (410) is fixedly mounted on the side end of the sliding rod (409) close to the filter screen (405).

9. The heat dissipation rear cover for the on-board display screen of a new energy vehicle according to claim 8, characterized in that: A fixing ring (411) is fixedly mounted on the side end of the sliding rod (409) close to the sliding block (406); a fixing rod (413) is fixedly mounted on the side end of the fixing ring (411); a stopper (414) is slidably mounted on the side end of the sliding block (406) close to the fixing rod (413); and a top rod (415) and a stopper rod (416) are fixedly mounted on one side of the sliding frame (403) close to the sliding block (406).

10. The heat dissipation rear cover for the on-board display screen of a new energy vehicle according to claim 9, characterized in that: A limiting groove (417) is provided at the side end of the sliding frame (403) close to the top rod (415); a return spring (418) is fixedly installed at one end of the stop block (414) close to the limiting groove (417); a positioning block (419) is fixedly installed at one end of the return spring (418) away from the stop block (414); a rubber rope (420) is provided between the sliding block (406) and the filter box (401); and a return block (421) is fixedly installed on the inner wall of the filter box (401) close to the limiting groove (417).

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