Temperature protection method based on temperature detection circuit and electronic equipment

Abstract

The invention discloses a temperature protection method based on a temperature detection circuit and electronic equipment, and belongs to the technical field of electronic devices.The electronic equipment comprises a supporting base and an air intake and exhaust assembly installed on the supporting base, a supporting assembly is installed in the air intake and exhaust assembly, a rotating column is installed on the supporting assembly, and a fan is installed on the rotating column; a dustproof net is installed on the air inlet and outlet assembly, a rotating assembly is installed on the supporting base, a cam is installed on the rotating assembly, a reset assembly is installed on the supporting base, and a main extrusion block is installed on the reset assembly in a sliding mode. The motor is started to drive the rotating rod to rotate, then the cam is driven to rotate, and the cam rotates to drive the main extrusion block to move. According to the invention, the circuit in the to-be-protected electronic equipment can be effectively protected.

Description

Technical Field

[0001] This invention relates to temperature protection methods and electronic devices for circuits, and particularly to temperature protection methods and electronic devices based on temperature detection circuits, belonging to the field of electronic circuit technology. Background Technology

[0002] Common temperature protection measures for electronic devices all rely on temperature detection. In many solutions, the main control chip has a built-in temperature sensor that can obtain accurate temperature indications and execute temperature protection algorithms based on the temperature conditions.

[0003] Existing temperature protection electronic devices based on temperature detection circuits require heat dissipation protection during actual use. When the circuit temperature is too high, it can lead to circuit damage and affect its lifespan. However, with traditional heat dissipation components, external dust can easily enter the device through the heat dissipation vents and adhere to the circuit. Over time, the accumulation of dust will reduce the reliability and lifespan of the circuit. Summary of the Invention

[0004] The main objective of this invention is to solve the technical problem of heat dissipation protection for circuits in electronic devices.

[0005] The objective of this invention can be achieved by adopting the following technical solution: A temperature protection method and electronic device based on a temperature detection circuit includes a support base and an intake / exhaust assembly mounted on the support base. The intake / exhaust assembly houses the support component, a rotating column is mounted on the support component, a fan is mounted on the rotating column, a dust filter is mounted on the intake / exhaust assembly, a rotating component is mounted on the support base, a cam is mounted on the rotating component, a reset component is mounted on the support base, a main extrusion block is slidably mounted on the reset component, a baffle is slidably mounted on the dust filter, a cleaning brush is mounted on the baffle, a base column is mounted on the cleaning brush, an auxiliary extrusion block is mounted at one end of the base column, a rack is mounted on the baffle, a gear meshing with the rack is mounted on the rotating column, and a temperature detection component is mounted on the support base.

[0006] Preferably, the support base includes a placement frame, a side plate, and a side frame, with the side frame mounted on the placement frame and the side plate mounted on the side frame.

[0007] Preferably, the intake and exhaust assembly includes an air pipe, a support frame, and a base rod. The base rod is mounted on the side frame, and the support frame is mounted on one end of the base rod. The air pipe is mounted on the support frame.

[0008] Preferably, the rotating assembly includes a motor, an outer frame, a first side column, and a rotating rod. The first side column is mounted on the side plate, the outer frame is mounted on one end of the first side column, the motor is mounted on the outer frame, the rotating rod is mounted on the output end of the motor, and the cam is mounted on the rotating rod.

[0009] Preferably, the reset assembly includes a guide rod, a connecting plate, a spring, a guide ring, and a support rod. The guide rod is mounted on the side plate, the guide ring is slidably mounted on the guide rod, and the support rod is mounted on the guide ring. One end of the support rod is connected to the main extrusion block. The connecting plate is mounted on the guide rod, and the connecting plate is connected to the guide ring via a spring.

[0010] Preferably, a side rod is installed on the baffle, and one end of the side rod is connected to the cleaning brush.

[0011] Preferably, the temperature detection component includes a top plate, a support rod, a mounting plate, bolts, and a temperature sensor. The mounting plate is installed on the placement frame, the support rod is installed on the mounting plate, the top plate is installed at one end of the support rod, the temperature sensor is installed on the top plate, and the mounting plate is connected to the placement frame by bolts.

[0012] Preferably, a connecting post is installed on the baffle, a rack is installed at one end of the connecting post, and a connecting tube that cooperates with the rack is installed on the air pipe.

[0013] Preferably, the support assembly includes a support ring and a second side column, the second side column is installed on the air tube, a support ring is installed at one end of the second side column, and the rotating column is rotatably installed on the support ring.

[0014] The protection method for temperature protection electronic devices based on temperature detection circuits includes the following steps: Step 1: Place the electronic device to be protected in the placement frame, align the air tube with the exhaust port and air inlet on the electronic device, insert the temperature sensor into the temperature detection interface of the electronic device, and limit the installation of the temperature sensor with bolts. Step Two: The temperature sensor is connected to the control circuit. When the temperature exceeds the limit, the motor is triggered. That is, when the temperature sensor senses that the circuit temperature in the electronic device to be protected has risen, the motor starts and drives the rotating rod to rotate. When the rotating rod rotates, it drives the cam to rotate. When the cam rotates, it squeezes the main extrusion block, which in turn drives the main extrusion block to move. The main extrusion block squeezes the auxiliary extrusion block, which in turn drives the cleaning brush to move. When the cleaning brush moves, it drives the baffle to move, which in turn drives the rack to move. When the rack moves, it drives the gear to rotate, which in turn drives the fan to rotate. One fan delivers outside air to the electronic device to be protected, and the other fan dissipates the heat from the electronic device to be protected, thus providing circuit heat dissipation protection for the electronic device to be protected.

[0015] Beneficial technical effects of the present invention: 1. According to the temperature protection method and electronic device based on temperature detection circuit of the present invention, by setting a dustproof net, it is convenient to protect the circuit in the electronic device to be protected from dust, so that external dust is not easy to enter the electronic device to be protected and cause damage to the circuit. When the motor starts, it drives the rotating rod to rotate, which in turn drives the cam to rotate. When the cam rotates, it drives the main extrusion block to move, which in turn extrudes the auxiliary extrusion block. The auxiliary extrusion block is extruded and rises, which in turn drives the cleaning brush to move. When the cleaning brush moves, it cleans the dustproof net, so that the dustproof net is not easily blocked and affects the heat dissipation effect.

[0016] 2. By setting up a motor, the motor starts and drives the cam to rotate, which in turn drives the main extrusion block to move. The main extrusion block drives the auxiliary extrusion block to move, which in turn drives the cleaning brush to move. When the cleaning brush moves, it drives the baffle to move. When the baffle moves, it drives the rack to move. When the rack moves, it drives the gear to rotate. When the gear rotates, it drives the rotating column to rotate, which in turn drives the fan to rotate. This provides heat dissipation protection for the circuits in the protected electronic equipment. In addition, the cleaning brush can clean the dust filter while dissipating heat, thereby improving the heat dissipation effect. When the dust filter is blocked, there is no need to stop the heat dissipation and disassemble the dust filter for cleaning, which effectively improves the work efficiency. By setting the cam and spring to work together, the cleaning brush cleans the dust filter back and forth, and the fan rotates to dissipate heat. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the mounting plate structure of the present invention; Figure 3 This is a schematic diagram of the placement frame structure of the present invention; Figure 4 This is a schematic diagram of the side frame structure of the present invention; Figure 5 This is a schematic diagram of the cam structure of the present invention; Figure 6 This is a schematic diagram of the main extrusion block structure of the present invention; Figure 7 This is a schematic diagram of the cleaning brush structure of the present invention; Figure 8 This is a schematic diagram of the rack structure of the present invention; Figure 9 This is a schematic diagram of the gear structure of the present invention; Figure 10 This is a schematic diagram of the temperature sensor structure of the present invention; Figure 11 This is a schematic diagram of the fan structure of the present invention.

[0018] In the diagram: 1. Placement frame; 11. Side plate; 12. Side frame; 2. Air pipe; 21. Support frame; 22. Bottom rod; 23. Through pipe; 3. Dustproof net; 4. Motor; 41. Outer frame; 42. First side column; 43. Rotating rod; 5. Guide rod; 51. Connecting plate; 52. Spring; 53. Guide ring; 54. Support rod; 55. Main extrusion block; 56. Cam; 57. Auxiliary extrusion block; 58. Bottom column; 6. Cleaning brush; 61. Side rod; 62. Stop bar; 7. Top plate; 71. Lifting rod; 72. Mounting plate; 73. Bolt; 74. Temperature sensor; 8. Rack; 81. Connecting column; 83. Gear; 9. Support ring; 91. Rotating column; 92. Second side column; 93. Fan. Detailed Implementation

[0019] To enable those skilled in the art to understand the technical solution of the present invention more clearly, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0020] like Figures 1-11 As shown, the temperature protection method and electronic device based on a temperature detection circuit provided in this embodiment include a support base and an intake and exhaust assembly mounted on the support base. The intake and exhaust assembly has a support assembly installed inside it. A rotating column 91 is mounted on the support assembly, and a fan 93 is mounted on the rotating column 91. A dustproof net 3 is mounted on the intake and exhaust assembly. A rotating assembly is mounted on the support base, and a cam 56 is mounted on the rotating assembly. A reset assembly is mounted on the support base, and a main extrusion block 55 is slidably mounted on the reset assembly. A baffle 62 is slidably mounted on the dustproof net 3, and a cleaning brush 6 is mounted on the baffle 62. A base column 58 is mounted on the cleaning brush 6, and an auxiliary extrusion block 57 is mounted at one end of the base column 58. A rack 8 is mounted on the baffle 62, and a gear 83 that meshes with the rack 8 is mounted on the rotating column 91. A temperature detection assembly is mounted on the support base.

[0021] The support base includes a placement frame 1, a side plate 11, and a side frame 12. The side frame 12 is mounted on the placement frame 1, and the side plate 11 is mounted on the side frame 12. The air intake and exhaust assembly includes an air pipe 2, a support frame 21, and a base rod 22. The base rod 22 is mounted on the side frame 12, and the support frame 21 is mounted on one end of the base rod 22. The air pipe 2 is mounted on the support frame 21. Air pipes 2 are provided on both sides of the electronic device. There are two air pipes. A fan 93 is installed inside each of the two air pipes 2. The fan 93 in one air pipe 2 is an intake fan, and the fan 93 in the other air pipe 2 is an exhaust fan.

[0022] The rotating assembly includes a motor 4, an outer frame 41, a first side column 42, and a rotating rod 43. The first side column 42 is mounted on the side plate 11, and the outer frame 41 is mounted on one end of the first side column 42. The motor 4 is mounted on the outer frame 41, and the rotating rod 43 is mounted on the output end of the motor 4. A cam 56 is mounted on the rotating rod 43. The resetting assembly includes a guide rod 5, a connecting plate 51, a spring 52, a guide ring 53, and a support rod 54. The guide rod 5 is mounted on the side plate 11, and the guide ring 53 is slidably mounted on the guide rod 5. The support rod 54 is mounted on the guide ring 53, and one end of the support rod 54 is connected to the main extrusion block 55. The connecting plate 51 is mounted on the guide rod 5, and the connecting plate 51 is connected to the guide ring 53 through the spring 52. The side rod 61 is mounted on the stop bar 62, and one end of the side rod 61 is connected to the cleaning brush 6.

[0023] The temperature detection assembly includes a top plate 7, a lifting rod 71, a mounting plate 72, bolts 73, and a temperature sensor 74. The mounting plate 72 is installed on the placement frame 1, the lifting rod 71 is installed on the mounting plate 72, the top plate 7 is installed at one end of the lifting rod 71, the temperature sensor 74 is installed on the top plate 7, and the mounting plate 72 is connected to the placement frame 1 by bolts 73.

[0024] By setting up the dustproof net 3, it is easy to protect the circuits in the electronic device to be protected from dust, making it difficult for external dust to enter the electronic device to be protected and cause damage to the circuits.

[0025] When motor 4 starts, it drives the rotating rod 43 to rotate, which in turn drives the cam 56 to rotate. When the cam 56 rotates, it drives the main extrusion block 55 to move, which in turn extrudes the auxiliary extrusion block 57. The auxiliary extrusion block 57 is extruded and rises, which in turn drives the cleaning brush 6 to move. When the cleaning brush 6 moves, it cleans the dustproof net 3, making the dustproof net 3 less likely to be blocked and affect the heat dissipation effect. By setting the placement frame 1, side plate 11 and side frame 12 to cooperate with each other, the electronic equipment to be protected can be supported.

[0026] By setting the bottom rod 22 and the support frame 21 to cooperate with each other, the air pipe 2 can be supported. By setting the outer frame 41 and the first side column 42 to cooperate with each other, the motor 4 can be supported. The rotating rod 43 is rotatably connected to the side plate 11 through the bearing. By setting the guide rod 5 and the guide ring 53 to slide, the main extrusion block 55 can be guided and limited. By setting the spring 52, the main extrusion block 55 can follow the cam 56 to move, which facilitates the reset of the main extrusion block 55.

[0027] The side rod 61 can support the cleaning brush 6, the baffle 62 can improve the sealing effect of the dustproof net 3, the lifting rod 71 can cooperate with the top plate 7 to support the temperature sensor 74, and the bolt 73 can be used to limit the installation of the temperature sensor 74.

[0028] In this embodiment, as Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 11 As shown, a connecting post 81 is installed on the baffle 62, and a rack 8 is installed at one end of the connecting post 81. A through pipe 23 that cooperates with the rack 8 is installed on the air pipe 2. The through pipe 23 is provided with a guide groove, and the rack 8 is provided with a guide slider that is adapted to the guide groove, so that the through pipe 23 constrains the linear movement trajectory of the rack 8, that is, the rack 8 can reciprocate along the extension direction of the through pipe 23.

[0029] The support assembly includes a support ring 9 and a second side column 92. The second side column 92 is installed on the air pipe 2, and the support ring 9 is installed at one end of the second side column 92. A rotating column 91 is rotatably installed on the support ring 9. A motor 4 is set up, and the motor 4 drives the cam 56 to rotate, which in turn drives the main extrusion block 55 to move. The main extrusion block 55 drives the auxiliary extrusion block 57 to move, which in turn drives the cleaning brush 6 to move. When the cleaning brush 6 moves, it can drive the baffle 62 to move. When the baffle 62 moves, it can drive the rack 8 to move. When the rack 8 moves, it can drive the gear 83 to rotate. When the gear 83 rotates, it can drive the rotating column 91 to rotate, which in turn drives the fan 93 to rotate. This can provide heat dissipation protection for the circuits in the protected electronic equipment. In addition, in conjunction with the cleaning brush 6, it can clean the dust filter 3 while dissipating heat, thereby improving the heat dissipation effect.

[0030] When the dust filter 3 is clogged, there is no need to stop heat dissipation and disassemble the dust filter 3 for cleaning, which can effectively improve work efficiency. By setting the cam 56 and the spring 52 to cooperate with each other, the cleaning brush 6 can clean the dust filter 3 back and forth, and the fan 93 can rotate to dissipate heat. By setting the connecting column 81, the rack 8 can be supported. By setting the second side column 92 and the support ring 9 to cooperate with each other, the rotating column 91 can be supported. The rotating column 91 is connected to the support ring 9 through the bearing. By setting the through pipe 23, the range of motion of the rack 8 can be increased.

[0031] In this embodiment, as Figures 1-11 As shown, the working process of the temperature protection method and electronic device based on the temperature detection circuit provided in this embodiment is as follows: Step 1: Place the electronic device to be protected in the placement frame 1, align the air pipe 2 with the exhaust port and air inlet on the electronic device to be protected, insert the temperature sensor 74 into the temperature detection interface of the electronic device to be protected, and limit the installation of the temperature sensor 74 with the bolt 73. Step 2: Temperature sensor 74 is connected to the control circuit. When the temperature exceeds the limit, motor 4 is triggered. That is, when temperature sensor 74 senses that the circuit temperature in the electronic device to be protected has risen, motor 4 starts and drives rotating rod 43 to rotate. When rotating rod 43 rotates, it drives cam 56 to rotate. When cam 56 rotates, it squeezes the main extrusion block 55, which in turn drives the main extrusion block 55 to move. The main extrusion block 55 squeezes the auxiliary extrusion block 57, which in turn drives cleaning brush 6 to move. When cleaning brush 6 moves, it cleans dust screen 3. When cleaning brush 6 moves, it drives baffle 62 to move, which in turn drives rack 8 to move. When rack 8 moves, it drives gear 83 to rotate, which in turn drives fan 93 to rotate. One fan 93 delivers outside air to the electronic device to be protected, and the other fan 93 dissipates heat from the electronic device to be protected, thus providing circuit heat dissipation protection for the electronic device to be protected.

[0032] In summary, in this embodiment, the temperature protection method and electronic device based on the temperature detection circuit of this embodiment, by setting the dustproof net 3, facilitates dust protection of the circuit in the electronic device to be protected, and makes it difficult for external dust to enter the electronic device to be protected and cause damage to the circuit.

[0033] When motor 4 starts, it drives the rotating rod 43 to rotate, which in turn drives the cam 56 to rotate. When the cam 56 rotates, it drives the main extrusion block 55 to move, which in turn extrudes the auxiliary extrusion block 57. The auxiliary extrusion block 57 is extruded and rises, which in turn drives the cleaning brush 6 to move. When the cleaning brush 6 moves, it can clean the dustproof net 3, making the dustproof net 3 less likely to be blocked and affect the heat dissipation effect. By setting the placement frame 1, side plate 11 and side frame 12 to cooperate with each other, the electronic equipment to be protected can be supported. By setting the base rod 22 and the support frame... The 21 components work together to support the air pipe 2. The outer frame 41 and the first side column 42 work together to support the motor 4. The rotating rod 43 is rotatably connected to the side plate 11 through the bearing. The guide rod 5 and the guide ring 53 are slidably connected to facilitate the guidance and limiting of the main extrusion block 55. The spring 52 is set to make the main extrusion block 55 move with the cam 56, which facilitates the reset of the main extrusion block 55. The side rod 61 is set to support the cleaning brush 6. The baffle 62 is set to improve the sealing effect of the dustproof net 3.

[0034] By setting the lifting rod 71 to cooperate with the top plate 7, the temperature sensor 74 can be supported. By setting the bolt 73, the temperature sensor 74 can be limited after installation. By setting the motor 4, the cam 56 is rotated when the motor 4 is started, which in turn drives the main extrusion block 55 to move. The main extrusion block 55 drives the auxiliary extrusion block 57 to move, which in turn drives the cleaning brush 6 to move. When the cleaning brush 6 moves, it can drive the baffle 62 to move. When the baffle 62 moves, it can drive the rack 8 to move. When the rack 8 moves, it can drive the gear 83 to rotate. When the gear 83 rotates, it can drive the rotating column 91 to rotate, which in turn drives the fan 93 to rotate, thereby providing heat dissipation protection for the circuits in the protected electronic equipment. In addition, with the cleaning brush 6, the dust screen 3 can be cleaned while dissipating heat, thereby improving the heat dissipation effect.

[0035] When the dust filter 3 is clogged, there is no need to stop heat dissipation and disassemble the dust filter 3 for cleaning, which can effectively improve work efficiency. By setting the cam 56 and the spring 52 to cooperate with each other, the cleaning brush 6 can clean the dust filter 3 back and forth, and the fan 93 can rotate to dissipate heat. By setting the connecting column 81, the rack 8 can be supported. By setting the second side column 92 and the support ring 9 to cooperate with each other, the rotating column 91 can be supported. The rotating column 91 is connected to the support ring 9 through the bearing. By setting the through pipe 23, the range of motion of the rack 8 can be increased.

[0036] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A temperature protection electronic device based on a temperature detection circuit, comprising a support base and an intake / exhaust assembly mounted on the support base, wherein the intake / exhaust assembly has a support assembly installed inside it, characterized in that, A rotating column (91) is installed on the support assembly, a fan (93) is installed on the rotating column (91), a dustproof net (3) is installed on the intake and exhaust assembly, a rotating assembly is installed on the support base, a cam (56) is installed on the rotating assembly, a reset assembly is installed on the support base, a main extrusion block (55) is slidably installed on the reset assembly, a baffle (62) is slidably installed on the dustproof net (3), a cleaning brush (6) is installed on the baffle (62), a bottom column (58) is installed on the cleaning brush (6), an auxiliary extrusion block (57) is installed at one end of the bottom column (58), a rack (8) is installed on the baffle (62), a gear (83) meshing with the rack (8) is installed on the rotating column (91), and a temperature detection assembly is installed on the support base.

2. The temperature protection electronic device based on a temperature detection circuit according to claim 1, characterized in that, The support base includes a placement frame (1), a side plate (11) and a side frame (12). The side frame (12) is installed on the placement frame (1) and the side plate (11) is installed on the side frame (12).

3. The temperature protection electronic device based on a temperature detection circuit according to claim 2, characterized in that, The intake and exhaust assembly includes an air pipe (2), a support frame (21) and a bottom rod (22). The bottom rod (22) is installed on the side frame (12), and the support frame (21) is installed at one end of the bottom rod (22). The air pipe (2) is installed on the support frame (21).

4. The temperature protection electronic device based on a temperature detection circuit according to claim 3, characterized in that, The rotating assembly includes a motor (4), an outer frame (41), a first side column (42), and a rotating rod (43). The first side column (42) is mounted on the side plate (11), and the outer frame (41) is mounted on one end of the first side column (42). The motor (4) is mounted on the outer frame (41), and the rotating rod (43) is mounted on the output end of the motor (4). The cam (56) is mounted on the rotating rod (43).

5. The temperature protection electronic device based on a temperature detection circuit according to claim 4, characterized in that, The reset assembly includes a guide rod (5), a connecting plate (51), a spring (52), a guide ring (53), and a support rod (54). The guide rod (5) is mounted on the side plate (11), the guide ring (53) is slidably mounted on the guide rod (5), and the support rod (54) is mounted on the guide ring (53). One end of the support rod (54) is connected to the main extrusion block (55). The connecting plate (51) is mounted on the guide rod (5), and the connecting plate (51) is connected to the guide ring (53) through the spring (52).

6. The temperature protection electronic device based on a temperature detection circuit according to claim 5, characterized in that, A side rod (61) is installed on the baffle (62), and one end of the side rod (61) is connected to the cleaning brush (6).

7. The temperature protection electronic device based on a temperature detection circuit according to claim 6, characterized in that, The temperature detection assembly includes a top plate (7), a lifting rod (71), a mounting plate (72), bolts (73), and a temperature sensor (74). The mounting plate (72) is installed on the placement frame (1), the lifting rod (71) is installed on the mounting plate (72), the top plate (7) is installed at one end of the lifting rod (71), the temperature sensor (74) is installed on the top plate (7), and the mounting plate (72) is connected to the placement frame (1) by bolts (73).

8. The temperature protection electronic device based on a temperature detection circuit according to claim 7, characterized in that, A connecting post (81) is installed on the baffle (62), and a rack (8) is installed at one end of the connecting post (81). A through pipe (23) that cooperates with the rack (8) is installed on the air pipe (2).

9. The temperature protection electronic device based on a temperature detection circuit according to claim 8, characterized in that, The support assembly includes a support ring (9) and a second side column (92). The second side column (92) is installed on the air tube (2). The support ring (9) is installed at one end of the second side column (92). The rotating column (91) is rotatably installed on the support ring (9).

10. The protection method for temperature protection electronic equipment based on a temperature detection circuit according to claims 1-9, characterized in that, Includes the following steps: Step 1: Place the electronic device to be protected in the placement frame (1), align the air pipe (2) with the exhaust port and air inlet on the electronic device to be protected, insert the temperature sensor (74) into the temperature detection interface of the electronic device to be protected, and limit the temperature sensor (74) after installation by means of bolts (73); Step 2: When the temperature sensor (74) senses that the circuit temperature in the electronic device to be protected has increased, the motor (4) starts and drives the rotating rod (43) to rotate. When the rotating rod (43) rotates, it drives the cam (56) to rotate. When the cam (56) rotates, it squeezes the main extrusion block (55), thereby driving the main extrusion block (55) to move. The main extrusion block (55) squeezes the auxiliary extrusion block (57), thereby driving the cleaning brush (6) to move. When the cleaning brush (6) moves, it cleans the dustproof net (3). When the cleaning brush (6) moves, it drives the baffle (62) to move, thereby driving the rack (8) to move. When the rack (8) moves, it drives the gear (83) to rotate, thereby driving the fan (93) to rotate. One of the fans (93) delivers outside air to the electronic device to be protected, and the other fan (93) exhausts the heat in the electronic device to be protected, thus performing circuit heat dissipation protection for the electronic device to be protected.

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