Ventilation and heat dissipation power switch

Abstract

The invention relates to the technical field of electrical engineering, and discloses a ventilation and heat dissipation power switch which comprises a shell, a cover plate and a wind direction turning assembly, the cover plate is installed at the top of the shell, the wind direction turning assembly comprises sliding rails symmetrically and fixedly connected to the inner wall of the shell, and first sliding frames are symmetrically and slidably connected to the interiors of the sliding rails; the two sides, close to the inner wall of the sliding rail, of the first sliding frame are fixedly connected with gear shafts. When the internal temperature of the shell is too high, the single-side fan turns over in the shell, the original air circulation guiding state in the shell is converted into the state that air in the inner cavity of the shell is exhausted towards the two sides, the fire behavior of the inner cavity of the shell is delayed under the negative pressure and low oxygen conditions, and the problem that the fire behavior is increased due to air circulation and cannot be controlled in time is solved; the inner cavity of the shell is in a closed environment after the baffles are closed, and generated open fire can be extinguished after oxygen in the shell is burnt completely, so that the fire behavior of the shell cannot be continuously increased to threaten the periphery, and the safety of equipment in use is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical engineering, and particularly to a power switch with ventilation and heat dissipation. Background Art

[0002] In modern electrical equipment, as a key component for controlling the on / off of a circuit, the performance and reliability of a power switch are crucial for the normal operation of the equipment. With the continuous increase in the power of electrical equipment and the increasing complexity of usage scenarios, a large amount of heat is generated during the operation of the power switch.

[0003] Currently, many power switches adopt traditional heat dissipation methods, such as simple shell heat dissipation or only setting a small number of heat dissipation holes, and the heat dissipation effect is limited. When the power switch is in a high-load working state for a long time, the internal heat is difficult to dissipate effectively, which will cause the internal temperature of the switch to continue to rise, thereby affecting the performance and lifespan of the internal components of the switch. In severe cases, it may even lead to electrical failures.

[0004] In some extreme cases, such as when an open fire is generated due to overload inside the power switch, the existing ventilation and heat dissipation structure may play a role in assisting combustion for the open fire due to continuous air circulation, resulting in the rapid spread of the fire. This will not only damage the power switch itself but also pose a serious threat to the safety of surrounding equipment and personnel.

[0005] In terms of the wiring of the power switch, the existing wiring method has the problem that the external wiring harness is likely to fall off due to external vibration or accidental pulling, which will affect the normal power supply of the equipment and reduce the stability and reliability of the equipment.

[0006] Therefore, a power switch with ventilation and heat dissipation is proposed. Summary of the Invention

[0007] The purpose of the present invention is to provide a power switch with ventilation and heat dissipation to solve the problems raised in the above background art.

[0008] To achieve the above object, the present invention provides the following technical solution: A power switch for ventilation and heat dissipation, comprising a housing, a cover plate and a wind direction adjustment component. The cover plate is installed on the top of the housing. The wind direction adjustment component includes slide rails symmetrically and fixedly connected to the inner wall of the housing. The inner part of the slide rails is symmetrically and slidably connected with first sliding frames. On both sides of the first sliding frames close to the inner wall of the slide rails, tooth shafts are fixedly connected. The bottom of the inner wall of the slide rails is fixedly connected with convex teeth in a linear array distribution. The convex teeth are engaged with the tooth shafts. The middle part of the first sliding frames is rotatably connected with L-shaped tooth plates. On the side walls of the L-shaped tooth plates, first magnetic plates are symmetrically and fixedly connected. On the opposite sides of the first sliding frames, fans are fixedly connected. On the outer walls of the fans, second magnetic plates adapted to the first magnetic plates are fixedly connected. A tooth rod is installed and driven inside the cover plate. The bottom of the cover plate is symmetrically and slidably connected with gears. The side walls of the gears are engaged with the tooth rod. The bottoms of the gears are engaged with the tops of the L-shaped tooth plates. At the top of the tooth rod and above the cover plate, a turntable is fixedly connected.

[0009] Preferably, ventilation mesh holes are opened on both sides of the housing. A closing component is arranged inside the housing. The closing component includes baffles symmetrically and slidably connected to the inner wall of the housing. Link rods are rotatably connected to the outer walls of the baffles. The ends of the link rods far away from the baffles are slidably connected to the inside of the slide rails. On the sides of the baffles close to each other, first tooth plates are fixedly connected. Transmission toothed disks are vertically and symmetrically rotatably connected to the side walls of the housing. The transmission toothed disks are engaged with the first tooth plates. A transmission belt is connected between the two transmission toothed disks in a transmission manner.

[0010] Preferably, a circuit board is installed inside the housing. Heat dissipation fins are installed on the top of the circuit board. The two fans slide symmetrically in the inner cavity of the housing with the heat dissipation fins as the center. When the fans are close to the heat dissipation fins, the blowing directions of the two fans are the same. When the fans are far away from the heat dissipation fins, the two fans blow towards the ventilation mesh holes close to the side walls of the housing.

[0011] Preferably, a quick installation component is arranged on the circuit board. The quick installation component includes a wiring board fixedly connected to the outer wall of the circuit board. First sliding rods are symmetrically and fixedly connected to the top of the wiring board. Second sliding frames are slidably connected to the outer walls of the first sliding rods. First springs are fixedly connected between the second sliding frames and the wiring board. Plug-in boards are fixedly connected to the bottom of the second sliding frames in a linear array distribution. A bimetallic strip is installed inside the wiring board. A second sliding rod is slidably connected through the inside of the wiring board above the bimetallic strip. A clamping plate is fixedly connected to the bottom of the second sliding rod. The clamping plate is clamped inside the wiring board. The second sliding rod is slidably connected to the inside of the second sliding frame.

[0012] Preferably, clamping plates are uniformly and fixedly connected inside the wiring board. A pressing plate is slidably connected to the top of the wiring board. Triangular blocks adapted to the clamping plates are fixedly connected to the bottom of the pressing plate in a linear array distribution. A conductive sheet is arranged on one side of the second carriage close to the circuit board. A conductive groove is arranged on the inner wall of the wiring board. The conductive groove is electrically connected to the circuit board. A temperature sensor is arranged inside the wiring board.

[0013] Preferably, the side wall of the clamping plate is beveled. The bimetallic sheet is distributed with copper on the top and iron on the bottom. The inner cavity of the plug board is conical. The clamping plate is in a folded line shape.

[0014] Preferably, an external battery is installed on the outer wall of the housing. A controller is arranged inside the housing. The housing is electrically connected to the rack through the controller.

[0015] Preferably, when the baffle moves relatively closer, it will block the ventilation mesh holes on the side wall of the housing. A closed space is formed inside the housing cavity after the ventilation mesh holes are blocked.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. When the temperature inside the housing is too high, the unilateral fan flips inside the housing, changing the original state of guiding air circulation inside the housing to exhausting the air inside the housing cavity to both sides. This delays the fire inside the housing cavity under negative pressure and low oxygen, avoiding the problem that the air circulation causes the fire to increase and cannot be controlled in time. After the baffle closes, the inside of the housing cavity is in a closed environment, enabling the generated open fire to go out after burning up all the oxygen inside the housing, so that the fire of the housing will not continue to increase and pose a threat to the surrounding area, improving the safety during equipment use;

[0018] 2. When the external wiring harness is pulled out of the inside of the wiring board in the reverse direction, the end of the clamping plate will embed into the surface of the external wiring harness, so that the external wiring harness cannot fall off, avoiding the problem that the external wiring harness falls off due to external vibration or accidental pulling during use. The bimetallic sheet will be heated and bend upward. After the bimetallic sheet bends upward, it will hold against the clamping plate and make the second slide rod slide upward inside the second carriage, so that the external wiring harness no longer supplies power to the circuit board, thereby preventing the further increase of the temperature of the circuit board and improving the safety during equipment use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is an internal schematic diagram of the overall structure of the present invention;

[0021] Figure 3 It is a partial schematic diagram of the structure of the closing component of the present invention;

[0022] Figure 4 For the present invention Figure 3 Schematic diagram of enlarged structure at position A in the present invention;

[0023] Figure 5 Partial schematic diagram of the gear structure of the present invention;

[0024] Figure 6 Partial schematic diagram of the circuit board structure of the present invention;

[0025] Figure 7 Partial schematic diagram of the structure of the quick installation component of the present invention;

[0026] Figure 8 Partial sectional schematic diagram of the structure of the quick installation component of the present invention;

[0027] Figure 9 Exploded schematic diagram of the structure of the quick installation component of the present invention.

[0028] In the figure:

[0029] 1. Outer shell; 2. Cover plate; 3. Circuit board; 4. Wind direction reversing component; 5. Sealing component; 6. Quick installation component; 7. Heat dissipation fins; 8. External battery;

[0030] 41. Slide rail; 42. First carriage; 43. Tooth shaft; 44. Convex tooth; 45. L-shaped tooth plate; 46. First magnetic plate; 47. Second magnetic plate; 48. Gear; 49. Tooth rod; 410. Turntable; 411. Fan;

[0031] 51. Baffle; 52. Connecting rod; 53. First tooth plate; 54. Driving gear disc; 55. Transmission belt;

[0032] 61. Wiring board; 62. First slide bar; 63. Second carriage; 64. First spring; 65. Plugboard; 66. Bimetallic strip; 67. Second slide bar; 68. Clamping plate; 69. Pressing plate; 610. Clamping plate; 611. Conductive sheet. Specific embodiments

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0034] Embodiments of the present invention

[0035] Please refer to Figures 1 to 9, A power switch with ventilation and heat dissipation, comprising a housing 1, a cover plate 2 and a wind direction adjustment component 4. The cover plate 2 is installed on the top of the housing 1. The wind direction adjustment component 4 includes slide rails 41 symmetrically and fixedly connected to the inner wall of the housing 1. Inside the slide rails 41, first sliding frames 42 are symmetrically and slidably connected. On both sides of the first sliding frame 42 close to the inner wall of the slide rail 41, tooth shafts 43 are fixedly connected. At the bottom of the inner wall of the slide rail 41, convex teeth 44 are fixedly connected in a linear array. The convex teeth 44 are engaged with the tooth shafts 43. In the middle of the first sliding frame 42, an L-shaped tooth plate 45 is rotatably connected. On the side wall of the L-shaped tooth plate 45, first magnetic plates 46 are symmetrically fixedly connected. On the opposite sides of the first sliding frame 42, fans 411 are fixedly connected. On the outer wall of the fan 411, second magnetic plates 47 adapted to the first magnetic plates 46 are fixedly connected. Inside the cover plate 2, a tooth bar 49 is installed and driven. At the bottom of the cover plate 2, gears 48 are symmetrically slidably connected. The side wall of the gear 48 is engaged with the tooth bar 49. The bottom of the gear 48 is engaged with the top of the L-shaped tooth plate 45. At the top of the tooth bar 49 and above the cover plate 2, a turntable 410 is fixedly connected.

[0036] Inside the housing 1, a circuit board 3 is installed. On the top of the circuit board 3, heat dissipation fins 7 are installed. The two fans 411 slide symmetrically in the inner cavity of the housing 1 with the heat dissipation fins 7 as the center. When the fans 411 are close to the heat dissipation fins 7, the blowing directions of the two fans 411 are the same. When the fans 411 are far from the heat dissipation fins 7, the two fans 411 blow towards the ventilation mesh holes close to the side wall of the housing 1.

[0037] On the outer wall of the housing 1, an external battery 8 is installed. Inside the housing 1, a controller is provided. The housing 1 is electrically connected to the tooth bar 49 through the controller.

[0038] In actual operation of this embodiment, in the normal use state, when the circuit board 3 works, the heat generated will transfer to the heat dissipation fins 7. The two fans 411 in the inner cavity of the housing 1 rotate. The ventilation holes on one side of the housing 1 will inhale external air into the housing 1 under the influence of the rotation of the fans 411, and the ventilation holes on the other side of the housing 1 will discharge the air in the inner cavity of the housing 1 to the outside of the housing 1 under the influence of the rotation of the fans 411, so that the external air of the housing 1 continuously circulates inside the housing 1. During the circulation of the air in the inner cavity of the housing 1, the heat dissipation fins 7 will be blown. The heat transferred from the circuit board 3 to the heat dissipation fins 7 is discharged to the outside of the housing 1 through the circulating air, so as to achieve the cooling effect of the inner cavity of the housing 1.

[0039] When the inside of the housing 1 overheats, the temperature sensor inside the wiring board 61 will, through the controller, energize the external battery 8 and the rack 49 and cause the rack 49 to start rotating. After the rack 49 rotates, it meshes and drives the gear 48 to slide in the opposite direction. The movement of the rack 49 drives the L-shaped toothed plate 45 engaged at the bottom to move together. At this time, since the bottom of the L-shaped toothed plate 45 is rotatably connected to the middle of the first carriage 42, and the first carriage 42 is slidably connected to the inside of the slide rail 41, the fan 411 will move together with the L-shaped toothed plate 45 when the L-shaped toothed plate 45 moves. When the tooth shafts 43 on both sides of the first carriage 42 slide to the convex teeth 44 inside the slide rail 41, the first carriage 42 meshes with the convex teeth 44 and rotates. The rotation of the tooth shafts 43 drives the first carriage 42 and the fan 411 to rotate together. At this time, the adsorption state between the first magnetic plate 46 and the second magnetic plate 47 is released. After the fan 411 rotates 180 degrees, its blowing direction changes from blowing into the inner cavity of the housing 1 to blowing towards the ventilation mesh holes of the housing 1. By blowing towards the ventilation mesh holes of the housing 1 simultaneously through the two fans 411 on both sides, a negative pressure is generated in the inner cavity of the housing 1 while the oxygen content decreases, preventing the flowing air from having an effect of assisting combustion when an open flame is generated due to overload inside the housing 1.

[0040] Ventilation mesh holes are provided on both sides of the housing 1. A closing assembly 5 is arranged inside the housing 1. The closing assembly 5 includes baffles 51 symmetrically and slidably connected to the inner wall of the housing 1. Connecting rods 52 are rotatably connected to the outer walls of the baffles 51. The ends of the connecting rods 52 far from the baffles 51 are slidably connected to the inside of the slide rail 41. First toothed plates 53 are fixedly connected to the sides of the baffles 51 close to each other. Transmission toothed discs 54 are vertically and symmetrically rotatably connected to the side walls of the housing 1. The transmission toothed discs 54 are all meshed with the first toothed plates 53. A transmission belt 55 is connected between the two transmission toothed discs 54.

[0041] When the baffles 51 slide relatively closer, they will block the ventilation mesh holes on the side walls of the housing 1, and a closed space is formed inside the inner cavity of the housing 1 after the ventilation mesh holes are blocked.

[0042] In actual operation of this embodiment, when the temperature inside the outer shell 1 is too high, during the relative sliding of the fan 411 inside the outer shell 1, the sliding of the fan 411 will push the connecting rod 52 to slide inside the slide rail 41. At this time, since the baffle 51 is slidably connected to the inner wall of the outer shell 1, and one side of the connecting rod 52 away from the slide rail 41 is rotatably connected to the outer wall of the baffle 51, the baffle 51 squeezed by the connecting rod 52 will slide towards the side close to the ventilation mesh holes of the outer shell 1. The sliding of the baffle 51 drives the first toothed plate 53 to slide together. After the first toothed plate 53 moves, it drives the driving toothed disc 54 engaged with it to rotate together. The upper and lower driving toothed discs 54 rotate synchronously through the transmission of the transmission belt 55. The two baffles 51 on both sides move relatively closer under the synchronous rotation drive of the upper and lower driving toothed discs 54. Finally, the two baffles 51 close and block the ventilation mesh holes on the outer shell 1. After the baffle 51 blocks the ventilation mesh holes on the outer shell 1, a closed space is formed inside the outer shell 1, cutting off the oxygen required for open fire combustion.

[0043] When the temperature inside the outer shell 1 is too high, the flipping of the single-side fan 411 inside the outer shell 1 changes the original state of guiding air circulation inside the outer shell 1 to exhausting the air inside the inner cavity of the outer shell 1 to both sides, delaying the fire inside the inner cavity of the outer shell 1 under negative pressure and low oxygen, and avoiding the problem that the air circulation causes the fire to increase and cannot be controlled in time. After the baffle 51 closes, the inner cavity of the outer shell 1 is in a closed environment, which can make the generated open fire go out after burning up all the oxygen inside the outer shell 1, so that the fire of the outer shell 1 will not continue to increase and pose a threat to the surrounding area, improving the safety during equipment use.

[0044] A quick installation component 6 is arranged on the circuit board 3. The quick installation component 6 includes a wiring board 61 fixedly connected to the outer wall of the circuit board 3. The top of the wiring board 61 is symmetrically and fixedly connected with first sliding rods 62. The outer wall of the first sliding rods 62 is slidably connected with a second sliding frame 63. First springs 64 are fixedly connected between the second sliding frame 63 and the wiring board 61. The bottom of the second sliding frame 63 is fixedly connected with plug-in boards 65 in a linear array distribution. A bimetallic strip 66 is installed inside the wiring board 61. A second sliding rod 67 is slidably connected through the inside of the wiring board 61 above the bimetallic strip 66. A clamping plate 68 is fixedly connected to the bottom of the second sliding rod 67. The clamping plate 68 is clamped inside the wiring board 61. The second sliding rod 67 is slidably connected inside the second sliding frame 63.

[0045] Clamping plates 610 are uniformly fixedly connected inside the wiring board 61. A pressing plate 69 is slidably connected to the top of the wiring board 61. Triangular blocks adapted to the clamping plates 610 are fixedly connected to the bottom of the pressing plate 69 in a linear array distribution. A conductive sheet 611 is arranged on one side of the second sliding frame 63 close to the circuit board 3. A conductive groove is arranged on the inner wall of the wiring board 61. The conductive groove is electrically connected to the circuit board 3. A temperature sensor is arranged inside the wiring board 61.

[0046] The side wall of the clamping plate 68 is an inclined surface, the bimetallic strip 66 is copper on the top and iron on the bottom, the inner cavity of the plug board 65 is conical, and the clamping plate 610 is in a broken line shape.

[0047] During actual use of this embodiment, the staff will insert the external wiring harness into the inside of the power strip 65, and the conductive sheet 611 on the wiring strip 61 will be electrically connected to the circuit board 3 through the conductive groove on the circuit board 3. After the external wiring harness is powered, the current will supply power to the circuit board 3 through the contact between the conductive sheet 611 and the conductive groove of the circuit board 3. When the external wiring harness is inserted, the side wall of the external wiring harness will squeeze the clamping plate 610 and be affected by the folded line shape of the conductive sheet 611. When the external wiring harness is pulled out of the wiring strip 61 in reverse, the end of the clamping plate 610 will be embedded in the surface of the external wiring harness, so that the external wiring harness cannot fall off, thereby avoiding the problem of the external wiring harness falling off due to external vibration or unintentional pulling during use.

[0048] When the external wiring harness needs to be separated from the terminal board 61, the staff pushes the pressure plate 69 into the terminal board 61. During the sliding process of the pressure plate 69 into the terminal board 61, the triangular column at the bottom of the pressure plate 69 will squeeze the clamping plate 610, thereby increasing the distance between the relative clamping plates 610. After the distance between the clamping plates 610 increases, the ends of the clamping plates 610 are no longer embedded in the surface of the external wiring harness, so that multiple external wiring harnesses can be taken out together.

[0049] When the temperature in the inner cavity of the shell 1 is too high and an open flame is generated, the bimetallic strip 66 will be heated and bend upward. After the bimetallic strip 66 bends upward, it will support the card plate 68 to make the second slide bar 67 slide upward inside the second slide 63. When the side wall of the card plate 68 contacts the inner wall of the terminal board 61, the inclined surface of the card plate 68 and the elastic contraction force of the first spring 64 will make the card plate 68 immediately fit the inner wall of the terminal board 61 and slide out of the inside of the terminal board 61. After the second slide bar 67 slides out of the inside of the terminal board 61, the second slide 63 is no longer limited. The elastic contraction of the first spring 64 drives the second slide 63 to slide on the outer wall of the first slide bar 62. After the second slide 63 slides, the conductive sheet 611 is separated from the conductive groove of the circuit board 3, so that the external wiring harness no longer supplies power to the circuit board 3, thereby preventing the temperature of the circuit board 3 from further increasing, thereby improving the safety of the equipment when in use.

[0050] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

[0051] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A power switch for ventilation and heat dissipation, comprising a housing (1), a cover plate (2) and a wind direction reversing component (4), characterized in that: The cover plate (2) is installed on the top of the housing (1). The wind direction reversing assembly (4) includes slide rails (41) symmetrically and fixedly connected to the inner wall of the housing (1). The inside of the slide rails (41) is symmetrically and slidably connected with first sliding frames (42). Both sides of the first sliding frames (42) close to the inner wall of the slide rails (41) are fixedly connected with tooth shafts (43). The bottom of the inner wall of the slide rails (41) is fixedly connected with convex teeth (44) distributed in a linear array. The convex teeth (44) are engaged with the tooth shafts (43). The middle of the first sliding frames (42) is rotatably connected with L-shaped tooth plates (45). Both sides of the side wall of the L-shaped tooth plates (45) are symmetrically fixedly connected with first magnetic plates (46). Fans (411) are fixedly connected to the opposite sides of the first sliding frames (42). Second magnetic plates (47) adapted to the first magnetic plates (46) are fixedly connected to the outer walls of the fans (411). A toothed rod (49) is driven and installed inside the cover plate (2). Gears (48) are symmetrically and slidably connected to the bottom of the cover plate (2). The side walls of the gears (48) are engaged with the toothed rod (49). The bottoms of the gears (48) are engaged with the tops of the L-shaped tooth plates (45). A turntable (410) is fixedly connected to the top of the toothed rod (49) and located above the cover plate (2).

2. The power switch for ventilation and heat dissipation according to claim 1, wherein: Ventilation mesh holes are formed on both sides of the housing (1). A sealing assembly (5) is arranged inside the housing (1). The sealing assembly (5) includes baffles (51) symmetrically and slidably connected to the inner wall of the housing (1). Connecting rods (52) are rotatably connected to the outer walls of the baffles (51). The ends of the connecting rods (52) far from the baffles (51) are slidably connected to the inside of the slide rails (41). First tooth plates (53) are fixedly connected to the sides of the baffles (51) close to each other. Transmission gear discs (54) are vertically and symmetrically rotatably connected to the side walls of the housing (1). The transmission gear discs (54) are engaged with the first tooth plates (53). A transmission belt (55) is connected between the two transmission gear discs (54).

3. The power switch for ventilation and heat dissipation according to claim 1, wherein: A circuit board (3) is installed inside the housing (1). Heat dissipation fins (7) are installed on the top of the circuit board (3). The two fans (411) slide symmetrically in the inner cavity of the housing (1) with the heat dissipation fins (7) as the center. When the fans (411) are close to the heat dissipation fins (7), the blowing directions of the two fans (411) are the same. When the fans (411) are far from the heat dissipation fins (7), the two fans (411) blow towards the ventilation mesh holes on the side walls of the housing (1).

4. The power switch for ventilation and heat dissipation according to claim 3, characterized in that: A quick installation component (6) is provided on the circuit board (3). The quick installation component (6) includes a wiring board (61) fixedly connected to the outer wall of the circuit board (3). Symmetrically fixed to the top of the wiring board (61) are first sliding rods (62). Slidingly connected to the outer walls of the first sliding rods (62) are second sliding frames (63). Fixedly connected between the second sliding frames (63) and the wiring board (61) are first springs (64). Fixedly connected to the bottom of the second sliding frames (63) in a linear array are patch panels (65). Installed inside the wiring board (61) is a bimetallic strip (66). Penetrating and slidingly connected inside the wiring board (61) and above the bimetallic strip (66) is a second sliding rod (67). Fixedly connected to the bottom of the second sliding rod (67) is a clamping plate (68). The clamping plate (68) is snap-fitted inside the wiring board (61). The second sliding rod (67) is slidingly connected inside the second sliding frame (63).

5. The power switch for ventilation and heat dissipation according to claim 4, characterized in that: Evenly fixedly connected inside the wiring board (61) are clamping plates (610). Slidingly connected to the top of the wiring board (61) is a pressing plate (69). Fixedly connected to the bottom of the pressing plate (69) in a linear array are triangular blocks adapted to the clamping plates (610). On one side of the second sliding frame (63) close to the circuit board (3) is provided a conductive sheet (611). Inside the inner wall of the wiring board (61) is provided a conductive groove, which is electrically connected to the circuit board (3). Inside the wiring board (61) is provided a temperature sensor.

6. The power switch for ventilation and heat dissipation according to claim 5, wherein: The side wall of the clamping plate (68) is beveled. The bimetallic strip (66) is distributed with copper on the top and iron on the bottom. The inner cavity of the patch panel (65) is conical. The clamping plate (610) is zigzag-shaped.

7. A power switch for ventilation and heat dissipation according to claim 1, characterized in that: An external battery (8) is installed on the outer wall of the housing (1). A controller is provided inside the housing (1). The housing (1) is electrically connected to the rack bar (49) through the controller.

8. The power switch for ventilation and heat dissipation according to claim 2, wherein: When the baffles (51) slide relatively closer, they will block the ventilation mesh holes on the side wall of the housing (1). A closed space is formed inside the inner cavity of the housing (1) after the ventilation mesh holes are blocked.

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