Moisture-proof and dehumidification type PCB (Printed Circuit Board)

Abstract

The invention discloses a damp-proof dehumidification type PCB, and belongs to the technical field of PCBs, the damp-proof dehumidification type PCB comprises a PCB body, the PCB body is installed in a damp-proof box, the upper end of the damp-proof box is connected with a cover plate through bolts, heat dissipation assemblies are arranged at the two ends of the damp-proof box, the PCB body and the damp-proof box are connected through a damping assembly, and drying assemblies are arranged at the two ends in the damp-proof box; by arranging the drying assembly, a drying agent bag is placed in a drying box, then a top plate is placed on the drying box, and meanwhile, a first magnetic strip at the lower end of the top plate is attracted to a second magnetic strip on the drying box, so that the effect that the top plate and the drying box are attracted and fixed is achieved; the drying agent bag in the drying box can absorb moisture in the damp-proof box through the through hole, the damp-proof and dehumidification effect on the interior of the damp-proof box is achieved, the interior of the damp-proof box can be dried by arranging the drying assembly, and damage to the PCB body caused by heavy moisture in the damp-proof box is avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of PCB boards, and particularly relates to a moisture-proof and dehumidifying PCB board. Background Art

[0002] The names of circuit boards include: ceramic circuit boards, alumina ceramic circuit boards, aluminum nitride ceramic circuit boards, circuit boards, PCB boards, aluminum substrates, high-frequency boards, thick copper boards, impedance boards, PCBs, ultra-thin circuit boards, ultra-thin circuit boards, printed (copper etching technology) circuit boards, etc.

[0003] The existing technologies have the following problems: 1. After the existing PCB board is installed in a moisture-proof box, the moisture-proof and dehumidifying effect is poor, and the moisture in the moisture-proof box cannot be removed, thus ensuring a dry working environment for the PCB board; 2. When the existing PCB board is in use, the PCB board cannot be buffered and shock-absorbed, and the PCB board is easily damaged due to large vibrations; 3. When the existing PCB board is working, the PCB board cannot be cooled, and the heat generated when the PCB board works in the moisture-proof box cannot be discharged from the moisture-proof box. The PCB board used in a high-temperature environment for a long time affects the service life of the PCB board. Summary of the Invention

[0004] In order to solve the problems raised in the above background art, the present invention provides a moisture-proof and dehumidifying PCB board, which has the characteristics of good moisture-proof and dehumidifying effect, can buffer and shock-absorb the PCB board, and can simultaneously cool the PCB board.

[0005] To achieve the above object, the present invention provides the following technical solution: A moisture-proof and dehumidifying PCB board, including a PCB board body, the PCB board body is installed in a moisture-proof box, the upper end of the moisture-proof box is connected with a cover plate by bolts, heat dissipation components are arranged at both ends of the moisture-proof box, the PCB board body and the moisture-proof box are connected by a shock-absorbing component, and drying components are arranged at both ends inside the moisture-proof box; The drying component includes a drying box, a desiccant packet, through holes, a top plate, magnetic strip one and magnetic strip two. Among them, drying boxes are fixed on both sides inside the PCB board body, several through holes are opened at one end of the drying box, a desiccant packet is arranged inside the drying box, a top plate is arranged at the upper end of the drying box, magnetic strip one is clamped at both sides of the lower end of the top plate, and magnetic strip two is clamped at positions corresponding to magnetic strip one on both sides of the upper end of the drying box.

[0006] Further, the drying component further includes positioning rods and positioning holes. Among them, positioning rods are fixed on both sides of the lower end of the top plate, and positioning holes corresponding to the positioning rods are opened on both sides of the upper end of the drying box.

[0007] Further, the lower end of the first magnetic strip is flush with the lower end of the top plate, and the upper end of the second magnetic strip is flush with the upper end of the drying box. A handle is fixed at the middle position of the upper end of the top plate.

[0008] Further, the lower end of the positioning rod is arranged in an arc structure. After the positioning rod enters the positioning hole, the side of the positioning rod is in close contact with the inner wall of the positioning hole. The drying box and the moisture-proof box are welded by spot welding.

[0009] Further, the damping component includes a strip-shaped seat, a folding plate, mounting bolts, mounting holes, a sliding plate, a sliding groove, a damping rod and a spring. Among them, folding plates are arranged at the positions corresponding to the two ends of the PCB board body on both sides inside the moisture-proof box. The PCB board body and the folding plates are connected by mounting bolts. Mounting holes corresponding to the mounting bolts are arranged in the folding plates. Sliding plates are fixed on both sides at one end of the folding plates. Strip-shaped seats are fixed at the positions corresponding to the sliding plates on both sides of the lower end inside the moisture-proof box. A sliding groove corresponding to the sliding plate is formed at one end of the strip-shaped seat. A damping rod is arranged at the lower end of the sliding plate, and a spring is sleeved outside the damping rod at the lower end of the sliding plate.

[0010] Further, the side of the sliding plate is in close contact with the inner wall of the sliding groove. After the PCB board body is installed on the folding plates, the side edges of both ends of the PCB board body are in close contact with the side edges of the folding plates. Both ends of the damping rod are welded and fixed on the sliding plate and the strip-shaped seat.

[0011] Further, the heat dissipation component includes a fixed tube, a fan, a fixed frame, a dust removal net and a drying net. Among them, fixed tubes are fixed at both ends of the PCB board body. A fixed frame is fixed on one side inside the fixed tube. A fan is installed on the fixed frame. A dust removal net is installed on the side far from the fan inside the fixed tube. A drying net is fixed at one end of the dust removal net.

[0012] Further, the heat dissipation component further includes a clamping block, a fixing bolt, a clamping groove and a fixing hole. Among them, clamping blocks are fixed at both ends of the drying net and the dust removal net. A clamping groove corresponding to the clamping block is formed at one end of the fixed tube. The clamping block and the fixed tube are connected by a fixing bolt, and a fixing hole corresponding to the fixing bolt is formed in the clamping groove.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By setting the drying component of the present invention, the desiccant packet is placed in the drying box, and then the top plate is placed on the drying box. At the same time, the first magnetic strip at the lower end of the top plate is adsorbed to the second magnetic strip on the drying box, achieving the effect of adsorption and fixation between the top plate and the drying box. The desiccant packet in the drying box can absorb the moisture in the moisture-proof box through the through holes, achieving the effect of moisture-proof and dehumidification inside the moisture-proof box. By setting the drying component, the inside of the moisture-proof box can be dried, avoiding damage to the PCB board body caused by heavy moisture inside the moisture-proof box.

[0014] 2. The present invention is provided with a shock-absorbing component. The PCB board body is placed on the folding plate of the moisture-proof box, and the mounting bolts are passed through the PCB board body and screwed into the mounting holes of the folding plate, achieving the effect of connecting and fixing between the PCB board body and the folding plate. When the PCB board body is vibrated, the sliding plates at both ends of the folding plate slide in the sliding grooves of the strip-shaped seat, and the sliding plates slide to compress the damping rods and springs. The damping rods and springs can buffer and shock-absorb the PCB board body. By setting the shock-absorbing component, the PCB board body can be buffered and shock-absorbed, avoiding damage to the PCB board body caused by vibration.

[0015] 3. The present invention is provided with a heat-dissipating component. When the PCB board body works in the moisture-proof box, heat is generated. The fans in the two fixed pipes are turned on. The fan in one side fixed pipe blows air into the moisture-proof box, and the fan in the other side fixed pipe discharges the heat in the moisture-proof box out of the moisture-proof box, thereby forming an air flow in the moisture-proof box. At the same time, the dust removal net and the drying net in the fixed pipe play a role in blocking impurities and moisture, preventing dust and moisture from entering the moisture-proof box. By setting the heat-dissipating component, the PCB board body can be cooled by heat dissipation, avoiding the influence of the long-term use of the PCB board body in a high-temperature environment on the service life of the PCB board body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a perspective sectional view of the moisture-proof box of the present invention; Figure 2 is a perspective view of the present invention; Figure 3 is a perspective view when the top plate of the present invention is installed; Figure 4 is a bottom perspective view of the top plate of the present invention; Figure 5 is a perspective view when the PCB board of the present invention is installed; Figure 6 is a sectional perspective view of the fixed pipe when the dust removal net and the drying net of the present invention are installed; In the figure: 1. PCB board body; 2. Drying component; 21. Drying box; 22. Desiccant package; 23. Through hole; 24. Top plate; 25. Magnetic strip 1; 26. Magnetic strip 2; 27. Positioning rod; 28. Positioning hole; 3. Shock-absorbing component; 31. Strip-shaped seat; 32. Folding plate; 33. Mounting bolt; 34. Mounting hole; 35. Sliding plate; 36. Sliding groove; 37. Damping rod; 38. Spring; 4. Heat-dissipating component; 41. Fixed pipe; 42. Fan; 43. Fixed bracket; 44. Dust removal net; 45. Drying net; 46. Clamping block; 47. Fixed bolt; 48. Card slot; 49. Fixed hole; 5. Moisture-proof box; 6. Cover plate. DETAILED DESCRIPTION OF THE INVENTION

[0017] 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention. Embodiment

[0018] Please refer to Figure 1-6 , the present invention provides the following technical solutions: a moisture-proof and dehumidifying PCB board, including a PCB board body 1, the PCB board body 1 is installed in a moisture-proof box 5, the upper end of the moisture-proof box 5 is connected with a cover plate 6 by bolts, heat dissipation components 4 are arranged at both ends of the moisture-proof box 5, the PCB board body 1 and the moisture-proof box 5 are connected by a shock-absorbing component 3, and drying components 2 are arranged at both ends inside the moisture-proof box 5; The drying component 2 includes a drying box 21, a desiccant packet 22, through holes 23, a top plate 24, a magnetic strip one 25 and a magnetic strip two 26. Among them, drying boxes 21 are fixed on both sides inside the PCB board body 1, a plurality of through holes 23 are opened at one end of the drying box 21, a desiccant packet 22 is arranged inside the drying box 21, a top plate 24 is arranged at the upper end of the drying box 21, magnetic strip ones 25 are clamped at both sides of the lower end of the top plate 24, and magnetic strip twos 26 are clamped at positions corresponding to the magnetic strip ones 25 at both sides of the upper end of the drying box 21.

[0019] In the present invention, further, the drying component 2 further includes a positioning rod 27 and a positioning hole 28. Among them, positioning rods 27 are fixed at both sides of the lower end of the top plate 24, and positioning holes 28 corresponding to the positioning rods 27 are opened at both sides of the upper end of the drying box 21.

[0020] By adopting the above technical solution, when the top plate 24 is installed, the positioning rods 27 at both sides of the lower end of the top plate 24 enter the positioning holes 28 at the upper end of the drying box 21. By arranging the positioning rods 27 and the positioning holes 28, a limiting effect can be achieved on the installation of the top plate 24, so that the top plate 24 is more stable after installation.

[0021] In the present invention, further, the lower end of the magnetic strip one 25 and the lower end of the top plate 24 are flush with each other, and the upper end of the magnetic strip two 26 and the upper end of the drying box 21 are flush with each other. A handle is fixed at the middle position of the upper end of the top plate 24.

[0022] By adopting the above technical solution, after the top plate 24 is installed on the drying box 21, the top plate 24 and the drying box 21 are more closely attached to each other. Arranging a handle at the upper end of the top plate 24 facilitates the taking of the top plate 24.

[0023] In the present invention, further, the lower end of the positioning rod 27 is set to an arc-shaped structure. After the positioning rod 27 enters the positioning hole 28, the side of the positioning rod 27 is in close contact with the inner wall of the positioning hole 28. The drying box 21 and the moisture-proof box 5 are welded by spot welding.

[0024] By adopting the above technical solution, the lower end of the positioning rod 27 is set as an arc structure to facilitate insertion into the positioning hole 28. After the positioning rod 27 enters the positioning hole 28, the side of the positioning rod 27 is in close contact with the inner wall of the positioning hole 28, and the positioning rod 27 is not likely to shake in the positioning hole 28. Spot welding makes the drying box 21 not shake in the moisture-proof box 5.

[0025] When this embodiment is in use, when the moisture-proof and dehumidifying type PCB board is in use, the device is installed at a suitable position. By setting the drying component 2, the desiccant packet 22 is placed in the drying box 21, and then the top plate 24 is placed on the drying box 21. At the same time, the first magnetic strip 25 at the lower end of the top plate 24 is adsorbed to the second magnetic strip 26 on the drying box 21, achieving the effect of adsorbing and fixing between the top plate 24 and the drying box 21. The desiccant packet 22 in the drying box 21 can absorb the moisture in the drying box 21 through the through hole 23, achieving the effect of moisture-proof and dehumidifying inside the drying box 21. By setting the drying component 2, the inside of the drying box 21 can be dried, avoiding damage to the PCB board body 1 caused by heavy moisture inside the drying box 21. When the top plate 24 is installed, the positioning rods 27 on both sides at the lower end of the top plate 24 enter the positioning holes 28 at the upper end of the drying box 21. By setting the positioning rods 27 and the positioning holes 28, a limiting effect can be achieved on the installation of the top plate 24, making the top plate 24 more stable after installation; Embodiment

[0026] The difference between this embodiment and Embodiment 1 is that: the shock-absorbing component 3 includes a strip-shaped seat 31, a folding plate 32, a mounting bolt 33, a mounting hole 34, a sliding plate 35, a sliding groove 36, a damping rod 37, and a spring 38. Among them, folding plates 32 are provided at positions corresponding to both ends of the PCB board body 1 on both sides inside the moisture-proof box 5. The PCB board body 1 and the folding plates 32 are connected by mounting bolts 33. Mounting holes 34 corresponding to the mounting bolts 33 are provided in the folding plates 32. Sliding plates 35 are fixed on both sides at one end of the folding plates 32. Strip-shaped seats 31 are fixed at positions corresponding to the sliding plates 35 on both sides at the lower end inside the moisture-proof box 5. A sliding groove 36 corresponding to the sliding plate 35 is provided at one end of the strip-shaped seat 31. A damping rod 37 is provided at the lower end of the sliding plate 35, and a spring 38 is sleeved outside the damping rod 37 at the lower end of the sliding plate 35.

[0027] By adopting the above technical solution, the PCB board body 1 is placed on the folding plate 32 of the moisture-proof box 5, and the mounting bolt 33 is passed through the PCB board body 1 and screwed into the mounting hole 34 of the folding plate 32, so as to achieve the effect of connecting and fixing between the PCB board body 1 and the folding plate 32. When the PCB board body 1 is vibrated, the sliding plates 35 at both ends of the folding plate 32 slide in the sliding grooves 36 of the strip-shaped seat 31. The sliding plates 35 slide to compress the damping rods 37 and the springs 38. The damping rods 37 and the springs 38 can be used to buffer and shock-absorb the PCB board body 1. By setting the shock-absorbing component 3, the PCB board body 1 can be buffered and shock-absorbed, avoiding damage to the PCB board body 1 caused by vibration.

[0028] In the present invention, further, the side of the sliding plate 35 is closely attached to the inner wall of the sliding groove 36. After the PCB board body 1 is installed on the folding plate 32, the side edges at both ends of the PCB board body 1 are closely attached to the side edges of the folding plate 32. Both ends of the damping rod 37 are welded and fixed to the sliding plate 35 and the strip-shaped seat 31.

[0029] By adopting the above technical solution, the sliding plate 35 slides more stably in the sliding groove 36 of the strip-shaped seat 31. After the PCB board body 1 is installed on the folding plate 32, the PCB board body 1 is more stable on the folding plate 32, and the welding between the damping rod 37 and the sliding plate 35 and the strip-shaped seat 31 is more firm.

[0030] When this embodiment is used, by setting the shock-absorbing component 3, the PCB board body 1 is placed on the folding plate 32 of the moisture-proof box 5, and the mounting bolt 33 is passed through the PCB board body 1 and screwed into the mounting hole 34 of the folding plate 32, so as to achieve the effect of connecting and fixing between the PCB board body 1 and the folding plate 32. When the PCB board body 1 is vibrated, the sliding plates 35 at both ends of the folding plate 32 slide in the sliding grooves 36 of the strip-shaped seat 31. The sliding plates 35 slide to compress the damping rods 37 and the springs 38. The damping rods 37 and the springs 38 can be used to buffer and shock-absorb the PCB board body 1. By setting the shock-absorbing component 3, the PCB board body 1 can be buffered and shock-absorbed, avoiding damage to the PCB board body 1 caused by vibration; Embodiment

[0031] The difference between this embodiment and Embodiment 1 and Embodiment 2 is that: the heat dissipation component 4 includes a fixed pipe 41, a fan 42, a fixed frame 43, a dust removal net 44 and a drying net 45. Among them, fixed pipes 41 are fixed at both ends of the PCB board body 1. A fixed frame 43 is fixed on one side inside the fixed pipe 41. A fan 42 is installed on the fixed frame 43. A dust removal net 44 is installed on the side inside the fixed pipe 41 away from the fan 42. One end of the dust removal net 44 is fixed with a drying net 45.

[0032] By adopting the above technical solution, when the PCB board body 1 generates heat while working in the moisture-proof box 5, the fans 42 in the two fixed tubes 41 are turned on. The fan 42 in one fixed tube 41 blows air into the moisture-proof box 5, and the fan 42 in the other fixed tube 41 discharges the heat in the moisture-proof box 5 out of the moisture-proof box 5, so as to form an air flow in the moisture-proof box 5. At the same time, the dust removal net 44 and the drying net 45 in the fixed tube 41 block impurities and moisture, preventing dust and moisture from entering the moisture-proof box 5. By setting the heat dissipation component 4, the PCB board body 1 can be cooled, avoiding the influence of the long-term use of the PCB board body 1 in a high-temperature environment on the service life of the PCB board body 1.

[0033] Further in the present invention, the heat dissipation component 4 further includes a clamping block 46, a fixing bolt 47, a clamping groove 48 and a fixing hole 49. Among them, clamping blocks 46 are fixed at both ends of the drying net 45 and the dust removal net 44. A clamping groove 48 corresponding to the clamping block 46 is opened at one end of the fixed tube 41. The clamping block 46 and the fixed tube 41 are connected by a fixing bolt 47, and a fixing hole 49 corresponding to the fixing bolt 47 is opened in the clamping groove 48.

[0034] By adopting the above technical solution, by fixing the clamping blocks 46 at both ends of the dust removal net 44 and the drying net 45, when installing the dust removal net 44 and the drying net 45, the dust removal net 44 and the drying net 45 are inserted into the fixed tube 41, and the clamping blocks 46 at both ends of the dust removal net 44 and the drying net 45 are inserted into the clamping grooves 48 of the fixed tube 41. Then, the fixing bolt 47 is screwed into the fixing hole 49 to achieve the effect of limiting and fixing between the clamping block 46 and the fixed tube 41. By setting the clamping block 46, etc., it is convenient to disassemble, replace or clean the dust removal net 44 and the drying net 45.

[0035] When this embodiment is in use, by setting up the heat dissipation component 4, when the PCB board body 1 generates heat while working in the moisture-proof box 5, the fans 42 in the two fixed pipes 41 are turned on. The fan 42 in one side fixed pipe 41 blows air into the moisture-proof box 5, and the fan 42 in the other side fixed pipe 41 discharges the heat in the moisture-proof box 5 out of the moisture-proof box 5, so as to form an air flow in the moisture-proof box 5. At the same time, the dust removal net 44 and the drying net 45 in the fixed pipe 41 play a role in blocking impurities and moisture, preventing dust and moisture from entering the moisture-proof box 5. By setting up the heat dissipation component 4, the PCB board body 1 can be cooled, avoiding the influence of the long-term use of the PCB board body 1 in a high-temperature environment on the service life of the PCB board body 1. By fixing the clamping blocks 46 at both ends of the dust removal net 44 and the drying net 45, when installing the dust removal net 44 and the drying net 45, the dust removal net 44 and the drying net 45 are inserted into the fixed pipe 41, and the clamping blocks 46 at both ends of the dust removal net 44 and the drying net 45 are inserted into the card slots 48 of the fixed pipe 41. Then, the fixing bolts 47 are screwed into the fixing holes 49 to achieve the effect of limiting and fixing between the clamping blocks 46 and the fixed pipe 41. By setting up the clamping blocks 46, etc., it is convenient to disassemble, replace or clean the dust removal net 44 and the drying net 45.

[0036] In the present invention, the damping rod 37 is an existing publicly disclosed technology, and the selected model is SQS.

[0037] In the present invention, the fan 42 is an existing publicly disclosed technology, and the selected model is AFB0312HA.

[0038] The structures and working principles of the moisture-proof box 5 and the cover plate 6 in the present invention have been disclosed in a moisture-proof device for a PCB circuit board with the Chinese patent application number 2023225163534.

[0039] Working principle and usage process of the present invention: When the moisture-proof and dehumidifying type PCB board is in use, the device is installed at a suitable position. By setting the drying component 2, the desiccant packet 22 is placed into the drying box 21, and then the top plate 24 is placed on the drying box 21. At the same time, the magnetic strip one 25 at the lower end of the top plate 24 adsorbs to the magnetic strip two 26 on the drying box 21, achieving the effect of adsorbing and fixing between the top plate 24 and the drying box 21. The desiccant packet 22 in the drying box 21 can absorb the moisture in the drying box 21 through the through hole 23, achieving the effect of moisture-proof and dehumidifying the interior of the drying box 21. By setting the drying component 2, the interior of the drying box 21 can be dried, avoiding damage to the PCB board body 1 caused by heavy moisture inside the drying box 21. When the top plate 24 is installed, the positioning rods 27 on both sides at the lower end of the top plate 24 enter the positioning holes 28 at the upper end of the drying box 21. By setting the positioning rods 27 and the positioning holes 28, it can play a limiting role in the installation of the top plate 24, making the top plate 24 more stable after installation. By setting the shock-absorbing component 3, the PCB board body 1 is placed on the folding plate 32 of the moisture-proof box 5, and the mounting bolts 33 are passed through the PCB board body 1 and screwed into the mounting holes 34 of the folding plate 32, achieving the effect of connecting and fixing between the PCB board body 1 and the folding plate 32. When the PCB board body 1 is vibrated, the sliding plates 35 at both ends of the folding plate 32 slide in the sliding grooves 36 of the strip-shaped seat 31, and the sliding plates 35 slide to compress the damping rods 37 and the springs 38. The damping rods 37 and the springs 38 can be used to buffer and shock-absorb the PCB board body 1. By setting the shock-absorbing component 3, the PCB board body 1 can be buffered and shock-absorbed, avoiding damage to the PCB board body 1 caused by vibration. By setting the heat dissipation component 4, when the PCB board body 1 works in the moisture-proof box 5, heat is generated. The fans 42 in the two fixed pipes 41 are turned on. The fan 42 in one side fixed pipe 41 blows air into the moisture-proof box 5, and the fan 42 in the other side fixed pipe 41 discharges the heat in the moisture-proof box 5 out of the moisture-proof box 5, thus forming an air flow in the moisture-proof box 5. At the same time, the dust removal net 44 and the drying net 45 in the fixed pipe 41 play a blocking role on impurities and moisture, avoiding dust and moisture from entering the moisture-proof box 5. By setting the heat dissipation component 4, the PCB board body 1 can be cooled by heat dissipation, avoiding the influence of the long-term use of the PCB board body 1 in a high-temperature environment on the service life of the PCB board body 1. By fixing the clamping blocks 46 at both ends of the dust removal net 44 and the drying net 45, when the dust removal net 44 and the drying net 45 are installed, the dust removal net 44 and the drying net 45 are inserted into the fixed pipe 41, and the clamping blocks 46 at both ends of the dust removal net 44 and the drying net 45 are inserted into the card slots 48 of the fixed pipe 41, and then the fixing bolts 47 are screwed into the fixing holes 49, achieving the effect of limiting and fixing between the clamping blocks 46 and the fixed pipe 41. By setting the clamping blocks 46, etc., it is convenient to disassemble, replace or clean the dust removal net 44 and the drying net 45.

[0040] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A moisture-proof and dehumidifying PCB board, comprising a PCB board body (1), wherein the PCB board body (1) is installed in a moisture-proof box (5), and a cover plate (6) is connected to the upper end of the moisture-proof box (5) by bolts, and is characterized in that: Heat dissipation components (4) are provided at both ends of the moisture-proof box (5). The PCB board body (1) is connected to the moisture-proof box (5) through a shock-absorbing component (3). Drying components (2) are provided at both ends inside the moisture-proof box (5). The drying component (2) includes a drying box (21), a desiccant packet (22), through holes (23), a top plate (24), a first magnetic strip (25), and a second magnetic strip (26). Among them, drying boxes (21) are fixed on both sides inside the PCB board body (1). A plurality of through holes (23) are opened at one end of the drying box (21). A desiccant packet (22) is arranged inside the drying box (21). A top plate (24) is arranged at the upper end of the drying box (21). The first magnetic strip (25) is snap-fitted on both sides of the lower end of the top plate (24). The second magnetic strip (26) is snap-fitted at positions corresponding to the first magnetic strip (25) on both sides of the upper end of the drying box (21).

2. The moisture-proof and dehumidifying PCB board according to claim 1, wherein: The drying component (2) further includes positioning rods (27) and positioning holes (28). Among them, positioning rods (27) are fixed on both sides of the lower end of the top plate (24). Positioning holes (28) corresponding to the positioning rods (27) are opened on both sides of the upper end of the drying box (21).

3. A moisture-proof and dehumidifying PCB board according to claim 1, characterized in that: The lower end of the first magnetic strip (25) is flush with the lower end of the top plate (24), and the upper end of the second magnetic strip (26) is flush with the upper end of the drying box (21). A handle is fixed at the middle position of the upper end of the top plate (24).

4. The moisture-proof and dehumidifying PCB board according to claim 2, characterized in that: The lower end of the positioning rod (27) is provided with an arc-shaped structure. After the positioning rod (27) enters the positioning hole (28), the side of the positioning rod (27) is in close contact with the inner wall of the positioning hole (28). The drying box (21) is welded to the moisture-proof box (5) by spot welding.

5. A moisture-proof and dehumidifying PCB board according to claim 1, characterized in that: The shock-absorbing component (3) includes a strip-shaped seat (31), a folding plate (32), mounting bolts (33), mounting holes (34), a sliding plate (35), a sliding groove (36), a damping rod (37), and a spring (38). Among them, folding plates (32) are arranged at positions corresponding to both ends of the PCB board body (1) on both sides inside the moisture-proof box (5). The PCB board body (1) is connected to the folding plate (32) through mounting bolts (33). Mounting holes (34) corresponding to the mounting bolts (33) are provided in the folding plate (32). Sliding plates (35) are fixed on both sides of one end of the folding plate (32). Strip-shaped seats (31) are fixed at positions corresponding to the sliding plates (35) on both sides of the lower end inside the moisture-proof box (5). A sliding groove (36) corresponding to the sliding plate (35) is opened at one end of the strip-shaped seat (31). A damping rod (37) is arranged at the lower end of the sliding plate (35). A spring (38) is sleeved outside the damping rod (37) at the lower end of the sliding plate (35).

6. The moisture-proof and dehumidifying PCB board according to claim 5, wherein: The side of the sliding plate (35) is in close contact with the inner wall of the sliding groove (36). After the PCB board body (1) is installed on the folding plate (32), the side edges of both ends of the PCB board body (1) are in close contact with the side edges of the folding plate (32). Both ends of the damping rod (37) are welded and fixed to the sliding plate (35) and the strip-shaped seat (31).

7. A moisture-proof and dehumidifying PCB board according to claim 1, characterized in that: The heat dissipation component (4) includes a fixed tube (41), a fan (42), a fixing bracket (43), a dust removal net (44) and a drying net (45). Among them, the fixed tubes (41) are fixed at both ends of the PCB board body (1). A fixing bracket (43) is fixed on one side inside the fixed tube (41). The fan (42) is installed on the fixing bracket (43). A dust removal net (44) is installed on the side away from the fan (42) inside the fixed tube (41). One end of the dust removal net (44) is fixed with a drying net (45).

8. A moisture-proof and dehumidifying PCB board according to claim 7, characterized in that: The heat dissipation component (4) further includes a clamping block (46), a fixing bolt (47), a clamping groove (48) and a fixing hole (49). Among them, clamping blocks (46) are fixed at both ends of the drying net (45) and the dust removal net (44). A clamping groove (48) corresponding to the clamping block (46) is opened at one end of the fixed tube (41). The clamping block (46) and the fixed tube (41) are connected by a fixing bolt (47). A fixing hole (49) corresponding to the fixing bolt (47) is opened in the clamping groove (48).

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