Constant-voltage power supply device with high safety

Abstract

The invention discloses a high-safety constant-voltage power supply device which comprises a shell, a heat dissipation plate is fixedly connected to the outer surface of the shell, the interior of the shell is hollow, heat dissipation holes are symmetrically formed in the front end and the rear end of the outer surface of the shell, sealing assemblies are arranged on the inner sides of the heat dissipation holes, and each sealing assembly comprises a notch formed in the inner wall of the shell. And a storage groove is formed in the inner surface of the notch. The sealing assembly is arranged, the heat dissipation holes in the surface of the shell can be sealed through the sealing plate, so that dust in the external environment can be effectively prevented from entering the shell, the influence of the dust on the heat dissipation effect of the voltage stabilizer can be effectively reduced, the heat dissipation holes are automatically opened and closed according to the temperature change in the shell, and the heat dissipation efficiency of the voltage stabilizer is improved. Therefore, the internal temperature of the shell can be maintained in a proper range, and the stability and reliability of the power supply in the long-time working process can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power equipment, and in particular to a constant voltage power supply device with high safety. Background Art

[0002] A constant voltage power supply is an electronic device that can provide a stable voltage output. Its core feature is that it can maintain a constant output voltage when the load changes or the input voltage fluctuates. Constant voltage power supply devices achieve voltage stability through a variety of technical paths (such as linear voltage regulation, switching control, ferromagnetic resonance, etc.) and are widely used in electronics, industry, medical and other fields.

[0003] During operation, constant-voltage power supply devices generate heat due to energy conversion. Poor heat dissipation can lead to device overheating, reduced efficiency, or even damage. Therefore, existing constant-voltage power supply devices often employ air cooling. For example, Chinese patent publication No. CN217721891U discloses a high-frequency, high-voltage, constant-current power supply heat dissipation device. This device uses a heat dissipation fan to drive air flow to cool the constant-voltage power supply. The air flowing into the housing through the air intake scoop cools the device due to the throttling expansion effect, effectively improving the heat dissipation effect without changing the heat dissipation fan.

[0004] When the existing constant-voltage power supply device is ventilated for heat dissipation, moisture and dust in the air will enter the constant-voltage power supply along with the air. After the moisture enters the constant-voltage power supply, condensation will form inside the constant-voltage power supply when the temperature difference is large. Condensation will not only increase the risk of short circuit in the constant-voltage power supply, but will also cause corrosion to metal electrical components, thereby adversely affecting the working life of the constant-voltage power supply. After the dust enters the constant-voltage power supply, it will adhere to the surface of the electrical components, thereby affecting the normal heat dissipation of the electrical components. Summary of the Invention

[0005] The present invention provides a constant voltage power supply device with high safety to solve the above technical problems.

[0006] To achieve the above object, the present invention provides the following technical solutions: A highly safe constant voltage power supply device comprises a housing, the interior of the housing being hollow, a heat sink fixedly connected to the outer surface of the housing, heat dissipation holes symmetrically formed at the front and rear ends of the outer surface of the housing, and a sealing assembly provided inside the heat dissipation holes; The sealing assembly includes a notch opened on the inner wall of the shell, a receiving groove is opened on the inner surface of the notch, a metal plate is fixedly connected to the inner surface of the receiving groove, a sealing plate is fixedly connected to the side of the metal plate away from the receiving groove, a pin is fixedly connected to the inner surface of the shell, the outer surface of the pin is rotatably connected to the sealing plate, and the outer surface of the sealing plate is in contact with the inner wall of the notch.

[0007] Preferably, the metal plate has a U-shaped structure, a cavity is embedded inside the sealing plate, the metal plate is made of thermal expansion metal, the number of the pins and sealing plates are two groups and are distributed corresponding to the heat dissipation holes, and the sealing plate is made of lightweight material.

[0008] Preferably, a moisture absorption component is provided on the inner side of the shell, and the moisture absorption component includes a limiting groove opened at the lower end of the inner surface of the shell, and a moisture absorption plate is slidably connected to the inner side of the limiting groove. The moisture absorption plate is arc-shaped, and the upper end of the moisture absorption plate is fixedly connected to the inner surface of the shell. The moisture absorption plate is made of elastic material.

[0009] Preferably, a movable groove is provided on the inner surface of the shell, a sliding rod is slidably connected to the inner side of the movable groove, a cleaning plate is fixedly connected to the outer surface of the sliding rod, the number of the cleaning plates is several groups and distributed in a ring array, the cleaning plate is in sliding contact with the outer surface of the lower end of the moisture absorption plate, a traction bar is fixedly connected to the outer surface of the sliding rod, and the traction bar is fixedly connected to the outer surface of the sealing plate at one end away from the moisture absorption plate.

[0010] Preferably, a cooling assembly is provided on the lower side of the shell, and the cooling assembly includes an active cavity opened inside the shell, a heat sink is fixedly connected to the outer surface of the lower end of the shell, a liquid storage cavity is embedded inside the heat sink, and the upper end of the liquid storage cavity is connected to the interior of the active cavity, the number of the heat sinks is several groups and distributed in a linear array, and an appropriate amount of coolant is provided inside the active cavity and the liquid storage cavity.

[0011] Preferably, a toggle assembly is provided on the inner side of the shell, and the toggle assembly includes a piston plate slidably connected to the inner surface of the movable cavity, and an elastic band is fixedly connected to the outer surface of the piston plate, and the elastic band is fixedly connected to the inner surface of the movable cavity at one end away from the piston plate.

[0012] Preferably, a pad is fixedly connected to the lower end of the inner surface of the shell, a sac is fixedly connected to the outer surface of the upper end of the pad, the outer surface of the upper end of the sac is fixedly connected to the outer surface of the sealing plate, the sac is arc-shaped, an air duct is fixedly connected to the outer surface of the lower end of the sac, the air duct is communicated with the interior of the active cavity, and a control valve is provided inside the air duct.

[0013] Preferably, a vibration component is provided on the outside of the moisture absorption plate, and the vibration component includes an ear seat fixedly connected to the outer surface of the upper end of the pad, the outer surface of the ear seat is fixedly connected to a movable rod, the outer surface of the movable rod is rotatably connected to an extrusion plate, and the outer surface of the extrusion plate is in sliding contact with the moisture absorption plate.

[0014] Preferably, a fixing rod is fixedly connected to the inner side of the shell, a voltage stabilizer is provided on the outer surface of the fixing rod, a sealing sleeve and a wiring port are provided at both the front and rear ends of the outer surface of the shell, and the power cord extends to the inside of the shell through the sealing sleeve.

[0015] Preferably, connecting rods are fixedly connected to the front and rear ends of the outer surface of the shell, and the number of the connecting rods is four groups and distributed at the four corners of the shell. The front and rear ends of the outer surface of the shell are symmetrically fixedly connected to mounting plates, and the outer surface of the mounting plate is provided with a mounting groove.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. This solution is equipped with a sealing assembly that can seal the heat dissipation holes on the surface of the housing through a sealing plate, thereby effectively reducing the entry of dust from the external environment into the housing, thereby effectively reducing the impact of dust on the heat dissipation effect of the voltage stabilizer. The heat dissipation holes are automatically opened and closed according to the temperature changes inside the housing, thereby maintaining the internal temperature of the housing within an appropriate range, thereby improving the stability and reliability of the power supply during long-term operation; 2. This solution is equipped with a moisture absorption component. The moisture absorption plate is composed of a fine mesh structure, which can fully absorb moisture in the air, thereby effectively reducing moisture from entering the interior of the housing and reducing the chance of condensation inside the housing. The cleaning plate can scrape and clean dust attached to the surface of the moisture absorption plate, effectively reducing dust adhesion on the surface of the moisture absorption plate, thereby ensuring the moisture absorption effect of the moisture absorption plate; 3. This solution sets up a vibration component, which can shake off the dust attached to the surface of the moisture absorbing plate through the movement of the moisture absorbing plate, thereby further reducing the residual dust on the surface of the moisture absorbing plate, thereby ensuring the permeability and adsorption effect of the moisture absorbing plate, not only further improving the adsorption effect of moisture inside the shell, but also extending the working time of the moisture absorbing plate to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of a constant voltage power supply device with high safety according to the present invention; Figure 2 This is a schematic top view of the structure of a constant voltage power supply device with high safety according to the present invention; Figure 3 for Figure 2 Cross-sectional view along the AA axis; Figure 4 for Figure 3 A magnified schematic diagram of point B in the middle; Figure 5 This is a schematic structural diagram of a cooling assembly in a constant voltage power supply device with high safety according to the present invention; Figure 6 for Figure 3 The enlarged schematic diagram of point C in the middle; Figure 7 for Figure 3 The enlarged schematic diagram of point D in the middle; Figure 8 for Figure 5 Enlarged schematic diagram of point E in the middle.

[0019] Description of reference numerals: 10. Moisture absorbing plate; 11. Shell; 12. Connecting rod; 13. Sealing sleeve; 14. Mounting plate; 15. Heat dissipation plate; 16. Wiring port; 17. Mounting slot; 18. Heat dissipation hole; 19. Fixing rod; 20. Voltage stabilizer; 21. Storage slot; 22. Metal plate; 23. Sealing plate; 24. Pin; 25. Pulling strip; 26. Cavity; 27. Capsule; 28. Air duct; 29. ​​Pad; 30. Extrusion plate; 31. Ear seat; 32. Movable rod; 33. Piston plate; 34. Elastic band; 35. Sliding rod; 36. Cleaning plate; 37. Movable slot; 39. Liquid storage chamber; 40. Heat dissipation seat; 41. Notch; 42. Movable chamber; 43. Limiting slot. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figures 1 to 8 , the present invention provides a technical solution: A highly safe constant voltage power supply device includes a shell 11, a heat sink 15 is fixedly connected to the outer surface of the shell 11, the interior of the shell 11 is hollow, and heat dissipation holes 18 are symmetrically opened at the front and rear ends of the outer surface of the shell 11, and a sealing component is provided inside the heat dissipation hole 18.

[0022] Among them, the sealing assembly includes a slot 41 opened on the inner wall of the shell 11, the inner surface of the slot 41 is provided with a receiving slot 21, the inner surface of the receiving slot 21 is fixedly connected to a metal plate 22, the metal plate 22 is fixedly connected to the side away from the receiving slot 21, the inner surface of the shell 11 is fixedly connected to a pin shaft 24, the outer surface of the pin shaft 24 is rotatably connected to the sealing plate 23, and the outer surface of the sealing plate 23 is in contact with the inner wall of the slot 41.

[0023] The metal plate 22 may be a U-shaped structure, and a cavity 26 is embedded inside the sealing plate 23. The metal plate 22 is made of thermal expansion metal. The number of the pins 24 and the sealing plates 23 are both two groups and are distributed corresponding to the heat dissipation holes 18. The sealing plates 23 are made of lightweight materials.

[0024] A fixing rod 19 can be fixedly connected to the inner side of the shell 11, and a voltage stabilizer 20 is provided on the outer surface of the fixing rod 19. A sealing sleeve 13 and a wiring port 16 are provided at both the front and rear ends of the outer surface of the shell 11. The power cord extends to the inside of the shell 11 through the sealing sleeve 13.

[0025] By adopting the above technical solution, when the power supply is in use, the voltage stabilizer 20 is installed inside the shell 11 through the fixing rod 19. The shell 11 can provide good protection for the voltage stabilizer 20 inside it. At the same time, there is a certain gap between the voltage stabilizer 20 and the inner wall of the shell 11, so that air can flow through the gap between the shell 11 and the voltage stabilizer 20, so that the voltage stabilizer 20 can dissipate heat evenly. Several groups of heat dissipation plates 15 on the surface of the shell 11 can effectively increase the contact area with the air, thereby improving the heat dissipation effect inside the shell 11. The sealing sleeve 13 on the surface of the shell 11 can improve the sealing effect between the power cord and the shell 11. The wiring port 16 on the surface of the shell 11 is used for quick plugging of the data cable. The shell 11 rotatably supports the sealing plate 23 through the pin shaft 24. The sealing plate 23 will fit the inner wall of the shell 11 under the elastic force of the metal plate 22. The heat dissipation holes 18 on the surface of the shell 11 can be sealed through the sealing plate 23, thereby effectively reducing the dust in the external environment from entering the interior of the shell 11, thereby effectively reducing the dust from the external environment from entering the interior of the shell 11, thereby effectively reducing the heat dissipation effect of the voltage stabilizer 20. The cavity 26 opened inside the sealing plate 23 can reduce the deadweight of the sealing plate 23 to a certain extent, thereby reducing the flipping resistance of the sealing plate 23 to a certain extent. The voltage stabilizer 20 will continuously generate heat as the current flows during operation. After working for a period of time, the temperature inside the shell 11 will continue to rise, and the metal plate 22 will gradually expand due to the heat, and its shape will flip from a U-shaped structure to a straight line. At this time, the metal plate 22 will push the sealing plate 23, so that the sealing plate 23 will flip away from the heat dissipation hole 18 with the pin 24 as the fulcrum. As the sealing plate 23 gradually loses contact with the heat dissipation hole 18, the heat dissipation hole 18 will be opened to allow external air to enter the shell 11. The two groups of heat dissipation holes 18 arranged symmetrically can facilitate air convection inside the shell 11, thereby accelerating ventilation and heat dissipation inside the shell 11. By providing a sealing component, the heat dissipation holes 18 can be automatically opened and closed according to the temperature changes inside the shell 11, so that the temperature inside the shell 11 can be maintained within an appropriate range, thereby improving the stability and reliability of the power supply during long-term operation.

[0026] Specifically, such as Figure 3 、 Figure 6 and Figure 7 As shown, a moisture absorption component is provided on the inner side of the shell 11, and the moisture absorption component includes a limiting groove 43 opened at the lower end of the inner surface of the shell 11. A moisture absorption plate 10 is slidably connected to the inner side of the limiting groove 43. The moisture absorption plate 10 is arc-shaped, and the upper end of the moisture absorption plate 10 is fixedly connected to the inner surface of the shell 11. The moisture absorption plate 10 is made of elastic material.

[0027] A movable groove 37 is provided on the inner surface of the shell 11, and a sliding rod 35 is slidably connected to the inner side of the movable groove 37. A cleaning plate 36 is fixedly connected to the outer surface of the sliding rod 35. The number of the cleaning plates 36 is several groups and distributed in a ring array. The cleaning plates 36 are in sliding contact with the outer surface of the lower end of the moisture absorption plate 10. A traction bar 25 is fixedly connected to the outer surface of the sliding rod 35. The traction bar 25 is fixedly connected to the outer surface of the sealing plate 23 at one end away from the moisture absorption plate 10.

[0028] By adopting the above technical solution, when the shell 11 is ventilated and heat-dissipating, the moisture in the air will enter the shell 11 together with the air. In order to reduce the probability of moisture forming condensation inside the shell 11, a moisture absorption component is provided. When working, when the air enters the shell 11 through the heat dissipation holes 18, the air will contact the surface of the moisture absorption plate 10. The moisture absorption plate 10 is composed of a fine mesh structure and can fully absorb the moisture in the air, thereby effectively reducing the moisture from entering the shell 11, thereby reducing the probability of condensation inside the shell 11. At the same time, the moisture absorption plate 10 can filter the dust in the air. The lower end of the moisture absorption plate 10 is located inside the limiting groove 43, so that the moisture absorption plate 10 can be in the limiting groove 43. The cleaning plate 36 is moved to the left of the cleaning plate 36 and the cleaning plate 36 is moved to the right of the cleaning plate 36. When the cleaning plate 36 is in the closed position, the cleaning plate 36 is moved to the right of the cleaning plate 36 and the cleaning plate 36 is moved to the left of the cleaning plate 36. When the cleaning plate 36 is in the closed position, the cleaning plate 36 is moved to the right of the cleaning plate 36 and the cleaning plate 36 is moved to the left of the cleaning plate 36. When the cleaning plate 36 is in the closed position, the cleaning plate 36 is moved to the right of the cleaning plate 36 and the cleaning plate 36 is moved to the right of the cleaning plate 36.

[0029] Specifically, such as Figure 5 、 Figure 6 and Figure 8As shown, a cooling assembly is provided on the lower side of the shell 11, and the cooling assembly includes an active cavity 42 opened inside the shell 11. A heat sink 40 is fixedly connected to the outer surface of the lower end of the shell 11, and a liquid storage cavity 39 is embedded inside the heat sink 40. The upper end of the liquid storage cavity 39 is connected to the interior of the active cavity 42. The number of the heat sinks 40 is several groups and distributed in a linear array, and an appropriate amount of coolant is provided inside the active cavity 42 and the liquid storage cavity 39.

[0030] By adopting the above technical solution, the heat sink 40 on the lower side of the shell 11 can effectively increase the contact area between the shell 11 and the air, thereby further improving the heat dissipation effect inside the shell 11. The active cavity 42 and the liquid storage cavity 39 are filled with an appropriate amount of coolant, which can absorb the heat inside the shell 11 and then transfer the heat to the outside of the shell 11 through the heat sink 40, so that the temperature inside the shell 11 can be maintained within an appropriate range, thereby further improving the heat dissipation efficiency inside the shell 11.

[0031] Specifically, such as Figure 5 and Figure 8 As shown, a toggle assembly is provided on the inner side of the shell 11, and the toggle assembly includes a piston plate 33 that is slidably connected to the inner surface of the active cavity 42, and an elastic band 34 is fixedly connected to the outer surface of the piston plate 33, and the elastic band 34 is fixedly connected to the inner surface of the active cavity 42 at one end away from the piston plate 33.

[0032] A pad 29 is fixedly connected to the lower end of the inner surface of the shell 11, and a sac 27 is fixedly connected to the outer surface of the upper end of the pad 29. The outer surface of the upper end of the sac 27 is fixedly connected to the outer surface of the sealing plate 23. The sac 27 is arc-shaped, and an air guide tube 28 is fixedly connected to the outer surface of the lower end of the sac 27. The air guide tube 28 is connected to the interior of the active cavity 42, and a control valve is provided inside the air guide tube 28.

[0033] By adopting the above technical solution, in order to improve the fluidity of the coolant inside the active cavity 42 and the liquid storage cavity 39, a toggle assembly is provided. When the sealing plate 23 is flipped to the side away from the heat dissipation hole 18, the sealing plate 23 cooperates with the pad 29 to squeeze the capsule 27. At this time, the gas inside the capsule 27 will enter the active cavity 42 through the air guide tube 28, and the piston plate 33 inside the active cavity 42 will be pushed by the gas. During the movement, the piston plate 33 will push the coolant inside the active cavity 42, thereby causing the coolant to flow irregularly inside the active cavity 42 and the liquid storage cavity 39. , so that the coolant is in full contact with the inner wall of the active cavity 42, thereby further improving the heat absorption effect of the coolant. The piston plate 33 will pull the elastic belt 34 during the movement. When the sealing plate 23 moves in the opposite direction, the gas re-enters the inside of the sac 27 through the control valve inside the air guide tube 28. At this time, the piston plate 33 moves in the opposite direction and resets under the elastic force of the elastic belt 34. The movement of the piston plate 33 can disturb the coolant inside the active cavity 42 again, thereby increasing the flow rate of the coolant, and further improving the heat dissipation effect inside the shell 11.

[0034] Specifically, such as Figure 6 As shown, a vibration component is provided on the outside of the moisture-absorbing plate 10, and the vibration component includes an ear seat 31 fixedly connected to the outer surface of the upper end of the pad 29, and the outer surface of the ear seat 31 is fixedly connected to a movable rod 32, and the outer surface of the movable rod 32 is rotatably connected to an extrusion plate 30, and the outer surface of the extrusion plate 30 is in sliding contact with the moisture-absorbing plate 10.

[0035] By adopting the above technical solution, the pad 29 fixes and supports the movable rod 32 through the ear seat 31, and supports the extrusion plate 30 by rotation through the movable rod 32. When the sliding rod 35 drives the cleaning plate 36 to move to the lower side along the movable groove 37, the sliding rod 35 will contact the upper surface of the extrusion plate 30. At this time, the extrusion plate 30 will flip downward at a certain angle under the weight of the sliding rod 35, and the moisture absorption plate 10 will be squeezed and pushed by the extrusion plate 30. At this time, the lower end of the moisture absorption plate 10 will slide along the inner limit groove 43 under the thrust of the extrusion plate 30. After the sliding rod 35 is out of contact with the extrusion plate 30, the moisture absorbing plate 10 will move in the opposite direction and reset under the action of its own elastic force, so that the moisture absorbing plate 10 can swing to a certain extent. The movement of the moisture absorbing plate 10 can shake off the dust attached to the surface of the moisture absorbing plate 10, thereby further reducing the residual dust on the surface of the moisture absorbing plate 10, thereby ensuring the permeability and adsorption effect of the moisture absorbing plate 10, not only further improving the adsorption effect of moisture inside the shell 11, but also extending the working time of the moisture absorbing plate 10 to a certain extent.

[0036] Specifically, such as Figure 1As shown, the front and rear ends of the outer surface of the shell 11 are fixedly connected with connecting rods 12. The number of the connecting rods 12 is four and they are distributed at the four corners of the shell 11. The front and rear ends of the outer surface of the shell 11 are symmetrically fixed with mounting plates 14. The outer surface of the mounting plate 14 is provided with a mounting groove 17.

[0037] By adopting the above technical solution, the connecting rod 12 on the surface of the shell 11 can clamp and fix the front and rear ends of the shell 11, thereby effectively improving the structural strength of the shell 11. The mounting plate 14 on the surface of the shell 11 cooperates with the mounting groove 17 to realize the rapid installation and fixation of the shell 11, thereby reducing the installation difficulty of the shell 11 to a certain extent.

[0038] Working principle: The voltage stabilizer 20 will continuously generate heat as the current flows during operation. At this time, the metal plate 22 will push the sealing plate 23, causing the sealing plate 23 to flip away from the heat dissipation hole 18 with the pin shaft 24 as the fulcrum. The two sets of heat dissipation holes 18 arranged symmetrically can facilitate air convection inside the shell 11, thereby accelerating the ventilation and heat dissipation inside the shell 11. When the air enters the shell 11 through the heat dissipation holes 18, the air will contact the surface of the moisture absorption plate 10. The moisture absorption plate 10 is composed of a fine mesh structure and can fully absorb moisture in the air. The cleaning plate 36 will slide in contact with the outer surface of the moisture absorption plate 10 during the movement. The dust attached to the surface of the moisture absorption plate 10 can be scraped and cleaned by the cleaning plate 36, and the shell can be cooled by the coolant. 11 absorbs the heat inside, and then transfers the heat to the outside of the shell 11 through the heat sink 40, so that the temperature inside the shell 11 can be maintained within an appropriate range, and the piston plate 33 inside the active cavity 42 is pushed by the gas. The piston plate 33 pushes the coolant inside the active cavity 42 during the movement, so that the coolant is in full contact with the inner wall of the active cavity 42, thereby further improving the heat absorption effect of the coolant, and the lower end of the moisture absorbing plate 10 slides along the inside of the limiting groove 43 under the thrust of the extrusion plate 30. The movement of the moisture absorbing plate 10 can shake off the dust attached to the surface of the moisture absorbing plate 10, thereby further reducing the residual dust on the surface of the moisture absorbing plate 10, thereby ensuring the permeability and adsorption effect of the moisture absorbing plate 10.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A highly safe constant voltage power supply device, characterized by: The housing (11) comprises a hollow interior, a heat dissipation plate (15) fixedly connected to the outer surface of the housing (11), heat dissipation holes (18) symmetrically opened at the front and rear ends of the outer surface of the housing (11), and a sealing assembly provided inside the heat dissipation hole (18); The sealing assembly comprises a notch (41) provided on the inner wall of the housing (11), a receiving groove (21) provided on the inner surface of the notch (41), a metal plate (22) fixedly connected to the inner surface of the receiving groove (21), a sealing plate (23) fixedly connected to the side of the metal plate (22) away from the receiving groove (21), a pin shaft (24) fixedly connected to the inner surface of the housing (11), an outer surface of the pin shaft (24) being rotatably connected to the sealing plate (23), and an outer surface of the sealing plate (23) being in contact with the inner wall of the notch (41).

2. A highly safe constant voltage power supply device according to claim 1, characterized in that: The metal plate (22) has a U-shaped structure, and a cavity (26) is embedded in the sealing plate (23). The metal plate (22) is made of thermal expansion metal. The pins (24) and the sealing plates (23) are both in two groups and are distributed corresponding to the heat dissipation holes (18). The sealing plates (23) are made of lightweight materials.

3. The high-safety constant voltage power supply device according to claim 1, characterized in that: A moisture absorption component is provided inside the shell (11), and the moisture absorption component includes a limiting groove (43) provided at the lower end of the inner surface of the shell (11). A moisture absorption plate (10) is slidably connected inside the limiting groove (43). The moisture absorption plate (10) is in an arc shape. The upper end of the moisture absorption plate (10) is fixedly connected to the inner surface of the shell (11). The moisture absorption plate (10) is made of elastic material.

4. The high-safety constant voltage power supply device according to claim 1, characterized in that: A movable groove (37) is provided on the inner surface of the shell (11), and a slide rod (35) is slidably connected to the inner side of the movable groove (37), and a cleaning plate (36) is fixedly connected to the outer surface of the slide rod (35). The number of the cleaning plates (36) is several groups and they are distributed in a ring array. The cleaning plates (36) are in sliding contact with the outer surface of the lower end of the moisture absorption plate (10), and a traction bar (25) is fixedly connected to the outer surface of the sealing plate (23) at one end of the traction bar (25) away from the moisture absorption plate (10).

5. The high-safety constant voltage power supply device according to claim 3, characterized in that: A cooling assembly is provided on the lower side of the shell (11), and the cooling assembly includes an active cavity (42) opened inside the shell (11). A heat sink (40) is fixedly connected to the outer surface of the lower end of the shell (11), and a liquid storage cavity (39) is embedded in the inner side of the heat sink (40). The upper end of the liquid storage cavity (39) is connected to the inside of the active cavity (42). The number of the heat sinks (40) is several groups and is distributed in a linear array. A proper amount of coolant is provided inside the active cavity (42) and the liquid storage cavity (39).

6. A constant voltage power supply device with high safety according to claim 5, characterized in that: A toggle assembly is provided inside the housing (11), the toggle assembly comprising a piston plate (33) slidably connected to the inner surface of the active cavity (42), an elastic band (34) fixedly connected to the outer surface of the piston plate (33), and an end of the elastic band (34) away from the piston plate (33) fixedly connected to the inner surface of the active cavity (42).

7. A highly safe constant voltage power supply device according to claim 6, characterized in that: The lower end of the inner surface of the shell (11) is fixedly connected to a pad (29), the outer surface of the upper end of the pad (29) is fixedly connected to a sac (27), the outer surface of the upper end of the sac (27) is fixedly connected to the outer surface of the sealing plate (23), the sac (27) is in an arc shape, the outer surface of the lower end of the sac (27) is fixedly connected to an air guide tube (28), the air guide tube (28) is connected to the interior of the active cavity (42), and a control valve is provided inside the air guide tube (28).

8. The high-safety constant voltage power supply device according to claim 7, characterized in that: A vibration assembly is provided on the outside of the moisture absorption plate (10), and the vibration assembly includes an ear seat (31) fixedly connected to the outer surface of the upper end of the pad (29), a movable rod (32) is fixedly connected to the outer surface of the ear seat (31), and an extrusion plate (30) is rotatably connected to the outer surface of the movable rod (32), and the outer surface of the extrusion plate (30) is in sliding contact with the moisture absorption plate (10).

9. A high-safety constant voltage power supply device according to any one of claims 1 to 8, characterized in that: A fixing rod (19) is fixedly connected to the inner side of the shell (11), and a voltage stabilizer (20) is sleeved on the outer surface of the fixing rod (19). A sealing sleeve (13) and a wiring port (16) are provided at both the front and rear ends of the outer surface of the shell (11), and the power line extends into the interior of the shell (11) through the sealing sleeve (13).

10. The high-safety constant voltage power supply device according to claim 9, characterized in that: Connecting rods (12) are fixedly connected to the front and rear ends of the outer surface of the shell (11), and the number of the connecting rods (12) is four and they are distributed at the four corners of the shell (11). Mounting plates (14) are symmetrically fixedly connected to the front and rear ends of the outer surface of the shell (11), and the outer surface of the mounting plate (14) is provided with a mounting groove (17).

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