Heat dissipation equipment with moisture-proof function for UPS (Uninterrupted Power Supply)

Abstract

The invention relates to the field of UPS (Uninterrupted Power Supply), in particular to a heat dissipation device with a moisture-proof function for a UPS, which comprises a box body, a power supply body and a filter screen, the box body is fixedly connected with a power supply body; a plurality of ventilation openings are formed in the box body; the box body is fixedly connected with a plurality of filter screens which are located at the corresponding ventilation openings. The bending sheet and the expansion sheet are hidden in the temporary storage groove, compared with an existing mode that the bending sheet and the expansion sheet are exposed to the outside after being bent, the overall size of equipment during heat dissipation can be reduced, the bending sheet and the expansion sheet are prevented from being directly exposed to the outside air after being bent downwards, and the service life of the equipment is prolonged. As a result, more dust and impurities adhere to the faces, facing the power source body, of the bent pieces and the expansion pieces after the bent pieces and the expansion pieces are bent, the problem that follow-up use is affected after the dust and impurities adhere to the bent pieces and the expansion pieces is solved, and the problem that dust and impurities on the bent pieces and the expansion pieces need to be manually cleaned after heat dissipation work is finished every time is solved.

Description

Technical Field

[0001] The invention relates to the field of UPS power supply, and in particular to a heat dissipation device for a UPS power supply with a moisture-proof function. Background Art

[0002] A UPS uninterruptible power supply is a power supply that can provide continuous power supply to electronic devices. When the main power supply fails or the quality is poor, it can immediately switch to a backup battery or other alternative power supply to ensure that the connected equipment will not be damaged or stop working due to sudden power outages. It is widely used in server rooms, outdoor communication base stations, etc. When the UPS power supply is working, it will generate a lot of heat, and the heat needs to be dissipated in time to ensure the normal operation of the power supply. For example, the Chinese patent with publication number: CN116133337A discloses a communication power supply cabinet and a communication power supply device, which consists of a bimetallic sheet composed of a bending sheet and an expansion sheet. When the temperature is too high, it automatically rolls up, and the hot air inside the accommodation space is discharged through the heat dissipation port. It can sense the temperature and automatically dissipate heat.

[0003] However, after the bending sheet and the expansion sheet are bent and rolled up, the overall volume of the equipment will be larger, and the side of the bending sheet and the expansion sheet facing the UPS power supply will be directly exposed to the outside air. The dust and impurities in the air will adhere to the side of the bending sheet and the expansion sheet facing the UPS power supply. If the dust and impurities adhered to the bending sheet and the expansion sheet are not cleaned manually after each heat dissipation work, the bending sheet and the expansion sheet will be heated unevenly, affecting the use of the bending sheet and the expansion sheet, and the dust and impurities will increase the temperature required for the bending sheet and the expansion sheet to bend, resulting in the bending sheet and the expansion sheet being unable to open the heat dissipation port when the UPS power supply needs to dissipate heat. In the long run, this will affect the service life of the UPS power supply. If the dust and impurities adhered to the bending sheet and the expansion sheet are cleaned manually after each heat dissipation work, the labor cost will increase. Summary of the invention

[0004] In order to overcome the disadvantages of the existing heat dissipation device that after the bending sheet and the expansion sheet are bent and rolled up, the side of the bending sheet and the expansion sheet facing the UPS power supply is directly exposed to the outside air, and dust impurities in the air will adhere to the side of the bending sheet and the expansion sheet facing the UPS power supply, resulting in uneven heating of the bending sheet and the expansion sheet, which affects the use of the bending sheet and the expansion sheet, the present invention provides a heat dissipation device for a UPS power supply with a moisture-proof function.

[0005] Technical solution: A heat dissipation device for a UPS power supply with a moisture-proof function, comprising a box body, a power supply body and a filter; the box body is fixedly connected to the power supply body; the box body is provided with a plurality of vents; the box body is fixedly connected to a plurality of filters, and the filters are located at the corresponding vents; it also comprises a rotating rod, a bending piece, an expansion piece, a limiting plate, a connecting shaft and a baffle; the box body is rotatably connected to a plurality of rotating rods, and a torsion spring is arranged between the rotating rod and the box body; each rotating rod is fixedly connected to a bending piece with the same number as the vents; each bending piece is fixedly connected to an expansion piece; each bending piece is fixedly connected to a limiting plate; the box body is provided with a plurality of sliding grooves, and the sliding grooves are located at the corresponding vents; all the sliding grooves located at the same vent are slidably connected to a connecting shaft together; each connecting shaft is fixedly connected to a baffle, and the baffle is in contact with the corresponding limiting plate; the box body is provided with a plurality of temporary storage grooves, and the temporary storage grooves are located below the corresponding bending pieces.

[0006] Optionally, a plug plate is also included; the box body is detachably connected with a plurality of plug plates, and the plug plates are in contact with corresponding limit plates.

[0007] Optionally, it also includes a slide plate and a folding cloth; the box body is slidably connected to a plurality of slide plates; the box body is fixedly connected to a plurality of folding cloths, and the folding cloths are fixedly connected to the corresponding slide plates.

[0008] Optionally, the connecting shaft can rotate in the sliding groove; the box body is provided with a plurality of accommodating grooves.

[0009] Optionally, a handle is fixedly connected to each rotating rod.

[0010] Optionally, a rectangular plate is also included; the box body is connected to a plurality of plate groups; each plate group is composed of a plurality of rectangular plates inclined toward the power source body.

[0011] Optionally, it also includes gears, racks and an insulation layer; the rectangular plates are rotatably connected to the box body through connecting rods; each rectangular plate is fixedly connected to a gear; the box body is slidably connected to a plurality of racks, and the racks are meshed with all gears on the corresponding plate group; each rectangular plate is fixedly connected to an insulation layer, and an insulation layer is also arranged in the box body.

[0012] Optionally, it also includes a winding rod, a power cord, a socket strip and a sliding sleeve; the box is rotatably connected to the winding rod, and a torsion spring is provided between the winding rod and the box; the power cord is wound around the winding rod; the box is provided with a placement slot; the placement slot is detachably connected to a socket strip, and the socket strip is connected to the power cord; the box is fixed with a sliding sleeve, and the power cord slides in the sliding sleeve to reduce wear.

[0013] Optionally, it also includes a spring rod and a clamping block; the box body is provided with a rectangular groove; the box body is fixedly connected to a plurality of spring rods; a clamping block is fixedly connected to the telescopic end of each spring rod, the clamping block slides in the rectangular groove, the clamping block contacts the power cord, and the clamping force of the clamping block on the power cord is greater than the torsional force of the torsion spring between the winding rod and the box body; each clamping block is provided with an arc portion.

[0014] Optionally, the box body is provided with an inclined portion.

[0015] The beneficial effects of the present invention are as follows: the present invention hides the bending sheet and the expansion sheet in the temporary storage groove, which can reduce the overall volume of the equipment during heat dissipation compared to the existing method in which the bending sheet and the expansion sheet are exposed to the outside after being bent, and avoids the bending sheet and the expansion sheet being directly exposed to the outside air after being bent downward, resulting in more dust and impurities adhering to the side of the bending sheet and the expansion sheet facing the power supply body after being bent, thereby solving the problem of the bending sheet and the expansion sheet being affected by the adhesion of dust and impurities and affecting subsequent use, and solving the problem of the need to manually clean the dust and impurities on the bending sheet and the expansion sheet after each heat dissipation work is completed.

[0016] The diversion effect of the inclined rectangular plate allows the outside air to be concentrated and blown toward the power supply body, which is beneficial to the heat dissipation of the power supply body. When the temperature is low in winter, the rectangular plates are rotated to a closed state in which they are in contact with each other by manually pulling the rack horizontally. The power supply body is insulated by the insulation layer set on the rectangular plate and the insulation layer set in the box, so as to reduce the impact of low temperature on the power supply of the power supply body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of the heat dissipation device for UPS power supply with moisture-proof function disclosed by the present invention; Figure 2 A schematic diagram of the internal structure of a box disclosed by the heat dissipation device for a UPS power supply with moisture-proof function of the present invention; Figure 3 A schematic diagram of the combined structure of a box, a bending sheet, an expansion sheet, a limit plate, a connecting shaft, a baffle, a plug plate and a rectangular plate disclosed in the heat dissipation device for a UPS power supply with a moisture-proof function of the present invention; Figure 4 A schematic diagram of the use status of the rotating rod, the bending sheet, the expansion sheet, the baffle, the sliding plate and the folding cloth disclosed in the heat dissipation device for a UPS power supply with moisture-proof function of the present invention; Figure 5 A schematic diagram of the use status of the rotating rod, the bending piece, the expansion piece and the baffle disclosed in the heat dissipation device for a UPS power supply with moisture-proof function of the present invention; Figure 6 A schematic diagram of the combined structure of the bending sheet, the limiting plate, the baffle plate and the plug plate disclosed in the heat dissipation device for a UPS power supply with moisture-proof function of the present invention; Figure 7 It is a schematic diagram of the use state of the box, winding rod, power cord, socket strip and sliding sleeve disclosed in the heat dissipation device for UPS power supply with moisture-proof function of the present invention; Figure 8 The present invention is a schematic diagram of the use status of a power cord, a socket strip, a sliding sleeve, a spring rod and a clamping block disclosed in the heat dissipation device for a UPS power supply with a moisture-proof function.

[0018] Markings in the accompanying drawings: 1-box, 2-power body, 3-filter, 101-rotating rod, 102-bending piece, 103-expansion piece, 104-limiting plate, 105-connecting shaft, 106-baffle, 107-handle, 108-plug plate, 109-slide plate, 1010-folding cloth, 201-rectangular plate, 203-gear, 204-rack, 205-insulation layer, 301-winding rod, 302-power cord, 303-plug strip, 304-sleeve, 305-spring rod, 306-block, 11-slide groove, 12-temporary storage groove, 13-accommodating groove, 14-placing groove, 15-inclined portion, 16-ventilation port, 17-rectangular groove, 3061-arc portion. DETAILED DESCRIPTION

[0019] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0020] Example 1 A heat dissipation device for UPS power supply with moisture-proof function, such as Figure 1-Figure 6 As shown, it includes a box body 1, a power source body 2 and a filter screen 3; the box body 1 is fixedly connected to the power source body 2; the box body 1 is provided with a plurality of vents 16; the box body 1 is fixedly connected to a plurality of filter screens 3, and the filter screens 3 are located at the corresponding vents 16; It also includes a rotating rod 101, a bending piece 102, an expansion piece 103, a limit plate 104, a connecting shaft 105 and a baffle 106; the box body 1 is rotatably connected to two rotating rods 101, and a torsion spring is arranged between the rotating rod 101 and the box body 1; each rotating rod 101 is fixedly connected to a bending piece 102 with the same number as the vents 16; each bending piece 102 is fixedly connected to an expansion piece 103; each bending piece 102 is fixedly connected to a limit plate 104; the box body 1 is provided with a plurality of slide grooves 11, and the slide grooves 11 are located at the corresponding vents 16; all the slide grooves 11 located at the same vent 16 are slidably connected to a connecting shaft 105; each connecting shaft 105 is fixedly connected to a baffle 106, and the baffle 106 is in contact with the corresponding limit plate 104; the box body 1 is provided with a plurality of temporary storage grooves 12, and the temporary storage grooves 12 are located below the corresponding bending pieces 102.

[0021] It also includes an insertion plate 108; the box body 1 is detachably connected to two insertion plates 108, and the insertion plates 108 are in contact with the corresponding limit plates 104. When not in use, the insertion plates 108 block the limit plates 104 and act as a latch insurance to prevent the bending piece 102 and the expansion piece 103 from bending downward due to external heat under normal circumstances, causing false triggering.

[0022] It also includes a slide plate 109 and a folding cloth 1010; the box body 1 is slidably connected to the two slide plates 109; the box body 1 is fixedly connected to the two folding cloths 1010, and the folding cloths 1010 are fixedly connected to the corresponding slide plates 109. When not in use, the slide plates 109 are manually pulled to slide upward until the folding cloth 1010 seals the temporary storage groove 12 to prevent external dust and impurities from entering the temporary storage groove 12.

[0023] The connecting shaft 105 can rotate in the slide groove 11; the box body 1 is provided with a plurality of receiving grooves 13. When not in use, the connecting shaft 105 and the baffle 106 are manually rotated to a horizontal state so that the baffle 106 enters the receiving groove 13 and hides, thereby reducing the volume of the device and facilitating transportation.

[0024] A handle 107 is fixedly connected to each rotating rod 101 , so that the bending piece 102 and the expansion piece 103 can be reset by manually rotating the handle 107 .

[0025] In the following description, Figure 1 is a viewing angle reference, wherein the side where the folded cloth 1010 is marked is the front side, and the side where the box body 1 is marked is the right side; Initially, the bending piece 102 and the expansion piece 103 are in a vertical state, closing the vent 16 to prevent foreign dust from entering the box body 1 and polluting the power supply body 2. Initially, the connecting shaft 105 and the baffle 106 are at the top of the slide slot 11 under the limiting action of the limiting plate 104. When in use, the power supply body 2 provides emergency power to external electrical equipment. Heat is gradually generated when the power supply body 2 is running. As the heat accumulates in the box body 1, when the temperature in the box body 1 is too high, the pressure difference on the surfaces of the bending piece 102 and the expansion piece 103 breaks through the force balance, and the bending piece 102 and the expansion piece 103 bend downward. The bending piece 102 and the expansion piece 103 open the vent 16, and the outside air can pass through the vent 16 and then enter the box body 1 after being filtered by the filter 3 to dissipate the heat of the power supply body 2, thereby realizing automatic heat dissipation. After the bending, the bending piece 102 and the expansion piece 103 change their overall center of gravity, so that the bending piece 102 and the expansion piece 103 first drive the rotating rod 101 to rotate under their own gravity, and the torsion spring at the connection between the rotating rod 101 and the box body 1 is compressed. Figure 4As shown, it should be noted that the total gravity of the bending piece 102 and the expansion piece 103 is greater than the torsion of the torsion spring. The bending piece 102 and the expansion piece 103 can drive the rotating rod 101 to rotate under the action of their own gravity. At this time, a part of the bending piece 102 and the expansion piece 103 enters the temporary storage groove 12. When the bending piece 102 and the expansion piece 103 bend downward, the bending piece 102 synchronously drives the limiting plate 104 to move, so that the limiting plate 104 is separated from the baffle 106. The baffle 106 slides downward along the slide groove 11 under the action of its own gravity until the baffle 106 contacts the lower side of the temporary storage groove 12. During the sliding process of the baffle 106 along the slide groove 11, the baffle 106 completely pushes the bent bending piece 102 and the expansion piece 103 into the temporary storage groove 12 to hide them, so as to prevent dust and moisture for the bending piece 102 and the expansion piece 103. Compared with the existing bending piece 102 and the expansion piece 103 exposed after bending In the external world, after the bending piece 102 and the expansion piece 103 are hidden in the temporary storage groove 12, the overall volume of the device during heat dissipation can be reduced, and the bending piece 102 and the expansion piece 103 are prevented from being directly exposed to the outside air after being bent downward, resulting in more dust and impurities adhering to the side of the bending piece 102 and the expansion piece 103 facing the power supply body 2 after being bent, so as to solve the problem of the bending piece 102 and the expansion piece 103 being affected by the adhesion of dust and impurities and affecting the subsequent use, and solve the problem of manually cleaning the dust and impurities on the bending piece 102 and the expansion piece 103 after each heat dissipation work is completed; it should be noted that the purpose of setting the torsion spring at the connection between the rotating rod 101 and the box body 1 is to prevent the bending piece 102 and the expansion piece 103 from driving the rotating rod 101 to rotate rapidly, resulting in the bending piece 102 and the expansion piece 103 colliding with the box body 1, affecting the subsequent use of the bending piece 102 and the expansion piece 103.

[0026] After the heat dissipation is completed, the baffle 106 is manually pulled upward to the initial position at the top, and then the handle 107 is used to manually rotate the rotating rod 101, so that the rotating rod 101 drives the bending piece 102 and the expansion piece 103 to rotate clockwise 180 degrees from right to left, until the bending piece 102 and the expansion piece 103 are in an upward bending state, and then the bending piece 102 and the expansion piece 103 are manually smoothed upward so that the bending piece 102 and the expansion piece 103 are vertically covered on the vent 16 again to complete the reset.

[0027] It should be noted that when the present invention is not in use, the slide plate 109 is manually pulled to slide upward until the folded cloth 1010 seals the temporary storage tank 12 to prevent external dust and impurities from entering the temporary storage tank 12, and the connecting shaft 105 and the baffle 106 can be manually rotated to a horizontal state so that the baffle 106 enters the receiving tank 13 and is hidden, thereby reducing the size of the device and facilitating transportation.

[0028] Example 2 On the basis of Example 1, Figure 2 and Figure 3 As shown, it also includes a rectangular plate 201; the box body 1 is connected to two plate groups that are symmetrically distributed front and back; each plate group is composed of a number of rectangular plates 201 inclined toward the power supply body 2.

[0029] It also includes a gear 203, a rack 204 and an insulation layer 205; the rectangular plate 201 is rotatably connected to the box body 1 through a connecting rod; each rectangular plate 201 is fixedly connected to a gear 203; the box body 1 is slidably connected to two racks 204, and the racks 204 are meshed with all the gears 203 on the corresponding plate group; each rectangular plate 201 is fixedly connected to a insulation layer 205, and an insulation layer 205 is also arranged in the box body 1.

[0030] When the power supply body 2 is dissipating heat, the outside air can be concentratedly blown toward the power supply body 2 through the diversion effect of the inclined rectangular plate 201, which is beneficial to the heat dissipation of the power supply body 2; when the temperature is low in winter, in order to reduce the impact of low temperature on the power supply of the power supply body 2, the rack 204 can be manually pulled to move horizontally, the rack 204 drives the gear 203 to rotate, and the gear 203 drives the corresponding rectangular plate 201 to rotate, so that the rectangular plate 201 rotates to a closed state in contact with each other, and the power supply body 2 is insulated by the insulation layer 205 set on the rectangular plate 201 and the insulation layer 205 set in the box 1 to reduce the impact of low temperature on the power supply of the power supply body 2.

[0031] Example 3 On the basis of Example 2, Figure 1-Figure 2 and Figure 7-Figure 8 As shown, it also includes a winding rod 301, a power cord 302, a socket strip 303 and a sliding sleeve 304; the box body 1 is rotatably connected to the winding rod 301, and a torsion spring is provided between the winding rod 301 and the box body 1; the power cord 302 is wound around the winding rod 301; the box body 1 is provided with a placement groove 14; the placement groove 14 is detachably connected with the socket strip 303, and the socket strip 303 is connected to the power cord 302; the box body 1 is fixed with a sliding sleeve 304, and the power cord 302 slides in the sliding sleeve 304.

[0032] It also includes a spring rod 305 and a clamping block 306; the box body 1 is provided with a rectangular groove 17; the box body 1 is fixedly connected to two spring rods 305; each telescopic end of the spring rod 305 is fixedly connected to a clamping block 306, the clamping block 306 slides in the rectangular groove 17, the clamping block 306 contacts the power cord 302, and the clamping force of the clamping block 306 on the power cord 302 is greater than the torsional force of the torsion spring between the winding rod 301 and the box body 1, so as to prevent the power cord 302 from automatically retracting under the action of the torsion spring of the winding rod 301 after being pulled out; each clamping block 306 is provided with an arc portion 3061, which reduces damage to the power cord 302 when the power cord 302 is manually pulled out.

[0033] The box body 1 is provided with an inclined surface 15 , which facilitates the removal of the power strip 303 from the box body 1 and facilitates the dust and impurities removed from the power cord 302 by the sliding sleeve 304 to fall out of the placement groove 14 .

[0034] When a UPS power supply is needed outdoors to ensure that the electrical equipment is powered off, the socket strip 303 can be manually removed from the placement slot 14 and the socket strip 303 and the power cord 302 can be pulled out together. Figure 7 As shown, in order to facilitate outdoor electricity use, it should be noted that when the power cord 302 is pulled out, the winding rod 301 is driven to rotate under the action of friction, and the torsion spring between the winding rod 301 and the box body 1 is compressed. When the present invention is not needed, the torsion spring resets and drives the winding rod 301 to reel in the power cord 302, so as to facilitate the reset of the socket strip 303.

[0035] The power cord 302 will fall to the ground after being pulled out. The power cord 302 is easy to adhere to dust and other impurities. Therefore, when the power cord 302 is rolled up under the elastic force of the torsion spring, the power cord 302 and the sliding sleeve 304 slide relative to each other, and the dust adhering to the power cord 302 is removed through the sliding sleeve 304 to ensure that the power cord 302 is clean.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A heat dissipation device for a UPS power supply with a moisture-proof function, comprising a housing (1), a power supply body (2) and a filter (3); the housing (1) is fixedly connected to the power supply body (2); the housing (1) is provided with a plurality of vents (16); the housing (1) is fixedly connected to a plurality of filter screens (3), the filter screens (3) being located at corresponding vents (16); the characteristics are: The box body (106) further comprises a rotating rod (101), a bending piece (102), an expansion piece (103), a limiting plate (104), a connecting shaft (105) and a baffle (106); the box body (1) is rotatably connected to a plurality of rotating rods (101), and a torsion spring is provided between the rotating rods (101) and the box body (1); each rotating rod (101) is fixedly connected to a bending piece (102) having the same number as the vents (16); each bending piece (102) is fixedly connected to an expansion piece (103); each bending piece (102) is fixedly connected to a limiting plate (105); The box body (1) is provided with a plurality of slide grooves (11), and the slide grooves (11) are located at corresponding vents (16); all the slide grooves (11) located at the same vent (16) are slidably connected to a connecting shaft (105); each connecting shaft (105) is fixedly connected to a baffle plate (106), and the baffle plate (106) is in contact with the corresponding limiting plate (104); the box body (1) is provided with a plurality of temporary storage grooves (12), and the temporary storage grooves (12) are located below the corresponding bending pieces (102).

2. The heat dissipation device for UPS power supply with moisture-proof function according to claim 1, characterized in that: It also includes an inserting plate (108); the box body (1) is detachably connected to a plurality of inserting plates (108), and the inserting plates (108) are in contact with corresponding limiting plates (104).

3. The heat dissipation device for UPS power supply with moisture-proof function according to claim 2, characterized in that: It also includes a slide plate (109) and a folding cloth (1010); the box body (1) is slidably connected to a plurality of slide plates (109); the box body (1) is fixedly connected to a plurality of folding cloths (1010), and the folding cloths (1010) are fixedly connected to corresponding slide plates (109).

4. The heat dissipation device for UPS power supply with moisture-proof function according to claim 1, characterized in that: The connecting shaft (105) can rotate in the slide groove (11); and the box body (1) is provided with a plurality of accommodating grooves (13).

5. The heat dissipation device for UPS power supply with moisture-proof function according to claim 1, characterized in that: A handle (107) is fixedly connected to each rotating rod (101).

6. The heat dissipation device for UPS power supply with moisture-proof function according to claim 4, characterized in that: It also includes a rectangular plate (201); the box body (1) is connected to a plurality of plate groups; each plate group is composed of a plurality of rectangular plates (201) inclined toward the power source body (2).

7. The heat dissipation device for UPS power supply with moisture-proof function according to claim 6, characterized in that: It also includes a gear (203), a rack (204) and a heat-insulating layer (205); the rectangular plate (201) is rotatably connected to the box body (1) via a connecting rod; each rectangular plate (201) is fixedly connected to a gear (203); the box body (1) is slidably connected to a plurality of racks (204), and the racks (204) are meshed with all the gears (203) on the corresponding plate group; each rectangular plate (201) is fixedly connected to a heat-insulating layer (205), and the heat-insulating layer (205) is also arranged in the box body (1).

8. The heat dissipation device for UPS power supply with moisture-proof function according to claim 1, characterized in that: The invention also comprises a winding rod (301), a power cord (302), a socket strip (303) and a sliding sleeve (304); the box (1) is rotatably connected to the winding rod (301), and a torsion spring is provided between the winding rod (301) and the box (1); the power cord (302) is wound around the winding rod (301); the box (1) is provided with a placement groove (14); the socket strip (303) is detachably connected in the placement groove (14), and the socket strip (303) is connected to the power cord (302); the box (1) is fixedly connected to the sliding sleeve (304), and the power cord (302) slides in the sliding sleeve (304) to reduce wear.

9. The heat dissipation device for UPS power supply with moisture-proof function according to claim 8, characterized in that: The invention also comprises a spring rod (305) and a clamping block (306); the box body (1) is provided with a rectangular groove (17); the box body (1) is fixedly connected with a plurality of spring rods (305); a clamping block (306) is fixedly connected to the telescopic end of each spring rod (305); the clamping block (306) slides in the rectangular groove (17); the clamping block (306) contacts the power cord (302); the clamping force of the clamping block (306) on the power cord (302) is greater than the torsion force of the torsion spring between the winding rod (301) and the box body (1); each clamping block (306) is provided with an arc portion (3061).

10. The heat dissipation device for UPS power supply with moisture-proof function according to claim 8, characterized in that: The box body (1) is provided with an inclined surface (15).

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