A heat dissipation device for a UPS power supply with a moisture-proof function

Abstract

The present invention relates to the field of UPS power supplies, and particularly to a heat dissipation device for a UPS power supply with a moisture-proof function, including a box body, a power supply body, and a filter screen; the box body is fixedly connected with the power supply body; the box body is provided with a plurality of ventilation openings; the box body is fixedly connected with a plurality of filter screens, and the filter screens are located at the corresponding ventilation openings. In the present invention, by hiding the bending pieces and the expansion pieces in the temporary storage grooves, compared with the existing method in which the bending pieces and the expansion pieces are exposed to the outside after bending, the overall volume of the device during heat dissipation can be reduced, and it can be avoided that the sides of the bending pieces and the expansion pieces facing the power supply body adhere to more dust and impurities after bending downward, so as to solve the problem that the subsequent use is affected after the bending pieces and the expansion pieces adhere to dust and impurities, and solve the problem that it is necessary to manually clean the dust and impurities on the bending pieces and the expansion pieces after each heat dissipation work is completed.

Description

Technical Field

[0001] The present invention relates to the field of UPS power supplies, and particularly 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 for electronic devices. It can immediately switch to a backup battery or other alternative power sources when the main power supply fails or has poor quality, ensuring that the connected devices will not be damaged or stop working due to sudden power outages. It has wide applications in server rooms, outdoor communication base stations, etc. When a UPS power supply is working, it will generate a large amount of heat itself and needs to dissipate the heat in time to ensure the normal operation of the power supply. For example, a Chinese patent with the publication number: CN116133337A discloses a communication power cabinet and a communication power supply device, which consists of a bimetallic sheet composed of a bending piece and an expansion piece. When the temperature is too high, it will automatically roll up, and the hot air inside the accommodation space is discharged through the heat dissipation port, which can sense the temperature and automatically dissipate heat.

[0003] However, after the bending piece and the expansion piece are bent and rolled up, the overall volume of the device will be relatively large, and the side of the bending piece and the expansion piece facing the UPS power supply is directly exposed to the outside air. Dust and impurities in the air will adhere to the side of the bending piece and the expansion piece facing the UPS power supply. If the dust and impurities adhering to the bending piece and the expansion piece are not cleaned manually after each heat dissipation work, it will cause uneven heating of the bending piece and the expansion piece, affecting the use of the bending piece and the expansion piece. Moreover, the dust and impurities will cause the temperature required for the bending piece and the expansion piece to bend to increase, resulting in the bending piece and the expansion piece being unable to open the heat dissipation port when the UPS power supply needs to dissipate heat. In the long run, it will affect the service life of the UPS power supply. And if the dust and impurities adhering to the bending piece and the expansion piece are cleaned manually after each heat dissipation work, it will increase the labor cost. Summary of the Invention

[0004] In order to overcome the defect that after the bending piece and the expansion piece of the existing heat dissipation device are bent and rolled up, the side of the bending piece and the expansion piece facing the UPS power supply is directly exposed to the outside air, and dust and impurities in the air will adhere to the side of the bending piece and the expansion piece facing the UPS power supply, resulting in uneven heating of the bending piece and the expansion piece and affecting the use of the bending piece and the expansion piece, 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 moisture-proof function, including a box body, a power supply body and a filter screen; the box body is fixedly connected with the power supply body; the box body is provided with a plurality of ventilation openings; the box body is fixedly connected with a plurality of filter screens, and the filter screens are located at the corresponding ventilation openings; it also includes a rotating rod, a bending piece, an expansion piece, a limiting plate, a connecting shaft and a baffle; the box body is rotatably connected with 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 with bending pieces having the same number as the ventilation openings; each bending piece is fixedly connected with an expansion piece; each bending piece is fixedly connected with a limiting plate; the box body is provided with a plurality of sliding grooves, and the sliding grooves are located at the corresponding ventilation openings; all the sliding grooves at the same ventilation opening jointly slidably connect a connecting shaft; each connecting shaft is fixedly connected with a baffle, and the baffle contacts 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, it further includes a plug board; the box body is detachably connected with a plurality of plug boards, and the plug boards contact the corresponding limiting plates.

[0007] Optionally, it further includes a sliding board and a folding cloth; the box body is slidably connected with a plurality of sliding boards; the box body is fixedly connected with a plurality of folding cloths, and the folding cloths are fixedly connected with the corresponding sliding boards.

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

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

[0010] Optionally, it further includes a rectangular plate; the box body is connected with a plurality of plate groups; each plate group is composed of a plurality of rectangular plates inclined towards the power supply body.

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

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

[0013] Optionally, it further includes a spring rod and a clamping block; the box body is provided with a rectangular groove; several spring rods are fixedly connected to the box body; a clamping block is fixedly connected to the telescopic end of each spring rod, and 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-shaped portion.

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

[0015] The beneficial effects of the present invention are as follows: by hiding the bending piece and the expansion piece in the temporary storage groove, compared with the existing method where the bending piece and the expansion piece are exposed to the outside after bending, the overall volume of the device during heat dissipation can be reduced, and it is avoided that the bending piece and the expansion piece are directly exposed to the outside air after bending downward, resulting in more dust and impurities adhering to the side of the bending piece and the expansion piece facing the power supply body after bending, so as to solve the problem that the subsequent use is affected after the bending piece and the expansion piece adhere to dust and impurities, and solve the problem that it is necessary to manually clean the dust and impurities on the bending piece and the expansion piece after each heat dissipation work is completed.

[0016] Through the guiding action of the inclined rectangular plate, the outside air is concentrated and blown towards the power supply body, which is beneficial to the heat dissipation of the power supply body; when the temperature is relatively low in winter, by manually pulling the rack to move horizontally, the rectangular plates are rotated to the closed state where they are in contact with each other, and the power supply body is insulated by the heat insulation layer provided on the rectangular plate and the heat insulation layer provided in the box body, so as to reduce the influence 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 a UPS power supply with moisture-proof function disclosed by the present invention;

[0018] Figure 2 It is a schematic internal structure diagram of the box body of the heat dissipation device for a UPS power supply with moisture-proof function disclosed by the present invention;

[0019] Figure 3 It is a schematic combined structure diagram of the box body, bending piece, expansion piece, limiting plate, connecting shaft, baffle plate, inserting plate and rectangular plate of the heat dissipation device for a UPS power supply with moisture-proof function disclosed by the present invention;

[0020] Figure 4 It is a schematic use state diagram of the rotating rod, bending piece, expansion piece, baffle plate, sliding plate and folding cloth of the heat dissipation device for a UPS power supply with moisture-proof function disclosed by the present invention;

[0021] Figure 5 It is a schematic use state diagram of the rotating rod, bending piece, expansion piece and baffle plate of the heat dissipation device for a UPS power supply with moisture-proof function disclosed by the present invention;

[0022] Figure 6Combined structural schematic diagram of the bending piece, limiting plate, baffle plate and insertion plate disclosed in the heat dissipation device for a UPS power supply with moisture-proof function according to the present invention;

[0023] Figure 7 Schematic diagram of the use state of the box body, winding rod, power cord, socket strip and sliding sleeve disclosed in the heat dissipation device for a UPS power supply with moisture-proof function according to the present invention;

[0024] Figure 8 Schematic diagram of the use state of the power cord, socket strip, sliding sleeve, spring rod and clamping block disclosed in the heat dissipation device for a UPS power supply with moisture-proof function according to the present invention.

[0025] Marks in the attached drawings: 1-box body, 2-power supply body, 3-filter screen, 101-rotating rod, 102-bending piece, 103-expansion piece, 104-limiting plate, 105-connecting shaft, 106-baffle plate, 107-handle, 108-insertion plate, 109-skid plate, 1010-folded cloth, 201-rectangular plate, 203-gear, 204-rack, 205-thermal insulation layer, 301-winding rod, 302-power cord, 303-socket strip, 304-sliding sleeve, 305-spring rod, 306-clamping block, 11-chute, 12-temporary storage groove, 13-accommodation groove, 14-placement groove, 15-inclined surface part, 16-ventilation opening, 17-rectangular groove, 3061-arc part. Detailed implementation manners

[0026] The implementation manners of the present invention will be described below with reference to the attached drawings.

[0027] Embodiment 1

[0028] A heat dissipation device for a UPS power supply with moisture-proof function, as Figures 1 - 6 shown, includes a box body 1, a power supply body 2 and a filter screen 3; the box body 1 is fixedly connected with the power supply body 2; the box body 1 is provided with a plurality of ventilation openings 16; the box body 1 is fixedly connected with a plurality of filter screens 3, and the filter screens 3 are located at the corresponding ventilation openings 16;

[0029] It also includes a rotating rod 101, a bending piece 102, an expansion piece 103, a limiting plate 104, a connecting shaft 105 and a baffle 106; Two rotating rods 101 are rotatably connected to the box body 1, and a torsion spring is arranged between the rotating rod 101 and the box body 1; Each rotating rod 101 is fixedly connected with bending pieces 102 having the same number as the ventilation openings 16; Each bending piece 102 is fixedly connected with an expansion piece 103; Each bending piece 102 is fixedly connected with a limiting plate 104; The box body 1 is provided with a plurality of sliding grooves 11, and the sliding grooves 11 are located at the corresponding ventilation openings 16; All the sliding grooves 11 located at the same ventilation opening 16 are jointly slidably connected with a connecting shaft 105; Each connecting shaft 105 is fixedly connected with a baffle 106, and the baffle 106 contacts 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.

[0030] It also includes a plug board 108; Two plug boards 108 are detachably connected to the box body 1, and the plug boards 108 contact the corresponding limiting plates 104. When not in use, the plug boards 108 block the limiting plates 104 and act as plug pins to prevent the bending pieces 102 and the expansion pieces 103 from being bent downward under the action of external heat during normal times, thus avoiding mis-triggering.

[0031] It also includes a sliding plate 109 and a folding cloth 1010; Two sliding plates 109 are slidably connected to the box body 1; The box body 1 is fixedly connected with two folding cloths 1010, and the folding cloths 1010 are fixedly connected with the corresponding sliding plates 109. When not in use, manually pull the sliding plates 109 upward until the folding cloths 1010 seal the temporary storage grooves 12 to prevent external dust and impurities from entering the temporary storage grooves 12.

[0032] The connecting shaft 105 can rotate in the sliding groove 11; The box body 1 is provided with a plurality of accommodating grooves 13. When not in use, manually rotate the connecting shaft 105 and the baffle 106 to the horizontal state so that the baffle 106 enters the accommodating grooves 13 to be hidden, thereby reducing the volume of the device and facilitating handling.

[0033] Each rotating rod 101 is fixedly connected with a handle 107 to facilitate manually rotating the handle 107 to reset the bending piece 102 and the expansion piece 103.

[0034] In the following description, Figure 1 is used as the perspective reference, where the side where the folding cloth 1010 label is located is the front side, and the side where the box body 1 label is located is the right side;

[0035] Initially, the bending piece 102 and the expansion piece 103 are in a vertical state, closing the ventilation opening 16 to prevent external impurities and dust from entering the box body 1 and contaminating the power supply body 2. Initially, the connecting shaft 105 and the baffle 106 are at the top of the sliding groove 11 under the limiting action of the limiting plate 104. During use, the power supply body 2 supplies emergency power to external electrical equipment. As heat gradually generates during the operation of the power supply body 2, 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 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 ventilation opening 16, and external air can enter the box body 1 through the ventilation opening 16 and then pass through the filter screen 3 for filtering to dissipate heat from the power supply body 2, realizing the function of automatic heat dissipation;

[0036] Due to the change in the overall center of gravity of the bent bending piece 102 and expansion piece 103, the bending piece 102 and expansion piece 103 drive the rotating rod 101 to rotate first under their own gravity, and the torsion spring at the connection between the rotating rod 101 and the box body 1 is compressed, as Figure 4 shown. It should be noted that the total gravity of the bending piece 102 and the expansion piece 103 is greater than the torsion force of the torsion spring. The bending piece 102 and the expansion piece 103 can drive the rotating rod 101 to rotate under 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, causing the limiting plate 104 to disengage from the baffle 106. The baffle 106 slides downward along the sliding groove 11 under its own gravity until the baffle 106 contacts the lower side of the temporary storage groove 12. During the process of the baffle 106 sliding downward along the sliding groove 11, the baffle 106 completely pushes the bent bending piece 102 and expansion piece 103 into the temporary storage groove 12 to hide them, so as to prevent dust and moisture from the bending piece 102 and the expansion piece 103. Compared with the existing method where the bending piece 102 and the expansion piece 103 are exposed to the outside after bending, 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 it can be avoided that the side of the bending piece 102 and the expansion piece 103 facing the power supply body 2 adheres to more dust and impurities after bending downward, so as to solve the problem that the adhesion of dust and impurities to the bending piece 102 and the expansion piece 103 affects subsequent use, and solve the problem that it is necessary to manually clean 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 impact between the bending piece 102 and the expansion piece 103 and the box body 1, which affects the subsequent use of the bending piece 102 and the expansion piece 103.

[0037] After heat dissipation is completed, manually pull the baffle 106 upward to the initial position at the top. Subsequently, manually drive the rotating rod 101 to rotate through the handle 107, so that the rotating rod 101 drives the bending piece 102 and the expansion piece 103 to rotate 180 degrees clockwise from the perspective of looking from right to left until the bending piece 102 and the expansion piece 103 are in an upward bending state. Subsequently, manually smooth the bending piece 102 and the expansion piece 103 upward so that the bending piece 102 and the expansion piece 103 are vertically covered on the ventilation opening 16 again to complete the reset.

[0038] It should be noted that when the present invention is not in use, manually pull the sliding plate 109 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, and manually can rotate the connecting shaft 105 and the baffle 106 to a horizontal state so that the baffle 106 enters the receiving groove 13 to be hidden, thereby reducing the volume of the device and facilitating handling.

[0039] Embodiment 2

[0040] On the basis of Embodiment 1, as Figure 2 and Figure 3 shown, it further includes a rectangular plate 201; the box body 1 is connected with two sets of plates distributed symmetrically in the front and back; each set of plates is composed of a plurality of rectangular plates 201 inclined towards the power supply body 2.

[0041] It further includes a gear 203, a rack 204 and a heat insulation layer 205; the rectangular plate 201 is rotationally connected to the box body 1 through a connecting rod; each rectangular plate 201 is fixedly connected with a gear 203; the box body 1 is slidably connected with two racks 204, and the racks 204 are engaged with all the gears 203 on the corresponding set of plates; each rectangular plate 201 is fixedly connected with a heat insulation layer 205, and a heat insulation layer 205 is also provided in the box body 1.

[0042] When the power supply body 2 dissipates heat, the outside air can be concentrated and blown towards the power supply body 2 through the guiding action of the inclined rectangular plate 201, which is beneficial to dissipating heat from the power supply body 2; when the temperature is relatively low in winter, in order to reduce the influence of low temperature on the power supply of the power supply body 2, manually pull the rack 204 to move horizontally, the rack 204 drives the gear 203 to rotate, the gear 203 drives the corresponding rectangular plate 201 to rotate, so that the rectangular plate 201 rotates to a closed state of mutual contact, and the power supply body 2 is insulated by the heat insulation layer 205 provided on the rectangular plate 201 and the heat insulation layer 205 provided in the box body 1 to reduce the influence of low temperature on the power supply of the power supply body 2.

[0043] Embodiment 3

[0044] On the basis of Embodiment 2, as Figures 1 - 2 and Figures 7 - 8As shown in the figure, it further 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 winding rod 301 winds the power cord 302; the box body 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 body 1 is fixedly connected with the sliding sleeve 304, and the power cord 302 slides in the sliding sleeve 304.

[0045] It further 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 with two spring rods 305; a clamping block 306 is fixedly connected to the telescopic end of each spring rod 305, and 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, preventing 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-shaped portion 3061 to reduce damage to the power cord 302 when the power cord 302 is manually pulled out.

[0046] The box body 1 is provided with an inclined surface portion 15, which is convenient for taking out the socket strip 303 from the box body 1 and at the same time convenient for the dust and impurities removed from the power cord 302 by the sliding sleeve 304 to fall out of the placement groove 14.

[0047] When it is necessary to use a UPS power supply outdoors to ensure that the electrical equipment is continuously powered, the user can manually remove the socket strip 303 from the placement groove 14 and pull out the socket strip 303 and the power cord 302 together, as Figure 7 shown, for outdoor power 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 to drive the winding rod 301 to wind up the power cord 302, so as to facilitate the reset of the socket strip 303.

[0048] After the power cord 302 is pulled out, it will fall to the ground, and the power cord 302 is prone to adhering to dust and other impurities. Therefore, when the power cord 302 is wound up under the elastic force of the torsion spring, the power cord 302 slides relative to the sliding sleeve 304, and the dust adhered to the power cord 302 is removed through the sliding sleeve 304 to ensure the cleanliness of the power cord 302.

[0049] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall 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); 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).

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 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).

4. 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).

5. The heat dissipation device for UPS power supply with moisture-proof function according to claim 3, 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).

6. The heat dissipation device for UPS power supply with moisture-proof function according to claim 5, 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).

7. 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.

8. The heat dissipation device for UPS power supply with moisture-proof function according to claim 7, 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).

9. The heat dissipation device for UPS power supply with moisture-proof function according to claim 7, characterized in that: The box body (1) is provided with an inclined surface (15).

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