Temperature-adjustable general surgery department clinical operation shadowless lamp

Abstract

The temperature-adjustable general surgery department clinical operation shadowless lamp comprises a lampshade, a lamp body, a heat dissipation piece and a heat dissipation fan, the lamp body is fixedly installed at the lower end of the lampshade, the heat dissipation piece is fixedly installed at the upper end of the lamp body, two sets of air bags are fixedly installed in the upper end of the lampshade, and moving rings are fixedly installed at the lower ends of the air bags; and a heat dissipation opening is formed in the lampshade, a heat dissipation plate is rotatably mounted in the heat dissipation opening, the outer side of the output shaft is sleeved with a moving part, and the moving part is located in the vertical plate. According to the general surgery department clinical operation shadowless lamp capable of adjusting the temperature, an air bag can be heated to expand and push a moving ring to move downwards, a heat dissipation plate is separated from a heat dissipation opening, then a heat dissipation fan can exhaust hot air in the shadowless lamp and complete cooling, and the ventilation effect of the shadowless lamp can be guaranteed by controlling the position relation between the heat dissipation plate and the heat dissipation opening; therefore, the temperature adjusting effect of the shadowless lamp is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of shadowless lamps, in particular to a temperature-adjustable shadowless lamp for general surgery department clinical operation. BACKGROUND

[0002] During the clinical operation in the general surgery department, medical staff will use a shadowless lamp to illuminate the operation site. The shadowless lamp is generally provided with a plurality of small illuminating lamps inside, which can complete illumination in multiple directions, avoid shadows at the illumination position, thereby avoiding the influence on the line of sight of medical staff, and can reduce the degree of color distortion. The shadowless lamp is generally used by being hung on the upper end of the arc-shaped installation suspension device during use. The angle needs to be adjusted manually by medical staff during adjustment, and the function of automatic positioning is realized after the angle adjustment is completed. However, the existing general surgery department clinical operation shadowless lamp still has some use defects during use, for example:

[0003] The utility model discloses a general surgery department clinical operation shadowless lamp, which adjusts the position and angle of the shadowless lamp through the adjusting panel and the sterile handle, is simple and quick to operate, greatly improves the convenience, uses the heat exchange pipe and the fan to quickly dissipate heat, avoids heat accumulation, guarantees the comfort of the patient and the safety of the operation, and greatly improves the practicability;

[0004] In the above file, during the temperature adjustment of the shadowless lamp, the fan inside the protective cover needs to work and drive the fan blade to rotate. The hot air inside the protective cover is blown out through the filter screen during the rotation of the fan blade. The filter screen is fixedly installed inside the heat dissipation hole, and the heat dissipation hole and the filter screen are both inclined. During the placement of the shadowless lamp, dust on the surface of the filter screen is likely to be connected, which affects the ventilation effect of the filter screen, thereby affecting the temperature adjustment effect of the shadowless lamp. In addition, the lower end surface of the shadowless lamp is directly exposed to the outside. When the sterile handle at the lower end of the shadowless lamp is used, the lower end surface of the shadowless lamp is likely to be scratched, and dust is likely to adhere to the lower end surface of the shadowless lamp, which is inconvenient.

[0005] In view of the above problems, it is urgent to make innovative design on the basis of the original shadowless lamp structure. SUMMARY

[0006] The present application aims to provide a temperature-adjustable general surgery clinical operation shadowless lamp to solve the problem that the surface of the filter screen is easily connected with dust during the placement of the shadowless lamp, affecting the ventilation effect of the filter screen, thus affecting the temperature adjustment effect of the shadowless lamp, and the lower end surface of the shadowless lamp is directly exposed to the outside, which easily causes the lower end surface of the shadowless lamp to be scratched and easily causes dust to adhere to the lower end surface of the shadowless lamp, thus causing inconvenience.

[0007] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a temperature-adjustable general surgery clinical operation shadowless lamp, comprising a lampshade, a lamp body, a heat dissipation piece and a heat dissipation fan, the lower end of the lampshade is fixedly installed with the lamp body, the upper end of the lamp body is fixedly installed with the heat dissipation piece, and the upper end inside of the lampshade is fixedly installed with the heat dissipation fan, two groups of air bags are fixedly installed inside the upper end of the lampshade, the lower end of the air bag is fixedly installed with a movement ring, and the lower end of the movement ring is fixedly installed with a traction rope, a heat dissipation opening is formed in the inside of the lampshade, a heat dissipation plate is rotatably installed inside the heat dissipation opening, and a torsion spring is nestedly installed inside the upper end of the heat dissipation plate.

[0008] The front and rear ends of the lampshade are fixedly installed with vertical plates, a sliding groove is formed in the side of the vertical plate close to the lampshade, a protection plate is slidably installed inside the sliding groove, a rotating piece is fixedly installed at the lower end of the protection plate, a drive motor is fixedly installed at the left side of the vertical plate, the drive motor is located at the front end of the lampshade, an output shaft is fixedly installed at the output end of the drive motor, and a moving piece is sleeved at the outside of the output shaft and located inside the vertical plate.

[0009] Preferably, a sub-magic tape is fixedly installed at the side of the protection plate close to the lampshade, a mother magic tape is attached to the side of the sub-magic tape away from the protection plate, and a cleaning pad is fixedly installed at the side of the mother magic tape away from the protection plate. By providing the cleaning pad at the upper end of the protection plate, the lower end surface of the shadowless lamp can be cleaned by the cleaning plate during the movement of the protection plate. By limiting the position of the cleaning pad at the upper end of the protection cover through the sub-magic tape and the mother magic tape, the cleaning pad can be easily removed for cleaning or replacement, thus ensuring the convenience of automatic cleaning of the shadowless lamp.

[0010] Preferably, the lamp body is equiangularly arranged at the lower end of the lampshade, and the lamp body and the heat dissipation piece are correspondingly arranged inside the lamp body. The equiangular arrangement of the lamp body at the lower end of the lampshade can provide multiple positions for light sources, avoiding the generation of shadows during the use of the shadowless lamp. The corresponding arrangement of the lamp body and the heat dissipation piece inside the lamp body can quickly absorb the heat generated inside the lamp body through the heat dissipation piece, thus protecting the lamp body itself and improving the heat dissipation effect of the shadowless lamp.

[0011] Preferably, the air bags are arranged in two groups symmetrically about the vertical central axis of the lampshade, and the air bags are connected to the inner surface of the lampshade and the upper surface of the moving ring by bonding, and the air bags are arranged in two groups symmetrically about the vertical central axis of the lampshade, so that the two groups of air bags push the moving ring downward during the process of thermal expansion, and the stability of the moving ring during lifting is ensured by the two groups of air bags.

[0012] Preferably, the moving ring and the heat sink form a traction structure through a traction rope, and the traction rope is arranged in four groups at equal angles about the moving ring, and the moving ring has a ring structure in plan view, and the moving ring and the heat sink form a traction structure through the traction rope, so that the heat sink is driven to move by the traction rope during the movement of the moving ring, and the traction rope is arranged in four groups at equal angles about the moving ring, so that the forces acting on the moving ring during movement are the same.

[0013] Preferably, the heat sink and the lampshade form an elastic structure through a torsion spring, and the heat sink, the torsion spring and the heat dissipation port are arranged in four groups at equal angles about the lampshade, and the heat sink is sealingly connected to the lampshade through the heat dissipation port, and the heat sink and the lampshade form an elastic structure through the torsion spring, so that the torsion spring pushes the heat sink to move inside the lampshade, and the heat sink, the torsion spring and the heat dissipation port are arranged in four groups at equal angles about the lampshade, so that the air exchange effect inside the lampshade is enlarged, the heat dissipation effect of the lampshade is improved, and the heat sink sealingly connected to the lampshade through the heat dissipation port can seal the heat dissipation port by the heat sink when the shadowless lamp is not working, so that dust is prevented from entering the inside of the lampshade.

[0014] Preferably, the protection plate and the vertical plate form a sliding structure through a sliding groove, and the protection plate has a semicircular structure in plan view, and the protection plate is arranged in two groups symmetrically about the vertical central axis of the vertical plate, and the protection plate and the vertical plate form a sliding structure through the sliding groove, so that the two groups of protection plates slide inside the vertical plate through the sliding groove, and the two groups of protection plates are connected by a plane, so that the lower end of the lampshade is sealingly protected, and the self-protection effect of the shadowless lamp is improved.

[0015] Preferably, the rotating member is slidingly connected to the moving member, and the moving member is threadedly connected to the output shaft, and the threads on the outer sides of the left and right ends of the output shaft have opposite directions, and the rotating member and the moving member are slidingly connected, so that the moving member pushes the rotating member to slide and rotate inside the moving member during movement, and the threads on the outer sides of the left and right ends of the output shaft have opposite directions, so that the two groups of moving members move relative to each other on the outer side of the output shaft during rotation of the output shaft.

[0016] Preferably, the sub magic tape is connected with the mother magic tape, and the cleaning pad at the upper end of the mother magic tape is tightly attached to the lower end surface of the lamp body, and the sub magic tape, the mother magic tape and the cleaning pad are arranged corresponding to the upper end of the protection plate, the sub magic tape and the mother magic tape are connected with the mother magic tape, and the cleaning pad is convenient to be taken off from the upper end of the protection plate for replacement or cleaning through the sub magic tape and the mother magic tape, and the cleaning pad is tightly attached to the lower end surface of the lamp body, so that the cleaning effect of the cleaning pad on the lower end surface of the lamp shade is guaranteed.

[0017] Compared with the prior art, the present application has the following advantages:

[0018] 1. In the process of adjusting the temperature of the general surgery clinical operation shadowless lamp, the air bag is heated and expanded to push the moving ring downward, at this time the torsion spring is expanded to push the heat dissipation plate and the heat dissipation port apart, then the heat dissipation fan can exhaust the hot air in the shadowless lamp and complete the cooling, by controlling the positional relationship between the heat dissipation plate and the heat dissipation port, the ventilation effect of the shadowless lamp can be guaranteed, thereby improving the temperature adjusting effect of the shadowless lamp, and dust can be prevented from entering the inside of the shadowless lamp.

[0019] 2. In the process of moving the protection plate at the lower end surface of the shadowless lamp, the output shaft drives the two groups of moving members to move and drives the two groups of protection plates to move away from each other through the rotating member, after the protection plates move to the two ends of the sliding groove, the moving members make the two groups of protection plates rotate to the vertical state through the rotating member, so as to avoid affecting the illumination of the shadowless lamp, and the lower end surface of the shadowless lamp can be protected through the two groups of protection plates, and dust adhesion can be reduced.

[0020] 3. The cleaning pad moves with the two groups of protection plates and cleans the lower end surface of the shadowless lamp, and in the process of replacing or cleaning the cleaning pad, the sub magic tape and the mother magic tape are separated to take off the cleaning pad for cleaning or replacement, and the convenience of cleaning the lower end surface of the shadowless lamp is effectively improved through the arrangement of the sub magic tape, the mother magic tape and the cleaning pad. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a schematic view of the present application in a vertical section structure;

[0022] Figure 2 It is a schematic view of the present application in a vertical structure;

[0023] Figure 3 It is a schematic view of the present application in a bottom view structure;

[0024] Figure 4 It is a schematic view of the present application in a moving ring bottom view structure;

[0025] Figure 5 It is a schematic diagram of the cross-sectional structure of the heat dissipation plate of the present application;

[0026] Figure 6 It is a schematic diagram of the cross-sectional structure of the vertical plate of the present application;

[0027] Figure 7 It is a schematic diagram of the cross-sectional structure of the left protection plate of the present application;

[0028] Figure 8 It is a schematic diagram of the cross-sectional structure of the left protection plate of the present application;

[0029] In the figure: 1, lampshade; 2, lamp body; 3, heat dissipation piece; 4, heat dissipation fan; 5, air bag; 6, moving ring; 7, traction rope; 8, heat dissipation port; 9, heat dissipation plate; 10, torsion spring; 11, vertical plate; 12, sliding groove; 13, protection plate; 14, rotating piece; 15, drive motor; 16, output shaft; 17, moving piece; 18, sub magic tape; 19, mother magic tape; 20, cleaning pad. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0031] Please refer to 1- Figure 8 The present application provides a technical solution: a temperature-adjustable general surgery clinical operation shadowless lamp, comprising a lampshade 1, a lamp body 2, a heat dissipation piece 3, a heat dissipation fan 4, an air bag 5, a moving ring 6, a traction rope 7, a heat dissipation port 8, a heat dissipation plate 9, a torsion spring 10, a vertical plate 11, a sliding groove 12, a protection plate 13, a rotating piece 14, a drive motor 15, an output shaft 16, a moving piece 17, a sub magic tape 18, a mother magic tape 19, and a cleaning pad 20.

[0032] The lower end of the lampshade 1 is fixedly installed with the lamp body 2, the upper end of the lamp body 2 is fixedly installed with the heat dissipation piece 3, the upper end of the lampshade 1 is fixedly installed with the heat dissipation fan 4 inside, two groups of air bags 5 are fixedly installed inside the upper end of the lampshade 1, the lower end of the air bag 5 is fixedly installed with the motion ring 6, the lower end of the motion ring 6 is fixedly installed with the traction rope 7, the inside of the lampshade 1 is provided with the heat dissipation opening 8, the heat dissipation plate 9 is rotatably installed inside the heat dissipation opening 8, the upper end of the heat dissipation plate 9 is nested with the torsion spring 10 inside, the lamp body 2 is equiangularly arranged at the lower end of the lampshade 1, the lamp body 2 and the heat dissipation piece 3 are correspondingly arranged inside the lamp body 2, the air bag 5 is symmetrically arranged with two groups about the vertical central axis of the lampshade 1, the air bag 5 is adhesively connected with the inner surface of the lampshade 1 and the upper surface of the motion ring 6 respectively, the motion ring 6 and the heat dissipation plate 9 constitute a traction structure through the traction rope 7, the traction rope 7 is equiangularly arranged with four groups about the motion ring 6, the motion ring 6 is in a ring structure when viewed from above, the heat dissipation plate 9 and the lampshade 1 constitute an elastic structure through the torsion spring 10, the heat dissipation plate 9, the torsion spring 10 and the heat dissipation opening 8 are equiangularly arranged with four groups about the lampshade 1, and the heat dissipation plate 9 is sealingly connected with the lampshade 1 through the heat dissipation opening 8.

[0033] According to Figures 1-5In use, the adjustable temperature general surgery clinical operation shadowless lamp is placed in the position where work is needed through the arc-shaped gap outside the shadowless lamp, and after the installation of the shadowless lamp is completed, the shadowless lamp can be powered and used. During the use of the shadowless lamp, the lamp body 2 inside the lampshade 1 will illuminate and generate heat. In order to prolong the use time of the shadowless lamp, the heat generated by the lamp body 2 needs to be transported to the outside of the lampshade 1. In this process, the heat generated by the lamp body 2 will cause the temperature inside the lampshade 1 to rise. At this time, the heat sink 3 will absorb the heat generated by the lamp body 2, and the gas inside the air bag 5 will expand and increase the volume of the air bag 5. (The expansion of the air bag 5 is a prior art, and the gas inside meets the use requirements.) During the expansion of the air bag 5, the movement ring 6 is pushed downward. During this process, the cooling fan 4 works and drives the fan to rotate. During the downward movement of the movement ring 6, the distance between the movement ring 6 and the heat dissipation plate 9 becomes shorter, so that the traction rope 7 is in a contracted state. At this time, the contracted torsion spring 10 expands and pushes the heat dissipation plate 9 to rotate. During the rotation of the heat dissipation plate 9, the heat dissipation port 8 is opened. At this time, the cooling fan 4 discharges the hot air inside the lampshade 1, thereby completing the temperature adjustment process of the shadowless lamp. After the internal temperature of the shadowless lamp decreases, the air bag 5 contracts and moves the movement ring 6 upward. At this time, the distance between the movement ring 6 and the heat dissipation plate 9 becomes far, and the movement ring 6 drives the heat dissipation plate 9 to rotate and move to the initial state through the traction rope 7. During the rotation of the heat dissipation plate 9, the torsion spring 10 is wound again. At this time, the heat dissipation plate 9 and the heat dissipation port 8 are sealed. Through the movement of the air bag 5 and the movement ring 6, the connection state between the heat dissipation plate 9 and the heat dissipation port 8 can be controlled, thereby effectively improving the convenience of temperature adjustment of the shadowless lamp.

[0034] The front and rear ends of the lampshade 1 are fixedly provided with vertical plates 11, and the vertical plates 11 are provided with sliding grooves 12 on the side close to the lampshade 1. The sliding grooves 12 are slidably provided with protective plates 13. The lower ends of the protective plates 13 are fixedly provided with rotating members 14. The left sides of the vertical plates 11 are fixedly provided with driving motors 15. The driving motors 15 are located at the front end of the lampshade 1. The output shafts 16 of the driving motors 15 are fixedly provided with output shafts 16. The output shafts 16 are sleeved with movement members 17. The movement members 17 are located in the vertical plates 11. The protective plates 13 and the vertical plates 11 form a sliding structure through the sliding grooves 12. The protective plates 13 are half-circular in plan view and are symmetrically provided with two groups about the vertical central axis of the vertical plates 11. The rotating members 14 are slidably connected with the movement members 17. The movement members 17 are threadedly connected with the output shafts 16. The left and right ends of the output shafts 16 are oppositely threaded.

[0035] According to Figures 1-3 andFigures 5-8 Before the lamp is used, the two sets of protective plates 13 need to be moved from the lower end of the lampshade 1 to the two sides of the lampshade 1, and the driving motor 15 works to drive the output shaft 16 to move, and the output shaft 16 moves to make the two sets of moving members 17 slide in the interior of the vertical plate 11 and move away from each other, and the moving members 17 move to make the rotating members 14 slide and make the protective plates 13 slide in the sliding grooves 12, and the two sets of protective plates 13 slide to move away from each other, and after the protective plates 13 move to the two ends of the sliding grooves 12, the moving members 17 continue to drive the rotating members 14 to move, and the rotating members 14 continue to move to rotate in the interior of the moving members 17 and push the protective plates 13 to rotate, at this time, the rotating members 14 move downward in the interior of the moving members 17, and the protective plates 13 rotate from the horizontal state to the vertical state, at this time, the lamp body 2 can be used for lighting work, and through the movement of the two sets of protective plates 13, the lower end of the lampshade 1 can be effectively protected, and the self-protection effect of the shadowless lamp is improved.

[0036] The side of the protective plate 13 close to the lampshade 1 is fixedly installed with a sub-magic tape 18, the side of the sub-magic tape 18 away from the protective plate 13 is bonded with a mother magic tape 19, and the side of the mother magic tape 19 away from the protective plate 13 is fixedly installed with a cleaning pad 20, the sub-magic tape 18 is bonded with the mother magic tape 19, the upper end of the cleaning pad 20 on the mother magic tape 19 is closely attached to the lower end surface of the lamp body 2, and the sub-magic tape 18, the mother magic tape 19 and the cleaning pad 20 are correspondingly arranged at the upper end of the protective plate 13.

[0037] According to Figure 1 and Figures 6-7 During the movement of the two sets of protective plates 13, the cleaning pad 20 moves synchronously with the two sets of protective plates 13, and the upper end surface of the cleaning pad 20 is closely attached to the lower end surfaces of the lampshade 1 and the lamp body 2, so that the lower end surfaces of the lampshade 1 and the lamp body 2 can be cleaned during the movement of the cleaning pad 20, thereby ensuring the cleanliness of the lower end surfaces of the lampshade 1 and the lamp body 2, and after the shadowless lamp is used for a period of time, the upper end surface of the cleaning pad 20 is covered with a large amount of dust or is worn, at this time, the cleaning pad 20 can be detached from the upper end of the protective plate 13 for replacement or cleaning, and during this process, the sub-magic tape 18 needs to be separated from the mother magic tape 19, so that the cleaning pad 20 can be detached from the upper end of the protective plate 13, and then the cleaning pad 20 can be replaced or cleaned, and through the arrangement of the sub-magic tape 18, the mother magic tape 19 and the cleaning pad 20, the convenience of cleaning the lower end surface of the shadowless lamp is effectively improved, and the practicability is improved.

[0038] The contents not described in detail in the specification belong to the prior art known to those skilled in the art.

[0039] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be made without departing from the spirit and scope of the present application, which is defined by the following claims and their equivalents.

Claims

1. Adjustable temperature general surgery clinical operation shadowless lamp, including lamp shade (1), lamp body (2), heat sink (3) and heat dissipation fan (4), the lower end of lamp shade (1) is fixedly installed with lamp body (2), and the upper end of lamp body (2) is fixedly installed with heat sink (3), and the upper end inside lamp shade (1) is fixedly installed with heat dissipation fan (4); characterized in that Two groups of air bags (5) are fixedly installed in the upper end inside lamp shade (1), and the lower end of air bag (5) is fixedly installed with motion ring (6), and the lower end of motion ring (6) is fixedly installed with traction rope (7), the inside of lamp shade (1) is provided with heat dissipation port (8), and heat dissipation plate (9) is rotatably installed in heat dissipation port (8), and the upper end inside heat dissipation plate (9) is nestedly installed with torsion spring (10); The outer side of the front and rear ends of lamp shade (1) is fixedly installed with vertical plate (11), the side of vertical plate (11) close to lamp shade (1) is provided with sliding groove (12), and the inside of sliding groove (12) is slidably installed with protective plate (13), and the lower end of protective plate (13) is fixedly installed with rotating part (14), the left side of vertical plate (11) is fixedly installed with driving motor (15), and driving motor (15) is located at the front end of lamp shade (1), and the output end of driving motor (15) is fixedly installed with output shaft (16), the outer side of output shaft (16) is sleeved with moving part (17), and moving part (17) is located in the inside of vertical plate (11).

2. The temperature-adjustable general surgery clinical operation shadowless lamp according to claim 1, characterized in that: The side of protective plate (13) close to lamp shade (1) is fixedly installed with sub magic tape (18), the side of sub magic tape (18) away from protective plate (13) is bonded with mother magic tape (19), and the side of mother magic tape (19) away from protective plate (13) is fixedly installed with cleaning pad (20).

3. The temperature-adjustable general surgery clinical operation shadowless lamp according to claim 1, characterized in that: The lamp body (2) is arranged at equal angles at the lower end of the lamp shade (1), and the lamp body (2) and the heat sink (3) are correspondingly arranged in the inside of the lamp body (2).

4. The temperature-adjustable general surgery clinical operation shadowless lamp according to claim 1, characterized in that: The air bags (5) are symmetrically arranged about the vertical central axis of the lamp shade (1), and the air bags (5) are respectively bonded to the inner surface of the lamp shade (1) and the upper surface of the motion ring (6).

5. The temperature-adjustable general surgery clinical operating shadowless lamp according to claim 1, characterized in that: The motion ring (6) and the heat dissipation plate (9) form a traction structure through the traction rope (7), and the traction rope (7) is arranged at equal angles about the motion ring (6) in four groups.

6. The temperature-adjustable general surgery clinical operation shadowless lamp according to claim 1, characterized in that: The heat dissipation plate (9) and the lamp shade (1) form an elastic structure through the torsion spring (10), and the heat dissipation plate (9), the torsion spring (10) and the heat dissipation port (8) are arranged at equal angles about the lamp shade (1) in four groups.

7. The temperature-adjustable general surgery clinical operation shadowless lamp according to claim 1, characterized in that: The protective plate (13) and the vertical plate (11) form a sliding structure through the sliding groove (12), and the protective plate (13) is in a semicircular structure, and the protective plate (13) is symmetrically arranged about the vertical central axis of the vertical plate (11) in two groups.

8. The temperature-adjustable general surgery clinical operation shadowless lamp according to claim 1, characterized in that: The rotating part (14) is in sliding connection with the moving part (17), the moving part (17) is in threaded connection with the output shaft (16), and the left and right ends of the output shaft (16) are oppositely threaded.

9. The temperature-adjustable general surgery clinical operating shadowless lamp according to claim 2, characterized in that: The sub magic tape (18) is in adhesive connection with the female magic tape (19), the cleaning pad (20) at the upper end of the female magic tape (19) is in close contact with the lower end face of the lamp body (2), and the sub magic tape (18), the female magic tape (19) and the cleaning pad (20) are correspondingly arranged at the upper end of the protective plate (13).

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