Antistatic liquid crystal display screen

Abstract

The present invention discloses an anti-static liquid crystal display screen, which relates to the technical field of liquid crystal display screens, including a screen and a frame, and also includes: a frame plate detachably mounted on the top and bottom of the frame, and a sliding bar capable of reciprocating movement is mounted between the two frame plates; a cleaning roller and an impregnating roller mounted on the sliding bar, and the cleaning roller is used to clean the plane of the screen, and the impregnating roller is used to roll a cleaning agent on the plane of the screen; a switching component, which switches the cleaning roller or the impregnating roller to contact the plane of the screen; and a transmission component, which drives the cleaning roller to rotate intermittently when the cleaning roller contacts the screen. The present invention can separate impurities from the screen before they are deposited into larger impurity blocks through the intermittent rotation of the cleaning roller, thereby avoiding scratches or even damage to the anti-static coating on the surface of the display screen caused by the impurity blocks during the wiping process, thereby avoiding affecting the anti-static effect of the coating on the screen surface.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid crystal display screens, and in particular to an anti-static liquid crystal display screen. Background Art

[0002] Liquid crystal display (LCD) is a thin, flat display device composed of a certain number of color or black and white pixels, placed in front of a light source or reflector. Due to the working principle and structural characteristics of LCD screens, they are prone to generate static electricity during use, thereby adsorbing dust or floating impurities in the air onto the display screen, affecting the viewing experience of the display screen.

[0003] At present, in order to carry out anti-static treatment on the display screen, a grounding system, hardware protection and anti-static coating are generally used on the display screen to eliminate the effect of static electricity on the display screen. At the same time, the display screen is also regularly dusted and cleaned to improve the viewing effect of the display screen.

[0004] For example, Chinese patent publication number CN116259249B discloses an anti-static liquid crystal display screen, which cleans the dust on the surface of the liquid crystal display screen and releases the dust by electrostatic adsorption through the movement of a cleaning chamber and an electrostatic adsorption rod, and quickly transports and collects the cleaned dust through a bidirectional spiral push rod, effectively improving the electrostatic treatment and dust cleaning effects of the liquid crystal display screen;

[0005] Another example is Chinese patent publication number CN211878924U, which discloses an electronic display screen with a static electricity removal structure, in which a cleaning cloth bonded to the outer wall of a movable rod cleans the outer wall of a main body back and forth, thereby removing dust from the outer wall of the main body.

[0006] The above disclosed solutions all clean the dust and other impurities on the surface of the display screen by wiping. However, during the wiping process, the cleaned dust and other impurities will accumulate on the cleaning structure (i.e., the cleaning cloth or the cleaning chamber) to form larger impurity blocks. If the wiping continues, the formed impurity blocks may scratch or even damage the antistatic coating on the surface of the display screen, thereby affecting the antistatic effect of the coating on the screen surface. Summary of the invention

[0007] The object of the present invention is to provide an anti-static liquid crystal display screen to solve at least one technical problem existing in the above-mentioned prior art.

[0008] To achieve the above object, the present invention provides the following technical solution: an anti-static liquid crystal display screen, comprising a screen and a frame, and further comprising:

[0009] Frame plates are detachably mounted on the top and bottom of the frame, and a sliding bar capable of reciprocating movement is mounted between the two frame plates;

[0010] A cleaning roller and a soaking roller mounted on the sliding bar, wherein the cleaning roller is used to clean the plane of the screen, and the soaking roller is used to roll-coat a cleaning agent on the plane of the screen;

[0011] Switching components to switch the cleaning roller or the soaking roller to contact the plane of the screen surface;

[0012] The transmission assembly drives the cleaning roller to rotate intermittently when the cleaning roller contacts the screen surface, thereby changing the contact surface between the cleaning roller and the screen surface and separating the deposited impurities from the screen surface.

[0013] Preferably, fixed plates are fixed on the top and bottom of the sliding bar, and a swing rod is rotatably installed on the outer wall of the fixed plate. The two ends of the two swing rods are respectively and jointly rotatably installed with a first vertical axis and a second vertical axis. The cleaning roller is fixed on the outer wall of the first vertical axis, and the wetting roller is fixed on the outer wall of the second vertical axis. The switching assembly is used to drive the swing rod to rotate so that the cleaning roller or the wetting roller contacts the screen plane.

[0014] Preferably, the switching assembly comprises a sliding cavity opened inside the sliding bar, a sliding block is slidably installed in the sliding cavity, a spring is connected between the sliding block and the inner wall of the sliding cavity, and a connecting rod is rotatably connected between the sliding block and one end of the swing rod;

[0015] The switching assembly also includes a fan-shaped plate rotatably mounted on a fixed plate near the outer wall of the swing rod, two protruding rods are fixed to the outer wall of the fan-shaped plate, and the two protruding rods are respectively located on both sides of the connecting rod, and a servo motor for driving the fan-shaped plate to reciprocate is also installed on the top of the fixed plate.

[0016] Preferably, the transmission assembly includes a transmission gear coaxially fixed with the first vertical shaft, an intermediate gear and a rotating disk are coaxially mounted at the connection between the fixed plate and the swinging rod, and the intermediate gear is meshed with the transmission gear, a fixed disk is coaxially fixed to the outer wall of the second vertical shaft, a notched disk and a shifting rod are fixed to the outer wall of the fixed disk, and the shifting rod is located at the notch of the notched disk, a plurality of shifting grooves are annularly distributed on the outer wall of the rotating disk, and the outer wall of the rotating disk between adjacent shifting grooves is set as an arc groove, and the radius of the arc groove is the same as the radius of the notched disk;

[0017] The transmission assembly also includes a driving member for driving the second vertical shaft to rotate.

[0018] Preferably, the driving member comprises a driving gear coaxially fixed with the second vertical axis, the outer wall of the frame plate is provided with two oppositely arranged racks, and the driving gear is located between the two racks and can mesh with one of the racks.

[0019] Preferably, a dust suction chamber is opened inside the sliding bar, and a dust suction port connected to the dust suction chamber is opened on the outer wall of the sliding bar facing the cleaning roller. The outer wall of the sliding bar is connected to an external pipe, and the external pipe connects the dust suction chamber with an external exhaust structure. A filter is also installed on the inner wall of the dust suction chamber.

[0020] Preferably, when the cleaning roller contacts the screen surface, the dust suction port faces the outer wall of the cleaning roller, and the inlet of the dust suction port is configured to be conical.

[0021] Preferably, the outer wall of the frame plate is provided with a long groove for the servo motor to move.

[0022] Preferably, the outer ring of the cleaning roller is coated with a layer of elastically deformable flexible material.

[0023] Preferably, the outer walls of the top and bottom of the frame are provided with card slots, and the outer wall of the frame plate is provided with corresponding card strips.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The present invention can separate impurities from the screen surface before they accumulate into larger impurity blocks through the intermittent rotation of the cleaning roller, thereby preventing the impurities from scratching or even damaging the antistatic coating on the surface of the display screen during the wiping process, thereby preventing the antistatic effect of the coating on the screen surface from being affected. In addition, due to the prior rolling of the detergent, the friction between the impurity blocks and the screen surface during the wiping process can also be reduced, further reducing the impact on the antistatic coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a state diagram of the display screen of the present invention when no frame plate is installed;

[0027] Figure 2 A state diagram and a partial enlarged diagram of the display screen of the present invention after the frame plate is installed;

[0028] Figure 3 It is a partial enlarged view of the fixing plate and the structure thereon of the present invention;

[0029] Figure 4 It is a partial side view of the present invention;

[0030] Figure 5 The explosion structure of the transmission assembly of the present invention Figure 1 ;

[0031] Figure 6 The explosion structure of the transmission assembly of the present invention Figure 2 ;

[0032] Figure 7 A partial cross-sectional view of the sliding bar of the present invention;

[0033] Figure 8 For the present invention Figure 7 The state diagram of the cleaning roller when it contacts the screen surface under the viewing angle;

[0034] Fig. 9 It is a partial cross-sectional view of the dust suction chamber of the present invention;

[0035] Fig.10 The figure is a simplified structural diagram of the cleaning roller during the cleaning process of the present invention.

[0036] In the figure: 1. screen; 2. frame; 3. frame plate; 4. sliding bar; 5. cleaning roller; 6. wetting roller; 7. first vertical axis; 8. second vertical axis; 9. fixed plate; 10. swing rod; 11. connecting rod; 12. transmission gear; 13. intermediate gear; 14. rotating disk; 15. driving gear; 16. fixed disk; 17. notched disk; 18. lever; 19. lever groove; 20. arc groove; 21. slider; 22. spring; 23. sliding chamber; 24. fan-shaped plate; 25. convex rod; 26. dust suction chamber; 27. filter screen; 28. dust suction port; 29. ​​external pipe; 30. rack. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Embodiment 1;

[0039] See also Figures 1 to 10 The present invention provides a technical solution: an anti-static liquid crystal display screen, comprising a screen 1 and a frame 2, and further comprising:

[0040] Frame plates 3 are detachably mounted on the top and bottom of the frame 2, and a reciprocating sliding bar 4 is mounted between the two frame plates 3;

[0041] A cleaning roller 5 and an impregnation roller 6 are mounted on the sliding bar 4, wherein the cleaning roller 5 is used to clean the plane of the screen surface 1, and the impregnation roller 6 is used to roll-coat a cleaning agent on the plane of the screen surface 1;

[0042] A switching component is used to switch the cleaning roller 5 or the wetting roller 6 to contact the plane of the screen surface 1;

[0043] The transmission assembly drives the cleaning roller 5 to rotate intermittently when the cleaning roller 5 contacts the screen surface 1 , thereby changing the contact surface between the cleaning roller 5 and the screen surface 1 and separating the deposited impurities from the screen surface 1 .

[0044] At present, in addition to adding antistatic coating on the surface of the display screen, the antistatic treatment of the LCD screen can also add TVS ESD devices to the electrostatic contact ports of the display screen, using their antistatic properties to form an electrostatic discharge circuit to enhance protection.

[0045] When the LCD screen is in normal use, it can be selected whether to install the two frame plates 3 on the top and bottom of the frame 2 for a long time according to the actual situation, respectively. Figure 1 and Figure 2 As shown, the purpose is to reduce the impact on the viewing effect. It is preferred that the external structure is installed on the frame 2 when the screen 1 needs to be cleaned;

[0046] During the cleaning process, the wetting roller 6 needs to be soaked with the cleaning agent first, and then the sliding bar 4 is driven by the external structure to slide back and forth between the frame plates 3. Specifically, the driving method of the electric slider can be adopted. In the sliding process of the outward stroke, the switching component makes the wetting roller 6 contact the screen surface 1 first, and the cleaning agent is rolled on the screen surface 1 as the sliding bar 4 moves. On the one hand, the rolling method can prevent the impurities adhering to the outside of the screen surface 1 from moving, and on the other hand, it is also convenient for the subsequent cleaning of the cleaning roller 5.

[0047] During the return process, the switching component makes the cleaning roller 5 contact with the screen 1. Under the action of the transmission component, the cleaning roller 5 will rotate intermittently. When the cleaning roller 5 stops rotating, the cleaning roller 5 will wipe the impurities on the screen 1 as the sliding bar 4 moves. Then, when the cleaning roller 5 rotates, the contact surface between the cleaning roller 5 and the screen 1 is switched, and the accumulated impurities are separated from the screen 1. For details, please refer to Fig.10 During the wiping process, impurities on the surface of the screen 1 will accumulate on the cleaning roller 5. Fig.10 In the schematic diagram at A in the middle, the accumulated impurities are separated from the screen surface 1 by the cleaning roller 5 during the rotation process to prevent the impurities from accumulating into larger impurity blocks;

[0048] In this way, through the intermittent rotation of the cleaning roller 5, the impurities can be separated from the screen 1 before they accumulate into larger impurity blocks, thereby avoiding scratches or even damage to the anti-static coating on the surface of the display screen by the impurity blocks during the wiping process, thereby avoiding affecting the anti-static effect of the screen surface coating. In addition, due to the prior rolling of the detergent, the friction between the impurity blocks and the screen 1 during the wiping process can also be reduced, further reducing the impact on the anti-static coating.

[0049] In one of the more preferred embodiments, a method for mounting the cleaning roller 5 and the soaking roller 6 is provided;

[0050] A fixed plate 9 is fixed to the top and bottom of the sliding bar 4, and a swing rod 10 is rotatably installed on the outer wall of the fixed plate 9. The two ends of the two swing rods 10 are respectively and jointly rotatably installed with a first vertical axis 7 and a second vertical axis 8. The cleaning roller 5 is fixed on the outer wall of the first vertical axis 7, and the wetting roller 6 is fixed on the outer wall of the second vertical axis 8. The switching component is used to drive the swing rod 10 to rotate so that the cleaning roller 5 or the wetting roller 6 contacts the plane of the screen 1.

[0051] like Figure 3 and 5 As shown, the switching assembly drives the swing rod 10 to rotate at the connection with the fixed plate 9 so that the cleaning roller 5 or the wetting roller 6 can switch the contact with the screen surface 1 plane to correspond to the reciprocating movement stroke of the above-mentioned sliding bar 4.

[0052] In one of the more preferred embodiments, the switching assembly includes a sliding cavity 23 opened inside the sliding bar 4, a slider 21 is slidably installed in the sliding cavity 23, and a spring 22 is connected between the slider 21 and the inner wall of the sliding cavity 23, and the slider 21 is rotatably connected to one end of the swing rod 10 by a connecting rod 11;

[0053] The switching assembly also includes a fan-shaped plate 24 rotatably mounted on the fixed plate 9 near the outer wall of the swing rod 10. Two protruding rods 25 are fixed to the outer wall of the fan-shaped plate 24, and the two protruding rods 25 are respectively located on both sides of the connecting rod 11. A servo motor for driving the fan-shaped plate 24 to reciprocate is also installed on the top of the fixed plate 9.

[0054] For details on switching components, see Figure 3 and Figure 5-7 Under the elastic force of the spring 22, the slider 21 moves out of the sliding cavity 23, and under the action of the connecting rod 11, the swing rod 10 remains in an inclined state, that is, Figure 7 or Figure 8 Status;

[0055] During the switching, the servo motor controls the rotation of the sector plate 24. During the rotation, the protruding rod 25 on the sector plate 24 contacts the connecting rod 11 and drives it to swing until the connecting rod 11 passes the limit state of being in the same straight line with the swing rod 10, and completes the subsequent rotation and state fixation under the elastic force of the spring 22. In this way, the swing rod 10 can be made to swing back and forth through the reciprocating swing of the sector plate 24. Figure 7 and Figure 8 The state is switched back and forth to achieve the purpose of switching the cleaning roller 5 or the soaking roller 6 to contact with the screen 1;

[0056] It is worth mentioning that due to the setting of the spring 22, the cleaning roller 5 or the wetting roller 6 can maintain stable contact with the screen surface 1, and can also provide a certain pressure to ensure the rolling effect of the wetting roller 6 and the cleaning effect of the cleaning roller 5.

[0057] In one of the more preferred embodiments, an implementation method for driving the cleaning roller 5 to rotate intermittently is provided;

[0058] The transmission assembly includes a transmission gear 12 coaxially fixed with the first vertical shaft 7, an intermediate gear 13 and a rotating disk 14 are coaxially mounted at the connection between the fixed plate 9 and the swinging rod 10, and the intermediate gear 13 is meshed with the transmission gear 12, a fixed disk 16 is coaxially fixed to the outer wall of the second vertical shaft 8, a notched disk 17 and a lever 18 are fixed to the outer wall of the fixed disk 16, and the lever 18 is located at the notch of the notched disk 17, a plurality of lever grooves 19 are annularly distributed on the outer wall of the rotating disk 14, and an arc groove 20 is set on the outer wall of the rotating disk 14 between adjacent lever grooves 19, and the radius of the arc groove 20 is the same as the radius of the notched disk 17;

[0059] The transmission assembly also includes a driving member for driving the second vertical shaft 8 to rotate.

[0060] For details on the transmission components, please refer to Figure 5-6 During the reciprocating movement of the sliding bar 4, the second vertical shaft 8 is driven to rotate by the driving member, so that the wetting roller 6 rolls the surface of the screen 1 during the contact with the screen 1;

[0061] Then, when the cleaning roller 5 contacts the screen surface 1, the second vertical shaft 8 drives the fixed disk 16 and the notched disk 17 and the lever 18 thereon to rotate together during the rotation process. When the lever 18 is rotated into the lever groove 19, the rotating disk 14 is driven to rotate, and the first vertical shaft 7 and the cleaning roller 5 are driven to rotate under the meshing transmission of the intermediate gear 13 and the transmission gear 12, so as to achieve the effect of the cleaning roller 5 rotating during the movement, and the accumulated impurities are separated from the screen surface 1;

[0062] When the lever 18 is disengaged from the slot 19, the arc surface of the notched disk 17 will rotate into the arc groove 20 of the rotating disk 14 to achieve the rotation locking of the rotating disk 14. At this time, the cleaning roller 5 is also locked, and slides relative to the screen 1 under the movement of the sliding bar 4 to complete the wiping process. In this way, as the second vertical shaft 8 continues to rotate, the cleaning roller 5 can be switched back and forth in the process of rotation and stillness, so as to continuously switch the contact surface between the cleaning roller 5 and the screen 1, thereby separating the deposited impurities from the screen 1;

[0063] The rotation directions of the cleaning roller 5 and the soaking roller 6 can be seen in Figure 7-8 , Figure 7 The state of the outward journey is that the wetting roller 6 is in contact with the screen surface 1, and Figure 8 In the return state, the cleaning roller 5 is in contact with the screen surface 1. Such a rotation direction can ensure that the accumulated impurities can be separated from the screen surface 1. Fig.10 shown.

[0064] It is worth mentioning that, during the return process, the cleaning roller 5 should first switch to contact with the plane of the frame 2, and then contact with the screen 1 during the movement, so as to avoid impurities between the cleaning roller 5 and the screen 1 to the greatest extent, and the impurities are accumulated at the front end of the cleaning roller 5 on the screen 1 as much as possible, that is, Fig.10 As shown at A in the middle, this can prevent the impurities pressed under the cleaning roller 5 from causing wear to the screen surface 1 during the wiping process.

[0065] In one of the more preferred embodiments, an implementation of a driving member is provided;

[0066] The driving member includes a driving gear 15 fixed coaxially with the second vertical shaft 8 . The outer wall of the frame plate 3 is provided with two oppositely arranged racks 30 . The driving gear 15 is located between the two racks 30 and can mesh with one of the racks 30 .

[0067] For details on the drive components, please refer to Figure 2 and Figure 7-8 During the rotation and switching of the swing rod 10, the driving gear 15 will mesh with the racks 30 on both sides respectively, so that when the sliding bar 4 moves, the driving gear 15 will move and rotate along the racks 30, and the setting of the two racks 30 can ensure that the driving gear 15 rotates in the same direction during the outward and return processes, so that when the cleaning roller 5 rotates, the accumulated impurities can be separated from the screen 1.

[0068] Embodiment 2 In order to prevent the impurities separated from the screen surface 1 from coming into contact with the screen surface 1 again, a method for cleaning the impurities on the cleaning roller 5 is provided;

[0069] A dust suction chamber 26 is opened inside the sliding bar 4, and a dust suction port 28 connected to the dust suction chamber 26 is opened on the outer wall of the sliding bar 4 facing the cleaning roller 5. The outer wall of the sliding bar 4 is connected to an external pipe 29, and the external pipe 29 connects the dust suction chamber 26 with the external exhaust structure. A filter screen 27 is also installed on the inner wall of the dust suction chamber 26.

[0070] When the cleaning roller 5 contacts the screen 1 , the dust suction port 28 faces the outer wall of the cleaning roller 5 , and the inlet of the dust suction port 28 is configured to be conical.

[0071] For details, please refer to Fig. 9 When the cleaning roller 5 is behind the screen surface 1, the cleaning roller 5 rotates to separate the deposited impurities from the screen surface 1, and the deposited impurities will rotate to the dust suction port 28. Under the suction effect of the external suction structure, negative pressure will be generated in the dust suction chamber 26, and the impurities on the cleaning roller 5 will be sucked into the dust suction chamber 26 under the action of the airflow, and filtered through the filter 27, so as to achieve the purpose of cleaning the impurities on the cleaning roller 5. Among them, the suction structure can be realized by a suction pump or the like;

[0072] It is worth noting that the conical opening of the dust suction port 28 can facilitate the collection of impurities. At the same time, the dust suction port 28 should be arranged as close to the cleaning roller 5 as possible to improve the dust suction effect on impurities.

[0073] In one of the more preferred embodiments, the outer wall of the frame plate 3 is provided with a long groove for the servo motor to move.

[0074] In one of the more preferred embodiments, the outer ring of the cleaning roller 5 is coated with a layer of elastically deformable flexible material.

[0075] The outer ring of the cleaning roller 5 is covered with a flexible material, specifically a microfiber cloth or cotton wool, which can avoid hard wear and tear on the screen 1 on the one hand, and on the other hand, the flexible material will be squeezed and deformed during wiping, and after rotation, the deformed part will be restored. The restoration of the position can also help the impurities on the cleaning roller 5 to fall off, avoiding the impurities on the cleaning roller 5 from being too firmly adhered and unable to be separated under the action of airflow.

[0076] In one of the more preferred embodiments, the outer walls of the top and bottom of the frame 2 are both provided with card slots, and the outer wall of the frame plate 3 is provided with corresponding card strips.

[0077] The design of the card slot and the card strip can facilitate the disassembly and installation of the frame plate 3 on the frame 2. The choice of long-term installation or timed installation depends on the actual usage and scene.

[0078] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification and the drawings can also be directly processed according to the existing technical common sense. At the same time, the connection method of each component adopts the mature conventional means in the prior art, and the machinery, parts and equipment all adopt the conventional models in the prior art, so no specific description will be given here.

[0079] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti-static liquid crystal display screen, comprising a screen (1) and a frame (2), characterized in that: Also includes: Frame plates (3) are detachably mounted on the top and bottom of the frame (2), and a reciprocating sliding bar (4) is mounted between the two frame plates (3); A cleaning roller (5) and a wetting roller (6) mounted on the sliding bar (4), wherein the cleaning roller (5) is used to clean the plane of the screen surface (1), and the wetting roller (6) is used to roll-coat a cleaning agent on the plane of the screen surface (1); A switching component is used to switch the cleaning roller (5) or the wetting roller (6) to contact the plane of the screen surface (1); a transmission assembly, which drives the cleaning roller (5) to rotate intermittently when the cleaning roller (5) contacts the screen surface (1), thereby replacing the contact surface between the cleaning roller (5) and the screen surface (1) and separating the deposited impurities from the screen surface (1); The top and bottom of the sliding bar (4) are both fixed with a fixed plate (9), the outer wall of the fixed plate (9) is rotatably mounted with a swing rod (10), the two ends of the two swing rods (10) are respectively and jointly rotatably mounted with a first vertical shaft (7) and a second vertical shaft (8), the cleaning roller (5) is fixed to the outer wall of the first vertical shaft (7), the soaking roller (6) is fixed to the outer wall of the second vertical shaft (8), and the switching component is used to drive the swing rod (10) to rotate so that the cleaning roller (5) or the soaking roller (6) contacts the plane of the screen (1); The switching assembly comprises a sliding cavity (23) opened inside the sliding bar (4), a sliding block (21) is slidably mounted in the sliding cavity (23), a spring (22) is connected between the sliding block (21) and the inner wall of the sliding cavity (23), and a connecting rod (11) is rotatably connected to one end of the swing rod (10); The switching assembly further comprises a sector plate (24) rotatably mounted on the fixed plate (9) near the outer wall of the swing rod (10), two protruding rods (25) being fixed to the outer wall of the sector plate (24), and the two protruding rods (25) being respectively located on both sides of the connecting rod (11), and a servo motor for driving the sector plate (24) to reciprocate is also mounted on the top of the fixed plate (9); The transmission assembly comprises a transmission gear (12) coaxially fixed to the first vertical shaft (7); an intermediate gear (13) and a rotating disk (14) are coaxially rotatably mounted at the connection between the fixed plate (9) and the swing rod (10); the intermediate gear (13) is meshed with the transmission gear (12); a fixed disk (16) is coaxially fixed to the outer wall of the second vertical shaft (8); a notched disk (17) and a shifting rod (18) are fixed to the outer wall of the fixed disk (16); the shifting rod (18) is located at the notch of the notched disk (17); a plurality of shifting grooves (19) are annularly distributed on the outer wall of the rotating disk (14); the outer wall of the rotating disk (14) between adjacent shifting grooves (19) is configured as an arcuate groove (20); and the radius of the arcuate groove (20) is the same as the radius of the notched disk (17); The transmission assembly also includes a driving member for driving the second vertical shaft (8) to rotate; The driving member comprises a driving gear (15) fixed coaxially with the second vertical shaft (8); the outer wall of the frame plate (3) is provided with two racks (30) arranged opposite to each other; the driving gear (15) is located between the two racks (30) and can mesh with one of the racks (30).

2. The anti-static liquid crystal display screen according to claim 1, characterized in that: A dust suction chamber (26) is provided inside the sliding bar (4), and a dust suction port (28) communicating with the dust suction chamber (26) is provided on the outer wall of the sliding bar (4) facing the cleaning roller (5). An external pipe (29) is connected to the outer wall of the sliding bar (4), and the external pipe (29) connects the dust suction chamber (26) with an external air extraction structure. A filter screen (27) is also installed on the inner wall of the dust suction chamber (26).

3. The anti-static liquid crystal display screen according to claim 2, characterized in that: When the cleaning roller (5) is in contact with the screen surface (1), the dust suction port (28) faces the outer wall of the cleaning roller (5), and the inlet of the dust suction port (28) is configured to be conical.

4. The anti-static liquid crystal display screen according to claim 1, characterized in that: The outer wall of the frame plate (3) is provided with a long groove for the servo motor to move.

5. The antistatic liquid crystal display according to any one of claims 1 to 4, characterized in that: The outer ring of the cleaning roller (5) is coated with a layer of elastically deformable flexible material.

6. The antistatic liquid crystal display according to any one of claims 1 to 4, characterized in that: The outer walls of the top and bottom of the frame (2) are both provided with card slots, and the outer wall of the frame plate (3) is provided with corresponding card strips.

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