Digital media display device with cleaning and dustproof functions
By integrating rewinding, lifting, and cleaning devices, the problem of dust prevention and cleaning of digital media display devices during non-display periods is solved, achieving efficient storage and safe cleaning of flexible screens, extending the lifespan of the screens, and maintaining the aesthetics of the exhibition hall.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- NANJING UNIV OF INFORMATION SCI & TECH
- Filing Date
- 2025-12-29
- Publication Date
- 2026-04-14
AI Technical Summary
Existing digital media display devices are prone to dust accumulation during non-display periods in the daytime. Using dust covers affects the aesthetics, and the cleaning of flexible screens is difficult to control, which can easily damage the screen.
By employing a winding device, a lifting device, and a cleaning device, combined with a drive mechanism, the flexible screen can be spirally stored and cleaned multiple times. A liquid storage device provides cleaning fluid, and a cleaning sponge is used to achieve uniform cleaning.
It effectively prevents dust from adhering, extends screen life, ensures cleaning effectiveness, avoids screen damage, and maintains the aesthetics and display effect of the exhibition hall.
Smart Images
Figure CN121862007A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of digital media display technology, and more specifically to a digital media display device with cleaning and dustproof functions. Background Technology
[0002] Digital media display installations refer to exhibition halls that use multimedia and digital technologies as display techniques, employing the latest film and animation technologies, combined with unique graphic digital and multimedia technologies, to attract visitors with various innovative technologies and achieve human-computer interaction. Due to the integration of various high-tech technologies, the exhibition halls are highly meaningful and attractive. By combining and applying media such as video, sound, and animation, they deeply explore the background and meaning contained in the exhibits, bringing the audience a high-tech visual shock and greatly enhancing the brand value.
[0003] In actual operation of digital media display devices in exhibition halls, a significant challenge often arises: dust prevention and aesthetics. The core display screens of digital media display devices in exhibition halls are usually directly exposed to the environment. If dust covers are used to protect the screens during the daytime opening hours of the exhibition hall, it will seriously affect the overall aesthetics and display effect of the exhibition hall, which does not meet the requirements of a professional display environment. Therefore, the use of dust covers is usually limited to the night after the exhibition hall is closed. However, this operating mode results in the digital media display devices being exposed to the air for a long time during non-display periods during the day. A large amount of dust will adhere to the screen surface, which will significantly reduce its visual effect when it is officially displayed.
[0004] Although existing technologies use rollable screens to retract the display screen when the digital media display device is not in use, the flexible nature of rollable screens makes it difficult to effectively remove stubborn stains or dust adhering to the flexible screen surface if the cleaning force is too light; if the cleaning force is slightly too strong, it is very easy to cause scratches, dents, or even permanent damage to the screen due to improper force or the flexible structure of the screen itself. Currently, the common method for cleaning flexible screens involves placing the cleaning component in the retraction inlet and cleaning it as the flexible screen retracts. To achieve a thorough cleaning, significant pressure is required. Because the contact area between the cleaning component and the display screen is small, this high pressure can damage the screen. Furthermore, if the screen is not completely cleaned during recycling, a secondary cleaning is impossible, resulting in limited cleaning effectiveness.
[0005] Although existing technologies utilize rollable screens to retract the display screen when the digital media display device is not in use, the flexible nature of these screens presents challenges. If the cleaning force is too light, stubborn stains or dust adhering to the flexible screen surface cannot be effectively removed; conversely, if the cleaning force is too strong, scratches, dents, or even permanent damage can easily occur due to improper application of force or the screen's flexible structure. Therefore, this application proposes a digital media display device with cleaning and dust-proof functions to address these technical problems. Summary of the Invention
[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a digital media display device with cleaning and dustproof functions; to achieve the above objective / to solve the above technical problems, this invention is implemented using the following technical solution: A digital media display device with cleaning and dustproof functions includes: A winding device is installed inside a storage box, and the winding device is equipped with a rotating storage sleeve for winding up the flexible screen; A lifting device is installed in the storage box, and the top of the flexible screen is connected to the top of the lifting device; A cleaning device, which is fitted onto the rotary storage sleeve; A drive mechanism is provided to move the cleaning device to clean the flexible screen that is rolled up on the rotating storage sleeve.
[0007] Optionally, a liquid storage device is fitted onto one end of the rotary storage sleeve. The liquid storage device includes an electric push rod, a squeezing rotary plate, and a rotary liquid storage sleeve. The output end of the electric push rod is connected to the squeezing rotary plate, which is used to squeeze out the cleaning liquid from the rotary liquid storage sleeve.
[0008] Optionally, the rotary liquid storage sleeve has multiple liquid outlet holes on one side.
[0009] Optionally, the winding device includes a winding motor and a winding shaft. The winding motor is located on one side of the storage box, and its output end is connected to the winding shaft. The other end of the winding shaft is rotatably connected to the other side of the storage box. The elastic rope at the bottom of the flexible screen is connected to the winding shaft.
[0010] Optionally, the cleaning device includes a first rotary mounting plate and a second rotary mounting plate. The first rotary mounting plate is located at one end of the storage box near the electric push rod, and the second rotary mounting plate is located at one end of the storage box near the winding device. The inner side of the second rotary mounting plate is provided with a cleaning sponge, and the outer side is provided with a connecting block and a sliding bushing that is limited and connected to the guide roller inside the storage box. The inner side of the second rotary mounting plate is provided with a dry sponge, and the outer side is provided with a connecting block and a sliding bushing that is limited and connected to the guide roller inside the storage box.
[0011] Optionally, the drive mechanism includes a mounting sleeve, a first pulley, a first motor, a second motor, a second pulley, a pulley sleeve, a third pulley, a first traction rope, and a second traction rope; The mounting sleeve is fixed to the storage box. The first pulley and the second pulley are located inside the mounting sleeve. The first motor is located above the mounting sleeve, and its output shaft is connected to the first pulley. The second motor is located below the mounting sleeve, and its output shaft is connected to the second pulley. The pulley sleeves are located on both sides of the storage box. The third pulleys are located inside the pulley sleeves respectively. The first traction rope is connected in sequence to the first pulley, the third pulley and the connecting block of the first rotating mounting plate. The second traction rope is connected in sequence to the second pulley, the third pulley and the connecting block of the second rotating mounting plate.
[0012] Optionally, the lifting device includes a support plate and a fixed plate. The support plate is fixed inside the storage box. The support plate is provided with an active mechanism, and the fixed plate is provided with a driven mechanism. The active mechanism is provided with a power mechanism and a lower linkage rod. The driven mechanism is provided with an upper linkage rod hinged to the lower linkage rod. The power mechanism drives the active mechanism to drive the driven mechanism through the lower linkage rod and the upper linkage rod, thereby raising and lowering the fixed plate.
[0013] Optionally, the active mechanism includes a sliding plate, which is connected to the support plate via a sliding block. The sliding plate has lower racks at both ends, which mesh with lower gears. The lower linkage rod is connected to two lower gears respectively. The power mechanism is used to drive the sliding plate to move.
[0014] Optionally, the driven mechanism includes an upper sliding plate, which is connected to a fixed plate via an upper slider. The upper sliding plate has upper racks at both ends, which mesh with upper gears. The upper linkage rods are respectively connected to the upper gears.
[0015] Optionally, the power mechanism includes a hydraulic rod connected to the lower slider.
[0016] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: 1. Significantly Extends Service Life While Achieving Efficient Cleaning: After shrinking, the flexible screen does not completely wrap tightly around the shrink roller, but rather shrinks in a spiral shape. Different layers of the flexible screen do not contact each other, resulting in a smaller bending radius and significantly extending its service life. Furthermore, the gaps between the flexible screens at this point allow for a larger contact area between the cleaning components and the flexible surface, ensuring thorough cleaning. Once the flexible screen is fully shrunk and at rest, repeated scrubbing can achieve a complete cleaning.
[0017] 2. Efficient storage and dust prevention: Effectively solves the problems of dust accumulation on screens during non-display periods in traditional digital media display devices, and the impact of dust covers on aesthetics and display effects. The flexible screen can be rolled up and stored when not in use to prevent a large amount of dust from accumulating. During exhibition hall operation, there is no need to rely on dust covers, ensuring the overall aesthetics. When a display is needed, the flexible screen can be quickly driven to rise to meet normal display requirements.
[0018] 3. Safe and efficient cleaning: It solves the technical pain points of existing rollable screen cleaning, such as difficulty in controlling the force, which can easily lead to screen damage or incomplete cleaning. On the one hand, it allows the cleaning sponge to contact the rolled-up flexible screen with a uniform and appropriate force, avoiding damage such as scratches and indentations caused by improper force. On the other hand, the cleaning fluid in the rotating liquid reservoir can flow out and be absorbed by the cleaning sponge, improving the cleaning ability. At the same time, the sequential action of the dry and wet cleaning sponges not only enhances the cleaning effect, but also absorbs excess cleaning fluid on the screen surface, further ensuring the usability of the flexible screen after cleaning. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure in an embodiment of the present invention; Figure 2 This is a schematic diagram of a half-section assembly in an embodiment of the present invention; Figure 3 This is a schematic diagram of the storage box in an embodiment of the present invention. Figure 4 This is a schematic diagram of the cleaning component assembly structure in an embodiment of the present invention. Figure 5 This is a schematic diagram of the movement of the cleaning component in an embodiment of the present invention. A schematic diagram of the overall three-dimensional structure of the winding motor and winding shaft; Figure 6 This is a schematic diagram of the half-section structure of the mounting sleeve in an embodiment of the present invention. Schematic diagram of the overall three-dimensional structure of the rotating mounting plate and cleaning sponge; Figure 7 This is a schematic diagram of the rotary mounting plate in an embodiment of the present invention. Figure 8 This is a schematic diagram of the overall three-dimensional structure of the pulley and traction rope in an embodiment of the present invention; Figure 9 This is a schematic diagram of the pulley assembly structure in an embodiment of the present invention. Figure 10 This is a schematic diagram of the flexible display screen structure in an embodiment of the present invention. Figure 11 This is a schematic diagram of the overall three-dimensional structure of the rotating storage sleeve in an embodiment of the present invention; Figure 12 This is a schematic diagram of the overall three-dimensional structure of the extrusion rotary plate and the rotary liquid storage sleeve in an embodiment of the present invention; Figure 13 This is a front-view three-dimensional structural diagram of the supporting plate and fixing plate in an embodiment of the present invention; Figure 14 This is a rear three-dimensional structural diagram of the supporting plate and fixing plate in an embodiment of the present invention; In the diagram, 1-storage box, 2-rotating storage sleeve; 3-winding motor, 4-rotating mounting plate, 5-mounting sleeve, 6-electric push rod, 7-bearing plate, 8-flexible screen, 9-first motor, 10-first pulley, 11-second motor, 12-second pulley, 13-pulley sleeve, 14-third pulley, 15-first traction rope, 16-second traction rope, 17-elastic rope, 18-second rotating mounting plate; 101-Guide roller; 102-Take-up shaft mounting hole; 103-Push rod clearance hole; 104-Screen unfolding opening; 201 - Limiting groove, located on the inner side of the rotary storage sleeve 2; 202 - Rewinding shaft placement cavity; 203 - Flexible screen storage area; 204 - Wet sponge storage area; 205 - Dry sponge storage area; 301 - Reel; 401-Sliding bushing, 402-Cleaning sponge, 403-Connecting block; 404-Rotation clearance plate; 601 - Extrusion rotary plate, 602 - Rotary liquid storage sleeve; 701-Sliding plate, 702-Lower rack, 703-Lower gear, 704-Lower linkage rod, 705-Upper linkage rod, 706-Upper gear, 707-Fixed plate, 708-Upper sliding plate, 709-Upper rack, 7010-Sliding hole, 7011-Upper slider, 7012-Hydraulic rod, 7013-Lower slider; 801 - First fixing block; 802 - Second fixing block; 1001 - First rope groove; 1002 - Second rope groove; 1201 - Third rope groove; 1202 - Fourth rope groove. Detailed Implementation
[0020] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.
[0021] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are used only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.
[0022] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0023] like Figures 1-11 As shown, this invention discloses a digital media display device with cleaning and dustproof functions, comprising: A winding device is provided inside the storage box 1, and the winding device is equipped with a rotating storage sleeve 2 for winding up the flexible screen 8; A lifting device is installed in the storage box 1, and the top of the flexible screen 8 is connected to the top of the lifting device; A cleaning device, which is fitted onto the rotary storage sleeve 2; A drive mechanism is used to move the cleaning device to clean the flexible screen that is wound up on the rotary storage sleeve 2.
[0024] like Figure 3 As shown, the storage box 1 is equipped with a guide roller 101 inside, a winding shaft mounting hole 102 for the winding motor 3, a push rod clearance hole 103 for installing an electric push rod 6, and a screen unfolding opening 104 for unfolding the flexible screen 8 on the top of the storage box 1.
[0025] like Figure 8 As shown, a liquid storage device is fitted at one end of the rotary storage sleeve 2. The liquid storage device includes an electric push rod 6, a squeezing rotary plate 601, and a rotary liquid storage sleeve 602. The output end of the electric push rod 6 is connected to the squeezing rotary plate 601. The squeezing rotary plate 601 is used to squeeze out the cleaning liquid in the rotary liquid storage sleeve 602. Multiple liquid outlet holes are opened on one side of the rotary liquid storage sleeve 602. By squeezing the rotary storage sleeve 602 with the squeezing rotary plate 601, the cleaning liquid inside is squeezed out from the liquid outlet holes and absorbed by the cleaning sponge 402 near the liquid outlet holes.
[0026] like Figure 6 As shown, the rotary storage sleeve 2 has a limiting groove 201, which is opened on the inner side of the rotary storage sleeve 2; 202 is the winding shaft placement cavity, 203 is the flexible screen storage area, 204 is the wet sponge storage area, and 205 is the dry sponge storage area.
[0027] like Figure 5 As shown, the winding device includes a winding motor 3 and a winding shaft 301. The winding motor 301 is located on one side of the storage box 1, and its output end is connected to the winding shaft 301. The other end of the winding shaft 301 is rotatably connected to the other side of the storage box. The elastic rope 17 at the bottom of the flexible screen 8 is connected to the winding shaft 301.
[0028] like Figure 7 As shown, the drive mechanism includes a mounting sleeve 5, a first pulley 10, a first motor 9, a second motor 11, a second pulley 12, a pulley sleeve 13, a third pulley 14, a first traction rope 15, and a second traction rope 16; there are two third pulleys 14, which are symmetrically and rotatably located inside the pulley sleeve 13. The mounting sleeve is fixed to the storage box. The first pulley 10 and the second pulley 12 are located inside the mounting sleeve 5. The first motor 9 is located above the mounting sleeve 5, and its output shaft is connected to the first pulley 10. The second motor 11 is located below the mounting sleeve 5, and its output shaft is connected to the second pulley 12. The pulley sleeve 13 is located on both sides of the storage box 1. The third pulley 14 is located inside the pulley sleeve 13. The first traction rope 15 is connected in sequence to the first pulley 10, the third pulley and the connecting block 403 of the first rotating mounting plate 4. The second traction rope is connected in sequence to the second pulley 12, the third pulley and the connecting block of the second rotating mounting plate 18.
[0029] like Figure 6As shown, the cleaning device includes a first rotating mounting plate 4 and a second rotating mounting plate 18. The first rotating mounting plate 4 is located at one end of the storage box 1 near the electric push rod 6, and the second rotating mounting plate is located at one end of the storage box 1 near the winding device. The inner side of the second rotating mounting plate 18 is provided with a cleaning sponge 402, and the outer side is provided with a connecting block 403 and a sliding bushing 401 that is limited and connected to the guide roller in the storage box. The inner side of the second rotating mounting plate 18 is provided with a dry sponge, and the outer side is provided with a connecting block and a sliding bushing that is limited and connected to the guide roller in the storage box. The rotating blank plate 404 is not provided with a sponge, so that the flexible screen will not be cleaned by this arrangement.
[0030] like Figures 9-10 As shown, the lifting device includes a support plate 7 and a fixed plate 707. The support plate 7 is fixed inside the storage box 1. The support plate 7 is provided with an active mechanism, and the fixed plate is provided with a driven mechanism. The active mechanism is provided with a power mechanism. The active mechanism is provided with a lower linkage rod 704, and the driven mechanism is provided with an upper linkage rod 705 hinged to the lower linkage rod. The power mechanism drives the active mechanism to drive the driven mechanism through the lower linkage rod 704 and the upper linkage rod 705, so that the fixed plate 707 is raised and lowered.
[0031] The active mechanism includes a sliding plate 701, which is connected to the support plate 7 via a sliding block 7013. The sliding plate 701 has lower racks 702 at both ends, each meshing with a lower gear. A lower linkage rod 704 is connected to two lower gears 703. The power mechanism drives the sliding plate to move. The driven mechanism includes an upper sliding plate 708, which is connected to the fixed plate 707 via an upper sliding block 7011. The upper sliding plate 708 has upper racks 709 at both ends, each meshing with an upper gear 706. An upper linkage rod 705 is connected to the upper gear 706. The power mechanism includes a hydraulic rod 7012, which is connected to the sliding block 7013.
[0032] It should be noted that the fixed plate 707 has a sliding hole 7010 for the upper slider 7011 to slide; the upper gear and the lower gear are both fixed to the bearing plate 7 and the fixed plate 707 by pins.
[0033] The lower rack 702 has one rack at the bottom and the other rack at the bottom, so that when the sliding plate 701 moves to the left or right, the two gears can move inward or outward at the same time. The upper rack 709 is the same.
[0034] Working principle: The digital media display device uses a rewinding shaft 301 to wind and coil an elastic rope 17 fixed to a second fixing block 802 at the bottom of the flexible screen 8, thereby storing the display screen 8 into a rotating storage sleeve 2. Since the display screen 8 tends to expand outwards after being wound up, it fits snugly against the inner surface of the rotating storage sleeve 2. Simultaneously, a first fixing block 801 at the top of the flexible screen is mounted on a fixing plate 707, a second rotating mounting plate 18 is located in the wet sponge storage area 204, and a rotating mounting plate 4 is located in the dry sponge storage area 205. A limiting block 803 mounted on the second fixing block 802 at the bottom of the flexible screen 8 is located within a limiting groove 201 to prevent the flexible screen 8 from swaying left and right during movement. The second fixing block 802 is located at the lower end of the flexible screen 8, and the limiting block 803 is located inside the limiting groove 201. In this way, under the action of the limiting block 803 and the limiting groove 201, the flexible screen 8 can be guided when it is stored or unfolded.
[0035] When a flexible screen is needed, the winding motor 3 drives the winding shaft 301 to rotate, and the hydraulic rod 7012 drives the sliding plate 701 to move on the support plate 7 via the slider 7011 on the sliding plate 701. When the sliding plate 701 moves, it will simultaneously drive the two lower racks 702 on both sides to move. Since the two lower racks 702 are respectively meshed with the two lower gears 703 on the support plate 7, when the lower racks 702 move, they will drive the two lower gears 702 and the lower linkage rod 704 on the lower gears 702 to rotate in opposite directions. The upper end of the lower linkage rod 704 is hinged to the lower end of the upper linkage rod 705. When the two lower linkage rods 704 rotate, they will drive the two upper linkage rods 705 to rotate as well. The two upper linkage rods 705 are respectively engaged with the two upper gears 706 on the upper sliding plate 708 via the two upper gears 706. This allows the upper gears 709 to be limited, so that when the sliding plate 701 moves, the fixed plate 707 moves upward. At the same time, the winding shaft 301 rotates in the opposite direction, releasing the elastic rope 17 fixed on the second fixed block 802 at the bottom of the flexible screen 8, thereby raising the flexible screen. The above operation is reversed to retract the flexible screen. This allows the flexible screen to be retracted when the digital media display device is not in use during the exhibition hall's operation, thus preventing a large amount of dust from accumulating on the flexible screen. At the same time, this does not affect the overall aesthetics and display effect of the exhibition hall. When the digital media display device is needed, the flexible screen can be raised.
[0036] When dust accumulates on the flexible screen of the digital media display device, and the flexible screen is in a rolled-up state, the rotating liquid storage sleeve 602 stores cleaning fluid. The end of the rotating liquid storage sleeve 602 near the cleaning sponge 402 has several liquid outlet holes (not shown in the figure). However, the cleaning fluid in the rotating liquid storage sleeve 602 needs a certain pressure to flow out from the liquid outlet holes. When the electric push rod 6 moves the squeezing rotating plate 601 that is attached to the inner side of the rotating liquid storage sleeve 602, the squeezing rotating plate 601 will apply pressure to the cleaning fluid in the liquid storage sleeve 602, so that the cleaning fluid can flow out from the liquid outlet holes. This allows the cleaning sponge on the second rotating mounting plate 18 to absorb the cleaning fluid, thereby improving the cleaning effect of the cleaning sponge 402 on the flexible screen.
[0037] Then, the first motor 9 is started. The output end of the first motor 9 is connected to the first pulley 10. The first pulley 10 is provided with a first rope groove 1001 and a second rope groove 1002. When the first pulley 10 rotates, the first traction rope 15 in the first rope groove 1001 is wound around, while the first traction rope 15 in the second rope groove 1002 is released, thereby causing the first traction rope 15 to be pulled. This causes the first traction rope 15 to drive the first rotary mounting plate 4 to move, thereby cleaning the screen.
[0038] Furthermore, the first rotating mounting plate 4 is slidably limited on the guide roller 101 by the sliding bushing 401, which ensures the stability of the first rotating mounting plate 4 during movement. Since the cleaning sponge 402 set on the outer side of the first rotating mounting plate 4 is in contact with the flexible screen rolled up in the rotating storage sleeve 2, the first rotating mounting plate 4 can drive the cleaning sponge 402 to clean the flexible screen. At the same time, it can clean the flexible screen with uniform and appropriate force, thereby ensuring the cleaning effect of the flexible screen and also ensuring that the flexible screen is not damaged during the cleaning process.
[0039] When the first rotating mounting plate 4 reciprocates and returns to the initial wet sponge storage area 204, the second motor 11 drives the connected second pulley 12, which in turn drives the second traction rope 16 to pull the rotating mounting plate 18, which is equipped with dry sponges, to absorb the residual cleaning liquid on the flexible screen 8. After reciprocating, it returns to the initial dry sponge storage area 205. The second pulley 12 has the same structure as the first pulley 10, and is provided with a third rope groove 1201 and a fourth rope groove 1202 for placing the second traction rope 16.
[0040] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.
Claims
1. A digital media display device with cleaning and dustproof functions, characterized in that, include: A winding device is installed inside a storage box, and the winding device is equipped with a rotating storage sleeve for winding up the flexible screen; A lifting device is installed in the storage box, and the top of the flexible screen is connected to the top of the lifting device; A cleaning device, which is fitted onto the rotary storage sleeve; A drive mechanism is provided to move the cleaning device to clean the flexible screen that is rolled up on the rotating storage sleeve.
2. The digital media display device with cleaning and dustproof function according to claim 1, characterized in that, One end of the rotary storage sleeve is fitted with a liquid storage device, which includes an electric push rod, a squeezing rotary plate, and a rotary liquid storage sleeve. The output end of the electric push rod is connected to the squeezing rotary plate, which is used to squeeze out the cleaning liquid in the rotary liquid storage sleeve.
3. The digital media display device with cleaning and dustproof function according to claim 2, characterized in that, The rotary liquid storage sleeve has multiple liquid outlet holes on one side.
4. The digital media display device with cleaning and dustproof function according to claim 1, characterized in that, The winding device includes a winding motor and a winding shaft. The winding motor is located on one side of the storage box, and its output end is connected to the winding shaft. The other end of the winding shaft is rotatably connected to the other side of the storage box. The elastic rope at the bottom of the flexible screen is connected to the winding shaft.
5. The digital media display device with cleaning and dustproof function according to claim 1, characterized in that, The cleaning device includes a first rotary mounting plate and a second rotary mounting plate. The first rotary mounting plate is located at one end of the storage box near the electric push rod, and the second rotary mounting plate is located at one end of the storage box near the winding device. The inner side of the second rotary mounting plate is provided with a cleaning sponge, and the outer side is provided with a connecting block and a sliding bushing that is limited and connected to the guide roller inside the storage box. The inner side of the second rotary mounting plate is provided with a dry sponge, and the outer side is provided with a connecting block and a sliding bushing that is limited and connected to the guide roller inside the storage box.
6. The digital media display device with cleaning and dustproof function according to claim 5, characterized in that, The drive mechanism includes a mounting sleeve, a first pulley, a first motor, a second motor, a second pulley, a pulley sleeve, a third pulley, a first traction rope, and a second traction rope; The mounting sleeve is fixed to the storage box. The first pulley and the second pulley are located inside the mounting sleeve. The first motor is located above the mounting sleeve, and its output shaft is connected to the first pulley. The second motor is located below the mounting sleeve, and its output shaft is connected to the second pulley. The pulley sleeves are located on both sides of the storage box. The third pulleys are located inside the pulley sleeves respectively. The first traction rope is connected in sequence to the first pulley, the third pulley and the connecting block of the first rotating mounting plate. The second traction rope is connected in sequence to the second pulley, the third pulley and the connecting block of the second rotating mounting plate.
7. The digital media display device with cleaning and dustproof function according to claim 1, characterized in that, The lifting device includes a support plate and a fixed plate. The support plate is fixed inside the storage box. The support plate is provided with an active mechanism, and the fixed plate is provided with a driven mechanism. The active mechanism is provided with a power mechanism and a lower linkage rod. The driven mechanism is provided with an upper linkage rod hinged to the lower linkage rod. The power mechanism drives the active mechanism to drive the driven mechanism through the lower linkage rod and the upper linkage rod, thereby raising and lowering the fixed plate.
8. The digital media display device with cleaning and dustproof function according to claim 7, characterized in that, The active mechanism includes a sliding plate, which is connected to the support plate via a sliding block. The sliding plate has lower racks at both ends, which mesh with lower gears. The lower linkage rod is connected to two lower gears respectively. The power mechanism is used to drive the sliding plate to move.
9. The digital media display device with cleaning and dustproof function according to claim 8, characterized in that, The driven mechanism includes an upper sliding plate, which is connected to a fixed plate via an upper slider. The upper sliding plate has upper racks at both ends, which mesh with upper gears. The upper linkage rods are respectively connected to the upper gears.
10. The digital media display device with cleaning and dustproof function according to claim 7, characterized in that, The power mechanism includes a hydraulic rod, which is connected to the lower slider.