An LED display screen capable of lifting and lowering

Abstract

The present invention relates to the technical field of display screens. More specifically, it is an LED display screen capable of lifting, including a base, a screen body, and a lifting seat. The lifting seat is movably arranged on the base. A plurality of universal wheels are provided on the base. The screen body is arranged on the lifting seat. The LED display screen further includes: a second threaded rod, which is movably arranged on the base and is in threaded cooperation with the lifting seat; a power element, which is arranged on the base and its output end is connected to the second threaded rod; and a dust cleaning system, which is arranged between the base and the screen body. When the lifting seat moves relative to the base, the dust cleaning system can be controlled to work and clean the dust on the surface of the screen body. This avoids a large amount of dust adhering to the surface of the screen body when the screen body is placed in the air for a long time, which affects the display clarity of the screen body. Moreover, the automation degree of the whole device is high, and there is no need for staff to manually clean the screen body regularly, reducing the input of labor force.

Description

Technical Field

[0001] The present invention relates to the technical field of display screens, and more specifically, to an LED display screen capable of lifting and lowering. Background Art

[0002] An LED display screen is an electronic display screen composed of an LED dot matrix. By turning on and off the red, green, and blue light-emitting diodes, the screen display content can be changed in real time, such as text, animation, pictures, and videos. The display control is carried out through a modular structure. Its main components include unit boards, power supplies, and control chips. Among them, the unit board is one of the core components of the LED display. The unit board is composed of an LED module, a driving chip, and a PCB circuit board.

[0003] Traditional LED display screens mostly include a screen body and a lifting bracket. By installing the screen body on the lifting bracket, the height of the screen body can be adjusted through the lifting bracket. However, the existing display screens still have the following defects:

[0004] The existing display screen has a simple structure. After being placed for a long time, a large amount of dust is likely to adhere to the screen body, which easily affects the clarity of the display screen. It is necessary for the staff to clean the display screen regularly, which is very inconvenient. Summary of the Invention

[0005] The purpose of the present invention is to provide an LED display screen capable of lifting and lowering to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] An LED display screen capable of lifting and lowering includes a base, a screen body, and a lifting seat. The lifting seat is movably arranged on the base. A plurality of universal wheels are provided on the base. The screen body is arranged on the lifting seat. The LED display screen further includes:

[0008] A second threaded rod, which is movably arranged on the base and is in threaded cooperation with the lifting seat;

[0009] A power element, which is arranged on the base and its output end is connected to the second threaded rod; and

[0010] A dust cleaning system, which is arranged between the base and the screen body. When the lifting seat moves relative to the base, the dust cleaning system can be controlled to work and clean the dust on the surface of the screen body.

[0011] A further technical solution of the present application: The dust cleaning system includes:

[0012] A dust cleaning execution module, which is arranged on the screen body and is used to execute the work of cleaning the dust on the surface of the screen body; and

[0013] The driving module is arranged on the base and connected to the dust cleaning execution module. When the lifting seat moves, the dust cleaning execution module can be controlled by the driving module to work.

[0014] A further technical solution of the present application: The dust cleaning execution module includes a sliding seat, a dust cleaning cylinder, a guiding seat and a dust cleaning cotton;

[0015] The number of the guiding seats is one group and they are symmetrically arranged on the screen body. The sliding seat is movably arranged on the guiding seat and connected to the base through a support tube. The dust cleaning cylinder is arranged between two adjacent sliding seats. An opening is provided on the dust cleaning cylinder. The dust cleaning cotton is movably arranged in the dust cleaning cylinder and is in sliding fit with the screen body. The dust cleaning cotton is connected to the driving module.

[0016] A further technical solution of the present application: The driving module includes a turntable, a driving box, a sliding plate, a third threaded rod, a screw sleeve and a rotating blade;

[0017] The turntable is movably arranged on the base and is in sliding fit with the lifting seat. The driving box is arranged on the base. A sliding plate is movably arranged in the driving box. The screw sleeve is arranged on the sliding plate. The third threaded rod is connected to the turntable and is in threaded fit with the screw sleeve. The rotating blade is movably arranged in a cavity formed in the sliding seat. An input hole and an output hole are provided on the cavity. The input hole is communicated with the driving box through a support tube.

[0018] A further technical solution of the present application: A transmission is provided on the driving box, and the transmission is connected between the third threaded rod and the turntable.

[0019] A further technical solution of the present application: An adjusting disk is movably arranged on the sliding seat. The adjusting disk is coaxially connected to the rotating blade. An inclined surface is formed on the adjusting disk. A group of removal brushes are symmetrically and movably arranged in the dust cleaning cylinder. The removal brushes are elastically connected to the dust cleaning cylinder. A ball is provided at one end of the removal brush, and the ball is in sliding fit with the inclined surface.

[0020] A further technical solution of the present application: A plurality of first threaded rods are movably arranged on the base and are in threaded fit with each other. Universal wheels are arranged at one ends of the first threaded rods. A damping seat is arranged between the base and the universal wheels. The damping seat is located on one side of the wheel body of the universal wheel and is connected to the base through an elastic member.

[0021] Adopting the technical solution provided by the embodiment of the present invention, compared with the prior art, the following beneficial effects are achieved:

[0022] In the embodiment of the present invention, by setting a driving module and a dust cleaning execution module, when adjusting the screen body to the working height through a stepper motor and a second threaded rod, the frictional resistance between the lifting seat and the turntable can be utilized to control the operation of the turntable and the dust cleaning execution module, thereby wiping the dust attached to the surface of the screen body, avoiding a large amount of dust attached to the surface of the screen body due to the screen body being placed in the air for a long time, which affects the display clarity of the screen body. Moreover, the degree of automation of the entire device is high, and there is no need for staff to manually clean the screen body regularly, reducing the input of labor. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 FIG. is a schematic structural diagram of an LED display screen that can be lifted in the embodiment of the present invention;

[0024] Figure 2 FIG. is a schematic structural diagram of the driving module in the LED display screen that can be lifted in the embodiment of the present invention;

[0025] Figure 3 FIG. is a schematic structural diagram of the dust cleaning execution module in the LED display screen that can be lifted in the embodiment of the present invention;

[0026] Figure 4 FIG. is a schematic enlarged structural diagram of part A in the LED display screen that can be lifted in the embodiment of the present invention;

[0027] Figure 5 FIG. is a schematic structural diagram of the removal brush and the ball in the LED display screen that can be lifted in the embodiment of the present invention.

[0028] Explanation of the reference numerals in the schematic diagram:

[0029] 1 - base, 2 - universal wheel, 3 - damping seat, 4 - first threaded rod, 5 - stepper motor, 6 - lifting seat, 7 - second threaded rod, 8 - turntable, 9 - support tube, 10 - screen body, 11 - guide seat, 12 - sliding seat, 13 - dust cleaning cylinder, 14 - drive box, 15 - transmission, 16 - sliding plate, 17 - third threaded rod, 18 - nut sleeve, 19 - dust cleaning cotton, 20 - removal brush, 21 - ball, 22 - rotating blade, 23 - input hole, 24 - output hole, 25 - spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention. The present invention will be further described below in conjunction with the embodiments.

[0031] Please refer to Figures 1-5 , in an embodiment of the present application, an LED display screen capable of lifting includes a base 1, a screen body 10, and a lifting seat 6. The lifting seat 6 is movably arranged on the base 1. A plurality of universal wheels 2 are arranged on the base 1. The screen body 10 is arranged on the lifting seat 6. The LED display screen further includes:

[0032] A second threaded rod 7, which is movably arranged on the base 1 and is in threaded cooperation with the lifting seat 6;

[0033] A power element, which is arranged on the base 1 and whose output end is connected to the second threaded rod 7; and

[0034] A dust cleaning system, which is arranged between the base 1 and the screen body 10. When the lifting seat 6 moves relative to the base 1, the dust cleaning system can be controlled to work and clean the dust on the surface of the screen body 10.

[0035] It should be particularly noted that the power element can be a stepper motor 5 or a servo motor. In this embodiment, the power element is preferably a stepper motor 5, and the stepper motor 5 is arranged on

[0036] Exemplarily in this embodiment, the dust cleaning system includes:

[0037] A dust cleaning execution module, which is arranged on the screen body 10 and is used to execute the work of cleaning the dust on the surface of the screen body 10; and

[0038] A driving module, which is arranged on the base 1 and is connected to the dust cleaning execution module. When the lifting seat 6 moves, the dust cleaning execution module can be controlled to work through the driving module.

[0039] In actual application, the entire LED display screen is moved to the working position by using the universal wheels 2, and by controlling the rotation of the stepper motor 5, the second threaded rod 7 is driven to rotate. Under the action of the threaded cooperation between the second threaded rod 7 and the lifting seat 6, the lifting seat 6 and the screen body 10 are driven to move upward in the direction as Figure 1 shown, so that the screen body 10 reaches the working height. During this process, the lifting seat 6 can drive the driving module to work, and when the driving module works, it drives the dust cleaning execution module to work synchronously, so as to realize the cleaning of the dust attached to the surface of the screen body 10, without manual handling by staff, and the degree of automation is high.

[0040] Please refer to Figures 1-4 , as another preferred embodiment of the present application, the dust cleaning execution module includes a sliding seat 12, a dust cleaning cylinder 13, a guiding seat 11, and a dust cleaning cotton 19;

[0041] The number of the guiding seats 11 is one group and they are symmetrically arranged on the screen body 10. The sliding seat 12 is movably arranged on the guiding seat 11 and is connected to the base 1 through the support tube 9. The dust cleaning cylinder 13 is arranged between two adjacent sliding seats 12. An opening is provided on the dust cleaning cylinder 13. The dust cleaning cotton 19 is movably arranged in the dust cleaning cylinder 13 and is in sliding fit with the screen body 10. The dust cleaning cotton 19 is connected to the driving module.

[0042] Exemplarily in this embodiment, the driving module includes a turntable 8, a driving box 14, a sliding plate 16, a third threaded rod 17, a threaded sleeve 18, and a rotating blade 22;

[0043] The turntable 8 is movably arranged on the base 1 and is in sliding fit with the lifting seat 6. The driving box 14 is arranged on the base 1. A sliding plate 16 is movably arranged in the driving box 14. The threaded sleeve 18 is arranged on the sliding plate 16. The third threaded rod 17 is connected to the turntable 8 and is in threaded fit with the threaded sleeve 18. The rotating blade 22 is movably arranged in a cavity formed in the sliding seat 12. An input hole 23 and an output hole 24 are provided on the cavity. The input hole 23 is communicated with the driving box 14 through the support tube 9.

[0044] It should be added that a transmission 15 is provided on the driving box 14, and the transmission 15 is connected between the third threaded rod 17 and the turntable 8.

[0045] It should be particularly noted that in this embodiment, it is not limited to the above structure to adjust the position of the sliding plate 16 in the driving box 14. A linear motor or an electric cylinder can also be used for direct driving instead, which will not be listed one by one here.

[0046] When the stepping motor 5 drives the second threaded rod 7 to rotate, so that the lifting seat 6 and the screen body 10 move upward relative to the base 1 in the Figure 1 shown direction, the turntable 8 can be driven to rotate under the frictional resistance between the turntable 8 and the lifting seat 6, so as to drive the third threaded rod 17 to rotate. Under the cooperation of the third threaded rod 17 and the threaded sleeve 18, the sliding plate 16 moves downward in the Figure 2 shown direction, so that the air in the driving box 14 is discharged into the cavity along the input hole 23, thereby driving the rotating blade 22 and the dust cleaning cotton 19 to rotate, so that the dust cleaning cotton 19 can rotate during the downward movement and wipe the dust on the screen body 10, avoiding a large amount of dust adhering to the surface of the screen body 10 after the screen body 10 is placed in the air for a long time, which affects the display clarity of the screen body 10. And the whole device has a high degree of automation, without the need for staff to manually clean the screen body 10 regularly, reducing the input of labor.

[0047] Please refer to Figure 1 、 Figure 3 、 Figure 4 and Figure 5, as another preferred embodiment of the present application, an adjustment disk is movably arranged on the sliding seat 12, the adjustment disk is coaxially connected with the rotating blade 22, an inclined surface is formed on the adjustment disk, a group of removal brushes 20 are symmetrically and movably arranged in the dust cleaning cylinder 13, the removal brushes 20 are elastically connected with the dust cleaning cylinder 13, a ball 21 is arranged at one end of the removal brush 20, and the ball 21 is in sliding fit with the inclined surface.

[0048] Exemplarily in this embodiment, a plurality of first threaded rods 4 are movably arranged on the base 1 and are in threaded fit therewith. The universal wheels 2 are arranged at one end of the first threaded rods 4. A damping seat 3 is arranged between the base 1 and the universal wheels 2. The damping seat 3 is located on one side of the wheel body of the universal wheels 2 and is connected with the base 1 through an elastic member.

[0049] It should be particularly noted that the elastic member can be a spring 25, a spring piece or an elastic steel plate structure. In this embodiment, the elastic member is preferably a spring 25. The spring 25 is connected between the damping seat 3 and the base 1. As for the specific model of the spring 25, the best choice can be made according to the actual situation, and no specific limitation is made here.

[0050] In actual application, when the rotating blade 22 rotates, it can drive the adjustment disk to rotate synchronously. The sliding fit between the inclined surface on the adjustment disk and the ball 21 can continuously adjust the position of the removal brush 20 in the dust cleaning cylinder 13. The removal brush 20 reciprocates and can clean the dust on the surface of the dust cleaning cotton 19, so that the dust is separated from the dust cleaning cotton 19, facilitating the subsequent dust cleaning work to proceed orderly. And when the whole device is moved to the working position by using the universal wheels 2, by rotating the first threaded rod 4, the universal wheels 2 can be driven to move upward relative to the base 1 in the direction as Figure 1 shown until the wheel body of the universal wheels 2 contacts the damping seat 3 and drives the spring 25 to be compressed. When the compression amount of the spring 25 reaches the set threshold value, the pressure between the damping seat 3 and the wheel body can fix the wheel body, avoiding the universal wheels 2 affecting the stability of the whole device when the whole device is working.

[0051] The working principle of the present application:

[0052] Use the universal wheels 2 to move the whole LED display screen to the working position. By rotating the first threaded rod 4, the universal wheels 2 can be driven to move upward relative to the base 1 in the direction as Figure 1 shown until the wheel body of the universal wheels 2 contacts the damping seat 3 and drives the spring 25 to be compressed. When the compression amount of the spring 25 reaches the set threshold value, the pressure between the damping seat 3 and the wheel body can fix the wheel body, avoiding the universal wheels 2 affecting the stability of the whole device when the whole device is working. And by controlling the rotation of the stepper motor 5, driving the second threaded rod 7 to rotate, under the action of the threaded fit between the second threaded rod 7 and the lifting seat 6, driving the lifting seat 6 and the screen body 10 as Figure 1Move upward in the indicated direction, so that the screen body 10 reaches the working height. During this process, under the frictional resistance between the turntable 8 and the lifting seat 6, the turntable 8 can be driven to rotate, thereby driving the third threaded rod 17 to rotate. Under the cooperation between the third threaded rod 17 and the screw sleeve 18, the slide plate 16 is driven to move downward in the direction as Figure 2 shown, so that the air in the drive box 14 is discharged into the cavity along the input hole 23, thereby driving the rotating blade 22 and the dust-cleaning cotton 19 to rotate, so that the dust-cleaning cotton 19 can rotate and wipe the dust on the screen body 10 during the downward movement. When the rotating blade 22 rotates, it can drive the position-adjusting disk to rotate synchronously. The sliding fit between the inclined surface on the position-adjusting disk and the ball 21 can continuously adjust the position of the removal brush 20 in the dust-cleaning cylinder 13. The removal brush 20 reciprocates and can clean the dust on the surface of the dust-cleaning cotton 19, so that the dust is separated from the dust-cleaning cotton 19, facilitating the subsequent orderly progress of the dust-cleaning work, avoiding a large amount of dust adhering to the surface of the screen body 10 when the screen body 10 is placed in the air for a long time, which affects the display clarity of the screen body 10, and the entire device has a high degree of automation, without the need for staff to manually clean the screen body 10 regularly, reducing the input of labor.

[0053] The present invention and its embodiments are schematically described above. This description is not restrictive. What is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if those of ordinary skill in the art are inspired by it and design similar structural modes and embodiments without creative work without departing from the purpose of the present invention, they shall fall within the protection scope of the present invention.

[0054] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An LED display screen capable of lifting, comprising a base, a screen body and a lifting seat. The lifting seat is movably arranged on the base. A plurality of universal wheels are provided on the base. The screen body is arranged on the lifting seat, and it is characterized in that, The LED display screen further includes: a second threaded rod, which is movably arranged on the base and is in threaded cooperation with the lifting seat; a power element, which is arranged on the base and whose output end is connected to the second threaded rod; and a dust cleaning system, which is arranged between the base and the screen body. When the lifting seat moves relative to the base, the dust cleaning system can be controlled to work and clean the dust on the surface of the screen body; The dust cleaning system includes: a dust cleaning execution module, which is arranged on the screen body and is used to execute the work of cleaning the dust on the surface of the screen body; and a driving module, which is arranged on the base and is connected to the dust cleaning execution module. When the lifting seat moves, the dust cleaning execution module can be controlled to work through the driving module; The dust cleaning execution module includes a sliding seat, a dust cleaning cylinder, a guiding seat and a dust cleaning cotton; The number of the guiding seats is one group and they are symmetrically arranged on the screen body. The sliding seat is movably arranged on the guiding seat and is connected to the base through a support pipe. The dust cleaning cylinder is arranged between two adjacent sliding seats. An opening is provided on the dust cleaning cylinder. The dust cleaning cotton is movably arranged in the dust cleaning cylinder and is in sliding cooperation with the screen body. The dust cleaning cotton is connected to the driving module; The driving module includes a turntable, a driving box, a sliding plate, a third threaded rod, a screw sleeve and a rotating blade; The turntable is movably arranged on the base and is in sliding cooperation with the lifting seat. The driving box is arranged on the base. A sliding plate is movably arranged in the driving box. The screw sleeve is arranged on the sliding plate. The third threaded rod is connected to the turntable and is in threaded cooperation with the screw sleeve. The rotating blade is movably arranged in a cavity formed in the sliding seat. An input hole and an output hole are provided on the cavity. The input hole is communicated with the driving box through a support pipe; A positioning disk is movably arranged on the sliding seat. The positioning disk is coaxially connected to the rotating blade. An inclined surface is formed on the positioning disk. A group of removal brushes are symmetrically and movably arranged in the dust cleaning cylinder. The removal brushes are elastically connected to the dust cleaning cylinder. A ball is provided at one end of the removal brush. The ball is in sliding cooperation with the inclined surface; 2. The liftable LED display according to claim 1, wherein, A transmission is provided on the driving box. The transmission is connected between the third threaded rod and the turntable; 3. The liftable LED display according to claim 1, wherein A plurality of first threaded rods are movably arranged on the base and are in threaded cooperation with each other. Universal wheels are arranged at one ends of the first threaded rods. A damping seat is arranged between the base and the universal wheels. The damping seat is located on one side of the wheel body of the universal wheel and is connected to the base through an elastic member.

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