LED display screen with protective device

Abstract

The present invention discloses an LED display screen with a protective device, comprising a display screen body, legs are arranged on both sides of the display screen body, and a sliding trough body, the upper and lower ends of the display screen body are slidably provided with sliding trough bodies, a lateral moving component is arranged between the two sliding trough bodies and the display screen body, a partition plate is fixedly connected to the inner middle side of the sliding trough body, the partition plate divides the sliding trough body into two operating chambers, a partition plate is fixedly connected in the operating chamber, the partition plate divides the operating chamber into a slider moving chamber and a guide rope moving chamber, a sliding block is slidably arranged in the slider moving chamber, a traction rope is fixedly connected to one side of the sliding block, a through hole is opened on the partition plate, and the traction rope transmission is arranged in the slider moving chamber, the through hole and the guide rope moving chamber. The present invention solves the problem that the LED display screen in the prior art is prone to scratches and damage and damage inside the screen during transportation and use.

Description

Technical Field

[0001] The invention relates to the technical field of LED display screens, and in particular to an LED display screen with a protective device. Background Art

[0002] LED display is a display device that controls semiconductor light emitting diodes. The LED display is composed of tens of thousands to hundreds of thousands of semiconductor light emitting diode pixels arranged evenly. It uses different materials to manufacture LED pixels of different colors to display various information such as text, graphics, images, and video signals. The display area and overall volume of LED display screens in the prior art are inconsistent. There are fixed LED display screens for meetings, and there are also LED display screens for office and display. This type of LED display screen can usually be transported so that the LED display screen can be moved and placed at a designated location.

[0003] When storing and transporting the LED display screen during use, because the LED display screen is heavy and is designed to be thin and light, in order to ensure the stability of the large LED display screen during transportation, the LED display screen is usually placed flat for transportation. In order to prevent damage to the LED display screen during transportation, and one side of the LED display screen is relatively flat, the LED display screen is generally transported with the screen facing downward. However, during the semi-circular process of the LED display screen, it is necessary to strictly protect the LED display screen to prevent damage to the surface and interior of the LED display screen, which will affect the subsequent normal use of the LED display screen.

[0004] However, even if the LED display screen is placed on the table for transportation, the screen of the LED display screen is easily bumped against the table surface, causing damage to the screen of the LED display screen. In addition, during the use of the LED display screen, the corner areas of the screen surface are also more prone to bumps, resulting in large-scale damage to the screen and internal structure of the LED display screen. In response to the practical problems that arise during the transportation and use of the above-mentioned LED display screens, we have proposed an LED display screen with a protective device. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides an LED display screen with a protective device to solve the problem in the background art that the LED display screen is prone to scratches and damage and internal damage during transportation and use.

[0006] To achieve the above object, the present invention provides the following technical solution: an LED display screen with a protective device, comprising a display screen body, legs are arranged on both sides of the display screen body, and further comprising:

[0007] A sliding trough body, wherein the sliding trough bodies are slidably arranged at both upper and lower ends of the display screen body, a lateral moving component is arranged between the two sliding trough bodies and the display screen body, a partition plate is fixedly connected to the inner middle side of the sliding trough body, the partition plate divides the sliding trough body into two operating chambers, a partition plate is fixedly connected in the operating chamber, the partition plate divides the operating chamber into a slider moving chamber and a guide rope moving chamber, a sliding block is slidably arranged in the slider moving chamber, a traction rope is fixedly connected to one side of the sliding block, a through hole is opened on the partition plate, and the traction rope transmission is arranged in the slider moving chamber, the through hole and the guide rope moving chamber;

[0008] A rotating support plate, both ends of the two sliding trough bodies are fixedly connected with the rotating support plates, a rotating winding assembly is arranged between the two rotating support plates located on the same side, a protective layer is arranged on the rotating winding assembly, one side of the protective layer is fixedly connected between the two sliding blocks, and a rope winding assembly is also arranged on the rotating support plate located on the upper side, and the rope winding assembly and the rotating winding assembly are matched with each other in transmission.

[0009] In order to drive the two sliding troughs to move horizontally, further, the horizontal movement component includes a connecting frame, a sliding frame and a transmission screw. The connecting frame is fixedly connected between the two sliding troughs, the sliding frame is fixedly connected to the display screen body, the connecting frame is slidably connected to the sliding frame, the transmission screw is rotatably connected to the sliding frame, the connecting frame is threadedly connected to the transmission screw, and a rotating component is arranged between the transmission screw and the sliding frame.

[0010] In order to roll up the protective layer, the rotating winding assembly further includes a winding cylinder and a first driving motor, the upper and lower ends of the winding cylinder are rotatably connected to the rotating support plate through a rotating shaft seat, the protective layer is wound on the winding cylinder, the first driving motor is arranged on the rotating support plate located on the upper side, and the output end of the first driving motor is fixedly connected to the rotating shaft seat located on the upper side.

[0011] In order to improve the protective effect of the protective layer on the display screen, further, a plurality of semicircular protrusions are provided on both sides of the protective layer.

[0012] In order to control the traction rope to follow the movement of the sliding block and the protective layer, on the basis of the present scheme, the rope winding assembly includes a winding cylinder, a rotating seat and an installing groove body, the traction rope is wound on the winding cylinder, the bottom of the winding cylinder is fixedly connected with the rotating seat, the rotating support plate located on the upper side is fixedly connected with a support, the rotating seat is rotatably connected to the support, the installing groove body is fixedly connected to the rotating support plate located on the upper side, and a plurality of guide wheels are rotatably connected in the installing groove body, and the traction rope transmission is arranged between the plurality of guide wheels.

[0013] In order to synchronously drive the winding drum and the winding drum to rotate, on the basis of the above-mentioned scheme, it also includes a transmission gear. The output end of the first driving motor and the rotating seat are both provided with a transmission gear, and a transmission toothed belt is provided between the two transmission gears.

[0014] In order to control the moving path of the protective layer, on the basis of the present solution, further, it includes a guide roller, two guide rollers are rotatably connected between the two sides of the two sliding grooves, and the protective layer transmission is arranged between the two guide rollers.

[0015] In order to keep the protective layer taut when it is retracted, the present solution further includes a mounting plate, a spring damper and an elastic clamping member, wherein the mounting plates are fixedly connected to both sides of the display screen body, and a plurality of spring dampers are arranged on both sides of the mounting plate, wherein the spring damper is arranged at one end of the mounting plate close to the retracting cylinder, and the elastic clamping member is arranged on one side of the spring damper close to the retracting cylinder.

[0016] In order to protect the first drive motor and the winding drum, on the basis of the above-mentioned scheme, it further includes a protective cover, and the protective cover is fixedly connected to both sides of the sliding groove body located on the upper side, and the first drive motor and the winding drum are both located in the protective cover.

[0017] Compared with the prior art, the present invention provides an LED display screen with a protective device, which has the following beneficial effects:

[0018] 1. In the present invention, when the display screen body needs to be transported, in order to avoid the screen of the display screen body and the interior of the display screen body from being damaged when the screen of the display screen body is moved upside down, the sliding groove bodies located on the upper and lower sides of the display screen body are driven to move horizontally by the horizontal moving assembly, so that the sliding groove body drives the rotating support plate to move horizontally, and drives the rotating winding assembly and the protective layer to move to one side of the display screen body, and then the rotating winding assembly and the rope winding assembly are synchronously started together, so that the sliding block and the traction rope move together in the sliding groove body, driving the protective layer to be unwound between the two sliding groove bodies, so that the protective layers on both sides are The corresponding ends are aligned so that the protective layer protects the screen of the display screen. Then, when the display screen body is placed upside down and moved, the protective layer faces downward to protect the screen area of ​​the display screen body. In the actual use of the display screen body, if the display screen body is temporarily used, the protective layer can also be used to protect the more fragile screen part of the display screen body. When the display screen body is moved upside down, the retracted cylinder is in contact with the desktop, which can leave a certain distance between the display screen body and the desktop, thereby preventing the display screen body from being bumped when it is placed upside down.

[0019] 2. In the present invention, during the use of the display screen body, most of the protective layer has been rolled up onto the rolling cylinder. Because the outer diameter of the rolled-up protective layer is larger than the outer diameter of the thickest part of the rolling cylinder, when the display screen body is accidentally pushed down by others during use, the rolled-up protective layer will contact the ground, and a certain distance will be retained after the rolled-up protective layer contacts the ground to avoid damage to the display screen body. The rolled-up protective layer can also protect the sides of the display screen body, thereby fully protecting the protective layer.

[0020] 3. Therefore, when the LED display screen with a protective device needs to be moved, it can fully protect the display screen body to prevent damage to the screen area of ​​the display screen body and the interior of the display screen body. The display screen body can also be fully protected during the use and gaps of the display screen body. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the overall structure of this application;

[0022] Figure 2 It is a schematic diagram of the structure of a partial cross-section of this application;

[0023] Figure 3 For this application Figure 2 A schematic diagram of the local enlarged structure at point A in the middle;

[0024] Figure 4 For this application Figure 2 A schematic diagram of the local enlarged structure at B in the middle;

[0025] Figure 5 This is a schematic diagram of the structure of the present application from another perspective of partial section;

[0026] Figure 6 For this application Figure 5 A schematic diagram of the local enlarged structure at C in the middle;

[0027] Figure 7 This is a schematic diagram of the structure of the display screen body, legs and screen area in this application;

[0028] Figure 8 It is a schematic diagram of a partial cross-section of the structure of the rotating winding assembly, the rope winding assembly, the sliding trough body and the protective layer in the present application;

[0029] Fig. 9 It is a schematic diagram of a partial cross-section of the cooperation of the sliding trough, the partition plate, the partition plate, the sliding block moving chamber, the guide rope moving chamber and the sliding block in the present application;

[0030] Fig.10 It is a schematic diagram of a partial cross-section of the structure of the cooperation between the rotating support plate, the first drive motor and the lead rope winding assembly in the present application;

[0031] Fig.11 It is a schematic diagram of the planar structure of the winding cylinder, guide roller and protective layer in this application.

[0032] In the figure: 100, lateral movement assembly; 200, rotation and winding assembly; 300, lead rope winding assembly;

[0033] 1. Display screen body; 2. Support legs; 3. Sliding trough; 4. Partition plate; 5. Partition plate; 6. Slider moving chamber; 7. Lead rope moving chamber; 8. Sliding block; 9. Towing rope; 10. Rotating support plate; 11. Protective layer; 12. Connecting frame; 13. Sliding frame; 14. Transmission screw; 15. Winding cylinder; 16. Rotating shaft seat; 17. First driving motor; 18. Semicircular protrusion; 19. Winding cylinder; 20. Rotating seat; 21. Support; 22. Mounting trough; 23. Guide wheel; 24. Transmission gear; 25. Transmission toothed belt; 26. Guide roller; 27. Mounting plate; 28. Spring damper; 29. ​​Elastic clamp; 30. Protective cover; 31. Screen area; 32. Second driving motor; 33. Meshing gear. DETAILED DESCRIPTION

[0034] 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.

[0035] See also Figures 1 to 11 , an LED display screen with a protective device, comprising a display screen body 1, legs 2 are arranged on both sides of the display screen body 1, the display screen body 1 is a common LED display screen in the prior art, and is a prior art device well known to those skilled in the art, and a screen area 31 is arranged on one side of the display screen body 1;

[0036] It also includes a sliding groove body 3, the upper and lower ends of the display screen body 1 are slidably provided with sliding groove bodies 3, a lateral movement component 100 is provided between the two sliding groove bodies 3 and the display screen body 1, and the lateral movement component 100 includes a connecting frame 12, a sliding frame 13 and a transmission screw 14, a connecting frame 12 is fixedly connected between the two sliding groove bodies 3, the sliding frame 13 is fixedly connected to the display screen body 1, the connecting frame 12 is slidably connected to the sliding frame 13, the transmission screw 14 is rotatably connected to the sliding frame 13, the connecting frame 12 is threadedly connected to the transmission screw 14, a rotating component is provided between the transmission screw 14 and the sliding frame 13, and the rotating component includes a second drive motor 32, the second drive motor 32 is arranged in the sliding frame 13, and the output end of the second drive motor 32 and the transmission screw 14 are connected to each other. The movable screw 14 is provided with a meshing gear 33, and the two meshing gears 33 are meshed. When the positions of the two sliding grooves 3 need to be adjusted, the sliding groove 3, the rotating support plate 10, the winding cylinder 15 and other components are moved to the side of the display screen body 1 opposite to the screen area 31 to avoid affecting people's viewing of the content displayed on the screen area 31 from the side. The second driving motor 32 is started, and the transmission screw 14 is driven to rotate through the meshing relationship of the two meshing gears 33, so that the transmission screw 14 drives the connecting frame 12 to move horizontally in the sliding frame 13, thereby adjusting the position of the sliding groove 3 on the display screen body 1, and multiple slide rail seats are fixedly connected to the upper and lower ends of the display screen body 1, and the sliding groove 3 is slidably connected between the multiple slide rail seats, so that the movement of the sliding groove 3 remains sufficiently stable;

[0037] A partition plate 4 is fixedly connected to the middle side of the interior of the sliding trough 3, and the partition plate 4 divides the sliding trough 3 into two operating chambers. A partition plate 5 is fixedly connected to the operating chamber, and the partition plate 5 divides the operating chamber into a slider moving chamber 6 and a rope moving chamber 7. A sliding block 8 is slidably arranged in the slider moving chamber 6, and a traction rope 9 is fixedly connected to one side of the sliding block 8. A through hole is opened on the partition plate 5, and the traction rope 9 is arranged in the slider moving chamber 6, the through hole and the rope moving chamber 7. In order to realize the movement of the protective layer 11 in the sliding trough 3, the protective layer 11 is alternately unfolded and retracted. When the protective layer 11 needs to be unfolded, the sliding block 8 is pulled by the traction rope 9 to slide in the slider moving chamber 6, and the sliding block 8 cooperates with the winding cylinder 15 to unfold the protective layer 11 between the two sliding grooves 3. Finally, the corresponding ends of the two protective layers 11 on both sides are fitted together to protect the screen area 31. When the protective layer 11 needs to be reeled in, the protective layer 11 is reeled in by the reeling cylinder 15, and the traction rope 9 is unreeled by the reeling cylinder 19, so that the traction rope 9 moves in the slider moving chamber 6, the through-hole and the rope moving chamber 7, and the protective layer 11 is smoothly reeled onto the reeling cylinder 15.

[0038] Both ends of the two sliding trough bodies 3 are fixedly connected with a rotating support plate 10, and a rotating winding assembly 200 is arranged between the two rotating support plates 10 on the same side. The rotating winding assembly 200 is provided with a protective layer 11, and one side of the protective layer 11 is fixedly connected between the two sliding blocks 8. The rotating winding assembly 200 includes a winding cylinder 15 and a first driving motor 17. The upper and lower ends of the winding cylinder 15 are rotatably connected to the rotating support plate 10 through a rotating shaft seat 16. The protective layer 11 is wound on the winding cylinder 15, and the first driving motor 17 is arranged on the rotating support plate 1 on the upper side. 0, the output end of the first driving motor 17 is fixedly connected to the rotating shaft seat 16 located on the upper side, and also includes a guide roller 26. Two guide rollers 26 are rotatably connected between the two sides of the two sliding troughs 3. The protective layer 11 is transmission-set between the two guide rollers 26. When the protective layer 11 needs to be wound or unwound, the first driving motor 17 is started to drive the rotating shaft seat 16 located on the upper side to rotate, so that the rotating shaft seat 16 and the winding cylinder 15 rotate between the two rotating support plates 10, and the winding or unwinding operation of the protective layer 11 is completed, so that the protective layer 11 moves between the two guide rollers 26;

[0039] Multiple semicircular protrusions 18 are provided on both sides of the protective layer 11. The protective layer 11 is a protective component made of rubber material in the prior art. The protective layer 11 has high elasticity, and the protective layer 11 located in the area between the two sliding grooves 3 has strong tensioning force. The semicircular protrusions 18 are provided. If an external object contacts the protective layer 11, or the display screen body 1 tilts and makes the protective layer 11 contact the ground or other objects, the contact area of ​​the protective layer 11 and the display screen body 1 is reduced to avoid the contact area of ​​the external object and the protective layer 11 being directly transmitted to the screen area 31. When the protective layer 11 contacts the ground, the shape of the protective layer 11 with the semicircular protrusion 18 structure makes the protective layer 11 not easy to deform, so as to fully protect the screen area 31.

[0040] A rope winding assembly 300 is also provided on the rotating support plate 10 located on the upper side, and the rope winding assembly 300 cooperates with the rotating winding assembly 200 in transmission. The rope winding assembly 300 includes a winding cylinder 19, a rotating seat 20 and a mounting groove 22. The traction rope 9 is wound on the winding cylinder 19, and the bottom of the winding cylinder 19 is fixedly connected with the rotating seat 20. The rotating support plate 10 located on the upper side is fixedly connected with a support 21, and the rotating seat 20 is rotatably connected to the support 21. The mounting groove 22 is fixedly connected to the rotating support plate 10 located on the upper side, and a plurality of guide wheels 23 are rotatably connected in the mounting groove 22. The traction rope 9 is transmitted and arranged between the plurality of guide wheels 23. It also includes a transmission gear 24, an output end of the first drive motor 17 and the rotating seat 2 0 are both provided with a transmission gear 24, and a transmission toothed belt 25 is provided between the two transmission gears 24. When the first driving motor 17 drives the rotating shaft seat 16 to rotate, the transmission cooperation of the transmission gear 24 and the transmission toothed belt 25 drives the rotating seat 20 to rotate. During the rotation of the rotating seat 20, the winding cylinder 19 is driven to rotate together. When the winding cylinder 15 unwinds the protective layer 11, the winding cylinder 19 is driven to rewind the traction rope 9, so that the traction rope 9 cooperates with the sliding block 8 to complete the winding and unwinding operations of the protective layer 11. Because the height of the winding cylinder 19 is higher than the sliding groove body 3, in order to guide the moving path of the traction rope 9 when winding or unwinding, the traction rope 9 is transmitted between the multiple guide wheels 23 in the installation groove body 22.

[0041] The cam 28 also includes a mounting plate 27, a spring damper 28 and an elastic clamp 29. The mounting plates 27 are fixedly connected to both sides of the display screen body 1. A plurality of spring dampers 28 are arranged on both sides of the mounting plate 27. The spring damper 28 is arranged at one end of the mounting plate 27 close to the winding cylinder 15. An elastic clamp 29 is arranged on one side of the spring damper 28 close to the winding cylinder 15. Because after the protective layer 11 is wound up, in order to enable the protective layer 11 to protect the side area of ​​the display screen body 1 and the screen area 31 after the display screen body 1 is tilted, the outer diameter of the protective layer 11 after winding up is slightly larger than the outer diameters of the upper and lower sides of the winding cylinder 15. In order to prevent the protective layer 11 from becoming loose after winding up, when the protective layer 11 is wound up during the rotation of the winding cylinder 15, the elastic clamp 29 always keeps in contact with the corresponding area of ​​the protective layer 11 under the action of the spring damper 28, so as to ensure the tension of the protective layer 11 during the winding process.

[0042] It also includes a protective cover 30, and the protective covers 30 are fixedly connected on both sides of the sliding groove body 3 on the upper side. The first drive motor 17 and the winding drum 19 are both located in the protective cover 30. In order to protect the first drive motor 17 and the winding drum 19, the protective cover 30 is provided to protect the first drive motor 17 and the winding drum 19.

[0043] The working principle or use process of the LED display with protection device is as follows:

[0044] First, when the display screen body 1 is being carried, in order to spread the protective layer 11 in front of the screen area 31 of the display screen body 1, the second driving motor 32 is started, and the transmission screw 14 is driven to rotate through the meshing relationship of the two meshing gears 33, so that the transmission screw 14 drives the connecting frame 12 to move horizontally in the sliding frame 13, thereby adjusting the position of the sliding groove body 3 on the display screen body 1;

[0045] Then, the first driving motor 17 is started to drive the rotating shaft seat 16 on the upper side to rotate, so that the rotating shaft seat 16 and the winding cylinder 15 rotate between the two rotating support plates 10, so that the winding cylinder 15 unwinds the protective layer 11. When the first driving motor 17 drives the winding cylinder 15 to rotate, the transmission seat 20 is driven to rotate through the transmission cooperation of the transmission gear 24 and the transmission toothed belt 25. During the rotation of the rotating seat 20, the winding cylinder 19 is driven to rotate together. When the winding cylinder 15 unwinds the protective layer 11, the winding cylinder 19 is driven to rewind the traction rope 9, so that the traction rope 9 cooperates with the sliding block 8 to complete the winding and unwinding operations of the protective layer 11, and the protective layers 11 on both sides are unwound together, so that the corresponding ends of the two protective layers 11 are aligned together, so that the two protective layers 11 protect the screen area 31, and when the display screen body 1 is carried upside down, the position with a larger outer diameter of the winding cylinder 15 is in contact with the desktop or the ground, so that the display screen body 1 is sufficiently protected during the transportation process;

[0046] When the first drive motor 17 drives the winding cylinder 15 to rotate and reel in the protective layer 11, the winding cylinder 19 also rotates to unwind the traction rope 9, so that the traction rope 9 moves in the slider moving chamber 6, the through-hole and the rope moving chamber 7, and the protective layer 11 is smoothly wound onto the winding cylinder 15. When the protective layer 11 is wound up during the rotation of the winding cylinder 15, the elastic clamp 29 always keeps in contact with the corresponding area of ​​the protective layer 11 under the action of the spring damper 28, thereby ensuring the tension of the protective layer 11 during the winding process.

[0047] 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 LED display screen with a protective device, comprising a display screen body (1), characterized in that: Also includes: A sliding groove body (3), wherein the sliding groove bodies (3) are slidably arranged at both upper and lower ends of the display screen body (1), a lateral movement assembly (100) is arranged between the two sliding groove bodies (3) and the display screen body (1), the sliding groove body (3) is divided into two operating chambers, and the operating chamber is divided into a slider moving chamber (6) and a guide rope moving chamber (7), a sliding block (8) is slidably arranged in the slider moving chamber (6), a traction rope (9) is fixedly connected to one side of the sliding block (8), and the traction rope (9) is arranged in the slider moving chamber (6) and the guide rope moving chamber (7) for transmission; A rotating support plate (10), both ends of the two sliding trough bodies (3) are fixedly connected to the rotating support plates (10), a rotating winding assembly (200) is arranged between the two rotating support plates (10) located on the same side, a protective layer (11) is arranged on the rotating winding assembly (200), one side of the protective layer (11) is fixedly connected between the two sliding blocks (8), and a rope winding assembly (300) is also arranged on the rotating support plate (10) located on the upper side, and the rope winding assembly (300) is in transmission cooperation with the rotating winding assembly (200); The lateral movement assembly (100) comprises: A connecting frame (12), wherein the connecting frame (12) is fixedly connected between the two sliding trough bodies (3); A sliding frame (13), the sliding frame (13) being fixedly connected to the display screen body (1), and the connecting frame (12) penetrating and slidably connected to the sliding frame (13); a transmission screw (14), the transmission screw (14) being rotatably connected to the sliding frame (13), the connecting frame (12) being threadably connected to the transmission screw (14), and a rotation assembly being provided between the transmission screw (14) and the sliding frame (13); The rotating winding assembly (200) comprises: A reeling cylinder (15), wherein both upper and lower ends of the reeling cylinder (15) are rotatably connected to the rotating support plate (10) via a rotating shaft seat (16), and the protective layer (11) is reeled and arranged on the reeling cylinder (15); a first drive motor (17), the first drive motor (17) being arranged on the rotating support plate (10) located on the upper side, and an output end of the first drive motor (17) being fixedly connected to the rotating shaft seat (16) located on the upper side; A plurality of semicircular protrusions (18) are provided on both sides of the protective layer (11); The guide rope reeling assembly (300) comprises: A winding cylinder (19), the traction rope (9) being wound around the winding cylinder (19); A rotating seat (20), the bottom of the winding cylinder (19) is fixedly connected to the rotating seat (20), the rotating support plate (10) located on the upper side is fixedly connected to a support (21), and the rotating seat (20) is rotatably connected to the support (21); A mounting trough (22), the mounting trough (22) being fixedly connected to the rotating support plate (10) located on the upper side, a plurality of guide wheels (23) being rotatably connected in the mounting trough (22), and the traction rope (9) being arranged between the plurality of guide wheels (23); Also includes: A transmission gear (24), wherein the output end of the first drive motor (17) and the rotating seat (20) are both provided with a transmission gear (24), and a transmission toothed belt (25) is provided between the two transmission gears (24); A screen area (31) is provided on one side of the display screen body (1); The rotating assembly comprises a second driving motor (32), the second driving motor (32) is arranged in the sliding frame (13), and a meshing gear (33) is arranged on the output end of the second driving motor (32) and the transmission screw rod (14), and the two meshing gears (33) are meshed; First, when the display screen body (1) is being carried, in order to spread the protective layer (11) in front of the screen area (31) of the display screen body (1), the second drive motor (32) is started, and the transmission screw (14) is driven to rotate through the meshing relationship of the two meshing gears (33), so that the transmission screw (14) drives the connecting frame (12) to move horizontally in the sliding frame (13), thereby adjusting the position of the sliding groove body (3) on the display screen body (1); Then, the first drive motor (17) is started to drive the rotating shaft seat (16) located on the upper side to rotate, so that the rotating shaft seat (16) and the winding cylinder (15) rotate between the two rotating support plates (10), so that the winding cylinder (15) unwinds the protective layer (11). While the first drive motor (17) drives the winding cylinder (15) to rotate, the rotating seat (20) is driven to rotate through the transmission cooperation of the transmission gear (24) and the transmission toothed belt (25). During the rotation of the rotating seat (20), the winding cylinder (19) is driven to rotate together. (15) When the protective layer (11) is unrolled, the reeling cylinder (19) is driven to reel the traction rope (9), so that the traction rope (9) cooperates with the sliding block (8) to complete the reeling and unreeling operation of the protective layer (11), driving the protective layers (11) on both sides to be unrolled together, so that the corresponding ends of the two protective layers (11) are aligned together, so that the two protective layers (11) protect the screen area (31), and when the display screen body (1) is carried upside down, the display screen body (1) is sufficiently protected during the transportation process.

2. The LED display screen with a protective device according to claim 1, characterized in that: Also includes: Guide rollers (26), two guide rollers (26) are rotatably connected between the two sides of the two sliding trough bodies (3), and the protective layer (11) is transmission-disposed between the two guide rollers (26).

3. The LED display screen with a protective device according to claim 2, characterized in that: Also includes: A mounting plate (27), to which both sides of the display screen body (1) are fixedly connected; Spring dampers (28), a plurality of spring dampers (28) being arranged on both sides of the mounting plate (27), and the spring dampers (28) being arranged at one end of the mounting plate (27) close to the winding cylinder (15); An elastic clamping piece (29), wherein the elastic clamping piece (29) is provided on one side of the spring damper (28) close to the winding cylinder (15).

4. The LED display screen with a protective device according to claim 3, characterized in that: Also includes: A protective cover (30) is fixedly connected to both sides of the sliding groove body (3) located on the upper side, and the first drive motor (17) and the winding cylinder (19) are both located inside the protective cover (30).

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