Multi-module LED arc screen curve track opening and closing device

Abstract

A multi-module LED arc-shaped screen curve track opening and closing device relates to the technical field of performing equipment, and comprises a support assembly, a display screen assembly and a track assembly, the support assembly comprises a plurality of columns fixed on a base and a truss fixed on the columns and arranged in a cantilever manner, the display screen assembly is connected to the cantilever portion of the truss and comprises at least a first display screen, a second display screen and a third display screen from outside to inside, and the track assembly comprises a track mounting bracket and a second track located above the second display screen and a track mounting bracket and a third track located above the third display screen. In the present application, the multi-module LED arc-shaped screen which can be opened and closed increases and optimizes the available performance space, virtually reduces the occupied space, provides more space for performers and other equipment, effectively utilizes the space of the performance site, improves the performance effect and meets more performance requirements.

Description

Technical Field

[0001] This invention relates to the field of performing arts equipment technology, and in particular to a multi-module LED curved screen curve trajectory opening and closing device. Background Technology

[0002] As living standards continue to improve, audiences have higher and higher requirements for performance effects, and performance equipment plays an important role in performance effects. Among them, LED displays are common performance equipment.

[0003] Existing LED display screens are often fixed in structure and cannot be moved during performances, occupying a considerable amount of space. This effectively encroaches on the space available for performers and other equipment, making it difficult to utilize the performance venue effectively. For large LED curved screens, especially those with large angles, such as 180° curved screens or even 360° cylindrical screens, moving, installing, and debugging them is extremely difficult and cannot meet current performance needs. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a multi-module LED curved screen curve trajectory opening and closing device. The multi-module LED curved screen that can be opened, closed and moved increases and optimizes the available performance space, thereby reducing the space occupied and providing more space for performers and other equipment. This makes the space of the performance venue more effective, improves the performance effect, and meets more performance needs.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A multi-module LED curved screen curved trajectory opening and closing device includes a support assembly, a display screen assembly, and a track assembly. The support assembly includes a certain number of columns fixed to a base and a truss fixed to the columns and cantilevered.

[0006] The display screen assembly is connected to the cantilevered portion of the truss and includes at least a first display screen, a second display screen, and a third display screen from the outside in. Each of the three displays includes an LED screen truss and LED screens fixed to it. The first, second, and third displays are arc-shaped and radially equidistant. The top of the LED screen truss of the second and third displays has hanging parts near both ends. At each of the two hanging parts of the LED screen truss, a lower hanging wheel bracket and an upper hanging wheel bracket of different heights are fixed, with lower and upper hanging wheels respectively mounted on the lower and upper hanging wheel brackets. The three LED screens are arc-shaped and initially arranged radially equidistantly, meaning their arcs correspond to three circles. Correspondingly, the LED screen truss is also arc-shaped and radially equidistant, effectively reducing the spacing between the displays and improving space utilization.

[0007] The track assembly includes a track mounting frame fixed to the cantilevered part of the truss above the second display screen and a second track fixed thereon, and a track mounting frame fixed to the cantilevered part of the truss above the third display screen and a third track fixed thereon.

[0008] The system comprises two second tracks: a lower track A and an upper track B. The lower and upper wheels of the second display screen are movably mounted on the second tracks A and B, respectively. Track A includes a second arc-shaped segment A, with one end of which is a second transfer segment A that bends outwards in the opposite direction. Track B includes a second arc-shaped segment B, with one end of which is also a second transfer segment B that bends outwards in the opposite direction. Initially, the second display screen is located directly behind the first display screen. By manually pushing it, the second display screen moves along the second arc-shaped segment A and the second arc-shaped segment B in an arc along the concentric circle in the middle, reaching the second transfer segments A and B before leaving the concentric circle and finally reaching the concentric circle where the first display screen is located. The second display screen then joins the first display screen to form a larger display screen.

[0009] The system comprises two third tracks: a lower track A and an upper track B. The lower and upper wheels of the third display screen are movably mounted on tracks A and B, respectively. Track A includes a third arc segment A, with one end of which is a third transfer segment A that curves outwards in the opposite direction. Track B includes a third arc segment B, with one end of which is also a third transfer segment B that curves outwards in the opposite direction. Initially, the third display screen is located directly behind the first display screen. By manually pushing it, the third display screen moves along the third arc segments A and B in an arc along the inner concentric circles. After reaching the third transfer segments A and B, it leaves the inner concentric circles and continues to the concentric circle where the first display screen is located. The third display screen then joins the first display screen to form a larger display screen. Because the transfer span is greater, the third transfer segments A and B are longer than the second transfer segments A and B.

[0010] In the projection, the distance between the second transfer segment A and the second transfer segment B is the same as the distance between the two hanging parts of the LED screen truss of the second display screen, and the distance between the third transfer segment A and the third transfer segment B is the same as the distance between the two hanging parts of the LED screen truss of the third display screen. This allows the second and third display screens to smoothly move along their respective transfer segments to reach the concentric circle where the first display screen is located. The second and second transfer segments A and B, and the third transfer segments A and B are respectively located on both sides of the arc where the LED screen of the first display screen is located, and their ends intersect with the circle where this arc is located. This allows the second and third display screens to form a larger display screen with the first display screen when they stop at the ends of their respective transfer segments. It should be noted that the transfer segments of the second track and the third track can also be located on the same side of the arc where the LED screen of the first display screen is located. The difference is that the third track is longer, allowing the third display screen to move a greater distance, which can meet the needs of certain special venues.

[0011] Preferably, the LED screen truss suspension parts of the second and third displays are respectively equipped with planar thrust ball bearings at the connection points between the lower and upper hanging wheel brackets. The rotation of the planar thrust bearings in the plane can instantly adjust the direction of the LED screen relative to the track, increasing the utilization efficiency of the display's thrust. The display can achieve overall deflection or deflection around a suspension point, and through the guidance of the arc-shaped and transfer-section tracks, it can achieve displacement in both the circumferential and radial directions in space.

[0012] Preferably, the bottom of the LED screen truss of the second and third displays is provided with several casters, which serve to provide support and save on the thrust of movement.

[0013] Preferably, the bottom of the LED screen truss of the second and third displays is provided with one or two guide pillars, located directly below the suspension unit. A second guide groove, identical to the trajectory of the second track A and / or the second track B, is provided on the base below the second display. The guide pillar of the second display can move along the second guide groove. Similarly, a third guide groove, identical to the trajectory of the third track A and / or the third track B, is provided on the base below the third display. The guide pillar and guide groove work together to limit and guide movement, preventing the displays from tilting.

[0014] Preferably, the second track A, the second track B, the third track A, and the third track B have a C-shaped cross-section, divided into upper and lower parts. The upper part includes an upper semicircular segment opening downwards and an upper fixed segment extending vertically downwards on one side. The lower part includes a lower semicircular segment opening upwards and a lower fixed segment extending vertically upwards on one side. Holes are provided on the upper and lower fixed segments, which are then fixed to the track mounting bracket by screws.

[0015] Preferably, the bottom of the upper fixing section is provided with a certain number of positioning holes, and the top of the lower fixing section is provided with corresponding positioning bosses, which serve as positioning tools.

[0016] Preferably, the bottom of the second track A, the second track B, the third track A, and the third track B are provided with a certain number of reinforcing plates. Each reinforcing plate includes a horizontal section and upward-extending and downward-extending longitudinal sections at both ends. The downward-extending longitudinal sections are fixed to the track mounting frame and have ribs between them and the horizontal sections. The reinforcing plates provide support and limit the movement of the tracks, improving the stability of the track structure.

[0017] Preferably, a track mounting frame fixed to the cantilevered part of the truss and a first track fixed thereon are provided above the first display screen. The first track is one in number and is arc-shaped. Near both ends of the top of the LED screen truss of the first display screen, two hanging wheel brackets of the same height are fixed, each with a hanging wheel movably mounted on it within the first track. This allows the first display screen to move, enabling it to slide along the first track in an arc, suitable for application scenarios requiring the first display screen to be moved.

[0018] Preferably, the first track can also consist of two tracks, one above the other, each including an arc segment and a transfer segment. The difference lies in the initial position of the first display screen's wheels at the end of the transfer segment. During movement, the first display screen first moves along the transfer segment to the outermost circle (or the innermost), and then translates along the arc segment in an arc. The application scenario is that when the first, second, and third display screens are combined to form a larger display screen, moving the first display screen is equivalent to opening a passageway in the middle of the larger display screen, facilitating the entry and exit of performers and props.

[0019] Preferably, the bottom of the LED screen truss of the first display screen is provided with several omnidirectional wheels and one or two guide columns, and the base below the first display screen is provided with a first guide groove that is the same as the first track trajectory, and the guide column of the first display screen can move along the first guide groove.

[0020] Preferably, the LED screens of the first, second, and third displays are of the same size to facilitate mass production. The number of devices is 1 to 4. When there are multiple devices, the trusses can be assembled together, and the trusses can form a ring structure, and the corresponding LED screens can form a 360° cylindrical screen.

[0021] Preferably, the arc of the LED screen corresponds to 30°, and three LED screens can form a 90° arc screen.

[0022] Preferably, the track mounting frame is made of square tubing, with the number corresponding to the number of tracks. The two square tubing corresponding to the two tracks are fixed to the truss by bolts.

[0023] The advantages of this invention are: 1. The multi-module LED curved screen that can be opened and closed and moved increases and optimizes the available performance space, thereby reducing the space occupied and providing more space for performers and other equipment, so that the space of the performance venue can be effectively utilized, the performance effect can be improved, and more performance needs can be met. 2. The truss and track have a reasonable structure and good stability, making the LED screen movement reliable and flexible, and easy to install and debug; 3. Each component adopts a modular design, which can be freely combined and spliced. The components can be the same, such as using the same structure of the display screen and the same length of track, which facilitates mass production, saves production costs, and improves economic efficiency. 4. The angle range of the LED curved screen can be freely selected, and a cylindrical screen with a large angle or even 360° can be achieved, giving the audience a stunning and complete visual effect. Attached Figure Description

[0024] Figure 1 This is a cross-sectional schematic diagram of the present invention; Figure 2 This is a cross-sectional schematic diagram of the display screen assembly and the track assembly in this invention; Figure 3 for Figure 1 Sectional view along the AA direction Figure 1 (Initial position); Figure 4 for Figure 1 Sectional view along the AA direction Figure 2 (Position during the movement); Figure 5 for Figure 1 Sectional view along the AA direction Figure 3 (End position); Figure 6 This is a top view of the second and third display screens in this invention; Figure 7 This is a front view of the second and third display screens in this invention; Figure 8 This is a top view of the second track in this invention; Figure 9 This is a top view of the third track in this invention; Figure 10 This is a top view of the first track in this invention; Figure 11 This is a top view of the second guide groove in this invention; Figure 12 This is a top view of the third guide groove in this invention; Figure 13 This is an exploded cross-sectional view of the track in this invention; Figure 14 This is a cross-sectional view of the reinforcing support plate in this invention; Figure 15 For reference regarding the usage status of the present invention Figure 1 ; Figure 16 For reference regarding the usage status of the present invention Figure 2 .

[0025] Explanation of key component symbols in the diagram: Support components: 11. Columns; 12. Trusses; Display screen components: 21. First display screen; 22. Second display screen; 23. Third display screen; 24. LED screen truss; 24.1. Suspension unit; 25. LED screen; 26. Lower hanging wheel bracket; 27. Upper hanging wheel bracket; 28. Lower hanging wheel; 29. ​​Upper hanging wheel; 210. Flat thrust ball bearing; 211. Caster wheel; 212. Guide column; Track assemblies: 31. Track mounting bracket; 32. Second track A; 32.1. Second arc segment A; 32.2. Second transfer segment A; 33. Second track B; 33.1. Second arc segment B; 33.2. Second transfer segment B; 34. Third track A; 34.1. Third arc segment A; 34.2. Third transfer segment A; 35. Third track B; 35.1. Third arc segment B; 35.2. Third transfer segment B; 36. Upper semicircular segment; 37. Upper fixed segment; 37.1. Positioning hole; 38. Lower semicircular segment; 39. Lower fixed segment; 39.1. Positioning boss; 310. Reinforcing support plate; 310.1. Rib plate; 311. First track; 100. Base; 101. Second guide groove; 102. Third guide groove; 103. First guide groove. Detailed Implementation

[0026] To more clearly illustrate the present invention, the invention will be further described below with reference to the accompanying drawings.

[0027] Example 1: As Figure 1 As shown, a multi-module LED curved screen curve trajectory opening and closing device includes a support assembly, a display screen assembly and a track assembly. The support assembly includes a certain number of columns 11 fixed to the base 100 and a truss 12 fixed to the columns 11 and cantilevered.

[0028] Combination Figure 1-3 and Figure 6-7As shown, the display screen assembly is connected to the cantilevered portion of the truss 12 and includes at least a first display screen 21, a second display screen 22, and a third display screen 23 from the outside to the inside. The first display screen 21, the second display screen 22, and the third display screen 23 each include an LED screen truss 24 and an LED screen 25 fixed thereon. The first display screen 21, the second display screen 22, and the third display screen 23 are arc-shaped and arranged at equal intervals in the radial direction. The top of the LED screen truss 24 of the second display screen 22 and the third display screen 23 is provided with a hanging part 24.1 near both ends. The two hanging parts 24.1 of the LED screen truss 24 are respectively fixed with a lower hanging wheel bracket 26 and an upper hanging wheel bracket 27 of different heights. The lower hanging wheel bracket 26 and the upper hanging wheel bracket 27 are respectively provided with a lower hanging wheel 28 and an upper hanging wheel 29.

[0029] Combination Figure 1-2 As shown, the track assembly includes a track mounting frame 31 fixed to the cantilever of the truss 12 above the second display screen 22 and a second track fixed thereon, and a track mounting frame 31 fixed to the cantilever of the truss 12 above the third display screen 23 and a third track fixed thereon.

[0030] Combination Figure 1-5 and Figure 8 As shown, there are two second tracks, including a lower second track A32 and an upper second track B33. The lower hanging wheel 28 and upper hanging wheel 29 of the second display screen 22 are movably disposed in the second track A32 and the second track B33, respectively. The second track A32 includes a second arc segment A32.1, and one end of the second arc segment A32.1 is provided with a second transfer segment A32.2 that bends outward in the opposite direction. The second track B33 includes a second arc segment B33.1, and one end of the second arc segment B33.1 is provided with a second transfer segment B33.2 that bends outward in the opposite direction.

[0031] Combination Figure 1-5 and Figure 9 As shown, there are two third tracks, including a lower third track A34 and an upper third track B35. The lower hanging wheel 28 and upper hanging wheel 29 of the third display screen 23 are movably disposed in the third track A34 and the third track B35, respectively. The third track A34 includes a third arc segment A34.1, and one end of the third arc segment A34.1 is provided with a third transfer segment A34.2 that bends outward in the opposite direction. The third track B35 includes a third arc segment B35.1, and one end of the third arc segment B35.1 is provided with a third transfer segment B35.2 that bends outward in the opposite direction.

[0032] Combination Figure 3-6 and Figure 8-9As shown in the lower projection, the distance between the second transfer segment A32.2 and the second transfer segment B33.2 is the same as the distance between the two hanging parts 24.1 of the LED screen truss 24 of the second display screen 22. The distance between the third transfer segment A34.2 and the third transfer segment B35.2 is the same as the distance between the two hanging parts 24.1 of the LED screen truss 24 of the third display screen 23. The second transfer segment A32.2 and the second transfer segment B33.2, and the third transfer segment A34.2 and the third transfer segment B35.2 are respectively located on both sides of the arc where the LED screen 25 of the first display screen 21 is located, and their ends intersect with the circle where this arc is located.

[0033] Example 2: Figure 2 and Figure 7 As shown, based on Embodiment 1, the LED screen truss 24 hanging part 24.1 of the second display screen 22 and the third display screen 23 are respectively provided with planar thrust ball bearings 210 at the connection between the lower hanging wheel bracket 26 and the upper hanging wheel bracket 27.

[0034] Example 3: Figure 1 As shown, based on Embodiment 1 or Embodiment 2, the bottom of the LED screen truss 24 of the second display screen 22 and the third display screen 23 is provided with several universal wheels 211.

[0035] Example 4: Figure 1 and Figure 11-12 As shown, based on Embodiment 1, Embodiment 2, or Embodiment 3, one or two guide pillars 212 are provided at the bottom of the LED screen truss 24 of the second display screen 22 and the third display screen 23. The guide pillars 212 are located directly below the hanging part 24.1. A second guide groove 101 with the same trajectory as the second track A32 and / or the second track B33 is provided on the base 100 below the second display screen 22. The guide pillars 212 of the second display screen 22 can move along the second guide groove 101. A third guide groove 102 with the same trajectory as the third track A34 and / or the third track B35 is provided on the base 100 below the third display screen 23. The guide pillars 212 of the third display screen 23 can move along the third guide groove 102.

[0036] Example 5: Figure 2 and Figure 13 As shown, based on Embodiment 1, Embodiment 2, Embodiment 3 or Embodiment 4, the cross-sections of the second track A32, the second track B33, the third track A34 and the third track B35 are C-shaped and divided into upper and lower parts. The upper part includes an upper semicircular segment 36 with an opening facing downward and an upper fixed segment 37 extending vertically downward on one side. The lower part includes a lower semicircular segment 38 with an opening facing upward and a lower fixed segment 39 extending vertically upward on one side.

[0037] Example 6: Figure 13 As shown, based on Embodiment 5, the bottom of the upper fixing section 37 is provided with a certain number of positioning holes 37.1, and the top of the lower fixing section 39 is provided with corresponding positioning bosses 39.1.

[0038] Example 7: Figure 2 and Figure 14 As shown, based on Embodiment 5 or Embodiment 6, a certain number of reinforcing support plates 310 are provided at the bottom of the second track A32, the second track B33, the third track A34 and the third track B35. The reinforcing support plate 310 includes a horizontal section and upwardly extending longitudinal sections and downwardly extending longitudinal sections at both ends. The downwardly extending longitudinal sections are fixed to the track mounting frame 31 and are provided with ribs 310.1 between them and the horizontal section.

[0039] Example 8: As Figure 1 and Figure 10 As shown, based on Embodiment 5 or Embodiment 6, a track mounting frame 31 fixed to the cantilevered part of the truss 12 and a first track 311 fixed thereon are provided above the first display screen 21. The first track 311 is one in number and is arc-shaped. Two hanging wheel brackets of the same height are fixed at the top of the LED screen truss 24 of the first display screen 21 near both ends. Hanging wheels are provided on the hanging wheel brackets respectively, and the hanging wheels are movably disposed in the first track 311.

[0040] Furthermore, the bottom of the LED screen truss 24 of the first display screen 21 is provided with several universal wheels 211 and one or two guide columns 212. The base 100 below the first display screen 21 is provided with a first guide groove 103 that is the same as the trajectory of the first track 311. The guide column 212 of the first display screen 21 can move along the first guide groove 103.

[0041] Example 9: Figure 1 As shown, based on the above embodiments, the LED screens 25 of the first display screen 21, the second display screen 22, and the third display screen 23 are of the same size, combined with... Figure 3 and Figure 15-16 As shown, the number of the devices is 1 to 4.

[0042] Combination Figure 3-5 As shown, the arc corresponding to the curve where the LED screen 25 is located is 30°.

[0043] The working principle is as follows: Figure 3 As shown, initially, the second display screen 22 and the third display screen 23 are located directly behind the first display screen 21, and at this time, the smallest screen size is displayed; as Figure 4 and Figure 8-9As shown, the movement process is achieved by manual pushing. The second display screen 22 moves in an arc along the second arc segment A32.1 and the second arc segment B33.1 on the concentric circle in the middle via the lower hanging wheel 28 and the upper hanging wheel 29. The third display screen 23 moves in an arc along the third arc segment A34.1 and the third arc segment B35.1 on the inner concentric circle via the lower hanging wheel 28 and the upper hanging wheel 29. Figure 5 and Figure 8-9 As shown, upon termination, the second display screen 22 leaves the middle concentric circle after reaching the second transfer segment A32.2 and the second transfer segment B33.2 until it reaches the concentric circle where the first display screen 21 is located. The third display screen 23 leaves the inner concentric circle after reaching the third transfer segment A34.2 and the third transfer segment B35.2 until it reaches the concentric circle where the first display screen 21 is located. The second display screen 22, the third display screen 23 and the first display screen 21 are spliced ​​together. At this time, the screen with the largest size of a single device is displayed.

[0044] When in use, the angle range and number of devices of the LED curved screen can be selected as needed. Taking the LED screen 25 of the first display screen 21, the second display screen 22 and the third display screen 23 as having the same size and the arc corresponding to the curve of the LED screen 25 being 30° as an example, different numbers of devices have different usage states: When the number of devices is 1, such as Figure 3 and Figure 5 As shown, the smallest curved LED screen is LED screen 25 of the first display screen 21, with an arc of 30°, and the largest curved LED screen is three LED screens 25 spliced ​​together, with an arc of 90°. When the number of devices is 2, such as Figure 15 As shown, the largest curved LED screen consists of 6 LED screens spliced ​​together in 25 sections, with a curvature of 180°. When the number of devices is 3, the largest LED curved screen is 9 LED screens spliced ​​together in 25 layers, with a curvature of 270°. When the number of devices is 4, such as Figure 16 As shown, the largest curved LED screen consists of 12 LED screens spliced ​​together in a 25-panel configuration, with a curvature of 360°, forming a cylindrical screen at all angles.

[0045] The above description is only a specific embodiment of the present invention, but the structural features of the present invention are not limited thereto. The present invention can be used in similar products. Any changes or modifications made by those skilled in the art within the scope of the present invention are covered by the patent scope of the present invention.

Claims

1. A multi-module LED curved screen curve trajectory opening and closing device, characterized in that: Includes bracket assembly, display assembly, and track assembly; The support assembly includes a number of columns (11) fixed to the base (100) and a truss (12) fixed to the columns (11) and cantilevered. The display assembly is connected to the cantilever of the truss (12) and includes at least a first display (21), a second display (22) and a third display (23) from the outside to the inside. The first display (21), the second display (22) and the third display (23) each include an LED screen truss (24) and an LED screen (25) fixed thereon. The first display (21), the second display (22) and the third display (23) are arc-shaped and arranged at equal intervals in the radial direction. The top of the LED screen truss (24) of the second display (22) and the third display (23) are respectively provided with hanging parts (24.1) near both ends. The two hanging parts (24.1) of the LED screen truss (24) are respectively fixed with lower hanging wheel brackets (26) and upper hanging wheel brackets (27) of different heights. The lower hanging wheel brackets (26) and the upper hanging wheel brackets (27) are respectively provided with lower hanging wheels (28) and upper hanging wheels (29). The track assembly includes a track mounting frame (31) fixed to the cantilever of the truss (12) above the second display screen (22) and a second track fixed thereon, and a track mounting frame (31) fixed to the cantilever of the truss (12) above the third display screen (23) and a third track fixed thereon; The second track consists of two tracks, including a lower track A (32) and an upper track B (33). The lower wheel (28) and upper wheel (29) of the second display screen (22) are movably mounted in the second track A (32) and the second track B (33), respectively. The second track A (32) includes a second arc segment A (32.1), and one end of the second arc segment A (32.1) is provided with a second transfer segment A (32.2) that bends outward in the opposite direction. The second track B (33) includes a second arc segment B (33.1), and one end of the second arc segment B (33.1) is provided with a second transfer segment B (33.2) that bends outward in the opposite direction. The third track consists of two tracks, including a lower third track A (34) and an upper third track B (35). The lower hanging wheel (28) and upper hanging wheel (29) of the third display screen (23) are movably mounted in the third track A (34) and the third track B (35), respectively. The third track A (34) includes a third arc segment A (34.1), and one end of the third arc segment A (34.1) is provided with a third transfer segment A (34.2) that bends outward in the opposite direction. The third track B (35) includes a third arc segment B (35.1), and one end of the third arc segment B (35.1) is provided with a third transfer segment B (35.2) that bends outward in the opposite direction. In the lower projection, the distance between the second transfer segment A (32.2) and the second transfer segment B (33.2) is the same as the distance between the two hanging parts (24.1) of the LED screen truss (24) of the second display screen (22). The distance between the third transfer segment A (34.2) and the third transfer segment B (35.2) is the same as the distance between the two hanging parts (24.1) of the LED screen truss (24) of the third display screen (23). The second transfer segment A (32.2) and the second transfer segment B (33.2) are located on both sides of the arc where the LED screen (25) of the first display screen (21) is located, and their ends intersect with the circle where this arc is located.

2. The multi-module LED curved screen curve trajectory opening and closing device according to claim 1, characterized in that: The second display screen (22) and the third display screen (23) are respectively provided with planar thrust ball bearings (210) at the connection between the LED screen truss (24) hanging part (24.1) and the lower hanging wheel bracket (26) and the upper hanging wheel bracket (27).

3. The multi-module LED curved screen curve trajectory opening and closing device according to claim 1, characterized in that: The bottom of the LED screen truss (24) of the second display screen (22) and the third display screen (23) is provided with several casters (211).

4. The multi-module LED curved screen curve trajectory opening and closing device according to claim 3, characterized in that: The LED screen truss (24) of the second display screen (22) and the third display screen (23) is provided with one or two guide columns (212). The guide columns (212) are located directly below the hanging part (24.1). The base (100) below the second display screen (22) is provided with a second guide groove (101) that is the same as the trajectory of the second track A (32) or / and the second track B (33). The guide column (212) of the second display screen (22) can move along the second guide groove (101). The base (100) below the third display screen (23) is provided with a third guide groove (102) that is the same as the trajectory of the third track A (34) or / and the third track B (35). The guide column (212) of the third display screen (23) can move along the third guide groove (102).

5. The multi-module LED curved screen curve trajectory opening and closing device according to claim 1, characterized in that: The cross-sections of the second track A (32), the second track B (33), the third track A (34) and the third track B (35) are C-shaped and divided into upper and lower parts. The upper part includes an upper semicircular segment (36) with an opening facing downward and an upper fixed segment (37) extending vertically downward on one side. The lower part includes a lower semicircular segment (38) with an opening facing upward and a lower fixed segment (39) extending vertically upward on one side.

6. The multi-module LED curved screen curve trajectory opening and closing device according to claim 5, characterized in that: The bottom of the upper fixed section (37) is provided with a certain number of positioning holes (37.1), and the top of the lower fixed section (39) is provided with corresponding positioning bosses (39.1).

7. The multi-module LED curved screen curve trajectory opening and closing device according to claim 5, characterized in that: The bottom of the second track A (32), the second track B (33), the third track A (34) and the third track B (35) are provided with a certain number of reinforcing plates (310). The reinforcing plates (310) include a horizontal section and an upwardly extending longitudinal section and a downwardly extending longitudinal section at both ends. The downwardly extending longitudinal section is fixed to the track mounting frame (31) and is provided with a rib plate (310.1) between it and the horizontal section.

8. The multi-module LED curved screen curve trajectory opening and closing device according to claim 1, characterized in that: Above the first display screen (21) is a track mounting frame (31) fixed to the cantilever of the truss (12) and a first track (311) fixed thereon. The first track (311) is one and is arc-shaped. The top of the LED screen truss (24) of the first display screen (21) has two hanging wheel brackets of the same height fixed near both ends. The hanging wheel brackets are respectively provided with hanging wheels, which are movably set in the first track (311). The LED screen truss (24) of the first display screen (21) is provided with several casters (211) and one or two guide posts (212) at the bottom. The base (100) below the first display screen (21) is provided with a first guide groove (103) that is the same as the trajectory of the first track (311). The guide post (212) of the first display screen (21) can move along the first guide groove (103).

9. A multi-module LED curved screen curve trajectory opening and closing device according to any one of claims 1-8, characterized in that: The LED screens (25) of the first display screen (21), the second display screen (22) and the third display screen (23) are the same size, and the number of the devices is 1 to 4.

10. The multi-module LED curved screen curve trajectory opening and closing device according to claim 9, characterized in that: The arc of the LED screen (25) is 30°.

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