Adjustable curved surface arc LED rental screen

Abstract

This utility model discloses an adjustable curved LED rental screen, belonging to the field of LED screen technology. It includes several bending units, allowing the rental screen to bend and change shape. Each bending unit is a rectangular array composed of four LED modules. Each LED module consists of several vertically arranged back plates, each hinged to an adjacent back plate. An LED screen assembly covers the front side of each back plate, with the back plates facing rearwards and the LED screen assembly facing forwards. In use, the telescopic mechanisms on both sides of the housing simultaneously lengthen, causing two LED modules on each side to bend forward simultaneously, resulting in a backward bend in the bending unit. Conversely, the telescopic mechanisms on both sides shorten, causing two LED modules on each side to bend backwards simultaneously, resulting in a forward bend in the bending unit. This achieves the bending deformation of both the bending unit and the rental screen.

Description

Technical Field

[0001] This utility model relates to an LED rental screen, and more particularly to an LED rental screen with adjustable curvature. Background Technology

[0002] To meet the requirements of rapid installation, disassembly, and transportation in rental settings, LED rental screens are lightweight, thin, easy to install and disassemble, and easy to operate. The entire screen can be assembled, mounted, and disassembled precisely and quickly using quick bolts, and can be spliced ​​into different shapes to meet on-site usage requirements.

[0003] Currently, LED rental screens are usually flat, and many applications are suitable for flat LED rental screens. However, in order to highlight the visual effect, increase the sense of three-dimensionality, or reduce the space occupied in the usage area, ordinary flat LED rental screens are difficult to meet the above requirements. Therefore, there is a need for an LED rental screen with adjustable curvature.

[0004] A search revealed that patent CN114419991A discloses a flexible LED display screen, comprising a module body. The module body is provided with a lamp board and a metal frame. The lamp board has a conductive layer inside, a protective resin layer at one end of the conductive layer, and a PCB board at the other end of the protective resin layer. A magnet frame is fixedly installed on the metal frame, and a magnet is provided inside the magnet frame. A first display screen body and a second display screen body are respectively provided on the upper end of the module body. Both the first display screen body and the second display screen body have a mesh film on their surface, and an upper polarizer is provided at one end of the mesh film.

[0005] The above solution enables the LED display to bend, but it does not provide technical solutions for installation and operation, and cannot solve the problems of how to bend LED displays in reality and the problems of easy installation and disassembly of LED displays. Utility Model Content

[0006] The purpose of this invention is to provide an LED rental screen with adjustable curvature, which has the advantages of easy installation and disassembly, and facilitates bending and deformation of the LED rental screen, effectively solving the problem of difficulty in bending and deforming LED rental screens in the prior art.

[0007] This utility model adopts the following technical solution: an adjustable curved LED rental screen, including several bending units, the rental screen can produce bending changes through the bending units, the bending unit is a rectangular array composed of four LED modules, the LED modules are composed of several vertically arranged back plates, each back plate is hinged to the adjacent back plate, the LED screen assembly is covered and arranged on the front side of each back plate, the back plate direction is the rear side, and the LED screen assembly direction is the front side; two frames are arranged on the rear side of the bending unit, the left frame is fixedly connected to the outer back plate of the two left LED modules, the right frame is fixedly connected to the outer back plate of the two right LED modules, a shell is fixedly arranged between the two left LED modules and the two right LED modules, a telescopic mechanism is arranged between the shell and the frame, the telescopic mechanism is provided with a locking mechanism, when the locking mechanism is open the telescopic mechanism cannot extend or retract, when the locking mechanism is closed the telescopic mechanism can extend or retract.

[0008] Furthermore, the telescopic mechanism includes an outer rod and an inner rod inserted inside the outer rod. The outer end of the outer rod is hinged to the corresponding frame, and the inner end of the inner rod is hinged to the side of the housing.

[0009] Furthermore, the locking mechanism includes a lever hinged to the outer rod, a connecting rod hinged to the bottom end of the lever, a locking rod hinged to the end of the connecting rod away from the lever, and the free end of the locking rod passing through the outer rod and inserting into a locking groove opened on the inner rod; a torsion spring is provided on the hinge shaft where the lever and the outer rod are hinged, and the torsion spring drives the top end of the lever to always move away from the outer rod.

[0010] Furthermore, the upper end face of the inner rod is provided with a scale value, and the upper end face of the outer rod is provided with an observation port for easy observation of the scale value of the inner rod.

[0011] Furthermore, two telescopic mechanisms are provided on the same side of the housing, and a locking mechanism is provided on the upper telescopic mechanism of the two telescopic mechanisms on the same side of the housing; a connecting rod is fixedly provided between the two outer rods on the same side of the housing.

[0012] Furthermore, the bending unit is provided with a first engaging mechanism at its top and left side, and a second engaging mechanism at its bottom and right side. The lower bending unit is connected to the upper bending unit by engaging the first engaging mechanism at its top with the second engaging mechanism at the bottom of the upper bending unit. The right bending unit is connected to the left bending unit by engaging the first engaging mechanism on its left side with the second engaging mechanism on the right side of the left bending unit. The rental screen extends wirelessly in all directions through several bending units.

[0013] Furthermore, the frame consists of a vertical section and end pieces fixed to the top and bottom of the vertical section. The first engaging mechanism includes a rotating pin, with the upper rotating pin rotatably connected to the upper end piece and the left rotating pin rotatably connected to the vertical section of the left side of the frame. A rotating knob is fixedly installed at the inner end of the rotating pin. An annular groove is provided at the outer end of the rotating pin. The second engaging mechanism includes a locking block, with the lower locking block fixedly installed to the lower end piece and the right locking block fixedly installed to the vertical section of the right side of the frame. A slot adapted to the rotating pin is provided on the outer side of the locking block. An insert plate is provided inside the locking block perpendicular to the axis of the slot. The insert plate slides with the locking block. An insertion hole adapted to the slot is provided on the insert plate. A notch is provided on the inner side wall of the insertion hole. A handle is fixedly installed at the outer end of the insert plate. An adjustment hole is provided on the insert plate between the insertion hole and the handle. Bolt holes are provided on the locking block.

[0014] Furthermore, a first mounting groove is provided on the upper part of the rear side of the back plate, and a sliding groove is provided on the inner bottom wall of the first mounting groove, with a limiting groove provided on the inner bottom wall of the sliding groove; a second mounting groove is provided on the bottom of the rear side of the back plate, and a receiving groove corresponding to the sliding groove is provided on the inner bottom wall of the second mounting groove; a first mounting plate is fixedly installed in the first mounting groove, and a second mounting plate is fixedly installed in the second mounting groove; an insert is slidably installed between the first mounting plate and the sliding groove, and a limiting strip is fixedly installed on the side of the insert near the sliding groove at a position corresponding to the limiting groove, with the limiting strip located within the limiting groove; an operating port is provided on the first mounting plate, and a toggle part is fixedly installed on the side of the insert near the first mounting plate, extending from the operating port to the outside of the first mounting plate.

[0015] Furthermore, a support rod is fixedly installed between the end of the frame and the vertical part.

[0016] Furthermore, adjacent backplates in each LED module are connected by a flexible component.

[0017] I. This utility model, by setting up a telescopic mechanism, a frame, and LED modules, allows the telescopic mechanisms on both sides of the housing to simultaneously lengthen during use. This causes each back plate of the two LED modules on both sides of the housing to shift, resulting in the two LED modules on both sides of the housing bending forward simultaneously, thus causing the bending unit to bend backward with an arc. Conversely, the telescopic mechanisms on both sides of the housing shorten, causing each back plate of the two LED modules on both sides of the housing to shift, thus causing the two LED modules on both sides of the housing to bend backward simultaneously, thus causing the bending unit to bend forward with an arc. This achieves the purpose of bending deformation of the bending unit and simultaneously realizes the bending deformation of the rental screen.

[0018] II. This utility model, by setting up a lever, a connecting rod, and a locking rod, allows the top of the lever to be manually pressed during use. The lever rotates and drives the locking rod to move outward through the connecting rod, causing the free end of the locking rod to disengage from the locking groove of the inner rod. This enables the outer rod and the inner rod to extend and retract relative to each other, achieving the purpose of deforming the bending unit as needed. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the bending unit in this utility model;

[0020] Figure 2 In this utility model Figure 2 Enlarged schematic diagram of the structure at point A in the diagram;

[0021] Figure 3 This is a three-dimensional structural diagram of the LED screen assembly in this utility model;

[0022] Figure 4 This is a three-dimensional structural diagram of the shell in this utility model;

[0023] Figure 5 This is a three-dimensional structural diagram of the LED module combination relationship in this utility model;

[0024] Figure 6 In this utility model Figure 5 Enlarged schematic diagram of the structure at point B in the diagram;

[0025] Figure 7 In this utility model Figure 5 Enlarged schematic diagram of the structure at point C;

[0026] Figure 8 In this utility model Figure 5 Enlarged schematic diagram of the structure at point D;

[0027] Figure 9 This is a three-dimensional structural diagram of the frame in this utility model;

[0028] Figure 10 This is a three-dimensional structural diagram of the card block in this utility model;

[0029] Figure 11 This is a three-dimensional structural diagram of the card block and insert plate in this utility model;

[0030] Figure 12 This is a three-dimensional structural diagram of the connection state between the frame and the telescopic mechanism in this utility model;

[0031] Figure 13 In this utility model Figure 12 Enlarged schematic diagram of the structure at point E in the diagram;

[0032] Figure 14This is a three-dimensional structural diagram of the LED module in this utility model;

[0033] Figure 15 In this utility model Figure 14 Enlarged schematic diagram of the structure at point F;

[0034] Figure 16 This is a three-dimensional structural diagram of the insert in this utility model;

[0035] Figure 17 This is a three-dimensional structural diagram of the backplate in this utility model;

[0036] Figure 18 In this utility model Figure 20 Enlarged schematic diagram of the structure at point G in the diagram;

[0037] Figure 19 This is a three-dimensional structural diagram of the LED screen assembly and backplate connection state in this utility model;

[0038] Figure 20 In this utility model Figure 22 Enlarged schematic diagram of the structure at point H in the diagram;

[0039] Figure 21 This is a schematic diagram of the internal three-dimensional structure of the connecting rod in this utility model;

[0040] Figure 22 In this utility model Figure 21 Enlarged schematic diagram of the structure at point I;

[0041] Figure 23 This is a three-dimensional structural diagram of the lever in this utility model.

[0042] In the diagram, 1. Bending unit; 2. LED module; 3. Back plate; 4. LED screen assembly; 5. Frame; 6. Housing; 7. Telescopic mechanism; 8. Locking mechanism; 9. Outer rod; 10. Inner rod; 11. Lever; 12. Connecting rod; 13. Locking rod; 14. Locking groove; 15. Scale value; 16. Observation port; 17. Connecting rod; 18. First locking mechanism; 19. Second locking mechanism; 20. Vertical part; 21. End; 22. Rotating pin; 23. Rotating knob; 24. Annular groove; 25. Locking block; 26. 27. Slot; 28. Insert plate; 29. ​​Socket; 30. Notch; 31. Handhold; 32. Adjustment hole; 33. Bolt hole; 34. First mounting slot; 35. Slide groove; 36. Limiting groove; 37. Second mounting slot; 38. Receiving groove; 39. First mounting plate; 40. Insert strip; 41. Limiting strip; 42. Operating port; 43. Actuating part; 44. Support rod; 45. Flexible component; 46. Power socket; 47. Data cable socket; 48. Power switch; 49. Frame; 50. Locking assembly. Detailed Implementation

[0043] Please see Figure 1-23 The present invention will now be described in detail with reference to the accompanying drawings and embodiments:

[0044] The adjustable curved LED rental screen of this utility model includes several bending units 1, which allow the rental screen to bend and change shape. Each bending unit 1 is a rectangular array composed of four LED modules 2. Each LED module 2 is composed of several vertically arranged back plates 3, each back plate 3 being hinged to an adjacent back plate 3. An LED screen assembly 4 covers the front side of each back plate 3, with the back plates 3 facing rearwards and the LED screen assembly 4 facing frontwards. Two frames 5 are arranged on the rear side of the bending unit 1. The left frame 5 is fixedly connected to the outer back plates 3 of the two left LED modules 2, and the right frame 5 is fixedly connected to the outer back plates 3 of the two right LED modules 2. A housing 6 is fixedly arranged between the two left LED modules 2 and the two right LED modules 2. A telescopic mechanism 7 is arranged between the housing 6 and the frame 5. The telescopic mechanisms 7 on both sides of the housing 6 simultaneously increase in length, causing each back plate 3 of the two LED modules 2 on both sides of the housing 6 to shift, thereby causing the two LED modules 2 on both sides of the housing 6 to move in the same direction. The bending unit 1 bends forward, meaning its left and right ends bend forward and its middle bends backward, resulting in a backward-curving arc. The telescopic mechanisms 7 on both sides of the housing 6 shorten, causing each backplate 3 of the two LED modules 2 on both sides of the housing 6 to shift, thus causing the two LED modules 2 on both sides of the housing 6 to simultaneously bend backward. The telescopic mechanism 7 is equipped with a locking mechanism 8; when the locking mechanism 8 is open, the telescopic mechanism 7 cannot extend or retract; when the locking mechanism 8 is closed, the telescopic mechanism 7 can extend or retract. One of the telescopic mechanisms 7 on both sides of the housing 6 becomes longer, and the other becomes shorter, causing the bending unit 1 to produce an S-shaped bend. When the backplate 3 moves, the LED screen assembly 4 undergoes adaptive bending deformation. If multiple bending units 1 are arranged and connected in the left-right direction, each bending unit 1 bends along the same arc direction, allowing multiple bending units 1 to be connected end-to-end to form a circle.

[0045] In this embodiment, the telescopic mechanism 7 includes an outer rod 9 and an inner rod 10 inserted inside the outer rod 9. The outer end of the outer rod 9 is hinged to the corresponding frame 5, and the inner end of the inner rod 10 is hinged to the side of the housing 6. The inner rod 10 extends out from the outer rod 9, and the overall length of the inner rod 10 and the outer rod 9 increases, causing the two LED modules 2 on the corresponding side to bend backward in an arc. The inner rod 10 retracts into the outer rod 9, and the overall length of the inner rod 10 and the outer rod 9 decreases, causing the two LED modules 2 on the corresponding side to bend forward in an arc. The telescopic mechanisms 7 of the same bending unit 1 extend simultaneously, and the left and right sides of the bending unit 1 bend forward. The telescopic mechanisms 7 of the same bending unit 1 shorten simultaneously, and the left and right sides of the bending unit 1 bend backward. One of the telescopic mechanisms 7 of the same bending unit 1 extends while the other shortens, and the bending unit 1 is bent in an S-shape. The locking mechanism 8 cooperates to open and close.

[0046] In this embodiment, the locking mechanism 8 includes a lever 11 hinged to the outer rod 9. A connecting rod 12 is hinged to the bottom end of the lever 11, and a locking rod 13 is hinged to the end of the connecting rod 12 away from the lever 11. The free end of the locking rod 13 passes through the outer rod 9 and inserts into a locking groove 14 opened on the inner rod 10, thereby locking the relative positions of the outer rod 9 and the inner rod 10, i.e., opening the locking mechanism 8. When the top of the lever 11 is manually pressed, the lever 11 rotates, driving the locking rod 13 outward through the connecting rod 12, so that the free end of the locking rod 13 moves outward from the inner rod 10. The locking rod 13 disengages from the locking groove 14, allowing the outer rod 9 and inner rod 10 to extend and retract relative to each other, i.e., the locking mechanism 8 is closed. A torsion spring is provided on the hinge shaft where the lever 11 is hinged to the outer rod 9. The torsion spring drives the top of the lever 11 to always move away from the outer rod 9, thereby keeping the locking rod 13 inserted into the locking groove 14. The locking rod 13 can be disengaged from the locking groove 14 by pressing the top of the lever 11 with external force. The locking rod 13 passes through the outer rod 9, and when the locking rod 13 moves outward and inward, it moves linearly under the restriction of the outer rod 9.

[0047] To more intuitively show the displacement of the inner rod 10 relative to the outer rod 9, in this embodiment, the upper end face of the inner rod 10 is provided with a scale value 15, and the upper end face of the outer rod 9 is provided with an observation port 16 for easy observation of the scale value 15 of the inner rod 10; when the inner rod 10 is displaced relative to the outer rod 9, the scale on the inner rod 10 can be seen intuitively through the observation port 16 to determine the displacement of the inner rod 10 relative to the outer rod 9.

[0048] To enable the inner rod 10 and outer rod 9 to more stably control the displacement of the back plate 3, in this embodiment, two telescopic mechanisms 7 are provided on the same side of the housing 6, and a locking mechanism 8 is provided on the upper telescopic mechanism 7 of the two telescopic mechanisms 7 on the same side of the housing 6; a connecting rod 17 is fixedly provided between the two outer rods 9 on the same side of the housing 6; in use, by holding the connecting rods 17 on the left and right sides of the housing 6 with both hands respectively, and then pressing the top of the lever 11 with both thumbs at the same time, the locking mechanism 8 is closed, and then the hands apply force to each other, so that the inner rod 10 and outer rod 9 produce relative displacement, thereby realizing the bending of the bending unit 1; the setting of the connecting rod 17 also has the function of facilitating operation.

[0049] To achieve the goal of interconnecting several bending units 1 to form a large-area rental screen, in this embodiment, a first engaging mechanism 18 is provided at the top and left side of the bending unit 1, and a second engaging mechanism 19 is provided at the bottom and right side of the bending unit 1. The lower bending unit 1 is connected to the upper bending unit 1 by engaging the first engaging mechanism 18 at the top and the second engaging mechanism 19 at the bottom of the upper bending unit 1; the right bending unit 1 is connected to the left bending unit 1 by engaging the first engaging mechanism 18 on the left and the second engaging mechanism 19 on the right side of the left bending unit 1; thus, the rental screen can be wirelessly extended in all directions through the bending units 1.

[0050] In this embodiment, the frame 5 consists of a vertical part 20 and end pieces 21 fixed to the top and bottom of the vertical part 20. The first engaging mechanism 18 includes a rotating pin 22, with the upper rotating pin 22 rotatably connected to the upper end piece 21 and the left rotating pin 22 rotatably connected to the left vertical part 20 of the frame 5. A rotating knob 23 is fixedly provided at the inner end of the rotating pin 22. An annular groove 24 is provided at the outer end of the rotating pin 22. The second engaging mechanism 19 includes a locking block 25. The lower locking block 25 is fixedly installed to the lower end 21, and the right-side locking block 25 is fixedly installed to the vertical part 20 of the right-side frame 5; the outer side of the locking block 25 has a slot 26 adapted to the rotating pin 22, and an insert plate 27 is arranged inside the locking block 25 perpendicular to the axis of the slot 26. The insert plate 27 is slidably installed with the locking block 25, and the insert plate 27 has a socket 28 adapted to the slot 26. The inner side wall of the socket 28 has a notch 29; the insert plate 27 A handle 30 is fixedly provided at the outer end. An adjustment hole 31 is provided on the insert plate 27 between the insertion hole 28 and the handle 30. A bolt hole 32 is provided on the locking block 25. In use, the lower bending unit 1 is inserted into the slot 26 of the locking block 25 at the bottom of the upper bending unit 1 through the rotating pin 22 at the top. Then, by pulling the insert plate 27 outward, the insertion hole 28 of the insert plate 27 is misaligned with the slot 26 of the locking block 25, and the notch 29 of the insertion hole 28 of the insert plate 27 enters the annular groove 24 of the rotating pin 22 to achieve the engagement of the rotating pin 22 and the locking block 25. Then, the bolt is passed through the bolt hole 32 of the locking block 25 and the adjustment hole 31 of the insert plate 27, and then the nut is screwed on the bolt to fix the position of the insert plate 27. In this way, the engagement of the rotating pin 22 and the locking block 25 is achieved, and the connection between the lower bending unit 1 and the upper bending unit 1 is achieved. The connection between the left and right bending units 1 is the same.

[0051] To connect the backplates 3 of the two LED modules 2, in this embodiment, a first mounting groove 33 is provided on the upper part of the rear side of the backplate 3, and a sliding groove 34 is provided on the inner bottom wall of the first mounting groove 33. A limiting groove 35 is provided on the inner bottom wall of the sliding groove 34. A second mounting groove 36 is provided on the bottom of the rear side of the backplate 3, and a receiving groove 37 corresponding to the sliding groove 34 is provided on the inner bottom wall of the second mounting groove 36. A first mounting plate 38 is fixedly installed in the first mounting groove 33, and a second mounting plate 39 is fixedly installed in the second mounting groove 36. An insert 40 is slidably installed between the first mounting plate 38 and the sliding groove 34, with the insert 40 close to the sliding groove 34. A limiting strip 41 is fixedly provided on one side of the insertion strip 40 at a position corresponding to the limiting groove 35, and the limiting strip 41 is located inside the limiting groove 35; an operation port 42 is provided on the first mounting plate 38, and a toggle part 43 is fixedly provided on one side of the insertion strip 40 that is close to the first mounting plate 38, extending from the operation port 42 to the outside of the first mounting plate 38; by moving the toggle part 43 up and down by hand, the insertion strip 40 slides up and down in the sliding groove 34, while the limiting strip 41 slides up and down in the limiting groove 35, so as to realize the purpose of inserting the top of the insertion strip 40 into or out of the receiving groove 37, thereby realizing the purpose of connecting the lower back plate 3 and the upper back plate 3.

[0052] In order to ensure the stability of the connection between the end 21 of the frame 5 and the vertical part 20, in this embodiment, a support rod 44 is fixedly provided between the end 21 of the frame 5 and the vertical part 20.

[0053] In this embodiment, adjacent backplates 3 in each LED module 2 are connected by a flexible member 45 to achieve hinged connection of adjacent backplates 3.

[0054] In this embodiment, the LED screen assembly 4 is made of a flexible material; it can be bent to a set degree; the LED screen assembly 4 is a composite layer structure, which belongs to the prior art, and is composed of a polarizer, a three-primary-color filter, a liquid crystal, a thin film transistor, a polarizer, a quantum dot strengthening film and a blue LED backlight panel from front to back.

[0055] In this embodiment, a frame 49 is fixedly provided on the middle of the rear side of the LED module 2, and a locking assembly 50 is fixedly provided on the frame 49 and the housing 6. The frame 49 and the housing 6 are connected by the locking assembly 50.

[0056] In this embodiment, a power socket 46 and a data cable socket 47 are installed on the side of the housing 6, and a power switch 48 is installed on the front side of the housing 6.

[0057] The working principle of this utility model is as follows: The back plates 3 that are hinged to each other form LED modules 2. Four LED modules 2 form a rectangular array to form a bending unit 1. The bending unit 1 achieves bending deformation through the telescopic mechanism 7. Several bending units 1 are connected together by the locking of the rotating pin 22 and the locking block 25 to form a large-area rental screen. By holding the connecting rods 17 on the left and right sides of the housing 6 with both hands respectively, and then pressing the top of the lever 11 with both thumbs at the same time, the locking mechanism 8 is closed. Then, the hands apply force to each other, so that the inner rod 10 and the outer rod 9 produce relative displacement, thereby realizing the bending of the bending unit 1.

Claims

1. An adjustable curved LED rental screen, comprising a plurality of bending units (1), wherein the rental screen can produce zigzag changes through the bending units (1), characterized in that: The bending unit (1) is a rectangular array composed of four LED modules (2). The LED modules (2) are composed of several vertically arranged back plates (3). Each back plate (3) is hinged to the adjacent back plate (3). The LED screen assembly (4) is covered and arranged on the front side of each back plate (3). The direction of the back plate (3) is the rear side, and the direction of the LED screen assembly (4) is the front side. Two frames (5) are arranged on the rear side of the bending unit (1). The left frame (5) is fixedly connected to the back plate (3) on the outside of the two LED modules (2) on the left side. The right frame (5) is fixedly connected to the two back plates (3) on the outside of the two LED modules (2) on the right side. A housing (6) is fixedly arranged between the two LED modules (2) on the left side and the two LED modules (2) on the right side. A telescopic mechanism (7) is arranged between the housing (6) and the frame (5). A locking mechanism (8) is arranged on the telescopic mechanism (7). When the locking mechanism (8) is open, the telescopic mechanism (7) cannot be extended or retracted. When the locking mechanism (8) is closed, the telescopic mechanism (7) can be extended or retracted.

2. The LED rental screen with adjustable curvature according to claim 1, characterized in that: The telescopic mechanism (7) includes an outer rod (9) and an inner rod (10) inserted inside the outer rod (9). The outer end of the outer rod (9) is hinged to the corresponding frame (5), and the inner end of the inner rod (10) is hinged to the side of the shell (6).

3. The LED rental screen with adjustable curvature according to claim 2, characterized in that: The locking mechanism (8) includes a lever (11) hinged to the outer rod (9), a connecting rod (12) hinged to the bottom end of the lever (11), a locking rod (13) hinged to the end of the connecting rod (12) away from the lever (11), and the free end of the locking rod (13) passes through the outer rod (9) and inserts into the locking groove (14) opened on the inner rod (10); a torsion spring is provided on the hinge axis where the lever (11) and the outer rod (9) are hinged, and the torsion spring drives the top end of the lever (11) to always move away from the outer rod (9).

4. The LED rental screen with adjustable curvature according to claim 3, characterized in that: The upper end face of the inner rod (10) is provided with a scale value (15), and the upper end face of the outer rod (9) is provided with an observation port (16) for easy observation of the scale value (15) of the inner rod (10).

5. The LED rental screen with adjustable curvature according to claim 2, characterized in that: Two telescopic mechanisms (7) are provided on the same side of the housing (6), and a locking mechanism (8) is provided on the upper telescopic mechanism (7) of the two telescopic mechanisms (7) on the same side of the housing (6); a connecting rod (17) is fixedly provided between the two outer rods (9) on the same side of the housing (6).

6. The LED rental screen with adjustable curvature according to claim 1, characterized in that: The bending unit (1) is provided with a first engaging mechanism (18) at the top and left side, and a second engaging mechanism (19) at the bottom and right side. The lower bending unit (1) is connected to the upper bending unit (1) by engaging the first engaging mechanism (18) at the top and the second engaging mechanism (19) at the bottom of the upper bending unit (1). The right bending unit (1) is connected to the left bending unit (1) by engaging the first engaging mechanism (18) on the left and the second engaging mechanism (19) on the right side of the left bending unit (1). The rental screen extends wirelessly to all sides through several bending units (1).

7. The LED rental screen with adjustable curvature according to claim 6, characterized in that: The frame (5) consists of a vertical part (20) and end pieces (21) fixed to the top and bottom of the vertical part (20). The first engaging mechanism (18) includes a rotating pin (22), the upper rotating pin (22) is rotatably connected to the upper end piece (21), and the left rotating pin (22) is rotatably connected to the left vertical part (20) of the frame (5). A rotating knob (23) is fixedly provided on the inner end of the rotating pin (22). An annular groove (24) is provided on the outer end of the rotating pin (22). The second engaging mechanism (19) includes a locking block (25), the lower locking block (25) is fixedly provided to the lower end piece (21), and the right locking block (25) is fixedly provided to the right end piece (21). The vertical part (20) of the frame (5) is fixedly installed; the outer side of the locking block (25) is provided with a slot (26) that is compatible with the rotating pin (22); the locking block (25) is provided with a plate (27) perpendicular to the axis of the slot (26); the plate (27) and the locking block (25) are slidably installed; the plate (27) is provided with a hole (28) that is compatible with the slot (26); the inner side wall of the hole (28) is provided with a notch (29); the outer end of the plate (27) is fixedly provided with a handle (30); the plate (27) between the hole (28) and the handle (30) is provided with an adjustment hole (31); the locking block (25) is provided with a bolt hole (32).

8. The LED rental screen with adjustable curvature according to claim 1, characterized in that: The back plate (3) has a first mounting groove (33) on the upper part of its rear side surface. The inner bottom wall of the first mounting groove (33) has a sliding groove (34) and the inner bottom wall of the sliding groove (34) has a limiting groove (35). The bottom of the rear side surface of the back plate (3) has a second mounting groove (36) and the inner bottom wall of the second mounting groove (36) has a receiving groove (37) corresponding to the sliding groove (34). A first mounting plate (38) is fixedly installed in the first mounting groove (33) and a second mounting plate (39) is fixedly installed in the second mounting groove (36). An insert (40) is slidably provided between the first mounting plate (38) and the slide groove (34). A limit strip (41) is fixedly provided on the side of the insert (40) near the slide groove (34) at the position corresponding to the limit groove (35). The limit strip (41) is located in the limit groove (35). An operation port (42) is provided on the first mounting plate (38). A toggle part (43) is fixedly provided on the side of the insert (40) near the first mounting plate (38). The toggle part (43) extends from the operation port (42) to the outside of the first mounting plate (38).

9. The LED rental screen with adjustable curvature according to claim 7, characterized in that: A support rod (44) is fixedly installed between the end (21) and the vertical part (20) of the frame (5).

10. The LED rental screen with adjustable curvature according to claim 1, characterized in that: The adjacent backplates (3) in each LED module (2) are connected by a flexible element (45).

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