Foldable LED Display

Abstract

This application discloses a foldable LED display screen, comprising multiple vertically arranged LED display modules and at least one guide rail vertically positioned behind each LED display module. Each LED display module includes a support frame and multiple LED light strips positioned on the front of the support frame. The multiple LED display modules are connected alternately using a first hinge that can fold forward and a second hinge that can fold backward. A pulley is hinged to the rear end of the first hinge. A row of pulleys arranged vertically is mounted on the guide rail and can slide up and down along the guide rail. This design not only ensures the structural stability of the LED display screen in its fully unfolded state but also improves the stability of the LED display screen during unfolding / folding.

Description

Technical Field

[0001] This application relates to the field of LED display technology, and in particular to a foldable LED display. Background Technology

[0002] Compared to traditional outdoor media such as inkjet printing, LED displays have advantages such as energy saving, environmental protection, easy content replacement, and greater visual appeal, and are widely used in scenarios such as advertising and information display.

[0003] A typical foldable LED display consists of several LED display modules arranged in sequence, with adjacent LED display modules connected by hinges to allow the LED display to be unfolded or folded. Utility model patent CN203689840U discloses a vertically folding LED screen, which includes multiple vertically arranged LED sub-screens, multiple steel wires, and a load-bearing steel wire. The multiple LED sub-screens are connected to each other by hinges. One end of each steel wire is connected to the back of the LED sub-screen, and the other end is connected to a ring buckle. One end of the load-bearing steel wire is fixed, and the other end passes through all the ring buckles in sequence. It is driven by a motor or manually pulled to realize the folding or unfolding of the LED display screen. Utility model patent CN211237592U discloses a foldable outdoor grid LED display device, which includes a telescopic device and an LED folding screen suspended below the telescopic device. The LED folding screen includes multiple fixed frames, on which display units are installed. Adjacent fixed frames are connected by folding hinges. The telescopic device drives the LED folding screen to rise or fall, thereby realizing the unfolding or folding of the LED folding screen.

[0004] For foldable LED displays, it is necessary to ensure their structural stability when fully unfolded and their smoothness during the folding / unfolding process in order to avoid damage to the LED display. However, existing foldable LED displays, such as the foldable LED display disclosed in the aforementioned patent, have the problem that it is difficult to guarantee both the structural stability when fully unfolded and the smoothness during the folding / unfolding process. Summary of the Invention

[0005] The technical problem to be solved by this application is to provide a foldable LED display screen, which can not only ensure the structural stability of the LED display screen in the fully unfolded state, but also improve the stability of the LED display screen during the unfolding / folding process.

[0006] To solve the above-mentioned technical problems, this application adopts the following technical solution: a foldable LED display screen, comprising a plurality of vertically arranged LED display modules and at least one guide rail vertically arranged at the rear of the LED display modules, wherein each LED display module includes a support frame and a plurality of LED light strips arranged on the front of the support frame, the plurality of LED display modules are connected to each other alternately by a first hinge that can be folded forward and a second hinge that can be folded backward, a pulley is hinged to the rear end of the first hinge, and the pulleys arranged in a vertical row are arranged on a guide rail and can slide up and down along the guide rail.

[0007] The beneficial technical effect of this application is that the disclosed foldable LED display screen has a pulley component hinged at the rear end of the first hinge, and the pulley component is slidably disposed on the guide rail located at the rear of the LED display group, thereby playing a traction and limiting role on the LED display module. This not only ensures the stability of the LED display screen during the unfolding / folding process, but also improves the structural stability of the LED display screen in the fully unfolded state. Attached Figure Description

[0008] Figure 1 This is a side view of the foldable LED display screen of this application.

[0009] Figure 2 This is a three-dimensional structural diagram of the LED display module of this application from a frontal viewing angle.

[0010] Figure 3 This is a three-dimensional structural diagram of the LED display module from the rear view angle of this application.

[0011] Figure 4 This is a three-dimensional structural diagram of the supporting frame of this application from a frontal view.

[0012] Figure 5 yes Figure 4 An enlarged view of part A.

[0013] Figure 6 yes Figure 4 An enlarged view of part B.

[0014] Figure 7 This is a three-dimensional structural diagram of the pressing block of this application.

[0015] Figure 8 This is an exploded structural diagram of the pressing block of this application.

[0016] Figure 9 This is a three-dimensional structural diagram of the first hinge and pulley component of this application.

[0017] Figure 10This is an exploded structural diagram of the first hinge and pulley component of this application.

[0018] Figure 11 This is a three-dimensional structural diagram of the second hinge of this application.

[0019] Figure 12 This is an exploded structural diagram of the second hinge of this application.

[0020] Figure 13 This is a schematic diagram of the first hinge of this application in the process of unfolding / folding.

[0021] Figure 14 This is a schematic diagram of the second hinge of this application in the process of unfolding / folding. Detailed Implementation

[0022] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0023] It should be understood that, unless otherwise expressly specified and limited, in the description of this application, the term "multiple" means two or more; the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated; the terms "installation" and "connection" should be interpreted broadly, for example, "connection" can be a fixed connection, a detachable connection, or an integral connection, and can be a direct connection or an indirect connection through an intermediate medium; the terms "vertical," "lateral," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the indicated position or element must have a specific orientation or be constructed in a specific orientation.

[0024] See Figures 1 to 6In some embodiments of this application, the foldable LED display screen includes a plurality of vertically arranged LED display modules 10 and at least one vertically arranged guide rail 20 at the rear of the LED display modules 10. The LED display modules 10 are connected alternately by a forward-folding first hinge 30 and a backward-folding second hinge 40. A pulley 50 is hinged to the rear end of the first hinge 30. The pulleys 50, arranged in a vertical row, are disposed on the guide rail 20 and can slide up and down along the guide rail 20. By hinged to the pulleys 50 at the rear end of the first hinge 30 and slidably disposed on the guide rail 20 at the rear of the LED display modules 10, the LED display modules 10 are tractioned and constrained, which not only ensures the stability of the LED display screen during unfolding / folding but also improves the structural stability of the LED display screen in the fully unfolded state.

[0025] Combination Figures 2 to 4 As shown, the LED display module 10 includes a support frame 11 and a plurality of LED light strips 12 disposed on the front side of the support frame 11. In the embodiment shown in the figure, the support frame 11 includes two vertical rods 110 distributed from left to right and two horizontal rods 111 fixedly connected to the vertical rods 110. Each horizontal rod 111 has a slot 112 at its front. Each LED light strip 12 has a locking block 120 fixed at its upper and lower ends on its back side. The two locking blocks 120 are respectively engaged in the two slots 112 and fixed, thereby realizing the setting of the LED light strip 12 on the support frame 11. Preferably, one of the horizontal rods 111 is designed as a square wire groove structure, so that it can be used for the setting of electrical components such as power driver box and power signal line. As shown in the figure, in this embodiment, the LED display module 10 also includes a wire groove 113 disposed longitudinally in the middle of the support frame 11 for the passage of power signal line.

[0026] In the embodiment shown in the accompanying drawings, the pulleys 50 of the foldable LED display screen are arranged in two rows, thereby providing two guide rails 20 for sliding connection of the two rows of pulleys 50. Those skilled in the art will understand that in other embodiments, more or fewer rows of pulleys 50 may be provided, and a corresponding number of guide rails 20 may be configured for sliding connection of the pulleys 50.

[0027] The foldable LED display includes a vertically arranged pull cord 60, which is used to unfold or fold the LED display module 10. (See attached image) Figures 1 to 6As shown, the pull cord 60 is fixed to the support frame 11 of each LED display module 10. When unfolding, the pull cord 60 is pulled upwards, causing the LED display modules 10 to flip and unfold sequentially from top to bottom until the LED display screen is fully unfolded. When folding, the pull cord 60 is released downwards, and under the action of gravity, the LED display modules 10 flip and fold sequentially from bottom to top until the LED display screen is fully folded. In the embodiment shown in the attached figure, two longitudinal pull cords 60 are provided, and the unfolding or folding of the LED display screen is achieved by manipulating the pull cords 60. Of course, in other embodiments, the number of pull cords 60 can be more or less depending on the actual size of the LED display screen to be manufactured. Preferably, the pull cord 60 is made of steel wire rope; however, various suitable ropes available in the prior art can also be used.

[0028] Combination Figure 7 and Figure 8 The pull rope 60 is fixed to the support frame 11 by a plurality of pressure blocks 61. Each pressure block 61 includes a lower pressure block 610 fixed to the support frame 11 and an upper pressure block 611 covering the lower pressure block 610. The lower pressure block 610 has a longitudinal lower receiving groove 6100 recessed on its front side, and the upper pressure block 611 has a longitudinal upper receiving groove 6110 recessed on its back side. The pull rope 60 is clamped between the lower receiving groove 6100 and the upper receiving groove 6110, and the upper pressure block 611 and the lower pressure block 610 are screwed together with screws to achieve a fixed connection between the pull rope 60 and the support frame 11.

[0029] In the embodiment shown in the attached drawings, each LED display module 10 has two pressure blocks 61 on its support frame 11 corresponding to each pull cord 60. The two pressure blocks 61 are respectively fixed to the upper and lower ends of the vertical rod 110. Preferably, the vertical rod 110 is designed as a hollow tubular structure, the pressure blocks 61 are fixed inside the vertical rod 110, and the pull cord 60 passes through the vertical rod 110 and is clamped and fixed by the pressure blocks 61. Passing the pull cord 60 through the hollow tubular vertical rod 110 improves the overall aesthetics of the foldable LED display screen. As shown in the attached drawings, an opening 1100 is formed on the front of the vertical rod 110 corresponding to each pressure block 61. The opening 1100 facilitates the user's disassembly / installation of the upper pressure block 611.

[0030] Combination Figure 9 and Figure 10As shown, the pulley component 50 is hinged to the rear end of the first hinge 30. It includes a pulley seat 51 and a plurality of pulleys 52 rotatably mounted on the pulley seat 51. The front end of the pulley seat 51 is hinged to the rear end of the first hinge 30. The plurality of pulleys 52 are respectively disposed on the front and rear sides of the guide rail 20 and sandwich the guide rail 20 therebetween, so that the pulleys 52 can slide up and down along the guide rail 20. In the embodiment shown in the figure, the pulley seat 51 includes a left side plate 510 and a right side plate 511 opposite to the left side plate 510. The two ends of the pulley shaft (not shown in the figure) of the pulley 52 are fixedly connected to the left side plate 510 and the right side plate 511 of the pulley seat, so that the pulley 52 is rotatably mounted between the left side plate 510 and the right side plate 511 of the pulley seat. As shown in the attached diagram, in this embodiment, the pulley component 50 is provided with four pulleys 52. Two pulleys 52 are located on the front side of the guide rail 20, and the other two pulleys 52 are located on the rear side of the guide rail 20, with the guide rail 20 sandwiched between the front and rear pulleys 52. It is understood that in other embodiments, more (e.g., six) or fewer (e.g., two) pulleys 52 may be provided, with the pulleys 52 clamping the guide rail 20 from both the front and rear sides.

[0031] The first hinge 30 can be folded forward, see reference. Figure 5 , Figure 9 and Figure 10 In this preferred embodiment, the first hinge 30 is composed of two parallel first hinge units 31. Each first hinge unit 31 includes a first hinge seat 310, a first upper insert 312 hinged to the upper front end of the first hinge seat 310 and having a first upper sector gear 311 formed at its rear end, and a first lower insert 314 hinged to the lower front end of the first hinge seat 310 and having a first lower sector gear 313 formed at its rear end. The first upper sector gear 311 and the first lower sector gear 313 mesh with each other. The front ends of the two first upper inserts 312 are inserted together into the support frame 11 of the upper LED display module 10, and the front ends of the two first lower inserts 314 are inserted together into the support frame 11 of the lower LED display module 10. They are fixed with fasteners such as screws, thereby connecting adjacent LED display modules 10 by means of the first hinge 30 and allowing them to be folded forward. During the unfolding / folding process of the LED display screen, due to the meshing and rotation of the first upper connector 312 and the first lower connector 314, such as... Figure 13As shown, the angle α1 between the first upper connector 312 and the first hinge seat 310 and the angle α2 between the first lower connector 314 and the first hinge seat 310 remain the same, thus ensuring the stability of the LED display screen during unfolding / folding. Furthermore, since the first upper connector 312 and the first lower connector 314 mesh, the structural stability of the LED display screen in its fully unfolded state is also improved. As shown in the attached figure, the rear ends of the two first hinge units 31 are placed between the left side plate 510 and the right side plate 511 of the pulley seat 51, and a pin 512 passes through the left side plate 510, the two first hinge units 31, and the right side plate 511, thereby achieving a hinge connection between the first hinge 30 and the pulley component 50.

[0032] As shown in the attached figures, in this embodiment, the first hinge seat 310 includes a first side plate 3100 and a second side plate 3101 disposed relative to the first side plate 3100. The first upper insert 312 is fitted with a first bearing 3120, and a first spindle 3121 passes through the first bearing 3120. The two ends of the first spindle 3121 are fixed to the first side plate 3100 and the second side plate 3101 respectively, thereby realizing the hinge connection between the first upper insert 312 and the first hinge seat 310. The first lower insert 314 is fitted with a second bearing 3140, and a second spindle 3141 passes through the second bearing 3140. The two ends of the second spindle 3141 are fixed to the first side plate 3100 and the second side plate 3101 respectively, thereby realizing the hinge connection between the first lower insert 314 and the first hinge seat 310.

[0033] In the embodiment shown in the accompanying drawings, the first hinge 30 is composed of two first hinge units 31 arranged side by side. In other embodiments, one first hinge unit 31 may be used to form the first hinge 30, or three or more first hinge units 31 arranged side by side may be used to form the first hinge 30.

[0034] In some preferred embodiments, the vertical rod 110 of the support frame 11 is designed as a hollow tubular structure. The front end of the first upper connector 312 is inserted into the upper vertical rod 110 of the support frame 11 and fixed with fasteners such as screws. The front end of the first lower connector 314 is inserted into the lower vertical rod 110 of the support frame 11 and fixed with fasteners such as screws. This plug-in connection method improves the stability of the connection between the first hinge 30 and the adjacent LED display module 10.

[0035] The second hinge 40 can be folded backwards, see reference. Figure 6 , Figure 11 and Figure 12In this preferred embodiment, the second hinge 40 is composed of two parallel second hinge units 41. Each second hinge unit 41 includes a second hinge seat 410, a second upper insert 412 hinged to the upper part of the second hinge seat 410 and having a second upper sector gear 411 formed at its front end, and a second lower insert 414 hinged to the lower part of the second hinge seat 410 and having a second lower sector gear 413 formed at its front end. The second upper sector gear 411 and the second lower sector gear 413 mesh with each other. The rear ends of the two second upper inserts 412 are inserted together into the support frame 11 of the upper LED display module 10, and the rear ends of the two second lower inserts 414 are inserted together into the support frame 11 of the lower LED display module 10. They are fixed with fasteners such as screws, thereby connecting adjacent LED display modules 10 by means of the second hinge 40 and allowing them to be folded backward. During the unfolding / folding process of the LED display screen, due to the meshing and rotation of the second upper connector 412 and the second lower connector 414, such as Figure 14 As shown, the angle β1 between the second upper connector 412 and the second hinge seat 410 and the angle β2 between the second lower connector 414 and the second hinge seat 410 are always the same, thereby ensuring the stability of the LED display screen during the unfolding / folding process. In addition, since the second upper connector 412 and the second lower connector 414 are engaged, the structural stability of the LED display screen in the fully unfolded state can also be improved.

[0036] As shown in the attached figures, in this embodiment, the second hinge seat 410 includes a third side plate 4100 and a fourth side plate 4101 disposed relative to the third side plate 4100. The second upper insert 412 is fitted with a third bearing 4120, and a third spindle 4121 passes through the third bearing 4120. The two ends of the third spindle 4121 are respectively fixed to the third side plate 4100 and the fourth side plate 4101, thereby realizing the hinge connection between the second upper insert 412 and the second hinge seat 410. The second lower insert 414 is fitted with a fourth bearing 4140, and a fourth spindle 4141 passes through the fourth bearing 4140. The two ends of the fourth spindle 4141 are respectively fixed to the third side plate 4100 and the fourth side plate 4101, thereby realizing the hinge connection between the second lower insert 414 and the second hinge seat 410.

[0037] In the embodiment shown in the accompanying drawings, the second hinge 40 is composed of two second hinge units 41 arranged side by side. In other embodiments, one second hinge unit 41 may be used to form the second hinge 40, or three or more second hinge units 41 arranged side by side may be used to form the second hinge 40.

[0038] In some preferred embodiments, the vertical rod 110 of the support frame 11 is designed as a hollow tubular structure. The rear end of the second upper connector 412 is inserted into the upper vertical rod 110 of the support frame 11 and fixed with fasteners such as screws. The rear end of the second lower connector 414 is inserted into the lower vertical rod 110 of the support frame 11 and fixed with fasteners such as screws. This plug-in connection method improves the stability of the connection between the second hinge 40 and the adjacent LED display module 10.

[0039] See Figure 1 As shown, in some embodiments, the foldable LED display screen disclosed in this application further includes a base 70 made of elastic material, with the lower end of the bottom LED display module 10 hinged to the rear end of the base 70 via a base hinge 80. Preferably, the base hinge 80 has the same structure as the first hinge 30, and a pulley 50 is hinged to its rear end, which is disposed on the guide rail 20. In this way, the LED display screen can be folded and stored on the base 70, which to some extent protects the LED display screen.

[0040] In summary, the foldable LED display disclosed in this application uses a pulley component hinged at the rear end of the first hinge, and the pulley component is slidably disposed on a guide rail located behind the LED display assembly, thereby playing a traction and limiting role for the LED display module. This not only ensures the stability of the LED display during the unfolding / folding process, but also improves the structural stability of the LED display when it is fully unfolded.

[0041] The above description is merely a preferred embodiment of this application and is not intended to limit the application in any way. Those skilled in the art can make various equivalent changes and improvements based on the above embodiments, and all equivalent changes or modifications made within the scope of the claims should fall within the protection scope of this application.

Claims

1. A foldable LED display screen, characterized in that, The foldable LED display screen includes: Multiple LED display modules are arranged vertically. Each LED display module includes a support frame and multiple LED light strips disposed on the front of the support frame. The multiple LED display modules are connected to each other alternately by a first hinge that can be folded forward and a second hinge that can be folded backward. A pulley is hinged to the rear end of the first hinge. At least one guide rail is vertically arranged behind the LED display module, and a row of pulleys are arranged on the guide rail and can slide up and down along the guide rail; The first hinge is composed of at least one first hinge unit, which includes a first hinge seat, a first upper insert hinge hinged to the upper front end of the first hinge seat and having a first upper sector gear formed at its rear end, and a first lower insert hinge hinged to the lower front end of the first hinge seat and having a first lower sector gear formed at its rear end. The first upper sector gear and the first lower sector gear mesh with each other. The front end of the first upper insert hinge is inserted into the support frame of the upper LED display module, and the front end of the first lower insert hinge is inserted into the support frame of the lower LED display module, and both are fixed with fasteners. The second hinge is composed of at least one second hinge unit, which includes a second hinge seat, a second upper insert hinged at the upper part of the second hinge seat with a second upper sector gear formed at its front end, and a second lower insert hinged at the lower part of the second hinge seat with a second lower sector gear formed at its front end. The second upper sector gear and the second lower sector gear mesh with each other. The rear end of the second upper insert is inserted into the support frame of the upper LED display module, and the rear end of the second lower insert is inserted into the support frame of the lower LED display module, and they are fixed with fasteners respectively.

2. The foldable LED display screen as described in claim 1, characterized in that, The pulley components are arranged in two rows, and two guide rails are provided to correspond to the arrangement of the two rows of pulley components.

3. The foldable LED display screen as described in claim 1, characterized in that, The pulley assembly includes a pulley seat and a plurality of pulleys rotatably mounted on the pulley seat. The front end of the pulley seat is hinged to the rear end of the first hinge. The plurality of pulleys are respectively disposed on the front and rear sides of the guide rail and sandwich the guide rail therebetween, so that the pulleys can slide up and down along the guide rail.

4. The foldable LED display screen as described in claim 3, characterized in that, The pulley seat includes a left side plate and a right side plate opposite to the left side plate. The two ends of the pulley shaft are fixedly connected to the left side plate and the right side plate respectively, and the pulley is rotatably disposed between the left side plate and the right side plate.

5. The foldable LED display screen as described in claim 4, characterized in that, The first hinge is composed of two first hinge units arranged in parallel. The front ends of the two first upper connectors are inserted together into the support frame of the upper LED display module, and the front ends of the two first lower connectors are inserted together into the support frame of the lower LED display module. They are fixed with fasteners respectively. The rear ends of the two first hinge units are placed between the left and right side plates of the pulley seat, and a pin is used to pass through the left side plate, the two first hinge units and the right side plate, thereby realizing the hinge connection between the first hinge and the pulley.

6. The foldable LED display screen as described in claim 1 or 5, characterized in that, The support frame includes two vertical rods distributed on the left and right and two horizontal rods fixedly connected to the vertical rods. The vertical rods are hollow tubular structures. The front end of the first upper connector is inserted into the vertical rod of the upper support frame, and the front end of the first lower connector is inserted into the vertical rod of the lower support frame.

7. The foldable LED display screen as described in claim 1 or 5, characterized in that, The first hinge seat includes a first side plate and a second side plate disposed opposite to the first side plate. The first upper insert is fitted with a first bearing, and a first spindle passes through the first bearing. The two ends of the first spindle are respectively fixed to the first side plate and the second side plate, thereby realizing the hinge connection between the first upper insert and the first hinge seat. The first lower insert is fitted with a second bearing, and a second spindle passes through the second bearing. The two ends of the second spindle are respectively fixed to the first side plate and the second side plate, thereby realizing the hinge connection between the first lower insert and the first hinge seat.

8. The foldable LED display screen as described in claim 1, characterized in that, The second hinge is composed of two second hinge units arranged side by side.

9. The foldable LED display screen as described in claim 1 or 8, characterized in that, The support frame includes two vertical rods distributed on the left and right and two horizontal rods fixedly connected to the vertical rods. The vertical rods are hollow tubular structures. The rear end of the second upper connector is inserted into the vertical rod of the upper support frame, and the rear end of the second lower connector is inserted into the vertical rod of the lower support frame.

10. The foldable LED display screen as described in claim 1 or 8, characterized in that, The second hinge seat includes a third side plate and a fourth side plate disposed opposite to the third side plate. The second upper insert is fitted with a third bearing, and a third mandrel passes through the third bearing. The two ends of the third mandrel are respectively fixed to the third side plate and the fourth side plate, thereby realizing the hinge between the second upper insert and the second hinge seat. The second lower insert is fitted with a fourth bearing, and a fourth mandrel passes through the fourth bearing. The two ends of the fourth mandrel are respectively fixed to the third side plate and the fourth side plate, thereby realizing the hinge between the second lower insert and the second hinge seat.

11. The foldable LED display screen as described in claim 1, characterized in that, The foldable LED display also includes a longitudinally arranged pull cord, which is fixed to the support frame of each LED display module.

12. The foldable LED display screen as described in claim 11, characterized in that, Each pull rope is fixed to the support frame by a plurality of pressure blocks. Each pressure block includes a lower pressure block fixed to the support frame and an upper pressure block covering the lower pressure block. The lower pressure block has a longitudinal lower receiving groove recessed on its front side, and the upper pressure block has a longitudinal upper receiving groove recessed on its back side. The pull rope is clamped between the lower receiving groove and the upper receiving groove, and the upper pressure block and the lower pressure block are screwed together with screws to achieve a fixed connection between the pull rope and the support frame.

13. The foldable LED display screen as described in claim 12, characterized in that, The support frame includes two vertical rods distributed to the left and right and two horizontal rods fixedly connected to the vertical rods. The vertical rods are hollow tubular structures. Each support frame is provided with two pressure blocks corresponding to each pull rope. The two pressure blocks are fixed to the upper and lower ends of the vertical rod respectively. The pull ropes are passed through the vertical rods and clamped and fixed by the pressure blocks. An opening is formed on the front of the vertical rod corresponding to each pressure block.

14. The foldable LED display screen as described in claim 1, characterized in that, The foldable LED display also includes a base made of elastic material, with the lower end of the bottom LED display module hinged to the rear end of the base via a base hinge.

15. The foldable LED display screen as described in claim 14, characterized in that, The base hinge has the same structure as the first hinge, and a pulley is hinged to its rear end. The pulley is located on the guide rail.

16. The foldable LED display screen as described in claim 1, characterized in that, The support frame includes two vertical bars distributed to the left and right and two horizontal bars fixedly connected to the vertical bars. Each horizontal bar has a slot at its front. The LED light strip has a locking block fixed at its upper and lower ends on its back. The two locking blocks are locked into the two slots and fixed.

17. The foldable LED display screen as described in claim 16, characterized in that, One of the crossbars is designed as a square groove structure.

18. The foldable LED display screen as described in claim 17, characterized in that, A longitudinal groove is provided in the middle of the support frame.

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