Arc-shaped LED display screen

Abstract

The invention relates to the technical field of LED display screens, in particular to an arc-shaped LED display screen which comprises a plurality of LED display screen units arranged in a matrix mode and further comprises a transverse locking device and a vertical locking structure. The transverse locking device comprises a hasp side assembly and a locking side assembly. The locking side assembly comprises a lock seat capable of being fixed to one end of the connecting piece, a lock sleeve and a locking assembly, first arc-shaped teeth arranged in an arc shape are arranged at the top of the lock seat, the lock sleeve is selectively arranged on the lock seat in a sliding and sleeving mode along a certain radian, and the locking assembly can be rotationally connected to the lock sleeve between a locking position and a releasing position. The locking assembly is provided with second arc-shaped teeth arranged in an arc shape. The LED display screen has the advantages that the locking assembly can rotate between the locking position and the releasing position, the angle of the lock sleeve is controlled to be adjusted so that the effect of adjusting the connecting angle of the two adjacent LED display units can be achieved, the U-shaped hasp rotates to the proper angle to be locked with the locking side assembly, and the connecting and locking effect with a certain radian is achieved.

Description

Technical Field

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

[0002] LED display splicing technology is a technology that combines multiple LED display units into a large screen to meet the needs of different environments and display requirements. LED display units are usually fixed and connected using LED display back frames and then assembled. With the development of the times, customers have more and more personalized needs for LED displays. Traditional flat LED displays can no longer meet the needs of current customers, and some LED displays that are differentiated from flat LED displays are needed, such as LED displays with a certain curvature.

[0003] In the prior art, angle locks or arc locks are usually used to connect LED display units to achieve a certain curvature of the LED display screen. Angle locks can be used to assemble LED display units at special angles, but the angle adjustment is limited. Arc locks can have a certain degree of angle adjustment, but the stability of the arc lock structure is not good.

[0004] Therefore, there is an urgent need for a connection structure that can adjust the curvature and has good structural stability to adapt to an LED display screen with a certain curvature. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a curved LED display screen, which solves the technical problems in the prior art that the connecting structure cannot adjust the curvature and has poor structural stability.

[0007] (II) Technical solution

[0008] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0009] An embodiment of the present invention provides an arc-shaped LED display screen, which includes a plurality of LED display screen units arranged in a matrix, and the arc-shaped LED display screen also includes a transverse locking device and a vertical locking structure; the transverse locking device includes a buckle side component and a locking side component for fixedly connecting two laterally adjacent LED display screen units; the buckle side component includes a fixed seat, and a U-shaped buckle rotatably connected to the fixed seat; the locking side component includes a lock seat that can be fixed to one end of a connecting member, a locking sleeve and a locking component, the top of the lock seat has first arc-shaped teeth arranged in an arc, the locking sleeve can be selectively slidably sleeved on the lock seat along a certain arc, the locking component can be rotatably connected to the lock sleeve between a locking position and a release position, and the locking The component has second arc-shaped teeth arranged in an arc shape; when the locking component is in the locking position, the second arc-shaped teeth are meshed with the first arc-shaped teeth, and the locking sleeve is locked with the locking seat; when the locking component is in the releasing position, the second arc-shaped teeth are disengaged from the first arc-shaped teeth, and the locking sleeve can slide along a certain arc relative to the locking seat; the U-shaped buckle can be rotated to be detachably connected with the locking sleeve to form a horizontally detachable connection between two adjacent LED display screen units; the vertical locking structure is arranged at the facing ends of the upper and lower adjacent LED display screen units to cooperate in forming a vertically detachable connection between the upper and lower adjacent LED display screen units; multiple LED display screen units are horizontally and vertically connected through the vertical locking structure and the horizontal locking device to form an arc-shaped LED display screen.

[0010] Optionally, the LED display screen unit includes an LED display box and a back frame, the back frame includes two vertical rods arranged at intervals, a crossbeam laterally connected between the two vertical rods, and two connecting parts; one end of the two connecting parts are respectively connected to the crossbeams in the back frames of two adjacent LED display screens, and the other ends of the two connecting parts are respectively connected to the locking seat and the fixing seat; the vertical locking structure is located at the upper and lower ends of the back frame and is fixedly connected to the vertical rods on both sides.

[0011] Optionally, a movable hole capable of inserting bolts and threadedly connecting with the LED display box and movable to both sides is provided in the middle of the crossbeam, and a fitting groove adapted to the connection position of the LED display box is provided on the opposite surface of the movable hole and the LED display box, and the crossbeam is designed to be hollow.

[0012] Optionally, a movable hole capable of inserting bolts and threadedly connecting with the LED display box and movable to both sides is provided in the middle of the crossbeam, and a fitting groove adapted to the connection position of the LED display box is provided on the opposite surface of the movable hole and the LED display box, and the crossbeam is designed to be hollow.

[0013] Optionally, the locking assembly includes a self-locking push button and a limit block; a plurality of first positioning beads are embedded in the bottom of the self-locking push button, the limit block is embedded in the top of the lock sleeve, the middle part of the limit block is rotatably supported on the lock sleeve, the second arc-shaped tooth is arranged at one end of the limit block, and the other end of the limit block is provided with a slide groove, and two groups of front and rear limit grooves are arranged on the limit block along the extension direction of the slide groove; the self-locking push button is slidably connected to the slide groove and can move along the slide groove between the locking position and the release position; the top of the lock sleeve is provided with a first positioning surface and a receiving groove for accommodating the limit block, and the first positioning surface and the receiving groove are adjacent to each other in the front-to-back direction; when the self-locking push button is in the locking position, the first positioning surface and the receiving groove are adjacent to each other in the front-to-back direction The bead head is embedded in the front limiting groove, and the bottom of the self-locking push button is in contact with the first positioning surface to limit the rotation of the limit block; the self-locking push button is pushed to move toward the rear end of the slide slot until the bottom of the self-locking push button is disengaged from the first positioning surface, the first positioning bead is disengaged from the front limiting groove, and moves to be embedded in the rear limiting groove, and the self-locking push button is in the release position where it can be pressed down, and when subjected to downward pressure, the self-locking push button drives the limit block to rotate so that the second arc-shaped tooth is disengaged from the first arc-shaped tooth; a second positioning surface is provided in the accommodating groove, and when subjected to downward pressure, the self-locking push button drives the limit block to rotate until it abuts the second positioning surface, and the second arc-shaped tooth is disengaged from the first arc-shaped tooth.

[0014] Optionally, the locking assembly also includes a first connecting shaft and a first torsion spring; the first connecting shaft passes through the limit block and the first torsion spring and is fixedly connected to the locking sleeve, one end of the free end of the first torsion spring abuts against the limit block, and the other end abuts against the first arc-shaped tooth; when the self-locking push button is in the release position, the self-locking push button is pressed down, the self-locking push button pushes the limit block to rotate, the limit block drives the first torsion spring to store energy, and the second arc-shaped tooth disengages from the first arc-shaped tooth; the pressure on the self-locking push button is released, the reset force of the first torsion spring drives the limit block to rotate in the opposite direction, and the second arc-shaped tooth engages with the first arc-shaped tooth.

[0015] Optionally, a second positioning bead is embedded in the top of the lock sleeve, and a plurality of positioning points arranged in an arc with the same interval angle are provided on the top of the lock seat. The positioning points are constructed as a structure of a through-ball-shaped hole, and the bead head of the second positioning bead can be selectively embedded in any positioning point; the lock sleeve and the limit block are also provided with a snap-fitting groove for detachable connection of the U-shaped buckle; a plurality of positioning blocks are also provided on both sides of the front end of the lock sleeve, and the positioning blocks are embedded with a third positioning bead; a positioning block groove that fits with the positioning block is provided on the fixed seat, and a positioning bead groove that fits with the third positioning bead is provided in the positioning block groove, so as to limit the relative displacement of the buckle side component and the locking side component.

[0016] Optionally, a sliding shaft and a stop portion are connected to the bottom of the self-locking push button, the sliding shaft can be slidably inserted into the sliding groove, the stop portion is connected to one end of the sliding shaft and is located in the accommodating groove, and the sliding groove is a U-shaped groove; when the self-locking push button is completely separated from the first positioning surface, the first positioning bead is embedded in the limiting groove on the rear side; when the stop portion stops at the side wall of the accommodating groove, the first positioning bead is embedded in the limiting groove on the front side.

[0017] Optionally, the buckle side component also includes a button member and a connecting rod; the button member includes a handle, a pressing part, a second torsion spring and a second connecting shaft, the pressing part is rotatably connected to the handle between the locked position and the free position through the second connecting shaft, the handle is rotatably connected to the fixed seat between the locked position and the free position through the connecting rod, the pressing part is passed through the handle, the front end size of the pressing part is larger than the hole passing through the handle, the second connecting shaft is inserted into the pressing part and the second torsion spring and is fixedly connected to the handle, and a third positioning surface is provided on the fixed seat; the U-shaped buckle includes a U-shaped connecting piece and a fixing pin, the fixing pin passes through the handle and is fixedly connected to the free end of the U-shaped connecting piece, the middle part of the fixing pin has a plurality of arc grooves arranged in a circle, and two fourth positioning beads are provided at both ends of the middle part of the handle corresponding to the fixing pin, and the fourth positioning beads can be embedded in the arc groove; the pressing part and the handle are in the locked position When the pressing part is in the free position, the handle can be rotated to select the locking position and the free position. When the pressing part is in the free position, the handle can be rotated to the free position, and the handle drives the U-shaped connecting piece to move backward, and the U-shaped connecting piece can rotate freely, and the U-shaped connecting piece can be placed in / out of the engaging groove. When the pressing part is pressed down, the second torsion spring drives the front end of the pressing part to return to its original position and rotate upward, and the rear end of the pressing part abuts against the third positioning surface, and the handle and the U-shaped connecting piece are fixed.

[0018] Optionally, the lock seat is provided with a first arc track and a first connecting pin fixedly connected to the lock sleeve, and the first connecting pin slides in the first arc track; the lock sleeve is provided with a second arc track and a second connecting pin fixedly connected to the lock seat, and the second connecting pin slides in the second arc track; the cooperation between the first arc track and the first connecting pin, and the cooperation between the second arc track and the second connecting pin, jointly limit the sliding of the lock sleeve along a certain arc relative to the lock seat; the position of the second connecting pin corresponding to the lock sleeve is provided with an angle value of a corresponding angle, and the adjustment angle value of the lock sleeve is the angle value displayed on the scale corresponding to the second connecting pin.

[0019] (III) Beneficial effects

[0020] The beneficial effects of the present invention are:

[0021] The present invention provides an arc-shaped LED display screen, which includes a plurality of LED display screen units arranged in a matrix, and the arc-shaped LED display screen also includes a transverse locking device and a vertical locking structure. The transverse locking device includes a buckle side component and a locking side component for fixedly connecting two adjacent LED display screen units. The buckle side component and the locking side component cooperate to form a relatively angled detachable connection connecting two adjacent LED display screen units; the vertical locking structure is arranged at the opposite ends of the upper and lower adjacent LED display screen units to cooperate to form a vertical detachable connection between the upper and lower adjacent LED display screen units. Thus, a plurality of LED display screen units are horizontally and vertically connected through the vertical locking structure and the transverse locking device to form an arc-shaped LED display screen. Wherein, the buckle side component includes a fixed seat, and a U-shaped buckle rotatably connected to the fixed seat. The locking side component includes a lock seat, a lock sleeve and a locking component that can be fixed on one end of the connecting member. The top of the lock seat has a first arc-shaped tooth arranged in an arc shape. The lock sleeve can be slidably mounted on the lock seat along a certain arc. The locking component can be rotatably connected to the lock sleeve between a locking position and a release position. The locking component has a second arc-shaped tooth arranged in an arc shape. When the locking component is in the locking position, the second arc-shaped tooth meshes with the first arc-shaped tooth, and the lock sleeve is locked with the lock seat. When the locking component is in the release position, the second arc-shaped tooth disengages from the first arc-shaped tooth, and the lock sleeve can slide along a certain arc relative to the lock seat. The U-shaped buckle can be rotated to be detachably connected with the lock sleeve to form a transverse detachable connection between two adjacent LED display screen units. Compared with the prior art, the locking component can be rotated between the locking position and the release position, and the angle adjustment of the lock sleeve is controlled to achieve the effect of adjusting the connection angle of two adjacent LED display units. The U-shaped buckle rotates to a suitable angle and locks with the locking side component, achieving a connection locking effect with a certain arc. At the same time, the overall structure is stable through the cooperation of the lock sleeve, the lock seat and the locking assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a partial schematic diagram of Example 1 of the curved LED display screen of the present invention, which includes a back frame, wherein, in order to clearly show the back frame, other parts of the curved LED display screen are not shown;

[0023] Figure 2 for Figure 1 An exploded view showing the cross beam and transverse locking device in the back frame;

[0024] Figure 3 for Figure 2 A front view of the transverse locking device is shown, wherein the buckle side component 1 and the locking side component 2 are in the locked position, and in order to show more components as clearly as possible, the U-shaped buckle part is partially transparent;

[0025] Figure 4 for Figure 3A front view of a locking side assembly in a transverse locking device is shown;

[0026] Figure 5 for Figure 4 The schematic cross-sectional view of the locking side assembly along the symmetry axis of the slideway is shown;

[0027] Figure 6 for Figure 3 An exploded view of the locking side assembly of the transverse locking device is shown;

[0028] Figure 7 for Figure 3 A front view of a buckle side assembly of a transverse locking device is shown;

[0029] Figure 8 for Figure 7 A side view of a buckle side component in a transverse locking device is shown, wherein in order to clearly show the positioning bead groove, components that may be obstructed are removed;

[0030] Fig. 9 for Figure 7 The schematic cross-sectional view of the buckle side assembly along the symmetry axis of the slide slot is shown;

[0031] Fig.10 for Figure 3 An exploded view of the buckle side assembly is shown;

[0032] Fig.11 The schematic cross-sectional view of the locking side component of the lateral locking device with adjustable curvature according to the following embodiment 2 along the symmetry axis of the slide slot, wherein the locking component is in the release position and the self-locking push button is in the pressed down state.

[0033] [Description of Reference Numerals]

[0034] 1: Horizontal locking device; 2: Vertical locking structure; 3: Buckle side assembly; 4: Locking side assembly; 5: Fixed seat; 6: U-shaped buckle; 7: Locking seat; 8: Locking sleeve; 9: Locking assembly; 10: First arc-shaped tooth; 11: Second arc-shaped tooth; 12: LED display box; 13: Back frame; 14: Vertical rod; 15: Crossbeam; 16: Connector; 17: Movable hole; 18: Fitting groove; 19: Threaded hole; 20: Self-locking push button; 21: Limit block; 22: First positioning bead; 23: Slide groove; 24: Limit groove; 25: First positioning surface; 26: Accommodating groove; 27: Second positioning surface; 2 8: first connecting shaft; 29: first torsion spring; 30: second positioning bead; 31: positioning point; 32: snap-fit ​​groove; 33: positioning block; 34: third positioning bead; 35: positioning block groove; 36: positioning bead groove; 37: sliding shaft; 38: stopper; 39: connecting rod; 40: handle; 41: pressing part; 42: second torsion spring; 43: second connecting shaft; 44: third positioning surface; 45: U-shaped connecting piece; 46: fixing pin; 47: arc groove; 48: first arc track; 49: first connecting pin; 50: second arc track; 51: second connecting pin; 52: fourth positioning bead. DETAILED DESCRIPTION

[0035] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below with reference to the accompanying drawings and through specific embodiments. Figure 1 The orientation is used as a reference.

[0036] Embodiment 1:

[0037] Reference Figures 1 to 10 The present embodiment provides a curved LED display screen. Specifically, the curved LED display screen of the present embodiment includes a plurality of LED display screen units arranged in a matrix (not shown in the drawings), a lateral locking device 1 and a vertical locking structure 2. The lateral locking device 1 includes a buckle side component 3 and a locking side component 4 for fixedly connecting two lateral adjacent LED display screen units (not shown in the drawings), as described in detail below.

[0038] The buckle side component 3 in this embodiment includes a fixing seat 5 that can be fixed on an LED display unit, and a U-shaped buckle 6 that is rotatably connected to the fixing seat 5. The locking side component 4 includes a lock seat 7 that can be fixed on another LED display unit, a lock sleeve 8 and a locking component 9. The top of the lock seat 7 has a first arc-shaped tooth 10 arranged in an arc shape. The lock sleeve 8 can be slidably mounted on the lock seat 7 along a certain arc. The locking component 9 can be rotatably connected to the lock sleeve 8 between the locking position and the release position. The locking component 9 has a second arc-shaped tooth 11 arranged in an arc shape. When the locking component 9 is in the locking position, the second arc-shaped tooth 11 is engaged with the first arc-shaped tooth 10, and the lock sleeve 8 is locked with the lock seat 7, and the structure is stable. When the locking component 9 is in the release position, the second arc-shaped tooth 11 is disengaged from the first arc-shaped tooth 10, and the lock sleeve 8 can slide along a certain arc relative to the lock seat 7. The U-shaped buckle 6 can be rotated to be detachably connected with the lock sleeve 8 to form an angled transverse detachable connection between two adjacent LED display screen units. The vertical locking structure 2 is arranged at the facing ends of the two upper and lower adjacent LED display screen units to cooperate in forming a vertically detachable connection between the two upper and lower adjacent LED display screen units. Multiple LED display screen units are connected horizontally and vertically through the vertical locking structure 2 and the horizontal locking device 1 to form an LED display screen. In this embodiment, the top of the lock seat 7 is the opposite side of the lock seat 7 away from the position where the lock seat 7 is fixed to the LED display unit, and can also be called the outer end of the lock seat 7. The angle adjustment of the lock sleeve 8 is achieved by sliding the lock sleeve 8 and the lock seat 7 along a certain arc, and the locking assembly 9 can move between the locking position and the release position to adjust the angle of the lock sleeve 8 and the locking state. Specifically, one end of the locking assembly 9 has a second arc-shaped tooth 11 arranged in an arc, and the top of the lock seat 7 has a first arc-shaped tooth 10 arranged in an arc. The first arc-shaped tooth 10 can be engaged and fixed with the second arc-shaped tooth 11, and the first arc-shaped tooth 10 can also be disengaged and separated from the second arc-shaped tooth 11. When the locking assembly 9 is rotated to the release position, the first arc-shaped tooth 11 is engaged and fixed with the second arc-shaped tooth 11. The teeth 10 and the second arc-shaped teeth 11 are in a state of being disengaged and separated, whereby the locking sleeve 8 is no longer fixed, so that the locking sleeve 8 can adjust its angle. The locking sleeve 8 is adjusted to the desired angle, and after adjusting to the desired angle, the locking device is moved to the locking position. The first arc-shaped teeth 10 and the second arc-shaped teeth 11 are in a state of being engaged and fixed, and the angle of the locking sleeve 8 is fixed. The U-shaped buckle 6 is rotated to the desired angle, and the connection between the U-shaped buckle 6 and the locking sleeve 8 can achieve a connection and locking effect of a certain arc, thus forming a certain arc structure of two adjacent LED display screen units. The lateral locking device 1 can be directly connected to the LED display screen unit, and the specific connection position can be the LED display box 12 in the LED display screen unit, or the back frame 13 connected to the LED display box 12. This embodiment is described below by taking the connection of the back frame 13 as an example.Therefore, the LED display screen can be directly connected to the horizontal locking device 1 to form an LED display screen with a certain arc, and the vertical locking structure 2 can detachably connect the adjacent LED display screen units in the upper and lower directions. Therefore, multiple LED display screen units are connected vertically through the vertical locking structure 2 and horizontally through the horizontal locking device 1 to form an LED display screen with an arc structure.

[0039] Specifically, in order to illustrate the internal connection mode of the LED display screen unit, the LED display screen unit includes an LED display box 12 and a back frame 13, and the back frame 13 includes two vertical bars 14 arranged at intervals, a crossbeam 15 horizontally connected between the two vertical bars 14, and two connecting pieces 16. One end of the two connecting pieces 16 is respectively connected to the crossbeams 15 in the back frames 13 of two adjacent LED display screens, and the other ends of the two connecting pieces 16 are respectively connected to the lock seat 7 and the fixing seat 5. The vertical locking structure 2 is located at the upper and lower ends of the back frame 13 and is fixedly connected to the vertical bars 14 on both sides. By setting the connecting piece 16, the lock seat 7 and the fixing seat 5 on both sides are connected to the crossbeam 15 and fixed at the fixed position of the vertical bar 14. The design of the crossbeam 15 and the vertical bar 14 is more stable, and the connection member 16 fixes the lock seat 7 and the fixing seat 5 to improve the strength of the connection structure of the LED display screen.

[0040] In order to achieve the connection of LED display boxes 12 of different sizes, a movable hole 17 that can be inserted with a bolt and threadedly connected to the LED display box 12 and can be moved to both sides is provided in the middle of the crossbeam 15. The movable hole 17 and the opposite surface of the LED display box 12 have a fitting groove 18 adapted to the connection position of the LED display box 12, and the crossbeam 15 is designed in a hollow shape. The movable hole 17 in the middle of the crossbeam 15 allows the LED display box 12 to be directly connected to the crossbeam 15, and the fitting groove 18 allows the shape of the connection position on the LED display box 12 to be embedded in the fitting groove 18, so that the connection is tighter, and the crossbeam 15 is in a hollow state. On the one hand, it can reduce the weight of the entire LED display screen, and on the other hand, the hollow design can allow the LED display screen to have a larger heat dissipation gap.

[0041] In order to achieve a better fixing effect of the connecting member 16, a semicircular groove is provided at one end of the connecting member 16, and a semicircular groove is provided at the end of the cross beam 15. The semicircular grooves on the connecting member 16 and the cross beam 15 enclose a channel for the vertical rod 14 to pass through. A fixing shaft is provided on the vertical rod 14 to penetrate the two semicircular grooves and the vertical rod 14. The fixing shaft is fixedly connected to the two semicircular grooves. A plurality of threaded holes 19 are provided at the other end of the connecting member 16, and the lock seat 7 is connected to the threaded hole 19 of the corresponding connecting member 16 by bolts, and the fixing seat 5 is connected to the threaded hole 19 of the corresponding connecting member 16 by bolts. The semicircular groove of the connecting member 16 and the semicircular groove of the cross beam 15 can ensure that the connecting member 16 does not move relative to the vertical rod 14 in the direction intersecting the vertical rod 14, and the fixed axis can ensure that the connecting member 16 does not move relative to the vertical rod 14 in the direction parallel to the vertical rod 14, so that the fixing effect is better, and the threaded hole 19 at the other end of the connecting member 16 is threadedly connected to the lock seat 7 or the fixing seat 5, which can ensure a good fixing effect between the connecting member 16 and the lock seat 7 or the fixing seat 5, and a magnet block is also provided on the connecting member 16, which is used to be adsorbed on it when connected to the LED display box 12, so as to provide positioning and stabilization effects when installing the bolts.

[0042] In order to enable the locking assembly 9 to move between the locking position and the releasing position and to allow the locking assembly 9 to have a self-locking function when in the locking position, the locking assembly 9 includes a self-locking push button 20 and a limit block 21 and the following corresponding specific designs.

[0043] Specifically, the top of the lock sleeve 8 is provided with a receiving groove 26 for receiving the limit block 21. The limit block 21 is embedded in the receiving groove 26 at the top of the lock sleeve 8, and the middle part of the limit block 21 is rotatably supported on the lock sleeve 8 through the first connecting shaft 28. The second arc-shaped tooth 11 is provided at one end of the limit block 21, and the other end of the limit block 21 is provided with a slide groove 23. The extension direction of the slide groove 23 is the front-to-back direction, that is, the arrangement direction of the buckle side component 3 and the locking side component 4 in actual use. The self-locking push button 20 can be connected to the slide groove 23 in a bidirectional sliding manner along the extension direction of the slide groove 23, so that the self-locking push button 20 can move between the locking position and the release position along the slide groove 23. The top of the lock sleeve 8 is also provided with a first positioning surface 25, and the first positioning surface 25 is arranged adjacent to the receiving groove 26 along the front-to-back direction.

[0044] At the same time, two groups of front and rear limiting grooves 24 are arranged on the limiting block 21 along the extension direction of the slide groove 23, and each group of limiting grooves 24 includes two limiting grooves 24, and the two limiting grooves 24 are located on both sides of the slide groove 23. Matchingly, two first positioning beads 22 are embedded at the bottom of the self-locking push button 20. The number of the first positioning beads 22 is the same as the number of the limiting grooves 24 in each group of limiting grooves 24.

[0045] When the self-locking push button 20 is in the locked position, the bead head of the first positioning bead 22 is embedded in the front limiting groove 24, and the bottom of the self-locking push button 20 is in contact with the first positioning surface 25. The first positioning surface 25 limits the rotation of the self-locking push button 20, thereby limiting the rotation of the limit block 21.

[0046] The self-locking push button 20 is pushed to move toward the rear end of the slide groove 23 until the bottom of the self-locking push button 20 is disengaged from the first positioning surface 25 and moves to the top of the corresponding receiving groove 26. The first positioning bead 22 is then disengaged from the front limiting groove 24 and moves to be embedded in the rear limiting groove 24. At this time, the self-locking push button 20 is in a release position that can be pressed down. When subjected to downward pressure, the self-locking push button 20 drives the limiting block 21 to rotate. Since the second arc-shaped tooth 11 and the self-locking push button 20 are at both ends of the hinged position of the limiting block 21 and the locking sleeve 8, the movement of the self-locking push button 20 toward the receiving groove 26 causes the end where the second arc-shaped tooth 11 is located to move outward, thereby causing the second arc-shaped tooth 11 to disengage from the first arc-shaped tooth 10. As described above, the self-locking push button 20 controls the movement of the locking assembly 9 between the locking position and the release position.

[0047] More specifically, the bottom of the self-locking push button 20 is provided with a plurality of cylindrical holes, the specific size of which is adapted to the first positioning bead 22. The first positioning bead 22 is a prior art, and the first positioning bead 22 includes a cylindrical shell, a spring and a bead head. The bead head extrusion spring is clamped at the opening of the cylindrical shell. When squeezed, the spring begins to store energy, and the bead head can retract. When no longer squeezed, the spring drives the bead head outward. The gap between the limit block 21 and the lock sleeve 8 is relatively small, and only allows the limit block 21 to rotate with a small movement. The outer shape of the limit block 21 is adapted to the lock sleeve 8, and the height is the same as that of the two sides of the lock sleeve 8, without obvious grooves, and the first positioning surface 25 is in a relatively flat state with the limit block 21. The first positioning surface 25 and the receiving groove 26 are arranged front and back, and the first positioning surface 25 is higher than the receiving groove 26. The front and rear ends of the slide groove 23 are provided with limiting grooves 24 corresponding to the first positioning bead 22, and the bead head of the first positioning bead 22 can be embedded in the limiting groove 24. When it is sunk into the limiting groove 24, the bead head of the first positioning bead 22 is partially embedded. When there is no external force, the limiting block 21 and the self-locking push button 20 are in a relatively fixed state, and the front and rear end limiting grooves 24 correspond to the self-locking push button 20 of the locking device in the locking position and the release position. When the self-locking push button 20 is in the locking position, the bead head of the first positioning bead 22 is embedded in the front limiting groove 24, and the bottom of the self-locking push button 20 is in contact with the first positioning surface 25. The self-locking push button 20 is immovable in the directions of upward, downward and away from the limiting block 21, and the locking sleeve 8 is fixed and the angle cannot be adjusted. The self-locking push button 20 is moved toward the rear end of the slide groove 23 by the external force, and the self-locking push button 20 gradually stops fitting with the first positioning surface 25, and the bead head of the first positioning bead 22 gradually separates from the limiting groove 24 at the front end. When the bead head of the first positioning bead 22 at the bottom of the self-locking push button 20 is embedded in the limiting groove 24 at the rear end of the slide groove 23, the self-locking push button 20 is completely separated from the first positioning surface 25, and the self-locking push button 20 is only fitted with the limiting block 21. At this moment, the self-locking push button 20 is in the release position where it can be pressed down.

[0048] In order to realize the reset of the locking assembly 9 after the locking assembly 9 realizes the function, the locking assembly 9 also includes a first torsion spring 29. The first connecting shaft 28 passes through the limit block 21 and the first torsion spring 29 and is fixedly connected to the locking sleeve 8. One end of the free end of the first torsion spring 29 abuts against the limit block 21, and the other end abuts against the first arc-shaped tooth 10. When the self-locking push button 20 is in the release position, the self-locking push button 20 is pressed down, and the self-locking push button 20 pushes the limit block 21 to rotate, and the limit block 21 drives the first torsion spring 29 to store energy, and the second arc-shaped tooth 11 is out of meshing with the first arc-shaped tooth 10. When the pressure on the self-locking push button 20 is released, the reset force of the first torsion spring 29 drives the limit block 21 to rotate in the opposite direction, and the second arc-shaped tooth 11 is meshed with the first arc-shaped tooth 10. The first connecting shaft 28 passes through the limit block 21 and the first torsion spring 29 and is fixedly connected to the lock sleeve 8. Specifically, the first torsion spring 29 is located in the middle of the limit block 21. The first connecting shaft 28 passes through one end of the limit block 21 and then passes through the first torsion spring 29, and then passes through the other end of the limit block 21. The first connecting shaft 28 is fixedly connected to the lock sleeve 8. The limit block 21 and the first torsion spring 29 can rotate around the first connecting shaft 28. One end of the free end of the first torsion spring 29 abuts against the limit block 21. The other end abuts against the first arc-shaped tooth 10. When the self-locking push button 20 is in the release position, the self-locking push button 20 is pressed down, and the self-locking push button 20 drives the limit block 21 to move. The free end of the first torsion spring 29 abutting against the limit block 21 is squeezed, and the first torsion spring 29 begins to store energy, and the limit block 21 begins to rotate. The tail of the limit block 21 tilts up, and the second arc-shaped tooth 11 tilts up, and the first arc-shaped tooth 10 and the second arc-shaped tooth 11 are out of meshing state, and the lock sleeve 8 can slide at this time. Release the pressure on the self-locking push button 20, and the reset force of the first torsion spring 29 will drive the bead head of the limit block 21 to rotate back to its original position, and the tail of the limit block 21 rotates downward, and the second arc-shaped tooth 11 at the tail of the limit block 21 falls and meshes with the first arc-shaped tooth 10, and the lock sleeve 8 is fixed to the lock seat 7 as a whole, and the lock sleeve 8 cannot rotate.

[0049] In order to realize that the self-locking push button 20 can be slidably connected to the slide groove 23 and can move along the slide groove 23 between the locking position and the release position, the bottom of the self-locking push button 20 is connected to a sliding shaft 37 and a stopper 38. The sliding shaft 37 is slidably arranged in the slide groove 23, connected to one end of the sliding shaft 37 and located in the accommodating groove 26, that is, the stopper 38 and the self-locking push button 20 are separated on the inside and outside sides of the limit block 21.

[0050] In this embodiment, the slide groove 23 is a U-shaped groove, the opening of the U-shaped groove faces the rear side, and the opening of the U-shaped groove faces outwards and corresponds to the side wall of the receiving groove 26. In Example 1, the specific manifestation of the self-locking button completely disengaging from the first positioning surface 25 is that the sliding shaft 37 stops at the closed end of the U-shaped groove, and the first positioning bead 22 is embedded in the limiting groove 24 on the rear side. When the stopper 38 stops at the side wall of the receiving groove 26, the first positioning bead 22 is embedded in the limiting groove 24 on the front side. When the first positioning bead 22 is embedded in the limiting groove 24, a sensory prompt can be provided to the user, such as a vibration feeling or a sound when embedded.

[0051] Specifically, the sliding shaft 37 and the stopper 38 can be formed in a variety of ways, and can be formed in any of the following ways:

[0052] Mode 1: The sliding shaft 37 and the stopper 38 are integrally formed with the self-locking push button 20 , for example, they are formed by injection molding together.

[0053] Mode 2: The sliding shaft 37 and the stopper 38 are the screw rod and the head of the same bolt, and the sliding shaft 37 is screwed into the threaded hole 19 at the bottom of the self-locking push button 20 .

[0054] Method three: the sliding shaft 37 is fixed to the bottom of the self-locking push button 20 , the sliding shaft 37 has an internal threaded hole 19 , a bolt is screwed into the internal threaded hole 19 , and the head of the bolt constitutes a stopper 38 .

[0055] In order to control the travel of the front and rear ends of the limit block 21 when the self-locking push button 20 is pressed down, a second positioning surface 27 is provided in the receiving groove 26. When subjected to downward pressure, the self-locking push button 20 drives the limit block 21 to rotate until the front end abuts the second positioning surface 27, and the second arc-shaped tooth 11 is disengaged from the first arc-shaped tooth 10. The pressing down of the self-locking push button 20 drives the limit block 21 to rotate. When the front end of the limit block 21 rotates to the second positioning surface 27, it cannot continue to rotate downward, and the second arc-shaped tooth 11 at the rear end of the limit block 21 just disengages from the first arc-shaped tooth 10 at this time, preventing the limit block 21 from rotating to the rear end abutting against the first arc-shaped tooth 10 on the lock seat 7, affecting the sliding effect of the lock sleeve 8.

[0056] In order to achieve a better fixing effect of the lock sleeve 8, a second positioning bead 30 is embedded on the top of the lock sleeve 8, and a plurality of positioning points 31 arranged in an arc with the same interval angle are provided on the top of the lock seat 7. The positioning points 31 are constructed as a through-ball belt-shaped hole structure, and the bead head of the second positioning bead 30 can be selectively embedded in any positioning point 31. There are a plurality of positioning points 31 on the lock seat 7 at the same angle. The second positioning bead 30 can be embedded in any positioning point 31 to achieve a certain strength of connection between the lock sleeve 8 and the lock seat 7. When the lock sleeve 8 is displaced on the lock seat 7, the second positioning bead 30 can be embedded at the positioning point 31 to provide a certain damping for the movement of the lock sleeve 8. When pushed by an external force, the second positioning bead 30 can be embedded in the next adjacent positioning point 31. The lock sleeve 8 and the limit block 21 are also provided with a buckling groove 32 for detachable connection of the U-shaped buckle 6. The U-shaped buckle 6 can cooperate with the buckling groove 32 on the lock sleeve 8 and the buckling groove 32 on the limit block 21 at the same time to achieve fixation. As a result, the matching surface with the U-shaped buckle 6 is greatly increased, thereby increasing the connection strength.

[0057] Specifically, the lock base 7 is provided with a first arc track 48 and a first connecting pin 49 fixedly connected to the lock sleeve 8, and the first connecting pin 49 slides in the first arc track 48. The lock sleeve 8 is provided with a second arc track 50 and a second connecting pin 51 fixedly connected to the lock base 7, and the second connecting pin 51 slides in the second arc track 50. In addition, the first arc track 48 and the second arc track 50 have the same curvature and bending direction. The cooperation between the first arc track 48 and the first connecting pin 49, and the cooperation between the second arc track 50 and the second connecting pin 51, jointly limit the lock sleeve 8 to slide along a certain arc relative to the lock base 7. The first connecting pin 49 penetrates the lock base 7 and is fixedly connected to the lock sleeve 8. The first connecting pin 49 is fixedly connected to the lock sleeve 8, that is, the lock sleeve 8 drives the first connecting pin 49 to slide in the first arc track 48, and the sliding distance is related to the length of the first arc track 48. In order to slide more smoothly, the first arc track 48 is similar in shape to the gap between the lock sleeve 8 and the lock base 7, and the sliding is smoother. Moreover, the lock sleeve 8 is provided with a second arc track 50 and a second connecting pin 51 fixedly connected to the lock seat 7. The second connecting pin 51 penetrates the lock sleeve 8 and the lock seat 7 and is fixedly connected to the lock seat 7 and slides in the second arc track 50. The second arc track 50 is constructed as an arc track groove structure penetrating the left and right sides of the lock sleeve 8. The setting of the double arc track limits the maximum sliding range a of the lock sleeve 8 using the arc track, and the fixing effect is better, the upper and lower ranges of movement are limited, and the lock sleeve 8 is prevented from being separated from the lock seat 7.

[0058] In order to specifically display the size of the adjustment angle of the lock sleeve 8, the position of the second connecting pin 51 corresponding to the lock sleeve 8 is provided with an angle value of the corresponding angle, and the adjustment angle value of the lock sleeve 8 is the angle value displayed on the scale corresponding to the second connecting pin 51. When the lock sleeve 8 slides along the arc track, the second connecting pin 51 displays a specific value on the side corresponding to the lock sleeve 8. When the angle is zero, the joint surface of the lock seat 7 and the buckle side component 3 is perpendicular to the ground. The lock sleeve 8 slides to both sides, which corresponds to positive and negative angles. In specific use on site, it is adjusted according to the required arc size for better effect.

[0059] In order to keep the buckle side component 3 and the locking side component 4 from being misaligned when fixed, a plurality of positioning blocks 33 are provided on both sides of the front end of the lock sleeve 8, and the positioning blocks 33 are embedded with third positioning beads 34. The fixing seat 5 is provided with a positioning block groove 35 that matches with the positioning block 33, and a positioning bead groove 36 that matches with the third positioning bead 34 is provided in the positioning block groove 35 to limit the relative displacement of the buckle side component 3 and the locking side component 4. The LED display units on both sides are restricted from displacement in the direction away from each other by the U-shaped buckle 6 and the buckle groove 32. If the contact surfaces of the buckle side component 3 and the locking side component 4 are two planes, sliding is easy to occur, and sliding will cause the buckle side component 3 and the locking side component 4 to be separated from each other. Therefore, a positioning block 33 and a third positioning bead 34 are set at the front end of the lock sleeve 8, and a positioning block groove 35 that matches the positioning block 33 is provided on the fixing seat 5. A positioning bead groove 36 that matches the third positioning bead 34 is provided in the positioning block groove 35. The positioning block 33 is inlaid with the positioning block groove 35, and the third positioning bead 34 is inlaid with the positioning bead groove 36. The fixing effect is better, and the buckle side component 3 and the locking side component 4 are prevented from being misaligned when fixed. In this embodiment, the second positioning bead 30 and the third positioning bead 34 have the same structure as the first positioning bead 22.

[0060] In addition, the locking sleeve 8 and the top of the fixing seat 5 are both provided with a through circular hole. The through circular hole can be fixed with a screw and a nut, or with a buckle, and can also provide a connection point for fixing the LED display unit. When it is necessary to strengthen the stability, a rope is used to connect the through circular hole to an object that cannot be displaced, so that the LED display screen is more stable.

[0061] Specifically, in order to achieve a better fixing effect of the buckle side component 3, the buckle side component 3 also includes a button member and a connecting rod 39. The button member includes a handle 40, a pressing portion 41, a second torsion spring 42 and a second connecting shaft 43. The pressing portion 41 is rotatably connected to the handle 40 between the locking position and the free position through the second connecting shaft 43. The handle 40 is rotatably connected to the fixing seat 5 between the locking position and the free position through the connecting rod 39. The pressing portion 41 is inserted into the handle 40, and the front end size of the pressing portion 41 is larger than the hole passing through the handle 40. The second connecting shaft 43 is inserted into the pressing portion 41 and the second torsion spring 42 and fixedly connected to the handle 40. The fixing seat 5 is provided with a third positioning surface 44. The U-shaped buckle 6 includes a U-shaped connector 45 and a fixing pin 46. The fixing pin 46 passes through the handle 40 and is fixedly connected to the free end of the U-shaped connector 45. The middle part of the fixing pin 46 has a plurality of arc grooves 47 arranged in a circumference. Two fourth positioning beads 52 are provided at both ends of the middle part of the handle 40 corresponding to the fixing pin 46. The fourth positioning beads 52 can be embedded in the arc groove 47. When the pressing portion 41 and the handle 40 are in the locking position, the rear end of the pressing portion 41 abuts against the third positioning surface 44, one free end of the second torsion spring 42 abuts against the front end of the pressing portion 41, and the other free end abuts against the arc groove 47. Pressing down the pressing part 41 drives the front end of the pressing part 41 to rotate downward, and the pressing part 41 drives the second torsion spring 42 to store energy, and the rear end of the pressing part 41 tilts up and disengages from the third positioning surface 44. The free end of the second torsion spring 42 abuts against the arc groove 47 and is squeezed to be parallel to the arc groove 47. The pressing part 41 is in a free position, and the handle 40 can rotate to select the locking position and the free position. When the pressing part 41 is in a free position, the handle 40 can rotate to a free position, and the handle 40 drives the U-shaped connector 45 to move backward, and the U-shaped connector 45 can rotate freely, and the U-shaped connector 45 can be placed in / out of the buckling groove 32. Release the downward pressure on the pressing part 41, and the second torsion spring 42 drives the front end of the pressing part 41 to return and rotate upward, and the rear end of the pressing part 41 abuts against the third positioning surface 44, and the handle 40 and the U-shaped connector 45 are fixed. The connecting rod 39 passes through the handle 40 and the fixing seat 5, and is finally fixed to the outside of the handle 40. The connecting rod 39 and the lock seat 7 may be integrally formed or bonded, and the handle 40 rotates relative to the connecting rod 39. Alternatively, the connecting rod 39 may be bonded to both sides of the handle 40, and the connecting rod 39 slides relative to the lock seat 7 to achieve the sliding of the handle 40. Alternatively, the connecting rod 39 may be fixed to the lock seat 7 and the handle 40 respectively, and the connecting rod 39 may rotate at the junction of the lock seat 7 and the handle 40.The button member is fixedly connected to the handle 40 by the second connecting shaft 43 passing through the pressing part 41 and the second torsion spring 42. Therefore, the pressing part 41 can rotate relative to the handle 40, that is, the pressing part 41 can rotate between the locking position and the free position. Similarly, the handle 40 can also rotate between the locking position and the free position. The pressing part 41 is embedded in the handle 40, and the front end size of the pressing part 41 is larger than the size of the hole passing through the handle 40. Therefore, the hole of the handle 40 can clamp the pressing part 41. The fixing pin 46 passes through the handle 40 and is fixedly connected to the U-shaped connecting member 45. The U-shaped connecting member 45 is rotatably connected to the handle 40. The fixing method of the fixing pin 46 and the U-shaped connecting member 45 can be bonding, bolt connection, or riveting. The middle part of the fixing pin 46 located in the handle 40 has a plurality of arc grooves 47 arranged in a circumference, and two fourth positioning beads 52 are embedded at both ends of the handle 40. The fourth positioning beads 52 are embedded in the arc grooves 47 to provide damping during rotation. When the handle 40 and the pressing part 41 are in the locked position, the rear end of the pressing part 41 abuts against the third positioning surface 44, that is, the pressing part 41 is fixed, and one free end of the second torsion spring 42 abuts against the front end of the pressing part 41, and the other free end abuts against the arc groove 47, that is, the handle 40 is also fixed. Pressing the pressing part 41 downward, the front end of the pressing part 41 rotates downward, driving the second torsion spring 42 to store energy, and the rear end of the pressing part 41 tilts upward, and the rear end of the pressing part 41 is separated from the third positioning surface 44. When the free end of the second torsion spring 42 abuts against the arc groove 47 and is squeezed to be parallel to the arc groove 47, the pressing part 41 rotates to the free position. At this time, the handle 40 can rotate. When the handle 40 rotates to the free position, the U-shaped connecting member 45 is driven to move backward, and the U-shaped connecting member 45 can rotate freely, that is, the U-shaped connecting member 45 can be placed in / out of the snap-fit ​​groove 32. The contact presses down on the pressing part 41, and the restoring force of the second torsion spring 42 drives the front end of the pressing part 41 to rotate upward and reset, and the rear end of the pressing part 41 returns to the third positioning surface 44. When the rear end of the pressing part 41 abuts against the third positioning surface 44, the handle 40 and the U-shaped connecting piece 45 are fixed.

[0062] In summary, compared with the prior art, the locking assembly 9 of this embodiment can rotate between the locking position and the releasing position, and the angle adjustment of the lock sleeve 8 can be controlled to achieve the effect of adjusting the connection angle of two adjacent LED display units. The U-shaped buckle 6 rotates to a suitable angle and locks with the locking side assembly 4, achieving a connection locking effect with a certain arc. At the same time, through the cooperation of the lock sleeve 8, the lock seat 7 and the locking assembly 9, the overall structure is stable, especially the split nesting setting of the lock sleeve 8 and the lock seat 7, and the multi-structure cooperation thereon, forming a function of sliding along the arc and self-locking in the selected position, the locking state is stable, and the safety performance of the overall locking device is improved. In addition, the buckle side assembly 3 and the locking side assembly 4 are each integrated into an integrated part, which can be easily installed on the LED display unit through their respective bases.

[0063] Embodiment 2:

[0064] Reference Fig.11 On the basis of Embodiment 1, the self-locking push button 20 can also be snapped onto the inclined surface between the first positioning surface 25 and the second positioning surface 27, and the inclined surface is inclined toward the rear, as described in detail below.

[0065] When the locking assembly 9 is in the released position, the self-locking push button 20 is in a depressible state. At this time, the self-locking push button 20 is pressed down, and the self-locking push button 20 drives the front end of the limit block 21 to rotate, and the rear end of the limit block 21 is tilted, and the second arc-shaped tooth 11 is disengaged from the first arc-shaped tooth 10. The self-locking push button 20 abuts against the middle inclined surface between the first positioning surface 25 and the second positioning surface 27. The self-locking push button 20 is pressed down to drive the front end of the limit block 21 to abut against the second positioning surface 27, and the self-locking push button 20 can be stuck on the inclined surface. At this time, the pressure on the self-locking push button 20 is released, and the self-locking push button 20 is still stuck on the inclined surface. There is no need to continue to press the self-locking push button 20 to achieve the locking of the sliding state of the lock sleeve 8.

[0066] The self-locking push button 20 is pushed to move backward, and the sliding shaft 37 abuts against the closed end of the slide groove 23. The self-locking push button 20 is disengaged from the blocking position with the inclined surface. The reset force of the first torsion spring 29 drives the front end of the limit block 21 to return to its original position and rotate upward. The rear end of the limit block 21 rotates downward, and the second arc-shaped tooth 11 is meshed with the first arc-shaped tooth 10, and the lock sleeve 8 is fixed.

[0067] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0068] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0069] In the present invention, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0070] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0071] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may alter, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A curved LED display screen, comprising a plurality of curved LED display screen units arranged in a matrix, characterized in that: It also includes a transverse locking device (1) and a vertical locking structure (2); The transverse locking device (1) comprises a buckle side component (3) and a locking side component (4) for fixedly connecting two laterally adjacent LED display screen units; The buckle side component (3) comprises a fixing seat (5) and a U-shaped buckle (6) rotatably connected to the fixing seat (5); The locking side component (4) comprises a lock seat (7) that can be fixed to one end of the connecting member (16), a lock sleeve (8) and a locking component (9); the top of the lock seat (7) has first arc-shaped teeth (10) arranged in an arc shape; the lock sleeve (8) can be selectively slidably sleeved on the lock seat (7) along a certain arc; the locking component (9) can be rotatably connected to the lock sleeve (8) between a locking position and a release position; and the locking component (9) has second arc-shaped teeth (11) arranged in an arc shape; When the locking assembly (9) is in the locking position, the second arc-shaped teeth (11) mesh with the first arc-shaped teeth (10), and the locking sleeve (8) is locked with the locking seat (7); When the locking assembly (9) is in the release position, the second arc-shaped tooth (11) is disengaged from the first arc-shaped tooth (10), and the locking sleeve (8) can slide along a certain arc relative to the locking seat (7); The U-shaped buckle (6) can be rotated to be detachably connected to the locking sleeve (8) so as to form a transverse detachable connection between two adjacent LED display screen units; The vertical locking structure (2) is arranged at the facing ends of two upper and lower adjacent LED display screen units to cooperate with the two upper and lower adjacent LED display screen units to form a vertically detachable connection; The plurality of LED display screen units are connected horizontally and vertically via the vertical locking structure (2) and the horizontal locking device (1) to form an LED display screen.

2. The curved LED display screen according to claim 1, characterized in that: The LED display screen unit comprises an LED display box (12) and a back frame (13), wherein the back frame (13) comprises two vertical rods (14) arranged at intervals, a crossbeam (15) transversely connected between the two vertical rods (14), and two connecting members (16); One end of the two connecting members (16) is respectively connected to the crossbeam (15) in the back frame (13) of two adjacent LED display screens, and the other end of the two connecting members (16) is respectively connected to the locking seat (7) and the fixing seat (5); The vertical locking structure (2) is located at the upper and lower ends of the back frame (13) and is fixedly connected to the vertical rods (14) on both sides.

3. The curved LED display screen according to claim 2, characterized in that: A movable hole (17) capable of being inserted with a bolt and threadedly connected to the LED display box and movable to both sides is provided in the middle of the crossbeam (15); a matching groove (18) adapted to the connection position of the LED display box is provided on the opposite surface of the movable hole (17) and the LED display box; and the crossbeam (15) is designed to be hollow.

4. The curved LED display screen according to claim 2, characterized in that: A semicircular groove is provided at one end of the connecting member (16), and a semicircular groove is provided at the end of the cross beam (15), and the semicircular groove on the connecting member (16) and the semicircular groove on the cross beam (15) are combined to form a channel for the vertical rod (14) to pass through; The vertical rod (14) is provided with a fixed shaft, and the fixed shaft passes through the groove walls of the two semicircular grooves at the same time; The other end of the connecting member (16) is provided with a plurality of threaded holes (19), and the locking seat (7) / the fixing seat (5) is connected to the threaded holes (19) of the connecting member (16) by means of bolts.

5. The curved LED display screen according to claim 1, characterized in that: The locking assembly (9) comprises a self-locking push button (20) and a limit block (21); A plurality of first positioning beads (22) are embedded at the bottom of the self-locking push button (20); the limit block (21) is embedded in the top of the lock sleeve (8); the middle part of the limit block (21) is rotatably supported on the lock sleeve (8); the second arc-shaped tooth (11) is arranged at one end of the limit block (21); a slide groove (23) is arranged at the other end of the limit block (21); and two groups of front and rear limit grooves (24) are arranged on the limit block (21) along the extension direction of the slide groove (23); The self-locking push button (20) is slidably connected to the slide groove (23) and can move along the slide groove (23) between a locking position and a releasing position; The top of the lock sleeve (8) is provided with a first positioning surface (25) and a receiving groove (26) for receiving the limit block (21), and the first positioning surface (25) and the receiving groove (26) are arranged adjacent to each other in the front-to-back direction; When the self-locking push button (20) is in the locking position, the head of the first positioning bead (22) is embedded in the limiting groove (24) at the front side, and the bottom of the self-locking push button (20) is in contact with the first positioning surface (25), thereby limiting the rotation of the limiting block (21); The self-locking push button (20) is pushed to move toward the rear end of the slide groove (23) until the bottom of the self-locking push button (20) is disengaged from the first positioning surface (25), the first positioning bead (22) is disengaged from the front limiting groove (24), and is moved to be embedded in the rear limiting groove (24), the self-locking push button (20) is in a release position capable of being pressed downward, and when subjected to downward pressure, the self-locking push button (20) drives the limiting block (21) to rotate, so that the second arc-shaped tooth (11) is disengaged from the first arc-shaped tooth (10); A second positioning surface (27) is provided in the receiving groove (26); when subjected to downward pressure, the self-locking push button (20) drives the limit block (21) to rotate to abut against the second positioning surface (27), and the second arc-shaped tooth (11) is disengaged from the first arc-shaped tooth (10).

6. The curved LED display screen according to claim 5, characterized in that: The locking assembly (9) further comprises a first connecting shaft (28) and a first torsion spring (29); The first connecting shaft (28) passes through the limit block (21) and the first torsion spring (29) and is fixedly connected to the locking sleeve (8); one end of the free end of the first torsion spring (29) abuts against the limit block (21), and the other end abuts against the first arc-shaped tooth (10); When the self-locking push button (20) is in the release position, the self-locking push button (20) is pressed down, the self-locking push button (20) pushes the limit block (21) to rotate, the limit block (21) drives the first torsion spring (29) to store energy, and the second arc-shaped tooth (11) is out of meshing state with the first arc-shaped tooth (10); When the pressure on the self-locking push button (20) is released, the reset force of the first torsion spring (29) drives the limit block (21) to rotate in the opposite direction, and the second arc-shaped tooth (11) meshes with the first arc-shaped tooth (10).

7. The curved LED display screen according to claim 5, characterized in that: A second positioning bead (30) is embedded on the top of the lock sleeve (8), and a plurality of positioning points (31) arranged in an arc at the same interval angle are provided on the top of the lock seat (7), and the positioning points (31) are constructed as a penetrating ball-shaped hole structure, and the bead head of the second positioning bead (30) can be selectively embedded in any of the positioning points (31); The locking sleeve (8) and the limiting block (21) are also provided with a buckling groove (32) for detachably connecting the U-shaped buckle (6); A plurality of positioning blocks (33) are also provided on both sides of the front end of the locking sleeve (8), and the positioning blocks (33) are embedded with third positioning beads (34); The fixing seat (5) is provided with a positioning block groove (35) matched with the positioning block (33), and a positioning bead groove (36) matched with the third positioning bead (34) is provided in the positioning block groove (35) to limit the relative displacement of the buckle side component (3) and the locking side component (4).

8. The curved LED display screen according to claim 5, characterized in that: The bottom of the self-locking push button (20) is connected with a sliding shaft (37) and a stopper (38), the sliding shaft (37) is slidably arranged in the sliding groove (23), the stopper (38) is connected to one end of the sliding shaft (37) and is located in the receiving groove (26), and the sliding groove (23) is a U-shaped groove; When the self-locking push button (20) is completely separated from the first positioning surface (25), the first positioning bead (22) is embedded in the limiting groove (24) at the rear side; When the stopper (38) stops at the side wall of the accommodating groove (26), the first positioning bead (22) is embedded in the limiting groove (24) on the front side.

9. The curved LED display screen according to claim 5, characterized in that: The buckle side component (3) also includes a button component and a connecting rod (39); The button component comprises a handle (40), a pressing portion (41), a second torsion spring (42) and a second connecting shaft (43); the pressing portion (41) is rotatably connected to the handle (40) between a locking position and a free position through the second connecting shaft (43); the handle (40) is rotatably connected to the fixing seat (5) between the locking position and the free position through the connecting rod (39); the pressing portion (41) is inserted into the handle (40); the front end size of the pressing portion (41) is larger than the hole passing through the handle (40); the second connecting shaft (43) is inserted into the pressing portion (41) and the second torsion spring (42) and fixedly connected to the handle (40); and a third positioning surface (44) is provided on the fixing seat (5); The U-shaped buckle (6) comprises a U-shaped connecting piece (45) and a fixing pin (46), wherein the fixing pin (46) passes through the handle (40) and is fixedly connected to the free end of the U-shaped connecting piece (45), and the middle part of the fixing pin (46) has a plurality of arc-shaped grooves (47) arranged in a circumferential manner, and two fourth positioning beads (52) are provided at two ends of the middle part of the handle (40) corresponding to the fixing pin (46), and the fourth positioning beads (52) can be embedded in the arc-shaped grooves (47); When the pressing portion (41) and the handle (40) are in the locking position, the rear end of the pressing portion (41) abuts against the third positioning surface (44), one free end of the second torsion spring (42) abuts against the front end of the pressing portion (41), and the other free end abuts against the arc-shaped groove (47); The pressing portion (41) is pressed downward to drive the front end of the pressing portion (41) to rotate downward, the pressing portion (41) drives the second torsion spring (42) to store energy, the rear end of the pressing portion (41) tilts up and disengages from the third positioning surface (44), the free end of the second torsion spring (42) abuts against the arc groove (47) and is squeezed to be parallel to the arc groove (47), the pressing portion (41) is in a free position, and the handle (40) can be rotated to select a locking position and a free position; When the pressing portion (41) is in the free position, the handle (40) can be rotated to the free position, the handle (40) drives the U-shaped connecting piece (45) to move backward, the U-shaped connecting piece (45) can be freely rotated, and the U-shaped connecting piece (45) can be placed in / detached from the buckling groove (32); The downward pressure on the pressing portion (41) is released, and the second torsion spring (42) drives the front end of the pressing portion (41) to return and rotate upward, and the rear end of the pressing portion (41) abuts against the third positioning surface (44), and the handle (40) and the U-shaped connecting piece (45) are fixed.

10. The curved LED display screen according to claim 5, characterized in that: The lock seat (7) is provided with a first arc-shaped track (48) and a first connecting pin (49) fixedly connected to the lock sleeve (8), and the first connecting pin (49) slides in the first arc-shaped track (48); The lock sleeve (8) is provided with a second arc-shaped track (50) and a second connecting pin (51) fixedly connected to the lock seat (7), and the second connecting pin (51) slides in the second arc-shaped track (50); The cooperation between the first arc track (48) and the first connecting pin (49), and the cooperation between the second arc track (50) and the second connecting pin (51), jointly limit the ability of the lock sleeve (8) to slide along a certain arc relative to the lock seat (7); The position of the second connecting pin (51) corresponding to the locking sleeve (8) is provided with an angle value of a corresponding angle, and the adjustment angle value of the locking sleeve (8) is the angle value displayed on the scale corresponding to the second connecting pin (51).

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