A curved LED display screen

Abstract

This invention relates to the field of LED display technology, and more particularly to an arc-shaped LED display screen. The arc-shaped LED display screen includes multiple LED display units arranged in a matrix, and also includes a horizontal locking device and a vertical locking structure. The horizontal locking device includes a latch-side assembly and a locking-side assembly. The locking-side assembly includes a lock seat, a lock sleeve, and a locking component that can be fixed to one end of a connector. The top of the lock seat has a first arc-shaped tooth arranged in an arc. The lock sleeve can be selectively slidably fitted onto the lock seat along a certain arc. The locking component is rotatably connected to the lock sleeve between a locked position and a released position, and the locking component has a second arc-shaped tooth arranged in an arc. Its advantage is that the locking component can rotate between the locked and released positions, controlling the angle adjustment of the lock sleeve to achieve the effect of adjusting the connection angle between two adjacent LED display units. The U-shaped latch rotates to a suitable angle and locks with the locking-side assembly, achieving a connection and locking effect with a certain arc.

Description

Technical Field

[0001] This invention relates to the field of LED display technology, and more particularly to a curved LED display. Background Technology

[0002] LED display splicing technology is a technique that combines multiple LED display units into a large screen to meet the needs of different environments and display requirements. LED display units are typically fixed together using an LED display back frame. With the development of technology, customers have increasingly personalized demands for LED displays. Traditional flat LED displays no longer meet current customer needs, requiring LED displays that differ from flat displays, such as those with a certain curvature.

[0003] In existing technologies, angle locks or arc locks are typically used to connect LED display units to achieve a certain curvature for the LED display screen. Angle locks can be used to assemble LED display units at specific angles, but the angle adjustment has limitations. Arc locks can provide a certain degree of angle adjustment, but the structural stability of arc locks is poor.

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

[0005] (a) Technical problems to be solved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides an arc-shaped LED display screen, which solves the technical problems of the connection structure not being able to adjust the curvature and the poor structural stability in the prior art.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the main technical solutions adopted by the present invention include:

[0009] This invention provides an arc-shaped LED display screen, comprising multiple LED display units arranged in a matrix. The arc-shaped LED display screen also includes a horizontal locking device and a vertical locking structure. The horizontal locking device includes a latch-side assembly and a locking-side assembly that fix two horizontally adjacent LED display units. The latch-side assembly includes a fixing base and a U-shaped latch rotatably connected to the fixing base. The locking-side assembly includes a locking seat, a locking sleeve, and a locking component that can be fixed to one end of a connector. The top of the locking seat has first arc-shaped teeth arranged in an arc. The locking sleeve can be selectively slidably fitted onto the locking seat along a certain arc. The locking component is rotatably connected to the locking sleeve between a locked position and a released position, thus locking the LED display unit. The component has a second arc-shaped tooth arranged in an arc shape; when the locking component is in the locked position, the second arc-shaped tooth engages with the first arc-shaped tooth, and the lock sleeve is locked to the lock seat; when the locking component is in the released position, the second arc-shaped tooth disengages from the first arc-shaped tooth, and the lock sleeve can slide relative to the lock seat along a certain arc; the U-shaped buckle can be rotated to be detachably connected to the lock sleeve to form a horizontally detachable connection between two adjacent LED display units; the vertical locking structure is set at the opposing ends of two adjacent LED display units to cooperate in forming a vertically detachable connection between the two adjacent LED display units; multiple LED display units are horizontally and vertically connected through the vertical locking structure and the horizontal locking device to form an arc-shaped LED display.

[0010] Optionally, the LED display unit includes an LED display cabinet and a back frame. The back frame includes two vertical bars spaced apart, a horizontal beam connected between the two vertical bars, and two connectors. One end of each connector is connected to the horizontal beam in the back frame of two adjacent LED displays, and the other end of each connector is connected to a lock seat and a fixing seat, respectively. The vertical locking structure is located at the upper and lower ends of the back frame and is fixedly connected to the vertical bars on both sides.

[0011] Optionally, the crossbeam has a movable hole in the middle that can be used to insert bolts and connect to the LED display cabinet threadedly, and can move to both sides. The movable hole has a matching groove on the opposite surface of the LED display cabinet that is adapted to the connection position of the LED display cabinet. The crossbeam has a hollow design.

[0012] Optionally, the crossbeam has a movable hole in the middle that can be used to insert bolts and connect to the LED display cabinet threadedly, and can move to both sides. The movable hole has a matching groove on the opposite surface of the LED display cabinet that is adapted to the connection position of the LED display cabinet. The crossbeam has a hollow design.

[0013] Optionally, the locking assembly includes a self-locking push button and a limiting block; the bottom of the self-locking push button is embedded with a plurality of first positioning beads, the limiting block is embedded in the top of the lock sleeve, the middle part of the limiting block is rotatably supported on the lock sleeve, a second arc-shaped tooth is provided at one end of the limiting block, the other end of the limiting block is provided with a sliding groove, and two sets of front and rear limiting grooves are provided on the limiting block along the extension direction of the sliding groove; the self-locking push button is slidably connected to the sliding groove and can move along the sliding groove between the locked position and the released position; the top of the lock sleeve is provided with a first positioning surface and a receiving groove for accommodating the limiting block, the first positioning surface and the receiving groove are adjacent to each other in the front and rear direction; when the self-locking push button is in the locked position, the first positioning... The first positioning bead is embedded in the front limiting groove, and the bottom of the self-locking push button is in contact with the first positioning surface, restricting the rotation of the limiting block. Pushing the self-locking push button to the rear end of the slide groove until the bottom of the self-locking push button disengages from the first positioning surface, the first positioning bead disengages from the front limiting groove, moves to be embedded in the rear limiting groove, and the self-locking push button is in the release position that can be pressed down. When subjected to downward pressure, the self-locking push button drives the limiting block to rotate, so that the second arc-shaped tooth disengages from the first arc-shaped tooth. A second positioning surface is provided in the receiving groove. When subjected to downward pressure, the self-locking push button drives the limiting block to rotate to abut against the second positioning surface, and the second arc-shaped tooth disengages from the first arc-shaped tooth.

[0014] Optionally, the locking assembly further includes a first connecting shaft and a first torsion spring; the first connecting shaft passes through the limiting 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 limiting block, and the other end abuts against the first arc-shaped tooth; when the self-locking push button is in the release position, pressing down the self-locking push button pushes the limiting block to rotate, the limiting block drives the first torsion spring to store energy, and the second arc-shaped tooth disengages from the first arc-shaped tooth; when the pressure on the self-locking push button is released, the restoring force of the first torsion spring drives the limiting 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 number 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 through ball-shaped holes, and the bead head of the second positioning bead can be selectively embedded in any positioning point. The lock sleeve and the limiting block are also provided with a fastening groove for detachable connection of the U-shaped latch. A number of positioning blocks are also provided on both sides of the front end of the lock sleeve, and a third positioning bead is embedded in the positioning block. The fixing seat is provided with a positioning block groove that fits with the positioning block, and a positioning bead groove that fits with the third positioning bead is provided in the positioning block groove to limit the relative misalignment of the latch side assembly and the locking side assembly.

[0016] Optionally, the bottom of the self-locking push button is connected to a sliding shaft and a stop. The sliding shaft is slidably inserted into the slide groove, and the stop is connected to one end of the sliding shaft and located in the receiving groove. The slide groove is a U-shaped groove. When the self-locking push button is completely disengaged from the first positioning surface, the first positioning bead is embedded in the limiting groove on the rear side. When the stop stops against the side wall of the receiving groove, the first positioning bead is embedded in the limiting groove on the front side.

[0017] Optionally, the latch side assembly further includes a button and a connecting rod; the button includes a handle, a pressing part, a second torsion spring, and a second connecting shaft. The pressing part is rotatably connected to the handle via the second connecting shaft between the locked and free positions. The handle is rotatably connected to the fixed seat via the connecting rod between the locked and free positions. The pressing part passes through the handle, and the front end of the pressing part is larger than the hole through the handle. The second connecting shaft is inserted into the pressing part and the second torsion spring and fixedly connected to the handle. The fixed seat is provided with a third positioning surface. The U-shaped latch includes a U-shaped connector and a fixing pin. The fixing pin passes through the handle and is fixedly connected to the free end of the U-shaped connector. The middle part of the fixing pin has several arc-shaped grooves arranged in a circle. Two fourth positioning beads are provided inside the handle corresponding to the two ends of the middle part of the fixing pin. The fourth positioning beads can be embedded in the arc-shaped grooves. The pressing part and the handle are located in the locked position. When pressed, the rear end of the pressing part abuts against the third positioning surface, one free end of the second torsion spring abuts against the front end of the pressing part, and the other free end abuts against the arc-shaped groove; pressing down on the pressing part drives the front end of the pressing part to rotate downwards, the pressing part drives the second torsion spring to store energy, the rear end of the pressing part tilts up and disengages from the third positioning surface, the free end of the second torsion spring abutting against the arc-shaped groove is squeezed to be parallel to the arc-shaped groove, the pressing part is in the free position, and the handle can rotate to select the locked position and the free position; when the pressing part is in the free position, the handle can rotate to the free position, the handle drives the U-shaped connector to move backwards, the U-shaped connector can rotate freely, and the U-shaped connector can be placed / disengaged in the fastening groove; when the pressing part is released, the second torsion spring drives the front end of the pressing part to reset and rotate upwards, the rear end of the pressing part abuts against the third positioning surface, and the handle and the U-shaped connector are fixed.

[0018] Optionally, the lock seat is provided with a first arc-shaped track and a first connecting pin fixedly connected to the lock sleeve, the first connecting pin sliding within the first arc-shaped track; the lock sleeve is provided with a second arc-shaped track and a second connecting pin fixedly connected to the lock seat, the second connecting pin sliding within the second arc-shaped track; the cooperation of the first arc-shaped track and the first connecting pin, as well as the cooperation of the second arc-shaped track and the second connecting pin, together limit the sliding of the lock sleeve relative to the lock seat along a certain arc; the second connecting pin is provided with an angle value corresponding to the position of the lock sleeve, 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 this invention are:

[0021] This invention discloses an arc-shaped LED display screen, comprising multiple LED display screen units arranged in a matrix. The arc-shaped LED display screen also includes a horizontal locking device and a vertical locking structure. The horizontal locking device includes a latch-side assembly and a locking-side assembly that fix two adjacent LED display screen units together. The latch-side assembly and the locking-side assembly cooperate to form a detachable connection at an angle between the two adjacent LED display screen units. The vertical locking structure is disposed at the opposing ends of two adjacent LED display screen units, thereby forming a vertically detachable connection between the two adjacent LED display screen units. Thus, 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. The latch-side assembly includes a fixing base and a U-shaped latch rotatably connected to the fixing base. The locking side assembly includes a lock seat, a lock sleeve, and a locking component that can be fixed to one end of the connector. The top of the lock seat has a first arc-shaped tooth arranged in an arc. The lock sleeve can be selectively slidably fitted onto the lock seat along a certain arc. The locking component is rotatably connected to the lock sleeve between a locked position and a released position. The locking component has a second arc-shaped tooth arranged in an arc. When the locking component is in the locked position, the second arc-shaped tooth engages with the first arc-shaped tooth, locking the lock sleeve and the lock seat. When the locking component is in the released position, the second arc-shaped tooth disengages from the first arc-shaped tooth, allowing the lock sleeve to slide relative to the lock seat along a certain arc. The U-shaped latch can rotate to be detachably connected to the lock sleeve, forming a laterally detachable connection between two adjacent LED display units. Compared to the prior art, the locking component can rotate between the locked and released positions, controlling the angle adjustment of the lock sleeve to achieve the effect of adjusting the connection angle between two adjacent LED display units. The U-shaped latch rotates to a suitable angle and locks with the locking side assembly, achieving a connection locking effect with a certain arc. Meanwhile, the overall structure is stable through the cooperation of the lock sleeve, lock seat, and locking components. Attached Figure Description

[0022] Figure 1 This is a partial schematic diagram of Embodiment 1 of the curved LED display screen of the present invention, which includes a back frame. Other parts of the curved LED display screen are not shown in order to clearly show the back frame.

[0023] Figure 2 for Figure 1 An exploded view of the crossbeam and transverse locking device in the back frame is shown;

[0024] Figure 3 for Figure 2 A front view of the lateral locking device is shown, in which the latch-side assembly 1 and the locking-side assembly 2 are in the locked position. To show as many parts as possible clearly, the U-shaped latch is partially transparent.

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

[0026] Figure 5 for Figure 4 The diagram shows a cross-sectional view of the locking side assembly along the axis of symmetry of the slide groove.

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

[0028] Figure 7 for Figure 3 A front view of the latch-side assembly in the lateral locking device is shown;

[0029] Figure 8 for Figure 7 The side view of the latch-side assembly in the lateral locking device is shown, in which parts that might be obscured are removed in order to clearly show the positioning bead groove;

[0030] Figure 9 for Figure 7 The diagram shows a cross-sectional view of the latch-side assembly along the axis of symmetry of the slide groove.

[0031] Figure 10 for Figure 3 An exploded view of the latch-side assembly is shown.

[0032] Figure 11 The following is a schematic cross-sectional view of the locking side assembly of the adjustable arc transverse locking device according to Embodiment 2, along the axis of symmetry of the slide groove, wherein the locking assembly is in the released position and the self-locking push button is in the pressed state.

[0033] [Explanation of Labels in the Attached Image]

[0034] 1: Horizontal locking device; 2: Vertical locking structure; 3: Hook-and-loop side assembly; 4: Locking side assembly; 5: Fixing base; 6: U-shaped hook-and-loop; 7: Lock seat; 8: Lock sleeve; 9: Locking assembly; 10: First arc-shaped tooth; 11: Second arc-shaped tooth; 12: LED display cabinet; 13: Back frame; 14: Vertical rod; 15: Horizontal beam; 16: Connector; 17: Movable hole; 18: Fitting groove; 19: Threaded hole; 20: Self-locking push button; 21: Limiting block; 22: First positioning bead; 23: Slide groove; 24: Limiting groove; 25: First positioning surface; 26: Receiving 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: Stop part; 39: Connecting rod; 40: Handle; 41: Pressing part; 42: Second torsion spring; 43: Second connecting shaft; 44: Third positioning surface; 45: U-shaped connector; 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 Implementation

[0035] To better explain and facilitate understanding of the present invention, a detailed description of the invention is provided below with reference to the accompanying drawings and specific embodiments. In this document, directional terms such as "upper," "lower," "left," "right," "front," and "rear" are used interchangeably. Figure 1 The orientation is used as a reference.

[0036] Example 1:

[0037] Reference Figures 1 to 10 This embodiment provides an arc-shaped LED display screen. Specifically, the arc-shaped LED display screen of this embodiment includes multiple LED display screen units (not shown in the figure) arranged in a matrix, and also includes a horizontal locking device 1 and a vertical locking structure 2. The horizontal locking device 1 includes a latching side component 3 and a locking side component 4 that fix two horizontally adjacent LED display screen units (not shown in the figure) to each other, as detailed below.

[0038] The latch-side assembly 3 in this embodiment includes a mounting base 5 that can be fixed to an LED display unit, and a U-shaped latch 6 rotatably connected to the mounting base 5. The locking-side assembly 4 includes a locking seat 7, a locking sleeve 8, and a locking component 9 that can be fixed to another LED display unit. The top of the locking seat 7 has first arc-shaped teeth 10 arranged in an arc. The locking sleeve 8 can be selectively slidably fitted onto the locking seat 7 along a certain arc. The locking component 9 can be rotatably connected to the locking sleeve 8 between a locked position and a released position. The locking component 9 has second arc-shaped teeth 11 arranged in an arc. When the locking component 9 is in the locked position, the second arc-shaped teeth 11 engage with the first arc-shaped teeth 10, locking the locking sleeve 8 and the locking seat 7, resulting in a stable structure. When the locking component 9 is in the released position, the second arc-shaped teeth 11 disengage from the first arc-shaped teeth 10, allowing the locking sleeve 8 to slide relative to the locking seat 7 along a certain arc. The U-shaped latch 6 can be rotated to be detachably connected to the locking sleeve 8, forming an angled, laterally detachable connection between two adjacent LED display units. The vertical locking structure 2 is set at the opposite ends of two adjacent LED display units to form a vertically detachable connection between them. Multiple LED display units are connected horizontally and vertically through the vertical locking structure 2 and the horizontal locking device 1 to form an LED display. In this embodiment, the top of the locking seat 7 is the opposite side of the locking seat 7 from the position where it is fixed to the LED display unit, which can also be called the outer end of the locking seat 7. The angle adjustment of the locking sleeve 8 is achieved by the locking sleeve 8 and the locking seat 7 sliding along a certain arc, and the locking component 9 can move between the locked position and the released position to adjust and lock the angle of the locking sleeve 8. Specifically, one end of the locking component 9 has a second arc-shaped tooth 11 arranged in an arc, and the top of the locking seat 7 has a first arc-shaped tooth 10 arranged in an arc. The first arc-shaped tooth 10 can engage and fix with the second arc-shaped tooth 11, and the first arc-shaped tooth 10 can also disengage from the second arc-shaped tooth 11 and separate. When the locking component 9 is rotated to the released position, the first arc-shaped tooth 10... When tooth 10 and the second arc-shaped tooth 11 are disengaged and separated, the locking sleeve 8 is no longer fixed, allowing the locking sleeve 8 to be adjusted at the desired angle. After adjusting the locking sleeve 8 to the desired angle, the locking device is moved to the locked position, where the first arc-shaped tooth 10 and the second arc-shaped tooth 11 are engaged and fixed, and the angle of the locking sleeve 8 is fixed. When the U-shaped buckle 6 rotates to the desired angle, the connection between the U-shaped buckle 6 and the locking sleeve 8 achieves a certain arc-shaped connection and locking effect, thus forming a certain arc-shaped structure between two adjacent LED display units. The horizontal locking device 1 can be directly connected to the LED display unit. The specific connection location can be the LED display cabinet 12 in the LED display unit, or the back frame 13 connected to the LED display cabinet 12. In this embodiment, the connection to the back frame 13 is described as an example below.Therefore, the LED display screen can be directly connected to the horizontal locking device 1 to form an LED display screen with a certain curvature. The vertical locking structure 2 can detachably connect adjacent LED display screen units in the vertical direction. Thus, multiple LED display screen units are connected to form an arc-shaped LED display screen through the vertical connection of the vertical locking structure 2 and the horizontal connection of the horizontal locking device 1.

[0039] Specifically, to illustrate the internal connection method of the LED display unit, the LED display unit includes an LED display cabinet 12 and a back frame 13. The back frame 13 includes two spaced vertical rods 14, a horizontal beam 15 connecting the two vertical rods 14, and two connectors 16. One end of each connector 16 is connected to the horizontal beam 15 in the back frame 13 of two adjacent LED displays, and the other end of each connector 16 is connected to a locking seat 7 and a fixing seat 5, respectively. 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. By setting the connectors 16 to connect the locking seats 7 and fixing seats 5 on both sides to the horizontal beam 15 and fix them in the fixed position of the vertical rods 14, the design of the horizontal beam 15 and the vertical rods 14 provides stronger stability, and the connectors 16 fixing the locking seats 7 and fixing seats 5 can improve the connection structure strength of the LED display.

[0040] To facilitate the connection of LED display cabinets 12 of different sizes, the crossbeam 15 has a movable hole 17 in the middle, which allows for the insertion of bolts and threaded connection with the LED display cabinet 12, and can move to both sides. The opposite surface of the movable hole 17 and the LED display cabinet 12 has a fitting groove 18 adapted to the connection position of the LED display cabinet 12. The crossbeam 15 has a hollow design. The movable hole 17 in the middle of the crossbeam 15 allows the LED display cabinet 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 cabinet 12 to fit into the fitting groove 18, making the connection tighter. The hollow design of the crossbeam 15 reduces the overall weight of the LED display screen and allows for larger heat dissipation gaps in the LED display screen.

[0041] To achieve better fixation of the connector 16, one end of the connector 16 is provided with a semi-circular groove, and the end of the crossbeam 15 is also provided with a semi-circular groove. The semi-circular grooves on the connector 16 and the crossbeam 15 together form a channel for the vertical rod 14 to pass through. The vertical rod 14 is provided with a fixing shaft that passes through the two semi-circular grooves. The fixing shaft is fixedly connected to the two semi-circular grooves. The other end of the connector 16 is provided with multiple threaded holes 19. The locking seat 7 is connected to the threaded hole 19 of the corresponding connector 16 by bolts, and the fixing seat 5 is connected to the threaded hole 19 of the corresponding connector 16 by bolts. The semi-circular grooves of the connector 16 and the crossbeam 15 together ensure that the connector 16 does not shift relative to the vertical rod 14 in the direction of intersection with the vertical rod 14. The fixed shaft ensures that the connector 16 does not shift relative to the vertical rod 14 in the direction parallel to the vertical rod 14, resulting in a better fixing effect. The threaded hole 19 at the other end of the connector 16 is threaded to the lock seat 7 or the fixed seat 5, which ensures a good fixing effect between the connector 16 and the lock seat 7 or the fixed seat 5. In addition, the connector 16 is also equipped with a magnet, which is used to attract the LED display cabinet 12 when connected, and provides a positioning and stabilizing effect when installing bolts.

[0042] In order to enable the locking component 9 to move between the locked position and the released position and to enable the locking component 9 to have a self-locking function when it is in the locked position, the locking component 9 includes a self-locking push button 20 and a limit block 21, as well as the following corresponding specific design.

[0043] Specifically, the top of the lock sleeve 8 is provided with a receiving groove 26 for accommodating the limiting block 21. The limiting block 21 is embedded in the receiving groove 26 on the top of the lock sleeve 8, and the middle part of the limiting block 21 is rotatably supported on the lock sleeve 8 through the first connecting shaft 28. A second arc-shaped tooth 11 is provided at one end of the limiting block 21, and the other end of the limiting block 21 is provided with a sliding groove 23. The extension direction of the sliding groove 23 is the front-back direction, which is also the arrangement direction of the latch side assembly 3 and the locking side assembly 4 in actual use. The self-locking push button 20 is slidably connected to the sliding groove 23 in both directions along the extension direction of the sliding groove 23, so that the self-locking push button 20 can move between the locked position and the released position along the sliding groove 23. The top of the lock sleeve 8 is also provided with a first positioning surface 25, which is adjacent to the receiving groove 26 in the front-back direction.

[0044] Meanwhile, the limiting block 21 is provided with two sets of limiting grooves 24 along the extension direction of the slide groove 23. Each set of limiting grooves 24 includes two limiting grooves 24, which are located on both sides of the slide groove 23. Correspondingly, the bottom of the self-locking push button 20 is embedded with two first positioning beads 22. The number of first positioning beads 22 is the same as the number of limiting grooves 24 in each set of limiting grooves 24.

[0045] When the self-locking push button 20 is in the locked position, the 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 restricts the rotation of the self-locking push button 20, thereby restricting the rotation of the limiting block 21.

[0046] The self-locking push button 20 is pushed towards the rear end of the slide groove 23 until its bottom disengages from the first positioning surface 25 and moves above the corresponding receiving groove 26. The first positioning bead 22 then disengages from the front limiting groove 24 and moves into the rear limiting groove 24. At this time, the self-locking push button 20 is in the release position where it can be pressed down. When subjected to downward pressure, the self-locking push button 20 drives the limiting block 21 to rotate. Because the second arc-shaped tooth 11 and the self-locking push button 20 are at the hinged ends of the limiting block 21 and the locking sleeve 8, the movement of the self-locking push button 20 towards the receiving groove 26 causes the end of the second arc-shaped tooth 11 to move outward, thereby disengaging the second arc-shaped tooth 11 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 locked and released positions.

[0047] More specifically, the bottom of the self-locking push button 20 has several cylindrical holes, the size of which is adapted to the first positioning bead 22. The first positioning bead 22 is existing technology and includes a cylindrical shell, a spring, and a bead head. The bead head compresses the spring and is locked at the opening of the cylindrical shell. When compressed, the spring begins to store energy, and the bead head can retract. When no longer compressed, the spring drives the bead head outward. The gap between the limiting block 21 and the locking sleeve 8 is relatively small, allowing only a small rotation of the limiting block 21. The outer shape of the limiting block 21 is adapted to the locking sleeve 8, and the height is the same as the two sides of the locking sleeve 8. There is no obvious groove. The first positioning surface 25 is in a relatively flat state with the limiting block 21. The first positioning surface 25 and the receiving groove 26 are arranged one after the other, 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. The bead head of the first positioning bead 22 can be embedded in the limiting groove 24. When it is embedded in the limiting groove 24, the bead head of the first positioning bead 22 is embedded. Without the action of external force, the limiting block 21 and the self-locking push button 20 are in a relatively fixed state. The front and rear limiting grooves 24 correspond to the locking position and the release position of the self-locking push button 20 of the locking device. 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 upward, downward and away from the limiting block 21 directions. The locking sleeve 8 is fixed and the angle cannot be adjusted. When the self-locking push button 20 is subjected to external force, it moves toward the rear end of the slide groove 23. The self-locking push button 20 gradually stops being in contact with the first positioning surface 25, and the bead head of the first positioning bead 22 gradually separates from the front limiting groove 24. When the bead head of the first positioning bead 22 at the bottom of the self-locking push button 20 is inserted into the limiting groove 24 at the rear end of the slide groove 23, the self-locking push button 20 completely separates from the first positioning surface 25, and the self-locking push button 20 is only in contact with the limiting block 21. At this moment, the self-locking push button 20 is in the release position that can be pressed down.

[0048] To ensure the locking assembly 9 resets after functioning, it also includes a first torsion spring 29. A first connecting shaft 28 passes through the limiting 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 limiting block 21, and the other end abuts against the first arc-shaped tooth 10. When the self-locking push button 20 is in the released position, pressing down on it causes the limiting block 21 to rotate. The limiting block 21 then drives the first torsion spring 29 to store energy, disengaging the second arc-shaped tooth 11 from the first arc-shaped tooth 10. Releasing the pressure on the self-locking push button 20 causes the first torsion spring 29 to rotate in the opposite direction, engaging the second arc-shaped tooth 11 with the first arc-shaped tooth 10. The first connecting shaft 28 passes through the limiting block 21 and the first torsion spring 29 and is fixedly connected to the locking sleeve 8. Specifically, the first torsion spring 29 is located in the middle of the limiting block 21. The first connecting shaft 28 passes through one end of the limiting block 21, then through the first torsion spring 29, and then through the other end of the limiting block 21. The first connecting shaft 28 is fixedly connected to the locking sleeve 8. The limiting block 21 and the first torsion spring 29 can rotate around the first connecting shaft 28. One free end of the first torsion spring 29 abuts against the limiting block 21. The other end abuts against the first arc-shaped tooth 10. When the self-locking push button 20 is in the released position, pressing down the self-locking push button 20 drives the limiting block 21 to move. The free end of the first torsion spring 29, which abuts against the limiting block 21, is compressed, and the first torsion spring 29 begins to store energy. The limiting block 21 begins to rotate, and the tail of the limiting block 21 lifts up. Then the second arc-shaped tooth 11 lifts up, and the first arc-shaped tooth 10 and the second arc-shaped tooth 11 disengage. At this time, the lock sleeve 8 can slide. Releasing the pressure on the self-locking push button 20, the restoring force of the first torsion spring 29 will drive the bead head of the limiting block 21 to rotate back to its original position. Then the tail of the limiting block 21 rotates downward, and the second arc-shaped tooth 11 at the tail of the limiting block 21 falls and engages with the first arc-shaped tooth 10. The lock sleeve 8 and the lock seat 7 are fixed together, and the lock sleeve 8 cannot rotate.

[0049] In order to enable the self-locking push button 20 to be slidably connected to the slide groove 23 and to move between the locked and released positions along the slide groove 23, the bottom of the self-locking push button 20 is connected to a sliding shaft 37 and a stop part 38. The sliding shaft 37 is slidably inserted into the slide groove 23, and one end of the sliding shaft 37 is connected and located in the receiving groove 26. That is, the stop part 38 and the self-locking push button 20 are located on the inner and outer sides of the limiting block 21, respectively.

[0050] In this embodiment, the slide 23 is a U-shaped groove with its opening facing rearward and corresponding outward to the side wall of the receiving groove 26. In Embodiment 1, the self-locking button completely disengages from the first positioning surface 25 when the sliding shaft 37 stops at the closed end of the U-shaped groove, and the first positioning bead 22 is embedded in the rear limiting groove 24. When the stop part 38 stops at the side wall of the receiving groove 26, the first positioning bead 22 is embedded in the front limiting groove 24. When the first positioning bead 22 is embedded in the limiting groove 24, it can provide the user with sensory cues, such as a vibration or a sound when it is embedded.

[0051] Specifically, the sliding shaft 37 and the stop portion 38 can be formed in various ways, and can be formed in any of the following ways:

[0052] Option 1: The sliding shaft 37 and the stop part 38 are integrally molded with the self-locking push button 20, for example, they are injection molded together.

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

[0054] Method 3: 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 forms a stop part 38.

[0055] To control the travel of the front and rear ends of the limiting 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 limiting block 21 to rotate until the front end abuts against the second positioning surface 27, and the second arc-shaped tooth 11 disengages from the first arc-shaped tooth 10. The downward pressure of the self-locking push button 20 drives the limiting block 21 to rotate. When the front end of the limiting block 21 rotates to the second positioning surface 27, it cannot continue to rotate downwards. At this time, the second arc-shaped tooth 11 at the rear end of the limiting block 21 just disengages from the first arc-shaped tooth 10, preventing the limiting block 21 from rotating to the rear end abutting against the first arc-shaped tooth 10 on the lock seat 7, which would affect the sliding effect of the lock sleeve 8.

[0056] To achieve better fixation of the lock sleeve 8, a second positioning bead 30 is embedded in the top of the lock sleeve 8. The top of the lock seat 7 has several positioning points 31 arranged in an arc with equal intervals. Each positioning point 31 has a through-hole ball-shaped structure. The bead head of the second positioning bead 30 can be selectively embedded into any one of these positioning points 31. The lock seat 7 has several positioning points 31 spaced at equal intervals. Embedding the second positioning bead 30 into any one of these positioning points achieves a connection of a certain strength between the lock sleeve 8 and the lock seat 7. When the lock sleeve 8 moves on the lock seat 7, the second positioning bead 30 can be embedded at a positioning point 31 to provide some damping for the movement of the lock sleeve 8. When pushed by an external force, the second positioning bead 30 can be embedded into the next adjacent positioning point 31. The lock sleeve 8 and the limiting block 21 are also provided with a fastening groove 32 for the detachable connection of the U-shaped buckle 6. The U-shaped buckle 6 can simultaneously engage with the fastening groove 32 on both the lock sleeve 8 and the limiting block 21 to achieve fixation. As a result, the mating surface with the U-shaped buckle 6 is greatly increased, thus increasing the connection strength.

[0057] Specifically, the lock base 7 is provided with a first arc-shaped track 48 and a first connecting pin 49 fixedly connected to the lock sleeve 8. The first connecting pin 49 slides within 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 base 7. The second connecting pin 51 slides within the second arc-shaped track 50. Furthermore, the arc and bending direction of the first arc-shaped track 48 and the second arc-shaped track 50 are the same. The cooperation between the first arc-shaped track 48 and the first connecting pin 49, and the cooperation between the second arc-shaped track 50 and the second connecting pin 51, together limit the sliding of the lock sleeve 8 relative to the lock base 7 along a certain arc. The first connecting pin 49 passes through 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 within the first arc-shaped track 48. The sliding distance is related to the length of the first arc-shaped track 48. For smoother sliding, the shape of the first arc-shaped track 48 is similar to the gap between the lock sleeve 8 and the lock base 7, making the sliding smoother. Furthermore, the lock sleeve 8 is equipped with a second arc-shaped track 50 and a second connecting pin 51 for fixed connection with the lock seat 7. The second connecting pin 51 passes through the lock sleeve 8 and the lock seat 7, is fixedly connected to the lock seat 7, and slides within the second arc-shaped track 50. The second arc-shaped track 50 is constructed as an arc-shaped track groove structure that passes through both the left and right sides of the lock sleeve 8. The double arc-shaped track setting limits the maximum sliding range 'a' of the lock sleeve 8 using arc-shaped tracks, and the fixing effect is better. The vertical movement is restricted, preventing the lock sleeve 8 from detaching from the lock seat 7.

[0058] To clearly display the adjustment angle of the locking sleeve 8, the second connecting pin 51 has a corresponding angle value at its position corresponding to the locking sleeve 8. The adjustment angle value of the locking sleeve 8 is displayed on the scale corresponding to the second connecting pin 51. When the locking sleeve 8 slides along the arc-shaped track, the second connecting pin 51 displays a specific value on the side of the locking sleeve 8. When the angle is zero, the mating surface between the lock seat 7 and the latch side assembly 3 is perpendicular to the ground. Sliding the locking sleeve 8 to both sides corresponds to positive and negative angles. In actual field use, adjusting according to the required arc size will yield better results.

[0059] To prevent misalignment between the latch-side assembly 3 and the locking-side assembly 4 when they are fixed, several positioning blocks 33 are provided on both sides of the front end of the lock sleeve 8. The positioning blocks 33 are fitted with third positioning beads 34. The fixing base 5 is provided with positioning block grooves 35 that fit with the positioning blocks 33. In the positioning block grooves 35, there are positioning bead grooves 36 that fit with the third positioning beads 34, so as to limit the relative misalignment between the latch-side assembly 3 and the locking-side assembly 4. The LED display units on both sides are restricted from moving away from each other by the U-shaped latch 6 and the fastening groove 32. If the contact surfaces of the latch-side component 3 and the locking-side component 4 are two planes, they are prone to sliding, which would cause the latch-side component 3 and the locking-side component 4 to disengage. Therefore, a positioning block 33 and a third positioning bead 34 are provided at the front end of the locking sleeve 8. The fixing base 5 is provided with a positioning block groove 35 that fits with the positioning block 33, and a positioning bead groove 36 that fits with the third positioning bead 34 is provided in the positioning block groove 35. The positioning block 33 and the positioning block groove 35 are embedded, and the third positioning bead 34 and the positioning bead groove 36 are embedded, which improves the fixing effect and prevents the latch-side component 3 and the locking-side component 4 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, both the locking sleeve 8 and the fixing base 5 have through circular holes at their tops. The through circular holes can be used for fixing with screws and nuts, or with clips. They can also provide connection points for fixing the LED display unit. When more stability is needed, ropes can be used to connect the through circular holes and fix it to an immovable object, making the LED display screen more stable.

[0061] Specifically, to achieve a better fixing effect for the latch-side assembly 3, the latch-side assembly 3 also includes a button and a connecting rod 39. The button includes a handle 40, a pressing part 41, a second torsion spring 42, and a second connecting shaft 43. The pressing part 41 is rotatably connected to the handle 40 between the locked position and the free position via the second connecting shaft 43. The handle 40 is rotatably connected to the fixing base 5 between the locked position and the free position via the connecting rod 39. The pressing part 41 passes through the handle 40, and the front end of the pressing part 41 is larger than the hole through the handle 40. The second connecting shaft 43 is inserted into the pressing part 41 and the second torsion spring 42 and fixedly connected to the handle 40. The fixing base 5 is provided with a third positioning surface 44. The U-shaped latch 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 several arc-shaped grooves 47 arranged in a circle. The handle 40 has two fourth positioning beads 52 corresponding to the two ends of the middle part of the fixing pin 46. The fourth positioning beads 52 can be embedded in the arc-shaped grooves 47. When the pressing part 41 and the handle 40 are in the locked position, the rear end of the pressing part 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 part 41, and the other free end abuts against the arc-shaped grooves 47. Pressing down on the pressing part 41 causes its front end to rotate downwards. The pressing part 41 then drives the second torsion spring 42 to store energy, causing its rear end to lift and disengage from the third positioning surface 44. The free end of the second torsion spring 42, which abuts against the arc-shaped groove 47, is compressed to be parallel to the groove 47, placing the pressing part 41 in a free position. The handle 40 can then rotate to select between the locked and free positions. When the pressing part 41 is in the free position, the handle 40 can rotate to this position, driving the U-shaped connector 45 to move rearwards. The U-shaped connector 45 can rotate freely and can be placed / disengaged from the fastening groove 32. Releasing the pressure on the pressing part 41 causes the second torsion spring 42 to drive the front end of the pressing part 41 to return to its original position and rotate upwards. The rear end of the pressing part 41 then abuts against the third positioning surface 44, fixing the handle 40 and the U-shaped connector 45 in place. 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. Alternatively, the connecting rod 39 can be integrally formed with the lock seat 7 or bonded together, allowing the handle 40 to rotate relative to the connecting rod 39. Alternatively, the connecting rod 39 can be bonded to both sides of the handle 40, allowing the connecting rod 39 to slide relative to the lock seat 7, thus enabling the handle 40 to slide. Alternatively, the connecting rod 39 can be fixed to both the lock seat 7 and the handle 40, and can rotate at the junction of the lock seat 7 and the handle 40.The button 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 locked position and the free position. Similarly, the handle 40 can also rotate between the locked 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 lock the pressing part 41. The fixing pin 46 passes through the handle 40 and is fixedly connected to the U-shaped connector 45. The U-shaped connector 45 is rotatably connected to the handle 40. The fixing pin 46 and the U-shaped connector 45 can be fixed by adhesive, bolt, or riveting. The fixing pin 46 has several arc-shaped grooves 47 arranged in a circle in the middle part inside the handle 40. Two fourth positioning beads 52 are embedded in the inner ends of the handle 40. The fourth positioning beads 52 are embedded in the arc-shaped grooves 47 and can 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, while 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-shaped groove 47, that is, the handle 40 is also fixed. When the pressing part 41 is pressed down, 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 disengages from the third positioning surface 44. When the free end of the second torsion spring 42 abutting against the arc-shaped groove 47 is squeezed to be parallel to the arc-shaped 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, it drives the U-shaped connector 45 to move backward. The U-shaped connector 45 can rotate freely, that is, the U-shaped connector 45 can be placed / displaced from the fastening groove 32. When the contact presses down on the pressing part 41, the restoring force of the second torsion spring 42 drives the front end of the pressing part 41 to rotate upward and reset. The rear end of the pressing part 41 will return 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 connector 45 are fixed.

[0062] In summary, compared to existing technologies, the locking component 9 of this embodiment can rotate between the locked and released positions, controlling the angle adjustment of the locking sleeve 8 to achieve the effect of adjusting the connection angle between two adjacent LED display units. The U-shaped latch 6 rotates to a suitable angle and locks with the locking side component 4, achieving a connection locking effect with a certain curvature. Simultaneously, the cooperation of the locking sleeve 8, locking seat 7, and locking component 9 ensures overall structural stability. In particular, the separate nested arrangement of the locking sleeve 8 and locking seat 7, with its multiple structural components, creates a function that simultaneously allows for arc-shaped sliding and self-locking at a selected position, ensuring stable locking and improving the overall safety performance of the locking device. Furthermore, the latch side component 3 and the locking side component 4 are each integrated into a single unit, easily mounted on the LED display unit via their respective bases.

[0063] Example 2:

[0064] Reference Figure 11 Based on Embodiment 1, the self-locking push button 20 can also be engaged with the inclined surface between the first positioning surface 25 and the second positioning surface 27, which is inclined to the rear, as detailed below.

[0065] When the locking assembly 9 is in the released position, the self-locking push button 20 is in the pressable state. At this time, pressing down the self-locking push button 20 drives the front end of the limiting block 21 to rotate, and the rear end of the limiting block 21 tilts up. The second arc-shaped tooth 11 disengages from the first arc-shaped tooth 10, and the self-locking push button 20 abuts against the middle inclined surface between the first positioning surface 25 and the second positioning surface 27. Pressing down the self-locking push button 20 drives the front end of the limiting block 21 to abut against the second positioning surface 27, and the self-locking push button 20 can be locked on the inclined surface. At this time, releasing the pressure on the self-locking push button 20, the self-locking push button 20 is still locked on the inclined surface. It is no longer necessary to continuously press down the self-locking push button 20 to achieve the locking of the sliding state of the lock sleeve 8.

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

[0067] In the description of this invention, it should be understood that 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 indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0068] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0069] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," or "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0070] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0071] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An arc-shaped LED display screen, the LED display screen comprising a plurality of arc-shaped LED display screen units arranged in a matrix, characterized in that, It also includes a lateral locking device (1) and a vertical locking structure (2); The LED display unit includes an LED display cabinet (12) and a back frame (13). The back frame (13) includes two vertical bars (14) spaced apart, a crossbeam (15) horizontally connected between the two vertical bars (14), and two connectors (16). The lateral locking device (1) includes a latch side assembly (3) and a locking side assembly (4) that are fixedly connected to two adjacent LED display units in the lateral direction. The buckle side assembly (3) includes a base (5) and a U-shaped buckle (6) rotatably connected to the base (5). The locking side assembly (4) includes a lock seat (7), a lock sleeve (8), and a locking assembly (9) that can be fixed to one end of the connector (16). 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 selectively slidably fitted onto the lock seat (7) along a certain arc. The locking assembly (9) is rotatably connected to the lock sleeve (8) between the locked position and the released position. The locking assembly (9) has a second arc-shaped tooth (11) arranged in an arc shape. When the locking assembly (9) is in the locked position, the second arc-shaped tooth (11) engages with the first arc-shaped tooth (10), and the lock sleeve (8) locks with the lock seat (7); When the locking assembly (9) is in the released position, the second arc-shaped tooth (11) disengages from the first arc-shaped tooth (10), and the lock sleeve (8) can slide relative to the lock seat (7) along a certain arc. The U-shaped buckle (6) can be rotated to be detachably connected to the locking sleeve (8) to form a lateral detachable connection between two adjacent LED display units; The vertical locking structure (2) is set at the opposite ends of two adjacent LED display units to form a vertically detachable connection between the two adjacent LED display units. The multiple LED display units are connected horizontally and vertically through the vertical locking structure (2) and the horizontal locking device (1) to form an LED display screen; The locking assembly (9) includes a self-locking push button (20) and a limiting block (21). The bottom of the self-locking push button (20) is embedded with several first positioning beads (22), the limiting block (21) is embedded in the top of the lock sleeve (8), the middle part of the limiting block (21) is rotatably supported on the lock sleeve (8), the second arc-shaped tooth (11) is provided at one end of the limiting block (21), the other end of the limiting block (21) is provided with a sliding groove (23), and two sets of front and rear limiting grooves (24) are provided on the limiting block (21) along the extension direction of the sliding groove (23). The self-locking push button (20) is slidably connected to the slide (23) and can move along the slide (23) between the locked position and the released position.

2. The curved LED display screen as described in claim 1, characterized in that, One end of each of the two connectors (16) is connected to the crossbeam (15) in the back frame (13) of the two adjacent LED displays, and the other end of each of the two connectors (16) is 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 rods (14) on both sides.

3. The curved LED display screen as described in claim 1, characterized in that, The crossbeam (15) has a movable hole (17) in the middle that can be used to insert bolts and thread them to the LED display box and move to both sides. The movable hole (17) has a matching groove (18) on the opposite surface of the LED display box that is adapted to the connection position of the LED display box. The crossbeam (15) has a hollow design.

4. The curved LED display screen as described in claim 1, characterized in that, One end of the connector (16) is provided with a semi-circular groove, and the end of the crossbeam (15) is provided with a semi-circular groove. The semi-circular groove on the connector (16) and the semi-circular groove on the crossbeam (15) together form a channel for the vertical rod (14) to pass through. The vertical rod (14) is provided with a fixed shaft, which passes through the groove walls of both semicircular grooves at the same time; The other end of the connector (16) is provided with a plurality of threaded holes (19), and the lock seat (7) / the fixing seat (5) is connected to the threaded holes (19) of the connector (16) by bolts.

5. The curved LED display screen as described in claim 1, characterized in that, The top of the lock sleeve (8) is provided with a first positioning surface (25) and a receiving groove (26) for accommodating the limiting block (21), and the first positioning surface (25) and the receiving groove (26) are arranged adjacent to each other in the front-back direction; When the self-locking push button (20) is in the locked position, the 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), restricting the rotation of the limiting block (21); Push the self-locking push button (20) to move to 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 moves to be embedded in the rear limiting groove (24), the self-locking push button (20) is in the 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 so that the second arc-shaped tooth (11) disengages 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 limiting block (21) to rotate to abut against the second positioning surface (27), and the second arc-shaped tooth (11) disengages from the first arc-shaped tooth (10).

6. The curved LED display screen as described in claim 1, characterized in that, The locking assembly (9) also includes a first connecting shaft (28) and a first torsion spring (29); The first connecting shaft (28) passes through the limiting 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 limiting 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, pressing down the self-locking push button (20) pushes the limiting block (21) to rotate, the limiting block (21) drives the first torsion spring (29) to store energy, and the second arc-shaped tooth (11) disengages from the first arc-shaped tooth (10). When the pressure on the self-locking push button (20) is released, the restoring force of the first torsion spring (29) drives the limiting 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 as described in claim 1, characterized in that, A second positioning bead (30) is embedded in the top of the lock sleeve (8), and a number 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 point (31) is constructed as a through ball-shaped hole, and the bead head of the second positioning bead (30) can be selectively embedded in any of the positioning points (31). The lock sleeve (8) and the limiting block (21) are also provided with a fastening groove (32) for the U-shaped buckle (6) to be detachably connected. The front end of the lock sleeve (8) is provided with several positioning blocks (33), and the positioning blocks (33) are embedded with a third positioning bead (34). The fixing seat (5) is provided with a positioning block groove (35) that fits with the positioning block (33), and a positioning bead groove (36) that fits with the third positioning bead (34) is provided in the positioning block groove (35) to limit the relative misalignment of the buckle side assembly (3) and the locking side assembly (4).

8. The curved LED display screen as described in claim 5, characterized in that, The bottom of the self-locking push button (20) is connected to a sliding shaft (37) and a stop (38). The sliding shaft (37) is slidably inserted into the slide groove (23). The stop (38) is connected to one end of the sliding shaft (37) and located in the receiving groove (26). The slide groove (23) is a U-shaped groove. When the self-locking push button (20) is completely disengaged from the first positioning surface (25), the first positioning bead (22) is embedded in the limiting groove (24) on the rear side. When the stop (38) stops against the side wall of the receiving groove (26), the first positioning bead (22) is embedded in the front limiting groove (24).

9. The curved LED display screen as described in claim 7, characterized in that, The buckle side assembly (3) also includes a button and a connecting rod (39). The button component includes a handle (40), a pressing part (41), a second torsion spring (42), and a second connecting shaft (43). The pressing part (41) is rotatably connected to the handle (40) between the locked position and the free position via the second connecting shaft (43). The handle (40) is rotatably connected to the fixed seat (5) between the locked position and the free position via the connecting rod (39). The pressing part (41) passes through the handle (40), and the front end of the pressing part (41) is larger than the hole passing through the handle (40). The second connecting shaft (43) is inserted into the pressing part (41) and the second torsion spring (42) and fixedly connected to the handle (40). The fixed 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 several arc-shaped grooves (47) arranged in a circle. The handle (40) is provided with two fourth positioning beads (52) at both ends corresponding to the middle part of the fixing pin (46). The fourth positioning beads (52) can be embedded in the arc-shaped grooves (47). When the pressing part (41) and the handle (40) are in the locked position, the rear end of the pressing part (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 part (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. The pressing part (41) drives the second torsion spring (42) to store energy. The rear end of the pressing part (41) lifts up and disengages from the third positioning surface (44). The free end of the second torsion spring (42) that abuts against the arc groove (47) is squeezed to be parallel to the arc groove (47). The pressing part (41) is in the free position. The handle (40) can rotate to select between the locked position and the free position. When the pressing part (41) is in the free position, the handle (40) can rotate to the free position, the handle (40) drives the U-shaped connector (45) to move backward, the U-shaped connector (45) can rotate freely, and the U-shaped connector (45) can be placed / released from the fastening groove (32). When the pressure on the pressing part (41) is released, the second torsion spring (42) drives the front end of the pressing part (41) to rotate upward and reset. 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.

10. The curved LED display screen as described in claim 1, 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). The first connecting pin (49) slides within 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). The second connecting pin (51) slides within the second arc-shaped track (50). The cooperation between the first arc-shaped track (48) and the first connecting pin (49), and the cooperation between the second arc-shaped track (50) and the second connecting pin (51), together limit the sliding of the lock sleeve (8) relative to the lock seat (7) along a certain arc. The second connecting pin (51) has an angle value corresponding to the position of the lock sleeve (8), 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).

Images