A modular splicing and hanging LED display screen and its installation method

Abstract

The invention relates to the technical field of LED display screens, and discloses a modular spliced ​​suspended LED display screen. For a plurality of LED display screen bodies spliced ​​together, a connection mechanism is first used to perform preliminary positioning on four LED display screen bodies, and the positioning method is simple. Only by twisting a rotating column and using four positioning bolts can the positioning of three adjacent LED display screen bodies be realized, and not only the positioning is firm, but also the positioning structure used is simple and easy to operate; then a locking mechanism is used to drive the positioning column in the positioning mechanism to be inserted into the interior of a positioning socket, and a protrusion is pushed by a second spring to move up and be stuck in the interior of a limiting hole, so that the positioning mechanism positions the LED display screen body, and only by twisting the rotating column can the locking connection of four adjacent LED display screen bodies be realized. Two connection structures are used to position the LED display screen body, so that the connection stability of the four LED display screen bodies is improved, and the LED display screen bodies are not easy to shake or even fall off during use.

Description

Technical Field

[0001] The invention relates to the technical field of LED display screens, and in particular to a modular splicing and hanging LED display screen and an installation method thereof. Background Art

[0002] LED screen is a new type of imaging electronic device made of light-emitting diodes arranged in sequence. Due to its high brightness, wide viewing angle, long life and other characteristics, it is widely used in outdoor advertising screens and other products. Modular splicing LED display is an advanced large-screen display technology, which forms a complete large screen by splicing multiple LED display modules together. Each LED display module is an independent unit, which integrates key components such as LED dot matrix, drive circuit, control system, etc., making the entire display highly flexible and scalable.

[0003] After searching, the patent with application number CN202211328878.9 discloses a modular splicing display screen, which relates to the field of display screen technology. The application includes: a support frame plate, which is connected to the wall by bolts, and the support frame plate is detachably connected to a folding frame through a connecting vertical plate, and the other end of the folding frame is detachably connected to a display screen; a positioning member, including an L-shaped rod fixedly connected to the four corners of the support frame plate, and a plug column is horizontally slidably installed on the L-shaped rod, and a support spring is connected between the plug column and the inner concave surface of the L-shaped rod, and the display screen is detachably connected to a sleeve tube arranged opposite to the four plug columns. This application can realize the operation of pressing and splicing the display screen by pressing and disengaging the original position through the setting of the pressing card connector, and then through the connection of the folding frame, a single display screen can be repaired without disassembly, which improves the convenience of the equipment, and a single display screen can also be disassembled and installed without disassembling the overall equipment, which is more convenient and labor-saving.

[0004] The current modular LED display screen has a complex connection structure for connecting multiple display screen modules, and a large number of bolts are needed to connect the display screen modules, which is time-consuming, labor-intensive, and inconvenient to disassemble and assemble. In addition, the current modular LED display screen is not particularly stable and only uses one connection method. After long-term use or in special circumstances (external force touch or strong wind, etc.), the connection structure is easily loosened, and the display screen module is at risk of being loosely connected or even falling off. Therefore, we need to propose a modular spliced ​​suspended LED display screen and an installation method thereof. Summary of the invention

[0005] The object of the present invention is to provide a modular splicing and hanging LED display screen and an installation method thereof. Through the design of a positioning mechanism, a locking mechanism and a connecting mechanism, for a plurality of LED display screen bodies spliced ​​together, the connecting mechanism is first used to perform preliminary positioning on four LED display screen bodies, and the positioning method is simple. Only by twisting a rotating column and using four positioning bolts can the positioning of three adjacent LED display screen bodies be achieved. Not only is the positioning firm, but the positioning structure used is simple and easy to operate. Then, the locking mechanism is used to drive the positioning column in the positioning mechanism to be inserted into the interior of the positioning socket, and the protrusion is pushed up by the second spring and stuck in the interior of the limiting hole, so that the positioning mechanism positions the LED display screen body. Only by twisting the rotating column can the locking connection of the four adjacent LED display screen bodies be achieved, so that the LED display screen bodies are tightly connected. Two connection structures are used to position the LED display screen body, which improves the connection stability of the four LED display screen bodies, making it difficult for them to shake or even fall off during use, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: a modular splicing and hanging LED display screen, comprising an LED screen spliced ​​and arranged by a plurality of LED display screen bodies through a positioning mechanism, a locking mechanism and a connecting mechanism, wherein arc-shaped notches are provided at the four corners on the back of the LED display screen body, and a positioning mechanism is movably installed inside each of the notches;

[0007] The locking mechanism is fixed inside the installation groove formed by four notches on four adjacent LED display screen bodies, and the positioning mechanism is located inside the locking mechanism. The locking mechanism drives four groups of positioning mechanisms to move and position them on four adjacent LED display screen bodies;

[0008] The connecting mechanism is installed in the middle of the back side of the LED display screen body, the positioning mechanism and the connecting mechanism are located on the same side of the LED display screen body, and the connecting mechanisms on two adjacent LED display screen bodies are vertically arranged, and the connecting mechanism on one of the LED display screen bodies is used to connect the two LED display screen bodies on its opposite sides.

[0009] Preferably, a slide groove is provided at the inner bottom of the notch, a positioning hole for the positioning mechanism to be plugged into is provided on the side wall of the notch, and a limiting hole connected to the positioning hole is provided on the surface of the main body of the LED display screen.

[0010] Preferably, the positioning mechanism includes a positioning column inserted into the positioning socket, the lower end of the positioning column is connected to a push plate, a slider is slidably installed inside the slide groove, the push plate abuts against the slider, and a first spring is connected between one side of the slider and the inner wall of the slide groove.

[0011] Preferably, a groove is formed on the outer wall of the positioning column, a liftable protrusion is provided inside the groove, the protrusion is clamped inside the limiting hole, and a second spring is connected between the bottom of the protrusion and the inner bottom of the groove.

[0012] Preferably, the locking mechanism includes a cover shell installed inside the mounting groove, a recess is formed on the outer wall of the cover shell for the positioning column to pass through, a fixing ring is installed on the top of the cover shell, a cover plate is fixedly installed on the upper end of the inner wall of the fixing ring, a sleeve is connected to the lower end of the cover plate, a guide hole is formed on the side wall of the sleeve, and the positioning column is slidably installed inside the guide hole.

[0013] Preferably, a threaded rod is threadedly connected on the cover plate, and the lower end of the threaded rod is connected to an extrusion column that abuts against the positioning column. One end of the positioning column is inclined, and the lower end of the extrusion column is connected to a threaded column. A threaded groove is provided at the corner of the groove, and the four threaded grooves on the four adjacent groups of the LED display screen body form a threaded blind hole, and the threaded column is threadedly connected to the inside of the threaded blind hole.

[0014] Preferably, a guide groove is provided on the side of the notch, a card slot is provided on the inner wall of the notch, a guide block is connected to the outer wall of the cover shell, and the guide block is clamped in the inside of two guide grooves on two adjacent LED display screen bodies. A movably arranged card block is also installed at the lower end of the outer wall of the cover shell, and the card block is clamped in the inside of the card slot.

[0015] Preferably, the connecting mechanism includes a shell fixed to the middle part of the back side of the LED display screen body, a positive and negative threaded screw is rotatably installed inside the shell, two sliding seats that move toward each other are threadedly connected on the outer wall of the positive and negative threaded screw, two connecting rods are connected to the sliding seats, and the ends of the connecting rods are connected to connecting blocks. Two connecting seats are also installed on the LED display screen body, and slots are provided on the connecting seats. The two connecting blocks on one of the LED display screen bodies are fixed to the inside of the slots of the connecting seats on the other two LED display screen bodies by positioning bolts.

[0016] Preferably, a first through hole is provided at the top of the shell, a second through hole is provided at the side of the shell, a rotating column is rotatably installed inside the first through hole, a first bevel gear is sleeved on the outer wall of the rotating column, a second bevel gear is sleeved on the middle part of the outer wall of the forward and reverse thread screw, the first bevel gear is meshed with the second bevel gear, and the connecting rod is slidably installed inside the second through hole.

[0017] Based on the above-described modular splicing and hanging LED display screen, the present invention also provides a method for installing the modular splicing and hanging LED display screen, comprising the following steps:

[0018] S1. Splice at least four LED display screen bodies together and perform preliminary positioning of the four LED display screen bodies through a connecting mechanism;

[0019] S2. Turn the rotating column to drive the positive and negative threaded screws to rotate under the cooperation of the first bevel gear and the second bevel gear. The rotation of the positive and negative threaded screws drives the two slide seats to move away from each other and drives the two connecting blocks to move, so that one end of the connecting block is inserted into the inside of the slot on the connecting seat, and the connecting block is fixed inside the slot by the positioning bolt;

[0020] S3, install the cover in the locking mechanism into the installation slot composed of four notches, and during the installation process, the guide block is inserted into the two guide slots on the two adjacent LED display screen bodies, and after the locking mechanism is installed in place, the card block is connected to the inside of the card slot to achieve the initial positioning of the cover;

[0021] S4. Turn the threaded rod on the cover plate, and the threaded rod drives the extrusion column and the threaded column to descend. During the descent process, the extrusion column hits the inclined surface of one end of the positioning column, pushing the other end of the positioning column into the interior of the positioning socket, and the protrusion is first squeezed by the inner wall of the positioning socket. After the positioning column moves into place, the protrusion moves up and is stuck in the interior of the limiting hole under the push of the second spring, thereby realizing the positioning of the LED display screen body by the positioning mechanism. During the descent process of the threaded column, it cooperates with the threaded blind hole composed of four thread grooves to realize the locking of the cover shell.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention adopts the design of positioning mechanism, locking mechanism and connecting mechanism. For multiple LED display screen bodies spliced ​​together, the connecting mechanism is first used to perform preliminary positioning on four LED display screen bodies. The positioning method is simple. Only by twisting the rotating column and using four positioning bolts can the positioning of three adjacent LED display screen bodies be achieved. Not only is the positioning firm, but the positioning structure used is simple and easy to operate.

[0024] 2. The present invention then uses a locking mechanism to drive the positioning column in the positioning mechanism to be inserted into the interior of the positioning socket, and allows the protrusion to move up and be stuck in the interior of the limiting hole under the push of the second spring, thereby realizing the positioning of the LED display screen body by the positioning mechanism. The locking connection of the four adjacent LED display screen bodies can be achieved by simply twisting the rotating column, so that the connection between the LED display screen bodies is tightened. The two connection structures are used to position the LED display screen bodies, thereby improving the connection stability of the four LED display screen bodies, making it less likely to shake or even fall off during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1A schematic diagram of the splicing structure of multiple LED display screens of the present invention;

[0026] Figure 2 It is a structural schematic diagram of the positioning mechanism and the connecting mechanism of the present invention;

[0027] Figure 3 For the present invention Figure 1 Enlarged view of part A in the middle;

[0028] Figure 4 An exploded view of the positioning mechanism and the locking mechanism of the present invention;

[0029] Figure 5 An exploded view of the connection mechanism of the present invention;

[0030] Figure 6 It is a flowchart of the present invention.

[0031] In the figure: 1. LED display screen body; 2. Notch; 21. Card slot; 22. Positioning jack; 23. Limiting hole; 24. Slide; 25. Guide slot; 26. Threaded slot; 3. Positioning mechanism; 31. Positioning column; 32. Bump; 33. Slider; 34. First spring; 35. Groove; 36. Second spring; 37. Push plate; 4. Locking mechanism; 41. Cover; 42. Displacement slot; 43. Guide block; 44. Card block; 45. Fixing Ring; 46, cover plate; 47, sleeve; 48, guide hole; 49, threaded rod; 410, extrusion column; 411, threaded column; 5, connecting mechanism; 51, housing; 52, first through hole; 53, second through hole; 54, positive and negative thread screw; 55, rotating column; 56, first bevel gear; 57, second bevel gear; 58, sliding seat; 59, connecting rod; 510, connecting block; 511, connecting seat; 512, slot; 513, positioning bolt. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] See also Figure 1-Figure 5 The present invention provides a technical solution: a modular splicing and hanging LED display screen, comprising an LED screen spliced ​​and arranged by a plurality of LED display screen bodies 1 through a positioning mechanism 3, a locking mechanism 4 and a connecting mechanism 5, arc-shaped notches 2 are provided at the four corners on the back of the LED display screen body 1, and a positioning mechanism 3 is movably installed inside each notch 2;

[0034] The locking mechanism 4 is fixed inside the mounting groove formed by four notches 2 on four adjacent LED display screen bodies 1. The mounting groove is a circular mounting groove, that is, the notches 2 are notches in the shape of a quarter of a circular arc. The positioning mechanism 3 is located inside the locking mechanism 4. The locking mechanism 4 drives the four groups of positioning mechanisms 3 to move and position them on four adjacent LED display screen bodies 1. The positioning mechanism 3 realizes the positioning of the LED display screen body 1.

[0035] The connecting mechanism 5 is installed in the middle of the back side of the LED display screen body 1, the positioning mechanism 3 and the connecting mechanism 5 are located on the same side of the LED display screen body 1, that is, both are located on the back side of the LED display screen body 1, and the connecting mechanisms 5 on two adjacent LED display screen bodies 1 are vertically arranged, that is, the horizontally arranged connecting mechanism 5 is used to fix the three horizontally arranged LED display screen bodies 1, and the vertically arranged connecting mechanism 5 is used to fix the three vertically arranged LED display screen bodies 1, and the connecting mechanism 5 on one LED display screen body 1 is used to connect the two LED display screen bodies 1 on the opposite sides thereof, so as to realize the positioning between the adjacent LED display screen bodies 1.

[0036] A slide groove 24 is provided at the inner bottom of the notch 2, a positioning hole 22 for the positioning mechanism 3 to be plugged into is provided on the side wall of the notch 2, a limiting hole 23 connected to the positioning hole 22 is provided on the surface of the LED display main body 1, and the positioning hole 22 and the limiting hole 23 are vertically arranged.

[0037] The positioning mechanism 3 includes a positioning column 31 inserted into the positioning socket 22. The diameter of the positioning socket 22 is equal to the diameter of the positioning column 31. The lower end of the positioning column 31 is connected to a push plate 37. A slider 33 is slidably installed inside the slide groove 24. The push plate 37 abuts against the slider 33. Specifically, the lower end of the slider 33 is set to an isosceles trapezoidal shape, and the cross-section of the slide groove 24 is also an isosceles trapezoidal shape, which ensures that the slider 33 slides stably inside the slide groove 24 and prevents the slider 33 from detaching from the slide groove 24. A first spring 34 is connected between one side of the slider 33 and the inner wall of the slide groove 24. When the slider 33 moves in the slide groove 24 toward the inner wall of the defective groove 2, the first spring 34 is compressed.

[0038] The outer wall of the positioning column 31 is provided with a groove 35 , and a liftable protrusion 32 is arranged inside the groove 35 . The protrusion 32 is clamped inside the limiting hole 23 , and a second spring 36 is connected between the bottom of the protrusion 32 and the inner bottom of the groove 35 .

[0039] When the other end of the positioning column 31 is inserted into the interior of the positioning hole 22, the protrusion 32 is first squeezed by the inner wall of the positioning hole 22. After the positioning column 31 moves into place, the protrusion 32 moves up under the push of the second spring 36 and is stuck in the interior of the limiting hole 23, thereby realizing the positioning of the LED display screen body 1 by the positioning mechanism 3.

[0040] The locking mechanism 4 includes a cover shell 41 installed inside the installation groove, and a clearance groove 42 for the positioning column 31 to pass through is opened on the outer wall of the cover shell 41. The diameter of the clearance groove 42 is equal to the diameter of the positioning column 31 to ensure the stability of the positioning column 31 during the movement process. A fixing ring 45 is installed on the top of the cover shell 41, and a cover plate 46 is fixedly installed on the upper end of the inner wall of the fixing ring 45. The lower end of the cover plate 46 is connected to a sleeve 47. The side wall of the sleeve 47 is opened with a guide hole 48, and the positioning column 31 is slidably installed inside the guide hole 48.

[0041] A threaded rod 49 is threadedly connected to the cover plate 46, and the lower end of the threaded rod 49 is connected to an extrusion column 410 that abuts against the positioning column 31. One end of the positioning column 31 is inclined, and the lower end of the extrusion column 410 is connected to a threaded column 411. A threaded groove 26 is provided at the corner of the notch 2. The four threaded grooves 26 on the four adjacent groups of LED display main bodies 1 form a threaded blind hole, and the threaded column 411 is threadedly connected to the inside of the threaded blind hole.

[0042] Rotating the threaded rod 49 drives the extrusion column 410 and the threaded column 411 to descend. During the descending process, the extrusion column 410 hits the inclined surface at one end of the positioning column 31, causing the positioning column 31 to move laterally, that is, pushing the other end of the positioning column 31 into the interior of the positioning socket 22. During the descending process, the threaded column 411 cooperates with the threaded blind hole composed of the four thread grooves 26 to achieve locking of the cover shell 41.

[0043] A guide groove 25 is provided on the side of the notch 2, a card slot 21 is provided on the inner wall of the notch 2, a guide block 43 is connected to the outer wall of the cover shell 41, and the guide block 43 is snapped into the inside of the two guide grooves 25 on the two adjacent LED display screen bodies 1. A movable card block 44 is also installed at the lower end of the outer wall of the cover shell 41, and the card block 44 is snapped into the inside of the card slot 21.

[0044] The guide grooves 25 are provided, and the guide blocks 43 are inserted into the inside of the two guide grooves 25 on the two adjacent LED display screen bodies 1 to ensure the correct installation angle of the cover 41.

[0045] The connecting mechanism 5 includes a shell 51 fixed to the middle part of the back side of the LED display screen body 1, and a positive and negative thread screw 54 is rotatably installed inside the shell 51. Two slide seats 58 that move toward each other are threadedly connected on the outer wall of the positive and negative thread screw 54. Two connecting rods 59 are connected to the slide seat 58. The ends of the connecting rods 59 are connected to connecting blocks 510. Two connecting seats 511 are also installed on the LED display screen body 1. The connecting seats 511 are provided with slots 512. The two connecting blocks 510 on one LED display screen body 1 are fixed to the inside of the slots 512 of the connecting seats 511 on the other two LED display screen bodies 1 by positioning bolts 513.

[0046] By turning the rotating column 55, the forward and reverse threaded screw 54 is driven to rotate with the cooperation of the first bevel gear 56 and the second bevel gear 57. The rotation of the forward and reverse threaded screw 54 drives the two slide seats 58 to move away from each other, and drives the two connecting blocks 510 to move, so that one end of the connecting block 510 is inserted into the inside of the slot 512 on the connecting seat 511, and the connecting block 510 is fixed inside the slot 512 by the positioning bolt 513, so as to realize the connection between two adjacent LED display screen bodies 1.

[0047] A first through hole 52 is provided at the top of the shell 51, and a second through hole 53 is provided at the side of the shell 51. A rotating column 55 is rotatably installed inside the first through hole 52. A bearing is installed inside the first through hole 52. The rotating column 55 is inserted into the inner ring of the bearing. A first bevel gear 56 is sleeved on the outer wall of the rotating column 55. A second bevel gear 57 is sleeved on the middle part of the outer wall of the forward and reverse thread screw 54. The first bevel gear 56 is meshed with the second bevel gear 57. A connecting rod 59 is slidably installed inside the second through hole 53. The second through hole 53 can ensure the stability of the movement of the connecting rod 59.

[0048] See also Figure 6 Based on the above-described modular splicing and hanging LED display screen, the present invention also provides an installation method of the modular splicing and hanging LED display screen, comprising the following steps:

[0049] S1, splicing at least four LED display screen bodies 1 together, and performing preliminary positioning of the four LED display screen bodies 1 through a connecting mechanism 5;

[0050] S2. Turn the rotating column 55 to drive the forward and reverse threaded screw 54 to rotate under the cooperation of the first bevel gear 56 and the second bevel gear 57. The forward and reverse threaded screw 54 rotates to drive the two slide seats 58 to move away from each other, and drives the two connecting blocks 510 to move, so that one end of the connecting block 510 is inserted into the inside of the slot 512 on the connecting seat 511, and the connecting block 510 is fixed inside the slot 512 by the positioning bolt 513;

[0051] S3, install the cover 41 in the locking mechanism 4 into the installation slot composed of four notches 2, and during the installation process, the guide block 43 is inserted into the two guide slots 25 on the two adjacent LED display main bodies 1, and after the locking mechanism 4 is installed in place, the clamping block 44 is clamped into the inside of the clamping slot 21 to achieve the initial positioning of the cover 41;

[0052] S4. Turn the threaded rod 49 on the cover plate 46, and the threaded rod 49 drives the extrusion column 410 and the threaded column 411 to descend. During the descent process, the extrusion column 410 contacts the inclined surface at one end of the positioning column 31, pushing the other end of the positioning column 31 to be inserted into the interior of the positioning socket 22, and the protrusion 32 is first squeezed by the inner wall of the positioning socket 22. After the positioning column 31 moves into place, the protrusion 32 moves up and is stuck in the interior of the limiting hole 23 under the push of the second spring 36, so that the positioning mechanism 3 positions the LED display screen body 1. During the descent process, the threaded column 411 cooperates with the threaded blind hole composed of four thread grooves 26 to achieve locking of the cover shell 41.

[0053] In summary, the present invention first uses the connection mechanism 5 to perform preliminary positioning on the four LED display screen bodies 1, and the positioning method is simple. Only by twisting the rotating column 55 and using four positioning bolts 513, the positioning of three adjacent LED display screen bodies 1 can be achieved. Not only is the positioning firm, but the positioning structure used is simple and easy to operate.

[0054] The locking mechanism 4 is then used to drive the positioning column 31 in the positioning mechanism 3 to be inserted into the interior of the positioning socket 22, and the protrusion 32 is moved upward under the push of the second spring 36 and stuck in the interior of the limiting hole 23, so that the positioning mechanism 3 can position the LED display screen body 1. The locking connection of the four adjacent LED display screen bodies 1 can be achieved by simply twisting the rotating column 55, so that the connection between the LED display screen bodies 1 is tightened. The two connection structures are used to position the LED display screen bodies 1, which improves the connection stability of the four LED display screen bodies 1 and makes it less likely to shake or even fall off during use.

[0055] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A modular splicing and hanging LED display screen, characterized by: The LED screen comprises a plurality of LED display screen bodies (1) spliced ​​together by a positioning mechanism (3), a locking mechanism (4) and a connecting mechanism (5), wherein four corners of the back of the LED display screen body (1) are provided with arc-shaped notches (2), and a positioning mechanism (3) is movably installed inside each of the notches (2); The locking mechanism (4) is fixed inside a mounting groove formed by four notches (2) on four adjacent LED display screen bodies (1); the positioning mechanism (3) is located inside the locking mechanism (4); the locking mechanism (4) drives the four groups of positioning mechanisms (3) to move and position them on four adjacent LED display screen bodies (1); The connecting mechanism (5) is installed in the middle of the back side of the LED display screen body (1), the positioning mechanism (3) and the connecting mechanism (5) are located on the same side of the LED display screen body (1), and the connecting mechanisms (5) on two adjacent LED display screen bodies (1) are arranged vertically, and the connecting mechanism (5) on one of the LED display screen bodies (1) is used to connect the two LED display screen bodies (1) on opposite sides thereof; The inner bottom of the notch (2) is provided with a slide groove (24), the side wall of the notch (2) is provided with a positioning hole (22) for the positioning mechanism (3) to be plugged in, and the surface of the LED display screen body (1) is provided with a limiting hole (23) connected with the positioning hole (22); The positioning mechanism (3) comprises a positioning column (31) inserted into the positioning socket (22), a push plate (37) is connected to the lower end of the positioning column (31), a slider (33) is slidably installed inside the slide groove (24), the push plate (37) abuts against the slider (33), a first spring (34) is connected between one side of the slider (33) and the inner wall of the slide groove (24); a groove (35) is provided on the outer wall of the positioning column (31), a liftable protrusion (32) is provided inside the groove (35), the protrusion (32) is clamped inside the limiting hole (23), and a second spring (36) is connected between the bottom of the protrusion (32) and the inner bottom of the groove (35); The locking mechanism (4) comprises a cover shell (41) installed inside the installation groove, a clearance groove (42) for the positioning column (31) to pass through is opened on the outer wall of the cover shell (41), a fixing ring (45) is installed on the top of the cover shell (41), a cover plate (46) is fixedly installed on the upper end of the inner wall of the fixing ring (45), a sleeve (47) is connected to the lower end of the cover plate (46), a guide hole (48) is opened on the side wall of the sleeve (47), and the positioning column (31) is slidably installed inside the guide hole (48); The cover plate (46) is threadedly connected with a threaded rod (49), the lower end of the threaded rod (49) is connected with an extrusion column (410) that abuts against the positioning column (31), one end of the positioning column (31) is inclined, the lower end of the extrusion column (410) is connected with a threaded column (411), a threaded groove (26) is provided at a corner of the notch (2), the four threaded grooves (26) on the four adjacent groups of the LED display screen body (1) form a threaded blind hole, and the threaded column (411) is threadedly connected inside the threaded blind hole; A guide groove (25) is provided on the side of the notch (2), a clamping groove (21) is provided on the inner wall of the notch (2), a guide block (43) is connected to the outer wall of the cover shell (41), the guide block (43) is clamped in the inside of two guide grooves (25) on two adjacent LED display screen bodies (1), and a movable clamping block (44) is also installed at the lower end of the outer wall of the cover shell (41), and the clamping block (44) is clamped in the inside of the clamping groove (21).

2. The modular splicing and hanging LED display screen according to claim 1 is characterized by: The connection mechanism (5) comprises a shell (51) fixed to the middle part of the back side of the LED display screen body (1); a positive and negative threaded screw (54) is rotatably mounted inside the shell (51); two slide seats (58) that move towards each other are threadedly connected on the outer wall of the positive and negative threaded screw (54); two connecting rods (59) are connected to the slide seats (58); the ends of the connecting rods (59) are connected to connecting blocks (510); two connecting seats (511) are also mounted on the LED display screen body (1); slots (512) are provided on the connecting seats (511); the two connecting blocks (510) on one of the LED display screen bodies (1) are fixed to the inside of the slots (512) of the connecting seats (511) on the other two LED display screen bodies (1) by means of positioning bolts (513).

3. The modular splicing and hanging LED display screen according to claim 2 is characterized by: A first through hole (52) is provided at the top of the shell (51), a second through hole (53) is provided at the side of the shell (51), a rotating column (55) is rotatably mounted inside the first through hole (52), a first bevel gear (56) is sleeved on the outer wall of the rotating column (55), a second bevel gear (57) is sleeved on the middle part of the outer wall of the forward and reverse threaded screw (54), the first bevel gear (56) is meshed with the second bevel gear (57), and the connecting rod (59) is slidably mounted inside the second through hole (53).

4. A method for installing a modular splicing and hanging LED display screen, based on the modular splicing and hanging LED display screen according to claim 3, characterized in that: The following steps are involved: S1. Splice at least four LED display screen bodies together and perform preliminary positioning of the four LED display screen bodies through a connecting mechanism; S2. Turn the rotating column to drive the positive and negative threaded screws to rotate under the cooperation of the first bevel gear and the second bevel gear. The rotation of the positive and negative threaded screws drives the two slide seats to move away from each other and drives the two connecting blocks to move, so that one end of the connecting block is inserted into the inside of the slot on the connecting seat, and the connecting block is fixed inside the slot by the positioning bolt; S3, install the cover in the locking mechanism into the installation slot composed of four notches, and during the installation process, the guide block is inserted into the two guide slots on the two adjacent LED display screen bodies, and after the locking mechanism is installed in place, the card block is connected to the inside of the card slot to achieve the initial positioning of the cover; S4. Turn the threaded rod on the cover plate, and the threaded rod drives the extrusion column and the threaded column to descend. During the descent process, the extrusion column hits the inclined surface of one end of the positioning column, pushing the other end of the positioning column into the interior of the positioning socket, and the protrusion is first squeezed by the inner wall of the positioning socket. After the positioning column moves into place, the protrusion moves up and is stuck in the interior of the limiting hole under the push of the second spring, thereby realizing the positioning of the LED display screen body by the positioning mechanism. During the descent process of the threaded column, it cooperates with the threaded blind hole composed of four thread grooves to realize the locking of the cover shell.

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