CN218032330U

CN218032330U - LED display screen unit and spliced LED display screen thereof

Info

Publication number: CN218032330U
Application number: CN202222186232.3U
Authority: CN
Inventors: 陆昌海; 农秋柃; 卢昭
Original assignee: Guangxi Nanning Yingguo Photoelectric Technology Development Co ltd
Current assignee: Guangxi Nanning Yingguo Photoelectric Technology Development Co ltd
Priority date: 2022-08-18
Filing date: 2022-08-18
Publication date: 2022-12-13
Anticipated expiration: 2032-08-18

Abstract

The utility model belongs to the technical field of LED display, especially, LED display screen unit and LED display screen of concatenation formula thereof, can't height-adjusting after fixing on the wall to current device installation, if the installation height does not need to punch the installation again on the wall, destroy the pleasing to the eye of wall, the step is loaded down with trivial details, and the demonstration every single move angle of this concatenation formula LED display screen can't be adjusted, can only adjust through the installation angle that changes the mounting bracket, again need reinstallation and demolition, the step is loaded down with trivial details, the lower problem of practicality, the following scheme is put forward now, it includes the wall mounting bracket, the side of wall mounting bracket is fixedly connected with first connecting plate, the upside of first connecting plate is equipped with the second connecting plate, be equipped with a set of elevating system that is used for driving the second connecting plate and carries out height adjustment between first connecting plate and the second connecting plate; repeated disassembly and assembly are avoided, and the practicability is high.

Description

LED display screen unit and spliced LED display screen thereof

Technical Field

The utility model relates to a LED shows technical field, especially relates to a LED display screen unit and concatenation formula LED display screen thereof.

Background

The LED display screen is a flat panel display, is made up of LED module panel one by one, the apparatus used for displaying various information such as characters, picture, video, etc., chinese patent with publication No. CN208954545U discloses a LED display screen unit and its splice type LED display screen, it can pass the cooperation of the male end of telescopic connector and female end of the connector integrated in the LED display screen unit, have avoided adopting the connecting wire to connect the break-even distribution of the resulting connecting wire after the electric connection of the connecting wire effectively, the emergence of a great deal of problems such as being inconvenient for maintaining, etc.; through the block of hidden trip and screens, can effectively avoid the trip to expose potential hidden danger such as mutual collision that causes, and can effectively promote the reliable connection between the concatenation body, the LED display screen is installed many times and is spliced fixed the use on the mounting bracket, but the device installation is fixed unable height-adjusting behind on the wall, if the installation mounting height does not punch the installation on the wall again to needs, the pleasing to the eye of wall has been destroyed, the step is loaded down with trivial details, and the unable regulation of the demonstration pitch angle of this concatenation formula LED display screen, can only adjust through the installation angle that changes the mounting bracket, need again to install again safely, the step is loaded down with trivial details, the practicality is lower.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving and having the unable height-adjusting in back of device installation fixing on the wall among the prior art, if installation mounting height does not punch the installation again on the wall to needs, destroyed the pleasing to the eye of wall, the step is loaded down with trivial details, and the unable regulation of the demonstration every single move angle of this concatenation formula LED display screen, can only adjust through the installation angle who changes the mounting bracket, need again to install again and tear open, the step is loaded down with trivial details, the lower shortcoming of practicality, and the LED display screen unit that proposes.

In order to realize the purpose, the utility model adopts the following technical scheme:

an LED display screen unit comprises a wall mounting frame, wherein a first connecting plate is fixedly connected to the side end of the wall mounting frame, a second connecting plate is arranged on the upper side of the first connecting plate, and a group of lifting mechanisms used for driving the second connecting plate to perform height adjustment are arranged between the first connecting plate and the second connecting plate; the top end of the second connecting plate is fixedly connected with a U-shaped frame, a rotating shaft is rotatably connected in the U-shaped frame, an adjusting plate is fixedly connected to the circumferential surface of the rotating shaft, an LED splicing mounting plate is fixedly connected to the side end of the adjusting plate, a group of positioning mechanisms are arranged in the U-shaped frame, and the positioning mechanisms are used for limiting the position of the LED splicing mounting plate; two sides in the U-shaped frame are provided with a group of extrusion mechanisms, the two groups of extrusion mechanisms are used for adjusting the display pitching angle of the LED splicing mounting plate, and a group of driving mechanisms used for driving the two groups of extrusion mechanisms to move are arranged in the U-shaped frame.

Preferably, the lifting mechanism comprises a third groove arranged in the first connecting plate, a second groove is formed in the second connecting plate, two first limiting rods are fixedly connected in the third groove, two second limiting rods are fixedly connected in the second groove, two first limiting rods and two second limiting rods are fixedly connected on the circumferential surface of each second limiting rod respectively, a first movable plate and a second movable plate are slidably connected on the circumferential surface of each second limiting rod respectively, the top end of each first movable plate is movably hinged to the bottom end of each second fixed plate through a hinge, two first lifting rods are movably hinged to the top end of each first lifting rod through a hinge, two second lifting rods are movably hinged to the top end of each first fixed plate through a hinge, the top ends of the two second lifting rods are movably hinged to the bottom end of each second movable plate through hinges, a first driving screw rod is rotatably connected in the third groove, the first fixed plate is sleeved on the circumferential surface of the first driving screw rod, the first driving screw rod is connected to the driving surface of the first movable plate, and a servo motor is connected to the first driving screw rod and the first movable plate through a servo motor.

Preferably, positioning mechanism all includes two first recesses, two of seting up in U type frame fixedly connected with lantern ring in the first recess, two the equal sliding connection in circumference surface of the lantern ring has the stopper, two fixedly connected with slide bar between the stopper, the buffering spout has been seted up in the regulating plate, slide bar sliding connection is in buffering spout, two the equal fixedly connected with powerful positioning spring in top of stopper, two the top of powerful positioning spring is fixed connection respectively in the upper inner wall of two first recesses, two the circumference surface of two lantern rings is located to powerful positioning spring cover respectively.

Preferably, every group the extrusion mechanism all includes the U type groove of seting up in U type frame and being linked together with first recess, U type inslot sliding connection has trapezoidal extrusion piece, the circumference fixed surface of slide bar is connected with the lantern ring, lantern ring sliding connection is in the inclined plane of trapezoidal extrusion piece.

Preferably, actuating mechanism includes two third gag lever posts of fixed connection in U type inslot, two the circumference surface sliding connection of third gag lever post has same threading board, U type inslot rotation is connected with second drive lead screw, threading board threaded connection is in the circumference surface of second drive lead screw, the side fixedly connected with second servo drive motor of U type frame, second servo drive motor is connected through shaft coupling and second drive lead screw, two equal fixed connection in the top of threading board of trapezoidal extrusion piece.

Compared with the prior art, the beneficial effects of the utility model are that:

1. when the height of the LED spliced mounting plate needs to be adjusted, the first servo driving motor is started to drive the first driving screw rod to rotate, the first driving screw rod rotates to drive the first movable plate to move in position, the first movable plate moves in position to drive the two first lifting rods to be hinged to the two end portions of the top end of the first movable plate and follow the first movable plate to move in synchronous position, the position between the first movable plate and the second fixed plate on the upper side is limited by the first lifting rod, adjustment occurs to the position of one end of the first lifting rod, the position of the other end of the first lifting rod can move synchronously, the positions of the first fixed plate and the second movable plate are connected through the second lifting rod, position adjustment between the second fixed plate and the first movable plate can be changed into position adjustment of the horizontal height, the first movable plate drives the second fixed plate to move upwards through the first lifting rod, the second fixed plate drives the second connecting plate to horizontally lift, and height adjustment of the LED spliced mounting plate is completed.

2. The limiting block is pressed downwards through the elasticity of the two powerful positioning springs, so that when the limiting block is not under pressure from the outside, a relatively stable state can be kept, the stability of the LED splicing mounting plate in normal use is ensured, the second servo driving motor is started to drive the second driving screw rod to rotate, the second driving screw rod can drive the threaded plate to move, the threaded plate moves to drive the two trapezoidal extrusion blocks to move, the two trapezoidal extrusion blocks move to extrude the two lantern rings, the two lantern rings slide along the inclined planes of the trapezoidal extrusion blocks, the lantern rings drive the sliding rod to move upwards, the powerful positioning springs are extruded by the upward movement of the sliding rod, the sliding rod slides in the buffer sliding groove in the upward movement process, the adjusting plate and the rotating shaft are driven to perform circular motion by taking the central point of the rotating shaft as the circle center, the other end of the adjusting plate is also adjusted in angle, and the display pitch angle of the LED splicing mounting plate is adjusted.

The utility model discloses in, this device can effectual adjustment LED concatenation mounting panel height through elevating system's setting, has avoided LED concatenation mounting panel because the high installation need not punch the installation again on the wall, has promoted work efficiency, utilizes positioning mechanism to inject the position of LED concatenation mounting panel simultaneously, simultaneously through, actuating mechanism drive extrusion mechanism comes to adjust the demonstration every single move angle of LED concatenation mounting panel, has avoided repeated dismantlement installation, and the practicality is higher.

Drawings

Fig. 1 is a front perspective view of an LED display screen unit and a spliced LED display screen thereof provided by the present invention;

fig. 2 is a first partial cross-sectional view of an LED display screen unit and a spliced LED display screen thereof according to the present invention;

fig. 3 is a second partial sectional view of an LED display screen unit and a spliced LED display screen thereof provided by the present invention;

fig. 4 is a third partial cross-sectional view of an LED display screen unit and a spliced LED display screen thereof provided by the present invention;

fig. 5 is a partial perspective view of an LED display screen unit and a spliced LED display screen thereof according to the present invention;

fig. 6 is the utility model provides a fourth local cross-sectional view of LED display screen unit and concatenation formula LED display screen thereof.

In the figure: 1. a wall mount; 2. a first connecting plate; 3. a second connecting plate; 4. a U-shaped frame; 5. LED splicing mounting plates; 6. an adjusting plate; 7. a first lifting rod; 71. a second lifting rod; 8. a first fixing plate; 81. a second fixing plate; 9. a first movable plate; 91. a second movable plate; 10. a first servo drive motor; 11. a first limit rod; 12. a first drive screw; 13. a second limiting rod; 14. a first groove; 15. a rotating shaft; 16. a buffer chute; 17. a slide bar; 18. a limiting block; 19. a collar; 20. a strong positioning spring; 21. a U-shaped groove; 22. a trapezoidal extrusion block; 23. a third limiting rod; 24. a second drive screw; 25. a thread plate; 26. a second servo drive motor; 27. a second groove; 28. and a third groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Example one

With reference to figures 1-6 of the drawings,

an LED display screen unit comprises a wall mounting frame 1, wherein a first connecting plate 2 is fixedly connected to the side end of the wall mounting frame 1, a second connecting plate 3 is arranged on the upper side of the first connecting plate 2, and a group of lifting mechanisms used for driving the second connecting plate 3 to adjust the height are arranged between the first connecting plate 2 and the second connecting plate 3; the top end of the second connecting plate 3 is fixedly connected with a U-shaped frame 4, a rotating shaft 15 is rotatably connected in the U-shaped frame 4, the circumferential surface of the rotating shaft 15 is fixedly connected with an adjusting plate 6, the side end of the adjusting plate 6 is fixedly connected with an LED splicing mounting plate 5, and a group of positioning mechanisms are arranged in the U-shaped frame 4 and used for limiting the position of the LED splicing mounting plate 5; a group of extrusion mechanisms are arranged on two sides in the U-shaped frame 4, the two groups of extrusion mechanisms are used for adjusting the display pitching angle of the LED splicing mounting plate 5, and a group of driving mechanisms used for driving the two groups of extrusion mechanisms to move are arranged in the U-shaped frame 4; this device can effectual adjustment LED concatenation mounting panel 5 height through elevating system's setting, has avoided LED concatenation mounting panel 5 because the high installation need not punch the installation again on the wall, has promoted work efficiency, utilizes positioning mechanism to inject LED concatenation mounting panel 5's position simultaneously, simultaneously through, actuating mechanism drive extrusion mechanism comes to adjust the demonstration every single move angle of LED concatenation mounting panel 5, has avoided the repeated installation of dismantling, and the practicality is higher.

Example two

An LED display screen unit comprises a wall mounting frame 1, wherein a first connecting plate 2 is fixedly connected to the side end of the wall mounting frame 1, a second connecting plate 3 is arranged on the upper side of the first connecting plate 2, and a group of lifting mechanisms used for driving the second connecting plate 3 to adjust the height are arranged between the first connecting plate 2 and the second connecting plate 3; the top end of the second connecting plate 3 is fixedly connected with a U-shaped frame 4, a rotating shaft 15 is rotatably connected in the U-shaped frame 4, the circumferential surface of the rotating shaft 15 is fixedly connected with an adjusting plate 6, the side end of the adjusting plate 6 is fixedly connected with an LED splicing mounting plate 5, and a group of positioning mechanisms are arranged in the U-shaped frame 4 and used for limiting the position of the LED splicing mounting plate 5; a group of extrusion mechanisms are arranged on two sides in the U-shaped frame 4, the two groups of extrusion mechanisms are used for adjusting the display pitching angle of the LED splicing mounting plate 5, and a group of driving mechanisms used for driving the two groups of extrusion mechanisms to move are arranged in the U-shaped frame 4;

the lifting mechanism comprises a third groove 28 arranged in the first connecting plate 2, a second groove 27 is arranged in the second connecting plate 3, two first limiting rods 11 are fixedly connected in the third groove 28, two second limiting rods 13 are fixedly connected in the second groove 27, a first fixed plate 8 and a second fixed plate 81 are fixedly connected to the circumferential surfaces of the two first limiting rods 11 and the two second limiting rods 13 respectively, a first movable plate 9 and a second movable plate 91 are slidably connected to the circumferential surfaces of the two first limiting rods 11 and the two second limiting rods 13 respectively, two first lifting rods 7 are movably hinged to the top end of the first movable plate 9 through a hinge shaft, the top ends of the two first lifting rods 7 are movably hinged to the bottom end of the second fixed plate 81 through a hinge shaft, two second lifting rods 71 are movably hinged to the top end of the first movable plate 71 through a hinge shaft, a first driving screw rod 12 is rotatably connected to the third groove 28, the first fixed plate 8 is sleeved on the circumferential surface of the first driving screw rod 12, the first lifting rods 71 are movably hinged to the bottom end of the second movable plate 91, a servo motor driving screw rod 12 is connected to the circumferential surface of the first movable plate 10, and a servo motor 10; when the height of the LED splicing mounting plate 5 needs to be adjusted, a first servo driving motor 10 is started to drive a first driving screw rod 12 to rotate, the first driving screw rod 12 rotates to drive a first movable plate 9 to move in position, the first movable plate 9 moves in position to drive two ends, hinged to the top end of the first movable plate 9, of two first lifting rods 7 to move synchronously along with the first movable plate 9, the position between the first movable plate 9 and a second fixed plate 81 on the upper side is limited by the first lifting rods 7, the position of one end of each first lifting rod 7 is adjusted, the position of the other end of each first lifting rod 7 can move synchronously, the second fixed plate 81 is driven by the first movable plate 9 to move upwards through the second lifting rods 71, the second fixed plate 81 drives the second fixed plate 3 to horizontally lift, and the height of the LED splicing mounting plate 5 is adjusted;

the positioning mechanisms respectively comprise two first grooves 14 arranged in the U-shaped frame 4, lantern rings 19 are fixedly connected in the two first grooves 14, limiting blocks 18 are respectively connected to the circumferential surfaces of the two lantern rings 19 in a sliding manner, a sliding rod 17 is fixedly connected between the two limiting blocks 18, a buffering sliding groove 16 is formed in the adjusting plate 6, the sliding rod 17 is connected in the buffering sliding groove 16 in a sliding manner, powerful positioning springs 20 are respectively fixedly connected to the top ends of the two limiting blocks 18, the top ends of the two powerful positioning springs 20 are respectively fixedly connected to the upper inner walls of the two first grooves 14, and the two powerful positioning springs 20 are respectively sleeved on the circumferential surfaces of the two lantern rings 19;

each group of extrusion mechanisms comprises a U-shaped groove 21 which is arranged in the U-shaped frame 4 and communicated with the first groove 14, a trapezoidal extrusion block 22 is connected in the U-shaped groove 21 in a sliding manner, a lantern ring 19 is fixedly connected to the circumferential surface of the sliding rod 17, and the lantern ring 19 is connected to the inclined surface of the trapezoidal extrusion block 22 in a sliding manner; the limiting block 18 is pressed downwards through the elasticity of the two strong positioning springs 20, so that the limiting block 18 can keep a relatively stable state when not being pressed by the outside; the two trapezoidal squeezing blocks 22 move to squeeze the two lantern rings 19, the two lantern rings 19 slide along the inclined planes of the trapezoidal squeezing blocks 22, the lantern rings 19 drive the sliding rod 17 to move upwards, the sliding rod 17 moves upwards to squeeze the powerful positioning spring 20, the sliding rod 17 slides in the buffering sliding groove 16 in the upward movement process, the adjusting plate 6 and the rotating shaft 15 are driven to perform circular motion with the center point of the rotating shaft 15 as the circle center, the other end of the adjusting plate 6 is also adjusted in angle, and therefore the display pitching angle of the LED splicing mounting plate 5 is adjusted;

the driving mechanism comprises two third limiting rods 23 fixedly connected in a U-shaped groove 21, the circumferential surfaces of the two third limiting rods 23 are connected with the same threaded plate 25 in a sliding mode, a second driving screw rod 24 is connected in the U-shaped groove 21 in a rotating mode, the threaded plate 25 is connected to the circumferential surface of the second driving screw rod 24 in a threaded mode, the side end of the U-shaped frame 4 is fixedly connected with a second servo driving motor 26, the second servo driving motor 26 is connected with the second driving screw rod 24 through a coupler, and the two trapezoid extrusion blocks 22 are both fixedly connected to the top end of the threaded plate 25; the second servo drive motor 26 is started to drive the second drive screw rod 24 to rotate, the second drive screw rod 24 rotates to drive the thread plate 25 to move in position, the thread plate 25 moves in position to drive the two trapezoidal extrusion blocks 22 to move in position, and the two trapezoidal extrusion blocks 22 move in position to extrude the two lantern rings 19.

In the utility model, when the height of the LED splicing mounting plate 5 needs to be adjusted, the first servo driving motor 10 is started to drive the first driving screw rod 12 to rotate, the first driving screw rod 12 rotates to drive the first movable plate 9 to move in position, the first movable plate 9 moves in position to drive the two ends of the two first lifting rods 7 hinged on the top end of the first movable plate 9 to move in synchronous position along with the first movable plate 9, the position between the first movable plate 9 and the second fixed plate 81 on the upper side is limited by the first lifting rod 7, the position of one end of the first lifting rod 7 is adjusted, the position of the other end of the first lifting rod 7 can move synchronously, the position of the first fixed plate 8 and the second movable plate 91 is connected through the second lifting rod 71, the position adjustment between the second fixed plate 81 and the first movable plate 9 can be changed into the position adjustment of the horizontal height, because the position of the first connecting plate 2 is fixed, the lifting rods cannot move, the first movable plate 9 drives the second fixed plate 81 to move upwards through the first lifting rods 7, the second fixed plate 81 drives the second connecting plate 3 to move horizontally, the height adjustment of the LED splicing mounting plate 5 is completed; the limiting block 18 is pressed downwards through the elasticity of the two strong positioning springs 20, so that the limiting block 18 can keep a relatively stable state when not being subjected to pressure from the outside, the stability of the LED splicing mounting plate 5 in normal use is ensured, the second servo driving motor 26 is started to drive the second driving screw rod 24 to rotate, the second driving screw rod 24 rotates to drive the threaded plate 25 to move in position, the threaded plate 25 moves in position to drive the two trapezoidal extrusion blocks 22 to move in position, the two trapezoidal extrusion blocks 22 move in position to extrude the two lantern rings 19, the two lantern rings 19 slide along the inclined planes of the trapezoidal extrusion blocks 22, the lantern rings 19 drive the sliding rod 17 to move upwards, the sliding rod 17 moves upwards to extrude the strong positioning springs 20, the sliding rod 17 slides in the buffer sliding chute 16 in the upward movement process, the adjusting plate 6 and the rotating shaft 15 are driven to perform circular motion with the center point of the rotating shaft 15 as the center, the other end of the adjusting plate 6 is also adjusted in angle, and the display pitch angle of the LED splicing mounting plate 5 is adjusted.

However, as is well known to those skilled in the art, the working principle and wiring method of the first servo drive motor 10 and the second servo drive motor 26 are common and are conventional means or common knowledge, and will not be described herein, and those skilled in the art can make any choice according to their needs or convenience.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. An LED display screen unit, includes wall mounting bracket (1), its characterized in that: a first connecting plate (2) is fixedly connected to the side end of the wall mounting frame (1), a second connecting plate (3) is arranged on the upper side of the first connecting plate (2), and a group of lifting mechanisms used for driving the second connecting plate (3) to perform height adjustment are arranged between the first connecting plate (2) and the second connecting plate (3);

the top end of the second connecting plate (3) is fixedly connected with a U-shaped frame (4), a rotating shaft (15) is connected in the U-shaped frame (4) in a rotating mode, an adjusting plate (6) is fixedly connected to the circumferential surface of the rotating shaft (15), the side end of the adjusting plate (6) is fixedly connected with an LED splicing mounting plate (5), a group of positioning mechanisms are arranged in the U-shaped frame (4), and the positioning mechanisms are used for limiting the position of the LED splicing mounting plate (5);

both sides in U type frame (4) all are equipped with a set of extrusion mechanism, and are two sets of extrusion mechanism is used for adjusting the demonstration every single move angle of LED concatenation mounting panel (5), be equipped with a set of actuating mechanism that is used for driving two sets of extrusion mechanisms and carries out the motion in U type frame (4).

2. The LED display screen unit according to claim 1, wherein the lifting mechanism comprises a third groove (28) formed in the first connecting plate (2), a second groove (27) is formed in the second connecting plate (3), two first limiting rods (11) are fixedly connected in the third groove (28), two second limiting rods (13) are fixedly connected in the second groove (27), the circumferential surfaces of the two first limiting rods (11) and the two second limiting rods (13) are respectively and fixedly connected with a first fixing plate (8) and a second fixing plate (81), the circumferential surfaces of the two first limiting rods (11) and the two second limiting rods (13) are respectively and slidably connected with a first movable plate (9) and a second movable plate (91), the top end of the first movable plate (9) is movably hinged with two first lifting rods (7) through a hinge shaft, the top ends of the two first lifting rods (7) are movably hinged to the bottom end of the second fixing plate (81), the top end of the first lifting rod (8) is hinged with the bottom end of the two second lifting rods (71) through a hinge shaft, and the top end of the two second lifting rods (71) is hinged to the second movable plate (71).

3. The LED display screen unit according to claim 2, wherein the lifting mechanism further comprises a first driving screw (12) rotatably connected in a third groove (28), the first fixing plate (8) is sleeved on the circumferential surface of the first driving screw (12), the first movable plate (9) is in threaded connection with the circumferential surface of the first driving screw (12), a first servo driving motor (10) is fixedly connected in the third groove (28), and the first servo driving motor (10) is connected with the first driving screw (12) through a coupling.

4. The LED display screen unit according to claim 3, wherein the positioning mechanisms each comprise two first grooves (14) formed in the U-shaped frame (4), two lantern rings (19) are fixedly connected in the two first grooves (14), the circumferential surfaces of the two lantern rings (19) are both slidably connected with a limiting block (18), a sliding rod (17) is fixedly connected between the two limiting blocks (18), a buffer sliding groove (16) is formed in the adjusting plate (6), the sliding rod (17) is slidably connected in the buffer sliding groove (16), the top ends of the two limiting blocks (18) are both fixedly connected with strong positioning springs (20), the top ends of the two strong positioning springs (20) are respectively and fixedly connected to the upper inner walls of the two first grooves (14), and the two strong positioning springs (20) are respectively sleeved on the circumferential surfaces of the two lantern rings (19).

5. The LED display screen unit according to claim 4, wherein each group of the pressing mechanisms comprises a U-shaped groove (21) which is arranged in the U-shaped frame (4) and communicated with the first groove (14), a trapezoid pressing block (22) is connected in the U-shaped groove (21) in a sliding mode, a sleeve ring (19) is fixedly connected to the circumferential surface of the sliding rod (17), and the sleeve ring (19) is connected to the inclined surface of the trapezoid pressing block (22) in a sliding mode.

6. The LED display screen unit according to claim 5, wherein the driving mechanism comprises two third limiting rods (23) fixedly connected in a U-shaped groove (21), the circumferential surfaces of the two third limiting rods (23) are slidably connected with the same threaded plate (25), a second driving screw rod (24) is rotatably connected in the U-shaped groove (21), the threaded plate (25) is in threaded connection with the circumferential surface of the second driving screw rod (24), the side end of the U-shaped frame (4) is fixedly connected with a second servo driving motor (26), the second servo driving motor (26) is connected with the second driving screw rod (24) through a coupler, and the two trapezoid pressing blocks (22) are fixedly connected to the top end of the threaded plate (25).

7. The utility model provides a concatenation formula LED display screen which characterized in that: comprising an LED display screen unit according to any one of claims 1-6.