An easily disassembled LED display screen assembly circuit board installation mechanism

Abstract

The present invention discloses an easily disassembled LED display screen assembly circuit board installation mechanism, and specifically relates to the technical field of electronic accessories. The present invention can smoothly realize exhaust by pressing a control device, and then control a second piston to realize movement, and control the movement operation of a limiting device under the action of air pressure, so that the limiting device and the accommodating device are separated. At this time, the fixing column can be smoothly introduced into the placement cylinder, and reset is completed through the elastic reset of the limiting device. At this time, the limiting device can be stuck in the limiting hole, and then the circuit board position can be locked, so that the circuit board can be quickly installed, and the movement of four limiting devices can be controlled by one operating point, which reduces the difficulty of actual operation, thereby bringing good actual operation value, and avoids the problem of damage to the circuit board caused by snap-fit ​​fixation, which affects the stability of the circuit board, thereby making the use value of the device higher.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic accessories, and more specifically, to an easily disassembled LED display screen assembly circuit board mounting mechanism. Background Art

[0002] The circuit board is mainly composed of pads, vias, mounting holes, wires, components, connectors, fillings, electrical boundaries, etc. It is an essential accessory for some smart electronic products and is widely used. In the process of installing the display screen assembly circuit board, a circuit board mounting mechanism is often required. The circuit board mounting mechanism in the prior art is generally composed of multiple bolts and fixing seats. During installation, tools are used to rotate the bolts to fix the circuit board. This fixing method is not only troublesome to install, but also inconvenient to disassemble. Especially in the process of inspecting the circuit board, tools need to be frequently used to disassemble and assemble the circuit board, which makes the inspection work slower and it is difficult to see whether it is installed in place after the installation is completed. Although some snap-on structures in the prior art are easy to install, they are troublesome to disassemble and are prone to breakage of the snap-on, making it difficult to continue to use the circuit board and easy to fall due to external force. Therefore, it is of great significance to study an easy-to-disassemble LED display screen assembly circuit board mounting mechanism to solve the above problems. Summary of the invention

[0003] In order to overcome the above-mentioned defects of the prior art, the present invention provides an easily disassembled circuit board installation mechanism for assembling an LED display screen. The technical problem to be solved by the present invention is: the circuit board installation mechanism in the prior art is generally composed of a plurality of bolts and a fixing seat. During installation, a tool is used to rotate the bolts to fix the circuit board. This fixing method is not only troublesome to install, but also inconvenient to disassemble. In particular, during the inspection process of the circuit board, tools need to be frequently used to disassemble and assemble the circuit board, which makes the inspection work slower and it is difficult to see whether it is installed in place after the installation is completed. Although some snap-on structures in the prior art are easy to install, they are troublesome to disassemble and may easily cause the snap-on to break, making it difficult to continue to use the circuit board and easy to fall off due to external force.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an easily disassembled LED display assembly circuit board installation mechanism, comprising a circuit board, the lower surface of the circuit board is fixedly connected to the upper surfaces of four fixing columns, the surfaces of the four fixing columns are provided with limiting holes, the four fixing columns are respectively located in four accommodating devices, and one side of the outer surface of the four accommodating devices is respectively connected to the four ends of the installation identification device.

[0005] The installation identification device is connected to four limit devices, one side of the four limit devices is respectively arranged in four limit holes, the upper surface of the installation identification device is fixedly connected to the lower surface of the annular shell, the inner surface of the annular shell is provided with a second piston, the upper surface of the annular shell is connected to one end of the connecting pipe, the other end of the connecting pipe is connected to the surface of the four-way pipe, and the four ports of the four-way pipe are connected to four places on the back of the control device.

[0006] As a further solution of the present invention: the installation identification device includes a rectangular long shell, the upper surface of the rectangular long shell is fixedly connected to the lower surface of the annular shell, third pistons are arranged on both sides of the inner surface of the rectangular long shell, the upper surface of the third piston is fixedly connected to the lower surface of the fluorescent strip, exhaust holes are opened on the left and right sides of the rectangular long shell, the outer surface of the rectangular long shell is connected to one end of four ventilation connecting pipes, and the front and back sides of the rectangular long shell are fixedly connected to two fixing frames.

[0007] As a further solution of the present invention: the accommodating device includes a placing cylinder, the fixing column is arranged in the placing cylinder, the inner surface of the placing cylinder is provided with an annular groove, a positioning rubber strip is provided in the annular groove, the inner surface of the positioning rubber strip is fixedly connected to the outer surface of the fixing column, openings are provided on both sides of the outer surface of the accommodating device, and the lower side of the outer surface of the placing cylinder is connected to the other end of the ventilation connecting pipe.

[0008] As a further solution of the present invention: a sealing plug is provided on the inner surface of the placement tube, the upper surface of the sealing plug overlaps the bottom end of the fixed column, the lower surface of the sealing plug is fixedly connected to one end of the second return spring, and the other end of the second return spring is fixedly connected to the lower surface of the inner wall of the placement tube.

[0009] As a further solution of the present invention: the limiting device includes a connecting shell, the inner surface of the connecting shell is provided with two fourth pistons, one side of the two fourth pistons is fixedly connected to one side of the same limiting frame, the limiting frame is arranged in two openings, the limiting frame is arranged in the limiting hole, the outer surface of the limiting frame is sleeved with two sealing sleeves, the two sealing sleeves are both clamped on one side of the connecting shell, one side of the outer surface of the two sealing sleeves is respectively fixedly connected to one end of two first return springs, and the other ends of the two first return springs are respectively fixedly connected to one side of the two fourth pistons.

[0010] As a further solution of the present invention: the lower surface of the connecting shell is fixedly connected to one side of the fixing frame, the lower surface of the connecting shell is connected to one end of the gas pipe, the other end of the gas pipe is connected to the lower surface of the annular shell, one side of the connecting shell is connected to one end of the shunt pipe, and the other end of the shunt pipe is connected to the surface of the ventilation connecting pipe.

[0011] As a further solution of the present invention: the control device includes a rectangular control shell, the back of which is fixedly connected to the fronts of two support columns, the two support columns are respectively located on the left and right sides of the back of the rectangular control shell, the backs of the two support columns are respectively fixedly connected to the fronts of two placement tubes, and the four positions on the back of the rectangular control shell are respectively connected to the four ports of the four-way pipe.

[0012] As a further solution of the present invention: four first pistons are arranged on the inner surface of the rectangular control housing, and the upper surfaces of the four first pistons are fixedly connected to the lower surfaces of four operating blocks respectively.

[0013] The beneficial effects of the present invention are:

[0014] 1. The present invention can smoothly exhaust air by pressing the control device, thereby controlling the second piston to move, and controlling the movement of the limit device under the action of air pressure, so that the limit device and the accommodating device can be separated. At this time, the fixing column can be smoothly introduced into the placement cylinder, and the limit device can be reset through the elastic reset property. At this time, the limit device can be inserted into the limit hole, thereby locking the position of the circuit board, so that the circuit board can be quickly installed. Moreover, the movement of four limit devices can be controlled by one operating point, which reduces the difficulty of actual operation, thereby bringing good actual operation value, and avoids the problem that the circuit board stability is easily damaged by snap-fit ​​fixation, thereby making the use value of the device higher;

[0015] 2. The present invention introduces the fixed column into the placement tube, and at this time the fixed column squeezes the sealing plug to move, and the sealing plug exhausts air through the ventilation connecting pipe, so that the gas enters the rectangular long shell. At the same time, during the reset process of the fourth piston, the gas inside the shell can smoothly enter the ventilation connecting pipe through the shunt pipe and be discharged into the rectangular long shell again, and then under the action of the air pressure, the third piston is displaced, and then the third piston is moved to one side of the rectangular long shell. At the same time, the position of the third piston can be easily observed through the transparency of the rectangular long shell and the recognition of the fluorescent strip. When the fluorescent strip can be fully seen, it can be known that the installation of the circuit board is in place, avoiding the problem of poor stability of the circuit board caused by improper installation or operation;

[0016] 3. The present invention is designed with four operating blocks, and then by controlling the four operating blocks at the same time, the movement of the four first pistons can be smoothly controlled, thereby increasing the discharge of gas and effectively realizing the work of controlling the movement of the second piston, and avoiding the operation of operating a single operating block to realize the control operation. Therefore, the control operation can be realized by operating the four operating blocks at the same time, which can solve the problem of preventing accidental touch. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0018] Figure 2 It is a schematic diagram of a three-dimensional cross-sectional structure of the present invention when viewed from above;

[0019] Figure 3 It is a schematic diagram of a three-dimensional cross-sectional structure of the installation marking device of the present invention;

[0020] Figure 4 It is a three-dimensional structural schematic diagram of the annular shell of the present invention;

[0021] Figure 5 It is a schematic diagram of a three-dimensional cross-sectional structure of the containing device of the present invention;

[0022] Figure 6 It is a schematic diagram of the three-dimensional structure of the circuit board of the present invention when viewed from above;

[0023] Figure 7 It is a schematic diagram of a three-dimensional cross-sectional structure of the limiting device of the present invention;

[0024] Figure 8 It is a schematic diagram of the three-dimensional cross-sectional structure of the annular shell of the present invention;

[0025] Fig. 9 It is a schematic diagram of a three-dimensional cross-sectional structure of the control device of the present invention;

[0026] In the figure: 1 circuit board, 2 annular shell, 3 connecting pipe, 4 four-way pipe, 5 control device, 51 rectangular control shell, 52 operating block, 53 first piston, 54 support column, 6 second piston, 7 installation identification device, 71 rectangular long shell, 72 ventilation connecting pipe, 73 fluorescent strip, 74 third piston, 75 exhaust through hole, 76 fixing frame, 8 limiting device, 81 connecting shell, 82 fourth piston, 83 first return spring, 84 sealing sleeve, 85 limiting frame, 86 shunt pipe, 87 gas transmission pipe, 9 accommodating device, 91 placing cylinder, 92 annular groove, 93 sealing plug, 94 second return spring, 95 opening, 10 fixing column, 11 limiting hole, 12 positioning rubber strip. DETAILED DESCRIPTION

[0027] 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.

[0028] like Figure 1-9 As shown, the present invention provides an easily disassembled LED display assembly circuit board installation mechanism, including a circuit board 1, the lower surface of the circuit board 1 is fixedly connected to the upper surfaces of four fixing columns 10, and the surfaces of the four fixing columns 10 are provided with limiting holes 11. By providing the limiting holes 11, a fixing point can be provided for the limiting frame 85. The four fixing columns 10 are respectively located in four accommodating devices 9, and one side of the outer surface of the four accommodating devices 9 is respectively connected to the four ends of the installation identification device 7.

[0029] The installation identification device 7 is connected with the four limit devices 8, one side of the four limit devices 8 is respectively arranged in the four limit holes 11, the upper surface of the installation identification device 7 is fixedly connected with the lower surface of the annular shell 2, the inner surface of the annular shell 2 is provided with a second piston 6, the upper surface of the annular shell 2 is connected with one end of the connecting pipe 3, and the connecting pipe 3 and the four-way pipe 4 are arranged, so that the connecting pipe 3 and the four-way pipe 4 can smoothly realize the connection between the annular shell 2 and the rectangular control shell 51, so that the gas can be transmitted over a long distance, the other end of the connecting pipe 3 is connected with the surface of the four-way pipe 4, and the four ports of the four-way pipe 4 are connected with four places on the back of the control device 5.

[0030] like Figure 2 and Figure 3As shown, the installation identification device 7 includes a rectangular long shell 71, the upper surface of the rectangular long shell 71 is fixedly connected to the lower surface of the annular shell 2, and the rectangular long shell 71 is provided, and the two sides of the rectangular long shell 71 are transparent, so as to facilitate the observation of the movement position of the internal third piston 74, and the third piston 74 is provided on both sides of the inner surface of the rectangular long shell 71, and the upper surface of the third piston 74 is fixedly connected to the lower surface of the fluorescent strip 73, and the fluorescent strip 73 is provided so that the fluorescent strip 73 has a bright color, so as to facilitate the identification of the staff, and the left side and the right side of the rectangular long shell 71 are provided with exhaust holes 75, and the exhaust holes 75 are provided. 5, so that the exhaust through hole 75 can ensure the flow of air inside the rectangular long shell 71 and the outside air, so that the third piston 74 can smoothly realize the movement work, the outer surface of the rectangular long shell 71 is connected with one end of the four ventilation connecting pipes 72, and the ventilation connecting pipes 72 are provided, so that the ventilation connecting pipes 72 can ensure the communication work between the rectangular long shell 71 and the placement cylinder 91, and the exhaust work can be smoothly performed. The front and back sides of the rectangular long shell 71 are fixedly connected with two fixing frames 76. By providing the fixing frames 76, the fixing frames 76 can play a role in fixing the connection shell 81, thereby ensuring the stability of the placement of the connection shell 81.

[0031] like Figure 4 , Figure 5 and Figure 6 As shown, the accommodating device 9 includes a placement cylinder 91. By setting the placement cylinder 91, the placement cylinder 91 can realize the work of accommodating and placing the fixed column 10. The fixed column 10 is set in the placement cylinder 91. The inner surface of the placement cylinder 91 is provided with an annular groove 92. By setting a positioning rubber strip 12 and the annular groove 92, and the annular groove 92 can serve as a positioning point for the positioning rubber strip 12, and the positioning rubber strip 12 can be inserted into the annular groove 92 through deformation recovery, so as to play a positioning role for the fixed column 10. A positioning rubber strip 12 is provided in the annular groove 92, and the inner surface of the positioning rubber strip 12 is fixedly connected to the outer surface of the fixed column 10. Openings 95 are provided on both sides of the outer surface of the accommodating device 9. An opening 95 is opened so that the opening 95 can provide a movable point for the limit frame 85 to ensure the smooth sliding of the limit frame 85, so that the limit frame 85 can be smoothly inserted into the limit hole 11, and the lower side of the outer surface of the placement tube 91 is connected to the other end of the ventilation connecting pipe 72, and the inner surface of the placement tube 91 is provided with a sealing plug 93, the upper surface of the sealing plug 93 overlaps the bottom end of the fixed column 10, and the lower surface of the sealing plug 93 is fixedly connected to one end of the second return spring 94. By setting the second return spring 94 and the sealing plug 93, the elastic force of the second return spring 94 can push the sealing plug 93 to return to its original position upward smoothly, and the other end of the second return spring 94 is fixedly connected to the lower surface of the inner wall of the placement tube 91.

[0032] like Figure 7 As shown, the limiting device 8 includes a connecting shell 81, and two fourth pistons 82 are arranged on the inner surface of the connecting shell 81, and one side of the two fourth pistons 82 is fixedly connected to one side of the same limiting frame 85. The limiting frame 85 is arranged in the two openings 95, and the limiting frame 85 is arranged in the limiting hole 11. The outer surface of the limiting frame 85 is sleeved with two sealing sleeves 84. By arranging the sealing sleeve 84, the sealing sleeve 84 can guide the limiting frame 85, so that the limiting frame 85 can slide smoothly. At the same time, the sealing sleeve 84 can ensure the sealing between the limiting frame 85, thereby avoiding the problem of air leakage. The two sealing sleeves 84 are both clamped on one side of the connecting shell 81, and one side of the outer surface of the two sealing sleeves 84 is respectively fixedly connected to one end of the two first return springs 83. By arranging the first return spring 83, the elastic force of the first return spring 83 can drive the limiting frame 85 to reset, so that the limiting frame 85 can be smoothly Entering into the limiting hole 11, it can lock the fixed column 10 to prevent the fixed column 10 from separating from the placing cylinder 91. The other ends of the two first return springs 83 are fixedly connected to one side of the two fourth pistons 82 respectively, and the lower surface of the connecting shell 81 is fixedly connected to one side of the fixing frame 76. The lower surface of the connecting shell 81 is connected to one end of the gas pipe 87. By setting the gas pipe 87, the gas pipe 87 can remove the connection operation between the annular shell 2 and the connecting shell 81, so that the gas can be smoothly circulated and discharged. The other end of the gas pipe 87 is connected to the lower surface of the annular shell 2, and one side of the connecting shell 81 is connected to one end of the shunt pipe 86. By setting the shunt pipe 86, the shunt pipe 86 can connect the ventilation connecting pipe 72 with the connecting shell 81, so that the gas can be smoothly transported. The other end of the shunt pipe 86 is connected to the surface of the ventilation connecting pipe 72.

[0033] like Fig. 9 As shown, the control device 5 includes a rectangular control shell 51, the back of which is fixedly connected to the front of two support columns 54. By setting the support columns 54, the support columns 54 can connect and fix the rectangular control shell 51, thereby ensuring the stability of the rectangular control shell 51. The two support columns 54 are respectively located on the left and right sides of the back of the rectangular control shell 51, and the backs of the two support columns 54 are respectively fixedly connected to the fronts of the two placement cylinders 91. Four positions on the back of the rectangular control shell 51 are respectively connected to the four ports of the four-way pipe 4. Four first pistons 53 are provided on the inner surface of the rectangular control shell 51, and the upper surfaces of the four first pistons 53 are respectively fixedly connected to the lower surfaces of four operating blocks 52. By setting the operating blocks 52, the operating blocks 52 can provide force points for the staff, thereby facilitating the staff to control the movement of the first pistons 53.

[0034] Working principle of the present invention:

[0035] S1. During disassembly, first press the four operating blocks 52 downward, so that the four operating blocks 52 push the first piston 53 to move downward, so that the first piston 53 discharges the gas into the four-way pipe 4 and the connecting pipe 3, so that the gas enters the annular housing 2 through the connecting pipe 3, and then the second piston 6 moves, so that the second piston 6 presses the gas inside the annular housing 2 into the gas delivery pipe 87, so that the gas delivery pipe 87 delivers the gas into the rectangular control shell 51, so that the fourth piston 82 moves, so that the fourth piston 82 drives the limit frame 85 to move, so that the limit frame 85 is separated from the limit hole 11, and at the same time the limit frame 85 is separated from the opening 95, and then the fixing column 10 can be taken out from the placement tube 91;

[0036] S2. During installation, first press the four operating blocks 52 downward to control the first piston 53 to move downward, and then air is inletted and exhausted through the four-way pipe 4 and the connecting pipe 3. Under the action of air pressure, the second piston 6 moves, so that the second piston 6 presses the gas into the rectangular control shell 51 through the gas pipe 87, so that the fourth piston 82 moves, so that the fourth piston 82 drives the limit frame 85 to move, so that the first return spring 83 is deformed, so that the limit frame 85 is separated from the opening 95. At this time, the circuit board 1 can be held to guide the fixed column 10 into the placement tube 91, so that the fixed column 10 squeezes the sealing plug 93 to move downward, so that the sealing plug 93 presses the gas into the ventilation connecting pipe 72, so that the gas is discharged into the rectangular long shell 71, and when the limit hole 11 of the fixed column 10 corresponds to the position of the opening 95;

[0037] S3. Finally, release the operating block 52. At this time, the elastic force of the first reset spring 83 can drive the fourth piston 82 to reset, so that the fourth piston 82 drives the limit frame 85 to move, so that the limit frame 85 enters the opening 95 and is stuck in the limit hole 11, so that the position of the fixed column 10 is fixed. At the same time, during the resetting process of the fourth piston 82, the fourth piston 82 discharges the gas into the ventilation connecting pipe 72 through the shunt pipe 86 and enters the rectangular long shell 71 again, thereby causing the third piston 74 to move, and the position of the fluorescent strip 73 is observed through the transparency of the rectangular long shell 71. When the fluorescent strip 73 is completely visible, it is known that the circuit board 1 is installed in place.

[0038] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0039] Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0040] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An easily disassembled LED display assembly circuit board installation mechanism, comprising a circuit board (1), characterized in that: The lower surface of the circuit board (1) is fixedly connected to the upper surfaces of the four fixing columns (10), the surfaces of the four fixing columns (10) are provided with limiting holes (11), the four fixing columns (10) are respectively located in four accommodating devices (9), and one side of the outer surface of the four accommodating devices (9) is respectively connected to the four ends of the installation identification device (7); The installation identification device (7) is connected to four limit devices (8), one side of the four limit devices (8) is respectively arranged in four limit holes (11), the upper surface of the installation identification device (7) is fixedly connected to the lower surface of the annular shell (2), the inner surface of the annular shell (2) is provided with a second piston (6), the upper surface of the annular shell (2) is connected to one end of the connecting pipe (3), the other end of the connecting pipe (3) is connected to the surface of the four-way pipe (4), and the four ports of the four-way pipe (4) are connected to four places on the back of the control device (5).

2. The easily detachable LED display assembly circuit board installation mechanism according to claim 1, characterized in that: The installation identification device (7) comprises a rectangular long shell (71), the upper surface of the rectangular long shell (71) is fixedly connected to the lower surface of the annular shell (2), third pistons (74) are provided on both sides of the inner surface of the rectangular long shell (71), the upper surface of the third piston (74) is fixedly connected to the lower surface of the fluorescent strip (73), the left side and the right side of the rectangular long shell (71) are provided with exhaust holes (75), the outer surface of the rectangular long shell (71) is connected to one end of four ventilation connecting pipes (72), and the front and back sides of the rectangular long shell (71) are fixedly connected to two fixing frames (76).

3. The easily detachable LED display assembly circuit board installation mechanism according to claim 2, characterized in that: The accommodating device (9) comprises a placement tube (91), the fixing column (10) is arranged in the placement tube (91), the inner surface of the placement tube (91) is provided with an annular groove (92), a positioning rubber strip (12) is arranged in the annular groove (92), the inner surface of the positioning rubber strip (12) is fixedly connected to the outer surface of the fixing column (10), openings (95) are provided on both sides of the outer surface of the accommodating device (9), and the lower side of the outer surface of the placement tube (91) is connected to the other end of the ventilation connecting pipe (72).

4. The easily detachable LED display assembly circuit board installation mechanism according to claim 3, characterized in that: The inner surface of the placement tube (91) is provided with a sealing plug (93), the upper surface of the sealing plug (93) overlaps the bottom end of the fixed column (10), the lower surface of the sealing plug (93) is fixedly connected to one end of a second return spring (94), and the other end of the second return spring (94) is fixedly connected to the lower surface of the inner wall of the placement tube (91).

5. The easily detachable LED display assembly circuit board installation mechanism according to claim 3, characterized in that: The limiting device (8) comprises a connecting shell (81), the inner surface of which is provided with two fourth pistons (82), one side of the two fourth pistons (82) being fixedly connected to one side of the same limiting frame (85), the limiting frame (85) being arranged in two openings (95), the limiting frame (85) being arranged in a limiting hole (11), the outer surface of the limiting frame (85) being sleeved with two sealing sleeves (84), the two sealing sleeves (84) being clamped on one side of the connecting shell (81), one side of the outer surface of the two sealing sleeves (84) being fixedly connected to one end of two first return springs (83) respectively, and the other ends of the two first return springs (83) being fixedly connected to one side of the two fourth pistons (82) respectively.

6. The easily detachable LED display screen assembly circuit board installation mechanism according to claim 5, characterized in that: The lower surface of the connecting shell (81) is fixedly connected to one side of the fixing frame (76), the lower surface of the connecting shell (81) is connected to one end of the gas supply pipe (87), the other end of the gas supply pipe (87) is connected to the lower surface of the annular shell (2), one side of the connecting shell (81) is connected to one end of the shunt pipe (86), and the other end of the shunt pipe (86) is connected to the surface of the ventilation connecting pipe (72).

7. The easily detachable LED display screen assembly circuit board installation mechanism according to claim 3, characterized in that: The control device (5) comprises a rectangular control shell (51), the back side of the rectangular control shell (51) being fixedly connected to the front sides of two support columns (54), the two support columns (54) being respectively located on the left and right sides of the back side of the rectangular control shell (51), the back sides of the two support columns (54) being respectively fixedly connected to the front sides of two placement cylinders (91), and four positions on the back side of the rectangular control shell (51) being respectively connected to the four ports of the four-way pipe (4).

8. The easily detachable LED display screen assembly circuit board installation mechanism according to claim 7, characterized in that: Four first pistons (53) are arranged on the inner surface of the rectangular control housing (51), and the upper surfaces of the four first pistons (53) are respectively fixedly connected to the lower surfaces of four operating blocks (52).

Images