Intelligent remote power-on control module and LED display screen distribution box

Abstract

This utility model belongs to the field of LED display technology, and relates to an intelligent remote power-on control module and an LED display power distribution box. The intelligent remote power-on control module has convex side walls on the rear shell with guide strips, and a first circuit board with a slot. During assembly, the first circuit board is snapped into the rear shell and abuts against the front edge of the rear shell, so that the terminals of the first circuit board protrude from the shell formed by the front and rear shells. The second circuit board is installed on the front side of the first circuit board, and the front and rear shells are snapped together. The control buttons of the second circuit board extend from the front shell. The advantages are that the positioning and assembly of the intelligent remote power-on control module are convenient, requiring no screws or tools for installation and fixing, thus solving the technical problem of cumbersome assembly of existing power-on controllers. The LED display power distribution box uses the intelligent remote power-on control module in conjunction with a control system to achieve remote intelligent power-on of the LED display.

Description

Technical Field

[0001] This utility model relates to the field of power distribution box technology, and in particular to an intelligent remote power-on control module and an LED display power distribution box. Background Technology

[0002] With the development of technology, LED displays are being used more and more widely in various occasions, such as advertising media, sports events, and traffic guidance. However, in the existing LED display technology, the power supply controller structure of the distribution box is relatively complex, and the assembly operation is somewhat difficult, resulting in low efficiency in installation and maintenance.

[0003] Currently, LED display power distribution boxes on the market typically consist of an upper shell, a lower shell, a main control module, and a communication module. Connecting and installing these components requires screws or other fixing methods, making assembly and disassembly cumbersome, time-consuming, and labor-intensive. Furthermore, existing power controllers have limitations in remote control, failing to provide convenient and quick remote power-on or power-off operations. Utility Model Content

[0004] (a) Technical problems to be solved In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides an intelligent remote power-on control module and an LED display distribution box, which solves the technical problem that the power-on controller of the existing LED display distribution box has a relatively complex structure and is troublesome to assemble and operate.

[0005] (II) Technical Solution To achieve the above objectives, the main technical solutions adopted by this utility model include: In a first aspect, this utility model provides an intelligent remote power-on control module for a power distribution box of an LED display screen, including a rear shell, a main control unit and a front shell. The main control unit includes a first circuit board, a second circuit board, a programmable logic controller, a microprocessor, a memory and a communication module disposed on the first circuit board. The rear shell and the front shell are snapped together and form the housing space of the main control unit. The second circuit board is placed in front of the first circuit board and is connected to the first circuit board by electrical signals. The control buttons on the front of the second circuit board extend out from the front shell. The left and right side panels of the rear shell are convex in shape, and the inner walls of the left and right are provided with guide strips. The two opposite sides of the first circuit board are provided with slots that are compatible with the guide strips. The first circuit board moves along the guide strips so that its upper and lower edges abut against the front end of the upper and lower side panels of the rear shell. The signal terminals of the first circuit board are exposed on the outside of the rear shell.

[0006] Optionally, a space is reserved between the first circuit board and the rear side wall of the rear shell, and the upper and lower side walls of the rear shell are provided with heat dissipation holes.

[0007] Optionally, the front cover is I-shaped, with flip covers rotatably connected to its upper and lower sides.

[0008] Optionally, the front shell is provided with a fastening groove, and the rear shell is provided with a corresponding buckle, so that the front shell and the rear shell are fastened together.

[0009] Secondly, this utility model embodiment provides an LED display screen power distribution box, which is used in conjunction with a control system to realize remote power-on or power-off, including the aforementioned intelligent remote power-on control module, waterproof door panel, main shell of the box, control execution unit, power-on and protection unit and sensing system; The waterproof door panel is hinged to the main shell of the enclosure, and the intelligent remote power-on control module, power-on and protection unit and sensing system are installed in the main shell of the enclosure.

[0010] Optionally, the power-on and protection unit includes a mounting plate, a main circuit breaker and branch circuit breakers fixed on the mounting plate, the main circuit breaker being electrically connected to the intelligent remote power-on control module, the main circuit breaker being equipped with an electric operating mechanism, and the branch circuit breakers being connected in series with the main circuit breaker. The control execution unit includes, but is not limited to, relays and contactors. The input terminal of the relay is electrically connected to the output terminal of the microprocessor to receive instructions for step-by-step power-on. The output terminal of the relay drives the contactor coil, and the main contacts of the contactor control the power supply of the branch circuit breaker and the main circuit breaker to realize remote step-by-step closing.

[0011] Optionally, the power-on and protection unit also includes a residual current device (RCD), which is mounted on a mounting plate and whose signal input terminal is connected to the fault detection terminal of the intelligent remote power-on control module.

[0012] Optionally, the distribution box is also equipped with a maintenance socket, which is mounted on the mounting plate. The maintenance socket is connected to the output terminal of the microprocessor via a relay, which is used to control the power supply to the maintenance socket.

[0013] Optionally, a button panel is installed on the waterproof door panel. The button panel has panel indicator lights and panel buttons, and the button panel is electrically connected to the intelligent remote power-on control module.

[0014] (III) Beneficial Effects The beneficial effects of this utility model are: 1. This utility model discloses an intelligent remote power-on control module and an LED display distribution box. The intelligent remote power-on control module has a U-shaped rear shell with guide strips on the left and right sides and a slot on the inner wall. During assembly, the first circuit board is first snapped into place with the rear shell, and the upper and lower edges of the first circuit board abut against the front end of the rear shell, allowing the terminals of the first circuit board to protrude from the shell formed by the front and rear shells. The second circuit board is installed in front of the first circuit board, and the front shell is pressed against the front of the second circuit board and snapped into place with the rear shell. The control buttons of the second circuit board extend from the front shell. Compared with existing technologies, the intelligent remote power-on control module is easier to position and assemble. Installation can be completed simply by holding the first circuit board and sliding it along the guide strips. The front and rear shells are snapped together without the need for screws, solving the technical problem of cumbersome assembly operations in existing power-on controllers.

[0015] 2. Because the LED display distribution box adopts an intelligent remote power-on control module, when used with the control system, it can remotely control the LED display distribution box to power on or off the LED display, making it more convenient to use.

[0016] 3. The main circuit breaker is equipped with an electric operating mechanism. When the control system sends a power-on signal to the intelligent remote power-on control module, the module sends a signal to the electric operating mechanism of the main circuit breaker, thereby opening the main circuit breaker and connecting the circuit. The intelligent remote power-on control module outputs signals according to a preset timing sequence, sequentially and at intervals driving the electromagnetic coils of the contactors of each branch circuit breaker, causing the main contacts of the contactors to close and connect the circuit, thus supplying power to the corresponding LED display cabinet. Each branch circuit breaker corresponds to a set of LED display cabinets, realizing automatic power-on and step-by-step delayed power-on, protecting the LED display screen.

[0017] 4. The LED display power distribution box of this application adopts a sensing system, including but not limited to temperature sensors and smoke sensors. The sensing system is electrically connected to the intelligent remote power-on control module to achieve intelligent operation and enhance safety.

[0018] 5. Because there is a reserved space between the first circuit board and the rear side wall of the rear shell, and the upper and lower side walls of the rear shell are provided with heat dissipation holes, the heat dissipation effect of the intelligent remote power-on control module is better. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of the controller of Embodiment 1 of the present invention, which is an intelligent remote power-on control module and an LED display distribution box. Figure 2 This is an exploded view of the controller in Embodiment 1 of the present invention, which is an intelligent remote power-on control module and an LED display distribution box. Figure 3This is a three-dimensional schematic diagram of the distribution box of Embodiment 2 of the present invention, which is an intelligent remote power-on control module and an LED display distribution box. Figure 4 This is an exploded view of the distribution box portion of Embodiment 2 of the present invention, which describes an intelligent remote power-on control module and an LED display distribution box. Figure 5 This is an exploded view of the intelligent power distribution board assembly of the power distribution box in Embodiment 2 of the present invention, which is an intelligent remote power-on control module and an LED display power distribution box. Figure 6 This is a front view of the distribution box (door panel not shown) of Embodiment 2 of the present invention, which is an intelligent remote power-on control module and an LED display distribution box. Figure 7 This is a three-dimensional schematic diagram of the intelligent power distribution board assembly of the power distribution box in Embodiment 3 of the present invention, which is an intelligent remote power-on control module and an LED display power distribution box. Figure 8 This is an exploded view of the intelligent power distribution board assembly of the power distribution box in Embodiment 3 of the present invention, which is an intelligent remote power-on control module and an LED display power distribution box.

[0020] [Explanation of Labels in the Attached Image] 1. Controller; 11. Rear shell; 111. Heat dissipation vent; 112. Guide strip; 113. Buckle; 114. Limiting post; 120. First circuit board; 121. Slot; 122. Signal terminal; 123. Second circuit board; 1231. Signal indicator light; 1232. Control button; 13. Front shell; 131. Fastening slot; 14. Flip cover; 2. Button panel; 21. Panel indicator lights; 22. Panel buttons; 3. Waterproof door panel; 31. Door lock; 4. Main casing of the enclosure; 41. Cable inlet; 42. Cable outlet pressure plate; 43. Door hinge; 51. Main circuit breaker; 52. Branch circuit breaker; 53. Residual current circuit breaker; 6. Repairing sockets; 7. Neutral bus and protective grounding terminal; 8. Terminal blocks; 81. Cover plate; 9. Mounting plate; 91. Limiting component; 92. Cable tray. Detailed Implementation

[0021] To better explain and facilitate understanding of this utility model, a detailed description of its specific embodiments is provided below with reference to the accompanying drawings. In this document, directional terms such as "upper" and "lower" are used interchangeably with... Figure 4Taking the orientation as a reference, the direction of the waterproof door panel 3 is "front", the direction of the main shell 4 is "rear", the direction of the inlet 41 is "up", and the direction of the outlet pressure plate 42 is "down".

[0022] This utility model provides an intelligent remote power-on control module and an LED display power distribution box. The intelligent remote power-on control module includes a rear shell, a main control unit, and a front shell. The main control unit includes a first circuit board, a second circuit board, a programmable logic controller, a microprocessor, a memory, and a communication module mounted on the first circuit board. Because the left and right side walls of the rear shell of the intelligent remote power-on control module are convex and the inner wall has guide strips, and the first circuit board has a slot, during assembly, the first circuit board is first snapped into place with the rear shell and abuts against the front edge of the rear shell, so that the wiring terminals of the first circuit board protrude from the shell formed by the front and rear shells. The second circuit board is installed in front of the first circuit board, and the front shell presses against the front of the second circuit board and connects to the rear shell. The control buttons of the second circuit board extend from the front shell. Compared with the prior art, the positioning and assembly of the circuit board of the intelligent remote power-on control module are convenient, and it does not require screws for installation and fixation, solving the technical problems of complex structure and cumbersome assembly of existing power-on controllers.

[0023] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.

[0024] Example 1:

[0025] Reference Figures 1 to 2 This embodiment 1 provides an intelligent remote power-on control module for the power distribution box of an LED display screen, including a rear shell 11, a main control unit, and a front shell 13. The main control unit includes a first circuit board 120, a second circuit board 123, a programmable logic controller 1, a microprocessor, a memory, and a communication module mounted on the first circuit board 120. The communication module includes multiple signal terminals 122.

[0026] The rear shell 11 is connected to the front shell 13 by a snap-fit ​​113, forming the accommodating space of the main control unit. The second circuit board 123 is placed in front of the first circuit board 120 and is electrically connected to the first circuit board 120. The control button 1232 on the front of the second circuit board 123 extends from the middle of the front shell 13. The left and right side panels of the rear shell 11 are convex in shape, and the left and right inner walls are provided with limiting posts 114 and four guide strips 112. The two opposite sides of the first circuit board 120 are provided with slots 121 that are adapted to the guide strips 112. The left and right sides of the first circuit board 120 move along the guide strips 112 so that its upper and lower edges abut against the front end of the upper and lower side panels of the rear shell 11. The signal terminals 122 on the first circuit board 120 are exposed outside the rear shell 11 for easy cable connection.

[0027] During installation, the first circuit board 120 slides into the guide strip 112 of the rear shell 11 until it abuts against the limiting post 114 on the rear shell 11 and stops sliding. The slot 121 engages with the guide strip 112, and the front edge of the first circuit board 120 abuts against the front edge of the rear shell 11, exposing the signal terminal 122. The second circuit board 123 is mounted on the front side of the first circuit board 120 and electrically connected to it via pin headers. The front shell 13 is placed on the front end of the second circuit board 123 and connected to the latch 113 of the rear shell 11. The control button 1232 extends out of the front shell 13 through the pre-drilled hole in the middle of the front shell 13, and the fastening groove 131 of the front shell 13 locks with the latch 113 of the rear shell 11. The slot 121 of the first circuit board 120 engages with the guide strip 112 of the rear shell 11 and is clamped between the front shell 13 and the rear shell 11 for fixation. No screws or tools are required, making it more convenient.

[0028] See Figure 2 There is a space reserved between the first circuit board 120 and the rear side wall of the rear shell 11, and multiple heat dissipation holes 111 are evenly provided on the upper and lower side walls of the rear shell 11 to facilitate heat dissipation of the intelligent remote power-on control module and achieve better heat dissipation effect.

[0029] See Figure 2 The front cover 13 is in the shape of an I-beam, and its upper and lower sides are connected to the flip cover 14 by a pivot.

[0030] See Figure 1 and Figure 2 In some feasible solutions, the front shell 13 is provided with a fastening groove 131, and the rear shell 11 is provided with a corresponding buckle 113, so that the front shell 13 and the rear shell 11 are fastened together.

[0031] In practical applications, the second circuit board 123 is equipped with a signal indicator light 1231, which extends from the middle of the front cover 13.

[0032] Example 2:

[0033] Reference Figures 3 to 6 This embodiment 2 provides an LED display screen power distribution box, which is used in conjunction with a control system to realize remote power-on or power-off. It includes the aforementioned intelligent remote power-on control module, waterproof door panel 3, main shell 4, power-on and protection unit and sensing system. The waterproof door panel 3 is hinged to the main shell 4. The intelligent remote power-on control module, control execution unit, power-on and protection unit and sensing system are installed in the main shell 4.

[0034] A door lock 31 is provided on one side of the waterproof door panel 3 to lock the waterproof door panel 3 to the main shell 4 of the enclosure. The door lock 31 is a commercially available product and will not be described in detail here. The upper end of the main shell 4 of the enclosure has a cable inlet 41 and the lower end has a cable outlet. A cable outlet pressure plate 42 is installed at the cable outlet to fix and press the cable. A door hinge 43 is provided on one side of the main shell 4 of the enclosure, and the waterproof door panel 3 and the main shell 4 of the enclosure are hinged together by the door hinge 43.

[0035] The control execution unit includes, but is not limited to, relays and contactors. The input terminal of the relay is electrically connected to the output terminal of the microprocessor to receive the step-by-step power-on command. The output terminal of the relay drives the contactor coil. The main contacts of the contactor control the power supply of the branch circuit breaker 52 and the main circuit breaker 51 to realize remote step-by-step closing.

[0036] See Figure 4 In some feasible solutions, the power-on and protection unit includes a mounting plate 9, a main circuit breaker 51 fixed on the mounting plate 9, and several branch circuit breakers 52. The main circuit breaker 51 is electrically connected to the intelligent remote power-on control module, and the branch circuit breakers 52 are connected in series with the main circuit breaker 51. The mounting plate 9 is provided with a limiting member 91 and a cable tray 92. The limiting member 91 provides positions for the installation of the intelligent remote power-on control module, the main circuit breaker 51, the branch circuit breakers 52, the residual current device (RCD) 53, and the maintenance socket 6, and limits their movement. The cable tray 92 is used to store cables. The lower end of the mounting plate 9 is provided with a neutral busbar and protective grounding terminal 7 and a terminal block 8. A cover plate 81 is rotatably connected to the front of the terminal block 8. The neutral busbar and protective grounding terminal 7 includes a neutral busbar (N) on the left and a protective grounding busbar (PE) on the right, with a distance of ≥50mm between them.

[0037] During operation, the microprocessor of the intelligent remote power-on control module receives remote commands from the control system (host computer), drives the main circuit relay to close, and triggers the main circuit contactor to engage. The main contacts of this contactor supply power to the electric operating mechanism of the main circuit air switch 51, and the main circuit air switch 51 closes to energize the main circuit. The microprocessor outputs grouped signals according to a preset timing sequence to sequentially control the contactors of each branch circuit air switch 52 to close, energizing each branch circuit. The closing interval of each branch circuit air switch 52 is 2-5 seconds, achieving step-by-step power-on. The branch circuit air switches 52 are mechanical series structures, connected in series in the main circuit of the contactor, and are controlled by the power supply of the output terminal of the main circuit air switch 51, providing only overload protection. One branch circuit air switch 52 is connected to a set of LED display boxes via a cable. Branch circuit breaker 52 is equipped with an electromagnetic contactor, the coil of which is connected to the output terminal of the intelligent remote power-on control module. The electric operating mechanism of the main circuit breaker 51 includes components such as a micro motor, a reduction gearbox, a crank connecting rod, and a position sensor. It converts control signals (low voltage) into mechanical force to drive the switch action, realizing remote automatic closing / opening. The main circuit breaker 51 and the branch circuit breaker 52 are existing products on the market and will not be described in detail here.

[0038] See Figure 4 A button panel 2 is installed on the waterproof door panel 3. The button panel 2 has panel indicator lights 21 and panel buttons 22. The button panel 2 is electrically connected to the intelligent remote power-on control module. The button panel 2 includes a display panel, a circuit board, panel indicator lights 21, and panel buttons 22. Various control parameters can be adjusted by operating the button panel 22 on the button panel without opening the waterproof door panel 3, making operation more convenient.

[0039] In use, the temperature sensor is attached to the heat dissipation surface of the power device to collect the temperature in real time and transmit the temperature signal to the microprocessor. When the temperature reaches the preset temperature, the microprocessor sends an interrupt signal to force the relay drive circuit to disconnect. The smoke sensor inputs the smoke signal to the programmable logic controller 1, which processes the signal and sends an alarm signal to the microprocessor. The microprocessor then disconnects the relay to achieve automatic power-off.

[0040] Example 3:

[0041] See Figure 7 and Figure 8 Based on Embodiment 2, the power-on and protection unit of the LED display distribution box in Embodiment 3 also includes a leakage current protection switch 53. The leakage current protection switch 53 is installed on the mounting plate 9. The signal input terminal of the leakage current protection switch 53 is generally connected to the fault detection terminal of the intelligent remote power-on control module after passing through an optocoupler.

[0042] The distribution box also includes a maintenance socket 6, which is mounted on mounting plate 9. Maintenance socket 6 is connected to the output of the microprocessor via a relay, which controls the power supply to maintenance socket 6. The high-voltage input terminal (L / N) of maintenance socket 6 is connected to the main contacts of the relay. The relay coil is connected to the output (24V DC) of the drive circuit of the intelligent remote power-on control module. This drive circuit is controlled by a microprocessor to achieve safe isolation between high and low voltage currents, preventing high voltage from entering the intelligent remote power-on control module. The relay typically uses a 40A contact capacity and is mounted on an aluminum heat sink, controlling a load ≤80% of the rated current.

[0043] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0044] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0045] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0046] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0047] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An intelligent remote power-on control module, installed in the power distribution box of an LED display screen, characterized in that: It includes a rear shell (11), a main control unit and a front shell (13). The main control unit includes a first circuit board (120), a second circuit board (123), a programmable logic controller (1) mounted on the first circuit board (120), a microprocessor, a memory and a communication module. The rear shell (11) is fastened together with the front shell (13) and forms the accommodating space of the main control unit. The second circuit board (123) is placed on the front side of the first circuit board (120) and the two are electrically connected. The control button (1232) on the front of the second circuit board (123) extends out from the front shell (13). The left and right side panels of the rear shell (11) are convex in shape, and the left and right inner walls are provided with guide strips (112). The first circuit board (120) has slots (121) on opposite sides that are adapted to the guide strips (112). The first circuit board (120) moves along the guide strips (112) so that its upper and lower edges abut against the front end of the upper and lower side panels of the rear shell (11). The signal terminals (122) of the first circuit board (120) are exposed outside the rear shell (11).

2. The intelligent remote power-on control module as described in claim 1, characterized in that: There is a space reserved between the first circuit board (120) and the rear side wall of the rear shell (11), and the upper and lower side walls of the rear shell (11) are provided with heat dissipation holes (111).

3. The intelligent remote power-on control module as described in claim 1, characterized in that: The front shell (13) is in the shape of an I-beam, with flip covers (14) rotatably connected to its upper and lower sides.

4. The intelligent remote power-on control module as described in claim 1, characterized in that: The front shell (13) is provided with a fastening groove (131), and the rear shell (11) is provided with a corresponding buckle (113). The front shell (13) and the rear shell (11) are fastened together.

5. An LED display screen power distribution box, used in conjunction with a control system to achieve remote power-on, characterized in that: Includes the intelligent remote power-on control module as described in any one of claims 1 to 4, waterproof door panel (3), main shell of the enclosure (4), control execution unit, power-on and protection unit and sensing system; The waterproof door panel (3) is hinged to the main shell (4) of the box, and the intelligent remote power-on control module, control execution unit, power-on and protection unit and sensing system are installed in the main shell (4).

6. The LED display screen power distribution box as described in claim 5, characterized in that: The power-on and protection unit includes a mounting plate (9), a main circuit air switch (51) and branch circuit air switches (52) fixed on the mounting plate (9). The main circuit air switch (51) is electrically connected to the intelligent remote power-on control module. The main circuit air switch (51) is equipped with an electric operating mechanism. The branch circuit air switches (52) are connected in series with the main circuit air switch (51). The control execution unit includes, but is not limited to, relays and contactors. The input terminal of the relay is electrically connected to the output terminal of the microprocessor to receive instructions for step-by-step power-on. The output terminal of the relay drives the contactor coil, and the main contacts of the contactor control the power supply of the branch circuit breaker (52) and the main circuit breaker (51) to realize remote step-by-step closing.

7. The LED display screen power distribution box as described in claim 6, characterized in that: The power-on and protection unit also includes a leakage current protection switch (53), which is installed on the mounting plate (9), and the signal input terminal of the leakage current protection switch (53) is connected to the fault detection terminal of the intelligent remote power-on control module.

8. The LED display screen power distribution box as described in claim 7, characterized in that: The distribution box is also equipped with a maintenance socket (6), which is installed on the mounting plate (9). The maintenance socket (6) is connected to the output terminal of the microprocessor via a relay, and the relay is used to control the power supply of the maintenance socket (6).

9. The LED display screen power distribution box as described in claim 8, characterized in that: The waterproof door panel (3) is equipped with a button panel (2), which has a panel indicator light (21) and a panel button (22). The button panel (2) is electrically connected to the intelligent remote power-on control module.

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