A large LED display for high-altitude fall protection

Abstract

This invention relates to the field of LED display technology, and in particular to a large LED display with fall protection mechanism. The device includes a first fixing plate fixed to a wall, and a second fixing plate covering and fixedly connected to the first fixing plate. It also includes a plurality of display units arranged in an array on the second fixing plate; a plurality of fall protection components adapted to the display units and installed between the display units and the wall for edge protection in the event of a fall; and a fall recovery component for recovering and protecting the fallen display units. This device, through the fall protection and fall recovery components, on the one hand, prevents safety hazards caused by the fall of the display units through recovery, and on the other hand, prevents damage to the display units from fall damage, facilitating repair and reuse of the display units.

Description

Technical Field

[0001] This invention relates to the field of LED displays, and more particularly to a large LED display designed for high-altitude fall protection. Background Technology

[0002] An LED display is a flat panel display device that displays images, videos, or text by controlling an array of light-emitting diodes. Each pixel is composed of red, green, and blue LED beads. Full-color display is achieved by adjusting the brightness of each bead. It is commonly used in outdoor advertising screens, stadiums, stage backdrops, and high-end televisions. In a narrow sense, it is also often used to refer to LCD screens that use LED backlighting technology, but strictly defined, it specifically refers to pure LED pixel self-emissive display technology.

[0003] In the existing technology, large outdoor LED displays may fall due to aging or extreme weather during long-term use. The individual displays of large LED displays are also quite heavy, which poses a safety hazard when they fall. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a large LED display for high-altitude fall protection.

[0005] This invention provides a large LED display for high-altitude fall protection, including a first fixing plate fixed to a wall, and further comprising:

[0006] The second fixing plate is fixed to the wall and covers the first fixing plate, and is fixedly connected to the first fixing plate;

[0007] Several individual display screens are mounted in an array on the second fixing plate;

[0008] Several fall protection components are adapted to the display unit and installed between the display unit and the wall to provide edge protection when the display unit falls.

[0009] A fall recovery assembly is installed on the wall and located below the first fixing plate, for recovering and protecting the fallen display unit.

[0010] The first and second fixing plates together securely install each display unit. In the event of an accidental fall, the falling display unit will pull the fall protection component, triggering it to wrap around and protect the display unit. This helps prevent the display unit from impacting and damaging other display units during the fall, and also helps mitigate the impact damage. When the display unit is protected by the fall protection component, it falls to the height of the fall recovery component, which then triggers the fall recovery component to retrieve the fallen display unit. This retrieval prevents safety hazards caused by the fall and avoids damage to the display unit, facilitating repair and reuse.

[0011] Preferably, the fall protection assembly includes:

[0012] A storage cavity is formed in the wall, and the first fixing plate covers the storage cavity;

[0013] The protective cable is installed at one end inside the storage cavity;

[0014] The liquefied gas chamber is arranged in a U-shape and is fixedly installed inside the gas cavity opened inside the display unit;

[0015] Two airbags are respectively installed inside the storage slots opened on the edge of the display unit, and the ends of the airbags are connected to the liquefied gas chamber;

[0016] A pull trigger component, installed inside the protective cable and the liquefied gas chamber, triggers the liquefied gas chamber to connect with the airbag to release gas when the protective cable is subjected to an impact pull;

[0017] When a display unit falls, pulling the protective cable will cause the impact to pull the trigger component. This trigger component connects the liquefied gas chamber and the airbag, causing the liquefied gas inside the chamber to vaporize as the pressure decreases and enter the airbag. The airbag then expands as it fills with gas and extends out from the storage tank, forming an airbag protection at the edge of the display unit, thus protecting the falling display unit.

[0018] Preferably, the pull trigger component includes:

[0019] A separator membrane, arranged in a U-shape, is fixed inside the liquefied gas chamber, dividing the interior of the liquefied gas chamber into a storage space and a connecting space, the connecting space connecting to the airbag;

[0020] The protective cable has multiple pull ends, and the other end of the cable is arranged in a divergent manner to form multiple branches. The pull ends are fixed to the branch ends of the protective cable and to the side wall of the separator membrane.

[0021] Multiple wrapping films are respectively wrapped around the outside of each of the pull ends and fixed inside the liquefied gas chamber above the separator film to form an independent wrapping of the pull end inside the liquefied gas chamber.

[0022] The separator membrane divides the interior of the liquefied gas chamber into a storage space and a connecting space. The storage space stores the liquefied gas, while the connecting space connects to the airbag. When the protective cable impacts and pulls the separator membrane, it pulls along the direction of the separator membrane, triggering the separator membrane to open and create a gap, connecting the storage space and the connecting space. This causes a pressure change inside the storage space, which in turn causes the liquefied gas inside to re-vaporize and enter the interior of the airbag for filling.

[0023] Specifically, the separator membrane is provided with multiple sealing plates that are connected in parallel with the separator membrane. Under normal conditions, the sealing plates are fixedly connected to the separator membrane to form a seal. When a vertical force is applied to the separator membrane and the sealing plates under air pressure, it will not push the sealing plates to open the separator membrane. However, when a force parallel to the separator membrane is applied to the sealing plates, it will pull the sealing plates and the separator membrane to move relative to each other, thereby pulling the separator membrane to create a gap and open the separator membrane.

[0024] Preferably, the fall protection assembly further includes:

[0025] The length of the protective cable is set according to the installation position of the display unit, so that the display unit falls to the height of the fall recovery assembly after falling.

[0026] Preferably, the fall protection assembly further includes:

[0027] The mounting bracket is fixed inside the storage cavity;

[0028] A fixed platform is fixed to the mounting bracket;

[0029] A spring is mounted on the fixed platform, with its outer end connected to the fixed platform;

[0030] A first rotating platform is rotatably mounted on the fixed platform, and the inner end of the spring is connected to the first rotating platform;

[0031] The take-up end is located at the end of the protective cable facing the inside of the storage cavity and is wound around the outside of the first rotating platform;

[0032] An annular plate is sleeved on the outside of the winding end, and is connected and fixed to the mounting frame through the outside. A circular hole is provided on the side wall of the annular plate for the protective cable to pass through.

[0033] Multiple pulleys are installed inside the mounting frame to guide the protective cable to pass through the center of the mounting frame after it turns, and the protective cable passes through the first fixing plate and the second fixing plate.

[0034] Preferably, the fall recovery assembly includes:

[0035] The recycling bin is installed inside a mounting slot opened in the wall;

[0036] Multiple cylinders are fixed inside the recycling bin;

[0037] An electromagnet plate is fixed to the end of the telescopic rod of the cylinder. The electromagnet plate seals the opening of the recycling bin, thus making it flush with the wall surface.

[0038] A magnetic metal plate is fixed to the side wall of each of the individual display screens.

[0039] Preferably, the fall recovery assembly further includes:

[0040] Multiple second rotating platforms, with two second rotating platforms forming a group, are rotatably mounted on the top of the inner wall of the recycling bin and arranged in a linear array;

[0041] Multiple blades are fixed to the side wall of each of the second rotating platforms, with the blade edges facing outwards from the recycling bin;

[0042] Multiple blade handles are fixed to the side wall of each of the second rotating platforms and face the inside of the recycling bin. A spring is installed between two blade handles on the same group of second rotating platforms.

[0043] Multiple ropes are respectively fixed to the handle of the knife and the electromagnet plate.

[0044] Preferably, the fall recovery assembly further includes:

[0045] The sidewalls of the electromagnet plate are all provided with protrusions;

[0046] All of the aforementioned display screen units have grooves formed on their magnetic metal plates.

[0047] Preferably, the fall recovery assembly further includes:

[0048] The guide box is fixed inside the recycling bin;

[0049] An inclined surface is formed at the top of the guide box, and the inclined surface faces the inside of the recycling box at an angle to guide the falling display unit.

[0050] Preferably, the fall recovery assembly further includes:

[0051] An air pump is fixed inside the guide box;

[0052] Multiple air vents are provided on the side wall of the guide box and face the interior of the recycling box.

[0053] Compared with the prior art, the present invention has the following beneficial effects:

[0054] On the one hand, recycling can prevent safety hazards caused by individual display units falling. On the other hand, recycling individual display units can prevent them from falling and being damaged, so that they can be repaired and reused. Attached Figure Description

[0055] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0056] Figure 2 This is a schematic diagram of the overall cross-section of the present invention.

[0057] Figure 3 For the present invention Figure 2 A magnified structural diagram of point A in the middle.

[0058] Figure 4 For the present invention Figure 3 A magnified structural diagram at point B in the middle.

[0059] Figure 5 For the present invention Figure 3 A magnified structural diagram at point C.

[0060] Figure 6 This is a schematic diagram of the recycling bin structure of the present invention.

[0061] Figure 7 For the present invention Figure 6 The structural diagram at point D in the middle.

[0062] In the diagram: 1. Wall; 101. First fixing plate; 102. Second fixing plate; 103. Display screen unit; 2. Protective cable; 201. Storage cavity; 202. Liquefied gas chamber; 203. Airbag; 204. Storage tank; 3. Separating membrane; 301. Wrapping membrane; 302. Pulling end; 4. Mounting frame; 401. Fixing platform; 402. Spring; 403. First rotating platform; 404. Winding end; 405. Annular plate; 406. Pulley; 5. Recovery box; 501. Mounting slot; 502. Cylinder; 503. Electromagnetic plate; 6. Second rotating platform; 601. Blade; 602. Blade handle; 603. Rope; 7. Guide box; 8. Air pump. Detailed Implementation

[0063] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0064] like Figures 1 to 7 The large LED display for high-altitude fall protection shown includes a first fixing plate 101, which is fixed to the wall 1, and also includes:

[0065] The second fixing plate 102 is fixed to the wall 1 and covers the first fixing plate 101, and is fixedly connected to the first fixing plate 101.

[0066] Several display screen units 103 are mounted in an array on the second fixing plate 102;

[0067] Several fall protection components are adapted to the display unit 103 and installed between the display unit 103 and the wall 1 to provide edge protection when the display unit 103 falls.

[0068] The fall recovery assembly is installed on the wall 1 and located below the first fixing plate 101, and is used to recover and protect the fallen display screen unit 103.

[0069] In the existing technology, large outdoor LED displays may fall due to aging or extreme weather during long-term use. The display screens of large LED displays are also quite heavy, which poses a safety hazard when the LED displays fall.

[0070] This embodiment of the invention can solve the above problems. The specific implementation is as follows: the first fixing plate 101 and the second fixing plate 102 can jointly fix and install each display unit 103. When the display unit 103 falls accidentally, the falling display unit 103 will pull the fall protection component, which is triggered by the pull of the falling display unit 103, thereby wrapping and protecting the display unit 103. This helps to prevent the display unit 103 from causing impact damage to other display units 103 when it falls, and also helps to reduce the impact damage when the display unit 103 falls. When the display unit 103 is protected by the fall protection component, the fall protection component falls to the height of the fall recovery component, thereby triggering the fall recovery component after the display unit 103 falls, which can recover the falling display unit 103. On the one hand, the recovery can avoid the safety hazards caused by the fall of the display unit 103. On the other hand, the recovery of the display unit 103 can prevent the fall damage of the display unit 103, so that the display unit 103 can be repaired and reused.

[0071] As an optional embodiment, the fall protection component includes:

[0072] Storage cavity 201 is formed on wall 1, and first fixing plate 101 covers storage cavity 201;

[0073] Protective cable 2, one end of which is installed inside the storage cavity 201;

[0074] The liquefied gas chamber 202 is arranged in a U-shape and is fixedly installed inside the gas cavity opened inside the display unit 103;

[0075] Two airbags 203 are respectively installed inside the storage slots 204 opened on the edge of the display unit 103, and the ends of the airbags 203 are connected to the liquefied gas chamber 202.

[0076] The pull trigger component is installed inside the protective cable 2 and the liquefied gas chamber 202. When the protective cable 2 is pulled by an impact, the liquefied gas chamber 202 is triggered to connect with the airbag 203 to release gas.

[0077] When the display unit 103 falls, pulling the protective cable 2 will cause the protective cable 2 to be pulled by the impact of the fall, which will trigger the pull trigger component. This triggers the pull trigger component to connect the liquefied gas chamber 202 and the airbag 203. The liquefied gas inside the liquefied gas chamber 202 will vaporize after the pressure decreases and enter the airbag 203. The airbag 203 will be filled with gas and expand, thus extending out from the inside of the storage tank 204 and forming an airbag protection at the edge of the display unit 103, thereby protecting the falling display unit 103.

[0078] As an optional embodiment, the pull trigger component includes:

[0079] The separator 3 is arranged in a U-shape and fixed inside the liquefied gas chamber 202, dividing the interior of the liquefied gas chamber 202 into a storage space and a connecting space, with the connecting space connecting to the airbag 203;

[0080] Multiple pull ends 302, the other end of the protective cable 2 is arranged in a divergent manner to present multiple branches, the pull ends 302 are fixed to the branch ends of the protective cable 2, and fixed to the side wall of the separator membrane 3;

[0081] Multiple wrapping films 301 are respectively wrapped around the outside of each pull end 302 and fixed inside the first-level liquefied gas chamber 202 above the separator 3, so as to form an independent wrapping of the pull end 302 inside the liquefied gas chamber 202.

[0082] The separator 3 divides the interior of the liquefied gas chamber 202 into a storage space and a connecting space. The liquefied gas is stored inside the storage space, and the connecting space is connected to the airbag 203. When the protective cable 2 impacts and pulls the separator 3, it pulls the separator 3 along its direction to trigger the separator 3 to open and create a gap, so that the storage space and the connecting space are connected. This causes a pressure change inside the storage space, so that the liquefied gas inside will re-vaporize after the pressure change and enter the interior of the airbag 203 for filling.

[0083] Specifically, the separator membrane 3 is provided with multiple sealing plates that are connected in parallel with the separator membrane 3. Under normal conditions, the sealing plates are fixedly connected to the separator membrane 3 to form a seal. When a vertical force is applied to the separator membrane 3 and the sealing plates under air pressure, it will not push the sealing plates to open the separator membrane 3. However, when a force parallel to the separator membrane 3 is applied to the sealing plates, it will pull the sealing plates and the separator membrane 3 to move relative to each other, thereby pulling the separator membrane 3 to create a gap and open the separator membrane 3.

[0084] As an optional embodiment, the fall protection component further includes:

[0085] The length of the protective cable 2 is set according to the installation position of the display unit 103, so that the display unit 103 falls to the height of the fall recovery component after falling.

[0086] By setting the length of the protective cable 2, the display unit 103 will eventually fall to the height of the fall recovery component after the fall, which makes it easier to recover the display unit 103 in different positions.

[0087] As an optional embodiment, the fall protection component further includes:

[0088] Mounting bracket 4 is fixed inside the storage cavity 201;

[0089] The mounting base 401 is fixed on the mounting bracket 4;

[0090] The spring 402 is mounted on the fixed platform 401, and its outer end is connected to the fixed platform 401.

[0091] The first rotating platform 403 is rotatably mounted on the fixed platform 401, and the inner end of the spring 402 is connected to the first rotating platform 403.

[0092] The take-up end 404 is located at the end of the protective cable 2 facing the inside of the storage cavity 201 and is wound around the outside of the first rotating platform 403;

[0093] The annular plate 405 is sleeved on the outside of the winding end 404 and is connected and fixed to the mounting frame 4 through the outside. The side wall of the annular plate 405 is provided with a round hole for the protective cable 2 to pass through.

[0094] Multiple pulleys 406 are installed inside the mounting frame 4 to guide the protective cable 2 to pass through the center of the mounting frame 4 after turning. The protective cable 2 passes through the first fixing plate 101 and the second fixing plate 102.

[0095] When the display unit 103 falls, the protective cable 2 is pulled, which in turn pulls the first rotating platform 403 to rotate, causing the spring 402 to rotate. At this time, the protective cable 2 extends, causing the display unit 103 to hang at the height of the fall recovery assembly, thereby pulling and protecting the display unit 103 and limiting the drop height of the display unit 103. When the protective cable 2 is cut to recover the display unit 103, the spring 402 drives the protective cable 2 to recover, which helps to prevent the display unit 103 from being damaged by the swinging of the protective cable 2.

[0096] As an optional embodiment, the fall recovery assembly includes:

[0097] The recycling bin 5 is installed inside the mounting slot 501 opened on the wall 1;

[0098] Multiple cylinders 502 are fixed inside the recycling bin 5;

[0099] Electromagnetic plate 503 is fixed to the end of the telescopic rod of cylinder 502. Electromagnetic plate 503 seals the opening of recycling box 5, so that it is flush with the surface of wall 1.

[0100] Magnetic metal plates are fixed to the side walls of each display unit 103;

[0101] After the cylinder 502 is started, it drives the electromagnet plate 503 to move. After the recycling box 5 is started, it generates magnetism. The electromagnet plate 503 moves to the opening of the recycling box 5 and can attract the magnetic metal plate on the hanging display unit 103, thereby capturing the hanging display unit 103. Then the cylinder 502 is started to drive the electromagnet plate 503 to move into the inside of the recycling box 5. After moving into the inside of the recycling box 5, the electromagnet plate 503 is de-energized, causing the display unit 103 to fall into the inside of the recycling box 5 for recycling.

[0102] As an optional embodiment, the fall recovery assembly further includes:

[0103] Multiple second rotating platforms 6, with two second rotating platforms 6 forming a group, are rotatably installed on the top of the inner wall of the recycling bin 5 and arranged in a linear array;

[0104] Multiple blades 601 are fixed to the side wall of each of the second rotating platforms 6, with the blade edges facing outwards from the recycling box 5;

[0105] Multiple knife handles 602 are fixed to the side wall of each of the second rotating platforms 6, facing the inside of the recycling box 5. A spring is installed between two knife handles 602 on the same group of second rotating platforms 6.

[0106] Multiple ropes 603 are respectively fixed to the handle 602 and the electromagnet plate 503;

[0107] When the cylinder 502 moves the electromagnet plate 503 into the recycling bin 5, it pulls the rope 603, causing the rope 603 to pull the handle 602. The handle 602 rotates after being pulled, and when the handle 602 rotates around the second rotating platform 6, it drives the blade 601 to rotate. The rotation between the two blades 601 in the same group generates a shearing force to cut the protective cable 2, thereby separating the display unit 103 for recycling. When the electromagnet plate 503 moves back and forth several times, it can drive the blade 601 to cut back and forth to ensure the cutting of the protective cable 2.

[0108] As an optional embodiment, the fall recovery assembly further includes:

[0109] The sidewalls of the electromagnet plate 503 are all provided with protrusions;

[0110] Grooves are provided on the magnetic metal plates of all display screen units 103;

[0111] The protrusions and grooves enable a locking action during magnetic adsorption, thereby improving the stability of the adsorption and increasing friction in windy environments to prevent the object from falling off again.

[0112] As an optional embodiment, the fall recovery assembly further includes:

[0113] Guide box 7 is fixed inside recycling box 5;

[0114] An inclined surface is provided at the top of the guide box 7, and the inclined surface faces the inside of the recycling box 5 at an angle to guide the falling display unit 103.

[0115] The inclined surface at the top of the guide box 7 allows the display unit 103 to fall into the recycling box 5 under the guidance of the inclined surface when it detaches from the electromagnet plate 503. After falling, it tilts and then falls horizontally, which is beneficial for the display unit 103 to be stacked horizontally inside the recycling box 5 for recycling, thereby improving the utilization of recycling space.

[0116] As an optional embodiment, the fall recovery assembly further includes:

[0117] Air pump 8 is fixed inside the guide box 7;

[0118] Multiple air vents are provided on the side wall of the guide box 7 and face the interior of the recycling box 5;

[0119] After the air pump 8 is started, it drives the airflow. The airflow passes through the air hole and impacts the display unit 103, thereby promoting the horizontal stacking of the display unit 103.

[0120] The working principle of this invention is as follows: The first fixing plate 101 and the second fixing plate 102 together can fix and install each display unit 103. When the display unit 103 accidentally falls, the falling display unit 103 will pull the fall protection component, which will be triggered by the pull of the falling display unit 103 to wrap and protect the display unit 103. This helps to prevent the display unit 103 from being damaged by impact when it falls, and also helps to reduce the impact damage of the display unit 103 when it falls. When the display unit 103 is protected by the fall protection component, the fall protection component falls to the height of the fall recovery component, which triggers the fall recovery component after the display unit 103 falls, and can recover the falling display unit 103. On the one hand, the recovery can avoid the safety hazards caused by the fall of the display unit 103. On the other hand, the recovery of the display unit 103 can prevent the fall damage of the display unit 103, so that the display unit 103 can be repaired and reused.

[0121] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A large LED display for high-altitude fall protection, comprising a first fixing plate (101), the first fixing plate (101) being fixed to a wall (1), characterized in that, Also includes: The second fixing plate (102) is fixed to the wall (1) and covers the first fixing plate (101), and is fixedly connected to the first fixing plate (101); Several display screen units (103) are mounted in an array on the second fixing plate (102); Several fall protection components are adapted to the display unit (103) and installed between the display unit (103) and the wall (1) for edge protection when the display unit (103) falls; The fall recovery assembly is installed on the wall (1) and located below the first fixing plate (101) for recovering and protecting the fallen display unit (103).

2. A large LED display for high-altitude fall protection according to claim 1, characterized in that, The fall protection component includes: A storage cavity (201) is provided on the wall (1), and the first fixing plate (101) covers the storage cavity (201). A protective cable (2) is installed at one end inside the storage cavity (201); The liquefied gas chamber (202) is arranged in a U-shape and is fixedly installed inside the gas cavity opened inside the display unit (103); Two airbags (203) are respectively installed inside the storage slots (204) opened on the edge of the display unit (103), and the ends of the airbags (203) are connected to the liquefied gas chamber (202). A pull trigger component is installed inside the protective cable (2) and the liquefied gas chamber (202). When the protective cable (2) is pulled by an impact, the liquefied gas chamber (202) is triggered to connect with the airbag (203) to release gas.

3. A large LED display for high-altitude fall protection according to claim 2, characterized in that, The pull trigger component includes: The separator (3) is arranged in a U-shape and fixed inside the liquefied gas chamber (202), dividing the interior of the liquefied gas chamber (202) into a storage space and a connecting space, the connecting space connecting to the air bag (203). Multiple pull ends (302), the other end of the protective cable (2) is arranged in a divergent manner to present multiple branches, the pull end (302) is fixed to the branch end of the protective cable (2) and fixed to the side wall of the separator membrane (3); Multiple wrapping films (301) are respectively wrapped around the outside of each of the pull ends (302) and fixed inside the liquefied gas chamber (202) above the separator (3) to form an independent wrapping of the pull end (302) inside the liquefied gas chamber (202).

4. A large LED display for high-altitude fall protection according to claim 2, characterized in that, The fall protection assembly also includes: The length of the protective cable (2) is set according to the installation position of the display unit (103), so that the display unit (103) falls to the height of the fall recovery component after falling.

5. A large LED display for high-altitude fall protection according to claim 2, characterized in that, The fall protection assembly also includes: The mounting bracket (4) is fixed inside the storage cavity (201); A fixed platform (401) is fixed on the mounting bracket (4); A spring (402) is mounted on the fixed platform (401), and its outer end is connected to the fixed platform (401). The first rotating platform (403) is rotatably mounted on the fixed platform (401), and the inner end of the spring (402) is connected to the first rotating platform (403). The take-up end (404) is located at one end of the protective cable (2) facing the inside of the storage cavity (201) and is wound around the outside of the first rotating platform (403); An annular plate (405) is sleeved on the outside of the winding end (404), and is connected and fixed to the mounting frame (4) through the outside. A circular hole is provided on the side wall of the annular plate (405) for the protective cable (2) to pass through. Multiple pulleys (406) are installed inside the mounting frame (4) to guide the protective cable (2) to pass through the center of the mounting frame (4) after turning. The protective cable (2) passes through the first fixing plate (101) and the second fixing plate (102).

6. A large LED display for high-altitude fall protection according to claim 1, characterized in that, The fall recovery assembly includes: The recycling bin (5) is installed inside the mounting slot (501) opened on the wall (1); Multiple cylinders (502) are fixed inside the recycling bin (5); An electromagnet plate (503) is fixed to the end of the telescopic rod of the cylinder (502). The electromagnet plate (503) seals the opening of the recycling box (5) so that it is flush with the surface of the wall (1). A magnetic metal plate is fixed to the side wall of each of the display units (103).

7. A large LED display for high-altitude fall protection according to claim 6, characterized in that, The fall recovery assembly also includes: Multiple second rotating platforms (6), two second rotating platforms (6) are grouped together, and are rotatably installed on the top of the inner wall of the recycling bin (5) and arranged in a linear array; Multiple blades (601) are fixed to the side wall of each of the second rotating platforms (6), with the blade edges facing the outside of the recycling bin (5); Multiple knife handles (602) are fixed to the side walls of each of the second rotating platforms (6) and face the inside of the recycling box (5). A spring is installed between two knife handles (602) on the same group of second rotating platforms (6). Multiple ropes (603) are respectively fixed to the handle (602) and the electromagnet plate (503).

8. A large LED display for high-altitude fall protection according to claim 6, characterized in that, The fall recovery assembly also includes: The sidewalls of the electromagnet plate (503) are all provided with protrusions; All of the display unit (103) have grooves on their magnetic metal plates.

9. A large LED display for high-altitude fall protection according to claim 7, characterized in that, The fall recovery assembly also includes: The guide box (7) is fixed inside the recycling box (5); An inclined surface is provided at the top of the guide box (7) and faces the inside of the recycling box (5) at an angle to guide the falling display unit (103).

10. A large LED display for high-altitude fall protection according to claim 9, characterized in that, The fall recovery assembly also includes: An air pump (8) is fixed inside the guide box (7); Multiple air holes are provided on the side wall of the guide box (7) and face the interior of the recycling box (5).

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