LED display screen

Abstract

The invention belongs to the technical field of LED display screens, and particularly relates to an LED display screen which comprises a display screen body and a mounting plate, a damping cavity used for storing damping liquid is formed in the mounting plate, a conduction rod is fixedly mounted at the end, close to the mounting plate, of the display screen body, one end of the conduction rod extends into the damping cavity, and a damping plate is fixedly mounted at the end, close to the damping cavity, of the display screen body. The outer wall of the damping plate is attached to the inner wall of the damping cavity, the damping plate is provided with a plurality of circulating holes for damping liquid to pass through, a reset spring is arranged between the mounting plate and the display screen, flow blocking rods are slidably mounted in the damping plate, the number of the flow blocking rods is consistent with that of the circulating holes, and a control ring is rotatably mounted in the damping plate. And an arc-shaped jacking block used for jacking the flow stopping rod is fixedly mounted on the outer wall of the control ring, and through cooperative use of the structures, the problem that the spring is prone to being damaged due to the fact that damping is achieved through the spring and the damping plate can be effectively solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of LED display screens, and specifically relates to an LED display screen. Background Art

[0002] An LED display screen is an electronic device that uses a large number of light-emitting diodes (LEDs) as pixel points, arranged in a matrix form and controlling their brightness to display information such as text, images, and videos. It has the characteristics of high brightness, high contrast, vivid colors, wide viewing angle, low energy consumption, long lifespan, etc., and is widely used in fields such as advertising media, stage performances, stadiums, traffic signs, information dissemination, and video wall splicing. It is an important part of modern display technology.

[0003] For example, in the publicly disclosed patent: CN115035813B, an LED display screen includes an LED display module, a first buffer mechanism, and a second buffer mechanism; the first buffer mechanism is connected to the rear end face of the LED display module through a connecting column; the first buffer mechanism includes a first limiting plate, a first limiting column, a rectangular connecting plate, and a first elastic member. One end of the first limiting column is arranged on the rectangular connecting plate, and the other end is connected to the first limiting plate. The first elastic member is sleeved on the first limiting column and is located between the first limiting plate and the rectangular connecting plate; the second buffer mechanism is connected to the rear end face of the first buffer mechanism. The LED display screen of the present invention can improve the impact resistance of the LED display screen.

[0004] The above patent uses a spring in cooperation with a buffer plate to achieve shock absorption for the display screen. When the spring cooperates with the damping plate for shock absorption, if the force is too large, the spring will bear stress and deformation beyond its design range, accelerating material fatigue and even exceeding its elastic limit, resulting in plastic deformation or fracture, thereby affecting the shock absorption effect.

[0005] Therefore, the present invention provides an LED display screen. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art and solve at least one of the technical problems proposed in the background art.

[0007] The technical solution adopted by the present invention to solve its technical problems is: an LED display screen of the present invention includes a display screen and a mounting plate;

[0008] A damping cavity for storing damping liquid is provided inside the mounting plate. One end of the display screen close to the mounting plate is fixedly installed with a conduction rod. One end of the conduction rod extends into the damping cavity and is fixedly installed with a damping plate. The outer wall of the damping plate is in contact with the inner wall of the damping cavity;

[0009] The damping plate is provided with a plurality of through holes for the damping liquid to pass through;

[0010] A reset spring is arranged between the mounting plate and the display screen;

[0011] A flow blocking rod is slidably mounted inside the damping plate. The number of flow blocking rods is the same as the number of flow through holes. A control ring is rotatably mounted inside the damping plate. An arc-shaped top block for pressing against the flow blocking rod is fixedly mounted on the outer wall of the control ring.

[0012] A transmission rod is elastically mounted inside the conduction rod. A second gear is fixedly mounted at one end of the transmission rod. A toothed ring is fixedly mounted on the inner wall of the control ring. The second gear meshes with the toothed ring.

[0013] A torsion spring is fixedly connected to the outer wall of the transmission rod. The other end of the torsion spring is fixedly connected to the inside of the conduction rod.

[0014] A first gear is fixedly mounted at the end of the transmission rod away from the second gear. A toothed plate is slidably mounted inside the conduction rod. The toothed plate meshes with the first gear. The number of toothed plates and transmission rods is the same as the number of flow through holes.

[0015] An air intake cavity is formed in the side wall of the display screen. An air collecting cavity is formed inside the display screen. An exhaust fan is arranged on the air collecting cavity. An air guiding groove is formed in the air collecting cavity. A conduction groove is formed inside the conduction rod. The air guiding groove is communicated with the conduction groove.

[0016] An exhaust groove is formed inside the mounting plate. A heat conducting tube is fixedly mounted inside the mounting plate. One end of the heat conducting tube extends into the conduction rod, and the other end penetrates through the damping cavity and extends into the exhaust groove. There are multiple heat conducting tubes, and the multiple heat conducting tubes are arranged in a circular pattern.

[0017] A thermal expansion ring is arranged inside the conduction rod. The thermal expansion ring is sleeved on the outer walls of the multiple heat conducting tubes. The inner wall of the thermal expansion ring fits with the outer walls of the multiple heat conducting tubes. The outer wall of the thermal expansion ring abuts against the bottom end of the toothed plate.

[0018] A reciprocating lead screw is rotatably mounted inside the heat conducting tube. A cleaning ring is slidably mounted on the outer wall of the reciprocating lead screw. The outer wall of the cleaning ring fits with the inner wall of the heat conducting tube.

[0019] A rotating shaft is rotatably mounted inside the conduction rod. A driving gear is fixedly mounted on the outer wall of the rotating shaft. A transmission gear is fixedly mounted on the outer wall of the reciprocating lead screw. The driving gear meshes with the transmission gear. The number of reciprocating lead screws is the same as the number of heat conducting tubes.

[0020] An impeller driven to rotate by wind force is fixedly mounted on the outer wall of the rotating shaft.

[0021] The beneficial effects of the present invention are as follows:

[0022] 1. An LED display screen according to the present invention drives a damping plate through a conduction rod to extrude damping liquid, so that the damping liquid passes through a circulation hole, effectively providing a shock-absorbing effect for the display screen. Then, a heat conduction tube absorbs heat energy and transfers it to a thermal expansion ring, causing the thermal expansion ring to expand and press against a toothed plate, so that a transmission rod drives a control ring to rotate, and an arc-shaped top block presses against a flow-blocking rod to make it enter the inside of the circulation hole, reducing the flow rate of the damping liquid. This can not only avoid the problem that the spring is easily damaged when using a spring and a shock-absorbing plate to achieve shock absorption, but also can adaptively adjust the flow rate of the damping liquid to cope with the problem that the viscosity of the damping liquid decreases due to high temperature, resulting in a reduction in the shock-absorbing effect.

[0023] 2. When the exhaust fan of an LED display screen according to the present invention starts, the gas outside the display screen is sucked into the inside of the air collection cavity through the air intake cavity. At this time, the gas entering the inside of the air collection cavity will enter the inside of the conduction groove through the air guide groove. By the impact of the gas on the impeller, the impeller can be driven to drive the rotating shaft to rotate, so that the driving gear and a plurality of transmission gears rotate, and the reciprocating lead screw drives the cleaning ring to clean the inside of each heat conduction tube at the same time, effectively ensuring the heat conduction efficiency of the heat conduction tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below with reference to the drawings.

[0025] Figure 1 is a perspective view of the present invention;

[0026] Figure 2 is a schematic structural view of the air intake cavity of the present invention;

[0027] Figure 3 is a schematic structural view of the air collection cavity of the present invention;

[0028] Figure 4 is in the present invention Figure 3 the enlarged view at A;

[0029] Figure 5 is a cross-sectional view of the conduction rod of the present invention;

[0030] Figure 6 is in the present invention Figure 5 the enlarged view at B;

[0031] Figure 7 is a cross-sectional view of the mounting plate of the present invention;

[0032] Figure 8 is in the present invention Figure 7 the enlarged view at C;

[0033] Figure 9 is a schematic structural view of the impeller of the present invention;

[0034] Figure 10 In the present invention Figure 9 Enlarged view of point D in .

[0035] In the figure: 1. display screen; 2. air inlet chamber; 3. mounting plate; 4. exhaust fan; 5. air collecting chamber; 6. air guide groove; 7. conduction rod; 8. damping plate; 9. conduction groove; 10. heat pipe; 11. thermal expansion ring; 12. cleaning ring; 13. reset spring; 14. damping chamber; 15. exhaust groove; 16. flow hole; 17. tooth plate; 18. transmission rod; 19. first gear; 20. second gear; 21. control ring; 22. arc-shaped top block; 23. flow control rod; 24. torsion spring; 25. rotating shaft; 26. impeller; 27. driving gear; 28. transmission gear; 29. reciprocating screw. DETAILED DESCRIPTION

[0036] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0037] Example 1: Figures 1 to 8 As shown, an LED display screen according to an embodiment of the present invention includes a display screen 1 and a mounting plate 3;

[0038] A damping chamber 14 for storing damping fluid is defined within the mounting plate 3. A conductive rod 7 is fixedly mounted on the end of the display screen 1 near the mounting plate 3. One end of the conductive rod 7 extends into the damping chamber 14 and is fixedly mounted with a damping plate 8. The outer wall of the damping plate 8 is in contact with the inner wall of the damping chamber 14.

[0039] The damping plate 8 is provided with a plurality of flow holes 16 for the damping fluid to pass through.

[0040] When the display screen 1 is outdoors and shakes under the influence of wind, the damping plate 8 is driven to slide inside the damping chamber 14 through the conductive rod 7. When the display screen 1 slides toward the mounting plate 3, the damping plate 8 squeezes the damping fluid in the damping chamber 14. The squeezed damping fluid can pass through the multiple flow holes 16. In this way, the potential energy of the conductive rod 7 driven by the display screen 1 can be absorbed, thereby effectively providing a shock-absorbing effect for the display screen 1.

[0041] A return spring 13 is provided between the mounting plate 3 and the display screen 1. When the display screen 1 drives the conductive rod 7 to slide toward the mounting plate 3, the display screen 1 will squeeze the return spring 13, causing it to deform and store elastic potential energy. When the display screen 1 stops shaking, the return spring 13 will release the elastic potential energy and press the display screen 1 to reset. Through the cooperation of the damping fluid and the conductive rod 7, not only can the shock absorption efficiency be effectively improved, but also the problem of easy damage to the spring when shock absorption is achieved through the spring and the shock absorption plate can be avoided.

[0042] A flow resistance rod 23 is slidably installed inside the damping plate 8. The number of flow resistance rods 23 is the same as the number of flow-through holes 16. A control ring 21 is rotatably installed inside the damping plate 8. An arc-shaped top block 22 for pressing against the flow resistance rod 23 is fixedly installed on the outer wall of the control ring 21.

[0043] When controlling the flow resistance rod 23 to move towards the flow-through hole 16, at this time the flow resistance rod 23 will partially block the aperture inside the flow-through hole 16, thereby reducing the flow rate of the damping liquid, and further slowing down the moving speed of the damping plate 8 in the damping cavity 14. Because when the damping liquid is at a high temperature, its viscosity will decrease, which will also lead to a poor damping effect. Through the above structural arrangement, when the damping liquid is at a relatively high temperature, the flow rate of the damping liquid can be reduced, thereby improving the damping effect.

[0044] By rotating the control ring 21, the arc-shaped top block 22 can be driven to rotate. When the arc-shaped top block 22 rotates to the bottom end of the flow resistance rod 23, at this time, as the arc-shaped top block 22 continues to rotate, the flow resistance rod 23 can be made to slide along the outer wall of the arc-shaped top block 22, so as to slide towards the flow-through hole 16 and block the flow rate of the damping liquid.

[0045] The number of arc-shaped top blocks 22 is the same as the number of flow resistance rods 23.

[0046] A transmission rod 18 is elastically installed inside the conduction rod 7. One end of the transmission rod 18 is fixedly installed with a second gear 20. A toothed ring is fixedly installed on the inner wall of the control ring 21. The second gear 20 meshes with the toothed ring.

[0047] When the transmission rod 18 rotates, it will drive the second gear 20 to rotate synchronously. Since a toothed ring is provided on the inner wall of the control ring 21, when the transmission rod 18 drives the second gear 20 to rotate, the control ring 21 will drive the arc-shaped top block 22 to rotate and press against the flow resistance rod 23. When the transmission rod 18 drives the second gear 20 to rotate in the reverse direction, it will drive the arc-shaped top block 22 to gradually move away from the flow resistance rod 23. At this time, the flow resistance rod 23 not pressed by the arc-shaped top block 22 will slide out from the inside of the flow-through hole 16 under the pressure of the damping liquid, releasing the blockage of the flow rate of the damping liquid.

[0048] The outer wall of the transmission rod 18 is fixedly connected with a torsion spring 24. The other end of the torsion spring 24 is fixedly connected to the inside of the conduction rod 7.

[0049] When the transmission rod 18 drives the second gear 20 to make the control ring 21 drive the arc-shaped top block 22 to press against the flow resistance rod 23 and make it enter the inside of the flow-through hole 16, the torsion spring 24 will also deform and store elastic potential energy. By releasing the elastic potential energy of the torsion spring 24, the transmission rod 18 will drive the second gear 20 and the control ring 21 to reverse. At this time, the arc-shaped top block 22 will also release the pressure on the flow resistance rod 23.

[0050] One end of the transmission rod 18 far from the second gear 20 is fixedly installed with a first gear 19. A toothed plate 17 is slidably installed inside the conduction rod 7. The toothed plate 17 meshes with the first gear 19. The number of the toothed plates 17 and the transmission rods 18 is the same as the number of the flow holes 16.

[0051] When the toothed plate 17 slides upward, it will drive the first gear 19 to rotate, and at the same time make the transmission rod 18 drive the second gear 20 to rotate. At this time, the control ring 21 will drive the arc-shaped top block 22 to press against the flow-blocking rod 23, so that it enters the inside of the flow hole 16. When the toothed plate 17 slides downward, it will make the transmission rod 18 drive the second gear 20 and the control ring 21 to reverse. At this time, the arc-shaped top block 22 will also release the pressing on the flow-blocking rod 23.

[0052] An air intake cavity 2 is formed on the side wall of the display screen 1. An air collection cavity 5 is formed inside the display screen 1. An exhaust fan 4 is arranged on the air collection cavity 5. A wind guide groove 6 is formed on the air collection cavity 5. A conduction groove 9 is formed inside the conduction rod 7. The wind guide groove 6 is communicated with the conduction groove 9.

[0053] An exhaust groove 15 is formed inside the mounting plate 3. A heat conduction tube 10 is fixedly installed inside the mounting plate 3. One end of the heat conduction tube 10 extends into the inside of the conduction rod 7, and the other end penetrates through the damping cavity 14 and extends into the inside of the exhaust groove 15. There are multiple heat conduction tubes 10, and the multiple heat conduction tubes 10 are arranged in a circular pattern.

[0054] By starting the exhaust fan 4 (with a built-in motor), the gas outside the display screen 1 can be inhaled into the inside of the air collection cavity 5 through the air intake cavity 2. At this time, the gas entering the inside of the air collection cavity 5 will enter the inside of the conduction groove 9 through the wind guide groove 6. At the same time, the gas is conveyed into the exhaust groove 15 through the multiple heat conduction tubes 10 arranged, and the active heat dissipation inside the display screen 1 can be completed.

[0055] At the same time, when the high temperature generated inside the display screen 1 passes through the inside of the heat conduction tube 10 (set as a copper tube), the heat conduction tube 10 will also absorb the heat energy.

[0056] A thermal expansion ring 11 is arranged inside the conduction rod 7. The thermal expansion ring 11 is sleeved on the outer walls of the multiple heat conduction tubes 10. The inner wall of the thermal expansion ring 11 fits with the outer walls of the multiple heat conduction tubes 10. The outer wall of the thermal expansion ring 11 abuts against the bottom end of the toothed plate 17.

[0057] After the heat conduction tube 10 absorbs heat energy, it will directly transfer the heat to the thermal expansion ring 11, causing the thermal expansion ring 11 to expand. After the thermal expansion ring 11 expands, it will press against the toothed plate 17, causing it to slide upward, thereby driving the first gear 19 to rotate. At the same time, the transmission rod 18 drives the second gear 20 to rotate. At this time, the control ring 21 drives the arc-shaped top block 22 to press against the flow blocking rod 23, causing it to enter the interior of the flow through hole 16.

[0058] Through multiple toothed plates 17, the first gear 19, the transmission rod 18, the second gear 20, and the control ring 21, it is possible to better adapt to the expanded volume of the thermal expansion ring 11, timely control the flow blocking rod 23 to enter the interior of the flow through hole 16, reduce the flow rate of the damping liquid, and effectively avoid the problem that the viscosity of the damping liquid decreases due to the long-term use of the display screen 1, resulting in a reduction in the damping effect.

[0059] Embodiment 2: As Figures 9 to 10 shown, compared with Embodiment 1, another implementation manner of the present invention is:

[0060] A reciprocating lead screw 29 is rotatably installed inside the heat conduction tube 10, and a cleaning ring 12 is slidably installed on the outer wall of the reciprocating lead screw 29. The outer wall of the cleaning ring 12 is in contact with the inner wall of the heat conduction tube 10.

[0061] By rotating the reciprocating lead screw 29, the cleaning ring 12 can be driven to slide back and forth inside the heat conduction tube 10. Through the sliding of the cleaning ring 12, it is possible to effectively avoid the problem that the inner wall of the heat conduction tube 10 is accumulated with dust, reducing the problem of heat conduction.

[0062] A rotating shaft 25 is rotatably installed inside the conduction rod 7. A driving gear 27 is fixedly installed on the outer wall of the rotating shaft 25. A transmission gear 28 is fixedly installed on the outer wall of the reciprocating lead screw 29. The driving gear 27 meshes with the transmission gear 28. The number of reciprocating lead screws 29 is the same as the number of heat conduction tubes 10.

[0063] When the rotating shaft 25 rotates, it will drive the driving gear 27 to rotate, causing multiple transmission gears 28 to simultaneously drive multiple reciprocating lead screws 29 to rotate inside the heat conduction tubes 10, enabling the cleaning ring 12 to simultaneously clean the interiors of each heat conduction tube 10, effectively ensuring the heat conduction efficiency of the heat conduction tubes 10.

[0064] An impeller 26 that is driven to rotate by wind power is fixedly installed on the outer wall of the rotating shaft 25.

[0065] When the exhaust fan 4 starts, it will suck the gas outside the display screen 1 into the inside of the air collecting cavity 5 through the air inlet cavity 2. At this time, the gas entering the inside of the air collecting cavity 5 will enter the inside of the conduction groove 9 through the air guiding groove 6. By the impact of the gas on the impeller 26, the impeller 26 can be driven to drive the rotating shaft 25 to rotate, so that the driving gear 27 and multiple transmission gears 28 rotate, and the reciprocating lead screw 29 drives the cleaning ring 12 to clean the inside of each heat conduction tube 10 at the same time, effectively ensuring the heat conduction efficiency of the heat conduction tube 10.

[0066] Working principle: When the display screen 1 slides towards the mounting plate 3, the damping plate 8 is driven to slide inside the damping cavity 14 through the conduction rod 7. At this time, the damping plate 8 will squeeze the damping liquid. The squeezed damping liquid can pass through the multiple flow holes 16 provided. In this way, the potential energy of the display screen 1 driving the conduction rod 7 to move can be absorbed, effectively providing a damping effect for the display screen 1, and the problem that the spring is easily damaged by using the spring and the damping plate to achieve damping can be avoided.

[0067] By starting the exhaust fan 4, the gas outside the display screen 1 can be sucked into the inside of the air collecting cavity 5 through the air inlet cavity 2. At this time, the gas entering the inside of the air collecting cavity 5 will enter the inside of the conduction groove 9 through the air guiding groove 6. At the same time, the gas is transported to the exhaust groove 15 through the multiple heat conduction tubes 10 provided and discharged. At this time, the heat conduction tube 10 will absorb the heat energy and directly transfer the heat to the thermal expansion ring 11, causing the thermal expansion ring 11 to expand. When the thermal expansion ring 11 expands, it will press against the toothed plate 17, causing it to slide upward, thereby driving the first gear 19 to rotate. At the same time, the transmission rod 18 drives the second gear 20 to rotate. At this time, the control ring 21 drives the arc-shaped top block 22 to press against the flow blocking rod 23, causing it to enter the inside of the flow hole 16, reducing the flow rate of the damping liquid, and effectively avoiding the problem that the damping effect is reduced due to the decrease in the viscosity of the damping liquid caused by high temperature during the long-term use of the display screen 1.

[0068] By starting the exhaust fan 4, the gas outside the display screen 1 will be sucked into the inside of the air collecting cavity 5 through the air inlet cavity 2. At this time, the gas entering the inside of the air collecting cavity 5 will enter the inside of the conduction groove 9 through the air guiding groove 6. By the impact of the gas on the impeller 26, the impeller 26 can be driven to drive the rotating shaft 25 to rotate, so that the driving gear 27 and multiple transmission gears 28 rotate, and the reciprocating lead screw 29 drives the cleaning ring 12 to clean the inside of each heat conduction tube 10 at the same time, effectively ensuring the heat conduction efficiency of the heat conduction tube 10.

[0069] The above front, back, left, right, up, and down are all based on the Figure 1 description drawing of the specification. According to the standard of the observer's perspective, the side of the device facing the observer is defined as the front, and the left side of the observer is defined as the left, and so on.

[0070] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present invention.

[0071] The above shows and describes 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 by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An LED display screen, comprising a display screen (1) and a mounting plate (3); It is characterized in that: A damping cavity (14) for storing damping liquid is formed inside the mounting plate (3). One end of the display screen (1) close to the mounting plate (3) is fixedly installed with a conduction rod (7). One end of the conduction rod (7) extends into the damping cavity (14) and is fixedly installed with a damping plate (8). The outer wall of the damping plate (8) is in contact with the inner wall of the damping cavity (14); A plurality of flow holes (16) for the damping liquid to pass through are formed in the damping plate (8); A return spring (13) is arranged between the mounting plate (3) and the display screen (1); A flow-blocking rod (23) is slidably installed inside the damping plate (8). The number of the flow-blocking rods (23) is the same as that of the flow holes (16). A control ring (21) is rotatably installed inside the damping plate (8). An arc-shaped top block (22) for pressing the flow-blocking rod (23) is fixedly installed on the outer wall of the control ring (21).

2. An LED display according to claim 1, wherein: A transmission rod (18) is elastically installed inside the conduction rod (7). One end of the transmission rod (18) is fixedly installed with a second gear (20). A toothed ring is fixedly installed on the inner wall of the control ring (21). The second gear (20) is meshed with the toothed ring.

3. An LED display according to claim 2, characterized in that: A torsion spring (24) is fixedly connected to the outer wall of the transmission rod (18). The other end of the torsion spring (24) is fixedly connected to the inside of the conduction rod (7).

4. An LED display according to claim 3, characterized in that: A first gear (19) is fixedly installed at the end of the transmission rod (18) away from the second gear (20). A toothed plate (17) is slidably installed inside the conduction rod (7). The toothed plate (17) is meshed with the first gear (19). The number of the toothed plates (17) and the transmission rods (18) is the same as that of the flow holes (16).

5. An LED display according to claim 4, characterized in that: An air inlet cavity (2) is formed on the side wall of the display screen (1). An air collecting cavity (5) is formed inside the display screen (1). An exhaust fan (4) is arranged on the air collecting cavity (5). An air guiding groove (6) is formed in the air collecting cavity (5). A conduction groove (9) is formed inside the conduction rod (7). The air guiding groove (6) is communicated with the conduction groove (9).

6. The LED display according to claim 5, wherein: An exhaust groove (15) is formed inside the mounting plate (3). A heat conduction pipe (10) is fixedly installed inside the mounting plate (3). One end of the heat conduction pipe (10) extends into the conduction rod (7), and the other end penetrates through the damping cavity (14) and extends into the exhaust groove (15). A plurality of heat conduction pipes (10) are arranged, and the plurality of heat conduction pipes (10) are arranged in a circular pattern.

7. An LED display according to claim 6, characterized in that: A thermal expansion ring (11) is arranged inside the conduction rod (7). The thermal expansion ring (11) is sleeved on the outer walls of the plurality of heat conduction pipes (10). The inner wall of the thermal expansion ring (11) is in contact with the outer walls of the plurality of heat conduction pipes (10). The outer wall of the thermal expansion ring (11) abuts against the bottom end of the toothed plate (17).

8. An LED display according to claim 7, characterized in that: A reciprocating lead screw (29) is rotatably installed inside the heat conduction tube (10), a cleaning ring (12) is slidably installed on the outer wall of the reciprocating lead screw (29), and the outer wall of the cleaning ring (12) is attached to the inner wall of the heat conduction tube (10).

9. An LED display according to claim 8, characterized in that: A rotating shaft (25) is rotatably installed inside the conduction rod (7), a driving gear (27) is fixedly installed on the outer wall of the rotating shaft (25), a transmission gear (28) is fixedly installed on the outer wall of the reciprocating lead screw (29), the driving gear (27) is meshed with the transmission gear (28), and the number of the reciprocating lead screws (29) is the same as that of the heat conduction tubes (10).

10. An LED display according to claim 9, wherein: An impeller (26) driven to rotate by wind force is fixedly installed on the outer wall of the rotating shaft (25).

Images