Active moisture-proof LED display screen for outdoor arrangement

Abstract

The invention discloses an active moisture-proof LED display screen for outdoor arrangement, and relates to the technical field of LED display screens, the active moisture-proof LED display screen for outdoor arrangement comprises fixing frames, one side surface of each fixing frame is fixedly connected with a box body, the number of the fixing frames is two, the fixing frames are symmetrically arranged with the vertical center line of the box body as the reference, and the interior of the box body is fixedly connected with a display screen body. Rainwater can be effectively prevented from making direct contact with the display screen body and the interior of the box body, it is avoided that a circuit board and electronic elements are affected with damp, short circuit and even damaged due to rainwater invasion, the safety of the electronic elements is protected, the failure rate is reduced, chemical substances in rainwater can be prevented from corroding the display screen body, and the durability of equipment is enhanced; the drying agent used in the moisture absorption box is replaced, it is ensured that the drying agent keeps the good moisture absorption rate, internal moisture accumulation is prevented, and electronic elements are protected against damage of moisture.

Description

Technical Field

[0001] The present invention relates to the technical field of LED displays, and specifically to an actively moisture-proof LED display for outdoor layout. Background Art

[0002] An LED display (Light Emitting Diode Display) is a device that uses a display method by controlling semiconductor light-emitting diodes (LEDs) to display various information such as text, images, and videos. Due to its advantages of high brightness, low power consumption, long lifespan, and fast response speed, it is widely used in indoor and outdoor advertising, stadiums, stage performances, traffic signals, commercial displays, etc., and can provide people with clear, vivid, and real-time information display.

[0003] The following problems will occur in the existing LED displays during use:

[0004] The encapsulation materials of LED displays are mainly high-molecular materials such as epoxy resin. The gaps between the molecules of these materials are relatively large. During rainy or humid weather, gaseous water molecules in the air can penetrate into the shell through the gaps, making the inside of the shell become humid. The moisture will cause the copper foil on the circuit board to oxidize, forming an oxide layer, resulting in circuit open or short circuit. If the moisture enters the chip, it will cause the chip performance to decline or completely fail. In addition, the connector is prone to rust in a humid environment, resulting in poor contact and affecting signal transmission. At the same time, after the circuit board and connector are affected by moisture, they are prone to leakage, which will increase the risk of electric shock to the surrounding personnel.

[0005] In addition, after the gaseous water molecules entering the inside of the shell enter the LED lamp beads, it will cause the brightness of the lamp beads to decline or completely fail, and then lead to uneven brightness of the LED lamp beads, the appearance of dark spots or dead lights, making the image finally displayed on the LED display distorted or blurred.

[0006] Therefore, the present invention proposes an actively moisture-proof LED display for outdoor layout to make up for and improve the deficiencies of the existing technology. Summary of the Invention

[0007] (1) Technical Problems to be Solved

[0008] Aiming at the deficiencies of the existing technology, the present invention provides an actively moisture-proof LED display for outdoor layout, which solves the problems raised in the above background art.

[0009] (2) Technical Solutions

[0010] To achieve the above object, the present invention is realized by the following technical solutions: An active moisture-proof LED display screen for outdoor layout, including a fixing frame, one side surface of the fixing frame is fixedly connected with a box body, there are two fixing frames, and the fixing frames are symmetrically arranged with reference to the vertical center line of the box body. The inside of the box body is fixedly connected with a display screen body. The upper surface of the fixing frame is fixedly connected with a first baffle. One side surface of the fixing frame close to the box body is rotatably connected with a rotating shaft. The outer surface of the rotating shaft is fixedly connected with a blocking cloth, and the blocking cloth can be wound in a spiral shape on the outer surface of the rotating shaft. A slot is penetrated through the surface of the first baffle, and one end of the blocking cloth away from the rotating shaft extends to the outside of the first baffle through the slot. The outer surface of the rotating shaft is fixedly connected with a first runner, and the first runner is rotatably connected with the fixing frame. One of the fixing frames close to the box body is rotatably connected with a second runner. The outer surfaces of the first runner and the second runner are drivingly connected with a first belt. One side surface of the first belt close to the blocking cloth is fixedly connected with a slider, and the slider is fixedly connected with one end of the blocking cloth away from the rotating shaft. The slider is slidably connected with the fixing frame. One side of the blocking cloth away from the fixing frame is slidably connected with the other fixing frame through a sliding block fixedly connected with the blocking cloth.

[0011] Preferably, the rotating shaft, the blocking cloth, the slot, the first runner, the second runner, the first belt, and the slider are symmetrically distributed with reference to the vertical center line of the box body.

[0012] Preferably, a first scraper is fixedly connected to the outer surface of the first baffle. The first scraper is symmetrically arranged with reference to the vertical center line of the box body, and one side surface of the first scraper away from the first baffle can be attached to the surface of the blocking cloth away from the box body.

[0013] Preferably, connection blocks are fixedly connected to one side surface of the first belt close to the box body. A first chute is opened on one side surface of each connection block away from the first belt. Auxiliary rods are slidably connected inside the first chutes. Second scrapers are fixedly connected to the outer surfaces of the auxiliary rods close to the box body. One side surface of one of the fixing frames close to the box body is symmetrically provided with second chutes with reference to the vertical center line of the box body. One ends of the auxiliary rods away from the connection blocks are slidably connected inside the second chutes.

[0014] Preferably, the second chutes are all opened in an "O" shape, and inclined surfaces are provided at both the upper and lower ends of the second chutes, and the inclination directions of the inclined surfaces are opposite.

[0015] Preferably, heat dissipation holes are opened on one side surface of the box body away from the display screen body.

[0016] Preferably, a support rod is fixedly connected inside the box body. A moisture absorption box is slidably connected to the outer surface of the support rod. A spring is fixedly connected inside the box body. The top end of the spring is fixedly connected to the moisture absorption box. A stop bar is fixedly connected to one end of the support rod located inside the moisture absorption box. A first connecting pipe is communicated with the bottom of the moisture absorption box. The stop bar and the first connecting pipe are located in the same vertical section. A collection box is detachably connected to the outer surface of the box body. The bottom end of the first connecting pipe penetrates through the box body and is communicated with the collection box. A storage box is fixedly connected inside the box body. A second connecting pipe is communicated with the bottom of the storage box. One end of the second connecting pipe away from the storage box is communicated with the moisture absorption box.

[0017] Preferably, a baffle two is rotatably connected inside the second connecting pipe. A connecting rod is fixedly connected inside the moisture absorption box. One end of the connecting rod away from the moisture absorption box is slidably connected to the baffle two.

[0018] (III) Beneficial effects

[0019] The active moisture-proof LED display screen for outdoor layout provided by the present invention has the following beneficial effects:

[0020] 1. By providing a blocking cloth on the surface of the rotating shaft, when the optical rain sensor detects rain, the control device drives the first belt connected to the surface of the first runner to rotate through the driving mechanism. When the first belt rotates, the blocking cloth is driven by the slider connected to the blocking cloth to unfold from above the display screen body to below the display screen body. Since the blocking cloth is symmetrically arranged, the blocking cloth blocks both sides of the box body and the display screen body. The blocking cloth can effectively prevent rainwater from directly contacting the display screen body and the inside of the box body, avoid moisture, short circuit or even damage of the circuit board and electronic components caused by rainwater intrusion, protect the safety of electronic components, reduce the failure rate, reduce the maintenance cost, extend the service life of the equipment. The blocking cloth can also prevent the corrosion of the chemical substances in the rainwater to the display screen body, enhance the durability of the equipment, avoid the increase of dust attached to the surface of the display screen body caused by rainwater, reduce the cleaning frequency, simplify the maintenance work, and can also avoid electrical faults such as electric leakage caused by the influence of moisture on the electronic components, reduce the safety hazards during use, improve the use safety. Since the blocking cloth is made of polycarbonate material, it has extremely high transparency (almost completely transparent to light), excellent waterproof performance, and excellent impact resistance. While preventing rainwater penetration, it is not easy to break. Therefore, the blocking cloth will not affect the display effect of the display screen body, keep the clarity of the display screen body, and enable the equipment to operate stably in rainy days.

[0021] 2. By slidingly connecting the moisture-absorbing box with the support rod and fixedly connecting the moisture-absorbing box to the box body through a spring, after the desiccant inside the moisture-absorbing box has absorbed the moisture inside the box body for a period of time, the weight of the desiccant will increase, thereby increasing the weight of the moisture-absorbing box and causing it to move downward. After that, the used desiccant inside the moisture-absorbing box flows through the connecting pipe one into the collection box. When the moisture-absorbing box moves downward, the baffle two is driven to rotate through the connecting rod, so that the baffle two no longer blocks the connecting pipe two, and the unused desiccant inside the storage box flows into the moisture-absorbing box through the connecting pipe two to replace the used desiccant inside the moisture-absorbing box. This can ensure that the desiccant inside the moisture-absorbing box maintains a good moisture absorption rate, keep the inside of the box body dry all the time, prevent moisture accumulation, help protect electronic components from damage caused by moisture, reduce the corrosion of metal parts by moisture, and can also reduce circuit failures caused by moisture, as well as the decline in the display performance of the display screen body, keep the image clear and bright, and improve the reliability of the device. At the same time, when the desiccant inside the moisture-absorbing box absorbs moisture to a certain extent, it is automatically replaced, which can improve the maintenance efficiency, reduce the downtime caused by manual replacement of the desiccant, as well as the waste of desiccant caused by too frequent replacement, or the decline in moisture absorption effect caused by untimely replacement.

[0022] 3. By providing the first scraper on the surface of the first baffle, when the blocking cloth is retracted, the first scraper scrapes off the rainwater and dust on the surface of the blocking cloth, which can prevent dirt from accumulating on the surface of the blocking cloth, keep the blocking cloth clean, avoid the decrease in the transparency of the blocking cloth caused by dirt, make it always maintain high transparency during subsequent use, so that the final display effect is not affected, and can also avoid the growth of mold caused by the residual moisture on the surface after the blocking cloth is wound around the outer surface of the rotating shaft, keep the hygiene of the blocking cloth, reduce the aging and damage speed of the blocking cloth, and thus reduce the frequency and cost of replacing the blocking cloth.

[0023] 4. By setting the second chute in an "O" shape, and both the upper and lower ends of the second chute are provided with inclined surfaces, and the inclined directions of the inclined surfaces are opposite. When the first belt drives the auxiliary rod to move downward through the connecting block, the second scraper connected to the auxiliary rod can respectively contact the outer surface of the display screen body and the surface of the heat dissipation holes opened on the box body, and then clean the dust and impurities attached to its surface during the movement. Cleaning the surface of the display screen body can prevent the display screen body from displaying blurrily, improve visibility, and ensure that the audience can clearly see the display content. Cleaning the surface of the heat dissipation holes opened on the box body can ensure that the heat dissipation holes are unobstructed, prevent dust from accumulating at the heat dissipation holes, improve the heat dissipation efficiency, prevent the device from overheating, reduce failures and damages caused by overheating, and at the same time, can also prevent dust from entering the inside of the box body, reduce the risk of circuit short-circuit, and reduce the failure rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0025] Figure 2 is a schematic diagram of a partial structure of the main body of the present invention;

[0026] Figure 3 of the present invention Figure 2 is an enlarged schematic diagram of A in the present invention;

[0027] Figure 4 of the present invention Figure 2 is an enlarged schematic diagram of B in the present invention;

[0028] Figure 5 of the present invention Figure 2 is an enlarged schematic diagram of C in the present invention;

[0029] Figure 6 is a schematic diagram of a partial cross-section of the fixing frame and the first baffle of the present invention;

[0030] Figure 7 of the present invention Figure 6 is an enlarged schematic diagram of D in the present invention;

[0031] Figure 8 is a schematic diagram of a partial structure of the connecting block and the second scraper of the present invention;

[0032] Figure 9 is a schematic diagram of the side view three-dimensional structure of the main body of the present invention;

[0033] Figure 10 is a schematic diagram of a cross-section of the moisture absorption box and the second connecting pipe of the present invention.

[0034] The reference numerals in the figure respectively represent:

[0035] 1. Fixing frame; 2. Box body; 3. Display screen body; 4. First baffle; 5. Rotating shaft; 6. Baffle cloth; 7. Notch; 8. First runner; 9. Second runner; 10. First belt; 11. Slide block; 12. First scraper; 13. Connecting block; 14. First chute; 15. Auxiliary rod; 16. Second scraper; 17. Second chute; 18. Heat dissipation hole; 19. Support rod; 20. Moisture absorption box; 21. Spring; 22. Stop bar; 23. First connecting pipe; 24. Collection box; 25. Storage box; 26. Second connecting pipe; 27. Second baffle; 28. Connecting rod. Specific embodiments

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] Refer toFigures 1 to 10 According to a preferred embodiment of the present invention, an active moisture-proof LED display screen for outdoor arrangement will be described in detail below. An active moisture-proof LED display screen for outdoor arrangement includes a fixing frame 1, and an optical rain sensor for detecting rain is installed on the surface of the fixing frame 1. The optical rain sensor determines whether it is raining by the reflection or scattering of raindrops falling on the surface. The optical rain sensor drives the driving device to drive the rotating wheel 8 to rotate through the control device;

[0038] A box body 2 is fixedly connected to one side surface of the fixing frame 1. Two fixing frames 1 are provided. The fixing frames 1 are symmetrically arranged with the vertical center line of the box body 2 as a reference. A display screen body 3 is fixedly connected inside the box body 2. A baffle 4 is fixedly connected to the upper surface of the fixing frame 1. The baffle 4 is arranged in an arc shape, which helps to prevent rainwater from accumulating on the upper surface of the baffle 4. A rotating shaft 5 is rotatably connected to the surface of the fixing frame 1 close to the box body 2. A baffle cloth 6 is fixedly connected to the outer surface of the rotating shaft 5. The baffle cloth 6 is made of polycarbonate and has extremely high transparency (almost completely transparent to light), excellent waterproof performance, excellent impact resistance, and good weather resistance. While preventing rainwater from penetrating, it is not easy to break. It can maintain stable performance under different climatic conditions and is not prone to aging, deformation, etc.;

[0039] The baffle 6 can be spirally wound around the outer surface of the rotating shaft 5, and a slot 7 is formed on the surface of the baffle 4. The end of the baffle 6 away from the rotating shaft 5 extends to the outside of the baffle 4 through the slot 7. The outer surface of the rotating shaft 5 is fixedly connected with a wheel 8, which is rotatably connected to the fixed frame 1, and the wheel 8 is connected to the driving device. The optical rain sensor drives the driving device to rotate the wheel 8 through the control device, and one side of the fixed frame 1 close to the box body 2 is rotatably connected with a wheel 2 9, and the outer surfaces of the wheels 1 8 and the wheels 2 9 are transmission-connected with a belt 10, and the surface of the belt 10 close to the baffle 6 is fixedly connected with a slider 11, and the slider 11 is fixedly connected to the end of the baffle 6 away from the rotating shaft 5, and the slider 11 is slidably connected to the fixed frame 1, and the side of the baffle 6 away from the fixed frame 1 is slidably connected to another fixed frame 1 through a sliding block fixedly connected to the baffle 6.

[0040] The rotating shaft 5, the cloth stop 6, the notch 7, the first rotating wheel 8, the second rotating wheel 9, the first belt 10, and the sliding block 11 are all symmetrically distributed with reference to the vertical center line of the box body 2.

[0041] The outer surface of the baffle 4 is fixedly connected with a scraper 12 , which is symmetrically arranged with reference to the vertical center line of the box body 2 , and the side surface of the scraper 12 away from the baffle 4 can fit with the surface of the baffle cloth 6 away from the box body 2 .

[0042] On one side surface of the first belt 10 close to the box body 2, connecting blocks 13 are fixedly connected. On the side surface of the connecting blocks 13 away from the first belt 10, first sliding grooves 14 are opened. Inside the first sliding grooves 14, auxiliary rods 15 are slidably connected. On the outer surface of the auxiliary rods 15 close to the box body 2, second scraping plates 16 are fixedly connected. On one side surface of one of the fixing frames 1 close to the box body 2, second sliding grooves 17 are symmetrically opened with reference to the vertical center line of the box body 2. One ends of the auxiliary rods 15 away from the connecting blocks 13 are slidably connected inside the second sliding grooves 17.

[0043] The second sliding grooves 17 are all opened in an "O" shape, and the upper and lower ends of the second sliding grooves 17 are both provided with inclined surfaces, and the inclined directions of the inclined surfaces are opposite.

[0044] On the side surface of the box body 2 away from the display body 3, heat dissipation holes 18 are opened.

[0045] Inside the box body 2, a support rod 19 is fixedly connected. On the outer surface of the support rod 19, a moisture absorption box 20 is slidably connected. The surface of the moisture absorption box 20 is evenly provided with round holes, so that the desiccant inside the moisture absorption box 20 absorbs the moisture inside the box body 2. Inside the box body 2, a spring 21 is fixedly connected. The top end of the spring 21 is fixedly connected to the moisture absorption box 20. The spring 21 drives the moisture absorption box 20 after replacing the desiccant to reset. One end of the support rod 19 located inside the moisture absorption box 20 is fixedly connected with a stop strip 22. The bottom of the moisture absorption box 20 is communicated with a first connecting pipe 23. The stop strip 22 and the first connecting pipe 23 are located in the same vertical section. On the outer surface of the box body 2, a collection box 24 is detachably connected. The bottom end of the first connecting pipe 23 penetrates through the box body 2 and is communicated with the collection box 24. Inside the box body 2, a storage box 25 is fixedly connected. The bottom of the storage box 25 is communicated with a second connecting pipe 26. One end of the second connecting pipe 26 away from the storage box 25 is communicated with the moisture absorption box 20. Desiccants for absorbing the moisture inside the box body 2 are filled inside both the moisture absorption box 20 and the storage box 25.

[0046] Inside the second connecting pipe 26, a second baffle 27 is rotatably connected. Inside the moisture absorption box 20, a connecting rod 28 is fixedly connected. One end of the connecting rod 28 away from the moisture absorption box 20 is slidably connected with the second baffle 27.

[0047] The following is the entire working process and working principle of the above embodiment:

[0048] First, when the optical rain sensor detects rain, the optical rain sensor sends the detection result to the control device, and the control device drives the rotating wheel 8 located near the display screen body 3 to rotate counterclockwise and the rotating wheel 8 far from the display screen body 3 to rotate clockwise through the driving device. When the rotating wheel 8 near the display screen body 3 rotates counterclockwise, the rotating shaft 5 coaxially connected thereto is driven to rotate. When the rotating shaft 5 near the display screen body 3 rotates counterclockwise, the baffle 6 spirally wound around the outer surface of the rotating shaft 5 near the display screen body 3 is pulled out from the surface of the rotating shaft 5. The surface gradually falls off, and at the same time, when the rotating wheel 8 near the display screen body 3 rotates counterclockwise, the belt 10 connected to the outer surface of the rotating wheel 8 near the display screen body 3 drives the slider 11 fixedly connected to the belt 10 to move downward. Since the end of the blocking cloth 6 away from the rotating shaft 5 is fixedly connected to the slider 11, when the slider 11 near the display screen body 3 moves downward, it drives the blocking cloth 6 fixedly connected thereto and near the display screen body 3 to unfold from the top of the display screen body 3 to the bottom of the display screen body 3, so as to cover the display screen body 3;

[0049] When the rotating wheel 8 far away from the display screen body 3 rotates clockwise, it drives the rotating shaft 5 coaxially fixed thereto to rotate. When the rotating shaft 5 far away from the display screen body 3 rotates clockwise, the blocking cloth 6 spirally wound around the outer surface of the rotating shaft 5 far away from the display screen body 3 gradually falls off from the surface of the rotating shaft 5. At the same time, when the rotating wheel 8 far away from the display screen body 3 rotates clockwise, the belt 10 connected to the outer surface of the rotating wheel 8 on the side far away from the display screen body 3 drives the slider 11 fixedly connected to the belt 10 to move downward. Since one end of the blocking cloth 6 far away from the rotating shaft 5 is fixedly connected to the slider 11, the slider 11 far away from the side of the display screen body 3 moves downward, driving the blocking cloth 6 fixedly connected thereto and far away from the side of the display screen body 3 to unfold from the top of the display screen body 3 to the bottom of the display screen body 3 to cover the box 2.

[0050] With the above structure, when it rains, the baffle cloth 6 can effectively prevent rainwater from directly contacting the display body 3 and the interior of the box body 2, avoiding moisture, short circuits or even damage to the circuit board and electronic components caused by rainwater intrusion, protecting the safety of the electronic components, reducing the failure rate, reducing the maintenance cost, extending the service life of the equipment. The baffle cloth 6 can also prevent the chemical substances in the rainwater from corroding the display body 3, enhancing the durability of the equipment, avoiding an increase in dust adhering to the surface of the display body 3 caused by rainwater, reducing the cleaning frequency, simplifying the maintenance work, and can also avoid electrical faults such as electric leakage caused by the electronic components being affected by moisture, reducing the potential safety hazards during use, and improving the use safety. Since the baffle cloth 6 is made of polycarbonate material, it has extremely high transparency (almost completely transparent to light), excellent waterproof performance, and excellent impact resistance. While preventing rainwater penetration, it is not easy to break. Therefore, the baffle cloth 6 will not affect the display effect of the display body 3, maintaining the clarity of the display of the display body 3, enabling the equipment to operate stably even in rainy days.

[0051] Next, when the rain stops, the control device drives the first runner 8 located near the display body 3 to rotate clockwise through the driving device, and the first runner 8 located far from the display body 3 to rotate counterclockwise. When the first runner 8 near the display body 3 rotates clockwise, it drives the coaxial fixed-connected rotating shaft 5 to rotate. When the rotating shaft 5 near the display body 3 rotates clockwise, the baffle cloth 6 near the display body 3 is wound around the outer surface of the rotating shaft 5 in a spiral shape, so that the baffle cloth 6 no longer blocks the display body 3.

[0052] When the first runner 8 far from the display body 3 rotates counterclockwise, it drives the coaxial fixed-connected rotating shaft 5 to rotate. When the rotating shaft 5 far from the display body 3 rotates clockwise, the baffle cloth 6 far from the display body 3 is wound around the outer surface of the rotating shaft 5 in a spiral shape, so that the baffle cloth 6 no longer blocks the box body 2.

[0053] Since there is a first scraper 12 symmetrically arranged on the surface of the first baffle 4 with the vertical center line of the box body 2 as the reference, and the surface of the first scraper 12 far from the first baffle 4 can be attached to the surface of the baffle cloth 6 far from the box body 2, therefore, when the baffle cloth 6 is retracted and wound around the surface of the rotating shaft 5, the first scraper 12 can scrape off the rainwater and dust on the surface of the baffle cloth 6, preventing dirt from accumulating on the surface of the baffle cloth 6, keeping the baffle cloth 6 clean, avoiding a decrease in the transparency of the baffle cloth 6 caused by dirt, enabling it to always maintain high transparency during subsequent use, so that the final display effect is not affected, and can also avoid the growth of mold caused by the residual moisture on the surface after the baffle cloth 6 is wound around the outer surface of the rotating shaft 5, keeping the baffle cloth 6 hygienic, reducing the aging and damage speed of the baffle cloth 6, and thus reducing the frequency and cost of replacing the baffle cloth 6.

[0054] Secondly, when the first runner 8 near the display body 3 drives the first belt 10 to rotate clockwise, the first belt 10 near the display body 3 drives the connecting block 13 fixedly connected thereto to move downward. When the connecting block 13 near the display body 3 moves downward, it drives the auxiliary rod 15 connected thereto through the first chute 14 to move downward. Since one end of the auxiliary rod 15 far from the connecting block 13 is slidably connected to the inside of the second chute 17, the second chutes 17 are all opened in an "O" shape, and inclined surfaces are provided at the upper and lower ends of the second chute 17, and the inclination directions of the inclined surfaces are opposite. Therefore, when the first chute 14 near the display body 3 moves downward, it drives the second scraper 16 fixedly connected to the first chute 14 to fit the outer surface of the display body 3, cleaning the dirt attached to the surface of the display body 3. Cleaning the surface of the display body 3 can prevent the display body 3 from displaying blurrily, improve visibility, and ensure that the audience can clearly see the display content;

[0055] When the first runner 8 far from the display body 3 drives the first belt 10 to rotate counterclockwise, the first belt 10 far from the display body 3 drives the connecting block 13 fixedly connected thereto to move downward. When the connecting block 13 far from the display body 3 moves downward, it drives the auxiliary rod 15 connected thereto through the first chute 14 to move downward. Since one end of the auxiliary rod 15 far from the connecting block 13 is slidably connected to the inside of the second chute 17, the second chutes 17 are all opened in an "O" shape, and inclined surfaces are provided at the upper and lower ends of the second chute 17, and the inclination directions of the inclined surfaces are opposite. Therefore, when the first chute 14 far from the display body 3 moves downward, it drives the second scraper 16 fixedly connected to the first chute 14 to fit the side surface of the box body 2 provided with the heat dissipation holes 18, cleaning the dust attached to the surface of the box body 2 at the position where the heat dissipation holes 18 are provided. Cleaning the position where the heat dissipation holes 18 are provided on the surface of the box body 2 can ensure that the heat dissipation holes 18 are unobstructed, prevent dust from accumulating at the heat dissipation holes 18, improve the heat dissipation efficiency, prevent the equipment from overheating, reduce failures and damages caused by overheating. At the same time, it can also prevent dust from entering the inside of the box body 2, reduce the risk of short circuits in the circuit, and reduce the failure rate.

[0056] Finally, after the desiccant inside the moisture absorption box 20 has been used for a period of time, during the process of the desiccant absorbing the moisture inside the box body 2, the weight of the desiccant will increase, thereby increasing the weight of the moisture absorption box 20 that holds the desiccant. Since the moisture absorption box 20 is slidably connected to the support rod 19 and the moisture absorption box 20 is fixedly connected to the box body 2 through the spring 21, and the spring 21 has a certain elasticity. Therefore, after the weight of the moisture absorption box 20 increases, the spring 21 is gradually compressed, and the moisture absorption box 20 moves downward. After the moisture absorption box 20 moves downward for a certain distance, the stop strip 22 fixedly connected to the support rod 19 and located inside the moisture absorption box 20 no longer blocks the communication between the moisture absorption box 20 and the first connecting pipe 23. At this time, the used desiccant inside the moisture absorption box 20 can flow into the collection box 24 through the first connecting pipe 23. At the same time, when the moisture absorption box 20 moves downward, it drives the connecting rod 28 fixedly connected to the moisture absorption box 20 to move downward. When the connecting rod 28 moves downward, it drives the second baffle 27 slidably connected to it to rotate inside the second connecting pipe 26. After the second baffle 27 rotates, it no longer blocks the second connecting pipe 26. At this time, the unused desiccant inside the storage box 25 can flow into the moisture absorption box 20 through the second connecting pipe 26 to replace the used desiccant inside the moisture absorption box 20, which can ensure that the desiccant inside the moisture absorption box 20 maintains a good moisture absorption rate, keep the inside of the box body 2 in a dry environment all the time, prevent moisture accumulation, help protect electronic components from damage caused by moisture, reduce the corrosion of metal parts by moisture, and can also reduce circuit failures caused by moisture, as well as the decline in the display performance of the display screen body 3, keep the image clear and bright, and improve the reliability of the device. At the same time, when the desiccant inside the moisture absorption box 20 absorbs moisture to a certain extent and is automatically replaced, the maintenance efficiency can be improved, and the downtime caused by manual replacement of the desiccant, as well as the waste of desiccant caused by too frequent replacement, or the decline in the moisture absorption effect caused by untimely replacement, can be reduced.

[0057] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An active moisture-proof LED display screen for outdoor arrangement, comprising a fixing frame (1), a box body (2) is fixedly connected to one side surface of the fixing frame (1), two fixing frames (1) are provided, the fixing frames (1) are symmetrically arranged with the vertical center line of the box body (2) as a reference, and a display screen body (3) is fixedly connected inside the box body (2), characterized in that: The upper surface of the fixed frame (1) is fixedly connected to a baffle plate (4); a side surface of the fixed frame (1) close to the box body (2) is rotatably connected to a rotating shaft (5); a baffle cloth (6) is fixedly connected to the outer surface of the rotating shaft (5); the baffle cloth (6) can be spirally wound around the outer surface of the rotating shaft (5); a notch (7) is formed through the surface of the baffle plate (4); an end of the baffle cloth (6) away from the rotating shaft (5) extends to the outside of the baffle plate (4) through the notch (7); a rotating wheel (8) is fixedly connected to the outer surface of the rotating shaft (5); the rotating wheel (8) is rotatably connected to the fixed frame (1) The fixing frame (1) is rotatably connected to a rotating wheel (9) on one side close to the box body (2); the outer surfaces of the rotating wheel (8) and the rotating wheel (9) are transmission-connected to a belt (10); the surface of the belt (10) on one side close to the cloth stop (6) is fixedly connected to a slider (11); the slider (11) is fixedly connected to an end of the cloth stop (6) away from the rotating shaft (5); the slider (11) is slidably connected to the fixing frame (1); and the side of the cloth stop (6) away from the fixing frame (1) is slidably connected to the other fixing frame (1) via a sliding block fixedly connected to the cloth stop (6).

2. The active moisture-proof LED display screen for outdoor deployment according to claim 1, characterized in that: The rotating shaft (5), the blocking cloth (6), the notch (7), the first rotating wheel (8), the second rotating wheel (9), the first belt (10), and the sliding block (11) are all symmetrically distributed with reference to the vertical center line of the box body (2).

3. The active moisture-proof LED display screen for outdoor deployment according to claim 1, characterized in that: The outer surface of the baffle plate 1 (4) is fixedly connected to a scraper plate 1 (12), and the scraper plate 1 (12) is symmetrically arranged with the vertical center line of the box body (2) as a reference. The side surface of the scraper plate 1 (12) away from the baffle plate 1 (4) can be in contact with the surface of the baffle cloth (6) away from the box body (2).

4. The active moisture-proof LED display screen for outdoor deployment according to claim 1, characterized in that: The surface of the belt 1 (10) on one side close to the box body (2) is fixedly connected with a connecting block (13), the surface of the connecting block (13) on one side away from the belt 1 (10) is provided with a sliding groove 1 (14), the interior of the sliding groove 1 (14) is slidably connected with an auxiliary rod (15), the outer surface of the auxiliary rod (15) close to the box body (2) is fixedly connected with a scraper 2 (16), and the surface of one side of the fixed frame (1) close to the box body (2) is provided with a sliding groove 2 (17) symmetrically opened with the vertical center line of the box body (2) as a reference, and the end of the auxiliary rod (15) away from the connecting block (13) is slidably connected to the interior of the sliding groove 2 (17).

5. The active moisture-proof LED display screen for outdoor deployment according to claim 4, characterized in that: The second slide groove (17) is opened in an "O" shape, and the upper and lower ends of the second slide groove (17) are both provided with inclined surfaces, and the inclined directions of the inclined surfaces are opposite.

6. The active moisture-proof LED display screen for outdoor deployment according to claim 1, characterized in that: A heat dissipation hole (18) is provided on a surface of a side of the box body (2) away from the display screen body (3).

7. The active moisture-proof LED display screen for outdoor deployment according to claim 1, characterized in that: The interior of the box body (2) is fixedly connected to a support rod (19), the outer surface of the support rod (19) is slidably connected to a moisture absorption box (20), the interior of the box body (2) is fixedly connected to a spring (21), the top end of the spring (21) is fixedly connected to the moisture absorption box (20), one end of the support rod (19) located inside the moisture absorption box (20) is fixedly connected to a baffle (22), the bottom of the moisture absorption box (20) is connected to a connecting pipe 1 (23), the baffle (22) and connecting tube 1 (23) are located on the same vertical section, the outer surface of the box body (2) is detachably connected to a collecting box (24), the bottom end of the connecting tube 1 (23) passes through the box body (2) and is connected to the collecting box (24), the interior of the box body (2) is fixedly connected to a storage box (25), the bottom of the storage box (25) is connected to connecting tube 2 (26), and the end of the connecting tube 2 (26) away from the storage box (25) is connected to the moisture absorption box (20).

8. The active moisture-proof LED display screen for outdoor deployment according to claim 7, characterized in that: The second connecting tube (26) is rotatably connected to the second baffle (27) inside, the moisture absorption box (20) is fixedly connected to the inside of a connecting rod (28), and one end of the connecting rod (28) away from the moisture absorption box (20) is slidably connected to the second baffle (27).

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