A dust-proof and moisture-proof LED module display screen for outdoor use

Abstract

The present invention discloses a dustproof and moisture-proof LED module display screen for outdoor use, and relates to the field of LED display screens. A dustproof and moisture-proof LED module display screen for outdoor use comprises a plurality of display screens and a plurality of fixed frames, wherein the plurality of display screens are spliced ​​together, and a protective box is provided on the back of each display screen, and each fixed frame crosses the back of the display screen and is located above the protective box, wherein the display screen is fixed on the side of the fixed frame, and the display screen is located inside the protective box and is provided with a circuit controller and a power connection board. The present invention also provides a sealing plate, which can send external air and rainwater to the outside of a heat sink through fan blades in a rainy environment, and dissipate heat inside the display screen through the heat sink, thereby avoiding excessive reduction in the heat dissipation effect of the display screen, and at the same time, the relatively arranged fan blades can allow airflow and part of rainwater to be discharged through a second air groove, so that airflow and rainwater are discharged from the inside to the outside.

Description

Technical Field

[0001] The invention relates to the field of LED display screens, in particular to a dustproof and moisture-proof LED module display screen for outdoor use. Background Art

[0002] Outdoor LED display screens, as the new favorite of outdoor display advertising media in the future, are widely used in various industries. They have the purposes of media display, information release, traffic guidance, creative display, etc. The area is usually tens of square meters to hundreds of square meters. They have high brightness and large viewing angle. They can work in the sun and have certain windproof, rainproof and waterproof functions. And because the display screen area is large, usually the group of LED module display screens are fixed together by chemical splicing to form a complete display screen.

[0003] For this reason, LED display screens are usually composed of multiple groups of modules during outdoor use. However, there will inevitably be gaps behind each group of display screens. In rainy weather, rainwater can easily enter the LED display screens through the gaps. If a caulking structure is used to seal the gaps, the heat dissipation effect of the display screen will be reduced. In addition, the module display screen area is usually large and the temperature is high. Outdoor display screens are usually kept in operation for a long time. If additional heat dissipation is not performed, the display screen will not operate at an appropriate temperature, resulting in a reduced life of the display screen. Summary of the invention

[0004] Based on this, the purpose of the present invention is to provide a dustproof and moisture-proof LED module display screen for outdoor use, so as to solve the technical problems that the gaps between the display screens easily cause the display screens to get damp, and the sealing causes the heat dissipation effect of the display screen to be reduced.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a dustproof and moisture-proof LED module display screen for outdoor use, comprising a plurality of display screens and a plurality of fixed frames, the plurality of display screens are spliced ​​together, and a protection box is provided on the back of each display screen, each fixed frame crosses the back of the display screen and is located above the protection box, the display screen is fixed on the side of the fixed frame, the display screen is provided with a circuit controller and a power connection board inside the protection box, a plurality of sealing plates are provided inside the protection box on the outside of the circuit controller and the power connection board, each sealing plate is fitted with the circuit controller and the power connection board, movable heat sinks are provided on both sides of the sealing plate of the protection box, the movable heat sinks are movably connected to the protection box through a transmission mechanism, heat conductive strips are connected on both sides of the sealing plate, fan blades are respectively installed on the top and bottom of the sealing plate, a first air groove is provided at a relative position between the protection box and the fan blades, a heat sink is provided on the side of the sealing plate between the two groups of fan blades, a second air groove is provided at a relative position between the protection box and the heat sink, and the movable heat sink and the sealing plate can be sealed and engaged.

[0006] By adopting the above technical solution, the display screen can be easily cooled through multiple heat dissipation methods, and in rainy weather, the inside of the display screen can be sealed through the movable heat sink, thereby preventing rainwater from entering the inside of the display screen and improving the sealing effect.

[0007] The present invention is further configured such that the fixing frame is provided with a support frame on the back of each group of display screens, the support frame is fitted with the back of the display screens, and the support frame is fixedly connected to the protection box of the display screens by bolts.

[0008] By adopting the above technical solution, the display screen can be limited by the fixed frame, so that each group of display screens can be spliced ​​together.

[0009] The present invention is further configured such that the sealing plate is provided with a first filter between each group of first filters and the first air groove, the first filter is fitted with the first air groove, a second filter is installed on the outer side of the second air groove, and the second filter is fixedly connected to the protection box by bolts.

[0010] By adopting the above technical solution, the airflow entering the interior of the display screen can be filtered to prevent impurities from entering the display screen.

[0011] The present invention is further configured such that a drive motor is installed on the side of each group of movable heat sinks inside the protection box, and both output ends of the drive motor are connected to a drive shaft. A limited rotation shaft is provided on the inner side of the protection box, and two groups of transmission belts are sleeved on the outer sides of the drive shaft and the limited rotation shaft, and the two groups of transmission belts are symmetrically arranged relative to the drive motor.

[0012] By adopting the above technical solution, the transmission belt can be driven to rotate by the driving motor.

[0013] The present invention is further configured such that each group of the movable heat sinks located on the inner side of the protection box is provided with a protruding plate, and the sealing plates located on both sides of the heat sink are provided with sealing strips matching the protruding plates, and the outer sides of the protruding plates are provided with two groups of connecting joints matching the transmission belts, and the protruding plates are fixedly connected to the driving motor via the connecting joints, and the driving motor drives the movable heat sinks to slide inside and outside the protective box via the transmission belt.

[0014] By adopting the above technical solution, the movable heat sink can be driven to move by the transmission belt.

[0015] The present invention is further configured such that a mounting bracket is provided on the outside of each group of driving motors, the driving motors are fixedly connected to the inner wall of the protection box through the mounting bracket, a fine-tuning cylinder is installed below the mounting bracket, the output end of the fine-tuning cylinder extends to the bottom of the driving motor and is connected to a limiting plate, and the limiting plate is snap-connected with the bottom of the protruding plate.

[0016] By adopting the above technical solution, it is convenient to limit the movable heat sink. When the movable heat sink is located outside the protection box, the movable heat sink is fixed by the limiting plate. When the movable heat sink needs to be moved, the limiting plate is retracted by the fine-tuning cylinder.

[0017] The present invention is further configured such that two groups of heat-conducting strips located at the ends of the limiting rotating shafts are provided with connecting shaft seats on their sides, and the limiting rotating shafts are movably connected to the heat-conducting strips via the connecting shaft seats. The inner wall of the protection box is also provided with a connecting shaft seat matching the driving shaft, and the driving shaft is movably connected to the protection box via the connecting shaft seats.

[0018] By adopting the above technical solution, the driving shaft and the limiting rotating shaft can be conveniently limited.

[0019] The present invention is further configured such that the heat dissipation plates are vertical plate-like structures, and each group of heat dissipation plates are arranged parallel to the movable heat sink, adjacent heat dissipation plates directly form a flow groove, and the flow groove is connected to the adjacent first filter screen.

[0020] By adopting the above technical solution, the contact area between the airflow and the heat sink can be conveniently increased, thereby improving the heat dissipation effect of the heat sink.

[0021] The present invention is further configured such that the heat sink is a horizontal plate-like structure, and each group of heat sinks is vertically arranged with respect to the movable heat sink, and absorbent cotton is provided on both sides of each group of heat sinks, and a humidity sensor is installed inside the absorbent cotton.

[0022] By adopting the above technical solution, the airflow can flow through the heat sink conveniently, so that the airflow inside the display screen can be easily discharged, thereby increasing the heat dissipation effect.

[0023] In summary, the present invention mainly has the following beneficial effects:

[0024] 1. The present invention can increase the contact area between the display screen and the outside air through the movable heat sink, the sealing plate and the groups of air grooves during the use of the display screen, thereby improving the heat dissipation effect. If the temperature of the display screen cannot be reduced at this time, the fan blades are started clockwise, and the fan blades discharge the hot air inside the display screen through the first air grooves, and inhale the outside air through the second air grooves, thereby further cooling the inside of the display screen and improving the cooling effect.

[0025] 2. The present invention is provided with movable heat sinks, sealing plates and driving motors. In rainy weather, the driving motor can drive the driving shaft to rotate, the transmission shaft drives the transmission belt to move, and the transmission belt drives the movable heat sink to move, so that the movable heat sink is inserted into the protection box, and the two groups of movable heat sinks and the sealing plate form a sealing structure, thereby sealing and isolating the first air groove and the second air groove, so that external rainwater will not enter the interior of the display screen, thereby achieving an isolation effect.

[0026] 3. The present invention also uses the sealing plate to send external air and rainwater to the outside of the heat sink through the fan blades in a rainy environment, and dissipate heat to the inside of the display screen through the heat sink, thereby avoiding excessive reduction in the heat dissipation effect of the display screen. At the same time, the relatively arranged fan blades can allow the airflow and part of the rainwater to be discharged through the second air groove, so that the airflow and rainwater are discharged from the inside to the outside, thereby cleaning the second filter screen and improving the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the display screen installation structure of the present invention;

[0028] Figure 2 It is a schematic diagram of the installation structure of the display screen and the fixing frame of the present invention;

[0029] Figure 3 It is a schematic diagram of the display screen structure of the present invention;

[0030] Figure 4 It is a schematic diagram of a partial cross-sectional structure of a display screen of the present invention;

[0031] Figure 5 This is a schematic diagram of the exploded structure of the display screen of the present invention;

[0032] Figure 6 It is a schematic diagram of the exploded structure of the heat dissipation sealing mechanism of the present invention;

[0033] Figure 7 It is a schematic diagram of the structure of the movable heat sink of the present invention;

[0034] Figure 8 For the present invention Figure 7 A schematic diagram of the partially enlarged structure at center A;

[0035] Fig. 9 This is a schematic diagram of the structure in which the movable heat dissipation plate of the present invention extends to the outside of the protection box;

[0036] Fig.10 This is a schematic diagram of the structure of the movable heat sink of the present invention being inserted into the inner side of the protection box;

[0037] Fig.11 FIG. 4 is a schematic diagram of the heat dissipation plate structure in the second embodiment of the present invention.

[0038] In the figure: 1. display screen; 101. protection box; 102. first air groove; 103. second air groove; 104. circuit controller; 105. power board; 2. fixing frame; 201. support frame; 3. movable heat sink; 301. protruding plate; 302. connecting joint; 4. sealing plate; 401. thermal conductive strip; 402. heat sink; 403. first filter; 404. fan blade; 405. absorbent cotton; 5. driving motor; 501. driving shaft; 502. limiting rotating shaft; 503. transmission belt; 504. mounting frame; 505. fine-tuning cylinder; 506. limiting plate; 507. support frame; 6. second filter. DETAILED DESCRIPTION

[0039] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0040] The following describes an embodiment of the present invention based on its overall structure.

[0041] A dustproof and moisture-proof LED module display screen for outdoor use, such as Figures 1 to 10 As shown, it includes multiple groups of display screens 1 and multiple groups of fixing frames 2. The multiple groups of display screens 1 are spliced ​​together, and a protection box 101 is opened on the back of each group of display screens 1. Each group of fixing frames 2 crosses the back of the display screen 1 and is located above the protection box 101. The display screen 1 is fixed to the side of the fixing frame 2. The display screen 1 is located inside the protection box 101 and is opened with a circuit controller 104 and a power board 105.

[0042] The interior of the protection box 101 is provided with multiple groups of sealing plates 4 on the outside of the circuit controller 104 and the power connection board 105, and each group of sealing plates 4 is in contact with the circuit controller 104 and the power connection board 105. The protection box 101 is provided with movable heat sinks 3 on both sides of the sealing plates 4, and thermal conductive strips 401 are connected to both sides of the sealing plates 4. Fan blades 404 are respectively installed on the top and bottom ends of the sealing plates 4. A first air groove 102 is provided at a relative position between the protection box 101 and the fan blades 404, and a heat sink 402 is provided on the side of the sealing plate 4 between the two groups of fan blades 404. The heat sink 402 is a vertical plate-shaped structure, and each group of heat sinks 402 is arranged parallel to the movable heat sink 3, and adjacent heat sinks 402 directly form a flow groove, which is connected to the adjacent first filter screen 403. A second air groove 103 is provided at a relative position between the protection box 101 and the heat sink 402, and the movable heat sink 3 and the sealing plate 4 can be sealed and engaged, and the movable heat sink 3 will display The heat inside the screen 1 is transferred to the outside air, thereby cooling the inside of the display screen 1. If the cooling effect is not obvious, the fan blade 404 is started, and the fan blade 404 rotates clockwise to drive the hot air inside the display screen 1 to be discharged through the first air groove 102. The first filter 403 prevents impurities from entering the display screen 1, and drives the airflow to enter the inside of the display screen 1 from the second air groove 103, and filters the impurities in the air on the outside of the display screen 1 through the second filter 6. A plurality of heat sinks 402 are provided on the outside of the sealing plate 4, and heat conducting strips 401 are provided on both sides of the sealing plate 4 to fit the outside of the circuit controller 104 or the power board 105, so that the heat generated by them can be transferred to the heat sink 402 of the sealing plate 4 through the heat conducting strips 401. After the airflow passes through the heat sink 402, the airflow absorbs the heat and discharges it through the first filter 403, thereby further dissipating the heat inside the display screen 1, thereby improving the heat dissipation effect of the display screen 1.

[0043] Each group of movable heat sinks 3 is provided with a protruding plate 301 on the inner side of the protection box 101, and the sealing plate 4 is provided with sealing strips matching the protruding plate 301 on both sides of the heat sink 402, and a connecting joint 302 is provided on the outer side of the protruding plate 301. A driving motor 5 is installed on the side of each group of movable heat sinks 3 in the protection box 101, and the two output ends of the driving motor 5 are connected to a driving shaft 501. A limited rotation shaft 502 is provided on the inner side of the protection box 101, and two groups of transmission belts 503 are sleeved on the outer sides of the driving shaft 501 and the limited rotation shaft 502. The two groups of transmission belts 503 are sleeved on the outer sides of the two transmission belts 503. 03 are symmetrically arranged relative to the drive motor 5, and a mounting bracket 504 is provided on the outer side of each group of drive motors 5. The drive motor 5 is fixedly connected to the inner wall of the protection box 101 through the mounting bracket 504. A fine-tuning cylinder 505 is installed below the mounting bracket 504. The output end of the fine-tuning cylinder 505 extends to the bottom of the drive motor 5 and is connected with a limiting plate 506. The limiting plate 506 is snap-connected with the bottom of the protruding plate 301. The protruding plate 301 is fixedly connected to the drive motor 5 through the connecting joint 302. The drive motor 5 drives the movable heat sink 3 to slide inside and outside the protection box 101 through the transmission belt 503.

[0044] If it rains when the display screen 1 is in use, the drive motor 5 and the fine-tuning cylinder 505 inside the display screen 1 are started, the fine-tuning cylinder 505 drives the limit plate 506 to separate from the protruding plate 301, the drive motor 5 drives the drive shaft 501 to rotate, the drive shaft 501 drives the outer transmission belt 503 to rotate, the transmission belt 503 drives the movable heat sink 3 to be inserted into the display screen 1 through the connecting joint 302, until the bottom end of the movable heat sink 3 is fitted with the sealing plate 4, at this time the sealing strip on the protruding plate 301 and the sealing plate 4 are engaged, at this time the display screen 1 is isolated from the outside by the movable heat sink 3 and the sealing plate 4, to prevent rainwater from leaking into the display screen 1, thereby performing moisture-proof treatment on the display screen 1.

[0045] See also Figure 1 and Figure 2 The fixing frame 2 is located on the back of each group of display screens 1 and is provided with a support frame 201. The support frame 201 is fitted with the back of the display screen 1 and is fixedly connected to the protection box 101 of the display screen 1 by bolts, so that the display screen 1 can be conveniently limited and fixed, so that each group of display screens 1 can be spliced.

[0046] See also Figures 4 to 5 A first filter 403 is provided between each group of first filters 403 and the first air groove 102 on the sealing plate 4. The first filter 403 fits the first air groove 102. A second filter 6 is installed on the outer side of the second air groove 103. The second filter 6 is fixedly connected to the protective box 101 by bolts, and can filter the airflow through the filter to prevent impurities from entering the display screen 1.

[0047] See also Figures 5 to 7 The two groups of heat-conducting strips 401 at the ends of the limiting rotating shaft 502 are provided with connecting shaft seats on their sides, and the limiting rotating shaft 502 is movably connected to the heat-conducting strip 401 through the connecting shaft seats. The inner wall of the protection box 101 is also provided with a connecting shaft seat matching the driving shaft 501, and the driving shaft 501 is movably connected to the protection box 101 through the connecting shaft seat.

[0048] See also Fig.11 , which is the second embodiment of the present invention. The difference from the first embodiment is that the structure of the heat sink 402 is different. Specifically, the heat sink 402 is a horizontal plate structure, and each group of heat sinks 402 is vertically arranged with the movable heat sink 3. Water-absorbing cotton 405 is provided on both sides of each group of heat sinks 402. A humidity sensor is installed inside the water-absorbing cotton 405, which can conveniently flow the heat inside the display screen 1 into the sealing plate 4, thereby improving the heat dissipation effect. At the same time, the humidity sensor can detect the ambient humidity. When the humidity is high, the movable heat sink 3 is started to combine with the sealing plate 4 for sealing.

[0049] Before using the display screen 1, it is necessary to first assemble each group of fixing frames 2, and then install the display screen 1 on the support frame 201 on the fixing frame 2 in turn. The support frame 201 fixes and limits each group of display screens 1 through bolts, and splices the display screens 1. The display screens 1 are connected to the external control power supply through wires so that the display screens 1 can operate normally, and the assembly of the display screens 1 is completed;

[0050] During the use of the display screen 1, the circuit controller 104 and the power board 105 inside the display screen 1 generate heat, which needs to be dissipated. First, multiple groups of active heat sinks 3 are extended outside the protection box 101. The active heat sinks 3 conduct the heat inside the display screen 1 to the outside air, thereby cooling the inside of the display screen 1. If the cooling effect is not obvious, the fan blades 404 are started, and the fan blades 404 rotate clockwise to drive the hot air inside the display screen 1 to be discharged through the first air groove 102. The first filter 403 prevents impurities from entering the display screen 1, and drives the airflow from the second air groove 104. 103 enters the interior of the display screen 1, and the impurities in the air are filtered out of the display screen 1 through the second filter 6. A plurality of heat sinks 402 are provided on the outside of the sealing plate 4, and heat conducting strips 401 are provided on both sides of the sealing plate 4 to fit the outside of the circuit controller 104 or the power board 105, so that the heat generated by the heat conducting strips 401 can be transferred to the heat sink 402 of the sealing plate 4. After the airflow passes through the heat sink 402, the airflow absorbs the heat and discharges it through the first filter 403, so as to further dissipate the heat inside the display screen 1, thereby improving the heat dissipation effect of the display screen 1;

[0051] If it rains during the use of the display screen 1, the drive motor 5 and the fine-tuning cylinder 505 inside the display screen 1 are started, the fine-tuning cylinder 505 drives the limit plate 506 to separate from the protruding plate 301, the drive motor 5 drives the drive shaft 501 to rotate, the drive shaft 501 drives the outer transmission belt 503 to rotate, the transmission belt 503 drives the movable heat sink 3 to be inserted into the display screen 1 through the connecting joint 302, until the bottom end of the movable heat sink 3 is in contact with the sealing plate 4, at this time the sealing strip on the protruding plate 301 and the sealing plate 4 are engaged, at this time the display screen 1 is isolated from the outside by the movable heat sink 3 and the sealing plate 4, to prevent rainwater from leaking into the inside of the display screen 1, thereby performing moisture-proof treatment on the display screen 1, but at this time the inside of the display screen 1 is isolated from the movable heat sink 3 and the sealing plate 4, the airflow inside the display screen 1 cannot enter the inside of the display screen 1 to dissipate the heat of the display screen 1, at this time The fan blades 404 are started counterclockwise, and the fan blades 404 inhale the outside air and rainwater through the first air grooves 102 above (the fan blades 404 below the display screen 1 only inhale air), and filter the impurities through the first filter 403. The airflow and rainwater pass through the multiple groups of heat sinks 402 to absorb the heat generated by the display screen 1, and then the air is discharged through the second air grooves 103, and the impurities attached to the second filter screen 6 are cleaned, and the remaining rainwater passes through the fan blades 404 below. The fan blades 404 break up the rainwater and discharge part of the rainwater through the second air grooves 103 through the airflow. At this time, the moisture will further clean the attached impurities, and the remaining rainwater will pass through the first air grooves 102 below and be discharged from the display screen 1, so that the heat inside the display screen 1 can be quickly discharged, the heat dissipation effect of the display screen 1 is improved, and the internal temperature of the display screen 1 is avoided from being too high during the sealing process.

[0052] Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A dustproof and moisture-proof LED module display screen for outdoor use, comprising a plurality of display screens (1) and a plurality of fixing frames (2), wherein the plurality of display screens (1) are spliced ​​together, and a protective box (101) is provided on the back of each display screen (1), and each fixing frame (2) crosses the back of the display screen (1) and is located above the protective box (101), and the display screen (1) is fixed on the side of the fixing frame (2), characterized in that: The display screen (1) is provided with a circuit controller (104) and a power connection board (105) inside the protection box (101), and multiple sets of sealing plates (4) are provided inside the protection box (101) outside the circuit controller (104) and the power connection board (105), and each set of sealing plates (4) is bonded to the circuit controller (104) and the power connection board (105), and movable heat sinks (3) are provided on both sides of the sealing plates (4) of the protection box (101), and the movable heat sinks (3) are connected to the protection box (101) through a transmission mechanism. The sealing plate (4) is movably connected, with heat-conducting strips (401) connected to both sides, with fan blades (404) installed at the top and bottom of the sealing plate (4), a first air groove (102) is provided at a relative position between the protection box (101) and the fan blades (404), a heat dissipation plate (402) is provided at a side of the sealing plate (4) between the two groups of fan blades (404), a second air groove (103) is provided at a relative position between the protection box (101) and the heat dissipation plate (402), and the movable heat sink (3) and the sealing plate (4) can be sealed and engaged; A driving motor (5) is installed on the side of each group of movable heat sinks (3) inside the protection box (101), and two groups of output ends of the driving motor (5) are connected to a driving shaft (501). A limited rotation shaft (502) is provided inside the protection box (101), and two groups of transmission belts (503) are sleeved on the outside of the driving shaft (501) and the limited rotation shaft (502). The two groups of transmission belts (503) are symmetrically arranged relative to the driving motor (5); Each group of movable heat sinks (3) located on the inner side of the protection box (101) is provided with a protruding plate (301), and the sealing plate (4) located on both sides of the heat sink (402) is provided with sealing strips matching the protruding plate (301), and the outer side of the protruding plate (301) is provided with two groups of connecting joints (302) matching the driving belt (503), and the protruding plate (301) is fixedly connected to the driving motor (5) via the connecting joints (302), and the driving motor (5) drives the movable heat sink (3) to slide inside and outside the protection box (101) via the driving belt (503); A mounting frame (504) is provided on the outside of each set of drive motors (5); the drive motors (5) are fixedly connected to the inner wall of the protection box (101) via the mounting frame (504); a fine-tuning cylinder (505) is installed below the mounting frame (504); an output end of the fine-tuning cylinder (505) extends to the bottom of the drive motor (5) and is connected to a limit plate (506); the limit plate (506) is engaged and connected to the bottom of the protruding plate (301).

2. The dust-proof and moisture-proof LED module display screen for outdoor use according to claim 1, characterized in that: The fixing frame (2) is provided with a support frame (201) on the back of each set of display screens (1); the support frame (201) is fitted to the back of the display screens (1), and the support frame (201) is fixedly connected to the protection box (101) of the display screens (1) by bolts.

3. The dust-proof and moisture-proof LED module display screen for outdoor use according to claim 1, characterized in that: The sealing plate (4) is provided with a first filter screen (403) between each group of first filter screens (403) and the first air groove (102); the first filter screen (403) is fitted with the first air groove (102); a second filter screen (6) is installed on the outer side of the second air groove (103); and the second filter screen (6) is fixedly connected to the protection box (101) by bolts.

4. The dust-proof and moisture-proof LED module display screen for outdoor use according to claim 1, characterized in that: Two groups of heat-conducting strips (401) located at the ends of the limiting rotating shafts (502) are provided with connecting shaft seats on their sides, and the limiting rotating shafts (502) are movably connected to the heat-conducting strips (401) via the connecting shaft seats. The inner wall of the protection box (101) is also provided with connecting shaft seats matching the driving shaft (501), and the driving shaft (501) is movably connected to the protection box (101) via the connecting shaft seats.

5. The dust-proof and moisture-proof LED module display screen for outdoor use according to claim 1, characterized in that: The heat dissipation plates (402) are vertical plate-shaped structures, and each group of heat dissipation plates (402) is arranged in parallel with the movable heat sink (3), and adjacent heat dissipation plates (402) directly form a flow groove, which is connected to the adjacent first filter screen (403).

6. The dust-proof and moisture-proof LED module display screen for outdoor use according to claim 1, characterized in that: The heat dissipation plates (402) are horizontal plate-shaped structures, and each group of heat dissipation plates (402) is arranged vertically with respect to the movable heat sink (3). Water absorbent cotton (405) is provided on both sides of each group of heat dissipation plates (402), and a humidity sensor is installed inside the water absorbent cotton (405).

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