LED digital advertising sign

Abstract

The invention relates to the technical field of display screen advertising boards, in particular to an LED digital advertising sign which comprises a supporting frame, a sliding groove, an installation piece, a fixed plate, a movable plate, a limiting plate and a fixing mechanism, the sliding groove is formed in the side edge of the supporting frame, the installation piece is slidably connected into the sliding groove, the installation piece is installed on the supporting frame, and the fixing mechanism is arranged on the sliding groove. The back face of the fixed plate is installed on the installation part, the movable plate is installed on the upper portion of the fixed plate, the sign body is installed on the front face of the fixed plate, the limiting plate is located at the top of the supporting frame, and the fixing mechanism is installed on the upper portion of the supporting frame. And meanwhile, the advertising sign can be conveniently replaced and maintained, and the installation and replacement efficiency of the advertising sign is improved.

Description

Technical Field

[0001] The invention relates to the technical field of display screen advertising boards, in particular to an LED digital advertising sign. Background Art

[0002] LED digital advertising signs are electronic screens that use light-emitting diode (LED) technology to display advertising information. They create visual content by adjusting the height and color of LED lights. The principle is that when LED lamp beads emit light, different colors and brightness changes are achieved by controlling the current, thereby displaying various information and images. LED digital advertising signs are often used in public places such as shopping malls, airports, stations, city streets, etc. as a tool for advertising, information release and interactive display.

[0003] Advertising signs are hung at higher positions in scenic spots or on highways. The installation and fixation of advertising signs need to ensure the stability, durability and adaptability of the display screen to various environments. Therefore, screws or welding are often used to fix the advertising signs. However, since they are in outdoor spaces, they are easily damaged under the influence of the environment. Once damaged, replacement and repair require a certain period of time, which will take up space and disassembly and assembly time. However, the passenger flow in scenic spots and highways is large, and they cannot be repaired and replaced in time when damaged, which in turn affects the promotion of merchants' activities. In addition, since the installation height of advertising signs is too high, people need to rely on external devices (such as tower cranes, etc.) to reach high places during installation, and it is difficult to ensure the safety of high-altitude operations.

[0004] A variety of solutions have been proposed in the prior art for this type of problem. For example, the multifunctional LED color screen billboard with patent number 201210447159.9 uses a spring to clamp the positioning sleeve so that the positioning sleeve can slide up and down, thereby facilitating the installation, transfer and disassembly of the LED triangle module. Although this method realizes the convenient disassembly and installation of the LED billboard, it cannot solve the problem that the height of the LED billboard is too high, the installation difficulty and risk of high-altitude operations are high, and thus it is difficult to achieve convenient installation, which affects the normal promotion of the billboard when there is a large flow of customers.

[0005] Based on this, in order to solve the problem that the advertising signs are too high and difficult to install and disassemble conveniently to ensure the normal publicity of the advertising signs in scenic spots or highways with large passenger flow, the present invention designs an LED digital advertising sign. Summary of the invention

[0006] The present invention provides an LED digital advertising sign. In order to solve the problem that the advertising sign is too high and difficult to install and disassemble conveniently to ensure the normal publicity of the advertising sign in scenic spots or highways with large passenger flow, the present invention utilizes the lifting and lowering of the advertising sign to guide the installation and disassembly of the advertising sign, thereby reducing the difficulty of high-altitude operations by people, and at the same time makes the advertising sign convenient to replace and repair, thereby improving the efficiency of installation and replacement of the advertising sign.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] The movable plate is hinged on the support frame, and the movable plate is connected with the fixing mechanism through the fixing mechanism, and the fixing mechanism can be connected with the fixing mechanism through the fixing mechanism to prevent the fixing plate from rotating and the fixing mechanism from rotating.

[0009] Preferably, the three endpoints of the transverse cross section of the support frame form an equilateral triangle, and the fixed plate array is arranged in the slide groove of the support frame, and the three sides are supported together to form a more stable effect after the three sides are fully installed.

[0010] Preferably, the mounting member includes a driving member, a positioning tube, a rotating shaft, a magnetic axis a, a magnetic axis b, a top groove, a bottom groove, a magnet c and a magnet d. The driving member is located at the bottom of the support frame, the positioning tube is installed at the bottom of the fixed plate, the rotating shaft is installed between the fixed plate and the movable plate, the magnetic axis a is located in the positioning tube, the magnetic axis b is located in the rotating shaft, the top groove and the bottom groove are both opened in the slide groove, the magnet c is installed in the top groove, and the magnet d is installed in the bottom groove. The magnetic axis a is adsorbed to the magnet d, and the magnetic axis b is adsorbed to the magnet c. The magnetic poles of the magnet c and the magnet d facing the fixed plate are opposite, and the fixed block is locked by the upper and lower magnetic adsorption, thereby achieving the effect of convenient installation.

[0011] Preferably, the rotating shaft is fixedly connected to the movable plate, the magnetic axis b is keyed to the rotating shaft, a wedge block is installed on the end face of the magnetic axis b, the end face of the magnet c corresponding to the magnetic axis b is a wedge-shaped surface, and the magnetic axis b can drive the movable plate to rotate when it rotates, thereby achieving an overall fixing effect through the limit plate and the fixing mechanism.

[0012] Preferably, the fixing mechanism includes a support column and a clamping ring, the support column is installed at the top center position of the support frame, and the clamping ring is installed on the outside of the support column. The cross-sectional shape of the clamping ring is an equilateral triangle. By rotating the movable plate, the limiting plate rotates around the edge of the support frame, thereby improving the installation and fixing effect of the sign body.

[0013] Preferably, the limit plate is rotatably connected to the support frame, and the limit plates are distributed on the left and right sides of the axis of the fixed plate. A card slot is opened on the limit plate. When multiple limit plates are located in the card slot, several limit plates form constraints on each other and pull the clamping ring together. Their common forces offset each other, and the combined force is determined as the center position, thereby improving the fixing effect of the limit plate on the movable plate.

[0014] Preferably, an insulating groove is provided on the support frame, and the insulating groove is located at the magnet c and the magnet d. An insulating block is installed in the insulating groove. By inserting the insulating block, the magnetic axis b can be separated from the magnet c, and the fixed plate can be easily moved downward along the slide groove.

[0015] Preferably, a solar panel is installed on the back of the movable plate, and the solar panel is electrically connected to the sign body. The solar panel can absorb external light and heat through the back and then convert it into electrical energy for use by the sign body, thereby extending the service life of the sign body.

[0016] Preferably, rubber protrusions are installed in the slide groove, and the protrusions are arranged in an intermittent array to prevent the fixing plate from rising too quickly and the limit plate from rigidly contacting the clamping ring, resulting in excessive rigid collision and damage to the clamping ring or the limit plate.

[0017] Preferably, when the limit plate contacts the clamping ring, the inclination angle between the limit plate and the horizontal plane is 60 degrees, the limit plate is a V-shaped structure, and the angle between the two sides of the limit plate is 30 degrees, so that the extension line of the long side of the limit plate is just focused on the center position of the support frame, so that the limit plate can form a constraint for the movable plate.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. The LED digital advertising sign proposed by the present invention has a fixed plate and a movable plate. On the one hand, it is used to guide the moving direction of the fixed plate when it is installed upward to prevent impurities or other objects from affecting the sign body on the fixed plate. On the other hand, after the fixed plate is installed, it can drive the limit plate to rotate, so that the limit plate and the fixing mechanism form a triangular prism shape, and then form a triangular support, which improves the stability of the fixed plate. At the same time, the movable plate also blocks the advertising sign on the fixed plate to prevent direct sunlight from shining on the advertising sign and causing glare to people, affecting the use effect of the advertising sign; while shading, it can absorb direct light from the outside, and then use the solar cell panel to absorb and convert electricity, so as to store electricity for the sign body and extend the service life of the sign body.

[0020] 2. In the LED digital advertising sign proposed by the present invention, during the upward sliding process of the fixed plate, the magnetic axis a gradually moves to the bottom groove, and under the adsorption of the magnet d, the magnetic axis a slides into the bottom groove and then embeds into the bottom groove. At the same time, the magnetic axis b is adsorbed by the magnet c, and the magnetic axis b is embedded in the top groove, and then the fixed block is locked through the upper and lower magnetic adsorption, thereby achieving the effect of convenient installation.

[0021] 3. The LED digital advertising sign proposed by the present invention rotates the movable plate so that the limit plate rotates around the edge of the support frame, thereby allowing the limit plate to reach the position inside the clamping ring. Limited by the clamping ring, the limit plate is folded to a fixed position, and at this time, the magnetic adsorption force between the magnet c and the magnetic axis b is also the largest, thereby improving the installation and fixing effect of the sign body. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation mode of the present invention or the technical solution in the prior art, the drawings required for use in the specific implementation mode or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are one implementation mode of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a structural schematic diagram of the installation process of the present invention;

[0024] Figure 2 It is a cross-sectional view of the radial direction of the rotating shaft and the positioning tube of the present invention;

[0025] Figure 3 yes Figure 2 The enlarged view of point A in the middle;

[0026] Figure 4 It is a cross-sectional view of the axial direction of the rotating shaft and the positioning tube of the present invention;

[0027] Figure 5 yes Figure 4The enlarged view of point B in the middle;

[0028] Figure 6 This is a schematic diagram of the structure of the present invention after installation;

[0029] Figure 7 yes Figure 6 Enlarged view of point C in the middle;

[0030] Figure 8 is a cross-sectional view of the fixing plate after the present invention is installed;

[0031] Fig. 9 It is a detailed view of the rotating shaft of the present invention.

[0032] In the figure: 1. support frame; 11. insulation groove; 12. insulation block; 2. slide groove; 21. protrusion; 3. mounting member; 31. driving member; 32. positioning tube; 33. rotating shaft; 34. magnetic axis a; 35. magnetic axis b; 351. wedge block; 36. top groove; 37. bottom groove; 38. magnet c; 39. magnet d; 4. fixing plate; 41. sign body; 5. movable plate; 51. solar panel; 6. limit plate; 61. slot; 7. fixing mechanism; 71. support column; 72. snap ring. DETAILED DESCRIPTION

[0033] In order to better understand the above solution, the above technical solution is described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0034] like Figure 1 As shown, an LED digital advertising sign provided by the present invention includes a support frame 1, a slide groove 2, a mounting member 3, a fixed plate 4, a movable plate 5, a limit plate 6 and a fixing mechanism 7. The slide groove 2 is opened on the side of the support frame 1, and the slide groove 2 can be adjusted in a variety of ways according to the height of the support frame 1 and the installation height and installation position of the billboard; for a high support frame 1, the mounting member 3 is used to make the billboard gradually move upward along the slide groove 2 until it reaches the top and then is fixed by the mounting member 3, and the fixing mechanism 7 is used to maintain its stability after being fixed; for a low support frame 1, the slide groove 2 can be directly installed, and the advertising sign is manually installed into the slide groove 2, and then it can be installed and fixed by sliding along the slide groove 2.

[0035] The mounting member 3 is slidably connected in the slide groove 2, the mounting member 3 is mounted on the support frame 1, the back of the fixed plate 4 is mounted on the mounting member 3, the movable plate 5 is mounted above the fixed plate 4, and a sign body 41 is mounted on the front of the fixed plate 4. The fixed plate 4 is a supporting structure of the sign body 41. The sign body 41 is an LED digital advertising sign, which can be embedded in the fixed plate 4 or protrude outward (the specific situation is based on the length of the sign body 41). The back of the fixed plate 4 is a power supply and a wire group for powering the sign body 41; the movable plate 5 is hinged, and on the one hand, it is used to guide the movement of the fixed plate 4 when it is installed upward. On the one hand, after the fixing plate 4 is installed, the limiting plate 6 can be driven to rotate, so that the limiting plate 6 and the fixing mechanism 7 form a triangular prism, thereby forming a triangular support, which improves the stability of the fixing plate 4. At the same time, the movable plate 5 also blocks the advertising sign on the fixing plate 4 to prevent direct sunlight from shining on the advertising sign and causing glare to people, affecting the use effect of the advertising sign; while shading, it can absorb direct light from the outside, and then use the solar cell panel to absorb and convert electricity, thereby storing electricity for the sign body 41 and extending the service life of the sign body 41.

[0036] The limit plate 6 is located at the top of the support frame 1, and the fixing mechanism 7 is installed above the support frame 1. When the mounting member 3 moves to the top of the support frame 1, the fixing plate 4 is locked by magnetic adsorption. The mounting member 3 drives the limit plate 6 to rotate, and the fixing mechanism 7 limits the rotation angle of the limit plate 6 and forms a triangular support.

[0037] When the limiting plate 6 and the fixing mechanism 7 form a triangular prism, they extend upward into a triangular pyramid, that is, each face can be formed into a triangle, and the stability of the triangle is better than other structures, thereby improving the stability of the sign body 41 after installation.

[0038] The three endpoints of the transverse cross-section of the support frame 1 form an equilateral triangle, and the fixed plate 4 is arranged in an array in the slide groove 2 of the support frame 1. The three endpoints of the support frame 1 are stabilized by the triangle, so that the center of gravity of the support frame 1 is always located in the middle position. After the three fixed plates 4 are installed to the three sides of the support frame 1, the three sides are supported together to form a more stable effect after the three sides are fully installed, thereby improving the firmness of the sign body 41 after installation.

[0039] like Figure 2-5As shown, the mounting member 3 includes a driving member 31, a positioning tube 32, a rotating shaft 33, a magnetic axis a34, a magnetic axis b35, a top groove 36, a bottom groove 37, a magnet c38 and a magnet d39, the driving member 31 is located at the bottom of the support frame 1, the positioning tube 32 is installed at the bottom of the fixed plate 4, the rotating shaft 33 is installed between the fixed plate 4 and the movable plate 5, the center positions of the positioning tube 32 and the rotating shaft 33 are both solid, the magnetic axis a34 is located in the positioning tube 32, the magnetic axis b35 is located in the rotating shaft 33, the number of magnetic axes a34 in each positioning tube 32 is 2, the number of magnetic axes b35 in each rotating shaft 33 is also 2, and then the magnetic axes a34 and the magnetic axes b35 can both extend outward, in order to realize the function of easy disassembly, reset springs can be installed at the magnetic axes a34 and the magnetic axes b35, so that the magnetic axes a34 and the positioning tube 32 The center positions are connected, so that the magnetic axis b35 is connected to the center position of the rotating shaft 33, the top groove 36 and the bottom groove 37 are both opened in the slide groove 2, the magnet c38 is installed in the top groove 36, and the magnet d39 is installed in the bottom groove 37, the magnetic axis a34 is adsorbed with the magnet d39, the magnetic axis b35 is adsorbed with the magnet c38, and the magnetic poles of the magnet c38 and the magnet d39 facing the fixed plate 4 are opposite; in the process of the fixed plate 4 sliding upward, the magnetic axis a34 gradually moves to the bottom groove 37, and under the adsorption of the magnet d39, the magnetic axis a34 slides into the bottom groove 37 and then embeds into the bottom groove 37. At the same time, the magnetic axis b35 is adsorbed by the magnet c38, and the magnetic axis b35 is embedded in the top groove 36, and then the fixed block is locked by the upper and lower magnetic adsorption, thereby achieving the effect of convenient installation.

[0040] like Fig. 9 As shown, the rotating shaft 33 is fixedly connected to the movable plate 5, the magnetic axis b35 is key-connected to the rotating shaft 33, the end face of the magnetic axis b35 is installed with a wedge block 351, and the end face of the magnet c38 corresponding to the magnetic axis b35 is a wedge-shaped surface; the magnetic axis b35 will drive the rotating shaft 33 to rotate synchronously when rotating, and the rotating shaft 33 is fixedly connected to the movable plate 5, so the magnetic axis b35 can drive the movable plate 5 to rotate when rotating, the end face of the magnetic axis b35 is installed with a wedge block 351, and the corresponding surface of the magnet c38 is a wedge-shaped surface, and then the magnetic axis b35 can be adsorbed with the magnet c38, and the magnetic axis will turn under the action of the magnetic force, thereby driving the rotating shaft 33 and the movable plate 5 to rotate, and then the overall fixing effect is achieved through the limit plate 6 and the fixing mechanism 7.

[0041] like Figure 4As shown, the fixing mechanism 7 includes a support column 71 and a retaining ring 72. The support column 71 is installed at the top center position of the support frame 1, and the retaining ring 72 is installed on the outside of the support column 71. The cross-sectional shape of the retaining ring 72 is an equilateral triangle. By rotating the movable plate 5, the limiting plate 6 rotates around the edge of the support frame 1, and then the limiting plate 6 reaches the position inside the retaining ring 72. Limited by the retaining ring 72, the limiting plate 6 is folded to a fixed position, and at this time, the magnetic adsorption force between the magnet c38 and the magnetic axis b35 is also the largest, thereby improving the installation and fixing effect of the sign body 41.

[0042] like Figure 6-7 As shown, the limit plate 6 is rotatably connected to the support frame 1, and the limit plate 6 is distributed on the left and right sides of the axis of the fixed plate 4. A slot 61 is provided on the limit plate 6; the slot 61 allows the limit plate 6 to be just embedded in the snap ring 72, so that the limit plate 6 can be fixed in the horizontal position with the snap ring 72, and when multiple limit plates 6 are all located in the slot 61, several limit plates 6 form constraints with each other, and jointly pull the snap ring 72, and their common forces offset each other, and the combined force is determined as the center position, thereby improving the fixing effect of the limit plate 6 on the movable plate 5, and thereby improving the stability of the sign body 41.

[0043] like Figure 8 As shown, an insulating groove 11 is opened on the support frame 1, and the insulating groove 11 is located at the magnet c38 and the magnet d39. An insulating block 12 is installed in the insulating groove 11. By inserting the insulating block 12 (the specific insertion method can be pressing by hand or squeezing through other devices, such as a long rod, etc.), the magnetic axis b35 can be separated from the magnet c38, and the magnetic axis a34 can also be separated from the magnet d39. Subsequently, under the action of the driving member 31, the fixed plate 4 can be easily moved downward along the slide groove 2, which is convenient for maintenance and replacement, thereby improving the efficiency of replacement.

[0044] like Figure 6 As shown, a solar panel 51 is installed on the back of the movable plate 5, and the solar panel 51 is electrically connected to the sign body 41. After the movable plate 5 is flipped over by the rotating shaft 33, it can absorb external light and heat through the solar panel 51 on the back, and then convert it into electrical energy for use by the sign body 41, thereby extending the service life of the sign body 41. At the same time, it can switch the power supply, that is, under normal circumstances, it works through the circuit on the back of the fixed plate 4. When the circuit fails, the circuit on the back of the fixed plate 4 is closed through the electrical signal switch, and the battery circuit stored in the solar panel 51 is opened, thereby achieving the effect of emergency power supply.

[0045] like Figure 5As shown, rubber protrusions 21 are installed in the slide groove 2, and the protrusions 21 are arranged in an intermittent array; the rubber protrusions 21 can be used to hinder the fixed plate 4, thereby preventing the fixed plate 4 from rising too fast and the limit plate 6 from rigidly contacting the clamping ring 72, causing excessive rigid collision, thereby causing damage to the clamping ring 72 or the limit plate 6. At the same time, the friction between the fixed plate 4 and the slide groove 2 is also reduced, avoiding the problem of wear of the fixed plate 4 caused by excessive friction. The protrusions 21 can also protect the downward movement of the fixed plate 4, avoiding the problem that the fixed plate 4 moves downward too fast, thereby causing the sign body 41 to fall or cause injuries to the bottom staff.

[0046] like Figure 8 As shown, when the limit plate 6 contacts the retaining ring 72, the inclination angle of the limit plate 6 and the horizontal plane is 60 degrees, the limit plate 6 is a V-shaped structure, the angle between the two sides of the limit plate 6 is 30 degrees, the inclination angle of the limit plate 6 and the horizontal plane is 60 degrees, and the bottom angle of the prism formed by the limit plate 6 and the retaining ring 72 is 60 degrees, which can form stability in three directions, so that the center of gravity is always located at the center position of the support frame 1, and the angle between the two sides of the limit plate 6 is 30 degrees, so that the extension line of the long side of the limit plate 6 is just focused on the center position of the support frame 1, so that the limit plate 6 can form a constraint for the movable plate 5, thereby improving the installation and fixing effect of the fixed plate 4.

[0047] When the sign body 41 needs to be installed, the sign body 41 is first installed on the fixed plate 4, and then the fixed plate 4 and the movable plate 5 are placed on the support frame 1 along the slide groove 2, and the three fixed plates 4 are respectively transported to the top of the support frame 1 through the mounting member 3. When each fixed plate 4 reaches the top of the support frame 1, the position of the movable plate 5 is limited by the limit plate 6 and the fixing mechanism 7, thereby fixing the fixed plate 4;

[0048] Specifically, the fixed plate 4 and the movable plate 5 are moved along the slide groove 2 to the top of the support frame 1 by a driving member 31 (such as a hoist, an electric push rod or a rotating wheel rope mechanism, etc.). In this process, the moving speed of the fixed plate 4 is limited by the protrusion 21, and the friction is reduced at the same time; when the fixed plate 4 moves to the top, the positioning tube 32 reaches the bottom groove 37 position, and the magnetic axis b35 in the positioning tube 32 corresponds to the magnet c38 in the bottom groove 37, and then the magnetic axis b35 is attracted by the magnet c38, thereby limiting the bottom position of the fixed plate 4, and the top rotating shaft 33 reaches the top groove 36 position, and the magnetic axis a34 in the rotating shaft 33 is attracted by the magnet d39 in the top groove 36, and then the magnetic axis a34 enters the top groove 36. Inside, the magnetic axis a34 and the magnetic axis b35 jointly limit the position of the fixed plate 4; the end face of the magnetic axis a34 is installed with a wedge block 351, and the wedge block 351 cooperates with the wedge surface of the magnet d39, and then the wedge block 351 will rotate when it is adsorbed to the magnet d39, and then drive the rotating shaft 33 fixed thereto to rotate, and the rotating shaft 33 drives the movable plate 5 to rotate, and the movable plate 5 will form a fold, squeezing the limiting plate 6, and the limiting plate 6 will fold around the edge of the support frame 1 after being squeezed, and then the clamping groove 61 clamps the clamping ring 72, and at this time the limiting plate 6 and the clamping ring 72 form a triangular prism shape, thereby improving the fixing and stabilizing effect of the movable plate 5; three fixed plates 4 are installed in sequence, thereby forming the installation of three sign bodies 41;

[0049] When replacement or maintenance is required, the insulating block 12 in the insulating groove 11 is squeezed to separate the magnetic axis a34 from the magnet d39, and the magnetic axis b35 from the magnet c38. At this time, the movable plate 5 and the fixed plate 4 are unlocked, and the fixed plate 4 is released and connected to the ground by the pre-installed driving member 31. The limit plate 6 can be reset by structures such as torsion springs.

[0050] The basic principles and beneficial effects of the present invention are shown and described above. At the same time, the present invention is not limited to the above embodiments. Without departing from the effects and scope of the present invention, the present invention may have various changes and improvements. These changes and improvements all fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An LED digital advertising sign, characterized in that: The invention comprises a support frame (1), a slide groove (2), a mounting member (3), a fixed plate (4), a movable plate (5), a limit plate (6) and a fixing mechanism (7), wherein the slide groove (2) is arranged on the side of the support frame (1), the mounting member (3) is slidably connected in the slide groove (2), the mounting member (3) is mounted on the support frame (1), the back of the fixed plate (4) is mounted on the mounting member (3), the movable plate (5) is mounted above the fixed plate (4), a sign body (41) is mounted on the front of the fixed plate (4), the limit plate (6) is located at the top of the support frame (1), the fixing mechanism (7) is mounted above the support frame (1), when the mounting member (3) moves to the top of the support frame (1), the fixed plate (4) is locked by magnetic adsorption, the mounting member (3) drives the limit plate (6) to rotate, and the fixing mechanism (7) limits the rotation angle of the limit plate (6) and forms a triangular support.

2. The LED digital advertising sign according to claim 1, characterized in that: The three endpoints of the transverse cross section of the support frame (1) form an equilateral triangle, and the fixing plates (4) are arranged in an array in the slide groove (2) of the support frame (1).

3. The LED digital advertising sign according to claim 2, characterized in that: The mounting member (3) comprises a driving member (31), a positioning tube (32), a rotating shaft (33), a magnetic axis a (34), a magnetic axis b (35), a top groove (36), a bottom groove (37), a magnet c (38) and a magnet d (39), wherein the driving member (31) is located at the bottom of the support frame (1), the positioning tube (32) is installed at the bottom of the fixed plate (4), the rotating shaft (33) is installed between the fixed plate (4) and the movable plate (5), and the magnetic axis a (34) is located at the bottom of the positioning tube (3 2), the magnetic axis b (35) is located in the rotating shaft (33), the top groove (36) and the bottom groove (37) are both opened in the slide groove (2), the magnet c (38) is installed in the top groove (36), the magnet d (39) is installed in the bottom groove (37), the magnetic axis a (34) and the magnet d (39) are attracted to each other, the magnetic axis b (35) and the magnet c (38) are attracted to each other, and the magnetic poles of the magnet c (38) and the magnet d (39) facing the fixed plate (4) are opposite.

4. The LED digital advertising sign according to claim 3, characterized in that: The rotating shaft (33) is fixedly connected to the movable plate (5), the magnetic axis b (35) is key-connected to the rotating shaft (33), a wedge block (351) is installed on the end surface of the magnetic axis b (35), and the surface of the magnet c (38) corresponding to the magnetic axis b (35) is a wedge surface.

5. The LED digital advertising sign according to claim 3, characterized in that: The fixing mechanism (7) comprises a support column (71) and a clamping ring (72); the support column (71) is mounted at the top center of the support frame (1); the clamping ring (72) is mounted on the outside of the support column (71); and the cross-sectional shape of the clamping ring (72) is an equilateral triangle.

6. The LED digital advertising sign according to claim 3, characterized in that: The limiting plate (6) is rotatably connected to the support frame (1), and the limiting plate (6) is distributed on the left and right sides of the axis of the fixing plate (4). A clamping groove (61) is provided on the limiting plate (6).

7. The LED digital advertising sign according to claim 5, characterized in that: An insulating groove (11) is provided on the support frame (1), the insulating groove (11) is located at the magnet c (38) and the magnet d (39), and an insulating block (12) is installed in the insulating groove (11).

8. The LED digital advertising sign according to claim 4, characterized in that: A solar panel (51) is installed on the back of the movable panel (5), and the solar panel (51) is electrically connected to the sign body (41).

9. The LED digital advertising sign according to claim 2, characterized in that: Rubber protrusions (21) are installed in the slide groove (2), and the protrusions (21) are arranged in an intermittent array.

10. The LED digital advertising sign according to claim 6, characterized in that: When the limiting plate (6) contacts the clamping ring (72), the inclination angle between the limiting plate (6) and the horizontal plane is 60 degrees. The limiting plate (6) is a V-shaped structure, and the angle between the two sides of the limiting plate (6) is 30 degrees.

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