LED intelligent advertising board capable of being folded and dynamically displayed

Abstract

The invention relates to the technical field of advertising boards, in particular to a foldable dynamic display LED intelligent advertising board which comprises a lamp board base, an advertising board set, a power system and a hinge assembly, the advertising board set comprises a first lamp board, a second lamp board, a third lamp board and a fourth lamp board, the first lamp board is installed on the lamp board base, the power system is installed on the first lamp board, and the hinge assembly is installed on the second lamp board. The back of the first lamp board is connected with the back of the second lamp board through a hinge assembly, the back of the second lamp board is connected with the back of the third lamp board through a hinge, and the back of the third lamp board is connected with the back of the fourth lamp board through a hinge assembly. According to the multi-face folding LED advertising board, the advertising board sets are connected through the hinge assemblies, a worker rotates the lamp board to enable the hinge assemblies to move, multi-face folding of the advertising board is completed, disassembly, assembly, folding and transportation of the LED advertising board are facilitated, the LED lamp bead faces can be effectively protected after folding is completed, and the LED lamp bead faces are prevented from being collided and damaged in the stacking and transportation process of the LED advertising board.

Description

A foldable, dynamically displayed LED smart billboard Technical Field

[0001] This invention relates to the field of billboard technology, specifically to a foldable, dynamically displayed LED smart billboard. Background Technology

[0002] LED billboards, also known as LED displays or LED screens, are flat-panel display devices that use light-emitting diodes (LEDs) as pixel light sources. They present various dynamic or static visual content such as text, images, animations, and videos by controlling the on / off state and color changes of thousands or even millions of individual LED beads. They are an indispensable tool in the fields of modern advertising media, information dissemination, and visual display. However, when used in temporary event scenarios, most existing LED screens on billboards are monolithic, requiring multiple people to move them during setup, resulting in high labor costs and the need for multiple people to cooperate to avoid collisions.

[0003] To avoid the inconvenience of disassembling and assembling billboards during temporary setup, which affects installation and use, and the inconvenience of folding billboards affecting transportation, utility model patent application number CN202220999812.1 provides a foldable billboard that is easy to transport. This invention sets up two mounting frames that are rotatably connected to each other. The mounting frames also include connecting frames, which are provided in two symmetrical arrangements and fixed to one side wall of one mounting frame. A limiting rod is slidably connected to one side wall of the other mounting frame. By ensuring that the display panel is in full contact with the mounting groove, the elasticity of the spring causes the inclined block to automatically spring back and reset, so that the inclined block engages with the limiting groove. This allows for quick and convenient disassembly and assembly of the display panel. It not only makes it easy to replace different display panels for advertising work, but also broadens the scope of application and improves the convenience of transporting the device, making the transportation work more convenient and time-saving. However, the setting of two mounting frames cannot adjust the size of the billboard area according to the content to be displayed, which limits the display screen.

[0004] Therefore, to avoid the inconvenience of disassembling, folding and transporting LED billboards, and to prevent limitations in the content display of billboards, a foldable dynamic display LED smart billboard is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a foldable, dynamically displaying LED smart billboard. To avoid the inconvenience of disassembling, folding, and transporting LED billboards, and to prevent limitations in the content display, the LED billboard is designed as a multi-faceted foldable type, with hinge components connecting multiple light segments. This facilitates the rapid folding and assembly of the LED billboard, as well as its stacking and storage, while also allowing for adjustment of the display area.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A foldable, dynamically displaying LED smart billboard includes a light board base, a billboard assembly, a power system, and a hinge assembly. The billboard assembly includes light board one, light board two, light board three, and light board four. Light board one is mounted on the light board base, and the power system is mounted on light board one. The back of light board one is connected to the back of light board two via a hinge assembly, the back of light board two is connected to the back of light board three via a hinge, and the back of light board three is connected to the back of light board four via a hinge assembly. When the billboard assembly is folded, the LED light surfaces of light board one and light board two are opposite each other, and the LED light surfaces of light board three and light board four are opposite each other.

[0008] The light board base and the billboard assembly constitute an LED billboard. When displaying content, the billboard assembly is perpendicular to the light board base. The billboard assembly contains LED chips, integrated circuits, and printed circuit boards. When powered on, they emit light, forming the basic pixel units of images and videos. The power system converts external AC power into stable DC power required by the LED chips and control system, and simultaneously distributes power to each light board. A protective cover, typically made of perforated metal or plastic, covers the LED chips to protect them from physical impacts without affecting the display effect. A hinge assembly allows two light boards to fold in different directions, thus enabling the billboard assembly to... The LED billboards can be folded into one, two, or three sections, adjusting the size of the billboard assembly according to the content to be displayed. Multiple LED billboards can also be spliced ​​together to display a larger image. When the LED billboards need to be folded and stored, the staff rotates the billboards to move the hinge components, completing the multi-faceted folding of the billboards. This facilitates the disassembly, assembly, folding, and transportation of the LED billboards. After folding, the LED light surfaces of billboard one and billboard two are aligned, and the LED light surfaces of billboard three and billboard four are aligned. The backs of billboard two and billboard three are attached to each other, effectively protecting the LED light beads and preventing damage to the LED light beads during stacking and transportation.

[0009] Preferably, the hinge assembly includes a hinge plate, a hinge rod, and a hinge spring. Both light sign one and light sign three are provided with hinge slots. The hinge plate is configured in an "L" shape, and the end of the hinge plate is slidably installed in the hinge slot. Both light sign two and light sign four are fixedly installed with hinge rods at their ends. The end of the hinge rod protrudes from one side of light sign two and light sign four, and the end of the hinge rod is rotatably connected to the end of the hinge plate. One end of the hinge spring is fixedly installed in the hinge slot, and the other end is fixedly connected to the hinge plate.

[0010] By installing a hinge assembly on the billboard assembly, when light board three and light board four need to be folded together, first pull light board four upwards to separate the end faces of light board three and light board four from each other. At this time, the hinge spring is stretched and elongated, and the hinge plate moves within the hinge groove. One end of the "L"-shaped hinge plate moves to one end of light board four. Then, light board four is rotated, and the end of the hinge rod rotates relative to the hinge plate. Rotation until the LED light surfaces of light board four and light board three are in contact completes the folding of one side. The folding method of light board one and light board two is the same, while light board two and light board three can be folded by simply rotating relative to each other. The hinge assembly ensures that the hinge points of the billboard assembly are all located on the back of the light boards, which not only ensures that there are no gaps between the light boards when the billboard assembly is unfolded, but also facilitates the stacking and storage of multiple LED light boards.

[0011] Preferably, a sliding guide rail is fixedly installed on the light sign base, and a sliding rod is provided at the bottom of the light sign. The sliding rod is slidably engaged with the sliding guide rail. One end of the sliding guide rail is located in the middle of the light sign base. A support spring is fixedly installed on the light sign base, and a driving block is fixedly installed at the end of the support spring. A trapezoidal block is slidably installed on the light sign base. The trapezoidal block is located between the driving block and the sliding rod, and the inclined surface of the trapezoidal block faces the driving block. The trapezoidal block is slidably engaged with the driving block. An inclined slope is provided on the light sign base, and the inclined slope is located on one side of the bottom of the light sign.

[0012] By installing a sliding guide rail on the light board base, the near end of the guide rail is located in the middle of the light board base, and the far end is located at the end of the light board base. The horizontal height of the far end is higher than that of the near end. When the LED billboard displays content, the billboard assembly is located near the sliding guide rail and perpendicular to the light board base. Under the thrust of the support spring, the drive block is located above the trapezoidal block. When the LED billboard needs to be folded, the worker applies pressure to the drive block, either by stepping on it or by pressing it with their hand. The support spring is compressed, and the drive block moves vertically. The drive block slides relative to the trapezoidal block. Due to the limiting effect of the inclined surface of the trapezoidal block, the trapezoidal block will move horizontally. As the light sign moves, the sliding rod moves within the sliding guide rail, causing the bottom of the light sign to slide relative to the inclined slope. Simultaneously, the light sign rotates during this movement. When folding the billboard assembly, the light sign moves from the near end to the far end of the sliding guide rail, with its end face parallel to the base. The horizontal position of the sliding rod increases, preventing the power system on the back of the light sign from contacting and pressing against the base. Pushing the light sign while simultaneously rotating it accelerates the folding speed of the billboard assembly, facilitating the disassembly and assembly of the LED billboard. The sliding guide rail positions the billboard assembly in the center of the base, ensuring its centrality during display and preventing tilting or bending.

[0013] Preferably, the sliding rod extends to both sides of the sliding guide rail, and two limiting blocks are symmetrically arranged on the light sign base. The two limiting blocks are elastically slidably installed at the ends of the light sign base. The support spring and the driving block are both located between the two limiting blocks. Each of the two limiting blocks has an inclined surface one, and the driving block has an inclined surface two symmetrically arranged. The inclined surface one and the inclined surface two are slidably engaged. Both ends of the sliding rod have locking grooves. A locking plate is fixedly installed on the side wall of the limiting block. The locking plate is slidably engaged with the locking groove. When the billboard assembly is folded, the back of the light sign one abuts against the end face of the limiting block.

[0014] By symmetrically setting limiting blocks on the base of the LED billboard, when the LED billboard displays content and the first billboard is near the sliding guide rail, the locking plate passes through the end of the sliding rod and is inserted into the locking groove. At this time, the locking plate restricts the rotation of the first billboard. After the staff applies pressure to the driving block, the driving block moves vertically downward, and the second inclined surface slides relative to the first inclined surface. Under the limiting action of the two inclined surfaces, the limiting block is pushed to both sides by the driving block. The movement of the limiting block drives the locking plate to move, and the locking plate leaves the locking groove. The locking plate releases the restriction on the sliding rod. At the same time, the driving block pushes the trapezoidal block to make the first billboard displacement and rotation. After the billboard group is completely folded, the end face of the limiting block provides support for the billboard group. The locking plate limits and fixes the first billboard, improving the stability of the billboard group and preventing the billboard group from tilting when it is blown by the wind or other external forces, which would affect the effect of the billboard display content.

[0015] Preferably, multiple support grooves are symmetrically arranged on the two and three side walls of the light sign. A sliding groove is formed in the support groove. There is an inclined angle between the sliding groove and the support groove. A round rod is slidably installed in the sliding groove. A support buckle is rotatably installed on the round rod. The support buckle is elastically connected to the support groove. The width of the support buckle is equal to the width of the sliding groove. The end of the support buckle is set in an "L" shape. A push block is elastically slidably installed at one end of the sliding groove. One end of the push block extends out of the back of the billboard group, and the other end slides against the end of the support buckle.

[0016] By setting support grooves on the side walls of light boards two and three, when the billboard group is in a vertical state near the sliding guide rail, the support buckle is located in the support groove, which does not affect the splicing display of multiple billboard groups. When the staff folds the billboard group, the back of light board two and the back of light board three are attached to each other. The push block is subjected to pressure and moves in a limited position in the support groove. The end of the push block pushes the support buckle to move in the support groove. The round rod moves along the sliding groove trajectory. The support buckle rotates in a limited position while moving. The end of the "L"-shaped support buckle moves out of the side walls of light boards two and three and abuts against the space between light boards one and two and between light boards three and four, respectively. After the billboard group is folded, the LED light bead surfaces of the billboard group are prevented from touching each other, preventing multiple LED light bead surfaces from being damaged by pressure when the LED billboards are stacked and stored, and further protecting the LED light bead surfaces.

[0017] Preferably, a snap-fit ​​plate is rotatably mounted on the sliding guide rail, the end of the snap-fit ​​plate is trapezoidal, a snap-fit ​​groove is opened at the bottom of the light sign, the shape of the snap-fit ​​groove is the same as the shape of the end of the snap-fit ​​plate, the snap-fit ​​plate and the snap-fit ​​groove are slidably engaged, a torsion spring is fixedly mounted on the sliding guide rail, one end of the torsion spring abuts against the snap-fit ​​plate, and an extension plate is fixedly mounted on the drive block, one end of the snap-fit ​​plate is located at the bottom of the extension plate.

[0018] By installing a snap-fit ​​plate on the sliding guide rail, when the LED billboard displays content, the end of the snap-fit ​​plate is inserted into the snap-fit ​​groove, and under the pressure of the torsion spring, the snap-fit ​​plate is tightly attached to the bottom of the light board. At this time, the snap-fit ​​plate restricts the horizontal movement of the light board. When the staff applies pressure to the drive block, the drive block moves vertically downward, the extension plate presses the end of the snap-fit ​​plate, and the snap-fit ​​plate rotates to a limit, releasing the fixation restriction on the light board and allowing the light board to move and rotate. The cooperation between the snap-fit ​​plate and the snap-fit ​​groove prevents the gap between the snap-fit ​​plate and the snap-fit ​​groove from affecting the stability of the billboard assembly, and further avoids the billboard assembly from shaking due to external forces or wind.

[0019] Preferably, rectangular blocks are symmetrically installed at both ends of the hinge rod, the rectangular blocks are located on both sides of the hinge plate, and a rectangular groove is provided on the hinge groove. The rectangular groove has the same shape as the rectangular block, and the rectangular block and the rectangular groove are slidably engaged.

[0020] By setting rectangular blocks at both ends of the hinge rod, when the billboard assembly needs to be folded, lifting light board four and light board two moves the hinge plate and disengages the rectangular blocks from the rectangular slots, thus folding the billboard assembly. When the billboard assembly needs to be unfolded, flipping light board two and light board four allows the rectangular blocks to be inserted into the rectangular slots, ensuring that the end faces of the billboard assembly are flush and that the light boards fit together without gaps. This facilitates the hinged fixing of the billboard assembly while ensuring the display effect of the LED billboard.

[0021] Preferably, a wall-mounted plate is fixedly installed in the hinge groove. The wall-mounted plate is made of rubber material, and its width is 2-3 mm less than the width of the hinge plate. The wall-mounted plate is attached to the side wall of the hinge plate.

[0022] By installing a wall-mounted panel inside the hinge slot, since the width of the hinge panel is 3mm wider than the width of the wall-mounted panel, and the hinge panel is inside the wall-mounted panel, the rubber material can increase the friction between the wall-mounted panel and the hinge panel. This prevents the billboard assembly from suddenly losing external force and falling during the extension process due to operator error when the billboard assembly is folded or unfolded, avoids collisions between the billboards, and protects the billboards.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] 1. By setting up hinge components to connect the billboard group, the staff can rotate the billboard to move the hinge components, completing the multi-faceted folding of the billboard. This facilitates the disassembly, assembly, folding and transportation of the LED billboard. After folding, the LED lamp beads can be effectively protected to prevent the LED lamp beads from being bumped and damaged during the stacking and transportation of the LED billboard.

[0025] 2. By setting the connection method of the hinge plate and the hinge rod, the hinge assembly ensures that the hinge points of the billboard group are all located on the back of the light board. This ensures that there are no gaps between the light boards when the billboard group is unfolded, while also facilitating the stacking and storage of multiple LED light boards.

[0026] 3. By connecting the billboard assembly to the sliding guide rail, when the billboard assembly is folded, the light board one moves from the near end of the sliding guide rail to the far end of the sliding guide rail. The end face of the light board one is parallel to the light board base, and the horizontal position of the sliding rod becomes higher, preventing the power system on the back of the light board one from contacting and squeezing the light board base. While pushing the light board one, the light board one is rotated. The sliding guide rail keeps the billboard assembly in the middle of the light board base, ensuring the centering of the billboard assembly when it is displayed and preventing the billboard assembly from tilting or bending. Attached Figure Description

[0027] Figure 1 is a schematic diagram of the external structure of the present invention;

[0028] Figure 2 is a schematic diagram of the splicing of multiple billboard groups according to the present invention;

[0029] Figure 3 is a schematic diagram of the back structure of the present invention;

[0030] Figure 4 is a schematic diagram of the light sign base structure of the present invention;

[0031] Figure 5 is a schematic diagram of the movement of the limiting block according to the present invention;

[0032] Figure 6 is a schematic diagram of the billboard assembly folding process of the present invention;

[0033] Figure 7 is a schematic diagram of the billboard assembly of the present invention after folding;

[0034] Figure 8 is a schematic diagram of the support buckle structure of the present invention.

[0035] In the diagram: 1. Sign base; 101. Support spring; 102. Drive block; 103. Trapezoidal block; 104. Inclined ramp; 105. Extension plate; 2. Billboard assembly; 21. Sign 1; 211. Hinge groove; 212. Sliding rod; 213. Locking groove; 214. Locking groove; 22. Sign 2; 23. Sign 3; 24. Sign 4; 3. Power system; 4. Hinge assembly; 41. Hinge plate; 42. Hinge rod; 43. Hinge spring; 44. Rectangular block; 45. Rectangular groove; 5. Sliding guide rail; 51. Locking plate; 52. Torsion spring; 6. Limiting block; 61. Inclined surface 1; 62. Inclined surface 2; 63. Locking plate; 7. Support groove; 71. Sliding groove; 72. Round rod; 73. Support buckle; 74. Push block; 8. Wall panel. Detailed Implementation

[0036] Please refer to Figures 1 to 8. This invention provides a foldable, dynamically displayed LED smart billboard, the technical solution of which is as follows:

[0037] A foldable, dynamically displaying LED smart billboard includes a light board base 1, a billboard assembly 2, a power system 3, and a hinge assembly 4. The billboard assembly 2 includes light board one 21, light board two 22, light board three 23, and light board four 24. Light board one 21 is mounted on the light board base 1, and the power system 3 is mounted on light board one 21. The back of light board one 21 is connected to the back of light board two 22 via the hinge assembly 4. The back of light board two 22 is connected to the back of light board three 23 via a hinge, and the back of light board three 23 is connected to the back of light board four 24 via a hinge assembly 4. When the billboard assembly 2 is folded, the LED light surfaces of light board 1 21 and light board 22 are aligned, and the LED light surfaces of light board 3 23 and light board 4 24 are aligned. The base 1 and the billboard assembly 2 together form an LED billboard. When the billboard displays content, the billboard assembly 2 is perpendicular to the base 1. The billboard assembly 2 contains LED beads, integrated circuits, and printed circuit boards. It emits light when powered on, forming the basic pixel units of images and videos. The power supply system 3 converts the externally input AC power into LED beads and controls... The system requires a stable DC power supply, which is then distributed to each sign. A protective cover, typically made of perforated metal or plastic, covers the LED beads on each sign to protect them from physical impacts without affecting the display. A hinge assembly allows two signs to fold in different directions, so the billboard group 2 can be folded into one, two, or three sections, adjusting its size according to the content being displayed. Multiple LED billboards can be joined together to display a larger image. When the LED billboard needs to be folded for storage, the operator rotates the sign to move the hinge assembly 4, completing the multi-faceted folding of the billboard. This facilitates the disassembly, folding, and transportation of the LED billboard. After folding, the LED surfaces of sign 1 (21) and sign 2 (22) are aligned, as are the LED surfaces of sign 3 (23) and sign 4 (24). The backs of sign 2 (22) and sign 3 (23) are flush, effectively protecting the LED beads and preventing damage during stacking and transportation.The hinge assembly 4 includes a hinge plate 41, a hinge rod 42, and a hinge spring 43. Both light sign 1 21 and light sign 3 23 have hinge slots 211. The hinge plate 41 is L-shaped, with its end slidably mounted within the hinge slot 211. Both light sign 22 and light sign 44 have hinge rods 42 fixedly mounted at their ends, with the ends of the rods protruding from one side of each sign. The ends of the rods 42 are rotatably connected to the ends of the hinge plate 41. One end of the hinge spring 43 is fixedly mounted within the hinge slot 211, and the other end is fixedly connected to the hinge plate 41. When light sign 3 23 and light sign 4 24 need to be folded together, light sign 4 24 is first pulled upwards, causing the end faces of light sign 3 23 and light sign 4 24 to fold together. When the joint is disengaged, the hinge spring 43 is stretched and elongated, and the hinge plate 41 moves within the hinge groove 211. One end of the "L"-shaped hinge plate 41 moves to one end of the light sign 24. Then, the light sign 24 is rotated, and the end of the hinge rod 42 rotates relative to the hinge plate 41. The rotation continues until the LED light surface of the light sign 24 and the light sign 3 23 are in contact, thus completing the folding of one side. The folding method of the light sign 1 21 and the light sign 2 22 is the same, while the light sign 2 22 and the light sign 3 23 can be folded by simply rotating relative to each other. The hinge assembly 4 ensures that the hinge points of the billboard group 2 are all located on the back of the light sign, which ensures that there are no gaps between the light signs when the billboard group 2 is unfolded, and facilitates the stacking and storage of multiple LED light signs.A sliding guide rail 5 is fixedly installed on the light sign base 1. A sliding rod 212 is provided at the bottom of the light sign 21, and the sliding rod 212 slides in cooperation with the sliding guide rail 5. One end of the sliding guide rail 5 is located in the middle of the light sign base 1. A support spring 101 is fixedly installed on the light sign base 1, and a drive block 102 is fixedly installed at the end of the support spring 101. A trapezoidal block 103 is slidably installed on the light sign base 1, located between the drive block 102 and the sliding rod 212, with the inclined surface of the trapezoidal block 103 facing the drive block 102. The trapezoidal block 103 and the drive block 102... The LED billboard base 1 has a sliding fit and an inclined ramp 104 located on one side of the bottom of the billboard 21. The near end of the sliding guide rail 5 is located in the middle of the billboard base 1, and the far end is located at the end of the billboard base 1. The horizontal height of the far end is higher than that of the near end. When the LED billboard displays content, the billboard group 2 is located near the sliding guide rail 5 and perpendicular to the billboard base 1. Under the thrust of the support spring 101, the drive block 102 is located above the trapezoidal block 103. When the LED billboard needs to be folded, the operator moves the drive block 102. 2. Applying pressure, either by stepping or pressing with your hand, compresses the support spring 101, causing the drive block 102 to move vertically. The drive block 102 slides relative to the trapezoidal block 103. Due to the limiting effect of the inclined surface of the trapezoidal block 103, the trapezoidal block 103 moves horizontally. The movement of the trapezoidal block 103 pushes the light sign 21 to move. The sliding rod 212 moves within the sliding guide rail 5. The bottom of the light sign 21 slides relative to the inclined slope 104. The light sign 21 rotates simultaneously during its movement. The staff folds the advertising board assembly 2. When light board 21 moves from the near end to the far end of sliding guide rail 5, the end face of light board 21 becomes parallel to the light board base 1, and the horizontal position of sliding rod 212 increases, preventing the power system 3 on the back of light board 21 from contacting and pressing against the light board base 1. Pushing light board 21 while rotating it accelerates the folding speed of the billboard assembly 2, facilitating the disassembly and assembly of the LED billboard by staff. Sliding guide rail 5 positions the billboard assembly 2 in the middle of the light board base 1, ensuring the centrality of the billboard assembly 2 during display and preventing tilting or bending.

[0038] As one embodiment of the present invention, referring to Figures 3 to 8, the sliding rod 212 extends from both ends of the sliding guide rail 5. Two limiting blocks 6 are symmetrically arranged on the light sign base 1. The two limiting blocks 6 are elastically slidably installed at the ends of the light sign base 1. The support spring 101 and the drive block 102 are both located between the two limiting blocks 6. Each of the two limiting blocks 6 has an inclined surface 61. The drive block 102 has an inclined surface 62 symmetrically arranged. The inclined surface 61 and the inclined surface 62 are slidably engaged. Both ends of the sliding rod 212 have locking grooves 213. A locking plate 63 is fixedly installed on the side wall of the limiting block 6. The locking plate 63 is slidably engaged with the locking groove 213. When the billboard group 2 is folded, the back of the light sign 21 abuts against the end face of the limiting block 6. When the LED billboard displays content and the light sign 21 is located near the end of the sliding guide rail 5, the locking plate 63 passes through the sliding rod 212. The end is inserted into the locking groove 213. At this time, the locking plate 63 restricts the rotation of the light sign 21. After the staff applies pressure to the drive block 102, the drive block 102 moves vertically downward. The second inclined surface 62 slides relative to the first inclined surface 61. Under the limiting action of the two inclined surfaces, the limiting block 6 is pushed to both sides by the drive block 102. The movement of the limiting block 6 drives the locking plate 63 to move. The locking plate 63 leaves the locking groove 213 and releases the restriction on the sliding rod 212. At the same time, the drive block 102 pushes the trapezoidal block 103 to make the light sign 21 shift and rotate. After the billboard group 2 is completely folded, the end face of the limiting block 6 provides support for the billboard group 2. The locking plate 63 limits and fixes the light sign 21, improving the stability of the billboard group 2 and preventing the billboard group 2 from tilting when it is blown by the wind or other external forces, which would affect the display effect of the billboard content.Multiple support grooves 7 are symmetrically arranged on the side walls of light sign 22 and light sign 3 23. A sliding groove 71 is formed within each support groove 7, and there is an inclined angle between the sliding groove 71 and the support groove 7. A round rod 72 is slidably installed within the sliding groove 71, and a support buckle 73 is rotatably installed on the round rod 72. The support buckle 73 is elastically connected to the support groove 7, and the width of the support buckle 73 is equal to the width of the sliding groove 71. The end of the support buckle 73 is shaped like an "L". A push block 74 is elastically slidably installed at one end of the sliding groove 71. One end of the push block 74 extends out of the back of the billboard assembly 2, and the other end slides against the end of the support buckle 73. When the billboard assembly 2 is in a vertical position near the sliding guide rail 5, the support buckle 73... Within the support groove 7, the splicing and display of multiple billboard groups 2 are not affected. When the staff folds the billboard group 2, the back of light board 22 fits against the back of light board 33. The push block 74 moves within the support groove 7 under pressure, and the end of the push block 74 pushes the support buckle 73 to move within the support groove 7. The round rod 72 moves along the trajectory of the sliding groove 71. The support buckle 73 rotates while moving, and the end of the "L"-shaped support buckle 73 moves out of the side wall of light board 22 and light board 33, and abuts against the space between light board 1 21 and light board 22 and between light board 3 23 and light board 4 24, respectively. After the billboard group 2 is folded, the "L" shape of the billboard group 2 is prevented from being folded. The LED beads are in close contact to prevent damage to multiple LED bead surfaces due to pressure when the LED billboards are stacked, further protecting the LED bead surfaces. A snap-fit ​​plate 51 is rotatably mounted on the sliding guide rail 5. The end of the snap-fit ​​plate 51 is trapezoidal, and a snap-fit ​​groove 214 is opened at the bottom of the light board 21. The shape of the snap-fit ​​groove 214 is the same as the shape of the end of the snap-fit ​​plate 51. The snap-fit ​​plate 51 and the snap-fit ​​groove 214 are slidably engaged. A torsion spring 52 is fixedly mounted on the sliding guide rail 5. One end of the torsion spring 52 abuts against the snap-fit ​​plate 51. An extension plate 105 is fixedly mounted on the drive block 102. One end of the snap-fit ​​plate 51 is located at the bottom of the extension plate 105. When the LED billboard displays content, the snap-fit ​​plate 51... The end of 1 is inserted into the snap-fit ​​groove 214, and under the pressure of the torsion spring 52, the snap-fit ​​plate 51 is tightly attached to the bottom of the light sign 21. At this time, the snap-fit ​​plate 51 restricts the horizontal movement of the light sign 21. When the staff applies pressure to the drive block 102, the drive block 102 moves vertically downward, the extension plate 105 presses the end of the snap-fit ​​plate 51, the snap-fit ​​plate 51 rotates to a limit, releases the fixed restriction on the light sign 21, and allows the light sign 21 to move and rotate. The cooperation between the snap-fit ​​plate 51 and the snap-fit ​​groove 214 prevents the clamping plate 63 and the clamping groove 213 from having a gap that affects the stability of the billboard group 2, and further avoids the billboard group 2 from shaking due to external force or wind.Rectangular blocks 44 are symmetrically installed at both ends of the hinge rod 42. The rectangular blocks 44 are located on both sides of the hinge plate 41. A rectangular groove 45 is provided on the hinge groove 211. The rectangular groove 45 has the same shape as the rectangular block 44. The rectangular block 44 and the rectangular groove 45 are slidably engaged. When the billboard assembly 2 needs to be folded, lift the light sign 24 and the light sign 22 to move the hinge plate 41 and disengage the rectangular block 44 from the rectangular groove 45 to fold the billboard assembly 2. When the billboard assembly 2 needs to be unfolded, flip the light sign 22 and the light sign 24 so that the rectangular block 44 is inserted into the rectangular groove 45. This makes the end faces of the billboard assembly 2 flush and the light signs fit together without gaps, which facilitates the hinged fastening of the billboard assembly 2. While ensuring the display effect of the LED billboard, a wall-mounted plate 8 is fixedly installed inside the hinge slot 211. The wall-mounted plate 8 is made of rubber material, and its width is 2-3mm less than the width of the hinge plate 41. The wall-mounted plate 8 is attached to the side wall of the hinge plate 41. Since the width of the hinge plate 41 is 3mm greater than the width of the wall-mounted plate 8, and the hinge plate 41 is located inside the wall-mounted plate 8, the rubber material can increase the friction between the wall-mounted plate 8 and the hinge plate 41. This prevents the billboard assembly 2 from suddenly losing external force and falling during the extension process due to operator error when folding or unfolding the billboard assembly 2, avoids collisions between the billboards, and protects the billboards.

[0039] Working principle: When the LED billboard needs to be folded, pressure is applied to the drive block 102, and the support spring 101 is compressed. The drive block 102 moves vertically, and the second inclined surface 62 slides relative to the first inclined surface 61. Under the limiting action of the two inclined surfaces, the limiting block 6 is pushed to both sides by the drive block 102. The movement of the limiting block 6 causes the locking plate 63 to move, and the locking plate 63 leaves the locking groove 213. The locking plate 63 releases the restriction on the sliding rod 212. At the same time, the extension plate 105 presses the end of the locking plate 51, and the locking plate 51 rotates to limit the movement, releasing the fixing restriction on the first light sign 21, allowing the first light sign 21 to move and rotate. The drive block 102 slides relative to the trapezoidal block 103. Due to the limiting action of the inclined surface of the trapezoidal block 103, the trapezoidal block 103... The LED billboard will move horizontally. The trapezoidal block 103 moves and pushes the light sign 21 to move. The sliding rod 212 moves within the sliding guide rail 5. The bottom of the light sign 21 slides relative to the inclined slope 104. The light sign 21 rotates during the movement. The staff lifts the light sign 44 and the light sign 22 to move the hinge plate 41 and disengage the rectangular block 44 from the rectangular groove 45, thus folding the billboard group 2. When folding the billboard group 2, the light sign 21 moves from the near end of the sliding guide rail 5 to the far end of the sliding guide rail 5. The end face of the light sign 21 is parallel to the light sign base 1. When the back of the light sign 22 and the light sign 323 are in contact, the support buckle 73 extends from the support groove 7 and abuts between the light sign 21 and the light sign 22 and between the light sign 323 and the light sign 44 respectively. The LED billboard is then folded.

[0040] The specific embodiment of the present invention has been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the embodiments described above. For those skilled in the art, various changes, modifications, substitutions, and variations made to these embodiments without departing from the principles and ideas of the present invention should still fall within the protection scope of the present invention.

Claims

1. A foldable, dynamically displayed LED smart billboard, characterized in that, The billboard assembly includes a light board base (1), a billboard group (2), a power system (3), and a hinge assembly (4). The billboard group (2) includes light board one (21), light board two (22), light board three (23), and light board four (24). Light board one (21) is mounted on the light board base (1). The power system (3) is mounted on light board one (21). The back of light board one (21) is connected to the back of light board two (22) through the hinge assembly (4). The back of light board two (22) is connected to the back of light board three (23) through a hinge. The back of light board three (23) is connected to the back of light board four (24) through the hinge assembly (4). When the billboard group (2) is folded, the LED light surfaces of light board one (21) and light board two (22) are opposite each other, and the LED light surfaces of light board three (23) and light board four (24) are opposite each other.

2. The foldable dynamic display LED smart billboard according to claim 1, characterized in that, The hinge assembly (4) includes a hinge plate (41), a hinge rod (42), and a hinge spring (43). Both the first light sign (21) and the third light sign (23) are provided with hinge grooves (211). The hinge plate (41) is set in an "L" shape. The end of the hinge plate (41) is slidably installed in the hinge groove (211). The ends of the second light sign (22) and the fourth light sign (24) are fixedly installed with hinge rods (42). The end of the hinge rods (42) protrudes from one side of the second light sign (22) and the fourth light sign (24). The end of the hinge rods (42) is rotatably connected to the end of the hinge plate (41). One end of the hinge spring (43) is fixedly installed in the hinge groove (211), and the other end is fixedly connected to the hinge plate (41).

3. The foldable dynamic display LED smart billboard according to claim 2, characterized in that, A sliding guide rail (5) is fixedly installed on the light sign base (1). A sliding rod (212) is provided at the bottom of the light sign (21). The sliding rod (212) is slidably engaged with the sliding guide rail (5). One end of the sliding guide rail (5) is located in the middle of the light sign base (1). A support spring (101) is fixedly installed on the light sign base (1). A drive block (102) is fixedly installed at the end of the support spring (101). A trapezoidal block (103) is slidably installed on the light sign base (1). The trapezoidal block (103) is located between the drive block (102) and the sliding rod (212), and the inclined surface of the trapezoidal block (103) faces the drive block (102). The trapezoidal block (103) is slidably engaged with the drive block (102). An inclined slope (104) is provided on the light sign base (1). The inclined slope (104) is located on one side of the bottom of the light sign (21).

4. The foldable dynamic display LED smart billboard according to claim 3, characterized in that, The sliding rod (212) extends to both sides of the sliding guide rail (5). Two limiting blocks (6) are symmetrically arranged on the light sign base (1). The two limiting blocks (6) are elastically slidably installed at the end of the light sign base (1). The support spring (101) and the drive block (102) are both located between the two limiting blocks (6). An inclined surface (61) is provided on each of the two limiting blocks (6). An inclined surface (62) is symmetrically arranged on the drive block (102). The inclined surface (61) and the inclined surface (62) are slidably engaged. A locking groove (213) is provided at both ends of the sliding rod (212). A locking plate (63) is fixedly installed on the side wall of the limiting block (6). The locking plate (63) and the locking groove (213) are slidably engaged. When the billboard group (2) is folded, the back of the light sign (21) abuts against the end face of the limiting block (6).

5. A foldable, dynamically displayed LED smart billboard according to claim 2, characterized in that, Multiple support grooves (7) are symmetrically arranged on the side walls of the second (22) and the third (23) light signs. A sliding groove (71) is provided in the support groove (7). There is an inclined angle between the sliding groove (71) and the support groove (7). A round rod (72) is slidably installed in the sliding groove (71). A support buckle (73) is rotatably installed on the round rod (72). The support buckle (73) is elastically connected to the support groove (7). The width of the support buckle (73) is equal to the width of the sliding groove (71). The end of the support buckle (73) is set in an "L" shape. A push block (74) is elastically slidably installed at one end of the sliding groove (71). One end of the push block (74) extends out of the back of the billboard group (2), and the other end slides against the end of the support buckle (73).

6. A foldable, dynamically displayed LED smart billboard according to claim 4, characterized in that, A snap-fit ​​plate (51) is rotatably mounted on the sliding guide rail (5). The end of the snap-fit ​​plate (51) is trapezoidal. A snap-fit ​​groove (214) is provided at the bottom of the light sign (21). The shape of the snap-fit ​​groove (214) is the same as the shape of the end of the snap-fit ​​plate (51). The snap-fit ​​plate (51) and the snap-fit ​​groove (214) are slidably engaged. A torsion spring (52) is fixedly mounted on the sliding guide rail (5). One end of the torsion spring (52) abuts against the snap-fit ​​plate (51). An extension plate (105) is fixedly mounted on the drive block (102). One end of the snap-fit ​​plate (51) is located at the bottom of the extension plate (105).

7. A foldable, dynamically displayed LED smart billboard according to claim 2, characterized in that, The hinge rod (42) has rectangular blocks (44) symmetrically installed at both ends. The rectangular blocks (44) are located on both sides of the hinge plate (41). The hinge groove (211) has a rectangular groove (45) with the same shape as the rectangular block (44). The rectangular block (44) and the rectangular groove (45) are slidably engaged.

8. A foldable, dynamically displayed LED smart billboard according to claim 7, characterized in that, A wall-mounted plate (8) is fixedly installed in the hinge groove (211). The wall-mounted plate (8) is made of rubber material. The width of the wall-mounted plate (8) is 2-3 mm less than the width of the hinge plate (41). The wall-mounted plate (8) is attached to the side wall of the hinge plate (41).

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