LED display screen

Abstract

The invention relates to the technical field of display screens, in particular to an LED display screen which comprises a main frame, reference frames, a telescopic mechanism and a locking mechanism which are installed in advance, the reference frames are fixedly installed in the extending direction of the main frame, and the multiple reference frames are installed in the extending direction of the main frame and are parallel to one another; a telescopic mechanism for bearing the LED display screen is installed in at least one of the reference frame and the main frame in a sliding mode, the telescopic mechanism can stretch or retract rapidly to enable the LED display screen to be installed or disassembled rapidly, and a locking mechanism is installed at any end of at least one of the main frame and the reference frame in a penetrating and rotating mode. The locking mechanism is used for fixing the telescopic mechanism; through the connection of the long-direction fixing rod and the short-direction fixing rod, the telescopic structure can stretch out and draw back quickly; therefore, the problems that when the LED display modules are installed, the LED display modules need to be manually installed one by one, a large amount of installation time is needed, and the installation efficiency is low are solved.

Description

Technical Field

[0001] This invention relates to the field of display technology, specifically to an LED display screen. Background Technology

[0002] LED displays are flat electronic devices used to display various information such as images, numbers, or text. An LED display is composed of multiple LED display modules. During installation, personnel must be on-site to customize an external support frame that can support the appropriate number of LED display modules based on the user's size requirements. After the external frame is fabricated, the installers need to insert the LED display modules one by one into the support frame. Furthermore, when installing multiple rows of LED display modules, the installers also need to install parallel crossbeams on the back of the LED display modules to secure them. These crossbeams are typically rectangular strips, and magnetic posts are threaded onto the back of the LED display modules to fix them to the crossbeam surface. This means that multiple LED display modules need to be installed individually on-site, requiring a significant amount of on-site installation time.

[0003] When installing a semi-outdoor LED display screen with a single row of LED modules, i.e., an LED display screen located under the eaves, the single row of LED display modules is usually used to display text information, and is typically fixed to the wall with bolts. Specifically, an external frame of appropriate size is assembled first. After the external frame is assembled, the installers manually insert the LED display modules one by one into the external frame. After the external frame is full of LED display modules, the installers finally fix the entire external frame to the wall with bolts. Multiple LED display modules need to be installed manually one by one, which makes the installation of a single row of LED display modules very inefficient.

[0004] When installing LED displays with multiple rows or columns of LED modules for performances or group activities in temporary venues, it is common practice to rent LED displays. However, rented LED displays need to be dismantled again after use, resulting in frequent installation and dismantling. During installation and dismantling, installers still need to manually install or dismantle each LED display module on-site, which leads to a significant amount of on-site installation and dismantling time, resulting in low installation efficiency for LED display modules. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides an LED display screen that solves the issue that existing LED display screens require manual installation of each LED display module during installation and disassembly, resulting in significant on-site installation time and low installation efficiency.

[0006] This invention provides the following technical solution: an LED display screen, comprising a main frame, a telescopic mechanism, and a locking mechanism. The main frame is pre-customized according to the user's requirements for the number or size of LED display modules. A travel groove is formed on the inner wall of the main frame, with one end of the travel groove being open. A telescopic mechanism carrying multiple LED display modules is slidably installed within the travel groove. The telescopic mechanism can quickly extend to allow for rapid installation of the LED display modules, thereby reducing the installation time on-site and improving installation efficiency; or it can quickly retract to allow for rapid disassembly of the LED display modules for later maintenance and repair. The locking mechanism passes through the side wall of the main frame and is rotatably installed onto the inner wall surface of the opposite side. The locking mechanism is perpendicular to the side wall and is used to fix the telescopic mechanism, preventing it from sliding after installation. This prevents unevenness of the multiple LED display modules due to sliding of the telescopic mechanism after installation or during use.

[0007] The main frame has an open structure, and the telescopic structure is installed from the open end of the main frame. The open structure of the main frame makes it easy for installers to install the telescopic structure. A cover plate is installed at the open end of the main frame by a snap-fit ​​mechanism. After the telescopic structure is installed, the installer snaps the cover plate into the open end of the main frame, thereby making the main frame a closed structure and making the main frame structure more stable.

[0008] The telescopic mechanism includes a main moving shaft, a long fixed rod, a short fixed rod, and a side moving shaft. The main moving shaft is located within the travel groove. Long fixed rods are vertically and rotatably mounted on both ends of the main moving shaft. Short fixed rods are rotatably mounted on the middle of each long fixed rod. Multiple long and short fixed rods are alternately connected along the extension direction of the main frame. The other end of each short fixed rod is rotatably mounted to the end of another long fixed rod and is slidably mounted within the travel groove. Side moving shafts are rotatably mounted on the extension ends of multiple long and short fixed rods and are slidably mounted within the travel groove. This forms a telescopic mechanism capable of extending or retracting, and since the connecting ends of the long and short fixed rods are all located within the travel groove, the mechanism is designed to be retractable.

[0009] It should be noted that a magnetic block is fixedly installed on the opposite side of the longitudinal fixing rod, and a matching dissimilar magnetic block is installed on the surface of the LED display module. The LED display module is pre-installed on the opposite side of the longitudinal fixing rod by magnetic adsorption, and the length of the LED display module is the same as the length of the longitudinal fixing rod.

[0010] When the telescopic mechanism extends, the installer inserts the side moving shaft from the end of the side moving shaft to the end of the main moving shaft at the opening of the travel groove, so that the entire telescopic mechanism is installed into the travel groove. Then, the main moving shaft is fixed by the locking mechanism to prevent the telescopic mechanism from not being able to fully extend. After fixing the main moving shaft, the installer pulls the side moving shaft along the extension direction of the travel groove until it is pulled to the limit travel of the telescopic mechanism, that is, the long fixed rod and the short fixed rod are horizontally aligned and both are in contact with the side wall of the main frame located at the travel groove, thereby the telescopic mechanism is in the extended state.

[0011] When the telescopic mechanism reaches its limit stroke and is in the extended state, the long fixed rod and the short fixed rod are horizontally overlapped and both are attached to the side wall of the main frame, thereby driving multiple LED display modules to be horizontally attached, so that the LED display modules are attached to the main frame and combined with each other to form an LED display screen.

[0012] It should be noted that the long and short fixing rods are installed in parallel, ensuring that both the long and short fixing rods fit snugly against the main frame. When installing LED displays of different sizes, multiple telescopic mechanisms of different lengths can be used in conjunction to complete the installation.

[0013] The locking mechanism includes a limiting shaft and a locking shaft. The limiting shaft is used to fix the main moving shaft, and the locking shaft is used to fix the side moving shaft. The limiting shaft and the locking shaft are respectively installed at the stop points at both ends of the travel groove. Either end of the limiting shaft and the locking shaft passes through one side wall of the main frame and is rotatably installed to the inner wall of the opposite surface. A directional lever is fixedly installed on the portion of the limiting shaft and the locking shaft that passes through the side wall of the main frame. The limiting shaft and the locking shaft are rotatably installed on the inner wall of the main frame and are perpendicular to the travel groove.

[0014] The outer circumferential surfaces of the limiting shaft and the locking shaft are fixedly installed with fixing springs by welding. The fixing springs are fan-shaped. When the limiting shaft and the locking shaft rotate, the fixing springs on their surfaces can extend out respectively, so as to fix the main moving shaft and the side moving shaft respectively, thereby ensuring that the telescopic mechanism and multiple LED display modules fit against the side wall of the main frame and remain flat.

[0015] The surface of the fixing spring is provided with a radial notch along the locking shaft or limiting shaft. When the fixing spring extends out of the surface of the locking shaft or limiting shaft, the radial notch can fit the main moving shaft or side moving shaft, so that the main moving shaft or side moving shaft is located in the radial notch, thereby completing the fixing of the main moving shaft and the side moving shaft.

[0016] It should be noted that the radial notches on the surfaces of the fixing springs on the outer circumferences of the locking shaft and the limiting shaft face opposite directions, and their orientation is the same as that of the locking shaft and the limiting shaft.

[0017] When installing the telescopic mechanism and LED display module, the installer first rotates the limiting shaft and extends the fixing spring on its surface. After extending, the spring is attached to the surface of the drive shaft to fix the position of the drive shaft. Then, the installer pulls the side moving shaft so that the long fixing rod and the short fixing rod are horizontally aligned. At this time, the telescopic mechanism is at its limit stroke and is attached to the side wall of the main frame. The installer rotates the locking shaft by rotating the directional lever and extends the fixing spring on its surface. The fixing spring on the surface of the locking shaft rotates and extends to attach to the side moving shaft at the limit stroke, thus fixing the side moving shaft at the limit stroke.

[0018] The opening gap of the radial notch gradually increases along one side surface, with the largest opening gap at the first contact surface between the radial notch and the main moving shaft or side moving shaft. This facilitates the insertion of the main moving shaft or side moving shaft into the radial notch when the user fixes it. When the installer rotates the limiting shaft or locking shaft to extend the fixing spring on its surface, the radial notch on the surface of the fixing spring contacts the main moving shaft or side moving shaft, that is, the part of the radial notch with the largest gap contacts the main moving shaft or side moving shaft first, so that the main moving shaft or side moving shaft can enter the radial notch more stably.

[0019] The sidewalls at the point where the cross-sectional area of ​​the radial notch is smallest, i.e. where the opening gap at the root of the radial notch is smallest, are parallel to each other, and the length of the parallel sidewalls is greater than the diameter of the side moving shaft or the main moving shaft. This allows the main moving shaft or the side moving shaft to be stably fixed when it is located inside the radial notch.

[0020] The longitudinal fixing rod has an L-shaped structure. A magnetic strip is glued to the vertical main frame surface of the L-shaped longitudinal fixing rod. The frame of the LED display module is parallel to the surface of the longitudinal fixing rod and is glued to another matching magnetic strip. The two magnetic strips are attracted to each other by opposite polarities, which can fix the LED display module to the surface of the longitudinal fixing rod.

[0021] Multiple parallel reference frames are fixedly installed within the main frame by bolts. Each reference frame has a travel groove, and telescopic structures are slidably installed within the travel grooves of adjacent reference frames. Multiple reference frames can accommodate multiple telescopic structures and LED display modules, thereby forming an LED display screen.

[0022] The reference frame is a rectangular strip structure. When the telescopic structure is installed on the reference frame, it can also be made to fit against the surface of the reference frame on one side when the longitudinal fixed rod is horizontally aligned. The reference frame has a travel groove on the surface parallel to the main frame. The telescopic structure is slidably installed between adjacent travel grooves. One end of the travel groove is open, and the telescopic structure is installed from the open side.

[0023] When installing the telescopic structure, first install the telescopic structure into the stroke groove of the adjacent reference frame, then move the limit shaft to fix the main moving shaft through the fixing spring and radial notch on its surface; after the main moving shaft is fixed, the installer pulls the side moving shaft and extends it to its limit stroke, then fixes the side moving shaft through the locking shaft and the fixing spring and radial notch on its surface, and finally installs the entire reference frame into the main frame and fixes it with bolts, thus completing the rapid installation of the telescopic structure and multiple LED display modules;

[0024] It should be noted that during installation, multiple reference frames of different lengths can be spliced ​​and fixed together to extend the length of the reference frame and multiple LED display modules;

[0025] The longitudinal fixing rods are connected in an X-shape by rotating at their middle sections. Multiple X-shaped longitudinal fixing rods are connected at their ends by rotation. The opposing longitudinal fixing rods are L-shaped and equipped with magnetic strips to fix the LED display modules. This allows for quick installation of the LED display modules via a telescopic structure. When the installer pulls the side moving shaft, the multiple longitudinal fixing rods extend synchronously, allowing the LED display modules to extend synchronously as well. Especially during post-installation repairs of the LED display modules, after rotating the locking shaft to release the side moving shaft, the installer pulls the side moving shaft to retract the telescopic structure, causing the multiple longitudinal fixing rods to rotate synchronously. This allows the LED display modules to rotate synchronously with the longitudinal fixing rods, resulting in a synchronized tilting state for easy removal and repair by the installer.

[0026] The beneficial effects that this invention can achieve through the above technical solutions are as follows:

[0027] 1. This invention, through the design of a telescopic structure, allows installers to directly pull multiple LED display modules mounted on opposite sides of the long fixed rod via a side moving shaft by rotating the long fixed rod and the short fixed rod. Furthermore, the ends of both the long and short fixed rods are installed within stroke grooves. After reaching their limit stroke, the long and short fixed rods are horizontally aligned, allowing multiple LED display modules to adhere to the surface of the main frame or reference frame, thus ensuring the stable assembly of multiple LED display modules into an LED display screen.

[0028] The X-shaped connection structure of the longitudinal fixing rods, with multiple X-shaped structures rotatably connected at their ends, allows multiple longitudinal fixing rods and LED display modules to rotate synchronously during installation, especially during disassembly, ensuring the stability and safety of multiple LED display modules during installation; the L-shaped structure of the longitudinal fixing rods further ensures the stability of multiple LED display modules during installation.

[0029] 2. This invention, through the design of a locking mechanism, uses fixing springs and radial recesses on the surfaces of the limiting shaft and locking shaft to fix the main moving shaft and the side moving shaft respectively. This allows the installer to stably pull the side moving shaft, enabling the telescopic structure to reach its limit stroke. After reaching the limit stroke, the position of the side moving shaft can be fixed to ensure that the telescopic structure remains at its limit stroke, thus guaranteeing the stability of the LED display screen composed of multiple LED display modules. Attached Figure Description

[0030] The accompanying drawings of the present invention will be described below to enable those skilled in the art to understand them.

[0031] Figure 1 This is a schematic diagram of the overall structure in Embodiment 1 of the present invention;

[0032] Figure 2 This is a schematic diagram of the other side of the overall structure in Embodiment 1 of the present invention;

[0033] Figure 3 This is a schematic diagram of the internal structure in Embodiment 1 of the present invention;

[0034] Figure 4 This is a schematic diagram of the other side of the internal structure in Embodiment 1 of the present invention;

[0035] Figure 5 This is a schematic diagram of the connection between the long fixing rod and the short fixing rod in Embodiment 1 of the present invention;

[0036] Figure 6 This is a schematic diagram showing the connection of the long fixing rod and the short fixing rod on the other side in Embodiment 1 of the present invention;

[0037] Figure 7 This is a schematic diagram of the overall structure in Embodiment 2 of the present invention;

[0038] Figure 8 This is a schematic diagram of the other side of the overall structure in Embodiment 2 of the present invention;

[0039] Figure 9 This is a schematic diagram of the internal structure in Embodiment 2 of the present invention;

[0040] Figure 10 This is a schematic diagram of the other side of the internal structure in Embodiment 2 of the present invention;

[0041] Figure 11 This is a schematic diagram of the connection between the long fixing rod and the short fixing rod in Embodiment 2 of the present invention;

[0042] Figure 12 This is a schematic diagram showing the connection of the long fixing rod and the short fixing rod on the other side in Embodiment 2 of the present invention.

[0043] In the diagram: 1. Main frame; 11. Reference frame; 2. Telescopic mechanism; 21. Main moving shaft; 22. Longitudinal fixed rod; 23. Shortitudinal fixed rod; 24. Side moving shaft; 25. Magnetic strip; 3. Locking mechanism; 31. Limiting shaft; 32. Locking shaft; 33. Fixing spring; 331. Radial notch; 4. Stroke groove. Detailed Implementation

[0044] To facilitate understanding by those skilled in the art, the technical solution of the present invention will be explained in detail below.

[0045] When installing an LED display screen, the usual method is to first customize its external support frame and then install the LED display modules one by one inside the frame. However, installing the LED display modules one by one on the construction site is inefficient. In addition, the subsequent debugging work after installation requires a lot of on-site installation time. Therefore, the purpose of this invention is to enable the rapid installation of multiple LED display modules on the construction site.

[0046] Example 1: As Figures 1 to 6 An LED display screen is shown, comprising a main frame 1, a telescopic mechanism 2, and a locking mechanism 3. The main frame 1 is pre-customized according to the user's requirements for the number or size of LED display modules. A travel groove 4 is formed on the inner wall of the main frame 1, with one end of the travel groove 4 being open. The telescopic mechanism 2, which carries multiple LED display modules, is slidably installed within the travel groove 4. The telescopic mechanism 2 can quickly extend to allow for rapid installation of the LED display modules, thereby reducing the installation time on-site and improving installation efficiency; or it can quickly retract to allow for rapid disassembly of the LED display modules for later maintenance and repair. The locking mechanism 3 passes through the side wall of the main frame 1 and is rotatably installed onto the inner wall surface of the opposite side. The locking mechanism 3 is perpendicular to the side wall and is used to fix the telescopic mechanism 2, preventing it from sliding after installation. This prevents the LED display modules from becoming uneven due to the sliding of the telescopic mechanism 2 during installation or use.

[0047] The main frame 1 has an open structure, and the telescopic structure is installed from the open end of the main frame 1. The open structure of the main frame 1 makes it easy for installers to install the telescopic structure. A cover plate is installed at the open end of the main frame 1 by means of a snap-fit. After the telescopic structure is installed, the installer snaps the cover plate into the open end of the main frame 1, thereby making the main frame 1 a closed structure and making the structure of the main frame 1 more stable.

[0048] like Figures 3 to 6 As shown, the telescopic mechanism 2 includes a main moving shaft 21, a long fixed rod 22, a short fixed rod 23, and a side moving shaft 24. The main moving shaft 21 is located within the travel groove 4. Long fixed rods 22 are vertically and rotatably mounted on both ends of the main moving shaft 21. Short fixed rods 23 are rotatably mounted on the middle of each long fixed rod 22. Multiple long fixed rods 22 and short fixed rods 23 are alternately connected along the extension direction of the main frame 1. The other end of each short fixed rod 23 is rotatably mounted to the end of another long fixed rod 22 and is slidably mounted within the travel groove 4. Side moving shafts 24 are rotatably mounted on the extension ends of multiple long fixed rods 22 and short fixed rods 23, and are slidably mounted within the travel groove 4. This forms a telescopic mechanism 2 capable of extending or retracting, and since the connecting ends of the long fixed rods 22 and short fixed rods 23 are all located within the travel groove 4...

[0049] It should be noted that magnetic blocks are fixedly installed on opposite sides of the longitudinal fixing rod 22 with glue, and matching dissimilar magnetic blocks are glued to the surface of the LED display module. Thus, the LED display module is pre-installed on opposite sides of the longitudinal fixing rod 22 by magnetic adsorption, and the length of the LED display module is the same as the length of the longitudinal fixing rod 22.

[0050] When the telescopic mechanism 2 extends, the installer inserts the side moving shaft 24 into the main moving shaft 21 from the opening of the travel groove 4, so that the entire telescopic mechanism 2 is inserted into the travel groove 4. Then, the locking mechanism 3 fixes the main moving shaft 21 to prevent the telescopic mechanism 2 from not being able to fully extend. After fixing the main moving shaft 21, the installer pulls the side moving shaft 24 along the extension direction of the travel groove 4 until it is pulled to the limit travel of the telescopic mechanism 2, that is, the long fixing rod 22 and the short fixing rod 23 are horizontally aligned and both are attached to the side wall of the main frame 1 located in the travel groove 4, thereby the telescopic mechanism 2 is in the extended state.

[0051] When the telescopic mechanism 2 reaches its limit stroke and is in the extended state, the long fixed rod 22 and the short fixed rod 23 are horizontally overlapped and both are attached to the side wall of the main frame 1, thereby driving multiple LED display modules to be horizontally attached, and thus making the LED display modules attached to the main frame 1 and combined to form an LED display screen.

[0052] It should be noted that the long fixing rod 22 and the short fixing rod 23 are installed in parallel vertically to ensure that both the long fixing rod 22 and the short fixing rod 23 can fit against the main frame 1; when installing LED displays of different sizes, multiple telescopic mechanisms 2 of different lengths can be used to cooperate with each other to complete the installation.

[0053] like Figures 1 to 2 As shown, the locking mechanism 3 includes a limiting shaft 31 and a locking shaft 32. The limiting shaft 31 is used to fix the main moving shaft 21, and the locking shaft 32 is used to fix the side moving shaft 24. The limiting shaft 31 and the locking shaft 32 are respectively installed at the stop points at both ends of the travel groove 4, and either end of the limiting shaft 31 and the locking shaft 32 passes through one side wall of the main frame 1 and is rotatably installed to the inner wall of the opposite surface. A directional paddle is fixedly installed on the portion of the limiting shaft 31 and the locking shaft 32 that passes through the side wall of the main frame 1. The limiting shaft 31 and the locking shaft 32 are rotatably installed on the inner wall of the main frame 1 and are perpendicular to the travel groove 4.

[0054] The outer circumferential surfaces of the limiting shaft 31 and the locking shaft 32 are both fixedly mounted with fixing springs 33 by welding. The fixing springs 33 have a fan-shaped structure. When the limiting shaft 31 and the locking shaft 32 rotate, the fixing springs 33 on their surfaces can extend out respectively, thereby fixing the main moving shaft 21 and the side moving shaft 24 respectively. This ensures that the telescopic mechanism 2 and the multiple LED display modules fit against the side wall of the main frame 1 and remain flat.

[0055] The surface of the fixing spring 33 is provided with a radial notch 331 along the locking shaft 32 or the limiting shaft 31. When the fixing spring 33 extends out of the surface of the locking shaft 32 or the limiting shaft 31, the radial notch 331 can fit the main moving shaft 21 or the side moving shaft 24, so that the main moving shaft 21 or the side moving shaft 24 is located in the radial notch 331, thereby completing the fixing of the main moving shaft 21 and the side moving shaft 24.

[0056] It should be noted that the radial notches 331 on the surfaces of the fixing spring pieces 33 on the outer circumferences of the locking shaft 32 and the limiting shaft 31 face opposite directions, and their orientation is the same as that of the locking shaft 32 and the limiting shaft 31.

[0057] When the installer installs the LED display module, after inserting the telescopic mechanism 2 and the LED display module, the installer first rotates the limiting shaft 31 and extends the fixing spring 33 on its surface. After extending, the spring 33 fits against the surface of the drive shaft to fix the position of the drive shaft. Then, the installer pulls the side moving shaft 24 so that the long fixing rod 22 and the short fixing rod 23 are horizontally aligned. At this time, the telescopic mechanism 2 is at its limit stroke and fits against the side wall of the main frame 1. The installer rotates the locking shaft 32 by rotating the directional lever and extends the fixing spring 33 on its surface. The fixing spring 33 on the surface of the locking shaft 32 rotates and extends to fit against the side moving shaft 24 at the limit stroke, thus fixing the side moving shaft 24 at the limit stroke. In this way, the main moving shaft 21 and the side moving shaft 24 are fixed, preventing the main moving shaft 21 and the side moving shaft 24 from moving at the limit stroke, thereby preventing unevenness on the surface of the LED display screen composed of multiple LED display modules.

[0058] The opening gap of the radial notch 331 gradually increases along one side surface, with the largest opening gap at the initial contact surface between the radial notch 331 and the main moving shaft 21 or the side moving shaft 24. This allows for easy insertion of the main moving shaft 21 or the side moving shaft 24 into the radial notch 331 when the user fixes it. When the installer rotates the limiting shaft 31 or the locking shaft 32 to extend the fixing spring 33 on its surface, the radial notch 331 on the surface of the fixing spring 33 contacts the main moving shaft 21 or the side moving shaft 24, i.e., the radial notch 331... The point of maximum gap first contacts the main moving shaft 21 or the side moving shaft 24, so that the main moving shaft 21 or the side moving shaft 24 can enter the radial recess 331 more stably; then, as the fixing spring 33 rotates continuously, it drives the radial recess 331 to move continuously, so that the point of minimum gap of the radial recess 331 contacts the main moving shaft 21 or the side moving shaft 24, so as to complete the fixed clamping of the main moving shaft 21 or the side moving shaft 24; it should be noted that the opening gap at the point of minimum radial gap is consistent with the diameter of the main moving shaft 21 or the side moving shaft 24.

[0059] The sidewalls at the point of minimum cross-sectional area of ​​the radial recess 331, i.e., at the point of minimum opening gap at the root of the radial recess 331, are parallel to each other, and the length of the parallel sidewalls is greater than the diameter of the side moving shaft 24 or the main moving shaft 21. This allows the main moving shaft 21 or the side moving shaft 24 to be stably fixed when it is located inside the radial recess 331. When the main moving shaft 21 or the side moving shaft 24 enters from the point of maximum gap in the radial recess 331 and moves to the point of minimum gap for fixing, the sidewalls on both sides, whose length is greater than the diameter of the main moving shaft 21 or the side moving shaft 24, come into contact with and clamp the main moving shaft 21 or the side moving shaft 24. This facilitates the entry of the main moving shaft 21 and the side moving shaft 24 into the radial recess 331, and ensures stable fixing after entering the radial recess 331.

[0060] like Figures 5 to 6 As shown, the longitudinal fixing rod 22 has an L-shaped structure. On the side of the longitudinal fixing rod 22 perpendicular to the main frame 1, a magnetic strip 25 with an exposed S pole (S-pole) is glued and fixed. The frame of the LED display module, parallel to the surface of the longitudinal fixing rod 22, has a magnetic strip 25 with an exposed N-pole (N-pole) that attracts the S-pole magnetic strip 25 (N-pole magnetic strip 25). The S-pole and N-pole magnetic strips 25 are in a state of opposite attraction, thus fixing the LED display module to the surface of the longitudinal fixing rod 22. The magnetic strips 25 in this opposite attraction state allow for quick installation and fixing of the LED display module, or quick disassembly and repair after use. Furthermore, when the longitudinal fixing rod 22 is attached to the main frame 1, the opposite attraction of the magnetic strips 25 ensures that the LED display module can stably adhere to the longitudinal fixing rod 22, thereby ensuring the flatness of the surface of the LED display screen after multiple LED display modules are installed to form the LED display.

[0061] During the installation of the LED display screen, the installers first installed the pre-customized main frame 1. Then, the installers removed the cover plate at the opening end of the main frame 1 and installed the telescopic structure from the opening end of the main frame 1. The installers then inserted the side moving shaft 24 and the main moving shaft 21 into the stroke groove 4 from the opening end in sequence. Then, the installers rotated the limiting shaft 31 by rotating the directional paddle, so that the fixing spring 33 and the radial notch 331 on its surface fixed the main moving shaft 21.

[0062] After fixing, the longitudinal fixing rod 22 and the short fixing rod 23 are rotated by pulling the side moving shaft 24. When the telescopic structure reaches its limit stroke by pulling the side moving shaft 24, that is, when the longitudinal fixing rod 22 and the short fixing rod 23 are horizontally aligned, the longitudinal fixing rod 22 and the short fixing rod 23 closest to the side moving shaft 24 reach their limit stroke first. After reaching their limit stroke, they will drive the adjacent longitudinal fixing rod 22 and the short fixing rod 23 to rotate and be horizontally aligned. When all the longitudinal fixing rods 22 and the short fixing rods 23 are horizontally aligned, the entire telescopic structure is in its limit stroke state. At this time, the installer rotates the locking shaft 32 to rotate the fixing spring 33 and the radial notch 331 on its surface, thereby completing the fixing of the side moving shaft 24. The longitudinal fixing rod 22 drives the LED display module to fit against the longitudinal fixing rod 22, thereby ensuring the surface flatness of multiple LED display modules, thus completing the installation of multiple LED display modules.

[0063] Example 2: As Figures 7 to 12 An LED display screen is shown, wherein Figure 7 and Figure 8 This is a schematic diagram of the structure of the LED display screen of the present invention. Figure 9 and Figure 10 This is a schematic diagram of the internal structure of the LED display screen of the present invention; this embodiment shows a variation of the adjustment mechanism, wherein the same or corresponding parts as in embodiment 1 are all denoted by the same reference numerals, and only the differences from the above embodiment are described below.

[0064] like Figures 7 to 8 As shown, multiple parallel reference frames 11 are fixedly installed inside the main frame 1 by bolts. Each reference frame 11 has a travel groove 4, and telescopic structures are slidably installed in the travel grooves 4 of adjacent reference frames 11. Multiple reference frames 11 can complete the installation of multiple telescopic structures and LED display modules, thereby forming an LED display screen.

[0065] The reference frame 11 is a rectangular strip structure made of aluminum alloy plate. When the telescopic structure is installed, the reference frame 11 can also be made to fit against the surface of one side of the reference frame 11 when the longitudinal fixing rod 22 is horizontally aligned, which is beneficial to the surface flatness of multiple LED display modules after installation. The reference frame 11 has a travel groove 4 parallel to the surface of the main frame 1. The telescopic structure is slidably installed between adjacent travel grooves 4. One end of the travel groove 4 is open, and the telescopic structure is installed from the open side.

[0066] When installing the telescopic structure, first install the telescopic structure into the stroke groove 4 of the adjacent reference frame 11, then move the limiting shaft 31 to fix the main moving shaft 21 through the fixing spring 33 and radial notch 331 on its surface; after the main moving shaft 21 is fixed, the installer pulls the side moving shaft 24 and extends it to its limit stroke, then fixes the side moving shaft 24 through the locking shaft 32 and the fixing spring 33 and radial notch 331 on its surface, and finally installs the entire reference frame 11 into the main frame 1 and fixes it with bolts, thereby completing the rapid installation of the telescopic structure and multiple LED display modules;

[0067] It should be noted that during installation, multiple reference frames 11 of different lengths can be spliced ​​and fixed together to extend the length of the reference frames 11 and multiple LED display modules. After the LED display screen is formed, there are gaps between the LED display modules in adjacent reference frames 11, i.e., the longitudinal fixing rods 22 for installing the LED display modules. Therefore, this embodiment is more suitable for installing spliced ​​LED display screens.

[0068] The longitudinal fixing rods 22 are connected in an X-shape by rotating at their middle sections. The ends of the multiple X-shaped longitudinal fixing rods 22 are also connected by rotation. The opposing longitudinal fixing rods 22 are L-shaped and equipped with magnetic strips 25 for fixing the LED display modules. This allows for quick installation of the LED display modules via the telescopic structure. When the installer pulls the side moving shaft 24, the multiple longitudinal fixing rods 22 extend synchronously, allowing the LED display modules to extend synchronously as well. Especially during post-installation repairs of the LED display modules, after the locking shaft 32 releases the fixation of the side moving shaft 24, the installer pulls the side moving shaft 24 to retract the telescopic structure, causing the multiple longitudinal fixing rods 22 to rotate synchronously. This allows the LED display modules to rotate synchronously along with the longitudinal fixing rods 22, resulting in a synchronized tilting state for easy removal and repair by the installer.

[0069] The present invention is described using only the above embodiments, but the structure, arrangement, and connection relationships of the various components of the present invention can be changed accordingly.

Claims

1. An LED display screen comprising a pre-installed main frame (1), characterized in that: The device includes a reference frame (11), a telescopic mechanism (2), and a locking mechanism (3). The reference frame (11) is fixedly installed along the extension direction of the main frame (1). Multiple reference frames (11) are installed parallel to each other along the extension direction of the main frame (1). At least one of the reference frames (11) and the main frame (1) is slidably installed with a telescopic mechanism (2) that carries the LED display screen. The telescopic mechanism (2) can quickly extend or retract to quickly install or disassemble the LED display screen. At any end of at least one of the main frame (1) and the reference frame (11), a locking mechanism (3) is rotatably installed through it. The locking mechanism (3) is used to fix the telescopic mechanism (2).

2. The LED display screen of claim 1, wherein: The telescopic mechanism (2) includes a main moving shaft (21), a side moving shaft (24), a long fixed rod (22), and a short fixed rod (23). The long fixed rod (22) is vertically and rotatably mounted on both ends of the main moving shaft (21). At least one short fixed rod (23) or a long fixed rod (22) is rotatably mounted on the surface of the long fixed rod (22). The long fixed rod (22) and the short fixed rod (23) are staggered and connected along the extension direction of the reference frame (11).

3. The LED display screen of claim 1, wherein: The locking mechanism (3) includes a limiting shaft (31) and a locking shaft (32). The limiting shaft (31) and the locking shaft (32) are rotatably mounted on the inner wall of the main frame (1) and perpendicular to the travel groove (4). Either end of the limiting shaft (31) and the locking shaft (32) passes through one side wall of the main frame (1) and is rotatably mounted on the inner wall of the opposite side. Rotational paddles are fixedly installed on the portion of the limiting shaft (31) and the locking shaft (32) that passes through the side wall of the main frame (1). Fixing springs (33) are fixedly installed on the outer circumferential surfaces of the limiting shaft (31) and the locking shaft (32).

4. An LED display screen according to claim 1, characterized in that: The reference frame (11) is a rectangular strip structure, wherein the reference frame (11) has a stroke groove (4) on the surface parallel to the main frame (1), and one end of the stroke groove (4) is open.

5. The LED display screen of claim 3, wherein: The fixing spring (33) has a fan-shaped structure, and a radial notch (331) is provided on the surface of the fixing spring (33) along the locking shaft (32) or the limiting shaft (31).

6. The LED display screen of claim 2, wherein: The longitudinal fixing rod (22) is an L-shaped structure. At least one side of the L-shaped longitudinal fixing rod (22) is fixedly installed with a magnetic strip (25) exposing the S pole. At least one magnetic strip (25) exposing the N pole is fixedly installed on the surface of the LED display screen parallel to the longitudinal fixing rod (22).

7. An LED display screen according to claim 5, characterized in that: The cross-sectional area of ​​the radial notch (331) gradually increases along one side of the surface.

8. The LED display screen of claim 5, wherein: The sidewalls at the point where the cross-sectional area of ​​the radial notch (331) is the smallest are parallel to each other, and the length of the parallel sidewalls is greater than the diameter of the side moving axis (24) or the main moving axis (21).

9. The LED display screen of claim 1, wherein: The main frame (1) has an open structure, and a cover plate is detachably installed at the open end of the main frame (1).

10. The LED display screen of claim 2, wherein: The longitudinal fixing rods (22) are rotatably connected in the middle to form an X-shaped structure, and the ends of the multiple X-shaped longitudinal fixing rods (22) are rotatably connected.

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