A rack, an LED display device, and an LED display equipment

Abstract

This utility model discloses a rack, an LED display device, and an LED display equipment, relating to the field of LED display technology. The rack includes a frame assembly, a first lock cylinder, and a first locking assembly. The first lock cylinder is located on one side of the frame assembly and has a first lock hole. The first locking assembly includes a first locking shaft, which is located on the other side of the frame assembly and is movably disposed along the axial direction of the first lock hole. The first locking shaft is used to insert into the first lock hole of an adjacent rack and is axially limited to the first lock cylinder of the adjacent rack. This utility model solution can realize the rapid splicing of multiple racks.

Description

Technical Field

[0001] This utility model relates to the field of LED display technology, and in particular to a frame, an LED display device, and an LED display equipment. Background Technology

[0002] LED (Light Emitting Diode) displays are display devices made of LEDs. By controlling the brightness and color combination of LEDs, they can display text, images, videos, and other content, and are widely used in commercial window displays and other fields.

[0003] In related technologies, large-scale LED display equipment is typically constructed by assembling modules composed of multiple LED display devices, thus achieving a modular design for large-scale equipment. This process requires the assembly of racks for multiple LED display devices. Therefore, how to achieve rapid assembly of multiple racks is a key research focus for those in this field. Utility Model Content

[0004] The main purpose of this utility model is to propose a rack, an LED display device, and an LED display equipment, which aims to enable the rapid splicing of multiple racks to improve production efficiency.

[0005] To achieve the above objectives, the present invention proposes a frame comprising a frame assembly, a first lock cylinder, and a first locking assembly. The first lock cylinder is located on one side of the frame assembly and has a first lock hole. The first locking assembly includes a first locking shaft located on the other side of the frame assembly and is movably disposed along the axial direction of the first lock hole. The first locking shaft is used to insert into the first lock hole of an adjacent frame and is axially limited to the first lock cylinder of the adjacent frame.

[0006] In one embodiment, the first lock cylinder includes a first base and a first limiting member. The first base is disposed on one side of the frame assembly and forms a sliding cavity. The side wall of the sliding cavity is provided with the first lock hole. The first limiting member is slidably disposed in the sliding cavity perpendicular to the axis of the first lock hole and is provided with a snap-fit ​​hole that overlaps with the first lock hole.

[0007] In one embodiment, the first locking assembly further includes a second seat, which is disposed on the other side of the frame assembly and has a telescopic hole coaxially arranged with the first lock hole. The first lock shaft passes through the telescopic hole and is movably disposed along the depth direction of the telescopic hole.

[0008] In one embodiment, the frame further includes a positioning member. The frame assembly has a positioning hole on the same side as the first lock cylinder or the first locking assembly. The positioning member is disposed on the other side of the frame assembly along the axial direction of the positioning hole. And / or, the frame further includes a first magnetic attractor and a second magnetic attractor with opposite magnetic properties. The first magnetic attractor is spaced apart from the first lock cylinder or the first locking assembly on the same side, and the second magnetic attractor is disposed on the side of the frame assembly opposite to the first magnetic attractor.

[0009] In one embodiment, the frame assembly includes two horizontal beams, two vertical beams, and a mounting beam. The ends of adjacent horizontal beams and vertical beams are connected sequentially to enclose and form a mounting opening. The mounting beam is located in the middle of the mounting opening. The first lock cylinder is located on one of the horizontal beams, and the first lock shaft is located on the other horizontal beam.

[0010] In one embodiment, the frame assembly further includes a connector that connects to adjacent crossbeams and vertical beams. One side of the connector has a receiving portion, and the receiving portion has a protruding mating portion or a recessed mating groove on the side opposite to the vertical beam.

[0011] In one embodiment, the frame further includes a second lock cylinder and a second locking assembly. The second lock cylinder is disposed on one side of the crossbeam near the mounting beam and has a second locking hole through it. The second locking assembly includes a second locking shaft, which is disposed on another crossbeam along the axial direction of the second locking hole and is rotatably disposed. A first limiting portion is protruding from the circumference of the second locking shaft.

[0012] In one embodiment, the frame further includes a third lock cylinder and a third locking assembly. The third lock cylinder is disposed on one of the vertical beams and has a third locking hole through it. The third locking assembly includes a third locking shaft, which passes through another vertical beam along the axial direction of the third locking hole and is rotatably disposed. A second limiting portion is protruding from the periphery of the third locking shaft.

[0013] This utility model also proposes an LED display device, which includes a carrier plate assembly, LED beads, and a frame as described above. The carrier plate assembly is disposed on one side of the frame and has an array of light-transmitting holes through it. The LED beads are disposed on the side of the carrier plate assembly opposite to the frame.

[0014] This utility model also proposes an LED display device, which includes at least two LED display devices as described above. When the at least two LED display devices are spliced ​​together, the first locking shaft of the frame is inserted into the first locking hole of the adjacent frame and is axially limited to the first locking core of the adjacent frame.

[0015] In this invention, two frames to be joined are brought close together, with the first locking assembly of one frame aligned with the first locking cylinder of the adjacent frame. Then, the first locking shaft is movably inserted into the first locking hole of the first locking cylinder, and the first locking cylinder axially limits the first locking shaft. At this point, the two frames are firmly connected in the same straight direction through the cooperation of the first locking cylinder and the first locking shaft, making them difficult to separate. Therefore, this invention achieves a one-plug-and-lock effect, and the joining process of adjacent frames takes only a few seconds, significantly improving work efficiency compared to the traditional bolt tightening method. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the structure of an embodiment of the LED display device provided by this utility model; Figure 2 for Figure 1 A schematic diagram of the LED display device from another perspective; Figure 3 for Figure 1 The diagram shows an exploded view of the LED display device. Figure 4 for Figure 3 A schematic diagram of the power supply module structure; Figure 5 for Figure 3 A magnified view of a section at point A in the middle; Figure 6 for Figure 3 Schematic diagram of the middle frame; Figure 7 for Figure 6 A magnified view of a section at point B in the middle; Figure 8 for Figure 7 Exploded view of the first locking assembly; Figure 9 for Figure 7 Schematic diagram of the middle connector; Figure 10 for Figure 6 A magnified view of a section at point C; Figure 11 for Figure 10 Exploded view of the second locking assembly; Figure 12 for Figure 6 A magnified view of a section at point D; Figure 13 for Figure 12 Exploded view of the third locking assembly; Figure 14 for Figure 6 A structural schematic diagram of the rack from another perspective; Figure 15 for Figure 14 A magnified view of a section at point E in the middle; Figure 16 for Figure 15 A schematic diagram of the exploded structure of the first lock cylinder; Figure 17 for Figure 14 A magnified view of a section at point F.

[0018] Explanation of reference numerals: 100, LED display device; 10, rack; 1. Frame assembly; 11. Horizontal beam; 13. Vertical beam; 15. Mounting beam; 151. Mounting groove; 17. Connector; 171. First connecting part; 1711. First connecting hole; 1713. First positioning part; 172. Second connecting part; 1721. Second connecting hole; 1723. Second positioning part; 173. Receiving part; 1731. Receiving surface; 1741. Butt joint; 1743. Butt joint groove; 175. First stop part; 176. First connecting hole; 18. Mounting opening; 21. First lock cylinder; 211. First base body; 2111. Mounting plate; 21111. First fixing hole; 21113. First central hole; 2113. Base shell; 21131. Second stop part; 21133. Second central hole; 21135. Sliding cavity; 21137. Opening; 2115. First lock hole; 213. Limiting member; 2131. Snap-fit ​​hole; 2133. Stop hole; 2135. Grip part; 23. First locking assembly; 231. Second base; 2311. Second fixing hole; 2313. First pin hole; 2315. Telescopic hole; 233. First grip; 2331. First sleeve; 23311. First sleeve hole; 2333. First handle; 23331. Anti-slip protrusion; 235. First locking shaft; 2351. Connecting boss; 2353. First stroke groove; 2355. Limiting groove; 31. Second lock cylinder; 311. First auxiliary seat; 313. Lock plate; 3131. Second lock hole; 33. Second locking assembly; 331. Second auxiliary seat; 3311. Connecting flange; 3313. Second connecting hole; 332. Third seat; 3321. Second pin hole; 333. Second grip; 3331. Second sleeve hole; 3333. Separating plate; 334. Locking handle; 335. Second locking shaft; 3351. First limiting part; 336. Elastic element; 337. Second sleeve; 3371. Second stroke groove; 41. Third lock cylinder; 411. Third lock hole; 43. Third locking assembly; 431. Fourth base; 433. Locking member; 435. Third gripping member; 4351. First side hole; 437. Third lock shaft; 4371. Second limiting part; 4373. Second side hole; 438. Connecting pin; 51. Positioning component; 53. First magnetic component; 55. Second magnetic component; 57. Power module; 573. Power connector; 5751. Fixing component; 5753. Second handle; 70. Carrier board assembly; 71. Base frame; 73. Circuit board; 731. Light transmission hole; 735. Interface; 75. LED beads.

[0019] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0021] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0022] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0023] LED (Light Emitting Diode) displays are display devices made of LEDs. By controlling the brightness and color combination of LEDs, they can display text, images, videos, and other content, and are widely used in commercial window displays and other fields.

[0024] In related technologies, large-scale LED display equipment, such as LED rental screens, is typically composed of modules consisting of multiple LED display devices, thus achieving a modular design for large-scale equipment. This process requires assembling racks for multiple LED display devices. For example, in some rack assembly processes, adjacent racks are connected one by one by screwing in screws, but this method is relatively inefficient. Therefore, how to achieve rapid assembly of multiple racks is a key research focus for those in this field.

[0025] To address the aforementioned issues, this utility model proposes a rack 10, an LED display device 100, and an LED display equipment, aiming to enable rapid assembly of multiple racks 10 to improve production efficiency.

[0026] Reference Figures 1 to 17 In one embodiment of the present invention, the frame 10 includes a frame assembly 1, a first lock cylinder 21, and a first locking assembly 23. The first lock cylinder 21 is disposed on one side of the frame assembly 1 and has a first lock hole 2115. The first locking assembly 23 includes a first locking shaft 235, which is disposed on the other side of the frame assembly 1 and is movably disposed along the axial direction of the first lock hole 2115. The first locking shaft 235 is used to be inserted into the first lock hole 2115 of the adjacent frame 10 and is axially limited to the first lock cylinder 21 of the adjacent frame 10.

[0027] The frame assembly 1 serves as the basic frame of the rack 10, supporting the carrier plate assembly 70 and other functional components. The first lock cylinder 21 and the first locking assembly 23 are mating connection mechanisms located on both sides of the rack 10, which achieve quick locking through a one-insertion-one-lock method.

[0028] In this invention, two frames 10 to be joined are brought close together, with the first locking assembly 23 of one frame 10 facing the first locking cylinder 21 of the other adjacent frame 10. Then, the first locking shaft 235 is movably inserted into the first locking hole 2115 of the first locking cylinder 21, and the first locking cylinder 21 axially limits the first locking shaft 235. At this point, the two frames 10 are firmly connected together in the same straight direction through the cooperation of the first locking cylinder 21 and the first locking shaft 235, making them difficult to separate. Therefore, this invention achieves a one-plug-and-lock effect, and the joining process of adjacent frames 10 only takes a few seconds, significantly improving work efficiency compared to the traditional bolt tightening method.

[0029] Reference Figure 7 , Figure 8 , Figure 15 and Figure 16 In one embodiment of the present invention, the first lock cylinder 21 includes a first seat 211 and a first limiting member 213. The first seat 211 is disposed on one side of the frame assembly 1 and forms a sliding cavity 21135. The side wall of the sliding cavity 21135 is provided with the first lock hole 2115. The first limiting member 213 is slidably disposed in the sliding cavity 21135 perpendicular to the axis of the first lock hole 2115 and is provided with a snap-fit ​​hole 2131 that overlaps with the first lock hole 2115.

[0030] The first locking shaft 235 has a circumferential recessed limiting groove 2355, which allows the first limiting member 213 to be sleeved onto the groove wall of the limiting groove 2355 through the snap-fit ​​hole 2131.

[0031] In this embodiment, the first limiting member 213 is initially positioned within the sliding cavity 21135, with its snap-fit ​​hole 2131 offset from the first locking hole 2115 on the base, allowing the first locking shaft 235 to be inserted. Next, the first limiting member 213 slides horizontally and then engages with the limiting groove 2355 of the first locking shaft 235 through the snap-fit ​​hole 2131, thereby achieving axial limiting of the first locking shaft 235. Therefore, this embodiment achieves rapid limiting of the first locking shaft 235 by sliding the first limiting member 213, which is beneficial for further improving assembly efficiency.

[0032] Optionally, the first seat 211 includes a mounting plate 2111 and a seat housing 2113. The mounting plate 2111 has a first fixing hole 21111 and a first central hole 21113. The seat housing 2113 forms a sliding cavity 21135 with an open top. The bottom wall of the sliding cavity 21135 has a second central hole 21133, and the side wall has an opening 21137. A second stop portion 21131 is also formed. The mounting plate 2111 covers the open top of the sliding cavity 21135 and is located inside the crossbeam 11. The first central hole 21113 and the second central hole 21133, which are axially connected, constitute a first locking hole 2115. A fastener is sequentially inserted into the holes of the crossbeam 11, the first fixing hole 21111, and the second stop portion 21131, thereby fastening the first seat 211 to the crossbeam 11.

[0033] The locking hole 2131 of the limiting member 213 includes a first half-hole and a second half-hole with different radii. A gripping portion 2135 perpendicular to the sliding direction is also formed on one side of the limiting member 213. The gripping portion 2135 extends through the opening 21137 of the first seat 211 to facilitate pressing and driving the limiting member 213. The limiting member 213 may also be connected to a return spring, which, under the elastic force, causes the limiting member 213 to slide into the sliding cavity 21135 and automatically return to its original position. Furthermore, the limiting member 213 also has a stop hole 2133, with a second stop portion 21131 passing through the stop hole 2133, thereby limiting the sliding stroke of the limiting member 213.

[0034] When the first locking shaft 235 is inserted, pressing the grip 235 causes the limiting member 213 to slide inward into the sliding cavity 235, making the larger radius second half-hole coincide as much as possible with the first locking hole 2115, allowing the first locking shaft 235 to pass through. Then, releasing the grip 235 causes the smaller radius first half-hole to coincide as much as possible with the first locking hole 2115 under the spring's restoring force, and engages with the groove wall of the limiting groove 2355, thus achieving rapid locking of the first locking cylinder 21 onto the first locking shaft 235.

[0035] Reference Figure 7 , Figure 8 , Figure 15 and Figure 16 In one embodiment of the present invention, the first locking assembly 23 further includes a second seat 231. The second seat 231 is disposed on the other side of the frame assembly 1 and has a telescopic hole 2315 coaxially arranged with the first locking hole 2115. The first locking shaft 235 passes through the telescopic hole 2315 and is movably disposed along the depth direction of the telescopic hole 2315.

[0036] In this embodiment, the second seat 231 and the telescopic hole 2315 provide precise guidance for the first locking shaft 235, ensuring that the first locking shaft 235 always maintains coaxiality with the first locking hole 2115 during the telescopic process, making the insertion process very smooth and without jamming, simplifying the installation and adjustment process of the first locking shaft 235, and thus helping to further improve assembly efficiency.

[0037] Optionally, the second base 231 also has a second fixing hole 2311 and a first pin hole 2313. The first locking assembly 23 also includes a first grip 233, which further includes a first sleeve 2331 and a first handle 2333 connected to each other. The first sleeve 2331 has a first sleeve hole 23311 to fit onto the connecting boss 2351 of the first locking shaft 235, so that by pulling the first handle 2333, the first locking shaft 235 can be extended or retracted along the telescopic hole 2315. The outer side wall of the first handle 2333 also has an anti-slip protrusion 23331, which can further play an anti-slip role.

[0038] In addition, the side wall of the first locking shaft 235 is also recessed with a first travel groove 2353 and a limiting groove 2355. A pin is inserted into the first pin hole 2313 and the first travel groove 2353 in sequence to control the travel of the first locking shaft 235, so that the snap-fit ​​hole 2131 can be accurately fitted into the groove wall of the limiting groove 2355 to achieve axial limiting of the first locking shaft 235.

[0039] Reference Figure 6 and Figure 14 In one embodiment of this utility model, the frame 10 further includes a positioning member 51. The frame assembly 1 has a positioning hole on the same side as the first lock cylinder 21 or the first locking assembly 23. The positioning member 51 is disposed on the other side of the frame assembly 1 along the axial direction of the positioning hole. And / or, the frame 10 further includes a first magnetic attracting member 53 and a second magnetic attracting member 55 with opposite magnetic properties. The first magnetic attracting member 53 is disposed on the same side of the first lock cylinder 21 or the first locking assembly 23 at a distance, and the second magnetic attracting member 55 is disposed on the side of the frame assembly 1 opposite to the first magnetic attracting member 53.

[0040] The positioning component 51 can be a positioning pin, which is inserted into one side of the frame 10.

[0041] In this embodiment, before formally inserting the first locking shaft 235, the positioning member 51 of one frame 10 is roughly aligned with the positioning hole of the other frame 10 until they are perfectly aligned. At this point, the relative positions of the two frames 10 are basically determined, and the first locking shaft 235 and the first locking hole 2115 are naturally precisely positioned, simplifying the positioning and insertion of the first locking shaft 235, which in turn helps to further improve assembly efficiency.

[0042] Furthermore, when the two frames 10 approach each other to a certain distance, the first magnetic chuck 53 and the second magnetic chuck 55, with opposite polarities, begin to attract each other. The magnetic force pulls the two frames 10 closer and aligns them, greatly reducing the burden on operators for support and adjustment. The magnetic force also provides initial connection force before the locking mechanism takes effect, preventing the frames 10 from slipping, thus achieving pre-connection of adjacent frames 10 and further improving assembly efficiency.

[0043] Reference Figure 6 and Figure 14 In one embodiment of the present invention, the frame assembly 1 includes two horizontal beams 11, two vertical beams 13 and a mounting beam 15. The ends of adjacent horizontal beams 11 and vertical beams 13 are connected in sequence to form a mounting opening 18. The mounting beam 15 is located in the middle of the mounting opening 18. The first lock cylinder 21 is located on one of the horizontal beams 11, and the first lock shaft 235 is located on the other horizontal beam 11.

[0044] The mounting port 18 is used to install the carrier plate assembly 70. The mounting beam 15 has a mounting groove 151 for installing the power module 57. The bottom wall of the mounting groove 151 also has a clearance opening, allowing the power supply connector 573 of the power module 57 to pass through and make an electrical connection with the interface 735 of the carrier plate assembly 70. The power module 57 is also provided with a second handle 5753 and a fixing member 5751. The power module 57 is lifted by the second handle 5753 and fixedly connected to the mounting beam 15 by the fixing member 5751.

[0045] In this embodiment, two vertical beams 13 and two horizontal beams 11 are connected to form a sturdy rectangular outer frame. The middle mounting beam 15 divides this rectangle into two smaller areas, which enhances the bending and torsional stiffness of the frame assembly 1 and makes it less prone to deformation.

[0046] Furthermore, the placement of the first lock cylinder 21 and the first locking assembly 23 on the upper and lower crossbeams 11 means that the splicing of the frame 10 is carried out in the vertical direction, which conforms to the splicing method of gravity and makes the frame 10 more stable.

[0047] Reference Figure 7 and Figure 9 In one embodiment of the present invention, the frame assembly 1 further includes a connector 17, which is connected to the adjacent crossbeam 11 and the vertical beam 13. A receiving portion 173 is formed on one side of the connector 17, and the receiving portion 173 is provided with a protruding docking portion 1741 or a recessed docking groove 1743 on the side opposite to the vertical beam 13.

[0048] In this embodiment, the connector 17 is used to firmly connect the crossbeam 11 and the vertical beam 13, thereby forming a sturdy corner of the frame 10. It is worth noting that when the two frames 10 are spliced ​​together, the mating part 1741 of the connector 17 of the lower frame 10 can be accurately inserted into the mating groove 1743 of the connector 17 of the upper frame 10, thereby guiding the initial positioning of the two adjacent frames 10. The lower protrusion directly supports the upper frame 10, bearing most of its weight, which greatly reduces the load pressure on each lock.

[0049] Optionally, the receiving portion 173 also has a receiving surface 1731, which can be used to temporarily support the vertical beam 13. Furthermore, the connector 17 also has a protruding first stop portion 175, which can be used to further separate the crossbeam 11 and the vertical beam 13. The connector 17 also has a first connecting hole 176 for further installation of the frame 10 with external equipment.

[0050] The connector 17 also has a first connecting portion 171 and a second connecting portion 172. The first connecting portion 171 is fastened to the crossbeam 11 through a first connecting hole 1711, and the second connecting portion 172 is fastened to the vertical beam 13 through a second connecting hole 1721. In order to achieve quick positioning of the connector 17, a first positioning portion 1713 protrudes from one side of the first connecting portion 171 to engage with the groove of the crossbeam 11, and a second positioning portion 1723 protrudes from one side of the second connecting portion 172 to engage with the groove of the vertical beam 13.

[0051] Reference Figure 10 and Figure 11 In one embodiment of the present invention, the frame 10 further includes a second lock cylinder 31 and a second locking assembly 33. The second lock cylinder 31 is disposed on one side of the crossbeam 11 near the mounting beam 15 and has a second lock hole 3131 through it. The second locking assembly 33 includes a second lock shaft 335. The second lock shaft 335 is disposed on another crossbeam 11 along the axial direction of the second lock hole 3131 and is rotatably disposed. A first limiting part 3351 is protruding from the periphery of the second lock shaft 335.

[0052] The first limiting part 3351 is used to perform axial limiting engagement with the opening edge of the second locking hole 3131.

[0053] In this embodiment, when the second locking shaft 335 is inserted into the second locking hole 3131 of another frame 10 and rotated by a certain angle, such as 90°, the first limiting part 3351 on the locking shaft cannot be dislodged from the locking hole due to the limiting effect of the opening edge of the second locking hole 3131, thereby achieving axial limiting of the second locking shaft 335. Therefore, the two sets of locks in the vertical direction can distribute the splicing force to a larger area, reduce the force on a single point, make the connection between the two adjacent frames 10 more stable, and prevent the frame 10 from deforming.

[0054] Optionally, the second lock cylinder 31 includes a first auxiliary seat 311 and a lock plate 313. The protruding side edge of the first auxiliary seat 311 is connected to the upper crossbeam 11, and together with the lock plate 313, it passes through a second lock hole 3131. The second locking assembly 33 also includes a second auxiliary seat 331, a third seat 332, and a second gripper 333. The connecting flange 3311 of the second auxiliary seat 331 is used to fasten the connection to the lower crossbeam 11, thereby providing extended space for the installation of the third seat 332. The second auxiliary seat 331 also has a second connecting hole 3313 for further installation of the frame 10 with external equipment.

[0055] The third seat 332 is mounted above the first auxiliary seat 311 for the second sleeve 337 to be movably inserted. The second locking shaft 335 is movably inserted into the second sleeve 337. The second gripping member 333 is connected to the second locking shaft 335 through the second sleeve hole 3331 and is movably sleeved on the second sleeve 337, thereby rotating and driving the first limiting part 3351 of the second locking shaft 335 to change direction. The second sleeve 337 is also connected to an elastic member 336, such as a spring, so that the second sleeve 337 can automatically return to its original position after being pressed downward by the second gripping member 333.

[0056] The second grip 333 also forms an open-bottomed inner cavity, one side of which is detachably covered by a separation plate 3333 to facilitate the installation of the locking handle 334. The locking handle 334 also forms a circumferentially limited structure, such as a pawl, on the second sleeve 337. When the second grip 333 needs to be rotated, the locking handle 334 is pressed, thereby releasing the limiting engagement between the locking handle 334 and the second sleeve 337, allowing the second grip 333 to drive the second locking shaft 335 to rotate freely. In addition, the second grip 333 and the second sleeve 337 can also form a mutually limiting structure to restrict the rotation angle range of the second grip 333, thereby enabling the normal reversal of the second limiting part 4371.

[0057] The side wall of the third seat 332 is also provided with a second pin hole 3321, and the outer side wall of the second sleeve 337 is recessed with a second stroke groove 3371. A pin is inserted into the second pin hole 3321 and the second stroke groove 3371 in sequence to limit the movement stroke of the second sleeve 337, and further limit the movement stroke of the second grip 333 and the second locking shaft 335, so that the second locking shaft 335 can be accurately inserted into the second locking hole 3131.

[0058] Reference Figure 12 and Figure 13 In one embodiment of the present invention, the frame 10 further includes a third lock core 41 and a third locking assembly 43. The third lock core 41 is disposed on one of the vertical beams 13 and has a third lock hole 411 extending through it. The third locking assembly 43 includes a third lock shaft 437. The third lock shaft 437 passes through another vertical beam 13 along the axial direction of the third lock hole 411 and is rotatably disposed. A second limiting part 4371 protrudes from the periphery of the third lock shaft 437.

[0059] The third locking shaft 437 can form the second limiting part 4371 by means of a side wall pin.

[0060] In this embodiment, based on the first locking assembly 23 and the second locking assembly 33, a third locking core 41 and a third locking assembly 43 are added to the vertical beam 13, which realizes the horizontal expansion of the frame 10. Combined with the vertical splicing of the first locking assembly 23 and the second locking assembly 33, an M×N ultra-large display screen matrix can be constructed, which is conducive to further increasing the display area of ​​the LED.

[0061] Optionally, the third locking assembly 43 also includes a fourth seat 431, a locking member 433, and a third gripping member 435. The fourth seat 431 is installed on the inner side of the vertical beam 13, and the outer sides of the two vertical beams 13 are respectively installed with third lock cylinders 41. The outer side wall of the fourth seat 431 is also provided with threads, so that the inner cylinder wall of the locking member 433 can be movably sleeved on the fourth seat 431, and the movement stroke of the third gripping member 435 is limited.

[0062] The connecting pin 438 passes sequentially through the first side hole 4351 of the third grip 435 and the second side hole 4373 of the third locking shaft 437, connecting the third grip 435 and the third locking shaft 437 into one unit. Then, the third locking shaft 437 can be extended or retracted by pulling the third grip 435. A spring can also be connected between the third grip 435 and the fourth seat 431, and the spring's rebound force causes the third grip 435 to retract.

[0063] Reference Figures 1 to 3The present invention also proposes an LED display device 100, which includes a carrier plate assembly 70, LED beads 75 and a frame 10 as described above. The carrier plate assembly 70 is disposed on one side of the frame 10 and has an array of light-transmitting holes 731 through it. The LED beads 75 are disposed on the side of the carrier plate assembly 70 away from the frame 10.

[0064] The specific structure of the rack 10 is as described in the above embodiments. Since the LED display device 100 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0065] Reference Figure 5 The carrier assembly 70 may include a base frame 71 and a circuit board 73. The periphery of the base frame 71 is connected to the frame 10, and the periphery of the circuit board 73 is connected to the base frame 71. The circuit board 73 is provided with the light-transmitting hole 731.

[0066] Compared to other LED display devices, the mounting opening of the frame, in addition to the mounting beam, also has multiple vertical ribs for mounting three or more smaller circuit boards, resulting in a more complex structure and more gaps between the circuit boards, which is detrimental to improving the display effect. This invention uses two large circuit boards 73 as a single unit, spliced ​​together on the mounting beam 15, avoiding the need for multiple vertical ribs in the mounting opening 18. It also reduces the number of gaps caused by splicing multiple circuit boards, thus improving the overall display transparency. Furthermore, to achieve flush placement of the large circuit boards 73, a calibration fixture is connected to the circuit boards 73 and aligned by measurement, allowing the circuit boards 73 to be placed flush on the frame 10, further improving the display effect.

[0067] Reference Figures 1 to 3 In one embodiment of this utility model, a plurality of light-transmitting holes 731 are arranged in an array on the circuit board 73, and a first docking hole is provided through the mating edge of the circuit board 73. A plurality of lamp beads 75 are arranged in an array on the circuit board 73, and a lamp bead 75 is arranged in the solid area between two adjacent light-transmitting holes 731. The LED display device 100 also includes a potting layer, which fills the side of the circuit board 73 where the lamp beads 75 are located, and provides a clearance hole through it. The clearance hole partially or completely overlaps with the light-transmitting hole 731. A second docking hole is also provided through the mating edge of the potting layer, and the second docking hole partially or completely overlaps with the first docking hole.

[0068] Among them, further reference Figure 5Except for the mounting area, the circuit board 73 is filled with an array of light-transmitting holes 731 (the number of light-transmitting holes 731 is not fully shown in the attached figures due to software memory limitations). The physical areas between each light-transmitting hole 731 are arrayed with LED beads 75 (the number of LED beads 75 is not fully shown in the attached figures due to software memory limitations), and they are arranged at intervals with each light-transmitting hole 731, which is conducive to achieving the effect of holographic imaging.

[0069] In this embodiment, after the LED chip packaging and surface mounting steps are completed, a special transparent encapsulating adhesive is applied to the surface of the circuit board 73 as a potting layer, i.e., the GOB process. Because a flat, smooth, and seamless mirror surface is formed on the overall surface of the circuit board 73 and the LED chips 75, when multiple such GOB LED boards are spliced ​​together, the adhesive surface greatly reduces the sense of step and gaps at the physical splicing points. Because the potting layer is transparent and has a certain thickness, the transition at the splicing points when light is emitted from different LED boards is more natural, making the entire large screen look more like a single unit, rather than many small pieces pieced together.

[0070] In addition, the edge of the circuit board 73 is provided with a first mating hole, such as a semi-circular hole, and the edge of the potting layer is provided with a second mating hole, such as a semi-circular hole. When the circuit board 73 is spliced ​​with the circuit board 73 of another adjacent rack 10, the two adjacent first mating holes are spliced ​​to form a complete hole, and the two adjacent second mating holes are also spliced ​​to form a complete hole, which is conducive to achieving seamless splicing between the potting light boards, thereby further improving the integrity of the display effect.

[0071] Reference Figures 1 to 3 ,as well as Figure 6 and Figure 14 The present invention also proposes an LED display device, which includes at least two LED display devices 100 as described above, wherein the first locking shaft 235 of one adjacent frame 10 is inserted into the first locking hole 2115 of another frame 10 and is axially limited to the first locking core 21 of the other frame 10.

[0072] The specific structure of the LED display device 100 is as described in the above embodiments. Since the LED display device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0073] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A rack, characterized in that, include: Frame components; The first lock cylinder is located on one side of the frame assembly and has a first lock hole; The first locking assembly includes a first locking shaft, which is located on the other side of the frame assembly and is movably disposed along the axial direction of the first locking hole; The first locking shaft is used to be inserted into the first locking hole of the adjacent frame and is axially limited to the first locking cylinder of the adjacent frame.

2. The rack of claim 1, wherein, The first lock cylinder includes a first base and a first limiting member. The first base is disposed on one side of the frame assembly and forms a sliding cavity. The cavity wall of the sliding cavity is provided with the first lock hole. The first limiting member is slidably disposed in the sliding cavity perpendicular to the axis of the first lock hole and is provided with a snap-fit ​​hole that overlaps with the first lock hole.

3. The rack of claim 2, wherein, The first locking assembly further includes a second seat, which is located on the other side of the frame assembly and has a telescopic hole coaxial with the first lock hole. The first lock shaft passes through the telescopic hole and is movably disposed along the depth direction of the telescopic hole.

4. The rack of any one of claims 1 to 3, wherein, The frame also includes a positioning element. The frame assembly has a positioning hole on the same side as the first lock cylinder or the first locking assembly. The positioning element is located on the other side of the frame assembly along the axial direction of the positioning hole. And / or, the frame further includes a first magnetic attractor and a second magnetic attractor with opposite magnetic properties, the first magnetic attractor being spaced apart from the first lock cylinder or the first locking assembly on the same side, and the second magnetic attractor being located on the side of the frame assembly opposite to the first magnetic attractor.

5. The rack of any one of claims 1 to 3, wherein, The frame assembly includes two horizontal beams, two vertical beams, and a mounting beam. The ends of adjacent horizontal beams and vertical beams are connected sequentially to form a mounting opening. The mounting beam is located in the middle of the mounting opening. The first lock cylinder is located on one of the horizontal beams, and the first lock shaft is located on the other horizontal beam.

6. The rack of claim 5, wherein, The frame assembly also includes a connector that connects to adjacent crossbeams and vertical beams. One side of the connector has a receiving portion, and the receiving portion has a protruding butt joint or a recessed butt joint groove on the side opposite to the vertical beam.

7. The rack of claim 5, wherein, The frame also includes a second lock cylinder and a second locking assembly. The second lock cylinder is located on one side of the crossbeam near the mounting beam and has a second lock hole. The second locking assembly includes a second lock shaft, which is located on another crossbeam along the axial direction of the second lock hole and is rotatably mounted. A first limiting portion is protruding from the circumference of the second lock shaft.

8. A housing as claimed in claim 6 or 7, characterised in that The frame also includes a third lock cylinder and a third locking assembly. The third lock cylinder is disposed on one of the vertical beams and has a third lock hole through it. The third locking assembly includes a third lock shaft, which is disposed along the axial direction of the third lock hole in another vertical beam and is rotatably disposed. A second limiting part is protruding from the periphery of the third lock shaft.

9. An LED display device, characterized by, include: The frame as described in any one of claims 1 to 8; The carrier plate assembly is located on one side of the frame and has an array of light-transmitting holes through it; The LED beads are located on the side of the carrier plate assembly facing away from the frame.

10. An LED display device, characterized by, The LED display device comprises at least two LED display devices as claimed in claim 9, when the at least two LED display devices are spliced, the first lock shaft of the rack is inserted into the first lock hole of the adjacent rack and is axially limited in the first lock core of the adjacent rack.

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