LED display screen supporting and storing cart

Abstract

The utility model provides a light-emitting diode (LED) display screen supporting and storing cart, which relates to the technical field of display screen transportation and comprises a cart body, a plurality of LED display screens and a plurality of supports. The vehicle body is switched between an unfolded state and a folded state; a storage space is formed when the vehicle body is folded, and the storage space comprises a first space and a second space which are stacked; the vehicle body forms a supporting structure in an unfolded state; the plurality of LED display screens are switched between a splicing state and a storage state; the plurality of LED display screens are in a storage state and are longitudinally arranged in the first space side by side; the plurality of LED display screens form a display assembly in a splicing state; the plurality of brackets are switched between a splicing state and a storage state; the plurality of brackets are in a storage state and are transversely arranged in the second space; and the plurality of brackets form a bracket assembly in a splicing state. Through the embodiment provided by the invention, long-time carrying of the LED display screen by an assembling worker is avoided, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of display screen transportation, in particular to a LED display screen support and storage cart. Background Art

[0002] Current LED displays are often used in performances and outdoor settings, requiring them to be lightweight, easy to assemble and disassemble, convenient to splice, and wind-resistant. However, due to their weight, assembly workers must exert considerable effort to carry and assemble them, which is very inconvenient and results in low work efficiency. Utility Model Content

[0003] In view of the shortcomings of the existing methods, this application provides an LED display screen support and storage cart to solve the technical problems in the existing technology that the LED display screen is relatively heavy, and the assembly workers need a lot of strength to carry and assemble it, which is very inconvenient and leads to low work efficiency.

[0004] An embodiment of the present application provides an LED display screen support and storage cart, comprising a body, multiple LED display screens and multiple brackets; the body changes between an expanded state and a folded state; the body forms a storage space in the folded state, and the storage space includes a first space and a second space that are stacked; the body forms a support structure in the expanded state; the multiple LED display screens change between a spliced ​​state and a storage state; the multiple LED display screens are in the storage state and are arranged longitudinally side by side in the first space; the multiple LED display screens form a display assembly in the spliced ​​state, and the display assembly is used to support and connect with the body; the multiple brackets change between the spliced ​​state and the storage state; the multiple brackets are in the storage state and are arranged horizontally in the second space; the multiple brackets form a bracket assembly in the spliced ​​state, and the bracket assembly is used to support and connect with the body and the display assembly.

[0005] As an optional embodiment, the vehicle body includes a base, a first frame and a second frame; the first frame and the second frame are movably connected to the base; when the vehicle body is in a folded state, the first frame and the second frame are relatively spaced apart and arranged on the base, and the first frame and the second frame are connected to the base at an angle; the base, the first frame and the second frame are arranged to form the storage space; when the vehicle body is in an unfolded state, the first frame, the base and the second frame are connected end to end in sequence to form the table-shaped support structure.

[0006] As an optional embodiment, the bracket includes a first sub-frame and a second sub-frame; the multiple brackets are in a stored state, the first sub-frame and the second sub-frame are stacked, and the first sub-frame is locked and connected to the vehicle body; the multiple brackets are in a spliced ​​state, the first sub-frame and the second sub-frame are connected end to end, and the second sub-frame is supported and connected to the vehicle body.

[0007] As an optional embodiment, the first sub-frame has two connecting ends arranged opposite to each other, and both connecting ends of the first sub-frame are provided with a first locking piece, the first connecting end of the first sub-frame forms a first connecting protrusion, and the second connecting end of the first sub-frame forms a first connecting recess; the connecting end of the second sub-frame forms a second connecting protrusion for cooperating with the first connecting recess, and is provided with a second locking piece for locking and cooperating with the first locking piece; the multiple brackets are in a stored state, the first sub-frame is away from the first space, the second sub-frame is close to the first space, and the first sub-frame is locked and connected to the vehicle body through the first locking piece; the multiple brackets are in a spliced ​​state, the second connecting protrusion is inserted into the first connecting recess, and the first locking piece is locked and connected to the second locking piece.

[0008] As an optional embodiment, the first frame and the second frame both include a detachably connected frame body and an expansion frame; the expansion frame is connected to an end of the frame body away from the vehicle body, and the end of the expansion frame away from the frame body is provided with a third locking member for locking with the first locking member.

[0009] As an optional implementation, the expansion frame and the frame body are plugged in and bolted together.

[0010] As an optional embodiment, the LED display screen support storage cart also includes: a support leg, which is detachably connected to the first frame and the second frame, and the support leg is supported and connected to the first frame and the second frame when the vehicle body is in the unfolded state.

[0011] As an optional embodiment, the LED display screen supporting storage cart further includes: a locking rod, including a first rod and a second rod connected in a T-shape; locking holes are provided at the connection between the base and the first frame, and the second frame, and rod holes are provided at positions corresponding to the locking holes on both the first frame and the second frame, and a first card slot and a second card slot are formed on both the first frame and the second frame, which are connected to the rod holes and arranged side by side, the first card slot is away from the corresponding locking hole, and the second card slot is close to the corresponding locking hole.

[0012] As an optional implementation, the multiple LED display screens and the multiple brackets are all housed in the vehicle body, the multiple LED display screens are plugged into the vehicle body, and the brackets are plugged into the vehicle body; the multiple brackets are plugged into the vehicle body.

[0013] As an optional embodiment, the LED display screen support and storage cart further includes: a telescopic connecting member in the shape of a rod, the telescopic connecting member changes length along the axial direction, and is used to connect the LED display screen and the bracket.

[0014] The present application provides an LED display screen support and storage cart. The technical solution provided by the embodiments of the present application brings at least the following beneficial effects:

[0015] The vehicle body, multiple LED screens, and multiple brackets all have different configurations. Their coordination creates two primary operating states. The first is transport mode, where the vehicle body is collapsed and the multiple LED screens and brackets are stored within the vehicle's storage compartment. The second is display mode, where the vehicle body is expanded and the multiple LED screens and brackets are joined. Whether in transport or display mode, assembly workers move the LED screens by pushing the vehicle body, eliminating the need for lengthy handling and improving work efficiency.

[0016] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0018] Figure 1 This is a schematic diagram of the structure of an LED display screen support and storage cart provided in an embodiment of the present application when it is not deployed;

[0019] Figure 2 This is a schematic diagram of the structure of an LED display screen support storage cart provided in an embodiment of the present application after it is unfolded;

[0020] Figure 3 This is a schematic diagram of an LED display screen support storage cart provided in an embodiment of the present application, wherein the cart body is in an unfolded state;

[0021] Figure 4 A schematic diagram of the structure of an expansion frame in an LED display screen support and storage cart provided in an embodiment of the present application;

[0022] Figure 5 A schematic structural diagram of a first sub-frame in an LED display screen support and storage cart provided in an embodiment of the present application;

[0023] Figure 6 A schematic structural diagram of a second sub-frame in an LED display screen support and storage cart provided in an embodiment of the present application;

[0024] Figure 7 A schematic diagram of a bracket in a spliced ​​state in an LED display screen support storage cart provided in an embodiment of the present application;

[0025] Figure 8 A schematic diagram of the locking connection between a first locking member and a third locking member in an LED display screen support and storage cart provided in an embodiment of the present application;

[0026] Figure 9 A schematic diagram of the connection relationship between the locking rod, the base, and the first frame in an LED display screen support and storage cart provided in an embodiment of the present application;

[0027] Figure 10 A schematic diagram of the structure of a telescopic connector in an LED display screen support and storage cart provided in an embodiment of the present application;

[0028] Figure 11 A schematic structural diagram of a rod core in a LED display screen support storage cart provided in an embodiment of the present application;

[0029] Figure 12 This is a structural schematic diagram of an LED display screen support and storage cart provided in an embodiment of the present application.

[0030] Reference numerals and corresponding descriptions:

[0031] 1: Vehicle body; 11: Base; 12: First frame; 13: Second frame; 14: Third locking member; A: Frame body; B: Extension frame;

[0032] 2: LED display; 21: Locking hole.

[0033] 3: bracket; 31: first sub-frame; 32: second sub-frame; 33: first locking member;

[0034] 4: Support legs;

[0035] 5: Locking rod;

[0036] 6: telescopic connector; 61: rod core; 611: limiting groove; 62: rod sleeve; 621: threaded through hole; 63: locking rod; 64: clamping structure; 641: first curved wall; 642: threaded rod; 643: second curved wall; 644: nut structure; 645: notch; 65: limiting column. DETAILED DESCRIPTION

[0037] The present application is described in detail below. Examples of embodiments of the present application are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar components or components having the same or similar functions. In addition, if the detailed description of the known technology is not necessary for the features of the present application shown, it will be omitted. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0038] Those skilled in the art will understand that, unless otherwise stated, the singular forms "a," "an," "said," and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of this application refers to the presence of the stated features, elements, and / or components, but does not preclude the presence or addition of one or more other features, elements, components, and / or groups thereof. The term "and / or" used herein includes all or any unit and all combinations of one or more associated listed items.

[0039] like Figure 1-3 As shown, an embodiment of the present application provides an LED display screen support and storage cart, which includes a body 1, multiple LED display screens 2 and multiple brackets 3; the body 1 changes between an expanded state and a folded state; the body 1 forms a storage space in the folded state, and the storage space includes a first space and a second space that are stacked; the body 1 forms a supporting structure in the expanded state; multiple LED display screens 2 change between a spliced ​​state and a storage state; multiple LED display screens 2 are in the storage state and are arranged longitudinally side by side in the first space; multiple LED display screens 2 form a display assembly in the spliced ​​state, and the display assembly is used to support and connect with the body 1; multiple brackets 3 change between a spliced ​​state and a storage state; multiple brackets 3 are in the storage state and are arranged horizontally in the second space; multiple brackets 3 form a bracket 3 assembly in the spliced ​​state, and the bracket 3 assembly is used to support and connect with the body 1 and the display assembly.

[0040] The vehicle body 1, the multiple LED screens 2, and the multiple brackets 3 all have different configurations. Their coordination creates two main operating states. The first is the transport state, in which the vehicle body 1 is collapsed, and the multiple LED screens 2 and multiple brackets 3 are stored within the vehicle body 1's storage compartment. The second is the display state, in which the vehicle body 1 is expanded, and the multiple LED screens 2 and multiple brackets 3 are joined. In both the transport and display states, assemblers can move the LED screens 2 by pushing the vehicle body 1, eliminating the need for lengthy handling and improving work efficiency.

[0041] like Figure 1-3As shown, as an optional embodiment, the vehicle body 1 includes a base 11, a first frame 12 and a second frame 13; the first frame 12 and the second frame 13 are both movably connected to the base 11; the vehicle body 1 is in a folded state, the first frame 12 and the second frame 13 are relatively spaced apart and arranged on the base 11, and the first frame 12 and the second frame 13 are both connected to the base 11 at an angle; the base 11, the first frame 12 and the second frame 13 are enclosed to form a storage space; the vehicle body 1 is in an unfolded state, the first frame 12, the base 11 and the second frame 13 are connected end to end in sequence to form a table-shaped support structure.

[0042] Based on the previous embodiment, in this embodiment, the vehicle body 1 is positioned on a horizontal surface, with the first frame 12 serving as the left side frame and the second frame 13 serving as the right side frame. When the vehicle body 1 is folded, the first and second frames 12, 13 are both vertically positioned and, together with the horizontally positioned base 11, form a semi-enclosed storage space. When the vehicle body 1 is deployed, the first and second frames 12, 13 rotate relative to the base 11 to a horizontal surface, forming a support platform.

[0043] like Figure 1-3 As shown in Figures 5-7, as an optional embodiment, the bracket 3 includes a first sub-frame 31 and a second sub-frame 32; multiple brackets 3 are in a stored state, the first sub-frame 31 and the second sub-frame 32 are stacked, and the first sub-frame 31 is locked and connected to the vehicle body 1; multiple brackets 3 are in a spliced ​​state, the first sub-frame 31 and the second sub-frame 32 are connected end to end, and the second sub-frame 32 is supported and connected to the vehicle body 1.

[0044] Based on the previous embodiment, in this embodiment, the brackets 3 include two different structural types, namely, a first sub-frame 31 and a second sub-frame 32. When the multiple brackets 3 are in the stored state, the first sub-frame 31 and the second sub-frame 32 are both arranged horizontally, with the first sub-frame 31 arranged above the second sub-frame 32. When the multiple brackets 3 are in the spliced ​​state, the first sub-frame 31 and the second sub-frame 32 are both arranged vertically, with the first sub-frame 31 arranged above the second sub-frame 32, and the bottom of the second sub-frame 32 is bolted to the base 11 of the vehicle body 1.

[0045] As an optional embodiment, the first sub-frame 31 has two connecting ends arranged opposite to each other, and both connecting ends of the first sub-frame 31 are provided with a first locking piece 33, the first connecting end of the first sub-frame 31 is formed with a first connecting protrusion, and the second connecting end of the first sub-frame 31 is formed with a first connecting recess; the connecting end of the second sub-frame 32 is formed with a second connecting protrusion for cooperating with the first connecting recess, and is provided with a second locking piece for locking and cooperating with the first locking piece 33; multiple brackets 3 are in a stored state, the first sub-frame 31 is away from the first space, the second sub-frame 32 is close to the first space, and the first sub-frame 31 is locked and connected to the vehicle body 1 through the first locking piece 33; multiple brackets 3 are in a spliced ​​state, the second connecting protrusion is inserted into the first connecting recess, and the first locking piece 33 is locked and connected with the second locking piece.

[0046] Based on the above embodiment, in this embodiment, the first sub-rack 31 and the second sub-rack 32 are both rectangular. The connecting end of the first sub-rack 31 and the second sub-rack 32 is the wide end of the rectangle.

[0047] The first sub-frame 31 and the second sub-frame 32 each include two first pillars and two second pillars, which are connected end to end. The first pillars are longer than the second pillars. A reinforcing plate is provided between the two first pillars. A first insertion hole is defined along the thickness of the reinforcing plate. The first insertion hole is used to connect the multiple LED screens 2 and the multiple brackets 3 to the LED screens 2 when they are in the stored state. The second pillars are provided with second insertion holes. The second insertion holes are used to connect the multiple brackets 3 to the first frame 12 and the second frame 13 when they are in the stored state.

[0048] The first sub-frame 31 and the second sub-frame 32 differ in that the first sub-frame 31 is provided with first locking members 33 near both connection ends, while the second sub-frame 32 is provided with a second locking member at one end. The first locking members 33 are used to lock the first sub-frame 31 with the first frame 12 and the second frame 13 when the multiple brackets 3 are in the stored state; the first locking members 33 and the second locking members are used to lock the first sub-frame 31 with the second sub-frame 32 when the multiple brackets 3 are in the spliced ​​state.

[0049] like Figure 1-4 As shown in Figure 8, as an optional embodiment, the first frame 12 and the second frame 13 both include a detachably connected frame body A and an expansion frame B; the expansion frame B is connected to the end of the frame body A away from the vehicle body 1, and the end of the expansion frame B away from the frame body A is provided with a third locking member 14 for locking with the first locking member 33.

[0050] Based on the above embodiments, in this embodiment, multiple LED display screens 2 and multiple brackets 3 are in a storage state and stored in the storage space of the vehicle body 1. The height of the first frame 12 and the second frame 13 is adapted to the top of the multiple brackets 3, and the top of the first frame 12 and the second frame 13 are both provided with a third locking member 14.

[0051] The vehicle body 1 is in the unfolded state, the bottom of the display assembly is fixedly connected to the base 11, and the supporting structure formed by the flat first frame 12, the base 11 and the second frame 13 may exceed the bottom edge length of the display assembly in length. The detachable expansion frame B can achieve alignment of the above two in length.

[0052] Optionally, the second locking member and the third locking member 14 have the same structure.

[0053] As an optional implementation, the expansion frame B and the frame body A are plugged in and bolted together.

[0054] Based on the aforementioned embodiments, in this embodiment, both the expansion frame B and the frame body A include side beams and end beams connected end to end. When the vehicle body 1 is in the stowed state, the side beams are arranged vertically and the end beams are arranged horizontally. The side beams of the expansion frame B and the side beams of the frame body A are connected by a concave-convex fit. Optionally, one of the side beams of the expansion frame B and the side beams of the frame body A is provided with a convex portion and the other is provided with a concave portion. Bolt holes are provided in the end beams of both the expansion frame B and the frame body A, and bolts are passed through the aforementioned bolt holes to achieve a bolt connection between the expansion frame B and the frame body A.

[0055] like Figure 1-2 As shown, as an optional embodiment, the LED display screen support storage cart also includes a support leg 4, which is detachably connected to the first frame 12 and the second frame 13. The support leg 4 is supported and connected to the first frame 12 and the second frame 13 when the vehicle body 1 is in the unfolded state.

[0056] Based on the foregoing embodiments, in this embodiment, the vehicle body 1 is in the unfolding stage, and the first frame 12 and the second frame 13 are both arranged horizontally. Since rollers are provided at the bottom of the base 11, the rollers have a certain height, which causes the first frame 12 and the second frame 13 to be suspended in the air. By providing the support legs 4, the first frame 12 and the second frame 13 form a support with the ground, which can improve the support strength of the vehicle body 1.

[0057] like Figure 9As shown, as an optional embodiment, the LED display screen supporting storage cart further includes a locking rod 5, which includes a first rod and a second rod connected in a T-shape; locking holes are provided at the connection between the base 11 and the first frame 12, and the second frame 13, and rod holes are provided at the positions corresponding to the locking holes in both the first frame 12 and the second frame 13, and the first frame 12 and the second frame 13 are both formed with a first card slot and a second card slot connected to the rod holes and arranged side by side, the first card slot is away from the corresponding lock hole, and the second card slot is close to the corresponding lock hole.

[0058] Based on the above embodiments, in this embodiment, the lock hole and the rod hole correspond to each other, and the first rod of the lock rod 5 can be extended into or out of the lock hole. The lock rod 5 is extended into the lock hole to realize that the corresponding frame and the base 11 remain relatively fixed, and the vehicle body 1 is in the storage stage, which can ensure that the frame and the base 11 are vertical; the lock rod 5 is withdrawn from the lock hole, and the corresponding frame is separated from the base 11, and the corresponding frame and the base 11 can move relative to each other; after the lock rod 5 is withdrawn from the lock hole, the vehicle body 1 can be transformed from the storage stage to the unfolded state.

[0059] As an optional implementation, the multiple LED display screens 2 and the multiple brackets 3 are all housed in the vehicle body 1 , and the multiple LED display screens 2 are plugged into the vehicle body 1 , as well as the brackets 3 ; and the multiple brackets 3 are plugged into the vehicle body 1 .

[0060] Based on the previous embodiment, in this embodiment, the base 11 is plate-shaped, with rollers provided at the bottom of the base 11 and a limiting protrusion provided at the top of the base 11 for plugging into the limiting hole at the bottom of the LED display 2. The LED display 2 is provided with a latch for plugging into other LED displays 2. When multiple LED displays 2 are stored in the storage space, the latch is vertically arranged and protrudes from the top of the LED display 2, for plugging into the first socket of the bracket 3.

[0061] The first frame 12 and the second frame 13 are provided with plug-in protrusions. When the vehicle body 1 is in the storage state, the plug-in protrusions of the first frame 12 and the second frame 13 extend toward each other, that is, extend horizontally close to each other, and the plug-in protrusions are plugged into and matched with the second sockets of the aforementioned bracket 3.

[0062] like Figure 2 , 10, 11 and 12, as an optional embodiment, the LED display screen support storage cart also includes a telescopic connector 6, which is rod-shaped and changes length along the axial direction for connecting the LED display screen 2 and the bracket 3.

[0063] Based on the above embodiments, in this embodiment, the display assembly and the bracket 3 assembly are both vertically fixed to the vehicle body 1, there is a gap between the display assembly and the bracket 3 assembly, and the telescopic connecting member 6 is provided on the display assembly and the bracket 3 assembly to support the connection between the display assembly and the bracket 3 assembly to increase the stability of the display assembly.

[0064] like Figure 10 As shown, in some embodiments, the telescopic connector 6 mainly includes a rod core 61, a rod sleeve 62, a locking rod 63 and a clamping structure 64. The rod sleeve 62 is partially sleeved on the outside of the rod core 61, and the rod sleeve 62 moves axially toward or away from the rod core 61 to adjust the length of the rod core 61 extending out of the rod sleeve 62; the locking rod 63 is connected to the end of the rod sleeve 62 away from the rod core 61, and the end of the locking rod 63 away from the rod sleeve 62 is formed with a limiting protrusion protruding from the side wall, which is used to lock the connection with the LED display screen 2; the clamping structure 64 is connected to the end of the rod core 61 away from the rod sleeve 62, and the clamping structure 64 is used to connect to the bracket 3.

[0065] In some embodiments, the rod sleeve 62 has a hollow structure, and the rod sleeve 62 is sleeved on the outside of the rod core 61 through the hollow structure; the side wall of the rod core 61 is provided with a limiting groove 611 extending axially, and the limiting groove 611 is recessed radially inward; the sleeve wall of the rod sleeve 62 is provided with a threaded through hole 21, and the through hole is connected to the hollow structure, and the bolt passes through the threaded through hole 21 and extends into the limiting groove 611 to limit the relative position of the rod sleeve 62 and the rod core 61.

[0066] Based on the previous embodiment, in this embodiment, the rod core 61 moves axially away from or toward the rod sleeve 62. When the rod core 61 moves to the point where the bolt contacts the end of the limiting groove 611, the rod core 61 reaches its maximum movement distance in the corresponding direction. After the relative position of the rod core 61 and the rod sleeve 62 is adjusted, the screw is screwed so that the end of the screw extending into the limiting groove 611 contacts the limiting groove 611, thereby fixing the relative position of the rod core 61 and the rod sleeve 62.

[0067] In some embodiments, a fixing through hole is opened at one end of the locking rod 63 away from the rod sleeve 62, and a limiting column 65 is fixed in the fixing through hole. The axial direction of the limiting column 65 is perpendicular to the axial direction of the locking rod 63, and both ends of the limiting column 65 protrude from the locking rod 63.

[0068] Based on the above embodiment, in this embodiment, the axial direction of the fixing through hole is arranged along the radial direction of the locking rod 63. The vertical limiting column 65 and the locking rod 63 form a stable connection structure to ensure structural strength.

[0069] like Figure 10As shown, in some embodiments, the clamping structure 64 includes a first curved wall 641, a threaded rod 642, a second curved wall 643, and a nut structure 644. The first curved wall 641 is connected to the rod core 61; the threaded rod 642 is rotatably connected to one end of the first curved wall 641; the first end of the second curved wall 643 is rotatably connected to the other end of the first curved wall 641; the second end of the second curved wall 643 is used to lock and cooperate with the threaded rod 642; the first curved wall 641, the second curved wall 643, and the threaded rod 642 are surrounded to form a clamping ring; the nut structure 644 is sleeved on the outside of the threaded rod 642 to tighten the clamping ring.

[0070] Based on the aforementioned embodiment, in this embodiment, a threaded section is provided in the middle portion of the convex side of the first curved wall 641, which is used to achieve a threaded connection between the first curved wall 641 and the rod core 61. The recessed portions of the first curved wall 641 and the second curved wall 643 correspond to each other. The first curved wall 641, the second curved wall 643, and the threaded rod 642 form a clamping ring, the interior of which is used to accommodate a space for a clamped object. The nut structure 644 moves along the threaded rod 642 toward the first curved wall 641, driving the second end of the second curved wall 643 toward one end of the first curved wall 641, thereby reducing the space for the clamped object and ensuring a tighter connection between the clamping ring and the clamped object, providing a more secure clamping.

[0071] like Figure 10 As shown, in some embodiments, a notch 645 is formed at the second end of the second curved wall 643 , and the threaded rod 642 extends into the notch 645 ; the nut structure 644 moves along one end of the threaded rod 642 close to the first curved wall 641 to tighten the clamp ring.

[0072] Based on the previous embodiment, in this embodiment, the nut structure 644 moves along the threaded rod 642 toward the first curved wall 641. The nut structure 644 contacts the edge of the notch 645, which acts as a fulcrum to drive the second end of the second curved wall 643 to move. The nut structure 644 moves along the threaded rod 642 away from the first curved wall 641, creating a clearance space. The second end of the second curved wall 643 can move away from the first curved wall 641, loosening the clamp ring.

[0073] like Figure 12 As shown, in some embodiments, a locking hole 21 is formed on the side of the LED display 2 opposite to the display side, and the locking hole 21 is elliptical; the limiting protrusion of the telescopic connecting member 6 extends into the locking hole 21 along the long axis of the locking hole 21, and the telescopic connecting member 6 is rotated, and the limiting protrusion of the telescopic connecting member 6 abuts against the edge of the locking hole 21 to form a locking connection.

[0074] Based on the aforementioned embodiment, in this embodiment, the locking hole 21 is recessed toward the display side. It should be noted that the elliptical shape of the locking hole 21 does not necessarily mean it must be an elliptical shape, and it can be an approximately irregularly shaped hole. The limiting protrusion of the telescopic connector 6 extends into the locking hole 21 along the long axis of the locking hole 21 and is rotated clockwise or counterclockwise to an appropriate position. For example, along the axial projection of the locking rod 63, the limiting protrusion of the telescopic connector 6 and the edge of the locking hole 21 overlap. In this way, when the locking rod 63 moves outward, the limiting protrusion abuts against the edge of the locking hole 21, and the limiting protrusion is stuck in the locking hole 21 to lock the telescopic connector 6 and the LED display screen 2, ensuring that the two maintain a fixed relative position.

[0075] In some embodiments, a limiting portion is provided in the locking hole 21 and close to the edge of the locking hole 21 , for limiting the relative position of the limiting protrusion and the locking hole 21 in the rotation direction of the telescopic connector 6 .

[0076] With the above solution, when the telescopic connector 6 rotates to abut against the limiting portion, it indicates that the telescopic connector 6 has rotated to the optimal position, ie, the optimal position where the limiting protrusion is locked with the locking hole 21 .

[0077] The terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0078] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0079] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0080] The above description is only part of the implementation methods of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. An LED display screen support and storage cart, characterized in that: It includes a vehicle body (1), a plurality of LED display screens (2) and a plurality of brackets (3); The vehicle body (1) changes between an expanded state and a folded state; the vehicle body (1) forms a storage space in the folded state, the storage space comprising a first space and a second space stacked together; the vehicle body (1) forms a support structure in the expanded state; The plurality of LED display screens (2) are transformed between a splicing state and a storage state; the plurality of LED display screens (2) are in the storage state and are arranged side by side in the longitudinal direction in the first space; The plurality of LED display screens (2) form a display assembly in a spliced ​​state, and the display assembly is used for supporting and connecting with the vehicle body (1); The multiple brackets (3) are transformed between a spliced ​​state and a stored state; the multiple brackets (3) are in the stored state and are arranged transversely in the second space; the multiple brackets (3) form a bracket (3) assembly in the spliced ​​state, and the bracket (3) assembly is used for supporting and connecting with the vehicle body (1) and the display assembly.

2. The LED display screen support and storage cart according to claim 1, characterized in that: The vehicle body (1) comprises a base (11), a first frame (12) and a second frame (13); the first frame (12) and the second frame (13) are both movably connected to the base (11); The vehicle body (1) is in a folded state, the first frame (12) and the second frame (13) are arranged on the base (11) at a relative interval, and the first frame (12) and the second frame (13) are connected to the base (11) at an angle; the base (11), the first frame (12) and the second frame (13) are arranged to form the storage space; The vehicle body (1) is in an unfolded state, and the first frame (12), the base (11) and the second frame (13) are sequentially connected end to end to form the support structure in a platform shape.

3. The LED display screen support and storage cart according to claim 2, characterized in that: The bracket (3) comprises a first sub-rack (31) and a second sub-rack (32); The multiple brackets (3) are in a stored state, the first sub-frame (31) and the second sub-frame (32) are stacked, and the first sub-frame (31) is locked and connected to the vehicle body (1); The multiple brackets (3) are in a spliced ​​state, the first sub-frame (31) and the second sub-frame (32) are connected end to end, and the second sub-frame (32) is supported and connected to the vehicle body (1).

4. The LED display screen support and storage cart according to claim 3, characterized in that: The first sub-frame (31) has two connecting ends arranged opposite to each other, both connecting ends of the first sub-frame (31) are provided with a first locking member (33), the first connecting end of the first sub-frame (31) is formed with a first connecting protrusion, and the second connecting end of the first sub-frame (31) is formed with a first connecting recess; The connecting end of the second sub-frame (32) is formed with a second connecting protrusion for cooperating with the first connecting recess, and is provided with a second locking member for lockingly cooperating with the first locking member (33); The multiple brackets (3) are in a stored state, the first sub-frame (31) is away from the first space, the second sub-frame (32) is close to the first space, and the first sub-frame (31) is locked and connected to the vehicle body (1) via the first locking member (33); The plurality of brackets (3) are in a spliced ​​state, the second connection protrusion is inserted into the first connection recess, and the first locking member (33) is locked and connected with the second locking member.

5. The LED display screen support and storage cart according to claim 4, characterized in that: The first frame (12) and the second frame (13) both include a detachably connected frame body (A) and an expansion frame (B); The expansion frame (B) is connected to an end of the frame body (A) away from the vehicle body (1), and a third locking member (14) is provided at the end of the expansion frame (B) away from the frame body (A) for locking with the first locking member (33).

6. The LED display screen support and storage cart according to claim 5, characterized in that: The expansion frame (B) and the frame body (A) are plug-in and bolt-connected.

7. The LED display screen support and storage cart according to claim 2, characterized in that: Also includes: The supporting legs (4) are detachably connected to the first frame (12) and the second frame (13); when the vehicle body (1) is in an unfolded state, the supporting legs (4) are supported and connected to the first frame (12) and the second frame (13).

8. The LED display screen support and storage cart according to claim 2, characterized in that: Also includes: A locking rod (5) comprises a first rod and a second rod connected in a T-shape; The base (11) and the first frame (12), as well as the second frame (13), are provided with lock holes at their connections. The first frame (12) and the second frame (13) are both provided with rod holes corresponding to the lock holes. The first frame (12) and the second frame (13) are both formed with a first card slot and a second card slot that are connected to the rod holes and arranged side by side. The first card slot is far away from the corresponding lock hole, and the second card slot is close to the corresponding lock hole.

9. The LED display screen support and storage cart according to claim 1, characterized in that: The multiple LED display screens (2) and the multiple brackets (3) are all housed in the vehicle body (1); the multiple LED display screens (2) are plugged into the vehicle body (1) and the brackets (3); and the multiple brackets (3) are plugged into the vehicle body (1).

10. The LED display screen support and storage cart according to any one of claims 1 to 9, characterized in that: Also includes: The telescopic connecting member (6) is in the shape of a rod and changes length along the axial direction, and is used to connect the LED display screen (2) and the bracket (3).

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