LED display

Abstract

A LED display screen, which includes at least two LED boxes, and the splicing lock includes a handle piece, a grip piece, a hook lock piece with a rotating shaft and a connecting piece for fixing to one of the LED boxes, the handle piece is provided with a first axial hole and a second axial hole, the connecting piece is rotatably connected in the first axial hole, the rotating shaft is rotatably connected in the second axial hole, and the grip piece is embedded in the handle piece to limit the rotation of the rotating shaft relative to the second axial hole; the first axial hole and the second axial hole have a first distance in the first direction and a second distance in the second direction, the first direction and the second direction are perpendicular to each other, when the hook lock piece is connected to another LED box, the handle piece drives the grip piece to rotate around the first axial hole, and the clamping structure on the grip piece is clamped with the rotating shaft.

Description

Technical Field

[0001] The present invention relates to the field of LED display screens, and in particular to an LED display screen. Background Art

[0002] Current LED display screens are generally composed of multiple display screen units or LED cabinets. In order to expand the scope of application of the product, LED cabinet splicing must achieve both plane splicing and three-dimensional splicing.

[0003] With the advancement of technology and the expansion of application fields, especially for LED displays used in the rental field, their operation is required to be simple, fast, stable and reliable. However, the existing LED boxes require the cooperation of multiple people, one to assist in straightening the two adjacent LED boxes, and one to use splicing tools to bolt or other splicing structures. It is relatively labor-intensive and even in a relatively small installation space, it is impossible to meet the requirement of multiple people standing at the same time, which brings inconvenience to the splicing work and thus affects the splicing efficiency. Summary of the Invention

[0004] The present invention provides an LED display screen that can be operated by only one person, has a simple structure, is easy to operate, has high splicing efficiency, reduces labor costs, and has good market application value.

[0005] The present invention provides an LED display screen, comprising a splicing lock and at least two LED boxes, each of which comprises a frame and a light board, the light board being fixed on the frame, and two adjacent frames being fixedly connected by the splicing lock;

[0006] The splicing lock includes a handle member, a grip member, a hook lock member with a rotating shaft, and a connecting member provided with at least one threaded hole. The handle member is provided with a first axial hole and a second axial hole. The connecting member is rotatably connected in the first axial hole and fixed to one of the LED boxes through the threaded hole. The rotating shaft is rotatably connected in the second axial hole. The grip member is embedded in the handle member to limit the rotation of the rotating shaft relative to the second axial hole.

[0007] The first axial hole and the second axial hole have a first distance in the first direction and a second distance in the second direction, and the first direction and the second direction are perpendicular to each other. When the hook lock is connected to another LED box, the handle drives the gripping member to rotate around the first axial hole, and the clamping structure on the gripping member is clamped with the rotating shaft, so that two adjacent LED boxes can be connected at the position of the connecting member.

[0008] In an LED display screen of one embodiment of the present invention, the handle member includes a connecting shaft and a handle with an installation cavity. The connecting member is provided with a connecting hole. The connecting shaft is rotatably connected in the first shaft hole and the connecting hole. The grip member is accommodated in the installation cavity and can rotate around the axis of the connecting shaft relative to the connecting member.

[0009] In an LED display screen of one embodiment of the present invention, the gripping member has a waist-shaped hole and a snap-fit ​​structure, at least two snap-fit ​​structures are provided on the rotating shaft, the waist-shaped hole extends toward the snap-fit ​​structure, the connecting shaft is passed through the waist-shaped hole, and the snap-fit ​​structure is snap-fitted with the snap-fit ​​structure.

[0010] In an LED display screen of one embodiment of the present invention, the gripping member includes a limit block and a gripping block, the gripping block is connected to the limit block and elastically connected to the handle, the limit block is provided with an inner concave bevel groove in the waist-shaped hole, and the snap-fit ​​structure is formed on a protrusion at a corner of the inner concave bevel groove.

[0011] In an LED display screen according to an embodiment of the present invention, a through-hole structure is provided on the limiting block, the snap-fit ​​structure is arranged outside the through-hole structure, and the pointed end of the snap-fit ​​structure is located on an extension line of the diameter of the through-hole structure.

[0012] In the LED display screen of one embodiment of the present invention, the limiting block is provided with a claw structure for being clamped on the LED box connected to the connecting piece.

[0013] In the LED display screen of one embodiment of the present invention, the splicing lock further includes a pressure spring, one end of the pressure spring abuts against the gripping block, and the other end of the pressure spring abuts against the handle.

[0014] In the LED display screen of one embodiment of the present invention, the handle member further includes a return spring, which is mounted on the handle, and one end of the return spring abuts against the handle, and the other end of the return spring abuts against the rotating shaft.

[0015] In an LED display screen of one embodiment of the present invention, the handle includes a body and a cover plate, a rotation groove is formed on the body, the cover plate covers the rotation groove to form the second axis hole, and the rotating shaft is vertically connected to the U-shaped hook of the hook lock.

[0016] In an embodiment of the present invention, the LED display screen further includes a fixing block, the rotating shaft is provided with a mounting through hole, and the U-shaped hook of the hook lock member is mounted in the mounting through hole through the fixing block.

[0017] The technical solution provided by the embodiments of the present application may include the following beneficial effects: The present application designs an LED display screen, including a handle member, a grip member, a hook lock member and a connecting member. The handle member is provided with a first axial hole and a second axial hole. The connecting member is rotatably connected in the first axial hole, and the hook lock member is rotatably installed in the second axial hole through a rotating shaft. When two adjacent LED boxes are spliced, the connecting member is fixed on one of the LED boxes, and the handle member drives the hook lock member to connect with the other LED box, so that the two LED boxes can be fastened together under the rotation of the handle member. The structure is simple, easy to operate, and the splicing efficiency is high; at the same time, it also reduces labor costs and has good market application value.

[0018] 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

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a schematic diagram of the structure of an LED display screen provided by an embodiment of the present application;

[0021] Figure 2 yes Figure 1 A schematic diagram of the structure of the framework in ;

[0022] Figure 3 yes Figure 1 A schematic diagram of the structure of the splicing lock;

[0023] Figure 4 yes Figure 3 Schematic diagram of the installation of the splicing lock;

[0024] Figure 5 This is a schematic diagram of another state of the splicing lock buckle provided in one embodiment of the present application;

[0025] Figure 6 yes Figure 5 Schematic diagram of the installation of the splicing lock;

[0026] Figure 7 yes Figure 5 A schematic diagram of the structure of the splicing lock at another angle;

[0027] Figure 8 yes Figure 5 A schematic diagram of the structure of the splicing lock at another angle;

[0028] Figure 9 yes Figure 5 A cross-sectional schematic diagram of the splicing lock in FIG;

[0029] Figure 10 yes Figure 5 A schematic cross-sectional view of the splicing lock at another angle;

[0030] Figure 11 yes Figure 5 Exploded diagram of the splicing lock in ;

[0031] Figure 12 yes Figure 11 A schematic diagram of the structure of the handle in FIG;

[0032] Figure 13 yes Figure 11 Schematic diagram of the structure of the cover plate;

[0033] Figure 14 yes Figure 11 Schematic diagram of the structure of the rotating shaft;

[0034] Figure 15 yes Figure 11 Schematic diagram of the structure of the limit block. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0036] It should also be understood that the terms used in this specification of the present invention are only for the purpose of describing specific realities. In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting this application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of this application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0037] The following describes some embodiments of the present application in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features therein may be combined with each other.

[0038] like Figures 1 to 15 As shown, the present application provides an LED display screen, including a splicing lock 100 and at least two LED boxes, each LED box including a frame 200 and a light board, the light board is fixed on the frame, and two adjacent frames are fixedly connected by a splicing lock, so as to realize the rapid splicing of the LED display screen, and the splicing is fast, and the operation can be completed by only one person, the structure is simple and tight, easy to operate, the splicing efficiency is high, the labor cost is reduced, and it has good market application value.

[0039] Exemplarily, the splicing lock 100 includes a handle 10, a grip 20, a connector 30, and a hook 40. The handle 10 is provided with a first axial hole 111 and a second axial hole 112 at intervals. The connector 30 is rotatably connected to the first axial hole 111 for securing to one of at least two LED housings. The hook 40 has a rotational axis 41 that is rotatably connected to the second axial hole 112 for connecting to another adjacent LED housing. In this embodiment, the grip is embedded in the handle to limit the rotation of the rotational axis 41 relative to the second axial hole 112, allowing the two adjacent LED housings to be spliced ​​and secured together using the splicing lock, resulting in not only rapid splicing but also a secure structure.

[0040] In an optional embodiment, the first axial hole 111 and the second axial hole 112 have a first distance L1 in the first direction and a second distance L2 in the second direction, wherein the first direction and the second direction are perpendicular to each other. When the hook lock member 40 is connected to another LED box, the handle member 10 can drive the grip member 20 to rotate around the first axial hole 111, so that the snap-fit ​​structure 212 on the grip member 20 is snap-fitted to the rotating axis to ensure that two adjacent LED boxes can be connected at the position of the connecting member 30.

[0041] Specifically, the hook lock member 40 includes a U-shaped hook, which is connected to the rotating shaft 41 and can rotate around the axis of the rotating shaft 41. The connecting member 30 is provided with at least one threaded hole 31, which is used to be fixedly connected to the frame of the LED box. The U-shaped hook rotates around the axis of the rotating shaft 41 and is sleeved onto the frame of another adjacent LED box. The handle member 10 then drives the rotating shaft 41 and the grip member 20 to rotate around the first axis hole 111, so that the frames of the two LED boxes can be tightly spliced ​​together. The grip member 20 can limit the rotation angle of the rotating shaft 41, so that the U-shaped hook can remain stationary relative to the handle member 10 under the restraining action of the grip member 20. Only when the handle member 10 drives the grip member 20 to rotate relative to the rotating shaft 41, thereby releasing the engagement between the rotating shaft 41 and the grip member 20, can the U-shaped hook rotate relative to the handle member 10, thereby unlocking the two adjacent LED boxes.

[0042] In an optional embodiment, the handle member 10 includes a connecting shaft 12 and a handle, wherein the handle has an installation cavity 114, and a connecting hole is provided on the connecting member 30. The connecting shaft 12 is rotatably connected in the first axis hole 111 and the connecting hole. The gripping member 20 is accommodated in the installation cavity 114 and can rotate relative to the connecting member 30 around the axis of the connecting shaft 12, so that the handle member 10 can drive the gripping member 20 and the hook lock member 40 to rotate around the axis of the connecting shaft 12. Then, when the handle member 10 and the gripping member 20 are rotated to a certain angle, the handle member 10 drives the gripping member 20 to rotate around the axis of the rotating shaft 41, so that the gripping member 20 can tighten the connecting shaft 12 while being clamped with the rotating shaft 41 by the through-hole clamping structure 212, thereby fixing the relative position between the hook lock member 40 and the connecting member 30, thereby splicing two adjacent LED boxes together, and the splicing position of the two LED boxes is at the position where the connecting member 30 and the frame of the LED box are fixed.

[0043] In an optional embodiment, the gripping member 20 has a waist-shaped hole 211 and a snap-fit ​​structure 212, wherein at least two snap-fit ​​structures 411 are provided on the rotating shaft 41, and the waist-shaped hole 211 extends toward the snap-fit ​​structure 212, and the connecting shaft 12 is passed through the waist-shaped hole 211 and the first shaft hole 111. During the rotation of the gripping member 20 relative to the rotating shaft 41, the snap-fit ​​structure 212 can be snapped with the snap-fit ​​structure 411 to achieve relative fixation between the rotating shaft 41 and the handle member 10, or the connecting member 30 is in cooperation with the connecting shaft 12 and the waist-shaped hole 211, and the snap-fit ​​structure 212 is in cooperation with the snap-fit ​​structure 411 to achieve relative fixation between the connecting member 30 and the rotating shaft 41, that is, when the handle member 10 is not subjected to external force, the U-shaped hook cannot detach from the other LED box of the two adjacent LED boxes by itself, and the connecting member 30 is connected to one of the two adjacent LED boxes through the screw hole, thereby achieving a fastening connection between the two LED boxes.

[0044] In an optional embodiment, the grip member 20 includes a stopper 21 and a gripper block, the gripper block being connected to the stopper 21 and elastically connected to the handle. The stopper 21 has a concave groove 215 formed in the waist-shaped hole, and the engaging structure 212 is formed on a corner protrusion of the concave groove 215, resulting in a simple structure and easy processing.

[0045] In an optional embodiment, a through hole structure 213 is provided on the limit block 21, and the clamping structure 212 is arranged on the outside of the through hole structure 213, and the pointed end of the clamping structure 212 is located on the extension line of the diameter of the through hole structure 213, so that the through hole structure 213 can provide elastic support for the deformation of the clamping structure 212, ensuring that the clamping structure 212 can tightly adhere to the outside of the rotating shaft 41, and can be clamped in the clamping slot structure 411 at the position of the clamping slot structure 411, and when the clamping structure 212 is disengaged from the clamping slot structure 411, the elastic support can be restored, and plastic deformation is not easy to occur.

[0046] In an optional embodiment, a claw structure 214 is provided on the limiting block 21 , and the claw structure 214 is used to be clamped on the LED box connected to the connecting member 30 .

[0047] Exemplarily, the LED box includes a first LED box and a second LED box. When the splicing lock is fixed to the first LED box through the connecting piece 30, the handle piece 10 and the grip piece 20 can rotate around the connecting axis 12 relative to the connecting piece 30, and the U-shaped hook can rotate around the handle piece 10 through the rotating shaft 41. After the U-shaped hook rotates relative to the handle piece 10 and is connected to the second LED box, the handle piece 10 drives the grip piece 20 and the U-shaped hook to rotate around the connecting axis 12. Similarly, in the process of the handle piece 10 driving the grip piece 20 to rotate, the U-shaped hook will also rotate relative to the handle piece 10 and the grip piece 20. When the handle piece 10 drives the grip piece 20 to rotate to a certain angle, the clamping structure 212 is clamped with the slot structure 411 to limit the rotation of the rotating shaft 41 relative to the handle piece 10. At this time, the claw structure 214 is also clamped on the outer frame hook body 201 of the first LED box to ensure that the handle piece 10 can be stationary relative to the first LED box without being affected by external force, and there will be no problem of arbitrary rotation.

[0048] In an optional embodiment, the splicing lock 100 also includes a pressure spring 60, one end of the pressure spring 60 abuts against the grip block, and the other end of the pressure spring 60 abuts against the handle, so that the engagement between the clamping structure 212 and the slot structure 411 is more stable. At the same time, it is necessary to press the grip block, that is, the limit block 21 moves along the extension direction of the waist-shaped hole 211 through the connecting shaft 12 to release the engagement between the clamping structure 212 and the slot structure 411, so that the rotating shaft 41 can be rotated around the handle piece 10 again to release the splicing between the two LED boxes. After the above technical solution is adopted, the fitting gap between the two LED boxes can also be eliminated, so that the two LED boxes are locked tighter and the splicing accuracy is higher.

[0049] Exemplarily, the gripper block is provided with a pressure spring mounting slot, with a spring connecting post extending from the bottom of the slot toward the slot. One end of a pressure spring 60 is mounted on the spring connecting post, while the other end of the pressure spring 60 abuts the bottom of the mounting cavity 114, allowing the gripper block to retract into the mounting cavity 114 when pressed and extend out of the mounting cavity 114 when not pressed.

[0050] In an optional embodiment, the gripping block is connected to the limit block 21 by a first confidential screw connection 22, wherein a screw through hole is provided on the handle, and the screw through hole has a first movable space along the extension direction of the waist-shaped hole 211, so that the gripping block can move along the extension direction of the screw through hole under the action of the pressure spring 60, that is, when the gripping block is pressed, the gripping block is located at the bottom of the screw through hole, and after the gripping block is loosened, the gripping block is located at the top of the screw through hole, thereby realizing the engagement between the clamping structure 212 and the slot structure 411 or releasing the engagement between the clamping structure 212 and the slot structure 411.

[0051] In an optional embodiment, the splicing lock 100 also includes a reset spring 50, wherein the reset spring 50 is installed on the handle, and one end of the reset spring 50 abuts against the handle, and the other end of the reset spring 50 abuts against the rotating shaft 41, which is used to drive the rotating shaft 41 to rebound and reset, so that the U-shaped hook can be reset.

[0052] In an optional embodiment, the handle includes a body 11 and a cover plate 13 , wherein a rotation groove is formed on the body 11 , the cover plate 13 covers the rotation groove to form a second axial hole 112 , and the rotating shaft 41 is vertically connected to the U-shaped hook of the hook lock 40 .

[0053] Exemplarily, the cover plate 13 has an arcuate boss 131 and a cover plate mounting hole 132. The cover plate 13 is mounted on the body 11 through the cover plate mounting hole 132, and the rotating shaft 41 is rotatably mounted in the second shaft hole 112 formed by the arcuate boss 131 and the rotating groove. A return spring fixing hole is provided on the cover plate 13, and a return spring connecting column is connected to the rotating shaft 41, so that one end of the return spring 50 can be connected to the return spring fixing hole, and the other end of the return spring 50 can be connected to the connecting column hole on the return spring connecting column. This installation method is more convenient for installing the return spring 50 than connecting the return spring 50 to the body 11. That is, the return spring 50 is sleeved on the spring column connected to the body 11, and then the two ends of the return spring 50 are respectively connected to the rotating shaft 41 and the cover plate 13, and then the cover plate 13 is closed in the rotating groove.

[0054] In an optional embodiment, a fixing block 70 and a second screw 80 are further included. A mounting hole 412 is provided on the rotating shaft 41. The U-shaped hook is installed in the mounting hole 412 through the fixing block 70. The second screw 80 is locked from the side of the rotating shaft 41 to fasten the U-shaped hook. At the same time, the connection distance L3 of the U-shaped hook relative to the rotating shaft 41 can also be adjusted so that the U-shaped hook can adapt to the splicing of LED boxes of different sizes.

[0055] In an optional embodiment, the frame 200 includes an outer frame 202 and a mounting plate 203 for mounting a central control box and arranged on the inner side of the outer frame, wherein at least two arc-shaped ribs 204 are connected between the ends of the outer frame 202 and the mounting plate 203, and the spacing between the two arc-shaped ribs 204 gradually widens from the mounting plate 203 to the outer frame 202 to enhance the uniform force between the two adjacent frames 200 when they are spliced.

[0056] Exemplarily, a lock mounting area is formed at the position of the outer frame 202 and the arc-shaped rib 204, and the outer frame 202 is provided with a connecting boss 2021 on the lock mounting area, and the connecting member 30 is connected to the connecting boss 2021 by a screw passed through the threaded hole 31, and the U-shaped hook is rotated from one side of the connecting boss 2021 to the other side of the connecting boss 2021, so that the connecting boss 2021 of two adjacent LED boxes can be tightly connected together, thereby realizing the splicing between the two adjacent LED boxes; when the handle member 10 is rotated, the handle member 10 can drive the grip member 20 to rotate relative to the rotating shaft 41 and release the engagement between the rotating shaft 41 and the grip member 20, so that the U-shaped hook can rotate relative to the connecting boss 2021, that is, rotate from the other side of the connecting boss 2021 to this side of the connecting boss 2021, thereby realizing the separation between the two adjacent LED boxes.

[0057] In an optional embodiment, the number of the arc-shaped ribs 204 is three, one of which is connected to the middle of the outer frame 202 and the mounting plate 203, and the other two arc-shaped ribs 204 are symmetrically arranged with the arc-shaped rib 204 connected to the middle of the mounting plate 203, and the two symmetrically arranged arc-shaped ribs 204 extend at one end close to the outer frame 202 toward the arc-shaped rib 204 away from the middle, and are arc-shapedly connected to the outer frame 202, so that the outer frame 202 can be connected to the arc-shaped rib 204 as a whole.

[0058] Specifically, the three arc-shaped ribs 204 are connected together by connecting ribs to form a fishtail-like structure, which can enhance the uniform force between the frames 200 during splicing. At the same time, the weight of the frames 200 can be reduced through scientific and reasonable design to achieve a light and thin design of the LED display.

[0059] In an optional embodiment, the height of the three arc-shaped ribs 204 at one end close to the outer frame 202 is lower than the height of the three arc-shaped ribs 204 at the other end close to the mounting plate 203 .

[0060] Exemplarily, both ends of the mounting plate 203 have connecting protrusions, and the maximum distance between the highest point of the connecting protrusion and the lowest point of the mounting plate 203 can be the height of the two ends of the central control box, so that the two ends of the central control box are flush with the connecting protrusions after being installed on the mounting plate 203.

[0061] In an optional embodiment, a hollow structure is provided on the mounting plate 203 to further reduce the weight of the frame 200 and ensure the light and thin design of the LED display screen, so that the LED display screen of this structure has the advantages of overall thinness and small volume.

[0062] 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 mechanical connections or electrical connections. They can refer to direct connections or indirect connections through an intermediary. They can refer to internal communication between two components or interactions 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.

[0063] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0064] The disclosure above provides many different embodiments or examples for realizing the different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described above. Of course, they are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numerals and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art will appreciate the application of other processes and / or the use of other materials.

[0065] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with an embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Claims

1. An LED display screen, characterized in that: It includes a splicing lock and at least two LED boxes, each of which includes a frame and a light board, the light board is fixed on the frame, and two adjacent frames are fixedly connected by the splicing lock; The splicing lock includes a handle member, a grip member, a hook lock member with a rotating shaft, and a connecting member provided with at least one threaded hole. The handle member is provided with a first axial hole and a second axial hole. The connecting member is rotatably connected in the first axial hole and fixed to one of the LED boxes through the threaded hole. The rotating shaft is rotatably connected in the second axial hole. The grip member is embedded in the handle member to limit the rotation of the rotating shaft relative to the second axial hole. The first axial hole and the second axial hole have a first distance in the first direction and a second distance in the second direction, and the first direction and the second direction are perpendicular to each other. When the hook lock is connected to another LED box, the handle drives the gripping member to rotate around the first axial hole, and the clamping structure on the gripping member is clamped with the rotating shaft, so that two adjacent LED boxes can be connected at the position of the connecting member.

2. The LED display screen according to claim 1, characterized in that: The handle member includes a connecting shaft and a handle with an installation cavity. The connecting member is provided with a connecting hole. The connecting shaft is rotatably connected in the first shaft hole and the connecting hole. The grip member is accommodated in the installation cavity and can rotate around the axis of the connecting shaft relative to the connecting member.

3. The LED display screen according to claim 2, characterized in that: The gripping member has a waist-shaped hole and a clamping structure. At least two clamping slot structures are provided on the rotating shaft. The waist-shaped hole extends toward the clamping structure. The connecting shaft is passed through the waist-shaped hole. The clamping structure is clamped with the clamping slot structure.

4. The LED display screen according to claim 3, characterized in that: The gripping member includes a limiting block and a gripping block, the gripping block is connected to the limiting block and elastically connected to the handle, the limiting block is provided with an inner concave bevel groove in the waist-shaped hole, and the clamping structure is formed on a corner protrusion of the inner concave bevel groove.

5. The LED display screen according to claim 4, characterized in that: The limiting block is provided with a through-hole structure, the clamping structure is arranged on the outside of the through-hole structure, and the pointed end of the clamping structure is located on the extension line of the diameter of the through-hole structure.

6. The LED display screen according to claim 4, characterized in that: The limit block is provided with a claw structure for clamping on the LED box connected to the connecting piece.

7. The LED display screen according to claim 4, characterized in that: The splicing lock buckle further includes a pressure spring, one end of the pressure spring abuts against the grip block, and the other end of the pressure spring abuts against the handle.

8. The LED display screen according to claim 2, characterized in that: The handle member further includes a return spring, which is mounted on the handle, and one end of the return spring abuts against the handle, while the other end of the return spring abuts against the rotating shaft.

9. The LED display screen according to claim 1, characterized in that: The handle includes a body and a cover plate. A rotation groove is formed on the body. The cover plate covers the rotation groove to form the second shaft hole. The rotation shaft is vertically connected to the U-shaped hook of the hook lock member.

10. The LED display screen according to claim 1, characterized in that: It also includes a fixing block, a mounting through hole is provided on the rotating shaft, and the U-shaped hook of the hook lock member is installed in the mounting through hole through the fixing block.

11. The LED display screen according to claim 1, characterized in that: The frame includes an outer frame and a mounting plate for mounting a central control box and arranged on the inner side of the outer frame. At least two arc-shaped ribs are connected between the ends of the outer frame and the mounting plate, and the spacing between the two arc-shaped ribs gradually widens from the mounting plate to the outer frame.

12. The LED display screen according to claim 11, characterized in that: There are three arc-shaped ribs, one of which is connected to the middle of the outer frame and the mounting plate, and the other two arc-shaped ribs are symmetrically arranged with the arc-shaped rib connected to the middle of the mounting plate, and the two symmetrically arranged arc-shaped ribs extend at one end close to the outer frame toward the arc-shaped rib away from the middle, and are arc-shapedly connected to the outer frame.

13. The LED display screen according to claim 12, characterized in that: The height of the three arc-shaped ribs at one end close to the outer frame is lower than the height of the three arc-shaped ribs at the other end close to the mounting plate; or, a hollow structure is provided on the mounting plate.

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