Display screen

Abstract

The utility model relates to the technical field of LED display screens, and discloses a display screen. The display screen comprises a box frame, a quick locking device, a radian locking device and a control box locking device. The quick locking device comprises a first lock body and a second lock body, the first lock body is arranged at one end of each box body frame in the first direction, the second lock body is arranged at the other end of each box body frame in the first direction, and the first lock body of one box body frame is connected with the second lock body of the other box body frame in the two adjacent box body frames in the first direction; a radian lock mechanism is arranged on one side, in the second direction, of each box body frame, a second lock rod assembly is arranged on the other side of each box body frame, the radian lock mechanism of one of the two adjacent box body frames in the second direction is connected with the second lock rod assembly of the other one of the two adjacent box body frames in the second direction, and the radian lock mechanism is used for adjusting the splicing angle of the two adjacent box body frames in the second direction; and the control box body is clamped with the box body frame through a locking structure. The stability and safety of the display screen are enhanced, the control box body can be quickly disassembled and assembled with one hand, and maintenance is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to LED display screen technical field especially relates to a display screen. BACKGROUND

[0002] As the main carrier of modern media transmission, LED display screen is widely used in various occasions, especially in outdoor advertising, information publishing and other fields, and plays an irreplaceable role. However, the existing LED display screen still has some deficiencies in the fixation of the box frame and the control box.

[0003] At present, most of the LED display screens are assembled by multiple display screens when used outdoors. The box frames of these display screens are often connected by screws. Although this connection method is stable, it is relatively cumbersome in the process of installation and maintenance. Screw connection requires professional tools and certain technology, which not only increases the installation cost, but also prolongs the installation time. At the same time, when the display screen needs to be disassembled or replaced, the disassembly process of screw connection is also complex, which is not conducive to quick maintenance.

[0004] In addition, the control box of the display screen also faces the same problem. In order to disassemble and maintain the control box, screws are usually used to fix the control box on the LED display screen box, or four snap locks are used for fixation. Although the control box can be disassembled and installed on the LED display screen box, the disassembly and assembly steps are cumbersome and difficult to complete with one hand, which cannot realize quick maintenance.

[0005] Therefore, there is an urgent need for a display screen to solve the above problems. UTILITY MODEL CONTENT

[0006] Based on the above, the purpose of the utility model is to provide a display screen which not only can reduce the installation and maintenance cost, improve the work efficiency, but also can enhance the stability and safety of the display screen, prolong its service life; the camber lock device adjusts the splicing angle of the adjacent two box frames along the second direction; the control box body can be quickly disassembled and assembled with one hand, which is convenient for maintenance.

[0007] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0008] A display screen comprises:

[0009] a box frame;

[0010] a quick lock device, the quick lock device comprises a first lock body and a second lock body, one end of the box frame along a first direction is provided with the first lock body, the other end along the first direction is provided with the second lock body, the first lock body of one of the adjacent two box frames along the first direction and the second lock body of the other are connected;

[0011] The radian lock device comprises a radian lock mechanism and a second lock rod assembly, one side of the box frame along a second direction is provided with the radian lock mechanism, the other side is provided with the second lock rod assembly, the radian lock mechanism of one of the two adjacent box frames along the second direction and the second lock rod assembly of the other are connected, and the radian lock device is used for adjusting the joint angle of the two adjacent box frames along the second direction.

[0012] The control box locking device comprises a control box body and a locking structure, the control box body is clamped with the box frame through the locking structure, and the locking structure comprises:

[0013] The driving assembly is rotationally connected to the control box body, and has a locking state of being clamped with the control box body and an unlocking state of being relatively rotated with the control box body.

[0014] The clamping part is connected to the driving assembly and is at least partially slidably arranged in the control box body, the driving assembly is rotatable to drive the clamping part to slide in the control box body, so that the clamping part is clamped with the box frame.

[0015] As a preferred technical scheme of the display screen, the first lock body comprises a locking seat and a first lock rod assembly, and the first lock rod assembly is used for locking the locking seat with the second lock body;

[0016] The locking seat comprises a first seat body and a first connecting column, the first seat body is arranged at one end of the first connecting column, and a first connecting hole penetrating through the first connecting column is arranged at the center of the first seat body;

[0017] The first lock rod assembly comprises a first lock rod, the first lock rod is connected with the second lock body after penetrating through the first connecting hole and extending out of the first seat body, and a protruding limiting groove is arranged on the outer periphery of the first lock rod;

[0018] A first limiting assembly is arranged on the side of the first seat body close to the first connecting column, and the first limiting assembly is arranged in the circumferential direction of the first connecting column; the first limiting assembly comprises a first limiting column, the first limiting column is telescopically arranged, the first limiting column penetrates into the first connecting hole through the first connecting column, and the first limiting column is in lengthened state and matched with the protruding limiting groove, so that the first lock rod is kept in the extended state.

[0019] As a preferred technical scheme of the display screen, the first lock body further comprises a locking sleeve, one end of the locking sleeve is rotationally connected with the first connecting column, the first lock rod penetrates through the locking sleeve and the first connecting hole in sequence, the outer periphery of the locking sleeve is matched with the first limiting assembly, and the first limiting column is telescopically driven by rotating the locking sleeve to drive the first lock rod to move.

[0020] The first seat body is provided with a first limiting hole on one side close to the first connecting column, and the first limiting hole is located in the circumferential direction of the first connecting column;

[0021] The first limiting assembly further comprises a first limiting spring and a pressing piece, a gap is left between the first limiting hole and the first connecting column, the gap is located at an end away from the first seat body, the first limiting spring is arranged at an end of the first limiting column away from the first connecting column, the pressing piece is arranged at an end of the first limiting column close to the first connecting column, the locking sleeve is inserted into the gap and matched with the pressing piece, and the first limiting column can be extended or retracted by rotating the locking sleeve.

[0022] As a preferred technical scheme of the display screen, the outer periphery of the locking sleeve is provided with a vertical section surface, the pressing piece is in abutment with the vertical section surface when the first limiting column is in cooperation with the extension limiting groove, and the pressing piece is in abutment with the outer periphery of the locking sleeve by rotating the locking sleeve, so that the first limiting column can be separated from the extension limiting groove.

[0023] As a preferred technical scheme of the display screen, the outer periphery of the first locking rod is further provided with a locking limiting groove, the depth of the locking limiting groove is smaller than the depth of the extension limiting groove, the locking limiting groove extends along the length direction of the first locking rod, and the extension limiting groove is arranged at an end of the locking limiting groove away from the connection between the first locking rod and the second lock body.

[0024] As a preferred technical scheme of the display screen, the arc lock mechanism comprises an arc lock seat and a latch lock assembly, the latch lock assembly is arranged on one side of the arc lock seat, and the second locking rod assembly is matched and locked with the latch lock assembly; the arc lock mechanism further comprises:

[0025] An arc lock sliding block, the arc lock seat is provided with a first sliding groove extending in the circumferential direction, the arc lock sliding block is slidably arranged in the first sliding groove, both ends of the first sliding groove are arranged through both side walls of the arc lock seat, and one side of the arc lock sliding block is provided with the latch lock assembly;

[0026] A fixed pressing block, the arc lock sliding block is provided with a first mounting hole extending in the radial direction along a center line, and the fixed pressing block is telescopically arranged in the first mounting hole;

[0027] The angle adjusting assembly comprises an angle adjusting knob and a connecting rod arranged at one end of the angle adjusting knob, the connecting rod is rotationally connected with the arc lock slider through the fixed pressing block, the fixed pressing block is provided with an angle locking position and an angle unlocking position on the matching end face of the angle adjusting knob, rotating the angle adjusting knob can selectively match the angle adjusting knob with the angle locking position or the angle unlocking position, and the fixed pressing block can be fixed or released with the arc lock lock seat.

[0028] As a preferred technical scheme of the display screen, the angle locking position comprises a first locking plane, the angle unlocking position comprises a first unlocking plane, the height of the first unlocking plane is lower than that of the first locking plane, and the first locking plane is provided with two first locking planes, and the first unlocking plane is located between the two first locking planes.

[0029] As a preferred technical scheme of the display screen, the fixed pressing block comprises a pressing head and a first sleeve, the first sleeve is arranged at one end of the pressing head, the outer diameter of the first sleeve is smaller than that of the pressing head, a through hole penetrating through the pressing head is arranged on the first sleeve, the top of the arc lock lock seat is provided with a first avoiding groove extending along the extension direction of the first sliding groove, the pressing head is arranged between the angle adjusting knob and the arc lock lock seat, the first sleeve enters the first mounting hole through the first avoiding groove, and the connecting rod enters the first mounting hole through the through hole and is rotationally connected with the arc lock slider;

[0030] The first sleeve is telescopically arranged in the first mounting hole through a first spring; the first mounting hole is a stepped hole, the first spring is sleeved on the outer periphery of the connecting rod, one end of the first spring is in abutment with the end of the first sleeve away from the pressing head, and the other end is in abutment with the stepped surface of the stepped hole.

[0031] As a preferred technical scheme of the display screen, the box frame comprises a frame body and a protection mechanism arranged at both ends of the frame body along a first direction, the protection mechanism comprises a protection plate, a connecting frame and a first elastic member, the protection plate extends along the length direction of the end of the frame body; the connecting frame is arranged at one side of the protection plate, the frame body is provided with a receiving cavity, the first elastic member is arranged in the receiving cavity and connected with the connecting frame, the extension direction of the first elastic member is arranged at a preset included angle with the protection plate, the connecting frame can be retracted into the receiving cavity and compress the first elastic member under stress; the first elastic member can drive the connecting frame to extend out of the receiving cavity, so that the connecting frame drives the protection plate to extend to the front side of the display module.

[0032] As a preferred technical scheme of the display screen, the bottom surface of the accommodating cavity is an inclined surface, the inclined surface is at the preset included angle with the protective plate, the bottom surface of the connecting frame is parallel to the inclined surface, the inclined surface is provided with a first groove, the bottom surface of the first groove is parallel to the inclined surface, the first elastic member is arranged in the first groove, and the bottom surface of the connecting frame is provided with a second connecting column which is inserted into the first elastic member in a direction perpendicular to the inclined surface.

[0033] As a preferred technical scheme of the display screen, the connecting frame is provided with a guide groove parallel to the center line of the inclined surface, and the accommodating cavity is provided with a guide member which cooperates with the guide groove to provide guidance for the movement of the protective plate.

[0034] As a preferred technical scheme of the display screen, the protection mechanism further comprises a second limiting assembly which is telescopically arranged in the frame body, the protective plate is provided with a second limiting hole, and the second limiting assembly is used for cooperating with the second limiting hole to fix the protective plate when the protective plate is extended to the front side of the display module.

[0035] As a preferred technical scheme of the display screen, the display screen further comprises a display module, and the display module comprises:

[0036] a first bottom shell and an LED lamp plate, the LED lamp plate is mounted on the front side of the first bottom shell, and a maintenance hole is arranged through the LED lamp plate and the first bottom shell;

[0037] a rear cover connected to the rear side of the first bottom shell;

[0038] a locking device arranged between the first bottom shell and the rear cover, the locking device comprises a dismounting shaft, a first locking member and a second locking member, the dismounting shaft is provided with a transmission part and a maintenance part, one end of the first locking member and the second locking member which are close to each other is matched with the transmission part, the dismounting shaft is rotated, the transmission part drives the first locking member and the second locking member to move in the direction of approaching or moving away from each other, one end of the first locking member and the second locking member which are away from each other is provided with a clamping part, and the rear cover is provided with a avoiding opening corresponding to the clamping part;

[0039] the maintenance hole is arranged corresponding to the maintenance part, a maintenance thimble is arranged to apply force to the maintenance part through the maintenance hole, so that the dismounting shaft can be rotated;

[0040] the box frame is provided with a clamping position for clamping the clamping part.

[0041] As a preferred technical scheme of the display screen, the maintenance hole comprises an unlocking hole and a locking hole, the unlocking hole and the locking hole are arranged at intervals, the maintenance part comprises a second unlocking plane and a second locking plane, the second unlocking plane and the second locking plane are arranged at intervals along the circumferential direction of the dismounting shaft by a preset angle; the unlocking hole can correspond to the second unlocking plane; and the locking hole can correspond to the second locking plane.

[0042] As a preferred technical scheme of the display screen, the maintenance part further comprises a connecting arc surface for connecting the second unlocking plane and the second locking plane, a first limiting groove is arranged at one end of the connecting arc surface close to the second unlocking plane, and a second limiting groove is arranged at one end of the connecting arc surface close to the second locking plane.

[0043] The first bottom shell is provided with a limiting protrusion on one side close to the dismounting shaft, the limiting protrusion is located between the unlocking hole and the locking hole, when the limiting protrusion slides into the first limiting groove, the unlocking hole corresponds to the second unlocking plane; and when the limiting protrusion slides into the second limiting groove, the locking hole corresponds to the second locking plane.

[0044] As a preferred technical scheme of the display screen, the transmission part comprises a gear structure arranged on the outer periphery of the dismounting shaft, the first locking member is provided with a first rack structure at one end close to the second locking member, the second locking member is provided with a second rack structure at one end close to the first locking member, the first rack structure is located on one side of the gear structure close to the rear cover and is engaged with the gear structure; and the second rack structure is located on one side of the gear structure close to the first bottom shell and is engaged with the gear structure.

[0045] As a preferred technical scheme of the display screen, the driving assembly comprises:

[0046] A main body is rotationally connected to the control box body and connected with the clamping member;

[0047] A locking member is rotationally arranged in the main body, a first end of the locking member is connected with the main body through a second elastic member, and a second end of the locking member is clamped with the control box body.

[0048] A button is arranged outside the main body, the button is connected with the locking member and used for pressing to drive the locking member to press the second elastic member.

[0049] As a preferred technical scheme of the display screen, the control box locking device further comprises a first connecting member, a guide hole is arranged on the clamping member, one end of the first connecting member is rotationally connected with the main body and the other end is slidingly arranged in the guide hole, and the main body can drive the first connecting member to slide in the guide hole.

[0050] The display screen has the advantages that:

[0051] The display screen has the advantages that:

[0052] Furthermore, the control box body is clamped with the box frame through the locking structure, the locking structure comprises a driving assembly and a clamping piece, the driving assembly is rotationally connected to the control box body, the driving assembly has a locking state of clamping with the control box body and an unlocking state of rotating relative to the control box body, the clamping piece is connected to the driving assembly and is at least partially slidably arranged in the control box body, and the driving assembly is rotatable to drive the clamping piece to slide in the control box body, so that the clamping piece is clamped with the box frame. By arranging the driving assembly and the clamping piece, when the driving assembly is in the unlocking state, the driving assembly is rotated to drive the clamping piece to slide in the control box body, so that the clamping piece is pushed to the corresponding position of the box frame and clamped with the box frame, and then the driving assembly is clamped with the control box body to keep the driving assembly in the locking state, so that the control box body is mounted on the box frame; when the control box body needs to be removed, the driving assembly is operated by one hand to make the driving assembly reach the unlocking state, and the driving assembly is rotated to drive the clamping piece to be separated from the clamping position of the box frame, so that the structure is simple and convenient to operate, and one-handed quick disassembly and assembly are facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0053] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the description of the embodiments of the present application will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present application and the drawings without creative labor.

[0054] Figure 1 is a structural schematic view of the display screen provided by the embodiments of the present application;

[0055] Figure 2 is a structural schematic view of the quick locking device provided by the embodiments of the present application;

[0056] Figure 3 is an exploded view of the quick lock device provided by the embodiment of the utility model;

[0057] Figure 4 is the first limit component of the quick lock device provided by the embodiment of the utility model and the section view of the cooperation of the first lock rod;

[0058] Figure 5 is the first lock rod component of the quick lock device provided by the embodiment of the utility model and the section view of the cooperation of the locking sleeve;

[0059] Figure 6 is the top view of the first operation handle of the quick lock device provided by the embodiment of the utility model in the locking state and the unlocking state;

[0060] Figure 7 is the structure schematic view of the arc lock device provided by the embodiment of the utility model;

[0061] Figure 8 is the section view of the arc lock device provided by the embodiment of the utility model when the locking angle is 0 °;

[0062] Figure 9 is the section view of the arc lock device provided by the embodiment of the utility model when the angle is unlocked;

[0063] Figure 10 is the exploded view of the arc lock device provided by the embodiment of the utility model;

[0064] Figure 11 is the structure schematic view of the fixed pressing block provided by the embodiment of the utility model;

[0065] Figure 12 is the structure schematic view of the third seat body of the arc lock seat provided by the embodiment of the utility model;

[0066] Figure 13 is the structure schematic view of the upper cover of the arc lock seat provided by the embodiment of the utility model;

[0067] Figure 14 is the structure schematic view of the angle adjusting knob and connecting rod provided by the embodiment of the utility model;

[0068] Figure 15 is the structure schematic view of the bolt lock piece provided by the embodiment of the utility model;

[0069] Figure 16 is the top view of the arc lock device provided by the embodiment of the utility model;

[0070] Figure 17 is the section view of the arc lock device provided by the embodiment of the utility model when the locking angle is -10 °;

[0071] Figure 18 is the cross-sectional view of the radian lock device of the embodiment of the utility model, and the locking angle is 15 °;

[0072] Figure 19 is the structural schematic view of the box frame of the embodiment of the utility model;

[0073] Figure 20 is the structural schematic view of the display screen of the embodiment of the utility model;

[0074] Figure 21 is the exploded schematic view of the box frame of the embodiment of the utility model;

[0075] Figure 22 is the side sectional view of the display screen when the protection plate is in the extended state of the embodiment of the utility model;

[0076] Figure 23 is Figure 22 the local enlarged view of A in the middle;

[0077] Figure 24 is the side sectional view of the display screen when the protection plate is in the retracted state of the embodiment of the utility model;

[0078] Figure 25 is Figure 24 the local enlarged view of B in the middle;

[0079] Figure 26 is the exploded schematic view of the box frame and display module of the embodiment of the utility model;

[0080] Figure 27 is the front schematic view of the box frame of the embodiment of the utility model;

[0081] Figure 28 is the schematic view when the display module is not locked on the box frame of the embodiment of the utility model;

[0082] Figure 29 is the schematic view when the display module is locked on the box frame of the embodiment of the utility model;

[0083] Figure 30 is the structural schematic view of the display module of the embodiment of the utility model;

[0084] Figure 31 is the exploded view of the display module of the embodiment of the utility model;

[0085] Figure 32 is the cross-sectional view of the locking device cooperation in the display module of the embodiment of the utility model;

[0086] Figure 33 is a structural schematic view of the second operation handle and dismounting shaft provided by the embodiment of the utility model;

[0087] Figure 34 is a sectional view of the display module unlocked by the maintenance ejector pin provided by the embodiment of the utility model;

[0088] Figure 35 is a sectional view of the display module locked by the maintenance ejector pin provided by the embodiment of the utility model;

[0089] Figure 36 is a first structural schematic view of the box frame and control box body (with locking structure) provided by the embodiment of the utility model;

[0090] Figure 37 is a second structural schematic view of the box frame and control box body (with locking structure) provided by the embodiment of the utility model;

[0091] Figure 38 is Figure 37 is a local enlarged view of C in the figure;

[0092] Figure 39 is a local schematic view of the box frame and control box body (with locking structure) provided by the embodiment of the utility model;

[0093] Figure 40 is a structural schematic view of the control box body (with locking structure) provided by the embodiment of the utility model;

[0094] Figure 41 is a partial exploded view of the control box body (with locking structure) provided by the embodiment of the utility model;

[0095] Figure 42 is a first side view of the control box body (with locking structure) provided by the embodiment of the utility model;

[0096] Figure 43 is a first sectional view of the control box body (with locking structure) provided by the embodiment of the utility model;

[0097] Figure 44 is Figure 43 is a local enlarged view of D in the figure;

[0098] Figure 45 is a second sectional view of the control box body (with locking structure) provided by the embodiment of the utility model;

[0099] Figure 46 is Figure 45 is a local enlarged view of E in the figure;

[0100] Figure 47is the second side view of the control box body (with locking structure) provided by the utility model embodiment;

[0101] Figure 48 is the third sectional view of the control box body (with locking structure) provided by the utility model embodiment;

[0102] Figure 49 is Figure 48 The local enlarged view at F in figure.

[0103] The figure is marked as follows:

[0104] 1, box frame;11, installation vertical board;12, mounting bracket;13, frame body;131, containing cavity;1311, inclined surface;13111, first recess;132, guide screw;133, baffle;1331, second connecting hole;1332, second perforation;134, second mounting hole;135, fixing screw;14, protection mechanism;141, protection plate;1411, second limiting hole;1412, second avoiding slot;142, connecting frame;1421, second connecting column;1422, guide slot;143, first elastic piece;144, second limiting assembly;1441, second limiting column;14411, second column body;14412, limiting part;14413, pressing part;1442, second limiting spring;15, magnet;16, clamping position;17, clamping part;

[0105] 2, quick lock device;21, first lock body;211, locking seat;2111, first seat body;21111, first limiting hole;2112, first connecting column;2113, first connecting hole;212, first lock rod assembly;2121, first lock rod;21211, extension limiting recess;21212, first limiting ring;21213, locking limiting recess;21214, rubber sleeve;21215, clamping head;21216, clamping slot;2122, lock rod spring;213, first limiting assembly;2131, first limiting column;21311, limiting head;21312, first column body;21313, spring mounting slot;2132, first limiting spring;2133, pressing piece;2134, fixed piece;214, locking sleeve;2141, vertical section;2142, stepped hole;215, first operation handle;2151, locking mark;2152, unlocking mark;22, second lock body;221, lock piece;2211, first lock hole;222, telescopic handle;223, second seat body;

[0106] 3, radian lock device;31, radian lock seat;311, third seat body;3111, first sliding groove;312, upper cover;3121, first avoiding slot;3122, first pressing tooth;3123, sliding block positioning hole;3124, angle scale;

[0107] 32, latch assembly; 321, latch plate; 3211, second locking hole; 32111, first through hole; 32112, clamping hole; 3212, handle; 322, plate side plate; 323, plate cover; 324, second spring;

[0108] 33, arc lock slider; 331, first mounting hole; 332, second positioning bead; 333, second sliding groove; 334, extension; 3341, avoiding hole;

[0109] 34, angle adjustment knob; 341, first positioning bead;

[0110] 35, connecting rod; 351, threaded hole;

[0111] 36, fixed pressing block; 361, pressing head; 3611, second pressing tooth; 3612, first locking plane; 36121, locking positioning hole; 3613, first unlocking plane; 36131, unlocking positioning hole; 3614, limiting block; 3615, transition inclined surface; 3616, alignment block; 362, first sleeve; 3621, through hole;

[0112] 37, first spring;

[0113] 38, limiting screw;

[0114] 39, second lock rod assembly; 391, second lock rod; 392, lock rod mounting plate; 393, locking handle;

[0115] 4, display module; 41, first bottom shell; 411, accommodating groove; 412, limiting protrusion; 413, first support block; 4131, first support groove; 414, iron sheet; 415, protruding column;

[0116] 42, LED lamp plate;

[0117] 43, maintenance hole; 431, unlocking hole; 432, locking hole; 4301, first hole; 4302, second hole;

[0118] 44, rear cover; 441, first avoiding opening; 442, second avoiding opening; 443, third avoiding groove; 444, second groove;

[0119] 45, locking device; 451, dismounting shaft; 4511, gear structure; 4512, maintenance part; 45121, second unlocking plane; 45122, second locking plane; 45123, connecting camber; 45124, first limiting groove; 45125, second limiting groove; 4513, second limiting ring; 452, first locking piece; 4521, first clamping part; 4522, first rack structure; 453, second locking piece; 4531, second clamping part; 4532, second rack structure; 454, second operation handle;

[0120] 46, maintenance thimble;

[0121] 47, first screw;

[0122] 5, control box locking device; 51, control box body; 511, clamping hook; 512, positioning piece;

[0123] 52, driving assembly; 521, main body; 522, locking piece; 5221, cylindrical protrusion; 523, button; 524, second elastic piece; 525, fastener; 526, rotating connecting piece;

[0124] 53, clamping piece; 531, guide hole; 532, waist-shaped hole; 533, clamping end;

[0125] 54, first connecting piece; 55, second connecting piece; 56, third connecting piece; 57, glass bead screw. DETAILED DESCRIPTION

[0126] The utility model will be described in further detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model, and not to limit the utility model. In addition, it should be noted that, in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.

[0127] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication inside two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0128] In the utility model, unless another definite provision and limitation, first feature is in second feature "on" or "under" can include that first and second features are in direct contact, also can include that first and second features are not in direct contact but contact through other feature between them.Moreover, first feature is in second feature "on", "above" and "upper surface" includes that first feature is in second feature directly above and obliquely above, or just indicates that first feature horizontal height is higher than second feature.First feature is in second feature "under", "below" and "under surface" includes that first feature is in second feature directly below and obliquely below, or just indicates that first feature horizontal height is less than second feature.

[0129] In the description of the embodiment, the terms "upper", "lower", "left", "right" and other orientation or position relationship are based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the utility model.In addition, the terms "first", "second" are only used to distinguish in description, and have no special meaning.

[0130] As shown in Figure 1 , Figures 36-42 , the utility model provides a display screen, the display screen includes box frame 1, quick lock device 2, cam lock device 3 and control box locking device 5.Specifically, quick lock device 2 includes first lock body 21 and second lock body 22, and the first lock body 21 is arranged at one end of the box frame 1 along a first direction, and the second lock body 22 is arranged at the other end along the first direction, and the first lock body 21 of one of the adjacent two box frames 1 along the first direction is connected with the second lock body 22 of the other; the cam lock device 3 includes a cam lock mechanism and a second lock rod assembly 39, and the cam lock mechanism is arranged at one side of the box frame 1 along a second direction, and the second lock rod assembly 39 is arranged at the other side along the second direction, and the cam lock mechanism of one of the adjacent two box frames 1 along the second direction is connected with the second lock rod assembly 39 of the other, and the cam lock device 3 is used for adjusting the splicing angle of the adjacent two box frames 1 along the second direction; the control box locking device 5 includes a control box body 51 and a locking structure, and the control box body 51 is clamped with the box frame 1 through the locking structure, and the locking structure includes a driving assembly 52 and a clamping piece 53, and the driving assembly 52 is rotationally connected to the control box body 51, and the driving assembly 52 has a locking state of clamping with the control box body 51 and an unlocking state of rotating relative to the control box body 51; the clamping piece 53 is connected to the driving assembly 52 and is at least partially slidably arranged in the control box body 51, and the driving assembly 52 can drive the clamping piece 53 to slide in the control box body 51, so that the clamping piece 53 is clamped with the box frame 1.In the embodiment, the first direction is the length direction of the box frame 1, and the second direction is the width direction of the box frame 1.

[0131] When assembled, the first lock body 21 of one of the two adjacent cabinet frames 1 in the first direction and the second lock body 22 of the other are connected to realize the connection of the two adjacent cabinet frames 1 in the first direction; the cam lock mechanism of one of the two adjacent cabinet frames 1 in the second direction and the second lock rod assembly 39 of the other are connected to realize the splicing and fixing of the adjacent display screens, which not only can reduce the installation and maintenance cost, improve the work efficiency, but also can enhance the stability and safety of the display screen and prolong its service life. Secondly, the cam lock device 3 adjusts the splicing angle of the two adjacent cabinet frames 1 in the second direction, which is convenient to operate and improves the angle adjustment efficiency, meeting the angle requirement of the display screen. Furthermore, the control box 51 is clamped with the cabinet frame 1 through the locking structure, which includes the driving assembly 52 and the clamping piece 53. The driving assembly 52 is rotationally connected to the control box 51, and has a locking state of clamping with the control box 51 and an unlocking state of rotating relative to the control box 51. The clamping piece 53 is connected to the driving assembly 52 and is at least partially slidably arranged in the control box 51. The rotation of the driving assembly 52 can drive the clamping piece 53 to slide in the control box 51, so that the clamping piece 53 is clamped with the cabinet frame 1. By setting the driving assembly 52 and the clamping piece 53, when the driving assembly 52 is in the unlocking state, rotating the driving assembly 52 drives the clamping piece 53 to slide in the control box 51, so that the clamping piece 53 is pushed to the corresponding position of the cabinet frame 1 and clamped with the cabinet frame 1. Then, the driving assembly 52 is clamped with the control box 51 to keep the driving assembly 52 in the locking state, so that the control box 51 is installed on the cabinet frame 1. When it is needed to remove the control box 51, only one hand is needed to operate the driving assembly 52 to make the driving assembly 52 reach the unlocking state, and then rotate the driving assembly 52 to drive the clamping piece 53 to disengage from the clamping position 16 of the cabinet frame 1. The structure is simple and convenient to operate, and can realize one-handed quick disassembly and assembly for easy maintenance.

[0132] Specifically, the two ends of the cabinet frame 1 in the first direction are each provided with two mounting vertical plates 11, one end of which is connected with the first lock body 21, and the other end of which is connected with the second lock body 22. The first lock body 21 and the second lock body 22 are fixedly connected with the mounting vertical plate 11 by fastening screws.

[0133] The quick lock device 2 in the prior art cannot keep the lock rod of the quick lock device 2 in the extended state to position the two adjacent cabinet frames 1 when locking the two adjacent cabinet frames 1, which leads to difficult positioning of the two cabinet frames 1 and reduces the installation efficiency.

[0134] In order to solve the above technical problems, the present application provides a cabinet frame 1, which comprises a cabinet frame body 10 and a quick lock device 2. Figures 2-6As shown, the first lock body 21 of the quick locking device 2 comprises a locking seat 211 and a first lock rod assembly 212, and the second lock body 22 comprises a locking sheet 221, and the first lock rod assembly 212 is used to lock the locking seat 211 and the locking sheet 221. The locking seat 211 comprises a first seat body 2111 and a first connecting column 2112, the first seat body 2111 is arranged at one end of the first connecting column 2112, and a first connecting hole 2113 penetrating through the first connecting column 2112 is arranged at the center of the first seat body 2111. The first lock rod assembly 212 comprises a first lock rod 2121, and the first lock rod 2121 extends out of the first seat body 2111 after penetrating through the first connecting hole 2113 and is connected with the locking sheet 221.

[0135] The second lock body 22 further comprises a second seat body 223 and a telescopic handle 222, the locking sheet 221 is arranged in the second seat body 223 in a telescopic manner, the telescopic handle 222 is arranged at one side of the second seat body 223 and is connected with the locking sheet 221. The locking sheet 221 is provided with a first lock hole 2211, the inner diameter of the first lock hole 2211 is greater than the outer diameter of the first lock rod 2121, the center of the second seat body 223 is provided with a through hole, one end of the first lock rod 2121 is provided with a clamping groove 21216, the first lock rod 2121 extends out of the second seat body 223 through the through hole and the first lock hole 2211, and the locking sheet 221 is moved through the telescopic handle 222, so that the clamping groove 21216 is clamped with the locking sheet 221, thereby realizing the fixation of the first lock rod 2121 and the locking sheet 221.

[0136] The outer periphery of the first lock rod 2121 is provided with an extension limiting groove 21211; one side of the first seat body 2111 close to the first connecting column 2112 is provided with a first limiting assembly 213, and the first limiting assembly 213 is arranged in the circumferential direction of the first connecting column 2112; the first limiting assembly 213 comprises a first limiting column 2131, the first limiting column 2131 is arranged in a telescopic manner, the first limiting column 2131 penetrates through the first connecting column 2112 and extends into the first connecting hole 2113, and the first limiting column 2131 is elongated to be matched with the extension limiting groove 21211, so as to keep the first lock rod 2121 in an extended state. When connecting two adjacent box frame 1, the first lock rod 2121 extended out of one of the box frame 1 is matched with the locking sheet 221 of the other box frame 1 to realize positioning, and then the first lock rod 2121 is operated to lock the locking seat 211 and the locking sheet 221. The first lock rod 2121 of the quick locking device 2 can keep in an extended state, realize the positioning of two box frame 1, and is more convenient for locking operation of two box frame 1, thereby improving the installation efficiency.

[0137] Specifically, the first seat body 2111 is provided with a first limiting hole 21111 on the side close to the first connecting column 2112, and the first limiting hole 21111 is located in the circumferential direction of the first connecting column 2112. A first limiting assembly 213 is telescopically arranged in the first limiting hole 21111. The outer periphery of the locking seat 211 is provided with a communication hole connecting the first limiting hole 21111 and the first connecting hole 2113, and the first limiting column 2131 extends into the first connecting hole 2113 through the communication hole. When the first lock rod 2121 passes through the first connecting hole 2113, the first limiting column 2131 is retracted. When the first lock rod 2121 passes through the first connecting hole 2113 and extends out of the first seat body 2111 to connect with the first lock hole 2211 on the second seat body 223, the first limiting column 2131 is elongated and can cooperate with the extended limiting recess 21211 to keep the first lock rod 2121 in the extended state.

[0138] The first limiting assembly 213 further includes a first limiting spring 2132 and a pressing piece 2133. The first limiting spring 2132 is arranged at the end of the first limiting column 2131 away from the first connecting column 2112, and the pressing piece 2133 is arranged at the end of the first limiting column 2131 close to the first connecting column 2112. The first limiting column 2131 includes a limiting head 21311 and a first column body 21312. The limiting head 21311 is connected to one end of the first column body 21312, and the end of the limiting head 21311 away from the first column body 21312 is provided with a spring mounting groove 21313. One end of the first limiting spring 2132 is connected to the end of the first limiting hole 21111 away from the communication hole, and the other end is connected to the groove bottom of the spring mounting groove 21313. The limiting head 21311 is slidingly arranged in the first limiting hole 21111, and the pressing piece 2133 is located between the limiting head 21311 and the first connecting column 2112. By applying a force to the first limiting column 2131 through the pressing piece 2133, the first limiting column 2131 compresses the first limiting spring 2132 to retract. When the force applied to the pressing piece 2133 is removed, the first limiting column 2131 can be elongated under the elastic restoring force of the first limiting spring 2132 to cooperate with the extended limiting recess 21211.

[0139] In an embodiment, the first limiting component 213 further comprises a fixed sheet 2134, which is arranged at an end of the first limiting hole 21111 away from the first connecting column 2112, and the fixed sheet 2134 is in interference fit with the first limiting hole 21111. One end of the first limiting spring 2132 is connected with the fixed sheet 2134, and the other end is connected with the first limiting column 2131. In order to facilitate the installation of the first limiting column 2131, the end of the first limiting hole 21111 away from the first connecting column 2112 is provided through, and the pressing sheet 2133 is provided with a through hole. The first limiting column 2131 is inserted into the through hole and placed in the first limiting hole 21111, and then the first limiting spring 2132 is placed in the spring mounting groove 21313. Finally, the fixed sheet 2134 is in interference fit with the first limiting hole 21111, so that one end of the first limiting spring 2132 abuts against the fixed sheet 2134, and the other end abuts against the groove bottom of the spring mounting groove 21313, thereby providing the first limiting column 2131 with elastic support force.

[0140] The lock rod in the prior art is generally driven by an operating member to move along the axial direction of the connecting hole, which is convenient for the operation of the installer. However, the operating member needs to have sufficient axial movement space on the box frame 1 for moving along the axial direction of the connecting hole, which is not suitable for the box frame 1 with limited axial movement space.

[0141] In order to improve the versatility of the quick lock device 2, the first lock body 21 further comprises a locking sleeve 214, one end of which is rotationally connected with the first connecting column 2112, and the first lock rod 2121 passes through the locking sleeve 214 and the first connecting hole 2113 in sequence. The outer periphery of the locking sleeve 214 is matched with the first limiting component 213. Rotating the locking sleeve 214 can make the first limiting column 2131 extend and retract to drive the first lock rod 2121 to move. By rotating the locking sleeve 214, the locking sleeve 214 drives the first limiting column 2131 to extend and retract, thereby achieving the limiting and unlocking of the first lock rod 2121 in the first connecting hole 2113. When the first lock rod 2121 is limited in the first connecting hole 2113, the first lock rod 2121 remains in the extended state. When the first lock rod 2121 is unlocked in the first connecting hole 2113, the first lock rod 2121 drives the second seat body 223 to move towards the first seat body 2111, thereby connecting the first seat body 2111 and the second seat body 223 together to realize the connection of the adjacent two box frames 1. When disassembling the two box frames 1, the second seat body 223 can be moved away from the first seat body 2111 by moving the locking sheet 221 through the extension handle 222, so that the first lock rod 2121 is disengaged from the locking sheet 221.

[0142] Specifically, the outer periphery of the first connecting post 2112 is provided with external threads, and the inner wall of the locking sleeve 214 near the end of the first connecting post 2112 is provided with internal threads. The internal threads engage with the external threads, allowing the locking sleeve 214 and the first connecting post 2112 to rotate relative to each other. The threaded engagement between the locking sleeve 214 and the first connecting post 2112 enables the locking sleeve 214 to be connected to the locking seat 211, and the locking sleeve 214 to rotate relative to the first connecting post 2112. Of course, in other embodiments, the locking sleeve 214 can also be rotatably connected to the first connecting post 2112 via a bearing.

[0143] The locking sleeve 214 is configured with a stepped hole 2142 at one end away from the first connecting post 2112. The stepped hole 2142 is configured with a larger inner diameter at one end near the internal thread and a smaller inner diameter at the other end away from the internal thread. The inner diameter of the smaller inner diameter hole is larger than the outer diameter of the first locking rod 2121. After the locking sleeve 214 is threadedly connected to the first connecting post 2112, the first locking rod 2121 is inserted into the smaller inner diameter hole, the larger inner diameter hole and the first connecting hole 2113 of the stepped hole 2142 in sequence and then extends out of the first seat 2111 and connects to the first locking hole 2211 on the second seat 223.

[0144] Specifically, the first locking rod assembly 212 also includes a locking rod spring 2122, which is sleeved on the outside of the first locking rod 2121. The first locking rod 2121 is provided with a first limiting ring 21212 at the end away from the locking plate 221. One end of the locking rod spring 2122 abuts against the end face of the first connecting post 2112, and the other end abuts against the first limiting ring 21212. When the first locking rod 2121 extends out of the first seat 2111 after passing through the first connecting hole 2113 and connects with the locking plate 221, the locking rod spring 2122 is compressed. When the locking sleeve 214 rotates counterclockwise by 120°, the threaded length between the locking sleeve 214 and the first connecting post 2112 is shortened, the first limiting post 2131 disengages from the extending limiting groove 21211, and the first locking rod 2121 moves away from the first seat 2111 along with the locking sleeve 214. The compression of the locking rod spring 2122 decreases. When the second seat 223 abuts against the first seat 2111, the two adjacent box frames 1 are locked and fixed. The locking rod spring 2122 provides a certain buffer force for the movement of the first locking rod 2121, alleviating the collision force between the second seat 223 and the first seat 2111 during the process of the first locking rod 2121 driving the second seat 223 to move closer to the first seat 2111, thus avoiding collision damage.

[0145] The first limiting ring 21212 is further provided with a rubber sleeve 21214 away from one end of the first lock rod 2121, and the rubber sleeve 21214 is clamped with a clamping joint 21215 arranged on one side of the first limiting ring 21212. By arranging the rubber sleeve 21214, when the first lock rod 2121 drives the second lock body 22 to move towards the lock seat 211, the end of the first lock rod 2121 away from the second lock body 22 collides with the display module 4, and the display module 4 is damaged.

[0146] In an embodiment, a gap is left between the first limiting hole 21111 and the first connecting column 2112, and the gap is located away from one end of the first seat body 2111. The locking sleeve 214 extends into the gap and cooperates with the pressing piece 2133. By rotating the locking sleeve 214, the first limiting column 2131 can be extended and retracted. By applying force to the pressing piece 2133 through the locking sleeve 214, the first limiting column 2131 can be extended and retracted.

[0147] Specifically, the locking sleeve 214 is provided with a vertical section 2141 on the outer periphery. When the first limiting column 2131 is extended and cooperates with the extension limiting groove 21211, the pressing piece 2133 abuts against the vertical section 2141. By rotating the locking sleeve 214, the pressing piece 2133 abuts against the outer periphery of the locking sleeve 214, so that the first limiting column 2131 can be retracted and cooperates with the extension limiting groove 21211. Since the distance from the vertical section 2141 to the axis of the locking sleeve 214 is less than the radius of the locking sleeve 214, when the locking sleeve 214 is rotated counterclockwise by 120° as shown in the figure, the locking sleeve 214 moves away from the first seat body 2111, and the pressing piece 2133 is converted from abutting against the vertical section 2141 to abutting against the outer periphery of the locking sleeve 214. When the pressing piece 2133 drives the first limiting column 2131 to move away from the first connecting column 2112, the compression spring 2122 is compressed, so that the first limiting column 2131 cooperates with the extension limiting groove 21211. Thus, the first lock rod 2121 can drive the second lock body 22 to move along the axis of the first connecting hole 2113 towards the first seat body 2111 until the second seat body 223 abuts against the first seat body 2111, thereby locking the adjacent two cabinet frame 1. Figure 6

[0148] ​In an embodiment, the outer periphery of the first lock rod 2121 is further provided with a locking limiting groove 21213, the depth of the locking limiting groove 21213 is less than the depth of the extension limiting groove 21211, and the locking limiting groove 21213 extends along the length direction of the first lock rod 2121, and the extension limiting groove 21211 is arranged at the end of the locking limiting groove 21213 away from the connection between the first lock rod 2121 and the lock piece 221. By arranging the locking limiting groove 21213, the distance of the first lock rod 2121 driving the second lock body 22 to move along the axial direction of the first connecting hole 2113 after the first limiting column 2131 is disengaged from the extension limiting groove 21211 is limited.

[0149] In an embodiment, the outer periphery of the locking sleeve 214 is provided with a first operation handle 215, and the locking sleeve 214 is rotated through the first operation handle 215. By arranging the first operation handle 215, it is more convenient for the operator to rotate the locking sleeve 214, so that the locking and unlocking operations are more labor-saving.

[0150] In an embodiment, the opposite sides of the first operation handle 215 are respectively provided with a locking mark 2151 and an unlocking mark 2152. When operating, the operator holds the first operation handle 215 to rotate towards the side close to the unlocking mark 2152, and the unlocking can be realized; the operator holds the first operation handle 215 to rotate towards the side close to the locking mark 2151, and the locking can be realized. By arranging the locking mark 2151 and the unlocking mark 2152, the operator can more intuitively see the rotating direction of the first operation handle 215, and the operation is more convenient.

[0151] Specifically, the locking mark 2151 is arranged as a locked lock, and the unlocking mark 2152 is arranged as an open lock, and different colors are used for distinction, so as to be more intuitively distinguished by the operator.

[0152] Further, as shown in Figures 7-10 The arc lock mechanism includes an arc lock seat 31 and a latch lock assembly 32, the latch lock assembly 32 is arranged at one side of the arc lock seat 31, and the second lock rod assembly 39 is in cooperation with the latch lock assembly 32 for locking.

[0153] The radian lock mechanism provided by the embodiment further comprises a radian lock slider 33, a fixed pressing block 36 and an angle adjusting assembly. The radian lock lock seat 31 is provided with a first sliding groove 3111 extending in the circumferential direction, and the radian lock slider 33 is slidably arranged in the first sliding groove 3111. The two ends of the first sliding groove 3111 are arranged through the two side walls of the radian lock lock seat 31. One side of the radian lock slider 33 is provided with a latch assembly 32, so that the radian lock slider 33 slides in the first sliding groove 3111, which can drive the latch assembly 32 to slide to change the angle of the latch assembly 32, and further change the splicing angle of the two display screens. The radian lock slider 33 is provided with a first mounting hole 331 extending in the radial direction along the center line, and the fixed pressing block 36 is telescopically arranged in the first mounting hole 331. The angle adjusting assembly comprises an angle adjusting knob 34 and a connecting rod 35. The connecting rod 35 is arranged at one end of the angle adjusting knob 34, and the connecting rod 35 is rotatably connected with the radian lock slider 33 through the fixed pressing block 36. The fixed pressing block 36 and the cooperation end face of the angle adjusting knob 34 are provided with an angle locking position and an angle unlocking position. Rotating the angle adjusting knob 34 can selectively cooperate the angle adjusting knob 34 with the angle locking position or the angle unlocking position, and the fixed pressing block 36 can be fixed or released with the radian lock lock seat 31. When the angle adjusting knob 34 cooperates with the angle locking position on the fixed pressing block 36, the fixed pressing block 36 moves towards the radian lock slider 33 and is retracted into the first mounting hole 331. The fixed pressing block 36 can be fixed with the radian lock lock seat 31, so as to fix the angle of the radian lock slider 33. When adjusting the angle, the angle adjusting knob 34 cooperates with the angle unlocking position on the fixed pressing block 36, and the fixed pressing block 36 moves out of the first mounting hole 331 and moves away from the radian lock slider 33, so that the fixed pressing block 36 is released from the radian lock lock seat 31. At this time, the radian lock slider 33 is moved along the first sliding groove 3111 by the angle adjusting knob 34, so as to adjust the angle of the radian lock slider 33, and further adjust the angle of the latch assembly 32, so as to adjust the splicing angle of the adjacent two cabinet frames 1.

[0154] When adjusting the angle of the radian lock slider 33, the radian lock device 3 only needs to rotate the angle adjusting knob 34 to unlock the radian lock slider 33. Then the radian lock slider 33 is moved along the first sliding groove 3111 by the angle adjusting knob 34 to adjust the angle. After the angle is adjusted, the fixed pressing block 36 is fixed with the radian lock lock seat 31 by rotating the angle adjusting knob 34 in the opposite direction, so as to fix the angle of the radian lock slider 33. The operation is simple, and the angle adjusting efficiency is improved.

[0155] As Figure 11As shown, the fixed pressure block 36 includes a pressure head 361 and a first sleeve 362. The first sleeve 362 is located at one end of the pressure head 361, and the outer diameter of the first sleeve 362 is smaller than the outer diameter of the pressure head 361. The first sleeve 362 is provided with a through hole 3621 that passes through the pressure head 361. The top of the arc lock seat 31 is provided with a first clearance groove 3121 that extends along the extension direction of the first slide groove 3111. The pressure head 361 is located between the angle adjustment knob 34 and the arc lock seat 31. The first sleeve 362 enters the first mounting hole 331 through the first clearance groove 3121. The connecting rod 35 passes through the through hole 3621 and enters the first mounting hole 331 to be rotatably connected to the arc lock slider 33. The structure utilizes the rotation of the angle adjustment knob 34 to both fix the arc lock slider 33 to the arc lock seat 31 using the fixing block 36, and to release the arc lock slider 33 from the arc lock seat 31 using the fixing block 36. This eliminates the need to remove and install screws when adjusting the angle, thus improving the efficiency of angle adjustment.

[0156] Specifically, the first sleeve 362 is telescopically mounted within the first mounting hole 331 via a first spring 37. The first mounting hole 331 is a stepped hole, and the first spring 37 is sleeved on the outer periphery of the connecting rod 35. One end of the first spring 37 abuts against the end of the first sleeve 362 away from the pressure head 361, and the other end abuts against the stepped surface of the stepped hole. When the fixed pressure block 36 is subjected to pressure from the angle adjustment knob 34, the first spring 37 is compressed, and the pressure head 361 moves towards the arc lock seat 31 and is fixed to the top of the arc lock seat 31. When the force exerted by the angle adjustment knob 34 on the fixed pressure block 36 is released, under the elastic force of the first spring 37, the pressure head 361 moves away from the arc lock seat 31 and is released from its fixation to the top of the arc lock seat 31.

[0157] A stepped hole is provided through the arc lock slider 33. The end of the connecting rod 35 away from the angle adjustment knob 34 is provided with a threaded hole 351. The limiting screw 38 extends into the small hole of the stepped hole and is screwed into the threaded hole 351. The connecting rod 35 can rotate relative to the small hole of the stepped hole. The limiting head 21311 of the limiting screw 38 is located at the outer end of the small hole of the stepped hole, which is used to limit the axial movement of the angle adjustment component along the first mounting hole 331, thereby realizing the rotational connection between the angle adjustment component and the arc lock slider 33.

[0158] Of course, in other embodiments, a bearing can also be installed in the small hole of the stepped hole, and the connecting rod 35 is interference-fitted with the inner hole of the bearing, so that the connecting rod 35 can rotate relative to the first mounting hole 331.

[0159] Along the extension direction of the first avoiding groove 3121, the two sides of the outside of the first avoiding groove 3121 are provided with the first press-fit teeth 3122, and the end of the pressing head 361 close to the first sleeve 362 is provided with the second press-fit teeth 3611, the first press-fit teeth 3122 and the second press-fit teeth 3611 cooperate, and can fix the fixed pressing block 36 and the arc lock seat 31. When the fixed pressing block 36 is subjected to the force of the angle adjusting knob 34, the first sleeve 362 is retracted to the first mounting hole 331, the second press-fit teeth 3611 on the pressing head 361 can be matched and fixed with the corresponding first press-fit teeth 3122. When the force on the fixed pressing block 36 is relaxed, the pressing head 361 moves away from the arc lock slider 33 under the elastic force of the first spring 37, so that the second press-fit teeth 3611 are disengaged from the first press-fit teeth 3122. It should be noted that the number of the first press-fit teeth 3122 is much larger than the number of the second press-fit teeth 3611. The second press-fit teeth 3611 cooperate with the corresponding number of the first press-fit teeth 3122 to ensure the stability of the fixation. When the angle adjusting knob 34 drives the arc lock slider 33 to move to adjust the angle, the second press-fit teeth 3611 cooperate with another part of the first press-fit teeth 3122.

[0160] Of course, in other embodiments, the fixed pressing block 36 and the arc lock seat 31 can also be matched and fixed by means of a clamping groove and a clamping block.

[0161] Further, the arc lock slider 33 is also provided with a second positioning bead 332, the second positioning bead 332 is arranged on both sides of the first mounting hole 331, and along the extension direction of the first avoiding groove 3121, the two sides of the inside of the first avoiding groove 3121 are arranged with a plurality of slider positioning holes 3123 at intervals, and the second positioning bead 332 can selectively cooperate with one of the slider positioning holes 3123. After the arc lock slider 33 moves to a specified angle, the second positioning bead 332 cooperates with the slider positioning hole 3123 at the corresponding angle position to realize precise positioning and ensure the angle adjustment accuracy.

[0162] As shown in Figure 12 and Figure 13 The arc lock seat 31 includes a third seat body 311 and an upper cover 312, the third seat body 311 and the upper cover 312 are detachably connected by a first screw, the third seat body 311 is provided with a first sliding groove 3111, and the arc lock slider 33 is arranged in the first sliding groove 3111, and then the upper cover 312 is connected with the third seat body 311 by the first screw, so as to facilitate the installation of the arc lock slider 33. The first avoiding groove 3121 is arranged on the upper cover 312, the first press-fit teeth 3122 are arranged on the outer wall of the upper cover 312, and the slider positioning hole 3123 is arranged on the inner wall of the upper cover 312.

[0163] As shown in Figure 14As shown, the angle adjusting assembly provided by the embodiment includes a first locking plane 3612 in the angle locking position, and a first unlocking plane 3613 in the angle unlocking position. The height of the first unlocking plane 3613 is lower than that of the first locking plane 3612. The first locking plane 3612 is provided with two first locking planes 3612, and the first unlocking plane 3613 is located between the two first locking planes 3612. Since the angle adjusting assembly and the arc lock slider 33 are fixed in the axial position, that is, the angle adjusting knob 34 cannot move towards or away from the arc lock slider 33, when the angle adjusting knob 34 is rotated to abut against the first locking plane 3612, the pressing head 361 moves towards the upper cover 312, compresses the first spring 37, and the second pressing tooth 3611 on the pressing head 361 can cooperate with the first pressing tooth 3122 at the corresponding position on the upper cover 312 to fix the angle of the arc lock slider 33. When the angle adjusting knob 34 is rotated to the first unlocking plane 3613, the height of the first unlocking plane 3613 is lower than that of the first locking plane 3612, and the pressing head 361 will have a displacement towards the angle adjusting knob 34 under the elastic restoring force of the first spring 37 until the angle adjusting knob 34 abuts against the first unlocking plane 3613. The angle adjusting knob 34 is rotated by 120° from the first locking plane 3612 to the first unlocking plane 3613. The first locking plane 3612 with a higher height is arranged on both sides of the first unlocking plane 3613, and does not affect the abutment of the angle adjusting knob 34 and the first unlocking plane 3613 with a lower height.

[0164] Further, one end of the first locking plane 3612 is provided with a limiting block 3614, and the limiting blocks 3614 of the two first locking planes 3612 are diagonally arranged. The limiting block 3614 is used for limiting the rotation angle of the angle adjusting knob 34, and ensuring the stability of the angle of the arc lock slider 33 when the angle is fixed. The positions of the two limiting blocks 3614 are set according to the rotation direction of the angle adjusting knob 34. Since the first unlocking plane 3613 is arranged between the two first locking planes 3612, and the heights of the two first locking planes 3612 are higher than that of the first unlocking plane 3613, the limiting structure is not required to be arranged on the first unlocking plane 3613, and the first locking planes 3612 on both sides can limit the angle adjusting knob 34 located on the first locking plane 3612.

[0165] Further, a transition inclined surface 3615 is arranged between the first locking plane 3612 and the first unlocking plane 3613, and the two transition inclined surfaces 3615 are diagonally arranged at the first unlocking plane 3613. The arrangement of the transition inclined surface 3615 makes the rotation of the angle adjusting knob 34 more smooth and stable between the first locking plane 3612 and the first unlocking plane 3613.

[0166] In order to ensure the accuracy of the rotation position of the angle adjusting knob 34, the cooperation surface of the angle adjusting knob 34 and the fixed block 36 is provided with a first positioning bead 341, the first locking plane 3612 is further provided with a locking positioning hole 36121, and the first unlocking plane 3613 is further provided with an unlocking positioning hole 36131. The first positioning bead 341 can cooperate with the locking positioning hole 36121 or the unlocking positioning hole 36131. When the angle adjusting knob 34 rotates from the first locking plane 3612 to the first unlocking plane 3613, when the first positioning bead 341 slides into the unlocking positioning hole 36131, it indicates that the angle adjusting knob 34 is rotated to the right position, ensuring the accuracy of the unlocking position of the angle adjusting knob 34, avoiding affecting the angle adjustment of the radian lock slider 33. When the angle adjusting knob 34 rotates from the first unlocking plane 3613 to the first locking plane 3612, when the first positioning bead 341 slides into the locking positioning hole 36121, it indicates that the angle adjusting knob 34 is rotated to the right position, ensuring the accuracy of the locking position of the angle adjusting knob 34, ensuring the accuracy of the angle of the radian lock slider 33.

[0167] It should be noted that the first positioning bead 341 and the second positioning bead 332 are also called ball head plunger or spring plunger, which is a load device composed of shell, spring, ball or column.

[0168] As shown in Figure 10 , Figure 15 and Figure 19 , the latch lock assembly 32 includes a latch plate 321, the latch plate 321 is provided with a second lock hole 3211, the second lock rod assembly 39 includes a lock rod mounting plate 392 and a second lock rod 391, the second lock rod 391 is arranged at the center of the lock rod mounting plate 392, and the two ends of the second lock rod 391 extend out of the lock rod mounting plate 392. One end of the second lock rod 391 can cooperate with the second lock hole 3211 to lock, and the other end is provided with a locking handle 393. By rotating the second lock rod 391 through the locking handle 393, the second lock rod 391 can be locked with the second lock hole 3211. One side of the radian lock slider 33 is provided with a second sliding groove 333 extending in the radial direction, and the latch plate 321 is telescopically arranged in the second sliding groove 333, so that the latch plate 321 can be telescopically arranged along the radial direction of the radian lock slider 33.

[0169] Specifically, the latch assembly 32 further comprises a second spring 324, the latch plate 321 is arranged in an L shape, the long arm of the L shape extends into the second sliding groove 333, and the short arm is located outside the second sliding groove 333 to form a handle 3212 of the latch plate 321. The second spring 324 is located between the bottom of the second sliding groove 333 and the long arm of the L shape, the second lock hole 3211 comprises a first through hole 32111 and a clamping hole 32112 which are in communication with each other, the diameter of the clamping hole 32112 is smaller than that of the first through hole 32111, and the clamping hole 32112 is arranged close to the center of the arc lock slider 33. When the second lock rod 391 is inserted into the first through hole 32111, the latch plate 321 is clamped into the clamping hole 32112 under the elastic force of the second spring 324, at this time, it is in a locked state. When unlocking, press the handle 3212 downward to compress the second spring 324, and the second lock rod 391 is separated from the clamping hole 32112, thereby achieving unlocking.

[0170] In the embodiment, one end of the arc lock slider 33 is provided with an extension 334 extending towards the center of the circle, and the inner side and the top of the extension 334 are open. The latch assembly 32 further comprises a latch plate side plate 322 and a latch plate cover plate 323. The latch plate side plate 322 is arranged in an L shape, and the outer side wall of the extension 334 and the L-shaped latch plate side plate 322 enclose the second sliding groove 333. The latch plate cover plate 323 is arranged on the top of the second sliding groove 333. The long arm of the L-shaped latch plate 321 close to the short arm has a smaller width, and the latch plate cover plate 323 is provided with an avoiding long hole matching the width of the long arm of the L-shaped latch plate 321 close to the short arm. The long arm of the L-shaped latch plate side plate 322 and the outer side wall of the extension 334 are oppositely arranged, and both are provided with avoiding holes 3341 avoiding the second lock rod 391. Such arrangement facilitates the installation of the latch plate 321 and the second spring 324.

[0171] As shown in Figure 16 To ensure the accuracy of angle adjustment, the first avoiding groove 3121 is further provided with angle scale lines 3124 on both sides, and the opposite sides of the pressing head 361 are provided with alignment blocks 3616, and the alignment blocks 3616 are provided with sharp ends. When the angle adjustment knob 34 and the first unlocking plane 3613 abut and unlock the arc lock slider 33, the arc lock slider 33 is moved in the first sliding groove 3111 by the angle adjustment knob 34, and when the sharp ends of the alignment blocks 3616 are aligned with the specified angle on the angle scale lines 3124, the movement is stopped. Then rotate the angle adjustment knob 34 so that the angle adjustment knob 34 abuts with the first locking plane 3612, that is, the angle adjustment of the latch assembly 32 is completed.

[0172] Exemplarily, as shown in Figure 8As shown, the locking angle of the arc lock device 3 is 0° at this time, that is, the splicing angle of the adjacent two display screens connected by the arc lock device 3 is 0°, which is horizontal splicing. As shown in Figure 17 As shown, the locking angle of the arc lock device 3 is -10° at this time, that is, the splicing angle of the adjacent two display screens connected by the arc lock device 3 is -10°; As shown in Figure 18 As shown, the locking angle of the arc lock device 3 is 15° at this time, that is, the splicing angle of the adjacent two display screens connected by the arc lock device 3 is 15°.

[0173] As shown, specifically, the opposite sides of the box frame 1 are respectively provided with mounting racks 12, the arc lock seat 31 of the arc lock mechanism is fixed on the mounting rack 12 on one side, and the lock rod mounting plate 392 of the second lock rod assembly 39 is connected with the mounting rack 12 on the other side. Figure 19 The arc lock mechanism of one of the adjacent two box frames 1 is connected with the second lock rod assembly 39 of the other, so as to lock the two box frames 1. Meanwhile, the arc lock device 3 can also adjust the splicing angle of the two box frames 1, and the operation is convenient, which improves the angle adjustment efficiency.

[0174] Further, as shown in the figure, the display screen further comprises a display module 4, which is arranged on the front side of the box frame 1. The display module 4 comprises a first bottom shell 41 and an LED lamp plate 42, and the LED lamp plate 42 is arranged on the front side of the first bottom shell 41 and is provided with lamp beads.

[0175] Figures 20-22 In order to protect the lamp beads on the edge of the LED lamp plate 42 from falling off or being damaged due to micro collision or external force, and to affect the product quality, as shown in the figure, As shown in the figure, the box frame 1 is applied to the display screen, and comprises a frame body 13 and a protection mechanism 14. The protection mechanism 14 is arranged at both ends of the frame body 13 along the first direction, so as to protect the lamp beads on the edge of the LED lamp plate 42. The protection mechanism 14 is telescopically arranged on the frame body 13. When the display screens are stacked and spliced, the protection mechanisms 14 on the adjacent two frame bodies 13 abut against each other, so that the two protection mechanisms 14 are automatically retracted to be flush with the end of the frame body 13, without affecting the splicing of the display screens. When the display screen is placed alone, the protection mechanism 14 is automatically extended to the front side of the display module 4 to protect the lamp beads on the edge of the LED lamp plate 42.

[0176] Figure 21 The protection mechanism 14 comprises a protection plate 141, a connecting rack 142 and a first elastic member 143. The protection plate 141 extends along the length direction of the end of the frame body 13, so as to fully cover the lamp beads on the edge of the display module 4. As shown in the figure,

[0177] The protection mechanism 14 comprises a protection plate 141, a connecting rack 142 and a first elastic member 143. The protection plate 141 extends along the length direction of the end of the frame body 13, so as to fully cover the lamp beads on the edge of the display module 4. As shown in the figure, Figures 21-25 ​As shown, the connecting frame 142 is located on one side of the protective plate 141. The frame body 13 is provided with a receiving cavity 131. The first elastic member 143 is located in the receiving cavity 131 and is connected to the connecting frame 142. The extension and retraction direction of the first elastic member 143 is set at a preset angle with the protective plate 141, so that the elastic driving force of the first elastic member 143 on the protective plate 141 is in the inclined direction. When the first elastic member 143 extends and drives the connecting frame 142 to extend out of the receiving cavity 131, the protective plate 141 moves forward and moves away from the frame body 13. When the connecting frame 142 is retracted by the receiving cavity 131 and compresses the first elastic member 143, the protective plate 141 moves backward and moves closer to the frame body 13. This achieves effective protection of the display module 4 when the protective plate 141 extends and can be stored at the end of the frame body 13 when retracted, without affecting the stacking and splicing of the cabinet frame 1. When subjected to force, the connecting frame 142 retracts into the receiving cavity 131 and compresses the first elastic element 143; the first elastic element 143 drives the connecting frame 142 to extend out of the receiving cavity 131, so that the connecting frame 142 drives the protective plate 141 to extend to the front of the display module 4. When the cabinet frames 1 are stacked, the protective mechanisms 14 of two adjacent cabinet frames 1 abut against each other, realizing the automatic retraction of the connecting frame 142 and the protective plate 141; when two adjacent cabinet frames 1 are separated, the connecting frame 142 is tilted out under the action of the elastic restoring force of the first elastic element 143, realizing the automatic extension of the protective plate 141 to protect the display module 4; no manual operation by the installer is required, improving installation efficiency.

[0178] The receiving cavity 131 is located on the rear side of the frame body 13, which makes the frame body 13 compatible with the base function of the protection mechanism 14, reducing accessories and lowering costs; at the same time, it makes the connection of the protection plate 141 more stable and reliable.

[0179] Furthermore, the end of the first bottom shell 41 is provided with a receiving groove 411, and the protective plate 141 can retract into the receiving groove 411. In order to ensure that the protective plate 141 can be flush with the end of the display screen when it retracts, a receiving groove 411 is provided at the end of the first bottom shell 41. When the protective mechanisms 14 abut against each other, the connecting frame 142 compresses the first elastic member 143 and retracts into the receiving cavity 131. The protective plate 141 retracts to the rear side and moves downward into the receiving groove 411, so as not to affect the splicing of the adjacent cabinet frame 1.

[0180] Specifically, there are two connecting brackets 142, which are located at both ends of the same side of the protective plate 141. The protective plate 141 is connected by the two connecting brackets 142 to ensure the stability of the protective plate 141 when it is driven to extend or retract.

[0181] In an embodiment, the bottom surface of the accommodating cavity 131 is an inclined surface 1311, the inclined surface 1311 is at a preset angle with the protection plate 141, the bottom surface of the connecting frame 142 is parallel to the inclined surface 1311; and the inclined surface 1311 is provided with a first groove 13111, the bottom surface of the first groove 13111 is parallel to the inclined surface 1311, the first elastic member 143 is arranged in the first groove 13111, the bottom surface of the connecting frame 142 is provided with a second connecting column 1421, the second connecting column 1421 is inserted into the first elastic member 143 along a direction perpendicular to the inclined surface 1311. The first elastic member 143 is a spring, the second connecting column 1421 is inserted between the spirals of the spring, when the connecting frame 142 is subjected to a pressing force, the connecting frame 142 drives the second connecting column 1421 to compress the spring, and the connecting frame 142 is retracted into the accommodating cavity 131; when the pressing force on the connecting frame 142 is removed, the connecting frame 142 is driven by the second connecting column 1421 to extend out of the accommodating cavity 131 under the elastic restoring force of the spring, and then the protection plate 141 is moved to the front side of the display module 4 in a direction away from the accommodating groove 411.

[0182] Exemplarily, the preset angle is 45°, the longitudinal section of the connecting frame 142 is an isosceles triangle, the first elastic member 143 is connected to the hypotenuse of the isosceles triangle, so that the force of the first elastic member 143 on the connecting frame 142 is inclined upward. Of course, in other embodiments, the preset angle can also be 30° or 60°, which is specifically designed according to the moving distance of the protection plate 141.

[0183] In an embodiment, the connecting frame 142 is provided with a guide groove 1422 with a center line parallel to the inclined surface 1311, and the accommodating cavity 131 is provided with a guide member, the guide member cooperates with the guide groove 1422 to provide guidance for the movement of the protection plate 141. When the guide member abuts against one end of the guide groove 1422, the protection plate 141 extends to a first limit position, and when the guide member abuts against the other end of the guide groove 1422, the protection plate 141 retracts to a second limit position. By arranging the guide member, the limit positions of the connecting frame 142 during extension and retraction are limited, so as to ensure that the protection plate 141 extends to the limit position on the front side of the display module 4, and retracts to the limit position in the accommodating groove 411. The guide groove 1422 is arranged on the side plate of the connecting frame 142.

[0184] Further, the guide members are arranged at intervals, one of which can abut against one end of the guide groove 1422, and the other of which can abut against the other end of the guide groove 1422. The two guide members limit the first limit position when the connecting frame 142 extends and the second limit position when the connecting frame 142 retracts, and at the same time provide a guiding effect for the movement of the connecting frame 142, so that the connecting frame 142 moves stably along the inclined surface 1311 during movement and does not deviate.

[0185] In an embodiment, two adjacent sides of the accommodating cavity 131 are provided as openings, one of which is a telescopic entrance of the connecting frame 142, and the other is an installation entrance of the connecting frame 142, which is closed by the baffle 133; the guiding piece is connected to the baffle 133 at one end after passing through the guiding groove 1422, and connected to the side wall of the accommodating cavity 131 opposite to the baffle 133 at the other end. The accommodating cavity 131 is directly formed on the frame body 13, and has a fixing function of the protection mechanism 14. In order to facilitate the installation and telescoping of the connecting frame 142, two adjacent sides of the accommodating cavity 131 are provided as openings, and when the connecting frame 142 is installed, the connecting frame 142 enters the accommodating cavity 131 from the installation entrance. The baffle 133 is provided with a second connecting hole 1331 in the circumferential direction, and the fixing screw 135 is fixedly connected to the installation entrance of the accommodating cavity 131 by passing through the second connecting hole 1331. The guiding piece is provided as a guiding screw 132, and the baffle 133 is provided with a second through hole 1332. The guiding screw 132 passes through the second through hole 1332 and the guiding groove 1422, and is then screwed to the side wall of the accommodating cavity 131 opposite to the baffle 133. The head of the guiding screw 132 is clamped on the baffle 133.

[0186] After the protection plate 141 extends to the front side of the display module 4, in order to avoid the protection plate 141 from retracting due to accidental touch by the installer, the effective protection of the lamp beads cannot be achieved. The protection mechanism 14 further comprises a second limiting assembly 144, which is telescopically arranged on the frame body 13. The protection plate 141 is provided with a second limiting hole 1411, and the second limiting assembly 144 is used to cooperate with the second limiting hole 1411 when the protection plate 141 extends to the front side of the display module 4 to fix the protection plate 141. The second limiting assembly 144 is telescopically arranged. Only when the protection plate 141 extends to the front side of the display module 4, the second limiting assembly 144 can extend to cooperate with the second limiting hole 1411 to fix the protection plate 141, preventing the protection plate 141 from retracting due to accidental touch. When the protection plate 141 retracts into the accommodating groove 411, the second limiting assembly 144 retracts, without affecting the movement of the protection plate 141 to the rear side.

[0187] In an embodiment, the frame body 13 is provided with a second mounting hole 134 perpendicular to the protection plate 141 along the center line, and a second limiting assembly 144 is arranged in the second mounting hole 134. The second limiting assembly 144 comprises a second limiting column 1441 and a second limiting spring 1442. The second limiting column 1441 comprises a limiting end and a second column body 14411. The outer diameter of the limiting end is larger than that of the second column body 14411. The second limiting spring 1442 is sleeved outside the second column body 14411. One end of the second limiting spring 1442 is connected with the second mounting hole 134, and the other end is in abutment with the limiting end. The end of the limiting end away from the second column body 14411 can be in abutment with the second limiting hole 1411. When the protection mechanisms 14 on the adjacent two box body frames 1 abut against each other, the second limiting column 1441 can be retracted into the second mounting hole 134 and disengaged from the second limiting hole 1411 under the abutting pressure. When the external force on the second limiting column 1441 is removed, i.e., when the adjacent two box body frames 1 are separated, the second limiting column 1441 can extend out of the second mounting hole 134 and be engaged with the second limiting hole 1411 to fix the protection plate 141 under the elastic restoring force of the second limiting spring 1442.

[0188] The second mounting hole 134 is a stepped hole comprising a first hole, a second hole and a third hole with increasing diameters. The second limiting spring 1442 is arranged in the second hole. One end of the second limiting spring 1442 is in abutment with the connection between the second hole and the first hole, and the other end is in abutment with the limiting end, so that the limiting end is slidably arranged in the third hole.

[0189] In an embodiment, the limiting end comprises a limiting portion 14412 and a pressing portion 14413, the limiting portion 14412 is arranged between the second cylinder 14411 and the pressing portion 14413, and the outer diameter of the limiting portion 14412 is greater than the outer diameter of the pressing portion 14413, the limiting portion 14412 can abut with the second limiting hole 1411; by pressing the second limiting column 1441 through the pressing portion 14413, the limiting portion 14412 can be disengaged from the abutment with the second limiting hole 1411. The protection plate 141 is also provided with a second avoiding slot 1412, the second avoiding slot 1412 extends along the moving direction of the protection plate 141. When the box body frame 1 is stacked, the two pressing portions 14413 abut with each other, so that the second limiting column 1441 is retracted into the second mounting hole 134, and by arranging the second avoiding slot 1412, in the process of retracting the protection plate 141 with the connecting frame 142, the pressing portion 14413 is located in the second avoiding slot 1412, and the protection plate 141 will not be retracted. The second limiting hole 1411 is arranged on the side of the second avoiding slot 1412 close to the second mounting hole 134, and the second limiting hole 1411 is located on the side of the second avoiding slot 1412 close to the connecting frame 142, when the protection plate 141 extends to the first limit position on the front side of the display module 4, the stepped surface between the limiting portion 14412 and the pressing portion 14413 abuts with the hole bottom of the second limiting hole 1411, so as to fix the protection plate 141, so that the protection plate 141 will not be retracted when being touched by mistake by the installer.

[0190] Further, as shown in Figures 26-29 the box body frame 1 of the embodiment is in a frame structure, a plurality of display module mounting positions are arranged in the box body frame 1, one display module 4 is arranged on each display module mounting position, and the box body frame 1 is suitable for outdoor large display screen.

[0191] A plurality of magnets 15 are arranged on the front surface of the display module mounting position in a circumferential direction, and correspondingly, a plurality of iron sheets 414 are arranged on the display module 4 in a circumferential direction, and the iron sheets 414 are magnetically connected with the magnets 15, so as to magnetically connect the display module 4 with the display module mounting position.

[0192] In order to prevent the display module 4 from falling accidentally due to the disappearance of the magnetism of the magnet 15 and the like, the display module mounting position is also provided with a clamping position 16, which is used for clamping and cooperating with the display module 4, so as to realize mechanical connection, so as to avoid the display module 4 from falling accidentally.

[0193] As shown in Figures 30-32As shown, the display module 4 is applied to the display screen, and the display module 4 further comprises a rear cover 44 and a locking device 45. The LED lamp plate 42 is installed on the front side of the first bottom shell 41, and a maintenance hole 43 is arranged through the LED lamp plate 42 and the first bottom shell 41. The rear cover 44 is connected to the rear side of the first bottom shell 41, and the area of the rear cover 44 is smaller than the area of the first bottom shell 41. The rear cover 44 is fixed to the center position of the first bottom shell 41 by the first screw 47. The iron sheet 414 for magnetic attraction connection with the magnet 15 of the cabinet frame 1 is arranged on the circumference of the first bottom shell 41. The locking device 45 is arranged between the first bottom shell 41 and the rear cover 44. The locking device 45 is matched with the clamping position 16 on the cabinet frame 1, so as to realize the mechanical connection between the display module 4 and the cabinet frame 1, and prevent the display module 4 from falling accidentally.

[0194] The locking device 45 comprises a dismounting shaft 451, a first locking piece 452 and a second locking piece 453. The dismounting shaft 451 is provided with a transmission part and a maintenance part 4512. The first locking piece 452 and the second locking piece 453 are matched with the transmission part at the end close to each other. When the dismounting shaft 451 rotates, the transmission part drives the first locking piece 452 and the second locking piece 453 to move in the direction close to or away from each other. The first locking piece 452 and the second locking piece 453 are provided with clamping parts at the end away from each other. The rear cover 44 is provided with a clearance corresponding to the clamping part. When the first locking piece 452 and the second locking piece 453 move in the direction away from each other, the clamping parts at the end of the first locking piece 452 and the second locking piece 453 away from each other can pass through the clearance on the rear cover 44 and be clamped with the clamping position 16 on the cabinet frame 1, so as to lock the display module 4 and the cabinet frame 1. When the first locking piece 452 and the second locking piece 453 move in the direction close to each other, the clamping parts are disengaged from the clamping position 16, so as to unlock the display module 4 and the cabinet frame 1.

[0195] The maintenance hole 43 is provided corresponding to the maintenance part 4512. The maintenance thimble 46 passes through the maintenance hole 43 and applies force to the maintenance part 4512, so as to rotate the dismounting shaft 451, and drive the first locking piece 452 and the second locking piece 453 to move in the direction close to or away from each other, so as to realize quick unlocking and locking. The maintenance thimble 46 only needs to apply force to the maintenance part 4512 in the direction perpendicular to the LED lamp plate 42, without applying torque. Therefore, the hole diameter of the maintenance hole 43 does not need to be too large, and is suitable for the display module 4 with small pixel pitch. The display module 4 can realize front maintenance of the display module 4 with small pixel pitch, and improve the dismounting efficiency of the display screen.

[0196] In an embodiment, the transmission part comprises a gear structure 4511 arranged on the outer periphery of the dismounting shaft 451, the first locking member 452 is provided with a first rack structure 4522 at one end close to the second locking member 453, the second locking member 453 is provided with a second rack structure 4532 at one end close to the first locking member 452, the first rack structure 4522 is located at one side of the gear structure 4511 close to the rear cover 44 and engages with the gear structure 4511, and the second rack structure 4532 is located at one side of the gear structure 4511 close to the first bottom shell 41 and engages with the gear structure 4511. When the dismounting shaft 451 rotates, the gear structure 4511 rotates, and since the first rack structure 4522 is located at the rear side of the gear structure 4511 and the second rack structure 4532 is located at the front side of the gear structure 4511, when the gear structure 4511 rotates in the same direction, the first rack structure 4522 and the second rack structure 4532 move in opposite directions, thereby driving the first locking member 452 and the second locking member 453 to move in directions away from or close to each other, and further realizing the clamping or unclamping of the clamping part and the clamping position 16 to realize the locking or unlocking of the display module 4 and the box frame 1. The locking device 45 only needs to rotate the dismounting shaft 451 when locking or unlocking the display module 4, which is convenient to operate and improves the dismounting efficiency of the display module 4.

[0197] Of course, in other embodiments, the transmission part can also be provided as two coil springs wound on the dismounting shaft 451 and extending in opposite directions, one end of one of the two coil springs is connected with the first locking member 452, and the other end of the other coil spring is connected with the second locking member 453, and rotating the dismounting shaft 451 can also realize the movement of the first locking member 452 and the second locking member 453 in directions close to or away from each other. Or through gear transmission, cam transmission and connecting rod transmission and other structures to realize the movement of the first locking member 452 and the second locking member 453 in directions close to or away from each other.

[0198] In an embodiment, the gear structure 4511, the first rack structure 4522 and the second rack structure 4532 are each provided with two, and the maintenance part 4512 is arranged between the two gear structures 4511, which can ensure the stability of the movement of the first locking member 452 and the second locking member 453 and ensure that the clamping part can be smoothly clamped or unclamped with the clamping position 16.

[0199] In an embodiment, the locking device 45 further comprises a second operating handle 454, an open end of the second operating handle 454 is connected with the dismounting shaft 451, and both gear structures 4511 are located outside the open end of the second operating handle 454. By rotating the second operating handle 454 to drive the dismounting shaft 451 to rotate, it is more convenient for the operator to manually apply force, so that the operator can realize the dismounting of the display module 4 from the rear side of the display module 4, that is, the display module 4 can realize front maintenance and rear maintenance.

[0200] Further, the rear cover 44 is provided with a third avoiding slot 443 corresponding to the second operating handle 454. In this way, the operator can hold the second operating handle 454 to rotate the dismounting shaft 451 from the rear side of the display module 4 without dismounting the rear cover 44, which further improves the dismounting efficiency.

[0201] The third avoiding slot 443 is a U-shaped slot, and a second recess 444 with the same depth as the third avoiding slot 443 and communicating with the bottom of the third avoiding slot 443 is arranged on each of the opposite sides of the bottom of the U-shaped slot, so that the operator can hold the second operating handle 454 with his hands in the two second recesses 444.

[0202] Specifically, the clamping part comprises a first clamping part 4521 and a second clamping part 4531, the first clamping part 4521 is arranged on the first locking piece 452, and the second clamping part 4531 is arranged on the second locking piece 453. The avoiding opening comprises a first avoiding opening 441 and a second avoiding opening 442, the first avoiding opening 441 and the second avoiding opening 442 are arranged on opposite ends of the rear cover 44, the first clamping part 4521 extends out of the rear cover 44 through the first avoiding opening 441 and is clamped with the clamping position 16 on one side of the cabinet frame 1, and the second clamping part 4531 extends out of the rear cover 44 through the second avoiding opening 442 and is clamped with the clamping position 16 on the other side of the cabinet frame 1.

[0203] The first locking piece 452 comprises a first locking frame and two spaced first bottom plates, the first locking frame is connected to one end of the two first bottom plates, and the first rack structure 4522 is arranged on the end of the first bottom plate away from the first locking frame. The first locking frame has a certain height, the first clamping part 4521 extends outward from the end of the first locking frame away from the first rack structure 4522, and is located on the side of the first locking frame away from the first bottom plate.

[0204] The second locking member 453 comprises a second locking frame and two second bottom plates which are spaced apart. The second locking frame is connected to one end of the two second bottom plates, and the second rack structure 4532 is arranged at the end of the second bottom plate away from the second locking frame. The second locking frame has a certain height, and the second clamping portion 4531 extends outward from the end of the second locking frame away from the second rack. The second clamping portion 4531 is located on the side of the second locking frame away from the second bottom plate.

[0205] In assembly, the first locking member 452 and the second locking member 453 are arranged opposite to each other, that is, the first bottom plate is located at the rear side of the dismounting shaft 451, and the second bottom plate is located at the front side of the dismounting shaft 451, so that the two gear structures 4511 on the dismounting shaft 451 outside the second operation handle 454 can cooperate with the first rack structure 4522 and the second rack structure 4532, and the maintenance portion 4512 between the two gear structures 4511 is not blocked. The first locking frame and the second locking frame are respectively located on the two sides of the dismounting shaft 451. In order to ensure the stability of the first locking member 452 and the second locking member 453 during movement, the two ends will not be deflected, the side of the first locking frame away from the first bottom plate abuts against the first bottom shell 41, and the side of the second locking frame away from the second bottom plate abuts against the rear cover 44.

[0206] In an embodiment, two first support blocks 413 are arranged on the first bottom shell 41 along the extension direction of the dismounting shaft 451, and the side of the first support block 413 away from the first bottom shell 41 is provided with a first support groove 4131. Two second support blocks are arranged on the rear cover 44 along the extension direction of the dismounting shaft 451, and the side of the second support block away from the rear cover 44 is provided with a second support groove. The first support groove 4131 and the second support groove are butted to form a support hole, the dismounting shaft 451 is supported in the two support holes, and the maintenance portion 4512 is located between the two support holes. Since the outer diameter of the maintenance portion 4512 is greater than the outer diameter of the dismounting shaft 451, the support hole is formed by the butt joint of the first support groove 4131 and the second support groove, which facilitates the installation of the dismounting shaft 451. When the second operation handle 454 drives the dismounting shaft 451 to rotate, the dismounting shaft 451 rotates relative to the support hole, thereby supporting the dismounting shaft 451 without affecting the rotation of the dismounting shaft 451 driven by the second operation handle 454.

[0207] Further, as shown in Figures 31-35 The dismounting shaft 451 is further provided with two second limiting rings 4513, the two second limiting rings 4513 are respectively arranged on the two sides of the maintenance portion 4512, and the sides of the two second limiting rings 4513 away from each other abut against the sides of the two support holes close to each other, so as to limit the axial movement of the dismounting shaft 451 during rotation, thereby preventing the dislocation of the maintenance portion 4512 and the maintenance hole 43, and preventing the maintenance needle 46 from applying force to the maintenance portion 4512 through the maintenance hole 43 to rotate the dismounting shaft 451.

[0208] In an embodiment, continuing to refer to Figures 33-35 , the maintenance hole 43 comprises an unlocking hole 431 and a locking hole 432, the unlocking hole 431 and the locking hole 432 are arranged at intervals, the maintenance part 4512 comprises a second unlocking plane 45121 and a second locking plane 45122, the second unlocking plane 45121 and the second locking plane 45122 are arranged at intervals along the circumferential direction of the dismounting shaft 451 by a preset angle; the unlocking hole 431 can correspond to the second unlocking plane 45121; the locking hole 432 can correspond to the second locking plane 45122. The unlocking hole 431 and the locking hole 432 are arranged separately, which is more convenient for the user to disassemble and assemble. Since the rotation directions of the dismounting shaft 451 are opposite when unlocking and locking, if only one maintenance hole 43 is arranged to realize both unlocking and locking, the operator also needs to distinguish the rotation direction of the dismounting shaft 451. Since the dismounting shaft 451 is located at the rear side of the LED lamp panel 42, the rotation direction of the dismounting shaft 451 cannot be accurately distinguished through the maintenance hole 43, which further causes the rotation direction of the dismounting shaft 451 to be wrong, resulting in unlocking when locking, increasing the risk of accidental falling of the display module 4, and the safety is low.

[0209] When the maintenance pin 46 passes through the unlocking hole 431, the maintenance pin 46 can abut against the second unlocking plane 45121, and an action force perpendicular to the direction of the LED lamp panel 42 is applied to the second unlocking plane 45121, so that the dismounting shaft 451 can rotate in the clockwise direction as shown in Figure 34 , and drive the first locking part 452 and the second locking part 453 to move in the direction of approaching each other, so that the first clamping part 4521 and the second clamping part 4531 are respectively separated from the clamping positions 16 on both sides of the cabinet frame 1, thereby realizing the unlocking of the display module 4 and the cabinet frame 1.

[0210] When the maintenance pin 46 passes through the locking hole 432, the maintenance pin 46 can abut against the second locking plane 45122, and an action force perpendicular to the direction of the LED lamp panel 42 is applied to the second locking plane 45122, so that the dismounting shaft 451 can rotate in the counterclockwise direction as shown in Figure 35 , and drive the first locking part 452 and the second locking part 453 to move in the direction of moving away from each other, so that the first clamping part 4521 extends out of the first avoiding opening 441 and is clamped with the clamping position 16 on one side of the cabinet frame 1, and the second clamping part 4531 extends out of the second avoiding opening 442 and is clamped with the clamping position 16 on the other side of the cabinet frame 1, thereby realizing the locking of the display module 4 and the cabinet frame 1.

[0211] In an embodiment, continuing to refer to Figure 31 , Figures 33-35The maintenance part 4512 further comprises a connecting camber surface 45123 connecting the second unlocking plane 45121 and the second locking plane 45122, the first limiting groove 45124 is arranged at one end of the connecting camber surface 45123 close to the second unlocking plane 45121, and the second limiting groove 45125 is arranged at one end of the connecting camber surface 45123 close to the second locking plane 45122; the limiting protrusion 412 is arranged on one side of the first bottom shell 41 close to the dismounting shaft 451, and the limiting protrusion 412 is located between the unlocking hole 431 and the locking hole 432, when the limiting protrusion 412 slides into the first limiting groove 45124, the unlocking hole 431 corresponds to the second unlocking plane 45121; when the limiting protrusion 412 slides into the second limiting groove 45125, the locking hole 432 corresponds to the second locking plane 45122. By arranging the first limiting groove 45124 and the second limiting groove 45125, the angle of the dismounting shaft 451 rotating in the clockwise direction during unlocking is limited, and the angle of the dismounting shaft 451 rotating in the counterclockwise direction during locking is limited, so that the dismounting shaft 451 cannot continue to rotate after the first clamping part 4521 and the second clamping part 4531 are clamped or disengaged from the clamping position 16, preventing the first clamping part 4521 and the second clamping part 4531 from being damaged by the blocking force due to movement out of position; or the first rack structure 4522 and the second rack structure 4532 disengage from the gear structure 4511, resulting in transmission failure.

[0212] Exemplarily, the second unlocking plane 45121 and the second locking plane 45122 are spaced apart by a preset angle of 90° along the circumferential direction of the dismounting shaft 451, during unlocking, the dismounting shaft 451 rotates 90° in the clockwise direction, so that the display module 4 can be unlocked from the cabinet frame 1; during locking, the dismounting shaft 451 rotates 90° in the counterclockwise direction, so that the display module 4 can be locked with the cabinet frame 1.

[0213] In an embodiment, the maintenance hole 43 comprises a first hole 4301 and a second hole 4302 arranged concentrically and in communication, the first hole 4301 is arranged on the LED lamp panel 42, and the second hole 4302 is arranged on the first bottom shell 41, the inner diameter of the first hole 4301 is equal to the outer diameter of the maintenance needle 46, and the inner diameter of the second hole 4302 is greater than the inner diameter of the first hole 4301. In this way, the diameter of the first hole 4301 can be set smaller, and at the same time, when the maintenance hole 43 is slightly misaligned with the maintenance part 4512 due to machining or installation errors, the maintenance needle 46 can have a certain movement space in the second hole 4302, so that the head of the maintenance needle 46 can be slightly offset to apply force to the maintenance part 4512 to drive the dismounting shaft 451 to rotate.

[0214] Further, the first bottom shell 41 is provided with a protrusion 415 abutting against the LED lamp plate 42 on one side of the LED lamp plate 42, and the second hole 4302 is arranged on the protrusion 415. By arranging the second hole 4302 on the protrusion 415, the depth of the second hole 4302 can be increased, the maintenance needle 46 is protected, and the maintenance needle 46 is prevented from being broken when force is applied to the maintenance portion 4512.

[0215] The clamping portion of the locking device 45 in the display module 4 is clamped with the clamping portion 16 on the cabinet frame 1, so that the display module 4 is fixed on the cabinet frame 1 and is prevented from being accidentally dropped. The display module 4 can not only be maintained from the back, but also be maintained from the front through the maintenance hole 43, and is suitable for front maintenance of a display module 4 with a small pixel pitch, thereby improving the disassembly and maintenance efficiency of the display module 4.

[0216] Further, as shown in Figures 36-42 , the clamping member 53 in the control box locking device 5 is provided with two clamping members 53, and one clamping member 53 is connected to each side of the driving assembly 52 to drive the two clamping members 53 to move synchronously. By arranging two clamping members 53, the two clamping members 53 are clamped from two sides at different positions of the cabinet frame 1, so that the stability of the connection between the control box body 51 and the cabinet frame 1 is ensured, and a gap between the control box body 51 and the cabinet frame 1 caused by loosening of the clamping portion is avoided.

[0217] Referring to Figure 41 , in the embodiment, the third direction is the thickness direction of the control box body 51; the two clamping members 53 extend along the first direction, and the two clamping members 53 are oppositely arranged; the clamping member 53 is in a sheet shape; and the embodiment takes one of the clamping members 53 as an example, and the two clamping members 53 are the same in structure and arrangement.

[0218] Referring to Figures 36-39 , the clamping member 53 is provided with a clamping end 533, the cabinet frame 1 is provided with a clamping portion 17, and the clamping end 533 is clamped with the clamping portion 17. The clamping end 533 moves with the clamping member 53, and when the clamping end 533 moves to the position of the clamping portion 17, the clamping end 533 is clamped with the clamping portion 17, so that the control box body 51 is fixed on the cabinet frame 1. In the embodiment, the two clamping members 53 are each provided with two clamping ends 533, and the cabinet frame 1 is provided with four clamping portions 17. Alternatively, the clamping end 533 and the clamping portion 17 are each provided with a guide inclined surface, so that the clamping end 533 and the clamping portion 17 are smoothly matched.

[0219] Referring to Figure 43 and Figure 44Further, the driving assembly 52 comprises a main body 521 and a locking piece 522. The main body 521 is rotationally connected to the control box body 51 and connected with the clamping piece 53. The locking piece 522 is rotationally arranged in the main body 521. The first end of the locking piece 522 is connected with the main body 521 through a second elastic piece 524. The second end of the locking piece 522 is clamped with the control box body 51. The second elastic piece 524 can be a spring. By arranging the main body 521 and the locking piece 522 in the main body 521, the first end of the locking piece 522 presses the second elastic piece 524 and the second end of the locking piece 522 is lifted to be separated from the control box body 51 when the locking piece 522 is rotated, so that the driving assembly 52 is in an unlocked state. When the external force is lost, the locking piece 522 can be reset under the action of the second elastic piece 524. In the embodiment, the main body 521 is a handle. The two ends of the handle are respectively connected with one clamping piece 53. The locking piece 522 is in a sheet shape. The second elastic piece 524 is a spring (the specifications of the spring can be: wire diameter 0.8 mm, outer diameter 6 mm, length 12 mm).

[0220] In the embodiment, the control box body 51 is provided with a clamping hook 511. When the second end of the locking piece 522 is clamped with the clamping hook 511, the driving assembly 52 is in a locked state. The control box locking device 5 further comprises a third connecting piece 56. The main body 521 is rotationally arranged on the control box body 51 through the third connecting piece 56. The third connecting piece 56 can be an M5×25 flat head cross screw. The control box locking device 5 further comprises a rotational connecting piece 526. The locking piece 522 is rotationally arranged on the control box body 51 through the rotational connecting piece 526. The rotational connecting piece 526 can be an M4×12 cross screw.

[0221] In order to enable the main body 521 to drive the clamping piece 53 to slide in the control box body 51 when the main body 521 rotates, the control box locking device 5 further comprises a first connecting piece 54. The clamping piece 53 is provided with a guide hole 531. One end of the first connecting piece 54 is rotationally connected to the main body 521. The other end of the first connecting piece 54 is slidingly arranged in the guide hole 531. The main body 521 can drive the first connecting piece 54 to slide in the guide hole 531 when the main body 521 rotates. By arranging the guide hole 531 and the first connecting piece 54, the first connecting piece 54 slides in the guide hole 531 when the main body 521 rotates.

[0222] In the embodiment, the third direction is the length direction of the guide hole 531. The first connecting piece 54 is slidingly arranged in the guide hole 531. The first connecting piece 54 is an M4×10 male-female screw.

[0223] Optionally, the control box locking device 5 further comprises a glass screw 57, the glass screw 57 is arranged in the main body 521, and the main body 521 is rotatable to drive the end of the glass screw 57 to abut against the control box body 51. By arranging the glass screw 57, when the main body 521 is rotated to a certain extent, the rotation of the main body 521 is limited by the glass screw 57. In this embodiment, the nominal diameter of the glass screw 57 is 4 mm, and the length is 10 mm. The structure, arrangement mode and principle of the glass screw 57 can refer to the prior art, and will not be described here.

[0224] In order to limit the sliding direction of the clamping piece 53 in the control box body 51, the control box locking device 5 further comprises a second connecting piece 55, the second connecting piece 55 is connected to the control box body 51, the clamping piece 53 is provided with a waist-shaped hole 532, and the second connecting piece 55 is slidingly arranged in the waist-shaped hole 532. By arranging the second connecting piece 55 and the waist-shaped hole 532, when the clamping piece 53 slides, the second connecting piece 55 slides along the inner hole wall of the waist-shaped hole 532, thereby limiting the sliding direction of the clamping piece 53.

[0225] Optionally, the waist-shaped hole 532 is arranged at least in two intervals, and the second connecting piece 55 is arranged one by one corresponding to the waist-shaped hole 532. In this embodiment, the first direction is the length direction of the waist-shaped hole 532, and the second connecting piece 55 is arranged in the waist-shaped hole 532; the second connecting piece 55 is arranged in parallel and interval in the first direction; the second connecting piece 55 is an M4*14 flat head cross screw.

[0226] In order to limit the relative position of the control box body 51 and the cabinet frame 1, the control box locking device 5 further comprises a positioning piece 512, both ends of the positioning piece 512 are respectively inserted into the control box body 51 and the cabinet frame 1. By arranging the positioning piece 512, the relative position of the control box body 51 and the cabinet frame 1 can be limited, and the installation position of the control box body 51 is ensured to be accurate. In this embodiment, the positioning piece 512 is a positioning pin; the positioning piece 512 is arranged at least in two intervals.

[0227] Optionally, the driving assembly 52 further comprises a button 523, the button 523 is arranged outside the main body 521, the button 523 is connected to the locking piece 522, and is used for pressing to drive the locking piece 522 to abut against the second elastic piece 524. By arranging the button 523, when holding the handle with one hand, the finger can control the locking piece 522 to rotate by pressing the button 523, so that the driving assembly 52 reaches the unlocking state, and the finger releases the button 523, and the locking piece 522 is automatically reset.

[0228] In the embodiment, the locking members 522 are provided in two, and the buttons 523 are also provided in two, each of the buttons 523 corresponding to one of the locking members 522, thereby driving one of the clamping members 53; the control box locking device 5 further comprises fasteners 525, the buttons 523 being fixed to the locking members 522 through the fasteners 525; the fasteners 525 are provided in two; the fasteners 525 can be PM2.5 round head screws.

[0229] Optionally, the first end of the locking member 522 is provided with a cylindrical protrusion 5221, and the second elastic member 524 is at least partially sleeved on the cylindrical protrusion 5221. By providing the cylindrical protrusion 5221, the second elastic member 524 and the locking member 522 are facilitated to be installed, and the end of the second elastic member 524 can be abutted against the locking member 522. In the embodiment, the second elastic member 524 is partially sleeved on the cylindrical protrusion 5221, and the two ends of the second elastic member 524 are respectively abutted against the main body 521 and the locking member 522.

[0230] If the initial state of the control box locking device 5 is taken as Figure 43 and Figure 44 , at this time, the locking member 522 is clamped with the clamping hook 511 (the driving assembly 52 is in the locked state), and the clamping end 533 of the clamping member 53 is clamped with the clamping portion 17 of the box frame 1; when the button 523 is pressed, referring to Figure 45 and Figure 46 , the locking member 522 rotates by a certain angle along the X1 direction with the rotating connecting member 526 as the center, the first end of the locking member 522 abuts the second elastic member 524 against the main body 521, the second elastic member 524 is compressed, the second end of the locking member 522 is disengaged from the clamping hook 511 (the driving assembly 52 reaches the unlocked state), and at this time, the first connecting member 54 is located at the top end of the guide hole 531; then the main body 521 is rotated along the Y1 direction, referring to Figures 47-49 , with the main body 521 rotating along the Y1 direction, the first connecting member 54 slides to the bottom end of the guide hole 531, and at the same time, the clamping member 53 slides in the control box body 51, the clamping member 53 moves along the first direction to the direction close to the clamping hook 511, so that the clamping end 533 of the clamping member 53 is disengaged from the clamping portion 17 of the box frame 1.

[0231] The following is the specific installation and use process of the control box locking device 5:

[0232] First, the tail end of the main body 521 is inserted through the control box body 51, the main body 521 and the clamping member 53 are fixed by the first connecting member 54, the main body 521 is rotatably fixed to the control box body 51 by the third connecting member 56, and the clamping member 53 is fixed to the control box body 51 by the second connecting member 55, thereby realizing that the main body 521 drives the clamping member 53 to slide in the control box body 51 along the first direction when the main body 521 rotates.

[0233] Subsequently, the locking member 522 and the second elastic member 524 are installed in the main body 521 by using the rotating connecting member 526, and the button 523 is fixed on the locking member 522 by using the fastener 525, so that the rotation locking can be realized by pressing the button 523 to drive the locking member 522 to rotate; and the glass bead screw 57 is fixed on the main body 521 to realize the rotation limiting.

[0234] Referring to Figure 49 In use, it is determined that the locking member 522 is disengaged from the hook 511, so as to ensure that the driving assembly 52 can rotate relative to the control box body 51 (i.e., the driving assembly 52 is in an unlocked state), one hand holds the main body 521, and the control box body 51 with the locking structure is placed on the cabinet frame 1, so that the two ends of the positioning member 512 are respectively inserted into the control box body 51 and the cabinet frame 1, and the relative positions of the control box body 51 and the cabinet frame 1 are determined, so as to ensure the installation accuracy.

[0235] After the control box body 51 is placed in position, the main body 521 is rotated along the Y2 direction, in the rotating process, the clamping member 53 is driven to slide in the control box body 51, the clamping member 53 moves along the first direction to the direction away from the hook 511, the clamping end 533 of the clamping member 53 is clamped and matched with the clamping part 17 of the cabinet frame 1, so as to install the control box body 51 on the cabinet frame 1.

[0236] Referring to Figure 46 The main body 521 is rotated along the Y2 direction, so that the second end of the locking member 522 is close to the hook 511, the hook 511 plays a role of lifting the locking member 522, the locking member 522 rotates a certain angle along the X1 direction with the rotating connecting member 526 as the center, the first end of the locking member 522 presses the second elastic member 524 on the main body 521, the second elastic member 524 is compressed, and the second end of the locking member 522 is lifted. Referring to Figure 44 After the second end of the locking member 522 is lifted under the action of the second elastic member 524, the second end can be clamped with the hook 511 and automatically reset, at this time, the main body 521 cannot continue to rotate (the driving assembly 52 reaches the locking state). It can be understood that the locking member 522 can be lifted by the hook 511 during installation, so it is not necessary to press the button 523; when the control box body 51 is disassembled, the button 523 can be pressed to control the locking member 522 to rotate, so that the locking member 522 is disengaged from the hook 511.

[0237] The main body 521 is locked by the locking member 522, which is used as a safety device to prevent misoperation unlocking, the whole operation process is completed on the driving assembly 52, which is suitable for single-handed operation of the button 523, so as to realize single-handed quick operation of one person.

[0238] It should be noted that the above only the preferred embodiments of the present application and the use of technical principles. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, those skilled in the art can make various obvious changes, re-adjustment and replacement without departing from the scope of the present application. Therefore, although the above embodiments of the present application has been described in more detail, but the present application is not limited to the above examples, without departing from the concept of the present application, but also can include more other equivalent embodiments, and the scope of the present application is determined by the appended claims.

Claims

1. A display screen, characterized by The utility model relates to a box frame (1);Quick lock device (2), the first lock body (21) and second lock body (22) are included, the first lock body (21) is provided with along the one end of first direction the box frame (1), the second lock body (22) is provided with along the other end of first direction, the first lock body (21) of one of the box frame (1) in adjacent two along the first direction and the second lock rod assembly (39) of the second lock body (22) of another connection; Arc lock device (3), including arc lock mechanism and second lock rod assembly (39), the box frame (1) is provided with along the one side of second direction the arc lock mechanism, the other side is provided with the second lock rod assembly (39), one of the box frame (1) in adjacent two along the second direction and the second lock rod assembly (39) of another connection of the arc lock mechanism, the arc lock device (3) is used for adjusting the joint angle of adjacent two box frame (1) along the second direction; Control box locking device (5), the control box locking device (5) includes control box body (51) and locking structure, the control box body (51) is connected with the box frame (1) through the locking structure, and the locking structure includes: Driving assembly (52), rotationally connected to the control box body (51), the driving assembly (52) has the locking state of being clamped with the control box body (51) and the unlocking state of being relatively rotated with the control box body (51); Clamping part (53), connected to the driving assembly (52) and at least partially slidingly arranged in the control box body (51), the driving assembly (52) rotation can drive the clamping part (53) to slide in the control box body (51), so that the clamping part (53) is clamped with the box frame (1). The first lock body (21) includes a locking seat (211) and a first lock rod assembly (212), and the first lock rod assembly (212) is used for locking the locking seat (211) with the second lock body (22); The locking seat (211) includes a first seat body (2111) and a first connecting column (2112), the first seat body (2111) is arranged at one end of the first connecting column (2112), and a first connecting hole (2113) is arranged at the center of the first seat body (2111) and penetrates the first connecting column (2112); 2. The display screen of claim 1, wherein, The first lock rod assembly (212) includes a first lock rod (2121), the first lock rod (2121) is connected with the second lock body (22) after penetrating the first connecting hole (2113) and extending out of the first seat body (2111);The outer periphery of the first lock rod (2121) is provided with an extension limiting groove (21211). ​ ​ The first seat body (2111) is provided with a first limiting assembly (213) on one side close to the first connecting column (2112), and the first limiting assembly (213) is arranged in the circumferential direction of the first connecting column (2112); the first limiting assembly (213) comprises a first limiting column (2131), which is arranged in an extendable manner, and the first limiting column (2131) penetrates the first connecting column (2112) and extends into the first connecting hole (2113); the first limiting column (2131) is in lengthened cooperation with the protruding limiting groove (21211), so that the first lock rod (2121) is kept in a protruding state.

3. The display screen of claim 2, wherein, The first lock body (21) further comprises a locking sleeve (214), one end of the locking sleeve (214) is rotationally connected with the first connecting column (2112), the first lock rod (2121) penetrates the locking sleeve (214) and the first connecting hole (2113) in sequence, and the outer periphery of the locking sleeve (214) is in cooperation with the first limiting assembly (213); rotation of the locking sleeve (214) can make the first limiting column (2131) extend or retract, so as to drive the first lock rod (2121) to move; The first seat body (2111) is provided with a first limiting hole (21111) on one side close to the first connecting column (2112), and the first limiting hole (21111) is located in the circumferential direction of the first connecting column (2112); The first limiting assembly (213) further comprises a first limiting spring (2132) and a pressing piece (2133); a gap is left between the first limiting hole (21111) and the first connecting column (2112), and the gap is located at an end away from the first seat body (2111); the first limiting spring (2132) is arranged at an end of the first limiting column (2131) away from the first connecting column (2112); the pressing piece (2133) is arranged at an end of the first limiting column (2131) close to the first connecting column (2112); the locking sleeve (214) extends into the gap and cooperates with the pressing piece (2133); rotation of the locking sleeve (214) can make the first limiting column (2131) extend or retract.

4. The display screen of claim 3, wherein, The outer periphery of the locking sleeve (214) is provided with a vertical section (2141); when the first limiting column (2131) is in cooperation with the protruding limiting groove (21211) in lengthened state, the pressing piece (2133) abuts against the vertical section (2141); rotation of the locking sleeve (214) can make the pressing piece (2133) abut against the outer periphery of the locking sleeve (214), so that the first limiting column (2131) is retracted and is out of cooperation with the protruding limiting groove (21211).

5. The display screen of claim 2, wherein, The outer periphery of the first lock rod (2121) is further provided with a locking limiting groove (21213), the depth of the locking limiting groove (21213) is smaller than the depth of the extension limiting groove (21211), the locking limiting groove (21213) extends along the length direction of the first lock rod (2121), and the extension limiting groove (21211) is arranged at the end of the locking limiting groove (21213) away from the connection end of the first lock rod (2121) and the second lock body (22).

6. The display screen of claim 1, wherein, The arc lock mechanism comprises an arc lock seat (31) and a latch lock assembly (32), the latch lock assembly (32) is arranged on one side of the arc lock seat (31), and the second lock rod assembly (39) is matched and locked with the latch lock assembly (32); the arc lock mechanism further comprises: An arc lock slider (33) is arranged in the arc lock seat (31) and extends along the circumference, the arc lock slider (33) is slidably arranged in the first sliding groove (3111), both ends of the first sliding groove (3111) are arranged through the two side walls of the arc lock seat (31), and one side of the arc lock slider (33) is provided with the latch lock assembly (32); A fixed pressing block (36) is arranged on the arc lock slider (33) and extends along the radial direction of the center line, and the fixed pressing block (36) is telescopically arranged in the first mounting hole (331); An angle adjusting assembly comprises an angle adjusting knob (34) and a connecting rod (35), one end of the connecting rod (35) is arranged on the angle adjusting knob (34), the connecting rod (35) is rotatably connected with the arc lock slider (33) through the fixed pressing block (36), and the cooperation end surface of the fixed pressing block (36) and the angle adjusting knob (34) is provided with an angle locking position and an angle unlocking position; rotating the angle adjusting knob (34) can selectively cooperate the angle adjusting knob (34) with the angle locking position or the angle unlocking position, and the fixed pressing block (36) can be fixed or unfixed with the arc lock seat (31).

7. The display screen of claim 6, wherein, The angle locking position comprises a first locking plane (3612), the angle unlocking position comprises a first unlocking plane (3613), the height of the first unlocking plane (3613) is lower than that of the first locking plane (3612), and the first locking plane (3612) is provided with two, and the first unlocking plane (3613) is located between the two first locking planes (3612).

8. The display screen of claim 6, wherein, The fixed pressing block (36) comprises a pressing head (361) and a first sleeve (362), the first sleeve (362) is arranged at one end of the pressing head (361), and the outer diameter of the first sleeve (362) is smaller than the outer diameter of the pressing head (361), a through hole (3621) penetrating the pressing head (361) is arranged on the first sleeve (362), the top of the arc lock seat (31) is provided with a first avoiding slot (3121) extending along the extension direction of the first sliding groove (3111), the pressing head (361) is arranged between the angle adjusting knob (34) and the arc lock seat (31), the first sleeve (362) enters the first mounting hole (331) through the first avoiding slot (3121), and the connecting rod (35) penetrates through the through hole (3621) and is rotationally connected with the arc lock sliding block (33) in the first mounting hole (331). The first sleeve (362) is telescopically arranged in the first mounting hole (331) through a first spring (37); the first mounting hole (331) is arranged as a stepped hole, the first spring (37) is sleeved on the outer periphery of the connecting rod (35), one end of the first spring (37) is in abutment with one end of the first sleeve (362) away from the pressing head (361), and the other end is in abutment with the stepped surface of the stepped hole.

9. The display screen of claim 1, wherein, The box frame (1) comprises a frame body (13) and a protection mechanism (14), the protection mechanism (14) is arranged at both ends of the frame body (13) in a first direction, the protection mechanism (14) comprises a protection plate (141), a connecting frame (142) and a first elastic member (143), the protection plate (141) extends along the length direction of the end of the frame body (13); the connecting frame (142) is arranged on one side of the protection plate (141), the frame body (13) is provided with an accommodating cavity (131), the first elastic member (143) is arranged in the accommodating cavity (131) and connected with the connecting frame (142), the extension direction of the first elastic member (143) is arranged at a preset included angle with the protection plate (141), the connecting frame (142) can be retracted into the accommodating cavity (131) and compress the first elastic member (143) under stress; the first elastic member (143) can drive the connecting frame (142) to extend out of the accommodating cavity (131), so that the connecting frame (142) drives the protection plate (141) to extend to the front side of the display module (4).

10. The display screen of claim 9, wherein, The bottom surface of the accommodating cavity (131) is an inclined surface (1311), the inclined surface (1311) is at the preset included angle with the protection plate (141), the bottom surface of the connecting frame (142) is parallel to the inclined surface (1311), and the inclined surface (1311) is provided with a first groove (13111), the bottom surface of the first groove (13111) is parallel to the inclined surface (1311), the first elastic piece (143) is arranged in the first groove (13111), and the bottom surface of the connecting frame (142) is provided with a second connecting column (1421) which is inserted into the first elastic piece (143) in a direction perpendicular to the inclined surface (1311).

11. The display screen of claim 10, wherein, A guide groove (1422) parallel to the inclined surface (1311) is arranged on the connecting frame (142), a guide piece is arranged in the accommodating cavity (131), the guide piece is matched with the guide groove (1422), and the movement of the protection plate (141) is guided.

12. The display screen of claim 9, wherein, The protection mechanism (14) further comprises a second limiting assembly (144) which is telescopically arranged on the frame body (13), the protection plate (141) is provided with a second limiting hole (1411), and the second limiting assembly (144) is used for cooperating with the second limiting hole (1411) to fix the protection plate (141) when the protection plate (141) is extended to the front side of the display module (4).

13. The display screen of claim 1, wherein, The display screen further comprises a display module (4), the display module (4) comprises: A first bottom shell (41) and an LED lamp plate (42), the LED lamp plate (42) is arranged on the front side of the first bottom shell (41), and a maintenance hole (43) is arranged through the LED lamp plate (42) and the first bottom shell (41); A rear cover (44) connected to the rear side of the first bottom shell (41); A locking device (45) arranged between the first bottom shell (41) and the rear cover (44), the locking device (45) comprises a dismounting shaft (451), a first locking piece (452) and a second locking piece (453), the dismounting shaft (451) is provided with a transmission part and a maintenance part (4512), the first locking piece (452) and the second locking piece (453) are matched with the transmission part at one end close to each other, the dismounting shaft (451) is rotated, the transmission part drives the first locking piece (452) and the second locking piece (453) to move in the direction close to or away from each other, the first locking piece (452) and the second locking piece (453) are provided with a clamping part (17) at one end away from each other, and the rear cover (44) is provided with a avoiding opening corresponding to the clamping part (17); The maintenance hole (43) is provided corresponding to the maintenance part (4512), a maintenance thimble (46) passes through the maintenance hole (43) to apply force to the maintenance part (4512), so that the dismounting shaft (451) can be rotated; The box frame (1) is provided with a clamping position (16) for clamping with the clamping part (17).

14. The display screen of claim 13, wherein, The maintenance hole (43) comprises an unlocking hole (431) and a locking hole (432), the unlocking hole (431) and the locking hole (432) are arranged at intervals, the maintenance part (4512) comprises a second unlocking plane (45121) and a second locking plane (45122), the second unlocking plane (45121) and the second locking plane (45122) are arranged at intervals along the circumferential direction of the dismounting shaft (451) by a preset angle; the unlocking hole (431) can correspond to the second unlocking plane (45121); the locking hole (432) can correspond to the second locking plane (45122).

15. The display screen of claim 14, wherein, The maintenance part (4512) further comprises a connecting camber surface (45123) for connecting the second unlocking plane (45121) and the second locking plane (45122), one end of the connecting camber surface (45123) close to the second unlocking plane (45121) is provided with a first limiting groove (45124), and the other end of the connecting camber surface (45123) close to the second locking plane (45122) is provided with a second limiting groove (45125). The first bottom shell (41) is provided with a limiting protrusion (412) on one side close to the dismounting shaft (451), the limiting protrusion (412) is located between the unlocking hole (431) and the locking hole (432), when the limiting protrusion (412) slides into the first limiting groove (45124), the unlocking hole (431) corresponds to the second unlocking plane (45121); when the limiting protrusion (412) slides into the second limiting groove (45125), the locking hole (432) corresponds to the second locking plane (45122).

16. The display screen of claim 13, wherein, The transmission part comprises a gear structure (4511) arranged on the outer periphery of the dismounting shaft (451), one end of the first locking piece (452) close to the second locking piece (453) is provided with a first rack structure (4522), one end of the second locking piece (453) close to the first locking piece (452) is provided with a second rack structure (4532), the first rack structure (4522) is located on one side of the gear structure (4511) close to the rear cover (44) and is engaged with the gear structure (4511); the second rack structure (4532) is located on one side of the gear structure (4511) close to the first bottom shell (41) and is engaged with the gear structure (4511).

17. The display screen of claim 1, wherein, The drive assembly (52) comprises: a main body (521) rotationally connected to the control box body (51) and connected with the clamping piece (53); a locking piece (522) rotationally arranged in the main body (521), a first end of the locking piece (522) is connected with the main body (521) through a second elastic piece (524), and a second end of the locking piece (522) is clamped with the control box body (51); The main body (521) is externally provided with a button (523), the button (523) is connected to the locking member (522), and the button (523) is used for pressing and driving the locking member (522) to press the second elastic member (524).

18. The display screen of claim 17, wherein, The control box locking device (5) further comprises a first connecting member (54), the clamping member (53) is provided with a guide hole (531), one end of the first connecting member (54) is rotationally connected to the main body (521), and the other end of the first connecting member (54) is slidably arranged in the guide hole (531), and the main body (521) can drive the first connecting member (54) to slide in the guide hole (531) through rotation.

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