CN219164857U - Box body assembly of LED display device and LED display device - Google Patents

Abstract

The utility model provides a box assembly of an LED display device and the LED display device, wherein the box assembly of the LED display device comprises: the box body comprises a rear plate and a frame which is arranged at the edge of the rear plate in a surrounding manner; the control assembly is arranged on the rear plate and comprises a plug-in component penetrating through the frame; the shielding cover is arranged on the rear side of the frame in a turnover manner through the pivot structure and is provided with an avoidance position for avoiding the plug-in piece and a shielding position for shielding the plug-in piece. The technical scheme of the application effectively solves the problem of electric shock risk caused by mistaken contact of the plug-in component by operators in the related technology.

Description

Box body assembly of LED display device and LED display device

Technical Field

The utility model relates to the technical field of LED display, in particular to a box assembly of an LED display device and the LED display device.

Background

An LED display device is a flat panel display device for displaying various information such as text, images, video, and video signals.

The box assembly of the LED display device comprises a box and a control assembly. The box body comprises a back plate and a frame enclosed at the edge of the back plate. The control assembly is arranged on the rear plate and comprises a plug-in component penetrating through the frame. When the control assembly of the box assembly of the LED display device is electrified for testing, the plug-in component of the control assembly is electrified, the plug-in component is exposed out of the box assembly of the LED display device, and the risk of electric shock caused by the fact that an operator touches the plug-in component by mistake exists.

Disclosure of Invention

The utility model mainly aims to provide a box assembly of an LED display device and the LED display device, so as to solve the problem of electric shock risk caused by mistaken contact of an operator with a plug-in component in the related art.

In order to achieve the above object, according to one aspect of the present utility model, there is provided a case assembly of an LED display device, comprising: the box body comprises a rear plate and a frame which is arranged at the edge of the rear plate in a surrounding manner; the control assembly is arranged on the rear plate and comprises a plug-in component penetrating through the frame; the shielding cover is arranged on the rear side of the frame in a turnover manner through the pivot structure and is provided with an avoidance position for avoiding the plug-in piece and a shielding position for shielding the plug-in piece.

Further, shelter from the lid and include apron and the locking piece of movably setting on the apron, the one end of apron sets up in the rear side of frame through pivot structure can overturn, is provided with on the frame with locking piece locking complex locking part, when the locking piece is in the unblock position of separating with locking part, the apron can dodge the position and shelter from the position and overturn the switching, when the locking piece is in with locking part locking complex locking position, the apron keeps in the shelter from the position.

Further, the locking piece comprises a driving part and a locking hook, wherein the driving part is movably arranged on the cover plate along the direction parallel to the pivoting shaft of the pivoting structure, the locking hook is connected to the driving part, and the locking part is a locking groove arranged in the frame.

Further, be provided with on the frame with the locked groove intercommunication and be used for dodging the back-off groove of latch hook, the locked groove extends along the direction of movement of locking piece with the back-off groove and sets up, the latch hook includes the arm body and connects the gib head at the free end of arm body, the locked groove is including dodging the arm body and the dodging the slot section of gib head and with dodging the locking slot section of slot section intercommunication, the locking slot section extends along the direction of movement of locking piece, under the circumstances that shelter from the lid in shelter from the position, the latch hook is in the unblock position when the latch hook is located the back-off groove, when the gib head of latch hook moves to the locking slot section by the back-off groove, the latch hook is in the locking position.

Further, the case assembly of the LED display device further includes an elastic member disposed in the shielding cover, the elastic member being disposed between the cover plate and the driving part, the elastic member applying an elastic force to the cover plate in a direction pointing to the locking position along an unlocking position of the locking member, so that the latch hook is maintained at the locking position.

Further, the driving part comprises a driving rod penetrating through the cover plate and an operating part arranged on the outer side wall of the driving rod, at least part of the operating part is exposed out of the cover plate, the axis of the driving rod is parallel to the axis of the pivot shaft of the pivot structure, and the latch hook is arranged on one side of the driving rod, which is away from the operating part.

Further, the cover plate is provided with a mounting concave cavity for mounting the driving rod and a limiting through groove communicated with the mounting concave cavity, the limiting through groove penetrates through the outer surface of the cover plate, and the operating part is positioned in the limiting through groove to limit the moving range of the locking piece.

Further, the cover plate comprises a cover plate body and a baffle plate arranged on one side of the cover plate body, the installation concave cavity is formed in the surface of the cover plate body, which is opposite to the baffle plate, the limiting through groove is formed in the cover plate body, the baffle plate is provided with an avoidance long hole for the lock hook to pass through, and the long shaft of the avoidance long hole extends along the direction parallel to the pivot shaft of the pivot structure.

Further, the pivoting structure comprises a first pivoting sleeve, a second pivoting sleeve and a pivoting shaft penetrating through the first pivoting sleeve and the second pivoting sleeve, the first pivoting sleeve is arranged at the rear side of the frame, and the second pivoting sleeve is arranged at one side of the shielding cover, which turns around the rear side of the frame; and/or the shielding cover is kept at the avoiding position when the shielding cover is turned to the inside of the box body.

According to another aspect of the utility model, there is provided an LED display device, including a plurality of box assemblies that are spliced together, where the box assemblies are the box assemblies of the LED display device, and when two adjacent box assemblies are spliced together, a shielding cover of each box assembly is located at an avoiding position, and a plug of a plug member of one box assembly of the two adjacent box assemblies is in plug-in fit with a socket of a plug member of the other box assembly.

By applying the technical scheme of the utility model, the box body component of the LED display device comprises: the box, control assembly and shelter from the lid. The box body comprises a back plate and a frame enclosed at the edge of the back plate. The control assembly is arranged on the rear plate and comprises a plug-in component penetrating through the frame. The shielding cover is arranged on the rear side of the frame in a turnover manner through the pivot structure and is provided with an avoidance position for avoiding the plug-in piece and a shielding position for shielding the plug-in piece. The shielding cover can be arranged in a turnover mode through the pivot structure so as to be positioned at an avoiding position of avoiding the plug-in component, and the plug-in component can be subjected to plug-in operation. Before the control assembly of the box body assembly of the LED display device is electrified and tested, the shielding cover is positioned at the shielding position of the shielding plug-in piece. Therefore, when the control assembly of the box assembly of the LED display device is electrified and tested, the plug-in piece is shielded by the shielding cover and cannot be exposed outside the box assembly of the LED display device, so that misoperation of an operator is avoided. Therefore, the technical scheme of the application effectively solves the problem that the plug-in component in the related technology is exposed outside the box body component of the LED display device, and an operator touches the plug-in component by mistake to cause electric shock.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

FIG. 1 shows a schematic front view of an embodiment of a housing assembly of an LED display device according to the present utility model;

FIG. 2 shows a partial schematic top view of a housing assembly of the LED display device of FIG. 1;

FIG. 3 shows a schematic top view of a cover and pivot structure of a housing assembly of the LED display device of FIG. 1;

FIG. 4 shows a schematic front view of the cover and pivot structure of FIG. 3;

FIG. 5 shows a schematic side view of the shield cover and pivot structure of FIG. 3;

FIG. 6 shows a schematic cross-sectional view of the shield cover and pivot structure of FIG. 3;

FIG. 7 shows a schematic cross-sectional view of the pivot structure of FIG. 4;

FIG. 8 illustrates a partial perspective view of the cover of the housing assembly of the LED display device of FIG. 1 in a blocking position;

FIG. 9 is a schematic perspective view of a cover of the housing assembly of the LED display device of FIG. 1 in a retracted position;

FIG. 10 shows a schematic partial cross-sectional view of the latch hook of the housing assembly of the LED display device of FIG. 1 in a latched position;

FIG. 11 illustrates a partial cross-sectional view of the latch hook of the housing assembly of the LED display device of FIG. 1 in an unlatched position;

FIG. 12 is a schematic view showing an exploded structure of a shielding cover and an elastic member of a case assembly of the LED display device of FIG. 1;

fig. 13 is an exploded view showing another view of the shielding cover and the elastic member of the case assembly of the LED display device of fig. 1.

Wherein the above figures include the following reference numerals:

10. a case; 11. a rear plate; 12. a frame; 13. a locking groove; 131. avoiding the groove section; 132. a locking groove section; 14. a relief groove;

20. a control assembly; 21. a plug-in component;

30. a shielding cover; 31. a cover plate; 311. a cover plate body; 312. a baffle; 313. avoiding the long hole; 32. a locking member; 321. a driving section; 3211. a driving rod; 3212. an operation unit; 322. a latch hook; 3221. an arm body; 3222. a hook head; 323. installing a concave cavity; 324. limiting through grooves;

40. a pivoting structure; 41. a first pivot sleeve; 42. a second pivot sleeve; 43. a pivot shaft;

50. an elastic member;

60. and a box assembly.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be made by one of ordinary skill in the art without inventive effort, are intended to be within the scope of the present utility model, based on the embodiments herein.

As shown in fig. 1 to 11, the case assembly of the LED display device of the present embodiment includes: the device comprises a box body 10, a control assembly 20 and a shielding cover 30. The case 10 includes a rear plate 11 and a frame 12 surrounding the edge of the rear plate 11. The control assembly 20 is arranged on the rear plate 11, and the control assembly 20 comprises a plug-in piece 21 penetrating through the frame 12. The shielding cover 30 is disposed on the rear side of the frame 12 in a reversible manner by a pivot structure 40, and has a position for avoiding the plug 21 and a shielding position for shielding the plug 21.

By applying the technical scheme of the embodiment, the box assembly of the LED display device comprises: the device comprises a box body 10, a control assembly 20 and a shielding cover 30. The shielding cover 30 is disposed on the rear side of the frame 12 in a reversible manner by a pivot structure 40, and has a position for avoiding the plug 21 and a shielding position for shielding the plug 21. The shielding cover 30 is arranged in a reversible manner through the pivot structure 40 so as to be in an avoiding position for avoiding the plug-in member 21, and the plug-in member 21 can be subjected to plug-in operation. Before the control assembly 20 of the housing assembly of the LED display device is powered on for testing, the shielding cover 30 is in a shielding position shielding the plug-in 21. Thus, when the control assembly 20 of the box assembly of the LED display device is electrified and tested, the plug-in piece 21 is shielded by the shielding cover 30 and cannot be exposed outside the box assembly of the LED display device, so that the misoperation of an operator is avoided. Therefore, the technical solution of the present embodiment effectively solves the problem that the plug-in unit 21 in the related art is exposed outside the box assembly of the LED display device, and an operator touches the plug-in unit 21 by mistake, resulting in electric shock.

In this embodiment, the control assembly 20 further includes a control board and a power board connected to the control board, and the power board is connected to the plug-in unit 21. The plug 21 includes a plug including an insulator and a copper pin penetrating through the insulator, and a part of the copper pin penetrates through the insulator. The copper needle of the plug can be shielded when the shielding cover 30 is positioned at the shielding position, and the copper needle of the plug can be shielded when the shielding cover 30 is positioned at the avoiding position.

As shown in fig. 1 to 11, the shielding cover 30 includes a cover plate 31 and a locking member 32 movably provided on the cover plate 31. In this way, the locking member 32 can be moved over the cover plate 31 to facilitate adjustment of the position on the cover plate 31. One end of the cover plate 31 is rotatably disposed at the rear side of the frame 12 through a pivot structure 40, and a locking portion in locking engagement with the locking member 32 is disposed on the frame 12. In order to avoid the locking member 32 interfering with the cover plate 31 and capable of being turned between the avoidance position and the shielding position, the cover plate 31 is capable of being turned between the avoidance position and the shielding position when the locking member 32 is in the unlocking position separated from the locking portion. The cover plate 31 is held in the shielding position with the locking piece 32 in the locking position in locking engagement with the locking portion. In this way, the cover 30 can be secured to the bezel 12 to provide a mechanical lock.

As shown in fig. 1 to 11, the locking member 32 includes a driving portion 321 movably disposed on the cover plate 31 in a direction parallel to the pivot axis 43 of the pivot structure 40, and a locking hook 322 connected to the driving portion 321, the locking portion being a locking groove 13 disposed in the frame 12. The driving part 321 can drive the latch hook 322 to move along the axis parallel to the pivot shaft 43 of the pivot structure 40, so that the operation is convenient. And the matching structure of the latch hook 322 and the latch groove 13 is simple, and the reliability of fixing the shielding cover 30 on the frame 12 can be ensured.

As shown in fig. 1 to 11, in order to increase the moving space of the latch hook 322, a relief groove 14 communicating with the latch groove 13 and for avoiding the latch hook 322 is provided on the frame 12. The lock groove 13 and the evacuation groove 14 are both arranged along the moving direction of the locking piece 32, the lock hook 322 comprises an arm 3221 and a hook head 3222 connected to the free end of the arm 3221, the lock groove 13 comprises an evacuation groove section 131 for evacuating the arm 3221 and the hook head 3222 and a locking groove section 132 communicated with the evacuation groove section 131, and the locking groove section 132 extends along the moving direction of the locking piece 32. With the blanking cover 30 in the blanking position, the lock hook 322 is in the unlocked position when the lock hook 322 is positioned within the relief slot 14, and the lock hook 322 is in the locked position when the hook head 3222 of the lock hook 322 is moved from within the relief slot 14 into the locking slot segment 132. The escape groove 14 and the escape groove segment 131 can escape the lock hook 322, so that the lock hook 322 can move in the frame 12, and meanwhile, the hook head 3222 of the lock hook 322 can hook the locking groove segment 132 in the frame 12, so that the cover plate 31 can be reliably kept in the shielding position.

As shown in fig. 1 to 13, the case assembly of the LED display device further includes an elastic member 50 disposed in the shielding cover 30. The elastic member 50 is located between the cover plate 31 and the driving part 321, and the elastic member 50 applies an elastic force to the cover plate 31 in a direction pointing to the locking position along the unlocking position of the locking member 32, so that the locking hook 322 is maintained at the locking position. Thus, the lock hook 322 cannot be retracted into the retraction slot 14, and the reliability of the lock hook 322 maintained in the locked position is ensured. The elastic member 50 is preferably a return spring.

As shown in fig. 1 to 13, the driving portion 321 includes a driving rod 3211 penetrating the cover plate 31 and an operating portion 3212 provided on an outer side wall of the driving rod 3211. At least part of the operation portion 3212 is exposed out of the cover plate 31, and the operation portion 3212 is arranged to facilitate movement of the driving portion 321, thereby improving convenience of operation. The axis of the driving rod 3211 is parallel to the axis of the pivot shaft 43 of the pivot structure 40, and the latch hook 322 is disposed at a side of the driving rod 3211 facing away from the operation portion 3212. Thus, when one end of the cover plate 31 turns around the rear side of the frame 12 through the pivot structure 40, the cover plate 31 can drive the driving rod 3211 and the latch hook 322 to turn together, and when the cover plate 31 turns from the shielding position to the avoiding position, the latch hook 322 can be positioned at the avoiding position.

In this embodiment, the operation portion 3212 is provided with anti-slip teeth. Thus, the operator applies a pushing force to the anti-slip teeth, and pushes the driving portion 321 to drive the driving rod 3211 to move in the cover 31.

In this embodiment, the return spring is in a certain compression state in a normal state, so that a certain force is ensured to compress the driving portion 321, and the driving portion 321 drives the latch hook 322 to be kept at a locking position in locking fit with the latch slot 13. In this way, by pushing the driving portion 321 to compress the return spring and simultaneously positioning the driving lever 3211, the driving portion 321 can be moved in a constant trajectory.

As shown in fig. 8 to 13, the cover plate 31 is provided with a mounting recess 323 for mounting the driving rod 3211 and a limiting through groove 324 communicated with the mounting recess 323, the limiting through groove 324 penetrates through the outer surface of the cover plate 31, and the operation part 3212 is located in the limiting through groove 324 to limit the movement range of the locking member 32. In this way, the shackle 322 facilitates movement switching between the unlocked and locked positions. Specifically, the driving rod 3211 includes a square rod section and cylindrical rod sections connected to both ends of the square rod section. The mounting cavity 323 comprises a rotation-stopping concave section matched with the square rod section in a rotation-stopping way and an arc-shaped concave section matched with the cylindrical rod section in a guiding way.

As shown in fig. 3 to 13, the cover plate 31 includes a cover plate body 311 and a baffle plate 312 provided on one side of the cover plate body 311, and a mounting recess 323 is provided on the surface of the cover plate body 311 and the baffle plate 312 that are disposed opposite to each other. In this way, the baffle 312 shields the drive rod 3211 located within the mounting pocket 323, preventing the drive rod 3211 from falling out of the mounting pocket 323. The limiting through groove 324 is disposed on the cover body 311. In order to enable the latch hook 322 to pass through the blocking plate 312, the blocking plate 312 is provided with a long escape hole 313 through which the latch hook 322 passes, the long axis of the long escape hole 313 extending in a direction parallel to the pivot axis 43 of the pivot structure 40. In this way, the provision of the escape long hole 313 also prevents interference with the baffle 312 when the latch hook 322 moves in the axial direction parallel to the pivot shaft 43 of the pivot structure 40.

As shown in fig. 3 to 13, the pivot structure 40 includes a first pivot sleeve 41, a second pivot sleeve 42, and a pivot shaft 43 penetrating the first pivot sleeve 41 and the second pivot sleeve 42. The first pivot bushing 41, the second pivot bushing 42, and the pivot shaft 43 cooperate to facilitate rotation of the shield cover 30 about the pivot shaft 43 to flip the shield cover 30 about the rear side of the bezel 12. The first pivot bushing 41 is disposed at the rear side of the frame 12, and the second pivot bushing 42 is disposed at a side of the shielding cover 30 turned around the rear side of the frame 12. The shielding cover 30 is maintained at the avoidance position when the shielding cover 30 is turned inside the case 10. In this way, the shielding cover 30 can be accommodated in the case 10.

Of course, in an embodiment not shown in the drawings, the first pivot bush is provided at the rear side of the frame, and the second pivot bush is provided at a side where the shielding cover is turned around the rear side of the frame. Or the shielding cover is kept at the avoiding position when the shielding cover is turned to the inside of the box body.

In this embodiment, the action process of turning the shielding cover 30 from the shielding position to the avoiding position is as follows: in the state that the normal shielding cover 30 covers the plug connector, the latch hook 322 is kept at the locking position due to a certain compression force of the compression spring. When the upper and lower two boxes 10 are required to be cascaded or the electrified part of the plug connector is leaked, such as a copper needle, the driving part 321 is pushed to compress the reset spring, the driving rod 3211 is guided, the synchronous lock hook 322 is also moved, the lock hook 322 is positioned at the unlocking position and is unlocked with the frame 12, the shielding cover 30 is turned over, the shielding cover 30 is turned to the inside of the box 10, and the cascading of the boxes 10 and the partial leakage of the plug connector of the box 10 can be realized.

In this embodiment, the action process of turning the shielding cover 30 from the avoidance position to the shielding position is as follows: the shielding cover 30 is turned over to a shielding position in the frame 12, and the reset spring automatically resets and pushes the driving part 321, so that the driving part 321 drives the lock hook 322 to move from the unlocking position to the locking position, and the reset spring always applies elastic force to the driving part 321, so that the lock hook 322 is kept at the locking position, the lock hook 322 and the frame 12 are mechanically locked, and the shielding cover 30 covers the plug connector part on the frame 12.

The application also provides an LED display device, the LED display device of this embodiment includes a plurality of box subassemblies 60 that the concatenation set up, and the box subassembly is foretell LED display device's box subassembly, and when two adjacent box subassemblies 60 splice, the shielding lid 30 of every box subassembly 60 is in dodging the position, and the plug of plug 21 of one box subassembly in two adjacent box subassemblies 60 cooperates with the socket plug of plug 21 of another box subassembly.

When the plug-in unit 21 is required to be shielded from power-on, the shielding cover 30 is placed in the shielding position according to the actual situation. When the box components of two adjacent LED display devices need to be spliced, that is, when the up-and-down cascading between the boxes 10 needs to be implemented, the shielding cover 30 is located at the avoiding position.

Because the box body component of the LED display device can solve the problem that the plug-in component in the related art is exposed outside the box body component of the LED display device, an operator touches the plug-in component by mistake to cause electric shock, and the LED display device with the box body component of the LED display device can solve the same technical problem.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. A housing assembly for an LED display device, comprising:

the box body (10) comprises a rear plate (11) and a frame (12) which is arranged at the edge of the rear plate (11) in a surrounding manner;

the control assembly (20) is arranged on the rear plate (11), and the control assembly (20) comprises a plug-in piece (21) penetrating through the frame (12);

the shielding cover (30) is arranged on the rear side of the frame (12) in a turnover manner through a pivot structure (40), and is provided with a avoiding position for avoiding the plug-in piece (21) and a shielding position for shielding the plug-in piece (21).

2. The box assembly of the LED display device according to claim 1, wherein the shielding cover (30) includes a cover plate (31) and a locking member (32) movably disposed on the cover plate (31), one end of the cover plate (31) is disposed on the rear side of the frame (12) in a reversible manner through the pivot structure (40), a locking portion in locking engagement with the locking member (32) is disposed on the frame (12), when the locking member (32) is in an unlocking position separated from the locking portion, the cover plate (31) can be turned and switched between the avoiding position and the shielding position, and when the locking member (32) is in a locking position in locking engagement with the locking portion, the cover plate (31) is kept in the shielding position.

3. The case assembly of the LED display device according to claim 2, wherein the locking member (32) includes a driving portion (321) movably provided on the cover plate (31) in a direction parallel to a pivoting axis (43) of the pivoting structure (40) and a locking hook (322) connected to the driving portion (321), the locking portion being a locking groove (13) provided in the bezel (12).

4. A housing assembly of an LED display device according to claim 3, characterized in that the frame (12) is provided with a relief groove (14) which is communicated with the lock groove (13) and is used for avoiding the lock hook (322), the lock groove (13) and the relief groove (14) are both arranged along the moving direction of the lock (32), the lock hook (322) comprises an arm body (3221) and a hook head (3222) connected to the free end of the arm body (3221), the lock groove (13) comprises a relief groove section (131) which is used for avoiding the arm body (3221) and the hook head (3222) and a lock groove section (132) which is communicated with the relief groove section (131), the lock groove section (132) extends along the moving direction of the lock (32), when the shielding cover (30) is positioned in the position, the lock hook (322) is positioned in the relief groove (14), and when the lock hook (322) is positioned in the shielding position, the lock groove (322) is positioned in the release groove (14), and when the lock hook (322) is positioned in the release groove (14).

5. A housing assembly of an LED display device according to claim 3, further comprising an elastic member (50) provided in the shielding cover (30), the elastic member (50) being located between the cover plate (31) and the driving portion (321), the elastic member (50) applying an elastic force to the driving portion (321) in a direction of the unlocking position of the locking member (32) toward the locking position to hold the lock hook (322) at the locking position.

6. A housing assembly of an LED display device according to claim 3, wherein the driving part (321) comprises a driving rod (3211) penetrating into the cover plate (31) and an operation part (3212) arranged on the outer side wall of the driving rod (3211), at least part of the operation part (3212) is exposed out of the cover plate (31), the axis of the driving rod (3211) is parallel to the axis of the pivot shaft (43) of the pivot structure (40), and the latch hook (322) is arranged on one side of the driving rod (3211) facing away from the operation part (3212).

7. The case assembly of the LED display device according to claim 6, wherein the cover plate (31) is provided with a mounting recess (323) for mounting the driving rod (3211) and a limiting through groove (324) communicating with the mounting recess (323), the limiting through groove (324) penetrates through an outer surface of the cover plate (31), and the operating part (3212) is located in the limiting through groove (324) to limit a moving range of the locking member (32).

8. The case assembly of an LED display device according to claim 7, wherein the cover plate (31) includes a cover plate body (311) and a baffle plate (312) disposed at one side of the cover plate body (311), the mounting recess (323) is disposed on a surface of the cover plate body (311) and the baffle plate (312) disposed opposite to each other, the limit through groove (324) is disposed on the cover plate body (311), an avoidance slot hole (313) through which the latch hook (322) passes is disposed on the baffle plate (312), and a long axis of the avoidance slot hole (313) extends in a direction parallel to a pivot axis (43) of the pivot structure (40).

9. The housing assembly of an LED display device of claim 1,

the pivoting structure (40) comprises a first pivoting sleeve (41), a second pivoting sleeve (42) and a pivoting shaft (43) penetrating through the first pivoting sleeve (41) and the second pivoting sleeve (42), the first pivoting sleeve (41) is arranged at the rear side of the frame (12), and the second pivoting sleeve (42) is arranged at one side of the shielding cover (30) which turns around the rear side of the frame (12);

and/or the shielding cover (30) is kept at the avoiding position when the shielding cover (30) is turned to the inside of the box body (10).

10. An LED display device, including a plurality of box subassemblies (60) that splice setting up, its characterized in that, box subassembly is the box subassembly of the LED display device of any one of claims 1 to 9, adjacent two when box subassembly (60) splice, every shielding lid (30) of box subassembly (60) are in dodge the position, adjacent two in box subassembly (60) plug of plug (21) of box subassembly and another plug socket plug cooperation of plug (21) of box subassembly.

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