LED display device

Abstract

The application provides an LED display device, comprising: a frame comprising an outer frame and a support beam; an LED module detachably connected to the front side of the frame; a rear cover detachably connected to the rear side of the frame, the frame, the LED module and the rear cover surrounding a containing space; a board card assembly arranged in the containing space, the board card assembly comprising a support substrate and a first board card arranged on the front side of the support substrate and capable of being plugged with the LED module, the support substrate comprising a main body plate extending along a first direction and an extension plate arranged on the side of the main body plate and extending along a second direction, wherein the second direction is perpendicular to the first direction, and wherein the support beam is provided with a avoiding structure corresponding to the position of the extension plate. The technical scheme of the application can effectively solve the problem that the box frame in the related art cannot be applied to the application scene of each column having more LED modules.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of LED display, in particular to an LED display device. BACKGROUND

[0002] With the continuous development of LED display technology, large LED display screens are increasingly applied to different scenarios. Generally, a large LED display screen is composed of a plurality of LED display devices arranged according to certain rules. In the related art, an LED display device usually includes a box frame, an LED module, a rear cover and the like, and a power supply unit, a data processing unit, a control unit and the like are usually arranged inside the LED display device.

[0003] Workers usually arrange LED module arrays to form a large-size LED display screen, for example, the LED modules are arranged in a 2*2, 2*4 or 3*4 manner. In view of cost, LED modules with different size parameters can be arranged in different array manners on the front side of a box frame of one type, i.e., the versatility of the box frame is enhanced, and there is no need for each type of LED module to be adapted to one type of box frame, for example, the same box frame can be matched with a 3(row)*4(column) No. 1 LED module, a 2(row)*4(column) No. 2 LED module or a 1(row)*4(column) No. 3 LED module. However, the change in the number of LED modules in each column also changes the position of the plug-in connector on the LED module. The more the number of LED modules on each column, the closer the plug-in connectors of the two LED modules on the uppermost side and the lowermost side to the edge position of the box frame. Since the box frame is internally provided with a support beam for supporting the LED module, if the vertical size of the control board is increased as a whole, interference with the support beam will occur. Therefore, the box frame in the related art cannot be applied to the application scenario in which each column has a large number of LED modules.

[0004] Therefore, there is a problem in the technical field that the box frame cannot be applied to the application scenario in which each column has a large number of LED modules. SUMMARY

[0005] The main purpose of the present application is to provide an LED display device to solve the problem that the box frame in the related art cannot be applied to the application scenario in which each column has a large number of LED modules.

[0006] In order to achieve the above object, the present application provides an LED display device, comprising: a frame comprising an outer frame and a support beam; an LED module detachably connected to the front side of the frame; a rear cover detachably connected to the rear side of the frame, the frame, the LED module and the rear cover surrounding to form an accommodation space; a board card assembly arranged in the accommodation space, the board card assembly comprising a support substrate and a first board card arranged on the front side of the support substrate and capable of being plugged with the LED module, the support substrate being used for supporting the first board card, the support substrate comprising a main body plate extending along a first direction and an extension plate arranged on the side of the main body plate and extending along a second direction, wherein the second direction is perpendicular to the first direction, and wherein the support beam is provided with a avoiding structure corresponding to the position of the extension plate.

[0007] Further, the extension plate comprises a first extension plate and a second extension plate arranged on the two opposite sides of the main body plate along the second direction.

[0008] Further, the first direction is a horizontal direction, the second direction is a vertical direction, the support beam comprises a first cross beam and a second cross beam arranged in the outer frame, the first extension plate is arranged on the lower side of the main body plate, and the second extension plate is arranged on the upper side of the main body plate; the first cross beam comprises a plurality of first main body segments and a plurality of first rear convex segments, the first main body segments and the first rear convex segments are arranged alternately, the first extension plate is a plurality of, the plurality of first rear convex segments are arranged one by one corresponding to the plurality of first extension plates, and the LED module is connected with the first main body segment, the first extension plate is located between the LED module and the first rear convex segment; the second cross beam comprises a plurality of second main body segments and a plurality of second rear convex segments, the second main body segments and the second rear convex segments are arranged alternately, the second extension plate is a plurality of, the plurality of second rear convex segments are arranged one by one corresponding to the plurality of second extension plates, and the LED module is connected with the second main body segment, the second extension plate is located between the LED module and the second rear convex segment.

[0009] Further, one of the second rear convex segment and the first rear convex segment protrudes rearward from the other of the second rear convex segment and the first rear convex segment.

[0010] Further, the first extension plate is a plurality of, a part of the plurality of first extension plates is a first plate body, the first board card comprises a first extension part corresponding to the first plate body, the front side of the first extension part is provided with a first plug connector capable of being plugged with the LED module, the free end of the first extension plate is provided with a second plug connector, the first end of the second plug connector is connected with the first extension part, and the frame is provided with a plug hole corresponding to the second end of the second plug connector.

[0011] Further, the rest of the plurality of first extension plates is a second plate body, the first board card comprises a second extension part corresponding to the second plate body, the front side of the second extension part is provided with a third plug connector capable of being plugged with the LED module, and the width of the second extension part is smaller than the width of the first extension part.

[0012] Further, the frame further comprises a support structure arranged on the outer frame or the support beam, and the LED display device further comprises a connecting plate connected between one side of the board card assembly and the support structure, a first surface of the connecting plate is connected with the board card assembly and the support structure, the connecting plate and the board card assembly are connected by a first fastener penetrating in a direction from the first surface to a second surface of the connecting plate, and the connecting plate and the support structure are connected by a second fastener penetrating in a direction from the second surface to the first surface of the connecting plate, wherein one of the first surface and the second surface of the connecting plate is a front surface, and the other is a rear surface.

[0013] Further, the LED display device further comprises a second board card which is detachably connected to the rear cover.

[0014] Further, the rear cover comprises a rear cover body, a surrounding cover and a cover plate, the rear cover body is provided with a mounting gap, the surrounding cover is arranged around the outer periphery of the mounting gap and extends towards the front, the front side of the surrounding cover is provided with the cover plate, the surrounding cover and the cover plate form a placement space for accommodating the external wire, the external wire comprises a wire body and a fourth connector arranged at the end of the wire body, the surrounding cover is provided with a avoiding gap, the second board card is arranged corresponding to the avoiding gap, and the fourth connector is connected to the second board card through the avoiding gap.

[0015] Further, the LED display device further comprises a baffle arranged on the side of the second board card facing the avoiding gap, the baffle is used for blocking the avoiding gap, the baffle is provided with a through hole for the fourth connector to pass through, and the second board card is provided with a fifth connector corresponding to the through hole; the cover plate and the surrounding cover are detachably connected.

[0016] Further, the LED display device further comprises a second board card which is detachably connected to the rear cover, and the board card assembly further comprises a third board card arranged on the rear side of the support substrate, the first board card is a control card, the second board card is a video card, and the third board card is a distribution board.

[0017] According to the technical scheme, the frame comprises an outer frame and a support beam for supporting the LED module; the board card assembly is arranged in the accommodating space formed by the frame, the LED module and the rear cover, and the board card assembly comprises a support substrate and a first board card; the support substrate comprises a main plate and an extension plate, and the main plate and the extension plate can provide support for the first board card; the shape of the first board card can be adapted to the main plate and the extension plate, so that the part of the first board card corresponding to the extension plate can also be provided with the plug-in connector in addition to the part of the first board card corresponding to the main plate and provided with the plug-in connector connected with the LED module; the support beam is provided with an avoiding structure capable of avoiding the extension plate, so that the size of the extension plate in the second direction can be set to be larger; when the LED modules of different sizes are used, the plug-in connectors corresponding to the LED modules can be arranged on the parts of the first board card corresponding to the main plate and the extension plate according to the specific size or array mode of the LED modules; when the plug-in connectors of the two LED modules located at the outermost sides in a column or a row are very close to the edge position of the frame, the size of the extension plate in the second direction and the size of the part of the first board card corresponding to the extension plate in the second direction only need to be increased, so that the plug-in connectors of the LED modules located at the outermost sides can be plugged into the plug-in connectors arranged on the first board card, and therefore, the first board card can be applied to the application scenario of each column or each row having a large number of LED modules; when the board card assembly needs to be disassembled for maintenance, the worker only needs to directly perform one-time disassembly operation on the board card assembly, so that all the plug-in connectors are loosened from the corresponding LED modules, and therefore, multiple plugging and unplugging operations are not needed. Therefore, the technical scheme can effectively solve the problem that the box frame in the related art cannot be applied to the application scenario of each column having a large number of LED modules. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings constituting a part of the specification of the present application are used to provide further understanding of the present application, and the illustrative embodiments of the present application and the description thereof are used to explain the present application, and do not constitute improper limitations on the present application. In the drawings:

[0019] Figure 1 An exploded structural schematic view of an embodiment of the LED display device according to the present application is shown;

[0020] Figure 2 A front view schematic view of the frame and the board card assembly of the LED display device of Figure 1 is shown;

[0021] Figure 3 An enlarged schematic view of part A of the LED display device of Figure 2 is shown;

[0022] Figure 4 An exploded structural schematic view of the frame and the board card assembly of Figure 2 is shown.

[0023] Figure 5 a rear view schematic diagram of a frame and board assembly of the LED display device of Figure 1

[0024] Figure 6 a side view schematic diagram of the frame and board assembly of Figure 2

[0025] Figure 7 a perspective structural schematic diagram of a support substrate of the LED display device of Figure 1

[0026] Figure 8 a rear view schematic diagram of the support substrate of Figure 7

[0027] Figure 9 a perspective structural schematic diagram of a connecting plate of the LED display device of Figure 1

[0028] Figure 10 a perspective structural schematic diagram of a rear cover of the LED display device of Figure 1

[0029] Figure 11 a perspective structural schematic diagram of the rear cover of Figure 10

[0030] Figure 12 a perspective structural schematic diagram of a second board and a baffle of the LED display device of Figure 1

[0031] wherein the above drawings include the following reference signs:

[0032] a, first direction; b, second direction; d1, width of the second extension; d2, width of the first extension;

[0033] 10, frame; 11, outer frame; 12, first cross beam; 13, second cross beam; 131, second main section; 132, second rear convex section; 14, support structure;

[0034] 20, LED module;

[0035] 30, rear cover; 31, rear cover main body; 311, mounting gap; 32, surrounding cover part; 321, avoiding gap; 33, cover plate; 34, fourth plug-in part;

[0036] ​​​​​​​​40, board assembly; 41, support substrate; 411, main plate; 412, extension plate; 413, first extension plate; 4131, first plate body; 4132, second plate body; 414, second extension plate; 42, first board; 421, first extension; 422, first plug; 423, second extension; 424, second plug; 425, third plug; 43, third board; 44, power supply; 45, support part; 46, first heat dissipation area; 47, second heat dissipation area;

[0037] 50, connecting plate; 51, first fastener; 52, second fastener;

[0038] 60, second board;

[0039] 70, baffle; 71, fifth plug; 72, through hole;

[0040] 81, bump; 82, groove. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative in nature and by no means as any limitation to the present application and its application or use. All other embodiments obtained by a person of ordinary skill in the art without creative work on the basis of the embodiments in the present application shall fall within the scope of protection of the present application.

[0042] As shown in the drawings, Figures 1 to 8 The present application provides an LED display device, and an embodiment of the LED display device of the present application includes: a frame 10 including an outer frame 11 and a support beam; an LED module 20 detachably connected to the front side of the frame 10; a rear cover 30 detachably connected to the rear side of the frame 10, the frame 10, the LED module 20 and the rear cover 30 surrounding to form an accommodation space; a board assembly 40 arranged in the accommodation space, the board assembly 40 including a support substrate 41 and a first board 42 arranged on the front side of the support substrate 41 and capable of being plugged with the LED module 20, the support substrate 41 being used for supporting the first board 42, the support substrate 41 including a main plate 411 extending along a first direction a and an extension plate 412 arranged on the side of the main plate 411 and extending along a second direction b, wherein the second direction b is perpendicular to the first direction a; wherein the support beam is provided with a avoiding structure corresponding to the position of the extension plate 412.

[0043] According to the technical scheme of the embodiment, the frame 10 comprises an outer frame 11 for supporting the LED module and a support beam; the board card assembly 40 is arranged in the accommodating space formed by the frame 10, the LED module 20 and the rear cover 30, and the board card assembly 40 comprises a support substrate 41 and a first board card 42; the support substrate 41 comprises a main body plate 411 and an extension plate 412, and the main body plate 411 and the extension plate 412 can provide support for the first board card 42; the shape of the first board card 42 can be adapted to the main body plate 411 and the extension plate 412, so that the part of the first board card 42 corresponding to the extension plate 412 can also be provided with the plug-in connector for connecting with the LED module 20 in addition to the part of the first board card 42 corresponding to the main body plate 411; the support beam is provided with an avoiding structure capable of avoiding the extension plate 412, so the size of the extension plate 412 in the second direction b can be set to be larger; when the LED module 20 of different sizes is used, the plug-in connectors corresponding to the LED module can be arranged on the parts of the first board card 42 corresponding to the main body plate 411 and the extension plate 412 according to the specific size or array mode of the LED module 20; when the plug-in connectors of the two LED modules located at the outermost sides in a column or a row are very close to the edge position of the frame 10, it is only needed to increase the size of the extension plate 412 in the second direction b and the size of the part of the first board card 42 corresponding to the extension plate 412 in the second direction b, so that the plug-in of the plug-in connectors of the LED modules located at the outermost sides with the plug-in connectors arranged on the first board card 42 can be realized; when the board card assembly 40 needs to be disassembled for maintenance, the staff only needs to directly disassemble the board card assembly 40 once to make all the plug-in connectors loose from the corresponding LED module 20, so that multiple plug-in operations are not needed. Therefore, the technical scheme of the embodiment can effectively solve the problem that the box frame in the related art cannot be applied to the application scenario of each column having a large number of LED modules.

[0044] It should be noted that in the embodiment, the first direction a is the length direction of the support substrate 41, that is, the length direction of the LED module, and the second direction b is the width direction of the support substrate 41, that is, the width direction of the LED module. In this paper, front, rear, upper and lower respectively refer to: when the LED module is installed on the wall, the front refers to the side of the LED module facing the viewer, the rear refers to the side of the LED module close to the wall, the upper refers to the side of the LED module away from the ground, and the lower refers to the side of the LED module close to the ground.

[0045] As Figures 1 to 8As shown, the extension plate 412 includes a first extension plate 413 and a second extension plate 414 arranged on opposite sides of the main plate 411 along the second direction b. In the present embodiment, the main plate 411 is arranged in the middle of the accommodating space, and electrical elements such as power supplies can be arranged on the main plate 411, so that the four sides of the accommodating space of the LED display device have space to install other components, such as connectors for connecting with external structures, reinforced beam structures (first cross beam 12 and second cross beam 13 described below), etc., thereby making the layout of the accommodating space more reasonable and improving the utilization rate of space.

[0046] As shown in the drawings, Figures 1 to 6 The first direction a is a horizontal direction, and the second direction b is a vertical direction. The support beam includes a first cross beam 12 and a second cross beam 13 arranged in the outer frame 11. The first extension plate 413 is arranged on the lower side of the main plate 411, and the second extension plate 414 is arranged on the upper side of the main plate 411. The first cross beam 12 includes a plurality of first main segments and a plurality of first rear convex segments, and the first main segments and the first rear convex segments are arranged alternately. The first extension plate 413 is a plurality of plates, and the plurality of first rear convex segments are arranged one-to-one with the plurality of first extension plates 413. The LED module 20 is connected with the first main segments, and the first extension plate 413 is located between the LED module 20 and the first rear convex segment. The second cross beam 13 includes a plurality of second main segments 131 and a plurality of second rear convex segments 132, and the second main segments 131 and the second rear convex segments 132 are arranged alternately. The second extension plate 414 is a plurality of plates, and the plurality of second rear convex segments 132 are arranged one-to-one with the plurality of second extension plates 414. The LED module 20 is connected with the second main segments 131, and the second extension plate 414 is located between the LED module 20 and the second rear convex segment 132.

[0047] In the present embodiment, the front side of the first main segments of the first cross beam 12 and the second main segments 131 of the second cross beam 13 are provided with a magnet structure, and the rear side of the LED module is provided with a magnetic material structure magnetically attracted to the magnet structure, so that the LED module can be stably connected with the frame 10, and it is also convenient for the operator to disassemble and assemble. The first rear convex segment is arranged one-to-one with the first extension plate 413, and the first extension plate 413 is located between the LED module 20 and the first rear convex segment, so that the first extension plate 413 can be connected with the LED module 20 and the first extension plate 413 will not interfere with the first cross beam 12. The second rear convex segment 132 is arranged one-to-one with the second extension plate 414, and the second extension plate 414 is located between the LED module 20 and the second rear convex segment 132, so that the second extension plate 414 can be connected with the LED module 20 and the second extension plate 414 will not interfere with the second cross beam 13.

[0048] It should be noted that the "alternately arranged" refers to that the main body section is arranged between two rear convex sections; in the embodiment, the two ends of the first cross beam 12 are both first main body sections, the first main body sections at the two ends of the first cross beam 12 are connected with the outer frame 11 (mentioned hereinafter) respectively, and the two ends of the second cross beam 13 are both second main body sections 131, the second main body sections 131 at the two ends of the second cross beam 13 are connected with the outer frame 11 respectively. In the embodiment not shown in the figure, the end of the first cross beam can be a first rear convex section or a first main body section; the end of the second cross beam can be a second rear convex section or a second main body section. The "first rear convex section" and "second rear convex section 132" are also the "avoiding structure" mentioned above.

[0049] As shown in Figures 1 to 6 , one of the second rear convex section 132 and the first rear convex section is convex rearwardly of the other. In the embodiment, the second rear convex section 132 is convex rearwardly of the first rear convex section, that is, the rear surface of the second rear convex section 132 is located at the rear side of the rear surface of the first rear convex section, so that other electrical elements can be arranged at the rear side of the first rear convex section. In this way, on the basis of realizing the smooth disassembly of the board card assembly 40, the space at the rear side of the first rear convex section can also be fully utilized.

[0050] Specifically, taking the disassembly of the board card assembly 40 as an example, the disassembly steps are described as follows:

[0051] 1) Remove the rear cover 30 and pull out the related plug-in elements;

[0052] 2) Unscrew the second fastener 52 (mentioned hereinafter);

[0053] 3) Lift the board card assembly 40 about 8 mm along the front-to-rear direction, so that the plug-in elements on the first board card 42 are separated from the LED module;

[0054] 4) Move the board card assembly 40 upward until the bottom of the first extension plate 413 is higher than the first cross beam 12;

[0055] 5) Rotate the board card assembly 40 with its upper end as the rotation center, so that its lower end is rotated about 10 degrees rearwardly;

[0056] 6) Keep the board card assembly 40 in the inclined state and move it downward until the top of the second extension plate 414 is lower than the second cross beam 13;

[0057] 7) Take out the board card assembly 40 along the front-to-rear direction.

[0058] As shown in Figures 1 to 8As shown, the first extension plates 413 are multiple, and part of the multiple first extension plates 413 are first plate bodies 4131, the first board 42 includes a first extension part 421 corresponding to the first plate body 4131, the front side of the first extension part 421 is provided with a first plug-in part 422 capable of being plugged with the LED module 20, the free end of the first extension plate 413 is provided with a second plug-in part 424, the first end of the second plug-in part 424 is connected with the first extension part 421, and the frame 10 is provided with a plug-in hole corresponding to the second end of the second plug-in part 424. The second plug-in part 424 is provided so that the first board 42 can be connected with an external power supply, so that the external power supply can supply power to the LED display device.

[0059] As shown in Figures 1 to 8 the remaining part of the multiple first extension plates 413 are second plate bodies 4132, the first board 42 includes a second extension part 423 corresponding to the second plate body 4132, and the front side of the second extension part 423 is provided with a third plug-in part 425 capable of being plugged with the LED module 20, wherein the width d1 of the second extension part 423 is less than the width d2 of the first extension part 421. The first plug-in part 422 and the third plug-in part 425 are both used for connecting with the LED module 20, and since the first extension part 421 needs to be provided with the first plug-in part 422 and the second plug-in part 424, and the second extension part 423 only needs to be provided with the third plug-in part 425, the width d2 of the first extension part 421 needs to be greater than the width d1 of the second extension part 423. In this embodiment, two power supplies are provided for power backup, so that two first extension parts 421 are correspondingly provided, and the two first extension parts 421 are respectively arranged at the two ends of the first board 42, and multiple second extension parts 423 are arranged between the two first extension parts 421.

[0060] As shown in Figures 1 to 5 and Figure 9 the frame 10 further includes a support structure 14 arranged on the outer frame 11, and the LED display device further includes a connecting plate 50 connected between one side of the board assembly 40 and the support structure 14, the first surface of the connecting plate 50 is connected with the board assembly 40 and the support structure 14, the connecting plate 50 and the board assembly 40 are connected through a first fastener 51 penetrating in the direction from the first surface to the second surface of the connecting plate 50, and the connecting plate 50 and the support structure 14 are connected through a second fastener 52 penetrating in the direction from the second surface to the first surface of the connecting plate 50, wherein one of the first surface and the second surface of the connecting plate 50 is a front surface, and the other is a rear surface.

[0061] In the embodiment, the connecting plates 50 are two, which are arranged on the opposite sides of the board card assembly 40 in the first direction a, and the board card assembly 40 and the support structure 14 are connected to the front surfaces of the connecting plates 50. The connecting plate 50 and the board card assembly 40 are connected by the first fasteners 51 arranged from front to back, and the connecting plate 50 and the support structure 14 are connected by the second fasteners 52 arranged from back to front. When performing front maintenance, the worker only needs to loosen the first fasteners 51, and then the board card assembly 40 can be removed from one side of the front surface of the connecting plate 50. When performing back maintenance, the worker only needs to loosen the second fasteners 52, and then the connecting plate 50 and the board card assembly 40 can be removed from one side of the back surface of the connecting plate 50. Thus, the front and back maintenance operations of the LED display device are realized. In addition, in other embodiments, the support structure can also be arranged on the support beam.

[0062] As shown in Figure 4 , Figure 10 and Figure 12 , the LED display device further comprises a second board card 60, which is detachably connected to the rear cover 30. When performing front maintenance, the worker can directly remove the second board card 60 from the rear cover 30, so as to maintain the second board card 60. When performing back maintenance, the worker directly removes the rear cover 30, and the second board card 60 is removed together with the rear cover 30, so that the worker can maintain the second board card 60.

[0063] As shown in Figures 10 to 12 , the rear cover 30 comprises a rear cover body 31, a surrounding cover part 32 and a cover plate 33. The rear cover body 31 is provided with a mounting gap 311. The surrounding cover part 32 surrounds the outer periphery of the mounting gap 311 and extends towards the front. The front side of the surrounding cover part 32 is provided with the cover plate 33. The surrounding cover part 32 and the cover plate 33 form a placement space for accommodating external wires. The external wires comprise a wire body and a fourth plug-in connector 34 arranged at the end of the wire body. The surrounding cover part 32 is provided with a avoiding gap 321, and the second board card 60 is arranged corresponding to the avoiding gap 321. The fourth plug-in connector 34 is plug-in connected with the second board card 60 through the avoiding gap 321.

[0064] For the use scenario that the rear side of the LED display device needs to be close to the mounting structure such as wall, when the worker can only perform front maintenance on the LED display device, the worker removes the second board card 60. At this time, the external wires can also enter the accommodation space through the avoiding gap 321. The worker can maintain the second board card 60 and the external wires in the accommodation space, and can also facilitate the worker to perform the plug-in and pull-out operation of the fourth plug-in connector 34 and the second board card 60, so that the worker can easily perform the front maintenance operation.

[0065] Since the LED display device is close to the wall on which the LED display device is installed, the space between the LED display device and the wall is small, so the avoidance gap 321 is arranged on the upper side wall of the enclosing part 32, compared with arranging the avoidance gap 321 on other positions of the enclosing part 32 (for example, arranging the avoidance gap 321 on the front side wall of the enclosing part 32), the advantage is that when the LED display device is installed on the wall, the avoidance gap 321 is in the horizontal plane, and the worker can easily vertically pass the fourth plug-in piece 34 through the avoidance gap 321, so that the plug-in connection operation of the fourth plug-in piece 34 and the second board card 60 becomes easy.

[0066] As shown in Figures 10 to 12 , the LED display device further comprises a baffle 70 arranged on the side of the second board card 60 facing the avoidance gap 321, the baffle 70 is used to block the avoidance gap 321, the baffle 70 is provided with a through hole 72 through which the fourth plug-in piece 34 passes, and the second board card 60 is provided with a fifth plug-in piece 71 corresponding to the through hole 72. The baffle 70 can block the avoidance gap 321, so that the internal space in the LED display device forms a closed space, avoiding the dust and other impurities outside the LED display device from entering the internal space, thereby avoiding the impurities from polluting the components in the internal space. The baffle 70 is provided with a through hole 72, and the fourth plug-in piece 34 can pass through the through hole 72. When performing front maintenance, the worker removes the second board card 60, at this time, the baffle 70 is also removed with the second board card 60, and the fourth plug-in piece 34 and the external wire also enter the containing space with the second board card 60, so that the worker's front maintenance operation becomes convenient.

[0067] In the embodiment, the positioning hole and the positioning column arranged in the positioning hole are arranged between the rear cover 30 and the second board card 60, the positioning column is vertically arranged on the rear cover 30, and the positioning hole is arranged on the second board card 60. When the second board card 60 is installed, the second board card 60 and the rear cover 30 can be accurately positioned, and after the second board card 60 and the rear cover 30 are positioned, the worker can conveniently perform subsequent fastening operation, for example, the worker fastens the second board card 60 on the rear cover 30 by using the fixing bolt.

[0068] As shown in Figures 10 to 12As shown, the shielding plate 33 is detachably connected with the surrounding shielding part 32. The front side of the surrounding shielding part 32 is formed with a gap part. When the second board card 60 is to be removed, the second board card 60 needs to be moved forward first, so that the positioning hole on the second board card 60 is separated from the positioning column, and then the second board card 60 is moved upward. The gap part has the advantage that when the second board card 60 is moved forward by the worker after the shielding plate 33 is removed, the external connecting wire and the fourth plug-in part 34 will also move forward and pass through the gap part, so that the external connecting wire and the fourth plug-in part 34 will not interfere with the front wall of the surrounding shielding part.

[0069] In addition, in the embodiment, the shielding plate 33 protrudes upward from the baffle plate 70. Due to the limitation of the processing process, there will be a gap between the shielding plate 33 and the baffle plate 70. The shielding plate 33 protrudes upward from the baffle plate 70, so that the gap becomes a narrow channel in the up-down direction. Dust and other impurities are not easy to move upward against the action of gravity, so that the impurities are not easy to enter the internal space through the narrow channel in the up-down direction, thereby reducing the possibility of impurities entering the internal space.

[0070] As shown in Figures 1 to 10 , the LED display device further comprises a second board card 60 detachably connected to the rear cover 30. The board card assembly 40 further comprises a third board card 43 arranged on the rear side of the support substrate 41. The first board card 42 is a control card, the second board card 60 is a video card, and the third board card 43 is a distribution board. The front side of the second board card 60 is provided with a sixth plug-in part, the rear side of the third board card 43 is provided with a seventh plug-in part which is plug-in matched with the sixth plug-in part, the rear side of the first board card 42 is provided with an eighth plug-in part, and the front side of the third board card 43 is provided with a ninth plug-in part which is plug-in matched with the eighth plug-in part, so as to realize the electrical connection between the first board card 42, the third board card 43 and the second board card 60. The control card is used to transmit power and control signals to the LED module 20. The distribution board is used to transmit control signals to a plurality of LED display devices arranged side by side in the transverse direction. The video card is used to process video signals.

[0071] In addition, as shown in Figure 2 and Figure 3 , in the embodiment, the protruding block 81 is arranged on the support structure 14, and the recess 82 is arranged on the support substrate 41. The protruding block 81 and the recess 82 are matched with each other, so that the support substrate 41 can be positioned with the support structure 14 during installation.

[0072] As shown in Figure 5 , Figure 7 and Figure 8As shown, in the embodiment, the power supply 44 is arranged at the rear side of the support substrate 41 and is electrically connected with the first board card 42 to supply power for the LED display device. The rear side of the support substrate 41 is provided with a first heat dissipation area 46 corresponding to the power supply 44, and the front side of the support substrate 41 is provided with a second heat dissipation area 47 corresponding to the power supply 44. When manufacturing the LED display device, the support substrate 41 needs to be painted, at this time, the areas corresponding to the power supply 44 and the heat generating elements of the first board card 42 can not be painted to form the light surface first heat dissipation area 46 and the second heat dissipation area 47, and in use, the first heat dissipation area 46 is in contact with the power supply 44, and the second heat dissipation area 47 is in contact with the heat generating elements of the first board card 42, which can promote the heat dissipation of the power supply 44 and the heat generating elements of the first board card 42.

[0073] As shown, Figure 7 As shown, in the embodiment, the support substrate 41 includes a main plate 411 and a support part 45 arranged at the front side of the main plate 411, the support part 45 is supported at the rear side of the first board card 42, and an avoiding space is formed between the rear side of the first board card 42 and the front side of the main plate 411 to avoid the electrical elements installed at the rear side of the first board card 42. The main plate 411 is stably connected with the first board card 42 through the support part 45, which also makes the board card assembly 40 have greater structural strength to meet the plug-in with the LED module, and the support part 45 includes support ribs and support columns.

[0074] In the description of the present application, it should be understood that the orientation words such as "front, rear, upper, lower, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and in the absence of contrary description, these orientation words do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, therefore cannot be understood as a limitation on the protection scope of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0075] In addition, it should be noted that the use of "first", "second" and the like to limit parts is only for the convenience of distinguishing the corresponding parts, and in the absence of further declaration, the above words have no special meaning, therefore cannot be understood as a limitation on the protection scope of the present application.

[0076] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An LED display device, characterized by, The application relates to an LED display device. The LED display device comprises a frame (10), an LED module (20), a rear cover (30), a board card assembly (40), and a connecting plate (50). The frame (10) comprises an outer frame (11) and a support beam. The LED module (20) is detachably connected to the front side of the frame (10). The rear cover (30) is detachably connected to the rear side of the frame (10), and the frame (10), the LED module (20) and the rear cover (30) form an accommodating space. The board card assembly (40) is arranged in the accommodating space, and comprises a support base plate (41) and a first board card (42) arranged on the front side of the support base plate (41) and capable of being plug-connected with the LED module (20). The support base plate (41) is used for supporting the first board card (42), and comprises a main plate (411) extending along a first direction (a) and an extension plate (412) arranged on the side of the main plate (411) and extending along a second direction (b). The second direction (b) is perpendicular to the first direction (a). The support beam is provided with a avoiding structure corresponding to the position of the extension plate (412). The extension plate (412) comprises a first extension plate (413) and a second extension plate (414) arranged on the opposite sides of the main plate (411) along the second direction (b).

2. The LED display apparatus of claim 1, wherein, The first extension plate (413) is a plurality of first plate bodies (4131), and the first board card (42) comprises a first extension part (421) corresponding to the first plate body (4131). The front side of the first extension part (421) is provided with a first plug connector (422) capable of being plug-connected with the LED module (20). The free end of the first extension plate (413) is provided with a second plug connector (424), the first end of the second plug connector (424) is connected with the first extension part (421), and the frame (10) is provided with a plug hole corresponding to the second end of the second plug connector (424). The frame (10) further comprises a support structure (14) arranged on the outer frame (11) or the support beam. The LED display device further comprises the connecting plate (50) connected between one side of the board card assembly (40) and the support structure (14). The connecting plate (50) is two, and is arranged on the opposite sides of the board card assembly (40) along the first direction (a). The first direction (a) is a horizontal direction, the second direction (b) is a vertical direction, the support beam comprises a first horizontal beam (12) and a second horizontal beam (13) arranged in the outer frame (11) at intervals. The first extension plate (413) is arranged on the lower side of the main plate (411), and the second extension plate (414) is arranged on the upper side of the main plate (411). The first cross beam (12) comprises a plurality of first body segments and a plurality of first rear convex segments, the first body segments and the first rear convex segments are arranged alternately, the first extension plates (413) are a plurality, a plurality of the second rear convex segments (132) and a plurality of the second extension plates (414) are one-to-one corresponding arrangement, and the LED module (20) is connected with the second body segment (131), the second extension plate (414) is located between the LED module (20) and the second rear convex segment (132). The second cross beam (13) comprises a plurality of second body segments (131) and a plurality of second rear convex segments (132), the second body segments (131) and the second rear convex segments (132) are arranged alternately, the second extension plates (414) are a plurality, a plurality of the second rear convex segments (132) and a plurality of the second extension plates (414) are one-to-one corresponding arrangement, and the LED module (20) is connected with the second body segment (131), the second extension plate (414) is located between the LED module (20) and the second rear convex segment (132).

3. The LED display apparatus of claim 2, wherein, The second rear convex segment (132) and one of the first rear convex segments protrude rearward from the other of the second rear convex segment (132) and the first rear convex segment.

4. The LED display apparatus of claim 1, wherein, The remaining part of the plurality of first extension plates (413) is a second plate body (4132), the first plate card (42) comprises a second extension part (423) corresponding to the second plate body (4132), the front side of the second extension part (423) is provided with a third plug connector (425) capable of plug-in connection with the LED module (20), wherein the width (d1) of the second extension part (423) is less than the width (d2) of the first extension part (421).

5. The LED display apparatus according to any one of claims 1 to 4, characterized in that, The first surface of the connecting plate (50) is connected with the plate card assembly (40) and the support structure (14), the connecting plate (50) and the plate card assembly (40) are connected by the first fastener (51) penetrating in the direction from the first surface to the second surface of the connecting plate (50), and the connecting plate (50) and the support structure (14) are connected by the second fastener (52) penetrating in the direction from the second surface to the first surface of the connecting plate (50), wherein one of the first surface and the second surface of the connecting plate (50) is a front surface, and the other is a rear surface.

6. The LED display apparatus of any of claims 1-4, wherein, The LED display device further comprises a second plate card (60), which is detachably connected to the rear cover (30).

7. The LED display apparatus of claim 6, wherein, The rear cover (30) comprises a rear cover body (31), a surrounding cover portion (32) and a cover plate (33), the rear cover body (31) is provided with a mounting gap (311), the surrounding cover portion (32) surrounds the outer periphery of the mounting gap (311) and extends towards the front, the front side of the surrounding cover portion (32) is provided with the cover plate (33), the surrounding cover portion (32) and the cover plate (33) form a placing space for accommodating an external wire, the external wire comprises a wire body and a fourth connector (34) provided at the end of the wire body, the surrounding cover portion (32) is provided with an avoiding gap (321), the second board card (60) is provided correspondingly to the avoiding gap (321), the fourth connector (34) is connected to the second board card (60) through the avoiding gap (321).

8. The LED display device according to claim 7, wherein, The LED display device further comprises a baffle (70) provided on the side of the second board card (60) towards the avoiding gap (321), the baffle (70) is used for blocking the avoiding gap (321), the baffle (70) is provided with a through hole (72) through which the fourth connector (34) passes, and the second board card (60) is provided with a fifth connector (71) corresponding to the through hole (72); The cover plate (33) is detachably connected with the surrounding cover portion (32). 9.The LED display device of claim 5, wherein, The LED display device further comprises a second board card (60) detachably connected to the rear cover (30), the board card assembly (40) further comprises a third board card (43) provided on the rear side of the support substrate (41), the first board card (42) is a control card, the second board card (60) is a video card, and the third board card (43) is a distribution board.

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