CN205788942U - A kind of positive and negative assembled LED display module and pin-connected panel LED display - Google Patents

Abstract

The utility model relates to the technical field of LED display screens, in particular to a front and back assembled LED display module and an assembled LED display screen. Wherein, the display module includes a main board body of the module, and via holes are opened on the main board body of the module along the front and rear directions, and a fixing block is arranged on the back side of the main board body of the module, at a position adjacent to the through hole, on the fixing block, A front locking screw is sleeved in a position opposite to the through hole, and a rear screw hole is also provided on the fixing block. The utility model utilizes the cooperation between the through hole and the front locking screw and directly fixes the display module on the display box or the display frame from the front of the display module through the operation of the front locking screw, or it can also be fixed through the screw The combination of connecting parts and rear screw holes directly fixes the display module on the display box or display frame from the back of the display module, thereby increasing the diversity of disassembly and assembly of the display module and display, making It is not restricted by the assembly environment, which greatly improves the convenience of disassembly, maintenance and replacement of the display screen.

Description

A front and back assembled LED display module and an assembled LED display

technical field

The utility model relates to the technical field of LED display screens, in particular to a front and back assembled LED display module and an assembled LED display based on the display module.

Background technique

With the continuous development of LED display technology and the process of urban construction, outdoor LED display screens have been used more and more as a new advertising carrier for communication media. It can not only realize the display of dynamic pictures, but also the content of the pictures can be continuously updated. .

At present, traditional LED display screens (especially those with relatively large areas) are generally formed by splicing multiple small-sized screen units using structural parts. In order to ensure the stability of the splicing structure, the design of the structural parts is very complicated The structure, which also leads to a very slow construction process, time-consuming and labor-intensive, difficult to disassemble and maintain. At the same time, the display part of each screen unit is assembled by multiple display modules. In order to ensure the display effect of the screen unit and the surface flatness of the display part, the display module is generally placed on the screen unit. After the box, the display module is fixed on the box from the rear side of the display module through screws, rivets and other connecting parts; in this way, when one of the display modules fails, the entire screen unit or the entire display needs to be repaired. Only after disassembly can the faulty display module be disassembled, maintained or replaced; usually, in order to avoid the occurrence of the above problems, people generally reserve enough maintenance space on the back of the display screen, so that installers or maintenance personnel can enter the display screen Faced with its installation and maintenance, however, this method will undoubtedly occupy a large building space. When the installation site and environment of the LED display cannot provide this space, it is still necessary to disassemble the entire LED display from the wall for maintenance. Maintenance, which brings great convenience to the maintenance of the display screen.

Therefore, how to propose an improvement scheme to the existing LED display screens has become a technical problem urgently to be solved by technical personnel in the industry.

Utility model content

In view of the deficiencies in the prior art mentioned above, one of the purposes of this utility model is to provide a front and back assembled LED display module with simple and compact structure, convenient disassembly and maintenance; another purpose of this utility model is to provide a LED display module based on The assembled LED display screen formed by the above display modules has the advantages of convenient and fast assembly, stable structure, and convenient maintenance. Front and back assembled LED display modules and assembled LED display screens.

In order to achieve the above object, the utility model adopts the following technical solutions:

A front and back assembled LED display module, which includes a module main body, on which a plurality of through holes are opened along the front and rear directions, the back of the module main body, and each through hole An installation and fixing block is provided at an adjacent position, and a front locking screw is sleeved on the installation and fixing block at a position opposite to the through hole, and at least one rear screw hole is opened on the installation and fixing block.

Preferably, the front locking screw includes a main rod part distributed through the installation and fixing block, a nut part formed on the front end of the main rod part and abutting against the front surface of the installation and fixing block, and extending through the nut part To the polygonal keyhole in the main pole, the polygonal keyhole is centered with the through hole, the cross-sectional shape of the rear end of the main pole is polygonal, and the outer wall of the front end of the main pole is formed with external thread.

Preferably, the installation and fixing block includes a beam plate fixed on the back of the module main body and a longitudinal plate installed in the middle of the cross beam plate and separated from the module main body, and the front locking screw is sleeved on the longitudinal On the plate, the rear screw holes are opened on the beam plate.

Preferably, the main body of the module includes an outer frame and a mask inside the outer frame, an LED light board and a rear cover are sequentially installed from front to back, and the rear end of one of the side walls of the mask or two of them A first dislocation platform is formed at the rear end of two adjacent side walls, and a second dislocation platform is formed at the front end of the side wall symmetrical to the side wall where the first dislocation platform is located on the mask.

An assembled LED display screen, which includes several frames assembled by several assembled structural parts, and at least one display module is installed on the front of each frame, and the display module adopts the above-mentioned A front and back assembled LED display module;

The display module is locked on the frame body from the front side of the frame body through the through hole and through the front locking screw, or is locked from the rear side of the frame body through the first bolt connector sleeved in the rear screw hole on the frame.

Preferably, the assembly structure includes a first corner code installed at the lower right corner of each frame, a second corner code at the lower left corner, a third corner code at the upper right corner, and a fourth corner at the upper left corner code;

The middle part of the right side wall of the first corner code extends to the right to form a first stacking platform, and the bottom surface of the second corner code extends to the left to form a second stacking platform for stacking the first stacking platform The top surface of the third corner code extends to the right to form a third stacking platform for the second stacking platform, and the middle part of the left side wall of the fourth corner code extends to the left to form a third stacking platform for the second stacking platform. The fourth stacking platform in which the three stacking platforms are stacked;

The assembled structure also includes several second bolted joints distributed through the first stacking platform, the second stacking platform, the third stacking platform and the fourth stacking platform.

Preferably, the left side of the first corner code is also formed with a first fixing plate fixed on the right end side of the bottom frame of the frame, and the right side of the second corner code is also formed with a bottom frame fixed to the frame The second fixed plate on the left end side of the third corner code, the third fixed plate fixed on the right end side of the top frame of the frame is also formed on the left side of the third corner code, and the right side of the fourth corner code is also formed with The fourth fixed plate fixed on the left end side of the fixed frame of the frame;

The assembled structure also includes several third bolt connections distributed through the first fixing plate and the third fixing plate and/or distributed through the second fixing plate and the fourth fixing plate.

Preferably, several positioning columns are provided on the upper surface of the second stacking platform, the upper surface of the fourth stacking platform, the upper surface of the body of the third corner code and the upper surface of the body of the fourth corner code, the On the first stacking platform, on the third stacking platform, on the bottom surface of the body of the first corner bracket and the bottom surface of the body of the second corner bracket, there are several positioning holes which match with the positioning columns.

Preferably, a control box is installed in the middle of the rear side of each frame, and the control box includes a bottom case fixed between two symmetrical frames of the frame body and a bottom case fixed in the frame and located in the bottom case. The rear side and the connecting cover plate distributed in parallel with the bottom case, a first card slot is provided on the two symmetrical side walls of the bottom case, and a first card slot is provided on the symmetrical side of the connecting cover plate The second card slot distributed in parallel, an arc-shaped cover plate is installed between the gap formed by the connecting cover plate and the two symmetrical side walls of the bottom case, and the arc-shaped cover plate is opposite to the first card slot The adjacent side is provided with a first carding protrusion aligned with the first card slot, and the side adjacent to the second card slot is provided with a pair of second carding protrusions inserted into the second card slot. .

Preferably, the frame body includes two horizontal frames distributed up and down parallel to each other and two vertical frames with "L"-shaped cross-sections, the horizontal frame and the vertical frame are surrounded by assembled structural parts to form a frame structure , each of the longitudinal frames is provided with an arc-shaped cover plate between the two side walls of the longitudinal frame.

Due to the adoption of the above scheme, the utility model utilizes the cooperation of the through hole and the front locking screw and directly fixes the display module to the display box or the display frame from the front of the display module through the operation of the front locking screw. The display module can also be fixed on the display box or display frame directly from the back of the display module through the cooperation of screws and other connecting parts with the rear screw holes, thus increasing the display module and display disassembly. The diversity of installation makes the disassembly and assembly of the screen body not restricted by the assembly environment, which greatly improves the convenience of disassembly, maintenance and replacement of the display screen, and has strong practical value and market promotion value.

Description of drawings

Fig. 1 is a schematic structural view of a display module of an embodiment of the present invention;

Fig. 2 is a schematic diagram of the assembling state between adjacent display modules according to the embodiment of the present invention;

Fig. 3 is a structural schematic diagram of the front locking screw of the utility model embodiment;

Fig. 4 is a structural schematic diagram of a frame of an embodiment of the present invention;

Fig. 5 is a schematic diagram of the installation state between the display module and the frame of the embodiment of the present invention;

Fig. 6 is a schematic exploded view of the structure of the frame of the embodiment of the present invention;

Fig. 7 is a schematic diagram of the assembly structure of a plurality of frames in the embodiment of the present invention;

Fig. 8 is a schematic diagram of the assembly structure between each corner code in the central area in Fig. 7;

Fig. 9 is a schematic structural view (1) of Fig. 8 in a decomposed state;

Fig. 10 is a schematic diagram (2) of the structure of Fig. 8 in an exploded state.

detailed description

The embodiments of the utility model will be described in detail below in conjunction with the accompanying drawings, but the utility model can be implemented in various ways defined and covered by the claims.

As shown in Figures 1 to 3 and in conjunction with Figure 5, the present embodiment provides a front and back assembled LED display module, which includes a module main body 1, on the module main body 1, along the front and rear directions Several via holes 2 are provided, and a mounting block is provided on the back of the main board body 1 of the module at a position adjacent to each via hole 2, and a mounting block is socketed on the mounting block at a position opposite to the via hole 1. The front locking screw 3 is also provided with at least one rear screw hole 4 on the mounting block. In this way, a separately configured tool (such as a long bar-shaped screwdriver that is suitable for the aperture of the via hole 2, the shape of the end of the screwdriver is matched with the shape of the nut hole of the front locking screw 3, such as a cross-shaped , hexagonal, etc.) lock the front locking screw 3 on the display box or display frame through the through hole 2, so as to realize the front assembly and disassembly of the display module; at the same time, according to the specific environment of assembly or If required, the display module can also be disassembled from the reverse side, that is, the display module can be fixed on the display box or display frame directly from the back of the display module through the cooperation of screws and other connecting parts with the rear screw hole 4 On; thereby increasing the diversity of disassembly and assembly of the display module, making it not restricted by the assembly environment, and greatly improving the convenience of disassembly, maintenance and replacement of the display module.

In order to ensure that the display module can be structurally assembled with the display box or display frame quickly and accurately when the display module is assembled on the front; The nut part 32 formed on the front end of the main rod part 31 and abutted against the front surface of the mounting fixed block and the polygonal lock hole part 33 (which can adopt a regular hexagon) that runs through the nut part 32 and extends into the main rod part 31 shape, certainly not limited to this shape), the polygonal lock hole portion 33 is opposite to the via hole 2, and at the same time, the cross-sectional shape of the rear end portion of the main rod portion 31 is set to a polygonal shape (such as a regular hexagon, etc., but not limited to this shape), an external thread 34 is formed on the outer wall of the front end portion of the main rod portion 31 . In this way, the holes corresponding to the front locking screws 3 can be set on the display box or the display frame in advance (the shape of the entrance of the hole can be the same as the shape of the rear end of the main rod part 31), when the When the display module is assembled, a separately configured tool can be passed through the through hole 2, so that the end of the tool is inserted into the polygonal lock hole part 33, and then the rear end of the main rod part 31 and the corresponding hole position can be used to quickly and accurately insert the main rod part 31 into the corresponding hole, and finally lock the front locking screw 3 on the display box by rotating the front locking screw 3 and using the external thread 34 Or on the display frame.

In order to further optimize the structure of the entire display module, the installation and fixing block of this embodiment includes a beam plate 5 fixed on the back side of the module main board body 1 and a cross beam plate 5 installed in the middle of the cross beam plate 5 and separated from the module main board body 1. The longitudinal plate 6, the front locking screw 3 is sleeved on the longitudinal plate 6, and the rear screw hole 4 is opened on the beam plate 5; in this way, the front locking screw 3 and the rear screw hole 4 can be separated and set separately. The convenience of front disassembly and rear disassembly of the display module is effectively improved.

Since most of the display screens with a large display area are assembled by multiple display modules, in order to realize the seamless splicing between the display modules and ensure the display effect of the display screen, the module main body 1 of this embodiment includes The outer frame 11 and the mask 12, the LED light board (not marked in the figure) and the rear cover 13 in the outer frame 11 are sequentially installed from front to back, and the rear end of one of the side walls of the mask 12 or two of them A first dislocation platform 121 is formed at the rear end of adjacent side walls, and a second dislocation platform 122 is formed at the front end of the side wall symmetrical to the side wall where the first dislocation platform 121 is located on the mask 12 . In this way, when two adjacent display modules are assembled, the dislocation and stacking relationship can be formed by the dislocation platforms formed on the respective masks 12, thereby avoiding the occurrence of large assembly gaps on the front of the display modules, and Finally, the seamless splicing of the screen body is realized.

In addition, an electrical connection seat A and an electrical connection seat B with outlet ports can also be provided on the back side of the module main body 1 according to specific conditions, so as to provide wiring space when one display module is used alone or when multiple display modules are assembled. .

Based on the above display module, as shown in Figures 4 to 10 and combined with Figures 1 to 3, this embodiment also provides an assembled LED display, which includes several assembled structural parts Frames (that is, constitute a large-area display frame), at least one display module is installed on the front of each frame (that is, the front of each frame can be assembled into a display screen by multiple display modules). Display part), the display module of this embodiment adopts the above-mentioned front and back assembled LED display module, and the display module is locked to the frame by the front side of the frame through the through hole 1 and the front locking screw 3 body or through the first bolt connector (not shown in the figure) sleeved in the rear screw hole 4 to be locked on the frame body from the rear side of the frame body. Therefore, the display module of the entire display screen can be disassembled from the front or the reverse side according to the specific installation environment and requirements, especially when the front disassembly is used, the maintenance of the entire display screen will not be limited by the building space; at the same time, it can also be Utilizing the dislocation structure of different display modules installed on two adjacent frame bodies, it is ensured that no excessive assembling gap appears on the front of the display screen.

In order to improve the quickness of display screen assembly and ensure the structural stability of the display screen after assembly; The second corner code 8, the third corner code 9 at the upper right corner, and the fourth corner code 10 at the upper left corner; the frame body of this embodiment can be composed of four frames connected end to end, and pass through the corresponding corner at the end to end code is fixed. Wherein, the middle part of the right side wall of the first corner code 7 extends to the right to form a first stacking platform 71, and the bottom surface of the second corner code 8 extends to the left to form a second stacking platform for the first stacking platform 71 to place. Two stacking platforms 81, the top surface of the third corner bracket 9 is extended to the right to form a third stacking platform 91 for stacking the second stacking platform 81, and the middle part of the left side wall of the fourth corner bracket 10 is formed after extending to the left There is a fourth stacking platform 101 for the stacking of the third stacking platform 91; at the same time, the assembly structure of this embodiment also includes several stacking panels that run through the first stacking platform 71, the second stacking platform 81, and the third stacking platform 91. and the second bolt connection piece a distributed on the fourth stacking platform 101 .

In this way, when the entire display screen includes at least four frames distributed in the shape of a "field", the splicing position at the center of the display screen will present the first stacking platform 71, the second stacking platform 81, the third stacking platform 91 and the fourth stacking platform. In the case where the stacking platforms 101 are stacked in sequence, the corresponding corner codes of the four frames can be locked by using the second bolt connector a here, and the first corner codes will appear at the splicing positions around the display screen. 7 is stacked with the third corner code 9, the second corner code 8 is stacked with the fourth corner code 10, the first stacking platform 71 is stacked with the second stacking platform 81, the third stacking platform 91 is stacked with the fourth stacking platform 101 stacked and other states, the second bolt connector a can be used for further locking in these assembled positions, so that the second bolt connector a can be used to form a strong restraining force on the corresponding stacked corner codes, ensuring that the display screen Structural stability after assembly; when the display screen is composed of several frames distributed in a "one" shape or composed of several sequentially stacked frames, the above structural principle can be used (that is, the corresponding corner codes are stacked or the corresponding stacking platforms are stacked), and are locked by the second bolt connection a.

In order to further improve the structural stability of the assembled display screen and enhance the structural strength of each frame itself, a first fixing plate fixed on the right end side of the bottom frame of the frame is formed on the left side of the first corner 7 72, the second fixed plate 82 fixed on the left end side of the bottom frame of the frame is also formed on the right side of the second corner code 8, and the top frame fixed on the frame body is also formed on the left side of the third corner code 9 The third fixed plate 92 on the right end side of the fourth corner code 10 is also formed with a fourth fixed plate 102 fixed on the left end side of the fixed frame of the frame; at the same time, the assembly structure also includes several penetrating Distributed on the first fixed plate 72 and the third fixed plate 92 and/or pass through the third bolted joints b distributed on the second fixed plate 82 and the fourth fixed plate 102; code to realize the frame assembly and ensure the stability of the frame structure, and at the same time, the third bolt connector b can be used to further lock the two frames that are arranged on top of each other, so that each At least one locking point of the second bolt connection b located outside the frame and one locking point of the third bolt connection c located inside the frame are formed on the corner brackets, so that the overall structure of the display screen can be effectively enhanced of stability.

In order to enhance the quickness of frame assembly, improve the assembly efficiency and enhance the structural stability of the display screen at the same time, on the upper surface of the second stacking platform 81, the upper surface of the fourth stacking platform 101, and the body of the third corner code 9 The surface and the upper surface of the body of the fourth corner bracket 10 are provided with several positioning columns c, correspondingly, on the first stacking platform 71, on the third stacking platform 91, on the bottom surface of the body of the first corner bracket 7 and The bottom surface of the body of the second corner bracket 8 is provided with a plurality of positioning holes d aligned with the positioning columns c. In this way, when the frame is assembled, the alignment of the positioning hole d and the positioning column c can be used to quickly place the corner codes to be aligned in order to be locked by the subsequent bolt connectors, and at the same time , The positioning column c can also indirectly enhance the structural firmness of the stacked corresponding two corner codes.

In order to provide installation space for components such as power supply, system board, etc., a control box is installed in the middle of the rear side of each frame (at this time, the electrical connectors A and B of the display module can be placed in the control box) , the control box of this embodiment includes a bottom case e fixed between two symmetrical frames (such as a top frame and a bottom frame) of the frame body, and a bottom case e fixed in the frame and located on the rear side of the bottom case e and connected to the bottom case e The connecting cover plates f distributed in parallel are provided with a first slot e1 on the two symmetrical side walls (such as the left side wall and the right side wall) of the bottom case e, and are provided on the symmetrical sides of the connecting cover plates f There is a second card slot f1 distributed in parallel with the first card slot e1, and an arc-shaped cover plate g is installed between the gap formed by connecting the cover plate f and the two symmetrical side walls of the bottom case e. On the plate g, on the side adjacent to the first card slot e1, there is a first card protrusion g1 that engages in position with the first card slot e1, and on the side adjacent to the second card slot f1, there is a pair of The second card protrusion g2 is inserted into the second card slot f1. In this way, whether the display module is assembled from the front or the reverse side, the arc-shaped cover plate g can be directly disassembled from the side of the control box, so as to maintain the components in the control box (when the display module is assembled from the front, It only needs to disassemble the display module from the frame to operate; based on this, the front and back disassembly and maintenance performance of the entire display can be realized.

In addition, the control box of this embodiment can also be arranged at the side of the frame body (at this time, the electrical connection seats A and B of the display module can be placed in the control box), so as to facilitate the connection of adjacent display screen units. The control part integrates the wiring and other aspects, that is, the frame body includes two horizontal frames h distributed up and down parallel to each other and two vertical frames k with "L"-shaped cross-sections. The horizontal frame h and the vertical frame can be viewed through assembly The structural parts (that is, the corresponding corner codes) are enclosed in a frame structure, and an arc-shaped cover plate g is installed on each longitudinal frame k between the two side walls of the longitudinal frame k; g and the longitudinal frame k form an independent space similar to the control box. When maintaining the components in the control box, the above-mentioned principle can also be used to disassemble the arc-shaped cover plate g. Of course, the two structures of the control box in this embodiment can exist in the same frame at the same time, and the specific configuration depends on the design requirements and on-site installation requirements.

The above is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. Any equivalent structure or equivalent process conversion made by using the specification of the utility model and the contents of the accompanying drawings may be directly or indirectly used in Other relevant technical fields are all included in the patent protection scope of the present utility model in the same way.

Claims (10)

1. positive and negative assembled LED shows a module, and it includes module mainboard body, it is characterised in that: described module mainboard body Offering several vias above, along the longitudinal direction, the position that the back side of described module mainboard body and each via close on mutually is arranged Have an installation fixed block, relative with via on described installation fixed block in position be socketed with one before tightly lock screw, described installation At least one rearmounted screw it is further opened with on fixed block.

2. a kind of positive and negative assembled LED as claimed in claim 1 shows module, it is characterised in that: tightly lock screw before described Including through installing the mobile jib portion of fixed block distribution, being formed at the front end in mobile jib portion and offset with the front surface installing fixed block Nut portion and the polygon lock hole part offering through nut portion and extend in mobile jib portion, described polygon lock hole part with Via centering, the cross sectional shape of the rearward end in described mobile jib portion is polygon, and the outer wall of the leading section in described mobile jib portion is formed There is external screw thread.

3. a kind of positive and negative assembled LED as claimed in claim 2 shows module, it is characterised in that: described installation fixed block Including be fixed on module mainboard body the back side header board and be installed in header board middle part and with module mainboard body be separated Longitudinal plate, described before tight lock turnbuckle be connected on longitudinal plate, described rearmounted screw is opened on header board.

4. a kind of positive and negative assembled LED as according to any one of claim 1-3 shows module, it is characterised in that: described Module mainboard body includes housing and is the most sequentially equiped with the face shield in housing, LED lamp panel and back shroud, described The rear end of the rear end of one of them sidewall of cover or the adjacent sidewall of two of which is formed with the first dislocation and sets up the stage, described face shield The front end of the sidewall that residing sidewall of above setting up the stage with the first dislocation is symmetrical is formed with the second dislocation and sets up the stage.

5. a pin-connected panel LED display, it is characterised in that: if it includes being assemblied into one by several splicing structure parts Dry framework, the front of each described framework is all equiped with at least one piece of display module, and described display module uses right such as to want Seek a kind of positive and negative assembled LED display module according to any one of 1-4；

Described display module is fixed in framework or by being socketed on via via and by front tight lock screw by the front-side lock of framework The first bolt connection piece in rearmounted screw is locked in framework by the rear side of framework.

6. a kind of pin-connected panel LED display as claimed in claim 5, it is characterised in that: described splicing structure part includes installing The third angle code at the first corner brace at the lower right corner of each framework, the second corner brace of lower right-hand corner, the upper right corner and upper left Fourth angle code at angle；

The middle part of the right side wall of described first corner brace is formed with first and is stacked platform after extending to the right, described second corner brace bottom surface is to the left It is formed after extension and is stacked the second of placement and is stacked platform, after the end face of described the third angle code extends to the right for being stacked platform for first Being formed and be stacked the 3rd of placement and be stacked platform for being stacked platform for second, the middle part of the left side wall of described fourth angle code extends to the left After be formed and be stacked the 4th of placement and be stacked platform for being stacked platform for the 3rd；

Described splicing structure part also include several through first be stacked platform, second be stacked platform, the 3rd be stacked platform and the 4th fold Put the second bolt connection piece of platform distribution.

7. a kind of pin-connected panel LED display as claimed in claim 6, it is characterised in that: the left side also shape of described first corner brace Becoming to have the first fixed plate on the boundary frame area right-hand member side being fixed on framework, the right side of described second corner brace is also formed with being fixed on frame The second fixed plate in the left end side of the boundary frame area of body, the left side of described the third angle code is also formed with being fixed on the top margin frame of framework Right-hand member side on the 3rd fixed plate, the right side of described fourth angle code is also formed with being fixed on the left end side of the deckle frame of framework 4th fixed plate；

Described splicing structure part also includes that several are distributed and/or through second through the first fixed plate and the 3rd fixed plate Fixed plate and the 3rd bolt connection piece of the 4th fixed plate distribution.

8. a kind of pin-connected panel LED display as claimed in claim 6, it is characterised in that: described second is stacked the upper surface of platform Upper, the 4th upper surface being stacked the upper surface of body of the upper surface of platform, the third angle code and the body of fourth angle code is respectively provided with There are several locating dowels, described first are stacked on platform, the 3rd are stacked on platform, on the bottom surface of the body of the first corner brace and second jiao Several holes, location coordinated with locating dowel para-position are all offered on the bottom surface of the body of code.

9. a kind of pin-connected panel LED display as claimed in claim 5, it is characterised in that: in the middle part of the rear side of each described framework All being equiped with a control chamber, described control chamber includes the drain pan being fixed between the two of which symmetry frame of framework and fixes In framework and be positioned at drain pan rear side and with the cover plate that is connected of drain pan parallel distributed, on two symmetrical sides of described drain pan all Be provided with one first draw-in groove, the symmetrical sides of described linking cover plate is provided with one and first draw-in groove parallel distributed second It is equiped with a curved cover plate, described arc between the space that two symmetrical sides of draw-in groove, described linking cover plate and drain pan are formed First card convex engaged with the first draw-in groove para-position and the second card it is provided with on side adjacent with the first draw-in groove on shape cover plate The para-position sleeve the second card convex in the second draw-in groove it is provided with on the side that groove is adjacent.

10. a kind of pin-connected panel LED display as claimed in claim 5, it is characterised in that: described framework includes two each other The most L-shaped longitudinal frame of horizontal frame in upper and lower parallel distributed and two cross sections, described horizontal frame and longitudinal edge Frame encloses in frame structure by splicing structure part, on each described longitudinal frame, between two sidewalls of longitudinal frame All it is equiped with a curved cover plate.