CN114708805A

CN114708805A - Display screen box and LED display screen

Info

Publication number: CN114708805A
Application number: CN202210457586.9A
Authority: CN
Inventors: 贺爱民; 金砾
Original assignee: Zhejiang Dacai Photoelectric Technology Co ltd
Current assignee: Zhejiang Dacai Photoelectric Technology Co ltd
Priority date: 2022-04-28
Filing date: 2022-04-28
Publication date: 2022-07-05
Also published as: WO2023206601A1

Abstract

The invention relates to the technical field of LED display screens, in particular to a display screen box body which comprises a bottom wall and side walls, wherein the bottom wall and the side walls form a concave cavity with a rectangular structure, connecting columns protruding outwards are arranged at two ends of the outer surface of each side wall, and the connecting columns on the adjacent side walls are fixedly connected through connecting pieces. The utility model provides a LED display screen, includes a plurality of display screen box, and the array has a plurality of display module assembly in every display screen box, and every display module assembly passes through adjusting device and sets up in the display screen box, and adjusting device cooperation is used for realizing that display module assembly is in the removal of XYZ orientation and the rotation of XYZ orientation. According to the display screen box body and the LED display screen, the splicing precision of the LED display screen can be improved, the machining precision requirements of the display screen box body and the display module can be reduced, the LED on the display module can be well protected, meanwhile, the connection operation can be carried out without disassembling the display module, and the maintenance is simple and convenient.

Description

Display screen box and LED display screen

Technical Field

The invention relates to the technical field of LED display screens, in particular to a display screen box body and an LED display screen.

Background

In the industry of LED display screens, the flatness and the pixel pitch error of the splicing of display modules of the LED display screens have direct influence on the display effect, but the splicing flatness and the pixel pitch can only be ensured by the processing precision at present. In order to avoid the perception of bright lines and dark lines of the LED display screen by human eyes due to the difference of pixel pitches, the error between the pixel pitches needs to be controlled within 5%, and when the pixel pitch is smaller than 5%, human eyes cannot perceive the bright lines and the dark lines. When the pixel pitch between the display modules of the LED display screen is 0.7mm, the 5% error is 0.035mm, and the difference between the pixel pitches between the adjacent modules needs to be controlled to be 0.035 mm.

In addition, because the size of the LED on the display screen is smaller than the distance between the display screens, the display screen with the distance of 0.7mm can only use the LED with the distance of 0.5mm, the small LED is particularly easy to damage or fall off due to collision, and meanwhile, the display screen with the small distance is difficult to repair and maintain due to small space.

As the Chinese invention patent: CN202121616219.6, a LED display module assembly and display screen are provided with the fixed bolster on the display screen box, are provided with the sliding mounting groove on the display screen box, be provided with the movable support on the sliding mounting groove, the fixed female head that is provided with the power on the fixed bolster, the fixed public head that is provided with of power on the movable support, still fixed being provided with the apron on the box, rotationally be provided with the spring bolt on the apron, the free end of spring bolt is provided with the drive column, has seted up the driving groove on the movable support, and the one end of drive column stretches into be provided with adjusting part between display screen box and the display element in the driving groove, offer on the display screen box and be used for adjusting part's box adjusting through hole.

The scheme has a complex structure, is poor in convenience for connecting and disassembling the display screen box body, and is not beneficial to maintenance.

Disclosure of Invention

The invention provides a display screen box body and an LED display screen to solve the technical defects, the box body is simple in structure and convenient to connect, the LED display screen has a protection effect on LEDs, and meanwhile, the LED display screen is convenient to maintain.

The invention discloses a display screen box body which comprises a bottom wall and side walls, wherein the bottom wall and the side walls form an inwards concave cavity with a rectangular structure, connecting columns which are outwards protruded are arranged at two ends of the outer surface of each side wall, connecting holes are formed in the connecting columns, the connecting columns on the adjacent side walls are in staggered butt joint when the display screen box body is spliced, and the connecting columns on the adjacent side walls are fixedly connected through connecting pieces. Above-mentioned scheme, through the spliced pole setting at the lateral wall surface, can realize interconnect between the display screen box, and the joint gap between the adjacent display screen box can be controlled through the part of spliced pole protrusion and lateral wall moreover, of course, also can be in the local indent of lateral wall that is provided with spliced pole department to guarantee that the clearance after the concatenation is controllable in needs within range between the adjacent display screen box.

The end part of each side wall is provided with at least two connecting columns which are arranged at intervals, and the connecting holes arranged on the connecting columns are axially parallel. All set up two spliced poles at the tip of every lateral wall, so its stability is higher after the concatenation.

The connecting holes in the connecting columns are first connecting holes, second connecting holes are formed in the connecting pieces, the first connecting holes correspond to the second connecting holes one to one, annular bulges are arranged inside the first connecting holes and the second connecting holes, connecting threaded sleeves are arranged between the annular bulges inside the first connecting holes and the second connecting holes, bolts are arranged in the first connecting holes and the second connecting holes, and the bolts are respectively connected with two ends of the connecting threaded sleeves in a locking mode. According to the design of the structure, when two adjacent display screen boxes are connected through the connecting piece, bolts are arranged in the corresponding first connecting hole and the corresponding second connecting hole respectively, one bolt is located on the front side, and the other bolt is located on the back side. In the subsequent maintenance process, no matter front maintenance or rear maintenance, the separation between the adjacent display screen box bodies can be realized only by disassembling the bolts of the display screen box bodies.

The utility model provides a LED display screen, includes a plurality of display screen box, is fixed through the connecting piece between the adjacent display screen box, and the array has a plurality of display module assembly in every display screen box, and every display module assembly sets up in the display screen box through six at least adjusting device, and the adjusting device cooperation on every display module assembly is used for realizing that display module assembly is in the removal of XYZ direction and the rotation of XYZ direction.

Above-mentioned display screen box passes through the connecting piece fixed back, and the clearance between the display screen box is smaller, so in needs maintenance, maintenance process, can drive the display module assembly removal in the display screen box through adjusting device to expose the connecting piece between the display screen box, thereby dismantle the display screen box. Meanwhile, the display module in the display screen box body can adjust the pixel gap and the flatness between the adjacent display modules through the adjusting device so as to reach the specified error range. Meanwhile, the display module is adjusted through the adjusting device, so that the connection operation can be completed without disassembling the display module.

The adjusting devices have a telescopic function, and an acute angle is formed between the telescopic direction of each adjusting device and the plane on which the adjusting devices are mounted on the display module. Because the adjusting device only realizes the telescopic function, an acute angle needs to be formed between the installation angle of the adjusting device and the display module, and the display module can be adjusted by six degrees of freedom.

The structure of the adjusting device is as follows: the display module comprises a mounting seat, a motor and an adjusting screw sleeve, wherein the motor is arranged on the mounting seat, the adjusting screw sleeve is rotatably connected to the mounting seat, the motor is in transmission connection with the adjusting screw sleeve, an internal thread and an external thread are arranged on the adjusting screw sleeve, a screw rod and a nut are arranged on the adjusting screw sleeve, the screw rod is connected with the internal thread on the adjusting screw sleeve, the nut is connected with the external thread on the adjusting screw sleeve, the screw rod, the nut and the mounting seat are all in sliding connection along the axial direction of the adjusting screw sleeve, connecting balls are arranged at the end parts of the screw rod and the nut, one of the connecting balls is used for being in universal connection with the display module, and the other connecting ball is used for being in universal connection with a box body; one or more through grooves are radially formed in the end part of the screw rod, the nut and the adjusting screw sleeve which are matched with each other.

In the scheme, the adjusting threaded sleeve is rotatably connected to the mounting seat and is in transmission connection with the motor, and the motor drives the adjusting threaded sleeve to rotate. The interval that can realize on screw rod and the nut adjusting the swivel nut rotation in-process between the ball can change to the realization is to connecting the part that the ball is connected and is carrying out position control between display module and the box promptly. And a groove is arranged at one end of the screw rod and the nut matched with the adjusting screw sleeve and is arranged along the radial direction. The groove divides the end part of the screw rod or the end part of the nut into a plurality of parts, and a gap exists between the adjacent parts, so certain deformation capacity is realized between the adjacent parts, when the screw rod is matched with the internal thread of the adjusting screw sleeve, the part provided with the groove on the screw rod can be in a fine compression deformation state, so that the tensioning force is realized between the screw rod and the adjusting screw sleeve, when the nut is matched with the external thread of the adjusting screw sleeve, the part provided with the groove on the nut can be in a supported deformation state, and therefore the tensioning force is also realized between the nut and the adjusting screw sleeve. The tensioning force can eliminate the gaps between the nut and the adjusting threaded sleeve and between the screw rod and the adjusting threaded sleeve, and the driving position of the motor is only ensured, so that the position between the two connecting balls is controlled more accurately, and the precision can generally reach 0.01mm or even higher.

A driven gear is arranged at one end of the adjusting threaded sleeve, a driving gear is arranged on an output shaft of the motor, the driving gear and the driven gear are connected in a matched mode, a gland is arranged on the mounting seat, and the gland is used for limiting the axial position of the adjusting threaded sleeve on the mounting seat. The axial position of the adjusting threaded sleeve on the mounting seat is limited by the pressure plate, so that the stability of the axial position is ensured, and the adjusting precision is not influenced by slight axial displacement of the adjusting screw rod in the transmission process.

The screw rod is connected with the gland in a sliding mode, penetrates through the gland, is provided with a second bulge, is provided with a second sliding groove in the axial direction, and is connected with the second sliding groove in a matched mode; the screw rod end part which is not matched with the adjusting screw sleeve is provided with a second arc-shaped concave cavity, the connecting ball is arranged in the second arc-shaped concave cavity, the screw rod at the position of the second arc-shaped concave cavity is provided with a limiting nut, the limiting nut limits the connecting ball in the second arc-shaped concave cavity at the end part of the screw rod, the connecting ball is provided with a connecting part, the connecting part extends to the outside of the limiting nut, and the connecting part is connected with the display module. Because the gland thickness is less, so set up the second arch on the gland, set up the second spout on the screw rod, both are in relative motion in-process, and the second arch slides in the second spout, so only can realize axial displacement between the two. Set up second arc cavity at the screw rod tip, will connect the ball setting in second arc cavity, connecting portion are used for connecting the part that adjusting device adjusted, like display module assembly etc.. The connecting ball can rotate in the second arc-shaped cavity, so that the angle between the connecting part and the screw rod can be changed in the telescopic process of the adjusting device.

A first bulge is axially arranged on the outer surface of the nut, and a first sliding groove matched with the first bulge is arranged on the mounting seat; the end part of the nut which is not matched with the adjusting threaded sleeve is provided with a first arc-shaped concave cavity, the first arc-shaped concave cavity of the nut is provided with a cover plate, the connecting ball is arranged in the first arc-shaped concave cavity in the cover plate, the connecting ball is provided with a connecting shaft, the connecting shaft is provided with a connecting seat, and the connecting seat is fixed on the box body. The first bulge on the outer surface of the nut is matched with the first sliding groove in the mounting seat, so that the nut can be limited to rotate, and the nut can only move along the axial direction of the adjusting threaded sleeve. Realize fixing the box through the connecting seat, through the design of connecting the ball, can realize that the axial of nut, regulation swivel nut and the angle between the connecting seat can freely be adjusted at the accommodation process.

Still include the controller, be provided with signal transmitter and/or signal receiver on the concatenation edge on display module assembly, after the display module assembly concatenation is the screen, signal transmitter on one of them display module assembly corresponds with the signal receiver on the adjacent display module assembly, detect the distance between the two between signal transmitter and the signal receiver that correspond. The distance measurement and the high-low flatness measurement are carried out through the signal transmitter and the signal receiver between the adjacent display modules, and the measurement data are transmitted to the controller. Because there is the interval between signal transmitter, signal receiver and the display module assembly, so the controller subtracts the interval between signal transmitter, signal receiver and the display module assembly edge with measured data, obtains the interval between the adjacent display module assembly, in addition, the roughness also can be through measuring calculation. And the controller controls the adjusting device according to the pixel distance and the flatness obtained by calculation to adjust the display modules, and the signal emitter, the signal receiver, the controller and the adjusting device form closed-loop control, so that the pixel distance and the flatness between adjacent display modules are in a reasonable error range. The display module can realize autonomous measurement and adjustment in the assembling process, does not need to use other auxiliary equipment, and is high in adjustment precision.

The number of signal transmitters and signal receivers arranged at the splicing edge of each display module is more than 2, and the signal transmitters and/or the signal receivers on the same splicing edge of the display module are arranged at intervals. Because reality module body generally is the rectangle structure, utilize the concatenation edge at display module to set up two at least signal receiver and/or signal transmitter, can detect the interval of two positions between two adjacent concatenation edges that display module is relative promptly to can guarantee that the interval of optional position is the same between two edges of display module, can greatly promote the precision to interval measurement between the display module, it measures the roughness also is the same reason, also can promote the measurement accuracy of roughness.

The signal that the signal transmitter sent is the electromagnetic wave, signal receiver is used for converting the electromagnetic wave signal into the electric signal that can discern. The signal emitter may include an electromagnet and its array, or an optical (laser, visible light, ultraviolet light, etc.), acoustic, microwave, etc. signal emitting source device. The signal receiver is a Hall sensor (inductor, capacitor, impedance) or a magnetoelectric conversion device, a light (laser, visible light, ultraviolet light and the like) electric conversion device, an acoustic-electric conversion device and the like, and converts the signal of the emission source into an identifiable electric signal.

According to the display screen box body and the LED display screen, the splicing precision of the LED display screen can be improved, the machining precision requirements of the display screen box body and a display module can be reduced, the LED on the display module can be well protected, the display module can be connected without being detached, and the LED display screen box body and the LED display screen are simple and convenient to maintain.

Drawings

FIG. 1 is a structural isometric view of a display screen box body after splicing in embodiment 1 of the invention;

fig. 2 is a schematic structural diagram of an LED display screen according to embodiment 2 of the present invention;

FIG. 3 is a schematic cross-sectional view E-E of FIG. 2;

FIG. 4 is an enlarged view of a portion of FIG. 3 at B;

FIG. 5 is a schematic cross-sectional view F-F of FIG. 2;

FIG. 6 is an enlarged view of a portion of FIG. 5;

fig. 7 is a schematic structural diagram of a display module and an adjusting device in embodiment 2 of the present invention;

FIG. 8 is a schematic diagram of a display module adjustment principle according to the present invention;

FIG. 9 is a front view of the adjustment device of the present invention in an extended state;

FIG. 10 is a schematic cross-sectional view A-A of FIG. 9;

FIG. 11 is a side view of the adjustment device of the present invention in an extended state;

FIG. 12 is a schematic cross-sectional view B-B of FIG. 11;

FIG. 13 is a front view of an adjustment device in accordance with an embodiment of the present invention in a retracted state;

FIG. 14 is a schematic cross-sectional view C-C of FIG. 13;

FIG. 15 is a side view of the adjustment device of the present invention in a retracted state;

FIG. 16 is a schematic cross-sectional view D-D of FIG. 15;

FIG. 17 is an exploded view of the adjustment device of the present invention;

FIG. 18 is an isometric view of a display module assembly splice state of the present invention;

fig. 19 is a partially enlarged schematic view of fig. 18.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.

Example 1:

as shown in fig. 1-6, the present invention discloses a display screen box, which includes a bottom wall 25 and side walls 26, wherein the bottom wall 25 and the side walls 26 form a concave cavity with a rectangular structure, two ends of the outer surface of each side wall 26 are respectively provided with a connection column 27 protruding outwards, the connection columns 27 are provided with connection holes, when the display screen box 22 is spliced, the connection columns 27 on the adjacent side walls 26 are in staggered butt joint, and the connection columns 27 on the adjacent side walls 26 are fixedly connected through a connection member 28. Above-mentioned scheme, through the spliced pole 27 setting at lateral wall 26 surface, can realize interconnect between the display screen box 22, and the joint gap between the adjacent display screen box 22 can be controlled through spliced pole 27 protrusion and lateral wall 26's part, of course, also can be in the local indent of lateral wall 26 that is provided with spliced pole 27 department to guarantee that the clearance after the concatenation is controllable in needs within range between the adjacent display screen box 22.

The end of each side wall 26 is provided with at least two connecting columns 27 arranged at intervals, and the connecting holes arranged on the connecting columns 27 are axially parallel. Two connecting columns 27 are arranged at the end of each side wall 26, so that the stability is higher after splicing.

The connecting hole on the connecting column 27 is a first connecting hole 29, a second connecting hole 34 is arranged on the connecting piece 28, the first connecting hole 29 and the second connecting hole 34 are in one-to-one correspondence, an annular bulge 31 is arranged inside the first connecting hole 29 and the second connecting hole 34, a connecting swivel nut 30 is arranged between the annular bulge 31 inside the first connecting hole 29 and the second connecting hole 34, a bolt 32 is arranged in the first connecting hole 29 and the second connecting hole 34, and the bolt 32 is respectively in locking connection with two ends of the connecting swivel nut 30. According to the design of the structure, when two adjacent display screen boxes 22 are connected through the connecting piece 28, the bolts 32 are respectively arranged in the corresponding first connecting hole 29 and the corresponding second connecting hole 34, one bolt 32 is located on the front side, and the other bolt 32 is located on the back side. During subsequent maintenance, either front or rear maintenance, separation between adjacent display screen housings 22 can be achieved by simply removing the bolts 32.

Example 2:

as shown in fig. 2, the present invention discloses an LED display screen, which includes a plurality of display screen boxes 22, wherein adjacent display screen boxes 22 are fixed by a connecting member 28, a plurality of display modules 20 are arranged in each display screen box 22 in an array, each display module 20 is arranged in the display screen box 22 by at least six adjusting devices, and the adjusting devices on each display module 20 are used to realize the movement of the display module 20 in the XYZ direction and the rotation in the XYZ direction. In this embodiment, the number of the adjusting devices may be 6, but may also be more, such as 7, 8, etc.

After the display screen box 22 is fixed by the connecting piece 28, the gap between the display screen boxes 22 is smaller, so that the display module 20 in the display screen box 22 can be driven to move by the adjusting device in the process of maintenance and repair, and the connecting piece 28 between the display screen boxes 22 is exposed, so that the display screen boxes 22 are detached. Meanwhile, the display module 20 in the display screen box 22 can adjust the pixel gap and the flatness between the adjacent display modules 20 through the adjusting device so as to reach the specified error range. Meanwhile, the display module 20 can be adjusted by the adjusting device, so that the connection operation can be completed without disassembling the display module 20.

The adjusting devices 21 have a telescopic function, and an acute angle is formed between the telescopic direction of each adjusting device 21 and the plane on which the adjusting device 21 is installed on the display module 20. Since the adjustment device 21 only has a telescopic function, it is necessary to form an acute angle between the installation angle of the adjustment device 21 and the display module 20, and thus, it is possible to adjust the display module 20 with six degrees of freedom.

As shown in fig. 9 to 19, the adjusting device 21 has the following structure: the display module comprises a mounting seat 1, a motor 3 and an adjusting screw sleeve, wherein the motor 3 is arranged on the mounting seat 1, the adjusting screw sleeve 13 is rotatably connected on the mounting seat 1, the motor 3 is in transmission connection with the adjusting screw sleeve 13, an internal thread and an external thread are arranged on the adjusting screw sleeve 13, a screw rod 4 and a nut 5 are arranged on the adjusting screw sleeve 13, the screw rod 4 is correspondingly connected with the internal thread on the adjusting screw sleeve 13, the nut 5 is correspondingly connected with the external thread on the adjusting screw sleeve 13, the screw rod 4, the nut 5 and the mounting seat 1 are in sliding connection along the axial direction of the adjusting screw sleeve 13, connecting balls 8 are arranged at the end parts of the screw rod 4 and the nut 5, one of the connecting balls 8 is used for being in universal connection with the display module 20, and the other connecting ball 8 is used for being in universal connection with a box body; two through grooves 16 are radially formed in the end parts of the screw rod 4 and the nut 5, which are matched with the adjusting screw sleeve 13.

In the scheme, the adjusting screw sleeve 13 is rotatably connected to the mounting base 1 and is in transmission connection with the motor 3, and the motor 3 drives the adjusting screw sleeve to rotate. The distance between the screw rod 4 and the connecting ball 8 on the nut 5 can be changed in the rotating process of the adjusting screw sleeve 13, so that the position of a part connected with the connecting ball 8 can be adjusted. In the LED display screen, one of the connecting balls 8 is used for connecting the display module assembly 20, and the other connecting ball 8 is used for connecting the box body, so that the relative position of the display module assembly 20 relative to the box body is adjusted. A groove 16 is arranged at one end of the screw rod 4 and the nut 5 matched with the adjusting screw sleeve 13, and the groove 16 is arranged along the radial direction. The groove 16 divides the end of the screw rod 4 and the end of the nut 5 into a plurality of parts respectively, and gaps exist between the adjacent parts, so that the adjacent parts have certain deformation capacity, when the screw rod 4 is matched with the internal thread of the adjusting screw sleeve 13, the part, provided with the groove 16, of the screw rod 4 can be in a slightly compressed and deformed state, so that the part and the adjusting screw sleeve 13 have tension, and when the nut 5 is matched with the external thread of the adjusting screw sleeve 13, the part, provided with the groove 16, of the nut 5 can be in a stretched and deformed state, so that the nut 5 and the adjusting screw sleeve 13 also have tension. The tension can eliminate the gaps between the nut 5 and the adjusting threaded sleeve 13 and between the screw rod 4 and the adjusting threaded sleeve 13, and the transmission position of the motor 3 is unique, so that the position between the two connecting balls 8 is controlled more accurately, and the precision can generally reach 0.01mm or even higher.

The solution of the present embodiment uses a two-stage screw drive, when the motor 3 rotates the adjusting screw 13, the moving directions of the screw 4 and the nut 5 on the adjusting screw 13 are opposite. The two-stage screw drive can effectively reduce the volume of the whole electric telescopic adjusting device 21, adopts a screw design, has a good self-locking function, and can ensure that the holding position is not changed only by stopping power input at any position.

A driven gear 14 is arranged at one end of the adjusting threaded sleeve 13, a driving gear 15 is arranged on an output shaft of the motor 3, the driving gear 15 and the driven gear 14 are mutually matched and connected, a gland 2 is arranged on the mounting seat 1, and the gland 2 is used for limiting the axial position of the adjusting threaded sleeve 13 on the mounting seat 1. The axial position of the adjusting threaded sleeve 13 on the mounting base 1 is limited by the pressure plate, so that the stability of the axial position is ensured, and the adjusting precision is not influenced by slight axial displacement of the adjusting screw rod 4 in the transmission process.

The screw rod 4 with sliding connection between the gland 2, the screw rod 4 passes the gland 2, is provided with the second arch 11 on the gland 2 be provided with the second spout 10 along the axial on the screw rod 4, the second arch 11 is connected with the cooperation of second spout 10. Due to the small thickness of the gland 2, the second protrusion 11 is arranged on the gland 2, the second sliding groove 10 is arranged on the screw rod 4, and the second protrusion 11 slides in the second sliding groove 10 during the relative movement of the two, so that only axial displacement can be realized between the two. Of course, in the case where the screw 4 is provided, the connecting ball 8 is provided at the end of the screw 4.

The end part of the screw rod 4 which is not matched with the adjusting screw sleeve 13 is provided with a second arc-shaped cavity 19, the connecting ball 8 is arranged in the second arc-shaped cavity 19, the screw rod 4 at the position of the second arc-shaped cavity 19 is provided with a limiting nut 7, the limiting nut 7 limits the connecting ball 8 in the second arc-shaped cavity 19 at the end part of the screw rod 4, the connecting part 9 is arranged on the connecting ball 8, the connecting part 9 extends to the outside of the limiting nut 7, and the connecting part 9 is connected with the display module 20. A second arc-shaped cavity 19 is arranged at the end of the screw rod 4, the connecting ball 8 is arranged in the second arc-shaped cavity 19, and the connecting part 9 is used for connecting a part regulated by the regulating device 21, such as a display module 20. The connecting ball 8 is rotatable in the second arc-shaped cavity, so that the angle between the connecting part 9 and the screw rod 4 can be changed during the extension and retraction of the adjusting device 21.

The outer surface of the nut 5 is provided with a first protrusion 12 along the axial direction, and the mounting base 1 is provided with a first sliding groove 16 matched with the first protrusion 12. The first bulge 12 on the outer surface of the nut 5 is matched with the first sliding groove 16 on the mounting seat 1, so that the nut 5 can be limited from rotating, and only moves along the axial direction of the adjusting screw sleeve 13.

The end part of the nut 5 which is not matched with the adjusting threaded sleeve 13 is provided with a first arc-shaped concave cavity, the first arc-shaped concave cavity of the nut 5 is provided with a cover plate 18, the connecting ball 8 is arranged in the first arc-shaped concave cavity in the cover plate 18, the connecting ball 8 is provided with a connecting shaft 17, the connecting shaft 17 is provided with a connecting seat 6, and the connecting seat 6 is fixed on the box body. Realize fixing the box through connecting seat 6, through the design of connecting ball 8, can realize that the axial of nut 5, regulation swivel nut 13 and the angle between connecting seat 6 can freely be adjusted at the accommodation process.

The motor 3 may be a reduction motor, or a reducer may be integrated into the motor 3.

As shown in fig. 7 and 8, the display module further includes a controller, a signal emitter 23 and a signal receiver 24 are disposed on the splicing edge of the display module 20, after the display module 20 is spliced into a screen, the signal emitter 23 on one of the display modules 20 corresponds to the signal receiver 24 on the adjacent display module 20, the distance between the corresponding signal emitter 23 and the corresponding signal receiver 24 is detected, the distance measurement and the high-low flatness measurement are performed through the signal emitter 23 and the signal receiver 24 between the adjacent display modules 20, and the measurement data is transmitted to the controller. Because there is the interval between signal transmitter 23, signal receiver 24 and the display module assembly 20, so the controller subtracts the interval between signal transmitter 23, signal receiver 24 and the display module assembly 20 edge with the data of measuring, obtains the interval between the adjacent display module assembly, in addition, the roughness also can be calculated through measuring. The controller controls the adjusting device according to the pixel distance and the flatness obtained through calculation to adjust the display modules 20, and closed-loop control is formed among the signal emitter 23, the signal receiver 24, the controller and the adjusting device 21, so that the pixel distance and the flatness between the adjacent display modules 20 are in a reasonable error range. The display module can realize autonomous measurement and adjustment in the assembling process, does not need to use other auxiliary equipment, and is high in adjustment precision.

Each display module 20 is provided with a signal transmitter 23 and a signal receiver 24. Certainly can all set up signal transmitter 23 on a certain display module assembly 20 according to actual demand, set up signal receiver 24 on its adjacent display module assembly 20, only need realize setting up signal transmitter 23 and signal receiver 24 on the relative concatenation edge of adjacent display module assembly 20 can.

Each splicing edge of the display module 20 is provided with a signal emitter 23 and a signal receiver 24, the signal emitter 23 and the signal receiver 24 are respectively arranged at two ends of the splicing edge, and the signal receiver 24 and the signal emitter 23 alternate on the display module 20 along the clockwise or counterclockwise direction at intervals one by one.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be a mechanical connection; they may be directly connected or indirectly connected through intervening media, or may be in the interactive relationship of two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

Although the present invention has been described with reference to the preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but may be embodied or carried out in various forms without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a display screen box which characterized by: including diapire and lateral wall, diapire and lateral wall form the indent cavity of a rectangular structure, all are provided with outside bellied spliced pole at the both ends of every lateral wall surface, be provided with the connecting hole on the spliced pole, when the concatenation of display screen box, the crisscross butt joint of spliced pole on the adjacent lateral wall passes through connecting piece fixed connection between the spliced pole on the adjacent lateral wall.

2. The display screen box of claim 1, wherein: the end part of each side wall is provided with at least two connecting columns which are arranged at intervals, and the connecting holes arranged on the connecting columns are axially parallel.

3. A display screen cabinet according to claim 1 or 2, wherein: the connecting hole on the connecting column is a first connecting hole, a second connecting hole is formed in the connecting piece, the first connecting hole and the second connecting hole are in one-to-one correspondence, annular protrusions are arranged inside the first connecting hole and the second connecting hole, a connecting threaded sleeve is arranged between the annular protrusions inside the first connecting hole and the second connecting hole, a bolt is arranged in the first connecting hole and the second connecting hole, and the bolt is connected with two ends of the connecting threaded sleeve in a locking mode respectively.

4. An LED display screen adopting the display screen box body as claimed in claim 3, which is characterized in that: including a plurality of display screen box, it is fixed through the connecting piece between the adjacent display screen box, the array has a plurality of display module assemblies in every display screen box, and every display module assembly sets up in the display screen box through six adjusting device at least, and the adjusting device cooperation on every display module assembly is used for realizing that display module assembly is in the removal of XYZ orientation and the rotation of XYZ orientation.

5. The LED display screen of claim 4, wherein: the adjusting devices have a telescopic function, and an acute angle is formed between the telescopic direction of each adjusting device and the plane on which the adjusting devices are arranged on the display module.

6. An LED display screen according to claim 4 or 5, wherein: the structure of the adjusting device is as follows: the display module comprises a mounting seat, a motor and an adjusting screw sleeve, wherein the motor is arranged on the mounting seat, the adjusting screw sleeve is rotatably connected to the mounting seat, the motor is in transmission connection with the adjusting screw sleeve, an internal thread and an external thread are arranged on the adjusting screw sleeve, a screw rod and a nut are arranged on the adjusting screw sleeve, the screw rod is connected with the internal thread on the adjusting screw sleeve, the nut is connected with the external thread on the adjusting screw sleeve, the screw rod, the nut and the mounting seat are all in sliding connection along the axial direction of the adjusting screw sleeve, connecting balls are arranged at the end parts of the screw rod and the nut, one of the connecting balls is used for being in universal connection with the display module, and the other connecting ball is used for being in universal connection with a box body; one or more through grooves are radially formed in the end part of the screw rod, the nut and the adjusting screw sleeve which are matched with each other.

7. The LED display screen of claim 6, wherein: the structure of the adjusting device is as follows: a driven gear is arranged at one end of the adjusting threaded sleeve, a driving gear is arranged on an output shaft of the motor, the driving gear and the driven gear are connected in a matched mode, a gland is arranged on the mounting seat, and the gland is used for limiting the axial position of the adjusting threaded sleeve on the mounting seat.

8. The LED display screen of claim 7, wherein: the screw rod is connected with the gland in a sliding mode, penetrates through the gland, is provided with a second bulge, is provided with a second sliding groove in the axial direction, and is connected with the second sliding groove in a matched mode; a second arc-shaped concave cavity is formed in the end part of the screw rod which is not matched with the adjusting screw sleeve, the connecting ball is arranged in the second arc-shaped concave cavity, a limiting nut is arranged on the screw rod at the second arc-shaped concave cavity, the limiting nut limits the connecting ball in the second arc-shaped concave cavity at the end part of the screw rod, a connecting part is arranged on the connecting ball, the connecting part extends to the outside of the limiting nut, and the connecting part is connected with the display module; a first bulge is axially arranged on the outer surface of the nut, and a first sliding groove matched with the first bulge is arranged on the mounting seat; the end part of the nut which is not matched with the adjusting threaded sleeve is provided with a first arc-shaped concave cavity, the first arc-shaped concave cavity of the nut is provided with a cover plate, the connecting ball is arranged in the first arc-shaped concave cavity in the cover plate, the connecting ball is provided with a connecting shaft, the connecting shaft is provided with a connecting seat, and the connecting seat is fixed on the box body.

9. An LED display screen according to claim 4 or 5, wherein: still include the controller, be provided with signal transmitter and/or signal receiver on the concatenation edge on display module assembly, after the display module assembly concatenation is the screen, signal transmitter on one of them display module assembly corresponds with the signal receiver on the adjacent display module assembly, detect the distance between the two between signal transmitter and the signal receiver that correspond.

10. The LED display screen of claim 9, wherein: the number of signal transmitters and signal receivers arranged at the splicing edge of each display module is more than 2, and the signal transmitters and/or the signal receivers on the same splicing edge of the display module are arranged at intervals.