Rapidly-spliced foldable display screen and display screen all-in-one machine

Abstract

The invention discloses a rapidly-spliced foldable display screen and a display screen all-in-one machine, and belongs to the technical field of LED display screens. The number of the display screen units is two, the display screen units are arranged in the vertical direction, and the two display screen units are arranged in a hinged mode through a hinge folding mechanism; the bolt assembly is arranged between the two display screen units and is used for reinforcing and connecting the two display screen units when the two display screen units are unfolded to be in a plane state; according to the rapidly-spliced foldable display screen and the display screen all-in-one machine, the stability, strength, precision and flatness of the whole display screen before and after folding are guaranteed through the cross beams, the stand columns, the cross rods, the positioning aluminum blocks and the plug pins, and meanwhile the multiple adjacent display screens can be connected through the deflection locks and the positioning aluminum blocks; the display screen all-in-one machine is formed to enlarge the application range of the display screen.

Description

Technical Field

[0001] The invention belongs to the technical field of LED display screens, and in particular relates to a fast-jointed foldable display screen and an all-in-one display screen machine. Background Art

[0002] LED display screens are generally used in large-size display scenes. They are large in size and not conducive to installation, disassembly, packaging and transportation. By folding the LED display screen, its height can be effectively reduced, packaged and transported. Reducing the space occupied can achieve convenient transportation and installation, which is suitable for commercial advertising, performance stage rental, exhibitions, conferences and other scenes.

[0003] At present, the commonly used size of LED display cabinet is 600mm×337.5mm, which is a standard 16:9 ratio. The material is usually die-cast aluminum. Compared with sheet metal materials, die-cast aluminum cabinets have the advantages of light weight, high flatness, high precision, and seamless splicing. However, there is stress inside the die-cast material. When die-cast aluminum is used to make a large cabinet with a size exceeding 600mm×337.5mm, the cost is high, and it will cause deformation and warping when the stress is released.

[0004] Generally speaking, the folding of LED display screens is achieved through hinge folding. The hinge structure enables the two connected parts to be folded or unfolded around an axis, which is consistent with the hinge folding of doors and windows. In existing foldable display screens, since the upper part of the display screen needs to be suspended in the air, the middle folding part will bear a large load, and may break in severe cases. In addition, due to the gravity of the LED display screen itself, the display screen is prone to deformation during the folding process. During the manufacturing and placement of the LED display screen, problems such as poor flatness caused by mechanical stress and non-coplanarity caused by chassis mechanical fatigue are prone to occur between display modules. Summary of the invention

[0005] The first purpose of the present invention is to provide a fast-joined foldable display screen, and propose a low-cost, light-weight, high-strength, high-precision cabinet unit frame architecture. The display module can be installed on the cabinet frame with extremely high precision and flatness, and no obvious deformation occurs during the folding and unfolding process, so that the flatness of the module is not affected by folding, and it supports repeated folding, which is convenient for the use and transportation of the screen;

[0006] The second purpose of the present invention is to provide a fast-joined foldable display all-in-one machine, which connects multiple foldable display screens in the horizontal direction through eccentric locks to form a larger foldable display all-in-one machine to meet the needs for foldable display screens in more situations.

[0007] The object of the present invention is achieved by providing a fast-joined foldable display screen, comprising:

[0008] Install the chassis;

[0009] A display screen unit, wherein two display screen units are arranged in a vertical direction, and the two display screen units are hingedly connected by a hinge folding mechanism; and

[0010] A latch assembly, the latch assembly being arranged between the two display screen units and used for reinforcing the connection between the two display screen units when they are unfolded into a planar state;

[0011] The latch components are arranged on both sides of the hinged arrangement of the two display screen units.

[0012] Furthermore, eccentric wheels are arranged at four corners of the bottom of the mounting chassis.

[0013] Furthermore, the display screen unit includes a frame, a display panel arranged on one side of the frame, and a back cover arranged on the other side of the frame;

[0014] The frame includes cross beams respectively arranged at the upper and lower ends, and a plurality of columns vertically fixedly connected to the cross beams. The plurality of columns are evenly arranged between two cross beams. A plurality of cross bars are transversely arranged between the plurality of columns. The plurality of cross bars are arranged in sequence in the length direction of the columns.

[0015] Furthermore, the display panel includes a plurality of LED display screen modules, and the plurality of LED display screen modules are fixed on the frame to form a display screen unit.

[0016] Furthermore, the hinge folding mechanism includes two hinge linings, the two hinge linings are hingedly arranged through a hinge rod, and the two hinge linings are respectively fixedly connected to adjacent columns in two display screen units.

[0017] Furthermore, the latch assembly includes two positioning aluminum blocks and a latch, the two positioning aluminum blocks are respectively fixedly arranged on two adjacent columns in the display screen unit, and the latch can penetrate the two positioning aluminum blocks and be fixedly arranged on the two positioning aluminum blocks.

[0018] Furthermore, the positioning aluminum block is provided with a pin hole for the pin to pass through and a limiting hole for the installation of a limiting screw. The pin hole is vertically arranged to the limiting hole, and the limiting screw is arranged on the limiting hole. The positioning aluminum block is provided with holes connected to the column and the beam and a limiting hole for installing the other end of the limiting screw.

[0019] Furthermore, the latch hole is provided with a bevel guide groove on the outer end surface of the positioning aluminum block, and the aperture of the latch hole of the positioning aluminum block in the upper display screen unit is larger than the aperture of the latch hole of the positioning aluminum block in the lower display screen unit.

[0020] Furthermore, the display screen unit is provided with an image acquisition module, which is fixedly arranged on the crossbeam; the LED display screen module is provided with a receiving card, a power supply and a system mainboard; the image acquisition module, the receiving card, the power supply and the system mainboard are electrically connected.

[0021] A fast-joined foldable display screen all-in-one machine, wherein a plurality of display screens are arranged in a transverse direction, and the plurality of display screens are connected by fixing an eccentric lock and adjacent positioning aluminum blocks.

[0022] The beneficial effects of the present invention are embodied in:

[0023] In the present invention, by setting two display screen units that can be folded in the vertical direction on the installation chassis, the height of the LED display screen can be effectively reduced, packaged and transported by folding the LED display screen. The space occupation is reduced, and convenient transportation and installation can be achieved, which is suitable for scenes such as commercial advertising, performance stage rental, and exhibitions; and the two display screen units are relatively hingedly set through a hinge folding mechanism; at the same time, by setting a latch assembly between the two display screen units, the upper and lower display screen units of the display screen are separated by the latch to unlock and fold, thereby improving the structural strength of the LED display screen in the display screen unit in the upright state; the common splicing accuracy and strength problems of the sheet metal box are solved by the columns, beams, crossbars and positioning aluminum blocks; multiple display screens are horizontally spliced ​​through eccentric locks and adjacent positioning aluminum blocks to form an integrated display screen machine, which is used in scenes such as conferences, movie entertainment, and performance stages. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0025] Figure 1 This is a schematic diagram of the structure of the display screen of the present invention when it is unfolded;

[0026] Figure 2 This is a schematic diagram of the structure of the display screen of the present invention when it is folded;

[0027] Figure 3 This is a schematic diagram of the explosion structure of the display screen of the present invention;

[0028] Figure 4 This is a box structure diagram of the display screen unit of the present invention;

[0029] Figure 5This is a schematic diagram of the structure of the display screen unit of the present invention;

[0030] Figure 6 This is a schematic diagram of the assembly of the display screen module of the present invention;

[0031] Figure 7 This is a schematic diagram of the horizontal structure of the display screen unit of the present invention;

[0032] Figure 8 This is a schematic diagram of the crossbar connection structure of the present invention;

[0033] Fig. 9 This is a detailed view of two display screen units of the present invention unfolded in the vertical direction;

[0034] Fig.10 This is a detailed diagram of two display screen units of the present invention being folded in the vertical direction;

[0035] Fig.11 This is a schematic diagram of the connection between the upper and lower positioning aluminum blocks of the present invention;

[0036] Fig.12 It is a schematic diagram of the local structure of the bevel guide groove of the present invention;

[0037] Fig.13 This is a schematic diagram of the structure of the latch assembly of the present invention;

[0038] Fig.14 It is a partial schematic diagram of the connection between two uprights of the present invention;

[0039] Fig.15 This is a schematic diagram of the positioning aluminum block structure of the present invention;

[0040] Fig.16 It is a schematic diagram of the skeleton structure of the present invention;

[0041] Fig.17 This is a schematic diagram of the structure of the display screen of the present invention without the back cover;

[0042] Fig.18 It is a schematic diagram of the structure of the back side of the display screen when the display screen is unfolded in an embodiment of the present invention;

[0043] Fig.19 This is a schematic diagram of the inner concave portion of the display screen module of the present invention;

[0044] Fig. 20 This is a schematic diagram of the external projection of the display screen module of the present invention;

[0045] Fig.21 This is a schematic diagram of the twisting of the display screen module of the present invention;

[0046] Fig. 22 A schematic diagram of the positions of a plurality of display screen units in the horizontal direction on a reference plane according to the present invention;

[0047] Fig.23 A schematic diagram of a plurality of display screen units of the present invention determining a reference surface by positioning an aluminum block;

[0048] Fig.24 It is a plan view schematically showing two display screen units connected in the horizontal direction according to the present invention;

[0049] Fig.25 It is a schematic diagram of the connection of two positioning aluminum blocks in the lateral direction of the present invention;

[0050] Fig.26 It is a structural schematic diagram of the display screen integrated machine of the present invention in a folded state;

[0051] Fig. 27 It is a structural schematic diagram of the integrated display screen machine of the present invention in an unfolded state;

[0052] Fig.28 A is a schematic diagram of the structure of the module of the present invention after being folded and placed in an aviation box;

[0053] Fig.29 FIG. b is a structural schematic diagram of the module of the present invention after being folded and placed in an aviation box. FIG.

[0054] In the accompanying drawings, 1-installation chassis, 2-display unit, 3-hinge folding mechanism, 4-latch assembly, 5-eccentric wheel, 6-skeleton, 7-display panel, 8-back cover, 9-crossbeam, 10-column, 11-LED display module, 12-eccentric lock, 13-hinge lining, 14-hinge rod, 15-positioning aluminum block, 16-latch, 17-latch hole, 18-limiting screw, 19-threaded limiting hole, 20-bevel guide groove, 21-image acquisition module, 22-receiving card, 23-power supply, 24-system mainboard, 25-cross bar, 26-hole position, 27-limiting hole, 28-eccentric lock, 29-horizontal gap, 30-longitudinal gap, 31-folding display, 32-reference surface, 33-cross bar mounting seat, 34-handle, 35-air box. DETAILED DESCRIPTION

[0055] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0056] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0057] Reference Figure 1-Figure 29 , a fast splicing foldable display screen, comprising:

[0058] Install chassis 1;

[0059] A display screen unit 2, wherein two display screen units 2 are arranged in the vertical direction, and the two display screen units 2 are hingedly connected by a hinge folding mechanism 3; and

[0060] The latch assembly 4 is arranged between the two display screen units 2 and is used for reinforcing the connection between the two display screen units 2 when they are unfolded into a flat state; the latch assembly 4 is arranged on both sides of the hinged arrangement of the two display screen units 2.

[0061] By setting two display screen units 2 that can be folded and installed in the vertical direction on the installation chassis 1, and by setting a folding LED display screen, its height can be effectively reduced, packaged and transported. Reducing space occupation can achieve convenient transportation and installation, which is suitable for commercial advertising, performance stage rental, exhibitions, conferences and other scenes; and the two display screen units 2 are relatively hingedly set through the hinge folding mechanism 3; at the same time, by setting a latch assembly 4 between the two display screen units 2, the upper and lower display screen units 2 of the display screen are separated by the latch 16 to unlock and fold, thereby improving the structural strength of the LED display screen in the display screen unit 2 in the upright state.

[0062] It should be emphasized that the display screen unit 2 forms a box structure through the assembly of the frame 6 and the LED display screen module 11 .

[0063] The bottom of the mounting chassis 1 is provided with eccentric wheels 5 at the four corners. As a preferred method of this embodiment, in order to ensure the coplanarity of the chassis, a Foma wheel with adjustable and fixed height is used. The horizontal position of the LED display screen is adjusted by adjusting the height of the wheel to achieve precise placement. Since the LED display screen needs to be fixed on the mounting chassis for easy movement, a T-shaped plate with a relatively stable structure is provided to increase the support strength, realize direct right-angle support without diagonal bracing, and improve the strength of the mounting chassis to support the LED display screen.

[0064] Preferably, the display screen unit 2 comprises a frame 6, a display panel 7 arranged on one side of the frame 6, and a back cover 8 arranged on the other side of the frame 6;

[0065] The frame 6 includes cross beams 9 respectively arranged at the upper and lower ends, and a plurality of columns 10 vertically fixedly connected to the cross beams 9 . The plurality of columns 10 are evenly distributed between two cross beams 9 .

[0066] Specifically, this solution proposes a sheet metal structure for an LED display screen, which constructs a main frame through beams, columns, and cross bars, combined with high-precision, high-strength positioning aluminum blocks formed by 3D printing or CNC processing. Based on the cooperation of the two, a large-size, high-precision, high-strength, light-weight, high-flatness, and low-cost LED sheet metal display unit is achieved.

[0067] If the cabinet is processed by die-casting aluminum technology, in order to ensure that the display module used for splicing the screen body achieves good consistency and flatness, the die-cast cabinet is required to have high structural strength and small material deformation, resulting in high costs. There is stress inside the die-cast material. When die-casting materials are used to make large cabinets with a size exceeding 600mm×337.5mm, the cost is high, and deformation and warping will occur when the stress is released. Although the display screen made by sheet metal technology can be low-cost, the LED display screen spliced ​​by the sheet metal cabinet has problems such as poor flatness, poor precision, and low structural strength. This solution solves the problems of poor splicing flatness, low structural strength and poor precision of the sheet metal cabinet through beams, columns, crossbars, and positioning aluminum blocks.

[0068] By setting two display screen units that can be folded in the vertical direction on the installation chassis, the height of the LED display screen can be effectively reduced, packaged and transported by folding. Reducing space occupation can achieve convenient transportation and installation, which is suitable for commercial advertising, performance stage rental, exhibition and other scenes; and the two display screen units are relatively hinged through the hinge folding mechanism. At the same time, by setting a latch assembly between the two display screen units, the upper and lower display screen units are separated by the latch to unlock and fold, thereby improving the structural strength of the LED display screen in the display screen unit in the upright state.

[0069] This patent adopts the structure of columns 10, beams 9 and crossbars 25 to ensure the strength and accuracy of the structure, and adopts positioning aluminum blocks 15 and latches 16 to ensure the structural stability of the upper and lower parts of the LED display. Among them, the crossbars 25 are respectively set at two in the upper and lower parts of the entire LED display. The crossbars 25 can be regarded as the horizontal optical axis. The crossbars 25 use horizontal solid optical rods to achieve accuracy and positioning, anti-torsion, and the columns 10 and crossbars 9 are used for longitudinal positioning to ensure the flatness and accuracy of the LED module splicing. Since the display screen is subjected to greater force in the longitudinal direction, 8 columns 10 with wider widths are set in the longitudinal direction. The lateral force is supported by the crossbars 25 and crossbars 9 to ensure the structural strength, stability and splicing flatness of the entire screen.

[0070] For example, a chrome-plated optical axis can be used for the crossbar 25; based on this, if a chrome-plated optical axis passes through the two positioning blocks, a good lateral constraint can be achieved for the two positioning blocks to ensure that they are on the same reference plane. In the specific operation process, when the two display screen units 2 are unfolded or folded, the horizontal crossbar 25 can be lifted to separate the upper and lower aluminum blocks.

[0071] As a preferred embodiment of this embodiment, the mounting chassis 1 may be configured as two separate bottom plates.

[0072] As a preferred mode of this embodiment, more than two latch assemblies 4 are arranged between the two display screen units 2, and the more than two latch assemblies 4 are evenly distributed between the two display screen units 2, thereby improving the stability of the connection between the two display screen units 2.

[0073] As a preferred mode of this embodiment, two latch assemblies 4 are provided, and the two latch assemblies 4 are arranged at the positions where the two display screen units 2 are connected.

[0074] Preferably, the display panel 7 includes a plurality of LED display screen modules 11 , and the plurality of LED display screen modules 11 are fixed on the frame 6 to form one display screen unit 2 .

[0075] As a preferred mode of this embodiment, the display screen unit 2 is composed of multiple 320mm×160mm LED display screen modules 11, and 18 LED display screen modules 11 can constitute a 960mm×960mm display screen unit 2, and each LED display screen module 11 is fixed to the sheet metal box by a limit screw. A single LED module is composed of an LED light board, a plastic bottom shell, a lamp bead surface encapsulation glue formed by a GOB (glue on the board) process, and screws, wherein the LED light board is composed of red, green, and blue LED lamp beads, a driver chip, and a PCBA board, and the LED light board is connected to the plastic bottom shell by screws. A plurality of screw holes are provided on the rear shell of a single LED module.

[0076] Reference Figure 5 and Figure 19-21If the display screen modules 11 or display screen units 2 are arranged in a vertical and horizontal array, there will be horizontal and vertical gaps between the display screen modules or display screen units. A single display screen module 11 is a square structure with a size of 320×160mm. The step difference in the vertical gap is because the deformation of the display screen module 11 has been magnified by the size of 320mm, and the step difference in the horizontal gap is because the deformation of the display screen module 11 has been magnified by the size of 160mm. Assuming that the two size deviations are caused by the same reason, the step difference of the vertical gap is significantly higher than the horizontal gap, so the vertical joint is more likely to appear than the horizontal joint.

[0077] Therefore, poor splicing gaps often appear first from the length direction. There are three main types of deformation of the module, namely, concave, convex and torsion, with different degrees. The torsion problem can be solved by the cooperation of positioning columns and positioning holes. There will be several positioning columns distributed on each LED display module 11, and then corresponding positioning holes will be opened on the sheet metal box. These positioning holes are distributed on the above-mentioned columns and beams 9, so the torsion problem of the LED display module 11 can be well solved.

[0078] The inner concave problem is often caused by overtightening the screws fixing the LED display module 11, which can also be solved by adjusting the tightness of the screws. The outer convex problem can also be solved by adjusting the tightness of the fixing screws.

[0079] When the modules are fixed on the box, the ideal style is to regard the rear surfaces of all modules as ideal planes, and tighten each module at the correct position on a unified reference plane, so that high flatness and high consistency can be achieved. The gap at the splicing position of each module is a step difference point. Multiple LED display screen modules 11 constitute a display unit 2. Two display units 2 are fixed on a high-strength positioning aluminum block 15. It is only necessary to ensure that the multiple positioning aluminum blocks can be on the same horizontal plane to ensure that these modules are on the same horizontal plane, and the step difference at the splicing position can be well avoided.

[0080] Preferably, the hinge folding mechanism 3 includes two hinge linings 13 , the two hinge linings 13 are hingedly arranged through a hinge rod 14 , and the two hinge linings 13 are fixedly connected to adjacent columns and beams in two display screen units 2 , respectively.

[0081] The two display screen units 2 provided in the present application are connected via a hinge folding mechanism 3, so that the entire LED display screen can be folded and unfolded 180° between the upper half and the lower half.

[0082] Optionally, in order to achieve a certain stability during the folding process, the two hinge linings 13 are connected by the hinge rod 14 so that the connection position has a certain friction force, which can also ensure that the folding strength of the LED display screen is sufficient and will not be deformed during the folding process.

[0083] Preferably, the latch assembly 4 includes two positioning aluminum blocks 15 and a latch 16, the two positioning aluminum blocks 15 are respectively fixed on two adjacent columns in the display screen unit 2, and the latch 16 can be inserted into the two positioning aluminum blocks 15 and fixed on the two positioning aluminum blocks 15.

[0084] Reference Fig. 9 and Fig.10 Due to the need for the folding function of the display screen, two display screen units 2 are set, and the two display screen units 2 are folded in the vertical direction. In order to improve the overall stability when the two display screen units 2 are stretched into a flat state during folding and use, a latch assembly 4 is installed on the adjacent columns of the display screen unit 2. A positioning aluminum block 15 fixed in the column is set in the latch assembly 4. The positioning aluminum block 15 is processed by CNC and has multiple holes processed by laser cutting.

[0085] Preferably, the positioning aluminum block 15 is provided with a pin hole 17 for the pin 16 to pass through and a threaded limit hole 19 for installing a limit screw 18. The pin hole 17 is vertically arranged to the threaded limit hole 19, and the threaded limit hole 19 is provided with the limit screw 18. The positioning aluminum block 15 is provided with a hole position 26 connected to the column and the beam and a limit hole 27 for installing the other end of the limit screw 18.

[0086] The positioning aluminum block 15 has corresponding holes to realize its own installation and installation of corresponding bolts or screws; specifically, three holes 26 are provided on the front and back of the positioning aluminum block 15 for connecting the column and the beam at the same time.

[0087] Optionally, two of them are blind holes and one is a through hole. Blind holes are provided on both sides of the side of the positioning aluminum block 15 for further fixing with the column 10 in the horizontal direction. A latch hole 17 with a larger aperture and a threaded limit hole 19 are provided in the middle of the aluminum block for fixing and limiting the latch 16. When the limit screw 18 is loosened, the latch 16 can be pulled out to achieve the overall folding of the display screen. When the latch 16 is inserted, the limit screw 18 is tightened to achieve the upright placement of the display screen. The hole 26 can be a blind hole for connecting the column 10 and the beam 9 at the same time to achieve positioning. The through hole is used to lock and clamp the column 10. The splicing strength of the display screen is guaranteed by the positioning aluminum block 15.

[0088] Furthermore, the positioning aluminum block 15 has three functions. First, it connects the column 10 and the crossbeam 9 through multiple threaded limiting holes 19 to ensure the accuracy and flatness of their positions. Second, it provides a latch hole 17, through which the upper and lower screen parts are unlocked and fixed by the up and down movement of the pin, to ensure the accuracy of the position of the display box during the folding process. Third, a limiting hole is set on the side for the horizontal splicing of the display screen to form an integrated display screen. Optionally, a handle 34 can be set on the latch 16 to facilitate the operation of the latch 16.

[0089] Preferably, the latch hole 17 is located on the outer end surface of the positioning aluminum block 15 and is provided with a bevel guide groove 20, and the aperture of the latch hole of the positioning aluminum block in the upper display screen unit is larger than the aperture of the latch hole of the positioning aluminum block in the lower display screen unit; in order to facilitate the pin to better shuttle in the up and down directions, a structure with a larger top and a smaller bottom is set so that the pin will not cause obvious structural obstruction when it does not move to the appropriate position.

[0090] In practical applications, the main problem with this solution is that it is often difficult for the pin 16 to pass through the upper positioning aluminum block 15 and insert into the lower positioning aluminum block 15. This is because there is a certain assembly deviation between the upper and lower boxes, which causes the holes of the upper and lower positioning blocks to be misaligned. Based on this, a deeper chamfer feature is opened on the positioning aluminum block 15 to achieve the function of guiding the pin 16 to be inserted into the positioning aluminum block 15 more smoothly.

[0091] The apertures of the upper and lower positioning aluminum blocks 15 in the middle are different. The aperture of the upper positioning aluminum block is smaller than that of the lower positioning aluminum block. After locking, the apertures are reduced to the same size, so that the deviation of the box can be corrected by tightening the screws. A beveled guide groove 20 is made in the aluminum block pin hole 17 to guide the pin 16 to be better inserted into the aluminum block.

[0092] In order to ensure the strength of the foldable display screen, two latches 16 are provided on the back of the display screen. The latches 16 are inserted into the pre-processed mounting holes on the back plate to connect the upper and lower parts of the LED display screen. The latches 16 can effectively transmit force and bear loads, thereby enhancing the structural strength of the LED display screen in an upright state. When the LED display screen is folded, the latches 16 need to be lifted from the notch of the back plate, that is, the lower half is separated from the upper half, thereby realizing the unlocking and folding function.

[0093] As a preferred method of this embodiment, based on the eight columns, four beams, four crossbars and positioning aluminum block structure in this patent, a conventional 320mm×160mm conventional LED module with a bottom shell is used to splice a large-size sheet metal box, the flatness is not lower than that of a die-cast box, the step difference can be <0.1mm, and the cost is lower. The hinge folding structure, latch structure and positioning aluminum block can achieve 180° folding of the LED display screen, which is convenient for storage and transportation. The foldable LED display screen based on the sheet metal structure in this patent has cost advantages, low mold opening, processing, and material costs, simple process, and can be quickly iterated.

[0094] As a preferred embodiment of this embodiment, the size of a single LED display screen module is 320 mm×160 mm, and the size of a single box is 960 mm×640 mm.

[0095] As a preferred embodiment of this embodiment, the size of a single LED display screen module is 160 mm×160 mm, and the size of a single box is 480 mm×480 mm.

[0096] Preferably, the display screen unit 2 is provided with an image acquisition module 21, and the image acquisition module 21 is fixedly arranged on the crossbeam 9. The LED display screen module 11 is provided with a receiving card 22, a power supply 23 and a system mainboard 24, and the image acquisition module 21, the receiving card 22, the power supply 23 and the system mainboard 24 are electrically connected.

[0097] The receiving card, power supply and system mainboard are fixed to the LED module by screws, and are electrically connected to the LED module by cables. The receiving card is used to receive video and image signals, and the system mainboard is a multimedia player. Each LED module is fixed to the column by screws and module connectors. After multiple LED modules are fixed in position, a spliced ​​display panel is formed. The mounting chassis is connected to the bottom crossbeam by screws and reinforced by a T-shaped plate. Four eccentric wheels are set under the mounting chassis for the movement of the LED display. The image acquisition module is fixed to the crossbeam above the display by screws, and is used for image acquisition, video monitoring, face recognition and other functions.

[0098] Among them, the two products are made into a foldable and spliced ​​structure to form a foldable display screen 31, which can be easily placed in an air box 35 for logistics turnover. After the screen body is folded, its outer dimensions are less than 1 meter high and relatively thin. It is designed separately from the chassis, and the foldable box part can be disassembled and packed for transportation. The modules of the foldable screen body are easy to bump, so the use of an air box for turnover logistics can better protect the screen from bumps, and can also be quickly deployed in any scene.

[0099] A quick-jointed foldable display screen all-in-one, wherein the display screen is arranged with a plurality of display screens in the horizontal direction. It should be emphasized that the display screen referred to here is a display screen formed by joining two upper and lower display screen units 2, and the plurality of display screens are connected in the horizontal direction by fixing between eccentric locks and adjacent positioning aluminum blocks 15; in order to realize the extended connection between two foldable display screens, a plurality of such display screens can be arranged to be joined in the horizontal direction, thereby forming an all-in-one display screen with a larger display area, and in order to realize the fixed connection between the plurality of the display screens, the splicing between two adjacent display screens can be fixed by setting an eccentric lock 28; at the same time, the protruding part of the limit screw 18 arranged between the adjacent positioning aluminum blocks 15 between the two display screens is used as a positioning column, and the positioning column is connected to the limit hole 27 arranged on another positioning aluminum block 15 that needs to be relatively connected, so as to realize the positioning, matching and fixed installation between the two adjacent positioning aluminum blocks 15.

[0100] The horizontal limit screws 18 between the positioning aluminum blocks 15 serve as positioning columns, and the hole-shaft matching clearance can be reserved relatively large, so that during the splicing process, a large size deviation can be tolerated, thereby achieving simple and fast splicing without the need for too tight position matching. When the zipper is tightened, the screen can be further calibrated.

[0101] It should be emphasized that, on the same latch assembly 4, after a threaded limit hole 19 on one of the positioning aluminum blocks 15 is threadedly connected by a limit screw 18, the latch 16 passing through the two positioning aluminum blocks is locked and fixed; at this time, when the two horizontal display screens are installed relative to each other, the protruding part of the limit screw is aligned with the countersunk hole on the positioning aluminum block 15 on the other display screen for installation; therefore, it can be understood that the limit screws on the two display screens are staggered, which not only realizes the fixation of the latch on the positioning aluminum block itself, but also realizes the alignment and clamping installation with the countersunk hole on the positioning aluminum block on the other display screen.

[0102] It can be understood that the display panel 7 is configured to be spliced ​​with multiple LED display screen modules 11, and multiple full-color LED display screen modules 11 emit light to form a display screen. In order to improve the stability between the interconnected LED display screen modules 11, especially the connection and tightening between two lateral LED display screen modules, an eccentric lock 28 is used for connection. The eccentric mechanism can be used to achieve a self-locking function without the need for additional external force. At the same time, a pulling force can be applied in the horizontal direction to achieve lateral tightening. The self-locking and lateral tightening characteristics of the eccentric lock can improve the stability and safety of the connection between the LED display screen modules that need to be connected in the two display screens.

[0103] It should be explained that the eccentric lock 28 is a locking structure commonly used in the prior art, and its principle is based on the design of the eccentric member, so that during the clamping process, the workpiece is firmly fixed in a predetermined position. This mechanism is usually driven by pneumatic or hydraulic means, and the force-increasing and locking effects of the inclined wedge are used to achieve the clamping of the workpiece. In the technical solution of the present application, in order to achieve the installation of multiple display screen units in the horizontal direction, the eccentric lock 28 is set to connect and reinforce the two closely spliced ​​display screen units in a close position. The specific connection method is that when the two screens are horizontally spliced, the limit screw 18 as the positioning column is first installed in alignment with the countersunk hole on the positioning aluminum block 15. At this time, if there is a deviation between the two screens, it can be corrected by the positioning column, and then locked and fixed with the eccentric lock, so that fast multi-screen splicing can be well achieved.

[0104] Working principle and working process of the present invention:

[0105] The fast-joined foldable display screen provided by the present invention can be effectively lowered in height, packaged and transported by folding the LED display screen by setting two display screen units 2 that can be folded in the vertical direction on the set installation chassis 1. It can reduce space occupation, realize convenient transportation and installation, and is suitable for scenes such as commercial advertising, performance stage rental, exhibitions, and conferences; and the two display screen units 2 are relatively hingedly set through the hinge folding mechanism 3. At the same time, a latch assembly 4 is set between the two display screen units 2, and the upper and lower display screen units 2 of the display screen are separated by the latch 16 to unlock and fold, thereby improving the structural strength of the LED display screen in the display screen unit 2 in the upright state; the common splicing accuracy and strength problems of the sheet metal box are solved by the columns 10, the beams 9, the crossbars 25 and the positioning aluminum blocks 15.

[0106] Furthermore, in order to increase the scope of application of the display screen, multiple foldable display screens are laterally fixedly connected through eccentric locks and adjacent positioning aluminum blocks, thereby forming a quick-jointed foldable display screen all-in-one machine, forming a larger foldable display screen all-in-one machine, which is used in scenes such as conferences, movie entertainment, and performance stages.

[0107] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A fast splicing foldable display screen, characterized in that: include: Installing the chassis (1); A display screen unit (2), wherein two display screen units (2) are arranged in a vertical direction, and the two display screen units (2) are hingedly connected via a hinge folding mechanism (3); as well as A latch assembly (4), the latch assembly (4) being arranged between the two display screen units (2) and used for reinforcing the connection between the two display screen units (2) when they are unfolded into a planar state; The latch assembly (4) is arranged on both sides of the hinged arrangement of the two display screen units (2).

2. The fast-jointed foldable display screen according to claim 1, characterized in that: The bottom of the mounting chassis (1) is provided with eccentric wheels (5) at four corners.

3. The fast-jointed foldable display screen according to claim 1, characterized in that: The display screen unit (2) comprises a frame (6), a display panel (7) arranged on one side of the frame (6), and a back cover (8) arranged on the other side of the frame (6); The frame (6) comprises a cross beam (9) respectively arranged at the upper and lower ends, a plurality of columns (10) vertically fixedly connected to the cross beam (9), the plurality of columns (10) being evenly arranged between two of the cross beams (9), a plurality of cross bars (25) being transversely arranged between the plurality of columns (10), and the plurality of cross bars (25) being arranged in sequence in the length direction of the columns (10).

4. The fast-jointed foldable display screen according to claim 3, characterized in that: The display panel (7) comprises a plurality of LED display screen modules (11), and the plurality of LED display screen modules (11) are fixed on the frame (6) to form a display screen unit (2).

5. The fast-jointed foldable display screen according to claim 1, characterized in that: The hinge folding mechanism (3) comprises two hinge linings (13), the two hinge linings (13) are hingedly arranged via a hinge rod (14), and the two hinge linings (13) are respectively fixedly connected to adjacent columns in the two display screen units (2).

6. The fast-jointed foldable display screen according to claim 3, characterized in that: The latch assembly (4) comprises two positioning aluminum blocks (15) and a latch (16). The two positioning aluminum blocks (15) are respectively fixedly arranged on two adjacent upright posts in the display screen unit (2). The latch (16) can penetrate the two positioning aluminum blocks (15) and be fixedly arranged on the two positioning aluminum blocks (15).

7. The fast-joined foldable display screen according to claim 6, characterized in that: The positioning aluminum block (15) is provided with a pin hole (17) for the pin (16) to pass through and a threaded limit hole (19) for installing a limit screw (18); the pin hole (17) is vertically arranged with the threaded limit hole (19); the threaded limit hole (19) is provided with the limit screw (18); the positioning aluminum block (15) is provided with a hole position (26) connected with the column and the crossbeam and a limit hole (27) for installing the other end of the limit screw (18).

8. The fast-jointed foldable display screen according to claim 7, characterized in that: The latch hole (17) is located on the outer end surface of the positioning aluminum block (15) and is provided with a bevel guide groove (20), and the aperture of the latch hole of the positioning aluminum block in the upper display screen unit is larger than the aperture of the latch hole of the positioning aluminum block in the lower display screen unit.

9. The fast-joined foldable display screen according to claim 4, characterized in that: The display screen unit (2) is provided with an image acquisition module (21), the image acquisition module (21) is fixedly arranged on the crossbeam (9), the LED display screen module (11) is provided with a receiving card (22), a power supply (23) and a system mainboard (24), and the image acquisition module (21), the receiving card (22), the power supply (23) and the system mainboard (24) are electrically connected.

10. A fast-joined foldable display screen all-in-one machine, characterized in that: It comprises a display screen as described in any one of claims 1 to 9, wherein a plurality of the display screens are arranged in the transverse direction, and the plurality of the display screens are connected by fixing between an eccentric lock (28) and adjacent positioning aluminum blocks (15).

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