A holographic display screen capable of invisibly splicing and infinite extension

Abstract

The utility model discloses holographic display screen of being able to invisible splicing and infinite extension, including the standardization display module of a plurality of vertical and horizontal arrangement, one or more transverse rib two ends of each standardization display module are provided with the limiting hole respectively, and each limiting hole of each standardization display module and the limiting hole on the corresponding position of the standardization display module adjacent to the transverse are fixedly connected through the first connecting piece respectively, and one or more hollow holes in the last row of hollow holes of each standardization display module and the hollow hole on the corresponding position in the last row of hollow holes of the standardization display module of vertical symmetry arrangement are fixedly connected through the second connecting piece, the first connecting piece and the second connecting piece are all located in the transverse rib entity projection range of the standardization display module, and will not cause black spot additionally, can improve invisible effect, simple and compact structure, convenient operation.

Description

Technical Field

[0001] This utility model belongs to the field of LED display equipment technology, specifically relating to a holographic display screen that can be invisiblely spliced ​​and infinitely extended. Background Technology

[0002] Existing holographic displays typically use a grid-like PCB substrate with several LED bead positions to form transparent display modules. When splicing is required, invisible clips are used to seamlessly connect the transparent light-emitting circuits of adjacent transparent display modules, thereby extending the display area. However, although the invisible clips in the existing technology are very thin and small, the different materials of the clips and the PCB substrate result in different surface gloss and light interaction effects. This leads to a black spot effect in the clip area that is highlighted from different viewing angles. Therefore, the invisible clips in the existing technology have poor concealment effect, affecting the visual effect. Summary of the Invention

[0003] In order to solve the above-mentioned problems in the existing technology, the purpose of this utility model is to provide a holographic display screen that can be invisiblely spliced ​​and infinitely extended, without producing black spots, improving the invisibility effect, with a simple and compact structure and convenient operation.

[0004] The technical solution adopted in this utility model is as follows:

[0005] A holographic display screen capable of invisible splicing and infinite extension includes several standardized display modules arranged in a horizontal and vertical direction. Each standardized display module has a control area near one end of its PCB substrate. The main body of the PCB substrate of each standardized display module is composed of several horizontal and vertical ribs intersecting to form a display area with several hollow holes. Several LED beads are arranged on the front of the display area. A row of open semi-hollow holes is arranged on each of the two sides of the display area. The bottom edge of the display area is a straight edge.

[0006] Each of the standardized display modules has one or more transverse ribs with limiting holes at both ends. Each limiting hole of each standardized display module is fixedly connected to the limiting hole at the corresponding position of the transversely adjacent standardized display module through a first connector.

[0007] One or more of the hollow holes in the bottom row of each standardized display module are fixedly connected to the hollow holes in the corresponding positions in the top row of hollow holes of the adjacent standardized display modules arranged symmetrically in the longitudinal direction by means of a second connector.

[0008] Furthermore, the first connector is a horizontal U-shaped structure, and the width of the inner groove of the U-shaped structure of the first connector is less than or equal to twice the sum of the width of the vertical rib and the width of the hollow hole; the first connector is interference-fitted with the limiting hole.

[0009] Furthermore, the second connector is a C-shaped structure, and the width of the inner groove of the C-shaped structure of the second connector is less than or equal to the width of the transverse rib.

[0010] Furthermore, the position of the center point of each of the limiting holes in the vertical direction corresponds to the center line of the outermost row of hollow holes on the corresponding side of the standardized display module;

[0011] Both the first connector and the second connector are coated with a coating of the same material and color as the PCB substrate surface.

[0012] Furthermore, the vertical rib is provided with one or more LED positions between two adjacent hollow holes, and each LED position is provided with an LED.

[0013] Furthermore, both the first and second connectors are made of galvanized steel wire, stainless steel wire, or plastic-coated steel wire;

[0014] The diameter of the first connector is less than or equal to 1 / 2 of the width of the transverse connecting rib, and greater than or equal to 1 / 3 of the width of the transverse connecting rib;

[0015] The diameters of the first and second connectors are less than 1 / 5 of the width of the perforated hole.

[0016] Furthermore, the length of the first connector is four times the sum of the vertical rib and the width of the perforation;

[0017] The length of the second connector is N times the width of the transverse rib, where N is a positive integer.

[0018] Furthermore, the front of the control area is also equipped with several LED beads.

[0019] Furthermore, the main body of each of the standardized display modules is a mesh structure formed by carving or punching several hollow holes on the PCB substrate using a hollow engraving process or a die-stamping process.

[0020] Finally, the back of the control area is equipped with a power socket, a control signal terminal block, a switch button, and multiple indicator lights.

[0021] The beneficial effects of this utility model are as follows:

[0022] A holographic display screen capable of invisible splicing and infinite extension includes several standardized display modules arranged horizontally and vertically. Each standardized display module has one or more horizontal ribs with limiting holes at both ends. Each limiting hole of each standardized display module is fixedly connected to the corresponding limiting hole of the horizontally adjacent standardized display module through a first connector. One or more hollow holes in the bottom row of hollow holes of each standardized display module are fixedly connected to the corresponding hollow holes in the top row of hollow holes of the vertically symmetrically arranged adjacent standardized display modules through a second connector. Both the first connector and the second connector are located within the solid projection range of the horizontal ribs of the standardized display modules, which will not cause additional black spots, thus improving the invisibility effect. The structure is simple and compact, and the operation is convenient. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of a holographic display screen that can be invisiblely spliced ​​and infinitely extended according to Embodiment 1 of this utility model;

[0025] Figures 2-4 This is a magnified schematic diagram of a partial structure of a holographic display screen that can be invisiblely spliced ​​and infinitely extended in Embodiment 1 of this utility model, in which two horizontally adjacent standardized display modules are fixedly connected by two first limiting holes and a first connector.

[0026] Figures 5-7 This is a magnified schematic diagram of a partial structure of a holographic display screen that can be invisiblely spliced ​​and infinitely extended in Embodiment 1 of this utility model, in which two vertically adjacent standardized display modules are fixedly connected by a second connector.

[0027] Figures 8-10 This is an enlarged schematic diagram of a partial structure of the outermost vertically adjacent standardized display modules of the holographic display screen that can be invisiblely spliced ​​and infinitely extended according to Embodiment 1 of this utility model. The splicing point is fixedly connected by the second limiting hole, the third limiting hole and the third connector.

[0028] Figure 11 This is a schematic diagram of a single standardized display module structure of a holographic display screen that can be invisiblely spliced ​​and infinitely extended according to Embodiment 1 of this utility model;

[0029] Figures 12-14This is an enlarged schematic diagram of a partial structure of a holographic display screen capable of invisible splicing and infinite extension, which is fixedly connected to two adjacent display modules through two first limiting holes and a fourth connector, according to Embodiment 2 of this utility model.

[0030] Figures 15-16 This is a magnified partial structural diagram of a holographic display screen, which is capable of invisible splicing and infinite extension, in Embodiment 2 of this utility model, showing two vertically adjacent display modules fixedly connected by a fifth connector. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to the accompanying drawings.

[0032] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive element, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0033] like Figures 1-11 As shown, the present invention aims to provide a holographic display screen that can be invisiblely spliced ​​and infinitely extended. The working principle of the improved technical solution is roughly as follows: A holographic display screen capable of invisible splicing and infinite extension is constructed by splicing together several standardized display modules arranged horizontally and vertically. The left and right sides of each standardized display module are spliced ​​with adjacent standardized display modules arranged horizontally, and the lower end of each standardized display module is spliced ​​with adjacent standardized display modules arranged symmetrically vertically. Each standardized display module adopts the structure of a conventional transparent splicing screen. On the PCB substrate of each standardized display module, near one end... Each standardized display module has a control area 1. The main body of the PCB substrate of each standardized display module is composed of several horizontal ribs 21 and vertical ribs 22 intersecting to form a display area 2 with several cutout holes 23. Several LED beads 6 are set on the front of the display area 2. The control area is set at one end of the grid-shaped PCB substrate. The main body of the PCB substrate is set with a transparent display area. Several cutout holes and several LED beads are set in the display area. When the LED beads in the display area are turned off, the transparency can be maintained through the several cutout holes, presenting a transparent effect. The images can be displayed through the several LED beads according to the drive control signal.

[0034] A row of open semi-perforated holes 24 is provided on each side of the display area 2. When each standardized display module is spliced ​​with a horizontally adjacent standardized display module, the row of open semi-perforated holes 24 on the side and the row of open semi-perforated holes on the side of the adjacent standardized display module are combined to form a complete row of perforated holes, thereby achieving seamless horizontal splicing. The bottom edge of the display area 2 is a straight edge 25. Specifically, the bottom row of perforated holes in the display area is a whole hole, making the bottom edge of the PCB substrate a straight edge. The distance from the bottom edge of the bottom row of perforated holes in the display area to the bottom edge of the PCB substrate is equal to 1 / 2 of the distance between two adjacent rows of perforated holes, which is also 1 / 2 of the width of the horizontal rib 21. When each standardized display module is spliced ​​with a vertically symmetrically arranged adjacent standardized display module, the bottom straight edge 22 of the display area 2 is spliced ​​together to form a complete horizontal rib, thereby achieving seamless vertical splicing.

[0035] This utility model discloses a holographic display screen capable of invisible splicing and infinite extension. Based on the standardized display module structure of conventional transparent splicing screens, it optimizes and improves the standardized display module of conventional transparent splicing screens to overcome the defect of black spot effect caused by buckles in the display area in the prior art. Specifically, it can be further improved on the utility model patent technology solution with application number 202422970129.7. First limiting holes 26 are respectively set at both ends of one or more horizontal ribs of each standardized display module. Each first limiting hole 26 of each standardized display module is fixedly connected to the first limiting hole at the corresponding position of the horizontally adjacent standardized display module through a first connector 3. One or more hollow holes in the bottom row of hollow holes of each standardized display module are fixedly connected to the hollow holes at the corresponding positions in the top row of hollow holes of the vertically symmetrically arranged adjacent standardized display modules through a second connector 4.

[0036] The holographic display screen of this utility model, which can be invisiblely spliced ​​and infinitely extended, does not cause black spots because the first connector 3 and the second connector 4 are both located within the physical projection range of the horizontal rib 21 of the standardized display module. This improves the invisibility effect, and the structure is simple, compact, and easy to operate.

[0037] Furthermore, the position of the center point of each first limiting hole 26 in the vertical direction is set to the center line of the outermost row of hollow holes on the corresponding side of the standardized display module; the shape features are neat and orderly, meeting the requirements of visual aesthetics.

[0038] Furthermore, the surfaces of the first connector 3 and the second connector 4 are coated with a coating of the same material and color as the solder resist layer on the surface of the PCB substrate, so as to reduce the color difference between the first connector 3 and the second connector 4 and the PCB substrate, prevent visual effect differences, and improve the stealth effect.

[0039] Alternatively, the surface coating of the first connector 3 and the second connector 4 can be set to a matte finish. Because the matte surface has a low gloss and reflects less light, it presents a soft and non-glaring effect, reducing specular reflection. This can further reduce the color difference between the first connector 3 and the second connector 4 and the PCB substrate, thereby further preventing visual differences and improving the invisibility effect.

[0040] Furthermore, one or more LED positions are set at the location between two adjacent hollow holes 23 on the vertical rib 22, and one LED 6 is set at each LED position; the two outer sides of each LED position are the side surfaces of the two adjacent hollow holes. In addition to dissipating heat upwards and downwards, the heat generated by the LED during operation can also be directly dissipated through the side surfaces of the hollow holes. The side surfaces of the hollow holes constitute the heat dissipation surface of the LED, increasing the heat dissipation area; and the efficiency of dissipating heat directly through the side surfaces of the hollow holes is much greater than the efficiency of dissipating heat upwards through the glass medium and downwards through the substrate medium; thus, the heat dissipation area is increased, the service life is improved, the structure is simple and compact, the process is simple, and the operation is convenient.

[0041] Furthermore, several LED beads are also installed on the front of the control area to further improve the display imaging area and effect.

[0042] Furthermore, the PCB substrate of the main body of each standardized display module is manufactured using conventional printing production processes in the existing technology. Then, several hollow holes are engraved or punched on the PCB substrate by hollow engraving or die-stamping processes to form a mesh structure display area 2 with several hollow holes 23 formed by several horizontal ribs 21 and vertical ribs 22 intersecting each other.

[0043] Finally, a power socket, control signal terminal block, switch button and multiple indicator lights are provided on the back of the control area. The components of the control area are not shown in detail in the accompanying drawings of this utility model. The specific structural features can be adapted according to the conventional control structure in the prior art. Example

[0044] Example 1 provides a holographic display screen capable of invisible splicing and infinite extension, based on the above-described improved technical solution. It utilizes four standardized display modules arranged horizontally and vertically to form the holographic display screen. Building upon the improved technical solution, several elongated slot-shaped perforations are arranged horizontally and vertically in the display area. Two LED positions are located in the middle of the vertical ribs between two adjacent rows of perforations, thus accommodating two LED beads. Figures 1 to 11 As shown.

[0045] The four standardized display modules are a first standardized display module 100, a second standardized display module 200, a third standardized display module 300, and a fourth standardized display module 400; the first connector 3 and the second connector 4 are both located on the back of the holographic display screen; the specific structural features of the first connector 3 and the second connector 4 are as follows:

[0046] The first connector 3 adopts a horizontal U-shaped structure. The width of the inner groove of the U-shaped structure of the first connector 3 is set to be slightly less than twice the sum of the width of the vertical rib and the width of the hollow hole. The first connector is interference-fitted with the limiting hole, that is, the diameter of the first connector 3 is the negative tolerance of the diameter of the first limiting hole 26, that is, the diameter of the first connector 3 is slightly smaller than the diameter of the first limiting hole 26.

[0047] The two ends of the first connector 3 are inserted forward from the back of the two first limiting holes at the corresponding positions of the two horizontally adjacent standardized display modules to the middle section of the first connector, which is tightly attached to the back of the PCB substrate. The two sides of the first connector are clamped in the two first limiting holes at the corresponding positions of the two horizontally adjacent standardized display modules by interference fit.

[0048] The second connector 4 adopts a C-shaped structure. The width of the inner groove of the C-shaped structure of the second connector 4 is less than or equal to the width of the horizontal rib. The two ends of the second connector 4 are snapped from the back of the PCB substrate to the horizontal rib formed by the splicing of two vertically adjacent standardized display modules. The second connector 4 can be snapped to the horizontal rib formed by the splicing of two vertically adjacent standardized display modules through interference fit. That is, the upper side of the second connector 4 is snapped to the bottom edge of the bottom row of cutout holes of the upper standardized display module in the two vertically adjacent standardized display modules through interference fit. The lower side of the first connector 4 is snapped to the top edge of the top row of cutout holes of the lower standardized display module in the two vertically adjacent standardized display modules through interference fit.

[0049] In Example 1,

[0050] The width of the transverse reinforcing bars is 1.6mm;

[0051] The width of the vertical reinforcing bars is 2mm;

[0052] The width of the perforated hole is 1.9mm;

[0053] The diameter of the first limiting hole 26 is 0.4 mm;

[0054] The diameter of the first connector 3 is 0.4 mm;

[0055] The diameter of the second connector 4 is 0.15 mm.

[0056] To ensure reliable connection of several standardized display modules in a holographic display, one or more of the cutouts in the bottom row of cutouts of each of the two adjacent standardized display modules arranged symmetrically in the vertical direction can be fixedly connected to the cutouts in the corresponding positions of the cutouts in the top row of cutouts of the adjacent standardized display modules arranged symmetrically in the vertical direction by multiple second connectors 4. The multiple second connectors 4 are closely arranged in the same position between the same pair of cutouts, forming a complete horizontal rib composed of each standardized display module and the adjacent standardized display modules arranged symmetrically in the vertical direction.

[0057] Furthermore, limiting brackets can be provided on the inner surfaces of both ends of the first connector 3 and the second connector 4. The first connector 3 is secured to the two first limiting holes at corresponding positions of two horizontally adjacent standardized display modules by the limiting brackets; the second connector 4 is secured to the overall horizontal rib formed by the splicing and combination of two vertically adjacent standardized display modules by the limiting brackets, further improving the reliability of the locking connection. The limiting brackets can be wedge-shaped, and the specific setting of the limiting brackets can directly adopt the limiting bracket structure in the existing technology.

[0058] Furthermore, the first connector 3 and the second connector 4 can both be directly constructed by bending galvanized steel wire, stainless steel wire, or plastic-coated steel wire. Alternatively, a portion of material can be cut away from the inner surfaces at both ends of the first connector 3 and the second connector 4 to form limiting grooves. The first connector 3 is secured to the walls of the two first limiting holes at corresponding positions of two horizontally adjacent standardized display modules through the limiting grooves. The second connector 4 is secured to the overall horizontal rib formed by splicing and combining two vertically adjacent standardized display modules through the limiting grooves, further improving the reliability of the snap-fit ​​connection.

[0059] Furthermore, in a holographic display screen that can be invisiblely spliced ​​and infinitely extended by splicing together several standardized display modules arranged in a vertical and horizontal manner, a third connector 5 can be set at the splicing point of the two vertically adjacent standardized display modules on the outermost sides of the left and right sides. The third connector 5 also adopts a C-shaped structure and has a diameter of 0.4mm. On the vertical ribs at the splicing point of the two vertically adjacent standardized display modules on the outermost sides of the left and right sides, a second limiting hole 27 and a third limiting hole 28 are respectively set. The second limiting hole 27 and the third limiting hole 28 are respectively set at the position between the two lamp bead positions.

[0060] The third connector 5 is inserted from the back of the second limiting hole 27 and the third limiting hole 28 at the corresponding positions of the two longitudinally adjacent standardized display modules and is tightly attached to the back of the PCB substrate. The two sides of the third connector 5 are clamped to the second limiting hole 27 and the third limiting hole 28 at the corresponding positions of the two longitudinally adjacent standardized display modules through interference fit.

[0061] In this example, the two vertically adjacent standardized display modules on the far left are the first standardized display module 100 and the second standardized display module 200. The third connector 5 is inserted from the back of the first standardized display module 100 and the second standardized display module 200 forward into the second limiting hole 27 of the first standardized display module 100 and the third limiting hole 28 of the second standardized display module 200. The middle section of the third connector 5 is tightly attached to the back of the PCB substrate. The two sides of the third connector 5 are clamped to the second limiting hole 27 of the first standardized display module 100 and the third limiting hole 28 of the second standardized display module 200 by interference fit.

[0062] Correspondingly, in this example, the two vertically adjacent standardized display modules on the far right are the third standardized display module 300 and the fourth standardized display module 400. Another third connector 5 can also be inserted from the back of the third standardized display module 300 and the fourth standardized display module 400 forward into the third limiting hole 28 of the third standardized display module 300 and the second limiting hole 27 of the fourth standardized display module 400, so that the middle section of the other third connector 5 is tightly attached to the back of the PCB substrate. The two sides of the other third connector 5 are clamped to the third limiting hole 28 of the third standardized display module 300 and the second limiting hole 27 of the fourth standardized display module 400 by interference fit.

[0063] Similarly, limiting plates can be provided on the inner surfaces of both ends of the third connector 5, or a portion of material can be cut away from the inner surfaces of both ends of the third connector 5 to form limiting grooves. The third connector 5 can also be limited and locked onto the second limiting hole 27 and the third limiting hole 28 by limiting plates or limiting grooves.

[0064] To simplify the production process and improve the versatility and standardization of components, a second limiting hole 27 and a third limiting hole 28 can be set at the corresponding positions of each standardized display module.

[0065] The third connector 5 can improve the connection stability of the splicing points of the two adjacent upper and lower standardized display modules on the left and right sides of the holographic display screen that can be spliced ​​together invisibly and infinitely. This further improves the connection reliability of the splicing points of the two adjacent upper and lower standardized display modules on the left and right sides of the holographic display screen that can be spliced ​​together invisibly and infinitely. Example

[0066] Example 1 provides a holographic display screen capable of invisible splicing and infinite extension according to the above-described improved technical solution. Based on the technical solution of Example 1, the first connector 3 and the second connector 4 in Example 1 are replaced by the fourth connector 30 and the fifth connector 40 of the alternative technical solution; for example... Figures 12-16 As shown, the specific structural features of the fourth connector 30 and the fifth connector 40 are as follows:

[0067] Both the fourth connector 30 and the fifth connector 40 are made of galvanized steel wire, stainless steel wire or plastic-coated steel wire. The diameter is adaptively set according to the specific size and specifications of the horizontal ribs 21, vertical ribs 22 and hollow holes 23 of the PCB substrate. The raw material cost is low, the production process of the finished product is simple, the structure is compact and the operation is convenient.

[0068] The specifications and dimensions of the fourth connector 30 and the fifth connector 40 can be set according to the following rules: the length of the third connector is four times the sum of the width of the vertical rib and the width of the cutout hole. The third connector is bent backward from a position 1 / 4 of the length from both ends to form a horizontal U-shaped structure. Then, the two ends of the third connector are inserted backward from the front of the two limiting holes at the corresponding positions of the two horizontally adjacent standardized display modules to the middle section of the third connector and tightly attached to the front of the PCB substrate. Then, the two ends of the third connector are further bent to tightly attach to the back of the PCB substrate.

[0069] The length of the fifth connector 40 is N times the width of the transverse rib, where N is a positive integer. The fifth connector 40 extends from the front of the PCB substrate of the upper standardized display module of the two vertically adjacent standardized display modules, passes through the bottom row of cutouts, and then bends downwards to be close to the back of the PCB substrate. The end of the fifth connector 40 is aligned with the top edge of the top row of cutouts of the lower standardized display module. The other end of the fifth connector 40 is then wrapped around the transverse rib formed by the splicing and combination of the two vertically adjacent standardized display modules several times until the other end of the fifth connector 40 is also close to the back of the transverse rib formed by the splicing and combination of the two standardized display modules, and the end of the other end of the fifth connector 40 is aligned with the bottom edge of the bottom row of cutouts of the upper standardized display module.

[0070] Alternatively, the fifth connector 40 extends from the front of the PCB substrate of the lower standardized display module of the two vertically adjacent standardized display modules, passes through the top row of cutouts, and then bends upwards to be close to the back of the PCB substrate. The end of the fifth connector 40 is aligned with the bottom edge of the bottom row of cutouts of the upper standardized display module. The other end of the fifth connector 40 is then wrapped around the horizontal rib formed by the splicing and combination of the two vertically adjacent standardized display modules several times until the other end of the fifth connector 40 is also close to the back of the horizontal rib formed by the splicing and combination of the two standardized display modules, and the end of the other end of the fifth connector 40 is aligned with the top edge of the top row of cutouts of the lower standardized display module.

[0071] The diameter of the fourth connector 30 is less than or equal to 1 / 2 of the width of the transverse connecting rib, and greater than or equal to 1 / 3 of the width of the transverse connecting rib; the diameters of the fourth connector 30 and the fifth connector 40 are less than 1 / 5 of the width of the perforated hole. This ensures connection strength while minimizing volume, thus reducing visual presence and improving the invisibility effect.

[0072] In Example 1,

[0073] The width of the transverse reinforcing bars is 1.6mm.

[0074] The width of the vertical reinforcing bars is 2mm.

[0075] The width of the perforated hole is 1.9mm.

[0076] The diameter of the fourth connector 30 is φ0.8mm. Theoretically, the length of the fourth connector 30 should be set to 15.8mm. However, considering the material force deformation performance of the fourth connector 30 during bending and the convenience of operation in actual production, the difference of 0.2mm is negligible compared to the length of 15.8mm. Therefore, the length of the first connector 3 is rounded to 16mm.

[0077] The fifth connector 40 has a diameter of 0.3mm and a length that is 3, 5, or 7 times the width of the transverse rib. Since the width of the cutout hole is 1.9mm, the number of wrapping turns of the fifth connector 40 is limited. Wrapping it 3 times is basically enough to fill the width space of the cutout hole. Therefore, setting the length of the fifth connector 40 to 7 times the width of the transverse rib is basically the limit. In this example, the length of the fifth connector 40 is 7 times the width of the transverse rib, and it is wrapped 3 times.

[0078] The theoretical length of the fifth connector 40 is 11.2 mm. Considering the material force deformation performance of the first connector during bending and the convenience of operation in actual production, the difference of 0.2 mm is negligible compared to the length of 11.2 mm. Therefore, the length of the fifth connector 40 is rounded to 11 mm.

[0079] This utility model discloses a holographic display screen capable of invisible splicing and infinite extension, comprising several standardized display modules arranged horizontally and vertically. Each standardized display module has limiting holes at both ends of one or more horizontal ribs. Each limiting hole of each standardized display module is fixedly connected to the corresponding limiting hole of the horizontally adjacent standardized display module through a first connector. One or more hollow holes in the bottom row of hollow holes of each standardized display module are fixedly connected to the corresponding hollow holes in the top row of hollow holes of the vertically symmetrically arranged adjacent standardized display modules through a second connector. Both the first connector and the second connector are located within the solid projection range of the horizontal ribs of the standardized display module, and will not cause additional black spots, thereby improving the invisibility effect. The structure is simple and compact, and the operation is convenient.

[0080] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. This utility model is not limited to the above optional embodiments. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, regardless of any changes in its shape or structure, should be covered within the scope of the claims of this utility model as long as they do not depart from the spirit and scope of the technical solution of this utility model.

Claims

1. A holographic display screen capable of invisible splicing and infinite extension, comprising a plurality of standardized display modules arranged horizontally and vertically, wherein a control area is respectively provided on one end of the PCB substrate of each standardized display module, and the main body of the PCB substrate of each standardized display module is respectively composed of a plurality of horizontal and vertical ribs intersecting to form a display area with a plurality of hollow holes, wherein a plurality of LED beads are provided on the front side of the display area, and a row of open semi-hollow holes is provided on each of the two sides of the display area, and the bottom edge of the display area is a straight edge; characterized in that: Each of the standardized display modules has one or more transverse ribs with limiting holes at both ends. Each limiting hole of each standardized display module is fixedly connected to the limiting hole at the corresponding position of the transversely adjacent standardized display module through a first connector. One or more of the hollow holes in the bottom row of each standardized display module are fixedly connected to the hollow holes in the corresponding positions in the top row of hollow holes of the adjacent standardized display modules arranged symmetrically in the longitudinal direction by one or more second connectors.

2. The holographic display screen capable of invisible splicing and infinite extension according to claim 1, characterized in that: The position of the center point of each of the limiting holes in the vertical direction corresponds to the center line of the outermost row of hollow holes on the corresponding side of the standardized display module; Both the first connector and the second connector are coated with a coating of the same material and color as the PCB substrate surface.

3. The holographic display screen capable of invisible splicing and infinite extension according to claim 1, characterized in that: The vertical ribs are provided with one or more LED positions between two adjacent hollow holes, and each LED position is provided with an LED.

4. The holographic display screen capable of invisible splicing and infinite extension according to claim 1, characterized in that: The first connector is a horizontal U-shaped structure. The width of the inner groove of the U-shaped structure of the first connector is less than or equal to twice the sum of the width of the vertical rib and the width of the hollow hole. The first connector is interference-fitted with the limiting hole.

5. The holographic display screen capable of invisible splicing and infinite extension according to claim 1, characterized in that: The second connector is a C-shaped structure, and the width of the inner groove of the C-shaped structure of the second connector is less than or equal to the width of the transverse rib.

6. The holographic display screen capable of invisible splicing and infinite extension according to claim 2, characterized in that: Both the first and second connectors are made of galvanized steel wire, stainless steel wire, or plastic-coated steel wire; The diameter of the first connector is less than or equal to 1 / 2 of the width of the transverse connecting rib, and greater than or equal to 1 / 3 of the width of the transverse connecting rib; The diameters of the first and second connectors are less than 1 / 5 of the width of the perforated hole.

7. The holographic display screen capable of invisible splicing and infinite extension according to claim 4, characterized in that: The length of the first connector is four times the sum of the vertical rib and the width of the hollow hole; The length of the second connector is N times the width of the transverse rib, where N is a positive integer.

8. The holographic display screen capable of invisible splicing and infinite extension according to claim 1, characterized in that: Several LED beads are also provided on the front of the control area.

9. The holographic display screen capable of invisible splicing and infinite extension according to claim 1, characterized in that: The main body of each standardized display module is a mesh structure formed by carving or punching several hollow holes on a PCB substrate using a hollow engraving process or a die-stamping process.

10. The holographic display screen capable of invisible splicing and infinite extension according to claim 1, characterized in that: The back of the control area is equipped with a power socket, control signal terminal block, switch button and multiple indicator lights.

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