Flexible and bendable holographic transparent screen

Abstract

The invention discloses a flexible bendable holographic transparent screen which comprises a main substrate and at least two auxiliary substrates, the at least two auxiliary substrates are located on the two sides of the main substrate, main back plates are fixedly arranged on the two sides of the back of the main substrate respectively, and auxiliary back plates are fixedly arranged on the two sides of the back of each auxiliary substrate respectively. The auxiliary back plate on one side of the auxiliary substrate is tightly attached to the main back plate on one side of the main substrate, and a center fixing back plate is fixedly arranged in the middle of the back of the main substrate. By controlling the lifting clamping assembly, clamping and splicing of the main base plate and the auxiliary base plate can be completed, automatic locking of the splicing position of the main base plate and the auxiliary base plate and rapid adjustment of the radian can be completed through the lifting clamping assembly, all structures are integrated, the structure is simplified, and operation is convenient.

Description

Technical Field

[0001] The present invention relates to a holographic transparent screen, and more particularly to a flexible and bendable holographic transparent screen. Background Art

[0002] As a new display technology, holographic transparent screens are widely used in many fields such as advertising display, smart home, and virtual reality due to their advantages of high transparency, holographic display, flexibility, and bendability. Currently, the holographic transparent splicing screens on the market are usually composed of multiple modular screen bodies spliced and installed through snap components to meet the display requirements of large sizes or specific shapes. Although this splicing method can meet the flexible bending adjustment requirements of the screen body to a certain extent, enabling the screen to adapt to the radian installation in various occasions, there are still many deficiencies in actual applications.

[0003] First of all, the existing splicing screens rely on the mutual engagement of multiple snap components to complete the splicing, resulting in obvious splicing seams at the splicing positions. Due to the arbitrary flexible bending characteristics of the holographic screen, the splicing seams are easily opened during the bending process of the screen, and then obvious black lines are generated during display, seriously affecting the display effect and visual experience.

[0004] Secondly, as the holographic screen maintains a radian deformation for a long time, the snap components at the splicing positions are prone to looseness or damage. This not only reduces the service life of the screen but also increases the maintenance and replacement costs. In order to enhance the firmness of the splicing position, some manufacturers use the method of gluing and sealing at the splicing position. Although the splicing strength is improved to a certain extent, this also brings new problems. Specifically, once a splicing module of the holographic screen is damaged, the glued splicing part is difficult to disassemble, making the repair and replacement of the entire screen complicated and time-consuming.

[0005] In addition, the radian adjustment process of the existing flexible holographic transparent screen is often cumbersome. Since the screen is a flexible structure as a whole, after the user adjusts the radian, the radian needs to be positioned to keep the screen in the expected arc state. This process is not only complex to operate, but also the greater the radian adjustment amplitude, the greater the tension pressure at the splicing position, and the more prone to cracking at the splicing position, further affecting the stability and use effect of the screen. Summary of the Invention

[0006] In order to solve the above problems, the present invention provides a flexible and bendable holographic transparent screen. By controlling the lifting and clamping assembly, it can not only complete the clamping and splicing of the main substrate and the sub-substrate, but also complete the automatic locking of the splicing position of the main substrate and the sub-substrate and the rapid adjustment of the radian through the lifting and clamping assembly, integrating various structures into one, effectively solving the deficiencies in the prior art.

[0007] The present invention is realized through the following technical solutions: A flexible and bendable holographic transparent screen, comprising: A main substrate and at least two sub-substrates. The at least two sub-substrates are located on both sides of the main substrate. Main backplates are fixedly arranged on both sides of the back of the main substrate respectively. Sub-backplates are fixedly arranged on both sides of the back of each sub-substrate respectively. When splicing, the sub-backplate on one side of the sub-substrate is arranged closely against the main backplate on one side of the main substrate. A central fixed backplate is fixedly arranged at the middle position of the back of the main substrate; It further includes a lifting and clamping assembly, which is used for clamping the main backplate and the sub-backplate to complete the splicing and installation of the main substrate and the sub-substrate; It further includes a splicing locking mechanism, which is arranged between the splicing positions of the main substrate and the sub-substrate; An elevating arc driving mechanism is also arranged between the lifting and clamping assembly, the main backplate and the sub-backplate. Through the lifting action of the lifting and clamping assembly relative to the main substrate and the sub-substrate, automatic locking of the splicing locking mechanism and automatic adjustment of the arc size between the sub-substrate and the main substrate are realized.

[0008] As a preferred technical solution, the lifting and clamping assembly includes two clamping plates and a connecting plate. The connecting plate is used for connecting the clamping plates on both sides. Each clamping plate is provided with a clamping cavity. The main backplate and the sub-backplate are both inserted into the clamping cavity and clamped by the clamping plates. An end stroke clearance cavity is formed between the top surface of the clamping cavity and the top surfaces of the main substrate and the sub-substrate. The arc size between the sub-substrate and the main substrate is adjusted by reducing the stroke clearance cavity.

[0009] As a preferred technical solution, the joint surfaces of the main backplate and the sub-backplate are smooth surfaces. A chute is longitudinally opened on the non-adjacent side of the main backplate and the sub-backplate. A slider is arranged on the side of the clamping plate opposite to the chute, and the slider is slidably buckled into the chute; The sub-backplate includes a first sub-backplate and a second sub-backplate. The first sub-backplate is spliced and joined with the main backplate. A driving groove is opened from top to bottom on the bottom surface of the chute of the first sub-backplate. A driving block is arranged at the top position of the slider corresponding to the driving groove.

[0010] As a preferred technical solution, the splicing and locking mechanism includes a locking insert, which is movably arranged in an insert slot opened in the first sub-backplane. The insert slot is open on one side facing the main substrate and the sub-substrate. Splicing convex parts are formed on the splicing surfaces of the main substrate and the sub-substrate. A locking insertion part is arranged on the splicing convex part of one side of the main substrate relative to the sub-substrate. A locking slot is arranged on the sub-substrate corresponding to the locking insertion part. A first locking groove is opened on one side of the locking insertion part facing the locking insert. A second locking groove is arranged on the sub-substrate at a position corresponding to the first locking groove. When the main substrate and the sub-substrate are spliced, the locking insertion part is inserted into the locking slot, and the first locking groove is arranged corresponding to the second locking groove. After the locking insert is pushed out by the driving block and inserted into the first locking groove and the second locking groove, the locking at the splicing surface of the main substrate and the sub-substrate is completed.

[0011] As a preferred technical solution, one side of the locking insert facing the driving block is an inclined driving surface. The driving block is located at the topmost position of the inclined driving surface and contacts one side of the inclined driving surface. When the stroke clearance cavity is reduced, the driving block pushes out the locking insert and makes the locking insert inserted into the first locking groove and the second locking groove. A plurality of first track grooves parallel to the horizontal plane are opened on both side surfaces of the locking insert. Second track grooves are arranged on the inner wall of the insert slot at positions corresponding to the first track grooves. Ball bearings are arranged in the first track grooves and the second track grooves. Both sides of the locking insert are in rolling contact with the insert slot through the ball bearings.

[0012] As a preferred technical solution, the lifting arc driving mechanism includes first brackets arranged on both sides of each clamping plate. Magnetic attraction arrays are arranged on the first brackets, and the magnetic attraction arrays are located at the upper ends of the first brackets. And second brackets arranged on one side of the second sub-backplane. First magnetic attraction blocks are arranged on the second brackets, and the first magnetic attraction blocks are arranged at the bottom positions of the second brackets. The first magnetic attraction blocks and the magnetic attraction arrays are arranged in a staggered manner. Third brackets are respectively arranged on both sides of the central fixed backplane, and second magnetic attraction blocks are further arranged on the third brackets.

[0013] As a preferred technical solution, the magnetic attraction array includes more than one third magnetic attraction block with different magnetic attraction forces. The third magnetic attraction block at the topmost position has the largest magnetic force, and the magnetic force gradually decreases from top to bottom. By switching the third magnetic attraction blocks at different height positions to attract the first magnetic attraction block and the second magnetic attraction block, the arc of the sub-substrate relative to the main substrate is adjusted.

[0014] As a preferred technical solution, a fixing plate is vertically arranged on the central fixing back plate. A support pad is arranged on the back surface of the fixing plate, and screw holes are further arranged on the fixing plate. The fixing plate is fixedly locked by screws.

[0015] As a preferred technical solution, the clamping plate is made of an elastic metal material, and when the main back plate and the sub-back plate are both inserted into the clamping cavity, the clamping plate is elastically expanded.

[0016] As a preferred technical solution, more than one through ventilation hole is arranged on both the main substrate and the sub-substrate, and lamp beads are arranged in the solid areas of the main substrate and the sub-substrate.

[0017] The beneficial effects of the present invention are as follows: The present invention respectively arranges back plates on both sides of the back of the main substrate and the sub-substrate, and uses the lifting clamping assembly to complete the clamping and splicing of the main substrate and the sub-substrate. At the same time, by using the lifting clamping assembly and controlling the height position of the lifting clamping assembly relative to the main substrate and the sub-substrate, the automatic locking of the splicing position of the main substrate and the sub-substrate can be realized, preventing cracking, and the automatic adjustment of the arc of the sub-substrate relative to the main substrate can be realized. Without a complex structure, the adjustment is more convenient, the overall strength is greatly improved, and it can meet the stable use while realizing rapid disassembly and assembly. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a schematic diagram of the overall back structure of the present invention; Figure 2 It is a schematic diagram of the overall front structure of the present invention; Figure 3 It is an overall exploded view of the present invention; Figure 4 It is a partial structural schematic diagram at the splicing position of the main substrate and the sub-substrate of the present invention; Figure 5 For the present invention Figure 4 The partial enlarged view at A in; Figure 6 It is a partial enlarged view at the position of the splicing and locking mechanism of the present invention; Figure 7 It is an exploded view of the main substrate and the sub-substrate of the present invention; Explanation of the reference numerals: 1. Main substrate; 2. Substrate; 9. Main backplane; 6. Sub-backplane; 62. First sub-backplane; 61. Second sub-backplane; 5. Central fixed backplane; 15. Clamping plate; 3. Connecting plate; 16. Stroke clearance cavity; 20. Slide groove; 18. Slide block; 19. Driving groove; 25. Driving block; 22. Locking insert; 24. Insert groove; 32. Splicing convex part; 29. Locking insertion part; 31. Locking slot; 28. First locking groove; 23. Second locking groove; 26. Inclined driving surface; 14. First bracket; 13. Magnetic attraction array; 7. Second bracket; 8. First magnetic attraction block; 10. Third bracket; 12. Second magnetic attraction block; 4. Fixed plate; 17. Support pad; 11. Screw hole; 30. Light-emitting diode. Detailed implementation mode

[0020] All features disclosed in this specification, or all steps in the disclosed methods or processes, except for mutually exclusive features and / or steps, can be combined in any way.

[0021] Any feature disclosed in this specification (including any additional claims, abstract and drawings), unless specifically stated, can be replaced by other equivalent or similar-purpose alternative features. That is, unless specifically stated, each feature is only an example of a series of equivalent or similar features.

[0022] As Figure 1 and Figure 2 As shown, a flexible and bendable holographic transparent screen of the present invention includes a main substrate 1 and two substrates 2. The two substrates 2 are located on both sides of the main substrate 1. Main backplanes 9 are respectively fixedly arranged on both sides of the back of the main substrate 1. Sub-backplanes 6 are respectively fixedly arranged on both sides of the back of each substrate 2. When splicing, the sub-backplane 6 on one side of the substrate 2 is closely arranged against the main backplane 9 on one side of the main substrate 1. A central fixed backplane 5 is fixedly arranged at the middle position of the back of the main substrate 1. The central fixed backplane 5 serves as a central fixing member for bearing the weight of the entire screen. When splicing, one side of the substrate 2 is butted against the main substrate 1 for splicing; It further includes a lifting and clamping assembly, which is used to clamp the main backplane 9 and the sub-backplane 6 to complete the splicing and installation of the main substrate 1 and the substrate 2. The lifting and clamping assembly is not only used for clamping and splicing the main substrate 1 and the substrate 2, but also can realize the arc adjustment of the substrate 2 relative to the main substrate 1 and the automatic locking of the splicing position of the substrate 2 and the main substrate 1. The present invention no longer uses a snap structure. By arranging the backplane on the back of the substrate, the quick splicing and clamping of the screen are realized; It further includes a splicing and locking mechanism, which is arranged between the splicing positions of the main substrate 1 and the substrate 2. When the lifting and clamping assembly descends, it is linked with the splicing and locking mechanism to complete the automatic locking at the splicing position of the main substrate 1 and the substrate 2, preventing the generation of splicing seams; Among them, a lifting arc driving mechanism is further provided between the lifting and clamping assembly, the main back plate 9 and the auxiliary back plate 6. Through the lifting action of the lifting and clamping assembly relative to the main substrate 1 and the auxiliary substrate 2, automatic locking of the splicing and locking mechanism and automatic adjustment of the arc size between the auxiliary substrate 2 and the main substrate 1 are achieved. Therefore, the lifting action of the lifting and clamping assembly is linked with the splicing and locking mechanism and the lifting arc driving mechanism, and a series of rapid operations can be completed.

[0023] Among them, as Figure 1 and Figure 3 shown, the lifting and clamping assembly includes two clamping plates 15 and a connecting plate 3. The connecting plate 3 is used to connect the clamping plates 15 on both sides. Each clamping plate 15 is provided with a clamping cavity. The main back plate 9 and the auxiliary back plate 6 are inserted into the clamping cavity and clamped by the clamping plates 15. An end stroke clearance cavity 16 is formed between the top surface of the clamping cavity and the top surfaces of the main substrate 1 and the auxiliary substrate 2. The arc size between the auxiliary substrate 2 and the main substrate 1 is adjusted by reducing the stroke clearance cavity 16. When it is necessary to adjust the arc size between the auxiliary substrate 2 and the main substrate 1, only need to press down the clamping plate 15 to reduce the stroke clearance cavity 16, and the adjustment of the arc can be achieved. The lifting and clamping assembly can be lifted manually or automatically driven by setting a driving member, such as a cylinder, a motor, etc. at the top.

[0024] As Figure 3 , Figure 4 and Figure 5 shown, the joint surfaces of the main back plate 9 and the auxiliary back plate 6 are smooth surfaces. A chute 20 is longitudinally opened on the back side of both the main back plate 9 and the auxiliary back plate 6. A slider 18 is provided on one side of the clamping plate 15 opposite to the chute 20. The slider 18 is slidably buckled into the chute 20. When the clamping plate 15 moves up and down, the slider 18 can move up and down along the chute 20; As Figure 1 , Figures 3 - 5 and Figure 7 shown, the auxiliary back plate 6 includes a first auxiliary back plate 626 and a second auxiliary back plate 616. The first auxiliary back plate 626 is spliced and jointed with the main back plate 9. A driving groove 19 is opened from top to bottom on the bottom surface of the chute 20 of the first auxiliary back plate 626. A driving block 25 is provided at the top position of the slider 18 corresponding to the driving groove 19. When the clamping plate 15 moves up and down, the driving block 25 can be driven to move up and down and slide in the driving groove 19.

[0025] As Figure 4 , Figure 5 and Figure 6As shown, the splicing and locking mechanism includes a locking insert piece 22 which is movably arranged in an insert piece groove 24 formed in the first sub-back plate 626. The insert piece groove 24 is open on one side relative to the main substrate 1 and the sub-substrate 2. Splicing convex parts 32 are formed on the splicing surfaces of the main substrate 1 and the sub-substrate 2. A locking insert part 29 is arranged on the splicing convex part 32 on one side of the main substrate 1 relative to the sub-substrate 2. A locking slot 31 is arranged on the sub-substrate 2 corresponding to the locking insert part 29. A first locking groove 28 is formed on one side of the locking insert part 29 relative to the locking insert piece 22. A second locking groove 23 is arranged on the sub-substrate 2 at a position corresponding to the first locking groove 28. When the main substrate 1 and the sub-substrate 2 are spliced, the locking insert part 29 is inserted into the locking slot 31, and the first locking groove 28 is arranged corresponding to the second locking groove 23. When the locking insert piece 22 is pushed out by the driving block 25 and inserted into the first locking groove 28 and the second locking groove 23, the locking at the splicing surface of the main substrate 1 and the sub-substrate 2 is completed. When the clamping plate 15 descends, the driving block 25 will extrude the locking insert piece 22, so that the locking insert piece 22 is inserted into the first locking groove 28 and the second locking groove 23. At this time, the separation of the splicing position of the main substrate 1 and the sub-substrate 2 can be prevented, achieving the purpose of automatic locking and preventing the splicing position from cracking.

[0026] As Figure 4 and Figure 5 shown, one side of the locking insert piece 22 facing the driving block 25 is an inclined driving surface 26. The driving block 25 is located at the topmost position of the inclined driving surface 26 and contacts one side of the inclined driving surface 26. When the stroke clearance cavity 16 is reduced, the driving block 25 pushes out the locking insert piece 22 and makes the locking insert piece 22 inserted into the first locking groove 28 and the second locking groove 23. In order to enable the driving block 25 to better push out the locking insert piece 22, in this embodiment, a plurality of first track grooves parallel to the horizontal plane are formed on both side surfaces of the locking insert piece 22. Second track grooves are arranged on the inner wall of the insert piece groove 24 at positions corresponding to the first track grooves. Ball bearings are arranged in the first track grooves and the second track grooves. Both sides of the locking insert piece 22 are in rolling contact with the insert piece groove 24 through the ball bearings. In this way, the locking insert piece 22 can be better translated and pushed out, reducing friction.

[0027] In this embodiment, a blade elastic reset mechanism may also be provided at positions on both sides of the locking blade 22 that avoid the track grooves. That is, the blade elastic reset mechanism includes guiding sliding grooves 20 formed on both sides of the blade groove 24, and guiding sliders 18 provided on both sides of the locking blade 22. A reset spring may be provided in the guiding sliding groove 20, and the guiding slider 18 is slidably arranged in the guiding sliding groove 20. In this way, after the locking blade 22 is pushed out by the driving block 25, the reset spring can be compressed. After the clamping plate 15 is reset, the locking blade 22 can be reset by using the reset spring, so that the locking blade 22 is separated from the first and second locking grooves 23. At this time, by removing the clamping plate 15, the substrate at any position can be quickly removed.

[0028] As Figure 1 , Figure 3 and Figure 7 shown, the lifting arc driving mechanism includes first brackets 14 provided on both sides of each clamping plate 15. Magnetic attraction arrays 13 are provided on the first brackets 14, and the magnetic attraction arrays 13 are located at the upper ends of the first brackets 14. And second brackets 7 provided on one side of the second sub-backplate 616. First magnetic attraction blocks 8 are provided on the second brackets 7, and the first magnetic attraction blocks 8 are provided at the bottom positions of the second brackets 7. The first magnetic attraction blocks 8 are arranged in a staggered manner with the magnetic attraction arrays 13. Third brackets 10 are respectively provided on both sides of the central fixed backplate 5. Second magnetic attraction blocks 12 are further provided on the third brackets 10. Due to the staggered arrangement, when the clamping plate 15 descends, due to the up-and-down action between the magnetic attraction blocks, when the clamping plate 15 just starts to descend, the influence of the magnetic attraction force is relatively small. And since the driving block 25 directly drives and extrudes the locking blade 22, when the locking blade 22 is inserted into the locking groove to complete the locking of the main substrate 1 and the sub-substrate 2, the influence of the magnetic attraction part is still relatively small. After the locking blade 22 partially enters the locking groove, as the clamping plate 15 continues to descend, the magnetic attraction array 13 will continuously switch to the third magnetic attraction block with a greater magnetic force to magnetically attract the first magnetic attraction block 8 and the second magnetic attraction block 12 at both ends. As the third magnetic attraction block continuously descends, the third magnetic attraction block will continuously attract the first magnetic attraction block 8 and the second magnetic attraction block 12 at both ends. At this time, a curvature will be generated between the sub-substrate 2 and the main substrate 1. The more the clamping plate 15 descends, the greater the generated curvature.

[0029] Specifically, the magnetic attraction array 13 includes more than one third magnetic attraction block with different magnetic attraction forces. The third magnetic attraction block at the topmost position has the greatest magnetic force, and the magnetic force gradually decreases from top to bottom. By switching the third magnetic attraction blocks at different height positions to attract the first magnetic attraction block 8 and the second magnetic attraction block 12, the arc of the secondary substrate 2 is adjusted relative to the main substrate 1. When the clamping plate 15 is in the initial position, the third magnetic attraction block at the bottommost position (with the smallest magnetic force) will be closest to the first magnetic attraction block 8 and the second magnetic attraction block 12 on both sides. In this way, the magnetic attraction force is the smallest, and the secondary substrate 2 will not generate an arc relative to the main substrate 1. As the clamping plate 15 continuously descends, at this time, the magnetic force components of the third magnetic attraction blocks increase, and the magnetic attraction forces on the first magnetic attraction block 8 and the second magnetic attraction block 12 also continuously increase. Furthermore, the linkage adjustment of the arc is realized by controlling the lifting of the clamping plate 15.

[0030] Among them, a fixing plate 4 is vertically arranged on the central fixing back plate 5. A support pad 17 is arranged on the back of the fixing plate 4. Screw holes 11 are also arranged on the fixing plate 4. The fixing plate 4 is fixedly locked by screws. During use, it is fixed by locking screws on the wall through the fixing plate 4, and the contact stability is increased through the support pad 17.

[0031] In this embodiment, the clamping plate 15 is made of an elastic metal material. When both the main back plate 9 and the secondary back plate 6 are inserted into the clamping cavity, the clamping plate 15 is elastically expanded, thereby increasing the locking force, increasing the firmness after the clamping plate 15 clamps, and preventing random displacement.

[0032] As Figure 6 shown, more than one through ventilation hole is arranged on both the main substrate 1 and the secondary substrate 2, which increases the heat dissipation, reduces the overall weight, and makes it more portable. Lamp beads 30 are arranged in the solid areas of the main substrate 1 and the secondary substrate 2, and each point is lit through the lamp beads 30 to achieve the purpose of display.

[0033] The beneficial effects of the present invention are as follows: In the present invention, back plates are respectively arranged on both sides of the back of the main substrate 1 and the secondary substrate 2, and the main substrate 1 and the secondary substrate 2 are clamped and spliced by using the lifting clamping assembly. At the same time, by using the lifting clamping assembly and controlling the height position of the lifting clamping assembly relative to the main substrate 1 and the secondary substrate 2, the automatic locking of the splicing position of the main substrate 1 and the secondary substrate 2 can be realized, preventing cracking, and the automatic adjustment of the arc of the secondary substrate 2 relative to the main substrate 1 can be realized. Without a complex structure, the adjustment is more convenient, the overall strength is greatly improved, and it can meet the stable use while realizing quick disassembly and assembly.

[0034] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any change or replacement that can be thought of without creative work should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims

1. A flexible and bendable holographic transparent screen, characterized in that: include: A main substrate (1) and at least two sub-substrates (2), wherein the at least two sub-substrates (2) are located on both sides of the main substrate (1), main back panels (9) are fixedly arranged on both sides of the back of the main substrate (1), and sub-back panels (6) are fixedly arranged on both sides of the back of each sub-substrate (2), and when spliced, the sub-back panels (6) on one side of the sub-substrate (2) are arranged closely against the main back panel (9) on one side of the main substrate (1), and a central fixed back panel (5) is fixedly arranged in the middle of the back of the main substrate (1); It also includes a lifting and clamping assembly, which is used to clamp the main back panel (9) and the auxiliary back panel (6) to complete the splicing and installation of the main base panel (1) and the auxiliary base panel (2); It also includes a splicing locking mechanism, which is arranged between the splicing positions of the main substrate (1) and the auxiliary substrate (2); A lifting arc driving mechanism is also provided between the lifting clamping assembly and the main back plate (9) and the auxiliary back plate (6). Through the lifting and lowering action of the lifting clamping assembly relative to the main substrate (1) and the auxiliary substrate (2), the automatic locking of the splicing locking mechanism and the automatic adjustment of the arc size between the auxiliary substrate (2) and the main substrate (1) are achieved.

2. The flexible and bendable holographic transparent screen according to claim 1, characterized in that: The lifting and clamping assembly comprises two clamping plates (15) and a connecting plate (3), wherein the connecting plate (3) is used to connect the clamping plates (15) on both sides, and each of the clamping plates (15) is provided with a clamping cavity, wherein the main back plate (9) and the auxiliary back plate (6) are inserted into the clamping cavity and clamped by the clamping plates (15), and an end travel gap cavity (16) is formed between the top surface of the clamping cavity and the top surfaces of the main substrate (1) and the auxiliary substrate (2), and the curvature of the auxiliary substrate (2) relative to the main substrate (1) is adjusted by reducing the travel gap cavity (16).

3. The flexible and bendable holographic transparent screen according to claim 2, characterized in that: The mating surfaces of the main back plate (9) and the auxiliary back plate (6) are smooth surfaces, and a sliding groove (20) is longitudinally provided on the opposite sides of the main back plate (9) and the auxiliary back plate (6), and a sliding block (18) is provided on the side of the clamping plate (15) opposite to the sliding groove (20), and the sliding block (18) is slidably buckled into the sliding groove (20); The sub-back panel (6) includes a first sub-back panel (62) (6) and a second sub-back panel (61) (6), the first sub-back panel (62) (6) and the main back panel (9) are spliced ​​together, a driving groove (19) is provided on the bottom surface of the slide groove (20) of the first sub-back panel (62) (6) from top to bottom, and a driving block (25) is provided at the top position of the sliding block (18) corresponding to the driving groove (19).

4. The flexible and bendable holographic transparent screen according to claim 3, characterized in that: The splicing locking mechanism comprises a locking insert (22), the locking insert (22) being movably arranged in an insert slot (24) provided in the first secondary back panel (62) (6), the insert slot (24) being open on one side opposite to the main substrate (1) and the secondary substrate (2), the splicing surfaces of the main substrate (1) and the secondary substrate (2) both form a splicing convex portion (32), a locking insert (29) being arranged on the splicing convex portion (32) on one side of the main substrate (1) opposite to the secondary substrate (2), a locking slot (31) being arranged on the secondary substrate (2) corresponding to the locking insert (29), the locking insert (29) being arranged on the secondary substrate (2) A first locking groove (28) is provided on one side of the locking plug (22), and a second locking groove (23) is provided on the secondary substrate (2) at a position corresponding to the first locking groove (28). When the main substrate (1) and the secondary substrate (2) are spliced, the locking plug (29) is inserted into the locking slot (31), and the first locking groove (28) is provided corresponding to the second locking groove (23). When the locking plug (22) is pushed out by the driving block (25) and inserted into the first locking groove (28) and the second locking groove (23), the locking of the splicing surface of the main substrate (1) and the secondary substrate (2) is completed.

5. The flexible and bendable holographic transparent screen according to claim 4, characterized in that: The locking insert (22) has an inclined driving surface (26) facing the driving block (25), and the driving block (25) is located at the top of the inclined driving surface (26) and contacts the inclined driving surface (26) on one side. When the travel gap cavity (16) is reduced, the locking insert (22) is pushed out by the driving block (25) and the locking insert (22) is inserted into the first locking groove (28) and the second locking groove (23). The locking plug (22) has a plurality of first track grooves parallel to the horizontal plane on both side surfaces, and the inner wall of the plug groove (24) is provided with a second track groove at a position corresponding to the first track groove, and balls are provided in the first track groove and the second track groove, and both sides of the locking plug (22) are in rolling contact with the plug groove (24) through the balls.

6. The flexible and bendable holographic transparent screen according to claim 3, characterized in that: The lifting arc driving mechanism comprises a first bracket (14) arranged on both sides of each clamping plate (15), and a magnetic attraction array (13) is arranged on each of the first brackets (14), and the magnetic attraction array (13) is located at the upper end of the first bracket (14); and a second bracket (7) arranged on one side of the second secondary back plate (61) (6), wherein the second bracket (7) is provided with a first magnetic block (8), the first magnetic block (8) is arranged at the bottom of the second bracket (7), and the first magnetic block (8) and the magnetic array (13) are arranged in a staggered manner; A third bracket (10) is respectively arranged on both sides of the central fixed back plate (5), and a second magnetic attraction block (12) is also arranged on the third bracket (10).

7. The flexible and bendable holographic transparent screen according to claim 6, characterized in that: The magnetic attraction array (13) includes one or more third magnetic attraction blocks with different magnetic attraction forces, wherein the third magnetic attraction block at the top has the largest magnetic force, and the magnetic force gradually decreases from top to bottom. The first magnetic attraction block (8) and the second magnetic attraction block (12) are attracted by switching the third magnetic attraction blocks at different height positions, so that the arc of the secondary substrate (2) can be adjusted relative to the main substrate (1).

8. The flexible and bendable holographic transparent screen according to claim 1, characterized in that: A fixing plate (4) is vertically arranged on the central fixing back plate (5), a supporting pad (17) is arranged on the back of the fixing plate (4), screw holes (11) are also arranged on the fixing plate (4), and the fixing plate (4) is fixed by screws.

9. The flexible and bendable holographic transparent screen according to claim 2, characterized in that: The clamping plate (15) is made of an elastic metal material, and when the main back plate (9) and the auxiliary back plate (6) are inserted into the clamping cavity, the clamping plate (15) is elastically stretched open.

10. The flexible and bendable holographic transparent screen according to claim 1, characterized in that: The main substrate (1) and the auxiliary substrate (2) are both provided with one or more penetrating ventilation holes, and lamp beads (30) are provided in the solid areas of the main substrate (1) and the auxiliary substrate (2).

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