A foldable 3D expansion display device and a method of using the same

Abstract

The application relates to the field of 3D display technology, in particular to a folding type 3D expansion display device and a use method thereof, which comprises a fixed plate, a 3D display screen is arranged in the fixed plate, and a storage assembly is arranged at the position corresponding to the 3D display screen of the fixed plate; a connecting assembly is used for connecting two adjacent fixed plates, and the connecting assembly comprises a hinged plate; a protection assembly is used for protecting the 3D display screen, and the protection assembly comprises a flexible baffle; the beneficial effect is that the multiple fixed plates can be fixed at the specified position to use the D expansion display; when folding, the fixed plate is disassembled, then a poking block is poked, the poking block drives a bearing block to move out from the third storage slot through a first pull rope, at the same time, an elastically arranged limiting block moves out from a first limiting slot, at this time, the two adjacent fixed plates are hinged, then one of the fixed plates is turned over to approach the other fixed plate, and the folding can be realized, the hydraulic cylinder and the supporting steel frame are not needed, the occupied space is small, the operation is simple, and the maintenance is simple.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of 3D display, in particular to a folding 3D expansion display device and a using method thereof. BACKGROUND

[0002] The 3D display device is a display device for generating stereoscopic vision by simulating binocular parallax;

[0003] In some street performances and other commercial performances, the performance place is not fixed, and it is time-consuming and laborious to temporarily set up a background display screen on site. In the prior art, a folding display screen and a naked-eye 3D expansion display screen are disclosed in Chinese Utility Model No. CN221300608U. The folding display screen is composed of a base, a supporting steel frame, a hydraulic device, a mechanical and electrical device, a first segmented screen, a second segmented screen, and a third segmented screen. The upper part of the base is provided with three screen body support frames, each of which is connected by a hydraulic cylinder. The three screens can be folded in turn, so that the folding display screen can be quickly unfolded to form a large display screen, and also has the function of folding and storing when use is finished. The naked-eye 3D expansion display screen includes two aforementioned folding display screens and a ground rail. One of the folding display screens is fixed on the main structure of the podium to ensure the safety of the folding screen to the greatest extent. The other folding display screen can be slid on the ground rail to change position according to actual location requirements. The naked-eye 3D expansion display screen is arranged on the top of the existing naked-eye 3D screen to expand it, and can be folded and stored when not in use.

[0004] In the above-mentioned technology, the folding and unfolding of the 3D expansion display device are realized by the deformation of the hydraulic cylinder and the supporting steel frame. However, the hydraulic cylinder and the supporting steel frame need a large space for deformation when folding and unfolding, and the above-mentioned folding display screen cannot be unfolded in some small spaces. SUMMARY

[0005] The present application aims to provide a folding 3D expansion display device and a using method thereof to solve the problems in the background art.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0007] A folding 3D expansion display device and a using method thereof, comprising:

[0008] A fixed plate is provided with a 3D display screen inside, and a storage assembly is arranged at the position corresponding to the 3D display screen of the fixed plate for storing the 3D display screen. The storage assembly includes a storage plate.

[0009] A connecting assembly is arranged to connect two adjacent groups of the fixing plates, and to unfold or fold the two adjacent groups of the fixing plates. The connecting assembly comprises a hinged plate.

[0010] A protection assembly is arranged to protect the 3D display screen. The protection assembly comprises a flexible baffle.

[0011] Further, a sink is arranged at a center of an end surface of the fixing plate, and the storage plate is arranged inside the sink.

[0012] A first receiving groove is arranged at a center of an end surface of the storage plate, and the 3D display screen is arranged inside the first receiving groove.

[0013] Further, a plurality of third return springs are arranged between a lower end of the storage plate and an inner bottom end of the sink, and the storage plate is elastically arranged inside the sink by the plurality of third return springs.

[0014] Both side walls of the storage plate are provided with guide blocks, and the inner side walls of the sink are provided with guide grooves corresponding to positions of the two groups of guide blocks, and the guide blocks are slidingly arranged inside the guide grooves.

[0015] Further, a first connecting groove and a second connecting groove are arranged at the two side walls of the fixing plate respectively, the hinged plate is arranged between the adjacent first connecting groove and second connecting groove, and the first connecting groove and the second connecting groove are provided with second accommodating grooves corresponding to positions of the hinged plate.

[0016] Both ends of the hinged plate are provided with two groups of symmetrically distributed insertion rods, an inner top end of the first connecting groove is provided with a counterbore corresponding to a position of the insertion rod, and the insertion rod is rotatably inserted into the counterbore.

[0017] An inner top end of the second connecting groove is provided with a first accommodating groove corresponding to a position of the other group of insertion rods, and the insertion rod is slidingly arranged inside the first accommodating groove.

[0018] Further, an end of the insertion rod is provided with a third receiving groove, an inner top end of the first accommodating groove is provided with a fourth receiving groove corresponding to a position of the third receiving groove, a resisting block is inserted into the fourth receiving groove, and a second return spring is arranged between an end of the resisting block and an inner top end of the fourth receiving groove.

[0019] The side wall of the fixed plate is provided with a recess at the position corresponding to the abutting block, a pulling block is slidably arranged in the recess, a through hole is arranged between the recess and the fourth receiving groove, a first pull rope is arranged in the through hole, and two ends of the first pull rope are connected with the end of the pulling block and the end of the abutting block respectively.

[0020] Further, a pressing block is insertedly arranged in the third receiving groove at the position corresponding to the abutting block, a second air bag is arranged between the end of the pressing block and the inner wall of the third receiving groove;

[0021] The end of another set of the inserting rods is provided with a second receiving groove, a limiting block is arranged in the second receiving groove, a first return spring is arranged between the end of the limiting block and the inner wall of the second receiving groove, and a first limiting groove is arranged in the inner wall of the counterbore at the position corresponding to the limiting block.

[0022] A first air bag is arranged between the end of the limiting block and the inner wall of the second receiving groove, and a first exhaust pipeline is arranged between the first air bag and the second air bag.

[0023] Further, a fifth receiving groove is arranged in the fixed plate at the position corresponding to the 3D display screen, and a flexible baffle is arranged in the fifth receiving groove.

[0024] A second limiting groove is arranged in the fixed plate at the position corresponding to the flexible baffle, and a guide plate is slidably arranged in the second limiting groove.

[0025] A fourth return spring is arranged between the end of the guide plate and the inner side wall of the second limiting groove, and the guide plate is elastically connected with the fixed plate through the fourth return spring.

[0026] Further, a third air bag is arranged between the lower end of the placing plate and the inner bottom end of the sink.

[0027] A fourth air bag is arranged between the other end of the guide plate and the inner side wall of the second limiting groove, and a second exhaust pipeline is arranged between the fourth air bag and the third air bag.

[0028] Further, a fifth air bag is arranged between the lower end of the guide block and the inner bottom end of the guide groove.

[0029] The inner side wall of the first giving slot is provided with a sixth receiving groove at the position corresponding to the inserting rod, a pressing plate is insertedly arranged in the sixth receiving groove, and a sixth air bag is arranged between the inner wall of the sixth receiving groove and the end of the pressing plate.

[0030] A third exhaust pipe is arranged between the sixth air bag and the fifth air bag.

[0031] Further, the use method comprises:

[0032] 3D expansion display device expansion: the adjacent two groups of fixed plates are connected through the hinged plate, in use, one group of fixed plates is turned over, the adjacent two groups of fixed plates are laid flat, after laying flat, the two groups of fixed plates are close to each other, at this time, the hinged plate moves to the inside of the second connecting groove, when the elastically arranged abutting block is inserted into the inside of the third storage groove, the hinged plate is fixedly connected with one group of fixed plates, at the same time, the elastically arranged abutting block abuts and extrudes the block, the block compresses the second air bag, the gas in the second air bag is exhausted to the inside of the first air bag through the first exhaust pipe, the first air bag expands, the limiting block is inserted into the inside of the first limiting groove, the hinged plate is fixedly connected with the other group of fixed plates, and then the two groups of fixed plates are fixedly connected;

[0033] 3D expansion display device extension: when the hinged plate moves towards the second connecting groove, the inserting rod extrudes the extruding plate, at this time, the gas in the sixth air bag on one side of the extruding plate is exhausted to the inside of the fifth air bag through the third exhaust pipe, the fifth air bag expands, the placing plate is driven to rise through the guide block, and then the 3D display screen extends out;

[0034] Protection assembly contraction: when the placing plate rises, the third air bag is no longer compressed, at this time, the guide plate moves under the action of the fourth reset spring, and the flexible baffle is stored into the inside of the fifth storage groove;

[0035] 3D expansion display device folding: the abutting block is moved out of the inside of the third storage groove through the first pull rope, at the same time, the elastically arranged limiting block is moved out of the inside of the first limiting groove through the first pull rope, at this time, the adjacent two groups of fixed plates are hinged, and then one group of fixed plates is turned over to be close to the other group of fixed plates, so that folding is realized.

[0036] Compared with the prior art, the beneficial effects of the present application are:

[0037] 1. A plurality of fixed plates are fixed at specified positions, and the D expansion display can be used, when folding, the fixed plates are disassembled, and then the abutting block is moved out of the inside of the third storage groove through the first pull rope, at the same time, the elastically arranged limiting block is moved out of the inside of the first limiting groove, at this time, the adjacent two groups of fixed plates are hinged, and then one group of fixed plates is turned over to be close to the other group of fixed plates, so that folding is realized, without hydraulic cylinders and supporting steel frames, the space occupied is small, the operation is simple, and maintenance is simple;

[0038] 2. When the fixed plates are folded, the inserting rod no longer extrudes the extruding plate, at this time, the placing plate moves downward under the action of the third reset spring, so that the end face of the D display screen is lower than the end face of the fixed plate, and then the protection of the end face of the D display screen is realized;

[0039] 3. When the storage plate moves downward, the third air bag will compress the gas inside, and the gas will be discharged to the fourth air bag through the second exhaust pipe, so that the fourth air bag expands and pushes the guide plate to move along the second limiting groove. When the guide plate moves, the flexible baffle covers the upper end of the D display screen, further protecting the D display screen. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 It is a schematic diagram of the three-dimensional structure of the application;

[0041] Figure 2 It is a schematic diagram of the three-dimensional structure of the application;

[0042] Figure 3 It is a schematic diagram of the three-dimensional structure of the application; Figure 2 It is an enlarged schematic diagram of the structure at A in the middle;

[0043] Figure 4 It is a schematic diagram of the three-dimensional structure of the application; Figure 3 It is an enlarged schematic diagram of the structure at B in the middle;

[0044] Figure 5 It is a schematic diagram of the three-dimensional structure of the application; Figure 3 It is an enlarged schematic diagram of the structure at C in the middle;

[0045] Figure 6 It is a schematic diagram of the three-dimensional structure of the application;

[0046] Figure 7 It is a schematic diagram of the three-dimensional structure of the application; Figure 6 It is an enlarged schematic diagram of the structure at D in the middle;

[0047] Figure 8 It is a schematic diagram of the three-dimensional structure of the application;

[0048] Figure 9 It is a schematic diagram of the three-dimensional structure of the application; Figure 8 It is an enlarged schematic diagram of the structure at E in the middle;

[0049] Figure 10 It is a schematic diagram of the three-dimensional structure of the application;

[0050] Figure 11 It is a schematic diagram of the three-dimensional structure of the application.

[0051] In the figure: fixed plate 1, sink 2, storage plate 3, first storage groove 4, 3D display screen 5, first connecting groove 6, hinged plate 7, second connecting groove 8, counterbore 9, first limiting groove 10, limiting block 11, second storage groove 12, first air bag 13, first return spring 14, first exhaust duct 15, first let go groove 16, plug rod 17, third storage groove 18, second air bag 19, extrusion block 20, fourth storage groove 21, abutting block 22, second return spring 23, through hole 24, first pull rope 25, groove 26, push block 27, third air bag 28, third return spring 29, second let go groove 30, guide groove 31, guide block 32, second exhaust duct 33, fifth storage groove 34, flexible baffle 35, guide plate 36, second limiting groove 37, fourth air bag 38, fourth return spring 39, fifth air bag 40, third exhaust duct 41, sixth storage groove 42, extrusion plate 43, sixth air bag 44. DETAILED DESCRIPTION

[0052] In order to more clearly illustrate the overall concept of the present application, the following will be described in detail in an exemplary manner in conjunction with the drawings. Example one:

[0053] Please refer to Figures 1 to 11 , the present application provides a technical solution: a folding 3D expansion display device and its use method, comprising:

[0054] The fixed plate 1 is provided with a 3D display screen 5 inside, and a storage assembly is arranged at the position corresponding to the 3D display screen 5 of the fixed plate 1, which is used to store the 3D display screen 5, and the storage assembly comprises a storage plate 3;

[0055] The connecting assembly is used to connect two adjacent groups of the fixed plate 1, so as to realize the unfolding and fixing or folding of the two adjacent groups of the fixed plate 1, and the connecting assembly comprises a hinged plate 7;

[0056] The protection assembly is used to protect the 3D display screen 5, and the protection assembly comprises a flexible baffle 35;

[0057] The connecting assembly is used to connect two adjacent groups of the fixed plate 1, so as to realize the splicing of two adjacent groups of the 3D display screen 5, in use, the fixed plate 1 is directly fixed to the specified position, and when folding is needed, the fixed plate 1 is removed from the specified position, and then the connecting assembly is used to fold the two adjacent groups of the fixed plate 1, and when folding, the 3D display screen 5 on the fixed plate 1 can be protected by the protection assembly. Example two:

[0058] As Figures 6-7 shown, the folding 3D expansion display device and its use method disclosed in the embodiment two of the present application have basically the same structure as the embodiment one, and the difference lies in that:

[0059] A recessed groove 2 is provided at the center of the end face of the fixing plate 1, and the placement plate 3 is disposed inside the recessed groove 2;

[0060] The center of the end face of the shelf 3 is provided with a first storage slot 4, and the 3D display screen 5 is installed inside the first storage slot 4.

[0061] Multiple sets of spaced third return springs 29 are provided between the lower end of the shelf 3 and the inner bottom of the sink 2, and the shelf 3 is elastically disposed inside the sink 2 by the multiple sets of third return springs 29.

[0062] Guide blocks 32 are installed on both sides of the shelf 3. Guide grooves 31 are opened on the inner side wall of the sink 2 at the positions of the two sets of guide blocks 32. The guide blocks 32 are slidably disposed inside the guide grooves 31.

[0063] The 3D display screen 5 is stored by the cooperation of the fixing plate 1 and the shelf 3, while the third reset spring 29 can buffer the 3D display screen 5. Example 3:

[0064] like Figures 2-5 As shown, the foldable 3D extended display device and its usage method disclosed in Embodiment 3 of the present invention have a structure that is basically the same as that in Embodiment 2, except that:

[0065] The two side walls of the fixing plate 1 are respectively provided with a first connecting groove 6 and a second connecting groove 8. The hinge plate 7 is disposed between adjacent first connecting groove 6 and second connecting groove 8, and the first connecting groove 6 and the second connecting groove 8 are respectively provided with a second clearance groove 30 at the position corresponding to the hinge plate 7.

[0066] Two sets of symmetrically distributed insert rods 17 are provided at both ends of the hinge plate 7. A countersunk hole 9 is provided at the top of the first connecting groove 6 corresponding to the position of the insert rod 17. The insert rod 17 is rotatably inserted into the countersunk hole 9.

[0067] The second connecting groove 8 has a first clearance groove 16 at the top of its interior corresponding to the position of another set of the insert rods 17, and the insert rods 17 are slidably disposed inside the first clearance groove 16;

[0068] The hinge plate 7 connects two adjacent sets of fixed plates 1. Since the distance between the two sets of fixed plates 1 when unfolded is different from the distance between the two sets of fixed plates 1 when folded, the hinge plate 7 is set to slide to one of the sets of fixed plates 1. Example 4:

[0069] As Figures 2-5 shown in the folding 3D expansion display device and the using method thereof disclosed in embodiment four of the present application, the structure thereof is basically the same as that in embodiment three, and the difference is that:

[0070] The end of the inserting rod 17 is provided with a third receiving groove 18, the inner top of the first allowing slot 16 is provided with a fourth receiving groove 21 at the position corresponding to the third receiving groove 18, the fourth receiving groove 21 is provided with a resisting block 22 inserted therein, and a second reset spring 23 is arranged between the end of the resisting block 22 and the inner top of the fourth receiving groove 21;

[0071] The side wall of the fixed plate 1 is provided with a recess 26 at the position corresponding to the resisting block 22, the recess 26 is provided with a pushing block 27 slidingly arranged therein, and a through hole 24 is arranged between the inner part of the recess 26 and the inner part of the fourth receiving groove 21, the through hole 24 is provided with a first pulling rope 25, and the two ends of the first pulling rope 25 are connected with the end of the pushing block 27 and the end of the resisting block 22 respectively.

[0072] The third receiving groove 18 is provided with an extruding block 20 inserted therein at the position corresponding to the resisting block 22, and a second air bag 19 is arranged between the end of the extruding block 20 and the inner wall of the third receiving groove 18;

[0073] The end of another set of inserting rod 17 is provided with a second receiving groove 12, the second receiving groove 12 is provided with a limiting block 11 arranged therein, and a first reset spring 14 is arranged between the end of the limiting block 11 and the inner wall of the second receiving groove 12, and the inner wall of the counterbore 9 is provided with a first limiting slot 10 at the position corresponding to the limiting block 11;

[0074] A first air bag 13 is arranged between the end of the limiting block 11 and the inner wall of the second receiving groove 12, and a first exhaust pipeline 15 is arranged between the first air bag 13 and the second air bag 19;

[0075] In use, one of the fixed plates 1 is turned over, and the adjacent two fixed plates 1 are laid flat, and then the two fixed plates 1 are close to each other, at this time, the hinged plate 7 will move to the inside of the second connecting slot 8, when the elastically arranged resisting block 22 is inserted into the inside of the third receiving groove 18, the hinged plate 7 is fixedly connected with one of the fixed plates 1, at the same time, the elastically arranged resisting block 22 downwardly abuts against the extruding block 20, the extruding block 20 compresses the second air bag 19, the gas in the second air bag 19 is exhausted to the inside of the first air bag 13 through the first exhaust pipeline 15, the first air bag 13 expands, the limiting block 11 is inserted into the inside of the first limiting slot 10, the hinged plate 7 is fixedly connected with the other fixed plate 1, and then the two fixed plates 1 are fixedly connected. Embodiment five:

[0076] As Figures 6-7 shown, the folding 3D expansion display device and the using method thereof disclosed in embodiment five of the present application are basically same as those in embodiment four, and the difference is that:

[0077] The inside of the fixed plate 1 is provided with a fifth receiving groove 34 at the position corresponding to the 3D display screen 5, and the inside of the fifth receiving groove 34 is provided with a flexible baffle 35;

[0078] The inside of the fixed plate 1 is provided with a second limiting groove 37 at the position corresponding to the flexible baffle 35, and the inside of the second limiting groove 37 is slidably provided with a guide plate 36;

[0079] The end of the guide plate 36 and the inner side wall of the second limiting groove 37 are provided with a fourth return spring 39, and the guide plate 36 is elastically connected with the fixed plate 1 through the fourth return spring 39;

[0080] The lower end of the storage plate 3 and the inner bottom end of the sink 2 are provided with a third air bag 28;

[0081] The other end of the guide plate 36 and the inner side wall of the second limiting groove 37 are provided with a fourth air bag 38, and the second air exhaust duct 33 is provided between the third air bag 28 and the fourth air bag 38;

[0082] The lower end of the guide block 32 and the inner bottom end of the guide groove 31 are provided with a fifth air bag 40;

[0083] The inner side wall of the first giving-up groove 16 is provided with a sixth receiving groove 42 at the position corresponding to the insertion rod 17, the inside of the sixth receiving groove 42 is insertedly provided with an extrusion plate 43, and the inner wall of the sixth receiving groove 42 and the end of the extrusion plate 43 are provided with a sixth air bag 44;

[0084] The third air exhaust duct 41 is provided between the sixth air bag 44 and the fifth air bag 40;

[0085] When the hinged plate 7 moves towards the second connecting groove 8, the insertion rod 17 will extrude the extrusion plate 43, at this time, the gas in the sixth air bag 44 on one side of the extrusion plate 43 is exhausted to the inside of the fifth air bag 40 through the third air exhaust duct 41, the fifth air bag 40 is expanded, the storage plate 3 is driven to rise through the guide block 32, and then the 3D display screen 5 is extended;

[0086] At the same time, when the storage plate 3 rises, the third air bag 28 is no longer compressed, at this time, the guide plate 36 moves under the action of the fourth return spring 39, and the flexible baffle 35 is received into the inside of the fifth receiving groove 34

[0087] The specific scheme is: when the 3D display screen 5 needs to be folded, the fixed plate 1 is first disassembled, then the push block 27 is pushed, the push block 27 drives the abutting block 22 to move out from the third storage slot 18 through the first pull rope 25, at the same time, the limiting block 11 arranged elastically is moved out from the first limiting slot 10, at this time, the adjacent two groups of fixed plates 1 are hinged, then one group of fixed plates 1 is turned to the other group of fixed plates 1 to realize folding;

[0088] When the fixed plate 1 is folded, the inserting rod 17 no longer extrudes the extrusion plate 43, at this time, the storage plate 3 is moved downward under the action of the third reset spring 29, so that the end surface of the 3D display screen 5 is lower than the end surface of the fixed plate 1, and the protection of the end surface of the 3D display screen 5 is realized, and when the storage plate 3 is moved downward, the gas in the third air bag 28 is compressed, the gas in the third air bag 28 is discharged to the inside of the fourth air bag 38 through the second exhaust pipeline 33, the fourth air bag 38 is inflated, and the guide plate 36 is moved along the second limiting slot 37, when the guide plate 36 is moved, the flexible baffle 35 is driven to cover the upper end of the 3D display screen 5, and the protection of the 3D display screen 5 is further realized.

[0089] The present application is intended to cover all such alternatives, modifications, and variations that fall within the broad scope of the appended claims. Accordingly, any and all such modifications, variations, omissions, and equivalents should be considered within the scope of the present application.

Claims

1. A foldable 3D extended display device, characterized in that, include: A fixing plate, wherein a 3D display screen is disposed inside the fixing plate, and a storage component is disposed on the fixing plate at a position corresponding to the 3D display screen for storing the 3D display screen, the storage component including a shelf; A connecting component is used to connect two adjacent sets of the fixing plates, so as to enable the two adjacent sets of the fixing plates to be unfolded and fixed or folded. The connecting component includes a hinge plate. A protective component for protecting the 3D display screen, the protective component including a flexible baffle; The two side walls of the fixing plate are respectively provided with a first connecting groove and a second connecting groove. The hinge plate is disposed between adjacent first connecting grooves and second connecting grooves, and the first connecting groove and the second connecting groove are respectively provided with a second clearance groove at the position corresponding to the hinge plate. Two sets of symmetrically distributed insert rods are provided at both ends of the hinge plate. A countersunk hole is opened at the top of the first connecting groove corresponding to the position of the insert rod. The insert rod is rotatably inserted into the countersunk hole. The second connecting groove has a first clearance groove at the top of its interior corresponding to the position of another set of the plug rods, and the plug rods are slidably disposed inside the first clearance groove; The end of the insertion rod is provided with a third storage groove, and the top of the first clearance groove is provided with a fourth storage groove at the position corresponding to the third storage groove. A support block is inserted into the inside of the fourth storage groove, and a second return spring is provided between the end of the support block and the top of the inside of the fourth storage groove. The side wall of the fixing plate is provided with a groove corresponding to the position of the abutment block. A lever is slidably disposed inside the groove, and a through hole is provided between the inside of the groove and the inside of the fourth storage groove. A first pull rope is disposed inside the through hole, and the two ends of the first pull rope are respectively connected to the end of the lever and the end of the abutment block. A compression block is inserted into the interior of the third storage slot at a position corresponding to the support block, and a second airbag is provided between the end of the compression block and the inner wall of the third storage slot. Another set of the insertion rods has a second storage groove at its end. The second storage groove is provided with a limiting block inside. A first reset spring is provided between the end of the limiting block and the inner wall of the second storage groove. The inner wall of the countersunk hole is provided with a first limiting groove at the position of the limiting block. A first airbag is provided between the end of the limiting block and the inner wall of the second storage groove, and a first exhaust pipe is provided between the first airbag and the second airbag. A recessed groove is provided at the center of the end face of the fixing plate, and the placement plate is disposed inside the recessed groove; Guide blocks are installed on both side walls of the shelf, and guide grooves are formed on the inner side wall of the sink corresponding to the positions of the two sets of guide blocks. The guide blocks are slidably disposed inside the guide grooves. The fixed plate has a second limiting groove at a position corresponding to the flexible baffle, and a guide plate is slidably arranged inside the second limiting groove; A third airbag is provided between the lower end of the shelf and the inner bottom of the sink. A fourth airbag is provided between the other end of the guide plate and the inner sidewall of the second limiting groove, and a second exhaust pipe is provided between the fourth airbag and the third airbag. A fifth airbag is provided between the lower end of the guide block and the inner bottom of the guide groove; A sixth storage slot is provided on the inner side wall of the first clearance slot at the position corresponding to the insertion rod. A compression plate is inserted into the interior of the sixth storage slot, and a sixth airbag is provided between the inner wall of the sixth storage slot and the end of the compression plate. A third exhaust pipe is provided between the sixth airbag and the fifth airbag.

2. The foldable 3D extended display device according to claim 1, characterized in that, The storage plate has a first storage slot at the center of its end face, and the 3D display screen is installed inside the first storage slot.

3. The foldable 3D extended display device according to claim 1, characterized in that, Multiple sets of spaced third return springs are provided between the lower end of the placement plate and the inner bottom of the sink. The placement plate is elastically positioned inside the sink by the multiple sets of third return springs.

4. The foldable 3D extended display device according to claim 1, characterized in that, The fixed plate has a fifth storage slot at the position corresponding to the 3D display screen, and the fifth storage slot is provided with a flexible baffle. A fourth reset spring is provided between the end of the guide plate and the inner sidewall of the second limiting groove, and the guide plate is elastically connected to the fixed plate through the fourth reset spring.

5. A method of using a foldable 3D extended display device, characterized in that, Including the foldable 3D extended display device as described in claim 4, the method of using it includes: Deployment of the 3D extended display device: The hinge plate connects two adjacent sets of fixed plates. In use, one set of fixed plates is flipped so that the two sets of fixed plates are laid flat. After being laid flat, the two sets of fixed plates move closer to each other. At this time, the hinge plate will move into the second connecting groove. When the elastically set abutment block is inserted into the third storage groove, the hinge plate is fixedly connected to one set of fixed plates. At the same time, the elastically set abutment block presses down against the compression block. The compression block compresses the second airbag. The gas inside the second airbag is discharged into the first airbag through the first exhaust pipe. The first airbag expands, so that the limiting block is inserted into the first limiting groove, thereby fixing the hinge plate to the other set of fixed plates, and thus fixing the two sets of fixed plates to each other. Extension of the 3D extended display device: When the hinge plate moves toward the second connecting groove, the insert rod will squeeze the extrusion plate. At this time, the gas inside the sixth airbag on one side of the extrusion plate will be discharged into the fifth airbag through the third exhaust pipe. The fifth airbag will expand and drive the placement plate to rise through the guide block, thereby extending the 3D display screen. Retraction of protective components: When the shelf rises, the third airbag is no longer compressed. At this time, the guide plate moves under the action of the fourth return spring, and the flexible baffle is stored inside the fifth storage slot. Folding of the 3D extended display device: Move the lever, and the lever will move the abutment block out of the third storage slot through the first pull rope. At the same time, the elastically set limiting block will move out of the first limiting slot. At this time, the two adjacent sets of fixing plates will be hinged. Then, flip one set of fixing plates to move closer to the other set of fixing plates to achieve folding.

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