Display device

Abstract

The invention provides a display device which further comprises a supporting assembly, and the supporting assembly comprises a supporting body, a first supporting part and an air compression assembly. Gas is injected into the first rodless cavity through the air compression assembly, the first supporting part moves in the first direction so as to drive the display screen located in the first containing space to be spread on the first supporting piece, the air compression assembly injects gas into the first rod cavity, the first supporting part moves away from the first direction, and the first rotating piece rotates so as to drive the display screen located in the first containing space to be spread on the first supporting piece. Therefore, the display screen located on the first supporting piece is driven to be retracted into the first containing space, and the size of the display area is changed. The display device does not have a gap, so that the display device can be applied to a small-size display screen. According to the display device, the defect that gaps exist between spliced display screens in the prior art is overcome, the display area of a small-size display screen is achieved, and the display device can be used for meeting the requirements for different display sizes.

Description

Technical Field

[0001] This application relates to the field of display technologies, and in particular, to a display device. Background Art

[0002] With the rapid development of display technologies, display technologies such as foldable screens that can change the display area have emerged. Currently, display technologies that can change the display area are mainly applied to large-sized display devices, and large-sized display devices often achieve the change of the display area by splicing multiple display screens. However, the method of splicing multiple display screens usually results in gaps between the spliced display screens and is not applicable to small-sized display screens.

[0003] Therefore, how to avoid the gaps between the spliced display screens in the prior art and enable the display area of small-sized display screens to be variable is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0004] In view of the above deficiencies of the prior art, the purpose of this application is to provide a display device, which can not only solve the defect of gaps between the spliced display screens in the prior art, but also enable the display area of small-sized display screens to be variable, thus meeting the requirements of different display sizes.

[0005] To solve the above technical problems, an embodiment of this application provides a display device, and the display device includes a display screen for displaying a picture. The display device further includes a support assembly, and the support assembly includes a support main body, a first support portion, and an air compression assembly. The support main body is provided with an air cavity and a first air chamber, and the air cavity and the first air chamber are arranged at intervals. The first support portion includes a first support member, a first piston group, and a first rotating member. The first support member is provided with a first accommodating space, the first rotating member is arranged in the first accommodating space, the first piston group is fixed to one side of the first support member, and the first support member is arranged on the support main body. The first piston group is arranged in the first air chamber, and the first piston group divides the first air chamber into a first rod chamber and a first rodless chamber, and the air cavity is selectively communicated with the first rod chamber or the first rodless chamber. The air compression assembly is arranged in the air cavity. Wherein, the display screen is arranged on the support main body, on the first support member, and in the first accommodating space, the display screen is wound around the first rotating member, the air compression assembly injects gas into the first rodless chamber, and the first support portion moves towards a first direction to drive the display screen located in the first accommodating space to spread onto the first support member. The air compression assembly injects gas into the first rod chamber, and the first support portion moves away from the first direction, causing the first rotating member to rotate, so as to drive the display screen located on the first support member to retract into the first accommodating space.

[0006] In summary, in the display device provided by the embodiment of the present application, gas is injected into the first rodless cavity through the air compression assembly, and the first support portion moves in the first direction to drive the display screen located in the first accommodation space to spread onto the first support member. The air compression assembly injects gas into the first rod cavity, and the first support portion moves away from the first direction, and the first rotating member rotates to drive the display screen located on the first support member to retract into the first accommodation space, so as to realize the change of the display area. Moreover, there is no gap in the display device, so that the display device can be applied to small-sized display screens. Therefore, the display device of the present application not only solves the defect of the gap between the spliced display screens in the prior art, but also realizes the display area of the small-sized display screen, and can be used for different display size requirements.

[0007] In an exemplary embodiment, the support assembly further includes a first magnet, and the first magnet is disposed on the bottom wall of the first air chamber, and the first magnet magnetically attracts the first piston group.

[0008] In an exemplary embodiment, the first support portion further includes a first air nozzle, and the first air nozzle is disposed in the first accommodation space. The first support portion is provided with a first gas passage, and the first gas passage is respectively communicated with the first accommodation space and the surface of the first piston group. The first air nozzle is used to blow air to the first rotating member to drive the first rotating member to rotate.

[0009] In an exemplary embodiment, a second air chamber is formed in the support body, and the second air chamber is spaced from the first air chamber and the air cavity respectively. The support assembly further includes a second support portion, which includes a second support member, a second piston group and a second rotating member. A second accommodation space is formed in the second support member, and the second rotating member is disposed in the second accommodation space. The second piston group is fixed to one side of the second support member, and the second support member is disposed on the support body, and the second piston group is disposed in the second air chamber. The second piston group divides the second air chamber into a second rod chamber and a second rodless chamber, and the air cavity is selectively communicated with the second rod chamber or the second rodless chamber. Wherein, the display screen is disposed on the support body, on the second support member and in the second accommodation space, and the display screen is wound around the second rotating member. The air compression assembly injects gas into the second rodless chamber, and the second support portion moves away from the first direction to drive the display screen in the second accommodation space to spread onto the second support member. The air compression assembly injects gas into the second rod chamber, and the second support portion moves toward the first direction, causing the second rotating member to rotate, so as to drive the display screen on the second support member to retract into the second accommodation space.

[0010] In an exemplary embodiment, the support assembly further includes a second magnet, which is disposed on the bottom wall of the second air chamber, and the second magnet magnetically attracts the second piston group.

[0011] In an exemplary embodiment, the second support portion further includes a second air nozzle, which is disposed in the second accommodation space. The second support portion is provided with a second gas passage, and the second gas passage is respectively communicated with the second accommodation space and the surface of the second piston group. The second air nozzle is used to blow air to the second rotating member to drive the second rotating member to rotate.

[0012] In an exemplary embodiment, the support body is provided with a first air passage, a second air passage and a connecting air passage. The first air passage is respectively communicated with the air cavity, the first rodless chamber and the second rodless chamber. The second air passage is respectively communicated with the air cavity and the second rod chamber. The connecting air passage is respectively communicated with the first rod chamber and the second rod chamber. The support assembly further includes a first switching valve and a second switching valve. The first switching valve is disposed in the first air passage, and the second switching valve is disposed in the second air passage. The first switching valve and the second switching valve are not simultaneously turned on.

[0013] In an exemplary embodiment, the air compression assembly includes an electromagnet, a magnetic member, an elastic member, and a one-way valve. The electromagnet is disposed on the bottom wall of the air chamber, the one-way valve is disposed at the opening of the air chamber, the magnetic member and the elastic member are disposed between the electromagnet and the one-way valve, the magnetic member and the elastic member are fixedly connected, and the elastic member is fixedly connected to the side wall of the air chamber. The electromagnet is configured to intermittently form a magnetic field to drive the magnetic member to reciprocate in the air chamber.

[0014] In an exemplary embodiment, the support assembly further includes a first pressure sensor and a second pressure sensor. The first pressure sensor is disposed at the opening of the first air chamber, and the second pressure sensor is disposed at the opening of the second air chamber. The first pressure sensor is configured to detect the position of the first piston group in the first air chamber, and the second pressure sensor is configured to detect the position of the second piston group in the second air chamber.

[0015] In an exemplary embodiment, the display device further includes a control unit. The control unit is also electrically connected to the electromagnet, and the control unit is configured to intermittently supply power to the electromagnet. The control unit is also electrically connected to the first pressure sensor, the second pressure sensor, the first switching valve, and the second switching valve respectively. When the first pressure sensor does not detect the first piston group and the second pressure sensor does not detect the second piston group, the control unit controls the first switching valve to open and controls the second switching valve to close. When the first pressure sensor detects the first piston group and the second pressure sensor detects the second piston group, the control unit controls the first switching valve to close and controls the second switching valve to open. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 is a top view structural schematic diagram of the display device disclosed in the embodiment of the present application in a first display state;

[0018] Figure 2 is Figure 1 the first cross-sectional structural schematic diagram of the shown display device along the I-I direction;

[0019] Figure 3 is Figure 2 the structural schematic diagram of the shown support body;

[0020] Figure 4 is Figure 2 a schematic structural view of the first support part shown;

[0021] Figure 5 is Figure 2 a schematic structural view of the second support part shown;

[0022] Figure 6 a top - view structural schematic of the display device disclosed in the embodiment of the present application in the second display state;

[0023] Figure 7 is Figure 6 a first cross - sectional structural schematic of the display device shown along the II - II direction;

[0024] Figure 8 is Figure 1 a second cross - sectional structural schematic of the display device shown along the I - I direction;

[0025] Figure 9 is Figure 6 a second cross - sectional structural schematic of the display device shown along the II - II direction;

[0026] Figure 10 is Figure 1 a third cross - sectional structural schematic of the display device shown along the I - I direction;

[0027] Figure 11 is Figure 6 a third cross - sectional structural schematic of the display device shown along the II - II direction.

[0028] Explanation of reference numerals:

[0029] 1 - Display device; 10 - Display screen; 20 - Support component; 30 - Frame; 50 - Control unit; 60 - Power supply; 100 - Support body; 101 - Main support surface; 102 - Air cavity; 103 - First air chamber; 103a - First rod - equipped cavity; 103b - First rodless cavity; 104 - Second air chamber; 104a - Second rod - equipped cavity; 104b - Second rodless cavity; 105 - First air duct; 106 - Second air duct; 107 - Connecting air duct; 108 - First abutting hole; 109 - Second abutting hole; 200 - First support part; 201 - First gas channel; 210 - First support member; 211 - First support surface; 212 - First accommodating space; 213 - First air outlet channel; 214 - First accommodating groove; 220 - First piston group; 230 - First abutting member; 240 - First rotating member; 250 - First air nozzle; 260 - First pressure valve; 280 - First telescopic member; 300 - Second support part; 301 - Second gas channel; 310 - Second support member; 311 - Second support surface; 312 - Second accommodating space; 313 - Second air outlet channel; 314 - Second accommodating groove; 320 - Second piston group; 330 - Second abutting member; 340 - Second rotating member; 350 - Second air nozzle; 360 - Second pressure valve; 380 - Second telescopic member; 400 - Air compression component; 410 - Electromagnet; 420 - Magnetic part; 430 - Elastic part; 440 - Check valve; 510 - First switching valve; 520 - Second switching valve; 530 - First magnet; 540 - Second magnet; 550 - First pressure sensor; 560 - Second pressure sensor; 610 - First gear; 620 - First rack; 630 - First connecting member; 710 - Second gear; 720 - Second rack; 730 - Second connecting member. Detailed implementation manner

[0030] For the convenience of understanding this application, the following will describe this application more comprehensively with reference to the relevant drawings. The preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this application more thorough and comprehensive.

[0031] The following description of each embodiment refers to the accompanying drawings for illustrating specific embodiments in which the present application can be implemented. The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any sequential or technical meaning. The directional terms mentioned in the present application, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", etc., are only with reference to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer description and understanding of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0032] In the description of the present application, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. "Movable connection" means that the components are connected and can move relative to each other after connection. "Sliding connection" means that the components are connected and can slide relative to each other after connection. "Rotational connection" means that the components are connected and can rotate relative to each other after connection. "Magnetic connection" means that the components are magnetically attracted and in contact with each other. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0033] It should be noted that the terms "first", "second", etc. in the description, claims, and drawings of the present application are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "include", "may include", "comprise", or "may comprise" used in the present application indicate the existence of the corresponding functions, operations, elements, etc. disclosed, and do not limit the existence of one or more other functions, operations, elements, etc. Moreover, the term "include" or "comprise" means the existence of the corresponding features, numbers, steps, operations, elements, components, or combinations thereof disclosed in the specification, and does not exclude the existence or addition of one or more other features, numbers, steps, operations, elements, components, or combinations thereof, and is intended to cover non-exclusive inclusion. It should also be understood that the meaning of "at least one" described herein is one or more, such as one, two, or three, etc., and the meaning of "a plurality" is at least two, such as two or three, etc., unless otherwise specifically defined.

[0034] The terms "parallel", "perpendicular", etc. are defined in the context of the current technological level, rather than the absolutely strict definitions in the mathematical sense. A small deviation is allowed, and being approximately parallel, approximately perpendicular, etc. are all acceptable. For example, when A is parallel to B, it means that A is parallel or approximately parallel to B, and the included angle between A and B can be between 0 degrees and 5 degrees. Another example, when A is perpendicular to B, it means that A is perpendicular or approximately perpendicular to B, and the included angle between A and B can be between 85 degrees and 95 degrees.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0036] Please refer to Figure 1 and Figure 2 , Figure 1 is a schematic top view structure diagram of the display device disclosed in the embodiment of this application in the first display state. Figure 2 is Figure 1 the first cross-sectional schematic structure diagram of the display device shown along the I-I direction. As Figure 1 shown, the display area of the display device 1 in the first display state is relatively small. The display device 1 includes a display screen 10, a support assembly 20, and a frame 30. Part of the display screen 10 is disposed on the surface of the support assembly 20, and part of the display screen 10 is disposed inside the support assembly 20. The ratio of the area of the display screen 10 on the surface of the support assembly 20 to the area of the display screen 10 inside the support assembly 20 is variable, that is, the display area of the display device 1 can be increased or decreased. The frame 30 is disposed on the periphery of the display screen 10 on the surface of the support assembly 20 to protect the display screen 10. Among them, the display screen 10 is an OLED display screen.

[0037] For convenience of description, the length direction of the display device 1 is defined as the X-axis direction, the width direction of the display device 1 is defined as the Y-axis direction, and the thickness direction of the display device 1 is defined as the Z-axis direction. Among them, the X-axis direction, the Y-axis direction, and the Z-axis direction are perpendicular to each other in pairs. It can also be that the width direction of the display device 1 is the X-axis direction, and the length direction of the display device 1 is defined as the Y-axis direction. The X-axis direction is defined as the first direction.

[0038] In the embodiments of this application, please refer to Figure 2, the support assembly 20 includes a support body 100, a first support portion 200, a second support portion 300, and an air compression assembly 400. The air compression assembly 400 is disposed inside the support body 100. The first support portion 200 and the second support portion 300 are spaced apart. Both the first support portion 200 and the second support portion 300 are disposed on the support body 100, with part of the first support portion 200 disposed inside the support body 100 and part of the second support portion 300 disposed inside the support body 100.

[0039] Please refer to Figure 3 , Figure 3 for Figure 2 the structural schematic diagram of the support body shown. The support body 100 includes a main support surface 101, and the main support surface 101 faces the Z-axis direction. The support body 100 is provided with an air cavity 102, a first air chamber 103, a second air chamber 104, a first air passage 105, and a second air passage 106.

[0040] The depth direction of the air cavity 102 is the Z-axis direction. The air cavity 102 is an overall stepped hole, that is, the diameter of the air cavity 102 varies in its depth direction. The opening of the air cavity 102 faces away from the Z-axis direction.

[0041] The depth directions of both the first air chamber 103 and the second air chamber 104 are the X-axis direction. Both the first air chamber 103 and the second air chamber 104 are cylindrical cavities with openings. The first air chamber 103 and the second air chamber 104 are spaced apart. The opening of the first air chamber 103 faces the X-axis direction, and the opening of the second air chamber 104 faces the opposite direction of the X-axis. The opposite direction of the X-axis is opposite to the X-axis direction, that is, the openings of the first air chamber 103 and the second air chamber 104 face away from each other. The positions of the first air chamber 103 and the second air chamber 104 are at the same height. The first air chamber 103 and the second air chamber 104 are also respectively spaced apart from the air cavity 102, and the heights of the positions where the first air chamber 103 and the second air chamber 104 are located are both higher than the height of the position where the air cavity 102 is located, that is, both the first air chamber 103 and the second air chamber 104 are located along the Z-axis direction above the air cavity 102.

[0042] The first air passage 105 and the second air passage 106 are arranged at intervals. The heights of the positions where the first air passage 105 and the second air passage 106 are located are both lower than the height of the position where the first air chamber 103 is located, that is, the first air chamber 103 is located above the first air passage 105 and the second air passage 106 in the Z-axis direction. The first air passage 105 extends in a bent manner inside the support body 100, and the second air passage 106 extends in a bent manner inside the support body 100. The first air passage 105 is respectively communicated with the air cavity 102, the first air chamber 103, and the second air chamber 104, and the second air passage 106 is respectively communicated with the air cavity 102 and the second air chamber 104.

[0043] In an exemplary embodiment, the support body 100 is further provided with a connecting air passage 107. The height of the position where the connecting air passage 107 is located is higher than the height of the position where the first air chamber 103 is located, that is, the connecting air passage 107 is located above the first air chamber 103 in the Z-axis direction. The connecting air passage 107 is respectively communicated with the first air chamber 103 and the second air chamber 104.

[0044] In an embodiment of the present application, the support body 100 is further provided with a first abutting hole 108 and a second abutting hole 109. The depth directions of the first abutting hole 108 and the second abutting hole 109 are the X-axis direction. Both the first abutting hole 108 and the second abutting hole 109 are cylindrical holes or prismatic holes. The first abutting hole 108 and the second abutting hole 109 are arranged at intervals. The opening of the first abutting hole 108 faces the X-axis direction, and the opening of the second abutting hole 109 faces the opposite direction of the X-axis. The heights of the positions where the first abutting hole 108 and the second abutting hole 109 are located are the same.

[0045] The heights of the positions where the first abutting hole 108 and the second abutting hole 109 are located are both higher than the height of the position where the air cavity 102 is located. The height of the position where the first abutting hole 108 is located is lower than the height of the position where the first air chamber 103 is located, that is, the first abutting hole 108 and the second abutting hole 109 are both located above the air cavity 102 in the Z-axis direction, and the first abutting hole 108 is located below the first air chamber 103 in the Z-axis direction. The positive projection of the first abutting hole 108 in the Z-axis direction overlaps with the positive projection of the first air chamber 103 in the Z-axis direction. The height of the position where the second abutting hole 109 is located is lower than the height of the position where the second air chamber 104 is located. The positive projection of the second abutting hole 109 in the Z-axis direction overlaps with the positive projection of the second air chamber 104 in the Z-axis direction, that is, the second abutting hole 109 is located below the second air chamber 104 in the Z-axis direction.

[0046] Please refer to Figure 4 ,Figure 4 The Figure 2 structural schematic diagram of the first support part shown. The first support part 200 includes a first support member 210, a first piston group 220 and a first abutting member 230. Figure 4 The connection positions between the first support member 210 and the first piston group 220 and between the first support member 210 and the first abutting member 230 are shown by dashed lines in the figure.

[0047] The first abutting member 230 and the first piston group 220 are arranged in sequence and spaced along the Z-axis direction. The first piston group 220 and the first abutting member 230 are arranged on one side of the first support member 210 facing the opposite direction of the X-axis. The first piston group 220 is fixedly connected to the first support member 210, and the first abutting member 230 is fixedly connected to the first support member 210.

[0048] The first support member 210 includes a first support surface 211, and the first support surface 211 is the surface of the first support member 210 facing the Z-axis direction. The first support member 210 is provided with a first accommodation space 212, and the first accommodation space 212 has an opening, and the first support surface 211 extends to the opening of the first accommodation space 212.

[0049] The first support part 200 further includes a first rotating member 240. The first rotating member 240 is arranged in the first accommodation space 212, and the first rotating member 240 can rotate in the first accommodation space 212. The first rotating member 240 can be composed of a rotating shaft and an impeller. The axial direction of the rotating shaft is parallel to the Y-axis direction, and the impeller is sleeved on the rotating shaft.

[0050] The first support part 200 further includes a first air nozzle 250. The first air nozzle 250 is arranged in the first accommodation space 212. The first support part 200 is provided with a first gas channel 201, and the first gas channel 201 is respectively communicated with the first accommodation space 212 and the surface of the first piston group 220, that is, the first accommodation space 212 is communicated to the surface of the first piston group 220 through the first gas channel 201.

[0051] The first support member 210 is provided with a first air outlet channel 213, and the first air outlet channel 213 is respectively communicated with the first accommodation space 212 and the outside.

[0052] The first support portion 200 further includes a first pressure valve 260, and the first pressure valve 260 is disposed in the first air outlet passage 213. When the air pressure in the first accommodation space 212 is greater than the threshold air pressure of the first pressure valve 260, the first pressure valve 260 opens, and the gas in the first accommodation space 212 is discharged through the first air outlet passage 213. When the air pressure in the first accommodation space 212 is less than the threshold air pressure of the first pressure valve 260, the first pressure valve 260 closes, and the gas in the first accommodation space 212 cannot be discharged through the first air outlet passage 213.

[0053] Please refer to Figure 5 , Figure 5 as Figure 2 the structural schematic diagram of the second support portion shown. The second support portion 300 includes a second support member 310, a second piston group 320, and a second abutting member 330. Figure 5 The connection between the second support member 310 and the second piston group 320 and the connection between the second support member 310 and the second abutting member 330 are shown by dashed lines in

[0054] The second abutting member 330 and the second piston group 320 are arranged in sequence and spaced along the Z-axis direction. The second piston group 320 and the second abutting member 330 are disposed on one side of the second support member 310 facing the X-axis direction. The second piston group 320 is fixedly connected to the second support member 310, and the second abutting member 330 is fixedly connected to the second support member 310.

[0055] The second support member 310 includes a second support surface 311, and the second support surface 311 is the surface of the second support member 310 facing the Z-axis direction. The second support member 310 is provided with a second accommodation space 312, the second accommodation space 312 has an opening, and the second support surface 311 extends to the opening of the second accommodation space 312.

[0056] The second support portion 300 further includes a second rotating member 340, and the second rotating member 340 is disposed in the second accommodation space 312. The second rotating member 340 can rotate in the second accommodation space 312. The second rotating member 340 may be composed of a rotating shaft and an impeller. The axial direction of the rotating shaft is parallel to the Y-axis direction, and the impeller is sleeved on the rotating shaft.

[0057] The second support portion 300 further includes a second air nozzle 350, and the second air nozzle 350 is disposed in the second accommodation space 312. The second support portion 300 is provided with a second gas passage 301, and the second gas passage 301 is respectively communicated with the second accommodation space 312 and the surface of the second piston group 320.

[0058] The second support member 310 is provided with a second air outlet channel 313, and the second air outlet channel 313 is communicated with the second accommodation space 312 and the outside respectively. The second support portion 300 further includes a second pressure valve 360, and the second pressure valve 360 is disposed in the second air outlet channel 313. When the air pressure in the second accommodation space 312 is greater than the threshold air pressure of the second pressure valve 360, the second pressure valve 360 opens, and the gas in the second accommodation space 312 is discharged through the second air outlet channel 313. When the air pressure in the second accommodation space 312 is less than the threshold air pressure of the second pressure valve 360, the second pressure valve 360 closes, and the gas in the second accommodation space 312 cannot be discharged through the second air outlet channel 313.

[0059] Please refer to again Figure 2 , the main support surface 101, the first support surface 211 and the second support surface 311 are flush. Part of the display screen 10 is disposed on the main support surface 101, the first support surface 211 and the second support surface 311, and part of the display screen 10 is disposed in the first accommodation space 212 and the second accommodation space 312. The display screen 10 located in the first accommodation space 212 is wound around the first rotating member 240, and the display screen 10 located in the second accommodation space 312 is wound around the second rotating member 340.

[0060] It can be understood that the ratio of the area of the display screen 10 on the main support surface 101, the first support surface 211 and the second support surface 311 to the area of the display screen 10 in the first accommodation space 212 and the second accommodation space 312 can be changed, so that the display area of the display device 1 can be increased or decreased.

[0061] The first piston group 220 is disposed in the first air chamber 103, and the first piston group 220 can reciprocate in the first air chamber 103 along the X-axis direction. The first abutting member 230 is disposed in the first abutting hole 108, and the first abutting member 230 can reciprocate in the first abutting hole 108 along the X-axis direction. The inner wall of the first abutting hole 108 abuts the first abutting member 230 in the Z-axis direction to prevent the first support portion 200 from moving relative to the support body 100 in the Z-axis direction.

[0062] The first piston group 220 divides the first air chamber 103 into a first rod chamber 103a and a first rodless chamber 103b. The first rod chamber 103a is the space surrounded by the piston rod of the first piston group 220 and the side wall of the first air chamber 103. The first rodless chamber 103b is the space surrounded by the piston of the first piston group 220 and the bottom wall of the first air chamber 103. The first air passage 105 communicates with the first rodless chamber 103b of the first air chamber 103. The connecting air passage 107 communicates with the first rod chamber 103a of the first air chamber 103.

[0063] The second piston group 320 is disposed in the second air chamber 104. The second piston group 320 can reciprocate in the second air chamber 104 along the X-axis direction. The second abutting member 330 is disposed in the second abutting hole 109. The second abutting member 330 can reciprocate in the second abutting hole 109 along the X-axis direction. The inner wall of the second abutting hole 109 abuts the second abutting member 330 in the Z-axis direction to prevent the second support portion 300 from moving relative to the support body 100 in the Z-axis direction.

[0064] The second piston group 320 divides the second air chamber 104 into a second rod chamber 104a and a second rodless chamber 104b. The second rod chamber 104a is the space surrounded by the piston rod of the second piston group 320 and the side wall of the second air chamber 104. The second rodless chamber 104b is the space surrounded by the piston of the second piston group 320 and the bottom wall of the second air chamber 104. The first air passage 105 communicates with the second rodless chamber 104b of the second air chamber 104. The second air passage 106 communicates with the second rod chamber 104a of the second air chamber 104. The connecting air passage 107 communicates with the second rod chamber 104a of the second air chamber 104.

[0065] In an exemplary embodiment, as Figure 2 shown, the support assembly 20 further includes a first magnet 530 and a second magnet 540. The first magnet 530 is disposed on the bottom wall of the first air chamber 103, and the first magnet 530 is fixedly connected to the bottom wall of the first air chamber 103. The second magnet 540 is disposed on the bottom wall of the second air chamber 104, and the second magnet 540 is fixedly connected to the bottom wall of the second air chamber 104. The first magnet 530 magnetically attracts the first piston group 220, and the second magnet 540 magnetically attracts the second piston group 320.

[0066] Understandably, when the first piston group 220 moves to the bottom dead center, the first magnet 530 magnetically attracts the first piston group 220, preventing the first support portion 200 from loosening relative to the support main body 100. When the second piston group 320 moves to the bottom dead center, the second magnet 540 magnetically attracts the second piston group 320, preventing the second support portion 300 from loosening relative to the support main body 100. Herein, the position where the piston moves to the position with the minimum distance between the piston and the bottom wall of the air chamber is called the bottom dead center.

[0067] In an exemplary embodiment, the support assembly 20 further includes a first pressure sensor 550 and a second pressure sensor 560. The first pressure sensor 550 is disposed at the opening of the first air chamber 103, and the second pressure sensor 560 is disposed at the opening of the second air chamber 104.

[0068] The first pressure sensor 550 is used to detect the position of the first piston group 220 in the first air chamber 103. For example, when the first piston group 220 moves to the top dead center, the first piston group 220 contacts the first pressure sensor 550, and the first pressure sensor 550 detects the pressure, thereby detecting that the first piston group 220 is at the top dead center.

[0069] The second pressure sensor 560 is used to detect the position of the second piston group 320 in the second air chamber 104. For example, when the second piston group 320 moves to the top dead center, the second piston group 320 contacts the second pressure sensor 560, and the second pressure sensor 560 detects the pressure, thereby detecting that the second piston group 320 is at the top dead center.

[0070] Herein, the position where the piston moves to the position with the maximum distance between the piston and the bottom wall of the air chamber is called the top dead center.

[0071] In an exemplary embodiment, please refer to Figure 2 , the air compression assembly 400 is disposed in the air cavity 102. The air compression assembly 400 includes an electromagnet 410, a magnetic member 420, an elastic member 430, and a one-way valve 440. The electromagnet 410 is disposed at the bottom wall of the air cavity 102, the one-way valve 440 is disposed at the opening of the air cavity 102, the magnetic member 420 and the elastic member 430 are disposed between the electromagnet 410 and the one-way valve 440, and the magnetic member 420 and the elastic member 430 are fixedly connected. The elastic member 430 is fixedly connected to the side wall of the air cavity 102, and the magnetic member 420 can reciprocate in the air cavity 102. The one-way valve 440 allows the gas to enter the air cavity 102 from the outside and prevents the gas in the air cavity 102 from leaking to the outside. The electromagnet 410 is used to intermittently form a magnetic field, and the magnetic field is used to magnetically attract the magnetic member 420.

[0072] For example, the electromagnet 410 forms a magnetic field, which magnetically attracts the magnetic member 420. The magnetic member 420 moves along the Z-axis, compressing the elastic member 430. External gas enters the air cavity 102 through the one-way valve 440. When the electromagnet 410 does not form a magnetic field, the elastic member 430 returns to its original state, driving the magnetic member 420 to move in the opposite direction along the Z-axis. Due to the presence of the one-way valve 440, the gas can only enter the first air passage 105 and the second air passage 106. In this way, the magnetic member 420 can reciprocate within the air cavity 102, compressing the gas in the air cavity 102 into the first air passage 105 or the second air passage 106.

[0073] In an exemplary embodiment, the elastic member 430 is a helical spring.

[0074] In an exemplary embodiment, the support assembly 20 further includes a first switching valve 510 and a second switching valve 520. The first switching valve 510 is disposed in the first air passage 105, and the second switching valve 520 is disposed in the second air passage 106. The first switching valve 510 and the second switching valve 520 are not simultaneously conductive, and the gas compressed by the air compression assembly 400 can only enter the first air passage 105 or the second air passage 106.

[0075] That is, the air cavity 102 is selectively in communication with the first rod chamber 103a or the first rodless chamber 103b, and the air cavity 102 is selectively in communication with the second rod chamber 104a or the second rodless chamber 104b. The air compression assembly 400 supplies gas to the first rod chamber 103a and the second rod chamber 104a simultaneously, or supplies gas to the first rodless chamber 103b and the second rodless chamber 104b simultaneously.

[0076] In an exemplary embodiment, the first switching valve 510 can be a solenoid valve, and the second switching valve 520 can be a solenoid valve.

[0077] Please refer to Figure 6 and Figure 7 , Figure 6 is a top view structural schematic diagram of the display device disclosed in the embodiment of the present application in the second display state. Figure 7 is Figure 6 a first cross-sectional structural schematic diagram of the display device shown in the II-II direction. The display area of the display device 1 in the second display state is larger, that is, the display area of the display device 1 in the second display state is larger than the display area of the display device 1 in the first display state.

[0078] Figure 2 The first piston group 220 shown is at the bottom dead center, and the second piston group 320 is at the bottom dead center. Figure 7The first piston group 220 shown is at the top dead center, and the second piston group 320 is at the top dead center, that is, at this time, the piston moves to the position where the distance between the piston and the bottom wall of the air chamber is the largest.

[0079] The display device 1 switches from the first display state to the second display state, that is, the display device 1 switches from Figure 2 the structure shown to Figure 7 the structure shown. The first pressure sensor 550 does not detect the first piston group 220, and the second pressure sensor 560 does not detect the second piston group 320. The first switching valve 510 is opened, and the second switching valve 520 is closed. The air compression assembly 400 injects gas into the first air passage 105, and the gas in the first air passage 105 enters the first rodless chamber 103b of the first air chamber 103 and the second rodless chamber 104b of the second air chamber 104.

[0080] The pressure in the first rodless chamber 103b is greater than the pressure in the first rod chamber 103a, and the first piston group 220 moves from the bottom dead center to the top dead center (in the X-axis direction). The pressure in the second rodless chamber 104b is greater than the pressure in the second rod chamber 104a, and the second piston group 320 moves from the bottom dead center to the top dead center (in the opposite direction of the X-axis). This causes the first support portion 200 to move along the X-axis direction, and the second support portion 300 to move along the opposite direction of the X-axis. Furthermore, the display screen 10 located in the first accommodation space 212 spreads to the first support surface 211, and the display screen 10 located in the second accommodation space 312 spreads to the second support surface 311, achieving an increase in the display area of the display device 1.

[0081] While the first support portion 200 moves along the X-axis direction, the display screen 10 wound around the first rotating member 240 drives the first rotating member 240 to rotate clockwise. While the second support portion 300 moves along the opposite direction of the X-axis, the display screen 10 wound around the second rotating member 340 drives the second rotating member 340 to rotate counterclockwise.

[0082] The display device 1 switches from the second display state to the first display state, that is, the display device 1 switches from Figure 7 the structure shown to Figure 2 the structure shown. The first pressure sensor 550 detects the first piston group 220, and the second pressure sensor 560 detects the second piston group 320. The first switching valve 510 is closed, and the second switching valve 520 is opened. The air compression assembly 400 injects gas into the second air passage 106, and the gas in the second air passage 106 enters the second rod chamber 104a of the second air chamber 104. The gas in the second rod chamber 104a of the second air chamber 104 enters the first rod chamber 103a of the first air chamber 103 through the connecting air passage 107.

[0083] The pressure in the first rod chamber 103a is greater than the pressure in the first rodless chamber 103b, the first piston group 220 moves from the top dead center to the bottom dead center (in the opposite direction of the X axis), the pressure in the second rod chamber 104a is greater than the pressure in the second rodless chamber 104b, the second piston group 320 moves from the top dead center to the bottom dead center (in the X axis direction), so that the first support part 200 moves in the opposite direction of the X axis, and the second support part 300 moves in the X axis direction.

[0084] At the same time, the gas around the piston rod of the first piston group 220 is compressed and passes through the first gas channel 201 to the first gas nozzle 250. The first gas nozzle 250 blows gas to the first rotating member 240, driving the first rotating member 240 to rotate counterclockwise. The first rotating member 240 retracts the display screen 10 located on the first supporting surface 211 into the first accommodating space 212. The gas around the piston rod of the second piston group 320 is compressed and passes through the second gas channel 301 to the second gas nozzle 350. The second gas nozzle 350 blows gas to the second rotating member 340, driving the second rotating member 340 to rotate clockwise. The second rotating member 340 retracts the display screen 10 located on the second supporting surface 311 into the second accommodating space 312.

[0085] In other embodiments, the first rotating member 240 and the second rotating member 340 may be driven to rotate by a motor so that the first rotating member 240 retracts the display screen 10 into the first accommodating space 212 and the second rotating member 340 retracts the display screen 10 into the second accommodating space 312 .

[0086] In a possible manner, the support assembly 20 may not include the second support portion 300, and the support body 100 may not have the second air chamber 104 and the second abutting hole 109. Compared with the support assembly 20 not including the second support portion 300, and the support body 100 not having the second air chamber 104 and the second abutting hole 109, the support assembly 20 exemplarily disclosed in the present application includes the first support portion 200 and the second support portion 300, and the support body 100 has the first air chamber 103, the second air chamber 104, the first abutting hole 108, and the second abutting hole 109, which can more quickly increase or decrease the display area of the display device 1.

[0087] See also Figure 8 and Figure 9 , Figure 8 for Figure 1 The second cross-sectional view of the display device along the II direction is shown. Figure 9 for Figure 6 The second cross-sectional view of the display device along the II-II direction is a schematic structural diagram. Figure 8 The display device 1 shown is Figure 2The differences of the display device 1 shown and Figure 9 the display device 1 shown and Figure 7 the differences of the display device 1 shown are as follows: Figure 8 and Figure 9 the display device 1 shown further includes a gear and a rack. Figure 8 the display device 1 shown and Figure 2 the description of the same structures of the display device 1 shown and Figure 9 the display device 1 shown and Figure 7 the description of the same structures of the display device 1 shown, please refer to Figures 2 to 7 the relevant description, which will not be elaborated here.

[0088] Specifically, the support assembly 20 further includes a first gear 610, a first rack 620 and a first connecting member 630, a second gear 710, a second rack 720 and a second connecting member 730.

[0089] As Figure 8 and Figure 9 shown, the first connecting member 630 is connected to one side of the support body 100 facing the X-axis direction, and the first connecting member 630 is fixedly connected to the support body 100. The first gear 610 is disposed at one end of the first connecting member 630 facing away from the support body 100, and the first gear 610 is fixedly connected to the support body 100.

[0090] The second connecting member 730 is connected to one side of the support body 100 facing the opposite direction of the X-axis, and the second connecting member 730 is fixedly connected to the support body 100. The second gear 710 is disposed at one end of the second connecting member 730 facing away from the support body 100, and the second gear 710 is fixedly connected to the support body 100.

[0091] The first support member 210 is provided with a first accommodation groove 214, and the opening of the first accommodation groove 214 faces the opposite direction of the X-axis. The height of the position where the first accommodation groove 214 is located is lower than the height of the position where the first abutting hole 108 is located, that is, the first accommodation groove 214 is located below the first abutting hole 108 along the Z-axis direction. The second support member 310 is provided with a second accommodation groove 314, and the opening of the second accommodation groove 314 faces the X-axis direction. The height of the position where the second accommodation groove 314 is located is lower than the height of the position where the second abutting hole 109 is located, that is, the second accommodation groove 314 is located below the second abutting hole 109 along the Z-axis direction.

[0092] The first rack 620 is disposed on the side wall of the first accommodation groove 214, and the first rack 620 is fixedly connected to the side wall of the first accommodation groove 214. The second rack 720 is disposed on the side wall of the second accommodation groove 314, and the second rack 720 is fixedly connected to the side wall of the second accommodation groove 314.

[0093] Both the first gear 610 and the first connecting member 630 are disposed in the first accommodation groove 214. The first gear 610 meshes with the first rack 620, and the first rack 620 can reciprocate relative to the first gear 610 along the X-axis direction. Both the second gear 710 and the second connecting member 730 are disposed in the second accommodation groove 314. The second gear 710 meshes with the second rack 720, and the second rack 720 can reciprocate relative to the second gear 710 along the X-axis direction.

[0094] Understandably, by meshing the first gear 610 with the first rack 620, the first support portion 200 reciprocates more smoothly relative to the support main body 100. By meshing the second gear 710 with the second rack 720, the second support portion 300 reciprocates more smoothly relative to the support main body 100.

[0095] In an exemplary embodiment, such as Figure 8 and Figure 9 shown, the first support portion 200 further includes a first telescopic member 280. The first telescopic member 280 is disposed on the first support member 210, and the first telescopic member 280 is fixedly connected to the first support member 210 and the support main body 100 respectively. The upper surface of the first telescopic member 280 is flush with the main support surface 101. The second support portion 300 further includes a second telescopic member 380. The second telescopic member 380 is disposed on the second support member 310, and the second telescopic member 380 is fixedly connected to the second support member 310 and the support main body 100 respectively. The upper surface of the second telescopic member 380 is flush with the main support surface 101.

[0096] Wherein, the upper surface of the first telescopic member 280 is the surface of the first telescopic member 280 facing the Z-axis direction, and the upper surface of the second telescopic member 380 is the surface of the second telescopic member 380 facing the Z-axis direction.

[0097] In an exemplary embodiment, the display screen 10 is located on the upper surface of the first telescopic member 280, the main support surface 101, and the upper surface of the second telescopic member 380.

[0098] Understandably, the first telescopic member 280 is used to expand and contract to adapt to the movement of the first support portion 200 relative to the support body 100, avoiding the occurrence of a gap between the first support portion 200 and the support body 100, which may cause the display screen 10 to not be sufficiently supported. The second telescopic member 380 is used to expand and contract to adapt to the movement of the second support portion 300 relative to the support body 100, avoiding the occurrence of a gap between the second support portion 300 and the support body 100, which may cause the display screen 10 to not be sufficiently supported.

[0099] Please refer to Figure 10 and Figure 11 , Figure 10 is Figure 1 the schematic structural diagram of the third cross-section of the display device shown along the I-I direction, Figure 11 is Figure 6 the schematic structural diagram of the third cross-section of the display device shown along the II-II direction. Figure 10 The difference between the display device 1 shown and Figure 8 the display device 1 shown and Figure 11 the difference between the display device 1 shown and Figure 9 the display device 1 shown lies in: Figure 10 and Figure 11 the display device 1 shown further includes a control unit and a power supply. Figure 10 The description of the same structure between the display device 1 shown and Figure 8 the display device 1 shown and Figure 11 the description of the same structure between the display device 1 shown and Figure 9 the display device 1 shown, please refer to Figure 8 and Figure 9 for the relevant description, which will not be elaborated here.

[0100] Specifically, the display device 1 includes a control unit 50 and a power supply 60. The control unit 50 is electrically connected to the power supply 60, and the power supply 60 is used to supply power to the control unit 50. The control unit 50 is also electrically connected to the electromagnet 410 of the air compression assembly 400, and the control unit 50 is used to intermittently supply power to the electromagnet 410, so that the electromagnet 410 generates an intermittent magnetic field. Among them, the current provided by the control unit 50 to the electromagnet 410 can be a pulsed current.

[0101] In an exemplary embodiment, the control unit 50 is also electrically connected to the first pressure sensor 550, the second pressure sensor 560, the first switching valve 510, and the second switching valve 520 respectively.

[0102] When the first pressure sensor 550 does not detect the first piston group 220 and the second pressure sensor 560 does not detect the second piston group 320, the control unit 50 controls the first switching valve 510 to open and the second switching valve 520 to close. Before the first piston group 220 moves from the bottom dead center to the top dead center and the second piston group 320 moves from the bottom dead center to the top dead center, the first switching valve 510 remains open and the second switching valve 520 remains closed.

[0103] When the first pressure sensor 550 detects the first piston group 220 and the second pressure sensor 560 detects the second piston group 320, the control unit 50 controls the first switching valve 510 to close and the second switching valve 520 to open. Before the first piston group 220 moves from the top dead center to the bottom dead center and the second piston group 320 moves from the top dead center to the bottom dead center, the first switching valve 510 remains closed and the second switching valve 520 remains open.

[0104] In an exemplary embodiment, the control unit 50 is a chip. The VCC terminal of the chip is electrically connected to the power supply 60, the GND terminal of the chip is grounded, and the I / O pin of the chip is electrically connected to the electromagnet 410. The RDX pin of the chip is electrically connected to the CPU of the display device 1. The display device also has a built-in APP. Through the APP, an instruction is given to the CPU, and the CPU sends a signal to the control unit 50. The control unit 50 controls the display area of the display device 1 to increase or decrease, realizing digital operation of increasing or decreasing the display area of the display device 1, and the operation is simple.

[0105] In summary, the display device 1 disclosed in the embodiments of the present application includes a display screen 10 and a support assembly 20. The support assembly 20 includes a support body 100, a first support portion 200, and an air compression assembly 400. The support body 100 is provided with an air chamber 102 and a first air chamber 103, and the air chamber 102 is spaced from the first air chamber 103. The first support portion 200 includes a first support member 210, a first piston group 220, and a first rotating member 240. The first support member 210 is provided with a first accommodation space 212, and the first rotating member 240 is disposed in the first accommodation space 212. The first piston group 220 is fixed to one side of the first support member 210. The first support member 210 is disposed on the support body 100, and the first piston group 220 is disposed in the first air chamber 103. The first piston group 220 divides the first air chamber 103 into a first rod chamber 103a and a first rodless chamber 103b, and the air chamber 102 is selectively communicated with the first rod chamber 103a or the first rodless chamber 103b. The air compression assembly 400 is disposed in the air chamber 102. Wherein, the display screen 10 is disposed on the support body 100, on the first support member 210, and in the first accommodation space 212. The display screen 10 is wound around the first rotating member 240. The air compression assembly 400 injects gas into the first rodless chamber 103b, and the first support portion 200 moves in the X-axis direction to drive the display screen 10 located in the first accommodation space 212 to spread onto the first support member 210. The air compression assembly 400 injects gas into the first rod chamber 103a, the first support portion 200 moves away from the X-axis direction, and the first rotating member 240 rotates to drive the display screen 10 located on the first support member 210 to retract into the first accommodation space 212, so as to realize the change of the display area. Moreover, there is no gap in the display device 1, so that the display device 1 can be applied to a small-size display screen. Therefore, the display device 1 of the present application not only solves the defect of the gap between the splicing display screens in the prior art, but also realizes the display area of the small-size display screen, and can be used for the requirements of different display sizes.

[0106] In addition, the display device 1 provided by the present application can realize a variety of different display areas, and can accurately control the size of the display area. Moreover, after the display area is increased, the support performance for the display screen 10 is better.

[0107] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc., mean that the specific features, structures, materials, or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiments or examples. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0108] It should be understood that the application of this application is not limited to the above examples. For those of ordinary skill in the art, improvements or transformations can be made according to the above description. All such improvements and transformations should fall within the protection scope of the appended claims of this application. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of this application still fall within the scope covered by this application.

Claims

1. A display device, comprising a display screen for displaying a picture, characterized in that, The display device further includes a support assembly, and the support assembly includes: A support main body, which is provided with an air cavity and a first air chamber, and the air cavity and the first air chamber are arranged at intervals; A first support portion, which includes a first support member, a first piston group and a first rotating member. The first support member is provided with a first accommodating space, the first rotating member is arranged in the first accommodating space, the first piston group is fixed to one side of the first support member, the first support member is arranged on the support main body, the first piston group is arranged in the first air chamber, and the first piston group divides the first air chamber into a first rod chamber and a first rodless chamber. The air cavity is selectively communicated with the first rod chamber or the first rodless chamber; An air compression assembly, which is arranged in the air cavity; Wherein, the display screen is arranged on the support main body, on the first support member and in the first accommodating space, the display screen is wound around the first rotating member, the air compression assembly injects gas into the first rodless chamber, and the first support portion moves in the first direction to drive the display screen in the first accommodating space to spread onto the first support member; the air compression assembly injects gas into the first rod chamber, and the first support portion moves away from the first direction, causing the first rotating member to rotate, so as to drive the display screen on the first support member to retract into the first accommodating space.

2. The display device according to claim 1, wherein The support assembly further includes a first magnet, which is arranged on the bottom wall of the first air chamber, and the first magnet magnetically attracts the first piston group.

3. The display device according to claim 1, characterized in that The first support portion further includes a first air nozzle, which is arranged in the first accommodating space. The first support portion is provided with a first gas channel, and the first gas channel is respectively communicated with the first accommodating space and the surface of the first piston group. The first air nozzle is used to blow air to the first rotating member to drive the first rotating member to rotate.

4. The display device according to claim 1, wherein The support main body is provided with a second air chamber, and the second air chamber is spaced from the first air chamber and the air cavity respectively; The support assembly further includes a second support portion, which includes a second support member, a second piston group and a second rotating member. The second support member is provided with a second accommodating space, the second rotating member is arranged in the second accommodating space, the second piston group is fixed to one side of the second support member, the second support member is arranged on the support main body, the second piston group is arranged in the second air chamber, and the second piston group divides the second air chamber into a second rod chamber and a second rodless chamber. The air cavity is selectively communicated with the second rod chamber or the second rodless chamber; Wherein, the display screen is disposed on the support main body, on the second support member, and within the second accommodation space. The display screen is wound around the second rotating member. The air compression assembly injects gas into the second rodless chamber, and the second support portion moves away from the first direction to drive the display screen within the second accommodation space to spread onto the second support member. The air compression assembly injects gas into the second rod chamber, and the second support portion moves toward the first direction, causing the second rotating member to rotate, so as to drive the display screen on the second support member to retract into the second accommodation space.

5. The display device according to claim 4, wherein The support assembly further includes a second magnet, which is disposed on the bottom wall of the second air chamber, and the second magnet magnetically attracts the second piston group.

6. The display device according to claim 4, characterized in that, The second support portion further includes a second air nozzle, which is disposed within the second accommodation space. The second support portion is provided with a second gas passage, and the second gas passage is respectively communicated with the second accommodation space and the surface of the second piston group. The second air nozzle is used to blow air toward the second rotating member to drive the second rotating member to rotate.

7. The display device according to any one of claims 4 to 6, characterized in that, The support main body is provided with a first air passage, a second air passage, and a connection air passage. The first air passage is respectively communicated with the air chamber, the first rodless chamber, and the second rodless chamber. The second air passage is respectively communicated with the air chamber and the second rod chamber. The connection air passage is respectively communicated with the first rod chamber and the second rod chamber; The support assembly further includes a first switching valve and a second switching valve. The first switching valve is disposed within the first air passage, and the second switching valve is disposed within the second air passage. The first switching valve and the second switching valve are not simultaneously turned on.

8. The display device according to claim 7, characterized in that, The air compression assembly includes an electromagnet, a magnetic member, an elastic member, and a check valve. The electromagnet is disposed on the bottom wall of the air chamber, the check valve is disposed at the opening of the air chamber, the magnetic member and the elastic member are disposed between the electromagnet and the check valve, the magnetic member and the elastic member are fixedly connected, the elastic member is fixedly connected to the side wall of the air chamber, and the electromagnet is used to intermittently form a magnetic field to drive the magnetic member to reciprocate within the air chamber.

9. The display device according to claim 8, wherein, The support assembly further includes a first pressure sensor and a second pressure sensor. The first pressure sensor is disposed at the opening of the first air chamber, and the second pressure sensor is disposed at the opening of the second air chamber. The first pressure sensor is used to detect the position of the first piston group within the first air chamber, and the second pressure sensor is used to detect the position of the second piston group within the second air chamber.

10. The display device according to claim 9, wherein, The display device further includes a control unit, and the control unit is also electrically connected to the electromagnet. The control unit is used to intermittently supply power to the electromagnet; The control unit is also electrically connected to the first pressure sensor, the second pressure sensor, the first switching valve, and the second switching valve respectively. When the first pressure sensor does not detect the first piston group and the second pressure sensor does not detect the second piston group, the control unit controls the first switching valve to open and the second switching valve to close; when the first pressure sensor detects the first piston group and the second pressure sensor detects the second piston group, the control unit controls the first switching valve to close and the second switching valve to open.

Images