Display device and storage box

Abstract

The utility model discloses a display device and a storage box, and relates to the technical field of information display and display. The display device comprises a supporting frame, a first display screen, a second display screen, a first connecting cable and a cable protection structure. The second display screen is rotationally connected with the first display screen so as to have an unfolded state located above the first display screen and a folded state covering the display surface of the first display screen. The first connecting cable is electrically connected with the first display screen and the second display screen; the cable protection structure is arranged on the periphery of the first connecting cable in a sleeving mode and can stretch out and draw back in the axial direction. In the unfolding state, the cable protection structure retracts and is hidden in the first display screen and the second display screen; in the folding state, the cable protection structure is stretched and exposed out of the first display screen and the second display screen. According to the technical scheme provided by the utility model, the reliability of the display device is improved while the transportation convenience is improved.

Description

Technical Field

[0001] This utility model relates to the field of information display and exhibition technology, and in particular to a display device and a storage box. Background Technology

[0002] In applications involving frequent relocation, such as exhibition setups, performances, and mobile conferences, large-size display devices often need to be packed, transported, and redeployed within a short period of time. Traditional display devices often have excessively high screen heights, preventing them from fitting into elevators or shipping containers, thus causing transportation difficulties.

[0003] Existing display devices typically feature at least two detachable displays along their height. Power supply and signal synchronization between these displays are achieved via connecting cables. This allows for a large viewing area when connected and reduces the overall height when disassembled, thus simplifying transportation. While existing devices mitigate the impact of height on transportation to some extent, the cumbersome assembly and disassembly process, coupled with the exposed cables after connection or disassembly, makes these cables susceptible to damage during transport and use. This can lead to signal interruptions and other malfunctions, affecting the normal operation of the display device. Utility Model Content

[0004] The main purpose of this utility model is to provide a display device and a storage box, which aims to improve the convenience of transportation while improving the reliability of the display device.

[0005] To achieve the above objectives, the display device proposed in this utility model includes:

[0006] Support frame;

[0007] The first display screen is mounted on the support frame;

[0008] The second display screen is rotatably connected to the first display screen to have an unfolded state located above the first display screen and a folded state covering the display surface of the first display screen.

[0009] A first connecting cable electrically connects the first display screen and the second display screen; and

[0010] A cable protection structure is sleeved on the outer periphery of the first connecting cable and is axially expandable and contractible. One end of the cable protection structure is connected to the inside of the first display screen, and the other end of the cable protection structure is connected to the inside of the second display screen.

[0011] In the unfolded state, the cable protection structure is retracted and hidden inside the first display screen and the second display screen; in the folded state, the cable protection structure is stretched and exposed outside the first display screen and the second display screen.

[0012] In one embodiment, the cable protection structure includes a first drag chain and an elastic part connected to each other. The elastic part is connected inside one of the first display screen and the second display screen and is axially extendable. One end of the first drag chain extends movably into the interior of one of the first display screen and the second display screen and is connected to the elastic part. The other end of the first drag chain is connected inside the other of the first display screen and the second display screen. The first drag chain is hollow to form a cable passage, and the first connecting cable passes through the cable passage.

[0013] In the unfolded state, the elastic portion retracts, so that the first cable chain is hidden inside the first display screen and the second display screen; in the folded state, the elastic portion stretches, and the first cable chain is partially exposed outside the first display screen and the second display screen.

[0014] In one embodiment, a limiting structure is provided inside the first display screen and / or inside the second display screen to restrict the movement of the first cable chain and the elastic portion.

[0015] In one embodiment, the first display screen is provided with a first connection end, the second display screen is provided with a second connection end rotatably connected to the first connection end, and the cable protection structure movably passes through the first connection end and the second connection end;

[0016] The display device further includes a connecting structure that rotatably connects the first connecting end and the second connecting end. In the unfolded state, the connecting structure is hidden inside the first display screen and the second display screen so that the first connecting end and the second connecting end fit together.

[0017] In one embodiment, the connection structure includes:

[0018] The first hinge block is located on the inner side of the first connecting end;

[0019] The second hinge block is located on the inner side of the second connecting end;

[0020] A first connector extends through the first connecting end and the second connecting end, one end of the first connector being slidably connected to the first hinge block and the other end being hinged to the second hinge block; and

[0021] The second connector extends through the first connector and the second connector. One end of the second connector is slidably connected to the second hinge block, and the other end is hinged to the first hinge block. The middle part of the second connector is hinged to the middle part of the first connector.

[0022] In the unfolded state, both the first connector and the second connector are hidden inside the first hinge block and the second hinge block, so that the first connecting end and the second connecting end fit together.

[0023] In one embodiment, the display device further includes:

[0024] A first locking structure is disposed between the first display screen and the second display screen, wherein, in the folded state, the first locking structure can lock the second display screen to the first display screen; and

[0025] A second locking structure is disposed between the first display screen and the second display screen. In the unfolded state, the second locking structure can lock the second display screen to the first display screen.

[0026] In one embodiment, the first locking structure includes:

[0027] A plug is located at the end of the first display screen away from the second display screen, and limiting recesses are provided on opposite sides of the plug;

[0028] A socket is located at the end of the second display screen away from the first display screen, the socket having a slot for insertion of the plug; and

[0029] An elastic element is movably protruding from the groove wall of the slot. The elastic element can extend into the limiting recess and abut against the limiting recess to restrict the plug to the socket.

[0030] In one embodiment, the display device further includes a control box disposed on the back of the first display screen and electrically connected to the first connecting cable, and the support frame includes:

[0031] Base;

[0032] A column is provided on the base and is hollow;

[0033] A controller is located on the base, and the controller is electrically connected to the control box via a second connecting cable.

[0034] An electrically operated lifting column, which is vertically mounted inside the column and electrically connected to the controller, is also connected to a drive unit of the first display screen to drive the first display screen to rise and fall; and

[0035] A receiving box is provided on the electric lifting column and extends along the lifting direction, and the middle part of the second connecting cable is retractably provided in the receiving box.

[0036] In one embodiment, the column is provided with a cable routing channel, and the display device further includes a second drag chain sleeved around the periphery of the second connecting cable, one end of which is movably stored in the receiving box, and the other end of the second drag chain is provided in the cable routing channel;

[0037] The electric lifting column rises relative to the column, which can drive the receiving box to rise, thereby causing the second cable chain to extend out of the receiving box and unfold along the cable tray.

[0038] This utility model also proposes a storage box for storing a display device as described in any of the above embodiments, wherein the second display screen of the display device is in the folded state, comprising:

[0039] The box body has a storage cavity and a side opening that communicates with the storage cavity;

[0040] The cover, rotatably connected to the housing, has an open state exposing the side opening and a closed state covering the side opening; and

[0041] A protective pad is provided on the cavity wall of the storage cavity and can abut against the display device to restrict the movement of the display device within the storage cavity;

[0042] In the open state, the cover is tilted relative to the housing and forms a guide surface, allowing the display device to enter the side opening along the guide surface.

[0043] The technical solution of this utility model involves setting a support frame, a first display screen, a second display screen, a first connecting cable, and a cable protection structure in a display device. The first display screen is mounted on the support frame; the second display screen is rotatably connected to the first display screen to have an unfolded state above the first display screen and a folded state covering the display surface of the first display screen; the first connecting cable electrically connects the first display screen and the second display screen; the cable protection structure is sleeved on the outer periphery of the first connecting cable and is axially retractable, with one end of the cable protection structure connected to the inside of the first display screen and the other end connected to the inside of the second display screen; in the unfolded state, the cable protection structure retracts and is hidden inside the first and second display screens; in the folded state, the cable protection structure is stretched and exposed outside the first and second display screens. Compared to existing display devices where the displays are detachably connected and the connecting cables are exposed, the technical solution of this utility model rotatably connects the first and second displays and sets up a cable protection structure. By unfolding the second display and cooperating with the first display, a larger viewing area can be achieved. By folding the second display, the overall height of the display device can be reduced, making operation simple and improving transportation convenience. The cable protection structure can wrap and protect the first connecting cable, preventing damage to the first connecting cable during transportation and use. It can also prevent the first connecting cable from being excessively stretched when the second display rotates relative to the first display, reducing the risk of failure such as signal interruption and improving the reliability of the display device. Attached Figure Description

[0044] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0045] Figure 1 A schematic diagram of an embodiment of the display device provided by this utility model, wherein the second display screen is in an unfolded state;

[0046] Figure 2 A schematic diagram of an embodiment of the display device provided by this utility model, wherein the second display screen is in a folded state;

[0047] Figure 3 for Figure 1 A schematic diagram of the structure of an embodiment from another perspective;

[0048] Figure 4 for Figure 2 An enlarged view of an embodiment at point A;

[0049] Figure 5 for Figure 3 An enlarged view of an embodiment at point B;

[0050] Figure 6 for Figure 3 An enlarged view of an embodiment at point C;

[0051] Figure 7 for Figure 3 An enlarged view of an embodiment at point D;

[0052] Figure 8 A schematic diagram of the internal structure of an embodiment of the control box provided by this utility model;

[0053] Figure 9 for Figure 1 A schematic diagram of the structure of an embodiment from another perspective;

[0054] Figure 10 A schematic diagram of the structure of an embodiment of the support frame provided by this utility model;

[0055] Figure 11 A schematic diagram of the structure of an embodiment of the storage box provided by this utility model;

[0056] Figure 12 A schematic diagram of another embodiment of the storage box provided by this utility model;

[0057] Figure 13 A schematic diagram of an embodiment of the display device and storage box provided by this utility model;

[0058] Figure 14 A schematic diagram of another embodiment of the display device and storage box provided by this utility model.

[0059] Explanation of icon numbers:

[0060] 100. Support frame; 110. Base; 120. Column; 130. Electric lifting column; 140. Controller; 150. Control button; 160. Second cover plate; 170. Receiving box; 180. First roller;

[0061] 200, First display screen; 210, First fixing frame; 211, First connecting end; 220, First screen body; 230, First limiting bracket;

[0062] 300. Second display screen; 310. Second fixing frame; 311. Second connecting end; 320. Second screen body; 330. Second limiting bracket;

[0063] 400. Cable protection structure; 410. First cable chain; 420. Elastic part;

[0064] 500. Connecting structure; 510. First hinge block; 520. Second hinge block; 530. First connector; 540. Second connector;

[0065] 611. Plug; 612. Socket; 613. Moving part; 621. Lock hook; 622. Locking bar;

[0066] 700, Control box; 710, Box body; 720, First cover plate; 730, Antenna module; 740, Power module; 750, Control board; 760, Wired cascade interface board; 770, Signal connector; 780, Power connector;

[0067] 810. Second cable chain; 820. Second connecting cable;

[0068] 900. Storage box; 910. Box body; 920. Lid; 921. Guide surface; 930. Limiting plate; 940. Transition plate; 950. Protective pad; 960. Second roller; 970. Third locking structure.

[0069] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0070] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0071] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0072] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0073] In applications involving frequent relocation, such as exhibition setups, performances, and mobile conferences, large-size display devices often need to be packed, transported, and redeployed within a short period of time. Traditional display devices often have excessively high screen heights, preventing them from fitting into elevators or shipping containers, thus causing transportation difficulties.

[0074] Existing display devices typically feature at least two detachable displays along their height. Power supply and signal synchronization between these displays are achieved via connecting cables. This allows for a large viewing area when connected and reduces the overall height when disassembled, thus simplifying transportation. While existing devices mitigate the impact of height on transportation to some extent, the cumbersome assembly and disassembly process, coupled with the exposed cables after connection or disassembly, makes these cables susceptible to damage during transport and use. This can lead to signal interruptions and other malfunctions, affecting the normal operation of the display device.

[0075] This utility model proposes a display device that improves both the convenience of transportation and the reliability of the display device.

[0076] Please see Figures 1 to 4In one embodiment, the display device includes a support frame 100, a first display screen 200, a second display screen 300, a first connecting cable (not shown), and a cable protection structure 400. The first display screen 200 is mounted on the support frame 100. The second display screen 300 is rotatably connected to the first display screen 200 to have an unfolded state located above the first display screen 200 and a folded state covering the display surface of the first display screen 200. The first connecting cable electrically connects the first display screen 200 and the second display screen 300. The cable protection structure 400 is sleeved on the outer periphery of the first connecting cable and is axially extendable. One end of the cable protection structure 400 is connected to the interior of the first display screen 200, and the other end is connected to the interior of the second display screen 300. In the unfolded state, the cable protection structure 400 retracts and is hidden inside the first display screen 200 and the second display screen 300. In the folded state, the cable protection structure 400 is stretched and exposed outside the first display screen 200 and the second display screen 300.

[0077] The support frame 100 serves as the main support for the display device. The support frame 100 is typically made of high-strength metal or engineering plastic to ensure it does not deform or wobble when supporting a large display screen. Furthermore, the bottom of the support frame 100 is equipped with first casters 180 to facilitate movement of the entire display device, improving transport convenience.

[0078] The first display screen 200 and the second display screen 300 constitute the display structure of the display device. The first display screen 200 includes a first fixing frame 210 and a first screen body 220. The first fixing frame 210 surrounds the first screen body 220, and a first cavity is formed between the back of the first screen body 220 and the first fixing frame 210. The second display screen 300 includes a second fixing frame 310 and a second screen body 320. The second fixing frame 310 surrounds the second screen body 320, and a second cavity is formed between the back of the second screen body 320 and the second fixing frame 310. Both the first cavity and the second cavity are used to mount and accommodate circuit structures. Both the first screen body 220 and the second screen body 320 can be LED screens or OLED screens to achieve high-definition, high-contrast image display effects. The first fixing frame 210 is connected to the support frame 100 on the side facing away from the first screen body 220. The top surface of the second fixing frame 310 is rotatably connected to the bottom surface of the first fixing frame 210, allowing the second display screen 300 to rotate 90 degrees relative to the first display screen 200, thus having an unfolded state and a display state. In the unfolded state, the display surface of the second screen body 320 and the display surface of the first screen body 220 are located on the same vertical plane; in the stowed state, the display surface of the second screen body 320 covers the display surface of the first screen body 220, that is, the display surfaces of both the second screen body 320 and the first screen body 220 face inward to protect the display surfaces.

[0079] The first connecting cable is used to connect the power supply and signal of the first display screen 200 and the second display screen 300. The cable protection structure 400 is used to protect the first connecting cable. The cable protection structure 400 has a cable passage inside to accommodate the first connecting cable. The opposite ends of the first connecting cable and the cable protection structure 400 extend into the first cavity and the second cavity, respectively. The first connecting cable is electrically connected to the first screen body 220 and the second screen body 320, and the cable protection structure 400 is mechanically connected to the first fixing frame 210 and the second fixing frame 310. The cable protection structure 400 has good elastic deformation capability, and its deformation range can effectively limit the degree of stretching of the first connecting cable. Under the elastic force of the cable protection structure 400, the first connecting cable is stably constrained within a reasonable stretching range, avoiding poor contact or internal wire breakage due to excessive stretching. The first connecting cable can be an integrated cable, incorporating power lines, signal transmission lines, etc. Alternatively, it can consist of multiple independent and parallel cables, such as power lines and signal transmission lines. The cable protection structure 400 has multiple parallel cable passages to accommodate each cable and prevent tangling and interference. Multiple sets of first connecting cables can be provided, with corresponding cable protection structures 400. Preferably, the first connecting cable is retractable, extending and retracting synchronously with the cable protection structure 400 to better adapt to changes in the state of the second display screen 300 and avoid inconvenience caused by excessively long or short cables. Of course, in other embodiments, the first connecting cable may not be retractable, as long as the cable passages allow the cable protection structure 400 to bend and the length of the first connecting cable is sufficient to allow the second display screen 300 to switch between a folded and unfolded state.

[0080] In the folded state, the cable protection structure 400 is stretched and exposed outside the first cavity and the second cavity, providing external protection for the first connecting cable and effectively preventing the first connecting cable from being accidentally pulled or collided during transportation. In the unfolded state, the cable protection structure 400 is retracted and hidden in the first cavity and the second cavity, thereby hiding the first connecting cable in the first cavity and the second cavity and preventing the first connecting cable from being accidentally pulled or collided during use.

[0081] The technical solution of this utility model involves setting a support frame 100, a first display screen 200, a second display screen 300, a first connecting cable, and a cable protection structure 400 in a display device. The first display screen 200 is disposed on the support frame 100; the second display screen 300 is rotatably connected to the first display screen 200 to have an unfolded state located above the first display screen 200 and a folded state covering the display surface of the first display screen 200; the first connecting cable electrically connects the first display screen 200 and the second display screen 300; the cable protection structure 400 is sleeved on the outer periphery of the first connecting cable and is axially extendable and retractable, with one end of the cable protection structure 400 connected to the inside of the first display screen 200 and the other end connected to the inside of the second display screen 300; in the unfolded state, the cable protection structure 400 retracts and is hidden inside the first display screen 200 and the second display screen 300; in the folded state, the cable protection structure 400 is stretched and exposed outside the first display screen 200 and the second display screen 300. Compared to existing display devices where the displays are detachably connected and the connecting cables are exposed, the present invention rotatably connects the first display screen 200 and the second display screen 300 and provides a cable protection structure 400. By unfolding the second display screen 300 and cooperating with the first display screen 200, a larger viewing area can be achieved. By folding the second display screen 300, the overall height of the display device can be reduced, making operation simple and improving transportation convenience. The cable protection structure 400 can wrap and protect the first connecting cable, preventing damage to the first connecting cable during transportation and use. It can also prevent the first connecting cable from being excessively stretched when the second display screen 300 rotates relative to the first display screen 200, reducing the risk of failure such as signal interruption and improving the reliability of the display device.

[0082] Please see Figure 4 and Figure 5 In one embodiment, the cable protection structure 400 includes a first cable chain 410 and an elastic part 420 connected to each other. The elastic part 420 is connected to the interior of one of the first display screen 200 and the second display screen 300 and is axially extendable. One end of the first cable chain 410 extends movably into the interior of one of the first display screen 200 and the second display screen 300 and is connected to the elastic part 420. The other end of the first cable chain 410 is connected to the interior of the other of the first display screen 200 and the second display screen 300. The first cable chain 410 is hollow to form a cable passage, through which a first connecting cable passes. In the unfolded state, the elastic part 420 retracts to hide the first cable chain 410 inside the first display screen 200 and the second display screen 300. In the folded state, the elastic part 420 stretches, and part of the first cable chain 410 is exposed outside the first display screen 200 and the second display screen 300.

[0083] In one embodiment, the elastic part 420 is connected inside the first display screen 200, and the end of the first cable chain 410 away from the elastic part 420 is connected inside the second display screen 300. In another embodiment, the elastic part 420 is connected inside the second display screen 300, and the end of the first cable chain 410 away from the elastic part 420 is connected inside the first display screen 200. Both embodiments can achieve the protection of the first connecting cable. The following description uses the example of the elastic part 420 being connected inside the first display screen 200 and the end of the first cable chain 410 away from the elastic part 420 being connected inside the second display screen 300.

[0084] Specifically, the ends of the elastic part 420 and the first cable chain 410 that are far apart from each other are respectively positioned with the first fixed frame 210 and the second fixed frame 310. In the folded and unfolded states, the elastic part 420 remains within the first cavity, allowing the first cable chain 410 to protect the first connecting cable. The elastic part 420 has good elastic deformation capability, enabling axial extension and retraction and allowing the first cable chain 410 to move and change accordingly during folding and unfolding, thus adapting to the state switching of the second display screen 300. The elastic part 420 can be configured as a spring or rubber, etc., without limitation. The first cable chain 410 consists of multiple interconnected links that can rotate relative to each other, allowing the first cable chain 410 to bend and move flexibly. All links are hollow to form a cable passage, and the links can clamp the first connecting cable to prevent wear caused by movement of the first connecting cable relative to the links.

[0085] In one embodiment, the first connecting cable extends only into the interior of the first cable chain 410, and is located outside the elastic portion 420 and parallel to its axial direction. In another embodiment, the elastic portion 420 is hollow and communicates with the first cable chain 410, forming a cable passage together, with the first connecting cable located inside the elastic portion 420 and the first cable chain 410. When the first connecting cable is located inside the elastic portion 420 and the first cable chain 410, and one end of the first connecting cable inside the elastic portion 420 is retractable, space can be utilized more efficiently. This also ensures that the first connecting cable always maintains a suitable length, preventing tangling due to excessive length or pulling due to excessive length, thus improving cable lifespan and enhancing the stability and reliability of the display device in frequently changing application scenarios.

[0086] Please see Figure 5 In one embodiment, a limiting structure is provided inside the first display screen 200 and / or the second display screen 300 to restrict the movement of the first drag chain 410 and the elastic part 420.

[0087] Specifically, in one embodiment, the first display screen 200 has a limiting structure inside to restrict the movement of the first cable chain 410 and the elastic part 420. Specifically, the limiting structure includes a limiting shaft and a first limiting bracket 230. The limiting shaft passes through the elastic part 420, with one end connected to the first fixed frame 210 and the other end connected to the first cable chain 410. The limiting shaft guides the extension and retraction direction of the elastic part 420, preventing it from shifting during extension and retraction, and ensuring that the elastic part 420 always extends and retracts axially. The first limiting bracket 230 is fixed to the first fixed frame 210 and has a first limiting groove. One end of the first cable chain 410 extending into the first cavity is movably engaged in the first limiting groove to prevent the first cable chain 410 from shifting, ensuring that the first cable chain 410 always moves axially along the elastic part 420. This ensures the overall stability of the cable protection structure 400, effectively extending the service life of the first connecting cable and reducing signal transmission problems caused by loosening or wear.

[0088] In one embodiment, the second display screen 300 has an internal limiting structure to restrict the movement of the first cable chain 410. Specifically, the limiting structure includes a second limiting bracket 330, one side of which is fixed to the second fixing frame 310 and the other side has a second limiting groove. The first cable chain 410 is engaged in the second limiting groove to prevent the first cable chain 410 from shifting or shaking, thus ensuring the overall stability of the cable protection structure 400 and effectively extending the service life of the first connecting cable.

[0089] Of course, in other embodiments, the limiting structure may also include elastic buckles, limiting protrusions, or positioning frames, etc., which are not limited here.

[0090] Please see Figure 2 In one embodiment, the first display screen 200 is provided with a first connecting end 211, and the second display screen 300 is provided with a second connecting end 311 rotatably connected to the first connecting end 211. The cable protection structure 400 movably passes through the first connecting end 211 and the second connecting end 311. The display screen device also includes a connecting structure 500, which rotatably connects the first connecting end 211 and the second connecting end 311. In the unfolded state, the connecting structure 500 is hidden inside the first display screen 200 and the second display screen 300 so that the first connecting end 211 and the second connecting end 311 fit together.

[0091] Specifically, the first fixing frame 210 is provided with a first connecting end 211, and the second fixing frame 310 is provided with a second connecting end 311. The first connecting end 211 is provided with a first through hole communicating with the first cavity, and the second connecting end 311 is provided with a second through hole communicating with the second cavity. The first cable chain 410 extends out of the first cavity through the first through hole and extends into the second cavity through the second through hole. In the folded state, the first through hole and the second through hole are opposite and fit together, and the first cable chain 410 is hidden in the first cavity and the second cavity; in the unfolded state, the first through hole and the second through hole are located on the same horizontal plane, and the middle part of the first cable chain 410 is exposed between the first through hole and the second through hole.

[0092] The first connecting end 211 has a first mounting hole communicating with the first cavity, and the second connecting end 311 has a second mounting hole communicating with the second cavity. One end of the connecting structure 500 extends into the first cavity through the first mounting hole and connects to the inside of the first connecting end 211. The other end of the connecting structure 500 extends into the second cavity through the second mounting hole and connects to the inside of the second connecting end 311. In the unfolded state, the first mounting hole and the second mounting hole are opposite and fit together. The connecting structure 500 is hidden in the first cavity and the second cavity through the first mounting hole and the second mounting hole, so that the first connecting end 211 and the second connecting end 311 fit together, avoiding gaps between the first display screen 200 and the second display screen 300, which would affect the display integrity and effect. At the same time, it avoids interference with external operation caused by the connecting structure 500 and the risk of damage that may be caused by the exposed connecting structure 500, extending the service life of the connecting structure 500, and thus ensuring the overall stability and reliability of the display device.

[0093] Please see Figure 4 and Figure 5 In one embodiment, the connection structure 500 includes a first hinge block 510, a second hinge block 520, a first connector 530, and a second connector 540. The first hinge block 510 is disposed inside the first connecting end 211; the second hinge block 520 is disposed inside the second connecting end 311; the first connector 530 passes through the first connecting end 211 and the second connecting end 311, with one end of the first connector 530 slidably connected to the first hinge block 510 and the other end hinged to the second hinge block 520. The second connector 540 passes through the first connector 211 and the second connector 311. One end of the second connector 540 is slidably connected to the second hinge block 520, and the other end is hinged to the first hinge block 510. The middle part of the second connector 540 is hinged to the middle part of the first connector 530. In the unfolded state, the first connector 530 and the second connector 540 are both hidden inside the first hinge block 510 and the second hinge block 520, so that the first connector 211 and the second connector 311 fit together.

[0094] Specifically, the first hinge block 510 is located inside the first connecting end 211 and has a first receiving groove, which is opposite to the first mounting hole. The second hinge block 520 is located inside the second connecting end 311 and has a first receiving groove, which is opposite to the second mounting hole. The opposite ends of the first connecting member 530 and the second connecting member 540 respectively pass through the first mounting hole and the second mounting hole and extend into the first receiving groove and the second receiving groove, respectively. The first receiving groove has a first groove on its wall. One end of the first connecting member 530 has a first hinge shaft, which is slidably disposed in the first groove so that one end of the first connecting member 530 is slidably connected to the first hinge block 510. The other end of the first connecting member 530 is hinged to the second hinge block through a first rotating shaft. Similarly, the second hinge block 520 is provided with a second groove, and one end of the second connector 540 is provided with a second hinge shaft. The second hinge shaft is slidably disposed in the second groove, so that one end of the second connector 540 is slidably connected to the second hinge block 520, and the other end of the second connector 540 is hinged to the first hinge block through a second rotating shaft. Further, the first connector 530 includes a first connecting arm and a second connecting arm that are bent and connected, and the second connector 540 includes a third connecting arm and a fourth connecting arm that are bent and connected. The connection point of the first connecting arm and the second connecting arm is the middle part of the first connector 530, and the connection point of the third connecting arm and the fourth connecting arm is the middle part of the second connector 540. The middle part of the first connector 530 is rotatably connected to the middle part of the second connector 540 through a third rotating shaft.

[0095] In the unfolded state, the first hinge block and the second hinge block face each other, with the second hinge block positioned above the first hinge block. The first connector 530 and the second connector 540 are completely concealed within the first and second receiving grooves, allowing the first connecting end 211 and the second connecting end 311 to fit together, meaning the included angle between the first connecting end 211 and the second connecting end 311 is approximately 0 degrees, ensuring display integrity and effect. Multiple sets of the connecting structure 500 can be provided to further enhance the stability and reliability of the connection between the first display screen 200 and the second display screen 300, ensuring that the connecting structure 500 will not loosen or be damaged during frequent unfolding and folding operations, thereby guaranteeing the overall stable operation of the display device. No specific limit is placed on the number of connecting structures 500.

[0096] Please see Figure 3 , Figure 6 and Figure 7 In one embodiment, the display device further includes a first locking structure disposed between the first display screen 200 and the second display screen 300. In the folded state, the first locking structure can lock the second display screen 300 to the first display screen 200.

[0097] In one embodiment, the first locking structure includes a plug 611, a socket 612, and an elastic element. The plug 611 is located at the end of the first display screen 200 away from the second display screen 300, and limiting recesses are provided on opposite sides of the plug 611. The socket 612 is located at the end of the second display screen 300 away from the first display screen 200, and the socket 612 has a slot for insertion into the plug 611. The elastic element is movably protruding from the groove wall of the slot, and the elastic element can extend into the limiting recess and abut against the limiting recess to restrict the plug 611 to the socket 612.

[0098] The plug 611 is located at the end of the second fixing frame 310 away from the first fixing frame 210, and the socket 612 is located at the end of the first fixing frame 210 away from the second fixing frame 310. In the folded state, the plug 611 can be inserted into the slot of the socket 612 to lock the end of the second fixing frame 310 that is not connected to the first fixing frame 210. The socket 612 has a mounting groove that communicates with the slot. The mounting groove is located on the groove wall of the slot, and an elastic element is movably disposed within the mounting groove. Furthermore, the first locking structure also includes a movable member 613, which is slidably disposed within the mounting groove and abuts against the end of the elastic element facing the slot axis. The elastic element can drive the movable member 613 to move closer to the slot axis to extend into the limiting recess and abut against it, so as to stably lock the second display screen 300 against the first display screen 200 in the folded state, preventing the second display screen 300 from shaking relative to the first display screen 200 and causing damage during transportation. Under a certain external force, the limiting recess can push the movable member 613 to overcome the resistance of the elastic element and move away from the slot axis, facilitating the plug 611 to leave the slot, thereby unlocking the second display screen 300 from the first display screen 200. The operation is simple and quick. The cooperation between the elastic element and the movable member 613 can also play a certain buffering role, reducing the damage to the display device caused by impact during locking and unlocking, and further extending the service life of the display device. The elastic element can be configured as a spring or silicone, etc., without limitation. Furthermore, the parts of the movable member 613 that come into contact with the limiting recess are all made of arc surfaces, so that the movable member 613 can extend into the limiting recess or the limiting recess can separate from the movable member 613 more smoothly, reducing jamming and improving the convenience and smoothness of locking and unlocking operations.

[0099] Please see Figure 4 In one embodiment, the display device further includes a second locking structure disposed between the first display screen 200 and the second display screen 300. In the unfolded state, the second locking structure can lock the second display screen 300 to the first display screen 200.

[0100] The first connecting end 211 is provided with a first locking port communicating with the first cavity, and the second connecting end 311 is provided with a second locking port communicating with the second cavity. The second locking structure includes a control wheel, a locking hook 621, and a locking rod 622. The control wheel is rotatably mounted on the first fixed frame 210 and located within the first cavity. The locking hook 621 is opposite to the first locking port, and one end of the locking hook 621 is eccentrically mounted on the control wheel. The locking rod 622 is mounted on the second fixed frame 310 and located within the second cavity, and the locking rod 622 is opposite to the second locking port. In the unfolded state, the first locking port and the second locking port are opposite each other. Rotating the control wheel can drive the locking hook 621 to rotate, so that the locking hook 621 extends into the second cavity through the first locking port and the second locking port and hooks the locking rod 622, thereby locking the second display screen 300 to the first display screen 200, thus preventing the second display screen 300 from shaking or moving at will, and ensuring the overall stability and display effect of the display device. Additionally, simply rotating the control wheel in the opposite direction will disengage the locking hook 621 from the locking rod 622, releasing the lock on the second display screen 300 and facilitating its folding. The control wheel has an operating groove at its axis, and the first fixing frame 210 has an operating opening opposite the operating groove on its side facing away from the first screen body 220. This allows users to easily rotate the control wheel using tools inserted through the operating opening into the operating groove, making operation simple and effortless. Multiple sets of the second locking structure can be provided to further enhance the stability of the connection between the first display screen 200 and the second display screen 300 in the unfolded state. The specific number of the second locking structures is not limited here. Of course, in other embodiments, the second locking structure can also be an electromagnetic latch or a snap-lock structure, etc., without limitation.

[0101] Please see Figures 8 to 10 In one embodiment, the display device further includes a control box 700, which is disposed on the back of the first display screen 200 and electrically connected to the first connecting cable. The support frame 100 includes a base 110, a column 120, a controller 140, an electric lifting column 130, and a receiving box 170. The column 120 is disposed on the base 110 and is hollow. The controller 140 is disposed on the base 110 and is electrically connected to the control box 700 through a second connecting cable 820. The electric lifting column 130 is vertically movable inside the column 120 and is electrically connected to the controller 140. The electric lifting column 130 is driven to connect to the first display screen 200 to drive the first display screen 200 to rise and fall. The receiving box 170 is disposed on the electric lifting column 130 and extends along the lifting direction. The middle part of the second connecting cable 820 is retractably disposed in the receiving box 170.

[0102] The control box 700 includes a box body 710, a first cover plate 720, and a power module 740, an antenna module 730, a control board 750, a wired cascading interface board 760, a signal connector 770, and a power connector 780 disposed within the box body 710. The first cover plate 720 is rotatably connected to the box body 710 to cover or expose the various modules inside the box body 710. The antenna module 730 and the power module 740 are both electrically connected to the control board 750. The power module 740 is used to supply power to the control board 750, and the antenna module 730 is used to receive signals. The control board 750 is used to control and send data to the first screen 220 and the second screen 320. The wired cascading interface board 760 is used to connect other display devices to achieve multi-screen linkage display. The signal connector 770 is used to transmit signals and power to external devices to ensure that the display devices can stably receive and display various information. The power connector 780 is used to connect other power boards to provide power support to the display devices and ensure their normal operation. The housing 710 is provided with a fixing hole and a cable inlet hole. The housing 710 is connected to the side of the first fixing frame 210 facing away from the first screen 220 through the fixing hole. One end of the first connecting cable extends into the housing 710 through the cable inlet hole and is electrically connected to the control board 750.

[0103] The base 110 provides stable support for the entire support frame 100. The base 110 has an installation space for mounting and accommodating the controller 140. The support frame 100 also includes a second cover plate 160, which is detachably connected to the base 110 to cover or expose the controller 140. Two columns 120 are spaced apart on the base 110. Each column 120 contains an electric lifting column 130. The electric lifting column 130 is telescopic, with its end extending out of the column 120 and connected to the side of the first fixing frame 210 facing away from the first screen body 220 via a fixing block. The controller 140 can control the start, stop, and extension / retraction stroke of the electric lifting column 130, thereby controlling the raising and lowering of the first display screen 200 and the second display screen 300. Furthermore, a control button 150 is provided on the side of the base 110. The control button 150 is electrically connected to the controller 140, allowing users to manually control the raising and lowering operation of the electric lifting column 130 via the control button 150. In the unfolded state, controlling the electric lifting column 130 allows for flexible adjustment of the height of the first display screen 200 and the second display screen 300, improving ease of use and reliability. In the folded state, controlling the electric lifting column 130 allows the height of the first display screen 200 to be reduced to the minimum, further reducing the overall height of the display device and thus further improving the ease of transporting the display device.

[0104] The two ends of the second connecting cable 820 are electrically connected to the power module 740 and the controller 140 of the control box 700, respectively, so that the power module 740 can supply power to the controller 140. The housing box 170 is used to store and protect the second connecting cable 820, and the middle part of the second connecting cable 820 is retractable. When the electric lifting column 130 drives the first display screen 200 and the second display screen 300 to rise, the second connecting cable 820 is stretched so that the middle part of the second connecting cable 820 slides and extends within the housing box 170 to ensure that the connection does not break; when the electric lifting column 130 drives the first display screen 200 and the second display screen 300 to fall, the middle part of the second connecting cable 820 retracts within the housing box 170 to prevent the second connecting cable 820 from being scattered outside.

[0105] Please see Figure 8 In one embodiment, the column 120 is provided with a cable tray, and the display device also includes a second drag chain 810 sleeved around the second connecting cable 820, one end of which is movably stored in the receiving box 170, and the other end of the second drag chain 810 is provided in the cable tray; the electric lifting column 130 rises relative to the column 120, which can drive the receiving box 170 to rise, so as to drive the second drag chain 810 to extend out of the receiving box 170 and unfold along the cable tray.

[0106] The cable routing channel extends along the height direction of the column 120, i.e., along the lifting direction. The width and depth of the cable routing channel are adapted to the width and thickness of the second cable chain 810. The receiving box 170 is positioned close to the column 120 on the side facing it and has a cable routing opening opposite the cable routing channel. The second cable chain 810 extends into the cable routing channel through the cable routing opening. Furthermore, a positioning shaft is provided inside the receiving box 170 to restrict and guide the movement of the second cable chain 810, preventing it from winding and affecting the extension and retraction of the second connecting cable 820. A limiting member is provided at the cable routing opening to limit and support the second cable chain 810, preventing it from detaching from the cable routing opening during extension or retraction, and ensuring that the second cable chain 810 can stably unfold along the cable routing channel. The limiting member can be a limiting frame, etc., and is not limited here. The end of the second cable chain 810 furthest from the receiving box 170 is connected to the cable tray and positioned close to the base 110 to guide the second connecting cable 820 to the base 110. The base 110 is provided with a corresponding through hole communicating with the installation space, so that the second connecting cable 820 can pass through the through hole and be electrically connected to the controller 140. The structure of the second cable chain 810 is the same as that of the first cable chain 410, and will not be described again here.

[0107] When the electric lifting column 130 drives the first display screen 200 and the second display screen 300 to rise, the receiving box 170 rises synchronously, and the middle part of the second connecting cable 820 is stretched. At the same time, the second drag chain 810 is driven by the receiving box 170, extends out of the receiving box 170 and gradually unfolds along the cable tray. The end of the second drag chain 810 away from the receiving box 170 is fixed in the cable tray, so that the second connecting cable 820 extends stably along the cable tray under the protection of the second drag chain 810. When the electric lifting column 130 drives the first display screen 200 and the second display screen 300 to fall, the receiving box 170 falls synchronously, and the middle part of the second connecting cable 820 retracts and drives the second drag chain 810 to move, so that the second drag chain 810 is gradually retracted into the receiving box 170 along the cable tray, ensuring that the second connecting cable 820 is always in an orderly and protected state, avoiding damage caused by the second connecting cable 820 being scattered, overstretched or twisted.

[0108] The present invention also proposes a storage box 900 for storing the display devices of the above embodiments, wherein the second display screen 300 of the display device is in a folded state.

[0109] Please see Figures 11 to 14 In one embodiment, the storage box 900 includes a box body 910, a cover 920, and a protective pad 950. The box body 910 has a storage cavity and a side opening communicating with the storage cavity. The cover 920 is rotatably connected to the box body 910 and has an open state that exposes the side opening and a closed state that covers the side opening. The protective pad 950 is disposed on the cavity wall of the storage cavity and can abut against the display device to restrict the movement of the display device in the storage cavity. In the open state, the cover 920 is inclined relative to the box body 910 and forms a guide surface 921, and the display device can enter the side opening along the guide surface 921.

[0110] The height of the storage cavity of the housing 910 is adapted to the height of the display device in its folded state, so as to just accommodate the display device in the folded state. The side of the housing 910 has a side opening, and one end of the cover 920 is rotatably connected to the bottom of the housing 910, so that in the open state, the end of the cover 920 away from the housing 910 can abut against the ground, making the cover 920 inclined relative to the housing 910 and forming a guide surface 921, facilitating the first roller 180 of the display device to slide into the storage cavity along the guide surface 921 through the side opening. The bottom of the housing 910 has a second roller 960 to facilitate the movement of the entire storage box 900, improving handling efficiency and convenience. In addition, the second roller 960 creates a gap between the bottom of the housing 910 and the ground, allowing the cover 920 to better abut against the ground in the open state, forming a guide surface 921 with a more suitable slope, further facilitating the sliding of the display device into the storage cavity. Furthermore, the cover 920 is provided with a limiting plate 930 to restrict and guide the rolling of the first roller 180 on the guide surface 921, ensuring that the display device accurately enters the storage cavity. The housing 910 is also provided with a transition plate 940, which is located on the side opening wall. The end of the transition plate 940 near the cover 920 is inclined to ensure that the first roller 180 can smoothly transition between the guide surface 921 and the cavity wall of the storage cavity, preventing the first roller 180 from getting stuck or deviating when entering or leaving the storage cavity. Furthermore, a third locking structure 970 is provided between the cover 920 and the housing 910. In the closed state, the third locking structure 970 can lock the cover 920 to the housing 910, preventing the cover 920 from being opened arbitrarily. The third locking structure 970 can be a snap-on lock, a magnetic lock, or a pin lock, etc., and is not limited here.

[0111] Multiple protective pads 950 are provided on the cavity wall of the storage cavity and the guide surface 921 of the cover 920. These protective pads 950 correspond to the sides of the base 110 and the top of the first display screen 200. Each protective pad 950 has a groove with a different groove size at different locations to fit various parts of the display device. This ensures that when the display device is stored in the storage cavity, each protective pad 950 fits snugly against its respective position, preventing the display device from swaying and colliding with the housing 910. The protective pads 950 are made of soft and elastic materials, such as sponge or rubber, effectively cushioning the display device from collisions with the cavity wall during storage and preventing damage. The protective pads 950 can be connected to the cavity wall via adhesive or snap-fit ​​methods. The thickness of the protective pads 950 can be adjusted according to actual needs, ensuring cushioning without excessively occupying space in the storage cavity; therefore, no restrictions are placed on this aspect. Furthermore, the storage box 900 may also include a handle, which may be located on the sides or top of the box body 910. The handle is located on the outside of the box body 910 to facilitate the user to move the storage box 900.

[0112] Thus, the storage box 900 provides a safe and convenient storage space for the display device. By storing the folded display device inside the storage box 900, it not only effectively protects the display device from collisions and damage during transportation or storage, but also greatly saves space, facilitating storage and handling. It provides a safe and convenient storage space for the display device, making its storage and transportation easier.

[0113] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. A display device, characterized by comprising: The display screen device comprises: a support frame; a first display screen arranged on the support frame; a second display screen rotatably connected with the first display screen to have an unfolded state in which the second display screen is located above the first display screen and a folded state in which the second display screen covers the display surface of the first display screen; a first connecting cable electrically connecting the first display screen and the second display screen; and a cable protection structure sleeved on the outer periphery of the first connecting cable and capable of axial extension and contraction, one end of the cable protection structure being connected to the interior of the first display screen and the other end of the cable protection structure being connected to the interior of the second display screen. In the unfolded state, the cable protection structure is retracted and hidden in the interiors of the first display screen and the second display screen; in the folded state, the cable protection structure is stretched and exposed outside the first display screen and the second display screen. The cable protection structure comprises a first drag chain and an elastic part connected with each other, the elastic part being connected to the interior of one of the first display screen and the second display screen and capable of axial extension and contraction, one end of the first drag chain being movably inserted into the interior of one of the first display screen and the second display screen and connected with the elastic part, the other end of the first drag chain being connected to the interior of the other of the first display screen and the second display screen, the first drag chain being hollow to form a wire passage, the first connecting cable penetrating through the wire passage.

2. The display device of claim 1, wherein, In the unfolded state, the elastic part is retracted to make the first drag chain hidden in the interiors of the first display screen and the second display screen. In the folded state, the elastic part is stretched, and the first drag chain is partially exposed outside the first display screen and the second display screen. The interior of the first display screen and / or the interior of the second display screen is provided with a limiting structure to limit the movement of the first drag chain and the elastic part.

3. The display device of claim 2, wherein, The first display screen is provided with a first connecting end, the second display screen is provided with a second connecting end rotatably connected with the first connecting end, and the cable protection structure movably penetrates through the first connecting end and the second connecting end.

4. The display device of claim 1, wherein The display screen device further comprises a connecting structure rotatably connecting the first connecting end and the second connecting end, in the unfolded state, the connecting structure being hidden in the interiors of the first display screen and the second display screen to make the first connecting end and the second connecting end abut. The connecting structure comprises:

5. The display device of claim 4, wherein, a first hinge block arranged on the inner side of the first connecting end; a second hinge block arranged on the inner side of the second connecting end; a first connecting member penetrating through the first connecting end and the second connecting end, one end of the first connecting member being slidably connected with the first hinge block and the other end of the first connecting member being hingedly connected with the second hinge block; and a second connecting member penetrating through the first connecting end and the second connecting end, one end of the second connecting member being slidably connected with the second hinge block and the other end of the second connecting member being hingedly connected with the first hinge block, the middle part of the second connecting member being hingedly connected with the middle part of the first connecting member. ​ In the unfolded state, the first connecting member and the second connecting member are hidden in the first hinge block and the second hinge block, so that the first connecting end and the second connecting end are attached.

6. The display device of claim 1, wherein The display device further comprises: A first locking structure is arranged between the first display screen and the second display screen, and in the folded state, the first locking structure can lock the second display screen to the first display screen; and A second locking structure is arranged between the first display screen and the second display screen, and in the unfolded state, the second locking structure can lock the second display screen to the first display screen.

7. The display device of claim 6, wherein, The first locking structure comprises: A plug is arranged at one end of the first display screen away from the second display screen, and limit recesses are arranged on opposite sides of the plug; A socket is arranged at one end of the second display screen away from the first display screen, and the socket is provided with a socket slot for plug-in connection with the plug; and An elastic element is movably arranged on the slot wall of the socket slot, and the elastic element can extend into the limit recess and abut against the limit recess to restrict the plug in the socket.

8. The display device of claim 1, wherein The display device further comprises a control box arranged on the back of the first display screen and electrically connected with the first connecting cable, and the support frame comprises: A base; A stand column arranged in the base and hollowed; A controller arranged in the base, the controller being electrically connected with the control box through a second connecting cable; An electric lifting column movably arranged in the stand column and electrically connected with the controller, the electric lifting column being drivingly connected with the first display screen to drive the first display screen to move up and down; and A containing box arranged in the electric lifting column and extending in the lifting direction, and a middle part of the second connecting cable being movably arranged in the containing box.

9. The display device of claim 8, wherein, The stand column is provided with a wiring slot, and the display device further comprises a second drag chain sleeved on the outer periphery of the second connecting cable, one end of the second drag chain being movably arranged in the containing box, and the other end of the second drag chain being arranged in the wiring slot. When the electric lifting column moves up relative to the stand column, the containing box can be driven to move up, so that the second drag chain extends out of the containing box and is unfolded along the wiring slot.

10. A housing case for housing the display device according to any one of claims 1 to 9, wherein The second display screen of the display device in the folded state comprises: A box body provided with a receiving cavity and a side opening communicating with the receiving cavity; A cover body rotatably connected with the box body and having an opened state exposing the side opening and a closed state covering the side opening; and A protective pad arranged on the cavity wall of the receiving cavity and capable of abutting against the display device to limit the movement of the display device in the receiving cavity; In the opened state, the cover body is inclined relative to the box body and forms a guide surface, and the display device can enter the side opening along the guide surface.

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