Display equipment with novel structure

Abstract

The utility model discloses display equipment with a novel structure. The display equipment comprises a base, a rotating arm and a screen, the pivot end of the rotating arm is rotationally connected with the base, and the free end of the rotating arm is rotationally connected with the side edge of the screen, so that the screen at least has a first state and a second state and can be switched between the at least two states; when the screen is in a first state, the display surface of the screen is attached to the inner side surface of the base; when the screen is in the second state, the back face of the screen is attached to the inner side face of the base. According to the utility model, the rotating arm is respectively connected with the base and the screen, the foldable screen is rotated through the rotating arm so as to realize a storage function, and meanwhile, the screen also has a multi-angle adjustment or 180-degree reverse rotation function so as to adapt to different use scenes.

Description

Technical Field

[0001] This utility model relates to the field of display device technology, and in particular to a display device with a novel structure. Background Technology

[0002] With the increasing prevalence of display devices in human-computer interaction, mobile office, and other application scenarios, users' demands for the portability and adjustability of display devices are growing. Traditional fixed display devices, although the screen can be adjusted to multiple angles, cannot be stored away, making them inconvenient to carry. When carried outdoors, the screen or speakers are easily damaged, and the screen cannot adapt to complex scenarios such as multi-posture hovering or 180° rotation. Existing technology also discloses a suitcase-integrated display device, which can store the screen inside the suitcase for easy carrying, but it only supports a single unfolded screen state with limited adjustable angles, and its adaptability to different scenarios is also limited, making it difficult to meet the flexible display needs in complex environments. Utility Model Content

[0003] The main objective of this invention is to provide a novel display device to solve the problem that existing display devices cannot simultaneously achieve screen storage and multi-angle adjustment.

[0004] To achieve the above objectives, this utility model proposes a novel display device, comprising:

[0005] Base;

[0006] A rotating arm, wherein the fulcrum end of the rotating arm is rotatably connected to the base; and

[0007] The screen has a free end of the rotating arm that is rotatably connected to the side of the screen so that the screen has at least a first state and a second state, and can switch between at least two states; when the screen is in the first state, the display surface of the screen is in contact with the inner side of the base; when the screen is in the second state, the back side of the screen is in contact with the inner side of the base.

[0008] Optionally, the fulcrum end of the rotating arm is connected to the base via a first damping shaft, the first damping shaft being used to resist the rotation of the rotating arm relative to the base; the free end of the rotating arm is connected to the screen via a second damping shaft, the second damping shaft being used to resist the rotation of the screen relative to the screen.

[0009] Optionally, the rotating arm rotates around its fulcrum end in an angle range of 0° to 320°, and the screen rotates around the free end of the rotating arm in an angle range of 0° to 330°.

[0010] Optionally, the base has a locking part on its side and the free end of the rotating arm has a locking groove that cooperates with the locking part. When the screen is in the first state or the second state, the locking part is engaged in the locking groove.

[0011] Optionally, a sliding groove is provided on the side of the base, and the extending direction of the sliding groove is consistent with that of the locking groove. The locking part is movably disposed in the sliding groove so that the locking part can be movably engaged in the locking groove.

[0012] Optionally, the base has a speaker assembly inside, and the inner side of the base has a sound-transmitting structure.

[0013] Optionally, in the width direction of the base, the horizontal distance from the connection point between the free end of the rotating arm and the screen to the center point of the base is defined as L, and when the screen is in the second state, the width of the exposed sound-emitting area is 2L.

[0014] Optionally, it includes at least two rotating arms, the two rotating arms are spaced apart, and the screen is rotatably disposed between the two rotating arms;

[0015] The two rotating arms are connected at their fulcrum ends by a connecting rod to form a handle;

[0016] Alternatively, a handle may be provided on one side of the base, and the handle may be located between the two rotating arms.

[0017] Optionally, a bracket is hinged to the side of the base away from the inner side.

[0018] Optionally, the surface of the base and / or the screen is coated with a waterproof coating.

[0019] This invention discloses a novel display device comprising a base, a rotating arm, and a screen. The screen is rotatably connected to the base via the rotating arm, allowing the screen to have at least a first state and a second state. In use, the first state is a retracted state, with the screen's display surface adhering to the inner side of the base, forming a closed box. The second state is an open state, with the screen rotated 180° to face the user, and the back of the screen adhering to the inner side of the base. This invention allows for screen retraction, making it easy to carry. The screen is fully embedded in the retracted state, preventing damage during transportation. Furthermore, the screen can be adjusted at multiple angles or rotated 180°, adapting to different postures and angles, thus improving scene adaptability. Attached Figure Description

[0020] 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.

[0021] Figure 1 This is a schematic diagram of the display device screen in a first state according to an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the display device screen in a first state according to another embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the display device screen in a second state according to an embodiment of the present invention;

[0024] Figure 4 for Figure 3 Side view;

[0025] Figure 5 for Figure 3 A schematic diagram of the structure of the display device's support bracket in its unfolded state;

[0026] Figure 6 This is a schematic diagram of the range of motion of the pivot end of the rotating arm in one embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of the free end movement range of the rotating arm in one embodiment of the present invention;

[0028] Figure 8 This is a schematic diagram of the display device screen in a third state according to an embodiment of the present invention;

[0029] Figure 9 This is a schematic diagram of the display device screen in a fourth state according to one embodiment of the present invention;

[0030] Figure 10 This is a schematic diagram of the rotating arm in one embodiment of the present invention;

[0031] Figure 11 This is a schematic diagram of the locking part in one embodiment of the present invention.

[0032] Explanation of icon numbers:

[0033] name label name label Display devices 100 Display surface 31 base 10 back 32 Inner side 10a Locking part 40 Rotary arm 20 Locking groove 50 Fulcrum end 21 Sound-permeable structure 60 Free end 22 handle 70 Screen 30 support 80

[0034] 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

[0035] 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 protection scope of the present utility model.

[0036] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0037] See Figures 1 to 11 As shown, in one embodiment of the present invention, a novel display device 100 includes: a base 10, a rotating arm 20, and a screen 30; the fulcrum end 21 of the rotating arm 20 is rotatably connected to the base 10, and the free end 22 of the rotating arm 20 is rotatably connected to the side of the screen 30, so that the screen 30 has at least a first state and a second state, and can switch between at least two states; when the screen 30 is in the first state, the display surface 31 of the screen 30 is attached to the inner side surface 10a of the base 10; when the screen 30 is in the second state, the back surface 32 of the screen 30 is attached to the inner side surface 10a of the base 10.

[0038] In the technical solution of this utility model, a novel display device 100 includes a base 10, a rotating arm 20, and a screen 30. The screen 30 is rotatably connected to the base 10 via the rotating arm 20, so that the screen 30 has at least a first state and a second state. In use, the first state is a retracted state, with the display surface 31 of the screen 30 adhering to the inner side 10a of the base 10, forming a closed box with the base 10. The second state is an open state, with the screen 30 rotated 180° to face the user, and the back surface 32 of the screen 30 adhering to the inner side 10a of the base 10. The display device 100 of this utility model allows for the retraction of the screen 30, making it easy to carry. In the retracted state, the screen 30 is completely embedded, preventing damage during transportation. Simultaneously, the screen 30 can be adjusted at multiple angles or rotated 180°, adapting to different postures and angles, thus improving scene adaptability.

[0039] Specifically, the base 10 of this application may also be equipped with electrical components such as a battery, processor, and control motherboard. The processor can be connected to the screen 30 via wired or wireless means to control the screen 30. If wired, the cable can be electrically connected to the screen 30 through the inside of the rotating arm 20. The side of the base 10 is provided with several interfaces and is covered by a removable silicone cover. The interfaces may include charging ports, USB ports, HDMI ports, etc. The screen 30 may be a regular display screen or an interactive touch screen. Preferably, the outer shell of the base 10 and the screen 30 is designed in the shape of a box. This outer structure is an integrated design with the base 10 and the screen 30. It can be understood that the back 32 of the screen 30 is the outer surface of the outer shell. When the screen 30 is in the first state (stored state), the screen 30 and the base 10 are closed to form a box. In particular, the inner side 10a of the base 10 is recessed inward and slightly lower than the outer shell of the base 10, while the display screen of the screen 30 is protruding outward and slightly higher than the outer shell of the screen 30. In the stored state, the display surface 31 of the screen 30 is embedded in the recessed surface of the base 10, and then fits against the inner side 10a of the base 10, which can further protect the screen 30 and prevent the screen 30 from being damaged during transportation. Furthermore, the corners of the outer shell of the base 10 and the screen 30 are equipped with anti-collision edging. The corners can be fully or partially covered with materials such as metal and silicone, or a buffer layer can be embedded in the corners to achieve the protective function. This design has several advantages. First, by integrating electrical components such as batteries inside the base 10, the electrical components can be effectively protected. Furthermore, the large internal space of the base 10 allows for the installation of a larger capacity battery, thereby improving the battery life of the display device 100. Second, the integrated design of the base 10, screen 30, and housing enables the display device 100 to be waterproof. Of course, at the expense of some waterproof performance, the housing can also be assembled in separate parts to save on production costs. This embodiment is not limited to this, and all of the above are within the protection scope of this utility model. It should be noted that, in this embodiment, a connecting part is provided on one long side of the base 10, and the fulcrum end 21 of the rotating arm 20 is rotatably connected to the connecting part. Of course, a mounting hole or connecting part can also be provided on the wide side of the base 20, and the fulcrum end 21 of the rotating arm 20 can be rotatably connected to the mounting hole or connecting part. The long or wide side of the base to which the rotating arm 20 is connected is also determined according to the actual shape of the screen and the rotation requirements. As long as the fulcrum end 21 of the rotating arm 20 can be rotatably connected to the base, it is not limited here. The structure of the rotating arm 20 is designed as a rod similar to the shape of "~". With the connection point between the fulcrum end 21 and the free end 22 of the rotating arm 20 remaining unchanged, the rotating arm 20 can be designed as other shapes, such as a straight rod. The material of the rotating arm 20 can also be carbon fiber composite material or metal material according to actual needs, selectively achieving a lightweight or high-strength structure. This embodiment is not limited to this, and all of the above are within the protection scope of this utility model.

[0040] The screen 30 in this embodiment has multiple states due to the movement of the rotating arm 20. Some of these states are described below: Figure 1 As shown, this is the first state (storage state), in which the display device 100 is in a box-like form, making it easy to carry outdoors; as... Figure 3 As shown, this is the second state (reverse mode), in which the screen 30 is rotated 180° relative to the first state, suitable for outdoor KTVs, live streaming monitoring, and other scenarios; as shown... Figure 8 As shown, this is the third state (normal mode). In this state, the display device 100 resembles a laptop, suitable for everyday use. Figure 9 As shown, this is the fourth state (low-profile mode). In this state, the screen 30 is rotated 90° relative to the second state and is in a flat position, supported by the base 10, suitable for desktop use. It should be noted that the screen 30 can display at any angle within its movement stroke through the fulcrum end 21 and / or free end 22 of the movable rotating arm 20. These angles are not listed here, and this embodiment is not limited thereto. All of the above are within the protection scope of this utility model.

[0041] See Figures 1 to 11As shown, further, in one embodiment of this utility model, the fulcrum end 21 of the rotating arm 20 is connected to the base 10 via a first damping shaft (not shown in the figure), which is used to resist the rotation of the rotating arm 20 relative to the base 10; the free end 22 of the rotating arm 20 is connected to the screen 30 via a second damping shaft (not shown in the figure), which is used to resist the rotation of the screen 30 relative to itself. Specifically, the damping shaft slows down the rotational speed through controllable resistance, generating resistance during rotation to counteract the rotational force generated by the rotating arm 20 and the screen 30 due to their own weight or other external forces. This means that a certain force needs to be applied to rotate the rotating arm 20 and the screen 30 during use, preventing the rotating arm 20 and the screen 30 from impacting, colliding, or vibrating due to rapid movement or inertia. At the same time, by setting the damping shaft, the screen 30 can be suspended at any angle within its active stroke without the need for additional fixing devices, meeting the needs of users for different viewing angles. It should be noted that the damping shaft can employ hydraulic damping, friction damping, or magnetic damping; alternatively, two or more first damping shafts and second damping shafts can be set to work together to counteract the rotational force of the rotating arm 20 and / or the screen 30 within its stroke range. In another embodiment, the first damping shaft is set as a spring shaft. Since the connection between the fulcrum end 21 of the rotating arm 20 and the base 10 is typically used to open or close the screen 30, by setting a spring shaft connection, automatic opening and closing assistance can be achieved through the elastic potential energy of the spring during opening and closing, saving manual operation. That is, when the fulcrum end 21 of the rotating arm 20 rotates and drives the screen 30 to open to a certain angle, the spring releases energy to counteract the gravity of the screen 30, assisting the screen 30 to open or close automatically, making it more convenient for the user to open and close the screen 30. This embodiment is not limited thereto, and all of the above are within the protection scope of this utility model.

[0042] See Figures 1 to 11 As shown, further, in one embodiment of this utility model, the rotation angle range of the rotating arm 20 about its fulcrum end 21 is 0° to 320°, and the rotation angle range of the screen 30 about the free end 22 of the rotating arm 20 is 0° to 330°. Specifically, in this embodiment, both the fulcrum end 21 and the degree of freedom of the rotating arm 20 have a single degree of freedom. The range of motion of the fulcrum end 21 is α, and the range of motion of the free end 22 is β. As an example, the range of motion of α is 0° to 320°. Figure 6 As shown, angle α can be considered as the opening angle of screen 30; the range of motion of β is 0° to 330°, as... Figure 7As shown, angle β can be considered as the display angle of screen 30; by coordinating the rotation arm 20 and screen 30 to adjust the size of angle α and angle β, screen 30 can be switched between the first state, the second state, the third state and the fourth state, or screen 30 can be adjusted to other angles for hovering display; it should be noted that the above angle is only a preferred option in this embodiment. In other embodiments, other angles may be used, which can be adaptively adjusted according to the different shapes and sizes of base 10, rotation arm 20 and screen 30.

[0043] See Figures 1 to 11 As shown, further, in one embodiment of this utility model, the base 10 is provided with a locking part 40 on its side, and the free end 22 of the rotating arm 20 is provided with a locking groove 50 that cooperates with the locking part 40. When the screen 30 is in the first state or the second state, the locking part 40 is engaged in the locking groove 50. Preferably, in this embodiment, the end face of the locking part 40 is provided with a protrusion, and the free end 22 of the rotating arm 20 is provided with a locking groove 50 from the end to the extension direction of the rotating arm 20. The width of the locking groove 50 gradually decreases from the end to the extension direction of the groove, making it easier for the protrusion to be engaged in the locking groove 50. It can be understood that since the rotating arm 20 can rotate around its fulcrum end 21, when the screen 30 is moved to the second state, the rotating arm 20 rotates to fit the locking groove 50 into the protrusion, so as to realize the locking engagement between the rotating arm 20 and the base 10. It should be noted that the locking groove 50 can also be configured as a socket, and the locking part 40 can be configured as a pin, dowel, or other structure that engages with the socket. When the rotating arm 20 is in position, the two are inserted together or press-fitted to lock the rotating arm 20. Alternatively, the locking groove 50 can be configured as a snap-fit ​​groove, and the locking part 40 can be configured as a snap-fit ​​or latch. By engaging the two, the rotating arm 20 is locked. Alternatively, the locking part 40 and the locking groove 50 can be configured as magnetic structures, such as magnets. When the rotating arm 20 is in position, the rotating arm 20 and the locking part 40 are magnetically attracted to each other to lock the rotating arm 20. This embodiment is not limited to these, and all of the above are within the protection scope of this utility model. Since the locking between the rotating arm 20 and the base 10 is achieved by setting the locking part 40 and the locking groove 50, when the screen 30 is in the second state, the display device 100 is not easily affected by external forces when it is mounted in a vehicle or in other moving states, which could cause the screen 30 to shift or shake.

[0044] See Figures 1 to 11As shown, in one embodiment of the present invention, a sliding groove is provided on the side of the base 10, and the extending direction of the sliding groove is consistent with that of the locking groove 50. The locking part 40 is movably disposed in the sliding groove so that the locking part 40 can be movably engaged in the locking groove 50. Specifically, in this embodiment, the locking part 40 includes a seat and a "T"-shaped protrusion. The "T"-shaped structure design makes it difficult for the protrusion to fall off after it is engaged in the locking groove 50. The seat is movably disposed in the sliding groove (not shown in the figure) on the side of the base 10. By setting the sliding groove, the "T"-shaped protrusion can more easily slide into the locking groove 50 when the locking part 40 is engaged with the locking groove 50. Preferably, the width of both the sliding groove and the locking groove 50 is gradually narrowing, and the narrowing direction of both is the same. That is, the seat will slide tighter as it slides towards the narrowing direction of the locking groove 50, until it can no longer slide. At this time, the seat is damped and stuck in the sliding groove, so that the "T"-shaped protrusion is not easily loosened and falls out of the locking groove 50 by external force. It should be noted that the same function can also be achieved by creating a sliding groove on the seat. That is, the seat is fixedly set on the side of the base 10, and the end face of the seat is provided with a sliding groove. A "T"-shaped protrusion is provided in the sliding groove, and the locking groove 50 and the locking part 40 are engaged by sliding the "T"-shaped protrusion. Of course, the shape of the protrusion can also be spherical, dovetail-shaped, inverted triangle, etc., as long as it can be locked in the locking groove 50. This embodiment is not limited to this, and all of the above are within the protection scope of this utility model.

[0045] See Figures 1 to 11 As shown, further, in one embodiment of this utility model, the base 10 is provided with a speaker assembly inside, and the inner side 10a of the base 10 is provided with a sound-permeable structure 60. It should be noted that, in this embodiment, the inner side 10a of the base 10 is set as a mesh sound-permeable structure 60, and the sound-permeable cloth is fixedly installed on the inner side 10a of the base 10 by means of spraying glue, connectors, etc.; alternatively, a support frame can be preset inside the base 10, and the sound-permeable cloth can be laid on the frame; preferably, a waterproof membrane, dustproof net, etc. can also be set to form a multi-layer composite structure with the sound-permeable cloth to improve the dustproof and waterproof performance of the base 10 and avoid damage to the internal speaker. Of course, in some other embodiments, the sound-permeable structure 60 can also be set as a micro-perforated plate or a micro-grid plate of the inner side 10a of the base 10; or the inner side 10a can be set as a metal plate with several sound-permeable holes opened on the metal plate. This embodiment is not limited to this, and all of the above are within the protection scope of this utility model. By placing the speaker assembly inside the base 10, the exposed speaker is avoided, which can easily lead to dust accumulation or damage. When in use, the speaker's sound direction is towards the user, forming the optimal listening area and improving the user experience. At the same time, placing the speaker inside can form a cabinet resonance cavity, resulting in better sound quality than an exposed speaker.

[0046] See Figures 1 to 11As shown, further, in one embodiment of this utility model, in the width direction of the base 10, the horizontal distance from the connection point between the free end 22 of the rotating arm 20 and the screen 30 to the center point of the base 10 is defined as L. When the screen 30 is in the second state, the width of the exposed sound-emitting area is 2L. It should be noted that, as Figure 4 As shown, the connection point between the free end 22 of the rotating arm 20 and the screen 30 is eccentrically positioned. This design ensures that when the screen 30 is in its second state, it will not obstruct the sound-emitting area, effectively exposing the speaker area. Preferably, the exposed sound-emitting area is equipped with a power switch and volume up / down buttons. This means that once the screen 30 is open, regardless of its orientation or rotation, the speaker area remains exposed, not affecting the sound propagation of the internal speaker. Users can effectively receive sound and conveniently control the speaker's power and volume.

[0047] See Figures 1 to 11 As shown, further, in one embodiment of this utility model, at least two rotating arms 20 are included, the two rotating arms 20 are spaced apart, and the screen 30 is rotatably disposed between the two rotating arms 20; the fulcrum ends 21 of the two rotating arms 20 are connected by a connecting rod to form a handle 70; or, a handle 70 is provided on one side of the base 10, and the handle 70 is located between the two rotating arms 20. It should be noted that this embodiment has two rotating arms 20, and both sides of the base 10 are provided with the aforementioned locking part 40 and / or sliding groove, and are symmetrically arranged. Figure 1 As shown, in this embodiment, the two rotating arms 20 are connected by a connecting rod, and the two rotating arms 20 and the connecting rod form a complete handle 70. This improves the portability of the display device 100, and the handle 70 allows the display device 100 to be hung on a wall, enriching the application scenarios of the display device 100. Figure 2 As shown, in another embodiment, a handle 70 is provided on one side of the base 10. The handle 70 is located between the two rotating arms 20. In this case, the handle 70 and the two rotating arms 20 are set independently. The beneficial effects of this method are the same as those described above, and will not be repeated here.

[0048] See Figures 1 to 11 As shown, further, in one embodiment of this utility model, a bracket 80 is hinged to the side of the base 10 opposite to the inner side 10a. It should be noted that the bracket 80 in this embodiment is a support plate, mounted on the back of the base 10 via a pivot, as shown... Figure 5As shown, when the display device 100 needs to stand upright, it is supported by opening the support plate on the back, and the support angle can be adjusted by rotating the support plate via a pivot. The bracket 80 can also be configured as a support rod, hinged to the base 10 via a universal joint or other structural form. This embodiment is not limited to this, and all of the above are within the protection scope of this utility model. Preferably, the back of the base 10 is provided with a groove that matches the support plate. With this configuration, when the bracket 80 is in the retracted state, the support plate can be completely embedded in the base 10, maintaining the integrity and aesthetic appearance of the display device 100.

[0049] See Figures 1 to 11 As shown, further, in one embodiment of this utility model, the surfaces of the base 10 and / or the screen 30 are coated with a waterproof coating. It should be noted that this embodiment forms a protective film by coating the surfaces of the base 10 and the screen 30 with a waterproof coating, preventing moisture from penetrating into the housing and protecting the internal electrical components from damage. The waterproof coating can be polyurethane coating, acrylic coating, etc. Furthermore, waterproofing can also be achieved by setting waterproof adhesive strips around the base 10 or the screen 30. When the screen 30 is closed, the waterproof adhesive strips are pressed against the connection between the base 10 and the screen 30 to seal the gap between them, preventing water from flowing into the interior and meeting the waterproofing requirements of the display device 100.

[0050] The above description is only an optional embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A novel display device, characterized in that, include: Base; A rotating arm, wherein the fulcrum end of the rotating arm is rotatably connected to the base; as well as The screen has a free end of the rotating arm that is rotatably connected to the side of the screen so that the screen has at least a first state and a second state, and can switch between at least two states; when the screen is in the first state, the display surface of the screen is in contact with the inner side of the base; when the screen is in the second state, the back side of the screen is in contact with the inner side of the base.

2. The display device as described in claim 1, characterized in that, The fulcrum end of the rotating arm is connected to the base via a first damping shaft, which is used to resist the rotation of the rotating arm relative to the base; the free end of the rotating arm is connected to the screen via a second damping shaft, which is used to resist the rotation of the screen relative to the screen.

3. The display device as described in claim 1, characterized in that, The rotating arm rotates within a range of 0° to 320° around its fulcrum, and the screen rotates within a range of 0° to 330° around the free end of the rotating arm.

4. The display device as claimed in claim 1, characterized in that, The base has a locking part on its side, and the free end of the rotating arm has a locking groove that cooperates with the locking part. When the screen is in the first state or the second state, the locking part is engaged in the locking groove.

5. The display device as described in claim 4, characterized in that, The base has a sliding groove on its side, and the sliding groove extends in the same direction as the locking groove. The locking part is movably disposed in the sliding groove so that the locking part can be movably engaged in the locking groove.

6. The display device as claimed in claim 1, characterized in that, The base has a speaker assembly inside, and the inner side of the base has a sound-transmitting structure.

7. The display device as claimed in claim 6, characterized in that, In the width direction of the base, the horizontal distance from the connection point between the free end of the rotating arm and the screen to the center point of the base is defined as L. When the screen is in the second state, the width of the exposed sound-emitting area is 2L.

8. The display device according to any one of claims 1 to 7, characterized in that, It includes at least two rotating arms, the two rotating arms are spaced apart, and the screen is rotatably disposed between the two rotating arms; The two rotating arms are connected at their fulcrum ends by a connecting rod to form a handle; Alternatively, a handle may be provided on one side of the base, and the handle may be located between the two rotating arms.

9. The display device according to any one of claims 1 to 7, characterized in that, A bracket is hinged to the side of the base away from the inner side.

10. The display device according to any one of claims 1 to 7, characterized in that, The base and / or the screen are coated with a waterproof coating.

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