Display devices

Abstract

A display device is provided, which includes: a shell having an opening; a reel arranged in the shell; a display, which is wound on the reel and is rolled out or rolled in through the opening; a frame arranged at the upper end or lower end of the display; a first connecting rod, one end of which is connected to one end of the frame in a rotatable manner; a second connecting rod, one end of which is connected to the other end of the frame in a rotatable manner; a first slider and a second slider, which are respectively connected to the other end of the first connecting rod and the other end of the second connecting rod in a rotatable manner; and a first guide rail and a second guide rail, which are horizontally arranged in the shell and provide movement paths for the first slider and the second slider, respectively, wherein the first guide rail and the second guide rail at least partially overlap each other in the front-to-back direction.

Description

Technical Field

[0001] The present disclosure relates to a display device, and more particularly, to a display device having an improved link structure to minimize the size of a housing in which a rollable display is accommodated. Background Art

[0002] In recent display devices, the rollable display is pulled out through an opening in the housing only when the user is using the display device. Therefore, when the display device is not in use, the black screen is not exposed to the outside, achieving a design effect and minimizing the size of the display device. This allows the user to install the display device in any of a variety of locations and easily move it to a desired location.

[0003] However, the link structure for pulling out and supporting a large rollable display requires high rigidity and size, and the link drive device needs to have a large capacity. Therefore, there is a growing demand to minimize the size of the link structure and the gaps between the link structures while making it possible to optimize the capacity of the drive device. Summary of the Invention

[0004] Technical problems to be solved

[0005] The embodiments of the present disclosure overcome the above disadvantages and other disadvantages not described above. In addition, the present disclosure is not required to overcome all the disadvantages described above, and the embodiments of the present disclosure may not overcome any of the problems described above.

[0006] Provided is a display device having an improved link structure to minimize the size of a housing in which a rollable display is accommodated.

[0007] Technical Solution

[0008] According to one aspect of the present disclosure, a display device is provided, which includes: a shell having an opening; a reel arranged inside the shell; a display configured to be wound around the reel and pulled out or pulled in through the opening; a frame arranged on the upper end or lower end of the display; a first connecting rod having a first end connected to the first end of the frame in a rotatable manner; a second connecting rod having a first end connected to the second end of the frame in a rotatable manner; a first slider and a second slider, the first slider and the second slider being respectively connected to the second end of the first connecting rod and the second end of the second connecting rod in a rotatable manner; and a first guide rail and a second guide rail, the first guide rail and the second guide rail being horizontally arranged inside the shell and providing movement paths for the first slider and the second slider, respectively, wherein the first guide rail and the second guide rail at least partially overlap each other in the front-to-back direction.

[0009] The display device may further include a driving device configured to move the first slider and the second slider in opposite directions.

[0010] The driving device may include: a first lead screw, which is arranged parallel to the first guide rail; a second lead screw, which is arranged parallel to the second guide rail; and a motor, which is configured to rotate the first lead screw and the second lead screw, wherein the first slider and the second slider respectively include ball nuts that move as the first lead screw and the second lead screw rotate.

[0011] The driving device may further include a first gear and a second gear, the first gear and the second gear being respectively arranged on the first end of the first lead screw and the first end of the second lead screw, the first gear and the second gear being engaged with each other at a transmission ratio of 1:1, and the motor may be configured to rotate the first gear or the second gear.

[0012] The motor may include a third gear connected to the first gear or the second gear.

[0013] The display device may further include: a first pressure member, which is arranged in parallel with the first guide rail and is configured to pull or push the first slider; and a second pressure member, which is arranged in parallel with the second guide rail and is configured to pull or push the second slider.

[0014] Based on the display being completely pulled into the housing through the opening, the first link and the second link may be tilted at an angle of 3 to 10 degrees relative to a horizontal plane.

[0015] When the display is completely pulled out of the housing through the opening, the first link and the second link may be tilted at an angle of 55 to 85 degrees relative to a horizontal plane.

[0016] The thickness of the first link and the thickness of the second link may gradually decrease from the first end to the second end of the link.

[0017] The display device may further include at least one first sensor configured to detect a movement amount of the first slider and a movement amount of the second slider.

[0018] The display device may further include: a first supporting member and a second supporting member, the first supporting member and the second supporting member being respectively arranged on the left and right sides of the first guide rail and the second guide rail inside the shell; a third connecting rod having a first end rotatably connected to the first supporting member and a second end rotatably connected to a point of the first connecting rod; and a fourth connecting rod having a first end rotatably connected to the second supporting member and a second end rotatably connected to a point of the second connecting rod.

[0019] The thickness of the third link and the thickness of the fourth link may gradually decrease from the first end to the second end of the link.

[0020] The first supporting member may include a pair of first plates supporting the front and rear surfaces of the third link, respectively, and the second supporting member may include a pair of second plates supporting the front and rear surfaces of the fourth link, respectively.

[0021] The third link and the fourth link may respectively have a first protrusion and a second protrusion arranged on the rear surface of the link, and the first plate and the second plate may respectively have a first groove and a second groove corresponding in shape to the rotation radius of the first protrusion and the second protrusion, and the first groove and the second groove may respectively support the first protrusion and the second protrusion.

[0022] The display apparatus may further include at least one second sensor configured to detect a rotation amount of the third link and a rotation amount of the fourth link. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and other aspects, features and advantages of certain embodiments of the present disclosure will become more apparent from the following description taken in conjunction with the accompanying drawings, in which:

[0024] Figure 1is a perspective view of a display device according to an embodiment of the present disclosure;

[0025] Figure 2 The image shows the monitor being pulled out. Figure 1 A perspective view of the state of the housing;

[0026] Figure 3 Is set in Figure 1 A perspective view of the reel inside the housing;

[0027] Figure 4 yes Figure 3 An enlarged front view of part A;

[0028] Figure 5 is a rear perspective view of a state in which the display according to the embodiment is pulled into the housing;

[0029] Figure 6 is a rear perspective view of a state in which the display according to the embodiment is pulled out of the housing;

[0030] Figure 7 yes Figure 5 an enlarged view of the drive mechanism; and Figure 8 yes Figure 6 An enlarged view of the drive mechanism;

[0031] Figure 9 yes Figure 5 An enlarged view of the gears and lead screw of the motor;

[0032] Figure 10 yes Figure 5 an exploded perspective view of a first support member; and Figure 11 yes Figure 6 Exploded perspective view of the first support member. DETAILED DESCRIPTION

[0033] The embodiments described below are described by way of example to aid understanding of the present disclosure, and it is understood that various modifications of the present disclosure may be implemented differently from the embodiments described herein. However, when describing the present disclosure, if it is determined that a detailed description of a related known function or element may obscure the key points of the present disclosure, the detailed description and specific illustration of the related known function or element will be omitted. In addition, to aid understanding of the present disclosure, the drawings are not necessarily illustrated to scale, and the sizes of some elements may be exaggerated.

[0034] The terms used in the specification and claims are general terms selected in consideration of the functions of the present disclosure. However, these terms may vary depending on the intentions of those skilled in the art, legal or technical interpretations, the emergence of new technologies, etc. In addition, there may be some terms that the applicant arbitrarily selects. These terms may be interpreted as having the meanings defined in the specification, and unless expressly defined otherwise, these terms may be interpreted based on the entire content of the specification and the common technical knowledge in the art.

[0035] In the specification, expressions “having”, “may have”, “including”, “may include”, etc. indicate the existence of corresponding features (for example, elements such as values, functions, operations or components), and do not exclude the existence of additional features.

[0036] In the specification, the elements necessary for describing each embodiment of the present disclosure are described, and these elements are not necessarily limited thereto. Therefore, some of these elements may be modified or omitted, and other elements may be added. In addition, these elements may also be dispersedly arranged in devices independent of each other.

[0037] Furthermore, although the embodiments of the present disclosure will be described in detail with reference to the accompanying drawings and the contents illustrated in the drawings, the present disclosure is not limited to these embodiments.

[0038] Hereinafter, the present disclosure will be described in more detail with reference to the accompanying drawings.

[0039] Figure 1 is a perspective view of a display device according to an embodiment of the present disclosure. Figure 2 The image shows the monitor being pulled out. Figure 1 A perspective view of the state of the housing.

[0040] refer to Figure 1 and Figure 2 The display device 1 according to an embodiment of the present disclosure includes a housing 10, a display 100, and a scroll 200 ( Figure 3 ) and may have a structure in which the display 100 is wound around the reel 200 for storage inside the housing 10 at normal times, and is pulled out of the housing 10 as needed to provide various types of images to the user.

[0041] The display device 1 according to various embodiments of the present disclosure may be an electronic device including an image display function, a piece of furniture, or a part of a building / structure. For example, the display device 1 may include a television, a digital video disc (DVD) player, a smartphone, a desktop personal computer (PC), a tablet PC, a laptop PC, a personal digital assistant (PDA), a portable multimedia player (PMP), a mobile medical device, a camera, a wearable device, a TV box (e.g., Samsung HomeSync ... personal digital assistant (PDA), a portable multimedia player (PMP), a mobile medical device, a camera, a wearable device, a TV box (e.g., Samsung HomeSync), a tablet PC, a laptop PC, a personal digital assistant (PDA), a personal digital assistant (PDA), a personal digital assistant (PDA), a portable multimedia player (PMP), a mobile medical device, a camera, a wearable device, a TV box (e.g., Samsung HomeSync), a tablet PC, a laptop PC, a personal digital assistant (PDA), a personal digital assistant (PDA), a personal digital assistant (PDA), a personal digital assistant (PDA), a personal digital assistant (PDA), a personal digital assistant (PDA), a personal digital assistant (PDA), a personal digitalTM , Apple TV TM or Google TV TM ), a game console, an electronic board, an electronic signature receiving device, a projector, or at least one of any type of measuring device (e.g., a water meter, an electricity meter, a gas meter, or a radio wave meter).

[0042] Furthermore, the display apparatus 1 according to the embodiment of the present disclosure can be applied not only to a screen device that emits light by itself but also to a reflective screen device that reflects light incident from a projector.

[0043] The housing 10 forms the appearance of the display device 1 and can be made of metal or plastic material. In addition, the housing 10 can have a substantially rectangular parallelepiped shape, but is not limited thereto. The material, size and shape of the housing 10 can be formed in various ways.

[0044] The housing 10 may include an opening 11 in one surface of the housing for accommodating the display 100 in the housing and unfolding the display 100 outside the housing 10. That is, the display 100 may be pulled out or in through the opening 11 of the housing 10 as needed.

[0045] The opening 11 may be located in the upper surface of the housing 10 , but the location of the opening 11 is not limited thereto. The opening 11 may be located in at least one of the front surface, rear surface, side surface, and lower surface of the housing 10 .

[0046] The display 100 can display various types of content (e.g., text, images, videos, icons, and symbols) to the user. The display 100 can include, for example, a liquid crystal display (LCD), a light emitting diode (LED) display, an organic light emitting diode (OLED) display, a microelectromechanical system (MEMS) display, an electronic paper display, or a flexible display having a foldable or bendable display unit.

[0047] The upper end or the lower end of the display 100 may be supported by the frame 110. The frame 110 may have a length corresponding to the width of the display 100. The frame 110 may protect the upper end of the display 100 from external impact.

[0048] exist Figure 2 , the frame 110 is illustrated as being provided only at the upper end of the display 100 , but the embodiment is not limited thereto. For example, the frame 110 may be provided at the lower end of the display 100 .

[0049] In a case where the frame 110 supports the lower end of the display 100 , when a link structure to be described later pushes the frame 110 downward, the display 100 can be pulled out of the housing 10 while moving downward.

[0050] The rear surface of the frame 110 may be lifted, lowered, and supported by a link structure to be described later.

[0051] The user can grasp the frame 110 and pull it out of the housing 10 or push the frame 110 into the housing 10, and accordingly, can pull out or pull in the display 100 through the opening 11 of the housing 10. For example, the frame 110 can be used as a handle grasped by the user when pulling out or pulling in the display 100.

[0052] Figure 3 Is set in Figure 1 A perspective view of the reel inside the casing. Figure 4 yes Figure 3 Magnified front view of part A.

[0053] refer to Figure 3 and Figure 4 , the display apparatus 1 according to an embodiment of the present disclosure may include a reel 200 , a pair of side walls 210 a and 210 b , a reel driving motor 220 , a plurality of rods 230 , and a reel gear 240 .

[0054] The reel 200 may have a substantially cylindrical or cylindrical shape and may have a length corresponding to the length (width) in the horizontal direction of the display 100. One area of ​​the display 100 may be rolled around an outer surface of the reel 200.

[0055] Opposite ends of the rotation axis of the reel 200 may be rotatably supported by a pair of side walls 210 a and 210 b fixed to the base 12 of the housing 10 , respectively.

[0056] When the rotation axis of the reel 200 rotates in one direction, the display 100 can be rolled around the reel 200 and pulled into the housing 10, and when the rotation axis of the reel 200 rotates in the opposite direction, the display 100 rolled around the reel 200 can be unrolled and pulled out of the housing 10.

[0057] The reel drive motor 220 can rotate the reel 200 to pull the display 100 into the housing 10 or pull the display 100 out of the housing 10. For example, the reel drive motor 220 can be implemented as a DC motor, a brushless motor, a stepper motor, or a servo motor to rotate the rotation axis of the reel 200 on which the display 100 is wound.

[0058] The plurality of rods 230 may be disposed horizontally between the first link 310 and the second link 320 ( Figure 5 ) and the reel 200. Opposite ends of the plurality of rods 230 may be supported by a pair of side walls 210a and 210b, respectively.

[0059] Therefore, interference between the link structure of the frame 110 supporting the display 100 and the rotating scroll 200 can be minimized. In addition, the plurality of rods 230 can serve as a partition wall separating the space between the link structure and the scroll 200 and can have maximum rigidity with a thin thickness.

[0060] For example, the plurality of rods 230 define a space in which the display 100 moves, and thus the display 100 protected by the plurality of rods 230 may move more stably with minimal interference with various components inside the housing 10 .

[0061] The reel gear 240 may be mounted on the rotation axis of the reel 200. In addition, the damping gear 221 of the reel driving motor 220 may be provided to be engaged with the reel gear 240.

[0062] When the reel driving motor 220 is driven and the damping gear 221 rotates in one direction, the reel gear 240 engaged with the damping gear 221 may rotate in an opposite direction to the damping gear 221 , and thus the rotation axis of the reel 200 may rotate.

[0063] The damping gear 221 can be constantly engaged with the scroll gear 240, thereby preventing the scroll gear 240 from rotating unintentionally. In addition, the display 100 can be continuously kept taut along the direction in which the display 100 is wound around the scroll 200 by means of the damping gear 221. Therefore, the display 100 can be prevented from wrinkling when being pulled out.

[0064] Figure 5 is a rear perspective view of a state in which the display is pulled into the housing according to the embodiment. Figure 6 is a rear perspective view of a state in which the display is pulled out of the housing according to the embodiment.

[0065] refer to Figure 5 and Figure 6 , the display apparatus 1 according to an embodiment of the present disclosure may include a first link 310 , a second link 320 , a first slider 410 , a second slider 420 , a first guide rail 510 , and a second guide rail 520 .

[0066] One end 311 of the first link 310 may be rotatably connected to one end 110a of the frame 110, and one end 321 of the second link 320 may be rotatably connected to the other end 110b of the frame 110. The one end 110a and the other end 110b of the frame 110 may be located in the left and right regions of the frame 110, respectively.

[0067] The lengths of the first link 310 and the second link 320 may be proportional to the size of the display 100. For example, as the display 100 having a larger size is pulled out, the frame 110 of the display 100 is further separated from the housing 10, and thus, the first link 310 and the second link 320 supporting the frame 110 may have a longer length.

[0068] Respective lengths of the first link 310 and the second link 320 may be longer than a vertical length of the display 100 and shorter than a horizontal length of the display 100 .

[0069] When the display 100 is fully pulled out of the housing 10, the first link 310 and the second link 320 can be tilted at an angle, rather than being arranged vertically, to support the display. Furthermore, when the display 100 is fully pulled into the housing 10, the first link 310 and the second link 320 can be tilted at an angle, rather than being arranged horizontally. Thus, an excessive increase in the initial driving force for changing the first link 310 and the second link 320 from the flat position to the standing position can be prevented.

[0070] The first slider 410 may be rotatably connected to the other end 312 of the first link 310, and the second slider 420 may be rotatably connected to the other end 322 of the second link 320. The first slider 410 and the second slider 420 may move along the first guide rail 510 and the second guide rail 520, respectively.

[0071] The first link 310 can rotate around the other end 312 and can be moved horizontally by the first slider 410. Similarly, the second link 320 can rotate around the other end 322 and can be moved horizontally by the second slider 420.

[0072] The first link 310 may have a rotation axis formed at a point connected to the first slider 410 , and the second link 320 may have a rotation axis formed at a point connected to the second slider 420 .

[0073] For example, the first link 310 and the second link 320 may rotate about respective rotation axes moving in a horizontal direction, and the display 100 connected to respective one ends 311 and 321 of the first link 310 and the second link 320 may be lifted or lowered.

[0074] The first guide rail 510 may be horizontally disposed inside the housing 10 to provide a movement path for the first slider 410, and the second guide rail 520 may be horizontally disposed inside the housing 10 to provide a movement path for the second slider 420. The lower surface of the first slider 410 and the lower surface of the second slider 420 may be fitted on the first guide rail 510 and the second guide rail 520, respectively.

[0075] The first guide rail 510 and the second guide rail 520 may overlap each other in at least one section in the front-rear direction. For example, the first guide rail 510 may be disposed behind the second guide rail 520, but is not limited thereto. The second guide rail 520 may be disposed behind the first guide rail 510.

[0076] The first guide rail 510 and the second guide rail 520 may be arranged to appear to overlap each other in at least one section when viewed from the front or rear of the display device 1. For example, the first guide rail 510 and the second guide rail 520 may provide respective horizontal movement paths of the first slider 410 and the second slider 420 that overlap each other in the front-to-back direction.

[0077] The first guide rail 510 and the second guide rail 520 may have the same length and both may be arranged in the horizontal direction (direction parallel to the X-axis) of the housing 10. In addition, the first guide rail 510 and the second guide rail 520 may overlap each other in all sections in the front-rear direction.

[0078] The first guide rail 510 and the second guide rail 520 can be fixedly mounted on the base 12 of the housing 10 so as to be aligned parallel to the X-axis. Thus, the first slider 410 and the second slider 420 can move along a straight path parallel to the X-axis. For example, the first slider 410 and the second slider 420 can have one degree of translational freedom parallel to the X-axis.

[0079] When the display 100 is completely pulled into the housing 10, the first slider 410 may be located at the right end of the first guide rail 510, and the second slider 420 may be located at the left end of the second guide rail 520. Therefore, the first link 310 and the second link 320 may be arranged to intersect each other in a substantially "X" shape.

[0080] The first link 310 and the second link 320 may be formed to have thicknesses that gradually decrease from one end 311 and 321 to the other end 312 and 322, respectively. For example, the first link 310 and the second link 320 may have asymmetric shapes with varying thicknesses along the length direction. Thus, the first link 310 and the second link 320 overlapping each other in the front-to-back direction can minimize mutual interference during the rotation operation.

[0081] In addition, when the display 100 is pulled out of the housing 10 , the first and second links 310 and 320 may have thinner thicknesses in regions adjacent to the other ends 312 and 322 exposed to the outside, thereby achieving a compact appearance of the display apparatus 1 .

[0082] Since the first guide rail 510 and the second guide rail 520 overlap each other, when the display 100 is fully pulled into the housing 10 through the opening 11, the first link 310 and the second link 320 can be set to be inclined at an angle of 3 to 10 degrees relative to the horizontal plane (XY plane).

[0083] In addition, since the first link 310 and the second link 320 are arranged in the tilted state as described above, the housing 10 can more easily accommodate the first link 310 and the second link 320 having a relatively long length. For example, the housing 10 can accommodate the long first link 310 and the second link 320 corresponding to the large display 100 with the minimum size.

[0084] In addition, the first link 310 and the second link 320 are tilted at a predetermined angle, rather than being set horizontally, as the initial posture of the first link 310 and the second link 320 when starting to operate the first link 310 and the second link 320, and therefore, the initial driving force used to move one end 311 and 321 of the first link 310 and the second link 320 in the vertical direction can be minimized.

[0085] In addition, when the display 100 is fully extended through the opening 11, the first link 310 and the second link 320 can be tilted at an angle of 55 to 85 degrees relative to the horizontal plane (XY plane). For example, the first link 310 and the second link 320 can more stably support the fully extended display 100 in a non-vertical setting state.

[0086] When the display 100 is lifted, the first slider 410 and the second slider 420 can move in the horizontal direction to get closer to each other, intersect each other, and then separate from each other again. Therefore, the first link 310 and the second link 320 can rotate around the first slider 410 and the second slider 420, respectively, to more easily support the frame 110 of the display 100 in the lifted state.

[0087] Since the first guide rail 510 and the second guide rail 520 overlap each other in at least one section in the front-rear direction, the first guide rail 510 and the second guide rail 520 may be formed to have a length that is 0.4 times or more the horizontal length of the housing 10. The first slider 410 and the second slider 420 may be respectively moved along the long path of the first guide rail 510 and the long path of the second guide rail 520 having a sufficiently long length.

[0088] As the larger display 100 is pulled out, the frame 110 can be further separated from the housing 10. As the first slider 410 and the second slider 420 move along the first guide rail 510 and the second guide rail 520 having a sufficiently long length, the first link 310 and the second link 320 can be fully rotated at a predetermined angle or more, thereby more easily supporting the frame 110 located at a relatively high height in the Z-axis direction.

[0089] Furthermore, since the first guide rail 510 and the second guide rail 520 have overlapping sections, the first link 310 and the second link 320 may rotate at an angle within a range less than 90 degrees to more stably support the frame 110 of the display 100 .

[0090] Each of the general link structures supporting the display 100 is implemented by connecting a plurality of segmented links to each other through a hinge. As a result, gaps may occur between the plurality of links. However, according to an embodiment of the present disclosure, each of the first link 310 and the second link 320 is implemented as a single link structure having a long length, rather than a structure in which a plurality of segmented links are connected to each other, so as to support the display 100 more firmly and stably without gaps while minimizing the hinge structure.

[0091] In addition, since the display device 1 uses the first link 310 and the second link 320, the power loss that may occur during the power transmission process in the multi-stage link structure can be minimized, thereby minimizing the capacity of the motor (automatic mode) used to move the display 100 or the user's force (manual mode).

[0092] In addition, since the first link 310 and the second link 320 have thicknesses that gradually decrease from one end to the other end thereof, even if the first link 310 and the second link 320 intersect with each other in partial sections during operation, mutual interference between the first link 310 and the second link 320 can be minimized, and an overall compact and slim appearance of the display device 1 can be achieved.

[0093] Figure 7 and Figure 8 They are Figure 5 and Figure 6 An enlarged view of the drive unit. Figure 9 yes Figure 5 A magnified view of the motor's gears and leadscrew.

[0094] refer to Figures 7 to 9 The display device 1 according to the embodiment of the present disclosure may further include a driving device that moves the first slider 410 and the second slider 420 in opposite directions.

[0095] The following will describe that the display 100 is automatically moved by the driving device, but is not limited thereto. As described above, the user can grasp the frame 110 of the display 100 and manually move the display 100 himself.

[0096] The driving device may include a first lead screw 720 provided in parallel with the first guide rail 510, a second lead screw 730 provided in parallel with the second guide rail 520, and a motor 710 for rotating the first lead screw 720 and the second lead screw 730. In addition, the first slider 410 and the second slider 420 may include ball nuts that move as the first lead screw 720 and the second lead screw 730 rotate, respectively.

[0097] However, the driving device may be implemented not only by a ball nut structure that moves linearly according to the rotational movement of the screw, but also by various types of linear actuators that are configured to move the first slider 410 and the second slider 420 horizontally and linearly in opposite directions.

[0098] Additionally, when the user manually moves the display, the driving device does not need to include the motor 710, and a rotation damper or stopper capable of achieving a free stop may be used instead of the motor 710.

[0099] For example, the opposite ends of the first lead screw 720 and the second lead screw 730 can be respectively supported by two side walls 701a and 701b fixedly arranged on the base 12 of the shell 10 in a rotatable manner, and the first lead screw 720 and the second lead screw 730 can respectively pass through the first slider 410 and the second slider 420.

[0100] In addition, when the first and second lead screws 720 and 730 are rotated by the motor 710 , the first and second sliders 410 and 420 including the ball nuts contacting the first and second lead screws 720 and 730 may move linearly along the first and second guide rails 510 and 520 , respectively.

[0101] In addition, the driving device may include a first gear 722 and a second gear 732, which are respectively assembled on one end of the first screw 720 and the second screw 730 and mesh with each other with a transmission ratio of 1:1, and the motor 710 can cause the first gear 722 or the second gear 732 to rotate.

[0102] One motor 710 may rotate the first gear 722 or the second gear 732 at a predetermined angular velocity, and the other gear meshed with a gear ratio of 1:1 may passively rotate at the same angular velocity.

[0103] Thus, the first slider 410 and the second slider 420 can be synchronized with each other so as to move linearly at the same rate, and the first link 310 and the second link 320 can move rotationally at the same angular velocity. Therefore, the first link 310 and the second link 320 can support the display 100 while moving in opposite directions at the same rate, thereby moving the display 100 only in the vertical direction. As a result, the display 100 can be stably raised or lowered along a predetermined path while maintaining its horizontal state without tilting or twisting in a particular direction.

[0104] Furthermore, in a manual mode in which a motor 710 is not separately provided to rotate the first and second lead screws 720 and 730, the first and second gears 722 and 732 may be respectively mounted on one end of the first and second lead screws 720 and 730 in a state where they are meshed with each other at a gear ratio of 1:1. Therefore, even when a user grasps a certain area of ​​the display 100, for example, the left side, right side, or center, and moves the display 100, the display 100 can be stably raised or lowered along a predetermined path while maintaining a horizontal state without tilting or twisting in a specific direction.

[0105] In addition, the motor 710 may include a third gear 711 that meshes with the first gear 722 or the second gear 732. For example, the motor 710 may directly rotate the first gear 722 or the second gear 732 as described above, but may also rotate the third gear 711 so as to rotate the first gear 722 and the second gear 732 that are sequentially meshed with the third gear 711.

[0106] In addition, the third gear 711 can act as a damper to limit unintended rotation of the first gear 722 and the second gear 732. For example, when the display 100 is fully extended to a certain height, the third gear 711 can prevent the first gear 722 or the second gear 732 from rotating further by using the friction between the meshing gears.

[0107] In addition, while ensuring a sufficient transmission ratio based on a combination of the threads of the first screw 720 and the second screw 730, the third gear 711 of the motor 710, and the reduction gear device of the motor 710 itself, the drive device can perform a free stop without a separate clutch device even if the power from the motor 710 is cut off, thereby minimizing the capacity of the motor 710.

[0108] The display device 1 may further include at least one first sensor that detects movement amounts of the first and second sliders 410 and 420. The first sensor may detect linear movement amounts of the first and second sliders 410 and 420, or rotation amounts of the first and second lead screws.

[0109] When the display 100 is lifted, the motor 710 may need an output that adds the weight of the display 100. When the display 100 is lowered, the motor 710 may need an output that subtracts the weight of the display 100. Therefore, if the output of the motor 710 is unbalanced between lifting and lowering the display 100, a large-capacity motor may be required, and excessive force may be required when the user manually lifts the display.

[0110] At this point, the display device 1 may further include a first pressure member 721 and a second pressure member 731 disposed parallel to the first guide rail 510 to pull or push the first slider 410 , and disposed parallel to the second guide rail 520 to pull or push the second slider 420 .

[0111] The first pressure member 721 and the second pressure member 731 may be disposed around the first lead screw 720 and the second lead screw 730, respectively. For example, the first pressure member 721 may be a tension spring connecting the first slider 410 to the second side wall 701b. Furthermore, the second pressure member 731 may be a tension spring connecting the second slider 420 to the first side wall 701a.

[0112] The first pressure member 721 and the second pressure member 731 are implemented not only as tension springs but also as gas springs, rubber band devices, or compression springs.

[0113] When the display 100 is pulled out, the first slider 410 may move from the first sidewall 701 a toward the second sidewall 701 b , and the second slider 420 may move from the second sidewall 701 b toward the first sidewall 701 a .

[0114] When the display 100 is lifted, the first pressure member 721 may pull the first slider 410 toward the second sidewall 701b. In addition, the second pressure member 731 may pull the second slider 420 toward the first sidewall 701a while being compressed.

[0115] For example, when the display 100 is lifted, the first pressure member 721 and the second pressure member 731 may be compressed to respectively assist the movement of the first slider 410 and the second slider 420. In addition, when the display 100 is lowered, the first pressure member 721 and the second pressure member 731 may be tensioned to respectively interrupt the movement of the first slider 410 and the second slider 420.

[0116] Therefore, when the display 100 is lifted, the output of the motor 710 may be reduced, and when the display 100 is lowered, the output of the motor 710 may be increased, thereby balancing the output between the lifting operation and the lowering operation.

[0117] As a result, the display device 1 can be driven even by a small-capacity motor 710 , and the display can be manually lifted by the user even with a small force.

[0118] In the case where the first pressure member 721 and the second pressure member 731 are implemented as compression springs, the first pressure member 721 may connect the first slider 410 to the first sidewall 701 a , and the second pressure member 731 may connect the second slider 420 to the second sidewall 701 b .

[0119] Therefore, when the display 100 is lifted, the first pressure member 721 and the second pressure member 731 may be tensioned to respectively assist the movement of the first slider 410 and the second slider 420, and when the display 100 is lowered, the first pressure member 721 and the second pressure member 731 may be compressed to respectively interrupt the movement of the first slider 410 and the second slider 420. That is, even when the first pressure member 721 and the second pressure member 731 are implemented as compression springs, the same effect as when they are implemented as tension springs can be induced.

[0120] Although it has been described so far that the driving device is implemented as a ball screw device, the type of the driving device is not limited thereto. The structure of the driving device can be implemented in various ways as long as the driving device is a linear actuator capable of linearly moving the first slider 410 and the second slider 420.

[0121] The display apparatus 1 may further include a first supporting member 810 , a second supporting member 820 , a third link 610 , and a fourth link 620 .

[0122] The first support member 810 and the second support member 820 may be fixedly disposed on the left and right sides of the first guide rail 510 and the second guide rail 520, respectively, inside the housing 10. Figure 10 and Figure 11 The structures of the first supporting member 810 and the second supporting member 820 are described in detail.

[0123] One end 611 of the third link 610 may be rotatably connected to the first supporting member 810, and the other end 612 of the third link 610 may be rotatably connected to a point of the first link 310. One end 621 of the fourth link 620 may be rotatably connected to the second supporting member 820, and the other end 622 of the fourth link 620 may be rotatably connected to a point of the second link 320.

[0124] The third link 610 and the fourth link 620 may be connected to respective center points of the first link 310 and the second link 320, but the connection positions are not limited thereto. The third link 610 and the fourth link 620 may have a shorter length than the first link 310 and the second link 320.

[0125] The third link 610 and the fourth link 620 may respectively rotate about the first support member 810 and the second support member 820 fixedly provided on the base 12 of the housing 10. The third link 610 and the fourth link 620 may respectively rotate about the axes Y1 and Y2 and may have one degree of rotational freedom.

[0126] As the first link 310 and the second link 320 rotate, the third link 610 and the fourth link 620 may passively rotate in directions opposite to the first link 310 and the second link 320 , respectively, so as to continue supporting the points of the first link 310 and the second link 320 , respectively.

[0127] Therefore, the first link 310 and the second link 320 can also rotate more stably in the forward or backward direction on the vertical plane (XZ plane) without play or vibration while having one degree of rotational freedom.

[0128] In addition, the third and fourth links 610 and 620 may have thicknesses gradually decreasing from one ends 611 and 621 thereof to the other ends 612 and 622. Therefore, the third and fourth links 610 and 620 may minimize interference with the first and second links 310 and 320 in a rotational state.

[0129] The display device 1 may further include at least one second sensor that detects the rotation amount of the third link 610 and the fourth link 620. Therefore, it is possible to detect whether a gap occurs in the third link 610 and the fourth link 620, or whether an external force is applied to the third link 610 and the fourth link 620.

[0130] Figure 10 and Figure 11 They are Figure 5 and Figure 6 Exploded perspective view of the first support member.

[0131] refer to Figure 10 and Figure 11 The first support member 810 may include a pair of first plates 811 and 812 that respectively support the rear and front surfaces of the third link 610. Similar to the first support member 810, the second support member 820 may also include a pair of second plates that respectively support the rear and front surfaces of the fourth link 620.

[0132] Therefore, the third link 610 and the fourth link 620 may rotate more stably in the forward or backward direction on the vertical plane (XZ plane) without a gap.

[0133] A space for the one end 611 of the third link 610 to rotate may be formed between the pair of first plates 811 and 812. Similarly, a space for the one end 621 of the fourth link 620 to rotate may be formed between the pair of second plates.

[0134] In addition, the third link 610 may have a first protrusion 613 on the rear surface of the third link, the first protrusion 613 has an "L" shape, the first plate 811 may have a first groove 811a having a shape corresponding to the rotation radius of the first protrusion 613, and the first groove 811a may support the front of the first protrusion 613.

[0135] Similarly, the fourth link 620 may have a second protrusion on the rear surface of the fourth link, the second protrusion having an "L" shape, the second plate may have a second groove having a shape corresponding to the rotation radius of the second protrusion, and the second groove may support the front of the second protrusion.

[0136] Since the first groove 811a guides the rotation of the first protrusion 613, the third link 610 can rotate more stably along the predetermined path without clearance. Similarly, since the second groove guides the rotation of the second protrusion, the fourth link 620 can rotate more stably along the predetermined path without clearance.

[0137] Although the embodiments of the present disclosure have been illustrated and described above, the embodiments are not limited to the embodiments described above, and those skilled in the art may make various modifications without departing from the gist of the present disclosure as claimed in the appended claims. Such modifications fall within the scope of the claims.

Claims

1. A display device, comprising: a housing having an opening; a reel disposed inside the housing; a display configured to be wound around the reel and pulled out or in through the opening; a frame, the frame being provided on an upper end or a lower end of the display; a first link having a first end rotatably connected to a first end of the frame; a second link having a first end rotatably connected to a second end of the frame; a first slider and a second slider, the first slider and the second slider being rotatably connected to the second end of the first link and the second end of the second link, respectively; and a first guide rail and a second guide rail, wherein the first guide rail and the second guide rail are horizontally arranged inside the housing and provide movement paths for the first slider and the second slider, respectively; The first guide rail and the second guide rail at least partially overlap each other in the front-to-rear direction, so that the movement paths of the first slider and the second slider provided by the first guide rail and the second guide rail overlap each other in the front-to-rear direction. 2 . The display device according to claim 1 , further comprising a driving device configured to move the first slider and the second slider in opposite directions.

3. The display device according to claim 2, wherein The driving device comprises: a first lead screw disposed parallel to the first guide rail; a second lead screw disposed parallel to the second guide rail; and a motor configured to rotate the first lead screw and the second lead screw, The first slider and the second slider respectively include ball nuts that move as the first lead screw and the second lead screw rotate.

4. The display device according to claim 3, wherein The driving device further includes a first gear and a second gear, the first gear and the second gear being respectively disposed on the first end of the first lead screw and the first end of the second lead screw, the first gear and the second gear being meshed with each other at a transmission ratio of 1:1, and The motor is configured to rotate the first gear or the second gear.

5. The display device according to claim 4, wherein The motor includes a third gear connected to the first gear or the second gear.

6. The display device according to claim 2, further comprising: a first pressure member disposed parallel to the first guide rail and configured to pull or push the first slider; and A second pressure member is disposed in parallel with the second guide rail and is configured to pull or push the second slider.

7. The display device according to claim 1, wherein When the display is fully drawn into the housing through the opening, the first link and the second link are inclined at an angle of 3 to 10 degrees relative to a horizontal plane.

8. The display device according to claim 1, wherein When the display is completely pulled out of the housing through the opening, the first link and the second link are inclined at an angle of 55 to 85 degrees relative to a horizontal plane.

9. The display device according to claim 1, wherein The thickness of the first link and the thickness of the second link gradually decrease from the first end to the second end of the link. 10 . The display device of claim 1 , further comprising at least one first sensor configured to detect a movement amount of the first slider and a movement amount of the second slider.

11. The display device according to claim 1 , further comprising: a first supporting member and a second supporting member, wherein the first supporting member and the second supporting member are respectively arranged on the left side and the right side of the first guide rail and the second guide rail inside the housing; a third link having a first end rotatably connected to the first support member and a second end rotatably connected to a point of the first link; and A fourth link has a first end rotatably connected to the second supporting member and a second end rotatably connected to a point of the second link.

12. The display device according to claim 11, wherein The thickness of the third link and the thickness of the fourth link gradually decrease from the first end to the second end of the link.

13. The display device according to claim 11, wherein The first supporting member includes a pair of first plates supporting the front and rear surfaces of the third link, respectively, and The second supporting member includes a pair of second plates respectively supporting a front surface and a rear surface of the fourth link.

14. The display device according to claim 13, wherein The third link and the fourth link respectively have a first protrusion and a second protrusion provided on the rear surface of the link, wherein the first plate and the second plate have first and second grooves corresponding in shape to the rotation radius of the first protrusion and the second protrusion, respectively, and The first groove and the second groove support the first protrusion and the second protrusion respectively. 15 . The display apparatus according to claim 11 , further comprising at least one second sensor configured to detect a rotation amount of the third link and a rotation amount of the fourth link.

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