Display device

Abstract

The present invention provides a display device comprising: a display module; a frame positioned behind the display module; a step adjustment unit that is positioned between the display module and the frame and adjusts the distance between the display module and the frame; and a magnet jig that controls the step adjustment unit from the front surface of the display module. The step adjustment unit includes: a holder assembly that is coupled to the rear surface of the display module and rotates together with the magnet jig when the magnet jig rotates; a coupler assembly that is rotatably coupled to the frame and becomes fastened to the holder assembly when the display module is installed on the frame; and a leveling screw that rotates by receiving the rotational force of the holder assembly through the coupler assembly, wherein the depth of insertion of the leveling screw into the frame is variable.

Description

display device

[0001] The present invention relates to a display device comprising a plurality of display modules.

[0002] Digital signage is a communication tool that can be used to drive marketing, advertising, training effectiveness, and customer experience for companies. It is a display device that provides specific information as well as broadcast programs in public places such as airports, hotels, hospitals, and subway stations.

[0003] Digital signage is a medium that displays various contents and commercial advertisements by installing display devices such as LCD (Liquid Crystal Display), PDP (Plasma Display Panel), and OLED (Organic Light Emitting Diode) in certain outdoor locations or on street furniture. Currently, it can be installed in all areas where the public moves, such as apartment elevators, subway stations, subways, buses, universities, banks, convenience stores, discount stores, and shopping malls.

[0004] When digital signage uses multiple display panels or display devices to form a single screen, there is a problem of screen distortion occurring due to the gap between adjacent display panels in the vertical or left-right directions.

[0005] The present invention aims to solve the aforementioned problems and other problems. Furthermore, the present invention may provide a multi-display device capable of adjusting the height difference or elevation difference between adjacent display modules.

[0006] The present invention provides a display device comprising: a display module; a frame positioned at the rear of the display module; a step adjustment unit positioned between the display module and the frame and adjusting a gap between the display module and the frame; and a magnet jig controlling the step adjustment unit at the front of the display module, wherein the step adjustment unit comprises: a holder assembly coupled to the rear surface of the display module and rotating together when the magnet jig rotates; a coupler assembly rotatably coupled to the frame and fastened to the holder assembly when the display module is installed on the frame; and a leveling screw that rotates by receiving a rotational force of the holder assembly through the coupler assembly and has a variable insertion amount into the frame.

[0007] The holder assembly may include a first recess facing the rear surface, and the coupler assembly may include a second recess engaging the first recess.

[0008] The coupler assembly may include a first gear, the leveling screw may further include a second gear formed on an outer surface, and the step adjustment unit may include a spur gear that transmits the force of the first gear to the second gear.

[0009] The above spur gear may include a reduction gear including an input gear having a large diameter and an output gear having a small diameter.

[0010] The above coupler assembly and the leveling screw are arranged in the front-back direction and further include a gear shaft extending from the leveling screw and having an end inserted into the coupler assembly, and the gear shaft can constitute a rotational axis of the coupler assembly.

[0011] The holder assembly may further include a holder magnet, and the coupler assembly may include a coupler attached to the holder magnet.

[0012] The above holder magnet may have a circular shape and include a holder magnet having different poles arranged along the circumference, and the magnet jig may have a cylindrical shape including a plurality of poles divided corresponding to the poles of the holder magnet.

[0013] The above magnet jig can have different poles stacked in the longitudinal direction.

[0014] The above display module may include a plurality of display modules and may further include a displacement sensor that measures a step difference between adjacent display modules.

[0015] It may include a control unit that controls the display module to output a marker at a position corresponding to the holder assembly.

[0016] According to one embodiment of the present invention, the height difference or the elevation difference between adjacent display modules can be adjusted without separating the display modules from the frame.

[0017] In addition, according to one embodiment of the present invention, distortion of a displayed screen can be prevented by adjusting the height difference or the height difference between adjacently arranged display modules.

[0018] In addition, according to one embodiment of the present invention, the time consumed in the process of repeating attachment and detachment can be reduced and an accident in which the display module is damaged can be prevented.

[0019] The effects that can be obtained from the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by a person having ordinary skill in the art to which the present invention belongs from the description below.

[0020] FIG. 1 is a drawing illustrating a display device according to an embodiment of the present invention.

[0021] FIG. 2 is a drawing illustrating a process of assembling a display module of a display device according to one embodiment of the present invention.

[0022] FIG. 3 is a drawing illustrating a step between display modules of a display device according to one embodiment of the present invention.

[0023] FIG. 4 is a drawing illustrating a control method of a step adjustment unit of a display device according to an embodiment of the present invention.

[0024] FIG. 5 is a drawing illustrating a holder assembly of a display device according to one embodiment of the present invention.

[0025] FIG. 6 is a drawing illustrating a coupler assembly and a leveling screw of a display device according to one embodiment of the present invention.

[0026] FIG. 7 and FIG. 8 are exploded perspective views of a step adjustment unit of a display device according to one embodiment of the present invention.

[0027] FIG. 9 is a side view of a step adjustment module of a display device according to an embodiment of the present invention.

[0028] FIG. 10 is a perspective view illustrating a magnet jig and a holder magnet of a display device according to one embodiment of the present invention.

[0029] Hereinafter, embodiments disclosed in this specification will be described in detail with reference to the attached drawings. Regardless of the drawing numbers, identical or similar components will be given the same reference numbers and redundant descriptions thereof will be omitted. The suffixes "module" and "part" used for components in the following description are assigned or used interchangeably only for the convenience of writing the specification, and do not in themselves have distinct meanings or roles. In addition, when describing the embodiments disclosed in this specification, if it is determined that a specific description of a related known technology may obscure the gist of the embodiments disclosed in this specification, a detailed description thereof will be omitted. In addition, the attached drawings are only intended to facilitate easy understanding of the embodiments disclosed in this specification, and the technical ideas disclosed in this specification are not limited by the attached drawings, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and technical scope of the present invention.

[0030] Terms that include ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by these terms. These terms are used solely to distinguish one component from another.

[0031] When a component is referred to as being "connected" or "connected" to another component, it should be understood that it may be directly connected or connected to that other component, but that there may be other components intervening. Conversely, when a component is referred to as being "directly connected" or "connected" to another component, it should be understood that there are no other components intervening.

[0032] Singular expressions include plural expressions unless the context clearly indicates otherwise.

[0033] In this application, terms such as “include” or “have” are intended to specify the presence of a feature, number, step, operation, component, part or combination thereof described in the specification, but should be understood not to exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

[0034] Hereinafter, a light emitting diode (LED) panel is used as an example for the display panel, but the display panel applicable to the present invention is not limited to an LED panel, and may also be an organic light emitting diode (OLED), a plasma display panel (PDP), a field emission display (FED), or a liquid crystal display (LCD).

[0035] FIG. 1 is a drawing illustrating a display device (1000) according to an embodiment of the present invention, and FIG. 2 is a drawing illustrating a process of assembling a display module of the display device (1000) according to an embodiment of the present invention.

[0036] Referring to FIGS. 1 and 2, a multi-display device (1000) may include a display module (100) capable of displaying an image, a frame (200) supporting the display module (100), and a step adjustment unit (250) mounted between the display module (100) and the frame (200) to adjust the gap therebetween.

[0037] The display module (100) may include a display panel and a module cover positioned at the rear of the display panel. The module cover may be positioned at the rear of the display panel to protect the rear of the display panel from the outside, and may include a displacement adjustment unit for attachment to a frame and a connecting portion to which it is attached.

[0038] A display panel may include a plurality of pixels (R, G, B). The plurality of pixels (R, G, B) may be formed in each area where a plurality of data lines and a plurality of gate lines intersect. The plurality of pixels (R, G, B) may be arranged or arranged in a matrix form.

[0039] For example, a plurality of pixels (R, G, B) may include a red (Red, hereinafter referred to as 'R') sub-pixel, a green (Green, 'G') sub-pixel, and a blue (Blue, 'B') sub-pixel. The plurality of pixels (R, G, B) may further include a white (White, hereinafter referred to as 'W') sub-pixel.

[0040] The side of the display module (100) that displays an image may be referred to as the front or front. When the display module (100) displays an image, the side from which the image cannot be observed may be referred to as the rear or back. When viewing the display module (100) from the front or front, the upper side may be referred to as the upper side or upper surface. Similarly, the lower side may be referred to as the lower side or lower surface. Similarly, the right side may be referred to as the right side or right surface, and the left side may be referred to as the left side or left surface.

[0041] The display module (100) may be arranged so that multiple display modules (100) are adjacent to each other in the vertical direction or the left-right direction. The display module (100) of the present embodiment may have a form in which a plurality of display modules (100) are arranged side by side in the horizontal direction and are long in the vertical direction.

[0042] The frame (200) may be arranged at the rear of a plurality of display modules (100). The front of the frame (200) may face the rear of the display module (100). The frame (200) may be arranged to correspond to the display module (100) in the thickness direction or the front-back direction of the display module (100). The frame (200) may be formed in a picture frame shape with an open central area.

[0043] The frame (200) may have a size N times the size of the display module (100) so that multiple display modules (100) can be mounted thereon. For example, in the display device (1000) of the embodiment illustrated in FIG. 2, the length of the upper side of the frame (200) may be substantially equal to the length obtained by multiplying four of the display modules (100). However, this is not limited thereto. The frame (200) may be formed to be longer or shorter than the display module (100) depending on the external environment, such as the building or wall in which it is installed.

[0044] In FIGS. 1 and 2, it is illustrated that the display module (100) is formed of one frame (200), but it is not limited thereto. The frame (200) may include a plurality of frames with a size corresponding to the size of the display module (100).

[0045] FIG. 3 is a diagram illustrating a step difference between display modules of a display device (1000) according to one embodiment of the present invention. Adjacent display modules may have different thicknesses, or their thicknesses may differ during the frame assembly process. Alternatively, a height difference on the wall on which they are installed may occur, resulting in a step difference between display modules, as illustrated in FIG. 3 .

[0046] A step adjustment unit (250) that adjusts the distance between the display module (100) and the frame (200) is required to adjust the step between neighboring display modules.

[0047] A step adjustment unit (250) can be placed between a plurality of display modules (100) and a frame (200). The step adjustment unit (250) can be mounted on the frame (200) in the thickness direction of the display module (100). The step adjustment unit (250) mounted on the front of the frame (200) can be attached to the rear of the display module (100).

[0048] The step adjustment unit (250) can adjust the distance between the rear surface of the display module (100) and the front surface of the frame (200). There may be a plurality of step adjustment units (250). The step adjustment units (250) can be positioned at each end of the frame (200).

[0049] The step adjustment unit (250) finely adjusts the protrusion amount from the frame (200) to adjust the distance between the frame (200) and the display module (100). In order to adjust the protrusion amount of the step adjustment unit (250), the display module (100) must be separated from the frame (200), which makes the work cumbersome and makes it difficult to accurately determine the step between adjacent display modules (100).

[0050] Accordingly, the present invention aims to provide a display device (1000) capable of adjusting a step adjustment unit (250) while the display module (100) is coupled to a frame (200).

[0051] FIG. 4 is a drawing illustrating a control method of a step adjustment unit (250) of a display device (1000) according to one embodiment of the present invention.

[0052] The step adjustment unit (250) of the present invention contacts a magnetic jig (270) having a magnetic force on the front of the display module (100) and rotates it, thereby rotating the leveling screw (253) of the step adjustment unit (250) to adjust the distance between the display module (100) and the frame (200).

[0053] Fig. 4 is a drawing showing a portion where the step adjustment unit (250) is located. The display device (100) can output a marker (281) to the display module (100) at a position corresponding to the step adjustment unit (250) to guide the user to a position where the magnet jig (270) is in contact. The user can control the step adjustment unit (250) by contacting the magnet jig (270) to the marker (281).

[0054] The display module (100) may output the marker (281) only in the part that requires step adjustment, and may no longer output the marker (281) to the display module (100) once the forward / backward position adjustment of the display module (100) is completed.

[0055] FIG. 5 is a drawing illustrating a holder assembly (251) of a step adjustment unit (250) of a display device (1000) according to an embodiment of the present invention, and FIG. 6 is a drawing illustrating a coupler assembly (252) and a leveling screw (253) of a display device (1000) according to an embodiment of the present invention. FIGS. 7 and 8 are exploded perspective views of a step adjustment unit (250) of a display device (1000) according to an embodiment of the present invention.

[0056] The step adjustment unit (250) of the display device (1000) is coupled to the back surface of the display module (100) and includes a holder assembly (251) including a holder magnet (2512), a coupler assembly (252) including a coupler (2522) attached to the holder magnet (2512), and a leveling screw (253) coupled to the frame (200) and rotating to adjust the insertion amount of the frame (200).

[0057] FIG. 5 illustrates a holder assembly (251) attached to the back surface of a display module (100), and the holder assembly (251) may include a fixing plate (2511) fixed to the back surface of the display module (100), a first rotation plate (2513) rotatably coupled to a holder shaft (2515) protruding from the fixing plate (2511), and a holder magnet (2512) fixed to the first rotation plate (2513).

[0058] An E-ring (2514) may be further included to secure the holder magnet (2512) and the first rotation plate (2513) from being separated from the holder shaft (2515). The holder magnet (2512) is secured to the first rotation plate (2513) and can rotate together with the first rotation plate (2513).

[0059] The first rotating plate (2513) may include a plurality of protrusions protruding toward the back surface as illustrated in FIG. 4, and the holder magnet (2512) may be mounted in the space between the fixed plate (2511) and the first rotating plate (2513) and may have a ring shape including a hole through which the holder shaft (2515) passes.

[0060] Referring to FIG. 6, a coupler assembly (252) is illustrated. The coupler assembly (252) includes a coupler (2522) attached by the magnetic force of a holder magnet (2512), and may include a second rotating plate (2523) on which the coupler (2522) is mounted. The second rotating plate (2523) may include a second protrusion protruding forward, and the second protrusion may be engaged with the first protrusion when the coupler (2522) is attached to the holder magnet (2512).

[0061] When the second protrusion of the second rotating plate (2523) is engaged with the first protrusion of the first rotating plate (2513), the first rotating plate (2513) and the second rotating plate (2523) rotate together when the holder magnet (2512) rotates.

[0062] Unlike the holder magnet (2512) that is integrally formed with the first rotation plate (2513), the coupler (2522) does not necessarily need to rotate together with the second rotation plate (2523), and only the position in the forward and backward direction needs to be fixed. In other words, the coupler (2522) may be rotatably coupled to the second rotation plate (2523) by only coupling the shaft thereto, or may be fixed with an adhesive or the like.

[0063] If the coupler (2522) is a magnet with magnetic force and does not rotate like the holder magnet (2512), the opposing poles may become different and a repulsive force may be generated, so it can be fixed to the second rotating plate (2523).

[0064] The rotational power of the coupler (2522) unit may be directly transmitted to the leveling screw (253), or may include a spur gear that transmits the rotational power in the middle. In particular, in order to finely adjust the front-rear position of the display module (100), it is necessary to reduce the rotational speed of the magnet jig (270).

[0065] For example, the rotation speed of the leveling screw (253) can be reduced so that it rotates only 10° when the magnet jig (270) rotates once. To reduce the rotation speed in this way, a reducer (254) is required, and the reducer (254) can adjust its reduction ratio by connecting multiple reduction gears (2543).

[0066] Referring to Fig. 8, a first gear (2524) is positioned on the back surface of the second rotating plate (2523), and a second gear (2534) is also positioned on the leveling screw (253). A reducer (254) positioned between the first gear (2524) and the second gear (2534) and reducing the rotational speed of the first gear (2524) and transmitting it to the second gear (2534) may be included.

[0067] The reducer (254) includes a unit reduction gear (2543) composed of a large disc (2541) having a large number of teeth and a small disc (2542) having a small diameter and a small number of teeth that is coupled to the back surface thereof, and the large disc (2541) and the first gear (2524) mesh with each other and the small disc (2542) and the second gear (2534) mesh with each other so that the rotational amount can be reduced by the ratio of the number of teeth of the large disc (2541) to the number of teeth of the small disc (2542).

[0068] In other words, the rotational force input to the large disc (2541) is output to the small disc (2542), which has the effect of reducing the rotational speed. Therefore, the large disc (2541) can be called the input gear and the small disc (2542) can be called the output gear.

[0069] When multiple unit reduction gears (2543) are connected, the amount of reduction can be increased, and in this embodiment, the reduction gear (254) can include three unit reduction gears (2543), and some of the reduction gears can rotate around a different axis (2545) than the first gear (2524).

[0070] In this embodiment, an odd number of unit reduction gears (2543) are used so that the rotation axes of the first gear (2524) and the second gear (2534) are the same, but the first gear (2524) and the second gear (2534) may be arranged misaligned.

[0071] A gear shaft (2535) extending forward from the leveling screw (253) can pass through a second rotation plate (2523) including a first gear (2524). The gear shaft (2535) is coupled to the leveling screw (253) and rotates together with the leveling screw (253), and the second rotation plate (2523) is rotatably coupled to the gear shaft (2535) so that the holder assembly (251) rotates corresponding to the rotational speed regardless of the rotation of the gear shaft (2535).

[0072] Fig. 9 is a side view of a step adjustment module of a display device (1000) according to an embodiment of the present invention. Referring to Fig. 9, when a magnet jig (270) approaches the front of a display module (100), a holder magnet (2512) is attached to the magnet jig (270), and when the magnet jig (270) is rotated (①), the holder magnet (2512) also rotates and the first rotation plate (2513) rotates (②).

[0073] The first rotating plate (2513) and the second rotating plate (2523) connected by the first and second protrusions also rotate (③), and the first gear (2524) located on the second rotating plate (2523) can reduce the rotational speed by the reducer (254) (④).

[0074] The second gear (2534) that is engaged with the teeth of the small disc (2542) of the reduction gear (2543) rotates, and the forward / backward position of the leveling screw (253) on the frame (200) changes, so that the display module (100) can adjust its forward / backward position.

[0075] If the opposing surfaces of the holder magnet (2512) and the magnet jig (270) have the same poles in the circumferential direction, the holder magnet (2512) will slip and not rotate even if the magnet jig (270) is rotated. Therefore, the holder magnet (2512) and the magnet jig (270) of the present invention can be configured so that different poles are alternately arranged in the circumferential direction so that the holder magnet (2512) can also rotate when the magnet jig (270) is rotated.

[0076] FIG. 10 is a perspective view illustrating a magnet jig (270) and a holder magnet of a display device (1000) according to one embodiment of the present invention.

[0077] In general, a flat disc-shaped magnet can be divided into a fan shape to form a multi-pole magnet with two or four poles along the circumference since the front and back of the disc are composed of different poles. If the poles are divided too little, slippage may occur, and if the poles are divided too much, it may be difficult to manufacture the holder magnet (2512) and the magnet jig (270). Therefore, as shown in Fig. 9, it can be composed of four poles SNSN along the circumference. The opposite sides may have different poles arranged.

[0078] When the magnet jig (270) is brought into contact with the display unit, the N pole of the magnet jig (270) is coupled with the S pole of the holder magnet (2512), and the S pole of the magnet jig (270) is coupled with the N pole of the holder magnet (2512). When the magnet jig (270) is rotated, the S pole is positioned at the N pole position of the magnet jig (270), and at this time, it faces the S pole of the holder magnet (2512), so that the S pole of the holder magnet (2512) rotates in the same direction as the magnet jig (270) due to the attractive force of the N pole of the magnet jig (270) and the repulsive force of the S pole.

[0079] Meanwhile, the magnet jig (270) can be arranged as shown in Fig. 10 by attaching multiple disc-shaped magnets to provide strong magnetic force. The drawing shows a magnet jig (270) having four disc-shaped multi-pole magnets attached, but the number may be greater or less. If the magnetic force of the magnet jig (270) is strong, the step adjustment unit (250) can be controlled without slipping.

[0080] According to one embodiment of the present invention, the height difference or the height difference between adjacent display modules (100) can be adjusted without separating the display modules (100) from the frame (200).

[0081] In addition, according to one embodiment of the present invention, distortion of the displayed screen can be prevented by adjusting the height difference or the height difference between adjacently arranged display modules (100).

[0082] In addition, according to one embodiment of the present invention, the time consumed in the process of repeatedly attaching and detaching the display module (100) can be reduced and an accident in which the display module (100) is damaged can be prevented.

[0083] The above detailed description should not be construed as limiting in any respect and should be considered illustrative only. The scope of the present invention should be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the present invention are intended to be included within the scope of the present invention.

Claims

1. Display module; A frame located at the rear of the above display module; A step adjustment unit positioned between the display module and the frame and adjusting the gap between the display module and the frame; and Including a magnet jig for controlling the step adjustment unit on the front of the above display module, The above step adjustment unit, A holder assembly that is coupled to the back surface of the display module and rotates together when the magnet jig rotates; A coupler assembly rotatably coupled to the frame and fastened to the holder assembly when the display module is installed on the frame; and A display device including a leveling screw that rotates by receiving rotational force from the holder assembly through the coupler assembly and has a variable insertion amount into the frame.

2. In paragraph 1, The holder assembly includes a first recess facing the back, A display device, characterized in that the coupler assembly includes a second protrusion that engages with the first protrusion.

3. In paragraph 1, The above coupler assembly includes a first gear, The above leveling screw further includes a second gear formed on the outer surface, The above step adjustment unit, A display device characterized by including a spur gear that transmits the power of the first gear to the second gear.

4. In paragraph 3, The above spur gear A display device characterized by a reduction gear including a large-diameter input gear and a small-diameter output gear.

5. In paragraph 3, The above coupler assembly and the above leveling screw are arranged in the front-back direction. Further comprising a gear shaft extending from the leveling screw and having an end inserted into the coupler assembly; A display device characterized in that the above gear shaft forms the rotation axis of the above coupler assembly.

6. In paragraph 1, The above holder assembly further includes a holder magnet, A display device characterized in that the coupler assembly includes a coupler attached to the holder magnet.

7. In paragraph 6, The above holder magnet comprises a holder magnet having a circular shape and different poles arranged along the circumference, A display device characterized in that the magnet jig has a cylindrical shape including a plurality of poles divided corresponding to the poles of the holder magnet.

8. In paragraph 7, A display device characterized in that the above magnet jig has different poles stacked in the longitudinal direction.

9. In paragraph 1, The above display module comprises a plurality of: A display device further comprising a displacement sensor for measuring a step difference between adjacent display modules.

10. In paragraph 9, A display device characterized by including a control unit that controls the display module to output a marker at a position corresponding to the holder assembly.

Images