Display apparatus

Disclosed herein is a display apparatus. The display apparatus includes a display module configured to display a screen, a frame configured to support the display module, a magnetic coupling device configured to couple the frame to the display module by pulling the display module toward the frame by using the magnetic attraction force, and a separation prevention device configured to mechanically prevent the display module from being separated from the frame and configured to be operated by the magnetic force.

BACKGROUND

The disclosure relates to a display apparatus in which a display module is coupled to a frame by a magnet, and more particularly, to a display apparatus capable of preventing a display module from being separated from a frame.

2. Description of Related Art

A display apparatus is a type of output device that visually displays data information such as characters and graphics, and images. Recently, a display apparatus employing a liquid crystal display (LCD) panel and an organic light emitting diode (OLED) panel has been widely used.

There is growing need of high luminance, high resolution, large-sized, high-efficiency, and low-power display apparatuses. Therefore, a micro light emitting diode (LED) panel that is manufactured by directly mounting an inorganic light emitting diode on a substrate has been researched as a new product to replace or supplement the conventional LCD panel and OLED panel.

The micro LED panel may easily utilize a modular display technology, and the modular display technology is to make a large size screen by generating small sized panels from micro LEDs and tiling the plurality of modules in the vertical and horizontal direction, continuously. In addition, the magnetic force of the magnet may be used for simplicity of the structure and ease of assembly at the time of tiling a plurality of modules in the frame.

However, as for the display apparatus installed on a ceiling or an inclined surface rather than a wall, a constant force may be applied to the plurality of modules in the direction opposite to the direction of the connection, or an unexpected impact may be applied to the display apparatus. Therefore, a safety device is required to prevent the plurality of modules from being separated from the frame.

SUMMARY

Therefore, it is an aspect of the present disclosure to provide a display apparatus capable of preventing a plurality of display modules installed in a frame, from being separated from the frame.

In accordance with an aspect of the disclosure, a display includes a frame, a display module including at least one substrate on which a plurality of light emitting elements is mounted, and a bracket to which the at least one substrate is attached, a magnetic coupling device configured to couple the frame to the display module by pulling the display module toward the frame by using the magnetic attraction force, and a separation prevention device configured to mechanically prevent the display module from being separated from the frame and configured to be operated by the magnetic force.

The separation prevention device may include a catch fixed to the display module, and a latch installed in the frame to be rotatable between a locking position where the latch is locked in the catch, and an unlocking position where the locking between the latch and the catch is released.

The latch may be rotatable between the locking position and the unlocking position by the magnetic force.

When one of the N pole and the S pole is moved to the front of the latch, the latch may be rotated from the unlocking position to the locking position by the magnetic attraction force and when the other of the N pole and the S pole is moved to the front of the latch, the latch may be rotated from the locking position to the unlocking position by the magnetic repulsion force.

A magnet may be mounted to the latch.

The display apparatus may further include a first magnetic member installed in the bracket to fix the latch to the locking position by using the magnetic attraction force.

The first magnetic member may include a coupling member configured to fix the catch to the bracket.

The display apparatus may further include a second magnetic member installed in the frame to fix the latch to the unlocking position by using the magnetic attraction force.

The separation prevention device may include a shaft member configured to couple the latch to the frame and configured to form a rotational axis of the latch.

A locking hole may be formed in the catch, and the latch may include a locking protrusion inserted and locked in the locking hole.

The catch may be fixed to a back surface of the bracket.

The frame may have a rectangular frame shape including a vertical frame and a horizontal frame, and the separation prevention device may be placed on the vertical frame.

The rotational axis of the latch may be in parallel to the horizontal frame.

The magnetic coupling device may include a plurality of magnetic coupling devices installed at corners of the frame, and the separation prevention device may include a plurality of separation prevention devices installed among the plurality of magnetic coupling devices.

In accordance with another aspect of the disclosure, a display apparatus includes a frame, a display module coupled to the frame by the magnetic force, a catch installed on a back surface of the display module, and a latch installed in the frame, and configured to be rotatable to be locked in the catch upon the approach of the magnet.

The display module may include a bracket, and at least one substrate attached to a front surface of the bracket and provided with a plurality of light emitting elements mounted on the at least one substrate.

The display apparatus may further include a magnet mounted to the latch.

The display apparatus may further include a magnetic member installed in the bracket and the frame to fix the latch by using the magnetic attraction force.

The display module may be mechanically prevented from being separated from the frame because a locking protrusion of the latch is inserted and locked in a locking hole of the catch.

DETAILED DESCRIPTION

Embodiments described in the present disclosure and configurations shown in the drawings are merely examples of the embodiments of the present disclosure, and may be modified in various different ways at the time of filing of the present application to replace the embodiments and drawings of the present disclosure.

The singular forms “a,” “an” and “the” may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The shape and size of each component illustrated in the drawings may be enlarged for clear expressions

In this disclosure, the terms “including”, “having”, and the like are used to specify features, numbers, steps, operations, elements, components, or combinations thereof, but do not preclude the presence or addition of one or more of the features, elements, steps, operations, elements, components, or combinations thereof.

Reference will now be made in detail to embodiments of the disclosure, examples of which are illustrated in the accompanying drawings.

FIG. 1is a view of a display apparatus according to an embodiment of the disclosure.FIG. 2is a view of a frame and a display module according to an embodiment of the disclosure.FIG. 3is a view of the frame according to an embodiment of the disclosure.

InFIG. 1, X-axis, Y-axis, and Z-axis directions perpendicular to each other are indicated, and the X-axis direction is the left-right direction, the Y-axis direction is the up-down direction, and the Z-axis direction is the front-rear direction.

HereinafterFIGS. 1 to 3will be referred. A display apparatus1is an apparatus for displaying information, materials, and data in the form of characters, graphics and graphs. The display apparatus1may be implemented with an advertisement board, an electric sign board, a screen, a television, and a monitor. The display apparatus may be installed on a wall or a ceiling, or may be installed on the ground of the indoor or the outdoor by a stand (not shown).

The display apparatus1may include a display module30configured to display a screen and a frame20coupled to the rear of the display module30to support the display module30.

The display module30includes a substrate50and a bracket40to which the substrate50is attached. Although six substrates50are attached to one bracket40according to an embodiment of the disclosure, the number of the substrates50attached to the bracket40is not limited thereto. Unlike this embodiment, only one substrate50may be attached to a single bracket40, or a different number of substrates50may be attached to a single bracket40. The substrate50may be attached to the front surface of the bracket40through an adhesive or a double-sided adhesive tape.

A plurality of light emitting elements51may be mounted on the substrate50and a protective member52may be provided on the substrate50to protect the light emitting element51or to improve optical performance.

The substrate50may be formed of glass, polyimide (PI), or FR4. A black layer may be formed on the entire surface of the substrate50to absorb external light to improve contrast.

A plurality of light emitting elements51may include a red LED, a green LED and a blue LED, and the red LED, the green LED, and the blue LED correspond to a sub-pixel. The plurality of light emitting elements51may be apart from each other with a certain distance, and the distance among the plurality of light emitting elements51may vary according to the resolution and size of the display apparatus1.

The plurality of light emitting elements51may be formed of an inorganic material, and may include a micro-LED having a width of several micrometers (μm) to several hundreds of micrometers (μm) and a length of several micrometers (μm) to several hundreds of micrometers (μm). The plurality of light emitting elements51may be picked up from a silicon wafer and transferred directly onto the substrate50.

The protective member52may be formed of a transparent or fluorescent material such as an acrylic resin, a polyimide resin, an epoxy resin, or a polyurethane resin, and may be formed to cover the plurality of light emitting elements51mounted on the substrate50.

In this embodiment, the display apparatus1includes four frames20a-20dand eight display modules30a-30h. However, the number of frames and the number of display modules are not limited thereto.

The display modules30may be arranged adjacent to each other in the up-down direction (Y-axis direction) and/or the left-right direction (X-axis direction). That is, the display modules30may be arranged in an M*N matrix form. In this embodiment, the eight display modules30are arranged in the form of a 4*2 matrix.

At least one display module30may be coupled to a single frame20. Two display modules30are coupled to the single frame20in the left and right side, according to an embodiment of disclosure, but is not limited thereto.

The frame20may be formed in a frame shape. That is, the frame20may include an upper horizontal frame21, a lower horizontal frame22, a left vertical frame23, and a right vertical frame25and may have a rectangular frame shape. The frame20may further include a middle vertical frame24vertically formed to connect the upper horizontal frame21and the lower horizontal frame22.

The display module30may be coupled to the frame20through a magnetic coupling device60. The magnetic coupling device60may include a magnet, and the magnetic coupling device60may tightly couple the display module30to the frame20by the magnetic force of the magnet. A plurality of magnetic coupling devices60may be provided and the magnetic coupling device60may be installed at corners of the frame20.

The display apparatus may include a rear cover10coupled to the rear of the frame20to cover the rear of the display apparatus1. A control board configured to drive the plurality of display modules30and a power supplier configured to supply power to the plurality of display modules30may be disposed between the display modules30and the rear cover10.

As described above, the display modules30are coupled to the frame20by the magnetic force of the magnetic coupling device60installed on the frame20. Therefore, the display modules30may be separated from the frame20when an external force larger than the magnetic force of the magnetic coupling device60is applied.

Therefore, the display apparatus1according to an embodiment of the disclosure includes a separation prevention device configured to prevent the display modules30from being inadvertently separated from the frame20. The separation prevention device may include a latch80rotatably installed in the frame20and a catch71(seeFIG. 5) installed in the bracket40to be interacted with the latch80. The separation prevention device may be configured to mechanically prevent the display module30from being separated from the frame20by inserting the latch80into the catch71.

Hereinafter a specific configuration of the separation prevention device will be described.

FIG. 4is a view of a latch of a separation prevention device according to an embodiment of the disclosure.FIG. 5is a rear perspective view of the display module according to an embodiment of the disclosure, illustrating the display module provided with a catch of the separation prevention device.FIGS. 6 to 8are views of locking the display module by the separation prevention device according to the embodiment of the disclosure.FIGS. 9 to 11are views of unlocking the display module by the separation prevention device according to the embodiment of the disclosure.

Referring toFIGS. 3 to 11, the separation prevention device includes the catch71fixed to the display module30, and the latch80configured to be rotatable between a locking position P1where the latch80is locked in the catch71and an unlocking position P2where the engagement with the catch71is released.

A plurality of latches80may be provided and installed in the vertical frames23,24and25of the frame20. The latches80may be placed between the magnetic coupling devices60at the corners of the frame20.

The latch80may be rotatably coupled to the frame20. For this, a shaft hole81may be formed in the latch80, and a coupling hole26may be formed in the frame20. A shaft member85may penetrate the shaft hole81and the coupling hole26. The shaft member85may include a shaft portion87forming a rotational axis of the latch80, a male thread86screwed into the coupling hole26, and a head88formed in one end portion of the shaft portion87to prevent the separation of the latch80.

The latch80may include a locking protrusion84protruding to be inserted and locked in the locking hole75formed in the catch71.

The latch80may be rotated by the magnetic force of the magnet. For this, the latch80may include a magnet mounting portion82, and the magnet mounting portion82may be provided with a magnet83. The magnet83may be a permanent magnet. The magnet83may be a soft plastic magnet, a neodymium magnet or a ferrite magnet.

With the above mentioned configuration, when a magnet, which has the magnetic attraction force with the magnet83of the latch80, approaches the front side of the latch80, the latch80may be rotated to the locking position P1. On the other hand, when a magnet, which has the magnetic repulsion force with the magnet83of the latch80, approaches the front side of the latch80, the latch80may be rotated to the unlocking position P2.

The catch71may be fixed to a back surface44of a bracket body41to correspond to the position of the latch80. The bracket40may include the bracket body41formed in a plate shape to support the substrate50, and an edge wall45protruding from upper, lower, left, and right edges of the bracket body41to the rear side. A slot47may be formed in a rear end portion46of the edge wall45to expose the magnetic coupling device60.

The catch71may include a fixed portion72tightly fixed to the back surface44of the bracket, and an extension portion74bent from the fixed portion72and extended to the frame20side. The fixing portion72may be fixed to the back surface44of the bracket through a separate coupling member91such as a screw, nail, pin, or rivet. For this, a coupling hole73may be formed in the fixed portion72to allow the coupling member91to be coupled thereto.

The extension portion74may be provided with the locking hole75to which the locking protrusion84of the latch80is inserted and locked. When the locking protrusion84is inserted and locked in the locking hole75, it may be possible to prevent the display module30from being separated from the frame20in the front-rear directions (X-axis direction).

The display apparatus1may further include a first magnetic member interacting with the magnet83of the latch80to hold the latch80in the locking position P1. That is, when the latch80is in the locking position P1, the latch80may be fixed in the locking position P1by the magnetic attraction force between the magnet83of the latch80and the first magnetic member.

The first magnetic member may be a magnetic material that well magnetized such as iron, nickel and cobalt, or a magnet. The first magnetic member may include the above mentioned coupling member91configured to fix the catch71to the bracket40.

The display apparatus1may further include a second magnetic member92interacting with the magnet83of the latch80to hold the latch80in the unlocking position P2. That is, when the latch80is in the unlocking position P2, the latch80may be fixed in the unlocking position P2by the magnetic attraction force between the magnet83of the latch80and the second magnetic member92.

The second magnetic member92may be a magnetic material that well magnetized such as iron, nickel and cobalt, or a magnet. The second magnetic member92may be a coupling member such as screw, nail, pin, or rivet, and coupled to the frame20.

An operation of locking the separation prevention device according to an embodiment of the disclosure will be briefly described with reference toFIGS. 6 to 8.

As illustrated inFIG. 6, when the latch80is in the unlocking position P2, the display module30is moved to the frame20side.

As illustrated inFIG. 7, a rotating tool130is moved to the front of the display module30. The rotating tool130may include a tool body131and a tool magnet133mounted to the tool body131.

When a front end of the magnet83is the N pole and a rear end of the magnet83is the S pole, the rotating tool130, in which a front end of the tool magnet133is the N pole and a rear end of the tool magnet133is the S pole, is moved to the latch80. When the rotating tool130is sufficiently approached, the magnetic attraction force may be applied between the tool magnet133of the rotating tool130and the magnet83of the latch80. Accordingly, the latch80is rotated to the locking position P1and the locking protrusion84of the latch80is inserted and locked in the locking hole75of the catch71.

When the separation prevention device is locked as described above, the latch80and the catch71may be interlocked with each other and thus it may be possible to mechanically prevent the display module30from being separated from the frame20in the front side.

As illustrated inFIG. 8, even when the rotating tool130is separated again, the magnetic attraction force may be applied between the magnet83of the latch80and the first magnetic member91installed in the bracket40, so as to prevent the rotation of the latch80.

An operation of unlocking the separation prevention device according to an embodiment of the disclosure will be briefly described with reference toFIGS. 9 to 11.

As illustrated inFIG. 9, the rotating tool130, in which a front end of the tool magnet133is the S pole and a rear end of the tool magnet133is the N pole, is moved to the front of the display module40. When the rotating tool130is sufficiently approached, the magnetic repulsion force may be applied between the tool magnet133of the rotating tool130and the magnet83of the latch80. Accordingly, the latch80is rotated to the unlocking position P2and the locking protrusion84of the latch80is released from the locking hole75of the catch71.

As illustrated inFIG. 10, even when the rotating tool130is separated again, the magnetic attraction force may be applied between the magnet83of the latch80and the second magnetic member92installed in the fame20, so as to prevent the rotation of the latch80.

As illustrated inFIG. 11, when the locking of the separation prevention device is released, it may be possible to separate the display module30from the frame20by pulling the display module30.

As is apparent from the above description, it may be possible to prevent the plurality of modules from being inadvertently separated from the frame, even when a constant force is applied to the plurality of modules in the direction opposite to the direction of connection, or an unexpected impact is applied to the display apparatus because the display apparatus is installed on a ceiling or an inclined surface rather than on a wall.