KR20160143471A - Display Apparatus - Google Patents

Abstract

The present invention relates to a display device. The display device includes: a main body; and a driving unit which is electrically connected to the main body and supports the main body to rotate the main body in left and right directions. The driving unit includes an upper plate which goes up and down. Accordingly, the present invention can stably support a TV body and move the TV body in a preset direction.

Description

Display Apparatus [0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a display device, and more particularly, to a display device that uses a cube stand supporting a large TV to raise and lower a TV body or turn the TV body left and right.

Moving away from curved or bendable conventional flat panel displays, with the introduction of modified display products in recent years, mounting on motors and actuator actuators has also increased in display products. In particular, as the display device becomes larger, the driving body stably supports the display screen, and at the same time, the driving body has an appropriate size and proper weight for moving the display screen in a predetermined direction or rotating in a given direction, There is a need to do.

A display device according to an embodiment of the present invention includes a driving unit electrically connected to a TV main body to stably support the TV main body and to move the main body in a predetermined direction or to rotate the main body in a given direction, And it is an object of the present invention to provide a display device including a weighted woofer speaker and a power supply unit among constituent elements of the TV main body so as to secure the weight of the driving body itself.

According to an aspect of the present invention, there is provided a display device including: a main body; And a driving body electrically connected to the main body and supporting the main body so as to be rotatable in the left and right direction, wherein the driving body includes a top plate that ascends and descends. In this case, the upper plate can be raised when the power of the main body is turned on.

The main body includes: a signal processing unit for processing signals and outputting audio and video signals; A first speaker for outputting the audio signal; A display panel for displaying the video signal; And a control unit for controlling the main body and the driving body.

The driving body includes: a shaft cover for guiding movement of the upper plate; And a shaft disposed inside the shaft cover and coupled to the support member to rotate the main body. A second speaker for outputting an audio signal output from the main body; And a power unit disposed on left and right sides of the second speaker and supplying power to the main body and the driving body.

The first power source board constituting the power source unit may be disposed in parallel with the left or right side plate of the driving unit. The driver may include a lower plate, and the lower plate may have at least one hole for discharging the sound output from the second speaker to the outside of the driving body. No holes are formed in the front plate, the left plate and the right plate of the driving body. The rear plate of the driving body may be coupled to the driving body using a magnet.

The driving body further includes a light emitting portion, the upper plate is coupled to the light emitting portion, and the light emitting portion can emit light when the upper plate moves. The light emitting unit may include a rear chassis and a light emitting source. The upper plate cover can be fastened to the upper plate using a magnet. The driving body may further include a weight body. The weight of the weight may be determined by the size of the main body and the weight of the second speaker included in the driving body.

At least one of a power cable, an audio signal cable and a data cable may be disposed inside the shaft cover.

The driving unit includes a driving unit, and the driving unit includes: a first actuator that moves the upper plate; And a second actuator for rotating the shaft. One side of the shaft is coupled with a worm gear, and the worm gear can be coupled with a dummy gear that supports the shaft. And a reinforcing member for supporting the shaft may be disposed around the second actuator and the shaft.

The main body further includes a rear cover, and the rear cover may be formed with a hole oriented in the vertical direction. The first speaker may be disposed at a lower end of the main body.

The circuit board including the signal processing unit or the control unit may be disposed at a central portion of the main body.

The second loudspeaker processes bass and discharges sound to the outside through a hole formed in the lower plate of the driving body.

According to another aspect of the present invention, there is provided a display device comprising: a main body having a display panel; And a driver electrically connected to the main body and disposed on a lower side of the main body; Wherein the driving body includes a top plate that is raised and lowered at an upper portion of the driving body and radiates light into a gap between the top of the driving body and the top plate when the top plate is lifted. Do.

The upper plate may include a light emitting portion coupled along a bottom edge of the upper plate.

The top plate rises when the main body is powered on, and the light emitting unit can emit light when the top plate rises.

The driving body includes: a shaft supporting a rear surface of the main body; And a driving unit for raising and lowering the upper plate and rotating the shaft to the left and right.

Wherein the driving body includes: a shaft cover which covers the shaft and guides the lifting and lowering of the upper plate; A support member connected to a rear surface of the main body; And a connection member interconnecting the shaft and the support member.

Preferably, the shaft cover has a through hole through which the connecting member passes, and the width of the through hole is wider than the width of the connecting member.

The main body includes a rear cover covering the rear chassis at the rear, and the rear cover may have first through third holes for radiating heat generated inside the main body to the outside of the main body.

Preferably, the first and third holes are formed in the upper and lower portions of the rear cover along the width direction of the rear cover, and are formed to be oriented in different directions.

A pair of first speakers may be disposed on the left and right sides of the inner lower side of the main body, and a single second speaker may be disposed on the center of the inner lower side of the driving body.

Wherein the main body includes a rear cover having a plurality of holes for radiating heat generated inside the main body to the outside of the main body, And may be formed at a lower portion of the rear cover.

And the second speaker may be arranged to set the center of gravity of the driving body to a central lower portion of the driving body.

The present invention may further include a sensor unit disposed around the shaft for sensing the rotation of the shaft.

The sensor unit includes: a switch board fixed to one side of the shaft; And a first sensor installed on the switch board and detecting a gap between the switch board and a structure around the rotation of the shaft. The first sensor may be any one of a proximity sensor, an optical sensor, an ultrasonic sensor, and an infrared sensor.

The sensor unit may further include a second sensor installed on the switch board, for defining a maximum angle of rotation of the shaft in the left and right directions. The second sensor may be a limit switch that operates while interfering with a part of the structure surrounding the switch board according to a rotation operation of the shaft.

According to another aspect of the present invention, there is provided a display device including: a main body including a signal processing unit for outputting audio and video signals, a display panel for displaying the video signal, and a control unit; A driving body electrically connected to the main body and supporting the main body while rotating the main body in a lateral direction; And an upper plate constituting an upper surface of the driving body and being lifted or lowered according to the occurrence of an event. The event may be generated by power on, off, or user input of the display device.

According to another aspect of the present invention, there is provided a display device including: a main body having a display panel; A driving body electrically connected to the main body and supporting the main body while rotating the main body in a lateral direction; And an upper plate which constitutes an upper surface of the driving body and which is separated from the driving body and is lifted or lowered.

According to another aspect of the present invention, there is provided a display device including: a main body including a signal processing unit, a first speaker, a display unit, and a control unit; A second speaker for outputting an audio signal output from the signal processing unit, and a second speaker for outputting an audio signal based on the signal output from the control unit, A driving body including a light emitting portion for emitting light; And an upper plate which constitutes an upper surface of the driving body and moves up or down separately from the driving body, and the light emitting unit emits light when the upper plate is lifted.

1 is a diagram illustrating a configuration of a display device according to an embodiment of the present invention.
2A is a front view of a display device according to an embodiment of the present invention.
2B is a block diagram of a display device according to an embodiment of the present invention.
3A and 3B are top and side views of a display device.
4A is a view showing a front surface of a display device with a display panel removed.
4B to 4G are views showing a rear surface of the display device.
5 is a view showing a driving body for supporting a main body of a display device.
6A is an exploded perspective view showing a connection structure between the support member and the shaft.
FIG. 6B is a cross-sectional view along the FF line shown in FIG. 5; FIG.
7 is a view showing the inside of the driving body.
8 is a front view of the inside of the driving body.
Fig. 9 is a rear view of the inside of the driving body.
10A is a top view of the upper plate.
10B is a view showing a lower surface of the upper plate and a light emitting portion.
10C is a perspective view of the upper plate and the light emitting portion observed from the side.
10D is a perspective view of the upper plate and the light emitting portion observed from the lower side of the side.
10E is an exploded view of the upper plate and the light emitting portion.
11 is a view showing the lower plate and main parts of the driving body.
12 is a view showing the inside of the driving body.
Fig. 13 is a detailed view of the periphery of the shaft of the driving body.
14 is a view showing a side surface of the lifter and the first actuator.
15 is a detailed view of the lifter and the first actuator.
16 is a view showing the shaft and the reinforcing member.
17 is an enlarged view of the vicinity of the worm gear.
18 is a flowchart illustrating a process of lifting a top plate in a display device according to an embodiment of the present invention.
19 is a view showing a switch board disposed around the shaft and the shaft.
20 is an enlarged view of the periphery of the switch board.
21 is a view showing a switch board.
22 is a view showing the distance between the stepped portions according to the position of the switch board.
23 is a diagram showing values output from the proximity sensor in accordance with the rotation of the switch board.
24 is a flowchart showing a process of setting the shaft to the center position.

Hereinafter, one embodiment of the present invention will be described with reference to the accompanying drawings. It should be understood, however, that it is not intended to be limited to the particular embodiments of the invention but includes various modifications, equivalents, and / or alternatives of the embodiments of the invention. In connection with the description of the drawings, like reference numerals may be used for similar components.

In this specification, the expressions "having," " having, "" comprising," Quot ;, and does not exclude the presence of additional features.

As used herein, the expressions "A or B," "at least one of A and / or B," or "one or more of A and / or B," may include all possible combinations of the listed items . For example, "A or B," "at least one of A and B," or "at least one of A or B" includes (1) at least one A, (2) Or (3) at least one A and at least one B all together.

The expressions "first," " second, "" first," or "second, " and the like in this specification are intended to encompass various components, regardless of their order and / or importance, Do not. These representations may be used to distinguish one component from another. For example, the first user equipment and the second user equipment may represent different user equipment, regardless of order or importance. For example, without departing from the scope of the present disclosure, the first component may be referred to as a second component, and similarly, the second component may be named as the first component.

(Or functionally or communicatively) coupled with / to "another component (eg, a second component), or a component (eg, a second component) Quot; connected to ", it should be understood that an element may be directly connected to another element, or may be connected through another element (e.g., a third element). On the other hand, when it is mentioned that a component (e.g. a first component) is "directly connected" or "directly connected" to another component (e.g. a second component) It can be understood that there is no other component (e.g., a third component) between the elements.

The phrase " configured to be used "as used herein should be interpreted according to circumstances, such as, for example, having " having the capacity to, To be designed to, "" adapted to, "" made to, "or" capable of ". The term " configured (or set) to "may not necessarily mean " specifically designed to" Instead, in some situations, the expression "configured to" may mean that the device can "do " with other devices or components. For example, a processor configured (or configured) to perform the phrases "A, B, and C" may be a processor dedicated to performing the operation (e.g., an embedded processor), or one or more software programs To a generic-purpose processor (e.g., a CPU or an application processor) that can perform the corresponding operations.

The terminology used herein is for the purpose of describing particular embodiments only and may not be intended to limit the scope of the other embodiments. The singular expressions may include plural expressions unless the context clearly dictates otherwise. All terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by one of ordinary skill in the art of the present disclosure. Commonly used predefined terms may be interpreted to have the same or similar meanings as the contextual meanings of the related art and are not to be construed as ideal or overly formal meanings unless explicitly defined herein . Optionally, terms defined herein may not be construed to exclude embodiments of the present disclosure.

1 is a diagram illustrating a configuration of a display device according to an embodiment of the present invention.

Referring to FIG. 1, a display device 100 includes a main body 101, and a driving body 201 that supports the main body 101 and rotates the main body 101. The main body 101 may include a display panel 102 and first speakers 109 and 111. The display panel 102 displays a screen, and may be a curved surface or a flat surface. The first speaker may comprise a right speaker 109 and a left speaker 111. The right speaker 109 and the left speaker 111 may be disposed at positions symmetrical with respect to the center of the display panel 102. In this case, . Since the right speaker 109 and the left speaker 111 are positioned at the lower end of the main body 101 and symmetrically disposed with respect to each other, the center of gravity of the main body 101 can be positioned at the lower end portion, Can be maintained.

The driving body 201 may include a driving unit 209 that supports the main body 101 and rotates the main body 101. In order to stably support the main body 101 having a predetermined weight, the driving body 201 should be formed to have a weight greater than the weight of the main body 101. For this, various components of the display device 100, which are relatively large in volume and weight, may be disposed inside the driving body 201. For example, a weight such as a power source device, a second speaker 203, a driving portion 209 (see FIG. 2A), and a metal frame (aluminum bar) may be disposed on the driving body 201.

The second speaker 203 may be a woofer speaker and is relatively heavy in weight as compared with the first speakers 109 and 111 and processes bass.

The driving body 201 can be formed in a substantially hexahedral shape and the heat generated inside the driving body 201 is transmitted to the side surface and the upper surface of the driving body 201 which can be observed with the naked eye of the user in consideration of aesthetics, It is preferable not to form the second speaker holes 231, 232 and 233 (refer to FIG. 11) for discharging sound outputted from the second speaker 203 and the heat dissipating hole 237 (see FIG. Therefore, the heat dissipating hole 237 and the second speaker holes 231, 232, and 233 can be formed on a lower surface of the driving body 201, for example, a part of the driving body 201, which is difficult to be visually observed by the user.

When the second speaker holes 231, 232 and 233 are formed on the lower surface of the driving body 201 as described above, the bass sound processed by the second speaker 203, which is a woofer speaker, Even if the sound is discharged through the speaker holes 231, 232, and 233, there is no inconvenience for the user to hear.

One of the first speakers 109 and 111 of the display device 100 may be disposed on the right and left sides of the lower end of the main body 101 and one of the second speakers 203 may be disposed on the drive body 201. [ For example, the display device can output 20W at the left speaker 111, 20W at the right speaker 109, and 30W at the woofer speaker 203. [

FIG. 2A is a front view of a display device according to an embodiment of the present invention, and FIG. 2B is a block diagram of a display device according to an embodiment of the present invention.

Referring to Figs. 2A and 2B, a main body 101 and a driving body 201 are shown. The main body 101 includes a signal processing unit 1005 for processing signals generated from outside or inside the display device 100 to output audio and video signals, first speakers 109 and 111 for outputting audio signals as a voice, And a controller 1003 for controlling the upper plate 301 of the driving body 201 to be separated from the driving body 201 and moving up and down when the main body 101 is powered on 1001).

The signal processing unit 1005, the display unit 1003, and the control unit 1001 may be configured as separate circuit boards or at least one circuit board. For example, the signal processing unit 1005 may be configured as a signal processing board. The display unit 1003 may include a display controller board and a display panel. The controller 1001 may be a controller board.

 The driving body 201 may be a hexahedron and may include an upper plate 301 which moves separately from the driving body 201 when an event occurs. The event may be generated by power on, off, or user input of the display device. A light emitting portion 303 may be mounted on the upper plate 301. The light emitting portion 303 can emit light when the top plate 301 moves. Also, the light emitting unit 303 may emit light while the display apparatus 100 is booting. Further, the light emitting portion 303 can emit light even when the main body 101 rotates. The light emitting unit 303 may emit light according to the audio outputs of the first and second speakers 109 and 111 and the second speaker 203. Specifically, the light emitting unit 303 may be turned on at predetermined time intervals during audio output, or the brightness may be adjusted corresponding to the intensity of the audio output.

A second speaker 203 may be disposed at the lower end of the driving body 201. The second speaker 203 can direct the diaphragm for generating sound to the floor and the sound can be discharged to the outside through the second speaker holes 231, 232 and 233 formed in the lower plate 230 of the driving body 201 have. The second speaker 203 may be a woofer speaker, and processes the low sound. For example, a woofer speaker can handle low frequencies below 250Hz.

The control unit 1001 can control the light emitting unit 303 to emit light based on the audio signal. The control unit 1001 sends a signal to the driving body 201 to turn the upper plate 301 of the driving body 201 up and down when the main body 101 is powered on, Can be controlled. That is, the control unit 1001 can control the driving unit 209 of the driving body 201 based on a user input for turning on the display device 100. For example, when the user turns on the main body 101 with the remote controller, the control unit 1001 can raise the top plate 301 of the driving body 201 and control the light emitting unit 303 to emit light. For example, the upper plate 301 can ascend approximately 11 mm from the upper end of the driving body 201, and the light emitting portion 303 coupled to the upper plate 301 can emit light while the upper plate 301 is lifted.

When the upper plate 301 and the main body 101 are coupled to each other, the main body 101 coupled with the upper plate 301 can be raised as the upper plate 301 is raised. In this case, the light emitting portion 303 coupled to the upper plate 301 can emit light while the main body 10 is lifted.

3A and 3B are top and side views of a display device.

Referring to FIG. 3A, the main body 101 may be rotated from left to right in a predetermined rotation angle range. In this case, the rotation angle range of the main body 101 may range from approximately -6 degrees to +6 degrees. Since the body 101 has a relatively long length (or a width in the lateral direction) as compared with the driving body 201, it can be shaken during rotation. That is, there may be a flow from side to side. In order to prevent such shaking, it is preferable that the driving body 201 has an appropriate size and an appropriate weight. The driving body 201 may use a separate weight to secure an appropriate weight. For example, a metal frame (aluminum bar) (not shown) may be attached to the driving body 201 to secure a necessary weight.

Referring to FIG. 3B, the driving body 201 may have a substantially cuboidal shape in order to stably support the main body 101. It is preferable that the height of the driving body 101 is a proper height not to be shaken when the main body 101 rotates left and right. The horizontal cross section of the driving body 201 is not limited to the rectangular cross section, but the horizontal cross section of the driving body 201 may be a polygonal shape such as a triangle or pentagon, a circular shape, or an elliptical shape.

4A is a front view of the display device with the display panel removed, and FIGS. 4B to 4G are views showing the rear surface of the display device.

Referring to FIG. 4A, the main body 101 includes first to third circuit boards 103, 105 and 107, first speakers 109 and 111, a support member 401, a shaft 501, a cable 505, . ≪ / RTI > The first to third circuit boards 103, 105, and 107 may be mounted on the rear chassis 101a. The rear chassis 101b is made of a metal and can support the display panel 102.

The circuit board 103 may include a signal processing unit 1005. The signal processing unit 1005 can output audio and video signals. The second circuit board 105 may include a controller 1001. The control unit 1001 can control the overall operation of the display device 100. [ The third circuit board 107 may be the display portion 1003. In addition, the third circuit board 107 can control the backlight of the display panel 102. The first to third circuit boards 103, 105, and 107 may be disposed substantially at a central portion of the main body 101 (specifically, a central portion of the rear chassis 101a). The arrangement of the first to third circuit boards 103, 105 and 107 in the main body 101 is such that the main body 101 is thin and wide so that the main body 101 can be moved And is an arrangement for minimizing the shaking of the main body 101. [

The first speakers 109 and 111 may be disposed at the lower left and right lower ends of the main body 101. A speaker disposed on the lower right side relative to the front surface of the main body 101 may be defined as a right speaker 109 and a speaker disposed on the lower left side as a left speaker 111. [ The left speaker 109 and the right speaker 111 may be disposed symmetrically with respect to the shaft 502 (or with respect to the center of the display panel 102).

The first speakers 109 and 111 are composed of a magnet and a metal material, and are relatively heavy components. Accordingly, the first speakers 109 and 111 may be disposed at the lower end of the main body 101. [ Since the first speakers 109 and 111 are disposed at the lower end of the main body 101, the center of gravity of the main body 101 is located at the lower end of the main body 101. [ Thus, the main body 101 can be minimized in shaking when it is rotated from side to side with respect to the driving body 201.

Referring to FIG. 4B, the first to third holes 121, 122 and 131 are formed in the rear cover B of the main body 101. The first hole 121 is formed in a substantially horizontal direction from the left end to the right end of the upper portion of the rear cover B. And the second hole 122 is disposed at a substantially upper center of the rear cover B. The third hole 131 is formed in a substantially horizontal direction from the left end to the right end of the lower portion of the rear cover B. The heat generated inside the main body 101 through the first to third holes 121, 122, and 131 can serve as a heat dissipating hole for discharging the heat to the outside of the main body. The third hole 131 also serves as a speaker hole for discharging sound output from the first speakers 109 and 111 to the outside of the main body 101.

4C and 4D are enlarged views of portions C and D shown in FIG. 4B, respectively, and FIG. 4E is a cross-sectional view taken along the line A-A 'shown in FIG. 4B.

Referring to FIG. 4C, the first hole 121 may include a plurality of holes 121. 4D, the plurality of holes 121 may be oriented in the vertical upward direction 125 by the step 127 formed on the rear cover B. Referring to FIG. 4D, May be formed of a plurality of holes (131). In this case, the plurality of holes 131 can be directed in the vertical downward direction 135 by the step 127a formed on the rear cover B as shown in FIG. 4E. Thus, the first and third holes 121 and 131 can be directed in opposite directions.

4F is an enlarged cross-sectional view of the main body 101 shown in FIG.

Referring to FIG. 4F, the first hole 121 and the second hole 124 formed in the rear cover B may have different directions. That is, the direction of the first hole 121 may be substantially perpendicular to the direction of the second hole 122.

FIG. 4G is an enlarged view of a portion D shown in FIG. 4B. Referring to FIG. 4G, the third hole 133 is formed at a position including a portion where the first speakers 109 and 111 are disposed, that is, below the rear cover B. Accordingly, the third hole 133 can discharge the sound output from the first speakers 109 and 111 to the outside of the main body 101.

5A and 5B are exploded perspective views showing a connection structure between the support member and the shaft, and FIG. 6B is an exploded perspective view showing the connection structure of the support member and the shaft of the display device 100. FIG. 7 is a view showing the inside of the driving body 201. FIG. 8 is a front view of the inside of the driving body 201, and FIG. 9 is a cross- And the inside thereof is shown in the rear view.

5 to 9, the driving unit 201 includes a power source unit 202, a second speaker 203, a first power source board 205, a second power source board 207, a top plate 301, The light emitting portion 303, the weight portions 371 and 372, the supporting member 401 and the shaft cover 302a, the rear plate 302b, the left plate 302c, the right plate 302d, the driving portion 209, 501).

Referring to FIG. 7, the power supply unit 202 and the second speaker 203 are disposed inside the driving body 201.

The power supply unit 202 can supply power to each electronic component of the display device 100. [ The power supply unit 202 can supply power to the main body 101 and the driving body 201. The power supply unit 202 can supply power to the main body 101 through a cable disposed inside the shaft cover 501. [

The power supply unit 202 may include a first power supply board 205 and a second power supply board 207. The first power source board 205 and the second power source board 207 may be located on the right and left sides of the second speaker 203, respectively.

The first power source board 205 may be disposed in parallel with the left side plate 302c or the right side plate 302d of the driving body 201. [ The second power supply board 207 may be disposed in parallel with the left side plate 302c or the right side plate 302d of the driving body 201. [ The second speaker 203 is a bass-only speaker which can be a woofer speaker and processes sounds of about 250 Hz or less. Since the woofer speaker is large in size and has no directionality, it can be disposed at the lower end portion of the driving body 201 because the wavelength is long and a lot of energy is required in the case of bass. Also, since the woofer speaker has a large weight, the woofer speaker can serve as a weight of the driving body 201. [ The wavelength of the low frequency generated by the woofer speaker can easily cause the heat generated from the first power source board 205 and the second power source board 207 located at the left and right sides of the woofer speaker to be discharged to the outside easily.

3A and 5, the driving body 201 may include an upper plate 301, a front plate 302a, a rear plate 302b, a left plate 302c, and a right plate 302d.

The upper plate 301 forms an upper portion of the driving body 201 and includes a front plate 302a, a rear plate 302b, a left plate 302c and a right plate 302d (see FIG. And can move up and down. The upper plate 301 can be raised to a predetermined height when the main body 101 is powered on.

No separate holes (for example, holes for fastening screws) are formed in the front plate 302a, the left plate 302c, and the right plate 302d, considering esthetics. It is therefore preferable that the front plate 302a, the left plate 302c and the right plate 302d are fastened to each other inside the plates 302a, 302c, and 302d through fastening screws. The rear plate 302b can be coupled to the driving body 201 through the permanent magnet. To this end, the rear plate 302b may be fixed to the left plate 302c and the right plate 302d using permanent magnets. Holes (not shown) through which an AC power cable (not shown) passes may be formed on the rear plate 302b.

5, the support member 401 is made of a metal and can be fastened and fixed to the rear chassis 101a (see FIG. 4A) of the main body 101 through a fastening screw (not shown). The rear chassis 101a is covered by the rear cover B and is not exposed to the outside of the body 101. [ Further, the supporting member 401 may be formed with a hole 403 through which a power source and a signal cable (not shown) pass.

6A and 6B, the support member 401 is fixedly coupled to the shaft 502 via the connecting member 404. The connection member 404 is formed with a hole 405 corresponding to the hole 403 of the support member 401. [

The shaft cover 501 may have a semicircular columnar shape. The shaft cover 501 penetrates the upper plate 301 and can guide the upper plate 301 to move up and down. The shaft cover 501 has a shaft 502 (see FIG. 13) disposed therein, and a through hole 503 at the front of which the connecting member 404 is engaged.

In this case, the width W2 of the through hole 503 is formed wider than the width W1 of the connecting member 404. This is to prevent the connecting member 404 from interfering with both ends of the through hole 503 of the shaft cover 501 when the shaft 502 rotates to the left and right (see Fig. 13). Referring to FIG. 6B, the connecting member 404 is formed with a gap of a predetermined length between both ends of the connecting member 404 and both ends of the through hole 503 when the connecting member 404 is engaged with the shaft 501. Therefore, the shaft 502 can rotate in the range of a predetermined angle? 1,? 2 (see FIG. 13) rightward and leftward from the inside of the shaft cover 501, 101 can be rotated left and right. Also, a power cable, an audio signal cable, and a data cable (not shown) may be disposed on the shaft cover 501.

Referring to FIGS. 7 and 8, the top plate 301 may be coupled to the light emitting portion 303. In this case, the light emitting portion 303 can emit light in conjunction with the lifting operation of the top plate 301. [ A driving unit 209 may be disposed below the upper plate 301. The second speaker 203 may be disposed under the driving unit 209. The first power source board 205 and the second power source board 207 may be disposed on both sides of the driving unit 209. Also, the first power source board 205 and the second power source board 207 may be disposed on both sides of the second speaker 203.

Referring to FIG. 9, the driving unit 209 may include a first actuator 211 and a second actuator 213. The first actuator 211 and the second actuator 213 may be a motor capable of forward / reverse rotation. The first actuator 211 may provide power for moving the upper plate 301 of the driving body 201 up and down while the second actuator 213 may provide power for rotating the body 101 to the left and right .

FIG. 10A is a perspective view of the upper plate and the light emitting portion, FIG. 9D is a side view of the upper plate, and FIG. Fig. 10E is an exploded view of the upper plate and the light emitting portion.

Referring to FIG. 10A, an upper cover 305 (see FIG. 10C) can be coupled to the upper surface of the upper plate 301. A permanent magnet 307 is mounted on the rear surface of the upper plate 301 and the upper plate cover can be fastened to the upper surface of the upper plate 301 using the permanent magnet 307 (see FIG. 10B).

Referring to FIG. 10B, a light emitting portion 303, a permanent magnet 307, and a hole 309 are disposed on the rear surface of the upper plate 301.

The light emitting portion 303 may include a light guide plate and a light source (not shown). Light emitted from the light emitting source can be evenly spread through the light guide plate. An LED may be used as a light emitting source. A small lamp or a fluorescent lamp may be used as the light emitting source.

The permanent magnet 307 can engage the upper plate cover of the upper plate 301 with the upper plate. Since the upper plate cover of the upper plate 301 is fastened to the upper plate by the permanent magnet 307, no separate fastening screw is required.

Referring to Fig. 10C, the top plate 301 is formed with a through hole 309 through which the shaft 502 (see Fig. 12) can pass. The upper plate cover 305 also has another through hole 310 having the same size as that of the through hole 309. The shaft 502 guides the top plate 301 and the top plate 301 can move along the shaft 502.

10D, the light emitting unit 303 may be fastened to the upper plate 301 with a fastening screw, and the light emitting unit may be positioned between the light emitting unit 303 and the upper plate 301.

Referring to FIG. 10E, the light emitting unit 303 may be fastened to the upper plate 301 through a fastening screw. The upper plate cover 305 can be fastened to the upper surface of the upper plate 301 by the permanent magnets 307. Since the upper plate 301 is coupled to the upper plate cover 305 using the permanent magnet 307 without using a separate fastening screw when the upper plate 301 is coupled to the upper plate cover 305, Is not formed.

11 is a view showing the lower plate and main parts of the driving body.

11, the lower plate 230 of the driving body 201 may include second speaker holes 231, 232 and 233, a heat dissipating hole 237 and legs 235a, 235b, 235c and 235d . The sound generated from the second speaker 203 through the second speaker holes 231, 232 and 233 can be emitted to the outside of the driving body 201. [ The second speaker 203 may be a bass-only speaker. In the case of bass sound, since there is no directionality, sound can be emitted to the outside through holes formed in the lower plate 230. Further, a separate heat discharging hole and sound discharging hole are not formed on the side surface of the driving body 201 considering the design.

Four legs 235a, 235b, 235c, and 235d may be formed on the lower plate 230 of the driving body 201. [ The four legs 235a, 235b, 235c and 235d may be integrally formed with the lower plate 230 by convexing a part of the lower plate 230 or may be formed by combining with the lower plate 230 using separate members . The anti-slip rubber R may be mounted on each of the four legs 235a, 235b, 235c, and 235d, and the anti-slip rubber R may be fixed so that the driving body 201 does not slip on the floor surface The four legs 235a, 235b, 235c, and 235d may form a space having a predetermined height between the bottom plate 230 and the bottom surface. The sound emitted from the second speaker 203 and the heat generated inside the driving body 201 can be discharged to the outside of the driving body 201 through the space between the bottom plate 230 and the bottom surface.

12 is a view showing the inside of the driving body.

12, the main body 101 of the display device 100 is coupled to a support member 401, and the support member 401 is rotatably supported by a shaft 502 (see Fig. 13) inside the shaft cover 501 And can be fastened using a fastening screw (not shown).

A cable (not shown) for supplying power from the drive body 201 to the main body 101 and a cable (not shown) for transmitting a signal from the main body 101 to the drive body 201 are disposed in the shaft cover 501 . These cables may be connected to the main body 101 through a hole 403 formed in the support member 401.

The weight bodies 371 and 372 may be aluminum bars. By adding the weight of the driving body 201, the driving body 201 can stably support the body 101. The weight bodies 371 and 372 may be disposed at the lower end of the driving body 201. The weight members 371 and 372 may be disposed on the left and right sides of the second speaker 203. The weight of the weight bodies 371 and 372 may be determined in consideration of the size and weight of the body 101. That is, it is preferable that the weight bodies 371 and 372 have a larger weight as the size and weight of the body 101 are larger.

Since the width of the main body 101 is larger than the width of the driving body 201 because the main body 101 has a relatively large size as compared with the driving body 201, The position of the shaft 502 can be changed. The reinforcing members 373 and 374 can prevent the shaft 501 from being deformed. The reinforcing members 373 and 374 may be disposed around the shaft 502. [ The reinforcing members 373 and 374 are preferably made of a metal material having a predetermined rigidity.

13 is a view showing in detail the periphery of the shaft 502 of the driving body.

Referring to FIG. 13, the shaft 502 is made of a metal and can rotate about a rotation axis. For example, the shaft 502 has a first angle? 1 (for example, +6 degrees) to a second angle? 2 (for example, -6 degrees) from a reference line L that is parallel to the X- Lt; / RTI >

The lifter 321 can be engaged with the top plate 301. Thus, the upper plate 301 is lifted and lowered as the lift 321 ascends and descends.

14 is a view showing a side surface of the lifter 321 and the first actuator 211 and FIG. 15 is a detailed view showing a connection structure between the lifter 321 and the first actuator 211. Referring to FIG. 14 , And the first actuator 211 may be a motor capable of forward / reverse rotation. Also, the first actuator 211 may be a solenoid. As the first actuator 211 is driven, the lifter 321 can be raised or lowered. The lifter stands 327 and 328 support the lifter 321. Four lifter stands 327 and 328 are provided, and when the lifter 321 is moved, the lifter 321 can be guided so as to move up and down without swaying left and right.

Referring to FIG. 15, the first actuator 211 may be a motor. In this case, a thread 323 may be formed on the rotation axis of the first actuator 211. The upper side of the pedestal 322 is coupled to the bottom of the lifter 321 and the lower side of the pedestal 322 can be formed with a female threaded portion (not shown) screwed to the thread 323 of the rotary shaft. In this case, the female thread portion may be a separate member and coupled to the pedestal 322.

Four guide bars 325 and 326 are present and pass through holes (not shown) formed in the pedestal 322 and guide the pedestal 322 when moving up and down the pedestal 322.

The pedestal 322 can be raised or lowered in accordance with the rotation direction of the rotary shaft by the rotation of the rotary shaft of the first actuator 211 and the pedestal 322 screwed to the rotary shaft through the female threaded portion. The upper plate 301 connected to the lifter 321 and the lift 321 can be raised or lowered together with the pedestal 322.

A pair of guide bars 325 and 326 pass through the four holes formed in the pedestal 322. The pedestal 322 can be raised or lowered uniformly without being inclined along the guide bars 325 and 326. [

Fig. 16 is a perspective view showing a structure for driving the shaft 502, and Fig. 17 is an enlarged view showing the vicinity of the worm gear 375. Fig.

Referring to FIG. 16, the reinforcing members 373 and 374 can be disposed on the left and right sides of the second actuator 213, and serve to support the shaft 502. The shaft 502 may be made of a metal material. A worm gear 375 can be coupled to the lower end of the shaft 502.

Referring to FIG. 17, a worm 376 may be coupled to or formed in the second actuator 213. As the worm 376 is gear-connected to the worm gear 375, the worm 376 rotates to rotate the worm gear 373 when the second actuator 213 is driven. One side of the worm gear 375 may be connected to the dummy gear 377. There may be two dummy gears 377. The worm gear 375 is connected to the two dummy gears 377 and the worm 376 so that the shaft 502 connected to the worm gear 375 can stably rotate without flowing left and right.

As described above, the shaft 502 can firmly support and rotate the main body 101 by the reinforcing members 373 and 374 disposed on the left and right sides of the second actuator 213.

The rotational force generated by the second actuator 213 is transmitted to the worm gear 375 through the worm 376 and the worm gear 375 rotates so that the shaft 502 can be rotated to the left or right within a predetermined angle range . The worm gear 375 is gear-connected to the worm 376 and is also gear-connected to the pair of dummy gears 377.

The pair of dummy gears 377 rotate together as the worm gear 375 rotates, but the rotational force of the dummy gear 377 is not transmitted to other gears or other members. Further, the dummy gear 377 supports the worm gear 375, so that the position of the shaft 502 is not changed. The second actuator may be a motor or solenoid capable of forward / reverse rotation.

Any one of the reinforcing members 373 and 374 may be disposed around the worm gear 375 and the shaft 502 to support the shaft 502 so that the position of the shaft 502 is not changed.

Meanwhile, the control unit 1001 can control the entire display device. The control unit 1001 controls the driving unit 209 of the driving unit 201 so that the main unit 101 can be raised when the power is turned on and the light emitting unit 303 is caused to emit light. The control unit 1001 transmits the first data for controlling the driving unit 209 and the second data for controlling the light emitting unit 303 to the driving unit 209 and the driving unit 209 of the driving unit 201, And can be transmitted to the light emitting unit 303.

The controller 1001 can emit light by driving the light emitting unit 303 when the power is turned on and can continuously emit light during the booting of the main body 101. [ In this case, the control unit 1001 can control the light emitting unit 303 to stop the light emission when the booting is completed. In addition, the control unit 1001 can control the light emitting unit so that the light emitting unit continues to emit light even after booting is completed.

The control unit 1001 can operate the second actuator 213 based on a user input for rotating the main body 101. [

The display unit 1003 may include a display panel, a display controller, and a backlight. The display unit 1003 receives a video signal and displays a screen on the display panel 102.

The signal processing unit 1005 outputs an audio signal and a video signal. The audio signal is output to the first speakers 109 and 111 and the second speaker 203 and the first speakers 109 and 111 and the second speaker 203 can generate sound. The second speaker 203 may be located in the driving body 201 to process the bass relatively as compared with the first speakers 109 and 111. The second speaker 203 is heavier than the first speakers 109 and 111.

The signal processing unit 1005 outputs an audio signal, and a part of the audio signal may be output to the second speaker 203. A cable for supplying an audio signal to the second speaker 203 may be disposed inside the shaft cover 501.

The control unit 1001, the signal processing unit 1005 and the first speakers 109 and 111 of the display device 100 are disposed in the main body 101 and include a relatively large driving unit 209, The power supply unit 202 and the second speaker 203 may be disposed on the driving body.

The main body 101 can be kept slimmer and lighter than the driving body 201 and the driving body 201 can secure a sufficient weight enough to support the main body 101, Lt; / RTI >

18 is a flowchart illustrating a process of lifting a top plate in a display device according to an embodiment of the present invention.

The display device starts booting when the main body is powered on (S1) (S2). The main body 101 can be powered on by the user. The user can turn on the main body 101 by operating a remote controller (not shown) or a power button (not shown) provided in the main body 101. [

The control unit 1001 turns on the power of the main body 101 based on a user input for turning on the power of the main body 101 (S1) and starts booting (S2). In this case, the user can turn on the main body 101 by operating a remote controller (not shown) or a power button (not shown) provided in the main body 101.

The control unit 1001 transmits the first data to the driving unit 209 included in the driving unit 201. When the driving unit 209 receives the first data, it drives the first actuator 211 and raises the top plate 301 of the driving unit 201 (S3).

Further, the control unit 1001 may transmit the second data to the light emitting unit 303. The light emitting unit 303 receives the second data and emits light (S4).

The control unit 1001 determines whether booting is completed (S5). When the booting of the control unit 1001 is completed, the control unit 1001 terminates, and if the booting is not completed, the light emitting unit 303 can be controlled to continuously emit light. In this case, the control unit 1001 may transmit the first data and the second data at the same time or sequentially.

Fig. 19 is a view showing a switch board 521 disposed around the shaft 502 and the shaft 502, and Fig. 20 is an enlarged view around the switch board 521. Fig.

19 and 20, the shaft 502 can rotate in the left-right direction 551 about the axis. At this time, the limit switch 523 can be mounted to prevent the shaft 502 from rotating infinitely.

The shaft cap 503 supports the shaft 502 and is fixed in position and does not change as the shaft 502 rotates. A switch board 521 may be coupled to one side of the shaft cap 503 by a screw 522. The switch board 521 may include a limit switch 523 and a proximity sensor (not shown).

The limit switch 523 may be coupled with a knob 523a. The knob 523a can pivot leftward and rightward by an external force about an axis. As the knob 523a pivots to the left or right, the limit switch 523 is operated and the shaft 502 stops rotating.

 A groove 526a is formed in the stepped portion 525 and the knob 523a of the limit switch 523 can be inserted into the groove 526a. The walls 526b and 526c may be formed on the left and right sides of the groove 526a. The stepped portion 525 rotates together with the rotation of the shaft 502 and the walls 526b and 526c on the left and right sides of the stepped portion 525 come into contact with the knob 523a as the stepped portion 525 rotates And the knob 523a is pivoted to the left or right.

The shaft cap 503 and the switch board 521 rotate as the shaft 502 rotates. The knob 523a is pivoted to the left or right by the left and right side walls 526b and 526c formed on the step portion 525 and can stop the rotation of the shaft 502. [

21 is a view showing the switch board 521. Fig.

Referring to FIG. 21, the switch board 521 may include a limit switch 523 and a proximity sensor 530. The limit switch 523 allows the shaft 502 to rotate only when the knob 523a is within a certain range and prevents the endless rotation of the shaft 502. [

The proximity sensor 530 outputs a value according to the distance the object approaches. For example, the proximity sensor 530 may output a first output value (e.g., 185) when the object is farthest away and a second output value (e.g., 2547) when the object is closest have.

Although proximity sensor 530 has been described for measuring distance in one embodiment of the present invention, proximity sensor 530 may be replaced by another sensor. For example, the proximity of an object may be determined using an optical sensor, an ultrasonic sensor, and an infrared sensor.

22 is a view showing the distance between the stepped portions 525 according to the position of the switch board 521. As shown in Fig.

A sensor unit, for example, a proximity sensor 530 may be disposed on the switch board 521. [ The sensor unit is installed on the switch board and can detect the gap with the structure around the switch board according to the rotation of the shaft.

The stepped portion 525 may include first and second planes 525a and 525b that are different in height from the proximity sensor 530. The distance 528 between the first plane 525a and the proximity sensor 530 is longer than the distance between the second plane 525b and the proximity sensor 530. [

The switch board 521 rotates as the shaft 502 rotates and the distance between the proximity sensor 530 included in the switch board 521 and the step portion 525 can be changed as the switch board 521 rotates So that the value outputted from the proximity sensor 530 may be different.

23 is a diagram showing values output from the proximity sensor 530 according to the rotation of the switch board 521. In Fig.

23, the state 502 in which the shaft 502 is rotated to the left limit point 2400, the state in which the shaft 502 is located at the center, and the state 2420 in which the shaft 502 is rotated to the right limit And the graph 2430 shows the respective output values 2431, 2433, 2435 of the proximity sensor 530 according to the positions 2400, 2410, 2420 of the shaft 502.

The shaft 502 can rotate from -A to + A degrees about the center 2410. For example, the shaft 502 may rotate from -8 degrees to +8 degrees about the center 2410.

When the shaft 502 is at the -8 degree position 2400, the proximity sensor 530 detects the first plane 252a, so that the distance of the stepped surface at the proximity sensor 530 becomes the maximum. At this time, the proximity sensor 530 may output a minimum value (for example, 185). As such, when the shaft 502 is at -8 degrees in the position 2400, the knob 523a can be pivoted to the right. The shaft 502 does not rotate any more as the knob 523a of the limit switch 523 is pivoted to the right.

When the shaft 502 rotates counterclockwise at the -8 degrees position 2400 and is in the center position 2410, the knob 523a may be in the intermediate position. In this case, the output value of the proximity sensor 530 may be 2547, for example. The knob 523a can be pivoted to the left when the shaft 502 at the center position 2410 continues to rotate counterclockwise and is at the +8 degrees position 2420. [ At this time, the proximity sensor 530 detects the second plane 252b, so that the distance between the proximity sensor 530 and the step surface is minimized, and the proximity sensor 530 outputs the maximum value (for example, 2547) can do. In this case, the shaft 502 does not rotate any more as the knob 523a of the limit switch 523 is pivoted to the left.

Fig. 24 is a flowchart showing a process in which the shaft 502 is set to the center position 2410. Fig.

The shaft 502 can be rotated by a remote controller (not shown) and can be rotated within a predetermined angle range by the limit switch 530. For example, the shaft 502 can rotate within a range of +8 degrees to -8 degrees with respect to the center. When the user rotates the shaft 502 with the remote controller and stops the rotation at the predetermined position and presses the reset button, the control unit 1001 receives the reset command (S2501) and returns the shaft 502 to the center position 2410 .

The control unit 1001 can determine the rotation direction of the shaft 502 based on the value output from the proximity sensor 530. [ Specifically, when the value output from the proximity sensor 530 is greater than a predetermined value, the control unit 1001 rotates the shaft 502 counterclockwise, and when the value output from the proximity sensor 530 is smaller than a predetermined value The shaft 502 is rotated clockwise. The control unit 1001 checks the output value of the proximity sensor 530 while rotating the shaft 502 clockwise or counterclockwise and controls the rotation of the shaft 502 when the value output from the proximity sensor 530 is changed And the center position 2410 can be determined. The process of driving the shaft 502 will be described below in order.

The control unit 1001 compares the output value output from the proximity sensor 530 with a preset value n (n is a natural number) after receiving the output value output from the proximity sensor 530 (S2502).

The control unit 1001 rotates the shaft 502 counterclockwise when the value output from the proximity sensor 530 is greater than n (S2504), and continuously outputs the output value of the proximity sensor 530 And compares it with a predetermined value n (S2505). The control unit 1001 continuously rotates the shaft 502 counterclockwise if the output value of the proximity sensor 530 is larger than n and rotates the shaft 502 when the output value of the proximity sensor 530 is smaller than n And determines the current position as the center position 2410 (S2508).

In step S2503, if the output value of the proximity sensor 530 is smaller than n, the control unit 1001 rotates the shaft clockwise (S2506). The control unit 1001 continuously receives the output value of the proximity sensor 530 while rotating the shaft 502 clockwise, and compares the output value with a predetermined value n (S2507). If the output value of the proximity sensor 530 is greater than n, the control unit 1001 stops the rotation of the shaft 502 and determines the current position as the center position 2410 (S2508).

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limiting the scope of the present invention as defined by the appended claims. Modifications and modifications are possible. In particular, the proximity sensor 530 used to determine the center position 2410 of the shaft 502 may be replaced by another sensor capable of measuring the distance. For example, the proximity sensor 530 may be replaced by an optical sensor, an ultrasonic sensor, or an infrared sensor.

Operations according to an embodiment of the present invention may be implemented by a single controller 1001. [ In this case, program instructions for performing various computer-implemented operations may be recorded on a computer-readable medium. The computer-determinable medium may include program instructions, data files, data structures, etc., alone or in combination. The program instructions may be those specially designed and constructed for the present invention or may be available to those skilled in the art. Examples of computer-readable media include magnetic media such as hard disks, floppy disks and magnetic tape, optical recording media such as CD-ROMs or DVDs, magneto-optical media such as floppy disks and ROMs, , Random access memory (RAM), flash memory, and the like. Examples of program instructions include machine language code such as those produced by a compiler, as well as high-level language code that can be executed by a computer using an interpreter or the like. When all or a part of the base station or relay described in the present invention is implemented as a computer program, the computer readable recording medium storing the computer program is also included in the present invention.

Therefore, the scope of the present invention should not be limited by the exemplary embodiments described, but should be determined by the equivalents of the claims, as well as the claims.

101: main body 102: display panel
109, 111: first speaker 201:
202: power supply unit 203: second speaker
209: driving part 301: top plate
303: light emitting portion 401: support member
501: shaft cover 502: shaft
1001: Control section 1003:
1005: Signal processor

Claims (20)

A main body including a signal processing unit for outputting audio and video signals, a display unit for displaying the video signal, and a control unit;
A driving body electrically connected to the main body and supporting the main body while rotating the main body in a lateral direction; And
And an upper plate which forms an upper surface of the driving body and which is lifted or lowered according to the occurrence of an event. The method according to claim 1,
Wherein the event is generated by power on, off, or user input of the display device. The method according to claim 1,
Wherein the driving body comprises:
Wherein when the upper plate moves up and down, light is emitted in a gap between the upper end of the driving body and the upper plate. The method according to claim 1,
Wherein the driving body comprises:
A support member connected to a rear surface of the main body;
A shaft for rotating the main body in the left and right direction; And
A shaft cover covering the shaft to guide the lifting and lowering of the upper plate;
A connecting member interconnecting the shaft and the support member; And a display device. 5. The method of claim 4,
Wherein the driving body comprises:
A second speaker for outputting an audio signal output from the main body; And
And a power supply unit for supplying power to the body and the driving body. 6. The method of claim 5,
Wherein the driving body includes a lower plate,
Wherein at least one hole for discharging the sound output from the second speaker to the outside of the driving body is formed on the lower plate. The method according to claim 1,
And the upper plate includes a light emitting portion coupled along a bottom edge of the upper plate
Wherein the control unit controls the light emitting unit to emit light when the upper plate is moved. The driving apparatus according to claim 1,
And a weight for moving the center of gravity of the driving body,
And the weight is disposed at a lower end of the driving body. 5. The method of claim 4,
The driving body further includes a driving unit,
The driving unit includes: a first actuator for moving the upper plate; And
And a second actuator for rotating the shaft. 5. The method of claim 4,
Wherein one side of the shaft is coupled with a worm gear, and the worm gear is coupled with a dummy gear that supports the shaft. 11. The method of claim 10,
And a reinforcing member for supporting the shaft is disposed around the second actuator and the shaft. 6. The method of claim 5,
And the diaphragm of the second speaker is disposed to face the lower plate of the driving body. The method according to claim 1,
The main body includes a rear cover covering the rear chassis at the rear,
Wherein the rear cover has first to third holes for emitting heat generated inside the main body to the outside of the main body. 14. The method of claim 13,
Wherein the first and third holes are formed in the upper and lower portions of the rear cover along the width direction of the rear cover and are formed to face different directions. 5. The method of claim 4,
And a sensor unit disposed around the shaft for sensing rotation of the shaft. 16. The method of claim 15,
The sensor unit includes:
A switch board fixed to one side of the shaft; And
And a first sensor installed on the switch board and detecting an interval between the switch board and a structure around the rotation of the shaft. 16. The method of claim 15,
Wherein the sensor unit further comprises a second sensor installed on the switch board and defining a maximum angle of rotation of the shaft in the left and right directions. 18. The method of claim 17,
Wherein the second sensor is a limit switch that operates while partially interfering with a structure around the switch board in accordance with a rotation operation of the shaft. A body having a display panel;
A driving body electrically connected to the main body and supporting the main body while rotating the main body in a lateral direction; And
And an upper plate which constitutes an upper surface of the driving body and is separated from the driving body so as to be lifted or lowered. A main body including a signal processing unit, a first speaker, a display unit, and a control unit;
A second speaker for outputting an audio signal output from the signal processing unit, and a second speaker for outputting an audio signal based on the signal output from the control unit, A driving body including a light emitting portion for emitting light; And
And an upper plate which constitutes an upper surface of the driving body and which is separated from the driving body and is lifted or lowered,
Wherein the light emitting unit emits light when the upper plate is lifted.

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