KR102032089B1 - Bed added Multi channel Surround Sound System - Google Patents

Abstract

According to the present invention, a bed equipped with a stereophonic sound system includes a body part and a head part. The body part comprises guide rails extended along left and right sides in a longitudinal direction, and the head part includes a fixed part and a moving part which are combined separably. The fixed part includes: a fixed body including an n-shaped docking groove formed between an outer frame having a width wider than the width of the body part and an inner frame having the same width as the width of the body part to enable the moving part to be separably inserted; a first connector; a plurality of first speakers; and a fixed control part receiving stereophonic sound audio data through first near field communication, and operating the first speakers through some corresponding stereophonic sound audio signals among the received stereophonic sound audio data. The moving part includes: a moving body having an n-shaped table shape comprising a pair of vertical lateral plates supporting a horizontal upper plate from both sides and inserted into the docking groove, and including moving wheels installed in the bottom of the vertical lateral plates and a guide roller able to be slid along the guide rails corresponding to each of the vertical lateral plates; a second connector; a plurality of front speakers; a rechargeable battery; and a moving control part receiving the stereophonic sound audio data through second near field communication, and operating and controlling the second speakers through the other stereophonic sound audio signals among the received stereophonic sound audio data. Therefore, the bed equipped with a stereophonic sound system is capable of enabling a user to enjoy a spatially optimal stereophonic sound by freely moving speakers.

Description

Bed with Stereo Sound System {Bed added Multi channel Surround Sound System}

The present invention relates to a bed to which a stereo sound system is added, and more particularly, to a bed to which a stereo sound system is added to enable a user to enjoy stereo sound in a bed environment.

With the introduction of residential life, the home environment has become a bed environment in most homes. In particular, bed life, which stays almost 12 hours out of 24 hours from evening to the next morning, is the center of healthy life. In particular, the bed should be created as a resting place for the tired body during the day as a psychologically stable and comfortable place. Enjoying a pleasant music environment is most desirable for creating a comfortable and stable environment.

Therefore, in general, the living room is equipped with a three-dimensional sound system, but the room with the bed is not provided with a true three-dimensional sound environment. As the main room is mainly furnished with furniture such as a bed, a dressing table and a wardrobe, it is difficult to arrange a separate stereophonic sound system, and it is difficult to have a stereoacoustic environment made by other furniture that occupies the space.

Therefore, there have been technological developments to add the acoustic system of the room to the bed. However, the acoustic system added to the conventional bed is merely a planar arrangement in which the speaker is mounted on the head or the headboard, and thus the three-dimensional spatial stereo sound cannot be enjoyed.

Patent Publication No. 10-2018-0046316 Patent Publication No. 10-2017-0078286 Patent Publication No. 10-2017-0061792 Patent Publication No. 10-2017-0060728 Patent Publication No. 10-2016-0149007 Patent Publication No. 10-2009-0117044

In order to solve the problems of the prior art, a plurality of speakers are generally disposed in the head portion in a flat surface, but in order to enjoy a three-dimensional effect, some of the plurality of speakers are separated from the head portion along the bed body portion. It is to provide a bed with a three-dimensional sound system that can be moved in the longitudinal direction of the bed to enjoy the three-dimensional stereo sound due to the spatial arrangement of the speakers.

Another object of the present invention is to provide a bed with a stereophonic sound system that can be connected to the stereophonic sound system attached to the bed and a mobile communication device such as a mobile phone.

Still another object of the present invention is to provide a bed with a three-dimensional sound system that can minimize the effect on the bed activity space while enjoying the three-dimensional sound.

Still another object of the present invention is to provide a bed to which a stereo sound system is added which can increase the usability of electronic devices such as mobile phones, tablets, and notebooks.

The bed to which the stereophonic sound system of the present invention is added to achieve the above objects has a body portion and a head portion. The body portion has guide rails extending in the longitudinal direction on each of the left and right side surfaces, and the head portion includes a fixing portion and a moving portion that are detachably coupled to each other.

The fixed part has a fixed body having an n-shaped docking groove in which a moving part is detachably inserted between an outer frame having a width larger than the width of the body portion and an inner frame having a width equal to the width of the body portion, and inside the docking groove of the fixed body. A first connector for contacting and supplying power when the moving part is docked, a plurality of first speakers installed in the inner frame, and installed in the inner frame to control supply of charging power to the first connector, and And a fixed control unit configured to receive stereoscopic audio data through the one short-range wireless communication unit, and to drive the plurality of first speakers by some stereoscopic audio signals corresponding to the stereoscopic audio data.

The moving part is composed of a pair of vertical side plates which support the horizontal top plate on both sides and is n-shaped table shape inserted into the docking groove, and a moving wheel is installed at the bottom of the pair of vertical side plates, and each of the pair of vertical side plates A movable body provided with a guide roller slidably along a guide rail corresponding to the second body, a second connector installed on the movable body and connected to the first connector when docked, a plurality of second speakers installed on the movable body, and a movable body And a rechargeable battery that is installed at the second battery and is charged with power through a second connector, and is installed in the mobile body, receives power from the rechargeable battery, and receives stereoscopic audio data through the second short-range wireless communication unit. Movement to drive-control a plurality of second speakers by the corresponding remaining partial stereophonic audio signal of the stereophonic audio data A control unit is provided.

Therefore, the bed to which the stereophonic system of the present invention is added outputs a plurality of stereophonic audio signals corresponding to the plurality of first speakers at a fixed position behind the listener located on the body portion, and the plurality of second speakers are arranged in front of the listener. And outputs the remaining partial stereophonic audio signal corresponding to the moving position of.

Therefore, in the present invention, since the second speakers can be moved to an appropriate position along the longitudinal direction of the bed, the user can enjoy the optimal stereoscopic sound on the bed.

In the present invention, the plurality of first speakers includes a pair of left and right surround speakers and a woofer speaker, and the woofer speaker is disposed between the pair of surround speakers, and the audio output output from the woofer speaker is transferred to the internal space of the body part. It is preferable that a through hole communicating with a position where the fixed portion and the body portion are interviewed is formed to be output. Therefore, the user can feel the vibration of the low frequency caused by the woofer speaker on the bed.

In the present invention, the plurality of second speakers includes a pair of left and right channel speakers and a center speaker, and each of the plurality of second speakers is installed to be rotatable by an electric motor, and each of the electric motors has a length of a body part. It is preferable that the movement direction be controlled by the movement control unit so that the center direction of the audio output is always directed to the ear of the listener at any movement position moved along the direction. Therefore, the user can always enjoy the optimum stereophonic sound even when located at any moving position of the second speakers.

In the present invention, a support pin may be installed between the pair of vertical side plates to support a detachable table at a position lower than the horizontal top plate and higher than an upper surface of the body portion. Therefore, the user can easily use the table on the bed.

In the present invention, at least one side of the fixed body and the mobile body may additionally be provided with at least one of lighting, mobile phone connection jack, and USB connection jack.

As described above, the bed to which the stereophonic sound system of the present invention is added may have a head part separated into a fixing part and a moving part, and thus the position of the front speakers can be freely positioned at any position on the bed, thereby allowing for optimal spatial dimension. Enjoy stereoscopic sound.

In addition, in the present invention, the audio output output from the woofers speaker is supplied to the inner space of the body portion can feel the vibration of the low frequency on the mattress of the bed.

In addition, the present invention may additionally provide convenience such as using a table or charging a mobile phone on a bed.

However, the effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned above may be clearly understood by those skilled in the art without departing from the spirit and scope of the present invention.

1 is a front view of a preferred embodiment of a bed to which a stereophonic system according to the present invention is added.
2 is a side view of FIG. 1;
3 is a front view of a preferred embodiment of the head portion as seen from the bed body portion;
4 is a design of a preferred embodiment of the fixing part of FIG.
5 is a schematic view of a preferred embodiment of the moving unit of FIG.
Figure 6 is a block diagram of a preferred embodiment of the bed with a stereophonic sound system according to the present invention.
7 to 9 are screen state diagrams of a mobile phone for explaining the control operation of the bed to which the stereo sound system of the present invention is added.

With respect to the embodiments of the present invention disclosed in the text, specific structural to functional descriptions are merely illustrated for the purpose of describing embodiments of the present invention, embodiments of the present invention may be implemented in various forms and It should not be construed as limited to the embodiments described in.

As the present invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in the text. However, this is not intended to limit the present invention to the specific form disclosed, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. In describing the drawings, similar reference numerals are used for the components.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof that has been described, and that one or more of them is present. It is to be understood that it does not exclude in advance the possibility of the presence or addition of other features or numbers, steps, actions, components, parts or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

Hereinafter, with reference to the accompanying drawings, it will be described a preferred embodiment of the present invention. The same reference numerals are used for the same elements in the drawings, and duplicate descriptions of the same elements are omitted.

1 is a front view of a preferred embodiment of a bed to which a stereophonic system according to the present invention is added, FIG. 2 is a side view of FIG. 1, FIG. 3 is a front view of a preferred embodiment of a head unit viewed from the bed body portion, and FIG. 3 is a schematic view of a preferred embodiment of the fixing part of FIG. 3, and FIG. 5 is a schematic view of a preferred embodiment of the moving part of FIG. 3.

1 to 3, the bed 10 to which the stereo sound system is added according to the present invention includes a body part 12 and a head part 14. The head part 30 largely includes a fixing part 100 and a moving part 200. Operation Description For convenience, the moving unit 200 is illustrated as being in three positions at the same time.

A position: the position where the moving part is docked to the fixed part,

B position: Position showing the state of joining the table in the middle position of the body part

C position: Moved to the end of the body

The body portion 12 has a rectangular box shape, and the mattress 16 is placed on the upper surface thereof, and guide rails 18 and 20 extending in the longitudinal direction are respectively installed at upper end portions of both side walls of the body portion 12. The lower one side of the body portion 12 is provided with three drawers 22 which can slide in the lateral direction, the lower side is provided with a ringing cylinder 24. The ringing cylinder 24 is in communication with the lower space of the fixing part 100 through the through hole 26 formed in the upper wall of the body portion 12.

The front lower part of the fixing part 100 is fixed by being interviewed with the upper wall of the body part 12. The fixing part 100 constitutes an upright box-shaped wall whose height is relatively higher than the depth as shown in FIG. 4. The fixing part 100 largely includes an outer frame 100A and an inner frame 100B, and forms an n-shaped docking groove 102 between the outer frame 100A and the inner frame 100B. The width of the outer frame 100A is larger than the width of the body portion and the inner frame 100B has a size equal to or smaller than the width of the body portion.

The outer frame 100A is constituted by the vertical side plates 104 and 106, the horizontal top plate 108 and the vertical back plate 110 to form the n-shaped docking groove 102, and the inner frame 100B is formed by the horizontal middle plate ( 112, vertical side plates 114, 116, horizontal bottom plate 118, and vertical front plate 120. The installation height of the horizontal top plate 108 is installed at a position higher than the height at which the body portion 12, the mattress 16, and the pillows are stacked.

Through-holes 122 and 124 for the surround speaker are formed near the upper left and right upper sides of the vertical front plate 120, and through-holes 126 for the woofer are formed near the lower center. The woofer through hole 126 is in communication with the through hole 26 of the body portion 12, the voice output from the woofer speaker is transmitted to the inside of the ring through the through hole (126, 26).

 A socket connector 128 is installed at the center of the vertical backplate 110 between the horizontal top plate 108 and the horizontal middle plate 112, and a cable cover 130 extending up and down along a center line is installed. The inner space of the inner frame corresponds to the through-holes 122 and 124 for the surround speaker and the through-hole 126 for the woofer, respectively, so that the R surround speaker 132, the L surround speaker 134, the woofer speaker 136, and the circuit board 138 are provided. This is installed.

As shown in FIG. 5, the moving part 200 is inserted into the n-shaped docking groove 102 of the fixing part 100 in an n-shaped table shape and docked with the fixing part 100. The moving part 200 is composed of vertical side plates 202 and 204, a horizontal top plate 206, and a reinforcing front plate 208. Each of the vertical side plates 202 and 204 has a structure in which a lower end corresponding to the height of the body part 12 protrudes in the front direction than the upper end, and guide rollers 210 and 212 are formed at the upper end of the protruding part, respectively, and the bottom bottom of the lower end part. Moving wheels 214 and 216 are respectively installed in the center, and insertion grooves 218 and 220 are formed in the middle rear edge of the upper end, respectively, and support pins 222 in an intermediate position higher than the insertion grooves 218 and 220, respectively. 224, 226 and 228 are respectively installed. Each of the guides 210 and 212 is coupled to the guide rails 18 and 20 of the body part 12 and moved in the longitudinal direction. Corresponding opposite edge portions of the horizontal middle plate 112 of the fixing part 100 are inserted into the insertion grooves 218 and 220, respectively. The table plate 230 is fitted between the support pins 222 and 224 and 226 and 228. When docked, the table plate 230 will be separated and stored in a separate space.

The top surface of the horizontal top plate 206 of the moving part 200 has a height of a proximal position facing the bottom of the horizontal top plate 108 of the fixing part 100. An R channel speaker 232, an L channel speaker 234, a center speaker 236, a moving circuit board 238, an illumination 240, and the like are coupled to a bottom surface of the horizontal upper plate 206. A recess 242 is formed in the center of the rear edge of the moving part circuit board 238 and has a depth in which the cable cover 130 of the fixing part 100 is recessed. The plug connector 244 is installed at the edge of the circuit board 238 facing the socket connector 128 installed in the cable cover 130 inserted into the groove 242. When docked, the plug connector 244 is inserted into the socket connector 128 and electrically connected thereto. The plug connector 244 may be composed of, for example, pogo pins.

Therefore, as shown in FIGS. 1 and 2, the moving part 200 is normally positioned at a docking position and an A position when docked in the n-shaped docking groove 102 of the fixing part 100. As shown in FIG. 3, in the A position, the left and right surround speakers 132 and 134 and the woofer speaker 136 are located at the rear centering on the head of the listener lying in the bed, and the left and right channel speakers 232 and 234 in the front. ) And center speaker 236 are positioned so that all speakers are placed on a virtual vertical plane above the head.

When the moving part 200 moves in the longitudinal direction of the body part and is positioned at the B position, the left and right surround speakers 132 and 134 and the right speaker 136 are in the same fixed position as the A position, but the left and right channel speakers 232 , 234 and the center speaker 236 are arranged at an intermediate position of the body portion 12. Therefore, the left and right surround speakers 132 and 134 and the woofer speakers 136 are located above the head, but the left and right channel speakers 232 and 234 and the center speaker 236 are disposed below the head, the chest or the belly. .

When the moving part 200 moves further in the longitudinal direction of the body part and is positioned at the end C position, the left and right surround speakers 132 and 134 and the right speaker 136 are present in the same fixed position as the A position, but the left and right channels are The speakers 232 and 234 and the center speaker 236 are arranged at the end position of the body portion 12. Therefore, the left and right surround speakers 132 and 134 and the right speaker 136 are located above the head, but the left and right channel speakers 232 and 234 and the center speaker 236 are disposed in the foot position, which is lower than the head.

Therefore, in the C position, whether the user is lying in bed, leaning against the head, or sitting in the middle of the bed at any position on the bed, the user can enjoy stereo sound with the optimal speaker layout of 5.1 channel stereo sound. .

Figure 6 shows a block diagram of a preferred embodiment of the bed to which the stereophonic system according to the present invention is added.

Referring to FIG. 6, the fixed circuit unit 150 mounted on the circuit board 138 of the fixed unit 100 may include a short range wireless communication unit 152, a power supply unit 154, a fixed control unit 156, and a first audio output unit ( 158, a second audio output unit 160, a third audio output unit 162, a socket connector 128, and a USB / mobile phone jack connector 164. The mobile circuit unit 250 mounted on the circuit board 238 of the mobile unit 200 includes an R channel output unit 252, an L channel output unit 254, a center output unit 256, and an R channel electric motor 258. , L-channel electric motor 260, center electric motor 262, plug connector 244, rechargeable battery 264, movement control unit 266, short-range wireless communication unit 268, distance measuring unit 270, lighting unit ( 272), USB / cell phone jack connectors 274.

The power supply unit 154 converts alternating current into direct current to generate operating power and supplies the generated operating power to each circuit unit, the socket connector 128 and the USB / mobile phone jack connector 274.

The fixed controller 156 receives audio data and command data from the user mobile phone 300 through, for example, a short range wireless communication unit 152 composed of a Bluetooth communication module. The fixed controller 156 controls the output of the first to third audio output units 158, 160, and 162 in response to the received audio data and command data. The first audio output unit 158 drives the R surround speaker 132, the second audio output unit 160 drives the L surround speaker 134, and the third audio output unit 162 is the woofer speaker ( 136). Accordingly, the fixed controller 156 controls stereoscopic sounds such as volume control, equalization, and mixing of the R surround speaker 132, the L surround speaker 134, and the woofer speaker 136 in response to the command data transmitted from the mobile phone 300. Perform the function.

The mobile circuit unit 250 receives the operating power through the plug connector 244 electrically connected to the socket connector 128 when the mobile unit 200 is docked to the fixing unit 100 to charge the rechargeable battery 264. To control. Each circuit unit of the mobile circuit unit 250 receives operation power from the rechargeable battery 264.

The movement controller 266 receives audio data and command data from the user cellular phone 300 through, for example, a short range wireless communication unit 268 configured as a Bluetooth communication module. The movement controller 266 controls the output of the R channel output unit 252, the L channel output unit 254, and the center output unit 256 in response to the received audio data and command data. Accordingly, the movement controller 266 controls stereoscopic sounds such as volume control, equalization, and mixing of the R-channel speaker 232, the L-channel speaker 234, and the center speaker 236 in response to the command data transmitted from the mobile phone 300. Perform the function.

The R channel electric motor 258 adjusts the tilting angle of the R channel speaker, the L channel electric motor 260 adjusts the tilting angle of the L channel speaker, and the center electric motor 262 adjusts the tilting angle of the center speaker. . The tilt angle is adjusted so that the direction of the center of the speaker always faces the pillow. Therefore, the movement control unit 266 measures the distance between the fixed unit 100 and the moving unit 200 through the distance measuring unit 270, and in response to the measured distance, the R channel electric motor 258 and the L channel electric motor. The motor 260 and the center electric motor 262 are controlled to automatically control the tilting angle of these speakers. That is, as shown in Figs. 1 and 2, in the A position, that is, the docking position, the tilting position is -60 degrees from the vertical position, the tilting position is +60 degrees from the vertical position in the B position, and the vertical position + Tilt to the 80 degree position. Therefore, the tilting angle range is automatically controlled in the direction that the speaker's centering direction always faces the pillow within the range of -60 to +80 degrees. By the automatic tilting control of the speaker as described above, the user can always enjoy the 3D sound under optimum conditions regardless of the moving position of the moving part. The tilting angle range as an example here is intended to describe a preferred embodiment, but is not limited thereto.

In addition, the movement control unit 266 controls the brightness, color, and automatic on / off of the lighting unit 272 including, for example, an LED in response to the received illumination command data.

In addition, the movement controller 266 may output music set in response to the alarm time or control the on / off of lighting in response to the received alarm command data.

Therefore, if you set the bedtime music to help sleep at about 10 to 30 minutes at bedtime or the weather music to help the weather at waking, it is possible to provide more effective sound through the three-dimensional sound system.

7 to 9 illustrate screen state diagrams of a mobile phone for explaining a control operation of a bed to which a stereo sound system according to the present invention is added.

Referring to the drawing, a user downloads a bed app through an internet connection and installs it on his mobile phone. Subsequently, when the bed app is set, the icon 302 of the bed app is displayed on the initial mobile phone initial menu screen as shown in FIG. 7. Next, when the icon 302 is touched, an initial screen of the bed app of FIG. 8 is displayed. Touching the initial screen displays the usage menu of the 3D sound system as shown in FIG. The main menu includes music search, sound setting, tilting setting, lighting setting and alarm setting.

Touching the music search menu will take you to a music table stored in your phone or a music service site via the Internet, allowing you to download or play your favorite music in real time.

The mobile phone transmits audio data of the selected stereophonic music. The fixed unit 100 separates the R surround audio data, the L surround audio data, and the woofer data among the received audio data and outputs them through the R surround speaker, the L surround speaker, and the woofer speaker.

As described above, the present invention has been described with reference to a preferred embodiment of the present invention, but those skilled in the art may vary the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. It will be understood that modifications and changes can be made.

For example, in the above-described embodiment, 5.1 channel stereo sound has been described, but multi-channel expansion such as 2 channels, 4 channels, and 7,1 channels is possible.

10: bed with stereo sound system
12: body part
14 head
16: mattress
18: guide rail
100: fixed part
100A: Outer
100B: Natl
102: n-shaped docking groove
128: first connector
132, 134, 136: first speakers
200: moving part
210, 212: guide roller
214, 216: wheels
232, 234, 236: second speakers
244: second connector

Claims (5)

In a bed having a body portion 12 and a head portion 14,
The body portion 12 has guide rails 18 extending in the longitudinal direction on each of the left and right sides thereof, and the head portion 14 is fixed to the movable part 100 and the moving part 200 are separated from each other. Including,
The fixing part 100 is
The movable part 200 can be separated between the outer frame 100A having a width larger than the width of the body portion 12 and the inner frame 100B having the same width as the width of the body portion 12. A fixed body having an n-type docking groove 102 inserted therein;
A first connector 128 installed in the docking groove 102 of the stationary body and contacted when the moving unit 200 is docked to supply power;
A plurality of first speakers (132, 134, 136) installed in the inner frame (100B); And
It is installed in the inner frame (100B), and controls the supply of the charging power to the first connector 128, receives stereophonic audio data through the first short-range wireless communication unit 152, received stereophonic audio data A fixed control unit 156 for driving the plurality of first speakers 132, 134, and 136 by a corresponding stereoscopic audio signal,
The moving unit 200
It is composed of a pair of vertical side plates 202 and 204 supporting the horizontal top plate 206 on both sides, and is an n-shaped table shape inserted into the docking groove 102, and the pair of vertical side plates 202 and 204. The movable wheels 214 and 216 are installed at the bottom, and the guide rollers 210 and 212 are installed to be slidable along the guide rails 18 corresponding to the pair of vertical side plates 202 and 204, respectively. main body;
A second connector 244 installed on the movable body and connected to the first connector 128 when docked;
A plurality of second speakers (232, 234, 236) installed in the movable body;
A rechargeable battery 264 installed in the movable main body and charged with power through the second connector 244; And
Installed in the mobile main body, supplied with power from the rechargeable battery 264, receives the stereophonic audio data through a second short-range wireless communication unit 268, and the corresponding partial stereoscopic sound among the received stereophonic audio data. A movement control unit 266 for driving control of the plurality of second speakers 232, 234, 236 by an acoustic audio signal;
The plurality of first speakers 132, 134, and 136 output a corresponding stereophonic audio signal at a fixed position behind the listener located on the body part 12, and the plurality of second speakers 232. , 234, 236 is a bed with a stereophonic sound system for outputting a corresponding remaining stereophonic audio signal at any movement position in front of the listener. The speaker of claim 1, wherein the plurality of first speakers 132, 134, and 136 include a pair of left and right surround speakers and a woofer speaker, and the woofer speaker is disposed between the pair of surround speakers. And a through hole 26 communicating with a position where the fixing part 100 and the body part 12 are interviewed so that the audio output from the woofer speaker is output to the internal space of the body part 12. Bed with system attached. The plurality of second speakers 232, 234, and 236 include a pair of left and right channel speakers and a center speaker, each of the plurality of second speakers being an electric motor 258, 260. 262 is rotatably installed, and each of the electric motors 258, 260, and 262 is always moved in the center direction of the audio output at any movement position moved along the longitudinal direction of the body part 12. Bed equipped with a three-dimensional sound system that is rotationally controlled by the movement control unit (266) to direct the ears of the listener. 2. The table 230 according to claim 1, wherein the pair of vertical side plates 202, 204 support the detachable table 230 at a position lower than the horizontal top plate 206 and higher than the top surface of the body part 12. Bed with stereo sound system with support pins (222, 224) (226, 228) installed. The bed of claim 1, wherein at least one side of the fixed body and the mobile bodies is provided with a stereo sound system in which at least one of lighting, a mobile phone connection jack, and a USB connection jack is installed.

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