JP2003032781A - Portable sound station - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable sound station which is so thin that the portable sound station does not take up much space when placed in a bag or the like, easy to carry, and so versatile that the portable sound station can be used in a large variety of manners. SOLUTION: The portable sound station is constituted of a flat main body portion 12 with built-in power switch 20, volume control 24, power amplifier, input terminal, battery, and the like; and a first flat speaker 14 and a second flat speaker 16 which incorporate a flat speaker unit and are coupled with the main body portion 12 through a pipe 48. The first speaker 14 and the second speaker 16 are supported on the pipe 48 so that the speakers can be rotated against the main body portion 12 and moved close to and away from the main body portion 12. When the first speaker 14 and the second speaker 16 are moved and brought into contact with both the sides of the main body portion 12, the speakers and the main body portion form a single plate. In this state, the portable sound station is so thin that the portable sound station does not take up much space when placed in a bag or the like and is easy to carry. In addition, since the fist speaker 14 and the second speaker 16 as coupled with the main body portion 12 can be moved, the portable sound station can be used in a large variety of manners.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable sound station, which is equipped with a stereo speaker, an amplifier, and a power source, and which can be connected to a music player or the like, is thin, and is convenient to carry.

[0002]

2. Description of the Related Art Conventionally, various compact stereo speakers with a built-in amplifier that can be connected to a CD player, a cassette player, etc. have been proposed.

[0003]

However, the conventional stereo speaker with a built-in amplifier has a box shape, and even though it is small and lightweight, it is thick, so that it is bulky even if it is put in a bag or the like, and it is portable. Had a problem.

Further, since the stereo speaker with built-in amplifier is provided with two independent speaker boxes, it is difficult to carry the speaker alone.

Further, there is a case where a stereo speaker with a built-in amplifier is arranged near a notebook computer for use.
The thin notebook computer and the box-shaped stereo speaker with built-in amplifier did not seem to be unified in appearance.

[0006] It is an object of the present invention to provide a portable sound station which is thin, is not bulky even if it is put in a bag or the like, is easy to carry, and has a wide variety of uses.

[0007]

A portable sound station according to a first aspect of the present invention includes a flat plate-shaped main body portion, flat plate-shaped speaker portions provided on both sides of the main body in the width direction and having speaker units built therein, and a signal. A signal input section for inputting a signal, an amplifier provided in at least one of the main body section and the speaker section, and driving the speaker unit based on a signal input from the signal input section, the main body section and the speaker section. A power source unit for driving the amplifier, and a connecting unit for connecting the main body unit and the speaker unit to each other, wherein the connecting unit connects the speaker unit to the main body unit. The feature is that the relative position is supported so that it can be changed in a connected state.

Next, the operation of the portable sound station according to claim 1 will be described.

In the portable sound station according to the first aspect, a device for outputting a signal, such as a CD player or a notebook personal computer, is connected to the signal input section for use.

The amplifier drives the speaker unit based on the signal input to the signal input section, and the speaker unit outputs sound.

The power supply supplies electric power for driving the amplifier.

Further, the speaker portion can change its relative position to the body portion while being connected to the body portion, and the speaker portion can be separated from the body portion, or the speaker portion can be oriented in a direction to output sound. You can

Further, since the main body and the speaker are both flat, it is easy to store them in a bag or the like, which is convenient for carrying.

According to a second aspect of the present invention, in the portable sound station according to the first aspect, the speaker unit is a flat speaker unit having a flat diaphragm.

Next, the operation of the portable sound station according to the second aspect will be described.

Since the flat speaker unit has a flat diaphragm, it can be made thinner than a cone speaker having a cone-shaped diaphragm, and the speaker portion can be made thinner.

According to a third aspect of the present invention, in the portable sound station according to the first or second aspect, the connecting means extends along the width direction of the main body portion and the speaker portion and the main body portion. Is provided, and the speaker unit is relatively movable along the longitudinal direction of the shaft and is rotatable about the axis of the shaft.

Next, the operation of the portable sound station according to the third aspect will be described.

In the portable sound station according to a third aspect of the present invention, the speaker section can move relative to the main body section in the longitudinal direction of the shaft extending along the width direction of the main body section, and rotates about the axis of the shaft. be able to.

Therefore, one speaker unit and the other speaker unit can be separated from each other, and the direction of the speaker unit can be oriented toward the listener side, and stereo music reproduction with good separation can be performed.

According to a fourth aspect of the present invention, in the portable sound station according to any one of the first to third aspects, the speaker section outputs sound to both sides.

Next, the operation of the portable sound station according to the fourth aspect will be described.

In the portable sound station according to the fourth aspect, the speaker section outputs sound to both sides. Therefore, in the case where there are two listeners and the like, if the portable sound station is arranged between the two listeners, the same sound can be output to the two listeners.

According to a fifth aspect of the present invention, in the portable sound station according to any one of the first to fourth aspects, when the speaker portion is closely attached to both widthwise side surfaces of the main body portion. It is characterized in that the outer size is approximately A4 size.

Next, the operation of the portable sound station according to the fifth aspect will be described.

In the portable sound station according to the fifth aspect of the invention, since the outer size of the speaker unit is closely adhered to both widthwise side surfaces of the main body, the outer size is set to about A4 size. It is convenient when you do.

It is also possible to mount an A4 size notebook computer on the main body part and use the speaker part separately from the main body part. In this case, a unified feeling can be obtained in terms of design.

Strictly speaking, the A4 size is 297 m.
Although the size is m × 210 mm, the approximately A4 size here means that the longer dimension is 297 ± 20 mm and the shorter dimension is 210 ± 20 mm.

According to a sixth aspect of the present invention, in the portable sound station according to any one of the first to fifth aspects, the thickness of the main body portion and the thickness of the speaker portion are each 20 mm or less. It is characterized by

Next, the operation of the portable sound station according to the sixth aspect will be described.

In the portable sound station according to the sixth aspect, since the thickness of the main body and the thickness of the speaker are each 20 mm or less, portability is improved.

According to a seventh aspect of the present invention, in the portable sound station according to any one of the first to sixth aspects, the digital signal input from the signal input section is converted into an analog electric signal, It has a D / A converter which outputs the converted analog electric signal to the amplifier.

Next, the operation of the portable sound station according to the seventh aspect will be described.

In the portable sound station according to the seventh aspect, when the digital signal is input to the signal input section, the input digital signal is converted into an analog electric signal by the D / A converter, and the analog electric signal is sent to the amplifier. Is output.

Therefore, in the portable sound station according to claim 7, for example, a CD player,
It can be connected to a device such as a computer that outputs a digital signal.

According to an eighth aspect of the present invention, in the portable sound station according to any one of the first to sixth aspects, the amplifier amplifies a digital signal input from the signal input section, A D / A converter that converts the amplified digital signal into an analog electric signal and outputs the analog electric signal to the speaker is provided between the amplifier and the speaker.

Next, the operation of the portable sound station according to the eighth aspect will be described.

In the portable sound station according to the eighth aspect, when the digital signal is input to the signal input section, the input digital signal is amplified by the amplifier as it is.

The amplified digital signal is converted into an analog electric signal by the D / A converter and output to the speaker.

Therefore, in the portable sound station according to claim 8, for example, a CD player,
It can be connected to a device such as a computer that outputs a digital signal.

[0041]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a portable sound station of the present invention will be described below with reference to the drawings with reference to FIGS.

FIG. 1 is a perspective view showing the front side of the portable sound station 10 of this embodiment.

This portable sound station 10
Is roughly divided into a flat plate-shaped main body 12, a flat plate-shaped first speaker 14, and a flat plate-shaped second speaker 16.

As shown in FIG. 2, the main body portion 12 includes a thin main body case 18 including a lower cover 18A and an upper cover 18B.

Front side of lower cover 18A (direction of arrow F)
A power switch 20, a main lamp (LED) 22 for instructing that the power is turned on, and a volume adjusting volume 24 are provided.

As shown in FIGS. 2 and 3, the lower cover 18
The back side of A (the direction of the arrow B) is for an external power supply (for example, A
C100V) outlet 25 to connect the plug 25,
Analog signal input terminal 2 for inputting analog electrical signals
8. An analog signal output terminal 30 for outputting an analog electric signal and an optical digital signal input terminal 31 for inputting a digital optical signal are provided.

As shown in FIG. 2, inside the lower cover 18A, a battery for loading a D / A converter 33, a power amplifier 32, and a battery for supplying power to the D / A converter 33 and the power amplifier 32 is installed. A box 34 is provided.

As shown in FIG. 4, on the bottom surface side of the lower cover 18A, for example, a dry battery (not shown) is provided in the battery box 34.
There is an opening 38 for inserting the.

The opening 38 can be closed by a lid 40.

The lid 40 is attached to the lower cover 18 by screws 42.
It can be fixed to A.

The D / A converter 33 includes means for converting the optical digital signal into a digital electric signal, and also converts the converted digital electric signal into an analog electric signal and outputs the analog electric signal to the power amplifier 32. .

Further, the power amplifier 32 amplifies the inputted analog electric signal and outputs the amplified analog signal.

The power switch 20, the main lamp 22, the volume 24, the outlet 26, the analog signal input terminal 28, the analog signal output terminal 30, the D / A converter 33, the battery box 34, etc. are connected to the power amplifier 32 by a cable (copper wire). It is connected.

The optical digital signal input terminal 31 is connected to the D / A converter 33 by an optical cable (optical fiber).

In the portable sound station 10 of this embodiment, the optical digital signal input terminal 31 for inputting an optical digital signal is provided, but for example, a USB terminal, an IEEE1493 terminal, etc. for inputting a digital electric signal are provided. Is also good.

U to the portable sound station 10
By providing the SB terminal, the USB terminal of the portable sound station 10 and the USB terminal of the personal computer
It becomes possible to connect with an SB cable, and digital signals from a personal computer can be input.

If the notebook computer 116 is equipped with a wireless device (Bluetooth standard or the like) for transmitting signals by radio waves, the wireless device may be installed in the main body 12 to input signals wirelessly. I can.

Further, when the notebook computer 116 is equipped with an infrared port for transmitting signals by infrared rays, if an infrared port for receiving infrared signals is provided in the main body section 12, signals can be input by infrared rays. You can also

As shown in FIG. 2, inside the lower cover 18A, block-shaped bearings 44 are provided at both corners on the rear side in the width direction (arrow L direction side and arrow R direction side).

As shown in FIG. 5, the bearing 44 is formed with a round hole 46 penetrating in the width direction.

A pipe 48 is slidably and rotatably inserted into the round hole 46.

On the side surface of the bearing 44 on the arrow F direction side, a hole 50 and a hole 52 communicating with the round hole 46 are formed.

A fixing screw 53 is screwed into the hole 50 on the side surface of the bearing 44.

Inside the hole 50, a pin 54 having a hemispherical tip and a compression coil spring 56 are inserted.

The compression coil spring 56 presses the tip of the pin 54 against the outer peripheral surface of the pipe 48.

An annular groove 58 having an arc-shaped cross section is formed on the outer peripheral surface of the pipe 48. On the other hand, in the hole 52,
A fixing screw 60 is screwed into the side surface of the bearing 44.

A brake shoe 62 is provided inside the hole 52.
And the compression coil spring 64 is inserted.

The compression coil spring 64 presses the tip of the brake shoe 62 against the outer peripheral surface of the pipe 48.

As shown in FIG. 2, each of the first speaker 14 and the second speaker 16 is provided with a thin box-shaped speaker cabinet 68.

The speaker cabinet 68 includes a first cabinet member 68A and a second cabinet member 68B.
It is composed of one member.

The first cabinet member 68A and the second cabinet member 68A
The cabinet member 68B is connected to each other by screws (not shown).

As shown in FIG. 5, a flat speaker unit 70 is built in the speaker cabinet 68.

The flat speaker unit 70 is, for example, P
What is called a multi-cell flat speaker described in CT / JP00 / 03755 and the like can be used, and there are various sizes, but all of them are targets for use.

As shown in FIGS. 6 and 7, the flat speaker unit 70 includes a yoke 220 formed of a plate-shaped member made of a magnetic material.

In the magnet fixing portion 220A of the yoke 220,
A plurality of flat permanent magnets 222 formed in a square shape
However, the magnetic pole surfaces having different polarities are alternately located, and the magnetic pole surfaces are fixedly arranged by adhering a predetermined gap with the magnetic pole surfaces facing upward in the drawing.

The permanent magnet 22 is provided on the upper surface side of the yoke 220.
The diaphragm 70A is arranged close to the magnetic pole surface so as to be parallel to the second magnetic pole surface, that is, the upper surface of the yoke 220.

Diaphragm mounting portion 220 of yoke 220
An outer peripheral edge of a rectangular frame-shaped frame body 224 is fixed to B with a spacer 225 made of paper or the like interposed.

An edge 227, which is an elastic portion having a semicircular arc-shaped cross section, is continuously formed along the outer peripheral edge of the frame body 224.

The outer peripheral edge of the diaphragm 70A is adhered to the inner peripheral edge of the frame body 224.

The permanent magnet 222 is attached to the diaphragm 70A.
Coil 22 formed in a spiral shape corresponding to each of the
6 are arranged.

Each coil 226 is formed so as to be spirally wound so as to be substantially similar to the outer edge of the permanent magnet 222.

A magnetic flux oriented in a direction substantially parallel to the film surface of the diaphragm 70A is linked to each coil 226.

When a current is passed through the coil 226, a force in the direction perpendicular to the film surface of the diaphragm 70A is received, and the diaphragm 70A is displaced in the direction perpendicular to the film surface.

Therefore, by energizing the coil 226 with an electric signal representing the sound to be generated, the diaphragm 7
The 0A vibrates in response to this electric signal and can generate an acoustic signal.

In the magnet fixing portion 220A of the yoke 220,
Since the plurality of holes 228 are formed, the planar speaker unit 70 can output sound to both sides of the diaphragm 70A.

As shown in FIG. 5, the flat speaker unit 70 is fixed to the second cabinet member 68B (or the first cabinet member 68A) with screws 72.

As shown in FIGS. 1 and 2, the first cabinet member 68A and the second cabinet member 68B include
Innumerable small holes 74 are formed in a matrix at positions facing the flat speaker unit 70 (not shown in FIGS. 1 and 2).

Instead of the innumerable small holes 74, punching metal, metal mesh or the like may be used.

As shown in FIG. 5, the block-shaped shaft fixing member 7 is provided at the longitudinal end of the second cabinet member 68B.
6 is integrally provided.

An end portion of the pipe 48 is inserted into a round hole 78 penetrating the speaker cabinet 68 and the shaft fixing member 76, and is firmly fixed with an adhesive agent, a screw (not shown) or the like.

As shown in FIGS. 2 and 5, the speaker cord 79 connecting the power amplifier 32 and the flat speaker unit 70 passes through the inside of the pipe 48.

As shown in FIGS. 1 and 3, a groove 80 is formed along the longitudinal direction of the speaker cabinet 68 on the side surface of the speaker cabinet 68 on the main body 12 side.

As shown in FIG. 8, a baffle board 81 made of a rectangular plate material can be inserted into the groove 80 of the first speaker 14 and the groove 80 (not shown) of the second speaker 16 from the groove ends.

As shown in FIGS. 1 and 3, the main body case 1
8 has a stopper pin 8 with a circular cross section on the speaker side surface.
2 is protruding.

As shown in FIG. 9, the stopper pin 82 is
It is fixed to the lower cover 18A with screws 84.

A speaker-side tip portion of the stopper pin 82 is formed in a hemispherical shape, and a groove 86 having a semicircular cross section is formed in the vicinity of the tip portion.

A hole 88 into which the stopper pin 82 can be inserted is formed on the side surface of the speaker cabinet 68 on the main body side, and a lock member 90 is attached to the inside of the speaker cabinet 68 with a screw 92.

The lock member 90 is provided with a pair of elastically deformable claw portions 94 facing each other, and a semicircular projection 96 is integrally formed near the tip of the claw portion 94.

As shown in FIG. 9B, the stopper pin 8
When 2 is inserted between the pair of claw portions 94, the protrusion 96 is caught in the groove 86, and the speaker cabinet 68 can be held in a state of being in close contact with the main body portion 12 (FIG. 10).
reference).

As described above, in the present embodiment, the stopper pin 82 and the lock member 90 constitute the lock mechanism of the speaker.

As shown in FIGS. 5 and 10, the pipe 48
A flange-shaped stopper 66 having a diameter larger than that of the pipe 48 is provided at an end portion on the lower cover 18A side.

On the outer peripheral surface of the stopper 66, a protrusion 66A is formed.
Are integrally formed.

A stopper block 98 is formed along the pipe 48 on the lower cover 18A.

In the stopper block 98, a groove 98A having a substantially semicircular cross section is formed along the longitudinal direction of the pipe 48 so as to escape the pipe 48.

The projection 66A of the stopper 66 abuts on the top of the stopper block 98, whereby the rotation angle of the pipe 48, that is, the first speaker 14 and the second speaker 1.
The rotation angle of 6 is limited.

In this embodiment, the rotatable angles of the first speaker 14 and the second speaker 16 are limited to 180 degrees, but this rotatable angle can be changed by changing the shape of the stopper block 98. It is possible.

In FIG. 11, the first speaker 1 is attached to the main body 12.
4 and the second speaker 16 are shown in close contact with each other during storage.

The portable sound station 10 of this embodiment has an A4 size (width W = 29) when stored.
The depth is 7 mm and the depth D is 210 mm.

The portable sound station 10 is
Each thickness H of the main body 12, the first speaker 14, and the second speaker 16 is 20 m so that it can be conveniently carried in a bag or carried.
It is set to m.

As shown in FIGS. 2 and 12, the lower cover 1
8A has a pair of hooking holes 104 for hooking the main body 12 to the hooks 102 attached to the wall 100.

A pocket 106 as shown in FIGS. 12 and 13 can be attached to and detached from the main body portion 12.

As shown in FIG. 13, a hook 108 is formed on the back surface of the pocket 106, and as shown in FIG. 12, a hole 110 with which the hook 108 engages is formed in the upper cover 18B of the main body portion 12. Has been done.

As shown in FIG. 12, a portable CD player 112 or the like can be placed in the pocket 106.

As shown in FIG. 13, at the bottom of the pocket 106, a cord (not shown) for connecting the analog signal output terminal (not shown) of the portable CD player 112 and the analog signal input terminal 28 of the main body 12 is provided. ), A hole 114 through which an optical cable or the like connecting the optical digital signal output terminal of the portable CD player 112 and the optical digital signal input terminal 31 of the main body portion 12 can be inserted.

An output reversing switch 120 is provided on the front side of the main body 12.

For example, as shown in FIG. 1, the first speaker 1
4 and the second speaker 16 are erected to hear the sound from the front side of the main body 12, it is necessary to output the sound of the left channel from the first speaker 14 and the sound of the right channel from the second speaker 16. , When a sound is heard from the back side of the main body 12 as shown in FIG.
When listening to the sound by mounting the sound on the right side, it is necessary to output the sound of the right channel from the first speaker 14 and the sound of the left channel from the second speaker 16.

Therefore, by operating the output reversing switch 120, the first speaker 14 outputs the left channel sound, the second speaker 16 outputs the right channel sound, and the first speaker 14 outputs the sound. The right channel sound and the second state in which the left channel sound is output from the second speaker 16 can be switched to the second state. (Operation of Portable Sound Station) Next, the operation of the portable sound station 10 of this embodiment will be described.

As shown in FIG. 11, the portable sound station 10 includes a first speaker 1 on the main body 12.
4 and the second speaker 16 are brought into close contact with each other, and the first speaker 14
And the second speaker 16 can be held on the main body 12 (see FIG. 9).
(See (B)).

Thus, the main body 12 and the first speaker 1
Since the fourth speaker 16 and the second speaker 16 are integrated into a single plate, it becomes easy to carry.

FIG. 14 shows a state in which the portable sound station 10 is used with the notebook computer 116.

As shown in FIG. 14, A is placed on the main body 12.
A 4 size notebook computer 116 is mounted.

The first speaker 14 and the second speaker 16 are separated from the main body 12 and arranged on both sides of the display 118 of the notebook computer 116.

Since the first speaker 14 and the second speaker 16 are rotatable, the display 11 as shown in FIG.
It can be adjusted to a tilt of 8 and can appear to be integrated with the display 118.

In this example, the notebook computer 116 is used.
The earphone jack and the analog signal input terminal 28 of the main body 12 are connected by a cord (not shown).

When the main body 12 is provided with a USB terminal, the USB terminal of the laptop computer 116 and the main body 12 may be connected with a USB cable.

If the notebook computer 116 is provided with an optical digital signal output terminal, the optical digital signal output terminal of the notebook computer 116 and the optical digital signal input terminal 31 of the main body 12 are connected by an optical cable. May be.

If the laptop computer 116 is equipped with a radio device (Bluetooth standard or the like) for transmitting signals by radio waves, the main body portion 12 may be equipped with a radio device to input signals wirelessly. .

Further, when the notebook computer 116 is equipped with an infrared port for transmitting signals by infrared rays, the main body part 12 may be provided with an infrared port for receiving infrared signals and input signals by infrared rays. .

Further, the main body 12 is connected to the notebook computer 116.
Since it is placed underneath, it does not take up extra space.

When sliding the first speaker 14 and the second speaker 16, the tip of the pin 54 urged by the compression coil spring 56 is formed on the outer peripheral surface of the pipe 48 as shown in FIG. 5B. When inserted in the groove 58 formed, a click feeling is obtained.

Therefore, when the first speaker 14 and the second speaker 16 are slid so that the distance between the first speaker 14 and the second speaker 16 becomes slightly wider than the width of the display 118, the click interval is obtained. The position of the groove 58 is set so that the first speaker 14
Also, the width of the second speaker 16 can be easily adjusted.

FIG. 12 shows a state where the portable sound station 10 is hung on a wall.

Since the first speaker 14 and the second speaker 16 are rotatable, the first speaker 14 and the second speaker 16 may be directed downward when the portable sound station 10 is mounted at a high position on the wall. it can.

In this example, the output terminal (or earphone jack) of the portable CD player 112 is used.
And an analog signal input terminal 28 of the main body 12 are connected by a cord (not shown).

When the portable CD player 112 is provided with an optical digital signal output terminal, the optical digital signal output terminal of the portable CD player 112 and the optical digital signal input terminal 31 of the main body 12 are connected by an optical cable. You may connect.

In this example, the output reversing switch 120 is switched so that the first speaker 14 outputs the right channel sound and the second speaker 16 outputs the left channel sound.

Further, in the portable sound station 10 of the present embodiment, the first speaker 14 and the second speaker 16 can output sounds from both sides, respectively, and therefore are shown in FIG. 1, FIG. 3, FIG. So the first speaker 1
By using the 4 and the second speaker 16 upright,
Both sides of the first speaker 14 and the second speaker 16 can hear sound with the same volume and the same sound quality.

When listening to the sound from the back side of the main body 12 (see FIG. 3), the output is inverted so that the first speaker 14 outputs the right channel sound and the second speaker 16 outputs the left channel sound. The switch 120 may be operated.

Further, in this portable sound station 10, as shown in FIG. 8, a baffle board 81 can be inserted into the grooves 80 of the first speaker 14 and the second speaker 16 for use.

By arranging the baffle board 81 between the first speaker 14 and the second speaker 16, interference between sounds output on the front side and sounds output on the back side (particularly in the low range) is prevented. Can be suppressed.

Further, by forming the baffle board 81 with a plate material (for example, balsa material, styrofoam plate, etc.) that easily resonates at low sound, vibrations of the first speaker 14 and the second speaker 16 are transmitted to the baffle board 81. It is also possible for the baffle board 81 to resonate with a low frequency sound and extend the frequency band to the low frequency side.

As shown in FIG. 15, a carrying handle 122 may be rotatably provided on the main body 12.

Further, in this embodiment, the power switch 20, the main lamp 22, the volume 24, the outlet 26, the analog signal input terminal 28, the analog signal output terminal 30, the optical digital signal input terminal 31, the power amplifier 32 are provided in the main body 12. Although the battery box 34 and the output reversing switch 120 are provided, they may be provided in the first speaker 14 and the second speaker 16 in some cases.

Although not shown, a small music reproducing device such as an MP3 player and other electric equipment such as a preamplifier may be provided in an empty space inside the main body 12.

A mounting portion for detachably mounting a small music reproducing device such as an MP3 player may be provided on the main body 12.

In the portable sound station 10 of this embodiment, the first speaker 14 and the second speaker 16 are provided.
In order to make the device thin, the flat speaker unit 70 having the flat diaphragm 70A is used, but a speaker unit other than the flat speaker unit 70 may be used as long as it is thin.

Further, the size of the portable sound station 10 of the present embodiment when it is stored is A4 size, but it goes without saying that it may be another size such as B5 size.

Further, in the above embodiment, when the digital signal is connected to the digital device, the input digital signal is converted into the analog signal by the D / A converter 33, and the converted analog signal is amplified by the power amplifier 32 to obtain the first analog signal. Although output to the speaker 14 and the second speaker 16, the present invention is not limited to this. The power amplifier 32 is a so-called digital amplifier (an amplifier that amplifies an input digital signal as a digital signal).
There is also what is called a 1-bit digital amplifier. ), The amplified digital signal may be converted into an analog electric signal by a D / A converter and output to the first speaker 14 and the second speaker 16.

Since the digital amplifier has better power conversion efficiency than an analog amplifier which amplifies an analog signal,
It is suitable for the portable sound station 10 because it generates little heat and consumes less power, and it is small and lightweight (one chip is commercially available).

[0150]

As described above, according to the portable sound station of the present invention, the portable sound station is excellent in that it is thin, is not bulky even if it is put in a bag, is easy to carry, and can be used in various ways. Have.

[Brief description of drawings]

FIG. 1 is a front perspective view of a portable sound station according to an embodiment of the present invention.

FIG. 2 is a perspective view showing an internal structure of the portable sound station according to the embodiment of the present invention.

FIG. 3 is a perspective view of the portable sound station according to the embodiment of the present invention viewed from the back side.

FIG. 4 is a perspective view of the portable sound station according to the embodiment of the present invention as viewed from the bottom side.

FIG. 5 (A) is a partial cross-sectional view of the vicinity of the bearing showing a state where the speakers are maximally separated from each other, and FIG. It is a figure.

FIG. 6 is an exploded perspective view of a flat speaker unit.

FIG. 7 is a cross-sectional view of a flat speaker unit.

FIG. 8 is a perspective view of a portable sound station with a baffle board attached.

FIG. 9A is a plan view of the lock mechanism showing a state where the speaker is separated from the main body portion, and FIG. 9B is a plan view of the lock mechanism showing a state where the speaker is brought into close contact with the main body portion and held. .

FIG. 10 is a cross-sectional view of a main body part illustrating a mechanism for limiting the rotation angle of a pipe.

FIG. 11 is a perspective view of the portable sound station showing a stored state.

FIG. 12 is a perspective view of the portable sound station showing a state when it is hung on a wall.

FIG. 13 is a perspective view seen from the back side of a pocket attached to the main body.

FIG. 14 is a perspective view of a portable sound station and a notebook computer.

FIG. 15 is a perspective view of a handle attached to the main body.

[Explanation of symbols]

10 portable sound station 12 Main body 14 First speaker (speaker section) 16 First speaker (speaker section) 28 Analog signal input terminal (signal input section) 31 Optical digital signal input terminal (signal input section) 33 D / A converter 32 power amplifier 34 Battery box (power supply) 48 pipes (shafts, connecting means) 70 Flat speaker unit (speaker unit) 70A diaphragm

Claims (8)

[Claims] 1. A flat plate-shaped main body portion, flat plate-shaped speaker portions provided on both sides in the width direction of the main body and having speaker units built therein, a signal input portion for inputting a signal, the main body portion and the speaker portion. An amplifier for driving the speaker unit based on a signal input from the signal input unit, and a power supply provided for at least one of the main body unit and the speaker unit for driving the amplifier. A connecting part that connects the main body part and the speaker part to each other, and the connecting part supports the speaker part so that the relative position can be changed in a state where the speaker part is connected to the main body part. And a portable sound station. 2. The portable sound station according to claim 1, wherein the speaker unit is a flat speaker unit having a flat diaphragm. 3. The connecting means includes a shaft extending along a width direction of the main body part to connect the speaker part and the main body part, and the speaker part is relatively arranged along a longitudinal direction of the shaft. The portable sound station according to claim 1 or 2, wherein the portable sound station can move and rotate about an axis of the axis. 4. The portable sound station according to claim 1, wherein the speaker unit outputs sound to both sides. 5. The outer size when the speaker part is closely attached to both widthwise side surfaces of the main body part is approximately A4 size, according to any one of claims 1 to 4.
Portable sound station according to the paragraph. 6. The portable sound station according to claim 1, wherein the thickness of the main body portion and the thickness of the speaker portion are each 20 mm or less. 7. A D / A converter for converting a digital signal input from the signal input unit into an analog electric signal and outputting the converted analog electric signal to the amplifier. 7. The portable sound station according to claim 6. 8. The amplifier amplifies a digital signal input from the signal input unit, and converts the amplified digital signal into an analog electric signal between the amplifier and the speaker to the speaker. 7. A portable sound station according to claim 1, further comprising a D / A converter for outputting.