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JP2001292488

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Notice
This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
financial decisions, should not be based on machine-translation output.
DESCRIPTION JP2001292488
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
speaker apparatus connected to an audio / visual apparatus such as a television receiver or the
like and used.
[0002]
2. Description of the Related Art Various speaker devices are provided which are connected to an
audio visual apparatus such as a television receiver and installed on a floor or a stand of a room
where the audio visual apparatus is to be used. . In the case of such a speaker device, the
installation surface of the speaker device in contact with a reference surface such as a floor or a
stand where the speaker device is installed is one surface determined in advance, and the sound
emission direction of the sound emitted from the speaker device is 1 Only in the direction.
[0003]
For example, in the case of a speaker device having a general rectangular parallelepiped housing,
the sound emission surface for emitting sound is perpendicular to the installation surface in
contact with the reference surface on which the speaker device such as a floor or a stand is
installed. It has been Therefore, when the speaker device is installed on a floor or a base, the
main sound emission direction of the sound emitted from the speaker device is from the inside of
03-05-2019
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the speaker device through the sound emission surface to the outside of the speaker device. In
the direction parallel to the reference plane.
[0004]
When such a speaker device is used by connecting it to a television receiver etc., a place slightly
away from the speaker device, for example, a place several meters away from the speaker device,
listens to the emitted sound from the speaker device. The viewer's viewing position.
[0005]
Then, if the speaker device is installed so that the sound emission surface of the speaker device
faces the viewer, the sound emission direction of the sound emitted from the speaker device is
determined by the viewer located at a location slightly away from the speaker device. It becomes
a direction.
In this case, although depending on the directional characteristics of the speaker device, the
sound emission direction of the sound emitted from the speaker device sufficiently covers the
direction in which the viewer's ear is present, and the sound from the speaker device is good. To
be able to watch on
[0006]
However, when the small speaker device is installed and used near a listener, such as on a desk,
that is, the desk where the speaker device is installed as described above If the sound emission
surface of the speaker device is substantially perpendicular to the surface of the speaker, i.e., the
reference surface, the main sound emission direction of the sound from the speaker device is not
in the direction in which the viewer's ear is located. It may not be possible to hear the sound
from
[0007]
For this reason, in the case of a speaker device installed and used near a desk where the listener
is on hand, the installation surface of the speaker device to be in contact with the reference
surface is determined. The sound emission surface of the speaker device is provided obliquely to
the installation surface, and the main emission direction of the sound from the speaker device is
a direction in which the user's ear is obliquely upward with respect to the installation surface.
Ingenuity is also being made.
03-05-2019
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[0008]
By the way, as described above, in some cases, the speaker device connected to the television
receiver or the like is used with the hand of the user reaching a position where it is used, and in
some cases, the television receiver. As in the case of watching a broadcast program through,
there are cases where it is desirable to use both of them, such as placing them at a certain
distance from the user and using them.
[0009]
However, as described above, the installation surface of the speaker device in the case of
installing the speaker device on a floor or a stand is determined in advance, and the sound
emission direction of the installation surface is also only one direction.
Therefore, unless the user devises the placement of the speaker device, one speaker device may
be used with the user's hand in a position where the user's hand can reach and when it is used at
a distance from the user In any case, it is unreasonable to be able to listen to the sound emitted
from the speaker device well.
[0010]
In addition, when the speaker device is placed in close proximity to the user and used, the
speaker device is provided with various operation knobs and operation keys, and the user
operates the sound when necessary, and the sound is emitted. There is a demand to be able to
make adjustments about.
However, even if the speaker device is provided with various operation knobs and operation
keys, the usability is deteriorated if they can not be operated easily and reliably with one hand.
[0011]
That is, in order to prevent the speaker device from falling or moving when operating various
operation knobs and operation keys provided in the speaker device, the user holds the speaker
device with one hand and the other hand with the other hand. It is inconvenient if you have to
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operate the operation knob or the operation key.
[0012]
In view of the above, the present invention enables the user to listen well even when used in the
vicinity of the user and when used at a position slightly away from the user. A speaker device
capable of emitting sound and providing an operating means so as to be able to operate easily
and reliably even with one hand when used in the vicinity of the user is provided. The purpose is
to
[0013]
SUMMARY OF THE INVENTION In order to solve the above problems, the speaker apparatus of
the invention according to claim 1 has a polyhedral casing, and one face of the polyhedral casing
emits sound. A speaker is provided so as to be a sound emitting surface, and the first surface of
the casing and the sound emitting surface, of which the angle formed by the sound emitting
surface is a first angle. Each of the second surface of the housing and the second surface of the
casing, which has a second angle different from the first angle, can be used as the installation
surface.
[0014]
According to the speaker device of the first aspect, the speaker is attached to the inside of the
speaker device such that one surface of the polyhedral casing is a sound emitting surface.
When the first surface of the casing of the speaker device is an installation surface in contact
with a floor, a stand, or the like on which the speaker device is installed, an angle between the
surface of the casing of the speaker device to be the sound emission surface and the installation
surface Is the first angle, and the second surface different from the first surface of the casing is
the installation surface, the angle of the angle with the installation surface is different from the
first angle. It is considered to be a plane that forms an angle of 2.
[0015]
That is, by changing the placement of the speaker device and changing the installation surface,
the angle between the installation surface and the sound emission surface can be changed, and
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the sound emission direction of the sound emitted from the speaker can be changed. It will be.
Thus, the speaker device can be changed from the speaker device by changing the installation
surface of the speaker device depending on whether the user places the speaker device very
close to the user and the user a little away from the user. In any case, it is possible to favorably
listen to the sound emitted from the speaker device.
[0016]
The speaker device of the invention according to claim 2 is the speaker device according to claim
1, wherein the first angle is a right angle, and the second angle is an acute angle. Do.
[0017]
According to the speaker device of the second aspect of the present invention, of the first angle
and the second angle which is the angle between the installation surface of the speaker device
and the sound emitting surface, the first angle is a right angle. And the second angle is acute.
[0018]
Thus, assuming that the installation surface is a plane at which the angle formed by the sound
emission surface is at a right angle, the listener is on the side opposite to the sound emission
surface of the speaker device and at a position slightly away from the speaker device. Also, since
the sound emission direction of the sound emitted from the speaker device can be set to the
direction in which the listener's ear is present, the sound can be well listened to.
[0019]
In addition, if the installation surface is a surface where the angle between the sound emission
surface and the sound emission surface is an acute angle, even if the listener is in the vicinity of
the speaker device whose hand can reach the speaker device, the speaker device emits sound
Since the sound emission direction of the sound can be set as the direction in which the listener's
ear near the speaker device is present, the sound emitted from the speaker device can be
favorably listened to.
[0020]
The speaker device of the invention according to claim 3 is the speaker device according to claim
1 or 2, wherein a portion on the side opposite to the second surface of the housing from the user
It is characterized by providing the operation means which receives the instruction input of.
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[0021]
According to the speaker device of the third aspect of the present invention, it is the surface of
the housing that can be the installation surface, and the angle formed with the sound emitting
surface of the speaker device is the second. Various operation means are provided in the part of
the housing | casing of the side which opposes the 2nd surface which becomes an angle.
[0022]
Thus, if the speaker device is installed with the second surface as the installation surface, the
second installation surface supports the entire speaker device even if the pressing operation or
the rotation operation of the operation means is performed, and the speaker device The
installation state of can be kept stable.
Therefore, even with one hand, it is possible to easily and reliably perform the operation on the
operation means.
[0023]
According to a fourth aspect of the present invention, there is provided the speaker apparatus
according to the first or second aspect, wherein the housing of the polyhedron is formed to have
a substantially triangular prism shape. And an operation unit for receiving an instruction input
from a user is provided on the top of the case facing the second surface.
[0024]
According to the speaker device of the fourth aspect of the present invention, the polyhedral
housing of the speaker device is substantially in the shape of a triangular prism and is a surface
of the housing that can be an installation surface, Various operation means are provided on the
top of the housing on the side opposite to the second surface where the angle formed with the
sound emitting surface of the speaker device is the second angle.
That is, the second surface is one of the side surfaces substantially in the shape of a triangular
prism, and various operation means are provided on the top opposite to the side surface.
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[0025]
Thus, if the speaker device is installed with the second surface as the installation surface, the
installation state of the speaker device can be kept stable when pressing operation or turning
operation of the operation means, and even with one hand, it is easy and It is possible to reliably
operate the operation means.
[0026]
A speaker apparatus according to a fifth aspect of the present invention is the speaker apparatus
according to the third or fourth aspect, further comprising speech speed conversion means for
converting an input audio signal into an audio signal of a slow speech speed. The operation
means is characterized in that it receives an instruction input for instructing a target speech
speed to the speech speed conversion means.
[0027]
According to the speaker device of the fifth aspect, the speaker device includes the speech speed
conversion means, and from the input speech signal, the original speech speed of the input
speech information without changing the sound quality of the input speech signal (normal It is
designed to be able to generate speech speed conversion speech signals of slower decelerating
speed than the speed of speech speed).
[0028]
An operation means is provided as a means for receiving an instruction input for instructing the
speech speed intended by the user to the speech speed conversion means.
The operation means is provided at a position where the installation state of the speaker
apparatus provided with the operation means is stably maintained even if the user operates the
operation means.
[0029]
As a result, even if the speech speed of the sound emitted from the speaker device is changed by
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frequently operating the operation means provided in the speaker device, the speaker device is
not tilted or moved. And, the operating means can be operated simply and reliably.
Therefore, the speech speed conversion function installed in the speaker device can be
sufficiently used.
[0030]
BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a speaker device
according to the present invention will be described below with reference to the drawings.
In the embodiment described below, the case where the housing of the speaker device according
to the present invention is a triangular prism (pentahedron) will be described as an example.
[0031]
FIG. 1 is a diagram for explaining the appearance of the speaker device 100 according to this
embodiment.
The housing of the speaker device 100 according to this embodiment is, as shown in FIG. 1,
substantially in the shape of a triangular prism, and a plane a which is orthogonal to the
longitudinal center line of the triangular prism and is substantially triangular in shape. , A surface
b, and a side surface of a triangular prism, and is a configuration of a pentahedron having five
surfaces of a surface s1, a surface s2, and a surface s3 provided so as to be orthogonal to the
surface a and the surface b. .
[0032]
Then, in the speaker device 100 of this embodiment having a casing having a substantially
triangular prism shape, the left channel speaker SPL and the right channel speaker SPR are
provided inside the speaker device 100 so that the surface s1 becomes a sound emitting surface.
And are attached.
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Therefore, the sound emission direction of the sound to be emitted from the surface s1 to be the
sound emission surface is set to be a direction from the inside of the speaker device 100 toward
the outside through the sound emission surface s1.
[0033]
Further, in this embodiment, when the speaker device 100 is placed on a reference surface such
as a floor or a desk, the installation surface of the speaker device 100 to be in contact with the
reference surface is the surface s3 or the surface b. Two aspects are made to be able to become.
For this reason, as shown in FIG. 1, projections b1, b2 and b3 which are installation legs are
provided on the surface b when the surface b is an installation surface.
Further, although not shown, in the vicinity of, for example, the four corners of the surface s3, a
protrusion serving as an installation leg is provided in the same manner as the protrusion
provided on the surface b.
[0034]
In the speaker device 100 according to this embodiment, as shown in FIG. 1, the user faces the
top facing the surface s3, ie, the top formed by the sound emitting surface s1 and the surface s2
adjacent thereto. There are provided various operation means such as operation keys and
operation knobs operated by the.
[0035]
The speaker apparatus 100 according to this embodiment is used by being connected to an audio
visual apparatus such as a television receiver, but is not merely for emitting sound corresponding
to an audio signal from the television receiver. The audio signal from the television receiver can
be converted into an audio signal of a deceleration speed slower than the original speech speed
of the input audio signal without changing its sound quality.
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Thus, the speaker apparatus of this embodiment has a speech speed conversion function.
[0036]
Therefore, as shown in FIG. 1, in addition to the power switch 11 and the volume control knob
21, the speech speed at which the speech speed of the input speech signal is predetermined is
set as various operation means provided on the top facing the surface s3. Mode changeover
switches 31, 32, 33, 34 are provided for the user to instruct conversion according to the
conversion rate.
[0037]
In addition, as shown in FIG. 1, LEDs (Light Emitting) for clearly notifying the user which speech
speed sound is to be emitted in the vicinity of the switches 31, 32, 33, 34. Diodes 41, 42, 43, 44
are provided.
[0038]
Then, after the power switch 11 is turned on to supply power to each part of the speaker device
100, the volume knob 21 is turned by pressing the switches 31, 32, 33, 34. Thus, it is possible to
adjust the speech speed and volume of the sound to be emitted from the sound emission surface
s1 of the speaker device.
[0039]
FIG. 2 is a block diagram for explaining the configuration of the speaker device 100 according to
this embodiment shown in FIG.
In the following, in order to simplify the description, a case where the speaker apparatus 100 of
this embodiment is connected to a television receiver and used will be described as an example.
[0040]
The speaker device 100 according to this embodiment, as shown in FIG. 2, enables connection
with a headphone plug of a television receiver, and the headphone terminal 1 for receiving the
supply of audio signals from the television receiver; It has input terminals 2L and 2R for analog
audio signals of left and right two channels for receiving supply of audio signals from an audio
output terminal of the device.
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[0041]
The analog audio signal supplied to the speaker device 100 of this embodiment through the
headphone terminal 1 and the input terminals 2L and 2R of the left and right analog audio
signals is supplied to the A / D conversion circuit 3.
The A / D conversion circuit 3 converts the audio signal supplied thereto into a digital signal and
supplies the digital signal to the audio signal processing unit 4.
[0042]
The audio signal processing unit 4 uses the silent section of the audio signal supplied thereto,
and does not change the sound quality of the input audio signal, and is slower than the original
speech speed (normal speech speed) of the input audio information A speech speed conversion
speech signal is generated at a reduced speed.
That is, the audio signal processing unit 4 has a function as speech speed conversion means.
[0043]
The mode change switches 31, 32, 33, 34 for instructing the user to convert the speech speed of
the input voice signal according to the speech speed conversion rate previously determined using
FIG. , And the audio signal processing unit 4.
Then, the audio signal processing unit 4 performs speech speed conversion in accordance with
an instruction from the user input through the switches 31, 32, 33, 34 as the digital signal from
the A / D conversion circuit 3. The voice signal after the speech speed conversion is written to a
static random access memory (SRAM) 6, and the voice signal is read and output from the SRAM 6
in the order of writing.
03-05-2019
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[0044]
For this reason, the audio signal processing unit 4 is configured as a DSP (Digital Signal
Processor) having a control unit and a data processing unit for processing an audio signal
converted into digital data, and the control unit is ROM (ROM). Controlling the data processing
unit according to the program for processing the audio signal stored in the Read Only Memory 5
and the instruction input from the user input through the mode switching switch to convert the
speech speed of the audio signal It is configured to be able to.
[0045]
Then, the speaker device 100 according to this embodiment outputs the voice signal input to the
speaker device 100 at the same voice speed as it is in the normal (NORMAL) mode in which the
speech speed conversion ratio is 100%, SLOW mode with a speech conversion rate of 88% that
converts speech to a speech speed slightly slower than normal mode, and 82% of speech speed
conversion that converts speech to a speech speed that is slightly slower than slow mode It has
four speech speed conversion modes: SLOWER mode, and SLOW EST mode that converts speech
into speech signal with speech speed slightly slower than slow mode and 76% speech speed
conversion rate.
[0046]
Further, in the speaker device of this embodiment, the switch 31 is used to switch to the normal
mode, and the switch 32 is switched to the slow mode.
Further, switching to the slow mode is performed using the switch 33, and switching to the
slowest mode is performed using the switch 34.
[0047]
Further, as described above, the LEDs 41 and 42 for notifying the user of which speech speed
sound is emitted in the vicinity of each of the mode selection switches 31, 32, 33 and 34. , 43, 44
are provided.
These are drive-controlled by the LED control unit 40 that controls the LEDs 41, 42, 43, 44 in
accordance with the control signal from the audio signal processing unit 4 configured as a DSP.
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[0048]
Then, in the audio signal processing unit 4, the digital audio signal of the speech speed according
to the instruction from the user is supplied to the D / A conversion circuit 7 and is converted
back to an analog audio signal here, Supplied to
[0049]
The audio power amplifier 8 adjusts the level of the analog audio signal supplied thereto in
accordance with the instruction input from the user input through the volume adjustment knob
21, and the analog audio signal of the left channel after level adjustment is left The signal is
supplied to the channel speaker SPL, and the analog audio signal of the right channel is supplied
to the right channel speaker SPR.
[0050]
Further, the speaker device 100 according to this embodiment is provided with the headphone
plug 9, and by connecting the headphones to this, the speaker device 100 can also listen to the
speech whose speech speed has been converted through the headphones. It is made to be able.
[0051]
Although not shown in FIG. 2 for the sake of simplicity, when the headphones are connected to
the headphone plug 9, the speakers SPL and SPR do not emit sound.
Similarly, for example, when the headphone terminal is inserted into the headphone plug of the
television receiver, the audio signal input through the audio signal input terminals 2L and 2R is
not received.
[0052]
And as above-mentioned, the speaker apparatus 100 of this embodiment is equipped with a
speech speed conversion function, The speaker apparatus 100 of this embodiment is connected
to a television receiver, and it is close to a viewer. You can watch TV broadcast programs while
changing the speaking speed of the sound to be emitted.
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In addition, when it is not necessary to change the speech speed of the sound to be emitted, the
speaker apparatus 100 of this embodiment is used at a position slightly away from the viewer,
such as right behind the connected television receiver. You can also.
[0053]
The usage aspect of the speaker apparatus 100 of this embodiment will be described with
reference to FIGS. 3 and 4.
FIG. 3 and FIG. 4 are diagrams for explaining the usage of the speaker device 100 according to
this embodiment.
Among these, FIG. 3 is for describing an embodiment in the case where the speaker device 100
of this embodiment is used in the vicinity of the user, and FIG. 4 is at a position slightly away
from the user. It is for demonstrating the aspect in the case of leaving and using it.
[0054]
First, an embodiment in which the speaker device 100 is used in the vicinity of the user will be
described.
Among television broadcast programs, for example, bilingual broadcast news programs and
movies that are broadcasted in bilingual Japanese and English languages and can be used to
selectively listen to either audio. There is a program.
[0055]
In the case of viewing such a bilingual broadcast program, for example, in the case where a
Japanese who is learning English selects to output English sound, as shown in FIG. The speaker
device 100 connected to, for example, a headphone plug of the receiver 200 is placed at a
position where the user's hand as the viewer reaches, that is, in the vicinity of the viewer.
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[0056]
As a result, the viewer operates the mode switching switches 31, 32, 33, 34 provided in the
speaker device 100 to slow down the speech speed of the English speech, set the speech speed to
the normal speed, etc. It is possible to listen while comparing English voices of different speeds.
[0057]
Then, in this case, as shown in FIG. 3, the speaker device 100 is installed such that the surface s3
is an installation surface of the speaker device in contact with a reference surface such as a floor
or desk near the viewer.
That is, in this case, as shown in FIG. 3, the speaker device 100 is placed horizontally.
Thus, the installation surface of the speaker device is a surface of the speaker device that is in
contact with the surface (reference surface) on which the speaker is installed when the speaker
device is installed.
[0058]
And in this embodiment, the angle between the installation surface s3 of the speaker device 100
and the sound emission surface s1 is an acute angle, and the arrow shows in FIG. 3 when the
surface s3 is the installation surface. As described above, the sound emission direction of the
sound emitted from the sound emission surface s1 of the speaker device 100 is the obliquely
upward direction from the reference surface, and is the direction with the viewer's ear (the
direction of the viewer's head).
Thereby, even when the speaker device is installed near the viewer, the sound emitted from the
speaker device 100 can be favorably listened to.
[0059]
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Further, the power on / off switch 11, the volume control knob 21, and the mode selection
switches 31, 32, 33, 34 as operation means are the sides facing the surface s3 which has become
the installation surface, and the surfaces s3 and s2 And are provided at the top of the formed
part. Therefore, the pressing direction of the mode switching switches 31, 32, 33, 34 becomes a
direction orthogonal to the surface s3 which has become the installation surface, and the speaker
device 100 falls or moves even if each mode switching switch is pressed. There is no such thing
as Therefore, it is possible to stably and easily operate the mode switching switch to perform
mode switching stably.
[0060]
Further, in the speaker device 100 according to this embodiment, the volume control knob 21 is
configured to adjust the volume of the sound to be emitted by rotating the speaker device 100 in
the longitudinal direction, for example. Then, the amount adjustment knob 21 is turned by the
user in the longitudinal direction of the speaker device 100 while being slightly pressed.
[0061]
Therefore, when the volume control knob 21 is operated, the user's force is applied to the
speaker device 100 in the direction orthogonal to the surface s3 and in the longitudinal direction
of the housing, but also in this case, the speaker device There is no chance for the 100 to fall or
move. Therefore, even in the case of operating the volume control knob 21 for rotating
operation, it is possible to stably and easily adjust the volume by operating this stably.
[0062]
Next, an aspect in which the speaker device 100 is used at a position slightly away from the
viewer will be described. For example, when viewing a Japanese drama program, it is not
necessary to change the speech speed of the sound emitted from the speaker device 100, and
when the speech speed of the sound may be constant at all times, as shown in FIG. The speaker
device 100 connected to, for example, a headphone plug of the television receiver 200 is
installed on the television receiver side, not immediately on the viewer side, such as right next to
the television receiver 200.
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[0063]
In this case, as described above, the speaker device 100 is placed vertically with the surface b of
the speaker device 100 provided with the installation legs b1, b2 and b3 as the installation
surface. As described above, since each angle formed between the surface b of the speaker device
100 and the sound emitting surface s1 is a right angle, in this case, the sound emitted from the
sound emitting surface s1 of the speaker device 100 The sound emission direction is the
direction indicated by the arrow in FIG.
[0064]
That is, as shown in FIG. 4, when the speaker 100 is installed at a position slightly away from the
viewer, the sound emission direction of the sound emitted from the speaker device 100 is the
direction facing the television receiver 200 The direction in which the viewer who will be located
slightly away from the speaker device 100 can be set. As a result, even if the speaker device 100
is installed at a position slightly away from the viewer, the viewer can well listen to the sound
emitted from the speaker device 100.
[0065]
5 and 6 show the release of the sound emitted from the sound emitting surface s1 of the speaker
device by changing the installation surface of the speaker device 100 in contact with a reference
surface such as a floor or desk on which the speaker device 100 is installed. It is a figure for
demonstrating that a sound direction changes. 5 and 6, when the speaker device 100 is installed
on a reference surface K such as a floor or a desk, it is an extension direction of the sound
emitting surface s1 and is a direction parallel to the reference surface K It is a figure which
shows the case where it sees from the direction which sees a sound surface from the side.
[0066]
FIG. 5 shows the case where the speaker apparatus 100 is placed vertically on a reference
surface K such as a floor or desk, that is, as in the case shown in FIG. It is a figure which shows
the case where the speaker apparatus 100 is installed so that it may become the surface b of a
housing | casing 100. FIG.
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[0067]
As described above, since the surface b of the speaker device and the sound emitting surface s1
are orthogonal to each other, the sound emitting surface s1 and the reference surface K can be
obtained by using the surface b of the speaker device as an installation surface. The angle of the
angle formed is right angle as shown in FIG.
In this case, the main sound emission direction of the sound emitted from the sound emission
surface s1 is made to be substantially parallel to the reference plane K as shown by the arrow in
FIG.
[0068]
Therefore, when the speaker device 100 is installed as shown in FIG. 5, if the listener is in the
direction opposite to the sound emitting surface of the speaker device 100, the position slightly
away from the speaker device 100 is the speaker device Even if it becomes the listening position
of the sound from 100, the sound emission direction of the sound from the speaker device 100
becomes the direction with the listener's ear, and the listener emits the sound from the sound
emission surface s1 of the speaker device 100. It is possible to listen well to the sound being
played.
[0069]
6 shows the installation surface of the speaker device 100 in contact with the reference surface K
when the speaker device 100 is placed horizontally on the reference surface K such as a floor or
a desk, that is, as shown in FIG. It is a figure which shows the case where the speaker apparatus
100 is installed so that it may become surface s3 of the housing | casing of the speaker
apparatus 100. FIG.
[0070]
As described above, the housing of the speaker device 100 is in the shape of a triangular prism,
and by setting the surface s3 of the housing of the speaker device 100 as the installation surface,
the sound emitting surface s1 and the reference surface K The angle of the formed angle is an
acute angle as shown by the angle θ in FIG.
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In this case, the sound emission direction of the sound emitted from the sound emission surface
s1 is slightly upward with respect to the reference plane K, as indicated by an arrow in FIG.
[0071]
Therefore, when the speaker device 100 is installed as shown in FIG. 6, even if the speaker device
100 is installed in the immediate vicinity of the listener, the sound emission direction is the
listener's ear. It can be in the direction (diagonally upward direction from the reference surface).
Therefore, the sound emission direction of the sound from the speaker device 100 is in the
direction of the listener's ear, and the sound to be emitted from the sound emission surface s1 of
the speaker device 100 can be favorably listened to.
[0072]
As described above, in the speaker device 100 according to this embodiment, the surface b (first
surface) and the surface s3 (second surface) of the housing of the speaker device 100 are set to
be installation surfaces. . And, when the surface b is an installation surface, this is the surface
where the angle formed by the installation surface, ie, the reference surface is a right angle (first
angle), and when the surface s3 is an installation surface The speakers SPL and SPR are attached
to the inside of the speaker device 100 such that the sound emission surface is a surface s1
which is a surface having an acute angle (second angle) with the installation surface, ie, the
reference surface. .
[0073]
Thus, as described with reference to FIGS. 5 and 6, when the speaker device 100 is installed on a
reference surface such as a floor or a desk, the installation surface of the speaker device 100 in
contact with the reference surface is changed. The angle of the sound emitting surface can be
changed so that the sound emitting direction of the voice always points in a direction toward the
user's ear.
[0074]
As a result, even when the speaker device 100 is used by placing it near the user or when it is
used by placing the speaker device 100 a little away from the user, the user can install the
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speaker device 100 The direction of sound emission of the sound emitted from the speaker
device 100 can be set as the direction in which the user's ear is present only by changing the
installation surface of the speaker device 100 without spending time and effort in devising a
method. .
[0075]
Therefore, even when the speaker device 100 is used in the vicinity of the user and used while it
is used while being placed slightly away from the user, the speaker device 100 emits noise even
in the case of failure. To be heard well.
[0076]
In addition, since various operation means are provided at the top facing the surface s3, when
the speaker device 100 is used in close proximity to the user, the side s3 is the installation
surface, and the speaker device 100 is horizontal. For example, even when hearing learning in
English, the speaker is installed frequently, the mode switching switches 31, 32, 33, 34 are
frequently operated to switch the speech speed of the audio signal frequently. The device does
not fall over or move.
[0077]
That is, the mode can be switched easily and reliably by operating the mode switch stably.
Also, when operating the power on / off switch or the volume control knob, it is possible to stably
and easily and reliably perform power on / off and volume control by operating the switch.
[0078]
In the above-described embodiment, the case where the two surfaces (surface b and surface s3)
of the casing of the speaker device 100 substantially in the shape of a triangular prism are set as
the installation surfaces has been described as an example.
However, the installation surface is not limited to the two surfaces of the surface b and the
surface s3.
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For example, the surface a facing the surface b may be an installation surface, or the surface s2
may be an installation surface.
Even in these cases, the sound emitting surface can be the surface s1.
[0079]
Moreover, in the above-mentioned embodiment, although the case where the case of a speaker
apparatus was made into the shape of a substantially triangular prism was made into an example
and demonstrated, it does not restrict to this. For example, the present invention can be applied
to a speaker device having a housing of various polyhedrons formed by a plurality of faces, such
as pentagonal pillars and hexagonal pillars,.
[0080]
In this case, it is not necessary for the surface serving as the installation surface and the sound
emitting surface to be always adjacent, such as a triangular prism, and the surface that will form
a different angle with the reference surface by changing the installation surface. A speaker may
be provided to make the sound emission surface. Therefore, the angle between the reference
surface and the sound emitting surface is not limited to the case where the first angle is a right
angle and the second angle is an acute angle.
[0081]
In short, when the speaker device is used in different usage modes as described with reference to
FIGS. 3 and 4, for example, the usage mode by changing the installation surface of the speaker
device according to the usage mode The sound emission surface may be provided such that the
direction in which the listener's ear is located is the sound emission direction of the sound
emitted from the speaker device.
[0082]
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In the mode switching switch or the like, when the casing of the speaker device is the mounting
surface in the above-described embodiment, the speaker device falls or moves even if the switch
or the like is operated. It was provided on the top opposite to the irregular surface s3.
However, according to the shape of the housing, it may of course be provided on the surface
opposite to the installation surface.
[0083]
Of course, an adjustment knob for sound quality may be provided as the operation means.
Further, although the speaker apparatus according to the above-described embodiment has been
described as corresponding to the two-channel stereo for each left and right channel, the present
invention is not limited to this. The present invention can be applied to a speaker apparatus
having only one speaker.
[0084]
Moreover, the speaker apparatus mentioned above was demonstrated as what is connected and
used for a television receiver. However, it is not limited to this. The present invention can be
applied to various types of speaker devices that can be connected to various audio devices and
audio / visual devices and that may be used in different usage modes.
[0085]
As described above, according to the present invention, the housing of the polyhedral speaker
device is provided with a plurality of surfaces capable of being the installation surface, and the
release of sound can be achieved by changing the installation surface according to the use mode.
You can change the sound direction. Thereby, the emitted sound from the speaker device can
always be favorably listened to by changing the installation surface according to the usage mode.
[0086]
Also, in the case where the speaker device is installed at a position where the listener's hand
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reaches, even when the operation means provided in the speaker device is frequently operated,
the operation means can be stably provided without the speaker device falling down. By
operating it, it is possible to easily and reliably input an intended instruction to the speaker
device.
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