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JPH0698384

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DESCRIPTION JPH0698384
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
speaker device for reproducing sounds such as music, and more particularly to a speaker device
for giving a bodily sensation vibration to a human body.
[0002]
2. Description of the Related Art Generally, as a device for reproducing sound, it is common to
vibrate air with a diaphragm to transmit sound to the tympanic membrane of the ear, but in
addition, a vibrator is brought into contact with the body. There are those that let you experience
the low-pitched range and those that transmit vibration to the body and that transmit the
vibration to the tympanic membrane by the bone to hear the sound.
[0003]
Heretofore, as a vibrating device for an acoustic sense, which imparts a sense of presence by
transmitting vibrations due to deep bass to the body, for example, there is one in which a
vibrating unit or a speaker unit is installed on a backrest or a seat of a chair.
Then, this device transmits the vibration generated by the vibration unit or the speaker unit
connected to the sound device such as an amplifier to the person seated on the chair through the
cushion or air, etc. It is
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[0004]
By the way, the above-mentioned conventional vibration device for acoustic sense of the body
senses the bass part of music or movie sound effect as vibration and can be used in combination
with a normal stereo device, headphones, etc. Was used. That is, the conventional vibration
device is only for giving a sensational vibration, and when actually listening to music etc., not
only a speaker device that reproduces the sound of the high range and the midrange, but also the
bass in addition to the sensational vibration. In addition, in order to hear as a sound that vibrates
the tympanic membrane, a speaker device that reproduces the low tone range is also needed. In
addition, when the above-described conventional vibration device is used, the vibration may be
transmitted as unpleasant noise to people around it.
[0005]
The present invention has been proposed in view of the above circumstances, and the purpose of
the present invention is not only to transmit sound to the human body as vibration but also to
transmit it as a normal sound to vibrate the eardrum of the ear, and It is providing a speaker
device for body sensation sound which does not transmit unpleasant vibration sound to the
surroundings.
[0006]
SUMMARY OF THE INVENTION A speaker device according to the present invention is a speaker
device installed in a chair or the like to experience sound by vibration, comprising: a housing
installed in the chair or the like; The solution to the above problem is provided with a speaker
fitted in a side surface, and a tubular sound guide pipe extending from the housing and
communicating with the inside of the housing.
[0007]
The housing is placed on a seat or back of a chair so that the speaker faces the body of a person
seated on the chair.
Therefore, the vibration generated from the speaker is transmitted to the person sitting on the
chair.
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Further, by arranging the sound guide tube at an appropriate position of the chair, the vibration
generated from the speaker vibrates the air inside the housing, and the vibration is transmitted
as a sound through the sound guide tube, and from the sound guide tube to the chair Reach the
ear of the person who sat down. Therefore, when sitting on a chair, it is possible to experience
both the vibration transmitted from the seat or back of the chair and the sound emitted from the
end of the sound guide tube.
[0008]
Further, around the chair, the sound generated from the surface of the speaker and the sound
emitted from the sound conduction tube are mixed. In this case, since the sound is in reverse
phase on the front and back of the speaker, the sound emitted from the front of the speaker and
the sound radiated from the back through the sound conduction tube mutually cancel each other,
resulting in a chair Noise that leaks around the
[0009]
Embodiments of the present invention will be described hereinbelow with reference to the
drawings. FIG. 1 shows a speaker device A according to this embodiment. And FIG. 2 installs the
speaker apparatus A in flame | frame B 'of the reclining seat B shown in FIG.
[0010]
The speaker device A, as shown in FIG. 1, extends from the housing 1, a housing 2 installed in a
chair or the like, speakers 2 and 2 fitted to one side of the housing 1, and It is mainly composed
of tubular sound guiding pipes 3 and 3 communicating with the inside of the housing 1.
[0011]
The housing is formed into a rectangular parallelepiped appearance by plywood, and the inside
thereof is divided into two compartments 1b and 1b by a partition wall 1a provided at a central
portion.
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The housing 1 has a circular hole (not shown) for installing the speaker 2 formed in each of the
compartments 1b on the front surface thereof, and a circular transmission for attaching the
sound conduction tube 3 on the upper surface thereof. One hole (not shown) is formed in each of
the compartments 1b.
[0012]
The speaker 2 is a well-known horn type speaker and is a woofer for bass. Then, two speakers 2,
2 are fitted in each hole of the housing 1. At this time, the holes are closed by the speakers 2. In
the speaker device A, stereo reproduction can be performed by the two speakers 2 and 2.
[0013]
The sound guiding tubes 3, 3 are tubes made of synthetic resin, and one end thereof is connected
to the housing 1 so as to be inserted into the through hole. In addition, the sound guiding tubes 3
are rotatably connected to the housing 1 around a central axis along the length direction. And
the tip part of the sound guiding tube 3, 3 is bent and formed.
[0014]
Next, the reclining seat B on which the speaker device A is installed will be described. As the
external appearance is shown in FIG. 3, the carriage unit 10 self-propelled by the drive motor by
the drive motor and the sheet main body 20 of a size placed on the carriage unit 10 and on
which a person is laid are mainly used. It is configured.
[0015]
The carriage unit 10 can travel by two traveling wheels 11 (only one is shown in FIG. 2) at the
front and two driving wheels 12 (only one is shown in FIG. 2) at the rear. The speed is controlled
by an electric motor (not shown) for driving the wheel 12, and forward and backward movement
and left / right direction conversion can be performed by a steering mechanism (not shown) for
steering the traveling wheel 11 and the driving wheel 12. ing. The reason why the reclining seat
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B has such a configuration is to move the reclining seat B to a position most suitable for viewing
with respect to the screen when watching a movie with a video playback device or the like. In the
present embodiment, the cover 13 covers the main part of the carriage 10.
[0016]
On the other hand, as shown in FIG. 3, the seat body 20 is provided with the armrests 21 and 21,
and one of the armrests 21 is provided with a table 22 for placing a cup or the like. At the
position where the head is placed, speakers 23 are provided on the left and right, respectively.
The speaker 23 is for high and low frequency ranges, and reproduces music and the like together
with the speaker device A of this embodiment.
[0017]
The frame B 'of the seat body 20 is, as shown in FIG. 2, a seat support plate 24 for a seat, and a
backrest support plate 25 whose one end is rotatably supported by the seat support plate 24. A
head supporting plate 26 whose other end is rotatably supported by the backrest supporting
plate 25 and on which a head is placed; and a first footrest whose one end is rotatably supported
at the pedestal supporting plate 24 A support plate 27 and a second footrest support plate 28
rotatably supported at the other end of the first footrest support plate 27 are mainly configured.
[0018]
And the speaker apparatus A is installed in the said backrest support plate 25 in the state embed
| buried.
The speaker device A is inserted in a state in which the fitted surface of the speakers 2 is exposed
on the surface of the backrest support plate 25 and the ends of the sound guide tubes 3 protrude
on the back side of the backrest support plate 25 It is done.
[0019]
And, while the connecting shafts 29 for connecting the support plates 24 to 28 are incorporated
in the joint portion of the support plates 24 to 28, a control motor (not shown) for changing the
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angle of the support plates to the connection shaft 29 ) Are arranged. In addition, the arm 29a
extended along the side surface of the support plates 24-28 is extended to the edge part of the
connecting shaft 29, and it is being fixed to the side surface of the support plates 24-28. In the
embodiment, the pedestal support plate 24 is pivotably attached to the upper surface of the
carriage 10 via a turntable (not shown) so that the direction can be changed. Further, although
not shown in the drawing, the seat body 20 is provided with a control unit for controlling the
angles of the support plates 24 to 28 and the traveling of the carriage 10. The control unit sends
control signals to motors for rotating the support plates 24 to 28 and a traveling motor provided
to the carriage unit 10, and controls the attitude of the seat body 20 and the traveling of the
carriage unit 10 It is.
[0020]
A cushion (not shown) is provided on the surface of the skeleton formed of the support plates 24
to 28, and a seat cover 20a made of leather or the like is attached via the cushion. The portions
of the speakers 2 and 2 of the speaker device A of the seat body 20 are in a state where the
cushion and the cover 20a are cut out, and the vibration of air generated by the speakers 2 and 2
was seated on the sheet B People are able to feel as vibration on their backs. Further, although
the sound guide tubes 3 and 3 are in a state in which the ends are projected on the back side of
the backrest support plate 25, this means that the backrest support plate 25 and the head
support plate 25 rotate. In order to prevent interference, a flexible tube (not shown) may be
extended from the end of the sound guide tube 3 to the vicinity of the speakers 23.
[0021]
In the human sense, there is not much directivity in the low frequency range, and it is difficult to
identify the sound source. Therefore, it is not necessary to necessarily extend the end of the
sound guiding tube 3, 3 to the vicinity of the ear. That is, it is difficult for a person who listens to
hear the difference in sound due to the difference in the arrangement position of the ends of the
sound guide tubes 3 and 3, therefore, the ends of the sound guide tubes 3 may be arranged
anywhere .
[0022]
At this time, if the end of the sound guide tube 3, 3 is farther from the ear of the person sitting
on the sheet B than the position of the speaker 2, 2 of the speaker device A, as described later,
from the front of the speaker 2, 2. Since the sound of the sound guiding tubes 3 is canceled by
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the squeezing sound, it is necessary that the ends of the sound guiding tubes 3 are closer to the
ear than the speakers 2.
[0023]
Next, the operation of the speaker device A of this embodiment will be described.
The speakers 2, 2 of the speaker device A are for the low frequency band, and are adapted to
reproduce the sound in the low frequency band such as music by the signal from the audio
device (not shown). The vibration is transmitted not as a sound but as a vibration to the back of
the person sitting on the seat B, and can feel the bass as a vibration. Further, the sound generated
by the speakers 2 of the speaker device A is transmitted from the housing 1 to the sound guiding
tubes 3 and 3 and reaches the ears of the person sitting on the sheet B.
[0024]
In addition, the sound generated directly from the front side of the speakers 2 and 2 and the
sound generated on the back side of the speakers 2 and 2 and transmitted through the sound
conduction tubes 3 and 3 from the housing 1 are the front side of the speakers 2 and 2 and Since
the sound is generated from the back side, the phases are opposite to each other. Therefore,
around the sheet B, the sounds cancel each other, the level of the sound is lowered, and the
sound heard around the sheet B is reduced.
[0025]
As in the case of a so-called bass reflex type speaker device, the chassis 1 is a chassis of the bass
reflex type speaker device so that the phase of sound is not reversed between the interior of the
casing and the outlet of the opening of the casing. It comes out of the standard of the internal
volume of the body.
[0026]
As described above, according to the speaker device A of the present embodiment, by extending
the sound guiding tubes 3 and 3 from the housing 1 of the speaker device A for bodily sensation
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vibration, one speaker device A can be used for sensation. While generating vibration, sound can
be generated from the sound guiding tubes 3, 3 extending from the housing 1, and it is necessary
to provide at least a speaker device for bass in addition to the speakers 2, 2 for sensational
vibration. There is no
Therefore, the audio device having the sensation-of-sensation vibration device can be simplified
and its cost can be reduced.
[0027]
In addition, the sound emitted from the front surface of the speakers 2 of the speaker device A
and the sound emitted from the back surface of the speakers 2 2 through the sound guiding
tubes 3 3 are in opposite phase to each other, so Then, they cancel each other, lowering the
sound level, and don't make the surrounding people uncomfortable.
[0028]
In addition, the speaker apparatus A of this invention is not restricted to the said Example,
Specific components, such as a shape, a dimension, and a material of each member, can be
suitably changed in implementation.
For example, although the casing 1 is made of plywood, it may be a synthetic resin or a metal
plate. Also, the sound guiding tube 3 does not have to be a synthetic resin, and may be a metal
tube or the like. Furthermore, the number of sound guiding tubes 3 does not have to be one for
each compartment 1 b. Although the speaker device A is attached to the reclining seat B in the
above embodiment, it may be attached to a chair such as a vehicle or an aircraft or attached to a
bed.
[0029]
Further, in the above embodiment, the speaker 2 of the speaker device A is for the horn type low
frequency band, and in addition to the speaker 2 of the speaker device A, the speaker 23 for high
and middle frequency bands is attached to the sheet B. However, the sound range of the speaker
2 of the speaker device A can be extended from the low range to the high range, the end of the
sound guide tube 3 is provided in the vicinity of the portion supporting the head of the sheet The
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speaker may not be provided. In this case, a person sitting on the seat B will feel a bass region
that is relatively easy to feel as a vibration on the back as a vibration, and can hear the sound
from the bass tube 3 to the treble range from the sound guiding tube 3. Therefore, only the
speaker device A can sense both the sensational vibration and the sound from the low range to
the high range, so that the audio device having the sensation vibration device can be further
simplified, and the cost thereof can be reduced. be able to.
[0030]
FIG. 4 shows another embodiment different from the above embodiment, and the speaker device
C of this embodiment is for the monaural reproduction that the speaker device A is for stereo
reproduction. There is a case 30 installed in a chair or the like, a speaker 2 fitted to one side of
the case 30, and a tubular conductive sound that extends from the case 30 and communicates
with the inside of the case 30. The tubes 3 and 3 are the main components. And it has the same
configuration as the speaker device A except that there is no partition in the housing 30 and
there is only one speaker 2, and it is installed on the sheet B and used . In this case, if the speaker
device A is intended for the low frequency range, as described above, since there is no directivity
of the low frequency in human sense, the same effect as the speaker device A is exhibited. Can.
[0031]
As described above in detail, according to the speaker device of the present invention, not only
the sensational vibration can be generated by the speaker device for bodily sensation vibration,
but also the sound guide tube extended from the housing Can also generate sound, which can
simplify the audio device having the sensation vibration device and reduce the cost.
[0032]
In addition, since the sound emitted from the front of the speaker of the speaker device and the
sound emitted from the back of the speaker through the sound conduction tube are in opposite
phase to each other, these sounds cancel each other around the speaker device. The sound level
around the speaker device can be lowered, and the surrounding people will not be annoyed.
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