JP2008182452

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DESCRIPTION JP2008182452
To provide a speaker system in which generation of vibration is suppressed. A speaker system
100 includes a speaker unit 112 attached to a housing 110, a speaker unit 122 attached to a
housing 120, a flange portion 112a of the speaker unit 112, and a flange portion 122a of the
speaker unit 122. And fixed bars 130a and 130b coupled thereto. [Selected figure] Figure 1
スピーカシステム
[0001]
The present invention relates to a loudspeaker system, and more particularly to a loudspeaker
system having two loudspeaker units.
[0002]
When sound is output from a speaker system having one speaker unit, a reaction for driving the
diaphragm of the speaker unit is added to the entire speaker system.
Therefore, in order to reduce the influence of the reaction, it is conceivable to make the entire
speaker system heavier. However, according to this configuration, depending on the weight of
the speaker system itself, there arises a problem that the installation location can not be easily
changed.
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[0003]
As for the speaker system, for example, Japanese Utility Model Laid-Open Publication No. 62203598 (Patent Document 1) discloses a speaker system which can be easily installed with a
small floor area.
[0004]
Moreover, Unexamined-Japanese-Patent No. 2002-10383 (patent document 2) is disclosing the
speaker system which can enjoy natural music at any position.
[0005]
Further, Utility Model Registration No. 3003654 (Patent Document 3) discloses a speakerequipped lighting device in which a speaker is built in the upper and lower intermediate portions
of a columnar cylinder provided with a lighting fixture.
[0006]
Furthermore, Japanese Patent Application Laid-Open No. 2002-305788 (Patent Document 4)
discloses a speaker device capable of obtaining reproduced sound rich in presence without
compromising the stereo image by suppressing the influence of reflection.
JP-A-62-203598 JP-A-2002-10383 Utility model registration No. 3003654 JP-A-2002-305788
[0007]
However, according to the techniques disclosed in the above-mentioned respective publications,
the respective speaker units are separately formed, and there may be a case where the influence
by the reaction can not be prevented.
[0008]
The present invention has been made to solve the above-mentioned problems, and an object
thereof is to provide a speaker system capable of preventing the influence of the reaction due to
the sound output of the speaker unit.
[0009]
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Another object is to provide a speaker system capable of suppressing the occurrence of vibration
due to the output of sound.
[0010]
In order to solve the above problems, a speaker system according to one aspect of the present
invention comprises a first speaker unit having a first flange portion, a second speaker unit
having a second flange portion, and a first speaker unit. A plurality of shaft members connecting
the flange portion and the second flange portion are provided.
The audio output characteristics of the first speaker unit and the audio output characteristics of
the second speaker unit are the same.
The first flange portion and the second flange portion are coupled by respective shaft members
such that the sound output portion of the first speaker unit and the sound output portion of the
second speaker unit face each other.
[0011]
A speaker system according to another aspect of the present invention includes a first speaker
unit, a second speaker unit, and a plurality of shaft members coupling the first speaker unit and
the second speaker unit.
The first speaker unit and the second speaker unit are coupled by respective axial members such
that the sound output unit of the first speaker unit and the sound output unit of the second
speaker unit face each other.
[0012]
Preferably, in the speaker system, the audio output characteristic of the first speaker unit and the
audio output characteristic of the second speaker unit are the same.
[0013]
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Preferably, the first speaker unit has a first flange portion.
The second speaker unit has a second flange portion.
Each first end of each shaft member is coupled to the first flange portion.
Each second end of each shaft member is coupled to the second flange portion.
[0014]
Preferably, the loudspeaker system further comprises a reflective member disposed between the
first loudspeaker unit and the second loudspeaker unit and coupled to the first loudspeaker unit
and the second loudspeaker unit.
[0015]
Preferably, the speaker system further includes a reflecting member disposed between the first
speaker unit and the second speaker unit and coupled to each shaft member.
[0016]
Preferably, the reflecting member includes a rotating body.
The rotation axis of the rotating body coincides with an axis connecting the center of the first
speaker unit and the center of the second speaker unit.
[0017]
According to the present invention, there is provided a speaker system capable of preventing the
influence of reaction due to the sound output of the speaker unit.
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Further, according to the speaker system of the present invention, the generation of vibration
due to the output of sound is suppressed. Further, according to the speaker system of the present
invention, even if there are a plurality of sound output units, sound can be output as if it were
output from one sound source.
[0018]
Hereinafter, embodiments of the present invention will be described with reference to the
drawings. In the following description, the same components are denoted by the same reference
numerals. Their names and functions are also the same. Therefore, detailed description about
them will not be repeated.
[0019]
First Embodiment A first embodiment of the present invention will be described with reference to
FIGS. 1 and 2. FIG. 1 is a diagram showing a cross section of a speaker system 100 according to
the present embodiment. The speaker system 100 includes housings 110 and 120, speaker units
112 and 122, and fixing bars 130a and 130b. A flange portion 112 a is formed on an outer
peripheral portion of the audio output portion of the speaker unit 112. Similarly, a flange portion
122 a is formed on the outer peripheral portion of the audio output portion of the speaker unit
122.
[0020]
One end of the fixing bar 130 a is attached to the speaker unit 112. More specifically, the fixing
bar 130a is coupled to the flanges 112a and 122a. For example, the inside of the shaft of the
fixing bar 130a has a groove, and is fixed by the bolt 140a from the back surface of the flange
portion 112a (that is, the inside of the housing 110). Similarly, the inside of the shaft at the other
end of the fixing bar 130a is also grooved, and the coupling is performed by a bolt 141a
penetrating from the back surface of the flange portion 122a (that is, the inside of the housing
120). Similarly, both ends of the fixing bar 130b are fixed to the speaker units 112 and 122,
respectively.
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[0021]
The speaker units 112 and 122 have the same specifications. Here, the specification is, for
example, a characteristic known about the operation characteristic of the speaker, such as the
output (w) and the output characteristic value. The speaker units 112 and 122 are one-way
speakers in one aspect, but may be configured as two-way or three-way speaker units in other
aspects. In this case, the speaker system is arranged such that the centers of the speaker units
coincide with the centers of the opposing speaker units.
[0022]
FIG. 2 is a diagram showing the speaker unit 100 shown in FIG. 1 from the direction A. As shown
in FIG. On one surface of the housing 110 of the speaker unit 100, the speaker unit 112 and the
fixing bar are coupled by bolts. Specifically, the bolts 140a, 140b, 140c and 140d respectively
penetrate the housing 110 and are attached to the respective fixing bars (for example, the fixing
bars 130a and 130b). As apparent from FIG. 2, when the speaker unit 112 outputs a sound in
such a state, the sound is emitted from the center direction of the speaker unit 112 to the
outside.
[0023]
As described above, according to the speaker system 100 according to the first embodiment of
the present invention, the speaker units 112 and 122 are fixed bars in the flange portions 112 a
and 122 a so that the respective audio output portions face each other. 130a, 130b, 130c and
130d. In this way, the speaker units 112 and 122 generate each vibration in the opposite
direction by the output of sound. Therefore, the vibration of the entire speaker system 100 is
suppressed by canceling the phases of the respective vibrations.
[0024]
And, since the speaker units 112 and 122 are arranged such that the output parts of the sound
are opposed to each other, the speaker system 100 generates the sound from one point (that is,
the center line passing through the central axes of the speaker units 112 and 122). Will emit.
Thereby, the sounds emitted from the two sound sources can be put together and output.
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[0025]
Second Embodiment A speaker unit 300 according to a second embodiment of the present
invention will be described with reference to FIGS. 3 and 4. FIG. 3 is a diagram showing a cross
section of the speaker system 300. As shown in FIG. The speaker system 300 includes, in
addition to the speaker units 112 and 122, a reflecting member 310 and fixing bars 320a, 320b,
320c and 320d. As in the case shown in FIG. 1, the speaker units 112 and 122 are attached to a
housing (not shown). The number of fixed bars is not limited to the number clarified from FIG.
[0026]
The material of the reflective member 310 is resin, wood, metal or the like, but other materials
may be used. In other words, the material of the reflective member 310 may be the same as or
different from the material of the housing 110.
[0027]
The material of the fixing bars 320a, 320b, 320c, 320d is resin, wood, metal or the like, but
other materials may be used. In other words, the material of the reflective member 310 may be
the same as or different from the material of the housing 110.
[0028]
The fixing bar 320 a couples the speaker unit 112 and the reflecting member 310. One end of
the fixing bar 320a has a screw thread and is coupled in a "screw hole" provided on the surface
of the reflecting member 310 so as to correspond to the screw groove. In addition, in another
aspect, the fixing bar 320 a may be coupled as a fitting to a fitting hole provided on the surface
of the reflecting member 310.
[0029]
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The fixing bar 320 a and the speaker unit 112 are fixed at the flange portion 112 a by bolts as in
the first embodiment. Fixing between the fixing bar 320b and the speaker unit 112 and between
the fixing bar 320b and the reflecting member 310 is performed in the same manner as the
fixing bar 320a.
[0030]
The fixing bar 320 c couples the speaker unit 122 and the reflecting member 310. One end of
the fixing bar 320c has a screw thread and is coupled at a "threaded hole" provided on the
surface of the reflecting member 310 so as to correspond to the screw groove. At the other end
of the fixing bar 320c, bolt holes are formed therein. This end is coupled by a bolt (not shown)
which penetrates from the back surface (inside of the housing) of the flange portion 122 a of the
speaker unit 122. The manner of attachment of the fixing bar 320d to the reflecting member
310 and the speaker unit 122 is the same as that of the fixing bar 320c.
[0031]
Note that in another aspect, the fixing bars 320a and 320c may be realized by a single bar
material. In this case, in order to fix the position of the reflection member 310 in the bar
material, a stopper may be attached at a predetermined position on the bar material to prevent
the movement of the reflection member 310. The stopper is realized, for example, by rubber or
other resin having a certain resistance value to the bar material.
[0032]
FIG. 4 is an external view showing the reflecting member 310 from diagonally above. The
reflective member 310 is formed as a rotating body. For example, the reflecting member 310 is
realized as a rotating body having the long side of the isosceles triangle as a rotation axis, in
other words, two cones having the same shape joined at each bottom surface. Alternatively, in
another aspect, the reflecting member 310 is also realized as a shape combining pyramids having
the same shape. In the surface of the reflection member 310, openings 410 and 420 for
attaching the fixing bars 320a and 320b are formed. The openings 410, 420, in one aspect, are
slotted as described above. In another aspect, the openings 410, 420 are formed as mating holes
having an inner diameter smaller than the outer diameter of the fixed bars 320a, 320b. In this
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case, the tip of the fixing bar 320a is tapered, and when the end is inserted into the opening 410,
the fitting resistance prevents the separation of the fixing bar 320a from the reflecting member
310 after that. Ru.
[0033]
As described above, according to speaker system 300 according to the present embodiment, the
sound emitted from speaker units 112 and 122 is reflected by reflection surfaces 310a, 310b,
310c and 310d formed on the surface of reflection member 310. Be done. The reflected sound is
emitted in the horizontal direction of the speaker system 300, respectively. Thus, the speaker
system 300 having two speaker units can output sound as if it had one sound source.
[0034]
Third Embodiment The third embodiment of the present invention will be described with
reference to FIGS. 5 and 6. FIG. 5 is a diagram showing a cross section of speaker system 500
according to the present embodiment. The speaker system 500 includes speaker units 112 and
122, a reflecting member 510, and fixing bars 520a and 520b.
[0035]
The reflection member 510 is attached to the outside (for example, a flange portion) of the audio
output unit of the speaker units 112 and 122. The reflective surface of the reflective member
510 is directed to the inside of the speaker units 112 and 122. Here, the inside means a space
formed by the audio output units of the speaker units 112 and 122.
[0036]
The fixing bar 520 a fixes the reflecting member 510 and the speaker unit 112. The manner of
attaching the fixing bar 520a to the speaker unit 112 is the same as the manner in the first or
second embodiment. The manner of attachment of the fixing bar 520a and the reflecting member
510 is the same as the manner in the second embodiment.
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[0037]
Similarly, the fixing bar 520 b fixes the reflecting member 510 and the speaker unit 122. The
manner of attachment of the fixing bar 520b and the speaker unit 122 is the same as the manner
in the first or second embodiment. The manner of attachment of the fixing bar 520b and the
reflecting member 510 is the same as the manner in the second embodiment.
[0038]
In such a configuration, the sound emitted from the speaker units 112 and 122 is reflected by
the reflection surface of the reflection member 510 and emitted to the outside of the speaker
system 500. For example, when the speaker system 500 is installed with the X direction shown
in FIG. 5 as the vertical direction, the sound is radiated in the horizontal direction (Y direction). In
this case, the reflection member 510 is attached so as to block one of the audio output portions
of the speaker units 112 and 122, and the reflection surface is directed in the direction in which
the speaker units 112 and 122 face each other. According to the speaker system 500 having
such a configuration, the output direction of the sound is limited to one direction (that is, the Y
direction) by the reflecting member 510, so the speaker system 500 can be closely attached to
the wall of the room .
[0039]
6 is a view from the direction X of the speaker system 500 shown in FIG. On one surface of the
housing of the speaker system 500, the speaker units 112 are attached to the reflecting member
510 and the fixing bar 520a by bolts 620a, 620b, 620c, and 620d at the four corners of the
rectangular flange, respectively. For example, the back surface of the reflecting member 510 is
fixed by bolts 620c and 620d. Further, the fixing bars 520a and other fixing bars shielded by the
fixing bars 520a are fixed by bolts 620a and 620b. Reflecting member 510 according to the
present embodiment is formed, for example, as a pentagonal pillar . The material of the
reflective member 510 is, for example, wood, but may be made of resin or other material.
[0040]
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As described above, according to the speaker system 500 according to the third embodiment of
the present invention, the speaker units 112 and 122 are arranged with reference to the central
axis so that the audio output units face each other. In addition, the speaker units 112 and 122
are coupled by the reflecting member 510. The reflection member 510 has a reflection plate in
the sound output direction, and receives the coupling of the speaker units 112 and 122 on the
back surface.
[0041]
In this way, the generation of vibration by the speaker units 112 and 122 is suppressed. Also, the
output direction of sound is limited to one direction. Thereby, for example, when the speaker
system 500 is installed on the wall of a room, it is possible to realize the output of sound as if
there is one sound source while suppressing the vibration.
[0042]
Here, referring to FIG. 7, a speaker system 700 according to another aspect will be described.
FIG. 7 shows a cross section of speaker system 700. As shown in FIG. The speaker system 700
includes a housing 710 and a fixing bar 720 in addition to the speaker units 112 and 122. The
speaker units 112 and 122 are attached to the housing 710. The back of the speaker unit 112
and the back of the speaker unit 122 are attached by a fixing bar 720. According to this
configuration, when sound is output from the speaker units 112 and 122, vibrations generated
according to the output of sound may overlap at the fixed bar 720 and resonate. In addition, the
casing 710 may vibrate due to the vibration.
[0043]
However, according to the speaker system 100, 300, 500 according to the above-described
present embodiment, since the back surfaces of the speaker units 112, 122 are attached to the
housing as open ends, the vibrations generated according to the output of sound There is no
overlap. In addition, the vibration generated by the audio output is not transmitted to the outside
by the housing.
[0044]
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It should be understood that the embodiments disclosed herein are illustrative and nonrestrictive in every respect. The scope of the present invention is indicated not by the above
description but by the claims, and is intended to include all the modifications within the meaning
and scope equivalent to the claims.
[0045]
The present invention is applicable to a speaker system having a plurality of speaker units.
[0046]
It is a figure showing the section of the speaker system 100 concerning a 1st embodiment of the
present invention.
It is a figure showing the speaker unit 100 from one direction. It is a figure showing the cross
section of the speaker unit 300 which concerns on the 2nd Embodiment of this invention. It is an
external view which represents the reflection member 310 with which the speaker unit 300 is
provided from diagonally upward. It is a figure showing the section of the speaker system 500
concerning a 3rd embodiment of the present invention. FIG. 6 is a diagram showing the speaker
system 500 from one direction. FIG. 16 depicts a cross section of speaker system 700 in
accordance with another aspect.
Explanation of sign
[0047]
100, 300, 500, 700 Speaker system, 110, 120, 710 Housing, 112, 122 Speaker unit, 112a, 122a
Flange, 130a, 130b, 320a, 320b, 320c, 320c, 320d, 520a, 520b, 720 Fixing bar, 140a, 140b,
141a, 141b, 620a, 620b, 620c, 620d bolts, 310, 510 reflective members, 310a, 310b, 310c,
310d reflective surfaces, 410, 420 openings.
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