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JP2012244314

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This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
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DESCRIPTION JP2012244314
An object of the present invention is to develop a thin speaker system which can be mounted on
a thin video apparatus such as a plasma television or a liquid crystal television in a speaker
system for video equipment. SOLUTION: A speaker arranged in a line at least two in a straight
line at a central portion, a front panel provided opposite to a diaphragm of the speaker, a rear
panel provided in the opposite direction to the front panel, and a front surface It consists of a
side panel where the panel and the back panel are combined, and a partition is provided to
separate the individual speakers, and in the direction of the front panel, it is emitted in the
direction perpendicular to the amplitude direction of the speaker diaphragm The slit is formed in
the direction perpendicular to the front panel, and in the direction of the rear panel, the slit is
formed in the direction perpendicular to the rear panel so as to be emitted in the direction
opposite to the sound emission direction. The speaker system is configured to be separated so
that the emitted sounds do not mix in the direction of the front panel and the direction of the
back panel. [Selected figure] Figure 1
Speaker system, electronic device using the same, mobile device
[0001]
The present invention relates to a speaker system used for various video devices and audio
devices.
[0002]
In recent years, in the video industry, in television receivers (hereinafter referred to as television),
as represented by plasma televisions and liquid crystal televisions, thinning of these video
devices and space saving are required.
03-05-2019
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[0003]
In the past, when CRTs with large depth dimensions were mainstream, even if a CRT is placed on
the front of the TV, a large space can be secured on the back of the CRT, and this large space can
be used as a speaker It was possible to mount the system.
[0004]
That is, in the case of a speaker system mounted on a CRT, if the area of the front of the
television can be reduced, the depth dimension of the back of the CRT, which is formed to be
narrowed as it goes to the rear, is used. It was possible to mount a large volume speaker system.
[0005]
Therefore, as long as the shape of the front portion is a slim type speaker system, there is no
problem in mounting even if the depth dimension is large.
[0006]
However, in the case of a plasma television or a liquid crystal television, not only the shape of the
display module itself is thin, but there is no need to provide an extra space on the back surface,
so the volume in the depth direction can be increased when mounting the speaker system. It has
become very difficult to utilize
[0007]
These requirements ensure that the area of the plasma panel unit and the liquid crystal panel
unit that display the image is as large as possible to enhance the visibility as a video device such
as a television, and reduce the area and volume of other parts as much as possible. Another
reason is the improvement of the product value by increasing the size, thickness and space
saving.
[0008]
Accordingly, the market demand for downsizing and thinning of the speaker systems mounted on
these video devices is inevitable at present.
[0009]
On the other hand, the performance requirements for the speaker system installed in these video
03-05-2019
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equipments have been further enhanced so that these audio signals can be reproduced without
waste as the performance of the audio signals is enhanced such as digitization of the input
source. In addition to performance, high input resistance, high quality, and high reliability have
been required.
[0010]
Furthermore, with the intensification of the global price competition of imaging devices such as
plasma TVs and liquid crystal televisions, severe market requirements have been made for cost
reduction.
[0011]
From the above background, it is necessary to satisfy the market demand for downsizing and
thinning, and the high performance, high input resistance, high quality and high reliability of the
speaker system, and also for satisfying the cost demand. There is an urgent need to develop a
speaker system that can
[0012]
Hereinafter, a video apparatus which is a conventional electronic apparatus and a speaker system
mounted on the video apparatus will be described with reference to the drawings.
[0013]
FIG. 7 is an external view of a video apparatus which is a conventional electronic apparatus, and
FIG. 8 is a cross-sectional view of the speaker system.
[0014]
As shown in FIG. 7, in a conventional speaker system centered on video equipment such as a
plasma television and a liquid crystal television, the speaker system 37 is vertically disposed with
the front direction facing the both side surfaces of the plasma panel and the liquid crystal panel.
The configuration was heavily used.
[0015]
In this case, in accordance with the shape of the vertically long speaker system, a cone-shaped
slim-shaped speaker 35 which is a vertically long speaker is often used inside the speaker system
37.
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[0016]
FIG. 8 is a longitudinal sectional view of a conventional speaker system, and a cone-shaped slimshaped speaker 35 is provided from the inside to the front panel 31 of the enclosure 34
composed of the front panel 31, the back panel 32, and the side panel. A speaker cord is
connected to the terminal, and the speaker cord is internally routed by an air wiring to construct
a speaker system 37.
[0017]
The shape of the speaker system 37 is formed in a vertically long shape so that the video
equipment such as plasma television and liquid crystal television can be miniaturized even if the
speaker system 37 is disposed on both sides of the plasma panel and liquid crystal panel with the
front direction facing. In order to be adapted to the vertically elongated shape of the speaker
system 37, a cone-shaped slim-shaped speaker 35, which is a vertically elongated speaker, is
used as the speaker.
[0018]
Here, the aspect ratio, which is the aspect ratio of the cone-shaped slim-shaped speaker 35, is
about 4 or less, and about 5 even if the aspect ratio is high.
[0019]
The configuration of the cone-shaped slim-shaped speaker 35 is such that an inner-magnet-type
magnetic circuit 44 configured by sandwiching the magnetized magnet 41 by the upper plate 42
and the yoke 43 is coupled to the lower portion of the vertically-long slim-shaped frame 46 A
cone-shaped slim-shaped diaphragm 47 is bonded to the peripheral portion of the slim-shaped
frame 46, and the voice coil 48 for driving the cone-shaped slim-shaped diaphragm 47 is coupled
to the voice coil 48. The damper 49 holds the center of the damper 49 so as to be fitted into the
magnetic gap 45 of the magnetic circuit 44, and the dust cap 50 is bonded to the front surface of
the cone-shaped slim-shaped diaphragm 47.
[0020]
In addition, as a configuration of another vertically-long speaker system, there is also a tone zone
type speaker system in which a speaker system is configured using a large number of circular
speakers without using a slim speaker.
[0021]
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Furthermore, for the purpose of achieving thinning and simultaneously achieving high input
resistance, there are also loudspeaker systems that use a large number of loudspeakers that use a
thinned diaphragm instead of a cone-shaped diaphragm. Was.
[0022]
In addition, as prior art document information regarding the invention of this application, for
example, Patent Document 1, Patent Document 2 and Patent Document 3 are known.
[0023]
JP-A-4-154298 JP-A-8-251686 JP-A 2005-79809
[0024]
However, the conventional speaker system is configured to realize size reduction, thickness
reduction, and space saving, which are market requirements to a certain extent, but further size
reduction and thickness reduction to improve product value. The conventional speaker system
has already reached its limit when space saving is required.
[0025]
The cause of this will be described below.
[0026]
The speaker system is formed in a vertically long shape for space saving, and the shape of the
speaker is a vertically long cone-shaped slim shape according to this shape, but this speaker is a
slim-shaped cone-shaped diaphragm The center is driven by a voice coil.
[0027]
However, in recent years when high-inch television is becoming mainstream as the size of the
display module, the viewer's viewing position is often viewed far from the television, and even in
this case, the volume is sufficient for the viewer It is necessary to secure the
[0028]
Therefore, as the size of the display module increases, the speaker system needs a large service
area to secure a sufficient volume for the viewer, and a large input is required for the speaker
system to secure a large sound pressure. Become.
03-05-2019
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[0029]
As described above, there is a need to secure a certain strength of the diaphragm because there
is a demand on the market as a large demand for input resistance. Therefore, in order to ensure
the strength of the diaphragm, the diaphragm needs to have a somewhat large overall height It
becomes.
[0030]
The reason for this is that only the central portion of the elongated slim-shaped cone-shaped
diaphragm is driven by the voice coil, and the buckling strength of the diaphragm is improved,
and in addition, both ends in the lengthwise direction of the diaphragm The phase in the
amplitude of the diaphragm is also in phase with that of the voice coil to prevent the occurrence
of distortion and to ensure stable sound pressure frequency characteristics.
[0031]
As described above, in order to ensure the strength of the diaphragm, there is a constraint that
the overall height dimension of the diaphragm can not be lowered, which makes it impossible to
meet the market demand for a thinner speaker system. It had a problem.
[0032]
In addition, even if it is not possible to satisfy the market requirement of thinning in the
conventional speaker system, if it is attempted to lower the full height dimension of the
diaphragm, the strength of the diaphragm will be insufficient. The phase at both ends and the
phase of the voice coil do not become the same phase, which induces the occurrence of
distortion, deterioration of the sound pressure frequency characteristic, and the occurrence of
the quality danger of the occurrence of buckling of the diaphragm.
[0033]
The present invention solves the above-mentioned problems, and it is a speaker system that
realizes market requirements such as downsizing, thinning and space saving, while achieving
both high input resistance, high quality and high reliability, and further cost. It is an object of the
present invention to provide a speaker system which can satisfy even the dynamic requirements.
[0034]
In order to solve the above problems, a speaker system according to the present invention
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includes a speaker disposed at a central portion, a front panel provided facing the diaphragm of
the speaker, and a rear panel provided in the opposite direction to the front panel. , And a side
panel in which a front panel and a back panel are combined, in which two or more speakers are
arranged in a straight line and provided with a partition for separating the individual speakers, in
the direction of the front panel, A slit is formed in the direction perpendicular to the front panel
so as to be emitted in the direction perpendicular to the amplitude direction of the diaphragm of
the speaker, and in the direction of the back panel so as to be emitted in the opposite direction
Slits are formed in the direction perpendicular to the back panel, and they are separated so that
the emitted sound does not mix in the direction of the front panel of the speaker diaphragm and
the direction of the back panel. It is obtained by configuring the over mosquito system.
[0035]
With such a configuration, small-sized speakers are arranged in a straight line, and in the
direction of the front panel, the direction perpendicular to the front panel is emitted so as to be
emitted in the direction perpendicular to the amplitude direction of the diaphragm of the
speaker. By forming the slits in the speaker system, it is possible to provide a speaker system
which has a slim shape and realizes downsizing and thinning.
[0036]
Then, in the direction of the rear panel, a slit is formed in the direction perpendicular to the rear
panel so that the sound is emitted in the direction opposite to the sound emission direction of the
front panel, and the sound emitted to the front of the diaphragm of the speaker And sound
emitted to the back side can be separated reliably, and sound with an antiphase component from
the back side can be prevented from turning around to the front side and adversely affecting,
thus achieving good sound quality Can.
[0037]
Furthermore, by using a large number of small-sized speakers whose cost is low due to mass
production effects, it is possible to provide a speaker system that can satisfy cost requirements.
[0038]
With the above configuration, in the speaker system of the present invention, two or more smallsized speakers are arranged in a straight line, and a partition for partitioning the individual
speakers is provided, and in the direction of the front panel Since the slits are formed in the
direction perpendicular to the front panel so as to be emitted in the direction perpendicular to
the amplitude direction of the diaphragm, it is possible to obtain a speaker system which has a
slim shape and which is miniaturized and thinned.
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[0039]
In addition, in the direction of the back panel, a slit is formed in the direction perpendicular to
the back panel so that the sound is emitted in the direction opposite to the sound emission
direction of the front panel, so the sound emitted to the front of the diaphragm of the speaker
And sound emitted to the back side can be separated reliably, and sound with an antiphase
component from the back side can be prevented from turning around to the front side and
adversely affecting, thus achieving good sound quality Can.
[0040]
And, since the partitions for separating the individual speakers are provided, it is possible to
realize good sound quality and characteristics without mutual interference between the other
speakers and adversely affecting the sound quality and characteristics. it can.
[0041]
Furthermore, by using a large number of small-sized speakers whose cost is low due to mass
production effects, it is possible to provide a speaker system that can satisfy cost requirements.
[0042]
As described above, the present invention is a speaker system that achieves slimness, which is a
market demand for compactness, and realizes miniaturization and thinning, while simultaneously
achieving good sound quality, which is a market demand for high performance. The speaker
system has a great effect of being able to provide a speaker system which can satisfy both the
cost and the cost.
[0043]
The perspective view of the speaker system of the present invention The exploded perspective
view of the speaker system of the present invention The sectional view of the speaker system of
the present invention The external view of the electronic device of the present invention The
external view of the electronic device of the present invention Cross section view of the
conventional electronic device cross section view of the conventional speaker system
[0044]
Hereinafter, embodiments of the present invention will be described using the drawings.
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[0045]
First Embodiment Hereinafter, the present invention will be described using a first embodiment.
[0046]
The present invention is a speaker system disposed along a side of a display module of a plasma
television or a liquid crystal television that is a video device, and a case where eight speakers are
arranged as a number of speakers attached to the speaker system will be described.
[0047]
FIG. 1 is a perspective view of the speaker system of the present invention, FIG. 2 is an exploded
perspective view of a main part of the speaker system of the present invention, and FIG. 3 is a
cross-sectional view of the speaker system of the present invention in the short direction.
[0048]
Furthermore, FIG. 4 and FIG. 5 arrange the speaker system of the present invention along the
edge of the display module along the side of the display module around the display module of
plasma television and liquid crystal television which are recent thin video devices. It is an
external view mounted so that the slit which makes it sound and emits sound may be turned to
the front.
[0049]
As shown in FIGS. 1 to 5, the speaker system 7 includes a front panel 1 provided opposite to the
diaphragm of the speaker 5, a back panel 2 provided in the opposite direction to the front panel
1, and a front panel 1. And the back panel 2 are combined, and the speaker 5 arranged and
attached in a row to eight at the central portion of these.
[0050]
Then, eight speakers 5 are arranged in a straight line, and a partition 5 a is provided to separate
the individual speakers 5, and in the direction of the front panel 1, in the direction perpendicular
to the amplitude direction of the diaphragm 27 of the speakers 5. The front slit 1a is formed in
the direction perpendicular to the front panel 1 so as to emit sound, and in the direction of the
rear panel 2, the rear surface in the direction perpendicular to the rear panel 2 is emitted so as to
be emitted in the opposite direction to the sound emission direction. The slits 2a are formed, and
the speaker system 7 is configured so as to be reliably separated in the direction of the front
panel 1 of the diaphragm 27 of the speaker 5 and the direction of the back panel 2 so that the
03-05-2019
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emitted sounds are not mixed. doing.
[0051]
That is, the sound is emitted in the directions indicated by the arrows in opposite directions in
FIGS. 1 and 3, and the speaker system 7 is also separated and configured so as not to mix the
emitted sounds. .
[0052]
With such a configuration, the front slit 1a is formed in the direction perpendicular to the front
panel 1 so that the sound is emitted in the direction perpendicular to the amplitude direction of
the diaphragm 27 of the speaker 5 in the direction of the front panel 1. The speaker system can
be made slim and has a reduced size and thickness.
[0053]
Then, in the direction of the back panel 2, the back slit 2 a is formed in a direction perpendicular
to the back panel 2 so as to be emitted in the direction opposite to the sound emission direction
of the front panel 1. To ensure that the sound emitted to the front of the 27 and the sound
emitted to the back are separated internally to prevent the sound having an antiphase
component from the back from turning to the front and having an adverse effect Good sound
quality can be realized.
[0054]
This is because the sound emitted from the front slit 1a of the front panel 1 is the display
direction of the display module when the speaker system 7 is installed along the side of the
display module of the plasma television or liquid crystal television. Since the sound emitted in the
same direction as that of the rear slit 2a of the rear panel 2 is emitted in the opposite direction to
the sound emitted from the front slit 1a, the plasma television or liquid crystal television The
sound is emitted to the inside of the set and taken into the interior, and it is not mixed with the
sound emitted from the front slit 1a, and hence no adverse effect is caused.
[0055]
Even if the internal structure of the set of plasma television and liquid crystal television is not a
completely sealed structure but has a breathable structure, the sounds emitted from the front slit
1a and the rear slit 2a are in opposite directions. Since the sound is emitted to the rear side, it is
possible to greatly reduce the adverse effect of the sound having the antiphase component from
the rear side turning to the front side.
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[0056]
Furthermore, since the partitions 5a for partitioning the individual speakers 5 are provided, the
speakers mutually interfere with each other to achieve good sound quality and characteristics
without adversely affecting the sound quality and characteristics. be able to.
[0057]
As described above, in the speaker system 7, the front slit 1a capable of emitting sound in the
direction perpendicular to the amplitude direction of the diaphragm 27 of the speaker 5 is placed
along the side of the display module of the plasma television or liquid crystal television. Since the
arrangement is made such that sound can be emitted in the same direction as the display
direction, it is possible to further miniaturize the set of plasma television, liquid crystal television,
and the like.
[0058]
In particular, the loudspeaker system 7 has a longitudinal dimension in the longitudinal direction
of about 180 mm, including the attachment means to the set, while a lateral dimension in the
lateral direction of about 12 mm. Since the outer dimension in the thickness direction, that is, the
total height can be about 8 mm, the plasma television and the liquid crystal television can be
further enhanced by arranging the slits provided in the thickness direction along the sides of the
display module. And so on can be realized.
[0059]
Furthermore, by using a large number of small-sized speakers 5 whose cost is low due to mass
production effects, it is possible to provide a speaker system that can satisfy cost requirements.
[0060]
The speaker system 7 is provided with wiring means 6 for connecting the speakers 5.
[0061]
Here, the speaker system 7 is configured by arranging eight speakers 5 in a straight line, and the
back panel 2 is configured by providing printed wiring as the wiring means 6.
[0062]
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In particular, by using printed wiring, wiring can be performed with a very small thickness, and
the presence of the speaker cord can be eliminated compared to the conventional air wiring in
which the speaker cord is present, and at least the speaker cord Can be made thinner.
[0063]
The frequency band that can be reproduced by this speaker system is mainly middle to high, and
if a low band is required, a speaker system exclusively for low-frequency reproduction is
separately provided and incorporated in a plasma television or liquid crystal television as video
equipment. This makes it possible to reproduce the entire frequency band sufficiently.
[0064]
The speaker system dedicated to low frequency reproduction does not have to be provided on
the front of the video equipment as in the speaker system dedicated to middle to high frequency
reproduction by utilizing the wide directivity of the low frequency, and an empty space inside the
video equipment can be used. By effectively utilizing it and mounting it, the effects can be
sufficiently exhibited, and in particular, the miniaturization of the video equipment is not
hindered.
[0065]
Of course, in low-inch video equipment and the like, it is also possible to use without providing a
speaker system exclusively for low-frequency reproduction.
[0066]
Here, the details will be described below.
[0067]
The speaker 5 attached to the speaker system 7 uses a type of small-sized micro speaker, which
is usually used for a mobile phone or the like.
[0068]
Since a large number of speakers 5 of this type called microspeakers are produced by a
dedicated automated mass-production facility for use in mobile phones, the cost per unit is
extremely high compared to conventional video speakers due to the mass-production effect. The
cost of the speaker system can be reduced even if it is used in large numbers.
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[0069]
Next, the configuration of the speaker 5 which is the micro speaker will be described.
[0070]
As shown in FIG. 3, a magnetic circuit 24 formed by sandwiching a magnetized magnet 21 by an
upper plate 22 and a yoke 23 is combined with a frame 26 made of resin, and a peripheral
portion of the frame 26 is flat. The diaphragm 27 is bonded, and the voice coil 28 for driving the
flat diaphragm 27 is coupled to the vicinity of the outer periphery of the flat diaphragm 27, and
the voice coil 28 is a magnetic gap of the magnetic circuit 24. It is combined and configured to fit
into 25.
[0071]
The configuration of the speaker 5, which is a microspeaker, can reduce the total height size
because there is no damper, as compared with the conventional image speaker, and additionally,
the diaphragm is not a cone but a flat diaphragm. Therefore, the overall height can be further
reduced.
[0072]
Since the speakers 5 which are microspeakers are smaller in shape and smaller in overall height
than conventional speakers for video, a large number of speakers 5 can be realized because they
can realize only a small input resistance. The required input withstand is realized by using.
[0073]
Further, by setting the size of the voice coil 28 as large as possible and coupling it in the vicinity
of the outer peripheral portion of the diaphragm 27, the required heat resistance is realized by
making the heat dissipation of the voice coil 28 excellent.
[0074]
Then, by connecting the voice coil 28 in the vicinity of the outer peripheral portion of the
diaphragm 27, the phase at the amplitudes of both end portions in the longitudinal direction of
the diaphragm 27 can be made the same phase as the voice coil 28, thereby reducing distortion.
Thus, stable sound pressure frequency characteristics can be realized.
[0075]
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13
Further, since the edge for supporting the diaphragm 27 on the peripheral portion of the frame
26 is integrally formed by inserting the diaphragm 27 with a material having high flexibility
different from that of the diaphragm 27, the input resistance is enhanced. In addition, wide band
reproduction can be realized in the direction of expanding the low band.
[0076]
Here, a case where eight speakers are arranged in a row as the number of speakers to be
attached has been described, but the present invention is not limited to this, and two, four, six,
ten, twelve, twelve, sixteen, twenty, It is possible to set it freely, such as thirty.
[0077]
The minimum number of units to be arranged and arranged linearly may be at least two.
[0078]
As the number of speakers to be attached to this speaker system, it is set in consideration of the
allowable dimensions of the mounted television, the input resistance required for the speaker
system, and the quantity that can ensure the sound pressure level to satisfy the required volume.
do it.
[0079]
As described above, by arranging and arranging the speakers in a straight line, it is possible to
realize dimensions that can be easily mounted on both sides of a display module of a plasma
television or a liquid crystal television as a speaker system.
[0080]
Here, the external shape of the speaker is a rectangular shaped speaker, but the small
microspeaker used in this speaker system is also currently used along with the downsizing and
downsizing of information communication terminals such as mobile phones. From the
conventional circular and square shapes, rectangular, track and oval shapes are becoming
mainstream, and the cost aspect of microspeakers of these shapes can also be obtained
inexpensively due to the mass production effect.
[0081]
As described above, as the type of speaker used in the speaker system, the case of using a smallsized micro-speaker of the electrodynamic type has been described, but the invention is not
03-05-2019
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limited to this. Any type of speaker may be used, and similar effects can be obtained.
[0082]
Next, the configuration of the speaker system 7 will be described.
[0083]
The speaker system 7 includes a front panel 1 provided opposite to the diaphragm of the speaker
5, a rear panel 2 provided in the opposite direction to the front panel 1, and a side panel
coupling the front panel 1 and the rear panel 2 3 and a speaker 5 disposed and attached at the
center of these components.
[0084]
Then, the speakers 5 are arranged linearly and provided with partitions 5a for separating the
individual speakers 5. In the direction of the front panel 1, the sound is emitted in a direction
perpendicular to the amplitude direction of the diaphragm 27 of the speakers 5. To form a front
slit 1a in a direction perpendicular to the front panel 1, and in the direction of the back panel 2,
the back slit 2a in a direction perpendicular to the back panel 2 so as to be emitted in the
direction opposite to the sound emission direction. The speaker system 7 is configured so as to
be reliably separated internally in the direction of the front panel 1 of the diaphragm 27 of the
speaker 5 and the direction of the back panel 2 so that the emitted sounds are not mixed. .
[0085]
With such a configuration, the front slit 1a is formed in the direction perpendicular to the front
panel 1 so that the sound is emitted in the direction perpendicular to the amplitude direction of
the diaphragm 27 of the speaker 5 in the direction of the front panel 1. The speaker system can
be made slim and has a reduced size and thickness.
[0086]
Then, in the direction of the back panel 2, the back slit 2 a is formed in a direction perpendicular
to the back panel 2 so as to be emitted in the direction opposite to the sound emission direction
of the front panel 1. To ensure that the sound emitted to the front of the 27 and the sound
emitted to the back are separated internally to prevent the sound having an antiphase
component from the back from turning to the front and having an adverse effect Good sound
quality can be realized.
03-05-2019
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[0087]
In particular, in the speaker system 7, the front slit 1a capable of emitting sound in the direction
perpendicular to the amplitude direction of the diaphragm 27 of the speaker 5 is disposed along
the side of the display module of the plasma television or liquid crystal television. Further
miniaturization can be realized.
[0088]
Thus, even if the slit is formed to emit sound in the direction perpendicular to the amplitude
direction of the diaphragm of the speaker, the diaphragm of the speaker 5 of the present
invention has a planar shape instead of the conventional cone shape. Since the diaphragm is
used, the internal shape of the slit is simplified, and good sound quality and sound pressure
frequency characteristics are realized without occurrence of an anterior chamber effect that
causes sound quality deterioration due to diffraction or phase difference. Can.
[0089]
Then, as a method of separating the sound emitted on the front surface of the diaphragm of the
speaker and the sound emitted on the back surface, as shown in FIG. By combining a shaped
speaker in a straight line, and further combining the side panel 3 on the outer periphery of the
entire combined speaker, the sound emitted on the front and the sound emitted on the back are
separated. doing.
[0090]
At this time, by using an adhesive or a sealing agent in combination for the purpose of
eliminating air leakage, air leakage can be further eliminated and good sound quality can be
realized.
[0091]
In addition, when the external shape of the speaker is a track shape or an oval shape, air leak can
be easily eliminated by further providing a baffle plate for attaching the speaker, and good sound
quality can be obtained. It can be realized.
[0092]
That is, by attaching a track-shaped or elliptical speaker to the baffle plate and connecting the
baffle plate to the side panel 3, the sound emitted to the front and the sound emitted to the back
can be reliably separated. be able to.
03-05-2019
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[0093]
And also in this case, by using an adhesive and a sealing agent in combination for the purpose of
eliminating air leak, it is possible to further eliminate air leak and to realize good sound quality.
[0094]
Furthermore, since the partitions 5a for partitioning the individual speakers 5 are provided, the
speakers mutually interfere with each other to achieve good sound quality and characteristics
without adversely affecting the sound quality and characteristics. be able to.
[0095]
The respective speakers 5 can be completely divided by forming the partitions 5 a on both sides
of the front slit 1 a side of the front panel 1 and the rear slit 2 a side of the rear panel 2.
[0096]
When the back panel 2 is formed of a printed circuit board, the partition 5 a may be formed only
on the front panel 1.
[0097]
Then, by bringing the frame 26 of the speaker 5 into close contact with the partition 5 a
provided on the front panel 1, it is possible to completely separate the individual speakers 5.
[0098]
On the other hand, in this case, since the partition 5a is not provided in the direction of the back
panel, the frame 26 is substituted as a partition, and a sound emission hole is provided on the
side surface of the frame 26 to reverse the sound emitted on the front surface. The same effect
can be obtained by emitting sound in the direction.
[0099]
Furthermore, as another method, a partition having a size equal to or greater than the full height
of the speaker 5 may be provided in either one of the front panel 1 or the back panel 2 and the
speaker 5 may be inserted into this partition.
[0100]
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About this partition 5a, although it is desirable from a viewpoint of the mutual interference
prevention of speakers that each partition 5a is provided in all the individual speakers 5 as the
above-mentioned composition, it is not limited to this but 2 Improve cost performance by
providing individual partitions as a set, reducing partitions on the back panel 2 side, or
eliminating some or all of them according to the desired sound quality and characteristics. Can.
[0101]
Furthermore, in FIG. 3, a gap is provided between the yoke 23 of the speaker 5 and the back
panel 2, but the yoke 23 and the back panel 2 are closely attached and coupled to each other. It
is good also as composition which provides a hole and emits sound on the back side.
[0102]
With this configuration, the gap between the yoke 23 of the speaker 5 and the back panel 2 and
the partition on the back panel 2 can be eliminated, and further thinning and cost reduction can
be realized.
[0103]
Further, the front panel 1 is extended to the side to constitute the side panel 3, and the front
panel 1 and the side panel 3 are integrally formed of the same material, and the side panel 3 is
used as a guide for the speaker 5 May be configured to improve the production efficiency.
[0104]
That is, as shown in FIG. 3, the outer dimensions of the frame of the speaker 5 and the inner
diameters of the two side panels 3 are set to be substantially the same size and fit, without
rattling. High precision positioning can be realized.
[0105]
With this configuration, the front panel 1 and the two side panels 3 are simultaneously
integrated with the same material and configured by injection molding, so that the front panel 1
and the two side panels 3 are instantaneously highly accurate. It can be assembled, and the
improvement of production efficiency and the reduction of price can be realized.
[0106]
And, even when eight speakers 5 are positioned on the assembly of the front panel 1 and the two
side panels 3, positioning can be performed efficiently by the effect of the guide, and even when
03-05-2019
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the speakers 5 are attached It is possible to realize the improvement of efficiency and the
reduction of price.
[0107]
In addition, since the front panel 1 and the two side panels 3 are integrated, the quality such as
generation of flicker between the front panel 1 and the two side panels 3, air leakage, and
detachment Defects do not occur, and high strength and stable quality and reliability can be
realized.
[0108]
Although the case where the side panel and the front panel are integrally formed of the same
material has been described above, the side panel and the back panel may be integrally formed of
the same material. Is obtained.
[0109]
Alternatively, one side panel and the front panel may be integrally formed of the same material,
and the other side panel and the back panel may be integrally formed of the same material. An
effect is obtained.
[0110]
Furthermore, all panels except one side may be integrally formed of the same material, and after
eight speakers 5 are inserted into this, the last one side may be connected, and in this case as
well, the same effect is more effective. In addition, the productivity can be improved.
[0111]
Then, after eight speakers 5 are positioned, wiring means 6 for connecting eight speakers 5 is
provided to constitute a speaker system 7.
[0112]
Here, printed wiring is provided as wiring means 6 on the back panel 2.
[0113]
Of course, each speaker 5 may be connected to the back panel 2 with a lead wire which is a
speaker cord instead of using a printed wiring, but in this case, a space for connecting lead wires
03-05-2019
19
and connection is required. It takes time, and it is more advantageous to use printed wiring from
the viewpoint of thinning and productivity.
[0114]
Furthermore, if this back panel 2 is configured with a printed wiring board, a so-called printed
board, the printed circuit board on which the wiring pattern of the speaker is printed can be
easily produced and obtained, thus eliminating the need to separately prepare the back panel. It
is possible to further improve productivity and reduce costs.
[0115]
Compared to the conventional speaker system, the number of screws for mounting the speaker
can be reduced, and the number of production steps by screwing can be reduced, so that a large
price reduction can be realized.
[0116]
Furthermore, in the case where the yoke 23 and the back panel 2 are brought into close contact
and joined with an adhesive, double-sided tape, adhesive or the like, and a sound emission hole is
provided in the side portion of the frame 26 to emit sound on the back side. Can realize a great
price reduction as well as thinning.
[0117]
Then, the speaker 5 is provided with a terminal having a spring property, and the electrical
connection between the speaker 5 and the printed wiring provided on the back panel 2 is made
by pressing the terminal having the spring property of the speaker 5 to contact the printed
wiring. A more stable electrical connection can be realized by configuring the electrical
connection at the same time as fixing 5.
[0118]
Thus, by using a terminal having a spring property, a speaker system which is acoustically stable
is realized, such as prevention of unnecessary resonance of the back panel 2 not only by stable
electrical connection but also by the effect of being constantly pressurized. can do.
[0119]
Next, the external shape and dimensions of the speaker and the speaker system will be described.
03-05-2019
20
[0120]
As for the external shape of the speaker system, it is desirable to have an elongated rectangular
shape on the premise that the speaker system is disposed on both sides and upper and lower
sides of a display module of a plasma television or liquid crystal television that is a video device.
[0121]
And, a small-sized micro-speaker called a small-sized micro-speaker that is currently used widely
for mobile phones etc. has a horizontal dimension of about 9 mm and a vertical dimension of
about 16 mm when the outer shape is a rectangular shape. A micro speaker having a direction,
that is, a total height dimension of about 3 mm is mainstream.
[0122]
As described above, if the external dimension of the speaker in the lateral direction which is the
short side is 12 mm or less and the external dimension in the longitudinal direction which is the
longitudinal direction is 13 mm or more, a large number of loudspeakers are arranged in a row It
is convenient to construct a rectangular shaped speaker system.
[0123]
When a speaker system is configured using this general-purpose microspeaker, if eight speakers
are used and arranged in a straight line in the longitudinal direction, the lateral direction of the
external dimensions of the speaker system is used. One lateral dimension is about 12 mm, which
can be less than 15 mm.
[0124]
This is because the lateral dimension in the lateral direction of the speaker system is 1.25 times
or more than 1.5 times the lateral dimension in the lateral direction of the speaker.
[0125]
The external dimensions in the longitudinal direction, which is the longitudinal direction, are
about 180 mm, including the attachment means for the set, and a speaker system of 150 mm or
more is obtained.
[0126]
03-05-2019
21
Here, the attachment means to the set is provided at both ends in the longitudinal direction of
the speaker system, and is a hole or a notch.
[0127]
On the other hand, of the external dimensions of the speaker system, the external dimension in
the thickness direction, that is, the total height, can be about 8 mm and can be 10 mm or less.
[0128]
With the above configuration, the aspect ratio of the external dimension in the longitudinal
direction, which is the longitudinal direction of the external dimensions of the speaker system, to
the external dimension in the lateral direction, which is the lateral direction, can be 10 or more. It
is possible to realize a speaker system that can be thinned with a high aspect ratio.
[0129]
Then, as described above, eight small microspeakers are used and arranged in a straight line in
the longitudinal direction, and the front surface can be emitted in the direction perpendicular to
the amplitude direction of the diaphragm of the speaker. By forming the slits and arranging the
front slits in the front direction, it is possible to realize a reduction in size and thickness by slim
shape.
[0130]
Also, in the direction of the back panel, the back slit is formed to be able to emit sound in the
direction opposite to the sound emission direction of the front panel, so that the sound emitted to
the front of the diaphragm of the speaker and the sound emitted to the back The sound pressure
level can be prevented because the sound with the opposite phase component from the back can
be reliably separated from the sound and the sound can be prevented from turning around the
front and adversely affecting the sound pressure level. Good sound quality can be realized.
[0131]
Furthermore, by covering the slit with a dustproof net, fine dust and dirt can enter the inside of
the slit to prevent malfunction such as generation of abnormal sound, thereby improving quality
and reliability. be able to.
[0132]
In addition, since the air permeability can be adjusted by selecting the aperture ratio of this
03-05-2019
22
dustproof net, the sound quality and sound pressure frequency characteristics of the speaker
system can be freely adjusted by adjusting the acoustic load given to the speaker. Can.
[0133]
In particular, by applying an acoustic load to the sound emitted on the back of the diaphragm of
the speaker to adjust the sound quality and sound pressure frequency characteristics of the
speaker system, it is possible to adjust the sound quality with high accuracy, from the back It is
possible to further prevent the sound having the anti-phase component from turning to the front
and adversely affecting the sound, so that it is possible to exert great effects such as the
reduction of the sound pressure level and the reduction of distortion.
[0134]
And this speaker system can be widely installed in almost all video equipment such as low-inch
size to high-inch size such as plasma television and liquid crystal television, and as the external
dimension of the speaker system, the mounting surface and physical distribution The dimensions
can be optimized in terms of surface, workability, etc.
[0135]
And imaging equipment, such as a plasma television and a liquid crystal television equipped with
this speaker system, can realize thickness reduction, size reduction, and space saving which have
not been achieved conventionally due to thinning of the speaker system.
[0136]
Further, since the speaker system is configured by a series of small-sized speakers, it is possible
to realize a sound quality with high distortion and a high degree of clarity in the middle to high
frequency in terms of sound quality.
[0137]
Furthermore, by separately incorporating a speaker system exclusively for low frequency
reproduction into the video equipment, it becomes possible to satisfactorily reproduce low
frequency.
[0138]
And, by arranging wiring means such as printed wiring on the back panel, it is possible to
eliminate aerial wiring inside the speaker system, to prevent occurrence of abnormal noise such
03-05-2019
23
as flicker, and wiring is easy and reliable. Thus, high input resistance, high quality, and high
reliability can be realized at low cost.
[0139]
Furthermore, by using a large number of small microspeakers whose cost is low due to mass
production effects, it is possible to provide a speaker system that can satisfy cost requirements.
[0140]
And for high-inch video equipment, this speaker system is used not only as a pair on the left and
right, but with this as the minimum unit, a large number of them are arranged in the vertical
direction to adjust the required input resistance and sound pressure level It is good also as a
mounting method to aim at.
[0141]
Although the above description has been made as the elongated rectangular speaker system on
the premise that the display system is disposed on both sides and the upper and lower sides of a
display module of a plasma television or a liquid crystal television which is a video device, it may
be used .
[0142]
The following is based on the premise that it will be installed on a personal computer, a game
machine, an information communication device, etc. that is smaller than the above-mentioned
video equipment, such as a plasma television or a liquid crystal television. It is correspondence
when it is difficult to mount.
[0143]
When two or three speakers are used and arranged in a straight line in the longitudinal direction,
the outer dimension in the lateral direction, which is the short direction of the outer dimensions
of the speaker system, is about 12 mm, and is 15 mm or less can do.
[0144]
The external dimensions in the longitudinal direction, which is the longitudinal direction, are
about 75 mm, including the attachment means to the set, and a speaker system of 50 mm or
more is obtained.
03-05-2019
24
[0145]
With the above configuration, the aspect ratio of the external dimension in the longitudinal
direction, which is the longitudinal direction of the external dimensions of the speaker system,
and the external dimension in the lateral direction, which is the lateral direction, can be 6 or
more. Thus, it is possible to realize a speaker system that can be thinned with a high aspect ratio.
[0146]
As described above, the speaker system in which two or three small microspeakers are used and
linearly arranged in the longitudinal direction is mounted on a small personal computer, a game
machine, an information communication machine, etc. The external dimensions of the speaker
system can be optimized in terms of the mounting surface, the physical distribution surface, the
workability, and the like.
[0147]
Further, in a small personal computer, a game device, an information communication device, and
the like on which the speaker system is mounted, since the speaker system is thinned, it is
possible to realize an unprecedented reduction in thickness, miniaturization, and space saving.
[0148]
Furthermore, these small electronic devices may be mounted not only with the mounting angle of
the slit of the speaker system in the same direction as that of the display module, but also with an
angle in the outward direction, that is, the back direction. .
[0149]
That is, the speaker system is disposed and mounted so that sound can be emitted in a direction
perpendicular to the display direction of the display module which is the image display unit, or
the angle is set between the same direction as the display module and the direction
perpendicular thereto You may.
[0150]
With such a configuration, it is possible to improve the spread of sound, which is a defect specific
to small-sized electronic devices, and to fully exhibit stereo feeling.
[0151]
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25
As described above, the speaker system of the present invention can be applied to an electronic
device having a video display unit such as a television receiver, a personal computer, a game
machine, an information communication device, and the like. By arranging and mounting the
longitudinal direction of the speaker system in the horizontal direction in the horizontal portion,
it is possible to realize downsizing and thinning which are market requirements for compactness.
[0152]
In addition, the longitudinal direction of the speaker system may be disposed laterally in the
upper and lower portions of the outer frame portion of the high-inch image display unit, and in
this case, a pair of each vertically By installing it, stereo reproduction becomes possible.
[0153]
However, only one pair may be mounted on one of the upper and lower sides of the outer
peripheral frame portion of the video display unit.
[0154]
In addition, if necessary, it may be mounted on both the left and right lateral parts and the upper
and lower parts of the outer peripheral frame part of the video display part. With such a
configuration, high input resistance and high sound pressure can be achieved. Leveling can be
realized.
[0155]
By adopting the above configuration, the speaker system of the present invention arranges smallsized speakers in a straight line, and emits the sound in the direction perpendicular to the
amplitude direction of the diaphragm of the speaker in the direction of the front panel. A front
slit is formed in the direction perpendicular to the panel, and by arranging the slit in the front
direction, it is possible to realize downsizing and slimming with a slim shape.
[0156]
Also, in the direction of the back panel, the back slit is formed in the direction perpendicular to
the back panel so that the sound is emitted in the direction opposite to the sound emission
direction of the front panel. The sound pressure level can be obtained by reliably separating the
sound produced and the sound emitted on the back surface, and preventing the sound having an
antiphase component from the back surface from turning on the front surface and adversely
affecting the sound. Low distortion, and good sound quality can be realized.
03-05-2019
26
[0157]
Furthermore, since the partitions for separating the individual speakers are provided, it is
possible to realize good sound quality and characteristics without mutual interference between
the other speakers and adversely affecting the sound quality and characteristics. it can.
[0158]
And, by providing the wiring means in the back panel, it is possible to eliminate the air wiring
inside the speaker system, to prevent the generation of abnormal noise such as a flicker, and to
carry out the wiring easily and surely. It is possible to realize high input resistance, high quality,
high reliability and low price.
[0159]
Furthermore, by using a large number of small-sized speakers whose cost is low due to mass
production effects, it is possible to provide a speaker system that can satisfy cost requirements.
[0160]
With the above configuration, the speaker system of the present invention is a speaker system
that achieves the market demand for compactness and the reduction in size and thickness, but
the high input resistance that is the market demand for high performance. It is possible to
provide a speaker system that can achieve both high quality, high reliability, and can be satisfied
with respect to cost requirements.
[0161]
Second Embodiment Hereinafter, the present invention will be described using a second
embodiment.
[0162]
FIG. 6 shows a cross-sectional view of an automobile 60 which is a mobile device according to an
embodiment of the present invention. The speaker system 7 of the present invention can be used
as a ceiling, an instrument panel, a sun visor, a seat, a rear tray, etc. , And used as part of a car
audio system and a car navigation system.
[0163]
03-05-2019
27
With regard to the position where the speaker system of the present invention is mounted, any
position or part other than the above can be used, such as headrest, armrest, cockpit, mirror,
meter, steering, pillar, door, etc. It may be a position or a part.
[0164]
With this configuration, it is possible to realize downsizing and weight reduction of a mobile
device such as a car equipped with the loudspeaker system by the effects of downsizing, thinning
and downsizing of the loudspeaker system.
[0165]
Also, in terms of sound quality, the clarity of the middle to high range is high, and the sound
quality with less distortion can be realized, and if a separate low-pass reproduction speaker
system is separately provided, good reproduction on the low range is also possible. Become.
[0166]
Furthermore, by providing the wiring means in the back panel, aerial wiring inside the speaker
system is eliminated, wiring is facilitated, abnormal noise such as flicker is prevented, high input
resistance, high quality, high reliability Due to the effect of achieving high quality and low price,
it is possible to realize high quality, high reliability and low price of a mobile device such as a car
equipped with this speaker system.
[0167]
In particular, as an advantage when mounted on a mobile device such as an automobile, there is
a problem with conventional wireless wiring, that is, between the floating wire generated by
vibration when moving the mobile device and the inner wall of the enclosure of the speaker
system. It is possible to exert a great effect of being able to eliminate an abnormal sound such as
a flicker due to contact.
[0168]
Therefore, it is possible to achieve a great effect that the improvement of the fuel consumption
and the improvement of the sound quality of the mobile device such as a car and the like, and the
price reduction, the high quality and the high reliability can be realized.
[0169]
Although the case where the speaker system of the present invention is installed in a car as an
03-05-2019
28
example of the mobile device has been described above, the mobile device is not limited to this,
and may be a mobile device such as a bicycle, a motorcycle, a bus, a train, a ship, or an airplane.
If there is any device, it can be mounted.
[0170]
And, it is possible to achieve a great effect that the improvement of the fuel consumption and the
improvement of the sound quality of the mobile device equipped with the speaker system, and
the price reduction, the high quality and the high reliability can be realized.
[0171]
The speaker system according to the present invention can be applied to a speaker system that
requires downsizing and thinning.
[0172]
DESCRIPTION OF SYMBOLS 1 front panel 1a front slit 2 back panel 2a back slit 3 side panel 5
speaker 5a partition 6 wiring means 7 speaker system 21 magnet 22 top plate 23 yoke 24
magnetic circuit 25 magnetic gap 26 frame 27 diaphragm 28 voice coil 31 front panel 32 Rear
panel 34 Enclosure 35 Speaker 37 Speaker system 41 Magnet 42 Top plate 43 Yoke 44
Magnetic circuit 45 Magnetic gap 46 Frame 47 Diaphragm 48 Voice coil 49 Damper 50 Dust cap
60 Automobile
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