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JP2005051605

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DESCRIPTION JP2005051605
To use a handle attached to an acoustic device as a bass reflex port. SOLUTION: In an acoustic
device having at least a main body portion provided with a speaker and a handle portion
attached to the main body portion, an internal space is formed in the handle portion and a sound
leakage hole is formed in a required portion. Is formed, and the internal space of the handle
portion is communicated with the speaker back space formed in the main body portion. As a
result, the back surface sound pressure of the speaker can be output in a predetermined phase
state from the sound leakage hole provided in the handle portion, and a bass reflex effect using
the handle portion can be obtained. [Selected figure] Figure 1
Acoustic device
[0001]
The present invention relates to an acoustic device configured to be portable, for example, having
a handle portion.
[0002]
For example, a speaker integrated player / recorder in which a recording / reproducing device
capable of recording or reproducing to media such as a CD (Compact Disc) or a magnetic tape
cassette and a speaker device are integrally formed as an audio device is in widespread use. ing.
Among such player-integrated players / recorders, there is one in which a handle portion is
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attached to a main body portion so as to have portability. And, generally, such a handle portion is
mainly provided with only a function as a handle portion.
[0003]
The following patent documents describe a configuration in which such handle portions are
provided with functions other than the handle portion. JP 11-152144 A
[0004]
The handle unit attached to the player / recorder as described above is a component that
occupies a relatively large volume in the device, but since only the function as a handle is given
as described above, it is usually other than when carrying the device In particular, it had no use,
and its volume was not used effectively. From this, it can be said that giving the above-mentioned
handle part another function is preferable in terms of effective utilization of the volume of the
handle part.
[0005]
Therefore, in the present invention, in view of the above problems, the acoustic device is
configured as follows. That is, the acoustic device of the present invention is an acoustic device
having at least a main body portion provided with a speaker and a handle portion attached to the
main body portion, wherein an internal space is formed in the handle portion, A sound leakage
hole is formed in a required portion, and the internal space of the handle portion is in
communication with the speaker rear space formed in the main body portion.
[0006]
As described above, the sound pressure at the back surface of the speaker is output in a
predetermined phase state from the sound leakage hole provided in the handle portion by the
communication of the speaker back space with the internal space of the handle portion. Is
possible. That is, at this time, a so-called bass reflex (bass reflex) effect can be obtained.
Therefore, according to the present invention, the handle portion can be effectively used as a
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bass reflex port.
[0007]
Further, at this time, the bass reflex effect can be adjusted by providing a communication control
mechanism which shuts off or changes the communication area between the speaker rear space
and the internal space of the handle portion.
[0008]
Further, at this time, if the handle portion is rotatably attached, and the communication between
the speaker rear space and the internal space of the handle portion is cut off or the
communication area is changed in accordance with the rotation, the handle It is possible to adjust
the bass reflex effect by a simple operation of rotating the unit.
[0009]
Hereinafter, one of the best modes for carrying out the invention (hereinafter, referred to as an
embodiment) will be described.
1 and 2 are views illustrating the appearance of the acoustic device 1 according to the
embodiment, FIG. 1 is a front view of the acoustic device 1, and FIG. 2 shows the acoustic device
1 in FIG. It is a side view at the time of seeing from the arrow A direction.
In FIG. 1, the acoustic device 1 in this case is provided with a handle 5 as illustrated, and is
configured to be portable by a user, for example. The portion other than the handle 5 in the
acoustic device 1 is a main body portion 2, and the main body portion 2 can record or reproduce
information on media such as a CD (Compact Disc) or a magnetic tape cassette, for example. -A
site necessary for sound reproduction, such as a reproduction device, is formed. Further, on the
front surface of the main body 2, a user interface such as an operation button for user operation
is formed. Furthermore, for the main body 2, as shown in the figure, an L-channel speaker (L
speaker) 2 and an R-channel speaker (R speaker) 3 are provided symmetrically, and stereo
reproduction is possible.
[0010]
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Further, in this case, in the main body portion 2, the back surface portion of the L speaker 3 is
hollowed as shown by oblique lines in the drawing, and the first speaker back surface space 2a is
formed. Further, in the main body portion 2, the back surface portion of the R speaker 4 is also
hollowed out to form a second speaker back surface space 2b which is also indicated by
hatching. In FIGS. 1 and 2, for convenience of explanation, the first speaker back space 2a
formed in the back of the L speaker 3 and the second speaker back formed in the back of the R
speaker 4 The space 2b is shown in a transparent manner. Similarly, in these figures, the first
handle side internal space 5a and the second handle side internal space 5b, and the handle 5 and
the main body portion 2 which are respectively formed inside the handle 5 described below The
attachment part is also shown transparent.
[0011]
In FIG. 1, the handle 5 is hollowed inside, and the central portion in the inside is partitioned as
indicated by B in the figure, so that the first handle-side internal space indicated by oblique lines
in the figure 5a and the 2nd handle side internal space 5b are formed left-right symmetrically. As
described later, the first handle side internal space 5a communicates with the above-described
speaker rear space 2a by the handle side attachment portion 8 of the handle 5 being attached to
the handle attachment portion 9 on the main body 2 side. It will be possible. Further, the second
handle side internal space 5b is also attached to the handle attachment portion 11 by the handle
side attachment portion 10 shown in the figure, so that the second handle side internal space 5b
can communicate with the speaker rear space 2b. Further, in this case, depending on the fact that
the handle side attachment parts 8 and 10 are attached to the handle attachment parts 9 and 11
on the main body 2 side, as described later, the handle 5 is indicated by a broken arrow in FIG. In
this way, it can be turned in the front-rear direction indicated by the solid arrow in the figure.
[0012]
In addition, in the handle 5 on the side of the first handle-side internal space 5a, a position facing
the front in a state where the handle 5 is raised from the rear to the front as described above is
shown in FIG. A bass reflex hole 6 as shown is formed. Also, similarly to the second handle side
internal space 5b side, a bass reflex hole 7 is formed at a position facing the front in a state
where the handle 5 is raised.
[0013]
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Here, in the present embodiment, the handle side attachment portions 8 and 10 described above
and the handle attachment portions 9 and 11 on the main body 2 side are configured as follows,
according to the rotation state of the handle 5. Thus, a communication control mechanism is
realized which varies the area of the communication portion between the speaker back space 5a
and the handle side internal space 5a and the area of the communication portion between the
speaker back space 5b and the handle side internal space 5b.
[0014]
FIG. 3 is a view for explaining an attachment state of the handle side attachment portion 10
shown in FIG. 1 and the handle attachment portion 11 on the main body 2 side.
In addition, in this figure, the attachment state in the state by which the handle 5 was knocked
backward most shall be shown. As illustrated, the handle-side mounting portion 10 formed to the
end of the handle 5 in this case is, for example, substantially circular. Then, in such a handle side
attachment portion 10, the attachment surface with the main body side is cut off for
approximately 1⁄4 of the circumference as shown in the figure, and the handle side
communication port 10a having a substantially sector shape as shown is formed. It is done.
Further, at the central portion of the handle side attachment portion 10, an insertion port 10b for
inserting the shaft portion 11b of the handle attachment portion 11 shown is formed.
[0015]
Although the handle attachment portion 11 is shown as a single body for convenience in this
figure, it is actually formed or fixed integrally with the main body portion 2. The handle
mounting portion 11 is also, for example, substantially circular, and the substantially circular
portion is cut along substantially 1⁄4 of the circumference to form a substantially sector-shaped
main body side communication port 11 a. It should be noted that, for the purpose of
confirmation, the main body side communication port 11a is in contact with the second speaker
back space 2b shown in FIG.
[0016]
Here, as the positional relationship between the main body side communication port 11a formed
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in this manner and the handle side communication port 10a formed in the handle side mounting
portion 10, the handle 5 is the last as shown in FIG. In a state where the main body side
communication port 11a and the handle side communication port 10a do not overlap, for
example, on the same semicircle in the handle side mounting portion 10 having a substantially
circular shape in a state in which it is turned down. . Further, at the same time, in the state where
the handle 5 is thus turned to the rear, the main body side communication port 11a is formed on
the front side of the handle 5 in the rotation direction side than the handle side communication
port 10a. It shall be done.
[0017]
Further, a shaft portion 11b projecting in the direction of the handle 5 is formed at the central
portion of the handle attachment portion 11, and the shaft portion 11b is inserted through the
insertion port 10b of the handle attachment portion 10 described above. Thus, the handle 5 can
be turned about the shaft portion 11b. That is, the handle 5 is attached to the main body 2 so
that the handle 5 can be turned as shown by the broken arrow in FIG.
[0018]
Although only the attachment state of the handle side attachment portion 10 and the handle
attachment portion 11 on the main body 2 side is described in this drawing, the attachment of
the other handle side attachment portion 8 to the handle attachment portion 9 on the main body
2 side Since the state is the same as in this case, the description by the illustration here is
omitted.
[0019]
4 is a side view of the acoustic device 1 as viewed in the direction of arrow A shown in FIG. 1 as
in FIG. 2 above, and in this case, in particular, only the attachment portion between the main
body 2 and the handle 5 Extracted and shown.
And in this FIG. 4, the mode of the rotation from the back to the frontmost part of the handle 5 is
shown by FIG. 4 (a)-FIG.4 (c). First, in FIG. 4A, a state of the attachment portion between the main
body 2 and the handle 5 in a state in which the handle 5 is turned backward is shown. In the
state shown in FIG. 4 (a), as described in FIG. 3 above, the second side speaker is configured so
that the main body side communication port 11a and the handle side communication port 10a
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do not overlap. The back space 2b and the second handle side internal space 5b are not in
communication with each other.
[0020]
When the handle 5 is raised forward as shown in FIG. 4B from the state shown in FIG. 4A, the
handle side communication port 10a is opposed to the main body side communication port 11a.
It is made to overlap. That is, in this case, as described in FIG. 3 above, the main body side
communication port 11a is formed on the front side of the handle 5 in the turning direction, so
the handle 5 is thus By raising it forward, the handle side communication port 10a is to be
superimposed on the main body side communication port 11a. Then, in the region where the
handle side communication port 10a overlaps the main body side communication port 11a in
this manner, a state in which the second speaker back space 2b and the second handle side
internal space 5b communicate with each other can be obtained. become.
[0021]
Furthermore, as shown in FIG. 4C, when the handle 5 is raised to the frontmost position, the
handle side communication port 10a completely overlaps the main body side communication
port 11a, and the second speaker back surface space A state in which 2b and the second handle
side internal space 5b communicate with each other in the largest area can be obtained. Also in
this case, according to the change in the rotational state of the handle 5 shown in FIGS. 4 (a) to 4
(c), even on the side of one handle side attachment 8 and the handle attachment 9 The same
communication state as described above can be obtained for the first speaker rear space 2a and
the first handle-side internal space 5a, so the description by the illustration here is omitted.
[0022]
Thus, in the present embodiment, the area of the communication portion between the speaker
back spaces 2a and 2b and the handle side internal spaces 5a and 5b can be varied according to
the turning state of the handle 5. At this time, the back surface sound pressure of the L speaker 3
and the R speaker 4 is determined by the communication between the speaker back spaces 2 a
and 2 b and the handle side internal spaces 5 a and 5 b according to the turning state of the
handle 5. The signal is output to the outside in a predetermined phase state through the
respective speaker rear space, the communication port, the handle-side internal space, and the
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bass reflex hole. That is, with this, it is possible to obtain a bass reflex effect using the handle 5,
and as a result, it is possible to effectively use the handle 5 as a bass reflex port.
[0023]
Further, at this time, as described above, the area of the communication portion between the
speaker back space 2a, 2b and the handle side internal space 5a, 5b can be varied according to
the turning state of the handle 5. Therefore, it is possible to adjust the bass reflex effect. Further,
at this time, when the handle 5 is completely turned backward as shown in FIG. 4A, the
communication between the handle side internal space and the speaker rear space can be cut off,
and the bass reflex effect is obtained. It can also be turned off.
[0024]
Further, at this time, as described in FIG. 1 above, by providing each of the bass reflex holes 6
and 7 in the front position when the handle 5 is raised to the front, a more bass reflex effect can
be obtained. It will be possible.
[0025]
Here, in the above embodiment, the present invention has been described as an example in which
the recording / reproducing apparatus capable of recording or reproducing on a CD or a
magnetic tape and the speaker are integrally formed. For example, as shown in FIG. 5 below, the
present invention can be applied to a single speaker device.
First, also in the sound device shown in FIG. 5, the speaker back surface is hollowed to form a
speaker back space on the side of the speaker device 20 shown in the figure. Then, as the handle
21 in this case, the inside is made hollow, and a bass reflex hole 21a as shown in the figure as a
sound penetration hole is formed in a required portion of the surface portion. Then, the handle
21 is attached to the speaker device 20 so that the speaker rear space and the handle side
internal space can communicate with each other. Thus, a handle 21 as a handle can be provided
to the speaker device 20, and at the same time, a bass reflex effect using the handle 21 can be
obtained.
[0026]
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In the embodiment, an example in which the handle 5 is attached rotatably is described, but in
the present invention, a configuration in which the handle 5 is fixed so as not to be rotatable can
be considered.
[0027]
Further, instead of changing the area of the communication portion between the speaker back
space and the handle side internal space according to the turning state of the handle 5 as in the
above embodiment, the attachment portion between the main body 2 and the handle 5
Alternatively, a slider or the like for opening and closing the communication portion may be
separately provided, and the area of the communication portion between the speaker back space
and the handle side internal space may be varied.
In addition, the communication state between the speaker rear space and the handle side internal
space may simply be shut off or not.
[0028]
It is a front view of the acoustic device as an embodiment in the present invention. It is a side
view of an acoustic device of an embodiment. It is a figure for demonstrating the attachment
state of the handle part and the main-body part in the audio equipment of embodiment. It is a
side view in an acoustic device of an embodiment, and is the figure which extracted and showed
especially the attachment part of a handle part and a main-body part. It is the figure which
showed the other structural example of embodiment.
Explanation of sign
[0029]
DESCRIPTION OF SYMBOLS 1 sound apparatus, 2 main-body part, 2a 1st speaker back space, 2b
2nd speaker back space, 3 L speaker, 4 R speaker, 5 steering wheel, 5a 1st handle side internal
space, 5b 2nd handle side Internal space 6, 7 Bass reflex hole 8, 10 Handle side mounting part 9,
11 Handle mounting part 10a Handle side communication port 10b insertion port 11a Main
body side communication port 11b Shaft part
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