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JP2003000343

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This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
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DESCRIPTION JP2003000343
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
rucksack provided with a speaker that creates a sound field in which a rucksack wearer can
naturally hear both the sound from an audio device or the like and environmental noise (ambient
noise). About Suck.
[0002]
[Background Art] With regard to rucksacks, various proposals have been made for improvement
of the material, form, function and the like of the rucksack main body 2 and accessories in
response to diversification of usage, purpose of use, usage mode and the like. It is performed
(refer the patent 2602780, the patent 2668094, the Unexamined-Japanese-Patent No. 07327290 etc.).
[0003]
However, almost no proposal has been made for the addition of backpacks with functions other
than storage of articles (in particular, acoustic functions etc.), and rucksacks with acoustic
functions etc. useful for backpack wearers are also practically used. It has not been
[0004]
Therefore, in order to listen to music while walking, climbing, etc., a rucksack wearer generally
listens with headphones or earphones by carrying a CD player (Compact Disk Player) or the like
in a pocket of clothes. It is
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1
[0005]
Although it has been proposed that a large cone-shaped speaker is carried on the back to
transmit the air vibration of the speaker directly to the back, there is proposed an acoustic sensor
(see Japanese Patent Application Laid-Open No. 07-327290). Because of physical strength and
physiology of the body, it is seldom practicable and has stopped at the stage of mere idea.
[0006]
[Problems to be Solved by the Invention] In the prior art, there is no idea that a rucksack has an
acoustic function, and since the acoustic function of the rucksack has not been studied, the
rucksack has not been studied. The condition of the sound and the sound field that enables the
sack wearer to be able to listen optimally during sports in the open air, walking in the city, etc. is
unknown, and the acoustic syntax for rucksacks satisfying such conditions is unknown. Met.
[0007]
Therefore, the acoustic system for the rucksack satisfying the conditions of the sound and the
sound field and the conditions were examined in detail by the inventor, and the rucksack of the
present invention was devised.
[0008]
The rucksack according to the present invention aims at the following (a) to (c) and the like.
(A) The present invention is a rucksack that allows natural (that is, without headphones or
earphones) and clear listening to the sound from electro-acoustic equipment and clear listening
to environmental noise. It is an object of the present invention to provide a rucksack provided
with a speaker system created around the wearer's 30 ears.
(B) It is another object of the present invention to provide a rucksack in which the function of the
above (a) is expressed by a speaker system even if the rucksack has various forms.
(C) Another object of the present invention is to provide a rucksack in which a rucksack wearer
expresses the function of (a) by a speaker system even in various activities.
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[0009]
The invention according to claim 1 is a rucksack having a structure in which the rucksack body is
carried by a shoulder belt, and the rucksack provided on the shoulder belt and output from the
rucksack A speaker for reaching the wearer's ear, a rucksack main body, and a storage portion
provided on at least one of the rucksack components connected to the rucksack main body, for
storing the acoustic signal generator connected to the speaker; It is characterized by having.
[0010]
Next, the operation of the rucksack according to claim 1 will be described.
[0011]
In the rucksack according to the first aspect of the present invention, the acoustic signal
generating device can be stored in the rucksack main body and the storage section provided in at
least one of the rucksack components connected to the rucksack main body.
[0012]
When a speaker provided on a shoulder belt is connected to an audio signal generator and an
audio signal output from the audio signal generator is input to the speaker, a sound is output
from the speaker and a sound output from the speaker is rucksack Reach the ear of the sucker.
[0013]
The rucksack component may be, for example, a shoulder belt, a waist strap, or any other
member that constitutes a rucksack together with the rucksack body.
[0014]
Also, the storage portion may be detachably provided to the rucksack main body or the rucksack
component.
[0015]
According to a second aspect of the present invention, in the rucksack according to the first
aspect, the speaker is a flat speaker having a flat diaphragm.
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[0016]
Next, the operation of the rucksack according to claim 2 will be described.
[0017]
In the rucksack according to the second aspect of the invention, since the speaker is a flat
speaker having a flat diaphragm, the diaphragm vibrates to emit a plane wave.
[0018]
According to a third aspect of the present invention, in the rucksack according to the first or
second aspect, the speaker is provided movably along the shoulder belt.
[0019]
Next, the operation of the rucksack according to claim 3 will be described.
[0020]
In the rucksack according to the third aspect, the speaker can be moved along the shoulder belt.
[0021]
Therefore, the position of the speaker can be adjusted so that the sound output from the speaker
reaches the ear or near the ear.
[0022]
According to a fourth aspect of the present invention, in the rucksack according to any one of the
first to third aspects, a bass having a diaphragm having a larger area than a diaphragm of a
speaker provided on the shoulder belt. A speaker is provided on at least one of the rucksack
body, the shoulder belt, and a rucksack component connected to the rucksack body.
[0023]
Next, the operation of the rucksack according to claim 4 will be described.
[0024]
Since the low frequency speaker is provided with a diaphragm having a larger area than that of
the speaker provided on the shoulder belt, it is possible to reproduce a sound having a frequency
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4
lower than that of the speaker provided on the shoulder belt.
[0025]
The invention according to claim 5 is the rucksack according to any one of claims 1 to 4, wherein
the shoulder belt is provided with means for housing or holding a control device of the acoustic
signal generator. It is characterized by being equipped.
[0026]
Next, the operation of the rucksack according to claim 5 will be described.
[0027]
In the rucksack according to the fifth aspect of the invention, since the means for storing or
holding the control device of the acoustic signal generator is provided on the easily accessible
shoulder belt, the operability of the control device is improved.
[0028]
According to a sixth aspect of the present invention, in the rucksack according to any one of the
first to fifth aspects, the shoulder belt has a means for storing or holding a microphone. It is
characterized.
[0029]
Next, the operation of the rucksack according to claim 6 will be described.
[0030]
The acoustic signal generator, in particular the radio telephone, etc. is equipped with a
microphone.
[0031]
In the rucksack according to the sixth aspect of the present invention, since the means for storing
or holding the microphone is provided on the easily accessible shoulder belt, the operability of
the microphone is improved.
[0032]
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5
BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a rucksack according to
the present invention will be described based on FIGS.
[0033]
While the rucksack illustrated in FIGS. 1-7 is a preferred embodiment of the present invention, it
is exemplary of some of the various embodiments encompassed by the present invention.
[0034]
In FIG. 1 to FIG. 7, those given the same reference numerals indicate the same or equivalent ones.
<The whole rucksack> The form of the whole rucksack is demonstrated based on FIGS. 1-4.
[0035]
FIG. 1 is an explanatory view showing the back of the rucksack, FIG. 2 is an explanatory view
showing the front of the rucksack, FIG. 3 is an explanatory view showing the front of the
rucksack wearer, and FIG. 4 is a side view of the rucksack wearer FIG.
[0036]
As shown in FIGS. 1, 3 and 4, the rucksack 1 has a basic form having a rucksack body 2 and a
shoulder belt 3 provided on the back surface thereof.
[0037]
In the shoulder belt 3, the speaker unit 4 for emitting a plane wave is disposed in the area
corresponding to the shoulders of the backpack wearer 30 with the diaphragm facing upward,
and the backpack wearer 30 is approximately directly under It is possible to listen to a plane
wave emitted from and reaching or passing both ears or near both ears.
[0038]
The speaker unit 4 is electrically connected to the sound signal generator 22 housed in the
housing portion 21 of the rucksack main body 2 shown in FIG. 2 through wiring (not shown) or
the like to function as a sound source.
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[0039]
A volume controller or the like may be provided in the middle of the wiring connecting the sound
signal generator 22 and the speaker unit 4.
[0040]
The speaker unit 4 has characteristics of a plane wave (a wave front on which the sound wave
travels is a parallel plane), such as sound pressure maintenance, far-distance transferability,
rectilinearity and high directivity, as shown in FIG. It is also possible to arrange at a place other
than that shown in FIGS. 3 and 4 to receive the effects of the present invention (the details of the
speaker unit 4 will be described later).
[0041]
It should be noted that the shoulder belt 3 has the effects of the present invention in relation to
various conditions such as the speaker unit 4, the storage portion of the shoulder belt accessory,
the rucksack main body 2 and the like, and the load on the rucksack wearer 30, etc. In a form
and structure suitable for
[0042]
Accordingly, the shoulder belt 3 can be in a form other than that of FIG. 1 (for example, an
independent form dedicated to left and right shoulders) other than continuous bands and
continuous bands, and various forms and structures It is possible to provide
[0043]
However, positioning of the speaker unit 4 is easy for the shoulder belt 3 of the continuous band.
<Speaker and Arrangement Thereof> The speaker unit 4 of this embodiment will be described
based on the drawings.
[0044]
FIG. 5 is an exploded perspective view of the speaker unit 4, FIG. 6 is a cross-sectional view of the
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speaker unit 4, and FIG. 7 is an explanatory view of the speaker unit 4 embedded in the shoulder
belt 3.
[0045]
As shown in FIG. 7, the speaker unit 4 is embedded in the shoulder belt 3.
[0046]
As the speaker unit 4, for example, the so-called multi-cell flat speaker described in PCT / JP00 /
03755 etc. can be used, and there are various sizes, but all of them can be targeted for use. .
[0047]
As shown in FIGS. 5 and 6, the speaker unit 4 used in the present embodiment is provided with a
yoke 50 made of a plate-like member formed of a magnetic material.
[0048]
In the magnet fixing portion 50A of the yoke 50, four permanent magnets 52 which are flat and
formed in a rectangular shape are alternately positioned with pole faces of different polarities,
and the pole faces are directed upward in the figure. It is fixed and arranged by providing a
predetermined gap by bonding.
[0049]
On the upper surface side of the yoke 50, a diaphragm 54 is disposed close to the magnetic pole
surface so as to be parallel to the magnetic pole surface of the permanent magnet 52 and hence
the upper surface of the yoke 50.
[0050]
The outer peripheral edge of the rectangular frame 58 is fixed to the diaphragm mounting
portion 50B of the yoke 50 with a spacer 56 made of paper or the like interposed.
[0051]
In the frame 58, an edge 60, which is an elastic portion having a semicircular cross section, is
continuously formed along the outer peripheral edge.
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[0052]
The outer peripheral edge of the diaphragm 54 is adhered to the inner peripheral edge side of
the frame 58.
[0053]
In the diaphragm 54, four coils 62 formed in a spiral shape are arranged corresponding to each
of the permanent magnets 52.
[0054]
Each coil 62 is formed so as to be spirally wound so as to be substantially similar to the outer
edge of the permanent magnet 52.
[0055]
A magnetic flux directed in a direction substantially parallel to the film surface of the diaphragm
54 is linked to each coil 62.
[0056]
When a current is applied to the coil 62, the force in the direction perpendicular to the film
surface of the diaphragm 54 is displaced, and the diaphragm 54 is displaced in the direction
perpendicular to the film surface.
[0057]
Therefore, by energizing the coil 62 with an electrical signal representing the sound to be
generated, the diaphragm 54 vibrates in response to the electrical signal.
[0058]
In the speaker unit 4, plane waves are emitted in the same phase from the respective coils 62 of
the diaphragm 54, and a synthetic plane wave in which the plane waves are synthesized is
emitted from the entire diaphragm 54.
[0059]
Further, as shown in FIG. 7, on the front surface of the speaker unit 4 embedded inside the
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shoulder belt 3, a punching metal for protecting the magnetic shield and the diaphragm 54 (a
magnetic material having an infinite number of small holes formed therein) The metal plate 55 is
disposed at a constant distance from the diaphragm 54.
<Storage Section of Rucksack Main Body> FIG. 2 shows the inside of the storage section 21
(which is a dedicated storage pocket) by opening the fastener 20 at the rear of the rucksack main
body 2.
[0060]
The storage portion 21 of the rucksack main body 2 can be stored in a form (for example,
dedicated) as long as the generator 22 of the acoustic signal using the speaker unit 4 as a sound
source or the device constituting it can function. Storage pockets, etc.), the number and
arrangement location, etc. are arbitrary.
[0061]
The acoustic signal generator 22 is an apparatus for generating an acoustic signal for using the
speaker unit 4 as a sound source, and, for example, a CD player (Compact Disk Player), a cassette
tape player, an MD player (MiniDisk) Player) and MP-3 player, etc. There are an audio signal
(audio signal) reproduction device of a recording medium, a radio receiver such as a radio
receiver (radio receiver) and a radio telephone, and the like.
[0062]
Although the storage unit 21 of the rucksack main body 2 typically stores the sound signal
generating device 22, it may store a device (for example, a drive unit) constituting the same.
[0063]
As described above, the storage unit 21 of the rucksack body 2 may store an amplifier (not
shown) and the like together with the sound signal generator 22.
[0064]
At the end of the wire connected to the speaker unit 4, a connector (not shown) (so-called
connector).
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10
) Are connected, and a connector is disposed in the storage unit 21.
[0065]
Therefore, in the storage unit 21, it is possible to connect the speaker unit 4 with the sound
signal generator 22 stored by the rucksack wearer 30.
[0066]
Here, an amplifier may be connected to the acoustic signal generator 22, and the connector of
the storage unit 21 may be connected to the output terminal of the amplifier. The device
connected to the connector of the storage unit 21 is It is not limited to the signal generator 22 or
amplifier.
[0067]
For example, if the output of the amplifier built into the acoustic signal generator 22 is large, the
acoustic signal generator 22 and the connector of the storage unit 21 may be directly connected,
and incorporated into the acoustic signal generator 22. If the output of the amplifier is small, the
acoustic signal generator 22 may be connected to the connector via a separate amplifier.
[0068]
In the present embodiment, the generator 22 of the acoustic signal accommodated in the inside
of the accommodating portion 21 is connected to the connector via the amplifier.
[0069]
The acoustic signal generation device 22 is also connected to the wiring connected to the remote
controller 11 for operating the acoustic signal generation device 22 by another connector.
[0070]
The storage portion 21 of the rucksack main body 2 can be provided either inside or outside the
rucksack main body 2, and the opening portion is a dedicated storage pocket that can be opened
and closed by opening and closing means such as a fastener. If so, the convenience of the
rucksack wearer 30 is secured.
[0071]
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11
Also, the equipment of the sound signal generator 22 such as recording media (eg, CD, MD,
semiconductor memory, cassette tape, etc.), main and spare batteries, batteries, etc. Alternatively,
it is preferable to provide the rucksack main body 2 with a storage unit (in particular, a dedicated
storage pocket or the like) for storing collectively.
[0072]
It is preferable that the storage unit in which the equipment is stored individually or in a
classified manner be provided in an arrangement that is suitable for the convenience and
ergonomics of the backpack wearer 30.
[0073]
Although the storage portion for the equipment may be disposed either inside or outside the
rucksack body 2, the storage portion for the frequently used equipment may be disposed outside
the rucksack body 2 preferable.
<Shoulder Belt> The shoulder belt 3 is preferably provided with means for storing or holding
control devices such as a power switch, a sound volume adjusting device of the sound signal
generating device 22, and a remote controller, for the convenience of operation.
[0074]
The storage means of the control device is, for example, a dedicated pocket for storing the
remote controller 11 when not in use.
[0075]
The holding means of the control device is, for example, a locking device such as a belt, a clip or
the like which can lock the remote control 11.
[0076]
Also, the shoulder belt 3 may be provided with means for storing or holding a device other than
the control device, for example, a microphone connected to a wireless device such as a cellular
phone or transceiver.
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[0077]
The means for storing the microphone is, for example, a dedicated pocket for storing the
microphone when not in use.
[0078]
Further, holding the microphone means, for example, a locking device such as a belt, a clip or the
like capable of locking the microphone.
[0079]
Note that a plurality of types of sound signal generating devices 22 may be stored in the storage
section 21.
[0080]
When a plurality of types of acoustic signal generating devices 22 are accommodated, and each
of the acoustic signal generating devices 22 has a remote controller, these remote controllers
may be individually classified or gathered to form the shoulder belt 3 It is preferable that the
rucksack wearer 30 ensure the convenience of the operation.
[0081]
The shoulder belt 3 can also be used to store wiring by incorporating a wiring or the like that
often generates the acoustic signal generator 22 and other devices.
[0082]
Incidentally, a wire connecting the speaker unit 4 and the connector provided in the storage unit
21 is built in the shoulder belt 3 so as not to be seen from the outside.
[0083]
The storage portions provided in the rucksack main body 2 and the shoulder belt 3 are optional
in terms of the number, arrangement, and configuration as long as the convenience of use of the
rucksack wearer 30 is secured.
(Function of the rucksack according to the present embodiment) In the rucksack main body 2 of
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the rucksack 1 shown in FIG. 1, the length of the strap 5 provided on the shoulder belt 3 and the
fixing strap 6 extending from below is adjusted by the connecting member 7. The shoulder belt 3
is longitudinally fastened to the front of the body of the rucksack wearer 30 and carried on the
back.
[0084]
The shoulder belt 3 around the waist can be fastened to the waist of the backpack wearer 30 by
tightening the waist strap 8 with the buckle 9.
[0085]
Furthermore, by adjusting the length of the oblique strap 10 on the front of the body of the
rucksack wearer 30, the shoulder strap 3 can be fastened to the front of the body of the rucksack
wearer 30.
[0086]
Therefore, the rucksack wearer 30 can wear the rucksack 1 on the body to perform various
activities outdoors and in the city.
[0087]
Incidentally, the shoulder belt 3 shown in FIGS. 1, 3 and 4 is illustrated in the case where the
storage portion of the control tool such as the remote controller 11 is not provided.
[0088]
FIGS. 3 and 4 show a condition in which the rucksack wearer 30 holds the shoulder belt 3 all
over his body and carries the rucksack body 2 on his back.
[0089]
The rucksack wearer 30 shown in FIGS. 3 and 4 listens to the sound of a plane wave (see the
arrow in FIG. 4) going straight upward from the speaker unit 4 arranged in the area directly
below the ears with both ears. At the same time, environmental noises traveling and propagating
from the lateral direction, the front-rear direction, etc. will be heard by both ears simultaneously.
[0090]
Therefore, the rucksack wearer 30 can listen to traffic signals such as voices necessary for
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walking and listen to desired music and the like even when walking in a city where
environmental noise is large. .
[0091]
In particular, the speaker unit 4 is disposed at a position close to the ear of the rucksack wearer
30 and outputs a plane wave excellent in rectilinearity. You can hear the sound clearly.
[0092]
Further, since the speaker unit 4 of this embodiment is provided with the flat diaphragm 54, it
can be formed thinner than the speaker unit of other structure such as the cone speaker unit etc.
It can be buried easily.
[0093]
FIG. 8 is an explanatory view showing the rectilinearity of a plane wave (including a synthetic
plane wave).
[0094]
Although the sound wave by the plane wave is mainly composed of the sound ray main body 64
(hatched portion), a diffusion area 66 where the sound wave spreads outward is substantially
generated.
[0095]
The angle α of the diffusion area 66 of the plane wave (α: the angle with respect to the
perpendicular HL of the diaphragm 54.
The diffusion area is the area within 3 dB of the decrease in sound pressure relative to the sound
pressure measured on the perpendicular line HL.
Sound pressure is measured at a fixed distance from the sound generation area.
) Becomes larger, it becomes difficult to create a clearly audible sound field.
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[0096]
Although it is difficult to define the angle α of the diffusion region 66 by an exact numerical
value, it is suitable to be within 30 degrees (preferably within 25 degrees).
[0097]
As long as the speaker unit 4 can radiate plane waves to both ears or near both ears of the
backpack wearer 30, there is no restriction on the number and arrangement of the speaker units
4, and the like.
[0098]
Further, the speaker unit 4 may be disposed on the shoulder belt 3 so that a plane wave is
emitted in a direction other than the directions of the both ears or both ears, for example, the
front of the backpack wearer 30.
[0099]
The number and arrangement of the coils 62 are not limited to those described above, as long as
the speaker unit 4 can generate a plane wave.
[0100]
In this speaker unit 4, it is also possible to make each coil 62 electrically independent, and to
conduct different electric signals to each coil 62, whereby from each coil 62 portion of the
diaphragm 54. It is also possible to emit different sounds.
[0101]
For example, one speaker unit 4 is disposed behind the neck of the rucksack wearer 30 and the
plane wave radiation surface of the speaker unit 4 is directed in the direction (that is, two
directions) of the rucksack wearer 30; For example, as shown in FIG. 9, it is possible to produce
the same effect as arranging two speaker units 4 by one speaker unit 4 by bending the elongated
speaker unit 4 or the like.
[0102]
In FIG. 9, the arrow indicates the radiation direction of the plane wave.
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[0103]
The speaker unit 4 is not limited to the above-mentioned structure, but a known speaker emitting
a plane wave can be used, and a speaker having a new structure outputting a plane wave may be
designed and used. .
[0104]
The speaker unit 4 is typically fixedly provided at a predetermined position so that a plane wave
radiates toward the both ears or both ears of the rucksack wearer 30 when the rucksack 1 is
used. However, it is also possible for it to be removable or movably provided and fixed in place
when using the rucksack.
[0105]
FIG. 10 shows a rucksack 1 in which the speaker unit 4 is movably provided.
[0106]
A speaker storage member 70 is provided slidably on the shoulder belt 3.
[0107]
As shown in FIG. 11, the speaker storage member 70 comprises a cloth main body 72 containing
the speaker unit 4 and a cloth belt 74 integrally provided on the main body 72.
[0108]
The belt 74 includes a first belt member 74A extended from one end of the main body 72, and a
second belt member 74B extended from the other end of the main body 74 and partially
overlapping the first belt 74A. ing.
[0109]
The vicinity of the tip of the first belt member 74A is bent and sewn to the middle portion of the
second belt member 74B, and the shoulder belt 3 is inserted between the main body 72 and the
belt 74.
[0110]
Further, Velcro tape 76 (surface fastener) is attached to a part of the outer surface of the first
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belt member 74A and a part of the inner surface of the second belt member 74B. The belt 74 is
loosened, and the speaker storage member 70 can be easily moved along the shoulder belt 3.
[0111]
When the second belt member 74 B is pulled in the direction of arrow A to tighten the belt 74
and the Velcro tapes 76 are attached to each other, the speaker storage member 70 is fixed to
the shoulder belt 3.
[0112]
In the main body 72, a speaker fixing member 78 is embedded.
The material of the speaker fixing member 78 is, for example, urethane foam, synthetic resin,
rubber or the like, and any material may be used as long as the speaker unit 4 can be fixed.
[0113]
A counterbore 80 is formed on the speaker fixing member 78, and the speaker unit 4 is attached
to the counterbore 80.
[0114]
Further, on the front side of the speaker unit 4 in the main body 72, a punching metal 82 for
protecting the magnetic shield and the diaphragm 54 is disposed at a predetermined distance
from the diaphragm 54, and on the front side of the punching metal 82. Further, a net 84 for
sand and dust protection is disposed.
[0115]
Depending on the shape of the rucksack wearer 30 and the position of the rucksack body 2 and
the shoulder belt 3, the speaker unit 4 may not be directed to the rucksack wearer 30 ear or near
the ear, As shown in 10, since the position of the speaker storage member 70 can be changed
along the shoulder belt 3, the speaker unit 4 can be directed to the ear of the backpack wearer
30 or near the ear.
[0116]
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18
Further, the speaker storage member 70 can be disposed on the front side of the backpack
wearer 30, and the plane wave from the speaker unit 4 can also be radiated to the front of the
backpack wearer 30.
[0117]
For example, if a microphone and an amplifier are connected to the speaker unit 4, it can also be
used as a loudspeaker.
[0118]
FIGS. 12 and 13 show another form of rucksack 1 in which the speaker unit 4 is movably
provided.
[0119]
The same components as those of the rucksack 1 shown in FIGS. 10 and 11 are designated by
the same reference numerals, and the description thereof will be omitted.
[0120]
A rail 86 having a substantially C-shaped cross section and made of synthetic resin or the like is
embedded in the shoulder belt 3 along the longitudinal direction.
[0121]
A slide member 88 substantially T-shaped in cross section is slidably fitted on the rail 86.
[0122]
On the slide member 88, the main body 72 of the speaker accommodating member 70 shown in
FIG. 11 (the belt 74 is removed).
) Is attached via the plate 90.
[0123]
Velcro tapes 76 (surface fasteners) are attached to the slide member 88 and the shoulder belt 3.
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When the Velcro tapes 76 are separated from each other, the main body 72 incorporating the
speaker unit 4 is along the shoulder belt 3. It can be easily moved.
[0124]
Further, when the Velcro tapes 76 are attached to each other, the main body 72 containing the
speaker unit 4 is fixed to the shoulder belt 3.
[0125]
Also, FIG. 14 shows another form of rucksack 1 in which an active subwoofer 92 is provided on
the waist strap 8.
[0126]
As shown in FIG. 14, this active subwoofer 92 is composed of a speaker unit 4 and an amplifier
(not shown) and another power supply (battery).
[0127]
The diaphragm 96 of the speaker unit 94 used for the active subwoofer 92 has a larger area than
the diaphragm 54 of the speaker unit 4 provided on the shoulder belt 3 and is excellent in bass
reproduction capability.
[0128]
A low pass filter (not shown) for passing only low-range acoustic signals between the acoustic
signal generator 22 and the amplifier of the active subwoofer 92 or between the amplifier and
the speaker unit 94. Is provided.
[0129]
By further adding such an active subwoofer 92, it is possible to enjoy music more comfortably.
[0130]
Here, although an example in which the active subwoofer 92 is provided on the waist strap 8 is
shown, the present invention is not limited to this, and the active subwoofer 92 includes the
shoulder belt 3, the rucksack body 2 and others. It may be provided in the member which
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20
constitutes the rucksack 1.
<Rucksack> Rucksack (Rucksack, Ruck-sack) means "back bag stuffed with food and equipment"
derived from German which means back (equivalent to Ruck) and German which means bag
From the beginning, Ruggsack, Rucksack, Rucksack, Zack, etc. may be used as synonyms and may
be identified with different terms (Japanese Dictionary Encyclopedia: "Japanese Encyclopedia"
Volume 20) , Showa 51 issue, see Shogakukan etc.).
[0131]
Even in the case of the backpacks, even if they are identified by another name, all the structures
having the storage body carried on the back by the back belt are treated as falling under the
category of the backpack.
[0132]
The “rucksack” of the present invention is also used in a broad sense (that is, in the meaning
of the structure having a storage body carried by the back with a back belt), a rug, a sack, a ruck,
a sack, a backpack, It is used in a sense that includes dayback, knapsack and attackback.
[0133]
The rucksack according to the present invention is not limited in its size, form, etc., and may have
the function of storing the acoustic signal generator 22 and the function of storing and
transporting articles.
[0134]
The rucksack of the present invention includes various specific examples other than the abovementioned examples, and some of them are exemplified below.
(A) The speaker unit 4 may be arranged to be inclined to the shoulder belt 3 and radiate a plane
wave in the vicinity of both ears of the backpack wearer 30 from an oblique downward direction.
(B) The shoulder belt 3 may have a built-in shoulder pad.
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(C) In the shoulder belt 3, the placement area of the speaker unit 4 has a form-retaining property
(for example, the form-retaining property of a hard plastic molded body), and the speaker unit 4
is attached to both ears of the backpack wearer 30. It may be configured to be positioned
accurately.
(D) The shoulder belt 3 may be wide or narrow.
(E) The rucksack body 2 and the shoulder belt 3 may be formed of materials other than
waterproof cloth.
(F) The original article storage mechanism of the rucksack body 2 can be provided with any
storage area.
(G) A part or most of the rucksack body 2 may be made of a material other than cloth, for
example, a molded body of a lightweight hard material (for example, a plastic molded body, FRP,
a metal molded body, etc.)
[0135]
In the present invention, in line with the object of the present invention, modification or partial
modification and addition of the present invention is optional, as long as the effects of the
present invention are not particularly impaired. It is the scope of the present invention.
[0136]
According to the rucksack of the present invention, various effects represented by the following
(i) to (v) can be obtained.
(I) The rucksack wearer can listen to the sound of the souka clearly in a natural state without
using headphones or the like, and can listen to surrounding environmental sounds naturally and
clearly in the same sound field.
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(Ii) The value of rucksacks used in various outdoor activities such as mountain climbing and
hiking will be significantly improved.
(Iii) The value of use of rucksacks used in the city where traffic and noise are both intense is
significantly improved.
(Iv) A rucksack to which a new acoustic function is added can be obtained without being
restricted by the structure and configuration of the rucksack.
(V) The inherent function of the rucksack (i.e., the storage function of the articles etc.) is
maintained, and the uses of the rucksack can be diversified.
[0137]
In the rucksack according to the second aspect, since the speaker is a flat speaker having a flat
diaphragm, it can be easily embedded in a thin shoulder belt.
In addition, the sound can be clearly transmitted to the rucksack wearer's ear without raising the
volume.
[0138]
In the rucksack according to the third aspect, since the position of the speaker can be adjusted,
the speaker of the rucksack wearer's ear can be used regardless of the type of rucksack wearer
or the mounting position of the rucksack. Or it can be directed near the ear.
[0139]
In the rucksack according to the fourth aspect of the present invention, the speaker of the
shoulder belt can hear lower frequency sounds that can not be reproduced.
[0140]
According to the rucksack of the fifth aspect, the operability of the control device is improved.
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[0141]
In the rucksack according to the sixth aspect, the operability of the microphone is improved.
[0142]
Brief description of the drawings
[0143]
1 is an explanatory view showing the back of the rucksack.
[0144]
2 is an explanatory view showing the front of the rucksack.
[0145]
3 is an explanatory view showing the front of the rucksack wearer.
[0146]
4 is an explanatory view showing the side of the rucksack wearer.
[0147]
5 is an exploded perspective view of the speaker unit.
[0148]
6 is a cross-sectional view of the speaker unit.
[0149]
7 is an explanatory view showing a speaker disposed on the shoulder belt 3.
[0150]
8 is an explanatory view showing the straightness of the plane wave.
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[0151]
9 is a perspective view of a speaker unit according to another embodiment.
[0152]
10 is an explanatory view showing the back of the rucksack according to another embodiment.
[0153]
11 is a cross-sectional view of the speaker housing member.
[0154]
FIG. 12 is an explanatory view showing a back surface of a rucksack according to still another
embodiment.
[0155]
13 is a cross-sectional view of the speaker housing member and the shoulder belt.
[0156]
14 is an explanatory view showing the back of the rucksack according to another embodiment.
[0157]
Explanation of sign
[0158]
DESCRIPTION OF SYMBOLS 1 rucksack 2 rucksack main body 3 shoulder strap 4 speaker unit 5
strap 6 strap 7 connecting tool 8 waist strap 9 buckle 10 diagonal strap 20 fastener 21 storage
portion 22 sound signal generator 23 storage portion 30 rucksack wearer 94 speaker Unit
(loudspeaker)
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25
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