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JPH04365295

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DESCRIPTION JPH04365295
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
speaker with an amplifier, and more particularly to a speaker with an amplifier used for sound
source devices such as a headphone stereo and a portable CD player.
[0002]
2. Description of the Related Art Conventionally, an amplifier built-in speaker for sounding
portable sound source equipment such as headphone stereo etc. has a power supply and an
amplification circuit respectively built in a pair of left and right speakers, and the sound source
equipment is connected by a cord ing. Alternatively, there is also provided one in which the left
and right amplification circuits and the power supply are built in one speaker, and the speakers
are connected to each other by a cord.
[0003]
However, in the conventional speaker, the cord for connection is an obstacle, and the speaker
remains separated left and right even when not in use, which is inconvenient to handle.
[0004]
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SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a
speaker with an amplifier which can be compactly integrated at the time of non-use without
unnecessary cords.
In order to achieve the above object, the speaker with amplifier according to the present
invention comprises a pair of left and right speakers provided with a plug for inputting a signal,
and an amplifier incorporating a pair of speaker amplification circuits and a power supply, While
providing an outlet for signal output in which the plug of each speaker on either side can be
inserted in right and left sides of an amplifier, the outlet for signal input in which a plug
connected to a sound source device can be inserted in one side of amplifier It is characterized in
that it is provided in parallel with the outlet, and the plug of the other speaker can be inserted
into the outlet for signal input.
[0005]
In the above configuration, when in use, plug the left and right speakers into the signal output
receptacles provided on the left and right sides of the amplifier to integrate the three parties and
connect the plug connected to the sound source device. Insert it into the signal output receptacle
of the amplifier. On the other hand, when not in use (stored), the other speaker is once removed
from the amplifier, and the plug of the speaker is inserted into the signal input receptacle into
which the plug of the sound source device has been inserted. As a result, the three parties are
integrated in a compact manner with the pair of speakers overlapping one side of the amplifier.
[0006]
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the speaker with
amplifier according to the present invention will be described below with reference to the
attached drawings. FIG. 1 shows a speaker with an amplifier at the time of use, and FIG. 2 shows
a container at the time of storage, and is constituted by a pair of left and right speakers 10 and
20 and an amplifier 30.
[0007]
The speakers 10 and 20 each have a vibrator in which a metal plate and a piezoelectric plate are
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2
bonded to each other, and adopt a piezoelectric system in which sound is oscillated according to
a change in voltage applied to the piezoelectric plate. According to this piezoelectric method, it is
possible to make the speaker thin. Furthermore, as shown in FIGS. 3 and 4, the speakers 10 and
20 each have a plug 11, 21 for signal input, two engaging claws 12, 22, and two guide pieces 13,
23 on one side. It is protrusively installed.
[0008]
The amplifier 30 has a case 31 containing a substrate 34 provided with an amplification circuit
for the speakers 10 and 20 and a power supply (battery 39) (see FIG. 6). A switch 32 for turning
off is provided, and a light emitting diode 33 for indicating on / off of the power is provided on
the front (see FIGS. 1 and 2). As shown in FIG. 5, signal output receptacles 35, 40 into which the
plugs 11, 21 of the speakers 10, 20 can be inserted are installed on the left and right side
surfaces of the amplifier case 31. Further, the engaging claws 12 and 22 protruding from the
speakers 10 and 20 project below the outlets 35 and 40, and the engageable holes 36 and 41
and the guide pieces 13 and 23 can penetrate. 42 are formed respectively.
[0009]
Further, on the right side surface of the amplifier case 31, an outlet 45 for signal input into
which a plug connected to a sound source device (not shown) can be inserted is arranged in
parallel with the outlet 35 for signal output. The plug 21 of the speaker 20 can also be inserted
into the signal input outlet 45, and the engaging claw 22 protruding from the speaker 20 is
inserted below the outlet 45 and can not be engaged with the hole 46 and the guide piece A hole
47 is formed in which 23 can enter.
[0010]
In the above configuration, when in use, the left and right speakers 10 and 20 are connected to
the amplifier 30 respectively (see FIG. 1). That is, the plugs 11 and 21 are inserted into the
outlets 35 and 40, and the engaging claws 12 and 22 and the guide pieces 13 and 23 are
inserted into the holes 36, 41, 37 and 42. Also, the plug connected to the sound source device is
inserted into the outlet 45. In this state, sounds can be emitted from the left and right speakers
10 and 20.
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[0011]
On the other hand, when not in use (stored), pull out the plug of the sound source device from
the outlet 45, remove the speaker 20 from the amplifier 30, and connect it with the other
speaker 10 on the right side of the amplifier 30 See Figure 2). That is, the plug 21 of the speaker
20 is inserted into the outlet 45, and the engaging claw 22 and the guide piece 23 are inserted
into the holes 46 and 47. Thus, the three parties are integrated in a compact manner in a state
where the speakers 10 and 20 overlap the right side surface of the amplifier 30.
[0012]
By the way, the engagement between the engaging claws 12 and 22 and the holes 41 and 46
pushes a release mechanism (not shown) provided on the back surface of the amplifier 30 to
move the speakers 10 and 20 outward. It can be released by pulling in the directions of arrows A
and B). The speaker with amplifier according to the present invention is not limited to the above
embodiment, and can be variously modified within the scope of the invention.
[0013]
In particular, the engaging claws 12 and 22 and the guide pieces 13 and 23 are for
supplementing the mechanical fixing strength when connecting the speakers 10 and 20 to the
amplifier 30, and the shape is arbitrary.
[0014]
As is apparent from the above description, according to the present invention, in use, the
speakers can be directly connected to the left and right sides of the amplifier using the plug, and
At the time of use (when stored), a pair of speakers can be integrated on one side of the amplifier.
Therefore, a cord for connecting the speaker and the amplifier is not necessary, and when not in
use, it can be compactly assembled, which is convenient for storage and portability.
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[0015]
Brief description of the drawings
[0016]
1 is a perspective view showing a state of use.
[0017]
2 is a perspective view showing a non-use (storage) state.
[0018]
FIG. 3 is a front view of the right side speaker.
[0019]
4 is a front view of the left speaker.
[0020]
5 shows the amplifier, (a) is a left side view, (b) is a right side view.
[0021]
6 is a front view showing an outline of the internal configuration of the amplifier.
[0022]
Explanation of sign
[0023]
10, 20: Speaker 11, 21: Plug 30: Amplifier 31: Amplifier case 35, 40: Signal output socket 45:
Signal input socket
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