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JPH10290491

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Notice
This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
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DESCRIPTION JPH10290491
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
microphone for a mobile phone.
[0002]
2. Description of the Related Art Heretofore, the widespread use of mobile phones and the
frequent use thereof while driving a car have resulted in successive traffic accidents due to
forward carelessness associated with telephone operations, resulting in social problems.
[0003]
Therefore, a microphone for mobile phones has been developed in which a nondirectional
microphone is provided midway on the connection line of the earphones connected to the mobile
phone, and if the earphones are installed, it is possible to automatically communicate when the
phone is called. Now, while driving, it became possible to talk on hands-free without releasing the
hand from the steering wheel.
[0004]
However, since the above-described conventional microphones for mobile phones are
nondirectional, there is no problem if they are in a quiet place or in a car that is an enclosed
space, but, for example, in train stations or In the crowd, there is a problem that the voice of the
caller and the noise of the surroundings come together and it becomes difficult for the other
party to hear even if the mouth is brought close to the microphone, which inevitably makes a
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loud voice It often caused trouble around.
[0005]
An object of the present invention is to provide a mobile phone microphone capable of solving
the above-mentioned problems.
[0006]
Therefore, in order to solve the above-mentioned problems, in the present invention according to
claim 1, a condenser type microphone body provided with a pair of sound wave inlets provided
in an opposing state is a portable telephone body. The microphone casing is housed in a
microphone casing provided midway on the connection line of the earphones connected to the
microphone, and the same microphone casing is provided with external communication holes
respectively corresponding to the pair of sound wave inlets, and opening and closing one
external communication hole A switch is provided, and directivity and non-directivity are
selectively varied by switching operation of the open / close switch.
Therefore, it becomes possible to convey this voice to the other party clearly by using a handsfree phone while driving a car or switching to directivity in a noisy bustle.
[0007]
In the second aspect of the present invention, the open / close switch is configured to be capable
of a push operation, and at the time of non-operation, one external communication hole is closed,
and only the other sound wave inlet communicates with the outside. It functions as a
nondirectional microphone, and at the time of operation, each external communication hole is
opened, and both sound wave inlets communicate with the outside and are switched to the
directional microphone.
[0008]
Furthermore, in the present invention according to claim 3, the pair of sound wave inlets and the
external communication holes are vertically opposed in the mounted state, and the external
communication holes positioned below can be opened and closed.
[0009]
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BEST MODE FOR CARRYING OUT THE INVENTION The present invention accommodates a
condenser type microphone body provided with a pair of sound wave inlets provided in an
opposite state in a microphone casing provided midway on a connection line of an earphone
connected to a portable telephone body. At the same time, the microphone casing is provided
with external communication holes respectively corresponding to the pair of sound wave inlets,
and an open / close switch for opening / closing one external communication hole is provided.
Sex is selectively made variable.
[0010]
That is, with the earphones attached, the microphone casing is disposed so as to be located in the
mouth, and functions as a nondirectional microphone in a normal state, and enables hands-free
communication in a quiet place or in a car In a noisy place such as in a crowd, one external
communication hole is closed by switching operation of the open / close switch to function as a
directional microphone, and even small voices can be clearly communicated.
[0011]
The open / close switch can be configured to be capable of push operation, and at the time of
non-operation, one external communication hole is in a closed state, and only the other sound
wave inlet communicates with the outside to function as a nondirectional microphone At the time
of operation, each external communication hole can be opened, and both sound wave inlets can
be communicated with the outside to be switched to the directional microphone.
With this configuration, it is possible to make the configuration simple and easy to use.
[0012]
Further, it is preferable that the pair of sound wave inlets and the external communication holes
be vertically opposed in the mounted state, and that the external communication holes positioned
below be openable / closable.
[0013]
With this configuration, the microphone can be provided in a suspended position below the jaws,
so it does not get in the way, and it is easy to take a posture to wrap the microphone by hand
while pressing the switch of the microphone It will be possible to make a low voice call in the
noise.
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[0014]
Embodiments of the present invention will be specifically described below with reference to the
drawings.
[0015]
FIG. 1 shows a state in which a mobile phone microphone M according to the present
embodiment is mounted on a mobile phone main body A, FIG. 2 is a cross sectional view of the
mobile phone microphone M, and FIG. 3 is a cross sectional view along line II of FIG. It is.
E is an earphone, L is a connection line connecting the cellular phone body A and the earphone E,
and P is a connection plug provided at one end of the connection line L.
[0016]
As shown in FIG. 2, the microphone M for a mobile phone is provided with a pair of acoustic
wave inlets 21 and 22 formed in an opposing state in a synthetic resin microphone casing
(hereinafter referred to as a casing) 1 formed in a rugby ball shape. A condenser type
microphone main body (hereinafter referred to as a microphone main body) 2 which receives the
same dB sound from both sound wave inlets 21 and 22 is housed and configured, and connected
to the plug P via a connection line ML and an earphone It is disposed at a position separated
from E by a predetermined distance.
That is, in the present embodiment, as shown in FIG. 1, when wearing the earphone E, it is the
mouth of a general adult and is positioned at least below the mouth, and preferably the casing 1
is more than the jaws. It is preferable that the casing 1 is not in contact with the face or the like
in the mounted state by being positioned downward.
[0017]
The gist of the present invention is that the casing 1 is provided with external communication
holes 11 and 12 respectively corresponding to the pair of sound wave inlets 21 and 22, and an
open / close switch S for opening and closing one external communication hole is also provided.
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By switching operation of the switch S, directivity and omnidirectionality can be selectively
varied.
[0018]
That is, as shown in FIG. 2, the casing 1 according to the present embodiment is formed by
joining the longitudinal halves 1a and 1a, and the microphone main body 2 is accommodated
substantially at the center of the inside of the casing 1 An upper external communication hole 11
communicating with the upper space Q1 and a lower external communication hole 12
communicating with the lower space Q2 are provided. Is formed.
10Is a joint of the casing 1.
[0019]
Further, the open / close switch S has the partition wall 3 having a plurality of communication
slits 30 formed at a position directly below the microphone body 2 in the lower space Q2, and
the operation plate 4 is in sliding contact with the partition wall 3. Is attached and configured.
[0020]
The operation plate 4 includes a main body 41 having an opening / closing slit 40 corresponding
to the communication slit 30, an operation projection 42 provided on one end of the main body
41 and protruding from the casing 1; It comprises an elastic leg 43 provided on the opposite side
of the operation projection 42, and in the normal posture of the operation plate 4, the opening /
closing slit 40 and the communication slit 30 do not overlap, and the operation projection 42 is
When pressed, the leg portion 43 functions as a spring to bend and the opening / closing slit 40
and the communication slit 30 are attached so as to overlap.
In addition, between the partition wall 3 and the connection lines L and ML which penetrate this,
it seals reliably, and it is made to prevent the leak of an acoustic wave.
[0021]
That is, normally, as shown in FIG. 2 and FIG. 3, since the communication slit 30 and the opening
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/ closing slit 40 are not superposed, sound is incident on the sound wave inlet 21 of the
microphone main body 2 only through the upper outer communication hole 11. It will have an
omnidirectionality.
[0022]
On the other hand, when the open / close switch S is operated, that is, when the operation
projection 42 is pressed, the open / close slit 40 and the communication slit 30 overlap, and not
only the upper external communication hole 11 but also the sound is the lower external
communication hole 12 → Opening and closing slit 40 → communicating slit 30 → sound wave
inlet 22 becomes possible, sound of same dB is canceled each other from sound wave inlets 21
and 22 located at the upper and lower sides, and directivity is outputted only sound with
stronger sound pressure Function as a sexual microphone.
[0023]
Therefore, in a state in which the plug P is connected to the mobile phone A and the earphone E
is simply mounted, the mobile phone microphone M becomes nondirectional, and hands free
calling in a quiet place or in a car etc. Is possible.
[0024]
On the other hand, for example, in a noisy place such as in a station yard or in a crowded street,
if the directional switch is operated by switching the open / close switch S, the other party can
hear clearly even if speaking in a small voice. There is no need to bother others around you.
[0025]
Further, the microphone is provided at a position suspended below the jaws, and the lower
external communication hole 12 is opened and closed, so that the projection 42 for operating the
changeover switch S in a natural posture. The casing 1 can be wrapped by hand while pushing
the key, and the operability at the time of making a low voice call is extremely good.
[0026]
As described above, in the present embodiment, the microphone body 2 can be switched between
omnidirectionality and directivity with a simple configuration and simple operation, and
telephone use can be performed according to the use place.
[0027]
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The shape of the casing 1 and the structure of the open / close switch S are not limited to those
shown in this embodiment.
[0028]
The present invention is practiced in the above-described mode, and exhibits the following
effects.
[0029]
In the first aspect of the present invention, the condenser type microphone body provided with
the pair of sound wave inlets provided in the opposite state is accommodated in the microphone
casing provided in the middle of the connection line of the earphone connected to the mobile
phone main body. The microphone casing is provided with an external communication hole
corresponding to each of the pair of sound wave inlets, and an open / close switch for opening /
closing one external communication hole, and switching operation of the open / close switch Can
be used hands-free while driving a car, etc., and can be clearly transmitted to the other party by
switching to a directivity in a noisy bustle etc. There is no need to bother the surrounding area by
making a loud voice.
[0030]
In the second aspect of the present invention, the open / close switch is configured to be capable
of a push operation, and at the time of non-operation, one external communication hole is closed,
and only the other sound wave inlet communicates with the outside. It functions as a directional
microphone, and in operation, each external communication hole is opened, and both sound
wave inlets communicate with the outside to be switched to the directional microphone.
Therefore, in addition to the above effects, a simple configuration with low cost is provided. And
the operability is extremely good.
[0031]
In the third aspect of the present invention, the pair of sound wave inlets and the external
communication holes are vertically opposed to each other in the mounted state, and the external
communication holes positioned below can be opened and closed freely. In addition, the user can
wrap the microphone casing by hand while operating the change-over switch in a natural
posture, and it becomes possible to make a call with a smaller voice in a natural posture.
[0032]
Brief description of the drawings
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[0033]
1 is a perspective view of a chip-type resistor as an electronic component having a film-like
resistor according to the present embodiment.
[0034]
2 is an explanatory view showing the first half of the manufacturing process of the same chip
resistor.
[0035]
3 is an explanatory view showing the second half of the manufacturing process of the same chip
resistor.
[0036]
Explanation of sign
[0037]
A Mobile phone body E Earphone L Connection line M Microphone for mobile phone S Opening /
closing switch 1 Microphone casing 2 Microphone body 11 Sound wave inlet 12 Sound wave
inlet 21 External communication hole 22 External communication hole
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