JPS6223955B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vibrating pick-up ear microphone that picks up bone conduction audio signals from the wall of the external auditory canal and transmits speech, and particularly relates to a vibrating pick-up ear microphone that is suitable for use in one-ear transmission and reception. .

The present inventor has previously developed a vibrating pick-up type ear microphone for voice transmission or one-ear transmission/reception described in Japanese Patent Publication No. 53-39763, Publication Utility Model Publication No. 53-49607, Japanese Utility Model Publication No. 55-25577, etc. I made a proposal.

As the vibration pickup used in this type of ear microphone, piezoelectric elements and other various elements may be employed, as described in the above-mentioned publications. Regardless of the type of vibrating pickup, it is important that it be extremely small and precisely manufactured so that it can be installed within the ear canal. However, in the structure of the conventional vibration pickup type ear microphone, the vibration pickup is susceptible to various external shocks, and as the protection is insufficient, the vibration pickup performance may fluctuate.
In extreme cases, there is a risk of damage.

On the other hand, when the ear microphone is configured for one-ear transmission and reception, it is necessary to provide the ear microphone main body with a sound guide for guiding air-conducted sound from the reception system to the eardrum. The prior art related to this point is the above-mentioned Utility Model Publication Publication, Utility Model Publication No. 54-17385.
No. 55-179483, etc., there is a technology for passing air conduction sound into the storage space of a vibrating pickup, and a technology for transmitting sound that is separate from and independent of the storage space of a vibrating pickup. This technology is broadly divided into two types: forming a sound guide hole and passing air-conducting sound through the sound guide hole. Compared to the former, the latter has different vibration systems for both the transmitting and receiving systems, so it has the advantage of being less likely to cause the housing phenomenon. Not only is it extremely difficult to form a sound guide hole in manufacturing, but the sound guide hole can also be blocked by earwax, etc., so even if you try to clean it, it will be incomplete. There are drawbacks such as having no choice but to end the project.

The present invention has been made in order to eliminate the drawbacks and inconveniences of the above-mentioned prior art, and the first object of the present invention is to protect vibration pickups from vibrations caused by external shocks etc. by means of a double space. To provide a vibrating pickup type ear microphone capable of preventing performance fluctuations and damage of a pickup and further preventing performance fluctuations by protecting the vibrating pickup from earwax and the like.

A second object of the present invention is to prevent the housing phenomenon from occurring and to easily manufacture a sound conductor that allows air conduction sound to pass through when configured for transmitting and receiving calls incorporating an air conduction type receiving system. To provide a vibrating pick-up type ear microphone which can be easily cleaned and is sanitary even if the sound guide is blocked by earwax or the like.

Other objects of the invention will become apparent from the following description of the specification.

The above-mentioned objects of the present invention are to provide a vibrating pickup type ear microphone that picks up bone conduction audio signals from the wall of the ear canal by a vibrating pickup built into the ear microphone body, in which the vibrating pickup is located on the front side of the ear microphone body. An adapter that is built into the protruding part and comes into contact with the wall of the ear canal is removably provided on the front side of the ear microphone body, with a space formed between the adapter and the outer peripheral surface of the protruding part. This is achieved by a vibrating pick-up ear microphone featuring the following features:

According to a preferred embodiment of the present invention, the configuration is as follows. That is, (A) a vibrating pickup element that picks up bone conduction audio signals, (B) a lead wire connected to the vibrating pickup element via an impedance conversion semiconductor, and (C) guiding air conduction sound from an external speaker. A space is formed between the ear microphone body to which the sound conduit is attached, an adapter having a sound exit hole at the tip and attached to the ear canal, and the outer peripheral surface of the protruding part of the body having a built-in vibrating pickup element. The present invention is to provide a vibrating pickup type ear microphone for transmitting and receiving speech, which is detachably attached to the front side of the main body and communicates the air conduction sound of the receiving system emitted from the outlet of the sound pipe so as to reach the space.

Hereinafter, the present invention will be explained based on embodiments shown in the drawings.

In the embodiment shown in FIG. 1, a vibrating pickup element 1 that picks up the wearer's own bone conduction audio signal to be transmitted to the ear canal is inserted into a protruding portion 3 of an ear microphone body 2 with a space g ₁ therebetween. 4, a printed circuit board 5 provided with an impedance conversion semiconductor (not shown) is fixed to the stator 4, a through hole 6 is provided in the front part of the main body 2, and a lid 7 is provided in the rear part of the main body 2. installed.

The adapter 8 is removably attached to the front side of the main body 2 with a space g ₂ formed between it and the outer peripheral surface of the protruding portion 3 of the main body 2, and a sound output hole 9 is provided at the tip of the adapter 8. It is being

One end (not shown) of the sound pipe 10 is connected to an external speaker (not shown), and the other end 11 is connected to the main body 2.
The outlet 12 of the flexible sound conduit 10 is inserted into the lower part of the
is connected to the internal space G of the main body 2.

Further, the flexible tube 14 containing the lead wires 13a, 13b is inserted into the main body 2, and the lead wires 13a, 13b are inserted into the main body 2.
13b is connected to the vibration pickup element 1 via an impedance converting semiconductor.

The embodiment shown in FIG. 2 has almost the same construction as the previous embodiment, but the other end 11 of the sound pipe 10 is fixed to the front part of the main body 2, and the outlet 12 of the sound pipe 10 is connected to the space _g2. We are in continuous contact.

Note that 16 in the figure indicates 1 to 5, preferably 2, through holes.

The material of the adapter used in the present invention may be polyethylene, noryl resin, silicone rubber, polypropylene, ABS resin, metal, or the like. The shape of this adapter is not limited to the one shown in the figure, but the entire ear canal attachment part is tapered, the entire ear canal attachment part is cylindrical or cylindrical, and the tip is approximately spherical or semicircular. etc,
Various shapes can be used.

The ear microphone according to the present invention is worn by inserting the adapter 8 into the ear canal 15 and bringing at least a portion of it into close contact with the wall of the ear canal. Bone conduction audio signals transmitted to the wearer's own external auditory canal wall are picked up by the vibrating pickup element 1, and the output current is taken out to the outside via lead wires 13a, 13b and can be transmitted.

The sound transmitted from the speaker passes through the sound conduit 10, and in the embodiment shown in FIG.
, and enters the space g ₂ through the through hole 6, and in the embodiment shown in FIG.
g ₂ , and from the sound output hole 9 of the adapter 8 to the ear canal 1
5 and reaches the eardrum and can receive the call.

Note that the adapter 8 can have one or more sound output holes 9, and if earwax or the like gets into the sound output hole 9 when it is attached to the ear canal, remove the adapter 8 from the main body 2 and remove the earwax or the like. be able to.

Since the present invention has the above-mentioned structure and operation, it not only achieves the first and second objects of the present invention described above, but also can exhibit the following functions and effects. In other words, [] In the present invention, the adapter that is attached to the ear canal is detachably attached to the main body, and the adapters can be exchanged. Therefore, if you prepare several types of adapters with different outer diameters and lengths, you can easily use them. users can select adapters that fit well,
It is also extremely hygienic because the adapter installed by someone else can be replaced with a new adapter.

[] Furthermore, since a space is formed between the adapter and the protruding part of the main body, and the space communicates with the outlet of the sound pipe, the sound from the speaker comes out from the exit of the sound pipe and passes through the space. It is easy to adopt a configuration in which the sound exits from the adapter's sound output hole and reaches the eardrum to receive the voice. Since the ear microphone can be used as a passageway, the ear microphone can be further downsized and productivity can be improved.

[] The vibrating pick-up element is built into a protruding part of the main body, and the adapter can protect this part by enclosing it, thereby preventing earwax etc. from adhering to the vibrating pick-up element.

[] When earwax gets into the space between the adapter and the protruding part of the main body, cleaning can be done easily and completely by removing the adapter, and if the adapter is damaged, maintenance can be done by replacing it. It is easy to deal with this problem because all you have to do is

[Brief explanation of the drawing]

1 and 2 are cross-sectional views of ear microphones showing different embodiments of the present invention. In the figure, 1 is a vibration pickup, 2 is an ear microphone body, 3 is a protruding portion, 8 is an adapter, 9 is a sound exit hole, 10 is a sound pipe, and g ₁ , g ₂ , and G are spaces, respectively.

Claims (1)

[Scope of Claims] 1. A vibrating pickup-type ear microphone that picks up bone conduction audio signals from the wall of the external auditory canal using a vibrating pickup built into the ear microphone body, wherein the vibrating pickup is a protrusion on the front side of the ear microphone body. An adapter that is built into the shaped part and comes into contact with the wall of the ear canal is detachably provided on the front side of the ear microphone body with a space formed between it and the outer peripheral surface of the protruded part. Features a vibrating pick-up ear microphone. 2. The ear microphone body is configured to have an air conduction type reception system for sending and receiving calls, and the adapter has a sound output hole at its tip, and the air conduction sound of the reception system is The vibrating pickup type ear microphone according to claim 1, wherein the sound is emitted from the sound exit hole through a space between the adapter and the protruding portion.