JPS6349985Y2 - - Google Patents

Description

[Detailed description of the invention] This invention uses a headphone and a bone conduction microphone to make it possible to receive and send calls without inputting external noise, and at the same time allows external sounds to be heard directly with one ear. This device relates to a handset and is characterized in that it can be placed on the user's head in any direction depending on the user's preference, dominant ear, etc.

Conventionally, hands-free voice-controlled transceivers have been used for conversations between multiple people at distant locations in construction sites, workplaces, group activities at schools, etc., and foreign language learning devices have been used to communicate with parents. A handset with a headphone and a microphone attached to the headband is used for conversation between a specific learner and the teacher through the handset and slave device.

However, in the case of the handset and receiver mentioned above, all external noises existing in the external environment are input to the microphone along with the voice emitted from the mouth, and as a result, the side receiving this voice input hears the voice mixed with noise. You will be able to hear sounds that are difficult to hear. For this reason, there has been a problem that, for example, in a work site where industrial machinery, civil engineering machinery, etc. are in operation, the above-mentioned handsets cannot function satisfactorily for business-related conversations.

Further, in the voice control type transceiver, the above-mentioned noise causes problems such as erroneous control of switching between transmitting and receiving, and making it impossible to make a telephone call. In other words, when transmitting and receiving calls, there is a problem in that the voice-to-noise ratio on the transmitting side is reduced, making it impossible to receive calls.

On the other hand, in response to this, ear plug-type bone conduction microphones that are inserted into the external ear canal have been provided. The bone conduction microphone transmits bone vibrations to a piezoelectric element through an encapsulating body having an inserter that receives sound vibrations in the external auditory canal, and a polarization voltage is generated from the piezoelectric element via a lead wire in response to the generation of strain caused by this vibration. This voltage is then reproduced as sound through an amplifier or the like, and after performing necessary sound quality corrections, it can be output to earphones or headphones for listening.

Therefore, external noise is not input to this bone conduction microphone along with the audio signal.
Only clear audio can be heard.

However, when an earplug-type bone conduction microphone as described above is attached to a handset together with headphones as described above, the headphones and the bone conduction microphone block the left and right ear holes, respectively. This means that when used at a construction site or the like, outside voices and other noises from on-site work will not reach the ears directly, which is extremely dangerous.

Therefore, with this invention, you do not have to block both ears, and you are not bothered by external sounds and noise.
To provide a handset and receiver that allows conversation with clear audio, and is configured so that it can be placed on the user's head in any direction depending on the user's preference, dominant ear, etc.

An embodiment of the present invention will be described in detail below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes an elastic headband, and holding members 2 and 2a made of synthetic resin are attached to both ends of the headband 1. One of the holding members 2 has a sliding adjustment rod integrated with the headphone 3. 4 is inserted and held with a certain contact resistance,
As shown in FIGS. 2 and 3, the other holding member 2a has an upper end of a sliding adjusting rod 5 having symmetrical bifurcated ends 5a and 5b, which is inserted and held with contact resistance.

The ends of the forks 5a and 5b of the sliding adjustment rod 5 have a bone that should come into contact with the temporal region behind the ear (a part called the temporal mastoid process or the lower edge of the temporal bone...the same applies hereinafter). A detachable portion for the conductive microphone 6 is configured respectively.

In the illustrated embodiment, the attachment/detachment portion of the bone conduction microphone 6 is comprised of holes 7, 7a having the same diameter.

A resilient protrusion 8 made of rubber or the like is provided on the back surface of the bone conduction microphone 6 to fit tightly into the holes 7 and 7a. However, two forks 5a, 5b
The elastic protrusion 8 may be configured to have a rod-like shape, with a small hole provided in the elastic protrusion 8 so that it can be inserted tightly.

The elastic protrusion 8 may be attached to the back surface of the bone conduction microphone 6, but in the case of the embodiment shown in the drawings, the elastic protrusion 8
As shown in the figure, the bone conduction microphone 6 is constructed integrally with an elastic material 8a such as rubber provided on the circumferential surface and the back surface of the bone conduction microphone 6, and the elastic material 8a is made to protrude slightly around the front surface of the bone conduction microphone 6, and the elastic material 8a is made to protrude slightly around the front surface of the bone conduction microphone 6. When the head is brought into contact with the head, it is configured so that it comes into close contact with the temporal region of the head, preventing external noise from entering.

Therefore, regarding the bone conduction type microphone 6 which is placed in contact with the temporal region behind the ear, as shown in Fig. 6, it is placed inside a synthetic resin housing 9 having a U-shaped cross section so as to close the opening. A flexible diaphragm 10 is stretched, and a piezoelectric element 11 is pasted to one side of the diaphragm 10, which causes distortion in the crystal as the diaphragm vibrates.

Note that this piezoelectric element 11 is polarized by the occurrence of the above-mentioned strain, and the polarization voltage is transmitted from the diaphragm 10 and the piezoelectric element 11 to the lead wire 12 through a resistor and a semiconductor circuit.
It can be taken out by

Reference numeral 16 designates an acoustic vibration transmission plate having a protrusion 13 fixed to the other side of the diaphragm 10, and is designed to come into close contact with the temporal region behind the ear.

14 is a shield plate that cuts out external electrical noise.

Further, in the figure, reference numeral 15 denotes a patch plate made of an elastic material such as rubber, which comes into contact with the front part of the ear.
On the back side of the plate 15, there is a bifurcated protrusion 5 similar to the elastic protrusion 8 provided on the back side of the bone conduction microphone 6.
Resilient protrusions 15a are provided that fit tightly into holes 7, 7a at the tips of tips a, 5b.

With the handset and receiver of the present invention having the above configuration, the headphone 3 can be placed either in the right ear or the left ear, depending on the user's preference, dominant ear, etc.

In that case, a bone conduction microphone 6 is attached to one of the forks 5a and 5b of the sliding adjustment rod 5 at the other end, that is, to the temporal region behind the ear.
It is only necessary to attach the patch plate 15 to the remaining other side, that is, the front side of the ear.

As mentioned above, in the present invention, a headphone is attached to one end of the headband, and the other end is bifurcated, and a detachable part for a bone conduction microphone that comes into contact with the temporal region behind the ear is provided at each end. As a result, it is possible to receive and send calls without inputting external noise, and at the same time, it is possible to directly listen to external sounds with one ear, and it can be adjusted according to the user's preference, dominant ear, etc. It is possible to obtain the effect that the head can be set on the head regardless of the direction of the head.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a front view partially cut away, Fig. 2 is a side view of the bone conduction microphone mounting part, Fig. 3 is a plan view thereof, and Fig. 4 is a partially sectional front view. The figures are a sectional view taken along line AA in FIG. 2, FIG. 5 is a sectional view taken along line BB in FIG. 2, and FIG. 6 is a sectional view of the bone conduction microphone. 1...Headband, 3...Headphone, 5,
5a...bifurcated, 6...bone conduction microphone,
7, 7a...hole, 8...elastic protrusion.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A headphone is attached to one end of the headband, and the other end is bifurcated, and a bone conduction microphone is attached to the tip of each of the two ends, which is to be brought into contact with the temporal region behind the ear. A handset characterized by comprising a detachable part. (2) The handset according to claim 1, wherein each of the detachable parts is a hole.