JPS5850710Y2 - Sound conduction tube for handset using ear microphone - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a sound guide tube suitable for use in a handset using a vibration pickup type ear microphone.

The vibration pickup type ear microphone picks up bone conduction audio signals from the wall of the external auditory canal, and is known as a technique described in Japanese Patent Publication No. 53-39763 and the like.

This ear microphone also includes air groove type speakers (sound pressure type earphones).

same as below. ) was also used in 1986-208 to make it possible to send and receive calls with one ear.
This is a known technique as described in No. 98 and Japanese Utility Model Application Publication No. 53-38322.

In the case of handsets that use this ear microphone, there are two types: an air groove speaker built into the ear microphone, and another where the air groove speaker is placed outside the ear microphone and the system beaker output is transmitted through a sound conduction tube. A type of in-ear microphone is known.

In the case of the latter type of handset, the speaker can be housed in an ear-hook case behind the ear shell, a helmet-mounted case, or a portable radio, and the speaker and ear microphone are connected by a sound-conducting tube. do.

At this time, if the sound guide tube is too long and hangs down, the ear microphone will pick up vibrations caused by the sound guide tube swinging or colliding with other objects (for example, a part of the body), causing noise. There are some drawbacks such as:

Therefore, an object of the present invention is to provide a sound guide tube for a handset using an ear microphone, which can meet the following requirements (1) to (2).

■ Even if the air groove speaker connected to the ear microphone is installed on a lever, the sound guide tube can be adjusted to the appropriate length.

■ The distance between the ear microphone and the air groove speaker is
Although it differs depending on the gender of men and women, adults and children, body size, and race, the sound guide tube can be adjusted to an appropriate length even in this case.

■ When transmitting the output of the ear microphone using a radio device, etc., it is necessary to connect the lead wire to the radio device, etc. In that case, as in ■ and ■ above, it is necessary to adjust the lead wire to an appropriate length. It should also be possible to prevent the pick-up of noise caused by this lead wire.

■ Connect the ear microphone to any type of case that has a different mounting location, such as an ear-hook case, a helmet-mounted case, or a portable radio device, after adjusting the appropriate length of the lead wire and sound guide tube. This enables one ear microphone to be used for multiple purposes.

■ The sound guide tube should be easy to carry and transport.

■ Even if a part of the sound guide tube is damaged, only that part can be replaced.

It is easy to clean the O sound guide tube, especially the sound guide path,
Being able to hear clear sound at all times.

■ Durability is improved because the sound guide tube is too long and will not bend or bend.

Hereinafter, the present invention that achieves the above object will be explained based on representative embodiments shown in the drawings.

In each figure, reference numeral 1 denotes a vibration pickup type ear microphone for transmitting and receiving calls that is attached to the ear canal, picks up bone conduction audio signals transmitted to the ear canal wall, and also introduces the output of an air groove speaker 2. You can hear the received sound.

Reference numeral 3 denotes a sound guide tube that integrates a lead wire 4 for deriving the output of the ear microphone 1, and includes a sound guide path 5.
has.

Reference numeral 6 denotes a portable radio device with a built-in air groove type speaker 2, which transmits the output of the ear microphone 1 to the outside and receives the output to the air groove type speaker 2.

The sound guide tube 3 according to the present invention includes a plurality of tube pieces 3
Each tube piece 3A, 3A, . . . has a connector 6A, which connects the sound conduction path 5 and the lead wire 4, at both ends thereof.
It has 6B.

In addition, in order to integrate the lead wire 4 into the sound guide tube 3 according to the present invention, as shown in FIGS. 2 and 3 1 or 4 or 5, each tube piece 3A, 3A, ...(Including sound conduction path 5.

) may contain the positive electrode 4A and negative electrode 4B of the lead wire 4, or may contain at least one of both 4A and 4B.

Furthermore, the vibration pickup type ear microphone 1 used in the present invention may be of any type as long as it can be connected to the connector 6A or 6B.

For example, as shown in FIG. 6, a vibration pickup 8 such as a piezoelectric element and a sound guide 9 are provided on a miter body 7 that can be inserted into the ear canal, and a sound guide body 7 is provided so as to be connectable to a connector 6At or 6B. It is possible to use a connector provided with a connector 1OA and a connector 10B for the lead wire.

As for the microphone 1 itself, the connector 10A is like this.

10B, and the conventional long drawn-out sound guide tube and lead wire can be omitted, so the durability, portability, etc. of the microphone 1 are also improved.

The operation of the present invention having the above configuration is as follows.

By putting the ear microphone 1 into one side of the ear canal, storing the radio device 6 having the speaker 2 in a breast pocket, etc., and connecting an appropriate number of tube pieces 3A, 3A, . . . between the two. , electrically and acoustically connected.

The output of the ear microphone 1 is introduced into the radio device 6 through the lead wire 4, and is transmitted to the outside.

On the other hand, the received signal from the radio device 6 is outputted as sound by the speaker 2 and introduced into the ear microphone 1 through the sound conduction path 5.

In the above explanation, even when a case is used for ear hooks or a case for helmet mounting in place of the portable radio device 6, the speaker is stored in the case and each tube piece 3A is used.

By adjusting the number of connections of 3A, . . . , the received sound can be heard through the sound conduction path 5 in the same way as above, and the output of the ear microphone 1 can be introduced into the case via the lead wire 4 and processed. .

Since the present invention has the above-mentioned structure and operation, the above-mentioned
All objectives of ~■ can be achieved.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing an example of the use of the sound guide tube according to the present invention, Fig. 2 is a two-part cutaway front view of the tube piece, Fig. 3 is a sectional view taken along the line ■-■ of the same figure, Fig. 4, and FIG. 5 is a longitudinal sectional view showing another embodiment of the tube piece, and FIG. 6 is a longitudinal sectional view showing →I of the ear microphone used in the present invention. In the figure, 1 is an ear microphone, 2 is a speaker, 3 is a sound guide tube, 3A, 3A, ... are tube pieces, 4
5 indicates a lead wire, 5 indicates a sound conduction path, and 6A and 6B indicate connectors.

Claims (1)

[Scope of utility model registration request] A sound guide tube for a handset, which is formed by integrating a lead wire of a vibration pickup type ear microphone into a sound guide tube having a sound guide path, wherein the sound guide tube is divided into a plurality of tube pieces; A sound guide tube for a handset using an ear microphone, characterized in that each piece has connectors at both ends thereof for connecting the sound guide paths and the lead wires.