JPH08331220A - Telephone set - Google Patents

Abstract

PURPOSE: To use the telephone set even at a noisy place without holding it with hands by providing a bone conductive microphone, earphone and equalizer at one of plural receivers connected to a branching device at least. CONSTITUTION: When a telephone call is incoming, a bell at a main body 5 of the telephone set is rung. When it is desired to speak while using a receiver 6, the receiver 6 is picked up as it is and used similarly to an ordinary telephone. When it is desired to use a receiver 16, a bone conductive microphone 2 and an earphone 1 are mounted on ears and a changeover switch 8 of a casing 3 is turned on. Afterwards, it is enough only to ordinarily speak and even when it is noisy around a user, it is not necessary to loudly speak. The level of voices is controlled by a volume 7 as needed. An amplifier and the equalizer are built in the casing 3, voice quality is corrected for providing more natural voices and an electric signal is amplified to a fixed level.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telephone having a plurality of receivers.

[0002]

2. Description of the Related Art Generally, a telephone comprises a main body and a receiver connected to the main body. The handset is equipped with a speaker for listening to the other party and a microphone for transmitting the story to the other party, and a holding part of about 15 cm is placed so that they are near the user's ear and mouth when using. It is arranged at both ends of the handset through. Therefore, the user needs to hold the handset while holding the handset to talk.

[0003]

[Problems to be Solved by the Invention] Companies and offices often search for materials, operate a personal computer, or take notes during a telephone call. In such a case, it is inconvenient not to use both hands. Conventionally, in such a case, it has been dealt with by bending the neck and sandwiching the handset between the shoulder and the chin, but if the user is not used to the handset, the handset may be displaced or the handset may be dropped. In addition, in such an unnatural posture, searching for materials or operating a personal computer reduces work efficiency. Further, generally, the cord of the handset is wound in a coil shape and is stretched to some extent by pulling, but the cord has a force to return to the coil shape. Therefore, even if you try to pick up a material placed on a desk or a locker nearby, it is difficult to move with the handset held in place. Also, in a large office or factory where there are many telephones, it is difficult to hear the other party's voice due to other telephone sounds, conversations with others, machine sounds, and the like. Also, the microphone of the handset picks up these noises, making it difficult for the other party to hear the story. Therefore, the use of the telephone is restricted in such places,
It may be practically unusable. Therefore, there has been a demand for a telephone that does not need to be held by hand and can be used even in a noisy place.

[0004]

A telephone of the present invention comprises a branching device (4) for branching a plurality of connection cords from a telephone body (5) to a receiver, and a plurality of branching devices connected to the branching device (4). The receiver is characterized in that at least one receiver (16) is provided with a bone conduction type microphone (2), an earphone (1) and an equalizer.

[0005]

In the telephone of the present invention, a branching device (4) is provided between the telephone body (5) and the receiver. As a result, it is possible to connect two or more handsets to one telephone body. At least one of the plurality of handsets (16) connected to the branching device (4) is shaped like headphones of headphones stereo, and one ear has a bone conduction microphone.
Wear (2) and earphone (1) on the other ear before use. Therefore, since it is not necessary to hold the handset by hand, both hands can be used freely.

[0006] The bone conduction microphone (2) has one end inserted into the ear canal and an encapsulant (12) having an inserter (11) for receiving the audio signal of the ear canal transmitted from the mouth through the bone tissue. ,
A holding material (13) fixed in the envelope (12) and the holding material
The piezoelectric element (14) has one end fixed to (13) and the other end protruding in the inserter, and a lead wire for leading out a polarization voltage of the piezoelectric element (14).

According to this, the bone vibration of the outer ear that occurs when a voice is emitted can be transmitted to the piezoelectric element, and a polarization voltage can be obtained from the piezoelectric element via the lead wire in accordance with the occurrence of strain due to this vibration. This voltage is reproduced again as voice through an amplifier or the like, the necessary sound quality correction is performed, and the result is output to a speaker for listening.

When the bone conduction type microphone is used, external noise is not input to the microphone, and the user's voice can be clearly transmitted to the other party regardless of the ambient noise. Also, the other party's voice comes into the ear directly from the earphones, so that the other party's voice can be clearly heard even if the surroundings are noisy.

[0009]

EXAMPLES The present invention will be described below with reference to preferred examples. [Embodiment 1] FIGS. 1 and 2 are views showing an example of the configuration of a telephone of the present invention, and FIG. 3 is a branching device (4) used in the present invention.
It is the figure which showed an example. Switch (4) on the telephone body (5)
The first handset (6) and the second handset (16) are connected via. (15) is the connection cord for the first handset (6), (9)
Is a connection cord for the second handset (16).

The branching device (4) has one input section (4A) and two output sections (4B) and (4C). The output from the telephone main body side output unit (5a) is connected to the input unit (4A) through the connector (4a). The connection cord (9) to the second handset is connected to the output part (4B) by the connector (4b), and the connection cord (15) to the first handset and the connector (4) are connected to the output part (4C). Connected by 4c).

The second handset (16) comprises an earphone (1), a bone conduction microphone (2) and a casing (3) as main parts. An amplifier and an equalizer are built in the casing (3). In the case of bone conduction, not the sound that passes through the vocal cords, but the voice heard by the other party becomes unnatural sound as it is, so the sound quality is corrected by the equalizer to make it more natural and the electric signal is sent by the amplifier. It is amplified to a certain level. A volume (7) and a changeover switch (8) are provided on the surface of the casing (3). The casing (3) is connected to the earphone (1) by the connection cord (10a) and is connected to the bone conduction microphone (2) by the connection cord (10b).

In the figure, (11) to (14) are bone conduction microphones.
Details of (2), (11) inserter, (12) encapsulant, (13)
Is a holder, and (14) is a piezoelectric element.

When receiving a telephone call, the telephone body (5)
The bell rings. If you want to talk on the first handset (6),
The first handset (6) can be picked up as it is and used in the same manner as an ordinary telephone. If you want to use the second handset (16), attach the bone conduction microphone (2) and earphone (1) to your ear, and set the changeover switch (8) of the casing (3) to "O".
N ". All you have to do is speak normally, and you don't have to speak out loud, even if the surroundings are noisy. The volume can be adjusted by the volume 7 as needed.

Since the second handset 16 is held by both ears, both hands can be used freely even during a call. In addition, if the length of the connection cord (9) is made somewhat longer,
In that range, it is possible to move with the handset (16) still attached, which is convenient for collecting nearby materials. In this embodiment, the first handset (6) and the second handset (6)
It is connected in parallel with the other handset (16) and a line switch circuit is provided separately, so when one handset is in the "OFF" state (the first handset (6) is not connected to the telephone body (5)). Even if you put it in the handset area or turn off the switch (8) of the second handset (16), the telephone line remains connected and both handsets are turned off. I am trying to disconnect the telephone line.

[Embodiment 2] When the second handset (16) is attached, the left and right ear holes are closed, but when used at a construction site, etc., it is dangerous because ambient sounds do not directly enter the ears. There is. Therefore, another embodiment of the present invention was manufactured in consideration of use in such a place. The configuration is the same as that of the first embodiment except that the earphone (1) has a through hole. This through hole is a small-diameter hole that penetrates the earphone (1) for guiding ambient sound into the external ear hole, and in the present embodiment, has a diameter of 0.7 mm.

[Third Embodiment] A slide type shutter provided in the through hole of the second embodiment is manufactured. The through hole had a diameter of 2 mm. Sliding shutter is earphone (1)
It is provided externally and can be easily opened and closed with one hand when worn. When the surroundings are noisy, you can concentrate on the call by closing the shutter completely, and if you want to hear the surrounding sounds to some extent, open the shutter halfway to introduce some external sounds to your ears. Furthermore, if the shutter is fully opened, it is possible to talk with a person other than the caller during use, which is convenient when consulting with people around the user during a call.

[Embodiment 4] A telephone similar to that of Embodiment 1 was manufactured except that a clip was provided on the back surface of the casing (3). The casing (3) itself is not very heavy,
When moving while wearing the second handset (16), the clip provided on the casing (3) is put in a pocket of clothes or the like to reduce the weight burden on the ear holding the handset (16). Can be made.

[Embodiment 5] In a company, office, etc., 1
Multiple people often use a single telephone. At that point, since the bone conduction microphone (2) is inserted relatively far into the ear canal, it may be a sanitary problem if a plurality of people use the same handset (16). Therefore, in this embodiment (not shown), the output of the branching device (4) is three, and the third output is connected to the third handset having the same configuration as the second handset. This allows the caller to use their own handset,
Hygiene problems are reduced. Furthermore, even if a person sitting in a seat a little away from the telephone body (5) does not need to rush to the telephone body (5) when the telephone bell rings, there is no need for a dedicated handset at hand. Work efficiency is improved because all that is required is to put it on and press the switching button (8).

[0019]

According to the present invention, since it is not necessary to hold the handset by hand even during a telephone call, both hands can be used freely. In addition, it is possible to make a call even in a place where the surrounding noise is large. Further, if the earphone is provided with a through hole, it is possible to hear the surrounding sound during the call.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a telephone according to the present invention.

FIG. 2 is a diagram showing a configuration of a telephone according to the present invention.

FIG. 3 is a diagram showing a branching device used in the present invention.

[Explanation of symbols]

 (1) Earphones (2) Bone conduction microphone (3) Casing (4) Branch device (5) Telephone main unit (6) First handset (main unit side handset) (7) Volume (8) Handset switch (9) ) Second handset cord (15) First handset cord (16) Second handset

Claims (3)

[Claims] 1. A branching device for branching a plurality of cords from a telephone body to a receiving device, and a plurality of receiving devices connected to the branching device, wherein at least one receiving device includes a bone conduction microphone, an earphone and an equalizer. A telephone that is equipped with. 2. The telephone set according to claim 1, wherein the earphone is provided with a through hole. 3. The telephone according to claim 2, wherein the through hole is provided with a shutter that can be opened and closed.