JPH0453396A - Ear microphone for simultaneous transmission and reception - Google Patents

Abstract

PURPOSE:To attain two-way talking with a person placed at a remote location without interruption of a job of the person by forming a contact face with an external ear conduction wall by a nonmagnetic metallic electrode layer. CONSTITUTION:Two poles of nonmagnetic metallic electrode layers 4,6 with insulation layers 3, 5 inbetween are used for a contact face with an external ear conduction wall, and a signal detected by bone conduction vibration is connected to a vibration electric conversion element interconnected with a communication device through a lead wire. The ear microphone 1 is inserted to one ear and bone conduction is utilized to attain 2-way communication and both hands are used for other purpose. Thus, the two-way communication with a person placed at a remote location is attained without interruption of the job of the person even at a site of a construction work or a factory under a high level noise. Thus, the most convenient simultaneous transmission reception ear microphone is realized.

Description

Detailed Description of the Invention: "Industrial Application Field" The present invention is applicable to banks, stock exchanges, offices, etc. under external noise.
It is possible to have two-way conversations with A equipment operators and people who are located remotely at construction sites, etc., without interrupting work.

In other words, it is a simultaneous transmitting and receiving ear that electrically converts bone conduction audio signals from the external ear conduit wall to transmit audio, and also guides the audio sent from an external receiver to the external auditory canal via a sound conduit. Concerning microphones.

``Prior art'' In general, ear microphones for simultaneous transmission and reception that are integrated with a sound pipe can withstand use under external noise and have been put into practical use.
There was no such thing as being able to make two-way calls with one ear.

That is, under noisy conditions, the sound signal level increases through the sound pipe and due to mechanical acoustic coupling, the sound signal enters the vibroelectric transducer and approaches other sound levels.

Therefore, it was decided to install an automatic voice transmission/reception switching device.

Furthermore, in two-way communication (single carrier frequency), malfunctions are likely to occur due to voice signals, and manual switching is required.

Further, in two-way communication using two carrier frequencies, whether wireless or wired, due to mechanical acoustic coupling, howling occurs as the reception level increases, often making communication impossible.

``Object of the Invention'' The present invention has been made by focusing on the above-mentioned actual situation, and while freeing both hands by eliminating the interlayer,
The purpose of the present invention is to provide an ear microphone for simultaneous transmission and reception, which enables telephone calls.

"Means for Solving the Problem" In order to achieve this object, the ear microphone for simultaneous transmission and reception according to the present invention has a contact surface with the ear canal wall composed of two non-magnetic metal electrode layers sandwiching an insulating layer. [Function] By having the above-mentioned structure, the ear microphone for simultaneous transmission and reception can be used. By inserting the Koneden 8 into one ear, you can make two-way calls and free up both hands, so there is no need to interrupt your work to make a call, and you can continue working while talking. I can do it. In addition, since it has a structure that can withstand use even under noisy conditions, it is inexpensive and easy to use without causing howling or failure.

[Embodiments of the invention] Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a longitudinal cross-sectional view of an ear microphone for simultaneous transmission and reception according to the present invention.

FIG. 2 is a sectional view of the nozzle part. In these figures, 1 is the main body of the ear microphone for simultaneous transmission and reception, and 2 is the nozzle part of the main body.

On the surface of this 2, an insulating layer (1) of 3 is arranged, which picks up the audio signal from the wall of the external auditory canal and constitutes a vibroelectric conversion layer.4 a magnetic metal electrode layer (I), 5 an insulating layer (2), 6.
It has a structure in which three layers of nonmagnetic metal layer (II) are surrounded and protected by layers 2 and 3. The connection between this vibrating electrode conversion layer and the shield wire 9 is made by passing 1 through 1 at one end and connecting it to 6, 4 passing through 1 in the same way, and leaving a part of 1 in 3 as an 8 electrode outlet by removing it in advance, and the other end. After connecting, it will be hardened with silver paste, etc.

This configuration allows the voice to be transmitted to the other party.

Also, 10 is the shield wire, 11 is the pole piece, and 12
A magnet and 13 voice coils are placed inside. or,
One end from 10 is connected to] 3, and the other end is wired to 14 diaphragm (magnetic material), so that the signal sent from 10 is transmitted as sound to the eardrum through the 7 tone holes. In this way, an ear microphone for simultaneous transmission and reception of an integrated earphone and microphone can be created.

In other words, the vibration-electric conversion layer that picks up bone conduction signals from the ear canal wall is a non-magnetic metal electrode layer, so there is no feedback or switching device when used with magnetic earphones, ceramic earphones, or crystal earphones with piezoelectric elements (piezo). This makes it possible to create a good ear microphone for simultaneous transmission and reception.

Another feature of this product is that it has an open external air inlet (115), which is not present in conventional products, allowing air to flow in from the outside to protect against inflammation caused by sweating.

``Effects of the Invention'' As mentioned above, the earphone microphone for simultaneous transmission and reception according to the present invention allows two-way communication with people in remote locations without interrupting work, even in noisy construction sites, factories, etc. It has now become possible to provide an ear microphone for simultaneous transmission and reception that is durable, practical, very inexpensive, and trouble-free.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of an ear microphone for simultaneous transmission and reception according to the present invention. FIG. 2 is a sectional view of the nozzle section. 1. Ear microphone for simultaneous transmission and reception 2. Nozzle part 3. Insulating layer 4, nonmagnetic metal electrode layer 5. Insulating layer 6, nonmagnetic metal electrode layer 7. sound hole

Claims (1)

[Claims] An ear microphone for simultaneous transmission and reception, characterized in that the contact surface with the outer ear conducting wall is a non-magnetic metal electrode layer.