JPH0411401Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a hearing aid telephone adapter which is attached to a telephone handset and which allows a hearing aid user to listen to telephone calls.

BACKGROUND OF THE INVENTION FIG. 2 shows a conventional hearing aid telephone adapter. The configuration of the conventional example will be explained below with reference to FIG. In FIG. 2, reference numeral 1 denotes a case made of a resin material, in which an opening 2 is provided. 3 is a rubber material having a hole 4 and fixed on the aperture 2; 5 is a microphone; 5' is a sound hole for the microphone 5 facing the aperture 2; 6 is a printed circuit board fixed in the case 1;
7 is an amplifier circuit provided on the printed circuit board 6, and is electrically connected to the microphone 5.
8 is an output coil connected to the amplifier circuit 7 and provided on the printed circuit board 6, and 9 is a fixing band. In use, the device is fixed to the handset with the band 9 so that the hole 4 is located at the earpiece of the handset. Sound generated from the earpiece of the handset is picked up by the microphone 5 and converted into an electrical signal. The electrical signal is amplified by the amplifier circuit 7 and output from the output coil 8 as magnetic flux. A hearing aid user can hear the voice from the telephone by using this output magnetic flux through an induction coil built into the hearing aid (not shown). In addition, for people who do not use hearing aids,
You can listen to the voice directly from the receiver through the receiver. This telephone adapter for hearing aids has recently been gradually reducing leakage magnetic flux from telephones due to improvements in telephones, and hearing aids alone cannot pick up leakage magnetic flux from telephone handsets and amplify them to an audible level. It has the ability to supply sufficient magnetic flux output to a hearing aid as an effective auxiliary device when a person makes a telephone call.

Problems that the invention aims to solve However, in the conventional example described above, when using a hearing aid, the sound from the telephone handset leaks out through the opening, which has disadvantages in terms of sound pressure received by the microphone and frequency characteristics. Ta.

The present invention improves the drawbacks of the conventional example described above, and aims to transmit as much signal from the telephone receiver as possible to the microphone when the hearing aid telephone adapter is attached to the telephone receiver.

Means for Solving the Problems In order to achieve the above-mentioned object, the present invention has a shutter that is pivotally attached to the case to open and close the through-sound hole provided in the center of the case as necessary.

Therefore, according to the present invention, it is attached to the handset of a telephone, and when the hearing aid user calls, the shutter is closed, and the sound from the earpiece of the handset can be captured without leakage, and the sound can be captured at maximum sensitivity. You can listen to the call tone. In addition, people who do not need hearing aids can open the shutter and listen directly through the sound hole.

Embodiment The configuration of one embodiment of the present invention will be described below.
This will be explained using figures. In FIG. 1, 10 is a case made of a resin material, etc., 11 is a through-sound hole provided in the center of the case 10, 12 is a rubber material fixed to the through-sound hole 11 of the case 10, and 13 is a case 10 is a printed circuit board fixed on the inside, 14 is a microphone fixed at the position of the hole 15 provided on the side wall approximately in the middle of the through-sound hole 11, 16 is an amplifier circuit fixed on the printed circuit board 13, and 17 is a printed circuit board. The microphone 14, the amplifier circuit 16, and the output coil 17 are electrically connected to each other. 18 is a fixing band. A shutter 19 opens and closes the through-sound hole 11, and is pivotally connected to the case 10 by a pivot 20.

By attaching the hearing aid telephone adapter configured as described above to the receiver of the handset using the band 18 and closing the shutter, the hearing aid user can transfer the magnetic flux from the output coil 17 into the hearing aid without leakage. It is possible to listen to the voice of the telephone by capturing it with an induction coil.

On the other hand, a person who does not use a hearing aid can open the shutter and listen to normal telephone sounds through the sound hole 11.

Effects of the invention As described above, according to the invention, since the through-sound hole and the shutter for opening and closing it are provided almost in the center of the case, when the hearing aid telephone adapter is attached to the handset, the hearing aid can be used easily. By closing the shutter, a person who does not use hearing aids can talk through the hearing aid without the sound leaking through the through-hole, and a person who does not use the hearing aid can open the shutter and listen to the sound coming from the through-hole. There is no need to attach or remove a hearing aid telephone adapter depending on the situation, and the sound from the telephone can be heard with high sensitivity, which is extremely effective in practical use.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a hearing aid telephone adapter according to an embodiment of the present invention, and FIG. 2 is a sectional view of a conventional hearing aid telephone adapter. 10...Case, 11...Through sound hole, 12...
Rubber material, 14... Microphone, 15... Hole, 1
7... Output coil, 18... Band, 19... Shutter, 20... Axis.

Claims (1)

[Scope of utility model registration request] A case having a through sound hole in the center, a hole provided in a side wall of the through sound hole, a microphone fixed at the position of the hole within the case, and an amplifier circuit and an output coil provided within the case. A hearing aid telephone adapter comprising: a fixing band attached to the case; and a shutter pivotally attached to the case to open and close the end of the through-hole.