JPS645416Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a telephone hearing aid booster, and in particular, to a telephone hearing aid booster for making calls using a hearing aid by electromagnetic induction using leakage magnetic flux from a telephone. .

A system in which a hearing-impaired person uses a hearing aid to listen to a phone call using electromagnetic induction is useful in that it eliminates listening interference caused by surrounding noise and allows the user to communicate with good sound quality. However, as telephones have improved in recent years, the number of lines of magnetic force leaking from the telephone has significantly decreased.
Therefore, the current penetration rate is thought to be over 90%6.
It is becoming increasingly difficult for people with hearing loss to make calls using a telephone with a hearing aid induction coil. This is particularly noticeable in behind-the-ear hearing aids.

This invention was made with attention to the above points, and the purpose is to provide a telephone hearing aid booster that compensates for the lack of leakage magnetic flux caused by improvements in telephones and supplies sufficient sound magnetic waves to hearing aids. It is something.

In addition, the purpose of this invention is to efficiently pick up leakage magnetic flux from the phone and remove unnecessary electromagnetic waves other than calls, so that the amplified electromagnetic wave signal is received by the induction coil of the hearing aid. An object of the present invention is to provide a telephone hearing aid booster having a configuration in which the output is emitted to the outside by an output coil.

Another object of this invention is to provide a telephone hearing aid booster that is small and lightweight so that it is convenient to carry and easy to use, and that has a measure against forgetting to turn off the power switch.

This invention will be described below with reference to an embodiment shown in the drawings. In Fig. 1, a filter 2 that removes magnetic noise other than call signals is connected to a pick-up coil 1 that captures the leakage magnetic flux of the telephone, and an amplifier 3 that emits the audio magnetic waves amplified by the amplifier 3 to the outside. Connect the output coil 4. A switch 6 is connected to a battery 5 that drives the amplifier 3. Such a wire connection is constructed as shown in FIG. That is, a pickup coil 1, a filter 2, an amplifier 3, a battery 5, and a switch 6 are built into the main body case 7, and the other end of the cord 8 led out from the output end of the amplifier 3 is embedded in a hook 9 that is convenient for hanging over the ear. Connect the output coil 4. The main body case 7 is provided with an actuating plate 10 for automatically opening the switch 6 by winding the cord 8 around the main body case 7 when the device is stored in a pocket. Reference numeral 11 indicates a lid of a battery chamber for housing the battery 5, and reference numeral 12 indicates a pilot lamp for displaying the energization operating state.

Next, the operation will be explained. 3 and 4, when in use, the main body case 7 is attached to the main body 1 of the phone.
3 or the side surface of the main body 13 where the leakage magnetic flux is relatively large. The hook 9 in which the output coil 4 is embedded is attached to the rear part of the auricle 15 in close proximity to the behind-the-ear hearing aid 14. Since the behind-the-ear hearing aid 14 has a built-in induction coil (not shown), it is possible to hear the call sound corresponding to the audio magnetic waves from the telephone 13 using the hearing aid 14 .

As described above, this invention focuses on the fact that telephone listening cannot be achieved adequately using only the listening means of the induction coil of a hearing aid, and can be considered a kind of magnetic wave booster that enhances the leakage audio magnetic waves from the telephone and sends them to the hearing aid.

In the above embodiments, the output coil is embedded in the hook, but the manner in which the output coil is held is not limited to this, and various configurations may be used.

According to this invention, we were able to confirm an example of a person with severe hearing loss who was able to make and receive clear calls to his or her home for the first time by applying this device to a public telephone with less magnetic wave leakage than a No. 6 telephone.

[Brief explanation of the drawing]

FIG. 1 is a wiring diagram of an embodiment of this invention, FIG. 2 is a schematic perspective view of the structure, FIG. 3 is a perspective view of the device in use, and FIG. 4 is a rear view of the main parts. 1...Pickup coil, 2...Filter,
3...Amplifier, 4...Output coil, 5...Battery,
6... Switch, 7... Body case, 8... Cord, 9... Hook, 10... Operating plate.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A main body case housing a pick-up coil for capturing leakage magnetic waves of the telephone, an amplifier connected to the pick-up coil via a filter for removing magnetic noise, and a power battery; A telephone hearing aid booster comprising an output coil connected to the output of the amplifier by a cord led out from the main body case. (2) The telephone hearing aid booster according to claim 1, wherein the output coil is embedded in an ear hook. (3) The telephone hearing aid booster according to claim 1, wherein the main case is provided with an operating means for opening the battery switch by winding a cord around the main case.