JPH0737397Y2 - Hearing aid telephone listening device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a telephone listening device for listening to a telephone with a hearing aid.

[0002]

2. Description of the Related Art Conventionally, a method of listening to a telephone by a hearing aid is as follows.
As shown in FIG. 3, an electromagnetic induction effect is used. As shown in FIG. 3, the magnetic flux leaked from the handset 21 of the telephone is received by the induction coil 23 provided in the hearing aid 22 and converted into a voice current, which is amplified by the amplifier 24, and then the earphone 25 outputs it. I was getting voice output. Hearing aid 2
In addition, the microphone 2 is provided with a microphone 26, a battery 27, a changeover switch 28, an earhook 29 having a sound guide tube, an earplug 30, and the like. With such a device, it is possible to listen to the telephone while wearing the hearing aid 22 on the ear.

By the way, in recent years, the leakage flux has been thoroughly reduced in consideration of the progress of the telephone and the adverse effect on the peripheral equipment. With the conventional device utilizing the leakage flux of the telephone, the telephone can be heard. It's gone. Therefore, as shown in FIG. 4, an adapter 33 has been developed that can be easily inserted into the handset 31 by the belt 32 or the like. This is because the microphone 36 operated by the battery 35 provided in the case 34 converts the voice from the handset 31 into a voice current, which is amplified by the amplifier 37, and then the induction coil 3
The magnetic flux is leaked by flowing it to the induction coil 8 and received by the induction coil 40 in the hearing aid 39 to be converted into a voice current again. 3 and 4 show an example of an ear-hook type hearing aid, the hearing aid is not limited to the
There are types such as box shape and spectacle shape.

[0004]

Although it is possible to listen to a telephone using a hearing aid as in the conventional case by using the above-mentioned adapter, as long as the electromagnetic induction effect is used, leakage of commercial power sources and various electric products There is a problem that it becomes difficult to listen to the telephone because it is easily affected by the magnetic flux.

The present invention is intended to solve such conventional problems, and an object of the present invention is to provide a hearing aid telephone listening device which enables listening of telephone without utilizing electromagnetic induction.

[0006]

In order to achieve the above-mentioned object, the present invention inserts an adapter having a microphone, an amplifier and a light emitting element into a handset of a telephone, and outputs a voice signal of the handset as an optical signal by the light emitting element. It is converted into an audio signal by a light receiving element provided in the hearing aid, and is amplified and output from the earphone.

[0007]

Therefore, according to the present invention, since the electromagnetic induction effect is not utilized, the hearing aid can listen to the telephone satisfactorily without being affected by the leakage magnetic flux of the commercial power source and various electric products.

[0008]

1 shows an embodiment of the present invention. An adapter 3 can be fixed by a belt 2 to the handset 1 portion of the handset of the telephone. The adapter 3 includes a microphone 4 that receives a voice output from the handset 1, an amplifier 5 that amplifies the output of the microphone 4, and a light emitting diode 6 that converts the output of the amplifier 5 into an optical signal.
It comprises a battery 7 for supplying electric power to each of these parts, and a case 8 for accommodating them and being attachable to the handset 2. On the other hand, the hearing aid 9 includes a CdS element or a phototransistor 10 for receiving an optical signal from the light emitting diode 6 of the adapter 3 and converting it into an electric current, a microphone 11 which is a functional component inherent to the hearing aid, a phototransistor 10 and a microphone. Amplifier 12 for amplifying current from 11
The amplifier 12 also includes an earphone 13 for converting the output into voice, a battery 14 for supplying electric power to each of these parts, a changeover switch 15, and a case 16 for housing them. The case 16 is provided with an earhook 17 having a sound guiding tube that communicates with the voice output section of the earphone 13, and an earplug 18 is provided at the tip of the earhook 17.

The adapter 3 is fixed to the handset 1 by the belt 2 with the light emitting diode 6 facing outward, and the hearing aid 9
The earphone 17 is used by hanging the earhook 17 on the user's ear and inserting the earplug 18 into the ear hole. When a voice is output from the handset 1 of the telephone, the voice is converted into a voice current by vibrating the diaphragm of the microphone 4 of the adapter 3. This audio current is amplified by the amplifier 5, and then the light emitting diode 6
Is input to the hearing aid 9 and is converted into a strong and weak optical signal corresponding to the audio current and output to the hearing aid 9. When the phototransistor 10 of the hearing aid 9 receives this optical signal, it is converted into a current again by photoelectric conversion, amplified by the amplifier 12, and then input to the earphone 13 to vibrate the diaphragm and output a voice. When used as a normal hearing aid, the audio current output from the microphone 11 is similarly output by the amplifier 1
The sound is amplified by 2 and output from the earphone 13.
The change-over switch 15 is for switching between an operation mode for guiding the voice output from the handset 1 to the earphone 13 and an operation mode for guiding the output from the microphone 11 to the earphone 13. It goes without saying that the changeover switch 15 can also function as a power switch.

In the embodiment shown in FIG. 1, the hearing aid 9 is of the ear-hook type, but it is of course possible to use the hearing aid of ear-insertion type, box-type, or spectacles type. FIG. 2 shows an embodiment in which the hearing aid is of the in-ear type. The hearing aid 9A of FIG. 2 is similar to the hearing aid of FIG. 1 except that the hearing aid 9A is of the earplug type, and therefore the detailed description of the hearing aid of FIG. 2 is omitted. In addition, in FIG.
The same members as in 1 are indicated by the same reference numerals as those in FIG. Figure 2
, Only the hearing aid is shown, but this hearing aid 9A
It may be used in combination with the adapter 3 of FIG. In each of the above-mentioned embodiments, it is of course possible to attach a polarization filter to the light receiving portion of the phototransistor 10 as needed to satisfactorily avoid the influence of external light.

[0011]

As described above, according to the present invention, an adapter having a microphone, an amplifier and a light emitting element is attached to a handset of a telephone, and a voice signal of the handset is converted into an optical signal by the light emitting element and output. , The light receiving element provided in the hearing aid converts and amplifies it into an audio signal and outputs it from the earphone, so it is not affected by the leakage magnetic flux of the commercial power supply and various electric products, and the hearing aid can listen to the telephone satisfactorily. be able to.

[Brief description of drawings]

FIG. 1 (a) is a schematic view showing a usage mode of a hearing aid telephone listening device according to an embodiment of the present invention. (B) The schematic diagram which shows the schematic structure of the adapter in the same apparatus. (C) The schematic diagram which shows schematic structure of the hearing aid in the same apparatus.

FIG. 2 is a schematic diagram showing a schematic configuration of a hearing aid in a hearing aid telephone listening device according to another embodiment of the present invention.

FIG. 3A is a schematic view showing a handset of a telephone in a conventional hearing aid telephone listening device. (B) The schematic diagram which shows schematic structure of the hearing aid in the same apparatus.

FIG. 4 (a) is a schematic view showing a usage state of a hearing aid telephone listening device in a conventional example. (B) The schematic diagram which shows the schematic structure of the adapter in the same apparatus. (C) The schematic diagram which shows schematic structure of the hearing aid in the same apparatus.

[Explanation of symbols]

 1 Handset in handset of telephone 2 Belt 3 Adapter 4 Microphone 5 Amplifier 6 Light emitting diode 7 Battery 8 Case 9,9A Hearing aid 10 Phototransistor 11 Microphone 12 Amplifier 13 Earphone 14 Battery 15 Change switch 16 Case 17 Earhook 18 Earplug

Claims (3)

[Scope of utility model registration request] 1. A microphone for receiving a voice output from a handset of a telephone, an amplifier for amplifying an output of the microphone, a light emitting element for converting an output of the amplifier into an optical signal, and the microphone, the amplifier and the light emitting element. An earphone that amplifies the audio signal from the light receiving element, receives the optical signal from the light emitting element of the adapter, and converts the audio signal into an audio signal. A hearing aid telephone listening device comprising a hearing aid with an amplifier for transmitting to. 2. The hearing aid telephone listening device according to claim 1, wherein the hearing aid is an ear-hook type hearing aid. 3. The hearing aid telephone listening device according to claim 1, wherein the hearing aid is an in-ear hearing aid.