JPH08102780A - Hearing aid for telephone set - Google Patents

Abstract

PURPOSE: To easily perform attachment to the receiver of the handset of a telephone set and to make possible the communication of a person who is hard of hearing. CONSTITUTION: This hearing aid 100 is attached to the part of the handset receiver 21 of the handset 22 of the telephone set 200 by using a rubber band and an adjustment fitting 10, a concha pushing switch 7 is turned on when the concha 31 of a receiving person 300 is pressed to an earmuff 9 and an operating state is attained. Sound generated from the receiver 21 is detected in a microphone 2, amplified in an amplifier 3 and turned to output matched with the characteristics of the receiving person 300 by an equalizer 15 in the inside and the output is outputted from an air transmission type receiver 4 and transmitted from an external auditory meatus 32 to the receiving person 300.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hearing aid for a telephone, which is attached to a handset of a telephone to amplify the volume and enables an air-conducting or bone-conducting receiver to receive a hearing-impaired person.

[0002]

2. Description of the Related Art Conventionally, as a telephone for a hearing-impaired person, there is a telephone (a silver horn or the like) having an increased receiving volume as compared with an ordinary telephone and a telephone using a bone conduction type handset.

[0003]

However, the conventional countermeasures for telephones for the hearing impaired are to use a special telephone with an increase in the listening volume of its own, which makes it difficult for the hearing-impaired to get out of the public. There was a drawback that I could not use the telephone.

It is an object of the present invention to allow a hearing-impaired person to talk by attaching this device to a handset receiver for ordinary household, office and public telephones.

[0005]

DISCLOSURE OF THE INVENTION A hearing aid for a telephone according to the present invention is a microphone for detecting a voice or a signal sound of a voice generated from a handset of a telephone during a call, an amplifier for amplifying the output, and an amplifier for the amplifier. An air conduction type handset or a bone conduction type handset to which an output is applied, and an attachment means detachably attached to a handset handset of a telephone;
It is provided with a howling prevention switch that enables reception only when the auricle is pressed.

Further, an equalizer for correcting the output of the microphone according to the sensitivity frequency characteristic of the hearing impaired person is provided.

Further, it is provided with an electromagnetic type handset or coil for electromagnetically coupling with a normal hearing aid.

[0008]

In the present invention, when the hearing aid is attached to the handset receiver of the telephone by the attaching means and the auricle is pressed against the hearing aid in use, the howling prevention switch is turned on to enable reception. The received sound detected by the microphone is corrected by the equalizer according to the sensitivity frequency characteristic of the receiver, amplified by the amplifier, and transmitted to the receiver by the air conduction type receiver or the bone conduction type receiver.

Further, an electromagnetic type handset or a coil (in the case of a piezoelectric type handset) can be used to receive a voice by using an ordinary hearing aid.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an embodiment of the present invention, in which a part of a state showing a hearing aid for a telephone (hereinafter, simply referred to as a hearing aid) 100 using an air conduction type handset is attached to a telephone handset. 2 is a schematic side view shown in FIG.

2A to 2D are a front view, a side sectional view, a side view and a rear view of an air conduction type hearing aid 100. However, FIG. 2 (c) shows a case where a rubber band and an adjustment fitting are used as the attachment means. In FIG. 1, 100 is a hearing aid according to the present invention, 200 is a telephone, and 300 is a listener.

First, the structure of the hearing aid 100 will be described with reference to FIGS.

Reference numeral 1 is a housing of the hearing aid 100, and 2 is a small microphone for picking up a received sound from the telephone 200. This voice or signal sound is supplied to an amplifier 3 having a preamplifier, an equalizer and a main amplifier. Amplify. Reference numeral 4 is an air conduction type handset that allows the listener 300 including a hearing-impaired person to hear, 5 is a main switch, 6 is a pilot lamp, and 7 is an auricle pressing switch having a function of a howling prevention switch, which is turned on when the auricle is pressed. Become. Reference numeral 8 is a volume adjusting volume, 9 is an ear muff which is an ear covering, 10 is a rubber band and an adjusting metal fitting as an example of an attaching means, 11 is a combined air chamber formed when the telephone 200 is attached, and 12 is a contact rubber ring. , 13 is a battery,
Reference numeral 14 is a preamplifier, 15 is an equalizer, 16 is a main amplifier, 20 is a coil, which is a coil provided in the hearing aid 100 so that communication can be performed using a normal hearing aid, and when the air conduction type handset 4 is an electromagnetic type. Is not necessary, but is necessary for the piezoelectric type.

Next, the telephone 200 and the listener 300 will be described.

In FIG. 1, the handset 2 of the telephone 200 is shown.
2 and handset receiver 2 attached to the tip
1 is shown, and for the listener 300, the auricle 31
And the ear canal 32 is shown.

FIG. 7 shows a block diagram of the circuit configuration of this apparatus, and FIG. 8 shows the frequency characteristics of the desired output sound pressure.

Next, the operation will be described.

In use, when the main switch 5 is turned on (FIG. 7), the pilot 6 lights up. Hearing aid 100
As shown in FIG. 1, the rubber ring 12 for contact is attached to the handset receiver 21 at the tip of the handset 22 of the telephone 200.
Are attached and attached using the rubber band and the adjustment fitting 10. Then, when the listener 300 presses his / her auricle 31 against the hearing aid 100, the auricle pressing switch 7 is turned on to enter the operating state.

In FIG. 8, 0 dB is for a hearing-impaired person, and for sensorineural deafness, as shown by a curve A, 30 to 90.
Since the output sound pressure of dBSPL is required and the side sound attenuation of the telephone itself is about 20 dB, the hearing aid 10 of the present invention.
In order to prevent the received sound of 0 from howling through the transmitter, the ear muff 9 is used so that the received sound does not leak from the auricle 31 of the receiver 300, and the hearing aid 100 is used.
The auricle pressing switch 7 which is a howling prevention switch of the type which receives a sound in a state where the sound of the received sound is reduced by making contact with the earpiece is used. Also, the volume of the combined air chamber 11 between the handset receiver 21 and the microphone 2 is, for example, 6 cc.
The contact rubber ring 12 is used in order to prevent the received sound from the telephone 200 from leaking and prevent it from slipping.

3 (a) and 3 (b) show how to attach the hearing aid 100 to the handset 22 by using the rubber band and the adjusting metal fitting 10 and by using the holding leaf spring 17. As shown in FIG. .

The holding method of FIG. 3 (a) is the same as that of FIG. 1 described above, and FIG. 3 (a) corresponds to the top view of FIG.

In FIG. 3B, a pair of holding leaf springs 17 is fixed to the hearing aid 100, and the handset 22 of the telephone is set.
Then, the installation is completed as shown in the drawing.

The volume control volume 8 is a semi-fixed type with a variable range of + -20 dB as shown by curves B and C in FIG.

Next, FIG. 4 shows an embodiment in the case of using a bone conduction type handset used by a person with conductive hearing loss. Reference numeral 18 denotes a bone conduction type handset, and in order to use the bone conduction type handset 32 to apply mechanical vibration to the ear canal 32, it is necessary to press and hold the bone conduction type handset 18, and in order to adjust this pressing pressure, a spring type handset support The board 19 is used for listening. The other configuration is the same as that of FIG. The electric circuit diagram is almost the same as that in FIG.

The bone conduction type hearing aid 1 is shown in FIGS.
00 shows a front view, a cross-sectional view, a side view, and a rear view. In addition, FIGS. 6A and 6B show a method for attaching a hearing aid to a handset in the same manner as in FIGS. 3A and 3B, in the case of the rubber band and the adjustment metal fitting 10, and in the case of the holding leaf spring 17.
The method of holding the type is shown. In the case of this conductive hearing loss, the characteristic of the bone conduction level output D shown in FIG. 8 is required, and the characteristic of the bone conduction handset and the entire circuit may be flat within a band. Also, the volume control volume 8 is 30 dB +-in FIG.
It is a semi-fixed type with a variable range of 20 dB. In this case, howling of mechanical vibration is less likely to occur than the air conduction type,
It is not necessary to use the auricle pressing switch 7 shown in FIG.

In each of the above embodiments, the hearing aid 100 according to the present invention is used by directly applying it to the auricle 31. However, the hearing aid 100 according to the present invention can be used with the normal hearing aid still worn.
In order to be able to use the receiver, an electromagnetic type handset for electromagnetically coupling with a normal hearing aid is used, or a coil 20 is provided when the air conduction type handset 4 or the bone conduction type handset 18 is a piezoelectric type handset. To do.

[0027]

As described above, according to the present invention, the microphone for detecting the received sound of the voice or the signal sound generated from the handset of the telephone during the call, the amplifier for amplifying the output, and the air to which the output of the amplifier is applied. It is equipped with a conduction type handset or a bone conduction type handset, a mounting means that is detachably attached to the handset handset of the telephone, and a howling prevention switch that enables reception only when the auricle is pressed. It is installed and can be heard clearly by the hearing impaired.

Further, since the equalizer for correcting the output of the microphone according to the sensitivity frequency characteristic of the listener (deafness) is provided, the listener can adjust the frequency characteristic to his own characteristic by the equalizer and prevent howling. Since the switch works, it is possible to receive much clearer speech, unlike the one that simply amplifies.

Further, since an electromagnetic type receiver or coil for electromagnetically coupling with a normal hearing aid is provided, it is possible to receive a voice as a normal hearing aid.

Therefore, it can be used for ordinary home use, office use, public telephones, mobile telephones, etc., and enables telephone conversations by callers with hearing loss. In particular, since this hearing aid for telephones is attached to the earpiece, it has the advantage of being small and convenient to carry.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional side view showing a part of a usage state of a hearing aid for a telephone using an air conduction type receiver according to an embodiment of the present invention.

2 is a front view showing a detail of the hearing aid of FIG. 1, a side sectional view,
It is a side view and a rear view.

FIG. 3 is a top view for explaining attachment means of the hearing aid of the present invention to the handset receiver of the telephone of the embodiment of FIG.

FIG. 4 is a schematic cross-sectional side view showing a part of a hearing aid for a telephone using a bone conduction type receiver according to another embodiment of the present invention.

5 is a front view showing a detail of the hearing aid of FIG. 4, a side sectional view,
It is a side view and a rear view.

FIG. 6 is a top view for explaining the attachment means of the hearing aid of the present invention to the handset receiver of the telephone of the embodiment of FIG.

FIG. 7 is a block diagram showing a configuration of an electric circuit of the air conduction type hearing aid.

FIG. 8 is a diagram showing frequency characteristics of output sound pressure of a hearing aid.

[Explanation of symbols]

 1 Hearing aid body 2 Microphone 3 Amplifier 4 Air conduction type handset 5 Main switch 6 Pilot lamp 7 Auricle pressing switch 8 Volume control volume 9 Iamafu 10 Rubber band and adjustment metal fitting 11 Coupled air chamber 12 Contact rubber ring 13 Battery 14 front On-amplifier 15 Equalizer 16 Main amplifier 17 Holding leaf spring 18 Bone conduction type handset 19 Handset support plate 21 Handset handset 22 Handset 31 Ear pin 32 Ear canal 100 Hearing aid 200 Telephone 300 Listener

Claims (3)

[Claims] 1. A microphone for detecting a received sound of a voice or a signal sound generated from a receiver of a telephone during a call, an amplifier for amplifying an output of the microphone, and an air conduction type receiver or a bone conduction type to which an output of the amplifier is applied. A hearing aid for a telephone, comprising: a handset, a mounting means for detachably attaching to a handset handset of a telephone, and a howling prevention switch that enables reception only when the auricle is pressed. 2. A microphone for detecting a received sound of a voice or a signal sound generated from a handset of a telephone during a call, an equalizer for correcting an output of the microphone according to a sensitivity frequency characteristic of a listener, and an output of the equalizer. An amplifier to be amplified, an air-conducting or bone-conducting receiver to which the output of the amplifier is applied, a mounting means that is detachably attached to a handset receiver of a telephone, and howling that enables reception only when the auricle is pressed. A hearing aid for a telephone, which is equipped with a prevention switch. 3. A microphone for detecting a received sound of a voice or a signal sound generated from a handset of a telephone during a call, an equalizer for correcting an output of the microphone according to a sensitivity frequency characteristic of a listener, and an output of the equalizer. An amplifier to be amplified, an air-conducting or bone-conducting receiver to which the output of the amplifier is applied, a mounting means that is detachably attached to a handset receiver of a telephone, and howling that enables reception only when the auricle is pressed. A hearing aid for a telephone, comprising a protection switch and an electromagnetic receiver or coil for electromagnetically coupling with a normal hearing aid.