JP2837638B2 - Ear-hearing hearing aid - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an ear-hearing hearing aid.
In particular, the present invention relates to an ear-hearing hearing aid provided with a wind cover.

[0002]

2. Description of the Related Art As an ear-hearing hearing aid provided with a window cover, Japanese Patent Publication No. 62-44637 or Japanese Utility Model Publication No.
The one disclosed in -6077 is known. FIG. 8 schematically shows the structure of an ear-hook hearing aid disclosed in these prior arts. That is, the conventional ear-hearing hearing aid has a microphone 101 and an earphone 10
2 on the front wall of the case body 100.
A hook 105 forming a sound path 104 is screwed into the sound guide tube 103 so that a sound from the earphone 102 is guided to the sound path 104 via the sound guide tube 103. A wind cover 106 is provided on the wall, and a sound intake 107 is provided at a portion of the wind cover 106 facing the sound guide tube 103.
From the microphone 101 via the sound hole 108.

[0003]

As described above, the front of the sound hole 108 of the microphone 101 is covered with the wind cover 1.
It is effective to reduce the wind noise by covering with 06. On the other hand, recently, high-output hearing aids have been developed.
The sound in the sound guide tube 103 is picked up at the sound inlet 107, and howling tends to occur.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to an ear-hearing hearing aid provided with a wind cover for preventing wind noise from entering a microphone, comprising a sound guide tube extending from an earphone of the wind cover. A sound-insulating wall was provided on the opposite part, and a sound intake opening to the sound hole of the microphone was formed on the side of the wind cover.

In order to reduce the influence of wind, a sponge, a metal sintered material, an inorganic sintered material,
It is preferable to provide a filler such as a mesh screen,
Further, it is preferable to perform a water-repellent treatment on the filler in order to prevent sweat or rainwater from entering through a sound intake.

[0006]

The sound inside the sound guide tube enters the microphone again through the sound inlet of the wind cover because the sound intake of the wind cover is open to the side without facing the sound guide tube. Nothing.

[0007]

Embodiments of the present invention will be described below with reference to the accompanying drawings. Here, FIG. 1 is a view showing a wearing state of the ear-hearing hearing aid according to the present invention, FIG. 2 is a sectional view of the ear-hearing hearing aid, FIG. 3 is an exploded view of a main part of the ear-hearing hearing aid, FIG. FIG. 2 is an enlarged view showing a main part of the cochlear hearing aid.

In the ear-hearing hearing aid, the inside of the case 1 is divided into a plurality of spaces by a partition wall 2, and a microphone 3, an earphone 4, a printed circuit board and the like are housed in each of these spaces. A switch 6 is provided, and a housing 8 for a battery 7 is attached to the rear of the case 1 so as to be freely opened and closed.

A sound guide tube 10 protrudes from the front wall of the case 1. This sound guide tube 10 is connected to the earphone 4,
A thread portion is engraved on the outer peripheral surface, and a hook 12 having a sound path 11 formed therein is screwed into the thread portion.

A sound hole 13 is formed in the front wall of the case 1 to connect to the microphone 3, and a window cover 14 is attached to the case 1 so as to cover the sound hole 13. The wind cover 14 has a streamlined upper surface to suppress the generation of wind noise. Wind cover 14
A sound insulation wall 15 is provided in a portion facing the sound guide tube 10 of the microphone 3.
The sound intake 16 connected to the sound hole 13 is formed.

The sound intake 16 is preferably filled with an open-celled polymeric material 17 such as urethane foam. That is, when a wearer with short hair wears, the sound intake 16 is exposed to the outside, and the suppression of wind noise is insufficient. Therefore, the generation of wind noise can be suppressed by inserting urethane foam or the like.

The filler to be inserted into the sound intake 16 is not limited to urethane foam, but may be a punched metal 18 as shown in FIG. 5, a mesh screen 19 as shown in FIG. An inorganic sintered material may be used.

In order to prevent sweat and rainwater from entering,
The filler inserted into the sound intake 16 may be subjected to a water-repellent treatment.

FIG. 7 is a graph comparing the performance of an ear-hearing hearing aid in which urethane foam is inserted into a sound intake as a filler and a conventional ear-hearing hearing aid. The angle is set to zero, and the state of facing the wind is indicated as 0 °. In each case, an experiment was conducted with a hearing aid attached to the right ear.

As shown in FIGS. 7 (a) and 7 (d), there is no significant difference between the hearing aid according to the present invention and the conventional hearing aid with respect to the wind from the front or the wind from substantially behind. As shown in FIGS. (B) and (c), in the case of a diagonal wind or a side wind, a remarkable difference is recognized, and it can be seen that the hearing aid according to the present invention is significantly improved. .

[0016]

As is apparent from the above description and the experimental results, according to the present invention, the sound intake of the wind cover provided in the ear-hearing hearing aid is not opposed to the sound guide tube. Since the opening is made to the side, the sound in the sound guide tube does not enter the microphone again through the sound inlet of the window cover and howling does not occur even in a high-output hearing aid.

In addition, open-celled sound intakes are provided with open-celled polymer material (sponge), metal sintered material,
By inserting a filler such as an inorganic sintered material or a mesh screen, even when a wearer with short hair wears the sound intake opening, the sound intake opening is not exposed, so that effective wind noise can be prevented.

Further, by applying a water-repellent treatment to the above-mentioned filling material, it is possible to prevent sweat and rainwater from entering through the sound intake.

[Brief description of the drawings]

FIG. 1 is a view showing a wearing state of an ear-hearing hearing aid according to the present invention.

FIG. 2 is a cross-sectional view of a cochlear hearing aid.

FIG. 3 is an exploded view of a main part of the earphone type hearing aid.

FIG. 4 is an enlarged view showing a main part of the earphone type hearing aid;

FIG. 5 is a diagram showing another embodiment.

FIG. 6 is a diagram showing another embodiment.

FIGS. 7A to 7D are graphs comparing the performance of an ear-hearing hearing aid in which urethane foam is inserted into a sound intake as a filler and a conventional ear-hearing hearing aid.

FIG. 8 is a diagram showing a schematic structure of a conventional ear-hearing hearing aid.

[Explanation of symbols]

1 ... case, 3 ... microphone, 4 ... earphone, 10 ...
Sound guide tube, 11: sound path, 12: hook, 13: sound hole, 14
... wind cover, 15 ... sound insulation wall, 16 ... sound intake, 17, 18, 19 ... filler.

Claims (3)

(57) [Claims] A microphone and an earphone are housed in a case body, a sound guide tube communicating with the earphone is provided on a front wall of the case body, and a wind cover for preventing wind noise from entering the microphone is provided. In the ear-hearing hearing aid provided in the vicinity of the above, a sound insulating wall is provided in a portion of the wind cover facing the sound guide tube, and a sound intake opening to a sound hole of the microphone is formed on a side surface of the wind cover. An ear-hearing hearing aid characterized by the following. 2. An ear-hearing hearing aid according to claim 1, wherein the sound intake is provided with a filler for reducing the influence of wind. 3. The ear-hearing hearing aid according to claim 2, wherein a water-repellent treatment is applied to a filler provided in the sound intake.