JPH0832113B2 - Hearing aid - Google Patents

Description

The present invention relates to a hearing aid device, and more particularly to a hearing aid device of a type that does not use earphones.

[Conventional technology]

A hearing aid is generally equipped with an earphone and is configured to listen to the expanded sound by inserting the earphone into the ear canal.

[Problems to be Solved by the Invention]

Such hearing aids do not use hearing aids due to the discomfort of earphones inserted into the ear canal, feel inconvenient, mild,
The problem is that there are many people with moderate hearing loss.

Further, since the conventional hearing aid only expands the sound, the surrounding noise also expands, so that there is a problem that only the desired sound cannot be expanded and heard.

The present invention has been made in view of the above problems of the prior art, and its purpose is not to use earphones and not to be worn on the body, and to expand the sound within a specific range. The present invention is intended to provide a hearing aid device that can be listened to by the user, does not require a very large space, and does not cause discomfort.

[Means for Solving the Problems] According to the present invention, the above object is provided with a reflector formed of a part of a spheroid having two focal points, and a sound source arranged at one focal point, The body is supported by a rear wall or a member continuous with the wall, the one focal point is located at the same position as or behind the other focal point in the horizontal direction with respect to the wall, and the reflector has two focal points. This is achieved by the fact that the lower part is opened more than the horizontal line passing through the midpoint of the line connecting and the front part is opened wider than the rear part with respect to the vertical line passing through the other focal point.

[Operation] Under the device of the present invention having the above-described structure, since the spheroid has two focal points, the sound from the sound generating means arranged at one focal point located above is positioned at the other focal point. The sound of the sound source can be surely and enlarged and heard while being converged and delivered to the user's head. The sound pressure rapidly decreases at a position away from the other focus, and the sound is magnified and heard only by the person on the other focus.

Further, the noise inside and outside the reflector at the position away from the one focus is not converged to the other focus, so only the sound of the sound source is expanded.

Furthermore, one focus where the sound source is located is on the wall,
The user's head is located at the same position or at the rear in the horizontal direction as the other focal point, and the reflector is wider than the other focal point toward the front. No discomfort like being blocked.

〔Example〕

Hereinafter, details of the present invention will be described based on embodiments shown in the drawings.

FIG. 3 illustrates the principle of the present invention. The hollow spheroid 1 has an inner surface of a shape obtained by rotating about an axis X passing through the two focal points 2 and 3.

The sound waves emitted from the sound source placed at one focus 2 are
The light is reflected by the inner surface of the spheroid 1 and converges on the other focus 3. The same applies when the sound source is placed on the side of the other focal point 3, and the light source is converged on the other focal point 2.

The present invention applies such a principle, and specific embodiments will be described in detail below.

<First Embodiment> FIG. 1 shows a first embodiment of the present invention. In the drawing, reference numeral 10 is a spheroidal surface obtained by rotating around an axis X inclined through two focal points, and reference numeral 11 Is this spheroid
This is a reflector in which a part of 10 has an inner surface shape.

The reflector 11 is supported by the wall surface 12 at its rear end. The reflector 11 may be suspended and supported not by the wall surface 12 but by a member continuous with the wall surface 12, for example, a ceiling.

Of the two focal points A and B of the reflector 11, a sound source 13 such as a speaker is arranged at the rearward focal point A, that is, near the wall surface 12 so as to emit a sound toward the surface of the reflector 11. In the illustrated example, when a sound source such as a speaker is attached to the wall surface 12, the sound source 13 is positioned at the focus A.

As is clear from FIG. 1, the reflector 11 is open below the center, that is, below the horizontal line passing through the midpoint of A and B on the axis X connecting the two focal points A and B. , The other part of the focus B, that is, the front part is wider than the rear part with respect to the vertical line Y passing through the position of the user's head, thereby eliminating the discomfort of the user blocking the front part. .

A chair 14 is arranged below the other focal point B of the spheroidal surface 10, and when the user 15 sits on the chair 14, it is considered that the head of the chair 15 is almost at the focal point B. There is.

In the apparatus of this embodiment having the above-mentioned configuration, the user 15
In the state of sitting on 14, the sound and the like emitted from the sound source 13 are reflected by the reflector 11 and converged around the head of the user 15 located at the focal point B.

This phenomenon occurs regardless of the distance between the two focal points A and B, but it goes without saying that the larger the reflection area of the reflector 11, the greater the sound collection effect.

Thus, the sound or the like from the sound source 13 reaches only a specific user 15, and can be heard by being expanded only to this user 15. Further, since the noise inside and outside the reflector 11 at the position away from the one focus A is not converged toward the other focus B,
Only the sound from the sound source 13 is expanded and reaches the user.

Of course, the user 15 can be applied not only to a hearing-impaired person but also to a healthy person. In this case, for example, only the user 15 such as music, or only those in the vicinity can hear the surrounding noise. You can listen to music, etc. without being bothered by.

Further, if the above-mentioned device is applied to, for example, the wall surface of a structure such as a restaurant and the position of the reflector 11 can be moved together with the sound generating means 13, the position of the focus B in the room. Can be changed.

In the present embodiment, if the sound source 13 is a point sound source, the sound is converged at the focal point B extremely densely, but if the sound source has a certain width, it is correspondingly located in a region near the focal point B. It is also possible to converge in the range expanded to.

<Second Embodiment> FIG. 2 illustrates a second embodiment of the present invention. In the figure, the same parts as those of the first embodiment shown in FIG. The description is omitted.

In the first embodiment, the axes passing through the two focal points are inclined, but this embodiment is characterized in that the axes are in the vertical direction and the sound source is located at the upper focal point.

In FIG. 2, an axis line X passing through the two focal points A and B is a vertical line, and a speaker or the like as a sound source is arranged at the upper focal point A. The reflector 11 is attached to the wall surface 12 at the rear end and extends to a position forward of the axis X.
However, with respect to the axis X, the reflector 11 is largely open from the rear to the front. Therefore, the user 15 sitting on the chair 14 provided below the other focal point B located below
As in the case of the first embodiment, the front side of the vehicle is wide open and no discomfort is caused by the reflector 11.

Thus, the user can magnify and listen only to the sound from the sound source 13 in the same manner as the principle of the first embodiment.

〔The invention's effect〕

As described above, according to the present invention, the sound source is arranged at one focus of the reflector forming a part of the spheroid, and the user's head is located at the other focus. , It can converge only the sound of the sound source to a specific range, it functions as a hearing aid device that does not need earphones for the user,
The effect that a healthy person can be made to function as an audio device is obtained. Since the reflector is largely open in front of the user, there is no discomfort that the reflector is blocked.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a first embodiment device of the present invention, FIG. 2 is a schematic configuration diagram of a second embodiment device, and FIG. 3 is an explanatory diagram for explaining the principle of the present invention. 10 …… Spheroid 11 …… Reflector 12 …… Wall 13 …… Sound source A, B …… Focus X …… Axis Y …… Vertical line

Claims (3)

[Claims] 1. A reflector comprising a part of a spheroid having two focal points, and a sound source arranged at one focal point,
The reflector is supported by a wall located at the rear or a member continuous with the wall, and the one focal point is located at the same position or at the rear of the other focal point in the horizontal direction with respect to the wall,
The reflector should be open below the horizontal line passing through the midpoint of the line that connects the two focal points, and at the front side should be wider than the rear side with respect to the vertical line passing through the other focal point. And hearing aids. 2. The hearing aid device according to claim 1, wherein the sound source has a point sound source structure. 3. The hearing aid according to claim 2, wherein the light source is arranged close to the sound source on one focal side where the sound source is arranged, and the spheroid is a mirror surface.