JPH03128599A - Hearing aid - Google Patents

Abstract

PURPOSE:To converge sounds only in a specific range by providing a reflection plate consisting of a part of an elliptic body of revolution having two focuses and a sound source arranged in one focus and constituting them so that a user hears sounds converged at the other focus. CONSTITUTION:A reflection plate 11 has one end fixed to a wall surface 12. Its area is set in accordance with the scale. A sound producing means 13 is arranged at one focus A of an elliptic body 10 of revolution on the side face of a wall surface 12. A chair 14 is arranged in the vicinity of the other focus B of the elliptic body 10 of revolution, and a user 15 has his head placed in the focus B when sitting down in the chair 14. When the user 15 sits down in the chair 14 and sounds are produced from the sound producing means 13, sounds are reflected by the reflection plate 11 and are converged in the vicinity of the head part of the user 15 in the focus B.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a hearing aid device, and more particularly to a hearing aid device that does not use earphones.

[Prior Art] Hearing aids generally include earphones and are configured to allow the user to hear amplified sounds by inserting the earphones into the ear canal.

[The problem that the invention attempts to solve! ] Such hearing aids are inconvenient because the earphones inserted into the ear canal are uncomfortable and people do not use them. The problem was that there were an extremely large number of people with mild to moderate hearing loss.

Furthermore, because conventional hearing aids simply amplify sounds, they also amplify noise, making it impossible to magnify and listen to just the sounds you want to hear.

The present invention was made in view of these problems with the conventional technology, and its purpose is to amplify the sound within a specific range without using earphones or wearing them on the body. The purpose of the present invention is to provide a hearing aid device that allows the user to listen to music.

[Means for Solving the Problems] In order to achieve the above-mentioned object distantly, in the present invention, a part of an ellipsoid of revolution having two focal points is used as a reflector, and an audio signal is transmitted to one focus of the ellipsoid of revolution. The means of generation is Iaat,
, am was adopted in which the user was positioned at the other focal point.

[Operation] Under the above structure, since the spheroidal surface has two focal points, the sound from the sound generating means located at one focal point is converged and reaches the user located at the other focal point. , the sound source can be reliably and magnified to be heard, but the sound pressure decreases rapidly as the sound source moves away from the focal point, and the sound is magnified and loud only to the person at the focal point.

[Example] Hereinafter, the present invention will be described in detail based on the example shown in the drawings.

FIG. 3 shows a detailed explanation of the invention, in which a hollow spheroid 1 has two focal points 2.3.

Then, when light or sound waves are emitted from one focal point 2,
It is reflected on the inner surface of the spheroid 1 and reaches the other focal point 3. The same thing can be done even if the source of the sound or the like is placed on the other focal point 3 side.

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

[First Embodiment] Figure 1 explains the first embodiment of the present invention. In the figure, the symbol 0 is a spheroid, and the symbol 11 is a part of this spheroid. This is a reflective plate constructed using parts.

The reflecting plate 11 has one end fixed to a wall surface 12. The area is set according to the scale.

On the side of the wall surface 12 and at one focal point A of the spheroid 10, a sound generating means 13 is installed with 2ic! i have been

In addition, a chair 14 is arranged near the other focal point B of the one-rotation tank circular body 10, and care is taken so that when a user 15 sits on this chair 14, the head of the user 15 is located almost at the focal point B. has been done.

Based on the above-described structure, when the user e15 sits on the chair 14 and generates sound from the sound generating means 3, the reflector 1
The sound is reflected by user 1 located at focal point B.
It is converged around the head of No. 5.

This phenomenon occurs regardless of the distance between the focal points A2B, but the larger the direct product of one reflecting plate 11, the greater the sound collection effect.

As described above, the sound from the sound generating means 13 is distant only to the specific user 15 or only to the vicinity thereof, and if this sound is magnified, it will be amplified and loud only to the user 15.

Of course, the application can be applied not only to the user 15 who is hard of hearing but also to the case where the user 15 is a healthy person. You can listen.

Furthermore, if the above-mentioned device is applied to a structure such as a restaurant, for example, and the position of the reflector 11 is moved together with the sound generating means 13, the position of the focal point B in the room can be changed. It is possible to magnify the sound of karaoke etc. for each specific group to make it louder.

[Second Embodiment] Fig. 12 explains the second embodiment of the present invention. In the figure, the same parts as those in Fig.

In this embodiment, a desk top method is used instead of a wall hanging method as shown in the first construction drawing.

In this example, the reflector 11 is installed on the desk 16, and the sound generating means 13 is housed within the desk 16.

Even if such a structure is adopted, the sound from the sound generating means 13 located at the focal point A can be converged only on the user 15 located at the focal point B, as in the embodiment described above.

[Effect] As is clear from the above description, according to the present invention, [ii
] *A part of the ellipsoid is used as a reflector, and a structure is adopted in which the sound source is placed at one focus of the #1 circle and the user is placed at the other focus, so that the sound is converged at a specific [1] It can function as a hearing aid device that does not require earphones for people who are naive, and can function as a hearing aid device and a sound device for healthy people.

[Brief explanation of the drawing]

FIG. 3 is a schematic configuration diagram explaining an embodiment of the present invention; FIG. 3 is an explanatory diagram explaining details of the present invention; 10... times @ ellipsoid, work 1... reflector, 13...
Audio source, 15...user. 5' + Ura A

Claims (3)

[Claims] (1) It is characterized by comprising a reflector made of a part of an ellipsoid of revolution having two focal points, and a sound source placed at one focal point, so that the sound converged at the other focal point can be heard. Hearing aid device. (2) The hearing aid device according to claim 1, wherein the sound source has a point sound source structure. (3) The hearing aid device according to claim 2, wherein a light source is arranged together with the sound source on one focal point side where the sound source is arranged, and the ellipsoid of revolution has a mirror structure.