JPH02104200A - Hearing aid device - Google Patents

Abstract

PURPOSE:To use the title device as a hearing aid omitting an earphone by providing the device with a reflector having a paraboloid of revolution and a voice generator arranged on the focus of the reflector. CONSTITUTION:The voice generator (speaker) 2 is arranged on the focus of a 1st disk-like reflector 1 having a paraboloid of revolution. On the other hand, a 2nd reflector 3 has a similar paraboloid of revolution with different radius of curvature and its peripheral edge is brought into contact and fixed with the peripheral edge of the 1st reflector. The focus of the 2nd reflector 2 is arranged on the position of the voice generator 2 and an aperture part 4 with a prescribed diameter is formed on the center part of the 2nd reflector 3. Thereby, voice generated from the voice generator 2 is reflected by the 1st reflector 1 and discharged from the aperture part 4 of the 2nd reflector 3 to the outside as parallel sound waves and locally reached to a user positioned on the position opposed to the aperture part 4 to supply expanded sound to the periphery. Thus, a hearing aid omitting an earphone can be obtained.

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 that does not use earphones.

[Prior Art] Conventional hearing aids come with earphones and are used by inserting the earphones into the ear canal.

[Problem that the invention aims to solve] Even though it is known that such hearing aids are useful, there are mild to moderate cases where people do not wear hearing aids due to the discomfort of pushing the earphones into the ear canal and are inconvenienced. The problem was that there were a large number of people with hearing loss.

[Means for solving the problems] In the present invention, in order to solve the above problems,
a first reflector having a parabolic surface of revolution, a sound generating device disposed at the focal point of the first reflector, and opposed to each other with the terminal edge touching the terminal edge of the first reflector; In addition, a structure including a second reflector having an opening in the center was adopted.

[Function] When the above-described structure is adopted, the sound generated from the sound generator becomes a parallel sound wave by the first reflector and becomes a second sound wave.
reflected in the direction of the reflector. Most of this sound wave is radiated from the opening of the second reflector toward the user.

On the other hand, the sound waves from the first reflector that are reflected toward the part other than the opening of the second reflector are reflected from the part other than the opening of the second reflector, and are reflected back toward the part of the second reflector other than the opening. Head in the direction.

After that, the same operation is repeated, and the sound from the sound generator is focused and radiated toward the user facing the opening of the second reflector, and the sound is emitted into the limited space around the user. can be used to amplify and convey the sound.

[Embodiments] Hereinafter, the present invention will be described in detail with reference to some embodiments shown in the drawings.

In the following embodiments, the same or corresponding parts are denoted by the same reference numerals, and the explanation thereof will be omitted.

[First Embodiment] Fig. 1 explains the first embodiment of the present invention. In Fig. 1, the reference numeral 1 is a first reflector, which is formed into a dish shape having a parabolic surface of revolution. There is.

A sound generating device (speaker) 2 is placed at the focal point of the first reflector 1 . This sound generating device 2 is fixedly arranged by a support member such as a column (not shown).

On the other hand, what is indicated by the reference numeral 3 is a second reflector, which has a rotating parabolic surface similar to the first reflector 1, although the curvature is different, and its peripheral edge is fixed in contact with the peripheral edge of the first reflector. has been done.

The focus of this second reflector 3 is at the position of the sound generating device 2. An opening 4 having a predetermined diameter is formed in the center of the second reflector 3.

Since this embodiment is configured as described above, the sound generated from the sound generating device 2 is reflected by the first reflector 1, becomes a parallel sound wave, and is transmitted from the opening 4 of the second reflector 3 to the outside. is released. Since this sound wave is condensed into a sound bundle, it locally reaches the user located opposite the opening 11FI+4, supplies expanded sound to the surrounding area, and functions as a hearing aid.

Further, the sound waves that do not pass through the opening 4 and reach the second reflector 3 are reflected again, sent back to the first reflector, and further reflected and sent out from the opening 4 to the outside.

Thereafter, the same operation is repeated, and the sound from the sound generating device 2 is radiated toward the user from the opening 4, and the amplified sound is delivered only to the surroundings of the user. therefore,
For people with hearing loss, this is a hearing aid that does not require earphones.

In addition, if you are in a noisy place such as a coffee shop, restaurant, or bar, you can selectively adjust the sound volume by increasing the volume only in a specific area where this device is placed and decreasing the volume in other areas. You can also avoid disturbing other customers.

[Second Embodiment] FIG. 2 explains a second embodiment of the present invention. In this embodiment, a third reflector 5 is provided below the sound generating device 2.
is provided. Although the third reflector 5 also has a small diameter, it is formed into a parabolic surface of revolution, and its center coincides with the center of the opening 4. Further, its diameter is approximately the same as the diameter of the opening 4.

When such a structure is adopted, the sound waves reflected from the second reflector 3 or a part of the sound waves reflected from other parts enter the third reflector 5, where they are reflected and become parallel sound waves. , are emitted from the opening 4 toward the user.

If the structure of this embodiment is adopted, a sound bundle can be formed more efficiently.

[Third Embodiment] FIG. 3 explains a third embodiment of the present invention. In this embodiment, a short cylindrical sound absorbing material 6 is provided downwardly around the periphery of the opening 4. ing.

When such a sound absorbing material 6 is provided, among the sound waves emitted from the opening 4, the scattered sound waves that do not go in the straight direction are absorbed, and only the sound waves that go in the straight direction are emitted from the opening 4. It is possible to focus the expanded sound waves only in a specific range.

[Fourth Embodiment] FIG. 4 illustrates a fourth embodiment of the present invention, in which a light source 7 is provided on the inner surface of the second reflector 3.

The light beam emitted from the light source 7 is made into parallel light beams by the first reflector 1, and is emitted to the outside from the opening 4 together with sound waves while being repeatedly reflected between the first and second reflectors.

When such a structure is adopted, the direction of the sound wave and the direction of the light beam match, so the direction of the sound wave can be determined by looking at the direction of the light beam, and the direction in which the sound is expanding can be seen at a glance.

[Fifth Embodiment] FIG. 5 illustrates a fifth embodiment of the present invention, which employs the most simplified form.

That is, in FIG. 5, what is indicated by reference numeral 8 is a reflector having a parabolic surface of revolution, and the sound generating device 2 is placed at the focal point of the reflector.

Even if such a simple configuration is adopted, the sound waves can be focused and emitted.

According to the inventor's measurements, at a position 1 m in the axial direction from the sound generating device 2 and 80a++1 in the direction perpendicular to the axis.
! At the first position, the volume reduction was 30 decibels.

In this way, even in the simplest form, it is possible to narrow down and emit sound waves only to a certain limited location.

[Effects] As is clear from the above explanation, the present invention applies the principle of an acoustic lens using a parabola of revolution and employs a structure that radiates sound waves in a specific direction.
If the user is located in the direction in which the sound waves are radiated, the sound can be expanded to the specified sky around the user and can be used as a hearing aid without the need for earphones.

[Brief explanation of the drawing]

1 to 5 are side views of emblems explaining eleventh to fifth embodiments of the present invention. DESCRIPTION OF SYMBOLS 1... First reflector, 2... Sound generator, 3...
- Second reflector, 4... Opening, 5... Third reflector, 6... Sound absorbing material, 7... Light emitter, 8... Reflector.

Claims (5)

[Claims] (1) A hearing aid device comprising a reflector having a parabola of rotation and a sound generator placed at the focal point of the reflector. (2) a first reflector having a rotating parabolic surface; a sound generating device disposed at the focal point of the reflector; disposed facing the first reflector with their peripheral edges in contact; A second plate having a parabolic surface and an opening in the center.
A hearing aid device comprising: a reflector. (3) A third reflector is provided below the sound generating device, the third reflector having a parabola of revolution having a small diameter and concave toward the center of the opening of the second reflector. The hearing aid device according to 2. (4) The hearing aid device according to claim 2 or 3, wherein a short cylindrical sound absorbing material is provided downwardly around the opening of the second reflector. (5) The hearing aid device according to any one of claims 2 to 4, wherein a light emitter is arranged on the inner surface of the second reflector.