JPH05333869A - Soundproofing device - Google Patents

Abstract

PURPOSE:To provide the soundproofing device which constitutes a sound-proofed area without partitioning a space with a soundproof wall and does not impede an entry into and an exit from the soundproofed area and accessibility to the soundproofed area by forming a hollow conic elastic wave curtain of an ultrasonic wave radiated by an ultrasonic wave generation source. CONSTITUTION:The ultrasonic wave generating device 9 is suspended from a ceiling surface 3 and arranged. A hollow conic ultrasonic wave deflector 11 is arranged below the ultrasonic wave generating device 9 and deflects and guides the ultrasonic wave radiated by the ultrasonic wave generating device 9 by its internal surface so that the ultrasonic wave is propagated in a hollow conic shape surrounding the installation positions of a table 5, chairs 7, etc. Once the ultrasonic wave is radiated to the floor surface 1, the ultrasonic wave is propagated toward the floor surface 1 while deflected and guided by the ultrasonic wave deflector 11 or/and an inside deflector 13. Consequently, the hollow conic elastic wave curtain is formed surrounding the installation positions of the table 5 and chairs 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soundproof device, and more particularly to a soundproof device for insulating a specific area from the outside.

[0002]

2. Description of the Related Art A soundproof box made of soundproof material is well known as a soundproof device for insulating a specific area from the outside. There are various sizes depending on the purpose, even small ones that can only accommodate small noise-generating devices.

[0003]

The soundproof box achieves the purpose for the time being, but since the soundproof box is a soundproof material that shields the inside of the box from the outside of the box, the soundproofing inside the box is performed. There is a soundproof wall made of soundproof material at the boundary between the area and the outside of the soundproof area, which is the outside of the box, and it is inevitable that the soundproof wall divides the space due to the construction of the soundproof area. This greatly impedes the access to the sound insulation area and the accessibility to the sound insulation area.

The present invention has been made by paying attention to the above-mentioned problems in the conventional soundproof device, and the soundproof area is constituted without dividing the space by the soundproof wall, and the entrance / exit to / from the soundproof area is performed. It is an object of the present invention to provide a soundproofing device that does not impede accessibility to the.

[0005]

According to the present invention, the ultrasonic source is arranged above the floor,
The present invention is achieved by a soundproof device, characterized in that a hollow cone-shaped elastic wave curtain is formed by ultrasonic waves emitted from the ultrasonic wave generation source.

[0006]

According to the above-mentioned structure, the elastic wave curtain by ultrasonic waves is formed in a hollow conical shape, and the elastic wave curtain performs sound absorbing and sound insulating functions by sound wave attenuation, and the conical space inside the elastic wave curtain is formed. It becomes a sound insulation area outside the elastic wave curtain.

[0007]

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows an embodiment of a soundproof device according to the present invention. In FIG. 1, reference numeral 1 indicates a floor surface inside a room such as an office or a store, and reference numeral 3 indicates a ceiling surface inside the room. A table 5 and a chair 7 are installed on the floor surface 1. ..

An ultrasonic wave generator 9 is suspended from the ceiling surface 3 above the installation positions of the table 5 and the chair 7. The ultrasonic generator 9 generates ultrasonic waves having a frequency of about 19 kHz or more, preferably about 20 kHz or more, and radiates the ultrasonic waves toward the floor surface 1.
In the broadest sense, the term "ultrasonic wave" as used herein includes audible sound in a high frequency range that does not interfere with noise.

Below the ultrasonic generator 9, a hollow conical ultrasonic deflector 11 is arranged. The ultrasonic deflector 11 is configured to deflect and guide ultrasonic waves emitted from the ultrasonic generator 9 on its inner surface so as to propagate in a hollow conical shape surrounding the installation positions of the table 5 and the chair 7.

Further, as shown by phantom lines in the figure, the inner deflector 13 may be arranged inside the ultrasonic deflector 11. In this case, the ultrasonic wave is the inner surface of the ultrasonic deflector 11 and the inner deflector. It is further ensured that the ultrasonic wave is guided and propagated to the outer surface of 13 and the ultrasonic wave propagates in a hollow conical shape surrounding the installation positions of the table 5 and the chair 7.

According to the above configuration, when the ultrasonic wave is radiated from the ultrasonic wave generator 9 to the floor surface 1, the ultrasonic wave is
The ultrasonic deflector 11 propagates toward the floor surface 1 while being guided by the ultrasonic deflector 11 or the ultrasonic deflector 11 and the inner deflector 13 while being deflected.

As a result, as shown by the symbol C in the figure, a hollow conical elastic wave curtain formed by ultrasonic waves is formed so as to surround the installation positions of the table 5 and the chair 7.

Since the elastic wave curtain C by ultrasonic waves attenuates sound waves and produces a sound insulation effect, the elastic wave curtain C
The inner area A is a sound insulating area that is sound insulated from the outer area B thereof.

As a result, the degree to which the conversational voice in the inner area A, the sound from the speaker 15 and other sounds propagate to the outer area B is reduced, and the sound in the outer area B becomes difficult to propagate to the inner area A. , The inner area A becomes an acoustically separated independent space.

Therefore, the soundproofing device having the above-mentioned structure acoustically divides the inside of the coffee shop into tables, arranges the conference set in the office, the working area of the workers in the factory, the monitoring area, the waiting area, etc. Is effectively used for sound isolation and transparency.

2 and 3 show another embodiment of the ultrasonic wave generator used in the soundproof device according to the present invention. In this embodiment, a plurality of ultrasonic oscillators 19 are inclinedly arranged on the conical slope portion of the truncated conical base member 17. The ultrasonic oscillators 19 are adapted to oscillate ultrasonic waves with linear directivity. In this case, the ultrasonic waves oscillated by each of the plurality of ultrasonic oscillators 19 cause the elastic wave curtain C having a hollow conical shape to be generated. To be formed.

Therefore, in this embodiment, the same operational effects as those of the above-described embodiments can be obtained without the need for the ultrasonic deflector 11 and the like.

In the above, the present invention has been described in detail with respect to specific embodiments, but the present invention is not limited to these, and various embodiments are possible within the scope of the present invention. It will be apparent to those skilled in the art.

[0020]

As can be understood from the above description, according to the soundproofing device of the present invention, the elastic wave curtain formed by the ultrasonic waves in the shape of a hollow cone exerts the sound absorbing action and the sound insulating action by the sound wave attenuation, and the elastic wave is generated. Since the conical space inside the curtain becomes a sound insulation area to the outside of the elastic wave curtain, the sound insulation area is constructed without dividing the space by soundproof walls, and a sound insulation area with excellent access and accessibility is obtained.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment of a soundproofing device according to the present invention.

FIG. 2 is a side view showing another embodiment of the ultrasonic wave generator used in the soundproofing device according to the present invention.

FIG. 3 is a bottom bottom view showing another embodiment of the ultrasonic wave generator used in the soundproofing device according to the present invention.

[Explanation of symbols]

 1 Floor surface 3 Ceiling surface 9 Ultrasonic generator 11 Ultrasonic deflector 13 Inner deflector 17 Base member 19 Ultrasonic oscillator

Claims (1)

[Claims] 1. An ultrasonic wave generation source is disposed above a floor surface, and a hollow conical elastic wave curtain is formed by the ultrasonic waves emitted from the ultrasonic wave generation source. Soundproofing device.