JPH01288098A - Vibrator - Google Patents

Abstract

PURPOSE:To increase the acoustic vibrator sensing area by arranging an electroacoustic transducer in an internal space of an enclosed bag sealing a pressed gas. CONSTITUTION:An electroacoustic transducer 16 is arranged in the internal space of an enclosed bag 2 sealing a pressed gas. The enclosed bag 2 whose internal side is pressurized supports a human body by its elastic force. When an electric signal of a music or the like is inputted to the electroacoustic transducer 16, the electric signal is transduced into acoustic vibration. In this case, resonance is caused in the pressed gas sealed in the internal space 4 of the enclosed bag 2, the resonance of the gas causes facial vibration of the enclosed bag 2 and the facial vibration is directly propagated to the human body supported by the enclosed bag 2. Since the front chamber 12 for the resonance is provided nearly to the entire internal part of the enclosed bag 2, a large acoustic vibrator sensing area is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a vibration device that directly transmits acoustic vibrations to a human body.

[Prior Art] A vibration device is disclosed in Japanese Utility Model Application Publication No. 51-123793.

This device is a chair-shaped device in which elastic members are arranged on the seat and backrest, and electro-acoustic transducers such as speakers are connected to the back surfaces of the seat and backrest of the elastic members through diaphragms made of rigid bodies. It is equipped with a container.

A person sits on a seat and leans his or her back against the backrest. When an electrical signal containing music or the like is input to an electroacoustic transducer, this electrical signal is converted into acoustic vibrations. This acoustic vibration is transmitted to the human body via the diaphragm and the elastic member. People sitting on the seat can listen to music directly, not just through their ears. You can feel it in touch.

[Problems to be Solved by the Invention] The conventional vibration device described above transmits the acoustic vibrations generated by the electroacoustic transducer to the human body via a rigid diaphragm, so it is difficult to reduce the perceptible area of the acoustic vibrations. Increasing the size would require arranging a large number of diaphragms and attaching an electroacoustic transducer to each diaphragm. Additionally, because the diaphragm is difficult to resonate at low frequencies, the bass range lacks impact.

An object of the present invention is to provide a vibration device that solves the above problems.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the vibration device according to the present invention has an electroacoustic transducer disposed in the internal space of a sealed bag sealed with pressurized gas.

[Function] A sealed bag with a pressurized interior holds the human body through its elasticity.

When an electrical signal containing music or the like is input to an electroacoustic transducer, this electrical signal is converted into acoustic vibrations. On this occasion,
Resonance occurs in the pressurized gas sealed in the internal space of the airtight bag. At this time, the resonance of the gas causes surface vibration of the sealed bag, and this surface vibration is directly transmitted to the human body held in the sealed bag.

That is, the pressurized gas sealed in the airtight bag functions as both a cushion and a resonator.

Embodiment FIG. 1 is a sectional view of a vibrating device according to an embodiment of the present invention.

The present invention can be applied to a vibrating device having any external shape, for example, the shape of a chair or the like can be adopted, but here, a cushion-shaped vibrating device will be described.

The outer surface of this vibrating device is formed by a sealed bag 2 made of film. The film is suitably made of rubber, but may be made of other materials.

Pressurized air is sealed in the internal space 4 of the airtight bag 2. However, other types of pressurized gas may also be used. A flexible cylindrical support body 6 is erected on the inner surface of the airtight bag 2. The circular opening at the upper end of the support 6 is closed by a partition plate 8 of the same shape, and an opening IO is provided in the center of the partition plate 8. Therefore, the internal space 4 of the airtight bag 2
The interior is divided into a front chamber 12 and a small rear chamber 14 by a support 6 and a partition wall 8. The speaker 16, which is an electroacoustic transducer, faces the front chamber 12 through the opening IO.
It is attached to the rear chamber side surface of the partition plate 8. However, the front chamber 12 and the rear chamber 14 have the same pressure. The speaker 16 has a lead wire 18 for inputting electrical signals containing music or the like.
has.

When the outer surface of the airtight bag 2 is compressed by a human body, the pressure inside the front chamber 12 increases. Therefore, the human body can be held by the airtight bag 2. At this time, the support body 6 is deformed, the volume inside the rear chamber 14 becomes smaller, and a pressure increase of the same magnitude as that in the front chamber 12 occurs in the rear chamber 14 . Therefore, even if the airtight bag 2 is pressed by the human body, the front chamber 12 and the rear chamber 14 maintain the same pressure, and the hard cone paper of the speaker to placed between the two chambers is not damaged. Alternatively, the support body 6 may be provided with ventilation holes.

When an electrical signal is input to the speaker 6 through the lead wire 18, this electrical signal is converted into acoustic vibration, and the speaker 1
Sound waves are radiated from 6 into the front chamber 12. At this time, the front chamber 1
The sound waves propagated inside the airtight bag 2 are reflected by the inner surface of the sealed bag 2, and low frequency resonance occurs in the pressurized gas inside the front chamber 12.

This resonance causes the film constituting the sealed bag 2 to vibrate in a plane.

This surface vibration is directly transmitted to the human body comfortably held on the outer surface of the sealed bag 2. Therefore, music etc. can be experienced directly. Moreover, since the volume of the gas that is the resonator is large, sounds in the low frequency range resonate well, so you can enjoy music with powerful deep bass. Further, since the front chamber 12 for resonance is provided almost entirely inside the airtight bag 2, the acoustic vibration sensing area is large.

Note that since the pressurized gas is sealed in the internal space 4, this space hardly deforms, so even if the internal space 4 is not filled with Scotto foam, etc., which is highly elastic and has good air permeability, the airtight bag 2 The inner surfaces of the two surfaces do not come into contact with each other and their surface vibrations are not hindered. However, support columns may be provided within the internal space 4 for the purpose of further reinforcement.

[Effects of the Invention] As explained above, the vibration device according to the present invention has an electroacoustic transducer disposed in the internal space of a sealed bag that seals pressurized gas. If the number is at least large, the acoustic vibration sensing area can be increased. Moreover, since it utilizes the resonance of a gas having a large volume, it has a powerful bass range and can transmit heavy bass tones in music with high efficiency. Therefore, the dimensions of the electroacoustic transducer may be small. Furthermore, since gas resonance is utilized, the present invention can provide a vibrating device that is simple in structure and lightweight.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a vibrating device according to an embodiment of the present invention. Explanation of symbols 2... Airtight bag, 4... Internal space, 16... Speaker. Patent applicant: Toyo Rubber Industries, Ltd. Figure 1

Claims (1)

[Claims] 1. A vibration device characterized in that an electroacoustic transducer is placed in the interior space of a sealed bag sealed with pressurized gas.