JPH067238A - Sensible acoustic mat - Google Patents

Abstract

PURPOSE:To increase a sensible effect by containing a flexible film dispersing vibrations by close contact with an piezoelectric element driven with the output amplification of a sound regenerator into the inside of a hole having the rugged face provided at the four corners of a porous mat. CONSTITUTION:A thin film-piezoelectric element 6 made of polyvinylidene fluoride or the like is oscillated by amplifying the output of a sound regenerator, a taperecorder, a player, etc., for instance. A dispersing plate 7 made of a flexible film is closely attached to the piezoelectric element 6 and contained in the holes provided at the four corners of a mat 2. A coarse surface 4 is formed at the inner peripheral face of the holes. Sound oscillations are transmitted from the dispersing plate 7 to the mat 2 through the space 5. In this way, one does not feel unpleasant sense against the oscillating source but a pleasant oscillation and sound are transmitted to the users.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sensational sound mat which can reproduce a realistic sensation by stimulating a user with sound and vibration.

[0002]

2. Description of the Related Art As shown in FIG.
A signal from the audio reproducing device 8 is applied as a signal amplified and output by the amplifying device 9 to the speaker 11 that responds to the low frequency band audio signal provided inside the airtight bag 10. Therefore, the cone portion of the speaker 11 that receives the amplified and output audio signal vibrates, and the entire surface of the hermetically sealed bag 10 vibrates by transmitting air. (For example, Japanese Patent Laid-Open No. 1-288098
Issue)

[0003]

However, in the above-mentioned conventional structure, when used as a mat, it is difficult to avoid feeling a foreign object because the speaker is built in the sealed bag. Further, since the closed bag is used, there are problems that elasticity and breathability are difficult, and local and three-dimensional acoustic vibration cannot be obtained only by vibration of the entire mat.

The present invention solves the above-mentioned problems, and provides a sensational acoustic mat that can obtain local and three-dimensional acoustic vibrations, does not feel a foreign body as a vibrating body, and does not impair the elasticity and breathability of the mat. This is the purpose.

[0005]

In order to achieve the above object, the present invention provides an audio reproducing device, an amplifying device for amplifying a signal output from the audio reproducing device, and an amplified signal output from the amplifying device. A piezoelectric element that generates an applied vibration, a diffuser plate made of a flexible film that is in close contact with the piezoelectric element and diffuses the vibration, and a void portion having an uneven surface at a corner portion that accommodates the piezoelectric element and the diffuser plate. A mat made of a porous material is provided.

[0006]

According to the present invention, when the amplified audio signal is applied to the piezoelectric element, the vibration of the piezoelectric element and the diffusing plate becomes an acoustic vibration from the corner due to the void of the mat, and the elasticity of the mat is elastic. In addition, the user can be provided with a realistic sound effect that does not impair breathability.

[0007]

Embodiments of the present invention will be described below with reference to FIGS.

In FIG. 1 to FIG. 3, reference numeral 1 is a surface cloth of a perceptual acoustic mat, 2 is a mat made of a porous material, and the mat 2
The corner portion 3 has the void portion 5 of the uneven surface 4. In the void portion 5, a thin film piezoelectric element 6 made of polyvinylidene fluoride (PVDF) or the like that vibrates when an applied voltage is applied.
Then, a dispersal plate 7 made of a flexible film that is in close contact with the piezoelectric element 6 and diffuses vibration is provided inside. The piezoelectric element 6 includes
The signal output from the audio reproducing device 8 such as a tape recorder or a player is applied as a signal amplified by the amplifying device 9.

In the above structure, the acoustic signal amplified by the audio reproducing device 8 through the amplifying device 9 is applied to the piezoelectric element 6 and transmitted to the diffusion plate 7 as vibration. The acoustic vibration generated by the diffusion plate 7 is not directly transmitted to the mat 2,
The uneven surface 4 of the voids 5 is transmitted to the mat 2 so that the user can feel the vibration as well as the pores of the mat 2 and the cover cloth 1 so that the user can feel the sound as well. Both sensation effects can be obtained. Further, since the diffusion plate 7 is provided at the corner portion 3 of the mat 2, there is an effect that stereo acoustic vibration such as stereo can be obtained, the sensation effect is improved, and the elasticity and air permeability of the mat are not impaired.

[0010]

As described above, the sensible acoustic mat of the present invention has the following advantages. (1) Since the piezoelectric element that generates vibration and the diffusion plate that diffuses the piezoelectric element are provided inside the void portion of the uneven surface, the user can obtain both vibration and acoustic sensation effects. (2) Since the diffusion plate is provided at the corner portion of the mat, three-dimensional acoustic vibration such as stereo can be obtained, the sensation effect is improved, and the elasticity and breathability of the mat are not hindered. (3) Since the piezoelectric element and the diffusing plate are formed of a thin film and a flexible film, the sense of foreign matter to the vibration source is hardly felt.

[Brief description of drawings]

FIG. 1 is a block diagram of a body acoustic mat according to an embodiment of the present invention.

FIG. 2 is a perspective view of the mat portion of FIG.

FIG. 3 is a cross-sectional view of a main part of the mat part of FIG.

FIG. 4 is a block diagram of a conventional body acoustic mat.

[Explanation of symbols]

 2 mat 5 void 6 piezoelectric element 7 diffuser 8 audio player 9 amplifier

Claims (1)

[Claims] 1. A sound reproducing device, an amplifying device for amplifying a signal output from the sound reproducing device, a piezoelectric element to which the amplified signal output from the amplifying device is applied to generate vibration, and the piezoelectric element. A sensory acoustic mat comprising: a diffusion plate made of a flexible film that is in close contact with the substrate and diffuses vibrations; and a mat made of a porous material having voids on the uneven surface at the corners that accommodate the piezoelectric element and the diffusion plate.