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JP2002065434

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DESCRIPTION JP2002065434
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
pillow with a built-in speaker capable of listening to sound from the inside of the pillow by
incorporating a PZT ceramic piezoelectric speaker in the pillow.
[0002]
In the prior art, if you are sitting on the bedside and listening to music or watching TV while
considering the volume around, lower the volume of the device or use an earphone or a
headphone. In order to maintain the sense of reality, there was no way other than bringing the
TV itself closer or bringing the speakers of the audio device close to the bedside. However, the
method of lowering the volume of the device itself lacks the sense of reality, and the method of
using the earphone or the headphone has made the cord from the television or audio device body
to the ear annoying and not easy to turn over. There was also a sense of discomfort or discomfort
for the earphone or headphone to directly contact the ear. Furthermore, with the method of
bringing the television itself closer or bringing the speakers of the audio equipment close to the
bedside, movement was difficult due to the weight and size of the speakers.
[0003]
Also, since the conventional speaker has directivity, it is necessary to always point the speaker
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toward the ear when built in a pillow, and a magnet is built in and electromagnetic waves are
generated, so long as you listen to it for a long time There was also the possibility of adverse
effects. In addition, since speakers using conventional corn paper under high temperature and
high humidity environments, the sound quality is degraded, and it has always been necessary to
consider the placement and built-in state of the pillow.
[0004]
An object of the present invention is to consider the volume to the surroundings without using
earphones and headphones, and to be able to listen to a realistic sound without considering the
directivity of the speaker.
[0005]
SUMMARY OF THE INVENTION According to the invention of claim 1, the PZT ceramic
piezoelectric speaker itself is built in a pillow.
Therefore, it is not necessary to bring the speaker close to the hand, and the trouble of attaching
earphones and headphones is also eliminated. In addition, there is no need to consider the
directivity and the adverse effect of electromagnetic waves, and there is no fear of degrading the
sound quality even in a hot and humid environment.
[0006]
DETAILED DESCRIPTION OF THE INVENTION Embodiments of the invention will be described
with reference to the drawings. When listening to the music of the audio device 5, by connecting
the jack 4 at the end of the cord 3 to the audio device 5, the piezoelectric element of the PZT
ceramic piezoelectric speaker 1 emits vibration sound and transmits it to the tip material
contained in the pillow 2 Thus, the vibration sound is amplified and the user can listen to realistic
music from the inside of the pillow 2.
[0007]
According to the first aspect of the present invention, there is provided a pillow comprising a
small-sized and thin PZT ceramic piezoelectric speaker, wherein the pillow comes out of the
pillow without losing its elasticity and lightness. By connecting the jack to a television or audio
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device, you can hear the sound from the speaker built into the pillow, and it is not necessary to
bring the television itself close or to bring the speaker of the audio device close to hand.
[0008]
In addition, when the PZT ceramic vibrates under voltage drive, the tip material contained in the
pillow acts as a resonant plate to amplify the vibration noise and to create a realistic sound with
an overall spread from the inside of the pillow. It becomes possible to listen, and it is not
necessary to consider directivity as in a conventional speaker.
Furthermore, since PZT is used, it is not necessary to consider the adverse effects of
electromagnetic waves on the human body, and there is no need to consider the place of the
pillow because the sound quality is not degraded even in a hot and humid environment .
[0009]
Brief description of the drawings
[0010]
Fig. 1 is an overall view of a pillow with a built-in PZT ceramic piezoelectric speaker
[0011]
Explanation of sign
[0012]
1 PZT ceramic piezoelectric speaker 2 pillow 3 code 4 jack 5 audio equipment
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