| 摘要 |
PROBLEM TO BE SOLVED: To provide a direction information pillow capable of helping judge a direction of the head with no requirement of a particular labor before sleeping, no fail and reliableness. SOLUTION: An XY axes geomagnetic sensor 14 senses a direction where the pillow 10 is placed to inform a user of the alarm or the like from an information means such as a sound source circuit 15 when the head remains northward. In the case, a group of first pressure sensors sense that the pillow 10 is laid on a mattress, or beside that, when a group of second pressure sensors sense that the user rests his head on the pillow 10, the geomagnetic sensor 14 detects the direction. COPYRIGHT: (C)2007,JPO&INPIT
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