| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a recreation device the usability of which is considerably improved by alternatively switching-over the states of presence and absence of magnetic force to shift positions where magnetism is generated to a desired mode. SOLUTION: An electric bed 1 is provided with a body-supporting part 5 for allowing a user to bring at least one part of his/her body into contact therewith and to take a rest posture, and on which a plurality of electric magnet devices 6 are arranged, and a control part 9 for controlling by switching between on and off of the plurality of electric magnet devices 6.</p> |
