| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To prolong usage time with a battery by enlarging erectric resistance of a heat generation body in the initial stage of usage and reducing power consumption. <P>SOLUTION: A cordless heating pad includes: a case 2; the battery 1 for charging, incorporated in the case 2; a first heat generation body 3A for generating heat with power to be supplied from the battery 1; a control circuit 6 for controlling external power for charging the battery 1, so as to charge the battery 1; and a second heat generation body 3B to be controlled by the control circuit 6, and generating heat by being supplied with the external power. The control circuit 6 supplies the external power to the battery 1 and the second heat generation body 3B when te external power is supplied, controls the second heat generation body 3B to be in a heat generation state, and controls the power of the battery 1 to be in a power supply state to the first heat generation body 3A when the external power is not supplied. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
