| 摘要 |
PROBLEM TO BE SOLVED: To provide a cordless heating pad which reduces weight in total, heats at an appropriate temperature for a long period of time, and has a sufficient strength. SOLUTION: The cordless heating pad is a heating element 3 generating heat by electric power supplied from a battery 1 embedded in a case 2 and heats a radiator plate 4 fixed on the surface of the case. The case 2 has a supporting plate 30 on the inner surface of the radiator plate 4 and a surface plate 20 in a manner to oppose to the supporting plate 30 so that the part between the supporting plate 30 and the surface plate 20 is provided as a housing part 5. An intermediate reinforcing plate 10 is disposed between the supporting plate 30 and the surface plate 20. A boxlike supporting rib 22 formed by connecting to the surface plate 20 is provided between the intermediate reinforcing plate 10 and the surface plate 20 so that the intermediate reinforcing plate 10 is supported by the boxlike supporting rib 22. In addition, a supporting rib 32 is provided by connecting to the inner surface of the supporting plate 30 to support the supporting plate 30 by the intermediate reinforcing plate 10 through the supporting rib 32. COPYRIGHT: (C)2009,JPO&INPIT
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