| 摘要 |
Projections are located at an inner face of a case member so as to form air passages in first and second directions. A disposable pocket heater and a gel container are set inside the projections and the case member is assembled. Since the air passages in both directions are formed on a whole surface of the disposable pocket heater, oxygen is supplied to the whole disposable pocket heater and the whole gelling agents in the gel container is heated to almost uniform temperature. |
