| 摘要 |
PURPOSE: Provided is a heating cushion for a chair in a school room or an office using coal, thereby heating easily without a worm air circulator or a stove. It is normally used like a conventional cushion, and when the weather is cold, it is heated by coal in a coal bag. CONSTITUTION: The heating cushion(2) using coal is characterized by simply housing a coal bag(8), wherein the coal bag is characteristically made of vinyl or cloth. It is heated easily and simply by inserting coal into the coal bag(8), when the weather is cold.
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