| 摘要 |
PURPOSE:To improve operation property by combining the control circuit of a frame type foot-warmer and the operation section of a top board placed onto the body through a thick bedquilt by the line of magnetic force. CONSTITUTION:A control section 3 is mounted to the foot-warmer body 1 with a heating element 2, and the coil 4 is annulary arranged to an upper surface section. The operation section 7 is set up to the top board 5 placed onto the body 1 through the thick bedquilt 6, and the coil 8 is annularly disposed in concentrical form with the coil 4. The spread of the unnecessary line of magnetic force of the combination of the line of magnetic force between the coils 4, 8 is inhibited by concentrically arranging a short coil 14 to the outer circumferential section of the coil 4 or 8. |
