| 摘要 |
PROBLEM TO BE SOLVED: To provide a planar heater capable of easily reducing a resistance value, obtaining desired power consumption even at a low voltage, easily heating a whole planar heating element uniformly, and further facilitating waterproof easily. SOLUTION: On a flexible board 20, two pairs of comb-gear shaped electrode patterns 40 and 50 are formed so that both of comb gears 43 and 53 are geared with each other, and there is provided a planar heating element 10 in which between the adjacent comb gears 43 and 53 of both of the electron patterns 40 and 50 is coupled with a resistor patterns 30 (35) for heating of a plurality of stripe shape. This planar heating element 10 is sealed with waterproof sheets 60 and 70. |
