| 摘要 |
PROBLEM TO BE SOLVED: To surely and reliably connect a connector even if a disorderly connector connecting action is taken, by providing a current-carrying area to be connected to a conductive pattern covered by a protective member outside the contact part region of a contact member in the electrode part of an electric base. SOLUTION: Two current-carrying heating resistors 1b, 1b in parallel with each other are conductingly connected to conductive patterns at their end parts on one side, and a pair of first and second electrode patterns 1f, 1g provided side by side on the end surface on one side of the longitudinal direction of a heater base surface are electrically connected to the end part of one current carrying heating resistor 1b and the end part of other current-carrying heating resistor 1b respectively. Thereby, a series circuit (primary circuit, AC line) is formed by connecting the first electrode pattern 1f, one current-carrying heating resistor 1b, the conductive pattern, other current-carrying heating resistor 1b and the second electrode pattern 1g in this order. Accordingly, the first and second electrode patterns 1f, 1g are formed so as to overlap a heater surface protective layer 1c, and a current-carrying area can be secured. |
