| 摘要 |
PROBLEM TO BE SOLVED: To provide a sheet-like heating element 1, capable of enhancing temperature rise performance, suppressing deterioration in heating distribution, enlarging the freedom of design, and keeping heating action, even if a pair of electrodes is broken. SOLUTION: This sheet-like heating element has a pair of first electrodes 3a, 3b placed on an insulating substrate 2 and formed by printing of conductive paste containing conductive powder and drying; a PTC-heating element 4 placed on the first electrodes 3a, 3b; and a pair of second electrodes 5a, 5b placed on the PTC heating element 4 and formed by printing of the conductive paste containing conductive powder and drying, and the first electrodes 3a, 3b and the second electrodes 5a, 5b are formed in the same pattern, piled up on each other, and connected electrically in parallel. |
