| 摘要 |
In a ceramic heater according to the invention, a heating section has a meandering shape to include a pair of first straight segments, a plurality of second straight segments, and a plurality of curved segments. Each of the first straight segments extends in the longitudinal direction of a ceramic sheet and has a center line. The second straight segments are interposed between the first straight segments in the lateral direction of the ceramic sheet. Each of the second straight segments extends obliquely with respect to the longitudinal direction of the ceramic sheet. Each of the curved segments connects ends of an adjacent pair of the first and second straight segments and has a center line. The sum of curvature diameters of the center lines of the curved segments is greater than a distance between the center lines of the first straight segments in the lateral direction of the ceramic sheet.
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