| 摘要 |
PROBLEM TO BE SOLVED: To enable electrical conduction between a PTC(positive temperature coefficient) thermister and a power supply member to be ensured even if insulating resin is charged. SOLUTION: A pair of power supply members 6a and 6b formed in a comb shape with a metal material having conductivity are provided with them geared with each other on a surface of an insulation plate 5 formed in a sheet with a material having electrical insulation property. Plural PTC thermisters 3 are arranged with them encompassing a pair of these power supply members 6a and 6b and spaced at specified intervals with each other. The PTC thermisters 3 are arranged each other at specified intervals. The PTC thermisters are fixed to the power supply members 6a and 6b by means of a snap 7 having conductivity. Thus, since the plural PTC thermisters 3 can be provided with them scattered longitudinally and horizontally, if a plane spreading longitudinally and horizontally is heated, the number of heaters to be used is reduced and wiring or the like is easy compared with when they are arranged in line. In addition, even if an external force is applied to a PTC heater main body 2, the snap 7 is slackened, whereby the PTC termisters 3 are never destroyed or slipped off. |
