Patent ID: 7064301

Claim:
An electric heater comprising: a plurality of radiation members, each having a radiation fin and a radiation fin supporting plate surrounding the radiation fin formed integrally with the radiation fin by brazing; heating means having a guide plate having a plurality of through-holes, an electrode plate contacting with the guide plate, a plurality of PTC elements respectively inserted into the through-holes of the guide plate and contacting with the electrode plate for generating heat when electric power is supplied, and an insulating film contacting with a side surface of the electrode plate; a plurality of flat tubes, each having the heating means therein, being located between the radiation members, the outer surface of the flat tube being compressed for fixing the heating means mounted therein; first and second support frames oppositely arranged on sides of the outermost radiation members for supporting and fixing the radiation members and the flat tubes; and first and second caps for supporting both end portions of the first and second support frames and both end portions of the flat tubes.