PROBLEM TO BE SOLVED: To provide a heater unit the quality of which can be guaranteed by an extremely simple work without understanding and confirming the state of a structure, having micro holes or gaps to be reinforced and repaired, more than required.SOLUTION: In a planar heating element where a heat insulating material, a heater, and a metal plate on the underside of the heater are arranged in lamination and the laminated members are integrated integrally and reliably, the heater wire in the heater is sandwiched by relatively thin metal plates having a high thermal conductivity.COPYRIGHT: (C)2012,JPO&INPIT【課題】強化補修の対象となる微小な孔や隙間が沢山ある構造物の状態を必要以上に把握確認することなく、然も極めて簡単な作業で品質保証が行えるヒータユニットを提供する。【解決手段】断熱材とヒータ、該ヒータの下側に金属板を積層状態に配設形成し、積層各部材を確実に一体的に形成した面状発熱体であって、前記ヒータに於けるヒータ線を熱伝導性が高く比較的薄い金属板でサンドイッチ状に挟持する。【選択図】図2
