THERMISTER DEVICE OF POSITIVE CHARACTERISTIC

摘要

A thermister (2) of a positive characteristics is so disposed in a recessed section that one of the two principal faces facing each other faces a bottom section (11) of a case (1) and the other faces an opening face (12) opposed to the bottom section (11). A heat radiation member (5) has flat thermally-coupling sections (52) and a heat radiation cylindrical body (51) which is provided at least on one of the sides of the case (1), i.e. on the bottom section (11) side and the opening face (12) side and which is in surface contact with the side. Thereby, the efficiency of thermal conduction from the thermister (2) of a positive characteristic to the heat radiation cylindrical bodys (51) is improved.