| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a heater for heat medium which is reduced in size and cost, can enhance heat transfer performance and can efficiently cool thermogenic electric parts on a board to control a PTC heater, by reducing the thermal contact resistance between a flat heat exchanging tube and the PTC heater. <P>SOLUTION: The heater for heat medium includes a plurality of flat heat exchanging tubes 12, the PTC heaters 13, which are assembled between the flat tube parts, a heat exchanging presser 15, which presses and fixes the flat heat exchanging tubes 12 and the PTC heaters 13 from the side of one face of the flat heat exchanging tube 12 against the inner face of a casing 11, and a control board 17, which is arranged on the heat exchanging presser 15 and on the surface of which a control circuit 21, including the thermogenic electric parts 20 for controlling the PTC heater 13, is mounted. The control board 17 is provided with a heat through part which passes through to both sides, corresponding to the mounting position of the thermogenic electric parts 20, and the thermogenic electric parts 20 are mounted to be coolable through the heat through part, using the heat exchanging presser 15 as a heat sink. <P>COPYRIGHT: (C)2013,JPO&INPIT |
