| 摘要 |
A PTC heater is disclosed. The PTC heater of the present invention includes radiation fins (300), and a PTC rod (100), which has therein upper and lower junction surfaces (122), each of which is in close contact with one side of the corresponding radiation fin. Fin guide protrusions (110) are integrally provided on respective opposite edges of each of the junction surfaces. The PTC heater further includes frame bars (500), which couple the PTC rod and the radiation fins to each other. Each frame bars has a bent part (525), which is convex towards the radiation fins. The PTC heater further includes housings (600) and (700), which are provided on respective longitudinal opposite ends of the frame bars. Each radiation fin is directly fitted between the corresponding fin guide protrusions. The frame bars keep the radiation fins in close contact with the PTC rod using the elastic force of the bent parts thereof. |
