To provide a cigar lighter assembly capable of assuring favorable electric contact with a power supply for feeding a current to a heater element.

The cigar lighter assembly is equipped with a heating unit (100) and a socket (300) to allow the insertion of a heating unit assembly. A heating device (100) is equipped with a knob (102) which is coupled with an ash guard (104) where a plurality of ash guard lags (105) are folded at the periphery of an annular projection (106) formed preferably on the knob (102), and a spring holder (108) in a cylindrical shape is fixedly attached to the knob (102).