PURPOSE: To heat-insulate and protect a gas cock, and to miniaturize a heater proper by disposing a gas cock encasing chamber surrounded by a heat shielding wall and a cooling air passage to the lower section of a base plate section such as a cooking plate.

CONSTITUTION: The chamber 7, which is surrounded by the heat shielding wall 8, to the inside the cooling air passages 10, 11 are formed and which encases the gas cock 5, is disposed to the lower section of the base plate section 3. According to this constitution, the hot air of a heat accumulating chamber C, the gas burner 1, etc. is interrupted by the heat shielding wall 8 and cooling air flowing in the cooling air passages 10, 11 while cooling air B directly cools the gas cock 5. Accordingly, the gas cock is positively heat-insulated and protected while the heater proper can be miniaturized only by the gas cock 5 section because the gas cock is not projected above the mounting plate 3.