A fuel cell case including a ventilating chamber disposed on an inside surface of the fuel cell case, a ventilator formed inside the ventilating chamber and an air inlet port formed on the outer surface of the ventilating chamber is disclosed. The ventilator may be formed protruding into the ventilating chamber. The fuel cell case may be formed such that ambient atmosphere is in fluid communication with the ventilating chamber, but water or other fluids outside the case do not enter the ventilator.