The object of the present invention is to enable reliable supply of oxygen which is necessary for a fuel cell to generate electric power, to the fuel cell. In a bottom surface of a casing of a camera, a tripod socket for mounting a tripod is disposed in the vicinity of the right end portion, and air orifices for linking the space inside a cell compartment for accommodating a fuel cell with the outside of the casing is disposed in the vicinity of the left end portion, respectively. As a result, even when the tripod is connected to the camera, the air orifices are not closed by the pan head of the tripod, oxygen (air) can be constantly supplied to the fuel cell accommodated inside the cell compartment, and the fuel cell can continuously generate a sufficient quantity of electricity. The present invention can be employed in a camera.