A digital camera includes a first frame formed of a thermal conductive material; an imaging unit disposed in front of the first frame; an optical system including lenses and focusing image light on the imaging unit; a first display unit disposed on a rear portion of the first frame; a first heat generator that located at a side surface of the optical system and disposed on a front portion of the first frame; a second heat generator disposed on a front portion of the first heat generator; a second frame formed of a thermal conductive material, and disposed between the first heat generator and the second heat generator; a third frame formed of a thermal conductive material, and disposed on a front portion of the second heat generator; and a second display unit disposed on a front portion of the third frame.