The present invention is to provide a case comprising a frame having at least one bending section each provided at its rear proximate its bottom, the bending section being formed by bending an extension of the bottom of the case upward so as to form a distance between the bending section and the rear of the frame, the bending section including at least one first fastening member; and a fan secured to the frame by fastening at the first fastening member of the bending section. In response to activating the fan, fresh air is drawn into the frame or hot air inside the frame is driven out. By utilizing the present invention, ventilation is realized with heat generated by the electronic and electrical components in the case being sufficiently dissipated.