Electric fan and electric aircraft

An electric fan comprising:

• an electric motor that includes an output shaft extending along an axis line and a tubular housing centered on the axis line;
• an inner duct provided on a downstream side of the electric motor;
• a plurality of blades mounted on the output shaft;
• and
• a cooling member having a plurality of fins provided on an outer peripheral surface of the housing,
• wherein the inner duct is gradually reduced in diameter from a first side in a direction of the axis line toward a second side in the direction of the axis line,
• an intake port through which air pressure-fed by the blade is taken in toward the electric motor is formed in the housing,
• an exhaust port for discharging air that has flowed through the intake port is formed in an end portion of the inner duct on the second side in the direction of the axis line,
• the fin extends from a rear side in a rotation direction of the blade toward a front side in the rotation direction of the blade, while extending toward the second side in the direction of the axis line from the first side in the direction of the axis line, and
• an interval between the plurality of fins in a circumferential direction of the electric fan is made narrower close to a fuselage in the circumferential direction.