An electronically controlled electric fan (10) cooled by pressurized ambient air, includes: a motor (11) furnished with a cover (12), a mechanical assembly rotating a wheel (15) and a casing (13), the motor housing at least its electronic control circuit (14) and includes at least one inlet orifice (I) and one outlet orifice (S) for the pressurized ambient air, a fan wheel (15) and a mechanical assembly rotating this wheel, a motor support (16), the ambient air being suitable for passing through the motor, and its mechanical assembly and the support, the electric fan including: a confinement element (20) placed inside the motor so as to confine the pressurized ambient air between: a heat sink (18) integral with the electronic control circuit (14), and a portion of the motor including no sensitive electronic components.