| 摘要 |
PROBLEM TO BE SOLVED: To provide a brushless fan motor capable of coping with the situation that the specification of power voltage of a vehicle will be changed and increased in the future while keeping the present performance and without changing the present driving circuit including transistors. SOLUTION: This brushless fan motor 10 can suck air from a suction port 16 and discharge it from a discharge port 18 with rotation of a rotating fan 22. A transistor 36 constituting a part of a motor driving circuit and having an integrated heat radiating fin 48 is disposed near the discharge port 18, and is forcibly cooled by discharge wind by the rotating fan 22. Therefore, even if the power voltage of the vehicle is changed and increased in the future, the transistor 36 forcibly cooled by discharge wind having high flow velocity and flow rate, and the present transistor 36 can be used. |
