A very thin fan motor with an attached
heat sink that has
high heat radiation and
air cooling effects in a small, flat, thin
package, that has a simple and easily assembled overall structure as a fan motor, and that has superior
cooling efficiency. A flat fan mounted in various kinds of
electronic equipment that need to radiate heat, and particularly mounted directly on the CPU, characterized by having a fan motor mechanism that comprises a heat plate that supports a rotor fan that can rotate in a central position and that has a contact surface that matches the shape of the external surface of the item (such as a CPU) to be cooled,
rotor magnets that are part of the rotor fan and are positioned around the periphery on the surface of the heat plate, and a
stator coil substrate, by having multiple
metal heat
radiation fins with excellent
thermal conductivity, which are thin heat-radiating fins, arranged in parallel at a
fixed interval on the heat plate pointing outward from the rotor fan as cooling heat-
radiation fins, and by combining the function of cooling
heat sink with the heat radiation fins that conduct the heat absorbed from the heat plate and radiate it away by the action of the air moved by the rotor fan.