Pfu Limited

Tadayoshi Shimanuki

Takashi Kitahara

A heat generating cooling device including a heat sink with a plurality of fins and a cooling fan unit mounted on and above the fins and having a motor. At least one auxiliary blade is provided on the bottom surface of the motor and extends in toward the thickness direction of the heat sink. The fins can be formed short to provide blade clearance.

Heat generating element cooling device

A cooling device for a heat generating element which includes a heat sink disposed on a top surface of the element mounted on a printed circuit board, a cooling air throttling mechanism supported by a base surface of the heat sink, and a plurality of heat-radiating fins on the base surface around the throttling mechanism. A plate-shaped cover covers a top surface of the heat sink and has an opening formed at a position facing the throttling mechanism. A cooling fan unit is positioned beneath the opening and mounted to be accommodated in the throttling mechanism.

Heat-generating element cooling device

A cooling device mounts a fan unit above a heat sink. The heat sink is mounted on a heat-generating element or buried therein. The cooling device produces an effective air flow and achieves a uniform cooling action by having the heat sink formed in various shapes. The cooling fan is disposed away from the heat sink or to the side of the sink and is used for effective cooling through an air conduit passage formed by pipes or a cover.

A cooling device mounts a fan unit above a heat sink. The heat sink is mounted on a heat-generating element or buried therein. The cooling device produces an effective air flow and achieves a uniform cooling action by having the heat sink formed in various shapes. The cooling fan is disposed away from the heat sink or to the side of the same and is used for effective cooling through an air conduit passage formed by pipes or a cover.

A cooling device mounting a fan unit above a heat sink mounted on a heat-generating element or buried therein, which produces an effective air flow and achieves a uniform cooling action by having the heat sink shown in various shapes. Further, a cooling fan disposed away from the heat sink or to the side of the same is used for effective cooling through an air conduit passage formed by pipes or a cover.

A cooling device mounting a fan unit (3) above a heat sink (2) mounted on a heat-generating element (1) or buried therein, which produces an effective air flow and achieves a uniform cooling action by having the heat sink (2) embodied in various shapes. Further, a cooling fan disposed away from the heat sink (2) or to the side of the same is used for effective cooling through an air conduit passage formed by pipes or a cover.

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Kahoku-gun, Japan

Tadayoshi Shimanuki