US 6,552,902 B2Granted

Turbinate heat sink

AssigneeFoxconn Precision Components Co., Ltd.

InventorsEric Cho, Carey Lai, Mark Lin

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Abstract

A heat sink (10) includes a circular base (20), a plurality of fins (30), and a central post (40). The base is adapted to be in thermal contact with an electronic device, to remove heat therefrom. The post extends from a top surface (26) of the base. The post has a first surface connected to the top surface and a second surface (44) dimensioned according to a heat sink fan to be attached thereon. The post also has a concave side surface (42) between the second surface of the post and the top surface of the base, for directing airflow. The fins are identical in height to the post. The fins are curved, aligned and spaced from each other at uniform intervals corresponding to directions of airflow generated from the fan. These minimize resistance to cooling air entering or exiting the heat sink.

Claims12

Dependent claims

A heat sink comprising:

a circular base adapted to be in thermal contact with an electronic device;
a post extending from a top surface of the base, the post being coaxial with the base and having a first substantially round surface connected to the top surface, a second substantially round surface smaller than the first surface and a concave side surface connected between the first and second surfaces, thereby minimizing resistance to incoming airflow and directing airflow toward an exterior of the heat sink;
and
a plurality of fins extending from the top surface of the base around the post;
wherein a support portion extends from the base adapted for contacting the electronic device and removing heat therefrom, and the support portion defines a groove adjacent a conjunction of the base and the support portion, the groove having a diameter less than a diameter of the support portion and adapted to receive a clip thereby attaching the heat sink to the electronic device.

2 more elements

Dependencies are inferred from the claim text.