HEAT DISSIPATION DEVICE
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United States of America Patent
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N/A
Issued Date -
Mar 7, 2013
app pub date -
Apr 26, 2012
filing date -
Sep 5, 2011
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A heat dissipation device includes a fan and a heat sink located at the air outlet of the fan. The heat sink includes a first fin set arranged at a central portion of the air outlet, and two second fin sets respectively arranged at a side portion of the air outlet. The first fin set includes a plurality of first fins with a first passage defined between each two neighboring first fins. Each of the second fin sets includes a plurality of second fins with a second passage defined between each two neighboring second fins. Each of the second fin sets defines an undercut near the air outlet of the fan. The first passages communicate with the central portion of the air outlet of the fan. Each of the undercuts of the second fin sets communicates with corresponding side portion and corresponding second passage.
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