Device for generating a cooling air flow in a preferential flow direction for cooling electrical components
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United States of America Patent
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Issued Date -
Mar 1, 2012
app pub date -
Aug 31, 2011
filing date -
Sep 1, 2010
priority date (Note) -
Abandoned
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Abstract
The device for generating a cooling air flow in a preferential flow direction for cooling electrical components, particularly LEDs, comprises a first and a second channel wall (34,36) having mutually confronting inner sides, and an oscillation drive means (42) for generating an oscillating movement of at least a partial region (38) of at least one of said channel walls (34,36) in the direction toward the other channel wall and away therefrom. The inner side of at least one of said two channel walls (34,36) has a surface structure (30) designed for anisotropic flow, which has a smaller flow resistance coefficient in the preferential flow direction (28) than in a direction extending at an angle to the preferential flow direction (28) and particularly in a direction extending opposite to the preferential flow direction (28).
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