Illumination apparatus with heat radiation member
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United States of America Patent
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May 30, 2017
Grant Date -
Dec 1, 2016
app pub date -
May 11, 2016
filing date -
May 29, 2015
priority date (Note) -
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Abstract
A thin-type light illuminating apparatus with a heat radiation member having high heat radiation efficiency. The light illuminating apparatus for illuminating light in line shape extending in a first direction on an illumination surface includes an elongated substrate extending in the first direction, a plurality of light emitting diode (LED) light sources on the substrate, a heat transfer pipe extending in a second direction, and configured to transfer heat generated from the LED light sources in the second direction, a heat radiation sink having a plurality of heat radiation fins protruding in a third direction, an illuminator having a thin box shape and configured to house the substrate, the heat transfer pipe and the heat radiation sink and to form a wind tunnel, and a centrifugal fan in the second direction between the substrate and the heat radiation sink, and configured to draw air from outside into the wind tunnel.
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