Illumination apparatus
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United States of America Patent
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Feb 5, 2019
Grant Date -
Aug 10, 2017
app pub date -
Apr 30, 2015
filing date -
Aug 13, 2014
priority date (Note) -
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Abstract
The present invention relates to an illumination apparatus (100) comprising a light engine (3) and a first lampshade (1) for accommodating the light engine (3), wherein the first lampshade (1) has a first expansion coefficient, wherein the illumination apparatus (100) further comprises a second lampshade (2) for accommodating the first lampshade (1), wherein the second lampshade (2) has a second expansion coefficient smaller than the first expansion coefficient, and is configured such that the changes in size or shape of the first lampshade (1) can be restrained under a high temperature.
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