LIGHTING DEVICE WITH HEAT DISSIPATION ELEMENTS
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United States of America Patent
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Issued Date -
Nov 3, 2011
app pub date -
Feb 7, 2011
filing date -
Feb 12, 2010
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Abstract
A lighting device, comprising a solid state light emitter and first and second heat dissipation elements. In some devices, (1) the first heat dissipation element is in the path of at least some of the light emitted, (2) at least half of the 25% of the surface area of a first heat dissipation element that is closest to the first solid state light emitter is exposed, (3) at least part of a heat dissipation element is transparent or reflective, and a portion light from the light emitter goes in a specified range of directions, (4) angular size of gaps between heat dissipation elements are limited, and/or (5) at least 25% of heat generated by the light emitter(s) is dissipated in regions toward which light emitted by light emitter(s) is directed. Also, a lighting device comprising a solid state light emitter and means for dissipating heat.
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