LED illuminating device with LED chip
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United States of America Patent
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Apr 27, 2010
Issued Date -
N/A
app pub date -
Feb 29, 2008
filing date -
Sep 10, 2007
priority date (Note) -
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Abstract
An LED illuminating device includes a column-shaped thermally conductive member having a taper-shaped portion at a front end thereof and being electrically conductive; a first insulating layer partially covered on the taper-shaped portion; a taper-shaped member sleeved onto the first insulating layer, covered above the taper-shaped portion, and spaced from the taper-shaped portion by the first insulating layer having a plurality of through holes and being electrically conductive; and a plurality of LED units mounted to the taper-shaped portion, passing through the through holes respectively, and exposed outside the taper-shaped member. Each of the LED units includes at least one LED chip having two electrodes electrically connected with the thermally conductive member and the taper-shaped member respectively. Therefore, the LED illuminating device has preferable efficiency of thermal dissipation for LEDs and provides larger area for mounting LED units thereto.
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