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Environment & Energy

In reply to the discussion: LED Bulb Shopping [View all]

OKIsItJustMe

(21,732 posts)
5. Many LED bulbs have a surprising weight to them
Fri May 15, 2015, 07:57 AM
May 2015

This is a metal heat sink. It’s important for that heat sink to be able to do its job.

Cree came up with a brilliant idea. They realized that the need for a sealed light “bulb” to prolong the life of a filament no longer exists. So, they cut vents in theirs!

http://spectrum.ieee.org/tech-talk/semiconductors/devices/cree-loses-heat-sink-to-engineer-cheaper-led-bulb

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