Re: Switches and CFL lamps
- From: "Peter Hucker" <none@xxxxxxxx>
- Date: Sat, 01 Nov 2008 16:38:51 -0000
On Sat, 01 Nov 2008 13:03:22 -0000, Jeff Layman <jmlayman@xxxxxxxxxxxxxxx> wrote:
Peter Hucker wrote:
(snip)
LEDs WILL take over our lighting. They may need to get more
efficient first though. They already have advantages in things like
traffic light5s and cars, as they don't need changing so often, and
are instant on/off.
I am sure that they will. But I'm not so sure about their predicted life
(compare what is still being said about CFLs with real-life experience).
The high-power LEDs do run really hot, and need a good-sized heatsink to
deal with the waste heat. No good adding fans to cool them, as they aren't
reliable enough for really long-term usage.
When they become more efficient, there will be less heat output.
What about a heat pipe like thy use in computers?
Of course it may be that semiconductor LEDs will be superseded by OLEDs.
Not for every use, perhaps, but where one needs diffuse lighting they will
be OK. I can foresee the time when we don't have luminaires as such - the
whole ceiling (and perhaps walls) will be a light emitter.
From wikipedia: "The biggest technical problem for OLEDs is the limited lifetime of the organic materials. In particular, blue OLEDs historically have had a lifetime of around 14,000 hours"
--
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A compact disc player.
.
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