LED Light Bulbs That Last 60 Years to Get Cheaper
LEDs are small and don't give off much light, but they last for literally decades (like, 60 years) and give off virtually no heat, making them three times more efficient than the twisty CFL bulbs. Professor Colin Humphreys at Cambridge University has come up with a way to make them far cheaper than normal, creating a more efficient way to produce gallium nitride, a material required for the production of LEDs. His discovery could pave the way to LED bulbs that cost less than $5 a pop. However, we're still at least a few years away before these could go into mass production, meaning you're going to have to keep hitting the Asprin or guiltily using your old incandescent bulbs. [From: The Daily Mail]
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Comments
4
Subscribe to commentsDarkLightJan 29th 2009 2:26PM
LEDs are the future, and they produce very high quality light too
IMO, we should have skipped CFLs altogether.. I've been using LED lighting for a while, and if you do it yourself, is not expensive at all when you consider the long-time savings (meaning that big companies could have made them consumer-friendly for cheap, they just didn't want to... Of course, everyone likes cash cows)
Oh, just prepare yourself for seeing some WHITE light... There's no -ish tone to speak of here, if you want color, you'll have to paint the walls (Ok there are warm LEDs, but they're less efficient and cost a lot more)
JamusJan 29th 2009 2:27PM
Oddly enough, this past weekend I saw two odd packs of LED lights at Sam's Club: directional 40watts (for can or recessed lighting) and omnidirectional (for lamps, etc..) 40 watts. Here is the kicker... a 3-pack was $14. I started to get one just to see how they looked.
Sam's club item numbers are 116205 and 116198 if you want to check them out.
DarkLightJan 29th 2009 5:18PM
The thing is that those are made out of a bunch of old obsolete-style LEDs glued together... It's almost a scam, those are not any more efficient than CFLs, and while ideally they do last for a long time, in reality they don't, expect the LEDs on it to stop working one by one in a not too distant future (or at least be notoriously dimmer)..
You need to look for the ones with special high power LEDs, they usually only have one LED, or at most 3 LEDs
These LEDs look like this: http://freenet-homepage.de/DJNebel/BilderWeb/Cree1.jpg
And the bulbs look like this: http://www.led-spot-light.de/images/71007ww.jpg (LED inside, huge alluminium thing outside)
When you see one, you'll be astounded at it's light output. If you look directly at it your eyes will hurt :-)
JimFeb 9th 2009 9:27AM
I also saw the LED bulbs at Sam's Club. They were packaged to replace a 40 watt bulb and they used 1.5w themselves. It didn't give the light output on the package. 3 for $14 and change.