Wheres heatsink on a incadecent replacement bulb?

Huckster79

Huckster79

Well-Known Member
So i got a couple 10w draw 60w equiv store brand led incadecent replacement bulbs for supplimenting a shady corner with the globes cut off.... how come these 10w fixturez have no active or significant passive heatsink that i can see? If i built one id need bigger heatsink than this bulb has, what is different about them that allows this?
 
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nfhiggs

nfhiggs

Well-Known Member
Huckster79 said:
So i got a couple 10w draw 60w equiv store brand led incadecent replacement bulbs for supplimenting a shady corner with the globes cut off.... how come these 10w fixturez have no active or significant passive heatsink that i can see? If i built one id need bigger heatsink than this bulb has, what is different about them that allows this?
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Its only 10W. Doesn't take a lot to dissipate 5-6W of heat.
 
Rahz

Rahz

Well-Known Member
They probably run close to the thermal limits. LED will be fine but it's part of the reason they usually only provide around 120 LPW. The circuit probably isn't going to last the length of diode lifespan. Use in recess lighting can also decrease lifespan. I've read recently that rectification is still being improved and +90% efficiency is now possible. 7-10 year bulbs will eventually be possible but probably not a good bet in current offerings.
 
thetr33man

thetr33man

Well-Known Member
The base is usually the heatsink, if your bases get hot, you can get little fin sinks that are used on RAM memory in computers that might help, probably not worth the hassle tho..
 
Huckster79

Huckster79

Well-Known Member
thetr33man said:
The base is usually the heatsink, if your bases get hot, you can get little fin sinks that are used on RAM memory in computers that might help, probably not worth the hassle tho..
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Yea prob b not they are about $1.50 each and by far not my main light source. I was just curious really...
 
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