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Like hell I was just at a Naram in Delton/Kalamazoo Michigan and it gets JUST as god damned hot their (over 90') as it does here in SE PA. I know I spent a week their.
I am sorry but anything colder than you can NOT be perceived as warm. its in defiance of the very definition of "warmer" and "colder" those terms are relativistic terms.
Warmer and colder THAN WHAT? well warmer and colder than YOU.
your 98' (close enough yes skin is colder than that)
Lower than 98 and your physical construct we call your body perceives "colder" higher than 98 and your body perceives warmth.
The point is if you PERCEIVE it physically as "warm" then its probably TOO WARM to be safe for the LED's unless you have a good heatsink on them.
I don't know why people are arguing with me over this crap. Its very simple.
HOT LED'S DIE. its that simple. They do not care if you believe it or not if you like it or not or percieve it as warm or not.
if you over heat an LED it will DIE. period.
Fact 2 - IT DOES NOT TAKE MUCH HEAT TO KILL A WHITE LED.
First the phosphor burns off (making them turn more blue/uv) and then they just DIE.
the higher the temp the faster the death. I had a tube of LED's hit 160's inside the tube. They were dead in 4 days.
I dropped the voltage down to 89volts (variac) so that they were 5' above ambient and they have been going for thousands of hours over the last 3 years without so much as dimming in the slightest.
I am just trying to help. I noticed you said they felt WARM and you were not even TOUCHING THEM.
this means they are way way way too hot. Don't believe me? put them INDOORS where it is warmer above 70'f plug them in at the same power and voltage and LET THEM RUN and let me know how long they last.
I give them a week. (if they really were warm feeling without you even touching them and were normal LED's with no heatsink.
Put them in an array of 50-100 LED's and see how much FASTER they kill themselves.
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