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From: kludge@panix.com (Scott Dorsey)
Newsgroups: rec.arts.sf.written
Subject: Re: The insane progress nobody is talking about
Date: 21 Jun 2024 23:01:58 -0000
Organization: Former users of Netcom shell (1989-2000)
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Lynn McGuire  <lynnmcguire5@gmail.com> wrote:
>I am having to replace my 100 watt equivalent 15 watt actual LED bulbs 
>in my office building every three years or so.   I have about a hundred 
>light fixtures in can lights, both inside and outside (mostly inside). 
>I use the lights about 50% of the time.

This about typical for the cheap no-name lamps when used in cans. 

>Evidently, the LED bulbs in the can lights is causing the LED electronic 
>circuit board to overheat since the bulb is upside down, base up.  Many 
>of the LED bulbs that fail have discoloration and cracks in the base.

This is a combination of them being upside-down (and even the crappy ones 
say on the datasheets that they can be used in any direction, even though
they usually can't) and the design of the cans which are intended for 
incandescents.

Look for the Cree lamps that are marked "Good for Enclosed Use."  They will
run twice the cost of the cheapies but last much more than twice as long.
(And of course the labour for relamping gets saved too.)
--scott

-- 
"C'est un Nagra. C'est suisse, et tres, tres precis."