On Sat, 21 Nov 2009 12:21:55 -0500, Nate Nagel
wrote:

wrote:
On Sat, 21 Nov 2009 08:18:48 -0500, Nate Nagel
wrote:

wrote:
On Fri, 20 Nov 2009 20:43:59 -0500, "Stormin Mormon"
wrote:

I've seen LED replacments for tail lights. Any good? Dunno.
Would be nice to see fairly priced LED replace for household
bulbs. I've not seen them yet.
A lot of new cars already come equipped with LED tail Lights. They are
very bright, and if one LED fails, you still have a lot of light. The
only thing I don't like about them on my car is that there is no
warmth generated to de-ice the lenses in winter. Tail light lenses are
plastic, so there is a limit to how much you can do to clear them with
an ice scraper without scratching them.

Right, my original comment was referring to retrofitting
LEDs in an older vehicle. Nothing good seems to be available there, at
least not in a plug and play (or nearly so) solution.

nate

I've seen plenty of direct replacements for 1157 incandescents,
complete with standard bayonet base.


I've tried a couple out of curiosity, they range from "OK but about half
the apparent brightness of a 1034 or 1157" or "so dim you'd have to be
insane to even think about using them." Nothing actually "acceptable."

None of the vendors of same are willing to put in their documentation a
comparison of brightness between their "bulbs" and a standard 1034/1157.

nate

I haven't tried them myself, as my cars already have LED tail and
brake lights. My greatest experience is in use of LED's to replace
interior lights in yachts, as well as Navigation lights, which have
very strict requirements set by the government. They have to be
visible for a specified distance, and in specific arcs of coverage,
both vertical and horizontal. They need to have full brightness in the
specified coverage parameters. Obviously single LED's won't do that,
which seems to completely stymie Josepi. The simple answer is that
most LED replacements for incandesent bulbs in almost ANY application
other than indicator lights on a panel, are accomplished by use of
arrays of LED's, not a single LED.