[AT] photo finish

[Carl Gogol]

LEDs do not create a lot of heat in an absolute power sense, but the 
semiconductor junctions that allow them to work are very small.   One of the 
larger engineering problems of making them even less expensive and longer 
lasting is good thermal engineering design to remove the heat efficiently 
from that small light emitting die that actually gets quite hot over its 
small area.

-----Original Message----- 
From: Dick Day
Sent: Sunday, November 24, 2013 11:45 AM
To: Antique tractor email discussion group
Subject: Re: [AT] photo finish

LED's draw so few amps, I cannot imagine that they get very hot. It's a
sealed unit, no air vents. Those are heat sinks, not sure why they are
there. Possibly the same case is used for other types of lights, not sure.

--------------------------------------------------
From: <jtchall at nc.rr.com>
Sent: Sunday, November 24, 2013 7:26 AM
To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
Subject: Re: [AT] photo finish

> I just added one rectangular light to the combine for the unloading auger,
> I
> swear you can stand in the back of the truck and read a book! I've still
> got
> the box it came in, don't know if its Halogen or LED, or what the current
> draw is. I'd like to be able to find a replacement for the sealed beams so
> the tractor will still look original, but if I keep needing to use it at
> night, the original lights may be pulled off and stored away!
>
> That looks to be a pretty good price on the units you installed. I noticed
> what appears to be air fins, does it seem to run pretty hot?
>
> John
>
>
> -----Original Message----- 
> From: Dick Day
> Sent: Saturday, November 23, 2013 10:24 PM
> To: Antique tractor email discussion group
> Subject: Re: [AT] photo finish
>
> John, speaking of lights...
>
> Last year, one of the back cab lights on my NH broke off as I was going
> through some trees. I ordered a set of LED's to replace the back lights.
> The link below takes you to the lights I bought. When I received them, I
> decided to test them out in my shop. The second I hooked one up to a spare
> 12-volt battery, I was nearly blinded. They draw hardly any amps and the
> light cases are very heavy duty. They are so good, I removed my front cab
> lights and installed these and moved the old front ones to the rear.
>
> The amazing thing is that they cost about $23 each.
>
> http://www.amazon.com/gp/product/B009AQTOP2/ref=oh_details_o06_s00_i00?ie=UTF8&psc=1
>
> Dick
> -------------------------------------------------- 
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