Heat lamp?

[Tripmaker]

I'm in the process of wiring and have installed two aircraft type 12V reading lights. When testing them I found they do generate some heat to the rear as well as the front. I plan to leave about 2" around the lights with no insulation but I am concerned that when have the roof skin on that this heat could be a problem in such a small area as there is no place for the heat to vent or disapate. Is this, or is it not, something to be concerned about? It feels hot to me but maybe it's not hot enough to cause a fire or other problem. I don't know.

I saw in another thread that there are LED replacements for some incandecent bulbs. Does anyone know of a LED replacement for an 1139 bulb?

[goldcoop]

Tripmaker-

Heat generated is a real worry!

How about making a separate small enclosure with vents. basically making a surface mount light?

Then you can fully insulate the roof and just drop wires thru the ceiling to the enclosed light box...

Also if you wanna change the light at some point you wont have a hole in your ceiling!

Cheers,

Coop

[Kurt (Indiana)]

http://www.tjtrailers.com/store/product5877.html

The above web site has lots of different wattage bulbs to offer. If the heat is too high, maybe a lower wattage bulb would be better. Seems like the #1139 has the same post as come of the smaller bulbs and would be enough light to read with. I know I put lowwer wattage bulbs in mine simply because they were way too bright. I was using two #1156 bulbs and switched to (orange) bulbs. I don't know the number, but they are much better than the real bright ones. There is plenty of light for reading with the smaller wattage.

[Tripmaker]

I already have them installed. They are located in the front wall about 24" up from the floor, above where our heads will be when lying down.

I know others have used these lights. What have you all done about heat? If anything.

[Tripmaker]

Hey Kurt, how's it going?

The link you posted has the 1139 like I have, it's a 12 watt bulb. Do you know if there a designation for the base so I can match it with a lower wattage bulb or perhaps an LED? I know what you mean about brightness, once the eyes get used to lower light levels it doesn't take much to see.

I read that you organized a TD meet last spring at Spring Mill. Any plans to have one in 2007? I should be ready for a shakedown cruise.

Jim

[Kurt (Indiana)]

Jim, No formal plans yet but keep your eye on the "Midwest" gatherings.

The #1139 looks like Fig. "F" in the pictures. If Fig. "C" is the same base then #89 might be better for less light and heat.

BTW, You're on the mailing list for the Midwest Gatherings so you'll be kept up to date as plans develop.

[Sonetpro]

I thought about the heat also. I didn't put insulation where they mount. You can see in the pic where I put a backing plate to mount them to, Without insulation. I also bought a light with a high and low.

[bledsoe3]

I built mine out using matching wood from my cabinets.

[Tripmaker]

Sonetpro...that's what I planned to do but is the heat traped in there a problem?

bledsoe...that looks good but isn't the heat still trapped behind the lights? Maybe what seems hot to me by touch isn't enough to worry about.

Kurt... I will try a smaller bulb to see if that helps. Thanks for putting me on the mailing list. I'm looking foward to a TD meet.

Jim

[Podunkfla]

I saw in another thread that there are LED replacements for some incandecent bulbs. Does anyone know of a LED replacement for an 1139 bulb?

I have some I got from CustomDynamics.com that are very high quality and bright. The mostly market to the motorcycle market (?) but, I have them in my PU taillights & signals too.

http://www.customdynamics.com/motorcycle_led_bulbs.htm

[bdosborn]

Here's a replacement lamp that might work

You can get it here.
Its designed as a replacement for incandescent lamps in RV lights.
Bruce

[Laredo]

"Backplate" them with reflective material, then cover that with a fabric grille. If you want to get fancy, you can put a tiny little computer fan (Ice Chip) behind the grille as well.

[ARKPAT]

I know they are not cheap but retro - fit a fixture you can try the C. Craine L.E.D.s bulbs.



There are several other L.E.D. replacement lights that are mentioned elsewhere in the forum. Check Here in the listing at the top of this page.



Pat

[coreyjhen]

Here's a direct replacement: http://www.ledtronics.com/ds/B606/
You probably want either the 3000K or 8000K, which are the equivalent of a normal 120V cool white or standard bulb, respectively.

[bdosborn]

Here's a direct replacement: http://www.ledtronics.com/ds/B606/
You probably want either the 3000K or 8000K, which are the equivalent of a normal 120V cool white or standard bulb, respectively.

8000K is fairly blue and 3000k is yellowish. For comparison, a cool white fluorescent is 4100K and a warm white is 3500K. I have both colors of LEDs and greatly prefer the 3000K.
Bruce