LED Lighting Fixtures

leds are more efficient, longer lasting, but more expensive than the others you mention. There are not many choices in high power uses, to match sodium etc.

this is a good source to start

Look in http://www.ledsmagazine.com/main

http://www.ledsmagazine.com/press/19786

http://www.ledsmagazine.com/Outdoor

As aurizon said, there aren't a whole lot of choices yet, but I have replaced my outdoor spotlights with LED ones from Costco, and am quite happy with them. The originals were a little brighter, but they were 75 and 150 Watt. The LED replacements are 3.5 and 5 Watt. That's a pretty significant savings in energy!

I had a Compact Fluorescent in the work lamp of my milling machine. It broke, so I replaced it with one of the 3.5 Watt LEDs, and I like it a lot! Theoretically, the LED lamps should withstand a lot more vibration than incandescents or CFs.

You may have noticed that there are quite a few individual or groups of LED's that have failed in traffic lights. I took one of those failed units apart, and all the LEDs were good; it was the solder joints between the board and the LEDs that had failed. I suspect that relates to the removal of lead from solders - it takes more skill and technology to make good permanent joints with lead-free solder. Presumably as time goes on, these will become more reliable...

That magazine is filled with adverts, and each one has a web site, so you can go far within their pages.

Thanks for your input. It appears to me that this technology is in an infant state. My job is to report to the military as if this is feasible. At this point it seems that certain applications are, e.g., replacing fluorescent lights (in place). Insofar as HPS, etc. it may not be cost effective; maybe stay with what they have. In any case, I will research it more but I think I know the answer.

Thanks buddy,
Jim

Wait, for the military, the reliability of solid state led lights, as well as their shock proof nature, as well as their lack of RF radiations are strong positives. They also emit a pure light and you can buy infra red ones for night vision applications. In addition, their heat signature is very low.

Filament lights are fragile, emite lots of Infra red and heat up their housing, which stays hot after they are shut down, so they are very visible to night vision goggles well after they have been shut down. Fluorescent lights are also fragile, and their plasma emits RF, so they needs to be RF shielded or they can be heard on sensitive receivers.

So the military is not sensitive to the cost of LED lights, and they will appreciate their good points

I met with the regional sales manager for Pauluhn Lighting and they do make them! However, it appears to me that they are not quite up to par as an equal in terms of illumination but the Naval Sealift Command thinks they are. I did found out that they now make high bay fluorescent fixtures!

Thanks for the input

I have in stock, a 100 watt High Bay LED light fixture, 120v,

also a 50,70 watt High Bay LED Light fixture that run on 12vdc.

The are very bright for and LED type fixture..

Tonight, I will run my photometrics.

Donald

"I have in stock, a 100 watt High Bay LED light fixture, 120v"

That is an LED unit that uses 100W of power, not an LED unit that is intended to replace a 100W incandescent, correct?

I would check out the web site www.superbrightleds.com for LED lighting.

All my bike lights are LED units, but my one foray into LED home lighting is replacing my most inaccessible 12V downlight with a triple luxeon star unit. The light is pleasant, slightly less bright than the 50W unit it replaced, but it cost me about ten times the price of a halogen bulb. At 50 watts I will never recoup that cost on my power bill, but I will probably never have to replace it either.

with a properly designed LED fixture, why include a socket?

you will never neer to replace it. Of course, that means proper circuit and heat sink design to prevent cookout failures and transient failures.

We would be happy to quote any item pertaining to LED product.

Donald

Send me brochure, web site, etc. at jim@seaboardcontrols.com. We're only quoting two phases and engineering/specs are part. Bare in mind, this is military.

Thanks,

Please provide the MIL-SPEC quotation reference. Also any detailed specs they must conform to. Consumer devices will probably not qualify

Hey Jim, I will do that...

I guess it's true, maybe the USA has more rules as to buying products, and that's good because then quality control specs can be written to accomodate them.

In Canada, we are selling the Mounties our little LED Stick Lights, they love em OOPS forgot no commercials here..

Donald

I have used LED lighting for microscope lights. The give a nice white / blue light. Down side of LED lights are that most are connected in groups of 3. Kinda like the old Christmas tree lights. When 1 goes out you lose 3.

Most solder joint failures are do to poor / low cost workmanship done offshore.

Here's a Site of interest with low cost bulbs: http://www.ledshoppe.com/Product/hou/HE1033.htm

From Hong Kong.

Live and learn, the way I did..

http://www.ledshoppe.com/Product/hou/HE1033.htm

this place is a trader,,buying from those low cost workers on the mainland, and BTW, this is OLD style 5mm LED.. Not Bright at all..

The new styles of LED are in Televisions, and

like the 3 watt 5000K downlights used in the

forensics lab at the R.C M.P. in Canada

Also like the 100 watt, 5000K single Chip LED DownLight.. ordered for their Crime Scene forensic team confinement tent,

or the new style personal stick lights that the Tactical Strike team is using in their helicopters to keep the operation covert..

LED'S are here to stay, and as demand increases, the price will decrease.. All this hype about saving a little energy with poison mercury CFL, and T5 fluorescents, shame on all of us for filling our streams, lakes, and oceans with deadly mercury..

guess who

Thank all of you for your useful input. To be quite clear, system lighting voltage will be 115 vac and 220 vac (no d.c. stuff) I received some samples that were quite cute for maybe pleasure craft. These are ships, onsight power and treated accordingly. These projects will require necessay photmetric attention and comparison with what they have to determine the ROI.

Thanks for your help!

Jim