Will LED be the future of lightings? How long it will be?

No they will discover incandescent lighting very soon.

Not much longer!

Aircraft already have it. Boeing is going big in that direction. It saves money. They are used inside the cabin and on the exterior safety lights.

The cost of LED is still a little high, but is coming down on the curve. You already have flashlights and specialty lamps.

It all boils down to cost. When the cost drops to a level that is closer to traditional bulbs there will be a migration towards LED due to savings.

However, consumers tend to like instant gratification, so the cost savings need to be more immediate than what industry looks for. If something pays for itself in a year, industry perks up. Consumers tend to yawn, but the tide is changing as entry cost drops.

LED bulbs are available now. They are expensive, though.

HI, can anyone tell me where LED's for mains lighting are available?

I ordered some from USA about 2 years ago when they were advertised but am still waiting.

Here in Australia we run on 230 V AC and I have not yet found any LED lights that can do so without a transformer or other large and wasteful electronics.

Yes it is true that the government has phased out the sale of incandescant light globes from 2010 (I think that is the right year).

Any help would be appreciated.

Cheers

BigBirdAustralia

220-230V AC, no any wasteful electronnics, just like one traditional halogen bulbs.

You just screw it into the plug, it wil work.

The transformer designed inside, user can not see it.

visit ELECOSN.COM for details, you will see more...

We are at 85 lumens per watt,,,should be at 150 by the end of next year...

check out OceanLED.com

Just go to IKEA.

Part of the UK's current Building Regulations for new and extended dwellings requires that a percentage (25%?) of lamps in new buildings are required to be other than incandescent.

A building extension at these co-ordinates during 2006 achieved 'all-except-one'.

Canada is on board with the Aussies on this one, and incandescants will be not be available for sale by 2012.

You can buy LED lighting fixtures in the US now but they are a bit spendy.

I made my own LED fixtures for my kitchen. I used the Phillips Luxeon products. I paid $2.00 each for the high power emitters.

Go here for their newest: http://www.future-mag.com/0705/070500.asp.

This is an excellent DIY site that has on line calculators, go to the LED discussions. http://forums.linear1.org/index.php?PHPSESSID=3c73860bc1243e017330c3bcdff74143&board=2.0

Note: A common misconception is that LED's do not produce significant heat. That's mostly because our experience has been with the emitters used as indicators for electronic devices. Heat dissipation is a primary concern for the high power emitters and they will melt if the fixture is not properly designed.

Yes the bigger and more powerful versions require special cooling as led's get to a higher power in wattage they to become very wasteful of energy. They will discover that there is no magic built here every sort of lighting has its down side. Incandescent lighting has seen us through the last hundred years so why now abandon a good well known technology for less reliable ways. Also the new forms of lighting are far more polluting to produce and dispose of. You will have to have an individual hazardous waste disposals licence; are now we have it revenue raising technology. Some one put that light out.

I began researching LED's for task and ambient lighting because of their long life. I have a kitchen with 6 compact under cabinet fluorescents and 12 rail mount halogen spots. I got tired of the cost and hassle of replacing them. Efficiency was secondary.

Actually, LED's are much more efficient than incandescent lamps but it gets difficult to compare them. Sorting out the various claims and data is difficult. LED's used for "task" or "work" illumination, basically spots, beat about anything except fluorescents. And LED's are close to compact fluorescents, like hooded desk lamps. The newest LED's are claiming efficiencies approaching fluorescents but I do not have any knowledge or experience with them.

LED's have a narrow output angle and if properly designed for the task at hand, most of the light is on the target. Standard "bulb" incandescents radiate light spherically. Halogen's are 15-20 % more efficient than "bulbs' but still have large reflector losses (heat) for task lighting. Much of the energy used by incandescents is wasted because they radiate wavelengths outside of the visible spectrum. More of the energy used by LED's is in the useful wavelengths. LED's would not however be a good choice for general room lighting though.

One LED, 650 mA rated current, 3 volt forward voltage, draws 650 mA from a 3 volt power source. But 8 of the same, in series with a 24 volt power supply, draws the same 650 mA total current, 1250 lumen's total. You can get a lot of light from a low voltage circuit. Compare that to a single 70 watt 110 volt bulb (800 lumen's) at the same approximate amperage.

Please do not correct my figures as I do not have any confidence in them either. I am often wrong. I did the LED's because it was cheap, fun and I haven't replaced any after one year.

See here: www.elecosn.com

Here are dimmable LED Bulb, and LED incandescent bulb

Just to clarify some facts on this matter.

Announced by our Federal Environment Minister Malcolm Turnbull on the 20^th of February, 2007. " From 2010 incandescent light bulbs will no longer be available for purchase as they will not meet our new energy standards
One of the replacements for the incandescent light bulb will be the already available compact fluorescent light bulb.

The Federal Government phasing out incandescent light bulbs will reduce greenhouse gases by up to 800,000 tonnes a year."

The technology and avaibility for LED's is still a bit slow for general House lighting except for the mega rich. Most LED lighting is used in speciality lighting (such as in the back yard) or Torches.

Maybe in another 5-10 years LED will be the GO but we need to take steps immediatly so CFL's are the current answer.

What is the cost of a 50W LED Bulb in Austrilia?