Swoboda says Cree introduced the first lighting class LEDs two years ago, then, “It took two years to get a reasonable number of their products into the market so you could go out and buy them.” Now, he says, the led high bay light advantages over both incandescent bulbs and fluorescent lighting are starting to pay off. He points out Incandescent bulbs are not at all efficient, they generate 95 percent heat and only 5 percent light, which is better than a gas lamp, but not efficient. A 12-watt LED is equivalent to a 65 watt incandescent bulb—an 85 percent energy savings.
On average in the United States, running a 65-watt light for 50,000 hours would cost $325 in electricity alone. Because the Cree LR6 LED uses only 12 watts, running the light for 50,000 hours will cost only $60 under the same scenario. And you would be changing incandescent bulbs in that period, because 50,000 hours is 50 times the life of a typical incandescent and five times that of a fluorescent lamp.The new LED lights also offer better color and half the energy use of fluorescent lighting, not to mention being much more environmentally friendly than fluorescents, which contain mercury. Swoboda admits it may take a while for consumers to adopt more expensive LED lighting, but larger government and business users see the value.
Cree recently announced two major government installations including an entire wing of the Pentagon. This isn’t something coming, it’s beginning now, Swoboda says, “with real products installed in real applications today. Anywhere you see a traditional light source, there is an opportunity for LED replacement. We should see the first LED automotive headlamps in a the next year or two. Manufacturers are already using them as accent lights and most interior lights are already LEDs. There’s also a big trend to use led high bay light in notebook computer screens. Apple Computer, for instance, recently said it will use LED backlighting exclusively as part of its green initiative.
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