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미국 조명과학그룹(Lighting Sciences Group)은 13일, 100만번째 LED전구 생산을 기념하는 자리에서 60와트 밝기의 백열등을 대체할 수 있는 LED 전구를 소개하고, 다음 달 중 30달러 미만에 판매할 것이라고 밝힘.
금년 초 Home Depot(가정용 건축자재 유통사)에서 40와트와 동급인 LED전구를 18달러 미만에 시판한 적이 있으나 지금까지 60와트급 전구가 매년 수억개씩 팔려나간 것을 생각하면 60와트 동급 LED의 파급효과가 더욱 클 것으로 전망됨. 조명과학그룹은 최신 A19 전구가 850루멘스(光束)이고, 소비전력 13와트, 사용시간 5만 시간(하루 6시간 사용 시, 23년) 등의 성능을 갖는다고 설명함. A19 제품은 내년 1월 후반 조명 유통 업자를 통해 판매할 예정이고, Home Depot 매장에서는 3월에 판매할 예정임. A19 LED 전구는 기존 백열전구와 같이 따뜻한 느낌의 노란색 빛 대신에 3,000 켈빈에서 백색광을 방출함
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[ LEDs keep coming: 60-watt stand-in priced at $30 ]
Lighting Sciences Group today introduced an LED bulb designed as a replacement for a 60-watt incandescent that will be available next month for under $30.
The company announced the bulb at a ceremony at its Satellite Beach, Fla., headquarters, where it manufactured its 1 millionth LED light with the familiar "A" shape of an incandescent bulb.
A 40-watt equivalent LED bulb has been available through Home Depot since earlier this year, priced just under $18. The 60-watt replacement category is more significant because it's one of the most popular for lightbulbs, with hundreds of millions sold every year.
Lighting Sciences said that its latest A19 bulb will give off 850 lumens and consume 13 watts, and that it will last 50,000 hours, or almost 23 years assuming 6 hours a day of use.
The A19 will be available under the Definity brand through lighting distributors in late January and be available in Home Depot stores in March, according to a representative from Lighting Sciences Group.
The light of the company's existing A19 bulb is a white light at 3000 Kelvin, rather than the warmer yellow light of incandescent bulbs.
Lighting manufacturers are embracing LED technology because it offers a good technical path for improving efficiency, even compared to compact florescent lights. Right now, LED bulbs are slightly more efficient than EnergyStar-certified CFLs when measured on lumens per watt. LEDs are projected to last many times longer than CLFs and don't contain mercury. Lighting Science Group said its LED bulbs can be recycled.
The light dispersal from Lighting Sciences 60-watt
equivalent LED, which consumes 13 watts.
(Credit: Lighting Sciences Group)
In terms of price, Lighting Sciences appears to be one of the most aggressive, and industry executives expect the price to decrease steadily over the next few years.
Philips started selling its Ambient A19 LED, which gives off 800 lumens of warm light, through Home Depot this month for $40. Osram Sylvania will start selling its 810-lumen LED bulb through Lowe's for just under $40.
General Electric earlier this month started selling a 40-watt equivalent online for $50. It is seeking to differentiate itself with a design that better disperses light, making it suitable for desk lamps and other applications that require even light distribution.
