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Inside the New LED Retrofit Bulbs
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Inside the New LED Retrofit Bulbs
第一批60瓦白炽灯泡的LED替代品现在出现在美国各地的商店货架上。虽然目前美国法律将淘汰100瓦白炽灯泡的2012，就可以很容易地找到其他–15， 25， 40瓦白炽灯泡的替代品，60，和75。LED灯泡的初始成本比较高，但随着时间的延长和节能，它们的价格比自己还高。
LED灯泡已经收到了最多的关注，到目前为止是12e26a60 AmbientLED模型，12.5 W，800 W白炽灯泡更换为60流明的飞利浦照明（图1）。它与美国能源部首个光明明天照明比赛获得的灯泡相似，也就是L奖。它还宣称在CFL和LED灯泡的佼佼者在消费者报告杂志进行了灯、吸顶灯试验。
Figure 1： Philips Lighting’s 800-lm， 12.5-W AmbientLED （left） is a replacement for 60 W incandescent bulbs. The LED bulb is similar to the Philips bulb （center） that won the first Bright Tomorrow Lighting， or L Prize， competition from the U.S. Department of Energy， but the latter has four lighting segments while the former has three. In 2012， Philips’ will begin selling the bulb at left， which includes features from both the current and L Prize bulbs. （Courtesy of Philips Lighting）。
At first glance， these yellow-orange-colored bulbs do not look like they would produce the 2，700 K warm-white light we’ve come to expect from a typical household incandescent bulb. That’s because the LED bulb’s outer plastic surface has a remote-phosphor coating on its inside， which is actually key to its performance. The phosphor efficiently converts the light of high-efficacy blue LEDs into warm-white light while simultaneously making the lighting even across the surface.
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