Led Bulbs, the next step in lighting

February 17, 2007 § 4 Comments

Led Bulbs, energy efficient lighting

Leds will be our future light-sources, we only wait for some waaay cheaper ones

Incandescent light bulbs have a relatively poor luminous efficacy and therefore are gradually being replaced in many applications by different lighting technologies like fluorescent lights, high-intensity discharge lamps, LEDs, and other devices. The thing that caught my attention to LED bulbs is their efficiency and long life, that makes them very attractive despite their high costs. LED (light-emitting diode) is a semiconductor device that emits incoherent narrow-spectrum light when electrically biased in the forward direction. This effect is a form of electroluminescence(source).LED bulb

This 150 LEDs in this light bulb use 9W of electricity power , costs about 65$ and emits as much light as an incandescent light bulb of 70W power. People debateon the comparison between LED bulbs and fluorescent lights especially on the quantity of light they offer. This is new tech and prices drop as performance is improved and my opinion is that LEDs win hands down only considering their life of 30000 to 50000 hours comparing to 8000 hours of fluorescent lamps. One could say that the four times longer life of LED bulbs than fluorescent lights isn’t worth it the more than ten times the price but there are other issues also. It’s known that compact fluorescents are made with mercury and all fluorescent lights are said to be emitting harmful radiation that can endanger one’s health. I didn’t calculate anything but if the LED bulb consumes 2-3W of energy less than the fluorescent lamp when you think of the extra 20-40000 hours of life it probably gets you cheaper with LEDs overall.

And, like someone on the engadget.com forum said, “But even if you are not saving your wallet, you are saving the planet… and that’s cool, isn’t it?”

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§ 4 Responses to Led Bulbs, the next step in lighting

  • […] rumor on the price but as experience shows (the LED bulb I’ve talked in the previous article was 65$), it is going to be wallet-burning. I am sure though that as global warming heats up on the […]

  • […] Everybody desires LEDs in his home. But not everybody affords LEDs. I have talked about LEDs with a couple of other ocasions and this news is certainly worth mentioning. British scientists led by Colin […]

  • I think the right way is not to try to simulate the original bulbs using LED, perhaps this can be
    right only for the phase of “transition”.
    You can also design LED lamps, working from the beginning to use the light source LED, getting the best.
    We are working at this theme for a couple of years, take a look at:

    • realthor says:

      Hi Valerio and welcome on perfectcube. I think that LEDs can be used in more forms than the current bulb-style but also one must think of the countless light fixtures already existing and green warriors know that reusing is better than making new. In the same time LEDs are focused light and LED bulbs try to simulate the “omni” of traditional ones.

      On the other hand, as one might need a new lamp standardization must be taken into account…what kind of LED fixtures work with that lamp, how many manufacturers provide that kind of fixture and so on. Because nobody wants to turn a lamp into a single-use object.

      Otherwise I love the stuff on your website, especially the Pulsar street solar lamp. Can you tell me more about what kind of LED fixture are you using in those lamps? How do they look like. Can anybody that buys a lamp from you find replacements easily or they can be ordered from you only. Thanks.

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