CBS News - Pharox Led Lamp 4 W replaces 40 W

Pharox Led Lamp 4 W replaces a 40 W lamp.

www.ecoled.se for more info and order.

4Watt bulbs will take over traditional lighting.

Category:

News & Politics

Tags:

• led
• lamp
• pharox
• e27
• ecoled

[RoteKampfSocke]

edison didn't invent the lightbulb ...

[47f0]

1) They say the bulbs are $59. That is not currently true - upscalelighting (dot) com has them for $39.

2) They really should have done an energy savings comparison - yeah, at $39 the bulbs are pricey up front, but over their lifespan, they're quite cheap.

[H1RNR1SS]

In 2008 I bought 2 of those LED bulbs (35,- € each). It was a big disappointment. It is NOT comparable to a 40W incandescent, instead is on the brightness level of 25W incand. The light color is cold and greenish (very noticable in the video above). And the not-so-impressive brightness decreased over time. After only 1,5 years (about 4000-5000 hours) the lamp only glimmed when switched on.

Lemnis Lighting was one of the pioneers in providing LED bulbs, but they didn't keep, what they promised.

[order9066]

@RoteKampfSocke Agreed. It's more accurate to say he made the lightbulb commercially viable. All the european lightbulbs created before Edison's burned-out after a few hours.

[Mooshta]

There is one point of comparison between halogen and LED that is a bit of a sticking point - and that is total lumen output. Research has shown that an LED bulb can have a similar beam angle (FWHM - full width at half maximum), similar CBCP (center beam candlepower), yet lower total lumens than a halogen lamp. This is due to the fact that many traditional lamps emit significant amounts of light backwards, which, in many cases does nothing for the application.

Currently $29.96 @ kuuala (dot) com

[Mooshta]

There is one point of comparison between halogen and LED that is a bit of a sticking point - and that is total lumen output. Research has shown that an LED bulb can have a similar beam angle (FWHM - full width at half maximum), similar CBCP (center beam candlepower), yet lower total lumens than a halogen lamp. This is due to the fact that many traditional lamps emit significant amounts of light backwards, which, in many cases does nothing for the application.

Currently $29.96 @ kuuala (dot) com

[Coiltec]

LEDs have one huge problem: The efficiency decreases when the LED gets hot, and above ~125 degrees Celsius ist gets destroyed.

So the LEDs must be cooled. And it isn't that easy to build a (for example) 10 watt LED lamp in the shape and size of a normal light bulb, because the cooling is a big problem.

This is also the reason why most manufacturers use for example 100 tiny LEDs instead of 3 high-power LEDs: The 100 tiny LEDs are easier to cool.

But LEDs are the future of light, I think!

[KB3MMX]

LED's are the future of lighting !!!

[744682532]

Why can't they just increase the size of the LED bulb?

[hawkermustang]

The Hawker 900 xp. business jet now uses led landing and taxi lights and they are very bright. They are brighter than the incandescent and Hid bulbs they replaced and put out much less heat. The incandescent bulbs would put out so much heat that they melted the landing lenses if you did not turn them off right away.