Eternaleds debuts world's first liquid-cooled LED light bulb
By Darren Murph 
posted July 15th 2009 7:17PM
posted July 15th 2009 7:17PM
We know you probably wouldn't answer "What's the perfect companion to a liquid-cooled PC?" with "a liquid-cooled light bulb," but amazingly enough, that's a viable answer starting today. Eternaleds is stepping up big with planet's first liquid-cooled LED bulb, the HydraLux-4, which will arrive in warm white and daylight white and should save you bundles on your energy bill over the next score. The company asserts that these bulbs produce "360 degree lighting" and can emit the same amount of illumination as a 25W incandescent with just 4W of energy. Each bulb is rated for 35,000 hours of use, and considering that a single one costs only $1.75 per year to run (at eight hours per day), we suppose the stiff $34.99 sticker is somewhat warranted.
I wonder will this type of light blub cause headaches like the new energy saving ones?
looks cool enough.
For those that still don't get it...LEDs do get really hot. They generally require large heat sinks to operate efficiently or at all. The main difference between an LED and other types of bulbs, they don't throw the heat with the light beam. Where you can feel the heat a half a foot away from an incandescent bulb, that's not the case with an LED...but the majority of the heat stays near the circuit board and must be dissipated.
Keep in mind we're also talking high wattage LEDs...not the little piss-ants on development boards and stuff like that.
Yep. I have 5w LEDs for my car's license plate and I had to get a resistor to tone down the current. That little resistor can melt plastic it gets so hot. People have used LEDs as city lights (small bulbs in headlights used in Europe) and the little 5w LEDs were so hot, they melted the headlight housing.
Those little buggers get real hot and fast.
First they make 'em look like jet engines, now they liquid cool 'em? Damn, these hi-tech LED bulb things are getting cool!
...er, figuratively speaking as well as literally.
In my profession i usually fill em with nitroglycerine.
wake me when I see one selling in the local hardware store and can reach 100W+ equivalent light output and doesn't come with (heavy?) oil so it can be used in those flexible arm desklamps without fear of an oil slick and call to Greenpeace (ugh) to put things right :)
I think I'll wait a year or two for the manufacturing to allow a cheaper product. Very 'cool' though.
For ambient lighting applications - LED's are dumb.
http://geekpi.com/?p=535
Lumens per watt people - lumens per watt.
LED bulbs run much cooler than an incandescent and typically feel warm to the touch but not hot.
LED bulbs can't take the heat and typically need a heat sink of some sort.
The liquid cooling for this new bulb keeps the bulb from failing prematurely.
I've seen this at light fairs; but i think it's from another company~
I have exactly those lightbulps since months in use at home. How can they be "worlds first" ??? i bought them on www.pearl.de, where they're available since months.
it's even a real shop, not just an online-shop.
i have my whole appartment just led lightbulps (but not just those). they where expensive, but i love the light of them. and they have a geekfactor, and a "i save the world"-factor. so, it's worth it :)
Only 4 years of continuous light. I hear that a light bulb in it's 108th year of illumination at some Fire Station in Livermore.
That's because that light bulb is much closer to the original design. It was created with a filament about as thick as a normal shoelace (well, maybe not that thick, but you get the idea). Many modern incandescent light bulbs die because the filament breaks from the heating and cooling, whereas this antique's filament can withstand the temperature changes due to it's thickness (and possibly the material it's made of as well).
And how many 25 watt bulbs do YOU have in your house?
None, because the only thing worse than sitting in the dark is paying to run a 25 watt bulb and sitting in the almost dark?
Chances that people will queue up to buy these things? Waaay to high.
Incidently, what is the total cost of ownership of a series of 25 watt bulbs to last 35,000 hours? Bulbs and energy that is - and why does no one ever actually provide that stat when trying to sell you a lightbulb that costs 144x times what an incandescent costs?
CFLs do not provide the same type of light output as incandescent lamps. They take sometimes up to two minutes to reach full brightness, and by then, you've left the room and cleared off. The fuill brightness is a problem, too, and especially why all the old folks I know dislike them. It only annoys people that buy them and find that the claims don't hold up in practice! The PR spin is now caught out.
As to the LEDs, well, we need to find a solution that will be cost-effective to produce, be practical, and be affordable. It's as simple as that.
The reason why governments are so keen for us to switch over is because of the huge energy saving over the whole country. It's not our measly few dollars a year in our own pockets. There's no doubt that if everybody switched to lower energy lamps, whetever the technology, it's save quite a lot of energy.
I'm looking forward to getting decent LED tehnology, however, it'll be a little while yet. That 25 watt (equivalent) LED lamp is not going to do it for me.
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