Super small fan for LS cooling?

[LED_ASAP]

Has anybody seen this?

 

[ledy]

will I have this in my modded Myo5 /ubbthreads/images/graemlins/smile.gif hehe.

 

[Lynx_Arc]

someone will figure out a way to make an aluminum light with tubes in it for liquid cooling luxeons.

 

[Quazar]

A peltier heat pump would be a better option. No moving parts to worry about.

 

[markdi]

there was a long thread(long ago) about using a peltier heat pump for cooling high power leds
it was deemed impratical.
You still have to move the heat away from the hot side of the peltier device.
the small fan is interesting I want a couple of them.

 

[Wolfen]

LED technology will have moved on by the time mini fans are embeded in our lights. ( Hopefully anyway!:)

 

[Deleted member 684]

Woah... 3.3 volts @ 20ma.... it sounds like a good trade off... It's only taking the power of 1 5mm nichia LED driven at spec!!!

 

[Lynx_Arc]

how about a small water pump and a light with veins in it throughout the body to faster circulate the heat away, or even better get a cpu water cooler for your light and run the hoses to a radiator with a fan on a helmet on top of your head. LOLOL
/ubbthreads/images/graemlins/crackup.gif

 

[idleprocess]

Passive liquid cooling would be interesting, but I don't know if it would be effective compared to more heatsinking mass.

Active cooling for LEDs cuts into your lighting efficiency big-time if you start counting the power going into fans, peltier coolers, pumps, etc.

 

[evan9162]

[ QUOTE ]
Quazar said:
A peltier heat pump would be a better option. No moving parts to worry about.

[/ QUOTE ]

It's going to cost you 10X the power of the LED just to pump the heat from the LED and maintain a reasonable delta-T.

 

[RussH]

I think I'll borrow a couple of those blood test needles from my doc & hook directly into my blood stream. It's already got a cooling setup although it's a little warm at 98.6 deg. F. Now, where can I find a little radiator to attach to the luxeon.....

 

[Prototype3a]

Anyone here ever hear of heatpipes ? I believe three heatpipes running parallel to the battery compartment would do quite well. /ubbthreads/images/graemlins/happy14.gif

 

[evanlocc]

Well i think someone gona invent a chip size "Heat2Current" converter.

Then the heat sink topic will solve forever!

/ubbthreads/images/graemlins/happy14.gif/ubbthreads/images/graemlins/happy14.gif/ubbthreads/images/graemlins/happy14.gif/ubbthreads/images/graemlins/happy14.gif/ubbthreads/images/graemlins/happy14.gif/ubbthreads/images/graemlins/happy14.gif

 

[SKYWLKR]

Heat Pipes would do it... actualy one heat pipe would do it. they are sick efficent.

I have a new Heat sink on my P4 that can disipate 100 watts of heat with 3 pipes.

only down side is the heat pipe only MOVES heat it cant get rid of it with out sinking but moving the heat to the body of the light it'll sink to your hand.

 

[brightnorm]

LEDs get more efficient, more light/less heat, 1W = today's 5W, cooling becomes a non-issue.




But, just in case.....

Brightnorm

 

[socom1970]

Encapsulate the LED's in liquid Nitrogen to keep the heat down. no moving parts there, either. No heat problems, then.

 

[idleprocess]

That would violate engineering economy big-time - just like most other active cooling schemes.

 

[cobb]

Those thermal electric heat pumps require a lot of cooling and power. I favor the fan idea and the heat tubes.

 

[Tentou]

One word:

FINS.

You need 3 square meters of aluminum cooling fins that jut out of the front that the heatpipes can run across to radiate heat to the atmosphere.

It'll look cool, too. Like a 1950's Sci-Fi laser gun.

 

[illumiGeek]

Small fans like those don't move enough air to be useful. I have some tiny fans from Sunon and Elina and they are pathetic.