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Lighting is hot. I'd love to have lights that weren't also little heaters. Or, if the cooling effect is big enough - imagine solid state cooling on devices. Who needs a fan when you can have a little cooling light?

I doubt that they'll be able to scale this up too much though, since it probably relies on an effect that only occurs below a certain threshold.

Most LEDs don't heat up that much... they're usually cool to the touch.

I'd love a computer that glows brighter to release heat when it gets too hot, though :-)

I am sorry that I cannot elaborate more on that for now(4am) but the cooling effects of light are known for quite some time already. Please check laser cooling as a keyphrase.

Data centers.

you apparently never were on a stage, bring illuminated by giant lights. it often is uncomfortably hot. this is also a problem in video recording.

And this would make it worse. It cools the lamp by sending the heat outward in the form of light. It does not cool the recipient in any way, in fact it requires that the recipient already be cooler than where the lamp is.

oops, my bad. I thought I understood it from the comments here and did not read the article.