zlacker

It's 60k lumens now, and it draws 580W off the wall

>>sberen+(OP)
Whats the expected life for the leds at that power draw level?

>>christ+S
LEDs are pretty insane these days - the ones we use have an L90 (time until they hit 90% brightness) of >50,000 hours (17 years if you use it every day 8 hours a day).

>>sberen+(OP)
Am I right in thinking you're dissipating that 580W using passive cooling only?

Impressive if so - every time I've designed something approaching that power level I've ended up needing forced air cooling.

>>michae+t8
> Q: Does it get hot/how is it cooled?

> A: It's cooled through our large heatsink and ultra quiet Noctua fan. The fan only turns on above 75% brightness. At max power, the heatsink is cool enough to put your hands on it for a couple of seconds.

>>geneze+Pe
CENELEC Guide 29, referenced in EU harmonized standards sets burn thresholds:

For brief contact (e.g., 1-3 seconds on adult-accessible parts), temperatures should stay below ~48-55°C depending on material; longer reflexive contact requires even lower limits (e.g., 43°C for extended exposure). A surface hot enough that hands can only tolerate it for "a couple of seconds" implies it's above this (likely 60°C+), risking second-degree burns.

I practice this means this product would not be allowed to be sold in EU. This would have been thoroughly tested to get the CE mark.

> All LED lights sold in Europe must carry the CE mark

https://wwbridge-cert.com/blog/posts/is-ce-marking-for-led-l...

>>Y-bar+sO2
Well, at no point do they talk about any kind of certification so my guess is they just didn't care/know/worry about it. So, yes, it's probably not legal to sell this in many places -not just EU-.

>>sberen+b4
How does the operating temperature of the LEDs affect your projected L90 time?

>>Y-bar+sO2
Honestly, this lamp seems very dangerous just because of this. You'd have to warn guests not to trip and fall onto it, and keep kids away from it.