If they can reach this kind of temperature for an output of 240 lumens I think it’s little to get excited about, also I cannot see a price in the link.
The problem here is obvious, its attempting to get too much power from too small a lamp, hence a small surface area inadequate for dissipating the heat produced.
If you want super power, you have to have big lamps, but not necessarily heavy ones.
Lamps based on Oldham conversions from Miles Moulding or me seem to do better.
My little worklamp already has orders without even advertising them at £50 for a conversion of an existing lamp. I am awaiting parts from HK for this production run and also to experiment with some new designs. My superlamp continues to impress everyone and underground does not even get noticably warm, despite using full power for extended periods.
I was in Maen Offeren on Saturday and could illuminate all the way down the big incline at the back of the mine, the one by the fan, and ran for the whole trip on 1 power pack although I had a spare in my pocket.
Hope you are well Roy M, I will not be down to Cornwall until Spring Bank holiday unfortunately, but look forward to showing you my lamps.
My avatar is a poor likeness.