Hey Aidan, this has also been a concern of mine, although my OBS is not remote, so when it gets really hot I just open the door and get a draft going. My shed is dark blue, so it gets really hot during summer, to the point where my mount would get very hot to touch. I never had any problems with equipment failing due to it though. Overnight condensation was also a problem.
I installed an extraction fan and venting close to the cieling, which didn't really make a difference!
I'm considering something like this:
http://www.ebay.com.au/itm/Roof-Vent...item4615e165ae
It's a bit pricey, I recall seeing one for around $400, but can't find it?
I'm also interested in others input.
Erik