I have noticed that LED fixtures are much cooler than the the standard lights they replaced. At my work, we replaced a bunch of spotlights that are pointed at pictures. The old lamps where about 50 watts, while 13 watt LED's replaced them. Before we had problems with the ceramic base cracking and becoming brittle. While the fixture was rated to run 200F, they where really hot before making the change. We also got a rebate to help pay for the new LED bulbs, but the 37 watts per fixture X 8700 hours a year they stayed on saved enough to cover their costs too! It is in a retirement center, so we never shut off these light at night, and yes they run all day too.
Fred.