LEDs are awesome. They are far more efficient than traditional lighting technologies, where a lot of energy inputs are wasted as unwanted heats. But could LEDs be TOO good at being efficient, that it would actually be to their detriment? Take a look at the picture below: Frozen LED signal lights. Traditional street lights are approximately 175W each, while typical LED signal lights are 15W to25W each.
Could always put a temporary heating element…heck maybe even a 10W wire wound resistor, when it gets below freezing have a relay just push some power thru it and melt away the ice