LEDs generate less heat than incandescents, for sure, but they do not generate zero heat. If you bundle them up in an insulting blanket, the heat build up will be slower, but over the course of a day's travel, I'm not sure I would want to trust the fixture to remain cool.
I don't know when (or if) TM started using LED lamps in this fixture. I also don't know what year TM the OP has.
The heavy weight on the switch is a good idea.
Bill
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