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The thing I see missing in the brochure is the concern over freeze up. LED's do provide a little heat, but of course traditional halogen bulbs waste a ton of heat, so the lamps never frost over. I have heard this as an argument against use of led lamps on locomotives. It would have been nice if it was addressed head on.
@jhz563 posted:The thing I see missing in the brochure is the concern over freeze up. LED's do provide a little heat, but of course traditional halogen bulbs waste a ton of heat, so the lamps never frost over. I have heard this as an argument against use of led lamps on locomotives. It would have been nice if it was addressed head on.
Our city converted traffic signals to LEDs and in winter some snow storms pack snow into the lens so you can't see what lamp is lit.
I would guess that the RR would need to come up with a way to warm the lens cover (use the same thing as auto rear window defoggers with the embedded heat lines?) when temperature drops below a certain point.
LED headlights are not that new. I installed them in our motor home several years ago. They are vastly superior to the halogen projector lamps they replaced, and use 15% of the power the old lamps used.
LED lights are so much more energy efficient it's just ridiculous. Almost every company I have worked for in the last 10 years plus our church has done a complete LED conversion as the cost benefit is that good. Not only do you not replace them near as often, per Rich's comments the use about 15% or less the energy, produce much less heat (heat=wasted energy), and provide more consistent and controllable lighting.
In hotter areas of the country traditional lighting adds quite a bit to the cooling efforts of HVAC systems. This increases cost and wear on these systems.
In automobiles and then trains, LED's can create much less strain on the vehicles systems as well. You can leave even LED headlights on all night and wouldn't run your battery down as with traditional and even more modern halogen lights.