Except for very special cases, LED bulbs can be used in all applications. The principal concern would no longer be performance but bulb aesthetics and size – LED bulbs in particular tend to be longer than incandescent ones- but engineering is improving quite rapidly. Where there was doubt before that LED s could provide the full warm effect of an incandescent in special applications – restaurants etc, the new Filament-style LED bulbs are now the answer- mimicking incandescent bulb output in every aspect.