Yeah, light emitting diodes don’t work like traditional incandescents. I suppose you could say that a filament bulb is a controlled fire, at the most simplistic and basic level, but that’s a misrepresentation of what’s really happening. The filament heats up to a very high temperature, causing it to glow and emit light. This process is known as incandescence, and it involves heating a material until it emits light, rather than burning or combustion, which would involve a chemical reaction with oxygen to produce fire. The bulb is filled with an inert gas or a vacuum to prevent the filament from burning up due to oxidation.