Working principle of elevator arrival light

The luminous principle of incandescent lamp. According to relevant data, the working principle of elevator stop lamp is to use the luminous principle of incandescent lamp and the thermal effect of filament resistance current (electric energy is converted into heat energy) to make the filament temperature rise to the level of incandescent lamp and emit light (heat energy is converted into light energy). The traditional fluorescent lamp is lit by the high voltage released by the rectifier, but it can't be lit when the voltage is reduced, while the LED lamp can be lit within a certain voltage range and the brightness can be adjusted.