A filament for a light bulb includes a tube and a filament material within the tube, wherein the filament material is configured to be in a liquid state while the light bulb is in use.

The present disclosure relates to a light bulb, including: an enclosure provided with a connection portion, the connection portion being provided with an opening in communication with an interior of the enclosure; a base connected to the connection portion of the enclosure, an inner side surface of the base being provided with a first conductive contact, and an inner end of the base away from the enclosure being provided with a second conductive contact; a light-emitting body including an alternating current filament, a first resistor, and a second resistor, the alternating current filament being configured to emit light and located in the enclosure; and a plug arranged at the opening, the plug being configured to block the opening.

The present disclosure relates to a light bulb, including: an enclosure provided with a connection portion, the connection portion being provided with an opening in communication with an interior of the enclosure; a base connected to the connection portion of the enclosure, an inner side surface of the base being provided with a first conductive contact, and an inner end of the base away from the enclosure being provided with a second conductive contact; a light-emitting body including an alternating current filament, a first resistor, and a second resistor, the alternating current filament being configured to emit light and located in the enclosure; and a plug arranged at the opening, the plug being configured to block the opening.