US Patent 11619357 LED filament and bulb

A filament and a bulb are provided. The support in the filament includes a plurality of board bodies, and two adjacent board bodies are connected by a conductive connecting pin and an outer end of each of the board bodies at both ends is connected with a conductive pin. The bulb includes a lamp cap, a shell, a stem sealed with the shell, a conductive support fixed to the stem and a plurality of the LED filaments, the filaments are electrically connected to the conductive support.