Patent ID: 11346508

Abstract:
An LED filament including at least one filament substrate. The at least one filament substrate each includes at least two substrate sections connected in sequence. The substrate has two opposite light-emitting surfaces. The light-emitting surfaces of adjacent substrate sections are twisted with respect to each other around the axis which is along the extending direction of the filament substrate. On the light-emitting surfaces LED light-emitting elements are provided. The LED filament structure can facilitate heat dissipation and comprises a plurality of light-emitting surfaces oriented in different directions, so that the LED filament can emit light toward a plurality of angles so as to have a more uniform and omni-directional light-emitting effect. In addition, the LED light-emitting elements on the plurality of filaments can also be electrically connected in different manners, such that LED light-emitting elements of different colors can be provided, thereby realizing the control of multiple light-emitting effects.