Led filament

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.

Dependencies are inferred from the claim text.