US 11,841,129 B2
Flexible light emitting diode filament comprising at least one alignment member
Ties Van Bommel, Horst (NL); and Rifat Ata Mustafa Hikmet, Eindhoven (NL)
Assigned to SIGNIFY HOLDING B.V., Eindhoven (NL)
Appl. No. 17/761,465
Filed by SIGNIFY HOLDING B.V., Eindhoven (NL)
PCT Filed Sep. 14, 2020, PCT No. PCT/EP2020/075606
§ 371(c)(1), (2) Date Mar. 17, 2022,
PCT Pub. No. WO2021/052899, PCT Pub. Date Mar. 25, 2021.
Claims priority of application No. 19198394 (EP), filed on Sep. 19, 2019.
Prior Publication US 2022/0341570 A1, Oct. 27, 2022
Int. Cl. F21V 19/00 (2006.01); F21K 9/232 (2016.01); F21Y 115/10 (2016.01)
CPC F21V 19/002 (2013.01) [F21K 9/232 (2016.08); F21Y 2115/10 (2016.08)] 10 Claims
OG exemplary drawing
 
1. A light-emitting diode, LED, filament including an elongated filament core comprising:
a flexible elongated carrier having a first side;
a plurality of LEDs arranged on said first side; and
an encapsulant embedding at least said plurality of LEDs;
wherein at least one alignment member protrudes from said filament core,
wherein said at least one alignment member is formed by a protrusion of said encapsulant or the entire carrier is embedded in the encapsulant and said at least one alignment member is formed by an alignment element partly inserted into said encapsulant to a specific depth,
wherein said alignment member comprises an end portion which is wider than a width of a portion of the alignment member which is adjacent to the filament core, and
wherein at least a portion of said filament core has a cylindrical shape, and wherein said alignment member protrudes radially from the cylindrically shaped portion.