US 11,879,621 B2
Lighting device with light-emitting filaments
Ties Van Bommel, Norst (NL); Rifat Ata Mustafa Hikmet, Eindhoven (NL); and Robert Jacob Pet, Waalre (NL)
Assigned to SIGNIFY HOLDING B.V., Eindhoven (NL)
Filed by SIGNIFY HOLDING B.V., Eindhoven (NL)
Filed on Jun. 3, 2023, as Appl. No. 18/205,521.
Application 18/205,521 is a division of application No. 17/619,351, granted, now 11,692,696, previously published as PCT/EP2020/065795, filed on Jun. 8, 2020.
Claims priority of application No. 19180908 (EP), filed on Jun. 18, 2019.
Prior Publication US 2023/0304652 A1, Sep. 28, 2023
Int. Cl. F21V 23/00 (2015.01); F21V 19/00 (2006.01); F21V 23/06 (2006.01); F21Y 103/10 (2016.01); F21Y 115/10 (2016.01)
CPC F21V 23/006 (2013.01) [F21V 19/0035 (2013.01); F21V 23/06 (2013.01); F21Y 2103/10 (2016.08); F21Y 2115/10 (2016.08)] 15 Claims
OG exemplary drawing
 
1. A lighting device comprising:
a plurality of light-emitting filaments, wherein each light-emitting filament comprises:
a carrier,
two electrical contacts attached to the carrier,
a plurality of solid-state light sources mounted on the carrier and electrically connected to the first and second electrical contacts, and
an encapsulant comprising a translucent material, wherein the encapsulant at least partially encloses the solid-state light sources so as to receive light emitted by the solid-state light sources;
two rigid electrically conducting wires which extend in parallel and across which the filaments are arranged in parallel electrically,
wherein the light-emitting filaments are arranged consecutively along the two rigid electrically conducting wires and extend therebetween,
wherein one of the electrical contacts of each light-emitting filament is electrically connected to one of the rigid electrically conducting wires at a first point on said one of the rigid electrically conducting wires and the other electrical contact of each light-emitting filament is electrically connected to the other one of the rigid electrically conducting wires at a second point on said other one of the rigid electrically conducting wires, and
wherein the first and second points associated with each light-emitting filament are arranged at a distance from each other on an axis, and wherein the axis of each light-emitting filament is non-perpendicular to a tangent to said one of the rigid electrically conducting wires at the first point and to a tangent to said other one of the rigid electrically conducting wires, at the second point.