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US 10,330,297 B2Granted
Lighting device and method for manufacturing a lighting device
AssigneeSignify Holding B.V.
InventorCornelis Wilhelmus Kwisthout
Life of this patent
Estimating the term…
Abstract
A lighting device for providing decorative lighting is disclosed. In one embodiment, the lighting device comprises a base, said base comprises a base for retro-fitting a traditional incandescent light bulb, a continuous optical element in which a string of a plurality of light emitting diodes is arranged, and an envelope encapsulating said continuous optical element such that the lighting device resembles a traditional incandescent light bulb.
Claims15
A lighting device for providing decorative lighting comprising:
- an optical element in which a string of a plurality of light emitting diodes is arranged;
- and
- an envelope encapsulating said optical element;
- wherein the optical element comprises a light guide encapsulating the plurality of light emitting diodes and having an out-coupling surface for decorative illumination via the light guide;
- wherein the optical element comprises a spiral portion in a substantially horizontal plane with two substantially vertically extended portions connected to ends of the horizontal spiral portion;
- and
- wherein due to a shape of the light guide, a color of the decorative illumination, an intensity of the decorative illumination, or a combination thereof, the decorative illumination via the light guide resembles a traditional incandescent light bulb comprising a filament.
4 more elements
A lighting device for providing decorative lighting comprising:
- a base comprising a heat-sink;
- an optical element disposed on a base in which a first light emitting element is provided as a string of a plurality of light emitting diodes;
- an envelope encapsulating said optical element;
- wherein the optical element comprises a light guide encapsulating the plurality of light emitting diodes and having an out-coupling surface for decorative illumination via the light guide;
- wherein the optical element comprises a spiral portion in a substantially horizontal plane with two substantially vertically extended portions connected to ends of the horizontal spiral portion;
- wherein due to a shape of the light guide, a color of the decorative illumination, an intensity of the decorative illumination, or a combination thereof, the decorative illumination via the light guide resembles a traditional incandescent light bulb comprising a filament;
- and
- second light emitting elements disposed on the base, each spaced apart from each other, and configured to emit light directly without having any light guide, wherein the second light emitting elements comprise light emitting diodes (LEDs).
5 more elements
Dependencies are inferred from the claim text.