LED filament with heat sink
AssigneeSignify Holding B.V.
InventorsTies Van Bommel, Rifat Ata Mustafa Hikmet
Life of this patent
Estimating the term…
Abstract
A light emitting diode, LED, filament (110), configured to emit LED filament light, comprising an array of a plurality of light emitting diodes (120), LEDs, configured to emit LED light, a carrier (130) arranged to support the plurality of LEDs, at least one heat sink (140) arranged in thermal connection with the carrier for a dissipation of heat from the plurality of LEDs during operation, wherein the at least one heat sink comprises a base portion (150) extending parallel to the carrier, and a plurality of fins (160) projecting from the base portion, and an encapsulant (170) comprising a translucent material, wherein the encapsulant at least partially encloses the plurality of LEDs, the carrier and the at least one heat sink.
Claims15
A light emitting diode, LED, filament, configured to emit LED filament light, comprising
- an array of a plurality of light emitting diodes, LEDs, configured to emit LED light,
- a carrier arranged along a longitudinal axis of the LED filament and configured to support the plurality of LEDs,
- at least one heat sink arranged in thermal connection with the carrier for a dissipation of heat from the plurality of LEDs during operation, the at least one heat sink having a base portion extending parallel to the carrier along the longitudinal axis of the LED filament, and a plurality of fins projecting perpendicularly from the base portion relative to the longitudinal axis of the LED filament, and
- an encapsulant comprising a translucent material, the encapsulant at least partially enclosing the plurality of LEDs, the carrier, and the at least one heat sink,
- wherein the at least one heat sink has a metal foil, and the base portion of the at least one heat sink has a plurality of apertures configured to transmit at least part of the LED filament light through the plurality of apertures.
A light emitting diode, LED, filament, configured to emit LED filament light, comprising
- an array of a plurality of light emitting diodes, LEDs, configured to emit LED light,
- a carrier arranged along a longitudinal axis of the LED filament and configured to support the plurality of LEDs,
- at least one heat sink arranged in thermal connection with the carrier for a dissipation of heat from the plurality of LEDs during operation, the at least one heat sink having a base portion extending parallel to the carrier along the longitudinal axis of the LED filament, and a plurality of fins projecting perpendicularly from the base portion relative to the longitudinal axis of the LED filament, and
- an encapsulant comprising a translucent material, the encapsulant at least partially enclosing the plurality of LEDs, the carrier, and the at least one heat sink,
- wherein the at least one heat sink has a metal foil, the base portion of the at least one heat sink has a plurality of apertures configured to transmit at least part of the LED filament light through the plurality of apertures, the encapsulant has at least one of a light-scattering material configured to scatter light emitted from the plurality of LEDs and a luminescent material configured to at least partly convert light emitted from the plurality of LEDs into converted light, the encapsulant is flexible and the at least one heat sink is flexible, and the LED filament has at least one of a spiral, meander, coil, and helix shape.
Dependencies are inferred from the claim text.