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US 10,757,783 B2Granted
Color temperature controlled and low THD LED lighting devices and systems and methods of driving the same
AssigneeLynk Labs, Inc.
InventorsMichael Miskin, Robert L. Kottritsch
Life of this patent
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Abstract
The purposes of the devices described herein are to provide an LED lighting device capable of efficiently and economically emitting light having a selectable color temperature or a warm-on-dim feature when driven with AC power and to provide LED lighting devices which have an improved power factor and a reduced total harmonic distortion when powered with AC power.
Claims21
An LED lighting device comprising:
- at least one LED circuit having at least two LEDs, wherein an LED of the at least two LEDs is capable of emitting light of a different color temperature than at least one other LED of the at least two LEDs;
- and
- a switch configured to enable user selection of the different color temperatures of light to be emitted by the at least one LED circuit,
- wherein the color temperature is produced by at least one of the at least two LEDs,
- wherein the at least one LED circuit and the switch are integrated into the LED lighting device,
- wherein the LED lighting device is driven with an AC mains voltage source, and
- wherein the at least one LED circuit is enclosed in a water-resistant housing.
4 more elements
An LED lighting device comprising:
- at least one LED circuit having at least two LEDs, an LED of the at least two LEDs being configured to emit light of a different color temperature than at least one other LED of the at least two LEDs;
- and
- a switch configured to enable user selection of the different color temperatures of light to be emitted by the at least one LED circuit;
- wherein the color temperature is produced by at least one of the at least two LEDs,
- wherein the at least one LED circuit and the switch are integrated into the LED lighting device,
- wherein the LED lighting device is driven with an AC voltage source, and
- wherein the at least one LED circuit and the at least two LEDs are integrated on a single substrate.
4 more elements
An LED lighting device comprising:
- at least one LED circuit having at least two LEDs connected in series;
- a first set of connection leads configured to provide a connection to the at least two LEDs in the at least one LED circuit, wherein the first set of connection leads includes a first connection lead and a second connection lead, the first connection lead being connected to an input of the at least one LED circuit and the second connection lead being connected to an output of the at least one LED circuit;
- and
- a second set of connection leads, wherein the second set of connection leads includes a third connection lead and a fourth connection lead, the third connection lead being connected to an anode of at least one of the at least two LEDs and the fourth connection lead being connected to a cathode of the at least one of the at least two LEDs,
- wherein the second set of connection leads is configured to provide a connection to less than all of the LEDs in the at least one LED circuit, and
- wherein the LED lighting device has a power factor above 90% and total harmonic distortion below 25%.
3 more elements
Dependencies are inferred from the claim text.