IP Library Granted Patent US 12,648,063
Granted Patent B2
US 12,648,063 · App. 18/760,914 · Granted Jun 2, 2026

Color temperature controlled and low THD LED lighting devices and systems and methods of driving the same

Inventors: Michael Miskin (Sleepy Hollow, IL); Robert L. Kottritsch (Shefford, GB)
Assignee: Lynk Labs, Inc.
H05B45/42H05B45/20H05B45/24H05B45/44H05B45/46H05B45/48
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Quick Facts
Patent No.
US 12,648,063
App. No.
18/760,914
Granted
Jun 2, 2026
Kind
B2
Abstract

An LED lighting device is disclosed. The example LED lighting device includes an LED circuit having at least two LEDs connected in series that emit a color temperature of white light. The example LED lighting device also includes a switch configured to be manually switched by a user to change the color temperature of white light that is emitted from the LED circuit. Switching the switch changes the color temperature of light emitted from the LED circuit by dimming or increasing a brightness of the at least two LEDs.

Claims (35)

1 . An LED lighting device comprising:

an LED circuit having a first set of LEDs connected in series and second set of LEDs connected in series, wherein the first set of LEDs comprises at least two LEDs that are configured to emit a first color temperature of white light and the second set of LEDs comprises at least two LEDs that are configured to emit a second color temperature of white light that is warmer than the first color temperature of white light;

a switch configured to be manually switched by a user to change a color temperature of white light that is emitted from the LED circuit;

at least one first current limiting device electrically connected between the switch and the first set of LEDs, the at least one first current limiting device configured to limit a first current through the first set of LEDs;

at least one second current limiting device electrically connected between the switch and the second set of LEDs, the at least one second current limiting device configured to limit a second current through the second set of LEDs; and

a housing configured to include at least the LED circuit and the switch,

wherein the LED lighting device is configured to receive an AC voltage input from a mains power source, and

wherein the switch is configured to selectively provide, based on the manual switching without intervening digital logic, current from the mains power source to the at least one first current limiting device and the at least one second current limiting device.

2 . The LED lighting device of claim 1 , wherein the at least one first current limiting device includes a first resistor and the at least one second current limiting device includes a second resistor.

3 . The LED lighting device of claim 1 , wherein the housing has at least one lens.

4 . The LED lighting device of claim 1 , wherein the housing is configured to provide heat sinking for the LED circuit.

5 . The LED lighting device of claim 1 , wherein at least the LED circuit and the switch are mounted on a single substrate.

6 . An LED lighting device comprising:

an LED circuit having a first set of LEDs connected in series and second set of LEDs connected in series, wherein the first set of LEDs comprises at least two LEDs that are configured to emit a first color temperature of white light and the second set of LEDs comprises at least two LEDs that are configured to emit a second color temperature of white light that is warmer than the first color temperature of white light;

a switch configured to be manually switched by a user to change a color temperature of white light that is emitted from the LED circuit;

at least one first current limiting device electrically connected between the switch and the first set of LEDs, the at least one first current limiting device configured to limit a first current through the first set of LEDs;

at least one second current limiting device electrically connected between the switch and the second set of LEDs, the at least one second current limiting device configured to limit a second current through the second set of LEDs; and

a housing configured to include at least the LED circuit,

wherein the switch is configured to selectively provide, based on the manual switching without intervening digital logic, current from a mains power source to the at least one first current limiting device and the at least one second current limiting device.

7 . The LED lighting device of claim 6 , wherein the at least one first current limiting device includes a first resistor and the at least one second current limiting device includes a second resistor.

8 . The LED lighting device of claim 6 , wherein the housing has at least one lens.

9 . The LED lighting device of claim 6 , wherein the housing is configured to provide heat sinking for the LED circuit.

10 . The LED lighting device of claim 6 , wherein at least the LED circuit and the switch are mounted on a single substrate.

11 . An LED lighting device comprising:

a switch configured to be manually switched by a user to change a color temperature of white light that is emitted from an LED circuit;

first current limiting devices electrically connected respectively between the switch and a first set of LEDs, the first current limiting devices configured to limit first currents through the first set of LEDs;

second current limiting devices electrically connected respectively between the switch and a second set of LEDs, the second current limiting devices configured to limit second currents through the second set of LEDs; and

a housing configured to include at least the LED circuit,

wherein the switch is configured to selectively provide, based on the manual switching without intervening digital logic, current from a mains power source to the first current limiting devices and the second current limiting devices.

12 . The LED lighting device of claim 11 , wherein at least the LED circuit and the switch are mounted on a single substrate.

13 . The LED lighting device of claim 11 , wherein the LED circuit is dimmable.

14 . The LED lighting device of claim 11 , wherein switching between the first currents and the second currents controls the color temperature of white light emitted from the LED lighting device.

15 . The LED lighting device of claim 11 , wherein the switch is further configured to turn on or turn off at least the first set of LEDs.

16 . The LED lighting device of claim 11 , wherein the first current limiting devices include respective first resistors and the second current limiting devices include respective second resistors.

17 . The LED lighting device of claim 11 , wherein the housing includes at least one lens.

Continuity (10)
Continuation 17699873 · Mar 21, 2022
Continuation 17001074 · Aug 24, 2020
Continuation 16440884 · Jun 13, 2019
Continuation 15369218 · Dec 5, 2016
Continuation 15005108 · Jan 25, 2016
Continuation 14362173
Continuation In Part PCTUS2012051531 · Aug 20, 2012
Provisional Application 61570200 · Dec 13, 2011
Provisional Application 61630025 · Dec 2, 2011
Related Publication 20240357720A1 · Oct 24, 2024
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