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US-20260129730-A1 - LED CIRCUITS AND ASSEMBLIES

US20260129730A1US 20260129730 A1US20260129730 A1US 20260129730A1US-20260129730-A1

Abstract

An LED lighting device is disclosed. The LED lighting device includes a first LED circuit and at least one additional LED circuit. The first LED circuit and the at least one additional LED circuit each include LEDs connected in series. The LEDs in the first LED circuit emit a different color of light than the LEDs in the at least one additional LED circuit. The LED lighting device also includes a switch configured to be actuated by an end user and provide the end user with a means to produce a change in brightness of at least one of the first LED circuit or the at least one additional LED circuit.

Inventors

  • Michael Miskin
  • Robert L. Kottritsch

Assignees

  • LYNK LABS, INC.

Dates

Publication Date
20260507
Application Date
20251117

Claims (20)

  1. 1 . An LED lighting device comprising: a first LED circuit and at least one additional LED circuit, wherein the first LED circuit and the at least one additional LED circuit each includes packaged LEDs connected in series, wherein the packaged LEDs in the first LED circuit emit a different color of light than the packaged LEDs in the at least one additional LED circuit, and wherein at least two of the packaged LEDs in the first LED circuit are separated from each other by a distance of 3 mm or less; and a switch configured to be actuated between different positions by an end user and provide the end user with a first position for selecting at least one of a different level of voltage or current to be input to at least one of the first LED circuit and the at least one additional LED circuit to produce a change in brightness of the at least one of the first LED circuit and the at least one additional LED circuit, wherein the switch is integrated within the LED lighting device such that the switch is positioned to enable actuation by the end user.
  2. 2 . The LED lighting device of claim 1 , further comprising a lighting device package, wherein the lighting device package includes wire leads for electrical connection of the LED lighting device to a mains power source.
  3. 3 . The LED lighting device of claim 1 , further comprising at least one LED driver circuit configured to receive a high voltage input from a mains power source and provide a lower voltage DC output to at least one of the first LED circuit or the at least one additional LED circuit.
  4. 4 . The LED lighting device of claim 1 , wherein the first LED circuit and the at least one additional LED circuit are driven with a different DC voltage level based on a position of the switch.
  5. 5 . The LED lighting device of claim 1 , further comprising a driver configured to provide a voltage and a current to only one of the first LED circuit or the at least one additional LED circuit when the end user actuates the switch.
  6. 6 . The LED lighting device of claim 1 , further comprising a PCB substrate, wherein at least one packaged LED from the first LED circuit and at least one packaged LED from the at least one additional LED circuit are mounted on the PCB substrate and separated from each other by a distance of 3 millimeters (“mm”) or less.
  7. 7 . The LED lighting device of claim 1 , further comprising at least one LED driver circuit configured to receive a voltage input from a mains power source and provide a DC voltage output of at least 24 volts to at least one of the first LED circuit and the at least one additional LED circuit when at least one of the first LED circuit or at least one additional LED circuit is emitting light.
  8. 8 . The LED lighting device of claim 1 , wherein the switch is mounted on a printed circuit board with the first LED circuit and the at least one additional LED circuit.
  9. 9 . An LED lighting device comprising: a first LED circuit and at least one additional LED circuit, wherein the first LED circuit and the at least one additional LED circuit each includes packaged LEDs, wherein the packaged LEDs in the first LED circuit emit a different color of light than the packaged LEDs in the at least one additional LED circuit, and wherein the packaged LEDs in the first LED circuit and the packaged LEDs in the at least one additional LED circuit are separated from each other by a distance of 3 mm or less; and a switch configured to be actuated between different positions by an end user and provide the end user with a first position for selecting at least one of a different level of voltage or current to be input to at least one of the first LED circuit and the at least one additional LED circuit to produce a change in brightness of the at least one of the first LED circuit and the at least one additional LED circuit, wherein the switch is positioned to enable actuation by the end user.
  10. 10 . The LED lighting device of claim 9 , further comprising a lighting device package that includes wire leads for electrical connection of the LED lighting device to a mains power source.
  11. 11 . The LED lighting device of claim 9 , further comprising at least one LED driver circuit configured to receive a high voltage input from a mains power source and provide a lower voltage DC output of at least 24 volts to at least one of the first LED circuit or the at least one additional LED circuit when at least one of the first LED circuit or at least one additional LED circuit is emitting light.
  12. 12 . The LED lighting device of claim 9 , further comprising a driver configured to provide a voltage and a current to only one of the first LED circuit or the at least one additional LED circuit when the end user actuates the switch.
  13. 13 . The LED lighting device of claim 9 , further comprising at least one LED driver circuit configured to receive a high voltage input from a mains power source and provide a DC voltage output to at least one of the first LED circuit and the at least one additional LED circuit.
  14. 14 . The LED lighting device of claim 9 , wherein the first LED circuit and the at least one additional LED circuit are driven with a different DC voltage level based on a position of the switch.
  15. 15 . The LED lighting device of claim 9 , further comprising a PCB substrate, wherein at least one packaged LED from the first LED circuit and at least one packaged LED from the at least one additional LED circuit are mounted on the PCB substrate and separated from each other by a distance of 3 millimeters (“mm”) or less.
  16. 16 . The LED lighting device of claim 9 , wherein the switch is mounted on a printed circuit board with the first LED circuit and the at least one additional LED circuit.
  17. 17 . An LED lighting device comprising: a first LED circuit and at least one additional LED circuit, wherein the first LED circuit and the at least one additional LED circuit each includes packaged LEDs mounted on a single substrate, wherein the packaged LEDs in the first LED circuit emit a different color of light than the packaged LEDs in the at least one additional LED circuit, and wherein the packaged LEDs in the first LED circuit and the packaged LEDs in the at least one additional LED circuit are separated from each other by a distance of 3 mm or less; and a switch configured to be actuated between different positions by an end user and provide the end user with a first position for selecting at least one of a different level of voltage or current to be input to at least one of the first LED circuit and the at least one additional LED circuit to produce a change in brightness of at least one of the first LED circuit or the at least one additional LED circuit, wherein the switch is integrated within the LED lighting device such that the switch is positioned to enable actuation by the end user.
  18. 18 . The LED lighting device of claim 17 , further comprising a lighting device package, wherein the lighting device package includes wire leads for electrical connection of the LED lighting device to a mains power source.
  19. 19 . The LED lighting device of claim 17 , further comprising at least one LED driver circuit configured to receive a high voltage input from a mains power source and provide a lower voltage DC output to at least one of the first LED circuit or the at least one additional LED circuit.
  20. 20 . The LED lighting device of claim 17 , wherein the first LED circuit and the at least one additional LED circuit are driven with a different DC voltage level based on a position of the switch.

Description

PRIORITY CLAIM This application is a continuation of U.S. patent application Ser. No. 18/233,724, filed Aug. 14, 2023, which is a continuation of U.S. patent application Ser. No. 17/728,516, filed Apr. 25, 2022, now U.S. Pat. No. 11,729,884, which is a continuation of U.S. patent application Ser. No. 17/233,891, filed Apr. 19, 2021, now U.S. Pat. No. 11,317,495, which is a continuation of U.S. patent application Ser. No. 15/334,001, filed Oct. 25, 2016, now U.S. Pat. No. 10,986,714, which is a continuation-in-part of U.S. patent application Ser. No. 14/172,644, filed Feb. 4, 2014, now U.S. Pat. No. 9,750,098, which is a continuation of U.S. patent application Ser. No. 13/322,796, filed Nov. 28, 2011, now U.S. Pat. No. 8,648,539, which is a national phase application of International Application No. PCT/US2010/001597, filed May 28, 2010, which claims priority to U.S. Provisional Application No. 61/217,215, filed May 28, 2009, and is a continuation-in-part of U.S. patent application Ser. No. 12/287,267, filed Oct. 6, 2008, now U.S. Pat. No. 8,179,055, which claims the priority to U.S. Provisional Application No. 60/997,771, filed Oct. 6, 2007; the contents of each of these applications are expressly incorporated herein by reference. TECHNICAL FIELD The present invention relates generally to light-emitting diode (“LED”) circuits and assemblies; and more specifically to scalable alternating current (“AC”) driven LED circuits and assemblies. SUMMARY While not intending to limit the scope of the claims or disclosure, in brief summary, the present disclosure and claims are directed to providing improved ease of designing and building lighting fixtures using AC-driven LEDs. Disclosed and claimed are LED circuits having scalable circuit configurations and LED package assembly configurations which can be used in an AC-drive platform to more easily match the voltage requirements of the lighting fixture(s) or systems in which the LED's are desired. Circuits and LED package assemblies are claimed and disclosed which reduce objectionable flicker produced from AC-driven LEDs and to produce more light per component. Packaged LED's are provided for lighting design according to the invention, which address flicker at low frequencies (e.g. 50/60 Hz) while being scalable as desired for a particular lighting goal without resort to designing individual assemblies at the semiconductor die level. Circuits are also disclosed and claimed which provide for some of the LEDs in a circuit to be on during both positive and negative phases of an AC source, to among other things, address flicker. Also, circuits are claimed and disclosed where a basic circuit design provides a voltage and current performance whereby scalability or matching a particular voltage requirement is achieved by configuring LEDs in the basic design and/or by joining one or more of the basic circuits together in series or parallel to achieve the design requirement. According to an embodiment of the invention, an AC-driven LED circuit is proposed having a first parallel circuit having LEDs. Each LED has an input and an output, and the circuit having at least first and second branches connecting at first and second common points, the common points providing input and output for an AC driving current for the circuit. The first branch having a first and a second LED, and the second branch having a third and a fourth LED. The first LED is connected to the second LED in opposing series relationship with the inputs of the first and second LEDs defining a first branch junction. The third LED is connected to the fourth LED in opposing series with the outputs of the third and fourth LEDs defining a second branch junction. The first and second branches are connected to one another such that the output of the first LED is connected to the input of the third LED at the first common point and the output of the second LED is connected to the input of the fourth LED at the second common point. A first cross-connecting circuit branch having at least a fifth LED, the first cross-connecting circuit being configured such that the input of the fifth LED is connected to second branch junction and the output is connected to the first branch junction. According to another embodiment of the invention, an AC-driven LED circuit may comprise one or more additional parallel circuits each being the same as the first parallel circuit identified above. Each additional circuit being conductively connected to the first parallel circuit and to one another at their common points for providing an input and an output for an AC driving current of the circuit. According to other embodiments, the additional parallel circuits may be connected in series to the first parallel circuit and to one another or the additional parallel circuits may be connected in parallel to the first parallel circuit and to one another. According to another embodiment of the invention, n additional LEDs, in pairs, may be provided i