Tri-light

• US 8,436,553 B2
• Filed: 08/04/2011
• Issued: 05/07/2013
• Est. Priority Date: 01/26/2007
• Status: Active Grant

• Current Assignee: Integrated Illumination Systems, Inc.
• Original Assignee: Integrated Illumination Systems, Inc.
• Inventors: Zampini, Thomas Lawrence II, Zampini, Mark Alphonse, Zampini, Thomas L., Ross, David
• Primary Examiner(s): VU, JIMMY T
• Application Number:
  US13/198,513
• Publication Number:
  US 20120025709A1
• Time in Patent Office: 642 Days
• Field of Search: 315/185.S, 315/224, 315/225, 315/246, 315/247, 315/291, 315/297, 315307-326
• US Class Current: 315/291
• CPC Class Codes: H05B 45/00 Circuit arrangements for operating light-emitting diodes [LED]
• CPC Class Codes: H05B 45/20 Controlling the colour of the light
• CPC Class Codes: H05B 45/3725 Switched mode power supply [SMPS]
• CPC Class Codes: H05B 45/395 Linear regulators

Abstract

A lighting arrangement includes a light fixture including a plurality of light sources wherein each light source is configured to generate a different color light when energized; and a circuit arrangement included in the light fixture and operatively interposed between the plurality of light sources and a source of electrical power. This circuit arrangement is responsive to brief interruptions in the supply of electrical power of less than a predetermined period to simultaneously de-energize all of the light sources for a full duration of the interruption and to subsequently toggle energization from one light source to the next and thereby produce different color light in response to the cessation of the brief interruption.

Claims

1. A system for changing between a plurality of colors of light via toggling a single switch, the system comprising:

a power source electrically connected via a switch to a regulator;

a microcontroller electrically connected to the regulator to receive power from the power source, the microcontroller configured to respond to interruptions in voltage from the power source;

an input capacitor electrically connected via an internal power supply to the microcontroller, the input capacitor selected to maintain a supply of power from the internal power supply to the microcontroller for a predetermined time period comprising a time period greater than a time period of an interruption to the power source;

a plurality of light sources electrically connected to receive power via the regulator, each light source configured to generate a different color when energized;

wherein toggling of the switch causes the interruption of power from the power source, the microcontroller powered during the interruption and for the predetermined time period by the supply of power from the internal power supply; and

wherein the microcontroller detects the interruption of power via the power source and responsive to the detection the microcontroller energizes a light source of the plurality of light sources.

2. The system of claim 1, wherein the power source comprises an external 9-30v DC power source.

3. The system of claim 1, wherein the internal power supply comprises a 5V power supply.

4. The system of claim 1, wherein the microcontroller energizes the light source during the predetermined time period of receiving power from the internal power supply.

5. The system of claim 1, wherein the input capacitor is selected to maintain the supply of power from the internal power supply for the predetermined time period comprising a time period within a range of between two and four seconds.

6. The system of claim 1, wherein the input capacitor is selected to maintain the supply of power from the internal power supply for the predetermined time period comprising the time period greater than comprising the time period of the interruption to the power source by at least a predetermined amount.

7. The system of claim 1, wherein the microcontroller is electrically connected to a plurality of field effect transistors, each field effect transistor of the plurality of field effect transistors controlling a connection between a corresponding light source of the plurality of light sources and ground.

8. The system of claim 7, wherein responsive to the detection the microcontroller energizes the light source of the plurality of light sources by sending a control signal to a field effect transistor to render the field effect transistor conductive to establish a ground connection and wherein current from the regulator is permitted to flow to the field effect transistor.

9. The system of claim 1, wherein the microcontroller detects that the interruption of power from the power supply is interrupted at least a defined duration of time.

10. The system of claim 1, wherein upon detecting power from the power supply has resumed the microcontroller shuts off the regulator and changes to a next field effect transistor as designated in a toggle control program.

11. The system of claim 1, wherein the regulator comprises one of a linear regulator or a switching regulator.

12. A light fixture configured to change between a plurality of colors of light via interruption to an external power source, the light fixture comprising:

a regulator electrically connected to an external power source;

a microcontroller electrically connected to the regulator to receive power from the external power source;

an internal power supply electrically connected to the microcontroller and a capacitor, the capacitor configured to maintain a supply of power from the internal power supply to the microcontroller for a predetermined time period comprising a time period greater than a time period of an interruption to the external power source; and

a plurality of light emitting diodes (LEDs) electrically connected to the regulator, each LED configured to emanate a different color;

wherein the microcontroller detects the interruption of power from the external power source and responsive to the detection sends a signal to trigger a light source of the plurality of light sources to emanate, the microcontroller maintaining power during the interruption by the supply of power from the internal power supply for the predetermined time period.

13. The light fixture of claim 12, wherein the external power source is controlled by a switch.

14. The light fixture of claim 13, wherein toggling the switch causes the interruption of power from the external power source.

15. The light fixture of claim 12, further comprising a plurality of field effect transistors electrically connected to the microcontroller, each field effect transistor of the plurality of field effect transistors controlling a connection between a corresponding light source of the plurality of light sources and ground.

16. The light fixture of claim 15, wherein responsive to the detection the microcontroller sends the signal to a field effect transistor corresponding to a LED of the plurality of LEDs.

17. The light fixture of claim 16, wherein responsive to the signal the field effect transistor is conductive to establish a ground connection and responsive to the establishing the ground connection current from the regulator is permitted to flow to the field effect transistor.

18. The light fixture of claim 16, wherein the regulator comprises one of a linear regulator or a switching regulator.

19. The light fixture of claim 12, wherein the microcontroller detects that the interruption of power from the power supply exceeds a predetermined duration of time.

20. The light fixture of claim 12, wherein upon detecting power from the power supply has resumed the microcontroller shuts off the regulator and changes to a next field effect transistor as designated in a toggle control program.

21. The light fixture of claim 12, wherein the predetermined time period comprises the time period greater, by at least a predetermined amount, than the time period of interruption to the external power source from toggling a switch.

22. The light fixture of claim 12, wherein the microcontroller sends the signal for a LED of the plurality of LEDS designated by a toggling control program.