LED LUMINAIRE

• US 20180035506A1
• Filed: 10/06/2017
• Published: 02/01/2018
• Est. Priority Date: 02/10/2015
• Status: Active Grant

• Current Assignee: IDEAL Industries Lighting, LLC (Ideal Industries Incorporated)
• Original Assignee: CREE Incorporated (Wolfspeed, Inc.)
• Inventors: Bendtsen, Andrew Dan, Wilcox, Kurt S., Sobieski, John
• Granted Patent: US 10,383,188 B2
• Time in Patent Office: Days
• CPC Class Codes: F21S 8/086 with lighting device attached sideways of the standard, e.g. for roads and highways
• CPC Class Codes: F21V 23/009 the casing being inside the housing of the lighting device
• CPC Class Codes: F21V 23/0464 the sensor sensing the level of ambient illumination, e.g. dawn or dusk sensors
• CPC Class Codes: F21W 2131/103 of streets or roads
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: H05B 45/12 using optical feedback
• CPC Class Codes: H05B 45/3725 Switched mode power supply [SMPS]
• CPC Class Codes: H05B 45/375 using buck topology
• CPC Class Codes: H05B 45/38 using boost topology
• CPC Class Codes: Y02B 20/30 Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Abstract

An outdoor luminaire comprises a housing adapted to be mounted on an outdoor structure, an input disposed in the housing that receives AC power, and at least one rectification element coupled to the input and which produces rectified AC electrical power comprising a plurality of cycles. At least one LED driver circuit is coupled to the at least one rectification element and a plurality of LEDs is coupled to the at least one LED driver circuit. The LEDs are turned on at different points during each of the plurality of cycles and together develop an output level of at least about 2000 lumens.

Claims

1. An outdoor luminaire, comprising:

a housing adapted to be mounted on an outdoor structure;

an input disposed in the housing that receives AC power, at least one rectification element coupled to the input and which produces rectified AC electrical power comprising a plurality of cycles;

at least one LED driver circuit coupled to the at least one rectification element; and

a plurality of LEDs coupled to the at least one LED driver circuit;

wherein the plurality of LEDs comprises first, second, and third subsets of LEDs that are turned on sequentially at more than two different points during each individual cycle of the plurality of cycles and together develop an output level of at least about 2000 lumens; and

wherein each of the first, second, and third subsets of LEDs is turned on for a different

length of time during each cycle.

2. The outdoor luminaire of claim 1, wherein the at least one LED driver circuit comprises first and second driver circuits.

3. The outdoor luminaire of claim 2, wherein the first and second driver circuits are coupled together in series.

4. The outdoor luminaire of claim 1, wherein the at least one LED driver circuit comprises first, second, and third driver circuits.

5. The outdoor luminaire of claim 4, wherein the first, second, and third driver circuits are coupled together in parallel.

6. The outdoor luminaire of claim 4, wherein the at least one LED driver circuit comprises at least two driver circuits connected together in series or parallel.

7. The outdoor luminaire of claim 6, wherein an adapter circuit interconnects the at least two driver circuits.

8. The outdoor luminaire of claim 6, wherein the adapter circuit comprises a plurality of jumpers.

9. The outdoor luminaire of claim 8, wherein the luminaire comprises one of a streetlight, a parking structure light, a parking lot light, and an outdoor rural luminaire.

10. The outdoor luminaire of claim 1, wherein the LED luminaire is used in an outdoor application.