CONFIGURABLE LIGHT EMITTING DIODE LIGHTING UNIT

• US 20120287627A1
• Filed: 01/06/2012
• Published: 11/15/2012
• Est. Priority Date: 05/13/2011
• Status: Active Grant

• Current Assignee: Lumenpulse Group Inc.
• Original Assignee: Lumenpulse Lighting Inc (Lumenpulse Inc.)
• Inventors: Campbell, Gregory, Hamel, Yvan
• Granted Patent: US 8,459,833 B2
• Time in Patent Office: Days
• US Class Current: 362/235
• CPC Class Codes: F21V 21/30 Pivoted housings or frames
• CPC Class Codes: F21V 23/023 Power supplies in a casing F21V23/003 takes precedence
• CPC Class Codes: F21V 29/15 Thermal insulation
• CPC Class Codes: F21V 29/507 of means for protecting lighting devices from damage, e.g. housings
• CPC Class Codes: F21V 29/74 with fins or blades
• CPC Class Codes: F21V 29/80 with pins or wires
• CPC Class Codes: F21V 29/83 the elements having apertures, ducts or channels, e.g. heat radiation holes
• CPC Class Codes: F21V 29/89 Metals
• CPC Class Codes: F21V 5/007 Array of lenses or refractors for a cluster of light sources, e.g. for arrangement of multiple light sources in one plane combination of two or more refractors F21V5/008
• CPC Class Codes: F21Y 2105/10 comprising a two-dimensional array of point-like light-generating elements
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: Y10T 29/49002 Electrical device making

Abstract

A light emitting diode (LED) lighting unit including power supply housing accommodating a power supply and an LED array housing defining an internal compartment and a lens sealing the internal compartment. A different respective LED array is mounted on at least one of a number of common printed circuit boards accommodated within the internal compartment. The different LED arrays provide different illumination, controlling one or more illumination features such as beamwidth, color and color temperature. Physical isolation is also provided between the LED array housing and the power supply housing to allow for controlled or otherwise restricted access to one or more of the different housings. In at lest some embodiments, one or more of the LED array housing and power supply housing are configured with a centrally located chimney, drawing in cooling air from a space provided between the to housings to facilitate cooling of the lighting unit.

Claims

1. A solid-state lighting unit comprising:

a solid-state array housing defining an internal compartment and having at least one transparent lens for sealing the internal compartment;

a plurality of solid-state lighting circuit card assemblies disposed within the solid-state array housing, each circuit card assembly comprising a common circuit card and a respective plurality of solid state lighting elements, a respective plurality of solid state lighting elements of at least one circuit card assembly of the plurality of solid-state lighting circuit card assemblies differing in performance with respect to a respective plurality of solid state lighting elements of at least another circuit card assembly of the plurality of solid-state lighting circuit card assemblies; and

a controller in electrical communication with each circuit card assembly of the plurality of solid-state lighting circuit card assemblies, the controller configured to independently control each circuit card assembly of the plurality of solid-state lighting circuit card assemblies.

2. The solid-state lighting unit of claim 1, wherein a respective plurality of solid state lighting elements of at least one circuit card assembly of the plurality of solid-state lighting circuit card assemblies comprise a first illumination beam width and a respective plurality of solid state lighting elements of at least another circuit card assembly of the plurality of solid-state lighting circuit card assemblies comprise a second illumination beam width, different from the first illumination beam width.

3. The solid-state lighting unit of claim 1, wherein a respective plurality of solid state lighting elements of at least one circuit card assembly of the plurality of solid-state lighting circuit card assemblies comprise a first illumination color and a respective plurality of solid state lighting elements of at least another circuit card assembly of the plurality of solid-state lighting circuit card assemblies comprise a second illumination color, different from the first illumination color.

4. The solid-state lighting unit of claim 1, wherein a respective plurality of solid state lighting elements of at least one circuit card assembly of the plurality of solid-state lighting circuit card assemblies comprise a first illumination color temperature and a respective plurality of solid state lighting elements of at least another circuit card assembly of the plurality of solid-state lighting circuit card assemblies comprise a second illumination color temperature, different from the first illumination color temperature.

6. The solid-state lighting unit of claim 1, wherein solid state lighting elements comprise light emitting diodes (LED).

7. The solid-state lighting unit of claim 1, wherein the plurality of solid-state lighting circuit card assemblies are arranged equidistant from the least one transparent lens.

8. The solid-state lighting unit of claim 7, wherein the plurality of solid-state lighting circuit card assemblies are coplanar.

9. The solid-state lighting unit of claim 1, wherein the plurality of solid-state lighting circuit card assemblies are shaped to substantially preserve a hexagonal close-pack arrangement of solid state lighting elements of each respective solid-state lighting circuit card assembly across the plurality of solid-state lighting circuit card assemblies.

10. The solid-state lighting unit of claim 1, further comprising optics for controlling illumination of each solid-state lighting element of the plurality of solid state lighting elements of each circuit card assembly of the plurality of solid-state lighting circuit card assemblies.

11. The solid-state lighting unit of claim 10, wherein the optics of at least one circuit card assembly of the plurality of solid-state lighting circuit card assemblies differ from optics of at least another circuit card assembly of the plurality of solid-state lighting circuit card assemblies.

5. (canceled)

12. A method for assembling a solid-state lighting unit, comprising:

providing a solid-state array housing defining an internal compartment and having at least one transparent lens for sealing the internal compartment;

providing a plurality of common solid-state lighting circuit cards;

populating at least one circuit card of the plurality of common solid-state lighting circuit cards with a first plurality of solid-sate lighting elements;

populating at least another circuit card of the plurality of common solid-state lighting circuit cards with a second plurality of different solid-sate lighting elements;

disposing within the solid-state array housing, the populated circuit cards; and

providing a controller in electrical communication with each populated solid-state lighting circuit card of the plurality of solid-state lighting circuit cards, the controller configured to independently control each populated solid-state lighting circuit card of the plurality of solid-state lighting circuit cards.

13. The method of claim 12, wherein the first plurality of solid-sate lighting elements comprise a first illumination beam width and the second plurality of solid state lighting elements comprise a second illumination beam width, different from the first illumination beam width.

14. The method of claim 12, wherein the first plurality of solid-sate lighting elements comprise a first illumination color and the second plurality of solid state lighting elements comprise a second illumination color, different from the first illumination color.

15. The method of claim 12, wherein the first plurality of solid-sate lighting elements comprise a first illumination color temperature and the second plurality of solid state lighting elements comprise a second illumination color temperature, different from the first illumination color temperature.

17. The method of claim 12, wherein each of the first and second pluralities of solid state lighting elements comprises light emitting diodes (LED).

18. The method of claim 12, wherein the plurality of populated solid-state lighting circuit cards are arranged equidistant from the least one transparent lens.

19. The method of claim 18, wherein the plurality of populated solid-state lighting circuit cards are coplanar.

20. The method of claim 12, wherein disposing within the solid-state array housing, the populated circuit cards preserves a hexagonal close-pack arrangement of solid state lighting elements of each respective populated solid-state lighting circuit card across the plurality of populated solid-state lighting circuit cards.

21. The method of claim 12, further comprising providing optics for controlling illumination of each solid-state lighting element of the plurality of solid state lighting elements of each populated circuit card of the plurality of populated solid-state lighting circuit cards.

22. The method of claim 21, wherein the optics of at least one populated circuit card of the plurality of populated solid-state lighting circuit cards differ from optics of at least another populated circuit card of the plurality of populated solid-state lighting circuit cards.

16. (canceled)