High bay light fixture

Patent metadata

Field	Value
Publication number	US-10036534-B2
Application number	US-201514677797-A
Country	US
Kind code	B2
Filing date	Apr 2, 2015
Priority date	Apr 2, 2015
Publication date	Jul 31, 2018
Grant date	Jul 31, 2018

Abstract

A high bay light fixture includes a substantially disc-shaped base, disposed horizontally so as to define an upper surface, a lower surface and a vertical axis. Groups of first light emitting diodes (LEDs) couple with the lower surface of the base. The LEDs within each group of first LEDs are arranged along one or more arcs of substantially constant radius relative to the vertical axis. At least one lower optic couples with the lower surface of the base such that the lower surface and the lower optic enclose the groups of the first LEDs. A plurality of second LEDs couples with the upper surface of the base. Upper optics couple with the upper surface of the base, such that the upper surface of the base and each of the upper optics enclose at least one of the second LEDs.

First claim

What is claimed is:

1. A high bay light fixture, comprising:
a. a substantially disc-shaped base, the base being disposed horizontally so as to define an upper surface, a lower surface and a vertical axis extending through a centroid of the base;
b. one or more planar printed circuit boards (PCBs) coupled with the lower surface of the base;
c. a plurality of groups of first LEDs, each group of the first LEDs including a plurality of the first LEDs, the plurality of groups being coupled with the one or more planar PCBs,
the LEDs within each group of the first LEDs being arranged along one or more arcs of substantially constant radius relative to the vertical axis,
the arcs being arranged symmetrically with respect to the vertical axis;

d. at least one lower optic coupled with the lower surface of the base such that the lower surface of the base and the at least one lower optic enclose the groups of the first LEDs;
e. a plurality of arc shaped reflectors corresponding in number to the plurality of groups of the first LEDs, wherein each of the arc shaped reflectors couples with one of the one or more planar PCBs; such that
each of the arc shaped reflectors surrounds a corresponding one of the groups of the first LEDs in the plane of the one of the one or more planar PCBs with which the arc shaped reflector couples, and
the lower surface of the base and the lower optic enclose the groups of the first LEDs and the arc shaped reflectors,
wherein the one or more planar PCBs are a plurality of the planar PCBs that correspond in number to the plurality of groups of first LEDs and to the plurality of arc shaped reflectors, such that each group of the first LEDs and the corresponding one of the arc shaped reflectors couples with a separate, respective one of the planar PCBs

f. a plurality of second LEDs coupled with the upper surface of the base;
g. a plurality of upper optics coupled with the upper surface of the base, such that the upper surface of the base and each of the upper optics enclose at least one of the second LEDs; and
h. an electronics box including power supplies that convert external AC power to low voltage power for operating the first and second LEDs, the electronics box being disposed adjacent to the upper surface of the base and extending along the vertical axis therefrom.

2. The high bay light fixture of claim 1 , wherein the plurality of groups of first LEDs consists of four groups of the first LEDs, the plurality of arc shaped reflectors consists of four arc shaped reflectors, and each of the one or more arcs subtends an angle of about seventy degrees about the vertical axis.

3. The high bay light fixture of claim 2 , wherein the one or more planar PCBs consist of four of the planar PCBs, and wherein one respective group of the first LEDs and a respective one of the arc shaped reflectors couples with each of the planar PCBs.

4. The high bay light fixture of claim 2 , wherein:
the plurality of second LEDs consists of four groups of the second LEDs;
the plurality of upper optics consists of four upper optics, each of the four upper optics and the upper surface enclosing one of the four groups of the second LEDs; and
centroids of each of the four groups of the first LEDs and of the second LEDs are azimuthally offset by about forty-five degrees.

5. The high bay light fixture of claim 1 , wherein the plurality of groups of first LEDs consists of three, five or six groups of the first LEDs.

6. The high bay light fixture of claim 1 , wherein:
the plurality of groups of first LEDs comprises at least four groups of the first LEDs,
first subsets of each of the at least four groups of the first LEDs are arranged along arcs of a first radius relative to the vertical axis,
second subsets of each of the at least four groups of the first LEDs are arranged along arcs of a second radius relative to the vertical axis, and
the second radius is different from the first radius.

7. The high bay light fixture of claim 1 , wherein:
the plurality of second LEDs comprises four groups of the second LEDs;
the plurality of upper optics comprises four upper optics, each of the four upper optics and the upper surface enclosing one of the four groups of the second LEDs, adjacent ones of the four upper optics being configured with respective gaps therebetween; and
the electronics box comprises four rectilinear sides and is oriented such that each of the four rectilinear sides faces one of the gaps between adjacent ones of the four upper optics.

8. The high bay light fixture of claim 1 , wherein the upper surface of the base forms an upward protrusion, the electronics box being coupled with the upper surface atop the protrusion.

9. The high bay light fixture of claim 1 , wherein the upper surface of the base forms a protrusion that extends upward and above a level of the upper optics, the electronics box being coupled with the upper surface atop the protrusion and extending upward.

10. The high bay light fixture of claim 1 , further comprising spiral arms integrally formed with the disc-shaped base along an outer circumference thereof, to encourage thermal dissipation.

11. The high bay light fixture of claim 10 , further comprising an outer band integrally formed with the spiral arms such that airflow apertures are defined by the base, the spiral arms and the outer band.

12. The high bay light fixture of claim 1 , wherein the at least one lower optic consists of a single lower optic.

13. The high bay light fixture of claim 1 , wherein each of the arc shaped reflectors reflects at least a portion of light emitted in an original direction from one of the groups of the first LEDs into a reflected direction that is nearer a direction of the vertical axis than the original direction.

14. The high bay light fixture of claim 13 , wherein the original direction is substantially horizontal, and the reflected direction is downward.

15. The high bay light fixture of claim 1 , wherein each of the groups of first LEDs comprises at least eight of the first LEDs.

16. The high bay light fixture of claim 15 , wherein:
each of the first LEDs of at least a first one of the groups of the first LEDs couples with a respective one of the one or more planar PCBs that provides power to the first LEDs of the first one of the groups;
at least one of the arc shaped reflectors that corresponds to the first one of the groups of the first LEDs comprises:
a proximal arc arranged at a constant first radius from the vertical axis at the plane of the respective one of the planar PCBs for the given one of the groups; and
a distal arc arranged at a constant second radius from the vertical axis at the plane of the respective one of the planar PCBs for the given one of the groups; and

an upper surface of each of the proximal and distal arcs mounts substantially flush with the respective one of the PCBs, leaving a gap between the proximal and distal arcs, wherein the first LEDs couple with the respective one of the PCBs within the gap between the proximal and distal arcs.

17. The high bay light fixture of claim 15 , wherein:
each of the groups of first LEDs comprises at least twenty of the first LEDs;
a first half of the first LEDs of each group are arranged in a first one of the one or more arcs; and
a second half of the first LEDs of each group are arranged in a second one of the one or more arcs, the first one and the second one of the arcs being characterized by different radii relative to the vertical axis.

18. The high bay light fixture of claim 17 , wherein the number

Assignees

• Abl Ip Holding Llc

Inventors

• Morello Jared Timothy
• Wu Yinan
• Moon Justin Thomas
• Moore Bruce Allen
• Pearson Jamie Jo

Classifications

• F21V23/02

  the elements being transformers, impedances {or power supply units, e.g. a transformer with a rectifier} · CPC title

• F21V13/02 Primary

  Combinations of only two kinds of elements · CPC title

• F21Y2105/003

  Mechanical Engineering · mapped topic

• F21V29/78 Primary

  with helically or spirally arranged fins or blades · CPC title

• F21S8/04

  intended only for mounting on a ceiling or the like overhead structures (F21S8/02 takes precedence; {details of ceiling bases F21V21/03}) · CPC title