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US 9,541,246 B2Granted
Aerodynamic LED light fixture
AssigneeCree, Inc.
InventorsAlan J. Ruud, Kurt S. Wilcox, Steven R. Walczak
Life of this patent
Estimating the term…
Abstract
An LED light fixture having a light-emitting region and a perimetrical structure therearound. The light-emitting region includes at least one LED-array module supported by an LED heat sink open for air/water-flow. The perimetrical structure has first and second opposite substantially-aligned edge-adjacent portions each extending along the light-emitting region and meeting each other at a perimetrical edge. The first and second edge-adjacent portions converge toward each other at positions progressively closer to the perimetrical edge to form aerodynamic-drag-reducing cross-sectional profiles transverse to the fixture plane and extending in substantially all fixture-plane directions from the intersection of its two major principal axes.
Claims20
An LED light fixture comprising:
- two major principal axes in a fixture plane, the dimensions of the fixture in planes parallel to its third principal axis being substantially smaller than the largest dimensions parallel to the fixture plane;
- a first outer side having a first central portion;
- an opposite second outer side having a second central portion substantially aligned with the first central portion and encompassing a light-emitting region open to air and water flow and including at least one LED-array module supported by an LED heat sink;
- and
- a perimetrical structure forming a closed chamber which fully surrounds the light-emitting region and encloses at least one electronic LED driver, the perimetrical structure having first and second edge-adjacent portions meeting at a perimetrical edge and each having a boundary with the respective one of the first and second central portions, the first and second edge-adjacent portions converging toward each other at positions progressively closer to the perimetrical edge, thereby forming aerodynamic-drag-reducing cross-sectional profiles transverse to the fixture plane and extending in substantially all fixture-plane directions from the intersection of its two major principal axes.
2 more elements
An LED light fixture comprising:
- a light-emitting region open for air and water flow and including at least one LED-array module supported by an LED heat sink;
- and
- a perimetrical structure forming a closed chamber which fully surrounds the light-emitting region and encloses at least one electronic LED driver, the perimetrical structure having first and second opposite substantially-aligned edge-adjacent portions each having a boundary with the light-emitting region and meeting each other at a perimetrical edge, the first and second edge-adjacent portions converging toward each other at positions progressively closer to the perimetrical edge to form aerodynamic-drag-reducing cross-sectional profiles transverse to the fixture plane and extending in substantially all fixture-plane directions from the intersection of its two major principal axes.
An LED light fixture comprising:
- a light-emitting region open for air and water flow and including at least one LED-array module supported by an LED heat sink;
- and
- a perimetrical structure forming a closed chamber which fully surrounds the light-emitting region and encloses at least one electronic LED driver, the perimetrical structure having first and second opposite substantially-aligned edge-adjacent portions each having a boundary with the light-emitting region and meeting each other at a perimetrical edge, the perimetrical structure permitting air and water flow to and from the LED heat sink, the first and second edge-adjacent portions converging toward each other at positions progressively closer to the perimetrical edge to form aerodynamic-drag-reducing cross-sectional profiles transverse to the fixture plane and extending in substantially all fixture-plane directions from the intersection of its two major principal axes.
A pole-mounted light fixture comprising:
- two major principal axes in a fixture plane, the dimensions of the fixture in planes parallel to its third principal axis being substantially smaller than the largest dimensions parallel to the fixture plane;
- a first outer side comprising a first central portion and a first edge-adjacent portion;
- an opposite second outer side comprising (a) a second central portion substantially aligned with the first central portion and encompassing a light-emitting region which is open for air and water flow and includes at least one LED-array module supported by an LED heat sink, and (b) a second edge-adjacent portion having a boundary with the second central portion, the boundary defining a reference plane;
- at least one electronic LED driver enclosed within a closed chamber which fully surrounds the light-emitting region and is formed by the first and second edge-adjacent portions each having a boundary with the light-emitting region and converging toward each other at positions progressively closer to the perimetrical edge to form aerodynamic-drag-reducing cross-sectional profiles transverse to the fixture plane and extending in substantially all fixture-plane directions from the intersection of its two major principal axes;
- and
- the greatest distance perpendicular to the fixture plane between the first central portion and the reference plane is no more than 50% greater than the smallest distance therebetween.
3 more elements
Dependencies are inferred from the claim text.