Lighting Assembly with Multiple Lighting Units

Patent metadata

Field	Value
Publication number	US-2017130931-A1
Application number	US-201715413306-A
Country	US
Kind code	A1
Filing date	Jan 23, 2017
Priority date	Jul 30, 2012
Publication date	May 11, 2017
Grant date	—

Abstract

A lighting assembly includes an assembly body. A first lighting unit is attached to the assembly body. The first lighting unit includes a number of light emitting diodes (LEDs) and optical elements arranged over the LEDs such that each optical element overlies only one associated LED. The first lighting unit is configured to illuminate a substantially rectangular region. A second lighting unit is attached to the assembly body and spaced from the first lighting unit. The second lighting unit includes a number of LEDs and optical elements arranged over the plurality of LEDs such that each optical element overlies only one associated LED. The lighting assembly is configured to illuminate the region so that the region can be illuminated without additional lighting and so that areas beyond edges of the region of the substantially rectangular region receive minimum illumination.

First claim

1 . A lighting assembly comprising:
an assembly body; a first lighting unit attached to the assembly body, the first lighting unit including a first plurality of light emitting diodes (LEDs) and a first plurality of optical elements arranged over the first plurality of LEDs such that each optical element overlies only one associated LED, wherein the first lighting unit is configured to illuminate a substantially rectangular region; and a second lighting unit attached to the assembly body and spaced from the first lighting unit, the second lighting unit including a second plurality of LEDs and a second plurality of optical elements arranged over the plurality of LEDs such that each optical element overlies only one associated LED, wherein the second lighting unit is configured to illuminate the substantially rectangular region so that the lighting assembly can illuminate substantially all of the substantially rectangular region so that the region can be illuminated without additional lighting and so that areas beyond edges of the substantially rectangular region receive minimum illumination; wherein the optical elements are configured so that light emitted from the first and second lighting units illuminates the substantially rectangular area in a manner that does not create hot spots or result in dead spots on the area regardless of whether all of the LEDs of the first and second pluralities of LEDs are functional or only some of the LEDs of the first and second pluralities of LEDs.

2 . The lighting assembly of claim 1 , wherein the optical elements are configured so that failure of one or more of the LEDs will cause an illumination level of light emitted from the lighting assembly to decrease while a uniformity of the light emitted from the lighting assembly remains substantially the same.

3 . The lighting assembly of claim 2 , wherein each optical element of the plurality of optical elements of the first and the second lighting units comprises a first part, a second part, and a third part, wherein the first part comprises a first curved surface, wherein the second part comprises a second curved surface that intersects with the first curved surface at a region between the first part and the second part, wherein the first part and the second part each have a peak that is spaced from the region between the first part and the second part, and wherein the third part extends beyond the region between the first part and the second part in a direction away from the associated LED.

4 . The lighting assembly of claim 3 , wherein the substantially rectangular region has a length of twenty-four feet.

5 . The lighting assembly of claim 3 , wherein the LEDs of the first plurality of LEDs are arranged in rows on a substrate and extend along a longitudinal axis in a plane of a first surface of the substrate, the lighting assembly further comprising a heat sink thermally coupled to a second surface of the substrate, the second surface opposite the first surface, the heat sink comprising a first section substantially parallel to the first surface of the substrate so that each and every LED of the first plurality of LEDs is separated from the heat sink by the substrate, the heat sink further comprising a plurality of fins extending away from the first section and substantially perpendicular thereto, each fin extending along an axis in the plane of the first surface of the substrate, the axis for each fin being substantially perpendicular to the longitudinal axis of the first surface of the substrate, wherein the fins are substantially flat.

6 . The lighting assembly of claim 5 , wherein the substantially rectangular region has a length of twenty-four feet.

7 . The lighting assembly of claim 2 , wherein the substantially rectangular region has a length of twenty-four feet.

8 . The lighting assembly of claim 7 , wherein the LEDs of the first plurality of LEDs are arranged in rows on a substrate and extend along a longitudinal axis in a plane of a first surface of the substrate, the lighting assembly further comprising a heat sink thermally coupled to a second surface of the substrate, the second surface opposite the first surface, the heat sink comprising a first section substantially parallel to the first surface of the substrate so that each and every LED of the first plurality of LEDs is separated from the heat sink by the substrate, the heat sink further comprising a plurality of fins extending away from the first section and substantially perpendicular thereto, each fin extending along an axis in the plane of the first surface of the substrate, the axis for each fin being substantially perpendicular to the longitudinal axis of the first surface of the substrate, wherein the fins are substantially flat.

9 . The lighting assembly of claim 2 , wherein the LEDs of the first plurality of LEDs are arranged in rows on a substrate and extend along a longitudinal axis in a plane of a first surface of the substrate, the lighting assembly further comprising a heat sink thermally coupled to a second surface of the substrate, the second surface opposite the first surface, the heat sink comprising a first section substantially parallel to the first surface of the substrate so that each and every LED of the first plurality of LEDs is separated from the heat sink by the substrate, the heat sink further comprising a plurality of fins extending away from the first section and substantially perpendicular thereto, each fin extending along an axis in the plane of the first surface of the substrate, the axis for each fin being substantially perpendicular to the longitudinal axis of the first surface of the substrate, wherein the fins are substantially flat.

10 . The lighting assembly of claim 1 , wherein each optical element of the plurality of optical elements of the first and the second lighting units comprises a first part, a second part, and a third part, wherein the first part comprises a first curved surface, wherein the second part comprises a second curved surface that intersects with the first curved surface at a region between the first part and the second part, wherein the first part and the second part each have a peak that is spaced from the region between the first part and the second part, and wherein the third part extends beyond the region between the first part and the second part in a direction away from the associated LED.

11 . The lighting assembly of claim 10 , wherein the substantially rectangular region has a length of twenty-four feet.

12 . The lighting assembly of claim 11 , wherein the LEDs of the first plurality of LEDs are arranged in rows on a substrate and extend along a longitudinal axis in a plane of a first surface of the substrate, the lighting assembly further comprising a heat sink thermally coupled to a second surface of the substrate, the second surface opposite the first surface, the heat sink comprising a first section substantially parallel to the first surface of the substrate so that each and every LED of the first plurality of LEDs is separated from the heat sink by the substrate, the heat sink further comprising a plurality of fins extending away from the first section and substantially perpendicular thereto, each fin extending along an axis in the plane of the first surface of the substrate, the axis for each fin being substantially perpendicular to the longitudinal axis of the first surface of the substrate, wherein the fins are substantially flat.

13 . The lighting assembly of claim 10 , wherein the LEDs of the first plurality of LEDs are arranged in rows on a substrate and extend along a longitudinal axis in a plane of a first surface of the substrate, th

Assignees

• Ultravision Tech Llc

Inventors

• Auyeung David Siucheong
• Hall William Y
• Magarill Simon

Classifications

• F21V21/26

  Pivoted arms · CPC title

• G02B19/0066

  in the form of an LED array · CPC title

• G09F2013/222

  with LEDs · CPC title

• F21W2131/40

  Lighting for industrial, commercial, recreational or military use · CPC title

• F21Y2115/10

  Light-emitting diodes [LED] · CPC title