Lighting assembly with multiple lighting units
DCFirst 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.
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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.
218 Citations
29 Claims
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1. A lighting assembly comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A lighting assembly comprising:
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a first lighting unit that includes a first circuit board, a first plurality of LEDs arranged on the first circuit board, and a first plurality of optical elements; and a second lighting unit that includes a second circuit board, a second plurality of LEDs arranged on the second circuit board, and a second plurality of optical elements; wherein each optical element of the first plurality of optical elements and the second plurality of optical elements overlies a respective one of the LEDs, each optical element being configured to redirect light from the respective one of the LEDs; wherein the lighting assembly is configured to simultaneously direct light from the first lighting unit and the second lighting unit toward a substantially rectangular surface; wherein the lighting assembly is configured so that the light is directed so that areas beyond edges of the substantially rectangular surface receive minimum illumination from the lighting assembly; wherein the lighting assembly is configured to direct the light toward the substantially rectangular surface such that the light from the first lighting unit and from the second lighting unit illuminates substantially all of the substantially rectangular surface with an illumination level and a uniformity; and wherein the optical elements are configured so that failure of one or more LEDs of the lighting assembly will cause the illumination level of light impinging the substantially rectangular surface to decrease while the uniformity of light impinging the substantially rectangular surface remains substantially the same. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28)
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29. A lighting assembly designed to illuminate a substantially rectangular surface having visual media content located thereon, the substantially rectangular surface being at least a portion of a display surface of a billboard, the lighting assembly comprising:
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a first lighting unit that includes a first circuit board, a first plurality of LEDs arranged on the first circuit board, and a first plurality of optical elements; and a second lighting unit that includes a second circuit board, a second plurality of LEDs arranged on the second circuit board, and a second plurality of optical elements; wherein each optical element of the first plurality of optical elements and the second plurality of optical elements overlies a respective one of the LEDs, each optical element being configured to redirect light from the respective one of the LEDs; wherein the lighting assembly is configured to simultaneously direct light from the first lighting unit and the second lighting unit toward the substantially rectangular surface so that the light is directed so that areas beyond edges of the substantially rectangular surface receive minimum illumination from the lighting assembly; wherein the lighting assembly is configured so that the light from the first lighting unit and the second lighting unit has a substantially rectangular wavefront and illuminates the visual media content of the substantially rectangular surface so that the visual media content on the substantially rectangular surface is visible even without additional lighting; wherein the lighting assembly is configured so that if one or more LEDs of the first plurality or the second plurality of LEDs fails, remaining LEDs of the first plurality or the second plurality of LEDs still illuminate the substantially rectangular surface so that the visual media content on the substantially rectangular surface remains visible even without additional lighting; wherein the lighting assembly is configured to direct the light toward the substantially rectangular surface such that the light from the first lighting unit and the second lighting unit illuminates the visual media content on the substantially rectangular surface with an illumination level and a uniformity; wherein the optical elements are configured so that failure of one or more LEDs of the lighting assembly will cause the illumination level of light impinging the substantially rectangular surface to decrease while the uniformity of light impinging the substantially rectangular surface remains substantially the same; wherein a distance along a top edge of the portion of the display surface from a left edge to a right edge is twenty-four feet and wherein a distance along the right edge of the display surface from the top edge to a bottom edge is fourteen feet; and wherein each optical element of the first plurality and the second plurality of optical elements 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.
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Specification