Method of uniformly illuminating a billboard
DCFirst Claim
1. A method of illuminating visual media content on a billboard display surface using a lighting assembly that comprises a first lighting unit and a second lighting unit that each include a circuit board, a plurality of LEDs arranged on the circuit board, and a plurality of optical elements, wherein each optical element overlies a respective one of the LEDs and wherein each optical element is configured to redirect light from the respective one of the LEDs, the method comprising:
- directing light from the first lighting unit toward a portion of the billboard display surface such that the light from the first lighting unit illuminates the visual media content on the portion of the billboard display surface with an illumination level and a uniformity, wherein the portion of the billboard display surface is substantially rectangular and wherein the light is directed so that areas beyond edges of the portion of the billboard display surface receive minimum illumination; and
at the same time as directing the light from the first lighting unit, directing light from the second lighting unit toward the portion of the billboard display surface such that the light from the second lighting unit illuminates the visual media content on the portion of the billboard display surface;
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 portion of the billboard display surface to decrease while the uniformity of light impinging the portion of the billboard display surface remains substantially the same; and
wherein if one or more LEDs of the plurality of LEDs of the second lighting unit fails, remaining LEDs of the plurality of LEDs of the second lighting unit still illuminate the portion of the billboard so that the visual media content on the portion of the billboard display surface is visible.
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Accused Products
Abstract
Visual media content on a billboard display surface can be illuminated using a lighting assembly that includes a lighting unit that includes a circuit board, LEDs arranged on the circuit board, and optical elements overlying the LEDs. The method includes directing light from the lighting unit toward a portion of the billboard display surface such that the light from the lighting unit illuminates the visual media content on the portion of the billboard display surface with an illumination level and a uniformity. 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 portion of the billboard display surface to decrease while the uniformity of light impinging the portion of the billboard display surface remains substantially the same.
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Citations
28 Claims
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1. A method of illuminating visual media content on a billboard display surface using a lighting assembly that comprises a first lighting unit and a second lighting unit that each include a circuit board, a plurality of LEDs arranged on the circuit board, and a plurality of optical elements, wherein each optical element overlies a respective one of the LEDs and wherein each optical element is configured to redirect light from the respective one of the LEDs, the method comprising:
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directing light from the first lighting unit toward a portion of the billboard display surface such that the light from the first lighting unit illuminates the visual media content on the portion of the billboard display surface with an illumination level and a uniformity, wherein the portion of the billboard display surface is substantially rectangular and wherein the light is directed so that areas beyond edges of the portion of the billboard display surface receive minimum illumination; and at the same time as directing the light from the first lighting unit, directing light from the second lighting unit toward the portion of the billboard display surface such that the light from the second lighting unit illuminates the visual media content on the portion of the billboard display surface; 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 portion of the billboard display surface to decrease while the uniformity of light impinging the portion of the billboard display surface remains substantially the same; and wherein if one or more LEDs of the plurality of LEDs of the second lighting unit fails, remaining LEDs of the plurality of LEDs of the second lighting unit still illuminate the portion of the billboard so that the visual media content on the portion of the billboard display surface is visible. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of illuminating a billboard display surface using a first lighting assembly and a second lighting assembly that each include a plurality of LEDs and a plurality of optical elements, each optical element overlying a respective one of the LEDs, the billboard display surface being rectangular in shape and being divided into only a first portion and a non-overlapping second portion, the method comprising the steps of:
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directing light from the first lighting assembly toward the first portion of the billboard display surface such that the light from the first lighting assembly is directed across the first portion of the billboard display surface; and at the same time, directing light from the second lighting assembly toward the second portion of the billboard display surface such that the light from the second lighting assembly is directed across the second portion of the billboard display surface; wherein the light from the first lighting assembly and from the second lighting assembly is directed so that areas beyond edges of the billboard display surface receive minimum illumination; wherein when all LEDs of the first lighting assembly are operating, the entire first portion of the billboard display surface is illuminated with an illumination level and a uniformity, and wherein failure of one or more LEDs of the first lighting assembly will cause the illumination level of light impinging the first portion of the billboard display surface to decrease while the uniformity of light impinging the first portion of the billboard display surface remains substantially the same; and wherein when all LEDs of the second lighting assembly are operating, the entire second portion of the billboard display surface is illuminated with an illumination level and a uniformity, and wherein failure of one or more LEDs of the second lighting assembly will cause the illumination level of light impinging the second portion of the billboard display surface to decrease while the uniformity of light impinging the second portion of the billboard display surface remains substantially the same. - View Dependent Claims (18, 19, 20, 21)
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22. A method of illuminating visual media content on a billboard display surface using a first lighting assembly that comprises a first lighting unit, a second lighting unit and a third lighting unit and a second lighting assembly that includes a fourth lighting unit, a fifth lighting unit, and a sixth lighting unit, wherein lighting unit of the first and second lighting assembly includes a circuit board, a plurality of LEDs arranged on the circuit board, and a plurality of optical elements, wherein each optical element overlies a respective one of the LEDs and wherein each optical element is configured to redirect light from the respective one of the LEDs, the method comprising:
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directing light from the first lighting unit toward a first portion of the billboard display surface such that the light from the first lighting unit illuminates the visual media content on the first portion of the billboard display surface with an illumination level and a uniformity; at the same time as directing the light from the first lighting unit, directing light from the second lighting unit toward the first portion of the billboard display surface such that the light from the second lighting unit illuminates the visual media content on the first portion of the billboard display surface; at the same time as directing the light from the first and second lighting units, directing light from the third lighting unit toward the first portion of the billboard display surface such that the light from the third lighting unit illuminates the visual media content on the first portion of the billboard display surface; at the same time as directing the light from the first, second and third lighting units, directing light from the fourth lighting unit toward a second portion of the billboard display surface such that the light from the fourth lighting unit is directed across the second portion of the billboard display surface; at the same time, directing light from the fifth lighting unit toward the second portion of the billboard display surface such that the light from the fifth lighting unit is directed across the second portion of the billboard display surface; and at the same time, directing light from the sixth lighting unit toward the second portion of the billboard display surface such that the light from the sixth lighting unit is directed across the second portion of the billboard display surface; wherein the first portion of the billboard display surface and the second portion of the billboard display surface extend from a left edge of the billboard display surface to a right edge of the billboard display surface and from a top edge to a bottom edge of the billboard display surface so that all of the visual media content on the billboard display surface is illuminated; wherein a distance along the top edge of the billboard display surface from the left edge to the right edge is 48 feet and wherein a distance along the right edge of the billboard display surface from the top edge to the bottom edge is 14 feet; and wherein the optical elements are configured so that failure of one or more LEDs of the first lighting assembly will cause the illumination level of light impinging the first portion of the billboard display surface to decrease while the uniformity of light impinging the first portion of the billboard display surface remains substantially the same. - View Dependent Claims (23, 24)
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25. A method of illuminating a billboard display surface using a first lighting assembly and a second lighting assembly that each include a plurality of LEDs and a plurality of optical elements, each optical element overlying a respective one of the LEDs, the billboard display surface having a dimension of 14 feet by 48 feet and being divided into only a first portion and a non-overlapping second portion, the method comprising the steps of:
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directing light from the first lighting assembly toward the first portion of the billboard display surface such that the light from the first lighting assembly is directed across the first portion of the billboard display surface; and at the same time, directing light from the second lighting assembly toward the second portion of the billboard display surface such that the light from the second lighting assembly is directed across the second portion of the billboard display surface; wherein when all LEDs of the first lighting assembly are operating, the entire first portion of the billboard display surface is illuminated with an illumination level and a uniformity, and wherein failure of one or more LEDs of the first lighting assembly will cause the illumination level of light impinging the first portion of the billboard display surface to decrease while the uniformity of light impinging the first portion of the billboard display surface remains substantially the same; and wherein when all LEDs of the second lighting assembly are operating, the entire second portion of the billboard display surface is illuminated with an illumination level and a uniformity, and wherein failure of one or more LEDs of the second lighting assembly will cause the illumination level of light impinging the second portion of the billboard display surface to decrease while the uniformity of light impinging the second portion of the billboard display surface remains substantially the same. - View Dependent Claims (26, 27, 28)
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Specification