Illuminated sign and method for design
First Claim
1. An illuminated sign designed to be viewed from a horizontal line of sight of an observer, the light box comprising:
- a frame having a width;
a partially transparent face supported thereon;
a single or plurality of lengthwise sections of luminous tubing mounted in the frame and having a tubing inside radius (r) and an inner surface having a reflector-closest edge, and;
a single or plurality of concavely-curved, reflective channels each having an angle of wrap (β
) and a concave surface having a tubing-closest edge positioned at a distance (d) from the tubing inner surface reflector-closest edge;
a reflective channel having a substantially semi-cylindrical shape with a radius of curvature (R) wherein the improvement comprises each said reflective channel having an actual angle of wrap (β
a) approximately equal to about 70% to about 150% of a calculated value for β
c which solves an equation consisting of;
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Accused Products
Abstract
An illuminated sign designed to be viewed from a horizontal line of sight of an observer, the sign comprising: a frame, a partially transparent face thereon, tubing mounted therein and having an inside radius (r), and a single or plurality of concavely-curved, reflective channels each being substantially semi-cylindrical and having a radius (R), and positioned at a distance (d) from the luminous tubing; wherein the improvement comprises each channel having an angle of wrap (β) approximately equal to about 70% to about 150% of the value that solves the equation
The method of designing such a sign comprises selecting the illuminated tubing with inside radius (r), determining the distance (d) between the tubing and the reflective channel, selecting the substantially semi-cylindrical reflective channel radius (R) and designing the angle of wrap (β) as defined above.
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Citations
10 Claims
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1. An illuminated sign designed to be viewed from a horizontal line of sight of an observer, the light box comprising:
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a frame having a width;
a partially transparent face supported thereon;
a single or plurality of lengthwise sections of luminous tubing mounted in the frame and having a tubing inside radius (r) and an inner surface having a reflector-closest edge, and;
a single or plurality of concavely-curved, reflective channels each having an angle of wrap (β
) and a concave surface having a tubing-closest edge positioned at a distance (d) from the tubing inner surface reflector-closest edge;
a reflective channel having a substantially semi-cylindrical shape with a radius of curvature (R) wherein the improvement comprises each said reflective channel having an actual angle of wrap (β
a) approximately equal to about 70% to about 150% of a calculated value for β
c which solves an equation consisting of;
- View Dependent Claims (2, 3, 4, 5, 6, 7, 10)
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8. A method for designing an illuminated sign having a plurality of lengthwise sections of light-emitting luminous tubing and a plurality of concavely-curved reflective channels having a substantially semi-cylindrical shape with a radius of curvature (R), each channel positioned to reflect a portion of the light emitted by one of said lengthwise sections, the method comprising the steps of:
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(a) selecting the luminous tubing, said tubing having an inside radius (r) and an inner surface having a reflector-closest edge;
(b) selecting a distance (d) between the tubing inner surface reflector-closest edge and a tubing-closest edge of the reflective channel adjacent thereto;
(c) forming the reflective channels to be substantially semi-cylindrical in shape with actual angle of wrap (β
a) approximately equal to about 70% to about 150% of a value for β
c which solves an equation consisting of;
- View Dependent Claims (9)
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Specification