Patent ID: 6464373
Filing Date: 2002-10-15
Classification: F21S,F21V,F21W,F21Y,H01L

Abstract:
A light emitting diode warning light system for projecting light at a predetermined angle in a long life, cost effective manner comprising, in combination:a circular plate having an enlarged exterior periphery and a central circular attachment zone of a reduced circumference, the plate having an upper surface with a plurality of mounting areas thereon, the mounting areas including a plurality of mounting areas in a circular exterior array adjacent to the exterior periphery and a circular interior array around the circular attachment zone and a plurality of circular intermediate arrays there between; a plurality of light emitting diodes having light emitting upper areas and with lower areas formed with electrical leads for illuminating the upper areas with intermediate securement means there between, each of the light emitting diodes being secured on the plate; a reflector in a truncated cone-shaped configuration over essentially the entire surface of the reflector with a central axis perpendicular to the plate and a circular smaller end of a reduced circumference positioned within the circular attachment zone of the circular plate and with an circular upper end of an enlarged circumference at least as great as that of the plate positioned above the plate and parallel therewith and with an intermediate surface there between, the intermediate surface of the reflector having continually diminishing circumference from its upper end to its lower end and located entirely above the light emitting diodes and with the reflector and plate having a common axis there through and with the surface at an angle of between about 22 to 50 degrees from the common axis; and means to apply an electrical current to the anodes and cathodes of the light emitting diodes whereby illumination from the upper ends of the light emitting diodes will project outwardly and also reflect from the surface of the reflector to disseminate an annular beam of the reflected light in all directions upwardly at between âˆ’45 and +70 degrees from the plane of the plate with a horizontal divergence of between about 2 and 120 degrees, and a vertical divergence of between 2 and 46 degrees, preferably 10 degrees.