US 5,475,361 AGranted

Strobe warning light

AssigneeWheelock, Inc.

InventorsJohn W. Curran, Luy Nguyen, Joseph Kosich

Life of this patent

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Abstract

The reflector of a strobe warning light for mounting on a wall has reflective surfaces for enhancing the amount of light projected into a sector defined by a horizontal reference plane and a vertical reference plane that intersect at the lamp axis, the lamp being oriented horizontally. Two wing-like reflective surfaces reflect light into a zone of the sector from 10 degrees to 40 degrees from the horizontal reference plane. Two other wing-like reflectors that adjoin the first two reflect light generally parallel to the lamp axis in opposite directions to increase the light intensity as the light is viewed from the sides. The wing-like reflective surfaces are located in diagonally opposite quadrants with respect to the horizontal reference plane and a plane at the lamp centerline perpendicular to the lamp axis, thereby leaving openings in the remaining two quadrants. A concave reflective surface behind the vertical reference plane reflects light away from the wall. A lens over the lamp has a concave reflective surface that reflects light generally downwardly to enhance the light output in the 70 to 90 degree range from the horizontal reference plane.

Claims16

Dependent claims

A strobe warning light adapted to project light predominantly into a sector defined by mutually perpendicular first and second reference planes intersecting at a line L, comprising an elongated strobe lamp having a longitudinal axis, a lamp support supporting the lamp with its axis coincident with the line L and centered on a third reference plane that is perpendicular to the first and second reference planes, and a reflector on the support that includes a first reflective surface that is positioned exclusively in a first quadrant defined by the first and third reference planes and is exclusively on the same side of the second reference plane as the sector and that is configured and oriented to reflect light from the lamp into the sector predominantly in a range of angles of from about 10 degrees to about 40 degrees with respect to the first reference plane, at least a portion of said first reflective surface being at a height greater than the top of the lamp, with respect to the second reference plane, at least some light reflected by the first reflective surface being emitted from the strobe warning light through a second quadrant, said second quadrant being on the same sector as the first quadrant and defined by the first and third reference planes.

Dependencies are inferred from the claim text.