LED traffic light with individual LED reflectors
AssigneeCooper Technologies Company
InventorIrving Schaffer
Life of this patent
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Abstract
An LED signal module includes a casing defining a cavity. Within the cavity is an array of LEDs. Individual reflectors are placed around individual LEDs of the array. The individual reflectors are structured to receive direct light from their associated individual LEDs and substantially to prevent direct light from their associated individual LEDs from impinging upon the individual reflectors of other LEDs of the array of LEDs. Also included, and covering the cavity, is a lens shaped to direct the output luminance of the LEDs below a horizontal axis of the module.
Claims17
A signal light module comprising:
- a casing defining a cavity;
- an array of LEDs positioned in the cavity;
- individual reflectors positioned around individual LEDs of the array of LEDs, the individual reflectors being structured to receive direct light from their associated individual LEDs and substantially to prevent direct light from their associated individual LEDs from impinging upon the individual reflectors of other LEDs of the array of LEDs;
- and
- a lens covering the cavity and shaped to concentrate the output luminance of the LEDs below a horizontal axis of the module.
A method of making a signal light module, the method comprising:
- positioning an array of LEDs in a casing;
- positioning individual reflectors around individual LEDs of the array, the individual reflectors being structured to receive direct light from their associated individual LEDs and substantially to prevent direct light from their associated individual LEDs from impinging upon the individual reflectors of other LEDs of the array of LEDs;
- and
- covering the cavity with a lens, the lens being shaped to produce a signal concentrated below a horizontal plane in which the signal module lies and providing generally uniform luminosity when viewed from below the horizontal plane.
Dependencies are inferred from the claim text.