Lighting fixture having enhanced light distribution performance

摘要

An LED lighting fixture with a heat sink, LED arrays on angled facets, a reflector dish, and a diffuser lens are disclosed. The LED arrays are mounted at an angle on sloped facets, and the reflector intercepts a portion of light from the LED arrays, and redirects the intercepted light downward, resulting in a focused and collumnated light beam. Very little light is allowed to be projected upward above the light fixture, and less light is dispersed to the side.

主权项

1. An LED light fixture with a top side and a bottom side, comprising:
a light fixture body comprised of a heat sink ring with outwardly radiating fins; an attachment means for attaching said light fixture body to a mounting surface; said fixture body with an inside surface of the heat sink ring comprised of a number of sloped planar facets, for attachment of LED arrays to said facets, the facets sloped to direct light down from said fixture when said fixture is mounted overhead; a plurality of LED arrays attached to said inside surface on said sloped planar facets; a reflector dish attached to said fixture body, configured to direct light from said LED arrays toward a diffuser lens attached to the lower side of said heat sink ring, with said reflector dish mounted to intercept, reflect and redirect approximately 25-35% of light from said LED arrays; and a diffuser lens attached to said light fixture below said LED arrays, for diffusing light from said LED arrays and from said reflector dish; in which said LED arrays have a light spread of approximately 60 degrees above the perpendicular plane of said LED array, and 60 degrees below the perpendicular plane of said LED array, with said reflector positioned to intercept, reflect and redirect approximately 25-35% of light from said LED arrays, by reflecting and redirecting most of the light from the 60 degrees of said LED array light spread above the perpendicular plane of the LED array.