Linear light emitting diode (LED) lighting fixture

摘要

A light emitting diode (LED) lighting fixture having an elongated casing, an array of LEDs mounted on a printed circuit board and a holographic film element providing a near lossless optical element for redistributing the light emission patterns from adjacent ones of the LEDs into an array light emission pattern wherein the emitted light in a region of the array light emission pattern is comprised of a sum of overlapping light emission patterns of a plurality of the LEDs. The casing is divided into a lighting element compartment containing the LED printed circuit board and holographic film element and a power supply compartment containing at least one power supply, each being thermally isolated from the other.

主权项

1. A light emitting diode (LED) light fixture comprising:
an elongated unitary casing, the elongated casing comprises parallel spaced apart first and second casing walls which are interconnected with one another by a partition wall which divides the casing into a lighting element compartment and a power supply compartment, the lighting element compartment and the power supply compartment are mutually thermally isolated from one another by the partition wall; an array of LEDs mounted on a printed circuit board which is mounted within the lighting element compartment of the casing, wherein each LED of the LED array has a light emission pattern which includes a generally narrow conical emitted light distribution; a holographic film element being mounted within the lighting element compartment of the casing, the holographic film element comprises a holographic pattern for redistributing the light emission patterns from adjacent ones of the LEDs into an array light emission pattern, and the emitted light in a region of the array light emission pattern comprises a sum of overlapping light emission patterns of a plurality of the LEDs; and at least one power supply is mounted to a power supply support which is mounted within the power supply compartment of the casing, the power supply compartment is enclosed and sealed to protect the power supply from the elements.