LED back light assembly

Details LED back light assembly LED back light assembly

1996-11-25

1998-03-17

Quach, Y My

Illumination

Illuminated scale or dial

Edge illuminated modifier or light rod/pipe

362 26, 362 31, F21V 800

Patent

active

057278628

ABSTRACT:
A LED back light assembly including a light guide and a circuit board with light emitting diodes mounted within a base frame and covered by an opaque diffuser plate, wherein the light guide has a frosted top face, a frosted bottom face, a corrugated bright front face facing the light emitting diodes, two end flanges respectively coupled to upright pins at two opposite ends of the base frame, and two transverse bevel faces at two opposite ends below said end flanges adapted for guiding back diffused light rays, the corrugated bright front face defining a plurality of longitudinally arranged furrows, which receive the light emitting diodes of the circuit board respectively.

REFERENCES:
patent: 2623313 (1952-12-01), Fuchs
patent: 5276591 (1994-01-01), Hegarty
patent: 5280415 (1994-01-01), Barnette

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