LED traffic light structure

Details LED traffic light structure LED traffic light structure

2007-10-16

2007-10-16

Sawhney, Hargobind S. (Department: 2885)

Illumination

Plural light sources

With modifier

C362S268000, C340S815450

Reexamination Certificate

active

11258537

ABSTRACT:
A traffic light structure includes an LED light source having a circuit board and multiple LEDs securely mounted on the circuit board, a front cover having a first incidence surface provided with multiple lenses each with rectangular lenses and a first emergence surface and an inner cover sandwiched between the front cover and the LED light source and having a second incidence surface and a second emergence surface provided with columns symmetrically arranged relative to a central axis on the second emergence surface. Light of the LEDs scattered and reflected by the inner cover and the front cover is inclined downward to a horizontal axis of the front cover.

REFERENCES:
patent: 5833355 (1998-11-01), You et al.
patent: 6509840 (2003-01-01), Martineau
patent: 6599002 (2003-07-01), Hsieh et al.
patent: 6717526 (2004-04-01), Martineau et al.
patent: 6731222 (2004-05-01), Martineau
patent: 6955449 (2005-10-01), Martineau

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