Fine pitch full color variable message sign

摘要

A fine pitch full color variable message sign has a housing with a front face. A number of printed circuit boards are arranged along the front face of the housing. A number of LEDs are attached to each of the printed circuit boards. The LEDs are grouped into a number of pixels, each pixel has three LEDs arranged in a line. A mask covers the printed circuit boards. The mask has a number of elliptical apertures. A glazing may cover the printed circuit boards and is between the printed circuit boards and the mask. Each pixel has three LEDs; red, blue, and green. The LEDs that form a pixel are arranged in a line. The elliptical apertures are aligned with each pixel.

主权项

1. A fine pitch full color variable message sign, comprising:
a mask having a plurality of openings, wherein the plurality of openings have a major axis that is not equal to a minor axis; a glazing adjacent to the mask and located between the mask and a plurality of printed circuit boards; the plurality of printed circuit boards adjacent to the glazing, each of the plurality of printed circuit boards having a plurality of pixels, wherein each pixel includes a red LED, a green LED, and a blue LED, wherein the red LED, the green LED, and the blue LED of one of the plurality of pixels are arranged along a line, wherein each pixel is aligned at a different one of the plurality of openings such that the red LED, the green LED, and the blue LED of the same pixel are aligned to the same opening; a structural return having a first end attached to the mask; one or more pins having a first pin end attached to the mask; and a housing attached to the mask; wherein:
the glazing obstructs access to the plurality of printed circuit boards from a front of the sign by covering the plurality of printed circuit boards;each of the one or more pins extend from the mask and through the glazing; andthe one or more pins have a second pin end attached to at least one of the plurality of printed circuit boards.