Abstract: Preferred embodiments of the present invention provide a sign system for creating extremely lightweight, reconfigurable, and changeable signs suitable for outdoor use adjacent to roadways. The system provides adjustable message screen size, electronically changeable messages and alphanumeric adjustable character size of at least 6 inches in height. The system comprises a sign controller and a plurality of interchangeable modules each sealed to be weather resistant. Each module having a display side with a rectangular screen portion, the screen portion having transparent portions with pixel elements positioned behind said transparent portions and within said module. Each module has the pixels arranged in a first matrix pattern and sufficient in number to provide alphanumeric characters and portions of characters of adjustable size of at least 6 inches. Each module having a bit map memory and being individually addressable with respect to other modules.

Abstract: In a preferred embodiment of the invention, an outdoor sign has a plurality of display modules, each hermetically sealed, for forming a hermetically sealed large sign screen. Each module is preferably formed of a lightweight plastic enclosure with an open interior containing circuitry and light emitting diodes. Means for minimizing deflection of the front panel are incorporated into the enclosure. One such means includes a single restrictive vent for pressure equalization to minimize deflection of the face portion. The means also includes an internal diaphragm to maintain the integrity of the hermetic seal. A feature and advantage of the invention is that moisture and other containments are effectively precluded from entry into the chamber containing the circuitry and LED's of the display sign.

Abstract: Preferred embodiments of the present invention provide a sign system for creating extremely lightweight, reconfigurable, and changeable signs suitable for outdoor use adjacent to roadways. The system provides adjustable message screen size, electronically changeable messages and alphanumeric adjustable character size of at least 6 inches in height. The system comprises a sign controller and a plurality of interchangeable modules each sealed to be weather resistant. Each module having a display side with a rectangular screen portion, the screen portion having transparent portions with pixel elements positioned behind the transparent portions and within the module. Each module has the pixels arranged in a first matrix pattern and sufficient in number to provide alphanumeric characters and portions of characters of adjustable size of at least 6 inches. Each module having a bit map memory and being individually addressable with respect to other modules.