Sign system with field changeable screen size and message

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. The modules are arrangeable in a rectangular matrix on a support structure without a sign screen enclosure and with the screen portions of the modules defining a sign screen. The screen size reconfigurable by adding or subtracting display modules. The modules in communication with the sign controller to receive bit map data for forming, in conjunction with a plurality of other sign modules comprising a sign screen, and desired message.