Signboard, more particularly traffic sign

Claim 1

A REFLECTING SIGNBOARD FOR REFLECTING LIGHT INCIDENT THEREON INCLUDING, IN COMBINATION, A PLURALITY OF INDIVIDUAL AND RECTANGULARLY SHAPED REFLECTOR UNITS ARRANGED IN SIDE BY SIDE RELATIONSHIP, SAID UNITS BEING UNCONNECTED AND BEING POSITIONED IN JUXTAPOSITION TO FORM A SUBSTANTIALLY CONTINUOUS REFLECTIVE SURFACE, EACH OF SAID REFLECTOR UNITS HAVING A FRONT TRANSPARENT SHEET WITH A PLURALITY OF TRIPLE REFLECTOR SURFACES ON THE REAR SIDE THEREOF, EACH OF SAID REFLECTOR UNITS ALSO INCLUDING AIR AND WATER TIGHT BACKING MEANS FOR HERMETICALLY SEALING SAID REFLECTOR SURFACES FROM THE ATMOSPHERE, A TRANSPARENT COVER MEMBER AND A BACK MEMBER, SAID REFLECTOR UNITS BEING SANDWICHED BETWEEN SAID MEMBERS WITH THE FRONT SHEET OF EACH UNIT BEING IN JUXTAPOSITION TO SAID COVER MEMBERS, A FRAME ABOUT THE EDGES OF SAID MEMBERS AND HOLDING THE MEMBERS TOGETHER WITH THE UNITS SANDWICHED THEREBETWEEN, AND MEANS DEFINING INDICIA IN FRONT OF SAID REFLECTOR SURFACES AND IN JUXTAPOSITION TO THE FACE OF THE COVER MEMBER; WHEREBY SIGNS OF VARIOUS SIZES MAY BE FORMED BY SELECTING A PLURALITY OF UNITS TO FORM THE SIGN OF THE DESIRED SIZE, SELECTING MEMBERS OF SAID SIZE, SANDWICHING THE UNITS BETWEEN THE MEMBERS, AND AFFIXING SAID FRAME ABOUT SAID MEMBERS TO HOLD THE SANDWICHED ASSEMBLY TOGETHER.