Abstract: A three-message sign having internal light source has an array of side-by-side triangular sign elements. Each of the triangular sign elements has three transparent display surfaces with three apices joining the three transparent display surfaces into the triangular sign element. The transparent display surfaces permit the array to display a discrete message when the array of triangular sign elements is simultaneously rotated to present the display surfaces for a single message. Each of the side-by-side triangular sign elements has a internal light source extending from at least one end of the triangular sign element across the transparent display surfaces of the triangular sign element. Transparent and opposed U-shaped holders are placed along edges of the transparent display surfaces, each transparent and opposed U-shaped element defining an indentation for trapping the edges of translucent message display strips.

Abstract: An illuminated three message sign is provided with improved illumination from the exterior of the vanes at the apices away from the sign surface exposed for message display. The sign has a message display side and an array of triangular rotating sign message displays. Each of the three sides of the triangular message displays in combination a message with corresponding sides of the other sign message displays. When the array of triangular sign message displays has the message surfaces of one of the arrays parallel to the display side, the sequential message is displayed. The apices of the sign message displays are each provided with cylindrical lenses. These cylindrical lenses register to slit light sources. By the expedient of providing a slit light source for each rotating message display, sequential illumination is provided as each message of the array rotates for viewer presentation.

Abstract: A sign providing for the serial display of three discreet messages is disclosed. The disclosed sign has an array of discrete vertical three sided sign elements provided with an improved sign element mounts and bearings, improved detachable face plates for the display of the three sign messages, and an improved sign element drive for simultaneous rotation of the sign element array in 120.degree. increments for sequential display of the three discrete messages of the sign.