Portable interface unit for a head-up display system
FIG. 1 is a reduced top perspective view of the portable interface unit for a head-up display system in an open position showing our new design; 
     FIG. 2 is a first end view of the portable interface unit of FIG. 1; 
     FIG. 3 is a top view of the portable interface unit of FIG. 1; 
     FIG. 4 is a first side view of the portable interface unit of FIG. 1; 
     FIG. 5 is a second side view of the portable interface unit of FIG. 1; 
     FIG. 6 is a second end view of the portable interface unit of FIG. 1; 
     FIG. 7 is a bottom view of the portable interface unit of FIG. 1; 
     FIG. 8 is a perspective view of the portable interface unit shown in a closed position; and, 
     FIG. 9 is a perspective view of the portable interface unit of FIG. 1 shown with an extended antenna.