Display device and method therefor

Abstract

A method and apparatus for display, having a a tailpipe attachment piece, adapted for coupling to the exhaust pipe of a vehicle, a receiver piece coupled to the tailpipe attachment piece, wherein the receiver piece is adapted for coupling to a display piece. In one embodiment, a pollution detection device includes a tailpipe attachment piece, a receiver piece coupled to the tailpipe attachment piece, and a chemical indicator coupled to the receiver piece, wherein the chemical indicator is sensitive to the chemistry of emissions. In one embodiment, a method of presenting an advertisement message is provided by attaching the message to the exhaust pipe.

What is claimed is:  
     
         1 . A display apparatus, comprising: 
 a tailpipe attachment piece, adapted for coupling an exhaust pipe of a vehicle; and    a receiver piece coupled to the tailpipe attachment piece, wherein the receiver piece is adapted for coupling to a display piece such that the display piece hangs below the exhaust pipe and approximately perpendicular to the length of the exhaust pipe providing exposure to the display piece from behind the vehicle.    
     
     
         2 . The display apparatus as in  claim 1 , further comprising a coupling means, the coupling means adapted for coupling the receiver piece to the tailpipe attachment piece.  
     
     
         3 . The display apparatus as in  claim 1 , wherein the tailpipe attachment piece and the receiver piece are formed as a single element.  
     
     
         4 . The display apparatus as in  claim 1 , wherein the tailpipe attachment piece is adjustable to accommodate multiple size exhaust pipes.  
     
     
         5 . The display apparatus as in  claim 1 , wherein the display piece has a first freedom of motion in a first rotational direction, and a second freedom of movement in an opposite rotational direction, and wherein the first and second freedom of motion are not equal.  
     
     
         6 . A display piece comprising: 
 a display portion for displaying information; and    a coupling piece coupled to the display portion and adapted for coupling to an exhaust pipe of a vehicle such that the display piece hangs approximately perpendicular to the length of the exhaust pipe providing exposure to the display piece from behind the vehicle.    
     
     
         7 . A display piece as in  claim 6 , wherein the display portion includes at least one lighting device.  
     
     
         8 . A display piece comprising: 
 a display means for displaying information; and    a coupling means coupled to the display means and adapted for coupling to an exhaust pipe of a vehicle such that the display means hangs approximately perpendicular to the length of the exhaust pipe providing exposure to the display means from behind the vehicle.    
     
     
         9 . The display piece as in  claim 8 , wherein the coupling means is operative for multi-positional control of the display portion.  
     
     
         10 . The display piece as in  claim 9 , wherein the coupling means is operative as a ball and socket connector.