Light bar

Abstract

A light bar may include a light head with chip-on-board (COB) light emitting diode (LED) and an optic component mounted adjacent to the COB LED. The light bar may comprise short and long center modules. The light bar may include a plurality of housing modules where each housing module includes a light head and a lens cover having a top portion that is substantially impervious to ultraviolet radiation, and a lens portion extending downward from the top portion in generally opposing relationship with the light head. The light bar may include a circuit board including a wire-to-board connector, and a light head including a wire-to-board connector mated with the wire-to-board connector on the circuit board to electrically connect the light head to the circuit board. The light head may include a holographic diffuser.

What is claimed is: 
     
         1 . A light bar comprising:
 an elongate base having opposite longitudinal ends and a length extending between the longitudinal ends;   first and second outboard housing modules removably secured to the base adjacent to the opposite longitudinal ends of the base, at least one light head being disposed in each of the first and second outboard housing modules;   a short center module removably secured to the base between the first and second outboard housing modules, the short center module having a length extending along the length of the base, at least one light head being disposed in the short center module;   a long center module removably secured to the base between the first and second outboard housing modules, the long center module having a length extending along the length of the base, at least one light head being disposed in the long center module;   wherein the length of the long center module is greater than the length of the short center module,   wherein a length of each of the first and second outboard housing modules is greater than the length of the short center module.   
     
     
         2 . A light bar comprising:
 an elongate base having a length extending between opposite longitudinal ends;   a plurality of housing modules secured along the length of the base, each housing module including:
 at least one light head, 
 a platform on which said at least one light head is mounted, 
 a lens cover secured to the platform, the lens cover having a top portion that is substantially impervious to ultraviolet radiation, and a lens portion extending downward from the top portion in generally opposing relationship with said at least one light head. 
   
     
     
         3 . A light bar as set forth in  claim 2  wherein each housing module further includes a gasket secured generally adjacent to a perimeter of the platform, wherein the lens portion of the lens cover compresses the gasket to form a watertight seal between the lens cover and the platform. 
     
     
         4 . A light bar as set forth in  claim 3  wherein the platform includes an upstanding projection extending generally adjacent to the perimeter of the platform, wherein the gasket is secured to the upstanding projection. 
     
     
         5 . The light bar set forth in  claim 2 , wherein the top portion of the lens cover is generally opaque, and the lens portion is generally transparent.