US Patent 9746159 Lighting system having a sealing system

Lighting system including housing having base plate, and housing wall projecting in upward direction. Container with LED in housing having visible light-transmissive top plate and container wall projecting in downward direction. Gasket is configured for forming seal between container wall and base plate to form sealed container. Rail interposed between interior side of housing wall and exterior side of container wall. Rail has first side facing towards interior side of housing wall and second side facing toward exterior side of container wall. First raised region forms part of interior side of housing wall or part of first side of rail. Second raised region forms part of exterior side of container wall or part of second side of rail. First raised region is configured for limiting movement of rail away from base plate along upward direction, and second raised region is configured for limiting such movement of container wall.