A ventilating exhaust fan including a housing, a light source module, and a panel module, with a conveniently replaceable light source is provided. An added swivel structure between a reflective cover and a lamp socket enables the lamp socket to turn around at certain angles relative to the reflective...http://www.google.ca/patents/US7600883?utm_source=gb-gplus-sharePatent US7600883 - Exhaust system with light source
