Combined air diffuser and lighting fixture

Claim 1

A COMBINATION LIGHT FIXTURE AND AIR DIFFUSER COMPRISING A DUCT OPENING INTO A ROOM AND HAVING A FLARED TERMINAL PORTION THEREOF, A SPIDER MOUNTED IN SAID DUCT INWARDLY FROM THE FLARED TERMINAL PORTION THEREOF AND HAVING A HUB CENTRALLY DISPOSED THEREOF, A STEM PERPENDICULARLY DISPOSED TO SAID SPIDER AND EXTENDING THROUGH AN OPENING THEREOF IN MOUNTED RELATION WITH RESPECT TO SAID HUB, A LIGHT REFLECTING SHELL MATUALLY FLARED AND MOUNTED FROM A LOWER PORTION OF SAID STEM AND TANGENTIALLY DISPOSED TO THE TERMINAL PORTION OF THE DUCT FOR CLOSING THE AIR PASSAGE THROUGH THE DUCT WHEN THEY ARE MUTUALLY CONTACTING EACH OTHER, AND A HOLDING PIN DISPOSED TO PROVIDE POSITIVE ADJUSTMENT OF SAID STEM IN ANY ONE OF SEVERAL POSITIONS THAT MAY ENGAGE ONE SIDE OF SAID HOLDING PIN, SAID STEM CAPABLE OF BEING POSITIVELY ADJUSTED ALONG ITS AXIS FOR INCREASING THE AIR FLOW THROUGH SAID DUCT, A LIGHT BULB AND SOCKET ARRANGEMENT CENTRALLY DISPOSED AND MOUNTED IN SAID LIGHT REFLECTING SHELL, AN APERTURED LIGHT DIFFUSER ENCOMPASSING SAID LIGHT BULB AND SOCKET, AND WHEREIN LIGHT POWER TO OBJECTS POSITIONED BELOW SAID LIGHT BULB RECEIVE INCREASED LIGHT POWER UPON LOWERING OF THE LIGHT REFLECTOR SHELL.