Post top mounted lighting unit

Claim 1

A POST TOP LIGHTING UNIT INCLUDING, POST TOP ENGAGING ADAPTOR MEANS, A TUBULAR BASE PORTION ATTACHED TO SAID POST TOP ADAPTOR MEANS AND HAVING AN OPEN TOP AND BOTTOM, SAID BASE PORTION INCLUDING A FIRST REFRACTOR RING ON ITS UPPER END, A TUBULAR REFRACTOR HAVING A LOWER END ENGAGING SAID FIRST REFRACTOR RING AND EXTENDING GENERALLY UPWARD THEREFROM, A SECOND REFRACTOR RING ENGAGING THE UPPER EDGE OF SAID REFRACTOR, AN INVERTED DISHED REFLECTOR HAVING A DIAMETER GREATER THAN THE DIAMETER OF SAID REFRACTOR, RELEASABLE ATTACHMENT MEANS FOR MOUNTING SAID REFLECTOR ON SAID SECOND REFRACTOR RING, A PLURALITY OF SPACED APART ROD-LIKE MEMBERS COUPLED TO SAID BASE PORTION AND EXTENDING UPWARDLY THROUGH THE INTERIOR OF SAID REFRACTOR TO RELEASABLY ENGAGE SAID SECOND REFRACTOR RING TO CLAMP THE REFRACTOR IN PLACE AND TO PREVENT UPWARD MOVEMENT OF SAID REFLECTOR.