Patent ID: 7832910

Claim:
A lighting fixture comprising: a conduit; a stanchion arm attached to an upper end of said conduit; and a fixture head releasably coupled to said stanchion arm, said fixture head containing a source of illumination and having a radial finger disposed on a top thereof, wherein said stanchion arm includes: a housing having an entry for receiving said radial finger of said fixture head and an aperture for receiving a locking pin; a guard lever supported in said housing, said guard lever being movable from a home position to an away position by said radial finger of said fixture head upon rotation of said fixture head with respect to said housing, said guard lever blocking said locking pin aperture of said housing when in said home position; a switch mechanism supported in said housing; and a locking pin insertable in said locking pin aperture of said housing for actuating said switch mechanism when said lever guard is moved to said away position by said radial finger of said fixture head.