F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F21 LIGHTING
F21V FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
F21V23/00 Arrangement of electric circuit elements in or on lighting devices
F21V23/06 the elements being coupling devices; , e.g. connectors