F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
F21V19/00—Fastening of light sources or lamp holders
F21V19/02—Fastening of light sources or lamp holders with provision for adjustment, e.g. for focusing
Moyens de fixation de la base et de l'articulation du projecteur au montant tubulaire correspondant des lampes, en particulier des lampes de bureau et lampadaires