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
F21V19/04—Fastening of light sources or lamp holders with provision for changing light source, e.g. turret
Landscapes
Engineering & Computer Science
(AREA)
General Engineering & Computer Science
(AREA)
Developing Agents For Electrophotography
(AREA)
Control Of Motors That Do Not Use Commutators
(AREA)