Symbol 5012 from IEC 60417 - Title/Meaning: Lamp; lighting; illumination Function/description: To identify switches which control light sources, e.g. room lighting, lamp of a film projector, dial illumination of a device.
Additional information: 
Any specifications such as power consumption may be indicated besides or below the graphical symbol.
See also symbol 5320 and symbol 5321
Published in: Amendment 2, 2002 (error corrected);3C/703/FDIS;First edition, 1973
Own work using: iso.org/obp/graphics/grs/9fa95654-471e-402d-afa1-c7e16deb4e4c 200.png
Vectorization:  Mrmw