Lighting fixture

Details Lighting fixture Lighting fixture

1977-05-26

1978-09-12

Nelson, Peter A.

Illumination

Revolving

362150, 52 28, F21V 2130

Patent

active

041141865

ABSTRACT:
A hollow light duct extends through the roof of a building to the ceiling of a room within the building to be lighted. A translucent light emitting panel is mounted over one end of the duct on the roof of the building and a hingeable lid is secured to the end of the duct. The lid is provided with a reflecting surface for reflecting sunlight through the translucent panel into the duct. The opposite end of the duct includes a diffusing panel positioned in the ceiling of the room; the duct includes artificial light source to provide illumination when insufficient daylight is present; the reflecting lid is closed to reflect the artificial light and prevent its escape from a duct when the artificial light source is in use.

REFERENCES:
patent: 1652347 (1927-12-01), Champeau
patent: 3113728 (1963-12-01), Boyd
patent: 3130922 (1964-04-01), Smith
patent: 3403614 (1968-10-01), Garnes
patent: 3755667 (1973-08-01), Price
patent: 3855463 (1974-12-01), Fowler
patent: 4041307 (1977-08-01), Napoli et al.

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