| 摘要 |
The invention relates to a lighting unit for installation in a plane, in particular for airports, with the object of radiating light in an optimum manner in two opposite directions in an energy-saving way and with a minimum of electric power. It should be compact and its function should not be adversely affected during rough operations by snowclearing equipment or the like; it has the following features; Flat prism grating are inserted horizontally in orifices of a flat prism holder having an upward sloping upper surface; a light source is arranged under each prism grating. |
