Inventors:
Russell Lewis Tartock - Springfield IL, US
Anthony W. Wilson - Springfield IL, US
Richard Mula - Westlake Village CA, US
Albert Boyd Cable - Springfield IL, US
Todd Hanson - Loretto MN, US
Aziz Rahman - Springfield IL, US
International Classification:
E01F 9/00, F21S 8/00
Abstract:
An airport inset light for an airport runway light system comprises a light fixture incorporating a light source that is covered with a lens. A flow path can be provided in the light fixture such that air can pass unrestrictedly between an exterior environment and an interior space of the light fixture. The flow path can be covered or filled with a hydrophobic filter material, which allows for the light fixture interior to exchange air with its exterior environment. Such a flow path can create pressure equalization between the exterior environment and the light fixture interior to prevent the formation of a vacuum in the light fixture interior. Hence, it can eliminate the possibility of water entering the interior of the light source due to pressure differential between the environment and the light source interior.