An airfield guidance sign is provided. The airfield guidance sign has a housing with a display side. At least a portion of the display side is able to transmit light. For example, the display side may have a portion which is transparent or translucent. The airfield guidance sign includes an LED printed wiring assembly (“PWA”) mounted within the housing. The LED PWA has one or more LEDs configured to provide illumination to the display side of the housing. The illumination may be direct or indirect. The LEDs of the LED PWA are coated in an epoxy. For example, the LEDs may be coated in an optically-clear epoxy. In some embodiments, the entire LED PWA is coated in an epoxy. In some embodiments, portions of the LED PWA are coated in an epoxy that is not optically clear.
Durable LED Light Engine for Airfield Guidance Sign
26.07.2018
Patent
Elektronische Ressource
Englisch
IPC: | H01L Halbleiterbauelemente , SEMICONDUCTOR DEVICES / B64F GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT , Boden- oder Flugzeugträgerdeckeinrichtungen besonders ausgebildet für die Verwendung in Verbindung mit Luftfahrzeugen / F21V FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF , Funktionsmerkmale oder Einzelheiten von Leuchten oder Beleuchtungssystemen / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS / G09F DISPLAYING , Anzeigewesen |
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