An autonomous emergency light unit (2) for an aircraft has a power input (4) for receiving power from an external power supply, a capacitor (8), at least one LED (10a, 10b, 10n) and a light unit control logic (12) for operating the emergency light unit (2) in a plurality of operating states as a response to external control information. The plurality of operating states includes a discharge and illumination state when no power input is sensed at the power input, a charge and illumination state when power is still sensed at the power input, an armed and charged state, a sensed crash state and a shutdown state. The control unit activates a respective state by controlling switches in the light unit.
Autonomous emergency light unit for an aircraft and emergency lighting system comprising such light unit
Autonome Notlichteinheit für ein Flugzeug und Notlichtsystem mit einer solchen Lichteinheit
Unité de lumière d'urgence autonome pour aéronef et système d'éclairage d'urgence comprenant une telle unité d'éclairage
2020-02-19
Patent
Electronic Resource
English
IPC: | F21S Ortsfeste Leuchten , NON-PORTABLE LIGHTING DEVICES / B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein / B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT / F21K Nicht-elektrische Lichtquellen unter Verwendung von Lumineszenz , NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE / F21V FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF , Funktionsmerkmale oder Einzelheiten von Leuchten oder Beleuchtungssystemen / G08B SIGNALLING OR CALLING SYSTEMS , Signalisier- oder Rufsysteme / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / H05B ELECTRIC HEATING , Elektrische Heizung |
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