Innenbeleuchtung für Fahrzeuge

摘要

An interior lamp has a timing circuit (19) triggered by the switch (11) in the on-position. It keeps the light on for a certain period of at least 15 minutes. It is re-triggered by a second switch (13), a door switch, glove box switch or visor switch. It is re-triggered by other electric switch activity of the occupants, e.g. switching the windows or sliding roof or seat adjuster (but only if electric!), or for the fan, the radio, the exterior light or the wipers. The circuit has a device (21, 22) that flashes the lamp shortly before its time period elapses. The device is triggered by the end flank of the output signal from the timing circuit.