Directional and warning blink apparatus for a vehicle, particularly a motor vehicle

A directional and warning blink apparatus for a vehicle, in particular a motor vehicle, comprising two groups of blink-signal lamps, a directional-blink switch for selecting a blink-signal lamp group, a warning-blink switch for combined switching of both blink-signal lamp groups, a directional warning blink sender including a relay for controlling the blink-signal lamps, a timing generator for producing timing signals, a driving circuit for controlling the relay corresponding to the timing signals of the timing generator, and a control and logic circuit means having a measuring input terminal to which is applied a voltage signal proportionate to a blink-signal lamp current, and for controlling the timing operation of the timing generator depending upon said voltage signal,

• wherein the control and logic circuit means has separate start-input terminals, one coupled to a circuit for receiving a voltage signal from the directional-blink switch and the other coupled to a circuit for receiving a voltage signal from the warning-blink switch, for starting the timing generator in response to said voltage signals, said voltage signals informing the control and logic circuit means of one of a switched directional-blinking or warning-blinking mode of operation of the lamps, said control and logic circuit means including a means for responding to the voltage signals applied to said start-input terminals by causing the timing generator in the warning-blinking mode of operation to produce predetermined first timing signals, if two or more blink-signal lamps are functioning, and in the directional-blinking mode of operation to produce second timing signals, different from the first timing signals, if the controlled blink-signal lamp group has one or more non-functioning blink-signal lamps.