To provide a direction indication lamp control device which may detect wire disconnection of an LED element as a direction indication lamp and may extend a lifetime of the LED element. A direction indication lamp control device includes: a pulse signal generation unit that generates a pulse signal having a predetermined period; a current control element including the other end which outputs a drive current having a magnitude corresponding to amplitude of the pulse signal, the other end of the current control element being connected to one end of an external direction indication switch, and the other end of the direction indication switch being connected to a direction indication lamp; a current clamp unit which limits the drive current to a current upper limit value by decreasing amplitude of the pulse signal, in a case where the drive current exceeds the current upper limit value; a voltage clamp unit which limits a reference voltage to a voltage upper limit value by decreasing the amplitude of the pulse signal, in a case where the reference voltage exceeds the voltage upper limit value; and a wire disconnection detection unit which outputs a wire disconnection detection signal in a case where the drive current corresponding to the pulse wave of the pulse signal is equal to or less than a wire disconnection detection value. The current upper limit value is smaller than the drive current flowing through the direction indication lamp when the reference voltage is the voltage upper limit value.


    Access

    Download


    Export, share and cite



    Title :

    CONTROL DEVICE FOR TURN INDICATOR LAMPS, TURN INDICATOR DEVICE, AND METHOD FOR DETECTING WIRE BREAKAGES IN TURN INDICATOR DEVICE


    Additional title:

    STEUERUNGSVORRICHTUNG FÜR FAHRTRICHTUNGSBLINKER, FAHRTRICHTUNGSBLINKERVORRICHTUNG UND VERFAHREN ZUR ERKENNUNG VON DRAHTRISSEN IN DER FAHRTRICHTUNGSBLINKERVORRICHTUNG
    DISPOSITIF DE COMMANDE POUR LAMPES DE FEUX CLIGNOTANTS, DISPOSITIF DE FEUX CLIGNOTANTS ET PROCÉDÉ DE DÉTECTION DE RUPTURES DE FILS DANS UN DISPOSITIF DE FEUX CLIGNOTANTS


    Contributors:

    Publication date :

    2015-10-21


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    H05B ELECTRIC HEATING , Elektrische Heizung / 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



    TURN SIGNAL INDICATOR DEVICE

    MIZUNO YOSHIYUKI / AKAHORI HIDEHIRO | European Patent Office | 2019

    Free access

    Turn signal indicator device

    MIZUNO YOSHIYUKI / AKAHORI HIDEHIRO | European Patent Office | 2015

    Free access

    Turn indicator

    De Guiche, A De Gramont | NTRS | 1922


    Turn Direction Indicator Garment

    WATSON MELODIE / MORRISON ASTOR | European Patent Office | 2024

    Free access

    TURN AND BANK INDICATOR

    SAE Technical Papers | 1947