PROBLEM TO BE SOLVED: To provide a lighting device, a light source device, an illumination device and a head lamp device for a vehicle for which malfunction can be suppressed.SOLUTION: A lighting device 1 measures the impedance of a first impedance element 21 when no load current from a lighting source device 2 flows in a second output terminal 13B connected to the first impedance element 21. Accordingly, the lighting device 1 can avoid a voltage drop effect caused by the contact resistance of a connector. Therefore, the lighting device 1 can suppress malfunction caused by erroneous determination of the impedance value of the first impedance element 21 for setting an output target value.SELECTED DRAWING: Figure 1

    【課題】誤動作の抑制を図る。【解決手段】本実施形態の点灯装置1は、第1インピーダンス素子21が接続された第2出力端子13Bに光源装置2の負荷電流が流れていないとき、第1インピーダンス素子21のインピーダンス計測を行う。これにより、点灯装置1は、コネクタの接触抵抗による電圧降下の影響を回避することができる。そのため、点灯装置1は、従来例と比較して、出力目標値を設定する第1インピーダンス素子21のインピーダンス値を誤判定することによる誤動作を抑制することができる。【選択図】 図1


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    Title :

    LIGHTING DEVICE, LIGHT SOURCE DEVICE, ILLUMINATION DEVICE AND HEAD LAMP DEVICE FOR VEHICLE


    Additional title:

    点灯装置、及び光源装置、照明装置、車両用前照灯装置


    Contributors:

    Publication date :

    2016-02-04


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    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



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