A solid-state light source lighting device includes an adjuster configured to adjust an output current to be output through an output port, and a first switch to be electrically connected in parallel with a second LED of a plurality of solid-state light sources, and a controller configured to turn on and off the first switch. The controller is configured to keep the first switch off while the DC voltage (input voltage) received through the input port is higher than a threshold voltage, and keep the first switch on while the input voltage is lower than or equal to the threshold voltage. The threshold voltage is higher than or equal to a voltage necessary to turn on the plurality of solid-state light sources while the first switch is off.


    Access

    Download


    Export, share and cite



    Title :

    SOLID-STATE LIGHT SOURCE LIGHTING DEVICE, LUMINAIRE, VEHICLE LAMP, AND TWO-WHEELED VEHICLE


    Contributors:

    Publication date :

    2018-04-05


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    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 / H05B ELECTRIC HEATING , Elektrische Heizung




    TWO-WHEELED VEHICLE LAMP, TWO-WHEELED VEHICLE LAMP SYSTEM, AND VEHICLE LAMP

    FUJII KEISUKE / KURIYAMA RYOSUKE / KOIZUMI HIROYA et al. | European Patent Office | 2021

    Free access


    Vehicle luminaire and vehicle lamp device

    SHIRAISHI HIROMITSU | European Patent Office | 2020

    Free access

    VEHICLE LUMINAIRE AND VEHICLE LAMP

    KOSUGI HIROSHI | European Patent Office | 2021

    Free access