PROBLEM TO BE SOLVED: To provide a light source device that increases the degree of freedom of setting of values of currents supplied to respective LEDs of a matrix LED while suppressing an increase in number of wires.SOLUTION: A light source device includes a matrix part having a plurality of light emitting elements (LEDs 11-16, 21-26, and 31-36), and a control circuit 10 which drives the respective light emitting elements of the matrix part. The matrix part has a part to which respective one-end sides of two or more light emitting elements in each column are connected in common, and other-end sides of light emitting elements in each row are connected in common in the row. The control circuit 10 has a plurality of constant current sources 61a-c, 62a-c, and 63a-c which supply constant currents for each light emitting element having each one-end side connected in common in column; switching means (transistors 41-46) which are connected to respective other-end sides of respective light emitting elements connected in common in each row; and an arithmetic processing circuit 50 which performs ON/OFF control over the plurality of switching means.SELECTED DRAWING: Figure 1

    【課題】配線数の増加を抑えつつマトリクスLEDの各LEDへ供給する電流値設定の自由度を高める光源装置を提供する。【解決手段】複数の発光素子(LED11〜16、21〜26、31〜36)を有するマトリクス部と、マトリクス部の各発光素子を駆動する制御回路10を含む。マトリクス部は、各列において2以上の発光素子の各一端が共通接続された部分を有し、かつ、各行において当該各行の発光素子の各他端が共通接続されている。制御回路10は、各列において各一端が共通接続された発光素子ごとに定電流を供給する複数の定電流源61a〜c、62a〜c、63a〜cと、各行において共通接続された各発光素子の各他端と接続されたスイッチング手段(トランジスタ41〜46)と、複数のスイッチング手段のオンオフ制御を行う演算処理回路50と、を有する。【選択図】図1


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    Titel :

    LIGHT SOURCE DEVICE AND VEHICULAR LIGHTING FIXTURE


    Weitere Titelangaben:

    光源装置、車両用灯具


    Beteiligte:
    MIYAJI MAMORU (Autor:in) / SHIBATA YASUYUKI (Autor:in) / MATSUMOTO KOJI (Autor:in) / FUJINO TAKASHI (Autor:in)

    Erscheinungsdatum :

    04.04.2016


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    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




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