To provide a more efficient light source driving circuit and light source driving method.SOLUTION: A light source driving circuit includes; a first light source and a second light source connected in series with a power supply; a first resistive element which sets the amount of current flowing through at least the first light source; a second resistive element which sets the amount of current flowing through the second light source; and an adjustment section which adjusts the amount of current of at least one of the first light source and the second light source on the basis of a voltage value of the power supply.SELECTED DRAWING: Figure 1
【課題】より効率の良い光源駆動回路及び光源駆動方法を提供することを目的とする。【解決手段】光源駆動回路は、電源に対して直列に接続された第1光源と第2光源と、少なくとも第1光源に流れる電流量を設定する第1抵抗素子と、第2光源に流れる電流量を設定する第2抵抗素子と、電源の電圧値に基づき第1光源及び第2光源のうち少なくとも1つの電流量の調整を行う調整部と、を備える。【選択図】図1
LIGHT SOURCE DRIVING CIRCUIT AND LIGHT SOURCE DRIVING METHOD
光源駆動回路及び光源駆動方法
2019-10-10
Patent
Elektronische Ressource
Japanisch
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 |
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