To reduce the circuit scale of a lighting fixture control device.SOLUTION: A device for controlling the operations of a plurality of light source parts 10a-10d constituting a lighting fixture 1 for a vehicle comprises: a power supply part 13; a fail-safe circuit 11 which outputs a fail-safe signal; a plurality of switch elements 12a-12e; a communication circuit 16; and a switch control circuit 15 which individually controls the open/close state of the respective switch elements 12a-12e on the basis of data for light source control acquired from the communication circuit 16. When a communication abnormality is detected in the communication circuit 16, the switch control circuit 15 switches the open/close state of the switch elements 12a-12e corresponding to the fail-safe circuit 11, the state of the fail-safe signal from the fail-safe circuit 11 changes according to the switching of the open/close state, and the power supply part 13 relatively reduces the drive power in comparison to the normal time in which there is no communication abnormality according to the change in the state of the fail-safe signal.SELECTED DRAWING: Figure 1
【課題】灯具制御装置の回路規模を低減すること。【解決手段】車両用灯具1を構成する複数の光源部10a~10dの動作を制御する装置であって、電力供給部13と、フェールセーフ信号を出力するフェールセーフ回路11と、複数のスイッチ素子12a~12eと、通信回路16と、通信回路16から取得した光源制御用データに基づいて各スイッチ素子12a~12eの開閉状態を個別に制御するスイッチ制御回路15と、を含み、通信回路16において通信異常が検出された際に、スイッチ制御回路15がフェールセーフ回路11に対応するスイッチ素子12a~12eの開閉状態を切り替え、当該開閉状態の切り替えに対応してフェールセーフ回路11のフェールセーフ信号の状態が変化し、当該フェールセーフ信号の状態の変化に対応して電力供給部13が駆動電力を通信異常のない通常時よりも相対的に低下させる。【選択図】図1
LIGHTING FIXTURE CONTROL DEVICE AND LIGHTING FIXTURE FOR VEHICLE
灯具制御装置、車両用灯具
2022-12-26
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 |
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