Vehicle lighting unit

A vehicle lighting unit (10) can reduce the load applied to the actuator (31, 32, 51, 52) for driving a reflecting member (2) as well as can improve the durability of the actuator (31, 32, 51, 52). The vehicle lighting unit (10) can include a light source, a reflecting member (2) configured to refle...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Murata, Shigeru, Sugiyama, Takashi, Nakazawa, Katsunori
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING ORSUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES INGENERAL BLASTING ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY HEATING LIGHTING MECHANICAL ENGINEERING NON-PORTABLE LIGHTING DEVICES OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PERFORMING OPERATIONS PHYSICS SYSTEMS THEREOF TRANSPORTING VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS VEHICLES IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A vehicle lighting unit (10) can reduce the load applied to the actuator (31, 32, 51, 52) for driving a reflecting member (2) as well as can improve the durability of the actuator (31, 32, 51, 52). The vehicle lighting unit (10) can include a light source, a reflecting member (2) configured to reflect light from the light source (11) toward an illumination area, an actuator (31, 32, 51, 52) including inner piezoelectric actuators (31, 32) and outer piezoelectric actuators (51, 52) configured to cause the reflecting member (2) to swing (turn) around X and Y axes simultaneously, to thereby scan the illumination area with the reflected light from the reflecting member (2) horizontally and vertically, and a controller (12) configured to control the inner piezoelectric actuators (31, 32) and the outer piezoelectric actuators (51, 52) such that a scanning frequency in the vertical direction of the reflected light becomes larger than a scanning frequency in the horizontal direction of the reflected light.