| 摘要 |
PURPOSE:To sufficiently ensure a rear visual range during a running condition required for a rear visual range and to improve safety, by a method wherein, in a vehicle which is conducting the dazzle-proofing action of a reflecting mirror during detection of rear light, the dazzle-proofing action of the reflecting mirror is prohibited during said running condition. CONSTITUTION:During night running in which a light switch 11 is made to light a head light, when a strong light is irradiated from the rear of a vehicle by means of the head light of a following car, the potential of a contact point between a photo diode 8, attached to a dazzle-proofing type side mirror, and a load resistance 26 is decreased to a low level, an a.c. voltage is applied between transparent electrode layers 3 and 5 of a liquid crystal element plate 50 of the side mirror, and a liquid crystal layer 4 becomes opaque to bring the side mirror into a dazzle-proofing state. In which case, when an output is emitted from either a winker control detecting switch 15, a steering control detecting switch 19, or a backward control detecting switch 18, the output of the NOR circuit 23 is decreased to a low level, and said dazzle-proofing action is prohibited.
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