BLOCK DYNAMO TYPE HEADLIGHT FOR BICYCLE

PROBLEM TO BE SOLVED: To enable safe travel even when a block dynamo is not used by lighting an LED light-emitting device in a specific case only. SOLUTION: In this headlight to be installed on a car body with a radiation direction set forward, a part of a mirror surface is cut in a curved and recessed reflection mirror surface of the headlight, where the LED light emitting element is faced, a primary or secondary battery to energize the light-emitting device to emit light, a vibration sensor to detect vibration by traveling to put a power source of the primary or secondary battery on for a specified time, and a light sensor to put the power source of the primary or secondary battery off when there is luminous energy more than specified are provided, and the LED light emitting element is set to emit light only when two conditions of detection of traveling vibration of a bicycle by the vibration sensor, and non-detection of luminous energy more than specified are satisfied. Visibility from ahead is thus set favorable to enable safe traveling even in driving without lighting.