Patent ID: 8827515

Claim:
A control system for bicycle direction light, suitable for being disposed on a bicycle and a head fitting, wherein the control system comprises: a sensing module, disposed on the head fitting, for sensing a movement speed, a turning angle, and a turning direction of a user's head; and a direction light module, disposed on the bicycle and facing towards the back of the bicycle, wherein the direction light module turns on a corresponding indication light in accordance with the turning direction of the user's head when the bicycle is moving and the sensing module senses that the turning angle of the user's head is changed from a forward direction angle range to a preset angle range during a sensing period; wherein the sensing module determines whether the user performs an equipping action or a removing action in accordance with the movement speed and angle of the head fitting, wherein the sensing module enters from a standby mode into a normal mode when the sensing module senses the equipping action, and the sensing module enters from the normal mode into the standby mode when the sensing module senses the removing action.