Patent ID: 7126459

Claim:
A warning device for bicycle, comprising a magnetic and a coil mechanism; said magnetic mechanism including a magnetic element assembly, a mounting module, and a holding module; said magnetic element assembly being held in the holding module, and said holding module being movably connected to said mounting module; said coil mechanism including a housing, a coil assembly, a rectifier unit, a plurality of light-emitting elements, and a connecting module; said coil assembly, said rectifier unit, and said light-emitting elements being electrically connected to one another and then received in said housing; said mounting module of said magnetic mechanism being fixedly mounted on a fixed part of a bicycle close to a wheel thereof, and said connecting module of said coil mechanism being fixedly connected to two spokes of said wheel, such that said magnetic element assembly and said coil assembly are located at corresponding radial positions relative to said wheel; whereby when said wheel rotates to move said coil assembly to pass said magnetic element assembly, said coil assembly is electromagnetically induced to produce induction current for said light-emitting elements to emit warning light.