Cycling helmet capable of switching sound production guidance mode based on bone conduction earphone

A cycling helmet capable of switching a guidance mode of sound production based on a bone conduction earphone, comprising a helmet body and the bone conduction earphone disposed on the helmet body, wherein the bone conduction earphone comprises a magnet, a coil and a bone conduction oscillator, and the bone conduction oscillator can contact the helmet body, so as to cause the helmet body to oscillate to form a sound cavity;

• wherein the helmet body comprises a resonant shell capable of directly contacting the bone conduction oscillator, and the bone conduction earphone is rotatably connected with the helmet body, so that the bone conduction oscillator has a first state of contacting the resonant shell and a second state wherein the bone conduction oscillator is configured to contact a head of a wearer wearing the helmet;
• wherein the helmet body is provided with a containing cavity for containing the bone conduction earphone in the first state, at least one side wall of the containing cavity is the resonant shell, and in the first state, the bone conduction earphone is located in the containing cavity, and the bone conduction oscillator of the bone conduction earphone contacts the resonant shell.