[0001] The present invention relates to a light-emitting helmet, which comprises a body formed to have a receiving space open at its bottom in a hemispherical shape so as to be worn on the head, a light emitting unit mounted on the body and emitting light to the outside, And an illuminance sensor mounted on the main body so as to detect an external illuminance, and an automatic mode and an off mode for the operation of the light emitting unit. And a control unit for controlling power supplied from the charger unit to the light emitting unit so that the light emitting unit emits light when the illuminance detected by the illuminance sensor is less than a first reference illuminance, According to such a light-emitting helmet, it is possible to control the light emission according to the external illuminance, thereby providing the user with convenience and guidance to prevent collision with the obstacle.