To provide a method for improving night visibility for a bicycle, and a bicycle improved in night visibility.

In at least a part of the surface of parts constituting a bicycle, a luminescent coating film with a dielectric layer, a luminescent body layer, and a transparent conductive layer formed in this order is formed by coating, and a power supply for making the luminescent coating film emit light is provided. Furthermore, a transparent protective layer may be formed on the transparent conductive layer, and a conductive layer may be formed between the surface of the parts and the dielectric layer.