A bicycle hub includes a hub shaft, a hub shell, a bearing arrangement, an electricity generating mechanism and at least one lamp. One channel allows a flow of fluid from one end portion toward the other end portion in the longitudinal direction, and the other channel allows a flow of fluid from the other end portion to the one end portion in the longitudinal direction. Thus, decoding of the image can be performed correctly by calculating a quantization parameter equal to a quantization parameter used at the time of image encoding. The metallic coil sheets are stacked, and adjacent ones of the stacked metallic coil sheets are electrically connected by means of the connection terminals. The intermediate layer includes a first intermediate layer and a second intermediate layer.