The invention enables the inclusion of voice and remaining audio information at different parts of the audio production process. The tubular body includes a pair of communicating ports configured to supply air flowing through the first channel and the second channel toward the light emission portion. The invention also relates to medical devices having a surface and an outer region comprising a metal oxide or metal material having a plurality of pores therein and a polymer disposed on the metal oxide or metal material. Then, taking into account the relative positional relation in the image between the vehicle and road edges, the position of the vehicle on the reconstructed three-dimensional road structure is determined. The non-aqueous secondary batteries and the aqueous secondary battery are connected in series such that the polarities thereof are reversed, and charging and discharging are carried out based on the polarities of the non-aqueous secondary batteries.