ジョイフルトレインは一般の列車と何が違いますか？
The "Joyful Train" concept can be traced back to 1960, when a 1935-vintage SuHaShi 29 dining car was converted into a Japanese-style "o-zashiki" train with "tatami" flooring and "shoji" paper screens on the windows. This could be coupled to regular service trains for use by charter parties. A second car was similarly modified in April 1961.
Japanese-style "o-zashiki" trai