This air bag device includes: an air bag which is arranged between an under-window panel and a lining that covers a cabin interior side thereof, and develops upward along an inner surface of a window; and a pressing member which presses a bottom portion of the air bag toward the under-window panel while developing the air bag. The fresh gas temperature is determined by a fresh gas temperature model which is adaptively adjusted in response to influencing parameters relevant to the fresh gas temperature. The packaging module has packaging robots, for producing a sheet package by packaging the X-ray films stacked on one another.