Door Switch For Railroad Vehicle, And Door Opening/closing Device Adapted For Use In Railroad Vehicle And Provided With The Door Switch

Provided are a door switch for a railroad vehicle, capable alone of detecting with improved reliability whether or not doors which open in opposite directions are at totally closed positions, and a door opening/closing device adapted for use in a railroad vehicle and provided with the door switch. A door switch (10) is provided with: a rod (22) which is provided so as to be movable relative to the vehicle body and is pressed when one door (100a) moves toward the totally closed position; a switch case (30) which is provided so as to be movable relative to both the vehicle body and the rod (22) and is pressed when the other door (100b) moves toward the totally closed position; a detection means which outputs a detection signal when the relative positions of the rod (22) and the switch case (30) occupy predetermined relative positions; and a spring (23) (pressing means) for pressing the rod (22) and the switch case (30) so that the relative positions of the rod (22) and the switch case (30) do not occupy the predetermined relative positions.