To provide a signing lamp with high visibility which can be easily seen by a conductor when a station staff who judges that any worry of any harm on a passenger is not presumed even when a train leaves while the doors of the train are completely closed makes a sign to the conductor who is present at the rear part of the train on the platform of a rail station.

A signing lamp in a bar-shaped type constitution is adopted instead of a signing lamp in a conventional lantern type, and the light emitting part or head top end of each of plural light source lamps 10 and 11 is arranged so as to be the closest to the inside wall of an outer cylinder 12 of a cylindrical display part 1 so that a light quantity radiated from the cylindrical display pat 1 can be increased as much as possible for improving visibility. A reflection mirror 17 is arranged at the back part of each of the plural light source lamps, that is, the central axis side or an outer face except the head tip end, and/or a light reflective material 16 is adhered to the back face of each of the plural light source lamps themselves.