| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a doorway voice output system of a railway vehicle eliminating the need of the addition of a power line when the system is retrofitted to an existing railway vehicle. <P>SOLUTION: In this doorway voice output system installed near the door of the doorway of the railway vehicle and outputting voice, when a control voltage for opening/closing the door is applied to a control line for opening/closing the door, a power voltage for the doorway voice output system is generated by the control voltage for opening/closing the door inputted thereto through the control line for operating the doorway voice output system. When the control voltage for opening/closing the door is not applied to the control line, the doorway voice output system is operated on the power voltage for the system inputted from a doorway power device thereto through the control line. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
