| 摘要 |
PURPOSE:To prevent the erroneous operation by an operator by providing the pertinent information by the illumination light color to the operator by providing plural kinds of luminous substances having different luminous color in a lighting type push button switch. CONSTITUTION:A contact point 81a is an always opened signal contact point which is closed by a door closing instruction and opened by a door reopening instruction through a door opening button operation and by the completion of the closing of the door, and a contact point 82a is an always opened signal contact point which is closed by the door reopening instruction through the door opening button operation and opened when the opening of the door is completed. Though the light source for the illumination part for a door opening button is lighting-controlled for the red and green colors and put-off state by these contact points, a red lamp comes ON, when the operation is effective, and a green lamp comes ON when the operation is carried out, and further the put-off state is generated when the operation is ineffective. In this case, the green lamp comes ON, if the door opening button is operated, but the illumination surface Lo of the door opening button is lighted, since also the red lamp lights up to the completion of the opening of the door. |
