| 摘要 |
PURPOSE:To prevent the breakage or a erroneous action of a touch button device when a human body is charged with static electricity by shielding the illumination light in a car being detected by a photo-sensor from an opening section, and registering a destination floor when a finger is brought into contact with the opening section at the center of the name plate of the destination floor. CONSTITUTION:A contact plate 4 having a hole 4a described with the floor number on the surface is arranged at the center of each of multiple button surfaces 3 made of a transparent body and arranged on the operation panel 2 of a car 1. A photo-transistor 5 serving as a photo-sensor and fixed to a fitting cover 5a is arranged on the inside of the hole 4a and connected to a signal circuit 6 via a lead wire 5b. This signal circuit 6 registers a car call when a finger of a passenger is brought into contact with the hole 4a of the contact plate 4 and the photo-transistor 5 detects that the light of a lighting system 7 in the car 1 from the hole 4a is shielded, and it outputs a signal to a control circuit lighting a confirmation display lamp 8 of car call registration. The breakage or an erroneous action of a touch button device due to static electricity is prevented even when a human body is charged. |
