Title:
SAFETY DEVICE FOR ELEVATOR DOOR
Document Type and Number:
Japanese Patent JPH06191775
Kind Code:
A
Abstract:
PURPOSE: To prevent misoperation from being generated due to reflecting light of a landing lighting lamp, in a device for controlling an elevator door by detecting infrared energy emitted by on/off getting passengers.
CONSTITUTION: Converging zones 9A, 9B of infrared detectors 8A, 8B are set toward a spot of low infrared reflection factor. The zones are set to a landing floor in the vicinity of, for instance, a landing sill 11. Then, a reflecting amount of infrared energy is decreased. A surface of the landing sill 11 is formed rough surface to irregularly reflect the infrared energy, and the surface of the landing sill 11 is blackened to absorb the infrared energy.
Inventors:
TAKAHASHI TATSUJI
TAWADA MASANORI
KODERA TOSHIYUKI
TAWADA MASANORI
KODERA TOSHIYUKI
Application Number:
JP34756892A
Publication Date:
July 12, 1994
Filing Date:
December 28, 1992
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
B66B13/26; (IPC1-7): B66B13/26
Attorney, Agent or Firm:
Shinichi Kusano