Abstract: A service controller for crowded elevator cars includes an illuminating apparatus (4) furnished in a top part of a car (1) that is configured to illuminate the car (1) interior, at least one elongated light sensor unit (8) constituted by multiple light sensors (10) on a base member (9) and installed along corner regions (7a, 7b) formed between a vertical wall surface (5) of the car and the car's floor surface (6), and a judgment device (11) that is configured to determine whether there is passenger boarding space in the car (1) based on the output of the light sensors (10).

Abstract: A safety device for an elevator door characterized by the following facts: a lever (2) with one end (3) pivoted at an elevator door safety shoe (1) has its other end (4) fixed and supported on each floor in a rotatable manner; a polarized reflection plate (11) is supported at one end of a link lever (8) which has its other end pivoted to the aforementioned lever (5) to swing around a pivot point (9); a detector (12) facing the polarized reflection plate (11) is connected to a controller (15); and the controller is connected to the door operator (16).