Title:
CAR STOP
Document Type and Number:
Japanese Patent JP3914432
Kind Code:
B
Abstract:
PROBLEM TO BE SOLVED: To enable the use of an emitter with an increased luminance so as to enhance visibility of a car stop with the emitter at night, by minimizing total electric energy for use in the car stop.
SOLUTION: When an infrared ray 20, which is emitted from a pedestrian 2 getting close to the car stop 1, is received by a pyroelectric element of a pedestrian detecting sensor 11, a feeble current, which is generated in the pyroelectric element, is passed through a control board 15; only when the approach of the pedestrian 2 is detected, the current for emission is passed from a capacitor 14 in accordance with a signal from the control board 15, so that LEDs 16 can light up or blink toward the pedestrian 2; and in the absence of the comings and goings of the pedestrians 2, the LEDs 16 are prevented from emitting light, so that electricity can be saved and so that the luminance of the emitter can be increased by just that much.
Inventors:
Sagawa, Shuichi
Watabe, Noboru
Watabe, Noboru
Application Number:
JP2001000398654
Publication Date:
February 09, 2007
Filing Date:
December 28, 2001
Export Citation:
Assignee:
SEKISUI JUSHI CO LTD
International Classes:
E01F9/00; E01F15/04; E01F9/016; E01F9/03; E01F15/00; G08B21/24; E01F9/00; E01F15/02; E01F9/011; E01F15/00; G08B21/00; (IPC1-7): E01F15/00; E01F9/00; G08B21/24