The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 22, 2006
Filed:
Jul. 16, 2004
Terumasa Sudou, Shiga, JP;
Youichirou Hishigaki, Shiga, JP;
Shigeki Kondou, Shiga, JP;
Motonori Ogata, Shiga, JP;
Ryuji Imazu, Hokkaido, JP;
Masaya Yuasa, Hokkaido, JP;
Terumasa Sudou, Shiga, JP;
Youichirou Hishigaki, Shiga, JP;
Shigeki Kondou, Shiga, JP;
Motonori Ogata, Shiga, JP;
Ryuji Imazu, Hokkaido, JP;
Masaya Yuasa, Hokkaido, JP;
Sekisui Jushi Kabushiki Kaisha, Osaka, JP;
Abstract
A self-luminous road sign system comprises a plurality of sensor unitseach of which is equipped at least with a visibility meter and an illuminance meter, or which may be equipped with an anemovane and a thermometer as well as the visibility meter and the illuminance meter; and an information processing and management departmentfor centralized management of weather information detected by the plural sensor units in order to predict any danger in the road observation area, wherein the output information from the information processing and management departmentis displayed on road installationsconnected via a network. Based on the road background brightness obtained by the illuminance meter in the sensor unit, the optimum luminous brightness which provides a predetermined contrast is calculated. Based on this optimum luminous brightness and depending on the visibility information outputted from the visibility meter, the luminous brightness or information display of the sign part is controlled.