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:
Jan. 16, 2007
Filed:
May. 17, 2004
Hiroyuki Kojima, Kanagawa, JP;
Tomoko Ishiwata, Kanagawa, JP;
Takashi Ichijo, Kanagawa, JP;
Kozo Ogawa, Kanagawa, JP;
Yasuharu Takano, Kanagawa, JP;
Hiroyuki Kojima, Kanagawa, JP;
Tomoko Ishiwata, Kanagawa, JP;
Takashi Ichijo, Kanagawa, JP;
Kozo Ogawa, Kanagawa, JP;
Yasuharu Takano, Kanagawa, JP;
Toshiba Lighting & Technology Corporation, Tokyo, JP;
Abstract
A road indication device is provided. The road-guidance indicating device has a light projection unit including light control means for controlling a lamp and light emitted from the lamp. The light projection unit project a light whose peak luminosity is 30000 cd or more, i.e., the light has a luminosity equal to or larger than a peak luminosity of a headlight of a car running on the road. Since a light pillar of light having a high light output and a thick light pillar is projected from the light projection unit, the visuality of the light pillar is improved even in the bad weather and the boundary between the driveway and the shoulder on the road can be affirmatively guided and indicated.