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. 19, 2010
Filed:
Aug. 22, 2005
Yuichi Nakazawa, Shizuoka, JP;
Tomoyuki Sakai, Shizuoka, JP;
Yohnosuke Hara, Shizuoka, JP;
Koito Manufacturing Co., Ltd., Tokyo, JP;
Abstract
An apparatus for controlling the irradiation direction of a lamp for a vehicle is provided with an actuatorR for controlling the irradiation direction of a headlampR and a controller (ECU)for controlling the actuatorR in accordance with a pitch angle of a vehicle. The controllerincludes a monitor unit for monitoring the state of a control signal line CL for sending a control signal for controlling the actuatorR and determines an abnormality of the controller, the actuator or the control signal line based on the state of the control signal line. The controller is not required to be connected to the actuator via a wire harness dedicated for the monitoring which is provided independently, so that the number of the wire harnesses can be prevented from increasing. Further, since the actuator is not required to be provided with a dedicated monitor circuit, the configuration of the actuator is prevented from being complicated.