Title:
AUTOMOBILE WARNING CIRCUIT
Document Type and Number:
Japanese Patent JPS61125944
Kind Code:
A
Abstract:
PURPOSE:To eliminate a mechanical relay so as to permit a device to be miniaturized allowing reliability to be improved by employing a normally closed switch in a circuit which enables a warning actuation to be provided when running conditions such as an automobile milage and an accumulated running time reach the specified limit. CONSTITUTION:Switches SWa, SWb, and SWc are closed in order in response to an automobile milage. When the automobile milage reaches A km. The switch SWa is closed for a short time. This allows a large quantity of electric current to flow to a fuse 6 permitting it to be disconnected in a short time by fusion because of its excessive current. Resultantly, as the electric current which has been applied to an exciting coil 8a of a normally closed relay 8 is interrupted, a contact 8b is then closed allowing a warning lamp 2 to be turned on. A driver who is aware of this warning may replace the fuse 6 in fusion with a new one to turn the warning lamp 22 off. Thus, this configuration, which employs no mechanical relay, enables components required to be reduced n number, a device to be small, cost required to be reduced, and also enables reliability to be improved.
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Inventors:
NAGASE KAZUO
WATANABE KIYOTO
WATANABE KIYOTO
Application Number:
JP24804984A
Publication Date:
June 13, 1986
Filing Date:
November 26, 1984
Export Citation:
Assignee:
NISSAN MOTOR
International Classes:
B60Q5/00; B60R16/02; B60R16/023; (IPC1-7): B60Q5/00
Attorney, Agent or Firm:
Hiroo Suzuki