DRIVING CIRCUIT FOR LIGHTING FIXTURE - ICHIKOH INDUSTRIES LTD

Title:

DRIVING CIRCUIT FOR LIGHTING FIXTURE

Document Type and Number:

Japanese Patent JP2010244716

Kind Code:

A

Abstract:

To retain a signal indicating abnormality of a vehicular lighting fixture 21a by an inexpensive and simple circuit structure.

The driving circuit for a lighting fixture which drives the vehicular lighting fixture 21a includes: a lighting controller 15a that controls the lighting state of the vehicular lighting fixture 21a; an operation determination portion 16a that determines whether both the operating states of the vehicular lighting fixture 21a and the lighting controller 15a are normal or any one of the operating states is abnormal; and a signal output portion 17a that outputs an output signal Vwng showing the operating state determined by the operation determination portion 16a to the outside. The signal output portion 17a includes a signal retaining portion 18a that retains the state of the output signal even in the state where power supply to the driving circuit 1a for a lighting fixture is interrupted.

Inventors:

ISHII SATOSHI

Application Number:

JP2009089071A

Publication Date:

October 28, 2010

Filing Date:

April 01, 2009

Export Citation:

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