Lighting apparatus for vehicular discharge lamp
First Claim
1. A lighting apparatus for use with high-voltage discharge-type headlamps mounted on a motor vehicle, comprising:
- a high-voltage power supply for providing a high-voltage for operating said headlamps;
a hood open/close detector for detecting an open/closed state of a hood of said vehicle;
a power supply/cutoff circuit for controlling the supply of power to said power supply in response to an output signal from said hood open/close detector, whereby said high voltage is shut off whenever said hood open/close detector produces an output signal indicating that said hood is in an open state.
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Accused Products
Abstract
Disclosed is a lighting apparatus for a vehicular discharge lamp which prevents the occurrence of an electric shock when the status of a vehicle is changed while the discharge lamp is on, such as when the hood of the vehicle is opened for inspection or repair. A hood open/close detector detects that the hood is opened while the discharge lamp is lit, and upon reception of a detection signal from the detector, the power supply/cutoff circuit opens a cutoff switch means to stop power supply from a battery to a lighting circuit, turning off the discharge lamp. In this manner, a person who opens a hood for work can be kept out of danger of a high voltage that is supplied to the discharge lamp.
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Citations
3 Claims
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1. A lighting apparatus for use with high-voltage discharge-type headlamps mounted on a motor vehicle, comprising:
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a high-voltage power supply for providing a high-voltage for operating said headlamps; a hood open/close detector for detecting an open/closed state of a hood of said vehicle; a power supply/cutoff circuit for controlling the supply of power to said power supply in response to an output signal from said hood open/close detector, whereby said high voltage is shut off whenever said hood open/close detector produces an output signal indicating that said hood is in an open state. - View Dependent Claims (2)
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3. A lighting apparatus for use with high-voltage discharge-type headlamps mounted on a motor vehicle, comprising:
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a high-voltage power supply for providing a high-voltage for operating said headlamps; a collision detector for detecting a collision of said vehicle; a power supply/cutoff circuit for controlling the supply of power to said power supply in response to an output signal from said collision detector, whereby said high voltage is shut off whenever said collision detector produces an output signal indicating a collision of said vehicle.
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Specification