Vehicle headlight control apparatus
First Claim
Patent Images
1. A vehicle headlight control apparatus that controls a headlight of a vehicle, the headlight including at least one light source, comprising:
- a luminance changing section that gradually changes a luminance of the at least one light source between a predetermined on state and a predetermined off state over a switching time period; and
a time period determining section that determines the switching time period in a changeable manner, wherein;
the at least one light source comprises a plurality of light sources;
an S-Hi mode is defined to achieve a light shielding Hi beam state where a lighting part in the plurality of light sources that forms a high beam is turned on and a remaining part in the plurality of light sources is turned off; and
the luminance changing section further gradually changes, in the S-Hi mode, a part of the plurality of light sources between the on state and the off state over the switching time period determined by the time period determining section.
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Abstract
A vehicle headlight control apparatus controls headlights of a vehicle including LEDs. The vehicle headlight control apparatus includes: drivers and each of which gradually changes a luminance of the LEDs between a predetermined on state and a predetermined off state over a switching time period; and a lamp ECU that determines the switching time period in a changeable manner.
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Citations
19 Claims
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1. A vehicle headlight control apparatus that controls a headlight of a vehicle, the headlight including at least one light source, comprising:
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a luminance changing section that gradually changes a luminance of the at least one light source between a predetermined on state and a predetermined off state over a switching time period; and a time period determining section that determines the switching time period in a changeable manner, wherein; the at least one light source comprises a plurality of light sources; an S-Hi mode is defined to achieve a light shielding Hi beam state where a lighting part in the plurality of light sources that forms a high beam is turned on and a remaining part in the plurality of light sources is turned off; and the luminance changing section further gradually changes, in the S-Hi mode, a part of the plurality of light sources between the on state and the off state over the switching time period determined by the time period determining section. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A vehicle headlight control apparatus that controls a headlight of a vehicle, the headlight including at least one light source, comprising:
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a luminance changing section that gradually changes a luminance of the at least one light source between a predetermined on state and a predetermined off state over a switching time period; and a time period determining section that determines the switching time period in a changeable manner, wherein; the at least one light source comprises a plurality of light sources; a Lo mode is defined to achieve a Lo beam state where the plurality of light sources forming a high beam are all turned off; a Hi mode is defined to achieve a Hi beam state where the plurality of light sources forming the high beam are all turned on; the luminance changing section changes, in an S-Hi mode, a combination of a lighting part in the plurality of light sources and a remaining part in the plurality of light sources; and when a mode is switched between the Lo mode, the Hi mode, and the S-Hi mode, the luminance changing section gradually changes a luminance of a part of the plurality of light sources between the on state and the off state over the switching time period determined by the time period determining section. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A vehicle headlight control apparatus that controls a headlight of a vehicle, the headlight including at least one light source, comprising:
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a luminance changing section that gradually changes a luminance of the at least one light source between a predetermined on state and a predetermined off state over a switching time period; and a time period determining section that determines the switching time period in a changeable manner, wherein the time period determining section is configured to; obtain an image of a forward section of the vehicle; determine a first value of the switching time period if a forward vehicle has appeared in the image; determine a second value of the switching time if the forward vehicle has disappeared in the image, the second value being longer than the first value; determine a third value of the switching time period if an oncoming vehicle has appeared in the image; and determine a fourth value of the switching time if the oncoming vehicle has disappeared in the image, the fourth value being shorter than the third value.
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Specification