Vehicle lighting control system

Patent metadata

Field	Value
Publication number	US-9862304-B2
Application number	US-201615383942-A
Country	US
Kind code	B2
Filing date	Dec 19, 2016
Priority date	Feb 15, 2016
Publication date	Jan 9, 2018
Grant date	Jan 9, 2018

Abstract

A vehicle lighting control system for controlling headlights of a vehicle and a display device comprises an illuminance detector for detecting an illuminance outside of the vehicle, and a lighting controller for controlling luminances of the headlights and the display device based on the detected illuminance. The lighting controller includes a headlight controlling module for turning the headlights off when the illuminance is above a first threshold, and turning the headlights on when the illuminance is the first threshold or below, and a display device controlling module for controlling the luminance of the display device to a first set value when the illuminance is above a second threshold, and controlling the luminance of the display device to a second set value when the illuminance is the second threshold or below, the second threshold being lower than the first threshold, the second set value being lower than the first set value.

First claim

What is claimed is:

1. A vehicle lighting control system for controlling headlights of a vehicle and a display device for displaying information of the vehicle toward a cabin of the vehicle, comprising:
an illuminance detector for detecting an illuminance outside of the vehicle; and
a lighting controller for controlling luminances of the headlights and the display device based on the detected illuminance outside of the vehicle,
wherein the lighting controller includes a processor configured to execute:
a headlight controlling module for turning the headlights off when the illuminance outside of the vehicle is above a first threshold, turning the headlights on when the illuminance outside of the vehicle is the first threshold or below, and turning the headlights on and controlling the luminance of the display device to a second value when the illuminance outside of the vehicle is below the first threshold and above a second threshold; and
a display device controlling module for controlling the luminance of the display device to a first value when the illuminance outside of the vehicle is above the second threshold, and controlling the luminance of the display device to the second value when the illuminance outside of the vehicle is the second threshold or below, the second threshold being lower than the first threshold, the second value being darker than the first value.

2. The vehicle lighting control system of claim 1 , wherein the vehicle includes a switch light for illuminating a control switch inside the vehicle, and
wherein the processor is configured to execute a switch light controlling module for turning the switch light off when the illuminance outside of the vehicle is above the first threshold, and turning the switch light on when the illuminance outside of the vehicle is the first threshold or below.

3. The vehicle lighting control system of claim 2 , wherein the switch light has a light source built in the control switch.

4. The vehicle lighting control system of claim 1 , wherein the vehicle includes a light switch for switching a state of the headlights to one of an OFF state, an automatic ON-OFF state, and an ON state, and
wherein the display device controlling module controls the luminance of the display device according to the illuminance outside of the vehicle when the headlights are set to one of the ON and automatic ON-OFF states by the light switch.

5. The vehicle lighting control system of claim 1 , wherein the vehicle includes a light switch for switching a state of the headlights to one of an OFF state, an automatic ON-OFF state, and an ON state, and
wherein the display device controlling module controls the luminance of the display device according to the illuminance outside of the vehicle when the headlights are set to the automatic ON-OFF state by the light switch.

6. The vehicle lighting control system of claim 1 , wherein the display device is a display of a navigation system.

7. The vehicle lighting control system of claim 1 , wherein the display device is a display disposed on an instrument panel of the vehicle.

Assignees

• Mazda Motor

Inventors

• Watase Hiroyuki

Classifications

• H05B47/11 Primary

  by determining the brightness or colour temperature of ambient light · CPC title

• G09G2380/10

  Automotive applications · CPC title

• G09G2320/0626

  for control of overall brightness · CPC title

• G09G3/3406

  Control of illumination source (illumination devices structurally associated with liquid crystal cells G02F1/1336) · CPC title

• B60Q3/16

  Circuits; Control arrangements · CPC title