Patent ID: 9623792
Date: 2017-04-18
CPC Classifications: B60Q,F21S,F21Y

Claim:
1. A vehicle headlight installed in a vehicle, comprising: a plurality of lamp modules each configured to project light in front of the vehicle; and a control unit configured to control the plurality of lamp modules to be turned on and off so that a lighting pattern constituted by the lamp module or lamp modules being turned on is varied, wherein at least one lamp module out of the plurality of lamp modules is configured to form a predetermined light distribution for ensuring a driver's visibility when being turned on, wherein the plurality of lamp modules comprise at least a plurality of spot-light lamp modules and a plurality of cutoff line forming lamp modules, the plurality of spot-light lamp modules comprise at least a first spot-light lamp module and a second spot-light lamp module, each module being configured to form a spot-light type light distribution narrower than a light distribution formed by the cut-off line forming lamp module, the plurality of cutoff line forming lamp modules comprise at least a first cutoff line forming lamp module and a second cutoff line forming lamp module, each module being configured to form any one of a light distribution having a horizontal cutoff line and a light distribution pattern having an inclined cutoff line at least the first spot-light lamp module and the first cutoff line forming lamp module constitute a first group, at least the second spot-light lamp module and the second cutoff line forming lamp module constitute a second group, and the first group and the second group are arranged adjacent to each other, the control unit is configured for turning on and off the plurality of lamp modules, the control unit is configured to control as a lighting pattern to turn on all the lamp modules contained in the first group first, and then to turn off, or reduce a light intensity of, either the first cutoff line forming lamp module or the first spot-light lamp module in the first group which is positioned opposite to a side closer to the second group, and in synchronization therewith turn on either the second cutoff line forming lamp module or the second spot-light lamp module in the second group which is positioned on a side closer to the first group.