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Lighting device, luminaire, vehicle with same, and lighting method

  • US 9,967,948 B2
  • Filed: 08/15/2017
  • Issued: 05/08/2018
  • Est. Priority Date: 08/30/2016
  • Status: Expired due to Fees
First Claim
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1. A lighting device for causing at least one light source unit to emit light, each of the at least one light source unit including a light source and a corresponding load information outputter for outputting load information when electric power is supplied thereto, the load information representing a luminous characteristic of the light source, and the lighting device comprising:

  • at least one current outputter configured to supply a current to the light source of the at least one light source unit;

    a load characteristic obtainer configured to obtain the load information from the corresponding load information outputter of the at least one light source unit, by supplying the electric power to the load information outputter; and

    a controller configured to control the current of the at least one current outputter, which is supplied to the light source of the at least one light source unit, based on the load information obtained by the load characteristic obtainer,the load characteristic obtainer being configured to supply the electric power to the corresponding load information outputter only during a time period of obtaining the load information, but stop supply of the electric power to the corresponding load information outputter during a time period other than the time period of obtaining the load information.

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