LED LIGHTING DEVICE, LIGHTING FIXTURE, AND VEHICLE

摘要

PROBLEM TO BE SOLVED: To reduce the size, weight, and cost of a device for controlling lighting of a plurality of LED light sources.

SOLUTION: A lighting fixture 1 includes a plurality of LED light sources 2 and 2, and an LED lighting device 3 for controlling lighting of the LED light source 2. Each of the LED light sources 2 is turned on when electric power is supplied from the LED lighting device 3. The LED lighting device 3 includes a DC/DC converter 51, a switching control part 54, and a PWM controller 65. The DC/DC converter 51 has a function to supply electric power to the LED light sources 2. The switching control part 54 selects an LED light source 2 which is connected to the DC/DC converter 51 by switching on/off of a first switch 52 and a second switch 53. The PWM controller 65 switches a level of electric power by switching on/off an LED drive switch 64 when the LED light source 2 connected to the DC/DC converter 51 is selected.

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