| 摘要 |
A vehicle LED lighting device includes a drive control means 51 includes an abnormality detection means 60 detecting a disconnection or short-circuit abnormality of the LED lamp, the abnormality detection means 60 includes a current detection unit 61 detecting the value of a current flowing through the LED lamps 20 and 30 when the LED lamps 20 and 30 are driven by the drive control means 51, a comparison unit 62 comparing the current value detected by the current detection unit 61 with a predetermined abnormality determination value, and a determination value switching unit 63 switching the abnormality determination value in accordance with variation of a power supply voltage of the vehicle, and whether or not there is the disconnection or short-circuit abnormality is judged based on the abnormality determination value switched by the determination value switching unit 63 and the detected current value.
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