| 摘要 |
PROBLEM TO BE SOLVED: To provide an LED lighting device in which cooling performance of an LED is improved without receiving various restrictions such as wiring restriction and light distribution restriction.SOLUTION: An LED lighting device is provided with an LED 32, a casing 2 for forming an LED housing space for housing the LED 32, and an air supplying passage S1 for supplying gas in the LED housing space formed in the casing 2. The air supplying passage S1 includes a nozzle part 73 open toward the LED 32, the nozzle part 73 is positioned on an outer side than a light distribution angle X of the LED 32, and a flow speed of the gas discharged from the nozzle part 73 is structured to be a higher speed than the flow speed of the gas on an upper stream side of the nozzle part 73 in the air supplying passage S1. |
