| 摘要 |
PROBLEM TO BE SOLVED: To provide an LED lighting device which may be replaced with a mercury lamp and is suitable for a large shape.SOLUTION: An LED lighting device is composed of a translucent cover, an LED mounting substrate on which LEDs are mounted; and a light reflection part. The appearance of the LED mounting substrate is formed into a polygonal column shape. The LEDs are mounted on an outer surface of the LED mounting substrate. Heat generated by the LEDs is conducted from one end part of the LED mounting substrate to the light reflection part to be radiated. |
