| 摘要 |
PROBLEM TO BE SOLVED: To provide an LED lighting device which is bright, uniform and free from reflection.SOLUTION: An LED lighting device includes: a case; a printed circuit board which is arranged at a bottom part of the case and in which a plurality of LEDs are mounted substantially in a linear manner; a cylindrical lens arranged in front of the LED; and a light diffusion plate arranged at an interval in front of the cylindrical lens. The light diffusion plate may have a cross section of a circular arc-shaped convex curved surface shape. First, light is efficiently condensed in a linear region by the cylindrical lens, and the light diffusion plate is arranged being separated in front of the cylindrical lens. Thus, a diffusion position of light comes close to a lighting object, and the LED lighting device becomes brighter than the conventional one.SELECTED DRAWING: Figure 1 |
