| 摘要 |
PURPOSE: A lighting device with an LED is provided to improve the uniformity of illuminance by arranging an LED lens on an LED element. CONSTITUTION: An LED lighting device comprises at least two LED elements(12), a light diffusion sheet(14), and a reflective sheet(13). The light diffusion sheet is arranged on the LED elements. The light diffusion sheet comprises one of a PC film, a PET film, and a PMMA film. The interval between the LED elements is 0.5-7 times as long as the interval between the Led element and the light diffusion sheet. A reflective sheet is interposed between LED elements. The reflective sheet is arranged between LED elements. |
