| 摘要 |
PROBLEM TO BE SOLVED: To improve the visibility and decorating property of a transparent light emitting display body by allowing a formed part in a transparent body to emit light in variable colors with high luminance and to provide a transparent light emitting display board which emits light in variable colors with high luminance for the industrial field. SOLUTION: The characteristics of the light from an LED to brighten the formed body in a transparent body are defined so as to obtain a monochromatic bright formed part having no irregularity in the luminance. Then LEDs of three primary colors of red, green and blue are used to carry out additive color mixing of the three primary colors in the formed part on the basis of the above technique to emit light of variable colors and high luminance. A new printed wiring board to mount the LEDs necessary for the above method is developed. |
