| 摘要 |
PURPOSE: A lighting device is provided to improve an emoticon function by controlling the illuminance and direction of light according to the angle of a cover and a substrate. CONSTITUTION: A cover(20) is foldably connected to a substrate(10). A first light source(30) is installed on the substrate. A second light source(40) is installed on the cover. An angle sensor senses the folded angle of the cover and the substrate. A controller controls the illuminance of the first light source and the second light source. |
