| 摘要 |
PURPOSE: A lighting device including a measuring unit for guiding usage related information is provided to inform usage related information such as used time of a lighting LED, thereby preventing possible deception by a seller in transactions of used LED lightings. CONSTITUTION: A power input unit(110) delivers power source to an LED driving unit(130). A usage measuring unit(120) measures the used time of a lighting LED(140). A guiding unit(200) guides a display unit or a sound output element to output the measured usage related information. [Reference numerals] (110) Power input unit; (120) Usage time measuring unit; (130) LED driving unit; (140) Lighting LED; (200) Lighting time guiding unit |
