| 摘要 |
PROBLEM TO BE SOLVED: To provide a portable light-emitting device which can be relocated freely and used outdoor in a place where no power supply facility is located.SOLUTION: A light-emitting device comprises: a light-emitting part 11; a power-generation part 13 which produces an electromotive force on receipt of light; a translucent sealing sheet 17 for encapsulating the light-emitting part and the power-generation part; a charger 23 which is encapsulated in the sealing sheet and electrically connected with the light-emitting part and the power-generation part, and stores an electric power generated by the power-generation part and supplies the electric power to the light-emitting part; and a charge/discharge control circuit 21 which is encapsulated in the sealing sheet and connected with the power-generation part and the charger, and regulates an input voltage from the power-generation part to the charging part.SELECTED DRAWING: Figure 3 |
