| 摘要 |
PROBLEM TO BE SOLVED: To provide an electric blind capable of suppressing electric power from an external power source required in an opening/closing operation. SOLUTION: A power circuit 34 includes a constant current circuit 66 which keeps the electric power supplied from the external power source to be a predetermined amount or less, and an electric double-layer capacitor 78 which is charged with the electric power supplied from the external power source. In the standby state of the electric blind, the electric double-layer capacitor 78 can be charged with the electric power which is supplied from the external power source. When opening/closing the electric blind, the opening/closing operation is performed by driving a motor 26 with the external electric power, which is supplied from the external power source and kept to the predetermined amount or the less by the constant current circuit 66, and the discharged electric power discharged from the electric double-layer capacitor 78. COPYRIGHT: (C)2011,JPO&INPIT
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