| 摘要 |
PURPOSE: An electricity saving device for a smart grid is provided to automatically control a power supply of a lighting device according to current electricity costs in a smart grid environment, or display the current electricity costs as a visual means. CONSTITUTION: A power source displaying terminal(10) is connected to an external on/off inputting unit(30). The power source displaying terminal controls a power source supplied through the external on/off inputting unit. The power source displaying terminal includes a costs information communicating unit(11) and a cost displaying unit(12). The costs information communicating unit connects to an electricity costs information device(20) as a communication means, and receives electricity costs information. The cost displaying unit displays the electricity costs information received from the costs information communicating unit by a visual type. [Reference numerals] (11) Costs information communicating unit; (12) Cost displaying unit; (13) Power controlling unit; (14) Sensor unit; (15) Warning unit; (16) Central controlling unit; (20) Cost information providing device; (30) External on/off inputting unit; (40) Lighting device; (AA) Power input
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