| 摘要 |
PURPOSE: An advertising device using electromagnetic wave generated in a radio frequency (RF) terminal is provided to be easily attached to an RF terminal for being operated using electromagnetic wave transmitted from the RF terminal as an energy source, thereby effectively providing advertisements without needing a separate energy source. CONSTITUTION: An advertising device using RF electromagnetic wave comprises an energy conversion coil part (20) which has an empty central portion having a plane doughnut shape to be attachable to an RF terminal and converts electromagnetic wave generated in an RF terminal into electricity by electromagnetic induction; a power extension line (20) to deliver the electricity generated by the energy conversion coil part to a position far from the energy conversion coil part; and an advertising board member (40) which is connected to the power extension line to be driven by the electricity generated by the energy conversion coil part and has the back surface coated with an adhesive to be capable of being adhered to a position. |
