| 摘要 |
<p>PURPOSE:To provide a mislay preventing device for personal effects, by which mislaying and forgetting to return a carried thing can be prevented. CONSTITUTION:A mislay preventing device is fitted to personal effects such as a portable electronic device or the like and comprises radio wave transmitting members 1a, 1b, 1c for transmitting a radio wave 3 and a radio wave receiving device 2 for receiving radio waves 3 transmitted from the radio wave transmitting members 1a, 1b, 1c, respectively. The radio wave receiving device 2 comprises a radio wave receiving circuit for receiving a radio wave 3 through an antenna 7, and a buzzer for generating a sound when the radio wave 3 becomes smaller than a designated value. Further, lamps 6a, 6b, 6c corresponding to the radio wave transmitting members 1a, 1b, 1c are installed on the surface of the radio wave receiving device 2, and when the value of the radio wave 3 becomes smaller than a designated value, the buzzer sounds, and one of the lamps 6a, 6b, 6c is lighted or caused to go on and off.</p> |
