摘要 |
<p>The device has a printed circuit board (1) comprising a rechargeable lithium battery (2) and an input charging jack (4). The printed circuit board is connected to flexible and thin electroluminescent sheets (3) and a switch e.g. push-button switch, via connection wires (5, 7) of different lengths, where the sheets have different shapes and colors. The battery provides sufficient energy to light the electroluminescent sheets, when the switch is actuated, where the switch is switched between open and closed positions.</p> |