| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a durable LED display unit that uses a piezoelectric element to light a number of illumination LEDs provided at a shoe sole, in which a piezoelectric generator causes the LEDs to emit highly bright light with small stress though it has a small size. <P>SOLUTION: The LED display unit provided at a shoe sole uses the piezoelectric generator in Fig.1 and Fig.2 (not shown) so that large stress is applied to the piezoelectric element even at a small load. The piezoelectric element is thin, and does not cause the feeling of strangeness, generates a high voltage and a large charge amount, and causes a number of LEDs to emit highly bright light. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
