| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a security light capable of improving public security by maintaining safety of passers-by since maintenance cost of the security light is not necessary in principle, purchasing cost and installation cost of the security light can be covered, installation of the security light is accelerated, dark places can be removed with night illumination and crimes that happens in the dark places can be prevented; and to provide its control system. <P>SOLUTION: In the security light and its control system, a variable advertisement display device made of a solar cell panel, and an electronic paper display that uses the solar cell panel as a power source is arranged on a support. <P>COPYRIGHT: (C)2010,JPO&INPIT |
