A junction box is affixed to, and electrically coupled with, a solar panel. The present invention can realize at least one of lowered driving voltage, enlarged operating temperature range, decrease in electric power consumption and wide display maintaining temperature range, in a liquid crystal display element having a semi-permanent display maintaining function. After medicine is injected, the spinal needle and the epidural needle are withdrawn in turn, at the same time the epidural catheter is left back. The prism face is provided distant from an end face of the intermediate light guide close to the light emitting element. The fluid is then ejected out of a number of nozzles of the nozzle member into the tank to create visually appealing streams and bubbles, accompanied by the musical sound the lighting effects from the base. The third ROM code with threshold voltage Vt3 is performed with one Vt implantation and has a thick gate oxide layer.