To provide a marine buoy capable of allowing a light emitter to continuously emit light without being influenced by weather condition.
The marine buoy is equipped with a power monitoring controller mounted on a buoy body, a wave power generation device which is mounted to the buoy body so as to be connected to the power monitoring controller, a solar energy generation device mounted to the buoy body so as to be connected to the power monitoring controller, an electric discharge controller mounted to the buoy body so as to connected to the power monitoring controller, the light emitter mounted to the buoy body so as to be connected to the electric discharge controller, a capacitor which is mounted to the buoy so as to be connected to the power monitoring controller and discharges the power of large current, and a lithium ion secondary battery which is mounted to the buoy body so as to be connected to the capacitor, connected to the discharge controller through a switch, and has an anode containing lithium titanium oxide as a negative electrode active material, and an electrolysis solution containing γ-butyl lactone. The electric discharge controller detects the electric energy supplied from the power monitoring controller, and has a function for turning on the switch when the detected electric energy is less than the electric energy required for enabling the light emitter to emit the light.
COPYRIGHT: (C)2007,JPO&INPIT
Satoshi Kono
Makoto Nakamura
Kurata Masatoshi
Takashi Mine
Yoshihiro Fukuhara
Sadao Muramatsu
Ryo Hashimoto