초록 ▼

A lighting equipment adapted for outdoor location, the equipment being supported on a structure on which a solar cell is placed to charge up a battery for lighting a lamp, wherein the battery and the lamp are provided in the structure, the lamp being lit from the sunset up to the expiry of a predete

A lighting equipment adapted for outdoor location, the equipment being supported on a structure on which a solar cell is placed to charge up a battery for lighting a lamp, wherein the battery and the lamp are provided in the structure, the lamp being lit from the sunset up to the expiry of a predetermined period of time.

대표청구항 ▼

An outdoor lighting equipment to light a lamp with the power source obtained from a solar cell provided therein, the outdoor lighting equipment comprising: a battery for storing the electric energy converted from solar energy by said solar cell; a first circuit connecting between said battery and sa

An outdoor lighting equipment to light a lamp with the power source obtained from a solar cell provided therein, the outdoor lighting equipment comprising: a battery for storing the electric energy converted from solar energy by said solar cell; a first circuit connecting between said battery and said solar cell so as to charge up said battery under a potential difference therebetween; a second circuit allowing a current to flow from said battery to light said lamp; a power switch for opening and closing the path of said current from said battery to said lamp; a logical operation circuit adapted to produce a sunset signal in response to a voltage drop taking place in said solar cell because of the shortage of sunlight; a timer adapted to set a period of time during which said current from said battery to said lamp is kept flowing, said timer being driven by said current, and outputting a switching-off signal to make said power switch turn off at the expiration of said period of time; and overdischarge preventing means for preventing the battery from overdischarging during extended periods of cloudy weather comprising a voltage drop detector for detecting a drop in the terminal voltage of said battery below a predetermined value and providing a low voltage signal in response to said detection, whereby said battery is protected against becoming overdischarged by supplying a current beyond its capacity; control means for turning on said power switch in response to said sunset signal and turning off said power switch in response to said switching off signal or said low voltage signal.