| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem wherein efficient exchange of an LED illumination lamp is difficult at a location where numerous LED illumination lamps are arranged since the LED illumination lamp has longer life and is gradually darker due to its deterioration and further, there is something felt wrong with the LED illumination lamp having directivity in one way in light emission of an LED light-emitting element used in the LED illumination lamp in comparison with directivity in light emission of a conventional incandescent bulb to a spherical surface.SOLUTION: Progressions of lighting-up time of LED light-emitting elements of each LED illumination lamp is memorized by calculating. Efficient exchange can be performed on the basis of memory of its lighting-up time. A control circuit capable of calculating is built in, and the LED light-emitting elements of the LED illumination lamp are mounted to make them face a light-emitting direction to the whole spherical surface. Illumination direction taking advantage of characteristics of the LED light-emitting elements and an intelligent LED illumination lamp lighting up by a timer and a position time measured with directions of a GPS can be attained by assembling the control circuit in the LED illumination lamp since the LED light-emitting elements of the LED illumination lamp are various and a control method for the LED light-emitting elements is simple. |
