| 摘要 |
A blackout light bulb has a housing with an Edson screw at one end for screwing into a light fixture socket and a plurality of spaced apart LEDs mounted to its opposite end. A flexible stalk is connected to the housing between the Edison screw and the LEDs and can be bent into a selected shape for positioning a free end of the stalk as desired. A circuit board in the housing has an electronic circuit connected to the Edison screw, to the LEDs and to a photo cell at the free end of the stalk. A rechargeable battery in the housing is connected to the circuit board so that it is charged under certain normal conditions and so that it lights up the LEDs under other blackout conditions. |
