LED light bulb

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United States of America Patent

PATENT NO 8955996
SERIAL NO

13711000

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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In one embodiment, an LED light bulb includes an LED module, a base portion on which the LED module is disposed, and a globe attached to the base portion. The LED module includes an ultraviolet to violet light-emitting LED chip mounted on a substrate. A lighting circuit and a bayonet cap are provided in and on the base portion. A fluorescent film is provided on an inner surface of the globe, and emits white light by absorbing ultraviolet to violet light emitted from the LED chip. The fluorescent film has a film thickness in a range of 80 to 800 μm. In the LED light bulb, an amount of ultraviolet light which leaks from the globe is 0.1 mW/nm/lm or less.

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Patent Owner(s)

Patent OwnerAddress
SEOUL SEMICONDUCTOR CO LTD97-11 SANDAN-RO 163BEON-GIL DANWON-GU ANSAN-SI GYEONGGI-DO 15429

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nakagawa, Katsutoshi Yokohama, JP 27 323
Ooya, Yasumasa Chigasaki, JP 38 449
Shirakawa, Yasuhiro Yokohama, JP 70 742
Yamakawa, Masahiko Yokohama, JP 38 481

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