04727289 is referenced by 297 patents and cites 4 patents.

The present invention provides a light-emitting diode lamp having a printed circuit board which is arranged inside a glass bulb having a base at an end thereof, via a stem and stays. A plurality of light-emitting diodes are mounted on the printed circuit board, a current being supplied to the light-emitting diodes through a series resistor. The series resistor has an annular shape and is fitted around the stem, so that a conventional lower-voltage LED lamp can be upgraded to a 100-V LED lamp.

Title
LED lamp
Application Number
6/887374
Publication Number
4727289
Application Date
July 17, 1986
Publication Date
February 23, 1988
Inventor
Akio Uchida
Tokyo
JP
Agent
Frishauf Holtz Goodman & Woodward
Assignee
Stanley Electric
JP
IPC
H05B 41/00
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