Solid state lamp
Light-responsive light-emitting diode display
Light emitting diode lamp and method for producing thereof Patent #: 4630183
ApplicationNo. 06/887374 filed on 07/17/1986
US Classes:315/71, Load device and impedance313/498, Solid-state type313/500, Matrix or array315/185R, PLURAL SERIES CONNECTED LOAD DEVICES315/250, Plural load device systems315/312, PLURAL LOAD DEVICE SYSTEMS315/53, Diverse types of impedances362/800LIGHT EMITTING DIODE
ExaminersPrimary: Boudreau, Leo H.
Assistant: Powell, Mark R.
Attorney, Agent or Firm
International ClassF21K 7/00 (20060101)
Foreign Application Priority Data1985-07-22 JP
AbstractThe 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.