Miniature integrated omnidirectional LED bulb

  • US 10,605,412 B1
  • Filed: 11/16/2018
  • Issued: 03/31/2020
  • Est. Priority Date: 11/16/2018
  • Status: Active Grant
First Claim
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1. A miniature light emitting diode (LED) light bulb comprising:

  • a base portion including one or more electrical contacts arranged to mate with an electrical receptacle to receive electric current;

    an envelope portion comprising a substantially cylindrical body portion coupled to the base portion, a substantially cylindrical ceramic heat sink coupled to an inner circumference of the body portion, and a substantially cylindrical light diffusing portion coupled to an upper circumference of the body portion, the light diffusing portion and the body portion defining an interior portion of the envelope portion, the envelope portion being less than 50 mm in length and less than 20 mm in diameter; and

    ,an LED light assembly being housed in the interior portion of the envelope portion, the LED light assembly comprising a flexible printed circuit board, a plurality of LEDs being disposed on a surface of the flexible printed circuit board, the plurality of LEDs being electrically and thermally connected to comprise an LED array, and an electronics assembly being disposed on a surface of the flexible printed circuit board and comprising an LED driver and an integrated circuit being operably engaged with the one or more electrical contacts and the plurality of LEDs to provide power to the LED array, the LED array and the electronics assembly being operably configured to comprise a luminous efficiency of at least 90 lumens per watt, the flexible printed circuit board being folded at one or more plane axis to define a circumference when housed in the interior portion of the envelope portion.

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