Light bulb shaped lamp

  • US 10,533,712 B2
  • Filed: 06/30/2017
  • Issued: 01/14/2020
  • Est. Priority Date: 07/20/2010
  • Status: Active Grant
First Claim
Patent Images

1. A light emitting module comprising:

  • an elongated base board having a first end and a second end at opposed ends of a longitudinal direction of the base board, a first surface, a second surface opposing the first surface and side surfaces extending in the longitudinal direction of the base board;

    first and second conductive members provided at the first end and the second end on the first surface of the base board, and extending beyond the first and second ends of the base board in the longitudinal direction of the base board;

    first and second power supply terminals respectively provided at the first end and the second end of the base board, and extending transverse to the longitudinal direction of the base board, the first and second power supply terminal electrically connected to the first and second conductive members, respectively;

    a plurality of light-emitting diodes provided on the first surface of the base board arranged in a line parallel to the longitudinal direction of the base board and between the first conductive member and the second conductive member, the plurality of light-emitting diodes being connected in series by wires such that each light-emitting diode is connected to an adjacent light-emitting diode;

    end wires that connect longitudinal extremities of the plurality of light-emitting diodes to the first and second conductive members; and

    an elongated seal including a wavelength conversion material, the elongated seal enclosing all of the plurality of light-emitting diodes,wherein the light emitting module has an elongated shape,the elongated seal including the wavelength conversion material contacts all of the plurality of light-emitting diodes, anda cross-section of the elongated seal, that covers the first surface and the side surfaces of the base board, has a semicircular shape that is uniform along the longitudinal direction of the base board.

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