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Cooling device capable of reducing thickness of electronic apparatus

  • US 7,019,970 B2
  • Filed: 05/04/2005
  • Issued: 03/28/2006
  • Est. Priority Date: 09/17/2001
  • Status: Expired due to Term
First Claim
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1. A printed circuit board unit designed to be accommodated within an enclosure of an electronic apparatus, comprising:

  • a printed circuit board;

    a ventilation fan coupled to the printed circuit board for relative rotation to the printed circuit board, said ventilation fan having a rotation axis and a direction of said rotation axis intersecting the printed circuit board;

    a housing wall standing from a surface of the printed circuit board at a periphery of the ventilation fan;

    a ceiling wall connected to an upper end of the housing wall and extending along a datum plane parallel to the surface of the printed circuit board;

    an inlet defined in the ceiling wall;

    an outlet defined in the housing wall;

    an electronic component mounted on the printed circuit board; and

    an electrically conductive wiring pattern extending over the surface of the printed circuit board inside the housing wall and connected to the electronic component.

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