Patent ID: 7492597
Filing Date: 2009-02-17
Classification: H02M,H05K

Abstract:
1. A power adapter comprising: a housing, said housing comprising a bottom cover shell and a top cover shell covering said bottom cover shell, said bottom cover shell having an inside space and an air passage extending through two opposite sides thereof and dividing said inside space into a first accommodation chamber and a second accommodation chamber, said top cover shell having at least one exhaust port adapted to guide circulation of outside cooling air through said air passage; a printed circuit board mounted in said inside space inside said bottom cover shell of said housing and carrying a set of electronic component parts; a first heat dissipation means mounted in said first accommodation chamber; a second heat dissipation means mounted in said second accommodation chamber; and a spacer mounted in said air passage and tightly set between said first heat dissipation means and said second heat dissipation means; wherein said first heat dissipation means and said second heat dissipation means respectively absorb heat from the electronic component parts of said printed circuit board in said first accommodation chamber and said second accommodation chamber for enabling absorbed heat to be carried to the outside of said housing by outside cooling air passing through said at least one exhaust port and said air passage; and said first accommodation chamber is smaller than said second accommodation chamber.