Patent ID: 6490159
Filing Date: 2002-12-03
Classification: H05K

Abstract:
A circuit board assembly comprising:a first circuit portion in which an amount of heat is generated, wherein said first circuit portion includes a first and a second conductive layer and a core layer which is disposed between said first and second conductive layers; a heat pipe which is integrally formed within said core layer of said first circuit portion, wherein said heat pipe comprises a plurality of elongated fin members which extend longitudinally within said heat pipe; an amount of fluid which is disposed within said heat pipe; and a heat pump comprising an acoustic transducer which is effective to produce sound waves at a resonant frequency which are transferred to said amount of fluid, and a diaphragm which is effective to transfer said sound waves to said amount of fluid, wherein said heat pump is operatively disposed within first circuit portion and which communicates with said heat pipe and said amount of fluid, said heat pump being effective to produce pressure fluctuations within said amount of fluid, thereby causing said amount of fluid to circulate within said heat pipe and dissipate said amount of heat.