| 摘要 |
PURPOSE:To obtain a high heat radiation effect by constituting the heat sink with the first heat sink containing the cavity and the second heat sink pasted together and raising up the refrigerant within the cavity via the capillary phenomenon to be gasified. CONSTITUTION:Heat radiation device 1 is constituted with first heat sink 1a containing the cavity and second heat sink 1b pasted together. Then heat radiated substance containing a number of electric parts to be cooled down is attached to heat sink 1b of one side via screw 3, and lead wire 5 supplied from heat radiated substance 3 is connected to print substrate 4. And device 1 is attached tight to the end part of machine chassis 6 with screw 7 and via the angle. In such constitution, heat sink 1b is made flat and heat sink 1a opposing to 1b is made uneven in order to secure the cavity to the heat sink. Thus refrigerant 8 is intruded into the cavity caused by the concavity and then gasified there to cool down the two heat sinks effectively. |
