| 摘要 |
A radiator has an improved heat dissipation capability. Therefore, when the radiator is installed in a limited space, a sufficient heat dissipation capability can be secured. A radiator comprises: a header (50) including a supply room (50A) for a coolant to cool electronic parts mounted on a circuit board and a discharge room (50B) partitioned from the supply chamber; and a plurality of tubes (51) stacked in a height direction of the header, wherein one end of each of the plurality of tubes is connected to the supply chamber and the other end is connected to the discharge chamber while the coolant flows from the one end to the other end. The plurality of tubes includes a first tube (51X) including at least the lowermost tube, and a second tube (51Y) provided over the first tube and having a surface area greater than that of the first tube (51X). |
