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1. (WO2018138936) HEAT SINK

Pub. No.:    WO/2018/138936    International Application No.:    PCT/JP2017/010978
Publication Date: Fri Aug 03 01:59:59 CEST 2018 International Filing Date: Sat Mar 18 00:59:59 CET 2017
IPC: H05K 7/20
H01L 23/473
F28D 15/02
Applicants: MITSUBISHI ELECTRIC CORPORATION
三菱電機株式会社
Inventors: ARATA Kazuki
新 一貴
TAMURA Masayoshi
田村 正佳
Title: HEAT SINK
Abstract:
Provided is a heat sink, wherein: a first radiating fin (12) having a low fluid resistance and formed in a pin shape is disposed in a region requiring high cooling performance; and a second radiating fin (13) having a high fluid resistance and having a shape in which a plurality of rows of zigzag meandering grooves are arranged at a narrow pitch is disposed in a region not requiring high cooling performance. Furthermore, the first radiating fin (12) and the second radiating fin (13) are arranged in parallel to the direction of flow of a coolant.