摘要 |
A heat diffusing device includes first and second metallic thin plates that are alternately laminated to each other, and that are joined along with an upper sealing metallic thin plate and a lower sealing metallic thin plate by diffusion joining so as to form a sealed space in an interior defined by the first and second thin plates and the upper and lower sealing metallic thin plates. A C-shaped groove defined by a steep wall face is formed at a wall face defining the sealed space due to a difference (Deltaw) between the dimensions of the first metallic thin plates and the dimensions of the second metallic thin plates.
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