Title:
HEAT SINK
Document Type and Number:
Japanese Patent JP3512249
Kind Code:
B2
Abstract:
PURPOSE: To provide a high-durability heat sink, which can absorb efficiently heat from a radiator and can be easily manufactured.
CONSTITUTION: A beam emitted from an LD bar 12 placed on a radiator 11 is emitted via a microlens 13. A water channel formed in the interior of the radiator 11 is constituted of a pressing water channel 14, a cooling part 15 and a discharge water channel 16. A puddle part 14a is formed in the end part of the water channel 14. A plurality of small holes 17 are formed in this puddle part 14a along the arrangement direction of the LD bar 12. A roughened surface 15a is formed in an on the cooling part 15 in the vicinity of the LD bar 12. The remaining cavity part of the radiator 11 constitutes the discharge water channel 15. Cooling water jetted through the small holes 17 is sprayed on the part 15 at a high pressure and heat transferred from the LD bar 12 to the cooling part 15 is effectively absorbed in this cooling water.
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Inventors:
Nakai, Sadao
Yamanaka, Masanori
Miyajima, Hirobumi
Kanzaki, Takeshi
Suga, Hirobumi
Yamanaka, Masanori
Miyajima, Hirobumi
Kanzaki, Takeshi
Suga, Hirobumi
Application Number:
JP27357094A
Publication Date:
March 29, 2004
Filing Date:
November 08, 1994
Export Citation:
Assignee:
HAMAMATSU PHOTONICS KK
Nakai, Sadao
Nakai, Sadao
International Classes:
H05K7/20; H01L23/473; (IPC1-7): H05K7/20; H01L23/473
Attorney, Agent or Firm:
長谷川 芳樹 （外３名）