US 12,471,251 B2
Optical transceiver
Mohammad Shahed Ahamed, Tokyo (JP); Yuji Saito, Tokyo (JP); Akihiro Takamiya, Tokyo (JP); and Tsuyoshi Ogawa, Tokyo (JP)
Assigned to Fujikura Ltd., Tokyo (JP)
Appl. No. 18/266,095
Filed by Fujikura Ltd., Tokyo (JP)
PCT Filed Oct. 26, 2021, PCT No. PCT/JP2021/039431
§ 371(c)(1), (2) Date Jun. 8, 2023,
PCT Pub. No. WO2022/149337, PCT Pub. Date Jul. 14, 2022.
Claims priority of application No. 2021-000705 (JP), filed on Jan. 6, 2021.
Prior Publication US 2023/0389232 A1, Nov. 30, 2023
Int. Cl. H05K 7/20 (2006.01); H04B 10/40 (2013.01)
CPC H05K 7/20336 (2013.01) [H04B 10/40 (2013.01)] 6 Claims
OG exemplary drawing
 
1. An optical transceiver comprising:
a case including:
a lower case having a box-like shape and an upper opening;
an upper case that closes the upper opening; and
a heat sink disposed on an upper surface of the upper case;
one or more heat generating bodies disposed in the lower case;
one or more heat conducting portions protruding from an inner wall surface of the upper case and thermally contacting the one or more heat generating bodies; and
a heat pipe, disposed in a groove in the inner wall surface of the upper case, that transfers heat from the one or more heat conducting portions to the heat sink, wherein
the heat pipe includes:
an accommodation portion disposed in the groove; and
a protruding portion protruding from the groove and including the one or more heat conducting portions, and
the protruding portion is disposed in an internal space enclosed by the lower case and the upper case.