公开(公告)号：US20230269910A1

公开(公告)日：2023-08-24

申请号：US18308501

申请日：2023-04-27

Applicant: Furukawa Electric Co., Ltd.

Inventor： Kenya KAWABATA ,  Yoshikatsu INAGAKI ,  Hirofumi AOKI ,  Hiroshi OKADA ,  Yosuke WATANABE ,  Hideaki KAWABATA

IPC: H05K7/20

CPC classification number: H05K7/20336

Abstract: A vapor chamber including a container having a cavity portion formed inside, and including a first surface and a second surface opposing the first surface, a working fluid sealed in the cavity portion, and a vapor flow path through which the working fluid in a gas phase flows, the vapor flow path being provided in the cavity portion, wherein a container inner surface area increasing unit including a protruding part is formed on an inner surface of the first surface, and a first wick structure is provided on a surface of the protruding part.

公开(公告)号：US20250089217A1

公开(公告)日：2025-03-13

申请号：US18956496

申请日：2024-11-22

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Yosuke WATANABE

IPC: H05K7/20

Abstract: The heat sink including a base plate and a plurality of plate-like radiating fins, wherein the plate-like radiating fins have a fin base portion that extends from one end to another end of the plate-like radiating fin, and a twisted portion that is provided in a height direction of the plate-like radiating fin from the fin base portion, and inclines in a main front surface direction of the base plate, and the twisted portion has a planar region defined by a twist start portion that linearly stretches from the fin base portion, one end portion that is at least a part of the one end facing the twist start portion and inclines at an angle θ1, and a fin tip portion that is at least a part of a fin tip facing the fin base portion, and inclines at an angle θ2 with respect to the fin base portion.

公开(公告)号：US20210007246A1

公开(公告)日：2021-01-07

申请号：US17027182

申请日：2020-09-21

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Yosuke WATANABE ,  Kenya KAWABATA ,  Yoshikatsu INAGAKI ,  Tatsuro MIURA ,  Kazuaki AOTANI ,  Toshiaki NAKAMURA

IPC: H05K7/20

Abstract: The present disclosure provides a heatsink that can improve heat radiation efficiency of a heat radiating fin and equalize a heat input in a heat receiving portion while securing sufficient volumes of the heat receiving portion, a heat insulating portion, and a heat radiating portion even in an environment in which an installation space for the heatsink, more specifically, an installation space in a width direction of the heatsink is limited.
A heatsink including: a heat transport member having a heat receiving portion thermally connected to a heating element; and a heat radiating fin group which is thermally connected to a heat radiating portion of the heat transport member and in which a plurality of heat radiating fins is arranged, wherein the heat transport member has an integral internal space that communicates from the heat receiving portion to the heat radiating portion and that is filled with a working fluid, and a cross-sectional area of an internal space in a direction orthogonal to a heat transport direction of the heat transport member in the heat radiating portion is larger than the cross-sectional area in a heat insulating portion between the heat receiving portion and the heat radiating portion.

公开(公告)号：US20200173731A1

公开(公告)日：2020-06-04

申请号：US16779286

申请日：2020-01-31

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Kenya KAWABATA ,  Yasumi SASAKI ,  Yosuke WATANABE

IPC: F28D15/04 ,  F28D15/02 ,  H05K7/20

Abstract: An object of the present disclosure is to provide a heat sink that can equalize heat input in a heat receiving portion and increase a volume of the heat receiving portion, prevent an increase in heat resistance in the heat receiving portion even when a heat generation amount from a heat-generating element increases, and exhibit excellent cooling performance with respect to a cooling target.There is provided a heat sink including: a heat transport member having a heat receiving portion thermally connected to a heat-generating element; a tube body connected to a heat insulating portion or a heat radiating portion of the heat transport member; and a heat radiation fin group which is thermally connected to the tube body and in which a plurality of heat radiation fins are arranged, in which the heat transport member has an integral internal space that communicates from the heat receiving portion to a connection portion with the tube body and is sealed with a working fluid, and the internal space of the heat transport member communicates with an internal space of the tube body.

公开(公告)号：US20240260234A1

公开(公告)日：2024-08-01

申请号：US18426022

申请日：2024-01-29

Applicant: Furukawa Electric Co., Ltd.

Inventor： Yosuke WATANABE ,  Hirofumi AOKI

IPC: H05K7/20

CPC classification number: H05K7/2039

Abstract: The heat sink includes a heat transport member having an evaporation portion to be thermally connected to a heat-generating element, a tube body which is connected to a connection portion located in a condensation portion of the heat transport member, and a heat radiation fin group which is thermally connected to the tube body, in which the heat transport member has an integral internal space, the internal space of the heat transport member communicates with an internal space of the tube body via the connection portion, the tube body has a circular portion in which a shape in a radial direction is a circular shape, and a flat portion in which a shape in the radial direction is a flat shape, the circular portion is located in the connection portion, and the flat portion is located in a part to which the heat radiation fin group is thermally connected.

公开(公告)号：US20230408214A1

公开(公告)日：2023-12-21

申请号：US18459905

申请日：2023-09-01

Applicant: Furukawa Electric Co., Ltd.

Inventor： Yosuke WATANABE

IPC: F28F3/04 ,  F28D15/02

CPC classification number: F28F3/04 ,  F28D2021/0029 ,  F28D15/02

Abstract: A heat sink including a plurality of plate-like radiating fins erected on a base plate at a predetermined erection angle θ1 with respect to an extending direction of the base plate. The radiating fins each has: a fin base portion that extends from one end to another end in a width direction of the radiating fin; a perpendicular portion that extends from one end of the fin base portion to a fin tip portion of the radiating fin on a same plane as the fin base portion; an inclined portion that extends from the perpendicular portion to the other end at a predetermined inclination angle θ2 with respect to the fin base portion and the perpendicular portion and extends from the fin tip portion to a fin intermediate portion; and a twisted portion that connects the fin base portion, the perpendicular portion, and the inclined portion.

公开(公告)号：US20200173730A1

公开(公告)日：2020-06-04

申请号：US16779146

申请日：2020-01-31

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Yosuke WATANABE ,  Tatsuro MIURA ,  Toshiaki NAKAMURA ,  Kenya KAWABATA ,  Yoshikatsu INAGAKI

IPC: F28D15/04 ,  F28F9/22 ,  F28D15/02 ,  H05K7/20 ,  F28D21/00

Abstract: The present disclosure is to provide a heat sink capable of improving cooling efficiency of a heat radiation fin and exhibiting excellent cooling performance with respect to a cooling target regardless of an installation posture of the heat sink, and capable of being installed even in a narrow space.The heat sink includes: a heat transport member having a heat receiving portion thermally connected to a heat-generating element and including a first wick structure; a tube body connected to a heat insulating portion or a heat radiating portion of the heat transport member and including a second wick structure; and a heat radiation fin group which is thermally connected to the tube body and in which a plurality of heat radiation fins are arranged, in which, the heat transport member has an integral internal space that communicates from the heat receiving portion to a connection portion with the tube body and is sealed with a working fluid, the internal space of the heat transport member communicating with an internal space of the tube body, and the first wick structure includes a branch portion branched in a thickness direction of the heat transport member and multi-stage stem parts extending from the branch portion in a predetermined direction.

公开(公告)号：US20240410657A1

公开(公告)日：2024-12-12

申请号：US18812333

申请日：2024-08-22

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Yosuke WATANABE ,  Hirofumi AOKI

IPC: F28D15/02 ,  F28D15/04 ,  F28D21/00

Abstract: The heat transport device includes a first wick structure provided in the internal space of the first heat transport section, and extending from the evaporation section to the condensation section, a second wick structure provided on an inner surface of the second heat transport section, and extending along the heat transport direction of the second heat transport section, and a reflux promoting body provided on the second wick structure, extending along the heat transport direction of the second heat transport section, and having a capillary force, wherein a capillary force of the first wick structure is larger than the capillary force of the reflux promoting body, and the capillary force of the reflux promoting body is larger than a capillary force of the second wick structure, or the capillary force of the reflux promoting body is equal to the capillary force of the second wick structure.