# US 11,122,711 B2 · Electronic apparatus and electronic unit

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- Number: US 11,122,711 B2
- Document ID: US11122711B2
- Status: Granted
- Kind: B2
- Application number: 16/838,063
- Filed: 2020-04-02
- Published: 2020-10-15
- Granted: 2021-09-14
- Earliest claimed: 2019-04-10
- Assignees: Fujitsu Limited
- Applicants: Fujitsu Limited
- Inventors: Tetsuhiro Kinoshita; Takashi Urai
- Web page: https://patentgrep.com/patent/US11122711B2

## CPC

- H05K 7/20727: {within server blades for removing heat from heat source}
- H05K 7/1487: {Blade assemblies, e.g. blade cases or inner arrangements within a blade}
- H05K 7/20145: {Means for directing air flow, e.g. ducts, deflectors, plenum or guides}
- H05K 7/20172: {Fan mounting or fan specifications}
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS

## Abstract

An electronic unit to be stored in a first storage section of an electronic device that includes the first storage section on a first side and a second storage section on a second side opposite to the first side, the electronic unit includes a first board on which a first heating element is mounted; a first connector disposed at an end on the first side of the first board; and a duct disposed at the end on the first side of the first board, the duct having a guide surface that guides wind to the first heating element as a fan of the electronic device operates.

## Claims

### Claim 1

An electronic apparatus comprising:
a first unit;
a second unit; and
an electronic device that includes a first storage section in which the first unit is stored and a second storage section in which the second unit is stored, the first storage section being provided on a first side, the second storage section being provided on a second side opposite to the first side,
the first unit includes:
a first board on which a first heating element is mounted; and
a first connector disposed at an end on the first side of the first board,
the second unit includes:
a second board on which second heating element is mounted; and
a second connector disposed at an end on the second side of the second board,
the electronic device includes:
a relay board disposed to face the first board and the second board;
a first relay connector disposed at an end on the first side of the relay board and connected to the first connector;
a second relay connector disposed at an end on the second side of the relay board and connected to the second connector; and
a fan mounted on the relay board, located between the first board and the second board, and configured to operate to send wind from the first side to the second side of the electronic device, and a duct is disposed at the end on the first side of the relay board or at the, end on the first side of the first board, the duct having a guide surface that guides the wind to the first heating element as the fan operates,
the first relay connector or the first connector includes a connector case, and the duct is formed integrally with the connector case.

### Claim 2 (depends on 1)

The electronic apparatus according to claim 1, wherein a pair of the ducts is disposed on both sides of the first relay connector a width direction of the first relay connector on the relay board or on both sides of the first connector in a width direction of the first connector on the first board.

### Claim 3 (depends on 1)

The electronic apparatus according to claim 1, wherein the electronic device includes a housing including a bottom wall and a top wall, and the relay board is disposed along the bottom wall, and is fixed on the bottom wall.

### Claim 4

An electronic unit to be stored in a first storage section of an electronic device that includes the first storage section on a first side and a second storage section on a second side opposite to the first side, the electronic unit comprising:
a first board on which a first heating element is mounted;
a first connector disposed at an end on the first side of the first board; and
a duct disposed at the end on the first side of the first board, the duct having a guide surface that guides wind to the first heating element as a fan of the electronic device operates,
the first relay connector or the first connector includes a connector case, and the duct is formed integrally with the connector case.