# US 2025/0146501 A1 · Neck fan

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- Number: US 2025/0146501 A1
- Document ID: US20250146501A1
- Status: Published application
- Kind: A1
- Application number: 19/017,846
- Filed: 2025-01-13
- Published: 2025-05-08
- Earliest claimed: 2019-10-25
- Assignees: Xiangfu LI; Guanzheng ZHENG; Jiahang XIE; Shenzhen Jisu Technology Co., Ltd
- Applicants: Shenzhen Jisu Technology Co., Ltd
- Inventors: Jiahang XIE; Guanzheng ZHENG; Xiangfu LI
- Web page: https://patentgrep.com/patent/US20250146501A1

## CPC

- F04D 25/166: {using fans}
- A61F 7/00: Heating or cooling appliances for medical or therapeutic treatment of the human body (hyperthermia using electric or magnetic fields or ultrasound A61N)
- A61F 7/02: Compresses or poultices for effecting heating or cooling
- F04D 17/16: for displacing without appreciable compression
- F04D 19/002: {Axial flow fans}
- F04D 25/08: the working fluid being air, e.g. for ventilation
- F04D 25/084: {hand fans}
- F04D 29/4213: {suction ports}
- F04D 29/4226: {Fan casings}
- F04D 29/424: {Double entry casings}
- F04D 29/4246: {comprising more than one outlet}
- F04D 29/441: {especially adapted for elastic fluid pumps}
- A61F 2007/0011: {Neck only}
- A61F 2007/0059: {with an open fluid circuit}
- A61F 2007/006: {of gas}
- A61F 2007/0063: {for cooling}
- A61F 2007/0064: {of gas}
- A61F 2007/0067: {of sweat}
- F04D 25/0673: {Battery powered}
- F04D 29/005: {Decorative aspects, i.e. features which have no effect on the functioning of the pump}
- F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02)
- A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C)

## Abstract

A neck fan is provided and is configured to be worn around a neck of a user. The neck fan includes: an outer shell, disposed away from the neck; an inner shell, connected to the outer shell and disposed near the neck, wherein the inner shell and the outer shell cooperatively define a receiving space. A plurality of air outlets are defined in the inner shell.

## Claims

### Claim 1

A neck fan, configured to be worn around a neck of a user, the neck fan comprising:
an outer shell, disposed away from the neck;
an inner shell, connected to the outer shell and disposed near the neck, wherein the inner shell and the outer shell cooperatively define a receiving space;
wherein, a plurality of air outlets are defined in the inner shell; the plurality of air outlets are spaced apart from each other and are distributed along an extending direction of the inner shell;
the neck fan has two free ends and a rear portion, the rear portion is configured to be disposed at a rear side of the neck; along an extending direction of the inner shell from each of the two free ends to the rear portion, cross-sectional areas of the plurality of air outlets are decreased.

### Claim 2 (depends on 1)

The neck fan according to claim 1, wherein, the inner shell has a curved outer surface, comprising an inner portion and an upper portion;
the inner portion faces towards the neck, a direction in which the upper portion faces is tilted relative a direction in which the inner portion faces.

### Claim 3 (depends on 2)

The neck fan according to claim 2, wherein,
the plurality of air outlets are located at the upper portion or at a portion where the upper portion and the inner portion connect to each other.

### Claim 4 (depends on 1)

The neck fan according to claim 1, wherein,
along the extending direction of the neck fan, a distance from one of the two free ends and the rear portion is equal to a distance from the other one of the two free ends and the rear portion;
the two free ends are configured to be disposed at two sides of the neck; and
the plurality of air outlets are distributed from each of the two free ends to the rear portion.

### Claim 5 (depends on 1)

The neck fan according to claim 1, wherein,
the inner shell further defines air inlets;
an air duct is formed inside the outer shell and the inner shell;
the air inlets, the air duct, and the plurality of air outlets are communicated to each other to enable air to flow from the air inlets, flowing along the air duct, to reach the plurality of air outlets to be output out of the neck fan.

### Claim 6 (depends on 5)

The neck fan according to claim 5, wherein, at least two fans are received in the receiving space and are arranged corresponding to the air inlets to intake air from an outside of the neck fan through the air inlets.

### Claim 7 (depends on 6)

The neck fan according to claim 6, further comprising a partition plate received in the receiving space;
the air duct is defined by the inner shell, the outer shell, and the partition plate.

### Claim 8 (depends on 1)

The neck fan according to claim 1, wherein each of the inner shell and the outer shell is an integrally-formed one-piece structure, and the inner shell and the outer shell are detachably assembled to each other to cooperatively define the receiving space.

### Claim 9 (depends on 8)

The neck fan according to claim 8, further comprising a partition plate, received in the receiving space, wherein, at least a portion of the partition plate is integrally formed with the inner shell.

### Claim 10 (depends on 9)

The neck fan according to claim 9, wherein, the partition plate divides the receiving space into: an air duct in which air is capable of flowing; and a receiving duct.

### Claim 11 (depends on 10)

The neck fan according to claim 10, further comprising: at least two fans;
wherein, one of the outer shell and the inner shell has a curved surface to define a shell chamber serving as at least part of the receiving space;
the at least two fans are pressed to the one of the outer shell and the inner shell that defines the shell chamber and is received in the shell chamber;
the other one of the outer shell and the inner shell covers an exposed side of the at least two fans.

### Claim 12 (depends on 11)

The neck fan according to claim 11, wherein, the one of the outer shell and the inner shell that defines the shell chamber is the inner shell, and the at least two fans are pressed to the inner shell.

### Claim 13 (depends on 12)

The neck fan according to claim 12, wherein, the curved surface of the inner shell has an inner portion and a side portion;
the inner portion faces towards the neck, a direction in which the side portion faces is tilted relative a direction in which the inner portion faces;
each of the at least two fans has a first air intaking port, a second air intaking port opposite to the first air intaking port, and a side portion connecting between the first air intaking port and the second air intaking port;
the first air intaking port and the side portion of the fan are received in the shell chamber, and the second air intaking port is exposed from the shell chamber.

### Claim 14 (depends on 13)

The neck fan according to claim 13, wherein the inner portion of the inner shell defines air inlets corresponding to the first air intaking port of the fan, and the fan is configured to intake air from the outside of the neck fan through the air inlets to the first air intaking port.

### Claim 15 (depends on 14)

The neck fan according to claim 14, wherein the outer shell defines air inlets corresponding to the second air intaking port of the fan.

### Claim 16 (depends on 11)

The neck fan according to claim 11, wherein, the air duct serves as at least a portion of the shell chamber;
each of the at least two fans has an air outlet port received in the shell chamber and communicated with the air duct;
the air outlet port is configured to output air from the fan to the air duct.