# US 9,520,582 B2 · Battery holder and mobile illumination device using same

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 9,520,582 B2
- Document ID: US9520582B2
- Status: Granted
- Kind: B2
- Application number: 14/354,077
- Filed: 2012-11-30
- Published: 2014-09-25
- Granted: 2016-12-13
- Earliest claimed: 2012-07-04
- Assignees: Panasonic Intellectual Property Management Co., Ltd.
- Applicants: Panasonic Corporation
- Inventors: Katsumasa Kawabata; Miho Shirakawa
- Web page: https://patentgrep.com/patent/US9520582B2

## CPC

- H01M 50/216: adapted for button or coin cells
- F21L 4/00: Electric lighting devices with self-contained electric batteries or cells
- F21V 23/00: Arrangement of electric circuit elements in or on lighting devices {(characterised by cooling arrangements F21V29/508)}
- A44C 15/0015: {Illuminated or sound-producing jewellery}
- Y02E 60/10: Energy storage using batteries
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- F21L: LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- A44C: PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

A compartment accommodates a button cell. The compartment includes an opening side through which the button cell is loaded or ejected from a side surface of the buttons cell. The compartment includes an upper side, a lower side, and lateral sides for holding flat surfaces and the side surface of the button cell. The compartment includes elastic pieces for biasing at least one of the flat surfaces or the side surface of the button cell. A slit is disposed on at least one of the upper side, the lower side, or the lateral sides. The slit extends from a side opposite to the opening side toward the opening side. The slit extends to a part of the button cell.

## Claims

### Claim 1

A cell holder with a compartment for accommodating a button cell, wherein:
the compartment is a casing including four lateral sides, an upper side, and a lower side,
the four lateral sides includes:
a first lateral side having an opening side through which the button cell is loaded or ejected from a side surface of the button cell,
a second lateral side opposite to the first lateral side, and
third and fourth lateral sides perpendicular to the first and second lateral sides,
the compartment includes an elastic piece for biasing at least one of flat surfaces or the side surface of the button cell,
a slit is disposed on at least one of the upper side and the lower side,
the slit extends from the second lateral side toward the first lateral side, and extends to a part of the button cell,
the slit includes an end positioned closer to the first lateral side, and has a long narrow rectangular shape in plan view, and the slit has a width of less than 5.6 mm, and
the end of the slit is positioned closer to the second lateral side than the biasing portion where the elastic piece biases the button cell.

### Claim 2 (depends on 1)

The cell holder of claim 1, wherein
the compartment includes two elastic pieces for biasing the flat surface and the side surface of the button cell,
a portion where one of the elastic pieces biases the button cell is positioned closer to the opening side than the end of the slit is, and
a portion where the other elastic piece biases the button cell is positioned closer to a side opposite to the opening side than the end of the slit is.

### Claim 3 (depends on 1)

The cell holder of claim 1, wherein the elastic piece serves as an electrode terminal connecting with a positive electrode or a negative electrode of the button cell.

### Claim 4 (depends on 1)

The cell holder of claim 1, wherein the compartment accommodates two or more of the button cells that are stacked.

### Claim 5 (depends on 1)

A portable illumination device, comprising:
the cell holder of claim 1;
an illumination part integrated with the cell holder; and
a neck strap, wherein
the illumination part is coupled with the compartment of the cell holder,
the button cell supplies power to the illumination part, and
the compartment is detachably mounted in a holding part disposed on an end of the neck strap.

### Claim 6 (depends on 1)

The cell holder of claim 1, wherein the slit does not extend to any of the first lateral side, the third lateral side or the fourth lateral side.

### Claim 7 (depends on 1)

The cell holder of claim 1, wherein the four lateral sides define a perimeter of the casing, and the button cell does not extend beyond the perimeter of the casing when the button cell is disposed in the compartment.