Electronic device

1. An electronic device comprising:

a body that houses an electronic component in a casing; and

at least one belt connected to the body; wherein the belt comprising:

a battery housing that houses a battery; and

a first opening in communication with the battery housing, and

the casing comprising:

a second opening in communication with the first opening; and

a release valve that discharges gas in the casing to the outside of the casing when gas released from the battery housed in the battery housing flows through the first and second openings into the casing to increase the pressure in the casing to an atmospheric pressure of a certain level or higher.

2. The electronic device according to claim 1 , wherein

the casing further comprises an electronic component housing that houses the electronic component,

the first opening is disposed on an opposing surface of the belt which faces the casing,

the second opening is disposed at a position facing the first opening on an opposing surface of the casing which faces the belt, the second opening being in communication with the first opening and the electronic component housing, and

the release valve discharges gas in the electronic component housing to the outside of the casing when an atmospheric pressure of the electronic component housing reaches a certain level or higher.

3. The electronic device according to claim 1 , wherein a communicating portion between the first opening and the second opening is sealed such that gas released from the battery to the battery housing flows through the first and second openings into the electronic component housing.

4. The electronic device according to claim 1 , wherein

the release valve includes a gas outlet that discharges gas in the casing to the outside of the casing, and the gas outlet is disposed on the opposing surface of the casing which faces the belt, and

the belt includes a groove disposed on the opposing surface of the belt which faces the casing, and the groove extends from a position opposite to the gas outlet to an edge of the opposing surface of the belt.

5. The electronic device according to claim 1 , wherein

the release valve includes the gas outlet which discharges gas in the casing to the outside of the casing and which is disposed on the opposing surface of the casing which faces the belt, and

the casing includes a groove which is disposed on the opposing surface of the casing which faces the belt and which extends from an edge of the gas outlet to an edge of the opposing surface of the casing.

6. The electronic device according to claim 1 , wherein the battery is electrically connected through the first and second openings to the electronic component in the casing.

7. The electronic device according to claim 1 , wherein the release valve comprises:

a gas outlet that discharges gas in the electronic component housing to the outside of the casing;

a lid that comes into contact with the gas outlet from the outside of the casing to cover the gas outlet; and

a biasing member that press the lid toward the inside of the casing.

8. The electronic device according to claim 1 , wherein

two belts are provided, and

only the single release valve is provided.

9. A body of an electronic device which houses an electronic component in a casing and which is connected to a belt comprising a battery housing that houses a battery and a first opening in communication with the battery housing, the body comprising:

a second opening in communication with the first opening; and

a release valve that discharges gas in the casing to the outside of the casing when gas released from the battery housed in the battery housing of the belt flows through the first opening of the belt and the second opening into the casing to increase the pressure in the casing to an atmospheric pressure of a certain level or higher.

10. A belt connected to a body of an electronic device that houses an electronic component in a casing, the belt comprising:

a battery housing that houses a battery; and

a first opening in communication with the battery housing,

wherein the gas in the casing is discharged to the outside of the casing through a release valve provided in the casing of the body of the electronic device when gas released from the battery housed in the battery housing flows through the first opening and a second opening of the body into the casing to increase the pressure in the casing to an atmospheric pressure of a certain level or higher.