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US 2004/0165352 A1Published application
Housing structure of electronic device and heat radiation method therefor
AssigneeNEC Corporation
InventorTakashi Oyamada
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AssigneeNEC Corporation
InventorTakashi Oyamada
Estimating the term…
A sealed housing of the present invention is used in an electronic device such as a communication device, and is provided with a body, a cover, and a movable fin for radiating heat while suppressing a change in internal pressure, and preventing invasion of water vapor or poisonous gas from the exterior to thereby avoid an accident caused by dew condensation, corrosion of an electrical circuit component, or the like. The movable fin is configured to be automatically slidable toward the inside or outside of the sealed housing depending on a change in internal atmospheric pressure of the sealed housing following a change in internal temperature thereof. When the temperature inside the sealed housing rises due to heat from the electrical circuit component mounted in a package inside the sealed housing, it is possible to increase a heat radiation area of the movable fin while keeping sealing tightness so that a heat radiation effect can be enhanced.
An electronic device comprising:
An electronic device comprising:
An electronic device comprising:
A heat radiation method for an electronic device having a sealed housing, wherein, when an internal temperature of said sealed housing having therein an electrical circuit component rises, a movable fin is caused to protrude to the outside of said sealed housing.
A heat radiation method for an electronic device having a sealed housing, wherein, when an internal temperature of said sealed housing having therein an electrical circuit component rises, a bellows container connected between a first hole in an upper part of said sealed housing and a second hole in a lower part thereof increases its internal volume.
A heat radiation method for an electronic device having a sealed housing, wherein, when an internal temperature of said sealed housing having therein an electrical circuit component rises, an expandable/contractible balloon connected between a first hole in an upper part of said sealed housing and a second hole in a lower part thereof increases its internal volume.
A sealed housing of an electronic device, comprising:
A sealed housing of an electronic device, comprising:
A sealed housing of an electronic device, comprising:
Dependencies are inferred from the claim text.