Electronic device
An electronic device in an embodiment includes a housing including a hollow first space section with one surface of the hollow first space section opened and including a first ventilation hole, a lid provided to close the opening of the housing, including a hollow second space section, and including a second ventilation hole, a heat sink provided in the first space section and configured to radiate heat generated from an electronic component housed in the housing, and a fan provided in the first space section and configured to cool the heat sink with a flow of air caused by the fan rotating. The lid includes a ventilation port in a position facing the fan and separates the first space section and the second space section excluding the ventilation port.
1. An electronic device, comprising:
a housing including a hollow first space with one surface of the hollow first space opened and including a first ventilation hole that causes an outside of the electronic device and the hollow first space to communicate;
a lid provided to close the open one surface of the housing, including a hollow second space, and including a second ventilation hole that causes the outside of the electronic device and the hollow second space to communicate;
a heat sink provided in the hollow first space and configured to radiate heat generated from an electronic component housed in the housing; and
a fan provided in the hollow first space and configured to cool the heat sink with a flow of air caused by rotation of the fan,
wherein the lid further includes:
in a position facing the fan, a ventilation port that causes the hollow first space and the hollow second space to communicate and is configured to separate the hollow first space and the hollow second space excluding the ventilation port,
a top cover including the second ventilation hole and the ventilation port and configured to separate the hollow first space and the hollow second space, and
a cap cover provided above the top cover to form the second space between the cap cover and the top cover.
2. The electronic device according to claim 1 , wherein
the first ventilation hole is an exhaust hole, the second ventilation hole is an intake hole, and, if the fan rotates, air sucked from the second ventilation hole is sent to the heat sink through the ventilation port and discharged to the outside of the electronic device from the first ventilation hole.
3. The electronic device according to claim 1 , wherein
the fan includes substantially square corners on the top cover side, and
cushion rubbers that are pressed against substantially the entire corners are provided around the ventilation port.
4. The electronic device according to claim 3 , wherein the cushion rubbers include inclined surfaces, and the inclined surfaces are pressed against the corners from an oblique direction.
5. The electronic device according to claim 1 , wherein the housing has a substantially rectangular parallelepiped shape.
6. The electronic device according to claim 1 , wherein the lid and the open one surface of the housing have substantially a same shape.
7. The electronic device according to claim 1 , wherein the second ventilation hole comprises a plurality of holes.
8. The electronic device according to claim 1 , wherein the electronic component is a central processing unit.
9. A method of cooling an electronic device, comprising:
radiating heat generated from an electronic component housed in a housing via a heat sink in a hollow first space, the housing including the hollow first space with one surface of the hollow first space opened and including a first ventilation hole that causes an outside of the electronic device and the hollow first space to communicate, the electronic device also comprising a lid provided to close the open one surface of the housing, including a hollow second space, and including a second ventilation hole that causes the outside of the electronic device and the hollow second space to communicate;
cooling the heat sink with a flow of air caused by rotation of a fan provided in the hollow first space; and
causing the hollow first space and the hollow second space to communicate via a ventilation port.
10. The method according to claim 9 , further comprising:
rotating the fan to cause air sucked from the second ventilation hole to be sent to the heat sink through the ventilation port and discharged to the outside of the electronic device from the first ventilation hole, wherein the first ventilation hole is an exhaust hole and the second ventilation hole is an intake hole.
11. An image processing device, comprising:
a component configured to generate an image based on information;
a housing including a hollow first space with one surface of the hollow first space opened and including a first ventilation hole that causes an outside of the image processing device and the hollow first space to communicate;
a lid provided to close the open one surface of the housing, including a hollow second space, and including a second ventilation hole that causes the outside of the image processing device and the hollow second space to communicate;
a heat sink provided in the hollow first space and configured to radiate heat generated from an electronic component housed in the housing; and
a fan provided in the hollow first space and configured to cool the heat sink with a flow of air caused by rotation of the fan, wherein
the lid further includes, in a position facing the fan, a ventilation port that causes the hollow first space and the hollow second space to communicate and is configured to separate the hollow first space and the hollow second space excluding the ventilation port.
12. The image processing device according to claim 11 , wherein the lid further includes:
a top cover including the second ventilation hole and the ventilation port and configured to separate the hollow first space and the hollow second space; and
a cap cover provided above the top cover to form the second space between the cap cover and the top cover.
13. The image processing device according to claim 12 , wherein
the fan includes substantially square corners on the top cover side, and
cushion rubbers that are pressed against substantially the entire corners are provided around the ventilation port.
14. The image processing device according to claim 13 , wherein the cushion rubbers include inclined surfaces, and the inclined surfaces are pressed against the corners from an oblique direction.
15. The image processing device according to claim 11 , wherein
the first ventilation hole is an exhaust hole, the second ventilation hole is an intake hole, and, if the fan rotates, air sucked from the second ventilation hole is sent to the heat sink through the ventilation port and discharged to the outside of the image processing device from the first ventilation hole.
16. The image processing device according to claim 11 , wherein the housing has a substantially rectangular parallelepiped shape.
17. The image processing device according to claim 11 , wherein the lid and the open one surface of the housing have substantially a same shape.
18. The image processing device according to claim 11 , wherein the second ventilation hole comprises a plurality of holes.
19. The image processing device according to claim 11 , wherein the electronic component is a central processing unit.