Cooling device of electronic apparatus and liquid crystal projector equipped with same including ducts communicating with respective openings

1. A cooling device of an electronic apparatus that includes a plurality of members juxtaposed such that their surfaces confront each other, the surface of at least one of the members comprising a heat discharge surface from which heat is discharged, said cooling device comprising:

a first air-cooling part equipped with a first opening provided confronting a first side surface of a unit that includes said plurality of members, said first side surface intersecting with a plane that contains said heat discharge surface, wherein a first air flow emitted from said first opening flows in a first direction toward a reference point set on said heat discharge surface;

a second air-cooling part equipped with a second opening provided confronting a second side surface of said unit, said second side surface being adjacent to said first side surface and intersecting with a plane that contains said heat discharge surface, wherein a second air flow emitted from said second opening flows toward said reference point in a second direction that intersects with said first direction;

a first duct that communicates with said first opening; and

a second duct that communicates with said second opening,

wherein, taking as a boundary a second line that passes through said reference point and that crosses at right angles with a first line that joins said reference point and a center of an opening width of said first opening in a sectional plane parallel to said heat discharge surface, a center in an opening width of said second opening in a sectional plane parallel to said heat discharge surface is located on a side opposite the side in which said first opening is provided,

wherein said second duct is configured to extend along said second side surface, an end of said second duct including a wall part provided with a surface that is perpendicular to a direction of an advance of an air flow that flows through the second duct, and

wherein said second opening is provided to adjoin said wall part of the end of said second duct.

2. The cooling device of an electronic apparatus according to claim 1 , further comprising:

a third air-cooling part equipped with a third opening provided confronting a third side surface of said unit, said third side surface confronting said second side surface and intersecting the plane that contains said heat discharge surface,

wherein a third air flow emitted from said third opening flows toward said reference point in a third direction that intersects said first direction, and

wherein, taking said second line as a boundary, a center in an opening width of said third opening in a sectional plane parallel to said heat discharge surface is located on the side opposite the side in which said first opening is provided.

3. The cooling device of an electronic apparatus according to claim 2 , wherein, taking said first line as a reference, said second and third openings are arranged at positions that are in line symmetry.

4. The cooling device of an electronic apparatus according to claim 1 , further comprising:

at least one partition that divides said second opening into a plurality of openings,

wherein said partition is provided at a position of a surface in which said second opening is formed, said position confronting an end of at least one member of said plurality of members.

5. The cooling device of an electronic apparatus according to claim 1 , further comprising a common cooling fan that supplies air to said first and second air-cooling parts.

6. The cooling device of an electronic apparatus according to claim 1 ,

wherein said first and second ducts communicate with a common intake port.

7. The cooling device of an electronic apparatus according to claim 1 , wherein the opening width of said first opening in a sectional plane parallel to said heat discharge surface is narrower than a width of said first side surface in a sectional plane parallel to said heat discharge surface.

8. The cooling device of an electronic apparatus according to claim 1 , wherein the opening width of said second opening in a sectional plane parallel to said heat discharge surface is narrower than a width of said second side surface in a sectional plane parallel to said heat discharge surface.

9. The cooling device of an electronic apparatus according to claim 2 , further comprising:

at least one partition that divides said third opening into a plurality of openings,

wherein said partition is provided in a position of a surface in which said third opening is formed, said position confronting an end of at least one member of said plurality of members.

10. The cooling device of an electronic apparatus according to claim 2 , further comprising a common cooling fan that supplies air to at least two air-cooling parts among said first to third air-cooling parts.

11. The cooling device of an electronic apparatus according to claim 2 , further comprising:

a third duct that communicates with said third opening,

wherein at least two ducts among said first to third ducts communicate with a common intake port.

12. The cooling device of an electronic apparatus according to claim 2 , wherein the opening width of said third opening in a sectional plane parallel to said heat discharge surface is narrower than a width of said third side surface in the sectional plane parallel to said heat discharge surface.

13. The cooling device of an electronic apparatus according to claim 1 , wherein said plurality of members comprises a liquid crystal panel and first and second optical elements arranged on each of an incident surface side and an emission surface side of said liquid crystal panel, and

wherein said first and second openings are provided directed toward adjacent ends of said liquid crystal panel.

14. The cooling device of an electronic apparatus according to claim 13 , wherein:

said liquid crystal panel includes a first end in which a flexible cable to which a drive signal is supplied is provided;

said first opening is provided confronting a second end that is opposite said first end of said liquid crystal panel; and

said second opening is provided confronting a third end that is adjacent to said first end of said liquid crystal panel.

15. The cooling device of an electronic apparatus according to claim 13 , wherein at least one of said first and second optical elements comprises one of or a combination of a sheet polarizer, a phase shift plate, and an optical compensation plate.

16. A liquid crystal projector, comprising:

a liquid crystal panel;

a first optical element arranged on an incident surface side of said liquid crystal panel;

a second optical element arranged on an emission surface side of said liquid crystal panel;

a first air-cooling part equipped with a first opening provided confronting a lower part of said liquid crystal panel wherein a first air flow emitted from said first opening flows in a first direction toward a reference point set on the incident surface or the emission surface of said liquid crystal panel;

a second air-cooling part equipped with a second opening provided confronting a side surface that is adjacent to said lower part of said liquid crystal panel wherein a second air flow emitted from said second opening flows toward said reference point in a second direction that intersects said first direction;

a first duct that communicate with said first opening; and

a second duct that communicates with said second opening,

wherein, taking as a boundary a second line that passes through said reference point and that crosses at right angles with a first line that joins said reference point and a center in an opening width of said first opening in a sectional plane that is parallel to the incident surface or the emission surface of said liquid crystal panel, a center of an opening width of said second opening in a sectional plane parallel to the incident surface or the emission surface of said liquid crystal panel is located on a side opposite the side in which said first opening is provided,

wherein said second duct is configured to extend along said side surface, an end of said second duct including a wall part provided with a surface that is perpendicular to a direction of an advance of an air flow that flows through the second duct, and

wherein said second opening provided to adjoin said wall part of the end of said second duct.

17. The liquid crystal projector according to claim 16 , further comprising:

a third air-cooling part equipped with a third opening provided confronting another side surface opposite said side surface of said liquid crystal panel wherein a third air flow emitted from said third opening flows toward said reference point in a third direction that intersects said first direction;

wherein, taking said second line as a boundary, a center of an opening width of said third opening in a sectional plane parallel to the incident surface or emission surface of said liquid crystal panel is located on a side opposite the side in which said first opening is provided.

18. The liquid crystal projector according to claim 16 , wherein, taking said first line as a reference, said second and third openings are arranged at positions in line symmetry.

19. The liquid crystal projector according to claim 16 , wherein at least one of said first and second optical elements comprises one or a combination of a sheet polarizer, a phase shift plate, and an optical compensation plate.

20. The cooling device of an electronic apparatus according to claim 1 , wherein an opening plane of said second opening is orthogonal to the surface of said wall part.

21. The cooling device of an electronic apparatus according to claim 1 , wherein a speed of flow of said first air flow is equal to that of said second air flow and a flow rate of said first air flow is equal to that of said second air flow.

22. The liquid crystal projector according to claim 16 , wherein an opening plane of said second opening is orthogonal to the surface of said wall part.

23. The liquid crystal projector according to claim 16 , wherein a speed of flow of said first air flow is equal to that of said second air flow and a flow rate of said first air flow is equal to that of said second air flow.

24. A cooling method for an electronic apparatus that includes a plurality of members juxtaposed such that their surfaces confront each other, the surface of at least one of the members comprising a heat discharge surface from which heat is discharged, said method comprising:

generating a first air flow which flows, in a first direction, toward a reference point set on said heat discharge surface from a first side surface of a unit that includes said plurality of members;

generating a second air flow which flows, in a second direction that intersects said first direction, toward said reference point from a second side surface of said unit that is adjacent to said first side surface and that intersects a plane that contains said heat discharge surface;

generating a collision jet by causing said first and second air flows to collide over both said reference point and a region close to said reference point; and

causing said collision jet to move.

25. The cooling method according to claim 24 , wherein said collision jet is moved in a direction in which there are no obstructions.

26. The cooling method according to claim 24 , wherein a speed of flow of said first air flow is equal to that of said second air flow and a flow rate of said first air flow is equal to that of said second air flow.

27. A cooling method for a liquid crystal projector that includes a liquid crystal panel, a first optical element arranged on an incident surface side of said liquid crystal panel, and a second optical element arranged on an emission surface side of said liquid crystal panel, wherein at least one among said liquid crystal panel, said first optical element, and said second optical element is cooled, said method comprising:

generating a first air flow which flows toward a reference point set on the incident surface or the emission surface of said liquid crystal panel from a first side surface of said liquid crystal panel;

generating a second air flow which flows toward said reference point from a second side surface of said liquid crystal panel that is adjacent to said first side surface;

generating a collision jet by causing said first and second air flows to collide over both said reference point and a region close to said reference point; and

causing said collision jet to move over the incident surface or the emission surface of said liquid crystal panel.

28. The cooling method according to claim 27 , wherein said reference point comprises a center point of said liquid crystal panel.

29. The cooling method according to claim 27 . wherein a speed of flow of said first air flow is equal to that of said second air flow and a flow rate of said first air flow is equal to that of said second air flow.