Cooling device, cooling structure, image projection device, and electronic device

A cooling structure comprising:

• a radiator that includes a plurality of heat radiation fins, wherein the radiator is configured to dissipate heat from a first object to be cooled by contacting the first object to be cooled;
• and
• an air blowing part for blowing cooling air to the radiator, wherein the air blowing part includes an exhaust port,
• wherein the heat radiation fins of the radiator include at least a first heat dissipation area and a second heat dissipation area,
• wherein a first surface area of a first set of the heat radiation fins that are disposed in the first heat dissipation area is greater than a second surface area of a second set of the heat radiation fins that are disposed in the second heat dissipation area,
• wherein the exhaust port of the air blowing part includes a first exhaust area for exhausting first cooling air, and a second exhaust area for exhausting second cooling air, wherein an amount of the second cooling air that is exhausted from the second exhaust area is greater than an amount of the first cooling air that is exhausted from the first exhaust area,
• wherein the first heat dissipation area including the first set of the heat radiation fins is disposed in the first exhaust area, and the second heat dissipation area including the second set of the heat radiation fins is disposed in the second exhaust area, and
• wherein a second object to be cooled that is different from the first object to be cooled is disposed at a downstream side of the second heat dissipation area, and the second cooling air that passes through the second exhaust area is sent to the second object to be cooled.

An image projection device comprising:

• a cooling structure;
• an image display element for displaying an image;
• and
• a projection optical unit for projecting the image that is displayed on the image display element,
• wherein the cooling structure includes
• a radiator that includes a plurality of heat radiation fins, wherein the radiator is configured to dissipate heat from the image display element by contacting the image display element;
• and
• an air blowing part for blowing cooling air to the radiator, wherein the air blowing part includes an exhaust port,
• wherein the heat radiation fins of the radiator include at least a first heat dissipation area and a second heat dissipation area,
• wherein a first surface area of a first set of the heat radiation fins that are disposed in the first heat dissipation area is greater than a second surface area of a second set of the heat radiation fins that are disposed in the second heat dissipation area,
• wherein the exhaust port of the air blowing part includes a first exhaust area for exhausting first cooling air, and a second exhaust area for exhausting second cooling air, wherein an amount of the second cooling air that is exhausted from the second exhaust area is greater than an amount of the first cooling air that is exhausted from the first exhaust area,
• wherein the first heat dissipation area including the first set of the heat radiation fins is disposed in the first exhaust area, and the second heat dissipation area including the second set of the heat radiation fins is disposed in the second exhaust area, and
• wherein the projection optical unit is disposed at a downstream side of the second heat dissipation area, and the second cooling air that passes through the second exhaust area is sent to the projection optical unit.

An electronic device comprising;

• an object to be cooled;
• and
• a cooling device for cooling the object to be cooled,
• wherein the cooling device includes
• an air blowing part that includes an exhaust port;
• and
• a radiator that includes a plurality of heat radiation fins,
• wherein the heat radiation fins of the radiator include at least a first heat dissipation area and a second heat dissipation area,
• wherein a first surface area of a first set of the heat radiation fins that are disposed in the first heat dissipation area is greater than a second surface area of a second set of the heat radiation fins that are disposed in the second heat dissipation area,
• wherein the exhaust port of the air blowing part includes a first exhaust area for exhausting first cooling air, and a second exhaust area for exhausting second cooling air, wherein an amount of the second cooling air that is exhausted from the second exhaust area is greater than an amount of the first cooling air that is exhausted from the first exhaust area, and
• wherein the first heat dissipation area including the first set of the heat radiation fins is disposed in the first exhaust area, and the second heat dissipation area including the second set of the heat radiation fins is disposed in the second exhaust area.