Cooling apparatus, light source apparatus, and projector
A first cooling apparatus includes a first heat sink having multiple first fins having a U-shaped opening and an O-shaped opening which are provide therein, a first heat receiving member configured to be brought into abutment with a heat source, and a first heat pipe which extends from one end which is connected with the heat receiving member towards the other end, and the first heat pipe has a first extending portion which extends from the one end, a bent portion which is bent from the first extending portion and at least a part of which is disposed inside the U-shaped opening, and a second extending portion which extends from the bent portion and at least a part of which is disposed inside the O-shaped opening.
1 . A cooling apparatus comprising:
a heat sink comprising multiple fins, wherein:
a first fin of the multiple fins comprises a plate-shaped portion having a plate-like shape in which an O-shaped through-hole having a first opening diameter is provided at the plate-shaped portion;
a second fin of the multiple fins comprises a plate-shaped portion having a plate-like shape in which an O-shaped through-hole having a second opening diameter larger than the first opening diameter is provided at the plate-shaped portion of the second fin; and
a third fin of the multiple fins comprises a plate-shaped portion having a plate-like shape in which a U-shaped opening is provided at the plate-shaped portion;
a heat receiving member configured to be brought into abutment with a heat source; and
a heat pipe which extends from one end which is connected with the heat receiving member towards another end,
wherein the heat pipe comprises a first extending portion which extends from the one end, a bent portion which is bent from the first extending portion and at least a part of which is disposed inside the U-shaped opening of the third fin, and a second extending portion which extends from the bent portion and at least a part of which is disposed inside the O-shaped through-hole of the first fin, at least a part of the bent portion is disposed inside the O-shaped through-hole having the second opening diameter of the second fin.
2 . The cooling apparatus according to claim 1 ,
wherein the bent portion which is disposed inside the U-shaped opening is in abutment with opening edges of the U-shaped opening at least at a part thereof.
3 . The cooling apparatus according to claim 1 ,
wherein the heat pipe comprises the first extending portion which extends from the one end along a first direction, the bent portion which is bent from the first extending portion along a second direction which intersects the first direction, and the second extending portion which extends from the bent portion along the second direction.
4 . The cooling apparatus according to claim 3 ,
wherein the bent portion has a flat shape which results from being compressed in a direction perpendicular to the first direction and the second direction.
5 . The cooling apparatus according to claim 3 ,
wherein the second extending portion has a flat shape which results from being compressed in a direction perpendicular to the first direction and the second direction.
6 . The cooling apparatus according to claim 3 ,
wherein the second direction is perpendicular to the first direction.
7 . The cooling apparatus according to claim 1 ,
wherein the U-shaped opening is opened in one direction at a location where at least a part of the bent portion is disposed.
8 . The cooling apparatus according to claim 1 ,
wherein the U-shaped opening constitutes through-holes at a location where at least a part of the bent portion is disposed.
9 . The cooling apparatus according to claim 1 ,
wherein the heat pipe is brought into abutment with the heat sink over substantially a whole area of an outer circumferential surface of a location thereof where the heat pipe is disposed inside the O-shaped through-hole of the first fin.
10 . The cooling apparatus according to claim 1 ,
wherein the first fin of the multiple fins further comprises:
an upper projecting portion which is bent from an upper edge portion of the plate-shaped portion through about 90 degrees towards one surface side of the plate-shaped portion so as to project therefrom; and
a lower projecting portion which is bent from a lower edge portion of the plate-shaped portion through about 90 degrees towards the one surface side of the plate-shaped portion so as to project therefrom.
11 . The cooling apparatus according to claim 1 ,
wherein the third fin of the multiple fins further comprises:
the U-shaped opening being provided at a substantially central portion in one direction;
an upper projecting portion which is bent from an upper edge portion of the plate-shaped portion through about 90 degrees towards one surface side of the plate-shaped portion so as to project therefrom; and
a lower projecting portion which is bent from a lower edge portion of the plate-shaped portion through about 90 degrees towards the one surface side of the plate-shaped portion so as to project therefrom.
12 . The cooling apparatus according to claim 11 ,
wherein a U-shaped opening projecting portion is provided at an opening edge of the U-shaped opening, the U-shaped opening projecting portion being bent through about 90 degrees towards the one surface side of the plate-shaped portion so as to project therefrom.
13 . The cooling apparatus according to claim 10 ,
wherein the first fin has the O-shaped through-hole provided at a substantially central portion in one direction of the plate-shaped portion of the first fin.
14 . The cooling apparatus according to claim 13 ,
wherein an opening projecting portion is provided along the O-shaped through-hole of the first fin, the opening projecting portion being bent through about 90 degrees towards the one surface side of the plate-shaped portion of the first fin so as to project therefrom.
15 . The cooling apparatus according to claim 13 ,
wherein a part of the bent portion is disposed inside a plurality of O-shaped through-holes and opening diameters of the O-shaped through-holes change in accordance with degrees of bending of the part of the bent portion which is disposed inside the O-shaped through-holes.
16 . The cooling apparatus according to claim 12 ,
wherein projecting lengths of the upper projecting portion, the lower projecting portion, and the U-shaped opening projecting portion are substantially identical.
17 . The cooling apparatus according to claim 14 ,
wherein projecting lengths of the upper projecting portion, the lower projecting portion, and the opening projecting portion are substantially identical.
18 . A light source apparatus, comprising:
the cooling apparatus according to claim 1 ; and
a light source configured to emit light having a wavelength in a red wavelength range, light having a wavelength in a blue wavelength range, and light having a wavelength in a green wavelength range.
19 . A projector, comprising:
the light source apparatus according to claim 18 ;
a display device configured to receive light source light from the light source apparatus and form image light;
a projection optical system configured to project the image light emitted from the display device onto a projection target object; and
a control section configured to control the display device and the light source apparatus.
20 . The cooling apparatus according to claim 1 ,
wherein the first opening diameter and the second opening diameter vary in size in the left-right direction depending on the degree of bending of the bent portion.