JP2009099740A - Cooling device for housing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cooling device for a housing that can efficiently dissipate heat while made inexpensive and lightweight by decreasing the resistance of air flow passing between heat dissipation fins. <P>SOLUTION: The cooling device for the housing includes a fan which is provided at one end of the housing and discharges air sucked from an air intake provided at the other end of the housing to the outside of the housing, and a heat dissipation fin portion which is thermally connected to at least two heat generating elements disposed in the housing and arranged substantially in parallel to flows of air flowing toward the fins in at least two different directions. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention cools the heat generating element by causing the air sucked from the air suction port to flow with low resistance between the heat radiation fins connected to the heat generating element installed in the housing by the fan provided in the housing. The present invention relates to a casing cooling device.

  There is a need for a heat sink that efficiently dissipates heat generated by a CPU, elements, etc. at low cost and light weight. Conventionally, heat sinks made of extruded aluminum material, which are inexpensive to manufacture, have been used. Since the base plate and the heat radiating fin are integrally formed, the heat sink made of the extruded material is easy to manufacture and has been used for heat radiation of the heat generating element in the housing. That is, the heat generating element in the housing is connected to the base plate of the heat sink, the heat of the heat generating element is transferred to the heat sink, and the heat moved to the heat sink is discharged out of the housing by the cold outside air sucked from the suction port by the fan. As a result, the casing is cooled.

Furthermore, a cooling device is used in which a heat pipe having an excellent heat radiation function and a heat sink having heat radiation fins are combined. Japanese Patent Application Laid-Open No. 2001-57492 discloses a cooling device in which a heat sink provided with heat radiation fins and a heat pipe are combined.
JP 2005-114341 A

  In the cooling device disclosed in Japanese Patent Application Laid-Open No. 2001-57492, a heat sink composed of a base plate and a heat radiating fin is disposed in the vicinity of the air intake port or the air discharge port of the housing, and the heat generating element and the heat sink at a remote position are arranged. It is thermally connected with a heat pipe. When a heat sink is placed near the air inlet, the heat of the heating element in the center of the housing is moved to the heat sink by the heat pipe, and the cold air drawn from the air inlet by the fan attached to the housing The outside air is cooled by passing directly between the heat sink fins of the heat sink. The air that has cooled the radiation fins passes through the inside of the casing and is discharged out of the casing through the air discharge port.

  When a heat sink is placed near the air outlet, the heat of the heating element in the center of the case is moved to the heat sink by the heat pipe, and the cold air drawn from the air inlet by the fan attached to the case The outside air passes through the inside of the housing, and the air heated by the air passes between the radiation fins and is discharged outside the housing.

  In any case, the air is forcibly passed between the heat radiation fins by the fan, and the heat of the heating element in the housing is discharged out of the housing. Therefore, the resistance of the air passing between the radiating fins is large, and it is necessary to install a large fan, which increases the noise and increases the cost.

  Accordingly, an object of the present invention is to provide a casing cooling device capable of efficiently radiating heat while reducing the resistance of air passing between the radiating fins and realizing reduction in cost and weight. is there.

  The inventor has conducted extensive research to solve the above-described conventional problems. As a result, it is thermally connected to each of the at least two heating elements disposed in the housing and is generally parallel to the air flow in at least two different directions that flow toward the fan attached to the housing. It has been found that by disposing a heat dissipating fin portion having a plurality of fins arranged in parallel, the resistance of the air flow passing between the fins can be reduced, and the heat dissipating efficiency is improved.

Furthermore, a heat sink fin portion having a plurality of fin rows formed by cutting a predetermined shape into a single plate material and raising the cut portion, or stacking such heat sink fin portions is used. As a result, the fin area is increased, and the air moves up and down through the openings provided in the fins.
The present invention has been made based on the research results described above.

According to a first aspect of the casing cooling apparatus of the present invention, air that is provided at one end of the casing and sucked from an air suction port provided at the other end of the casing is removed from the casing. A fan to discharge,
A plurality of parallel arrangements that are thermally connected to each of at least two heating elements arranged in the housing and are generally parallel to the air flow in at least two different directions that flow toward the fan. It is the cooling device of the housing | casing provided with the radiation fin part provided with this fin.

  According to a second aspect of the case cooling device of the present invention, the heat radiating fin portion includes a first heat radiating fin portion having a plurality of fins arranged linearly in parallel with the side wall of the case, and the case. A cooling device for a housing comprising a second radiating fin portion having a plurality of fins arranged substantially linearly or along a diagonal line.

  According to a third aspect of the casing cooling device of the present invention, the heat dissipating fin portion is disposed with a predetermined gap between the surface contacting the heat generating element disposed on the substrate and the substrate. The cooling device for a housing is characterized in that the main force of the air flowing toward the air flows between the heat radiating fins, and a part thereof flows through the gap.

  According to a fourth aspect of the casing cooling device of the present invention, the heat dissipating fin portion is formed from a plurality of fin rows formed by cutting a predetermined shape into a single plate member and raising the cut portion. And a connecting portion that is a part of the plate member that connects the fins to each other.

  According to a fifth aspect of the case cooling device of the present invention, another plate is provided in a space formed between a plurality of fins formed by cutting a single plate material and raising the cut portion. A cooling device for a housing, wherein heat radiating fins formed from a single plate material are stacked and stacked so as to be arranged.

  According to a sixth aspect of the casing cooling device of the present invention, there are provided two heat radiating fin portions having the same fin length, each having the fin portion and the connecting portion formed by cutting a single plate member. Is a cooling device for a housing, wherein the fin portions are arranged to face each other so that the fin portions are in close contact with each other.

  According to a seventh aspect of the cooling device for a housing of the present invention, the fin portion of the one plate member and the fin portion of the another plate member have different lengths, A cooling device for a housing, wherein a long fin portion of a plate material is inserted into the space of the another plate material, and the short fin of the another plate material is in close contact with the long fin to support the one plate material It is.

  According to an eighth aspect of the casing cooling apparatus of the present invention, a part of the fan and the first radiating fin portion and / or the second radiating fin portion are thermally connected by a heat pipe. It is the cooling device of the housing | casing characterized by the above-mentioned.

  According to a ninth aspect of the case cooling apparatus of the present invention, the first heat radiation fin portion and the second heat radiation fin portion are integrally formed. It is.

  According to a tenth aspect of the casing cooling device of the present invention, the length of the long fin portion is adjusted so that the heat generating element is disposed between the long fin portions of the one plate member. This is a casing cooling device characterized by the above.

  According to the casing cooling device of the present invention, by arranging the fins arranged in parallel to each other along the direction of the plurality of airs sucked from the air intake port of the casing and flowing toward the fan in the casing. Since the resistance of the air flowing between the radiating fins can be reduced, the air flow between the radiating fins can be increased and the thermal efficiency can be increased. Since air smoothly flows between the heat radiating fins from the air inlet toward the fan, a large force for rotating the fan is not required, so that noise can be reduced.

  Furthermore, as the heat radiation fin, a heat radiation fin formed by cutting and raising from a single plate material is used in combination, so that the area of the heat radiation fin is increased and the wind is directed vertically through the opening provided in the heat radiation fin. Since it also moves, heat dissipation efficiency can be improved.

A housing cooling apparatus according to the present invention will be described with reference to the drawings.
One aspect of the casing cooling device of the present invention is provided at one end of the casing, and discharges air sucked from an air inlet provided at the other end of the casing to the outside of the casing. With fans to
A plurality of parallel arrangements that are thermally connected to each of at least two heating elements arranged in the housing and are generally parallel to the air flow in at least two different directions that flow toward the fan. It is the cooling device of the housing | casing provided with the radiation fin part provided with this fin.

  The above-described heat dissipating fin portion connects a fin with at least one fin portion formed of a plurality of rows of fins formed by cutting a predetermined shape into a single plate material and raising the cut portion. And a connecting portion that is a part of the plate material

  FIG. 1 is a cross-sectional view for explaining one embodiment of a casing cooling device of the present invention. As shown in FIG. 1, a cooling device 1 for a housing according to the present invention is provided at one end of a housing 2, and is provided with an air inlet 6-1 provided at the other end of the housing 2, 6-2 and 6-3 are thermally connected to the fan 3 for discharging the air sucked out of the housing 2 to the outside and the two heating elements (not shown) disposed in the housing 2 (not shown). The two heat dissipating fin portions 4 and 5 are arranged in parallel so as to be substantially parallel to the air flows in different directions flowing toward the fan 3.

  The heat radiating fin portion 4 is sucked from the air suction port 6-2, and a plurality of heat radiating fins 4-1 are arranged in parallel with the air flowing toward the fan 3 along the side wall of the housing. The heat radiating fin portion 5 is mainly sucked from the air suction port 6-1, and a plurality of heat radiating fins 5-1 are arranged in parallel with the air flowing toward the fan 3 substantially along the diagonal line of the housing. That is, a plurality of fans are arranged in parallel corresponding to the flow of air from the different directions toward the fans.

  Therefore, the air sucked into the housing from the air suction port 6-1 flows between the plurality of heat radiation fins 4-1 along the side wall of the housing with a small resistance, and enters the housing from the air suction port 6-2. The sucked air flows between the plurality of radiating fins 5-1 along the diagonal line of the casing with a small resistance, and is all discharged from the fan 3 to the outside of the casing. A part of the air sucked from the air suction port 6-3 flows between the radiation fins 5-1, and the main force is directed directly to the fan 3.

In this way, by arranging a plurality of radiating fin portions so that air flows between the radiating fins with a small resistance, the air flows smoothly and in a large amount from the air inlet to the fan. The heat dissipation efficiency of the body can be increased.
Further, the above-described heat dissipating fin portion is arranged such that the surface that contacts the heat generating element disposed on the substrate is disposed with a predetermined gap between the heat dissipating element and the main force of the air flowing toward the fan is between the heat dissipating fins. Flow, partly through the gap.

  FIG. 2 is a diagram for explaining the correlation position between the fan and the radiation fin and the air flow. A substrate 8 is disposed on the bottom surface of the housing 2, and the heating element 7 is mounted on the substrate 8. The radiating fin portion 4 is arranged so that the bottom surface of the radiating fin is in contact with the upper surface of the heating element arranged in this way. The radiating fin part 4 and the fan 3 are arranged so that the main part of the air flow passes between the radiating fins 4-1 and is discharged from the fan 3 to the outside of the housing. The gap between the substrate and the bottom surface of the radiating fin is arranged so that a part of the air flow flows.

In another aspect, the heat dissipating fin portion includes at least one fin portion formed of a plurality of fins formed by cutting a predetermined shape into a single plate member and raising the cut portion; And a connecting portion that is a part of a plate member that connects the fins.
FIG. 3 is a perspective view for explaining a radiating fin portion formed by making a cut in a single plate material and raising the cut portion.

  The heat dissipating fin part connects a plurality of fins formed by making a cut in a predetermined shape, for example, a bowl shape or a U shape, into a single plate material, and vertically raising the cut portion. And a connecting part which is a part of the plate material. That is, the portions other than the fins that are cut and raised vertically are the connecting portions of the same plate material.

  More specifically, as shown in FIG. 3, the heat dissipating fin portion 4 is a row of a plurality of fins 21 formed by cutting two adjacent sides of the bowl shape and raising the cut portions. A first fin portion 12 comprising: a second fin portion 13 comprising a row of a plurality of fins 31 formed by incising three adjacent sides of the U-shape and raising the cut portions; A connecting portion 14 for connecting the fin portion 2 and the second fin portion 3 is provided.

  In the radiating fin portion shown in FIG. 3, the first fin portion 12 including a plurality of rows of fins 21 is disposed on both outer portions, and the plurality of fins 31 are disposed between the two first fin portions 12. The 2nd fin part 13 is arrange | positioned and the connection part 14 of a strip | belt-shaped part is arrange | positioned between the 1st fin part 12 and the 2nd fin part 13, respectively. Each fin of the 1st fin part 12 and each fin of the 2nd fin part are arrange | positioned in the position mutually displaced along the longitudinal direction of the strip | belt-shaped part. For example, the first fin portion 2 is arranged so that the extended line of the long axis of the fin 21 of the first fin portion 2 is approximately at the center of the opening 34 between the two fins 31 of the second fin portion 3. These are arranged so that the extended line of the major axis of the fin 31 of the second fin portion 3 comes to the approximate center of the opening 24 between the two fins 21, 21.

  In the embodiment shown in FIG. 3, on the outermost side, a first fin portion formed by cutting two adjacent sides of the bowl shape and raising the cut portion is disposed, and between the first fin portions, Incisions are made in the three sides of the adjacent U-shape, and the second fin portions of one row formed by raising the notched portions are arranged, but the first fin portions are arranged on the outermost side, Multiple rows of second fin portions may be arranged between the first fin portions.

  FIG. 4 is a diagram for explaining a state in which a sheet is cut. With reference to FIG. 4, the process of producing a radiation fin part from one board | plate material is demonstrated.

  As shown in FIG. 4, the heat radiating component is formed of a single plate material. For example, two types of cuts are made in the thin plate 10 having excellent thermal conductivity such as copper and aluminum. That is, the outer side portion of the plate material is cut into two adjacent sides a and b of the bowl shape. In the inner part of the plate material, incisions are made in the adjoining U-shaped three sides c, d, e.

  The first fin portion cut into the adjacent two sides a and b of the saddle shape raises a portion cut along f indicated by a dotted line, and the adjacent U-shaped three sides c, d, and e The second fin portion into which the cut is made raises the portion cut along h indicated by a dotted line. In addition to the notches shown in FIG. 4, although not shown in the drawing, incisions are made on the two outer sides of the first hook portion on the outermost side between the two first fin portions. A plurality of cuts may be formed in parallel on three sides of the adjacent U-shape for the fin portion.

  FIG. 5 is a diagram for explaining one aspect of a heat radiation fin portion formed by stacking a plurality of the above-described cut-and-raised type heat radiation fins. As shown in FIG. 5, the U-shaped cut was made from one plate material, and the cut portion was raised to form the heat radiation fin 4-1. The cut-and-raised part is the fin 21-1, and after the cut is the opening 34-1. The remaining part other than the fins is a connecting part 14-1. Similarly, a U-shaped piece was cut from another sheet of plate material, and the cut portion was raised to form the radiation fin 4-2.

The cut-and-raised part is the fin 21-2, and after the cut is the opening 34-2. The remaining part other than the fins is a connecting part 14-2. The fin 21-1 is inserted into the opening 34-2, and the two fins 4-1 and 4-2 are overlapped to form the radiating fin portion 4. Thus, by combining a plurality of heat dissipating fins, the number of fins can be increased and the fin pitch can be reduced. The size of the cut portion is appropriately determined in consideration of the opening and the size of the fin inserted into the opening. In the radiating fin portion shown in FIG. 5, the portion that is thermally connected to the heating element is arranged facing upward.
The heat dissipating fin portion is formed by superimposing substantially the same size fins in the same direction.

  FIG. 6 is a diagram for explaining another aspect of the heat radiating fin portion formed by stacking a plurality of the above-described cut-and-raised type heat radiating fins. As shown in FIG. 6, a single fin was cut into a U-shape, and the cut portion was raised to form the heat radiation fin 4-1. The cut-and-raised part is the fin 21-1, and after the cut is the opening 34-1. The remaining part other than the fins is a connecting part 14-1.

  Similarly, a U-shaped piece was cut from another sheet of plate material, and the cut portion was raised to form the radiation fin 4-2. The cut-and-raised part is the fin 21-2, and after the cut is the opening 34-2. The remaining part other than the fins is a connecting part 14-2. Two radiation fins 4-1 and 4-2 are opposed to each other, and the fins 21-1 and the fins 21-2 are arranged so as to overlap with each other, so that the radiation fin portions 4 are formed. At this time, the fin 21-1 of the heat radiation fin 4-1 is supported by the connecting portion 14-2 of another heat radiation fin 4-2.

The heat dissipating fins 4-1 and 4-2 may be arranged to face each other so as to provide a gap between the fins without overlapping the fins. As a result, the strength of the radiation fin can be increased. Further, the air can also move in the vertical direction of the radiating fin by the opening.
As described above, the heat dissipating fin portion is formed by opposingly arranging fins having substantially the same size.

  FIG. 7A is a diagram for explaining another aspect of the heat radiating fin portion formed by stacking a plurality of the above-described cut-and-raised type heat radiating fins. In this embodiment, the length and width of the cut and raised fins are different. That is, as shown in FIG. 7, a U-shaped cut was made from a single plate material, and the cut portion was raised to form the heat radiation fin 4-1. The cut-and-raised part is the fin 21-1, and after the cut is the opening 34-1. The remaining part other than the fins is a connecting part 14-1.

Similarly, a U-shaped piece was cut from another sheet of plate material, and the cut portion was raised to form the radiation fin 4-2.
The cut-and-raised part is the fin 21-2, and after the cut is the opening 34-2. The remaining part other than the fins is a connecting part 14-2.
The length of the fin 21-1 of the radiation fin 4-1 is longer than the length of the fin 21-2, and the width of the fin 21-2 is larger than that of the fin 21-1.

  The two radiating fins 4-1 and 4-2 formed in this way are arranged in the same direction, and the fin 21-1 of the radiating fin 4-1 is inserted into the opening 14-2 of the radiating fin 4-2. The fin 21-1 further extends below the heat radiating fin 4-2. At this time, the fin 21-2 of the radiation fin 4-2 is in contact with the fin 21-1 of the radiation fin 4-1, and supports the radiation fin 4-1.

As a result, the strength of the heat dissipating fins can be increased in the same manner as described with reference to FIG. Further, the air can also move in the vertical direction of the radiating fin by the opening.
As described above, the radiating fin portion is formed by arranging fins having different lengths in the same direction.

FIG.7 (b) is a side view which shows a state when the radiation fin part of the aspect shown to Fig.7 (a) is thermally connected to the heat generating element mounted on the board | substrate. As shown in FIG. 7 (b), the length of the fin in the portion of the radiating fin shown in FIG. 7 (a) that comes into contact with the heating element is shortened so that the heating element can be accommodated. The main force of the air sucked from the air suction port of the housing passes between the fins located in the space surrounded by the coupling portions 14-1 and 14-2 of the heat radiating fin portion, and a part of the side surface of the heating element, and , Passing through the gap between the substrate and the connecting portion 14-2. At the same time, air can move up and down through the opening.
As described above, since the heat sink fin portion having a large area can be formed by cutting and processing a thin plate, a heat sink fin portion that is lightweight and excellent in heat dissipation efficiency can be obtained.

  3 to 7, various aspects of the cut-and-raised type heat dissipating fin in which the fin is disposed along the side wall of the housing have been described. However, the heat radiation in which the fin is disposed substantially along the diagonal line of the housing. Similarly, the fin portion 5 can be formed by radiating fins formed by cutting and raising, and further superposing them. Furthermore, not only a linear fin but a curved fin may be used for the radiation fin portion. A first radiating fin portion (having a plurality of fins arranged in a straight line substantially parallel to the side wall of the housing), and a second radiating fin portion (linearly extending substantially along the diagonal line of the housing) Or a plurality of fins arranged in a curved shape) has been described separately, but the first radiating fin portion and the second radiating fin portion are integrally formed. It may be. For example, the first fin and the second fin are formed by cutting and raising one sheet of material, and the plurality of sheets are overlapped to form the heat radiation fin portion.

Furthermore, in the casing cooling device according to another aspect of the present invention, a part of the fan and the first radiating fin portion and / or the second radiating fin portion are thermally connected by a heat pipe. . FIG. 8A is a cross-sectional view for explaining a cooling device for a housing provided with a heat pipe.
As shown in FIG. 8A, the casing cooling device 1 of the present invention is provided at one end of the casing 2, and the air inlet 6 provided at the other end of the casing 2. −1, 6-2, 6-3, the fan 3 for discharging the air sucked out of the housing 2 and the two heating elements (not shown) disposed in the housing 2 are thermally Two radiating fin portions 4 and 5 connected in parallel so as to be substantially parallel to the flow of air in different directions flowing toward the fan 3 are provided. One end of a flat heat pipe is attached to the upper surface of the fan 3 so as to be thermally connected to the discharge port side of the air intake port of the fan. The flat heat pipe extends toward the radiating fin portion 5, and the other end is attached, for example, thermally connected to a part along the longitudinal direction of the radiating fin portion.

  In this embodiment, the radiating fin portion 4 is sucked from the air suction port 6-2, and a plurality of radiating fins 4-1 are arranged in parallel with the air flowing toward the fan 3 along the side wall of the housing. . The heat radiating fin portion 5 is mainly sucked from the air suction port 6-1, and a plurality of heat radiating fins 5-1 are arranged in parallel with the air flowing toward the fan 3 substantially along the diagonal line of the housing. That is, a plurality of fans are arranged in parallel corresponding to the flow of air from the different directions toward the fans.

Therefore, the air sucked into the housing from the air suction port 6-1 flows between the plurality of heat radiation fins 4-1 along the side wall of the housing with a small resistance, and enters the housing from the air suction port 6-2. The sucked air flows between the plurality of radiating fins 5-1 along the diagonal line of the casing with a small resistance, and is all discharged from the fan 3 to the outside of the casing. A part of the air sucked from the air suction port 6-3 flows between the radiation fins 5-1, and the main force is directed directly to the fan 3.
Simultaneously with the air flow described above, heat is directly transferred to the fan outlet side by the heat pipe partially connected to the radiating fin portion, and is discharged out of the housing by the fan.

  FIG. 8B is a diagram illustrating the correlation position of the fan, the heat pipe, and the heat radiation fin, and the air flow. The substrate 8 is disposed on the bottom surface of the housing 2, the heating element 7 is mounted on the substrate 8, and the radiation fin portion 5 so that the bottom surface of the radiation fin is in contact with the top surface of the heating element thus disposed. Is placed. The radiating fin portion 5 and the fan 3 are arranged so that the main part of the air flow passes between the radiating fins and is discharged from the fan 3 to the outside of the casing. The gap between the substrate and the bottom surface of the radiating fin is arranged so that a part of the air flow flows. At the same time, as described above, heat is directly transferred to the fan outlet side by the heat pipe partially connected to the radiating fin portion, and is discharged outside the housing by the fan.

FIG. 9A is a cross-sectional view for explaining a cooling device for a housing provided with an integrated heat dissipating fin portion having a heat pipe. FIG. 9B is a view for explaining the integrated heat radiation fin portion.
As shown in FIG. 9A, an integrated heat radiating fin portion 17 is provided in the vicinity of the fan 3. That is, the integrated radiating fin portion 17 includes a plurality of radiating fins 4-1 arranged in parallel with the air flowing toward the fan 3 along the side wall of the casing, and the fan 3 along a substantially diagonal line of the casing. A plurality of heat dissipating fins 5-1 arranged in parallel with the air flowing toward is formed on the same plate material, and a plurality of similar plate materials are overlapped. For example, a flat heat pipe is sandwiched between two plates. By arranging the heat pipes in this way, heat equalization is achieved between the fins of the two plate members, so that the heat dissipation efficiency is improved.

  That is, as shown in FIG. 9 (b), two plate members 17-1 and 17-2 each having heat radiation fins 4-1 and 5-1 formed by cutting and raising are overlapped to form an integrated heat radiation fin portion. Form. A flat heat pipe 15 is sandwiched between the two plate members 17-1 and 17-2 and thermally connected to each other. For example, when the temperature on the side of the heat radiation fin 4-1 is higher than that of the heat radiation fin 5-1, depending on the position of the heat generating element or the amount of heat, heat of both plate materials is made uniform by the heat pipe. The number and arrangement of the heat pipes are appropriately determined according to the position of the heating element and the amount of heat.

  By using the integrated heat dissipating fin portion shown in FIG. 9, the air sucked into the housing from the air suction port 6-1 is made into a plurality of heat dissipating fins 4 along the side wall of the housing, as in the other embodiments. -1 flows with a small resistance, and the air sucked into the housing from the air suction port 6-2 flows with a small resistance between the plurality of heat radiation fins 5-1 along the diagonal line of the housing. Is also discharged from the fan 3 to the outside of the housing. At this time, heat equalization is performed between the radiation fins 4-1 and 5-1. A part of the air sucked from the air suction port 6-3 flows between the radiation fins 5-1, and the main force is directed directly to the fan 3.

  The radiating fins can use radiating fins of various shapes in accordance with not only the shapes in the various aspects described above, but also the amount of heat generated by the heating elements and the state of arrangement. The combination of the heat pipe and the radiating fin portion can also be appropriately selected according to the type and shape of the radiating fin.

  According to the present invention, by arranging the fins arranged in parallel to each other along the direction of a plurality of air sucked from the air intake port of the housing and flowing toward the fan in the housing, the space between the heat radiation fins can be reduced. Since the resistance of the flowing air can be reduced, the air flow between the radiating fins can be increased to increase the thermal efficiency.

FIG. 1 is a cross-sectional view for explaining one embodiment of a casing cooling device of the present invention. FIG. 2 is a diagram for explaining the correlation position between the fan and the radiation fin and the air flow. FIG. 3 is a perspective view for explaining a radiating fin portion formed by making a cut in a single plate material and raising the cut portion. FIG. 4 is a diagram for explaining a state in which a sheet is cut. FIG. 5 is a diagram for explaining one aspect of a heat radiation fin portion formed by stacking a plurality of the above-described cut-and-raised type heat radiation fins. FIG. 6 is a diagram for explaining another aspect of the heat radiating fin portion formed by stacking a plurality of the above-described cut-and-raised type heat radiating fins. FIG. 7A is a diagram for explaining another aspect of the heat radiating fin portion formed by stacking a plurality of the above-described cut-and-raised type heat radiating fins. FIG.7 (b) is a side view which shows a state when the radiation fin part of the aspect shown to Fig.7 (a) is thermally connected to the heat generating element mounted on the board | substrate. FIG. 8A is a cross-sectional view for explaining a cooling device for a housing provided with a heat pipe. FIG. 8B is a diagram illustrating the correlation position of the fan, the heat pipe, and the heat radiation fin, and the air flow. FIG. 9A is a cross-sectional view for explaining a cooling device for a housing provided with an integrated heat dissipating fin portion having a heat pipe. FIG. 9B is a view for explaining the integrated heat radiation fin portion.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cooling device 2 Housing | casing 3 Fan 4 Radiation fin part 5 Radiation fin part 6 Air inlet 7 Heating element 8 Substrate 10 One board 12 First fin part 13 Second fin part 14 Connection part 15 Heat pipe 17 Integral radiating fins 21, 31 Fin 34 Opening

Claims (10)

A fan that is provided at one end of the housing and discharges air sucked from an air suction port provided at the other end of the housing to the outside of the housing;
A plurality of parallel arrangements that are thermally connected to each of at least two heating elements arranged in the housing and are generally parallel to the air flow in at least two different directions that flow toward the fan. The cooling device of the housing | casing provided with the radiation fin part provided with the fin.   The heat radiating fin portion is arranged in a straight line or a curved line substantially along a diagonal line of the first heat radiating fin portion having a plurality of fins arranged linearly in parallel with the side wall of the housing. The cooling device for a casing according to claim 1, comprising a second radiating fin portion having a plurality of fins.   The heat radiating fin portion is arranged such that a surface that contacts a heat generating element disposed on the substrate is spaced from the substrate by a predetermined gap, and the main force of the air flowing toward the fan flows between the radiating fins. The cooling device for a housing according to claim 1, wherein a part flows through the gap.   The heat radiating fin portion connects the fin with at least one fin portion formed of a plurality of rows of fins formed by cutting a predetermined shape into a single plate member and raising the cut portion. The housing cooling device according to any one of claims 1 to 3, further comprising a connecting portion that is a part of the plate member.   A heat sink fin formed from another single plate material is arranged in a space formed between a plurality of fins formed by cutting a single plate material and raising the cut portions. The casing cooling apparatus according to claim 4, wherein the casing cooling apparatus is superposed on the casing.   Two radiating fin portions having the fin portions and the connecting portions, which are formed by cutting a single plate material and having substantially the same fin length, are opposed to each other so that the fin portions are in close contact with each other. The casing cooling device according to claim 4, wherein the casing cooling device is formed as described above.   The fin portion of the one plate material and the fin portion of the another plate material have different lengths, and the long fin portion of the one plate material is inserted into the space of the another plate material. The casing cooling device according to claim 6, wherein the short fins of the other plate material are in close contact with the long fins to support the single plate material.   The part of the fan and the first radiating fin portion and / or the second radiating fin portion are thermally connected by a heat pipe. The cooling device of the housing | casing of Claim 1.   9. The casing cooling device according to claim 2, wherein the first radiating fin portion and the second radiating fin portion are integrally formed. 10. The cooling of the casing according to claim 7, wherein the length of the long fin portion is adjusted so that the heating element is disposed between the long fin portions of the one plate member. apparatus.

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