JP3616862B2 - Radiator - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a radiator, and more particularly to a radiator for radiating heat generated from a heating element such as a semiconductor element such as a transistor or a thyristor.
[0002]
In this specification, the term “aluminum” includes aluminum alloys in addition to pure aluminum.
[0003]
[Prior art]
Conventionally, as this type of radiator, a plate-like part whose one surface serves as a heating element mounting part and a second part of the plate-like part are raised with respect to the plate-like part and are parallel to each other at intervals. And made of an extruded aluminum material having a cross-sectional comb shape and a plurality of fin portions formed integrally with each other.
[0004]
[Problems to be solved by the invention]
However, in the conventional radiator, the ratio of the height of the fin portion to the pitch between the fin portions cannot be set to 5 or more due to restrictions due to extrusion molding. The pitch must be increased, and conversely, if the pitch is decreased, the height of the fin portion must be reduced. In either case, a sufficiently large heat dissipation area cannot be secured, and the heat dissipation efficiency is improved. There was a problem of being bad. Moreover, in order to secure a sufficiently large heat radiation area, there has been a problem that the entire radiator is increased in size.
[0005]
An object of the present invention is to provide a radiator capable of solving the above-described problems, ensuring a sufficiently large heat radiation area, and preventing an increase in size.
[0006]
[Means for Solving the Problems]
The radiator according to the first aspect of the present invention has a plate-like portion whose one surface serves as a heating element mounting portion, and a rising shape with respect to the plate-like portion on the other surface of the plate-like portion and in parallel with an interval from each other. A cross-sectional comb-shaped first component member made of an aluminum extruded shape formed of a plurality of fin portions integrally formed so as to be, a plate-shaped portion, and a plate-shaped portion on one surface, rising from the plate-shaped portion And a second cross-section comb-shaped second member made of an aluminum extruded shape formed of a plurality of fin portions integrally formed so as to be parallel to each other with a space between each other. The grooves on which the fin portions of the second component member are fitted to the plate-like portion of the first component member are combined so that the surfaces on which the fin portions are formed face each other and the fin portions are alternately arranged. Formed, both sides of the groove and the tip of the fin portion of the second component member A plurality of ridges extending in the extruding direction are formed on either one of both side surfaces of the portion, and a ridge extending in the extruding direction and fitting with the ridges is formed on the other side of the second component member. The tip end portion of the fin portion of the second constituent member is fixed to the plate-like portion of the first constituent member by forcibly inserting the tip end portion of the fin portion into the groove.
[0007]
According to a second aspect of the present invention, there is provided a radiator according to the first aspect of the present invention, wherein the cross section is provided on either one of the both side surfaces of the groove of the first component member and the both end surfaces of the fin portion of the second component member. A plurality of ridges extending in the extrusion direction of an obtuse isosceles triangle are formed in a sawtooth shape, and on the other side, the same number of ridges extending in the extrusion direction and having the same cross-sectional shape as the ridges are formed. It is what.
[0008]
According to a third aspect of the present invention, there is provided a radiator according to the first aspect of the present invention, wherein the cross section is provided on either one of the both side surfaces of the groove of the first component member and the both end surfaces of the fin portion of the second component member. A plurality of ridges extending in the extrusion direction of a right triangle having a hypotenuse inclined upward in the left-right direction are formed in a sawtooth shape, and on the other side, each has the same cross-sectional shape as the ridges extending in the extrusion direction. The number of concave stripes is the same as that of convex stripes.
[0009]
Radiator according the invention of claim 4, in any one invention of one of claims 1 to 3, the width of the left and right fin tip of the second component is in the groove of the first component without the ridge The width is slightly smaller than the left and right widths and larger than the distance between the tips of the left and right ridges of the groove.
[0010]
Radiator according the invention of claim 5, in any of the invention of claims 1 to 3, the width of the left and right groove of the first component is slightly greater than the width of the left and right of the fin portion which does not include a ridge And a distance smaller than the distance between the tips of the left and right ridges of the fin portion.
[0011]
Radiator according the invention of claim 6, in any of the invention of claims 1 to 5, the extrusion direction of the length of the plate-shaped portion in both components, the width and wall thickness in the lateral direction, of the fin portions The wall thickness and height are equal to the pitch between adjacent fin portions.
[0012]
Radiator according the invention of claim 7, in any of the invention of claims 1 to 6, the groove of the first component member, the central portion in the lateral direction between the fin portions adjacent the upper surface of the plate-like portion, And it is formed in the right side part of the fin part of a right end so that it may each extend in an extrusion direction, and the pitch between adjacent grooves is equal to the pitch between fin parts.
[0013]
Radiator according the invention of claim 8 is the invention according to any one of claims 1 to 7, the tip of the fin portion of the first component is brought into contact with the plate-like lower surface of the second component Or a space between the plate-like portion and the plate-like portion.
[0014]
Radiator according the invention of claim 9, the one in the invention described in either tip fits the groove of the fin portion of the first component to the plate-like portion of the second component of the preceding claims In addition to being formed, the tip of the fin portion of the first component member is fitted in the groove.
[0015]
A radiator according to a tenth aspect of the present invention is the radiator according to the ninth aspect , wherein the groove of the second component member is a central portion in the left-right direction between adjacent fin portions on the lower surface of the plate-like portion, and a left side of the leftmost fin portion. Each of the portions is formed to extend in the extrusion direction, and the pitch between adjacent grooves is equal to the pitch between the fin portions.
[0016]
A radiator according to an eleventh aspect of the present invention is the radiator according to the ninth or tenth aspect , wherein both side portions of the groove of the plate-like portion of the second constituent member are not caulked, and the width thereof is that of the fin portion of the first constituent member. it is one that is larger than the width.
[0017]
According to the radiator of the invention of claim 1 , the two cross-section comb-shaped members made of extruded aluminum are opposed to each other where the fin portions of the plate-like portions are formed and the fin portions are alternately arranged. Since the tip of the fin portion of the second component member is fixed to the first component member in a state of being fitted in the groove of the plate-shaped portion of the first component member, the first component member The heat generated from the heating element attached to the heating element attachment part is dissipated from the fin part of the first component member and the fin part and the plate-like part of the second component member. Therefore, even if the ratio of the height of the fin portion to the pitch of the fin portion in each constituent member is 5 or less, a sufficiently large heat radiation area can be secured. Moreover, since only the two component members are combined as described above, the overall size of the radiator can be prevented. In addition, the cost is lower than in the case of brazing the tip of the fin portion of the second component member to the first component member.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. In the following description, the upper and lower sides and the left and right sides of each drawing are referred to as the upper and lower sides and the left and right sides. Moreover, the same code | symbol is attached | subjected to the same thing and the same part through all drawings, and the overlapping description is abbreviate | omitted.
[0019]
Embodiment 1
This embodiment is shown in FIG. 1 and FIG .
[0020]
In FIG. 1 , the radiator includes a cross-sectional comb-shaped first component (1) made of an aluminum extruded profile and a cross-sectional comb-shaped second component (2) also made of an aluminum extruded profile. The first component member (1) has a plate-like portion (3) whose lower surface serves as a heating element mounting portion, and a rising shape on the upper surface of the plate-like portion (3) and in parallel with a space in the left-right direction. And a plurality of fin portions (4) integrally formed. The second component member (2) is a plate-like part (5) and a plurality of integrally formed on the lower surface of the plate-like part (5) so as to be suspended and parallel to each other in the left-right direction. The fin portion (6).
[0021]
The length in the extrusion direction, the width in the left-right direction, and the wall thickness of the plate-like parts (3) and (5) in both component members (1) and (2), and the wall thickness and height of the fin parts (4) and (6) The pitch between adjacent fin portions (4) and (6) is equal to each other. The central part in the left-right direction between adjacent fin parts (4) on the upper surface of the plate-like part (3) of the first component member (1) and the right-hand part of the rightmost fin part (4) are respectively in the extrusion direction. Growing grooves (7) are formed, and the pitch between adjacent grooves (7) is equal to the pitch between fin portions (4). Further, the center part in the left-right direction between adjacent fin parts (6) on the lower surface of the plate-like part (5) of the second component member (2) and the left side part of the leftmost fin part (6) are respectively extruded. Grooves (8) extending in the direction are formed, and the pitch between adjacent grooves (8) is equal to the pitch between fin portions (6).
[0022]
As shown in FIG. 2, on both sides of the groove (7) formed on the upper surface of the plate-like part (3) of the first component (1) of the radiator, the cross section is in the direction of extrusion of an obtuse isosceles triangle. A plurality of extending ridges (15) are formed in a sawtooth shape. In addition, on both side surfaces of the tip of the fin portion (6) of the second component member (2) , a concave strip (16) extending in the extrusion direction and having the same cross-sectional shape as the convex strip (15) is formed on the convex strip ( Same number as 15) . Fin (6) the width of the left and right tip is slightly smaller than the width of the left and right grooves (7) containing no projections (15), and the left and right grooves (7) ridge between the tips (15) Has been made larger than the distance. Therefore, when the second component member (2) is pressed downward from above using a press or the like, the tip of the fin portion (6) can be forcibly inserted into the groove (7) . . Then, the distal end portion of the fin portion of the second component (2) (6) is forced fitted into the first component (1) of the grooves (7) in a fin portion projections (15) of the groove (7) The tip of the fin portion (6) of the second component member (2) is in contact with the plate-like portion (3) of the first component member (1) in a state in which the recess (16 ) of (6) is engaged with the plate. It is fixed .
[0023]
Both component members (1) and (2) are combined so that the fin portions (4) and (6) are alternately arranged, and the tip portion of the fin portion (4) of the first component member (1) is the second component. The tip of the fin portion (6) of the second component member (2) is fitted in the groove (8) of the plate portion (5) of the member (2), and the plate portion (3 of the first component member (1)). ) Is forcibly inserted into the groove (7), and the tip of the fin portion (6) of the second component (2) is fixed to the plate-like portion (3). It should be noted that both side portions of the groove (8) of the plate-like portion (5) of the second component member (2) are not caulked, and the width thereof is larger than the width of the fin portion (4) of the first component member (1). Is also slightly larger. The end of the fin portion (4) of the first component member (1) is fitted into the groove (8) of the second component member (2) in order to position both the component members (1) and (2). It has been broken.
[0024]
Incidentally, Oite to the first embodiment described above, ridge (15) is formed on both sides of the front end portion of the fin portion of the second component (2) (6), concave on both sides of the groove (7) (16) may be formed. In this case, the left and right width of the groove (7) is slightly larger than the left and right width of the fin portion (6) not including the ridge (15), and the left and right ridge (15) of the fin portion (6). It is made smaller than the distance between the tips.
[0025]
FIG. 3 shows a modification of the ridges and ridges in the first embodiment .
[0026]
In FIG. 3 , the right side of each side surface of the groove (7) formed on the upper surface of the plate-like portion (3) of the first component member (1) has an oblique side inclined upward in the horizontal direction toward the outer side in the left-right direction. A plurality of ridges (20) extending in a triangular extrusion direction are formed in a sawtooth shape. In addition, on both side surfaces of the tip of the fin portion (6) of the second component member (2), a concave strip (21) extending in the extrusion direction and having the same cross-sectional shape as the convex strip (20) is formed on the convex strip ( The number is the same as 20). The left and right width of the tip of the fin (6) is slightly smaller than the left and right width of the groove (7) not including the ridge (20), and between the ends of the left and right ridges (20) of the groove (7). Has been made larger than the distance. Therefore, when the second component member (2) is pressed downward from above using a press or the like, the tip of the fin portion (6) can be forcibly inserted into the groove (7). . And the front-end | tip part of the fin part (6) of a 2nd structural member (2) is forcibly inserted in the groove | channel (7) of a 1st structural member (1), and the protruding item | line (20) and fin part of a groove | channel (7) The tip of the fin portion (6) of the second component member (2) is in contact with the plate-like portion (3) of the first component member (1) in a state in which the recess (21) of (6) is tightly engaged. It is fixed.
[0027]
In the modification of the first embodiment described above, the ridges (20) are formed on both sides of the tip of the fin portion (6) of the second component (2), and the grooves (7) are recessed on both sides. Article (21) may be formed. In this case, the left and right width of the groove (7) is slightly larger than the left and right width of the fin portion (6) not including the protrusion (20), and the right and left protrusions (20) of the fin portion (6). It is made smaller than the distance between the tips.
[0028]
In the first embodiment , the groove (8) is formed on the lower surface of the plate-like portion (5) of the second component member (2), and the tip of the fin portion (4) of the first component member (1) is the groove. (8) Although fitted in, the groove on the lower surface of the plate-like portion (5) of the second component member (2) is not necessarily required. In this case, the fin portion (4) of the first component member (1) is made lower than in the case of the first embodiment, and its tip is brought into contact with the lower surface of the plate-like portion (5) of the second component member (2). Or a gap is formed between the plate-like portion (5).
[0029]
【The invention's effect】
According to the radiator of claim 1, the heat generated from the heating element attached to the heating element mounting portion of the first component member is the fin portion of the first component member, the fin portion of the second component member, and the plate shape. Therefore, even if the ratio of the height of the fin portion of each component member to the pitch of the fin portion is 5 or less, a sufficiently large heat radiation area can be ensured. Therefore, the heat dissipation efficiency is improved as compared with the conventional one. Moreover, since only the two components are combined as described above, the overall size of the radiator can be prevented. In addition, the cost is lower than when the tips of the fins of the second component member are brazed to the first component member.
[Brief description of the drawings]
FIG. 1 is a front view showing an entire heat radiator according to a first embodiment of the present invention.
FIG. 2 is a partially enlarged exploded front view showing the radiator of the first embodiment.
FIG. 3 is a view corresponding to FIG. 2 and showing a modification of the ridges and grooves of the first embodiment .
[Explanation of symbols]
(1): First component
(2): Second component
(3): Plate-shaped part
(4): Fin part
(5): Plate-shaped part
(6): Fin part
(7) : Groove
(15) (20): Projection
(16) (21): Concave

Claims (11)

A plurality of plate-like portions, one surface of which is used as a heating element mounting portion, and a plurality of integrally formed on the other surface of the plate-like portion so as to be raised with respect to the plate-like portion and in parallel with each other at intervals. A cross-sectional comb-shaped first component member made of an extruded aluminum member made of fins, a plate-shaped portion, and a plate-shaped portion on one surface, rising from the plate-shaped portion and parallel to each other at intervals It is composed of a plurality of fin portions formed integrally with each other so as to form a cross-sectionally comb-shaped second component member made of an extruded aluminum material. Oppositely, the fin portions are combined so as to be alternately arranged, and a groove in which the tip portion of the fin portion of the second component member is fitted is formed in the plate-like portion of the first component member. Either one of both side surfaces of the tip of the fin portion of the component member A plurality of ridges extending in the extrusion direction are formed, and a recess extending in the extrusion direction and fitting with the ridges is formed on the other, and the tip of the fin portion of the second component member is forced into the groove. The heat radiator by which the front-end | tip part of the fin part of the 2nd component member is being fixed to the plate-shaped part of the 1st component member by being inserted . A plurality of ridges extending in the extruding direction of an obtuse isosceles triangle on each side surface of both sides of the groove of the first component member and both end surfaces of the fin portion of the second component member are serrated. The radiator according to claim 1, wherein the same number of recesses extending in the extrusion direction and having the same cross-sectional shape as the protrusions are formed on the other side . A right-angled triangle having a hypotenuse in which the transverse section is inclined upward in the left-right direction on either one of the both side surfaces of the groove of the first component member and the both end surfaces of the tip portion of the fin portion of the second component member The plurality of ridges extending in the extrusion direction are formed in a sawtooth shape, and on the other side, the same number of ridges extending in the extrusion direction and having the same cross-sectional shape as the ridges are formed in the same number. Radiator . The left and right widths of the fin portion tips of the second component member are slightly smaller than the left and right widths of the grooves of the first component member not including the ridges, and larger than the distance between the left and right ridge tips of the grooves. The heat radiator according to any one of claims 1 to 3 . The left and right widths of the grooves of the first component member are slightly larger than the left and right widths of the fin portions not including the ridges, and smaller than the distance between the tips of the left and right ridges of the fin portions. The heat radiator in any one of 1-3 . The length in the extruding direction of the plate-like part, the width and thickness in the left-right direction, the thickness and height of the fin part, and the pitch between adjacent fin parts are equal to each other in both constituent members. The heat radiator according to any one of 5 . Grooves of the first component member are formed so as to extend in the extrusion direction at the center portion in the left-right direction between adjacent fin portions on the upper surface of the plate-like portion and the right side portion of the fin portion at the right end, and are adjacent to each other. The radiator according to any one of claims 1 to 6, wherein a pitch between the grooves is equal to a pitch between the fin portions . The front end of the fin portion of the first component member is brought into contact with the lower surface of the plate-like portion of the second component member, or a gap is formed between the tip portion and the plate-like portion. The heat radiator in any one of . A groove is formed in the plate-like portion of the second component member into which the tip of the fin portion of the first component member is fitted, and the tip of the fin portion of the first component member is fitted in the groove. The heat radiator in any one of 1-7 . Grooves of the second component member are formed to extend in the extrusion direction at the center portion in the left-right direction between adjacent fin portions on the lower surface of the plate-like portion and the left side portion of the fin portion at the left end, and are adjacent to each other. The heat radiator according to claim 9, wherein a pitch between the grooves is equal to a pitch between the fin portions . The heat radiator according to claim 9 or 10, wherein both side portions of the groove of the plate-like portion of the second constituent member are not caulked, and the width thereof is larger than the width of the fin portion of the first constituent member .

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