JP2009008367A - Collapsible heat radiation plate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a collapsible heat radiation plate easy in packing, carrying and laying, and capable of preventing buckling of a fluid pipe. <P>SOLUTION: This collapsible heat radiation plate has a plurality of plate-like bodies of carving a groove on one surface, and is formed by vertically-laterally arranging a plurality of bases having a plane shape of a substantially rectangular shape, and is formed by embedding the fluid pipe in the groove. The collapsible heat radiation plate is characterized in that a clearance having a plane shape of a substantially rectangular shape or a U shape is formed by at least one between the adjacent bases among the bases, and a small base of carving a groove on one surface is arranged in the clearance, and the small base is respectively connected to the base for forming the clearance via a bottom-folding part capable of bottom-folding, and the fluid pipe is communicated with the base for forming the clearance via the small base, and the mutual adjacent bases are not connected in a position included between an extension line of the bottom^folding part, and the mutual adjacent bases are connected in the other position in a collapsible form. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a folding heat sink that is preferably used in a floor heating system. More specifically, the present invention relates to a foldable heat sink that can be easily packed, transported, and laid and that can prevent buckling of a fluid pipe.

  Conventionally, various heating technologies have been proposed and put into practical use for the purpose of improving the comfort of living spaces in structures such as cold seasons in cold regions and houses in cold regions. Most of them are floor heating systems that are placed on the floor of the living space. As an example of the floor heating system, a foamed synthetic resin plate or a wooden plate is used as a base, and a heat medium pipe is embedded in a groove carved on one surface thereof, and these surfaces are made of aluminum. The thing provided with the heat sink of the structure coat | covered with flexible thin plates (soaking plate), such as foil, is mentioned. In this system, the floor surface is warmed by the heat medium flowing through the heat medium pipe disposed in the heat radiating plate of the floor heating system, and the room is heated by the radiant heat from the floor surface.

  The heat radiating plate is spread over a heating place such as a floor surface of a living room, and is usually large. Therefore, the means of carrying the heat sink in a folded state to the laying site and deploying at the laying site is adopted.

Several techniques have been disclosed so far for making the heat sink foldable without buckling the fluid piping. For example, in Patent Document 1, a plurality of narrow and long plate-like bodies engraved with an embedded groove for a fluid tube are combined into a square shape, and the fluid tube is embedded in the embedded groove. In a heatsink that can be folded with a plurality of contact parts where the heat dissipation sheet is attached to the whole and the backside material is attached to all or part of the backside, and the ends of adjacent plate-like bodies contact each other. The fluid tube outlet opening at one plate end and the fluid tube inlet opening at the other plate end are provided so as not to oppose each other, and this portion is used as a fluid tube crossover portion to expand and contract. Disclosed is a technique that enables a heat sink to be bent by disposing a crossover member having a property. Patent Document 2 discloses a technique that enables a heat sink to be bent in a form in which a crossover member having elasticity is not provided at a fluid tube transition portion shown in Patent Document 1. Furthermore, in Patent Document 3, a folding floor heating panel that can be folded by rotating a panel plate by 180 ° along the jointed line and connecting a plurality of panel plates in a diagonal direction on the surface of the panel plate. The hot water tube housing groove is formed on the panel plate, the housing groove is linearly continuous with the housing groove of the adjacent panel plate, and the hot water tube housing groove of the panel plate is adjacent to each panel plate. At the boundary with the panel plate, a tube reversal receiving main groove branched from the straight hot water tube receiving groove via the circular portion is formed, and in the adjacent panel plate, A technique is disclosed in which the floor heating panel can be folded by forming the tube reversal accommodation sub-groove in the opposite direction.
JP 2003-166719 A JP 2003-227620 A JP 2005-24206 A

  However, in the conventional techniques disclosed in Patent Documents 1 to 3, the heat sink is folded in a direction (hereinafter referred to as “valley fold”) in the horizontal direction (or vertical direction) in a direction in which the upper surface is brought closer to the upper surface. After that, it was not possible to further fold in the vertical direction (or horizontal direction). For this reason, when the heat sink is folded in the horizontal direction (or vertical direction), the folding direction (hereinafter referred to as “mountain folding”) is required to be folded in the vertical direction (or horizontal direction) in a direction in which the lower surface and the lower surface are brought closer to each other. was there. As a result, the conventional foldable heat sink as disclosed in Patent Documents 1 to 3 can be folded in a compact manner without buckling the fluid piping, but can be deployed alone at the laying site. There was a problem that it was difficult to do.

  Therefore, an object of the present invention is to provide a foldable heat sink that can be easily packed, transported, and laid, and that can prevent buckling of a fluid pipe.

  The present invention will be described below. In order to facilitate understanding of the present invention, reference numerals in the accompanying drawings are appended in parentheses, but the present invention is not limited to the illustrated embodiments.

  The present invention comprises a plurality of plate-like bodies (2) having grooves (1) engraved on one side, and a plurality of bases (3, 3,. It is a foldable heat radiating plate in which a fluid pipe (5) is embedded in a groove, and a gap between the adjacent bases (3a, 3d) of the base is approximately rectangular or U-shaped. A small base (7) formed with at least one and having grooves formed on one side is disposed in the gap, and the small base is a valley fold (6a) that can be folded into the base forming the gap. 6b), fluid pipes communicate with the bases forming gaps through the small bases, and adjacent bases are connected at positions included between the extended lines of the valley folds. The folds are characterized in that the bases adjacent at other positions are connected in a foldable form. Fold By providing heat-dissipating plate (10), to solve the above problems.

Here, “a plate-like body with grooves engraved on one side” is a plate-like member with grooves for embedding fluid piping on one side, and the shape and the engraving of the plate-like body. The shape of the groove provided varies depending on the place where the plate-like body is disposed. In addition, the “base having a substantially rectangular planar shape” is a member having at least a plurality of the above-mentioned plate-like bodies connected to each other to have a substantially rectangular planar shape. It may be connected with a plate-like body in a form in which small joists or small joists are arranged.
Specifically, “a gap having a substantially rectangular shape or a U-shape is formed between adjacent bases” means that, for example, two bases having concave portions at the end portions are combined with the concave portions. In this way, the planar shape is substantially rectangular or a U-shaped gap is formed, or the planar shape is substantially rectangular by adjoining one substrate having a recess at the end to another substrate. Or the formation of a U-shaped gap. In the foldable heat sink according to the present invention, at least one gap is provided.
“Small substrate with grooves on one side” means a plate-like member with grooves for embedding fluid piping on one side, which is smaller than the substrate, It is preferable that it is substantially the same as the size. In addition, “connected through a valley foldable portion” specifically refers to, for example, connecting the adjacent small base and the upper surface of the base by pasting a continuous metal soaking plate. In addition, by not connecting the lower surface, it can be realized by a means that enables valley folding while connecting the small base and the base. Furthermore, “fluid piping communicates with a base that forms a gap via a small base” means that the fluid pipe is embedded across the valley fold so that a gap is formed via the small base. This means that fluid can go back and forth between the bases.
“The bases adjacent to each other at positions included between the extended lines of the valley folds are not connected” means that the bases in contact with each other in the region included between the extended lines of the valley folds are laid. Means not connected. Specifically, “connected in a foldable form” means that, for example, in addition to the means exemplified as the valley fold part, the lower surface of the adjacent base is connected by sticking an adhesive tape. In addition, the upper surface is not connected, so that it can be realized by means that enables mountain folding while connecting adjacent bases.
In the present invention, a small base may be provided by separating a part of the base without providing a gap.

  In the said invention, it is preferable that the substantially linear notch is provided in the surface by which the groove | channel of the small base | substrate is not engraved.

  Here, the “substantially straight cutout” may be provided in a part of the small base, or may be continuously provided from one end side to the other end of the small base. . As the shape of the “notch”, for example, a shape in which recesses are continuously formed at regular intervals like a perforation, a shape in which peaks and valleys are continuously formed, a U-shaped cross section or a cross section Examples include a U-shape formed continuously.

  In the present invention described above, it is preferable that the valley fold portion is provided with means for preventing buckling of the piping for fluid.

  Here, the “buckling prevention means” is a means for preventing the fluid piping from buckling when the folding heat sink according to the present invention is folded. In the vicinity, by engraving a groove along the connecting part, when the folding heat sink is folded, the fluid pipe is exposed in the direction along the connecting part, and means that can suppress buckling, etc. it can.

  In the said invention, when the base | substrate arranged in the direction substantially parallel to a valley fold part is folded, it is good to set it as the form which a small base | substrate exposes.

  Here, “the form in which the small base is exposed when the base arranged in the direction substantially parallel to the valley fold is folded” means that only the base arranged in the direction substantially parallel to the valley fold is folded. In this case, it means a form in which the upper surface of the small base is visible.

  According to the foldable heat sink of the present invention, it is possible to fold in a state where it can be easily deployed at the laying site because it can be folded in the horizontal direction and then further in the vertical direction. . Further, when folding, the heat sink can be easily folded without buckling the fluid piping. That is, according to the present invention, it is possible to provide a foldable heat sink that can be easily packed, transported, and laid and that can prevent buckling of the fluid piping.

  Such an operation and gain of the present invention will be made clear from the best mode for carrying out the invention described below.

  The present invention will be described below based on the embodiments shown in the drawings. However, what is described below is an example of the embodiments of the present invention, and the present invention is not limited to the following descriptions unless it exceeds the gist. is not.

  FIG. 1 is a top view schematically showing a folding heat sink according to the present invention. In FIG. 1, some symbols are omitted in order to prevent the diagram from becoming complicated. In the following description, the horizontal direction in the drawings is referred to as a horizontal direction, and the vertical direction is referred to as a vertical direction.

  As shown in FIG. 1, the foldable heat sink 10 (hereinafter simply referred to as “heat sink 10”) according to the present invention includes a base 3a, a base 3b, a base 3c, a base 3d, a base 3e, and a base 3f. Is provided. The base 3a and the base 3b are connected via a connecting part 4a, the base 3b and the base 3c are connected via a connecting part 4b, the base 3d and the base 3e are connected via a connecting part 4c, and the base 3e , And the base 3f are connected via a connecting portion 4d. Furthermore, between the base 3a and the base 3d, a small base 7 is connected to the ends of the base 3a and the base 3d via a valley fold 6a and a valley fold 6b. The small base 7 is connected to the base 3a and the base 3d only by the valley fold 6a and the base fold 6b, and is not connected in a direction orthogonal to the base fold 6a and the base fold 6b. . The length obtained by subtracting the lateral length of the small base 7 from the lateral length of the base 3a (base 3d) is longer than the lateral length of the base 3b (base 3e). By doing so, when the heat sink 10 is folded at the connecting portions 4, 4,..., The small base 7 is exposed. On the other hand, the base 3a, the base 3d, the base 3b, the base 3e, and the base 3c, which are adjacent to each other via the boundary line 8 included between the extension lines of the valley fold 6a and the valley fold 6b, and The bases 3f are not connected to each other.

  Further, the heat radiating plate 10 is provided with a header 11. The header 11 has a forward pipe (not shown) for flowing a heat medium heated by a heat source device (not shown) to the header 11 and a heat medium radiated by the heat radiating plate 10 for returning the heat medium from the header 11 to the heat source device. A return pipe (not shown) is attached, and the groove 1 formed in the base 3a, base 3b, base 3c, base 3d, base 3e, base 3f, and small base 7 exits the header 11 to the header 11. A fluid pipe 5 is embedded in order to circulate the heat medium returning. And in the place where the piping 5 for fluids cross | intersects the valley fold part 6a and the valley fold part 6b, when the valley fold 6a and the valley fold part 6b make a valley fold, the fluid pipe 5 buckles. Means are provided for preventing. Means for preventing buckling of the fluid pipe 5 is not particularly limited, and examples thereof include means for embedding the fluid pipe 5 at a certain distance along the valley fold 6a and the valley fold 6b. By doing so, when folded at the valley fold 6a and the valley fold 6b, the fluid pipe 5 embedded along the valley fold 6a and the valley fold 6b is twisted in the bending direction to be seated. Can prevent bending. This buckling prevention means is also provided at a location where the fluid pipe 5 is disposed across the adjacent base in the connecting portions 4, 4.

  FIG. 2 is a top view schematically showing the base 3a in order to easily understand the configurations of the base 3a, the base 3b, the base 3c, the base 3d, the base 3e, and the base 3f. 2, components having the same configuration as in FIG. 1 are denoted by the same reference numerals as those used in FIG. 1, and description thereof will be omitted as appropriate.

  As shown in FIG. 2, the base plate 3a has a plurality of plate-like bodies 2, 2,..., Small joists 9a, 9a,..., And small joists 9b, 9b,. The plate-like bodies 2, 2,... Have plate-like bodies 2a, 2a,... Having a curved portion of the groove 1 and plate-like bodies 2b, 2b,. is there. The plate-like bodies 2a, 2a,... And the plate-like bodies 2b, 2b,... Can be manufactured with an integral mold or the like, but the plate-like bodies 2a, 2a,. ,... Are manufactured using separate molds and the like, and then the base 3a can be easily manufactured by combining them.

  Similarly to the base 3a, the base 3b, the base 3c, the base 3d, the base 3e, and the base 3f have a plurality of plate-like bodies 2, 2,..., Small joists 9a, 9a, ... and small radish 9b, 9b, ... are provided. On the other hand, the small board | substrate 7 is comprised with the plate-shaped member by which the groove | channel 1 was engraved on the single side | surface, and this may be comprised from one member, even if it is the structure which combined the several member. good.

  FIG. 3 shows the base plate 3a, the base plate 3b, the base plate 3c, the base plate 3d, the base plate 3e, the base plate 3f, and the small base plate 7 constituting the heat radiating plate 10 in an easy-to-understand manner. FIG. 3, components having the same configuration as in FIG. 1 are denoted by the same reference numerals as those used in FIG. 1, and description thereof will be omitted as appropriate.

The connection part shown by the broken line in FIG. 3 means that valley folding is possible, and the connection part shown by the dotted line means that mountain folding is possible. The form of the connecting part 4a and the connecting part 4c is not particularly limited as long as valley folding is possible. Specifically, for example, the upper surfaces of the base 3a and the base 3b and the base 3d and the base 3e are connected with a continuous metal soaking plate (for example, aluminum foil) and the lower surface is not connected. Thus, it is possible to form a valley. The valley fold 6a and the valley fold 6b can also be folded. In order to enable valley folding at the valley fold 6a and the valley fold 6b, specifically, for example, the base 3a and the small base 7, and the metal that has the upper surface of the base 3d and the small base 7 continuous. By connecting with a soaking plate made of the product and not connecting the lower surface, it is possible to form a valley. On the other hand, the form of the connecting part 4b and the connecting part 4d is not particularly limited as long as the connecting part 4b and the connecting part 4d can be mountain-folded. Specifically, for example, in the connecting portion 4b and the connecting portion 4d, the base plate 3b, the base plate 3c, and the heat equalizing plates attached to the top surfaces of the base plate 3e and the base plate 3f are discontinuous, and the bottom surface is adhesive. It can be set as the form which can be mountain-folded by sticking and connecting with the tape which has.

  FIG. 4 is a view showing how the heat sink 10 is folded. 4A and 4B are views of the heat radiating plate 10 viewed from the Y direction shown in FIG. FIG. 4C is a view of the heat sink 10 viewed from the upper side of the drawing. FIG. 4D is a view of the heat radiating plate 10 viewed from the direction X shown in FIG. 4E is a view of the heat sink 10 viewed from the X direction shown in FIG. 3, and the right view of FIG. 4E is a heat sink from the Y direction shown in FIG. FIG. Moreover, the dotted line and the arrow have shown that the member which was in the position of a dotted line moved to the direction of the arrow. 4, components having the same configuration as in FIG. 1 are denoted by the same reference numerals as those used in FIG. 1, and description thereof will be omitted as appropriate. Moreover, in order to prevent the drawing from becoming complicated, some symbols are omitted.

As shown in FIG. 4A, the procedure for folding the heat sink 10 is first performed by folding the connecting portion 4b and the connecting portion 4d, and as shown in FIG. 4B, in the connecting portion 4a and the connecting portion 4c. Make a valley break. Here, the order of folding the connecting portion 4b, the connecting portion 4d, the connecting portion 4a, and the connecting portion 4c may be any order. When the connecting portion 4b, the connecting portion 4d, the connecting portion 4a, and the connecting portion 4c are folded, there is no other base on the small base 7 as shown in FIG. Next, as shown in FIG.4 (d), it folds as shown in FIG.4 (e) by making a valley fold with the valley fold part 6a and the valley fold part 6b. At this time, by providing a substantially linear notch in the small base 7 (not shown), it becomes easy to fold the valley at the valley fold 6a and the valley fold 6b. Here, the substantially linear notch provided in the small base 7 may be provided in a part of the small base 7 or is continuous from one end side to the other end of the small base 7. May be provided. Furthermore, it is preferable that a substantially linear notch is provided in the vicinity of the valley fold 6a of the base 3a and / or in the vicinity of the valley fold 6b of the base 3d, which facilitates valley folding. As the shape of the “notch”, for example, a shape in which recesses are continuously formed at regular intervals like a perforation, a shape in which peaks and valleys are continuously formed, a U-shaped cross section or a cross section Examples include a U-shape formed continuously.
Further, in the connecting portions 4, 4,..., The valley fold portion 6 a, and the valley fold portion 6 b, the fluid pipe 5 is buckled at the place where the fluid pipe 5 is disposed across the adjacent bases. Since the prevention means is provided, the fluid pipe 5 can be folded without buckling.

  Thus, the heat sink 10 can be folded in a direction that is perpendicular to the direction and then folded in a direction that is perpendicular to the direction and is small and easy to deploy. Therefore, according to the present invention, it is possible to provide a foldable heat sink that can be easily packed, transported, and laid and that can prevent buckling of the fluid piping.

  In the description so far, only the form in which the small base is provided at the end of the folding heat sink has been described, but the present invention is not limited to such form.

  For example, as shown in FIGS. 5 and 6, the small base 7 may not be provided at the end of the folding heat sink 50. FIG. 5 is a top view schematically showing how the bases constituting the folding heat sink 50 (hereinafter simply referred to as “heat sink 50”) according to the present invention are connected. FIG. 6 is a top view schematically showing how the bases constituting the folding heat sink 60 (hereinafter simply referred to as “heat sink 60”) according to the present invention are connected. In FIGS. 5 and 6, the same reference numerals as those used in FIG. 3 are given to components having the same configuration as in FIG. 3, and description thereof will be omitted as appropriate.

  In the heat radiating plate 50, the small base 7 is provided at a position close to the center side from the end of the heat radiating plate 50. In the heat sink 50, the adjacent bases are connected via the connecting portions 4, 4,..., And the adjacent bases are not connected to each other via the boundary line 58. Further, m is the distance from the end face of the small base 7 to the boundary line including the connecting portion 4e (4f), and n is the distance from the connecting portion 4e (4f) to the boundary line including the connecting portion 4b (4d). When n is a relationship of n ≦ m, the small base 7 can be seen from above when folded at the connecting portions 4, 4,. Therefore, it is possible to fold at the valley folds 56a and the valley folds 56b after folding at the connecting portions 4, 4,. That is, after the heat sink 50 is folded in one direction, it can also be folded in a direction orthogonal to the direction, and folded into a state where it can be easily developed.

  In the heat sink 60, the small base 7 is provided near the center of the heat sink 60. The connecting portions 4, 4,... Connect adjacent bases in a form that allows valley folding, and the adjacent bases are not connected to each other via a boundary line 68. Further, s is the distance from the end surface of the heat sink 60 to the boundary line including the connecting portion 4g (4i), t is the distance from the boundary line including the connecting portion 4g (4i) to the end surface of the small base 7, and U, which is the distance from the end surface of the small base 7 to the boundary line including the connecting portion 4h (4j), and v, which is the distance from the boundary line including the connecting portion 4h (4j) to the end surface of the heat sink 60, is s. By satisfying the relationship of ≦ t and v ≦ u, it is possible to fold at the valley fold 66a and the valley fold 66b after the valley fold at the connecting portions 4, 4,. That is, the foldable heat radiation plate 60 can be folded in a direction that is easy to deploy after being folded in one direction and then also in a direction orthogonal to the direction.

  However, from the viewpoint of folding the foldable heat sink smaller, it is preferable that the small base 7 is provided at the end of the foldable heat sink like the heat sink 10.

  Moreover, although the description so far has described the form in which only one small base is provided, the present invention is not limited to such a form. For example, a configuration in which a plurality of small bases are provided by providing one small base between adjacent bases and further providing another small base between other bases may be possible.

  In the above description, the two bases 3a and 3d are provided with recesses having the same shape, and the gap is formed by combining them. However, the present invention is limited to such a form. is not. FIG. 7 is a view focusing on the vicinity of the place where the small base is provided. FIG. 7A shows a form in which the base 3a and the base 3d are provided with recesses having the same shape and a gap is formed by combining them as described above. However, it is sufficient that the small base is provided between the two bases. For example, as shown in FIG. 7B, one base 3h is provided with a recess, and the other base 3g is not provided. May be.

  In the above description, a description has been given of a mode in which a substantially rectangular or U-shaped gap is formed between two bases, and a small base is provided in the gap. However, the present invention is limited to such a mode. It is not done. For example, a substantially rectangular or U-shaped small base may be provided between two bases by separating a part of the base. In other words, as described above, the small base is not manufactured as a separate member from the two bases adjacent to the small base, but one of the two bases adjacent to the small base. Or the form produced as a member integral with both may be sufficient.

  A specific example will be described with reference to FIG. FIG. 8 is an enlarged view schematically showing only the peripheral portion of the small base 87 provided in the folding heat sink according to the present invention.

  As shown in FIG. 8, a base 3 i and a base 3 j are adjacent to the small base 87. The small base 87 is manufactured as a member integral with the base 3i and / or the base 3j, and the valley fold 86a and the valley fold 86b are in a form that can be folded. As used herein, “a form that can be folded” means that the small base 87 and the base 3i and / or the base 3j are integral members, but slits are made in the valley fold 86a and the valley fold 86b. And it means the form which can be folded at the valley fold part 86a and the valley fold part 86b by applying force. By adopting such a form, when folded at the valley fold part 86a and the valley fold part 86b, the base 3i, the base 3j, and the small base 87 become separate members, and the form described so far Similarly, it can be folded into an easy-to-deploy state.

  Moreover, although the description so far has described the form in which the small base is substantially rectangular, the present invention is not limited to such form. The small base is connected to the base adjacent to the small base in a form that can be folded, and fluid pipes may be connected to the base connected to the small base via the small base. For example, a U-shape may be used.

  While the present invention has been described in connection with embodiments that are presently the most practical and preferred, the present invention is not limited to the embodiments disclosed herein. However, the present invention can be changed as appropriate without departing from the spirit or concept of the invention which can be read from the claims and the entire specification, and a foldable heat sink accompanying such a change is also included in the technical scope of the present invention. It must be understood as a thing.

It is a figure which shows roughly the top view of the folding-type heat sink. It is a figure which shows roughly the top view of the base | substrate 3a. It is a figure which shows how to connect each base | substrate which comprises the foldable heat sink. It is a figure which shows how to fold the folding-type heat sink. It is a figure which shows how to connect each base | substrate which comprises the folding type heat sink. It is a figure which shows how to connect each base | substrate which comprises the folding type heat sink 60. FIG. (A) is a figure which shows the positional relationship of the small base | substrate 7 and the base | substrates 3a and 3d. (B) is a figure which shows the positional relationship of the small base | substrate 7 and the base | substrates 3g and 3h. It is a figure which expands and shows only the peripheral part of the small base | substrate 87 roughly.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Groove 2 Plate-shaped body 3 Base 4 Connection part 5 Fluid piping 6a, 6b Valley fold part 7 Small base 8 Boundary line 9a Small root 9b Small small root 10 Folding type heat sink 11 Header

Claims (5)

It is a foldable heat radiating plate comprising a plurality of plate-like bodies each having a groove engraved on one side, a plurality of bases having a substantially rectangular plane shape arranged vertically and horizontally, and fluid piping embedded in the groove. And
Among the bases, between the adjacent bases, at least one gap having a substantially rectangular shape or a U-shape is formed, and a small base with the groove formed on one side is formed in the gap. Arranged,
The small base is connected to the base forming the gap through a valley foldable portion, and the fluid pipe communicates with the base forming the gap through the small base. And
The bases adjacent to each other at positions included between the extended lines of the valley folds are not connected to each other, and the bases adjacent to each other at other positions are connected in a foldable form. , Folding heat sink. The foldable heat sink according to claim 1, wherein a substantially linear notch is provided on a surface of the small base on which the groove is not engraved. The folding heat sink according to claim 1 or 2, wherein the valley folding part is provided with means for preventing buckling of the fluid pipe. The folding heat sink according to any one of claims 1 to 3, wherein the small base is exposed when the base arranged in a direction substantially parallel to the valley fold is folded. . It is a foldable heat radiating plate comprising a plurality of plate-like bodies each having a groove engraved on one side, a plurality of bases having a substantially rectangular plane shape arranged vertically and horizontally, and fluid piping embedded in the groove. And
Among the bases, between adjacent bases, the planar shape is a substantially rectangular or U-shaped small base, and the groove is engraved on one side of the small base,
The small base is connected to the base via a valley foldable portion, and the fluid pipe communicates with the base connected to the small base via the small base,
The bases adjacent to each other at positions included between the extended lines of the valley folds are not connected to each other, and the bases adjacent to each other at other positions are connected in a foldable form. , Folding heat sink.

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