JP6623051B2 - heatsink - Google Patents

Description

  The present invention relates to a heat sink for cooling a heating element, for example, a heat sink for cooling illumination using a light emitting diode (LED) element installed on a ceiling.

  Since LED lighting is easily affected by heat in its lifetime and luminous efficiency, it is necessary to always cool it during light emission so as to maintain the temperature within an allowable range. A heat sink may be used to cool the LED lighting.

  As a conventional heat sink, it is comprised from the board | substrate part by which the LED light source is arrange | positioned in the front side, and the several fin part which protrudes in the back side of a board | substrate part, and a part of at least 1 fin part is right-angled from a fin part main body. The fin part bent piece is bent from the aluminum extruded material, which has a heat radiating surface in a direction orthogonal to the heat radiating surface of the fin part main body and the heat radiating surface of the board part. A formed heat sink for LED lighting has been proposed (Patent Document 1).

  The heat sink for LED illumination of Patent Document 1 has a fin portion protruding in the vertical direction on the back surface of the substrate portion, so that it can pass through an embedding hole of a predetermined size provided in the ceiling. It can be used for cooling LED lighting. On the other hand, in order to increase the heat dissipation surface of the fin portion in order to improve the cooling capacity of the heat sink, it is necessary to extend the fin portion in a direction perpendicular to the ceiling surface. However, in order to cool the LED lighting installed on the ceiling, the heat sink needs to be attached to the back of the ceiling. There has been a problem that the LED illumination cannot be sufficiently cooled, that is, there is a problem that the output of the coolable LED illumination is limited.

  Also, since the tip side of the fin part is located away from the LED, the temperature of the fin part is the lowest, whereas the air on the tip side of the fin part is naturally convected from the LED side to the tip side of the fin part. The temperature is high because the air flows while exchanging heat. Therefore, since the temperature difference from the surrounding air becomes smaller as the tip side of the fin part is located farther from the LED, even if the fin part is extended in the direction perpendicular to the substrate part, it contributes sufficiently to the cooling performance. There is a problem that the heat dissipation efficiency of the fin portion is insufficient.

  Furthermore, the heat sink formed from the aluminum extruded material has a problem that it is difficult to reduce the weight because the thickness of the fin portion is more than a certain value.

JP 2012-204509 A

  In view of the above circumstances, an object of the present invention is to provide a heat sink that is excellent in heat dissipation efficiency of a heat radiating fin, can be sufficiently cooled even in high-power LED lighting installed on a ceiling, and can be further reduced in weight.

  An aspect of the present invention includes a heat receiving plate thermally connected to the heating element on the back surface side, and a radiation fin provided on the surface side of the heat receiving plate and thermally connected to the heat receiving plate, A heat sink installed through a predetermined embedding hole, wherein a part of the heat radiating fin protrudes outside a region formed in a direction perpendicular to the opening surface of the embedding hole. It is a heat sink.

  In the above aspect, the radiation fins extend from the heat receiving plate to the outside of the heat receiving plate in plan view. Further, in a plan view, the heat radiation fin extends from a region corresponding to the opening surface of the embedded hole through which the heat sink passes through to the outside of the region corresponding to the opening surface. In addition, in this specification, "plan view" means the aspect seen from the side facing the surface of the heat receiving plate provided with the radiation fin and / or the heat pipe. Therefore, in the said aspect, the radiation fin is extended to the outer side of the heat receiving plate in the direction parallel to the surface of the heat receiving plate. Furthermore, the radiation fin extends to the outside of the opening surface in a direction parallel to the region corresponding to the opening surface.

  An aspect of the present invention is a heat sink in which a heat pipe that thermally connects the heat receiving plate and the radiation fin is further provided.

  In the aspect of the present invention, the heat radiating fin includes one linear portion, the other linear portion, and a bent portion formed between the one linear portion and the other linear portion. It is a heat sink.

  Aspects of the present invention include a heat receiving plate that is thermally connected to the heating element on the back surface side, a first heat radiation fin that is provided on the surface side of the heat receiving plate and is thermally connected to the heat receiving plate, A heat pipe provided on the surface side of the heat receiving plate and thermally connected to the heat receiving plate at one end; a second radiating fin thermally connected to the other end of the heat pipe; And a heat sink installed through a predetermined embedding hole, wherein the second heat dissipating fin is disposed outside a region formed in a direction perpendicular to the opening surface of the embedding hole. It is a heat sink in which the part of the part or the whole protrudes.

  In the above aspect, the second radiating fin is thermally connected to the heat receiving plate via the heat pipe, and in a plan view, from the region corresponding to the opening surface to the outside of the region corresponding to the opening surface, The second heat radiating fin is extended, or the second heat radiating fin is disposed outside the region corresponding to the opening surface in a plan view. Therefore, in a direction parallel to the region corresponding to the opening surface, the second radiating fin extends to the outside of the region corresponding to the opening surface, or the second radiating fin extends outside the region corresponding to the opening surface. Two radiating fins are installed.

  Aspects of the present invention include a heat receiving plate that is thermally connected to the heating element on the back surface side, a first heat radiation fin that is provided on the surface side of the heat receiving plate and is thermally connected to the heat receiving plate, A heat pipe provided on the surface side of the heat receiving plate and thermally connected to the heat receiving plate at one end, and a plurality of second radiating fins thermally connected to the other end of the heat pipe And a heat sink installed through a predetermined embedding hole, wherein the plurality of second heat sinks are disposed outside a region formed in a direction perpendicular to the opening surface of the embedding hole. It is a heat sink in which a part of the second radiating fins or all the second radiating fins of the radiating fins protrude.

  In the above aspect, each of the plurality of second radiating fins is thermally connected to the heat receiving plate via the heat pipe, and the plurality of second radiating fins are outside the region corresponding to the opening surface in a plan view. Of the radiating fins, some or all of the second radiating fins are installed. Accordingly, in a direction parallel to the region corresponding to the opening surface, a part of the second radiating fins or all the second radiating fins out of the region corresponding to the opening surface are provided outside the region corresponding to the opening surface. Radiating fins are installed.

  Aspects of the present invention include a heat receiving plate that is thermally connected to the heating element on the back surface side, and a heat pipe that is provided on the surface side of the heat receiving plate and is thermally connected to the heat receiving plate at one end. A heat sink that is thermally connected to the other end of the heat pipe, and is installed through a predetermined embedding hole, with respect to the opening surface of the embedding hole And a heat sink in which a part or the whole of the radiating fin protrudes outside a region formed in the vertical direction.

  In the above aspect, the radiating fin is thermally connected to the heat receiving plate via the heat pipe, and in a plan view, the radiating fin extends from the region corresponding to the opening surface to the outside of the region corresponding to the opening surface. The heat dissipating fins are installed outside the region corresponding to the opening surface in a plan view.

  Aspects of the present invention include a heat receiving plate that is thermally connected to the heating element on the back surface side, and a heat pipe that is provided on the surface side of the heat receiving plate and is thermally connected to the heat receiving plate at one end. A heat sink that has a plurality of heat radiation fins thermally connected to the other end of the heat pipe, and is installed through a predetermined embedding hole, the opening surface of the embedding hole In the heat sink, a part of the plurality of heat radiation fins or the whole heat radiation fin protrudes outside the region formed in the vertical direction.

  In the above aspect, each of the plurality of radiating fins is thermally connected to the heat receiving plate via a heat pipe, and in a plan view, outside the region corresponding to the opening surface, Some radiating fins or all radiating fins are installed.

  A first aspect of the present invention is a heat receiving plate that is thermally connected to the heating element on the back surface side, and is provided on the front surface side of the heat receiving plate, and is thermally connected to the heat receiving plate at one end. A heat pipe, a third heat radiating fin thermally connected to the other end of the first heat pipe, and a second heat pipe thermally connected to the heat receiving plate at one end. A fourth heat dissipating fin thermally connected to the other end of the second heat pipe, and a heat sink installed through a predetermined embedding hole, It is a heat sink in which a part of or the whole of the third radiating fin and / or the fourth radiating fin protrudes outside a region formed in a direction perpendicular to the opening surface of the hole.

  In the said aspect, the 3rd radiation fin thermally connected with the 1st heat pipe and the 4th radiation fin thermally connected with the 2nd heat pipe are separate bodies, and all the radiation fins It is thermally connected to the heat receiving plate via a heat pipe. In the above aspect, the third radiating fin and / or the fourth radiating fin extends from the region corresponding to the opening surface to the outside of the region corresponding to the opening surface in plan view. Alternatively, the third radiating fin and / or the fourth radiating fin is provided outside the region corresponding to the opening surface in plan view.

  A first aspect of the present invention is a heat receiving plate that is thermally connected to the heating element on the back surface side, and is provided on the front surface side of the heat receiving plate, and is thermally connected to the heat receiving plate at one end. A heat pipe, a plurality of third radiating fins thermally connected to the other end of the first heat pipe, and a second heat thermally connected to the heat receiving plate at one end A heat sink having a pipe and a plurality of fourth radiating fins thermally connected to the other end of the second heat pipe and installed through a predetermined embedding hole, And a part of the third radiating fins and / or a part of the fourth radiating fins or all of the radiating fins outside a region formed in a direction perpendicular to the opening surface of the embedded hole. Is a protruding heat sink.

  In the said aspect, the 3rd radiation fin thermally connected with the 1st heat pipe and the 4th radiation fin thermally connected with the 2nd heat pipe are separate bodies, and all the radiation fins It is thermally connected to the heat receiving plate via a heat pipe. Further, in the above aspect, in a plan view, a part of the plurality of third radiating fins and / or a plurality of the fourth radiating fins or all of the radiating fins outside the region corresponding to the opening surface. Fins are installed.

  An aspect of the present invention is a heat sink for cooling illumination using LED elements, which is installed through the embedded hole.

  According to an aspect of the present invention, an outside of a region formed in a direction perpendicular to the opening surface of the embedded hole of the heat sink is passed through the embedded hole, and then the heat receiving plate is used as the embedded hole. It is a cooling method of a heating element using a heat sink, in which the heat sink is installed by fitting.

  According to the aspect of the present invention, since the heat radiating fin protrudes outside the region formed in the direction perpendicular to the opening surface of the embedded hole, the heat radiating fin is not increased without increasing the dimension in the height direction of the heat sink. Thus, the heat radiation efficiency of the heat radiation fin can be obtained. As described above, the heat dissipation efficiency of the heat dissipation fins can be improved without increasing the size of the heatsink in the height direction. For example, sufficient cooling can be achieved even in high-power LED lighting installed on the ceiling. it can.

  In addition, since the distance between the tip of the radiating fin and the heat receiving plate can be reduced in the direction perpendicular to the surface of the heat receiving plate, there is a temperature difference between the tip of the radiating fin and the surrounding air. The tip portion of the can also contribute sufficiently to the cooling performance, and excellent heat dissipation efficiency of the heat dissipation fins can be obtained.

  According to the aspect of the present invention, it is possible to reduce the thickness of the heat dissipating fin as compared with the heat sink formed from the extruded material, so that the weight can be reduced.

It is a perspective view of the heat sink concerning the example of a 1st embodiment of the present invention. It is a perspective view of the heat sink concerning the example of a 2nd embodiment of the present invention. It is a perspective view of the heat sink concerning the example of a 3rd embodiment of the present invention. It is a perspective view of the heat sink which concerns on the example of 4th Embodiment of this invention. It is a perspective view of the heat sink concerning the example of a 5th embodiment of the present invention. It is a perspective view of the heat sink concerning the 6th example of an embodiment of the present invention. It is a perspective view of the heat sink concerning the example of a 7th embodiment of the present invention. It is a perspective view of the heat sink which concerns on the example of 8th Embodiment of this invention. It is a perspective view of the heat sink which concerns on the example of 9th Embodiment of this invention. It is a perspective view of the heat sink which concerns on the 10th Embodiment example of this invention. It is explanatory drawing of the usage example of the heat sink which concerns on the 7th Example of this invention. It is explanatory drawing of the usage example of the heat sink which concerns on the example of 8th Embodiment of this invention.

  Hereinafter, a heat sink according to a first embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, the heat sink 1 according to the first embodiment is thermally connected to a heating element (not shown) on a heat receiving side surface (hereinafter sometimes referred to as “back side”). A flat plate-shaped heat receiving plate 10 (in the figure, a substantially circular shape in plan view) and a surface opposite to the heat receiving side of the heat receiving plate 10 (hereinafter, sometimes referred to as “surface side”) stand on the heat receiving plate 10. In the installed state, the heat receiving plate 10 is provided and the radiation fin 11 thermally connected. The heat sink 1 is installed through the opening surface 102 of the embedding hole. Therefore, in the heat sink 1, the opening surface 102 of the embedded hole has the same size and shape as the surface of the heat receiving plate 10, or the same shape as the surface of the heat receiving plate 10 and has a larger area than the surface of the heat receiving plate 10. ing. In FIG. 1, the opening surface 102 of the embedded hole has the same shape as the surface of the heat receiving plate 10 and has a larger area than the surface of the heat receiving plate 10.

  The radiating fins 11 have a flat plate shape that is thinner than the thickness of the heat receiving plate 10. The radiating fin 11 has one linear portion 12 whose end is fixed to the heat receiving plate 10, the other linear portion 14 whose end is a free end, one linear portion 12 and the other linear portion 14. And a bent portion 13 formed between the two. Further, the heat radiation fin 11 is formed so that one straight line portion 12 and the other straight line portion 14 are positioned in the orthogonal direction via the bent portion 13. Accordingly, the radiating fin 11 is substantially L-shaped, and the end of one linear portion 12 is fixed to the heat receiving plate 10, so that the heat receiving plate 10 is thermally applied to the heat receiving plate 10 in a substantially inverted L shape as viewed from the side. It is connected. Further, the other straight portion 14 extends in a parallel direction or a substantially parallel direction with respect to the surface of the heat receiving plate 10.

  In the heat sink 1, the entire end portion of one linear portion 12 is fixed to the surface side of the heat receiving plate 10. Therefore, the end portion of the one linear portion 12 is not protruded to the outside of the heat receiving plate 10, that is, is not protruded.

  In the heat sink 1, a plurality of heat radiation fins 11 are provided, and each heat radiation fin 11 is arranged in parallel in a parallel direction or a substantially parallel direction with respect to the surface of another heat radiation fin 11 adjacent thereto. Has been. In each of the radiating fins 11, the end of the other straight portion 14 protrudes outside a region 100 formed in a direction perpendicular to the opening surface 102 of the embedding hole. In FIG. 1, substantially the entire other linear portion 14 (a portion exceeding half in the drawing) protrudes outside a region 100 formed in a direction perpendicular to the opening surface 102 of the embedding hole.

  From the above, in the heat sink 1, one straight portion 12 of the radiating fin 11 is disposed at a position overlapping the opening surface 102 of the embedding hole in a plan view, and the other straight portion 14 of the radiating fin 11 is substantially the whole ( In the figure, more than half of the portion) is disposed at a position where it does not overlap with the opening surface 102 of the embedding hole.

  The method of installing the radiating fins 11 on the heat receiving plate 10 is not particularly limited. For example, a groove portion having a size and a shape corresponding to the size and shape of the end of one linear portion 12 is formed on the surface side of the heat receiving plate 10. There is a method in which the end of one straight portion 12 is fitted into the groove and then fixed by soldering or the like.

  The materials of the heat receiving plate 10 and the radiation fins 11 are all metals having good thermal conductivity, and are made of, for example, aluminum, aluminum alloy, copper, copper alloy or the like.

  In the heat sink 1, the heat radiation fin 11 (in FIG. 1, the other straight portion 14 of the heat radiation fin 11) projects outside the region 100 formed in the direction perpendicular to the opening surface 102 of the embedded hole. The heat radiation surface of the heat radiation fin 11 can be increased without increasing the dimension in the height direction of 1, and excellent heat radiation efficiency of the heat radiation fin 11 can be obtained. Further, in the heat sink 1, the heat radiating fin 11 can be erected on the heat receiving plate 10 by fitting the end portion of one linear portion 12 of the heat radiating fin 11 into the groove formed on the surface side of the heat receiving plate 10. The thickness can be reduced, and the weight can be reduced as compared with a heat sink formed from an extruded material.

  Next, a heat sink according to a second embodiment of the present invention will be described with reference to the drawings. The same components as those of the heat sink according to the first embodiment will be described using the same reference numerals.

  As shown in FIG. 2, the heat sink 2 according to the second embodiment is further provided with a heat pipe 15 that thermally connects the heat receiving plate 10 and the radiation fins 11. In the heat sink 2, a plurality of heat pipes 15 (two in FIG. 2) are provided. For each heat pipe 15, one end of the heat pipe 15 is in contact with the end of one straight portion 12 of the heat receiving plate 10 and each radiating fin 11 to form an evaporation portion, and the other end is the other end of each radiating fin 11. The condensing part is formed in contact with the straight part 14.

  In the heat sink 2, a groove having a size and shape corresponding to the size and shape of one end of the heat pipe 15 is formed on the surface side of the heat receiving plate 10, and one end of the heat pipe 15 is fitted into the groove. Thus, one end of the heat pipe 15 and the heat receiving plate 10 are thermally connected. In addition, the other linear portion 14 of each radiating fin 11 is provided with a hole having a size and shape corresponding to the size and shape of the other end of the heat pipe 15, and the other hole of the heat pipe 15 is provided in the hole. By inserting and inserting the end portion, the other end portion of the heat pipe 15 and the radiating fin 11 are thermally connected.

  The material of the container of the heat pipe 15 is also made of the same metal material as the heat receiving plate 10 and the heat radiating fins 11. As the working fluid of the heat pipe 15, a working fluid having compatibility with the container material is sealed in a reduced pressure state. Examples of the working fluid include water and alternative chlorofluorocarbon.

  In the heat sink 2, heat is transported from the heat receiving plate 10 to the tip of the heat radiation fin 11 by the heat pipe 15, so that the heat radiation efficiency of the entire heat radiation fin 11 is further improved.

  Next, a heat sink according to a third embodiment of the present invention will be described with reference to the drawings. The same constituent elements as those of the heat sink according to the first and second embodiments will be described using the same reference numerals.

  As shown in FIG. 3, in the heat sink 3 according to the third embodiment, one straight portion 12, the other straight portion 14, and one straight portion used in the heat sink 2 according to the second embodiment. In place of the radiating fin 11 having the bent portion 13 formed between the straight line portion 12 and the other straight portion 14, a radiating fin in which one straight portion and the other straight portion are separated is provided. Yes.

  That is, in the heat sink 3, the first radiating fin 21 that is erected on the surface side of the heat receiving plate 10 and is thermally connected to the heat receiving plate 10, and one end thereof are thermally connected to the heat receiving plate 10. The other end of the heat pipe 15 is thermally connected by directly contacting the second radiating fin 22, which is a separate body from the first radiating fin 21. Since neither the 1st radiation fin 21 nor the 2nd radiation fin 22 has a bending part, it has a substantially rectangular shape. The second heat radiation fins 22 extend in a parallel direction or a substantially parallel direction with respect to the surface of the heat receiving plate 10.

  In the heat sink 3, the first heat radiating fins 21 release the heat transferred from the heat receiving plate 10 to the first heat radiating fins 21, and the second heat radiating fins 22 are connected to the heat pipe 15 from the heat receiving plate 10. The heat transported to the second radiation fin 22 is released to the outside.

  In the heat sink 3, there are provided a plurality of first radiating fins 21 and second radiating fins 22, and the surface of the first radiating fin 21 and the surface of the second radiating fin 22 are parallel or substantially parallel to each other. They are arranged in parallel.

  In the heat sink 3, the second radiating fin 22 protrudes outside the region 100 formed in the direction perpendicular to the opening surface 102 of the embedding hole. In FIG. 3, substantially the entire second radiating fin 22 (a portion exceeding half in the drawing) protrudes outside the region 100 formed in the direction perpendicular to the opening surface 102 of the embedding hole. On the other hand, the first radiating fins 21 are arranged inside a region 100 formed in a direction perpendicular to the opening surface 102 of the embedding hole.

  From the above, in the heat sink 3, the first heat dissipating fin 21 is disposed at a position where the entire first heat dissipating fin 21 overlaps the opening surface 102 of the embedding hole, and the second heat dissipating fin 22 is substantially the whole (see FIG. Then, more than half of the portion) is arranged at a position that does not overlap the opening surface 102 of the embedding hole.

  Also in the heat sink 3, the second radiation fins 22 (substantially the entire second radiation fins 22 in FIG. 3) protrude outside the region 100 formed in the direction perpendicular to the opening surface 102 of the embedded hole. Therefore, without increasing the dimension of the heat sink 3 in the height direction, the heat radiating surface of the heat radiating fin can be increased, and excellent heat radiating efficiency of the heat radiating fin can be obtained.

  Next, a heat sink according to a fourth embodiment of the present invention will be described with reference to the drawings. In addition, about the same component as the heat sink concerning the example of 1st-3rd embodiment, it demonstrates using the same code | symbol.

  As shown in FIG. 4, in the heat sink 4 according to the fourth embodiment, the surface of the first radiating fin 21 and the surface of the second radiating fin 22 of the heat sink 3 according to the third embodiment are mutually Instead of being arranged in parallel or substantially in parallel, the surface of the first radiating fin 21 is arranged in a direction perpendicular to or substantially perpendicular to the surface of the second radiating fin 22.

  Similarly to the heat sink 3, the heat sink 4 also has a second heat radiation fin 22 (in FIG. 4, an abbreviation of the second heat radiation fin 22) outside the region 100 formed in the direction perpendicular to the opening surface 102 of the embedded hole. Therefore, the heat radiation surface of the heat radiation fin can be increased without increasing the dimension of the heat sink 4 in the height direction, and excellent heat radiation efficiency of the heat radiation fin can be obtained.

  Next, a heat sink according to a fifth embodiment of the present invention will be described with reference to the drawings. In addition, about the same component as the heat sink which concerns on the 1st-4th embodiment, it demonstrates using the same code | symbol.

  As shown in FIG. 5, in the heat sink 5 according to the fifth embodiment, a plurality of second radiating fins 32 are provided, and among the plurality of second radiating fins 32, some of the second radiating fins 32 are The other part of the second radiating fins 32 is disposed entirely inside the region 100 formed in a direction perpendicular to the opening surface 102 of the embedded hole, and the other part of the second radiating fins 32 is entirely open surface of the embedded hole. It is arranged outside the region 100 formed in a direction perpendicular to the direction 102.

  In the heat sink 5, as in the heat sinks 3 and 4 described above, the first radiating fins 21 erected on the surface side of the heat receiving plate 10 and thermally connected to the heat receiving plate 10 are open surfaces of the embedded holes. It is arranged inside a region 100 formed in a direction perpendicular to 102.

  From the above, in the heat sink 5, the first radiating fin 21 is disposed at a position where the entire first radiating fin 21 overlaps the opening surface 102 of the embedding hole in the plan view, and the second radiating fin 32 includes the plurality of second radiating fins 32. Among the radiating fins 32, a part of the second radiating fins 32 is arranged at a position overlapping the opening surface 102 of the embedded hole, and the other part of the second radiating fins 32 is connected to the opening surface 102 of the embedded hole. Are arranged at positions that do not overlap.

  In the heat sink 5, the surface of the first radiating fin 21 is arranged in a vertical direction or a substantially vertical direction with respect to the surface of the second radiating fin 32. Moreover, the shape of the 1st radiation fin 21 is a substantially rectangular shape. The shape of the second radiating fin 32 is a shape corresponding to the shape of the heat receiving plate (substantially circular in the drawing), but the shape is not particularly limited, and may be, for example, a substantially rectangular shape.

  In the heat sink 5, as in the heat sinks 3 and 4, a part of the second radiation fins 32 protrudes outside the region 100 formed in the direction perpendicular to the opening surface 102 of the embedded hole. The heat radiation surface of the heat radiation fin can be increased without increasing the dimension in the height direction, and excellent heat radiation efficiency of the heat radiation fin can be obtained.

  Next, a heat sink according to a sixth embodiment of the present invention will be described with reference to the drawings. In addition, about the same component as the heat sink which concerns on the 1st-5th embodiment, it demonstrates using the same code | symbol.

  As shown in FIG. 6, in the heat sink 6 according to the sixth embodiment, the surface of the first radiating fin 21 of the heat sink 5 is arranged in the vertical direction or the substantially vertical direction with respect to the surface of the second radiating fin 32. Instead, the surface of the first radiating fin 21 is arranged in a parallel direction or a substantially parallel direction with respect to the surface of the second radiating fin 32.

  Similarly to the heat sink 5 described above, the heat sink 6 can also increase the heat radiating surface of the heat radiating fin without increasing the dimension in the height direction of the heat sink 5, and can obtain excellent heat radiating efficiency of the heat radiating fin. .

  Next, a heat sink according to a seventh embodiment of the present invention will be described with reference to the drawings. In addition, about the same component as the heat sink which concerns on the 1st-6th embodiment, it demonstrates using the same code | symbol.

  As shown in FIG. 7, in the heat sink 7 according to the seventh embodiment, one end portion is in direct contact with the heat receiving plate 10 and is thermally connected (in the figure, a plurality (two) of heat pipes 15. ) And the other end of the heat pipe 15 is thermally connected by being in direct contact with the radiation fins 41. The plurality of heat pipes 15 are thermally connected to the same radiation fins 41, respectively. The radiating fins 41 of the heat sink 7 are not in direct contact with the heat receiving plate 10. Further, the straight portion 44 of the heat radiating fin 41 extends in a parallel direction or a substantially parallel direction with respect to the surface of the heat receiving plate 10. On the surface side of the heat receiving plate 10, no heat radiating fins are provided, and therefore no heat radiating fins that are in direct contact with the heat receiving plate 10 are formed.

  In the heat sink 7, the heat pipe 15 transports heat from the heat receiving plate 10 to the radiation fins 41, and the heat transported to the radiation fins 41 is released from the radiation fins 41 to the outside.

  In the heat sink 7, a plurality of radiating fins 41 are provided, and the surface of each radiating fin 41 is arranged in parallel or substantially parallel to the surface of another radiating fin 41 adjacent thereto. Moreover, although the shape of the radiation fin 41 becomes a shape which has the one linear part 44 and the one bending part 43, this shape is not specifically limited, For example, a substantially rectangular shape may be sufficient.

  In the heat sink 7, the heat radiating fins 41 protrude to the outside of the region 100 formed in the direction perpendicular to the opening surface 102 of the embedded hole. In FIG. 7, a part of the heat radiating fin 41 (in the drawing, a portion of the straight portion 44) protrudes outside the region 100 formed in the direction perpendicular to the opening surface 102 of the embedding hole. On the other hand, the part other than the above (the part of the bent part 43 in the figure) of the heat radiating fin 41 is disposed inside the region 100 formed in the direction perpendicular to the opening surface 102 of the embedding hole.

  From the above, in the heat sink 7, the bent portion 43 of the radiating fin 41 is arranged at a position overlapping the opening surface 102 of the embedded hole in a plan view, and the straight portion 44 of the radiating fin 41 is different from the opening surface 102 of the embedded hole. It is arranged at a position that does not overlap.

  Even in the heat sink 7, a part of the radiation fin 41 (in FIG. 7, the straight portion 44 of the radiation fin 41) protrudes outside the region 100 formed in the direction perpendicular to the opening surface 102 of the embedded hole. Without increasing the dimension of the heat sink 7 in the height direction, the heat radiation surface of the heat radiation fin can be increased, and excellent heat radiation efficiency of the heat radiation fin can be obtained.

  Next, a heat sink according to an eighth embodiment of the present invention will be described with reference to the drawings. In addition, about the same component as the heat sink which concerns on the 1st-7th embodiment, it demonstrates using the same code | symbol.

  As shown in FIG. 8, in the heat sink 8 according to the eighth embodiment, the heat pipe 15 (one or two (two) in the figure) in which one end is thermally connected by directly contacting the heat receiving plate 10. ), And the other end of the heat pipe 15 is thermally connected by being in direct contact with the radiation fin 51. The plurality of heat pipes 15 are thermally connected to the same heat radiation fins 51, respectively. The heat radiation fins 51 of the heat sink 8 are not in direct contact with the heat receiving plate 10. On the surface side of the heat receiving plate 10, no heat radiating fins are provided, and therefore no heat radiating fins that are in direct contact with the heat receiving plate 10 are formed.

  In the heat sink 8, the heat pipe 15 transports heat from the heat receiving plate 10 to the radiation fins 51, and the heat transported to the radiation fins 51 is released from the radiation fins 51 to the outside.

  A plurality of radiation fins 51 are provided, and some of the plurality of radiation fins 51 are disposed inside a region 100 that is formed in a direction perpendicular to the opening surface 102 of the embedded hole. The other part of the radiating fins 51 is arranged outside the region 100 formed entirely in the direction perpendicular to the opening surface 102 of the embedding hole.

  From the above, in the heat sink 8, a part of the plurality of heat radiation fins 51 is arranged at a position overlapping the opening surface 102 of the embedding hole in the plan view, and the other part of the heat radiation fins 51 is buried. It arrange | positions in the position which does not overlap with the opening surface 102 of a penetration hole.

  In the heat sink 8, the shape of the radiation fin 51 is a shape corresponding to the shape of the heat receiving plate 10 (substantially circular in the drawing), but the shape is not particularly limited, and may be, for example, a substantially rectangular shape. .

  Even in the heat sink 8, a part of the heat radiating fins 51 protrudes outside the region 100 formed in the direction perpendicular to the opening surface 102 of the embedding hole, so that the size of the heat sink 8 in the height direction is not increased. The heat radiation surface of the heat radiation fin can be increased, and the heat radiation efficiency of the heat radiation fin can be obtained.

  Next, a heat sink according to a ninth embodiment of the present invention will be described with reference to the drawings. In addition, about the same component as the heat sink which concerns on the 1st-8th embodiment, it demonstrates using the same code | symbol.

  As shown in FIG. 9, in the heat sink 9 according to the ninth embodiment, a plurality of heat pipes 15 of the heat sink 7 according to the seventh embodiment are thermally connected to the same radiation fins 41 respectively. Instead, a plurality (two in the figure) of heat pipes 15 are thermally connected to different radiating fins. That is, among the plurality of heat pipes 15, the first heat pipe 15-1 is thermally connected by being in direct contact with the third heat radiation fin 61-1, and the second heat pipe 15-2 is The third heat radiating fins 61-1 are thermally connected by being in direct contact with the fourth heat radiating fins 61-2.

  In the heat sink 9, the third radiating fin 61-1 protrudes outside the region formed in the direction perpendicular to the opening surface 102 of the embedded hole. On the other hand, the 4th radiation fin 61-2 is arrange | positioned inside the area | region formed in the orthogonal | vertical direction with respect to the opening surface 102 of an embedding hole.

  From the above, in the heat sink 9, the fourth radiating fin 61-2 is disposed at a position overlapping the opening surface 102 of the embedded hole in plan view, and the third radiating fin 61-1 is the opening surface 102 of the embedded hole. Are arranged at positions that do not overlap.

  In the heat sink 9, the third radiating fin 61-1 and the fourth radiating fin 61-2 are separate bodies, and a space is provided between the third radiating fin 61-1 and the fourth radiating fin 61-2. By forming 62, a member (for example, a power supply device of a heating element that is thermally connected to the heat receiving plate 10) can be disposed in the space 62, so that space can be saved.

  Next, a heat sink according to a tenth embodiment of the present invention will be described with reference to the drawings. In addition, about the same component as the heat sink which concerns on the 1st-9th embodiment, it demonstrates using the same code | symbol.

  As shown in FIG. 10, in the heat sink 9 ′ according to the tenth embodiment, the plurality of heat pipes 15 of the heat sink 8 according to the eighth embodiment are thermally connected to the same plurality of radiating fins 51, respectively. Instead of the above embodiment, a plurality (two in the figure) of heat pipes 15 are thermally connected to a plurality of different heat radiation fins. That is, among the plurality of heat pipes 15, the first heat pipe 15-1 is thermally connected by being in direct contact with the plurality of third radiation fins 71-1, and the second heat pipe 15-2 is The third heat radiating fins 71-1 are thermally connected by being in direct contact with a plurality of fourth heat radiating fins 71-2 which are separate bodies.

  Among the plurality of third radiating fins 71-1, some of the third radiating fins 71-1 are arranged inside a region formed entirely in the direction perpendicular to the opening surface 102 of the embedded hole. The other part of the third radiating fins 71-1 is arranged outside the region formed entirely in the direction perpendicular to the opening surface 102 of the embedding hole. Among the plurality of fourth heat radiation fins 71-2, some of the fourth heat radiation fins 71-2 are entirely inside the region formed in the direction perpendicular to the opening surface 102 of the embedded hole. The other part of the fourth radiating fins 71-2 is entirely disposed outside a region formed in a direction perpendicular to the opening surface 102 of the embedding hole.

  From the above, in the heat sink 9 ′, a part of the third heat radiating fins 71-1 and the part of the plurality of third heat radiating fins 71-1 and the plurality of fourth heat radiating fins 71-2 are partly viewed in plan view. The fourth radiating fins 71-2 are arranged at positions where they overlap the opening surface 102 of the embedding hole, and the other part of the third radiating fins 71-1 and the other part of the fourth radiating fins 71-. 2 is arranged at a position where it does not overlap the opening surface 102 of the embedding hole.

  Similarly to the heat sink 9, the third heat radiating fins 71-1 and the fourth heat radiating fins 71-2 are separate from each other in the heat sink 9 ′. Since the space 72 is formed between the space 72 and a member (for example, a power supply device for a heating element that is thermally connected to the heat receiving plate 10), the space 72 can be saved. It becomes.

  Next, an example of how to use the heat sink of the present invention will be described below. The heat sink of the present invention can be used, for example, to cool LED lighting installed on the ceiling. When using the heat sink of the present invention for cooling LED lighting installed on the ceiling, an embedding hole corresponding to the shape and size of the heat receiving plate is formed on the ceiling, and first, perpendicular to the opening surface of the embedding hole The outside of the region formed in the direction is inserted into the embedding hole from the tip thereof, and then further inserted into the embedding hole while moving the heat sink of the present invention along the shape and arrangement of the radiating fin. To go. When the heat receiving plate reaches the position of the embedding hole, the heat receiving plate is fitted into the embedding hole, so that a heat sink for cooling the LED illumination can be installed on the back of the ceiling. The LED illumination which is a to-be-cooled body is thermally connected to the back side. As described above, even in a space with a limited height, such as the back of a ceiling, the heat generator (cooled body) can be cooled by installing the heat sink of the present invention.

  In addition, as shown in FIGS. 11 and 12, in the heat sinks 7 and 8 according to the seventh and eighth embodiments, no radiation fins are provided on the surface side of the heat receiving plate 10, so that space saving is achieved. For this purpose, a member 101 (for example, a power supply device for a heating element that is thermally connected to the heat receiving plate 10) may be disposed on the surface side of the heat receiving plate 10.

  Next, another embodiment of the heat sink of the present invention will be described. In the heat sinks according to the third and fourth embodiments, substantially the entire second radiating fin protrudes outside the region formed in the direction perpendicular to the opening surface of the embedded hole. Instead, only a part of the second radiating fin (for example, a half or less part) may protrude, or the entire second radiating fin may protrude. In the heat sinks according to the fifth and sixth embodiments, some of the second radiating fins are formed in a direction perpendicular to the opening surface of the embedded hole. The other part of the second radiating fins protrudes outside the region formed in the direction perpendicular to the opening surface of the embedding hole. The second radiating fin may protrude outside a region formed in a direction perpendicular to the opening surface of the embedded hole.

  Further, in the heat sink according to the seventh embodiment, a part of the radiation fin protrudes outside the region formed in the direction perpendicular to the opening surface of the embedded hole. The whole heat radiation fin may protrude. In the heat sink according to the eighth embodiment, some of the plurality of heat radiating fins are disposed inside a region formed in a direction perpendicular to the opening surface of the embedded hole. Although some of the radiating fins protruded outside the region formed in the direction perpendicular to the opening surface of the embedded hole, instead of this, all the radiating fins are located on the opening surface of the embedded hole. On the other hand, it may protrude outside the region formed in the vertical direction.

  In the heat sink according to the ninth embodiment, the entire third radiating fin protrudes outside the region formed in the direction perpendicular to the opening surface of the embedded hole, and the entire fourth radiating fin. However, instead of this, only a part of the third radiating fin is provided on the opening surface of the embedding hole. May protrude outside the region formed in the vertical direction, and the entire third radiating fin and a part of the fourth radiating fin are formed in a direction perpendicular to the opening surface of the embedded hole. The entire third and fourth radiating fins may protrude outside the region formed in the direction perpendicular to the opening surface of the embedded hole. .

  Further, in the heat sink according to the tenth embodiment, some of the third radiating fins and some of the fourth radiating fins among the plurality of third radiating fins and the plurality of fourth radiating fins are: The other part of the third radiating fin and the other part of the fourth radiating fin are arranged inside the region formed in the direction perpendicular to the opening surface of the burying hole. However, instead of this, all the third radiating fins and all the fourth radiating fins are protruded from the opening surface of the embedded hole. The region in which all the third radiating fins and some of the fourth radiating fins are formed in a direction perpendicular to the opening surface of the embedded hole may protrude outside the region formed in the vertical direction. And some third radiating fins and all fourth radiating fins may be buried. It may protrude outside the region formed in a direction perpendicular to the opening surface of the hole.

  In the heat sinks according to the second to tenth embodiments, the heat pipe is used as a heat transport means from the heat receiving plate to the radiating fin. However, a metal member such as copper may be used instead. In the heat sink according to each of the above embodiments, the heat receiving plate has a substantially circular shape in plan view. However, the shape of the heat receiving plate is not particularly limited, and may be, for example, a rectangular shape in plan view. For example, when the heat sink of the present invention is used to cool LED lighting installed on the ceiling, the shape and size of the heat receiving plate in plan view may correspond to the shape and size of the ceiling embedding hole.

  Since the heat sink of the present invention can increase the heat dissipation surface of the heat dissipation fin and increase the heat dissipation efficiency of the heat dissipation fin without increasing the dimension in the height direction, for example, LED lighting installed on the ceiling Especially useful in the field of cooling.

DESCRIPTION OF SYMBOLS 1 Heat sink 10 Heat receiving plate 11 Radiation fin 15 Heat pipe

Claims (10)

A heat receiving plate thermally connected to the heating element on the back surface side, a heat radiation fin provided on the surface side of the heat receiving plate and thermally connected to the heat receiving plate, and the heat receiving plate and the heat radiation fin. anda heat pipe connecting, Ri sink der installed through a predetermined embedding hole,
A part of the radiating fin protrudes outside a region formed in a direction perpendicular to the opening surface of the embedding hole, and the other end of the heat pipe protrudes from the protruding part of the radiating fin. Thermally connected heat sink. The heat radiating fins, and one of the straight portions, and the other linear portion of claim 1 having a, and formed bent portion between said the one of the straight portions the other linear portion heatsink. A heat receiving plate thermally connected to the heating element on the back surface side, a first radiating fin provided on the surface side of the heat receiving plate and thermally connected to the heat receiving plate, and a surface side of the heat receiving plate provided, the heat receiving plate via a heat pipe that is receiving heat plate and thermally connected at one end side, said the other end thermally connected to the heat pipe the heat pipe in Rukoto and the second heat radiation fins thermally connected, have, Ri sink der installed through a predetermined embedding hole,
A part or the whole of the second radiating fin protrudes outside a region formed in a direction perpendicular to the opening surface of the embedded hole, and the portion where the second radiating fin protrudes A heat sink in which the other end of the heat pipe is thermally connected . A heat receiving plate thermally connected to the heating element on the back surface side, a first radiating fin provided on the surface side of the heat receiving plate and thermally connected to the heat receiving plate, and a surface side of the heat receiving plate provided, one heat pipe which is receiving thermal plate and thermally connected at the end, the heat receiving plates and heat through the heat pipes at Rukoto connected the the thermally the other end of the heat pipe a manner and a plurality of second heat radiating fins connected to, and Ri sink der installed through a predetermined embedding hole,
Out of the region formed in the direction perpendicular to the opening surface of the embedded hole, some or all of the second radiating fins of the plurality of second radiating fins protrude. Heat sink. A heat receiving plate thermally connected to the heating element on the back side; a heat pipe provided on the surface side of the heat receiving plate and thermally connected to the heat receiving plate at one end; and the other of the heat pipes in connected ends of the thermally anda radiation fins connected the heat receiving plate and thermally via the heat pipes in Rukoto, heat sink installed through a predetermined embedding hole Oh it is,
A part or the whole of the radiating fin protrudes outside a region formed in a direction perpendicular to the opening surface of the embedding hole, and the other end of the heat pipe protrudes to the protruding part of the radiating fin. A heat sink where the parts are thermally connected . A heat receiving plate thermally connected to the heating element on the back side; a heat pipe provided on the surface side of the heat receiving plate and thermally connected to the heat receiving plate at one end; and the other of the heat pipes the heat receiving a plate and a plurality of radiating fins which are thermally connected, and is placed through a predetermined embedding hole via the heat pipe at the ends and Rukoto is thermally connected to heat sink der is,
A heat sink in which some or all of the plurality of radiating fins protrude outside an area formed in a direction perpendicular to the opening surface of the embedded hole. A heat receiving plate thermally connected to the heating element on the back side; a first heat pipe provided on the surface side of the heat receiving plate and thermally connected to the heat receiving plate at one end; a third radiating fin which is the heat receiving plate and thermally connected via the first heat pipe at the other end thermally connected to the first heat pipe in Rukoto, wherein at one end a second heat pipe coupled to the heat receiving plate and the thermal, the other end of the second heat pipe thermally connected to the heat receiving plates and heat through a second heat pipe in Rukoto Ri fourth heat radiating fins have a heat sink der installed through a predetermined embedding hole that is connected,
A part or the whole of the third radiating fin and / or the fourth radiating fin protrudes outside a region formed in a direction perpendicular to the opening surface of the embedded hole, and the third radiating fin projects . The other end of the first heat pipe is thermally connected to the projecting portion of the radiating fin and / or the other end of the second heat pipe is connected to the projecting portion of the fourth radiating fin. A heat sink where the parts are thermally connected . A heat receiving plate thermally connected to the heating element on the back side; a first heat pipe provided on the surface side of the heat receiving plate and thermally connected to the heat receiving plate at one end; a plurality of third radiating fins connected the heat receiving plate and thermally via the first heat pipe at the other end thermally connected to the first heat pipe in Rukoto, one end the heat receiving plate via the heat receiving plate and the second heat pipe and the second heat pipe at the other end thermally connected to the second heat pipe in Rukoto thermally connected in a thermally anda plurality of fourth radiating fins connected, Ri sink der installed through a predetermined embedding hole,
Outside the region formed in the direction perpendicular to the opening surface of the embedded hole, some or all of the third radiating fins and / or the fourth radiating fins are disposed. Protruding heat sink. The heat sink according to any one of claims 1 to 8 , wherein the heat sink is for cooling illumination using an LED element that is installed through the embedded hole. Heat sink according to any one of claims 1 to 9, the outer region formed in a direction perpendicular to the opening surface of the buried hole, after passed through the buried hole, the heat receiving plate A method of cooling a heating element using a heat sink, in which a heat sink is installed by fitting in the embedding hole.

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