JP4151265B2 - Radiator - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a radiator used to radiate heat generating components such as MPUs in personal computers and other electronic devices.
[0002]
[Prior art]
In general, an MPU is used as a functional component in an electronic device, for example, a small electronic device such as a multifunctional and high-performance notebook computer. However, the MPU has a high frequency for image processing and generates heat. For example, heat generation may cause a temperature of about 90 ° C. or higher to cause thermal destruction. Therefore, a cooling device is attached to the MPU, and the heat generated by the MPU is dissipated to make the equipment safe.
[0003]
There is a demand for a small cooling device, and usually there are many cooling devices and radiators. In addition, there is one that conducts heat from the MPU unit to the heat radiator by a heat pipe.
[0004]
FIG. 6 is a perspective view of a conventional cooling device, and FIG. 7 is a configuration diagram of a heat radiating portion in the conventional cooling device. As shown in the drawing, MPU 1 is a flat cooling module casing made of a metal having good thermal conductivity such as aluminum. The cooling module casing 2 is provided with a fan 3 and a radiator 4.
[0005]
The radiator 4 has a large number of fins 5. The fins 5 are formed integrally with the cooling module casing 2, or each fin 5 is attached to the cooling module casing 2 by welding or other welding. The wind of the fan 3 is forcibly blown to each fin 5. Furthermore, heat is conducted from the MPU 1 to the fins 5 of the radiator 4 by the heat pipe 6.
[0006]
As is well known, the heat pipe 6 is configured by providing a capillary portion and enclosing a liquid in a pipe made of a metal having good thermal conductivity such as copper, and receiving heat at one end to receive the internal liquid. The gas is sent to the other end, and the heat is released at the other end to return the gas to the liquid, and the liquid is sent to the one end that receives heat through the capillary part. In this way, a heat exchange effect can be obtained.
[0007]
In this configuration, the heat of the MPU 1 is transmitted to the radiator 4 through the cooling module casing 2 and the heat pipe 6, and the radiator 4 radiates heat by the wind blown by the fan 3, and the expected temperature rise of the MPU 1. It is what suppresses.
[0008]
[Problems to be solved by the invention]
By the way, the radiator 4 having the plurality of fins 5 as described above has a poor heat dissipation efficiency because the heat dissipation area is not sufficient particularly when the size is reduced, and the temperature of the heating element such as the MPU cannot be greatly reduced. In addition, when the fin 5 is not easily assembled and manufactured, and the heat pipe 6 is used in combination, the connection with the heat pipe 6 is not easy, and the distance from the connection point to each end edge of the fin 5 is different. There was a problem that heat could not be effectively radiated from the fin 5.
[0009]
SUMMARY OF THE INVENTION An object of the present invention is to provide a radiator that has good heat dissipation efficiency, is easy to manufacture, and can sufficiently radiate heat even if it is small.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, a radiator of the present invention includes a plurality of metal plates having a honeycomb structure in which first and second metal plates are alternately stacked and reversed to dissipate heat from a heat generating portion, and the metal plates And a cooling fan that blows air on the metal plate , each of which has a plurality of lines of cut lines formed on the metal plate , and the portions between the cut lines are alternately pushed out to the front side and the back side, and the front side protruding part row and the back side The protruding portion rows are alternately provided, and the front-side protruding portion row and the back-side protruding portion row are provided with the trapezoidal protruding portions and the flat portions alternately in rows, and are provided on the first metal plate. characterized in that the flat portions of the protrusions of the front protrusion columns and backside projecting portion array provided on the second metal plate is configured to honeycomb structure by being contacted.
[0011]
According to the present invention, it is possible to realize a radiator that has high heat exchange efficiency, is easy to manufacture, and can sufficiently radiate heat even if it is small.
[0012]
Embodiments of the present invention will be described below with reference to the drawings.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
According to a first aspect of the present invention, a plurality of metal plates having a honeycomb structure in which the first and second metal plates are alternately reversed and laminated to dissipate heat from the heat generating portion, and the metal plates A cooling fan that blows air, each of which has a plurality of lines of cut lines formed on the metal plate , and the portions between the cut lines are alternately pushed out to the front side and the back side, and the front side protruding part row and the back side protruding The sub-rows are alternately provided, and the front-side protruding portion row and the back-side protruding portion row are alternately provided with trapezoidal protruding portions and flat portions, respectively, and provided on the first metal plate. a radiator, characterized in that the flat portions of the protrusions of the front protrusion columns and backside projecting portion array provided on the second metal plate is configured to honeycomb structure by being contacted, metal plate Is a ladder-shaped protrusion whose entire surface area is extruded The heat exchange efficiency can be increased by increasing the contact area with air, that is, the metal plate becomes three-dimensional due to the extruded ladder-shaped protrusion, and the cooling is increased. It has the effect that the wind of the fan can be easily passed to increase the heat exchange efficiency and the mechanical strength can be increased. Moreover, since it is composed of a plurality of metal plates, the amount of heat exchange is increased, the mechanical strength is also increased, and the flat portions of the protruding portions are in contact with each other, so the heat conduction between the metal plates is good. Since it can be manufactured with the same type of press, it can be manufactured at low cost.
[0016]
The invention according to claim 2 of the present invention, in one SL mounting of the radiator claims, the metal plate is characterized in that a copper plate, good heat exchange efficiency since the thermal conductivity is good Moreover, it has the effect | action that a projection part can be easily shape | molded with a press.
[0017]
Invention of Claim 3 of this invention WHEREIN: The heat radiator of Claim 1 or 2 joins a heat pipe to a flat part , and can heat-heat stably and reliably heat conduction. So that they can be joined together.
[0018]
( Premise form 1)
1 is a perspective view of a radiator according to the premise of the present invention, FIG. 2 is a plan view for explaining processing of a copper plate in the radiator, and FIG. 3 is a perspective view of the radiator to which a heat pipe is connected. FIG.
[0019]
As shown in FIG. 1 and FIG. 2, the heat radiator of this premise form is composed of a metal substrate 14 with good thermal conductivity. Here, a copper plate 7 is a main member, and a plurality of rows of intermittent cut lines 8 are formed on the copper plate 7. Is attached to the band portion 9a between the first and second row intermittent cut lines 8a and 8b, and the cut portions 10a- ₁ , 10a- ₂ , 10a- ₃ ,. A plurality of protruding pieces 11a ₋₁ , 11a ₋₂ , 11a ₋₃ . Each of the protruding pieces 11a- ₁ , 11a- ₂ , 11a- _3, ... Has a semi-honeycomb shape, that is, a trapezoidal shape, with the protruding piece direction as an axis. The projecting pieces 11a- ₁ , 11a- ₂ , 11a- _3, ... are formed by pressing. The band portion 9b between the second row of intermittent cut lines 8b and the third row of intermittent cut lines 8c, and the cut portions 10b- ₁ , 10b- ₂ , 10b- _3, ... Extruding to the back side, ladder-shaped protruding pieces 11b- ₁ , 11b- ₂ , 11b- _3, ... are formed on the back side of the copper plate 7 so as to form a line at equal intervals. Further, in the band portion 9c between the third row of intermittent cut lines 8c and the fourth row of intermittent cut lines 8d, trapezoidal protruding pieces 11c _-1 and 11c _-2 similar to the band 9a of the first row are provided. , 11c _-3 ... Are formed on the front side of the copper plate 7 so as to form a line at equal intervals, and the band portion 9d in the fourth row has a trapezoidal protrusion in the same manner as the band 9b in the second row. The pieces 11d ₋₁ , 11d ₋₂ , 11d ₋₃ ... Are formed on the back side of the copper plate 7 so as to form rows at equal intervals. These ladder-shaped projecting pieces are formed in the same manner in the fifth row, the sixth row,.
[0020]
Thus, the heatsink of the premise form consists of the board | substrate 14 formed by the press work of the copper plate 7, The board | substrate 14 is provided with the row | line | column of several ladder-shaped protrusion pieces 11, The protruding pieces 11 in the row have a configuration in which those adjacent to the side thereof protrude alternately to the front side and the back side of the substrate 14.
[0021]
In this configuration, the substrate 14 formed by pressing the copper plate 7 has a larger overall surface area due to the front and back surfaces and side surfaces of the extruded protruding piece, that is, the contact area with air is increased. Heat exchange efficiency can be increased.
[0022]
Further, the substrate 14 is three-dimensionalized by the extruded ladder-shaped projecting piece 11 and can easily pass the air of the cooling fan to increase the heat exchange efficiency and increase the mechanical strength. it can.
[0023]
Furthermore, as shown in FIG. 3, when the heat pipe 13 led out from the MPU 12 is joined to the radiator, a stable joining can be obtained because it can be brought into contact with the flat portion of each ladder-shaped protruding piece row on the substrate 14. . And since the distance from the heat pipe 13 to the edge part of the board | substrate 14 becomes substantially equal, also from this point, heat exchange efficiency improves.
[0024]
Furthermore, since each protruding piece can be formed by pressing a metal substrate such as the copper plate 7, the radiator can be easily and inexpensively manufactured.
[0025]
(Embodiment 1 )
FIG. 4 is a perspective view of the radiator according to Embodiment 1 of the present invention.
[0026]
Radiator of the first embodiment, in which the unit radiator radiator assumptions embodiment as shown in FIG. 4, constituted by superposing two unit heat radiator in which the same type. In addition, when superposing, the lower one is reversed with respect to the upper one. Of course, each substrate 14 of the two unit radiators is provided with a plurality of protruding piece rows in the same manner as in the first embodiment, and the protruding piece 11 is formed in a trapezoidal cross section. The protruding pieces 11 adjacent to each other have a relationship protruding alternately on the front side and the back side of the substrate 14. And the flat part of the protrusion piece 11 in two unit radiators is made to contact. That is, in the two substrates 14 that are reversed, the flat portions of the protruding portions of the one substrate 14 (front side protruding portion row) and the protruding portions of the other protruding piece row (back side protruding portion row) are brought into contact with each other. ing.
[0027]
In the radiator of the first embodiment, the flat portions of the protruding pieces in the two unit radiators stacked can be in close contact with each other to conduct heat, and as a whole, they perform a heat exchange action. . Since the two radiators of the first embodiment are configured to overlap, the heat exchange amount is doubled and the mechanical strength is also increased. Further, the two substrates 14 having the same type and having a plurality of protruding pieces 11 can be manufactured by the same type of press, and therefore, the manufacture is easy and inexpensive.
[0028]
(Embodiment 2 )
FIG. 5 is a perspective view of a radiator according to the second embodiment of the present invention.
[0029]
As shown in FIG. 5, the radiator of the second embodiment is configured by superposing the plurality of the radiators of the first embodiment as unit radiators.
[0030]
Of course, the substrate 14 is provided with a plurality of protruding piece rows, the protruding pieces 11 are formed in a trapezoidal cross section, and the protruding pieces 11 adjacent to the side in the plurality of protruding piece rows are alternately arranged on the front side and the back side of the substrate. It has a projecting relationship, and a hexagonal shape is formed by the upper and lower projecting pieces. And each board | substrate 14 to superimpose with respect to the 1st layer and the 3rd layer, the 2nd layer and the 4th layer turn the front and back, and each protrusion piece in the protrusion piece row | line | column of each overlap | superposed board | substrate 14 flat portion of has a configuration in contact with the Judges.
[0031]
Since the heat radiator of the second embodiment is configured by stacking a plurality of unit heat radiators of the first embodiment, the heat exchange amount is increased and the mechanical strength is increased. Since these are in contact with each other, the heat conduction between the unit radiators is improved. Furthermore, the heat pipe 13 can be stably joined by inserting the heat pipe 13 between the layers. Moreover, if each board | substrate 14 with the some protrusion piece 11 is made into the same type | mold, it will be able to manufacture with the press of the same type | mold, and the manufacture becomes easy.
[0032]
In addition, the heat radiator of this invention may not use a heat pipe.
[0033]
【The invention's effect】
As is clear from the above explanation, according to the present invention, the substrate of the radiator has a large surface area due to the front and back surfaces and side surfaces of the extruded protruding piece, that is, the contact area with air is increased, and therefore the heat is increased. It can be set as a radiator with good exchange efficiency. Further, the substrate becomes three-dimensional by the extruded protruding pieces, and can easily pass the cooling fan to increase the heat exchange efficiency, and the mechanical strength can be increased.
[0034]
Further, each protrusion is formed in ladder shape, since it is formed with a flat portion to the projecting portion, when a plurality of stacked substrates, the flat portion is tightly joined butt out portion that put on each other of the substrate And heat conduction is obtained.
[0035]
Further, when the heat pipe led out from the heat generating part is joined to the radiator, the heat pipe can be brought into contact with the flat portion of each ladder-shaped protruding piece row on the substrate, so that the joining can be performed stably and with good heat conduction.
[0036]
Thus, the present invention improves the heat exchange efficiency of the radiator, increases the mechanical strength, and makes it easier to make a radiator, and the effect is great.
[Brief description of the drawings]
FIG. 1 is a perspective view of a radiator according to the premise of the present invention. FIG. 2 is a plan view for explaining processing of a copper plate in the radiator. FIG. 3 is a perspective view of the radiator to which a heat pipe is connected. 4 is a perspective view of a radiator according to Embodiment 1 of the present invention. FIG. 5 is a perspective view of a radiator according to Embodiment 2 of the present invention. FIG. 6 is a perspective view of a conventional cooling device. Configuration diagram of heat radiation part in cooling device [Explanation of symbols]
7 Copper plate 8 Intermittent cut line 9 Band part 10 Cut part 11 Projection piece 12 MPU
13 Heat pipe 14 Substrate

Claims (3)

A plurality of metal plates having a honeycomb structure in which the first and second metal plates are alternately reversed and laminated to dissipate heat from the heat generating portion ; and a cooling fan that blows air on the metal plates, A plurality of rows of cut lines are formed on each metal plate , and the portions between the cuts of the cut lines are alternately pushed out to the front side and the back side, and the front side protruding portion rows and the back side protruding portion rows are alternately provided. The front-side protruding portion row and the back-side protruding portion row are provided with alternately arranged ladder-like protruding portions and flat portions, respectively, and the front-side protruding portion row provided on the first metal plate and the A radiator having a honeycomb structure in which the flat portions of the protruding portions of the back side protruding portion row provided on the second metal plate are brought into contact with each other. The heat radiator according to claim 1, wherein the metal plate is a copper plate. The heat radiator according to claim 1, wherein a heat pipe is joined to the flat portion.

Images