JP2017038025A - Heat dissipation structure, housing, and portable terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique capable of efficiently dissipating heat from a heating component and enhance the strength of a housing for storing the heating component.SOLUTION: The heat dissipation structure includes: a heat dissipation material 15 being in contact with a heating component 16; and a projecting part 13 formed on a surface of a frame 19 in a polygonal grating shape. The projecting part 13 is in contact with the heat dissipation material 15.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a heat dissipation structure, a housing, and a mobile terminal.

  Recently, various techniques have been disclosed as techniques for cooling a heated object. For example, a technique is disclosed in which a plate-shaped honeycomb core having thermal conductivity is sandwiched between skin materials, and heat from one skin is conducted to the other skin material (see, for example, Patent Document 1). Further, a technique for improving the cooling function inside the casing by disposing a honeycomb-shaped heat dissipating material on the outer surface of the casing is disclosed (for example, see Patent Document 2).

  Further, a technique for providing a flexible sheet between the contact member and the honeycomb structure is disclosed (for example, see Patent Document 3).

Japanese Patent Laid-Open No. 2004-1083 JP 2008-201047 A JP 2003-270180 A

  However, there is a need for a technique that can efficiently radiate heat from a heat-generating component. Furthermore, there is a need for a technique that can further increase the strength of a housing that stores heat-generating components.

  Accordingly, the present invention has been made in view of the above problems, and an object of the present invention is to enable a heat-generating component to dissipate heat more efficiently and to house a heat-generating component. It is in providing the technique which can raise the intensity | strength of more.

  In order to solve the above-described problem, according to one aspect of the present invention, the heat-dissipating material that contacts the heat-generating component, and a protrusion formed in a polygonal lattice shape on the surface of the frame, the protrusion is A heat dissipating structure in contact with the heat dissipating material is provided.

  The frame and the protrusion may form an opening space.

  The polygon may include at least one of a hexagon, a quadrangle, and a triangle.

  The protrusion may be integrally formed with the same member as the frame or a different member.

  The heat dissipation material may include a predetermined heat dissipation material having flexibility.

  The heat dissipation material may include a predetermined heat dissipation material having insulating properties.

  The heat dissipation material may include a predetermined heat dissipation material having a reduced impact.

  The heat dissipation material may be filled in the opening space.

  At least a part of the protruding portion is a linear shape portion extending linearly in a predetermined direction, and the linear shape portion passes through two vertices of one polygonal frame constituting the protruding portion, and Dividing the polygonal frame into two polygonal frames may be performed continuously.

  In addition, according to another aspect of the present invention, it is provided with a heat dissipating material in contact with the heat generating component, and a protrusion formed in a polygonal lattice shape on the surface of the frame, and the protrusion includes the heat dissipating material and the heat dissipating material. A housing that is in contact is also provided.

  As described above, according to the present invention, the heat generating component can be radiated more efficiently, and the strength of the housing for storing the heat generating component can be further increased.

It is an external appearance perspective view of a general terminal device with a cover. It is the top view and side view of a general terminal device with a cover. It is sectional drawing in the AA of the general terminal device with a cover shown in FIG. It is a perspective view of the component mounting apparatus provided with the heat-emitting component among the general terminal devices. It is the top view and side view of a terminal device with a cover concerning a 1st embodiment of the present invention. It is sectional drawing in the BB line shown in FIG. It is a top view of the terminal device with a cover concerning a 2nd embodiment of the present invention. It is sectional drawing in the CC line shown in FIG. It is a top view of the terminal device concerning the 1st modification. It is a top view of the terminal unit concerning the 2nd modification.

  Exemplary embodiments of the present invention will be described below in detail with reference to the accompanying drawings. In the present specification and drawings, components having substantially the same functional configuration are denoted by the same reference numerals, and redundant description is omitted.

  In the present specification and drawings, a plurality of components having substantially the same functional configuration may be distinguished by adding different numerals after the same reference numerals. Further, similar constituent elements of different embodiments are distinguished by attaching different alphabets after the same reference numerals. However, when there is no need to particularly distinguish each of a plurality of constituent elements having substantially the same functional configuration, only the same reference numerals are given.

(General terminal device)
Before describing a terminal device according to an embodiment of the present invention, a general terminal device will be described. FIG. 1 is an external perspective view of a general terminal device with a cover. As shown in FIG. 1, a general terminal device 90 with a cover includes a first cover 21 and a second cover 22, and the first cover 21 and the second cover 22 are provided inside the first cover 21 and the second cover 22. The terminal device 80 (see FIG. 4) is accommodated. The terminal device 80 will be described later.

  FIG. 2 is a top view and a side view of a general terminal device 90 with a cover. As shown in FIG. 2, a general terminal device 90 with a cover includes four fixtures 10, four fixtures 11, a heat dissipation material 15, a heat generating component 16, six fixtures 17, a substrate 18, a frame 19, 1 cover 21 and second cover 22 are provided. The heat dissipating material 15 and the frame 19 constitute a housing of a general terminal device 90 with a cover. 3 is a cross-sectional view taken along line AA of the general terminal device 90 with a cover shown in FIG.

  As shown in FIGS. 2 and 3, the heat generating component 16 is formed on the back surface d (the surface facing the frame 19) of the substrate 18. The substrate 18 is supported by a frame 19 and is fixed to the frame 19 by six fixing members 17. Further, as shown in FIG. 2, the first cover 21 is fixed to the frame 19 by four fixing tools 10, and the second cover 22 is fixed to the first cover 21 by four fixing tools 11. Yes. FIG. 4 is a perspective view of a general terminal device 80.

  Here, in the general terminal device 90 with a cover, as shown in FIG. 3, the heat dissipation material 15 is filled so as to contact the frame 19 and the heat generating component 16. Since the heat radiating material 15 is filled in such a position, the heat radiating material 15 can diffuse the heat generated by the heat generating component 16 toward the frame 19. However, since the area of the contact portion between the frame 19 and the heat dissipation material 15 is not so large, the heat-generating component 16 is not efficiently dissipated.

  Furthermore, since the clearance between the heat dissipation material 15 and the heat generating component 16 becomes less likely as the heat dissipation material 15 becomes more flexible, the heat dissipation efficiency of the heat generating component 16 is improved, while the housing including the frame 19 and the heat dissipation material 15 is improved. The strength of the body is weakened. Therefore, in the embodiment of the present invention, there is a technology that can efficiently dissipate the heat-generating component 16 and naturally cool it, and can further increase the strength of the housing that houses the heat-generating component 16. Mainly explained.

(First embodiment)
Subsequently, a first embodiment of the present invention will be described. The external perspective view of the terminal device with cover 1A according to the first embodiment of the present invention is the same as the external perspective view of the general terminal device with cover 90 shown in FIG. As shown in FIG. 1, the terminal device with cover 1 </ b> A according to the first embodiment of the present invention includes a first cover 21 and a second cover 22, and the first cover 21 and the second cover 22. The terminal device 2 </ b> A (see FIG. 4) is housed inside the cover 22.

  In the following, a communication terminal used in a predetermined field will be described as an example of the terminal device with cover 1A. However, the terminal device 1A with a cover is not limited to a communication terminal used in a predetermined field, and may include a housing that stores a heat-generating component.

  For example, the terminal device with cover 1A may be a mobile terminal (for example, a smartphone, a mobile phone, a wireless communication device, a tablet terminal, or the like). Or the housing | casing which stores a heat-emitting component may be contained in apparatuses other than the terminal device 1A with a cover. For example, the housing that stores the heat-generating component may be included in an air conditioner, or may be included in home appliances (for example, a television device, a liquid crystal monitor, a cooler, a heater, and the like).

  The material of the first cover 21 and the second cover 22 is not particularly limited. For example, the first cover 21 and the second cover 22 may be resinous. Here, an example will be described in which the terminal device 2A is housed in the first cover 21 and the second cover 22, but the terminal device 2A is housed in the first cover 21 and the second cover 22. (For example, it may be exposed).

  FIG. 5 is a top view and a side view of the terminal device with cover 1A according to the first embodiment of the present invention. As shown in FIG. 5, the terminal device with cover 1 </ b> A according to the first embodiment of the present invention includes four fixtures 10, four fixtures 11, a protruding portion 13, a heat dissipation material 15, a heat generating component 16, and six pieces. A fixture 17, a substrate 18, a frame 19, a first cover 21 and a second cover 22 are provided. The protrusion 13, the heat dissipation material 15, and the frame 19 can constitute a casing of the terminal device 1 </ b> A with a cover (terminal device 2 </ b> A). 6 is a cross-sectional view taken along the line AA of the terminal device with cover 1A shown in FIG.

  As shown in FIGS. 5 and 6, the heat generating component 16 is formed on the back surface d (the surface facing the frame 19) of the substrate 18. 5 and 6 show the case where the heat generating component 16 is divided into two as an example, the heat generating component 16 may be divided into any number or may not be divided. Moreover, the specific function which the heat-emitting component 16 has is not specifically limited. As an example, the heat generating component 16 may be various arithmetic devices (for example, a CPU (Central Processing Unit), a DSP (Digital Signal Processing), etc.), but may be any component that generates heat.

  The substrate 18 is supported by a frame 19 and is fixed to the frame 19 by six fixing members 17. For example, the frame 19 may be made of metal (for example, aluminum). This is because the metal has high thermal conductivity, so that the heat generated by the six heat generating components 16 is easily conducted to the outside of the frame 19 through the frame 19. In addition, although the case where the number of the fixing tools 17 is six is shown as an example in FIG. 5, the number of the fixing tools 17 is not particularly limited.

  Further, as shown in FIG. 5, the first cover 21 is fixed to the frame 19 by four fixing tools 10, and the second cover 22 is fixed to the first cover 21 by four fixing tools 11. Yes. In addition, although the case where the number of the fixing tools 10 is four is shown as an example in FIG. 5, the number of the fixing tools 10 is not particularly limited. Similarly, FIG. 5 shows an example in which the number of fixtures 11 is four, but the number of fixtures 11 is not particularly limited. The perspective view of the terminal device 2A is the same as the perspective view of the general terminal device 80 shown in FIG.

  Here, the terminal device 1A with a cover according to the first embodiment of the present invention is formed in a polygonal lattice shape on the surface of the frame 19 (the surface facing the heat generating component 16) as shown in FIG. A protrusion 13 is provided. The heat dissipating material 15 is in contact with each of the heat generating component 16 and the protruding portion 13. In particular, referring to FIG. 6, an opening space is formed by the frame 19 and the protrusion 13, and the tip of the protrusion 13 is in contact with the heat dissipation material 15.

  In the example shown in FIG. 5, the polygons of each lattice constituting the protrusions 13 are hexagons, and the protrusions 13 form a honeycomb structure. However, the polygons of the respective lattices constituting the protruding portion 13 may be squares, triangles, other polygons, or a combination thereof. . For example, the polygon of each lattice constituting the protrusion 13 may include at least one of a hexagon, a quadrangle, and a triangle.

  In the example shown in FIG. 6, the protruding portion 13 is formed integrally with the frame 19 by the same member. However, the protrusion 13 may be formed integrally with the frame 19 by a separate member. That is, the protruding portion 13 may be formed integrally with the frame 19 by the same member or a different member.

  The type of the heat dissipation material 15 is not particularly limited, but the heat dissipation material 15 preferably includes a predetermined heat dissipation material having flexibility. If it does so, it will become possible to reduce the physical impact given to the heat-emitting component 16, and it will become possible to make the clearance gap between the heat-generating components 16 small, and to promote the heat conduction from the heat-generating component 16 to the heat radiating material 15. . Further, the heat dissipation material 15 may include a predetermined heat dissipation member having insulating properties. By doing so, it is possible to reduce the electrical influence on the heat generating component 16. For example, the heat dissipating material 15 may be silicon or rubber having enhanced thermal conductivity.

  As described above, since the heat radiating material 15 is in contact with the protruding portion 13 and the heat generating component 16, the heat generated by the heat generating component 16 can be transmitted from the frame 19 through the heat radiating material 15 and the protruding portion 13. . At this time, since the protrusion 13 has a large surface area, heat can be efficiently radiated from the surface of the protrusion 13. In addition, since the protruding portion 13 is in contact with the heat dissipation material 15 and the frame 19, it is possible to increase the strength of the casing including the frame 19 and the heat dissipation material 15.

(Second Embodiment)
Subsequently, a second embodiment of the present invention will be described. The external perspective view of the terminal device with cover 1B according to the second embodiment of the present invention is the same as the external perspective view of the general terminal device with cover 90 shown in FIG. As shown in FIG. 1, the terminal device with cover 1 </ b> B according to the second embodiment of the present invention includes a first cover 21 and a second cover 22, and the first cover 21 and the second cover 22. The terminal device 2 </ b> B (see FIG. 4) is housed inside the cover 22.

  FIG. 7 is a top view of a terminal device 1B with a cover according to the second embodiment of the present invention. As shown in FIG. 7, the terminal device with cover 1B according to the second embodiment of the present invention has the same configuration as the terminal device with cover 1A according to the first embodiment of the present invention. However, as compared with the terminal device with cover 1A according to the first embodiment of the present invention, the terminal device with cover 1B according to the second embodiment of the present invention has a different range in which the heat dissipation material 15 is filled. ing. Hereinafter, a range in which the heat dissipation material 15 is filled will be described in detail.

  FIG. 8 is a cross-sectional view taken along the line BB of the terminal device 1 </ b> B with cover shown in FIG. 7. The perspective view of the terminal device 2B is the same as the perspective view of the general terminal device 80 shown in FIG. Here, in the first embodiment of the present invention, the heat dissipating material 15 is in contact with the tip of the protruding portion 13 (see FIG. 6), whereas in the second embodiment of the present invention, FIG. Referring to, the heat dissipation material 15 is in contact with the opening space formed by the frame 19 and the protruding portion 13.

  According to such a configuration, similarly to the first embodiment of the present invention, the heat generated by the heat generating component 16 can be diffused from the frame 19 through the heat radiating material 15 and the protruding portion 13. At this time, in the second embodiment of the present invention, the heat radiating material 15 is in contact with the opening space formed by the frame 19 and the projecting portion 13, so that the heat conduction from the projecting portion 13 to the heat radiating material 15 is performed. Is more promoted. Therefore, in the second embodiment of the present invention, heat is radiated more efficiently than in the first embodiment of the present invention, and the cooling rate of the heat generating component 16 is improved. Note that the heat dissipation material 15 does not necessarily have to be completely filled in the opening space, and the heat dissipation efficiency can be improved if the heat dissipation material 15 is in contact with the protruding portion 13 or the frame 19 with a certain area.

(First modification)
Subsequently, a first modification will be described. Such a first modification may be a modification of the first embodiment of the present invention, or may be a modification of the second embodiment of the present invention. That is, the heat dissipation material 15 in the first modification may be in contact with the tip of the protrusion 13 (see FIG. 6), or may be in contact with the opening space formed by the frame 19 and the protrusion 13. (FIG. 8).

  The external perspective view of the terminal device with cover 1C according to the first modification is the same as the external perspective view of the general terminal device with cover 90 shown in FIG. As shown in FIG. 1, the terminal device with cover 1 </ b> C according to the first modification includes a first cover 21 and a second cover 22, and the first cover 21 and the second cover 22. The terminal device 2C (see FIG. 4) is housed inside the.

  FIG. 9 is a top view of the terminal device with cover 1C according to the first modification of the present invention. The terminal device with cover 1C according to the first modification includes the protruding portion 13, but at least a part of the protruding portion 13 is a linear shape portion 131 that extends linearly in a predetermined direction. And the linear shape part 131 passes through the two vertex 132 of the one polygon frame 133 which comprises the protrusion part 13, and divides | segments the said one polygon frame 133 into two polygon frames continuously. Do. The shape of the polygon frame 133 is not limited, but in the example shown in FIG. 9, the polygon frame 133 is a square.

  For example, the predetermined direction in which the linear portion 131 extends linearly may be a direction along the injection direction Dr of the protruding portion 13 (and the frame 19) at the time of manufacture. According to such a configuration, since the direction of the linear portion 131 that constitutes the protruding portion 13 is along the injection direction Dr, defects such as chipping are less likely to occur in the protruding portion 13, and a defective product may be manufactured. Can be reduced. In the example shown in FIG. 9, a truss structure is formed by the entire protrusion 13.

(Second modification)
Subsequently, a second modification will be described. Such a second modification may be a modification of the first embodiment of the present invention, or may be a modification of the second embodiment of the present invention. That is, the heat dissipation material 15 in the second modification may be in contact with the tip of the protrusion 13 (see FIG. 6), or may be in contact with the opening space formed by the frame 19 and the protrusion 13. (FIG. 8).

  The external perspective view of the terminal device with cover 1D according to the second modification is the same as the external perspective view of the general terminal device with cover 90 shown in FIG. As illustrated in FIG. 1, the terminal device with cover 1 </ b> D according to the first modification includes a first cover 21 and a second cover 22, and the first cover 21 and the second cover 22. The terminal device 2D (see FIG. 4) is housed inside the.

  FIG. 10 is a top view of a terminal device 1D with a cover according to a second modification of the present invention. The terminal device with cover 1D according to the second modification includes the protruding portion 13, but at least a part of the protruding portion 13 is a linear shape portion that extends linearly in a predetermined direction. And the linear shape part 134 passes through the two vertex 132 of the one polygon frame 136 which comprises the protrusion part 13, and divides | segments the said one polygon frame 136 into two polygon frames continuously. Do. The shape of the polygon frame 136 is not limited, but in the example shown in FIG. 10, the polygon frame 136 is a hexagon.

  For example, the predetermined direction in which the linearly shaped portion 134 extends linearly may be a direction along the injection direction Dr of the projecting portion 13 (and the frame 19) at the time of manufacture. According to such a configuration, since the direction of the linearly shaped portion 134 constituting the protruding portion 13 is along the injection direction Dr, defects such as chipping are less likely to occur in the protruding portion 13 and a defective product may be manufactured. Can be reduced. In the example shown in FIG. 10, the entire protruding portion 13 is formed by the kagome lattice frame and the linear shape portion 134. Further, the linear shape portion 134 does not necessarily have to pass through all the vertices. For example, the linear shape portion 134 may not be provided in a portion where the injection is easy.

  As described above, according to the embodiment of the present invention, the heat dissipating material 15 in contact with the heat generating component 16 and the protrusions 13 formed in a polygonal lattice shape on the surface of the frame 19 are provided. The part 13 is provided with a heat dissipation structure in contact with the heat dissipation material 15. According to such a configuration, the heat generating component 16 can be radiated more efficiently and can be naturally cooled by air cooling or the like by the frame 19 or the housing, and the strength of the housing that houses the heat generating component 16 can be further increased. Is possible. It should be noted that the height of the protrusion 13 relative to the frame 19 is not necessarily the same as that in each drawing, and may be high enough to obtain a required strength.

  The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to such examples. It is obvious that a person having ordinary knowledge in the technical field to which the present invention pertains can come up with various changes or modifications within the scope of the technical idea described in the claims. Of course, it is understood that these also belong to the technical scope of the present invention.

  For example, the heat generating component 16 for controlling the entire operation of the terminal device 2 may be configured by dedicated hardware, or a CPU built in the terminal device 2 expands a program stored in the ROM into the RAM. It may be realized by executing. In addition to providing such a program, a storage medium storing such a program may also be provided.

1A to 1D Terminal device with cover 2A to 2D Terminal device 10 Fixing tool 11 Fixing tool 13 Protruding part 131 Linear shape part 132 Vertex 134 Linear shape part 133 Polygonal frame 136 Polygonal frame 15 Heat radiation material 16 Heating component 17 Fixing tool 18 Substrate 19 frame 21 first cover 22 second cover 80 terminal device 90 terminal device with cover Dr injection direction d back surface

Claims (11)

A heat dissipating material in contact with the heat generating component;
A protrusion formed in a polygonal lattice shape on the surface of the frame,
The protrusion is in contact with the heat dissipation material;
Heat dissipation structure. The frame and the protrusion form an open space,
The heat dissipation structure according to claim 1. The polygon includes at least one of a hexagon, a square, and a triangle.
The heat dissipation structure according to claim 1. The projecting portion is integrally formed of the same member or a different member with the frame,
The heat dissipation structure according to claim 1. The heat dissipation material includes a predetermined heat dissipation material having flexibility,
The heat dissipation structure according to claim 1. The heat dissipation material includes a predetermined heat dissipation material having insulating properties.
The heat dissipation structure according to claim 1. The heat dissipation material includes a predetermined heat dissipation material having a reduced impact,
The heat dissipation structure according to claim 1. The heat dissipating material is filled in the opening space.
The heat dissipation structure according to claim 2. At least a part of the protruding portion is a linear shape portion extending linearly in a predetermined direction,
The linearly-shaped portion continuously passes through two vertices of one polygonal frame constituting the protruding portion, and continuously divides the one polygonal frame into two polygonal frames.
The heat dissipation structure according to claim 1. A heat dissipating material in contact with the heat generating component;
A protrusion formed in a polygonal lattice shape on the surface of the frame,
The protrusion is in contact with the heat dissipation material;
Enclosure. The portable terminal provided with the heat dissipation structure of any one of Claims 1-9.

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