JP2020173662A - Portable information device with cover - Google Patents

Abstract

To provide a portable information device with a cover, capable of effectively radiating a heat generated from the portable information device even in a state where a cover member is mounted.SOLUTION: A portable information device 10 with a cover, comprises: a portable information device 12 having a housing 14; and a cover member 11 that is mounted to an outer wall 14b of the housing 14 and covers at least a part of the outer wall 14b. The portable information device 12 includes: a heat generation body provided inside of the housing 14; and a heat radiation part 30 that radiates a heat generated from the heat generation body to an outside of the housing 14. The cover member 11 includes: a heat conduction member 36 in which its inner surface 36a is provided so as to be faced to the heat radiation part 30; and a front surface member 38 that forms an outer front surface of the portable information device 10 with the cover by covering an outer surface 36b of the heat conduction member 36.SELECTED DRAWING: Figure 3

Description

The present invention relates to a portable information device with a cover including a portable information device and a cover member.

It is necessary to avoid damage or damage during carrying of portable information devices such as notebook personal computers (notebook PCs), tablet personal computers (tablet PCs) and smartphones. There is also a demand for portable information devices to be used by users with their favorite appearance designs. Therefore, a cover member that covers the outer wall of the housing may be attached for protection or decoration of the portable information device. In Patent Document 1, the applicant proposes a cover member corresponding to a foldable tablet PC.

Japanese Unexamined Patent Publication No. 2018-105961

In the cover member as described above, artificial leather, cloth or the like is used for the outermost layer in consideration of its design, tactile sensation and the like. Therefore, the cover member using this kind of material has a low thermal conductivity and limits heat dissipation from the housing of the portable information device. As a result, in the portable information device, there is a concern that the inside of the housing becomes hot and the performance such as processing speed deteriorates.

The present invention has been made in consideration of the above-mentioned problems of the prior art, and is portable with a cover capable of efficiently dissipating heat generated from a portable information device even when the cover member is attached. The purpose is to provide information equipment.

The portable information device with a cover according to the first aspect of the present invention is a portable information device with a cover, which is attached to a portable information device having a housing and an outer wall of the housing, and at least one of the outer walls. The portable information device includes a cover member that covers the portion, and the portable information device includes a heating element provided inside the housing and a heat radiating portion that releases heat generated from the heating element to the outside of the housing. The cover member forms the outer surface of the portable information device with a cover by covering the heat conductive member provided so that the inner surface thereof faces the heat radiating portion and the outer surface of the heat conductive member. It has a surface material to be used.

According to such a configuration, the appearance design of the portable information device can be enhanced by the cover member. Moreover, the portable information device with a cover can absorb and diffuse the heat released from the heat radiating portion of the portable information device by the heat conductive member of the cover member facing the heat radiation portion. Therefore, the portable information device with a cover can efficiently dissipate the heat generated from the portable information device even when the cover member is attached. As a result, the portable information device can suppress the temperature inside the housing from becoming high, and can maintain high performance.

The heat conductive member may be made of graphite, aluminum, or copper, and the surface material may be made of a material having a lower thermal conductivity than graphite. Then, the cover member can perform heat diffusion with high heat conduction performance by the heat conduction member made of graphite or the like. Further, since the surface material directly touched by the user is made of a material having low thermal conductivity, it is possible to prevent the portion touched by the user from becoming hot.

The cover member may be fixed to the housing by a screw penetrating the outer wall from the inside of the housing. Then, the cover member is more firmly fixed to the housing, and the heat from the housing can be more reliably absorbed by the heat conductive member.

The heat radiating portion has a heat diffusing member that absorbs and diffuses the heat of the heating element, and an opening formed at a position overlapping the heat diffusing member on the outer wall. It may be configured so as to face the opening. Then, the heat radiating unit can efficiently dissipate the heat from the heating element diffused by the heat diffusing member to the outside through the opening.

The heat radiating portion has a heat diffusing member that absorbs and diffuses the heat of the heating element, and an opening formed at a position overlapping the heat diffusing member on the outer wall. The portion may be inserted into the opening and exposed to the outside of the housing, and the heat conductive member may be arranged so as to face the heat diffusion member exposed from the opening. Then, the heat dissipation efficiency due to the radiation from the heat dissipation unit is further improved.

The heat diffusion member has a plate portion thermally connected to the heating element and a fin portion protruding from the plate portion, and the fin portion is inserted into the opening to form a heat conductive member. It may be a face-to-face configuration. Then, the surface area of the heat diffusion member is increased, and the heat dissipation efficiency is further improved.

The heat radiating portion has a heat diffusion member that absorbs and diffuses the heat of the heating element, the heat diffusion member constitutes a part or all of the outer wall of the housing, and the heat conduction member is , The configuration may be arranged so as to face the heat diffusion member. Then, by using a part of the housing as a heat diffusion member, the heat radiating unit can secure high heat radiating performance while reducing the number of parts and the space occupied by the parts.

The heat diffusion member constitutes a part of the outer wall of the housing, and the heat diffusion member may be composed of a heat transport member in which a working fluid is sealed.

A heat transport member in which a working fluid is sealed may be interposed between the heating element and the heat diffusion member.

According to the above aspect of the present invention, the heat generated from the portable information device can be efficiently dissipated even when the cover member is attached.

FIG. 1 is a perspective view of a portable information device with a cover according to the first embodiment in a usage mode. FIG. 2 is a side view of the portable information device with a cover shown in FIG. 1 in a stored form. FIG. 3 is a schematic cross-sectional view taken along the line III-III in FIG. FIG. 4 is a schematic bottom view in which a part of the back surface of one housing is enlarged. FIG. 5 is a schematic bottom view of a part of the back surface of the housing having the opening according to the modified example. FIG. 6 is a schematic cross-sectional view taken along the VI-VI line in FIG. FIG. 7 is a schematic cross-sectional view of one housing and the first cover portion of the portable information device with a cover according to the second embodiment. FIG. 8 is a schematic bottom view in which a part of the back surface of the housing shown in FIG. 7 is enlarged. FIG. 9 is a schematic cross-sectional view of one housing and the first cover portion of the portable information device with a cover according to the third embodiment. FIG. 10 is a side view of a portable information device with a cover in which the cover member is attached to the portable information device according to the modified example. FIG. 11 is a side view of a portable information device with a cover in which a cover member according to a modified example is attached to the portable information device shown in FIG.

Hereinafter, a suitable embodiment of the portable information device with a cover according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view of the portable information device 10 with a cover according to the first embodiment in a usage mode. FIG. 2 is a side view of the portable information device 10 with a cover shown in FIG. 1 in a stored form.

As shown in FIGS. 1 and 2, the portable information device 10 with a cover includes a cover member 11 and a portable information device 12. The cover member 11 has a protective function of covering the outer surface of the portable information device 12 to protect it, and a decorative function of decorating the outer surface of the portable information device 12 to enhance the appearance design. As the portable information device 12 to which the cover member 11 is attached, a foldable tablet PC is exemplified in the present embodiment. The portable information device 12 may be a notebook PC, a single plate-shaped tablet PC, a smartphone, or the like.

The portable information device 12 includes a pair of housings 14 and 15 and a display 16.

The housings 14 and 15 are arranged adjacent to each other with their edges abutting each other, and are foldably connected via a hinge 18. One housing 14 accommodates electronic components such as a board 20 on which a CPU (Central Processing Unit) 20a is mounted and a power supply circuit (not shown) (see FIG. 3). The battery device 22 and other electronic components are housed in the other housing 15 (see FIG. 6). The CPU 20a is the largest heating element among the electronic components mounted on the portable information device 12. The power supply circuit is a heating element next to the CPU 20a. The battery device 22 generates less heat than the CPU 20a and the power supply circuit. Therefore, in the portable information device 12, the amount of heat generated differs between the left and right housings 14 and 15, and one housing 14 has a higher temperature than the other housing 15.

The display 16 is, for example, a touch panel type liquid crystal display. The display 16 has a structure that can be folded together when the housings 14 and 15 are folded, and opens and closes as the housings 14 and 15 are opened and closed. The display 16 is, for example, a flexible display such as an organic EL (Electro Luminescence) having a highly flexible paper structure.

Hereinafter, the portable information device 10 with a cover will be described with reference to the arrangement direction of the housings 14 and 15 as the X direction and the direction along the adjacent edges of the housings 14 and 15 connected by the hinge 18 as the Y direction.

As shown in FIGS. 1 and 2, the cover member 11 has a usage pattern (see FIG. 1) that is opened in a flat plate shape and a portable information device 12 that is folded inward as the portable information device 12 opens and closes. The posture changes to the storage form (see FIG. 2) in which the tablet is stored. The cover member 11 includes a first cover portion 24, a second cover portion 25, and a connecting portion 26.

The first cover portion 24 is a portion that covers the back surface 14a of one housing 14. The first cover portion 24 has an outer shape capable of covering substantially the entire back surface 14a. The second cover portion 25 is a portion that covers the back surface 15a of the other housing 15. The second cover portion 25 has an outer shape capable of covering substantially the entire back surface 15a. The connecting portion 26 is foldably connected between the first cover portion 24 and the second cover portion 25. One edge of the connecting portion 26 is foldably connected to the first cover portion 24 via the first fold line 26a in the X direction, and the other edge portion is foldably connected to the second cover portion 25 via the second fold line 26b. It is connected so that it can be folded. The folding lines 26a and 26b extend in the Y direction. As a result, the connecting portion 26 functions as a flexible hinge that foldably connects between the first cover portion 24 and the second cover portion 25.

FIG. 3 is a schematic cross-sectional view taken along the line III-III in FIG. FIG. 4 is a schematic bottom view in which a part of the back surface 14a of one housing 14 is enlarged.

As shown in FIGS. 3 and 4, one housing 14 of the portable information device 12 has a substrate 20, a CPU 20a, and a heat radiating unit 30. The substrate 20 and the CPU 20a are housed inside the housing 14. The heat radiating unit 30 releases heat generated from a heating element such as the CPU 20a to the outside of the housing 14. The heat radiating unit 30 has a heat diffusion member 32 and an opening 34.

The heat diffusion member 32 is a plate made of a metal having high thermal conductivity such as aluminum or copper. The heat diffusion member 32 is thermally connected to the CPU 20a. The heat diffusion member 32 absorbs and diffuses the heat generated by the CPU 20a. The heat diffusion member 32 is provided so as to be in direct contact with the CPU 20a, or is thermally connected to the CPU 20a via a member having high thermal conductivity and high adhesion such as a thermal rubber. The heat diffusion member 32 may be provided together with the CPU 20a so as to be able to absorb heat from another heating element, for example, a power supply circuit. The heat diffusion member 32 is arranged in contact with or close to the inner surface of the outer wall 14b forming the back surface 14a of the housing 14.

The opening 34 is a through hole formed in the outer wall 14b of the housing 14. The opening 34 is a window for radiating the heat diffused by the heat diffusion member 32 to the outside of the housing 14. As shown in FIGS. 3 and 4, the opening 34 is formed at a position where it overlaps with a heating element such as a CPU 20a and a heat diffusion member 32. The opening 34 has an outer shape capable of covering the heat diffusion member 32 in a plan view. The opening 34 of the present embodiment has a configuration in which a plurality of slits 34a are arranged in parallel. The slits 34a extend in the X direction, for example, and are arranged in parallel in the Y direction. As shown in FIG. 5, the opening 34 may have, for example, a configuration in which a plurality of holes 34b having a honeycomb structure are arranged in parallel. The opening 34 may be a hole having a truss structure or a mesh structure (not shown).

The opening 34 has a slit structure, a honeycomb structure, or the like. Therefore, if the cover member 11 is detachable, the portable information device 12 can prevent the heat diffusion member 32 from being exposed to the back surface 14a with the cover member 11 removed. When the cover member 11 is not removable, the opening 34 may be formed by one large hole that covers the heat diffusion member 32 in a plan view.

As shown in FIG. 3, the first cover portion 24 has a heat conductive member 36 and a surface material 38.

The heat conductive member 36 is a member that absorbs and diffuses the heat radiated from the heat diffusion member 32 and passed through the opening 34. The heat conductive member 36 is, for example, a graphite sheet. The heat conductive member 36 may be an aluminum foil, a copper foil, or the like. The heat conductive member 36 is housed in the concave portion 38a formed in the surface material 38. The heat conductive member 36 is provided so that the inner surface 36a faces the heat radiating portion 30 (opening 34). The surface of the heat conductive member 36 may be covered with a coating such as resin in order to prevent graphite powder from spilling.

The surface material 38 is a member that covers the outer surface 36b and the outer peripheral edge of the heat conductive member 36. The surface material 38 forms the outermost layer of the cover member 11, that is, the outer surface of the portable information device 10 with a cover. The surface material 38 is formed of, for example, cloth, non-woven fabric, leather, artificial leather, rubber, silicone rubber, or the like. The surface material 38 is made of a material having a lower thermal conductivity than the heat conductive member 36. Therefore, the user who is in contact with the surface material 38 is prevented from being uncomfortable due to the heat of the heat diffused by the heat conductive member 36. In the surface material 38, the heat conductive member 36 is housed in the concave portion 38a formed on the inner surface side.

As shown in FIG. 3, the first cover portion 24 is fixed to the housing 14 using screws 42. The screw 42 penetrates the outer wall 14b from the inside of the housing 14. A boss portion 44 having a female screw 44a formed is provided on the inner surface of the first cover portion 24. The screw 42 is fastened to the female screw 44a, whereby the first cover portion 24 is integrally fixed to the housing 14. As a result, the first cover portion 24 and the housing 14 are fixed to each other, and the graphite forming the heat conductive member 36 does not rub against the housing 14 to cause powder spills or the like.

FIG. 6 is a schematic cross-sectional view taken along the VI-VI line in FIG. As shown in FIG. 6, the second cover portion 25 has a heat conductive member 36, a surface material 38, and an inner surface material 40.

The heat conductive member 36 extends from the first cover portion 24 to the second cover portion 25 via the connecting portion 26 (see FIG. 2). The heat conductive member 36 of the second cover portion 25 is a portion that diffuses the heat absorbed by the first cover portion 24. The heat conductive member 36 may be provided only on the first cover portion 24 and may not be provided on the second cover portion 25 and the connecting portion 26. However, if the heat conductive member 36 is installed up to the second cover portion 25, the heat diffusion area is expanded, so that the cooling performance of the portable information device 12 is improved.

The surface material 38 extends from the first cover portion 24 to the second cover portion 25 via the connecting portion 26. The inner surface material 40 closes the concave portion 38a of the surface material 38. As a result, the inner surface material 40 prevents the heat conductive member 36 from being exposed to the inner surface of the second cover portion 25. Like the surface material 38, the inner surface material 40 is made of, for example, cloth, non-woven fabric, leather, artificial leather, or the like. The inner surface material 40 may be integrally formed with the surface material 38, and in that case, the concave portion 38a may be formed in a bag shape.

As shown in FIG. 6, the mounting structure of the second cover portion 25 to the housing 15 is composed of the pin 46 and the groove portion 48. The pin 46 is projected from the back surface 15a of the housing 15, for example. The groove portion 48 is formed on the inner surface of the second cover portion 25 and extends in the X direction. The tip head 46a of the pin 46 is slidably engaged with the groove 48. As a result, the second cover portion 25 is slidably supported in the X direction with respect to the housing 15. The mounting structure of the second cover portion 25 to the housing 15 may be other than the structure using the pin 46 and the groove portion 48.

As described above, the portable information device 12 of the present embodiment has a folding structure. Therefore, the cover member 11 provided on the outer surfaces of the housings 14 and 15 receives a compressive force or a tensile force due to the inner ring difference when the hinge 18 rotates. Therefore, in the cover member 11, for example, the first cover portion 24 is immovably fixed to the high temperature side housing 14, and the second cover portion 25 moves in the X direction to the low temperature side housing 15. It is supported as much as possible. As a result, the cover member 11 can surely absorb the heat of the housing 14 by the first cover portion 24, and can smoothly follow the inner ring difference at the time of folding between the housings 14 and 15, resulting in unintentional dropout. It is possible to suppress the occurrence of peeling. The cover member 11 may be detachably attached to the portable information device 12. In this case, the cover member 11 is attached to the back surfaces 14a and 15b of the portable information device 12 by, for example, a magnet or a hook (not shown).

As described above, in the portable information device 10 with a cover according to the present embodiment, the portable information device 12 houses a heating element (for example, CPU 20a) provided inside the housing 14 and heat generated from the CPU 20a. It has a heat radiating portion 30 that emits heat to the outside of the body 14. Further, the cover member 11 covers the outer surface of the portable information device 10 with a cover by covering the heat conductive member 36 provided so that the inner surface 36a of the cover member 11 faces the heat radiating portion 30 and the outer surface 36b of the heat conductive member 36. It has a surface material 38 to be formed.

As described above, the portable information device 10 with a cover can enhance the appearance design of the portable information device 12 by using, for example, artificial leather as the surface material 38. Moreover, the portable information device 10 with a cover can absorb and diffuse the heat released from the heat radiating section 30 of the portable information device 12 by the heat conductive member 36 of the cover member 11 facing the heat radiation unit 30. Therefore, the portable information device 10 with a cover can efficiently dissipate the heat generated from the portable information device 12 even when the cover member 11 is attached. As a result, the portable information device 12 can suppress the inside of the housing 14 from becoming hot, and can maintain high performance.

In the cover member 11, the heat conductive member 36 is made of graphite, and the surface material 38 is made of a material having a lower thermal conductivity than graphite, for example, artificial leather. Therefore, the cover member 11 can perform heat diffusion with high heat conduction performance by the heat conduction member 36 made of graphite. Further, since the surface material 38 that the user directly touches is made of a material having a low thermal conductivity, it is possible to prevent the portion touched by the user from becoming hot. At this time, if the surface material 38 is formed of, for example, artificial leather, high design and high quality tactile sensation can be obtained. In the portable information device 10 with a cover, the heat conductive member 36 is provided from the first cover portion 24 to the second cover portion 25. Therefore, the cover member 11 is maintained at a uniform temperature as a whole, and it is possible to prevent the first cover portion 24 located on the high temperature housing 14 side from becoming locally hot and causing discomfort to the user.

The cover member 11 can absorb and diffuse the heat from the heat radiating portion 30 by the heat conductive member 36. Therefore, for example, it is not necessary to provide a gap or the like for cooling the housing 14 by natural convection between the inner surface of the cover member 11 and the back surface 14a of the housing 14. As a result, the portable information device 10 with a cover is thinned as a whole. In addition, in FIG. 3, in order to ensure the legibility of the drawing, a slight gap is shown between the heat conductive member 36 and the back surface 14a, but this gap may not be provided. However, for example, depending on the mounting state of the cover member 11, a gap as shown in FIG. 3 may be formed between the heat conductive member 36 and the back surface 14a. That is, in the portable information device 10 with a cover of the present embodiment, the heat conductive member 36 may or may not be in contact with the heat radiating portion 30, and the same applies to other configuration examples described later. ..

The cover member 11 is fixed to the housing 14 on which the CPU 20a, which is a heating element, is mounted by screws 42. As a result, the cover member 11 is firmly fixed by the housing 14, so that the heat from the housing 14 can be more reliably absorbed by the heat conductive member 36.

FIG. 7 is a schematic cross-sectional view of one housing 14 and the first cover portion 24 of the portable information device 10A with a cover according to the second embodiment. FIG. 8 is a schematic bottom view in which a part of the back surface 14a of the housing 14 shown in FIG. 7 is enlarged. In the covered portable information device 10A according to the second embodiment, the same reference numerals are given to elements that have the same or similar functions and effects as the covered portable information device 10 according to the first embodiment. However, detailed description thereof will be omitted, and the same applies to the portable information device 10B with a cover according to the third embodiment described later.

As shown in FIGS. 7 and 8, the covered portable information device 10A includes a heat radiating section 50 having a configuration different from that of the heat radiating section 30 of the covered portable information device 10. The heat radiating unit 50 has a heat diffusion member 52 and an opening 54.

The heat diffusion member 52 is made of a metal having high thermal conductivity such as aluminum or copper. The heat diffusion member 52 has a plate portion 52a and a fin portion 52b. The plate portion 52a has the same structure, function, and mounting structure as the heat diffusion member 32, and is thermally connected to the CPU 20a. The fin portion 52b is a convex portion provided so as to project from the lower surface of the plate portion 52a, and a plurality of fin portions 52b are arranged in parallel. The fin portions 52b extend in the Y direction, for example, and are arranged in parallel in the X direction.

The opening 54 is a through hole formed in the outer wall 14b of the housing 14. The opening 34 is a window for radiating the heat diffused by the heat diffusion member 52 to the outside of the housing 14. As shown in FIGS. 7 and 8, the fin portion 52b of the heat diffusion member 52 is inserted into the opening 54. As a result, in the heat dissipation portion 50, the heat diffusion member 52 whose surface area is expanded by the fin portion 52b faces the heat conduction member 36 of the cover member 11.

Therefore, in the portable information device 10A with a cover, the heat radiating portion 50 directly faces the outside of the housing 14 through the opening 54. Therefore, the heat dissipation efficiency due to the radiation from the heat dissipation unit 50 is further improved. Moreover, the heat diffusion member 52 of the heat radiating portion 50 is provided with fin portions 52b formed of a plurality of convex portions on the plate portion 52a. Therefore, the heat dissipation efficiency of the heat diffusion member 52 is further improved by increasing the surface area thereof. As a result, the heat exchange efficiency between the heat diffusion member 52 and the heat conduction member 36 is further improved. The heat diffusion member 52 may have a structure in which the fin portion 52b is not provided and the plate portion 52a is inserted into the opening 54. In the portable information device 10A with a cover, since the heat diffusion member 52 exposed from the opening 54 is covered with the cover member 11, the user does not directly touch the heat diffusion member 52. Therefore, it is preferable that the cover member 11 of the portable information device 10A with a cover is not a structure that can be easily attached and detached by the user, but a structure that is substantially non-detachable using, for example, a screw 42.

FIG. 9 is a schematic cross-sectional view of one housing 14 and the first cover portion 24 of the portable information device 10B with a cover according to the third embodiment. As shown in FIG. 9, the covered portable information device 10B includes a heat radiating section 56 having a configuration different from that of the heat radiating section 30 of the covered portable information device 10. The heat radiating unit 56 has a heat diffusion member 58.

The heat diffusion member 58 forms a part of the outer wall 14b of the housing 14. The heat diffusion member 58 is made of a metal having high thermal conductivity such as aluminum or copper. The heat diffusion member 58 is thermally connected to the CPU 20a. The outer wall 14b is made of a metal such as magnesium or a resin. The heat diffusion member 58 is fitted and fixed to an opening formed in a part of the outer wall 14b. When the outer wall 14b is made of a metal having high thermal conductivity such as aluminum, the entire outer wall 14b may be used as it is as the heat diffusion member 58. As a result, in the heat radiating portion 56, the heat diffusion member 58 faces the heat conduction member 36 of the cover member 11.

In the case of this embodiment, the heat transport member 59 is interposed between the CPU 20a and the heat diffusion member 58. The heat transport member 59 is, for example, a heat pipe, a vapor chamber, or the like, and has a configuration in which a working fluid is sealed in a closed pipeline. As a result, heat is efficiently transported by the heat transport member 59 even when the heat diffusion member 58 formed on a part of the outer wall 14b and the heating element such as the CPU 20a are separated from each other. The heat transport member 59 may be omitted. In that case, the heating element such as the CPU 20a and the heat diffusion member 58 may be brought into direct or indirect thermal contact with each other.

The heat transport member 59 may be used for the heat dissipation units 30 and 50 described above. For example, in the heat radiating unit 30 shown in FIG. 3, a heat transport member 59 may be interposed between the CPU 20a and the heat diffusion member 32. Further, for example, in the heat radiating portion 50 shown in FIG. 7, it is preferable that the heat transport member 59 is interposed between the CPU 20a and the plate portion 52a.

Therefore, in the portable information device 10B with a cover, the heat radiating unit 56 has a heat diffusion member 58 that constitutes a part or all of the outer wall 14b of the housing 14. That is, by using a part of the housing 14 as the heat diffusion member 58, the heat radiating unit 56 can secure high heat radiating performance while reducing the number of parts and the space occupied by the parts. Even in the portable information device 10B with a cover, since the heat diffusion member 58 exposed on the outer surface of the housing 14 is covered with the cover member 11, the user does not directly touch the heat diffusion member 58. Therefore, it is preferable that the cover member 11 of the portable information device 10C with a cover also has a substantially non-detachable configuration using, for example, a screw 42. When the heat diffusion member 58 constitutes only a part of the outer wall 14b of the housing 14, it may be composed of a heat transport member in which a working fluid is sealed in a closed pipe such as a heat pipe or a vapor chamber. .. In this case, the heat transport member 59 described above may be used as it is as a part of the outer wall 14b.

FIG. 10 is a side view of the portable information device 10C with a cover in which the cover member 11 is attached to the portable information device 12A according to the modified example in a usage form.

As shown in FIG. 10, the portable information device 12A is a general tablet PC or smartphone that does not have a foldable structure. The cover member 11 is mounted so that the first cover portion 24 covers the back surface 60a of the housing 60 of the portable information device 12A. The second cover portion 25 and the connecting portion 26 are in a state of projecting to the side of the housing 60 in the usage mode shown in FIG. The cover member 11 has a storage form in which the portable information device 12A is included inside by folding the second cover portion 25 via the connecting portion 26 to cover the display 16.

Therefore, even in the portable information device 10C with a cover, the heat of the heating element such as the CPU 20a radiated by the heat radiating unit 30 (50, 56) can be absorbed and diffused by the heat conductive member 36 of the cover member 11. ..

FIG. 11 is a side view of the portable information device 10D with a cover in which the cover member 11A according to the modified example is attached to the portable information device 12A shown in FIG.

As shown in FIG. 11, the cover member 11A is composed of only the first cover portion 24 of the cover member 11 described above. The cover member 11A is attached so as to cover the back surface 60a of the housing 60 of the portable information device 12A. Therefore, even in the portable information device 10D with a cover, the heat of the heating element such as the CPU 20a radiated by the heat radiating unit 30 (50, 56) can be absorbed and diffused by the heat conductive member 36 of the cover member 11A. ..

It should be noted that the present invention is not limited to the above-described embodiment, and of course, it can be freely changed without departing from the gist of the present invention.

In the above, the tablet type PC and the smartphone are illustrated as the portable information devices 12 and 12A, but the portable information device may be a notebook type PC or the like. When the cover member 11 is attached to a notebook PC, the first cover portion 24 is attached to the back surface of the main body housing provided with the keyboard device and the CPU, and the second cover portion 25 is attached to the back surface of the display housing provided with the display. It is good to attach it to.

10,10A-10D Portable information device with cover 11,11A Cover member 12,12A Portable information device 14,15,60 Housing 14a, 15a, 60a Back surface 14b Outer wall 16 Display 20a CPU
24 1st cover 25 2nd cover 26 Connecting part 30, 50, 56 Heat dissipation part 32, 52, 58 Heat diffusion member 34, 54 Opening 36 Heat conductive member 38 Surface material 40 Inner surface material 42 Screw 52a Plate part 52b Fin part 59 Heat transport member

Claims (9)

A portable information device with a cover
A portable information device with a housing and
A cover member that is attached to the outer wall of the housing and covers at least a part of the outer wall.
With
The portable information device is
A heating element provided inside the housing and
It has a heat radiating portion that discharges heat generated from the heating element to the outside of the housing.
The cover member is
A heat conductive member whose inner surface is provided so as to face the heat radiating portion,
A portable information device with a cover, which comprises a surface material that forms the outer surface of the portable information device with a cover by covering the outer surface of the heat conductive member. The portable information device with a cover according to claim 1.
The heat conductive member is made of graphite, aluminum, or copper.
A portable information device with a cover, wherein the surface material is made of a material having a thermal conductivity lower than that of graphite, aluminum, or copper. A portable information device with a cover according to claim 1 or 2.
A portable information device with a cover, wherein the cover member is fixed to the housing by a screw penetrating the outer wall from the inside of the housing. The portable information device with a cover according to any one of claims 1 to 3.
The heat radiating part
A heat diffusion member that absorbs and diffuses the heat of the heating element,
It has an opening formed at a position overlapping the heat diffusing member on the outer wall.
A portable information device with a cover, wherein the heat conductive member is arranged so as to face the opening. The portable information device with a cover according to any one of claims 1 to 3.
The heat radiating part
A heat diffusion member that absorbs and diffuses the heat of the heating element,
It has an opening formed at a position overlapping the heat diffusing member on the outer wall.
A part of the heat diffusion member is inserted into the opening and exposed to the outside of the housing.
A portable information device with a cover, wherein the heat conductive member is arranged so as to face the heat diffusion member exposed from the opening. The portable information device with a cover according to claim 5.
The heat diffusion member is
A plate portion that is thermally connected to the heating element and
It has a fin portion protruding from the plate portion, and has
A portable information device with a cover, wherein the fin portion is inserted into the opening and faces the heat conductive member. The portable information device with a cover according to any one of claims 1 to 3.
The heat radiating portion has a heat diffusion member that absorbs and diffuses the heat of the heating element.
The heat diffusion member constitutes a part or all of the outer wall of the housing.
A portable information device with a cover, wherein the heat conductive member is arranged so as to face the heat diffusion member. The portable information device with a cover according to claim 7.
The heat diffusion member constitutes a part of the outer wall of the housing.
The heat diffusion member is a portable information device with a cover, which is a heat transport member in which a working fluid is sealed. The portable information device with a cover according to any one of claims 4 to 7.
A portable information device with a cover, characterized in that a heat transport member in which a working fluid is sealed is interposed between the heating element and the heat diffusion member.

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