JP4978521B2

JP4978521B2 - Mobile device

Info

Publication number: JP4978521B2
Application number: JP2008066440A
Authority: JP
Inventors: 裕一森川
Original assignee: Fujitsu Toshiba Mobile Communication Ltd
Current assignee: Fujitsu Mobile Communications Ltd
Priority date: 2008-03-14
Filing date: 2008-03-14
Publication date: 2012-07-18
Anticipated expiration: 2028-03-14
Also published as: JP2009224507A

Description

本発明は、筐体内部の電子部品から発生した熱を効率よく放熱する携帯端末に関する。 The present invention relates to a portable terminal that efficiently dissipates heat generated from electronic components inside a casing.

携帯電話機やＰＤＡ（Personal Digital Assistant）などの携帯型の電子機器（以下、携帯端末という）は、筐体の内部に種々の電子回路モジュールが配設される。これらの電子回路モジュールには、動作に伴い発熱するもの（発熱部品）が含まれることが多い。 2. Description of the Related Art A portable electronic device (hereinafter referred to as a portable terminal) such as a mobile phone or a PDA (Personal Digital Assistant) has various electronic circuit modules disposed inside a casing. These electronic circuit modules often include components that generate heat during operation (heating components).

携帯端末のうち、特に小型の携帯端末は、筐体内部にこれらの電子回路モジュールをはじめとする必要最小限の各種部材が詰め込まれている。このため、筐体内部に放熱用のファンなどを設置する空間的な余裕がない。したがって、小型の携帯端末では、発熱部品から発生した熱を筐体外部に放熱することが難しい。 Among portable terminals, particularly small portable terminals are packed with a minimum number of various members including these electronic circuit modules inside a casing. For this reason, there is no room for installing a heat dissipation fan or the like inside the housing. Therefore, in a small portable terminal, it is difficult to dissipate the heat generated from the heat generating component to the outside of the housing.

従来、この種の筐体内部の熱を効率よく放熱する技術に、特開２０００−３１６７４号公報（特許文献１）に開示された技術がある。 Conventionally, there is a technique disclosed in Japanese Patent Laid-Open No. 2000-31674 (Patent Document 1) as a technique for efficiently radiating heat inside this type of housing.

この特許文献１に開示された電子機器は、プリント基板と、プリント基板上に設置された発熱部品と、プリント基板を取り付けて発熱部品を収納する樹脂からなる筐体と、筐体に固定されて発熱部品と接触状態にある金属板からなる熱伝導部材と、を有し、発熱部品から発生した熱が、金属板からなる熱伝導部材の全体へと拡散することにより、効率よく放熱することができるようになっている。
特開２０００−３１６７４号公報 The electronic device disclosed in Patent Document 1 includes a printed circuit board, a heat generating component installed on the printed circuit board, a housing made of a resin that attaches the printed circuit board and stores the heat generating component, and is fixed to the housing. A heat conductive member made of a metal plate in contact with the heat generating component, and the heat generated from the heat generating component diffuses throughout the heat conductive member made of the metal plate, thereby efficiently dissipating heat. It can be done.
Japanese Patent Laid-Open No. 2000-31674

従来の筐体内部の熱を効率よく放熱する技術では、発熱部品と熱伝導部材とが当接され、この互いに当接された部位を介して発熱部品から熱伝導部材へと熱を誘導するようになっている。このため、発熱部品から熱伝導部材へ移動する熱は、発熱部品と熱伝導部材との当接部位に集中する。 In the conventional technology for efficiently dissipating the heat inside the casing, the heat generating component and the heat conducting member are brought into contact with each other, and heat is induced from the heat generating component to the heat conducting member through the contacted portions. It has become. For this reason, the heat transferred from the heat generating component to the heat conducting member is concentrated on the contact portion between the heat generating component and the heat conducting member.

したがって、熱伝導部材の当接部位付近の温度は、他の部位の温度よりも高くなってしまう。このため、発熱部品や熱伝導部材から外部筐体までの距離が短い携帯端末に対して従来の技術を適用すると、筐体の外側面の当接部位に対応する部分も高温になってしまう。筐体の外側面に高温部分が形成されることによる弊害としては、この高温部分を触れ続けたユーザが低温やけどしたり、樹脂製の筐体が変形したりすることなどが挙げられる。 Therefore, the temperature in the vicinity of the contact portion of the heat conducting member is higher than the temperature of other portions. For this reason, when the conventional technique is applied to a portable terminal having a short distance from the heat generating component or the heat conducting member to the external housing, the portion corresponding to the contact portion on the outer surface of the housing also becomes high temperature. The adverse effects caused by the formation of a high-temperature portion on the outer surface of the housing include a low-temperature burn caused by a user who continues to touch the high-temperature portion, or a resin-made housing being deformed.

本発明は、上述した事情を考慮してなされたもので、筐体の外側面の最高温部分の温度が所定の温度以下となるように筐体内部の熱を効率よく拡散することができる携帯端末を提供することを目的とする。 The present invention has been made in consideration of the above-described circumstances, and is a portable device capable of efficiently diffusing the heat inside the casing so that the temperature of the highest temperature portion on the outer side surface of the casing is equal to or lower than a predetermined temperature. The purpose is to provide a terminal.

本発明に係る携帯端末は、上述した課題を解決するために、内部に発熱部材が配設された筐体と、前記筐体に対する前記発熱部材から発生した熱の流れを制御する熱流制御手段と、を備え、前記熱流制御手段は、一端が前記発熱部材と接続され、他端が前記筐体と接続された複数の熱伝導部材を有することにより、前記筐体の外側面の最高温部分における温度が所定の温度以下となるように前記筐体に対する前記発熱部材から発生した熱の流れを制御可能に構成されたことを特徴とするものである。 In order to solve the above-described problem, a portable terminal according to the present invention includes a housing in which a heat generating member is disposed, and a heat flow control unit that controls a flow of heat generated from the heat generating member with respect to the housing. The heat flow control means includes a plurality of heat conducting members, one end of which is connected to the heat generating member and the other end of which is connected to the housing. The flow of heat generated from the heat generating member with respect to the casing is controllable so that the temperature is equal to or lower than a predetermined temperature.

また、本発明に係る携帯端末は、上述した課題を解決するために、内部に発熱部材が配設された筐体と、前記筐体に対する前記発熱部材から発生した熱の流れを制御する熱流制御手段と、を備え、前記熱流制御手段は、前記筐体内部に前記発熱部材と対向するように配設され、前記発熱部材から放射される熱量を遮蔽する熱遮蔽手段を有することにより、前記筐体の外側面の最高温部分における温度が所定の温度以下となるように前記筐体に対する前記発熱部材から発生した熱の流れを制御可能に構成されたことを特徴とするものである。 In addition, in order to solve the above-described problem, the mobile terminal according to the present invention includes a housing in which a heat generating member is disposed, and a heat flow control that controls a flow of heat generated from the heat generating member with respect to the housing. And the heat flow control means is disposed inside the housing so as to face the heat generating member, and has a heat shielding means for shielding the amount of heat radiated from the heat generating member. The flow of heat generated from the heat generating member with respect to the casing can be controlled so that the temperature at the highest temperature portion of the outer surface of the body is equal to or lower than a predetermined temperature.

本発明に係る携帯端末によれば、筐体の外側面の最高温部分の温度が所定の温度以下となるように筐体内部の熱を効率よく拡散することができる。 According to the mobile terminal of the present invention, the heat inside the casing can be efficiently diffused so that the temperature of the highest temperature portion on the outer surface of the casing is equal to or lower than a predetermined temperature.

本発明に係る携帯端末の実施の形態について、添付図面を参照して説明する。なお、以下の説明においては、折りたたみ式の携帯電話機を携帯端末の一例として示す。 Embodiments of a portable terminal according to the present invention will be described with reference to the accompanying drawings. In the following description, a foldable mobile phone is shown as an example of a mobile terminal.

図１は、本発明に係る携帯端末１０の第１実施形態を示す概略的な全体構成図である。 FIG. 1 is a schematic overall configuration diagram showing a first embodiment of a mobile terminal 10 according to the present invention.

図１（ａ）には携帯端末１０が開いている状態における正面からみた外観図を、図１（ｂ）には側面から見た外観図を、それぞれ示した。また、図２は、図１に示す携帯端末１０が閉じている状態における正面から見た外観図である。 FIG. 1A shows an external view seen from the front when the mobile terminal 10 is open, and FIG. 1B shows an external view seen from the side. FIG. 2 is an external view of the portable terminal 10 shown in FIG. 1 as viewed from the front in a closed state.

携帯端末１０は、第１の筐体１１、第２の筐体１２、および第２の筐体１２に対し第１の筐体１１を開閉自在に連結する連結部１３を有する。 The mobile terminal 10 includes a first casing 11, a second casing 12, and a connecting portion 13 that connects the first casing 11 to the second casing 12 so that the first casing 11 can be opened and closed.

第１の筐体１１は、第１の面１４とこの第１の面１４の背面である第２の面１５（外側面）とを有する。第１の面１４には、操作部１６が設けられる。 The first housing 11 has a first surface 14 and a second surface 15 (outer surface) that is the back surface of the first surface 14. An operation unit 16 is provided on the first surface 14.

第２の筐体１２には、表示部１７が設けられる（図１（ａ）参照）。第２の筐体１２は、第１の筐体１１に対して、開閉軸を中心として矢印Ｘの方向に開閉自在となるように、連結部１３（ヒンジ）を介して連結される。第２の筐体１２が開閉軸を中心として矢印Ｘの方向に回転することにより、携帯端末１０は、図１（ａ）および（ｂ）の開いている状態（以下、開状態という）と、図２の閉じた状態（以下、閉状態という）とで位置決めすることができる。 The second housing 12 is provided with a display unit 17 (see FIG. 1A). The second casing 12 is connected to the first casing 11 via a connecting portion 13 (hinge) so that the second casing 12 can be opened and closed in the direction of the arrow X around the opening / closing axis. When the second casing 12 rotates about the opening / closing axis in the direction of the arrow X, the mobile terminal 10 is in an open state (hereinafter referred to as an open state) in FIGS. Positioning can be performed in the closed state of FIG. 2 (hereinafter referred to as the closed state).

操作部１６は、たとえばキーボード、タッチパネル、テンキーなどの一般的な入力装置により構成され、ユーザの操作に対応した操作入力信号を出力する。 The operation unit 16 is configured by a general input device such as a keyboard, a touch panel, and a numeric keypad, and outputs an operation input signal corresponding to a user operation.

表示部１７は、たとえば液晶ディスプレイやＯＬＥＤ（Organic Light Emitting Device）ディスプレイなどの一般的な表示出力装置により構成され、表示部１７の背景画像（壁紙）、壁紙に重畳表示される電池残量や電波強度を概略的に示す画像などの各種アイコンや、着信時に表示される画像および映像などを表示する。 The display unit 17 is configured by a general display output device such as a liquid crystal display or an OLED (Organic Light Emitting Device) display, for example, and displays a background image (wallpaper) of the display unit 17, a remaining battery level and radio waves superimposed on the wallpaper. Various icons such as an image that schematically shows the intensity, and an image and video that are displayed when an incoming call is received are displayed.

図３は、第１実施形態に係る第１の筐体１１の内部構造を示す概略的な構成図である。 FIG. 3 is a schematic configuration diagram showing the internal structure of the first housing 11 according to the first embodiment.

第１の筐体１１の内部には、プリント基板２０と、プリント基板２０に固設された発熱部材２１と、熱流制御手段としての複数の熱伝導部材２２とが配設される。 Inside the first housing 11, a printed circuit board 20, a heat generating member 21 fixed to the printed circuit board 20, and a plurality of heat conducting members 22 as heat flow control means are disposed.

プリント基板２０には、種々の電子回路モジュールが固設される。この電子回路モジュールには、動作に伴い発熱する発熱部材２１が含まれる。 Various electronic circuit modules are fixed to the printed circuit board 20. The electronic circuit module includes a heat generating member 21 that generates heat during operation.

第１の筐体１１の外側面は、一般に、発熱部材２１に対向する部分が最高温部分となりやすい。最高温部分の温度が所定の温度より高くなると、たとえば最高温部分を長時間直接接触したユーザが低温やけどを受傷する危険がある。低温やけどは、体温よりやや高い温度に長時間直接接触することにより受傷することが知られている。 In general, on the outer surface of the first housing 11, the portion facing the heat generating member 21 tends to be the highest temperature portion. If the temperature of the highest temperature part becomes higher than a predetermined temperature, for example, a user who has directly contacted the highest temperature part for a long time may be injured by low temperature burns. It is known that low-temperature burns are injured by direct contact with a temperature slightly higher than body temperature for a long time.

図３に示すように、第２の面１５の発熱部材２１に対向する部分に熱量が集中することを防ぐため、熱流制御手段としての複数の熱伝導部材２２は、一端を発熱部材２１と接続され、他端を第２の面１５の背面と接続される。 As shown in FIG. 3, in order to prevent the amount of heat from concentrating on the portion of the second surface 15 facing the heat generating member 21, one end of the plurality of heat conducting members 22 as heat flow control means is connected to the heat generating member 21. The other end is connected to the back surface of the second surface 15.

同一の熱伝導率を有する熱伝導材料により伝導される熱量は、熱伝導材料の長さに反比例し、断面積に比例する。このため、全ての熱伝導部材２２を同一の熱伝導率を有する材料で構成する場合には、各熱伝導部材２２の長さＬおよび伝熱方向に対する断面積Ｓは、長さＬと断面積Ｓとの比が全ての熱伝導部材２２において同一となるようにする。この場合、各熱伝導部材２２により第２の筐体１２の背面に伝導される熱量を同一にすることができる。 The amount of heat conducted by the thermally conductive material having the same thermal conductivity is inversely proportional to the length of the thermally conductive material and proportional to the cross-sectional area. For this reason, when all the heat conductive members 22 are comprised with the material which has the same heat conductivity, the cross-sectional area S with respect to the length L and the heat transfer direction of each heat conductive member 22 is the length L and cross-sectional area. The ratio with S is made the same in all the heat conducting members 22. In this case, the amount of heat conducted to the back surface of the second housing 12 by each heat conducting member 22 can be made the same.

このため、本実施形態に係る携帯端末１０は、複数の熱伝導部材２２により、発熱部材２１から発生する熱を、第２の筐体１２の背面の複数の箇所に均一に分散して伝導することが可能である。したがって、本実施形態に係る携帯端末１０によれば、第１の筐体１１の外側面の最高温部分における温度が所定の温度以下となるように、第１の筐体１１に対する発熱部材２１から発生した熱の流れを制御することができる。 For this reason, the mobile terminal 10 according to the present embodiment conducts the heat generated from the heat generating member 21 by uniformly distributing the heat generated from the heat generating member 21 to a plurality of locations on the back surface of the second housing 12 by the plurality of heat conducting members 22. It is possible. Therefore, according to the mobile terminal 10 according to the present embodiment, from the heat generating member 21 for the first housing 11 such that the temperature at the highest temperature portion of the outer surface of the first housing 11 is equal to or lower than a predetermined temperature. The generated heat flow can be controlled.

なお、熱伝導部材２２は、複数の熱伝導部材２２要素により構成されても構わない。複数の熱伝導部材２２要素で構成することにより、単一の熱伝導部材２２要素により熱伝導部材２２を構成する場合に比べ、実効断面積を容易に大きく取ることが可能となる。 The heat conducting member 22 may be composed of a plurality of heat conducting member 22 elements. By configuring with a plurality of heat conducting member 22 elements, it is possible to easily increase the effective cross-sectional area as compared with the case where the heat conducting member 22 is configured with a single heat conducting member 22 element.

次に、本発明に係る携帯端末の第２実施形態について説明する。 Next, a second embodiment of the mobile terminal according to the present invention will be described.

本実施形態に係る携帯端末１０Ａは、熱流制御手段の構成が第１実施形態に係る携帯端末１０と異なる。他の構成および作用については第１実施形態にかかる携帯端末１０と実質的に異ならないため、同じ構成には同一符号を付して説明を省略する。 The mobile terminal 10A according to the present embodiment is different from the mobile terminal 10 according to the first embodiment in the configuration of the heat flow control means. Since other configurations and operations are not substantially different from those of the mobile terminal 10 according to the first embodiment, the same components are denoted by the same reference numerals and description thereof is omitted.

第１実施形態に係る携帯端末１０の熱流制御手段は、発熱部材２１からの熱伝導を制御するものである。これに対し、第２実施形態に係る携帯端末１０の熱流制御手段は、主に発熱部材２１からの熱放射を制御することにより、第１の筐体１１の外側面の最高温部分における温度を所定の温度以下とするものである。 The heat flow control means of the mobile terminal 10 according to the first embodiment controls heat conduction from the heat generating member 21. On the other hand, the heat flow control means of the mobile terminal 10 according to the second embodiment mainly controls the heat radiation from the heat generating member 21 to thereby adjust the temperature at the highest temperature portion of the outer surface of the first housing 11. The temperature is set to a predetermined temperature or lower.

図４は、第２実施形態に係る第１の筐体１１の内部構造を示す概略的な構成図である。 FIG. 4 is a schematic configuration diagram showing the internal structure of the first housing 11 according to the second embodiment.

第１の筐体１１の内部には、プリント基板２０と、プリント基板２０に固設された発熱部材２１と、熱流制御手段としての熱拡散板２３および熱遮蔽部材２４とが配設される。 Inside the first housing 11, a printed circuit board 20, a heat generating member 21 fixed to the printed circuit board 20, a heat diffusion plate 23 and a heat shielding member 24 as heat flow control means are disposed.

熱拡散板２３は、たとえば金属などの熱伝導率の高い材料により構成されて発熱部材２１と対向するように配設される。この熱拡散板２３は、発熱部材２１と接触するように配設されてもよい。 The heat diffusing plate 23 is made of a material having high thermal conductivity such as metal and is disposed so as to face the heat generating member 21. The heat diffusion plate 23 may be disposed so as to be in contact with the heat generating member 21.

図４に示すように、熱遮蔽部材２４は、熱拡散板２３と第１の筐体１１との間に、熱拡散板２３および第１の筐体１１と互いに離間して、発熱部材２１と対向する位置に配設される。また、熱遮蔽部材２４は、図示しない支持手段により熱拡散板２３に支持される。 As shown in FIG. 4, the heat shielding member 24 is separated from the heat diffusion plate 23 and the first housing 11 between the heat diffusion plate 23 and the first housing 11, and It arrange | positions in the position which opposes. Further, the heat shielding member 24 is supported on the heat diffusion plate 23 by a support means (not shown).

本実施形態にかかる携帯端末１０Ａによれば、熱拡散板２３により発熱部材２１の熱を拡散するとともに、熱遮蔽部材２４により、第１の筐体１１の外側面の発熱部材２１に対向する部分に放射される熱を抑制することができる。このため、本実施形態に係る携帯端末１０Ａによっても、第１の筐体１１の外側面の最高温部分における温度が所定の温度以下となるように、第１の筐体１１に対する発熱部材２１から発生した熱の流れを制御することができる。 According to the mobile terminal 10 </ b> A according to the present embodiment, the heat diffusing plate 23 diffuses the heat of the heat generating member 21, and the heat shielding member 24 faces the heat generating member 21 on the outer side surface of the first housing 11. The heat radiated to can be suppressed. For this reason, also from 10 A of portable terminals which concern on this embodiment, from the heat generating member 21 with respect to the 1st housing | casing 11 so that the temperature in the highest temperature part of the outer surface of the 1st housing | casing 11 may become below predetermined temperature. The generated heat flow can be controlled.

なお、熱遮蔽部材２４は、均一の厚さを有する単板で構成してもよいし、均一厚の単板を積層し手構成してもよい。また、発熱部材２１の熱放射を最も受ける部分が最も厚くなるように構成しても構わない。また、熱拡散板２３は、熱遮蔽部材２４より大きい面積を有するようにするとよい。 The heat shielding member 24 may be configured by a single plate having a uniform thickness, or may be manually configured by stacking single plates having a uniform thickness. Moreover, you may comprise so that the part which receives the heat radiation of the heat generating member 21 most may become thickest. The heat diffusion plate 23 may have a larger area than the heat shielding member 24.

図５は、図４に示す熱遮蔽部材２４の第１変形例を示す図である。 FIG. 5 is a view showing a first modification of the heat shielding member 24 shown in FIG.

熱遮蔽部材２４の第１変形例は、熱遮蔽部材２４が熱拡散板２３の上に密接して配設される場合の例である。図５には、熱遮蔽部材２４が、発熱部材２１と対向する面の背面上の発熱部材２１と対向する位置に配設された場合の一例を示した。 The first modification of the heat shielding member 24 is an example in the case where the heat shielding member 24 is disposed in close contact with the heat diffusion plate 23. FIG. 5 shows an example where the heat shielding member 24 is disposed at a position facing the heat generating member 21 on the back surface of the surface facing the heat generating member 21.

この場合も、熱遮蔽部材２４は、第１の筐体１１の外側面の発熱部材２１に対向する部分に放射される熱を抑制するために用いられる。たとえば、発熱部材２１と対向する面の背面上の発熱部材２１と対向する位置に、黒色などのペイント（皮膜）を熱遮蔽部材２４として施す、またはテープや板を熱遮蔽部材２４として貼ることにより、発熱部材２１からの熱放射を効率よく遮蔽することができる。 Also in this case, the heat shielding member 24 is used to suppress heat radiated to a portion of the outer side surface of the first housing 11 facing the heat generating member 21. For example, by applying a paint (film) such as black as the heat shielding member 24 or a tape or plate as the heat shielding member 24 at a position facing the heat generating member 21 on the back surface of the surface facing the heat generating member 21. The heat radiation from the heat generating member 21 can be efficiently shielded.

なお、熱遮蔽部材２４としてのペイント、テープまたは板は、発熱部材２１と対向する位置に加えて、さらに広範囲にわたり熱拡散板２３の上に配設してもよい。この場合、第１の筐体１１の外側面における温度の均一化を図るべく、発熱部材２１と対向する位置とこの位置以外の位置とで、熱遮蔽部材２４の放射率が異なるようにしてもよい。 The paint, tape, or plate as the heat shielding member 24 may be disposed on the heat diffusion plate 23 over a wider range in addition to the position facing the heat generating member 21. In this case, in order to make the temperature uniform on the outer surface of the first housing 11, the emissivity of the heat shielding member 24 may be different between a position facing the heat generating member 21 and a position other than this position. Good.

図６は、図５に示す熱遮蔽部材２４が、発熱部材２１と対向する面上の発熱部材２１と対向する位置に配設された場合の一例を示す図である。 FIG. 6 is a diagram illustrating an example in which the heat shielding member 24 illustrated in FIG. 5 is disposed at a position facing the heat generating member 21 on the surface facing the heat generating member 21.

この場合も、図５に示す位置に配設された場合と同様に、第１の筐体１１の外側面の発熱部材２１に対向する部分に放射される熱を抑制することができる。また、この場合、図５に示す場合に比べ、熱遮蔽部材２４が配設された部分における熱拡散板２３の温度が低くなる。このため、この場合、熱拡散板２３は、熱拡散板２３の発熱部材２１と対向する面の背面を、第２の面１５の背面に密接するように配設しても、第１の筐体１１の外側面の最高温部分における温度を所定の温度以下とすることができる。 Also in this case, the heat radiated to the portion facing the heat generating member 21 on the outer side surface of the first housing 11 can be suppressed, as in the case of being disposed at the position shown in FIG. Further, in this case, the temperature of the thermal diffusion plate 23 in the portion where the heat shielding member 24 is disposed is lower than in the case shown in FIG. Therefore, in this case, even if the heat diffusing plate 23 is disposed so that the back surface of the heat diffusing plate 23 facing the heat generating member 21 is in close contact with the back surface of the second surface 15, The temperature at the highest temperature portion of the outer surface of the body 11 can be set to a predetermined temperature or lower.

図７は、図４に示す熱遮蔽部材２４の第２変形例を示す図である。 FIG. 7 is a view showing a second modification of the heat shielding member 24 shown in FIG.

熱遮蔽部材２４の第２変形例は、熱拡散板２３を用いず、熱遮蔽部材２４としてのペイント、テープまたは板材が第２の面１５の背面上に密接して配設される場合の例である。 The second modification of the heat shielding member 24 is an example in which the heat diffusing plate 23 is not used and the paint, tape, or plate material as the heat shielding member 24 is disposed in close contact with the back surface of the second surface 15. It is.

発熱部材２１と第１の筐体１１とが離間している場合、発熱部材２１の発熱量によっては、熱拡散板２３を必要とせず、熱遮蔽部材２４のみで足りる場合、熱遮蔽部材２４を第２の面１５の背面上に密接して配設するだけで、第１の筐体１１の外側面の最高温部分における温度を所定の温度以下とすることができる。 When the heat generating member 21 and the first casing 11 are separated from each other, depending on the amount of heat generated by the heat generating member 21, the heat diffusion plate 23 is not necessary and only the heat shielding member 24 is sufficient. The temperature at the highest temperature portion on the outer side surface of the first housing 11 can be set to a predetermined temperature or less simply by being closely disposed on the back surface of the second surface 15.

なお、この場合も、図５および図６に示した熱遮蔽部材２４の第１変形例と同様に、熱遮蔽部材２４としてのペイント、テープまたは板は、発熱部材２１と対向する位置に加えて、さらに広範囲にわたり熱拡散板２３の上に配設してもよい。また、第１の筐体１１の外側面における温度の均一化を図るべく、発熱部材２１と対向する位置とこの位置以外の位置とで、熱遮蔽部材２４の放射率が異なるようにしてもよい。 In this case as well, as in the first modification of the heat shielding member 24 shown in FIGS. 5 and 6, the paint, tape, or plate as the heat shielding member 24 is added to the position facing the heat generating member 21. Further, it may be disposed on the heat diffusion plate 23 over a wider range. Further, in order to make the temperature uniform on the outer surface of the first housing 11, the emissivity of the heat shielding member 24 may be different between a position facing the heat generating member 21 and a position other than this position. .

なお、本発明は上記実施形態そのままに限定されるものではなく、実施段階ではその要旨を逸脱しない範囲で構成要素を変形して具体化できる。また、上記実施形態に開示されている複数の構成要素の適宜な組み合わせにより、種々の発明を形成できる。例えば、実施形態に示される全構成要素から幾つかの構成要素を削除してもよい。さらに、異なる実施形態にわたる構成要素を適宜組み合わせても良い。 Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. In addition, various inventions can be formed by appropriately combining a plurality of components disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, the constituent elements over different embodiments may be appropriately combined.

また、本発明は、上記説明した携帯電話機のほかにも、筐体内部に発熱部材を有するあらゆる携帯端末に適用可能であり、たとえば、ノートブック型のパーソナルコンピュータ、ＰＤＡ（Personal Digital Assistant）、携帯型ゲーム機、携帯型音楽再生機、携帯型動画再生機などの携帯端末に適用することが可能である。 The present invention can be applied to any portable terminal having a heat generating member inside the casing in addition to the above-described cellular phone. For example, a notebook personal computer, PDA (Personal Digital Assistant), portable It can be applied to portable terminals such as portable game machines, portable music players, and portable video players.

（ａ）は携帯端末が開いている状態における正面からみた外観図、（ｂ）は側面から見た外観図。(A) is the external view seen from the front in the state in which the portable terminal is open, (b) is the external view seen from the side. 図１に示す携帯端末が閉じている状態における正面から見た外観図。The external view seen from the front in the state in which the portable terminal shown in FIG. 1 is closed. 第１実施形態に係る第１の筐体の内部構造を示す概略的な構成図。The schematic block diagram which shows the internal structure of the 1st housing | casing which concerns on 1st Embodiment. 第２実施形態に係る第１の筐体の内部構造を示す概略的な構成図。The schematic block diagram which shows the internal structure of the 1st housing | casing which concerns on 2nd Embodiment. 図４に示す熱遮蔽部材の第１変形例を示す図。The figure which shows the 1st modification of the heat shielding member shown in FIG. 図５に示す熱遮蔽部材が、発熱部材と対向する面上の発熱部材と対向する位置に配設された場合の一例を示す図。The figure which shows an example when the heat shielding member shown in FIG. 5 is arrange | positioned in the position facing the heat generating member on the surface facing a heat generating member. 図４に示す熱遮蔽部材の第２変形例を示す図。The figure which shows the 2nd modification of the heat shielding member shown in FIG.

符号の説明Explanation of symbols

１０、１０Ａ携帯端末
１１第１の筐体
１２第２の筐体
１３連結部
１４第１の面
１５第２の面
１６操作部
１７表示部
２０プリント基板
２１発熱部材
２２熱伝導部材
２３熱拡散板
２４熱遮蔽部材 DESCRIPTION OF SYMBOLS 10, 10A Portable terminal 11 1st housing | casing 12 2nd housing | casing 13 Connection part 14 1st surface 15 2nd surface 16 Operation part 17 Display part 20 Printed circuit board 21 Heat generating member 22 Thermal conduction member 23 Thermal diffusion plate 24 Heat shielding member

Claims

内部に発熱部材が配設された筐体と、
前記筐体に対する前記発熱部材から発生した熱の流れを制御する熱流制御手段と、
を備え、
前記熱流制御手段は、
一端が前記発熱部材と接続され、他端が前記筐体と接続された複数の熱伝導部材を有することにより、前記筐体の外側面の最高温部分における温度が所定の温度以下となるように前記筐体に対する前記発熱部材から発生した熱の流れを制御可能に構成され、
前記熱伝導部材のそれぞれは、前記各熱伝導部材により前記発熱部材から前記筐体に伝導される熱量が、前記筐体との各接続部位において略等しくなるように、前記熱伝導部材の長さと前記熱伝導部材の伝熱方向に直交する方向の断面積との比が全ての熱伝導部材において同一となるよう構成されたことを特徴とする携帯端末。 A housing having a heat generating member disposed therein;
Heat flow control means for controlling the flow of heat generated from the heat generating member with respect to the housing;
With
The heat flow control means includes
By having a plurality of heat conducting members having one end connected to the heat generating member and the other end connected to the casing, the temperature at the highest temperature portion of the outer surface of the casing is equal to or lower than a predetermined temperature. The flow of heat generated from the heat generating member with respect to the housing is configured to be controllable ,
Each of the heat conducting members has a length of the heat conducting member such that the amount of heat conducted from the heat generating member to the housing by each of the heat conducting members is substantially equal at each connection site with the housing. A portable terminal characterized in that a ratio of a cross-sectional area in a direction orthogonal to a heat transfer direction of the heat conducting member is the same in all the heat conducting members .

前記熱流制御手段は、前記筐体内部に前記発熱部材と対向するように配設され、前記発熱部材から放射される熱量を遮蔽する熱遮蔽手段を有することにより、前記筐体の外側面の最高温部分における温度が所定の温度以下となるように前記筐体に対する前記発熱部材から発生した熱の流れを制御可能に構成されたことを特徴とする請求項１記載の携帯端末。 Before Kinetsuryu control means, wherein it disposed so as to face the casing interior to the heating member, by having the heat-shielding means for shielding heat radiated from the heat generating member, the outer surface of the housing The mobile terminal according to claim 1 , wherein the flow of heat generated from the heat generating member with respect to the casing is controllable so that the temperature in the highest temperature portion is equal to or lower than a predetermined temperature.

前記熱流制御手段は、前記筐体内部に前記発熱部材と対向するように配設され、前記熱遮蔽手段以上の面積を有する熱拡散手段をさらに有し、
前記熱遮蔽手段は、前記熱拡散手段と前記筐体との間に、前記熱拡散手段および前記筐体と互いに離間して、前記発熱部材と対向する位置に配設された、請求項２記載の携帯端末。 The heat flow control means further includes a heat diffusion means disposed inside the casing so as to face the heat generating member and having an area larger than the heat shielding means,
Said heat shielding means between said thermal spreading means and said housing, spaced apart from each other and the heat spreading means and the housing, is disposed at a position facing the heat generating member, according to claim 2, wherein Mobile devices.

前記熱流制御手段は、前記筐体内部に前記発熱部材と対向するように配設され、前記熱遮蔽手段以上の面積を有する熱拡散手段をさらに有し、
前記熱遮蔽手段は、前記熱拡散手段の前記発熱部材と対向する面の背面上の前記発熱部材と対向する位置に配設された、請求項２記載の携帯端末。 The heat flow control means further includes a heat diffusion means disposed inside the casing so as to face the heat generating member and having an area larger than the heat shielding means,
The portable terminal according to claim 2 , wherein the heat shielding unit is disposed at a position facing the heat generating member on a back surface of the surface of the heat diffusing unit facing the heat generating member.

前記熱流制御手段は、前記筐体内部に前記発熱部材と対向するように配設され、前記熱遮蔽手段以上の面積を有する熱拡散手段をさらに有し、
前記熱遮蔽手段は、前記熱拡散手段の前記発熱部材と対向する面上の、前記発熱部材と対向する位置に配設された、請求項２記載の携帯端末。 The heat flow control means further includes a heat diffusion means disposed inside the casing so as to face the heat generating member and having an area larger than the heat shielding means,
The portable terminal according to claim 2 , wherein the heat shielding unit is disposed at a position facing the heat generating member on a surface of the heat diffusing unit facing the heat generating member.

前記熱拡散手段は、前記発熱部材と対向する面の背面が前記筐体の内側面に密接されるように配設された、請求項４記載の携帯端末。 The portable terminal according to claim 4 , wherein the heat diffusing unit is disposed so that a back surface of a surface facing the heat generating member is in close contact with an inner surface of the housing.

前記熱遮蔽手段は、前記筐体の内側面上の前記発熱部材と対向する位置に配設された、請求項２記載の携帯端末。 The portable terminal according to claim 2 , wherein the heat shielding unit is disposed at a position facing the heat generating member on an inner surface of the housing.