JP2009079993A - Display device - Google Patents

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JP2009079993A
JP2009079993A JP2007249130A JP2007249130A JP2009079993A JP 2009079993 A JP2009079993 A JP 2009079993A JP 2007249130 A JP2007249130 A JP 2007249130A JP 2007249130 A JP2007249130 A JP 2007249130A JP 2009079993 A JP2009079993 A JP 2009079993A
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Prior art keywords
heat transfer
heat
wall portion
light emitting
attachment
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Hideki Igarashi
秀樹 五十嵐
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Nippon Seiki Co Ltd
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Nippon Seiki Co Ltd
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Priority to JP2007249130A priority Critical patent/JP2009079993A/en
Priority to PCT/JP2008/066699 priority patent/WO2009041317A1/en
Publication of JP2009079993A publication Critical patent/JP2009079993A/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
    • G01D11/24—Housings ; Casings for instruments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
    • B60K35/21—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor using visual output, e.g. blinking lights or matrix displays
    • B60K35/215—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor using visual output, e.g. blinking lights or matrix displays characterised by the combination of multiple visual outputs, e.g. combined instruments with analogue meters and additional displays
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
    • G01D11/30—Supports specially adapted for an instrument; Supports specially adapted for a set of instruments

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Instrument Panels (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device excellent in assembling while lowering effects on a frame and a circuit board, when building in a cooling module including a heat transfer member and a heat dissipation member. <P>SOLUTION: The display device includes: a speed meter (first display means) SP; a display unit (second display means) 9; a light emitting means 94 built in this display unit 9; the frame body 3 which has a first wall 31 and a second wall 32, and couples the speed meter SP with the display unit 9; a heat sink (heat dissipation member) 101; and the heat transfer member 102 for transferring heat generated in the light emitting means 94 to the heat sink 101. The heat transfer member 102 is configured to be respectively connected and fixed to the light emitting means 94 and the heat dissipation member 101 through the second wall 32. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、例えば車両のダッシュボードに搭載され、観察者（主にドライバー）に表示手段を通じて各種情報を表示する表示装置に関するもので、特に表示手段を照明する発光手段にて発生した熱を外部雰囲気中に放熱する放熱手段を組み込んでなる表示装置に係わる。   The present invention relates to a display device that is mounted on, for example, a dashboard of a vehicle and displays various kinds of information to an observer (mainly a driver) through display means. In particular, the heat generated by light-emitting means that illuminates the display means is externally applied. The present invention relates to a display device incorporating a heat radiating means for radiating heat in an atmosphere.

この種の表示装置として、例えば下記特許文献１に記載されているものが知られている。この表示装置は、第１の所定情報として観察者に車速とエンジン回転数を指針式表示する第１の表示手段（車速計Ａ、回転計Ｂ、燃料計Ｃ）と、第２の所定情報として観察者に走行距離情報を表示する第２の表示手段（液晶パネル１５参照）と、この第２の表示手段を照明する発光手段（発光ダイオード６１ａ参照）と、観察者に対向するように延在する第１の壁部とこの第１の壁部の周囲を取り巻くように当該第１の壁部の延在方向に対して直交する方向に延びる第２の壁部とを有し第１，第２の表示手段を結合するフレーム体（ケース１８参照）と、第１の壁部の観察者とは反対側に配置される回路基板（意匠基板４参照）と、この回路基板を覆うカバー（裏カバー１９参照）とを備えている。
特開２００５−０３７２３８号公報 As this type of display device, for example, a device described in Patent Document 1 below is known. The display device includes first display means (vehicle speed meter A, tachometer B, fuel meter C) for displaying the vehicle speed and the engine speed to the observer as first predetermined information, and second predetermined information as second predetermined information. Second display means (see the liquid crystal panel 15) for displaying the travel distance information to the observer, light emitting means (see the light emitting diode 61a) for illuminating the second display means, and extending so as to face the observer A first wall portion and a second wall portion extending in a direction orthogonal to the extending direction of the first wall portion so as to surround the periphery of the first wall portion. A frame body (see the case 18) that couples the two display means, a circuit board (see the design board 4) disposed on the opposite side of the first wall from the observer, and a cover (back) that covers the circuit board Cover 19).
JP 2005-037238 A

ところで最近では、液晶パネル（第２の表示手段）として高精細表示が可能なＴＦＴ（薄膜トランジスタ）型の液晶パネルが望まれている。ＴＦＴ型の液晶パネルに限らず液晶パネルの照明には、バックライトと称される発光手段が採用されるが、ＴＦＴ型の液晶パネルの場合は、発光手段の高輝度化が要求される。発光手段の高輝度化対策としては、光源の数を増やしたり、高輝度発光が可能な高スペック光源を採用するのが一般的であるが、光源数の増加や高スペック光源を採用は、発熱の増大に直結するため、放熱装置を採用する必要がある。   Recently, a TFT (thin film transistor) type liquid crystal panel capable of high-definition display is desired as a liquid crystal panel (second display means). For illumination of the liquid crystal panel, not limited to the TFT type liquid crystal panel, a light emitting means called a backlight is adopted. However, in the case of a TFT type liquid crystal panel, it is required to increase the luminance of the light emitting means. As measures to increase the brightness of the light emitting means, it is common to increase the number of light sources or use a high-spec light source capable of high-intensity light emission, but increasing the number of light sources or using a high-spec light source generates heat. Therefore, it is necessary to employ a heat dissipation device.

このような放熱装置としては、例えば下記特許文献２に記載されているものが知られている。この放熱装置は、取付板（プレート１０ｂ参照）と、この取付板に取り付けられた伝熱部材（ヒートパイプ１０ｃ参照）と、この伝熱部材を通じて取付板に接続された放熱部材（放熱フィン１０ｄ参照）とを備えており、取付板を発光手段（導光板５、ＬＥＤ８、ＬＥＤ回路９等参照）の一部（ＬＥＤ回路９参照）に接続することによって、発光手段にて生じた熱を伝熱部材を通じて放熱部材への導き、外部雰囲気中に熱を放散するものである。この場合、取付板、伝熱部材、放熱部材の三者は、溶接接合にて一体化されることで冷却モジュールを構成し、このように予め一体化された冷却モジュールは、発光手段の一部であるＬＥＤ回路を挟んで、液晶パネル（液晶パネル１参照）と発光手段とを一体化するハウジング部材（反射板兼用ケース６参照）にねじ（ネジ１２参照）止め固定され、これにより、第２の表示手段（液晶パネル）と、発光手段と、冷却モジュールとを一体化した冷却モジュール付き表示ユニットが構成される。
特開２００６−２２７０７２公報 As such a heat radiating device, for example, one disclosed in Patent Document 2 below is known. The heat radiating device includes a mounting plate (see plate 10b), a heat transfer member attached to the mounting plate (see heat pipe 10c), and a heat radiating member connected to the mounting plate through the heat transfer member (see heat radiating fin 10d). ) And connecting the mounting plate to a part of the light emitting means (see the light guide plate 5, LED 8, LED circuit 9, etc.) (see LED circuit 9), thereby transferring heat generated by the light emitting means It leads to the heat dissipation member through the member and dissipates heat in the external atmosphere. In this case, the three members of the mounting plate, the heat transfer member, and the heat dissipation member constitute a cooling module by being integrated by welding joint, and the cooling module integrated in this way is a part of the light emitting means. A screw member (see screw 12) is fixed to a housing member (see case 6 also serving as a reflector) with a liquid crystal panel (see liquid crystal panel 1) and a light emitting means integrated with the LED circuit therebetween. The display unit with a cooling module is formed by integrating the display means (liquid crystal panel), the light emitting means, and the cooling module.
JP 2006-227072 A

そして前記特許文献１に記載の表示装置において、当該表示装置に採用されている第２の表示手段（液晶パネル１５参照）と発光手段（発光ダイオード６１ａ参照）の代わりに前記特許文献２に記載されている冷却モジュール付き表示ユニットを組み込むことにより、高精細表示を達成することが考えられる。この場合、放熱部材をカバーの外部に配置する等して外部雰囲気中への熱の放散性を確保する必要がある。   The display device described in Patent Document 1 is described in Patent Document 2 instead of the second display means (see the liquid crystal panel 15) and the light emitting means (see the light emitting diode 61a) employed in the display device. It is conceivable to achieve high-definition display by incorporating a display unit with a cooling module. In this case, it is necessary to ensure the heat diffusibility into the external atmosphere by arranging the heat radiating member outside the cover.

しかしながら、前記特許文献２記載の冷却モジュール付き表示ユニットを前記特許文献１記載の表示装置に組み込む場合、冷却モジュール付き表示ユニットを組み込むための挿通スペースを確保するためにフレーム体や回路基板を分割するか、あるいは冷却モジュール付き表示ユニットを挿通するためにフレーム体や回路基板に貫通孔を設ける必要があり、フレーム体や回路基板を分割する場合は、部品点数の増加に伴うコストアップを避けることが難しく、フレーム体や回路基板に貫通孔を形成する場合は、フレーム体の強度低下や回路基板における実装スペースの縮小化を招くといった問題がある。   However, when the display unit with the cooling module described in Patent Document 2 is incorporated into the display device described in Patent Document 1, the frame body and the circuit board are divided in order to secure an insertion space for incorporating the display unit with the cooling module. Alternatively, it is necessary to provide a through hole in the frame body or circuit board in order to insert the display unit with the cooling module, and when dividing the frame body or circuit board, avoid an increase in cost due to an increase in the number of parts. It is difficult to form a through-hole in the frame body or the circuit board, and there is a problem that the strength of the frame body is reduced and the mounting space on the circuit board is reduced.

一方、冷却モジュールを表示ユニットから分離し、表示装置に対して別々に組み付けてから両者を接続することにより、フレーム体や回路基板への影響を小さくすることも考えられる。この場合、フレーム体や回路基板には、取付板を挿通し得る貫通孔を形成すればよいので、そのぶん、貫通孔の大きさを小さくできる。またこの場合、伝熱部材は放熱部材から貫通孔を通って取付板に至る構成となる。   On the other hand, it is conceivable to reduce the influence on the frame body and the circuit board by separating the cooling module from the display unit and separately assembling the cooling module to the display device. In this case, the through-hole through which the mounting plate can be inserted may be formed in the frame body or the circuit board, so that the size of the through-hole can be reduced. Further, in this case, the heat transfer member is configured to reach the mounting plate from the heat dissipation member through the through hole.

しかしながら、冷却モジュールと表示ユニットとを表示装置に対して別々に組み付けて接続する場合、表示装置内部での接続作業となるため、作業性が悪いという問題がある。   However, when the cooling module and the display unit are separately assembled and connected to the display device, there is a problem that workability is poor because the connection work is performed inside the display device.

本発明はこの点に着目してなされたもので、その主な目的は、伝熱部材と放熱部材とを含む冷却モジュールを組み込むにあたり、フレーム体や回路基板に対する影響を小さくしながら組み付け性にも優れる表示装置を提供することにある。   The present invention has been made paying attention to this point, and its main purpose is to reduce the influence on the frame body and the circuit board while assembling the cooling module including the heat transfer member and the heat dissipation member. The object is to provide an excellent display device.

本発明は、前述した課題を解決するため、第１の所定情報を観察者に表示する第１の表示手段と、第２の所定情報を前記観察者に表示する第２の表示手段と、この第２の表示手段を照明する発光手段と、前記観察者に対向するように延在する第１の壁部とこの第１の壁部の周囲を取り巻く周壁からなる第２の壁部とを有し前記第１，第２の表示手段を結合するフレーム体と、前記第１の壁部の前記観察者側とは反対側に配置される放熱部材と、前記発光手段にて発生した熱を放熱部材に伝える伝熱部材と、を備えてなる表示装置において、前記伝熱部材は前記第２の壁部の外側を経て前記発光手段と前記放熱部材の各々に接続固定されてなることを特徴とする。   In order to solve the above-described problems, the present invention provides a first display means for displaying first predetermined information to an observer, a second display means for displaying second predetermined information to the observer, A light emitting means for illuminating the second display means; a first wall portion extending so as to face the observer; and a second wall portion comprising a peripheral wall surrounding the periphery of the first wall portion. A frame body that couples the first and second display means, a heat radiating member that is disposed on the opposite side of the observer from the first wall, and heat generated by the light emitting means. A heat transfer member for transmitting to the member, wherein the heat transfer member is connected and fixed to each of the light emitting means and the heat radiating member through the outside of the second wall portion. To do.

また本発明は、前記第２の壁部に第１の取付孔を設け、前記第２の表示手段に前記熱を前記伝熱部材に伝える第２の伝熱部材を設け、この第２の伝熱部材に前記第１の取付孔に対応する第２の取付孔を有する第１の伝熱性取付部を連続形成し、前記伝熱部材の前記発光手段側端部に前記第２の取付孔に対応する第３の取付孔を有する第２の伝熱性取付部を設け、前記第１の伝熱性取付部と第２の伝熱性取付部と前記第２の壁部とを重ねて前記第１，第２，第３の取付孔を位置合わせした状態で、前記第２の壁部の外側からもしくは前記第２の壁部の外側にて前記第１，第２，第３の取付孔に固定部材を挿入することにより前記第１の伝熱性取付部と第２の伝熱性取付部とを密着状態で前記第２の壁部に取付固定してなることを特徴とする。   In the present invention, a first mounting hole is provided in the second wall portion, and a second heat transfer member is provided in the second display means for transferring the heat to the heat transfer member. A first heat transfer attachment portion having a second attachment hole corresponding to the first attachment hole is continuously formed in the heat member, and the light emission means side end portion of the heat transfer member is formed in the second attachment hole. A second heat transfer attachment portion having a corresponding third attachment hole is provided, and the first heat transfer attachment portion, the second heat transfer attachment portion, and the second wall portion are overlapped with each other. In a state where the second and third mounting holes are aligned, the fixing member is fixed to the first, second and third mounting holes from the outside of the second wall portion or outside the second wall portion. The first heat transfer mounting portion and the second heat transfer mounting portion are attached and fixed to the second wall portion in close contact with each other.

また本発明は、前記第１の伝熱性取付部と第２の伝熱性取付部とが平行に延びることを特徴とする。 Further, the present invention is characterized in that the first heat conductive mounting portion and the second heat conductive mounting portion extend in parallel.

また本発明は、前記フレーム体に前記伝熱部材を収容する凹部を有することを特徴とする。 Further, the present invention is characterized in that the frame body has a recess for accommodating the heat transfer member.

本発明によれば、伝熱部材と放熱部材とを含む冷却モジュールを組み込むにあたり、フレーム体や回路基板に対する影響を小さくしながら組み付け性にも優れる表示装置を提供することができる。   ADVANTAGE OF THE INVENTION According to this invention, when incorporating the cooling module containing a heat-transfer member and a heat radiating member, the display apparatus which is excellent also in an assembly | attachment property can be provided, reducing the influence with respect to a frame body or a circuit board.

以下、添付図面に基づいて、本発明を適用した表示装置の実施形態を説明する。   Hereinafter, embodiments of a display device to which the present invention is applied will be described with reference to the accompanying drawings.

図１〜図４は、本発明の第１の実施形態を示すもので、図１は本実施形態による表示装置の正面図、図２は図１のＡ−Ａ断面図、図３は図１の要部拡大図、図４は図１の分解断面図である。   1 to 4 show a first embodiment of the present invention. FIG. 1 is a front view of a display device according to the present embodiment, FIG. 2 is a cross-sectional view taken along line AA in FIG. 1, and FIG. FIG. 4 is an exploded cross-sectional view of FIG.

図１において、本実施形態による表示装置は、例えば自動車のダッシュボードに搭載されるコンビネーションメータからなるもので、図中、中央に位置する速度計ＳＰと、図中、左側に位置するエンジン回転計ＴＡと、図中、右側に位置する燃料計ＦＵ及び水温ＴＥとを含んでいる。   In FIG. 1, the display device according to the present embodiment is composed of, for example, a combination meter mounted on a dashboard of an automobile. In the figure, a speedometer SP located at the center and an engine tachometer located on the left side in the figure. TA, fuel gauge FU and water temperature TE located on the right side in the figure are included.

これら速度計ＳＰ、エンジン回転計ＴＡ、燃料計ＦＵ、水温ＴＥは、カバー１と、回路基板２と、フレーム体３と、表示板４と、見返し板５とを共有する一方、各計器ＳＰ〜ＴＥ毎に専用のステッピングモータ６と、導光体７と、指針８とを有している。さらに速度計ＳＰの観察者Ｐ側にのみ表示器ユニット９が配置され、この表示器ユニット９には後述するバックライト（発光手段）が内装されると共に冷却ユニット１０が接続されている。なお本実施形態では、速度計ＳＰが車速からなる第１の所定情報を観察者Ｐに表示する第１の表示手段をなし、表示器ユニット９が後述する各種車両情報からなる第２の所定情報を観察者Ｐに表示する第２の表示手段をなすものである。   The speedometer SP, engine tachometer TA, fuel gauge FU, and water temperature TE share the cover 1, the circuit board 2, the frame body 3, the display board 4, and the turn-back board 5, while each instrument SP˜ Each TE has a dedicated stepping motor 6, a light guide 7, and a pointer 8. Furthermore, the display unit 9 is disposed only on the viewer P side of the speedometer SP. The display unit 9 is provided with a backlight (light emitting means) to be described later, and a cooling unit 10 is connected thereto. In the present embodiment, the speedometer SP serves as first display means for displaying the first predetermined information including the vehicle speed to the observer P, and the display unit 9 includes second predetermined information including various vehicle information described later. Is displayed on the observer P as a second display means.

以下、速度計ＳＰを代表として本実施形態による表示装置の詳細を説明する。   Hereinafter, the display device according to the present embodiment will be described in detail with the speedometer SP as a representative.

カバー１は、例えば遮光性を有する合成樹脂部材からなり、回路基板２の背面側（観察者Ｐとは反対側を覆っている。   The cover 1 is made of a synthetic resin member having a light shielding property, for example, and covers the back side of the circuit board 2 (the side opposite to the observer P).

回路基板２は、本実施形態の場合、硬質回路基板からなり、ステッピングモータ６と、例えば発光ダイオードからなる複数の光源Ｌが実装配置されている。   In the case of this embodiment, the circuit board 2 is made of a hard circuit board, and a stepping motor 6 and a plurality of light sources L made of, for example, light emitting diodes are mounted and disposed thereon.

フレーム体３は、観察者Ｐに対向するように回路基板２に沿って（断面形状が）屈曲かつ開口しながら延在する第１の壁部３１と、この第１の壁部３１の周囲を取り巻く周壁からなる第２の壁部３２とを有している。第２の壁部３２には、後述する第２，第３の取付孔に対応する第１の取付孔３３が形成されている。   The frame body 3 has a first wall portion 31 that extends while being bent and opened along the circuit board 2 so as to face the observer P (cross-sectional shape), and a periphery of the first wall portion 31. And a second wall portion 32 made of a surrounding wall. The second wall portion 32 is formed with a first mounting hole 33 corresponding to second and third mounting holes described later.

このフレーム体３は、例えば乳白色の合成樹脂からなり、カバー１、指針８が装着されたステッピングモータ６を支持する回路基板２、表示板４、導光体７、見返し板５からなる各部位品どうし、並びに速度計ＳＰ（主としてステッピングモータ６、表示板４、指針８からなる）と表示器ユニット９とを結合する骨格部品となるもので、フレーム体３の背面側（観察者Ｐとは反対側）には、回路基板２とカバー１が、そのフレーム体３の前面側（観察者Ｐ側）には、表示板４と見返し板５とが、その内部には導光体７が位置している。   This frame body 3 is made of, for example, milky white synthetic resin, and each part product including a circuit board 2, a display board 4, a light guide body 7, and a turn-back board 5 that support a stepping motor 6 to which a cover 1 and a pointer 8 are attached. It is a skeletal component that connects the speedometer SP (mainly composed of the stepping motor 6, the display board 4, and the pointer 8) and the display unit 9, and the back side of the frame body 3 (opposite to the observer P). The circuit board 2 and the cover 1 are located on the front side, the display plate 4 and the facing plate 5 are located on the front side (observer P side) of the frame body 3, and the light guide 7 is located inside the display board 4. ing.

さらにこのフレーム体３は、骨格部品としての機能以外にも、回路基板２上に設けられた光源Ｌの光を指針８及び表示板４に導く反射部材としての機能も有している。   Further, the frame body 3 has a function as a reflecting member for guiding the light of the light source L provided on the circuit board 2 to the pointer 8 and the display board 4 in addition to the function as a skeleton part.

表示板４は、例えば透光性合成樹脂シートにスクリーン印刷により指針８の指示対象となる指標部４１を形成した印刷表示板からなり、この指標部４１は、光源Ｌからの光で発光するように、透光性に形成されている。   The display board 4 is formed of a printed display board in which an index portion 41 to be indicated by the pointer 8 is formed by screen printing on a translucent synthetic resin sheet, for example, and the index portion 41 emits light by light from the light source L. In addition, it is formed to be translucent.

見返し板５は、表示板４及び表示器ユニット９の周囲を覆う遮光性合成樹脂部材からなる。   The facing plate 5 is made of a light-shielding synthetic resin member that covers the periphery of the display plate 4 and the display unit 9.

ステッピングモータ６は、回路基板２の背面側に装着され、その指針軸６１は、回路基板２を貫通して観察者側に延びている。   The stepping motor 6 is mounted on the back side of the circuit board 2, and the pointer shaft 61 extends through the circuit board 2 to the viewer side.

導光体７は、透光性合成樹脂からなり、光源Ｌからの光を表示板４及び指針８に導くものである。   The light guide 7 is made of translucent synthetic resin and guides light from the light source L to the display plate 4 and the pointer 8.

表示器ユニット９は、液晶表示パネル９１と、第１のケース９２と、第２のケース９３と、発光手段９４とを備えている。   The display unit 9 includes a liquid crystal display panel 91, a first case 92, a second case 93, and a light emitting means 94.

液晶表示パネル９１は、車両情報として、各種計測情報、警告情報、メッセージ情報、経路案内情報等、任意の情報を表示する。   The liquid crystal display panel 91 displays arbitrary information such as various measurement information, warning information, message information, and route guidance information as vehicle information.

第１のケース９２は、遮光性の合成樹脂からなり、前方（観察者Ｐ側）及び背後（観察者Ｐとは反対側）に開口し、前方の開口から液晶表示パネル９１が露出するように液晶表示パネル９１を収納している。   The first case 92 is made of a light-shielding synthetic resin and opens forward (observer P side) and behind (opposite the viewer P), so that the liquid crystal display panel 91 is exposed from the front opening. A liquid crystal display panel 91 is accommodated.

第２のケース９３は、例えば熱伝導性の良好なアルミニウムからなり、冷却ユニット１０の後述する伝熱部材（第１の伝熱部材）に熱を伝える第２の伝熱部材を構成するもので、第１のケース９２の背後側を覆っている。また第２のケース９３は、その端部にフレーム体３の第２の壁部３２に沿って「Ｌ」字状に屈曲して延びる第１の伝熱性取付部９５が形成され、この第１の伝熱性取付部９５には第１の取付孔３３に対応する第２の取付孔９６が設けられている。   The second case 93 is made of aluminum having good thermal conductivity, for example, and constitutes a second heat transfer member that transfers heat to a heat transfer member (first heat transfer member) described later of the cooling unit 10. The rear side of the first case 92 is covered. The second case 93 is formed with a first heat transfer attachment portion 95 that is bent and extends in an “L” shape along the second wall portion 32 of the frame body 3 at the end thereof. The heat transfer mounting portion 95 is provided with a second mounting hole 96 corresponding to the first mounting hole 33.

発光手段９４は、液晶表示パネル９１に沿って延びる透光性合成樹脂材料からなるライトガイド９７と、このライトガイド９７に光を供給して面発光させる例えば発光ダイオードからなる発光素子９８と、この発光素子９８とライトガイド９７とを収納するライトケース９９とから構成され、液晶表示パネル９１と第２のケース９３との間に配置されている。なおライトケース９９に第１の伝熱性取付部を形成することで、第２の伝熱部材を構成してもよい。   The light emitting means 94 includes a light guide 97 made of a translucent synthetic resin material extending along the liquid crystal display panel 91, a light emitting element 98 made of, for example, a light emitting diode for supplying light to the light guide 97 to cause surface emission, A light case 99 that houses the light emitting element 98 and the light guide 97 is disposed between the liquid crystal display panel 91 and the second case 93. In addition, you may comprise a 2nd heat-transfer member by forming the 1st heat-transfer attachment part in the light case 99. FIG.

なおこの場合、発光素子９８は、ライトケース９９との間に配置された例えば図示しないフレキシブルプリント基板（ＦＰＣ）を通じて駆動が行われる。またライトケース９９も第２のケース９３と同じく、例えば熱伝導性の良好なアルミニウムからなり、発光素子９８もしくはその駆動回路が発する熱をライトケース９９に伝達する。   In this case, the light emitting element 98 is driven through a flexible printed circuit board (FPC) (not shown) disposed between the light case 99 and the like. Similarly to the second case 93, the light case 99 is made of, for example, aluminum having good thermal conductivity, and transmits heat generated by the light emitting element 98 or its drive circuit to the light case 99.

冷却ユニット１０は、ヒートシンク（放熱部材）１０１と、このヒートシンク１０１に熱を伝える伝熱部材（第１の伝熱部材）１０２とで構成されている。   The cooling unit 10 includes a heat sink (heat radiating member) 101 and a heat transfer member (first heat transfer member) 102 that transfers heat to the heat sink 101.

ヒートシンク１０１は、熱放散性の良好な金属材料からなり、複数枚の放熱フィンを備えカバー１の外側に配置される。   The heat sink 101 is made of a metal material having good heat dissipation, and includes a plurality of heat radiation fins and is disposed outside the cover 1.

伝熱部材１０２は、ヒートシンク（放熱部材）１０１、第２のケース９３よりも伝熱効率の高いヒートパイプからなり、内部には冷媒（例えば水）が封入されている。   The heat transfer member 102 is composed of a heat pipe having higher heat transfer efficiency than the heat sink (heat radiating member) 101 and the second case 93, and a refrigerant (for example, water) is sealed inside.

この伝熱部材１０２のヒートシンク（放熱部材）１０１側端部は、ヒートシンク（放熱部材）１０１に溶接接合され、また第２のケース９３側端部（発光手段９４側端部）には、金属板からなる第２の伝熱性取付部１０３が設けられ、この第２の伝熱性取付部１０３には、第１，第２の取付孔３３，９６に対応する第３の取付孔１０４が形成されている。   The end of the heat transfer member 102 on the heat sink (heat radiating member) 101 side is welded to the heat sink (heat radiating member) 101, and the end of the second case 93 side (end on the light emitting means 94 side) is a metal plate. The second heat transfer mounting portion 103 is provided, and the second heat transfer mounting portion 103 is formed with a third mounting hole 104 corresponding to the first and second mounting holes 33 and 96. Yes.

次に図４に基づいて表示器ユニット９及び冷却ユニット１０の組み付けを説明する。   Next, the assembly of the display unit 9 and the cooling unit 10 will be described with reference to FIG.

ます予め、組み付けておいた速度計ＳＰの前方側に表示器ユニット９を配置し，第２の壁部３２に第１の伝熱性取付部９５を重ねて第１，第２の取付孔３３，９６どうしを位置合わせする。この際、表示器ユニット９の図示しない箇所をネジ等によりフレーム体３に固定してもよい。   The display unit 9 is disposed in front of the speedometer SP that has been assembled in advance, and the first and second mounting holes 33 are overlapped with the first heat transfer mounting portion 95 on the second wall portion 32. Align 96s. At this time, a portion (not shown) of the display unit 9 may be fixed to the frame body 3 with screws or the like.

次に第２の壁部３２の外側から矢印に従って、冷却ユニット１０をスライド移動し、第２の伝熱性取付部１０３を第１の伝熱性取付部９５に重ねて第３の取付孔１０４を第１，第２の取付孔３３，９６に位置合わせする。   Next, the cooling unit 10 is slid in accordance with the arrow from the outside of the second wall portion 32, and the second heat transfer attachment portion 103 is overlapped with the first heat transfer attachment portion 95 so that the third attachment hole 104 is formed in the first attachment hole 104. Align to the first and second mounting holes 33 and 96.

最後に図４中、第２の壁部３２の外側から矢印方向に沿って第１，第２，第３の取付孔３３，９６，１０４に固定部材であるネジＳを螺着挿入することにより第１の伝熱性取付部９５と第２の伝熱性取付部１０３とを密着状態で第２の壁部３３に取付固定する。またこれを併せてヒートシンク１０１の所要箇所をカバー１にネジ止めする（図示しない）。   Finally, in FIG. 4, screws S as fixing members are screwed into the first, second, and third mounting holes 33, 96, and 104 along the direction of the arrow from the outside of the second wall portion 32. The first heat transfer attachment portion 95 and the second heat transfer attachment portion 103 are attached and fixed to the second wall portion 33 in a close contact state. At the same time, a required portion of the heat sink 101 is screwed to the cover 1 (not shown).

これにより表示器ユニット９及び冷却ユニット１０が速度計ＳＰの前方に取付固定される。   Thereby, the display unit 9 and the cooling unit 10 are attached and fixed in front of the speedometer SP.

発光手段９４に生じた熱は、ライトケース９９、第２のケース９３、第１の伝熱性取付部９５、第２の伝熱性取付部１０３、伝熱部材１０２を介してヒートシンク１０１に伝えられ、外部雰囲気中に放散される。   The heat generated in the light emitting means 94 is transmitted to the heat sink 101 via the light case 99, the second case 93, the first heat transfer mounting portion 95, the second heat transfer mounting portion 103, and the heat transfer member 102. Dissipated into the external atmosphere.

以上のように本実施形態によれば、第１の所定情報として車速を観察者Ｐに表示する速度計（第１の表示手段）ＳＰと、第２の所定情報として各種車両情報を観察者Ｐに表示する表示器ユニット（第２の表示手段）９と、この表示器ユニット９に組み込まれる液晶表示パネル９１を照明する発光手段９４と、観察者Ｐに対向するように延在する第１の壁部３１とこの第１の壁部３１の周囲を取り巻く周壁からなる第２の壁部３２とを有し速度計ＳＰと表示器ユニット９とを結合するフレーム体３と、第１の壁部３１の観察者Ｐ側とは反対側に配置されるヒートシンク（放熱部材）１０１と、発光手段９４にて発生した熱をヒートシンク１０１に伝える伝熱部材１０２と、を備えてなる表示装置において、伝熱部材１０２が第２の壁部３２の外側を経て発光手段９４と放熱部材１０１の各々に接続固定されてなることにより、フレーム体や回路基板を分割したり、これらに大型の貫通孔を形成する必要がなく、しかもフレーム体３（表示装置）の外部にて冷却モジュールと表示ユニットとを接続できるため、伝熱部材と放熱部材とを含む冷却モジュールを組み込むにあたり、フレーム体や回路基板に対する影響を小さくし、しかも組み付け性を良好にすることができる。   As described above, according to the present embodiment, a speedometer (first display means) SP that displays the vehicle speed on the observer P as the first predetermined information, and various vehicle information as the second predetermined information on the observer P. Display unit (second display means) 9, a light emitting means 94 for illuminating a liquid crystal display panel 91 incorporated in the display unit 9, and a first extending so as to face the observer P. A frame body 3 having a wall portion 31 and a second wall portion 32 made of a peripheral wall surrounding the periphery of the first wall portion 31 and connecting the speedometer SP and the display unit 9, and a first wall portion In a display device comprising a heat sink (heat radiating member) 101 disposed on the side opposite to the viewer P side of 31 and a heat transfer member 102 for transferring heat generated by the light emitting means 94 to the heat sink 101, The heat member 102 is outside the second wall 32. In this way, it is not necessary to divide the frame body and the circuit board and to form a large through-hole in the frame body 3 (display device). ), The cooling module and display unit can be connected externally, so when incorporating a cooling module that includes a heat transfer member and a heat dissipation member, the effect on the frame body and circuit board should be reduced, and the ease of assembly can be improved. Can do.

また本実施形態では、第２の壁部３２に第１の取付孔３３を設け、表示器ユニット（第２の表示手段）９に熱を伝熱部材１０２に伝える第２のケース（第２の伝熱部材）９３を設け、この第２のケース９３に第１の取付孔３３に対応する第２の取付孔９６を有する第１の伝熱性取付部９５を連続形成し、伝熱部材１０２の発光手段９４側端部に第２の取付孔９６に対応する第３の取付孔１０４を有する第２の伝熱性取付部１０３を設け、第１の伝熱性取付部９５と第２の伝熱性取付部１０３と第２の壁部３２とを重ねて第１，第２，第３の取付孔３３，９６，１０４を位置合わせした状態で、第２の壁部３２の外側から第１，第２，第３の取付孔３３，９６，１０４にネジ（固定部材）Ｓを挿入することにより第１の伝熱性取付部９５と第２の伝熱性取付部と１０３を密着状態で第２の壁部３２に取付固定してなることにより、第１，第２の伝熱性取付部９５，１０３どうしの密着性を確保して伝熱効率を高めながら、両伝熱部材１０２，９３をフレーム体３に取付固定することができる。   In the present embodiment, the second wall portion 32 is provided with a first mounting hole 33, and a second case (second case) for transferring heat to the display unit (second display means) 9 to the heat transfer member 102. (Heat transfer member) 93 is provided, and a first heat transfer attachment portion 95 having a second attachment hole 96 corresponding to the first attachment hole 33 is continuously formed in the second case 93, and the heat transfer member 102 A second heat-conductive mounting portion 103 having a third mounting hole 104 corresponding to the second mounting hole 96 is provided at the light emitting means 94 side end, and the first heat-conductive mounting portion 95 and the second heat-conductive mounting portion are provided. In a state where the first, second, and third mounting holes 33, 96, and 104 are aligned by overlapping the portion 103 and the second wall portion 32, the first and second portions are arranged from the outside of the second wall portion 32. , By inserting a screw (fixing member) S into the third mounting holes 33, 96, 104, the second heat transfer mounting portion 95 and the second By attaching and fixing the heat conductive attachment portion 103 and the second wall portion 32 in close contact with each other, the adhesion between the first and second heat conductive attachment portions 95 and 103 is ensured and the heat transfer efficiency is increased. However, the heat transfer members 102 and 93 can be attached and fixed to the frame body 3.

また本実施形態では、第１の伝熱性取付部９５と第２の伝熱性取付部１０３とが互いに平行に延びるように形成して、両者を面接触させたことにより、伝熱効率を向上させることができる。   Further, in the present embodiment, the first heat transfer attachment portion 95 and the second heat transfer attachment portion 103 are formed so as to extend in parallel with each other, and both are brought into surface contact, thereby improving the heat transfer efficiency. Can do.

なお本実施形態では、第１の伝熱性取付部９５と第２の伝熱性取付部１０３と第２の壁部３２とを重ねて第１，第２，第３の取付孔３３，９６，１０４を位置合わせした状態で、第２の壁部３２の外側から内側（図中、左右方向）に向けて第１，第２，第３の取付孔３３，９６，１０４にネジＳを挿入する例を示したが、第２，第３の実施形態として、図５、図６に示すように、第２の壁部３２の外側で、第２の壁部３２の延長方向（図中、上下方向）に沿って第１，第２，第３の取付孔３３，９６，１０４にネジＳを挿入する構成を採用してもよく、第２の壁部３２の外側にてネジＳによる組み付けが可能となっていれば、前記第１の実施形態と同様の効果を期待できる。   In the present embodiment, the first, second, and third attachment holes 33, 96, and 104 are overlapped with the first heat transfer attachment portion 95, the second heat transfer attachment portion 103, and the second wall portion 32. An example in which the screw S is inserted into the first, second, and third mounting holes 33, 96, and 104 from the outer side of the second wall portion 32 toward the inner side (left and right direction in the drawing) in a state where the positions of the second wall portion 32 are aligned. As shown in FIGS. 5 and 6, as shown in FIGS. 5 and 6, in the second and third embodiments, the extension direction of the second wall portion 32 (vertical direction in the figure) is provided outside the second wall portion 32. ) May be adopted in which the screw S is inserted into the first, second, and third mounting holes 33, 96, and 104, and assembly with the screw S is possible outside the second wall portion 32. If so, the same effect as in the first embodiment can be expected.

図７は本発明の第４の実施形態を示す要部分解斜視図であり、本実施形態では、フレーム体３に伝熱部材１０２及び第２の伝熱性取付部１０３を収容する凹部３４を形成したものである。凹部３４は、第２の壁部３２によって包囲され、第２の壁部３２の第２，第３の取付孔９６，１０４に対応する位置には、第１の取付孔３３が形成されている。   FIG. 7 is an exploded perspective view showing a main part of the fourth embodiment of the present invention. In this embodiment, the frame body 3 is formed with a recess 34 for accommodating the heat transfer member 102 and the second heat transfer mounting part 103. It is a thing. The concave portion 34 is surrounded by the second wall portion 32, and a first attachment hole 33 is formed at a position corresponding to the second and third attachment holes 96 and 104 of the second wall portion 32. .

このようにフレーム体３に凹部３４を形成し、伝熱部材１０２及び第２の伝熱性取付部１０３を収容したことにより、前記第１の実施形態と同様の効果に加え、伝熱部材１０２がフレーム体３の第２の壁部３２の外側に出っ張ることを防止し、構成のコンパクト化を達成することができる。   Thus, by forming the recessed part 34 in the flame | frame body 3, and accommodating the heat-transfer member 102 and the 2nd heat-transfer attachment part 103, in addition to the effect similar to the said 1st Embodiment, the heat-transfer member 102 It is possible to prevent the frame body 3 from protruding to the outside of the second wall portion 32 and to achieve a compact configuration.

なお本実施形態では、冷却ユニット１０として、ヒートシンク１０１と伝熱部材１０２と第２の伝熱性取付部１０３とが、溶接接合等により予め一体化されたものを使用したが、別々に用意したヒートシンク１０１、伝熱部材１０２、第２の伝熱性取付部１０３を速度計ＳＰ（表示装置）に組み付けてもよい。   In this embodiment, as the cooling unit 10, the heat sink 101, the heat transfer member 102, and the second heat transfer mounting portion 103 are integrated in advance by welding or the like. 101, the heat transfer member 102, and the second heat transfer mounting portion 103 may be assembled to the speedometer SP (display device).

本発明の第１の実施形態による表示装置の正面図。1 is a front view of a display device according to a first embodiment of the present invention. 図１のＡ−Ａ断面図。AA sectional drawing of FIG. 図１の要部拡大図。The principal part enlarged view of FIG. 図１の分解断面図。The exploded sectional view of FIG. 本発明の第２の実施形態を示す要部断面図。The principal part sectional view showing the 2nd embodiment of the present invention. 本発明の第３の実施形態を示す要部断面図。Sectional drawing which shows the principal part which shows the 3rd Embodiment of this invention. 本発明の第４の実施形態を示す要部分解斜視図。The principal part disassembled perspective view which shows the 4th Embodiment of this invention.

符号の説明Explanation of symbols

１ カバー
２ 回路基板
３ フレーム体
４ 表示板
５ 見返し板
６ ステッピングモータ
７ 導光体
８ 指針
９ 表示器ユニット
１０ 冷却ユニット
３１ 第１の壁部
３２ 第２の壁部
３３ 第１の取付孔
３４ 凹部
４１ 指標部
６１ 指針軸
９１ 液晶表示パネル
９２ 第１のケース
９３ 第２のケース
９４ 発光手段
９５ 第１の伝熱性取付部
９６ 第２の取付孔
９７ ライトガイド
９８ 発光素子
９９ ライトケース
１０１ ヒートシンク（放熱部材）
１０２ 伝熱部材（第１の伝熱部材）
１０３ 第２の伝熱性取付部
１０４ 第３の取付孔
Ｌ 光源
Ｐ 観察者
ＦＵ 燃料計
ＳＰ 速度計
ＴＡ エンジン回転計
ＴＥ 水温 DESCRIPTION OF SYMBOLS 1 Cover 2 Circuit board 3 Frame body 4 Display board 5 Turn-off board 6 Stepping motor 7 Light guide body 8 Pointer 9 Display unit 10 Cooling unit 31 1st wall part 32 2nd wall part 33 1st attachment hole 34 Recessed part 41 Index Unit 61 Pointer Shaft 91 Liquid Crystal Display Panel 92 First Case 93 Second Case 94 Light Emitting Means 95 First Heat Transfer Mounting Portion 96 Second Mounting Hole 97 Light Guide 98 Light Emitting Element 99 Light Case 101 Heat Sink (Heat Dissipation) Element)
102 Heat transfer member (first heat transfer member)
103 2nd heat conductive attachment part 104 3rd attachment hole L Light source P Observer FU Fuel gauge SP Speedometer TA Engine tachometer TE Water temperature

Claims (4)

第１の所定情報を観察者に表示する第１の表示手段と、
第２の所定情報を前記観察者に表示する第２の表示手段と、
この第２の表示手段を照明する発光手段と、
前記観察者に対向するように延在する第１の壁部とこの第１の壁部の周囲を取り巻く周壁からなる第２の壁部とを有し前記第１，第２の表示手段を結合するフレーム体と、
前記第１の壁部の前記観察者側とは反対側に配置される放熱部材と、
前記発光手段にて発生した熱を放熱部材に伝える伝熱部材と、
を備えてなる表示装置において、
前記伝熱部材は前記第２の壁部の外側を経て前記発光手段と前記放熱部材の各々に接続固定されてなることを特徴とする表示装置。 First display means for displaying first predetermined information to an observer;
Second display means for displaying second predetermined information to the observer;
A light emitting means for illuminating the second display means;
The first and second display means are coupled to each other having a first wall portion extending so as to face the observer and a second wall portion comprising a peripheral wall surrounding the first wall portion. A frame body,
A heat dissipating member disposed on the side opposite to the observer side of the first wall,
A heat transfer member that transfers heat generated by the light emitting means to the heat dissipation member;
In a display device comprising:
The display device, wherein the heat transfer member is connected and fixed to each of the light emitting means and the heat radiating member via the outside of the second wall portion. 前記第２の壁部に第１の取付孔を設け、
前記第２の表示手段に前記熱を前記伝熱部材に伝える第２の伝熱部材を設け、
この第２の伝熱部材に前記第１の取付孔に対応する第２の取付孔を有する第１の伝熱性取付部を連続形成し、
前記伝熱部材の前記発光手段側端部に前記第２の取付孔に対応する第３の取付孔を有する第２の伝熱性取付部を設け、
前記第１の伝熱性取付部と第２の伝熱性取付部と前記第２の壁部とを重ねて前記第１，第２，第３の取付孔を位置合わせした状態で、前記第２の壁部の外側からもしくは前記第２の壁部の外側にて前記第１，第２，第３の取付孔に固定部材を挿入することにより前記第１の伝熱性取付部と第２の伝熱性取付部とを密着状態で前記第２の壁部に取付固定してなることを特徴とする請求項１記載の表示装置。 Providing a first mounting hole in the second wall;
A second heat transfer member for transferring the heat to the heat transfer member is provided in the second display means;
The second heat transfer member is continuously formed with a first heat transfer attachment portion having a second attachment hole corresponding to the first attachment hole,
A second heat transfer attachment portion having a third attachment hole corresponding to the second attachment hole at the light emitting means side end of the heat transfer member;
In the state where the first, second, and third mounting holes are aligned with the first heat transfer mounting portion, the second heat transfer mounting portion, and the second wall portion overlapped, By inserting a fixing member into the first, second, and third attachment holes from the outside of the wall portion or outside the second wall portion, the first heat transfer attachment portion and the second heat transfer property The display device according to claim 1, wherein the attachment portion is attached and fixed to the second wall portion in a close contact state. 前記第１の伝熱性取付部と第２の伝熱性取付部とが平行に延びることを特徴とする請求項１記載の表示装置。 The display device according to claim 1, wherein the first heat transfer attachment portion and the second heat transfer attachment portion extend in parallel. 前記フレーム体に前記伝熱部材を収容する凹部を有することを特徴とする請求項１記載の表示装置。 The display device according to claim 1, wherein the frame body has a recess for accommodating the heat transfer member.
JP2007249130A 2007-09-26 2007-09-26 Display device Pending JP2009079993A (en)

Priority Applications (2)

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JP2007249130A JP2009079993A (en) 2007-09-26 2007-09-26 Display device
PCT/JP2008/066699 WO2009041317A1 (en) 2007-09-26 2008-09-17 Display device

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CN113990179A (en) * 2021-10-11 2022-01-28 惠州市德赛西威汽车电子股份有限公司 Backlight structure of instrument indicating character
CN114093254A (en) * 2021-10-21 2022-02-25 惠州市德赛西威汽车电子股份有限公司 Backlight reflector structure of instrument

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JP2011123017A (en) * 2009-12-14 2011-06-23 Yazaki Corp Heat radiation structure of meter device

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