JP2008310185A - Display device - Google Patents

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Publication number
JP2008310185A
JP2008310185A JP2007159347A JP2007159347A JP2008310185A JP 2008310185 A JP2008310185 A JP 2008310185A JP 2007159347 A JP2007159347 A JP 2007159347A JP 2007159347 A JP2007159347 A JP 2007159347A JP 2008310185 A JP2008310185 A JP 2008310185A
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Prior art keywords
guide plate
light guide
light
dial
plate
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JP2007159347A
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JP5004222B2 (en
Inventor
Masanobu Terao
雅伸 寺尾
Takashi Hara
敬 原
Yuji Okamoto
勇司 岡元
Arihiko Yamamoto
有彦 山本
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Toyota Auto Body Co Ltd
Toyota Motor Corp
Yazaki Corp
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Toyota Auto Body Co Ltd
Toyota Motor Corp
Yazaki Corp
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Priority to JP2007159347A priority Critical patent/JP5004222B2/en
Publication of JP2008310185A publication Critical patent/JP2008310185A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device achieving improvement of design by clearly shining the peripheral edge of a light guide plate. <P>SOLUTION: The display device having a transparent character plate 51 having prescribed design, the light guide plate 52 arranged on the front face of the transparent character plate 51, and a light source for the light guide plate for making light incident on the light guide plate 52 is provided with a white layer 59 for printing on a part facing the outer peripheral edge part of the light guide plate 52 on the front face of the transparent character plate 51. In addition, grain finish is applied on the side face of the light guide plate 52 along the white printing layer 59. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、表示装置に係り、特に、所定意匠が設けられた文字板と、文字板の正面に配置された導光板と、導光板に対して光を入射する光源と、を有する表示装置に関するものである。   The present invention relates to a display device, and more particularly, to a display device having a dial plate provided with a predetermined design, a light guide plate arranged in front of the dial plate, and a light source that makes light incident on the light guide plate. Is.

上述した表示装置として、例えば、特許文献1に記載された計器が知られている。図6に示すように、計器は、遮光板51と、遮光板51の表面に沿って回動する指針31と、この指針31によって指示される意匠が形成された円弧状の導光板52と、を有している。この導光板52の周方向の両端には、背面に向かって突出する光導入部52Aが設けられている。そして、この光導入部52Aと対向する位置に導光板用光源L3が配置されている。この構成によれば、導光板用光源L3が発光すると導光板用光源L3からの光が光導入部52Aから導光板52内に入射される。導光板52内に入射された光は、導光板52の正面と背面とで反射を繰り返しながら全体に広がり、導光板52全体が照明される。   As the display device described above, for example, an instrument described in Patent Document 1 is known. As shown in FIG. 6, the instrument includes a light shielding plate 51, a pointer 31 that rotates along the surface of the light shielding plate 51, an arc-shaped light guide plate 52 in which a design indicated by the pointer 31 is formed, have. At both ends in the circumferential direction of the light guide plate 52, light introducing portions 52A that protrude toward the back surface are provided. And the light source L3 for light guide plates is arrange | positioned in the position facing this light introduction part 52A. According to this configuration, when the light source L3 for the light guide plate emits light, the light from the light source L3 for the light guide plate enters the light guide plate 52 from the light introducing portion 52A. The light incident on the light guide plate 52 spreads throughout the light guide plate 52 while being repeatedly reflected on the front and back surfaces of the light guide plate 52, and the entire light guide plate 52 is illuminated.

また、導光板52の正面の外周には、外周から内周に向かうに従って正面側に近づくテーパ面52Bが設けられており、そのテーパ面52Bにはシボ加工が施されている。また、導光板52正面の内周には、外周から内周に向かうに従って背面側に近づくテーパ面52Cが設けられており、そのテーパ面52Cにはシボ加工が施されている。このように、テーパ面52B、52Cにシボ加工を施すことにより、テーパ面52B、52Cを光らせて、導光板52の外周縁、内周縁が光っているように視認させることができる。   Moreover, the taper surface 52B which approaches a front side is provided in the outer periphery of the front surface of the light-guide plate 52 as it goes to an inner periphery from an outer periphery, The embossing is given to the taper surface 52B. In addition, a tapered surface 52C that approaches the back side as it goes from the outer periphery to the inner periphery is provided on the inner periphery of the front surface of the light guide plate 52, and the tapered surface 52C is subjected to a textured process. As described above, the tapered surfaces 52 </ b> B and 52 </ b> C are subjected to the graining process so that the tapered surfaces 52 </ b> B and 52 </ b> C can be shined so that the outer peripheral edge and the inner peripheral edge of the light guide plate 52 are visible.

しかしながら、上述した従来の計器では、テーパ面52B、52Cから出射される光は、テーパ面52B、52Cに施されたシボ加工によって拡散されるため、導光板52の外周縁又は内周縁がクリアに光らず、ぼんやり光っているように視認される。このため、導光板52が視認されにくく意匠性に欠けるという問題もあった。
特開2007−17167号公報
However, in the conventional instrument described above, the light emitted from the tapered surfaces 52B and 52C is diffused by the embossing applied to the tapered surfaces 52B and 52C, so the outer peripheral edge or inner peripheral edge of the light guide plate 52 is clear. It is visually recognized as if it is not shining. For this reason, there also existed a problem that the light-guide plate 52 was hard to be visually recognized and lacked in design property.
JP 2007-17167 A

そこで、本発明は、上記のような問題点に着目し、導光板の周縁をクリアに光らすことにより、導光板の視認性を上げて意匠性の向上を図った表示装置を提供することを課題とする。   Accordingly, the present invention focuses on the above problems and provides a display device that improves the design by improving the visibility of the light guide plate by clearly illuminating the periphery of the light guide plate. And

上記課題を解決するためになされた請求項1記載の発明は、所定意匠が設けられた文字板と、前記文字板の正面に配置された導光板と、前記導光板に対して光を入射する光源と、を有する表示装置において、前記文字板の正面において前記導光板の縁部に対向する部分に前記文字板の他の領域よりも反射率の高い高反射層が設けられていることを特徴とする表示装置に存する。   The invention according to claim 1, which has been made in order to solve the above-mentioned problem, makes a light incident on the dial plate provided with a predetermined design, a light guide plate arranged in front of the dial plate, and the light guide plate. A display device having a light source, wherein a highly reflective layer having a higher reflectance than other regions of the dial is provided in a portion facing the edge of the light guide plate in front of the dial. It exists in the display device.

請求項1記載の発明によれば、文字板の正面において導光板の縁部に対向する部分に高反射層が設けられているので、導光板に入射された光が高反射層で反射されて運転者視点に届くため、クリアに導光板の縁部を光らせることができる。   According to the first aspect of the present invention, since the high reflection layer is provided in the portion facing the edge of the light guide plate in front of the dial, the light incident on the light guide plate is reflected by the high reflection layer. Since it reaches the driver's viewpoint, the edge of the light guide plate can be clearly illuminated.

請求項2記載の発明は、前記高反射層に沿った前記導光板の側面にシボ加工が施されていることを特徴とする請求項1に記載の表示装置に存する。   The invention according to claim 2 resides in the display device according to claim 1, wherein the side surface of the light guide plate along the highly reflective layer is subjected to a texture.

請求項2記載の発明によれば、導光板内を導光する光が、導光板のシボ加工が施された側面によって拡散されて出射されるため導光板の側面が光輝する。また、高反射層で反射された光の一部が導光板の側面に向かうため、導光板の側面がさらに光輝する。   According to the second aspect of the present invention, since the light guided through the light guide plate is diffused and emitted by the side surface of the light guide plate that has been subjected to the textured processing, the side surface of the light guide plate shines. Moreover, since a part of the light reflected by the highly reflective layer goes to the side surface of the light guide plate, the side surface of the light guide plate further shines.

請求項3記載の発明は、前記高反射層が、前記光源から遠ざかるに従って幅が太くなるように又は前記光源から遠ざかるに従って密度が濃くなるように、設けられていることを特徴とする請求項1又は2に記載の表示装置に存する。   The invention according to claim 3 is characterized in that the high reflection layer is provided such that the width increases as the distance from the light source increases, or the density increases as the distance from the light source increases. Or it exists in the display apparatus of 2.

請求項3記載の発明によれば、光源から遠ざかって光が届きにくい場所ほど高反射層の幅が太く又は密度を濃くして反射率を上げることができる。   According to the third aspect of the present invention, the reflectance can be increased by increasing the width of the high reflection layer or increasing the density as the distance from the light source that makes it difficult for light to reach.

以上説明したように請求項1記載の発明によれば、導光板に入射された光が高反射層で反射されて運転者視点に届くため、クリアに導光板の縁部を光らせることができるので、導光板の視認性を上げて意匠性の向上を図ることができる。   As described above, according to the first aspect of the present invention, since the light incident on the light guide plate is reflected by the high reflection layer and reaches the driver's viewpoint, the edge of the light guide plate can be clearly illuminated. In addition, the visibility of the light guide plate can be increased to improve the design.

請求項2記載の発明によれば、導光板内を導光する光が、導光板のシボ加工が施された側面によって拡散されて出射されるため導光板の側面が光輝する。また、高反射層で反射された光の一部が導光板の側面に向かうため、導光板の側面がさらに光輝するので、より一層、意匠性の向上を図ることができる。   According to the second aspect of the present invention, since the light guided through the light guide plate is diffused and emitted by the side surface of the light guide plate that has been subjected to the textured processing, the side surface of the light guide plate shines. In addition, since a part of the light reflected by the highly reflective layer is directed to the side surface of the light guide plate, the side surface of the light guide plate is further brilliant, so that the design can be further improved.

請求項3記載の発明によれば、光源から遠ざかって光が届きにくい場所ほど高反射層の幅が太く又は密度を濃くして反射率を上げることができるので、導光板の縁部を均一に光らせることができる。   According to the third aspect of the present invention, as the distance from the light source that is difficult for light to reach can increase the reflectance by increasing the width of the high reflection layer or increasing the density, the edge of the light guide plate can be made uniform. Can shine.

以下、本発明の一実施の形態を図1〜図5に基づいて説明する。同図に示すように、車両用のコンビネーションメータ20は、自動車等の移動体に搭載されて、この移動体の乗務員に対して該移動体の状況を表示する装置である。コンビネーションメータ20には、図1に示すように、車両の速度を指示する速度計21(表示装置)と、車両のエンジン回転数を指示する回転計22(表示装置)と、燃料残量を指示する残量計23と、走行距離や室外温度などを表示する液晶ディスプレイ(LCD)24と、ウォーニング25とが設けられている。   Hereinafter, an embodiment of the present invention will be described with reference to FIGS. As shown in the figure, a vehicle combination meter 20 is a device that is mounted on a moving body such as an automobile and displays the state of the moving body to a crew member of the moving body. As shown in FIG. 1, the combination meter 20 indicates a speedometer 21 (display device) for instructing the vehicle speed, a tachometer 22 (display device) for instructing the engine speed of the vehicle, and a fuel remaining amount. A fuel gauge 23, a liquid crystal display (LCD) 24 for displaying a travel distance, an outdoor temperature, and the like, and a warning 25 are provided.

コンビネーションメータ20は、速度計21、回転計22、残量計23、LCD24及びウォーニング25を収容するケーシング26(図2)と、ケーシング26の正面に取り付けられた見返し27(図1、図2)と、見返し27の正面に取り付けられた表ガラス28(図1)と、ケーシング26の背面側に設けられた裏カバー29(図2)と、を有している。   The combination meter 20 includes a casing 26 (FIG. 2) that houses a speedometer 21, a tachometer 22, a fuel gauge 23, an LCD 24, and a warning 25, and a turning 27 attached to the front of the casing 26 (FIGS. 1 and 2). And a front glass 28 (FIG. 1) attached to the front of the facing 27, and a back cover 29 (FIG. 2) provided on the back side of the casing 26.

上記見返し27は、上記速度計21、回転計22、残量計23、LCD24及びウォーニング25に対向する部分に開口が設けられ、ケーシング26内に収容された図2に示す配線板30やムーブメント31などを隠す。   The payback 27 is provided with an opening at a portion facing the speedometer 21, tachometer 22, fuel gauge 23, LCD 24 and warning 25, and the wiring board 30 and movement 31 shown in FIG. 2 housed in the casing 26. Hide etc.

次に、上記速度計21、回転計22の構成について説明する。本実施形態では、速度計21及び回転計22は、速度計用指針32及び回転計用指針33と、複数の指針用光源L1と、複数の文字板用光源L2と、複数の導光板用光源L3(=光源)と、文字板40と、立体文字板50と、見返し27に設けたホルダによって速度計用指針32及び回転計用指針33の回転軸の正面側に保持されたLCD60と、を有している。   Next, the configuration of the speedometer 21 and the tachometer 22 will be described. In the present embodiment, the speedometer 21 and the tachometer 22 are a speedometer pointer 32 and a tachometer pointer 33, a plurality of pointer light sources L1, a plurality of dial plate light sources L2, and a plurality of light guide plate light sources. L3 (= light source), dial 40, three-dimensional dial 50, and LCD 60 held on the front side of the rotation shaft of the speedometer pointer 32 and the tachometer pointer 33 by the holder provided on the turn-back 27. Have.

上記速度計用指針32、回転計用指針33は、図2に示すように、ムーブメント31の回転軸の軸受けと、後述する指針本体35を保持する保持部と、が一体に設けられた指針袴34と、該指針袴34に保持された導光部材から構成される指針本体35と、から構成されている。   As shown in FIG. 2, the speedometer pointer 32 and the tachometer pointer 33 are formed by integrating a bearing of a rotation shaft of the movement 31 and a holding portion for holding a pointer main body 35 described later. 34, and a pointer main body 35 including a light guide member held by the pointer rod 34.

上記複数の指針用光源L1は、図2に示すように、ムーブメント31の回転軸を囲むように配線板30上に配置されている。これにより、指針用光源L1が発光すると、指針用光源L1からの光が指針本体35に入射される。指針本体35に入射された光は、指針本体35全体に導光されて指針本体35全体が光輝する。上記複数の文字板用光源L2は、後述する文字板40の背面にある配線板30上に指針用光源L1を囲むように配置されている。上述した指針用光源L1と文字板用光源L2との間には、ケーシング26によって遮光壁が形成されており、指針用光源L1の光が文字板40の背面に入射したり、文字板用光源L2からの光が指針本体35に入射したりしないようになっている。上記導光板用光源L3については後述する。   The plurality of pointer light sources L1 are arranged on the wiring board 30 so as to surround the rotation shaft of the movement 31, as shown in FIG. Accordingly, when the pointer light source L1 emits light, the light from the pointer light source L1 is incident on the pointer main body 35. The light incident on the pointer main body 35 is guided to the entire pointer main body 35 so that the entire pointer main body 35 shines. The plurality of dial light sources L2 are arranged on the wiring board 30 on the back surface of the dial 40, which will be described later, so as to surround the pointer light source L1. A light shielding wall is formed by the casing 26 between the pointer light source L1 and the dial light source L2, and the light from the pointer light source L1 is incident on the back of the dial 40, or the dial light source. The light from L2 does not enter the pointer main body 35. The light guide plate light source L3 will be described later.

上記文字板40は、円盤状であり、その正面に遮光印刷層41が設けられている。遮光印刷層41は、例えば図1に示すように車両速度の単位を示す「km/m」や回転数の単位を示す「×1000rpm」といった意匠に相当する部分が除かれている。また、文字板40は、その背面に上記意匠の表示色に着色された透光性の表示色印刷層42が設けられている。これにより、文字板用光源L2からの光が文字板40の背面に入射されると、上記「km/h」や「×1000rpm」といった意匠が表示色印刷層42の表示色で光輝する。   The dial plate 40 has a disk shape, and a light-shielding print layer 41 is provided on the front surface thereof. For example, as shown in FIG. 1, the light-shielding print layer 41 has a portion corresponding to a design such as “km / m” indicating a unit of vehicle speed and “× 1000 rpm” indicating a unit of rotation speed. Further, the dial 40 is provided with a translucent display color printing layer 42 colored in the display color of the design on the back surface thereof. Thus, when the light from the dial light source L2 is incident on the back surface of the dial 40, the design such as “km / h” and “× 1000 rpm” shines in the display color of the display color printing layer 42.

次に、立体文字板50の構成について説明する。本実施形態では速度計21用の立体文字板50と回転計22用の立体文字板50とが一体に設けられている。立体文字板50は、上記文字板40の正面に配置され、図3に示すように、透明文字板51(=文字板)と、導光板52と、ベース53と、から構成されている。   Next, the configuration of the three-dimensional dial plate 50 will be described. In this embodiment, the three-dimensional dial plate 50 for the speedometer 21 and the three-dimensional dial plate 50 for the tachometer 22 are provided integrally. The three-dimensional dial plate 50 is disposed in front of the dial plate 40, and includes a transparent dial plate 51 (= dial plate), a light guide plate 52, and a base 53 as shown in FIG.

透明文字板51は、図3に示すように、速度計用指針32の回転軸を中心とした円弧状に設けられた速度計用文字板511と、回転計用指針33の回転軸を中心とした円弧状に設けられた回転計用文字板512と、から構成されている。上記透明文字板51には、図4及び図5に示すように、意匠に相当する部分が除かれた暗色系の遮光印刷層56(=遮光層)と、白色印刷層59(=高反射層)と、透明文字板51の正面を覆うハードコート層としてのUVクリア印刷層57とがこの順で正面に設けられ、上記意匠の表示色に着色された透光性の表示色印刷層58が背面に設けられている。速度計用文字板511の正面に設けられた遮光印刷層56は、速度を示す数字、目盛といった意匠に相当する部分が除かれていて、回転計用文字板512の正面に設けられた遮光印刷層56は、回転数を示す数字、目盛といった意匠に相当する部分が除かれている。   As shown in FIG. 3, the transparent dial 51 is centered on the rotation axis of the speedometer dial 511 provided in an arc shape around the rotation axis of the speedometer indicator 32 and the rotation axis of the tachometer indicator 33. And a dial for a tachometer 512 provided in a circular arc shape. As shown in FIGS. 4 and 5, the transparent dial 51 includes a dark-colored light-shielding printing layer 56 (= light-shielding layer) from which a portion corresponding to a design is removed, and a white printing layer 59 (= high-reflection layer). ) And a UV clear printing layer 57 as a hard coat layer covering the front surface of the transparent dial 51 is provided on the front surface in this order, and a translucent display color printing layer 58 colored in the display color of the design is provided. It is provided on the back. The light-shielding printing layer 56 provided on the front face of the speedometer dial plate 511 has a portion corresponding to a design such as a speed number and a scale removed, and the light-shielding printing layer provided on the front face of the speedometer dial plate 512. In the layer 56, a portion corresponding to a design such as a number indicating the number of rotations and a scale is removed.

上記白色印刷層59は、透明文字板51の外周縁部にライン状に設けられている。このライン状の白色印刷層59の幅及び印刷密度は例えば一定に設けられている。UVクリア印刷層57は、透明なUVインクを透明文字板51の正面に塗布した後、紫外線を照射して硬化させることにより形成されている。   The white print layer 59 is provided in a line shape on the outer peripheral edge of the transparent dial 51. The width and print density of the line-shaped white print layer 59 are, for example, constant. The UV clear printing layer 57 is formed by applying a transparent UV ink on the front surface of the transparent dial 51 and then irradiating it with ultraviolet rays and curing it.

上述した導光板52は、図3に示すように、上記透明文字板51の正面に配置されていて、例えば透明樹脂アクリルなどから形成されている。この導光板52は、速度計用文字板511の正面に設けられた速度計用導光板521と、回転計用文字板512の正面に設けられた回転計用導光板522とが一体に形成されている。上記速度計用導光板521は速度計用文字板511と同形に設けられ、回転計用導光板522は回転計用文字板512と同形に設けられている。即ち、導光板52と透明文字板51との外周縁部及び内周縁部の位置は一致する。よって、透明文字板51の外周縁部に設けられた白色印刷層59は、透明文字板51正面において導光板52の外周縁部に前後方向に対向する部分に設けられているともいえる。   As shown in FIG. 3, the light guide plate 52 described above is disposed in front of the transparent dial plate 51, and is made of, for example, transparent resin acrylic. The light guide plate 52 is integrally formed with a speedometer light guide plate 521 provided in front of the speedometer dial 511 and a tachometer light guide plate 522 provided in front of the tachometer dial 512. ing. The speedometer light guide plate 521 is provided in the same shape as the speedometer dial plate 511, and the tachometer light guide plate 522 is provided in the same shape as the tachometer dial plate 512. That is, the positions of the outer peripheral edge and the inner peripheral edge of the light guide plate 52 and the transparent dial 51 are the same. Therefore, it can be said that the white print layer 59 provided on the outer peripheral edge of the transparent dial 51 is provided on the front face of the transparent dial 51 at a portion facing the outer peripheral edge of the light guide plate 52 in the front-rear direction.

上記速度計用導光板521の周方向の両端には、背面側に向かって突出する一対の光導入部523が設けられている。上記回転計用導光板522の周方向の一端は、速度計用導光板521に連なっている。そして、回転計用導光板522の周方向の他端には、背面側に向かって突出する光導入部523が設けられている。図2に示すように、導光板用光源L3は、配線板30上の光導入部523と対向する位置に配置されている。また、白色印刷層59に沿った導光板52の外側面にはシボ加工Sが施されている。   At both ends in the circumferential direction of the speedometer light guide plate 521, a pair of light introducing portions 523 protruding toward the back side is provided. One end of the tachometer light guide plate 522 in the circumferential direction is connected to the speedometer light guide plate 521. A light introducing portion 523 that protrudes toward the back side is provided at the other circumferential end of the light guide plate 522 for the tachometer. As shown in FIG. 2, the light guide plate light source L <b> 3 is disposed at a position facing the light introducing portion 523 on the wiring board 30. In addition, the outer surface of the light guide plate 52 along the white print layer 59 is subjected to a texture processing S.

また、上記ベース53は、上記透明文字板51の背面に配置されていて、例えば樹脂などから形成される。ベース53は、透明文字板51背面の外周縁部から背面側に向かって突出する外周側立壁部531と、透明文字板51背面の内周縁部から背面に向かって突出する内周側立壁部532と、外周側立壁部531の背面側端部に設けられた外周側フランジ部533と、内周側立壁部532の背面側端部に設けられた内周側フランジ部534と、から構成されている。   The base 53 is disposed on the back surface of the transparent dial 51 and is made of, for example, resin. The base 53 has an outer peripheral side standing wall portion 531 that protrudes from the outer peripheral edge portion on the back surface of the transparent dial 51 toward the back side, and an inner peripheral side vertical wall portion 532 that protrudes from the inner peripheral edge portion on the back surface of the transparent dial 51 to the rear surface. And an outer peripheral side flange portion 533 provided at the rear side end portion of the outer peripheral side standing wall portion 531, and an inner peripheral side flange portion 534 provided at the rear side end portion of the inner peripheral side vertical wall portion 532. Yes.

速度計用文字板511の外周縁部及び内周縁部に突設された外周側立壁部531及び内周側立壁部532は、回転計用文字板512の外周縁部及び内周縁部に突設された外周側立壁部531及び内周側立壁部532よりも高くなるように、ベース53が設けられている。これにより、図3に示すように、速度計用文字板511が回転計用文字板512よりも正面側に配置される。また、上記外周側フランジ部533には、ケーシング26に取り付けるための取付孔H1が設けられた取付部535が複数突設されている。   The outer peripheral side standing wall portion 531 and the inner peripheral side standing wall portion 532 projecting from the outer peripheral edge portion and the inner peripheral edge portion of the speedometer dial 511 project from the outer peripheral edge portion and the inner peripheral edge portion of the tachometer dial 512. The base 53 is provided so as to be higher than the outer peripheral side standing wall portion 531 and the inner peripheral side standing wall portion 532. As a result, as shown in FIG. 3, the speedometer dial 511 is arranged on the front side of the tachometer dial 512. The outer peripheral flange portion 533 is provided with a plurality of mounting portions 535 provided with mounting holes H1 for mounting to the casing 26.

上述した立体文字板50によれば、導光板用光源L3が発光すると、導光板用光源L3からの光が導光板52の光導入部523に導入される。その後、導光板52の正面及び背面で反射を繰返して導光板52全体に導光されて、導光板52全体が光輝する。このとき、透明文字板51の正面において導光板52の外周縁に対向する部分に白色印刷層59が設けられているため、導光板52を導光する光が白色印刷層59で反射されて運転者視点に届くため、クリアに導光板52の外周縁を光らせることができ、導光板52の視認性を上げて意匠性の向上を図ることができる。   According to the three-dimensional dial plate 50 described above, when the light guide plate light source L3 emits light, the light from the light guide plate light source L3 is introduced into the light introducing portion 523 of the light guide plate 52. Thereafter, the light is repeatedly reflected on the front surface and the back surface of the light guide plate 52 and guided to the entire light guide plate 52, so that the entire light guide plate 52 shines. At this time, since the white printing layer 59 is provided in a portion facing the outer peripheral edge of the light guide plate 52 on the front surface of the transparent dial 51, the light guided through the light guide plate 52 is reflected by the white print layer 59 and operated. Since it reaches the person's viewpoint, the outer peripheral edge of the light guide plate 52 can be clearly illuminated, and the visibility of the light guide plate 52 can be increased to improve the design.

また、上述した立体文字板50によれば、白色印刷層59に沿った導光板52の外周面にシボ加工Sが施されている。これにより、導光板52内を導光する光が、導光板52のシボ加工Sが施された外側面によって拡散されて出射されるため導光板52の該側面が光輝する。また、白色印刷層59で反射された光の一部が導光板52の外側面に向かうため、導光板52の外側面がさらに光輝して、より一層、意匠性の向上を図ることができる。   Further, according to the above-described three-dimensional dial plate 50, the outer peripheral surface of the light guide plate 52 along the white print layer 59 is subjected to the texture processing S. As a result, the light guided through the light guide plate 52 is diffused and emitted by the outer side surface of the light guide plate 52 that has been subjected to the texture processing S, so that the side surface of the light guide plate 52 shines. Further, since a part of the light reflected by the white print layer 59 is directed to the outer surface of the light guide plate 52, the outer surface of the light guide plate 52 is further brilliant, and the design property can be further improved.

また、本発明者らは、上述した立体文字板50の効果を確認するために、図1〜図5に示す構成の立体文字板50と、図6に示す従来の計器とを製造して導光板52の外周縁部の明るさについて測定した。結果、図6に示す従来の計器では、40〜50cd/mの明るさしか得られなかったが、図1〜図5に示す構成の立体文字板50では、80〜90cd/mもの明るさを得ることができた。 In order to confirm the effect of the above-described three-dimensional dial plate 50, the inventors manufactured and introduced the three-dimensional dial plate 50 having the configuration shown in FIGS. 1 to 5 and the conventional instrument shown in FIG. The brightness of the outer peripheral edge of the light plate 52 was measured. As a result, with the conventional instrument shown in FIG. 6, only a brightness of 40 to 50 cd / m 2 was obtained, but with the three-dimensional dial plate 50 having the configuration shown in FIGS. 1 to 5, the brightness of 80 to 90 cd / m 2 was obtained. I was able to get it.

なお、上述した実施形態では、白色印刷層59は一定の幅に設けられていたが、本発明はこれに限ったものではない。例えば、白色印刷層59の幅は任意に変えても良い。また、導光板用光源L3から遠ざかるに従って白色印刷層59の幅を大きくするように変えても良い。具体的には、光導入部523が設けられる位置から周方向に遠ざかるに従って白色印刷層59の幅を大きくする。白色印刷層59は、幅が大きくなるに従って反射率も高くなる。よって、導光板用光源L3から遠ざかって光が届きにくい場所ほど白色印刷層59の幅を太くして反射率を上げることにより、導光板52の縁部を均一に光らせることができる。   In the above-described embodiment, the white print layer 59 is provided with a certain width, but the present invention is not limited to this. For example, the width of the white print layer 59 may be arbitrarily changed. The width of the white print layer 59 may be increased as the distance from the light source L3 for the light guide plate increases. Specifically, the width of the white print layer 59 is increased as the distance from the position where the light introducing portion 523 is provided in the circumferential direction. The white printed layer 59 has a higher reflectance as the width increases. Therefore, the edge of the light guide plate 52 can be uniformly illuminated by increasing the reflectance by increasing the width of the white print layer 59 in a place where the light is difficult to reach from the light source L3 for the light guide plate.

また、上述した実施形態では、白色印刷層59の印刷密度は一定に設けられていたが、本発明はこれに限ったものではない。例えば、白色印刷層59の印刷密度は任意に変えても良い。また、導光板用光源L3から遠ざかるに従って白色印刷層59の印刷密度を大きくするように変えても良い。具体的には、光導入部523が設けられる位置から周方向に遠ざかるに従って白色印刷層59の幅を大きくする。白色印刷層59は、印刷密度が大きくなるに従って反射率も高くなる。よって、導光板用光源L3から遠ざかって光が届きにくい場所ほど白色印刷層59の印刷密度を大きくして反射率を上げることにより、導光板52の縁部を均一に光らせることができる。   In the embodiment described above, the printing density of the white print layer 59 is constant, but the present invention is not limited to this. For example, the print density of the white print layer 59 may be arbitrarily changed. Further, the printing density of the white print layer 59 may be increased as the distance from the light guide plate light source L3 increases. Specifically, the width of the white print layer 59 is increased as the distance from the position where the light introducing portion 523 is provided in the circumferential direction. The white printed layer 59 has a higher reflectance as the printing density increases. Therefore, the edge of the light guide plate 52 can be uniformly illuminated by increasing the print density of the white print layer 59 and increasing the reflectance in a place where the light is difficult to reach away from the light source L3 for the light guide plate.

また、上述した実施形態では、導光板52と透明文字板51とがほぼ同形であったが、本発明はこれに限ったものではない。例えば、透明文字板51が四角状に設けられ、導光板52が弧状に設けられていてもよい。この場合、白色印刷層59は、透明文字板51正面の縁部ではなく、透明文字板51の正面において導光板52の縁部に対向する部分に設けられる。また、上述した白色印刷層59の幅、位置、形などは見栄えに合わせて調整するようにしてもよい。   In the above-described embodiment, the light guide plate 52 and the transparent dial plate 51 have substantially the same shape, but the present invention is not limited to this. For example, the transparent dial 51 may be provided in a square shape, and the light guide plate 52 may be provided in an arc shape. In this case, the white print layer 59 is provided not on the edge on the front face of the transparent dial 51 but on the portion facing the edge of the light guide plate 52 on the front face of the transparent dial 51. Further, the width, position, shape, and the like of the white print layer 59 described above may be adjusted according to the appearance.

また、上述した実施形態では、高反射層として白色印刷層59を設けていたが、本発明はこれに限ったものではない。高反射層としては、透明文字板51の正面の他の領域よりも反射率の高い部材から設けられていればよく、白色印刷に限られるものではない。   In the above-described embodiment, the white print layer 59 is provided as the highly reflective layer, but the present invention is not limited to this. The high reflection layer is not limited to white printing as long as it is provided from a member having a higher reflectance than other regions in front of the transparent dial 51.

また、上述した実施形態では、白色印刷層59に沿った導光板52の外側面は正面に対して垂直に設けられていたが、本発明はこれに限ったものではない。例えば、白色印刷層59に沿った導光板52の外側面に正面に向かうに従って内側に近づくテーパを設けることも考えられる。このように、テーパを設けることにより、より均一に導光板52の外周縁を光らせることができる。   In the above-described embodiment, the outer surface of the light guide plate 52 along the white print layer 59 is provided perpendicular to the front surface, but the present invention is not limited to this. For example, it is also conceivable to provide a taper that approaches the inner side toward the front surface on the outer surface of the light guide plate 52 along the white print layer 59. Thus, by providing the taper, the outer peripheral edge of the light guide plate 52 can be illuminated more uniformly.

また、前述した実施形態は本発明の代表的な形態を示したに過ぎず、本発明は、実施形態に限定されるものではない。即ち、本発明の骨子を逸脱しない範囲で種々変形して実施することができる。   Further, the above-described embodiments are merely representative forms of the present invention, and the present invention is not limited to the embodiments. That is, various modifications can be made without departing from the scope of the present invention.

本発明の表示装置としての車両用コンビネーションメータの一実施の形態を示す正面図である。It is a front view which shows one Embodiment of the combination meter for vehicles as a display apparatus of this invention. 図1に示す車両用コンビネーションメータのI−I線部分断面図である。FIG. 2 is a partial cross-sectional view taken along line II of the vehicle combination meter illustrated in FIG. 1. 図1の車両用コンビネーションメータを構成する立体文字板の斜視図である。It is a perspective view of the three-dimensional dial plate which comprises the vehicle combination meter of FIG. 図3に示す立体文字板のII−II線断面図である。It is the II-II sectional view taken on the line of the solid dial shown in FIG. 図3に示す立体文字板のII−II線断面図である。It is the II-II sectional view taken on the line of the solid dial shown in FIG. 従来の表示装置の一例を示す斜視図である。It is a perspective view which shows an example of the conventional display apparatus.

符号の説明Explanation of symbols

51 透明文字板(文字板)
52 導光板
59 白色印刷層(高反射層)
S シボ加工
L3 導光板用光源(光源)
51 Transparent dial (Dial)
52 Light guide plate 59 White printing layer (high reflection layer)
S Textured L3 Light source for light guide plate (light source)

Claims (3)

所定意匠が設けられた文字板と、前記文字板の正面に配置された導光板と、前記導光板に対して光を入射する光源と、を有する表示装置において、
前記文字板の正面において前記導光板の縁部に対向する部分に前記文字板の他の領域よりも反射率の高い高反射層が設けられていることを特徴とする表示装置。
In a display device having a dial plate provided with a predetermined design, a light guide plate arranged in front of the dial plate, and a light source that makes light incident on the light guide plate,
A display device, wherein a high reflection layer having a higher reflectance than that of other regions of the dial plate is provided in a portion facing the edge portion of the light guide plate in front of the dial plate.
前記高反射層に沿った前記導光板の側面にシボ加工が施されていることを特徴とする請求項1に記載の表示装置。   The display device according to claim 1, wherein the side surface of the light guide plate along the highly reflective layer is subjected to a textured process. 前記高反射層が、前記光源から遠ざかるに従って幅が太くなるように又は前記光源から遠ざかるに従って密度が濃くなるように、設けられていることを特徴とする請求項1又は2に記載の表示装置。   3. The display device according to claim 1, wherein the highly reflective layer is provided such that the width increases as the distance from the light source increases, or the density increases as the distance from the light source increases.
JP2007159347A 2007-06-15 2007-06-15 Display device Active JP5004222B2 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008310186A (en) * 2007-06-15 2008-12-25 Yazaki Corp Display device
WO2011030560A1 (en) * 2009-09-14 2011-03-17 ヤマハモーターエレクトロニクス株式会社 Indicator for saddled vehicle, as well as saddled vehicle
JP2015021751A (en) * 2013-07-16 2015-02-02 カルソニックカンセイ株式会社 Dial illumination structure

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001304922A (en) * 2000-04-19 2001-10-31 Calsonic Kansei Corp Dial for measuring instrument for vehicle
JP2003207372A (en) * 2002-01-15 2003-07-25 Toyoda Gosei Co Ltd Luminescent device for meter section
JP2006049385A (en) * 2004-07-30 2006-02-16 Toyoda Gosei Co Ltd Light-emitting device
JP2007017167A (en) * 2005-07-05 2007-01-25 Yazaki Corp Measuring instrument

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001304922A (en) * 2000-04-19 2001-10-31 Calsonic Kansei Corp Dial for measuring instrument for vehicle
JP2003207372A (en) * 2002-01-15 2003-07-25 Toyoda Gosei Co Ltd Luminescent device for meter section
JP2006049385A (en) * 2004-07-30 2006-02-16 Toyoda Gosei Co Ltd Light-emitting device
JP2007017167A (en) * 2005-07-05 2007-01-25 Yazaki Corp Measuring instrument

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008310186A (en) * 2007-06-15 2008-12-25 Yazaki Corp Display device
WO2011030560A1 (en) * 2009-09-14 2011-03-17 ヤマハモーターエレクトロニクス株式会社 Indicator for saddled vehicle, as well as saddled vehicle
JP2015021751A (en) * 2013-07-16 2015-02-02 カルソニックカンセイ株式会社 Dial illumination structure

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