JP2013234953A

JP2013234953A - Illumination structure of meter device

Info

Publication number: JP2013234953A
Application number: JP2012108680A
Authority: JP
Inventors: Shigeru Hagiwara; 茂萩原
Original assignee: Yazaki Corp
Current assignee: Yazaki Corp
Priority date: 2012-05-10
Filing date: 2012-05-10
Publication date: 2013-11-21
Anticipated expiration: 2032-05-10
Also published as: JP6023463B2

Abstract

PROBLEM TO BE SOLVED: To provide an illumination structure of a meter device high in illumination efficiency and luminance, capable of suppressing leakage light, having good appearance and design, and capable of providing high-class feeling.SOLUTION: An illumination structure of a meter device includes a light guide member 7 including a base end part 75 disposed in a space between the outer peripheral edge of a character plate 5 and a case 9, a scale part 71 projecting toward a return plate 6 from the base end part 75 to stand with respect to the character plate 5 and positioned between the character plate 5 and the return plate 6, and a connection part 70 for connecting the adjacent scale part 71.

Description

本発明は、車両、航空機、船舶等に搭載されるメータ装置に関するものである。 The present invention relates to a meter device mounted on a vehicle, an aircraft, a ship, or the like.

従来のメータ装置として、立体感に富んだ見栄えを実現することが可能なメータ装置が開発されており、例えば特許文献１に記載のものが知られている。
即ち、この特許文献１には、図１２及び図１３に示すように、指針１０１と、この指針１０１の指示対象となる指標部１０２が設けられた表示板１０３と、この表示板１０３の前方に配置され指針１０１の作動範囲を取り巻く用に設けた遮光性の筒状部材１０４とを備え、表示板１０３の前方に光源１０５からの光を受けて発光する複数の透光体１０６を立体構造物として設けたメータ装置１００が開示されている。 As a conventional meter device, a meter device capable of realizing a three-dimensional appearance has been developed. For example, a device described in Patent Document 1 is known.
That is, in Patent Document 1, as shown in FIGS. 12 and 13, a pointer 101, a display board 103 provided with an index portion 102 to be indicated by the pointer 101, and a front of the display board 103 are provided. And a light-shielding cylindrical member 104 disposed to surround the operating range of the pointer 101, and a plurality of translucent bodies 106 that receive light from the light source 105 and emit light in front of the display plate 103. The meter apparatus 100 provided as is disclosed.

このような構成のメータ装置１００によれば、筒状部材１０４の収容部１０４Ａ（図１４参照）に、透光体１０６の連結部１０６Ａを収容することにより、光源１０５の点灯時に、透光体１０６を立体照明できる。つまり、立体造形物であり、メータの目盛として機能する複数の透光体１０６を、表示板１０３上に配置するだけでなく、筒状部材１０４の収容部１０４Ａから突出させたことにより、透光体１０６の立体造形を際だたせることができ、立体感に富んだ見栄えのあるメータ装置１００を実現できるものである。 According to the meter device 100 configured as described above, the coupling portion 106A of the translucent body 106 is accommodated in the accommodating portion 104A (see FIG. 14) of the cylindrical member 104, so that the translucent body is turned on when the light source 105 is turned on. 106 can be stereoscopically illuminated. In other words, a plurality of translucent bodies 106 that are three-dimensionally shaped objects and function as scales for the meter are not only arranged on the display plate 103 but also projected from the accommodating portion 104A of the cylindrical member 104, thereby translucent. The three-dimensional modeling of the body 106 can be conspicuous, and the meter device 100 having a great three-dimensional appearance can be realized.

また、この特許文献１に記載のメータ装置１００にあっては、突出された目盛となる透光体１０６の上部を、見返板となる遮蔽部を構成する筒状部材１０４が覆う構造のものである。一方、目盛となる透光体１０６については、収容部１０４Ａの下部側に設置されている光源１０５からの光が、収容部１０４Ａの内部を進行して透光体１０６へ裏面側から入射し、表面側から出射することで、目盛となる透光体１０６での立体発光を行う。 Moreover, in the meter apparatus 100 of this patent document 1, it is a thing of the structure where the cylindrical member 104 which comprises the shielding part used as a return plate covers the upper part of the translucent body 106 used as the protruding scale. is there. On the other hand, for the translucent body 106 serving as a scale, the light from the light source 105 installed on the lower side of the housing portion 104A travels inside the housing portion 104A and enters the translucent body 106 from the back side, By emitting from the front surface side, three-dimensional light emission is performed by the transparent body 106 serving as a scale.

特開２００６−１２６０４８号公報JP 2006-126048 A

ところが、収容部１０４Ａには、導光用として、透光体１０６と同じ高さの連結部１０６Ａが収容されている。そのため、光源１０５から導光されてきた照明光が入射する連結部１０６Ａと一体の透光体１０６は、この透光体１０６の特に上部側と遮蔽部である筒状部材１０４との間の微細な隙間である開口部１０４Ｂから外部へ、高輝度で漏光する場合があり、照明構造として品質低下の印象を与える虞がある。 However, the accommodating portion 104A accommodates a connecting portion 106A having the same height as the translucent member 106 for guiding light. For this reason, the translucent body 106 integrated with the connecting portion 106A to which the illumination light guided from the light source 105 is incident is a fine portion between the translucent body 106 and the cylindrical member 104 that is the shielding portion. There is a case where light leaks with high luminance from the opening 104B, which is a small gap, to the outside, which may give an impression of quality deterioration as an illumination structure.

さらに、透光体１０６を囲設する部分が凹凸状態を呈している筒状部材１０４については、通常、見返板を構成するものであるが、この見返板の部分は黒色系が一般的である。そのため、その見返板の部分が影のような状態で、目盛の周囲を大きく取り囲むように形成されることとなる。その結果、見栄えやデザイン性の悪いメータ装置といった印象を与える虞がある。また、連結部１０６Ａを収容する収容部１０４Ａを筒状部材１０４に形成しようとすると、筒状部材１０４の成形時にウェルドラインが生じて、見返板としての見栄えが損なわれる虞がある。 Further, the cylindrical member 104 in which the portion surrounding the translucent body 106 has an uneven state normally constitutes a facing plate, but the facing plate portion is generally black. . Therefore, the part of the facing plate is formed so as to largely surround the scale in a shaded state. As a result, there is a risk of giving an impression of a meter device with poor appearance and poor design. In addition, if the accommodating portion 104A that accommodates the connecting portion 106A is to be formed in the cylindrical member 104, a weld line may occur during the molding of the cylindrical member 104, and the appearance as a facing plate may be impaired.

本発明は、上述した事情に鑑みてなされたものであり、その目的は、照明効率が良好で高輝度な漏光が抑えられ、しかも、見栄えやデザイン性が高く高級感を付与することが可能となる、メータ装置の照明構造を提供することにある。 The present invention has been made in view of the above-described circumstances, and its purpose is that illumination efficiency is good and high-intensity light leakage is suppressed, and it is possible to give a high-class appearance with high appearance and design. An object of the present invention is to provide an illumination structure for a meter device.

前述した目的を達成するために、本発明に係るメータ装置の照明構造は、下記（１）から（７）を特徴としている。
（１）文字板と、
前記文字板の外周縁を囲むケースと、
前記文字板の外周の一部又は全周を囲い、前記文字板に対して起立するような状態で前記ケースに組付けられる見返板と、
前記文字板の外周縁と前記ケースとの間隙に設置される基端部と、前記文字板に対して起立するように当該基端部から前記見返板に向けて突設されるとともに、前記文字板と前記見返板との間に位置する目盛部と、隣り合う当該目盛部を連結する連結部と、を有するライトガイド部材と、
前記基端部の基端面に向けて照明光を入射する光源と、
を備えたこと。
（２）上記（１）の構成のメータ装置の照明構造であって、
前記目盛部の先端、及び該目盛部の先端に当接する前記見返板には、互いに嵌合する段部が形成されている、
こと。
（３）上記（１）の構成のメータ装置の照明構造であって、
前記目盛部の先端、及び該目盛部の先端に当接する前記見返板には、凹部で凸部を噛みこんで嵌合する鉤状部がそれぞれ形成されている、
こと。
（４）上記（１）の構成のメータ装置の照明構造であって、
前記目盛部の先端、及び該目盛部の先端に当接する前記見返板には、凹部で凸部を密着状態に噛みこんで嵌合する楔状部がそれぞれ形成され、
前記楔状部は、前記凸部の面とこれに嵌合する前記凹部の面とが傾斜している、
こと。
（５）上記（１）〜（４）のいずれか一つの構成メータ装置の照明構造であって、
前記ケースは、前記目盛部に当接するリブを有する、
こと。
（６）上記（１）〜（５）のいずれか一つの構成メータ装置の照明構造であって、
前記ケースは、前記目盛部に対向する面が該目盛部に対して凹状に湾曲した反射面を有する
こと。
（７）上記（１）〜（６）のいずれか一つの構成メータ装置の照明構造であって、
前記連結部と前記ケースには、いずれか一方がボスを有し他方がそのボスを嵌合させる孔が形成されている
こと。 In order to achieve the above-described object, the illumination structure of the meter device according to the present invention is characterized by the following (1) to (7).
(1) Dial and
A case surrounding the outer periphery of the dial,
A dial plate that surrounds a part or the entire circumference of the dial and is assembled to the case in a state of standing with respect to the dial;
A base end portion installed in a gap between an outer peripheral edge of the dial and the case; a base end projecting from the base end so as to stand up to the dial; and the character A light guide member having a scale portion located between the plate and the facing plate, and a connecting portion for connecting the adjacent scale portions;
A light source that makes illumination light incident toward a base end surface of the base end portion;
Having provided.
(2) An illumination structure of the meter device having the configuration of (1) above,
Steps that fit together are formed on the tip of the scale part, and the facing plate that contacts the tip of the scale part.
about.
(3) An illumination structure of the meter device configured as described in (1) above,
The tip of the scale part, and the counter plate contacting the tip of the scale part are each formed with a hook-like part that bites and fits a convex part with a concave part,
about.
(4) An illumination structure of the meter device configured as described in (1) above,
The tip of the scale part, and the facing plate that contacts the tip of the scale part are each formed with a wedge-like part that engages with a convex part in close contact with the concave part,
The wedge-shaped portion has an inclined surface of the convex portion and a surface of the concave portion fitted to the convex portion.
about.
(5) The illumination structure of the constituent meter device according to any one of (1) to (4) above,
The case has a rib that comes into contact with the scale portion.
about.
(6) The illumination structure of the constituent meter device according to any one of (1) to (5) above,
The case has a reflective surface whose surface facing the scale portion is curved concavely with respect to the scale portion.
(7) The illumination structure of the constituent meter device according to any one of (1) to (6) above,
Either one of the connecting portion and the case has a boss, and the other has a hole for fitting the boss.

上記（１）に記載のメータ装置の照明構造によれば、ライトガイド部材に、細幅で高背形状の目盛部のほかに、低背状態で導光性を有する連結部を備える。そのため、目盛部よりも低い目盛部間の低背状態を有する連結部の内部を導光される光源からの照明光が仮に外部に漏光したとしても、漏光現象の発生を効果的に抑えることが可能となる。従って、シャープな漏光現象の発生を効果的に抑えることが可能となる。これにより照明効率が良好で、品質の高い照明を施すことができる。
さらに、上述のように、細幅で突出した細幅形状の目盛部において、立体的に輝く発光照明を実現できる。その結果、見栄えやデザイン性が高いだけではなく、高級感のある照明構造を付与することができる。
上記（２）に記載のメータ装置の照明構造によれば、双方の間を段部とすることで、目盛部と見返板の表面板との組付けが確実に行える。しかも、見返板内部の連結部から漏光があったとしても、そしてその漏光が切欠溝と目盛部との間の僅かな隙間から漏出そうとしても、段部で多重散乱させて光量を減衰させることが可能となる。その結果、隙間から漏れ出す照明光が発生したとしてもその輝度を可及的に低く抑えることで、照明感の質的低下が生じるのを防止できる。
上記（３）に記載のメータ装置の照明構造によれば、凹部で凸部を噛みこんで嵌合した鉤状部を有するので、上記（２）の構成と同様、漏光する照明光を鉤状部の段部で減衰させることが可能となる。
上記（４）に記載のメータ装置の照明構造によれば、上記（２）または（３）と同様、漏光する照明光を楔状部の段部で減衰させることが可能となる。
上記（５）に記載のメータ装置の照明構造によれば、リブにより目盛部の位置決めが確実になる。さらに、目盛部が文字板上に設置される姿勢を維持し易くなる。
上記（６）に記載のメータ装置の照明構造によれば、反射面で漏光する照明光を反射させて目盛部へ再入射できるので、照明効率が向上する。
上記（７）に記載のメータ装置の照明構造によれば、簡易な構造を有するので、ライトガイド部材をケースに対して簡単にかつ確実に組付けることができる。 According to the illumination structure of the meter device described in the above (1), the light guide member is provided with a connecting portion having light guiding properties in a low profile state in addition to the narrow and high-scaled scale portion. Therefore, even if the illumination light from the light source guided through the inside of the connecting portion having a low profile between the scale parts lower than the scale part leaks to the outside, it is possible to effectively suppress the occurrence of the light leakage phenomenon. It becomes possible. Therefore, it is possible to effectively suppress the occurrence of a sharp light leakage phenomenon. Thereby, illumination efficiency is favorable and high quality illumination can be performed.
Furthermore, as described above, light emission illumination that is three-dimensionally shining can be realized in the narrow-scaled scale portion protruding with a narrow width. As a result, not only the appearance and design are high, but also a high-quality lighting structure can be provided.
According to the illumination structure of the meter device described in (2) above, the scale portion and the surface plate of the facing plate can be reliably assembled by using the step portion between the two. In addition, even if light leaks from the connecting part inside the counter-plate, and even if the light leaks from a slight gap between the notch groove and the scale part, the amount of light is attenuated by multiple scattering at the step part. Is possible. As a result, even if illumination light leaking from the gap is generated, it is possible to prevent the quality of the illumination from being deteriorated by suppressing the luminance as low as possible.
According to the illumination structure of the meter device described in the above (3), since it has a bowl-shaped part that is engaged by fitting the convex part with the concave part, like the configuration of the above (2), the leaking illumination light is shaped like a bowl. It is possible to attenuate at the step of the part.
According to the illumination structure of the meter device described in (4) above, it is possible to attenuate the leaking illumination light at the stepped portion of the wedge-shaped portion, as in (2) or (3) above.
According to the illumination structure of the meter device described in (5) above, the positioning of the scale portion is ensured by the rib. Furthermore, it becomes easy to maintain the attitude | position in which a scale part is installed on a dial.
According to the illumination structure of the meter device described in (6) above, the illumination light leaking on the reflecting surface can be reflected and re-entered on the scale portion, so that the illumination efficiency is improved.
According to the illumination structure of the meter device described in (7) above, since it has a simple structure, the light guide member can be easily and reliably assembled to the case.

本発明のメータ装置の照明構造によれば、ライトガイド部材に、細幅で高背形状の目盛部のほかに、低背状態で導光性を有する連結部を備える。そのため、目盛部よりも低い目盛部間の低背状態を有する連結部の内部を導光される光源からの照明光が仮に外部に漏光したとしても、漏光現象の発生を効果的に抑えることが可能となる。従って、漏光現象の発生を効果的に抑えることが可能となる。これにより、照明効率が良好で品質の高い照明を施すことができる。 According to the illumination structure of the meter device of the present invention, the light guide member is provided with a connecting portion having a light guide property in a low profile state in addition to the narrow and high-scaled scale portion. Therefore, even if the illumination light from the light source guided through the inside of the connecting portion having a low profile between the scale parts lower than the scale part leaks to the outside, it is possible to effectively suppress the occurrence of the light leakage phenomenon. It becomes possible. Therefore, the occurrence of the light leakage phenomenon can be effectively suppressed. Thereby, illumination efficiency is favorable and high quality illumination can be given.

また、細幅で突出した細幅形状の目盛部において、立体的に輝く発光照明を実現できる。その結果、見栄えやデザイン性が高いだけではなく、高級感のある照明構造を付与することができる。 In addition, a three-dimensionally shining light-emitting illumination can be realized in a narrow-shaped scale portion protruding with a narrow width. As a result, not only the appearance and design are high, but also a high-quality lighting structure can be provided.

以上、本発明について簡潔に説明した。更に、以下に説明される発明を実施するための形態（以下、「実施形態」という。）を添付の図面を参照して通読することにより、本発明の詳細は更に明確化されるであろう。 The present invention has been briefly described above. Further, the details of the present invention will be further clarified by reading through a mode for carrying out the invention described below (hereinafter referred to as “embodiment”) with reference to the accompanying drawings. .

図１は、本発明の第１の実施形態に係る照明構造が適用されたメータ装置を示す平面図である。FIG. 1 is a plan view showing a meter device to which an illumination structure according to the first embodiment of the present invention is applied. 図２は、図１におけるＩＩ−ＩＩ線の矢視断面図である。FIG. 2 is a cross-sectional view taken along the line II-II in FIG. 図３は、図３（Ａ）は図１のメータ装置の要部を構成する文字板、見返板、ライトガイド部材、及びケースの組み付け状態の一部を示す分解斜視図、図３（Ｂ）は図３（Ａ）におけるＩＩＩＢ部の拡大斜視図である。3A is an exploded perspective view showing a part of the assembled state of the dial, the dial plate, the light guide member, and the case constituting the main part of the meter device of FIG. 1, FIG. 3B. These are the expansion perspective views of the IIIB section in Drawing 3 (A). 図４は、本発明の第１の実施形態に係る照明構造が適用されたメータ装置の文字板とライトガイド部材の組付状態を示す要部斜視図である。FIG. 4 is a main part perspective view showing an assembled state of the dial and light guide member of the meter device to which the illumination structure according to the first embodiment of the present invention is applied. 図５は、本発明の第１の実施形態に係る照明構造が適用されたメータ装置の要部の組付け状態などを示す要部斜視図である。FIG. 5 is a main part perspective view showing an assembled state of the main part of the meter device to which the illumination structure according to the first embodiment of the present invention is applied. 図６は、本発明の第１の実施形態に係る照明構造が適用されたメータ装置での照明光の進行光路を示す説明図である。FIG. 6 is an explanatory diagram showing a traveling light path of illumination light in the meter device to which the illumination structure according to the first embodiment of the present invention is applied. 図７は、本発明の第２の実施形態に係る照明構造が適用されたメータ装置の目盛部の組付け状態を示す要部斜視図である。FIG. 7 is a main part perspective view showing an assembled state of the scale part of the meter device to which the illumination structure according to the second embodiment of the present invention is applied. 図８は、本発明の第２の実施形態に係る照明構造が適用されたメータ装置における鉤状部を示す要部断面図である。FIG. 8: is principal part sectional drawing which shows the bowl-shaped part in the meter apparatus with which the illumination structure which concerns on the 2nd Embodiment of this invention was applied. 図９は、本発明の第２の実施形態に係る照明構造が適用されたメータ装置における受光部近傍での照明光の入射光路を示す説明図である。FIG. 9 is an explanatory diagram showing an incident optical path of illumination light in the vicinity of the light receiving unit in the meter device to which the illumination structure according to the second embodiment of the present invention is applied. 図１０は、図１０（Ａ）は本発明の第３の実施形態に係る照明構造が適用されたメータ装置における目盛部での組付け状態を示す要部斜視断面図、図１０（Ｂ）は楔状部を示すＸＢ部の拡大断面図である。FIG. 10A is a perspective cross-sectional view of the main part showing an assembled state of the scale unit in the meter device to which the illumination structure according to the third embodiment of the present invention is applied, and FIG. It is an expanded sectional view of the XB part which shows a wedge-shaped part. 図１１は、本発明の第３の実施形態に係る照明構造が適用されたメータ装置における受光部近傍での照明光の入射光路を示す説明図である。FIG. 11 is an explanatory diagram showing an incident light path of illumination light in the vicinity of the light receiving unit in the meter device to which the illumination structure according to the third embodiment of the present invention is applied. 図１２は、従来のメータ装置の照明構造を示す平面図である。FIG. 12 is a plan view showing an illumination structure of a conventional meter device. 図１３は、図１２におけるＸＩＩＩ−ＸＩＩＩ線矢視断面図である。13 is a cross-sectional view taken along line XIII-XIII in FIG. 図１４は、図１２におけるＸＩＶ−ＸＩＶ線矢視断面図である。14 is a cross-sectional view taken along line XIV-XIV in FIG.

以下、本発明の実施形態について、添付図面を参照しながら詳細に説明する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

（第１の実施形態）
図１及び図２は、本発明の照明構造が適用された第１の実施形態に係るメータ装置１Ａを示すものである。 (First embodiment)
1 and 2 show a meter device 1A according to a first embodiment to which the illumination structure of the present invention is applied.

このメータ装置１Ａは、自動車用のスピードメータに適用されており、図２に示すように、基板２の上に実装された後述の目盛Ｉの照明用の光源３と、この光源３が搭載された基板２表面とは反対の裏面に搭載されたムーブメント４と、文字板を構成する文字板５と、見返板６と、光源３の直上であって、かつ、文字板５と見返板６との間に略円環状に取り付けられたライトガイド部材７と、内面が反射面を構成する反射板８と、一部が後述の支持部９１として機能するケース９と、指針１０と、裏カバー１１と、トリップメータなどを構成するＬＣＤ１２およびその光源１３と、基板２上の指針軸４１近傍に搭載した指針照明用の光源１４と、を備えている。 This meter device 1A is applied to a speedometer for automobiles. As shown in FIG. 2, a light source 3 for illumination of a scale I described later mounted on a substrate 2 and the light source 3 are mounted. The movement 4 mounted on the back surface opposite to the front surface of the substrate 2, the dial plate 5 constituting the dial plate, the dial plate 6, the dial plate 5 and the dial plate 6 directly above the light source 3. A light guide member 7 mounted in a substantially annular shape, a reflecting plate 8 whose inner surface forms a reflecting surface, a case 9 that partially functions as a support portion 91 described later, a pointer 10, and a back cover 11 And the LCD 12 constituting the trip meter and the light source 13 thereof, and the light source 14 for pointer illumination mounted in the vicinity of the pointer shaft 41 on the substrate 2.

本実施形態のメータ装置１は、コンビネーションメータの一部を構成しており、表面側の全周が上述の見返板６で覆われている。また、この見返板６には、メータ装置１を含む各種計器類を設置するための各種表示窓を開口させている。更に、この見返板６は、透明なカバーガラス１５で上部が覆われている。 The meter device 1 according to the present embodiment constitutes a part of a combination meter, and the entire circumference on the surface side is covered with the facing plate 6 described above. In addition, the display plate 6 is opened with various display windows for installing various instruments including the meter device 1. Further, the facing plate 6 is covered with a transparent cover glass 15 at the top.

目盛用の光源３には、所定の照明光に対応した所定波長（λ）の可視光（これを「照明光」とよぶ）を出射するＬＥＤが用いられている。本実施形態の光源３は、複数個のものが互いに所定間隔で放射状に設置されており、特に効率的な発光照明を行うため、後述する各目盛部７１から突出する基端部７５に対応したその直下にそれぞれ設置される。これにより、光源３からの照明光が基端部７５に向けて効果的に入射するので、ライトガイド部材７に対して効率のよい発光照明、特に効果的な立体発光照明を行うことができる。 The scale light source 3 is an LED that emits visible light (referred to as “illumination light”) having a predetermined wavelength (λ) corresponding to predetermined illumination light. A plurality of light sources 3 according to the present embodiment are radially arranged at predetermined intervals from each other, and correspond to base end portions 75 projecting from the scale portions 71 described later in order to perform particularly efficient light emission illumination. It is installed directly under it. Thereby, since the illumination light from the light source 3 is effectively incident toward the base end portion 75, efficient light emission illumination, particularly effective three-dimensional light emission illumination can be performed on the light guide member 7.

光源３からの照明光は、Ｚ軸方向に沿った光軸となる中央部を最大光量とした分布状態を有しているが、Ｘ−Ｙ面方向についての光量分布には方向依存性のない、均一な出射特性のものが使用される。即ち、本実施形態の光源３では、Ｘ−Ｙ面の方向に関しては全周に亘り、略均一な光量を出射する光量分布特性を有する。なお、本実施形態の光源３としては、特にこのＬＥＤに限定されるものではないが、消費電力が少なく小型の点光源である点でこのＬＥＤが好ましい。ＬＣＤ１２用の光源１３及び指針照明用の光源１４についても、同様であってＬＥＤが使用されているが、消費電力が少なく小型の点光源である点でこのＬＥＤが好ましい。 The illumination light from the light source 3 has a distribution state in which the central portion serving as the optical axis along the Z-axis direction has a maximum light amount, but the light amount distribution in the XY plane direction has no direction dependency. Those having uniform emission characteristics are used. That is, the light source 3 of the present embodiment has a light quantity distribution characteristic that emits a substantially uniform quantity of light over the entire circumference in the direction of the XY plane. The light source 3 of the present embodiment is not particularly limited to this LED, but this LED is preferable in that it is a small point light source with low power consumption. The light source 13 for the LCD 12 and the light source 14 for pointer illumination are the same and use LEDs, but this LED is preferable in that it is a small point light source with low power consumption.

ムーブメント４は、メータ装置１Ａを搭載する自動車の走行スピードに対応した速度表示を行うため、図示外の速度検出器からの信号に応じた適宜の角度だけ指針１０を回動させるものである。このムーブメント４は、図示外の適宜のモータ、例えばステッパモータ、及び図示外の必要な減速機構などが内蔵されており、指針軸４１（図２参照）を介して指針１０と一体に接続されている。 The movement 4 rotates the pointer 10 by an appropriate angle according to a signal from a speed detector (not shown) in order to display a speed corresponding to the traveling speed of the automobile on which the meter device 1A is mounted. The movement 4 incorporates an appropriate motor (not shown), such as a stepper motor, and a necessary reduction mechanism (not shown). The movement 4 is integrally connected to the pointer 10 via a pointer shaft 41 (see FIG. 2). Yes.

文字板５には、意匠、例えば、数字Ｆ、文字、記号など、車自体或いは車周辺の環境などに関する必要情報を印字しているとともに、トリップメータなどを表示するＬＣＤ１２が配置されている。本実施形態の文字板５は、透光性を有する適宜の薄板材などを用いて円盤状（又は半円盤状）に形成されているが、後述の必須領域以外は遮光処理が上面に施されている。 On the dial plate 5, an LCD 12 for displaying a trip meter or the like as well as a design, for example, necessary information about the car itself or the environment around the car, such as numbers F, letters, and symbols, is arranged. The dial plate 5 of the present embodiment is formed in a disc shape (or a semi-disc shape) using an appropriate thin plate material having translucency, etc., but a light shielding process is performed on the upper surface except for an essential region described later. ing.

また、この文字板５では、詳細は後述するが、ライトガイド部材７の目盛部７１の矩形形状を有する裏面７１Ａ（図５参照）を支承する部位（領域α）を有する。この部位は、ガイド用の光源３からの照明光が透過可能な透明部を構成する。特に、本実施形態の文字板５では、意匠として数字Ｆを印字した領域と、前述の目盛部７１の裏面７１Ａが支承される領域α（図３及び図５にてハッチングにて示されるエリア。これが透光部分に対応する)とを除いた残りの領域β（これが不透光部分に対応する）に全て遮光性膜などが塗布されている。 Further, the dial plate 5 has a portion (region α) for supporting a back surface 71A (see FIG. 5) having a rectangular shape of the scale portion 71 of the light guide member 7, although details will be described later. This part constitutes a transparent part that can transmit illumination light from the light source 3 for guide. In particular, in the dial plate 5 of the present embodiment, the area where the number F is printed as a design and the area α (the area indicated by hatching in FIGS. 3 and 5) on which the back surface 71A of the scale portion 71 is supported. A light-shielding film or the like is applied to all of the remaining region β (this corresponds to the non-light-transmitting portion) except for the light-transmitting portion.

その結果、文字板５において、透光性の数字Ｆが印字された領域には、主に、指針照明用の光源１４からの照明光が入射する。一方、文字板５の、目盛部７１が搭載されている先述の領域α（以下、矩形領域とよぶ）には、目盛照明用の光源３からの照明光が、入射して効率よく透過する。 As a result, the illumination light from the light source 14 for pointer illumination is mainly incident on the dial 5 in the area where the translucent number F is printed. On the other hand, illumination light from the light source 3 for scale illumination is incident and efficiently transmitted to the above-mentioned region α (hereinafter referred to as a rectangular region) where the scale portion 71 is mounted on the dial plate 5.

また、この文字板５は、表面側の外縁部に沿って所要間隔ごとに、ライトガイド部材７の目盛部７１の裏面７１Ａを支承し、支持する。特にこの支持の際には、これら双方を正確に位置決めして固定させるため、文字板５、ライトガイド部材７及びケース９の間に基部嵌合手段２０を設ける。 Further, the dial 5 supports and supports the back surface 71A of the scale portion 71 of the light guide member 7 along the outer edge portion on the front surface side at every required interval. In particular, during this support, a base fitting means 20 is provided between the dial plate 5, the light guide member 7 and the case 9 in order to accurately position and fix both of them.

この基部嵌合手段２０は、目盛部７１の裏面７１Ａと文字板５の表面との間の位置決めを行い、双方をずれることなくしっかりと固定させるためのもである。本実施形態の基部嵌合手段２０は、図３及び図４に示すように、ライトガイド部材７の連結部７０を貫通した孔７Ａが複数個所に穿設されるとともに、ケース９の表面には略円柱状のボス９６を有する。また、文字板５における孔７Ａ及びボス９６に面する箇所には、該文字板５外縁を切り欠く切欠き５１が形成されている。そして、このボス９６を切欠き５１を挿通させて連結部７０の孔７Ａに嵌合させ、位置決め及び固定を行う。このようにして、ケース９によってライトガイド部材７が位置決めされ、ライトガイド部材７がケース９に支持される。 This base fitting means 20 is for positioning between the back surface 71A of the scale portion 71 and the surface of the dial plate 5 and fixing them firmly without shifting. As shown in FIGS. 3 and 4, the base fitting means 20 of the present embodiment has holes 7 A penetrating through the connecting portion 70 of the light guide member 7 at a plurality of locations and the surface of the case 9. A substantially cylindrical boss 96 is provided. Further, a notch 51 that cuts out the outer edge of the dial 5 is formed at a location facing the hole 7A and the boss 96 in the dial 5. Then, the boss 96 is inserted through the notch 51 and fitted into the hole 7A of the connecting portion 70 to perform positioning and fixing. In this way, the light guide member 7 is positioned by the case 9, and the light guide member 7 is supported by the case 9.

尚、ここでは、ケース９に形成されたボス９６が切欠き５１を通過し、連結部７０の孔７Ａに嵌合される構造とした。しかし、この構造に限られるものではない。例えば、ライトガイド部材７が文字板５に支持される場合には、文字板５にボスを形成しておき、そのボスが連結部７０の孔７Ａ及び文字板５の孔に嵌合される構造としてもよい。この構造の場合、文字板５に形成されたボスによって、ライトガイド部材７を該文字板５に位置決めすることによって、該ケース９に固定された文字板５に固定することができる。 Here, the boss 96 formed on the case 9 passes through the notch 51 and is fitted into the hole 7A of the connecting portion 70. However, it is not limited to this structure. For example, when the light guide member 7 is supported by the dial plate 5, a boss is formed on the dial plate 5, and the boss is fitted into the hole 7 A of the connecting portion 70 and the hole of the dial plate 5. It is good. In the case of this structure, the light guide member 7 can be fixed to the dial 5 fixed to the case 9 by positioning the light guide member 7 on the dial 5 with a boss formed on the dial 5.

見返板６は、図３に示すように、見返板６をケース９に組付けた際にケース９寄りに位置する基端側が、厚さ方向に沿って表面板６Ａと裏面板６Ｂとに分岐されて断面逆Ｙ字型または断面逆Ｖ字形を有している。表面板６Ａと裏面板６Ｂの間には、内部空間が形成されている。表面板６Ａと裏面板６Ｂとの間の内部空間には、後述するライトガイド部材７の連結部７０が収容される。また、この見返板６の表面板６Ａには、ライトガイド部材７の後述する目盛部７１との間に、詳細は後述するが先端部嵌合手段３０を設けており、双方の間での確実な結合を行うのと同時に、双方の間での正確な位置決めを行う。 As shown in FIG. 3, when the facing plate 6 is assembled to the case 9, the facing plate 6 branches to the front surface plate 6 A and the back surface plate 6 B along the thickness direction. It has an inverted Y-shaped section or an inverted V-shaped section. An internal space is formed between the front plate 6A and the back plate 6B. A connecting portion 70 of the light guide member 7 described later is accommodated in the internal space between the front plate 6A and the back plate 6B. Further, the surface plate 6A of the facing plate 6 is provided with a tip end fitting means 30 between the scale portion 71 (to be described later) of the light guide member 7 (described later in detail). At the same time as performing the correct coupling, an accurate positioning between the two is performed.

ライトガイド部材７は、図３に示すように、文字板５の外周の一部又は全周に沿ってこれを囲設するような状態で、見返板６の内部空間に設置された、低背形状、つまり厚さＬの薄肉形状を有する連結部７０と、この連結部７０によって一体に連結された複数個の目盛部７１と、この目盛部７１から基端（−Ｚ）方向に突出し、文字板５の外周縁とケース９との間隙に設置される基端部７５と、を備えている。また、連結部７０、目盛部７１、及び基端部７５は、導光性を有する適宜材料で形成されている。 As shown in FIG. 3, the light guide member 7 is a low profile installed in the internal space of the dial plate 6 in a state of surrounding the dial plate 5 along a part or the entire circumference of the dial plate 5. A connecting portion 70 having a shape, that is, a thin-walled shape having a thickness L, a plurality of scale portions 71 integrally connected by the connecting portion 70, and protruding from the scale portion 71 in the base end (−Z) direction, And a base end portion 75 installed in a gap between the outer peripheral edge of the plate 5 and the case 9. Moreover, the connection part 70, the scale part 71, and the base end part 75 are formed with the appropriate material which has light guide property.

連結部７０は、全体略Ｃ字状（又はリング状）に形成されており、文字板５と表面板６Ａとの間に位置する状態で位置決めされるとともに、文字板５上に固定される。一方、目盛部７１は、細横幅で高さＨ（但し、Ｈ＞Ｌ）の高背形状を有している。この目盛部７１は、表面板６Ａに向けて起立している。目盛部７１は、後述する切欠溝６１Ａに嵌めこまれた状態においては、一部が切欠溝６１Ａから露出しており、その露出する部分は、特に視認者に向けて対面するような所定角度に傾斜している。 The connecting portion 70 is formed in a substantially C shape (or ring shape) as a whole, and is positioned while being positioned between the dial plate 5 and the front plate 6A, and is fixed on the dial plate 5. On the other hand, the scale portion 71 has a narrow shape and a high profile with a height H (however, H> L). The scale portion 71 stands up toward the surface plate 6A. The scale portion 71 is partly exposed from the notch groove 61A in a state where it is fitted in a notch groove 61A described later, and the exposed portion is at a predetermined angle particularly facing the viewer. Inclined.

なお、目盛部７１と目盛部７１とをつなぐ連結部７０は、低背形状であるので、その連結部７０では、表面積を低背の分だけ削減できる。従って、その表面積を抑えた分だけそこからの漏光量も削減可能となり、限られた光量の照明光に対して照明効率の向上も図ることができる。 In addition, since the connection part 70 which connects the scale part 71 and the scale part 71 is a low profile shape, in the connection part 70, a surface area can be reduced by the part of a low profile. Therefore, the amount of light leakage from the surface area can be reduced as much as the surface area is suppressed, and the illumination efficiency can be improved with respect to the limited amount of illumination light.

目盛部７１は、上述のように、文字板５と表面板６Ａから突出する形状である。目盛部７１は、このような構成により、立体発光照明を行うことができるようになっており、視認者に対して鮮明でかつ高級感のある照明意匠を与える。 As described above, the scale portion 71 has a shape protruding from the dial plate 5 and the front plate 6A. With such a configuration, the scale unit 71 can perform three-dimensional light emission, and gives a clear and high-quality lighting design to the viewer.

さらに、この目盛部７１は、基端部７５（図５及び図６参照）が光源３へ向けて突出している。基端部７５の基端面７２が、ガイド用の光源３からの照明光を受光させる受光部となる。基端面７２は、指針１０のある中心側に向かう内周の方が、光源３へ向かう突出量が少ない、断面テーパ状に形成される。このような形状を呈する基端面７２によれば、斜面とすることで受光部としての表面積を拡大させることができる。 Further, the scale portion 71 has a base end portion 75 (see FIGS. 5 and 6) protruding toward the light source 3. The base end surface 72 of the base end portion 75 serves as a light receiving portion that receives illumination light from the light source 3 for guide. The base end surface 72 is formed in a tapered shape with a small amount of protrusion toward the light source 3 on the inner periphery toward the center side where the pointer 10 is located. According to the base end surface 72 having such a shape, the surface area as the light receiving portion can be increased by forming the inclined surface.

即ち、光源３の光軸(Ｚ軸に平行)に沿った主要な照明光は、図６に示すように、基端面７２でスネルの法則に従って屈折後、目盛部７１の形状に略倣った主光路方向に誘導されて、内部導光することができる。その結果、照明効率の向上を効果的に図ることができる。しかも、前述したように、光源３からの照明光が、目盛部７１が搭載されている文字板５の矩形領域αからも透過し、目盛部７１へ効果的に入射する。そのため、照明効果、特に立体照明効果を大幅にアップさせる。 That is, the main illumination light along the optical axis of the light source 3 (parallel to the Z axis) is refracted by the Snell's law on the base end surface 72 and then substantially follows the shape of the scale portion 71 as shown in FIG. It is guided in the direction of the optical path and can be guided internally. As a result, it is possible to effectively improve the illumination efficiency. Moreover, as described above, the illumination light from the light source 3 is also transmitted from the rectangular region α of the dial plate 5 on which the scale portion 71 is mounted, and is effectively incident on the scale portion 71. Therefore, the lighting effect, particularly the three-dimensional lighting effect, is greatly improved.

また、ライトガイド部材７の目盛部７１の先端と見返板６の表面板６Ａの縁には、図３及び図５に示すように、凹部及び凸部からなる段部をそれぞれ有する先端部嵌合手段３０を備える。 Further, as shown in FIG. 3 and FIG. 5, tip end fittings each having a step portion made of a concave portion and a convex portion are provided at the tip end of the scale portion 71 of the light guide member 7 and the edge of the surface plate 6A of the facing plate 6. Means 30 are provided.

この先端部嵌合手段３０は、文字板５と表面板６Ａによるライトガイド部材７の支持の際に、表面板６Ａに対して目盛部７１を正確に位置決めして固定させるものである。本実施形態の先端部嵌合手段３０は、見返板６の表面板６Ａの縁に設けた段部６２のうち凸部が、ライトガイド部材７の目盛部７１の先端に設けた段部のうち凹部７３に嵌合する。 The front end fitting means 30 accurately positions and fixes the scale portion 71 with respect to the front plate 6A when the light guide member 7 is supported by the dial plate 5 and the front plate 6A. The tip end fitting means 30 of the present embodiment is such that the convex portion of the step portion 62 provided at the edge of the surface plate 6A of the facing plate 6 is the step portion provided at the tip of the scale portion 71 of the light guide member 7. It fits into the recess 73.

即ち、見返板６の方には、表面板６Ａに一定間隔で形成した切欠溝６１Ａの上縁部に段部６２を設ける一方、目盛部７１の方には先端に段部を設けた。このような段部が嵌合することにより、表面板６Ａの切欠溝６１Ａと目盛部７１との間を漏光のない状態に保持している。 That is, the facing plate 6 is provided with a stepped portion 62 at the upper edge of the notch groove 61A formed at regular intervals on the surface plate 6A, while the scale portion 71 is provided with a stepped portion at the tip. By fitting such a stepped portion, the gap between the cutout groove 61A of the surface plate 6A and the scale portion 71 is maintained in a state without light leakage.

この先端部嵌合手段３０では、見返板６の表面板６Ａとライトガイド部材７との双方に、凹凸からなる段部を設けてある。従って、長時間の使用の後に双方の間にかりに微細な隙間が発生したとしても、その隙間である先端部嵌合手段３０の凹凸部分では、照明光が多重散乱させることができる。そのため、光源３からの照明光は、殆どが目盛部７１から外部へ出射される一方、表面板６Ａの切欠溝６１Ａと目盛部７１との間の隙間から外部へ高輝度状態で漏光するのを効果的に抑止できる。 In the tip end fitting means 30, stepped portions made of unevenness are provided on both the surface plate 6 A of the facing plate 6 and the light guide member 7. Therefore, even if a fine gap is generated between the two after a long period of use, the illumination light can be multiple-scattered at the concavo-convex portion of the tip fitting means 30 that is the gap. For this reason, most of the illumination light from the light source 3 is emitted to the outside from the scale portion 71, while leaking to the outside through a gap between the notch groove 61 A of the surface plate 6 A and the scale portion 71 in a high luminance state. Effective deterrence.

反射板８は、指針軸４１を外側から囲設するような状態で基板２の上面（図２では左方）に設置されている。反射板８の裏面（図２では下面）には、基板２を介しケース９が反射板８を取り囲むような状態で設置されており、そのケース９の開口部分を裏カバー１１が覆う。 The reflecting plate 8 is installed on the upper surface (left side in FIG. 2) of the substrate 2 in such a manner as to surround the pointer shaft 41 from the outside. On the back surface (lower surface in FIG. 2) of the reflecting plate 8, a case 9 is installed so as to surround the reflecting plate 8 via the substrate 2, and the back cover 11 covers the opening portion of the case 9.

ケース９は、その一部に、ライトガイド部材７の支持手段として機能する支持部９１を有している。この支持部９１は、先端部分で見返板６の裏面板６Ｂを支持するものである。特に、この支持部９１には、図５に示すように、ライトガイド部材７の目盛部７１の裏面、つまり背面に突き当たるリブ９２を備えている。このリブ９２は、図６に示すように、先端である上端部分の内周面が目盛部７１の外面である背面に接触し、該目盛部７１を支持している。これにより、目盛部７１の外部と対面している表面７１Ｃを、文字板５の表面に対して所定の傾斜角度θ傾斜させた状態が維持される。また、ケース９は、図４に示すように、その一部が反射板８に連設されている。そして、その連設されている箇所の表面に、略円柱状のボス９６が形成されている。 The case 9 has a support portion 91 that functions as a support means for the light guide member 7 in a part thereof. The support portion 91 supports the back plate 6B of the facing plate 6 at the tip portion. Particularly, as shown in FIG. 5, the support portion 91 includes a rib 92 that abuts against the back surface of the scale portion 71 of the light guide member 7, that is, the back surface. As shown in FIG. 6, the rib 92 is in contact with the back surface, which is the outer surface of the scale portion 71, with the inner peripheral surface of the upper end portion, which is the tip, supporting the scale portion 71. Thereby, the state where the surface 71C facing the outside of the scale portion 71 is inclined at a predetermined inclination angle θ with respect to the surface of the dial 5 is maintained. Further, as shown in FIG. 4, a part of the case 9 is connected to the reflecting plate 8. And the substantially cylindrical boss | hub 96 is formed in the surface of the location currently provided.

次に、本実施形態の作用について、主に図２を参照しながら説明する。なお、ここでのメータ装置１Ａの説明は、各計器類のうち速度計を例に挙げてその作用を説明するが、特にこれに限定されるものではない。また、この作用については、他のアナログタイプのメータ装置の場合でも同様である。 Next, the operation of the present embodiment will be described mainly with reference to FIG. In addition, although description of the meter apparatus 1A here demonstrates the effect | action taking a speedometer as an example among each measuring instrument, it is not specifically limited to this. This operation is the same in the case of other analog type meter devices.

メータ装置１Ａのムーブメント４の内部に設けたモータが、図示しない速度センサによって検出された現在速度に対応するセンサ信号に基づいて回転駆動する。そして、これに一体に接続されている指針１０が回動し、文字板５の数字Ｆや文字板５と表面板６Ａとの間に突出した目盛Ｉを指示する。 A motor provided in the movement 4 of the meter device 1A is rotationally driven based on a sensor signal corresponding to a current speed detected by a speed sensor (not shown). Then, the pointer 10 integrally connected thereto rotates to indicate the number F of the dial plate 5 and the scale I protruding between the dial plate 5 and the front plate 6A.

即ち、センサ信号に基づき、モータ側の出力軸及びこれと一体の指針軸４１が所定の角速度で回転を始め、指針軸４１を取り付けた指針１０が所定角度だけ回動される。そして、指針１０の先で文字板５上に印字された特定の数字Ｆや、文字板５と表面板６Ａとの間から外部である表面に突出する細幅形状の目盛部７１を指し示す。これによって、現在速度を運転者などにアナログ表示させて知らせることができる。 That is, based on the sensor signal, the output shaft on the motor side and the pointer shaft 41 integrated therewith start to rotate at a predetermined angular velocity, and the pointer 10 attached with the pointer shaft 41 is rotated by a predetermined angle. Then, a specific number F printed on the dial plate 5 at the tip of the pointer 10 or a narrow-width scale portion 71 projecting from between the dial plate 5 and the front plate 6A to the outer surface is indicated. As a result, the current speed can be notified to the driver by analog display.

このような速度表示を行うメータ装置１Ａにあっては、特に夜間などの場合、ヘッドライトなどの点灯動作と同時に光源３も発光動作する。そして、光源３からは、図５に示す目盛部７１の受光部である基端面７２、及び文字板５の矩形状の透明部分である矩形領域αに向けて出射する。この場合、光源３から出射の照明光は、光軸（Ｚ）を最大光量とする光量分布である。 In the meter device 1A that performs such speed display, particularly at night, the light source 3 also emits light simultaneously with the lighting operation of a headlight or the like. Then, the light source 3 emits light toward a base end surface 72 that is a light receiving portion of the scale portion 71 shown in FIG. 5 and a rectangular region α that is a rectangular transparent portion of the dial plate 5. In this case, the illumination light emitted from the light source 3 has a light amount distribution with the optical axis (Z) as the maximum light amount.

従って、光軸に沿って基端面７２及び文字板５の矩形領域αの近傍に入射した大部分の照明光は、主光路に沿い、図６に示すようにその大部分が、目盛部７１内部を透過した後、目盛部７１から外部に向けて出射する。即ち、この照明光は、文字板５と表面板６Ａの表面から立体的に突出した目盛部７１の、特に、先端面７１Ｂ（図８参照）や表面７１Ｃから立体的に発光照明する。 Therefore, most of the illumination light incident along the optical axis near the base end surface 72 and the rectangular area α of the dial plate 5 follows the main optical path, and most of the illumination light is inside the scale portion 71 as shown in FIG. Then, the light is emitted from the scale portion 71 to the outside. That is, this illumination light emits and emits light three-dimensionally, particularly from the tip surface 71B (see FIG. 8) and the surface 71C of the scale portion 71 that protrudes three-dimensionally from the surfaces of the dial plate 5 and the front plate 6A.

次に、本実施形態の照明光について、図６に示す光路図などを参照しながら、さらに詳細に説明する。
図２に示す基板２上の各目盛部７１直下に搭載された光源３からの照明光は、光軸(Ｚ軸に平行)に沿った方向、つまり目盛部７１のある直上方向に沿って光量分布が最大となる。従って、光源３から出射し、光軸（Ｚ）方向に沿って進行する照明光は、反射板８と支持部９１との間の空間領域を進行する。そして、文字板５の目盛部７１が搭載されている矩形領域αに対応する領域及びライトガイド部材７の受光部である基端面７２に入射する。 Next, the illumination light of this embodiment will be described in more detail with reference to the optical path diagram shown in FIG.
Illumination light from the light source 3 mounted immediately below each scale portion 71 on the substrate 2 shown in FIG. 2 is a quantity of light along the direction along the optical axis (parallel to the Z axis), that is, directly above the scale portion 71. Distribution is maximized. Therefore, the illumination light emitted from the light source 3 and traveling along the optical axis (Z) direction travels in a spatial region between the reflecting plate 8 and the support portion 91. And it injects into the area | region corresponding to the rectangular area | region (alpha) in which the scale part 71 of the dial 5 is mounted, and the base end surface 72 which is a light-receiving part of the light guide member 7. FIG.

このうち、文字板５の裏面において矩形領域αに対応する所定領域から入射した主光路（以下、これを照明光δとよぶ）を進行する照明光は、その大部分が透光性を有する文字板５内部をそのまま上方へ進行する。そして、文字板５の矩形領域αを透過した照明光δは、出射直後に、目盛部７１の矩形形状を有する裏面７１Ａからその内部へ入射する。そして、目盛部７１内での照明光δは、専ら文字板５の半径方向の外側に向けて進行していく。つまり、視認者がこれを見ると、照明光δが細幅形状の目盛部７１から表面板６Ａの半径外側方向へ向けて輪状に広がっていくように、立体的に輝く光照明を生成させることができる。 Of these, most of the illumination light traveling on the main light path (hereinafter referred to as illumination light δ) incident from a predetermined area corresponding to the rectangular area α on the back surface of the dial plate 5 has translucency. The inside of the plate 5 proceeds upward as it is. And the illumination light (delta) which permeate | transmitted the rectangular area | region (alpha) of the dial 5 injects into the inside from the back surface 71A which has the rectangular shape of the scale part 71 immediately after emission. And the illumination light (delta) in the scale part 71 progresses toward the outer side of the radial direction of the dial 5 exclusively. That is, when the viewer sees this, three-dimensionally shining light illumination is generated so that the illumination light δ spreads in a ring shape from the narrow scale portion 71 toward the outer radial direction of the surface plate 6A. Can do.

一方、目盛部７１の受光部である基端面７２に入射した主光路を進行する照明光（これを照明光γとよぶ）は、スネルの法則に従い、基端面７２で目盛部７１の傾斜する方向へ屈折する。その後、目盛部７１の形状に倣った長手方向に誘導されながら、内部を案内されていく。これにより、基端面７２に入射する照明光γについても、目盛部７１の表面７１Ｃから出射後は、専ら文字板５の半径方向の外側に向けて進行していく。つまり、視認者がこれを見ると、照明光γが照明光δと同様、細幅形状の目盛部７１から表面板６Ａのある方向へ、輪状に広がっていくような印象をもたらす。 On the other hand, the illumination light that travels along the main optical path incident on the base end surface 72 that is the light receiving portion of the scale portion 71 (referred to as illumination light γ) is the direction in which the scale portion 71 is inclined at the base end surface 72 according to Snell's law. Refracts to. Thereafter, the inside is guided while being guided in the longitudinal direction following the shape of the scale portion 71. As a result, the illumination light γ incident on the base end surface 72 also proceeds toward the outside in the radial direction of the dial 5 after being emitted from the surface 71C of the scale portion 71. That is, when the viewer sees this, the illumination light γ has an impression that it spreads in a ring shape from the narrow scale portion 71 in the direction of the surface plate 6A, like the illumination light δ.

以上説明したように、本実施形態によれば、表面板６Ａと裏面板６Ｂの間に有する内部空間の内部に、従来のような目盛部７１と同等高さを有する高背構造の連結部を必要としない。換言すれば、目盛部７１どうしをつなぐ連結部７０は目盛部７１よりも低背構造で済む。そのため、従来の高背構造の連結部のように、連結部とほぼ同じ高さの目盛部に接する開口部の隙間から連結部を介して多くの照明光が漏光するといった現象を抑え、目立たないようにできる。また、ライトガイド部材７の連結部７０を構成する部分が低背構造で済む分、ライトガイド部材７製造の際の材料を節約でき、コストも削減できる。しかも、目盛部７１間の低背状態の連結部７０の表面積も、低背の分だけ削減することが容易に可能となるので、そこからの漏光量も削減可能となり、照明効率もアップする。 As described above, according to the present embodiment, the connecting portion having a high-profile structure having a height equivalent to that of the conventional scale portion 71 is provided in the internal space between the front plate 6A and the back plate 6B. do not need. In other words, the connecting portion 70 that connects the scale portions 71 may have a lower profile than the scale portion 71. Therefore, like a conventional high-profile connection part, the phenomenon that a lot of illumination light leaks through the connection part from the gap of the opening part that is in contact with the scale part of almost the same height as the connection part is suppressed and is not noticeable. You can Further, since the portion constituting the connecting portion 70 of the light guide member 7 has a low-profile structure, the material for manufacturing the light guide member 7 can be saved, and the cost can be reduced. Moreover, since the surface area of the low-profile connecting portion 70 between the scale portions 71 can be easily reduced by the amount corresponding to the low profile, the amount of light leakage from the surface can be reduced, and the illumination efficiency is improved.

また、本実施形態の照明構造を有するメータ装置１Ａによれば、照明効率の大幅な向上を図ることができ、特に立体照明効果を大幅にアップさせることができるようになる。別言すれば、目盛部７１が立体的に輝く発光照明を実現できる。これにより、見栄えやデザイン性が高いだけではなく、高級感のある照明構造を付与できる。 Further, according to the meter device 1A having the illumination structure of the present embodiment, it is possible to greatly improve the illumination efficiency, and in particular, it is possible to greatly improve the stereoscopic illumination effect. In other words, it is possible to realize light-emitting illumination in which the scale portion 71 shines three-dimensionally. Thereby, not only the appearance and design are high, but also a high-quality lighting structure can be provided.

さらに、本実施形態によれば、基部嵌合手段２０及び先端部嵌合手段３０により、文字板５、見返板６、ライトガイド部材７、及びケース９の４体を、互いに高精度で、しかも常時安定した状態に固定保持できる。その結果、特に、自動車などのような振動が長期間にわたって作用することが予想される乗り物に設置することなどを考慮すると、その効果が大きく期待される。 Furthermore, according to the present embodiment, the base body fitting means 20 and the tip end fitting means 30 allow the dial plate 5, the dial plate 6, the light guide member 7, and the case 9 to be highly accurate with respect to each other. Can be fixed and held in a stable state at all times. As a result, the effect is greatly expected particularly when considering installation in a vehicle where vibrations such as automobiles are expected to act for a long period of time.

さらに、本実施形態によれば、ライトガイド部材７の連結部７０はケース９に支持されるため、従来のようにライトガイド部材の連結部を収容し位置決めする収容壁を見返板に別途設ける必要がない。このため、見返板の成形時にこの収容壁の形成に伴うウェルドラインが生じることがなく、したがって、見返板の見栄えを向上させることができる。 Furthermore, according to this embodiment, since the connection part 70 of the light guide member 7 is supported by the case 9, it is necessary to separately provide an accommodation wall for accommodating and positioning the connection part of the light guide member on the return plate as in the prior art. There is no. For this reason, a weld line associated with the formation of the housing wall does not occur when the facing plate is formed, and thus the appearance of the facing plate can be improved.

（第２の実施形態）
次に、本発明に係る照明構造が適用された第２の実施形態に係るメータ装置１Ｂについて、図面を参照しながら詳細に説明する。なお、本実施形態において、第１の実施形態と同一部分には同一符号を付して重複説明を避ける。 (Second Embodiment)
Next, a meter device 1B according to a second embodiment to which the illumination structure according to the present invention is applied will be described in detail with reference to the drawings. In the present embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals to avoid redundant description.

図７から図９は、本発明の第２の実施形態に係るメータ装置１Ｂの要部を示すものであり、このメータ装置１Ｂが第１の実施形態のメータ装置１Ａと異なる主な点は、次の点である。すなわち、見返板６の表面板６Ａとライトガイド部材７の目盛部７１との組付け手段として先端部嵌合手段３０とは異なる先端部嵌合手段を有していることと、支持部９１に湾曲した反射面９３を有することである。 7 to 9 show the main part of the meter device 1B according to the second embodiment of the present invention, and the main point that this meter device 1B is different from the meter device 1A of the first embodiment is that It is the next point. That is, as a means for assembling the surface plate 6A of the facing plate 6 and the scale portion 71 of the light guide member 7, a tip end fitting means different from the tip end fitting means 30 is provided, and And having a curved reflecting surface 93.

さらに、本実施形態では、目盛部７１の受光部となる基端面７２を有する突出した基端部７５が、文字板５と支持部９１との間の、クリアランスを設けた状態にある隙間に挿入配置される。即ち、この実施形態では、図９に示すように、特にこれら３体の部品加工精度のばらつきなどによる組付け誤差を解消させるため、文字板５と基端部７５の間にある程度の遊び(クリアランス)ｄ１を有する。同じく、支持部９１と基端部７５との間にも遊びｄ２を有する。 Further, in the present embodiment, the protruding proximal end portion 75 having the proximal end surface 72 serving as the light receiving portion of the scale portion 71 is inserted into a gap between the dial plate 5 and the support portion 91 in a state where a clearance is provided. Be placed. That is, in this embodiment, as shown in FIG. 9, a certain amount of play (clearance) is formed between the dial plate 5 and the base end portion 75 in order to eliminate assembling errors due to variations in the machining accuracy of these three parts. ) d1. Similarly, there is play d 2 between the support portion 91 and the base end portion 75.

先端部嵌合手段である鉤状部４０は、図８に示すように、ライトガイド部材７の目盛部７１の先端と、表面板６Ａに切り欠いた切欠溝６１Ａの縁とに設けられている。この鉤状部４０は、先端部嵌合手段３０と同様に、精度の良好な組付けができるとともに常時安定した固定状態を保持できる。 As shown in FIG. 8, the hook-shaped portion 40 that is the tip portion fitting means is provided at the tip of the scale portion 71 of the light guide member 7 and the edge of the notch groove 61 A cut out in the surface plate 6 A. . As with the tip end fitting means 30, the hook-shaped portion 40 can be assembled with high accuracy and can always maintain a stable fixed state.

このように、本実施形態の鉤状部４０は、互いに嵌合する凹部６３Ａ、７４Ａ及び凸部６３，７４をそれぞれ設け、互いに凹部６３Ａ、７４Ａで凸部６３，７４を噛み込んで嵌合させる。 As described above, the bowl-shaped portion 40 of the present embodiment is provided with the concave portions 63A and 74A and the convex portions 63 and 74 that are fitted to each other, and the convex portions 63 and 74 are engaged with each other by the concave portions 63A and 74A. .

次に、反射面９３は、図９に示すように、リブ９２から延びた、目盛部７１の背面７１Ｄ（以下、外周面とよぶ）と対面する支持部９１の表面９２Ａ側に、目盛部７１の外周面７１Ｄから漏れる照明光εを反射して再び目盛部７１へ戻すものである。このため、反射面９３となる、支持部９１に設けたリブ９２の表面９２Ａ、つまり内周面には、適宜の反射膜あるいは鏡面加工処理が施されている。さらに、反射面９３は、目盛部７１に対して凹状に湾曲した曲面で形成されている。反射面９３が曲面で形成されることによっても、目盛部７１の外周面７１Ｄから漏れる照明光εを再び目盛部７１へ戻すことに寄与している。 Next, as shown in FIG. 9, the reflecting surface 93 extends from the rib 92, on the surface 92 A side of the support portion 91 facing the back surface 71 D (hereinafter referred to as the outer peripheral surface) of the scale portion 71. The illumination light ε leaking from the outer peripheral surface 71D is reflected back to the scale portion 71 again. For this reason, the surface 92A of the rib 92 provided on the support portion 91 serving as the reflection surface 93, that is, the inner peripheral surface, is subjected to an appropriate reflection film or mirror finishing process. Further, the reflecting surface 93 is formed as a curved surface curved in a concave shape with respect to the scale portion 71. The formation of the reflecting surface 93 as a curved surface also contributes to returning the illumination light ε leaking from the outer peripheral surface 71D of the scale portion 71 to the scale portion 71 again.

次に、本実施形態の照明光について、図９に示す光路図を参照しながら説明する。
光源３から出射し、光軸（Ｚ）方向に沿って進行する照明光は、反射板８と支持部９１との間の空間領域を進行する。そして、目盛部７１での受光部である基端面７２とともに、文字板５裏面の、矩形領域αに対応する透光性の領域にも入射する。 Next, the illumination light of this embodiment will be described with reference to the optical path diagram shown in FIG.
Illumination light emitted from the light source 3 and traveling along the optical axis (Z) direction travels in a spatial region between the reflecting plate 8 and the support portion 91. Then, the light enters the translucent area corresponding to the rectangular area α on the back surface of the dial 5 together with the base end face 72 which is a light receiving part in the scale part 71.

文字板５裏面の、矩形領域αに対応する透光性領域から入射した照明光は、その多くが透光性を有する文字板５内部をそのまま上方へ進行する。そして、文字板５表面の矩形領域αを透過した照明光は、そのまま目盛部７１の裏面７１Ａから内部に入射するが、その多くが表面７１Ｃにおいて外界との界面で屈折して外部へ透過していく。また、その一部はフレネル反射を起こして目盛部７１の内部へ戻るものもある。 Most of the illumination light incident from the translucent area corresponding to the rectangular area α on the back surface of the dial 5 travels upward through the dial 5 having translucency. And the illumination light which permeate | transmitted the rectangular area | region (alpha) of the dial 5 surface injects into the inside from the back surface 71A of the scale part 71 as it is, Most of it is refracted | sucked at the interface with the external field in the surface 71C, and permeate | transmitted outside. Go. Some of them return to the inside of the scale portion 71 by causing Fresnel reflection.

その結果、目盛部７１内部を進行後、その外周面７１Ｄで屈折して外部、つまり目盛部７１と支持部９１のリブ９２との間の空間へ漏光する照明光εは、反射面９３で反射する。これにより、照明光εは、目盛部７１へ向かい外周面７１Ｄで屈折して目盛部７１へ再入射する。これにより、漏光して利用できなかった照明光εも、目盛部７１の照明光として有効利用できる。 As a result, after traveling through the scale portion 71, the illumination light ε that refracts at the outer peripheral surface 71 D and leaks to the outside, that is, the space between the scale portion 71 and the rib 92 of the support portion 91 is reflected by the reflection surface 93. To do. Accordingly, the illumination light ε is refracted at the outer peripheral surface 71 D toward the scale portion 71 and reenters the scale portion 71. Thereby, the illumination light ε that cannot be used due to light leakage can also be effectively used as the illumination light for the scale portion 71.

以上、本実施形態によれば、鉤状部４０の凸部６３，７４により、互いに相手側の凹部６３Ａ、７４Ａへ嵌合することで、目盛部７１の組み付けの際に位置決め精度を確保できる。 As described above, according to the present embodiment, the convex portions 63 and 74 of the bowl-shaped portion 40 are fitted to the concave portions 63A and 74A on the other side, so that the positioning accuracy can be ensured when the scale portion 71 is assembled.

しかも、鉤状部４０の凹凸部分が存在することで、目盛部７１と切欠溝６１Ａとの間に隙間を生じたような場合であっても、見返板６内部で漏光した光源３からの照明光の一部がその隙間から外部へ漏出するのを、鉤状部４０の凹凸部分で減衰させることもできる。 Moreover, even if there is a gap between the scale portion 71 and the cutout groove 61A due to the presence of the concave and convex portions of the bowl-shaped portion 40, illumination from the light source 3 that has leaked light inside the dial plate 6 The leakage of a part of the light from the gap to the outside can be attenuated by the uneven portion of the bowl-shaped portion 40.

さらに、反射面９３が照明光を反射することで、漏光して利用されなかった照明光を、目盛部７１の照明光として有効利用できる。 Furthermore, since the reflecting surface 93 reflects the illumination light, the illumination light that has not been used due to light leakage can be effectively used as the illumination light for the scale portion 71.

（第３の実施形態）
次に、本発明に係る照明構造が適用された第３の実施形態に係るメータ装置１Ｃについて、図面を参照しながら詳細に説明する。なお、本実施形態において、第１、第２の実施形態と同一部分には同一符号を付して重複説明を避ける。 (Third embodiment)
Next, a meter device 1C according to a third embodiment to which the illumination structure according to the present invention is applied will be described in detail with reference to the drawings. In the present embodiment, the same parts as those in the first and second embodiments are denoted by the same reference numerals to avoid redundant description.

図１０及び図１１は、本発明の照明構造が適用された、第３の実施形態に係るメータ装置１Ｃを示すものであり、このメータ装置１Ｃが第２の実施形態のメータ装置１Ｂと異なる点は、見返板６の表面板６Ａと目盛部７１との先端部嵌合手段として、鉤状部４０とは異なる楔状を有するもの（以下、楔状部５０とよぶ）を用いたことである。 10 and 11 show a meter device 1C according to the third embodiment to which the illumination structure of the present invention is applied. The meter device 1C is different from the meter device 1B according to the second embodiment. This means that a tip having a wedge shape (hereinafter referred to as a wedge-shaped portion 50) different from the flange-shaped portion 40 is used as the tip portion fitting means between the surface plate 6A and the scale portion 71 of the facing plate 6.

即ち、本実施形態の楔状部５０は、表面板６Ａの切欠溝６１Ａと目盛部７１の先端に設けられている。切欠溝６１Ａの凸部６４は、目盛部７１の表面７１Ｃから背面７１Ｄにかけて傾斜した斜面を有する。これにより、凸部６４の先端面は、指針１０のある文字板５中心方向に向かう。一方、凸部６４に嵌合する目盛部７１の凹部７６は、凸部６４の斜面に接触するため、凸部６４の斜面とは反対向きに傾斜した斜面を有する。 That is, the wedge-shaped part 50 of this embodiment is provided at the front end of the notch groove 61A and the scale part 71 of the surface plate 6A. The convex portion 64 of the notch groove 61A has a slope that is inclined from the front surface 71C of the scale portion 71 to the rear surface 71D. Thereby, the front end surface of the convex part 64 goes to the dial 5 center direction with the pointer 10. On the other hand, the concave portion 76 of the scale portion 71 fitted to the convex portion 64 has a slope inclined in the opposite direction to the slope of the convex portion 64 in order to contact the slope of the convex portion 64.

このような構成にすることで、例えば図１０（Ｂ）におけるＳ方向からの外光が入射してきたとしても、その外光に起因した切欠溝６１Ａの凸部６４の不要な影が視認者からは目視され難い構造になっている。 With such a configuration, for example, even when external light from the S direction in FIG. 10B has entered, unnecessary shadows on the convex portions 64 of the notch groove 61A caused by the external light are visible from the viewer. The structure is difficult to see.

さらに、本実施形態では、図１１に示すように、目盛部７１の外周面７１Ｄは、支持部９１の内周面９４，９５に沿った形状である。このため、目盛部７１の外周面７１Ｄは、支持部９１の内周面９４，９５に密着する。この結果、目盛部７１の外周面７１Ｄから漏光する照明光ζを反射させ再入射させることができる。このため、目盛部７１の外周面からの漏光を回避でき、照明効率を高めることができる。 Furthermore, in this embodiment, as shown in FIG. 11, the outer peripheral surface 71 D of the scale portion 71 has a shape along the inner peripheral surfaces 94 and 95 of the support portion 91. For this reason, the outer peripheral surface 71 D of the scale portion 71 is in close contact with the inner peripheral surfaces 94 and 95 of the support portion 91. As a result, the illumination light ζ leaking from the outer peripheral surface 71D of the scale part 71 can be reflected and re-entered. For this reason, the light leakage from the outer peripheral surface of the scale part 71 can be avoided, and illumination efficiency can be improved.

以上、本実施形態によれば、図１１に示すような各光路を辿って各照明光がライトガイド部材７の目盛部７１に入射すると、支持部９１の内周面９５及びリブ９２の内周面９４でそれぞれ反射して目盛部７１に再入射できる。これにより、反射面となる専用の反射膜を態々積極的に塗布させなくても、照明光の漏光を防止できるので、コストの削減が図れる。 As described above, according to the present embodiment, when each illumination light enters the scale portion 71 of the light guide member 7 along each optical path as shown in FIG. 11, the inner peripheral surface 95 of the support portion 91 and the inner periphery of the rib 92. The light can be reflected on the surface 94 and re-entered on the scale portion 71. Accordingly, the leakage of illumination light can be prevented without actively applying a dedicated reflective film as a reflective surface, thereby reducing the cost.

さらに、本実施形態によれば、楔状部５０を有するので、第２の実施形態の場合と同様、目盛部７１と表面板６Ａの切欠溝６１Ａとの間にわずかな隙間が形成された場合でも、楔状部分で散乱させることができる。つまり、その隙間か照明光が外部へ漏光するのを防止できる。その結果、照明効果に質的低下がもたらされるのを防止できる。 Furthermore, according to the present embodiment, since the wedge-shaped portion 50 is provided, even when a slight gap is formed between the scale portion 71 and the notch groove 61A of the surface plate 6A as in the case of the second embodiment. Can be scattered by the wedge-shaped part. That is, it is possible to prevent the illumination light from leaking outside through the gap. As a result, it is possible to prevent the quality of the lighting effect from being deteriorated.

なお、本発明は、上述した実施形態に何ら限定されるものではなく、その要旨を逸脱しない範囲において種々の形態で実施し得るものである。例えば、上記した各実施形態では、光源として、目盛部、指針、文字板での数字などの意匠部分をそれぞれ別個の専用光源で照明させているが、単一のもの、又は単一種類のものを複数個設置して供用させてもよい。また、上記各実施形態では、支持部９１をケース９に一体に設けたが、ケース９とは別個独立した別体のものとして設けてもよい。 In addition, this invention is not limited to embodiment mentioned above at all, In the range which does not deviate from the summary, it can implement with a various form. For example, in each of the above-described embodiments, as a light source, a design portion such as a scale portion, a pointer, and a number on a dial plate is illuminated with a separate dedicated light source. You may install and use two or more. In each of the above embodiments, the support portion 91 is provided integrally with the case 9. However, the support portion 91 may be provided separately from the case 9.

また、本発明の照明構造が適用されたメータ装置としては、例えば本実施形態のスピードメータ部の他に、例えば、タコメータ部、燃料計部、及び水温計等の各種計器類への適用が可能である。特に、本発明の照明構造が適用されたメータ装置では、光源からの限られた光量の照明光を効率的に利用して、漏れの少ない高品質の立体照明を実現させることが可能となるばかりか、組付付けの際の作業性の向上や組み付け精度の向上なども同時に図ることができるので、便宜である。 Further, as a meter device to which the illumination structure of the present invention is applied, for example, in addition to the speedometer unit of the present embodiment, it can be applied to various instruments such as a tachometer unit, a fuel meter unit, and a water temperature meter. It is. In particular, in a meter device to which the illumination structure of the present invention is applied, it is possible to realize high-quality stereoscopic illumination with little leakage by efficiently using a limited amount of illumination light from a light source. In addition, it is convenient because it is possible to improve workability during assembly and improve assembly accuracy at the same time.

１Ａ、１Ｂ、１Ｃメータ装置
２基板
２０基部嵌合手段
３光源
３０先端部嵌合手段
４ムーブメント
４０鉤状部
４１指針軸
５文字板
５０楔状部
５１切欠き
６見返板
６Ａ表面板
６Ｂ裏面板
６１内周面
６１Ａ切欠溝
６２、６３、６４凸部
６３Ａ凹部
７ライトガイド部材
７Ａ孔
７０連結部
７１目盛部
７１Ａ裏面
７１Ｂ先端面
７１Ｃ表面
７１Ｄ背面（外周面）
７２基端面
７３、７４Ａ、７６凹部
７４凸部
７５基端部
８反射板
９ケース
９１支持部
９２リブ
９２Ａ表面
９３湾曲した反射面
９４，９５内周面
９６ボス
１０指針
１１裏カバー
１２ＬＣＤ（トリップメータ）
１３ＬＣＤ用光源
１４指針照明用の光源
１５カバーガラス
ｄ１遊び(クリアランス)
ｄ２遊び
Ｆ数字（意匠）
Ｉ目盛
θ 傾斜角度
α 領域（透光部分；矩形領域）
β 領域（不透光部分）
γ 主光路（照明光）
δ 照明光
ε 照明光
ζ 照明光 1A, 1B, 1C Meter device 2 Substrate 20 Base fitting means 3 Light source 30 Tip fitting means 4 Movement 40 Hook-like portion 41 Pointer shaft 5 Dial plate 50 Wedge-like portion 51 Notch 6 Look-back plate 6A Surface plate 6B Back plate 61 Inner peripheral surface 61A Notch groove 62, 63, 64 Convex portion 63A Concave portion 7 Light guide member 7A Hole 70 Connecting portion 71 Scale portion 71A Back surface 71B Tip surface 71C Surface 71D Back surface (outer peripheral surface)
72 Base end face 73, 74A, 76 Concavity 74 Projection 75 Base end 8 Reflector 9 Case 91 Supporting part 92 Rib 92A Surface 93 Curved reflecting surface 94, 95 Inner peripheral surface 96 Boss 10 Pointer 11 Back cover 12 LCD (trip) Meter)
13 Light source for LCD 14 Light source for pointer illumination 15 Cover glass d1 Play (clearance)
d2 Play F Number (Design)
I Scale θ Inclination angle α area (translucent part: rectangular area)
β region (opaque part)
γ Main light path (illumination light)
δ illumination light ε illumination light ζ illumination light

Claims

Dial and
A case surrounding the outer periphery of the dial,
A dial plate that surrounds a part or the entire circumference of the dial and is assembled to the case in a state of standing with respect to the dial;
A base end portion installed in a gap between an outer peripheral edge of the dial and the case; and a projection projecting from the base end portion toward the dial plate so as to stand up with respect to the dial. And a light guide member having a scale portion located between the facing plate and a connecting portion for connecting the adjacent scale portions,
A light source that makes illumination light incident toward a base end surface of the base end portion;
An illumination structure for a meter device, comprising:

Steps that fit together are formed on the tip of the scale part, and the facing plate that contacts the tip of the scale part.
The illumination structure for a meter device according to claim 1.

The tip of the scale part, and the counter plate contacting the tip of the scale part are each formed with a hook-like part that bites and fits a convex part with a concave part,
The illumination structure for a meter device according to claim 1.

The tip of the scale part, and the facing plate that contacts the tip of the scale part are each formed with a wedge-like part that engages with a convex part in close contact with the concave part,
The wedge-shaped portion has an inclined surface of the convex portion and a surface of the concave portion fitted to the convex portion.
The illumination structure for a meter device according to claim 1.

The case has a rib that comes into contact with the scale portion.
The illumination structure of the meter device according to any one of claims 1 to 4, wherein

The illumination structure for a meter device according to any one of claims 1 to 5, wherein the case has a reflective surface whose surface facing the scale portion is concavely curved with respect to the scale portion.

7. The meter according to claim 1, wherein one of the connecting portion and the case has a boss and the other has a hole into which the boss is fitted. The lighting structure of the device.