JP3747466B2 - Instrument device - Google Patents

Instrument device Download PDF

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Publication number
JP3747466B2
JP3747466B2 JP2003094848A JP2003094848A JP3747466B2 JP 3747466 B2 JP3747466 B2 JP 3747466B2 JP 2003094848 A JP2003094848 A JP 2003094848A JP 2003094848 A JP2003094848 A JP 2003094848A JP 3747466 B2 JP3747466 B2 JP 3747466B2
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Japan
Prior art keywords
display
light source
circuit board
drive shaft
pointer
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JP2003094848A
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Japanese (ja)
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JP2004301663A (en
Inventor
成生 松村
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Nippon Seiki Co Ltd
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Nippon Seiki Co Ltd
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Priority to JP2003094848A priority Critical patent/JP3747466B2/en
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Description

【0001】
【発明の属する技術分野】
本発明は、例えば自動車等の車両に搭載される計器装置に関し、特にその照明構造に特徴を有する計器装置に関する。
【0002】
【従来の技術】
従来、この種の計器装置として、回路基板に駆動軸を突設した計器本体を装着し、駆動軸の先端に回動中心部より光供給を受けて光輝する指針を装着し、この指針の背後に、指針の回動軌道に沿って目盛や文字やマークなどの透光性の表示部が配された表示板を配置し、この表示板の背後に配置した光源により、表示板の表示部を照明するものが知られている。
【0003】
具体的には、回路基板の背後に配置され駆動軸が前方に延びる計器本体と、前記駆動軸の先端側に装着される指針と、この指針と前記回路基板との間に配置され前記指針に対応する表示部を有する表示板と、前記駆動軸を中心とした同心円上に複数個配置され前記表示部を照明する光源と、前記表示板と前記回路基板との間に配置される反射体とを備え、前記反射体は前記光源と対向し前記光源からの照明光を外周に反射する第1の反射部と、前記光源を取り巻くように前記表示板側に反射する第2の反射部とを備えるもので、表示板の照明に際して、導光体を廃止でき、安価で軽量化を達成できるものであった(例えば、特許文献1参照)。
【0004】
【特許文献1】
特開2001−99685号公報(図4,図7)
【0005】
【発明が解決しようとする課題】
しかしながら、従来の計器装置の場合、速度計やエンジン回転計などの表示面積の大きい計器に比べて、燃料計や冷却水温計などの表示面積の小さい計器の場合、表示板の面積が小さいため表示部を配置するスペースがなく、特に、目盛や文字に比べてマークは指針の駆動軸の近傍に設けられることがある。このように表示部を指針の駆動軸の近傍に設けた場合、特許文献1のような構造では、駆動軸の中心とした同心円上に設けられた光源からの光を外周に反射する第1の反射部を備えているために、指針の駆動軸の近傍に設けられた表示部を照明することができないという問題があった。
【0006】
そこで、本発明は、この点に鑑みてなされたもので、その主な目的は、導光体を廃止でき、安価で軽量化を達成でき、指針の駆動軸の近傍に設けた表示部を照明することが可能な計器装置を提供するものである。
【0007】
【課題を解決するための手段】
本発明は前記目的を達成するため、回路基板と、駆動軸が前方に延びる計器本体と、前記駆動軸に装着される指針と、この指針と前記回路基板との間に配置され前記駆動軸から離れた部分に位置する第1の表示部と前記駆動軸の近傍に位置する第2の表示部を有する表示板と、この表示板周囲を覆う見返し部材と、前記回路基板の前方側に配置されるとともに前記第1,第2の表示部を照明する光源と、前記表示板と前記回路基板との間に配置される反射体とを備え、前記計器本体を前記回路基板の背後に設け、前記光源を前記見返し部材に対応する部分でかつ前記第1,第2の表示部に光を放射可能に配置し、前記反射体に前記光源と対向し前記光源からの照明光を前記駆動軸側に反射する第1の反射部と、前記光源を取り巻くように前記表示板とは適宜空間を空けて延長し前記照明光を前記表示板側に反射する第2の反射部とを設けたものである。
【0008】
また、本発明は、回路基板と、駆動軸が前方に延びる計器本体と、前記駆動軸に装着される指針と、この指針と前記回路基板との間に配置され前記駆動軸から離れた部分に位置する第1の表示部と前記駆動軸の近傍に位置する第2の表示部を有する表示板と、この表示板周囲を覆う見返し部材と、前記回路基板の前方側に配置されるとともに前記第1,第2の表示部を照明する光源と、前記表示板と前記回路基板との間に配置される反射体とを備え、前記計器本体を前記回路基板の背後に設け、前記光源を前記見返し部材に対応する部分でかつ前記第1,第2の表示部に光を放射可能であるとともに前記回路基板の板面方向に光を発するように設け、前記反射体に前記光源を取り巻くように前記表示板とは適宜空間を空けて延長し前記光源からの照明光を前記表示板側に反射する反射部を設けたものである。
【0009】
また、本発明は、前記回路基板の前記駆動軸の周囲に設けられ前記指針を照明する指針用光源と、この指針用光源を収納するハウジングを形成する壁とを備え、前記壁に前記光源からの照明光を前記表示板側に反射する反射面を設けたものである。
【0010】
【発明の実施の形態】
本発明の計器装置は、回路基板1と、駆動軸2が前方に延びる計器本体3と、駆動軸2に装着される指針4と、この指針4と回路基板1との間に配置され駆動軸2から離れた部分に位置する第1の表示部51aと駆動軸2の近傍に位置する第2の表示部51bを有する表示板5と、この表示板5周囲を覆う見返し部材9と、回路基板1の前方側に配置されるとともに第1,第2の表示部51a,51bを照明する光源である表示板用光源7と、表示板5と回路基板1との間に配置される反射体であるケース体8とを備え、計器本体3を回路基板1の背後に設け、表示板用光源7を見返し部材9に対応する部分でかつ第1,第2の表示部51a,51bに光を放射可能に配置し、ケース体8に表示板用光源7と対向し表示板用光源7からの照明光を駆動軸2側に反射する第1の反射部85と、表示板用光源7を取り巻くように表示板5とは適宜空間を空けて延長し前記照明光を表示板5側に反射する第2の反射部86とを設けたものである。このように構成したことにより、導光体を廃止でき、安価で軽量化を達成でき、指針の駆動軸の近傍に設けた表示部を照明することが可能な計器装置を提供するものである。
【0011】
また、回路基板1と、駆動軸2が前方に延びる計器本体3と、駆動軸2に装着される指針4と、この指針4と回路基板1との間に配置され駆動軸2から離れた部分に位置する第1の表示部51aと駆動軸2の近傍に位置する第2の表示部51bを有する表示板5と、この表示板5周囲を覆う見返し部材9と、回路基板1の前方側に配置されるとともに駆動軸4側に光を発し第1,第2の表示部51a,51bを照明する表示板用光源11と、表示板5と回路基板1との間に配置される反射体であるケース体8とを備え、計器本体3を回路基板1の背後に設け、表示板用光源11を見返し部材9に対応する部分でかつ第1,第2の表示部51a,51bに光を放射可能であるとともに回路基板1の板面方向に光を発するように設け、ケース体8に表示板用光源11を取り巻くように表示板5とは適宜空間を空けて延長し表示板用光源11からの照明光を表示板5側に反射する反射部87を設けたものである。このように構成したことにより、導光体を廃止でき、安価で軽量化を達成でき、指針の駆動軸の近傍に設けた表示部を照明することが可能な計器装置を提供するものである。
【0012】
また、回路基板1の駆動軸2の周囲に設けられ指針4を照明する指針用光源6と、指針用光源6を収納するハウジング81を形成する壁83とを備え、壁83に表示板用光源11からの照明光を表示板5側に反射する反射面84を設けたものである。このように構成したことにより、導光体を廃止でき、安価で軽量化を達成でき、指針の駆動軸の近傍に設けた表示部を照明することが可能な計器装置を提供するものである。
【0013】
【実施例】
図1から図4は本発明の第1実施例を示すもので、以下、本発明を例えば自動車の計器装置に適用した場合について説明する。
【0014】
本実施例による計器装置Mは、図1に示すように、燃料計Fと冷却水温計Tとオートマチックトランスミッションのギアポジションを表示するギアインジケータGとを備えている。燃料計Fと冷却水温計Tは、回路基板1と、この回路基板1に導通装着され駆動軸2が前方に延びる計器本体3と、駆動軸2にて回転駆動される指針4と、この指針4と回路基板1との間に位置する表示板5と、指針4を照明する指針用光源6と、表示板5を照明する表示板用光源7と、回路基板1と表示板5との間に配置される反射体であるケース体8と、指針4や表示板5を露出させるための見返し部材9とから構成される。
【0015】
回路基板1は、例えばガラスエポキシ系基材に配線パターン(図示せず)を施した硬質回路基板からなり、指針用光源6と、表示板用光源7と、例えば計器本体3の駆動・制御を行う駆動手段(図示せず)や例えば抵抗、コンデンサ等の各種回路部品(図示せず)が前記配線パターンに導通接続されている。
【0016】
計器本体3は、可動磁石式計器またはステッピングモータからなり、駆動軸2が回路基板1を貫通するように、その主要部が回路基板1の背後に装着され、且つ半田付け等の適宜導通手段により前記配線パターン(前記駆動手段)に電気接続される。
【0017】
指針4は、透光性合成樹脂からなり、線状に延びる指示部41と、この指示部41の回転中心部外周を覆う遮光性合成樹脂からなるキャップ42とを備えており、指示部41の先端側が表示板5の後述する表示部構成する目盛を指示している。また、指示部41の前記回転中心部には、背後に配置された指針用光源6から発せられる光を受光する受光部43と、この受光した光を指示部41の先端側に反射導光する反射部44が形成されている。
【0018】
表示板5は、指針4の回転軌道に沿った円弧状の配列形状を有し指針4の指示部41の指示対象となる目盛51a,数字(図示していない)及びマーク51bからなる表示部51と、この表示部51の背景を形成する背景部52とを有している。表示部51の中で、目盛51aなどは駆動軸2から離れた部分に位置する第1の表示部であり、指示部41の先端側が回動する軌跡に沿って設けられており、マーク51bは駆動軸2の近傍に位置する第2の表示部であり、キャップ42の近くに設けられている。これら第1,第2の表示部51a,51b、背景部52は透光性合成樹脂からなる薄板状の基材53の前面に形成された印刷層からなり、第1,第2の表示部51a,51bは白色系の透光性インクにより形成され、表示板用光源7によって透過照明される。また、背景部52は黒色系の遮光性インクにより形成されている。なお、これら第1,第2の表示部51a,51b、背景部52の各印刷層はスクリーン印刷等の手段を用いて印刷形成されている。
【0019】
指針用光源6は、例えば赤色光を発するチップ型発光ダイオードからなり、指針4の回転中心近傍に複数個配置され、受光部43を通じて指針4の指示部41を赤色に発光させる発光体である。
【0020】
表示板用光源7は、例えば白色光を発するチップ型発光ダイオードからなり、第1,第2の表示部51a,51bの直下及びその近傍を除いた可視範囲外で、かつ第1,第2の表示部51a,51bに光を放射可能に配置してあり、本実施例においては、見返し部材9に対応する部分に配置されている。ここで、第1,第2の表示部51a,51bに光を放射可能とは、図1で示すように、計器装置Mを正面から見た場合に、表示板用光源7と各第1,第2の表示部51a,51bとを直線で結べることを意味するものである。なお、表示板用光源7は、第1,第2の表示部51a,51bを白色に発光させる発光体である。
【0021】
ケース体8は、例えば白色系の合成樹脂からなり、表示板5を保持する保持部材としての機能、指針用光源6や表示板用光源7を収納するハウジング81,82としての機能、指針用光源6の光を指針4に導いたり、表示板用光源7の光を第1,第2の表示部51a,51bに導くために反射する反射部材としての機能を有している。
【0022】
指針用光源6を収納するハウジング81は、円筒形の壁83によって形成されている。この円筒形の壁83の中程で、円筒形の径の大きさが変わるところがあり、この径が変わるところが傾斜している。この傾斜した部分が表示板用光源7からの光を表示板5側に反射する反射面84を構成している。なお、この壁83の上端側側には、表示板5をケース対8に固定するためと、指針4と表示板5との間から光が漏れないようにするためのリング状の固定兼遮光部材10が固定されている。
【0023】
表示板用光源7を収納するハウジング82は、計器装置Mを正面から見ると扇形をしており、ケース体8のハウジング82は表示板用光源7と対向し、この表示板用光源7が発した照明光を駆動軸2側に反射する第1の反射部85と、表示板用光源7を取り巻くように表示板5とは適宜空間を空けて延長し、第1の反射部85で反射された照明光を表示板5側に反射する第2の反射部86とを備えている。
【0024】
第1の反射部85は、表示板用光源7からの光を駆動軸2側に拡散するように円錐形状をしている。なお、この第1の反射部85の形状は、表示板用光源7からの光を駆動軸2側に拡散するものであれば、どのような形状であっても良い。
【0025】
また、第2の反射部86は、すり鉢形状であり、角度の異なる2つの反射面86a,86bを備えている。この反射面86a,86bは、回路基板1に沿うような傾斜のゆるい反射面86aと、回路基板1に対して45度の角度をなす反射面86bである。
【0026】
この第1,第2の反射部85,86を設けたことによって、表示板用光源7からの光を良好に拡散することができるので、導光体を廃止でき、安価で軽量化を達成できる。
【0027】
見返し部材9は黒色系の合成樹脂からなり、指針4や表示板5が露出する略円形の開口部101を備えている。
【0028】
以上のように、表示板用光源7を設ける位置を、駆動軸2側から第1,第2の表示部51a,51bの可視範囲外部分に移動し、駆動軸2側に表示板用光源7の照明光を照射したことによって、指針4の近傍に設けた第1,第2の表示部51a,51bを照明することができる。
【0029】
また、表示板用光源7を駆動軸2の近傍から移動したことによって、表示板用光源7を回路基板1に配置する際に、計器本体3の端子や回路基板1への機械的固定部分による制約がなくなり、設計が容易となるという効果を得ることもできる。特に、本実施例のように、燃料計や冷却水温計のような表示面積の小さい計器には特に有効である。
【0030】
次に本発明の第2実施例を、図5を用いて説明する。なお、第1実施例と同一及び相当箇所には同一符号を付して、その詳細な説明は省略する。
【0031】
第1実施例の表示板用光源7が上方向に光を発するのに対して、本実施例の表示板用光源11は、駆動軸2側に光を発し第1,第2の表示部51a,51bを照明するものである。この表示板用光源11は、回路基板1の板面に対してほぼ並行に光を発するものである。そして、この表示板用光源11を収納するハウジング83は表示板用光源7と対向し、この表示板用光源7が発した照明光を表示板5側に反射する反射部87とを備えている。この反射部87は、第1実施例の第2の反射部86と同様に、すり鉢形状で、角度の異なる2つの反射面87a,87bを備えている。
【0032】
本実施例においても、第1実施例と同様に、表示板用光源11からの光を良好に拡散することができるので、導光体を廃止でき、安価で軽量化を達成できる。
【0033】
また、表示板用光源11を設ける位置を、駆動軸2側から第1,第2の表示部51a,51bの可視範囲外部分に移動し、駆動軸2側に表示板用光源11の照明光を照射したことによって、指針4の近傍に設けた第2の表示部51bを照明することができる。
【0034】
また、表示板用光源11を駆動軸2の近傍から移動したことによって、表示板用光源11を回路基板1に配置する際に、計器本体3の端子や回路基板1への機械的固定部分による制約がなくなり、設計が容易となるという効果を得ることもできる。特に、本実施例のように、燃料計や冷却水温計のような表示面積の小さい計器には特に有効である。
【0035】
なお、第1実施例では、表示板用光源7を設ける位置を、見返し部材9に対応する部分で、指針4より、やや下側に設けていたが、前記実施例に限定されるものではなく、第1,第2の表示部51a,51bの直下及びその近傍を除いた可視範囲外で、かつ第1,第2の表示部51a,51bに光を放射可能な位置であれば、例えば、図6で示す第3実施例のように、見返し部材9に対応する部分で、指針4のほぼ真横の位置に設けても良い。また、見返し部材9に対応する部分にある必要はなく、例えば、図7で示す第4実施例のように、表示板5の背景部52に対応する部部に設けても良い。
【0036】
【発明の効果】
以上、本発明によれば、所期の目的を達成することができ、導光体を廃止でき、安価で軽量化を達成でき、指針の駆動軸の近傍に設けた表示部を照明することが可能な計器装置を提供することができる。
【図面の簡単な説明】
【図1】本発明の第1実施例の正面図である。
【図2】同実施例の反射体の正面図である。
【図3】図1中のA−A線の断面図である。
【図4】図1中のB−B線の断面図である。
【図5】本発明の第2実施例の断面図である。
【図6】本発明の第3実施例の正面図である。
【図7】本発明の第4実施例の正面図である。
【符号の説明】
1 回路基板
2 駆動軸
3 計器本体
4 指針
5 表示板
7,11 表示板用光源
8 ケース体(反射体)
51a 目盛(第1の表示部)
51b マーク(第2の表示部)
83 壁
84 反射面
85 第1の反射部
86 第2の反射部
87 反射部
M 計器装置
F 燃料計
T 冷却水温計
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an instrument device mounted on a vehicle such as an automobile, and more particularly to an instrument device characterized by its illumination structure.
[0002]
[Prior art]
Conventionally, as this type of instrument device, an instrument body with a drive shaft protruding from a circuit board is mounted, and a pointer that shines by receiving light from the center of rotation is attached to the tip of the drive shaft. In addition, a display board with a transparent display part such as scales, letters and marks is arranged along the turning trajectory of the pointer, and the display part of the display board is placed by a light source placed behind this display board. What is illuminated is known.
[0003]
Specifically, an instrument body that is disposed behind the circuit board and the drive shaft extends forward, a pointer that is attached to the tip side of the drive shaft, and the pointer that is disposed between the pointer and the circuit board. A display plate having a corresponding display unit, a plurality of light sources arranged on concentric circles centered on the drive shaft and illuminating the display unit, and a reflector disposed between the display plate and the circuit board The reflector includes a first reflecting portion that faces the light source and reflects illumination light from the light source to the outer periphery, and a second reflecting portion that reflects toward the display plate so as to surround the light source. The light guide can be abolished when illuminating the display board, and can be achieved at low cost and light weight (for example, see Patent Document 1).
[0004]
[Patent Document 1]
Japanese Patent Laid-Open No. 2001-99685 (FIGS. 4 and 7)
[0005]
[Problems to be solved by the invention]
However, in the case of a conventional instrument device, the display board area is small in the case of an instrument with a small display area, such as a fuel gauge or a cooling water temperature gauge, compared to a meter with a large display area such as a speedometer or engine tachometer. There is no space for arranging the part, and in particular, the mark may be provided near the drive shaft of the pointer as compared with the scale and characters. When the display unit is provided in the vicinity of the drive shaft of the pointer in this way, in the structure as in Patent Document 1, the light from the light source provided on the concentric circle centered on the drive shaft is reflected to the outer periphery. Since the reflecting portion is provided, there is a problem that the display portion provided in the vicinity of the drive shaft of the pointer cannot be illuminated.
[0006]
Therefore, the present invention has been made in view of this point, and its main purpose is to eliminate the light guide, to achieve low cost and light weight, and to illuminate the display unit provided near the drive shaft of the pointer. It is an object of the present invention to provide an instrument device that can be used.
[0007]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention provides a circuit board, an instrument main body with a drive shaft extending forward, a pointer attached to the drive shaft, and disposed between the pointer and the circuit board from the drive shaft. A display panel having a first display section located in a distant portion and a second display section located in the vicinity of the drive shaft, a turning member covering the periphery of the display board, and a front side of the circuit board are disposed. And a light source that illuminates the first and second display units, and a reflector disposed between the display board and the circuit board, the instrument body is provided behind the circuit board, A light source is disposed at a portion corresponding to the turn-back member and is capable of emitting light to the first and second display portions, and the reflector is opposed to the light source and illumination light from the light source is directed to the drive shaft side. A first reflecting portion that reflects and the light source so as to surround the light source; The 示板 is provided with a second reflecting part for reflecting the illumination light extending at a suitable space on the display panel side.
[0008]
Further, the present invention provides a circuit board, an instrument main body with a driving shaft extending forward, a pointer attached to the driving shaft, and a portion disposed between the pointer and the circuit board and spaced from the driving shaft. A display panel having a first display section positioned and a second display section positioned in the vicinity of the drive shaft; a turning member covering the periphery of the display board; and a front side of the circuit board and the first display section. 1, a light source that illuminates the second display unit, and a reflector disposed between the display board and the circuit board, the instrument body is provided behind the circuit board, and the light source is turned back A portion corresponding to a member and capable of emitting light to the first and second display portions and emitting light in the direction of the plate surface of the circuit board, and surrounding the light source around the reflector The display board is extended from the light source as appropriate. Is the illumination light that a reflective portion for reflecting the display panel side.
[0009]
In addition, the present invention includes a pointer light source that is provided around the drive shaft of the circuit board and illuminates the pointer, and a wall that forms a housing that houses the pointer light source. Is provided with a reflection surface that reflects the illumination light toward the display plate.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The instrument device of the present invention includes a circuit board 1, an instrument body 3 with a drive shaft 2 extending forward, a pointer 4 attached to the drive shaft 2, and a drive shaft disposed between the pointer 4 and the circuit board 1. 2, a display board 5 having a first display part 51 a located in a part away from 2 and a second display part 51 b located in the vicinity of the drive shaft 2, a turn-back member 9 covering the periphery of the display board 5, and a circuit board 1 and a reflector disposed between the display board 5 and the circuit board 1 and a display board light source 7 that is a light source for illuminating the first and second display portions 51a and 51b. A case body 8, the instrument body 3 is provided behind the circuit board 1, and the light source 7 for the display panel is turned to the portion corresponding to the turning member 9 and radiates light to the first and second display portions 51 a and 51 b. Arranged in such a manner that the case body 8 faces the light source 7 for the display plate and is illuminated from the light source 7 for the display plate The first reflecting portion 85 that reflects the light to the drive shaft 2 side and the display plate 5 so as to surround the light source 7 for the display plate are extended with an appropriate space to reflect the illumination light to the display plate 5 side. The reflection part 86 is provided. By comprising in this way, the light guide can be abolished, it can achieve low cost and weight reduction, and the measuring device which can illuminate the display part provided in the vicinity of the drive shaft of a pointer is provided.
[0011]
Further, the circuit board 1, the instrument body 3 in which the drive shaft 2 extends forward, the pointer 4 attached to the drive shaft 2, and the portion disposed between the pointer 4 and the circuit board 1 and away from the drive shaft 2 A display plate 5 having a first display portion 51a located in the vicinity of the drive shaft 2 and a second display portion 51b located in the vicinity of the drive shaft 2, a turning member 9 covering the periphery of the display plate 5, and a front side of the circuit board 1. And a reflector disposed between the display board 5 and the circuit board 1, and a light source 11 for the display board that emits light toward the drive shaft 4 and illuminates the first and second display portions 51a and 51b. A case body 8, the instrument body 3 is provided behind the circuit board 1, and the light source 11 for the display panel is turned to the portion corresponding to the turning member 9 and radiates light to the first and second display portions 51 a and 51 b. The case body 8 is provided so as to emit light in the direction of the plate surface of the circuit board 1. The display panel 5 so as to surround the display panel light source 11 is provided with a reflective portion 87 for reflecting the display panel 5 side illumination light from the display panel light source 11 extends at a suitable space. By comprising in this way, the light guide can be abolished, it can achieve low cost and weight reduction, and the measuring device which can illuminate the display part provided in the vicinity of the drive shaft of a pointer is provided.
[0012]
In addition, a light source 6 for a pointer that is provided around the drive shaft 2 of the circuit board 1 and illuminates the pointer 4 and a wall 83 that forms a housing 81 that houses the light source 6 for the pointer are provided. 11 is provided with a reflection surface 84 for reflecting the illumination light from the display plate 5 to the display plate 5 side. By comprising in this way, the light guide can be abolished, it can achieve low cost and weight reduction, and the measuring device which can illuminate the display part provided in the vicinity of the drive shaft of a pointer is provided.
[0013]
【Example】
1 to 4 show a first embodiment of the present invention. Hereinafter, the case where the present invention is applied to, for example, an automobile instrument device will be described.
[0014]
As shown in FIG. 1, the meter device M according to the present embodiment includes a fuel gauge F, a coolant temperature gauge T, and a gear indicator G that displays the gear position of the automatic transmission. The fuel gauge F and the cooling water temperature gauge T include a circuit board 1, a meter body 3 that is conductively attached to the circuit board 1 and the drive shaft 2 extends forward, a pointer 4 that is rotationally driven by the drive shaft 2, and this pointer 4 between the display board 5 and the circuit board 1, a pointer light source 6 that illuminates the pointer 4, a display board light source 7 that illuminates the display board 5, and the circuit board 1 and the display board 5. The case body 8 which is a reflector disposed on the surface 4 and the turning member 9 for exposing the pointer 4 and the display board 5 are configured.
[0015]
The circuit board 1 is composed of a hard circuit board in which a wiring pattern (not shown) is provided on a glass epoxy base material, for example, and drives and controls the pointer light source 6, the display board light source 7, and the instrument body 3, for example. Driving means (not shown) to perform and various circuit components (not shown) such as resistors and capacitors are conductively connected to the wiring pattern.
[0016]
The meter body 3 is composed of a movable magnet type meter or a stepping motor. The main part of the meter body 3 is mounted behind the circuit board 1 so that the drive shaft 2 penetrates the circuit board 1 and is appropriately connected by means such as soldering. It is electrically connected to the wiring pattern (the driving means).
[0017]
The pointer 4 is made of a translucent synthetic resin, and includes an instruction portion 41 that extends linearly and a cap 42 made of a light-shielding synthetic resin that covers the outer periphery of the rotation center of the indication portion 41. The front end side indicates a scale constituting a display unit to be described later of the display plate 5. In addition, a light receiving unit 43 that receives light emitted from the pointer light source 6 disposed behind the pointing unit 41 and the received light is reflected and guided to the distal end side of the pointing unit 41 at the rotation center of the pointing unit 41. A reflection portion 44 is formed.
[0018]
The display plate 5 has an arcuate array shape along the rotation trajectory of the pointer 4 and includes a scale 51a, a number (not shown), and a mark 51b to be indicated by the instruction portion 41 of the pointer 4. And a background portion 52 that forms the background of the display portion 51. In the display unit 51, the scale 51a and the like is a first display unit located at a part away from the drive shaft 2, and is provided along a trajectory in which the distal end side of the instruction unit 41 is rotated. This is a second display unit located in the vicinity of the drive shaft 2 and is provided near the cap 42. The first and second display portions 51a and 51b and the background portion 52 are formed of a printing layer formed on the front surface of a thin plate-like base material 53 made of a translucent synthetic resin, and the first and second display portions 51a. , 51b are formed of a white light-transmitting ink, and are transmitted and illuminated by the light source 7 for the display panel. The background portion 52 is formed of black light-shielding ink. The print layers of the first and second display portions 51a and 51b and the background portion 52 are formed by printing using means such as screen printing.
[0019]
The pointer light source 6 is formed of a chip-type light emitting diode that emits red light, for example, and is disposed in the vicinity of the center of rotation of the pointer 4 and is a light emitter that causes the indicator portion 41 of the pointer 4 to emit red light through the light receiving portion 43.
[0020]
The display panel light source 7 is formed of, for example, a chip-type light emitting diode that emits white light. The display panel light source 7 is outside the visible range except directly below and in the vicinity of the first and second display portions 51a and 51b, and the first and second light sources. It arrange | positions so that light can be radiated | emitted to display part 51a, 51b, and is arrange | positioned in the part corresponding to the turning member 9 in a present Example. Here, as shown in FIG. 1, when the instrument device M is viewed from the front, the display panel light source 7 and the first and second display portions 51a and 51b can emit light. This means that the second display sections 51a and 51b can be connected by a straight line. The display panel light source 7 is a light emitter that emits white light from the first and second display portions 51a and 51b.
[0021]
The case body 8 is made of, for example, a white synthetic resin and functions as a holding member for holding the display plate 5, functions as housings 81 and 82 for storing the pointer light source 6 and the display plate light source 7, and the pointer light source 6 has a function as a reflecting member that reflects light for guiding the light to the pointer 4 and for guiding light of the light source 7 for the display panel to the first and second display portions 51a and 51b.
[0022]
A housing 81 that houses the pointer light source 6 is formed by a cylindrical wall 83. In the middle of the cylindrical wall 83, there is a place where the diameter of the cylinder changes, and the place where the diameter changes is inclined. This inclined portion constitutes a reflection surface 84 that reflects the light from the light source 7 for the display panel to the display panel 5 side. In addition, on the upper end side of the wall 83, a ring-shaped fixing and light shielding for fixing the display plate 5 to the case pair 8 and for preventing light from leaking between the pointer 4 and the display plate 5. The member 10 is fixed.
[0023]
The housing 82 for housing the display board light source 7 has a fan shape when the instrument device M is viewed from the front, and the housing 82 of the case body 8 faces the display board light source 7, and the display board light source 7 emits light. The first reflecting portion 85 that reflects the illuminated light to the drive shaft 2 side and the display plate 5 so as to surround the light source 7 for the display plate extend with an appropriate space, and are reflected by the first reflecting portion 85. And a second reflecting portion 86 that reflects the illumination light toward the display plate 5 side.
[0024]
The first reflecting portion 85 has a conical shape so as to diffuse the light from the light source 7 for the display panel to the drive shaft 2 side. The shape of the first reflecting portion 85 may be any shape as long as it diffuses the light from the display panel light source 7 toward the drive shaft 2.
[0025]
Moreover, the 2nd reflection part 86 is mortar shape, and is provided with the two reflective surfaces 86a and 86b from which angles differ. The reflecting surfaces 86 a and 86 b are a reflecting surface 86 a that is gently inclined along the circuit board 1 and a reflecting surface 86 b that forms an angle of 45 degrees with respect to the circuit board 1.
[0026]
By providing the first and second reflecting portions 85 and 86, the light from the light source 7 for the display panel can be diffused favorably, so that the light guide can be eliminated and the weight can be reduced at a low cost. .
[0027]
The facing member 9 is made of a black synthetic resin and includes a substantially circular opening 101 through which the pointer 4 and the display board 5 are exposed.
[0028]
As described above, the position where the display plate light source 7 is provided is moved from the drive shaft 2 side to the outside of the visible range of the first and second display portions 51a and 51b, and the display plate light source 7 is provided on the drive shaft 2 side. The first and second display portions 51a and 51b provided in the vicinity of the pointer 4 can be illuminated by irradiating with the illumination light.
[0029]
In addition, when the display panel light source 7 is moved from the vicinity of the drive shaft 2 when the display panel light source 7 is disposed on the circuit board 1, the display panel light source 7 is mechanically fixed to the terminal of the instrument body 3 or the circuit board 1. It is possible to obtain an effect that the restriction is eliminated and the design becomes easy. In particular, this embodiment is particularly effective for an instrument having a small display area such as a fuel gauge or a cooling water temperature gauge.
[0030]
Next, a second embodiment of the present invention will be described with reference to FIG. In addition, the same code | symbol is attached | subjected to the same and equivalent part as 1st Example, and the detailed description is abbreviate | omitted.
[0031]
Whereas the display panel light source 7 of the first embodiment emits light upward, the display panel light source 11 of the present embodiment emits light toward the drive shaft 2 and the first and second display portions 51a. , 51b. The display board light source 11 emits light substantially parallel to the plate surface of the circuit board 1. The housing 83 for housing the display plate light source 11 is provided with a reflection portion 87 that faces the display plate light source 7 and reflects the illumination light emitted from the display plate light source 7 toward the display plate 5. . Similar to the second reflecting portion 86 of the first embodiment, the reflecting portion 87 has a mortar shape and includes two reflecting surfaces 87a and 87b having different angles.
[0032]
Also in the present embodiment, as in the first embodiment, the light from the light source 11 for the display panel can be diffused well, so that the light guide can be eliminated, and the weight can be reduced at a low cost.
[0033]
Further, the position where the display plate light source 11 is provided is moved from the drive shaft 2 side to the portion outside the visible range of the first and second display portions 51a and 51b, and the illumination light of the display plate light source 11 is provided on the drive shaft 2 side. The second display portion 51b provided in the vicinity of the pointer 4 can be illuminated.
[0034]
Further, when the display panel light source 11 is moved from the vicinity of the drive shaft 2, when the display panel light source 11 is arranged on the circuit board 1, the display panel light source 11 is mechanically fixed to the terminal of the instrument body 3 or the circuit board 1. It is possible to obtain an effect that the restriction is eliminated and the design becomes easy. In particular, this embodiment is particularly effective for an instrument having a small display area such as a fuel gauge or a cooling water temperature gauge.
[0035]
In the first embodiment, the position where the light source 7 for the display panel is provided is a portion corresponding to the turn-back member 9 and slightly below the pointer 4, but is not limited to the above embodiment. If the position is outside the visible range except directly below and in the vicinity of the first and second display units 51a and 51b and can emit light to the first and second display units 51a and 51b, for example, As in the third embodiment shown in FIG. 6, the portion corresponding to the turn-back member 9 may be provided at a position substantially beside the pointer 4. Moreover, it does not need to be in the part corresponding to the turning member 9, and may be provided in a part corresponding to the background part 52 of the display board 5 as in the fourth embodiment shown in FIG.
[0036]
【The invention's effect】
As described above, according to the present invention, the intended purpose can be achieved, the light guide can be eliminated, the light weight can be reduced, and the display unit provided in the vicinity of the drive shaft of the pointer can be illuminated. Possible instrumentation can be provided.
[Brief description of the drawings]
FIG. 1 is a front view of a first embodiment of the present invention.
FIG. 2 is a front view of the reflector of the same example.
FIG. 3 is a cross-sectional view taken along line AA in FIG.
4 is a cross-sectional view taken along line BB in FIG.
FIG. 5 is a cross-sectional view of a second embodiment of the present invention.
FIG. 6 is a front view of a third embodiment of the present invention.
FIG. 7 is a front view of a fourth embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Circuit board 2 Drive shaft 3 Instrument main body 4 Pointer 5 Display board 7,11 Light source for display boards 8 Case body (reflector)
51a scale (first display)
51b mark (second display)
83 Wall 84 Reflecting surface 85 First reflecting portion 86 Second reflecting portion 87 Reflecting portion M Instrument device F Fuel gauge T Cooling water thermometer

Claims (3)

回路基板と、駆動軸が前方に延びる計器本体と、前記駆動軸に装着される指針と、この指針と前記回路基板との間に配置され前記駆動軸から離れた部分に位置する第1の表示部と前記駆動軸の近傍に位置する第2の表示部とを有する表示板と、この表示板周囲を覆う見返し部材と、前記回路基板の前方側に配置されるとともに前記第1,第2の表示部を照明する光源と、前記表示板と前記回路基板との間に配置される反射体とを備え、前記計器本体を前記回路基板の背後に設け、前記光源を前記見返し部材に対応する部分でかつ前記第1,第2の表示部に光を放射可能に配置し、前記反射体に前記光源と対向し前記光源からの照明光を前記駆動軸側に反射する第1の反射部と、前記光源を取り巻くように前記表示板とは適宜空間を空けて延長し前記照明光を前記表示板側に反射する第2の反射部とを設けたことを特徴とする計器装置。A circuit board, an instrument main body with a drive shaft extending forward, a pointer attached to the drive shaft, and a first display located between the pointer and the circuit board and positioned away from the drive shaft And a second display unit located in the vicinity of the drive shaft, a turn-back member that covers the periphery of the display plate, and the first and second components disposed on the front side of the circuit board A portion that includes a light source that illuminates a display unit, and a reflector that is disposed between the display plate and the circuit board, wherein the instrument body is provided behind the circuit board, and the light source corresponds to the turning member. And the first and second display units are arranged so as to be able to emit light, the first reflecting unit facing the light source to the reflector and reflecting the illumination light from the light source to the drive shaft side, The display board is extended with an appropriate space so as to surround the light source. Meter apparatus characterized in that a second reflecting part for reflecting the illumination light to the display panel side. 回路基板と、駆動軸が前方に延びる計器本体と、前記駆動軸に装着される指針と、この指針と前記回路基板との間に配置され前記駆動軸から離れた部分に位置する第1の表示部と前記駆動軸の近傍に位置する第2の表示部とを有する表示板と、この表示板周囲を覆う見返し部材と、前記回路基板の前方側に配置されるとともに前記第1,第2の表示部を照明する光源と、前記表示板と前記回路基板との間に配置される反射体とを備え、前記計器本体を前記回路基板の背後に設け、前記光源を前記見返し部材に対応する部分でかつ前記第1,第2の表示部に光を放射可能であるとともに前記回路基板の板面方向に光を発するように設け、前記反射体に前記光源を取り巻くように前記表示板とは適宜空間を空けて延長し前記光源からの照明光を前記表示板側に反射する反射部を設けたことを特徴とする計器装置。A circuit board, an instrument main body with a drive shaft extending forward, a pointer attached to the drive shaft, and a first display located between the pointer and the circuit board and positioned away from the drive shaft And a second display unit located in the vicinity of the drive shaft, a turn-back member that covers the periphery of the display plate, and the first and second components disposed on the front side of the circuit board A portion that includes a light source that illuminates a display unit, and a reflector that is disposed between the display plate and the circuit board, wherein the instrument body is provided behind the circuit board, and the light source corresponds to the turning member. In addition, the first and second display units can emit light and emit light in the direction of the plate surface of the circuit board, and the display plate is suitably used to surround the light source around the reflector. Extend the space and leave the illumination light from the light source in front. Meter device being characterized in that a reflective portion for reflecting the display panel side. 前記回路基板の前記駆動軸の周囲に設けられ前記指針を照明する指針用光源と、この指針用光源を収納するハウジングを形成する壁とを備え、前記壁に前記光源からの照明光を前記表示板側に反射する反射面を設けたことを特徴とする請求項1または2記載の計器装置。A pointer light source provided around the drive shaft of the circuit board for illuminating the pointer, and a wall forming a housing for housing the pointer light source, and the illumination light from the light source is displayed on the wall 3. The instrument device according to claim 1, further comprising a reflecting surface that reflects on the plate side.
JP2003094848A 2003-03-31 2003-03-31 Instrument device Expired - Fee Related JP3747466B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9205775B2 (en) 2013-10-01 2015-12-08 Denso International America, Inc. Prism for light reflecting/diffusion between LED's

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CN109140312A (en) * 2018-09-21 2019-01-04 东风汽车电子有限公司 Automobile instrument panel back lighting lamp box structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9205775B2 (en) 2013-10-01 2015-12-08 Denso International America, Inc. Prism for light reflecting/diffusion between LED's

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