JP6863586B2

JP6863586B2 - Light guide structure for electronic components

Info

Publication number: JP6863586B2
Application number: JP2017149197A
Authority: JP
Inventors: 吉晴塚原; 桑原　敏; 敏桑原; 直紀林
Original assignee: 帝国通信工業株式会社
Priority date: 2016-08-05
Filing date: 2017-08-01
Publication date: 2021-04-21
Anticipated expiration: 2037-08-01
Also published as: JP2018026346A; JP7018680B2; JP2021097054A

Description

本発明は、操作つまみを有する電子部品の導光構造に関するものである。 The present invention relates to a light guide structure of an electronic component having an operation knob.

従来、回転式電子部品の中には、例えば特許文献１に示すように、回転式電子部品（１）の回転つまみ（１８０）の外周部分の一部を外装用ケース（３００）に設けた回転つまみ露出部（３０３）から外部に露出し、回転つまみ（１８０）の前記回転つまみ露出部（３０３）から露出した部分を指等で回転操作することで、内部の電気的機能部（摺接パターン６５，摺動子１１０）を駆動し、その検出出力を変化させる構造のものがあった。 Conventionally, among the rotary electronic components, for example, as shown in Patent Document 1, a part of the outer peripheral portion of the rotary knob (180) of the rotary electronic component (1) is provided on the exterior case (300). By rotating the portion of the rotary knob (180) exposed from the rotary knob exposed portion (303) to the outside from the knob exposed portion (303) with a finger or the like, the internal electrical functional portion (sliding contact pattern) is operated. 65, there was a structure that drives the slider 110) and changes its detection output.

一方、回路基板（６０）上に設置した発光素子（７０）から発射された光は、導光板（４０）の内部に導入されて光乱反射部（４３）に導かれ、光乱反射部（４３）の前面から放射されて回転つまみ（１８０）のつまみ操作部（１８３）の背面側からこのつまみ操作部（１８３）を照らし出し、塗装されているつまみ操作部（１８３）表面の抜き文字等の部分を明るく表示する。 On the other hand, the light emitted from the light emitting element (70) installed on the circuit board (60) is introduced into the light guide plate (40) and guided to the light diffuse reflection unit (43), and is guided to the light diffuse reflection unit (43). The knob operation unit (183) is illuminated from the back side of the knob operation unit (183) of the rotary knob (180) radiated from the front surface of the knob, and the painted characters on the surface of the knob operation unit (183) are exposed. Is displayed brightly.

特開２０１０−９９３７号公報Japanese Unexamined Patent Publication No. 2010-9937

しかしながら、回転つまみを有する電子部品の中には、その構造上、回転つまみのつまみ操作部の背面側に導光板を設置することが困難な場合があった。例えば、特許文献１に示す回転式電子部品（１）の場合、回転つまみ（１８０）のつまみ操作部（１８３）の背面側に導光板（４０）の光乱反射部（４３）を設置しているが、このため、回転つまみ（１８０）のつまみ操作部（１８３）と外装用ケース（３００）の回転つまみ露出部（３０３）の間の隙間から液体が浸入した場合、浸入した液体は、直接導光板（４０）を伝って、発光素子（７０）を設置した回路基板（６０）表面に付着してしまう虞がある。これを防止するために、防滴構造を設置しようとすると、回転つまみ（１８０）のつまみ操作部（１８３）の背面側付近の構造が複雑化し、つまみ操作部（１８３）の背面側付近のスペースに導光板（４０）の光乱反射部（４３）を設置することが困難になる。
本発明は上述の点に鑑みてなされたものでありその目的は、発光素子から発射される光を導入する導光体によって直接操作つまみの操作部を照明しなくても、操作つまみの操作部を容易かつ確実に照光することができる電子部品の導光構造を提供することにある。 However, in some electronic components having a rotary knob, it may be difficult to install a light guide plate on the back side of the knob operation portion of the rotary knob due to its structure. For example, in the case of the rotary electronic component (1) shown in Patent Document 1, the light diffuse reflection portion (43) of the light guide plate (40) is installed on the back side of the knob operation portion (183) of the rotary knob (180). However, for this reason, when liquid infiltrates through the gap between the knob operating portion (183) of the rotary knob (180) and the rotary knob exposed portion (303) of the exterior case (300), the infiltrated liquid is directly guided. There is a risk that it will travel along the light plate (40) and adhere to the surface of the circuit board (60) on which the light emitting element (70) is installed. In order to prevent this, if a drip-proof structure is to be installed, the structure near the back side of the knob operation unit (183) of the rotary knob (180) becomes complicated, and the space near the back side of the knob operation unit (183) becomes complicated. It becomes difficult to install the light diffused reflection portion (43) of the light guide plate (40).
The present invention has been made in view of the above points, and an object of the present invention is to use a light guide body that introduces light emitted from a light emitting element without directly illuminating the operation unit of the operation knob. It is an object of the present invention to provide a light guide structure for electronic components that can be easily and surely illuminated.

本発明は、回路基板の一方の面側に、円板形状であってその外周面が操作部となっており且つその一方の面から突出する軸部を中心に円運動または円弧運動または揺動運動する操作つまみを設置し、前記操作つまみと回路基板の間に操作つまみの前記運動に応じて出力を変化する検出手段を設け、前記操作つまみと回路基板と検出手段とをケース内に収納し、ケースに設けた開口から前記操作つまみの外周の操作部の一部を露出し、前記回路基板上に設置した発光素子から発射された光を、前記回路基板の発光素子を設置した面側に配置した導光体の内部に導入してこの導光体の所望の位置に設けた光出射面から出射させる電子部品の導光構造であって、前記操作つまみは、透明な樹脂からなるつまみ用導光部を有し、当該つまみ用導光部は、前記操作部を外周面とする導光本体部と、当該導光本体部から前記軸部側に突出して当該軸部の中心部分を構成する導光軸部とを具備することで構成され、前記発光素子と前記操作つまみは、前記回路基板を挟んだ反対面側にそれぞれ設置され、さらに前記回路基板には、前記導光体の光出射面を形成した光導出部または前記つまみ用導光部の光入射面を形成した導光軸部を挿入して光を通す挿通部が設けられており、前記導光体の光出射面から出射した光を、前記つまみ用導光部の導光軸部の光入射面から入射して当該つまみ用導光部の導光本体部の操作部に導くことを特徴としている。
本発明によれば、発光素子から導光体に導入された光を、操作つまみに設けたつまみ用導光部を通して、操作つまみの操作部に導くので、操作つまみの操作部を容易かつ確実に明るく照明することができる。また例えば防滴等の関係で、構造上、導光体によって直接操作つまみの操作部を照明できない場合であっても、前記操作部を照明することが可能になる。 In the present invention, there is a disk shape on one surface side of the circuit board, the outer peripheral surface thereof is an operation portion, and a circular motion, an arc motion, or a swing around a shaft portion protruding from the one surface. An exercising operation knob is installed, a detection means for changing the output of the operation knob according to the movement of the operation knob is provided between the operation knob and the circuit board, and the operation knob, the circuit board, and the detection means are housed in a case. , A part of the operation part on the outer periphery of the operation knob is exposed from the opening provided in the case, and the light emitted from the light emitting element installed on the circuit board is directed to the surface side of the circuit board where the light emitting element is installed. It is a light guide structure of an electronic component that is introduced into the arranged light guide body and emitted from a light emitting surface provided at a desired position of the light guide body, and the operation knob is for a knob made of a transparent resin. The light guide portion for a knob has a light guide portion, and constitutes a light guide main body portion having the operation portion as an outer peripheral surface and a central portion of the shaft portion protruding from the light guide main body portion toward the shaft portion. The light emitting element and the operation knob are respectively installed on opposite surface sides of the circuit board, and the light of the light guide is mounted on the circuit board. An insertion portion is provided in which a light guiding portion forming an exit surface or a light guide shaft portion forming a light incident surface of the knob light guide portion is inserted to allow light to pass through, and the light emitting surface of the light guide body is provided. It is characterized in that the emitted light is incident from the light incident surface of the light guide shaft portion of the knob light guide portion and is guided to the operation portion of the light guide main body portion of the knob light guide portion.
According to the present invention, the light introduced from the light emitting element into the light guide body is guided to the operation unit of the operation knob through the light guide unit for the knob provided on the operation knob, so that the operation unit of the operation knob can be easily and surely operated. It can be illuminated brightly. Further, for example, even when the operation portion of the operation knob cannot be directly illuminated by the light guide due to the structure such as drip-proof, the operation portion can be illuminated.

また本発明によれば、回路基板の一方の面側に検出手段等の回路を、もう一方の面側に発光素子等の回路を配置できる。つまり、回路基板の両面を有効に利用できる。また回路基板の発光素子を設置した面側に導光体を、検出手段を設置した面側に操作つまみを設置するので、導光体と操作つまみの両者が相互に干渉せず、両者の設計の自由度を高くすることができる。 Further, according to the present invention, a circuit such as a detection means can be arranged on one surface side of the circuit board, and a circuit such as a light emitting element can be arranged on the other surface side. That is, both sides of the circuit board can be effectively used. Further, since the light guide body is installed on the surface side where the light emitting element of the circuit board is installed and the operation knob is installed on the surface side where the detection means is installed, both the light guide body and the operation knob do not interfere with each other, and both designs are provided. The degree of freedom can be increased.

また本発明によれば、回路基板の一方の側にある導光体内の光を、もう一方の側にある操作つまみのつまみ用導光部に、容易且つ確実に導入することができる。 Further, according to the present invention, the light inside the light guide on one side of the circuit board can be easily and surely introduced into the light guide portion for the knob of the operation knob on the other side.

また本発明は、前記導光体の光出射面と、前記つまみ用導光部の光入射面との間に、接触防止用の隙間を形成したことを特徴としている。
これによって、導光体の光出射面と、円運動等するつまみ用導光部の光入射面とが接触して摺動・摩耗して生じる摩耗粉（カス）等によって光が乱反射し、つまみ用導光部内に確実に光を導入できなくなることを防止することができる。 Further, the present invention is characterized in that a gap for preventing contact is formed between the light emitting surface of the light guide body and the light incident surface of the knob light guide portion.
As a result, the light emitting surface of the light guide body and the light incident surface of the knob light guide portion that makes a circular motion come into contact with each other, and the light is diffusely reflected by the wear debris generated by sliding and wearing, and the knob. It is possible to prevent the light from being unable to be reliably introduced into the light guide unit.

また本発明は、前記導光体に、前記つまみ用導光部の光入射面に向けて光を出射する光出射面の他に、前記ケースに設けた照光部の裏面に向けて光を出射する光出射面を設けたことを特徴としている。
これによって、１つの導光体に、操作つまみの操作部とケースの照光部の２箇所を照光する機能を持たせることができる。 Further, in the present invention, in addition to the light emitting surface that emits light to the light guide body toward the light incident surface of the knob light guide portion, the present invention emits light toward the back surface of the illumination portion provided in the case. It is characterized by providing a light emitting surface.
As a result, one light guide body can be provided with a function of illuminating two places, an operation portion of the operation knob and an illumination portion of the case.

本発明によれば、発光素子から発射される光を導入する導光体によって直接操作つまみの操作部を照明しなくても、操作つまみの操作部を容易かつ確実に照光することが可能になる。 According to the present invention, it is possible to easily and surely illuminate the operation unit of the operation knob without directly illuminating the operation unit of the operation knob by the light guide body that introduces the light emitted from the light emitting element. ..

電子部品１の斜視図である。It is a perspective view of the electronic component 1. 電子部品１の概略断面図（図１のＡ−Ａ概略断面図）である。It is a schematic sectional view (AA schematic sectional view of FIG. 1) of an electronic component 1. FIG. 本体ユニット１０と第４ケース３００と防滴部材２５０の分解斜視図である。It is an exploded perspective view of the main body unit 10, the fourth case 300, and the drip-proof member 250. 本体ユニット１０の分解斜視図である。It is an exploded perspective view of the main body unit 10. 本体ユニット１０を別の角度から見た分解斜視図である。It is an exploded perspective view which looked at the main body unit 10 from another angle. 第４ケース３００を後側の下側から見た斜視図である。It is a perspective view which looked at the 4th case 300 from the lower side of the rear side.

以下、本発明の実施形態を図面を参照して詳細に説明する。図１は本発明の１実施形態を用いて構成された電子部品（以下「回転式電子部品」という）１の斜視図、図２は回転式電子部品１の概略断面図（図１のＡ−Ａ概略断面図）、図３は回転式電子部品１を構成する本体ユニット１０と第４ケース３００と防滴部材（以下「パッキン」という）２５０とを分解して示す斜視図、図４は本体ユニット１０の分解斜視図、図５は本体ユニット１０を別の角度から見た分解斜視図である。これらの図に示すように回転式電子部品１は、各種部品を収納した本体ユニット１０と、本体ユニット１０の操作つまみ１００を突出する側の面を覆う第４ケース３００とを具備して構成されている。なお以下の説明において、「上」とは本体ユニット１０から第４ケース３００を見る方向をいい、「下」とはその反対方向をいうものとする。また「前」とは下記する第１ケース２０から操作つまみ１００側を見る方向をいい、「後」とは第１ケース２０から下記する回路基板１６０側を見る方向をいうものとする。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view of an electronic component (hereinafter referred to as “rotary electronic component”) 1 configured by using one embodiment of the present invention, and FIG. 2 is a schematic cross-sectional view of the rotary electronic component 1 (A- of FIG. 1). A schematic cross-sectional view), FIG. 3 is a perspective view showing the main body unit 10 constituting the rotary electronic component 1, the fourth case 300, and the drip-proof member (hereinafter referred to as “packing”) 250 in an exploded manner, and FIG. 4 is a perspective view showing the main body. An exploded perspective view of the unit 10, FIG. 5 is an exploded perspective view of the main body unit 10 viewed from another angle. As shown in these figures, the rotary electronic component 1 includes a main body unit 10 that houses various parts, and a fourth case 300 that covers a surface on the protruding side of the operation knob 100 of the main body unit 10. ing. In the following description, "upper" means the direction in which the fourth case 300 is viewed from the main body unit 10, and "lower" means the opposite direction. Further, "front" refers to the direction in which the operation knob 100 side is viewed from the first case 20 described below, and "rear" refers to the direction in which the circuit board 160 side described below is viewed from the first case 20.

図２〜図５に示すように本体ユニット１０は、第１ケース２０と第２ケース７０の間に、摺動子１３０を取り付けた操作つまみ１００を収納し、また第１ケース２０の反対面側に、端子ユニット１４０を収納し、その上から回路基板１６０と、導光体１９０と、第３ケース２２０とを設置して構成されている。また回転式電子部品１は、この本体ユニット１０にパッキン２５０と第４ケース３００とを装着して構成されている。 As shown in FIGS. 2 to 5, the main body unit 10 accommodates the operation knob 100 to which the slider 130 is attached between the first case 20 and the second case 70, and is on the opposite side side of the first case 20. The terminal unit 140 is housed in the terminal unit 140, and the circuit board 160, the light guide body 190, and the third case 220 are installed on the terminal unit 140. Further, the rotary electronic component 1 is configured by mounting the packing 250 and the fourth case 300 on the main body unit 10.

第１ケース２０は非透明材料からなる合成樹脂を略矩形箱型に成形した成形品であり、その上部中央に略円筒状の軸受部２１を設け、この軸受部２１の操作つまみ１００を向く側に凹部からなる第１収納部２３を、回路基板１６０を向く側に凹部からなる第２収納部２５を設けて構成されている。第１ケース２０の左右両側面の第１収納部２３側の部分には、下記する第２ケース７０の爪部７９を係止する矩形状の貫通孔からなる一対の被係止部２７が設けられている。また第１ケース２０の左右両側面の第２収納部２５側の部分には、下記する第３ケース２２０の爪部２２３を係止する矩形状の貫通孔からなる一対の被係止部２９が形成されている。また第１ケース２０の左右両側面の前記両被係止部２７，２９の間の位置には、下記する第４ケース３００の被係止部３０９を係止する爪状の一対の係止部３０が形成されている。軸受部２１の下方には、後方に向かって開口する略矩形状の端子ユニット収納部３１が形成されている。また前記軸受部２１の上面の中央部分の円弧面部分と、その左右両側の第１収納部２３側に突出する上辺部分はパッキン搭載面３３（３３ａ〜３３ｃ）となっている。また下記する操作つまみ１００のストッパ部１２９を当接してそれより上方向への移動を阻止する左右一対のストッパ係止部３５（図４では一方のみ示す）が形成されている。また図示はしていないが、第１収納部２３内の軸受部２１を設けた面の下方（下記するクリック用ボール１２７に対向する位置）には、円弧状方向（クリック用ボール１２７の移動する円弧方向）に向かって凹凸するクリック係合部が形成されている。 The first case 20 is a molded product obtained by molding a synthetic resin made of a non-transparent material into a substantially rectangular box shape, and a substantially cylindrical bearing portion 21 is provided in the center of the upper portion thereof, and the side of the bearing portion 21 facing the operation knob 100. The first accommodating portion 23 formed of a recess is provided on the side facing the circuit board 160, and the second accommodating portion 25 formed of a recess is provided on the side facing the circuit board 160. A pair of locked portions 27 composed of rectangular through holes for locking the claw portions 79 of the second case 70 described below are provided on the left and right side surfaces of the first case 20 on the side of the first storage portion 23. Has been done. Further, in the portion on the left and right side surfaces of the first case 20 on the second storage portion 25 side, a pair of locked portions 29 formed of rectangular through holes for locking the claw portion 223 of the third case 220 described below are provided. It is formed. Further, at a position between the both locked portions 27 and 29 on the left and right side surfaces of the first case 20, a pair of claw-shaped locking portions for locking the locked portions 309 of the fourth case 300 described below. 30 is formed. Below the bearing portion 21, a substantially rectangular terminal unit accommodating portion 31 that opens rearward is formed. Further, the arc surface portion of the central portion of the upper surface of the bearing portion 21 and the upper side portion protruding toward the first storage portion 23 on both the left and right sides thereof are packing mounting surfaces 33 (33a to 33c). Further, a pair of left and right stopper locking portions 35 (only one is shown in FIG. 4) are formed so as to abut the stopper portions 129 of the operation knob 100 described below to prevent the movement of the stopper portions 129 upward. Although not shown, the click ball 127 moves in the arcuate direction below the surface of the first storage portion 23 where the bearing portion 21 is provided (the position facing the click ball 127 described below). A click engaging portion that is uneven toward the arc direction) is formed.

第２ケース７０は、非透明材料からなる合成樹脂を一体成形して構成されており、略平板矩形状のケース本体部７１と、ケース本体部７１の上部中央から操作つまみ１００側に向けて突出する円板状のつまみ支持部７３とを具備して構成されている。つまみ支持部７３の操作つまみ１００側の面の外周部分は円筒状に突出しており、またその内側中央には、有底円筒状の突出部７５が突出して設けられている。ケース本体部７１の左右両側辺からは、操作つまみ１００側に向けて一対の係止爪７７が突出している。係止爪７７は平板状であり、その先端近傍の両外側位置に爪部７９を設けている（図４，図５では一方のみ示す）。またケース本体部７１の上辺は、下記するパッキン２５０を当接するパッキン搭載面８１となっている。 The second case 70 is formed by integrally molding a synthetic resin made of a non-transparent material, and protrudes from the substantially flat plate rectangular case body 71 and the upper center of the case body 71 toward the operation knob 100 side. It is configured to include a disc-shaped knob support portion 73 to be formed. The outer peripheral portion of the surface of the knob support portion 73 on the operation knob 100 side projects in a cylindrical shape, and a bottomed cylindrical protruding portion 75 is provided in the center of the inside. A pair of locking claws 77 project from the left and right sides of the case body 71 toward the operation knob 100 side. The locking claw 77 has a flat plate shape, and claw portions 79 are provided at both outer positions near the tip thereof (only one is shown in FIGS. 4 and 5). Further, the upper side of the case main body 71 is a packing mounting surface 81 that abuts the packing 250 described below.

操作つまみ１００は合成樹脂の成形品であり、透明材料と非透明材料からなる二色成形品である。操作つまみ１００は略円板形状であり、その外周面が操作部１０１となっている。操作つまみ１００の第２ケース７０側を向く面には、円形の凹部１０３が設けられ、凹部１０３内には、２つの筒状の突出部１０５，１０７が同心円状に突設されている。両突出部１０５，１０７の間の円形の凹部は、前記第２ケース７０の突出部７５を挿入する挿入部１０９となっている。また突出部１０７中央の凹部の底面は、略円錐凹状の光反射面１１０となっている。操作つまみ１００の第１ケース２０側を向く面の中央からは、略円柱形状の軸部１１１が突出している。軸部１１１の上面は摺動子取付面１１３となっており、さらに摺動子取付面１１３の中央からは円錐台形状の導光用突起１１５が突出している。導光用突起１１５の先端面は光入射面１１７になっている。摺動子取付面１１３上には、小突起からなる摺動子取付突部１１９が形成されている。軸部１１１の周囲には、リング状の防滴用凹部１２１が形成されている。また操作つまみ１００の第１ケース２０側を向く面の外周部分には、有底円形の穴からなるクリック機構収納部１２３が形成されている。クリック機構収納部１２３には、コイルバネ１２５とクリック用ボール１２７とが収納される。またクリック機構収納部１２３を設けたその外周部分は、操作つまみ１００の外周から外方に膨らんでおり、膨らんだ部分をストッパ部１２９としている。 The operation knob 100 is a molded product of synthetic resin, and is a two-color molded product made of a transparent material and a non-transparent material. The operation knob 100 has a substantially disk shape, and its outer peripheral surface serves as an operation unit 101. A circular recess 103 is provided on the surface of the operation knob 100 facing the second case 70, and two tubular protrusions 105 and 107 are concentrically projected in the recess 103. The circular recess between the protruding portions 105 and 107 is an insertion portion 109 into which the protruding portion 75 of the second case 70 is inserted. Further, the bottom surface of the concave portion at the center of the protruding portion 107 is a substantially conical concave light reflecting surface 110. A substantially cylindrical shaft portion 111 projects from the center of the surface of the operation knob 100 facing the first case 20 side. The upper surface of the shaft portion 111 is a slider mounting surface 113, and a truncated cone-shaped light guide projection 115 projects from the center of the slider mounting surface 113. The tip surface of the light guide projection 115 is a light incident surface 117. A slider mounting protrusion 119 made of small protrusions is formed on the slider mounting surface 113. A ring-shaped drip-proof recess 121 is formed around the shaft portion 111. Further, a click mechanism accommodating portion 123 formed of a bottomed circular hole is formed on the outer peripheral portion of the surface of the operation knob 100 facing the first case 20 side. The coil spring 125 and the click ball 127 are stored in the click mechanism storage unit 123. Further, the outer peripheral portion provided with the click mechanism storage portion 123 bulges outward from the outer circumference of the operation knob 100, and the bulging portion serves as a stopper portion 129.

また上述のように、操作つまみ１００は、２種類の樹脂Ａ１，Ａ２（図２参照）を一体成形することによって構成されている。一方の樹脂Ａ１は透明な樹脂であり、もう一方の樹脂Ａ２は不透明な樹脂である。透明な樹脂Ａ１は、その全体がつまみ用導光部Ａ１を構成し、この操作つまみ１００の軸部１１１と操作部１０１の間を光学的につないでおり、操作部１０１の外周面と、導光用突起１１５の光入射面１１７間を光学的に結ぶように成形されている。光入射面１１７は円形の平面状に形成されている。つまみ用導光部Ａ１は、略円板状の導光本体部Ａ１１と、導光本体部Ａ１１の中心から軸部１１１側に垂直に突出して軸部１１１の中心部分を構成する導光軸部Ａ１３とを具備している。導光本体部Ａ１１の導光軸部Ａ１３とは反対側の面の中央に、前記光反射面１１０が形成されている。また前記両突出部１０５，１０７も導光本体部Ａ１１の一部を構成している。一方、樹脂Ａ２は、導光本体部Ａ１１の光反射面１１０側の面の操作部１０１の裏面側の部分と、導光本体部Ａ１１の軸部１１１側の面略全体の部分とに形成されており、軸部１１１の導光軸部Ａ１３を除く部分と、摺動子取付面１１３と、防滴用凹部１２１とを構成している。 Further, as described above, the operation knob 100 is configured by integrally molding two types of resins A1 and A2 (see FIG. 2). One resin A1 is a transparent resin, and the other resin A2 is an opaque resin. The transparent resin A1 as a whole constitutes a light guide portion A1 for a knob, and optically connects between the shaft portion 111 and the operation portion 101 of the operation knob 100 to guide the outer peripheral surface of the operation portion 101. It is formed so as to optically connect the light incident surfaces 117 of the light projection 115. The light incident surface 117 is formed in a circular flat shape. The knob light guide portion A1 includes a substantially disk-shaped light guide main body A11 and a light guide shaft portion that projects vertically from the center of the light guide main body A11 toward the shaft portion 111 to form the central portion of the shaft portion 111. It is equipped with A13. The light reflecting surface 110 is formed in the center of the surface of the light guide main body A11 opposite to the light guide shaft A13. Further, both the protruding portions 105 and 107 also form a part of the light guide main body portion A11. On the other hand, the resin A2 is formed on a portion of the light guide main body A11 on the light reflecting surface 110 side on the back surface side of the operation portion 101 and a portion of the light guide main body A11 on the shaft portion 111 side of the entire surface. It comprises a portion of the shaft portion 111 excluding the light guide shaft portion A13, a slider mounting surface 113, and a drip-proof recess 121.

摺動子１３０は、弾性金属板製であって、基部１３１と、基部１３１の外周からアーチ状に突出してそれらの根元部分を折り返してなるアーム部１３３とを具備している。アーム部１３３の中央には、回路基板１６０側に向けて突出するように屈曲する接点部１３５が形成されている。また基部１３１には、小孔からなる取付孔１３７が形成されている。 The slider 130 is made of an elastic metal plate, and includes a base portion 131 and an arm portion 133 that protrudes from the outer periphery of the base portion 131 in an arch shape and has its root portion folded back. At the center of the arm portion 133, a contact portion 135 that bends so as to project toward the circuit board 160 side is formed. Further, the base 131 is formed with a mounting hole 137 formed of a small hole.

端子ユニット１４０は、６本の金属板製の端子１４１を、略矩形状の成形樹脂製の端子用ケース１４３と略四角柱状の端子保持ケース１４５にインサート成形して構成されている。各端子１４１の一端は端子用ケース１４３の後方の面から１列に６本突出しており、他端側は端子用ケース１４３の側面から突出して下方向に屈曲し、端子保持ケース１４５で固定された後にその先端が端子保持ケース１４５の下面から一列に６本突出している。 The terminal unit 140 is configured by insert molding six metal plate terminals 141 into a terminal case 143 made of a substantially rectangular molded resin and a terminal holding case 145 having a substantially square columnar shape. One end of each terminal 141 protrudes from the rear surface of the terminal case 143 in a row of six, and the other end side protrudes from the side surface of the terminal case 143 and bends downward and is fixed by the terminal holding case 145. After that, six tips are projected in a row from the lower surface of the terminal holding case 145.

回路基板１６０は、硬質で略矩形状の板からなる絶縁基板１６１の上部に、円形の貫通する挿通部１６３を設け、この挿通部１６３の周囲の前面側に、前記摺動子１３０の接点部１３５を摺接させる摺接パターン１６５を形成し、また絶縁基板１６１の下辺近傍に横一列に前記端子１４１の一端を挿入する６つの小孔からなる端子挿入孔１６７を形成し、さらに絶縁基板１６１の後面側の前記挿通部１６３の下部に発光素子１６９を取り付け、また所定位置に他の各種電子部品１７１を取り付けて構成されている。絶縁基板１６１上には、図示しない回路パターンが形成されており、前記摺接パターン１６５や発光素子１６９や各種電子部品１７１や前記端子挿入孔１６７に取り付けられる端子１４１間を電気的に接続する。摺接パターン１６５としては、スイッチパターンや抵抗体パターン等の種々のパターンが適用できる。 The circuit board 160 is provided with a circular penetrating insertion portion 163 on the upper portion of an insulating substrate 161 made of a hard and substantially rectangular plate, and a contact portion of the slider 130 is provided on the front surface side around the insertion portion 163. A sliding contact pattern 165 for sliding the 135 is formed, and a terminal insertion hole 167 composed of six small holes for inserting one end of the terminal 141 in a horizontal row is formed in the vicinity of the lower side of the insulating substrate 161, and further, the insulating substrate 161 is formed. A light emitting element 169 is attached to the lower portion of the insertion portion 163 on the rear surface side, and various other electronic components 171 are attached to predetermined positions. A circuit pattern (not shown) is formed on the insulating substrate 161 to electrically connect the sliding contact pattern 165, the light emitting element 169, various electronic components 171 and the terminals 141 attached to the terminal insertion holes 167. As the sliding contact pattern 165, various patterns such as a switch pattern and a resistor pattern can be applied.

導光体１９０は、透明な合成樹脂を、前面が解放された略矩形箱型に一体成形して構成されている。導光体１９０の前面側は凹状の基板収納部１９１となっており、その底面の上部から円柱状の光導出部１９３を突出している。基板収納部１９１は、前記回路基板１６０全体を収納して覆う形状に形成されている。光導出部１９３は前記回路基板１６０の挿通部１６３に挿入できる寸法に形成されており、その先端面は光出射面１９５となっている。光出射面１９５は円形の平面状に形成されており、前記光入射面１１７と同一の外径寸法に形成されている。また導光体１９０の上端面も光出射面１９７となっている。また、導光体１９０の後面側には、光出射面１９５方向に光を反射させる光反射面１９９と、光出射面１９７方向に光を反射させる光反射面２０１とが形成されている。 The light guide body 190 is formed by integrally molding a transparent synthetic resin into a substantially rectangular box shape having an open front surface. The front side of the light guide body 190 is a concave substrate storage portion 191, and a columnar light lead-out portion 193 projects from the upper part of the bottom surface thereof. The substrate accommodating portion 191 is formed in a shape that accommodates and covers the entire circuit board 160. The light lead-out portion 193 is formed to have a size that allows it to be inserted into the insertion portion 163 of the circuit board 160, and its front end surface is a light emission surface 195. The light emitting surface 195 is formed in a circular plane shape, and is formed to have the same outer diameter dimension as the light incident surface 117. The upper end surface of the light guide body 190 is also a light emitting surface 197. Further, on the rear surface side of the light guide body 190, a light reflecting surface 199 that reflects light in the light emitting surface 195 direction and a light reflecting surface 201 that reflects light in the light emitting surface 197 direction are formed.

第３ケース２２０は、非透明な合成樹脂を略平板矩形状に成形して構成されており、前記第１ケース２０の後面を略覆う外形形状に形成されている。第３ケース２２０の左右両側辺からは、第１ケース側に向けて一対の係止爪２２１を突出している。係止爪２２１は平板状であり、その先端近傍の両外側位置に爪部２２３を設けている。 The third case 220 is formed by molding a non-transparent synthetic resin into a substantially flat plate rectangular shape, and is formed in an outer shape that substantially covers the rear surface of the first case 20. A pair of locking claws 221 project from the left and right sides of the third case 220 toward the first case side. The locking claw 221 has a flat plate shape, and claw portions 223 are provided at both outer positions near the tip thereof.

図３に示すように、パッキン２５０は、エラストマー等の弾性体を、横断面円形で略矩形のリング状に形成し、前方側の辺と左右両側辺を直線状に、後方側の辺を上方向に円弧状に湾曲した形状として構成されている。 As shown in FIG. 3, in the packing 250, an elastic body such as an elastomer is formed in a ring shape having a circular cross section and a substantially rectangular shape, the front side and the left and right sides are linear, and the rear side is upward. It is configured as a shape curved in an arc shape in the direction.

図６は第４ケース３００を後側の下側から見た斜視図である。同図及び図２，図３等に示すように、第４ケース３００は、合成樹脂の成形品であり、下面が解放された略矩形箱型に成形して構成されており、これによって第４ケース３００の下面に本体ユニット１０の上部の部分を覆って収納するケース本体収納部３０１を形成している。第４ケース３００の上面（化粧面）３０３の前記操作つまみ１００に対向する位置には、操作つまみ１００の操作部１０１の一部を露出する開口３０５が形成され、また前記導光体１９０の光出射面１９７に対向する位置には、照光部３０７が形成されている。照光部３０７は、第４ケース３００を構成する透明な成形樹脂の表面に塗布した不透光性の塗装を、所望の文字や記号等の形状にレーザー等によって切り欠くことで形成されているが、他の種々の方法によって形成しても良い。また第４ケース３００の左右両側面には、それぞれ前記第１ケース２０の係止部３０を係止する矩形状の貫通孔からなる被係止部３０９が形成されている。第４ケース３００の開口３０５の周囲の裏面側には、開口３０５を囲むように、パッキン搭載面３１１（３１１ａ〜３１１ｄ、但し３１１ｃは図示せず）が形成されている。パッキン搭載面３１１は、略矩形リング状（パッキン２５０と同様の形状）の面を形成するように構成されている。 FIG. 6 is a perspective view of the fourth case 300 as viewed from the lower side on the rear side. As shown in FIGS. 2 and 3 and the like, the fourth case 300 is a molded product of synthetic resin, and is formed by molding into a substantially rectangular box shape with an open lower surface, whereby the fourth case 300 is formed. A case main body storage portion 301 is formed on the lower surface of the case 300 to cover and store the upper portion of the main body unit 10. An opening 305 that exposes a part of the operation portion 101 of the operation knob 100 is formed at a position of the upper surface (decorative surface) 303 of the fourth case 300 facing the operation knob 100, and the light of the light guide body 190 is formed. An illumination unit 307 is formed at a position facing the exit surface 197. The illuminated portion 307 is formed by cutting out a translucent coating applied to the surface of the transparent molding resin constituting the fourth case 300 into a desired shape such as a character or a symbol by a laser or the like. , May be formed by various other methods. Further, on the left and right side surfaces of the fourth case 300, locked portions 309 formed of rectangular through holes for locking the locking portions 30 of the first case 20, respectively, are formed. On the back surface side around the opening 305 of the fourth case 300, a packing mounting surface 311 (311a to 311d, but 311c is not shown) is formed so as to surround the opening 305. The packing mounting surface 311 is configured to form a substantially rectangular ring-shaped surface (similar to the packing 250).

次に、回転式電子部品１を組み立てるには、まず、本体ユニット１０を組み立てる。即ち予め、操作つまみ１００の摺動子取付面１１３に摺動子１３０の基部１３１を載置し、その際、摺動子取付面１１３の摺動子取付突部１１９を摺動子１３０の取付孔１３７に挿入し、その先端を熱カシメして（又は圧入のみで）取り付けておく。また操作つまみ１００の防滴用凹部１２１内に、防滴用のグリスＧを充填しておく。一方、端子ユニット１４０の後方から突出する各端子１４１の先端を、回路基板１６０の各端子挿入孔１６７に挿入し、その反対側において回路基板上の図示しない回路パターンに半田ｈ（図２参照）によって固定しておく。 Next, in order to assemble the rotary electronic component 1, first, the main body unit 10 is assembled. That is, the base 131 of the slider 130 is placed on the slider mounting surface 113 of the operation knob 100 in advance, and at that time, the slider mounting protrusion 119 of the slider mounting surface 113 is mounted on the slider 130. It is inserted into the hole 137, and the tip thereof is heat-caulked (or press-fitted only) to attach it. Further, the drip-proof recess 121 of the operation knob 100 is filled with drip-proof grease G. On the other hand, the tip of each terminal 141 protruding from the rear of the terminal unit 140 is inserted into each terminal insertion hole 167 of the circuit board 160, and soldered to a circuit pattern (not shown) on the circuit board on the opposite side (see FIG. 2). It is fixed by.

そして、第１ケース２０の第１収納部２３内に、前記摺動子１３０を取り付け且つコイルバネ１２５とクリック用ボール１２７をクリック機構収納部１２３に収納した操作つまみ１００を収納し、その際、操作つまみ１００の軸部１１１を、第１ケース２０の軸受部２１内に回動自在に挿入し、軸支する。このとき、操作つまみ１００のグリスＧを充填した防滴用凹部１２１内に、第１ケース２０の軸受部２１が挿入されることで、防滴処理部が形成される。次に、前記操作つまみ１００の前方側の側面を覆うように、第２ケース７０を取り付け、係止爪７７の爪部７９を第１ケース２０の被係止部２７に係止し、これによって操作つまみ１００を挟んだ状態で第２ケース７０を第１ケース２０に取り付ける。このとき、第２ケース７０のつまみ支持部７３が操作つまみ１００の前方側の側面を覆い、その突出部７５が操作つまみ１００の挿入部１０９に挿入される。 Then, the operation knob 100 in which the slider 130 is attached and the coil spring 125 and the click ball 127 are stored in the click mechanism storage unit 123 is stored in the first storage unit 23 of the first case 20, and at that time, the operation is performed. The shaft portion 111 of the knob 100 is rotatably inserted into the bearing portion 21 of the first case 20 to support the shaft. At this time, the drip-proof processing portion is formed by inserting the bearing portion 21 of the first case 20 into the drip-proof recess 121 filled with the grease G of the operation knob 100. Next, the second case 70 is attached so as to cover the front side surface of the operation knob 100, and the claw portion 79 of the locking claw 77 is locked to the locked portion 27 of the first case 20. The second case 70 is attached to the first case 20 with the operation knob 100 sandwiched between them. At this time, the knob support portion 73 of the second case 70 covers the front side surface of the operation knob 100, and the protruding portion 75 is inserted into the insertion portion 109 of the operation knob 100.

次に、前記端子ユニット１４０を取り付けた回路基板１６０と導光体１９０とを、第１ケース２０の第２収納部２５内に収納し、さらにその上から第３ケース２２０を被せる。そして第３ケース２２０の各爪部２２３を、第１ケース２０の各被係止部２９に係止し、これによって図３に示すような本体ユニット１０が完成する。 Next, the circuit board 160 to which the terminal unit 140 is attached and the light guide body 190 are housed in the second storage portion 25 of the first case 20, and further covered with the third case 220 from above. Then, each claw portion 223 of the third case 220 is locked to each locked portion 29 of the first case 20, thereby completing the main body unit 10 as shown in FIG.

このとき、第１ケース２０と第２ケース７０の間の上面には開口Ｈ１が形成され、第１ケース２０と第３ケース２２０の間の上面には開口Ｈ２（図２参照）が形成される。そして開口Ｈ１内には、操作つまみ１００の操作部１０１の一部が外部（上方）に突出するように露出する。また開口Ｈ２内には、導光体１９０の光出射面１９７が外部（上方）に突出するように露出する。また、図２に示すように、回路基板１６０の摺接パターン１６５には、摺動子１３０の接点部１３５が当接している。またこのとき、端子ユニット１４０は、端子ユニット収納部３１内に収納されている。またこのとき、導光体１９０の外周辺は、第１ケース２０の導光体１９０側を向く面に当接し、回路基板１６０を覆っている。また導光体１９０の光導出部１９３は、回路基板１６０の挿通部１６３に挿入され、その先端の光出射面１９５は操作つまみ１００の光入射面１１７に接近して、薄い隙間ａ１を介して対向している。 At this time, an opening H1 is formed on the upper surface between the first case 20 and the second case 70, and an opening H2 (see FIG. 2) is formed on the upper surface between the first case 20 and the third case 220. .. Then, a part of the operation portion 101 of the operation knob 100 is exposed in the opening H1 so as to project outward (upward). Further, the light emitting surface 197 of the light guide body 190 is exposed in the opening H2 so as to project outward (upward). Further, as shown in FIG. 2, the contact portion 135 of the slider 130 is in contact with the sliding contact pattern 165 of the circuit board 160. At this time, the terminal unit 140 is housed in the terminal unit storage unit 31. At this time, the outer periphery of the light guide body 190 abuts on the surface of the first case 20 facing the light guide body 190 side and covers the circuit board 160. Further, the light guiding portion 193 of the light guide body 190 is inserted into the insertion portion 163 of the circuit board 160, and the light emitting surface 195 at the tip thereof approaches the light incident surface 117 of the operation knob 100 and passes through the thin gap a1. Facing each other.

次に、図３に示すパッキン２５０を、第４ケース３００のケース本体収納部３０１内に挿入し、第４ケース３００のパッキン搭載面３１１（３１１ａ〜３１１ｄ）に当接・設置する。そして、このパッキン２５０を取り付けた第４ケース３００を、本体ユニット１０の上から被せるように取り付ける。即ち、第４ケース３００のケース本体収納部３０１内に本体ユニット１０の上部を収納し、その際、本体ユニット１０の各係止部３０を、第４ケース３００の各被係止部３０９に係止し、これによって回転式電子部品１の組み立てを完了する。なお上記組立手順はその一例であり、他の各種異なる組立手順を用いて組み立てても良いことはいうまでもない。 Next, the packing 250 shown in FIG. 3 is inserted into the case body storage portion 301 of the fourth case 300, and is brought into contact with and installed on the packing mounting surfaces 311 (311a to 311d) of the fourth case 300. Then, the fourth case 300 to which the packing 250 is attached is attached so as to cover the main body unit 10. That is, the upper part of the main body unit 10 is stored in the case main body storage portion 301 of the fourth case 300, and at that time, each locking portion 30 of the main body unit 10 is engaged with each locked portion 309 of the fourth case 300. Stop, thereby completing the assembly of the rotary electronic component 1. The above assembly procedure is an example, and it goes without saying that the assembly may be performed using various other different assembly procedures.

このとき、図１，図２に示すように、操作つまみ１００の操作部１０１の一部は、開口３０５から露出する。また第４ケース３００の照光部３０７の下面（裏面）に対向する位置に、導光体１９０の光出射面１９７が配置される。またこのとき、パッキン２５０は、第４ケース３００のパッキン搭載面３１１（３１１ａ〜３１１ｄ）と、前記本体ユニット１０のパッキン搭載面３３（３３ａ〜３３ｃ），８１との間で挟持され、密閉される。 At this time, as shown in FIGS. 1 and 2, a part of the operation unit 101 of the operation knob 100 is exposed from the opening 305. Further, the light emitting surface 197 of the light guide body 190 is arranged at a position facing the lower surface (back surface) of the illuminated portion 307 of the fourth case 300. At this time, the packing 250 is sandwiched and sealed between the packing mounting surfaces 311 (311a to 311d) of the fourth case 300 and the packing mounting surfaces 33 (33a to 33c) and 81 of the main body unit 10. ..

以上のようにして組み立てられた回転式電子部品１において、操作つまみ１００を回転すると、摺動子１３０の接点部１３５が回路基板１６０の摺接パターン１６５上を摺動し、これによって各端子１４１間の検出出力が変化する。なお、操作つまみ１００は、これを回転した際、そのストッパ部１２９（図５参照）が、第１ケース２０の第１収納部２３内に設けた左右一対のストッパ係止部３５（図４では一方のみ示す）に当接することで、約半回転以上回転しない。つまり操作つまみ１００は円弧運動をする。 In the rotary electronic component 1 assembled as described above, when the operation knob 100 is rotated, the contact portion 135 of the slider 130 slides on the sliding contact pattern 165 of the circuit board 160, whereby each terminal 141 The detection output during is changed. When the operation knob 100 is rotated, the stopper portion 129 (see FIG. 5) is provided with a pair of left and right stopper locking portions 35 (in FIG. 4) provided in the first storage portion 23 of the first case 20. By contacting (shown only one), it does not rotate more than about half a turn. That is, the operation knob 100 makes an arc motion.

そして発光素子１６９を発光すれば、その光は図２に一点鎖線で示すように、導光体１９０内に導入される。導光体１９０内に導入された光の一部は、光反射面２０１等で反射されることで前記光出射面１９７に向かい、その面から放出され、前記第４ケース３００の照光部３０７をその裏面側から明るく照らし出す。一方、発光素子１６９から導光体１９０内に導入された光の一部は、光反射面１９９等で反射されることで、前記光出射面１９５に向かい、その面から放出され、操作つまみ１００の光入射面１１７からつまみ用導光部Ａ１内に導入される。つまみ用導光部Ａ１内に導入された光は、導光軸部Ａ１３内を進み、光反射面１１０等で反射されることで、導光本体部Ａ１１内を進み、操作部１０１の外周面に導かれ、操作部１０１を明るく照らし出す。 Then, when the light emitting element 169 emits light, the light is introduced into the light guide body 190 as shown by the alternate long and short dash line in FIG. A part of the light introduced into the light guide body 190 is reflected by the light reflecting surface 201 or the like and directed toward the light emitting surface 197, and is emitted from the surface, and the illuminated portion 307 of the fourth case 300 is emitted. Brightly illuminate from the back side. On the other hand, a part of the light introduced into the light guide body 190 from the light emitting element 169 is reflected by the light reflecting surface 199 or the like, and is emitted toward the light emitting surface 195, and is emitted from the surface, and the operation knob 100 It is introduced into the light guide unit A1 for the knob from the light incident surface 117 of the above. The light introduced into the light guide unit A1 for the knob travels inside the light guide shaft portion A13 and is reflected by the light reflecting surface 110 or the like, so that it travels inside the light guide main body A11 and travels on the outer peripheral surface of the operation unit 101. Guided by, the operation unit 101 is illuminated brightly.

一方、この回転式電子部品１は、図示しない電子機器の操作パネルに装着され、その際、第４ケース３００の上面３０３が化粧面として、操作パネルの外部に露出する。そしてこの操作パネルの外部に露出した上面３０３に液体が降りかかることがある。降りかかった液体は、第４ケース３００の開口３０５からその内部に浸入する。浸入した液体は、第４ケース３００の内側面と、第１，第２ケース２０，７０の外側面との間の隙間から浸入しようとするが、その浸入は、パッキン２５０によって防止される。一方、本体ユニット１０の開口Ｈ１内へ浸入した液体の内の一部は、摺動子１３０側に浸入しようとするが、前記グリスＧを充填した防滴処理部によって、その浸入は阻止される。以上の各点から、第４ケース３００の開口３０５から内部に浸入しようとする液体を効果的に防滴することができる。 On the other hand, the rotary electronic component 1 is attached to an operation panel of an electronic device (not shown), and at that time, the upper surface 303 of the fourth case 300 is exposed to the outside of the operation panel as a decorative surface. Then, the liquid may fall on the upper surface 303 exposed to the outside of the operation panel. The falling liquid penetrates into the inside of the fourth case 300 through the opening 305. The infiltrated liquid tries to infiltrate through the gap between the inner surface of the fourth case 300 and the outer surfaces of the first and second cases 20, 70, but the infiltration is prevented by the packing 250. On the other hand, a part of the liquid that has infiltrated into the opening H1 of the main body unit 10 tries to infiltrate into the slider 130 side, but the infiltration is prevented by the drip-proof treatment portion filled with the grease G. .. From each of the above points, it is possible to effectively drip-proof the liquid that is about to enter the inside through the opening 305 of the fourth case 300.

以上説明したように、この回転式電子部品１は、回路基板１６０の一方の面側に、軸部１１１を中心に円運動（円弧運動や揺動運動を含む）する操作つまみ１００を設置し、操作つまみ１００と回路基板１６０の間に操作つまみ１００の前記運動に応じて出力を変化する摺動子１３０及び摺接パターン１６５からなる検出手段を設け、操作つまみ１００と回路基板１６０と検出手段とを第１〜第４ケース２０，７０，２２０，３００内に収納し、第４ケース３００に設けた開口３０５から操作つまみ１００の外周の操作部１０１の一部を露出し、回路基板１６０上に設置した発光素子１６９から発射された光を、回路基板１６０の発光素子１６９を設置した面側に配置した導光体１９０の内部に導入してこの導光体１９０の所望の位置に設けた光出射面１９５から出射させ、さらに操作つまみ１００の軸部１１１と操作部１０１の間を光学的につなぐつまみ用導光部Ａ１を設け、前記導光体１９０の光出射面１９５から出射した光を、つまみ用導光部Ａ１の軸部１１１側に位置する光入射面１１７から入射して操作部１０１に導く構成となっている。これによって、発光素子１６９から導光体１９０に導入された光を、操作つまみ１００に設けたつまみ用導光部Ａ１を通して、操作つまみ１００の操作部１０１に導くので、操作つまみ１００の操作部１０１を容易かつ確実に明るく照明することができる。またこの例のように、防滴のためにパッキン２５０を設置する関係で、構造上、導光体１９０によって直接操作つまみ１００の操作部１０１を照明できない場合であっても、操作部１０１を照明することが可能になる。 As described above, the rotary electronic component 1 is provided with an operation knob 100 that makes a circular motion (including an arc motion and a swing motion) about the shaft portion 111 on one surface side of the circuit board 160. A detection means including a slider 130 and a sliding contact pattern 165 that change the output according to the movement of the operation knob 100 is provided between the operation knob 100 and the circuit board 160, and the operation knob 100, the circuit board 160, and the detection means are provided. Is housed in the first to fourth cases 20, 70, 220, 300, and a part of the operation portion 101 on the outer periphery of the operation knob 100 is exposed from the opening 305 provided in the fourth case 300, and is placed on the circuit board 160. The light emitted from the installed light emitting element 169 is introduced into the light guide body 190 arranged on the surface side where the light emitting element 169 of the circuit board 160 is installed, and the light is provided at a desired position of the light guide body 190. Light emitted from the light emitting surface 195 of the light guide body 190 is emitted from the light emitting surface 195, and a light guide unit A1 for a knob is provided which optically connects the shaft portion 111 of the operation knob 100 and the operation unit 101. The light incident surface 117 located on the shaft portion 111 side of the knob light guide portion A1 is incident on the light incident surface 117 and is guided to the operation unit 101. As a result, the light introduced from the light emitting element 169 into the light guide body 190 is guided to the operation unit 101 of the operation knob 100 through the knob light guide unit A1 provided on the operation knob 100. Therefore, the operation unit 101 of the operation knob 100 Can be easily and surely illuminated brightly. Further, as in this example, since the packing 250 is installed for drip-proofing, the operation unit 101 is illuminated even when the operation unit 101 of the operation knob 100 cannot be directly illuminated by the light guide body 190 due to the structure. It becomes possible to do.

また発光素子１６９と操作つまみ１００を、回路基板１６０を挟んだ反対面側に設置しているので、回路基板１６０の一方の面側に検出手段等の回路を、もう一方の面側に発光素子１６９等の回路を配置できる。つまり、回路基板１６０の両面を有効に利用できる。また回路基板１６０の発光素子１６９を設置した面側に導光体１９０を、検出手段を設置した面側に操作つまみ１００を設置するので、導光体１９０と操作つまみ１００の両者が相互に干渉せず、両者の設計の自由度を高くすることができる。 Further, since the light emitting element 169 and the operation knob 100 are installed on the opposite surfaces side of the circuit board 160, a circuit such as a detection means is installed on one surface side of the circuit board 160, and the light emitting element is installed on the other surface side. A circuit such as 169 can be arranged. That is, both sides of the circuit board 160 can be effectively used. Further, since the light guide body 190 is installed on the surface side of the circuit board 160 where the light emitting element 169 is installed and the operation knob 100 is installed on the surface side where the detection means is installed, both the light guide body 190 and the operation knob 100 interfere with each other. It is possible to increase the degree of freedom in designing both.

また回路基板１６０には、導光体１９０又はつまみ用導光部Ａ１を挿入して光を通す挿通部１６３を設けたので、回路基板１６０の一方の側にある導光体１９０内の光を、もう一方の側にある操作つまみ１００のつまみ用導光部Ａ１内に、容易且つ確実に導入することができる。 Further, since the circuit board 160 is provided with an insertion portion 163 in which the light guide body 190 or the light guide portion A1 for knobs is inserted to allow light to pass through, the light in the light guide body 190 on one side of the circuit board 160 is emitted. , It can be easily and surely introduced into the light guide unit A1 for the knob of the operation knob 100 on the other side.

また導光体１９０の光出射面１９５と、つまみ用導光部Ａ１の光入射面１１７との間に接触防止用の隙間ａ１を形成したので、光出射面１９５と、円運動等する光入射面１１７とが接触して摺動・摩耗して生じる摩耗粉（カス）等によって光が乱反射し、つまみ用導光部Ａ１内に確実に光を導入できなくなることを防止することができる。 Further, since a gap a1 for preventing contact is formed between the light emitting surface 195 of the light guide body 190 and the light incident surface 117 of the knob light guide portion A1, the light incident surface 195 and the light incident surface such as circular motion are formed. It is possible to prevent the light from being diffusely reflected by the wear debris (dust) generated by the contact with the surface 117 and sliding / wear, and the light cannot be reliably introduced into the knob light guide portion A1.

以上本発明の実施形態を説明したが、本発明は上記実施形態に限定されるものではなく、特許請求の範囲、及び明細書と図面に記載された技術的思想の範囲内において種々の変形が可能である。なお直接明細書及び図面に記載がない何れの形状や構造や材質であっても、本願発明の作用・効果を奏する以上、本願発明の技術的思想の範囲内である。例えば、上記実施形態では、導光体の光出射面とつまみ用導光部の光入射面との間に接触防止用の隙間を形成したが、場合によっては両者を当接させてもよい。また導光体の光出射面とつまみ用導光部の光入射面は、何れも平面としたが、平面以外の形状であっても良い。また上記実施形態では、回路基板の挿通部に導光体の光出射面を形成した光導出部を挿入したが、その代わりに、つまみ用導光部の光入射面を形成した導光軸部の先端を挿入しても良い。また上記実施形態では、つまみ用導光部として中実な透明樹脂を用いたが、例えば内部に空間を設け、空間内を光が伝導するように構成してもよく、要は導光体の光出射面から出射した光がつまみ用導光部の光入射面から入射して操作部に導かれる構成であれば、どのような構成であっても良い。また上記実施形態では操作つまみの回動角度をストッパ機構によって規制したが（円弧運動）、３６０°回転可能（回転運動）に構成しても良く、また回転以外の揺動運動を行うように構成しても良い。また上記実施形態では、第４ケースの開口が真上方向を向くように設置したが、別の方向（例えば、斜め上方や水平方向や斜め下方等）を向くように設置しても良い。また発光素子の回路基板上での設置位置に種々の変更が可能であることは言うまでもない。また上記実施形態では、光反射面を円錐形状に形成したが、半球形状や多角錐形状等、他の種々の形状に形成しても良い。 Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of claims and the technical ideas described in the specification and drawings. It is possible. It should be noted that any shape, structure or material not directly described in the specification or drawings is within the scope of the technical idea of the present invention as long as the action and effect of the present invention are exhibited. For example, in the above embodiment, a gap for preventing contact is formed between the light emitting surface of the light guide body and the light incident surface of the knob light guide portion, but in some cases, both may be brought into contact with each other. Further, the light emitting surface of the light guide body and the light incident surface of the knob light guide portion are both flat, but may have a shape other than a flat surface. Further, in the above embodiment, the light derivation portion forming the light emitting surface of the light guide body is inserted into the insertion portion of the circuit board, but instead, the light guide shaft portion forming the light incident surface of the light guide portion for the knob is inserted. You may insert the tip of. Further, in the above embodiment, a solid transparent resin is used as the light guide portion for the knob, but for example, a space may be provided inside so that light can be conducted in the space. Any configuration may be used as long as the light emitted from the light emitting surface is incident from the light incident surface of the knob light guide unit and guided to the operation unit. Further, in the above embodiment, the rotation angle of the operation knob is regulated by the stopper mechanism (arc motion), but it may be configured to be rotatable 360 ° (rotational motion), or to perform a swing motion other than rotation. You may. Further, in the above embodiment, the opening of the fourth case is installed so as to face directly upward, but it may be installed so as to face another direction (for example, diagonally upward, horizontal direction, diagonally downward, etc.). Needless to say, the installation position of the light emitting element on the circuit board can be changed in various ways. Further, in the above embodiment, the light reflecting surface is formed in a conical shape, but it may be formed in various other shapes such as a hemispherical shape and a polygonal pyramid shape.

また、上記記載及び各図で示した実施形態は、その目的及び構成等に矛盾がない限り、互いの記載内容を組み合わせることが可能である。また、上記記載及び各図の記載内容は、その一部であっても、それぞれ独立した実施形態になり得るものであり、本発明の実施形態は上記記載及び各図を組み合わせた一つの実施形態に限定されるものではない。 In addition, the above description and the embodiments shown in each figure can be combined with each other as long as there is no contradiction in the purpose, configuration, and the like. Further, the above description and the description contents of each figure can be independent embodiments even if they are a part thereof, and the embodiment of the present invention is one embodiment in which the above description and each figure are combined. It is not limited to.

１回転式電子部品（電子部品）
２０第１ケース（ケース）
７０第２ケース（ケース）
１００操作つまみ
１０１操作部
１１１軸部
１１７光入射面
１３０摺動子（検出手段）
１６０回路基板
１６３挿通部
１６５摺接パターン（検出手段）
１６９発光素子
１９０導光体
１９５光出射面
２２０第３ケース（ケース）
３００第４ケース（ケース）
３０５開口
Ａ１つまみ用導光部
ａ１隙間 1 Rotating electronic parts (electronic parts)
20 First case (case)
70 Second case (case)
100 Operation knob 101 Operation unit 111 Shaft unit 117 Light incident surface 130 Slider (detection means)
160 Circuit board 163 Insertion part 165 Sliding contact pattern (detection means)
169 Light emitting element 190 Light guide body 195 Light emitting surface 220 Third case (case)
300 4th case (case)
305 Aperture A1 Knob light guide a1 Gap

Claims

An operation knob that has a disk shape on one surface side of the circuit board, the outer peripheral surface of which serves as an operation portion, and a circular motion, an arc motion, or a swing motion around a shaft portion protruding from the one surface. Is installed, a detection means that changes the output according to the movement of the operation knob is provided between the operation knob and the circuit board, and the operation knob, the circuit board, and the detection means are housed in the case and provided in the case. A part of the operation part on the outer circumference of the operation knob is exposed from the opening.
The light emitted from the light emitting element installed on the circuit board was introduced into the light guide body arranged on the surface side where the light emitting element of the circuit board was installed and provided at a desired position of the light guide body. It is a light guide structure for electronic components that emit light from the light emitting surface.
The operation knob has a light guide portion for a knob made of a transparent resin, and the light guide portion for the knob includes a light guide main body portion having the operation portion as an outer peripheral surface, and a shaft portion from the light guide main body portion. It is configured to include a light guide shaft portion that protrudes to the side and constitutes a central portion of the shaft portion.
The light emitting element and the operation knob are installed on opposite surfaces of the circuit board, respectively.
Further, the circuit board is provided with an insertion portion for passing light by inserting a light lead-out portion forming a light emitting surface of the light guide body or a light guide shaft portion forming a light incident surface of the knob light guide portion. Has been
The light emitted from the light emitting surface of the light guide body is incident from the light incident surface of the light guide shaft portion of the knob light guide portion and guided to the operation portion of the light guide main body portion of the knob light guide portion. A light guide structure for electronic components.

The light guide structure for electronic components according to claim 1.
A light guide structure for electronic components, characterized in that a gap for preventing contact is formed between the light emitting surface of the light guide body and the light incident surface of the knob light guide portion.

The light guide structure for electronic components according to claim 1 or 2.
In the light guide body, in addition to a light emitting surface that emits light toward the light incident surface of the knob light guide portion, a light emitting surface that emits light toward the back surface of the illuminating portion provided in the case. A light guide structure for electronic parts, which is characterized by being provided with.