JP7007794B2

JP7007794B2 - Actuator for valve

Info

Publication number: JP7007794B2
Application number: JP2016193327A
Authority: JP
Inventors: 仁唐沢; 弘喜大野; 晃央小川
Original assignee: Kitz Corp
Current assignee: Kitz Corp
Priority date: 2016-09-30
Filing date: 2016-09-30
Publication date: 2022-01-25
Anticipated expiration: 2036-09-30
Also published as: JP2018055005A

Description

本発明は、隣接する複数のＬＥＤにより機器の状態を表示するためのＬＥＤ表示構造と、このＬＥＤ表示構造により動作状態を外部から視認可能に設けたバルブ用アクチュエータに関する。 The present invention relates to an LED display structure for displaying the state of a device by a plurality of adjacent LEDs, and a valve actuator provided so that the operating state can be visually recognized from the outside by the LED display structure.

近年、電気製品、計測機器等の機器において、ＬＥＤ（light emitting diode：発光ダイオード）による光源を用いて動作状態を表示する場合が一般的になっている。この場合、動作状態を判別するためには、２箇所以上に複数の発光点を設けることも多い。その際、これらの発光点が離れていると、視認性が低下したり製作も複雑になる等の理由から、通常は隣接した集積状態に配置される。これら発光点が隣接している場合には、一方の点灯（点滅）状態のＬＥＤの光が、近接した他方の発光箇所から漏れて、消灯状態であるにもかかわらず、これを点灯（点滅）状態に誤認識する可能性が生じる。隣接するＬＥＤ光源の発光色が異なる場合、これらの発光色が混合した状態で発色し、本来の色を識別できなくなる可能性もある。 In recent years, in devices such as electrical products and measuring devices, it has become common to display an operating state using a light source using an LED (light emitting diode). In this case, in order to determine the operating state, a plurality of light emitting points are often provided at two or more points. At that time, if these light emitting points are separated from each other, they are usually arranged in an adjacent integrated state because the visibility is lowered and the manufacturing is complicated. When these light emitting points are adjacent to each other, the light of one LED in the lit (blinking) state leaks from the other adjacent light emitting point, and the light is lit (blinking) even though it is in the extinguished state. There is a possibility of erroneous recognition of the state. If the emission colors of adjacent LED light sources are different, the emission colors may be mixed and developed, and the original color may not be discriminated.

この対策として、隣接する各ＬＥＤ光源の周りを専用の遮蔽部材で取り囲み、この遮蔽部材で隣接するＬＥＤ同士の影響を抑えようとするものが知られている。
例えば、特許文献１のＬＥＤ表示装置では、遮光カバーが機器本体と別体に設けられ、この遮光カバーの遮光筒部を介して、制御基板の複数のＬＥＤを前面パネルの表示窓から個別に視認するようになっている。
一方、特許文献２のＬＥＤ表示装置では、ＬＥＤ光源からの光が、導光ユニットを介して操作パネル面に導かれ、操作パネル面の直下裏面に設けられた遮光リブにより、光の漏れを防ごうとしている。 As a countermeasure, it is known that each adjacent LED light source is surrounded by a dedicated shielding member, and the shielding member tries to suppress the influence of adjacent LEDs.
For example, in the LED display device of Patent Document 1, a light-shielding cover is provided separately from the main body of the device, and a plurality of LEDs on the control board are individually visually recognized from the display window of the front panel via the light-shielding cylinder portion of the light-shielding cover. It is designed to do.
On the other hand, in the LED display device of Patent Document 2, the light from the LED light source is guided to the operation panel surface via the light guide unit, and the light leakage is prevented by the light-shielding rib provided on the back surface directly below the operation panel surface. I'm trying.

ところで、この種のＬＥＤ表示構造が用いられる機器として、例えば、バルブ用アクチュエータが知られ、このうち、コンパクト型の電動アクチュエータで利用されることも多い。小型の電動アクチュエータは、一般に、外部がカバーで覆われ、その内部にはモータや歯車減速機構、外部への動作表示用基板、動作制御用基板等の部品が収納され、カバーの上面側には、動作状態等を示す表示部が設けられている。表示用基板は、アクチュエータのコンパクト化に対応して集積化され、カバー内部の表示部の背面側に近接して取付けられている。表示用基板には、複数のＬＥＤが配設され、これらＬＥＤの点灯或は消灯により、バルブの動作状態の有無や、動作不能のエラーの状態等がカバー外部より視認可能になっている。 By the way, as a device in which this kind of LED display structure is used, for example, a valve actuator is known, and among these, a compact electric actuator is often used. In general, the outside of a small electric actuator is covered with a cover, and parts such as a motor, a gear reduction mechanism, an external operation display board, and an operation control board are housed inside the cover, and the upper surface side of the cover is used. , A display unit showing an operating state, etc. is provided. The display board is integrated in response to the compactification of the actuator, and is mounted close to the back side of the display portion inside the cover. A plurality of LEDs are arranged on the display board, and by turning on or off these LEDs, the presence or absence of an operating state of the bulb, the state of an inoperable error, and the like can be visually recognized from the outside of the cover.

特許第４２１４６２２号公報Japanese Patent No. 4214622 特許第５０３５０４６号公報Japanese Patent No. 5035046

前述の特許文献１や特許文献２のＬＥＤ表示装置の場合、隣接する発光点であるＬＥＤの互いの干渉を避けるために、遮光カバーや、遮光リブを有する導光ユニットが別途必要になる。このことから、部品点数が多くなって構造も複雑化し、操作パネル面やその周囲にこれらの部品をあらたに取付ける必要も生じるため、組立工数も増加するという問題も有している。
しかも、最近では、ＬＥＤを搭載した機器全般について小型化が要求されることが多く、例えば、バルブ用電動アクチュエータにおいても、小型化の要求に伴って、内装される部品のコンパクト化や高密度化による搭載が推進されている。この場合、特許文献１の遮光カバーや、特許文献２の導光ユニット等の遮光用部品は、基板上のＬＥＤやその他の電子部品に物理的に干渉するため、配置することが難しい。さらには、プリント基板も高密度化することで、これら新規の遮光用部品の取付けが一層難しくなる。 In the case of the LED display devices of Patent Document 1 and Patent Document 2 described above, a light-shielding cover and a light guide unit having a light-shielding rib are separately required in order to avoid mutual interference of LEDs that are adjacent light emitting points. As a result, the number of parts increases, the structure becomes complicated, and it becomes necessary to newly attach these parts to the operation panel surface and its surroundings, which also causes a problem that the assembly man-hours increase.
Moreover, in recent years, there have been many demands for miniaturization of all devices equipped with LEDs. For example, in electric actuators for bulbs, the interior parts have become more compact and denser in response to the demand for miniaturization. Is being promoted. In this case, it is difficult to arrange the light-shielding parts such as the light-shielding cover of Patent Document 1 and the light guide unit of Patent Document 2 because they physically interfere with the LED and other electronic parts on the substrate. Furthermore, as the density of the printed circuit board increases, it becomes more difficult to attach these new light-shielding parts.

仮に、遮光用部品を取付け可能な空間がアクチュエータ内に存在する場合でも、アクチュエータの小型化に伴って、遮光用部品とＬＥＤを含む実装部品との空間を十分に確保することができなくなる。このために、仮に、遮光用部品が樹脂であったとしても絶縁が不十分になりやすく、遮光用部品やその周辺の部品が結露や周囲の汚染物質で汚染されて、電気的絶縁性能の低下が著しくなり、誤作動や故障、感電の原因になる。 Even if there is a space in the actuator to which the light-shielding component can be attached, it becomes impossible to sufficiently secure the space between the light-shielding component and the mounting component including the LED due to the miniaturization of the actuator. For this reason, even if the light-shielding parts are made of resin, the insulation tends to be insufficient, and the light-shielding parts and surrounding parts are contaminated with dew condensation and surrounding pollutants, resulting in deterioration of electrical insulation performance. It becomes remarkable and causes malfunction, failure, and electric shock.

本発明は、従来の課題を解決するために開発したものであり、その目的とするところは、遮光用の別部品を設けることなく、高集積化された基板の隣接するＬＥＤに対して適切な空間を設けつつ遮蔽し、点灯或は消灯状態の誤認識や隣接するＬＥＤの発光色の混合を防いでＬＥＤの状態を外部から容易に識別可能にしたバルブ用アクチュエータを提供することを目的とする。 The present invention has been developed to solve the conventional problems, and its purpose is to be suitable for LEDs adjacent to a highly integrated substrate without providing a separate component for shading. It is an object of the present invention to provide a bulb actuator that shields a space while providing a space to prevent erroneous recognition of a lighting or extinguishing state and mixing of emission colors of adjacent LEDs so that the LED state can be easily identified from the outside. ..

上記目的を達成するため、請求項１に係る発明は、上部側の円板状の平面部と、略円筒状の円筒部とを有する略円筒状のカバーを備え、このカバーの平面部にＬＥＤ照射視認用の窓部が開口形成され、平面部の上面に円板状の操作パネルが固着され、カバーの操作パネルの裏面側には基板が固定されてカバーと基板とが一体に着脱可能なユニットとして構成され、基板には、操作パネルの上方から点灯或は消灯状態を視認可能な複数のＬＥＤと、操作スイッチとがＩＣ等の他の部品と共に表面実装され、基板とカバーとの間には、カバーへの基板の固定により、カバーに垂下形成された遮光壁が、基板上に隣接するＬＥＤ同士の間に対向状態に配置されると共に、遮光壁が、隣接する一方のＬＥＤの照射領域が他方のＬＥＤ用の窓部を透過することを防ぐ高さに設けられ、かつ、遮光壁と基板との間にこれら遮光壁と基板及びＬＥＤとの物理的な干渉を回避する空間距離が設けられ、加えて基板が、操作スイッチを操作パネルの上から操作可能なカバー内の位置に配置された状態で、カバーが、駆動用モータやこのモータの回転を減速する減速機を含む内部部品が収容されたアクチュエータ本体のベース体の一面に装着されたバルブ用アクチュエータである。 In order to achieve the above object, the invention according to claim 1 includes a substantially cylindrical cover having a disk-shaped flat surface portion on the upper side and a substantially cylindrical cylindrical portion, and an LED is provided on the flat surface portion of the cover. An opening is formed for the LED viewing window, a disk-shaped operation panel is fixed to the upper surface of the flat surface, and a substrate is fixed to the back side of the operation panel of the cover so that the cover and the substrate can be attached and detached integrally. It is configured as a unit, and on the board, a plurality of LEDs that can be visually checked on or off from above the operation panel and an operation switch are surface-mounted together with other parts such as an IC, and are placed between the board and the cover. Is that the light-shielding wall hanging from the cover is arranged in a facing state between the adjacent LEDs on the board by fixing the substrate to the cover, and the light-shielding wall is an irradiation area of one of the adjacent LEDs. Is provided at a height that prevents the light from passing through the window portion for the other LED, and a space distance is provided between the light-shielding wall and the substrate to avoid physical interference between the light-shielding wall and the substrate and the LED. In addition, with the board placed in a position within the cover where the operation switches can be operated from above the operation panel, the cover contains internal components, including the drive motor and the reducer that slows down the rotation of this motor. It is an actuator for a valve mounted on one surface of the base body of the housed actuator body.

請求項１に係る発明によると、遮光用の別部品を設けることなくこの遮光壁をカバーと一体に形成できるため、部品点数が増加したり構造が複雑化して組立工数が増加することもなく遮光壁により遮光可能になる。ＬＥＤを基板の所定位置に集積配置して基板パターンを簡略化しつつ、これら集積化されたＬＥＤ同士の照射領域が交わる位置を遮光壁により遮光し、ＬＥＤの指向特性が広い場合でも光の漏洩や相互の干渉を確実に阻止し、ＬＥＤの点灯或は消灯状態を誤認識したり、隣接するＬＥＤの発光色が合わさることを防ぎ、外部から点灯や点滅、消灯状態や光色を容易に識別可能になる。この場合、遮光壁を、基板との間に所定の空間距離を有した状態で配置することで、ＬＥＤに干渉することがないため、ＬＥＤの距離を確保でき、小型機器の内部にＬＥＤを配設する場合でも、電子部品との間を十分に絶縁して結露や汚染物質による汚染を防いで確実に絶縁することで、機器の動作に悪影響を及ぼすこともない。基板に、複数のＬＥＤと操作パネルの上から操作可能な操作スイッチとを表面実装しつつ、基板をカバーの所定位置に配置してこのカバーと一体にベース体に着脱することが可能となる。 According to the first aspect of the present invention, since this light-shielding wall can be integrally formed with the cover without providing a separate part for light-shielding, the number of parts does not increase or the structure becomes complicated and the assembly man-hours do not increase. The wall allows shading. While simplifying the board pattern by integrating and arranging the LEDs at predetermined positions on the substrate, the position where the irradiation areas of these integrated LEDs intersect is shielded by a light-shielding wall, and even if the directional characteristics of the LEDs are wide, light leakage or It surely prevents mutual interference, prevents misrecognition of LED lighting or extinguishing state, and prevents the emission colors of adjacent LEDs from matching, and makes it possible to easily identify lighting or blinking, extinguishing state or light color from the outside. become. In this case, by arranging the light-shielding wall with a predetermined space distance from the substrate, the LED does not interfere with the light-shielding wall, so that the LED distance can be secured and the LED is arranged inside the small device. Even when it is installed, it does not adversely affect the operation of the equipment by sufficiently insulating it from the electronic components to prevent dew condensation and contamination by contaminants and ensuring insulation. While surface-mounting a plurality of LEDs and an operation switch that can be operated from above the operation panel on the board, the board can be arranged at a predetermined position on the cover and attached to and detached from the base body integrally with the cover.

基板を覆うカバーに各ＬＥＤに対向する窓部を設け、これら窓部の間に遮光壁を設けた構成であるため、この遮光壁をカバーの上面側から所望の長さで一体形成できる。これにより、遮光壁を、一方のＬＥＤの照射領域が他方のＬＥＤ用の窓部を透過することを防止できる長さに調整し、このカバーに基板を取付けることで、基板上に集積配置されたＬＥＤの間の適切な位置に遮光壁を配置でき、遮光壁の位置調整を必要とすることなく、隣接するＬＥＤ同士の互いの照射領域への悪影響を確実に防止する。
Since the cover covering the substrate is provided with a window portion facing each LED and a light-shielding wall is provided between these windows, the light-shielding wall can be integrally formed from the upper surface side of the cover with a desired length. As a result, the light-shielding wall was adjusted to a length that could prevent the irradiation area of one LED from passing through the window portion for the other LED, and by attaching the substrate to this cover, it was integrated and arranged on the substrate. The light-shielding wall can be arranged at an appropriate position between the LEDs, and the position of the light-shielding wall does not need to be adjusted, so that the adverse effects of the adjacent LEDs on each other's irradiation area can be reliably prevented.

ＬＥＤを表面実装により基板に配設していることにより、電子部品を高密度に配置しながら、基板全体の高さを低く抑えてこの基板を機器内の狭い空間に配設可能になり、全体をコンパクト化しながら隣接するＬＥＤの光を確実に遮蔽して視認性を向上できる。このとき、ＬＥＤをより表示側に近接させた状態で配置できるため、ＬＥＤ照射時の光度を高めることができる。 By arranging the LEDs on the board by surface mounting, it is possible to place the board in a narrow space inside the device while keeping the height of the entire board low while arranging the electronic components at high density. It is possible to improve visibility by reliably blocking the light of adjacent LEDs while making the size compact. At this time, since the LEDs can be arranged closer to the display side, the luminous intensity at the time of LED irradiation can be increased.

全体のコンパクト性を維持しながら操作パネル面にＬＥＤ表示構造を設けたバルブ用アクチュエータを提供でき、出力軸にステムを介してボール弁やニードル弁などの各種のバルブを接続し、これらバルブの開閉状態や動作の状況をＬＥＤで確認できる。この場合、隣接するＬＥＤの照射領域を遮光壁で確実に遮光していることで、操作パネル面を斜めの方向から見た場合にもＬＥＤの点灯或は消灯状態の誤認識を防止し、上方から視認したときには、隣接するＬＥＤの発光色の混合を防いで光色を容易に識別できる。しかも、上面側の操作パネル面にＬＥＤを集積した状態で設けることで、視線を動かすことなくバルブの状態を確認できるため視認性も高い。部品点数を増加したり、構造の複雑化を防止して簡易な構造によりカバーに対して予め遮光壁を形成できるため、組立の手間が増えることもない。
遮光用の別部品を設けることなく、カバーと一体形の遮光壁により省スペース化を図りつつ、内部部品の潤滑油の蒸発などの汚染物質による基板への影響を低減して、誤作動や故障、感電などを抑えることが可能になる。

We can provide valve actuators with an LED display structure on the operation panel surface while maintaining overall compactness, and connect various valves such as ball valves and needle valves to the output shaft via a stem to open and close these valves. You can check the status and operation status with the LED. In this case, by ensuring that the irradiation area of the adjacent LED is shielded from light by a light-shielding wall, it is possible to prevent erroneous recognition of the LED lighting or extinguishing state even when the operation panel surface is viewed from an oblique direction. When visually recognized from, the light color can be easily identified by preventing the mixture of the emission colors of the adjacent LEDs. Moreover, by providing the LEDs on the operation panel surface on the upper surface side in a state of being integrated, the state of the bulb can be confirmed without moving the line of sight, so that the visibility is high. Since the number of parts can be increased, the structure can be prevented from becoming complicated, and a light-shielding wall can be formed in advance for the cover with a simple structure, the labor for assembly does not increase.
Without installing a separate part for shading, a light-shielding wall integrated with the cover saves space, while reducing the influence of pollutants such as evaporation of lubricating oil on internal parts on the substrate, resulting in malfunction or failure. , It becomes possible to suppress electric shock.

バルブ用アクチュエータの一例を示す斜視図である。It is a perspective view which shows an example of the actuator for a valve. カバーの上部付近を示した一部切欠き拡大斜視図である。It is a partial notch enlarged perspective view which showed the vicinity of the upper part of a cover. アクチュエータの縦断面図である。It is a vertical sectional view of an actuator. カバーの底面図である。It is a bottom view of a cover. 図４におけるＡ－Ｂ－Ｃ－Ｄ－Ｅ－Ｆ断面図である。FIG. 4 is a cross-sectional view taken along the line ABCDEF in FIG. 図５におけるＧ部拡大断面図である。FIG. 5 is an enlarged cross-sectional view taken along the line G in FIG. ＬＥＤの指向特性を表したグラフである。It is a graph which showed the directivity of LED. カバー上部付近の一部拡大断面図である。It is a partially enlarged sectional view near the upper part of a cover.

以下に、本発明におけるＬＥＤ表示構造とバルブ用アクチュエータを図面に基づいて説明する。本発明のＬＥＤ表示構造は、各種の機器等に用いることが可能であり、その一例として、バルブ用アクチュエータに搭載された場合を述べる。図１においては、バルブ用アクチュエータの斜視図、図２は、アクチュエータのカバー上部付近の一部切欠き拡大斜視図、図３は、アクチュエータの縦断面図を示している。 Hereinafter, the LED display structure and the valve actuator in the present invention will be described with reference to the drawings. The LED display structure of the present invention can be used in various devices and the like, and as an example thereof, a case where the LED display structure is mounted on a valve actuator will be described. 1 is a perspective view of a valve actuator, FIG. 2 is an enlarged perspective view of a partial notch near the upper part of the cover of the actuator, and FIG. 3 is a vertical sectional view of the actuator.

図１～図３において、バルブ用アクチュエータ（以下、アクチュエータ本体１という）は、ボデー２を有し、このボデー２は、カバー３、ベース体４を備え、これらカバー３とベース体４とが着脱可能に設けられている。ボデー２内には、ＬＥＤ１０が搭載された表示制御用の基板１１、駆動制御用の基板１２、駆動用モータ１３、減速歯車列からなる減速機１４を含む内部部品１５が収容される。 In FIGS. 1 to 3, the valve actuator (hereinafter referred to as an actuator main body 1) has a body 2, and the body 2 includes a cover 3 and a base body 4, and the cover 3 and the base body 4 are detached from each other. It is provided as possible. Inside the body 2, an internal component 15 including a display control substrate 11 on which the LED 10 is mounted, a drive control substrate 12, a drive motor 13, and a reduction gear 14 including a reduction gear train is housed.

カバー３は、アルミを材料とするダイキャスト成形により、略円筒状の円筒部２０と、上面側の円板状の平面部２１とを有する形状に形成され、少なくとも基板１１を外部から覆うことが可能な形状に設けられる。図２又は図３において、カバー３の平面部２１には、ＬＥＤ１０、後述する７セグメントディスプレイ３１の表示用、及び操作スイッチ３２を操作するための図８に示す開口穴２１ａが形成される。平面部２１には、円板状の操作パネル２２が固着され、平面部２１の外周側には、操作パネル２２よりもやや大径の環状の外周嵌合部２３が、その内側に操作パネル２２を嵌合可能に段部状に形成される。外周嵌合部２３の高さは、操作パネル２２の厚さと略同じ寸法に設けられ、外周嵌合部２３の上部には、環状段部２４が外周嵌合部２３よりも拡径して形成される。このように、平面部２１は、２段の外周嵌合部２３、環状段部２４を介して形成される。 The cover 3 is formed into a shape having a substantially cylindrical cylindrical portion 20 and a disk-shaped flat surface portion 21 on the upper surface side by die-cast molding using aluminum as a material, and can cover at least the substrate 11 from the outside. It is provided in a possible shape. In FIG. 2 or 3, the flat surface portion 21 of the cover 3 is formed with an opening hole 21a shown in FIG. 8 for displaying the LED 10, the 7-segment display 31 described later, and operating the operation switch 32. A disk-shaped operation panel 22 is fixed to the flat surface portion 21, and an annular outer peripheral fitting portion 23 having a diameter slightly larger than that of the operation panel 22 is provided on the outer peripheral side of the flat surface portion 21. Is formed in a stepped shape so that it can be fitted. The height of the outer peripheral fitting portion 23 is provided to be substantially the same as the thickness of the operation panel 22, and an annular step portion 24 is formed on the upper portion of the outer peripheral fitting portion 23 with a diameter larger than that of the outer peripheral fitting portion 23. Will be done. In this way, the flat surface portion 21 is formed via the two-stage outer peripheral fitting portion 23 and the annular step portion 24.

図３に示すように、カバー３の表面には塗装部２５が施される。ここで、カバー３に塗装部２５を設ける場合、先ず、環状段部２４の内方を覆うように図示しないテープ等によりマスキングをおこない、次いで、カバー３全体に塗装部２５を施した後に、マスキングを取り外すようにする。これによって、外周嵌合部２３の内面への塗料の付着が防止される。 As shown in FIG. 3, a painted portion 25 is applied to the surface of the cover 3. Here, when the cover 3 is provided with the painted portion 25, first masking is performed with a tape or the like (not shown) so as to cover the inside of the annular step portion 24, and then the painted portion 25 is applied to the entire cover 3 and then masking. To remove. This prevents the paint from adhering to the inner surface of the outer peripheral fitting portion 23.

図４、図５において、平面部２１（操作パネル２２）の裏面には、ねじ２６の固定により基板１１が所定位置に配置され、このような構成によって、基板１１は、図３のベース体４に対してカバー３と一体に着脱可能になっている。図３において、基板１１上には、本発明のＬＥＤ表示構造により、複数のＬＥＤ１０が隣接した状態で、ＩＣ等の他の部品とともに実装部品３０として表面実装で配設され、さらに、基板１１上には、７セグメントディスプレイ３１、操作スイッチ３２などの実装部品３０も実装される。基板１１は、ＬＥＤ１０等の実装部品３０の実装面が上部に向けられた状態で配置される。 In FIGS. 4 and 5, the substrate 11 is arranged at a predetermined position on the back surface of the flat surface portion 21 (operation panel 22) by fixing the screws 26. With such a configuration, the substrate 11 is the base body 4 of FIG. On the other hand, it can be attached and detached integrally with the cover 3. In FIG. 3, according to the LED display structure of the present invention, a plurality of LEDs 10 are surface-mounted on the substrate 11 together with other components such as ICs as mounting components 30 in a state of being adjacent to each other, and further, on the substrate 11. A mounting component 30 such as a 7-segment display 31 and an operation switch 32 is also mounted on the vehicle. The substrate 11 is arranged with the mounting surface of the mounting component 30 such as the LED 10 facing upward.

図１～図６において、カバー３のＬＥＤ１０に対向する位置には、窓部４０が開口して形成され、この窓部４０を覆うように、前記操作パネル２２が平面部２１に取付けられ、操作パネル２２上面のＬＥＤ１０の位置には、このＬＥＤ１０の光を上面より放射可能な表示部４１、４２が設けられる。窓部４０は、ＬＥＤ１０が発光したときの光軸と同軸の位置になるように貫通形成され、窓部４０同士の間の操作パネル２２の裏面側には、遮光壁５０がＬＥＤ１０、１０同士の間に垂下された状態で一体に形成されている。 In FIGS. 1 to 6, a window portion 40 is formed by opening at a position of the cover 3 facing the LED 10, and the operation panel 22 is attached to the flat surface portion 21 so as to cover the window portion 40 for operation. At the position of the LED 10 on the upper surface of the panel 22, display units 41 and 42 capable of radiating the light of the LED 10 from the upper surface are provided. The window portion 40 is formed to penetrate so as to be coaxial with the optical axis when the LED 10 emits light, and on the back surface side of the operation panel 22 between the window portions 40, a light-shielding wall 50 is formed between the LEDs 10 and 10. It is integrally formed in a state of hanging between them.

遮光壁５０は、図６の一点鎖線に示した隣接するＬＥＤ１０、１０同士の照射領域Ｒが交わる位置に必要最小限の高さＨで配置され、この遮光壁５０により、隣接する一方のＬＥＤ１０の照射領域Ｒが他方のＬＥＤ１０用の窓部４０を透過することが防がれ、相互のＬＥＤ１０、１０の光線の干渉が回避される。この場合、遮光壁５０は、直列方向に配置された複数のＬＥＤ１０、１０に対して交差方向に設けられる。窓部は、カバー３の７セグメントディスプレイ３１、操作スイッチ３２が対向する位置にも、それぞれ形成されている。 The light-shielding wall 50 is arranged at a position where the irradiation regions R of the adjacent LEDs 10 and 10 shown in the alternate long and short dash line in FIG. It is prevented that the irradiation region R passes through the window portion 40 for the other LED 10, and the interference of the light rays of the LEDs 10 and 10 with each other is avoided. In this case, the light-shielding wall 50 is provided in the intersecting direction with respect to the plurality of LEDs 10 and 10 arranged in the series direction. The window portion is also formed at a position where the 7-segment display 31 and the operation switch 32 of the cover 3 face each other.

遮光壁５０と基板１１との間には、所定の空間距離Ｄが備えられ、この空間距離Ｄにより、基板１１と遮光壁５０とが接することの無い状態で、基板１１が取付けられている。
ここで、「所定の空間距離」とは、遮光壁５０と基板１１及びＬＥＤ１０との物理的な干渉を回避すると共に、電気的絶縁性能も確保できる空間距離をいう。 A predetermined space distance D is provided between the light-shielding wall 50 and the substrate 11, and the substrate 11 is attached in a state where the substrate 11 and the light-shielding wall 50 do not come into contact with each other due to the space distance D.
Here, the "predetermined space distance" means a space distance that can avoid physical interference between the light-shielding wall 50 and the substrate 11 and the LED 10 and secure electrical insulation performance.

図３において、カバー３の円筒部２０の下部開口部３ａは、ベース体４の上部外周に嵌合可能な内径に形成される。これにより、カバー３は、開口部３ａがベース体４の上部に嵌合され、開口部３ａの下端３ｂがベース体４に環状に形成された段状部５１に当接された状態で、ベース体４に仮着される。この状態で、図１に示すように、カバー３とベース体４とが、ビス５２により一体に固着される。 In FIG. 3, the lower opening 3a of the cylindrical portion 20 of the cover 3 is formed to have an inner diameter that can be fitted to the upper outer periphery of the base body 4. As a result, the cover 3 has a base in which the opening 3a is fitted to the upper portion of the base body 4 and the lower end 3b of the opening 3a is in contact with the stepped portion 51 formed in the base body 4 in an annular shape. Temporarily attached to body 4. In this state, as shown in FIG. 1, the cover 3 and the base body 4 are integrally fixed by the screw 52.

図１～図３において、ＬＥＤ１０は、操作パネル２２の上方から点灯（点滅）或は消灯状態を視認可能に、点灯時の光を透過可能に基板１１上に設けられ、本実施形態では、緑色に点灯する緑色ＬＥＤ１０ａと、赤色に点灯する赤色ＬＥＤ１０ｂとが、隣接状態で配設される。緑色ＬＥＤ１０ａは、操作パネル２２の「ＲＵＮ」を示す表示部４１の裏側に配置され、例えば、制御入力信号４～２０ｍＡにおいて、４．８ｍＡ以上の電流が入力されたときに点灯し、この「ＲＵＮ」の位置の表示部４１の点灯により、正常な信号入力を確認可能になっている。赤色ＬＥＤ１０ｂは、操作パネル２２の「ＥＲＲＯＲ」を示す表示部４２の裏側に配置され、例えば、減速機１４の出力側に設けられ、バルブに接続される出力軸５３がロックしたときなどに点灯し、この「ＥＲＲＯＲ」の位置の表示部４２の点灯により、動作不良の発生を確認可能になっている。 In FIGS. 1 to 3, the LED 10 is provided on the substrate 11 so that the lighting (blinking) or extinguishing state can be visually recognized from above the operation panel 22 and the light at the time of lighting can be transmitted. In the present embodiment, the LED 10 is green. The green LED 10a that lights up and the red LED 10b that lights up in red are arranged in an adjacent state. The green LED 10a is arranged on the back side of the display unit 41 indicating "RUN" of the operation panel 22, and is lit, for example, when a current of 4.8 mA or more is input in the control input signal 4 to 20 mA, and this "RUN". By lighting the display unit 41 at the position of ", normal signal input can be confirmed. The red LED 10b is arranged on the back side of the display unit 42 indicating "ERROR" of the operation panel 22, and is provided on the output side of the speed reducer 14, for example, and lights up when the output shaft 53 connected to the bulb is locked. By lighting the display unit 42 at the position of "ERROR", it is possible to confirm the occurrence of malfunction.

図７においては、表面実装型のＬＥＤ１０の指向特性を示している。ここで、「ＬＥＤの指向特性」とは、基板１１に搭載されたＬＥＤ１０の表面から発光する放射角度毎の光の強さを示すものであり、ＬＥＤ１０の仕様ごとにこの特性は異なる。本実施形態で使用するＬＥＤ１０では、図に示すように、このＬＥＤ１０の正面である０°の角度で光の強さの割合が１．０（１００％）であるとき、正面から４０°では約０．９（９０％）、５０°では約０．８（８０％）、８０°でも約０．３（３０％）の光の強さを有する指向特性となっている。前述した遮光壁５０を設ける場合、ＬＥＤ１０の指向特性を考慮した上でその高さＨを設定する必要がある。 FIG. 7 shows the directivity of the surface mount type LED 10. Here, the "directivity characteristic of the LED" indicates the intensity of light emitted from the surface of the LED 10 mounted on the substrate 11 for each radiation angle, and this characteristic differs depending on the specifications of the LED 10. In the LED 10 used in the present embodiment, as shown in the figure, when the ratio of light intensity is 1.0 (100%) at an angle of 0 ° in front of the LED 10, it is about 40 ° from the front. It has a directional characteristic with a light intensity of about 0.8 (80%) at 0.9 (90%) and 50 °, and about 0.3 (30%) at 80 °. When the above-mentioned light-shielding wall 50 is provided, it is necessary to set the height H in consideration of the directivity of the LED 10.

図６の遮光壁５０にＬＥＤ１０の指向特性を組合わせた状態において、ＬＥＤ１０表面・基板１１表面と操作パネル２２とは、非接触状態でかつ一定の距離Ｌが確保されているが、遮光壁５０が所定の高さＨに設定されていることで、この遮光壁５０を介して、隣接するＬＥＤ１０の指向特性の影響を受けることがないようになっている。

In the state where the directivity of the LED 10 is combined with the light-shielding wall 50 of FIG. 6, the surface of the LED 10 / the surface of the substrate 11 and the operation panel 22 are in a non-contact state and a certain distance L is secured, but the light-shielding wall 50 Is set to a predetermined height H so that it is not affected by the directivity of the adjacent LED 10 through the light-shielding wall 50.

仮に、遮光壁５０を設けていない場合、窓部４０と基板１１との間の距離Ｌを介して、一方のＬＥＤ１０の光がその指向特性により隣接するＬＥＤ１０の窓部４０から進入することになる。具体的には、図６において、遮光壁５０が無いときには、約５４°付近から約６５°の放射角度のＬＥＤ１０の光が隣接するＬＥＤ１０の窓部４０から進入し、この光が悪影響を及ぼすことになる。この場合、図７において、約５４°の放射角度では約０．７５の割合、約６５°の放射角度では約０．６の割合の光の強さであるため、隣接する表示部に与える影響は甚大となる。 If the light-shielding wall 50 is not provided, the light of one LED 10 enters from the window 40 of the adjacent LED 10 due to its directivity through the distance L between the window 40 and the substrate 11. .. Specifically, in FIG. 6, when there is no light-shielding wall 50, the light of the LED 10 having a radiation angle of about 65 ° from the vicinity of about 54 ° enters from the window portion 40 of the adjacent LED 10, and this light has an adverse effect. become. In this case, in FIG. 7, since the light intensity is about 0.75 at a radiation angle of about 54 ° and about 0.6 at a radiation angle of about 65 °, the effect on the adjacent display unit. Will be enormous.

これに対して、図６に示した長さ（高さＨ）の遮光壁５０を設けた場合、この遮光壁５０を介して、隣接するＬＥＤ１０の０°から約７０°程度までの放射角度の光を遮光できるため、この隣接するＬＥＤ１０の光が窓部４０から進入するおそれがない。
このように、遮光壁５０は、ＬＥＤ１０表面・基板１１表面と操作パネル２２との寸法、ＬＥＤ１０の指向特性、及びＬＥＤ１０同士の間隔や、各ＬＥＤ１０の光の強さに応じてその高さＨを設定すればよく、この所定の高さＨにより隣接する窓部４０を確実に遮光可能になる。この場合、遮光壁５０が高すぎると、ＬＥＤ１０や基板１１に接触する可能性が生じるため、隣接する窓部４０を遮光可能な程度の高さＨに留めつつ、前述した空間距離Ｄを設ければよい。 On the other hand, when the light-shielding wall 50 having the length (height H) shown in FIG. 6 is provided, the radiation angle of the adjacent LED 10 from 0 ° to about 70 ° is provided through the light-shielding wall 50. Since the light can be shielded, there is no possibility that the light of the adjacent LED 10 enters from the window portion 40.
As described above, the light-shielding wall 50 has a height H depending on the dimensions of the surface of the LED 10 / substrate 11 and the operation panel 22, the directivity of the LEDs 10, the distance between the LEDs 10, and the light intensity of each LED 10. It may be set, and the predetermined height H ensures that the adjacent window portion 40 can be shielded from light. In this case, if the light-shielding wall 50 is too high, it may come into contact with the LED 10 and the substrate 11. Therefore, the space distance D described above is provided while keeping the adjacent window portion 40 at a height H that allows light-shielding. Just do it.

図１、図２において、操作パネル２２は、カバー３上面に装着可能な円形のシート状に設けられ、図８に示すように、アルミ板６０、透明シリコンゴム６１、操作パネルシート６２による３層構造からなっている。アルミ板６０と透明シリコンゴム６１とは、焼き付けにより一体化され、これらによりパネル地板６３が構成される。アルミ板６０の窓部４０との対向位置には図示しない連通部位が形成され、この連通部位を介して、透明シリコンゴム６１、操作パネルシート６２を通して、操作パネルシート６２のＬＥＤ１０の表示部４１、４２、７セグメントディスプレイ３１の表示部位３１ａからの光を透過可能になり、操作パネル２２面に本発明のＬＥＤ表示構造によりＬＥＤ１０が設けられる。この場合、特に、表示部４１、４２は、ＬＥＤ１０、１０の光軸と同軸部分において、光を透過させて外部から発光の認識が容易になるように、透明に設けられている。さらに、アルミ板６０の操作スイッチ３２との対向位置には、連通部６０ａが設けられ、この連通部６０ａを介して透明シリコンゴム６１、操作パネルシート６２の上から操作スイッチ３２を操作可能に設けられている。 In FIGS. 1 and 2, the operation panel 22 is provided in the form of a circular sheet that can be attached to the upper surface of the cover 3, and as shown in FIG. 8, three layers of an aluminum plate 60, a transparent silicon rubber 61, and an operation panel sheet 62. It consists of a structure. The aluminum plate 60 and the transparent silicon rubber 61 are integrated by baking, and the panel base plate 63 is formed by these. A communication portion (not shown) is formed at a position facing the window portion 40 of the aluminum plate 60, and the transparent silicon rubber 61 and the operation panel sheet 62 are passed through the communication portion, and the LED 10 display portion 41 of the operation panel sheet 62. Light from the display portion 31a of the 42, 7-segment display 31 can be transmitted, and the LED 10 is provided on the operation panel 22 surface by the LED display structure of the present invention. In this case, in particular, the display units 41 and 42 are transparently provided so that light can be transmitted and the light emission can be easily recognized from the outside in the coaxial portion with the optical axis of the LEDs 10 and 10. Further, a communication portion 60a is provided at a position facing the operation switch 32 of the aluminum plate 60, and the operation switch 32 can be operated from above the transparent silicon rubber 61 and the operation panel sheet 62 via the communication portion 60a. Has been done.

図８において、操作パネルシート６２は、防水機能を有する透明樹脂からなり、透明シリコンゴム６１の上に接着により固定される。この構成により、操作パネル２２は、窓部４０を介してＬＥＤ１０や７セグメントディスプレイ３１の光を透過可能になっている。 In FIG. 8, the operation panel sheet 62 is made of a transparent resin having a waterproof function, and is fixed on the transparent silicon rubber 61 by adhesion. With this configuration, the operation panel 22 can transmit the light of the LED 10 and the 7-segment display 31 through the window portion 40.

操作パネル２２をカバー３に取付ける場合には、塗装部２５を設けたカバー３の外周嵌合部２３に操作パネル２２外周を嵌合させつつ、その底面を平面部２１に接着する。このとき、前述したように、外周嵌合部２３には塗装が施されていないため、硬質のパネル地板６３の外周を外周嵌合部２３に対して正確に位置決めしながら固着できる。 When the operation panel 22 is attached to the cover 3, the outer periphery of the operation panel 22 is fitted to the outer peripheral fitting portion 23 of the cover 3 provided with the painted portion 25, and the bottom surface thereof is adhered to the flat surface portion 21. At this time, as described above, since the outer peripheral fitting portion 23 is not painted, the outer periphery of the hard panel main plate 63 can be fixed while being accurately positioned with respect to the outer peripheral fitting portion 23.

その後、図に示すように、環状段部２４と、操作パネル２２の外周縁の各上面にかかるように、接着剤によるコーキング材６４でコーキングして防水加工を施す。このように、環状段部２４を設けていることにより、カバー塗装時の外周嵌合部２３のマスキングと、カバー３と操作パネル２２とのコーキングとを容易におこなうことができ、これにより、環状段部２４を設けない場合に比して、操作パネルシート６２の外周縁の内外周にまたがるようにコーキング材６４を配置できるため、防水機能を高めることが可能になる。 After that, as shown in the figure, the annular step portion 24 and the upper surface of each outer peripheral edge of the operation panel 22 are caulked with a caulking material 64 with an adhesive to be waterproofed. By providing the annular step portion 24 in this way, masking of the outer peripheral fitting portion 23 at the time of painting the cover and caulking between the cover 3 and the operation panel 22 can be easily performed, whereby the annular portion can be easily formed. As compared with the case where the step portion 24 is not provided, the caulking material 64 can be arranged so as to straddle the inner and outer periphery of the outer peripheral edge of the operation panel sheet 62, so that the waterproof function can be enhanced.

図３に示した内部部品１５のうち、モータ１３、減速機１４、駆動制御用の基板１２は、取付板６５を介してベース体４に固定される。モータ１３は、図示しない電源を介して回転軸が回動可能に設けられ、このモータの回転が減速機１４により減速され、その減速回転が出力軸５３を介してバルブステム６６に伝達可能に設けられている。 Of the internal components 15 shown in FIG. 3, the motor 13, the speed reducer 14, and the drive control substrate 12 are fixed to the base body 4 via the mounting plate 65. The motor 13 is provided so that a rotating shaft is rotatably provided via a power source (not shown), the rotation of the motor is decelerated by the speed reducer 14, and the decelerated rotation is transmitted to the valve stem 66 via the output shaft 53. Has been done.

なお、上記実施形態において、遮光壁５０をアルミダイキャスト成形でカバー３に一体成形しているが、カバーの材料をアルミ以外の各種材料としてもよく、例えば、樹脂成型により遮光壁をカバーに一体成形するようにしてもよい。遮光壁をカバーと別体に形成してもよく、この遮光壁を溶着や接着等の固着手段により、カバーに一体化することも可能である。なお、遮光壁５０を樹脂等の絶縁材料で成形した場合は、基板１１に対して空間距離Ｄを確保する他、アクチュエータの導電部分との沿面距離も確保することにより、電気的絶縁性を確保する。 In the above embodiment, the light-shielding wall 50 is integrally molded with the cover 3 by aluminum die-cast molding, but the cover material may be various materials other than aluminum. For example, the light-shielding wall is integrated with the cover by resin molding. It may be molded. The light-shielding wall may be formed separately from the cover, and the light-shielding wall may be integrated with the cover by fixing means such as welding or adhesion. When the light-shielding wall 50 is formed of an insulating material such as resin, the space distance D is secured with respect to the substrate 11, and the creepage distance with the conductive portion of the actuator is also secured to ensure electrical insulation. do.

また、２つのＬＥＤ１０、１０により各表示部を設けているが、このＬＥＤ１０の指向特性や光の強さ、色の種類などを適宜選択しながら、３つ以上のＬＥＤ１０による表示部を隣接状態に配置することもできる。 Further, although each display unit is provided by two LEDs 10 and 10, the display unit by three or more LEDs 10 is placed adjacent to each other while appropriately selecting the directivity characteristics, light intensity, color type, etc. of the LED 10. It can also be placed.

次いで、本発明のＬＥＤ表示構造とバルブ用アクチュエータの上記実施形態における作用を説明する。
本発明のＬＥＤ表示構造は、図１～図６において、基板１１上に複数のＬＥＤ１０を隣接状態で配置し、基板１１を覆うカバー３に各ＬＥＤ１０に対向する窓部４０、４０を設け、これら窓部４０、４０の間に遮光壁５０を配置し、この遮光壁５０で遮光した構造であることにより、一方のＬＥＤ１０の光が、その照射領域Ｒにより他方のＬＥＤ１０用の窓部４０を透過することを防いでいる。このことから、隣接するＬＥＤ１０、１０同士のうち、一方のＬＥＤ１０の光が他方のＬＥＤ１０と対向する窓部４０から進入してその表示部から漏れることを防止できる。 Next, the operation of the LED display structure and the valve actuator of the present invention in the above embodiment will be described.
In the LED display structure of the present invention, in FIGS. 1 to 6, a plurality of LEDs 10 are arranged adjacent to each other on the substrate 11, and windows 40, 40 facing each LED 10 are provided on a cover 3 covering the substrate 11. By arranging the light-shielding wall 50 between the windows 40 and 40 and light-shielding by the light-shielding wall 50, the light of one LED 10 is transmitted through the window portion 40 for the other LED 10 by the irradiation region R. It prevents you from doing it. From this, it is possible to prevent the light of one of the adjacent LEDs 10 and 10 from entering through the window portion 40 facing the other LED 10 and leaking from the display portion.

図６において、緑色ＬＥＤ１０ａと赤色ＬＥＤ１０ｂとからなる異なる発光色を用いた場合にも、これらの光の漏洩や相互の干渉を確実に阻止する。すなわち、一方のＬＥＤ１０のみが点灯している場合には、このＬＥＤ１０の指向特性と、遮光壁５０の高さＨとの関係を利用して、約５４°付近から約６５°の放射角度の光を遮光することで、他方のＬＥＤ１０の窓部４０への光の漏れを防止してこの他方側の消灯状態を維持し、誤認識を確実に防止可能になる。 In FIG. 6, even when different emission colors composed of the green LED 10a and the red LED 10b are used, leakage of these lights and mutual interference are surely prevented. That is, when only one of the LEDs 10 is lit, the light having a radiation angle of about 65 ° from about 54 ° is utilized by utilizing the relationship between the directivity of the LED 10 and the height H of the light-shielding wall 50. By blocking light from light, it is possible to prevent light from leaking to the window portion 40 of the other LED 10 and maintain the extinguished state on the other side, thereby reliably preventing erroneous recognition.

一方、緑色ＬＥＤ１０ａと赤色ＬＥＤ１０ｂとの両方が同時に点灯した場合にも、同様にＬＥＤ１０の指向特性と遮光壁５０の高さＨとの関係を利用して、隣接するＬＥＤ１０の窓部４０への光の漏れを防止し、双方のＬＥＤ１０、１０の光の混合干渉による変色を阻止して誤認識を防止できる。 On the other hand, even when both the green LED 10a and the red LED 10b are turned on at the same time, the light to the window portion 40 of the adjacent LED 10 is similarly utilized by utilizing the relationship between the directivity of the LED 10 and the height H of the light-shielding wall 50. It is possible to prevent leakage and prevent discoloration due to mixed interference of the lights of both LEDs 10 and 10 to prevent erroneous recognition.

遮光壁５０と基板１１との間に所定の空間距離Ｄを設けつつ、カバー３に遮光壁５０を形成しているため、遮光壁５０と基板１１との物理的な干渉を回避しながらＬＥＤ１０を配設でき、ＬＥＤ１０の強度を確保して故障等を防止できる。空間距離Ｄにより電気的絶縁性能も確保できるため、アクチュエータ本体１内に結露が生じた場合であっても、基板１１の回路のショート等による故障を防止できる。 Since the light-shielding wall 50 is formed on the cover 3 while providing a predetermined space distance D between the light-shielding wall 50 and the substrate 11, the LED 10 is installed while avoiding physical interference between the light-shielding wall 50 and the substrate 11. It can be arranged, and the strength of the LED 10 can be ensured to prevent failure or the like. Since the electrical insulation performance can be ensured by the space distance D, even if dew condensation occurs in the actuator main body 1, it is possible to prevent a failure due to a short circuit of the substrate 11 or the like.

このように、空間距離Ｄを確保しながらカバー３と内部部品１５とを非接触状態に配置していることで、高い安全性を発揮し、特に、アクチュエータ本体１が、高湿度環境、結露環境での使用が想定されている場合にも、優れた機能性を発揮可能となる。すなわち、別体の遮光パーツを取付けた場合のように、取付け不良や脱落等によって空間を確保できずにＬＥＤや基板上のパターン、基板上の電子部品等に接触することがないため、遮光壁５０の汚損や、結露水の付着による基板１１、１２の絶縁低下を防止できる。さらに、カバー３を導電性或いは非導電性の何れの材料で形成した場合にも、漏電や感電等の事故を防止可能となる。 By arranging the cover 3 and the internal component 15 in a non-contact state while ensuring the space distance D in this way, high safety is exhibited, and in particular, the actuator body 1 is in a high humidity environment and a dew condensation environment. Even when it is supposed to be used in, it can demonstrate excellent functionality. That is, unlike the case where a separate light-shielding part is attached, the space cannot be secured due to improper installation or dropping, and the light-shielding wall does not come into contact with the LED, the pattern on the board, the electronic parts on the board, etc. It is possible to prevent the 50 from being soiled and the insulation of the substrates 11 and 12 from being deteriorated due to the adhesion of dew condensation water. Further, when the cover 3 is made of either a conductive material or a non-conductive material, accidents such as electric leakage and electric shock can be prevented.

ＬＥＤ１０の点灯時には、空間距離Ｄを設けていることで、窓部４０に対してＬＥＤ１０の光の向きが直線に近づき、ＬＥＤ１０の指向特性により隣接する窓部４０にも強い光が照射されることになるが、遮光壁５０をＬＥＤ１０、１０同士の照射領域Ｒが交わる位置の高さＨまで形成しているため、指向性の広いＬＥＤ１０を用いる場合にも優れた遮光性を発揮する。 When the LED 10 is lit, the space distance D is provided so that the direction of the light of the LED 10 approaches a straight line with respect to the window portion 40, and the directivity characteristic of the LED 10 also irradiates the adjacent window portion 40 with strong light. However, since the light-shielding wall 50 is formed up to the height H at the position where the irradiation regions R of the LEDs 10 and 10 intersect, excellent light-shielding property is exhibited even when the LED 10 having a wide directivity is used.

遮光壁５０をカバー３に一体に設け、このカバー３に表示制御用の基板１１を取付けた構造としていることにより、基板１１をアクチュエータ本体１内の減速機１４から離した位置に配置できる。このため、減速機１４のギアに塗付されている潤滑油の蒸発が基板１１に与える影響を低減することができる。 Since the light-shielding wall 50 is integrally provided with the cover 3 and the display control substrate 11 is attached to the cover 3, the substrate 11 can be arranged at a position away from the speed reducer 14 in the actuator main body 1. Therefore, it is possible to reduce the influence of the evaporation of the lubricating oil applied to the gear of the speed reducer 14 on the substrate 11.

しかも、窓部４０、４０の間から遮光壁５０を垂下させて形成したことで、カバー３に基板１１を取付けるだけで窓部４０と対向する適切な位置にＬＥＤ１０を配置でき、遮光壁５０を位置調整することなく隣接するＬＥＤ１０、１０に悪影響を及ぼす照射領域Ｒを遮光できる。このように、遮光壁５０をカバー３に一体成形していることで、遮光用の部品を別途必要とすることがなく、部品点数や組立工数が増加することもない。集積化した基板１１に対してカバー３を大型化することなく遮光壁５０を形成できるため、アクチュエータ本体１のコンパクト化にもつながる。 Moreover, since the light-shielding wall 50 is formed by hanging from between the window portions 40, 40, the LED 10 can be arranged at an appropriate position facing the window portion 40 simply by attaching the substrate 11 to the cover 3, and the light-shielding wall 50 can be provided. The irradiation area R that adversely affects the adjacent LEDs 10 and 10 can be shielded from light without adjusting the position. As described above, since the light-shielding wall 50 is integrally molded with the cover 3, no parts for light-shielding are required separately, and the number of parts and the number of assembly steps are not increased. Since the light-shielding wall 50 can be formed on the integrated substrate 11 without increasing the size of the cover 3, the actuator main body 1 can be made compact.

遮光壁５０をカバー３側に設けていることで、アクチュエータ本体１の小型化に伴って、基板１１の図示しないパターン幅やクリアランス幅が縮小化され、表面実装により高密度化されている場合にも、遮光壁５０の取付スペースをあらたに必要とすることがないことで、基板１１の実装に制約を及ぼすこともない。 When the light-shielding wall 50 is provided on the cover 3 side, the pattern width and clearance width (not shown) of the substrate 11 are reduced as the actuator body 1 is miniaturized, and the density is increased by surface mounting. However, since the mounting space for the light-shielding wall 50 is not newly required, the mounting of the substrate 11 is not restricted.

以上、本発明の実施の形態について詳述したが、本発明は、前記実施の形態記載に限定されるものではなく、本発明の特許請求の範囲に記載されている発明の精神を逸脱しない範囲で、種々の変更ができるものである。 Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the description of the embodiments, and is within the scope of the invention described in the claims of the present invention. Therefore, various changes can be made.

１アクチュエータ本体
２ボデー
３カバー
１０ＬＥＤ
１１、１２基板
１３モータ
１４減速機
１５内部部品
２２操作パネル
４０窓部
５０遮光壁
５３出力軸
６６バルブステム
Ｄ空間距離
Ｒ照射領域 1 Actuator body 2 Body 3 Cover 10 LED
11, 12 Board 13 Motor 14 Reducer 15 Internal parts 22 Operation panel 40 Window 50 Light-shielding wall 53 Output shaft 66 Valve stem D Spatial distance R Irradiation area

Claims

A substantially cylindrical cover having a disk-shaped flat surface portion on the upper side and a substantially cylindrical cylindrical portion is provided, and a window portion for viewing LED irradiation is formed in the flat surface portion of the cover, and the flat surface portion is formed. A disk-shaped operation panel is fixed to the upper surface of the cover, a substrate is fixed to the back surface side of the operation panel of the cover, and the cover and the substrate are integrally detachable as a unit. A plurality of LEDs capable of visually recognizing the lighting or extinguishing state from above the operation panel and an operation switch are surface-mounted together with other parts such as an IC, and the cover is placed between the board and the cover. By fixing the substrate, a light-shielding wall hanging from the cover is arranged so as to face each other between the LEDs adjacent to each other on the substrate, and the light-shielding wall illuminates one of the adjacent LEDs. The region is provided at a height that prevents the area from passing through the window portion for the other LED, and physical interference between the light-shielding wall and the substrate and the substrate and the LED is caused between the light-shielding wall and the substrate. A space distance is provided to avoid, and in addition, the cover is placed on the drive motor and the rotation of the motor in a state where the board is arranged at a position in the cover in which the operation switch can be operated from above the operation panel. A valve actuator characterized in that it is mounted on one surface of the base body of an actuator body that houses internal parts including a speed reducer that slows down the LED.