JP2003281957A - Three way switch with indicator light - Google Patents
Three way switch with indicator lightInfo
- Publication number
- JP2003281957A JP2003281957A JP2002081010A JP2002081010A JP2003281957A JP 2003281957 A JP2003281957 A JP 2003281957A JP 2002081010 A JP2002081010 A JP 2002081010A JP 2002081010 A JP2002081010 A JP 2002081010A JP 2003281957 A JP2003281957 A JP 2003281957A
- Authority
- JP
- Japan
- Prior art keywords
- neon tube
- way switch
- circuit
- switch
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Switch Cases, Indication, And Locking (AREA)
Abstract
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は、表示灯付き３路ス
イッチ、詳しくは表示灯が誤発光しないようにした表示
灯付き３路スイッチに関する。
【０００２】
【従来の技術】従来、照明を２箇所に配置された３路ス
イッチで点灯・消灯させる際に、３路スイッチの設置場
所を明示するための表示灯付き３路スイッチが提案され
実用に供されている。この表示灯にはネオン管が用いら
れ３路スイッチの場所が夜間などにもすぐ判るように照
明が消灯しているときにはネオン管が発光し、照明が点
灯しているときにはネオン管が消灯するようにしたもの
である。
【０００３】３路スイッチは、図４に示すように、共通
端子１０ａ間に電源Ｐと負荷Ｌとが配線２０で接続され
るとともに切換端子１０ｂ、１０ｂ間と、切換端子１０
ｃ、１０ｃとはそれぞれ配線２１で接続されている。そ
して、切換端子１０ｂ、１０ｃ間にネオン管１１とネオ
ン管用抵抗１２とを直列に接続したネオン管回路１３を
設け、図５に示すように、両方の３路スイッチ１０の共
通端子１０ａ、１０ａを共に一方の切換端子１０ｂ、１
０ｂに接続するか又は共に他方の切換端子１０ｃ、１０
ｃに接続した場合（以下、この状態を３路スイッチがＯ
Ｎという）には両方の３路スイッチ１０、１０は通電状
態になり負荷である照明Ｌは点灯し、ネオン管回路１３
は非通電になるのでネオン管１１は消灯し、図４に示す
ように、３路スイッチがＯＮの状態において何れか一方
の３路スイッチを反転し、両方の３路スイッチ１０共通
端子１０ａがそれぞれ異なる切換端子１０ｂ、１０ｃに
接続された場合（以下、この状態を３路スイッチがＯＦ
Ｆという）の時には両方の３路スイッチ１０、１０は非
通電状態になり負荷である照明Ｌは消灯するが、照明な
どの負荷Ｌを通して微弱のネオン管発光電流ａ（約０．
１ｍＡ）がネオン管回路１３を流れるためにネオン管１
１が発光し、３路スイッチ１０の位置を知らせる位置表
示灯としての機能を発揮するようになっている。なお、
ネオン管回路１３のインピーダンスは照明Ｌよりもかな
り大きいことから照明は点灯することはない。
【０００４】
【発明が解決しようとする課題】しかしながら、図５に
示すように、配線された電線２０、２１には電線相互
間、及び電線２０、２１と大地Ｇとの間に静電容量Ｃ
１、Ｃ２が存在し、その配線の持つ静電容量Ｃ１、Ｃ２
を通して漏れ電流ｂが流れ、漏れ電流ｂが増加すると３
路スイッチ１０がＯＮ状態であるにもかかわらずネオン
管１１が誤発光してしまう問題があった。そのために、
図６に示すように、ネオン管回路１３に並列に抵抗１４
（２．２ＭΩ）を付加し、配線の静電容量によりネオン
管回路１３の電圧が上がらないようにしていた。
【０００５】配線（Ｆケーブル）２０、２１の静電容量
Ｃ（Ｃ１＋Ｃ２）は、０．０００２μＦ／ｍなので、配
線長３ｍの場合の静電容量Ｃは０．０００６μＦ、配線
長４ｍの場合の静電容量Ｃは０．０００８μＦになり、
電源周波数ｆが５０Ｈｚの場合の時のリアクタンス（静
電容量の抵抗分）Ｒは計算式（１）でもとめることがで
き、
Ｒ＝１／２πｆＣ――――――――――（１）
配線長３ｍの時のリアクタンスは５．３ＭΩ、４ｍの時
のリアクタンスは４．０ＭΩになり、等価回路を用いて
説明すると図７が配線長３ｍの場合の等価回路、図８が
配線長４ｍの場合の等価回路で表すことができる。
【０００６】ネオン管回路に加わる電圧ＶＮＥは抵抗
Ｒ’と配線の持つ静電容量のリアクタンスＲとの分圧よ
り表され、この電圧ＶＮＥがネオン管回路の放電開始電
圧の５０Ｖ〜５５Ｖより高くなるとネオン管が発光す
る。なお、等価回路において抵抗Ｒ’（１１００Ω）は
抵抗１４、１４（２．２ＭΩ）の並列抵抗値を示す。
【０００７】配線長が３ｍの場合のネオン管回路に加わ
る電圧ＶＮＥがネオン管回路の電圧数式（１）で求める
ことができる。
【０００８】
【数式１】
ネオン管回路に加わる電圧ＶＮＥは４０．６４Ｖとな
る。
【０００９】一方、配線長が４ｍの場合のネオン管回路
に加わる電圧ＶＮＥは数式（２）で求めることができ
る。
【００１０】
【数式２】
ネオン管回路に加わる電圧ＶＮＥは５３．０４Ｖとな
る。なお、数式（１）及び数式（２）において、Ｚは等
価回路全体のインピーダンスを表す。
【００１１】ネオン管１１の放電開始電圧が５０〜５５
Ｖであり、配線長が３ｍの場合はネオン管回路１３に加
わる電圧ＶＮＥはネオン管放電開始電圧５０Ｖより低い
ためにネオン管１１は発光することはないが、配線長が
４ｍの場合はネオン管回路１３に加わる電圧ＶＮＥはネ
オン管放電開始電圧５０Ｖより高くなるためにネオン管
１１は発光してしまう。
【００１２】上述のように、電源電圧が２００Ｖの場合
には、配線長を３ｍ以上長くすることはできなかった。
【００１３】なお、電圧ＶＮＥを求める上述の数式にお
いて、電源電圧が１００Ｖの場合は電源電圧が２００Ｖ
の場合に比べ、電圧が０．５倍になるので、誤点灯しな
い配線長は約２倍になる。
【００１４】本発明は上記問題点を解消し、３路スイッ
チがＯＮしているときに３路スイッチの位置を表示する
表示灯が誤発光することがないようにし、ユーザーがト
ラブルと誤認するような状態を回避することができる表
示灯付き３路スイッチを提供することをその課題とす
る。
【００１５】
【課題を解決するための手段】前記課題を解決するた
め、本発明に係る表示灯付き３路スイッチは、３路スイ
ッチの切換端子間にネオン管及びネオン管用抵抗を直列
に接続したネオン管の点灯回路を設け、スイッチのＯＦ
Ｆ時には上記ネオン管が発光し、スイッチのＯＮ時には
上記ネオン管が消灯する表示灯付き３路スイッチにおい
て、上記点灯回路に双方向定電圧ダイオードを直列に接
続してネオン管回路を形成したことを特徴とする。
【００１６】
【発明の実施の形態】図１は、本発明に係る表示灯付き
３路スイッチ（以下、３路スイッチという）１を適用し
た照明回路を示し、３路スイッチ１、１がＯＮ状態（両
方の３路スイッチ１の共通端子１ａ、１ａが共に一方の
切換端子１ｂ、１ｂ若しくは他方の切換端子１ｃ、１ｃ
に接続されている）で３路スイッチ１、１が通電し照明
器具Ｌが点灯している状態を示している。
【００１７】ところで、上記３路スイッチ１のネオン管
２とネオン管用抵抗３とにはツェナー電圧が１００Ｖの
双方向定電圧ダイオード４が直列に接続されてネオン管
回路５を形成し、ネオン管回路５には並列に抵抗６
（２．２ＭΩ）が接続されている。
【００１８】３路スイッチ１がＯＮの場合の、漏れ電流
ｂによるネオン管回路に加わる電圧ＶＮＥは以下の通り
である。
【００１９】配線（Ｆケーブル）の静電容量（Ｃ１＋Ｃ
２）は、０．０００２μＦ／ｍで、電源周波数５０Ｈｚ
の場合は、配線長１５ｍの時のリアクタンス（静電容量
の抵抗分）Ｒは１．０６ＭΩになるので、上記ネオン管
回路５の等価回路は、図２に示すように表すことがで
き、配線長が１５ｍの場合のネオン管回路５に加わる電
圧ＶＮＥは数式（３）で求めることができる。なお、等
価回路において抵抗Ｒ’（１１００Ω）は抵抗６、６
（２．２ＭΩ）の並列抵抗値を示す。
【００２０】
【数式３】
ネオン管回路５に加わる電圧ＶＮＥは４４Ｖとなり、ネ
オン管放電開始電圧５０Ｖより低いために配線長が１５
ｍになっても漏れ電流でネオン管１が発光することはな
い。
【００２１】上述のように、ネオン管２とネオン管用抵
抗３とツェナー電圧が１００Ｖの双方向定電圧ダイオー
ド４とを直列に接続してネオン管回路５を形成すること
により、電源電圧が２００Ｖであっても、ネオン管回路
５の電圧を１００Ｖにクリッピングすることができ、従
来技術で説明したように双方向定電圧ダイオードがない
場合には配線長が４ｍでネオン管２が発光するのに比
べ、配線長が１５ｍであってもネオン管２が発光するこ
とはない。
【００２２】そして、図３に示すように、３路スイッチ
１がＯＦＦ状態（一方の３路スイッチ１の共通端子１ａ
が切換端子１ｂに接続され、他方の３路スイッチ１の共
通端子１ａが切換端子１ｃに接触）の場合は、両方の３
路スイッチは非通電状態になり負荷である照明Ｌは消灯
するが、照明Ｌを通して微弱のネオン管発光電流ａ（約
０．１ｍＡ）が矢印のように流れるためにネオン管２が
発光し、３路スイッチ１の位置を知らせる位置表示灯と
しての機能を発揮することができる。
【００２３】上述のように、ネオン管の点灯回路に双方
向定電圧ダイオードを直列に接続してネオン管回路を形
成することにより、特に２００Ｖの電源電圧で照明の点
灯・消灯を制御する際に配線長が４ｍという長さであっ
てもネオン管が誤点灯する問題があり実用上において不
具合があったが、配線長を１５ｍにしてもネオン管が誤
点灯することがなくなり、実用性のある表示灯付き３路
スイッチを実現することができる。
【００２４】
【発明の効果】本発明によれば、ネオン管とネオン管用
抵抗とを直列に接続したネオン管の点灯回路に双方向定
電圧ダイオードを直列に接続してネオン管回路を形成す
ることにより、ネオン管回路の電圧を双方向定電圧ダイ
オードのツェナー電圧にクリッピングすることができ、
配線長が長くなっても３路スイッチがＯＮでありながら
配線の静電容量で３路スイッチの設置場所を明示するた
めのネオン管が誤発光する不具合を改善することがで
き、使用者がトラブルと誤認するような状態を回避する
ことができる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a three-way switch with an indicator light, and more particularly to a three-way switch with an indicator light for preventing the indicator light from erroneously emitting light. 2. Description of the Related Art Conventionally, when lighting is turned on / off by three-way switches arranged at two places, a three-way switch with an indicator light for specifying the installation location of the three-way switch has been proposed and put into practical use. Has been offered to. A neon tube is used for this indicator, and the neon tube emits light when the light is turned off so that the location of the three-way switch can be easily recognized even at night, and the neon tube is turned off when the light is turned on. It was made. As shown in FIG. 4, a three-way switch has a power supply P and a load L connected between a common terminal 10a via a wiring 20, and a switching terminal 10b, a switching terminal 10b.
c and 10c are connected by a wiring 21 respectively. Then, a neon tube circuit 13 in which a neon tube 11 and a neon tube resistor 12 are connected in series is provided between the switching terminals 10b and 10c, and the common terminals 10a and 10a of both three-way switches 10 are connected as shown in FIG. Both switching terminals 10b, 1
0b or together with the other switching terminals 10c, 10c
c (hereinafter, this state is determined by the three-way switch
N), the three-way switches 10 and 10 are energized, the illumination L as a load is turned on, and the neon tube circuit 13 is turned on.
Is turned off, the neon tube 11 is turned off, and as shown in FIG. 4, one of the three-way switches is inverted when the three-way switch is ON, and the common terminals 10a of both the three-way switches 10 are respectively turned on. If the three-way switch is connected to different switching terminals 10b and 10c (hereinafter, this state will be referred to as an OF
F), the three-way switches 10 and 10 are de-energized, and the load L is turned off. However, the weak neon tube light-emitting current a (about 0.
1 mA) flows through the neon tube circuit 13 so that the neon tube 1
1 emits light, and functions as a position indicator light for indicating the position of the three-way switch 10. In addition,
Since the impedance of the neon tube circuit 13 is considerably larger than that of the illumination L, the illumination is not turned on. [0004] However, as shown in FIG. 5, the electric wires 20, 21 that are wired have a capacitance C between the electric wires and between the electric wires 20, 21 and the ground G.
1 and C2, and the capacitances C1 and C2 of the wiring
Leakage current b flows through the circuit, and when the leakage current b increases, 3
There was a problem that the neon tube 11 erroneously emitted light even though the road switch 10 was in the ON state. for that reason,
As shown in FIG. 6, a resistor 14 is connected in parallel with the neon tube circuit 13.
(2.2 MΩ) was added to prevent the voltage of the neon tube circuit 13 from increasing due to the capacitance of the wiring. Since the capacitance C (C1 + C2) of the wirings (F cables) 20 and 21 is 0.0002 μF / m, the capacitance C when the wiring length is 3 m is 0.0006 μF and the static capacitance when the wiring length is 4 m. The capacitance C becomes 0.0008 μF,
The reactance (resistance of the capacitance) R when the power supply frequency f is 50 Hz can be obtained from the calculation formula (1), and R = 1 / 2πfC -------------- (1) The reactance when the wiring length is 3 m is 5.3 MΩ, and the reactance when the wiring length is 4 m is 4.0 MΩ. To explain using an equivalent circuit, FIG. 7 shows an equivalent circuit when the wiring length is 3 m, and FIG. It can be represented by an equivalent circuit in the case. [0006] The voltage V NE applied to the neon tube circuit is represented by the voltage division of the resistance R 'and the reactance R of the capacitance of the wiring, and this voltage V NE is calculated from the discharge start voltage of the neon tube circuit of 50 V to 55 V. As the height increases, the neon tube emits light. In the equivalent circuit, the resistance R ′ (1100Ω) indicates a parallel resistance value of the resistances 14 and 14 (2.2 MΩ). [0007] The voltage V NE applied to the neon tube circuit when the wiring length is 3 m can be obtained by the voltage equation (1) of the neon tube circuit. [0008] The voltage V NE applied to the neon tube circuit is 40.64V. On the other hand, the voltage V NE applied to the neon tube circuit when the wiring length is 4 m can be obtained by equation (2). [Equation 2] The voltage V NE applied to the neon tube circuit is 53.04V. In Equations (1) and (2), Z represents the impedance of the entire equivalent circuit. The discharge starting voltage of the neon tube 11 is 50 to 55.
When the wiring length is 3 m, the neon tube 11 does not emit light because the voltage V NE applied to the neon tube circuit 13 is lower than the neon tube discharge starting voltage 50 V, but when the wiring length is 4 m, the neon Since the voltage V NE applied to the tube circuit 13 is higher than the neon tube discharge start voltage 50 V, the neon tube 11 emits light. As described above, when the power supply voltage is 200 V, the wiring length cannot be increased by 3 m or more. In the above equation for calculating the voltage V NE , when the power supply voltage is 100 V, the power supply voltage is 200 V
Since the voltage is 0.5 times as large as in the case of the above, the wiring length that does not cause false lighting is approximately doubled. The present invention solves the above-mentioned problem and prevents the display lamp for displaying the position of the three-way switch from erroneously emitting light when the three-way switch is turned on, so that the user can mistakenly identify a trouble. It is an object of the present invention to provide a three-way switch with an indicator light capable of avoiding a complicated state. In order to solve the above problems, a three-way switch with an indicator light according to the present invention has a neon tube and a neon tube resistor connected in series between switching terminals of the three-way switch. A lighting circuit for the neon tube is provided and the switch is turned off.
In a three-way switch with an indicator light, in which the neon tube emits light at the time of F and the neon tube is turned off when the switch is turned on, a neon tube circuit is formed by connecting a bidirectional constant voltage diode in series to the lighting circuit. Features. FIG. 1 shows an illumination circuit to which a three-way switch 1 with an indicator light (hereinafter, referred to as a three-way switch) 1 according to the present invention is applied. (The common terminals 1a, 1a of both three-way switches 1 are either one of the switching terminals 1b, 1b or the other of the switching terminals 1c, 1c.
), The three-way switches 1 and 1 are energized and the lighting fixture L is turned on. A neon tube circuit 5 is formed by connecting a bidirectional constant voltage diode 4 having a Zener voltage of 100 V in series to the neon tube 2 and the neon tube resistor 3 of the three-way switch 1 to form a neon tube circuit 5. 5 has a resistor 6 in parallel
(2.2 MΩ). When the three-way switch 1 is ON, the voltage V NE applied to the neon tube circuit due to the leakage current b is as follows. The capacitance (C1 + C) of the wiring (F cable)
2) is 0.0002 μF / m, power frequency 50 Hz
In the case of (1), the reactance (resistance of the capacitance) R when the wiring length is 15 m is 1.06 MΩ, so that the equivalent circuit of the neon tube circuit 5 can be represented as shown in FIG. The voltage V NE applied to the neon tube circuit 5 when the length is 15 m can be obtained by Expression (3). In the equivalent circuit, the resistance R ′ (1100Ω) is equivalent to the resistances 6 and 6
(2.2 MΩ). [Equation 3] The voltage V NE applied to the neon tube circuit 5 is 44 V, which is lower than the neon tube discharge starting voltage 50 V, so that the wiring length is 15
Even at m, the neon tube 1 does not emit light due to the leakage current. As described above, the neon tube circuit 5, the neon tube circuit 5, is formed by connecting the neon tube 2, the neon tube resistor 3, and the bidirectional constant voltage diode 4 having a zener voltage of 100V in series. Even so, the voltage of the neon tube circuit 5 can be clipped to 100 V, and when there is no bidirectional constant voltage diode as described in the related art, the wire length is 4 m and the neon tube 2 emits light compared to the case where the neon tube 2 emits light. Even when the wiring length is 15 m, the neon tube 2 does not emit light. Then, as shown in FIG. 3, the three-way switch 1 is turned off (the common terminal 1a of one of the three-way switches 1).
Are connected to the switching terminal 1b and the common terminal 1a of the other three-way switch 1 contacts the switching terminal 1c).
The road switch is de-energized and the load L, which is a load, is turned off. However, a weak neon tube light-emitting current a (about 0.1 mA) flows through the light L as shown by the arrow, so that the neon tube 2 emits light. The function as a position indicator light for notifying the position of the road switch 1 can be exhibited. As described above, by forming a neon tube circuit by connecting a bidirectional constant voltage diode in series to the lighting circuit of the neon tube, particularly when controlling the turning on / off of the illumination with a power supply voltage of 200V. Even if the wiring length is as long as 4 m, there is a problem in that the neon tube is erroneously turned on and there is a problem in practical use. A three-way switch with an indicator light can be realized. According to the present invention, a neon tube circuit is formed by connecting a bidirectional constant voltage diode in series to a lighting circuit of a neon tube in which a neon tube and a neon tube resistor are connected in series. By this, the voltage of the neon tube circuit can be clipped to the Zener voltage of the bidirectional constant voltage diode,
Even if the wiring length is long, it is possible to improve the problem that the neon tube for illuminating the installation location of the three-way switch erroneously emits light due to the capacitance of the wiring while the three-way switch is ON, and the user has trouble. Can be avoided.
【図面の簡単な説明】
【図１】本発明に係る３路スイッチを適用した照明回路
の配線図
【図２】上記３路スイッチの等価回路図
【図３】上記照明回路において３路スイッチがＯＦＦの
状態の配線図
【図４】従来の３路スイッチを適用した照明回路におい
て３路スイッチがＯＦＦの状態を示す配線図
【図５】従来の３路スイッチを適用した照明回路におい
て３路スイッチがＯＮの状態を示す配線図
【図６】従来の３路スイッチの他の例を適用した照明回
路の配線図
【図７】上記従来の３路スイッチの等価回路図
【図８】上記従来の３路スイッチの等価回路図
【符号の説明】
１ 表示灯付き３路スイッチ
２ ネオン管
３ ネオン管用抵抗
４ 双方向定電圧ダイオード
５ ネオン管回路
１ａ 共通端子
１ｂ、１ｃ 切換端子BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a wiring diagram of a lighting circuit to which a three-way switch according to the present invention is applied. FIG. 2 is an equivalent circuit diagram of the three-way switch. FIG. FIG. 4 is a wiring diagram showing a state where the three-way switch is OFF in the lighting circuit to which the conventional three-way switch is applied. FIG. 5 is a wiring diagram showing a three-way switch in the lighting circuit to which the conventional three-way switch is applied. FIG. 6 is a wiring diagram of an illumination circuit to which another example of the conventional three-way switch is applied. FIG. 7 is an equivalent circuit diagram of the conventional three-way switch. Equivalent circuit diagram of three-way switch [Description of symbols] 1 Three-way switch with indicator light 2 Neon tube 3 Neon tube resistor 4 Bidirectional constant voltage diode 5 Neon tube circuit 1a Common terminal 1b, 1c Switching terminal
Claims (1)
びネオン管用抵抗を直列に接続したネオン管の点灯回路
を設け、スイッチのＯＦＦ時には上記ネオン管が発光
し、スイッチのＯＮ時には上記ネオン管が消灯する表示
灯付き３路スイッチにおいて、 上記点灯回路に双方向定電圧ダイオードを直列に接続し
てネオン管回路を形成したことを特徴とする表示灯付き
３路スイッチ。Claims: 1. A neon tube lighting circuit in which a neon tube and a neon tube resistor are connected in series between switching terminals of a three-way switch. When the switch is turned off, the neon tube emits light. A three-way switch with an indicator light, wherein the neon tube is turned off when the lamp is turned on, wherein a two-way constant voltage diode is connected in series to the lighting circuit to form a neon tube circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002081010A JP2003281957A (en) | 2002-03-22 | 2002-03-22 | Three way switch with indicator light |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002081010A JP2003281957A (en) | 2002-03-22 | 2002-03-22 | Three way switch with indicator light |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003281957A true JP2003281957A (en) | 2003-10-03 |
Family
ID=29229809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002081010A Pending JP2003281957A (en) | 2002-03-22 | 2002-03-22 | Three way switch with indicator light |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003281957A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100885282B1 (en) | 2007-07-04 | 2009-02-23 | 서울통신기술 주식회사 | Power controller having three-way switch and control method thereof |
| WO2015151384A1 (en) * | 2014-03-31 | 2015-10-08 | パナソニックＩｐマネジメント株式会社 | Switch device and load control system |
| WO2015151378A1 (en) * | 2014-03-31 | 2015-10-08 | パナソニックＩｐマネジメント株式会社 | Indicator-equipped switch |
-
2002
- 2002-03-22 JP JP2002081010A patent/JP2003281957A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100885282B1 (en) | 2007-07-04 | 2009-02-23 | 서울통신기술 주식회사 | Power controller having three-way switch and control method thereof |
| WO2015151384A1 (en) * | 2014-03-31 | 2015-10-08 | パナソニックＩｐマネジメント株式会社 | Switch device and load control system |
| WO2015151378A1 (en) * | 2014-03-31 | 2015-10-08 | パナソニックＩｐマネジメント株式会社 | Indicator-equipped switch |
| JP2015195081A (en) * | 2014-03-31 | 2015-11-05 | パナソニックＩｐマネジメント株式会社 | switch device and load control system |
| JP2015195118A (en) * | 2014-03-31 | 2015-11-05 | パナソニックＩｐマネジメント株式会社 | Switch with pilot lamp |
| CN106133867A (en) * | 2014-03-31 | 2016-11-16 | 松下知识产权经营株式会社 | Switch equipped with display lamp |
| TWI595525B (en) * | 2014-03-31 | 2017-08-11 | 松下知識產權經營股份有限公司 | Switch with display lamp |
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