JPH0228976A - Dichroic light emitting indicator lamp - Google Patents
Dichroic light emitting indicator lampInfo
- Publication number
- JPH0228976A JPH0228976A JP63179856A JP17985688A JPH0228976A JP H0228976 A JPH0228976 A JP H0228976A JP 63179856 A JP63179856 A JP 63179856A JP 17985688 A JP17985688 A JP 17985688A JP H0228976 A JPH0228976 A JP H0228976A
- Authority
- JP
- Japan
- Prior art keywords
- light emitting
- emitting diode
- diode
- resistance
- switch
- 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
- Audible And Visible Signals (AREA)
- Led Devices (AREA)
Abstract
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明は、制御盤などに用いる二色発光型表示灯に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a two-color indicator lamp used in a control panel or the like.
「従来の技術および発明が解決しようとする課題」従来
の二色発光型表示灯として第５図に示すものがある。第
５図においてスイッチｓｗ１が閉じると、スイッチＳＷ
、、赤色発光ダイオードＬＥＤＲ１抵抗Ｒ２が導通して
、赤色発光ダイオードＬＥＤＲが点灯する。次にスイッ
チＳＷ１が開状態でスイッチＳＷ２が閉状態になると、
抵抗Ｒ１、緑色発光ダイオードＬＥＤＧ、スイッチＳＷ
２が導通して、緑色発光ダイオードＬＥＤＧが点灯する
。しかし、この回路においてスイッチ５ＷＳＷ２が何か
のトラブルで共に閉状態になり線間短絡が起る可能性が
ある。また、２個の表示灯の切換えに２個のスイッチが
必要である。``Prior Art and Problems to be Solved by the Invention'' A conventional two-color indicator lamp is shown in FIG. In FIG. 5, when the switch sw1 is closed, the switch SW1 is closed.
,, the red light emitting diode LEDR1 becomes conductive, and the red light emitting diode LEDR lights up. Next, when switch SW1 is open and switch SW2 is closed,
Resistor R1, green light emitting diode LEDG, switch SW
2 becomes conductive, and the green light emitting diode LEDG lights up. However, in this circuit, the switch 5WSW2 may become closed due to some trouble, causing a short circuit between the lines. Furthermore, two switches are required to switch between the two indicator lights.
「課題を解決するための手段および作用」そこで、本発
明は、上記の事情に鑑み、二色型発光表示灯において、
線間短絡を防止し必要接点の数をできるだけ少なくさせ
るべく、線間にダイオードと特定の色を発する発光ダイ
オードと抵抗とを直列に接続し、前記ダイオードと特定
の色を発する発光ダイオードに対し、直列に接続した抵
抗と他の特定の色を発する発光ダイオードとを並列に接
続し、さらに、前記抵抗に対しスイッチを並列に接続し
た二色発光型表示灯であり、ダイオードの特性を利用し
電位差を回路に生じさせ、スインチ１個により表示灯の
切換えを可能とする。"Means and Effects for Solving the Problems" Therefore, in view of the above circumstances, the present invention provides a two-color luminescent indicator lamp that includes:
In order to prevent short circuits between lines and minimize the number of required contacts, a diode, a light emitting diode that emits a specific color, and a resistor are connected in series between the lines, and the diode and the light emitting diode that emits a specific color are connected in series. This is a two-color light-emitting indicator lamp, in which a resistor connected in series and a light emitting diode that emits another specific color are connected in parallel, and a switch is connected in parallel to the resistor. is generated in the circuit, making it possible to switch the indicator light with a single switch.
「実施例」
第１図において、線間にツェナーダイオードＤ赤色発光
ダイオードＬＥＤＲ１抵抗Ｒ２を直列に接続する。前記
ツェナーダイオードＤＩ、赤色発光ダイオードＬＥＤＲ
に対し、直列に接続した抵抗ＲＩと緑色発光ダイオード
ＬＥＤＧとを並列に接続する。抵抗Ｒ３に発生する端子
間電圧よりツェナーダイオードＤ１の設定電圧を低い状
態になるように設定する。なお、緑色発光ダイオードＬ
ＥＤＧと赤色発光ダイオードＬＥＤＲの電圧は同一であ
る。さらに、前記抵抗Ｒ１に対しスイッチＳ Ｗ ＋を
閉の時、抵抗Ｒ３をバイパスできるように並列に接続す
る。Embodiment In FIG. 1, a Zener diode D, a red light emitting diode LEDR1, and a resistor R2 are connected in series between the lines. Zener diode DI, red light emitting diode LEDR
On the other hand, a resistor RI connected in series and a green light emitting diode LEDG are connected in parallel. The set voltage of the Zener diode D1 is set to be lower than the voltage between the terminals of the resistor R3. In addition, the green light emitting diode L
The voltages of EDG and red light emitting diode LEDR are the same. Further, a switch S W + is connected in parallel to the resistor R1 so that the resistor R3 can be bypassed when the resistor R1 is closed.
スイッチＳ Ｗ ＋が開の時、電路は抵抗Ｒ１、緑色発
光ダイオードＬＥＤＧ、抵抗Ｒ２と、ツェナーダイオー
ドＤＩ、赤色発光ダイオードＬＥＤＲ１抵抗Ｒ２との回
路が存在するが、抵抗Ｒ，の端子間電圧がツェナーダイ
オードＤ１の電圧より高くなるように設定しであるため
、赤色発光ダイオードＬＥＤＲのみ発光する。When the switch S W Since the voltage is set to be higher than the voltage of the diode D1, only the red light emitting diode LEDR emits light.
スイッチＳＷ、が閉の時、電路としてスイッチＳＷＩ、
緑色発光ダイオードＬＥＤＧ、抵抗Ｒ２が構成され、ツ
ェナーダイオードＤＩ、赤色発光ダイオード、抵抗Ｒ２
より電圧が高（なり、緑色発光ダイオードＬＥＤＧが点
灯する。When switch SW is closed, switch SWI is used as an electric circuit.
A green light emitting diode LEDG and a resistor R2 are configured, and a Zener diode DI, a red light emitting diode and a resistor R2 are configured.
The voltage becomes higher (and the green light emitting diode LEDG lights up).
上記の実施例ではダイオードとしてツェナーダイオード
Ｄ、を用いた例について述べたが、このツェナーダイオ
ードＤ、の替りに発光ダイオードＬＥＤＯ数を増やして
同条件に設定することも可能である。In the above embodiment, a Zener diode D is used as the diode, but instead of the Zener diode D, it is also possible to increase the number of light emitting diodes LEDO and set the same conditions.
その回路図を第２図に示す。発光ダイオードＬＥＤ５、
ＬＥＤ２、ＬＥＤｌ、ＬＥＤ４、ＬＥＤ５の５個を直列
に接続してツェナーダイオードＤ１と置き替え、他は第
１図のものと全く同じ構成である。The circuit diagram is shown in FIG. Light emitting diode LED5,
Five LEDs, LED2, LEDl, LED4, and LED5, are connected in series and replaced with the Zener diode D1, and the other configuration is exactly the same as that of FIG. 1.
ツェナーダイオードＤ１は、例えば第３図に示すような
電流−電圧特性で、設定電圧を１０Ｖに設定しておくと
、１０Ｖになると電流が流れはじめる。The Zener diode D1 has a current-voltage characteristic as shown in FIG. 3, for example, and if the set voltage is set to 10V, current starts to flow when the voltage reaches 10V.
発光ダイオードＬＥＤ＋ 、ＬＥＤｚ 、ＬＥＤ：ｌ、
ＬＥＤ４、ＬＥＤ、は、第４図に示すような電流−電圧
特性で、１素子当たり約２Ｖの電圧降下特性があって、
５個を直列に接続すると、電圧降下は１０Ｖとなり、ツ
ェナーダイオードＤ１と同じになる。Light emitting diode LED+, LEDz, LED:l,
LED4, LED, has a current-voltage characteristic as shown in Fig. 4, and has a voltage drop characteristic of about 2V per element.
If five are connected in series, the voltage drop will be 10V, which is the same as the Zener diode D1.
この第２図の回路は、第１図の回路と全く同様に作動す
る。The circuit of FIG. 2 operates in exactly the same way as the circuit of FIG.
「発明の効果Ｊ
本発明は、上述のように、線間にダイオードと特定の色
を発する発光ダイオードと抵抗とを直列に接続し、前記
ダイオードと特定の色を発する発光ダイオードに対し直
列に接続した抵抗と他の特定の色を発する発光ダイオー
ドとを並列に接続し、さらに、前記抵抗に対しスイッチ
を並列に接続した二色発光型表示灯であるので、誤って
２個のスイッチを同時に閉として線間短絡させるような
短絡事項は全くなくなる。その上、１個のスイッチで２
個の表示灯の点灯あるいは消灯をさせることができ、必
要とされる接点の数も少なくすることができる。"Effect of the Invention J As described above, the present invention connects a diode, a light emitting diode that emits a specific color, and a resistor in series between the lines, and connects the diode and the light emitting diode that emits a specific color in series. This is a two-color indicator light in which a resistor is connected in parallel with a light emitting diode that emits another specific color, and a switch is connected in parallel with the resistor, so it is possible to accidentally close two switches at the same time. As a result, short circuits such as short circuits between lines are completely eliminated.Furthermore, one switch can
It is possible to turn on or off individual indicator lights, and the number of required contacts can be reduced.
第１図は本発明の具体的な一実施例の二色発光型表示灯
の回路図、第２図は他の実施例の二色発光型表示灯の回
路図、第３図はツェナーダイオードの電流−電圧特性図
、第４図は発光ダイオードの電流−電圧特性図、第５図
は従来の二色発光型表示灯の回路である。
Ｄ、・・・ツェナーダイ、オード
ＬＥＤＲ・・・赤色発光ダイオード
Ｒ２・・・抵 抗
Ｒ１・・・抵 抗
ＬＥＤＧ・・・緑色発光ダイオードFig. 1 is a circuit diagram of a two-color indicator lamp according to a specific embodiment of the present invention, Fig. 2 is a circuit diagram of a two-color indicator lamp of another embodiment, and Fig. 3 is a circuit diagram of a two-color indicator lamp of another embodiment. FIG. 4 is a current-voltage characteristic diagram of a light emitting diode, and FIG. 5 is a circuit of a conventional two-color indicator lamp. D... Zener die, LEDR... Red light emitting diode R2... Resistor R1... Resistor LEDG... Green light emitting diode
Claims (1)
ードと抵抗とを直列に接続し、前記ダイオードと特定の
色を発する発光ダイオードに対し、直列に接続した抵抗
と他の特定の色を発する発光ダイオードとを並列に接続
し、さらに、前記抵抗に対しスイッチを並列に接続した
二色発光型表示灯(1) Connect a diode, a light emitting diode that emits a specific color, and a resistor in series between the lines, and connect the resistor in series with the light emitting diode that emits a specific color and emit another specific color. A two-color light-emitting indicator light with a light emitting diode connected in parallel and a switch connected in parallel with the resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63179856A JPH0228976A (en) | 1988-07-18 | 1988-07-18 | Dichroic light emitting indicator lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63179856A JPH0228976A (en) | 1988-07-18 | 1988-07-18 | Dichroic light emitting indicator lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0228976A true JPH0228976A (en) | 1990-01-31 |
Family
ID=16073112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63179856A Pending JPH0228976A (en) | 1988-07-18 | 1988-07-18 | Dichroic light emitting indicator lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0228976A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04183423A (en) * | 1990-11-16 | 1992-06-30 | Sekisui Chem Co Ltd | Shower device |
| JPH04317833A (en) * | 1991-04-17 | 1992-11-09 | Kojima Press Co Ltd | Vehicle indicator lamp control circuit |
| JPH05264028A (en) * | 1991-03-27 | 1993-10-12 | Rinnai Corp | Control device for hot water feeder |
| US5491349A (en) * | 1991-06-13 | 1996-02-13 | Kabushiki Kaisha Toshiba | Multi-color light emitting device |
| JP2009071227A (en) * | 2007-09-18 | 2009-04-02 | Panasonic Corp | LED module |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5137880B2 (en) * | 1972-03-06 | 1976-10-18 |
-
1988
- 1988-07-18 JP JP63179856A patent/JPH0228976A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5137880B2 (en) * | 1972-03-06 | 1976-10-18 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04183423A (en) * | 1990-11-16 | 1992-06-30 | Sekisui Chem Co Ltd | Shower device |
| JPH05264028A (en) * | 1991-03-27 | 1993-10-12 | Rinnai Corp | Control device for hot water feeder |
| JPH04317833A (en) * | 1991-04-17 | 1992-11-09 | Kojima Press Co Ltd | Vehicle indicator lamp control circuit |
| US5491349A (en) * | 1991-06-13 | 1996-02-13 | Kabushiki Kaisha Toshiba | Multi-color light emitting device |
| JP2009071227A (en) * | 2007-09-18 | 2009-04-02 | Panasonic Corp | LED module |
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