JPS6331451Y2 - - Google Patents
Info
- Publication number
- JPS6331451Y2 JPS6331451Y2 JP1979160887U JP16088779U JPS6331451Y2 JP S6331451 Y2 JPS6331451 Y2 JP S6331451Y2 JP 1979160887 U JP1979160887 U JP 1979160887U JP 16088779 U JP16088779 U JP 16088779U JP S6331451 Y2 JPS6331451 Y2 JP S6331451Y2
- Authority
- JP
- Japan
- Prior art keywords
- light emitting
- circuit
- resistor
- emitting element
- 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.)
- Expired
Links
- 230000007423 decrease Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Switch Cases, Indication, And Locking (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Audible And Visible Signals (AREA)
- Keying Circuit Devices (AREA)
Description
【考案の詳細な説明】
本考案は、発光ダイオード、パイロツトランプ
等の発光素子を用いた表示回路に関し、その目的
は、抵抗及びスイツチの直並列回路を用いること
により、複数の発光素子を単に点滅させるのでは
なくスイツチの開閉に伴つて斯る複数の発光素子
の発光輝度を変化させ、美しい表示機能を達成で
きるようにした発光表示回路を提供することにあ
る。[Detailed description of the invention] The present invention relates to a display circuit using light-emitting elements such as light-emitting diodes and pilot lamps.The purpose of the invention is to simply blink multiple light-emitting elements by using a series-parallel circuit of resistors and switches. It is an object of the present invention to provide a light emitting display circuit that can achieve a beautiful display function by changing the luminance of light emitting elements of a plurality of light emitting elements as a switch is opened and closed, instead of changing the brightness of the light emitting elements.
以下本考案の一実施例につき第１図に基づいて
説明する。 An embodiment of the present invention will be explained below based on FIG. 1.
図においては、抵抗R1と発光素子D1の直列接
続された回路を単位回路として以下同一の構成を
もつR2−D2，R3−D3，……Ro−Doの各単位回路
が全て並列接続されて発光回路を構成している。
そして前記各単位回路中の各発光素子への流入電
流を大小切換操作するための電流切換スイツチ回
路として各単位回路中の各抵抗の両端間に短絡用
のスイツチS1，S2，……Soが夫々設けられてお
り、更に当該発光回路とその駆動用電源Ｅとの間
に直列に共通抵抗RCが挿入されている。 In the figure, a circuit in which a resistor R 1 and a light emitting element D 1 are connected in series is used as a unit circuit, and each unit of R 2 −D 2 , R 3 −D 3 , ... R o −D o having the same configuration is shown below. All the circuits are connected in parallel to form a light emitting circuit.
Short-circuiting switches S 1 , S 2 , . . . S are connected between both ends of each resistor in each unit circuit as a current changeover switch circuit for switching the magnitude of the current flowing into each light emitting element in each unit circuit. o , and a common resistor R C is inserted in series between the light emitting circuit and its driving power source E.
以上の各部により、本考案に係る発光表示回路
が構成されている。次に本回路の動作について説
明する。 The above-mentioned parts constitute a light emitting display circuit according to the present invention. Next, the operation of this circuit will be explained.
まず、スイツチS1，S2，……Soの全てがオフの
場合は、各単位回路のインピーダンスは全て等し
いから夫々に等しい電流が流れ、従つて発光素子
D1，D2，……Doは皆同輝度で発光している。 First, when all switches S 1 , S 2 , ...S o are off, the impedance of each unit circuit is equal, so an equal current flows in each unit, and therefore the light emitting element
D 1 , D 2 , ...D o all emit light with the same brightness.
ここで例えばスイツチS1をオンにすると抵抗
R1は短絡されることになり、発光素子D1への流
入電流は大きくなつて該発光素子D1の発光輝度
が増す。この時、先のスイツチS1のオンにより発
光回路全体のインピーダンスがわずかに低くなる
から共通抵抗RCへの流入電流が増し、その両端
間電圧降下もわずかに大となる。故に、R1−D1
以外の各単位回路に印加される電圧は全体的に低
くなり、D1以外の各発光素子の発光輝度はスイ
ツチS1，S2，……Soが全てオフの場合に比して低
下することになる。 For example, when switch S 1 is turned on, the resistance
R1 will be short-circuited, and the current flowing into the light emitting element D1 will increase, increasing the luminance of the light emitting element D1 . At this time, since the impedance of the entire light emitting circuit is slightly lowered by turning on the switch S1 , the current flowing into the common resistor R C increases, and the voltage drop across it also increases slightly. Therefore, R 1 −D 1
The voltage applied to each unit circuit other than D1 becomes lower overall, and the luminance of each light emitting element other than D1 decreases compared to when switches S1 , S2 ,... S0 are all off. It turns out.
すなわち上記説明から判るように、スイツチ
S1，S2，……Soのうち任意のひとつをオンする
と、その任意のスイツチに係る単位回路中の発光
素子だけが発光輝度を増し、他の発光素子は以前
よりも発光輝度が低下するのである。 In other words, as you can see from the above explanation, the switch
When any one of S 1 , S 2 , ...S o is turned on, only the light emitting element in the unit circuit related to that arbitrary switch increases the light emission brightness, and the light emission brightness of the other light emitting elements becomes lower than before. That's what I do.
第２図は本考案の他の実施例を示すものであ
る。この例では、抵抗R1と発光素子D1とが切換
スイツチS′1の可動接点と一方の固定接点を介し
て直列に接続された回路をひとつの単位として、
以下同一の構成をもつR2−S′2−D2，R3−S′3−
D3，……Ro−S′o−Doの各回路が全て並列接続さ
れ、電流切換スイツチ回路を含んだ形の発光回路
が構成されている。また、当該発光回路とその駆
動用電源Ｅとの間には直列に共通抵抗RCが挿入
されている。更に、前記切換スイツチS′1，S′2，
…S′oの夫々の他方の固定接点は全て共通接続さ
れており、その共通接続点は抵抗RF1を介して駆
動用電源Ｅに、またダイオードDF及びRF2を介し
て当該発光回路と共通抵抗RCとの接続点に、
夫々接続されている。なお、抵抗RF1の抵抗値は
抵抗R1，R2，……Roより小さいものとする。 FIG. 2 shows another embodiment of the present invention. In this example, one unit is a circuit in which a resistor R 1 and a light emitting element D 1 are connected in series via a movable contact of a changeover switch S' 1 and one fixed contact.
Below, R 2 −S′ 2 −D 2 , R 3 −S′ 3 − with the same configuration
The circuits D 3 , . . . R o −S′ o −D o are all connected in parallel to form a light emitting circuit including a current selection switch circuit. Further, a common resistor R C is inserted in series between the light emitting circuit and its driving power source E. Furthermore, the changeover switches S′ 1 , S′ 2 ,
...The other fixed contacts of S′ o are all connected in common, and the common connection point is connected to the drive power supply E through the resistor R F1 and to the light emitting circuit through the diodes D F and R F2 . At the connection point with the common resistance R C ,
are connected to each other. Note that the resistance value of the resistor R F1 is smaller than the resistors R 1 , R 2 , . . . Ro .
以上の構成において、切換スイツチS′1，S′2，
……S′oの全てが図中下側に投入されている場合
は、各発光素子D1，D2，……Doの全てに等しい
電流が流れるから皆同輝度で発光している。 In the above configuration, the changeover switches S′ 1 , S′ 2 ,
...If all of the S′ o are connected to the lower side of the figure, the same current flows through each of the light emitting elements D 1 , D 2 , ...D o , so they all emit light with the same brightness.
ここで例えば切換スイツチS′1を図中上側に投
入すると、発光素子D1は低抵抗値をもつRF1と直
列に接続されることになつて流入電流が増し、そ
れに伴つて発光輝度も増す。それと同時に、ダイ
オードDF、抵抗RF2を通じて前記増した流入電流
の一部が共通抵抗RCにも流入するから、その両
端間電圧降下は以前より増加し、故にD1以外の
各発光素子への印加電圧は全体的に減少し、それ
らの発光輝度も切換スイツチS′1，S′2，……S′oが
全て下側に投入されている場合に比して低下する
のである。 For example, if the switch S' 1 is turned to the upper side in the figure, the light emitting element D 1 will be connected in series with R F1 , which has a low resistance value, and the inflow current will increase, and the luminance will increase accordingly. . At the same time, a portion of the increased inflow current also flows into the common resistor R C through the diode D F and the resistor R F2 , so the voltage drop across it increases compared to before, and therefore the voltage drop across each of the light emitting elements except D 1 increases. The voltage applied to them decreases overall, and their luminance also decreases compared to when the switches S' 1 , S' 2 , . . . S' o are all turned to the lower side.
従つてこの回路は前記実施例と同様の動作をす
ることになる。 Therefore, this circuit operates in the same way as the previous embodiment.
以上詳細に述べたように、本考案によれば、多
数の発光素子が通常時に皆同輝度で発光してい
て、任意の発光素子に係るスイツチを操作するこ
とにより当該発光素子のみの発光輝度が増加して
他の発光素子の発光輝度が全体的に減少するとい
う美しい表示機能をもつ発光表示回路を実現する
ことができる。しかもその構成は至極簡単であつ
て、部品数も少なくて済み、コスト的にも非常に
有利である。 As described in detail above, according to the present invention, a large number of light emitting elements all emit light at the same brightness under normal conditions, and by operating a switch related to any light emitting element, the light emitting brightness of only that light emitting element can be changed. It is possible to realize a light emitting display circuit having a beautiful display function in which the luminance of light emitting elements increases and the luminance of other light emitting elements decreases as a whole. Furthermore, the structure is extremely simple, requires only a small number of parts, and is very advantageous in terms of cost.
本考案の発光表示回路は、例えば受信機のプリ
セツト選局装置の表示部等に用いて最適なもので
ある。 The light emitting display circuit of the present invention is most suitable for use, for example, in a display section of a preset channel selection device of a receiver.
図面は本考案に係る発光表示回路に関し、第１
図はその一実施例を示す回路構成図、第２図は他
の実施例を示す回路構成図である。
D1，D2，……Do……発光素子、R1，R2……Ro
……抵抗、S1，S2，……So……スイツチ、S′1，
S′2，S′o……切換スイツチ、RC……共通抵抗、
RF1，RF2……抵抗、DF……ダイオード、Ｅ……
駆動用電源。
The drawings relate to the light emitting display circuit according to the present invention.
The figure is a circuit configuration diagram showing one embodiment, and FIG. 2 is a circuit configuration diagram showing another embodiment. D 1 , D 2 , ...D o ... Light emitting element, R 1 , R 2 ... R o
...Resistance, S 1 , S 2 , ...S o ...Switch, S' 1 ,
S′ 2 , S′ o ……changeover switch, R C ……common resistance,
R F1 , R F2 ...Resistor, D F ...Diode, E...
Drive power supply.
Claims (1)
路を複数個並列接続して発光回路とし、該各単位
回路中の各発光素子への流入電流を大小切換操作
するための電流切換スイツチ回路を前記単位回路
毎に設けると共に、当該発光回路とその駆動用電
源との間に直列に共通抵抗を挿入することによ
り、前記電流切換スイツチ回路のスイツチ切換操
作に伴い当該発光回路中の複数個の発光素子の発
光輝度を相異させてスイツチ切換操作の状態を表
示できるように構成したことを特徴とする発光表
示回路。 A plurality of unit circuits in which a light emitting element and a resistor are connected in series are connected in parallel to form a light emitting circuit, and the current changeover switch circuit for switching the magnitude of the current flowing into each light emitting element in each unit circuit is provided as described above. By providing a common resistor for each unit circuit and inserting a common resistor in series between the light emitting circuit and its driving power source, a plurality of light emitting elements in the light emitting circuit can be 1. A light emitting display circuit characterized in that the light emitting display circuit is configured to display the status of a switch switching operation by varying the light emitting brightness of the lights.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979160887U JPS6331451Y2 (en) | 1979-11-20 | 1979-11-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979160887U JPS6331451Y2 (en) | 1979-11-20 | 1979-11-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5678126U JPS5678126U (en) | 1981-06-25 |
| JPS6331451Y2 true JPS6331451Y2 (en) | 1988-08-23 |
Family
ID=29672013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1979160887U Expired JPS6331451Y2 (en) | 1979-11-20 | 1979-11-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6331451Y2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS516884U (en) * | 1974-06-29 | 1976-01-19 |
-
1979
- 1979-11-20 JP JP1979160887U patent/JPS6331451Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5678126U (en) | 1981-06-25 |
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