JPS63293593A - Fluorescent indicator tube driver - Google Patents
Fluorescent indicator tube driverInfo
- Publication number
- JPS63293593A JPS63293593A JP13017787A JP13017787A JPS63293593A JP S63293593 A JPS63293593 A JP S63293593A JP 13017787 A JP13017787 A JP 13017787A JP 13017787 A JP13017787 A JP 13017787A JP S63293593 A JPS63293593 A JP S63293593A
- Authority
- JP
- Japan
- Prior art keywords
- bar
- fluorescent indicator
- displayed
- indicator tube
- display
- 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
- 239000003269 fluorescent indicator Substances 0.000 title 1
- 238000010586 diagram Methods 0.000 description 3
- 125000003798 L-tyrosyl group Chemical group [H]N([H])[C@]([H])(C(=O)[*])C([H])([H])C1=C([H])C([H])=C(O[H])C([H])=C1[H] 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000006059 cover glass Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
Landscapes
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Tires In General (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はアナログ量を表示するバーグラフタイプの蛍光
表示管の駆動装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a driving device for a bar graph type fluorescent display tube that displays analog quantities.
従来、バーグラフタイプの蛍光表示管を駆動する場合、
表示量に相当するバーを１セグメン■・のみ点灯して表
示（ポインタ表示）するか、表示量に相当するバーを含
む下位のバーを全て表示（ゾーン表示）している。Conventionally, when driving a bar graph type fluorescent display tube,
Only one segment of the bar corresponding to the display amount is lit (pointer display), or all lower bars including the bar corresponding to the display amount are displayed (zone display).
しかしながら、ポインタ表示においては、連続的に変化
する量を表示する場合、表示量がつかみにくく、またど
の量においても表示する光量は一定であり、量の多少が
瞬時に判断できないという欠点がある。また、ゾーン表
示においては、表示される各バーの光量（輝度）が一定
であるために、変化する量を表示する場合、ピーク値が
つかみにくいという欠点がある。However, pointer display has the disadvantage that when displaying an amount that changes continuously, it is difficult to grasp the displayed amount, and the amount of displayed light is constant regardless of the amount, so it is not possible to instantly determine whether the amount is large or small. Furthermore, in the zone display, since the amount of light (brightness) of each displayed bar is constant, there is a drawback that it is difficult to grasp the peak value when displaying a varying amount.
さらに、上述した欠点を補うために、表示する量の最上
位のバーを明るく下位に従って暗くするように駆動する
よう上位バーに対し下位バーに点灯時間の変化を持たせ
ている。つまり、デユーティを変化させ、下位バーに従
いデユーティを小さくする。しかし、バーは常にスイッ
チングにより動作されるため、駆動系より出力するスイ
ッチングパルスの問題を解決しなければならない。Furthermore, in order to compensate for the above-mentioned drawbacks, the lighting time of the lower bar is varied with respect to the upper bar so that the bar at the top of the displayed quantity is driven to be brighter and darker as the lower bars go. In other words, the duty is changed and the duty is made smaller according to the lower bar. However, since the bar is always operated by switching, the problem of switching pulses output from the drive system must be solved.
本発明の蛍光表示管駆動装置はアナログ量を表わすバー
グラフタイプの蛍光表示管の上位のバーの電極より下位
のバーの電極に向う方向にダイオードを接続し、表示量
の最上位のバーの電極のみに通電して表示することを特
徴とする。The fluorescent display tube driving device of the present invention connects a diode in a direction from the upper bar electrode to the lower bar electrode of a bar graph type fluorescent display tube that expresses an analog quantity, and connects the upper bar electrode of the display quantity to the lower bar electrode. The feature is that the display is displayed by energizing only the
次に、本発明について図面を参照して説明する。 Next, the present invention will be explained with reference to the drawings.
第１図はバーグラフタイプの蛍光表示管の構成を示し、
２は表示セグメント、３はグリッド、４はフィラメント
、５はカバーガラス、６は陽極である。このように構成
される蛍光表示管を駆動する構成を示す第２図を参照す
ると、ｎ番目のバーく表示セグメント）Ｂｎを最上位バ
ーとして表示する場合、電極Ｔｎに通電する。通常のシ
リコンダイオードにおける電圧降下は０．６Ｖであり、
電極Ｔ、、はＴｌ、の電位に対し０．６Ｖ下がった電圧
が印加され、電極Ｔ ａ−２には１．２Ｖ下がった電圧
が印加され、順次０．６ Ｖづつ下がった電圧が印加さ
れる。第３図にグリッド電圧一定の場合の陽極電圧に対
する輝度の一般的な特性を示すように、バーグラフタイ
プの各々のバーは輝度カーブを０゜６Ｖづつの段階で切
ったレベルの輝度にて連続的に発光する。なお、第４図
は３個のダイオードを接続した他の実施例であるが、こ
の場合は第２図の場合より輝度比は大きくなる。Figure 1 shows the configuration of a bar graph type fluorescent display tube.
2 is a display segment, 3 is a grid, 4 is a filament, 5 is a cover glass, and 6 is an anode. Referring to FIG. 2, which shows the configuration for driving the fluorescent display tube configured as described above, when displaying the n-th bar display segment (Bn) as the topmost bar, the electrode Tn is energized. The voltage drop in a normal silicon diode is 0.6V,
A voltage that is 0.6 V lower than the potential of Tl is applied to the electrodes T, and a voltage that is 1.2 V lower than the potential of Tl is applied to the electrode T. Ru. As shown in Figure 3, which shows the general characteristics of brightness with respect to anode voltage when the grid voltage is constant, each bar of the bar graph type is continuous at a level of brightness that cuts the brightness curve in steps of 0°6V. It emits light. Note that FIG. 4 shows another embodiment in which three diodes are connected, and in this case, the brightness ratio is larger than in the case of FIG. 2.
以上説明したように本発明によれば、バーグラフタイプ
の蛍光表示管によってアナログ量を表示する場合、アナ
ログ量およびその最大値を容易に表示することができる
。As described above, according to the present invention, when an analog quantity is displayed using a bar graph type fluorescent display tube, the analog quantity and its maximum value can be easily displayed.
第１図はバーグラフタイプの蛍光表示管の一例を示す構
成図、第２図は本発明の一実施例を示す構成図、第３図
はグリッド電圧一定の場合の陽極電圧に対する輝度を表
わす特性図、第４図は本発明の他の実施例を示す構成図
である。
Ｂ１．Ｂ、！、Ｂ、−・・バー（表示セグメント）、Ｔ
、、Ｔ、２ 、Ｔ、−１、Ｔ、 ・・・電極。
代理人 弁理士 内 原 晋
１１ ７’ｙｔ−ｚ ７ｔ−ｔ ７＊貫Ｚ
回
万 Ｔｙｒ−／ん
扁４回Fig. 1 is a block diagram showing an example of a bar graph type fluorescent display tube, Fig. 2 is a block diagram showing an embodiment of the present invention, and Fig. 3 is a characteristic showing brightness versus anode voltage when the grid voltage is constant. 4 are configuration diagrams showing other embodiments of the present invention. B1. B,! , B, -...bar (display segment), T
,,T,2,T,-1,T,...electrode. Agent Patent Attorney Susumu Uchihara 11 7'yt-z 7t-t 7*KanZ
4 times Tyr-/nbian
Claims (1)
位のバーの電極より下位のバーの電極に向う方向にダイ
オードを接続し、表示量の最上位のバーの電極のみに通
電して表示することを特徴とする蛍光表示管駆動装置。A diode is connected in the direction from the upper bar electrode to the lower bar electrode of a bar graph type fluorescent display tube that represents an analog quantity, and the display is performed by energizing only the top bar electrode of the displayed quantity. Characteristic fluorescent display tube drive device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13017787A JPS63293593A (en) | 1987-05-26 | 1987-05-26 | Fluorescent indicator tube driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13017787A JPS63293593A (en) | 1987-05-26 | 1987-05-26 | Fluorescent indicator tube driver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63293593A true JPS63293593A (en) | 1988-11-30 |
Family
ID=15027889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13017787A Pending JPS63293593A (en) | 1987-05-26 | 1987-05-26 | Fluorescent indicator tube driver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63293593A (en) |
-
1987
- 1987-05-26 JP JP13017787A patent/JPS63293593A/en active Pending
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