JPH0642215Y2 - Charge indicator - Google Patents
Charge indicatorInfo
- Publication number
- JPH0642215Y2 JPH0642215Y2 JP1986128951U JP12895186U JPH0642215Y2 JP H0642215 Y2 JPH0642215 Y2 JP H0642215Y2 JP 1986128951 U JP1986128951 U JP 1986128951U JP 12895186 U JP12895186 U JP 12895186U JP H0642215 Y2 JPH0642215 Y2 JP H0642215Y2
- Authority
- JP
- Japan
- Prior art keywords
- side current
- liquid crystal
- display
- voltage
- current collector
- 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 - Lifetime
Links
Description
【考案の詳細な説明】 産業上の利用分野 本考案は各種電気機器が課電状態にあるか否かを判別す
る課電表示器の構造に関するものである。DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to a structure of a charging indicator for determining whether or not various electric devices are in a charging state.
従来の技術 従来の課電表示器の一例を第２図に示す。図中１は判別
対象機器の充電部、２は大地、３は機器側集電板、３′
は大地側集電板である。４は液晶表示素子、４′は液
晶、５および５′は液晶表示素子の電極、６および６′
はリード線で機器側集電板３と電極５、大地側集電板
３′と電極５′をそれぞれ接続している。CSは機器側集
電板３と充電部１間の静電容量である。2. Description of the Related Art An example of a conventional charging indicator is shown in FIG. In the figure, 1 is a charging part of the determination target device, 2 is ground, 3 is a device side current collecting plate, 3 '
Is a ground side current collecting plate. 4 is a liquid crystal display element, 4'is a liquid crystal, 5 and 5'are electrodes of the liquid crystal display element, and 6 and 6 '.
Is connected to the device side current collector 3 and the electrode 5, and the ground side current collector 3'and the electrode 5 ', respectively. C S is the capacitance between the device-side current collector 3 and the charging unit 1.
上記の構成では大地側集電板３′は１個であり、充電部
１に定格電圧Ｖが印加されると、大地側集電板３′およ
びこれに接続された電極５′と他の電極５との間に液晶
表示素子４のしきい値以上の電圧VLが発生して課電状態
にあることを示すように設定されていた。In the above configuration, the number of the ground side current collector plate 3'is one, and when the rated voltage V is applied to the charging unit 1, the ground side current collector plate 3'and the electrode 5'and other electrodes connected thereto. 5 and the voltage V L above the threshold value of the liquid crystal display element 4 is generated between them and 5 to indicate that the liquid crystal display element 4 is in a charged state.
考案が解決しようとする問題点 従来の課電表示器は定格電圧が印加されているか否かの
表示はできるが、定格よりも低い電圧がかかっていても
表示しない。しかし、定格電圧よりも低い電圧がかかっ
ていても危険であることを表示したほうがよいこともあ
る。従来の課電表示器ではこうした対応は出来なかっ
た。また、長期使用中にリード線の断線や接触不良など
が発生して表示しなくなると、無課電状態なのか表示器
の故障なのかの判別がつかないなどの問題点があった。Problems to be Solved by the Invention Although the conventional charging indicator can display whether or not the rated voltage is applied, it does not display even if a voltage lower than the rated voltage is applied. However, it may be necessary to indicate that it is dangerous even if a voltage lower than the rated voltage is applied. The conventional charging indicator could not do this. Further, when the lead wire is broken or the contact is bad during long-term use and the display is stopped, there is a problem that it is not possible to determine whether the power is not applied or the display is out of order.
問題点を解決するための手段 液晶表示素子の大地側集電板と電極を複数の部分に分け
た構成とする。Means for Solving the Problems The ground-side current collector plate and the electrode of the liquid crystal display element are divided into a plurality of parts.
作用および実施例 第１図は本考案の実施例で、第２図と対応する各構成部
分には同一の符号を付し重複する説明は省略する。図中
15はコモン電極、15a′、15b′は２つに分割した表示パ
ターン電極で、それぞれが２つに分かれた大地側集電板
3a′、3b′にリード線16、16′によって接続されてい
る。Operation and Embodiment FIG. 1 is an embodiment of the present invention, and the same reference numerals are given to the respective components corresponding to those in FIG. 2 and duplicated description will be omitted. In the figure
Reference numeral 15 is a common electrode, and 15a 'and 15b' are display pattern electrodes which are divided into two parts.
The lead wires 16 and 16 'are connected to 3a' and 3b '.
一般に外部電界が同じならば、液晶表示素子14のコモン
電極15と表示パターン電極15a′、15b′間に誘起される
電圧は、近似的にその両電極間の静電容量CLと大地側集
電板の対地静電容量COの比CL／COに反比例する。また、
この電極間の静電容量CLは表示パターン電極15a′、15
b′の面積に比例し、大地側集電板の3a′、3b′の対地
静電容量COもその面積に比例する。Generally, if the external electric field is the same, the voltage induced between the common electrode 15 of the liquid crystal display element 14 and the display pattern electrodes 15a ′, 15b ′ is approximately the electrostatic capacitance C L between the two electrodes and the ground side concentration. It is inversely proportional to the ratio C L / C O of the earth capacitance C O of the collector plate. Also,
The capacitance C L between the electrodes is the display pattern electrodes 15a ′, 15
It is proportional to the area of b ', and the electrostatic capacitance C O of the ground side current collecting plates 3a' and 3b 'is also proportional to the area.
そこで表示パターン電極15a′、15b′の面積を同一にと
り、大地側集電板3a′、3b′の各面積の比を例えば３対
１にとれば、それぞれの表示パターン電極15a′、15b′
がコモン電極15との間に誘起する電圧の大きさは３対１
となる。それゆえ、表示パターン電極15b′を充電部１
に定格電圧Ｖが印加された時にしきい値電圧に達する大
きさに設定しておけば、表示パターン電極15a′は定格
電圧の1/3の充電電圧でしきい値電圧に達する。すなわ
ち、このように構成した課電表示器は、定格電圧で完全
表示をするとともに、定格電圧の1/3で部分表示をする
特性を持つ。また無表示状態では、充電部１の電圧は定
格電圧の1/3以下であると推定できる。Therefore, if the display pattern electrodes 15a 'and 15b' have the same area and the ratio of the areas of the ground side current collecting plates 3a 'and 3b' is set to, for example, 3: 1, the respective display pattern electrodes 15a 'and 15b'.
The magnitude of the voltage induced between the common electrode 15 and
Becomes Therefore, the display pattern electrode 15b 'is connected to the charging unit 1
When the rated voltage V is applied to the display pattern electrode 15a ', the display pattern electrode 15a' reaches the threshold voltage at a charging voltage of 1/3 of the rated voltage. That is, the charging indicator configured in this way has the characteristic of performing full display at the rated voltage and partial display at 1/3 of the rated voltage. In the non-display state, the voltage of the charging unit 1 can be estimated to be 1/3 or less of the rated voltage.
以上は一例であって、液晶表示素子４の表示パターン電
極15a′、15b′と大地側集電板の3a′、3b′の分割の仕
方を変えれば、多様な表示電圧特性のものが製作可能な
ことは容易に類推できる。The above is an example, and various display voltage characteristics can be produced by changing the way of dividing the display pattern electrodes 15a ', 15b' of the liquid crystal display element 4 and the ground side current collecting plates 3a ', 3b'. It is easy to analogize.
考案の効果 以上述べたように本考案の課電表示器は、他相からの誘
導で定格電圧より低いが、十分に危険な高電圧が充電部
かかっている場合などにも、課電表示器の一部分に表示
をさせることができる。Effect of the Invention As described above, the voltage indicator of the present invention is lower than the rated voltage due to induction from another phase, but the voltage indicator can be used even when a dangerously high voltage is applied to the charging part. The display can be made on a part of.
さらに本考案は次の副次的効果もある。課電表示器はす
べての機器と同様に、長期使用中に劣化が進んでリード
線の断線や接触不良が発生するおそれがあるが、本考案
のように複数の部分にわけておけば、劣化がすべての部
分で全く同時に進行する確率は小さいので、部分的な表
示不良がまず現れる。部分的な表示不良が現れた時点で
この課電表示器を取り替えれば、課電状態であるにも拘
らず完全に表示しないため、無課電なのか表示機器の故
障なのか判別できないという事態を回避できる。Furthermore, the present invention has the following secondary effects. Like all devices, the voltage indicator may deteriorate during long-term use and lead wire breakage or contact failure may occur, but if it is divided into multiple parts as in the present invention, it will deteriorate. Since there is a small probability that all will progress at the same time in all parts, a partial display defect will appear first. If this charging indicator is replaced when a partial display defect appears, it will not be displayed completely even though it is in a charged state, so it is impossible to determine whether there is no voltage or a failure in the display device. Can be avoided.
第１図は本考案の原理を説明するための図、第２図は従
来の例を示す図である。 図において、３′、3a′、3b′は大地側集電板、４は液
晶表示素子、15a′、15b′は電極である。FIG. 1 is a diagram for explaining the principle of the present invention, and FIG. 2 is a diagram showing a conventional example. In the figure, 3 ', 3a' and 3b 'are ground side current collecting plates, 4 is a liquid crystal display element, and 15a' and 15b 'are electrodes.
Claims (1)
集電板で構成し、電線路や電気機器に取り付けてその充
電中を検出表示する課電表示器において、 液晶表示素子の液晶を挟む電極を、 充電部との間に静電容量を形成する機器側集電板に接続
するコモン電極と、 電気的に独立し各々が大地間に静電容量を形成する複数
の大地側集電板にそれぞれ接続する複数の表示パターン
とで構成した、課電表示器。1. A charge display comprising a liquid crystal display element, a device side current collector and a ground side current collector, which is attached to an electric line or an electric device to detect and display charging, and the liquid crystal of the liquid crystal display element. The common electrode that connects the electrode that sandwiches the capacitor to the device side current collector that forms a capacitance between the charging part and a plurality of ground side electrodes that are electrically independent and each form a capacitance between the ground. A charge indicator that is composed of multiple display patterns that are each connected to a power board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986128951U JPH0642215Y2 (en) | 1986-08-26 | 1986-08-26 | Charge indicator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986128951U JPH0642215Y2 (en) | 1986-08-26 | 1986-08-26 | Charge indicator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6335964U JPS6335964U (en) | 1988-03-08 |
| JPH0642215Y2 true JPH0642215Y2 (en) | 1994-11-02 |
Family
ID=31025086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986128951U Expired - Lifetime JPH0642215Y2 (en) | 1986-08-26 | 1986-08-26 | Charge indicator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0642215Y2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5319222B2 (en) * | 1972-09-22 | 1978-06-20 |
-
1986
- 1986-08-26 JP JP1986128951U patent/JPH0642215Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6335964U (en) | 1988-03-08 |
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