JPS6074389A - Device for firing cold-cathode discharge lamp - Google Patents
Device for firing cold-cathode discharge lampInfo
- Publication number
- JPS6074389A JPS6074389A JP18226983A JP18226983A JPS6074389A JP S6074389 A JPS6074389 A JP S6074389A JP 18226983 A JP18226983 A JP 18226983A JP 18226983 A JP18226983 A JP 18226983A JP S6074389 A JPS6074389 A JP S6074389A
- Authority
- JP
- Japan
- Prior art keywords
- discharge lamp
- cathode discharge
- lamp
- cold cathode
- power supply
- 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
- Circuit Arrangements For Discharge Lamps (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】
本発明は複数個の冷陰極放電灯を並列点灯する冷陰極放
電灯点灯装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cold cathode discharge lamp lighting device for lighting a plurality of cold cathode discharge lamps in parallel.
冷陰極放電灯(以下単に放電灯という)は、一般にラン
プ電流が小さく(たとえば数mA)、このため、安定点
灯までかなりの時間を要する。また、複数個の放電灯を
並列点灯する場合、各放?IL灯のバラツキ等により安
定時までの時間が異なり、明るさの立上りにアンバラン
スが生じる。したがって、このようなものを複写機に用
いると所定の光出力を得られる時間が異なるという不都
合がある。Cold cathode discharge lamps (hereinafter simply referred to as discharge lamps) generally have a small lamp current (for example, several mA), and therefore require a considerable amount of time to stably light up. Also, when lighting multiple discharge lamps in parallel, each discharge lamp The time required for stabilization differs due to variations in the IL lamp, resulting in an imbalance in the rise in brightness. Therefore, when such a device is used in a copying machine, there is a problem that the time required to obtain a predetermined optical output differs.
本発明は、上記事情を考慮してなされたもので、複数個
の放電灯を並列点灯する場合の各放電灯の立上りを制御
して、所定時間にはすべての放電灯が安定点灯状態とな
り、光出力の立上り時間を制御できる冷陰極放電灯点灯
装置を提供することを目的とするものである。The present invention has been made in consideration of the above circumstances, and it controls the rise of each discharge lamp when lighting a plurality of discharge lamps in parallel, so that all the discharge lamps are in a stable lighting state within a predetermined time. It is an object of the present invention to provide a cold cathode discharge lamp lighting device that can control the rise time of light output.
本発明は、複数の放電灯の印加電圧値を異ならせて、始
動時間に差を持たせ、さらに、最も始動の遅い放電灯の
ランプ電流を定電流化することを特徴とするものである
。The present invention is characterized in that the voltage values applied to a plurality of discharge lamps are varied to provide a difference in starting time, and furthermore, the lamp current of the discharge lamp that starts the slowest is made constant.
以下、本発明の一実施例を図を参照して説明する。(1
)、(2)はそれぞれ放電灯で、互いに並列的に設けら
れているが、印加される電圧は異なるようになされてい
る。(3)、(4)はバラスト用のインピーダンスたと
えば抵抗である。しかし、他の素子を用いてもよいもの
である。(5)は前記各放電灯(3)、(4)の付勢用
電源装置で、たとえば20 KHz 〜50 KHzの
高周波電圧を出力するものである。このような付勢用電
源装f3. (5)はインバータ、チョッパ等を用いて
構成することができる。しかし、付勢用電源装R(5)
は商用電源のような低周波電源でもよいものである。こ
の場合には、フリッカ、ストロボ効果の解決は困難であ
る。なお、(6)は直流電源で、バッテリ、交流電圧を
整流したもの、整流平滑したもの等である。つぎに(力
は制御装置で、前記各放電灯(1)、(2)のうち最も
始動の遅い放電灯(1)のランプ電流を定電流化するも
ので、本実施例では、電流検出用の抵抗(8)と、この
検出用抵抗(8)の出力と基準信号とを比較し、前記付
勢用電源装置(5)の出力を制御する比較装置(9>と
からなるものである。An embodiment of the present invention will be described below with reference to the drawings. (1
) and (2) are discharge lamps, which are provided in parallel with each other, but the voltages applied are different. (3) and (4) are ballast impedances, such as resistances. However, other elements may also be used. (5) is a power supply device for energizing each of the discharge lamps (3) and (4), which outputs a high frequency voltage of, for example, 20 KHz to 50 KHz. Such a biasing power supply device f3. (5) can be configured using an inverter, chopper, etc. However, the energizing power supply R (5)
may be a low frequency power source such as a commercial power source. In this case, it is difficult to solve flicker and strobe effects. Note that (6) is a DC power source, such as a battery, a rectified AC voltage, or a rectified and smoothed AC voltage. Next, the controller is used to make the lamp current of the discharge lamp (1), which starts the slowest among the discharge lamps (1) and (2), into a constant current. and a comparison device (9) that compares the output of the detection resistor (8) with a reference signal and controls the output of the energizing power supply device (5).
このような、制御装置(7)自体の構成は周知である。The configuration of the control device (7) itself is well known.
つぎに、作用を述べる。付勢用電源装置(5)を投入す
ると、相対的に高い電圧を印加される放電灯(2)が始
動し、ついで、放電灯(1)が始動する。この放電灯(
1)のランプ電流は制御装置(7)にて定電1流となる
ように制御される。したがって、放電灯(1)はやがて
安定点灯状態となり所定の光を出力する。Next, the effect will be described. When the energizing power supply device (5) is turned on, the discharge lamp (2) to which a relatively high voltage is applied starts, and then the discharge lamp (1) starts. This discharge lamp (
The lamp current in step 1) is controlled by the control device (7) to be a constant current of one current. Therefore, the discharge lamp (1) eventually becomes in a stable lighting state and outputs a predetermined light.
これに先だって放電灯(2)は始動し、安定点灯となる
から、放電灯(1)の立上りを管理すれば両数電灯(1
)、(2)の立上りを管理できる。したがって、従来の
ように各放電灯の立上りがまちまちで所定の光出力を得
るまでの時間を管理できないといったことがなくなる。Prior to this, the discharge lamp (2) starts and becomes stable, so if you manage the start-up of the discharge lamp (1), both lamps (1)
), the rise of (2) can be managed. Therefore, it is no longer possible to manage the time required to obtain a predetermined light output due to the uneven rise of each discharge lamp as in the conventional case.
なお、放電灯が3灯以上でも同様に各放電灯の立上り時
間を管理できることは容易に理解されるであろう。It will be easily understood that even if there are three or more discharge lamps, the rise time of each discharge lamp can be managed in the same way.
以上詳述したように本発明は、複数個の冷陰極放電灯を
並列点灯するもので、各放電灯への印加電圧値を異なら
せ、始動時間に差を持たせるとともに、最も始動の遅い
放電灯のランプ電流を定′11“L流制御するようにし
たから、すべての放電灯が安定点灯状態に達するまでの
時間を管理でき、各放電灯から所定の光出力を得られる
までの時間設定が可能となる。As described in detail above, the present invention is to light a plurality of cold cathode discharge lamps in parallel, and the applied voltage value to each discharge lamp is different to provide a difference in starting time. Since the lamp current of the electric lamp is controlled at a constant 11"L flow, it is possible to control the time until all discharge lamps reach a stable lighting state, and it is possible to set the time until a specified light output is obtained from each discharge lamp. becomes possible.
「は本発明の一実施例を示す回路図である。
(1)、(2)・・・冷陰極放電灯(5)・・・付勢用
電源装置(7)・・・制御装置
特許出願人 東芝電材株式会社
代理人 弁理士 小野1)芳 弘
図面の浄書(内容に変更なし)
手続補正口く自発)
1.事件の表示
昭和58年特許願第182269号
2、発明の名称
冷陰極放電灯点灯装置
3、補正をする者
事件との関係 特許出願人
東京都港区三田1丁目4番28号
トリジrrヂン→7’4
(375)東芝電材株式会社
サ トウ タイ ロク
代表者 佐藤大六
4、代 理 人
〒210
神奈川県川崎市幸区堀川町72番地
東芝電材株式会社 堀用町事業場内
5、補正の対象
明1書および図面
6、補正の内容
(1)明細書全文を別紙のとおり訂正する(浄書、内容
に変更なし)。
(2)図面を別紙のとおり訂正する(浄書、内容に変更
なし)。" is a circuit diagram showing one embodiment of the present invention. (1), (2)... cold cathode discharge lamp (5)... energizing power supply device (7)... control device patent application Person Toshiba Electric Materials Co., Ltd. Agent Patent Attorney Ono 1) Engraving of Hiroshi Yoshi drawing (no change in content Procedural amendment spontaneously) 1. Indication of the case 1982 Patent Application No. 182269 2. Name of invention cold cathode radiation Electric light lighting device 3, relationship with the case of the person making the amendment Patent applicant: Toriji 1-4-28, Mita, Minato-ku, Tokyo → 7'4 (375) Toshiba Electric Materials Corporation Sato Tai Roku Representative Dairoku Sato 4. Agent Address: 72 Horikawa-cho, Saiwai-ku, Kawasaki-shi, Kanagawa Prefecture, 210 Toshiba Electric Materials Corporation, Horiyomachi Plant 5. Subject of the amendment: Document 1 and drawings 6. Contents of the amendment (1) Full text of the specification attached. (Engraving, no change in content). (2) Correct the drawing as shown in the attached sheet (Engraving, no change in content).
Claims (2)
圧を印加されて始動時間に差を有する複数個の冷陰極放
電灯と、 これら各冷陰極放電灯の付勢用電源装置と、上記各放電
灯のうち最も遅く始動する放電灯のランプ電流に応じて
上記付勢用電源装置の出力を上記ランプ電流が一定にな
るように制御する制御装置と、 を具備したことを特徴とする冷陰極放電灯点灯装置。(1) A plurality of cold cathode discharge lamps that are arranged in parallel with each other and have different starting times applied with different voltages, a power supply device for energizing each of these cold cathode discharge lamps, and each of the above discharge lamps. A cold cathode discharge lamp comprising: a control device that controls the output of the energizing power supply device so that the lamp current is constant according to the lamp current of the discharge lamp that starts the latest among the lamps. lighting device.
EG(zの高周波電圧を出力するものであることを特徴
とする特許請求の範囲(1)記載の冷陰極放電灯装置。(2) The energizing power supply device has a frequency of 20 KHz to 501 KHz.
The cold cathode discharge lamp device according to claim (1), which outputs a high frequency voltage of EG (z).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18226983A JPS6074389A (en) | 1983-09-30 | 1983-09-30 | Device for firing cold-cathode discharge lamp |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18226983A JPS6074389A (en) | 1983-09-30 | 1983-09-30 | Device for firing cold-cathode discharge lamp |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6074389A true JPS6074389A (en) | 1985-04-26 |
Family
ID=16115301
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18226983A Pending JPS6074389A (en) | 1983-09-30 | 1983-09-30 | Device for firing cold-cathode discharge lamp |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6074389A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008053514A1 (en) * | 2006-10-30 | 2008-05-08 | Sanken Electric Co., Ltd. | Discharge lamp lighting apparatus |
-
1983
- 1983-09-30 JP JP18226983A patent/JPS6074389A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008053514A1 (en) * | 2006-10-30 | 2008-05-08 | Sanken Electric Co., Ltd. | Discharge lamp lighting apparatus |
JPWO2008053514A1 (en) * | 2006-10-30 | 2010-02-25 | サンケン電気株式会社 | Discharge lamp lighting device |
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