JPS5912598A - Device for firing high voltage discharge lamp - Google Patents
Device for firing high voltage discharge lampInfo
- Publication number
- JPS5912598A JPS5912598A JP57120872A JP12087282A JPS5912598A JP S5912598 A JPS5912598 A JP S5912598A JP 57120872 A JP57120872 A JP 57120872A JP 12087282 A JP12087282 A JP 12087282A JP S5912598 A JPS5912598 A JP S5912598A
- Authority
- JP
- Japan
- Prior art keywords
- discharge lamp
- arc tube
- current
- pressure discharge
- lighting device
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
- Discharge Lamps And Accessories Thereof (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】
本発明は高圧放電ランプの発光効率の向上を図った点灯
装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a lighting device for improving the luminous efficiency of a high-pressure discharge lamp.
第１図は従来の高圧放電ランプの構造とその点灯回路図
を示し、ｌは発光管、２，３は夫々発光管１の両端に封
止された電極、４は発光管１の下部の外周を覆うように
被着した保温膜、５は発光管１を収納する外管、６，７
はリー、ド、８は口金で、これらによシ高圧放電ランプ
９が構成される。FIG. 1 shows the structure of a conventional high-pressure discharge lamp and its lighting circuit diagram, where l is an arc tube, 2 and 3 are electrodes sealed at both ends of the arc tube 1, and 4 is the outer periphery of the lower part of the arc tube 1. 5 is an outer tube that houses the arc tube 1; 6 and 7 are
A high-pressure discharge lamp 9 is constituted by these elements.
又、１０はチョークコイル等の誘導性インダクタンスで
構成される点灯装置、１０ａ、１０ｂは点灯装置９の出
力端子、１１は商用電源である。さらに、発光管１の内
部には水銀、アルゴンに加え金属のハロケ°ン化物が封
入され、外管５内には希ガスが封入される。Further, 10 is a lighting device composed of an inductive inductance such as a choke coil, 10a and 10b are output terminals of the lighting device 9, and 11 is a commercial power source. Furthermore, in addition to mercury and argon, a metal halide is sealed inside the arc tube 1, and a rare gas is sealed inside the outer bulb 5.
次にこのような従来装置の動作について説明する。今、
上記のように構成された高圧放電ランプ９を口金８が上
になるように鉛直に配置して点灯装置１０を介して商用
電源１１を印加すると、発光管１が点灯し点灯装置１ｏ
で制限される電流が流れて安定点灯状態になる。このと
き、発光管１に印加される商用電源１１の電圧は正負の
各半サイクルが対称であるため発光管１の内部の温度分
布は発光管ｌの点灯方向によって決定される。即ち、発
光管１の内部温度は、発光管１の上部に位置する電極３
付近が最高となり発光管ｌの下部に行くに従って低下し
下部に位置する電極２付近が最低となる。従って、発光
管１の最冷点は電極２の付近となシ過剰に封入され蒸発
しない金属のハロケ°ン化物が最冷点伺近に付着してお
り、電極２付近を覆っている保温膜４は最冷点の温度を
高くして金属のハロケ°ン化物を蒸発させ、発光管１の
放電による発光が最適となるようにしていた。Next, the operation of such a conventional device will be explained. now,
When the high-pressure discharge lamp 9 configured as described above is placed vertically with the cap 8 facing upward and a commercial power source 11 is applied through the lighting device 10, the arc tube 1 lights up and the lighting device 1o
A current limited by the current flows and a stable lighting condition is achieved. At this time, since the voltage of the commercial power supply 11 applied to the arc tube 1 is symmetrical in each positive and negative half cycle, the temperature distribution inside the arc tube 1 is determined by the lighting direction of the arc tube 1. That is, the internal temperature of the arc tube 1 is lower than that of the electrode 3 located at the top of the arc tube 1.
It is highest near the bottom of the arc tube 1, decreases toward the bottom of the arc tube 1, and is lowest near the electrode 2 located at the bottom. Therefore, the coldest point of the arc tube 1 is near the electrode 2, and the metal halide which is excessively sealed and does not evaporate is attached near the coldest point, and the heat insulating film covering the vicinity of the electrode 2 4, the temperature at the coldest point was raised to evaporate the metal halide, so that the light emission from the discharge of the arc tube 1 was optimized.
しかしこのような従来装置では次のような欠点があった
二即ち、保温膜４を塗布することによって最冷点の温度
を上昇させ、発光管１の放電による発光が最適になるよ
うにするためには、保温膜４＆よ下部に位置する電極２
の先端よシ上部まで塗布する必要がある。従って、発光
効率は発光管１内の発光が最適であっても発光管１の外
部に放射される光が保温膜４によって遮光されるため低
くなシ勝であった。又、電極２，３の温度も同様にして
下部に位置する電極２の温度が上部に位置する電極３よ
シも低くなシミ極２，３の両方ともに最適の動作製置を
得ることは困難である等の欠点本発明は上記欠点を除去
し、点灯波形によって温度分布を改善し、最適の発光が
得られるようにした点灯装置を提供することを目的とす
る。However, such conventional devices have the following drawbacks: 2. In order to increase the temperature of the coldest point by applying the heat insulating film 4, the light emission by the discharge of the arc tube 1 is optimized. There is a heat insulating film 4 & an electrode 2 located at the bottom.
It is necessary to apply from the tip to the top. Therefore, even if the light emission inside the arc tube 1 is optimal, the luminous efficiency is low because the light emitted to the outside of the arc tube 1 is blocked by the heat insulating film 4. In addition, the temperature of electrodes 2 and 3 is similarly low, and the temperature of electrode 2 located at the bottom is lower than that of electrode 3 located at the top.It is difficult to obtain an optimal operational arrangement for both electrodes 2 and 3. It is an object of the present invention to provide a lighting device which eliminates the above-mentioned drawbacks, improves temperature distribution through lighting waveforms, and provides optimum light emission.
以下本発明の詳細な説明する。第２図は高圧放電ランプ
の構造とその点灯回路図、第３図は点灯回路の動作説明
図である。図において、１２は口金８と商用電源１１と
の間に接続された点灯装置、１２ａ、１２ｂＦｉ、点灯
装置の出力端子である。The present invention will be explained in detail below. FIG. 2 is a diagram showing the structure of a high-pressure discharge lamp and its lighting circuit, and FIG. 3 is an explanatory diagram of the operation of the lighting circuit. In the figure, 12 is a lighting device connected between the base 8 and the commercial power source 11, 12a, 12bFi, and an output terminal of the lighting device.
点灯装置１２は、商用電源１１を全波整流する整流回路
１３、整流回路１３の出力を平滑するコンデンサ１４、
トランジスタ１５〜１８、ランプ電流を制限する抵抗１
９，２０およびトランジスタ１５〜１８ケオンオ７制御
する制御回路２１とから構成される。尚、抵抗２０の抵
抗値は抵抗１９の抵抗値よシも大きく設定されている。The lighting device 12 includes a rectifier circuit 13 that performs full-wave rectification of the commercial power supply 11, a capacitor 14 that smoothes the output of the rectifier circuit 13,
Transistors 15-18, resistor 1 for limiting lamp current
9 and 20, and a control circuit 21 that controls transistors 15 to 18 and 7. Note that the resistance value of the resistor 20 is set to be larger than that of the resistor 19.
次に上記装置の動作について説明する。今、高圧放電ラ
ンプ９は口金８を上にして鉛直方向に設置されている。Next, the operation of the above device will be explained. The high-pressure discharge lamp 9 is now installed vertically with the base 8 facing upward.
商用＠、Ｈ，ｔｘが点灯装置１２に印加されると、開用
′屯源ｌｌの電圧は整流回路１３によシ全波整流された
後コンデンサ１４で平滑されリップルの少い直流電圧に
変換される。それと同時に制御回路２１も動作しトラン
ジスタ１５〜１８をオンオフさせて上記直流電圧を矩形
波に変換する。即ち、制御回路２１の動作によりトラン
ジスタ１５．１８ｉ同時にオンするとともにトランジス
タ１６．１７をオフにするとコンデンサ１４の電圧が出
力端子１２ａ、１２ｂに図示の極性で発生する。次にト
ランジスタ１５．１８をオフにしてトランジスタ１６．
１７をオンにすると、コンデンサ１４の電圧は出力端子
１２ａ、１２ｂに図示とは逆極性に発生する。従って、
点灯装置１２の出力電圧は矩形波となシ、この矩形波が
口金８およびリード６．７を介して発光管１に印加され
、発光管１には抵抗１９．２０によって制御される電流
が流れて安定点切状態になる。第３図において、（ａ）
はトランジスタ１５，１８の動作波形図、（ｂ）はトラ
ンジスタ１６．１７の動作波形図、（Ｃ）は発光管１に
印加される電流波形図を示す。ここで、トランジスタ１
５．１８がオンでトランジスタ１６゜１７がオフの状態
のときに抵抗２０を流れる電流の波高値を八〇 トラン
ジスタ１６．１７がオンでトランジスタ１５．１８がオ
フのときに抵抗１９を流れる電流の波高値をＡ２とする
と、抵抗２０が抵抗１８よシ大きいのでＡ、 ＜ Ａ、
となる。電流値がＡ、の間は発光管１の電極２が正で電
極３が負となシ、電流値Ａ２の間は反対に電極２が負で
電極３が正となる。従って、発光管１における最冷点に
近い方の電極２は負の電流の波高値が正の電流の波高値
より大きくなり、電極３に比べて電極２の発熱量が大き
くなる。このため、電極２，３の温度は均一になって最
適の動作温度が得られるとともに保温膜４も電極２よシ
下方まで塗布すれば良く、発光管１が放射する光が遮光
されることがなく、発光効率が高くなる。When commercial @, H, and tx are applied to the lighting device 12, the voltage of the open source 11 is full-wave rectified by the rectifier circuit 13, smoothed by the capacitor 14, and converted into a DC voltage with less ripple. be done. At the same time, the control circuit 21 also operates to turn on and off the transistors 15 to 18 to convert the DC voltage into a rectangular wave. That is, when transistors 15 and 18i are simultaneously turned on and transistors 16 and 17 are turned off by the operation of control circuit 21, a voltage of capacitor 14 is generated at output terminals 12a and 12b with the polarity shown. Next, transistors 15.18 are turned off and transistors 16.18 are turned off.
When the capacitor 17 is turned on, a voltage of the capacitor 14 is generated at the output terminals 12a and 12b with a polarity opposite to that shown. Therefore,
The output voltage of the lighting device 12 is a rectangular wave, and this rectangular wave is applied to the arc tube 1 via the base 8 and the lead 6.7, and a current controlled by the resistor 19.20 flows through the arc tube 1. It becomes a stable point-off state. In Figure 3, (a)
(b) is an operating waveform diagram of transistors 16, 17, and (C) is a current waveform diagram applied to arc tube 1. Here, transistor 1
5. The peak value of the current flowing through the resistor 20 when transistors 16 and 17 are on and off is 80. The peak value of the current flowing through the resistor 19 when transistor 16.17 is on and transistors 15 and 18 are off. If the peak value is A2, the resistance 20 is larger than the resistance 18, so A, < A,
becomes. When the current value is A, the electrode 2 of the arc tube 1 is positive and the electrode 3 is negative, and when the current value is A2, the electrode 2 is negative and the electrode 3 is positive. Therefore, in the electrode 2 which is closer to the coldest point in the arc tube 1, the peak value of the negative current is larger than the peak value of the positive current, and the amount of heat generated by the electrode 2 becomes larger than that of the electrode 3. Therefore, the temperature of the electrodes 2 and 3 becomes uniform to obtain the optimum operating temperature, and the heat insulating film 4 only needs to be applied to the lower part of the electrode 2, so that the light emitted by the arc tube 1 is blocked. This increases the luminous efficiency.
尚、上記実施例では、高圧放電ランプ９を鉛直にして点
灯する場合について述べたがこの場合だけでなく、例え
ば高圧放電ランプ９を水平に煮切した場合においても構
造上電極２，３の付近の゛温度にバラツキを生じる場合
にも本発明を通用することができる。又、高圧放電ラン
プは金属のハロケ゛ン化物を封入したもので々くても良
い３．さらに、点灯装置１２が発生する交流電流は矩形
波でなく正弦波や三角波でも良いが、矩形波にすれば回
路構成が最も簡単になる。In the above embodiment, the case where the high-pressure discharge lamp 9 is lit vertically has been described, but this is not the only case; for example, even when the high-pressure discharge lamp 9 is turned off horizontally, the structure near the electrodes 2, 3 The present invention can be applied even when there are variations in temperature. Also, the high-pressure discharge lamp may be one filled with metal halide.3. Further, the alternating current generated by the lighting device 12 may be a sine wave or a triangular wave instead of a rectangular wave, but the circuit configuration will be the simplest if the alternating current is a rectangular wave.
以上のように本発明の点灯装置は、正の半サイクルと負
の半サイクルで電流の波高値が異る交流電流を発生し、
この交流電流を高圧放電ランプの発光管の最冷点に近い
方の電極に負の半サイクルの電流の波高値が正の半サイ
クルより高くなる極性で印加しており、これによって高
圧放電ランプの発光管の温度を高くすることができ、各
電極の温度を均一にすることができるとともに保温膜に
よって発光′Ｒの発光を遮ることもなく、高圧放電ラン
プの発光効率を高めることができる。As described above, the lighting device of the present invention generates an alternating current with different current peak values in the positive half cycle and the negative half cycle,
This alternating current is applied to the electrode near the coldest point of the arc tube of the high-pressure discharge lamp with a polarity such that the peak value of the current in the negative half cycle is higher than that in the positive half cycle. The temperature of the arc tube can be increased, the temperature of each electrode can be made uniform, and the light emission 'R is not blocked by the heat insulating film, so that the luminous efficiency of the high pressure discharge lamp can be increased.
第１図は従来における高圧放ｔｉｔランプの構造および
点灯回路図、第２図は本発明に係る高圧放電ランプの構
造および点灯回路図、第３図は本発明装置の動作説明図
である。
１・・・発光管、２，３・・・電極、９・・・高圧放電
ランプ、１１・・・商用電源、１２・・・点灯装置、１
３・・・整流回路、１４・・・コンデンサ、１５〜１８
・・・トランジスタ、１９．２０・・・抵抗。
尚、図中同一符号は同−又は相当する部分を示す。
代理人 葛 野 信 −FIG. 1 is a structure and lighting circuit diagram of a conventional high-pressure discharge lamp, FIG. 2 is a structure and lighting circuit diagram of a high-pressure discharge lamp according to the present invention, and FIG. 3 is an explanatory diagram of the operation of the apparatus of the present invention. DESCRIPTION OF SYMBOLS 1... Arc tube, 2, 3... Electrode, 9... High pressure discharge lamp, 11... Commercial power supply, 12... Lighting device, 1
3... Rectifier circuit, 14... Capacitor, 15-18
...transistor, 19.20...resistance. Note that the same reference numerals in the figures indicate the same or corresponding parts. Agent Shin Kuzuno −
Claims (2)
ンプを点灯する高圧放電ランプの点灯装置において、１
サイクル中の正の半サイクルと負の半サイクルにおける
電流の波高値が異る交流電流を発生し、この交流電流を
発光管にその最冷点に近い方の電極が負の電流の波高値
が正の電流の波高値よシ高くなる極性で印加したことを
特徴とする高圧放電ランプの点灯装置。(1) In a high-pressure discharge lamp lighting device for lighting a high-pressure discharge lamp having an arc tube with electrodes sealed at both ends, 1
An alternating current with different current peak values in the positive half cycle and negative half cycle during the cycle is generated, and this alternating current is passed through the arc tube to the electrode closest to the coldest point where the negative current peak value is different. A lighting device for a high-pressure discharge lamp, characterized in that a positive current is applied with a polarity higher than the peak value of the positive current.
許請求の範囲第１項記載の高圧放電ランプの点灯装置。(2) The lighting device for a high-pressure discharge lamp according to claim 1, wherein the current is a rectangular wave.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57120872A JPS5912598A (en) | 1982-07-12 | 1982-07-12 | Device for firing high voltage discharge lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57120872A JPS5912598A (en) | 1982-07-12 | 1982-07-12 | Device for firing high voltage discharge lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5912598A true JPS5912598A (en) | 1984-01-23 |
Family
ID=14797034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57120872A Pending JPS5912598A (en) | 1982-07-12 | 1982-07-12 | Device for firing high voltage discharge lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5912598A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002028151A1 (en) * | 2000-09-26 | 2002-04-04 | Iwasaki Electric Co., Ltd. | Hid lamp operating circuit |
| US6836078B2 (en) | 2000-09-26 | 2004-12-28 | Iwasaki Electric Co., Ltd. | Circuit for lighting HID lamp |
| JP2009206017A (en) * | 2008-02-29 | 2009-09-10 | Seiko Epson Corp | Driving method of discharge lamp, driving unit, and projector |
| WO2010050432A1 (en) * | 2008-10-27 | 2010-05-06 | パナソニック電工株式会社 | Illumination lighting device, discharge lamp lighting device, and vehicle headlamp lighting device using same |
| US8264164B2 (en) | 2008-02-27 | 2012-09-11 | Seiko Epson Corporation | Method of driving discharge lamp, driving device, and projector |
| US8350489B2 (en) | 2008-02-19 | 2013-01-08 | Seiko Epson Corporation | Method of driving discharge lamp, driving device, and projector |
-
1982
- 1982-07-12 JP JP57120872A patent/JPS5912598A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002028151A1 (en) * | 2000-09-26 | 2002-04-04 | Iwasaki Electric Co., Ltd. | Hid lamp operating circuit |
| EP1322141A1 (en) * | 2000-09-26 | 2003-06-25 | Iwasaki Electric Co., Ltd | Hid lamp operating circuit |
| EP1322141A4 (en) * | 2000-09-26 | 2003-11-05 | Iwasaki Electric Co Ltd | Hid lamp operating circuit |
| US6791286B2 (en) | 2000-09-26 | 2004-09-14 | Iwasaki Electric Co., Ltd. | Hid lamp operating circuit |
| US6836078B2 (en) | 2000-09-26 | 2004-12-28 | Iwasaki Electric Co., Ltd. | Circuit for lighting HID lamp |
| US8350489B2 (en) | 2008-02-19 | 2013-01-08 | Seiko Epson Corporation | Method of driving discharge lamp, driving device, and projector |
| US8264164B2 (en) | 2008-02-27 | 2012-09-11 | Seiko Epson Corporation | Method of driving discharge lamp, driving device, and projector |
| JP4525775B2 (en) * | 2008-02-29 | 2010-08-18 | セイコーエプソン株式会社 | Discharge lamp driving method, driving device, and projector |
| US8143802B2 (en) | 2008-02-29 | 2012-03-27 | Seiko Epson Corporation | Method of driving discharge lamp, driving device, and projector |
| US8344645B2 (en) | 2008-02-29 | 2013-01-01 | Seiko Epson Corporation | Method of driving discharge lamp, driving device, and projector |
| JP2009206017A (en) * | 2008-02-29 | 2009-09-10 | Seiko Epson Corp | Driving method of discharge lamp, driving unit, and projector |
| WO2010050432A1 (en) * | 2008-10-27 | 2010-05-06 | パナソニック電工株式会社 | Illumination lighting device, discharge lamp lighting device, and vehicle headlamp lighting device using same |
| US8482940B2 (en) | 2008-10-27 | 2013-07-09 | Panasonic Corporation | Illumination lighting device, discharge lamp lighting device, and vehicle headlamp lighting device using same |
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