JPH01280792A - Neon lighting device - Google Patents
Neon lighting deviceInfo
- Publication number
- JPH01280792A JPH01280792A JP11119788A JP11119788A JPH01280792A JP H01280792 A JPH01280792 A JP H01280792A JP 11119788 A JP11119788 A JP 11119788A JP 11119788 A JP11119788 A JP 11119788A JP H01280792 A JPH01280792 A JP H01280792A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- voltage
- output
- neon tube
- full
- 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.)
- Granted
Links
- 229910052754 neon Inorganic materials 0.000 title claims abstract description 25
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 238000001514 detection method Methods 0.000 claims abstract description 16
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims abstract description 11
- 230000010355 oscillation Effects 0.000 abstract description 11
- 238000010586 diagram Methods 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 230000004397 blinking Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 244000145845 chattering Species 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
「産業上の利用分野」
この発明は、ネオン管やアルゴン管等の電飾用放電管を
高周波の高電圧電源により、点灯するネオン点灯装置に
関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a neon lighting device for lighting an illumination discharge tube such as a neon tube or an argon tube using a high-frequency, high-voltage power source.
「従来の技術」
負荷であるネオン管の明るさを一定に保つ場合や調光を
行なう場合には、第５図に示すように交流ｔｉｌ］ｆｔ
ｔ＋と、直列に１〜ライアツク等のスイッチング素子１
２を挿入し、交流電源１１の電圧を電圧検出回路１３で
検出し、その検出出力でゲート回路１４を制御し、スイ
ッチング素子１２の導通角の位相を制御することによっ
て、交流電源の電圧を設定値に保つように安定化し、そ
の交流を全波整流回路１５で全波整流し、直流に変換し
、コンデンサ１６により平滑し、その直流をトランジス
タ等のスイッチング素子１７のＯＮ・ＯＦＦ動作によっ
てＯＮ・ＯＦＦ Ｉ、、そのＯＮ・ＯＦＦされた直流で
トランス１８を励磁し、高周波の高電圧に変換し、これ
を負荷であるネオン管１９に供給している。``Prior art'' When maintaining the brightness of a neon tube, which is a load, at a constant level or performing dimming, as shown in Fig. 5, AC til]ft
In series with t+, switching element 1 such as 1~Liac etc.
2, the voltage of the AC power supply 11 is detected by the voltage detection circuit 13, the gate circuit 14 is controlled by the detection output, and the phase of the conduction angle of the switching element 12 is controlled, thereby setting the voltage of the AC power supply. The alternating current is full-wave rectified by a full-wave rectifier circuit 15, converted to direct current, smoothed by a capacitor 16, and the direct current is turned on and off by the ON/OFF operation of a switching element 17 such as a transistor. OFF I, the transformer 18 is excited by the turned ON/OFF DC current, converted to high frequency high voltage, and supplied to the neon tube 19 which is a load.
あるいは第６図に示すように、交流電源１１を直接整流
、平滑し、その直流をトランジスタ等のスイッチング素
子１７でＯＮ・叶トし、直流電圧を電圧検出回路２１で
検出し、その検出出力により、入力端子に応じてスイッ
チング素子１′７のＯＮ・ＯＦＦのパルス幅を制御して
出力を一定に制御する。この方式は、スイッチングレギ
ュレータ等の他機器に多く採用されている方式である。Alternatively, as shown in FIG. 6, the AC power supply 11 is directly rectified and smoothed, the DC voltage is turned on and off by a switching element 17 such as a transistor, the DC voltage is detected by a voltage detection circuit 21, and the detected output is , the ON/OFF pulse width of the switching element 1'7 is controlled according to the input terminal, thereby controlling the output to be constant. This method is often used in other devices such as switching regulators.
「発明が解決しようとする課題」
しかしながら第５同に示した装置においては交流のスイ
ッチングと直流を高周波化するスイッチングと、２つの
スイッチングを行なうため、スイッチングの損失が大き
く、効率が悪いうえ、回路が複雑となって大型で、価格
が高いものとなってしまう。また交流電源の位相制御は
、導通角が小さくなると入力力率が悪くなり、入力のＶ
Ａが大きくなる欠点がある。``Problems to be Solved by the Invention'' However, the device shown in No. 5 performs two types of switching: alternating current switching and direct current high-frequency switching, so the switching loss is large, the efficiency is low, and the circuit However, it becomes complicated, large, and expensive. In addition, when controlling the phase of an AC power supply, the smaller the conduction angle, the worse the input power factor becomes.
There is a drawback that A becomes large.
この種の点灯装置は、出力が高電圧の高周波であるため
、負荷側の配線やネオン管の静電容量の影響か大きく、
無負荷時（ネオン管の破損や２次側コードの断線）の出
力電圧の持ち上りや高周波の帰還骨の増加による発熱や
漏れ電流の増加といった問題点がありあまり高い周波数
での実用化には問題があり、周波数としては、２０ｋｌ
ｉｚまでが限度となっている。しかしながら前記第６図
に示した装置で電圧制御をした場合、発振のデユティが
５０％を離れるにつれて、基本発振周波数の高調波成分
が増加し、より−層、負荷の静電容量の影響を大きく受
けるようになり、実用化には、問題がある。This type of lighting device outputs high voltage and high frequency, so it is greatly affected by the wiring on the load side and the capacitance of the neon tube.
There are problems such as a rise in the output voltage when there is no load (damage to the neon tube or disconnection of the secondary cord) and an increase in heat generation and leakage current due to an increase in the number of high-frequency feedback bones, making it difficult to put it into practical use at high frequencies. There is a problem, the frequency is 20kl
The limit is up to iz. However, when voltage control is performed using the device shown in FIG. However, there are problems with its practical application.
「課題を解決するだめの手段」
この発明によれば、交流型ａ、電圧が全波整流回路で全
波整流され、その全波整流回路を含む直流電源の両端間
にスイッチング素子を介して並列共振回路が接続され、
全波整流回路の両端間に電圧検出回路が接続され、入力
電圧に応し、電源の周波数と同期したパルス幅のパルス
信号を出力し、そのパルス信号により信号発生回路の動
作が制御され、信号発生回路の出力信号によってスイッ
チング素子がＯＮ・ＯＦＦ制御され、上記共振回路のコ
イルを］次コイルとして、２次コイルにネオン管が接続
された漏洩トランスが用いられる。"Means for Solving the Problem" According to the present invention, an AC type a voltage is full-wave rectified by a full-wave rectifier circuit, and a DC power supply including the full-wave rectifier circuit is connected in parallel via a switching element between both ends of the DC power supply. The resonant circuit is connected
A voltage detection circuit is connected between both ends of the full-wave rectifier circuit, and outputs a pulse signal with a pulse width synchronized with the frequency of the power supply according to the input voltage.The operation of the signal generation circuit is controlled by the pulse signal, and the signal A switching element is ON/OFF controlled by the output signal of the generating circuit, and a leakage transformer is used in which the coil of the resonant circuit is used as a secondary coil and a neon tube is connected to the secondary coil.
漏洩Ｉ・ランスは、定電流特性を有するため、負荷か変
動してもネオン管の明るさが変動することはない。また
、入力電圧の変動に対しては、前記信号発生回路の発振
か前記パルス信号によって制御され、ネオン管の明るさ
が一定に保たれる。負荷の変動や入力の変動に対して影
響を受けることなく明るさを均一にできるだけでなく、
高調波の発生をおさえ良好な点灯特性か維持され、構成
が簡単であり、小型で安価に作ることができる。Since the leakage lance has constant current characteristics, the brightness of the neon tube will not change even if the load changes. Further, the brightness of the neon tube is kept constant with respect to fluctuations in the input voltage by controlling the oscillation of the signal generating circuit or the pulse signal. Not only can brightness be made uniform without being affected by load fluctuations or input fluctuations, but
It suppresses the generation of harmonics, maintains good lighting characteristics, has a simple configuration, and can be made small and inexpensive.
「実施例」
第１１ｍはこの発明によるネオン点灯装置の一実施例を
示すものである。商用型ｒ１．１１の出力は、全波整流
回路１５に供給され、全波整流回路１５の出力は、電圧
検出回路３１に供給されると共にダイオード３２を介し
てコンデンサ１６に供給される。全波整流回路１５およ
びダイオード３２、コンデンサ１６により直流電源３３
が構成される。``Example'' No. 11m shows an example of the neon lighting device according to the present invention. The output of the commercial type r1.11 is supplied to a full-wave rectifier circuit 15, and the output of the full-wave rectifier circuit 15 is supplied to a voltage detection circuit 31 and a capacitor 16 via a diode 32. DC power supply 33 with full wave rectifier circuit 15, diode 32, and capacitor 16
is configured.
直流電源３３の両端間にスイッチング素子としてのパワ
ーＭＯ５ｆｒＥＴ ３４を介して並列共振回路３５が接
続される。ＦＩＥＴ ３４は、信号発生回路３Ｇの信号
によりＯＮ・ＯＦＦ制御される。A parallel resonant circuit 35 is connected between both ends of the DC power supply 33 via a power MO5frET 34 as a switching element. The FIET 34 is ON/OFF controlled by a signal from the signal generation circuit 3G.
電圧検出回路３１は、全波整流回路１５の出力電圧を検
出するものでその一例を第２図に示す。The voltage detection circuit 31 detects the output voltage of the full-wave rectifier circuit 15, and an example thereof is shown in FIG.
全波整流回路１５の両端にダイオード３７を介して抵抗
器３８．３９が接続され、全波整流回路１５の出力電圧
は、抵抗器３８．３９により、分圧され、コンデンサ４
１によって平滑される。この電圧値は、オペアンプ４２
により積分、増幅される。その出力波形を第３図Ｃに示
す。また全波整流回路１５０両端には、抵抗器４３．４
４が接続され、余波整流回路１５の出力電圧を分圧して
いる。この分圧された電圧値■２と前記オペアンプ４２
の出力電圧■１とがコンパレータ４５により比較される
。コンパレータ４５の出力は■２〉■１の期間は高レベ
ルとなりＶ２＜Ｖ、の期間では低レベルとなる。Resistors 38 and 39 are connected to both ends of the full-wave rectifier circuit 15 via a diode 37, and the output voltage of the full-wave rectifier circuit 15 is divided by the resistors 38 and 39, and the output voltage of the full-wave rectifier circuit 15 is divided by the resistors 38 and 39.
smoothed by 1. This voltage value is the operational amplifier 42
It is integrated and amplified by The output waveform is shown in FIG. 3C. In addition, resistors 43.4 are connected to both ends of the full-wave rectifier circuit 150.
4 is connected to divide the output voltage of the aftermath rectifier circuit 15. This divided voltage value ■2 and the operational amplifier 42
The comparator 45 compares the output voltage ■1 with the output voltage ■1. The output of the comparator 45 is at a high level during the period (2>1) and at a low level during the period V2<V.
このコンパレータ４５の出力の波形を第３図りに示す。The waveform of the output of this comparator 45 is shown in Figure 3.
これは、交流電源１１の周波数の半サイクルに同期して
おり、半サイクル毎に１パルスとなって出力される。ま
たこのパルスは、入力端子の電圧値に応じたパルス幅に
制御されるものである。今電源電圧が一ヒ昇したとする
と、前述のオペアンプ４２の出力■１と抵抗器４４の電
圧■２はそれぞれ上昇するか、オペアンプ４２の出力■
１Ｌｌ、平滑された直流であり、オペアンプ４２により
増幅されるため■１は■２に比へて上昇率が大きい。こ
のためコンパレータ４５の出力のパルス幅は狭くなる。This is synchronized with a half cycle of the frequency of the AC power supply 11, and is output as one pulse every half cycle. Further, this pulse is controlled to have a pulse width depending on the voltage value of the input terminal. Assuming that the power supply voltage increases by a moment, either the output ■1 of the operational amplifier 42 and the voltage ■2 of the resistor 44 will rise, or the output ■2 of the operational amplifier 42 will increase.
1Ll is a smoothed direct current and is amplified by the operational amplifier 42, so the rate of increase in (1) is greater than in (2). Therefore, the pulse width of the output of the comparator 45 becomes narrower.
次に電源電圧が下った場合は、前述とは逆にコンパレー
ク４５の出力のパルス幅は広くなる。Next, when the power supply voltage drops, the pulse width of the output of the comparator 45 becomes wider, contrary to the above.
電圧検出回路３１の出力は信号発生回路３６に接続され
るが、この電圧検出回路３１の出力パルスは、発振回路
である信号発生回路３６の発振の起動・停止を制御する
。電圧検出回路３１の出力が高レベルの時は、発振を持
続し、低レベル、の時は、発振を停止する。ずなわち電
源の周波数の半→ノーイクル内において、発振が持続す
る部分と停止する部分とが、入力電圧値によって負荷で
あるネオン管の明るさが一定になる様に制御されるもの
である。また電圧検出回路３１の可変抵抗器４６は、オ
ペアンプ４２の増幅率を調整するもので、入力端子の変
動に対してネオン管の明るさが一定になる様に調整する
。また抵抗器４７はコンパレーク４５にヒステリシスを
持たせるものであり、発振の起動・停止の際のチャタリ
ングを防止するものである。The output of the voltage detection circuit 31 is connected to a signal generation circuit 36, and the output pulse of the voltage detection circuit 31 controls starting and stopping of oscillation of the signal generation circuit 36, which is an oscillation circuit. When the output of the voltage detection circuit 31 is at a high level, the oscillation is continued, and when the output is at a low level, the oscillation is stopped. That is, within half the frequency of the power supply → no cycle, the portion where oscillation continues and the portion where oscillation stops are controlled so that the brightness of the neon tube, which is the load, is constant depending on the input voltage value. Further, the variable resistor 46 of the voltage detection circuit 31 is used to adjust the amplification factor of the operational amplifier 42 so that the brightness of the neon tube remains constant despite fluctuations in the input terminal. Further, the resistor 47 provides hysteresis to the comparator 45, and prevents chattering when starting and stopping oscillation.
この電圧検出回路３１は、検出電圧値が大幅に大きくな
った時には、出力は完全に低レベルとなり、発振を完全
に停止させてしまう。つまり過電圧が印可された場合、
装置を停止させることができるものである。このように
この発明は明るさを−・定にする制御装置において、電
源の周波数の半サイクル毎の点）成をくり返すものであ
るか、人間がこの点滅をみた場合は、点滅となっては見
えず連続した点灯状態に見えるものである。またこの制
御装置においては、制御によって高調波の成分が増加す
ることなく安定した点灯が維持できるものである。信号
発生回路３６の一例を第４図に示ず。信号発生回路３６
は発振回路でデュティザイクル約５０％の方形波を出力
する。この周波数は５〜２０ｋｌｌｚ程度となる。When the detected voltage value becomes significantly large, the voltage detection circuit 31 outputs a completely low level and completely stops oscillation. In other words, if overvoltage is applied,
It is possible to stop the device. In this way, the present invention is a control device that keeps the brightness constant, and is capable of repeating a point every half cycle of the frequency of the power supply, or if a human sees this blinking, it will become blinking. is not visible and appears to be continuously lit. Further, in this control device, stable lighting can be maintained without increasing harmonic components through control. An example of the signal generation circuit 36 is not shown in FIG. Signal generation circuit 36
is an oscillation circuit that outputs a square wave with a duty cycle of about 50%. This frequency is about 5 to 20 kllz.
「発明の効果」
この発明のネオン点灯装置は、ト記した構成であるので
入力端子の電圧値に応じて電源の周波数の半サイクル毎
に点滅させている。従ってこの装置でネオン管を点灯さ
せた場合、入力電圧の大きさに影響されることなく、均
一の明るさで点灯できる。またこの装置においては、ス
イッチング素子が１つであるため発熱が少なく、回路構
成を複雑にすることなく構成できるため、小型、軽量に
まとめることができ、安価に市場に提供できる。"Effects of the Invention" Since the neon lighting device of the present invention has the configuration described above, it blinks every half cycle of the frequency of the power supply according to the voltage value of the input terminal. Therefore, when a neon tube is lit with this device, it can be lit with uniform brightness without being affected by the magnitude of the input voltage. Moreover, since this device has only one switching element, it generates less heat, and the circuit structure can be configured without complicating it, so it can be made compact and lightweight, and can be provided to the market at low cost.
また、高調波成分を増加させることがないため安定した
ネオン管の点灯が維持できる。Furthermore, since harmonic components are not increased, stable lighting of the neon tube can be maintained.
更に、入力電圧が異常に高くなった場合は、装置が停止
するため、入力の異常に対して保護ができる。Furthermore, since the device stops if the input voltage becomes abnormally high, protection against input abnormalities can be achieved.
第１図はこの発明によるネオン点灯装置の一例を示す接
続図、第２図は、電圧検出回路３１の具体例を示ず接続
図、第３図は、各部の電圧波形を示す図、第４図は、信
号発生回路３６の具体例を示す接続図、第５図及び第６
図はそれぞれ従来のネオン点灯装置を示す接続図である
。FIG. 1 is a connection diagram showing an example of a neon lighting device according to the present invention, FIG. 2 is a connection diagram without showing a specific example of the voltage detection circuit 31, FIG. 5 and 6 are connection diagrams showing specific examples of the signal generation circuit 36.
Each figure is a connection diagram showing a conventional neon lighting device.
Claims (1)
グ素子を介して接続された並列共振回路と、 その並列共振回路のコイルを一次コイルとし、二次コイ
ルにネオン管が接続された漏洩トランスと、 上記全波整流回路の出力側に接続され、上記交流電源の
周波数の半サイクル毎に、入力電圧値に応じたパルス幅
をもつパルス信号を発生する電圧検出回路と、 その電圧検出回路の出力パルスにより信号の発生が制御
され、上記スイッチング素子をオン・オフする信号を発
生する信号発生回路とを具備するネオン点灯装置。(1) A full-wave rectifier circuit that performs full-wave rectification of AC power supply voltage, a parallel resonant circuit connected via a switching element between both ends of the DC power supply including the full-wave rectifier circuit, and a coil of the parallel resonant circuit. A leaky transformer has a primary coil and a neon tube is connected to the secondary coil, and is connected to the output side of the full-wave rectifier circuit, which generates a pulse width according to the input voltage value every half cycle of the frequency of the AC power source. A neon lighting device comprising: a voltage detection circuit that generates a pulse signal having a voltage detection circuit; and a signal generation circuit that generates a signal that turns on and off the switching element, the signal generation being controlled by the output pulse of the voltage detection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63111197A JPH0820855B2 (en) | 1988-05-06 | 1988-05-06 | Neon lighting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63111197A JPH0820855B2 (en) | 1988-05-06 | 1988-05-06 | Neon lighting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01280792A true JPH01280792A (en) | 1989-11-10 |
| JPH0820855B2 JPH0820855B2 (en) | 1996-03-04 |
Family
ID=14554960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63111197A Expired - Fee Related JPH0820855B2 (en) | 1988-05-06 | 1988-05-06 | Neon lighting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0820855B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008198417A (en) * | 2007-02-09 | 2008-08-28 | Ushio Inc | Discharge lamp lighting device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61270795A (en) * | 1985-05-27 | 1986-12-01 | ロ−ム株式会社 | Driving of light emitting element |
| JPS6290899A (en) * | 1985-10-16 | 1987-04-25 | 三菱電機株式会社 | Electric source for microwave discharge light source |
| JPS62246093A (en) * | 1986-04-18 | 1987-10-27 | 松下電器産業株式会社 | Display driver |
-
1988
- 1988-05-06 JP JP63111197A patent/JPH0820855B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61270795A (en) * | 1985-05-27 | 1986-12-01 | ロ−ム株式会社 | Driving of light emitting element |
| JPS6290899A (en) * | 1985-10-16 | 1987-04-25 | 三菱電機株式会社 | Electric source for microwave discharge light source |
| JPS62246093A (en) * | 1986-04-18 | 1987-10-27 | 松下電器産業株式会社 | Display driver |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008198417A (en) * | 2007-02-09 | 2008-08-28 | Ushio Inc | Discharge lamp lighting device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0820855B2 (en) | 1996-03-04 |
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| R250 | Receipt of annual fees |
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| LAPS | Cancellation because of no payment of annual fees |