CN1045241C - Light output stabilizer for fluorescent lamps - Google Patents

Light output stabilizer for fluorescent lamps Download PDF

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CN1045241C
CN1045241C CN96103302A CN96103302A CN1045241C CN 1045241 C CN1045241 C CN 1045241C CN 96103302 A CN96103302 A CN 96103302A CN 96103302 A CN96103302 A CN 96103302A CN 1045241 C CN1045241 C CN 1045241C
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circuit
bias
lamp
lamp tube
light output
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CN1160979A (en
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陈燧宗
吴黎明
关侃胜
李丽玲
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Industrial Technology Research Institute ITRI
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Abstract

A light output stabilizing apparatus for a fluorescent lamp, comprising: the lamp tube, an electronic stabilizer and a DC bias compensation circuit, wherein the DC bias compensation circuit is respectively connected with the lamp tube and the electronic stabilizer and uses the generated DC power supply and the high-frequency high-voltage AC power supply generated by the electronic stabilizer to be mixed and input into the lamp tube so as to maintain stable lamp light output; when the light output power of the lamp tube is reduced to half or less, the DC power supply in the hybrid power supply provides a DC bias compensation effect. Therefore, the light output stability of the fluorescent lamp can be improved, the serpentine phenomenon of the fluorescent lamp is eliminated, and a high-quality light output stabilizing device of the fluorescent lamp is provided.

Description

日光灯的光输出稳定装置Light output stabilizer for fluorescent lamps

本发明涉及一种日光灯的光输出稳定装置，特别涉及一种能克服日光灯的蛇纹现象，且可用于调光式电子安定器的日光灯的光输出稳定装置。The invention relates to a light output stabilizing device of a fluorescent lamp, in particular to a light output stabilizing device of a fluorescent lamp which can overcome the serpentine phenomenon of the fluorescent lamp and can be used for a dimming electronic ballast.

目前市面上，日光灯普遍使用于各种空间的照明灯具上；传统日光灯为了调整其亮度，往往装置有调光式电子安定器，藉调光式电子安定器来调整其灯光亮度。而传统日光灯，若将灯管发光亮度调降至一半或更低时，日光灯管的灯光常会出现不稳定现象，而且会有一圈圈的蛇纹出现，不但调光效果不佳，且灯光闪烁不定的现象对于人的眼睛有所伤害；因此，如何改善日光灯的光输出不稳现象已为目前亟需解决的问题。Currently on the market, fluorescent lamps are widely used in lighting fixtures in various spaces; traditional fluorescent lamps are often equipped with dimming electronic ballasts to adjust the brightness of the lights. For traditional fluorescent lamps, if the brightness of the fluorescent tube is reduced to half or lower, the light of the fluorescent tube will often appear unstable, and there will be circles of snake patterns appearing, not only the dimming effect is not good, but also the light flickers indefinitely The phenomenon is harmful to human eyes; therefore, how to improve the unstable light output of fluorescent lamps has become an urgent problem to be solved at present.

本发明的目的是为克服上述现有技术的缺陷，向使用者提供一种能够消除日光灯的蛇纹现象，改善其光输出不稳定现象的日光灯光输出稳定装置。The object of the present invention is to overcome the above-mentioned defects of the prior art and provide users with a fluorescent light output stabilizing device which can eliminate the serpentine phenomenon of the fluorescent lamp and improve the unstable light output of the fluorescent lamp.

实现本发明目的的技术方案为，本发明日光灯光输出稳定装置的组成包括：The technical solution for realizing the purpose of the present invention is that the composition of the daylight light output stabilizing device of the present invention includes:

一灯管；一电子安定器，提供给灯管恒定的高频电压；及a lamp; an electronic ballast to provide a constant high-frequency voltage to the lamp; and

一直流偏压补偿电路，分别连接灯管与电子安定器；A DC bias compensation circuit, respectively connected to the lamp tube and the electronic ballast;

经由上述装置，以直流偏压补偿电路产生的直流电源及电子安定器产生的高频高压交流电源混合的电源，共同输入于灯管而维持稳定的灯光输出；在当灯管的光输出功率调降至一半或更弱时，该混合电源中的直流电源便提供一直流偏压补偿的效果。Through the above-mentioned device, the DC power source generated by the DC bias compensation circuit and the high-frequency high-voltage AC power source generated by the electronic ballast are mixed into the lamp tube to maintain a stable light output; when the light output power of the lamp tube is adjusted Down to half or less, the DC power in this hybrid provides a DC bias compensation effect.

本发明的电子安定器包括有一交流转换直流电路、一功率因数修正电路、一谐振转换电路、一灯管启动电路、及一调光电路。本发明交流转换直流电路，为一滤波整流电路，必要时交流转换直流电路还可加入一抗电磁干扰滤波电路，用以滤除电源的杂讯。交流电输入经交流转换直流电路整流为直流电源，并经功率因数修正电路提高电力品质后，利用谐振转换电路将直流电源转换为高频交流电源，此后该高频交流电源分别进入灯管启动电路及直流偏压补偿电路；其中一路高频交流电源经灯管启动电路变为高压高频交流电源，而另一路高频交流源经直流偏压补偿电路变为直流电源，然后两路电源混合驱动灯管；同时灯管可经由调光电路调整其亮度。The electronic ballast of the present invention includes an AC conversion DC circuit, a power factor correction circuit, a resonant conversion circuit, a lamp starting circuit, and a dimming circuit. The AC conversion DC circuit of the present invention is a filtering and rectifying circuit. If necessary, an anti-electromagnetic interference filter circuit can be added to the AC conversion DC circuit to filter out the noise of the power supply. The AC input is rectified into DC power by the AC conversion DC circuit, and after the power quality is improved by the power factor correction circuit, the DC power is converted into high-frequency AC power by using the resonant conversion circuit, and then the high-frequency AC power enters the lamp start circuit and DC bias compensation circuit; one of the high-frequency AC power sources is converted into a high-voltage high-frequency AC power source through the lamp startup circuit, and the other high-frequency AC source is converted into a DC power source through the DC bias compensation circuit, and then the two power sources are mixed to drive the lamp Tube; at the same time, the brightness of the lamp can be adjusted through the dimming circuit.

本发明的直流偏压补偿电路，其直流偏压补偿的方式依所使用的电子零件及动作方式的不同，包括有固定式直流偏压、交换式直流偏压、及选择式直流偏压三种方式；其动作原理皆是在电子安定器的输出端与灯管两端并接直流偏压的正极及负极，使在灯管上有高频高压交流电源及低压直流电源，以交直流混成的电源共同输入于灯管维持稳定的灯光输出；当灯管的光输出功率调降至一半或更弱时，此混合电源中的直流电源便提供一直流偏压补偿的效果。利用此一直流偏压补尝电路，改善灯管的光输出不稳定现象，消除灯管光输出的蛇纹现象，提高灯管的发光效率。In the DC bias compensation circuit of the present invention, the DC bias compensation method depends on the electronic components used and the action modes, including three types: fixed DC bias, switching DC bias, and selective DC bias mode; its action principle is to connect the positive and negative poles of the DC bias voltage at the output end of the electronic ballast and the two ends of the lamp tube, so that there are high-frequency high-voltage AC power supply and low-voltage DC power supply on the lamp tube, which are mixed with AC and DC. The power supply is common input to the lamp tube to maintain a stable light output; when the light output power of the lamp tube is reduced to half or weaker, the DC power supply in this hybrid power supply provides a DC bias compensation effect. The direct current bias compensation circuit is used to improve the unstable phenomenon of the light output of the lamp tube, eliminate the serpentine phenomenon of the light output of the lamp tube, and improve the luminous efficiency of the lamp tube.

为此，本发明不仅改善传统日光灯光输出不稳定的缺陷，且增加了调光的稳定范围，显著改进日光灯的光输出。Therefore, the invention not only improves the defect of unstable light output of traditional fluorescent lamps, but also increases the stable range of dimming, and significantly improves the light output of fluorescent lamps.

下面结合附图和实施例对本发明进行详细说明。其中，The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments. in,

图1为本发明的方框图。Figure 1 is a block diagram of the present invention.

图2A为本发明的固定式直流偏压电路图(单灯管)。Fig. 2A is a fixed DC bias circuit diagram (single lamp) of the present invention.

图2B为本发明的固定式直流偏压电路图(双灯管)。Fig. 2B is a fixed DC bias circuit diagram (double lamps) of the present invention.

图3A为本发明的交换式直流偏压电路图(单灯管)。FIG. 3A is a circuit diagram of a switching DC bias voltage (single lamp) of the present invention.

图3B为本发明的交换式直流偏压电路图(双灯管)。FIG. 3B is a circuit diagram of a switching DC bias voltage (dual lamps) of the present invention.

图4A为本发明的选择式直流偏压电路图(单灯管)。FIG. 4A is a selective DC bias circuit diagram (single lamp) of the present invention.

图4B为本发明的选择式直流偏压电路图(双灯管)。FIG. 4B is a selective DC bias circuit diagram (double lamps) of the present invention.

图中的符号为：10  为交流转换直流电路          41  为固定式直流偏压电路11  为抗电磁干扰滤波电路        411 为二极管12  为滤波整流电路              412 为电解电容20  为电子安定器                42  交换式直流偏压电路21  为功率因数修正电路          421 为二极管22  为谐振转换电路              422 为电解电容23  为灯管启动电路              43  为选择式直流偏压电路24  为调光电路                  431 为二极管30  为灯管                      432 为电解电容40  为直流偏压补偿电路          433 为晶体管The symbols in the figure are: 10 is an AC conversion DC circuit 41 is a fixed DC bias circuit 11 is an anti-electromagnetic interference filter circuit 411 is a diode 12 is a filter rectifier circuit 412 is an electrolytic capacitor 20 is an electronic ballast 42 is a switching DC bias Circuit 21 is the power factor correction circuit 421. The diode 22 is the resonant conversion circuit 422. The electrolytic capacitance 23 is the lamp tube starting circuit 43. is a DC bias compensation circuit 433 is a transistor

图1所示为本发明的灯光输出稳定装置的方框图，包括有：一灯管30、一电子安定器20、及一直流偏压补偿电路40。FIG. 1 is a block diagram of the light output stabilizing device of the present invention, which includes: a lamp tube 30 , an electronic ballast 20 , and a DC bias compensation circuit 40 .

该灯管30；the lamp tube 30;

该电子安定器20，提供给灯管30一恒定的高频电压；及The electronic ballast 20 provides a constant high-frequency voltage to the lamp tube 30; and

该直流偏压补偿电路40，分别连接该灯管30与该电子安定器20；The DC bias compensation circuit 40 is connected to the lamp tube 30 and the electronic ballast 20 respectively;

经由上述装置，以直流偏压补偿电路40产生的直流电源以及电子安定器20产生的高频高压交流电源混成的电源，共同输入于灯管30而维持稳定的灯光输出；在当灯管30的光输出功率调降至一半或更弱时，该混合电源中的直流电源便提供一直流偏压补偿的效果。Through the above-mentioned device, the DC power generated by the DC bias compensation circuit 40 and the high-frequency high-voltage AC power generated by the electronic ballast 20 are combined to input to the lamp tube 30 to maintain a stable light output; The DC power supply in this hybrid provides a DC bias compensation effect when the optical output power is dimmed down to half or less.

图1中的电子安定器20，包括有：一交流转换直流电路10、一功率因数修正电路21、一谐振转换电路22、一灯管启动电路23、及一调光电路24。而图1中的交流转换直流电路10为一滤波整流电路12，该交流转换直流电路10必要时还可加入一抗电磁干扰滤波电路11，用以滤除电源的杂讯。The electronic ballast 20 in FIG. 1 includes: an AC conversion DC circuit 10 , a power factor correction circuit 21 , a resonant conversion circuit 22 , a lamp starting circuit 23 , and a dimming circuit 24 . The AC-to-DC circuit 10 in FIG. 1 is a filter rectifier circuit 12. If necessary, an anti-electromagnetic interference filter circuit 11 can be added to the AC-to-DC circuit 10 to filter out noise from the power supply.

图1所示，交流电输入经交流转换直流电路10整流为直流电源后，再经功率因数修正电路21提高电力品质，利用谐振转换电路22将直流电源转换为高频交流电源，此后该高频交流电源分别进入灯管启动电路23及直流偏压补偿电路40，其中一路高频交流电源经灯管启动电路23变为高压高频交流电源，而另一路高频交流电源经直流偏压补偿电路40变为直流电源，然后两路电源混合驱动灯管30；而灯管30同时可经由调光电路24调整其亮度。As shown in Figure 1, after the AC input is rectified into DC power by the AC conversion DC circuit 10, the power quality is improved by the power factor correction circuit 21, and the DC power is converted into a high-frequency AC power by the resonant conversion circuit 22, and then the high-frequency AC The power supply respectively enters the lamp starting circuit 23 and the DC bias compensation circuit 40, wherein one high-frequency AC power supply is converted into a high-voltage high-frequency AC power supply through the lamp starting circuit 23, and the other high-frequency AC power supply passes through the DC bias compensation circuit 40 It becomes a DC power supply, and then the two power sources mix to drive the lamp tube 30 ; and the brightness of the lamp tube 30 can be adjusted through the dimming circuit 24 at the same time.

本发明光输出稳定装置，是在电子安定器20的输出端与灯管30两端中的任一端并接一直流偏压补偿电路40，利用此一直流偏压补偿电路40，改善灯管的光输出不稳定现象，消除灯管光输出的蛇纹现象，提高灯管的发光效率。The optical output stabilizing device of the present invention is to connect a DC bias compensating circuit 40 in parallel with either end of the output end of the electronic ballast 20 and the two ends of the lamp tube 30, and utilize this DC bias compensating circuit 40 to improve the performance of the lamp tube. Unstable light output, eliminate the serpentine phenomenon of the light output of the lamp, and improve the luminous efficiency of the lamp.

如图2A、B至图4A、B所示，其使用的直流偏压补偿电路40，依照所使用电子零件及动作方式的不同可分为As shown in Fig. 2A, B to Fig. 4A, B, the DC bias compensation circuit 40 used in it can be divided into

(1)固定式直流偏压电路41、(1) Fixed DC bias circuit 41,

(2)交换式直流偏压电路42、及(3)选择式直流偏压电路43三种型式。There are three types of (2) switching DC bias circuit 42 and (3) selective DC bias circuit 43 .

其所使用电子零件及动作方式，详述如下：The electronic components and action methods used are described in detail as follows:

(1)固定式直流偏压电路41：(1) Fixed DC bias circuit 41:

如图2A、B所示，A为单支灯管30、B为双支灯管30，将安定器20初级耦合至次级的正弦波，经二个二极管411及一个电解电容412做全波整流、滤波成为直流之后，对灯管30做固定一端方式的直流偏压。As shown in Figure 2A and B, A is a single lamp tube 30, B is a double lamp tube 30, the sine wave that couples the primary of the ballast 20 to the secondary, makes a full wave through two diodes 411 and an electrolytic capacitor 412 After being rectified and filtered to become DC, a DC bias voltage is applied to the lamp tube 30 in a way of fixing one end.

(2)交换式直流偏压电路42：(2) Switching DC bias circuit 42:

如图3A、B所示，A为单支灯管30、B为双支灯管30，利用二个二极管421及二个电解电容422对灯管30做直流偏压，当安定器20初级耦合至次级的正弦波，在正半周时，由一组二极管421及电解电容422做整流、滤波后对灯管30的一端做直流偏压；正弦波在负半周时，改换由另一组二极管421及电解电容422做整流、滤波后，对灯管30的另一端做直流偏压；如此便可在灯管30的两端做交换式直流偏压，且不致于使直流偏压仅固定在灯管30的一端，促使该端灯管30较旱老化损坏。As shown in Fig. 3A and B, A is a single lamp tube 30, B is a double lamp tube 30, two diodes 421 and two electrolytic capacitors 422 are used to make a DC bias voltage on the lamp tube 30, when the primary coupling of the ballast 20 The sine wave to the secondary is rectified and filtered by a group of diodes 421 and electrolytic capacitor 422 in the positive half cycle, and then one end of the lamp tube 30 is used for DC bias; the sine wave is replaced by another group of diodes in the negative half cycle. 421 and electrolytic capacitor 422 are rectified and filtered, and the other end of the lamp tube 30 is used as a DC bias voltage; in this way, an exchange-type DC bias voltage can be made at both ends of the lamp tube 30, and the DC bias voltage is not fixed only at One end of the lamp tube 30 causes the lamp tube 30 at this end to be damaged due to drought.

(3)选择式直流偏压电路43：(3) Selective DC bias circuit 43:

如图4A、B所示，A为单支灯管30、B为双支灯管30，将安定器20初级耦合至次级的正弦波利用一个二极管431及一个电解电容432做整流、滤流后、再经由一个有源元件晶体管433，对灯管30在需做直流偏压时才切换，如此便可在调降灯管30的功率时，当出现灯光不稳定(有蛇纹)的情况下，才会对灯管30做选择式直流偏压，以使灯光达到稳定状态。如此做法，不但平常可节省直流偏压电源的供应，且不会影响到灯管30的寿命。As shown in Figure 4A and B, A is a single lamp 30, B is a double lamp 30, the sine wave that couples the primary of the ballast 20 to the secondary is rectified and filtered by a diode 431 and an electrolytic capacitor 432 Finally, through an active element transistor 433, the lamp tube 30 is switched only when a DC bias voltage is required, so that when the power of the lamp tube 30 is lowered, when the light is unstable (serpentine) Only then will the selective DC bias voltage be applied to the lamp tube 30, so that the light can reach a stable state. In this way, not only the supply of DC bias power can be saved normally, but also the service life of the lamp tube 30 will not be affected.

本发明的直流偏压补偿电路40的动作方式，就是在电子安定器20的输出端与灯管30的两端并接直流偏压的正级及负级，所以在灯管30上便有高频高压交流电源及低压直流电源，以交直流混成的电源共同输入于灯管30而维持稳定的灯光输出；在当灯管30的光输出功率调降至一半或更弱时，此混合电源中的直流电源便提供一直流偏压补偿电路40的效果，本发明不仅改善传统日光灯光输出不稳定的缺陷，且增加了调光的稳定范围，显著改进日光灯的光输出。The action mode of the DC bias compensation circuit 40 of the present invention is to connect the positive stage and the negative stage of the DC bias voltage in parallel between the output terminal of the electronic ballast 20 and the two ends of the lamp tube 30, so there is a high voltage on the lamp tube 30. High-frequency high-voltage AC power supply and low-voltage DC power supply, and the AC-DC hybrid power supply is jointly input to the lamp tube 30 to maintain a stable light output; when the light output power of the lamp tube 30 is reduced to half or weaker, the hybrid power supply The DC power supply provides the effect of a DC bias compensation circuit 40. The present invention not only improves the defect of unstable output of traditional fluorescent lamps, but also increases the stable range of dimming, and significantly improves the light output of fluorescent lamps.

Claims (6)

1. A light output stabilizing apparatus for a fluorescent lamp, comprising:
a light tube, a light source and a light source,
an electronic ballast for supplying a constant high-frequency voltage to the lamp, and
a DC bias compensation circuit connected to the lamp tube and the electronic stabilizer respectively;
the electronic stabilizer comprises an alternating current-to-direct current conversion circuit, a power factor correction circuit, a resonance conversion circuit, a lamp tube starting circuit and a dimming circuit; the AC-to-DC conversion circuit is externally connected with an AC power supply, the rectified DC power supply is connected with the power factor correction circuit, the rectified DC power supply is connected with the resonance conversion circuit after the power quality is improved, and the converted high-frequency AC power supply is respectively connected with the lamp tube starting circuit and the DC bias compensation circuit; the high-voltage high-frequency alternating current output of the lamp tube starting circuit and the direct current output of the direct current bias compensation circuit are connected in parallel and are transmitted to two ends of the lamp tube; the dimming circuit is connected between the lamp tube starting circuit and the resonance conversion circuit.
2. A light output stabilizing apparatus of a fluorescent lamp according to claim 1, wherein said ac-dc converting circuit is a filter rectifying circuit or a filter rectifying circuit connected in series with an anti-electromagnetic interference filter circuit.
3. A light output stabilizing apparatus of a fluorescent lamp according to claim 1, wherein said dc bias compensating circuit is a fixed dc bias compensating circuit, a switching dc bias compensating circuit, or a selective dc bias compensating circuit.
4. A light output stabilizing arrangement for a fluorescent lamp as claimed in claim 3, wherein said fixed dc bias compensation circuit is a full wave rectifying and filtering circuit comprising two diodes and an electrolytic capacitor, the input of which is connected to a sine wave output coupled from said ballast primary to the secondary, the fixed dc output of which is connected to the lamp terminals.
5. A light output stabilizing device for fluorescent lamp as claimed in claim 3, wherein said switching dc bias compensation circuit is a two-set half-wave rectifying and filtering circuit composed of two diodes and two electrolytic capacitors, whose inputs are connected to the sine wave output coupled from said ballast primary to the secondary, and whose one-way dc bias output from the one-set half-wave rectifying and filtering circuit is connected to both ends of the lamp tube; and the other reverse direction DC bias output of the other half-wave rectification and filtering circuit is connected to the two ends of the lamp tube.
6. A light output stabilizing arrangement for fluorescent lamps as claimed in claim 3, characterized in that said selective dc bias compensation circuit is constituted by a half-wave rectifier filter consisting of a diode and an electrolytic capacitor connected in series with the selective output of a transistor switch, the input connection of which is coupled from said ballast primary to the sine wave output of the secondary, the selectable dc output of which is connected across the lamp.
CN96103302A 1996-03-28 1996-03-28 Light output stabilizer for fluorescent lamps Expired - Lifetime CN1045241C (en)

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CN96103302A CN1045241C (en) 1996-03-28 1996-03-28 Light output stabilizer for fluorescent lamps

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CN1160979A CN1160979A (en) 1997-10-01
CN1045241C true CN1045241C (en) 1999-09-22

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TWI432096B (en) 2011-12-27 2014-03-21 Ind Tech Res Inst Lamp control system, lamp power saving system and method therefor

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CN85203334U (en) * 1985-08-15 1986-05-07 宋军 Electron ballast for daylight lamp
CN86101777A (en) * 1986-03-21 1987-04-15 王一况 Super efficiency barretter

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CN85203334U (en) * 1985-08-15 1986-05-07 宋军 Electron ballast for daylight lamp
CN86101777A (en) * 1986-03-21 1987-04-15 王一况 Super efficiency barretter

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