CN2515920Y - Light-adjusting high frequency illumianting device for fluorescent lamp - Google Patents

Light-adjusting high frequency illumianting device for fluorescent lamp Download PDF

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Publication number
CN2515920Y
CN2515920Y CN01271232U CN01271232U CN2515920Y CN 2515920 Y CN2515920 Y CN 2515920Y CN 01271232 U CN01271232 U CN 01271232U CN 01271232 U CN01271232 U CN 01271232U CN 2515920 Y CN2515920 Y CN 2515920Y
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CN
China
Prior art keywords
frequency
fluorescent tube
fluorescent lamp
lamp
inductance
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Expired - Fee Related
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CN01271232U
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Chinese (zh)
Inventor
胡安華
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Mass Technology HK Ltd
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Mass Technology HK Ltd
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Priority to CN01271232U priority Critical patent/CN2515920Y/en
Priority to JP2002244276A priority patent/JP2003157995A/en
Application granted granted Critical
Publication of CN2515920Y publication Critical patent/CN2515920Y/en
Priority to AU2002365989A priority patent/AU2002365989A1/en
Priority to PCT/EP2002/012905 priority patent/WO2003045119A1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/36—Controlling
    • H05B41/38—Controlling the intensity of light
    • H05B41/39—Controlling the intensity of light continuously
    • H05B41/392—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor
    • H05B41/3921—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations
    • H05B41/3925—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations by frequency variation

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  • Circuit Arrangements For Discharge Lamps (AREA)
  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)

Abstract

Disclosed is a light adjustable high frequency fluorescent lamp lighting device, comprising a frequency adjustable electric source (1) and a fluorescent lamp (2) composed of a lamp (3) and coordinating circuit elements that comprises an inductance L, a capacitance C and a thermistor RT. One end of the inductance L is connected with one of output ends of the electric source; the other end is connected with a cathode <a> point of the lamp (3); the capacitance C and the thermistor RT are connected in parallel and then are connected with the cathode <b> and <d> point of the lamp (3). The utility model is characterized significantly in that the stable light adjusting function is kept under the condition that the coordinating circuit elements of the fluorescent lamp is simplified maximally. The high frequency power source and the light adjustable high frequency fluorescent lamp are two individual products, but also usually can be used in coordination with each other. Therefore the utility model has the advantages of low cost, small size and reliable performance.

Description

Tunable optical formula high-frequency florescent lamp lighting device
Technical field
The utility model relates to a kind of fluorescence lamp lighting device, especially a kind of high frequency electric source that utilizes frequency adjustable carries out light modulation to fluorescent lamp tunable optical formula high-frequency florescent lamp lighting device.
Technical background
At present, in room lighting, various types of fluorescent lamps have appearred, and in many occasions they just progressively replace incandescent lamp to become the main body of room lighting, but up to the present the light modulation of fluorescent lamp also is not well solved, therefore needing under the situation of light modulation, using still that incandescent lamp bulb cooperates with one simple " controllable silicon phase modulation dimmer " and the dimming effect that obtains to be satisfied with.
Occur on the market recently using the product that " controllable silicon phase modulation dimmer " carries out light modulation to compact fluorescent lamp, but that the defective of the fluorescent lamp that this tunable optical is used is a circuit is very complicated that volume is bigger, reliability is low, and cost is high, and therefore this light fixture is difficult to popularize.
Summary of the invention
The purpose of this utility model is to solve the defective that current dimmable fluorescent lamp exists and tunable optical formula high-frequency florescent lamp lighting device that the fluorescent lamp circuit that provides a kind of high frequency electric source and being suitable for by frequency adjustable to carry out light modulation constitutes, and above-mentioned power supply except carrying out can also being widely used in the occasion of not light modulation the light modulation to fluorescent lamp.
The technical scheme that realizes above-mentioned purpose is: a kind of tunable optical formula high-frequency florescent lamp lighting device, the fluorescent lamp (2) that comprises the power supply (1) of frequency adjustable, forms by fluorescent tube (3) and line of engagement circuit component, wherein, the line of engagement circuit component comprises an inductance (L), an electric capacity (C) and a thermistor (RT), one end of described inductance (L) is connected with one of output of power supply, the other end is connected with the negative electrode (a point) of fluorescent tube (3), described electric capacity (C) and thermistor (RT) back in parallel connects with the negative electrode (b, d point) of fluorescent tube (3).
Tunable optical formula high-frequency florescent lamp lighting device as previously discussed, wherein, described electric capacity (C) and thermistor (RT) series connection back connect with the negative electrode (b, d point) of fluorescent tube (3).
Tunable optical formula high-frequency florescent lamp lighting device as previously discussed, wherein, described inductance (L) has two winding (l 1And l 2), a winding (l 1) be connected another winding (l with the negative electrode (a, b point) of fluorescent tube (3) 2) connect with the negative electrode (c, d point) of fluorescent tube (3).
Tunable optical formula high-frequency florescent lamp lighting device as previously discussed, wherein, the induction reactance of described inductance (L) is 1mH～20mH, the capacity of described electric capacity (C) is that the cold resistance of 1nF～20nF and described thermistor (RT) is less than 10K Ω.
Tunable optical formula high-frequency florescent lamp lighting device as previously discussed, wherein, described power supply comprises a filtering and rectification circuit (11), power factor adjustment circuit (12) and a FREQUENCY CONTROL and switching circuit (13), its frequency adjustable scope is 10～200KHZ.
Therefore, because the circuit for fluorescent lamp element in the tunable optical formula high-frequency florescent lamp lighting device of the present utility model has only an inductance (L), an electric capacity (C) and three elements of a thermistor (RT), the fluorescent lamp of this and low frequency power supply, for example have in the compact fluorescent lamp of dozens of circuit element and compare, can find significantly that its circuit element quantity significantly reduces.In addition, for the discrete straight-pipe fluorescent lamp of traditional electric ballast, its independently electric ballast also have the dozens of element, when adopting high frequency supply line, can be reduced to three above-mentioned elements equally; And for the fluorescent lamp of Inductive ballast and starter, also can be reduced to and use the inductance that volume is very little, an electric capacity and a thermistor.According to above-mentioned technical descriptioon as can be known, outstanding feature of the present utility model is that the cooperation circuit and the element of fluorescent lamp can obtain very big simplification, and this makes the cost of high frequency power supply fluorescent lamp reduce greatly, and has volume-diminished, dependable performance can obtain stable dimming function again simultaneously.
Therefore, although the high-frequency florescent lamp of the high frequency electric source of frequency adjustable and tunable optical is two independently products, their uses of working in coordination again usually.Thereby, particularly when the illuminator of forming with the high-frequency florescent lamp of the high frequency electric source of frequency adjustable of the present utility model and the tunable optical that matches, can reach the purpose of stablizing light modulation by the frequency of free adjustment power supply.
The accompanying drawing summary
Fig. 1 is a line principle schematic block diagram of the present utility model;
Fig. 2 is the circuit diagram of the high frequency electric source of frequency adjustable of the present utility model;
Fig. 3 is the connection layout of one of fluorescent lamp of the present utility model and line of engagement circuit component;
Fig. 4 is two a connection layout of fluorescent lamp of the present utility model and line of engagement circuit component;
Fig. 5 is three a connection layout of fluorescent lamp of the present utility model and line of engagement circuit component;
Fig. 6 adopts the schematic block diagram by an application circuit of feeder transmission composition such as power supply of the present utility model and fluorescent lamp.
Detailed description of the invention
See also Fig. 1 to Fig. 3, the fluorescent lamp 2 that the high frequency electric source 1 of tunable optical formula high-frequency florescent lamp lighting device bag one frequency adjustable of the present utility model, is made up of fluorescent tube 3 and line of engagement circuit component, wherein, power supply 1 is an independent device, adjusts a circuit 12 and a FREQUENCY CONTROL and switching circuit 13 by a filtering and rectification circuit 11, a power factor and forms.This power supply be input as mains supply, output then is high-frequency power supply.In order to realize light modulation to fluorescent lamp, be provided with manual turn-knob in the FREQUENCY CONTROL of this device and the switching circuit 13, can regulate the frequency of out-put supply.The working range of frequency is 10KHZ～200KHZ, and (high frequency) voltage of its output is generally 230V, and is identical with the voltage 230V of civil power, but also can be greater than the voltage of civil power.Therefore, the output feeder of the output of described power supply output is identical with the feeder transmission that civil power uses.This is because frequency is higher, is not suitable for using stranded flexible cord.In use, fluorescent lamp is by the common lamp socket that adapts, and inserts high frequency electric source.
The adjustable extent of frequency is 10KHZ～200KHZ, so the feeder line that the output feeder of high frequency electric source should use with civil power be identical, and this is because frequency is higher, is not suitable for using stranded flexible cord.Fluorescent lamp is by the common lamp socket that adapts, and inserts high frequency electric source.
Fluorescent lamp 2 is a tunable optical formula high-frequency florescent lamp, comprises a fluorescent tube 3 and cooperates circuit and element.It and the common different following cooperation circuit that will illustrate and the difference of element of being of fluorescent lamp that are used for civil power, and the fluorescent tube 3 that uses is identical, for example for fluorescent lamps such as the straight pipe type that uses discrete electric ballast or inductance type ballast, annulars, be the electric ballast or the Inductive ballast difference of discrete, and the fluorescent tube of fluorescent lamps such as straight pipe type, annular is identical.Its reason is that adjustable high-frequency fluorescent lamp is suitable for the high-frequency power supply except necessary, also will reach the purpose of light modulation.
Cooperate circuit and element to comprise an inductance L, a capacitor C and a thermistor RT.They can adopt following three kinds of connected modes with fluorescent tube 3:
In cooperating one of circuit and element, described inductance L is single inductance element, one of output of one end and power supply 1 is connected, the other end is connected with the negative electrode a point of fluorescent tube 3, be connected with fluorescent tube 3 negative electrode b, d point after described capacitor C and the thermistor RT parallel connection, in addition, another of the output of power supply 1 is connected with fluorescent tube 3 negative electrode c points.
See also Fig. 4, cooperate circuit and element two in, described inductance L adopts has a main inductance and two winding l 1And l 2Inductance, a winding l 1Be connected another sub-winding l with a, the b point of the negative electrode of fluorescent tube 2Be connected with c, the d point of fluorescent tube, and the cooperation circuit and the element of fluorescent lamp, as the connection between main inductance, capacitor C and thermistor RT, power supply 1 and the fluorescent tube 3 etc. with cooperate one of circuit and element in identical.
The light modulation principle of the lighting device of said structure: the light modulation of fluorescent tube is to reach by the output frequency of regulating power supply.Owing in the circuit element of fluorescent lamp 2, all inserts an inductance L and carry out ballast (referring to Fig. 3), and the induction reactance of inductance L is to raise along with the rising of operating frequency, when induction reactance raises, is supplied to the power of fluorescent tube 3 just to descend, lamp luminescence brightness is descended.Therefore regulate the effect that the frequency that improves out-put supply 1 just can reach light modulation.
The temperature compensation principle of negative electrode during light modulation: fluorescent lamp tube 3 normally adopts hot cathode work, and promptly fluorescent tube its negative electrode when lighting must have certain temperature, has enough thermionic emission abilities to keep.When cathode temperature was lower than the minimum numerical value of requirement, negative electrode just can be subjected to the very big ion bombardment of energy and make the very fast damage of negative electrode.When in light modulation, because the power output of fluorescent tube descends, cause the temperature of negative electrode to descend, the cathode temperature of requirement must appear being lower than, and therefore carrying out temperature-compensating is the requisite measure that guarantees lamp tube service life.For this reason, in the utility model, can make tube cathode obtain sufficient temp during fluorescent tube 3 work and mainly contain two sources, the one, negative electrode is subjected to the bombardment of ion and generates heat during fluorescent tube 3 discharges; The 2nd, the electric current target heating of the capacitor C of flowing through.Referring to Fig. 3, when light modulation,, the capacitive reactance of capacitor C is descended, thereby the electric current of the C that flows through just increase because frequency is the variation of rising, so just compensated because the cathode temperature defect of insufficient problem that the decline of fluorescent tube 3 power brings.
For obtaining more temperature-compensating, we have designed circuit shown in Figure 4.In the device L of the ballast inductance of circuit, two coupling winding l have been increased 1And l 2, insert two negative electrodes of fluorescent tube respectively.When light modulation, because the rising of frequency, the induction reactance of ballast inductance rises, and promptly the voltage on the inductance increases, thereby the voltage of sensing the coupling winding also rises, and makes the temperature of negative electrode obtain more compensation like this.
See also Fig. 5, cooperate circuit and element three in, the connection between inductance L, power supply 1 and fluorescent tube 3 with cooperate one of circuit and element in identical, different is that series connection then is connected with negative electrode b, the d point of fluorescent tube 3 described capacitor C with thermistor RT.
In enforcement circuit application of the present utility model, can form lighting device or system by a power supply and one or more fluorescent lamp, for example the fluorescent lamp that inserts among Fig. 6 is 4, they connect to form by feeder transmission can be to the transmission line of fluorescent tube light modulation.At this moment, no matter the quantity of the fluorescent lamp that inserts how much, can not just can above adjustable high-frequency florescent lamp power supply output rated power so long as insert the summation power of lamp.But, more when the fluorescent tube quantity that inserts, when turning on light together, an instantaneous heavy load can occur and impact power supply.For alleviating this impact, we have designed the circuit as above tunable optical high-frequency florescent lamp shown in Figure 5.From the circuit of Fig. 5, see, when the transient flow of turning on light will be subjected to the restriction of thermistor RT through the electric current of capacitor C, thereby reduce the moment impact electric current.Reduce the measure of when turning on light high frequency electric source being impacted.
Cooperate one of circuit and element to three in, the induction reactance of inductance L is 1mH～20mH, capacitor C D capacity is that the cold resistance of 1nF～20nF and thermistor RT is less than 10K Ω.
Now enumerate an application embodiment of a lighting device, wherein, adopting the output rated power of a frequency adjustable is the high frequency electric source of 100W, by 10 9W power E27 type standard fluorescent lamp fluorescent tubes of 15 meters long twin leads access in parallel evenly distributedly.The circuit of described high frequency electric source can be made of more existing circuit parts, as shown in Figure 2.In the FREQUENCY CONTROL of the right part of figure and switching circuit 13 a variable potentiometer R19 is arranged, it is the frequency that is used to adjust out-put supply.The cooperation circuit of tunable optical high-frequency florescent lamp and element adopt dress system shown in Figure 5 to form.Then, carry out performance measurement to inserting fluorescent tube.
The result who measures is as follows:
1, output high frequency electric source voltage is 220V～350V;
2, the fundamental frequency of output high frequency electric source voltage is 40KHZ;
3, frequency is changed to 40～90KHZ during light modulation
4, the brightness amplitude of variation 100%～20% of " tunable optical high-frequency florescent lamp ";
5, in whole light modulation process, fluorescent lamp is lighted stable, does not have the phenomenon that flicker occurs, and negative electrode keeps enough temperature, thereby does not influence the life-span of lamp;
6, the power factor of system is greater than 0.95 in the whole light modulation process;
7, device meets the requirement of EN55015 electromagnetic interference.

Claims (5)

1. tunable optical formula high-frequency florescent lamp lighting device, the fluorescent lamp (2) that comprises the power supply (1) of frequency adjustable, forms by fluorescent tube (3) and line of engagement circuit component, it is characterized in that: the line of engagement circuit component comprises an inductance (L), an electric capacity (C) and a thermistor (RT), one end of described inductance (L) is connected with one of output of power supply, the other end is connected with the negative electrode (a point) of fluorescent tube (3), described electric capacity (C) and thermistor (RT) back in parallel connects with the negative electrode (b, d point) of fluorescent tube (3).
2. tunable optical formula high-frequency florescent lamp lighting device as claimed in claim 1 is characterized in that: described electric capacity (C) and thermistor (RT) series connection back connect with the negative electrode (b, d point) of fluorescent tube (3).
3. tunable optical formula high-frequency florescent lamp lighting device as claimed in claim 1, it is characterized in that: described inductance (L) has two winding (l 1And l 2), a winding (l 1) be connected another winding (l with the negative electrode (a, b point) of fluorescent tube (3) 2) connect with the negative electrode (c, d point) of fluorescent tube (3).
4. as the described tunable optical formula of the arbitrary claim of claim 1 to 3 high-frequency florescent lamp lighting device, it is characterized in that: the induction reactance of described inductance (L) is 1mH～20mH, and the capacity of described electric capacity (C) is that the cold resistance of 1nF～20nF and described thermistor (RT) is less than 10K Ω.
5. as the described tunable optical formula of the arbitrary claim of claim 1 to 3 high-frequency florescent lamp lighting device, it is characterized in that: described power supply comprises a filtering and rectification circuit (11), power factor adjustment circuit (12) and a FREQUENCY CONTROL and switching circuit (13), and its frequency adjustable scope is 10～200KHZ.
CN01271232U 2001-11-21 2001-11-21 Light-adjusting high frequency illumianting device for fluorescent lamp Expired - Fee Related CN2515920Y (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN01271232U CN2515920Y (en) 2001-11-21 2001-11-21 Light-adjusting high frequency illumianting device for fluorescent lamp
JP2002244276A JP2003157995A (en) 2001-11-21 2002-08-23 Lighting device with light-controllable high frequency fluorescent lamp
AU2002365989A AU2002365989A1 (en) 2001-11-21 2002-11-18 Luminosity-adjustable high frequency fluorescent lamp illuminating device
PCT/EP2002/012905 WO2003045119A1 (en) 2001-11-21 2002-11-18 Luminosity-adjustable high frequency fluorescent lamp illuminating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN01271232U CN2515920Y (en) 2001-11-21 2001-11-21 Light-adjusting high frequency illumianting device for fluorescent lamp

Publications (1)

Publication Number Publication Date
CN2515920Y true CN2515920Y (en) 2002-10-09

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CN01271232U Expired - Fee Related CN2515920Y (en) 2001-11-21 2001-11-21 Light-adjusting high frequency illumianting device for fluorescent lamp

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CN (1) CN2515920Y (en)
AU (1) AU2002365989A1 (en)
WO (1) WO2003045119A1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5757144A (en) * 1980-08-14 1998-05-26 Nilssen; Ole K. Gas discharge lamp ballasting means
US5406174A (en) * 1992-12-16 1995-04-11 U. S. Philips Corporation Discharge lamp operating circuit with frequency control of dimming and lamp electrode heating
US5821699A (en) * 1994-09-30 1998-10-13 Pacific Scientific Ballast circuit for fluorescent lamps
DE4441140A1 (en) * 1994-11-18 1996-05-30 Hilite Lighting And Electronic Dimming circuit for fluorescent lamps
US5612595A (en) * 1995-09-13 1997-03-18 C-P-M Lighting, Inc. Electronic dimming ballast current sensing scheme

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JP2003157995A (en) 2003-05-30
AU2002365989A1 (en) 2003-06-10
WO2003045119A1 (en) 2003-05-30
WO2003045119B1 (en) 2004-07-08

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Granted publication date: 20021009

Termination date: 20101121