CN201682686U - Dimmable fluorescent lamp ballast - Google Patents
Dimmable fluorescent lamp ballast Download PDFInfo
- Publication number
- CN201682686U CN201682686U CN2010201273215U CN201020127321U CN201682686U CN 201682686 U CN201682686 U CN 201682686U CN 2010201273215 U CN2010201273215 U CN 2010201273215U CN 201020127321 U CN201020127321 U CN 201020127321U CN 201682686 U CN201682686 U CN 201682686U
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- ballast
- fluorescent lamp
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Abstract
The utility model discloses a dimmable fluorescent lamp ballast, which comprises a commercial power supply, a rectification system, a power factor improvement system, an inversion system and a load circuit discharge lit lamp which are connected in sequence. The utility model is characterized in that a lamp end of life detection system and a tube wire break detection system are connected between the inversion system and the load circuit discharge lit lamp; the inversion system is connected with a temperature correction system; and the temperature correction system is connected with a dimming signal system. The utility model can effectively adjust the condition of unstabitily of the commercial power supply, carries out the high-precision detection on the work state of the tube to make the lamp lit operation convenient and easy, can be dimmed in a large range to prevent a fire from happening and has safe and reliable quality.
Description
Technical field
The utility model belongs to the application electric technology field, relates to a kind of ballast, especially a kind of fluorescent lamp ballast of tunable optical.
Background technology
The circuit block diagram of existing ballast commonly used is that high-frequency current about 40kHz discharges and lights fluorescent lamp with commercial power (AC220V) by the rectification of high frequency generation circuit arrangement as shown in Figure 1.Import dim signal from the outside to ballast, Circuits System is carried out light modulation according to voltage and frequency in the signal change system by electric current in the control circuit.Current detecting system is by detecting output current, can detect whether fluorescent tube breaks, whether lamp tube service life terminate, and then the work of control rectifier.
Existing ballast is when detecting output current, and the result of detection is the summation of the operating current in filament consumed current and the fluorescent tube normally.For example: when fluorescent tube one end breaks, substantially do not produce electric current in the fluorescent tube, because filament institute consumed current also normally produces, so detection system can't detect (only just can detect) to above-mentioned situation when lamp tube ends all breaks, that is to say, even when fluorescent tube one end disconnects, ballast also continues energising, produces high-frequency vibration and works on, useless filament current sinking continues to rise, temperature raises, and can cause the fluorescent tube scorification, initiation fire.
The utility model content
(1) technical problem that will solve
For defective and the problem that overcomes ballast in the prior art, improve the performance and the induction precision of ballast, promote the fail safe and the property effect ratio of ballast, ballast is really become realize the energy-efficient control system device of fluorescent lamp.
(2) technical scheme
For solving the problems of the technologies described above, of the present utility modelly provide a kind of dimmable fluorescent lamp ballast, comprise: commercial power, commutation system, the power-factor improvement system, inversion system and load circuit discharge lamp operating, it is characterized in that, described commercial power links to each other by two-conductor line with described commutation system, described commutation system links to each other by two-conductor line with described power-factor improvement system, described power-factor improvement system links to each other by two-conductor line with described inversion system, described inversion system links to each other by two-conductor line with described load circuit discharge lamp operating, be connected to end of lamp life detection system and fluorescent tube broken wire detection system between described inversion system and the lead that described load circuit discharge lamp operating links to each other, described inversion system is connected with the temperature correcting system, described temperature correcting system links to each other with the dim signal system, and described load circuit discharge lamp operating links to each other with described end of lamp life detection system.
Wherein, high frequency being set in the described commutation system loop takes place, is high-frequency current with the alternating current rectification of importing.
Wherein, be provided with built-in light source in the described temperature correcting system, the temperature detection inductor is set around it.
Wherein, be provided with variable-resistance adjustment loop in the described dim signal system.
Wherein, described dim signal system also is provided with capacitor and dim signal machine.
(3) beneficial effect
Technique scheme has following beneficial effect:
(1) stops the testing circuit device by fluorescent tube disconnection detection circuit arrangement being set respectively and the special lamp tube lifetime being set separately, can accurately detect the situation that fluorescent tube one end disconnects, significantly promoted accuracy of detection;
(2) the utlity model has the function of dim signal being carried out the temperature revisal, under low temperature condition, the phenomenon that also can not occur extinguishing during to the fluorescent tube light modulation;
(3) be provided with the power factor correction circuit device, can effectively adjust the situation of commercial power voltage instability;
(4) with in the market similar ballast product relatively, under 100% illuminating state, power consumption reduces about 10%;
(5) be equipped with the safety protective circuit of end-of-life protection and broken string sensory perceptual system, prevent that fire from taking place;
(6) can be operated in environment temperature is in 0 ℃～50 ℃ environment within the scope.During low temperature, if the state (the ON/OFF switch is mode of operation not) that generation can't be lit a lamp, as long as the rotary light adjustment switch could be realized electric light again;
(7) in Circuits System, adopt capacitor and dim signal machine, make on a large scale (10%～100%) light modulation become possibility;
(8) the utility model reaches the Japanese electric peace method benchmark that comprises the test of noise terminal, and quality safety is reliable.
Description of drawings
Fig. 1 is the circuit block diagram of the ballast in the background technology scheme;
Fig. 2 is the circuit block diagram of the ballast in the utility model;
Fig. 3 is the ballast circuit board package face schematic diagram in the utility model;
Fig. 4 is the ballast circuit board solder side schematic diagram in the utility model;
Fig. 5 is the ballast circuit board wire bond figure in the utility model;
Fig. 6 is the ballast circuit schematic diagram in the utility model.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used to illustrate the utility model, but are not used for limiting scope of the present utility model.
In the present embodiment, high-frequency current about will utilizing the loop takes place high frequency commutation system rectification for 50KHz from the AC electric current of commercial power input, apply high frequency voltage at the two ends of each fluorescent lamp and make the formation electric current, as shown in Figure 6, adopt two lamps to use the loop, light source output T3T4 connects a lamp, and T5T6 connects a lamp.
Adjust the light modulating device that vibration frequency changes light illumination, utilize outside dim signal system (for example the perseveration variable resistor is accepted its resistance), the dim signal system makes the RT plate voltage of transformation of frequency conversion IC, obtains required illumination intensity of light source.
The temperature correcting system that the built-in light source environment temperature detects inductor TH1 is connected with the dim signal system, (because environment temperature electric current below 15 ℃ the time can reduce a lot, causing the phenomenon of can't lighting a lamp to occur) can compensate automatically because the light modulation power degree that the temperature reason causes.
Light modulation fast at once after lighting a lamp can be avoided just can carrying out the light modulation action afterwards because the low excessively phenomenon that can't light a lamp, the time set loop that is provided with in the light modulation loop of causing of environment temperature can make light source 2-3 after lighting a lamp be in 100% luminance state within second.
The electronic component of any producer all can occur qualified when volume production but the uneven phenomenon of quality, causes the output RT of frequency conversion IC change to occur, for adjusting above-mentioned change, has increased variable-resistance adjustment loop and solve this problem among the dim signal loop.
Two fluorescent tubes are lit a lamp,, cause the illumination of two lamps difference to occur because the difference of fluorescent tube itself causes tube current difference to occur.For proofreading and correct differences of illumination intensities, in fluorescent lamp, introduce ballast, be actually a high-frequency resonant inverter, its volume is little, and is in light weight, and energy consumption is low, still can start and work no stroboscopic and noise under the low-voltage.
Ballast of the prior art does not possess the end-of-life function or this function can't well be worked; in the technical solution of the utility model, be provided with the life-span stop detection loop; the protection input unit of IC sends signal during detection, informs with the light on and off phenomenon in the end-of-life stage.
The end of lifetime of fluorescent tube is called the end-of-life phase usually, because the filament at two ends can't send hot electron in the fluorescent tube, causes and can't light a lamp.In the present embodiment, scribble discharging substance above the filament, have the electronics formation electric current that flies out after the heating.Can be after discharging substance flies out at the remaining atrament of lamp tube ends tube wall (melanism), electronics can't fly out simultaneously, causes electric current to produce, and therefore reaches the life-span of fluorescent tube.
The end-of-life phenomenon occurs in above the filament of lamp tube ends, the discharging substance that the two ends filament is coated with above can not disperse simultaneously, is that wherein an end has dispersed earlier certainly, if continue to light a lamp this moment, filament can produce high temperature, even light fixture is dissolved or breaking out of fire.Therefore, life end checking function can the light on and off phenomenon be notified the generation of this phenomenon.
In the present embodiment, also having increased is the fluorescent tube broken wire detection system, can send signal by the protection output device of IC and turn off the light automatically.
The above only is a preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvement and replacement, these improvement and replacement also should be considered as protection range of the present utility model.
Claims (5)
1. dimmable fluorescent lamp ballast, comprise: commercial power, commutation system, the power-factor improvement system, inversion system and load circuit discharge lamp operating, it is characterized in that, described commercial power links to each other by two-conductor line with described commutation system, described commutation system links to each other by two-conductor line with described power-factor improvement system, described power-factor improvement system links to each other by two-conductor line with described inversion system, described inversion system links to each other by two-conductor line with described load circuit discharge lamp operating, be connected to end of lamp life detection system and fluorescent tube broken wire detection system between described inversion system and the lead that described load circuit discharge lamp operating links to each other, described inversion system is connected with the temperature correcting system, described temperature correcting system links to each other with the dim signal system, and described load circuit discharge lamp operating links to each other with described end of lamp life detection system.
2. dimmable fluorescent lamp ballast as claimed in claim 1 is characterized in that, high frequency is set in the described commutation system loop takes place, and be high-frequency current with the alternating current rectification of importing.
3. dimmable fluorescent lamp ballast as claimed in claim 1 is characterized in that, is provided with built-in light source in the described temperature correcting system, and the temperature detection inductor is set around it.
4. dimmable fluorescent lamp ballast as claimed in claim 1 is characterized in that, is provided with variable-resistance adjustment loop in the described dim signal system.
5. dimmable fluorescent lamp ballast as claimed in claim 1 is characterized in that, described dim signal system also is provided with capacitor and dim signal machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201273215U CN201682686U (en) | 2010-03-08 | 2010-03-08 | Dimmable fluorescent lamp ballast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201273215U CN201682686U (en) | 2010-03-08 | 2010-03-08 | Dimmable fluorescent lamp ballast |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201682686U true CN201682686U (en) | 2010-12-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201273215U Expired - Fee Related CN201682686U (en) | 2010-03-08 | 2010-03-08 | Dimmable fluorescent lamp ballast |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201682686U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102105015A (en) * | 2011-03-28 | 2011-06-22 | 北京中环优耐特照明电器有限公司 | Ballast control method for fluorescent lamp and ballast |
-
2010
- 2010-03-08 CN CN2010201273215U patent/CN201682686U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102105015A (en) * | 2011-03-28 | 2011-06-22 | 北京中环优耐特照明电器有限公司 | Ballast control method for fluorescent lamp and ballast |
| CN102105015B (en) * | 2011-03-28 | 2014-01-29 | 北京中环优耐特照明电器有限公司 | Ballast control method for fluorescent lamp and ballast |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101222 Termination date: 20120308 |