CN201541380U - Filament preheating and rectifying device - Google Patents
Filament preheating and rectifying device Download PDFInfo
- Publication number
- CN201541380U CN201541380U CN200920198068XU CN200920198068U CN201541380U CN 201541380 U CN201541380 U CN 201541380U CN 200920198068X U CN200920198068X U CN 200920198068XU CN 200920198068 U CN200920198068 U CN 200920198068U CN 201541380 U CN201541380 U CN 201541380U
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- diode
- delay switch
- transient voltage
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Abstract
The utility model relates to a filament preheating and rectifying device comprising an electronic ballast; the electronic ballast comprises a filament capacitor and also comprises a delay switch and a two-way instantaneous voltage suppression diode; and the delay switch, the two-way instantaneous voltage suppression diode and the filament are connected in series and then connected with the filament capacitor in parallel. Compared with the prior art, the filament preheating and rectifying device provides preheating for the filament of the lighting equipment by utilizing the characteristics that the high voltage conduction generated by serial connection of the delay switch connected with the filament capacitor in parallel and the two-way instantaneous voltage suppression diode delays disconnection to, thus avoiding the problem that when the lighting equipment is forcefully started under cold state, the matters on the surface of the filament sputter and bombard the fluorescent powder at the tube end to cause two ends of a lamp tube to be black, thus leading to the aging in advance. In addition, the filament preheating and rectifying device also can greatly reduce the consumption of plate loss, improve the system efficiency, realizes the high efficiency and energy conservation, and is very easy to pass the energy efficiency standards, such as American A-grade energy efficiency standard and the like.
Description
Technical field
The utility model relates to rectifying device, relates in particular to a kind of filament pre-heating rectifying device.
Background technology
Because gaseous discharge lamp, for example fluorescent lamp, neon light, Metal halogen lamp etc. are the negative resistance electric light sources, and promptly Δ V/ Δ L is a negative value.When lamp current rose, the operating voltage of fluorescent tube descended, but supply power voltage can not descend, and this point voltage that has more can make lamp current further rise after being added to fluorescent tube, and so circulation finally burns out fluorescent tube or fluorescent tube extinguishes.So make the fluorescent tube operate as normal, should be equipped with extra current limitation device, in order to restriction and stable lamp current.This current-limiting apparatus is called ballast.
The ballast that gaseous discharge lamp is commonly used has two kinds at present: inductance type ballast and high-frequency ac electric ballast.Inductance type ballast is operated in power frequency city electricity consumption frequency, there is that volume is big, Heavy Weight, heat radiation difficulty, inefficiency, the luminous shortcoming that stroboscopic is arranged and need to consume metal materials such as a large amount of copper and silicon steel of lamp.
Along with the semiconductor technology develop rapidly, various high anti-pressure power switching devices continue to bring out.At the end of the seventies, external producer takes the lead in having released first generation electric ballast, is the great innovation of illumination development history the next item up.Because it has many advantages such as energy-conservation, caused global very big concern and interest, think to replace the ideal product of Inductive ballast, some famous enterprises have all dropped into suitable human and material resources and have carried out more higher leveled research and development subsequently.Many semiconductor companies have released the series of products of special power switching device and control integrated circuit.For example 1984, Siemens Company developed Active Power Factor Correction electrical equipment ic such as tpa4812, and power factor reaches 0.99.Some companies integrated electronic ballast that releases one after another subsequently, Finland Hull Valley company successfully released tunable optical monolithic integrated circuit electric ballast again in 89 years.Electric ballast at present in the whole world particularly developed country widely use.
But, adopt existing electric ballast in the moment of opening bright fluorescent tube, lamp tube ends can be sent blue-violet light.This be since filament not the fluorescent tube of preheating start by force in cold conditions, cause due to the filament surface mass sputter bombardment pipe end fluorescent material, it is to cause the lamp tube ends blackout, old and feeble in advance main cause.Thereby adopt existing electric ballast can cause shorten the useful life of fluorescent tube.
Summary of the invention
Technical problem to be solved in the utility model is: how to make electric ballast provide preheating for filament, to improve the useful life of fluorescent tube.
For solving the problems of the technologies described above, the utility model provides a kind of filament pre-heating rectifying device, comprise electric ballast, described electric ballast comprises filament capacitance, also comprise postponing switch and bidirectional transient voltage inhibition diode, described delay switch, bidirectional transient voltage suppress diode and described filament three series connection is afterwards in parallel with described filament capacitance.
Alternatively, the time-delay of described delay switch is 1.5 seconds to 2.5 seconds.
Alternatively, described delay switch allows the average current that passes through greater than 1 peace.
Alternatively, described bidirectional transient voltage suppresses the high 50V to 100V of rated voltage of the minimum inhibition voltage ratio lighting apparatus of diode.
Alternatively, described bidirectional transient voltage suppresses the transient power of diode greater than 600 watts.
Alternatively, described delay switch and bidirectional transient voltage suppress diode and the separate installation of described electric ballast.
Alternatively, described delay switch and bidirectional transient voltage inhibition diode and described electric ballast are installed in the same shell.
Alternatively, described delay switch is connected with the positive pole of a diode respectively with the end that bidirectional transient voltage inhibition diode is not connected, and the negative pole of these two diodes is connected with the two ends of described filament capacitance respectively.
Compared with prior art, the delay switch of the utility model utilization and filament capacitance parallel connection and bidirectional transient voltage suppress the connect characteristic of the high pressure conducting that produced and the disconnection of delaying time of diode provides preheating for the filament of lighting apparatus, thereby the sputter of filament surface mass is bombarded pipe end fluorescent material and is caused lamp tube ends blackout, old and feeble in advance problem when having avoided cold conditions to start lighting apparatus by force.
In addition, owing to postpone switch and bidirectional transient voltage suppresses the consumption of diode inactivity, so the utility model realized the no power consumption preheating of lighting apparatus, improved the efficient of illuminator, saved the energy.
In addition, the utility model avoids electron rectifier to be in the blasting state under the aging abnormality that can't start of the filament of lighting apparatus, thereby has avoided the triode excessive heating in the electron rectifier and burn.
At last, the utility model can also reduce plate loss greatly, improves the efficient of system, realizes energy-efficiently, is easy to by as efficiency standards such as U.S. A level efficiency standards.
Description of drawings
Fig. 1 is equipped with the circuit diagram of the illuminator of filament pre-heating rectifying device for embodiment of the utility model;
Fig. 2 is equipped with the circuit diagram of the illuminator of filament pre-heating rectifying device for another embodiment of the utility model.
Embodiment
In embodiment, will be the effect that example illustrates structure, running and the generation thereof of the rectifying device that the utility model is asked for protection with the fluorescent lamp load.
As shown in Figure 1, present embodiment provides lighting apparatus 100.This lighting apparatus comprises that electric ballast 101, delay switch 111, bidirectional transient voltage suppress diode 112 and fluorescent lamp load 107.
Wherein, electric ballast 101 comprises rectification circuit 102 and filament capacitance 103.This rectification circuit 102 has and is used for the input 121 that is connected with AC power, and the output 122 that rectified current output is provided.The two ends of filament capacitance 103 are connected with the output of rectification circuit 102 respectively.The circuit structure of above-mentioned electron rectifier 101 is well known to those skilled in the art, does not repeat them here.
There are two filaments 108,109 at the two ends of fluorescent lamp load 107.And be connected with the two ends of filament capacitance 103 again after delay switch 111, bidirectional transient voltage inhibition diode 112 and filament 108,109 series connection, make delay switch 111, bidirectional transient voltage inhibition diode 112 form in parallel with filament capacitance 103 after connecting with filament 108,109.
As shown in Figure 2, according to another embodiment of the present utility model, postpone switch 111 and bidirectional transient voltage and suppress both ends of not being connected of diode 112 and be connected with the positive pole of diode 104,105 respectively, and the negative pole of this diode 104,105 is connected with the two ends of filament capacitance 103 respectively.This connected mode that has increased diode 104,105 can reduce plate loss greatly, improves the efficient of system, realizes energy-efficiently, is easy to by as efficiency standards such as U.S. A level efficiency standards.
Inventor of the present utility model finds that in order to realize postponing the voltage matches of switch 111 and bidirectional transient voltage inhibition diode 112 and fluorescent lamp load 107, the preferred time-delay that postpones switch 111 is 1.5 seconds to 2.5 seconds, and most preferred time-delay is 2 seconds; The average current that delay switch 111 allows to pass through is preferably greater than 1 peace; The minimum that bidirectional transient voltage suppresses diode suppresses the high 50V to 100V of rated voltage that voltage preferably is equipped with according to exposed installation; The transient power that bidirectional transient voltage suppresses diode is preferably greater than 600 watts.
In addition, for convenience delay switch 111 and bidirectional transient voltage inhibition diode 112 are transformed and be convenient for changing to existing electric ballast 101, postpone switch 111 and can be installed in fluorescent lamp load 107 sides independently of each other with electric ballast 101 with bidirectional transient voltage inhibition diode 112.Certainly, also can be installed in the same shell with electric ballast 101, in order to realize the integrated of rectifying device postponing switch 111 and bidirectional transient voltage inhibition diode 112.
The reason that the lighting apparatus 100 that the foregoing description provides produces beneficial effect is, when fluorescent lamp load 107 starts, electric ballast 101 produces high voltage on filament 108,109, this moment, bidirectional transient voltage suppressed diode 112 conductings, the delay switch 111 that is in conducting provides preheat curent for filament 108,109, postpones switch 111 energisings and disconnects fluorescent lamp load 107 build-ups of luminance after about 2 seconds, bidirectional transient voltage suppresses diode 112 and ends, and lighting apparatus 100 enters normal operating conditions.Because filament 108,109 has been produced preheating, thereby the sputter of filament surface mass is bombarded pipe end fluorescent material and is caused the lamp tube ends blackout when having avoided cold conditions to start lighting apparatus by force, old and feeble in advance problem, the switch life of fluorescent lamp load 107 can be increased to more than 20000 times from average 4000 times.
And if fluorescent lamp load 107 is can't start because of reason such as aging the time, electric ballast 101 is in the blasting state, the very fast heating of triode in the electric ballast 101 (figure does not show), and this moment, bidirectional transient voltage suppressed diode 112 conducting under high voltage, thereby avoided the electron rectifier 101 to continue to be in the blasting state, thereby avoided in the electron rectifier 101 triode excessive heating and burn.When existing electric ballast can't start in fluorescent lamp load 107, the triode in the electric ballast will be burnt at about about 1 minute.And adopting the utility model when fluorescent lamp load 107 can't start, the triode in the electron rectifier 101 can not burnt more than 1 hour.
Though the utility model with preferred embodiment openly as above; but it is not to be used for limiting claim; any those skilled in the art are not in breaking away from spirit and scope of the present utility model; can make possible change and modification, therefore protection range of the present utility model should be as the criterion with the scope that the utility model claim is defined.
Claims (8)
1. filament pre-heating rectifying device, comprise electric ballast, described electric ballast comprises filament capacitance, it is characterized in that: also comprise postponing switch and bidirectional transient voltage inhibition diode, described delay switch, bidirectional transient voltage suppress diode and described filament three series connection is afterwards in parallel with described filament capacitance.
2. filament pre-heating rectifying device as claimed in claim 1 is characterized in that: the time-delay of described delay switch is 1.5 seconds to 2.5 seconds.
3. filament pre-heating rectifying device as claimed in claim 1 is characterized in that: the average current that described delay switch allows to pass through is greater than 1 peace.
4. filament pre-heating rectifying device as claimed in claim 1 is characterized in that: described bidirectional transient voltage suppresses the high 50V to 100V of rated voltage of the minimum inhibition voltage ratio lighting apparatus of diode.
5. filament pre-heating rectifying device as claimed in claim 1 is characterized in that: described bidirectional transient voltage suppresses the transient power of diode greater than 600 watts.
6. filament pre-heating rectifying device as claimed in claim 1 is characterized in that: described delay switch and bidirectional transient voltage suppress diode and the separate installation of described electric ballast.
7. filament pre-heating rectifying device as claimed in claim 1 is characterized in that: described delay switch and bidirectional transient voltage suppress diode and described electric ballast is installed in the same shell.
8. filament pre-heating rectifying device as claimed in claim 1, it is characterized in that: described delay switch is connected with a diode cathode respectively with the end that bidirectional transient voltage inhibition diode is not connected, and the negative pole of these two diodes is connected with the two ends of described filament capacitance respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920198068XU CN201541380U (en) | 2009-10-19 | 2009-10-19 | Filament preheating and rectifying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920198068XU CN201541380U (en) | 2009-10-19 | 2009-10-19 | Filament preheating and rectifying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201541380U true CN201541380U (en) | 2010-08-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920198068XU Expired - Fee Related CN201541380U (en) | 2009-10-19 | 2009-10-19 | Filament preheating and rectifying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201541380U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102170739A (en) * | 2011-04-29 | 2011-08-31 | 吴江华能电子有限公司 | Preheating circuit applied to fluorescent lamp electronic ballast |
-
2009
- 2009-10-19 CN CN200920198068XU patent/CN201541380U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102170739A (en) * | 2011-04-29 | 2011-08-31 | 吴江华能电子有限公司 | Preheating circuit applied to fluorescent lamp electronic ballast |
| CN102170739B (en) * | 2011-04-29 | 2013-05-15 | 吴江华能电子有限公司 | Preheating circuit applied to fluorescent lamp electronic ballast |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100804 Termination date: 20141019 |
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| EXPY | Termination of patent right or utility model |