CN2604039Y - Low-voltage DC fluorescent lamp electronic inverter - Google Patents
Low-voltage DC fluorescent lamp electronic inverter Download PDFInfo
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- CN2604039Y CN2604039Y CN 03215070 CN03215070U CN2604039Y CN 2604039 Y CN2604039 Y CN 2604039Y CN 03215070 CN03215070 CN 03215070 CN 03215070 U CN03215070 U CN 03215070U CN 2604039 Y CN2604039 Y CN 2604039Y
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- fluorescent tube
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- tube
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Abstract
The utility model relates to a low voltage direct current fluorescent lamp electronics inversion device, consists of a protection circuit 1, an EMC filter circuit 2, a relay delay control circuit 3, an oscillation circuit 4 and a lamp tube preheat circuit 5. The lamp tube preheat circuit is provided with a capacitance C1 and a relay normally closed contact J1 therein. The C1 is serially connected between the transformer winding and the lamp tube filament. The J1 is serially connected between two groups of filament. The utility model is characterized in that the lamp tube preheat circuit is also provided with a capacitance C2 and a normally closed contact J2. The C2 and J2 are also connected between the B2 and the filaments, and composed the preheat circuit together with the C1 and J1. The utility model is provided with simple and reasonable circuit structure, stable and reliable work, can effectively prolong the working life of the lighting device, and can be extensively applied in emergency lighting luminaire, straight tube fluorescent lamp and compact type energy saving lamps.
Description
Technical field
The utility model relates to a kind of lighting device, a kind of specifically low-voltage direct fluorescence lamp electronic inverter.
Background technology
We know; low-voltage direct fluorescence lamp electronic inverter kind is many; its circuit structure is generally by protective circuit; filter circuit; oscillating circuit and tube filament preheat circuit are formed; the filament preheating circuit that is complementary with various inverters also has nothing in common with each other; typical circuit has two kinds; a kind of is directly to extract two windings from the concussion pulse transformer, respectively and receive on two groups of filaments, filament is carried out preheating; the shortcoming of this preheat circuit is that fluorescent tube startup ignition procedures and filament pre-heating are synchronous fully; be not earlier to filament pre-heating, electronics powder electronics is fully activated after, the restart point pipe of lighting a lamp; just still there is the electronics sputter problem of filament electronic powder in this inevitably; cause the burning of fluorescent material on the fluorescent tube inwall, fluorescent tube root melanism is accelerated, and fluorescent tube is lighted after the operate as normal; two Transformer Winding do not disconnect with filament; still filament is applied electric current, cause the excessive loss of electronics powder electronics, shortened the life-span of fluorescent tube.Another kind of circuit adopts relay time-delay control mode, can realize the light a lamp ideal process of pipe of start-up point after the preheating of tube filament elder generation, at present, the shortcoming that sort circuit exists is also to fail to realize the random adjustment and the control of preheat curent size, to adapt to different fluorescent tubes, because the filament resistance difference of different fluorescent tubes will reach same desirable preheat temperature and need apply different electric currents.Do not address this problem the early stage melanism that just can not thoroughly overcome fluorescent tube, thus prolonging lamp tube service life to greatest extent.
Summary of the invention
Technical problem to be solved in the utility model is to overcome above-mentioned the deficiencies in the prior art, and a kind of simple structure is provided, and cost is low, and working stability is reliable, prolongs the low-voltage direct fluorescence lamp electronic inverter in lighting device life-span greatly.
The technical scheme in the invention for solving the above technical problem is; a kind of low-voltage direct fluorescence lamp electronic inverter; it is by protective circuit 1; EMC filter circuit 2; relay delay control circuit 3; oscillating circuit 4; fluorescent tube preheat circuit 5 is formed; be provided with capacitor C 1 in the fluorescent tube preheat circuit; relay normally-closed contact J1; C1 is serially connected between Transformer Winding B2 and the tube filament; J1 is serially connected between two groups of filaments; it is characterized in that: the fluorescent tube preheat circuit also is provided with capacitor C 2 and relay normally-closed contact J2; C2; J2 also is connected B2; between the filament, and C1; J1 forms the fluorescent tube preheat circuit jointly.
The capacitor C 2 of the utility model fluorescent tube preheat circuit is connected with J2, and is in parallel with capacitor C 1 again, connects with Transformer Winding B2, tube filament and J1 then, forms the filament pre-heating loop.
The utility model fluorescent tube preheat circuit can also be by capacitor C 1, C2, relay normally-closed contact J1, J2, Transformer Winding B2 and tube filament are formed, C2 is in parallel with J2, connect with C1 again, then with Transformer Winding B2, the filament pre-heating loop is formed in tube filament and J2 series connection, and J1 is serially connected between two groups of filaments.
The utility model against existing technologies, can arbitrarily be adjusted and control filament pre-heating electric current at different fluorescent tubes owing to adopt the distinct electrical line structure, obtains optimal pre-heat effect, has prolonged the life-span of lighting device greatly.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a kind of electrical block diagram of the present utility model.
Fig. 2 is an another kind of electrical block diagram of the present utility model.
Among the figure 1, protective circuit, 2, the EMC filter circuit, 3, the relay delay control circuit, 4, oscillating circuit, 5, the fluorescent tube preheat circuit.
Embodiment
From Fig. 1, as can be seen, the utility model circuit mainly consists of the following components among Fig. 2, and 1, protective circuit, 2, the EMC filter circuit, 3, the relay delay control circuit, 4, oscillating circuit, 5, the fluorescent tube preheat circuit.Protective circuit 1 is used for guaranteeing that inverter connects instead and the safety under the instantaneous excessive situation of electric current at power positive cathode; EMC filter circuit 2 is used for guaranteeing that the electromagnetic compatibility characteristic of inverter echos relevant safety requirements; relay delay control circuit 3 is finished the control of warm-up time and warm; oscillating circuit 4 is reverse into low-voltage DC the High Level AC Voltage load fluorescent tube luminous work in stability and high efficiency ground of 20KHz--70KHz; the fluorescent tube preheat circuit is adjusted the size of preheat curent by being provided with of electric capacity; finish preheating with the relay delay control circuit to filament; guarantee that tube filament reaches ideal temperature; allow electronics powder electronics well activate; help the startup of fluorescent tube; prevent the fluorescent tube melanism, the life-span of prolonging lamp tube and even entire lighting device.The utility model circuit adopts the 3V--36V low-voltage dc power supply.The utility model protective circuit 1, EMC filter circuit 2, relay delay control circuit 3 and oscillating circuit 4 belong to prior art, no longer describe in detail here.
Characteristics of the present utility model are: be provided with capacitor C 1, relay normally-closed contact J1 in the fluorescent tube preheat circuit, C1 is serially connected between Transformer Winding B2 and the tube filament, J1 is serially connected between two groups of filaments, the fluorescent tube preheat circuit also is provided with capacitor C 2 and relay normally-closed contact J2, C2, J2 also are connected between B2, the filament and C1, J1 form the fluorescent tube preheat circuit jointly.
Fig. 1 is a kind of embodiment electrical block diagram, and its protective circuit 1 is by protective tube FUSE, and diode D forms, and FUSE plays the effect of overcurrent fuse protection, and D plays the reversal connection of power supply both positive and negative polarity by protective effect.EMC filter circuit 2 is by capacitor C, and inductance L is formed, and they can suppress and filtering conducted interference.Relay delay control circuit 3 is made up of relay J and delay control circuit, sets the energising action of suitable time of delay of control relay.Oscillating circuit 4 is made up of inverse switch circuit and transformer B, and low-voltage DC is reverse into the High Level AC Voltage of 20KHz--70KHz, and voltage is generally at 100V-500V, and this needs realize by appropriate design transformer B according to the electrical quantity of fluorescent tube.Relay delay control circuit 3 and oscillating circuit 4 all adopt prior art, no longer describe in detail here.Fluorescent tube preheat circuit 5 is by capacitor C 1, C2, relay normally-closed contact J1, J2, and Transformer Winding B2 and tube filament are formed, capacitor C 2 is connected with J2, and is in parallel with capacitor C 1 again, then with Transformer Winding B2, the fluorescent tube preheating circuit is formed in tube filament and J1 series connection, and J1 is serially connected between two groups of filaments.Operation principle is; Energized, oscillating circuit work, the electric current of fluorescent tube preheat circuit is to filament pre-heating, relay delay control circuit work simultaneously, delay control circuit control relay J energising action behind the certain hour, normally-closed contact J1, J2 disconnects, and fluorescent tube starts to be lighted and stabilized illumination work.In the filament pre-heating process, C2 is connected in parallel on the C1 by J2, and capacitance increases, can produce bigger preheat curent, arrive when warm-up time, J2 disconnects, C2 and C1 branch are opened, and only provide suitable operating current by C1 to fluorescent tube, and it is operated in the suitable power bracket.
Fig. 2 is another kind of embodiment electrical block diagram, and protective circuit 1, EMC filter circuit 2, relay delay control circuit 3, oscillating circuit 4 are identical with embodiment circuit correspondence shown in Figure 1, repeat no more.Different is fluorescent tube preheat circuit 5 parts, and it is by capacitor C 1, C2, relay normally-closed contact J1, J2, and Transformer Winding B2 and tube filament are formed.Capacitor C 2 is in parallel with J2, connects with capacitor C 1 again, and then with Transformer Winding B2, the filament pre-heating loop is formed in tube filament and J1 series connection, and J1 is serially connected between two groups of filaments.Operation principle is; Energized, oscillating circuit work, the electric current of filament preheating circuit is to filament pre-heating, relay delay control circuit work simultaneously, delay control circuit control relay J energising action behind the certain hour, normally-closed contact J1, J2 disconnects, and fluorescent tube starts to be lighted and stabilized illumination work.In the filament pre-heating process, C2 short circuit, the capacitance that the C1 capacitance is connected with C2 greater than C1 owing to J2, can produce bigger preheat curent, arrive when warm-up time, J2 disconnects, C2 connects with C1, provides suitable operating current to fluorescent tube, and it is operated in the suitable power bracket.
The utility model circuit structure is simple, and rationally, working stability is reliable, can effectively prolong the life-span of lighting device, can be widely used in emergence lighting lamp, on straight tube fluorescent lamp tool and the compact type energy-saving lamp.
Claims (3)
1, a kind of low-voltage direct fluorescence lamp electronic inverter; it is made up of protective circuit 1, EMC filter circuit 2, relay delay control circuit 3, oscillating circuit 4, fluorescent tube preheat circuit 5; be provided with capacitor C 1, relay normally-closed contact J1 in the fluorescent tube preheat circuit; C1 is serially connected between Transformer Winding B2 and the tube filament; J1 is serially connected between two groups of filaments; it is characterized in that: the fluorescent tube preheat circuit also is provided with capacitor C 2 and relay normally-closed contact J2; C2, J2 also are connected between B2 and the filament and C1, J1 form the fluorescent tube preheat circuit jointly.
2, low-voltage direct fluorescence lamp electronic inverter according to claim 1, it is characterized in that: the capacitor C 2 in the said fluorescent tube preheat circuit is connected with J2, in parallel with capacitor C 1 again, connect with Transformer Winding B2, tube filament and J1 then, form the filament pre-heating loop.
3, low-voltage direct fluorescence lamp electronic inverter according to claim 1, it is characterized in that: the C2 of said fluorescent tube preheat circuit is in parallel with J2, connects with C1 again, connects with Transformer Winding B2, tube filament and J1 then, forms the filament pre-heating loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03215070 CN2604039Y (en) | 2003-02-14 | 2003-02-14 | Low-voltage DC fluorescent lamp electronic inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03215070 CN2604039Y (en) | 2003-02-14 | 2003-02-14 | Low-voltage DC fluorescent lamp electronic inverter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2604039Y true CN2604039Y (en) | 2004-02-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03215070 Expired - Fee Related CN2604039Y (en) | 2003-02-14 | 2003-02-14 | Low-voltage DC fluorescent lamp electronic inverter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2604039Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102036453A (en) * | 2009-09-26 | 2011-04-27 | 于韶东 | Protecting device of fluorescent lamp illuminating system |
-
2003
- 2003-02-14 CN CN 03215070 patent/CN2604039Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102036453A (en) * | 2009-09-26 | 2011-04-27 | 于韶东 | Protecting device of fluorescent lamp illuminating system |
| CN102036453B (en) * | 2009-09-26 | 2014-07-23 | 于韶东 | Protecting device of fluorescent lamp illuminating system |
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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: 20040218 Termination date: 20110214 |