CN203435199U - Bidirectional silicon controlled rectifier ballasted LED lamp - Google Patents
Bidirectional silicon controlled rectifier ballasted LED lamp Download PDFInfo
- Publication number
- CN203435199U CN203435199U CN201320527914.4U CN201320527914U CN203435199U CN 203435199 U CN203435199 U CN 203435199U CN 201320527914 U CN201320527914 U CN 201320527914U CN 203435199 U CN203435199 U CN 203435199U
- Authority
- CN
- China
- Prior art keywords
- led lamp
- current
- thermistor
- limiting resistance
- triode thyristor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model discloses a bidirectional silicon controlled rectifier ballasted LED lamp comprising a thermo-induction unit, a power adjusting unit, a DC LED lamp panel and a bridge rectifier, wherein the thermo-induction unit is electrically connected with the DC LED lamp panel and the bridge rectifier; and the power adjusting unit is electrically connected with a power source and the bridge rectifier. The thermo-induction unit comprises a thermistor and a current-limiting resistor, wherein the thermistor and the current-limiting resistor are coupled. The coupled thermistor and the current-limiting resistor are utilized, so that the heat quantity generated due to the change of the current of the current-limiting resistor in power-on process influences the impedance of the thermistor, then the influence of the impedance of the thermistor on the power adjusting unit in a circuit enables the power of the circuit to be adjusted, and the effect of adjusting the brightness of an LED lamp or ballasting is achieved.
Description
Technical field
The utility model relates to LED lamp field, particularly a kind of LED lamp with bidirectional triode thyristor ballast.
Background technology
Light fixture because LED makes, has power consumption low, and the advantages such as little, long service life of generating heat have been widely used in every field.Because the drive circuit of traditional LED fluorescent tube or bulb has used electrolytic capacitor and driving component, although efficiency and outputting current steadily, existing LED drive circuit, its life-span is far away from LED lamp, often LED lamp does not also damage, and drive circuit is died ahead of time.In order to extend the life-span of LED lamp, the life-span of drive circuit need to strengthen.
Utility model content
The technical problems to be solved in the utility model is for above-mentioned the deficiencies in the prior art, and a kind of LED lamp with bidirectional triode thyristor ballast that can be suitable with the life-span of LED is provided.
For solving the problems of the technologies described above, technical solution adopted in the utility model is: a kind of LED lamp with bidirectional triode thyristor ballast, comprise thermoinduction unit, power adjustments unit, direct-current LED lamp plate and bridge rectifier, thermoinduction unit and bridge rectifier, direct-current LED lamp plate are electrically connected successively, and power adjustments unit is electrically connected power supply and bridge rectifier.
In technique scheme, thermoinduction unit comprises thermistor and current-limiting resistance, and thermistor and current-limiting resistance are coupled.
In technique scheme, thermistor is pasted on current-limiting resistance by heat-conducting glue; Or thermistor is pasted sheet type thermistor, current-limiting resistance is SMD current-limiting resistance, and this pasted sheet type thermistor and SMD current-limiting resistance are welded on the pad of mutual vicinity.
In technique scheme, thermistor is negative tempperature coefficient thermistor.
In technique scheme, power adjustments unit comprises polarity free capacitor, resistance, bidirectional trigger diode and bidirectional triode thyristor.
A LED lamp for bidirectional triode thyristor ballast, comprises thermoinduction unit, power adjustments unit and AC LED lamp plate, and thermoinduction unit and AC LED lamp plate are electrically connected, and power adjustments unit is electrically connected power supply and AC LED lamp plate.
In technique scheme, thermoinduction unit comprises thermistor and current-limiting resistance, and thermistor and current-limiting resistance are coupled.
In technique scheme, thermistor is pasted on current-limiting resistance by heat-conducting glue; Or thermistor is pasted sheet type thermistor, current-limiting resistance is SMD current-limiting resistance, and this pasted sheet type thermistor and SMD current-limiting resistance are welded on the pad of mutual vicinity.
In technique scheme, thermistor is negative tempperature coefficient thermistor.
In technique scheme, power adjustments unit comprises polarity free capacitor, resistance, bidirectional trigger diode and bidirectional triode thyristor.
The beneficial effects of the utility model are: mainly utilized the thermistor and the current-limiting resistance that are coupled, make the variation of current-limiting resistance electric current in galvanization, and the size of the heat producing, have influence on the size of the impedance of thermistor, then the impact of the size of this thermistor impedance on power adjustments unit in circuit, the power of circuit is adjusted, and reached the effect of adjusting brightness of LED lamps or ballast.Framework of the present utility model is simplified, do not use electrolytic capacitor, inductance, transformer and chip, advantages such as so failure rate, far below the LED lamp that adopts traditional switch formula drive circuit, reaches without radio frequency interference, high brightness, operating current is little, framework is simplified, low-cost, circuit reliability is high and overall efficiency is good.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the utility model the first embodiment;
Fig. 2 is the circuit diagram of the utility model the second embodiment.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
The first embodiment, as shown in Figure 1, a kind of LED lamp with bidirectional triode thyristor ballast, comprise thermoinduction unit 1, power adjustments unit 4, bridge rectifier 2 and direct-current LED lamp plate 3, thermoinduction unit 1 is connected in series with bridge rectifier 2, direct-current LED lamp plate 3, and power adjustments unit 4 connects power supply and bridge rectifier 2.Wherein, thermoinduction unit 1 is coupled to form by negative tempperature coefficient thermistor NTC and current-limiting resistance Ra, power adjustments unit 4 is formed by connecting by polarity free capacitor Cb, resistance R b, bidirectional trigger diode DIAC and bidirectional triode thyristor TRIAC, bridge rectifier 2 is formed by connecting by diode D1, D2, D3, D4, direct-current LED lamp plate 3 by the light-emitting diode group of some series connection again parallel connection form.Its circuit connecting relation is as follows: one extreme, the polarity free capacitor Ca of power supply are connected in series with negative tempperature coefficient thermistor NTC, and this polarity free capacitor Ca is in parallel with the polarity free capacitor Cb in power adjustments unit 4 again with the two ends of negative tempperature coefficient thermistor NTC; This polarity free capacitor Cb is in parallel with bidirectional trigger diode DIAC again, and resistance R b is in parallel with this bidirectional trigger diode DIAC again after connecting with bidirectional triode thyristor TRIAC; Bridge rectifier 2 is connected with the node between bidirectional triode thyristor TRIAC with resistance R b, and this bridge rectifier 2 is also with to be connected another of power source after current-limiting resistance Ra serial connection extreme; The other two ends of this bridge rectifier 2 connect direct-current LED lamp plate 3.In this thermoinduction unit 1, negative tempperature coefficient thermistor NTC is pasted on current-limiting resistance Ra with heat-conducting glue, or SMD negative tempperature coefficient thermistor NTC and SMD current-limiting resistance Ra are welded on the pad of mutual vicinity.During electric power starting, the electric current process current-limiting resistance Ra of bridge rectifier 2 and direct-current LED lamp plate 3 and the thermoinduction unit 1 that negative tempperature coefficient thermistor NTC forms, larger through the electric current of current-limiting resistance Ra during energising, the heat producing is higher, the impedance of the negative tempperature coefficient thermistor NTC of close this current-limiting resistance Ra is diminished, make the polarity free capacitor Ca being connected with negative tempperature coefficient thermistor NTC, and the polarity free capacitor Cb in power adjustments unit 4, it is elongated that the RC that resistance R b forms discharges and recharges the time, the phase place that sluggish bidirectional trigger diode DIAC triggers bidirectional triode thyristor TRIAC, can automatically increase or decrease the power of this whole LED lamp with bidirectional triode thyristor ballast, with lightness stabilized or direct-current LED lamp plate 3 is reached to the object of ballast.
The second embodiment, as shown in Figure 2, a kind of LED lamp with bidirectional triode thyristor ballast, comprises thermoinduction unit 1, power adjustments unit 4 and AC LED lamp plate 5, and thermoinduction unit 1 is connected in series with AC LED lamp plate 5, and power adjustments unit 4 connects power supply.Wherein, thermoinduction unit 1 is coupled to form by negative tempperature coefficient thermistor NTC and current-limiting resistance Ra, power adjustments unit 4 is formed by connecting by polarity free capacitor Cb, resistance R b, bidirectional trigger diode DIAC and bidirectional triode thyristor TRIAC, and after the light-emitting diode group series connection that AC LED lamp plate 5 is composed in parallel by some groups of two light-emitting diodes, parallel connection forms again.One extreme, the polarity free capacitor Ca of power supply are connected in series with negative tempperature coefficient thermistor NTC, and this polarity free capacitor Ca is in parallel with the polarity free capacitor Cb in power adjustments unit 4 again with the two ends of negative tempperature coefficient thermistor NTC; This polarity free capacitor Cb is in parallel with bidirectional trigger diode DIAC again, and resistance R b is in parallel with this bidirectional trigger diode DIAC again after connecting with bidirectional triode thyristor TRIAC; Another of power supply is extreme, current-limiting resistance Ra is connected in series and is connected in the node between resistance R b and bidirectional triode thyristor TRIAC with AC LED lamp plate 5.In this thermoinduction unit 1, negative tempperature coefficient thermistor NTC is pasted on current-limiting resistance Ra with heat-conducting glue, or SMD negative tempperature coefficient thermistor NTC and SMD current-limiting resistance Ra are welded on the pad of mutual vicinity.During electric power starting, the electric current process current-limiting resistance Ra of bridge rectifier 2 and direct-current LED lamp plate 3 and the thermoinduction unit 1 that negative tempperature coefficient thermistor NTC forms, larger through the electric current of current-limiting resistance Ra during energising, the heat producing is higher, the impedance of the negative tempperature coefficient thermistor NTC of close this current-limiting resistance Ra is diminished, make the polarity free capacitor Ca being connected in series with negative tempperature coefficient thermistor NTC, and in power adjustments unit 4 without memory capacitor C b, it is elongated that the RC that resistance R b forms discharges and recharges the time, the phase place that sluggish bidirectional trigger diode DIAC triggers bidirectional triode thyristor TRIAC, can automatically increase or decrease the power of this whole LED lamp with bidirectional triode thyristor ballast, with lightness stabilized or AC LED lamp plate 5 is reached to the object of ballast.
This a kind of LED lamp with bidirectional triode thyristor ballast, its operation principle is as follows: after switching on power, electric current through current-limiting resistance Ra is larger, the heat producing is higher, the impedance of negative tempperature coefficient thermistor NTC is diminished, polarity free capacitor Ca because of negative tempperature coefficient thermistor NTC connection, in parallel with the polarity free capacitor Cb in power adjustments unit 4 again, therefore negative tempperature coefficient thermistor NTC, the total capacitance quantitative change of polarity free capacitor Ca and polarity free capacitor Cb is large, it is elongated that the RC that this total capacitance and resistance R b are formed discharges and recharges the time, the phase place that sluggish bidirectional trigger diode DIAC triggers bidirectional triode thyristor TRIAC, the power of whole lamp is reduced, when the power of whole lamp reduces, electric current through current-limiting resistance Ra diminishes, the heat producing tails off, make the impedance of negative tempperature coefficient thermistor NTC become large, polarity free capacitor Ca because of negative tempperature coefficient thermistor NTC connection, in parallel with the polarity free capacitor Cb in power adjustments unit 4, therefore negative tempperature coefficient thermistor NTC, the total capacitance of polarity free capacitor Ca and polarity free capacitor Cb diminishes, the RC that this total capacitance and resistance R b are formed discharges and recharges the time and shortens, the phase place that reach bidirectional trigger diode DIAC triggers bidirectional triode thyristor TRIAC, the power of this whole lamp is raise, more than action goes round and begins again, so as to automatically increasing or decreasing the power of this whole lamp, with lightness stabilized or (direct current or interchange) LED lamp plate is reached to the object of ballast.
Above-mentioned power supply can be civil power, that is to say the civil power that can this kind of LED lamp with bidirectional triode thyristor ballast can directly connect 220V.
Because framework of the present utility model is simplified, do not use electrochemical capacitor, inductance, transformer and chip, so failure rate far below the LED lamp that adopts traditional switch formula drive circuit, reaches without radio frequency interference, high brightness, the advantage such as operating current is little, low-cost, circuit reliability is high and whole structure is good.
Above embodiment is just explanation rather than restriction the utility model, and the equivalence of doing according to the method described in the utility model patent claim therefore all changes or modifies, and is included in the utility model patent claim.
Claims (10)
1. the LED lamp with bidirectional triode thyristor ballast, it is characterized in that: comprise thermoinduction unit, power adjustments unit, direct-current LED lamp plate and bridge rectifier, described thermoinduction unit and bridge rectifier, direct-current LED lamp plate are electrically connected successively, and described power adjustments unit is electrically connected power supply and described bridge rectifier.
2. a kind of LED lamp with bidirectional triode thyristor ballast according to claim 1, is characterized in that: described thermoinduction unit comprises thermistor and current-limiting resistance, and described thermistor and current-limiting resistance are coupled.
3. a kind of LED lamp with bidirectional triode thyristor ballast according to claim 2, is characterized in that: described thermistor is pasted on described current-limiting resistance by heat-conducting glue; Or described thermistor is pasted sheet type thermistor, described current-limiting resistance is SMD current-limiting resistance, and this pasted sheet type thermistor and SMD current-limiting resistance are welded on the pad of mutual vicinity.
4. a kind of LED lamp with bidirectional triode thyristor ballast according to claim 3, is characterized in that: described thermistor is negative tempperature coefficient thermistor.
5. a kind of LED lamp with bidirectional triode thyristor ballast according to claim 1, is characterized in that: described power adjustments unit comprises polarity free capacitor, resistance, bidirectional trigger diode and bidirectional triode thyristor.
6. the LED lamp with bidirectional triode thyristor ballast, it is characterized in that: comprise thermoinduction unit, power adjustments unit and AC LED lamp plate, described thermoinduction unit and AC LED lamp plate are electrically connected, and described power adjustments unit is electrically connected power supply and described AC LED lamp plate.
7. a kind of LED lamp with bidirectional triode thyristor ballast according to claim 6, is characterized in that: described thermoinduction unit comprises thermistor and current-limiting resistance, and described thermistor and current-limiting resistance are coupled.
8. a kind of LED lamp with bidirectional triode thyristor ballast according to claim 7, is characterized in that: described thermistor is pasted on described current-limiting resistance by heat-conducting glue; Or described thermistor is pasted sheet type thermistor, described current-limiting resistance is SMD current-limiting resistance, and this pasted sheet type thermistor and SMD current-limiting resistance are welded on the pad of mutual vicinity.
9. a kind of LED lamp with bidirectional triode thyristor ballast according to claim 8, is characterized in that: described thermistor is negative tempperature coefficient thermistor.
10. a kind of LED lamp with bidirectional triode thyristor ballast according to claim 6, is characterized in that: described power adjustments unit comprises polarity free capacitor, resistance, bidirectional trigger diode and bidirectional triode thyristor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320527914.4U CN203435199U (en) | 2013-08-28 | 2013-08-28 | Bidirectional silicon controlled rectifier ballasted LED lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320527914.4U CN203435199U (en) | 2013-08-28 | 2013-08-28 | Bidirectional silicon controlled rectifier ballasted LED lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203435199U true CN203435199U (en) | 2014-02-12 |
Family
ID=50064208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320527914.4U Expired - Fee Related CN203435199U (en) | 2013-08-28 | 2013-08-28 | Bidirectional silicon controlled rectifier ballasted LED lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203435199U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103415124A (en) * | 2013-08-28 | 2013-11-27 | 林士乾 | LED lamp achieving ballasting through bi-directional thyristor |
-
2013
- 2013-08-28 CN CN201320527914.4U patent/CN203435199U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103415124A (en) * | 2013-08-28 | 2013-11-27 | 林士乾 | LED lamp achieving ballasting through bi-directional thyristor |
| CN103415124B (en) * | 2013-08-28 | 2016-10-05 | 林士乾 | A kind of LED with bidirectional triode thyristor ballast |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201550315U (en) | LED driving circuit | |
| CN202488799U (en) | Illumination system | |
| CN204518177U (en) | A kind of LED drive power circuit | |
| CN103108457B (en) | High-frequency driver of light-emitting diode (LED) lamp | |
| CN203086799U (en) | LED driving circuit under double-loop control | |
| CN103415124B (en) | A kind of LED with bidirectional triode thyristor ballast | |
| CN204652745U (en) | A kind of constant current driver circuit for LED | |
| CN203435199U (en) | Bidirectional silicon controlled rectifier ballasted LED lamp | |
| CN201995170U (en) | Large power light-emitting diode (LED) constant power source | |
| CN101695207A (en) | LED tube circuit | |
| CN203104911U (en) | High-power LED (light emitting diode) drive power supply | |
| CN204145795U (en) | Have APFC function without working frequency ripple wave LED streetlamp power source | |
| CN104039043A (en) | Non-polar capacitor voltage reducing and dividing rectification linear light-emitting diode (LED) driving circuit | |
| CN201479415U (en) | LED lamp tube circuit | |
| CN104735837A (en) | LED street lamp power supply without power frequency ripples and with APFC function | |
| CN202652650U (en) | Hybrid integrated LED constant-current power circuit | |
| CN104582115A (en) | Light-emitting device | |
| CN203560762U (en) | LED PAR lamp | |
| CN204761762U (en) | LED dimming control circuit | |
| CN101795520A (en) | Adjustable power inverter self-adapted to silicon-controlled voltage regulation mode | |
| CN203718432U (en) | LED support fluorescent lamp | |
| CN203574910U (en) | LED bulb lamp | |
| CN203243575U (en) | High-power LED lighting driver | |
| CN202907287U (en) | LED silicon-controlled light-dimming driving circuit based on IW3602 chip | |
| CN203590563U (en) | Circuit for raising power factor of AC drive LEDs |
Legal Events
| 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: 20140212 Termination date: 20150828 |
|
| EXPY | Termination of patent right or utility model |