CN203027561U - Alternating current driving device for LED (light-emitting diode) light source and LED bulb lamp - Google Patents
Alternating current driving device for LED (light-emitting diode) light source and LED bulb lamp Download PDFInfo
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- CN203027561U CN203027561U CN 201220742233 CN201220742233U CN203027561U CN 203027561 U CN203027561 U CN 203027561U CN 201220742233 CN201220742233 CN 201220742233 CN 201220742233 U CN201220742233 U CN 201220742233U CN 203027561 U CN203027561 U CN 203027561U
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Abstract
The utility model relates to an alternating current driving device for an LED (light-emitting diode) light source and an LED bulb lamp adopting the alternating current driving device. The alternating current driving device is used for providing a driving current for a first LED light source module (207) and a second LED light source module (211), and comprises a rectifier module (101), a voltage-dividing module (102) and a control module (103), wherein the rectifier module (101) is used for performing rectification on an input alternating current to output a pulsating direct current; the voltage-dividing module (102) is used for outputting a pulsating direct current voltage based on the pulsating direct current output by the rectifier module (101); and the control module (103) is used for controlling a series and parallel connection state of the first and the second light source modules (207 and 211) according to the pulsating direct voltage and further enabling the first and the second light modules (207 and 211) to emit light. According to the alternating current driving device disclosed by the utility model, full-voltage working can be realized, all LEDs can be completely turned on, and the alternating current driving device has the advantages of high power factor and long service life.
Description
Technical field
The utility model relates to a kind of AC drive apparatus for LED light source, and adopts this AC drive apparatus to drive luminous LED bulb lamp.
Background technology
At present, country vigorously advocates energy-saving and emission-reduction, adopts the illuminating product of LED light source at lighting field, develops rapidly with the characteristics of its good energy-conservation, low-carbon (LC) and environmental protection.
For the lighting device of LED as light source, the life-span of lighting device is not only depended on LED light source itself, also depends on the life-span of the assemblies such as driving power.In present application scheme, the bottleneck in LED lighting device life-span remains driving power.In order to reduce the driving power life-span to the impact of LED lamp life, feasible scheme is the existing DC power supply drive unit of improvement, perhaps designs the circuit of the brand-new direct driving LED of alternating current.
Most popular for ordinary populace is bulb lamp.The major defect that existing LED bulb lamp exists is that the driving life-span is short.Reason is, the current drive scheme that adopts on the market is traditional switch power technology, this power volume is larger, heat dispersion is poor, when this power technology is applied to the LED bulb lamp, it offers the narrow space of driving power, and operating ambient temperature is tended towards superiority (usually more than 60 ℃) as a result, has so directly caused the life-span of driving power to be reduced.On the other hand, the cost of Switching Power Supply is high, the EMC(electromagnetic compatibility) characteristic is poor, need to add auxiliary element.
Another defective of existing LED bulb lamp is substantially there is no the value of maintenance after damaging, need directly to change driving power, but due to the restriction that is subject to LED bulb lamp power supply cavity, the driving power of generally can only change and specify producer, specifying model, maintenance cost is high, process is complicated.
At present, also occurred some in prior art and exchanged direct driving LED circuit, it normally adopts the scheme of a string LED being carried out sectional management.Although this class drive circuit life-span is high, cost is low, can only be operated in just to reach ideal effect (for example desirable luminous flux and power) under rated voltage (AC220, AC110), thereby can not realize full voltage (AC85V to AC256V) work.In addition, this LED string can not all be lighted simultaneously, can only segmentation light, and causes that most of LED does not work within a work period, causes the wasting of resources, and manufacturing cost is high.
For these reasons, need to provide a kind of novel interchange direct driving LED circuit, can solve the above-mentioned problems in the prior art.
The utility model content
The purpose of this utility model is to provide a kind of novel LED light source AC drive apparatus, and drive luminous LED bulb lamp by this AC drive apparatus, to avoid the adopting traditional switch power technology as driving power, both keep the advantage of traditional LED AC driving circuit, and can well realize full voltage work again.
According to an aspect of the present utility model, a kind of AC drive apparatus for LED light source is provided, be used for providing drive current to the first LED light source module 207 and the second LED light source module 211, this AC drive apparatus comprises: rectification module 101, be connected to external ac power source, be used for the alternating current of input is carried out rectification with the output ripple direct current; Division module 102 is connected to the positive-negative output end of rectification module 101, based on described pulsating direct current electric current output ripple direct voltage; Control module 103 is connected to described division module 102 and described the first and second LED light source modules 207,211; Wherein, when described pulsating dc voltage rose to described the first and second LED light source modules 207,211 luminous voltage, described control module 103 was controlled described the first and second LED light source modules 207,211 and is in state in parallel and luminous; When described pulsating dc voltage rose to the twice of described luminous voltage, described control module 103 was controlled described the first and second LED light source modules 207,211 and is in series connection and luminous.
Wherein, described rectification module 101 comprises four rectifier diodes 201,202,203,204, and wherein every two rectifier diodes series connection forms respectively a branch road, and two branch circuit parallel connections form this rectification module 101.
Wherein, described division module 102 comprises two divider resistances that are connected in series 205,206.
Wherein, described control module 103 comprises: control device 212, its input are connected between described two divider resistances, are used for detecting in real time the voltage swing of described pulsating dc voltage; The first and second transistors 208,210, these two transistorized grids are connected respectively to the output of described control device, the first transistor 208 is connected between the anode of the negative terminal of the first LED light source module 207 and described division module 102, and transistor seconds 210 is connected between the negative terminal of the anode of the second LED light source module 211 and described division module 102; Diode 209 is connected between the anode of the negative terminal of described the first LED light source module 207 and the second LED light source module 211.
Wherein, when described control device 212 detected described pulsating dc voltage and rises to the luminous voltage of described LED light source module, it controlled first and second transistors 208,210 conductings, diode 209 cut-offs; When described control device 212 detected described pulsating dc voltage and rises to the twice of described luminous voltage, it controlled first and second transistors 208,210 cut-offs, diode 209 conductings.
According on the other hand of the present utility model, a kind of LED bulb lamp is provided, comprising: lamp socket 1, it is connected to external ac power source; AC drive apparatus 2 described according to aforementioned claim any one is arranged in the enclosure space of radiator (3) and lamp socket (1) formation, and it is electrically connected to lamp socket (1) to access outside AC power; Radiator 3, fixing or dismountable lamp socket 1 top of being arranged on forms from the osculum end to big opening end the horn-like of transition gradually; Light source circuit board 4 is arranged on the big opening end of radiator 3, and it is electrically connected to described AC drive apparatus 2; Lampshade 5, dismountable big opening end that is arranged on radiator 3 forms approximate ball bubble shape.
Wherein, be provided with the first LED light source module 207 and the second LED light source module 211 on described light source circuit board 4.
Optionally, state the first and second LED light source modules 207, the 211st, single low-voltage light source or the high-voltage LED module that adopts COB to encapsulate.
According to LED light source AC drive apparatus of the present utility model, avoid adopting the direct driving technologies that exchanges of traditional switch power technology and sectional management, can realize full voltage work, and realize that all LED all light within the same work period, have simultaneously higher power factor (greater than 0.95).Adopt the LED bulb lamp cost of this AC drive apparatus low, volume is little, power factor is high, steady quality is reliable, long working life.
Description of drawings
Fig. 1 has shown the exploded view of the utility model LED bulb lamp;
Fig. 2 has shown the circuit diagram that is used for the AC drive apparatus of LED light source in the utility model.
Embodiment
For making the purpose of this utility model, technical scheme and advantage more cheer and bright, below in conjunction with embodiment and with reference to accompanying drawing, the utility model is further described.Should be appreciated that, these descriptions are exemplary, and do not really want to limit scope of the present utility model.In addition, in the following description, omitted the description to known features and technology, to avoid unnecessarily obscuring concept of the present utility model.
Fig. 1 has shown the exploded view of the utility model LED bulb lamp.
As shown in Figure 1, LED bulb lamp of the present utility model comprises lamp socket 1, AC drive apparatus 2, radiator 3, light source circuit board 4 and lampshade 5.
Fixing or dismountable lamp socket 1 top of being arranged on of radiator 3.As shown in Figure 1, radiator 3 adopts heat sink material (for example aluminium) to make, form from the osculum end to big opening end the horn-like of transition gradually, be used for AC drive apparatus 2 and light source circuit board 4 are contained in wherein, distribute to the external world with the heat that these parts are produced.
Light source circuit board 4 is arranged on the big opening end of radiator 3, is used for the carrying LED light source.As shown in Figure 1, be provided with one or more groups LED light source module on light source circuit board 4, its output that is electrically connected to AC drive apparatus 2 by lead-in wire is to access drive current, driving LED light source luminescent when energising.In the utility model, described LED light source module can be single low-voltage light source, can be also the high-voltage LED module that adopts the COB encapsulation.
The dismountable big opening end that is arranged on radiator 3 of lampshade 5, be used for to the light that LED light source sends carry out transmission or softening, homogenizing is processed.As shown in Figure 1, lampshade 5 forms approximate ball bubble shape, forms the integral body of a sealing together with radiator 3 and lamp socket 1.
Below, introduce in detail the AC drive apparatus that the utility model LED bulb lamp adopts.
Fig. 2 has shown the circuit diagram that is used for the AC drive apparatus of LED light source in the utility model.
As shown in Figure 2, AC drive apparatus 2 of the present utility model is used for providing drive current luminous to drive it to LED light source, it comprises: rectification module 101, be connected to external ac power source, and be used for the alternating current of input is carried out rectification with the output ripple direct current; Division module 102 is connected to the positive-negative output end of rectification module 101, based on described pulsating direct current electric current output ripple direct voltage; Control module 103 is connected to described division module 102 and described the first and second LED light source modules 207,211.
Wherein, when described pulsating dc voltage rose to described the first and second LED light source modules 207,211 luminous voltage, described control module 103 was controlled described the first and second LED light source modules 207,211 and is in state in parallel and luminous; When described pulsating dc voltage rose to the twice of described luminous voltage, described control module 103 was controlled described the first and second LED light source modules 207,211 and is in series connection and luminous.
Specifically, described rectification module 101 comprises four rectifier diodes 201,202,203,204, and wherein every two rectifier diodes series connection forms respectively a branch road, and two branch circuit parallel connections form this rectification module 101.
Diode 201,202,203,204,209 can be common rectifier diode, can be also withstand voltage enough Schottky diode or other components and parts that can realize identical function.Transistor 208,210 can be N-MOSFET, can be also triode.
Described division module 102 comprises two divider resistances that are connected in series 205,206.Resistance 205 first ends are connected with the first end of resistance 206; Resistance 205 second ends and diode 201,203 negative terminal are connected.Resistance 206 second ends and diode 202,204 anode are connected; Resistance 205 first ends are connected with control device 212 with the first end of resistance 206; Control device 212 is connected with transistor 208,210 grid respectively.
Described control module 103 comprises control device 212, the first and second transistors 208,210 and diode 209.
The input of control device 212 is connected between described two divider resistances, is used for detecting in real time the voltage swing of described pulsating dc voltage.The first and second transistors 208,210 grid are connected respectively to the output of described control device, the first transistor 208 is connected between the anode of the negative terminal of the first LED light source module 207 and described division module 102, and transistor seconds 210 is connected between the negative terminal of the anode of the second LED light source module 211 and described division module 102.Diode 209 is connected between the anode of the negative terminal of described the first LED light source module 207 and the second LED light source module 211.
Specifically, as shown in Figure 2, the anode of the first LED light source module 207 and diode 201,203 negative terminal are connected; The anode of the second LED light source module 211 and diode 202,204 anode are connected.The anode of diode 209 is connected with the negative terminal of the first LED light source module 207; The negative terminal of diode 209 is connected with the anode of the second LED light source module 211.The drain electrode of transistor 208 is connected with the anode that the negative terminal of the first LED light source module 207 is connected with diode; The source electrode of transistor 208 and diode 202,204 anode and the negative terminal of LED light source module 211 of being connected are connected.The drain electrode of transistor 210 is connected with the anode of the first LED light source module 207; The negative terminal of the source electrode of transistor 210 and diode 209 be connected the anode of LED light source module 211 and be connected.
As shown in Figure 2, the first LED light source module 207 and the second LED light source module 211 that are arranged on light source circuit board 4 of 2 pairs of AC drive apparatus provides drive current luminous to drive it.
The below introduces the operation principle of AC drive apparatus.
In Fig. 2, the first and second LED light source modules 207,211 are formed by the series connection of one or more LED light sources respectively.Each LED light source has specified luminous voltage VF0, and when the tube voltage drop at LED light source two ends reached this luminous voltage VF0, this LED light source was luminous.Further, form the first and second LED light source modules 207,211 by the series connection of a plurality of LED light sources and have accordingly specified luminous voltage nVF0, n represents the quantity of the LED light source that is connected in series in the light source module.In the course of the work, on the first and second LED light source modules 207,211, the actual tube voltage drop that produces is respectively VF1, VF2, and when this tube voltage drop VF1, VF2 rose to the specified luminous voltage nVF0 of this light source module, this light source module can electrified light emitting.
After energising, the alternating current of AC power AC output produces the pulsating direct current electric current by diode 201,202,203,204 rectifications, this pulsating direct current electric current produces pulsating dc voltage at divider resistance 205,206 two ends, this pulsating dc voltage is input in control device 212 and the first and second LED light source modules 207,211 after by divider resistance 205,206 dividing potential drops, produce respectively tube voltage drop VF1, VF2 on the first and second LED light source modules 207,211, VF1 equals or is approximately equal to VF2.When tube voltage drop VF1, the VF2 of LED light source module rose to its specified luminous voltage nVF0, the LED light source meeting conducting in this group LED light source module was luminous.
Preferably, divider resistance 205,206 resistances equate or approximately equal, by the pulsating dc voltage exported after rectification module 11 rectifications via divider resistance 205,206 dividing potential drops.Control device 212 detects the voltage V/2 on divider resistance 206 in real time, and then the magnitude of voltage that can calculate on divider resistance 205,206 is V, and this magnitude of voltage is also the pulsating dc voltage V that exports after rectification module 11 rectifications.
When switching on the starting stage, the voltage V/2 that control device 212 detects on divider resistance 206 rises to (nVF0)/2, mean that namely the pulsating dc voltage V of described rectification module output is from 0 volt of luminous voltage nVF0 that rises to the LED light source module, this timed unit 212 is controlled transistor 208,210 conductings, diode 209 is in cut-off state, makes the first LED light source module 207 be in state in parallel with the second LED light source module 211.Like this, tube voltage drop VF1, VF2 on two LED light source modules all reach its luminous voltage, thereby make two LED modules all in running order.
When control device 212 detects voltage V/2 on divider resistance 206 and continues to rise to nVF0, the pulsating dc voltage V that namely means described rectification module output rises to the twice 2nVF0 of the luminous voltage of LED light source module from nVF0, this timed unit 212 is controlled transistor 208,210 cut-offs, diode 209 is in conducting state, makes the first LED light source module 207 and the second LED light source module 211 be in series connection.Like this, tube voltage drop VF1, VF2 on two LED light source modules all reach its luminous voltage, thereby make two LED modules all in running order.
By the control of above-mentioned AC drive apparatus, the work conducting voltage of the first and second LED light source modules can change at any time, thereby has realized the work of full voltage.And two LED light source modules can be worked in above-mentioned two kinds of operating states, have therefore realized that all LED work simultaneously.
In the circuit structure of above-mentioned AC drive apparatus, the forward voltage drop tube of LED light source module reduces by half, realized conducting when voltage is low, like this in a voltage cycle, voltage utilization improves greatly, thereby makes also corresponding raising (greater than 0.95) of power factor.
In addition, do not use needed electrochemical capacitor in the traditional switch power technology in above-mentioned AC drive apparatus, thereby long working life.In addition, do not use other electric capacity or inductance in this AC drive apparatus yet, thereby have good EMC characteristic.Due to the life-span usually above LED device life-span of semiconductor device, therefore, adopt the AC drive apparatus of foregoing circuit simple in structure, with low cost, long service life.
It should be noted, so long as adopt two groups of luminous various LED lighting devices of LED light source module all can adopt AC drive apparatus described in the utility model that drive current is provided.Therefore, the utility model AC drive apparatus also goes for the LED lighting device of other types except the LED bulb lamp that goes for the utility model and mention.
In addition; the circuit arrangement of the utility model AC drive apparatus can use resolution element to build according to circuit theory diagrams of the present utility model; can be also to use the mode of integrated circuit to be integrated into an electronic component, all belong to protection range of the present utility model.
Although described execution mode of the present utility model in detail, it should be understood that and to make various changes, replacement and change to execution mode of the present utility model in the situation that do not depart from spirit and scope of the present utility model.
Claims (8)
1. an AC drive apparatus that is used for LED light source, be used for providing drive current to the first LED light source module (207) and the second LED light source module (211), and this AC drive apparatus comprises:
Rectification module (101) is connected to external ac power source, is used for the alternating current of input is carried out rectification with the output ripple direct current;
Division module (102) is connected to the positive-negative output end of rectification module (101), based on described pulsating direct current electric current output ripple direct voltage;
Control module (103) is connected to described division module (102) and described the first and second LED light source modules (207,211);
Wherein, when described pulsating dc voltage rose to the luminous voltage of described the first and second LED light source modules (207,211), described control module (103) was controlled described the first and second LED light source modules (207,211) and is in state in parallel and luminous;
When described pulsating dc voltage rose to the twice of described luminous voltage, described control module (103) was controlled described the first and second LED light source modules (207,211) and is in series connection and luminous.
2. AC drive apparatus according to claim 1, described rectification module (101) comprises four rectifier diodes (201,202,203,204), wherein every two rectifier diodes series connection forms respectively a branch road, and two branch circuit parallel connections form this rectification module (101).
3. AC drive apparatus according to claim 1, described division module (102) comprises two divider resistances that are connected in series (205,206).
4. AC drive apparatus according to claim 1, described control module (103) comprising:
Control device (212), its input are connected between described two divider resistances, are used for detecting in real time the voltage swing of described pulsating dc voltage;
The first and second transistors (208,210), these two transistorized grids are connected respectively to the output of described control device, the first transistor (208) is connected between the anode of the negative terminal of the first LED light source module (207) and described division module (102), and transistor seconds (210) is connected between the negative terminal of the anode of the second LED light source module (211) and described division module (102);
Diode (209) is connected between the anode of the negative terminal of described the first LED light source module (207) and the second LED light source module (211).
5. AC drive apparatus according to claim 4, wherein,
When described control device (212) detected described pulsating dc voltage and rises to the luminous voltage of described LED light source module, it controlled the first and second transistors (208,210) conducting, diode (209) cut-off;
When described control device (212) detected described pulsating dc voltage and rises to the twice of described luminous voltage, it controlled first and second transistors (208,210) cut-off, diode (209) conducting.
6. LED bulb lamp comprises:
Lamp socket (1), it is connected to external ac power source;
According to the described AC drive apparatus of aforementioned claim any one (2), be arranged in the enclosure space of radiator (3) and lamp socket (1) formation, it is electrically connected to lamp socket (1) to access outside AC power;
Radiator (3), fixing or dismountable lamp socket (1) top of being arranged on forms from the osculum end to big opening end the horn-like of transition gradually;
Light source circuit board (4) is arranged on the big opening end of radiator (3), and it is electrically connected to described AC drive apparatus (2);
Lampshade (5), dismountable big opening end that is arranged on radiator (3) forms approximate ball bubble shape.
7. LED bulb lamp according to claim 6, be provided with the first LED light source module (207) and the second LED light source module (211) on described light source circuit board (4).
8. LED bulb lamp according to claim 7, stating the first and second LED light source modules (207,211) is single low-voltage light source or the high-voltage LED module that adopts the COB encapsulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220742233 CN203027561U (en) | 2012-12-28 | 2012-12-28 | Alternating current driving device for LED (light-emitting diode) light source and LED bulb lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220742233 CN203027561U (en) | 2012-12-28 | 2012-12-28 | Alternating current driving device for LED (light-emitting diode) light source and LED bulb lamp |
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| CN203027561U true CN203027561U (en) | 2013-06-26 |
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| CN 201220742233 Expired - Lifetime CN203027561U (en) | 2012-12-28 | 2012-12-28 | Alternating current driving device for LED (light-emitting diode) light source and LED bulb lamp |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486475A (en) * | 2013-09-27 | 2014-01-01 | 无锡商业职业技术学院 | Luminance-adjustable LED lamp |
| CN104717796A (en) * | 2013-12-11 | 2015-06-17 | 群高科技股份有限公司 | Control circuit, integrated circuit and lighting device with same |
| TWI555434B (en) * | 2014-09-10 | 2016-10-21 | 群高科技股份有限公司 | Control circuits, integrated circuits and illuminating apparatuses having the same |
| CN106875794A (en) * | 2017-03-29 | 2017-06-20 | 上海正远电子技术有限公司 | A kind of quick burst of pulses immunity test device of teaching consuming energy |
| CN107105535A (en) * | 2016-02-19 | 2017-08-29 | 上海俪德照明科技股份有限公司 | A kind of control system and its G9 LED bulbs for adjusting brightness |
| CN113709945A (en) * | 2021-08-27 | 2021-11-26 | 江西汇荣实业有限公司 | LED light-operated bulb lamp without switch |
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2012
- 2012-12-28 CN CN 201220742233 patent/CN203027561U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486475A (en) * | 2013-09-27 | 2014-01-01 | 无锡商业职业技术学院 | Luminance-adjustable LED lamp |
| CN104717796A (en) * | 2013-12-11 | 2015-06-17 | 群高科技股份有限公司 | Control circuit, integrated circuit and lighting device with same |
| CN104717796B (en) * | 2013-12-11 | 2017-06-23 | 群高科技股份有限公司 | Control circuit, integrated circuit and lighting device with same |
| TWI555434B (en) * | 2014-09-10 | 2016-10-21 | 群高科技股份有限公司 | Control circuits, integrated circuits and illuminating apparatuses having the same |
| CN107105535A (en) * | 2016-02-19 | 2017-08-29 | 上海俪德照明科技股份有限公司 | A kind of control system and its G9 LED bulbs for adjusting brightness |
| CN106875794A (en) * | 2017-03-29 | 2017-06-20 | 上海正远电子技术有限公司 | A kind of quick burst of pulses immunity test device of teaching consuming energy |
| CN106875794B (en) * | 2017-03-29 | 2023-04-18 | 敏业信息科技（上海）有限公司 | Teaching power consumption fast pulse burst immunity experimental device |
| CN113709945A (en) * | 2021-08-27 | 2021-11-26 | 江西汇荣实业有限公司 | LED light-operated bulb lamp without switch |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Alternating current driving device for LED (light-emitting diode) light source and LED bulb lamp Effective date of registration: 20140930 Granted publication date: 20130626 Pledgee: The Agricultural Bank of Chengdu branch of Limited by Share Ltd. Chinese Sichuan Pledgor: SICHUAN SUNFOR LIGHT Co.,Ltd. Registration number: 2014510000025 |
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