CN203027563U - Alternating-current LED (Light Emitting Diode) fluorescent lamp - Google Patents
Alternating-current LED (Light Emitting Diode) fluorescent lamp Download PDFInfo
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- CN203027563U CN203027563U CN2012207424881U CN201220742488U CN203027563U CN 203027563 U CN203027563 U CN 203027563U CN 2012207424881 U CN2012207424881 U CN 2012207424881U CN 201220742488 U CN201220742488 U CN 201220742488U CN 203027563 U CN203027563 U CN 203027563U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The utility model provides an alternating-current LED (Light Emitting Diode) fluorescent lamp which is characterized by comprising lamp holders (3), an insulating sleeve (4), a heat radiator (7), an LED light source module (5) and an alternating-current driving device (8), wherein the lamp holders (3) are fixed at the two sides of the insulating sleeve (4) to form a closed space in the insulating sleeve (4); the heat radiator (7) is used for radiating heat of the alternating-current LED fluorescent lamp; the LED light source module (5) is placed into the closed space in the insulating sleeve (4); the alternating-current driving device (8) is arranged in the closed space of the insulating sleeve (4) and is electrically connected with the LED light source module (5); an alternating-current output end of the alternating-current driving device (8) is derived out by a wire; and the alternating-current driving device (8) can increase current conduction time in each alternating-current period and can filter current harmonics.
Description
Technical field
The utility model relates to a kind of alternating-current LED fluorescent lamp, and it is luminous that it adopts novel AC drive apparatus to drive.
Background technology
Along with the continuous progress of society, urbanization process is more and more faster, and resource consumption and environmental pollution are following, and becomes the key factor that hinders Community health's development, and the new technology of various raising efficiency of energy utilization, the demand of new equipment are increasing.At lighting field, LED semiconductor lighting technology is progressive under this background progressively to be accepted by market soon very much, and the application scale is increasing.During as light source of illumination device, the life-span of lighting device is not only depended on LED, also comprises the assemblies such as driving power as LED.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, the researcher improves existing DC power supply drive unit on the one hand, designs on the other hand the circuit of the brand-new direct driving LED of alternating current.
In the direct driving LED circuit engineering of published alternating current, be to use plurality of LEDs to connect into reverse parallel connection circuit or bridge rectifier mostly, perhaps adopt now popular on the market drive part by part technology, to satisfy the driving requirement of alternating current.But alternating current is according to certain frequency period fluctuation, and due to the existence of LED self cut-in voltage, only when instantaneous voltage surpassed cut-in voltage, LED just understood conducting and luminous.Otherwise LED is that cut-off is non-luminous.The sort circuit of prior art makes the luminous efficiency of LED very low, and or power factor is very low, and only have 0.5 left and right, or have serious stroboscopic, the fluctuation degree of depth 100%, injury eyes.
For these reasons, the alternating-current LED fluorescent lamp that need to provide a kind of novel used alternating current directly to drive is can solve the above-mentioned problems in the prior art.
The utility model content
Provided by the utility model showing a kind ofly drives without Switching Power Supply, the alternating-current LED fluorescent lamp that can directly use alternating current directly to drive.The beneficial effect of the novel alternating-current LED fluorescent lamp that provides of this use is that cost is low, volume is little, guarantee power factor greater than 0.9 prerequisite under, effectively solve stroboscopic, the protection eyes.
According to an aspect of the present utility model, a kind of alternating-current LED fluorescent lamp is provided, it is characterized in that, comprising: lamp socket (3); The both sides that insulating sleeve (4), described lamp socket (3) are fixed on described insulative (4) make it the inner confined space that forms; Radiator (7) is used for described alternating-current LED fluorescent lamp heat radiation; LED light source module (5), it is placed in the inner confined space of described insulative (4); And AC drive apparatus (8), it is arranged in the inner confined space of described insulative (4), and be electrically connected to described LED light source module (5), the alternating current input of described AC drive apparatus (8) is drawn by wire, wherein, described AC drive apparatus (8) can increase the current lead-through time in each ac period, and the filtering current harmonics.
Preferably, the arranged outside of described lamp socket (3) has electrode contact pin (9), and described AC drive apparatus (8) accesses this electrode contact pin (9) by wire.
Preferably, described radiator (7) also is arranged in the inner confined space of described insulative (4), and contacts with described LED light source module (5).
Preferably, the length of described radiator (7) is more than or equal to the length of described LED light source module (5), and the cross section of radiator (7) and LED light source module (5) forms described LED light source module (5) by radiator (7) half coating.
Preferably, described AC drive apparatus (8) comprising: rectification module (11) is connected to external ac power source, for the alternating current of inputting being carried out rectification and filtering with the output ripple direct current; And filtration module (12), it is connected to the positive-negative output end of described rectification module (11), with the unwanted current harmonics of further filtering.
Preferably; described AC drive apparatus (8) also comprises: overvoltage protective module (13); it is connected to the positive-negative output end of described rectification module (11); and connect described LED light source module; it can cut off immediately at input voltage circuit during higher than set point, thus protection LED light source module and whole circuit.
Preferably, described rectification module (11) comprises first input end (IN1), the second input (IN2), the first output (OUT1) and the second output (OUT2), the first branch road and the second branch road are connected in parallel between first input end and the first output, the first branch road comprises that its negative sense is all towards the diode (301,302 of two series connection of the first output; 401,402), the second branch road comprises the non-polar condenser (307 of series connection; 407) with the diode (304 of negative sense towards the first output; 404); Non-polar condenser (308 is connected in parallel between first input end and the second output; 408) with the diode (303 of forward towards the second output; 403); Be connected in parallel between the second input and the first output the 3rd branch road and the 4th branch road, the 3rd branch road comprise that its negative sense is all towards the diode (304,305 of two series connection of the first output; 404,405), the 4th branch road comprises the non-polar condenser (309 of series connection; 409) with the diode (301 of negative sense towards the first output; 401); Non-polar condenser (310 is connected in parallel between the second input and the second output; 410) with the diode (306 of forward towards the second output; 406).
Preferably, described filtration module (12) comprises filtering capacitor (311; 411).
preferably, described overvoltage protective module (13) comprising: transistor (420), current regulator diode (421), described transistor (420) and current regulator diode (421) and described LED light source module are connected in series between described the first output (OUT1) and described the second output (OUT2), and dividing potential drop submodule (131), two input respectively with described the first output (OUT1) be connected the second output (OUT2) and be connected, its output is connected with the grid of described transistor (420), by bleeder circuit, described transistor (420) is indicated the voltage swing of described pulsating dc voltage.
Preferably, described LED light source module is made of many low-voltage light sources, or adopts the high-voltage LED module of COB encapsulation.
Description of drawings
Fig. 1 is the structural representation of alternating-current LED fluorescent lamp of the present utility model;
Fig. 2 is the A-A profile along alternating-current LED fluorescent lamp shown in Figure 1;
Fig. 3 is a kind of preferred circuit figure of the utility model AC drive apparatus; And
Fig. 4 is the another kind of preferred circuit figure of the utility model AC drive apparatus.
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.
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 illustrates the structural representation of alternating-current LED fluorescent lamp of the present utility model.Fig. 2 is the A-A profile along alternating-current LED fluorescent lamp shown in Figure 1.
As shown in Figure 1, alternating-current LED fluorescent lamp of the present utility model comprises lamp socket 3, insulative 4, LED light source module 5 and radiator 7, the both sides that lamp socket 3 are fixed on insulative 4 make it the inner confined space that forms, and LED light source module 5 is placed in the confined space of insulative 4 inside, and described LED light source module 5 is gone back incoming transport drive unit 8, and the alternating current input of AC drive apparatus 8 is drawn by wire.Described AC drive apparatus 8 and 5 electrical connections of LED light source module, described LED light source module 5 can be made of many low-voltage light sources, can be also the high-voltage LED module that adopts the COB encapsulation.
Except the above embodiments, the relevant LED fluorescent tube of the utility model can also be done following improvement, still can be considered the different one or more embodiment of the utility model.The arranged outside of above-mentioned lamp socket 3 has electrode contact pin 9, and AC drive apparatus 8 accesses this electrode contact pin 9 by wire.And above-mentioned radiator 7 also is arranged in the confined space of insulative 4 inside, and the below that is placed in LED light source module 5 contacts with it.The length of while radiator 7 is more than or equal to the length of LED light source module 5, and radiator 7 becomes LED light source module 5 to be coated by radiator 7 half with the cross section of LED light source module 5.With reference to shown in Figure 2, above-mentioned radiator 7 can be set to the strip section shape again.The radiator 7 of this kind shape can be arranged on above-mentioned LED AC drive apparatus the below of radiator 7, and is placed in the confined space of insulative 4 inside.
Described AC drive apparatus and the electrical connection of LED light source module, Fig. 3 illustrates a kind of preferred circuit of described AC drive apparatus.
As shown in Figure 3, described AC drive apparatus 8 comprises rectification module 11.Rectification module 11 is connected to external ac power source, for the alternating current of inputting being carried out rectification and filtering with the output ripple direct current.Described rectification module 11 comprises first input end IN1, the second input IN2, the first output OUT1 and the second output OUT2.The first branch road and the second branch road are connected in parallel between first input end and the first output, the first branch road comprises that its negative sense is all towards the diode 301 of two series connection of the first output, 302, the second branch roads comprise the non-polar condenser 307 and the diode 304 of negative sense towards the first output of series connection.Non-polar condenser 308 and the diode 303 of forward towards the second output are connected in parallel between first input end and the second output.The 3rd branch road and the 4th branch road are connected in parallel between the second input and the first output, the 3rd branch road comprises that its negative sense is all towards the diode 304 of two series connection of the first output, 305, the four branch roads comprise the non-polar condenser 309 and the diode 301 of negative sense towards the first output of series connection.Non-polar condenser 310 and the diode 306 of forward towards the second output are connected in parallel between the second input and the second output.
Specifically, this circuit is comprised of the non-polar condenser 307,308,309,310 of 6 diodes 301,302,303,304,305,306 and 4 low capacities.Diode 301,302,303,304,305,306 can be common rectifier diode, can be also enough withstand voltage Schottky diode or other components and parts that can realize identical function.First input end IN1 is connected to diode 302 anodes, 303 negative terminals and capacitor 307 1 ends, 308 1 ends; Diode 302 negative terminals are connected to diode 301 anodes and capacitor 309 1 ends; Capacitor 307 other ends connect diode 304 anodes and diode 305 negative terminals; The other end of diode 305 anodes connection capacitors 309 and the second input IN2, the negative terminal of diode 306, an end of capacitor 310; Diode 301,304 negative terminal are connected with the first output OUT1; Diode 303,306 anode and capacitor 308,310 the other end are connected and are connected with the second output OUT2.
Alternately discharge and recharge by four capacitors 307,308,309,310, increased the current lead-through time in each ac period, make input current waveform as far as possible near input voltage waveform, reduced current harmonics, improved the power factor of circuit.
Described AC drive apparatus 8 also comprises filtration module 12, and it is connected to the positive-negative output end of described rectification module 11, with the unwanted current harmonics of further filtering.Usually in actual applications, can connect capacitor 311 as filtration module 12 between output OUT1 and OUT2, capacitor 311 can be dc capacitor or non-polar condenser, and the power factor of application circuit can not be subject to the impact of this filtering capacitor or affect very little.By above circuit, make the power factor of alternating-current LED fluorescent lamp of the present utility model reach more than 0.9, and efficiently solve the stroboscopic problem.
Fig. 4 illustrates the another kind of preferred circuit of described AC drive apparatus.
As shown in Figure 4, on the basis of Fig. 3, increased overvoltage protective module 13, this overvoltage protective module 13 is connected to the positive-negative output end of described rectification module 11, and connects described LED light source module.(determined by resistance 412,413 dividing potential drops) during higher than set point when input voltage, overvoltage protective module 13 cuts off transistor 420 immediately, and cut-off current effectively protects LED light source module and whole circuit not to be damaged, and has greatly improved the reliability of circuit.
Described overvoltage protective module 13 comprise transistor 420(at this for field effect transistor), current regulator diode 421 and dividing potential drop submodule 131.Current regulator diode 421 is used for limiting the current peak of circuit loop, and protection LED light source module prevents that electric current is excessive.Described transistor 420 and current regulator diode 421 and described LED light source module are connected in series between described the first output OUT1 and described the second output OUT2.
Two inputs of described dividing potential drop submodule 131 respectively with described the first output OUT1 be connected the second output OUT2 and be connected, its output is connected with the grid of described transistor 420, by bleeder circuit, described transistor 420 is indicated the voltage swing of described pulsating dc voltages.Specifically, dividing potential drop submodule 131 by resistance 412,413,414,415,416, voltage stabilizing didoe 417,418 and NPN triode 419 consist of as figure.
Circuit arrangement described in the utility model; can be to use resolution element to build according to circuit of the present invention; can be also to use the mode of integrated circuit to be integrated into an electronic component; all belong to protection scope of the present invention 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 (10)
1. an alternating-current LED fluorescent lamp, is characterized in that, comprising:
Lamp socket (3);
The both sides that insulating sleeve (4), described lamp socket (3) are fixed on described insulative (4) make it the inner confined space that forms;
Radiator (7) is used for described alternating-current LED fluorescent lamp heat radiation;
LED light source module (5), it is placed in the inner confined space of described insulative (4); And
AC drive apparatus (8), it is arranged in the inner confined space of described insulative (4), and is electrically connected to described LED light source module (5), and the alternating current input of described AC drive apparatus (8) is drawn by wire,
Wherein, described AC drive apparatus (8) can increase the current lead-through time in each ac period, and the filtering current harmonics.
2. alternating-current LED fluorescent lamp according to claim 1, is characterized in that, the arranged outside of described lamp socket (3) has electrode contact pin (9), and described AC drive apparatus (8) accesses this electrode contact pin (9) by wire.
3. alternating-current LED fluorescent lamp according to claim 1, is characterized in that, described radiator (7) also is arranged in the inner confined space of described insulative (4), and contacts with described LED light source module (5).
4. alternating-current LED fluorescent lamp according to claim 3, it is characterized in that, the length of described radiator (7) is more than or equal to the length of described LED light source module (5), and the cross section of radiator (7) and LED light source module (5) forms described LED light source module (5) by radiator (7) half coating.
5. alternating-current LED fluorescent lamp according to claim 1, is characterized in that, described AC drive apparatus (8) comprising:
Rectification module (11) is connected to external ac power source, for the alternating current of inputting being carried out rectification and filtering with the output ripple direct current; And
Filtration module (12), it is connected to the positive-negative output end of described rectification module (11), with the unwanted current harmonics of further filtering.
6. alternating-current LED fluorescent lamp according to claim 5, is characterized in that, described AC drive apparatus (8) also comprises:
Overvoltage protective module (13), it is connected to the positive-negative output end of described rectification module (11), and connects described LED light source module, and it can cut off immediately at input voltage circuit during higher than set point, thus protection LED light source module and whole circuit.
7. alternating-current LED fluorescent lamp according to claim 5, it is characterized in that, described rectification module (11) comprises first input end (IN1), the second input (IN2), the first output (OUT1) and the second output (OUT2), the first branch road and the second branch road are connected in parallel between first input end and the first output, the first branch road comprises that its negative sense is all towards the diode (301,302 of two series connection of the first output; 401,402), the second branch road comprises the non-polar condenser (307 of series connection; 407) with the diode (304 of negative sense towards the first output; 404); Non-polar condenser (308 is connected in parallel between first input end and the second output; 408) with the diode (303 of forward towards the second output; 403); Be connected in parallel between the second input and the first output the 3rd branch road and the 4th branch road, the 3rd branch road comprise that its negative sense is all towards the diode (304,305 of two series connection of the first output; 404,405), the 4th branch road comprises the non-polar condenser (309 of series connection; 409) with the diode (301 of negative sense towards the first output; 401); Non-polar condenser (310 is connected in parallel between the second input and the second output; 410) with the diode (306 of forward towards the second output; 406).
8. alternating-current LED fluorescent lamp according to claim 5, is characterized in that, described filtration module (12) comprises filtering capacitor (311; 411).
9. alternating-current LED fluorescent lamp according to claim 6, is characterized in that, described overvoltage protective module (13) comprising:
Transistor (420),
Current regulator diode (421), described transistor (420) and current regulator diode (421) and described LED light source module are connected in series between described the first output (OUT1) and described the second output (OUT2), and
Dividing potential drop submodule (131), two input respectively with described the first output (OUT1) be connected the second output (OUT2) and be connected, its output is connected with the grid of described transistor (420), by bleeder circuit, described transistor (420) is indicated the voltage swing of described pulsating dc voltage.
10. the described alternating-current LED fluorescent lamp of any one according to claim 1-9, is characterized in that, described LED light source module is made of many low-voltage light sources, or adopt the high-voltage LED module of COB encapsulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207424881U CN203027563U (en) | 2012-12-29 | 2012-12-29 | Alternating-current LED (Light Emitting Diode) fluorescent lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207424881U CN203027563U (en) | 2012-12-29 | 2012-12-29 | Alternating-current LED (Light Emitting Diode) fluorescent lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203027563U true CN203027563U (en) | 2013-06-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012207424881U Expired - Fee Related CN203027563U (en) | 2012-12-29 | 2012-12-29 | Alternating-current LED (Light Emitting Diode) fluorescent lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203027563U (en) |
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2012
- 2012-12-29 CN CN2012207424881U patent/CN203027563U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130626 Termination date: 20171229 |