CN103260290A - Light-emitting diode (LED) fluorescent lamp and circuit module thereof - Google Patents
Light-emitting diode (LED) fluorescent lamp and circuit module thereof Download PDFInfo
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- CN103260290A CN103260290A CN2012100360811A CN201210036081A CN103260290A CN 103260290 A CN103260290 A CN 103260290A CN 2012100360811 A CN2012100360811 A CN 2012100360811A CN 201210036081 A CN201210036081 A CN 201210036081A CN 103260290 A CN103260290 A CN 103260290A
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Abstract
The invention relates to a light-emitting diode (LED) fluorescent lamp and a circuit module thereof. The circuit module is arranged in a lamp tube body and comprises a rectification unit, a current stabilization and voltage stabilization unit and an LED unit. The lamp tube body can be installed on a lamp base of the fluorescent lamp, the rectification unit is provided with a first power supply end and a second power supply end, the first power supply end and the second power supply end are electrically connected with electrodes of the lamp tube body respectively to receive a mains supply through the electrodes respectively, the mains supply is converted into sinusoidal direct voltage through the rectification unit, the current stabilization and voltage stabilization unit is electrically connected with the rectification unit to covert the mains supply into a working power supply, and the LED unit is electrically connected with the current stabilization and voltage stabilization unit to receive the working power supply to emit light. Therefore, the LED unit and the circuit module can be directly installed on the lamp base of the fluorescent lamp for use without removal of a starter and a ballast on the lamp base of the fluorescent lamp in a pulled mode.
Description
Technical field
The present invention relates to a kind of led circuit module, particularly a kind of LED fluorescent lamp and circuit module thereof.
Background technology
Please refer to shown in Figure 5, disclose an existing fluorescent tube, fluorescent tube 40 has opposite end, each end has one first electrode 41 and one second electrode 42 respectively, and be connected a filament 43 between first electrode 41 and second electrode 42, fluorescent tube 40 inside have inert gas and mercury vapor, and coat with lacquer at the inner surface coating fluorescent of fluorescent tube 40.
Have a starter 51 and a stabilizer 52 on the existing fluorescent lamp base.After fluorescent lamp pipe 40 is installed in lamp socket, starter 51 will be electrically connected between first electrode 41 at fluorescent tube 40 two ends, second electrode 42 at fluorescent tube 40 two ends is for being connected to a mains supply Vac, and wherein this stabilizer 52 is connected electrically between mains supply Vac and one of them second electrode 42.
After mains supply Vac provides power supply, the switch 50 of starter 51 cuts out, make mains supply Vac produce high temperature by filament 43 and assist inert gas ionization in the fluorescent tube, the electronics that produces during inert gas ionization and mercury vapor react and produce ultraviolet light, can produce visible light after fluorescent lacquer in the fluorescent tube absorbs ultraviolet light, visible light namely uses as illumination; 52 of stabilizers are used for stable electric current by fluorescent tube.
Yet, containing a large amount of mercury vapors in the fluorescent tube, discarded fluorescent tube is if subsequent recovery is dealt with improperly, and mercury vapor will evaporate in the air and pollute.The pollution problem that causes in view of the traditional fluorescent lamp pipe, light-emitting diode (LED) itself namely can be used as light source component, its relative traditional fluorescent lamp pipe can reduce environmental pollution, and therefore how light-emitting diode being applied in the traditional fluorescent lamp lamp socket is technical task to be solved by this invention.
Summary of the invention
Therefore main purpose of the present invention provides a kind of LED fluorescent lamp and circuit module thereof, by light-emitting diode as light source component, in the hope of improving the environmental hazard that traditional fluorescent lamp adopts chemical substances such as mercury, fluorescent lacquer to bring.
For reaching above-mentioned purpose, the technology used in the present invention means are to make this LED fluorescent lamp include:
One lamp tube body has a relative first end and a second end, and each end has two electrodes; And
One circuit module is located in this lamp tube body, and it includes:
One rectification unit includes:
One first power end is electrically connected an electrode of this lamp tube body first end;
One second source end is electrically connected another electrode of this lamp tube body first end;
One the 3rd power end is electrically connected two electrodes of this lamp tube body the second end; And
Two power output ends are exported a string ripple direct voltage;
One constant current constant voltage unit includes:
Two inputs are electrically connected two power output ends of this rectification unit respectively to receive this string ripple direct voltage; And
Two outputs are exported a working power; And
One LED unit is electrically connected two outputs of this constant current constant voltage unit, and is luminous to receive this working power.
For reaching above-mentioned purpose, the technology used in the present invention means are to make the circuit module of this LED fluorescent lamp be used for connecting a lamp tube body, and this lamp tube body has a relative first end and a second end, and each end has two electrodes, and this circuit module includes:
One rectification unit includes:
One first power end is electrically connected an electrode of this lamp tube body first end;
One second source end is electrically connected another electrode of this lamp tube body first end;
One the 3rd power end is electrically connected two electrodes of this lamp tube body the second end; And
Two power output ends are exported a string ripple direct voltage;
One constant current constant voltage unit includes:
Two inputs are electrically connected two power output ends of this rectification unit respectively to receive this string ripple direct voltage; And
Two outputs are exported a working power; And
One LED unit is electrically connected two outputs of this constant current constant voltage unit, and is luminous to receive this working power.
After the present invention is installed on fluorescent lamp base, first power end of this rectification unit or second source end all can be for receiving mains supply, this constant current constant voltage unit is converted to a working power with mains supply, this LED unit receives this working power and is luminous, so, the present invention can be set directly at existing fluorescent lamp base and must not change existing starter, stabilizer circuit, uses the replacement traditional fluorescent lamp.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Description of drawings
Fig. 1: the circuit block diagram of LED fluorescent lamp of the present invention;
Fig. 2: the circuit diagram of the present invention's first preferred embodiment;
Fig. 3: the circuit diagram of the present invention's second preferred embodiment;
The schematic equivalent circuit of Fig. 4: Fig. 3;
Fig. 5: the winding diagram of existing fluorescent lamp, starter and stabilizer.
Wherein, Reference numeral
10 lamp tube body, 11 first ends
12 the second ends 111,112 electrodes
121,122 electrodes, 20 circuit modules
21 rectification units, 211 first diodes
212 second diodes 213 the 3rd diode
214 the 4th diodes 215 the 5th diode
216 the 6th diodes, 22 constant current constant voltage unit
40 light modulation pipes, 41 first electrodes
42 second electrodes, 43 filaments
51 starters, 50 switches
52 stabilizers
Embodiment
Below in conjunction with accompanying drawing structural principle of the present invention and operation principle are done concrete description:
Please refer to Fig. 1 and shown in Figure 2, the preferred embodiment circuit block diagram of LED fluorescent lamp of the present invention, this LED fluorescent lamp include a lamp tube body 10 and a circuit module 20.
This lamp tube body 10 has a relative first end 11 and a second end 12, and first end 11 has two electrodes 111,112, and the second end 12 has two electrodes 121,122.
This circuit module 20 is located in this lamp tube body 10, and it includes a rectification unit 21, a constant current constant voltage unit 22 and a LED unit 23.
This rectification unit 21 includes one first power end V1, a second source end V2, one the 3rd power end V3 and two power output end D1, D2.
This first power end V1 is electrically connected an electrode 111 of these lamp tube body 10 first ends 11; This second source end V2 is electrically connected another electrode 112 of these lamp tube body 10 first ends 11; The 3rd power end V3 is electrically connected two electrodes 121,122 of these lamp tube body 10 the second ends 12; This first, second and the 3rd power end V1, V2, V3 be connected to mains supply Vac respectively, this rectification unit 21 is exported this string ripple direct voltage by this two power output end D1, D2 after mains supply Vac is converted to a string ripple direct voltage.
This constant current constant voltage unit 22 includes two input R1, R2 and two output R3, R4, this two input R1, R2 are electrically connected two power output end D1, the D2 of this rectification unit 21 respectively to receive this string ripple direct voltage, this working power is exported by this two output R3, R4 after this string ripple direct voltage is converted to a working power in this constant current constant voltage unit 22.
Two output R3, R4 that this LED unit 23 is electrically connected these constant current constant voltage unit 22 are to receive this working power, and this LED unit 23 can be in series or in parallel to form by a plurality of LED elements, and the LED element receives working power and luminous.
Please refer to shown in Figure 2ly, in first preferred embodiment, this rectification unit is a half-wave rectifier, and it includes one first diode 211 and one second diode 212.
This first diode 211 includes an anode and a negative electrode, and this anode is as this first power end V1, and this negative electrode is as a power output end D1 and be electrically connected an input R1 of this constant current constant voltage unit 22; This second diode 212 includes an anode and a negative electrode, and this anode is as this second source end V2, and this cathodic electricity connects the negative electrode of this first diode 211; The 3rd power end V3, another power output end D2 of this rectification unit 21 and another input R2 of this constant current constant voltage unit 22 are short circuit.
After first preferred embodiment is installed on a lamp socket, suppose that the first power end V1 is electrically connected to starter and second source end V2 is electrically connected to civil power electricity power supply.If the switch opens of starter, this first power end V1 is not electrically connected to any element will make first diode 211 and constant current constant voltage unit 22 form open circuit, and second diode 212, constant current constant voltage unit 22 and LED unit 23 will constitute a loop with mains supply, mains supply forms a half-wave direct voltage by second diode, 212 backs, this half-wave DC voltage forms working powers by 22 backs, this constant current constant voltage unit, and this LED unit 23 namely receives this working power and luminous; If the switch of starter cuts out, the input R2 of the anode of this first diode 211 and constant current constant voltage unit 22 forms short circuit, this first diode 211 namely is connected between two input R1, the R2 of constant current constant voltage unit 22 and forms in parallel with this constant current constant voltage unit 22, first diode 211 of this moment does not influence the loop that is made of second diode 212, constant current constant voltage unit 22 and LED unit 23, and LED unit 23 still can be from the constant current constant voltage unit 22 receives working powers and luminous.
Hold above-mentionedly, suppose that second source end V2 is electrically connected to starter and the first power end V1 is electrically connected to civil power electricity power supply, in like manner, if the switch opens of starter, first diode 211, constant current constant voltage unit 22 will constitute a loop with mains supply with LED unit 23; If the switch of starter cuts out, second diode 212 will be connected between two input R1, the R2 of constant current constant voltage unit 22 and form in parallelly with this constant current constant voltage unit 22, and second diode 212 of this moment does not influence the loop that is made of first diode 211, constant current constant voltage unit 22 and LED unit 23.
Please refer to shown in Figure 3, in second preferred embodiment, this rectification unit is a full-wave rectifier, it includes one first diode 211, one second diode 212, one the 3rd diode 213, one the 4th diode 214, one the 5th diode 215 and one the 6th diode 216, and those diodes 211～216 have an anode and a negative electrode respectively.
The anode of this first diode 211 is as this first power end V1, and these first diode, 211 negative electrodes are as a power output end D1 and be electrically connected an input R1 of this constant current constant voltage unit 22; The cathodic electricity of this second diode 212 connects the anode of this first diode 211, and the anode of this second diode 212 is as another power output end D2 and be electrically connected another input R2 of this constant current constant voltage unit 22; The cathodic electricity of the 3rd diode 213 connects the negative electrode of this first diode 211, and the anode of the 3rd diode 213 is electrically connected two electrodes 121,122 of lamp tube body 10 the second ends 12 as the 3rd power end V3; The anode of the 4th diode 214 is electrically connected the anode of this second diode 212, and the cathodic electricity of the 4th diode 214 connects the anode of the 3rd diode 213; The anode of the 5th diode 215 is as this second source end V2, and the cathodic electricity of the 5th diode 215 connects the negative electrode of the 3rd diode 213; The cathodic electricity of the 6th diode 216 connects the anode of the 5th diode 215, and the anode of the 6th diode 216 is electrically connected the anode of the 4th diode 214.
In second preferred embodiment, after second preferred embodiment is installed on a lamp socket, suppose that the first power end V1 is electrically connected to starter and second source end V2 is electrically connected to civil power electricity power supply.If the switch opens of starter, this first power end V1 be not electrically connected to any element will make first, second diode 211,212 and constant current constant voltage unit 22 form open circuit, and the 3rd～the 6th diode diode 213～216 constitutes a full-wave rectifier, this full-wave rectifier, constant current constant voltage unit 22 constitute a loop with LED unit 23 and mains supply, mains supply is by forming a full-wave direct current voltage behind this full-wave rectifier, this full-wave direct current voltage forms working powers by 22 backs, this constant current constant voltage unit, and this LED unit 23 namely receives this working power and luminous.
If the switch of starter cuts out, the electrode 111 of lamp tube body 10 first ends 11 is electrically connected the electrode 121 of the second end 12, this first power end V1 and the 3rd power end V3 form short circuit, the equivalent circuit diagram of this moment please refer to shown in Figure 4, first diode 211 is parallel to the 3rd diode 213, second diode 212 is parallel to the 4th diode 214, so, all diodes 211～216 constitute a full-wave rectifier 30 and can produce full-wave direct current voltage, and constant current constant voltage unit 22 can be that working power is luminous to drive this LED unit 23 with the full-wave direct current voltage transitions.
As shown in Figure 3, suppose second source end V2 to be electrically connected to starter and the first power end V1 is electrically connected to civil power electricity power supply, in like manner, if the switch opens of starter, the the 5th and the 6th diode 215,216 will form open circuit with the 3rd power end V3, and the first, second, third and the 4th diode 211～214 constitutes a full-wave rectifier; If the switch of starter cuts out, this second source end V2 and the 3rd power end V3 will form short circuit, and the 5th diode 215 will be parallel to the 3rd diode 213, the six diodes 216 will be parallel to the 4th diode 214, so all diodes 211～216 constitute a full-wave rectifier.
Comprehensive the above, the present invention's LED fluorescent lamp can directly be applied on the present fluorescent lamp base.When the present invention is installed on the lamp socket, no matter be that first power end or second source end are electrically connected starter or the stabilizer on the lamp socket, no matter and the switch on the starter is for opening or closing, all can not influencing constant current constant voltage unit 22, to produce working powers luminous with driving LED unit 23.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (6)
1. a LED fluorescent lamp is characterized in that, includes:
One lamp tube body has a relative first end and a second end, and each end has two electrodes; And
One circuit module is located in this lamp tube body, and it includes:
One rectification unit includes:
One first power end is electrically connected an electrode of this lamp tube body first end;
One second source end is electrically connected another electrode of this lamp tube body first end;
One the 3rd power end is electrically connected two electrodes of this lamp tube body the second end; And
Two power output ends are exported a string ripple direct voltage;
One constant current constant voltage unit includes:
Two inputs are electrically connected two power output ends of this rectification unit respectively to receive this string ripple direct voltage; And
Two outputs are exported a working power; And
One LED unit is electrically connected two outputs of this constant current constant voltage unit, and is luminous to receive this working power.
2. LED fluorescent lamp according to claim 1 is characterized in that, this rectification unit comprises:
One first diode includes:
One anode is as this first power end; And
One negative electrode is as a power output end and be electrically connected an input of this constant current constant voltage unit;
One second diode includes:
One anode is as this second source end; And
One negative electrode is electrically connected the negative electrode of this first diode;
Another input of the 3rd power end of this rectification unit, another power output end and this constant current constant voltage unit is short circuit.
3. LED fluorescent lamp according to claim 1 is characterized in that, this rectification unit comprises:
One first diode includes:
One anode is as this first power end; And
One negative electrode is as a power output end and be electrically connected the input of this constant current constant voltage unit;
One second diode includes:
One negative electrode is electrically connected the anode of this first diode; And
One anode is as another power output end and be electrically connected the input of this constant current constant voltage unit;
One the 3rd diode includes:
One negative electrode is electrically connected the negative electrode of this first diode; And
One anode is as the 3rd power end;
One the 4th diode includes:
One anode is electrically connected the anode of this second diode; And
One negative electrode is electrically connected the anode of the 3rd diode;
One the 5th diode includes:
One anode is as this second source end; And
One negative electrode is electrically connected the negative electrode of the 3rd diode;
One the 6th diode includes:
One negative electrode is electrically connected the anode of the 5th diode; And
One anode is electrically connected the anode of the 4th diode.
4. the circuit module of a LED fluorescent lamp is used for connecting a lamp tube body, and this lamp tube body has a relative first end and a second end, and each end has two electrodes, it is characterized in that, this circuit module includes:
One rectification unit includes:
One first power end is electrically connected an electrode of this lamp tube body first end;
One second source end is electrically connected another electrode of this lamp tube body first end;
One the 3rd power end is electrically connected two electrodes of this lamp tube body the second end; And
Two power output ends are exported a string ripple direct voltage;
One constant current constant voltage unit includes:
Two inputs are electrically connected two power output ends of this rectification unit respectively to receive this string ripple direct voltage; And
Two outputs are exported a working power; And
One LED unit is electrically connected two outputs of this constant current constant voltage unit, and is luminous to receive this working power.
5. according to the circuit module of the described LED fluorescent lamp of claim 4, it is characterized in that this rectification unit comprises:
One first diode includes:
One anode is as this first power end; And
One negative electrode is as a power output end and be electrically connected an input of this constant current constant voltage unit;
One second diode includes:
One anode is as this second source end; And
One negative electrode is electrically connected the negative electrode of this first diode;
Another input of the 3rd power end of this rectification unit, another power output end and this constant current constant voltage unit is short circuit.
6. according to the circuit module of the described LED fluorescent lamp of claim 4, it is characterized in that this rectification unit comprises:
One first diode includes:
One anode is as this first power end; And
One negative electrode is as a power output end and be electrically connected the input of this constant current constant voltage unit;
One second diode includes:
One negative electrode is electrically connected the anode of this first diode; And
One anode is as another power output end and be electrically connected the input of this constant current constant voltage unit;
One the 3rd diode includes:
One negative electrode is electrically connected the negative electrode of this first diode; And
One anode is as the 3rd power end;
One the 4th diode includes:
One anode is electrically connected the anode of this second diode; And
One negative electrode is electrically connected the anode of the 3rd diode;
One the 5th diode includes:
One anode is as this second source end; And
One negative electrode is electrically connected the negative electrode of the 3rd diode;
One the 6th diode includes:
One negative electrode is electrically connected the anode of the 5th diode; And
One anode is electrically connected the anode of the 4th diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210036081.1A CN103260290B (en) | 2012-02-15 | 2012-02-15 | Light-emitting diode (LED) fluorescent lamp and circuit module thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210036081.1A CN103260290B (en) | 2012-02-15 | 2012-02-15 | Light-emitting diode (LED) fluorescent lamp and circuit module thereof |
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| Publication Number | Publication Date |
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| CN103260290A true CN103260290A (en) | 2013-08-21 |
| CN103260290B CN103260290B (en) | 2015-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210036081.1A Expired - Fee Related CN103260290B (en) | 2012-02-15 | 2012-02-15 | Light-emitting diode (LED) fluorescent lamp and circuit module thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008277188A (en) * | 2007-05-01 | 2008-11-13 | Sharp Corp | Led illumination light, and lamp fixture using led illumination light |
| CN201207738Y (en) * | 2008-01-11 | 2009-03-11 | 白浩秦 | Electronic type LED power supply device |
| TW201026141A (en) * | 2008-12-31 | 2010-07-01 | Chi Mei Lighting Tech Corp | Illumination device |
| TWM394665U (en) * | 2010-06-11 | 2010-12-11 | Azurelighting Technologies Inc | T8 LED lamp tube protection circuit |
| CN101963335A (en) * | 2009-07-21 | 2011-02-02 | 浩康科技(大中华)有限公司 | LED lamp tube |
-
2012
- 2012-02-15 CN CN201210036081.1A patent/CN103260290B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008277188A (en) * | 2007-05-01 | 2008-11-13 | Sharp Corp | Led illumination light, and lamp fixture using led illumination light |
| CN201207738Y (en) * | 2008-01-11 | 2009-03-11 | 白浩秦 | Electronic type LED power supply device |
| TW201026141A (en) * | 2008-12-31 | 2010-07-01 | Chi Mei Lighting Tech Corp | Illumination device |
| CN101963335A (en) * | 2009-07-21 | 2011-02-02 | 浩康科技(大中华)有限公司 | LED lamp tube |
| TWM394665U (en) * | 2010-06-11 | 2010-12-11 | Azurelighting Technologies Inc | T8 LED lamp tube protection circuit |
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| CN103260290B (en) | 2015-04-08 |
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