CN200950682Y - Novel highly effective low cost constant-current driver for LED lighting lamp - Google Patents

Novel highly effective low cost constant-current driver for LED lighting lamp Download PDF

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Publication number
CN200950682Y
CN200950682Y CNU2006200326543U CN200620032654U CN200950682Y CN 200950682 Y CN200950682 Y CN 200950682Y CN U2006200326543 U CNU2006200326543 U CN U2006200326543U CN 200620032654 U CN200620032654 U CN 200620032654U CN 200950682 Y CN200950682 Y CN 200950682Y
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China
Prior art keywords
circuit
resistance
diode
electric capacity
ground connection
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Expired - Fee Related
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CNU2006200326543U
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Chinese (zh)
Inventor
何继星
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何继星
戴文玉
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Priority to CNU2006200326543U priority Critical patent/CN200950682Y/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/30Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Abstract

The utility model relates to a new type of high efficiency, low-cost light-emitting diode lighting constant current driver, which effectively solves issues of low-cost and high efficiency. The technical solution is that the constant current driver comprises a shell and an external electric circuit module; the module adapterization shell has AC power input lines and DC power lines externally, which are connected with 220 V AC power supply and light-emitting diode lighting respectively. The internal circuit comprises a power supply circuit, an oscillator circuit, a load shelf-adjusting circuit, a protection circuit. The output terminal of the power circuit is connect with the input terminal of the oscillation circuit; the output terminal of the oscillation circuit is connected with the self-adjusting circuit and load protection circuit; the output terminal of the load circuit self-adjusting circuit is connected with a diode lighting; the structure of the utility modelis novel and unique, which is low cost, easy to produce, easy to install and high efficiency and energy saving with significant economic benefits.

Description

New and effective low-cost LED illuminating lamp constant-flow driver
One, technical field
The utility model relates to energy saving device for lighting, particularly a kind of new and effective low-cost LED illuminating lamp constant-flow driver.
Two, background technology
Energy shortage has been worldwide problem, and for this reason, how the saves energy source has been many problems of being concerned about.Existing many economize on electricity illumination articles for use, as energy-saving bulb, power saving fluorescent lamps and Energy Saving Control switch or the like, but owing to now adopt the consumed energies such as bulb of tungsten filament system big, life-span is short, can not effectively satisfy the requirement of energy-saving illumination, the existing for this reason existing light-emitting diode (LED) of little power consumption that adopts is made illuminating lamp, but such LED illuminating lamp requires constant-current driving, so that it has good working performance and long useful life, though existing have the switch mode power supply apparatus of employing can save a large amount of electric energy, for various reasons, as the cost height, the equipment complexity is installed and used inconvenience etc., and people's will is not use up in the use of LED illuminating lamp entirely.
Three, utility model content
At energy-conservation; the needs that reduce cost; the purpose of the utility model just provides a kind of new and effective low-cost LED illuminating lamp constant-flow driver; can effectively solve LED illuminating lamp low cost; energy-efficient problem; the technical scheme of its solution is; this constant-flow driver is made module by housing and its internal circuit and is formed; module housing has AC power incoming line and DC power supply output line outward; join with 220V AC power and LED illuminating lamp (light-emitting diode) respectively; said internal circuit is by power circuit; oscillating circuit; load self-adjusting circuit; protective circuit constitutes; the input of the output termination oscillating circuit of power circuit; output end of oscillating circuit is connected to load self-adjusting circuit and protective circuit; sending and receiving optical diode illuminating lamp on its load self-adjusting circuit dc output end; the utility model novel structure uniqueness; cost is low, easily produces, and is easy to install; energy-efficient, remarkable economic efficiency is arranged.
Four, description of drawings
Fig. 1 is a shape assumption diagram of the present utility model.
Fig. 2 is an internal circuit diagram of the present utility model.
Five, embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated.
Provide by Fig. 1, Fig. 2; the utility model is to make module by housing and its internal circuit to form; AC power (220V) incoming line 2 and DC power supply output line 3 are arranged outside the module housing 1; internal circuit is to be made of power circuit, oscillating circuit, load self-adjusting circuit and protective circuit; the input of the output termination oscillating circuit of power circuit; be connected to load self-adjusting circuit and protective circuit on the output end of oscillating circuit, sending and receiving optical diode illuminating lamp on its load self-adjusting circuit dc output end.Module can be high 21mm, and diameter is round or other shape of 42mm.
Said power circuit is by diode D 1-D 4Bridge rectifier that constitutes and the current-limiting resistance R on the input thereof 1Constitute, input termination alternating current 220V power supply, the input of output termination oscillating circuit, and through capacitor C 1Ground connection;
Said oscillating circuit is by triode Q 1, Q 2And resistance R 2, R 3, capacitor C 2, transformer B and photoelectricity coupling IC constitute triode Q 1Base stage meet diode D 5Negative pole, resistance R 2, capacitor C 2With triode Q 3Collector electrode, and through resistance R 2Meet the output and the triode Q of power circuit 1Collector electrode, triode Q 1Emitter meet diode D 5Positive pole, triode Q 2Emitter, diode D 6Negative pole and transformer B, and through diode D 6Ground connection, triode Q 2Base stage connect plate pipe (phototriode) end (1/2IC) of photoelectricity coupling IC, and through resistance R 4Connecting resistance R 3With transformer B, through resistance R 3Connect capacitor C 2, transformer B output is through resistance R 6Connect protective circuit;
Said protective circuit is by controllable silicon SCR, voltage stabilizing didoe DZ 1, resistance R 7, diode D 7Form with photoelectricity coupling IC, the controllable silicon SCR positive pole meets voltage stabilizing didoe DZ 1Negative pole and resistance R 6, gate plate connects capacitor C 3, resistance R 5, R 7And diode D 7, capacitor C 3, resistance R 5Ground connection in parallel, resistance R 7Ground connection, light-emitting diodes end (1/2IC) ground connection of photoelectricity coupling IC, diode D 7Connecting resistance R 8, capacitor C 6, resistance R 8Through resistance R 9Ground connection, capacitor C 6Ground connection; Said photoelectricity coupling IC is made up of two 1/2IC
Said load self-adjusting circuit is by voltage stabilizing didoe DZ 2, DZ 3DZ nConstitute voltage stabilizing didoe DZ 2Negative pole connects capacitor C 5, inductance L and DC output end V 0(+), and through capacitor C 5Ground connection, inductance L connects capacitor C 4With transformer B, DC output end V 0On be connected to LED 1, voltage stabilizing didoe DZ 3Anodal connecting resistance R 9(if having only a light-emitting diode, DZ 2Resistance R can be connected with the light-emitting diode negative pole 9), can be serially connected with a plurality of (n) voltage stabilizing didoe DZ on the dc output end nAnd LED (n), provide DZ among the figure 2, DZ 3DZ n, LED nAlso can constitute light-emitting diode row and make illuminating lamp usefulness.
Working condition of the present utility model is that the 220V alternating current is through resistance R 1Current-limiting protection is added in bridge rectifier D 1-D 4Two ends, rectification is after capacitor C 1Filtering becomes steadily, and direct current is added in switch generator triode Q 1On, by Q 1, B, C 2, R 2After the oscillating circuit starting of oscillation of forming, direct current is through Q 1, B is elementary to C 4, C 5Charging powers to the load simultaneously, and LED lights luminous.Along with the electric current that flows through LED increases gradually, sample resistance R 9Last pressure drop also raises gradually, when reaching set point, among the IC light-emitting diode conducting luminous, phototriode conducting in the IC is through resistance R 4To Q 2Base stage provides bias current, so Q 2Conducting makes Q 1Base voltage descends, and causes Q 1ON time shortens, and power supply no longer increases and is stabilized in to the electric current that load provides to be set on the numerical value.
Cause when load current increases (or minimizing) resistance R when supply power voltage or load variations 9Last pressure drop raises (or reduction), causes that led current increases in the IC (or minimizing), phototriode conducting in the IC, and resistance reduces (or increase), Q 2Conducting resistance reduces (or increase), Q 1ON time shortens (or elongated), and the power supply minimizing (or increasing) that powers to the load is set in the numerical value thereby keep load current to be stabilized in.
By controllable silicon SCR, DZ 1Form the output open circuit protective circuit Deng element, when load open circuit, output voltage is increased to rapidly when setting numerical value, DZ 1Puncture conducting, trigger the SCR conducting, its conducting electric current is in resistance R 7The pressure drop of last generation makes diode D 7Conducting makes IC and Q 2The conducting electric current increases, Q 1ON time shortens, and output voltage reduces and maintains on the reduced levels, has protected circuit element, cuts off power supply behind the load restoration and starts shooting, and protection is removed.
By DZ 2Form load self-adjusting circuit Deng the voltage-stabiliser tube that is connected in parallel on the LED two ends, LED just often, voltage stabilizing didoe is not worked, and when certain LED open circuit damages, punctures conducting with the voltage stabilizing didoe of this LED parallel connection, links up the load current operate as normal.According to above-mentioned, adopt its supply power voltage of LED illuminating lamp of the present utility model (power is from several watts to tens of watts) can be when 150V to 250V changes, the load current variable quantity is about 3%, efficient is higher than 90%, prove functional, power savings is obvious, more than at least 50%, increases the service life more than 10 times; And safety, luminous even, good illumination effect is beneficial to vision protection and prevents the contaminated air environment, and remarkable economical and social benefit are arranged.

Claims (5)

1, a kind of new and effective low-cost LED illuminating lamp constant-flow driver; be to make module by housing and its internal circuit to form; it is characterized in that; AC power incoming line (2) and DC power supply output line (3) are arranged outside the module housing (1); internal circuit is to be made of power circuit, oscillating circuit, load self-adjusting circuit and protective circuit; the input of the output termination oscillating circuit of power circuit; be connected to load self-adjusting circuit and protective circuit on the output end of oscillating circuit, sending and receiving optical diode illuminating lamp on its load self-adjusting circuit dc output end.
2, new and effective low-cost LED illuminating lamp constant-flow driver according to claim 1 is characterized in that said power circuit is by diode (D 1-D 4) bridge rectifier that constitutes and the current-limiting resistance (R on the input thereof 1) constitute, input termination alternating current 220V power supply, the input of output termination oscillating circuit, and through electric capacity (C 1) ground connection.
3, new and effective low-cost LED illuminating lamp constant-flow driver according to claim 1 is characterized in that said oscillating circuit is by triode (Q 1), (Q 2) and resistance (R 2), (R 3), electric capacity (C 2), transformer (B) and photoelectricity coupling (IC) constitute triode (Q 1) base stage meet diode (D 5) negative pole, resistance (R 2), electric capacity (C 2) and triode (Q 3) collector electrode, and through resistance (R 2) meet the output and the triode (Q of power circuit 1) collector electrode, triode (Q 1) emitter meet diode (D 5) positive pole, triode (Q 2) emitter, diode (D 6) negative pole and transformer (B), and through diode (D 6) ground connection, triode (Q 2) base stage connect the plate pipe end of photoelectricity coupling (IC), and through resistance (R 4) connecting resistance (R 3) and transformer (B), through resistance (R 3) meet electric capacity (C 2), transformer (B) output is through resistance (R 6) connect protective circuit.
4, new and effective low-cost LED illuminating lamp constant-flow driver according to claim 1 is characterized in that said protective circuit is by controllable silicon (SCR), voltage stabilizing didoe (DZ 1), resistance (R 7), diode (D 7) and photoelectricity coupling (IC) composition, controllable silicon (SCR) positive pole meets voltage stabilizing didoe (DZ 1) negative pole and resistance (R 6), gate plate meets electric capacity (C 3), resistance (R 5), (R 7) and diode (D 7), electric capacity (C 3), resistance (R 5) ground connection in parallel, resistance (R 7) ground connection, the light-emitting diodes end ground connection of photoelectricity coupling (IC), diode (D 7) connecting resistance (R 8), electric capacity (C 6), resistance (R 8) through resistance (R 9) ground connection, electric capacity (C 6) ground connection.
5, new and effective low-cost LED illuminating lamp constant-flow driver according to claim 1 is characterized in that said load self-adjusting circuit is by voltage stabilizing didoe (DZ 2), (DZ 3) ... (DZ n) constitute voltage stabilizing didoe (DZ 2) negative pole meets electric capacity (C 5), inductance (L) and DC output end (V 0), and through electric capacity (C 5) ground connection, inductance (L) meets electric capacity (C 4) and transformer (B), DC output end (V 0) on be connected to light-emitting diode (LED 1), voltage stabilizing didoe (DZ 3) anodal connecting resistance (R 9).
CNU2006200326543U 2006-09-27 2006-09-27 Novel highly effective low cost constant-current driver for LED lighting lamp Expired - Fee Related CN200950682Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2006200326543U CN200950682Y (en) 2006-09-27 2006-09-27 Novel highly effective low cost constant-current driver for LED lighting lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2006200326543U CN200950682Y (en) 2006-09-27 2006-09-27 Novel highly effective low cost constant-current driver for LED lighting lamp

Publications (1)

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CN200950682Y true CN200950682Y (en) 2007-09-19

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103068100A (en) * 2011-10-18 2013-04-24 隆达电子股份有限公司 Driving circuit and lamps
CN104010403A (en) * 2014-06-17 2014-08-27 中山市领航光电科技有限公司 Novel LED lighting driver

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103068100A (en) * 2011-10-18 2013-04-24 隆达电子股份有限公司 Driving circuit and lamps
CN104010403A (en) * 2014-06-17 2014-08-27 中山市领航光电科技有限公司 Novel LED lighting driver

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C19 Lapse of patent right due to non-payment of the annual fee
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