CN2802895Y - LED headlamp - Google Patents
LED headlamp Download PDFInfo
- Publication number
- CN2802895Y CN2802895Y CN 200520043095 CN200520043095U CN2802895Y CN 2802895 Y CN2802895 Y CN 2802895Y CN 200520043095 CN200520043095 CN 200520043095 CN 200520043095 U CN200520043095 U CN 200520043095U CN 2802895 Y CN2802895 Y CN 2802895Y
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- bridge rectifier
- capacitor
- controllable silicon
- light
- anode
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Abstract
An LED illumination lamp comprises a light-emitting diode and a diode bridge rectifier. A stepless voltage regulator is arranged between one leading-in terminal of the city alternating current power supply and one input terminal of the diode bridge rectifier, a resistor R1 and a capacitor C1 are connected in series between the anode and the cathode of the controlled silicon 3CT. One end of the bipolar trigger tube 2CD is connected with the control electrode of the controlled silicon 3CT, and the other end is connected with the cathode and anode of the controlled silicon 3CT respectively via a capacitor C2 and a variable resistor RW, and the variable terminal of the variable resistor RW is connected with the anode of the controlled silicon 3CT. The positive electrode output terminal of the diode bridge rectifier is provided with a resonance current-limiting device composed of a resistor R3 and a capacitor C3 connected in parallel, and the light-emitting diode is connected in series or in series and parallel between the resonance current-limiting device and the negative electrode output terminal of the semiconductor bridge rectifier. The utility model resolves the technical problem that the light-emitting diode is used as a lighting source.
Description
Technical field:
The utility model is about illumination, especially utilizes light-emitting diode (being semiconductor light-emitting-diode) to make the lighting of lighting use.
Prior art:
People's light fixture that uses that throws light on is commonly incandescent lamp or fluorescence lamp (claiming fluorescent lamp again), the luminescence mechanism difference of the two, the former utilizes the current flow heats filament to incandescent state and luminous, the latter then makes electrode produce ultraviolet ray by mercury vapor discharge earlier, and then utilizes this ultraviolet ray excited fluorescent material that is coated on the tube inner wall to send visible light.Just because of they luminescence mechanism differences, its luminous efficiency is also inequality, and the former luminous efficiency is 10～15 lumens/watt only lowly, and a large amount of electric energy have turned to thermal waste; Latter's luminous efficiency greatly improves about 4～6 times that are about the former, reaches 50～`70 lumens/watt.Because it is the former line construction is simple, easily manufactured, cost is low, startups is fast, still be the big main force of one in the lighting so far, but its energy consumption is big, under the situation that energy shortage now increasingly sharpens, absonant with requiring of economizing on electricity.Though latter's luminous efficiency height but the light fixture complex circuit need be aided with ballast and starter particularly uses harmful heavy metal Hg, after the fluorescent tube breakage of glass, mercury wherein leaks will have adverse influence to health and environmental pollution.
Along with science and technology development, particularly since the eighties in last century, the developing steps of advancing by leaps and bounds of semiconductor device, occurred various with gallium arsenide phosphide, gallium phosphide, gallium nitride, the light-emitting diode that semi-conducting materials such as silication gallium are made, it is to utilize under forward voltage, inject a lot of non equilibrium carriers in the pn knot, these charge carriers are at compound tense, the form that portion of energy is converted into light emits, this luminescence mechanism and above-mentioned incandescent lamp, fluorescent lamp is different again, and its luminous efficiency is higher than fluorescent lamp, reach 80～95 lumens/watt, and can not produce fission, blast and pollution problems.But at present single its illuminance of light-emitting diode is limited, only is used for the indicator light of electronic equipment, the display element and the photoelectric coupled device of charactron, and not useful as yet light-emitting diode comes out as the light fixture that lighting source uses.
Summary of the invention:
The purpose of this utility model is to provide a kind of LED illumination lamp, solves the technical problem of using light-emitting diode to use as lighting source.
The technical scheme that the utility model solves the problems of the technologies described above is:
A kind of LED illumination lamp, comprise light-emitting diode and diode bridge rectifier, it is characterized in that: between leading-in end of city's AC power and input of diode bridge rectifier, be provided with by resistance R 1, adjustable resistance RW, capacitor C 1 and C2, the stepless voltage regulator that two utmost point trigger tube 2CD become with controllable silicon 3CT fine horse, wherein resistance R 1 and capacitor C 1 are serially connected between the anode and negative electrode of controllable silicon 3CT, two utmost point trigger tube 2CD, one end extremely links to each other with controllable silicon 3CT control, the other end links to each other with controllable silicon 3CT negative electrode by capacitor C 2 respectively, link to each other with controllable silicon 3CT anode by variable resistor RW, the convertible tip of variable resistor RW links to each other with controllable silicon 3CT anode; Be provided with the resonance flow restricter of parallel resistor R3 and capacitor C 3 compositions at the cathode output end of diode bridge rectifier; The quantity of this light-emitting diode is by the illuminance decision of design, and is connected above-mentioned resonance flow restricter and the negative pole of diode bridge rectifier brings out between the end with the form of series connection or series and parallel.
It is characterized in that: be provided with the pressure stabilization filter of being made up of capacitor C 4, resistance R 2 and voltage-stabiliser tube DW, this pressure stabilization filter is connected between the cathode output end of above-mentioned resonance flow restricter output and diode bridge rectifier.
The utlity model has following useful effect:
1) because the illumination effect of light-emitting diode is high, the utility model is Duoed than existing other various light sources will save electric energy.
2) can adjust output voltage in 120～200V scope step-less adjustment, be applicable to the different power voltage of country variant.
3) output voltage is steady, and its ripple coefficient＜2% has guaranteed that led lighting does not have frequency and closes phenomenon.
4) long service life is no less than 60,000 hours, suitable seven years.
5) contain heat less extremely in the light, illuminated object is had no adverse effects, be particularly suitable for thermal light sources such as museum, the Art Museum usefulness of responsive showpiece illumination especially.
Description of drawings:
Fig. 1 is a kind of electrical block diagram of the present utility model.
Embodiment:
See also shown in Figure 1ly, the utility model comprises light-emitting diode 5 and diode bridge rectifier 2.This diode bridge rectifier 2 is made up of semiconductor diode D1, D2, D3 and D4, wherein the negative electrode of diode D1 and D3 connects and composes cathode output end C jointly, the anode of diode D2 and D4 links to each other jointly and constitutes cathode output end d, the anode of the negative electrode of diode D4 and diode D1 links to each other and as an input a, and the anode of the negative electrode of diode D2 and diode D3 links to each other and as another input b.
Cathode output end C at diode bridge rectifier 2 is provided with resonance flow restricter 3, and this resonance flow restricter 3 is made up of the capacitor C 3 and the resistance R 3 of parallel connection.The output of above-mentioned resonance flow restricter 3 links to each other with the positive pole of light-emitting diode 5.The quantity of light-emitting diode 5 is by the illuminance decision of setting, and each light-emitting diode 5 is connected in series between the cathode output end d of above-mentioned resonance flow restricter 3 outputs and diode bridge rectifier 2 mutually; Perhaps each light-emitting diode 5 form of adding parallel connection (as shown in the figure) with series connection is connected between the cathode output end d of the output of above-mentioned resonance flow restricter 3 and diode bridge rectifier 2.
Be provided with by resistance R 1 between an input a of this diode bridge rectifier 2 and the leading-in end of city's AC power, adjustable resistance RW, capacitor C 1 and C2, the stepless voltage regulator 1 that two utmost point trigger tube 2CD and controllable silicon 3CT form, wherein resistance R 1 and capacitor C 1 are serially connected between the anode and negative electrode of controllable silicon 3CT, two utmost point trigger tube 2CD, one end extremely links to each other with controllable silicon 3CT control, the other end then links to each other with controllable silicon 3CT negative electrode by capacitor C 2 respectively, link to each other with controllable silicon 3CT anode by variable resistor RW, the convertible tip of variable resistor RW links to each other with controllable silicon 3CT anode.Another leading-in end of city's AC power connects another input b of this diode bridge rectifier 2 with lead.
The utility model can be regulated output voltage in 12～200 volts of scopes as required by stepless voltage regulator 1, and the resistance of the resistance R 3 by resonance flow restricter 3 is selected for use and is limited electric current in 20～4000 milliamperes of scopes that set, the electric current of the light-emitting diode 5 of flowing through can not transshipped, prolonged the useful life of light-emitting diode 5 significantly.
The utility model can also be provided with the pressurizer 4 that comprises capacitor C 4, resistance R 2 and voltage-stabiliser tube DW composition at the cathode output end d and resonance flow restricter 3 outputs of diode bridge rectifier 2, and wherein capacitor C 4, resistance R 2 and voltage-stabiliser tube DW are the state of being connected in parallel.This pressurizer 4 makes the VD balance after the rectification, reduces fluctuation, and its ripple coefficient＜2% has guaranteed that the lighting source of light-emitting diode 5 does not have stroboscopic phenomenon, has also prolonged to amplitude peak the service life of LED light lamp simultaneously.
Claims (2)
1, a kind of LED illumination lamp, comprise light-emitting diode and diode bridge rectifier, it is characterized in that: between leading-in end of city's AC power and input of diode bridge rectifier, be provided with by resistance R 1, adjustable resistance RW, capacitor C 1 and C2, the stepless voltage regulator that two utmost point trigger tube 2CD become with controllable silicon 3CT fine horse, wherein resistance R 1 and capacitor C 1 are serially connected between the anode and negative electrode of controllable silicon 3CT, two utmost point trigger tube 2CD, one end extremely links to each other with controllable silicon 3CT control, the other end links to each other with controllable silicon 3CT negative electrode by capacitor C 2 respectively, link to each other with controllable silicon 3CT anode by variable resistor RW, the convertible tip of variable resistor RW links to each other with controllable silicon 3CT anode; Be provided with the resonance flow restricter of parallel resistor R3 and capacitor C 3 compositions at the cathode output end of diode bridge rectifier; The quantity of this light-emitting diode is by the illuminance decision of design, and is connected above-mentioned resonance flow restricter and the negative pole of semiconductor bridge rectifier brings out between the end with the form of series connection or series and parallel.
2, LED illumination lamp according to claim 1, it is characterized in that: be provided with the pressure stabilization filter of being made up of capacitor C 4, resistance R 2 and voltage-stabiliser tube DW, this pressure stabilization filter is connected between the cathode output end of above-mentioned resonance flow restricter output and diode bridge rectifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520043095 CN2802895Y (en) | 2005-07-01 | 2005-07-01 | LED headlamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520043095 CN2802895Y (en) | 2005-07-01 | 2005-07-01 | LED headlamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2802895Y true CN2802895Y (en) | 2006-08-02 |
Family
ID=36847599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520043095 Expired - Fee Related CN2802895Y (en) | 2005-07-01 | 2005-07-01 | LED headlamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2802895Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010122403A1 (en) * | 2009-04-24 | 2010-10-28 | City University Of Hong Kong | Apparatus and methods of operation of passive led lighting equipment |
| CN101203081B (en) * | 2007-10-22 | 2011-03-23 | 深圳市众明半导体照明有限公司 | Supply apparatus for light modulation of LED |
-
2005
- 2005-07-01 CN CN 200520043095 patent/CN2802895Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101203081B (en) * | 2007-10-22 | 2011-03-23 | 深圳市众明半导体照明有限公司 | Supply apparatus for light modulation of LED |
| WO2010122403A1 (en) * | 2009-04-24 | 2010-10-28 | City University Of Hong Kong | Apparatus and methods of operation of passive led lighting equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |