CN2922364Y - Luminous diode lamp series - Google Patents
Luminous diode lamp series Download PDFInfo
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- CN2922364Y CN2922364Y CNU2005201034209U CN200520103420U CN2922364Y CN 2922364 Y CN2922364 Y CN 2922364Y CN U2005201034209 U CNU2005201034209 U CN U2005201034209U CN 200520103420 U CN200520103420 U CN 200520103420U CN 2922364 Y CN2922364 Y CN 2922364Y
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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 relates to a luminous diode lamp series, which comprises a lampshade, a luminous diode lamp (LED) array and a control circuit, wherein, the control circuit comprises a reference power supply, a power supply control module, a high voltage power supply, a low voltage power supply, a current source, a modulator, a modulation signal, the LED array, a decoder and a time counter. The luminous diode lamp series comprises corridor lamp, luminous lamp, hall lamp, table lamp, mine lamp or other battery-power supplied lamps, lamp with luminance and color being modulated and traffic lights etc. The lamp has the advantages of high luminous efficiency, long service life, high reliability, safe and convenient modulation characteristic, various varieties, short response time, small space usage coefficient, various colors, less voltage and current needs of each LED etc., and, with optimized performance-price ratio, can be popularized into different application fields as quickly as possible.
Description
Technical field
Light-emitting diode lamp series and control thereof relate to car light, mine lamp, corridor lamp, hall lamp, desk lamp, pictorial trademark lamp, amusement Color-changing lamp, music light modulation toning lamp, traffic lights, infrared lamp, uviol lamp, laser lamp, medical or physiotherapy special lamp ... or the like the structure and the control circuit thereof of lamp.Its power supply can be civil power, battery, solar cell or other available power supplys.
Background technology
The present illumination world except automobile, traffic lights, instrument with indicator light and digital display lamp ... etc. outside the limited range, basically still be the world of incandescent lamp, sight lamp, neon light and other gas-filled lamps, these lamps are cheap or have some specific function except price, its energy consumption is big, luminous efficiency is low, the life-span is short, Keep Clear-High Voltage, the variable color light modulation is undesirable, be difficult to be subjected to the external signal modulation, the ratio of performance to price is low and outer, and eye is hindered in the also flicker that has.
Since the self-luminous diode came out, except that minority fields such as instrument, automobile, traffic lights, advertising lamp and large-screen picture demonstration were applied, other field was not widely used as yet.Trace it to its cause, except himself cost than higher and, its forward overcurrent, oppositely overvoltage all might cause its permanent damage or performance to reduce.The adjunct circuit of establishing has more increased its cost for this reason.Now the LED light lamp control flows is crossed wherein electric current nothing more than following three kinds of modes.
1. resistance current-limiting type: advantage is simple, inexpensive, only needs a current-limiting resistance.Shortcoming is accurate Control current, may cause overcurrent and burn light-emitting diode or its performance is reduced when overvoltage; Can square rising with its power consumption of rising of voltage with voltage difference; Be difficult to and the high voltage source collaborative work.
2. switching mode current stabilization control type: advantage is that control characteristic is good; Can in the wide input voltage excursion, work; Power consumption is little, efficient is high.Shortcoming is the cost height of integrated circuit and peripheral component thereof; The active circuit area occupied is big, and cost is risen; The adaptation voltage of existing integrated circuit work is low; The unidirectional current power supply is unsuitable for alternate current operation; The electromagnetic interference that switching circuit produces is strong, and shielding cost height shields improper easy interference communications, household electrical appliances, and the crowd that cardiac pacemaker is housed more is subject to disturb.
3. linear active device current stabilization control type: advantage is for accurately controlling the electric current in the light-emitting diode; Cost is lower than switching mode stable flow type; To be power consumption be directly proportional with the voltage difference of voltage on supply power voltage and the light-emitting diode shortcoming, is situated between between resistance current-limiting type and the switching mode current stabilization Current limited Control formula; Many active devices are not suitable for high-pressure work; Cost is still higher.
The utility model content
The purpose of this utility model, be to overcome deficiency of the prior art, pluses and minuses separately at three kinds of current limiting measures, apply in a flexible way at different purposes lamps, maximize favourable factors and minimize unfavourable ones, a kind of current limliting power consumption that solves different LED light lamp with rational method is provided, the reverse breakdown of diode during Alternating Current Power Supply, low-voltage device is withstand voltage, powered battery lamp efficient and under-voltagely do not act on, obtain constant current or current limliting when high voltage direct current or Alternating Current Power Supply, simple effectively realization overvoltage, under-voltage, lamplight brightness is efficiently regulated in the protection of overcurrent and alarm, the aeolight color, simplify traffic lights itself and control circuit thereof, realize the switching and the colour mixture of traffic lights light color; Light-emitting diode lamp series with unification of traffic lights three lamps and introducing countdown time showing.
The purpose of this utility model is achieved through the following technical solutions.
The light-emitting diode lamp series is made up of elen shade, LED light lamp array and control circuit, it is characterized in that: its control circuit comprises reference power source, energy supply control module, high voltage source, low-tension supply, current source, modulator, modulation signal, LED light lamp array, decoder, time counter composition; Reference power source inserts energy supply control module, energy supply control module connects high voltage source and low-tension supply respectively, high voltage source connects current source, low-tension supply connects modulator circuit, modulator circuit connects modulation signal and current source respectively, and low-tension supply is told two after being connected to modulator circuit: one connects current source and LED light lamp array, and another connects modulation signal and time counter, time counter is connected to decoder, and decoder is connected to the LED light lamp array.
The electric current of forward and reverse light-emitting diode is flow through in restriction, is to adopt by transistor (Q
2.1), diode (D
2.1, D
2.2), resistance (R
2.1), potentiometer (R
V2.1), resistance (R
2.2) the forward current source formed, and adopt by transistor (Q
2.2), diode (D
2.3, D
2.4), resistance (R
2.1, R
2.2), potentiometer (R
V2.1) the reverse current source formed, keeping the constant of maximum pulsating current, its current strength can be by potentiometer (R
V2.1) regulate.
The utility model light-emitting diode lamp series comprises: lamp, traffic lights and other special lamp that corridor lamp, luminous lamp, hall lamp, desk lamp, mine lamp or other powered battery lamp, brightness and color are modulated.
The electric circuit characteristic of described corridor lamp or luminous lamp is to adopt transformer (T
1.1) with the civil power step-down, become the low-voltage alternating-current power supply; Light-emitting diode is to D
L1.1, D
L1.2... D
L1.NReverse parallel connection oppositely and after connecing is connected in pairs, seals in current-limiting resistance R again
1.1Be added on transformer T
1.1The inferior utmost point; Civil power is through transformer (T
1.1) step-down, rectifier (U
4.1) rectification, electric capacity (C
4.1, C
4.2) obtain the unstabilized direct voltage of low pressure after the filtering, supply with light-emitting diode (D
4.1.1, D
4.1.2... D
4.1.N) and light-emitting diode (D
4.M.1, D
4.M.2... D
4.M.N) connection in series-parallel Assembled lamp array; The right number N of described light-emitting diode may be as few as N=1.
The electric circuit characteristic of described hall lamp is with transformer (T
1.1) higher inferior pole tension power supply, oppositely and the light-emitting diode that connects to row serial connection again, the right number N of described light-emitting diode is more than corridor lamp.
Pressurizer U
4.2The input of not stablizing take from light-emitting diode (D
L4.1.N-1) anode, the output of its stabilized voltage power supply is through potentiometer (R
V4.1), resistance (R
4.1) add to transistor (Q after the dividing potential drop
4.1... Q
4.M) base stage, by potentiometer (R
V4.1) can regulate the brightness of lamp continuously, the input current of pressurizer is supplied with light-emitting diode; For the bigger area of civil power excursion, the transformer time utmost point can be introduced a plurality of taps, in order to be adjusted to the most appropriate voltage.
Mine lamp or other powered battery lamp are powered by A-battery, to ensure safety; Pressurizer (U
7.3) by battery (E
7.1) power supply, its burning voltage is exported to integrated circuit (U
7.1, U
7.2, U
7.3) power supply
The lamp that described brightness and color are modulated is formed its constant source flowing transistor (Q by red (R), green (G), blue (B) three groups of lamps
9R, Q
9G, Q
9B) gate pole by voltage-stabiliser tube (D
V9.1) be biased in fixed potential, add various modulation signals at the Men Duanke that is labeled as R, G, B.
Described traffic lights have Red Light, Stop, three kinds of operating states of amber light caution, and it has low-voltage direct stabilized voltage power supply and two groups of electric power systems of high pressure, and low pressure source is the LED light lamp power supply for all control circuit power supplies, high-voltage power supply;
Low pressure source of stable pressure (U
8.3) output through resistance (R
8.1, R
8.2) voltage divider gives integrated circuit (U
8.4) bear into end and (U
8 ' 4) the end of just going into fixed-bias transistor circuit, integrated circuit (U are provided
8.4) just go into end and integrated circuit (U
8 ' 4) bear into end and connect together and through pull-up resistor (R
8.8) be connected to low-tension supply;
Described high voltage source can be a direct current, pulsation or the voltage source that exchanges.
Described automobile traffic command lamp has red, green, yellow three kinds of operating states, and by mains-supplied, civil power adds to transformer (T
11.1) elementary, secondary have low pressure and two groups of windings of high pressure; The low pressure winding is through rectifier (U
11.3) rectification, electric capacity (C
11.1, C
11.2) add to pressurizer (U after the filtering
11.8) input, its voltage stabilizing output is through electric capacity (C
11.5, C
11.6) give all low-voltage circuits power supplies after the filtering; The transformer high-voltage winding has two taps, and one meets optocoupler bidirectional switch (U
11.1) an end, another meets optocoupler bidirectional switch (U
11.2) an end, the other end of two optocoupler bidirectional switchs links together and is connected to rectifier (U
11.4) an ac input end; The optocoupler bidirectional switch also can be other (for example relay) electronics bidirectional switchs; Rectifier (U
11.4) to high pressure winding AC rectification and through electric capacity (C
11.3, C
11.4) after the filtering high direct voltage, be the power supply of baroluminescence diode lights group;
LED light lamp is in series after by red, green two kinds of paired parallel connections again, and their forward and reverse electric current is by transistor (Q
11.1, Q
11.2), diode (D
11.1, D
11.2, D
11.3, D
11.4), resistance (R
11.12, R
11.13) forward and reverse current source of forming limits;
The switching of light emitting diode string electric current is by the optocoupler bidirectional switch (U that seals in its high pressure and ground end
11.12, U
11.13, U
11.14, U
11.15) determine;
This optical coupled switch can replace with other unidirectional or two-way electronic switches;
Integrated circuit (U
11.9) be a controlled oscillator, its control end (R, G, B) is subjected to the control of external instruction, when terminal (R) when putting 0, integrated circuit (U
11.9) output 0 level, it makes integrated circuit (U
11.10) output 0 level, and (U
11.11) output 1 level, this makes optocoupler bidirectional switch (U
11.12, U
11.14) logical, and (U
11.13And U
11.15) disconnected, the forward led current is by transistor (Q
11.1), light-emitting diode (D
L11.1, D
L11.2... D
L11.N-1, D
L11.N) circulation, they are red light emitting diodes, show ruddiness;
When terminal (G) when putting 0, integrated circuit (U
11.9) output 1 level, it makes integrated circuit (U
11.10) output 1 level, and (U
11.11) output 0 level, this makes optocoupler bidirectional switch (U
11.12, U
11.14) disconnected, and (U
11.13, U
11.15) logical, oppositely led current is by transistor (Q
11.2), light-emitting diode (D
L11 ' 1, D
L11 ' 2... D
L11 ' N-1, D
L11 ' N), they are green LEDs, show green glow; When terminal (R) and (G) equal open circuit, that is when putting terminal (Y), integrated circuit (U
11.9) self-oscillation, its output makes integrated circuit (U
11.10) and (U
11.11) alternately export 0 or 1, thus red, green LED light lamp (D made
L11.1... D
L11.N, D
L11 ' 1... D
L11 ' N) alternately bright, go out, show gold-tinted, also available its direct-drive yellow light-emitting diode lamp after its vision colour mixture.
Being specifically described as follows of the utility model light-emitting diode lamp series:
(1) corridor lamp
For brightness requirement such as the corridor lamp lamp of high type not, drop to civil power with very low power transformer very low, with the resistance current limliting to oppositely and the two light-emitting diodes that connect to or its tandem compound carry out Alternating Current Power Supply.Like this, bright at the positive half cycle light-emitting diode on one side that exchanges, the light-emitting diode of negative half period another side is bright, and its luminous frequency is two times of civil power, has reduced scintillation effect.
Because voltage is low, the change of power consumption that causes because of voltage fluctuation can very big unlikely damage light-emitting diode, and the light-emitting diode of reverse parallel connection has the effect of protection each other to reverse breakdown.
Because little and long-life of power consumption of light-emitting diode, even also available a lot of years of Chang Ming is and not bad, for civil power, its power consumption can be not significant, and modes such as also available certainly acoustic control or light-operated switch make it further energy-conservation.
(2) hall lamp
Hall lamp generally requires brightness of illumination bigger, and requires brightness preferably adjustable, and the light-emitting diode quantity that at this moment needs is many, and the method for realization has multiple:
Low-voltage direct connection in series-parallel assembled scheme: its power consumption is big, cost is high, efficient is low, brightness is difficult for tracking;
Low-voltage alternating-current connection in series-parallel assembled scheme: drawback still exists though its cost is lower than low-voltage direct connection in series-parallel combination, and its power consumption is big, efficient is low, brightness is difficult for tracking etc.;
The high-pressure series assembled scheme: its total power consumption is littler than the connection in series-parallel combination, and circuit is also simple, and efficient is also high than the connection in series-parallel combination, and brightness is easy to tracking.The high-voltage alternating tandem compound more has superiority than the DC series combination.
For the hall lamp when installing and, not often contact of people, installation personnel should be to understand electric knowledge, and its life-span is very long, perhaps all need not change people's all one's life, thereby is safe.Even the ordinary person only otherwise also the same with the changing common bulb safety in the inside that turns on the light.
The high voltage supply technical issues that need to address will be waited until in the embodiment and will be illustrated.
(3) desk lamp
Desk lamp is often contact and the long-time lamps of being absorbed in of people, so safety and vision protection, particularly baby and pupil's eyesight is a matter of utmost importance.In addition, have the people of band cardiac pacemaker among the member of some family, or pair radio frequency interference sensitivity is arranged in the household electrical appliances.Its three, its cost of household products also is important focus.
Therefore it should not adopt high voltage supply, should not use switch current stabilization mode.Therefore the low pressure mode of linear active device control stream alternatively.When using ac power supply method; the biphase rectification effect of forward and reverse light-emitting diode in parallel can exceed the flicker frequency that human eye may be offered an explanation to one times of mains frequency frequency multiplication, and is not serious to human eye; but, still be preferred with the low-voltage DC supply in order to protect infant and teen-age eyesight.
The brightness of this lamp also should be continuously adjustable.
The lampshade of desk lamp should be ground glass one class, constitutes diffuse reflection between its inside and outside cover, does not allow high light direct projection people's the eyes of LED light lamp.
Decide according to requiring at the visual angle of lamp.The lamp visual angle that induces one to be absorbed in is little, the big lamp visual angle of irradiated area to want big, and this can solve from the visual angle of light-emitting diode itself and the aspects such as structure of lamp.
(4) mine lamp or battery-powered lamp
Mine lamp is for for the purpose of the downhole safety, and generally all with the A-battery power supply, service life of incandescent lamp is short, and power consumption is big, and easily sparking, easily causes down-hole accident.Light-emitting diode has its special advantages in these areas.
It can adopt switching mode current stabilization control type, but in order to save cost and the High-frequency Interference that prevents the switching mode circuit, we intend adopting the low pressure connection in series-parallel assembled scheme of linear active device current stabilization control.Aspect raising the efficiency, we intend making full use of the normal voltage of battery, the efficient of this and switching mode current stabilization control type should be much the same, and when under-voltage, it can reduce the brightness of lamp automatically also with the alarm of lighting of red light emitting diodes, allows the user in time charge the battery and solves, and has so both improved efficient, also reduced cost, in time alarm is also safer.
Reduce the brightness of lamp in the time of low pressure warning, also prolonged the residue operating time of lamp simultaneously, allow the user that the adequate time matters of dealing with the aftermath are arranged, and to withdraw from mine be that battery charges again.
(5) brightness and color all can be by the lamps of signal modulation
In fields such as trade mark, advertisement, stage, singing-hall, festal occasion, often need color and brightness ... to wait and the color lamp that changes with scene, music, dancing, pattern, available red (R), green (G), blue (B) three kinds of high brightness LED lamps are realized fully for these, their per pixels of three formations also closely are close together, modulate with three kinds of clock signals respectively, make its colour and the brightness that produce different levels, the same with video screen; For the lamp decoration that does not require the show events image, then can be together in series these picture elements separately by R, G, B respectively, by desired pattern on the plane or spatial arrangements appropriate, and include square wave, sine wave, triangular wave, trapezoidal wave, parabolic shape, the two-way parabolic shape of three kinds of phase differences with R, G, B three modulation signals----... or the like waveform, or music, voice etc. have the rhythm and pace of moving things and arrhythmic waveform, allow after their colour mixtures and obtain Protean color and contrast, this is than the identification light of advertising lamp, neon light, barber shop ... wait richer including.
Except that image shows that for various pattern displaying, complete available high direct voltage, ac high-voltage or the high pressure of pulsing are powered and.
(6) pedestrian and bicycle stop-light
Pedestrian and bicycle traffic lights have two kinds of operating states of Red Light, Stop, and it can be with the high direct voltage of constant current work, and ac high-voltage or pulsation high pressure are powered.Demonstration and demonstration time thereof red, green light are switched by command system.
(7) automobile traffic command lamp
The difference of automobile traffic command lamp and bicycle traffic lights is that it has red, green, yellow three kinds of change in color.In addition, for more clearly prompting, its brightness and display area also require stricter.
Feature of the present utility model also is:
Red, after oppositely connecting together, green two kinds of light-emitting diodes again they are connected in series, with pulsation high pressure or high direct voltage power supply, allow and only make red light emitting diodes string wherein luminous when needing red light to show, green light only allows green LED wherein luminous when showing, gold-tinted then allows red when showing, green light-emitting diode is alternately lighted with the frequency that is higher than falling property of human eye vision resolution, borrow human eye to red, the colour mixture effect of green glow and obtain gold-tinted, like this can be existing red, green, yellow three lamps are merged into a lamp, both saved cost, more make driver's will be absorbed in.
Secondly, the mode of the time of lighting of red, green, yellow lamp with countdown is presented on the traffic lights with seven segment code, allow the driver more very clear like this to the time that stops, goes, waits for, and perform in advance stop, the row mental preparation, the easier stimulation of the time showing that changes driver's nervous excitation can cut down traffic accidents and improve the current rate of road.
Sometimes the civil power fluctuation range is too big, and power consumption and reliability problems also answer emphasis to consider, accomplish non-maintaining as far as possible.
Traffic lights is located in the open, the variation of weather, and the attack of wind, frost, rain, snow, thunder, electricity, hail is unavoidable, and the safeguard measure of these disasters all should be at the row of consideration.
(8) other lamps
Infrared lamp can be used for 1) physiotherapy: it requires the thermal effect height, also requires irradiation to change by rule is strong and weak sometimes, at the setting regions dynamic motion.2) TV anti-thefting monitoring: the visual angle is narrow when requiring fixed point to monitor; The visual angle wants wide when monitoring on a large scale, also need rotate with motor sometimes and further expand its visual angle.3) night reconnaissance and aiming: require the visual angle little, long transmission distance.
Uviol lamp can be used for: sterilization, sterilization, physiotherapy.
Laser lamp can be used for: physiotherapy, optical communication ... or the like the field.
The physiotherapy lamp can the comprehensively various characteristics that the therapeutic action lamp is arranged, by the requirement of physiotherapy, they make light intensity controlled or modulated bright dark in order, wire, planar, ring-type or the three-dimensional version that distributes.
Shadowless lamp
Make the projectional angle of light emitting diode matrix that multiple variation is arranged from structure, make when some light emitting diode is blocked, other LED light lamp but can shine, allow the irradiated region of whole lamp become no shadow, because the volume of single LED light lamp is little, they are easier arranges by this all requirement rule.
LED light lamp is with its high luminous efficiency, long-life, high reliability, modulating characteristic, numerous kinds, short response time, little occupation efficiency, numerous low voltage and current demands of color, each light-emitting diode easily ... or the like advantage, and the trend that reducing gradually of itself cost, will occupy most existing photoelectricity market future.
The purpose of this utility model is to give full play to its advantage in various application with the scheme of optimizing, and avoid its inferior position, and make it be generalized to each application as soon as possible with the cost performance of optimizing, this can be seen in the specific embodiment of various technical schemes and appropriate section thereof, does not add to give unnecessary details at this.
Light-emitting diode lamp series of the present utility model has efficient height, low in energy consumption, life-span length, safety, occupy-place is little, spectrum is wide, color is complete, inertia is little, easy picture group case, brightness and advantage such as color is easily modulated, voltage is low, electric current is little, has established its basis in many applications.The control circuit of lamp is reasonably selected in the lasting decline of price again, will replace existing incandescent lamp, fluorescent lamp market rapidly with its advantage; Make power savings more such as mine lamp or other powered battery lamps, bright, long-life, safety, reliably; Brightness and color tunable system property can make neon light and other advertising lamps lose lustre; Reasonably control circuit can make traffic lights more brief, economical, reliable and give greater functionality, improves the rate of passing through and cuts down traffic accidents.
Description of drawings
Fig. 1 is the low-voltage alternating-current corridor lamp of mains-supplied resistance current limliting or the circuit diagram of luminous lamp.
Fig. 2 is the circuit diagram of the high-voltage alternating hall lamp of mains-supplied constant current control.
Fig. 3 is a mains-supplied, the circuit diagram of the high-voltage alternating hall lamp of another kind of constant current control.
Fig. 4 is the low pressure current source control desk lamp of voltage stabilizing direct current supply not behind civil power and the rectifying and wave-filtering, and its brightness is continuously adjustable.
But the another kind of current source control of Fig. 5 manual adjustments transformer time utmost point tap when to be the civil power excursion excessive, the continuously adjustable desk lamp of brightness.
But Fig. 6 excessive manual adjustments transformer that is the civil power excursion time pole tension, with the desk lamp of image current source current limliting, its brightness also is continuously adjustable.
Fig. 7 is battery-powered mine lamp, the current source control lamp of vehicle-mounted lamp etc.
Fig. 8 is a kind of pedestrian or bicycle traffic lights circuit diagram.
Fig. 9 is the Color-changing lamp control circuit figure that color and brightness all can be modulated.
Figure 10 is the circuit diagram of one of traffic lights of self adaptation civil power variation.
Figure 11 is two a circuit diagram of the traffic lights that change of self adaptation civil power.
Figure 12 is three a circuit diagram of the traffic lights that change of self adaptation civil power.
Figure 13 is a circuit block diagram.
Embodiment
1. corridor lamp or luminous lamp
The brightness of requirement such as corridor lamp and luminous lamp is not very strong, and the circuit of their available interchanges, low pressure, resistance current limliting, light-emitting diode reverse parallel connection is realized.
As shown in Figure 1, civil power LINE IN is through transformer T
1.1After the step-down, its secondary being connected to by series resistance R
1.1, light-emitting diode reverse and that connect is right: D
L1.1, D
L1 ' 1D
L1.2, D
L1 ' 2... D
L1.N, D
L1 ' NTandem compound.In fact series connection oppositely and the right quantity of light-emitting diode that connects be seldom, even have only unique a pair of.
The LED light lamp of this resistance current-limiting type, only suitable low-voltage power supply mode.Power consumption when civil power increases on the current-limiting resistance will with square being directly proportional of pressure reduction between civil power amplitude and diode string, when raising, voltage may reach the degree of not allowing, the electric current that flows through in the diode also can increase widely, in the little life-span that then influences lamp, greatly then make diode lights damage fully or resistance burns.
During low-voltage power supply, even the civil power excursion is very big, resistance R
1.1On change in voltage can be very not big yet, can be fully in safe range.For civil power, the efficient of low-power equipment is not subject matter, and it is simple, economy, luminous efficiency height, the long advantage that then highlights of life-span.If introduce acoustic control, technology such as light-operated, will further improve its useful life.
With oppositely also sending and receiving optical diode lamp is right; can make reverse lamp obtain the overvoltage protection of forward lamp; and forward and reverse diode self has just constituted a full-wave rectifier; it is the alternating current frequency multiplication of mains frequency the pulsation of its double frequency; can significantly reduce the scintillation effect of lamp; help protecting eyes, particularly children and teen-age eyes.
Be added on resistance, light-emitting diode to the crest voltage on the tandem compound
E
1sp＝e
1s
E
1spBe transformer T
1.1The crest voltage of secondary winding.
e
1sBe transformer T
1.1The effective value voltage of secondary winding.
Crest voltage be alternating voltage doubly, their forward and reverse voltage has all been used, and has also reduced the required links such as rectifying and wave-filtering of direct current supply, so its efficient is still very high during low-voltage power supply.
Make e when city's electro-mechanical wave
1sAt e
1sminTo e
1smaxWhen this changed, the light-emitting diode operate as normal need satisfy:
E
1spmin＝e
1smin≥I
pminR
1.1+NV
DLmin
E
1spmax＝e
1smax≤I
pmaxR
1.1+NV
DLmax
2. hall lamp
The ceiling light in room or hall requires brightness of illumination than corridor height, also requires brightness adjustable continuously sometimes, and this just needs a lot of light-emitting diodes simultaneously luminous.Lamp with many groups of low-voltage power supplies is lighted simultaneously, then the power consumption sum of the current limiting device of its every group of lamp and overcome civil power and change the surplus capacity stayed.Its total power consumption will be very big, adopt switch current stabilization control type technology also can only save civil power and change institute's surplus capacity that stays power consumption partly, its cost then can promote widely, still the integrated circuit that does not have high-voltage switch gear current stabilization control type now on the market, in order to overcome these difficult points, we power with high-voltage alternating, and replace current-limiting resistance R among Fig. 1 with two-way adjustable current source
1.1, this two-way adjustable current source has number of different types, and Fig. 2 and Fig. 3 have provided wherein two kinds.
Among Fig. 2, Q
2.1, D
2.1, D
2.2, R
2.1, R
V2.1, R
2.3, form the forward adjustable current source jointly; Q
2.2, D
2.3, D
2.4, R
2.1, R
V2.1, R
2.3Then form the adjustable in opposite directions current source jointly, its forward and reverse electric current is by R
V2.1Tracking.Their peak inrush current does not change with civil power basically.
Difference with Fig. 2 in Fig. 3 only is to use voltage-stabiliser tube D
V3.1, DV
3.2Replaced the D among Fig. 2
2.1, D
2.2And D
2.3, D
2.4, R
2.3And R
V2.1Be split into R
3.3And R
3.4, also introduce diode D
3.1, D
3.2, when guaranteeing the civil power positive-negative half-cycle, corresponding voltage-stabiliser tube can operate as normal.Its steady flow result is better than Fig. 2, but cost slightly increases.
Transformer T in Fig. 2 and 3
1.1Secondary voltage very high though (may be step-up transformer sometimes, exceed line voltage), because light-emitting diode is to D
L1.1, D
L1 ' 1... D
L1.N, D
L1 ' NProtect each other etc. paired reverse parallel connection, transistor is to Q
2.1, Q
2.2Diode pair D
2.1, D
2.2With D
2.3, D
2.4And D
3.1With D
3.2And voltage stabilizing didoe D
V3.1With D
V3.2All reverse parallel connection combination protections each other.The high pressure overwhelming majority of transformer secondary output positive-negative half-cycle all is added on the light-emitting diode chain, so transistor Q
2.1, Q
2.2Do not need to select high especially withstand voltage pipe, thereby solved the difficult problem in the high-voltage power supply circuit.
Since current constant, transistor Q
2.1, Q
2.2Power consumption only change with the voltage that adds thereon with being directly proportional.In fact the ceiling voltage that adds thereon is civil power peak value Q
1s(remove R with the poor of all forward conduction light-emitting diode forward voltage drop sums
2.1And R
V2.1On power consumption).Resistance R when this and resistance current limliting
1.1On square being directly proportional of power consumption and pressure reduction have greatly improved.
The light-emitting diode chain that paired reverse parallel connection is in series again is in all conductings of positive and negative half cycle of civil power, and the frequency multiplication effect of its biphase rectification makes light-emitting diode light to be twice in mains frequency, has reduced the scintillation effect of light, and the effect of protection eyes is arranged.
Ceiling light requires the scope of illumination wide, and the light-emitting diode that optional visual angle is big also can be from distribution, the structure of lamp array.Repeatedly discrete reflectance between the structure of lampshade, lamp protective cover and lampshade and lamp protective cover is realized.
3. desk lamp
Desk lamp is often closely contact and the long-time lamps of being absorbed in of people, thus safety and vision protection----particularly infant and primary and secondary students' safety and eyesight are matters of utmost importance.The infant dodges frequency to lamp resolving power is stronger than the adult, and therefore strictly speaking, desk lamp is preferably without Alternating Current Power Supply, and uses direct current instead.For safety, desk lamp is also selected low-voltage power supply for use, and need not exchange or the high direct voltage power supply.
The people who has the band cardiac pacemaker in addition in the family, for fear of disturbing the power supply also should not select switch current stabilization control type for use, when its shielding measure not at that time, even can interference communications or some domestic electric appliances.
Therefore the most handy low voltage direct current of desk lamp source power supply, and brightness is adjustable continuously, light-emitting diode is selected spectrum and the approaching white light-emitting diode of daylight, for preventing the high light direct projection eyes of light-emitting diode, should make lampshade and protective cover with ground glass etc.
Fig. 4, Fig. 5 have provided two kinds of desk lamp patterns in numerous patterns.
Fig. 4 is in the more stable area usefulness of civil power, and Fig. 5 then is in the big area usefulness of civil power fluctuation range, and it can be at the manual jumper connection of the low-pressure end of transformer, and the change with civil power is adapted.
In Fig. 4,5, civil power LINE is through step-down transformer T
1.1Or T
5.1After reducing to safe voltage, its secondary voltage is through rectifier V
4.1Rectification, capacitor C
4.1, C
4.2Become unstabilized direct voltage after the filtering, be power light emitting diode arrays.
V
4.2Be a small-power low pressure pressurizer, it obtains supply power voltage from light emitting diode string, and this has just reduced its input voltage and has reduced its power consumption, and this part electric current has also been offered to light-emitting diode to reduce meaningless loss simultaneously.
V
4.2Voltage stabilizing output through potentiometer R
V4.1And resistance R
4.1Add to current source transistor Q after the dividing potential drop
4.1... Q
4.MGround level.Flow through light emitting diode string D
L4.1.1, D
L4.1.2... D
L4.1.NOr until D
L4.M.2..D
L4.M.NIn electric current by transistor Q
4.1... Q
4.MThe ground level current potential and penetrate a grade resistance R accordingly
4E.1... R
4E.MDecide, thereby determined the brightness of lamp, they can pass through R
V4.1Regulate continuously.
Fig. 6 has provided out another kind of desk lamp pattern, and itself and Fig. 4,5 difference are to have replaced simple voltage-controlled current source with mirror current source.
Resistance R
6.1With voltage-stabiliser tube D
V6.1Form simple pressurizer, in order to stable transistor Q
6.1The ground level current potential, they and transistor Q
6.1, resistance R
6.3, potentiometer R
6.1The simple current source of common composition.
Q
6.1Collector electrode output and Q
6.2, Q
6.3, Q
6.4.1Until Q
6.4.MM mirror current source of common composition, the corresponding light emitting diode string of difference de-energisation, its brightness will be by potentiometer R
V6.1Tracking.
The progression of lamp in parallel can become because of demand, and M can be 1, also can be certain number greater than 1.
4. mine lamp or other battery-powered lamps
For the purpose of downhole safety, mine lamp is generally all powered with A-battery.
Incandescent lamp is sparking and life-span weak point easily, and power consumption is big, easily causes down-hole accident.LED light lamp has its unique advantage in these areas.Fig. 7 is an example of mine lamp.
Battery E
7.1Through capacitor C
7.1Supply with all circuit after the filtering.
Integrated circuit V
7.3Be a pressurizer, its voltage stabilizing output supply with except that lamp and all need the circuit of voltage stabilizing work.
As battery E
7.1In the time of in normal range (NR), V
7.3The burning voltage of output is through voltage divider R
7.10And R
7.11Be added to current source transistor Q after the dividing potential drop
4.1... Q
4.MAll base stages, make their collector electrode supply with corresponding light emitting diode string, Schmidt trigger this moment (have lag behind position comparator) V with constant direct current
7.1Export 1 level, thus comparator U
7.2And V
7.3Export 1 level, brightness does not have influence to lamp yet, light-emitting diode D
L7.AExtinguish.
As battery E
7.1Discharge into and be near or below its discharge down in limited time, integrated circuit U
7.1Export 0 level, U
7.2And U
7.3Also export 0 level, resistance R
7.9With R
7.10, R
7.11Dividing potential drop again make transistor Q
4.1... Q
4.MBase potential reduce, current source current reduces, light deepening, light-emitting diode D
L7.ALuminous, send the low excessively alarm of cell voltage, remind the user to take measures.Light deepening current sinking reduces, and can continue the employed time of the surplus electricity of battery, handles problems so that the user has ample time.
5. the lamp modulated of brightness and color
At trade mark, advertisement, stage, dancing hall, festal occasion ... the field of waiting often needs the brightness of color with scene, music, dancing, pattern ... the variation that waits and the color lamp that changes, this can be realized by the circuit of Fig. 9.
Civil power is through rectifier U
4.1Rectification, capacitor C
9.1Be the entire circuit power supply after the filtering.
Resistance R
9.1With voltage-stabiliser tube D
V9.1Obtain a low pressure bias voltage, through capacitor C
9.2After the filtering respectively through resistance R
9R1, R
9G1, R
9B1Add to FET Q
9R, Q
9G, Q
9BGate pole, make to obtain a suitable biasing.
The source electrode of FET is respectively through resistance R
9R2, R
9G2And R
9B2Ground connection makes FETQ
9R, Q
9GAnd Q
9BBecome controlled current source.
FET Q
9RDrain electrode and power supply between seal in red light emitting diodes string D
L9R1... D
L9RN
FET Q
9GDrain electrode and power supply between seal in green LED string D
L9G1... D
L9GN
FET Q
9BDrain electrode and power supply between seal in yellow light-emitting diode string D
L9B1... D
L9BN
Same sequence number but the light-emitting diode of different glow colors abut against together, form a colour element jointly.
At Q
9R, Q
9G, Q
9BThe door end of mark R, G, B adds respective rule or irregular modulation signal respectively separately, then the brightness of respective point light and color will obtain Protean colour and brightness variation because of the colour mixture effect of consecutive points light, decide on modulation waveform, can fix, saltus step or continually varying.
Modulation waveform can be square wave, sawtooth waveforms, triangular wave, trapezoidal wave, sine wave, parabolic shape, two-way parabolic shape, sub warhead waveform, music, the language that frequency, phase difference are arranged between R, G, B ... or the like the rule or irregular waveform.
Same group of lamp can form the different pattern of point, line face because of the difference that distributes, and organizes the lamp group more and then can form more colourful pattern, and they can become because of demand.
6. pedestrian and bicycle traffic lights
Pedestrian and bicycle traffic lights have two kinds of operating states, i.e. Red Light, Stops.Though it can use high direct voltage, interchange or pulsation high-pressure work, we still power as a specific embodiment with high direct voltage.
In Fig. 8, civil power LINE IN adds to transformer T
8.1Elementary, it is secondary two windings.The low pressure winding is through rectifier U
8.2Rectification C
8.1, C
8.2Be added to pressurizer U after the filtering
8.3Input, the output after the voltage stabilizing is through C
8.5Supply with all low-voltage circuits after the filtering.
The secondary high pressure winding is through rectifier U
8.1Rectification, C
8.3, C
8.4Filtered not stable high voltage is as the high voltage source of LED light lamp.
Voltage divider R
8.3, R
8.4And R
8.5, R
8.6Being added to field-effect transistor Q after the low-tension supply dividing potential drop respectively
8.2And Q
8 ' 2Gate leve, they and field-effect transistor and corresponding source resistance R thereof
8.7, R
8 ' 7Two controlled current sources of common composition, and decision is gone here and there in the brightness of its light emitting diode string that drains separately.These two groups of light emitting diode string one are red, and one be green with corresponding to the forbidden of traffic lights and clearance.
Comparator U
8.4With U
8 ' 4In the former bearing just go into end connect together back and voltage divider R into the end and the latter
8.1, R
8.2Link to each other, their another input also connects together and through pull-up resistor R
8.8After draw, this exit is subjected to external commands for controlling.When instruction is 1 level, U
8.4Export 1 level, U
8 ' 4Export 0 level, therefore with the change of instruction level, field effect transistor Q
8.4And Q
8 ' 4Break-make alternately is red as the light-emitting diode of one, and another be a green, and then alternately being undertaken by instruction of traffic lights reaches the purpose that directs traffic.
Even its characteristics are that the light-emitting diode of series connection is a lot, when supply power voltage is very high, be added in Q
8.2And Q
8 ' 2On voltage and not really high, even large-area demonstration needs more light-emitting diode also need not to increase other drive circuit.
Its also available Figure 10,11 or the circuit of Figure 12 realize, only need the oscillator U wherein
11.9Cancellation gets final product.
7. automobile traffic command lamp
The difference of automobile traffic command lamp and bicycle traffic lights need to be the command lamp of red, green, yellow three kinds of colors.It often hangs over higher position than bicycle command lamp, so the brightness of its demonstration and area may require strict more.
Present traffic lights, red, green, yellow three looks show with three lamps, the purpose of this utility model is to integrate the three, make it play same effect, mode with the countdown timing code between can lasting red, green, yellow tri coloured lantern demonstration in addition is simultaneously displayed on the same lamp, allow the driver only be absorbed in the same lamp, and vicissitudinous countdown time showing, the preparation that promptly performs driving or stop before the countdown time closes to an end helps improving current rate and cuts down traffic accidents.Even can also be originally or introducing voice suggestion before finishing in its timing.
Traffic lights in the open, the variation of weather, the attack of wind, frost, rain, snow, hail, thunder, electricity happens occasionally, how resisting natural calamity also should be at the row of consideration.
Many traffic lights are away from big city or power network, and the civil power fluctuation range is very big, and problems such as reliability and power consumption answer emphasis to consider.
Figure 11 has provided a kind of circuit.
Civil power LINE IN is added in transformer T
11.1Elementary, it is secondary two windings.The low pressure winding is through rectifier U
11.3Rectification, capacitor C
11.1, C
11.2Add to pressurizer U after the filtering
11.8, it is exported through capacitor C
11.5, C
11.6Supply with the low-tension supply of all low-voltage circuits after the filtering.
Secondary high pressure has two taps around level, and they are respectively by optical coupled switch U
11.1, U
11.2Be connected to bridge rectifier U
11.4
Civil power is connected the back low-tension supply and is set up earlier, then sets up high voltage source.In the time of in normal civil power scope, the comparator U of the position that lags behind is arranged
11.7The terminal potential of just going into be higher than it and bear into terminal potential, its output current potential is 1 level, this makes comparator U
11.5Output 1, U
11.6Output 0, they make optical coupled switch U
11.2Logical, U
11.1End transformer T
11.1The tap of high pressure winding low voltage inserts hysteresis and is connected to follow-up current rectifying and wave filtering circuit U
11.4And C
11.3, C
11.4, and keep, make output voltage just in time close the symbol requirement, increase power consumption when avoiding high pressure to insert on foot.
When civil power is crossed when low integrated circuit U
11.7just go into to hold sampled signal can be lower than it to bear into terminal voltage and export 0 level, it makes integrated circuit U
11.5Export 0 level, U
11.6Export 1 level, make optical coupled switch U from face
11.2Turn-off U
11.1Connect rectifier U
11.4By transformer T
11.1The tap power supply of boosting, make voltage be elevated to desirable value, even so also can operate as normal in big civil power excursion and do not increase extra power consumption.
When external instruction order instruction contact R puts 0, controlled oscillator U
11.9Output 0, it makes comparator U
11.10Be output as 0, and U
11.11Be output as 1, at this moment optical coupled switch U
11.12And U
11.14Logical, and U
11.13And U
11.15Disconnected, high voltage source is through optical coupled switch U
11.2Add to by transistor Q
11.1, diode D
11.1, D
11.2, resistance R
11.12, R
11.13The constant-current source of forming is light emitting diode string D
L11.1... to D
L11.NSupply with constant current, again through optical coupled switch U
11.14Go into ground, this moment, traffic lights showed red.
When external instruction order instruction contact G termination is zero, integrated circuit U
11.9Be output as 1, it makes U
11.10Be output as 1, and U
11.1Be output as 0, at this moment optical coupled switch U
11.12And U
11.14End, and U
11.13And U
11.15Connect, high voltage source is through integrated circuit U
11.15Add to light emitting diode string D
L11 ' N... D
L11 ' 1And by transistor Q
11.2, diode D
11.4, D
11.3, resistance R
11.12, R
11.13The constant-current source of forming passes through light emitting diode string with constant current, again through optical coupled switch U
11.13To ground and green light.
When external instruction contact Y termination 0, integrated circuit U
11.9Not controlled and produce self-oscillation, at this moment it the time and export 0, the time and export 1, so traffic lights are alternately glittering since oppositely and the red and green luminous diode pair that connects with being loaded in the same shell, they from very near, if oscillator U
11.9Frequency of oscillation surpass the frequency that human eye vision may be differentiated, then red green two looks will be because of space-time colour mixture yellowly.This has just satisfied the requirement that shows red, green, yellow three looks in same lamp.Certainly, also available Y instruction removes to drive real amber light.
If the three kinds of required countdown times of state that stop, go, prepare of red, green, yellow three kinds of lamp representatives are simultaneously displayed in each colored lights, then this lamp is used more, the traffic lights that shows the time simultaneously can be saved cost greatly, improve driver's attentiveness, improve the traffic capacity, reduced the incidence of traffic accident.
Figure 12 has gone out the another kind of scheme of automobile traffic command lamp, and the difference of it and Figure 11 only is to use current source U
11.16, U
11.17, resistance R
11.16, R
11.17And isolating diode D
11.1, D
11.2The constant-current source of forming has replaced the current source of addressing among Figure 11.
Figure 10 has then provided another kind of scheme, and it is similar to the traffic lights of pedestrian and bicycle, has just increased a controlled oscillator U
11.9.
The high-voltage suppling power of these traffic lights also can be to exchange or impulse waveform, and they can develop from the method that aforementioned various lamp proposed and get, and do not enumerate one by one at this.
8. other lamps
Infrared lamp: can be used for fields such as physiotherapy, TV monitoring and controlling, antitheft, night reconnaissance.Except light-emitting diode and, its control circuit can be selected aforementioned any circuit arrangement or similar scheme for use because of needs.
Uviol lamp: can be used for fields such as sterilization, sterilization.For ultraviolet ray except that the wavelength of LED light lamp, the control circuit of its control and other lamps is without the slightest difference, can use as required.
Laser lamp: be used for fields such as physiotherapy, communication.Basically be the lamp of single wavelength, can select the proper method in the aforementioned various control method during physiotherapy utilization for use; Communication when utilization then its light modulation should be taken into account problems such as linearity correction in light-electric conversion.
Shadowless lamp: be used to perform the operation or other need not have the place of shadow.Make shadowless lamp with light-emitting diode, than more convenient with incandescent lamp, fluorescent lamp or other lamps, because its volume is little, easier realization multi-angle irradiation and reach the effect of no shadow.
The physiotherapy lamp: the physiotherapy lamp then can the comprehensively various characteristics that the therapeutic action lamp is arranged, and by the needs of treatment, it is adjustable or modulated that they are made light intensity, and frequency and waveform are variable, and wire, column or stereo structure are arranged, static state or dynamic operation.These lamps are different and their the purposes difference of the type of used light-emitting diode, and their energisation mode, can adopt one or more of aforementioned various lamp energisation modes fully, do not repeat them here.
Circuit block diagram: Figure 13 has provided total block diagram of summarizing various situations.The LED light lamp array can have two kinds of high voltage source HVPS, low-tension supply LVPS or wherein a kind of power supply, these power supplys can be the voltage sources of interchange, direct current or pulsating, and they can be by civil power, battery, solar cell ... the power supply that waits itself or got by its conversion.
The fluctuation of power supply can be controlled the control signal of comparing among the PSC and producing with reference source VR at power supply by high-voltage power supply HVPS or low pressure source LVPS and be adjusted, and makes in its scope that remains on appointment to reduce power consumption and whole system is worked reliable and stablely.
It is that LED light lamp array LED A power supply makes it luminous that high voltage source HVPS or low-tension supply LVPS become current source through current source CS circuit conversion.
The current strength of current source CS can be modulated it through modulator M by external modulation signal MS, can produce Protean tone and pattern for the light emitting diode matrix LEDA of polychrome.
The countdown timing code that time counter TC produces can make light emitting diode matrix LEDA show the timing code of countdown after decoder D decoding.
Claims (10)
1. light-emitting diode lamp series, be made up of elen shade, LED light lamp array and control circuit, it is characterized in that: its control circuit comprises reference power source, energy supply control module, high voltage source, low-tension supply, current source, modulator, modulation signal, LED light lamp array, decoder, time counter composition; Reference power source inserts energy supply control module, energy supply control module connects high voltage source and low-tension supply respectively, high voltage source connects current source, low-tension supply connects modulator circuit, modulator circuit connects modulation signal and current source respectively, and low-tension supply is told two after being connected to modulator circuit: one connects current source and LED light lamp array, and another connects modulation signal and time counter, time counter is connected to decoder, and decoder is connected to the LED light lamp array.
2. light-emitting diode lamp series according to claim 1 is characterized in that: the electric current of forward and reverse light-emitting diode is flow through in restriction, is to adopt by transistor (Q
2.1), diode (D
2.1, D
2.2), resistance (R
2.1), potentiometer (R
V2.1), resistance (R
2.2) the forward current source formed, and adopt by transistor (Q
2.2), diode (D
2.3, D
2.4), resistance (R
2.1, R
2.2), potentiometer (R
V2.1) the reverse current source formed, keeping the constant of maximum pulsating current, its current strength can be by potentiometer (R
V2.1) regulate.
3. light-emitting diode lamp series according to claim 1 is characterized in that: this series comprises: lamp, traffic lights and other special lamp that corridor lamp, luminous lamp, hall lamp, desk lamp, mine lamp or other powered battery lamp, brightness and color are modulated.
4. light-emitting diode lamp series according to claim 1 is characterized in that: the electric circuit characteristic of described corridor lamp or luminous lamp is to adopt transformer (T
1.1) with the civil power step-down, become the low-voltage alternating-current power supply; Light-emitting diode is to D
L1.1, D
L1.2... D
L1.NReverse parallel connection oppositely and after connecing is connected in pairs, seals in current-limiting resistance R again
1.1, be added on transformer T
1.1The inferior utmost point; Civil power is through transformer (T
1.1) step-down, rectifier (U
4.1) rectification, electric capacity (C
4.1, C
4.2) obtain the unstabilized direct voltage of low pressure after the filtering, supply with light-emitting diode (D
4.1.1, D
4.1.2... D
4.1.N) to light-emitting diode (D
4.M.1, D
4.M.2... D
4.M.N) connection in series-parallel Assembled lamp array; The right number N of described light-emitting diode may be as few as N=1.
5. light-emitting diode lamp series according to claim 1 is characterized in that: the electric circuit characteristic of described hall lamp is with transformer (T
1.1) higher inferior pole tension power supply, oppositely and the light-emitting diode that connects to row serial connection again, the right number N of described light-emitting diode is more than corridor lamp.
6. light-emitting diode lamp series according to claim 1 is characterized in that: pressurizer U
4.2The input of not stablizing take from light-emitting diode (D
L4.1.N-1) anode, the output of its stabilized voltage power supply is through potentiometer (R
V4.1), resistance (R
4.1) add to transistor (Q after the dividing potential drop
4.1... Q
4.M) base stage, by potentiometer (R
V4.1) can regulate the brightness of lamp continuously, the input current of pressurizer is supplied with light-emitting diode; For the bigger area of civil power excursion, the transformer time utmost point can be introduced a plurality of taps, in order to be adjusted to the most appropriate voltage.
7. light-emitting diode lamp series according to claim 1 is characterized in that: mine lamp or other powered battery lamp are powered by A-battery, to ensure safety; Pressurizer (U
7.3) by battery (E
7.1) power supply, its burning voltage is exported to integrated circuit (U
7.1, U
7.2, U
7.3) power supply
8. light-emitting diode lamp series according to claim 1 is characterized in that: the lamp that described brightness and color are modulated is formed its constant source flowing transistor (Q by red (R), green (G), blue (B) three groups of lamps
9R, Q
9G, Q
9B) gate pole by voltage-stabiliser tube (D
V9.1) be biased in fixed potential, add various modulation signals at the Men Duanke that is labeled as R, G, B.
9. light-emitting diode lamp series according to claim 1, it is characterized in that: described pedestrian traffic command lamp has two kinds of operating states of Red Light, Stop, it has low-voltage direct stabilized voltage power supply and two groups of electric power systems of high pressure, low pressure source is the LED light lamp power supply for all control circuit power supplies, high-voltage power supply;
Low pressure source of stable pressure (U
8.3) output through resistance (R
8.1, R
8.2) voltage divider gives integrated circuit (U
8.4) bear into end and (U
8 ' 4) the end of just going into fixed-bias transistor circuit, integrated circuit (U are provided
8.4) just go into end and integrated circuit (U
8 ' 4) bear into end and connect together and through pull-up resistor (R
8.8) be connected to low-tension supply;
Described high voltage source can be a direct current, pulsation or the voltage source that exchanges.
10. light-emitting diode lamp series according to claim 1 is characterized in that: described automobile traffic command lamp has red, green, yellow three kinds of operating states, and by mains-supplied, civil power adds to transformer (T
11.1) elementary, secondary have low pressure and two groups of windings of high pressure; The low pressure winding is through rectifier (U
11.3) rectification, electric capacity (C
11.1, C
11.2) add to pressurizer (U after the filtering
11.8) input, its voltage stabilizing output is through electric capacity (C
11.5, C
11.6) give all low-voltage circuits power supplies after the filtering; The transformer high-voltage winding has two taps, and one meets optocoupler bidirectional switch (U
11.1) an end, another meets optocoupler bidirectional switch (U
11.2) an end, the other end of two optocoupler bidirectional switchs links together and is connected to rectifier (U
11.4) an ac input end; The optocoupler bidirectional switch also can be other (for example relay) electronics bidirectional switchs; Rectifier (U
11.4) to high pressure winding AC rectification and through electric capacity (C
11.3, C
11.4) after the filtering high direct voltage, be the power supply of baroluminescence diode lights group;
LED light lamp is in series after by red, green two kinds of paired parallel connections again, and their forward and reverse electric current is by transistor (Q
11.1, Q
11.2), diode (D
11.1, D
11.2, D
11.3, D
11.4), resistance (R
11.12, R
11.13) forward and reverse current source of forming limits;
The switching of light emitting diode string electric current is by the optocoupler bidirectional switch (U that seals in its high pressure and ground end
11.12, U
11.13, U
11.14, U
11.15) determine;
This optical coupled switch can replace with other unidirectional or two-way electronic switches;
Integrated circuit (U
11.9) be a controlled oscillator, its control end (R, G, B) is subjected to the control of external instruction, when terminal (R) when putting 0, integrated circuit (U
11.9) output 0 level, it makes integrated circuit (U
11.10) output 0 level, and (U
11.11) output 1 level, this makes optocoupler bidirectional switch (U
11.12, U
11.14) logical, and (U
11.13And U
11.15) disconnected, the forward led current is by transistor (Q
11.1), light-emitting diode (D
L11.1, D
L11.2... D
L11.N-1, D
L11.N) circulation, they are red light emitting diodes, show ruddiness;
When terminal (G) when putting 0, integrated circuit (U
11.9) output 1 level, it makes integrated circuit (U
11.10) output 1 level, and (U
11.11) output 0 level, this makes optocoupler bidirectional switch (U
11.12, U
11.14) disconnected, and (U
11.13And U
11.1.5) logical, oppositely led current is by transistor (Q
11.2), light-emitting diode (DL
11 ' 1, DL
11 ' 2... DL
11 ' N-1, DL
11 ' N), they are green LEDs, show green;
When putting neutral gear terminal (Y), terminal (R, G) is all opened a way, integrated circuit (U
11.9) self-oscillation, it makes integrated circuit (U
11.10) and (U
11.11) alternately export 0 or 1, thus red and green luminous diode lamp luster (DL made
11.1... DL
11.N, DL
11 ' 1... DL
11 ' N) alternately light, be gold-tinted after its colour mixture, also available it remove to control single yellow fluorescent lamp;
Red, green, yellow three kinds of command lamps are realized in same lamp, and are shown with the digital form of countdown.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103200726A (en) * | 2012-01-05 | 2013-07-10 | 欧司朗股份有限公司 | Power supply circuit of control circuit of light-emitting diode (LED) lighting device and LED lighting device |
| TWI467876B (en) * | 2012-06-01 | 2015-01-01 | Delta Electronics Shanghai Co | Light emitting diode driving circuit |
| CN110363942A (en) * | 2019-07-19 | 2019-10-22 | 刘天欣 | A kind of optical fiber luminescent alarming device |
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2005
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103200726A (en) * | 2012-01-05 | 2013-07-10 | 欧司朗股份有限公司 | Power supply circuit of control circuit of light-emitting diode (LED) lighting device and LED lighting device |
| CN103200726B (en) * | 2012-01-05 | 2016-08-24 | 欧司朗股份有限公司 | The power supply circuits of the control circuit of LED illumination device and LED illumination device |
| TWI467876B (en) * | 2012-06-01 | 2015-01-01 | Delta Electronics Shanghai Co | Light emitting diode driving circuit |
| CN110363942A (en) * | 2019-07-19 | 2019-10-22 | 刘天欣 | A kind of optical fiber luminescent alarming device |
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