CN101938867A - LED illumination system and linear power supply thereof - Google Patents
LED illumination system and linear power supply thereof Download PDFInfo
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- CN101938867A CN101938867A CN2009102658537A CN200910265853A CN101938867A CN 101938867 A CN101938867 A CN 101938867A CN 2009102658537 A CN2009102658537 A CN 2009102658537A CN 200910265853 A CN200910265853 A CN 200910265853A CN 101938867 A CN101938867 A CN 101938867A
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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
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Abstract
The invention discloses an LED illumination system and a linear power supply using the illumination system. The LED illumination system comprises a plurality of LED units, at least one power supply used for supplying the power to the plurality of LED units and a power supply line of the plurality of LED units which are connected with the power supply. The LED illumination system is characterized in that the power supply is the linear power supply which has the output voltage of 160-220V, the plurality of LED units are a high-voltage LED light source with the work voltage of 160-220V, the linear power supply simultaneously supplies the power to the plurality of LED units through the power supply line, and the output power of the linear power supply is adapted to the power of the plurality of LED units. The LED illumination system and the linear power supply have the advantages of low cost, little self consumption, good energy saving effect and low reformation cost when utilizing an existing line.
Description
Technical field
The present invention relates to the LED lighting field, relate in particular to a kind of LED illuminator and a kind of linear power supply that electric energy is provided for the LED unit of this illuminator.
Background technology
LED (light-emitting diode) is a kind of solid-state semiconductor device that electric energy can be converted into visible light, and it can directly be converted into light to electricity.Owing to have easy control, low-voltage direct driving, make up advantages such as the back color representation is abundant, long service life, be widely used in every field.
LED can adopt modes such as localized lighting, decorative lighting, outline lighting in the general lighting field, is widely used in the illumination or the sign of commerce such as market, supermarket, hotel or complex; LED is in the road traffic field, except that traffic lights, LED also with energy-conservation, the life-span long, non-maintaining, volume is little etc., and characteristics progressively are applied to fields such as indicator light in the tunnel, street lamp, tunnel guiding, route guidance lamp.
Yet present LED illuminating engineering both domestic and external is an example with the street lighting engineering, all is to adopt single group Switching Power Supply, all adopts the combination of a power supply of a lamp at present both at home and abroad.Be that voltage is given light source in 32V left and right sides direct current output power supply, power is generally between 120W-240W.The critical defect of this mode is the weak point in useful life of these Switching Power Supplies normally, general about 2 years.3-4 also can only accomplish in this Switching Power Supply life-span in state-of-the-art country.A plurality of Switching Power Supplies, even do not consider its consumable, cost own is just higher, also will be after use the short 2-4 year, for the single switch power supply of each street lamp power supply, road lamp power supply promptly needs to change one time, make that the maintenance cost of this illuminator is also higher.Simultaneously, for the illuminator of existing employing ordinary light source, its existing line generally adapts to is lighting voltage about 220 volts, and existing LED illuminator is not well utilized the existing line of existing illuminator.
Except that above-mentioned deficiency, also there is another shortcoming in the LED illuminator of prior art, owing to be that the 32V low-voltage is carried, in the application of large power long distance, its lead must adopt the mode that increases diameter, otherwise can produce voltage drop.So also increased the construction cost of illuminator.As not adopting mode, then can make the illumination instability of illuminator again, deleterious to the lead overstriking.
The linear power supply of prior art mainly comprises Industrial Frequency Transformer, output rectifier filter, control circuit, protective circuit etc.Linear power supply is earlier with alternating current process transformer transformation, do not reached the direct voltage of stable state again through the rectification circuit rectifying and wave-filtering, reach high-precision direct voltage, must adjust output voltage through Voltage Feedback, linear power supply can reach very high stability, it is also very little to fluctuate, and the interference and the noise that do not have Switching Power Supply to have.But its shortcoming is to need huge and heavy transformer, the volume and weight of required filter capacitor is also quite big, and voltage feedback circuit is to be operated in linear condition, adjust on the pipe certain voltage drop is arranged, when the big operating current of output, cause the power consumption of adjusting pipe too big, conversion efficiency is low, also very big fin will be installed.
Summary of the invention
At problems of the prior art, the object of the present invention is to provide a kind of LED illuminator, it can be powered to a plurality of high voltage LED unit simultaneously with a power supply, reduces cost, and reduces loss.
Second purpose of the present invention is to provide a kind of linear power supply that is used for LED illuminator of the present invention, and it can be powered to a plurality of LED unit simultaneously, reduces cost, and reduces loss.
For achieving the above object, technical scheme of the present invention is as follows:
A kind of LED illuminator, comprise a plurality of LED unit, at least one is for the power supply of described a plurality of LED unit power supply and connect described power supply and the supply line of described a plurality of LED unit, described power supply is the linear power supply of output voltage between 160-220V, described LED unit is the high voltage led light source of operating voltage between 160-220V, and a described linear power supply is the power supply of described a plurality of LED unit by described supply line simultaneously, and the power of the power output of described linear power supply and described a plurality of LED unit adapts.
LED illuminator of the present invention, preferred, the asymmetric transformer winding of the transformer adopting all-wave in the described linear power supply, the rectifier cell of described linear power supply is the vacuum correction rectifier, two groups of coils of this asymmetric winding have the not collinear footpath and the number of turn.
LED illuminator of the present invention, preferred, the output voltage of described linear power supply is 160,170,180,190,200,210 or 220V.
LED illuminator of the present invention, preferred, have automatic constant-pressure constant flow module and automated power increase and decrease, extension and impulse current protection module in the described linear power supply.
LED illuminator of the present invention, preferred, described a plurality of LED unit is a LED unit group by tandem compound, the operating voltage of this unit group is between 160-220V; Or described a plurality of LED unit is connected in parallel to each other, a plurality of LED unit group is connected in parallel to each other, LED unit and LED unit group are connected in parallel to each other, and the operating voltage of each described LED unit and LED unit group is between 160-220V.
LED illuminator of the present invention, preferred, described two groups of coils form the current supply circuit that can be exchanged for the power supply of described a plurality of LED unit mutually respectively.
LED illuminator of the present invention, preferred, described LED illuminator is the street lamp illumination system of certain distance, described supply line is the dual-purpose supply line of AC/DC.
Linear power supply of the present invention, output voltage are between 160-220V, and the power of the power output of described linear power supply and a plurality of described LED unit adapts, to be the power supply of described a plurality of LED unit simultaneously.
Linear power supply of the present invention; preferably; the asymmetric transformer winding of the transformer adopting all-wave in the described linear power supply; two groups of coils of this asymmetric transformer winding have the not collinear footpath and the number of turn; the rectifier cell of described linear power supply is the vacuum correction rectifier, and described linear power supply also comprises automatic constant-pressure constant flow module and automated power increase and decrease, extension and impulse current protection module.
Linear power supply of the present invention, preferred, described two groups of coils form the current supply circuit of a plurality of described LED unit power supply that can be exchanged for a plurality of led light sources formations mutually respectively.The present invention has following beneficial effect than prior art and is the following aspects:
1. the present invention can take the asymmetric superlinearity power supply of high-power combination, carry (160V-220V) owing to take the high voltage tributary, power supply and light source voltage all can adopt this voltage, the existing line of therefore existing illuminator does not need to upgrade again, has saved the improvement cost that is transform as the led light source illuminator by the conventional light source illuminator greatly.And the alternating current circuit is applied to direct current supply, and in short distance and do not have under the situation of extensive electrical appliance of inductance, capacitive properties, ac power circuit and direct current supply line have versatility.
2. led light source illuminator of the present invention owing to adopt the supply power mode of a power supply to multiple light courcess, has reduced the consumable of power supply on the whole.About the consumable problem, if only also only compare with linear power supply of the present invention to the LED unit power supply that a led light source constitutes to a led light source power supply to adopting the Switching Power Supply about single 120W, effect is also not obvious, and the cost of linear power supply of the present invention is also a little more than Switching Power Supply.But be combined to more than 5 times, be the power (is that basic point calculates with 120W) of the led light source power supply that is connected into to 5 led light sources simultaneously of single linear power supply of the present invention, the consumable of linear power supply of the present invention is littler, cost is lower, if this multiple is 10 times, 20 times, 50 times ..., then its contrast effect is more obvious.
3, the consumable of a plurality of Switching Power Supplies can be much smaller compared to existing technology for the consumable of single high-power linear power supply of the present invention.Linear power supply of the present invention and conventional switch power supply consumable power can be by to down contrasts: for example the power output sum is that the total consumable of a plurality of Switching Power Supplies of 600W is 10W in the prior art, and the single power output of the present invention is the consumable power of the linear power supply of 600W is 5W, by that analogy, under the situation of equal-wattage power output, the consumable power of linear power supply of the present invention only is 50% of a prior art Switching Power Supply.
4. the asymmetric transformer winding of all-wave of the present invention also can reduce the consumable of linear power supply of the present invention.
5. the present invention can be designed to switch between two groups of linear power supplies for the power supply of a plurality of LED unit, and stability and the useful life that also can improve illuminator is used in the exchange of these two groups of linear power supplies, and its life-span can be greater than 10 years.
Description of drawings
Fig. 1 is the schematic diagram of the linear power supply of the preferred embodiment of the present invention.
Fig. 2 is the schematic diagram of the led light source illuminator of first embodiment of the invention.
Fig. 3 is the schematic diagram of the led light source illuminator of second embodiment of the invention.
Embodiment
In order to make technical problem to be solved by this invention, technical scheme and beneficial effect clearer,, the present invention is further elaborated below in conjunction with specific embodiment.Should be pointed out that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Introduce the linear power supply of the embodiment of the invention earlier.
As shown in Figure 1, the linear power supply of first embodiment of the invention, the one-level winding of its transformer links to each other with common civil power.The secondary winding of transformer is taked the asymmetric winding of all-wave, and as shown in Figure 1, the secondary winding is at two coils of tap both sides, and its number of turn difference and line footpath are also different, can reduce consumable, also can compensate the extension voltage difference.The rectifier cell of this linear power supply is the vacuum correction rectifier, and as shown in Figure 1, rectifier cell 23 and rectifier cell 24 can use the rectifier cell of prior art, but vacuum correction rectifier cell preferably, take at the secondary winding under the situation of asymmetric winding, have different operating voltages on rectifier cell 23 and the rectifier cell 24, for example the voltage of rectifier cell 23 is 240V, and the voltage on the rectifier cell 24 is 200V.
LED illuminator of the present invention and LED linear power supply of the present invention; on as shown in Figure 1 rectifier cell 23 and rectifier cell 24, can distinguish an integrated switch (not shown); perhaps on rectifier cell 23 place branch roads and rectifier cell 24 place branch roads, a switch (not shown) is set respectively; by controlling described two switches; in rectifier cell 23 respective switch conductings; under the situation that rectifier cell 24 respective switch disconnect; linear power supply of the present invention is equivalent to the coil by the tap top; rectifier cell 23; automatic constant-pressure; galvanostat 22; the automated power increase and decrease; the loop that extension and impulse current protection module 21 are formed provides the output voltage of this linear power supply, promptly powers to led light source.In rectifier cell 24 respective switch conductings; under the situation that rectifier cell 23 respective switch disconnect; linear power supply of the present invention is equivalent to be provided by the loop that coil, rectifier cell 24, automatic constant-pressure, galvanostat 22, automated power increase and decrease, extension and the impulse current protection module 21 of tap below are formed the output voltage of this linear power supply, promptly powers to led light source.Form the tradable current supply circuit of two covers thus.
Linear power supply of the present invention can be selected constant voltage, the galvanostat of prior art for use because of its automatic constant-pressure, galvanostat 22, and it has two kinds of operating states, a kind of is pressure constant state, feature according to constant voltage source is being worked, and a kind of is constant current state, is working according to the feature of constant-current supply.There are two control units automatic constant-pressure, galvanostat inside, and one is the voltage stabilizing control unit, under the situation that load changes, make output voltage keep stable, and prerequisite is that output current must be less than predefined constant current value.In fact when pressure constant state, the constant current control unit is in dormant state, and it does not disturb output voltage and output current.When progressively reducing owing to load resistance, make when load current is increased to predefined constant current value, the constant current control unit is started working, its task is under the situation that load resistance continues to reduce, make great efforts to make output current to remain unchanged, need to make output voltage to decrease for this reason along with reducing of load resistance by predetermined constant current value.These all are the constant current functions of components, and when the constant current parts were worked, the constant voltage parts also were in dormant state, and it no longer intervenes the height of output voltage.By the effect of automatic constant-pressure, galvanostat, make linear power supply of the present invention that stable voltage and current output can be arranged, guarantee the stability of led light source work.
For the fluctuation of tackling the power of led light source in the LED illuminator and the sudden change of electric current, linear power supply of the present invention is provided with power back-off and impulse current protective device, i.e. automated power increase and decrease, extension and impulse current protection module 21.This power back-off and impulse current protective device one end are connected in the tap of secondary winding.Automated power increase and decrease, extension and impulse current protection module 21 can integrated prior art the power compensator with simple function or combination function, extensive protection device, impulse current protector and realize.
The LED illuminator of first embodiment of the invention, the linear power supply that can have the embodiment of the invention also can adopt common linear power supply.This embodiment can be used in as in the LED illuminators such as street lamp.
As shown in Figure 2, be five LED unit LEDs 11, LED12, LED13, LED14 and LED15 power supply simultaneously by same linear power supply.Connect this linear power supply after five LED unit parallel connections.The output voltage of this linear power supply is consistent with the operating voltage of each LED unit, all between 160-220V.Can use single high voltage LED group or LED unit (high voltage LED unit can be connected into high voltage LED unit by single LED).This kind connected mode is suitable for the application scenario that street lamp etc. has identical LED unit, during this is used, the number of LED unit is not limited to five in the present embodiment, can select the number of street lamp according to actual conditions (as the length of road, road environment, traffic etc.), promptly select the number of LED unit.LED unit on certain distance has a linear power supply to be its power supply.The gross power of supposing the LED illuminator of this street lamp is 12000W (with every lamp 120W * 100 calculating).Distance between every lamp is a spacing with 30-40 rice, and linear power supply of the present invention just can be controlled the led light source of 3-4km distance so, is the led light source power supply of 3-4km distance.Carry (160V-220V) owing to take the high voltage tributary, power supply and light source voltage all can adopt this voltage, therefore the former circuit of street lamp does not need to upgrade again, simultaneously, and the alternating current circuit is applied to direct current supply, in short distance and do not have under the situation of extensive electrical appliance of inductance, capacitive properties, ac power circuit and direct current supply line have versatility.Therefore, saved cost greatly.Simultaneously, its power supply number also by 100 original Switching Power Supplies, is reduced to a linear power supply, has promptly reduced consumable, has also made things convenient for maintenance.
As shown in Figure 3, be five LED unit (or unit group) LED21, LED22, LED23, LED24 and LED25 power supply simultaneously by same linear power supply.Back in parallel, five LED unit (or group) connects this linear power supply.As shown in the figure, unit group LED22 is made up of LED221 and LED222, unit group LED24 is made up of LED241, LED242 and LED243, output voltage as this linear power supply is 180V, then the operating voltage after the unit group LED22 combination also is 180V, and then the operating voltage after the unit group LED24 combination also is 180V.This kind connected mode is suitable for the application scenario that supermarket etc. has not necessarily identical LED unit, during this is used, the number of LED unit equally also is not limited to five the LED unit (group) in the present embodiment, can select the road to select the number and the combination thereof of LED unit according to actual conditions.
So far it is explanation of the invention that execution mode as herein described is construed as, but not limitation of the present invention.Scope of the present invention is not to be illustrated by above specification, but is limited by the claim of patent, this invention is intended to comprise all corrections that meaning and scope with this patent claim are equal to.
Claims (10)
1. LED illuminator, comprise a plurality of LED unit, at least one is for the power supply of described a plurality of LED unit power supply and connect described power supply and the supply line of described a plurality of LED unit, it is characterized in that, described power supply is the linear power supply of output voltage between 160-220V, described a plurality of LED unit is the high voltage led light source of operating voltage between 160-220V, and a described linear power supply is the power supply of described a plurality of LED unit by described supply line simultaneously, and the power of the power output of described linear power supply and described a plurality of LED unit adapts.
2. LED illuminator as claimed in claim 1, it is characterized in that, the asymmetric transformer winding of the transformer adopting all-wave in the described linear power supply, the rectifier cell of described linear power supply is the vacuum correction rectifier, two groups of coils of this asymmetric winding have the not collinear footpath and the number of turn.
3. LED illuminator as claimed in claim 1 is characterized in that, the output voltage of described linear power supply is 160,170,180,190,200,210 or 220V.
4. LED illuminator as claimed in claim 1 or 2 is characterized in that, has automatic constant-pressure constant flow module and automated power increase and decrease, extension and impulse current protection module in the described linear power supply.
5. LED illuminator as claimed in claim 4 is characterized in that, described a plurality of LED unit is a LED unit group by tandem compound, and the operating voltage of this unit group is between 160-220V; Or described a plurality of LED unit is connected in parallel to each other, a plurality of LED unit group is connected in parallel to each other, LED unit and LED unit group are connected in parallel to each other, and the operating voltage of each described LED unit and LED unit group is between 160-220V.
6. LED illuminator as claimed in claim 2 is characterized in that, described two groups of coils form the current supply circuit that can be exchanged for the power supply of described a plurality of LED unit mutually respectively.
7. as claim 1 or 6 described LED illuminators, it is characterized in that described LED illuminator is the street lamp illumination system of certain distance, described supply line is the dual-purpose supply line of AC/DC.
8. linear power supply that is used for the described LED illuminator of claim 1, it is characterized in that, the output voltage of this linear power supply is between 160-220V, and the power of the power output of described linear power supply and described a plurality of LED unit adapts, to be the power supply of described a plurality of LED unit simultaneously.
9. linear power supply as claimed in claim 8; it is characterized in that; the asymmetric transformer winding of the transformer adopting all-wave in the described linear power supply; two groups of coils of this asymmetric transformer winding have the not collinear footpath and the number of turn; the rectifier cell of described linear power supply is the vacuum correction rectifier, and described linear power supply also comprises automatic constant-pressure constant flow module and automated power increase and decrease, extension and impulse current protection module.
10. linear power supply as claimed in claim 9 is characterized in that, described two groups of coils form the current supply circuit that can be exchanged for the power supply of described LED unit mutually respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009102658537A CN101938867A (en) | 2009-12-29 | 2009-12-29 | LED illumination system and linear power supply thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009102658537A CN101938867A (en) | 2009-12-29 | 2009-12-29 | LED illumination system and linear power supply thereof |
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| CN101938867A true CN101938867A (en) | 2011-01-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105990837A (en) * | 2014-09-19 | 2016-10-05 | 旭辰资讯股份有限公司 | Total amount control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105990837A (en) * | 2014-09-19 | 2016-10-05 | 旭辰资讯股份有限公司 | Total amount control system |
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Application publication date: 20110105 |