CN103987149A - Dimmable light-emitting-diode illumination system - Google Patents

Dimmable light-emitting-diode illumination system Download PDF

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Publication number
CN103987149A
CN103987149A CN201310050568.XA CN201310050568A CN103987149A CN 103987149 A CN103987149 A CN 103987149A CN 201310050568 A CN201310050568 A CN 201310050568A CN 103987149 A CN103987149 A CN 103987149A
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China
Prior art keywords
direct current
current signal
voltage
light
magnitude
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Granted
Application number
CN201310050568.XA
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Chinese (zh)
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CN103987149B (en
Inventor
林铭锋
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HEP Tech Co Ltd
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HEP Tech Co Ltd
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Priority to CN201310050568.XA priority Critical patent/CN103987149B/en
Priority to JP2015556377A priority patent/JP6101941B2/en
Priority to PCT/CN2014/000121 priority patent/WO2014121661A1/en
Publication of CN103987149A publication Critical patent/CN103987149A/en
Application granted granted Critical
Publication of CN103987149B publication Critical patent/CN103987149B/en
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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/10Controlling the intensity of the light

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  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

Disclosed is a dimmable light-emitting-diode illumination system which includes a power-supply conversion circuit and a light fixture. The power-supply conversion circuit is electrically connected with a power supply so as to receive electrical energy of the power supply and convert and output a voltage signal. The light fixture includes a DC/DC convertor and a light-emitting-diode light group. The DC/DC convertor is electrically connected with the power-supply conversion circuit so as to receive the voltage signal and covert and output a corresponding current signal. The light-emitting-diode light group is electrically connected with the DC/DC convertor so as to receive the current signal to generate light. Through adjustment of the output voltage of the power-supply conversion circuit, current output by the DC/DC convertor can be adjusted so that the luminance of the light-emitting-diode light group can be changed.

Description

The LED illumination system of tunable optical
Technical field
The present invention is application light-emitting diode, refers to especially a kind of LED illumination system that utilizes light-emitting diode to produce bright tunable optical of throwing light on.
Background technology
Current modal fluorescent lamp illuminating system, for reaching the selection of different brightness, select brightness (because fluorescent tube cannot light modulation the combination of bright pipe number that utilizes different fluorescent tubes, can only have bright, two states goes out), but take this kind of method will cause again the bright uniform phenomenon of illumination, and this kind of compound mode can limit to some extent because of the fluorescent tube number that light fixture can be supported.
And the in the situation that of pay attention to day by day environmental protection now, energy transition rate, because light-emitting diode has the preferably efficiency of electric light conversion compared to incandescent lamp bulb and fluorescent lamp.Therefore in the application of illuminator, LED light lamp group has the trend that gradually replaces incandescent lamp and fluorescent lamp.And the design focal point of the illuminator of current light-emitting diode is all how can, in the time that input voltage changes, can also make its brightness constant by stabilized driving light-emitting diode.Therefore how to make to use the illuminator of light-emitting diode can effectively adjust the brightness of illumination by circuit design, real is that each dealer thinks hard the direction of creation now.
Summary of the invention
In view of this, main purpose of the present invention is to provide an illuminator, can effectively adjust the brightness of the illuminator that uses light-emitting diode.
Edge has been reached above-mentioned purpose, and the LED illumination system of tunable optical provided by the invention includes a power-switching circuit and at least one light fixture; Wherein, this power-switching circuit and a power supply are electrically connected, in order to receive the electric energy of this power supply, and conversion output one first direct current signal; The magnitude of voltage of this first direct current signal is between one first magnitude of voltage and a second voltage value, and this first magnitude of voltage is greater than this second voltage value; This at least one light fixture includes a DC-DC converter and a LED light lamp group, this DC-DC converter is electrically connected this power-switching circuit, receive this first direct current signal of this power-switching circuit output, and the second direct current signal of conversion output one correspondence, and the current value of this second direct current signal is to magnitude of voltage that should the first direct current signal, and between one first current value and one second current value; In the time that the magnitude of voltage of this first direct current signal is this first magnitude of voltage, the current value of this second direct current signal is this first current value; In the time that the magnitude of voltage of this first direct current signal is this second voltage value, the current value of this second direct current signal is this second current value; This LED light lamp group, is electrically connected with this DC-DC converter, receives this second direct current signal to produce light.
According to above-mentioned design, this power-switching circuit is also changed output one the 3rd direct current signal, and the magnitude of voltage of the 3rd direct current signal is also between this first magnitude of voltage and this second voltage value; This DC-DC converter receives after the 3rd direct current signal, the 4th direct current signal of conversion output one correspondence, and the current value of the 4th direct current signal is also to magnitude of voltage that should the 3rd direct current signal, and between this first current value and this second current value; In addition, this LED light lamp group includes multiple the first light-emitting diodes and multiple the second light-emitting diode, and described the second light-emitting diode photochromic is different from the photochromic of described the first light-emitting diode; Described the first light-emitting diode receives this second direct current signal, and described the second light-emitting diode receives the 4th direct current signal.
According to above-mentioned design, this at least one light fixture is multiple light fixtures, and the connection parallel with one another of described light fixture.
The invention has the beneficial effects as follows: by above-mentioned design, just can be by the voltage control of direct current signal, effectively reach the object of adjusting illuminator brightness.
Brief description of the drawings
For being illustrated more clearly in the present invention, below in conjunction with preferred embodiment and coordinate accompanying drawing to be described in detail as follows, wherein:
Fig. 1 is the circuit block diagram of the illuminator of the first embodiment;
Fig. 2 is the circuit block diagram of the illuminator of the second embodiment.
Embodiment
Refer to Fig. 1, the LED illumination system of the tunable optical of the present invention's the first preferred embodiment is a track lamp system, and includes a power-switching circuit 10, two tracks 20 and multiple groups of light fixtures 30.Wherein:
This power-switching circuit 10 is electrically connected a power supply 100, in order to receive the electric energy of this power supply 100, and export after converting the electric energy of this power supply 100 to one first direct current signal, the magnitude of voltage of this first direct current signal is between one first magnitude of voltage and a second voltage value, and this first magnitude of voltage is greater than this second voltage value.In the present embodiment, this power supply 100 is a civil power, in order to the alternating current (according to regional difference, being likely also other magnitudes of voltage between 90 volts-264 volts) of one 110 volts to be provided.This power-switching circuit 10 is with pulse width modulation (Pulse Width Modulation, PWM) circuit is that basis is designed, and makes the voltage of the first direct current signal of exporting between 12 volts (second voltage values) to 24 volts (first magnitudes of voltage).Actual implement above, this first direct current signal also can be between other voltage ranges (as 36 volts-48 volts), and this power supply 100 also can be generator, battery or other and can produce the member of electric energy.In addition, this power-switching circuit 10 is except using pulse width modulation circuit, also semibridge system rectification, bridge rectifier or other can convert the electric energy of reception to galvanic circuit design.
This two track 20 is to make with conductor (as metal or alloy such as copper, aluminium, iron) material, there is certain length (approximately 2 meters), and be arranged in parallel on the ceiling or metope (not shown) of building, and be connected with this power-switching circuit 10.And the magnitude of voltage of the first direct current signal that this power-switching circuit 10 is exported is the potential difference of 20, this two track.Certainly, except using track 20, also other as power lead or other conductor to be arranged in parallel.
Described light fixture 30 is to be located on this two track 20, and connection parallel with one another.Respectively this light fixture 30 includes a DC-DC converter 32 and a LED light lamp group 34.Wherein, this DC-DC converter 34 is electrically connected these power-switching circuits 10 by this two track 20, mainly after the voltage signal of direct current being converted to the current signal of corresponding direct current, exports.Meaning, after this first direct current signal that these DC-DC converter 32 these power-switching circuits 10 of reception are exported, just by the second direct current signal of this first direct current signal conversion output one correspondence, the current value of this second direct current signal is to magnitude of voltage that should the first direct current signal, and between one first current value and one second current value.In the present embodiment, the current value of this second direct current signal that this DC-DC converter 32 is exported is and between 10 milliamperes (second current values) to 500 milliamperes (first current values), and in the time that the magnitude of voltage of this first direct current signal is 24 volts (first magnitude of voltage), the current value of this second direct current signal is 500 milliamperes (first current values), in the time that the magnitude of voltage of this first direct current signal is 12 volts (second voltage value), the current value of this second direct current signal is 10 milliamperes (second current values).In other words, the current value of this second direct current signal is the magnitude of voltage that is proportional to this first direct current signal.Certainly,, on reality is implemented, this second current value also can change other current values that are more than or equal to zero on demand into.
This LED light lamp group 34 has multiple light-emitting diodes, and be electrically connected this DC-DC converter 32, in order to continue receiving the second direct current signal that this DC-DC converter 32 is exported, so that described light-emitting diode produces the function that light provides user to throw light on.In addition, well known, the brightness of light-emitting diode is and the proportional relation of electric current of supplying with that in other words, when larger for the electric current that gives LED light lamp group 34, the brightness of the light of its generation is larger.Otherwise for the electric current that gives LED light lamp group 34 more hour, the brightness of the light of its generation is less.
Thus, by above-mentioned simple circuit design, program-controlled in cooperation, external adjustable electric group, applied voltage modulation or other are adjusted the circuit design of these power-switching circuit 10 output voltages, just can effectively adjust the current value that described DC-DC converter 32 is exported, and then the brightness of the light that produces of the LED light lamp group 34 that reaches all light fixtures 30 of synchronous adjustment, make user more simple, convenient and quick in the operation of the LED illumination system of tunable optical.
In addition, except above-mentioned design, refer to Fig. 2, the LED illumination system of the tunable optical of the present invention's the second preferred embodiment also can reach the effect that changes illumination colourity.This illuminator includes a power-switching circuit 40, three track 51-53 and multiple groups of light fixtures 60.Wherein:
This power-switching circuit 40 is to receive after the electric energy of this power supply 100 with previous embodiment difference, except conversion output one first direct current signal, output has one the 3rd direct current signal more again, and the magnitude of voltage of the 3rd direct current signal is also between this first magnitude of voltage and this second voltage value (24 volts to 12 volts).
This three track 51-53 is respectively one first track 51, one second track 52 and one the 3rd track 53, make with conductor (as metal or alloy such as copper, aluminium, iron) material equally, and be arranged in parallel on the ceiling or metope (not shown) of building, and be connected with this power-switching circuit 40, and the magnitude of voltage of the first direct current signal that this power-switching circuit 40 is exported is the potential difference between this first track 51 and this second track 52; The magnitude of voltage of the 3rd direct current signal that this power-switching circuit 40 is exported is the potential difference between the 3rd track 53 and this second track 52.Certainly, except using track 5153, also other as power lead or other conductor to be arranged in parallel.
Described light fixture 60 is to be located at this three track 51-53 above, and connection parallel with one another.Respectively this light fixture 60 includes a DC-DC converter 62 and a LED light lamp group 64 equally.Wherein, this DC-DC converter 62 is electrically connected this power-switching circuit 40 by this three track 51-53, after this first direct current signal being converted to the second corresponding direct current signal, export, and export after the 4th direct current signal corresponding to the 3rd direct current signal converting to, and the current value of this second direct current signal is the magnitude of voltage that is proportional to this first direct current signal, the current value of the 4th direct current signal is the magnitude of voltage that is proportional to the 3rd direct current signal, and the current value of this second direct current signal and the 4th direct current signal also between this first current value between this second current value (500 milliamperes to 10 milliamperes).Certainly,, on reality is implemented, this second current value also can change other current values that are more than or equal to zero on demand into.
64 of this LED light lamp groups include multiple the first light-emitting diodes 641 and multiple the second light-emitting diode 642, and described the second light-emitting diode 642 photochromic is different from the photochromic of described the first light-emitting diode 641, for instance, the photochromic of this first light-emitting diode 641 is cold light colour system (as white light, blue light etc.), and the photochromic of this second light-emitting diode 642 is warm photochromic system (as gold-tinted, ruddiness etc.), to reach the effect of adjusting colour temperature.In addition, described the first light-emitting diode 641 is to receive this second direct current signal, and described the second light-emitting diode 642 receives the 4th direct current signal.
Thus, by above-mentioned simple circuit design, coordinate the circuit design of any magnitude of voltage that can adjust respectively this first direct current signal that this power-switching circuit 40 exports and the 3rd direct current signal, except can reaching the order of adjusting brightness, just can effectively adjust this second direct current signal that described DC-DC converter 62 exports and the current value of the 4th direct current signal, reach the brightness of adjusting respectively described the first light-emitting diode 641 and described the second light-emitting diode 642, and then change the colourity of the light of the LED light lamp group generation of all light fixtures.
In addition, more than explanation is only preferred embodiment of the present invention, except as above-mentioned being applied to track lamp, also can be applicable to other lightings such as desk lamp, street lamp, and the equivalent structure that other every application specification of the present invention and claim are done changes, and ought to be included within the scope of claim of the present invention.

Claims (9)

1. a LED illumination system for tunable optical, includes:
One power-switching circuit, is electrically connected with a power supply, receives the electric energy of this power supply, and conversion output one first direct current signal; The magnitude of voltage of this first direct current signal is between one first magnitude of voltage and a second voltage value, and this first magnitude of voltage is greater than this second voltage value; And
At least one light fixture, includes:
One DC-DC converter, be electrically connected this power-switching circuit, receive this first direct current signal of this power-switching circuit output, and the second direct current signal of conversion output one correspondence, and the current value of this second direct current signal is to magnitude of voltage that should the first direct current signal, and between one first current value and one second current value; In the time that the magnitude of voltage of this first direct current signal is this first magnitude of voltage, the current value of this second direct current signal is this first current value; In the time that the magnitude of voltage of this first direct current signal is this second voltage value, the current value of this second direct current signal is this second current value; And
One LED light lamp group, is electrically connected with this DC-DC converter, in order to receive this second direct current signal to produce light.
2. the LED illumination system of tunable optical according to claim 1, wherein, this first current value is greater than this second current value, makes the current value of this second direct current signal be proportional to the magnitude of voltage of this first direct current signal.
3. the LED illumination system of tunable optical according to claim 2, wherein, this second current value is more than or equal to zero.
4. the LED illumination system of tunable optical according to claim 1, wherein, also includes two tracks of making and be arrangeding in parallel with conductor, is connected with this power-switching circuit; And this at least one light fixture is to be located on this two track, and this DC-DC converter is electrically connected by this two track and this power-switching circuit; The magnitude of voltage of this first direct current signal refers to this two interorbital potential difference.
5. the LED illumination system of tunable optical according to claim 1, wherein, this power-switching circuit is also changed output one the 3rd direct current signal, and the magnitude of voltage of the 3rd direct current signal is also between this first magnitude of voltage and this second voltage value; This DC-DC converter receives after the 3rd direct current signal, the 4th direct current signal of conversion output one correspondence, and the current value of the 4th direct current signal is also to magnitude of voltage that should the 3rd direct current signal, and between this first current value and this second current value; In addition, this LED light lamp group includes multiple the first light-emitting diodes and multiple the second light-emitting diode, and described the second light-emitting diode photochromic is different from the photochromic of described the first light-emitting diode; Described the first light-emitting diode receives this second direct current signal, and described the second light-emitting diode receives the 4th direct current signal.
6. the LED illumination system of tunable optical according to claim 5, also includes three tracks of making and be arrangeding in parallel with conductor, is respectively one first track, one second track and one the 3rd track, and is connected with this power-switching circuit; This at least one light fixture is located on this three track, and this DC-DC converter is electrically connected by described track and this power-switching circuit; The magnitude of voltage of this first direct current signal refers to this first track and this second interorbital potential difference; The magnitude of voltage of the 3rd direct current signal refers to the 3rd track and this second interorbital potential difference.
7. the LED illumination system of tunable optical according to claim 5, wherein, this first current value is greater than this second current value, makes the current value of this second direct current signal be proportional to the magnitude of voltage of this first direct current signal; The current value of the 4th direct current signal is proportional to the magnitude of voltage of the 3rd direct current signal.
8. the LED illumination system of tunable optical according to claim 7, wherein, this second current value is more than or equal to zero.
9. the LED illumination system of tunable optical according to claim 1 or 5, wherein, this at least one light fixture is multiple light fixtures, and the connection parallel with one another of described light fixture.
CN201310050568.XA 2013-02-08 2013-02-08 The LED illumination system of tunable optical Expired - Fee Related CN103987149B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201310050568.XA CN103987149B (en) 2013-02-08 2013-02-08 The LED illumination system of tunable optical
JP2015556377A JP6101941B2 (en) 2013-02-08 2014-01-28 Dimmable LED lighting system
PCT/CN2014/000121 WO2014121661A1 (en) 2013-02-08 2014-01-28 Dimmable light-emitting diode illumination system

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Application Number Priority Date Filing Date Title
CN201310050568.XA CN103987149B (en) 2013-02-08 2013-02-08 The LED illumination system of tunable optical

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CN103987149B CN103987149B (en) 2016-04-20

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WO (1) WO2014121661A1 (en)

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JP2016509746A (en) 2016-03-31
WO2014121661A1 (en) 2014-08-14
CN103987149B (en) 2016-04-20
JP6101941B2 (en) 2017-03-29

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