CN101990341A - Electric power device, and lighting fixture - Google Patents
Electric power device, and lighting fixture Download PDFInfo
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- CN101990341A CN101990341A CN2010102424594A CN201010242459A CN101990341A CN 101990341 A CN101990341 A CN 101990341A CN 2010102424594 A CN2010102424594 A CN 2010102424594A CN 201010242459 A CN201010242459 A CN 201010242459A CN 101990341 A CN101990341 A CN 101990341A
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Abstract
The present invention relates to an electric power device and a lighting fixture. The electric power device can supply optimal AC output or DC output for a discharge lamp or an LED component which is used as a light source. Through a light source determination part 202 of a control part 20, a condition that the light source is the discharge lamp 30 or the LED illuminating lamp 32 is determined according to the resistance of a filament 302 of the discharge lamp 30 and the resistance of a resistor 34 (35) set in the LED illuminating lamp 32. According to the determination result, if the light source is determined to the discharge lamp 30, a phase inverter circuit is formed through an output generation circuit 21. Furthermore high-frequency AC output is supplied to the discharge lamp 30. If the light source is determined to the LED illuminating lamp 32, a buck chopper is formed through the output generation circuit 21. Furthermore the DC output is supplied to the LED illuminating lamp 32.
Description
Technical field
The present invention relates to a kind of discharge lamp that can light as light source, particularly relate to the supply unit and the ligthing paraphernalia of a kind of light-emitting diode semiconductor light-emitting elements such as (LED (Light Emitting Diode) elements).
Background technology
In the past, in supply unit, known had a supply unit that the discharge lamp of fluorescent lamp etc. is lighted as light source.Described supply unit is to use the inverter formula supply unit of inverter circuit, and it lights discharge lamp by the switch periods (operating frequency) that control constitutes the switch element of inverter circuit.
On the other hand, recently, use the LED element as the LED illuminating lamp of light source practicability, industry considers that also a kind of this kind LED illuminating lamp that uses substitutes the lighting device (patent documentation 1) that supply unit that discharge lamp also can utilize the inverter mode is lighted this kind LED illuminating lamp.
[patent documentation 1] Japan Patent spy opens the 2008-103304 communique
But, according to patent documentation 1, directly use the supply unit of the inverter mode of lighting discharge lamp as supply unit, the alternating electromotive force of the high frequency that the diode-bridge circuit by being assembled into LED illuminating lamp inside will be exported from supply unit converts direct current power to and lights the LED element, therefore stable direct current output can't be guaranteed, and flicker etc. can be produced in the LED element sometimes.In addition, owing to be assembled into the circuit formation of complexity such as a plurality of diode-bridge circuits in LED illuminating lamp inside, so the LED illuminating lamp is expensive with regard to price, if the LED illuminating lamp of a plurality of this kind costlinesses is set, so also has disadvantageous economically problem.
This shows that above-mentioned existing supply unit obviously still has inconvenience and defective, and demands urgently further being improved in structure and use.Therefore how to found a kind of supply unit and ligthing paraphernalia of new structure, also becoming the current industry utmost point needs improved target.
Summary of the invention
The objective of the invention is to, overcome the defective that existing supply unit exists, and a kind of supply unit and ligthing paraphernalia of new structure, technical problem to be solved are provided is to make it supply with best and stable interchange output or direct current output to the discharge lamp and the semiconductor light-emitting elements that connect as light source.
The object of the invention to solve the technical problems realizes by the following technical solutions.According to a kind of supply unit of the present invention's proposition, comprising: output produces mechanism, produces to exchange to export and direct current output; Light source generates the output that mechanism produced by described output and lights; Light source decision mechanism judges that described light source is discharge lamp or semiconductor light-emitting elements; And controlling organization, control according to the result of determination of described light source decision mechanism, produce and exchange output or direct current output to generate mechanism from described output.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid supply unit, wherein said output produces mechanism and has inverter circuit, this inverter circuit makes the 1st and the 2nd switching mechanism that comprises the switch portion that is connected in parallel to diode on field-effect transistor or the switch element constitute half-bridge, described controlling organization make described output produce mechanism the 1st and the 2nd switching mechanism the switch key element alternately open and close produce and exchange output, make the switch key element open and close of described the 1st switching mechanism, and the switch key element that makes described the 2nd switching mechanism is closed or use described the 2nd switching mechanism to carry out synchronously, produces direct current output thus.
Aforesaid supply unit, wherein said output produces mechanism and has inverter circuit, this inverter circuit makes the 1st to the 4th switching mechanism that comprises the switch portion that is connected in parallel to diode on field-effect transistor or the switch element constitute full-bridge, described controlling organization makes the switch key element of the group of the non-conterminous the 1st and the 4th switching mechanism that described full-bridge constitutes, with the switch key element of the group of the 2nd and the 3rd switching mechanism alternately open and close produce and exchange output, the switch key element of the 3rd switching mechanism in the 3rd and the 4th adjacent switching mechanism that described full-bridge constitutes is closed, and the switch key element of the 4th switching mechanism is opened, make the switch key element open and close of the 1st switching mechanism, and the switch key element that makes described the 2nd switching mechanism is closed or use described the 2nd switching mechanism to carry out synchronously, produces direct current output thus.
Aforesaid supply unit, light source is judged according to the filament resistance of described discharge lamp and the resistance value that is connected in the resistive element that is equivalent to described filament resistance of described semiconductor light-emitting elements by wherein said light source decision mechanism.
Aforesaid supply unit, wherein said light source decision mechanism during according to the startup of described discharge lamp and described semiconductor light-emitting elements voltage or the state of the rising of electric current judge light source.
Aforesaid supply unit, wherein said output produce mechanism and comprise: direct current is connected the outlet side of described inverter circuit by the impedance component of usefulness; And switch element, the generation that utilizes described output to produce the direct current output of mechanism makes described impedance component short circuit.
The object of the invention to solve the technical problems also realizes by the following technical solutions.According to a kind of ligthing paraphernalia of the present invention's proposition, comprising: described supply unit and appliance body with described supply unit.
The present invention compared with prior art has tangible advantage and beneficial effect.By above technical scheme as can be known, major technique of the present invention thes contents are as follows: output produces mechanism, produces to exchange output and direct current output; Light source generates the output that mechanism produced by described output and lights; Light source decision mechanism judges that described light source is discharge lamp or semiconductor light-emitting elements; And controlling organization, control according to the result of determination of described light source decision mechanism, produce and exchange output or direct current output to generate mechanism from described output, and the appliance body with described supply unit.
By technique scheme, supply unit of the present invention and ligthing paraphernalia have following advantage and beneficial effect at least: according to technical scheme 1 described invention of the present invention, if the judgement light source is a discharge lamp, can supply with the interchange output of best high frequency so to discharge lamp, on the other hand, if the judgement light source is a semiconductor light-emitting elements, can supply with best and stable direct current output to semiconductor light-emitting elements so.
According to technical scheme 2 described inventions of the present invention, can use the inverter circuit that constitutes half-bridge to produce mechanism as output, discharge lamp is produced best interchange output, semiconductor light-emitting elements is produced best and stable direct current output.
According to technical scheme 3 described inventions of the present invention, can use the inverter circuit that constitutes full-bridge to produce mechanism as output, discharge lamp is produced best interchange output, semiconductor light-emitting elements is produced best and stable direct current output.
According to technical scheme 4,5 described inventions of the present invention, can judge exactly that light source is discharge lamp or semiconductor light-emitting elements, and can supply with best interchange output discharge lamp, semiconductor light-emitting elements is supplied with best and stable direct current output.
According to technical scheme 6 described inventions of the present invention, the generation that produces the direct current output of mechanism by output makes direct current end the capacitor short-circuit of usefulness, can stably supply with the direct current output at semiconductor light-emitting elements thus.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of specification, and for above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.
Description of drawings
Fig. 1 is the stereogram of ligthing paraphernalia of using the supply unit of the 1st example of the present invention.
Fig. 2 is the figure that the summary of the supply unit of expression the 1st example constitutes.
Fig. 3 is the figure that the summary of employed dimming control part in expression the 1st example constitutes.
Fig. 4 is the flow chart that is used to illustrate the action of the 1st example.
Fig. 5 is the figure that the summary of the supply unit of expression the 2nd example of the present invention constitutes.
The figure of the voltage when Fig. 6 is the startup of expression discharge lamp of the 2nd example and LED illuminating lamp and the waveform of electric current.
Fig. 7 is the figure that the summary of the supply unit of expression the 3rd example of the present invention constitutes.
The figure of the voltage when Fig. 8 is the startup of the HID lamp of variation of expression the 3rd example and LED illuminating lamp and the waveform of electric current.
1: appliance body 1a: base station
2,3: discharge lamp 4: lampshade
10: AC power 11,36: full-wave rectifying circuit
12,24,25,27,29: capacitor 13: boost chopper circuit
14,23: inductor 15,221,222,223,224: field-effect transistor
16: fly-wheel diode 17: electrolytic capacitor
18,19: resistance 20: control circuit
21: output generation circuit 26: switch element
28: female connectors
28a, 28b, 28c, 28d, 31a, 31b, 31c, 31d, 33a, 33b, 33c, 33d: splicing ear
30: discharge lamp 31,33: public connector
32:LED illuminating lamp 34,35,39,381,411: resistive element
37:LED element 38: current detection circuit
40: dim signal generating unit 41: the electric power testing circuit
100: supply unit 201: the boost chopper circuit control part
202: light source detection unit 203: the output generation circuit control part
204: dimming control part 205: postpone control part
206: 231: the 1 ancillary coils of counter conduction time
Ancillary coil 301,302 in 232: the 2: filament
382,383: diode 2041: the reference signal generating unit
2042: comparator P: tie point
VL, VL1: modulating voltage IL, IL1: lamp current
Vf: forward voltage If: electric current
VP: pulse voltage Vcc: reference voltage
Embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, to the supply unit and the ligthing paraphernalia of foundation the present invention proposition
Its embodiment, structure, feature and effect thereof, describe in detail as after.
(the 1st example)
At first, the ligthing paraphernalia of using supply unit of the present invention is carried out simple declaration.
In Fig. 1,1 is appliance body, and this appliance body 1 has the base station 1a that is discoideus.And, on this base station 1a, disposing discharge lamp 2,3 with becoming concentric shape, and milky lampshade (shade) 4 is being installed in the mode that covers described discharge lamp 2,3 as the different ring-type of the diameter of light source., the discharge lamp 2,3 as light source is described, be that the LED element substitutes described discharge lamp 2,3 with the LED illuminating lamp as light source but also can dispose not shown semiconductor light-emitting elements on base station 1a herein.In appliance body 1 internal configurations supply unit 100 of the present invention is arranged.In addition, though not shown, reflecting plate, terminal and distribution etc. can certainly further be set.
Fig. 2 represents to be assembled in this way, and the summary of the supply unit of the present invention 100 of appliance body 1 inside of the ligthing paraphernalia of formation constitutes.
In Fig. 2 (a), 10 is AC power, and this AC power 10 is to be made of not shown source power supply.Be connected with the input terminal of full-wave rectifying circuit 11 on this AC power 10.Full-wave rectifying circuit 11 produces the alternating electromotive force from AC power 10 is carried out the formed output of full-wave rectification.Be connected with the capacitor 12 of the level and smooth usefulness of ripple (ripple) electric current between the lead-out terminal of the both positive and negative polarity of full-wave rectifying circuit 11.
The two ends of capacitor 12 are connected with boost chopper (chopper) circuit 13 as power sector.In this boost chopper circuit 13, be connected with between the lead-out terminal of the both positive and negative polarity of full-wave rectifying circuit 11 to constitute and boost, and field-effect transistor 15 is connected in parallel with electrolytic capacitor 17 as smoothing capacitor via afterflow (fly wheel) diode 16 of diagram polarity with the inductor 14 of transformer and as the series circuit of the field-effect transistor 15 of switch element.In addition, the two ends of electrolytic capacitor 17 are connected with the series circuit as the resistance 18,19 of voltage detection mechanism.Resistance 18,19 outputs according to electrolytic capacitor 17 produce dividing potential drop, and the terminal voltage of general's resistance 19 wherein exports control part 20 to.Field-effect transistor 15 carries out the open and close action according to the terminal voltage of the resistance in the control part 20 19 and the comparative result of pre-prepd reference voltage.The storage and the release of the electromagnetic energy of the open and close action of inductor 14 by following field-effect transistor 15, the outputs that electrolytic capacitor 17 is produced through boosting.About control part 20 with aftermentioned.
Boost chopper circuit 13 is connected with the output generation circuit 21 that produces mechanism as output.In this output generation circuit 21, described electrolytic capacitor 17 is connected in parallel with series circuit as the field-effect transistor 221,222 of the 1st and the 2nd field-effect transistor.In addition, the grid separately of field-effect transistor 221,222 is connected in control part 20, and by control part 20 controls.In the case, this output generation circuit 21 is according to carrying out two kinds of actions from the indication of control part 20, first kind of action is the inverter circuit that utilizes the field-effect transistor 221,222 through being connected in series to constitute as the so-called semi-bridge type that exchanges output mechanism, and the interchange output that produces high frequency by the open and close that replaces of described field-effect transistor 221,222.In addition, second kind of action is that the field-effect transistor 222 of the side in the field-effect transistor 221,222 is closed (in the case, field-effect transistor 222 by body diode (body diode) as fly-wheel diode to move), utilize the opposing party's field-effect transistor 221 to constitute the buck chopper device, and produce chopper output by the open and close of this field-effect transistor 221.In the case, also can constitute by making field-effect transistors 222 to carry out the synchronous buck chopper device that produces the synchronous rectification mode of direct current output.
In addition, in this output generation circuit 21, field-effect transistor 222 is connected in parallel with the series circuit of the impedor capacitor of using as the inductor 23 of ballast choke (ballast choke), capacitor 24 and as current cut-off 25.Capacitor 25 is connected in parallel with switch element 26.This switch element 26 is according to the indication of control part 20 and open and close, and carries out opening or the short circuit of direct current by the capacitor 25 of usefulness.
Herein, when this output generation circuit 21 moves as the inverter of semi-bridge type, the interchange output of the high frequency that produces with respect to the open and close that replaces, inductor 23 and capacitor 24 by field-effect transistor 221,222 as resonant circuit to move.In addition, when this output generation circuit 21 as the buck chopper device when moving, the storage and the release of the electromagnetic energy in the inductor 23 of the open and close by following field-effect transistor 221 produce the direct current output through step-down at capacitor 24 two ends.
The tie point of inductor 23 and capacitor 24 is via the 1st ancillary coil 231 of inductor 23, capacitor 27 and be connected with splicing ear 28a as the female connectors 28 of bindiny mechanism, in addition, inductor 23 is connected with the splicing ear 28b of female connectors 28 with the tie point of capacitor 24.The tie point of capacitor 24,25 is via the 2nd ancillary coil 232 of inductor 23, capacitor 29 and be connected with the splicing ear 28c of female connectors 28, and in addition, the tie point of capacitor 24,25 is connected with the splicing ear 28d of female connectors 28.The 1st ancillary coil 231 and the 2nd ancillary coil 232 carry out the preheating of the filament 301,302 of discharge lamps 30 such as fluorescent lamp described later.
On the other hand, shown in Fig. 2 (b), LED illuminating lamp 32 has splicing ear 33a, the 33b corresponding to the public connector 33 of splicing ear 28a, the 28b of female connectors 28 respectively, corresponding to splicing ear 33c, the 33d of the public connector 33 of splicing ear 28c, the 28d of female connectors 28.And, be connected with the resistive element 34 of the filament resistance that is equivalent to discharge lamp 30 between splicing ear 33a, the 33b, also be connected with the resistive element 35 of the filament resistance that is equivalent to discharge lamp 30 between splicing ear 33c, the 33d.In addition, be connected with the input terminal of the full-wave rectifying circuit 36 that comprises diode bridge between splicing ear 33b and the 33d.And, be connected with 1 LED element 37 or a plurality of between the lead-out terminal of the both positive and negative polarity of full-wave rectifying circuit 36 through LED coupled in series element 37 as semiconductor light-emitting elements.Herein, resistive element 34 (35) is the resistive element corresponding to the resistance value (filament resistance) of the filament 301 (302) of above-mentioned discharge lamp 30, and is set with the resistance value corresponding to the number of LED element 37.For example, when LED element 37 is 1, the resistance value of resistive element 34 is set at 4.7k Ω, when LED element 37 is 2, the resistance value of resistive element 34 is set at 10k Ω, when LED element 37 is 3, the resistance value of resistive element 34 is set at 47k Ω, when LED element 37 is 4, the resistance value of resistive element 34 is set at 100k Ω.
And this kind LED illuminating lamp 32 also is that public connector 33 is being connected under the state of female connectors 28, makes each splicing ear 33a～33d be connected to the splicing ear 28a～28d of female connectors 28.
In addition, when being installed in LED illuminating lamp 32 on the ligthing paraphernalia,, can omit full-wave rectifying circuit 36 so if will be connected in the formation that the closure of the public connector 33 of female connectors 28 is restricted to a direction in advance.
The splicing ear 28d of female connectors 28 and direct current are by the current detection circuit 38 that is connected in series with between the capacitor 25 of usefulness as load current testing agency.This current detection circuit 38 is to be made of the series circuit of the diode 383 of resistive element 381 and the diagram polarity parallel circuits of diode 382 with diagram polarity, its electric current of a direction that will flow into discharge lamp 30 (or LED illuminating lamp 32) as load current to detect.
The splicing ear 28c of female connectors 28 and an end are applied with reference voltage V cc, and (for example the other end for+15V) resistive element 39 is connected.At the tie point P of described resistive element 39, produce and be used to judge that light source is discharge lamp 30 or the resistive element 34 (resistive element 35) of the filament 302 of the discharge lamp 30 of LED illuminating lamp 32 or LED illuminating lamp 32 resistance value (filament resistance) corresponding output voltage VR separately with splicing ear 28c.This output voltage V R is input to control part 20.
The whole supply unit of control part 20 controls, it has boost chopper circuit control part 201, light source detection unit 202, output generation circuit control part 203, dimming control part 204.Described boost chopper circuit control part 201, light source detection unit 202, output generation circuit control part 203, dimming control part 204 are made of software.Certainly, also can constitute by hardware.Boost chopper circuit control part 201 is stored not shown reference voltage in advance, come the open and close action of controlling filed effect transistor 15 according to the comparative result of the terminal voltage of this reference voltage and resistance 19, and the storage and the release of the electromagnetic energy in the inductor 14 of the open and close action by following field-effect transistor 15 make electrolytic capacitor 17 two ends produce output voltage through boosting.
The output voltage V R that the tie point P of light source detection unit 202 by resistive element 39 and splicing ear 28c produced judges that light source is discharge lamp 30 or LED illuminating lamp 32.Particularly, when light source was discharge lamp 30, the resistance value of filament 302 was about 10 Ω, and the output voltage V R of tie point P is below the 1V.With respect to this, when light source is LED illuminating lamp 32, be that the resistance value of 1 and resistive element 34 (35) is under the situation of 4.7k Ω for example at LED element 37, output voltage V R reaches 1.4V, at LED element 37 is that the resistance value of 2 and resistive element 34 (35) is under the situation of 10k Ω, output voltage V R reaches 2.6V, at LED element 37 is that the resistance value of 3 and resistive element 34 (35) is under the situation of 47k Ω, output voltage V R reaches 7.5V, at LED element 37 is that the resistance value of 4 and resistive element 34 (35) is that output voltage V R reaches 10.2V under the situation of 100k Ω.Thus, in light source detection unit 202, preestablish bigger different critical value V1, V2 (wherein, V1＜V2), if VR is V1, judge that so light source is a discharge lamp 30, if V1＜VR V2, judge that so light source is a LED illuminating lamp 32, and then, if V2＜VR is judged to be the no-load condition that is not connected with light source so.
Output generation circuit control part 203 after dropping into power supply, at first make output generation circuit 21 as the inverter of semi-bridge type to move.In addition, if judge that according to the result of determination of light source detection unit 202 light source is a discharge lamp 30, the inverter action of output generation circuit 21 is continued,, so output generation circuit 21 is switched to the buck chopper device to move if judge that light source is a LED illuminating lamp 32.This output generation circuit control part 203 is when making output generation circuit 21 carry out the inverter action, field-effect transistor 221,222 is constituted the inverter circuit of semi-bridge type, and make field-effect transistor 221,222 alternately open and close and the interchange output that produces high frequency with the operating frequency of tens kHz～200kHz.In addition, make output generation circuit 21 as the buck chopper device when moving, the field-effect transistor 222 of a side in the field-effect transistor 221,222 is closed, the opposing party's field-effect transistor 221 is unlocked according to the control signal of being exported from dimming control part 204 closes to produce chopper output.In addition, if judge that by light source detection unit 202 light source is a LED illuminating lamp 32, this output generation circuit control part 203 is opened switch element 26 and is made direct current end capacitor 25 short circuits of usefulness so.
As shown in Figure 3, dimming control part 204 has reference signal generating unit 2041 and comparator 2042.Reference signal generating unit 2041 is connected with outside dim signal generating unit 40, and utilizes the dim signal of this dim signal generating unit 40 and generate the reference signal that the full luminous point lamp that is used for discharge lamp 30 (or LED illuminating lamp 32) and light modulation are lit a lamp.A terminal input of comparator 2042 has the reference signal that is generated by reference signal generating unit 2041, the input of another terminal has the load current that is detected by current detection circuit 38, and with their comparative result as exporting at the control signal of this output generation circuit control part 203.Thus, will be controlled in mode with respect to the electric current that the reference signal that is generated by reference signal generating unit 2041 flows into discharge lamp 30 (or LED illuminating lamp 32), and be carried out deciding Current Control near reference signal.
Secondly, the example that constitutes in this way according to flowchart text shown in Figure 4.
At first,, and enter into step 402, carry out the boost chopper action that utilizes boost chopper circuit 13 by the not shown electric power starting that mains switch caused of utilizing of step 401.In the case, if the alternating electromotive force of AC power 10 in full-wave rectifying circuit 11 by full-wave rectification, and be supplied to boost chopper circuit 13, so in the boost chopper circuit control part 201 of control part 20, make field-effect transistor 15 carry out the open and close action according to the comparative result of the terminal voltage of the resistance 19 of pre-prepd reference voltage and voltage detection mechanism.Thus, the storage and the release of the electromagnetic energy of the inductor 14 of the open and close action by following field-effect transistor 15 produce the output voltage through boosting in electrolytic capacitor 17 via fly-wheel diode 16.
Secondly, enter into step 403, at first carry out the inverter action.In this step 403, the output voltage of boost chopper circuit 13 is input to output generation circuit 21.In output generation circuit 21, field-effect transistor 221,222 is constituted the inverter circuit of semi-bridge type by the output generation circuit control part 203 of control part 20, utilize the drive signal of being imported from output generation circuit control part 203 to make field-effect transistor 221,222 open and close simultaneously, thereby between the drain-source electrode of field-effect transistor 222, produce high-frequency ac.
Under this state, in step 404, detect and filament resistance corresponding output voltage VR in order to judge light source.Then, enter into step 405, judge that according to output voltage V R light source is discharge lamp 30 or LED illuminating lamp 32.In the case, produce resistance value (filament resistance) corresponding output voltage VR with the resistive element 34 (resistive element 35) of the resistance value of the filament 302 of discharge lamp 30 or LED illuminating lamp 32 at the tie point P of resistive element 39 and splicing ear 28c, and this output voltage V R is input to the light source detection unit 202 of control part 20.
In light source detection unit 202, use predefined critical value V1, V2 to judge that light source is discharge lamp 30 or LED illuminating lamp 32.Now,, in step 405, become VR V1 so, thereby judge that light source is a discharge lamp 30 if supposition is connected with the discharge lamp 30 as light source.
In the case, the capacitor 25 that makes switch element 26 carry out breakdown action in step 407 and make direct current end usefulness is opened.This action is to carry out when the inverter action of step 403, in step 407, repeats identical action.
Secondly, enter into step 408, the inverter action described in the step 403 is continued.In the case, output generation circuit 21 is also kept inverter circuit by field-effect transistor 221,222 semi-bridge types that constituted by the output generation circuit control part 203 of control part 20, and utilizes the drive signal of being imported from output generation circuit control part 203 to make field-effect transistor 221,222 open and close produce high-frequency ac output.
The high-frequency ac output of being exported from output generation circuit 21 is supplied to inductor 23 and resonance with capacitor 24, and make described inductor 23 and capacitor 24 as resonant circuit to move.Under this state, if preheat curent flows into the filament 301,302 of discharge lamp 30 from the 1st ancillary coil 231 and the 2nd ancillary coil 232, the starting resistor with regulation puts between the filament 301 and 302 of discharge lamp 30 so, thereby lights this discharge lamp 30.
Secondly, in step 409, the electric current that utilizes current detection circuit 38 will flow into discharge lamp 30 detects as load current.Then, if in step 410, be No (keeping electric power starting), in step 411, carry out so and decide Current Control.In the case, corresponding to the reference signal that is generated according to the dim signal of dim signal generating unit 40 and by the reference signal generating unit 2041 of dimming control part 204, be input in the output generation circuit control part 203 with the control signal of the comparative result of the lamp current that is detected by current detection circuit 26.Thus, output generation circuit control part 203 utilizes and makes field-effect transistor 221,222 open and close of output generation circuit 21 produce high-frequency ac from the corresponding operating frequency of the control signal of dimming control part 204, thereby lights this discharge lamp 30.In the case, the control signal that inputs to output generation circuit control part 203 from dimming control part 204 is the control signal corresponding to the comparative result of reference signal and lamp current, owing to carry out FEEDBACK CONTROL, therefore so that the lamp current of discharge lamp 30 often carries out deciding Current Control (step 411) near the mode of reference signal.
Under this state, if utilize the dim signal of dim signal generating unit 40 to make the reference signal that is generated by reference signal generating unit 2041 variable, the control signal of being exported from dimming control part 204 changes so, and discharge lamp 30 is in the control that is subjected to lighting a lamp to the scope of light modulation of full light.In the case, output generation circuit 21 is used to make field-effect transistor 221,222 carry out the open and close action from the operating frequency of the duty ratio of the drive signal of output generation circuit control part 203 (duty ratio) 50%, if but from this state, reference signal changes because of the dim signal of dim signal generating unit 40, thereby cause changing from the control signal that dimming control part 204 is exported, so corresponding to the variation of this moment, change from the operating frequency of the duty ratio 50% of the drive signal of output generation circuit control part 203.Thus, the interchange output that is supplied to discharge lamp 30 is controlled, and the state of lighting a lamp of discharge lamp 30 is controlled to the scope of light modulation at full light corresponding to the dim signal of dim signal generating unit 40.
Thereafter, in step 410, if be judged as Yes by power-off, the high-frequency ac of output generation circuit 21 stops so, and discharge lamp 30 is turned off the light.
On the other hand, under situation about being connected with, in step 405, become V1＜VR V2, judge that light source is a LED illuminating lamp 32 as the LED illuminating lamp 32 of light source.So in step 413, switch element 26 carries out closing motion and makes direct current end capacitor 25 short circuits of usefulness.
Secondly, enter into step 414, switch to the chopper action that is used to light LED illuminating lamp 32.In the case, in step 414, the output voltage of boost chopper circuit 13 is input in the output generation circuit 21.In output generation circuit 21, output generation circuit control part 203 by control part 20, the field-effect transistor 222 of a side in the field-effect transistor 221,222 is closed, and the field-effect transistor 221 that makes the opposing party is according to the control signal of exporting from dimming control part 204 and open and close.Thus, the storage and the release of the electromagnetic energy of the inductor 23 of the open and close action by following field-effect transistor 221 produce the output voltage (direct current output) through step-down at capacitor 24 two ends, utilize this output voltage to light LED illuminating lamp 32.
Secondly, in step 409, utilize current detection circuit 38 and the electric current that will flow into LED illuminating lamp 32 as load current to detect.Then, if in step 410, be No (keeping electric power starting), in step 411, carry out so and decide Current Control.In the case, corresponding to the reference signal that is generated according to the dim signal of dim signal generating unit 40 and by the reference signal generating unit 2041 of dimming control part 204, also be input in the output generation circuit control part 203 with the control signal of the comparative result of the lamp current that is detected by current detection circuit 26.Thus, output generation circuit control part 203 is corresponding to from the control signal of dimming control part 204 and make field-effect transistor 221,222 open and close of output generation circuit 21, the storage and the release of the electromagnetic energy of the inductor 23 of the open and close action by following this field-effect transistor 221, in the direct current output of capacitor 24 two ends generation, thereby light LED illuminating lamp 32 through step-down.
In the case, the control signal that inputs to output generation circuit control part 203 from dimming control part 204 also is the control signal corresponding to the comparative result of reference signal and lamp current, owing to carry out FEEDBACK CONTROL, therefore so that the lamp current of LED illuminating lamp 32 often carries out deciding Current Control (step 411) near the mode of reference signal.
In addition, under this state, if utilize the dim signal of dim signal generating unit 40 to make the reference signal that is generated by reference signal generating unit 2041 variable, the control signal of being exported from dimming control part 204 also changes so, and LED illuminating lamp 32 is in the control that is subjected to lighting a lamp to the scope of light modulation of full light.In the case, this output generation circuit 21 makes field-effect transistor 221,222 carry out the open and close action with the duty ratio of the regulation imported from output generation circuit control part 203, if but from this state, reference signal changes because of the dim signal of dim signal generating unit 40, thereby cause changing from the control signal that dimming control part 204 is exported, change corresponding to this so, the duty ratio of being imported from output generation circuit control part 203 changes.Thus, the direct current output that is supplied to LED illuminating lamp 32 is controlled, and the state of lighting a lamp of LED illuminating lamp 32 is controlled to the scope of light modulation at full light corresponding to the dim signal of dim signal generating unit 40.
Thereafter, in step 410, if be judged as Yes by power-off, the output of the direct current of this output generation circuit 21 stops so, and LED illuminating lamp 32 is turned off the light.
And then, when in step 405, being judged as V2＜VR, be judged as the no-load condition that is not connected with light source, in step 406, stop the output of supply unit.
Therefore, if so operation, so by light source detection unit 202, the output voltage V R that obtains according to resistance value corresponding to resistive element 34 (35) set in the resistance value of the filament 302 of discharge lamp 30 and the LED illuminating lamp 32, judge that light source is discharge lamp 30 or LED illuminating lamp 32, according to this result of determination, if judge that light source is a discharge lamp 30, make the field-effect transistor 221 of this output generation circuit 21 so, 222 constitute the inverter circuit of semi-bridge type, and by utilizing described field-effect transistor 221,222 the open and close that replaces and the interchange of the high frequency that produces are exported and are lighted this discharge lamp 30, in addition, if judge that light source is a LED illuminating lamp 32, make field-effect transistor 221 by output generation circuit 21 so, the field-effect transistor 222 of a side in 222 is closed, utilize the opposing party's field-effect transistor 221 to constitute the buck chopper devices, and export by the direct current that the open and close that utilizes this field-effect transistor 221 produces and to light LED illuminating lamp 32.Thus, can supply with the interchange output of best high frequency to discharge lamp 30, and also can supply with best and stable direct current output to LED illuminating lamp 32, therefore the diode-bridge circuit that is assembled into LED illuminating lamp inside with previous utilization converts alternating electromotive force to direct current power and lights the LED illuminating lamp of LED element and compare, and can obtain not produce in the LED element the stable action of lighting a lamp of flicker etc.
In addition, in LED illuminating lamp 32,1 full-wave rectifying circuit 36 that comprises diode bridge only is set, and (this full-wave rectifying circuit 36 is if when being installed on the appliance body 1 of LED illuminating lamp 32, the formation that has been determined in advance with respect to the polar orientation of supply unit, can omit so), compare with the LED illuminating lamp that the previous circuit that is assembled into complexity such as a plurality of diode-bridge circuits in LED illuminating lamp inside constitutes, also can be more cheap on the price, the economy when a plurality of this kind LED illuminating lamp is set also can be more favourable.
In addition, in above-mentioned, the capacitor 25 of direct current by usefulness is connected in series between capacitor 24 and the field-effect transistor 222, but also it can be connected in series between inductor 23 and the field-effect transistor 221, in addition, also it can be connected in series in respectively between capacitor 24 and the field-effect transistor 222 and inductor 23 and field-effect transistor 221 between.In the case, described capacitor and switch element are connected in parallel, when judging that light source is LED illuminating lamp 32, and the also breakdown action of the switch element of the indication by utilizing control part 20 and short circuit.
In addition, in above-mentioned, described and utilized field-effect transistor 221,222 to constitute the example of the inverter circuit of semi-bridge type, but also can use other switch elements to replace described field-effect transistor 221,222.In the case, as long as the switch element that makes a side who is equivalent to field-effect transistor 222 is made of the switch portion of the diode that is connected in parallel, and can obtains the action identical and get final product with field-effect transistor 222.
(variation)
In above-mentioned the 1st example, carry out the full luminous point lamp and the light modulation of discharge lamp 30 (or LED illuminating lamp 32) lights a lamp according to the reference signal that dim signal generated of utilizing outside dim signal generator 40, but when light source is LED illuminating lamp 32, if import dim signal for light modulation is lit a lamp, the rising of Ci Shi dim signal is slower so, therefore the LED element 37 of LED illuminating lamp 32 is only lighted the situation that existence can't begin to light from desired lightness in a flash brightly sometimes.
Therefore, in this variation,, also can obtain stable light modulation and light a lamp even be under the situation of LED illuminating lamp 32 at light source.In the case, as shown in Figure 2, in control part 20 and then be provided with and postpone control part 205.If from dimming control part 204 output control signals, this postpones control part 205 and has only postponed the stipulated time so, and output generation circuit control part 203 is moved.
Other are identical with Fig. 2.
If so operation, so when judging that light source is LED illuminating lamp 32, begin through after the certain hour from the output of control signal, brightness adjustment control based on control signal becomes effective, and carry out the light modulation of LED illuminating lamp 32, therefore the undesirable lightness (only lighting brightly in a flash) the during startup in the LED illuminating lamp 32 disappears, and can begin to carry out light modulation from desired lightness and light a lamp.
But, if from dimming control part 204 output control signals, and judge that by light source detection unit 202 light sources are LED illuminating lamp 32, after the delay control part 205 of this variation has postponed the stipulated time so output generation circuit control part 203 is moved, if but for example integrating circuit is set at the control signal of being exported from dimming control part 204, control signal is gently increased, the what is called that so also can make the lightness of LED illuminating lamp 32 gently rise to desired lightness fade in (fade in).
(the 2nd example)
In the 1st example, when judging that light source is discharge lamp 30 or LED illuminating lamp 32, the resistance value corresponding output voltage VR of set resistive element 34 (35) in the resistance value of the filament 302 of detection and discharge lamp 30 and the LED illuminating lamp 32, but in the 2nd example, the voltage when being conceived to the startup of discharge lamp 30 and LED illuminating lamp 32 or the different this point of propradation of electric current are judged light source.
The summary that Fig. 5 (a) (b) represents the 2nd example of the present invention constitutes, to the part mark identical symbol identical with Fig. 2.In the case, in the LED illuminating lamp 32 shown in Fig. 5 (b), short circuit respectively between the splicing ear 33a and 33b of female connectors 33, between splicing ear 33c and the 33d.In addition, in Fig. 5 (a), the field-effect transistor 221,222 and the electric power testing circuit 41 of this output generation circuit 21 are connected in series.This electric power testing circuit 41 has the resistive element 411 that is connected in series with field-effect transistor 221,222, and the voltage that produced in this resistive element 411 load electric as discharge lamp 30 (or LED illuminating lamp 32) is detected.In addition, the light source detection unit of control part 20 202 during according to the startup of the discharge lamp 30 that is detected by electric power testing circuit 41 and LED illuminating lamp 32 voltage and the state of electric current, judge that light source is discharge lamp 30 or LED illuminating lamp 32.In the case, modulating voltage VL during the startup of discharge lamp 30 is by the inverter action of field-effect transistor 221,222, shown in Fig. 6 (a), becomes certain size between the preheating elementary period, after further becoming greatly before the discharge beginning, maintain certain voltage along with the discharge beginning.In addition, lamp current IL is not flowing between the preheating elementary period shown in Fig. 6 (b), along with the discharge of discharge lamp 30 begins and begins to flow.With respect to this, modulating voltage during the startup of LED illuminating lamp 32 is shown in Fig. 6 (c), and the forward voltage Vf by LED element 37 after the inverter action of field-effect transistor 221,222 comes clamp (clamped), simultaneously, shown in Fig. 6 (d), the electric current I f of a direction begins to flow.Thus, in light source detection unit 202, by forward voltage Vf come the modulating voltage (than the startup of discharge lamp 30 Fig. 6 (a) shown in time modulating voltage VL little) of clamp as shown in Fig. 6 (c) if detect after starting from the output voltage of electric power testing circuit 41, judge that so light source is a LED illuminating lamp 32, in addition, if the modulating voltage VL of the discharge lamp 30 when the output voltage of electric power testing circuit 41 detects than the startup shown in the big a lot Fig. 6 (a) of forward voltage Vf judges that so light source is a discharge lamp 30.
If judge that according to the judged result of light source detection unit 202 light source is a discharge lamp 30, this output generation circuit control part 203 makes field-effect transistor 221 so, 222 constitute the inverter circuit of semi-bridge type, make field-effect transistor 221, the 222 alternately open and close interchange outputs that produce high frequency, in addition, if judge that by light source detection unit 202 light source is a LED illuminating lamp 32, this output generation circuit control part 203 makes field-effect transistor 221 so, the field-effect transistor 222 of a side in 222 is closed, and the chopper of field-effect transistor 221 open and close by making the opposing party moves and produces direct current output.
Thus, below can obtain and the identical action of above-mentioned the 1st example, and can obtain identical effect.In addition, according to this 2nd example, together be provided with current detection circuit 38 with electric power testing circuit 41, therefore for example when light source is LED illuminating lamp 32, can come LED illuminating lamp 32 is carried out deciding Current Control according to the comparative result of the load current that is detected by current detection circuit 38 with the reference signal that is generated by reference signal generating unit 2041, in addition, when light source is discharge lamp 30, also can come discharge lamp 30 is carried out deciding electric power control according to the comparative result of the load electric that is detected by electric power testing circuit 41 with the reference signal that is generated by reference signal generating unit 2041.
In addition, in above-mentioned example, the judgement of the light source in the light source detection unit 202 is that the state according to the output voltage of the electric power testing circuit 41 after starting carries out, for example, also can according to the detection of current detection circuit 38 export start as surveying shown in Fig. 6 (d) after the flowing of electric current I f of a direction, judge that thus light source is a LED illuminating lamp 32, in other cases, judge that light source is a discharge lamp 30.
(variation)
In above-mentioned the 2nd example, described the situation that discharge lamp 30 and LED illuminating lamp 32 are respectively 1, but existence a plurality of discharge lamps of use or LED illuminating lamp are as the situation of light source.In the case, as long as a plurality of light sources all only be discharge lamp or only be just no problem of LED illuminating lamp, for example in a plurality of discharge lamps, connect 1 LED illuminating lamp or among a plurality of LED illuminating lamps, connect mixing year of 1 so-called light source such as discharge lamp on the contrary but produce sometimes.In this variation, judge mix carrying of this kind light source and stop the output of supply unit forcibly.
In the case, in the light source detection unit 202 of control part 20, output voltage (load electric) peak value in the time of will be corresponding to the lighting a lamp of the series connection number of a plurality of discharge lamps 30 through being connected in series is set at the 1st fiducial value, and the output voltage (direct voltage) in the time of will be corresponding to the lighting a lamp of a plurality of series connection numbers through LED coupled in series illuminating lamp 32 is set at the 2nd fiducial value.Output voltage (load electric) when being the lighting a lamp of discharge lamp 30 of the 1st fiducial value as the output voltage (direct voltage) in the lighting a lamp of the LED illuminating lamp 32 of the 2nd fiducial value herein, is below the peak value.
If so set, so by light source detection unit 202, the output voltage that is produced in the resistive element 411 of electric power testing circuit 41 is under the situation more than the 1st fiducial value, to be judged to be and to be connected with a plurality of discharge lamps 30.In addition, the output voltage that is produced in the resistive element 411 of electric power testing circuit 41 is under the situation below the 1st fiducial value, to be judged to be and to be connected with LED illuminating lamp 32, and then, use the 2nd fiducial value to judge and mix the possibility of carrying.In the case, if the output voltage that is produced in the resistive element 411 surpasses the 2nd fiducial value, be judged to be so to exist to mix and carry.Certainly, if the output voltage that is produced in the resistive element 411 is the 2nd fiducial value, is judged to be so and is connected with a plurality of LED illuminating lamps 32.And, carry if in light source detection unit 202, be judged to be to exist to mix, stop the output of supply unit so immediately.Thus, mistake is installed the LED illuminating lamp even exist with respect to a plurality of discharge lamps or with respect to a plurality of LED illuminating lamps and the situation that mistake is installed discharge lamp, can judge exactly that also mixing of described light source carry, and can suitably stop the output of supply unit.
In above-mentioned, described a plurality of through being connected in series discharge lamp 30 and the situation of LED illuminating lamp 32, but a plurality of discharge lamp 30 and situation of LED illuminating lamp 32 through being connected in parallel is also same as described above, can judge exactly that mixing of light source carry.
In addition, in light source detection unit 202, also can detect the direct voltage composition of the output voltage that is produced in the resistive element 411 of this electric power testing circuit 41, judge thus and mix the possibility of carrying according to judging that light source is the state of discharge lamp 30.In the case, in light source detection unit 202, prepared the direct voltage composition detection function of output voltage, if the direct voltage composition of the output voltage that is produced in the resistive element 411 is more than the ormal weight, judge to mix being loaded with discharge lamp and stopping with the LED illuminating lamp exporting so.In the case, when the output voltage that is produced in the resistive element 411 only is the direct voltage composition, judge to be connected with a plurality of LED illuminating lamps.
(the 3rd example)
In the 1st and the 2nd example, described the example that uses the inverter circuit of semi-bridge type, but in the 3rd example, used the inverter circuit of bridge-type.
Fig. 7 represents that the summary of the 3rd example constitutes, to the part mark identical symbol identical with Fig. 2.
In the case, the LED illuminating lamp shown in Fig. 7 (b) 32 constitutes with Fig. 2 (b) identically.In addition, in the output generation circuit 21 shown in Fig. 7 (a), electrolytic capacitor 17 and series circuit as the field-effect transistor 221,222 of the 1st and the 2nd field-effect transistor, and be connected in parallel as the series circuit of the field-effect transistor 223,224 of the 3rd and the 4th field-effect transistor.In addition, field-effect transistor 221～224 grid separately is connected in control part 20, and by control part 20 controls.
In addition, this output generation circuit 21 is according to carrying out two kinds of actions from the indication of control part 20, first kind of action is to utilize field-effect transistor 221～224, constitute inverter circuit, and make non-conterminous field-effect transistor that described full-bridge constitutes in groups, herein as the so-called bridge-type that exchanges output mechanism, make field-effect transistor 221 and 224 in groups, make field-effect transistor 222 and 223 in groups, and make the described alternately open and close of respectively organizing, produce the interchange output of high frequency thus.In addition, second kind of action is to make the adjacent field-effect transistor of full-bridge formation in groups, herein, make field-effect transistor 221 and 222 in groups, make field-effect transistor 223 and 224 in groups, close the field-effect transistor 223 in a group and open field-effect transistor 224, and the field-effect transistor 222 of closing the side in the field-effect transistor 221 and 222 of another group (in the case, field-effect transistor 222 by body diode as fly-wheel diode to move), and utilize the opposing party's field effect transistor element 221 to constitute the buck chopper device, the open and close by this field-effect transistor 221 produces chopper output.In the case, also can constitute by making field-effect transistors 222 to carry out the synchronous buck chopper device that produces the synchronous rectification mode of direct current output.
This output generation circuit 21 is connected with inductor 23, capacitor 24 and direct current as the ballast choke by the series circuit of the capacitor 25 of usefulness between the tie point of the tie point of field- effect transistor 221 and 222 and field-effect transistor 223 and 224.Capacitor 25 is connected in parallel with switch element 26.This switch element 26 is according to the indication of control part 20 and open and close, and carries out opening, the short circuit of capacitor 25.
In the case, the inverter that constitutes as full-bridge when output generation circuit 21 is when moving, with respect to the output that exchanges of the high frequency that open and close produced that replaces by field-effect transistor 221 and 224 group and field-effect transistor 222 and 223 group, inductor 23 and capacitor 24 also as resonant circuit to move.In addition, when output generation circuit 21 as the buck chopper device when moving, the storage and the release of the electromagnetic energy in the inductor 23 of the open and close by following field-effect transistor 221 produce the direct current output through step-down at capacitor 24 two ends.
Other formations are identical with Fig. 2 (b).
This output generation circuit control part 203 is after dropping into power supply, output generation circuit 21 is moved as inverter, if judge that according to the result of determination of light source detection unit 202 light source is a discharge lamp 30, the inverter action of output generation circuit 21 is continued.In addition, be LED illuminating lamp 32 if judge light source, so this output generation circuit control part 203 make this output generation circuit 21 as the buck chopper device to move.
In the case, when making output generation circuit 21 carry out the inverter action by output generation circuit control part 203, make non-conterminous switch element that full-bridge constitutes in groups, herein, make field-effect transistor 221 and 224 in groups, make field-effect transistor 222 and 223 in groups, and make the described alternately open and close of respectively organizing, produce the interchange output of high frequency thus.In addition, when this output generation circuit 21 being moved as the buck chopper device by this output generation circuit control part 203, make adjacent field-effect transistor that full-bridge constitutes in groups, herein, make field- effect transistor 221 and 222 in groups, make field-effect transistor 223 and 224 in groups, close the field-effect transistor 223 in a group and open field-effect transistor 224, close the field-effect transistor 222 of the side in the field- effect transistor 221 and 222 of another group, and the open and close of the field effect transistor element 221 by the opposing party produces chopper output.
Other actions are identical with Fig. 2.
Therefore, even so set, also can obtain the effect identical with the 1st example.
In addition, according to this 3rd example, together be provided with electric power testing circuit 41 with current detection circuit 38, therefore for example when light source is LED illuminating lamp 32, can come LED illuminating lamp 32 is carried out deciding Current Control according to the comparative result of the load current that is detected by current detection circuit 38 with the reference signal that is generated by reference signal generating unit 2041, in addition, when light source is discharge lamp 30, also can come discharge lamp 30 is carried out deciding electric power control according to the comparative result of the load electric that is detected by electric power testing circuit 41 with the reference signal that is generated by reference signal generating unit 2041.
In addition, in above-mentioned, described and utilized field-effect transistor 221～224 to constitute the example of the inverter circuit of bridge-type, but also can use other switch elements to replace described field-effect transistor 221～224.In the case, as long as the switch element that is equivalent to field-effect transistor 222 is made of the switch portion of the diode that is connected in parallel, and can obtains the action identical and get final product with field-effect transistor 222.
(variation)
In the 3rd example, general discharge lamp 30 is described, but also can be applied to high-pressure discharge lamp (HID lamp) by combined spot firearm etc.In the case, in the light source detection unit 202 of control part 20, the state of the electric current during according to the startup of HID lamp that is detected by current detection circuit 38 and LED illuminating lamp judges that light source still is the LED illuminating lamp for the HID lamp.Promptly, modulating voltage VL1 during the startup of HID lamp becomes certain size by the inverter action of this output generation circuit 21 as shown in Fig. 8 (a), at the appointed time, apply pulse voltage Vp by the high pressure that action produced of igniter etc., along with the discharge that applies caused HID lamp by the pulse voltage Vp of this high pressure begins, the lamp current IL1 shown in Fig. 8 (b) begins to flow.With respect to this, along with the startup of LED illuminating lamp, shown in Fig. 8 (c), electric current I f begins to flow.Thus, in light source detection unit 202, survey the electric current I f that begins to flow after the startup according to the output of current detection circuit 38, judge that thus light source is the LED illuminating lamp, in addition, survey according to the output of current detection circuit 38 and to start the lamp current IL1 shown in Fig. 8 (b) that back delay stipulated time (discharge of HID lamp begins the back) begins to flow, judge that thus light source is the HID lamp.
Even so operation also can obtain the effect identical with the 3rd example.
(the 4th example)
In addition, in the supply unit of discharge lamp special use formerly, supply unit with following initial illumination degree correcting function, promptly, because of the process of conduction time of discharge lamp causes lightness to descend with the lamp deterioration, therefore by arbitrary method to counting the conduction time of discharge lamp, and make for the supply capability of discharge lamp in the mode that the lightness that comes compensate for lamp according to this count results descends variable, thereby begin till the end of lifetime lightness of lamp is kept certain from the use of discharge lamp.The unnecessary electric power of this kind initial illumination degree correcting function when the use of blocking discharge lamp begins supply with and energy consumption suppressed till the end of lifetime of lamp aspect effective.
This 4th example is the additional example that this kind initial illumination degree correcting function is arranged, and further is provided with counter 206 conduction time in control part shown in Figure 2 20.When light source detection unit 202 judged that light source is discharge lamp 30, counted the conduction time of 206 pairs of discharge lamps 30 of this counter conduction time.In addition, if remove discharge lamp 30 from utensil, (reset) counter conduction time 206 of resetting so, in addition, if reinstall discharge lamp 30, so from beginning counting at first.
And, corresponding to counter 206 count value conduction time, the interchange output that utilizes the inverter action of this output generation circuit 21 to be supplied with adjustment for discharge lamp 30.In the case, the life-span of discharge lamp 30 is about 12000 hours, along with effluxion, the beam of light descends gradually, but the electrical force profiles of using expression light beam at this moment to change, according to this electrical force profiles, in the lightness of discharge lamp 30 is used between elementary period fully, dwindle the interchange output that is supplied to discharge lamp 30 from output generation circuit 21, in during the end of lifetime that the lightness of discharge lamp 30 descends, increase the interchange output that is supplied to discharge lamp 30 from this output generation circuit 21 at effluxion.
If so operation, so when judging that light source is discharge lamp 30, utilize the conduction time counter 206 to come to counting the conduction time of discharge lamp 30, and will be adjusted into the best from the interchange output that output generation circuit 21 is supplied to discharge lamp 30 corresponding to this count value, therefore can begin the lightness of lamp to be kept certain to end of lifetime from the use of discharge lamp 30.
In addition, in above-mentioned, described the situation of only discharge lamp 30 being carried out the revisal of initial illumination degree, but equally also can carry out the revisal of initial illumination degree LED illuminating lamp 32.In the case, be provided with above-mentioned conduction time counter 206 other counter conduction time to counting the conduction time of LED illuminating lamp 32 is arranged.In addition, the life-span of the LED element 37 of LED illuminating lamp 32 is about 40000 hours, as long as the electrical force profiles that the light beam that uses expression to descend along with effluxion changes is adjusted the direct current output of being supplied with from 21 pairs of LED illuminating lamps 32 of this output generation circuit according to this electrical force profiles and is got final product.
In addition, the present invention is not limited to described example, the implementation phase in, can in the scope that does not change its purport, carry out various distortion.For example, in above-mentioned example, automatically carry out the judgement that light source is discharge lamp or LED illuminating lamp, but also can use diverter switch manually to move.In the case, diverter switch is arranged on the appliance body 1 described in Fig. 1, and by manual it is switched to corresponding position according to the discharge lamp or the LED illuminating lamp that are installed in the appliance body 1.In addition, in above-mentioned example, the example that can light as the supply unit of the usefulness of lighting a lamp commonly used of the discharge lamp of light source or LED illuminating lamp has been described, but for example also can be as the supply unit of the non-common usefulness of lighting a lamp.In the case, earlier storage battery is built in the supply unit, when the AC power 10 of source power supply has a power failure, power supply is switched to storage battery from AC power 10, this electric power storage bubble is come drive electric power unit as power supply, thereby light discharge lamp or LED illuminating lamp.
And then, comprise the invention in various stages in the described example, can pass through the suitable combination of a plurality of constitutive requirements of being disclosed and extract various inventions.For example, even when from all constitutive requirements shown in the example, removing several constitutive requirements, also can solve the problem described in problem one hurdle of inventing institute's desire solution, and during the effect described in effect one hurdle that can obtain to invent, the formation of having removed these constitutive requirements can be extracted as invention.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (7)
1. supply unit is characterized in that comprising:
Output produces mechanism, produces to exchange output and direct current output;
Light source generates the output that mechanism produced by described output and lights;
Light source decision mechanism judges that described light source is discharge lamp or semiconductor light-emitting elements; And
Controlling organization is controlled according to the result of determination of described light source decision mechanism, produces and exchanges output or direct current output to generate mechanism from described output.
2. supply unit according to claim 1 is characterized in that:
Described output produces mechanism and has inverter circuit, this inverter circuit makes the 1st and the 2nd switching mechanism that comprises the switch portion that is connected in parallel to diode on field-effect transistor or the switch element constitute half-bridge, described controlling organization make described output produce mechanism the 1st and the 2nd switching mechanism the switch key element alternately open and close produce and exchange output, make the switch key element open and close of described the 1st switching mechanism, and the switch key element that makes described the 2nd switching mechanism is closed or use described the 2nd switching mechanism to carry out synchronously, produces direct current output thus.
3. supply unit according to claim 1 is characterized in that:
Described output produces mechanism and has inverter circuit, this inverter circuit makes the 1st to the 4th switching mechanism that comprises the switch portion that is connected in parallel to diode on field-effect transistor or the switch element constitute full-bridge, described controlling organization makes the switch key element of the group of the non-conterminous the 1st and the 4th switching mechanism that described full-bridge constitutes, with the switch key element of the group of the 2nd and the 3rd switching mechanism alternately open and close produce and exchange output, the switch key element of the 3rd switching mechanism in the 3rd and the 4th adjacent switching mechanism that described full-bridge constitutes is closed, and the switch key element of the 4th switching mechanism is opened, make the switch key element open and close of the 1st switching mechanism, and the switch key element that makes described the 2nd switching mechanism is closed or use described the 2nd switching mechanism to carry out synchronously, produces direct current output thus.
4. according to the described supply unit of arbitrary claim in the claim 1 to 3, it is characterized in that:
Light source is judged according to the filament resistance of described discharge lamp and the resistance value that is connected in the resistive element that is equivalent to described filament resistance of described semiconductor light-emitting elements by described light source decision mechanism.
5. according to the described supply unit of arbitrary claim in the claim 1 to 3, it is characterized in that:
Described light source decision mechanism during according to the startup of described discharge lamp and described semiconductor light-emitting elements voltage or the state of the rising of electric current judge light source.
6. according to claim 2 or 3 described supply units, it is characterized in that:
Described output produces mechanism and comprises: direct current is connected the outlet side of described inverter circuit by the impedance component of usefulness; And switch element, the generation that utilizes described output to produce the direct current output of mechanism makes described impedance component short circuit.
7. ligthing paraphernalia is characterized in that comprising: according to claim 1 or 3 described supply units and appliance body with described supply unit.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009180856A JP2011034847A (en) | 2009-08-03 | 2009-08-03 | Power supply device and lighting fixture |
| JP2009-180856 | 2009-08-03 |
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| CN101990341A true CN101990341A (en) | 2011-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010102424594A Pending CN101990341A (en) | 2009-08-03 | 2010-07-29 | Electric power device, and lighting fixture |
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| JP (1) | JP2011034847A (en) |
| CN (1) | CN101990341A (en) |
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| CN111066376A (en) * | 2017-09-16 | 2020-04-24 | 凤凰电机公司 | Light source device, exposure device, and method for determining light source device |
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| JP5541934B2 (en) * | 2009-09-25 | 2014-07-09 | パナソニック株式会社 | Driving device for lighting circuit and lighting device |
| JP2012009348A (en) * | 2010-06-25 | 2012-01-12 | Panasonic Electric Works Co Ltd | Luminaire-lighting device and luminaire |
| JP5945846B2 (en) * | 2012-04-03 | 2016-07-05 | パナソニックＩｐマネジメント株式会社 | Lighting device |
| JP6007680B2 (en) | 2012-08-31 | 2016-10-12 | 株式会社リコー | Lighting control circuit, illumination lamp using the lighting control circuit, and control method of the lighting control circuit |
| DE102013011821A1 (en) * | 2013-07-15 | 2015-01-15 | Cooper Crouse-Hinds Gmbh | lighting device |
| FR3013178B1 (en) | 2013-11-12 | 2016-01-08 | Schneider Electric Ind Sas | POWER SUPPLY SYSTEM OF ONE OR MORE LIGHT EMITTING DIODE LIGHTING MODULES, ASSOCIATED LIGHTING ASSEMBLY AND POWER SUPPLY METHOD THEREOF |
| JP6179648B2 (en) * | 2016-09-07 | 2017-08-16 | 株式会社リコー | Lighting control circuit and illumination lamp using the lighting control circuit |
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| CN111066376B (en) * | 2017-09-16 | 2022-12-23 | 凤凰电机公司 | Light source device, exposure device, and method for determining light source device |
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| JP2011034847A (en) | 2011-02-17 |
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Application publication date: 20110323 |