CN102413604B - Led lighter and lighting device using the led lighter - Google Patents
Led lighter and lighting device using the led lighter Download PDFInfo
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- CN102413604B CN102413604B CN201110214232.3A CN201110214232A CN102413604B CN 102413604 B CN102413604 B CN 102413604B CN 201110214232 A CN201110214232 A CN 201110214232A CN 102413604 B CN102413604 B CN 102413604B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The invention relates to an LED lighter and a lighting device using the LED lighter. The invention relates to an LED lighter. Dimming control is realized according to the lighter time of an LED light. And under a condition that wire breaks in the LED light, the lighter time resets automatically. Thus, when the LED light is taken off, the lighter time is not reset. A time sequence control part (8) makes stop period time increase gradually. After a counting of two times of the stop period time, broken wire is determined to occur in the LED light (110). Therefore, the lighter time of a lighter time counting part (9) and a lighter time stored in a storage part (10) are reset to zero. Thus, when faults such as broken wires appear in the LED LIGHT (110), the lighter time of the LED light (110) is reset to zero, thereby avoiding the lighter time from resetting to zero when the LED light (110) is taken off.
Description
Technical field
The present invention relates to the LED ignition device that LED (light-emitting diode) is lit a lamp and the ligthing paraphernalia that uses this LED ignition device.
Background technology
Along with the process of the time of lighting a lamp (accumulative total light a lamp the time, below identical), light beam reduces known illuminating light source.For example, following control (initial illumination is proofreaied and correct and controlled) being disclosed in patent documentation 1: according to the time of lighting a lamp of light source (fluorescent lamp), to dimming light sources, cuts down thus unnecessary electric power.
On the other hand, as illuminating light source, with LED, replace fluorescent lamp gradually.For example, in patent documentation 2, the LED lamp having with existing straight-pipe fluorescent lamp similar shape is disclosed.This LED light fixture has: on the installation base plate of band plate-like, a large amount of LED are installed and the light source region that forms; Light source region is accommodated in to the glass tube of inner Straight; By the tube head of the closed at both ends of glass tube; And terminal pin more outstanding than the side of tube head and for powering to light source region.This LED lamp handling are arranged on the lamp socket that is arranged at dedicated illumination utensil freely, from the LED ignition device carrying on this ligthing paraphernalia, via lamp socket, supply with electric power (direct current power), light a lamp thus.
In addition,, as the conventional example of LED ignition device, there is the device of recording in patent documentation 3.In the conventional example of patent documentation 3, carry out following control (constant current control): detect the electric current (output current) that imposes on the voltage (output voltage) of LED lamp (lamp socket) and flow through LED lamp, for example adjust output voltage, so that output current and desired value (, the rated current of LED lamp) are consistent.
Technical literature formerly:
Patent documentation 1: No. 3809747 communique of Japanese Patent
Patent documentation 2: TOHKEMY 2009-43447 communique
Patent documentation 3: TOHKEMY 2006-210271 communique
But there is following problem: for initial illumination proofreaies and correct control, the time of lighting a lamp of light source is being carried out to timing, and according to the time of lighting a lamp in the situation of dimming light sources, when light source welcomes end of lifetime and is replaced, the reset of the time of how lighting a lamp.For example, using fluorescent lamp as light source in the situation that, at the end of lifetime of fluorescent lamp, utilize the emitter (emitter) be coated on filament to consume and electrical characteristics this feature that changes, the reset of the time of automatically lighting a lamp.On the other hand, in the situation that LED lamp being carried out to initial illumination correction control, for example, power consumption moment while there is the faults such as broken string in LED lamp in LED lamp is zero, thus, the voltage of supplying with to LED lamp from LED ignition device rises to the voltage higher than steady state voltage, therefore, can rise and automatically the time of lighting a lamp is resetted by detecting this voltage.
But that records at patent documentation 2 like that can be from the LED lamp of ligthing paraphernalia handling, even in the situation that directly take off LED lamp from lamp socket under the state of LED ignition device action, also produce same high voltage.Therefore, if user in order to clean etc. and take off LED lamp from lamp socket, the time of lighting a lamp may reset mistakenly, can not correctly carry out the brightness adjustment control corresponding with the time of lighting a lamp.
In addition,, taking off from lamp socket LED lamp, again LED lamp is installed to lamp socket sometimes.In this situation, as mentioned above, the voltage of supplying with as described above to LED lamp rises to the voltage higher than steady state voltage, and after just LED lamp being installed again, the super-high-current (impulse current) that may have overrate flows through LED lamp.And when flowing through such super-high-current, the light-emitting diode of LED lamp may break down.
In the conventional example of recording at patent documentation 3, in the situation that taking off LED lamp, setting makes to become the standby mode of the voltage lower than steady state voltage or the stop mode that LED ignition device is stopped from the service voltage of LED ignition device, avoids thus above-mentioned impulse current.But after just taking off LED lamp, service voltage not yet fully reduces, if therefore moment connects LED lamp, may flow through impulse current.
Summary of the invention
The present invention completes in view of above problem, and its object is, carry out brightness adjustment control according to the time of lighting a lamp of LED lamp, and the in the situation that of there is broken string in LED lamp, automatically resets the time of lighting a lamp, so when taking off LED lamp the time of lighting a lamp do not reset.
LED ignition device of the present invention, is characterized in that, this LED ignition device possesses: electric power converter section, and output voltage is variable, current detecting part, detects the output current of supplying with to LED lamp via lamp socket from this electric power converter section, output voltage detection unit, detects and imposes on the described output voltage of LED lamp via described lamp socket, and determine whether it is the operation voltage of lighting a lamp normally, output control part, controls described electric power converter section and increases and decreases described output voltage, so that the output current being detected by described current detecting part is consistent with desired value, connect detection unit, judge described lamp socket and described LED lamp be connected have or not, sequential (sequence) control part, determine to forbid described output voltage detection unit and described connection detection unit acts of determination during, and set the desired value of described output current, the time timing portion of lighting a lamp, carries out timing to the time of lighting a lamp of described LED lamp, and storage part, storage is lit a lamp the time described in this time timing portion timing of lighting a lamp, result of determination at described connection detection unit is in connectionless situation, and in the result of determination of the described output voltage detection unit situation that is abnormal voltage, described output control part stops described electric power converter section, described output voltage is limited in below the lower limit of regulation, described sequencing control portion is according to lighting a lamp the time described in the described time timing portion timing of lighting a lamp, set the desired value of described output current, in the situation that the result of determination of described output voltage detection unit is abnormal, at the stopping period that described electric power converter section is stopped through after stipulated time, control again to start to supply with from described electric power converter section to LED lamp electric current, if become the number of times of described stopping period, arrive stipulated number, , light a lamp time timing portion and described storage part will described in the time of lighting a lamp reset to initial value.
In this LED ignition device, preferably possess: constant pressure source, applies constant voltage via described lamp socket; And detection resistance, via described lamp socket and the resistance that is connected in parallel in light-emitting diode in described LED lamp, be connected in parallel; Described connection detection unit has been judged to be connection when the voltage drop of described detection resistance is less than the threshold value of regulation, when being more than or equal to described threshold value, described voltage drop is judged to be without connecting, at least from described electric power converter section to described LED lamp, supply with electric current during, stop acts of determination.
In this LED ignition device, preferred described sequencing control portion has timer, according to by the time of this timer timing, decided forbid described output voltage detection unit and described connection detection unit acts of determination during, and in the situation that the result of determination of described output voltage detection unit is abnormal, determine to stop the stopping period of described electric power converter section.
Ligthing paraphernalia of the present invention, is characterized in that, this ligthing paraphernalia possesses: the LED ignition device described in the above-mentioned any one of the present invention, described lamp socket and the appliance body that keeps described LED ignition device and described lamp socket.
LED ignition device of the present invention and ligthing paraphernalia have following effect: carry out brightness adjustment control according to the time of lighting a lamp of LED lamp, and the in the situation that of producing broken string in LED lamp, the time of lighting a lamp is automatically reset, and then when taking off LED lamp, reset the time that do not make to light a lamp.
Accompanying drawing explanation
Fig. 1 is the circuit block diagram that the execution mode of LED ignition device of the present invention is shown.
Fig. 2 illustrates the time of lighting a lamp of LED ignition device of the present invention and the figure of the relation between target current value.
Fig. 3 be LED ignition device of the present invention for the time diagram of action is described.
When Fig. 4 is the LED lamp failure of LED ignition device of the present invention for the time diagram of action is described.
Fig. 5 is the stereogram that the execution mode of ligthing paraphernalia of the present invention is shown.
Label declaration
2, electric power converter section; 3, current detecting part; 4, output voltage detection unit; 5, output control part; 6, connect detection unit; 8, sequencing control portion; 9, the time timing portion of lighting a lamp; 10, storage part; 110, LED lamp; 120, lamp socket
Embodiment
Below, the execution mode that present invention will be described in detail with reference to the accompanying.
Fig. 1 is the circuit block diagram that the execution mode of LED ignition device of the present invention is shown.The LED lamp 110 of being lit a lamp by the LED ignition device of present embodiment has structure like the LED lamp & lantern of recording with patent documentation 1.That is, this LED lamp 110 has: the glass tube (with reference to Fig. 5) of the series circuit of a large amount of light-emitting diodes 111, the resistance R 110 being connected in parallel with this series circuit, Straight and by the tube head of the closed at both ends of glass tube (not shown).In addition, on tube head, give prominence to and be provided with pair of terminal pin (not shown), this pair of terminal pin is connected with the output of LED ignition device via lamp socket 120.And, from lamp socket 120, via terminal pin, to light-emitting diode 111, supply with direct current (output current Io).In addition, owing to being connected with rectifier DB1 between lamp socket 120 and the series circuit of light-emitting diode 111, therefore to not restriction of the combination between supporting plate A1, the A2 of lamp socket 120 and terminal pin, no matter with which kind of combination connect, all to the series circuit of light-emitting diode 111, supply with output current Io forward.
The LED ignition device of present embodiment has boost chopper portion 1, electric power converter section 2, current detecting part 3, output voltage detection unit 4, output control part 5, connects detection unit 6, constant pressure source 7, sequencing control portion 8, light a lamp time timing portion 9 and storage part 10 etc.
Boost chopper portion 1 is by from AC mains source, 100 alternating voltages of supplying with convert desirable direct voltage to and improve power factor (PF).Here, if the output voltage of boost chopper portion 1 is set as to 400 volts strong, supply voltage value can be corresponding to the AC mains source 100 of the wide region from 100 volts to 242 volts.
Electric power converter section 2 consists of existing known buck circuit, and this buck circuit possesses: thyristor (being designated hereinafter simply as switch element) Q1, inductor L1, diode D1 and the capacitor C1 of bipolar transistor or field-effect transistor etc.
Output voltage detection unit 4 possesses: be connected to the divider resistance R1 at (between the two ends of capacitor C1) between the output of electric power converter section 2, the series circuit of R2, and comparator C P101.By the detection voltage after divider resistance R1, R2 dividing potential drop (voltage being directly proportional to the output voltage V o of electric power converter section 2) and the output voltage of comparator C P101, be output to sequencing control portion 8.Relatively, by the detection voltage after divider resistance R1, R2 dividing potential drop and the threshold value Vref3 that is input to the minus side input of comparator C P101, if detect voltage, be greater than threshold value Vref3, be judged to be abnormal.In addition, the output of comparator C P101 (result of determination of output voltage detection unit 4) is input to sequencing control portion 8, according to the output of sequencing control portion 8, output control part 5 is made as to action or is failure to actuate, electric power converter section 2 and boost chopper portion 1 are made as to action or are failure to actuate.
Sequencing control portion 8 consists of microcontroller (being designated hereinafter simply as micro-control), carries out in advance by timing action, the acts of determination of program setting, is stored in the storage etc. of the state of reading, setting of the data in memory.Here, the time of lighting a lamp of LED lamp 110 is by time timing portion 9 timing of lighting a lamp, and is written at any time storage part 10.And sequencing control portion 8 lights a lamp the time according to the LED lamp of reading from storage part 10, as shown in Figure 2, set the target current value of LED lamp 110.That is the process, the target current value of LED lamp 110 being set as with the time of lighting a lamp increases in direct ratioly.
Current detecting part 3 forms by detecting resistance R 3, and this detection resistance R 3 is inserted between the output of negative potential side and the negative side A2 of lamp socket 120 of electric power converter section 2.And the voltage drop of the detection resistance R 3 that output current Io is caused outputs to output control part 5 as detecting voltage from current detecting part 3.
Output control part 5 has: the drive circuit 50 that the switch element Q1 of electric power converter section 2 is driven; For drive circuit 50 being carried out to the feedback circuit 51 of FEEDBACK CONTROL; And the control circuit of chopping 52 that boost chopper portion 1 is controlled etc.In this output control part 5, electric power converter section 2 is controlled to increase and decrease output voltage V o, so that the output current Io being detected by current detecting part 3 is consistent with target current value.In the situation that feedback circuit 51 consists of the integrating circuit based on operational amplifier OP100, in advance the data of the load current value of LED lamp 110 are stored in the memory of sequencing control portion 8, the data of reading from this memory and the detection voltage being detected by current detecting part 3 are compared to computing, the duty of adjusting switch element Q1 recently increases and decreases output voltage V o, so that it is consistent with the target current value being stored in memory to detect voltage.That is, output control part 5 is controlled the constant current that constant electric current (rated current) flows through LED lamp 110.
Here, the rated voltage of LED lamp 110 becomes the value (=Vf * n) that is multiplied by the number n of this light-emitting diode 111 and obtains on the forward voltage Vf of the light-emitting diode 111 using.For example, if establish forward voltage Vf, be 3.5 volts, the number of light-emitting diode 111 is 20,3.5 * 20=70 volt is rated voltage; If establishing the number of light-emitting diode 111 is 10,3.5 * 10=35 volt is rated voltage.By output control part 5, carry out constant current control, can be by a plurality of LED lamps that same LED ignition device is constant to rated current and rated voltage is different, for example at least have from the LED lamp of the rated voltage of 35 volts to 70 volts and light a lamp.
From controlling power supply unit 130, to output control part 5, supply with and control power supply.In order to generate the driving signal of supplying with to the switch element Q1 of electric power converter section 2, from controlling power supply unit 130, via diode D101, capacitor C101 is charged.But controlling power supply unit 130 can consist of existing known circuit, diagram and the explanation of therefore omitting detailed structure.
Constant pressure source 7 consists of resistance R 4 and Zener diode 70, one end of this resistance R 4 is connected with the output of the hot side of boost chopper portion 1, the negative electrode of this Zener diode 70 is connected with the other end of resistance R 4, and anode is connected with the low potential side A2 of lamp socket 120.And the constant voltage (Zener voltage Vz) producing at the two ends of Zener diode 70 (between negative electrode anode) is applied to and connects detection unit 6, and is applied to lamp socket 120 via resistance R 5.In addition, the constant voltage applying from constant pressure source 7 (Zener voltage Vz) need to be made as to the voltage lower than the rated voltage of LED lamp 110.And, in order to use the multiple LED lamp that rated voltage is different, using the minimum LED lamp of rated voltage as benchmark, to set constant voltage (Zener voltage Vz) lower than the mode of this rated voltage.
And, in the situation that the rated voltage of LED lamp 110 surpasses dangerous voltage and surpasses dangerous voltage by the voltage after resistance R 5, R6, R7 dividing potential drop, the constant voltage applying (Zener voltage Vz) must be made as to the voltage lower than dangerous voltage from constant pressure source 7.In addition, how much different the magnitude of voltage of dangerous voltage because of public standard, but conventionally for direct current, are made as the voltage that surpasses 50 volts.
Connecting detection unit 6 possesses: the series circuit of three resistance R 5, R6, R7, is connected between the negative electrode of Zener diode 70 and the low potential side A2 of lamp socket 120; And comparator C P100, voltage drop and threshold voltage Vref1 on comparison resistance (detection resistance) R7.In addition, the tie point of two resistance R 5, R6 is connected with the hot side of lamp socket 120.While not connecting the state (no-load condition) of LED lamp 110 on lamp socket 120, to the plus end input of comparator C P100, by three resistance R 5, R6, R7, Zener voltage Vz is carried out to the voltage (voltage drop in resistance R 7) after dividing potential drop.On the other hand, while being connected with the state (having load condition) of LED lamp 110 on lamp socket 120, the resistance R 110 of LED lamp 110 and two resistance R 6, R7 are connected in parallel.Voltage drop in resistance R 7 while thus, having load condition is also low during than no-load condition.Between voltage drop in resistance R 7 while the threshold voltage Vref1 that is input to the negative terminal of comparator C P100 being set as to voltage drop in the resistance R 7 when having load condition and no-load condition here.Therefore, when no-load condition, comparator C P100 is output as high level, and when having load condition, comparator C P100 is output as low level.In addition, the output of comparator C P100 (result of determination that connects detection unit 6) is imported into sequencing control portion 8, according to the output of sequencing control portion 8, output control part 5 is made as to action or is failure to actuate, electric power converter section 2 and boost chopper portion 1 are made as to action or are failure to actuate.
Next, with reference to the time diagram of Fig. 3, describe the action of the LED ignition device of present embodiment in detail.First, not shown mains switch is put at moment t0, starts to supply with from the power supply in AC mains source 100.Boost chopper portion 1 starts the output voltage of boost chopper portion 1 of (from moment t0 to t1) before action, as shown in Fig. 3 (g), become to the supply voltage in AC mains source 100 carry out full-wave rectification and level and smooth after the voltage that obtains.The output voltage of constant pressure source 7 now, as shown in Fig. 3 (a), become the constant voltage of being determined by Zener voltage Vz, in the situation that LED lamp 110 is connected on lamp socket 120, the positive side input voltage that forms the comparator C P100 that connects detection unit 6 becomes the voltage lower than threshold value Vref1.In the connectionless result of determination that has that connects detection unit 6, be imported into sequencing control portion 8.
Sequencing control portion 8 has clocking capability, till t1 is made as output control part 5 to be failure to actuate constantly.In addition, till moment t1 connects the result of determination of detection unit 6, be to be judged as in the situation of connection, sequencing control portion 8 output action signals and the action of output control part 5 is started, and forbid the later connection judgement of t1 constantly, in the result of determination that connects detection unit 6 for being judged as in connectionless situation, sequencing control portion 8 stops clocking capability, maintains all the time the state of t0 constantly.
After moment t1, if from sequencing control portion 8 output action signals, the control circuit of chopping 52 of output control part 5 and drive circuit 50, respectively as shown in Fig. 3 (e), Fig. 3 (f), start to drive the output of signal.In addition, control circuit of chopping 52 is existing known, carries out following control (PWM control): detect the output voltage of boost chopper portion 1 and be entered into error amplifier, determining the conduction period of switch element according to the output signal of error amplifier.In addition, drive circuit 50 for example has constant voltage pooling feature, can be configured to: corresponding to the electric current that flows through resistance R 109, increase this situation, shorten the conduction period of switch element Q1, described resistance R 109 is connected between the lead-out terminal Pls and ground wire of this constant voltage pooling feature.
And the output of the operational amplifier OP100 of feedback circuit 51 is connected via the resistance R 100 and series circuit of diode D102 and the output Pls of drive circuit 50.Therefore, in the situation that lower from the detection voltage of current detecting part 3 inputs, the output voltage of operational amplifier OP100 reduces, from the bleed magnitude of current of (sink) operational amplifier OP100 of output Pls, increase, in the situation that higher from the detection voltage of current detecting part 3 inputs, the output voltage of operational amplifier OP100 rises, and from the bleed magnitude of current of operational amplifier OP100 of output Pls, reduces.Thus, can adjust the duty ratio of switch element Q1, so that it is consistent with the load current value (target current value) being stored in the memory of sequencing control portion 8 to detect voltage.As shown in Fig. 3 (d), be stored in target current value in the memory of sequencing control portion 8 moment t1 be than with for being made as the magnitude of voltage that magnitude of voltage that the target current value of regulation light beam is suitable is low, after the definite moment t2 of the clocking capability by sequencing control portion 8, be altered to the magnitude of voltage suitable with target current value.The reason of carrying out this control is, the output voltage of the larger boost chopper of output voltage portion 1 rises more lentamente, till arriving assigned voltage, need the long time, therefore, as in the present embodiment, start at the same time in the situation of action of boost chopper portion 1 and electric power converter section 2, wish to make the electric power converter section 2 from just starting action to supply with minimum to the electric power of LED lamp 110, the output voltage of boost chopper portion 1 sharply rises, and arrives at short notice thus desired voltage.
At moment t1, to t2, as shown in Fig. 3 (g), the output voltage of boost chopper portion 1 rises.Now, corresponding to output end voltage (with reference to Fig. 3 (h)) this situation that rises of electric power converter section 2, form to connect the positive side input voltage (with reference to Fig. 3 (b)) of comparator C P100 of detection unit 6 and the positive side input voltage that forms the comparator C P101 of output voltage detection unit 4 also rise (with reference to Fig. 3 (c)).Here, as mentioned above, because sequencing control portion 8 forbids the later connection of t1 constantly, judge, even if therefore the positive side input voltage of comparator C P100 is larger than threshold value Vref1, also can not produce misinterpretation.
Here, when when moment t3 takes off LED lamp 110 from lamp socket 120, the electric current I o that flows through LED lamp 110 becomes zero as shown in Fig. 3 (i), and the output end voltage of electric power converter section 2 (with reference to Fig. 3 (h)) starts to rise.If the detection voltage definite by the voltage ratio of resistance R 1, R2 surpasses threshold value Vref3 at moment t4, be judged to be and produced load abnormal (non-loaded), from comparator C P101 to sequencing control portion 8 output stop signals.Sequencing control portion 8 is according to the output of stop signal change actuating signal, and to stop the action of output control part 5, boost chopper portion 1 and electric power converter section 2 stop action.But, after having exported the moment t4 of stop signal, forbid the abnormality juding of output voltage detection unit 4.
If electric power converter section 2 stops action, as shown in Fig. 3 (h), the output voltage V o of electric power converter section 2 reduces, but till the time of the capacitor C1 electric discharge of electric power converter section 2, maintaining the connection judgement of being undertaken by connection detection unit 6 forbids, if passed through by definite time of the clocking capability of sequencing control portion 8 (time from moment t4 to moment t5), the connection that restarts to be undertaken by connection detection unit 6 is judged.At this time point, the clocking capability of sequencing control portion 8 resets and returns to initial condition.
Here, in the situation that the voltage more than electric power converter section 2 has been exported the rated voltage of LED lamp 110 during no-load condition, after LED lamp 110 has just been connected to lamp socket 120, may flow through the super-high-current of overrate.But, in the LED of present embodiment ignition device, till connect detection unit 6 judge LED lamps connection have or not 110, output control part 5 stops the action of electric power converter section 2, at connection detection unit 6, be judged to be connection (having load condition) afterwards, output control part 5 starts the action of electric power converter section 2, therefore can not apply voltage more than rated voltage to LED lamp 110.As a result, suppress the impulse current that flows through when LED lamp 110 is installed on lamp socket 120, therefore can prevent the fault of LED lamp 110.
And, LED lamp 110 is taken off from lamp socket 120, stopped electric power converter section 2 tight after, in lamp socket 120, produce high voltage.But, if the resistance value of resistance R 5 is set as to smaller value, can make sharp lower voltage by via resistance R 5 and Zener diode 70 current flowings, therefore can further suppress impulse current.
Next, with reference to time diagram explanation LED lamp 110 under the state of electric power converter section 2 actions of Fig. 4, produce the situation of fault.When the faults such as the interior generation broken string of LED lamp 110, and when taking off LED lamp 110, lamp socket 120 is in fact identical situation.Therefore, at moment t6, when the interior generation of LED lamp 110 is broken, the electric current that flows through LED lamp 110 is zero, and the output end voltage of electric power converter section 2 starts to rise.As shown in Fig. 4 (c), when the definite detection voltage of the voltage ratio by resistance R 1, R2 is when moment t7 surpasses threshold value Vref3, output voltage detection unit 4 is judged to be and has produced load abnormal and to sequencing control portion 8 output stop signals.Thereby sequencing control portion 8 stops the action of boost chopper portion 1 and electric power converter section 2 according to the output of stop signal change actuating signal, to stop the action of output control part 5, and then forbid the later abnormality juding of t7 constantly.
As shown in Fig. 3 (h), if electric power converter section 2 stops action, the output voltage V o of electric power converter section 2 reduces, but the time till the capacitor C1 of electric power converter section 2 electric discharge, maintaining the connection judgement of being undertaken by connection detection unit 6 forbids, if passed through by definite time of the clocking capability of sequencing control portion 8 (time from moment t7 to moment t8), the connection that restarts to be undertaken by connection detection unit 6 is judged.Here, constantly during t7～t8 and the moment t4～t5 shown in Fig. 3, equate.
When the faults such as the interior generation broken string of LED lamp 110, as shown in Fig. 4 (b), the positive side input voltage of comparator C P100 becomes lower than threshold value Vref1 at moment t8 time point, is therefore judged to be the state that is keeping being connected with LED lamp 110.Now, the action that sequencing control portion 8 maintains electric power converter section 2 stops, until the time (the stopping period T2 of t8～t9 constantly) through being determined by clocking capability.And sequencing control portion 8 makes stopping period number of times increase progressively (increment) at the time point of moment t9, output action signal is to restart the action of output control part 5.According to this actuating signal, the control circuit of chopping 52 of output control part 5 and drive circuit 50 start to drive respectively the output of signal as shown in Fig. 4 (e), Fig. 4 (f).So the output end voltage of electric power converter section 2 starts again to rise, as shown in Fig. 4 (c), the detection voltage definite by the voltage ratio of resistance R 1, R2 surpasses threshold value Vref3 at moment t10.Now, output voltage detection unit 4 is judged to be and has produced load abnormal, to sequencing control portion 8 output stop signals.The constantly later action of the t10 action later with above-mentioned moment t7 is identical, at moment t11, connect detection unit 6 and again restart to connect judgement, maintain the action that stops electric power converter section 2, until passed through by definite time of the clocking capability of sequencing control portion 8 (the stopping period T2 of t11～t12 constantly).Time point at moment t12, sequencing control portion 8 increases progressively stopping period number of times, by carrying out the counting of twice stopping period number of times, and be judged as at the interior broken string that produced of LED lamp 110, reset to zero by time of lighting a lamp of time timing portion 9 timing of lighting a lamp and time of lighting a lamp of being stored in storage part 10.
Thus, LED lamp 110 is interior while having produced the faults such as broken string, the time of lighting a lamp of LED lamp 110 automatically resets into zero, can prevent that the time of lighting a lamp resets to zero situation when taking off LED lamp 110.In addition, in the present embodiment, when stopping period has completed twice, the time of lighting a lamp automatically resets, but the number of times of the stopping period of the time reset of lighting a lamp can be also 3 above arbitrary number of times.In addition, the LED ignition device of present embodiment is lit a lamp to a LED lamp 110, can certainly make a plurality of LED lamps 110 that are connected in series light a lamp simultaneously.And, also can form comparator CP101 and sequencing control portion 8 by a micro-control.
In addition, the LED ignition device of present embodiment for example carries on the ligthing paraphernalia shown in Fig. 5.This ligthing paraphernalia has: the appliance body 130 that is vertically attached to ceiling; And be arranged on a pair of lamp socket 120,120 on appliance body 130.It is trapezoidal lengthwise angle tubular that appliance body 130 forms the side view of observing from length direction, and LED ignition device has been taken in its inside.Length direction both ends at the lower surface of appliance body 130 are equipped with respectively lamp socket 120,120.This lamp socket 120,120 has identical structure with the fluorescence of existing known Straight with lamp socket.
Here, at any one the LED lamp 110 from two lamp sockets 120,120, supply with in the situation of direct current, when mistakenly fluorescent lamp being installed, may supply with direct current to filament portion.But, if for example when being judged as output voltage V o by output voltage detection unit 4 and being less than setting (< rated voltage), electric power converter section 2 stops, even if, in the situation that fluorescent lamp is arranged on lamp socket 120 mistakenly, can there is not the fault of unsafe phenomenon and LED ignition device etc. yet.
Here, even if fluorescent lamp is arranged on lamp socket 120 mistakenly, on 120, whether safe user also cannot distinguish, therefore the electrode shape of the tube head of LED lamp 110 can be made as to the shape different from fluorescent lamp to prevent wrong installation, also the structure of lamp socket 120,120 can be made as to the structure identical with the electrode shape of the tube head of LED lamp 110.
Claims (4)
1. a LED ignition device, is characterized in that, possesses:
Electric power converter section, output voltage is variable;
Current detecting part, detects the output current of supplying with to LED lamp via lamp socket from this electric power converter section;
Output voltage detection unit, detects and imposes on the described output voltage of LED lamp via described lamp socket, and determine whether it is the operation voltage of lighting a lamp normally;
Output control part, controls described electric power converter section and increases and decreases described output voltage, so that the output current being detected by described current detecting part is consistent with desired value;
Connect detection unit, judge described lamp socket and described LED lamp be connected have or not;
Sequencing control portion, determine to forbid described output voltage detection unit and described connection detection unit acts of determination during, and set the desired value of described output current;
The time timing portion of lighting a lamp, carries out timing to the time of lighting a lamp of described LED lamp; And
Storage part, storage is lit a lamp the time described in this time timing portion timing of lighting a lamp;
In the situation that the result of determination of described connection detection unit is in connectionless situation and the result of determination of described output voltage detection unit is abnormal voltage, described output control part stops described electric power converter section, described output voltage is limited in below the lower limit of regulation
Described sequencing control portion is according to lighting a lamp the time described in the described time timing portion timing of lighting a lamp, set the desired value of described output current, in the situation that the result of determination of described output voltage detection unit is abnormal, at the stopping period that described electric power converter section is stopped through after stipulated time, control again to start to supply with from described electric power converter section to LED lamp electric current
If become the number of times of described stopping period, reach stipulated number, light a lamp described in time timing portion and described storage part will described in the time of lighting a lamp reset to initial value.
2. LED ignition device according to claim 1, is characterized in that,
This LED ignition device possesses:
Constant pressure source, applies constant voltage via described lamp socket; And
Detect resistance, via described lamp socket and the resistance that is connected in parallel in light-emitting diode in described LED lamp, be connected in parallel;
Described connection detection unit has been judged to be connection when the voltage drop of described detection resistance is less than the threshold value of regulation, when being more than or equal to described threshold value, described voltage drop is judged to be without connecting, at least from described electric power converter section to described LED lamp, supply with electric current during, stop acts of determination.
3. LED ignition device according to claim 1 and 2, is characterized in that,
Described sequencing control portion has timer, according to by the time of this timer timing, decided forbid described output voltage detection unit and described connection detection unit acts of determination during, and in the situation that the result of determination of described output voltage detection unit is abnormal, determine to stop the stopping period of described electric power converter section.
4. a ligthing paraphernalia, is characterized in that, possesses:
LED ignition device as described in any one in claim 1～3, as described in lamp socket and keep as described in LED ignition device and as described in the appliance body of lamp socket.
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| Application Number | Priority Date | Filing Date | Title |
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| JP2010199327A JP5645250B2 (en) | 2010-09-06 | 2010-09-06 | LED lighting device and lighting apparatus using the same |
| JP199327/2010 | 2010-09-06 |
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| TW201345317A (en) * | 2012-04-17 | 2013-11-01 | Lextar Electronics Corp | Illumination system |
| JP7145464B2 (en) * | 2018-11-01 | 2022-10-03 | パナソニックＩｐマネジメント株式会社 | Lighting device, lighting device and emergency lighting system |
| CN110582153B (en) * | 2019-08-01 | 2022-04-01 | 福建睿能科技股份有限公司 | Driving circuit, driving method thereof and electronic ballast |
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| CN101057389A (en) * | 2004-10-26 | 2007-10-17 | 松下电工株式会社 | Discharge lamp lighting device, and lighting equipment and lighting system using the device |
| JP4169008B2 (en) * | 2005-01-31 | 2008-10-22 | 松下電工株式会社 | LED driving device and lighting device using the same |
| JP4241027B2 (en) * | 2002-12-24 | 2009-03-18 | パナソニック電工株式会社 | Power supply |
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| JP4342262B2 (en) * | 2003-10-03 | 2009-10-14 | アルエイド株式会社 | LED lighting control device and LED lighting control method |
| US7391335B2 (en) * | 2005-08-18 | 2008-06-24 | Honeywell International, Inc. | Aerospace light-emitting diode (LED)-based lights life and operation monitor compensator |
| JP4675250B2 (en) * | 2006-02-08 | 2011-04-20 | 三菱電機株式会社 | Discharge lamp lighting device and discharge lamp lighting method |
| CA2621909C (en) * | 2007-02-19 | 2012-01-31 | Marlex Engineering Inc. | An impedance controlled electronic lamp circuit |
| JP2009037793A (en) * | 2007-07-31 | 2009-02-19 | Toshiba Lighting & Technology Corp | Control device and illuminating device |
| JP2010113897A (en) * | 2008-11-05 | 2010-05-20 | Panasonic Corp | Illumination device |
| JP2010113924A (en) * | 2008-11-06 | 2010-05-20 | Shindengen Electric Mfg Co Ltd | Led lighting driving circuit, semiconductor intergrated circuit, and lighting fixture |
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| JP4241027B2 (en) * | 2002-12-24 | 2009-03-18 | パナソニック電工株式会社 | Power supply |
| CN101057389A (en) * | 2004-10-26 | 2007-10-17 | 松下电工株式会社 | Discharge lamp lighting device, and lighting equipment and lighting system using the device |
| JP4169008B2 (en) * | 2005-01-31 | 2008-10-22 | 松下電工株式会社 | LED driving device and lighting device using the same |
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| JP5645250B2 (en) | 2014-12-24 |
| CN102413604A (en) | 2012-04-11 |
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