CN105050230A - Lighting device and illuminating tool using the lighting device - Google Patents
Lighting device and illuminating tool using the lighting device Download PDFInfo
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- CN105050230A CN105050230A CN201510178020.2A CN201510178020A CN105050230A CN 105050230 A CN105050230 A CN 105050230A CN 201510178020 A CN201510178020 A CN 201510178020A CN 105050230 A CN105050230 A CN 105050230A
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Abstract
The invention provides a lighting device and an illuminating tool using the lighting device. The illuminating device can control light regulation ration to determine the output of light. The lighting device comprises a pair of terminals, a first rectifier, an electric power converting circuit, a control circuit, a second rectifier, a detection circuit and a judging circuit. The judging circuit judges the voltage detected across a detection circuit is above a first valve value time. The electric power converting circuit is provided with a switch component. The control circuit controls the switch component based on the above mentioned phase.
Description
Technical field
The present invention relates to a kind of lamp device that light source portion is lighted and the ligthing paraphernalia employing this lamp device.
Background technology
In the past, a kind of illuminator (for example, referring to Japanese Unexamined Patent Publication No 2012-185998, hereinafter referred to as " document 1 ") possessing ligthing paraphernalia and the dimmer to the light modulation that ligthing paraphernalia carries out was proposed.
In the illuminator described in document 1, the series circuit of dimmer and source power supply is electrically connected on ligthing paraphernalia (hereinafter referred to as " ligthing paraphernalia of conventional example ").Dimmer possesses three terminal bidirectional switch.
The ligthing paraphernalia of conventional example possesses light source portion and dimmer switch portion (such as switch element).Dimmer switch portion is configured to make the power supply conduction and cut-off to light source portion.
In addition, the ligthing paraphernalia of conventional example possesses rectification part, partes glabra, voltage detection department and dimming control part.Rectification part is configured to carry out rectification to the alternating voltage supplied from source power supply.Partes glabra is configured to export to light source portion at the rear of the output smoothing by rectification part.Voltage detection department is configured to the output voltage detecting rectification part.Dimming control part is configured to based on detecting the angle of flow detecting three terminal bidirectional switch during voltage with voltage detection department.In addition, dimming control part is configured to by carrying out light modulation with the conduction and cut-off of the duty ratio switch light modulation switch portion based on the above-mentioned angle of flow to light source portion.
In the ligthing paraphernalia of conventional example, dimming control part based on detect voltage with voltage detection department during the light modulation of corresponding light source portion than the conduction and cut-off carrying out switch light modulation switch portion.
Such as, but in the ligthing paraphernalia of conventional example, when being superimposed with noise on the power line of the zero crossing time point source power supply of the alternating voltage at source power supply, " during detecting voltage with voltage detection department " likely changes.Thus, dimming control part likely based on the light modulation of mistake than the conduction and cut-off of switch light modulation switch portion.
Summary of the invention
the problem that invention will solve
The object of the present invention is to provide and a kind ofly can suppress the lamp device of the error detection of light modulation ratio and employ the ligthing paraphernalia of this lamp device, this light modulation is than the light output determining light source portion.
for the scheme of dealing with problems
Lamp device involved by a mode of the present invention is the lamp device that the light source portion possessing solid-state light emitting element is lighted.Lamp device possesses pair of terminal, the 1st rectification circuit, power conversion circuit, control circuit, the 2nd rectification circuit, testing circuit and decision circuitry.Above-mentioned 1st rectification circuit is configured to the alternating voltage after to phase control and carries out full-wave rectification.It is the direct voltage of regulation or the direct current of regulation that above-mentioned power conversion circuit is configured to being carried out the voltage transitions after full-wave rectification by above-mentioned 1st rectification circuit.Above-mentioned control circuit is configured to control above-mentioned power conversion circuit.Above-mentioned 2nd rectification circuit is configured to the alternating voltage after to above-mentioned phase control and carries out full-wave rectification.Above-mentioned testing circuit is configured to detect and carries out the voltage after full-wave rectification by above-mentioned 2nd rectification circuit.Above-mentioned decision circuitry is configured to, the time large to the 1st threshold value preset from the voltage ratio detected by above-mentioned testing circuit lights until the voltage drop that detected by above-mentioned testing circuit detects during being low to moderate the time point of the 2nd threshold value preset, and judge that whether above-mentioned period is the size of the phase place of the voltage detected by above-mentioned testing circuit.Above-mentioned 1st rectification circuit and above-mentioned 2nd rectification circuit are configured to, and when the series circuit of AC power and light modulating device is connected between above-mentioned pair of terminal, carry out full-wave rectification to the alternating voltage after above-mentioned phase control.Above-mentioned power conversion circuit possesses switch element.Above-mentioned control circuit is configured to, and when being judged as that above-mentioned period is the size of above-mentioned phase place by above-mentioned decision circuitry, the above-mentioned period based on the size being judged as being above-mentioned phase place controls above-mentioned switch element.
The above-mentioned lamp device that ligthing paraphernalia involved by a mode of the present invention possesses above-mentioned light source portion, above-mentioned light source portion is lighted and the appliance body being provided with above-mentioned light source portion.
Accompanying drawing explanation
Fig. 1 is the synoptic circuit diagram of the ligthing paraphernalia of the lamp device possessing present embodiment.
Fig. 2 is the synoptic circuit diagram of the leadage circuit of the ligthing paraphernalia that present embodiment is described.
Fig. 3 is the synoptic circuit diagram of the illuminator of the ligthing paraphernalia possessing present embodiment.
Fig. 4 is the oscillogram of voltage representing the voltage applied lamp device, the voltage applied the converter section of light modulating device with the lamp device of present embodiment relatively and detected by the testing circuit of lamp device.
Fig. 5 is the key diagram of the determination methods that decision circuitry is described relatively with the lamp device of present embodiment.
Fig. 6 is the key diagram of other determination methods that decision circuitry is described relatively with the lamp device of present embodiment.
Fig. 7 is the key diagram of other determination methods that decision circuitry is described relatively with the lamp device of present embodiment.
Fig. 8 is the summary end view of the Construction State of the ligthing paraphernalia of present embodiment.
Embodiment
Below, reference Fig. 1 ~ Fig. 7 is while illustrate the lamp device 22 of present embodiment.In addition, below for convenience of explanation, after on one side explanation possesses the illuminator 30 of the ligthing paraphernalia 20 of present embodiment with reference to Fig. 3, lamp device 22 is explained.
As shown in Figure 3, illuminator 30 possesses ligthing paraphernalia 20 and light modulating device 10.Ligthing paraphernalia 20 is electrically connected with the AC power 40 of the alternating voltage of sine wave output shape and the series circuit of light modulating device 10.Light modulating device 10 is configured to carry out phase control to the alternating voltage from AC power 40.AC power 40 is such as source power supply.Light modulating device 10 is such as dimmer.In addition, below for convenience of explanation, sometimes also the alternating voltage after phase control is called " phase control voltage ".In addition, about the voltage waveform of phase control voltage, comprise in the voltage waveform of alternating voltage corresponding with the half period amount of alternating voltage during voltage waveform.
As shown in Figure 3, light modulating device 10 possesses pair of terminal 1A, 1B, filter circuit 2, switching device 3, control circuit 4, power circuit 5 and configuration part 6.
Filter circuit 2 is electrically connected with between pair of terminal 1A, 1B.In addition, between pair of terminal 1A, 1B, switching device 3 is electrically connected with.Power circuit 5 is also electrically connected with between pair of terminal 1A, 1B.
The series circuit of AC power 40 and ligthing paraphernalia 20 can be electrically connected between pair of terminal 1A, 1B.In addition, below for convenience of explanation, sometimes also the terminal 1A in pair of terminal 1A, 1B is called " the 1st splicing ear 1A ", terminal 1B is called " the 2nd splicing ear 1B ".
Filter circuit 2 is configured to remove noise.Filter circuit 2 is such as the lc circuit of capacitor (hereinafter referred to as " the 1st capacitor ") C1 and inductor (hereinafter referred to as " the 1st inductor ") L1.1st capacitor C1 is connected electrically between pair of terminal 1A, 1B.1st end of the 1st inductor L1 is electrically connected with the 2nd splicing ear 1B.
Switching device 3 is such as bidirectional thyristor in the present embodiment.1st main terminal of bidirectional thyristor is electrically connected with the 1st splicing ear 1A.2nd main terminal of bidirectional thyristor is electrically connected with the 2nd end of the 1st inductor L1.The control terminal of bidirectional thyristor is electrically connected with control circuit 4.That is, switching device 3 is connected electrically between the pair of output of filter circuit 2, and the control terminal of switching device 3 is electrically connected on control circuit 4.In light modulating device 10, use bidirectional thyristor to be used as switching device 3, but be not limited to this.Switching device 3 also can be such as the structure of two n channel mosfets being carried out differential concatenation connection and obtaining.If enumerate an example to be described, then switching device 3 also can be such as that two n channel mosfets carry out differential concatenation connection and the structure obtained after being connected to each other by source electrode.
Control circuit 4 is configured to control switch device 3.Control circuit 4 possesses control part 8, diode (hereinafter referred to as " the 1st diode ") D1 and synchronizing signal generating unit 9.
The negative pole of the 1st diode D1 is electrically connected with the 1st splicing ear 1A.The positive pole of the 1st diode D1 is electrically connected with synchronizing signal generating unit 9.Synchronizing signal generating unit 9 is electrically connected with control part 8.In addition, synchronizing signal generating unit 9 is electrically connected with the ground end of light modulating device 10.
Synchronizing signal generating unit 9 is configured to generate synchronizing signal based on the size of the alternating voltage of AC power 40.In addition, synchronizing signal generating unit 9 is configured to export above-mentioned synchronizing signal to control part 8.
The output level of above-mentioned synchronizing signal is set to high level only exceed the set point preset at the absolute value of the alternating voltage of AC power 40 during by synchronizing signal generating unit 9.
Control part 8 is configured to control switch device 3.Control part 8 is such as the microcomputer (hereinafter referred to as " the 1st microcomputer ") being provided with program (hereinafter referred to as " the 1st program ").1st program is such as stored in the memory (hereinafter referred to as " the 1st memory ") being pre-set at the 1st microcomputer.In addition, in light modulating device 10, use the 1st microcomputer to be used as control part 8, but be not limited to this.Control part 8 also can be such as control IC (the 1st control IC) (IntegratedCircuit: integrated circuit).
In addition, control part 8 is configured to carry out phase control by control switch device 3 to the alternating voltage from AC power 40.So-called phase control, such as refer to and make switching device 3 become cut-off state from conducting state when the alternating voltage of AC power 40 is zero, make switching device 3 become conducting state from cut-off state in during above-mentioned synchronizing signal is high level, thus the alternating voltage from AC power 40 is controlled.
Power circuit 5 is configured to supply electric power to control circuit 4.Power circuit 5 is the constant voltage circuits being configured to export fixing voltage.If specifically described, then power circuit 5 is configured to the direct voltage V1 (hereinafter referred to as " the 1st direct voltage V1 ") generating regulation according to phase control voltage.In addition, power circuit 5 is configured to the 1st direct voltage V1 to be supplied to control circuit 4.In a word, power circuit 5 is configured to generate the 1st direct voltage V1 according to the alternating voltage of AC power 40 and supply the 1st direct voltage V1 to control circuit 4.
Power circuit 5 possesses rectifier smoothing circuit 11, converter section 12 and capacitor (hereinafter referred to as " the 2nd capacitor ") C2.
Rectifier smoothing circuit 11 is configured to carry out rectification and smoothing processing to phase control voltage.Rectifier smoothing circuit 11 such as possesses diode (hereinafter referred to as " the 2nd diode ") D2 and capacitor (hereinafter referred to as " the 3rd capacitor ") C3.In addition, although rectifier smoothing circuit 11 possesses the 2nd diode D2 and the 3rd capacitor C3, this is not defined in especially.
It is the 1st direct voltage V1 that converter section 12 is configured to being carried out the voltage transitions after rectification and smoothing processing by rectifier smoothing circuit 11.Converter section 12 is such as dc-dc.The 1st input in a pair input of converter section 12 (dc-dc) is electrically connected with the positive pole of the 2nd diode D2.The negative pole of the 2nd diode D2 is electrically connected with the 1st splicing ear 1A.The 2nd input in a pair input of converter section 12 (dc-dc) is electrically connected with the 2nd end of the 1st inductor L1.The 3rd capacitor C3 is electrically connected with between a pair input of converter section 12 (dc-dc).
2nd capacitor C2 is connected electrically between the pair of output of converter section 12 (dc-dc).The terminal of the hot side of the 2nd capacitor C2 is electrically connected with control part 8.The terminal of the low potential side of the 2nd capacitor C2 is electrically connected with the ground end of light modulating device 10.
Configuration part 6 is configured to the angle of flow of configuration switch device 3.Configuration part 6 possesses variable resistance 13 and operating portion (driver plate, carry button etc.).The angle of flow of switching device 3 is equivalent to during switching device 3 is conducting state.Aforesaid operations portion is installed on the capacity terminal of variable resistance 13.
The resistance value that variable resistance 13 is configured to be used in setting direct voltage (hereinafter referred to as " 2nd the direct voltage ") V2 corresponding with the angle of flow of switching device 3 is variable.Variable resistance 13 is such as the potentiometer possessing three terminals.Potentiometer is used as voltage divider.Potentiometric two terminals (hereinafter referred to as " the 1st terminal " and " the 2nd terminal ") are connected with the two ends of resistive element, remaining terminal (hereinafter referred to as " the 3rd terminal ") with can be connected along the sliding contact of resistive element mechanically movement.
Potentiometric 1st terminal is electrically connected with the terminal of the hot side of the 2nd capacitor C2.Potentiometric 2nd terminal is electrically connected with the ground end of light modulating device 10.Potentiometric 3rd terminal is electrically connected with control part 8.In light modulating device 10, decide the magnitude of voltage of the 2nd direct voltage V2 according to the resistance value of variable resistance 13.That is, in light modulating device 10, the size of the angle of flow of switching device 3 decides according to the resistance value of variable resistance 13.
In light modulating device 10, changed the resistance value of variable resistance 13 by operation aforesaid operations portion.In other words, in light modulating device 10, carried out the size of the angle of flow of alternation switch device 3 by operation aforesaid operations portion.
Control part 8 is configured to the drive singal (pwm signal (hereinafter referred to as " 1PWM signal ")) of output switch apparatus 3.Tables of data (hereinafter referred to as " the 1st tables of data ") is stored in the 1st memory of the 1st microcomputer as control part 8.1st tables of data is the magnitude of voltage of the 2nd direct voltage V2 and the conducting duty ratio tables of data one to one of 1PWM signal.The conducting duty ratio of 1PWM signal is equivalent to the angle of flow of switching device 3.The conducting duty ratio of 1PWM signal is such as set to become large along with the magnitude of voltage of the 2nd direct voltage V2 and diminish.
In addition, control part 8 is configured to export the 1PWM signal with the conducting duty ratio corresponding with the magnitude of voltage of the 2nd direct voltage V2 to switching device 3 based on the 1st tables of data.In other words, control part 8 is configured to export the 1PWM signal with the conducting duty ratio corresponding with the angle of flow of the switching device 3 set by configuration part 6 to switching device 3.
Control part 8 is configured to be transfused to the above-mentioned synchronizing signal from synchronizing signal generating unit 9.Control part 8 decides rising and the decline (moment) of 1PWM signal based on the rising of above-mentioned synchronizing signal.In addition, about the rising of 1PWM signal, phase angle changes along with the 2nd direct voltage V2.Thus, control part 8 generates the 1PWM signal with the conducting duty ratio corresponding with the magnitude of voltage of the 2nd direct voltage V2.Control part 8 exports 1PWM signal to switching device 3.
Switching device 3 becomes conducting state or cut-off state based on the 1PWM signal exported from control part 8.
Below, the lamp device 22 of present embodiment is described.
As shown in Figure 1, the light source portion 21 that lamp device 22 is such as configured to make to possess multiple solid-state light emitting element 25 is lighted.Each solid-state light emitting element 25 is such as LED (LightEmittingDiode: light-emitting diode).The electrical connection of each solid-state light emitting element 25 is such as connected in series.In addition, lamp device 22 does not comprise light source portion 21 as structure important document.
The electrical connection of each solid-state light emitting element 25 is connected in series, but be not limited to this.The electrical connection of each solid-state light emitting element 25 also can be such as be connected in parallel.In addition, the electrical connection of each solid-state light emitting element 25 can also be such as to be connected in series and to be connected in parallel combined connection.The glow color of each solid-state light emitting element 25 is such as white, but is not defined in this color especially.Each solid-state light emitting element 25 is LED, but is not limited to this.Each solid-state light emitting element 25 also can be such as organic electroluminescent device.The number of solid-state light emitting element 25 is not limited to multiple, also can be one.
Lamp device 22 possesses pair of terminal 42A, 42B, filter circuit 32, rectification circuit (hereinafter referred to as " the 1st rectification circuit ") 33, power conversion circuit 34, control circuit 38, rectification circuit (hereinafter referred to as " the 2nd rectification circuit ") 36, testing circuit 35 and decision circuitry 41.In addition, below for convenience of explanation, sometimes also the terminal 42A in pair of terminal 42A, 42B is called " the 1st input terminal 42A ", terminal 42B is called " the 2nd input terminal 42B ".
The series circuit of AC power 40 and light modulating device 10 can be electrically connected between pair of terminal 42A, 42B.In addition, lamp device 22 does not comprise AC power 40 and light modulating device 10 is used as constitutive requirements.
Filter circuit 32 is configured to remove common-mode noise and common-mode noise.Filter circuit 32 such as possesses capacitor (hereinafter referred to as " the 4th capacitor ") C4 and two inductor L2, L3.In addition, below for convenience of explanation, sometimes also the inductor L2 in two inductors L2, L3 is called " the 2nd inductor L2 ", inductor L3 is called " the 3rd inductor L3 ".
4th capacitor C4 is connected electrically between pair of terminal 42A, 42B.1st end of the 2nd inductor L2 is electrically connected with the 1st input terminal 42A.2nd end of the 2nd inductor L2 is electrically connected with the 1st rectification circuit 33.1st end of the 3rd inductor L3 is electrically connected with the 2nd input terminal 42B.2nd end of the 3rd inductor L3 is electrically connected with the 1st rectification circuit 33.2nd inductor L2 and the 3rd inductor L3 carries out magnetic couplings each other.
Filter circuit 32 such as will be superimposed on the noise of the power line of AC power 40, the removal such as noise to space radiation.In addition, filter circuit 32 possesses the 4th capacitor C4 and two inductor L2, L3, but is not defined in this structure especially.
1st rectification circuit 33 is configured to carry out full-wave rectification to the alternating voltage from AC power 40.In other words, the 1st rectification circuit 33 is configured to carry out full-wave rectification to the phase control voltage (carrying out the alternating voltage from AC power 40 after phase control by light modulating device 10) from light modulating device 10.1st rectification circuit 33 is such as diode bridge.
An input (input of hot side) in a pair input of the 1st rectification circuit 33 (diode bridge) is electrically connected with the 2nd end of the 2nd inductor L2.Another input (input of low potential side) in above-mentioned a pair input of the 1st rectification circuit 33 (diode bridge) is electrically connected with the 2nd end of the 3rd inductor L3.The pair of output of the 1st rectification circuit 33 (diode bridge) is electrically connected with power conversion circuit 34.
Power conversion circuit 34 is configured to be carried out the direct current that the voltage transitions after full-wave rectification is regulation by the 1st rectification circuit 33.Power conversion circuit 34 is such as the flyback converter of insulated type.Power conversion circuit 34 possesses capacitor (hereinafter referred to as " the 5th capacitor ") C5, switch element (hereinafter referred to as " the 1st switch element ") Q1, transformer T1, diode (hereinafter referred to as " the 3rd diode ") D3 and capacitor (hereinafter referred to as " the 6th capacitor ") C6.1st switch element Q1 is such as npn transistor npn npn.Transformer T1 possesses the primary coil N1 and secondary coil N2 that carry out magnetic couplings each other.
5th capacitor C5 is connected electrically between the pair of output as the above-mentioned diode bridge of the 1st rectification circuit 33.
1st main terminal (being collector terminal in the present embodiment) of the 1st switch element Q1 is electrically connected with the terminal of the hot side of the 5th capacitor C5 via primary coil N1.2nd main terminal (being emitter terminal in the present embodiment) of the 1st switch element Q1 is electrically connected with the terminal of the low potential side of the 5th capacitor C5.The control terminal (being base terminal in the present embodiment) of the 1st switch element Q1 is electrically connected with control circuit 38.
1st end of secondary coil N2 is connected with the negative electricity of the 3rd diode D3.The positive pole of the 3rd diode D3 is electrically connected with the terminal of the hot side of the 6th capacitor C6.The terminal of the low potential side of the 6th capacitor C6 is electrically connected with the 2nd end of secondary coil N2.2nd end of secondary coil N2 is electrically connected with the terminal of the low potential side of the 5th capacitor C5.
In addition, it is the direct current that the direct current of regulation obtains that power conversion circuit 34 is configured to export by the voltage transitions after carrying out full-wave rectification by the 1st rectification circuit 33, but is not limited to this structure.It is the direct voltage that the direct voltage of regulation obtains that power conversion circuit 34 such as also can be configured to export by the voltage transitions after carrying out full-wave rectification by the 1st rectification circuit 33.In addition, the 1st switch element Q1 is npn transistor npn npn, but is not limited to this.1st switch element Q1 also can be such as n channel mosfet.
Light source portion 21 can be electrically connected between the two ends of the 6th capacitor C6.Thus, in lamp device 22, when the both end voltage of the 6th capacitor C6 is more than the forward voltage of the total of each solid-state light emitting element 25, light source portion 21 is lighted.
Control circuit 38 is configured to control power conversion circuit 34.If specifically described, control circuit 38 is configured to control the 1st switch element Q1.
Control circuit 38 is such as the microcomputer (hereinafter referred to as " the 2nd microcomputer ") being provided with program (hereinafter referred to as " the 2nd program ").2nd program is such as stored in the memory (hereinafter referred to as " the 2nd memory ") being pre-set at the 2nd microcomputer.In addition, in lamp device 22, use the 2nd microcomputer to be used as control circuit 38, but be not limited to this.Control circuit 38 also can be such as control IC (the 2nd control IC).
2nd rectification circuit 36 is configured to carry out full-wave rectification to phase control voltage.In other words, the 2nd rectification circuit 36 is configured to carry out full-wave rectification to the phase control voltage from light modulating device 10.2nd rectification circuit 36 such as possesses two diodes D4, D5.In addition, below for convenience of explanation, sometimes also the diode D4 in diode D4, D5 is called " the 4th diode D4 ", diode D5 is called " the 5th diode D5 ".
The negative pole of the 4th diode D4 is electrically connected with the 2nd end of the 2nd inductor L2.The positive pole of the 4th diode D4 is electrically connected with testing circuit 35.The negative pole of the 5th diode D5 is electrically connected with the 2nd end of the 3rd inductor L3.The positive pole of the 5th diode D5 is electrically connected with testing circuit 35.
Testing circuit 35 is configured to detect and carries out the voltage after full-wave rectification by the 2nd rectification circuit 36.Testing circuit 35 is such as resistor voltage divider circuit.Resistor voltage divider circuit is such as the series circuit of two resistance (the 1st resistance and the 2nd resistance).1st end of the 1st resistance is electrically connected with the 4th diode D4 and the 5th diode D5 positive pole separately.2nd end of the 1st resistance is electrically connected with the 1st end of the 2nd resistance.2nd end of the 2nd resistance is electrically connected with the ground end of lamp device 22.2nd end of the 1st resistance and the 1st both ends of the 2nd resistance are electrically connected with control circuit 38.
Control circuit 38 possesses decision circuitry 41.Decision circuitry 41 is configured to be transfused to the voltage V3 (with reference to Fig. 4) detected by testing circuit 35.The voltage V3 detected by testing circuit 35 is equivalent to the both end voltage of above-mentioned 2nd resistance.The V4 of the longitudinal axis in Fig. 4 represents the voltage (with reference to Fig. 1) applied between a pair input to the filter circuit 32 in lamp device 22.The V5 of the longitudinal axis in Fig. 4 represents the both end voltage (with reference to Fig. 3) of the 3rd capacitor C3 in the rectifier smoothing circuit 11 of light modulating device 10.The t of each transverse axis in Fig. 4 represents the time.In addition, below for convenience of explanation, voltage V3 is called " detecting voltage V3 ".
Decision circuitry 41 is configured to be transfused to and detects voltage V3, but is not limited to this structure.Decision circuitry 41 such as also can be configured to be transfused to the detection voltage V3 after removing high-frequency noise.In this case, in control circuit 38, the input side of decision circuitry 41 is provided with the filter for removing high-frequency noise.Above-mentioned filter is such as digital filter.The digital signal that digital filter is such as configured to obtain detection voltage V3 is carried out analog/digital conversion carries out rolling average computing.In addition, so-called rolling average, refers to simple rolling average.
Decision circuitry 41 is configured to light until detect during voltage V3 is reduced to the time point of threshold value (hereinafter referred to as " the 2nd the threshold value ") Vs2 (reference Fig. 5) preset and detect from detecting the voltage V3 time larger than the threshold value preset (hereinafter referred to as " the 1st threshold value ") Vs1 (with reference to Fig. 5).In addition, decision circuitry 41 is configured to judge that whether above-mentioned period is the size (size of the phase place of the alternating voltage after phase control) of the phase place detecting voltage V3.1st threshold value Vs1 is such as set to larger than the 2nd threshold value Vs2.Detect the angle of flow of the switching device 3 of sizableness in light modulating device 10 of the phase place of voltage V3.In other words, the sizableness of the phase place of voltage V3 is detected in the light modulation ratio of the light output of decision light source portion 21.That is, decision circuitry 41 be configured to judge above-mentioned period whether can be considered as corresponding with the angle of flow of switching device 3 during.1st threshold value Vs1 and the 2nd threshold value Vs2 is stored in above-mentioned 2nd memory respectively.The V3 of the longitudinal axis in Fig. 5 represents detection voltage.The t of the transverse axis in Fig. 5 represents the time.T in Fig. 5 represents the one-period (being equivalent to the length of the half period of the alternating voltage of AC power 40) detecting voltage V3.
1st threshold value Vs1 is set to larger than the 2nd threshold value Vs2, but is not limited to this.1st threshold value Vs1 such as also can be set to the size identical with the 2nd threshold value Vs2.
In addition, in lamp device 22, such as, when being superimposed with the noise of the size not having filtered device circuit 32 to remove completely on the power line of the zero crossing time point AC power 40 of the alternating voltage in AC power 40, the size of the phase place of the detection voltage V3 detected by testing circuit 35 likely changes.
Present inventor thinks, such as, when the size variation of the phase place of the detection voltage detected by testing circuit in lamp device, decision circuitry often judges the light modulation ratio of the light output determining light source portion mistakenly.Namely, present inventor thinks, after decision circuitry is merely configured to that detection voltage drop is low to moderate the 2nd threshold value, the time point larger than the 1st threshold value is judged as the sart point in time of the angle of flow of switching device, decision circuitry often judges the light modulation ratio of the light output determining light source portion mistakenly.In addition, present inventor obtains following opinion: the example that the size as the phase place detecting voltage V3 changes, and as shown in Figure 5, the size Ta, the Tb that detect the phase place of voltage V3 often alternately change for different values.
Decision circuitry 41 is configured to as shown in Figure 5, when the 1st period Tb detected as above-mentioned period than the 2nd period Ta detected as above-mentioned period before detection the 1st period Tb in short-term, be judged as that the 1st period Tb is the size of the phase place detecting voltage V3.In other words, decision circuitry 41 is configured to, and when period, Tb was long than the detected as above-mentioned period before detection the 2nd period Ta the 1st for the 2nd period Ta detected as above-mentioned period, is judged as that the 1st period Tb is the size of the phase place detecting voltage V3.Such as in the example of fig. 5, decision circuitry 41 is configured to, when repeatedly detect as above-mentioned period as the 1st period Tb during relatively short with as relative long during the 2nd period Ta, be judged as it being the size of the phase place detecting voltage V3 as the 1st period Tb during relatively short.
When being judged as that by decision circuitry 41 the 1st period Tb is the size of the phase place detecting voltage V3, control circuit 38 controls the 1st switch element Q1 based on the 1st period Tb of the size being judged as being the phase place detecting voltage V3.In the one-period detecting voltage V3, such as detect the 1st period Tb as above-mentioned period, when detecting the 2nd period Ta as above-mentioned period in next cycle, just detect the cycle of the 2nd period Ta as above-mentioned period, control circuit 38 also uses the 1st period Tb to control the 1st switch element Q1 as the size of the phase place detecting voltage V3.Thus, lamp device 22 can suppress the error detection of light modulation ratio, and this light modulation is than the light output determining light source portion 21.In addition, in lamp device 22, judge that with not utilizing decision circuitry 41 whether above-mentioned period is compared with the situation of the size of the phase place detecting voltage V3, can suppress the optical flare radiated from light source portion 21.
Control circuit 38 is configured to output pwm signal (hereinafter referred to as " 2PWM signal ").Tables of data (hereinafter referred to as " the 2nd tables of data ") is stored in the 2nd memory of the 2nd microcomputer as control circuit 38.2nd tables of data detects the size of phase place and the conducting duty ratio tables of data one to one of 2PWM signal of voltage V3.The conducting duty ratio of 2PWM signal is equivalent to the conduction period of the 1st switch element Q1.In other words, the conducting duty ratio of 2PWM signal is equivalent to the light modulation ratio of light source portion 21.The conducting duty ratio of 2PWM signal is set to become large along with the size of the phase place detecting voltage V3 and become large.
In addition, control circuit 38 is configured to export 2PWM signal to the 1st switch element Q1, and this 2PWM signal has the conducting duty ratio corresponding with the 1st period Tb being judged as YES the size of the phase place detecting voltage V3 based on the 2nd tables of data.Thus, light modulation can be carried out to light source portion 21 in lamp device 22.
Decision circuitry 41 is configured to, when the 1st period Tb than the 2nd period Ta in short-term, be judged as that the 1st period Tb is the size of the phase place detecting voltage V3, but be not limited to this structure.
Such as, the voltage V3 that decision circuitry 41 also can be configured to from being detected by testing circuit 35 extracts sampled value out successively.In addition, decision circuitry 41 can also be configured to as shown in Figure 6, when as above-mentioned sampled value when the 1st sampled value S1 that this is extracted out is more than prespecified setting with the difference W1 of the 2nd sampled value S2 extracted out in last time as above-mentioned sampled value, the time point of extraction the 1st sampled value S1 is judged as the switching device 3 of light modulating device 10 becomes the time point of conducting state from cut-off state, and be judged as lighting until detect the size that Tc during voltage V3 is the time point of below the 2nd threshold value Vs2 (with reference to Fig. 6) is the phase place detecting voltage V3 from the time of extraction the 1st sampled value S1.Setting is stored in above-mentioned 2nd memory.Setting is such as preferably set to more than 1V and is less than the value in the scope of 2V.The V3 of the longitudinal axis in Fig. 6 represents detection voltage.The t of the transverse axis in Fig. 6 represents the time.T in Fig. 6 represents the one-period detecting voltage V3.Black circle in Fig. 6 represents above-mentioned sampled value.Decision circuitry 41 such as obtains sampled value with predetermined time interval from detection voltage V3 successively.In one example, decision circuitry 41 is being lighted from the time detecting voltage V3 and be reduced to the 2nd threshold value Vs2 until during being judged as that switching device 3 to become the time point of conducting state from cut-off state, obtain sampled value with predetermined time interval successively from detection voltage V3.The time interval that decision circuitry 41 extracts multiple sampled value is such as set to several 10 μ s.
In addition, in another example, the magnitude of voltage (detect and detect the magnitude of voltage that voltage V3 reaches the detection voltage V3 of the time point of the 1st threshold value Vs1) that decision circuitry 41 also can be configured to reach detection voltage V3 the time point of the 1st threshold value Vs1 detects.In addition, decision circuitry 41 can also be configured to, when above-mentioned magnitude of voltage (detect and detect the magnitude of voltage that voltage V3 reaches the detection voltage V3 of the time point of the 1st threshold value Vs1) for preset more than threshold value (hereinafter referred to as " the 3rd threshold value ") Vs3 (with reference to Fig. 7) time, the time point (detect and detect the time point that voltage V3 reaches the 1st threshold value Vs1) reaching the 1st threshold value Vs1 is judged as the switching device 3 of light modulating device 10 becomes the time point of conducting state from cut-off state, and be judged as that the time being greater than the 1st threshold value Vs1 from detection voltage V3 lights until detect the size that Td during voltage V3 is reduced to the time point of the 2nd threshold value Vs2 (with reference to Fig. 7) is the phase place detecting voltage V3.In this case, the 3rd threshold value Vs3 is such as set to larger than the 1st threshold value Vs1.That is, when the magnitude of voltage that detection voltage V3 reaches the detection voltage V3 of the time point of the 1st threshold value Vs1 is more than 3rd threshold value Vs3 (> the 1st threshold value Vs1), the time point of time point (Da Dao ≒ the 3rd threshold value Vs3 of the 1st threshold value Vs1 is reached at detection voltage V3) near, detecting voltage V3 sharply increases (such as with reference to second crest of the waveform of Fig. 7).Thus, the switching device 3 that the time point that this detection voltage V3 sharply can be increased (detecting the time point that voltage V3 reaches the 1st threshold value Vs1) is considered as light modulating device 10 becomes the time point of conducting state from cut-off state.In addition, the 3rd threshold value Vs3 is stored in above-mentioned 2nd memory.The V3 of the longitudinal axis in Fig. 7 represents detection voltage.The t of the transverse axis in Fig. 7 represents the time.T in Fig. 7 represents the one-period detecting voltage V3.
In addition, the magnitude of voltage that decision circuitry 41 is configured to reach detection voltage V3 the time point of the 1st threshold value Vs1 detects, but is not defined in this structure especially.Decision circuitry 41 such as also can be configured to detect being close to the magnitude of voltage detecting the time point that voltage V3 reaches after the time point of the 1st threshold value Vs1.So-called detection is close to voltage V3 and reaches time point after the time point of the 1st threshold value Vs1, such as, refer to the time point detected after voltage V3 reaches the time point of the 1st threshold value Vs1 within several 10 μ s.
In addition, control circuit 38 possesses decision circuitry 41, but is not limited to this.Decision circuitry 41 such as also can be arranged with control circuit 38 dividually.
The lamp device 22 of present embodiment described above is the lamp device 22 that the light source portion 21 possessing solid-state light emitting element 25 is lighted.Lamp device 22 possesses pair of terminal 42A, 42B, the 1st rectification circuit 33, power conversion circuit 34, control circuit 38, the 2nd rectification circuit 36, testing circuit 35 and decision circuitry 41.1st rectification circuit 33 is configured to the alternating voltage after to phase control and carries out full-wave rectification.It is the direct voltage of regulation or the direct current of regulation that power conversion circuit 34 is configured to being carried out the voltage transitions after full-wave rectification by the 1st rectification circuit 33.Control circuit 38 is configured to control power conversion circuit 34.2nd rectification circuit 36 is configured to the alternating voltage after to above-mentioned phase control and carries out full-wave rectification.Testing circuit 35 is configured to detect and carries out the voltage after full-wave rectification by the 2nd rectification circuit 36.Decision circuitry 41 is configured to, the time being greater than the 1st threshold value Vs1 preset from the voltage V3 detected by testing circuit 35 is lighted until the voltage V3 that detected by testing circuit 35 detects during being reduced to the time point of the 2nd threshold value Vs2 preset, and judge that whether above-mentioned period is the size of the phase place of the voltage V3 detected by testing circuit 35.1st rectification circuit 33 and the 2nd rectification circuit 36 are configured to, and when the series circuit of AC power 40 and light modulating device 10 is connected between pair of terminal 42A, 42B, carry out full-wave rectification to the alternating voltage after above-mentioned phase control.Power conversion circuit 34 possesses switch element (the 1st switch element) Q1.Control circuit 38 is configured to, when being judged as that above-mentioned period is the size of above-mentioned phase place by decision circuitry 41, based on the above-mentioned period control switch element Q1 of size being judged as being above-mentioned phase place.Thus, can suppress the error detection of light modulation ratio in lamp device 22, light modulation is than the light output determining light source portion 21.
Lamp device 22 preferably also possesses the filter circuit 32 be connected between pair of terminal 42A, 42B.Filter circuit 32 is preferably arranged on the 1st rectification circuit 33 and the respective input side of the 2nd rectification circuit 36.Thus, can the generation of restraint speckle in lamp device 22.Thus, can suppress the error detection of light modulation ratio in lamp device 22 further, this light modulation is than the light output determining light source portion 21.
Decision circuitry 41 is preferably configured to, and when as above-mentioned period at this 1st period Tb detected than the 2nd period Ta detected in last time as above-mentioned period in short-term, is judged as that the 1st period Tb is the size of above-mentioned phase place.Thus, can suppress the error detection of light modulation ratio in lamp device 22, this light modulation is than the light output determining light source portion 21.
The voltage V3 that decision circuitry 41 is preferably configured to from being detected by testing circuit 35 extracts sampled value out successively.In addition, decision circuitry 41 is preferably configured to, when as above-mentioned sampled value when the 1st sampled value S1 that this is extracted out is more than prespecified setting with the difference W1 of the 2nd sampled value S2 extracted out in last time as above-mentioned sampled value, the switching device 3 being judged as the time point of extraction the 1st sampled value S1 to be pre-set at light modulating device 10 becomes the time point of conducting state from cut-off state, and be judged as from the time of extraction the 1st sampled value S1 light until the voltage that detected by testing circuit 35 be the time point of below the 2nd threshold value Vs2 during Tc be the size of above-mentioned phase place.Thus, can suppress the error detection of light modulation ratio in lamp device 22, this light modulation is than the light output determining light source portion 21.
The magnitude of voltage that decision circuitry 41 is preferably configured to reach the voltage V3 detected by testing circuit 35 time point of the 1st threshold value Vs1 detects.In addition, decision circuitry 41 is preferably configured to, when detected above-mentioned magnitude of voltage is more than the 3rd threshold value Vs3 being greater than the 1st threshold value Vs1, the switching device 3 being judged as the time point reaching the 1st threshold value Vs1 to be pre-set at light modulating device 10 becomes the time point of conducting state from cut-off state.In addition, decision circuitry 41 is preferably configured to, be judged as the time being greater than the 1st threshold value Vs1 from the voltage V3 detected by testing circuit 35 light until the voltage V3 that detected by testing circuit 35 be reduced to the time point of the 2nd threshold value Vs2 during Td be the size of above-mentioned phase place.Thus, can suppress the error detection of light modulation ratio in lamp device 22, this light modulation is than the light output determining light source portion 21.
Above-mentioned 1st threshold value Vs1 is preferably set to above-mentioned more than 2nd threshold value Vs2.
Below, the ligthing paraphernalia 20 of present embodiment is described based on Fig. 8.
Ligthing paraphernalia 20 is such as configured to directly be installed on ceiling component 50.Ligthing paraphernalia 20 possesses light source portion 21, lamp device 22, appliance body 23 and diffusion part 24.In addition, in Fig. 1 ~ Fig. 3, eliminate appliance body 23 and the respective diagram of diffusion part 24.
Light source portion 21 possesses multiple solid-state light emitting element 25 and substrate 26.Substrate 26 is such as printed circuit board (PCB).1st (being lower surface in fig. 8) of substrate 26 there is multiple solid-state light emitting element 25 with electric connection mode actual installation.Multiple solid-state light emitting element 25 such as by the imaginary circles that is equally spaced configured in the 1st of substrate 26 circumferentially.
Lamp device 22 is such as electrically connected with substrate 26 via a pair electric wire (the 1st connecting line).In addition, lamp device 22 is such as configured to a pair electric wire (the 2nd connecting line 27A, 27B) to be electrically connected.A pair the 2nd connecting lines 27A, 27B are such as a pair electric wires of deriving from the hole being pre-set at ceiling component 50 (the 1st hole) 51.
Such as via the 2nd connecting line 27A, AC power 40 (with reference to Fig. 3) can be electrically connected on lamp device 22.In addition, such as via the 2nd connecting line 27B, light modulating device 10 (with reference to Fig. 3) can be electrically connected on lamp device 22.
Appliance body 23 is configured to be separately installed with light source portion 21 and lamp device 22.Appliance body 23 possesses main part 28 and flange part 29.The material of appliance body 23 is such as metal.As metal, such as, can enumerate aluminium, stainless steel, iron etc.
Main part 28 is such as formed as bottomed cylindrical.The hole (the 2nd hole) for making a pair the 2nd connecting lines 27A, 27B pass is formed at the diapire of main part 28.The end that flange part 29 is configured to the open side (being downside in fig. 8) of the sidewall from main part 28 is externally given prominence to.In addition, flange part 29 and main part 28 are formed integratedly.In addition, main part 28 is formed as bottomed cylindrical, but is not limited to this shape.Main part 28 such as also can be formed as base angle tubular.
Appliance body 23 is configured to be separately installed with light source portion 21 and lamp device 22, but is not limited to this.Appliance body 23 such as also can be configured to only install light source portion 21.In this case, lamp device 22 is preferably arranged on the 1st side (being upper surface side in fig. 8) of ceiling component 50.Thus, the heat transfer produced by lamp device 22 can be suppressed in ligthing paraphernalia 20 to light source portion 21, the deterioration of light source portion 21 can be suppressed.In addition, the heat transfer produced by light source portion 21 can be suppressed in ligthing paraphernalia 20 to lamp device 22, the deterioration of the multiple electronic units forming lamp device 22 can be suppressed.
Diffusion part 24 is configured to the light diffusion making to radiate from each solid-state light emitting element 25.In addition, diffusion part 24 is configured to the flange part 29 being installed on appliance body 23.The material of diffusion part 24 is such as translucent material.As translucent material, such as, acrylic resin, glass etc. can be enumerated.
In addition, the ligthing paraphernalia 20 of present embodiment possesses leadage circuit 31 (with reference to Fig. 1 ~ Fig. 3).Leadage circuit 31 is electrically connected with parallel way with the lighting load 19 comprising light source portion 21 and lamp device 22 as shown in Figure 3.In addition, the diagram of leadage circuit 31 is eliminated in fig. 8.
As shown in Figure 2, leadage circuit 31 possesses switch element (hereinafter referred to as " the 2nd switch element ") Q2, the series circuit of multiple (being two in the present embodiment) resistance R1, R2 and Zener diode ZD1.
2nd switch element Q2 is such as the n channel mosfet of normal cut-off type.1st main terminal (being drain terminal in the present embodiment) of the 2nd switch element Q2 is electrically connected with the 4th diode D4 and the 5th diode D5 positive pole separately.2nd main terminal (being source terminal in the present embodiment) of the 2nd switch element Q2 is electrically connected with the 1st end of resistance R1.2nd end of resistance R1 is electrically connected with the 1st end of resistance R2.2nd end of resistance R2 is electrically connected with the output of the low potential side in the pair of output of the above-mentioned diode bridge as the 1st rectification circuit 33.The control terminal (being gate terminal in the present embodiment) of the 2nd switch element Q2 is electrically connected with control circuit 38.
The negative pole of Zener diode ZD1 is electrically connected with the 2nd end of resistance R2.The positive pole of Zener diode ZD1 is electrically connected with the gate terminal of the 2nd switch element Q2.
Leadage circuit 31 is configured to, when the switching device 3 of light modulating device 10 is cut-off state (when the size of the alternating voltage of AC power 40 is below the threshold value of regulation), flow out electric current (hereinafter referred to as " leakage current ") Ib from AC power 40, and export leakage current Ib to the power circuit 5 of light modulating device 10.If specifically described, then control circuit 38 is configured to when switching device 3 is conducting state for making the 2nd switch element Q2 during cut-off state.Thus, when switching device 3 is cut-off state, leadage circuit 31 can export leakage current Ib via the 2nd diode D2 of light modulating device 10 to the 3rd capacitor C3.In other words, when switching device 3 is cut-off state, leadage circuit 31 can export leakage current Ib to the power circuit 5 of light modulating device 10.That is, leadage circuit 31 is configured to generate the by-pass current being supply source with AC power 40.In a word, the ligthing paraphernalia 20 of present embodiment possesses leadage circuit 31, this leadage circuit 31 and lighting load 19 are connected in parallel, and when the size of the alternating voltage from AC power 40 is below threshold value, generates with AC power 40 by-pass current that is supply source and export to light modulating device 10.
In addition, present inventor obtains following opinion: in illuminator 30, when switching device 3 is cut-off state, leakage current Ib flows to the power circuit 5 of light modulating device 10 from AC power 40 via leadage circuit 31, therefore the both end voltage V5 of the 3rd capacitor C3 rises (with reference to Fig. 4).Thus, in illuminator 30, when switching device 3 is cut-off state, can charge to the 3rd capacitor C3 of light modulating device 10, the 1st direct voltage V1 stabilisation being supplied to control circuit 4 from power circuit 5 can be made.Thus, the having stable behavior of control circuit 4 can be made in illuminator 30.
In addition, present inventor obtains following opinion: in illuminator 30, when flowing through leakage current Ib in the leadage circuit 31 at ligthing paraphernalia 20, the size of the phase place of the detection voltage V3 detected by the testing circuit 35 of lamp device 22 often changes (with reference to Fig. 4 and Fig. 5).If illustrated in more detail, then present inventor obtains following opinion: in illuminator 30, when flowing through leakage current Ib in the leadage circuit 31 at ligthing paraphernalia 20 and the angle of flow hour of the switching device 3 of light modulating device 10, detect the rising edge of voltage V3 often periodically significantly crooked (with reference to Fig. 4 and Fig. 5).In addition, in the illuminator 30 of present embodiment, rectifier smoothing circuit 11 possesses the 2nd diode D2, therefore only produces leakage current Ib every the positive half period of the alternating voltage of AC power 40.In addition, present inventor thinks, in lamp device 22, when the angle of flow hour of switching device 3, if detect the size change of the phase place of voltage V3, then from the bright explict occurrence flicker that light source portion 21 is radiated.
As above-mentioned also illustrated, when the 1st period Tb detected as above-mentioned period than the 2nd period Ta detected as above-mentioned period before detection the 1st period Tb in short-term, decision circuitry 41 is judged as that the 1st period Tb is the size of the phase place detecting voltage V3.Thus, lamp device 22 can suppress the error detection of light modulation ratio, and this light modulation is than the light output determining light source portion 21.Thus, in lamp device 22, can at the optical flare of the angle of flow of switching device 3 hour suppression from light source portion 21 radiation.
In addition, the control circuit 38 in lamp device 22 is configured to when switching device 3 is cut-off state for making the 2nd switch element Q2 during conducting state.Thus, ligthing paraphernalia 20 electric power that light source portion 21 can be made to light or make control circuit 38 to carry out needed for action to lamp device 22 supply.In addition, the 2nd switch element Q2 in the leadage circuit 31 of ligthing paraphernalia 20 is cut-off state, therefore, it is possible to suppress the power consumption in leadage circuit 31.
Ligthing paraphernalia 20 possesses the unit having received the module substrate with leadage circuit 31.So-called module substrate, refers to the substrate for being installed with electric connection mode by the multiple electronic units forming leadage circuit 31.
Said units both can be configured to be installed on appliance body 23, also can be configured to the 1st side (being upper surface side in fig. 8) being arranged on ceiling component 50.
In addition, ligthing paraphernalia 20 possesses leadage circuit 31, but is not defined in this especially, also can not possess leadage circuit 31.
The lamp device 22 that the ligthing paraphernalia 20 of present embodiment described above possesses light source portion 21, light source portion 21 is lighted and the appliance body 23 being provided with light source portion 21.Thereby, it is possible to provide following a kind of ligthing paraphernalia 20: the lamp device 22 possessing the error detection that can suppress light modulation ratio in ligthing paraphernalia 20, this light modulation is than the light output determining light source portion 21.
Ligthing paraphernalia 20 preferably also possesses leadage circuit 31, and this leadage circuit 31 is connected in parallel with the lighting load 19 comprising light source portion 21 and lamp device 22.Thus, in ligthing paraphernalia 20, AC power 40 is electrically connected with the series circuit of light modulating device 10, and when switching device 3 is cut-off state, the current Ib from AC power 40 can be made to shunt to light modulating device 10.
Claims (8)
1. a lamp device, makes the light source portion possessing solid-state light emitting element light, it is characterized in that possessing:
Pair of terminal;
1st rectification circuit, consists of the alternating voltage after to phase control and carries out full-wave rectification;
Power conversion circuit, consisting of being carried out the voltage transitions after full-wave rectification by above-mentioned 1st rectification circuit is the direct voltage of regulation or the direct current of regulation;
Control circuit, consists of and controls above-mentioned power conversion circuit;
2nd rectification circuit, consists of the alternating voltage after to above-mentioned phase control and carries out full-wave rectification;
Testing circuit, consists of to detect and carries out the voltage after full-wave rectification by above-mentioned 2nd rectification circuit; And
Decision circuitry,
Wherein, above-mentioned decision circuitry is configured to, the time large to the 1st threshold value preset from the voltage ratio detected by above-mentioned testing circuit lights until the voltage drop that detected by above-mentioned testing circuit detects during being low to moderate the time point of the 2nd threshold value preset, and judge that whether above-mentioned period is the size of the phase place of the voltage detected by above-mentioned testing circuit
Above-mentioned 1st rectification circuit and above-mentioned 2nd rectification circuit are configured to, and when the series circuit of AC power and light modulating device is connected between above-mentioned pair of terminal, carry out full-wave rectification to the alternating voltage after above-mentioned phase control,
Above-mentioned power conversion circuit possesses switch element,
Above-mentioned control circuit is configured to, and when being judged as that above-mentioned period is the size of above-mentioned phase place by above-mentioned decision circuitry, the above-mentioned period based on the size being judged as being above-mentioned phase place controls above-mentioned switch element.
2. lamp device according to claim 1, is characterized in that,
Above-mentioned lamp device also possesses the filter circuit be connected between above-mentioned pair of terminal,
Above-mentioned filter circuit is arranged on above-mentioned 1st rectification circuit and above-mentioned 2nd rectification circuit input side separately.
3. lamp device according to claim 1 and 2, is characterized in that,
Above-mentioned decision circuitry is configured to, when as above-mentioned period this detect the 1st during than as above-mentioned period last time detect the 2nd during in short-term, be judged as it being the size of above-mentioned phase place during the above-mentioned 1st.
4. lamp device according to claim 1 and 2, is characterized in that,
The voltage that above-mentioned decision circuitry is configured to from being detected by above-mentioned testing circuit extracts sampled value out successively,
Above-mentioned decision circuitry is configured to, when as above-mentioned sampled value when the 1st sampled value that this is extracted out is more than prespecified setting with the difference of the 2nd sampled value of extracting out in last time as above-mentioned sampled value, to switching device that the time point of above-mentioned 1st sampled value is judged as being pre-set at above-mentioned light modulating device be extracted out become from cut-off state the time point of conducting state, and be judged as lighting until the voltage that detected by above-mentioned testing circuit is the size of above-mentioned phase place during being the time point of below above-mentioned 2nd threshold value from the time of extracting above-mentioned 1st sampled value out.
5. lamp device according to claim 1 and 2, is characterized in that,
The magnitude of voltage that above-mentioned decision circuitry is configured to reach the voltage detected by above-mentioned testing circuit the time point of above-mentioned 1st threshold value detects,
Above-mentioned decision circuitry is configured to, time more than the 3rd threshold value that detected above-mentioned magnitude of voltage is larger than above-mentioned 1st threshold value, the switching device time point reaching above-mentioned 1st threshold value being judged as being pre-set at above-mentioned light modulating device becomes the time point of conducting state from cut-off state, and is judged as lighting until the voltage drop that detected by above-mentioned testing circuit is the size of above-mentioned phase place during being low to moderate the time point of above-mentioned 2nd threshold value from the time that above-mentioned 1st threshold value of the voltage ratio detected by above-mentioned testing circuit is large.
6. lamp device according to claim 1, is characterized in that,
Above-mentioned 1st threshold value is set to more than above-mentioned 2nd threshold value.
7. a ligthing paraphernalia, is characterized in that, possesses:
Light source portion;
Lamp device according to any one in claim 1 to 6, it makes above-mentioned light source portion light; And
Appliance body, for installing above-mentioned light source portion.
8. ligthing paraphernalia according to claim 7, is characterized in that,
Also possess leadage circuit, this leadage circuit is connected to the lighting load comprising above-mentioned light source portion and above-mentioned lamp device in parallel.
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| JP2014086751A JP6278314B2 (en) | 2014-04-18 | 2014-04-18 | Lighting device and lighting apparatus using the same |
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