CN202077223U - Non-constant voltage type light-emitting system - Google Patents
Non-constant voltage type light-emitting system Download PDFInfo
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- CN202077223U CN202077223U CN2011200755380U CN201120075538U CN202077223U CN 202077223 U CN202077223 U CN 202077223U CN 2011200755380 U CN2011200755380 U CN 2011200755380U CN 201120075538 U CN201120075538 U CN 201120075538U CN 202077223 U CN202077223 U CN 202077223U
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Abstract
A non-constant voltage type light-emitting system comprises a light-emitting unit and a driving unit, and the driving unit is electrically connected with a power supply, and converts the voltage inputted by the power supply in order to generate a driving voltage which can be transformed to be higher than or lower than a critical voltage. The light-emitting unit comprises at least one light-emitting diode, the light-emitting unit is electrically connected with the driving unit to receive the driving voltage, and is switched between a light-emitting state and a non-light-emitting state according to whether the driving voltage is higher than the critical voltage or not, thereby the light-emitting unit can be switched between the light-emitting state and the non-light-emitting state, consequently, the heat accumulated by the light-emitting unit can be reduced, so that the service life of the light-emitting unit can be prolonged, and moreover, the electricity consumption of the light-emitting unit can be reduced.
Description
Technical field
The utility model relates to a kind of luminescent system, particularly relates to a kind of non-constant pressure type luminescent system.
Background technology
General luminescent system comprises a constant voltage driving device and at least one light-emitting component, this constant voltage driving device is electrically connected with a power supply and this light-emitting component, this constant voltage driving device provisioning electric power is given this light-emitting component, and the voltage that will export this light-emitting component to maintains constant voltage, make this light-emitting component remain on a luminance and luminous, but so following disappearance arranged:
Because the constant voltage driving device all is to export this light-emitting component to constant voltage, this light-emitting component whole process is in luminance, once elongating, the operating time will cause this light-emitting component to accumulate too much heat energy, make the aging or characteristic changing of this light-emitting component, and cause the operating efficiency of this light-emitting component to reduce gradually, and the lighter's brightness deepening, weight person also can make this luminescent device breakdown move, in addition, whole process this light-emitting component of being in luminance also can consume appreciable electric power.
The utility model content
First purpose of the present utility model promptly is electrically connected with an AC power providing a kind of, and can be at luminance and the non-constant pressure type luminescent system of not changing between luminance.
Second purpose of the present utility model promptly is electrically connected with a grid bias power supply providing a kind of, and can be at luminance and the non-constant pressure type luminescent system of not changing between luminance
So the non-constant pressure type luminescent system according to first purpose of the present utility model is provided comprises a drive unit and a light-emitting device.This drive unit is electrically connected on an AC power receiving an input voltage that is interchange, and with this input voltage change with produce one in greater than and less than a critical voltage between the driving voltage of conversion.This light-emitting device is electrically connected on this drive unit receiving this driving voltage, and whether is higher than this critical voltage according to this driving voltage, and does not change between luminance in a luminance and, and this light-emitting device comprises at least one light-emitting diode.
Non-constant pressure type luminescent system according to second purpose of the present utility model is provided comprises a drive unit and a light-emitting device.This drive unit is electrically connected on a grid bias power supply receiving a bias voltage that is direct current, and according to this bias voltage change with produce one in greater than and less than a critical voltage between the driving voltage of conversion.This light-emitting device is electrically connected on this drive unit receiving this driving voltage, and whether is higher than this critical voltage according to this driving voltage, and does not change between luminance in a luminance and, and this light-emitting device comprises at least one light-emitting diode.
The beneficial effects of the utility model are: this drive unit can make the driving voltage that exports this light-emitting device to greater than and less than the critical voltage of this light-emitting device between conversion, so, can make this light-emitting device can not maintain luminance fully, whereby, not only can save electric power, also can lower the heat of this light-emitting device accumulation, and prolong the service life of this light-emitting device.
Description of drawings
Fig. 1 is the circuit diagram of one first preferred embodiment of the non-constant pressure type luminescent system of the utility model;
Fig. 2 is the circuit diagram of one second preferred embodiment of the non-constant pressure type luminescent system of the utility model;
Fig. 3 is the circuit diagram of one the 3rd preferred embodiment of the non-constant pressure type luminescent system of the utility model;
Fig. 4 is the circuit diagram of one the 4th preferred embodiment of the non-constant pressure type luminescent system of the utility model;
Fig. 5 is the circuit diagram of one the 5th preferred embodiment of the non-constant pressure type luminescent system of the utility model;
Fig. 6 is the circuit diagram of one the 6th preferred embodiment of the non-constant pressure type luminescent system of the utility model;
Fig. 7 is the circuit diagram of one the 7th preferred embodiment of the non-constant pressure type luminescent system of the utility model;
Fig. 8 is the circuit diagram of one the 8th preferred embodiment of the non-constant pressure type luminescent system of the utility model.
Embodiment
Below in conjunction with drawings and Examples the utility model is elaborated:
Before the utility model is described in detail, be noted that in the following description content similar elements is to represent with identical Reference numeral.
＜the first preferred embodiment 〉
Consult Fig. 1, one first preferred embodiment of the non-constant pressure type luminescent system of the utility model comprises: a light-emitting device 1 and a drive unit 2.
This drive unit 2 is electrically connected on an AC power 100 (in the present embodiment, be general domestic power supply AC 220V/50Hz) receiving an input voltage that is interchange, and in an operation cycle, this input voltage changed with produce one in greater than and less than a critical voltage between conversion and be the driving voltage of positive phase.This light-emitting device 1 is electrically connected on this drive unit 2 to receive this driving voltage, and in this operation cycle, whether be higher than this critical voltage according to this driving voltage, and do not change between luminance in a luminance and, and this light-emitting device 1 comprises at least one light-emitting diode 11.
In the present embodiment, this drive unit 2 is the driving voltages that this input voltage conversion are the periodic wave of positive phase with generation, but be not limited thereto, also can be: this drive unit 2 results from this input voltage conversion greater than the driving voltage that reaches less than the aperiodic wave of conversion between this critical voltage, also identical effect can be arranged, difference only be this luminance and this not the conversion between luminance can not present the cycle form.In addition, when this drive unit 2 produces the driving voltage of minus phase waveform with the conversion of this input voltage, also can cooperate this luminous light-emitting device 1 of driving voltage of corresponding minus phase waveform and reach identical effect.
In this explanation for example, the waveform of above-mentioned driving voltage can be various waveforms, for example: sinusoidal wave, work period (duty cycle) the square wave or the waveform of the waveform (for example waveform of electric capacity cycle charge-discharge output) that matches of pulse wave, triangular wave, positive and negative exponential wave, the waveform that positive and negative logarithm phase of wave cooperates etc. less than 100%, so that this light-emitting device 1 is not changed between luminance in this luminance and this.In addition, when the waveform of the driving voltage that provides when this drive unit 2 is periodic wave, this drive unit 2 also can be adjusted to the cycle wave frequency and be higher than on 41.6 hertz to 62.5 hertz, so, can correspond to the persistence of vision frequency of human eye, to make the user be difficult to perceive this light-emitting device 1 be repetition luminance with do not change in the luminance, therefore can not cause sense of discomfort, and can make the user feel comfortable.
＜drive unit 2 〉
In the present embodiment, this drive unit 2 is half-wave rectifiers, and this drive unit 2 comprises a transformation coil 21, first a diode D1, and one first resistance R 1.
This transformation coil 21 has a first side winding L1 who is electrically connected with this AC power 100 and a secondary side winding L2, and this secondary side winding L2 has second end 212 of one first end 211 and a ground connection.
This first diode D1 has the anode and the negative electrode that are electrically connected with first end 211 of the secondary side winding L2 of this transformation coil 21.
This first resistance R 1 is electrically connected between the negative electrode and ground of this first diode D1, and is parallel to this light-emitting device 1.
The first side winding L1 of this transformation coil 21 receives this input voltage, and this transformation coil 21 is adjusted the size of this input voltage to adjust voltage from this secondary side winding L2 output one according to a voltage ratio.
The anode of this first diode D1 receives this adjustment voltage, and according to the positive and negative phase place of this adjustment voltage and between conducting and not conducting, switch accordingly, to export the driving voltage that this is half-wave and positive phase from the negative electrode of this first diode D1.
By this drive unit 2, the input voltage (as: general civil power) for alternating current can be converted to this driving voltage that presents the half-wave form, so, this light-emitting device 1 is not switched between luminance in this luminance and this.
＜the second preferred embodiment 〉
Consult Fig. 2, one second preferred embodiment of the non-constant pressure type luminescent system of the utility model and the difference of this first preferred embodiment are:
This drive unit 2 is bridge full wave rectifiers, and this drive unit 2 comprises a transformation coil 21, the first diode D1, second a diode D2, the 3rd diode D3, the 4th a diode D4, and one first resistance R 1.
This transformation coil 21 has a first side winding L1 who is electrically connected with this AC power 100 and a secondary side winding L2, and this secondary side winding L2 has one first end 211 and one second end 212.
This first diode D1 has the anode and the negative electrode that are electrically connected with first end 211 of this secondary side winding L2.
This second diode D2 has the negative electrode and the anode that are electrically connected with second end 212 of this secondary side winding L2.
The 3rd diode D3 has a negative electrode that is connected with the cathodic electricity of this first diode D1, and an anode that is electrically connected with second end 212 of this secondary side winding L2.
The 4th diode D4 has a negative electrode that is electrically connected with first end 211 of this secondary side winding L2, and an anode that is electrically connected with the anode of this second diode D2.
This first resistance R 1 is electrically connected between the anode of the negative electrode of this first diode D1 and this second diode D2, and is parallel to this light-emitting device 1.
The first side winding L1 of this transformation coil 21 receives this input voltage, and this transformation coil 21 is adjusted the size of this input voltage to adjust voltage from this secondary side winding L2 output one according to a voltage ratio.
Along with this adjusts voltage when the positive and negative phasetophase conversion, this the first diode D1 and the second diode D2, the 3rd diode D3 and the 4th diode D4 switch between conducting and not conducting respectively accordingly, become this to be the driving voltage of all-wave and positive phase will adjust voltage commutation.
By this drive unit 2, the input voltage (as: general civil power) for alternating current can be converted to this driving voltage that presents the all-wave form, so, this light-emitting device 1 is not switched between luminance in a luminance and.
In the present embodiment, this drive unit 2 is bridge full wave rectifiers, but this drive unit 2 also can be the full-wave rectifier of other kind certainly, for example: centre cap formula full-wave rectifier, electron tubes type full-wave rectifier, three-phase bridge full-wave rectifier etc.Above-mentioned full-wave rectifier all can make this light-emitting device 1 not switch between luminance in this luminance and this with being converted to the driving voltage that presents the all-wave form for alternating current and the input voltage that is the string ripple equally.
＜the three preferred embodiment 〉
Consult Fig. 3, one the 3rd preferred embodiment of the non-constant pressure type luminescent system of the utility model comprises a light-emitting device 1 and a drive unit 2.
This drive unit 2 is electrically connected on a grid bias power supply Vcc1 and is the bias voltage of direct current to receive one, and changes to produce one in the driving voltage greater than conversion between reaching less than a critical voltage according to this bias voltage in an operation cycle.
This light-emitting device 1 is electrically connected on this drive unit 2 to receive this driving voltage, and in this operation cycle, whether be higher than this critical voltage according to this driving voltage, and do not change between luminance in a luminance and, and this light-emitting device 1 comprises at least one light-emitting diode 11.
In the present embodiment, this drive unit 2 is to produce the driving voltage of periodic wave with this input voltage conversion, but be not limited thereto, also can be: this drive unit 2 results from this input voltage conversion greater than the driving voltage that reaches less than the aperiodic wave of conversion between this critical voltage, also identical effect can be arranged, difference only be this luminance and this not the conversion between luminance can not present the cycle form.
In the present embodiment, this light-emitting device 1 comprises one first illuminating module 12 and one second illuminating module 13, this first illuminating module 12 and this second illuminating module 13 have most light-emitting diodes 11 respectively, this drive unit 2 is to comprise a no stable state multi resonant oscillating circuit 22 that is electrically connected with this light-emitting device 1, this no stable state multi resonant oscillating circuit 22 comprises a first transistor Q1, a transistor seconds Q2, one first capacitor C 1, one second capacitor C 2, one first resistance R 1, one second resistance R 2, one the 3rd resistance R 3, and one the 4th resistance R 4.
This first transistor Q1 has the emitter-base bandgap grading of a ground connection, a base stage, and a collection utmost point that is electrically connected with this first illuminating module 12.
This transistor seconds Q2 has the emitter-base bandgap grading of a ground connection, a base stage, and a collection utmost point that is electrically connected with this second illuminating module 13.
This first capacitor C 1 is electrically connected on the base stage of this transistor seconds Q2 and the collection interpolar of this first transistor Q1.
This second capacitor C 2 is electrically connected with the base stage of this first transistor Q1 and the collection utmost point of this transistor seconds Q2 respectively.
This first resistance R 1 is electrically connected between the base stage and grid bias power supply Vcc1 of this transistor seconds Q2.
Between the collection utmost point and this grid bias power supply Vcc1 that this second resistance R 2 of series connection and this first illuminating module 12 are electrically connected on this first transistor Q1.
The 3rd resistance R 3 is electrically connected between the base stage and this grid bias power supply Vcc1 of this first transistor Q1.
Between the collection utmost point and this grid bias power supply Vcc1 that the 4th resistance R 4 of series connection and this second illuminating module 13 are electrically connected on this transistor seconds Q2.
By making this first transistor Q1 and this transistor seconds Q2 take turns conducting, this no stable state multi resonant oscillating circuit 22 can be adjusted this driving voltage that exports this first illuminating module 12 and this second illuminating module 13 to, can export respectively whereby present square wave or pulse wave form this driving voltage to this first illuminating module 12 and this second illuminating module 13, this first illuminating module 12 and this second illuminating module 13 are not changed between luminance in a luminance and in turn.
＜the four preferred embodiment 〉
Consult Fig. 4, one the 4th preferred embodiment of the non-constant pressure type luminescent system of the utility model and the difference of the 3rd preferred embodiment are:
This drive unit 2 comprises a no stable state multi resonant oscillating circuit 22 that is electrically connected with this light-emitting device 1, this no stable state multi resonant oscillating circuit 22 comprises an operational amplifier 221, one first capacitor C 1, one first resistance R 1, second resistance R 2, and one the 3rd resistance R 3:
This operational amplifier 221 has a normal phase input end (+), a negative-phase input (-), and an output i1 who is electrically connected with this light-emitting device 1.
This first capacitor C 1 is electrically connected between ground and this negative-phase input.
This first resistance R 1 is electrically connected between ground and this normal phase input end.
This second resistance R 2 is electrically connected between this normal phase input end and this output i1.
The 3rd resistance R 3 is electrically connected between this output i1 and this negative-phase input.
This operational amplifier 221, this first resistance R 1, and this second resistance R 2 is to form a schmitt trigger (Schmitt Trigger), this first capacitor C 1 and the 3rd resistance R 3 are formed the negative feedback network, so, this first capacitor C, 1 cycle charging and discharge, whereby, this driving voltage that the voltage output that this operational amplifier 221 provides corresponding to this first capacitor C 1 presents the pulse wave form makes this light-emitting device 1 not change between luminance in a luminance and to this light-emitting device 1.
＜the five preferred embodiment 〉
Consult Fig. 5, one the 5th preferred embodiment of the non-constant pressure type luminescent system of the utility model and the difference of the 3rd preferred embodiment are:
This drive unit 2 comprises a no stable state multi resonant oscillating circuit 22 that is electrically connected with this light-emitting device 1, this no stable state multi resonant oscillating circuit 22 comprises that a Shi Mite triggers lock 222 (Schmitt Trigger Gate), first capacitor C 1, and one first resistance R 1.
This Shi Mite triggers lock 222 and has an input i2 and an output i1 who is electrically connected with this light-emitting device 1.
This first capacitor C 1 is electrically connected between ground and this input i2.
This first resistance R 1 is electrically connected between this input i1 and this output i2.
This first capacitor C 1 is still uncharged when beginning, the output i2 output one of this Shi Mite triggering lock 222 is positioned at the driving voltage of high levle, make this first capacitor C 1 begin charging, when this first capacitor C 1 charges to the upper limit trigger voltage of this Shi Mite triggering lock 222, this Shi Mite triggers the driving voltage that lock 222 outputs one are in low level, this first capacitor C 1 begins discharge, then when this first capacitor C 1 is discharged to the lower limit trigger voltage of this Shi Mite triggering lock 222, this Shi Mite triggers this driving voltage that lock 222 outputs are positioned at high levle, so constantly circulation, the driving voltage that these Shi Mite triggering lock 222 lasting outputs present the pulse wave form makes this light-emitting device 1 not change between luminance in a luminance and to this light-emitting device 1.
＜the six preferred embodiment 〉
Consult Fig. 6, one the 6th preferred embodiment of the non-constant pressure type luminescent system of the utility model and the difference of the 3rd preferred embodiment are:
This drive unit 2 comprises a no stable state multi resonant oscillating circuit 22 that is electrically connected with this light-emitting device 1, and this no stable state multi resonant oscillating circuit 22 comprises one first inverter 223, one second inverter 224, first resistance R 1, and one first capacitor C 1.
This first inverter 223 has an input i2 and an output i1, and comprises a CMOS (Complementary Metal Oxide Semiconductor) (Complementary metal-oxide-semiconductor) in the present embodiment.
This second inverter 224 has an input i4 who is electrically connected with the output i1 of this first inverter 223 and an output i3 who is electrically connected with this light-emitting device 1, and comprises a CMOS (Complementary Metal Oxide Semiconductor) in the present embodiment.
This first resistance R 1 is electrically connected between the input i2 of the output i1 of this first inverter 223 and this first inverter 223.
This first capacitor C 1 is electrically connected between the output i3 of the input i2 of this first inverter 223 and this second inverter 224.
This first capacitor C 1 is still uncharged at the beginning the time, this first inverter, 223 outputs, one first voltage that is positioned at high levle makes these second inverter, 224 outputs one be positioned at the driving voltage of low level, whereby, this first voltage makes this first capacitor C 1 begin charging through this first resistance R 1, when this first capacitor C 1 charges to the critical voltage of this first inverter 223 and this second inverter 224, this first inverter 223 is pulled down to low level with this first voltage, make this second inverter 224 that this driving voltage is pulled to high levle, make the voltage instantaneous of this first capacitor C 1 increase to this high levle and begin discharge, when this first capacitor C 1 is discharged to the critical voltage of this first inverter 223 and this second inverter 224, this first inverter 223 makes this driving voltage return back to high levle, this second inverter 224 makes this driving voltage return back to low level, whereby, the driving voltage that these second inverter, 224 lasting outputs present square wave or pulse wave form makes this light-emitting device 1 not change between luminance in a luminance and to this light-emitting device 1.
＜the seven preferred embodiment 〉
Consult Fig. 7, one the 7th preferred embodiment of the non-constant pressure type luminescent system of the utility model and the difference of the 3rd preferred embodiment are:
This drive unit 2 is to comprise a no stable state multi resonant oscillating circuit 22 that is electrically connected with this light-emitting device 1, this no stable state multi resonant oscillating circuit 22 comprises one 555 timer 2 25, one first capacitor C 1, one first resistance R 1, second resistance R 2, and one second capacitor C 2.
This 555 timer 2 25 has the earth terminal (first end), a trigger end (second end), a critical voltage end (the 6th end), an output that is electrically connected with this light-emitting device 1 (the 3rd end), a control end (five terminal), one of a power end that is electrically connected with a grid bias power supply Vcc1 (the 8th end), a ground connection and resets end (the 4th end), and a discharge end (the 7th end).
This first capacitor C 1 is electrically connected between ground and this critical voltage end, and this trigger end is electrically connected on 1 of this critical voltage end and this first capacitor C.
This first resistance R 1 is electrically connected with this critical voltage end and this discharge end respectively.
This second resistance R 2 is electrically connected with this discharge end and this grid bias power supply Vcc1 respectively.
This second capacitor C 2 is electrically connected between this control end and ground.
This first capacitor C 1 is still uncharged when just being electrically connected with this grid bias power supply Vcc1, the output output one of this 555 timer 2 25 is in the driving voltage of high levle, and this grid bias power supply Vcc1 begins to charge to this first capacitor C 1 via this second resistance R 2 and first resistance R 1, when this first capacitor C 1 charges to the voltage that reaches 2/3rds this grid bias power supply Vcc1, this output is converted to the driving voltage that output one is in low level, this first capacitor C, 1 beginning is via this first resistance R, 1 discharge, when this first capacitor C 1 is discharged to the voltage that reaches 1/3rd this grid bias power supply Vcc1, this output is converted to the driving voltage of output high levle again, whereby, the driving voltage that the lasting output of this output presents the pulse wave form makes this light-emitting device 1 not change between luminance in a luminance and to this light-emitting device 1.
＜the eight preferred embodiment 〉
Consult Fig. 8, one the 8th preferred embodiment of the non-constant pressure type luminescent system of the utility model and the difference of the 3rd preferred embodiment are:
This drive unit 2 is to comprise a no stable state multi resonant oscillating circuit 22 that is electrically connected with this light-emitting device 1, this no stable state multi resonant oscillating circuit 22 comprises one 555 timer 2 25, one first capacitor C 1, one first resistance R 1, one second resistance R 2, one second capacitor C 2, first a diode D1, and one second diode D2.
This 555 timer 2 25 has the earth terminal (first end), a trigger end (second end), a critical voltage end (the 6th end), an output that is electrically connected with this light-emitting device 1 (the 3rd end), a control end (five terminal), one of a power end that is electrically connected with a grid bias power supply Vcc1 (the 8th end), a ground connection and resets end (the 4th end), and a discharge end (the 7th end).
This first capacitor C 1 is electrically connected between ground and this critical voltage end, and this trigger end is electrically connected on 1 of this critical voltage end and this first capacitor C.
This first resistance R 1 is electrically connected with this discharge end.
This second resistance R 2 is electrically connected with this discharge end and this grid bias power supply Vcc1 respectively.
This second capacitor C 2 is electrically connected between this control end and ground.
This first diode D1 has an anode that is electrically connected with this first capacitor C 1 and a negative electrode that is electrically connected with this first resistance R 1.
This second diode D2 has an anode that is electrically connected on 2 of this first resistance R 1 and this second resistance R, and a negative electrode that is electrically connected between this first capacitor C 1 and this first diode D1.
This first capacitor C 1 is still uncharged when just being electrically connected with this grid bias power supply Vcc1, this output output one is in the driving voltage of high levle, and this grid bias power supply Vcc1 begins to charge to this first capacitor C 1 via this second resistance R 2 and this second diode D2, when this first capacitor C 1 charges to the voltage that reaches 2/3rds this grid bias power supply Vcc1, this output is converted to the driving voltage that output one is in low level, this first capacitor C, 1 beginning is via this first resistance R 1 and this first diode D1 discharge, when this first capacitor C 1 is discharged to the voltage that reaches 1/3rd this grid bias power supply Vcc1, this output is converted to the driving voltage of output high levle again, whereby, the lasting output of this output presents the driving voltage of square wave or pulse wave form to this light-emitting device 1.What deserves to be mentioned is, because the charge path and the discharge path of this first capacitor C 1 are to pass through this second resistance R 2 and this first resistance R 1 independently of one another and respectively, therefore, as long as the resistance value of this second resistance R 2 and this first resistance R 1 is equated, this first capacitor C 1 is charged to the charging interval of output voltage conversion is equated with being discharged to the discharge time that output voltage is changed, and export square wave whereby.
The foregoing description has the following advantages:
Because this light-emitting device 1 is not change between luminance in this luminance and this corresponding to the variation of this driving voltage, therefore, characteristic by the voltage that changes these drive unit 2 outputs, just can make this light-emitting device 1 can not maintain this luminance fully, but change is in not luminance at part-time according to driving voltage, so, compared to the luminous illumination kenel of whole process, the heat of this light-emitting device 1 accumulation can be less relatively and can not continue to maintain the state of high heat.Owing under the state of long-term high heat, not only can make this light-emitting device 1 because of overheated aging gradually, also may cause this light-emitting device 1 to burn or damage, therefore, reduce the service life that the time that is in high hot state can prolong this light-emitting device 1, also can reduce the fault probability of this light-emitting device 1.In addition, because this light-emitting device 1 part-time is to be in not luminance, can also reduce the consumption of electric power.So can reach the purpose of this utility model really.
Claims (23)
1. a non-constant pressure type luminescent system comprises: a drive unit, and a light-emitting device; It is characterized in that:
This drive unit is electrically connected on an AC power receiving an input voltage that is interchange, and with this input voltage change with produce one in greater than and less than a critical voltage between the driving voltage of conversion; And
This light-emitting device is electrically connected on this drive unit receiving this driving voltage, and whether is higher than this critical voltage according to this driving voltage, and does not change between luminance in a luminance and, and this light-emitting device comprises at least one light-emitting diode.
2. non-constant pressure type luminescent system as claimed in claim 1 is characterized in that: this drive unit is a rectifier that is electrically connected with this AC power and this light-emitting device respectively.
3. non-constant pressure type luminescent system as claimed in claim 2 is characterized in that: this drive unit is a half-wave rectifier.
4. non-constant pressure type luminescent system as claimed in claim 1 is characterized in that: this drive unit comprises a transformation coil, first diode, and one first resistance;
This transformation coil has a first side winding that is electrically connected with this AC power and a secondary side winding, and this secondary side winding has second end of one first end and a ground connection;
This first diode has the anode and the negative electrode that are electrically connected with first end of the secondary side winding of this transformation coil; And
This first resistance is electrically connected between the negative electrode and ground of this first diode, and is parallel to this light-emitting device.
5. non-constant pressure type luminescent system as claimed in claim 4 is characterized in that:
The first side winding of this transformation coil receives this input voltage, and this transformation coil is adjusted the size of this input voltage to adjust voltage from this secondary side winding output one according to a voltage ratio;
The anode of this second diode receives this adjustment voltage, and according to the positive and negative phase place of this adjustment voltage and between conducting and not conducting, switch accordingly, to export the driving voltage that this is half-wave and positive phase from the negative electrode of this second diode.
6. non-constant pressure type luminescent system as claimed in claim 1 is characterized in that: this drive unit is a full-wave rectifier.
7. non-constant pressure type luminescent system as claimed in claim 6, it is characterized in that: this drive unit is a bridge full wave rectifier, this drive unit comprises a transformation coil, first diode, second diode, the 3rd diode, the 4th diode, and one first resistance;
This transformation coil has a first side winding that is electrically connected with this AC power and a secondary side winding, and this secondary side winding has one first end and one second end;
This first diode has an anode that is electrically connected with first end of this secondary side winding and a negative electrode;
This second diode has a negative electrode that is electrically connected with second end of this secondary side winding and an anode;
The 3rd diode has a negative electrode that is connected with the cathodic electricity of this first diode, and an anode that is electrically connected with second end of this secondary side winding;
The 4th diode has a negative electrode that is electrically connected with first end of this secondary side winding, and an anode that is electrically connected with the anode of this second diode;
This first resistance is electrically connected between the anode of the negative electrode of this first diode and this second diode, and is parallel to this light-emitting device.
8. non-constant pressure type luminescent system as claimed in claim 7, the first side winding that it is characterized in that this transformation coil receives this input voltage, and this transformation coil is adjusted the size of this input voltage to adjust voltage from this secondary side winding output one according to a voltage ratio;
Along with this adjusts voltage when the positive and negative phasetophase conversion, this first diode and second diode, the 3rd diode and the 4th diode switch between conducting and not conducting respectively accordingly, become this to be the driving voltage of all-wave and positive phase will adjust voltage commutation.
9. non-constant pressure type luminescent system as claimed in claim 6 is characterized in that: this drive unit is wherein one of centre cap formula full-wave rectifier, electron tubes type full-wave rectifier, a three-phase bridge full-wave rectifier.
10. a non-constant pressure type luminescent system comprises: a drive unit, and a light-emitting device; It is characterized in that:
This drive unit is electrically connected on a grid bias power supply receiving a bias voltage that is direct current, and according to this bias voltage change with produce one in greater than and less than a critical voltage between the driving voltage of conversion; And
This light-emitting device is electrically connected on this drive unit receiving this driving voltage, and whether is higher than this critical voltage according to this driving voltage, and does not change between luminance in a luminance and, and this light-emitting device comprises at least one light-emitting diode.
11. non-constant pressure type luminescent system as claimed in claim 10 is characterized in that: this drive unit comprises a no stable state multi resonant oscillating circuit that is electrically connected with this light-emitting device.
12. non-constant pressure type luminescent system as claimed in claim 11, it is characterized in that: this light-emitting device comprises one first illuminating module and one second illuminating module, this no stable state multi resonant oscillating circuit comprises: a first transistor, a transistor seconds, first electric capacity, second electric capacity, first resistance, second resistance, the 3rd resistance, and one the 4th resistance;
This first transistor has the emitter-base bandgap grading of a ground connection, a base stage, and a collection utmost point that is electrically connected with this first illuminating module;
This transistor seconds has the emitter-base bandgap grading of a ground connection, a base stage, and a collection utmost point that is electrically connected with this second illuminating module;
This first electric capacity is electrically connected on the base stage of this transistor seconds and the collection interpolar of this first transistor;
This second electric capacity is electrically connected with the base stage of this first transistor and the collection utmost point of this transistor seconds respectively;
This first resistance is electrically connected between the base stage and this grid bias power supply of this transistor seconds;
This second resistance is connected with this first illuminating module, and and this first illuminating module be electrically connected between the collection utmost point and this grid bias power supply of this first transistor;
The 3rd resistance is electrically connected between the base stage and this grid bias power supply of this first transistor; And
The 4th resistance is connected with this second illuminating module, and and this second illuminating module be electrically connected between the collection utmost point and this grid bias power supply of this transistor seconds.
13. non-constant pressure type luminescent system as claimed in claim 12 is characterized in that: take turns conducting by this first transistor and this transistor seconds, make this no stable state multi resonant oscillating circuit export the driving voltage that this presents square wave or pulse wave form.
14. non-constant pressure type luminescent system as claimed in claim 11 is characterized in that: this no stable state multi resonant oscillating circuit comprises an operational amplifier, first electric capacity, first resistance, second resistance, and one the 3rd resistance;
This operational amplifier has a normal phase input end, a negative-phase input, and an output that is electrically connected with this light-emitting device;
This first electric capacity is electrically connected between ground and this negative-phase input;
This first resistance is electrically connected between ground and this normal phase input end;
This second resistance is electrically connected between this normal phase input end and this output; And
The 3rd resistance is electrically connected between this output and this negative-phase input.
15. non-constant pressure type luminescent system as claimed in claim 14 is characterized in that: by this first electric capacity cycle charging and discharge, the voltage output that this operational amplifier is provided corresponding to this first electric capacity presents this driving voltage of pulse wave form.
16. non-constant pressure type luminescent system as claimed in claim 11 is characterized in that: this no stable state multi resonant oscillating circuit comprises that a Shi Mite triggers lock, first electric capacity, and one first resistance;
This Shi Mite triggers lock and has an input and an output that is electrically connected with this light-emitting device;
This first electric capacity is electrically connected between ground and this input; And
This first resistance is electrically connected between this input and this output.
17. non-constant pressure type luminescent system as claimed in claim 16, it is characterized in that: by this first electric capacity cycle charging and discharge, this Shi Mite triggers lock is output in circulation switching between high levle and low level corresponding to the voltage of this first electric capacity this driving voltage, whereby, the lasting output of this Shi Mite triggering lock presents the driving voltage of pulse wave form to this light-emitting device.
18. non-constant pressure type luminescent system as claimed in claim 11 is characterized in that: this no stable state multi resonant oscillating circuit comprises one first reverser, second reverser, first resistance;
This first reverser has an input and an output;
This second reverser has an input that is electrically connected with the output of this first reverser and an output that is electrically connected with this light-emitting device;
This first resistance is electrically connected between the input of the output of this first reverser and this first reverser; And
This first electric capacity is electrically connected between the output of the input of this first reverser and this second reverser.
19. non-constant pressure type luminescent system as claimed in claim 18, it is characterized in that: this first inverter and this second inverter are exported one first voltage and a driving voltage respectively, the circulation between charging and discharge of this first electric capacity corresponding to this first voltage and this driving voltage, and charging that this first electric capacity carries out and discharging action switch this first voltage and this driving voltage in turn between high levle and low level, whereby, the lasting output of this second inverter presents the driving voltage of square wave or pulse wave form to this light-emitting device.
20. non-constant pressure type luminescent system as claimed in claim 11 is characterized in that: this no stable state multi resonant oscillating circuit comprises: one 555 timer, first electric capacity, first resistance, second resistance, and one second electric capacity;
This 555 timer have the earth terminal of a power end that is electrically connected with this grid bias power supply, a ground connection, trigger end, critical voltage end, output that is electrically connected with this light-emitting device, control end, one reset end, and discharge end;
This first electric capacity is electrically connected between ground and this critical voltage end, and this trigger end is electrically connected between this critical voltage end and this first electric capacity;
This first resistance is electrically connected with this critical voltage end and this discharge end respectively;
This second resistance is electrically connected with this discharge end and this grid bias power supply respectively; And
This second electric capacity is electrically connected between this control end and ground.
21. non-constant pressure type luminescent system as claimed in claim 20, it is characterized in that: by this first electric capacity cycle charging and discharge, the output of this 555 timer is output in this driving voltage that switches back and forth between high levle and low level, whereby, the lasting output of the output of this 555 timer presents this driving voltage of pulse wave form to this light-emitting device.
22. non-constant pressure type luminescent system as claimed in claim 11, it is characterized in that: this no stable state multi resonant oscillating circuit comprises one 555 timer, first electric capacity, first resistance, second resistance, second electric capacity, first diode, and one second diode;
This 555 timer, have the earth terminal of a power end that is electrically connected with this grid bias power supply, a ground connection, trigger end, critical voltage end, output that is electrically connected with this light-emitting device, control end, one reset end, and discharge end;
This first electric capacity be electrically connected between ground and this critical voltage end, and this trigger end is electrically connected between this critical voltage end and this first electric capacity;
This first resistance is electrically connected with this discharge end;
This second resistance is electrically connected with this discharge end and this grid bias power supply respectively;
This second electric capacity is electrically connected between this control end and ground;
This first diode has an anode that is electrically connected with this first electric capacity and a negative electrode that is electrically connected with this first resistance; And
This second diode has an anode that is electrically connected between this first resistance and this second resistance, and a negative electrode that is electrically connected between this first electric capacity and this first diode.
23. non-constant pressure type luminescent system as claimed in claim 22, it is characterized in that: by this first electric capacity cycle charging and discharge, the output of this 555 timer is output in this driving voltage that switches back and forth between high levle and low level, whereby, the lasting output of the output of this 555 timer presents the driving voltage of square wave or pulse wave form to this light-emitting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200755380U CN202077223U (en) | 2011-03-18 | 2011-03-18 | Non-constant voltage type light-emitting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200755380U CN202077223U (en) | 2011-03-18 | 2011-03-18 | Non-constant voltage type light-emitting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202077223U true CN202077223U (en) | 2011-12-14 |
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ID=45115297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200755380U Expired - Fee Related CN202077223U (en) | 2011-03-18 | 2011-03-18 | Non-constant voltage type light-emitting system |
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| Country | Link |
|---|---|
| CN (1) | CN202077223U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109256093A (en) * | 2018-11-27 | 2019-01-22 | 昆山国显光电有限公司 | Organic light emitting display and data-signal voltage adjusting method |
-
2011
- 2011-03-18 CN CN2011200755380U patent/CN202077223U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109256093A (en) * | 2018-11-27 | 2019-01-22 | 昆山国显光电有限公司 | Organic light emitting display and data-signal voltage adjusting method |
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| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111214 Termination date: 20140318 |