CN2558185Y - Fluorescent lamp installation - Google Patents

Abstract

The utility model is a fluorescent lamp device, comprising an electronic fluorescent lamp starter, a phase-advancing capacitor, a ballast, a bridge rectifier, a fluorescent lamp, a brightness compensation circuit and a control circuit, and powered by an AC power supply; the utility model can enable the fluorescent lamp to obtain a good heating process and an ignition process, thereby extending the life of the fluorescent lamp, while improving the use efficiency of the fluorescent lamp tube and saving electricity; when the voltage of the fluorescent lamp is unstable, the brightness of the lamp tube is improved, and the flickering phenomenon of the fluorescent lamp tube is greatly improved.

Description

Fluorescent lamp installation

technical field

The utility model relates to a fluorescent lamp starter, in particular to an electronic fluorescent lamp starter which can accurately control heating time and an absolutely synchronous fire point.

Background technique

The heating principle of the traditional electronic starter for fluorescent lamps is to store electric energy for half a cycle of the AC current setting, which is used as the starting electric energy for the other heating half cycle of the AC current, and the ignition principle is based on the ignition time of the resistance and capacitor as the time constant. Therefore, traditional electronic starters for fluorescent lamps use resistors and capacitors as time constant values regardless of heating, ignition, and lighting of the fluorescent lamp. Ideal value, so the disadvantages of too long heating time, inaccurate ignition time and too long ignition time of fluorescent lamps often occur, which not only waste electricity, but also shorten the service life of fluorescent lamps. This is why electronic fluorescent lamp starters cannot be popularized. In view of this, the purpose of this utility model is to provide a new technical principle, which can improve the shortcomings of the known technology and make the electronic starter of eyelights reach a perfect state.

Contents of the invention

The purpose of this utility model is to enable the fluorescent lamp to obtain a good heating process and ignition process, thereby prolonging the life of the fluorescent lamp, improving the use efficiency of the fluorescent tube and saving electricity; when the voltage of the fluorescent lamp is unstable, the brightness of the fluorescent tube is improved, And greatly improve the flickering phenomenon of fluorescent tubes.

To achieve the above object, the fluorescent lamp device of the present invention includes an electronic fluorescent lamp starter, a phase-advancing capacitor, a ballast, a bridge rectifier, a fluorescent lamp, a brightness compensation circuit and a control circuit, and is powered by an AC power supply.

Among them, the electronic fluorescent lamp starter includes a time control circuit, a main switch circuit and an ignition circuit to control the rapid ignition and heating of the fluorescent lamp equipment, wherein the time control circuit, the main switch circuit and the ignition circuit are connected in parallel The connection to the fluorescent tube is a two-terminal joint; the signal transmission between the time control circuit and the ignition circuit is through direct coupling; the control of ON and OFF states between the ignition circuit and the main switch circuit adopts direct coupling, And its ignition time is synchronized with the peak value of the heating current; the zero return circuit contained in the time control circuit depends on the Zener Voltage value of the Zener voltage diode of the zero return circuit, and the time control circuit and the Zener voltage diode of the zero return circuit are coupled through way to connect.

The transistor of the time control circuit of the electronic fluorescent lamp starter is NPN type; the time constant resistor and the time constant capacitor are connected in series, the point of which is connected to the transistor collector of the return to zero circuit, its emitter is connected to the negative terminal, and its base is connected to the second terminal. At the midpoint of the voltage dividing resistor, the P-type terminal of the zener diode is connected to the positive voltage terminal of point A, and the N-type terminal is connected to one end of the voltage-dividing resistor. The zener diode is connected in series with the two voltage-dividing resistors. It is NPN type.

In the electronic fluorescent lamp starter, the main switch circuit is a normally closed switch circuit composed of a Darlington circuit, its base is connected to a resistor and a collector of a transistor, and a plurality of diodes are connected to the emitter of the Darlington circuit. The terminal and the B connector end are connected to the A and B connector ends of the fluorescent tube; the forward voltage of the A contact end of the fluorescent tube is the saturation voltage of the Darlington circuit plus the saturation voltage of the plurality of diodes Voltage.

The electronic fluorescent lamp starter includes a fuse or thermal fuse, a current limiting resistor, a bridge rectifier circuit, a main switch circuit, an ignition circuit, and a self-locking circuit; the fuse or thermal fuse is connected in series to the input end of the electronic fluorescent lamp starter and the Between the current resistors; the current limiting resistor is set to limit the current value of the circuit, and its resistance value depends on its needs, and is not self-limiting; the AC terminal of the bridge rectifier circuit is connected to the electronic fluorescent lamp starter The current-limiting resistor terminal, its positive and negative terminals are connected to the main switch circuit, ignition circuit, and self-locking circuit in parallel. They are all connected by direct coupling. In order to meet the needs of different types of fluorescent tubes, they can also be changed to half-wave rectification. circuit; the main switching circuit is composed of MOSFETS semiconductors, the drain terminal is connected to the positive terminal, the source is connected to the negative terminal, and the gate is directly connected to the output terminal of the ignition circuit to perform the heating and brightness of the fluorescent tube. Bright voltage; the ignition circuit is composed of two sets of transistor circuits with inverting function and the first voltage divider resistor, Zener diode and first time constant capacitor. The function of the first divider resistor is to identify the unheated voltage of the fluorescent tube, The heating voltage and lighting voltage provide the setting standard for setting the Zener Voltage of the Zener diode, and the first time constant capacitor controls the heating time of the fluorescent tube. The components of this circuit are all connected by direct coupling. The positive end of the time constant capacitor is connected with the self-locking transistor base of the self-locking circuit to protect the circuit of the utility model and the safety of circuits such as fluorescent tubes and ballasts. After several times of temperature and continuous lighting, the lighting action of the fluorescent tube is unsuccessful, and its self-locking circuit will produce a self-locking function. The circuit of the Zener diode, voltage dividing resistor, second time constant capacitor and self-locking transistor The connections are all connected by direct coupling, and the collector of the self-locking transistor is connected to the positive terminal of the first time constant capacitor to perform the function of self-locking; the first voltage dividing resistor of the ignition circuit, the Zener diode and the first time constant The circuit composed of the constant capacitor, the self-locking circuit Zener diode, the second voltage dividing resistor and the second time constant capacitor is interchangeable.

The circuit of the first group of OP AMP ICs in this control circuit is to judge whether the AC power supply voltage reaches the set voltage value. It is taken from the midpoint of the two voltage divider resistors, and the midpoint is connected with a filter capacitor, so it is said that the voltage is a direct voltage, and this DC voltage is connected to the positive input terminal of the first group of OP AMP ICs. The components of the above circuits are Connect the coupling mode; the negative input terminal of the first group of OP AMP ICs is connected to the midpoint of the two voltage divider resistors, and the reference voltage is obtained from the output terminal of the three-terminal voltage regulator through the two voltage divider resistors, at the three terminals The output terminal of the voltage regulator is connected with a filter capacitor, so the reference voltage obtained at the negative input terminal is a DC voltage, and the above circuit components are all in the direct coupling mode; the output terminal of the first group of OP AMP ICs is connected with a drop-down resistor and a photoelectric In the input side circuit of the thyristor coupler, the voltage-dropping resistor is connected in series with the photothyristor coupler, and the three are connected in a direct coupling mode; the power supply of the positive and negative input terminals of the second group of OP AMP ICs comes from the three-terminal voltage adjustment The output terminal of the device, the reference voltage of the positive input terminal is taken from the midpoint of the two voltage divider resistors, and the voltage of the negative input terminal is taken from the midpoint of the two voltage divider components. One of the two circuit components is a resistor, and the other is a photocoupler. The two ends of the output side collector and emitter are all connected by direct coupling; the output side of the second group of OP AMP ICs is connected to a P-type end of a diode, and its N-type end is connected to one end of the voltage divider resistor, and the two voltage divider resistors The midpoint of the silicon-controlled rectifier is connected to the gate of the silicon-controlled rectifier, and the anode of the silicon-controlled rectifier is connected to the positive input terminal of the first group of OP AMP ICs, and its cathode is connected to the negative terminal of the IC. The components of the above circuit adopt a direct coupling method; the first group of OP AMP The output side of the photoelectric thyristor coupler of the IC is connected between point A of the electronic fluorescent lamp starter and the collector of the Darlington circuit; the input side of the optocoupler of the second group OP AMP IC is connected to the electronic fluorescent lamp starter The two ends of the time constant capacitor are connected in series with a dropping resistor in a direct coupling manner.

Its AC brightness compensation circuit cancels the bridge rectifier circuit, and one end of the high-voltage capacitor is connected to one end of the output end of the ballast, and the other end is connected to one end of the normally open contact of the relay, and the other end of the normally open contact is connected to the ballast. The other end of the output end, that is, the high-voltage capacitor is connected in series with the normally open contact of the relay, and the two ends connected in series are connected to both ends of the output end of the ballast; The two ends of the fluorescent tube on the side of the electronic fluorescent lamp starter form an AC brightness compensation circuit; the electronic fluorescent lamp starter includes a bridge rectifier, which has the same function as the bridge rectifier circuit, so the utility model It is possible to use only one set of bridge rectifiers without being self-limited to which bridge rectifiers are mentioned above.

Its AC brightness compensation circuit is made up of a time constant resistor, a time constant capacitor, a first ZenerDiode, a base resistor, a transistor, a relay, a second Zener Diode, a filter capacitor and a high-voltage capacitor, which can be combined with the electronic fluorescent lamp of claim 2 The starter is joined together without self-limiting; one end of the time constant resistor is connected to the positive end, the other end is connected to the positive end of the time constant capacitor and the N-type end of the first Zener Diode, and the negative end of the time constant capacitor Connected to the negative terminal, all of them are connected by direct coupling; the P-type terminal of the first Zener Diode is connected to one end of the base resistor of the transistor, the other end of the base resistor is connected to the negative terminal, and the emitter of the transistor is connected to the negative electrode. The collector of the transistor is connected to one end of the relay coil, the other end of the relay coil is connected to the N-type end of the second Zener Diode, the positive end of the filter capacitor and one end of the drop-down resistor, the P-type end of the second Zener Diode and the filter capacitor The negative terminal of the relay is connected to the negative terminal, and the other end of the drop-down resistor is connected to the positive terminal, and all components are connected by direct coupling; one end of the normally open contact of the relay is connected to one end of the fluorescent tube filament, and the other end is connected to a high-voltage capacitor One end of the high-voltage capacitor, the other end of the high-voltage capacitor is connected to the other end of the fluorescent tube, and its components are connected by direct coupling.

The utility model has many advantages: after the control circuit adopted in the utility model is illuminated by the fluorescent lamp, the circuit of the electronic fluorescent lamp starter is controlled by the control circuit to be in an open circuit state, so the electronic fluorescent lamp starter is turned on after the fluorescent lamp is ignited. That is to form an open circuit without wasting electric energy.

The utility model is provided with the device of fuse or temperature fuse, to protect the safety of the utility model.

The purpose of the bridge rectifier in the utility model is to obtain a 120HZ full-wave rectification voltage at both ends of the fluorescent tube, so that the flickering phenomenon of the fluorescent tube is greatly improved.

The utility model is provided with a current-limiting resistor, which is set for making the circuit of the utility model not exceed the set current.

The purpose of the ballast (Ballast) used in the utility model is to generate high voltage when the fluorescent tube is ignited to make the fluorescent tube shine. When the fluorescent lamp is lit, the ballast is to maintain the stability of the fluorescent tube .

The purpose of the phase advance capacitor adopted in the utility model is to enable the device of the utility model to obtain high power factor value.

The brightness compensation circuit of the utility model is unique in the world. When the AC power supply voltage is insufficient, the pulsating voltage is increased to increase the brightness of the fluorescent tube. When the voltage is normal, it restores the brightness of the normal voltage of the fluorescent tube.

Description of drawings

Shown in Fig. 1 is the composition block diagram of fluorescent lamp device of the present utility model;

Fig. 2 shows the circuit diagram that the utility model electronic fluorescent lamp starter implements;

Fig. 3 shows another circuit diagram of the embodiment of the electronic fluorescent lamp starter of the present invention;

Fig. 4 shows the ignition action voltage waveform diagram of Fig. 3;

Fig. 5 shows the circuit diagram of the utility model fluorescent lamp device;

Figure 6 shows the voltage waveform diagram of the brightness compensation circuit of the present invention;

Fig. 7 shows the circuit diagram of the utility model AC brightness compensation circuit;

Fig. 8 shows another implementation circuit diagram of the AC type brightness compensation circuit of the present invention;

Figure 9 shows the voltage waveform diagram of the AC brightness compensation circuit of the present invention;

Figure 10 shows the unit device of the new electronic fluorescent lamp starter of the present invention with a brightness compensation circuit;

Fig. 11 shows the unit device of the new traditional mechanical fluorescent lamp starter with brightness compensation circuit of the present invention.

Detailed ways

As shown in Figure 1, it is a block diagram of the fluorescent lamp device of the present invention, which consists of an electronic fluorescent lamp starter 100, a fluorescent lamp 200, a bridge rectifier 300, a ballast 400, a phase-advancing capacitor 500, a control circuit 600, an AC power supply 700 and Composed of brightness compensation circuit 800; the utility model can be used in AC power supply, except that it can be combined into one, and its electronic fluorescent lamp starter can also be used alone in traditional fluorescent lamp equipment without self-limitation.

As shown in Figure 2 is the circuit diagram of the electronic fluorescent lamp starter 100 of the present invention, the electronic fluorescent lamp starter includes a time control circuit, a main switch circuit and an ignition circuit to control the rapid ignition and heating action of fluorescent lamp equipment, wherein the main The switch circuit is composed of bridge rectifier 101, Darlington circuit 102, 103, diode 104 and resistor 105 and other components, the ignition circuit is composed of transistor 106, Zener diode 107, diode 108 and other components, and the time control circuit is composed of time Constant resistor 109, time constant capacitor 110, transistor 111 and voltage divider resistors 112, 113. Its action principle is that when the output voltage of the two terminals of the fluorescent tube 200 is sent to both ends of the CD, its voltage is limited by the fuse 117. Resistor 123, after the bridge rectifier 101, no matter which terminal the voltage across the CD is positive or negative, after the bridge rectifier 101, the voltage at the A terminal is positive, the voltage at the B terminal is negative, and the voltage at the A terminal is passed through the transistor 103 After the base resistor 105, the Darlington circuits 102 and 103 start to be turned on. At this time, the A-terminal current passes through the collector of the transistor 102, the emitter reaches the P-terminal of the diode 104, and then reaches the B-terminal from the N-terminal of the diode 104, so The filaments 201 and 202 of the fluorescent lamp 200 start to heat up, and at the same time, the voltage at terminal A charges the time constant capacitor 110 through the time constant resistor 109, and the charging rate of the voltage across the time constant capacitor 110 is determined by the time constant resistor 109 and the time constant capacitor 110. Depending on the value, when the voltage across the capacitor 110 is greater than the Zener Voltage of the Zener diode 108, a large current will reach the base of the transistor 106 through the diode 107, so that the transistor 106 reaches a saturated state, so the Darlington circuit 102, 103 forms Open circuit state, so the ballast 400 generates a high voltage e=-L di/dt, this high voltage starts to ignite the fluorescent tube 200 through the bridge rectifier 300, and until the fluorescent tube 200 lights up, when the AC power is turned off, The voltage at both ends of A and B is zero, so the transistor 111 discharges the voltage of the time constant capacitor 110, so that the time control is reset to zero, so that when the AC power is sent next time, the time is accurately re-timed, and the voltage dividing resistors 112 and 113 The function is to control the sensitivity of the operation of the transistor 111 .

As shown in Figure 3, another embodiment of the electronic fluorescent lamp starter is shown. The operating principle of the circuit is that when the AC current at the C terminal passes through the fuse 117, the current limiting resistor 123, and the AC terminal of the bridge rectifier 101, it passes through the positive DC terminal. The output is sent to the first voltage-dividing resistors 109 and 119, and then returned to the negative terminal of the bridge rectifier 101 through the other end of the voltage-dividing resistor 119 and returned to the D terminal. At this time, it is divided into four situations for explanation:

1. The fluorescent tube 200 is not lit, the midpoint voltage of the first voltage dividing resistor 109 and the voltage dividing resistor 119 is greater than the Zener Voltage of the Zener diode 108, so the first time constant capacitor 120 starts charging, and the base voltage of the transistor 106 makes The collector and emitter of the transistor 121 are open. At this time, the positive voltage of the second load resistor 122 turns on the main switch circuit MOSFETS118, so the fluorescent tube 200 heats up, and the voltage at both ends of A and B drops. At this time, the first minute The midpoint voltage of the piezoresistors 109 and 119 is lower than the Zener Voltage of the Zener diode 108, so the capacitor 120 starts to discharge at the first time.

2. When the discharge voltage of the first time constant capacitor 120 makes the collector-emitter of the transistor 106 open, the first load resistor 105 supplies a positive voltage to make the collector-emitter of the transistor 121 conduct, so the drain of the main switching circuit MOSFETS118 (Drain ) and the source (Source) are instantly opened, and the current flowing through the filament of the fluorescent tube 200 is interrupted instantaneously, so the ballast 400 generates an ignition high voltage to light the fluorescent tube 200, and the lighting action is completed.

3. If the fluorescent tube 200 is not lit when the lighting action of 2. occurs due to other reasons, the midpoint voltage of the first voltage dividing resistors 109 and 110 is greater than the Zener Voltage of the Zener diode 108, Then repeat steps 1. and 2. until the fluorescent tube 200 lights up.

4. If the repeated action of 3. still can not make the fluorescent tube 200 light, it can be judged that there must be a problem with the fluorescent tube 200, the ballast 400 and its circuit accessories. In order to protect the safety of the circuit and the utility model, its automatic The lock circuit (Inter Look Circuit) starts to act, and it is still in the repeated lighting action of 3. Its high voltage is charged through the Zener diode 114, and the second voltage dividing resistors 112, 113 are charged in the capacitor 118 at the second time until the second When the storage voltage of the constant capacitor 118 reaches the conduction of the self-locking transistor 115, the collector-emitter of the self-locking transistor 115 makes the voltage of the base of the transistor 106 never reach the conduction of the collector-emitter of the transistor 106. At this time, the utility model Complete the protection function of self-locking, if when the self-locking function of the present utility model fails, it is to have fuse or be placed on the thermal fuse near this circuit MOSFETS118 road to insure, in order to avoid accidental disaster.

As shown in Fig. 4, it is the time zone when the circuit of the present invention performs the heating of the fluorescent tube 200 for the first time in District 1, and the lighting action, and its R point is the two points of Fig. 3A and B of the circuit of the present invention when the MOSFETS118 is turned on. The waveform observed with an oscilloscope at the end, the S point is the ignition voltage diagram of the fluorescent tube 200, the R point and the S point in the 2 area of Figure 4 have the same meaning as the 1 area, and the K point behind it is the third consecutive time, the fourth time Time... and so on to show the action of warming and lighting the fluorescent tube 200. Area 3 in Fig. 4 is the voltage waveform at both ends of A and B in Fig. 3 when the self-locking circuit operates.

As shown in Figure 5, it is the circuit diagram of the fluorescent lamp device of the present invention. When one end of the AC power supply 700 passes through the half-wave rectifier diode 601, a half-wave rectified voltage is obtained in the step-down resistor 603 and the filter capacitor 602, and the voltage is sent to the Zener diode. 604 and the filter capacitor 605 and the positive voltage terminal of the three-terminal voltage regulator 606 and OP AMP IC 615 and 618, because of the filtering effect of the filter capacitor 602 and 604, it is said that the output terminal of the three-terminal voltage regulator 606 can obtain a stable The DC voltage is supplied to the voltage dividing resistors 608 and 609 respectively, so that the negative input terminal of the first group of OP AMP IC 615 obtains a stable reference voltage, and the other group passes through the voltage dividing resistor 621 and the photocoupler 622. Output side, so that the negative input terminal of the second group of OP AMP IC 618 gets a reference voltage, and also through the voltage dividing resistors 619 and 620, so that the positive input terminal of the second group of OP AMP IC 618 gets a stable reference voltage value , the input voltage of the positive input terminal of the OP AMP IC 615 of the first group is obtained from the midpoint of the voltage dividing resistors 623 and 624, and the function of the filter capacitor 614 is to make the midpoint voltage of the voltage dividing resistors 623 and 624 a DC voltage; Assuming that the voltage of the power supply rises gradually from zero, the DC voltage at the midpoint of the voltage dividing resistors 623 and 624 also gradually rises. When the negative input terminal voltage of the first group OP AMP IC 615 is greater than the positive input terminal, the first group OP One output terminal of AMP IC 615 has no voltage output, when the voltage of the positive input terminal rises to be greater than the voltage of the negative input terminal, the output terminal of the first group of OP AMP IC 615 has a positive voltage output, which is sent to the photoelectric gate through the drop-down resistor 616 The light-emitting diode of the fluid coupler 617, so the output terminal of the photoelectric thyristor coupler 617 is turned on, and the electronic fluorescent lamp starter 100 starts to operate, first heated by the fluorescent filament, and ignited until the fluorescent lamp tube 200 shines; when the fluorescent tube When 200 lights up, the input LED of its optocoupler 622 lights up, and its voltage is obtained from the voltage at both ends of the time constant capacitor 110, and the voltage at both ends of the time constant capacitor 110 passes through the drop-down resistor 116 to make the LED glow, so the voltage on the output side of the photocoupler 622 Close to about 0.4V, at this time the positive input terminal voltage of the second group OP AMP IC 618 is greater than the negative input terminal, so the output terminal outputs a positive voltage to the gate of the silicon controlled rectifier 613 through the diode 610 to the drop resistor 611, so that The silicon controlled rectifier 613 is turned on, at this time the voltage of the positive input terminal of the first group of OP AMP IC 615 is lower than the negative input terminal, so the thyristor of the photoelectric thyristor coupler 617 is in the OFF state, and at this time the electronic fluorescent lamp starter 100 is in the OFF state state, without power consumption, that is, when the fluorescent tube 200 lights up, its electronic fluorescent lamp starter 100 circuit is in an OFF state; High power factor value, at the same time the AC power supply 700 is also connected to both ends of the low voltage side of the ballast 400, the high voltage side of the ballast 400 is connected to the AC end of the bridge rectifier 300, and the positive terminal of the bridge rectifier 300 Output a full-wave rectified voltage with a frequency of 120HZ. The purpose of the utility model to connect this bridge rectifier 300 is to minimize the flicker of the fluorescent tube 200.

As shown in Figure 5, when the fluorescent tube 200 is lit, the voltage waveforms at both ends 1 and 2 of the fluorescent tube 200 are shown in Figure 6(A). At this time, the output terminal of the third group of 0P AMP IC 806 outputs a voltage through the two piezoelectric groups 804 and 805, so that the transistor 803 is turned on, and the coil of the relay 802 is activated at this time, so that the contact of the relay 802 is connected. At this time, the high-voltage capacitor 801 is connected in parallel to both terminals 1 and 2 of the fluorescent tube 201, and its voltage waveform is shown in Figure 6(B). The DC component rises, and the height of its pulse voltage also increases. Lifting, if you want to obtain the waveform DC voltage and pulse wave height as shown in Figure 6(B), you can choose the appropriate capacitance value of the high-voltage capacitor 801. When the AC power supply voltage rises, the midpoint voltage of the two voltage divider resistors 809 and 810 rises, so that the voltage of the negative input terminal of the third group OP AMP IC 806 rises, and the voltage of the negative input terminal is higher than the voltage of the positive input terminal , the output terminal of the third group OP AMP IC 806 has no voltage output, the contact point of the relay 802 is turned from ON state to OFF state, and its high-voltage capacitor 801 is separated from the 1 and 2 ends of the fluorescent tube 200; the reference voltage of its positive input terminal It is obtained from the midpoint of the two voltage divider resistors 807, 808. One of the two ends of the two voltage divider resistors 807, 808 is connected to the output end of the three-terminal voltage regulator 606, and the other end is grounded.

As shown in Figure 7, the bridge type current circuit 300 of Figure 5 of the present invention is moved to the two ends 201, 202 of the fluorescent tube 200, and the AC ends of the bridge type rectifier circuit 300 are respectively connected to the two ends 201, 202 of the fluorescent tube 200 , and the positive and negative terminals of the bridge rectifier circuit 300 are connected to the A terminal and the B terminal of the electronic fluorescent lamp starter 100. At this time, the output terminals of the ballast 400 are respectively connected to the 1 and 2 ends of the fluorescent tube 200, and the relay The contacts of 802 and the high-voltage capacitor 801 are also the same as those in Fig. 5, and are respectively connected to the two ends of 1 and 2 of the fluorescent tube 200; the circuits of other phase-advancing capacitors 500, control circuit 600 and AC circuit 700 are all the same as those in Fig. 5; when Fig. 7 When the relay 802 is inactive, the voltage graph at both ends 1 and 2 of the fluorescent tube 200 is shown in Figure 9 (A). The two ends of 201 and 202 are connected, and the voltage graph is shown in FIG. 9(B). This voltage can increase the height of the fluorescent tube 200.

As shown in Fig. 8, the contacts of the high-voltage capacitor 801 and the relay 802 of the bridge rectifier circuit 300 and the brightness compensation circuit 800 of the present utility model are moved from the 1 and 2 two ends of the fluorescent tube 200 to the A and B two ends. The output terminal of the converter 400 is connected to the 1 and 2 two ends of the fluorescent tube 200; other phase-advancing capacitors 500, the circuits of the control circuit 600 and the AC power supply 700 are all in phase with those of Fig. 5; when the relay 802 of Fig. 8 is inactive, or When the relay 802 operates, the waveforms at both ends 1 and 2 of the fluorescent tube 200 are as shown in FIG. 9(A) and FIG. 9(B) respectively, which is the voltage waveform with the same effect as shown in FIG. 7 .

As shown in Figure 10, the high-voltage capacitor 121, the relay 120 and the step-down resistor 123, the base resistor 118, the transistor 119, the filter capacitor 124, the first Zener Diode 117 and the second Zener Diode 122 are installed in Figure 2 to form a unit device ( unit Device). Its action principle is that when there is an AC voltage (A.C power source) at both ends of the CD, its A terminal has a DC full wave rectified voltage (D.C Full wave Voltage), and its positive voltage terminal (positive VoltageTerminal) voltage passes through the time constant resistor IH( Time Constant Regisitor) charges the time constant capacitor 110, it heats up, ignites until the fluorescent tube 220 shines, the same as the action principle in Figure 2, it has been described in detail before and will not be repeated here. At the Zener Voltage of the first Zener Diode 117, the voltage across the base resistor 118 causes the base (Base) and emitter (Emitter) of the transistor 119 to reach a saturation state (Saturation State), at this time the collector of the transistor 119 (Collector ) and the emitter become ON, and the coil of the relay 120 receives a DC voltage, so that the contact point of the relay 120 changes from normally open (Normal open) to normally closed (Normal Close), and at this time, the high-voltage capacitor 121 is connected in parallel At both ends of the CD, the fluorescent tube 220 is increased in brightness. The action principle of increasing the brightness is the same as the action principle described in FIG. The positive end and one end of the drop resistor 123 (Voltagc Drop Resistor), the P-type end of the second Zener Diode 122 and the negative end of the filter capacitor (Filter Capacitor) are connected to the B end, and the other end of the drop resistor 123 is connected to the A end; When there is no AC voltage across the CD, the voltage across the time constant capacitor 110 returns to zero, so the collector and emitter of the transistor 119 form an OFF state, and the contact of the relay 120 turns into a normally open state, so the two contacts are not connected to the high voltage. Capacitor 121 is connected, and the brightness compensation effect disappears.

As shown in Figure 10, its transistor 119 is often damaged because of the back EMF generated by the coil of the relay 120. Therefore, the utility model is equipped with a protection circuit, which consists of a protection transistor 113, a load resistor 130, and a one-way diode 131. , the base resistor 132 and the emitter resistor 129 of the transistor 119. When the coil of the relay 120 generates a back EMF, the back EMF is from the collector of the transistor 119 to the emitter. A voltage is generated on the resistor 129, and this voltage makes the collector and the emitter of the protection transistor 133 conduct through the base resistor 132, which conducts the base of the transistor 119 to the B terminal of the filter capacitor 124, and the collector of the transistor 119 The emitter forms an open circuit. At this time, the coil and potential of the relay 120 pass through the load resistor 130, and the base of the protection transistor 133 of the one-way diode 131 is connected to the emitter, so that the transistor 119 is protected, and the collector-emitter terminal of the protection transistor 133 is connected to a ZenerDiode134. The Zener Voltage is always smaller than the collector-emitter breakdown voltage of the protection transistor 133 .

The circuit as shown in Figure 11, it comprises: (1) the voltage zeroing circuit shown in Figure 3 is ZenerDiode114, the circuit that two divider resistors 112,113 and transistor 115 are formed, and its operating voltage is by C point through The half-wave voltage of the diode 126 is different from the full-wave rectification voltage shown in FIG. 3 , but the utility model does not exclude the application of the full-wave rectification circuit according to the needs, and is not self-limited. (2) The time constant resistor 109 and the time constant capacitor 110 shown in FIG. 2 . (3) Brightness compensation circuit shown in Figure 10, it comprises step-down resistor 113, smoothing capacitor 124, the 2nd Zener Diode 122, the 1st Zener Diode 117, base resistor 118, transistor 119, relay 120, high-voltage capacitor 121 and new increase The diode 125 of unidirectional effect, its action principle is made up of with shown in Figure 10 and (4) traditional mechanical fluorescent lamp starter 127. When the AC power source 700 has an AC voltage, the voltage across the CD is higher than the lonisation point voltage of the fluorescent lamp starter 127, and the fluorescent lamp starter 127 is turned on to heat the fluorescent tube 200; when the voltage across the CD is low When the ionization voltage is reached, the fluorescent lamp starter 127 is opened, the fluorescent lamp tube 200 is ignited, and the fluorescent lamp starter 127 continues its heating and ignition actions until the fluorescent lamp tube 200 lights up. When the voltage drops, the time constant resistor 109 and the time constant capacitor 110 act, and when the voltage across the time constant capacitor 110 is higher than the Zener Voltage of the first Zener Diode 117, the relay 120 acts, and the high voltage capacitor 121 is connected in parallel to both CDs. At the terminal, the fluorescent lamp 200 brightens. At this time, the fluorescent lamp starter 127 forms an open circuit due to the action of the relay 120, and the lighting procedure of the fluorescent lamp is completed. It must be emphasized that the contact point of the relay 120 is the C contact point. When the fluorescent tube 200 is heated and ignited, the 1 and 2 contacts of the relay 120 are in the ON state, and the 1 and 3 contacts are in the OFF state. ON state.

Based on the above, the main switch circuit and ignition circuit of the electronic fluorescent lamp starter applied for in the present utility model, and the voltage zeroing part of the additional design are also the first in the world; and in the fluorescent lamp device, the design of its control circuit is also the world's first It is the first in the world; as for the existence of the bridge rectifier 300, the bridge rectifier 101 in Figure 2 can be omitted; the design of a set of fluorescent lamp devices and the brightness compensation circuit is also the first in the world, and the single fluorescent lamp starter is equipped with a brightness compensation circuit. The first in the world, according to the provisions of the Patent Law, it actually meets the requirements of a new type patent, so the patent application is filed according to law.

Claims (8)

1. A fluorescent lamp device, characterized in that it comprises an electronic fluorescent lamp starter, a phase-advancing capacitor, a ballast, a bridge rectifier, a fluorescent lamp, a brightness compensation circuit and a control circuit, and is powered by an AC power supply. 2. The fluorescent lamp device as claimed in claim 1, characterized in that: its electronic fluorescent lamp starter includes a time control circuit, a main switch circuit and an ignition circuit to control the rapid ignition and heating of the fluorescent lamp equipment, wherein at this time The control circuit, the main switch circuit and the ignition circuit are connected into a parallel circuit, and the connection to the fluorescent tube is a two-terminal joint; The signal transmission between the timing control circuit and the ignition circuit is through direct coupling; The control of the ON and OFF states between the ignition circuit and the main switch circuit is directly coupled, and the ignition time is synchronized with the peak value of the heating current; The zero return circuit included in the time control circuit depends on the ZenerVoltage value of the Zener diode of the zero return circuit, and the time control circuit and the Zener voltage diode of the zero return circuit are connected through coupling. 3. The fluorescent lamp device as claimed in claim 2, characterized in that: the transistor of the time control circuit of the electronic fluorescent lamp starter is NPN type; The time constant resistor is connected in series with the time constant capacitor, the point of which is connected to the transistor collector of the zero return circuit, the emitter is connected to the negative terminal, the base is connected to the midpoint of the two voltage divider resistors, and the P-type terminal of the Zener diode is connected to The positive voltage terminal of point A, the N-type terminal is connected to one end of the voltage-dividing resistor, and its voltage-stabilizing diode is connected in series with the two voltage-dividing resistors, and its zero-returning circuit transistor is NPN type. 4. The fluorescent lamp device as claimed in claim 2, characterized in that: the electronic fluorescent lamp starter, wherein the main switch circuit is a normally closed switch circuit composed of a Darlington circuit, and its base is connected with a resistor and a The collector of the transistor and a plurality of diodes are connected to the emitter end of the Darlington circuit and the B connector end, and the connected two ends are connected to the A and B connector ends of the fluorescent tube; the forward voltage of the A contact end of the fluorescent tube is The saturation voltage of the Darlington circuit is added to the saturation voltage of the plurality of diodes. 5. The fluorescent lamp device according to claim 1, characterized in that: its electronic fluorescent lamp starter includes a fuse or thermal fuse, a current limiting resistor, a bridge rectifier circuit, a main switch circuit, an ignition circuit, and a self-locking circuit; The fuse or thermal fuse is connected in series between the input terminal of the electronic fluorescent lamp starter and the current-limiting resistor; The current-limiting resistor is designed to limit the current value of this circuit, and its resistance value depends on its needs, not self-limiting; The AC terminal of the bridge rectifier circuit is connected to the current-limiting resistor terminal of the electronic fluorescent lamp starter, and its positive and negative terminals are connected to the main switch circuit, ignition circuit, and self-locking circuit. For different types of fluorescent tubes, it can also be changed to a half-wave rectifier circuit; The main switching circuit is composed of MOSFETS semiconductors, the drain terminal is connected to the positive terminal, the source terminal is connected to the negative terminal, and the gate is directly connected to the output terminal of the ignition circuit to perform the lighting voltage required for the heating and brightness of the fluorescent tube. ; The ignition circuit is composed of two sets of transistor circuits with inverting function and the first voltage divider resistor, Zener diode and first time constant capacitor. The function of the first voltage divider resistor is to identify the unheated voltage and heated voltage of the fluorescent tube And the lighting voltage, providing the Zener Voltage setting standard for setting the Zener diode, and the first time constant capacitor controls the heating time of the fluorescent tube. The components of this circuit are all connected by direct coupling, and the first time constant capacitor The positive terminal of the self-locking circuit is connected with the self-locking transistor base of the self-locking circuit to protect the circuit of the utility model and the safety of the fluorescent tube, ballast and other circuits. After several times of lighting, the lighting action of the fluorescent tube is unsuccessful, and the self-locking circuit produces a self-locking function. The circuit connections of the Zener diode, the voltage dividing resistor, the second time constant capacitor and the self-locking transistor are all adopted Connected in a direct coupling mode, the collector of the self-locking transistor is connected to the positive terminal of the first time constant capacitor to perform the self-locking function; The circuit composed of the first voltage dividing resistor of the ignition circuit, the voltage stabilizing diode, the first time constant capacitor, the self-locking circuit voltage stabilizing diode, the second voltage dividing resistor and the second time constant capacitor is interchangeable. 6. The fluorescent lamp device as claimed in claim 1, characterized in that: the circuit of the first group of OP AMPICs in the control circuit is to judge whether the AC power supply voltage reaches the set voltage value, and its voltage value is obtained from the AC power supply voltage through the diode After the half-wave rectification, it is connected to the two voltage divider resistors, and its voltage value is taken from the midpoint of the two voltage divider resistors. The middle point is connected with a filter capacitor, so it is said that the voltage is a direct voltage, and this DC voltage is connected to the first group The positive input terminal of OP AMP IC, the components of the above circuit are all connected to the coupling mode; The negative input terminal of the first group of OP AMP ICs is connected to the midpoint of the two voltage divider resistors, and the reference voltage is obtained from the output terminal of the three-terminal voltage regulator through the two voltage divider resistors. The output terminal is connected with a filter capacitor, so the reference voltage obtained at the negative input terminal is a DC voltage, and the above circuit components are all directly coupled; The output terminal of the first group of OP AMP ICs is connected to the input side circuit of the drop resistor and the photothyristor coupler, and the drop resistor is connected in series with the photothyristor coupler, and the three are connected in a direct coupling mode; The power supply of the positive and negative input terminals of the second group OP AMP IC comes from the output terminal of the three-terminal voltage regulator, the reference voltage of the positive input terminal is taken from the midpoint of the two voltage divider resistors, and the voltage of the negative input terminal is obtained from the two voltage divider components The midpoint of the two circuit components, one is a resistor, and the other is the output side of the photocoupler, and the two ends of the output side of the photocoupler, and the above circuit components are connected by direct coupling; The output side of the second group of OP AMP ICs is connected to the P-type end of a diode, and its N-type end is connected to one end of the voltage dividing resistor. The midpoint of the two voltage dividing resistors is connected to the gate of the silicon-controlled rectifier, and the The anode is connected to the positive input terminal of the first group of OP AMP ICs, the cathode is connected to the negative terminal, and the components of the above circuit are directly coupled; The output side of the photoelectric thyristor coupler of the first group of OP AMP ICs is connected between point A of the electronic fluorescent lamp starter and the collector of the Darlington circuit; The input side of the optocoupler of the second group of OP AMP ICs is connected to both ends of the time constant capacitor of the electronic fluorescent lamp starter, which is connected in series with a drop-down resistor in a direct coupling manner. 7. The fluorescent lamp device as claimed in claim 1, characterized in that: its AC brightness compensation circuit cancels the bridge rectifier circuit, and one end of the high-voltage capacitor is connected to one end of the output end of the ballast, and the other end is connected to the output end of the relay. One end of the normally open contact, and the other end of the normally open contact is connected to the other end of the ballast output, that is, the high-voltage capacitor is connected in series with the normally open contact of the relay, and the two ends connected in series are connected to the two ends of the ballast output ; Connect the high-voltage capacitor and the normally open contact of the relay in series, and connect the two ends of the series connection to the two ends of the fluorescent tube on the side of the electronic fluorescent lamp starter to form an AC brightness compensation circuit; The electronic fluorescent lamp starter includes a bridge rectifier. The bridge rectifier has the same function as the bridge rectifier circuit. Therefore, the utility model can only use one set of bridge rectifiers instead of self-limiting the aforementioned bridge rectifiers. 8. The fluorescent lamp device as claimed in claim 1, characterized in that: its AC brightness compensation circuit consists of a time constant resistor, a time constant capacitor, a first Zener Diode, a base resistor, a transistor, a relay, a second Zener Diode, and a filter Composed of capacitors and high-voltage capacitors, it can be combined with the electronic fluorescent lamp starter of claim 2 without self-limitation; One end of the time constant resistor is connected to the positive terminal, the other end is connected to the positive terminal of the time constant capacitor and the N-type terminal of the first Zener Diode, and the negative terminal of the time constant capacitor is connected to the negative terminal, all of which adopt the direct coupling method connect; The P-type terminal of the first Zener Diode is connected to one end of the base resistor of the transistor, the other end of the base resistor is connected to the negative terminal, the emitter of the transistor is connected to the negative electrode, and the collector of the transistor is connected to one end of the relay coil. The other end of the coil is connected to the N-type end of the second Zener Diode, the positive end of the filter capacitor and one end of the drop-down resistor, the P-type end of the second Zener Diode and the negative end of the filter capacitor are connected to the negative end, and the drop-down resistor The other end of the battery is connected to the positive terminal, and all its components are connected by direct coupling; One end of the normally open contact of the relay is connected to one end of the filament of the fluorescent tube, the other end is connected to one end of the high-voltage capacitor, and the other end of the high-voltage capacitor is connected to the other end of the fluorescent tube. All components are connected by direct coupling.

Images