TW550976B - Light operating apparatus of discharge lamp - Google Patents

Abstract

A kind of light operating apparatus of discharge lamp is disclosed in the present invention. The invention includes a frequency converter circuit, which converts DC current supplied from the DC power source 1 into high frequency current, and is constructed by semi-electric-bridging circuit provided with a pair of switching devices 2, 3; and plural discharge lamp load circuits L100, L110 connected in parallel, which utilize the high frequency current from the frequency converter circuit to operate the discharge lamps 6, 10. Each one of the discharge lamp load circuits L100, L110 includes the followings: the choke coils 5, 6; the serially connected circuit between the discharge lamps 6, 10, and the coupling capacitors 8, 12; and the capacitors 7, 11 connected in parallel to the discharge lamps 6, 10. In addition, the discharge lamp operating apparatus includes the followings: the secondary windings 5a, 5b, 9a, 9b; plural voltage detection circuits P100, P110 to detect the voltage values between peak-values; and the protection circuit H100. A pair of the secondary windings is respectively disposed at the choke coils 5, 6 of each one of discharge lamp load circuits L100, L110, and is respectively connected to a pair of the switching devices via the current limit devices 14, 16 so as to output the voltage for driving a pair of switching devices 2, 3. Plural in-between-peak-values voltage detection circuits P100, P110 are respectively used to detect the voltage values between peak-values of the voltage occurred at the secondary windings 5a, 5b, 91, 9b. The protection circuit H100 is used to conduct the voltages detected by plural in-between-peak-values voltage detection circuits P100, P110, or to make the frequency converter circuit stop oscillation when the voltage exceeds the predetermined value.

Description

550976 V. Description of the invention (1) Technical field of the invention The present invention relates to the use of a high-frequency electric circuit-type detection circuit detection lamp assembly i for self-excited inverter circuits. Cheap and small. A discharge lamp lighting device with a lamp-like evil and protection circuit. Conventional technology Fig. 5 shows a circuit diagram of a conventional lamp & a + also + enemy lamp lighting device. In Figure 5, 1 is an ancient 4 & < DC power source obtained from a commercial power supply, and 2 and 3 are MOSFETs that constitute the inverter circuit; ^ ^ ^ ^ ^ Replacement parts, L1 0 0, L11 0 is a discharge lamp load circuit in parallel. Discharge lamp | Gong Beiji circuit L100 is composed of anti-current coil 5, discharge lamp 6, and lightning lamp 7 connected in parallel with discharge lamp 7. The valley is 7 and the coupling capacitor 8 is formed. The discharge lamp load circuit L110 is composed of a current-proof coil 9, a discharge lamp 10, a discharge lamp 10, and a closely connected capacitor 11 and a coupling capacitor 12. 4 is a current transformer (hereinafter referred to as CT) connected between the connection points of the two switching elements 2 and 3 and the connection point of the discharge circuit of the discharge lamp load circuit L1 0 0 and L110 'the secondary winding resistance 4a, 4b is connected between the gate and source of switching elements 2 and 3 via resistor 13 and resistor 14 (in order to show the combination of primary winding and secondary winding of CT4, shown in dotted lines), so that according to the illustration • The polarity of the marks alternately drives the switching elements 2 and 30N / OFF. In addition, the illustration of the built-in special price diode and the starting circuit for starting the inverter is omitted between the gate and source of the switching elements 2 and 3 in parallel. P1 〇〇 is to detect the connection point al 00 of the anti-current coil 5 and discharge lamp 6 of the load circuit L1 〇00 of the discharge lamp and the negative pole bl 00 of the DC power supply 1 (at the two pole

2148-4768-PF (N) .ptd Page 5 550976 V. Description of the invention (2) The peak-to-peak voltage (peak t0 ") between the anode and the body of the body Detection circuit, p 丨 丨 〇 is used to detect the connection point & 1 of the anti-current coil 9 and the discharge lamp 丨 〇 acting on the discharge lamp load circuit LI 1 0 and the negative pole bl 1 〇 (at the second pole The figure near the anode of the body 55) Between = peak-to-peak voltage detection circuit. F-peak-to-peak voltage detection circuit P100, 50, 51 series capacitor = 1 ^ Connect to the negative pole of DC power supply 1 and the other end of 51 to react; 1,;, to the connection point of lamp 6. 52 series diode, anode and straight point ^ connected ^. Pole connection, cathode and capacitor 50 and The connection of the capacitor 51 utilizes this structure, and it is carried on the anode of the diode 57 in accordance with the inverse ratio of the static thunder and lightning of capacitor 54 and capacitor 电 53. The peak-to-peak voltage between the connection point 3100 and the negative pole M10 of the DC power supply 1. The cathode connection of the power source ΓΛ ^ 6Λ = _57 is connected at its Point and DC current voltage detection peak S value connected to the gate / plant container 58 'The two ends of the capacitor 58 are relatively high. KG: Detection circuit P1 °°, P11. Among the voltages, 1 0 〇 is to protect the thunder government ^ l, the pole resistance 59 and the DC power source are connected through the connection point of the resistor 60 and the resistance 59. The 62 series gate and the resistance 60 are electrically connected, and the anode and the second pole are: the cathode Connected to the cathode of the negative pole switching element 3 of the DC power supply 1 and connected to the cathode of the anode. The anode of the diode 63 is connected. The anode of the gate fluid 62 is connected via the resistance diodes 56 and 57: f: circuit , 61 series Zener diodes, whose cathode is connected to the thunder and thunder, and the factory connection, from its anode through the resistor and 2148-4768-PF (N) .ptd page 6 550976 5. Description of the invention (3) 6 4 and The positive pole connection of the DC power supply 1. "“ 外 '"Fig. 6 shows a configuration example of the DC power supply 1 when a DC power is obtained from a commercial power supply. Brother Yue, as shown in Figure 6, is constructed from commercial power supply 1 & output AC, [: cai: body bridge lb after full-wave rectification 'is smoothed with a smoothing capacitor ic :; for DC power output to the load circuit. The operation of the circuit of the conventional example shown in Fig. 5 will be described below. In Figure 5, when DC power is applied, the switching elements 2 and 3 are driven by high-frequency interaction so that the discharge lamp moves the circuit. For example, if the discharge lamp 6 is consumed due to the consumption of the discharge substance of the filament, etc. At the end of the period, the voltage across the discharge lamp 6 is higher than that during normal lighting, and the voltage between the peak voltage detection circuit P10 () detects a change in the voltage, and the anode voltage of one pole 56 rises. The voltage of capacitor 58 is also selected. Zener II 61, and resistance 59, sluice ship = voltage of capacitor 58 obtained when the discharge lamp 6 is normally lit = turn on, in the case of voltage rise like the end of the life of the discharge lamp, j is used for capacitors The resulting voltage becomes conductive. If the gate fluid 62 becomes conductive, the secondary winding 4b from m passes through the resistor 13 to the ㈣ element 3 ^ The current of the gate is bypassed via the diode 63 and the gate fluid 62, the switching element 3 becomes non-conducting, and the inverter circuit Stop oscillation. When the oscillation is stopped for a long time, the current is kept flowing to the brake fluid 62 'through the resistor 64 until the DC power supply 1 is turned off and then sent to the brake fluid 62'. This prevents the discharge lamp 6 from operating in a state where abnormal discharge continues. In addition, as described above, the case where the discharge lamp 6 is not normally discharged,

550976 V. Description of the invention (4) However, the discharge is normal. However, when lighting, for example, about 125V, because the voltage is about the same, the parts need to be large. For the gate between b 100, it is necessary to make the capacitor but the problem is also identified according to the same. In addition, the same. In addition, when the voltage is always turned on other than the voltage, and the conditions 〇1, 〇 are not normally discharged, and any discharge lamp is not it's the same, it can prevent the abnormal discharge from continuing to operate in the above configuration at the rapid start. Capacitors, which constitute a sharp and expensive peak-to-peak voltage, must be appropriate. Two voltages of 50 to 50 are at a normal partial voltage ratio to make the voltage across the discharge lamps 6, 10, and about 95v in a normal moving fluorescent lamp 40W. In the voltage detection circuit p100 of the voltage between the 32WHF device and the electric peak between the two ends of the discharge lamp 6, 10, the voltage detection circuit P100, because of the voltage of a100 and the voltage Act on the gate fluid 6 2 Select the capacitance ratio between capacitor 51 and capacitor 50. The terminal will divide the high voltage between alOO and blOO. The detection voltage obtained during lighting and abnormal lighting becomes smaller. It is difficult to fully meet the above-mentioned matters. The voltage between the peak-to-peak voltage detection circuit p 丨 丨 〇 is also coupled to the voltage of the valleyr g in addition to the discharge lamp 6 because of the voltage acting between alOO and bl 〇. Detection voltage during rain lighting The difference cannot get a large value. ^, '[The matter for the peak-to-peak voltage detection circuit P1 1 0 is also I 2 \ The combined current of the lamp load circuits L100 and L110 flows to the grass-falling side and lights 6 or discharge lamps 10 due to When the discharge lamp of a certain party is dismantled due to the failure caused by the life, the current flowing to CT4 is reduced, so CT4bis

2148-4768-PF (N) .ptd Page 8 550976 V. Explanation of the invention (5) The voltage of the secondary winding is also the problem that the peak voltage also changes when the discharge lamp of the inverter's electric load circuit is abnormally lit. The present invention In order to solve the problem of cheap and small parts of the circuit, the present invention is not provided. The output power of the circuit is measured during normal lighting, and the protection circuit is also provided. The present invention is provided for the normal lighting and abnormal voltage of multiple discharges. The difference and the installation change can be the same. The present invention is set to be useful for the difference between the output voltage of the positive test circuit of the discharge lamp under multiple branches. Among the third lamps that operate at different times and different pressures, all the conditions of the lamp-like condition are checked. The fourth discharge lamp is often lit. The purpose is to improve the reliability with respect to the outside when lighting is often performed. The purpose is to remove the condition of the peak discharge lamp of a certain state and measure the abnormal state. The purpose is to remove the and abnormal lighting and install all the voltage measuring circuits. When the detection is reduced, the driving voltage of the switching elements 2 and 3 is reduced, the oscillation frequency of the circuit is changed, and the residual discharge lamp current is also changed. As a result, it has voltage detection circuits P1 00 and P11 0 during normal lighting and between values. The first purpose of the obtained electricity is to provide the spike-to-peak voltage detection obtained by constituting the peak-to-peak voltage for a discharge lamp lighting installation. §Fl has sufficient margin for a discharge-lamp lighting installation to detect the remaining There is no difference in the detection voltage between the output conditions of the voltage detection circuit between the discharge lamps. For one type of discharge lamp, one can be installed, and the detection of the condition of the discharge lamp between the peak-to-peak voltage detection of the remaining state should be simple and convenient. Discharge lamps

Page 9 550976 V. Description of the invention (6) Summary of the invention The south frequency of the half-bridge circuit of the DC power supply of the present invention lies in the series winding resistance of the discharge capacitor, and the sharp voltage generated in the resistance of the current-limiting element exchange element. The detection circuit stops oscillating. Small and convenient, high voltage detection voltage protection circuit, high-frequency circuit of half-bridge circuit of DC power supply, its special discharge lamp and container; the discharge circuit provided by the discharge lamp constitutes a current to make the lamp discharge The electric circuit of the load and the negative part of the discharge lamp and the voltage; the peak-to-peak value is detected by the electricity. Therefore, the DC circuit of the discharge lamp that is operated by the relatively normal difference between the normal lighting of the sharp parts and the discharge circuit constitutes a current. Coupling Capacitor: The frequency conversion lamp point converted by the secondary winding lighting device includes the voltage between the discharge load circuit and the switching value; the voltage is converted to the frequency conversion lamp point when the voltage exceeds the peak value and when it is different from the external harsh lighting device. The series resistance of each amplifier is in place, including the high-frequency electrical circuit lamp, the anti-streamline lamp, and the anti-element connected voltage detection and protection in parallel. The pre-voltage detection includes: the cause of direct current and the negative circle of the electric lamp, the The capacitor current coil is connected to the wheel circuit, the circuit, and the fixed-time measurement circuit. The power source has a _ using a lamp from the plant circuit; Check the structure of the change at the tip, and the inverter will be switched by the pair. Its characteristics and coupling include: the second pair, through which the circuit parts of the frequency converter can be taken at the normal point. The electrical noise between the peaks and peaks obtained at the time of the lamp has sufficient margin and can be set up, including: a DC power supply, a pair of switcher circuits that will be driven by the high-frequency current, and the use of the lamp from the inverter. A plurality of discharge lamp load electric lamp load circuits connected in parallel include a current-resistant coil, a connecting circuit, and the anti-current lines of each discharge lamp load circuit connected in parallel with the discharge lamp.

2148-4768-PF (N) .ptd

Page 10 550976 V. Description of the invention (7) Each circle is provided with a material "quota" connection ", and the current limit element and the-pair switch-, the gas drive drives the pair of switch elements, -For the switching voltage detection circuit I, several spikes ^ ^ each detect the voltage at the acupoint of the secondary Poyang a; and a protection circuit, ... ^ ^ The voltage detected by the spike peak circuit Slowly $ φ p 稷 Several peak-to-peak voltage detection electrical circuits stop vibrating η: Or: Rei will make the frequency conversion when it exceeds a predetermined value; Available :: Broadcast between peak-to-peak voltage detection circuits: J 才 木Use small and cheap parts. The components of the electrical tower are at the output of the voltage detection circuit between peaks and peaks. When the lights are turned on and the voltage is settled, the peak voltage obtained when the voltage is normal. The reliability of the difference between the voltage detection voltage and the voltage between the ancient and ancient times. 』The movement of the compliance circuit is also due to the load circuit of each discharge lamp and the peak self-standing 66 but the mv dry-resistance voltage detection circuit ^ sighed 'When removing a discharge lamp, all dreams μ + It is also possible to detect abnormal lighting conditions under the same conditions as in the case of "i" in January. In addition, the peak-to-peak voltage detection circuit includes: each; a series circuit of a series of electricity; and a diode, and a capacitor σ chest · face ^ 狎 龟 Θ one of the current state of the capacitor and the old one The capacitance value of the capacitor of the one side of the diode in parallel is set to be less than about 4 times the capacitance value of the side of the capacitor. Therefore, there are changes

Movement 2 ambient temperature fluctuation, external noise, etc. ’can also be discharged and charged stably.

"Identification during lighting and abnormal lighting. The J-to-peak voltage detection circuit includes a resistance inserted between the connected secondary winding and the capacitor. Therefore, the parasitic oscillation induced by the inductive component of the current-resistance coil and the capacitive component of the voltage detection circuit between spikes can be suppressed, enabling the discharge lamp to be detected during normal lighting and abnormal lighting &

2l48-4768-PF (N) .Ptd Page 11 550976 V. Description of the invention (8) The pressure difference becomes large. DC power supply recognition: 烚 Lighting device 'includes DC power supply, which will be powered by the half of the unit; DC conversion to high-frequency current is provided by the high-frequency, high-frequency switching circuit, lightning, and frequency conversion The inverter circuit and the use of the inverter circuit, and "ί !: make the discharge lamp turn on a plurality of discharge lamp load discharge lamps in parallel and narrative two" each discharge lamp load circuit includes a current-resistant coil, container; including: two Ergu is a series circuit and a coil connected in parallel with the discharge lamp, each of which is provided with one person and a% resistance. The anti-streamline parts of each discharge lamp load circuit are connected, and γ + π gas is respectively passed through the current limiting element and the pair. Switch the voltage between the element and the switching element; the voltage of the common peak voltage: Measured in these, the combined detection circuit of the secondary winding occurs in the "β 'and the protection circuit, the voltage between the peak and peak Vibration is stopped. Because the inverter circuit is stopped and set between the peaks and peaks, the setting is plural and the voltage between peaks and peaks is detected. Lei Mei Qi. , And multiple resistors, each white , ≪ The inferior valley is between the resistance and the capacitor; set the value of the multiple secondary winding capacitances of the harmonious group to the other party: electricity; About 4 times or less. The voltage detection circuit can be made compact and inexpensive. The large peak interval includes a connection point of a pole body's self-discharge lamp and a coupling capacitor, "the positive and negative poles of the power supply are connected separately; the light-on capacitors are determined ^ 2148-4768-PF (N) .ptd 12th Page 550976 V. Description of the invention (9) The capacitance value allows the current to alternately flow from the diode to the power source during each half cycle of the oscillation when the discharge lamp is normally lit. Therefore, the current flowing to the load circuit of the discharge lamp can be prevented from increasing. Embodiment of the Invention Embodiment 1 FIG. 1 is a circuit diagram showing the structure of a discharge lamp lighting device according to Embodiment 1 of the present invention. In Fig. 1, 1 is a DC power source obtained from a commercial power source, 2 and 3 are switching elements composed of a channel MOSFET which constitutes a frequency converter circuit, and L100 and L110 are discharge lamp load circuits connected in parallel. The discharge lamp load circuit L1 0 0 is composed of a current-proof coil 5, a discharge lamp 6, a capacitor 7 connected in parallel with the discharge lamp 6, and a coupling capacitor 8. The discharge lamp load circuit L11 0 is composed of a current-resistant coil 9, a discharge lamp 10, and a capacitor 丨 丨 and a coupling capacitor 丨 2 connected in parallel with the discharge lamp 10. Secondary windings 5 a, 5 b, 9 a, and 9 b are respectively set in the current-resistant coils 5 and 9 of the discharge lamp load circuits L1 00 and L110, and the secondary windings pass the resistances 3i 5 and the resistances 14 and 16 Connected between the gate and source of the switching elements 2 and 3 (in order to show the combination of the primary winding and secondary winding of the anti-current coils 5 and 9 with a one-dot chain line and a dotted line), so that • The polarity of the symbol alternately drives the switching elements 2 and 30N / 0FF. Here, the illustration of the built-in equivalent diode and the start-up circuit for starting the inverter in parallel between the gate and source of the switching elements 2 and 3 is omitted. In this case, in the rated power phase of the discharge lamp 6 and the discharge lamp, the circuit constant of each discharge lamp load circuit L100 & L110 is selected as the phase month.

550976

When the rated powers of the discharge lamp 6 and the discharge lamp 10 are different, the resonance frequencies of the discharge lamp load circuits L1 00 and L11 0 are set to be approximately the same or each of the anti-coil coils 5, The secondary winding voltage of 9 is approximately equal. —P100 is used to detect the voltage between the peak and peak voltage of the resistance coil 5b of the discharge lamp load circuit L1 00-person, the voltage between the peak and the voltage 5b). The peak = the voltage detection circuit, P 丨 丨 〇 is used to detect the discharge The lamp load circuit 10 is the secondary winding 9 b of the reactor coil 9 and the peak-to-peak voltage detection circuit of the peak-to-peak voltage. The circuit "Plunging in voltage" P1O, i5o, i5i is a series of electric °° valley 50 terminal is connected to the negative pole of DC power supply 1 and the capacitor is connected. The other end is connected to the secondary winding 5b of the anti-current coil 5b The connection point 1 5 2 of the resistor 13 is a polar body, the anode is connected to the negative pole of the DC power supply 1, and the capacitor 150 is connected to the connection point of the capacitor 151. The structure of the negative electrode connected to the cathode and the coffin is in accordance with the structure of the capacitor 151 and the capacitor 150. The electrostatic capacitance value is inversely proportional to the peak-to-peak voltage between the anode and the anode of a pole body 1 5 6. Take out the anti- * coil 5: between the secondary winding resistance and the peak-to-peak voltage detection Circuits P110, 153, and 154 are series-connected electric powers> 6 ^ is 1 5 3 of ^ — Net mouth is good 6 Φ, ε 1 a Negative connection and reactance of small straight-line power supply I = ring_9 of The two-to-two domain resistance is connected to the connection point of the resistance 15. 1 5 5 is a pole body's anode and the capacitor is connected to the negative electrode of the capacitor 151, the cathode is 2148-4768-PF (N) .ptd Page 14 550976 5 、 Explanation of invention (π) With this structure, according to the static value of capacitor 154 and capacitor 153, i L dagger on diode 157 < Anode removal ☆ secondary winding resistance of current coil 9; voltage between spikes. ^ I 和 间

The cathode of diode 156 and the diode 157 are connected, and a capacitor 158 is connected between the negative points of the current source 1 and the capacitor 158. In the straight line of the capacitor 158, a DC voltage detection circuit is used to detect the peak-to-peak voltage detection circuit ρι〇〇 and? Among the 10%, the peak of the higher voltage. ^ K HI 00 is a protection circuit. When the voltage detected by the peak-to-peak voltage detection circuit ρ〇〇, P110 exceeds a predetermined value, the inverter circuit will stop vibrating. 6 1 series Zener diode, its cathode and diode 丨5 6 is connected to the connection point of 5 7, and is connected from the anode to the negative pole of the DC power source i through a resistor 60 and a resistor 59. The 62 series gate and the gate 60 are connected to the connection point of the resistor 61 with the cathode connected to the negative pole of the DC power supply 1 and the anode connected to the cathode of the diode 63. The anode of the diode 63 is connected to the gate of the switching element 3. The anode of the self-braking fluid 62 is connected to the anode of the DC power source j via a resistor 64. The operation of the discharge lamp lighting device according to the embodiment of the present invention will be described below with reference to FIG. " As shown in Fig. 1, when DC power is applied, the switching element 2, 3 is driven by the frequency-return parent drive circuit by using a start circuit (not shown), so that the discharge lamp 6, 1 〇 lights 0 ^ Here, for example, if When the discharge lamp 6 becomes the end of life due to the consumption of the discharge substance of the filament, the voltage across the discharge lamp 6 rises compared to when the lamp is normally lit, and the anti-coil coil 5 also rises. After detecting the change of the voltage by using the voltage between spikes of the secondary winding 5b provided in the anti-winding coil 5 ρ 丨 〇 〇

2148-4768-PF (N) .ptd Page 15 550976 V. Description of the Invention (12)

The anode voltage of U6 rises, so does the voltage of capacitor 158. In addition, the zener diode 61, the resistance and the resistance 59 of the protection circuit H100 are appropriately selected, and the brake fluid 62 is not caused by the normal lighting of the discharge lamp 6, and the voltage of the capacitor 1 58 obtained. Instead, it becomes conductive, and when the voltage rises at the end of the life of the discharge lamp, the voltage obtained by the capacitor 158 becomes conductive. If the gate fluid 62 becomes conductive, the current flowing through the secondary windings 5b, 9b of the reactive current coils 5 and 9 to the gate of the switching element 3 via the resistors 1 3 and 15 passes through the pole body 6 3 and the gate fluid 6 2 Bypassing, the switching element 3 becomes non-conducting, and the inverter circuit stops oscillating. Also, "Stop Vibration" also keeps the current flowing to the brake fluid 62 through the resistor 64, and maintains this state until the DC power source is turned off and then on again. This prevents the discharge lamp 6 from operating in a state where abnormal discharge continues. In addition, as described above, the case where the discharge lamp 6 is not normally discharged, but the case where the discharge lamp 10 is not normally discharged and the case where any of the discharge lamps are not ^ 4 discharge, can also prevent the abnormal discharge from continuing. The state ruler is here, as long as it is selected as the secondary winding 5b, 9b of the anti-current coils 5, 9

t is larger than the threshold voltage between the gate and the source of the tool changing element 3. It can be far away from the peaks of al 〇〇 and fei 〇〇, aii〇 and bl 1〇 as shown in the conventional example in FIG. 5. Inter-value voltage detection circuit? 〇〇, pu〇 is sufficiently small, and the peak α ^ circuit ρ 1 ο ρ ρ 11 ο can be used as a component with a small voltage resistance, a type, and an inexpensive component. And the voltage detection circuit ρι〇〇 between spikes, because

550976

The secondary winding 5b does not include the normal lighting of the discharge lamp 6, and the voltage component of the coupling capacitor 8 which is small. The difference in the detection voltage at the time of the lamp can be significantly larger than the external noise and can be fully identified. The time and abnormal lighting voltage, the normal lighting and abnormal points can make the protection circuit H100 even different. The above-mentioned personnel also discharges the peak-to-peak voltage detection circuit p 1 1 〇 and discharges it *, and when 6 or the discharge lamp 10 is dismantled due to a failure caused by life, etc., the discharge lamp load circuit u is also 〇〇 、 ui (

The peak-to-peak voltage of the peak-to-peak voltage when the secondary windings 5b and 9b of the current-resistant coil occur is called 浐 2 thunder and abnormal lighting, § 2; "100, PU0 are also independently set separately. Removed-a lamp: the same situation when the normal light and the two lamps are all installed. J & I is the case where the switching element 3 is composed of M0SFET. Reverse withstand voltage between electrodes is about 20v

Below dUV, the voltage obtained by the secondary winding of the anti-winding coils 5 and 9 ^ and 9 b when the right-hand side turns into an abnormal lighting is smaller than the reverse withstand voltage between its gate and source.

j. Mosfet of element 3 can use cheap and easily available standard products. When Bei Shi ordered the discharge lamp of FU〇 to be lit, the average value of the voltage obtained at the secondary coils 5 and 9 == 165Vp (33〇u, and about 19 · 0VQ_P ( 38 · 0VP_P). In addition, when the capacitor of the voltage detection circuit 1 〇 〇 5 is larger than the capacitance Is 151 ^, and the white knife ratio becomes larger than The voltage obtained at the anode of the diode 156 ..., the inverse ratio becomes smaller, which is obtained when the discharge lamp is normally lit and when it is abnormally lit.

Page 17 550976, description of the invention (14) The voltage difference also becomes smaller according to its inverse ratio. In the case of the above-mentioned FL40 discharge lamp, the detection voltage difference between normal lighting and abnormal points, = t becomes 5 Vp_p, but when the detection voltage difference becomes upper = then / 4, it becomes approximately 1 > 2 Vpp or less At this time, when components such as the backing monopolar body 61 of the protection circuit are selected as standard specifications, the protection circuit H1 is affected by changes in the nano-voltage, ambient temperature, and the protection circuit H1. Noise and the like become unstable, so that the detection voltage difference becomes better than 1/4. Circuit Γ disk on the peak-to-peak voltage detection circuit, the capacitor is connected in series with the capacitor !, parallel connection of the diode structure t voltage detection circuit: the secondary winding of 5 :: 3 'will By doing this, the part changes between peaks and peaks, and the ambient temperature changes' 7. By doing this, the lamp can be stably discharged during lamp and abnormal lighting. Parts can be withstand voltage = peak, = voltage detection circuit P1 00, P11 0, the structure of the normal lighting and abnormal lighting parts, but also 'can make the discharge circuit Η 1 0 〇 for the difference between the external detection voltage becomes larger, can be guaranteed, there is a full identification of parts changes . It is also possible to stably perform the discharge lamp positive = ambient temperature fluctuation, external noise, etc. In addition, in the second embodiment, it is possible to identify the dead time and abnormal lighting. In this case, it is possible to set the voltage detection circuit between the peak 2: peak voltage to the complex voltage detection circuit.

550976 V. Description of the invention (5) Example 2 circuit diagram. FIG. 2 is a diagram showing a discharge lamp lighting device according to a second embodiment of the present invention. In FIG. 2, the symbols of the first embodiment are omitted from description. The same parts are given the same in Figure 2, the discharge lamp load electricity and the connection between the discharge lamp 6 and the coupling capacitor 8 ... anode connection of the positive pole; 30 series diode, cathode and 7Af current source The connection point of 8 is connected, the anode is connected to the DC and the coupling capacitor is L π and ", the negative terminal of L egg source 1 is connected. The gram 3 2 and 33 are monopoles, which correspond to the diode 30 and the diode 31 in the negative 100 of the discharge lamp. In the current structure of the enemy lamp, the current in the discharge lamp 6 and 10 decreases by 10, the equivalent impedance becomes larger, and the sharpness of the resonance of the lamp 6 and LUO becomes larger. Electricity,. It is larger than the DC power supply 1 by using ¥ to pass through the two poles to the voltage r: the voltage v can be large to suppress the load at the discharge lamp load-and it has the same effect as in the first embodiment. Fig. Embodiment 3 Fig. 3 shows a circuit of a discharge lamp lighting device according to Embodiment 3 of the present invention. The same symbols as those in Fig. 1 and Embodiment 2 pi 9 η > are assigned the same symbols, and are omitted. Instructions. Figure 2 of the same page 2 of u 2148-4768-PF (N) .ptd 550976 V. Description of the invention (16) In Figure 3, 70 is between the newly inserted capacitor 151 and the secondary winding 5b of the anti-current coil 5 The resistance t, X, 71 is the resistance between the newly inserted capacitor 154 and the secondary winding 9b of the choke coil 9. -Ϊ Structural resistors 70 and 71 are braking resistors, and the inductance components of the anti-current coils 5, 9 Φ2 and the peak-to-peak voltage detection circuit ^ Valley components generate parasitic oscillations different from those of the discharge lamp load circuits L100 and L110.雷 懕 永生 丨 — Misoperation between currents and pulsations = suppression of the two selection resistors 7 ° and 71 at the two ends of the valley 158, which can suppress one of the anti-current coils 5, 9-human resistance 5b, 9b Inductance component and spike

Pio. The parasitic vibration caused by the capacitor components of ， mo is almost covered by the output voltage of the voltage detection circuit P100 and P11〇. “Peak =: Detection of normal and abnormal lighting of the lamp: OK = protection circuit Hm for external noise The difference in the identification of the information is even greater. The embodiment 4 can be guaranteed. FIG. 4 shows the circuit of the discharge lamp lighting device according to the embodiment 4 of the present invention. P1 〇〇 is shared and becomes one. 1 nuclear test circuit PI 1 0 In FIG. 4, the same reference numerals as those in the embodiment 丨 are given the same reference numerals, and the description is omitted. 'Example 2, the same Pj is shared by 2 The peak-to-peak voltage detection circuit, and the series of electric valleyr 150, 151 series, / Arita / A chat, and capacitor 150 are connected in series and parallel 2148-4768-PF (N) .ptd Page 20 V. Description of the invention (17) The bipolar body 152, the newly inserted thunder, and the resistance 71 between the resistance 70 and the resistance \ ^^ and the secondary winding 5b of the fish. # 电 令 为The connection point of 151 and the resistance 7 of the secondary winding 9b are at 0 = two, and the input of the peak-to-peak voltage detection circuit P12〇 passes through ; The secondary winding 5 and 9b of the current coils 5 and 9 are installed at the end of the electric current 〇, the right discharge lamp 6 is normally lit and the discharge lamp 10 becomes a life ί2〇; The detection circuit points the other person on the anode of the diode 1 56 when the normal lighting is abnormal and abnormal 6 1. Mouth 0: 2: peak-to-peak voltage 'if the Zener diode is properly selected Φ 5ΛΗ1 ηη a resistance 5 9 When all the discharge lamps are normally lit, the protection lamp I will not operate. Only when the discharge lamp 6 is normally lit and the discharge lamp 10 becomes 芎; when the abnormal lighting such as 1 period, the protection circuit H100 is activated. Make the frequency converter stop the oscillation of the circuit. It is only normal to strictly protect the discharge lamp 10 from the abnormal discharge of the discharge lamp 6 at the end of its life and the discharge lamp 10, and the hoisting of the discharge lamp, and all the discharge lamps become abnormally lit. The circuit H1 〇〇 action can stop the inverter circuit-it is not necessary to correspond to the discharge lamp load circuits L100, L110, respectively, corresponding to the sighing peak-to-peak voltage detection circuit, which can be made small and cheap. 550976 Schematic illustration Fig. 1 shows a first embodiment of the present invention. Circuit diagram of a lamp lighting device. Figure 2 is a circuit diagram of a discharge lamp lighting device according to a second embodiment of the present invention. Figure 3 is a circuit diagram of a discharge lamp lighting device according to a third embodiment of the present invention. Circuit diagram of a discharge lamp lighting device according to Embodiment 4 of the invention. Figure 5 is a circuit diagram of a conventional discharge lamp lighting device. Figure 6 is a circuit diagram showing a DC power supply of a conventional discharge lamp lighting device. 1 DC power supply, 2 switching Element, 3 switching element, 4 converter, 5 current-resistant coil, 6 discharge lamp, 7 capacitor, 8 coupling capacitor, 9 current-resistant coil, 10 discharge lamp, 11 capacitor, 12 coupling capacitor, 13 resistance, 14 resistance, 15 Resistance, 30 > 3, 32 > 33 61 ^ 62 ^ 63 Dipole, 152, 156 Diode symbol description P1 0 0, P11 0 Inter-peak voltage detection circuit, L100, L110 discharge lamp load circuit,

2148-4768-PF (N) .ptd Page 22 550976 Schematic description Η1 0 0 protection circuit, 5 b, 9 b secondary winding, 5a, 9a secondary winding. Page 23 2148-4768-PF (N) .ptd 1

Claims (1)

550976 By winding the pair once, the voltage between the peak-to-peak voltage protection of this pair of switches exceeds the predetermined 2 ·· South frequency circuit of the half-bridge circuit supplied by a kind of current power supply, blocking the voltage between the current-limiting elements; and When the value is set, the direct current path of the discharge lamp constitutes the current discharge element and voltage; the impedance of the load circuit of the variable frequency lamp lighting load converted by the frequency conversion lighting device to detect the spikes, including the pair of switching elements is connected. λ is set to one, and the drive circuit is turned out to detect that the circuit of the voltage detection circuit stops oscillating between the sharp values of the two attacking windings. Double, the voltage setting includes: a DC power supply, a pair of switching element circuit that will be driven by the direct 1-frequency current, and a plurality of discharge lamp load electricity in parallel from the inverter lamp. It is characterized by: The lamp load circuit includes an anti-coil, a discharge lamp and a light-sealed capacitor, and a capacitor connected in parallel with the discharge lamp, and includes: 2148-4768-PF (N) .ptd Page 24 550976 6. The scope of the patent application is secondary winding, each pair of the current-carrying coils of each discharge lamp negatively connected to the current-limiting coil and the gas / pair The switching element operates, and the voltage driving the pair of switching elements is output. The discharge lamp lighting device of the Shenyue patent scope item 1 or 2 blocks the voltage generating circuit, and each detects the secondary winding oscillation. When σ t is set to a predetermined value, the inverter circuit is stopped. The voltage detection circuit between the two values includes: a series circuit composed of a diode and a capacitor connected to the capacitor; and a diode connected to the capacitor; In parallel, the capacitors of one side are connected in parallel; the capacitance value of the capacitor of one side is set to another 4. The value of the capacitor of the other side is set to 4; The voltage between the peak and peak voltage detection of 5 2 item discharge lamp lighting, the resistance between its capacitors. Including inserting the connected secondary winding and 5.-a kind of discharge lamp lighting current power supply DC to the center of the 'including: | current power, the frequency of the two cheek current will be composed of the straight + bridge circuit The high-frequency current to the switching element circuit makes the discharge lamp stomach :: circuit and the use of a plurality of discharge lamp loads in parallel from the inverter circuit, .. ,, and the lamp are characterized by: 2148-4768-PF (N). ptd 550976 Six patent applications Scope of each ^ ^ ^ ^ ^ Lei outline, capacitor electric load circuit including current-resistant coil, discharge lamp and coupling # circuit and the capacitor in parallel with the discharge lamp and includes: gram, set i, ΪΓ μ In the discharge lamp load circuit, each of the anti-coil coils is set to drive out. = The voltage of the pair of switching elements is connected by the current limiting element and the pair of switching elements; occurrence 3 = voltage detection circuit between values. ㈣When the voltage between the peaks of these secondary windings and the combined voltage is exceeded; and when the maximum voltage of the voltage detected by the peak-to-peak voltage detection circuit is exceeded, the inverter circuit is stopped. Stop oscillation. 6. If the discharge lamp lighting device of item 5 of the scope of patent application, i, the peak-to-cavity voltage detection circuit includes: Eight series circuits composed of capacitors connected in series; the body, and one of the capacitors After the capacitors are connected in parallel, several resistors are inserted between the connected capacitors; Shi Jiezhi's several primary windings and the capacitance of the capacitor on the side of the capacitor that will be connected in parallel with the diode are less than about 4 times. Another horse 7. If the scope of patent application is the first! The discharge lamp lighting device of item 2, 2 or 5 includes the following: the anode and the anode of the connection power source including the diode, the self-discharge lamp and the switching capacitor are connected respectively; | < determine the capacitance value of each coupling capacitor so that During the discharge lighting, the current alternately flows from the diode to the power source two during each half cycle of the oscillation.