JP4239808B2 - High pressure discharge lamp lighting device and lighting fixture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent abnormal heat generation even if any fault occurs in a feed line to a high pressure discharge lamp or the discharge in outer tube occurs in the high pressure discharge lamp. <P>SOLUTION: Although direct current output voltage of a step-down chopper circuit 3 declines from voltage of non-lighting time or no-load time by discharge generated in a conductor 105a of a cable 104, a lighting distinction part 26a does not wrongly determine such discharge as the discharge in the high pressure discharge lamp 4. Accordingly, continuous discharge does not occur in the conductor 105a by continuing the operation of a timer part 29 to intermittently apply high pressure pulse voltage and the abnormal heat generation of the cable 104 can be prevented. Since the lighting distinction part 26a does not wrongly determine it as a lighting condition when the high pressure discharge lamp 4 generates the discharge in outer tube, the abnormal heat generation of each part, a socket 102, etc. can be suppressed. <P>COPYRIGHT: (C)2005,JPO&amp;NCIPI

Description

  The present invention relates to a high-pressure discharge lamp lighting device for lighting a high-pressure discharge lamp such as a high-intensity discharge lamp, and a lighting fixture including such a high-pressure discharge lamp lighting device.

  A high-intensity discharge lamp (HID lamp), which is a type of high-pressure discharge lamp, is used in a wide range of fields because of its high brightness and high efficiency depending on the type. In particular, metal halide lamps having high color rendering properties have been used in recent years for spotlights and downlights in indoor stores, taking advantage of their characteristics. Therefore, the design of the lamp is also important, and smaller lamps are preferred, so the lamp and the ballast that is the high-pressure discharge lamp lighting device are not in the form of an integrated lighting fixture, but the lamp and ballast that house the lamp Increasingly, they are installed in a separated state and wired with a cable or the like. Especially when the high voltage pulse voltage is output from the ballast to start the lamp, if the high voltage pulse voltage is continuously applied to the cable, the deterioration of the wiring is likely to occur. It is necessary to use wiring that can withstand the cumulative stress caused by the above, which is disadvantageous in terms of cost. There exists invention described in patent document 1 as what solved this problem (conventional example 1).

  In the conventional example 1, the first timer that measures the time (typically 10 seconds) required for the initial start of the high-pressure discharge lamp, and the first timer at a constant cycle (typically 2 minutes). A second timer that operates intermittently, and a third timer that operates the first and second timers for at least a sufficient time (typically 20 minutes) for restarting the high-pressure discharge lamp, The igniter is operated only during the time measured by one timer, and the igniter is not operated after the time measured by the third timer has elapsed. As described above, in the conventional example 1, the igniter operation for a time sufficient for the initial start of the high pressure discharge lamp can be repeatedly performed within the time sufficient for the restart of the high pressure discharge lamp. The possibility of generation of electrical noise due to the pulse voltage and deterioration of the wiring can be reduced as much as possible.

  The above conventional example 1 is a ballast using a magnetic circuit (so-called copper iron ballast), but in recent years, an electronic stability using many electronic components for the purpose of reducing the weight, size and function of the ballast. Is becoming the mainstream of discharge lamp lighting devices.

  FIG. 25 is a circuit block diagram showing an example (conventional example 2) of a conventional electronic ballast (high pressure discharge lamp lighting device). This conventional example 2 includes a rectifier circuit 1 for full-wave rectification of an AC power supply AC comprising a commercial power supply, a boost chopper circuit 2 for converting a pulsating voltage rectified by the rectifier circuit 1 into a desired DC voltage, and a boost chopper circuit. A step-down chopper circuit 3 that steps down the DC output of 2 and a polarity inversion circuit that applies a rectangular wave voltage to the high-pressure discharge lamp 4 by alternating the DC output voltage of the step-down chopper circuit 3 at a low frequency of several tens to several hundreds Hz. 5 and an igniter 31 for applying a high-voltage pulse voltage for starting to the high-pressure discharge lamp 4. The step-up chopper circuit 2 has a conventionally known configuration including a chopper choke 8, a rectifying element 7, a switching element 6 and a smoothing capacitor 9, and the first control circuit 10 performs PWM control of the switching element 6 so that the smoothing capacitor The DC output voltage Vdc boosted to a desired level is obtained at both ends of 9. The step-down chopper circuit 3 has a conventionally well-known configuration including a switching element 11, a rectifying element 12, a chopper choke 13 and a smoothing capacitor 14. The second control circuit 15 performs smoothing by PWM control of the switching element 11. A DC output voltage stepped down to a desired level is obtained at both ends of the capacitor 14. However, since the step-up chopper circuit 2 and the step-down chopper circuit 3 having such a configuration are well known in the art, a detailed description of the operation is omitted.

The igniter unit 31 includes a pulse transformer 20 whose secondary side is inserted between the polarity inversion circuit 5 and the high-pressure discharge lamp 4, and a pulse generator 21 that applies a pulse voltage to the primary side of the pulse transformer 20 and has a polarity. The high pressure discharge lamp 4 is started by superimposing a high voltage pulse voltage on the rectangular wave voltage whose polarity is inverted by the inverting circuit 5. The inductor 8 of the step-up chopper circuit 2 is provided with a secondary winding, and an AC voltage induced in the secondary winding is rectified by a diode 18, current-limited by a resistor 19 and smoothed by a capacitor 16. As a result, the operating power supplies of the first and second control circuits 10 and 15 are obtained. However, in order for the voltage across the capacitor 16 to be equal to or higher than the operating voltage of the first and second control circuits 10 and 15, it is necessary that the boost chopper circuit 2 operates and a current greater than a certain value flows in the inductor 8. There is. In some cases, the output of the capacitor 16 is stabilized by a three-terminal regulator or the like.
Japanese Patent No. 2562816 (page 2-4, Fig. 1)

  By the way, in the above-mentioned conventional example 1, if a damage to the wiring or incomplete connection between the lamp and the cable (for example, forgetting connection) should occur, the high voltage pulse voltage generated in the igniter is about 3 to 5 kV. When the thickness of the insulator covering the conductor of the cable is about 1.0 mm, there is a case where a dielectric breakdown occurs between adjacent conductors and discharge occurs. When such a discharge occurs, the high pressure discharge lamp 4 is started. Since the igniter operation stops in a situation similar to that at the time, power equivalent to that during steady lighting will be supplied from the copper-iron ballast via wiring, which may cause abnormal heat generation in the cable. There is.

  On the other hand, since the high voltage discharge lamp tends to increase the lamp voltage as the lighting time elapses, in the copper iron ballast as in the conventional example 1, the restart voltage also increases due to the increase of the lamp voltage, so that the lighting is maintained. I couldn't do it and had gone out. On the other hand, in the electronic ballast as in the above-mentioned conventional example 2, the restart voltage can be suppressed lower than that of the copper iron ballast even at the end of the life of the high-pressure discharge lamp. It was also supposed to extend the life of the discharge lamp. However, since the electronic ballast as in the above-mentioned conventional example 2 does not go out, the high-pressure discharge lamp is further loaded compared to the copper-iron ballast, so that the arc tube inside the high-pressure discharge lamp deteriorates. May cause cracks. In a high-pressure discharge lamp in which the inside of the outer tube covering the arc tube is evacuated in order to improve the luminous efficiency, the luminescent substance in the arc tube may leak into the outer tube through the cracks, etc. Since the gas pressure rises when the inside of the tube is no longer vacuumed, discharge (arc discharge) may occur between conductors with a potential difference in the outer tube (hereinafter referred to as arc discharge generated in the outer tube in this way. Called “in-tube discharge”). When this discharge in the outer tube occurs, an overcurrent exceeding the rated current value is supplied from the ballast to the high pressure discharge lamp, so that the temperature of the ballast rises and also in the base of the high pressure discharge lamp, the socket of the appliance, or the cable. There is a risk that heat will be generated more than usual, leading to deterioration of the service life. Such discharge in the outer tube can occur not only in the electronic ballast but also in the copper iron ballast.

  On the other hand, as a means of preventing discharge in the outer tube, a method of sealing an inert gas such as nitrogen in the outer tube is known, but the inert gas in the outer tube makes it easier for the heat of the arc tube to be transmitted to the outside, There is a problem that the luminous efficiency is lowered because the temperature of the arc tube is lowered. Also, as a means to shut off the overcurrent when an outer tube discharge occurs, there is also a method of disposing the current fuse in the base of the high pressure discharge lamp and cutting the supply power by blowing the current fuse due to the overcurrent. Are known. However, when starting a high-pressure discharge lamp, a larger current flows than when it is steadily lit, so it is necessary to use a current fuse that does not blow at that current value, so even if an overcurrent flows due to discharge in the outer tube, May take a long time before the current fuse is blown or may not blow. Therefore, the current fuse cannot reliably prevent the temperature rise of the ballast or the socket. Further, since the base becomes high temperature, the current fuse may be oxidized, resulting in a non-conductor and the lamp not being lit.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to generate abnormal heat even when a failure occurs in the power supply path to the high pressure discharge lamp or the discharge in the outer tube occurs in the high pressure discharge lamp. An object of the present invention is to provide a high pressure discharge lamp lighting device and a lighting fixture that can prevent the occurrence of the above.

In order to achieve the above object, the invention according to claim 1 is a lighting circuit unit for lighting a high-pressure discharge lamp by adjusting at least one of a voltage and a current supplied from an external power source to the high-pressure discharge lamp, An igniter that applies a starting high-voltage pulse voltage to the discharge lamp, a lighting determination unit that determines whether or not the high-pressure discharge lamp is in a lighting state, and a predetermined time during which it is determined that the lighting determination unit is not in a lighting state First timer means enabling the operation of the igniter section, second timer means for repeatedly operating the first timer means repeatedly at a predetermined time interval, and at least a time sufficient for restarting the high-pressure discharge lamp and third timer means after the lapse of the regimen during time for prohibiting the operation of the igniter unit, high-voltage pulse to the high-pressure discharge lamp from an igniter unit by the operation of the first and second timer means applied is thereby A fourth timer means for measuring the total time, and a second time means instead of the second timer means at a predetermined time interval longer than that of the second timer means after the total time of the fourth timer means has passed the predetermined time. And a fifth timer means for repeatedly intermittently operating one timer means .

According to the present invention, the first timer means enables the igniter section to operate for a predetermined time only while it is determined that the lighting determination section is not in the lighting state. For example, the power supply path to the high pressure discharge lamp is provided. When the cable to be formed is not connected to the high-pressure discharge lamp, it is determined that the lighting determination unit is not in the lighting state even when the cable is discharged between the conductors of the cable by the high-voltage pulse voltage output from the igniter unit. By continuously applying the high voltage pulse voltage by continuing the operation of the timer means, no continuous discharge occurs between the conductors, and abnormal heat generation of the cable can be prevented. Further, even when the high pressure discharge lamp is causing the discharge in the outer tube, the lighting determination unit determines that the discharge is not in the lighting state. Therefore, even if the discharge in the outer tube occurs during the operation of the first timer means, the second timer means. Thus, while the first timer means is suspended, the power supply to the high-pressure discharge lamp is stopped and the discharge in the outer tube is not continued, so that abnormal heat generation in each part and socket can be suppressed. Furthermore, the time required for restart can be shortened by applying the high voltage pulse voltage after the high pressure discharge lamp has cooled sufficiently.

According to a second aspect of the invention, in the invention of claim 1, within the predetermined time of the first timer means, the sixth timer means for enabling operation of the igniter unit, the sixth timer means a predetermined time And seventh timer means for intermittently repeating the operation at intervals.

  According to the present invention, it is possible to prevent the occurrence of discharge in the outer tube while ensuring the minimum startability.

The invention of claim 3 is the invention of claim 1 or 2 , wherein the predetermined time of the first timer means and the predetermined time interval of the second timer means are determined by The effective value of the output voltage is set to be less than a predetermined value.

According to a fourth aspect of the present invention, in the first or second aspect of the present invention, the predetermined time of the first timer means and the predetermined time interval of the second timer means are set to a lighting circuit portion when the high-pressure discharge lamp is inconspicuous. It is characterized in that it is set so as not to exceed the maximum ratings of the circuit components constituting the igniter section, lighting determination section or first to seventh timer means.

  According to the present invention, deterioration of circuit components can be suppressed and the life of the entire apparatus can be extended.

The invention according to claim 5 is the invention according to claim 4 , wherein the maximum rating of the circuit component is a rating for at least one of temperature, current, voltage and power of the circuit component.

The invention of claim 6 is characterized in that, in any one of the inventions of claims 1 to 5 , a return-type temperature response switch that opens and closes a contact according to temperature is used as the first and second timer means. .

The invention of claim 7 is the invention according to any one of claims 1 to 6 , wherein the predetermined time of the first timer means immediately after the start of the operation of the igniter section is set to a time sufficient for starting the high pressure discharge lamp. Features.

The invention of claim 8, in any one of the claims 1-7, said predetermined time interval of the predetermined time and a second timer means in the first timer means, the outer-tube discharge high-pressure discharge lamp occurs It is characterized by not being set.

  According to this invention, generation | occurrence | production of the discharge in an outer tube | pipe can be prevented.

A ninth aspect of the invention is characterized in that, in any of the first to eighth aspects of the invention, the lighting circuit portion is formed of a copper-iron ballast.

The invention of claim 10 is characterized in that, in the invention of claim 9 , the igniter section outputs a single high-voltage pulse voltage near the peak of the AC power supply voltage supplied from the external power supply to the lighting circuit section.

  According to the present invention, it is possible to prevent the occurrence of discharge in the outer tube while ensuring the minimum startability.

An eleventh aspect of the invention is characterized in that, in the invention of any one of the first to eighth aspects, the lighting circuit portion comprises an electronic ballast.

The invention of claim 12 is characterized in that, in the invention of claim 11 , the lighting circuit section outputs a rectangular wave alternating current, and the igniter section superimposes a starting high voltage pulse voltage on the output rectangular wave voltage of the lighting circuit section. To do.

The invention of claim 13 is characterized in that, in the invention of claim 12 , the igniter section superimposes a single high-voltage pulse voltage once per half cycle of the output rectangular wave voltage.

  According to the present invention, it is possible to prevent the occurrence of discharge in the outer tube while ensuring the minimum startability.

The invention of claim 14 is characterized in that, in the invention of claim 13 , the igniter section superimposes a high voltage pulse voltage on the first half when the half cycle of the output rectangular wave voltage is divided into the first half and the second half.

The invention of claim 15 is characterized in that, in the invention of claim 14 , the igniter section superimposes the high voltage pulse voltage immediately after the polarity of the output rectangular wave voltage is inverted.

The invention of claim 16 is characterized in that, in the invention of claim 11 , the igniter section generates a high voltage pulse voltage by using a resonance voltage.

According to a seventeenth aspect of the present invention, in any one of the first to sixteenth aspects, a plurality of electric wires in which a conductor is covered with an insulator having a thickness of 1 mm or less are covered with a cable covered with an insulating outer skin. Power is supplied from the lighting circuit unit to the high pressure discharge lamp, the lighting circuit unit outputs a rectangular wave voltage alternating at a low frequency of several tens to several hundreds of hertz, and the igniter unit outputs 3 to 3 rectangular wave output voltages of the lighting circuit unit. A high voltage pulse voltage of 5 kV is superimposed.

The invention of claim 18 is the invention according to any one of claims 1 to 17 , wherein a high-pressure discharge lamp with a rated lamp power of 35 watts to 75 watts is used as a load, and the predetermined time in the first timer means is 3 to 5 seconds. The predetermined time interval in the second timer means is 1 to 3 seconds.

According to a nineteenth aspect of the present invention, in any one of the first to seventeenth aspects, a high-pressure discharge lamp with a rated lamp power of 150 watts is used as a load, and the predetermined time in the first timer means is 0.5 to 1.5 seconds. The predetermined time interval in the second timer means is 1 to 3 seconds.

In order to achieve the above object, a twentieth aspect of the present invention is a lighting fixture including the discharge lamp lighting device according to any one of the first to nineteenth aspects, wherein the lighting circuit portion and the igniter portion are housed, and the high pressure A socket connected to the base of the discharge lamp, a lamp having a reflector that reflects light emitted from the high-pressure discharge lamp, and a plurality of wires in which the conductor is covered with an insulator are covered with an insulating outer sheath And a lighting circuit portion and an igniter portion connected to a socket by the cable.

According to this invention, there can be provided a lighting fixture that has the same effect as the discharge lamp lighting device according to any one of claims 1 to 19 and can suppress the heat generation of the cable and the socket.

According to the present invention, the first timer means enables the igniter unit to operate for a predetermined time only while it is determined that the lighting determination unit is not in the lighting state. When the cable to be formed is not connected to the high-pressure discharge lamp, it is determined that the lighting determination unit is not in the lighting state even when the cable is discharged between the conductors of the cable by the high-voltage pulse voltage output from the igniter unit. By continuing the operation of the timer means and intermittently applying the high voltage pulse voltage, there is an effect that continuous discharge does not occur between the conductors, and abnormal heat generation of the cable can be prevented. Further, even when the high pressure discharge lamp is causing the discharge in the outer tube, the lighting determination unit determines that the discharge is not in the lighting state. Therefore, even if the discharge in the outer tube occurs during the operation of the first timer means, the second timer means. Thus, while the first timer means is suspended, the power supply to the high-pressure discharge lamp is stopped and the discharge in the outer tube is not continued, so that it is possible to suppress abnormal heat generation in each part and socket. Furthermore, the time required for restart can be shortened by applying the high voltage pulse voltage after the high pressure discharge lamp has cooled sufficiently.

(Embodiment 1)
The high pressure discharge lamp lighting device (electronic ballast) of the present embodiment has a basic configuration common to that of the conventional example 2 as shown in FIG. 1, and a rectifier circuit 1 for full-wave rectification of an AC power supply AC comprising a commercial power supply. The step-up chopper circuit 2 that converts the pulsating voltage rectified by the rectifier circuit 1 into a desired DC voltage, the step-down chopper circuit 3 that steps down the DC output of the step-up chopper circuit 2, and the DC output voltage of the step-down chopper circuit 3 A polarity inversion circuit 5 that applies a rectangular wave voltage to the high-pressure discharge lamp 4 by alternating at a low frequency of several tens to several hundreds of Hz, and an igniter unit 31 that applies a starting high-voltage pulse voltage to the high-pressure discharge lamp 4 Prepare. In addition, the same code | symbol is attached | subjected to the same component as the prior art example 2, and description is abbreviate | omitted.

  FIG. 2 shows specific circuits of the polarity inverting circuit 5 and the igniter unit 31. The polarity inversion circuit 5 is constituted by a bridge circuit of four switching elements Q1 to Q4, and is a connection point between two sets of switching elements Q1 and Q2, Q3 and Q4 connected in parallel between the output terminals of the step-down chopper circuit 3. A high-pressure discharge lamp 4 is connected between them via an igniter section 31. By alternately turning on the two switching elements Q1 and Q4 and Q2 and Q3 located at the diagonal sides, the direct current of the step-down chopper circuit 3 is switched on. A rectangular wave voltage is applied to the high-pressure discharge lamp 4 by alternating the output voltage at a low frequency of several tens to several hundreds of Hz.

  The igniter 31 is connected in parallel to the pulse transformer 20 in which the secondary winding is inserted between the polarity inversion circuit 5 and the high-pressure discharge lamp 4, and to the secondary winding of the pulse transformer 20 and the high-pressure discharge lamp 4. The capacitor 21a and the resistor 21b, and the voltage response element 21c such as Sidac connected in parallel with the capacitor 21a through the primary winding of the pulse transformer 20 are provided. The capacitor 21a is charged by the rectangular wave voltage output from the polarity inverting circuit 5, and when the voltage across the capacitor 21a exceeds the breakover voltage of the voltage response element 21c, the voltage response element 21c is turned on and stored in the capacitor 21a. Since the generated charge is discharged through the voltage response element 21c and the primary winding of the pulse transformer 20, a boosted high voltage pulse voltage is generated in the secondary winding of the pulse transformer 20.

  The first control circuit 10 is configured using a general-purpose active filter IC (for example, SC33262DR2 manufactured by Motorola), and performs PWM control of the switching element 6 of the boost chopper circuit 2. The second control circuit 26 is composed of an analog IC, and performs PWM control of the switching element 11 of the step-down chopper circuit 3 and on / off control of the four switching elements Q1 to Q4 of the polarity inversion circuit 5. . Here, the second control circuit 26 has a detection voltage Vx obtained by dividing the DC output voltage of the step-down chopper circuit 3 corresponding to the lamp voltage of the high-pressure discharge lamp 4 by the voltage dividing resistors 24 and 25 with a predetermined threshold. If the detected voltage Vx is lower than the threshold value, it is determined that the high-pressure discharge lamp 4 is in a lighting state and the determination signal is turned on. If the detected voltage Vx exceeds the threshold value, the high-voltage discharge lamp 4 is turned on. There is provided a lighting determination unit 26a for determining that the electric lamp 4 is not in a lighting state, that is, in a light-off state or a no-load state, and turning off the determination signal. The discrimination signal of the lighting discrimination unit 26a is input to the timer unit 29. When the discrimination signal is turned off from on, the timer unit 29 is triggered to start operation, and the discrimination signal is turned on from off. Sometimes stop working. The second control circuit 26 may be configured by a general-purpose switching regulator control IC (for example, μPC494 manufactured by NEC) and the lighting determination unit 26a may be configured by a comparator IC.

  The timer unit 29 is composed of, for example, an 8-bit microcomputer (such as TMP47C102M manufactured by Toshiba), and repeatedly counts a predetermined time (operational time) T1 during which the igniter unit 31 can operate and an operationable time T1. The time interval (intermittent time) T2 and the time (restart time) T3 sufficient for restarting the high-pressure discharge lamp 4 are measured, and the pulse width of the operable time T1 is set as shown in FIG. The square pulse is repeatedly output every intermittent time T2, and the output of the square pulse is stopped when the restart time T3 elapses from the start of the square pulse output. Instead of the microcomputer, a general-purpose timer IC (for example, μPC1555 manufactured by NEC, AN6780 manufactured by Matsushita Electric Industrial Co., Ltd.) may be combined.

  Thus, when the AC power supply AC is turned on, the first control circuit 10 is activated to operate the step-up chopper circuit 2, and the second control circuit 26 is also activated to operate the step-down chopper circuit 3. At this time, since the high pressure discharge lamp 4 is in the off state, the DC output voltage of the step-down chopper circuit 3 is considerably higher than that in the on state (approximately 300 V), and the detection voltage Vx exceeds the threshold value so that the light is on. The determination signal output from the determination unit 26a to the timer unit 29 is turned off, and the timer unit 29 is triggered. Then, a square pulse as shown in FIG. 3 is output from the timer unit 29 to the second control circuit 26, and the second control circuit 26 reduces the step-down chopper circuit during the ON period of the square pulse (operable time T1). 3 and the polarity inversion circuit 5 are operated to output a high voltage pulse voltage of 3 to 5 kV from the igniter unit 31, and the second control circuit 26 controls the step-down chopper circuit 3 and the polarity in the off period (intermittent time T2) of the square pulse. By stopping the inversion circuit 5 and also stopping the output of the high voltage pulse voltage from the igniter unit 31, the igniter unit 31 is operated for the operable time T1 every intermittent time T2, as shown in FIGS. A high voltage pulse voltage superimposed on the wave voltage is applied to the high pressure discharge lamp 4. FIG. 5 is a waveform diagram showing a state in which the high voltage pulse voltage is superimposed on the rectangular wave voltage during the operable time T1.

  Here, in the timer unit 29, the timing of the operable time T1 is started and the time of the restart time T3 is also started. When the high pressure discharge lamp 4 does not start at the end of its life, or the high pressure discharge lamp 4 is mounted in the socket. If the determination signal output from the lighting determination unit 26a does not turn on until the high-pressure discharge lamp 4 is started before the restart time T3 elapses, as in the case where there is no load (when there is no load), a square pulse is output. Is stopped, the second control circuit 26 stops the step-down chopper circuit 3 and the polarity inversion circuit 5, and the output of the high voltage pulse voltage from the igniter unit 31 is also stopped. If the high pressure discharge lamp 4 is started before the restart time T3 elapses, the DC output voltage of the step-down chopper circuit 3 decreases to the rated lamp voltage (90 to 100 V) of the high pressure discharge lamp 4, so that the detection voltage Vx Is lower than the threshold value, the determination signal output from the lighting determination unit 26a to the timer unit 29 is switched from OFF to ON, and the operation of the timer unit 29 is stopped. Even when the high pressure discharge lamp 4 is extinguished, the determination signal output from the lighting determination unit 26a to the timer unit 29 changes from on to off and the timer unit 29 is triggered, and the above-described operation is performed. .

  By the way, the lighting fixture using the high pressure discharge lamp lighting device of the present embodiment includes, for example, a case 100 containing the high pressure discharge lamp lighting device, a hemispherical reflector 101 and a socket 102 as shown in FIG. The lamp 103 and a cable 104 that is wired between the case 100 and the lamp 103 and serves as a power supply path from the high-pressure discharge lamp lighting device to the high-pressure discharge lamp 4 are configured. As shown in FIG. 7, the cable 104 is a flat cable in which two or three electric wires 105, each of which has a conductor 105a having a circular cross-section and covered with an insulator 105b, are covered with an insulating sheath (sheath) 106. For example, a VVF cable or the like. Here, many of the cables 104 normally used in this type of lighting apparatus have a conductor 105a with a diameter of 1.6 to 2.0 mm, and the insulator 105b has a thickness of about 0.8 mm. In the unlikely event that a flaw or incomplete connection between the lamp 103 and the cable 104 (for example, forgetting to connect) occurs, the high voltage pulse voltage of 3 to 5 kV output from the igniter unit 31 is about 1.6 mm thick. There is a possibility that the insulator 105b is subjected to dielectric breakdown and is discharged between the adjacent conductors 105a. Then, the DC output voltage of the step-down chopper circuit 3 is reduced from the voltage at the time of extinction or no load (approximately 300 V) due to the discharge generated between the conductors 105a, but the threshold value in the lighting determination unit 26a is set to an appropriate value. Then, such a discharge is not erroneously determined as a discharge in the high-pressure discharge lamp 4, and the operation of the timer unit 29 is continued and the high-voltage pulse voltage is intermittently applied, thereby continuously between the conductors 105a. Discharge does not occur and abnormal heat generation of the cable 104 can be prevented.

  According to the experiments by the present inventors, when the peak value of the high voltage pulse voltage is 5 kV and 300 V, the pulse width is about 2.5 microseconds, and the rated lamp power is when the DC output voltage of the step-down chopper circuit 3 is about 300 V. Is set to a value corresponding to the detected voltage Vx when the DC output voltage of the step-down chopper circuit 3 is 160 V when a metal halide lamp of 150 watts is used as a load, the discharge between the conductors 105a is turned on by the lighting determination unit. In 26a, it was found that there was no misclassification as lighting. In addition, when a high voltage pulse voltage was applied to the high pressure discharge lamp 4 (the metal halide lamp) under the same conditions to measure the time (starting time) required to shift from glow discharge to arc discharge, the arc tube of the high pressure discharge lamp 4 was measured. It was found that it took about 0.5 seconds at the start (initial start) from a state where the gas pressure was sufficiently lowered. Therefore, if the operable time T1 of the timer unit 29 is about 1 second and the intermittent time T2 is about 2 seconds, the conductor of the cable 104 when the AC power supply AC is turned on without the cable 104 being connected to the lamp 103. Heat generation due to the discharge between 105a is suppressed.

  In addition, even when the high pressure discharge lamp 4 is generating discharge in the outer tube, the lighting determination unit 26a does not erroneously determine that it is in the lighting state, so even if the discharge in the outer tube occurs during the operable time T1, for example. During the time T2, the power supply to the high pressure discharge lamp 4 is stopped and the discharge in the outer tube is not continued, so that abnormal heat generation of each part and the socket 102 can be suppressed.

  By the way, in a high pressure discharge lamp, it is difficult to start because the gas pressure in the arc tube is increased at the time of restart. For example, in the case of a metal halide lamp, the gas pressure in the arc tube is lowered to restart. Usually, it takes 3 minutes or more after the lights are turned off. Also, when restarting, even if the high-pressure discharge lamp breaks down and enters a glow discharge state, it may not immediately shift to arc discharge. In such a case, if a high-pressure pulse voltage is applied in a short intermittent time T2, glow discharge occurs. As a result, the high pressure discharge lamp is warmed and it becomes more difficult to start, so it is desirable to apply the high voltage pulse voltage after the high pressure discharge lamp has cooled sufficiently.

  Therefore, in the timer unit 29, as shown in FIGS. 8 and 9, the total time T4 in which the high voltage pulse voltage is applied from the igniter unit 31 to the high pressure discharge lamp 4 by counting the operable time T1 and the intermittent time T2 is counted, If the predetermined time (<T3) that is considered to be sufficient if the total time T4 is the initial start has elapsed, the operable time T1 is repeatedly operated intermittently at an intermittent time T5 (> T2) longer than the intermittent time T2. By doing so, the time required for restart can be shortened by applying the high-pressure pulse voltage after the high-pressure discharge lamp 4 is sufficiently cooled, and the deterioration of the cable 104 can also be suppressed. According to the experiments by the present inventors, three metal halide lamps (MT70E-LW / PG made by Matsushita Electric Industrial Co., Ltd.) with a rated lamp power of 70 watts are prepared, the operable time T1 is about 5 seconds, and the first intermittent time T2 is set. About 2 seconds, total time T4 is about 28 seconds, later intermittent time T5 is about 25 seconds, operation possible time T1 is about 5 seconds, intermittent time T2 is about 2 seconds to restart When the time required was compared, in the former case, it took about 3 minutes for all three metal halide lamps, and in the latter case, the longest time required 11 minutes or more. Here, the operable time T1 is set to about 5 seconds. In general, a metal halide lamp with a rated lamp power of 70 watts is compared with a lamp with a rated lamp power of 35 watts or 150 watts from glow discharge to arc discharge, respectively. This is because it takes a long time to shift to, so that it is necessary to start within the first operable time T1 as much as possible at the time of initial start. In restarting, the time required for restarting varies greatly depending on the individual difference of the high-pressure discharge lamp 4 and the surrounding environment. Therefore, even if the time required for restarting is somewhat longer, there is often no problem.

  Here, in the present embodiment, the step-down chopper circuit 3 and the polarity inversion circuit 5 are used to supply a low-frequency rectangular wave voltage / current to the high-pressure discharge lamp 4, but a full bridge type as shown in FIG. Alternatively, the inverter circuit 43 or the half-bridge type inverter circuit 52 may be used.

  A full bridge type inverter circuit 43 shown in FIG. 10 includes a series circuit of two switching elements S1, S2 in which diodes D1, D2 are connected in antiparallel between output terminals of the boost chopper circuit 2, and diodes D3, D3, respectively. A load circuit including a high-pressure discharge lamp 4 between connection points of each series circuit, in which a series circuit of two switching elements S3 and S4 to which D4 is connected in antiparallel is connected to each other in parallel to form a bridge circuit. In addition, an igniter unit 31 is connected. The control circuit 42 performs on / off control of the switching elements S1 to S4, and as shown in FIG. 11, a period in which the two switching elements S1 and S4 located at one diagonal side are turned on / off at a high frequency. The rectangular wave lamp current can be generated by alternately repeating a period during which the two switching elements S2 and S3 at the other diagonal side are turned on and off at a high frequency at a low frequency (several tens to several hundreds of Hz). The high pressure discharge lamp 4 is supplied.

  On the other hand, the half-bridge type inverter circuit 52 shown in FIG. 12 includes a series circuit of two switching elements S5 and S6 connected in parallel with a series circuit of smoothing capacitors C1 and C2 between output terminals of the rectifier circuit 1, and each switching circuit. A load circuit including a high-pressure discharge lamp 4 between a connection point of the smoothing capacitors C1 and C2 and a connection point of the switching elements S5 and S6, and diodes D5 and D6 connected in antiparallel to the elements S5 and S6 An igniter unit 31 is connected. The control circuit 42 controls on / off of the switching elements S5 and S6. As shown in FIG. 13, the control circuit 42 turns on / off one switching element S5 at a high frequency and turns on the other switching element S6 at a high frequency. A rectangular wave lamp current is supplied to the high-pressure discharge lamp 4 by alternately repeating the OFF period at a low frequency (tens to hundreds of Hz).

  Then, a lighting determination unit (not shown) determines whether or not the high-pressure discharge lamp 4 is in a lighting state. Only when it is determined that the high-pressure discharge lamp 4 is not in a lighting state, the operation of the igniter unit 38 during the operable time T1 is performed using a timer (not shown). By repeating the above at every intermittent time T2, abnormal heat generation of the cable 104 or the like can be suppressed.

  By the way, in the ballast for high-pressure discharge lamps, when the rated output voltage exceeds 300V, it is an insulation type or an interlock function (function to automatically shut off the output when the high-pressure discharge lamp is removed). (See “Explanation of Technical Standards for Electrical Appliances”, Appendix 6), the high-voltage discharge lamp lighting device according to the present embodiment is also effective in the output voltage when the high-pressure discharge lamp 4 is inconspicuous. It is desirable to set the operable time T1 and the intermittent time T2 so that the value is less than 300V. That is, the effective value C (Vrms) of the output voltage is the effective value A (Vrms) of the output voltage (rectangular wave voltage) within the operable time T1 in which the high voltage pulse voltage is superimposed as shown in FIG. Since it is expressed by an average value with the effective value B (Vrms) of the output voltage within the intermittent time T2, even if the effective value A (Vrms) of the output voltage within the operable time T1 exceeds 300V, the operation is performed. The effective value C (Vrms) of the output voltage can be suppressed to less than 300 V by appropriately setting the possible time T1 and the intermittent time T2. FIG. 14B is a waveform diagram showing a state in which the high voltage pulse voltage is superimposed on the rectangular wave voltage during the operable time T1.

(Embodiment 2)
The present embodiment is characterized in that the operable time T1 and the intermittent time T2 are set so as not to exceed the maximum ratings of the circuit components constituting each part when the high pressure discharge lamp 4 is inconspicuous. Since the circuit configuration and operation of this embodiment are the same as those of Embodiment 1, illustration and description thereof are omitted.

  For example, paying attention to the resistor 21b, which is a component (circuit component) of the igniter unit 31, when a rectangular wave voltage superimposed with a high voltage pulse voltage is applied to the high voltage discharge lamp 4 as shown in FIG. As shown in FIGS. 15B to 15D, the voltage across the resistor 21b, the current flowing through the resistor 21b, and the effective value of the power consumed by the resistor 21b can be operated so as not to exceed the maximum rating of the resistor 21b. The time T1 and the intermittent time T2 are set appropriately. Furthermore, it is desirable to appropriately set the operable time T1 and the intermittent time T2 including the condition that the temperature of the resistor 21b does not exceed the allowable value tmax as shown in FIG.

  Thus, when a rectangular wave voltage superimposed with a high-voltage pulse voltage is continuously applied when the high-pressure discharge lamp 4 is unsuccessful, voltage application exceeding the maximum rating, current conduction, power consumption, or temperature rise exceeding the allowable range By applying a rectangular wave voltage superimposed with a high-voltage pulse voltage intermittently to a component that has experienced a voltage drop, the voltage, current, and power can be kept below the maximum rating and temperature rise can be kept within an allowable range. This has the advantage that the life of the entire apparatus can be extended by suppressing the deterioration of the components. In the present embodiment, the resistor 21b, which is a component of the igniter unit 31, is exemplified as a target for determining the setting conditions for the operable time T1 and the intermittent time T2. However, the present invention is not limited to this, and the high-pressure discharge lamp 4 is not limited. Any component that has applied a voltage exceeding the maximum rating, current application, power consumption, or a temperature rise exceeding the allowable range when a rectangular wave voltage superimposed with a high-voltage pulse voltage is applied continuously at any time. Absent.

(Embodiment 3)
The present embodiment is characterized in that a return-type temperature response switch that opens and closes contacts according to temperature is used as the first and second timer means.

  As shown in FIG. 16, a return-type temperature response switch 21d such as a thermal protector or a bimetal switch is connected in series between the resistor 21b and the high-pressure discharge lamp 4, and is disposed close to the resistor 21b of the igniter section 31. Has been. However, since the configuration other than this is the same as that of the first embodiment, illustration and description thereof are omitted.

  Thus, when the AC power supply AC is turned on, the first control circuit 10 is activated to operate the step-up chopper circuit 2 and the second control circuit 26 is also activated to activate the step-down chopper circuit 3 and the polarity inversion circuit 5. Make it work. Since the rectangular wave current flows and the resistor 21b of the igniter 31 generates heat, and the temperature response switch 21d closes its contact until the temperature rises and exceeds the operating temperature, the igniter 31 operates and the high voltage pulse The voltage is superimposed on the rectangular wave voltage. When the temperature of the resistor 21b exceeds the operating temperature, the temperature responsive switch 21d opens the contact point, so that the operation of the igniter unit 31 is stopped, and the current stops flowing, so that the temperature of the resistor 21b decreases and falls below the operating temperature. The igniter unit 31 is operated again in order to close the contact of the temperature response switch 21d. That is, in this embodiment, the period in which the temperature response switch 21d closes the contact is the operable time T1, and the period in which the temperature response switch 21d is open is the intermittent time T2.

  Note that the temperature detection target component in which the temperature response switch 21d is disposed in close proximity is not limited to the component in the igniter unit 31, and the amount of heat generated is higher than that during lighting in the operable time T1 in which the high voltage pulse voltage is superimposed on the rectangular wave voltage. Any component that increases the number is acceptable. Further, the position at which the temperature response switch 21d is inserted into the circuit is not limited to the igniter section 31. As a result, any position can be used as long as the high voltage pulse voltage can be intermittently superimposed on the rectangular wave voltage. Further, a bimetal switch whose contact is opened by self-heating may be used as the return type temperature response switch 21d.

(Embodiment 4)
By the way, in general, in the high pressure discharge lamp, when the temperature in the arc tube is sufficiently cooled (initial start state), the enclosure in the arc tube must be excited to shift to arc discharge. Since it is also cold, it is necessary to warm the electrode sufficiently for thermionic emission. Therefore, the application time of the high voltage pulse voltage required for the transition to the arc discharge is longer at the initial start than at the restart when the inside of the arc tube is at a high temperature.

  Therefore, in this embodiment, as shown in FIG. 17, the operable time T1 'immediately after the power is turned on is made longer than the subsequent operable time T1, thereby improving the startability at the initial start. Note that the application time of the high voltage pulse voltage at the first start (operation possible time T1 ') is preferably about 5 to 10 seconds based on past experiments and verifications.

  Here, in an abnormal high pressure discharge lamp (hereinafter referred to as “abnormal lamp”) in which a luminescent substance or the like in the arc tube leaks into the outer tube, as shown in FIG. If the temperature inside the outer tube rises and the temperature inside the outer tube exceeds the thermoelectron limit temperature, it will shift to arc discharge in the outer tube and cause discharge inside the outer tube (see curve a in FIG. 18B). It is desirable to set the operable time T1, T1 ′ and the intermittent time T2 so that the discharge in the outer tube does not occur even in such an abnormal lamp. According to an experiment conducted by the present inventors, the intermittent time T2 is fixed to 10 seconds, and the operable time T1 is changed from 2 seconds to 14 seconds in steps of 2 seconds to confirm whether or not the discharge in the outer tube occurs in the abnormal lamp. As a result, the discharge in the outer tube did not occur until the operable time T1 was 12 seconds, and it occurred in 14 seconds or more. Therefore, it is desirable that the operable time T1, T1 'is within about 10 seconds from the viewpoint of preventing the occurrence of discharge in the outer tube. Further, when the operable time T1 is fixed to 10 seconds and the intermittent time T2 is changed from 2 seconds to 14 seconds in increments of 2 seconds, it is confirmed whether or not the discharge in the outer tube occurs in the abnormal lamp. The intermittent time T2 is 6 seconds. In the above, no discharge in the outer tube occurred, and it occurred in 4 seconds or less. However, if the intermittent time T2 is set too long, the user may misunderstand that the high pressure discharge lamp does not start within the first operable time T1, so the intermittent time T2 is preferably within about 10 seconds. .

  Thus, if the operable time T1 and the intermittent time T2 are each set to about 10 seconds, the temperature in the outer tube reaches the thermoelectron limit temperature even for an abnormal lamp as shown by the curve (b) in FIG. This can prevent the discharge in the outer tube.

(Embodiment 5)
The high pressure discharge lamp lighting device of the present embodiment is for starting through a current limiting element (copper iron ballast) 40 composed of a choke coil inserted between the AC power supply AC and the high pressure discharge lamp 4 and the current limiting element 40. The igniter unit 41 for applying the high-pressure pulse voltage to the high-pressure discharge lamp 4 and the timer circuit unit 42 for controlling the operation of the igniter unit 41 are provided.

  In the igniter unit 41, for example, as in Conventional Example 1 disclosed in Patent Document 1, a series circuit of a capacitor and a triac is connected between a tap provided in the current limiting element 40 and an AC power supply AC, and this triac is a voltage response. A high voltage pulse voltage is generated from the current limiting element 40 by being turned on by the element. The timer circuit unit 42 is composed of a general-purpose timer IC or the like and measures the operable time T1, the intermittent time T2, the restart time T3, etc., and the voltage response element of the igniter unit 41 corresponding to each time T1,. By controlling the operation of the triac, the high voltage pulse voltage is output from the igniter unit 41 for the same operation as that of the first embodiment, that is, for the operable time T1 every intermittent time T2. Although not shown, a lighting determination circuit is provided for determining whether or not the high pressure discharge lamp 4 is in a lighting state based on an applied voltage applied from the current limiting element 40 to the high pressure discharge lamp 4. The timer circuit unit 42 starts operating when it is determined to be in the lighting state by the determination circuit, and the timer circuit unit 42 stops operating when it is determined as the non-lighting state.

  Here, the igniter unit 41 configured as described above outputs a single high-voltage pulse voltage VP every half cycle of the power supply voltage Vac of the AC power supply AC as shown in FIG. That is, in the past, a plurality of high-voltage pulse voltages were output every half cycle of the power supply voltage in order to improve startability. However, when glow discharge occurs in an abnormal lamp, the temperature in the outer tube rises and discharges into the outer tube. Therefore, by outputting a single high-voltage pulse voltage VP every half cycle of the power supply voltage Vac, it is possible to prevent the abnormal lamp glow discharge while ensuring minimum startability. We try to reduce power consumption. Further, in the first embodiment, as shown in FIG. 21, if a single high-voltage pulse voltage VP is superimposed every half cycle of the rectangular wave voltage Vx output from the polarity inversion circuit 5 to the high-pressure discharge lamp 4, the same applies. The following effects can be obtained. Note that the timing at which the high voltage pulse voltage VP is output from the igniter unit 41 may be in the vicinity of the peak of the power supply voltage Vac or in the range of 60 degrees to 120 degrees in order to improve the startability by the single high voltage pulse voltage VP. Desirably, in the case of the first embodiment, it is desirable to set the first half portion immediately after the polarity of the rectangular wave voltage is reversed or when the half cycle is divided into the first half and the second half.

(Embodiment 6)
The present embodiment is characterized in that the igniter unit 31 ′ generates a high-voltage pulse voltage by using a resonance voltage, and other configurations and operations are the same as those in the first embodiment.

  As shown in FIG. 22, the igniter section 31 ′ in this embodiment includes an inductor L1 inserted between the polarity inversion circuit 5 and the high pressure discharge lamp 4, and a capacitor C1 inserted between the tap of the inductor L1 and the ground. It consists of a resonance circuit composed of When the resonance frequency of the resonance circuit is f1, the switching elements Q1 and Q2 of the polarity inverting circuit 5 are alternately turned on and off at the frequency f1, thereby charging the capacitor C1 when the switching element Q1 is turned on. Since the charge of the capacitor C1 is discharged when the capacitor is turned on, a high voltage pulse voltage can be generated in the inductor L1 by repeating such a resonance operation within the operable time T1 every intermittent time T2 (FIG. 23 (a )reference).

  Here, when the inductance value of the inductor L1 and the capacitance value of the capacitor C1 vary, the resonance frequency f1 also varies. Therefore, the switching frequency of the switching elements Q1, Q2 is continuously changed within the frequency range including the resonance frequency f1, that is, If sweeping is performed as shown in FIG. 23B, a high voltage pulse voltage can be generated using the peak voltage of the resonance circuit even if the component constant (inductance value or capacitance value) varies. FIG. 23B is a waveform diagram showing a state where the resonance voltage (high voltage pulse voltage) is swept during the operable time T1.

  By the way, as shown in FIG. 24B, if the igniter unit 31 ′ is operated intermittently by providing a period T11 during which the high-voltage pulse voltage is output and a pause period T12 during which the high voltage pulse voltage is not output within the operable time T1, Even when glow discharge occurs in the lamp, the increase in the temperature in the outer tube can be suppressed to prevent the occurrence of discharge in the outer tube. These periods T11 and T12 can be set by the timer unit 29, and the timer unit 29 serves as the sixth and seventh timer means.

1 is a circuit block diagram showing a first embodiment. It is a circuit diagram which shows the polarity inversion circuit and igniter part in the same as the above. It is operation | movement explanatory drawing of the timer part in the same as the above. It is operation | movement explanatory drawing of the igniter part in the same as the above. It is operation | movement explanatory drawing same as the above. It is the partially broken top view which shows a lighting fixture same as the above. The cable in the same as above is shown, (a) is a sectional view of a three-core cable, (b) is a sectional view of a two-core cable. It is other operation | movement explanatory drawing of a timer part in the same as the above. It is other operation | movement explanatory drawing in the igniter part in the same as the above. It is a circuit block diagram which shows another structure same as the above. It is operation | movement explanatory drawing in another structure same as the above. It is a circuit block diagram which shows another structure same as the above. It is operation | movement explanatory drawing in still another structure same as the above. It is operation | movement explanatory drawing in another structure same as the above. FIG. 9 is an operation explanatory diagram of the second embodiment. FIG. 6 is a circuit diagram showing a polarity inverting circuit and an igniter unit in Embodiment 3. FIG. 10 is an operation explanatory diagram of the fourth embodiment. It is operation | movement explanatory drawing same as the above. FIG. 9 is a circuit block diagram illustrating a fifth embodiment. It is operation | movement explanatory drawing same as the above. It is operation | movement explanatory drawing in another structure same as the above. FIG. 10 is a circuit diagram showing a polarity inverting circuit and an igniter unit in Embodiment 6. It is operation | movement explanatory drawing same as the above. It is operation | movement explanatory drawing of another structure same as the above. It is a circuit block diagram which shows the prior art example 2.

Explanation of symbols

2 Step-up Chopper Circuit 3 Step-down Chopper Circuit 4 High Pressure Discharge Lamp 5 Polarity Inversion Circuit 26 Second Control Circuit 26a Lighting Determination Unit 29 Timer Unit 31 Igniter Unit

Claims (20)

A lighting circuit unit for lighting a high-pressure discharge lamp by adjusting at least one of a voltage and a current supplied from an external power source to the high-pressure discharge lamp; and an igniter unit for applying a high-pressure pulse voltage for starting to the high-pressure discharge lamp; A lighting discriminating unit that discriminates whether or not the high-pressure discharge lamp is in a lighting state, and a first timer means that enables the operation of the igniter unit for a predetermined time while it is discriminated that the lighting discriminating unit is not in the lighting state; Second timer means for repeatedly intermittently operating the first timer means at a predetermined time interval, and at least a time sufficient for restarting the high-pressure discharge lamp, and prohibiting the operation of the igniter after the time has elapsed. a fourth timer means for counting the total time high-voltage pulse voltage is applied to the high-pressure discharge lamp from an igniter unit by the operation of the third timer means and the first and second timer means for, fourth Total time by the timer means and a fifth timer means for intermittent operation repeatedly first timer means instead of the second timer means with a long predetermined time interval than the second timer means after a predetermined time has elapsed A high pressure discharge lamp lighting device comprising: Sixth timer means for enabling the operation of the igniter section within the predetermined time of the first timer means, and seventh timer means for causing the sixth timer means to intermittently operate at predetermined time intervals. The high pressure discharge lamp lighting device according to claim 1. The predetermined time of the first timer means and the predetermined time interval of the second timer means are set so that the effective value of the output voltage of the lighting circuit section when the high pressure discharge lamp is inconspicuous is less than a predetermined value. The high pressure discharge lamp lighting device according to claim 1 or 2. The predetermined time interval of the predetermined time and a second timer means in the first timer means, Oite lighting circuit unit when not point of the high pressure discharge lamp, an igniter unit, the lighting determination unit or the first to seventh timer means The high pressure discharge lamp lighting device according to claim 1, wherein the lighting device is set so as not to exceed a maximum rating of circuit parts constituting the lamp. 5. The high pressure discharge lamp lighting device according to claim 4 , wherein the maximum rating of the circuit component is a rating for at least one of temperature, current, voltage and power of the circuit component . The high pressure discharge lamp lighting device according to any one of claims 1 to 5, wherein a return type temperature response switch that opens and closes a contact point according to temperature is used as the first and second timer means . 7. The high pressure discharge lamp lighting device according to claim 1 , wherein the predetermined time of the first timer means immediately after the start of the operation of the igniter section is set to a time sufficient for starting the high pressure discharge lamp. . The predetermined time interval of the predetermined time and a second timer means in the first timer means, to any one of claims 1 to 7, characterized in that the outer-tube discharge are set so as not to generate high-pressure discharge lamp The high pressure discharge lamp lighting device described. The high pressure discharge lamp lighting device according to any one of claims 1 to 8, wherein the lighting circuit portion is made of a copper-iron ballast . 10. The high pressure discharge lamp lighting device according to claim 9, wherein the igniter unit outputs a single high voltage pulse voltage near the peak of the AC power supply voltage supplied from the external power source to the lighting circuit unit . The high-pressure discharge lamp lighting device according to any one of claims 1 to 8, wherein the lighting circuit unit comprises an electronic ballast . 12. The high pressure discharge lamp lighting device according to claim 11 , wherein the lighting circuit unit outputs a rectangular wave alternating current, and the igniter unit superimposes the high voltage pulse voltage for starting on the output rectangular wave voltage of the lighting circuit unit . 13. The high pressure discharge lamp lighting device according to claim 12, wherein the igniter unit superimposes a single high voltage pulse voltage once per half cycle of the output rectangular wave voltage . 14. The high pressure discharge lamp lighting device according to claim 13, wherein the igniter unit superimposes a high voltage pulse voltage on a first half portion when a half cycle of the output rectangular wave voltage is divided into a first half and a second half . 15. The high pressure discharge lamp lighting device according to claim 14, wherein the igniter unit superimposes the high voltage pulse voltage immediately after the output rectangular wave voltage is inverted in polarity . The high pressure discharge lamp lighting device according to claim 11, wherein the igniter unit superimposes a high voltage pulse voltage using a resonance voltage . Power is supplied from the lighting circuit unit to the high-pressure discharge lamp via a cable in which a plurality of wires whose conductors are covered with an insulator having a thickness of 1 mm or less is covered with an insulating outer sheath. 17. A rectangular wave voltage alternating at a low frequency of up to several hundred hertz is output, and the igniter unit superimposes a high voltage pulse voltage of 3 to 5 kV on the rectangular wave output voltage of the lighting circuit unit . The high pressure discharge lamp lighting device according to any one of the above. A high-pressure discharge lamp with a rated lamp power of 35 to 75 watts is used as a load, the predetermined time in the first timer means is 3 to 5 seconds, and the predetermined time interval in the second timer means is 1 to 3 seconds. The high pressure discharge lamp lighting device according to any one of claims 1 to 17 . The load is a high-pressure discharge lamp with a rated lamp power of 150 watts, the predetermined time in the first timer means is 0.5 to 1.5 seconds, and the predetermined time interval in the second timer means is 1 to 3 seconds. The high pressure discharge lamp lighting device according to any one of claims 1 to 17 . A lighting fixture comprising the high-pressure discharge lamp lighting device according to any one of claims 1 to 19, a case for housing a lighting circuit portion and an igniter portion, a socket connected to a base of the high-pressure discharge lamp, and a high-pressure discharge lamp And a lighting circuit unit and an igniter unit provided with a lamp having a reflector that reflects light emitted from the light source and a cable in which a plurality of electric wires each having a conductor covered with an insulator are covered with an insulating outer sheath. A lighting fixture characterized by being connected to a socket .

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