CN100386004C - Discharge lamp lighting system and lighting device - Google Patents

Abstract

An object of the present invention is to provide a discharge lamp that can be used to light various types of hot cathode discharge lamps that have different but relatively similar rated power consumptions by a general-purpose discharge lamp lighting device, and that can make the light output of each discharge lamp close to the rated light output. devices, lighting systems and lighting devices using them. The electrode heating device 19 changes the electrode heating power according to the frequency of the high frequency generator 12 . For example, when the discharge lamp 21 with relatively high lamp power is turned on, the output frequency of the high-frequency generator 12 decreases, and the electrode heating power from the electrode heating device 19 decreases. Since the output power of the high-frequency generator is stably controlled, the portion using the difference in electrode heating power is close to the rated power consumption, and thus close to the rated light output.

Description

Discharge lamp lighting system and lighting device

technical field

The present invention relates to a discharge lamp lighting system and a lighting device for high-frequency lighting of a hot cathode discharge lamp.

Background technique

Discharge lamp lighting devices for lighting hot cathode discharge lamps such as fluorescent lamps are specially designed and manufactured according to the type of discharge lamp. Therefore, there is a problem that design takes time and management is troublesome.

In view of this, recent attempts have been made to light discharge lamps having approximately the same external dimensions and relatively similar characteristics with a general-purpose lighting device. For example, Japanese Patent Application Laid-Open No. 2001-267090 discloses a technique (conventional technique) for lighting fluorescent lamps having the same lamp current but different lamp voltages using a general-purpose lighting device.

[Patent Document] JP 2001-26790 (Page 6, Figure 1, Figure 2)

Conventional technology is basically a technology for supplying the same power to different types of discharge lamps. The structure adopted is to have a DC power supply and an inverter to stabilize the input voltage value. After detecting the input current of the inverter, the oscillation frequency of the inverter is controlled to stabilize the detected value.

However, in the prior art, since the same power is supplied to different types of discharge lamps, a rated light output corresponding to the rated power consumption (lamp) cannot be obtained from each discharge lamp. Although it is disclosed that different power can be supplied by setting the control limit of the inverter oscillation frequency, it is actually difficult to supply rated lamp power to various discharge lamps by this method.

The object of the present invention is to provide a discharge lamp capable of lighting various types of hot cathode discharge lamps having different but relatively similar rated power consumptions by a common discharge lamp lighting device and making the light output of each discharge lamp close to the rated light output A lighting system and a lighting device using the lighting system.

Contents of the invention

The discharge lamp lighting system described in the first aspect of the present application uses a general-purpose discharge lamp lighting device to light different types of hot cathode discharge lamps whose rated power consumption values are close to each other. The discharge lamp lighting device includes an output A DC power supply device with stable voltage control; a switching unit that supplies an output voltage from the DC power supply device and switches at a high frequency, and includes a resonant inductance component and a resonant capacitive component that receives switching output from the switch unit to make the hot cathode The high-frequency generating device of the load circuit of the type discharge lamp lighting; the high-frequency generating device supplies part of the output and supplies the electrode heating power to the hot cathode type discharge lamp, and at the same time changes the electrode heating power supplied to the discharge lamp according to the output frequency of the high-frequency generating device The electrode heating device; the electrode heating device that controls the change of the output frequency of the high-frequency generating device; and the power control device that controls the output frequency of the high-frequency generating device so that the current flowing through the switching unit of the high-frequency generating device is stable. At least each rated lamp voltage value of the discharge lamp is different. When using the discharge lamp lighting device to light the different types of discharge lamps, the output frequency of the high-frequency generating device is changed, so that the discharge with a smaller rated power consumption value The greater the lamp and electrode heating power.

In the present invention and each of the following inventions, unless otherwise specified, each constitution and term are defined as follows. The rated power consumption value or the rated lamp voltage value does not necessarily have to be a value prescribed by a standard or the like, and may be, for example, a value in a product catalog or a center value of a certain type of discharge lamp design. In addition, the so-called rated power consumption values are close to each other means that the difference between the power values of a certain discharge lamp and other discharge lamps is within approximately 20%. However, the closer the light output is, the closer to the rated light output can be obtained from each discharge lamp, and it is preferably within ±7 to 8%, more preferably ±5%, with respect to the design value described later.

The DC power supply device can use a battery, a power supply that rectifies or rectifies and filters commercial AC voltage, a rectifier circuit connected to a commercial AC power supply, a power supply for a boost chopper circuit for high power factor and low distortion, and a common high-frequency power supply described later. The switching device of the generating device has the same high power factor and low distortion effect of input current as the boost chopper circuit for high power factor and low distortion mentioned above, and obtains a power supply of filtered DC voltage, etc. Furthermore, as this DC power supply device, the output voltage is stably controlled.

As the switching unit of the high-frequency generating device, one having one switching device or having two or more (including two) switching devices is acceptable. As the switching device, bipolar transistors, field effect transistors, and the like can be used. The switching control of the switching unit can be carried out by using an IC with an oscillating device, which is the so-called self-excited type, or by using a current transformer to feed back its own oscillation output, which is the so-called self-excited type.

The electrode heating device may be a device specially provided with a transformer structure, or other components such as an electrode heating coil may be provided for an inductance coil providing an inductance component for resonance. Furthermore, an impedance element for the flow of electrode heating current may be provided between the non-power supply side ends of a pair of electrodes of the discharge lamp. As a structure in which the electrode heating power is changed according to the frequency of the high-frequency generator, it is preferable to use an inductor and a capacitor whose impedance value changes with frequency, since the circuit structure can be simplified. However, it is not limited thereto, and the electrode heating power may be changed by directly monitoring the switching frequency of the switching means.

The power control device detects the current (preferably effective value) flowing through the switching unit of the high-frequency generating device, and then controls the switching frequency of the switching unit of the high-frequency generating device to stabilize the current. In addition, when the switching control device of the switching unit is a separate excitation type, for example, the detection current signal can be converted into a voltage, and then the oscillation output of the oscillation device can be changed by the V-F conversion device. In addition, in the case of the self-excited type, for example, the feedback amount can be changed according to the detection current signal, and the switching frequency can be changed in this way.

According to the invention described in the first aspect of the present application, when lighting different types of discharge lamps with relatively similar rated power consumption, the output frequency of the high-frequency generating device varies with the current value (detection current) of the current flowing through the switching unit. different. That is, since the rated lamp voltage value of each discharge lamp is different, the lamp current and the output frequency are also different depending on the type of the discharge lamp. Therefore, for example, in the case of a discharge lamp with a relatively large rated power consumption value, when it is desired to use a general-purpose lighting device to light a relevant discharge lamp group whose output frequency of the high-frequency generating device is small, the electrode heating device must be set to The relationship between the power supply amount and the frequency has a positive correlation. In this case, when the discharge lamp with a relatively large rated power consumption value is turned on, the output frequency of the high-frequency generating device is reduced, and the electrode heating power from the electrode heating device is relatively reduced. Since the voltage input to the high-frequency generating device is stable, the input current, that is, the current flowing through the switching unit is stable, so the input power and then the output power are stably controlled, and the electrode heating power is relatively small, so the reduction in power consumption (lamp) is small .

When the discharge lamp with a relatively small rated power consumption value is turned on, the electrode heating power of the high-frequency generating device is relatively increased. Since the output power of the high-frequency generating device is stably controlled, the electrode heating power increases, while the lamp power decreases more. Therefore, even if each discharge lamp is lit with a high-frequency generator having a stable output power, there is a difference in the electrode heating power, and each discharge lamp is close to the rated power, and further close to the rated light output. In this case, although the amount of change in the electrode heating power can be set arbitrarily to some extent, it is best to stop it during lighting without causing excessive electrode heating or insufficient heating. electrode heating, in which case zero can be used as the lower limit).

In addition, for example, in the case of a discharge lamp with a relatively high lamp power, when it is desired to use a general-purpose lighting device to light a related lighting lamp with a relatively high output frequency of the high-frequency generator, the power supply amount of the electrode heating device must be adjusted The relationship with frequency has a negative correlation. In this case as well, it should be easy to understand from the above description that each discharge lamp can approach the rated power consumption and further approach the rated light output when lighting each discharge lamp.

In some cases, the discharge lamp described above can also be turned on. Although it can be used arbitrarily, it should be clearly distinguished because the effect of the present invention cannot be obtained in this case.

The lighting system described in the second aspect of the present application uses a general-purpose discharge lamp lighting device to light different types of hot cathode discharge lamps whose rated power consumption values are close to each other. A high-frequency generator for constant power control of the sum of the power consumption of the discharge lamp and the power supplied to the electrodes of the discharge lamp; The electrode heating device with variable power changes the output frequency when lighting the different types of discharge lamps, so that the discharge lamp with lower rated power consumption has higher electrode heating power.

The high-frequency generating device of the second invention of the present application is not particularly limited to the input power supply device and the control device.

In the invention described in the second aspect of the present application, if the combination of discharge lamps having the relationship described in relation to the invention in the first aspect of the present application is lit, the lamp power of each discharge lamp is close to the rated power consumption by adjusting the electrode heating power. value.

The lighting system described in the third aspect of the present application uses a general-purpose discharge lamp lighting device to light a variety of hot cathode discharge lamps with different but relatively similar rated power consumption. A DC power supply device with stable control; it has a switching unit that supplies an output voltage from the DC power supply device and switches at a high frequency, and includes a resonant inductance component and a resonant capacitive component that receives switching output from the switching unit. High-frequency generating device for the load circuit of the discharge lamp lighting; the high-frequency generating device supplies part of the output and supplies the electrode heating power to the hot cathode type discharge lamp, and at the same time changes the electrode heating power supplied to the discharge lamp according to the output frequency of the high-frequency generating device an electrode heating device; and a power control device for controlling an output frequency of the high-frequency generating device such that a current flowing through a switching unit of the high-frequency generating device is stabilized.

In the invention described in claim 3 of the present application, the term that the rated power consumptions are different but relatively close means the same as the case where the rated power consumption values are close to each other in the invention described in claim 1 of the present application. In the invention described in the third aspect of the present application, if the combination of discharge lamps with the relationship described in the first aspect of the present application is lit, the lamp power of each discharge lamp will be close to the rated power by adjusting the electrode heating power. power consumption value.

The discharge lamp lighting system according to the fourth aspect of the present application is in the discharge lamp lighting system described in any one of the first to third aspects of the present application, wherein the different types of discharge lamps have relatively smaller rated power consumption values The discharge lamp combination whose rated lamp voltage value is relatively larger, when the discharge lamp lighting device lights each discharge lamp, there is a positive correlation between the output frequency and the electrode heating power frequency zone action.

The invention described in claim 4 of the present application relates to the invention described in claim 1 of the present application, in which the output frequency of the high-frequency generating device is relatively small in the case of a discharge lamp with a relatively large rated power consumption value. When the discharge lamp group having such a relationship is lit, it is specified that the relationship between the power supply amount of the electrode heating device and the frequency has a positive correlation relationship. Therefore, the effects of the invention described in claim 4 of the present application are the same as those described above.

The discharge lamp lighting system described in the fifth aspect of the present application is that in the discharge lamp lighting system described in any one of requirements 1 to 3, the different types of discharge lamps are discharge lamps with relatively smaller rated power consumption values. A combination of discharge lamps whose rated lamp voltage value is relatively smaller, when the discharge lamp lighting device lights each discharge lamp, the output frequency has a negative correlation with the electrode heating power. area action.

The invention described in claim 5 of the present application is related to the invention described in claim 1 of the present application, in the case of a discharge lamp with relatively high lamp power, the output frequency of the high-frequency generating device is relatively high. The discharge lamp group is turned on, and the relationship between the power supply amount of the designated electrode heating device and the frequency has a negative correlation. Therefore, the effect of the invention described in claim 5 of the present application is the same as that described above.

The discharge lamp lighting system described in the sixth aspect of the present application uses a general-purpose discharge lamp lighting device to light different types of hot cathode discharge lamps whose rated power consumption values are close to each other. The discharge lamp lighting device includes an output A DC power supply device with stable voltage control; a switching unit that supplies an output voltage from the DC power supply device and switches at a high frequency, and includes a resonant inductance component and a resonant capacitive component that receives switching output from the switch unit to make the hot cathode A high-frequency generating device for the load circuit of a type discharge lamp; a high-frequency generating device that supplies part of the output and supplies electrode heating power to the discharge lamp, and an electrode heating device that changes the electrode heating power supplied to the discharge lamp according to the lamp voltage value of the discharge lamp and a power control device that controls the output frequency of the high-frequency generating device so that the current flowing through the switch unit of the high-frequency generating device is stable. When the device lights the different types of discharge lamps, the electrode heating power is increased for discharge lamps with smaller rated power consumption values.

In the invention described in claim 6 of the present application, the electrode heating means is provided to be affected by the voltage value of the discharge lamp or other impedance means in the load circuit. For example, an impedance element for the electrode heating current to flow is provided between the non-power-supply side ends of a pair of electrodes of the discharge lamp. In this case, if there is no frequency-dependent variation factor, the electrode heating power increases as the lamp voltage value increases. If the frequency-related change factor is added in a relationship with the sum, the adjustment effect of the utilization of the electrode heating power can be further increased. In addition, an electrode heating device may be provided in a component exhibiting a resonant inductance component or a resonant capacitive component, and in this case, the electrode heating power can also be changed according to the lamp voltage value.

The invention described in claim 6 of the present application is a combination of a discharge lamp having a smaller rated lamp voltage value with respect to a discharge lamp having a larger rated power consumption value. In this way, when the discharge lamp with a relatively high rated power consumption is turned on, the electrode heating power from the electrode heating device is relatively small. On the other hand, when a discharge lamp with a relatively small rated power consumption value is turned on, the electrode heating power from the electrode heating device is relatively large. Since the output power of the high-frequency generating device is stably controlled, each discharge lamp approaches the rated power consumption and further approaches the rated light output by utilizing the difference in electrode heating power as described above.

In the discharge lamp lighting system described in claim 7 of the present application, different types of hot cathode discharge lamps whose rated power consumption values are close to each other are lit by a general-purpose discharge lamp lighting device, and the discharge lamp lighting device has a discharge lamp The high-frequency generating device that performs constant power control of the sum of the power consumption and the power supplied to the electrodes of the discharge lamp; and an electrode that supplies heating power to the electrodes of the discharge lamp and changes the heating power supplied to the electrodes of the discharge lamp according to the lamp voltage value of the discharge lamp The heating device, when lighting the different types of discharge lamps, increases the electrode heating power for the discharge lamp with a smaller rated power consumption value.

The high-frequency generating device of the invention described in claim 7 of the present application is also not particularly limited to the input power supply device and the control device.

According to the seventh aspect of the present application, when the same discharge lamp combination as that of the sixth aspect of the present application is turned on, the lamp power of each discharge lamp is close to the rated power consumption value by adjusting the electrode heating power.

The discharge lamp lighting system described in the eighth aspect of the present application uses a general-purpose discharge lamp lighting device to light various hot cathode discharge lamps with different but relatively similar rated power consumptions. The discharge lamp lighting device includes a DC power supply Device; having a switching unit that supplies an output voltage from a DC power supply device and performs switching at a high frequency, and a load circuit that includes a resonant inductance component and a resonant capacitive component and receives a switching output from the switching unit to light a hot cathode discharge lamp The high-frequency generating device; the high-frequency generating device supplies a part of the output and supplies the electrode heating power to the hot cathode type discharge lamp, and at the same time changes the electrode heating power supplied to the discharge lamp according to the lamp voltage of the discharge lamp; and the electrode heating device for the high-frequency generating device A power control device for stabilizing the output power of the device.

In the invention described in claim 8 of the present application, the DC power supply device does not necessarily need to stably control the output voltage. In addition, when the output of the DC power supply device is stable, the input current of the high-frequency generating device can also be detected, and the output frequency of the high-frequency generating device can be controlled to stabilize the input current. That is, in this case, since the input voltage of the high-frequency generating device and the output voltage of the DC power supply device are stabilized, if the input current is stably controlled, the product thereof, that is, the input power and thus the output power are also stabilized.

In the electrode heating device, for example, a heating transformer may be provided in parallel with the discharge lamp, or the impedance value of the electrode heating circuit may be changed according to the lamp voltage.

The power control device is to detect the output voltage and output current (preferably all effective values) of the high-frequency generating device, and then control the DC power supply device and/or the high-frequency generating device so that their product is stable.

In the invention described in claim 8 of the present application, when different types of discharge lamps having relatively similar rated power consumption are turned on, the lamp voltage varies depending on the type of discharge lamp. Therefore, for example, when a general-purpose lighting device is used to light a discharge lamp group having a low rated power consumption but a corresponding high rated lamp voltage, the relationship between the power supply amount of the electrode heating device and the lamp voltage has a positive correlation. In this case, when the discharge lamp whose rated power consumption is relatively small is turned on, the lamp voltage increases, and the electrode heating power from the electrode heating device increases.

When a discharge lamp with a relatively high rated power consumption is turned on, the lamp voltage decreases and the electrode heating power from the electrode heating device decreases. Since the output power of the high-frequency generator is stably controlled, the difference in electrode heating power is used to approach the rated power consumption in each discharge lamp, thereby approaching the rated light output.

In addition, for example, when a general-purpose lighting device is intended to light a discharge lamp group having relatively high lamp power and correspondingly low lamp voltage, the relationship between the power supply amount of the electrode heating device and the lamp voltage has a negative correlation. Also in this case, when each discharge lamp is turned on, the power consumption can be close to the rated power consumption and the light output can be close to the rated light output, which can be easily understood from the above description.

The lighting device described in the ninth aspect of the present application includes a lighting device body capable of supporting different types of hot cathode discharge lamps whose rated power consumption values are close to each other; and the different types of hot cathode discharge lamps supported by the lighting device body The discharge lamp lighting system according to any one of the first to third aspects of the present application for lighting a discharge lamp.

The invention described in claim 9 of the present application provides a lighting device capable of achieving the same effect as any one of the above-mentioned inventions in various aspects of the present application.

Description of drawings

Fig. 1 is a circuit diagram of a first embodiment of the present invention.

Fig. 2 is a circuit diagram of a second embodiment of the present invention.

Fig. 3 is a simplified perspective view of an embodiment of the lighting device of the present invention.

Fig. 4 is a circuit diagram of a third embodiment of the present invention.

Label description

1 DC power supply device, 12. High frequency generating device, 19, 40, 53, 54. Electrode heating device, 22, 50. Power control device, 23. Current detection device, 60. Lighting device body.

Detailed ways

Embodiments of the present invention will be described below with reference to the drawings. First, the first embodiment of the present invention will be described.

Fig. 1 is a circuit diagram of a discharge lamp lighting device according to a first embodiment. 1 is a DC power supply device, which has a commercial AC power supply 2 , a high-frequency cut filter 3 , a rectifier 4 and a step-up chopper device 5 . The step-up chopper device 5 has an inductor 6 for power storage, a switching device 7, a filter capacitor 8, a diode 9 for preventing reverse current, a detection device 10 for detecting the voltage across the filter capacitor 8, and according to the detection device 10 The detected value of the control device 11 controls the duty ratio of the switching device 7 to stabilize the voltage across the filter capacitor 8 .

12 is a high-frequency generating device, which is composed of a switch unit 13 and a load circuit 14 . The switch unit 13 has a pair of switch devices 15 and 16 connected in series to each other, and a switch control device 17 for the switch devices 15 and 16 . The switching devices 15 and 16 are, for example, bipolar transistors, and in this case, diodes are connected in parallel with opposite polarities to each transistor. That is, the cathode is connected to the positive terminal of the smoothing capacitor 8 .

The load circuit 14 has a parallel circuit of a DC blocking capacitor 18 , a ballast/electrode heater 19 providing an inductance component for resonance, a resonant starting capacitor 20 providing a capacitive component for resonance, and a discharge lamp 21 .

The power control device 22 has a current detection device 23 that detects the current flowing through the switch unit 13, which is composed of a resistor connected in series with the switch device 16, and a comparator that compares the average or effective value of the detected value with a reference signal 24. 25. According to the output of the comparator 25, control the switching frequency of the switch control device 17, so that the current value is stable.

The electrode heating device 19 has a pair of electrode heating coils 30 and 31 and current limiting capacitors 32 and 33 .

The function of the circuit is explained below. Set the output power design value of the high-frequency generating device 12 to about 32 watts, as the discharge lamp 21, the relatively large discharge lamp such as FLR40S/M/36 (produced by Toshiba Laitek Co., Ltd.) is used to light the discharge lamp , the output frequency of the high-frequency generating device 12 is about 60 kHz. In addition, when a discharge lamp FHF32 (manufactured by Toshiba Laitek Corporation) having a relatively small rated power consumption is turned on as the discharge lamp 21 , the output frequency of the high-frequency generator 12 is about 70 kHz. If the rated power consumption of FLR40S/M/36 is 31W, and the rated power consumption of FHF32 is 30W, then even if the output power of the high-frequency generating device 12 is constant, about 32W, but due to the output frequency and the current limiting capacitors 32 and 33 The relationship between the impedances of the lamps makes the electrode heating power different, so the power supplied to each discharge lamp can be made close to the rated power consumption.

Specific examples shown below

The above-mentioned FLR40S/M/36 (in fact, according to different light source colors, etc. are marked with D or W (the rated lamp power listed in the product catalog is 36W, and the lamp current is 0.440A, and the rated lamp power of FHF32 (same as above) is also listed. The lamp current is 32W, and the lamp current is 0.255A. Using the discharge lamp lighting device with the structure shown in Figure 1 and the designed output power of 32.5W (excluding the circuit loss part), the two discharge lamps are lit, and the results are as follows .

FLR40S/M/36: frequency 60kHz, power consumption (lamp) 31.5W, electrode heating power 1.5W.

FHF32 : frequency 72kHz, power consumption (lamp) 30.0W, electrode heating power 2.5W.

As described above, in each discharge lamp, the rated lamp power can be approached. In addition, what value the output power value of the discharge lamp lighting device is designed to be arbitrary.

On the other hand, when trying to light different types of discharge lamps at a constant power without considering the characteristics of the discharge lamps, it is obvious that at least one type of discharge lamp will be lit at a power that is significantly different from the rated power consumption. It is difficult to obtain the required light output by lighting.

In addition, in the above-mentioned embodiment, the case where the FLR40S/M/36 and the FHF32 are turned on is shown, but as described in the item of the device for accomplishing the problem related to the inventions of the first to eighth aspects of the present application, by Combining a discharge lamp having a specific relationship with a discharge lamp lighting device having a specific characteristic can obviously provide the same effect. In addition, the discharge lamp may be not only a straight tube type, but also a curved discharge lamp such as a ring type.

Fig. 2 is a circuit diagram of another embodiment of the present invention. The electrode heating device 40 of this embodiment is connected in parallel to the discharge lamp 21 . In addition, the power control device 50 includes a voltage detection device 51 and a multiplication device 52 for multiplying the detection value of the current detection device 23 in addition to the device shown in FIG. 1 . In addition, the switching control device is omitted from illustration, and the switching frequency of the switching means is controlled by the power control device 50 .

In addition, as the power control device, in addition to the above, for example, a well-known device may be used to change the input voltage value from the DC power supply device, and other forms may also be used. Therefore, in this case, although the electrode heating power cannot be expected to change by changing the frequency, it can be changed by changing the lamp voltage value.

Other functions of the present embodiment are easy to understand from the previous description, so detailed description is omitted.

Fig. 4 is a circuit diagram showing a third embodiment of the present invention. The same reference numerals are assigned to the same or corresponding parts as those in Fig. 1, and description thereof will be omitted.

In the present embodiment, the electrode heating device 53 is a capacitor provided in parallel with the discharge lamp 21 so that an electrode heating current can flow through the discharge lamp 21 . Therefore, in this embodiment, as the frequency increases, the electrode heating power decreases.

In addition, in FIG. 4 , an electrode heating device 54 constituted by an inductor shown by a dotted line may be connected in parallel with the above-mentioned electrode heating device 53 . In this case, as the frequency increases, the electrode heating power will increase.

Since the operation of this embodiment is easy to understand, the description is omitted.

In addition, in the present invention, various embodiments described above may be combined, or arbitrary parts may be replaced to produce modified embodiments.

Fig. 3 is a simplified perspective view showing an embodiment of the lighting device of the present invention. In addition, the same code|symbol is attached|subjected to the same part as FIG. 1, and description is abbreviate|omitted. The lighting device body 60 shown in FIG. 3 is a direct-mounted lighting fixture that is directly installed on a ceiling or the like. The lighting device body 60 has a pair of lamp pins 61 and 61 at both ends of its lower surface, and the discharge lamp 21 is installed between the two lamp pins 61 and 61 . In addition, a reflector 62 that forms a reflective surface 62a for reflecting emitted light from the discharge lamp 21 is mounted on the lighting device main body 60 so as to face the illuminant of the discharge lamp 21 . In addition, in the lighting device main body 60, the discharge lamp lighting device 63 is arranged on the back side of the reflecting surface 62a.

In addition, when different types of discharge lamps having the above-mentioned relationship are attached to the lamp pins 61 and 61 for lighting, each discharge lamp can be lit with a power close to the rated power consumption, and each discharge lamp can obtain a light output close to the rated power.

In addition, the main body of the lighting device may be a suspension type or a wall-mounted type besides a DC-mounted lighting device, and it may be any form of the main body lamp of the lighting device for a ring discharge lamp.

According to the inventions described in claims 1 to 8 of the present application, it is possible to light a plurality of types of hot cathode type discharge lamps having different but relatively similar rated power consumptions by a general-purpose discharge lamp lighting device. In addition, by adjusting the electrode heating power according to the type of the discharge lamp, it is possible to approach the rated power consumption of each discharge lamp and make the light output close to the rated light output.

According to the invention described in claim 9 of the present application, it is possible to provide a lighting device that achieves the same effects as those of the inventions described in claims 1 to 8 of the present application.

Claims (8)

1. A discharge lamp system for lighting different types of hot cathode discharge lamps whose rated power consumption values are close to each other by a general-purpose discharge lamp lighting device, characterized in that, The discharge lamp lighting device includes A high-frequency generating device for constant power control of the sum of the power consumption of the discharge lamp and the power supplied to the electrodes of the discharge lamp by controlling the oscillation frequency, and An electrode heating device that supplies electrode heating power to the discharge lamp and simultaneously changes the electrode heating power supplied to the discharge lamp according to the output frequency of the high-frequency generating device, When lighting the different types of discharge lamps, the output frequency is changed so that the discharge lamp with a smaller rated power consumption value has a larger electrode heating power. 2. A discharge lamp lighting system for lighting different types of hot cathode discharge lamps having different but relatively similar rated power consumptions using a general-purpose discharge lamp device, characterized in that: The discharge lamp lighting device includes A DC power supply unit that stabilizes the output voltage, It has a switching unit that supplies an output voltage from a DC power supply device and switches at high frequency, and a load circuit that includes a resonant inductance component and a resonant capacitive component that receives switching output from the switching unit to light a hot cathode discharge lamp. frequency generating device, An electrode heating device that is supplied with a part of the output of the high-frequency generating device, supplies electrode heating power to a hot-cathode type discharge lamp, and simultaneously changes the electrode heating power supplied to the discharge lamp according to the output frequency of the high-frequency generating device, and A power control device that controls the output frequency of the high-frequency generator to stabilize the current flowing through the switching unit of the high-frequency generator. 3. The discharge lamp lighting system according to any one of claims 1 to 2, wherein: The different types of discharge lamps are a combination of discharge lamps in which the relatively smaller rated power consumption value of the discharge lamp has a relatively larger lamp rated voltage value, When the discharge lamp lighting device lights each of the discharge lamps, it operates in a frequency region where the relationship between the magnitude of the output frequency and the magnitude of the electrode heating power shows a positive correlation. 4. The discharge lamp lighting system according to any one of claims 1 to 2, characterized in that, The different types of discharge lamps are a combination of discharge lamps in which the discharge lamp with a relatively smaller rated power consumption value has a relatively smaller lamp rated voltage value, The discharge lamp lighting device operates in a frequency region where the relationship between the magnitude of the output frequency and the magnitude of the electrode heating power exhibits a negative correlation when lighting the respective discharge lamps. 5. A discharge lamp lighting system for lighting different types of hot cathode discharge lamps whose rated power consumption values are close to each other by using a general-purpose discharge lamp lighting device, wherein: The discharge lamp lighting device includes A DC power supply unit that stabilizes the output voltage, It has a switching unit that supplies an output voltage from a DC power supply and switches at high frequency, and a load circuit that includes a resonant inductance component and a resonant capacitive component that receives switching output from the switching unit to light a hot cathode discharge lamp. frequency generating device, an electrode heating device that is supplied with a part of the output of the high-frequency generating device, supplies electrode heating power to the discharge lamp, and changes the electrode heating power supplied to the discharge lamp according to the lamp voltage value of the discharge lamp, and A power control device that controls the output frequency of the high-frequency generating device to stabilize the current flowing through the switching unit of the high-frequency generating device, The rated voltage values of the lamps of the different types of discharge lamps are different, When using the discharge lamp lighting device to light the different types of discharge lamps, the electrode heating power is increased for discharge lamps with smaller rated power consumption values. 6. A discharge lamp lighting system for lighting different types of hot cathode discharge lamps whose rated power consumption values are close to each other using a general-purpose discharge lamp lighting device, characterized in that: The discharge lamp lighting device includes A high-frequency generating device for constant power control of the sum of the power consumption of the discharge lamp and the power supplied to the electrodes of the discharge lamp, and An electrode heating device that supplies electrode heating power to the discharge lamp and simultaneously changes the electrode heating power supplied to the discharge lamp according to the voltage value of the discharge lamp, When lighting the different types of discharge lamps, the electrode heating power is increased for the discharge lamp with a smaller rated power consumption value. 7. A discharge lamp lighting system, which uses a general-purpose discharge lamp lighting device to light various types of hot-cathode discharge lamps having different but relatively similar rated power consumptions, characterized in that: The discharge lamp lighting device includes DC power supply unit, It has a switching unit that supplies an output voltage from a DC power supply and switches at high frequency, and a load circuit that includes a resonant inductance component and a resonant capacitive component that receives switching output from the switching unit to light a hot cathode discharge lamp. frequency generating device, an electrode heating device that is supplied with a part of the output of the high-frequency generating device, supplies electrode heating power to a hot cathode type discharge lamp, and changes the electrode heating power supplied to the discharge lamp according to the lamp voltage of the discharge lamp, and A power control device for stably controlling the output power of a high-frequency generator. 8. A lighting device, characterized in that it comprises A lighting device body capable of supporting different types of hot cathode type discharge lamps whose rated power consumption values are close to each other, and The discharge lamp lighting system according to any one of claims 1 to 2 for lighting the different types of hot cathode discharge lamps supported by the lighting device body.

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