TW538654B - Discharge lamp lighting device - Google Patents

Abstract

The subject of the invention is to provide a discharge lamp lighting device applicable to a discharge lamp having different rated values. In the structure of the invented discharge lamp lighting device, an inverter circuit 2 is used for generating a high frequency current from the DC power supply 1, and the high frequency current is then used for lighting a discharge lamp 5c in a discharge lamp loading circuit 5. The invention includes the followings: a current detecting circuit 6 for detecting a current provided from the inverter circuit 2 to the discharge lamp loading circuit 5; the reference voltage circuit 14, which outputs different kinds of reference voltages; an error amplifier 9, which generates a control signal in accordance with the output of the current detecting circuit 6 and the reference voltage of a reference voltage circuit 14; and an inverter driving circuit 3, which controls the inverter circuit 2 according to the control signal from the error amplifier 9 so as to control a current provided for the discharge lamp loading circuit 5; and the reference voltage selection apparatus 19, which selects the reference voltage output from the reference voltage circuit 14.

Description

538654

V. Description of the invention (1) Technical field of the invention The present invention relates to a discharge lamp lighting device using a self-discharge lamp. The high-frequency power of the inverter circuit of the conventional technology lights up. Figure 24 shows the conventional discharge lamp point. T ^ ^ # ^ ° ^ «2 4, source, 2 are powered by switching elements 2a, 2 such as MOSFETs. It is an inverter driving electric / inverter circuit that drives the inverter circuit 2. The coupling capacitor connected to the output side of the wheel 2 is the second phase inversion by anti-production J: circuit container 5 b and discharge lamp 5 c. The discharge lamp load circuit L coil a, starting electrical resistance 7, integral circuit 8 with resistance 8a and capacitor 8c (detection constitutes and detects the load circuit of the discharge lamp 5 ^ 1 filter) circuit, 9 series Error amplifier, 10a and =; = The resistance and capacitor used in the measurement, the error voltage of the error amplifier 9: =: 9 of the integral sub-circuit 8 output voltage, and the non-inverting input voltage is used in Yamaue's DC output 11 It has a reference voltage quasi-voltage with the division resistors 2 and i 3, and the difference between the two voltages is returned to the inverter drive circuit 3 via the error path = the base number. In addition, the system is & An example of a structure for obtaining DC current 1 from a commercial power source is shown in Figure 25. As shown in Figure 25, —, / ;! L 龟 源 电 桥 1 b After full-wave rectification from commercial power source la, after six-body conversion, it is output to the load circuit as a direct current: / 月 tun today ^ 1C smoothed below, the inverter drive circuit 3 of the circuit of the conventional example shown in FIG. 24 will be explained. Drive the inverter circuit 2 眭 丄 * ^ 4? Can be supplied by DC power supply 1 538654 V. Description of the invention (2) The current is converted into high-frequency current, and the discharge lamp negative cry lamp 5c is turned on. The discharge lamp load circuit 5 is connected to "Fen ^ 4", and the switching element 2a is connected to "On" and "Off", and the mouth passes through the forward and reverse (regeneration direction) shown in Fig. 26 to generate electricity and block 7 currents. , The circuit loss, the effective component of the AC current (forward and = electric sum. Hereinafter referred to as the net current) in the discharge lamp "as power consumption ·. In addition, the current detected by the detection resistor 7 is the sum of the reverse current and the reverse current (net current) in the integral R9 and r9 ports, corresponding voltage input; amplify ^ its feed wheel Incoming. In addition, at the non-inverting input terminal of the error amplifier 9, the reference voltage generated by dividing the reference voltage with DC 'and the voltage of the reference voltage by dividing resistors 12 and 13 is used to divide the reference voltage, and the error is amplified by 9 The voltage between the reference voltage and the output voltage from the integration circuit 8 is used as i:,:, and the integral resistor ⑽ and capacitor ⑽ are used to integrate: ★ Road 32: i phase drive circuit 3 feedback, use Inverter drive = 3 control. Control the switching frequency of inverter circuit 2 and adjust the high-frequency current from Straight 2 to the lamp load circuit 5. Therefore, the discharge lamp load is controlled according to the frequency of the inverter's knife switch frequency. For the high-frequency current of circuit 5, if the switching frequency of circuit 2 is controlled to keep the output voltage of the integrating circuit 8 equal to the reference voltage, in the case where the output voltage of the DC power source is fixed, the power supplied to the discharge lamp 5 can be maintained at a fixed value. The problem to be solved by the invention: 疋 In the conventional discharge lamp lighting device which is not known in the above FIG. 24, each lighting device is fixed with a reference voltage from the reference voltage circuit 14 wheels, so that it has the same amount of adaptability. Fixed value discharge lamp, need to be in advance Prepare multiple resistances

Page 7 538654 V. Description of the invention ⑶ The current coil 5a or the starting capacitor 5b, etc. will be described in detail, and the order pieces will be compatible with the installed discharge setting ί preparation and discharge ^^ or in the case of serialization of commodity groups In advance Γ :: ί; the problem that the discharge value of a variety of discharge lamp sets corresponding to the rated value will make the official management of the parts or the production management cost more expensive. 4Inventory management becomes complicated and complicated. After installing the discharge lamp lighting device, Zhaoli changed the rating to the rated value, etc., and returned, installed, and installed the discharge lamp lighting with i 3 packs of lights. There is a problem that the freight L of the device becomes expensive due to the purchase cost or the & fee of the present invention. In order to solve the problem of talking about 1 point on the conventional device, the first a of the present invention refers to the point above + clothing straight through a discharge lamp lighting supply-a kind of discharge lamp lighting electric lamp, which can reduce the number of different Amount ~ The management cost of parts management by Wang Chan Rishou. A second object of the present invention is to provide a discharge lamp lighting device in which the value of k is changed after installation. A third object of the present invention is to provide a discharge lamp lighting device that can be easily changed in rating. The fourth objective of the present invention is to provide a discharge lamp set. By automatically changing the rating of the discharge lamp, it is easier to change and it is possible to change the rated current exceeding the rated value without any electrical knowledge. Over-discharge lamp, you don't have to let it go. A fifth object of the present invention is to provide a discharge lamp lighting device suitable for use in discharge lamps having a plurality of ratings. The lamp 5 c needs to be lit and installed. If there is a degree of tube or power saving, the discharge needs to be replaced and the device is figured out. The fixed value can be used to adjust the discharge lamp lighting rating and value to prevent electric lights. Shouyi discharge lamp

538654 V. Description of the invention (4) In addition, the change of the current and control system is used to solve the problem: the direct current is converted into a high inverter circuit of the inverter circuit, which can output the current detection voltage to generate The control signal of the controller > charge control current value; and the reference power output, is it right on the structure? In the present invention, the above-mentioned sources are used to set the value; the inverse high-frequency electric current supplies the signals of various circuits, and the signal is controlled to be from the reference voltage. The present invention utilizes the phase current of the purpose of the sixth section of the hand when changing the hand; puts the party to discharge the discharge lamp with the same base output and the inverter. The inversion reference voltage selection purpose is to provide a discharge lamp with a strong accompanying discharge. Brightness of the lamp (light wheel out) = also excellent in suitability. Take the circuit of the present invention, the electric lamp will load the electric lamp; the electric load circuit quasi-voltage; from the reference drive circuit device circuit, the voltage circuit input device, the discharge lamp is selected to point the DC power circuit, and the current of the current detection circuit is used; The error amplifier voltage circuit wheel is selected from the reference lamp device package according to the reference power from the discharge, the supplied DC is from the reverse phase, and the error is detected from the quasi-voltage power. The discharge lamp lighting device of the electric voltage circuit wheel corresponding to the load circuit voltage, the reference voltage selection and puncturing operation is selected from the output of the reference voltage circuit. ^ Preparation JL, In the discharge lamp lighting device of the present invention, the reference voltage circuit The DC voltage source for the reference voltage and the DC resistor for dividing the reference voltage and the division resistance of the winter box 1 are used to generate a reference voltage generating section for selecting a reference voltage corresponding to a preset discharge lamp rated value, and the reference On the voltage clothing structure, the reference voltage generated from the reference voltage generating section is

538654 V. Reference voltage for selecting output in description of invention (5). In the discharge lamp lighting device of the present invention, the reference voltage circuit includes a DC power supply for a reference voltage, a division resistor for dividing a voltage of the DC power supply for the reference voltage, and the reference voltage selection device connected in parallel with the division resistor. The reference voltage selection device selects a reference voltage output from the reference voltage circuit by selecting a bypassed split resistor in structure. In the discharge lamp lighting device of the present invention, a jumper is used for the reference voltage selection device. In addition, the discharge lamp lighting device of the present invention is structured to provide the jumper on a circuit board on which the error amplifier is assembled, and to set a working hole on the circuit board on which the jumper is assembled. Check and cut off the setting status of the jumper. In the discharge lamp lighting device of the present invention, the reference voltage circuit is provided on a circuit board on which the error amplifier is incorporated. In the discharge lamp lighting device of the present invention, the circuit board on which the reference voltage selection device is assembled is stored in a metal case formed with an opening portion, and the setting status of the reference voltage selection device can be performed from the opening portion. Confirm and change settings. In addition, the discharge lamp lighting device of the present invention is configured by operating portions of the reference voltage selection device in the order of the reference voltage. In addition, in the discharge lamp lighting device of the present invention, the reference voltage selecting device automatically recognizes the rated value of the discharge lamp installed in the load circuit of the discharge lamp, and automatically selects a reference voltage suitable for the rated value as a A reference voltage output by the reference voltage circuit.

Page 10 538654 V. Inventor (6) Xi ef 1 The discharge lamp lighting device of the present invention is provided with a starting frequency setting device for setting a switching frequency of two dollars in structure, and the basic χ ^ clothing set According to the switching stepper rate set by using the starting frequency setting device, the charm mouth + + Φ Zhengma AW ^ the output from the current circuit to identify the rated value of the discharge lamp installed in the discharge lamp load circuit . < The discharge lamp lighting device of the present invention, the reference voltage selection device, A / I) which converts the digital output of the current detection circuit into digital data, f == memory and the starting frequency setting The memory circuit corresponding to the switching frequency set by the device, the electric current value of the electric current, and the digital data detected by the A / D converter 3 are compared with the electric & values stored in the memory circuit in advance to identify the amount of the discharge lamp. The switch control j of the arithmetic circuit that outputs a control signal after a fixed value, and a switch unit that selects a reference voltage from the reference voltage% road wheel according to the control signal from the arithmetic circuit. ^ ^ Ming Zhi put the lamp lighting device system, set to detect the inverter M, & p # aa Zhenyang Detective clothing, the reference voltage selection device based on the frequency detection from the frequency t ＋ + Γ The output switching frequency identifies the rated value of the discharge lamp installed in the load circuit of the discharge lamp. Also, the structure of the discharge lamp point of the present invention is detected based on the frequency: _Outside reference power two f $ Supply discharge output from the current detection circuit 夂 J = switching frequency and self-powered snow discharge 6 Generally, the current value of the load circuit identifies the rated value of the discharge lamp installed in the load circuit of the a lamp. It is located in the structure j j series. The reference voltage selection device is used to detect the reference voltage of the switching frequency of the output signal. It is installed on the side of the discharge lamp load circuit.

Page 11 V. Rating of Discharge Lamp (7). In addition, the discharge device of the present invention includes an A / D that digitally converts the output of the reference voltage selection converter and the digital output of the inverter's electrical split device to the A / D. The memory circuit of the switching frequency of the circuit measured by the converter and the compared switching frequency are used to identify the digital data and the switch γ-made enemy electric lamp's rated value stored in the memory circuit arithmetic circuit in advance. The number of the output control signal is selected from The reference voltage i is two: and the switching part according to the reference voltage from the control circuit of the arithmetic circuit. The 'lightning rake' of the present invention is also a side lighting device system. The discharge lamp lighting device + Youyi rw mountain is selected on the structure and selected from the reference voltage Γκ. The discharge lamp lighting device of the reference electric lamp corresponding to the smallest current value is changed in the reference voltage. The voltage selection device is structurally close to the soil selected at the time of change; the reference voltage of the voltage is sequentially selected as the reference voltage. The discharge lamp lighting device of the present invention is an external setting device for manually setting the base vehicle voltage output from the reference voltage circuit at the reference voltage selection equipment.

In the discharge lamp lighting device of the present invention, a buffer circuit is provided between the reference voltage circuit t and the error amplifier to continuously change the reference input to the error amplifier. Further, in the discharge lamp lighting device of the present invention, the reference voltage circuit is provided with a division resistor having a reference voltage DC power source and a voltage divider for dividing the reference voltage DC power source, and generates a value corresponding to a preset rated value of the discharge lamp. =

Page 12 538654 V. Description of the invention (8) A reference voltage generating unit having the same reference voltage, and the reference voltage selecting device includes a switching unit that selects an output reference voltage from the reference voltage generated by the reference voltage generating unit. . & nt The invention of the discharge lamp lighting device system, the reference voltage circuit star = DC power supply for earth voltage, a division resistance = for dividing the reference voltage DC power supply, and a switch composed of a switch connected in parallel with the division resistance Switch: and the reference voltage selection device is structured to select a bypassed split resistor by selecting a switch in the switch section, and select a reference voltage output from the reference voltage. In addition, the discharge lamp lighting device of the present invention is provided with the reference voltage on a circuit board on which the error amplifier is assembled, and the circuit board on which the reference voltage + voltage circuit and the error amplifier are assembled is stored in a metal case. . Embodiment of the Invention Embodiment 1 and FIG. 1 are circuit diagrams showing the structure of a discharge lamp lighting device according to Embodiment 1 of the present invention. In Figure i, 丨 is obtained by rectifying and smoothing a commercial power supply to obtain DC current = DC power supply, 2 is an inverter circuit composed of switching elements 2a such as MOSFETs, and a meter, and 3 is internally equipped with a switching frequency according to voltage control = Voltage-controlled oscillation circuit (hereinafter referred to as "vc0") and the driver's inverter-phase inverter circuit 2. The inverter capacitor 4 is connected to the output side j of the inverter circuit 2; A discharge lamp load circuit composed of a current-resistant coil 5a, a starting capacitor 5b, and a rose lamp 5c. 6 is composed of a test resistor 7, an integrated circuit 8 (bypass filter) with a resistor 8a and a capacitor, and detects the load on the discharge lamp. Current detection circuit for net current flowing in circuit 5, 9 series

Page 13 538654 V. Description of the invention (9) '~ Error Amplifier' 1 〇a and 10b are resistors / electric valleys used for the integration of the error amplifier 9 and input to the integrator circuit 8 at the inverting input of the decision amplifier 9々 The output voltage is input to the reference voltage from the reference voltage circuit 14 at the non-inverting input terminal. The difference between the two voltages is amplified by the error amplifier 9 and is fed back to the inverter drive circuit 3 as a control signal. In this embodiment, the reference voltage circuit 4 is preset, generated, and discharged by dividing the stabilized reference voltage with the voltage of the DC power source using the division resistors 12a, 12b, 12c, and 13. 5c rated value (such as 32w, 40W, 4 5W) corresponding to the three kinds of reference voltage reference voltage generating unit 15, the three reference voltages generated from the reference voltage generating unit 15 choose the suitable rating of the discharge lamp 5c The reference voltage is input to the switch 20 of the reference voltage selection device 19 of the error amplifier 9 after the reference voltage. The operation of the first embodiment will be described below. In Fig. I, when the inverter driving circuit 3 drives the + inverter circuit 2, the direct current supplied from the direct current power source i is converted into a still-frequency current, which is supplied to the discharge lamp load circuit 5, and the discharge lamp 5c is turned on. On this day, because the coupling capacitor 4 is connected to the discharge lamp load circuit 5, and the switching elements = 2a and 2b are turned on and off, the discharge lamp load circuit 5 flows in the forward direction (directly grasp the power supply 1 switching element 2a-coupling Capacitor 4 — discharge lamp load circuit 5 — primary test resistance 7 — DC power source 丨) and reverse direction (coupling capacitor 4 — switching element 2b — discharge lamp load circuit 5 — coupling capacitor 4). However, at this time, the same AC current as in FIG. 26 flows through the detection resistor 7, and the integration circuit 8 detects the sum of the forward and reverse currents of the AC current (Zheng current), and the corresponding voltage input error Inverting input terminal of the amplifier 9. In addition, if the circuit loss is ignored, the effective component of the AC current (net 538654 V. Current) is consumed by the discharge lamp 5c, which is completely the same as the conventional example-and the switch 20 is used to reference the voltage circuit 1 Reference voltage output of 4+

Set the selected three reference voltages and install the discharge lamp = the corresponding reference voltage and then input (where J = state) the non-inverting input terminal of the error amplifier 9, so the reference voltage and the voltage from the integrating circuit 8 The voltage of the output voltage = =, and using the integration resistor 10a and the capacitor =, No .: Inverter drive circuit 3 feedback, by using inverse two as two: Λ = 2 = output voltage and reference voltage are controlled as equal Phaser:. Lightning / Self-direct current power supply 1 is supplied to the discharge lamp load circuit 5 to be suitable for discharge, high frequency current (net current) of rated value, and maintained at a fixed value. According to the first embodiment, the structure can be controlled according to the reference voltage from the reference Z. The voltage can be recorded in the discharge lamp load circuit in 5 streams. The wrong switch 20 can input the reference voltage from the reference voltage circuit 14. The motor that supplies the discharge lamp load circuit 5 can be kept approximately fixed at ^ ^ By using the switch 20, the same can be used: the electric "two-valued value" and the rated value of the discharge lamp 5c. =, 适用 Γ applies It is suitable to have a variety of management costs such as parts and components during production, which are cheaper. It is possible to use the switch 20 after the electric lamp lighting device. L = electric lamp, no need to replace it, ... electric lamp Ordering 4 clothes has the effect of making purchase or operating costs cheaper. Mouth advance and the rated value of the discharge lamp 5c (such as 32W, 40W,

Page 15 538654 V. Description of the invention (11) " ~ " '~ 45W) The corresponding reference voltage set in the reference voltage generating section 15 needs to be adjusted, and because of the reference voltage selection device 19 Without switching 20, there is a use result of a discharge lamp lighting device whose rating can be easily changed. In addition, due to the multiplication of the switch 20, the reference voltage can be changed repeatedly, which can be used for a long time, and the discharge lamp that is excellent in resource efficiency can be used for a long time.直 之 欵 Embodiment 2 12a 1 2 a FIG. 2 shows an example in which the switch 20 and the points 12b and 12c are connected in parallel in the second embodiment of the present invention. In Figure 2, the 6 series and the split resistor "resistance one, 12, 2b, 12c, and 13 are connected in series. In this embodiment, the switch 20 and the split resistor 1 2a, 1 2b, 1 2c are connected in parallel. , Μ Mo ^ When the switches 20 are turned off, each of the switches will divide the resistors 12a, 12b, and 12ca ^ On the two sides of the output terminal of the reference voltage connected to the difference amplifier 9 = electricity = error: the cut ratio changes, change the reference Voltage. In addition, the same reference numerals as in the figure are omitted and the description is omitted. In addition, Seki is quite the same as in Example 1 and the description is omitted. In this way, if the effect according to this implementation is not the same, The input impedance of the large device Θ obtained by dividing / obtained in the above-mentioned known example i is reported to be large. At life 1, that is, due to the general error of the enemy ’s period, the switch 20 continues to flow through each example. 'Minimum current is maintained at the reference voltage value. In this condition, the long-term stability J needs to be used at the contact = aging of the contact resistance, so in this embodiment 2, because the switch is bright and bright. However, if the self-reference flows through the switch 20 through the reference ^, including the resistance 12a, Wb, and l2c in parallel, the dry power day-time DC power supply 11 flows too badly! Electricity of resistance 538654 V. Description of the invention (12) Because the current required for aging, ^ ^ ^ ^ can be used to keep secrets, you can use a switch that is more convenient than a switch, except for monks ^ Λ ^, one company, one company and seven companies are not only advantageous, but also for the durability of aging, and it has the effect of improving reliability. ^ m 1 FIG. 2 shows an example of the switches of the sub-assembly of the switch 20 arranged between the upstream side of each of the split resistors i2a, i2b, and i2c and the ground, but connected like t ^^, and the resistors 12a, 12b, and 12c are bypassed. Each switch is also available. In this October situation, the hunter can switch between each switch to get a variety of split ratios, with a small number of "knife" resistors to get the effect of a discharge lamp lighting device that can adapt to more rated values. Embodiment 3 Fig. 3 shows an example in which the reference voltage selecting device 19 is formed by using conductive wires (jumpers) 2m in Embodiment 3 of the present invention. In FIG. 3, the 21 series conductive wires (jumpers) are structured by connecting the output terminals of the reference voltage generating section 15 and the error amplifier 9 with the conductive wires (jumpers) 21, and the three kinds of reference generated by the reference voltage generating section are Among the voltages, a reference voltage suitable for the rated value of the installed discharge lamp 50 is selected and input to the error amplifier 9. In addition, the same or corresponding parts as those in FIG. The operation is completely the same as that of the first embodiment, and the description is omitted. 4 (a) and 4 (b) respectively show a cross-sectional view and a plan view of a specific assembled state of the conductive wire (jumper) 21 to the circuit board in the third embodiment. In FIG. 4, 21 is a conductive wire, 22 is a circuit board assembled with conductive wire 21, and 23 " is a working hole drilled in a part of the conductive wire 21 of the assembled circuit board 22, and the working hole 23 is used to construct the circuit board from the circuit board. The back surface of 22 (opposite to the assembly surface) can also be visually checked and cut off by the conductive wire 21. In the third embodiment, the guide

538654 V. Description of the invention (13) The reference voltage circuit composed of the Λ-quasi-π voltage generating section 15 and the equal difference are amplified on the same circuit board 22, and the outer and outer shells 2 and 4 are formed by the same. For example, in addition to the political results obtained in the above embodiment 1, the following effects can be obtained by using Γ as an example 3 ′. That is, as indicated by 2, in the example shown in embodiment 丨, Λ Each of the switches 20 is connected to the stomach, in order to make it ★ 锸: batch of imitation small currents that continue to flow through you for a long period of time, and keep stable movement under long-term service conditions: the expensive switches that are gold-plated at the contacts, etc. However, if == this example 3, because it can be replaced with cheap conductive wires 21, it is advantageous for aging, and it has a high effect on aging. The durability of aging is also reliable, and it is also improved. Because the reference voltage including the conductive wire 21 and so on is chosen to be installed in the assembly of the error amplifier 9 and the voltage is equal to the second effect, the flow rate is so high that it disturbs m thunder, the output of the rabbit is unstable, and i & clothing selection device 19 is installed in another circuit, which has the advantage of countermeasure cost. 'j Λ In addition Because the circuit board 22 is stored in the case 24, the risk of damaging the circuit board 22 after replacing the discharge 5c and the like is reduced, and if the case 24 is formed of metal, it can also be caused by the discharge of the "light discharge lamp" The impact of noise. Also, in this embodiment 3, since the working hole 23 is formed in the portion where the conductive wire 21 is assembled on the circuit board 22, and the component mounting surface of the circuit board 22 is covered with the housing 24, the housing 24 must be removed. Visually confirm the arrangement of the conductive wires 21 and the selection of the reference voltage, and if necessary, use the working holes 2 3 to cut off the conductivity

Page 18 538654 V. Description of the invention (14) Line 21 ′ has the effect that it can be changed to a suitable rating value of the discharge lamp. It is shown in FIG. 4 as an example of confirming the conductive wire 21 by providing a working hole 23 in the circuit board 22, but as shown in FIG. 5, it can also be installed at the assembly position of the housing 24 and the conductive wire 21 Corresponding parts are provided with openings 25. In this case, 'the switch 20 is used in the reference voltage selection device 19, and there is also an effect that the reference voltage selection status can be confirmed under the mounting case 24 or the reference voltage can be changed. In addition, the opening portion 25 may be provided at another position in the structure, and the switch 20 may be operated with a string or the like. Moreover, in the above-mentioned Embodiments 1 to 3, an example in which the switch 20 or the conductive wire (jumper wire) 21 is used for the reference voltage selection device 19 is shown. However, a semiconductor switch or the like may be used. The variable resistors are used to form at least one of the split resistors 123, 12 ^), l2c, and 13 and change the resistance value of the variable resistor, change the basis of the output from the reference voltage circuit 14, and it is suitable if the reference voltage is used. The discharge lamp ^ configuration switch 2 (also includes the case of rotary switches and other reference voltages such as sequence 21, the arrangement of the operating part of the device 19 (open operation =, or the arrangement of jumper 21, etc.), also has a private work # 刀The advantage of the error when the wire 21. With the knowledge of reducing switch 20 or guide 2, if the switch 20 is installed, of course, it can be obtained to improve the noise resistance.

In addition, the same effects as those of the third embodiment can be obtained on the circuit board 22 of the first embodiment and the error amplifier 9 and the like. Embodiment 4 FIG. 6 is a circuit diagram showing a convergence of Embodiment 4 of the present invention. This embodiment 4 is characterized by the structure of the lighting device, and the structure uses the reference voltage 538654. V. Description of the invention (15) The voltage selection device 19 automatically recognizes the amount of the discharge lamp 5c installed in the discharge lamp load circuit 5. After setting the value, the reference voltage output from the reference voltage circuit 4 is automatically set to a voltage corresponding to the rated value.

In Fig. 6, 1 is a DC power source obtained by rectifying and smoothing a commercial power supply, and 2 is an inverter circuit composed of switching elements 2a, 2b such as a MOSFET. 3 is internally provided with a voltage that controls the switching frequency according to the voltage. Oscillation control circuit 3a (hereinafter referred to as "VCO") and driver 3b of inverter circuit 2 is the drive circuit, 4 is a coupling capacitor connected to the output side of inverter circuit 2 and 5 is an anti-current The coil load 5a, the starting capacitor 5b and the discharge lamp 5c constitute an electric lamp load circuit. 6 is composed of a detection resistor 7, an integrating circuit 8 (bypass filter) provided with a resistor 8a and a capacitor 8c, and detects the discharge lamp load circuit. 5 Current detection circuit for flowing net current, 9 series error amplifier, 10a and 10b are resistors and capacitors used for integration in error amplifier 9, and input to the integration circuit at the inverting input terminal of error amplifier 9 The output voltage of 8 is input with the reference voltage from the reference voltage circuit 14 at the non-inverting input terminal. The difference between the two voltages is amplified by the error amplifier 9 and is fed back to the inverter drive circuit 3 as a control signal. In addition, in the fourth embodiment, an inverter driving circuit 3 is connected to a starting frequency setting device 31. The starting frequency setting device 31 is provided with a memory to store the discharge ^ and set a starting frequency of the switching frequency of the inverter circuit 2 r 0% 1 3 a and the control section 3 b controlling the inverter drive circuit 3 like the inverter circuit 2 that drives the inverter circuit 2 with the switching frequency memorized in the ROM 13 a for a fixed period from the beginning. In addition, the reference voltage circuit 14 includes a voltage division of a stabilized reference voltage DC power source 1 by dividing resistors 12a, 12b, 1 2c, and 13.

Page 20 538654 V. Description of the invention (16) The reference voltage generator 15 corresponding to the three reference voltages preset, generated and discharged by the lamp 5c (eg 32w, 40w, 45W). Among the three kinds of reference voltages generated by the generator 15 2, the reference voltage is selected and inputted to the switch unit 20 composed of three switches 20 a, 20 b, and 20 c of the error amplifier 9 and connected to the current detection circuit 6 according to the start. Frequency setting device 3 丨 The set switching frequency at startup and the output from the current detection circuit 6 detect the discharge lamp 5 (:) installed in the discharge lamp load circuit 5 and automatically control the switch section 2 0 The switch control section 32 of each switch. The switch control section ^ and the switch 砉 卩 20 as a whole constitute a reference voltage selection device 1g. In addition, the specific structure of the switch control section 32 is shown in FIG. The A / D converter 32a that digitally converts the output from the current detection circuit 6 and the switching frequency of the memory inverter circuit 2 and the load to the discharge lamp ^ road 5 net / Λ. The relationship of the memory circuit is similar to that from The a / d becomes ϊ: ΤΛ 二: memory circuit 32b The stored electrical and electronic data identification clothing = discharge / discharge lamp of the load circuit 5 is composed of an arithmetic circuit 32c that sends an on / off signal to the switch section 20, and in this embodiment 4, an insider is used. = The microcomputer constitutes the switch control unit 3 2 of the conversion function and the memory. The switch unit 2 is constituted by a semiconductor switch. The following uses the structure diagram of Fig. 6 and the operation of Fig. 7. First, the discharge lamp is turned on. Example 4: Envy box － M31 31 AC 4. After the t is moved, in step S1, the starting frequency is set to 31 and reversed. ② The drive circuit 3 sends out the voltage-controlled oscillation circuit in the phase driver circuit 3. 3 a ^ 31 within the frequency of the memory of the ROM13a vibrating surplus, ^ starting the sheep ° and then set the amplifier to drive the inverter circuit 2, will be straight,. &Amp; 猎 / 此 # 虎 经 驱动 器 3b Liver DC current from DC power supply 1

538654

Page 22 538654 V. Description of the invention (18) Input error amplifier 9 afterwards. However, in step S7, the elapsed time since the start is monitored. When a preset fixed time has elapsed, the process moves to step S8, and the control of the starting frequency setting device 31, which operates at the start, is stopped, and then switched to彳 4 is controlled by the error amplifier 9. Here, a circuit characteristic diagram showing the relationship between the switching frequency and the net current shown in FIG. 8 will be used to describe in detail the method for identifying the rated value of the discharge lamp 5c based on the relationship between the net current and the switching frequency. In addition, in FIG. 8, the horizontal axis represents the switching frequency of the inverter circuit 2, the vertical axis represents the net current value when driven at each frequency, and the straight lines represented by the discharge lamp A and the discharge lamp B each have different rated powers. The characteristic curves of two types of discharge lamps, WLA and WLB (WLA> WLB). As shown in Fig. 6, the circuit composed of the coupling capacitor 4 and the discharge lamp load circuit 5 constitutes a resonance system composed of LRC. By changing the switching frequency, the current flowing inside changes as shown in Fig. 8. In addition, the net current when the discharge lamp of the current rated power WLA> WLB is lit at the same frequency f 1, the net current I DA of the discharge lamp A having a large rated power according to different impedances is the discharge lamp B of the smaller rated power. The net current IDB is large. In this way, the net current value ID obtained by A / D conversion of the signal from the current detection circuit 6 is relatively close to the switching frequency f 1 set by the starting frequency setting device 3 1 by comparison. The current value IDA or IDB of each electric lamp can identify the rated value of the installed discharge lamp 5C. In addition, in FIG. 8, the relationship between the switching frequency and the net current is expressed by a characteristic curve. However, in an actual discharge lamp lighting device, since the switching frequency f 1 at the time of startup is fixed, only the preset switching is stored in the memory circuit 32 b and the switching is set. Net current I DA and I DB corresponding to frequency and rate, as long as this value and self current detection circuit

538654 V. Description of the invention (19) —- ^ " 6 The net current value of the output can be compared. 9 is a characteristic diagram showing the relationship between the reference voltage of the input error amplifier 9 and the power consumption in the discharge lamp load circuit 5. After selecting the reference private voltage suitable for the rated value, control the switching frequency of the inversion to 'Circuit 2 to make the output voltage of the current detection circuit 6 equal to the reference voltage. Is the DC power source supplied to the discharge lamp load circuit 5 suitable for the discharge lamp 5c If the high-frequency current (net current) of the rated value is neglected, a certain amount of power (WLA or WLB) corresponding to the net current is consumed in the discharge lamp 5c, which is exactly the same as the conventional example. θ above, according to the fourth embodiment, the net current supplied to the discharge lamp load circuit 5 is controlled based on the reference voltage input from the reference voltage circuit 14 in structure, and the switch control unit 32 detects the current in the discharge lamp load circuit 5. After the rated value of the discharge lamp 5c is installed, the reference voltage output from the reference voltage circuit 14 is automatically switched in the switch section 20 to supply the discharge lamp load circuit 5 with a net current suitable for the rated value of the installed discharge lamp 5c, using the same The discharge lamp lighting device can obtain a discharge lamp lighting device that can be applied to discharge lamps 5c with various ratings. As a result, it is not necessary to have multiple parts or discharge lamp lighting devices, and management costs such as parts management during production become Cheap effect. In addition, because the reference voltage is automatically changed in accordance with the rated value of the discharge lamp 5c, there is also an advantage that it is not necessary to manually set the rated value by operating a switch when the product is shipped. In addition, when the discharge lamp 5c is installed to change the rated value of the discharge lamp 5c in order to increase the illuminance, etc., the reference voltage is automatically changed in accordance with the rated value of the discharge lamp 5c, and the same discharge lamp can be lit. The device uses discharge lamps with different ratings. It is not necessary to replace or install a discharge lamp lighting device, which can reduce the purchase cost or the operation cost. In addition, the benchmark can be changed at any time.

Page 24 538654

Lighting equipment ί :: 3 Discharge lamp benchmark with excellent resource efficiency that can be used for a long time ΐ 1 Selection: ί = ί:: Switching reference power composed of control unit 32 and switch unit 20; after 5C rated value of electric lamp 'Automatic thunder, the net current of the rated value of each discharge lamp 5c, without t /: ii can always make the net current suitable for the rated value of the discharge lamp 5c: false #, put: f5c Time, there can be prevented due to the choice of discharge lamp 5c i 22. If the setting is incorrect, an excessive current flows in the discharge lamp 5c, and the effect of shortening the life of the suitable lamp 5 (3) is caused.

— Because of the structure, the inverter circuit 2 is driven by the switching frequency f 丨 set by the starting frequency setting device 31 at the time of starting, and the switch control unit 32 based on the data of the net current from the current detection circuit 6 at this time Detect negative in discharge lamp. The rated value of the discharge lamp 5c of the circuit 5 can prevent the discharge lamp from being recognized by a suitable switching frequency fl at the time of start-up. Before the rated value, a discharge lamp was caused by a current exceeding the rated value. The effect of shortening life.

^, Because the reference voltage circuit 14 is provided with a reference voltage DC power supply n and = j, and the resistance is 1 2 a, 1 2 b, 1 2 C, and 1 3 and generates a plurality of different corresponding to the preset value of the discharge lamp head The reference voltage generating section 15 of the reference voltage and the switching section 20 of the reference voltage generating section 15 which automatically selects the reference voltage generated by the reference voltage generating section 15 are used. Compared with the method of changing the voltage division ratio, the circuit structure is simple, the effect of obtaining an inexpensive reference voltage circuit, and the effect of easily setting the reference voltage. Because of its structure, A / D converter 3 2 a, memory circuit 3 2 b, and

Page 538 654

The operation detection compares the quasi-electric memory with a fan-opening device = a switch control unit 32, uses the A / D converter 32a to convert the current digits μ to the digital digits, and in the arithmetic circuit 3 2 c, w The current data stored in the memory circuit 32b in advance is higher than the rated value of the 5C electric lamp, which controls the switching unit 20 to the base voltage, and the reference voltage corresponding to the rated value is changed. The information in 32b can be adapted to a variety of discharge lamps, and there are available switches that can be used to configure the switch control unit 3 2. The semiconductor switch structure can be used to connect the circuit 20 'to integrate the circuit of the reference voltage selection device 19, It can be miniaturized.

"External" in this embodiment 4 shows the structure and the steps at the time of starting. "It is initially driven at the switching frequency set by the starting frequency setting device 31. During this period, an example of selecting a reference voltage is used, but the structure can also be used. For example, after using the reference voltage circuit 14 and the error amplifier 9 to light up once with the reference voltage corresponding to the minimum net current, it is driven at the switching frequency set by the starting frequency setting device 3 丨, and then switches after recognizing the reference voltage.

Also, in the above-mentioned embodiment 4, the method of obtaining the net current value is an example in which the signal output from the current detection circuit 6 to the error amplifier 9 is branched and input to the switch control section 32, but the structure can be combined with The current detection circuit 6 is provided with a current detection circuit, and is input to the switch control unit 32. In the fourth embodiment, an example is shown in which the inverter-driven circuit 3 is constituted by the voltage-controlled oscillation circuit 3a and the driver 3b. However, the current-controlled oscillation exhaustion circuit may be used instead of the voltage-controlled oscillation circuit 3a. °

P.26 538654 Description of the invention (22) An example in which the reference voltage selection device 19 is constituted by a microcomputer to control the neighbor 32 and a semiconductor switch is used to constitute the switch unit 20 is shown. The contacts of 20a, 20b, and 20c are based on the circuit configuration of the current detection circuit 6. Analogy processing is also possible, and, as shown above, 1 = the use of a variable resistor on the division resistor to change the voltage The division ratio is also available. In the fourth embodiment, the A / D converter 323 is used to detect the net current supplied to the load of the discharge lamp, and the net current of 5 is monitored and judged by the arithmetic circuit 32c. The timing built in the microcomputer 32 can be used to detect the net current after waiting for a fixed time. In addition, instead of presetting the time to control the frequency setting device 3 from the 1 to the error amplifier 9, it is ff created on After the reference voltage is selected, the switch control unit 32 sends a wound number to the starting frequency setting device 3 1 and the control stops at the starting frequency setting device 3 丨 In this case, it also cooperates with the structure by monitoring the net current The value judgment is stable because you do not need to have a margin in the waiting time, and it has the effect that it can be performed quickly from the start of the start to the selection of the reference voltage. Embodiment 5 FIG. 10 is a circuit diagram showing the construction of a discharge lamp lighting device according to Embodiment 5 of the present invention. In the fifth embodiment, the inverter drive circuit 3 is composed of a current control oscillation circuit 3c (denoted as CC 0 in the figure) and a driver 3 b according to the current control oscillation frequency. In addition, it is used to set a discharge lamp. On the starting frequency setting device 31 of the switching frequency when the lighting device is started, a frequency setting resistor 34 is connected between the inversion driving circuit 3 and the ground, and between the inverter driving circuit 3 and the error amplifier 9 Connect the diodes 3 to 5. In addition,

Page 27 538654

In FIG. 6, the same or equivalent parts are assigned the same reference numerals, and descriptions thereof are omitted. In the case of # * 2 q, use the structure of Figure 10 and the flowchart of Figure 11 to explain the implementation of the difference between the voltage-controlled oscillation a and the current-controlled oscillation circuit 3c and the operation of the frequency setting resistor 34 and the diode 35. Example 5 action. In FIG. 10, the electric oscillation circuit 3c is a circuit that controls the frequency of the post-oscillation frequency based on the value of the current flowing from an internal power source (not shown) built in the current-controlled oscillation circuit ==. In this example, the oscillation frequency of the oscillation circuit 3c is controlled based on the total current of the current flowing from the internal power source to the ground through the frequency setting resistor and the current drawn into the error amplifier 9 from the diode 35.

First, before step s 11 of FIG. 11, before the discharge lamp lighting device is started, the switch corresponding to the highest reference voltage among the switches 20 a L 2 b and 20 c of the switch unit 20 is switched by the switch control unit 32. 20c is set to ON, and other switches 20a and 20b are set to OFF. This is to prevent the current from using the diode 35 from the current-controlled oscillation circuit 3χ side to amplify the error to the 9 side by setting the potential on the output side of the error amplifier 9 higher than the potential on the upstream side of the frequency setting resistor 34. As a result, the switching frequency is maintained at a fixed frequency set by the frequency setting resistor 34 by keeping the current flowing from the electric k control oscillator circuit 3 c fixed during the fixed time period after the start.

Secondly, in step S12, after starting the discharge lamp lighting device in the above-mentioned state, the current control oscillation circuit 3c oscillates at a fixed frequency corresponding to the current flowing to the ground wire via the frequency setting resistor 34, and the signal T is amplified by the driver 3b. Then, by driving the inverter circuit 2, the DC current supplied from the DC power supply 1 is converted into a high-frequency current, which is supplied to the discharge lamp load circuit 5 to light up the discharge lamp.

Page 28 538654 V. Description of the invention (24) --- "" When the electric discharge lamp load circuit 5 is used, as shown in Fig. 26-the intersection of samples and ^, the person uses the product knife circuit 8 to detect the ton of AC current心 # 哭 # m ^ 电 " L, supply the discharge lamp load circuit 5 < electricity / > ML corresponding to the k 5 tiger input Bailan said σ 'Recognize the two inverting input terminals of the two P1 amplified states 9 at the same time沭 The two entry levels 1 are selected in the switch control unit 32 in 19.

In addition, as shown above, if the frequency selected by I 3 4 is appropriately selected in advance, the cut-off frequency "4 Red F and

L + — Α + The reference voltage for early and start-up timekeeping can also be used in steady state. R = Electricity & Self-control oscillation circuit 3c flows to the side of the error amplifier. The fixed edge rate should be applied to g + er | and 34. Seven or half-knife change to the inverting state circuit 2 to supply the discharge lamp load port / person /. The net current corresponding to the switching frequency set by the resistor 34. In this way, in the switch control unit 32, in step si3, the a / d conversion signal = the net current signal sent by the free current detection circuit 6 measures the net current (in the case of ± 2, 22). In step S14, it is determined whether the current signal is Stable, after becoming stable =, in step 315, by comparing the current data in the arithmetic circuit 32c with the net current data stored in the jisisi circuit 32b, the amount of the old electric lamp 5c installed in the discharge lamp load circuit 5 is identified. Then, depending on the result, step S16 and step S17, the unit 20 selects a reference voltage suitable for the rated value of the installed discharge lamp 5c, and the potential on the 9 side of the block difference amplifier of the body 35 becomes lower. , The current is pulled from the inverter drive circuit 3 side into the error amplifier 9 side, and then, after step 518, the current flowing through the f-frequency setting resistor 34 and the current drawn into the error amplifier 9 = current control inverter drive The current in the circuit 3 controls the oscillation circuit core to adjust the net current supplied to the discharge lamp load circuit 5.

538654 V. Description of the invention (25) Applying a voltage-controlled oscillation circuit instead of this one can also obtain exactly the same effect as shown above. If this embodiment 5 is used, the same effect as that of the above embodiment 4 can be obtained, and it is in use. The frequency setting resistor 34 is set on the starting frequency setting device 3 丨 which sets the switching frequency when the discharge lamp lighting device is started. Because the simple circuit of the frequency setting resistor 34 and the diode 35 can be used to set the switching frequency at startup No other control circuit for controlling the inverter drive circuit 3 of the fourth embodiment is needed, which has the effect of reducing costs. In addition, it is known from the above description that the current control oscillation circuit 3 c of the fifth embodiment is effective. Embodiment 6 Fig. 12 shows a circuit diagram of a discharge lamp lighting device according to Embodiment 6 of the present invention. The driving of the discharge lamp lighting device shown in Example 4 is, for example, Hf fluorescent discharge lamp (model FHF32EX) manufactured by Mitsubishi Electric OSRAM Co., Ltd., which has multiple ratings for the same discharge lamp (32W and 45W in the case of FHF32EX). In the case of discharge lamps with two kinds of rated power), there are only one characteristic curve indicating the output ID of the net current from the current detection circuit 6 relative to the switching frequency f 丨 due to the multiple rated values. Only the switch control section There is a problem that the discharge lamp cannot be operated at 32W or at 45W. The present invention was conceived to solve this problem. The structure and operation of the sixth embodiment will be described below with reference to FIG. 12. In Figure 1 2 '36 is used to manually set a private number r 说% from the outside — to make the slave to set the outside of the discharge lamp 5 c of the switch control unit 32 and set Mrs. Mengjin outside. Each | mouth is placed in the Benbei example, using the "Automatic mode", "32W mode", "1, J switch 0 ^ p 气 μ 嫂 #. 4 from 4 W mode" Externally set annihilation composition, and the same or equivalent parts as in Figure 6 are assigned the same sign

Page 30 538654 V. Description of the invention (26), omission of the following description After the lighting device, the frequency-driven reverse lamp 5c is driven. In addition, the control unit 32, "Base of the discharge rating installed in the automatic mode" "32W mode_ Off section 20 switches the discharge lamp 5c. In this way, the discharge lamp with a fixed external value is also used. In addition, the external setting is measured. The “state-of-the-art” method can be performed on the electric lamp. There are a variety of actions that can be used to confirm the example β of the Ming Dynasty. In Fig. 12, when starting the discharge lamp "first", the switching phaser circuit 2 set by the starting frequency setting device 31 is turned on and discharged with electric power corresponding to the frequency, and a fixed period of time when operating at the switching frequency When the setting state of the external setting switch 36 is turned on and the least knife is detected, the rated value of the lamp is automatically recognized according to the same steps as in Example 4 when it is set to "h condition", and after a fixed time, it is switched to the appropriate value. Quasi-voltage. In addition, in the case of the setting system of the external setting switch 36 or | 45W mode ", it will not be automatically recognized, but will be turned on in accordance with the rated value set by the external setting switch 36, w D 1 ,, j D π 『You can continue to implement the fourth example, because the switch control section 3 2 is added with a manual setting of 36 '#, which can also be used to adapt to the effect of a variety of discharge lamp lighting devices. ΐ = Embodiment 6 shows that, in terms of structure, first 4 J sets the condition, and the switch control unit 32 is based on Π; automatic mode "," ㈣ mode "," purchase example ', but it is known to have a variety of rated rates and For the characteristic curve of the net current, the relationship is judged after the discharge lamp is constructed with the rated value: the setting status of the setting switch 36 is 7 ^, man, in this case, for 538654 V. Description of the invention (27) The discharge lamp other than the fixed value is the same as that in Example 4 to the above. The automatic recognition of the image is as described above. In addition to the above, it indicates that the mode is set on the external setting switch 36. It also has "32W mode" and "45W mode" in addition to " + Auto example, but as long as the external setting switch 36 is connected, the two modes can be adapted to more than three rated values. "Of course, you can also use the seventh embodiment. Figure 13 shows the discharge lamp quasi-electricity of the discharge lamp 5c, which can be accompanied by the continuous change of the brightness of the discharge lamp 5c. In Figure 13, 37a , 37b, and 38 are buffers; two: of :: capacitors and resistors, buffering resistors 37a and buffering capacitors 3 = = ^ constitute a buffering integration circuit 37. In addition, it is the same as that of Figure 6 Symbols and descriptions are omitted. J: ¾ Qitian Zhiqiu Furnace j this / ~ Example 7 'Select the reference switch of the switch section 20 open ^ = In the state from 20a to 0 to 20b is ⑽ In the case of the state, the amount of Λ 化 r of ϊ9 is integrated by the buffer integration circuit 37, and the input error is amplified: Λ The integration constant of the buffer integration circuit 37 is continuously changed ^ The selected integration constant can make the reference voltage The change of the waste is gradually received by 4 daggers, which can make the light output change smoothly. To ΐ Ϊ: Bingruo 5 according to this embodiment 7 'in addition to the A m obtained in the above embodiment 4' also because of structural errors. Between the input terminal of the amplifier 9 and the circuit 3/7/4, a buffering integration circuit of the buffer circuit 37 is provided. Electrical; phase signal "for accompanying the reference voltage circuit" of the error amplifier 9 and the input of decision becomes gradually and continuously

538654 V. Description of the invention (28) The 'can suppress the intense of the discharge lamp 5 (: light wheel out (brightness) that occurs when the switching frequency at the time of self-starting is automatically switched to a reference voltage suitable for the rated value of the discharge lamp 5c, etc.] The stepwise change can smooth the light output from the start to the steady state, and has the effect of obtaining a discharge lamp lighting device that can reduce the strange feeling or uncomfortable feeling of the user and is excellent in comfort. < In addition, the discharge lamp lighting device of the reference voltage is automatically selected by switching the switch unit 20 after recognizing the rated value of the discharge lamp 5c at each start, and the brightness of the discharge lamp 5c changes each time the device is started. Each sharp change in brightness will greatly impair the comfort of the user, and the discharge lamp lighting device of the above-mentioned embodiment 7 which can make the light output change smoothly has a great practical advantage.

In addition, for example, when the switching frequency at the time of self-starting is switched to the 45W rated ', it is not directly switched to the 45W rated reference voltage, but the switching control unit 3 2 is set to 3 2 W — 4 0 W — 4 5 W When the sequence is switched step by step, the effect of the buffer integration circuit 37 is also matched, and the light output changes more continuously, which has the effect of obtaining a more comfortable discharge lamp lighting device. Also, in the above-mentioned Embodiment 7, the buffer circuit 37 of the input error amplifier 9 is used as an example in which the buffer integration circuit 37 is composed of a buffer resistor 37a and a buffer capacitor 37b. However, for example, a product knife circuit of an operational amplifier is used Other structures having the same function as that of the structure may be used. Embodiment 8 Fig. 14 shows a circuit configuration of a discharge lamp lighting device according to Embodiment 8 of the present invention. Examples 4 to 7 so far indicate that the structure “arranges the switching section 20 between the reference voltage generating section 15 and the error amplifier 9” from the reference voltage generating section 15 using the switching section 20. As much as possible

538654 V. Description of the invention (29) An example of selecting the reference voltage of the input error amplifier 9 among the quasi-voltages, but as shown in the eighth embodiment of FIG. 14, each switch 20a, After 20b, 20c and each of the split resistors 12a, 12b, and 12c are connected in parallel, by turning on and off each switch of the switch section 20, the split resistor 2a, the outer 12b, and 12c are bypassed, and the reference voltage output connected to the error amplifier 9 is output. The division ratio on both sides of the terminal's resistance changes, and the reference voltage is changed. In addition, in FIG. 14, the 16 series and the division resistors 12a, 12b, 12c, and 13 are connected in series, and the same or equivalent parts as those in FIG. 6 are assigned the same reference numerals, and the description is omitted. The operation is completely the same as that of the fourth embodiment, and the description is omitted. ,

In this way, according to the eighth embodiment, the following effects can be obtained in addition to the effects described in the fourth embodiment. That is, because the input impedance of the general error square = 9 is very large, in the example shown in the embodiment 4, a small current ^ trap $ continues to flow through the contacts of the switch 20, under this condition, it is necessary to stabilize the Hetian and reference voltage values for a long time. It was quite difficult. However, according to the eighth embodiment, the T switch 20 is connected in parallel with the division resistors 12a, 12b, and 12c, and the current flowing through the division resistor flows in the DC power supply 1 for the reference voltage at the switch, because g = in order to maintain stability against aging. The required current value has the effect of obtaining a durable and reliable discharge lamp lighting device for ^. _ In addition, FIG. 14 shows an example of each switch 2 0 & 20 b, c provided with a switch 20 in parallel between the $ side and the ground above each of the division resistors 12 a, 12 b, and 12 c. It is also possible to connect the split resistors ^^ k J to each switch. In this case, by switching each switch, you can get a thinning knife-brake ratio and a small number of split resistors to obtain a value that can be adapted to more ratings.

Page 34 Fig. 1 5 shows the discharge lamp lighting device 538654 which is the ninth embodiment of the present invention. V. Description of the invention (30) The effect of the discharge lamp lighting device. Example 9 Circuit diagram of the structure. In Figure 15, 1 is a DC power supply that rectifies and smoothes a commercial power supply to obtain a DC current, 2 is an inverter circuit composed of switching elements 2a and 2b such as < 2b, and 3 is internally provided with a reference voltage Inverter drive circuit for voltage-controlled oscillation circuit 3a (hereinafter referred to as "VC0") for controlling switching frequency and inverter 3 for inverter circuit 2 of driver 3b, 4 series and coupling capacitors connected to the output side of inverter circuit 2, 5 series A discharge lamp load circuit composed of a current-resistant coil 5a, a start-up electric command of 5b, and a discharge lamp 5c, 6 is composed of a detection resistor 7, an integrating circuit 8 (: bypass filter) provided with a resistor 8a, and a capacitor 8 (: The current detection circuit '9 which detects the net current flowing in the discharge lamp load circuit 5 is an error amplifier, 10a and 10b are integrated in the error amplifier 9 and the capacitor, and are in the opposite phase of the error amplifier 9 The input terminal inputs the output voltage of the output circuit 8 from the reference voltage circuit at the non-inverting input terminal. ^ The reference voltage is input. The difference between the two voltages is amplified by the error amplifier 9, and the control signals are: Inverter drive circuit 3 feedback. In the ninth embodiment, the inverter drive circuit 3 is provided with an external output terminal 41a that switches the oscillation frequency of the vibration control circuit 3a, that is, the inverter drive circuit 3, together with the connection line 41b to form a reference, "The switch control section 32 in the road 14 inputs data about the switching frequency, and the frequency detection device 41.,,

In addition, the reference voltage circuit 14 is divided by the division resistances 12a, 12b: L, and the reference voltage is divided by the DC power supply 1 1 and 1 2 C.

Page 35 538654 V. Description of the invention (31) Set, generate and discharge the reference voltage generating unit 15 of the two rated voltages of the discharge lamp 5c (for example, 32W, 40W, 45W). 15 Among the three kinds of generated reference voltages, a reference voltage selection device 1 9 is input to the error amplifier 9 after selecting a reference voltage suitable for the rated value of the installed discharge lamp 5c. The reference voltage selection device 9 is composed of three switches 2. Switching unit 2 composed of a, 2 0 b, 2 0 c and the switching frequency identification of inverter drive circuit 3 inputted from frequency wheel output terminal 4 1 a by using connecting wire 4 1 b is installed in discharge lamp load circuit 5 After the rated value of the discharge lamp 5c, the switch control section 32 of each switch of the switch section 20 is automatically controlled. In addition, the specific structure of the switch control section 3 2 is shown in Figure 5: Soda ... ,, X ^ / /, Oda A / d converter 3 2a for digitally converting the output from the frequency output terminal 4 1 a / Remember the reference voltage output from the reference voltage circuit 4 and the inverter driving circuit 3, the memory circuit 32b of the relationship between the switching frequency, and the output from the A / D converter 32a and the memory circuit 32b. The frequency data identifies the rated value of the discharge lamp 5c installed in the discharge lamp load circuit 5, and the arithmetic circuit 3 2c sends an on / off signal to the switch section 20. In this embodiment, U, A / D are built in. The microcomputer constitutes the switch function of the conversion function and the memory. The switch control unit 3 2 ′ constitutes the switch unit 2 with a semiconductor switch. The following describes the embodiment using the structure diagram of FIG. 15 and the flowchart of FIG. 16. Baixian, at the start of the discharge lamp lighting device, in step Sj 1 of FIG. 16, the switch control section 32 sets the switch 20a corresponding to the reference voltage that supplies the minimum level current among the switches of the switch section 20 20b and 20c are set to OFF. Here the makeup can be deducted #currency collection bamboo switches, after the discharge lamp lighting device is started in this state, due to the difference amplifier 9 input from the reference voltage circuit 14 and the minimum net current pair 538654 V. Description of the invention ( 32) According to the reference voltage, the error amplifier 9 will be summed up ^ At this time, because the switching of the components 2a and 2b in the discharge lamp load circuit 5 is linked, the capacitor 4 is closed lightly, and the flow direction is DC power supply 1-Switching element 2a ~ Xindeng load circuit 5 Amplify the difference between the current signals and input it to the inverter drive circuit 3. The voltage-controlled oscillation circuit 3a within the current measuring circuit 6 is driven in anti-phase corresponding to the voltage. The circuit 3 drives the inverter circuit 2 via the driver 3 b, and switches the switching frequency, converts the DC current into a high-frequency current, and supplies it to the DC power supply 1 and supplies the lamp 5c to light up. Electric foot load circuit 5, effective power < load circuit 5-detection resistor 7-DC power source ^ ^ capacitor 4-cut the lamp flow to the coupling capacitor 4 switching element 仏 right-handed AC current and left-handed AC current At the end, the lamp load circuit 5 ~ 26 is the same AC current, and the integral detection resistor 7 flows through the sum of the graph and the reverse current (the net current is measured by the inverting input terminal of the AC current forward 9). The voltage of the error amplifier is input to the error amplifier. Because the reference voltage is input into the error circuit 14 of the error amplifier 9, the difference between the output of the reference voltage electrical circuit 8 and the reference voltage at the discharge lamp ^ inversion ^ input terminal is set after starting. By the feedback from the integrating circuit 3, until the discharge lamp m amplifier 9 is supplied to the value set by the inverter drive voltage circuit 14 ^ the net current of the load circuit 5 is equal to the reference rate, and the result, and the custom, the inverter The electric power corresponding to the net current of the switching frequency of circuit 2. In the same way, the consumption of the discharge lamp 5C is the same as the minimum, after starting

-Run the discharge lamp lighting device early in the day and at the time of supply ^… — Step S2 2 at a fixed time to match the current with a certain Φ

538654 V. Description of the invention (33) '' ---- When the net current to the discharge lamp load circuit 5 becomes a fixed current value corresponding to the reference voltage, move to step S23, and the a / d conversion in the switch control section 32 The device 32a detects the switching frequency (fD) output from the frequency output terminal 41 & then, in step S24, by the arithmetic circuit ... the data and the switching frequency and net shown in FIG. 8 stored in the memory circuit ㈣ The data comparison of the relationship of the currents identifies the rated value of the "discharge lamp" installed in the discharge lamp load circuit 5. Then, according to the recognition result, in step s 2 5 or step s 2 6, use the calculation = road 32c from the reference After selecting a reference voltage suitable for the rated value of the installed discharge lamp 5c among the three kinds of reference voltages generated by the voltage generating section 15, using ON, the section 20 will automatically switch from the initially set switch 20a, and the error will be reduced in the future = 9 The inverter drive circuit 3 is controlled based on the new reference voltage and supplies the net current of the discharge lamp load circuit 5 suitable for the rated value of the discharge lamp 5c. Π j Here, the reference voltage and Relationship between switching frequency The above-mentioned relationship between the reference voltage and the switching frequency is the method of the rated value of the discharge lamp 5c set by j. In addition, in FIG. 17, the horizontal cry = the reference voltage output from the reference voltage circuit 14, and the vertical axis represents the reverse phase i The switching frequency of the respective circuit 3 is represented by the discharge lamp A and the discharge lamp B. The characteristics of the two types of discharge cores with different rated powers WLA and WLB (ffLA > WLB) are shown in the straight and Rayong systems. The following description shows that the laughter 1 shows the white discharge lamp lighting device. Because the error voltage Hi is the same as the reference voltage output from the reference voltage circuit 14 from the integral amplifier, the switching frequency of the inverter drive circuit 3 is controlled. After deciding the reference voltage output from the reference level i, in the steady state, the only decision is the switching frequency of the contention current and the net current that can be supplied. According to this

538654 V. Description of the invention (34) Similarly, for the same discharge lamp, if the reference voltage is changed, the switching frequency will change accordingly, and the characteristic curve shown in Figure 17 can be obtained. Because of the electricity, the resonance capacitor system composed of LRC is composed of the coupling capacitor 4 and the discharge lamp load circuit 5. In the case of installation of circuits with different rated values, the same supply is caused due to the different impedance of the discharge lamp 5c ~ (That is, the reference voltage) changes in the switching frequency, each has a different = curve. For example, in the example shown in FIG. 17, the discharge lamp a and the discharge lamp b of the rated electric power WLA > WLB are driven with the same reference voltage. The switching frequency iDA of the discharge lamp A having a large rated power is smaller than the rated power = discharge ^ The switching frequency f of B is large. In this way, after keeping the reference voltage at a fixed reference voltage for the “流”: flow, the frequency detection device 4 will be rotated after the “No. A / D conversion”. The switching frequency is detected, and the installed discharge lamp can be identified by comparing the frequency fDA · or the switching frequency fDB of each discharge lamp corresponding to the reference voltage (VREF). In addition, in Figure 17, the relationship between the reference voltage and the switching frequency is expressed by a characteristic curve. However, in the actual discharge lamp lighting device, the voltage (VREF) is fixed. In the memory circuit 321}, only The storage and fixed frequency of the earth is very small. As long as this value is compared with the switching frequency from the output frequency = clothing, the rated value can be identified. Here, you do n’t need the reference standard. Voltage device. Production # shows the characteristic diagram of the relationship between the reference power input of the input error amplifier 9 and the power being discharged. Choose a suitable rating, change the rate of two = new !! f amplifier 9 and inverter drive circuit 3 will cut, dry and make a new self-contained reference voltage and current detection circuit 6 output

538654 V. Description of the invention (35) The voltage phase f 'is supplied from the DC power supply 1 to the discharge lamp load circuit 5 and is suitable for the high-frequency current (net current) of the rated value of the discharge lamp μ. If the circuit loss is ignored, the discharge lamp 5C consumes and This net current corresponds to a certain amount of power (in the example of FIG. 17, it is WLA). Above, 'if according to this embodiment 9, because the net power supplied to the discharge lamp load circuit 5 is controlled based on the reference voltage from the reference voltage f circuit 14 rounds in the structure' direction, and by using the frequency detection device 4 Measure the switching frequency r D of the inverter circuit 2 when operating at a predetermined reference voltage, that is, when a predetermined net current is supplied. Use the switch control unit 3 2 to identify the rating of the discharge lamp 5 c installed in the discharge lamp load circuit 5 After the value is reached, the switch unit 2 will automatically switch the reference voltage output from the reference voltage circuit 14 to the discharge lamp load circuit 5 suitable for the installed net current of the discharge # lamp 5 c, using the same discharge lamp lighting device A discharge lamp lighting device applicable to discharge lamps having various rated values can be obtained. As a result, it is not necessary to have a variety of parts or discharge lamp lighting devices, and there is an effect that management costs such as parts management during production become cheaper. In addition, because the reference voltage is automatically changed in accordance with the rated value of the discharge lamp, there is also an advantage that it is not necessary to manually set the rated value by operating a switch when the product is shipped. In addition, after the discharge lamp lighting device is installed, in order to improve the illuminance, etc. In the case of changing the rated value of the lamp 5c, the reference voltage is automatically adjusted to match the rated value of the discharge lamp 5c. You can use discharge lamps with different ratings in the same discharge lamp lighting device, without having to replace and set The discharge lamp lighting device has the effect of reducing the purchase cost or replacing the operating cost of the discharge lamp lighting device, and can obtain a long-term use of the discharge lamp lighting device which is excellent in resource efficiency.

Page 40 538654 ________ V. Description of the invention (36) a 'In addition, because the reference voltage selection device 19 composed of the switch control section 32 and the switch section 20 is structurally determined after determining the rated value of the installed discharge lamp 50, Automatically switch the reference voltage 'supply a net current suitable for the rated value of the discharge lamp 5 c, do not know electrical knowledge, and can also make the net current suitable for the rated value of the discharge lamp 5 c flow' when replacing the discharge lamp 5 c, etc. This has the effect of preventing excessive current from being applied to the discharge lamp 5c due to the wrong selection of the discharge lamp 5c < In addition, the reference voltage circuit 14 is provided with a DC power supply n for reference voltage and a reporting resistor 1 2 a, 1 2 b, 1 2 c, and 1 3, and generates a plurality of different types corresponding to the rated value of a preset discharge lamp. The reference voltage generating unit for the reference voltage and the reference voltage selecting device 19 for automatically selecting the reference voltage generated by the reference voltage generating unit 15 are composed of a simple circuit structure, which has the effect of obtaining a low-cost reference hail pack circuit, and For example, by using a variable resistor or the like to constitute the division resistor 12 and then changing the resistance value of the variable resistor and changing the voltage division ratio, it is easier to set the reference voltage. In addition, since the A / D converter 32a, the memory circuit 32t), and the arithmetic circuit 32__ constitute the switch control unit 32, the A / D converter 32a digitalizes the output of the current detection circuit ^^, and the arithmetic circuit 32c. By comparing the digital binary data with the frequency data stored in the memory circuit 32b in advance, the rated value of the lamp 5c is identified, and the switching unit 20 is controlled to be detected from the reference voltage circuit 2 1 4 and ~ The reference voltage corresponding to the rated value can be adapted to a variety of discharge lamps simply by changing the information in the memory circuit 32b, and it is effective to obtain a wide range of flexible discharge lamp lighting devices. It ’s because the microcomputer is used to configure the switch control unit. 3 2. The semiconductor switch structure is used.

P.41 538654 V. Description of the invention (37) The switch unit 20 can be integrated into the circuit of the reference voltage selection device 19, which has the effect that the device can be miniaturized. In addition, in the ninth embodiment, the reference voltage corresponding to the minimum net current is set as the reference voltage when the discharge lamp lighting device is started. This prevents the discharge lamp from flowing through with a small rated value. The effect of shortening the life of the discharge lamp 5 c caused by excessive current. In addition, on the frequency detection device, since the frequency switching terminal 41a in the inverter driving circuit 3 is obtained from the frequency switching signal in the structure, it has the effect of obtaining a fast and accurate switching frequency. In addition, in this embodiment 9, an example is shown in which the switching frequency is measured after waiting for a fixed period of time until the net current and switching frequency of the discharge lamp load circuit 5 are stabilized in the structure, but the frequency is used from the start. The debt measuring device 41 and the switch control section 3 2 repeatedly detect the switching frequency. After the switching frequency becomes a fixed value, it is judged that the switching frequency becomes a steady state, and the rated value of the discharge lamp 5c is also acceptable. In this case, it is unnecessary to reserve The margin up to the steady state has the effect that the rating can be changed quickly. In the above, the case where the switching frequency is detected when the switch 2Oa is set to ON is described. However, the switching frequency may be detected when the other switch is set to ON, and the map is stored in the memory circuit 32b. In the case of the characteristic curve shown in FIG. 17, any switch can be set to ON after the start of the structure, and the setting status of the switch section 2 0 can be detected by the arithmetic circuit 3 2 c, which corresponds to the setting simplicity. The reference voltage and switching frequency identify the rated value of the discharge lamp 5c. It also shows an example in which the switch control unit 32 is constituted by a microcomputer and the switch unit 20 is constituted by a semiconductor switch in the reference voltage selection device 9; however, for example,

Page 42 538654 Description of the invention (38) ^ Group ^ Combination of relays that open and close according to different voltages and each switch 20a, 20b, 1 妾 Order meals according to the output voltage opening and closing of the frequency detection device 41 1 The y-channel configuration can be processed by analogy, and as shown above, the voltage division ratio can also be changed by using a variable resistor on the division resistor at κ k. In addition, in FIG. 15 above, the frequency detection If the frequency output terminal 41a of the self-inverting circuit 3 on the measuring device 41 measures a switching frequency configuration example, the current or voltage waveforms flowing to the inverter circuit 2 or the discharge lamp load circuit 5 can also be constructed, for example. The input switch control unit 32 digitally converts the A / D converter 32a in the switch control unit 32 into digital data, performs a Fourier transform on the calculation, and detects a switching frequency. Also in this embodiment 9, an example is shown in which the inverter-driven circuit 3 is constituted by the voltage-controlled oscillation circuit 3a and the driver 3b, but a voltage-controlled oscillation circuit can be replaced with a current control circuit to obtain the same effect as described above. . 7 > Embodiment 10 Fig. 19 shows a circuit diagram of a discharge lamp which is used to damage an embodiment of the present invention. In this embodiment 10, the inverter driving circuit 3 is composed of a current-controlled oscillation circuit 30 (controlled as "# 0" in FIG. 19) and a driver 3b according to the current control oscillation frequency according to the current flow, and A frequency setting resistor 34 is connected between the inverter driving circuit 3 and the ground, and a diode 35 is connected between the inverter driving belt port and the error amplifier 9. In addition, in the reference voltage circuit 14 and the Zhiguan control unit 32, the frequency is switched from the inverter drive circuit 3 / internal via the connection line 4 1 b, and the switching frequency is also input. a child passing

Page 43 538654 V. Description of the invention (39) Wiring 3 9 Input and output corresponding to the net current supplied to the load circuit 5 of the discharge lamp. In addition, the same or equivalent parts in FIG. 19 and FIG. 15 are given the same symbols, and descriptions thereof are omitted. In the following, the difference between the voltage-controlled oscillation circuit 3a and the current-controlled oscillation circuit k and the use of the net current data output from the current detection circuit 6 will be mainly described as follows. In Figure 丨 9, the current-controlled oscillation circuit k is an oscillation circuit that controls the oscillation frequency based on the current value flowing from an internal power supply (not shown) built in the current-controlled oscillation circuit 3c. In this example, The total current of the power source through the frequency setting resistor 34 to the ground and the current drawn from the diode 35 into the error amplifier 9 controls the oscillation frequency of the oscillation circuit 3c. Baixian 'Before starting the discharge lamp lighting device, use the switch control section 3 2 to set the switch 2 Oa corresponding to the minimum net current among the switches 2 0 a, 2 0 b, and 2 0 c of the switch section 20. Turn ON and set the other switches 20b and 20c to OFF. In this state, when the discharge lamp lighting device is operated, the current from the internal power of the current control oscillation circuit 3 c (not shown in the figure) flows to the ground through the frequency setting resistor 34, and because of the output side of the error amplifier 9, The potential is lower than the potential on the upstream side of the frequency setting resistor 34, and the current also flows through the diode 35 to the difference amplifier 9 side. Therefore, the 'current control vibrating circuit 3 c oscillates at a frequency corresponding to the total current flowing from the internal power source to the ground through the frequency setting resistor 34 and the current drawn from the diode 35 into the error amplifier 9 by using a driver 3b drives the inverter circuit 2 after the signal is amplified, converts the DC current supplied from the DC power source 1 into a high-frequency current, supplies it to the discharge lamp load circuit 5, and turns on the discharge lamp 5c.

Page 44 538654

i'Invention (40)

However, when the current flows to the discharge lamp load circuit 5, the same AC current flows to the detection resistor 7 as shown in FIG. 26. After the integration circuit 8 detects the sum of the forward and reverse currents of the AC current (net current), The inverting input terminal of the input error amplifier 9 is amplified by the base amplifier 9 which is input to the non-inverting input terminal, and the output is amplified. The potential on the downstream side of the diode 35 is changed by ± the difference. The amount of current on the side of the amplifier 9 is changed, and the oscillation frequency of the current control oscillation circuit 3c is controlled to switch the frequency until the output from the current detection circuit 6 is equal to the reference voltage, and then moved to a steady state. Therefore, after the reference voltage corresponding to the minimum current is also selected by the switching unit 20 in this embodiment 10, the error amplifier 9 controls the reverse cryogenic drive frequency and adjusts it to the net current supplied to the load circuit 5 of the discharge lamp. The current value corresponding to the reference voltage is in the steady state, and: ::: The reference voltage and the chirp current correspond to the switching frequency only. = J service is stored in the memory circuit 3 2 b in advance as shown in Figure 17 2: The quasi-lightning pressure and switching frequency are related, the dry electricity rate of the Baigutu can be identified by the fouling detection rate detection device 41 Measured by the switching step unit 20 can automatically Ά; 3 fixed value 'use the arithmetic circuit 32. And open the eye to a reference voltage suitable for the rating. As for the dynamic example 10, the following structural benefits are used in the structure. Example 10 is based on the value of Δf. That is, as shown above, the current control circuit of the 3 t diaphragm frequency setting resistor 34 and the error amplifier 9's electrical level control current controls the oscillation circuit core. The reference i inverting circuit 14 is a light current control vibrating surplus circuit 2: frequency: when the resistance value of the set resistor 34 changes, the self-oscillating circuit 3. The value of the current flowing out changes, and the result

Page 45 538654 V. Description of the invention (41) The switching frequency of the inverter drive circuit 3 corresponding to the reference voltage is changed. Therefore, in this embodiment 10, the rating of the discharge lamp 5c is directly identified not based on the relationship between the reference voltage and the switching frequency, but based on the relationship between the net current and the switching frequency as exemplified in FIG. Specifically, after the signal of the switching frequency from the frequency detection device 41 and the signal of the net current from the current detection circuit 6 are input to the switch control section 32, the A / D converter 32a of the switch control section 32 is used. After detecting the switching frequency and net current value, and directly identifying the rated value of the discharge lamp 5 c based on the data of the net current and switching frequency stored in the memory circuit 32b, the arithmetic circuit 3 2 c and the switching part 20 can be automatically used. Switch to a reference voltage suitable for the rating. As shown above, because the steady-state reference voltage and net current have a one-to-one relationship with the switching frequency, it can also be identified based on the relationship between the net current and the switching frequency. The rated value of 5c, especially, is due to the difference between the net current and the switching frequency. The relationship is only determined by the characteristics of 2 channels 2 discharge lamp loads 1 channel 5. If this method is adopted, the frequency setting resistor 34 will not always accurately identify the discharge lamp. Rated value. As shown above, if there is no moving π & ringing, according to this embodiment, the effect of Example 9 is exactly the same, and because of the structure of the net current data and frequency = current The data of the debt measurement rate directly identifies the rated value of the discharge lamp 5c, and the switching frequency of 1 will not affect the change of the frequency setting resistance 34. Right, quasi-voltage, and the rated value of the discharge lamp 5c The effect. In other words, from the above description, it is known that the voltage-controlled vibration exhaust circuit constitutes the actual

538654 V. Description of the invention (42) The current-controlled oscillation circuit 3c of Example 10 can obtain the same effect by identifying the rated value based on the relationship between the net current and the switching frequency. In addition, in this embodiment, the method of obtaining the net current value is shown as an example in which the signal output from the current detection circuit 6 to the error amplifier 9 is branched and then input to the switch control unit 32, but it may also be structured. The current detection circuit 6 is separately provided with a current detection circuit and input to the switch control section 32. In addition, FIG. 19 shows an example of detecting the switching frequency from the frequency output terminal 4 1 a of the inverter driving circuit 3 in the structure, but the net current signal output from the current inertia measuring circuit 6 is not completely smoothed. In the case of including the switching frequency component, after the signal is digitized by the A / D converter 3 2 a, the 闬 arithmetic circuit 3 2c may perform a Fourier transform to detect the switching frequency. In this case, the 婿 and 婿 are not required. The rate output terminal 4 1 a is connected, and the circuit becomes simple. Embodiment 1 1 FIG. 21 shows a circuit diagram of a discharge lamp lighting device of Embodiment 11 of the present invention. When the non-discharge lamp lighting device of Example 9 is used to drive, for example, the Hf fluorescent discharge lamp (model FHF32EX) manufactured by Mitsubishi Electric OSRAM Co., Ltd. has multiple ratings for the same discharge lamp (in the case of FHF32EX, 32W and In the case of a discharge lamp of 4 5 W two types of rated power), there is only one characteristic curve showing the switching frequency Fd relative to the reference voltage VR EF, and only by the switch control. The unit 32 cannot recognize the discharge lamp to operate at 32W. , Or the problem of running at 45W, the present invention was conceived in order to solve this problem. The structure and operation of this embodiment 11 will be described below using FIG. 21. In Fig. 21, 36 is used to manually set the discharge provided in the switch control section 32 from the outside.

Page 47 538654 V. Description of the invention (43) The rated external setting device for lamp 5c, in this embodiment, is constituted by an external setting switch that switches the three modes of "auto mode", "32W mode", and "45W mode". In addition, the same or corresponding parts as those in FIG. 15 are assigned the same symbols, and the description is omitted. The operation of this embodiment 11 will be described below. In FIG. 21, after starting the discharge lamp lighting device, first, a reference voltage corresponding to the minimum net current is output from the reference voltage circuit 14, and the error amplifier 9 sends a control signal to the inverter drive circuit 3 to control the inversion The switching frequency of the generator circuit 2 adjusts the current supplied to the discharge lamp load circuit 5 so that the round output from the current detection circuit 6 is equal to the reference voltage. During the operation according to the reference voltage, the switch control unit 32 first detects the setting status of the external setting switch 36, and when it is set to the "white operation mode", it automatically recognizes the location according to the same procedure as in Example 9. The rated value of the discharge lamp 5c is switched to a reference voltage suitable for the rated value after a fixed time. When the setting of the external setting switch 36 is "r32w mode" or "45W mode", the switch section 20 is not automatically recognized and the discharge lamp is turned on according to the rated value set by the external setting switch 36. k. As such, according to this embodiment 11, in addition to the effects obtained in the above-mentioned embodiment 9, in addition to the external setting device 36 that can manually set the rated value, the switch control unit 32 is also available. It can adapt to the effect of the discharge lamp lighting device of the discharge lamp with multiple rated values in the same discharge lamp. In addition, in the above-mentioned Embodiment 11, it is shown in the structure that after the setting condition of the external setting switch 36 is first detected, the switch control section 32 performs the "automatic mode", "32W mode", "45W mode

P.48 538654 ___ One-fifth, the description of the invention (44) "" Example of the corresponding treatment, but in the case of knowing and the characteristic curve of the lamp's reference voltage and switching frequency, 'in the structure: No 11 ears first from the temple The relationship between the reference voltage and the switching frequency is used to determine whether L has a variety of celebrity values. After the lightning setting, you should check the setting status of the external setting switch 36 z 5 outside the discharge lamp and the above implementation. Example 9—'In the above, it means that the external setting switch 36 has a 32W mode in addition to the "automatic mode" and "45W mode.", ": /: 2 ', but as long as the number of contacts of the external setting switch 36 is increased : = Adapts to more than three rated values. ",,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, S, Embodiment 1 2 FIG. The points are cut as shown in Fig. 2: one by one for buffering;; = using ς for l and electric F, and buffering resistor 373 and buffering capacitor 37b as a whole 8 buffering auditing circuit 37. In addition, the same or equivalent parts as in FIG. 15 are designated by the same reference numerals, and descriptions thereof are omitted. Therefore, in the ice embodiment 12, the opening and closing of the switch unit 20 that selects the reference voltage ^ If the state from 20a is ON to 20b is ⑽, the change amount of the voltage is integrated by the buffer integration circuit 37 , Input error magnification 5. The reference voltage is continuously changed in accordance with the integration constant of the buffer integration circuit 37. Selecting this integration constant to ensure that the reference voltage changes gradually changes and the light output changes smoothly. ·

Page 49 538654 V. Description of the invention (45) As shown above, according to this embodiment 12, in addition to the effect obtained at θ, it is also due to & 11 ρ + " Live two ^ ~ ^ U in the structure between the input of the error amplifier 9 and the reference pen pressure circuit 1 4 This department is checking 1 Thunder change Q 7, a steal A ,, 隹 + ^ buffer of the buffer circuit 37 Integrating the circuit d ', slashing the reference electric current < τ /' lr IT * P HHt @ 屮 夕 @ A ^ accompanying the change of the power of the reference voltage circuit 14 ¾, input the wrong call to the outside w It is definitely a continuous and continuous skinning of the signal amplified to 9, and the mouth Γ suppresses the fierce step S3 of the reference at the time of self-starting, the reference voltage of the rated value of the slide 5c, and the like. The light output of the electric lamp 50 is the second heart mountain. The discharge lamp lighting effect is excellent or comfortable because it can make the comfort from starting to steady state, and it is excellent. Ί: = After identifying the rated value of the discharge lamp 5c at startup: ΐϊ: 2❿ The discharge lamp lighting device that automatically selects the reference voltage, the brightness of the discharge lamp 5c changes each time it is set, because Each sudden change will increase the comfort of the two, which can make the light output change smoothly. The above-mentioned attack lamp lighting device has a practically great advantage. 昉. In addition, for example, during self-starting The switching frequency is switched to 4 5 f rated, instead of directly switching to 45 ¥ rated reference E-ink, but to make the switch-making part 32 cut in sections in the order of 32W-40W-45W

Haji points J = the effect of using the integrating circuit 37, the light output changes more continuously, and it has the effect of α pieces to a more comfortable discharge lamp lighting device. Slowly ^ 'In the above-mentioned embodiment 12' shows an example of using a buffer resistor 3 7 a and a buffer capacitor 3 7b and an interrogation integration circuit 37 in the input error amplifier 9's two lines 37. However, for example, using the operation to enlarge the crying integral H, etc., and other structures with equivalent functions are also acceptable.

538654 V. Description of the invention (46) I ^ ----- Example 1 3 ^ Figure 23 is a circuit structure diagram of the discharge lamp lighting device of Example 1 3. The embodiments 9 to 12 so far show that the switch unit 20 is arranged in the reference voltage generating circuit and the H of the error amplifier 9 in terms of structure. Examples of various references < Γ *, ^ The reference voltage of the turn-in error amplifier 9 is shown in the example, but it is shown in the 13th embodiment of the second embodiment. 'It is also possible to structure each of the switch sections 20, 20b, and 20c. After being connected in parallel with each of the split resistors 12a, 12b, and 12c, each switch of the & on / off switch unit 20 connects the split resistors & 12b, eight c, Metrohm 'and the reference voltage of the error amplifier 9 The blades on both sides of the output end change the resistance division ratio and change the reference voltage. In addition, in FIG. 23, the 16 series and the split resistors 12a, i 2b, and 12c are the same, and t ί H electricity !! And the same or equivalent part of FIG. 15 is assigned to 9: person: pay ~ slightly wish Bright. The operation is the same as that of the above-mentioned embodiment, and the description is omitted. For example, according to this embodiment 13, in addition to the Γπ f in the above-mentioned Embodiment 9, it is also because the switch section 20 and each of the division resistors are ...

1213, = 2C in parallel, the DC power supply U from the reference electric dust; General: The input impedance of the amplifier 9 is very large. In the example shown in Example 4, j and electricity must be continuously flowed through the switch for a long time. Under these conditions, it is difficult for each contact to maintain the reference voltage value. However, if the switch 20 and the split resistors 12a, 12b, and 12c are combined according to ^ ^ ^: the switch 20, the reference voltage DC power source U flows through the split resistor's power ... Because it can flow through, it is necessary to maintain stability against aging. The current value,

538654 V. Description of the invention (47) = It can be seen that the effect of the lighting lamp with high durability and reliability on the aging is achieved. ^ In addition, in FIG. 23, each of the switches 20, 12a, and 12 connected in parallel to each of the division resistors 12a, 12b, and 12c is shown. However, if the division resistors 12a, 12b are respectively , 1 2c Bypass ==, each: _0a, 20b, also available. In this case, an appropriate library is obtained: Ϊ: :: Kind of split ratio, with a small number of split resistors. Example 14, The discharge lamp point of 疋The effect of the lamp device. In the case of the fourth to thirteenth implementation examples, the reference voltage circuit 14 and the error amplifier 9 including the reference voltage circuit are also included if the reference voltage circuit is included. 〇 Chang Jing -... Disturbance noise caused by the discharge to the electric lamp 5c and the congratulations example 1 5 t of the cost of setting the switch department countermeasure! 5 ★ 2: The circuit board is stored in the casing 24 as shown, which reduces the risk of forming the circuit board. X, if the effect of gold flying is used. Disturbances caused by the discharge of the discharge k5c are shown in Example 1 to Example 13 above. . η The integration capacitor 10b, the difference amplifier 9, and the integration of the electric circuit 8 are properly selected. The integral is not particularly suitable. " The integration function of the error amplifier 9 is required.

538654 V. Description of the invention (48) Replace capacitor 1 〇b with a resistor for amplification. The integration function of the integration circuit 8 t in the error amplifier 9 may be integrated. In addition, in the above-mentioned Examples 1 to 13, the three types of the reference voltage of the input error amplifier 9 are set to three types, but the same effect can be obtained by setting two or four types or more. The discharge lamp load circuit 5 is exemplified for one lamp, but can also be applied to two or more lamps having the same rating. In addition, if the DC voltage power supply for reference voltage is used to stabilize the DC voltage supplied from the DC power supply 1, the power supply can be shared ', which has the effect of reducing the number of parts or costs. Also, as described above, the current control oscillation circuit (cc0) or voltage control oscillation circuit (VC0) is used to form the oscillation circuit in the inverter driving circuit 3, and it can be seen that the effect is exactly the same. Advantageous Effects of Invention The present invention has the following effects due to the structure shown in the above description. The structure is based on the reference voltage output from the reference voltage circuit. # The current is supplied from the watt phaser circuit to the discharge lamp load circuit.电路 ^ $ The circuit can rotate a variety of different reference voltages, and use the table to discharge: The lamp through J can be paid to meet the requirements of the discharge lamp with a variety of ratings of the Rose lamp lighting installation, because the reference voltage circuit settings With reference voltage: and: cut the resistance and generate various bases preset to the rated value of the discharge lamp; the reference voltage cover part of the electricity = does not need to adjust the reference voltage, there is a discharge lamp lighting device that can change the rated value The effect. Yu Fen 538654

Eight-'Because a DC voltage source and a sense resistor are set in the reference voltage circuit' and a reference voltage selection device which selects a reference voltage output from the reference voltage circuit is connected in parallel with the division resistor, a stable and stable The operation has the effect of obtaining a highly reliable discharge lamp lighting device, and 'the jumper is used in the reference voltage selection device, and the contact is not deteriorated due to microcurrent, etc.', and the operation can be stable against aging. , Has the effect that a highly reliable discharge lamp lighting device can be obtained. Also, because the jumper is configured on the circuit board on which the error amplifier is assembled, and a working hole is provided on the circuit board on which the jumper is assembled, the setting status of the jumper can be confirmed from the working hole. And cut off, you can also confirm the arrangement of the jumper and the selection of the reference voltage from the back of the circuit board, or change the rated value of the appropriate discharge lamp, and cover the mounting surface of the circuit board parts with a shell, etc. The effect of operation without removing the casing. — Also, because the reference voltage circuit is provided on the% circuit board on which the error amplifier is assembled, the output of the discharge lamp can be prevented from becoming unstable due to the influence of disturbing noise, and it is the same as that on other circuit boards. This has the effect of reducing the cost of noise countermeasures. Also, because the circuit board in which the reference voltage selection device is assembled is stored in a metal case, and an opening is provided in the case, the influence of disturbance noise can be reduced, the circuit board can be prevented from being damaged, and it is not necessary to remove the circuit board. The casing can confirm the setting status of the reference voltage selection device and the effect of the setting change from the opening. The reference voltage selection device is arranged in the order of the reference voltages.

Page 54 538654 After the value of the device, the voltage and the cut-off life when the discharge lamp is switched when the voltage is reversed. The operating part of the invention description (50) can reduce the error when using the voltage. The effect. In addition, the rated reference voltage of the discharge lamp of the load circuit of the lamp is selected as the reference voltage, and it becomes easy to set the reference standard voltage, and the selection or reference of the stop discharge lamp is wrong. The frequency setting device, and the output recognition of the detection circuit set by the initial frequency setting device is installed at the & value, and the short lamp of the discharge lamp can be prevented by appropriately setting the rated value of the start lamp. The reference voltage selection device selects the reference electrical structure and automatically selects the base of the suitable circuit wheel. The voltage selection device of the phase selector circuit is set incorrectly when the discharge lamp is replaced. The frequency of the load circuit is changed during operation. This rated value is quasi-voltage-proof. The basis of the switching frequency is to use the amount from the current discharge lamp to identify the output rating of the output number and change the value set by the digital sense device, and compare the operation of the f signal circuit signal < the control signal section. The suitability of the discharge lamp is due to the ^ α points 丨 the A / D converter materialized with the detection potential of the lick current, the memory, and the current value of the discharge lamp corresponding to the set switching frequency of the starting frequency. Remember the digital data detected by the A / D converter and store it in advance; the value is identified after the comparison of the discharge lamp installed in the household output control: the switch control section of the T, and according to the calculation circuit from the 'quasi-electricity' Switching the reference voltage of the circuit outputΨ Set the frequency measurement to detect the switching frequency of the inverter circuit

By using the information in the circuit, it can be adapted to the effect of a wide range of discharge lamp lighting devices. 538654 V. Description of the invention (51) The cut-off value of the basic output device, and the switching frequency of the output data due to the installed data. The customer's setting value of the pre-light lamp is based on the data from the reference power output. Settable effect. The quasi-voltage changing frequency can confirm that the reference position data is stored in the output voltage after the output voltage is adjusted. The clothing is selected according to the rating of the identification discharge lamp based on the identification of the discharge installed in the discharge lamp load circuit. Effect and the voltage selection device includes a " inverter for detecting the frequency, a circuit for recalling the inverter, and comparing the A / D ^, the switching of the memory circuit: conversion rate:? Measured digital control signal calculation circuit, αB, control signal of other amplifier circuit; = Department, and the relevant department, there is a suitable edge for the circuit to input the discharge lamp 5 ^ The circuit can be used for a wide range of discharge. The lamp lighting device is installed on the discharge lamp lighting device. The device is structurally selected from the reference voltage Z T 'because of the reference voltage selection and the reference voltage that can be output from the reference circuit corresponding to the smallest current value. Excessive current flows through the small rated value + ^ / has the effect of preventing the life of the discharge lamp. When the reference voltage is changed, the electric lamp is shortened. It is structurally close to the reference voltage selected at the time of change / the reference voltage selection device selects the reference voltage at this time, which can make the reference voltage of the reference voltage

The amount of change is small, and there is an effect that a light output position that is accompanied by comfort can be obtained. The more excellent discharge lamp is installed, and the person is trapped in the reference voltage to select the reference voltage output from the reference voltage circuit; ^ The setting can be manually set. It can also adapt to the discharge with a variety of ratings. 2 setting devices. Get the effect of a discharge lamp lighting device for electric lamps

538654 V. Description of Invention (52) Fruit. Also, because a buffer circuit that continuously changes the reference voltage input to the error amplifier is provided between the reference voltage circuit and the error amplifier, the drastic change in the light output of the discharge lamp accompanying the change in the reference voltage can be suppressed, making the light The smooth change of the output has the effect of reducing the difference between users < feeling of discomfort or discomfort, and excellent discharge lamp lighting device in terms of comfort. Brief Description of Drawings Figure 1 is a circuit diagram showing the structure of the first embodiment of the present invention. Fig. 2 is a circuit diagram showing a structure of a second embodiment of the present invention. Fig. 3 is a circuit diagram showing a structure of a third embodiment of the present invention. Fig. 4 is a structural diagram showing an assembled state of a circuit board according to the third embodiment of the present invention. Fig. 5 is a structural diagram showing another assembled state of the circuit board according to the third embodiment of the present invention. FIG. 6 is a circuit diagram showing a structure of Embodiment 4 of the present invention. Fig. 7 is a flowchart showing the operation of the fourth embodiment of the present invention. Fig. 8 is a diagram illustrating a method for identifying a rated value of a discharge lamp according to a fourth embodiment of the present invention. FIG. 9 is a characteristic diagram showing a relationship between a reference voltage and power consumption in Embodiment 4 of the present invention. Fig. 10 is a circuit diagram showing the structure of the fifth embodiment of the present invention. Fig. 11 is a flowchart showing the operation of the fifth embodiment of the present invention. Fig. 12 is a circuit diagram showing the structure of the sixth embodiment of the present invention.

Page 57 538654 V. Description of the invention (53) Circuit diagram of the structure of the seventh embodiment. Circuit diagram of the structure of Example 8. Circuit diagram of the structure of Example 9. The flowchart of the operation of Example 9. Understanding of Rating Values of the Discharge Lamp of Example 9 Figure 13 shows the reality of the invention Figure 14 shows the reality of the invention Figure 15 shows the reality of the invention Figure 16 shows the reality of the invention 1 7 is an explanatory diagram showing a specific method of the present invention. Fig. 18 is a characteristic diagram showing the relationship between the reference voltage and power consumption in the ninth embodiment of the present invention. FIG. 19 is a circuit diagram showing the structure of Embodiment 10 of the present invention. Fig. 20 is an explanatory diagram showing a method for identifying a rated value of a discharge lamp according to Embodiment 10 of the present invention. Example 11 is a circuit diagram of the structure. Example 12 is a circuit diagram of the structure. Circuit diagram of the structure of Example 13 Circuit diagram of the structure of the lamp lighting device. The structure of the DC power supply of the lamp lighting device. Figure 2 1 shows the actuality of the invention. Figure 2 2 shows the actuality of the invention. Figure 2 3 shows the actuality of the invention. Circuit diagram of the conventional discharge. Fig. 26 is a waveform diagram of a current flowing through a detection resistor in a conventional discharge lamp lighting device. Explanation of symbols 1 DC power supply 2 Inverter circuit 3 Inverter drive circuit 5 Discharge lamp Load circuit

Page 58 538654 V. Description of the invention (54) 5 c discharge lamp 6 current detection circuit 9 error amplifier 1 1 DC power supply for reference voltage 1 2, 12a, 12b, 12c split resistor 1 3 split resistor 14 reference voltage circuit 15 Reference voltage generation section 16 Divided resistor 19 Reference voltage selection device 20, 20a, 20b, 2 0c Switch (switch section) 21 Conductor 2 2 Circuit board 2 3 Working hole 2 4 Housing 2 5 Opening section 3 1 Starting frequency setting Device 3 2 Switch control section 32a A / D converter 32b memory circuit 32c arithmetic circuit 34 frequency setting resistor (starting frequency setting device) 3 5 diode 36 external setting switch (external setting device)

Page 59 538654 V. Description of the invention (55) 3 7 Integrating circuit for buffering (buffering circuit) 3 8 Resistor 4 1 Frequency detection device

11HII Page 60

Claims (1)

538654 6. Scope of patent application 1 · A discharge DC power supply; high-frequency current of the inverter 'circuit; discharge lamp negatively lights the discharge lamp; current detection current of the electric load circuit; reference voltage electric error amplifier reference voltage circuit rotation The phaser drive controls the inverter voltage and the reference voltage selection voltage from the reference voltage. 2 · If applying for a specific reference voltage select the base of the voltage output circuit 3 · If applying for a special reference voltage circuit with a DC power supply with an electrical sign, the corresponding value of the DC voltage source and the reference voltage lamp lighting device, including! Ί ΛIT ' The DC current supplied by the DC power source is converted into a circuit using the high-frequency current from the inverter circuit, and the negative circuit supplied from the inverter circuit to the discharge lamp is detected, which can be based on the basic circuit. Set the range of the road wheel selection device to the quasi-voltage range and the range of voltages. There are multiple types of non-selection devices to output a variety of different reference voltages. The output from the current detection circuit and the control signal generated from the quasi-voltage; The control signal of the error amplifier is supplied to the discharge lamp load circuit to control the current value corresponding to the reference voltage; and 'the discharge lamp lighting device of the first item selected based on the output of the reference voltage circuit is used, wherein the manufacture uses manual operation The discharge lamp lighting device selected from item 2 of the reference voltage, wherein the reference voltage is divided by a DC power source and the base is divided. And generating the divided resistor and a preset reference voltage generating portion of the discharge of the lamp with the reference voltage, is set from the reference voltage generating unit in the configuration produced 538654 t, the scope of patent application. Among the reference voltages generated by the patent, the output reference voltage is selected. 4. If the discharge lamp lighting device according to item 2 of the scope of patent application, the reference voltage circuit includes a DC power supply for reference voltage, a division resistor for dividing the reference voltage: a division resistor for the voltage of the power supply, and the division resistor connected in parallel with the division resistor. A reference voltage selecting device, and the reference voltage selecting device is configured to select a reference voltage output from the reference voltage circuit by selecting a bypassed split resistor. 5. The discharge lamp lighting device according to item 3 of the patent application scope, wherein a jumper is used on the reference voltage selection device. 6. The discharge lamp lighting device according to item 5 of the scope of patent application, wherein the jumper is configured on the circuit board on which the error amplifier is assembled, and the operation hole is provided on the circuit board on which the jumper is assembled. From this working hole, you can confirm and cut off the setting status of the jumper. 7. The discharge lamp lighting device according to item 2 of the scope of patent application, wherein the base-equal voltage circuit is provided on a circuit board on which the error amplifier is assembled. 8 · The discharge lamp lighting device according to item 2 of the scope of patent application, in which the circuit board incorporating the reference voltage selection device is stored in a metal case formed with an opening, and the reference voltage can be selected from the opening. Check the settings of the device and change the settings. 9. The discharge lamp lighting device according to item 2 of the scope of patent application, wherein the operating part of the reference voltage selection device is arranged in accordance with the sequence of the reference voltage. 10. The discharge lamp lighting device according to item 1 of the scope of patent application, wherein the reference voltage selection device automatically recognizes a rating of the discharge lamp installed in the discharge lamp load circuit in structure, and automatically selects a suitable rating for the discharge lamp. Reference voltage, Page 62, 538654, the scope of the patent application is from I ^ 1 1 · If the scope of the patent application is sixth · The discharge lamp lighting device of the scope of patent application item 10, where "the seven sides are provided with the inverter circuit The starting frequency setting of the switching frequency is set, and the reference voltage selection device is based on the use of the switching frequency of the starting frequency of two = two to set the switching frequency from the current measurement circuit. The rated value of the discharge lamp of the lamp load circuit. 12. The reference voltage selection device such as the item u in the patent application scope includes electricity; and The discharge lamp σ corresponding to the switching frequency determined by the two-out number must be set. The memory circuit of the digital machine value detected by the A / D converter and the current value are compared to identify the installed discharge lamp. 、 The switch finger control unit stored in the calculation circuit of the memory circuit in advance, and the data: the operation setting of the control signal, the frequency cut detection of the anti-amplifier circuit, the "lamp lighting device, the politician quasi-voltage Choose to place on the structure according to the frequency of That the measuring device / On switching frequency identification device in which the discharge lamp is negative 'level: frequency detector means to round out the ς carry put the chill 1s4 Patent application range of garden electrically item 13: the lamp rating. The reference electric circuit selection device is structurally equal to the discharge lamp lighting device. Among them: the frequency and the self-current detection circuit. The output of the ': value Λ from the frequency of the test device is directly on the discharge lamp. Load electric enemy electric lamp load circuit The reference electric selection device has 4 puts on the structure = lighting device, of which-a _——___ 'local standard voltage circuit round out 538654 6. Reference voltage for patent application and detection from this frequency The switching frequency output by the measuring device identifies the rated value of the discharge lamp installed in the discharge lamp load circuit. 16 · The discharge lamp lighting device according to item 13 of the scope of patent application, wherein the reference voltage selection device includes an A / D converter with digital data of the output of the frequency detection device, and the inverter circuit is memorized. Switching frequency memory circuit and switching circuit for computing circuit that compares digital data detected by the A / D converter with the switching frequency stored in the memory circuit in advance to identify the rated value of the installed discharge lamp and output a control signal And a switching unit that selects a reference voltage output from the reference voltage circuit according to a control signal from the arithmetic circuit. 1 7 · The discharge lamp lighting device according to item 13 of the scope of patent application, wherein when the discharge lamp lighting device is started, the reference voltage selection device is structurally selected to be neutral from the reference voltage that can be output by the reference voltage circuit. The minimum current value corresponds to the reference voltage. 1 8 · As for the discharge lamp lighting device 5 of the scope of application for patent 5, wherein when the reference voltage is changed, the reference voltage selection device is structurally selected from the reference voltage in sequence to the reference voltage selected at the time of change. Voltage. 19 • The discharge lamp lighting device according to item 10 of the scope of patent application, wherein the reference voltage selection device is provided with an external setting device that can manually set a reference voltage output from the reference voltage circuit. 2 0. The discharge lamp lighting device according to item 10 of the patent application scope, wherein a buffer circuit for continuously changing the reference voltage input to the error amplifier is provided between the reference voltage circuit and the error amplifier. P.64 538654 VI. Patent application scope 2 1 · If the discharge lamp lighting device of item 10 of the patent application scope, the reference voltage circuit is provided with a voltage having a DC power supply for the reference voltage and a voltage dividing the DC power supply for the reference voltage. The resistor divides the resistor and generates a plurality of different reference voltage generating reference voltage corresponding to a preset rated value of the discharge lamp, and the reference voltage selecting device is provided with a selection output from the reference voltage generated by the reference voltage generating unit. Switching part of reference voltage. 2 2 · The discharge lamp lighting device according to item 10 of the patent application scope, wherein the reference voltage circuit includes a DC power supply for a reference voltage, a division resistor for dividing a voltage of the DC power supply for the reference voltage, and a resistor connected in parallel with the division resistor. The switch section is composed of a switch, and the reference voltage selection device is structured to select a bypassed split resistor by selecting a switch in the switch section, and select + a reference voltage output from the reference voltage circuit. 2 3. The discharge lamp lighting device according to item 10 of the scope of patent application, wherein the reference voltage circuit is provided on a circuit board on which the error amplifier is assembled, and the reference voltage circuit and the circuit board on which the error amplifier is assembled Collected 'in a metal case. U P.65