WO2004006632A1 - 放電灯点灯装置 - Google Patents
放電灯点灯装置 Download PDFInfo
- Publication number
- WO2004006632A1 WO2004006632A1 PCT/JP2003/008300 JP0308300W WO2004006632A1 WO 2004006632 A1 WO2004006632 A1 WO 2004006632A1 JP 0308300 W JP0308300 W JP 0308300W WO 2004006632 A1 WO2004006632 A1 WO 2004006632A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- voltage
- change point
- power
- discharge
- lighting
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/36—Controlling
- H05B41/38—Controlling the intensity of light
- H05B41/382—Controlling the intensity of light during the transitional start-up phase
- H05B41/388—Controlling the intensity of light during the transitional start-up phase for a transition from glow to arc
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
- H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
- H05B41/288—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices and specially adapted for lamps without preheating electrodes, e.g. for high-intensity discharge lamps, high-pressure mercury or sodium lamps or low-pressure sodium lamps
- H05B41/2881—Load circuits; Control thereof
- H05B41/2882—Load circuits; Control thereof the control resulting from an action on the static converter
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
- H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
- H05B41/288—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices and specially adapted for lamps without preheating electrodes, e.g. for high-intensity discharge lamps, high-pressure mercury or sodium lamps or low-pressure sodium lamps
- H05B41/2881—Load circuits; Control thereof
- H05B41/2882—Load circuits; Control thereof the control resulting from an action on the static converter
- H05B41/2883—Load circuits; Control thereof the control resulting from an action on the static converter the controlled element being a DC/AC converter in the final stage, e.g. by harmonic mode starting
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/36—Controlling
- H05B41/38—Controlling the intensity of light
- H05B41/382—Controlling the intensity of light during the transitional start-up phase
- H05B41/386—Controlling the intensity of light during the transitional start-up phase for speeding-up the lighting-up
Definitions
- the present invention relates to a discharge lamp lighting device used for a headlight of a car, a lighting lamp of an indoor / outdoor facility, a warehouse, a factory, and the like, and a street lamp.
- high-intensity discharge lamps such as metal halide bulbs, high-pressure sodium valves, and mercury bulbs have advantages such as large luminous flux, high lamp efficiency, and long life. ing. For this reason, they have been used as lighting and street lights in indoor and outdoor facilities, warehouses, factories, etc., and in particular, in recent years, they have been used as headlights for vehicles such as automobiles. is there.
- a normal HID bulb stabilizes the inter-electrode voltage (bulb voltage) of the HID valve during discharge and light emission to a predetermined voltage, and stabilizes the amount of light emission.
- Gas, various metal halides and mercury are used. This is achieved by filling the bulb with mercury, for example, in a vehicle-mounted 35 W HID bulb (typically one of the D1 and D2 types), which reduces the bulb voltage during stable lighting. This is because it can be stabilized at 85 V. Due to these advantages, mercury is still commonly used in most HID valves at present.
- HID valve that does not use mercury, as described in Japanese Unexamined Patent Application Publication No. 95, Japanese Patent Application Laid-Open No. 2000-1101099, Japanese Unexamined Patent Application Publication No. Is being studied.
- HID valves for vehicles HID valves that do not use mercury (typically D3 and D4 types) have been proposed.
- This in-vehicle HID valve that does not use mercury uses no mercury and uses, for example, zinc or indium. However, zinc zinc is less volatile than mercury before it evaporates. Requires more heat.
- the D 1 and D 2 type HID bulbs have a specification that the valve voltage at stable lighting is 85 V
- the D3 and D4 type HIDs have a valve specification of 42 V when the lamp is lit stably.
- the behavior immediately after the start of lighting is also different. For example, the voltage immediately after the HID bulb starts lighting is determined by the gas composition and pressure inside the HID bulb, but with a conventional HID bulb using mercury, the gaseous mercury quickly drops. HID bulb voltage rises quickly, and furthermore, the amount of light emission increases quickly because mercury gasified emits light by itself.
- a constant light emission amount can be obtained.
- HID bulbs that do not use mercury do not have mercury that causes the above-mentioned voltage drop
- only xenon gas is contained inside the HID bulb until the metal halide inside the HID bulb evaporates to gas immediately after starting lighting. not exist. Therefore, the voltage of the HID bulb that does not use mercury immediately after the start of lighting is low and almost constant due to only the voltage drop of xenon gas. Also, the amount of light Since the xenon gas only emits light, the amount of light emitted with respect to the input power is small.
- HID valves that require a large amount of heat before the metal in the HID valve evaporates can be used for conventional mercury-containing HID valves.
- the output power is attenuated before the metal halide evaporates, in other words, without waiting for the metal halide to emit light.
- the filler is vaporized, the amount of light emission increases rapidly, and there is a problem that the amount of light emitted when the discharge lamp is turned on is not stable. Disclosure of the invention
- a discharge lamp lighting device includes a power supply circuit for supplying power to a discharge bulb, a starting circuit for applying a high voltage pulse for starting discharge of the discharge bulb, and a power supply circuit and a starting circuit.
- the control circuit includes a change point detecting means for detecting a change point at which the voltage of the discharge bulb rises after the start of lighting of the discharge bulb, and lighting of the discharge bulb. After the start, a first power is supplied, and when the change point detecting means detects a change point, a power control means for supplying a second power smaller than the first power is provided.
- the change point detecting means is configured using a differentiating circuit.
- the change point detecting means sets a voltage of the discharge bulb in a stable lighting state at a rated power as a stable voltage, and sets a voltage value of a predetermined ratio to the stable voltage as a change point.
- the power control means is configured to start decreasing the output power when the change point detection means detects the change point, and to gradually reduce the output voltage to the rated power. Is what it is.
- the change point detecting means includes a voltage value obtained by adding a predetermined voltage to a voltage of the discharge bulb when the lamp is lit at a constant voltage immediately after the start of lighting, as a change point.
- the power control means is configured to start attenuating the output power when the change point detecting means detects the change point, and to gradually reduce the output voltage to the rated power. It is something.
- the change point detecting means detects the lowest voltage as the lowest valve voltage among the discharge valve voltages immediately after the start of lighting, and detects the lowest valve voltage.
- the power control means starts attenuating the output power. It is designed to gradually reduce the output voltage to the rated power.
- the change point detecting means sets a voltage of the discharge bulb in a stable lighting state at a rated power as a stable voltage, a voltage value of a predetermined ratio to the stable voltage, and lighting.
- a voltage value obtained by adding a predetermined voltage to the discharge bulb voltage when the lamp is lit at a constant voltage immediately after the start, and the lowest voltage among the discharge valve voltages immediately after the start of the lighting are sequentially detected.
- the change point detecting means includes a voltage value obtained by adding a predetermined voltage to a voltage of the discharge bulb when the lamp is lit at a constant voltage immediately after the start of lighting, as a change point.
- the power control means has a stable voltage of the discharge bulb in a lighting state stable at the rated power as a stable voltage, and the change point detecting means detects a change point. Then, the output power starts decreasing, and the output voltage is gradually reduced until the discharge bulb reaches the stable voltage.
- the power control means when the change point detecting means detects the change point, starts attenuating the output power, and performs a predetermined discharge from a voltage corresponding to the change point.
- the output power is gradually reduced to the rated power based on the relationship between the valve voltage and the output power.
- the light emission amount of the discharge bulb can be kept constant even during the attenuation control.
- a discharge lamp lighting device that can be used for a HID bulb that does not use mercury of an in-vehicle head lamp that requires a steep rise in the amount of light emission and a constant amount of light emission with little unevenness is obtained.
- the power control means when the change point detection means detects the change point, starts attenuating the output power, and starts the predetermined lighting from a voltage corresponding to the change point. Relationship between elapsed time and output power Based on this, it is configured to gradually reduce the output power to the rated power.
- the power control means holds information indicating a relationship between a predetermined discharge bulb voltage and output power, and has a discharge bulb voltage value corresponding to a change point, Immediately after the start of lighting, if the discharge bulb voltage exceeds the discharge bulb voltage value corresponding to the change point, the output power is attenuated from the output power value corresponding to the discharge bulb voltage based on the information. The output voltage is gradually reduced to the rated power.
- the power control means includes: a discharge valve voltage value corresponding to a change point; information on a relationship between the discharge valve voltage and lighting elapsed time; and information on a relationship between the lighting elapsed time and output power. If the discharge bulb voltage exceeds the discharge bulb voltage value corresponding to the change point immediately after the start of lighting, the discharge is performed based on information on the relationship between the discharge bulb voltage and the lighting elapsed time. The lighting elapsed time corresponding to the valve voltage is determined, and the output power is attenuated based on the information on the relationship between the lighting elapsed time and the output power from the output power value corresponding to the determined lighting elapsed time. It is designed to gradually lower the output voltage up to the rated power.
- FIG. 1 is a block diagram of a discharge lamp lighting device according to Embodiment 1 of the present invention.
- FIG. 2 is an output characteristic diagram showing a control operation according to the first embodiment of the present invention.
- FIG. 3 is a flowchart showing the operation of the second embodiment of the present invention.
- FIG. 4 is an output characteristic diagram showing a control operation according to the third embodiment of the present invention.
- FIG. 5 is an output characteristic diagram showing a control operation according to the fourth embodiment of the present invention.
- FIG. 6 is an output characteristic diagram showing a control operation according to the fifth embodiment of the present invention.
- FIG. 7 is an output characteristic diagram showing a control operation according to the sixth embodiment of the present invention.
- FIG. 8 is an output characteristic diagram showing a control operation according to Embodiment 7 of the present invention.
- FIG. 9 is an output characteristic diagram showing a control operation according to the eighth embodiment of the present invention.
- FIG. 10 is an output characteristic diagram showing a control operation according to the ninth embodiment of the present invention.
- FIG. 11 is an output characteristic diagram showing a control operation of the tenth embodiment of the present invention.
- FIG. 12 is an output characteristic diagram showing a control operation according to Embodiment 11 of the present invention.
- FIG. 1 is a block diagram of the discharge lamp lighting device according to the first embodiment.
- the discharge lamp lighting device includes a power supply 1, a DC / DC converter 2, a current detection resistor 3, a ground terminal 4, an H / B inverter 5, a starting circuit (IGN). 6, HID valve 7, valve voltage detector 8, resistors 9, 10 and control circuit 11 are provided.
- Power supply 1 is a power supply such as a vehicle battery.
- the DC / DC converter 2 is a DC / DC converter for boosting the DC power of the power supply 1.
- the current detecting resistor 3 is a resistor for detecting a current flowing from the DCZC converter 2 to the H / B inverter 5, that is, a current flowing to the HID valve 7. You.
- the ground terminal 4 is for grounding one end of the current detecting resistor 3 to the body of an automobile or the like.
- the H / B inverter 5 is an inverter circuit using an H-bridge circuit for converting DC output from the DCZDC converter 2 into AC.
- the power supply 1, the DC / DC converter 2 and the HZB inverter 5 constitute a power supply circuit for supplying power to the HID valve 7.
- the starting circuit 6 is an igniter (IGN) for starting the lighting of the HID valve 7.
- HID bulb 7 is a discharge bulb that does not use mercury.
- the valve voltage detector 8 is a circuit that detects the valve voltage of the HID valve 7 and is configured to output a detection signal to the control circuit 11.
- the resistors 9 and 10 are voltage dividing resistors for detecting the HID valve voltage.
- the control circuit 11 is a control circuit for controlling the D CZD C converter 2 based on the output of the valve voltage detection unit 8, and includes a change point detection unit 101 and a power control unit 102.
- the change point detecting means 101 is a means for detecting a change point of the HID valve voltage in the HID valve 7 from a constant low voltage to a stable voltage based on a detection value from the valve energization detection unit 8.
- the power control means 102 is means for controlling the output power of the HID valve 7 based on the change point detected by the change point detection means 101.
- the power control means 102 controls the current flowing through the HID valve 7 by controlling the duty ratio of the DC / DC converter 2, for example.
- FIG. 2 is a characteristic diagram illustrating a control operation according to the first embodiment.
- FIG. 2 shows the HID bulb voltage, the output power, and the light emission characteristics of the discharge lamp lighting device according to the present embodiment and the HID valve that does not use mercury.
- (a) shows the amount of light emission
- (b) shows the voltage of the HID bulb 7.
- (c) shows the output power of the HID valve.
- the HID bulb voltage is about 3 OV, and the amount of light emitted at this time is almost proportional to the output power, and the duration is almost inversely proportional to the output power. Therefore, in order to obtain fast and bright light, as shown by A in Fig. 2, large power (first power) continues to be output while the HID bulb voltage remains almost constant, and the time during which only xenon gas emits light is reduced. It is to be shortened.
- the HID bulb voltage rises as shown by B in FIG. 2, and at the same time, the light emission increases.
- the output power is suppressed as shown by C, and the light emission is adjusted so as not to become too large (a second power smaller than the first power is supplied).
- the output power begins to decay as the main emission shifts to the metal halide, and the output power is gradually reduced to the rated power.
- the change point detecting means 101 detects, as a change point, the timing at which the HID valve voltage rises due to the start of vaporization of the metal halide, and the power control means 102 detects this change point. Control is performed so that the output power is gradually reduced according to the timing.
- the HID bulb voltage is substantially constant, and the amount of light emitted at this time is approximately proportional to the output power, although the luminous efficiency is low.
- the timing at which the emission of xenon gas and the emission of metal halide are switched is the point at which the (2) HID valve voltage starts to rise from the substantially constant HID valve voltage in (1). Therefore, while the voltage of the HID bulb is low and almost constant, a large amount of electric power is output, and the required amount of light emission is secured only by xenon gas. After that, the output power starts to decay from the point where the voltage of the HID valve rises sharply, and the output power gradually decreases to the rated power. As a result, it is possible to obtain an output power characteristic that leads to stable light emission.
- the change point detecting means 101 is constituted by a differentiating circuit.
- the differentiating circuit may be constituted by dedicated hardware, or may be constituted by a program executed by a computer.
- the control circuit 11 is constituted by a computer, and the change point detecting means 10
- the operation when 1 and the power control means 102 are composed of a program corresponding to each function and hardware such as a central processing unit and a memory for executing the program is as follows.
- FIG. 3 is an operation flow chart when the control circuit 11 is constituted by a computer.
- the change point detecting means 101 determines whether the HID valve voltage has increased (step ST 1). If the HID valve voltage has not risen in step ST1, the process proceeds to step ST2, and the power control means 102 controls the output power to be constant. That is, this state corresponds to the state where the HID valve voltage is A in FIG. On the other hand, when the valve voltage is rising in step ST1, the power control means 102 performs control so as to attenuate the output power (step ST3). That is, this state corresponds to the state in which the HID valve voltage is B in FIG. Next, after step ST2 and step ST3, the change point detecting means 101 determines whether the lighting of the HID valve 7 has been completed, that is, whether or not the power has been turned off. Returning to step ST1, the above control operation is continued, and when the lighting is completed, the control operation is ended.
- the timing (change point) at which the emission of the metal halide starts from the state in which only the xenon gas emits immediately after the start of the ignition is based on the differential output of the HID valve voltage.
- HID that does not use mercury in automotive headlamps that require a steep rise in luminescence intensity and stable lighting can be detected without missing the timing when the metal halide starts to emit light.
- a discharge lamp lighting device compatible with a bulb can be realized.
- the change point detecting means 101 sets a predetermined value of the stable voltage with respect to a voltage in a state where the lighting of the HID valve 7 is stable and the HID valve voltage is stable (this is referred to as a stable voltage).
- each section of the discharge lamp lighting device including the power control means 102 is configured to set a value of 70% as a change point as a percentage of the change. Further, since the configuration of each section of the discharge lamp lighting device including the power control means 102 is the same as that of the first embodiment shown in FIG. 1, the description is omitted here.
- FIG. 4 is a diagram showing HID pulp voltage and output power characteristics by a lighting device and a HID bulb not using mercury according to Embodiment 3 of the present invention.
- the voltage of the HID valve which is determined by the components and pressure of the internal gas, varies due to individual differences. If the change point is a fixed value, it cannot be applied to the HID valve with the variation, so in this embodiment, The value of the change point for detecting the rise in the voltage of the HID valve is set to 70% of that when the lamp is stably lit at the rated power. That is, the change point detecting means 101 previously stores the HID valve voltage when the HID valve 7 is stably lit at the rated power (turned on once) as a stable voltage. Then, a timing exceeding 70% of this stable voltage is set as a change point.
- the change point detecting means 101 monitors the voltage at the change point as a comparison voltage with the HID valve voltage after the start of lighting, and when the comparison voltage is exceeded, sends a notification indicating this to the electric power. This is performed for the control means 102.
- the power control means 102 starts attenuating the output power from the notified timing and gradually reduces the output power to the rated power.
- the stable voltage value of the HID valve 7 may be set to a default value for the first time, and the second and subsequent times may be used by storing the previous stable voltage value.
- the value of the predetermined ratio with respect to the stable voltage is set to 70%, but this value may be changed as appropriate.
- the voltage at the changing point is set using the HID valve voltage at the time of stability, the voltage of the HID valve varies depending on individual differences. Even in such a case, it is possible to set an optimum change point for each HID valve.
- Embodiment 4 it is possible to detect the timing when the halide starts to emit light without missing, and it is compatible with HID bulbs that do not use mercury in automotive headlamps that require a sharp rise in the amount of light emission and stable lighting. A discharge lamp lighting device that can be realized. Embodiment 4.
- the change point detecting means 101 sets the voltage obtained by adding a predetermined voltage to the voltage of the HID valve 7 when the lamp is lit at a constant voltage immediately after the start of lighting as the change point. It is configured to be used. Note that the other configuration including the power control means 102 is the same as that of the first embodiment, and a description thereof will be omitted.
- FIG. 5 is a diagram showing a HID bulb voltage and an output power characteristic by a discharge lamp lighting device and a HID bulb not using mercury according to Embodiment 4 of the present invention.
- the voltage of the HID valve which is determined by the composition and pressure of the internal gas, varies due to individual differences, and corresponds to the HID valve 7, which has a variable point of change (comparison voltage with the HID valve voltage) at a fixed value. Since the change point detection means 101 cannot change the change point, the HID bulb voltage at the time of lighting with the xenon gas stored in advance during the period when only the xenon gas is emitting light immediately after the start of lighting is kept at a low voltage. As the voltage, a value obtained by adding a certain voltage (for example, 2 V) from the low constant voltage is set as a change point.
- a certain voltage for example, 2 V
- the change point detecting means 101 monitors the voltage at the change point as a comparison voltage with the HID valve voltage after the start of lighting, and when the comparison voltage is exceeded, sends a notification indicating this to the electric power. This is performed for the control means 102.
- the power control means 102 starts damping the output power at the timing of receiving this notification, and gradually reduces the output power to the rated power.
- the output power may be reduced more than when the voltage exceeds 32 V.
- the value of the low voltage constant voltage of the HID valve 7 may be set to a default value for the first time, and the second time and thereafter may be used by storing the value of the previous constant voltage.
- the value obtained by adding 2 V to the constant voltage is set as the voltage at the change point, but this value may be changed as appropriate.
- a value obtained by adding a predetermined voltage to a constant low voltage of the HID valve voltage is set as the voltage at the change point, so that the HID valve Even if the voltage varies due to individual differences, it is possible to set the optimum change point for each HID valve.
- This makes it possible to detect the timing at which the metal halide starts to emit light without missing it, and it is compatible with HID bulbs that do not use mercury in automotive headlamps that require a sharp rise in light emission and stable lighting.
- a discharge lamp lighting device that can be realized can be realized.
- the change point detecting means 101 determines the lowest voltage among the successive detections of the HID valve voltage immediately after the start of lighting as the lowest valve voltage, and determines the lowest valve voltage as a predetermined voltage. It is configured to set the value obtained by adding as the voltage at the change point. Note that the other configuration including the power control means 102 is the same as that of the first embodiment, and a description thereof will be omitted.
- FIG. 6 is a diagram showing HID valve voltage and output power characteristics according to Embodiment 5 of the present invention.
- the change point detecting means 101 detects the HID valve voltage from the valve voltage detector 8 (the HID valve voltage when the HID valve is lit by xenon gas) after the start of lighting (valve break) in the HID valve 7. ) Is monitored. Then, during this monitoring period, the point where the HID valve voltage has decreased most is determined as the lowest valve voltage. Further, the change point detecting means 101 sets a value (for example, 2 V) obtained by adding a predetermined voltage to this minimum valve voltage as a change point, and outputs this to the power control means 102. For example, if the lowest detected reference voltage is 30 V, 32 V is set as the change point voltage.
- the power control means 102 When notified from the change point detecting means 101 that the change point has been exceeded, the power control means 102 starts attenuating the output power as in the above-described embodiments, and gradually decreases to the rated power. Output power.
- the HID valve voltage immediately after the start of lighting is sequentially detected, the lowest lowest valve voltage is obtained immediately after the start of lighting, and a value obtained by adding a predetermined voltage to the lowest valve voltage is obtained.
- the change point detecting means 101 stores information such as the previous change point or a low voltage constant voltage. No need. Therefore, the discharge lamp lighting device Therefore, it is not necessary to have a means such as a non-volatile memory for storing the value of the previous change point or the like. Also, since the changing point is set for each lighting, even when the HID bulb 7 is first turned on when replacing the in-vehicle headlamps, the optimal lighting for the HID bulb 7 is performed. Control can be performed.
- the change point detecting means 101 is set in advance to (1) a predetermined ratio of the voltage to the stable voltage of the HID valve voltage, and (2) a fixed low voltage immediately after the start of lighting stored in advance. (3) The lowest valve voltage is obtained by successively detecting the HID valve voltage immediately after the start of lighting, and the lowest valve voltage is obtained by adding a predetermined voltage to this lowest valve voltage. Is set as the change point. Note that the other configuration including the power control means 102 is the same as that of the first embodiment, and a description thereof will be omitted.
- FIG. 7 is a diagram showing HID valve voltage and output power characteristics according to Embodiment 6 of the present invention.
- a change point A is a voltage value of 70% of the stable voltage of the HID valve voltage, which is a value obtained in the same manner as in the third embodiment.
- the change point B is a voltage value obtained by adding 2 V to the voltage stored as the previous lowest voltage, which is a value obtained in the same manner as in the fourth embodiment.
- the change point C is a value obtained by adding 2 V to the minimum voltage from the start of lighting, which is a value obtained in the same manner as in the fifth embodiment.
- the change point detecting means 101 previously stores the voltage value of the change point A and the voltage value of the change point B.
- the voltage value of the change point C is obtained.
- a value of 70% of the stable voltage (corresponding to the change point A in the figure) is 33 V
- a value obtained by adding 2 V to the previously stored minimum voltage (corresponding to the change point B in the figure) Is 32 V. If the value obtained by adding 2 V to the lowest voltage detected immediately after the start of lighting (corresponding to the change point C in the figure) is 31 V, 31 V is calculated as the voltage at the change point. And set.
- the power control means 102 When the power control means 102 receives the notification indicating that the change point has been exceeded from the change point detection means 101, the power control means 102 starts to attenuate the output power as in the above-described embodiments, and the power control means 102 Gradually lower the output power.
- the change point detecting means 101 changes the voltage value obtained by adding a predetermined voltage to the voltage of the HID valve 7 when the lighting is performed at a constant low voltage immediately after the lighting is started. It is configured to be used as a point.
- the power control means 102 reduces the output power gradually at the timing of the change point output from the change point detection means 101 and stabilizes the HID valve 7.
- a voltage for example, 42 V
- the output power is controlled to a constant value when the HID valve voltage reaches this stable voltage.
- FIG. 8 is a diagram showing the relationship between the HID valve voltage and the output power according to the seventh embodiment.
- the change point detecting means 101 preliminarily estimates the HID valve voltage when the HID valve is lit by xenon gas to a constant value (30 V in this case), and the constant value has a certain margin value ( Here, 2 V) is added to make the voltage at the transition point (here, 32 V).
- a constant low voltage may be obtained for each HID valve 7, and the voltage at the change point may be obtained based on this.
- the change point detecting means 101 compares the HID valve voltage of the HID valve 7 from the valve voltage detection section 8 with the voltage at this change point (comparison voltage), and when the HID valve voltage exceeds the comparison voltage, The notification is made to the power control means 102.
- the power control means 102 starts attenuation control of the output power.
- the damping control is performed until the HID valve voltage reaches a stable voltage (the rated voltage (42 V) at the time of lighting by metal halide) stored in advance, and when the stable voltage is reached, the output power is reduced. Control to a constant value.
- the stable voltage value of the HID valve voltage is held, and the change point of the predetermined value is added to the constant low voltage. Since the output power attenuation control is performed from the voltage to this stable voltage, the following effects are obtained.
- the power control means 1 2 is configured to control the output power based on a predetermined relationship between the HID valve voltage and the output power from the voltage corresponding to the change point. I have. Further, the configuration of each part of the discharge lamp lighting device including the change point detecting means 101 is the same as that of each of the above-described embodiments, and therefore the description thereof is omitted.
- FIG. 9 is an explanatory diagram showing the relationship between the HID valve voltage and the output power in rectangular coordinates.
- the output power is b with respect to the HID valve voltage a, and the respective relationships are determined in advance.
- the relationship between these points is the point indicating the HID valve voltage at which damping starts and the output power (the point at which the HID valve voltage and output power correspond to the transition point), and the HID valve voltage during stable lighting (stable voltage).
- the points indicating the rated power are connected by a straight line.
- the power control means 102 includes such HID valve voltage and output power.
- the change point detecting means 101 notifies that the HID valve voltage has exceeded the change point, the information based on such a relation between the HID valve voltage and the output power is stored.
- the output power is controlled to be attenuated by the above-described description, the characteristic of linearly changing between two points has been described in the above description, but it may be configured to change in a curved line or stepwise.
- the power control unit 102 controls the output power based on the predetermined relationship between the HID valve voltage and the output power from the change point. The following effects are obtained.
- the power control means 102 starts attenuation control based on the change point, and thereafter controls the output power based on a predetermined relationship between the lighting elapsed time and the output power. It is configured as follows. Further, the configuration of each part of the discharge lamp lighting device including the change check means 101 is the same as that of each of the above-described embodiments, and the description thereof will be omitted.
- Fig. 10 is an explanation showing the relationship between the lighting elapsed time and the output power in rectangular coordinates.
- a relationship is set such that the output power is d with respect to the lighting elapsed time c.
- these relations are a point indicating the lighting elapsed time at which the attenuation starts and the output power (point of the lighting elapsed time and the output power corresponding to the change point), and a point indicating the rated output power and the lighting elapsed time. Are connected by a straight line.
- the relationship between the lighting elapsed time and the output power is stored in the power control means 102, and when the change point detection means 101 notifies that the change point has been reached, The output power is controlled based on the relationship between the lighting elapsed time and the output power.
- the characteristic of changing linearly according to the lighting elapsed time has been described.
- the characteristic may be changed in a curved line or stepwise manner.
- the power control unit 102 controls the output power based on a predetermined relationship between the lighting elapsed time and the output power. This has the following effects.
- the power control means 102 holds information indicating a predetermined relationship between the HID valve voltage and the output power, If the HID valve voltage has an equivalent HID valve voltage and the HID valve voltage exceeds the HID valve voltage corresponding to this change point, the damping control should be started from the output power value corresponding to the HID valve voltage.
- the configuration of each part of the discharge lamp lighting device including the change point detecting means 101 is the same as that of each of the above-described embodiments, and the description thereof is omitted.
- FIG. 11 is an explanatory diagram showing the relationship between the HID valve voltage and the output power in rectangular coordinates. As shown in the figure, for example, the output power is f with respect to the HID valve voltage e, and the respective relationships are determined in advance. This straight line is the same as in Embodiment 8 shown in FIG.
- the power control means 102 stores such a relationship between the HID valve voltage and the output power, and also stores the value of the HID valve voltage corresponding to the change point. Therefore, even if the HID valve voltage exceeds the voltage at the change point immediately after the start of lighting, for example, when the power is turned on immediately after turning off the HID valve 7, accurate attenuation control of the output power is performed. It can be carried out.
- the characteristic of changing linearly between two points is shown.
- the characteristic may be changed in a curved line or a step shape.
- the power control means 102 determines from the output power corresponding to this voltage. Since the damping control is performed, the following effects are obtained.
- Embodiment 11 1.
- the power control means 102 includes a HID bulb voltage value corresponding to a change point, a relational report of the lighting elapsed time with respect to the HID pulp voltage, and a relational information of the output power with the lighting elapsed time. If the HID bulb voltage exceeds the HID bulb voltage corresponding to the change point immediately after the start of lighting, the lighting elapsed time corresponding to the HID bulb voltage is obtained, and the output corresponding to the lighting elapsed time is obtained. The damping control is started from the value of the power, and thereafter, the control is performed based on the relationship between the lighting elapsed time and the output power.
- each section of the discharge lamp lighting device including the change point detecting means 101 is the same as that of each of the above-described embodiments, and the description thereof will be omitted.
- FIG. 12 is an explanatory diagram showing the operation of the eleventh embodiment.
- A shows the relationship between the HID bulb voltage and the output power
- B shows the relationship between the lighting elapsed time and the output power.
- the power control means 102 first uses the HID valve voltage at which normal damping starts and a linear output power characteristic (A in FIG. 12) representing the output power to obtain the HID valve voltage.
- the output power value is calculated from the valve voltage.
- the output power h is calculated for the voltage g immediately after the start of lighting.
- the output power expressed as a straight line is the normal lighting elapsed time and output power. From the force characteristics (B in Fig. 12), calculate the lighting elapsed time corresponding to the lighting elapsed time after the start of damping.
- the corresponding lighting elapsed time i is calculated, and assuming that the corresponding lighting elapsed time i has already passed, the lighting elapsed time after the normal start of attenuation and the output power are linearly calculated. Attenuation is performed according to the output power characteristic indicated by, and control is performed until the rated power is reached. As described above, according to Embodiment 11, first, it is determined whether the HID valve voltage exceeds the voltage at the change point, and if so, the value of the output power corresponding to the HID valve voltage is determined. Ask.
- the value of the elapsed lighting time corresponding to the determined output power is determined, and based on the relationship between the lighting elapsed time and the output power, the attenuation control is performed from the output power value corresponding to the determined elapsed lighting time.
- the attenuation control is performed in accordance with the relationship between the lighting elapsed time and the output power, for example, even when the stable voltage of the HID valve 7 fluctuates, there is an effect that accurate output power attenuation control can be performed. is there.
- the discharge lamp lighting device according to the present invention is applied to a discharge lamp lighting device such as an HID bulb in a vehicle-mounted head lamp that does not use mercury. It is suitable for stable lighting with little fluctuation.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/488,086 US7091673B2 (en) | 2002-07-02 | 2003-06-30 | Discharge lamp lighting device |
DE10392144T DE10392144B4 (de) | 2002-07-02 | 2003-06-30 | Elektronisches Vorschaltgerät für Entladungslampen |
JP2004519219A JP4708020B2 (ja) | 2002-07-02 | 2003-06-30 | 放電灯点灯装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002-193443 | 2002-07-02 | ||
JP2002193443 | 2002-07-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004006632A1 true WO2004006632A1 (ja) | 2004-01-15 |
Family
ID=30112282
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/008300 WO2004006632A1 (ja) | 2002-07-02 | 2003-06-30 | 放電灯点灯装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US7091673B2 (ja) |
JP (1) | JP4708020B2 (ja) |
DE (1) | DE10392144B4 (ja) |
WO (1) | WO2004006632A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006019241A (ja) * | 2004-05-31 | 2006-01-19 | Stanley Electric Co Ltd | 放電灯点灯装置及び放電灯点灯方法 |
JP2007005022A (ja) * | 2005-06-21 | 2007-01-11 | Mitsubishi Electric Corp | 放電灯点灯装置 |
JP2012508430A (ja) * | 2008-11-07 | 2012-04-05 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | ガス放電ランプに対する電力供給 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4890809B2 (ja) * | 2005-07-28 | 2012-03-07 | ハリソン東芝ライティング株式会社 | メタルハライドランプ、メタルハライドランプ点灯装置および前照灯 |
TW200729687A (en) * | 2006-01-24 | 2007-08-01 | Benq Corp | Monitor and power circuit thereof |
JP4972992B2 (ja) * | 2006-05-10 | 2012-07-11 | ウシオ電機株式会社 | 高圧放電ランプ点灯装置 |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04272696A (ja) * | 1991-02-06 | 1992-09-29 | Mitsubishi Electric Corp | 放電灯点灯装置 |
JPH04342988A (ja) * | 1991-05-21 | 1992-11-30 | Mitsubishi Electric Corp | 放電灯点灯装置 |
JPH05205888A (ja) * | 1992-01-27 | 1993-08-13 | Mitsubishi Electric Corp | 高圧放電灯点灯装置 |
JPH0645081A (ja) * | 1992-07-27 | 1994-02-18 | Mitsubishi Electric Corp | 放電灯点灯装置 |
JPH07176388A (ja) * | 1993-12-21 | 1995-07-14 | Mitsubishi Electric Corp | 高圧放電灯点灯装置 |
US5481163A (en) * | 1993-08-03 | 1996-01-02 | Mitsubishi Denki Kabushiki Kaisha | Discharge lamp current controlling circuit |
JPH08222381A (ja) * | 1995-02-13 | 1996-08-30 | Matsushita Electric Ind Co Ltd | 放電灯点灯装置 |
JPH09237691A (ja) * | 1996-02-28 | 1997-09-09 | Koito Mfg Co Ltd | 放電灯点灯回路 |
JPH11317298A (ja) * | 1998-04-30 | 1999-11-16 | Toshiba Lighting & Technology Corp | 放電ランプの点灯装置 |
JP2003151787A (ja) * | 2001-08-29 | 2003-05-23 | Harison Toshiba Lighting Corp | 高圧放電ランプ点灯装置および自動車用ヘッドライト装置 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4952848A (en) * | 1988-07-05 | 1990-08-28 | North American Philips Corporation | Signal generating circuit for ballast control of discharge lamps |
JP3197166B2 (ja) * | 1994-09-02 | 2001-08-13 | 株式会社小糸製作所 | 放電灯の点灯回路 |
DE19534864A1 (de) * | 1995-09-20 | 1997-03-27 | Bosch Gmbh Robert | Steuergerät für den schnellen Lichtanlauf einer Hochdruck-Gasentladungslampe |
DE29616655U1 (de) * | 1996-09-26 | 1998-02-05 | Bosch Gmbh Robert | Anordnung zum Erkennen des Zustandes einer Hochdruck- Gasentladungslampe beim Einschalten |
DE19731168A1 (de) | 1997-07-21 | 1999-01-28 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Beleuchtungssystem |
WO2001020952A1 (fr) * | 1999-09-14 | 2001-03-22 | Mitsubishi Denki Kabushiki Kaisha | Dispositif de fonctionnement d'une lampe a decharge |
JP3742271B2 (ja) * | 2000-02-25 | 2006-02-01 | 株式会社小糸製作所 | 放電灯点灯回路 |
JP3385010B2 (ja) | 2000-05-26 | 2003-03-10 | 松下電器産業株式会社 | 無水銀高輝度放電ランプ点灯装置、および無水銀メタルハライドランプ |
JP2002093368A (ja) | 2000-07-14 | 2002-03-29 | Matsushita Electric Ind Co Ltd | 無水銀メタルハライドランプ |
JP3742302B2 (ja) * | 2001-01-31 | 2006-02-01 | 株式会社小糸製作所 | 放電灯点灯回路 |
JP3926991B2 (ja) * | 2001-02-14 | 2007-06-06 | 株式会社小糸製作所 | 放電灯点灯回路 |
JP4050474B2 (ja) * | 2001-02-26 | 2008-02-20 | 株式会社小糸製作所 | 放電灯点灯回路 |
JP4350933B2 (ja) * | 2002-03-29 | 2009-10-28 | パナソニック株式会社 | 高圧放電ランプの点灯方法及び高圧放電ランプ装置 |
-
2003
- 2003-06-30 DE DE10392144T patent/DE10392144B4/de not_active Expired - Fee Related
- 2003-06-30 WO PCT/JP2003/008300 patent/WO2004006632A1/ja active Application Filing
- 2003-06-30 JP JP2004519219A patent/JP4708020B2/ja not_active Expired - Lifetime
- 2003-06-30 US US10/488,086 patent/US7091673B2/en not_active Expired - Lifetime
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04272696A (ja) * | 1991-02-06 | 1992-09-29 | Mitsubishi Electric Corp | 放電灯点灯装置 |
JPH04342988A (ja) * | 1991-05-21 | 1992-11-30 | Mitsubishi Electric Corp | 放電灯点灯装置 |
JPH05205888A (ja) * | 1992-01-27 | 1993-08-13 | Mitsubishi Electric Corp | 高圧放電灯点灯装置 |
JPH0645081A (ja) * | 1992-07-27 | 1994-02-18 | Mitsubishi Electric Corp | 放電灯点灯装置 |
US5481163A (en) * | 1993-08-03 | 1996-01-02 | Mitsubishi Denki Kabushiki Kaisha | Discharge lamp current controlling circuit |
JPH07176388A (ja) * | 1993-12-21 | 1995-07-14 | Mitsubishi Electric Corp | 高圧放電灯点灯装置 |
JPH08222381A (ja) * | 1995-02-13 | 1996-08-30 | Matsushita Electric Ind Co Ltd | 放電灯点灯装置 |
JPH09237691A (ja) * | 1996-02-28 | 1997-09-09 | Koito Mfg Co Ltd | 放電灯点灯回路 |
JPH11317298A (ja) * | 1998-04-30 | 1999-11-16 | Toshiba Lighting & Technology Corp | 放電ランプの点灯装置 |
JP2003151787A (ja) * | 2001-08-29 | 2003-05-23 | Harison Toshiba Lighting Corp | 高圧放電ランプ点灯装置および自動車用ヘッドライト装置 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006019241A (ja) * | 2004-05-31 | 2006-01-19 | Stanley Electric Co Ltd | 放電灯点灯装置及び放電灯点灯方法 |
JP4624137B2 (ja) * | 2004-05-31 | 2011-02-02 | スタンレー電気株式会社 | 放電灯点灯装置及び放電灯点灯方法 |
JP2007005022A (ja) * | 2005-06-21 | 2007-01-11 | Mitsubishi Electric Corp | 放電灯点灯装置 |
JP2012508430A (ja) * | 2008-11-07 | 2012-04-05 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | ガス放電ランプに対する電力供給 |
Also Published As
Publication number | Publication date |
---|---|
DE10392144T5 (de) | 2004-07-29 |
US7091673B2 (en) | 2006-08-15 |
DE10392144B4 (de) | 2010-06-10 |
JPWO2004006632A1 (ja) | 2005-11-10 |
US20050088114A1 (en) | 2005-04-28 |
JP4708020B2 (ja) | 2011-06-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5142203A (en) | Lighting circuit for high-pressure discharge lamp for vehicles | |
JP3447776B2 (ja) | 放電灯点灯装置 | |
KR100583485B1 (ko) | 고압 방전 램프 점등 장치 및 자동차용 헤드라이트 장치 | |
US8395327B2 (en) | High-pressure discharge lamp lighting device and lighting fixture using the same | |
JP2008507821A (ja) | 動作モード間のスムースな遷移を提供するランプドライバのための制御ユニット | |
KR100611345B1 (ko) | 고압 금속 증기 방전 램프 점등 장치 및 차량용 전조등 장치 | |
JPH06203984A (ja) | 車両用放電灯点灯装置 | |
WO2004006632A1 (ja) | 放電灯点灯装置 | |
JP2006073352A (ja) | 車両用灯具の点灯制御回路 | |
US20100244741A1 (en) | Discharge lamp lighting device and lighting fixture | |
JP3521566B2 (ja) | 放電灯点灯装置 | |
JP4601558B2 (ja) | 車両用発光装置 | |
JP3080620B1 (ja) | 光源点灯装置及び方法 | |
JP3793339B2 (ja) | 高輝度放電灯の点灯装置 | |
JPH08222381A (ja) | 放電灯点灯装置 | |
JP5988197B2 (ja) | 放電灯点灯装置、この放電灯点灯装置を搭載した車両の前照灯及び車両 | |
JP2002110380A (ja) | 高輝度放電灯の点灯方法及び装置 | |
CN2753101Y (zh) | 高强度气体放电灯电子镇流器 | |
JPH0330186Y2 (ja) | ||
JP5895212B2 (ja) | 放電灯点灯装置、この放電灯点灯装置を搭載した車両の前照灯及び車両 | |
KR200355536Y1 (ko) | 메탈할라이드 램프의 순시재점등용 자기식 안정기 | |
JP2705292B2 (ja) | 車両用前照灯 | |
JPS62292549A (ja) | 車輌用前照灯 | |
JPH07122373A (ja) | 自動車用放電灯点灯回路装置 | |
JPH0390441A (ja) | 車輌用前照灯装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): DE JP US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2004519219 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 10488086 Country of ref document: US |
|
RET | De translation (de og part 6b) |
Ref document number: 10392144 Country of ref document: DE Date of ref document: 20040729 Kind code of ref document: P |
|
WWE | Wipo information: entry into national phase |
Ref document number: 10392144 Country of ref document: DE |
|
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8607 |