JP2007213923A - Discharge lamp lighting device and cumulative lighting time reset program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To selectively reset a discharge lamp lighting device the cumulative lighting time of which is to be reset, even if luminaires with discharge lamp lighting device provided with discharge lamps with different cumulative lighting time are arranged to one power supply switch. <P>SOLUTION: The discharge lamp lighting device 100 comprises a nonvolatile memory 3101 recording a cumulative lighting time of a discharge lamp; a power source ON/OF state detection circuit 340 detecting change from OFF to ON and change from ON to OFF of a power source; a discharge lamp state detection circuit 320 detecting whether the discharge lamp is installed or removed; and a microcomputer 3102 resetting the cumulative lighting time. The microcomputer 3102 resets the cumulative lighting time when the power source ON/OFF state detection circuit 340 detects 2n+1 (n is an integer of 1 or higher) state changes from OFF to ON for a preset given short time, and the discharge lamp state detection circuit 320 then detects removal of the discharge lamp and thereafter further detects installation of the discharge lamp. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a discharge lamp lighting device that controls the output of a discharge lamp according to the lighting time of an illumination load such as a discharge lamp. In particular, the present invention relates to a lighting device that suppresses a decrease in luminous flux with the lapse of lighting time of a discharge lamp.

  Conventionally, there has been known a lighting device that measures the cumulative lighting time of a discharge lamp and corrects the output power of the discharge lamp so as to suppress a decrease in luminous flux with the passage of the cumulative lighting time.

The principle conventionally known for these lighting devices is that a correction data table in which the cumulative lighting time of the discharge lamp is associated with the output power is prepared in advance, and the lighting device refers to this table so that the discharge lamp The power supplied to the is controlled. In a lighting fixture equipped with such a discharge lamp lighting device, when the discharge lamp is replaced with a new discharge lamp that does not deteriorate with time, the accumulated lighting time needs to be reset to an initial value. For example, Patent Document 1 (Japanese Patent Laid-Open No. 2000-223296) discloses a reset method.

  In Patent Document 1, the means for resetting the cumulative lighting time to an initial value detects that the power switch of the discharge lamp lighting device has been repeatedly turned on and off in a predetermined short time, and the number of repetitions is a predetermined number of times. Reset if exceeded.

  However, in the case of this method, for example, when a plurality of lighting fixtures branched from one common power switch are arranged, the following problems exist. That is, even if the cumulative lighting times of the discharge lamps mounted on the respective lighting fixtures are different, for example, a lighting fixture equipped with a discharge lamp lighting device mounted with a discharge lamp close to a new one and a discharge lamp near the end of life Even when both of the lighting fixtures equipped with the discharge lamp lighting device mounted with is arranged in a mixed manner, there is a problem that the cumulative lighting time of all the lighting fixtures is reset. Therefore, in FIG. 3 of Japanese Patent Laid-Open No. 2000-223296, as the number of times of turning on / off the power switch for enabling the reset, for example, three times when the cumulative lighting time reaches or exceeds the rated life, It is said that resetting the cumulative lighting time of all the discharge lamp lighting devices can be prevented by setting% to 4 times and 80% to 80% of the rated life time.

However, in the case of only such a constraint condition, there is a possibility that the accumulated lighting time of the discharge lamp lighting device that does not need to be reset may be reset against the user's intention.
JP 2000-223296 A

  The first object of the present invention is to make a reservation / registration in the discharge lamp lighting device for resetting the cumulative lighting time, and to record the reservation registration, and only when the replacement information of the discharge lamp is detected. An object of the present invention is to provide a discharge lamp lighting device that enables resetting the cumulative lighting time to an initial value. As a result, even when there is a mixture of lighting fixtures equipped with a discharge lamp lighting device in which a discharge lamp with a different cumulative lighting time is mounted on one power switch, only the discharge lamp lighting device for which the cumulative lighting time is desired to be reset. Can be selectively reserved and reset. That is, since the discharge lamp for which the accumulated lighting time is desired is reset after being reserved / registered, it is possible to solve the problem of being reset unintentionally.

  The second object of the present invention is to reserve and register the reset of the cumulative lighting time, and then to replace the old discharge lamp that is currently installed with a new discharge lamp in a simple and efficient manner, and It aims at providing the discharge lamp lighting device which alert | reports that reset was performed reliably.

  A third object of the present invention is to reset an old discharge lamp and a new lamp when the replacement work is not performed in a state where the input power supply is cut off when replacing the old discharge lamp with a new one. It is an object of the present invention to provide a discharge lamp lighting device in which the safety of the replacement work of the discharge lamp is further increased.

  A fourth object of the present invention is to provide a discharge lamp lighting device that reliably secures a control power supply for a microcomputer so that a write operation to an initial value of the microcomputer is reliably performed when the cumulative lighting time of a nonvolatile memory is reset. The purpose is to do.

The discharge lamp lighting device of the present invention is
In the discharge lamp lighting device that receives power supply from the power source and lights the discharge lamp and records the cumulative lighting time of the discharge lamp, and controls the light output of the discharge lamp according to the recorded cumulative lighting time.
A non-volatile memory that records the cumulative lighting time of the discharge lamp;
A power on / off state detection circuit for detecting respective state changes of off-on state change from off to on and on-off state change from on to off;
A discharge lamp state detection circuit for detecting whether the discharge lamp is attached or removed, and
A reset execution unit that resets the cumulative lighting time recorded in the nonvolatile memory,
The reset execution unit
After the power on / off state detection circuit detects a predetermined number of times set in advance for at least one of the on / off state change and the on / off state change of the power source for a predetermined short period of time,
When the discharge lamp state detection circuit detects removal of the discharge lamp and then detects mounting of the discharge lamp, the cumulative lighting time recorded in the nonvolatile memory is reset.

  According to the present invention, it is possible to provide a discharge lamp lighting device that does not reset the cumulative lighting time unintentionally. Select the discharge lamp lighting device for which you want to reset the cumulative lighting time even when there is a mixture of lighting fixtures with discharge lamp lighting devices with discharge lamps with different cumulative lighting times in one power switch. And can be reset.

Embodiment 1 FIG.
FIG. 1 is a circuit diagram showing a configuration of a discharge lamp lighting device 100 according to Embodiment 1 of the present invention. In FIG. 1, the discharge lamp lighting device 100 is supplied with AC power from an AC power source 1 via a power switch 20. In FIG. 1, in addition to the discharge lamp lighting device 100, a plurality of discharge lamp lighting devices 100a to 100n branched from one common power switch 20 are arranged. The configuration of the discharge lamp lighting devices 100 a to 100 n is exactly the same as that of the discharge lamp lighting device 100, and is connected to the AC power source 1 through a common power switch 20.

  As shown in FIG. 1, the discharge lamp lighting device 100 includes a diode bridge 2, a boost chopper circuit 200, a boost chopper control circuit 210, an inverter circuit 300, a discharge lamp load circuit 330, and a discharge lamp state detection circuit 320. And an inverter control circuit 310 and a power on / off state detection circuit 340. The inverter control circuit 310 includes a control output circuit 3101, a microcomputer 3102 (hereinafter referred to as a microcomputer, a reset execution unit), and a nonvolatile memory 3103 (first memory, second memory). The function of each of these elements will be described next.

  In the discharge lamp lighting device 100, the AC power supply 1 supplied via the power switch 20 is rectified by the diode bridge 2. The diode bridge 2 supplies a DC power source including a pulsating current component to the boost chopper circuit 200.

  The step-up chopper circuit 200 is controlled by a step-up chopper control circuit 210. The step-up chopper circuit 200 steps up and smoothes a DC power source including a pulsating current input from the diode bridge 2 by the choke coil 3, the switching element 5, the diode 4, and the capacitor 6, and supplies it to the inverter circuit 300. The inverter circuit 300 converts the DC power source boosted by the step-up chopper circuit 200 into a high-frequency current and supplies it to a discharge lamp load circuit 330 that is a load.

  Inverter circuit 300 is controlled by inverter control circuit 310. The inverter circuit 300 converts the DC voltage boosted by the boost chopper circuit 200 by the switching element 7 and the switching element 8 into a high frequency voltage. In addition, a resistor 13 is connected to the switching element 7 in parallel. The diodes connected in reverse parallel between the drains and sources of the switching elements 7 and 8 are not shown.

(1) The inverter control circuit 310 controls the inverter circuit 300. The microcomputer 3102 controls the inverter circuit 300 to turn on the discharge lamp 11, or records the cumulative lighting time of the discharge lamp 11 in the nonvolatile memory 3103, and executes various controls. In the first embodiment, the microcomputer 3102 inputs an output signal from the discharge lamp state detection circuit 320 and an output signal from the power on / off state detection circuit 340 and is recorded in the nonvolatile memory 3103 based on these output signals. A case where the cumulative lighting time of the discharge lamp is reset will be described. This will be described later with reference to FIGS.
(2) The non-volatile memory 3103 records information from the microcomputer 3102 in addition to recording the cumulative lighting time counted by the microcomputer 3102.
(3) The control output circuit 3101 drives the inverter circuit 300 based on the control signal output from the microcomputer 3102.

  The discharge lamp load circuit 330 includes a series circuit including a coupling capacitor 9, a choke coil 10 and a discharge lamp 11, a resistor 14 connected in parallel to the coupling capacitor 9, and a capacitor 12 connected in parallel to the discharge lamp 11. It consists of.

  The discharge lamp state detection circuit 320 detects whether the discharge lamp 11 is attached to or removed from the discharge lamp load circuit 330 and detects whether the discharge lamp 11 is normal or defective. The discharge lamp state detection circuit 320 outputs the detection result to the microcomputer 3102. A signal output when the discharge lamp state detection circuit 320 detects the mounting state of the discharge lamp may be referred to as “mounting detection information”. In addition, a signal that is output when the discharge lamp state detection circuit 320 detects a state where the discharge lamp is not mounted may be referred to as “no-load state detection information”. The discharge lamp state detection circuit 320 can detect the removal and attachment of the discharge lamp when the power switch 20 is ON, that is, when power is supplied from the AC power supply 1 (commercial power supply). The discharge lamp state detection circuit 320 detects the mounting state of the discharge lamp 11 by the current flowing through the filaments of the resistor 13, the resistor 14 and the discharge lamp 11 using the capacitor 6 as a power source. An output signal indicating removal is output to the microcomputer 3102. Further, the discharge lamp state detection circuit 320 detects a defective state of the discharge lamp 11 based on a rise in the voltage across the discharge lamp 11, the voltage of the filament of the discharge lamp, and the like, and an output signal indicating whether the discharge lamp 11 is normal or defective. Is output to the microcomputer 3102.

  The power on / off state detection circuit 340 detects the on / off state of the power switch 20 by detecting the output voltage of the diode bridge 2, and uses the detection result as an output signal (sometimes referred to as a detection signal). Output to. Note that the control drive power supply for the step-up chopper control circuit 210, the inverter control circuit 310, the discharge lamp state detection circuit 320, and the power on / off state detection circuit 340 is not shown.

  When the AC power supply 1 is turned on in the circuit of FIG. 1, the inverter circuit 300 is controlled by the inverter control circuit 310, and the discharge lamp 11 is lit. At this time, the inverter control circuit 310 outputs a “dimming control signal” for controlling the power supplied from the inverter circuit 300 to the discharge lamp load circuit 330 to the inverter circuit 300. The inverter circuit 300 performs dimming control on the electric power of the discharge lamp 11 in accordance with the “dimming control signal”. Here, “dimming control” refers to controlling the electric power of the discharge lamp 11 so as to change the light output of the discharge lamp 11.

  Further, the microcomputer 3102 of the inverter control circuit 310 measures the time during which the discharge lamp 11 is lit by this “dimming control signal”, and changes the dimming rate of the discharge lamp 11 according to the accumulated lighting time. . The cumulative lighting time is recorded in the nonvolatile memory 3103 by the microcomputer 3102 at an appropriate timing. Even when the AC power supply 1 is turned off and then turned on again, the microcomputer 3102 of the inverter control circuit 310 can continue to operate based on the cumulative lighting time when the latest AC power supply 1 recorded in the nonvolatile memory 3103 is off. .

2A to 2C are graphs showing the relationship between the cumulative lighting time of the discharge lamp 11 and the luminous flux of the discharge lamp 11 and the like.
In FIGS. 2A to 2C, the horizontal axis represents the cumulative lighting time.
FIG. 2A shows the relationship between the cumulative lighting time of the discharge lamp 11 and the luminous flux of the discharge lamp 11.
FIG. 2B shows the relationship between the cumulative lighting time of the discharge lamp 11 and the power characteristics of the discharge lamp 11.
FIG. 2C shows the relationship between the cumulative lighting time of the discharge lamp 11 and the light output of the discharge lamp 11.

  As shown in FIG. 2 (a), the luminous flux of the discharge lamp 11 is a cumulative lighting time due to a change over time of the discharge lamp 11 itself, contamination of the “discharge lamp 11 and the illuminating device attached” accompanying the change over time. Decreases with increasing.

  However, as shown in FIG. 2 (b), by increasing the power supplied to the discharge lamp 11 so as to compensate for the decrease in luminous flux with the passage of the cumulative lighting time, as shown in FIG. The light output can be made approximately constant with the lapse of the cumulative lighting time.

  Thus, the function of changing (increasing) the power of the discharge lamp 11 in accordance with the cumulative lighting time and correcting the decrease in the luminous flux of the discharge lamp 11 will be referred to as a “timer control function”.

  In a discharge lamp lighting device having a “timer control function”, when a mounted discharge lamp is replaced (replaced) with a new one, it is necessary to reset the cumulative lighting time to an initial value. As shown in FIG. 1, when a plurality of discharge lamp lighting devices 100, 100a,... 100n are connected from the AC power source 1 through a common power switch 20, they are replaced with new discharge lamps. Therefore, it is necessary to reset the accumulated lighting time by selecting only the discharge lamp lighting device. In particular, in places where a large number of lighting fixtures are installed on one floor, such as offices and stores, a replacement operation with a new discharge lamp requires a reset of the cumulative lighting time. It is required to selectively sort and easily reset. That is, there is a demand for a mechanism that can easily select a discharge lamp lighting device to which a discharge lamp to be replaced is attached and can reset only the cumulative lighting time of the selected discharge lamp lighting device.

  Hereinafter, in the first embodiment, when a plurality of discharge lamp lighting devices are connected via one power switch 20, a user (a discharge lamp replacement worker. Hereinafter, a replacement worker or a work A means that can easily and efficiently reset the accumulated lighting time will be described.

This will be described with reference to FIGS. 1 and 3 to 4.
FIG. 3 is a flowchart showing the operation of the discharge lamp lighting device 100.
FIG. 4 shows the flowchart of FIG. 3 in more detail. In FIG. 4, for example, S (step) 100 in FIG. 3 is more specifically divided into S100a to S100c. The same applies to the other steps in FIG.
FIG. 5 is a diagram showing the relationship between the main steps of FIG. 4 and the power switch 20.
Hereinafter, the description will be made with reference to FIGS. 4 and 5 in particular.

(Step S100)
The replacement operator repeatedly turns off the power switch 20 connected to the discharge lamp lighting device, which is to be reset for the cumulative lighting time, from off to on and from on to off in a predetermined short time. The operation from ON to ON (hereinafter referred to as “OFF / ON operation”) is executed an odd number of three or more times, and finally is turned on (S100a). Here, “within a predetermined short time” is, for example, “5 seconds”. In other words, the operator needs to perform an “off / on operation” an odd number of operations of 3 or more (finally on state) during “5 seconds”.
In this way, the operator performs, for example, three “off / on operations” (finally on state) during “5 seconds”
Or
During “5 seconds”, 5 “off / on operations” (finally on state)
Or
An operation such as performing “off / on operation” seven times (finally on state) during “5 seconds” is required. The “predetermined short time” can be set in advance by a program of the microcomputer 3102. Further, the number of “off / on operations” to be performed within a predetermined short time can be set in advance by the program of the microcomputer 3102.

  The power on / off state detection circuit 340 changes the power switch 20 from the off state to the on state (hereinafter referred to as “off / on state change”) and changes from the on state to the off state (hereinafter referred to as the on / off state). Change information (referred to as change) is detected (S100b). This change information (reset reservation request information) is taken into the microcomputer 3102 of the inverter control circuit 310. The microcomputer 3102 records this change information in the nonvolatile memory 3103 and counts it (S100c).

  In FIG. 3 (S101) or FIG. 4 (S101), n is an integer greater than 1, and the odd number is represented by 2n + 1 (change in state from ON to OFF).

  Further, the on / off state change from the on state to the off state of the power switch 20 is such that the inverter control circuit 310, the discharge lamp state detection circuit 320, and the power source on / off state after the voltage on the positive side of the diode bridge 2 becomes zero. This is possible by detecting the continuation of the zero state of the input voltage in the control drive power supply of the state detection circuit 340 and holding the voltage for a period required for writing to the nonvolatile memory. For example, this can be realized by providing an electrolytic capacitor having an appropriate capacity in the control drive power source of the power on / off state detection circuit 340.

(Step S101)
The microcomputer 3102 determines whether or not the number of “off / on state changes” counted during the predetermined time corresponds to the number set in advance in the program of the microcomputer 3102. If the microcomputer 3102 determines that “corresponds”, the flow proceeds to a Yes flow in S101. If the microcomputer 3102 determines that there is a “mismatch”, the process proceeds to No in S101.

(Step S110)
In the discharge lamp lighting device 100 that has reached step S110, it is reserved and registered in the nonvolatile memory 3103 of the inverter control circuit 310 that the discharge lamp 11 to be mounted is to be replaced (S110a). That is, the microcomputer 3102 records “reservation registration” of the accumulated lighting time in the non-volatile memory 3103 when it determines “Yes” in S101. Next, as shown in FIG. 5, when the discharge lamp 11 is removed by an operator while the power switch 20 is kept on (S110b), the discharge lamp state detection circuit 320 removes the discharge lamp 11. Is detected (S110c). Steps S110b and S110c are intended to detect that the discharge lamp load circuit 330 has become unloaded by removing the discharge lamp 11 whose cumulative lighting time has elapsed and the luminous flux has decreased for replacement.

(Step S111)
If the discharge lamp is unloaded, the process proceeds to Yes in S111, and if the discharge lamp is mounted, the process proceeds to No in S111. That is, in S111, the microcomputer 3102 determines whether or not the discharge lamp is mounted based on the output signal from the discharge lamp state detection circuit 320.

(Step S120)
When the replacement operator mounts the new discharge lamp 11 (S120a), the discharge lamp state detection circuit 320 detects the mounting of the new discharge lamp 11, and outputs mounting detection information (reset execution request information) to the microcomputer 3102. (S120b). This is intended to detect that a new discharge lamp 11 is mounted and the discharge lamp load circuit 330 is loaded.

(Step S121)
In S121, if the discharge lamp 11 has a load (that is, if the output signal from the discharge lamp state detection circuit 320 to the microcomputer 3102 is mounting detection information), the process proceeds to Yes in S121, and no load (ie, the discharge lamp state detection circuit). If the output signal from 320 to the microcomputer 3102 is no-load state detection information), the flow proceeds to No. That is, in S121, the microcomputer 3102 determines whether or not the discharge lamp is mounted based on the output signal from the discharge lamp state detection circuit 320.

(Step S130)
When the microcomputer 3102 determines that the discharge lamp is mounted based on the output signal from the discharge lamp state detection circuit 320, the reservation registration is recorded in the nonvolatile memory 3103 in S110a, so that it is recorded in the nonvolatile memory 3103. The accumulated lighting time is reset to the initial value (S130). It should be noted that a short cumulative lighting time relating to the discharge lamp before replacement recorded in a RAM area (not shown) provided in the microcomputer 3102 is also reset.

(Step S140)
The microcomputer 3102 notifies the replacement worker that the accumulated lighting time has been reset (S140). As the notification means, for example, the light output of the discharge lamp is increased or decreased at predetermined intervals (the discharge lamp is brightened or darkened), a buzzer (not shown) is sounded, or a small lamp such as a light emitting diode is used. Notification can be made by turning on or blinking.

  As described above, the operator resets the cumulative lighting time from among the discharge lamp lighting devices that have performed the reservation registration process (recording of the reset reservation registration in the non-volatile memory 3103) as a replacement target for a new discharge lamp. The cumulative lighting time can be reset simply by selecting the discharge lamp lighting device that performs the above and replacing the discharge lamp. The discharge lamp lighting device replaced with a new discharge lamp notifies that the reset has been completed.

  If the microcomputer 3102 determines No in steps S101, S111, and S121, the microcomputer 3102 proceeds to the next process without resetting the cumulative lighting time (S150).

In S101 described above, the microcomputer 3102 causes the power on / off state detection circuit 340 to change 2n + 1 times for the off / on state change, which is a state change from power off to on, for a predetermined short time. When it is determined that (n is an integer of 1 or more) has been detected (Yes in S101), reset reservation registration is performed (S110). Therefore, in S100a, the operator is requested to turn off / on the power switch 20 an odd number of times (three times or more) in a predetermined short time. However, this is an example, and is not limited to “2n + 1 times (n is an integer of 1 or more)”. For example, by setting in advance in a program for the microcomputer 3102, the microcomputer 3102 causes the power supply ON / OFF state detection circuit 340 to change the OFF / ON state of the power supply (AC power supply 1) within a predetermined short time. When a predetermined number of times set in advance for at least one of the on / off state change is detected, reset reservation registration may be performed.
(1) Specifically, as another example of “2n + 1 times (n is an integer equal to or greater than 1)”, the microcomputer 3102 indicates that the power on / off state detection circuit 340 is set in a predetermined short time. If it is determined that 2n times (where n is an integer equal to or greater than 1) has been detected for an on / off state change, which is a state change from power on to off, reset reservation registration may be performed.
(2) Alternatively, the microcomputer 3102 detects a preset number of off / on state changes and a preset number of times during a predetermined short period of time when the power on / off state detection circuit 340 is preset. If it is determined that a change in the on / off state of the device is detected, reset reservation registration may be performed.

  As described above, according to the first embodiment, in S101, by detecting that the microcomputer 3102 has operated the power switch OFF / ON state change count a predetermined number of times within a predetermined short time, A user (or a replacement operator) can reserve and register a discharge lamp lighting device to be replaced with a new discharge lamp as a replacement target.

  In addition, following the reservation registration, the cumulative lighting time must be reset by executing a series of steps from removal of the currently installed discharge lamp (S110b) to installation of a new discharge lamp (Yes in S121). It is possible to easily and efficiently execute and confirm the reset of the cumulative lighting time by selecting only a proper discharge lamp lighting device.

  That is, the reset process is divided into the reservation registration of the discharge lamp lighting device to be reset and the operation procedure for executing the reset confirmation, so that the cumulative lighting time until then is contrary to the intention of the user (replacement operator). It is possible to prevent resetting and to efficiently reset the cumulative lighting time of a large number of discharge lamp lighting devices by repeating a simple operation of removing an old discharge lamp and mounting a new discharge lamp. effective.

  Furthermore, since the notification that the cumulative lighting time has been reset is made, the reset completion can be confirmed. In addition, since the notification means increases or decreases the light output of the discharge lamp at a predetermined cycle, there is an effect that the notification means can be notified without adding a special notification means.

Embodiment 2. FIG.
FIG. 6 is a circuit diagram illustrating a configuration of the discharge lamp lighting device 101 according to the second embodiment. In FIG. 6, the same or corresponding components as those in FIG. The reference numerals of the inverter control circuit and the inverter circuit are changed from those in FIG. This is because the microcomputer 3112 of the discharge lamp lighting device 101 executes processing different from that of the microcomputer 3102 of the first embodiment, the inverter circuit 301 supplies high frequency power to the capacitor 24, and the like.

In the discharge lamp lighting device 100 of the first embodiment, the reset reservation registration and reset execution of the cumulative lighting time are as follows.
(1) Reservation Registration The microcomputer 3102 of the discharge lamp lighting device 100 detects the on / off operation of the power switch 20, and performs reservation registration (S110a) that the discharge lamp is a replacement target.
(2) Reset Execution When the power switch 20 continues to be turned on, the microcomputer 3102 executes reset of the cumulative lighting time when detecting the removal and installation of the discharge lamp in the case of reservation registration (S130).

In contrast, the discharge lamp lighting device 101 according to the second embodiment performs reservation registration and reset execution as follows, as shown in FIGS.
(1) Reservation Registration The microcomputer 3112 detects and registers reservations when the power switch 20 is turned on after the discharge lamp is removed while the power switch 20 is off (S200c in FIG. 8). .
(2) Execution of reset After the reservation registration, the microcomputer 3112 of the discharge lamp lighting device 101 turns off the power switch 20, attaches the discharge lamp in this off state, then turns on the power switch 20, and then When a predetermined on / off operation is performed on the power switch 20, the cumulative lighting time is reset (S240 in FIG. 8).

  The discharge lamp lighting device 101 of FIG. 6 includes the capacitor 21 and the diodes 22 and 23 in the inverter circuit 301 and is controlled by the inverter control circuit 311 with respect to the discharge lamp lighting device 101 of the first embodiment shown in FIG. A capacitor 24 (charging element) for supplying power is provided.

  In FIG. 6, one end of the capacitor 21 of the inverter circuit 301 of the discharge lamp lighting device 101 is connected to the connection point between the switching element 7 and the switching element 8, and the other end is connected to the cathode of the diode 22. The anode of the diode 22 is connected to the negative side of the boost chopper circuit 200. The anode of the diode 23 is connected to the connection point between the capacitor 21 and the diode 22. The cathode of the diode 23 is connected to the control power supply Vc311. A capacitor 24 is connected between the positive and negative terminals of the control power supply Vc311.

  The control power supply Vc 311 of the inverter control circuit 311 obtains a starting current from the step-up chopper circuit 200 through the current limiting element (not shown) to the capacitor 24, and from the connection point a between the capacitor 21 and the diode 22 to the diode 23. The high frequency current accompanying the oscillation of the inverter circuit 301 is supplied via

  The configuration of the discharge lamp lighting devices 101 a to 101 n is exactly the same as that of the discharge lamp lighting device 101, and is connected to the AC power source 1 through a common power switch 20.

  The control drive power supply for the boost chopper control circuit 210, the power on / off state detection circuit 340, and the discharge lamp state detection circuit 320 is not shown.

  As in the first embodiment, when the AC power supply 1 is turned on in the circuit of FIG. 6, the inverter circuit 301 is controlled by the inverter control circuit 311 and released as in the discharge lamp lighting device 100 of the first embodiment. The electric light 11 is turned on. At this time, the inverter control circuit 311 outputs a “dimming control signal” to the inverter circuit 301 so as to control the power supplied from the inverter circuit 301 to the discharge lamp load circuit 330. The inverter circuit 301 performs dimming control of the electric power of the discharge lamp 11 in accordance with the “dimming control signal”. This “dimming control signal” is generated by the microcomputer 3112 and is output to the inverter circuit 301 via the control output circuit. Further, the microcomputer 3112 of the inverter control circuit 311 measures the time during which the discharge lamp 11 is lit by this “dimming control signal”, and changes the dimming rate of the discharge lamp 11 according to the accumulated lighting time. . Further, the cumulative lighting time is recorded in the nonvolatile memory at an appropriate timing, and even when the AC power source 1 is turned off and then on again, the cumulative lighting time when the latest AC power source 1 recorded in the nonvolatile memory is off is stored. Can continue operation.

  As shown in FIG. 4 or FIG. 5, the replacement operation of the discharge lamp 11 with the new one in the first embodiment is performed with the old discharge lamp removed (S110b) and the new discharge lamp in the state where the power supply is kept on. Mounting (S120a) was performed.

  However, depending on the type and structure of the discharge lamp and the structure of the lighting fixture, there are cases where the discharge lamp cannot be removed and mounted with the power on. According to the discharge lamp lighting device 101 of the second embodiment, the discharge lamp can be removed and mounted, and the cumulative lighting time can be reset when the commercial power is off (S200a, S210d, and S240 in FIG. 9 described later). ). When a plurality of discharge lamp lighting devices are connected from the AC power source 1 (commercial power source) through a common power switch 20, only the discharge lamp lighting device in which the discharge lamp is replaced with a new one is selected. It is possible to reset the cumulative lighting time.

The operation of the discharge lamp lighting device 101 will be described with reference to FIGS. 7 to 9 in addition to FIG.
FIG. 7 is a flowchart showing the operation of the discharge lamp lighting device 101.
FIG. 8 shows the flowchart of FIG. 7 in more detail. In FIG. 8, for example, S200 of FIG. 7 is described more specifically as S200a to S200c.
FIG. 9 is a diagram showing the relationship between the main steps of FIG. 8 and the on / off of the power switch 20. Hereinafter, the description will be made with reference to FIGS. 8 and 9 in particular.

(Step S200)
The replacement worker removes the discharge lamp mounted on the discharge lamp lighting device to reset the cumulative lighting time in a state where the power switch 20 is turned off, and then turns on the power switch 20 after the removal (S200a). .

  The discharge lamp state detection circuit 320 detects the no-load normal state (extraction) of the discharge lamp (S200b). When detecting a no-load normal state, the discharge lamp state detection circuit 320 outputs discharge lamp no-load state detection information (reset reservation request information) to the microcomputer 3112 of the inverter control circuit 311. When the microcomputer 3112 receives the no-load state detection information (reset reservation request information), the microcomputer 3112 records reservation registration in the nonvolatile memory 3113 (S200c).

  The operation of S200a, that is, the power switch 20 is turned off, the discharge lamp is removed, and then the power switch 20 is turned on again in a no-load state, whereby the microcomputer 3112 is connected to the power switch 20 All of the lighting devices that have been operated as described above record a reservation registration in the nonvolatile memory 3113 of the inverter control circuit 311 that the discharge lamp 11 is a replacement target (reset target).

(Step S201)
If the reservation registration for resetting the cumulative lighting time is recorded in the nonvolatile memory 3113, the process proceeds to Yes in S201, and if not recorded, the process proceeds to No. That is, in S201, the microcomputer 3112 determines whether the reservation registration is recorded in the nonvolatile memory 3113.

(Step S210)
The replacement worker turns off the power switch 20 (210a). The power on / off state detection circuit 340 detects a state in which the power switch 20 is turned off (210b). This detection result is taken in from the power on / off state detection circuit 340 to the microcomputer 3112 of the inverter control circuit 311 and is recorded in the nonvolatile memory 3113 (210c).

  The replacement operator turns on all the discharge lamps that perform resetting of the cumulative lighting time among the discharge lamp lighting devices registered as replacement targets to be replaced with new discharge lamps with the power switch 20 turned off. A device is selected and a new discharge lamp is replaced (210d).

(Step S211)
If the information of the off state of the power switch 20 is recorded in the nonvolatile memory 3113, the process proceeds to Yes in S211. If not recorded, the process proceeds to No. That is, in S <b> 211, the microcomputer 3112 determines whether information on the off state of the power switch 20 is recorded in the nonvolatile memory 3113.

(Step S220)
The replacement worker turns on the power switch 20 (S220a). When the replacement operator turns on the power switch 20, the discharge lamp state detection circuit 320 detects that a new discharge lamp is mounted (S220b). Then, the microcomputer 3112 takes in the mounting detection information from the discharge lamp state detection circuit 320 and records the mounting detection information in the nonvolatile memory 3113 (S220c).

(Step S221)
If the discharge lamp is mounted, the process proceeds to Yes in S221, and if there is no load, the process proceeds to No. That is, in S221, the microcomputer 3112 determines whether or not the discharge lamp mounting detection information is recorded in the nonvolatile memory 3113.

(Step S230)
In the same operation as S100 to S101 in FIG. 3 of the first embodiment, the operator performs an even number of off / on state changes and finally turns off the power switch 20 within a predetermined short time. (S230a).
That is, the operator performs “on / off operation” for operating the power switch from the on state to the off state for a predetermined short time (for example, “5 seconds”) two or more times (the last is off). State) is required to do.
For example, the operator performs two “on / off operations” (finally off state) during “5 seconds”
Or
Perform “on / off operation” four times (finally off state) during “5 seconds”
Or
An operation such as performing “on / off operation” six times (finally in an off state) in “5 seconds” is required. The “on / off state change” from on to off of the power switch 20 in S230a or the “off / on state change” from off to on is detected as change information by the power on / off state detection circuit 340 ( S230b). The detection result is taken into the microcomputer 3112, recorded in the nonvolatile memory 3113, and counted (S230c).

  7 and 8, n is an integer larger than 1, and an even number is represented by 2n.

(Step S231)
When the number of “on / off state changes” counted by the microcomputer 3112 matches the number of times set in advance by the microcomputer program (an even number of 2 or more in the second embodiment), the process proceeds to Yes in S232, and there is a mismatch. If yes, go to No. When the OFF state of the last “ON / OFF state change” in the predetermined number of “ON / OFF state change” (reset execution request information) is detected, the process proceeds to Yes in S231. That is, in S231, the microcomputer 3112 determines whether or not the number of “on / off state changes” counted during the predetermined time corresponds to the number set in advance in the program of the microcomputer 3112.

(Step S240)
As shown in FIG. 9, the microcomputer 3112 of the inverter control circuit 311 calculates the cumulative lighting time recorded in the nonvolatile memory 3113 using the charge of the capacitor 24 of the control power supply Vc 311 as the driving power when the power switch 20 is in the OFF state. The initial value is reset (S240). The target for which the cumulative lighting time is reset is all the discharge lamp lighting devices replaced with new discharge lamps in step S210d.

  Note that the cumulative lighting time of the discharge lamp before replacement recorded in a RAM area (not shown) in the microcomputer 3112 is also reset.

  Normally, when the power supply on / off state detection circuit 340 detects that the AC power supply 1 is turned off, the inverter control circuit 311 sends the information to the inverter circuit 301 based on the detection information from the power supply on / off state detection circuit 340. The output of the drive signal is stopped. In step S240 in FIG. 8, the oscillation of the inverter circuit 301 is continuously continued for a predetermined period after the power switch 20 is turned off when the power switch 20 is turned off. Thereby, the oscillation operation by the inverter circuit 301 can be continued with the voltage charged in the capacitor 6 of the boost chopper circuit 200. Therefore, high-frequency power generated by the oscillation of the inverter circuit 301 during a predetermined period after the power is turned off can be supplied to the capacitor 24 (charging element) via the diode 23. As a result, the control power supply Vc 311 of the inverter control circuit 311 can be reliably ensured until the microcomputer 3112 finishes the reset operation of the nonvolatile memory 3113. That is, when the microcomputer 3112 resets the cumulative lighting time recorded in the nonvolatile memory 3113 in response to the power being turned off (S240), the microcomputer 3112 resets the cumulative lighting time with the power charged by the capacitor 24. It can be reliably reset by using it for operating power.

(Steps S250 and S260)
Then, when the replacement operator turns on the power switch 20 (S250), the notification means notifies the reset of the cumulative lighting time. The notification means is the same as in the first embodiment.

  If the microcomputer 3112 determines No in S201, S211, S221, and S231, the cumulative lighting time is not reset, and the process proceeds to S270, which is the next process.

  As described above, according to the second embodiment, when the power switch 20 is in the off state, the discharge lamp mounted so far is removed and the power switch 20 is turned on again (S200a), whereby the power switch 20 All of the discharge lamp lighting devices connected to, from which the discharge lamp is removed, can be reserved and registered in the nonvolatile memory 3113 of the inverter control circuit 311 as the replacement target of the discharge lamp 11.

  In S210d, it is a necessary condition for resetting the cumulative lighting time that the power switch 20 is turned off and a new discharge lamp is mounted. After the replacement with the new discharge lamp, the power switch 20 is operated a predetermined number of times within a predetermined short time in S230a. At the timing when the last OFF state is detected when detecting this operation, the microcomputer 3112 of the inverter control circuit 311 uses the charged charge of the capacitor 24 of the control power supply Vc311 as the drive power supply to the new discharge lamp in step S210d. For all the replaced discharge lamp lighting devices, the cumulative lighting time is collectively reset to the initial value (S240).

  In S231 described above, the microcomputer 3112 causes the power on / off state detection circuit 340 to change 2n times for the on / off state change which is a state change from power on to off in a predetermined short time. When it is determined that (n is an integer equal to or greater than 1) has been detected (Yes in S231), reset execution is performed in response to the power being off (S240). For this reason, in S230a, the operator is requested to turn on / off the power switch 20 an even number of times (two times or more) in a predetermined short time, and finally turn off the power switch 20. It was requested. However, this is an example, and is not limited to “2n times (n is an integer of 1 or more)”. For example, by setting in advance in the program for the microcomputer 3112, the microcomputer 3102 sets the power ON / OFF state change in advance for a predetermined short time in which the power ON / OFF state detection circuit 340 is preset in S 231. A predetermined odd number of times (for example, an odd number of 3 or more) is detected, and the power on / off state detection circuit 340 detects a change in power on / off state after the odd number of times has been detected. In response to this, the cumulative lighting time recorded in the nonvolatile memory 3113 may be reset.

  Since the discharge lamp lighting device 101 according to the second embodiment described above is divided into two operation procedures, ie, reservation registration of the discharge lamp lighting device for resetting the cumulative lighting time and execution of reset confirmation, the user ( It is possible to prevent resetting against the intention of the replacement operator) and to efficiently reset the cumulative lighting time of a large number of discharge lamp lighting devices.

  Further, it is a condition that the discharge lamp is removed and mounted while the power switch 20 is turned off (S200a, S210d in FIG. 9). For this reason, there exists an effect which can be reset, without being restrained by the kind of discharge lamp, or the restrictions of a lighting fixture.

  Furthermore, since the notification that the cumulative lighting time has been reset is made, the reset completion can be confirmed. In addition, since the notification means increases or decreases the light output of the discharge lamp at a predetermined cycle, there is an effect that the notification means can be notified without adding a special notification means.

  In addition, when the detection information of “on / off state change” from on to off of the input power source is obtained following the no-load state detection information of the discharge lamp, the inverter circuit 301 continues to oscillate for a predetermined period thereafter. Thus, there is an effect that the control power supply VC311 of the inverter control circuit 311 can be reliably secured until the microcomputer 3112 finishes the reset operation of the nonvolatile memory 3113.

Embodiment 3 FIG.
The discharge lamp lighting device according to the first embodiment and the second embodiment described above is divided into operation procedures of a reservation registration operation for resetting the cumulative lighting time and an execution operation for reset confirmation. The operation for resetting the cumulative lighting time by the discharge lamp lighting device described above is based on the operation of the microcomputer 3102 or the microcomputer 3112, and the cumulative lighting time reset program is executed by grasping the microcomputer operation as a program process. It can be in the form. The microcomputer 3102 in FIG. 1 or the microcomputer 3112 in FIG. 6 records the cumulative lighting time of the discharge lamp in its own non-volatile memory, or records predetermined information, but the non-volatile memory is the microcomputer 3102 or the microcomputer 3112. It is also possible to have a configuration provided in the interior. For example, the microcomputer 3102 or the microcomputer 3112 includes a first memory (not shown) that records the cumulative lighting time and a second memory (not shown) that records predetermined information. It doesn't matter. The microcomputer 3102 or the microcomputer 3112 records the cumulative lighting time of the discharge lamp in the first memory inside itself, and controls the light output of the discharge lamp according to the recorded cumulative lighting time.

  FIG. 10 is a flowchart showing a process of causing the microcomputer 3102 or the microcomputer 3112 to execute processing by a program.

  S301 is a process of inputting reset reservation request information for requesting a reservation for resetting the cumulative lighting time, and recording a reservation registration for resetting the cumulative lighting time in the second memory based on the input reset reservation request information.

  S302 is a process of resetting the cumulative lighting time recorded in the first memory when the reset execution request information for requesting execution of resetting the cumulative lighting time is input after the reservation registration is recorded in the second memory. It is.

  The program in the third embodiment causes the microcomputer to execute the reset confirmation process after the reservation registration process, thereby preventing the cumulative lighting time from being reset against the intention of the discharge lamp replacement operator. Can do.

  The discharge lamp lighting device described in the above embodiments includes a nonvolatile memory that records the cumulative lighting time of the discharge lamp, and controls the light output of the discharge lamp in accordance with the cumulative lighting time of the nonvolatile memory. In the discharge lamp lighting device including the control unit, the control unit is a state from the off state to the on state or from the on state to the off state within a predetermined short time of the input power supply when n is an integer of 1 or more. The number of change detections from the OFF state to the ON state is 2n + 1 detection information (continuing the input power ON state), and the discharge lamp is mounted after the no-load state detection information of the discharge lamp. The accumulated lighting time stored in the nonvolatile memory is reset to the initial value based on the detection information (Embodiment 1). In other words, the operation procedure is divided into reservation registration and reset confirmation execution procedure for the discharge lamp lighting device to be reset, so that it can be prevented from being reset against the intention of the user (replacement operator) and has been released from the past. There is an effect that the cumulative lighting time of a number of discharge lamp lighting devices can be reset efficiently by a simple operation of repeatedly removing the electric lamp and mounting a new discharge lamp.

  The discharge lamp lighting device described in the above embodiment includes a nonvolatile memory that records the cumulative lighting time of the discharge lamp, and controls the light output of the discharge lamp in accordance with the cumulative lighting time of the nonvolatile memory. In the discharge lamp lighting device including the control unit, the control unit turns off the input power source from the on state within a predetermined short time following the input power off state detection information after the no-load state detection information of the discharge lamp. The number of detections of the state change to the state is 2n times after the detection information of the state change is obtained (when the input power is off), and the accumulated lighting time stored in the nonvolatile memory is reset to the initial value. (Embodiment 2). That is, since it is divided into operation procedures of reservation registration and reset confirmation execution of the discharge lamp lighting device to be reset, it can be prevented from being reset against the intention of the user (exchange worker), and many There is an effect that the cumulative lighting time of the discharge lamp lighting device can be reset efficiently. Furthermore, since it is a condition that the discharge lamp is removed and mounted in a state where the power switch 20 is off, there is an effect that the discharge lamp can be reset without any kind of discharge lamp or restrictions on the lighting fixture.

  Since the discharge lamp lighting device described in the above embodiment has means for notifying that the cumulative lighting time has been reset, there is an effect that the completion of reset can be confirmed.

  In the discharge lamp lighting device described in the above embodiment, when the detection information of the state change from on to off of the input power source is obtained following the no-load state detection information of the discharge lamp, a predetermined period thereafter Since the inverter circuit continues to oscillate, the control power supply of the inverter control circuit can be reliably ensured until the microcomputer finishes the reset operation of the nonvolatile memory (second embodiment).

  In the discharge lamp lighting device described in the above embodiment, the means for notifying that the cumulative lighting time has been reset increases or decreases the light output of the discharge lamp at a predetermined cycle. There exists an effect which can alert | report without adding a means.

  In the above embodiments, the discharge lamp includes a nonvolatile memory that records the cumulative lighting time of the discharge lamp, and includes a control unit that controls the light output of the discharge lamp in accordance with the cumulative lighting time of the nonvolatile memory. In the lighting device, when n is an integer equal to or greater than 1, the number of detections of a change in the state of the input power supply from the off state to the on state within a predetermined short time is a state change from the off state to the on state. The number of times is the cumulative lighting stored in the non-volatile memory according to the detection information of the discharge lamp after the no-load state detection information of the discharge lamp following the detection information of 2n + 1 times (continuing the input power ON state) A discharge lamp lighting device that resets time to an initial value has been described.

  In the above embodiments, the discharge lamp includes a nonvolatile memory that records the cumulative lighting time of the discharge lamp, and includes a control unit that controls the light output of the discharge lamp in accordance with the cumulative lighting time of the nonvolatile memory. In the lighting device, the control unit obtains the detection information of the change in the state of the input power supply from on to off following the input power supply off state detection information after the no-load state detection information of the discharge lamp (input power supply). A discharge lamp lighting device has been described in which the cumulative lighting time stored in the non-volatile memory is reset to the initial value when in the off state.

  In the above embodiment, the discharge lamp lighting device having means for notifying that the cumulative lighting time has been reset has been described.

  In the above embodiment, when the detection information of the state change from ON to OFF of the input power source is obtained following the no-load state detection information of the discharge lamp, the inverter circuit continues to oscillate for a predetermined period thereafter. The discharge lamp lighting device as described above has been described.

  In the above embodiment, the control unit detects the no-load state detection information of the discharge lamp, the off-state detection information of the input power supply, and the discharge lamp mounting information in this order, and when n is an integer of 1 or more, What is claimed is: 1. A discharge lamp lighting device comprising: supplying high frequency power to an inverter control circuit for a predetermined period of time after the number of state change detections from an on state to an off state reaches 2n times explained.

  In the above embodiment, the control unit obtains the detection information of the state change from on to off of the input power source following the input power off state detection information after the no-load state detection information of the discharge lamp. , N is an integer equal to or greater than 1, at the timing when the number of detections of the state change of the input power supply from the on state to the off state within a predetermined short time reaches 2n times (when the input power source is in the off state), The discharge lamp lighting device in which the cumulative lighting time stored in the nonvolatile memory is reset to the initial value has been described.

  In the above embodiment, the discharge lamp lighting device has been described in which the means for notifying that the cumulative lighting time has been reset is configured to increase or decrease the light output of the discharge lamp at a predetermined cycle. Is.

1 is a circuit diagram of a discharge lamp lighting device 100 according to Embodiment 1. FIG. FIG. 3 is a characteristic diagram for explaining an operation principle of the discharge lamp lighting device 100 according to the first embodiment. FIG. 3 is a flowchart for explaining the operation of the discharge lamp lighting device 100 according to the first embodiment. FIG. 4 is a diagram showing FIG. 3 in the first embodiment in more detail. The figure which showed the content of FIG. 4 in Embodiment 1 paying attention to a power supply. FIG. 4 is a circuit diagram of a discharge lamp lighting device 101 according to Embodiment 2. The flowchart figure explaining operation | movement of the discharge lamp lighting device 101 in Embodiment 2. FIG. FIG. 8 is a diagram showing FIG. 7 in Embodiment 2 in more detail. The figure which showed the content of FIG. 8 in Embodiment 2 paying attention to a power supply. 10 is a flowchart showing processing of a program in the third embodiment.

Explanation of symbols

  Vc311 control power supply, 1 AC power supply, 2 diode bridge, 3 choke coil, 4 diode, 5 switching element, 6 capacitor, 7, 8 switching element, 9 coupling capacitor, 10 choke coil, 11 discharge lamp, 12, 15 capacitor, 13, 14 resistors, 20 power switches, 21 capacitors, 22, 23 diodes, 24 capacitors, 100, 100a to 100n discharge lamp lighting devices, 101, 101a to 101n discharge lamp lighting devices, 200 boost chopper circuits, 210 boost chopper control circuits 300, 301 Inverter circuit, 310, 311 Inverter control circuit, 320 Discharge lamp state detection circuit, 330 Discharge lamp load circuit, 340 Power on / off state detection circuit, 3101 Control output circuit, 3102 Mai Emissions, 3103 non-volatile memory, 3111 control output circuit, 3112 microcomputer, 3113 non-volatile memory.

Claims (12)

In the discharge lamp lighting device that receives power supply from the power source and lights the discharge lamp and records the cumulative lighting time of the discharge lamp, and controls the light output of the discharge lamp according to the recorded cumulative lighting time.
A non-volatile memory that records the cumulative lighting time of the discharge lamp;
A power on / off state detection circuit for detecting respective state changes of off-on state change from off to on and on-off state change from on to off;
A discharge lamp state detection circuit for detecting whether the discharge lamp is attached or removed, and
A reset execution unit that resets the cumulative lighting time recorded in the nonvolatile memory,
The reset execution unit
After the power on / off state detection circuit detects a predetermined number of times set in advance for at least one of the power on / off state change and the on / off state change for a predetermined short time,
A discharge lamp lighting device that resets the cumulative lighting time recorded in the non-volatile memory when the discharge lamp state detection circuit detects removal of the discharge lamp and then detects mounting of the discharge lamp. . The reset execution unit
After the power on / off state detection circuit detects 2n + 1 times (n is an integer equal to or greater than 1) as a predetermined number of times for a change in the power on / off state during a predetermined short time,
2. The accumulated lighting time recorded in the non-volatile memory is reset when the discharge lamp state detection circuit detects removal of the discharge lamp and then detects mounting of the discharge lamp. Discharge lamp lighting device. The reset execution unit
After the power on / off state detection circuit detects 2n times (n is an integer equal to or greater than 1) as a predetermined number of times for a change in the power on / off state during a predetermined short time,
2. The accumulated lighting time recorded in the non-volatile memory is reset when the discharge lamp state detection circuit detects removal of the discharge lamp and then detects mounting of the discharge lamp. Discharge lamp lighting device. The discharge lamp state detection circuit includes:
It is possible to detect whether the discharge lamp is attached or removed when the power is on,
The reset execution unit
After the power on / off state detection circuit detects a predetermined number of times set in advance for at least one of the power on / off state change and the on / off state change for a predetermined short time,
When the discharge lamp state detection circuit detects removal of the discharge lamp while the power supply continues to be on, and further detects the mounting of the discharge lamp, the cumulative lighting time recorded in the nonvolatile memory is reset. The discharge lamp lighting device according to claim 1. The reset execution unit
After the power on / off state detection circuit detects 2n + 1 times (n is an integer equal to or greater than 1) as a predetermined number of times for a change in the power on / off state during a predetermined short time,
When the discharge lamp state detection circuit detects removal of the discharge lamp while the power supply continues to be on, and further detects the mounting of the discharge lamp, the cumulative lighting time recorded in the nonvolatile memory is reset. The discharge lamp lighting device according to claim 4. In the discharge lamp lighting device that receives power supply from the power source and lights the discharge lamp and records the cumulative lighting time of the discharge lamp, and controls the light output of the discharge lamp according to the recorded cumulative lighting time.
A non-volatile memory that records the cumulative lighting time of the discharge lamp;
A power on / off state detection circuit for detecting respective state changes of off-on state change from off to on and on-off state change from on to off;
A discharge lamp state detection circuit capable of detecting whether the discharge lamp is attached or removed when the power is on; and
A reset execution unit that resets the cumulative lighting time recorded in the nonvolatile memory,
The reset execution unit
The discharge lamp state detection circuit detects the discharge of the discharge lamp when the power is turned on, and then the power of the discharge lamp changes from the on to the off and further from the off. The power supply ON / OFF state detection circuit detects a predetermined number of times set in advance for a change in the ON / OFF state of the power supply during a predetermined short period of time, and further detects the power ON / OFF state detection circuit. The accumulated lighting time recorded in the non-volatile memory is reset in response to the power state being off after detecting a predetermined number of changes in the on / off state of the power source. Electric light lighting device. The predetermined number of times set in advance for the on / off state change of the power supply is:
The discharge lamp lighting device according to claim 6, wherein 2n times (n is a natural number of 1 or more). The discharge lamp lighting device further includes:
An inverter circuit that generates high frequency power and supplies it to the discharge lamp, and generates high frequency power for a predetermined period after the power is turned off;
A charging element for charging power by inputting a part of high-frequency power generated by the inverter circuit in a predetermined period after the power source is turned off,
The reset execution unit
When resetting the cumulative lighting time recorded in the nonvolatile memory in response to the power supply being off, the power charged by the charging element is used as the operating power for resetting the cumulative lighting time. The discharge lamp lighting device according to claim 6 or 7. The reset execution unit
The discharge lamp lighting device according to claim 1, wherein when the cumulative lighting time recorded in the nonvolatile memory is reset, the resetting is notified. The reset execution unit
The discharge lamp lighting device according to claim 9, wherein the reset is notified by performing control to increase or decrease the light output of the discharge lamp. In the discharge lamp lighting device that receives power supply from the power source and lights the discharge lamp and records the cumulative lighting time of the discharge lamp, and controls the light output of the discharge lamp according to the recorded cumulative lighting time.
A first memory for recording a cumulative lighting time of the discharge lamp;
A second memory for recording predetermined information;
The reset reservation request information for requesting the reservation for the reset of the cumulative lighting time is input, and the reservation registration of the reset of the cumulative lighting time is recorded in the second memory based on the input reset reservation request information. A reset execution unit for inputting reset execution request information for requesting execution of reset,
The reset execution unit
When the reset execution request information is input after recording the reservation registration in the second memory, the cumulative lighting time recorded in the first memory is reset in response to the power being turned off. A discharge lamp lighting device characterized by. A cumulative lighting time reset program that records the cumulative lighting time of the discharge lamp in the first memory and causes the microcomputer that controls the light output of the discharge lamp to execute the following processing according to the cumulative lighting time recorded in the first memory ( 1) a process of inputting reset reservation request information for requesting a reservation for resetting the cumulative lighting time, and recording a reservation registration for resetting the cumulative lighting time in the second memory based on the input reset reservation request information;
(2) After the reservation registration is recorded in the second memory, when reset execution request information for requesting execution of resetting the cumulative lighting time is input, the cumulative lighting time recorded in the first memory is reset. Processing

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