JP2007005256A - Lighting system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting system capable of performing operation of each function for changing lighting state of a light source of a lighting apparatus with a simple construction and superior in execution property and of low cost. <P>SOLUTION: In the state that a main switch 1 is switched on, when an auxiliary switch 2 is operated once, the auxiliary switch 2 repeats conduction and cut-off of power supply to be supplied to a lighting device 3 plural times within a prescribed period; a control circuit 43 detects the conduction and cut-off state of power supply to be supplied to the lighting device 3 through a power supply circuit 44, and when the detected repeating operation of the conduction and cut-off of the power supply coincides with the repeating operation of the conduction and cut-off of the power supply by the operation of the auxiliary switch 2, the counted value of the accumulated lighting time of a lamp La is reset, the decline of flux of light due to deterioration of the lamp La is corrected according to this counted value. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a lighting system.

  In recent years, lighting devices that use highly efficient inverter circuits have been provided in the lighting field as energy saving needs have increased. Among them, the cumulative lighting time of the lamp is counted, and according to the count value of the cumulative lighting time. The discharge lamp with built-in illuminance correction function that reduces the power consumption while keeping the illuminance constant by changing the power supplied to the lamp by using the luminous flux decay characteristics of the discharge lamp and suppressing the excess luminous flux at the beginning of lamp lighting. An electric lighting device is provided. Lighting fixtures equipped with lighting devices that change the lighting state of the lamp with this illuminance correction function do not require a signal transmission line for lighting control, and only a power line needs to be connected. it can.

  Also, in this type of lighting fixture, it is necessary to reset the count value of the cumulative lamp lighting time to the initial value when the lamp is replaced. For this reason, a reset switch is provided in the main body of the lighting fixture. A function was provided to reset the count value of the lamp cumulative lighting time when was operated.

  However, since the luminaire is usually attached to the ceiling surface, this resetting work must be performed near the ceiling, which causes a problem in workability. In addition, when replacing lamps of all lighting fixtures with new ones on a floor where multiple lighting fixtures are installed like an office, the reset operation of the lamp cumulative lighting time must be performed for each lighting fixture. The workability was even worse.

  To solve this problem, for example, there is a lighting system that can reset the cumulative lamp operating time by repeatedly turning on and off the power switch within a predetermined time by turning the power switch on and off. There is no need to do this, and the cumulative lighting time of a plurality of lighting fixtures connected to the same power supply system can be collectively reset. (For example, refer to Patent Document 1).

  In addition, in order to improve the reliability of the reset operation of the lamp cumulative lighting time, a reset signal is transmitted using a wireless remote control or a transmission signal line, and the lighting fixture that receives the reset signal resets the lamp cumulative lighting time. There is also a system. (For example, refer to Patent Document 2).

In the above example, the lamp cumulative lighting time reset function has been described, but there are other lighting systems that have various functions for changing the lamp lighting state, such as a dimming function and an illuminance correction function. .
JP 2000-223296 A JP 2004-55424 A

  However, in the above-mentioned Patent Document 1, an instantaneous power failure due to an abnormality in the power supply environment is distinguished from a power cut-off due to a reset operation, and in order to prevent a malfunction, the number of times the power supply is turned on / off is increased when resetting, etc. The operation of the power switch needs to be complicated. For this reason, there is a risk that the user may confuse the operation method.

  Moreover, in the said patent document 2, since the means which receives a reset signal for every lighting fixture is required, a lighting fixture becomes expensive, Furthermore, when using a transmission signal line, wiring of a signal line is needed, and construction property There was a problem.

In addition, for various functions such as a dimming function and an illuminance correction function, the configuration required for operation is complicated and expensive, or there are problems in workability, etc.The present invention has been made in view of the above reasons. The purpose of the invention is to provide an illumination system that can operate each function for changing the lighting state of a light source of a lighting fixture with a simple configuration, is inexpensive, and has excellent workability.

  According to the first aspect of the present invention, at least one lighting fixture including a lighting device that turns on at least one light source, a main switch that conducts / cuts off power supply to the lighting device, an operation unit, and an input from the operation unit And an auxiliary switch that includes a switching determination unit that changes the state of the power supplied to the lighting device to a predetermined state according to the power supply, and the lighting device detects a state of the power supplied to the lighting device. And a lighting control means for changing the lighting state of the light source when the detected state change of the power source coincides with the predetermined state change due to the operation of the auxiliary switch.

  According to the present invention, the state of the power supplied to the lighting device is changed to a predetermined state by operating the auxiliary switch only once, and the lighting device that detects the change in the power state changes the lighting state of the light source. The operation of each function for changing the lighting state of the light source of the lighting fixture can be performed with a simple configuration, and an inexpensive and excellent workability lighting system can be provided.

  According to a second aspect of the present invention, in the first aspect, the auxiliary switch includes a contact for conducting / interrupting the power supply to the lighting device, and the switching determination unit is configured to operate the operation unit once. By turning on and off the contact point, the power supply to the lighting device is repeatedly turned on and off within a predetermined time, and the power detection means detects the power supply to the lighting device on and off. The lighting control means is characterized in that the lighting state of the light source is changed when the detected repeated operation of turning on / off of the power supply coincides with the repeated operation of turning on / off of the power by the operation of the auxiliary switch.

  According to this invention, the state of the power supplied to the lighting device can be changed to a predetermined state with a simple configuration.

  According to a third aspect of the present invention, in the first aspect of the present invention, the auxiliary switch includes a contact for conducting / interrupting power supply to the lighting device, and a power supply to the lighting device according to a phase angle of a power supply voltage when the contact is turned off. The switching determination unit repeats ON / OFF of the contact a plurality of times within a predetermined time when the operation unit is operated once, and the power detection unit The state of the power supplied to the lighting device when turned on and the state of the phase-controlled power supplied to the lighting device when the contact is turned off are detected, and the lighting control means detects the state change of the detected power, The lighting state of the light source is changed when it coincides with a change in the state of the power source due to the operation of the auxiliary switch.

  According to the present invention, since the phase control voltage is supplied to the lighting device via the phase control means even when the contact is off, it is possible to easily obtain the power necessary for generating the control power supply for the lighting device when the contact is off. be able to.

  According to a fourth aspect of the present invention, in the first aspect, the auxiliary switch includes a contact for conducting / interrupting power supply to the lighting device, and a diode for supplying half-wave rectification of the power to the lighting device when the contact is turned off. The switching determination unit repeats turning on and off of the contact a plurality of times within a predetermined time when the operation unit is operated once, and the power source detection means is turned on to the lighting device when the contact is turned on. The state of the supplied power and the state of the half-wave rectified power supplied to the lighting device when the contact is turned off are detected, and the lighting control means detects a change in the detected power state of the auxiliary switch. A feature is that the lighting state of the light source is changed when it coincides with the change in the state of the power supply due to the operation.

  According to the present invention, since the half-rectified voltage is supplied to the lighting device via the diode even when the contact is turned off, it is possible to easily obtain the power necessary for generating the control power supply for the lighting device when the contact is turned off. it can.

  According to a fifth aspect of the present invention, in the first aspect, the auxiliary switch includes means for changing an amplitude of a power supply voltage supplied to the lighting device according to an operation of the operation unit, and the switching determination unit includes When the operation unit is operated once, the amplitude of the power supply voltage is changed a plurality of times within a predetermined time, and the power supply detection means detects a change in the amplitude of the power supply voltage supplied to the lighting device, and the lighting control The means is characterized in that the lighting state of the light source is changed when the detected amplitude change of the power source coincides with the amplitude change of the power source due to the operation of the auxiliary switch.

  According to the present invention, a power source necessary for generating a control power source for a lighting device can always be easily obtained.

  According to a sixth aspect of the present invention, in any one of the first to fifth aspects, the auxiliary switch conducts / cuts off a power supply to the lighting unit and a timer unit that starts timing from the time when there is an input from the operation unit. And a switching judgment unit that turns on / off the contact of the relay based on a timing operation of a timer unit and an operation of the main switch.

  According to this invention, the state of the power supplied to the lighting device can be changed to a predetermined state with a simple configuration.

  A seventh aspect of the present invention provides the lighting device according to any one of the first to sixth aspects, wherein the lighting device counts a cumulative lighting time of the light source and corrects a light beam decrease due to deterioration of the light source according to a count value of the cumulative lighting time. And when the state change of the power source detected by the power source detection unit coincides with a predetermined state change due to the operation of the auxiliary switch, the count value of the cumulative lighting time of the light source is reset.

  According to the present invention, when the light source is replaced and a new light source is mounted, the count value of the cumulative lighting time of the light source can be easily reset by operating the auxiliary switch once, and the light flux can be appropriately reduced. Can be corrected.

  The invention of claim 8 is characterized in that, in claim 7, the auxiliary switch is provided with means for notifying by sound that the reset operation has been completed, in the vicinity of the operation section.

  According to the present invention, it is possible for a user who is away from whether or not the reset is completed to confirm by sound, and to improve the reliability of the system.

  According to a ninth aspect of the present invention, in any one of the first to sixth aspects, the light source is a discharge lamp, and the lighting device has a predetermined state in which the state change of the power source detected by the power source detecting means is caused by the operation of the auxiliary switch. When the change matches the change, the illuminance correction curve of the discharge lamp is switched to the illuminance correction curve corresponding to the operation of the auxiliary switch, and the deviation of the illuminance correction due to the difference in the light color of the discharge lamp is corrected.

  According to the present invention, the illuminance correction curve can be selected according to the light color of the discharge lamp used in the luminaire, and finer and optimal illuminance correction control can be performed.

  In a tenth aspect of the present invention, in any one of the first to sixth aspects, the light source is a discharge lamp, the lighting device is capable of supporting a plurality of discharge lamps, and a change in the state of the power source detected by the power source detecting means is detected. When the predetermined change in state due to the operation of the auxiliary switch coincides, the illuminance correction curve of the discharge lamp is switched to the illuminance correction curve corresponding to the operation of the auxiliary switch, and the deviation of the illuminance correction due to the difference in the type of the discharge lamp is changed. It is characterized by correcting.

  According to the present invention, the illuminance correction curve can be selected according to the type of the discharge lamp used in the luminaire, and finer optimal illuminance correction control can be performed.

  According to an eleventh aspect of the present invention, in any one of the first to sixth aspects, the light source is a discharge lamp, and the lighting device has a predetermined state in which the state change of the power detected by the power source detecting means is caused by the operation of the auxiliary switch. When the change coincides with the change, the illuminance correction value of the discharge lamp is switched to the illuminance correction value corresponding to the operation of the auxiliary switch.

  According to the present invention, the illuminance correction value can be selected according to the use environment of the luminaire, finer and optimal illuminance correction control can be performed, and the energy saving effect can be enhanced.

  As described above, in the present invention, the state of the power supplied to the lighting device is changed to a predetermined state by operating the auxiliary switch only once, and the lighting device that detects the change in the power state is the lighting state of the light source. Therefore, the operation of each function for changing the lighting state of the light source of the lighting fixture can be performed with a simple configuration, and there is an effect that it is possible to provide a lighting system that is inexpensive and excellent in workability.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 shows a configuration of a lighting system according to this embodiment. The lighting system includes a series circuit of a main switch 1 and an auxiliary switch 2 connected in series to one output of an AC power source Vac, a main switch 1 and an auxiliary switch. It is comprised from the lighting fixture 3 connected to AC power supply Vac via the switch 2. FIG.

  The lighting fixture 3 includes a lighting device 4 and a lamp La to which lighting power is supplied by the lighting device 4. FIG. 2 is an exploded perspective view of the luminaire 3, and the luminaire 3 includes a main body 31 and a reflector 32, and a lighting device 4, a power terminal block 33, and a lamp socket 34 are attached to the main body 31. ing. A power supply line for supplying power from the AC power supply Vac to the lighting fixture 3 is connected to the power supply terminal block 33, and supplies power to the lighting device 4 from the power supply terminal block 33. Lamp sockets 34 are attached to both ends of the main body 31 to hold the lamps La and La and supply power from the lighting device 4 to the lamps La and La. The main body 31 is provided with an attachment hole 35. A bolt 90 installed on the ceiling surface is inserted into the attachment hole 35, and the main body 31 is fixed to the ceiling surface with a washer 91 and a nut 92. Further, in order to improve the design and light distribution of the lighting fixture 3, the reflector 32 is attached to the main body 31 with the knob screw 93, and then the lamps La and La are attached to the lamp socket 34.

  The lighting device 4 includes a rectifier circuit 40, a chopper circuit 41, an inverter circuit 42, a control circuit 43, a power supply circuit 44, a no-load detection circuit 45, a counter 46, and a storage circuit 47, and an alternating current The power source Vac is connected through the main switch 1 and the auxiliary switch 2. A rectifier circuit 40 composed of a diode bridge performs full-wave rectification on the output of the AC power supply Vac input via the main switch 1 and the auxiliary switch 2, and the chopper circuit 41 includes a switching element. The rectified output is converted to a desired DC voltage by turning on and off, and the inverter circuit 42 includes a switching element, and the DC voltage output from the chopper circuit 41 is turned on and off at a high frequency by turning on and off the switching element. And is supplied to the lamp La for lighting.

  The control circuit 43 controls the switching operation of each switching element included in the chopper circuit 41 and the inverter circuit 42 according to each signal from the power supply circuit 44, the no-load detection circuit 45, the counter 46, and the storage circuit 47. Each output of the chopper circuit 41 and the inverter circuit 42 is controlled. For example, the dimming ratio of the lamp La is controlled by changing the switching frequency of the switching element of the inverter circuit 42.

  The no-load detection circuit 45 detects whether or not the lamp La, which is a load, is attached to the output of the lighting device 4, and detects a no-load state where the lamp La is not attached to the output of the lighting device 4. The control circuit 43 stops the switching operations of the chopper circuit 41 and the inverter circuit 42.

  In this lighting system, every time the main switch 1 is operated, the power line between the AC power source Vac and the lighting fixture 3 is alternately switched on and off, and the lighting and extinguishing of the lamp La are controlled.

  The control circuit 43 counts the period during which the power is supplied from the power supply circuit 44 and the no-load detection circuit 45 detects the load as the lamp cumulative lighting time, and stores the lamp cumulative lighting time in the storage circuit 47. Let me. This timing operation is performed based on the count value of the counter 46. When there is no power supply from the power supply circuit 44 or when the no-load detection circuit 45 detects a no-load state, the counting of the lamp cumulative lighting time is stopped.

  When the lamp La is a discharge lamp such as a fluorescent lamp, the luminous flux of the lamp La decreases with the usage time of the lamp La due to the deterioration of the phosphor applied in the discharge tube, and the brightness of the luminaire 3 gradually increases. It goes down. The control circuit 43 determines the dimming ratio based on the lamp cumulative lighting time, and controls the switching operation of the inverter circuit 42 so that the lamp La is lit at the dimming ratio. The determination of the dimming ratio may use a data table in which the lamp cumulative lighting time and the dimming ratio are associated with each other in the control circuit 43, or may be calculated by a predetermined arithmetic expression, depending on the lamp cumulative lighting time. The dimming ratio may be controlled to gradually increase so as to compensate for the decreasing luminous flux of the discharge lamp. In this way, this operation performed by the lighting device 4 with the light output being constant regardless of the cumulative lighting time of the lamp La is hereinafter referred to as an initial illuminance correction operation.

  The power supply circuit 44 detects the presence or absence of power supply from the AC power supply Vac, and at the same time supplies a control power supply Vcc for operating the control circuit 43 when the AC power supply Vac is supplied. When the control power supply Vcc is not supplied from the power supply circuit 44, the switching operations of the chopper circuit 41 and the inverter circuit 42 are stopped. The power supply circuit 44 has a capacity that allows the control circuit 43 and the storage circuit 47 to operate for a certain period of time even when the power supply from the AC power supply Vac is interrupted. This time must be longer than the time required for completing the data write operation. The control circuit 43 writes the time-measured cumulative lamp lighting time to the memory circuit 47 as needed, and even if the main switch 1 is turned off, the time-accumulated lamp cumulative lighting time is written to the memory circuit 47 depending on the capacity of the power supply circuit 44. Can hold. When the main switch 1 is turned on, the control circuit 43 reads the accumulated lamp lighting time from the storage circuit 47 and continues the initial illuminance correction operation based on the accumulated lamp lighting time.

  FIG. 3 shows a configuration example of the power supply circuit 44. The power supply circuit 44 includes a diode 44a, a resistor 44b, and a zener diode 44c connected between the high-voltage side output and the low-voltage side output (ground level) of the rectifier circuit 40. A circuit 44, a capacitor 44d connected in parallel to the Zener diode 44c, a series circuit of resistors 44e and 44f connected between the high-voltage side output of the rectifier circuit 40 and the ground level, and resistors 44g and 44h connected in parallel to the capacitor 44d. A series circuit and a comparator 44i in which the connection midpoint of the resistors 44e and 44f is connected to the non-inverting input terminal, and a connection midpoint of the resistors 44g and 44h is connected to the inverting input terminal, and the output terminal of the comparator 44i and the ground level A series circuit of a resistor 44j and a capacitor 44k connected therebetween, and a resistor 44l connected in parallel to the capacitor 44d A series circuit of 44m, the resistance 44l, connect the connection point 44m to the non-inverting input terminal, composed of a comparator 44n connected to the voltage across the capacitor 44k to the inverting input terminal.

  Hereinafter, the operation of the power supply circuit 44 will be described with reference to the waveform diagrams of the respective parts shown in FIGS. First, a predetermined DC voltage generated by the Zener diode 44c from the full-wave rectified output of the rectifier circuit 40 is smoothed by the capacitor 44d and supplied to the control circuit 43 and the storage circuit 47 as the control power source Vcc, and the resistors 44g, The voltage is divided by 44h and resistors 44l and 44m to generate reference voltages Vref1 and Vref2, respectively, and input to comparators 44i and 44n.

  If the contact 24 of the relay of the auxiliary switch 2 is in the ON state, the rectifier circuit 40 to which the AC power source Vac (FIG. 4A) is input via the main switch 1 and the auxiliary switch 2 outputs the full-wave rectified voltage. The comparator 44i compares the detection voltage Vs1 obtained by dividing the full-wave rectified voltage by the resistors 44e and 44f with the reference voltage Vref1 (FIG. 4 (d)). The output of the comparator 44i is that the detection voltage Vs1 is higher than the reference voltage Vref1. It becomes a rectangular wave signal synchronized with the phase of the AC power supply Vac that is at the H level only for a large period (FIG. 4 (e)). The comparator 44n compares the reference voltage Vref2 with a substantially H level voltage Vs2 obtained by smoothing the output of the comparator 44i with the resistor 44j and the capacitor 44k (FIG. 4 (f)), and outputs an L level signal (FIG. 4 ( g)).

  Next, when the output of the switching determination unit 22 of the auxiliary switch 2 becomes H level (FIG. 4B) and the relay contact 24 is turned off, the power supply to the lighting device 4 is cut off and the input voltage is turned off. Becomes zero (FIG. 4C), the detection voltages Vs1 and Vs2 also become zero, and the comparator 44n outputs an H level signal (FIG. 4F). When the relay contact 24 is turned on, the comparator 44n outputs an L level signal again.

  Thus, the comparator 44 n can detect whether the power supply from the AC power supply Vac is in a conductive state or a cut-off state, and can transmit the power supply state to the control circuit 43.

  Even when the power supply from the AC power supply Vac is cut off by using a large capacity component such as an aluminum electrolytic capacitor as the capacitor 44d, the control power supply Vcc is supplied to the control circuit 43 and the storage circuit 47. The required voltage can be maintained for a predetermined period.

  The storage circuit 47 also stores the reset condition number Nr for resetting the lamp cumulative lighting time when the lamp La is replaced and a new lamp is mounted, together with the lamp cumulative lighting time. The case where the lamp cumulative lighting time is reset by the existing main switch 1 will be described with reference to FIGS.

  First, in step 1 shown in FIG. 5A, when the main switch 1 is turned on (time t0) in a state where the lamp La is attached to the lighting device 4, the control circuit 43 reads the accumulated lamp lighting time from the storage circuit 47. At the same time, the reset condition count Nr is read. At this time, it is assumed that “0” is written in the reset condition number Nr. Since the reset condition count Nr is “0”, the control circuit 43 starts the above-described initial illuminance correction operation and measures the power supply time Ton1 during which power is supplied to the control circuit 43. The power supply time Ton1 is also counted by the counter 46 in the same manner as the lamp cumulative lighting time. When the power supply time Ton1 reaches a predetermined time T1 set in the control circuit 43 in advance, the power supply time Ton1 is counted. Timekeeping is stopped and the initial illuminance correction operation is continued after a predetermined time T1. When the main switch 1 is turned off (time t 1), the reset condition count Nr = “0” is written in the memory circuit 47. Even if the power supply to the power supply circuit 44 is lost, the control circuit 43 and the storage circuit 47 can continue to operate for a certain period of time due to the capacity of the power supply circuit 44.

  Next, as shown in step 2 of FIG. 5B, when the main switch 1 is turned off before the power supply time Ton1 reaches the predetermined time T1 (time t1 ′), the control circuit 43 sets the reset condition number Nr as “1” is written to the memory circuit 47. When the main switch 1 is turned on again (time t2), the control circuit 43 reads the reset condition count Nr “1” from the storage circuit 47 together with the cumulative lamp lighting time, starts the initial illuminance correction operation, and The power supply time Ton2 during which power is supplied is counted. When the power supply time Ton2 reaches the predetermined time T2 set in the control circuit 43 in advance, the power supply time Ton2 is stopped, and the initial illuminance correction operation is continued after the predetermined time T2. When the main switch 1 is turned off (time t3), the reset condition count Nr = “0” is written in the memory circuit 47.

  Next, as shown in step 3 of FIG. 5C, when the main switch 1 is turned off before the power supply time Ton2 reaches the predetermined time T2 (time t3 ′), the control circuit 43 sets the reset condition number Nr as “2” is written to the memory circuit 47. When the main switch 1 is turned on again (time t4), the control circuit 43 reads the reset condition count Nr “2” together with the lamp cumulative lighting time from the storage circuit 47, starts the initial illuminance correction operation, and The power supply time Ton3 during which power is supplied is counted. When the power supply time Ton3 reaches the predetermined time T3 preset in the control circuit 43, the power supply time Ton3 is stopped, and the initial illuminance correction operation is continued after the predetermined time T3. When the main switch 1 is turned off (time t5), the reset condition count Nr = “0” is written in the memory circuit 47.

  Next, as shown in step 4 of FIG. 5D, when the main switch 1 is turned off before the power supply time Ton3 reaches the predetermined time T3 (time t5 ′), the control circuit 43 sets the reset condition number Nr as “3” is written in the memory circuit 47. When the main switch 1 is turned on again (time t6), the control circuit 43 reads the reset condition count Nr “3” from the storage circuit 47 together with the lamp cumulative lighting time. Here, the control circuit 43 sets the number of reset establishment conditions to “3” in advance, and matches the read number of reset conditions Nr. Therefore, the control circuit 43 resets the accumulated lamp lighting time and the number of reset conditions Nr to “0” and writes them in the memory circuit 47 (time tr1).

  As described above, the lamp main lighting time can be reset by turning on / off the existing main switch 1 and the control circuit 43 counts on / off of the power supply, but the main switch 1 is turned on / off. The number of operation repetitions, timing, etc. become complicated.

  However, in the present embodiment, the lamp cumulative lighting time can be easily reset using the auxiliary switch 2 and will be described below.

  As shown in FIG. 6, the auxiliary switch 2 includes an operation unit 21, a switching determination unit 22, a timer unit 23, and a relay provided with a contact 24, and the contact 24 of the relay is an AC power supply Vac-lighting fixture. 3 is inserted into the power line between the three. Further, as shown in FIG. 7, it is composed of a push-type switch in which the operation unit 21 is exposed from the plate P, and the switching determination unit 22 and the timer unit 23 can be easily configured by using a general-purpose 4-bit microcomputer or the like. it can. Then, the operation shown in FIG. 8 is normally performed by keeping the relay contact 24 in the ON state and pressing the operation unit 21.

  First, when the operation unit 21 is pressed and turned on once (step S1), the switching determination unit 22 causes the timer unit 23 to start a timekeeping operation (step S2), and the relay contact 24 is turned off (step S3). . The timer unit 23 measures the time from when the operation unit 21 is turned on, and when the predetermined time Ta has elapsed (step S4), the timer contact 23 turns on the relay contact 24 (step S5). Further, the time counting operation is continued, and when the time counting time has passed a predetermined time Tb (> Ta) (step S6), the switching determination unit 22 resets the time counting operation of the timer unit 23 (step S7), and the internal counter is reset. One is counted up (step S8). Then, this count value is determined (step S9), and if the count value is less than 4, the process returns to step S2 to restart the time counting operation of the timer unit 23, and the same ON / OFF operation of the contact 24 is repeated. If the count value is 4, the counter is reset (step S10), and the process returns to step S1 and waits until the operation unit 21 is turned on. That is, the auxiliary switch 2 can switch the relay contact 24 on and off four times by simply turning on the operation unit 21 once.

  When the predetermined times T1, T2, and T3 in FIGS. 5A to 5D are set to values longer than the power supply time Tb-Ta set by the auxiliary switch 2, FIGS. As shown in (2), the ON / OFF operation of the auxiliary switch 2 is performed by repeating the ON / OFF operation of the auxiliary switch 2 as the auxiliary switch 2 is turned ON / OFF and the control circuit 43 counts the ON / OFF of the power supply. The lamp cumulative lighting time can be reset when it coincides with the repeated operation of turning on / off the power source.

  That is, when the operation unit 21 of the auxiliary switch 2 is operated with the main switch 1 turned on, the relay contact 24 inserted in the power supply line between the AC power supply Vac and the lighting fixture 3 cycles the off state at the time Ta. Since the power supply time Tb-Ta at this time is shorter than the predetermined times T1, T2 and T3 in FIGS. 5A to 5D, the power supply time Tb-Ta at this time is shorter than the predetermined time T1, T2 and T3 in FIG. The control circuit 43 reads the reset condition count Nr “3” from the storage circuit 47 together with the lamp cumulative lighting time. Since the reset condition count Nr matches the preset reset establishment condition count “3”, the control circuit 43 resets the lamp cumulative lighting time from A time to 0 hour and the reset condition count Nr is also “0”. To the memory circuit 47 (time tr2).

  Thus, the lamp cumulative lighting time can be easily reset by operating the auxiliary switch 2 only once.

  Although the AC power supply Vac is used in the present embodiment, it may be a DC power supply. Further, the main switch 1 and the auxiliary switch 2 are configured as single-sided switches. Obtainable.

  When the AC power supply Vac inlet, the auxiliary switch 2 and the lighting fixture 3 are separated from each other, the relay of the auxiliary switch 2 is arranged in the vicinity of the lighting fixture 3 and the switching determination unit 22 and the relay are signaled. When connected by a wire, the wiring from the inlet of the AC power supply Vac to the lighting fixture 3 can be shortened, the workability is improved, and the lighting fixture 3 can be remotely operated by the auxiliary switch 2.

  Furthermore, although the lighting device 4 includes a chopper circuit 41 and an inverter circuit 42, the present embodiment is based on the reset operation of the lamp cumulative lighting time, and the lighting device 4 capable of dimming the lamp La. If it is, the same effect can be acquired.

  Further, for the reset operation of the lamp cumulative lighting time, the auxiliary switch 2 is turned on / off repeatedly four times and the reset establishment condition number is set to three. However, the number is not limited to these.

(Embodiment 2)
10 and 11 show the configurations of the main switch 1 and the auxiliary switch 2 used in the illumination system of the present embodiment, and the other configurations are the same as those of the first embodiment, and a description thereof will be omitted.

  In the present embodiment, the main switch 1 is provided in the vicinity of the operation unit 21 of the auxiliary switch 2, and the output of the main switch 1 is also connected to the switching determination unit 22. The switching determination unit 22 also determines the state of the main switch 1. When the main switch 1 is on, the relay contact 24 is turned on. When the main switch 1 is off, the relay contact 24 is turned off. Control. Therefore, the power supply to the lighting fixture 3 can be switched between power supply and interruption by the relay contact 24, and the current flowing from the AC power source Vac to the lighting fixture 3 does not flow to the contact of the main switch 1. A contact with a large rated current is not required. In other words, the auxiliary switch 2 only needs to have a contact with a large rated current, and the main switch 1 can be configured at low cost.

  Further, if the relay is arranged in the vicinity of the lighting fixture 3 as in the first embodiment, the lighting fixture 3 can be remotely operated with a simple configuration.

(Embodiment 3)
The operation of the auxiliary switch 2 used in the illumination system of this embodiment is shown in FIG. The configuration of the auxiliary switch 2 is the same as that of the second embodiment, and the configuration of the lighting fixture 3 is the same as that of the first embodiment, and the description thereof is omitted.

  In the first and second embodiments, when the main switch 1 is operated during the operation period of the auxiliary switch 2, the reset operation of the lamp lighting cumulative time by the auxiliary switch 2 may be interrupted and may not be reset. Therefore, in the present embodiment, the on / off operation by the main switch 1 is prohibited during the operation of the auxiliary switch 2 so that the operation of the auxiliary switch 2 is performed reliably.

  In the configuration of the auxiliary switch 2 shown in FIG. 11, when the operation part 21 of the auxiliary switch 2 is operated while the main switch 1 is on, the relay contact 24 is repeatedly turned on / off to turn on / off the power supply. However, the switching determination unit 22 may control the relay contact 24 while ignoring the input by operating the main switch 1 during the operation period.

  As shown in FIG. 12, in the auxiliary switch 2 of the present embodiment, first, the switching determination unit 22 determines the operation of the operation unit 21 (step S20), and when the operation unit 21 is pressed and turned on once, the main switch 1 is turned on. Is determined to be on (step S21), and if the main switch 1 is on, the switching determination unit 22 causes the timer unit 23 to start a timekeeping operation (step S22), and the relay contact 24 is turned on. An off state is set (step S23). The timer unit 23 measures the time from when the operation unit 21 is turned on, and when the predetermined time Ta has elapsed (step S24), the timer contact 23 turns on the relay contact 24 (step S25). Further, the time counting operation is continued, and when a predetermined time Tb (> Ta) elapses (step S26), the switching determination unit 22 resets the time counting operation of the timer unit 23 (step S27), and sets the internal counter. One is counted up (step S28). Then, this count value is determined (step S29). If the count value is less than 4, the process returns to step S22 to restart the timer 23 and repeats the same operation as described above. If there is, the counter is reset (step S30).

  If the counter is reset in step S30 or if there is no input from the operation unit 21 in step S20, it is determined whether or not the main switch 1 is in an on state (step S31). If the main switch 1 is off in step S21 or step S31, the relay contact 24 is turned off. If the main switch 1 is on in step S31, the relay contact 24 is turned on, and step S20 is performed. It returns to and waits until the operation part 21 is turned on.

  With the above operation, once the power supply conduction / shutoff operation by the auxiliary switch 2 is started, the state of the main switch 1 is not judged until the operation is completed, so the main switch 1 is turned off during this operation. Even if the operation is performed, the conduction / cutoff operation of the power supply by the relay contact 24 is not interrupted, and the relay contact 24 is turned off after the conduction / cutoff operation is completed.

  Therefore, if the auxiliary switch 2 is operated, the power supply conduction / shut-off operation is reliably transmitted to the lighting device 4, so that the lamp cumulative lighting time can be reliably reset.

(Embodiment 4)
In the illumination system of this embodiment, the lamp cumulative lighting time resetting unit functions only in the case where the lamp cumulative lighting time exceeds the rated time of the lamp La in the first embodiment. This is the same as 1 and will not be described.

  First, when the main switch 1 is turned on in a state where the lamp La is attached to the lighting device 4, the control circuit 43 reads the accumulated lamp lighting time from the storage circuit 47. If the lamp cumulative lighting time is shorter than the preset rated time of the lamp La, thereafter, the lamp cumulative lighting time reset operation is not performed, and only the initial illuminance correction operation is performed.

  If the lamp cumulative lighting time is longer than the rated time of the lamp La, the control circuit 43 reads the reset condition number Nr from the storage circuit 47. At this time, it is assumed that “0” is written in the reset condition number Nr. Thereafter, the lamp cumulative lighting time reset operation similar to that of the first embodiment is performed (see FIG. 5).

  Therefore, if the lamp cumulative lighting time is shorter than the preset rated time of the lamp La, the lamp cumulative lighting time is not reset. That is, it is not unconditionally reset regardless of the lamp cumulative lighting time. For example, when power is supplied to a plurality of lighting fixtures 3 through one auxiliary switch 2, only the lamp cumulative lighting time of the lighting fixture 3 to which the lamp La exceeding the rated life is attached is reset. In addition, since the lamp cumulative lighting time is not reset for the lighting fixture 3 to which the new lamp La is attached, the user can use all the lamps La until the rated life, and the cost required for the lamps La is reduced. be able to.

  In the second and third embodiments, the same effect can be obtained if the same configuration is used.

(Embodiment 5)
FIG. 13 shows the configuration of the auxiliary switch 2 used in the lighting system of the present embodiment, in which the notification unit 25 is provided in the configuration of the first to fourth embodiments, and the other configurations are the same as those of the first to fourth embodiments. It is the same and description is omitted.

  In the auxiliary switch 2 of the present embodiment, a notification unit 25 is disposed in the vicinity of the operation unit 21, and the notification unit 25 is controlled by the switching determination unit 22. The notification unit 25 is a monitor lamp using, for example, an LED, and the switching determination unit 22 supplies a current to the LED serving as the notification unit 25 when the reset operation of the lamp cumulative lighting time by the operation of the auxiliary switch 2 is completed. It is turned on for a predetermined time to visually notify that the reset operation has been completed.

  By adopting such a configuration, for example, even when the operation of the main switch 1 is mistaken or when the power supply to the lighting fixture 3 is repeatedly interrupted instantaneously due to an abnormality in the power supply environment or the like, the notification unit 25 The LED can confirm whether or not the resetting of the lamp cumulative lighting time has been completed, and the reliability of the system can be improved.

  14 shows the appearance of the auxiliary switch 2 of the present embodiment when the main switch 1 is provided in the vicinity of the operation unit 21 of the auxiliary switch 2 as in the second embodiment.

(Embodiment 6)
In the present embodiment, the notification unit 25 of the fifth embodiment is configured by an audio device such as a buzzer. When a monitor lamp such as an LED is used, it is difficult to check the monitor lamp when the user is away from the auxiliary switch 2. Therefore, a sound device such as a buzzer is employed instead of the monitor lamp, and the switching determination unit 22 provides a signal to sound the buzzer when the reset operation of the lamp cumulative lighting time by the operation of the auxiliary switch 2 is completed. And is sounded for a predetermined time to notify that the reset operation is completed.

  Therefore, since the completion of the reset operation of the lamp cumulative lighting time by the operation of the auxiliary switch 2 can be confirmed by sound, it can be notified to the user away from the auxiliary switch 2.

(Embodiment 7)
In the first to sixth embodiments, the operation of the auxiliary switch 2 is used for resetting the lamp cumulative lighting time. However, the brightness of the lighting fixture 3 can be changed in a plurality of stages according to the operation of the auxiliary switch. Note that the block configuration of the illumination system of the present embodiment is the same as that of the first embodiment, and a description thereof will be omitted.

  In the present embodiment, as shown in FIG. 15, the operation unit 21 of the auxiliary switch 2 is configured by a 3-position rotary switch and is provided in the vicinity of the main switch 1, and the switching determination unit 22 rotates the operation unit 21. In response to the position of the operation unit 21, the number of ON / OFF of the contact 24 of the relay is set to be different from each other, and the control circuit 44 of the lighting device 4 detects the number of times the power supply is turned on / off. If the power supplied to the lamp La is changed according to the number of times of detection, the brightness of the luminaire 3 can be changed according to the operation of the auxiliary switch 2.

  The auxiliary switch 2 normally performs the operation shown in FIG. 16 by turning the operation unit 21 while the relay contact 24 is turned on. Assuming that the position of the operation unit 21 is X1, X2, and X3 from the right, all lighting (100% lighting) is performed at position X1, dimming 1 (50% dimming) at position X2, and dimming 2 (25% dimming) at position X3. (Light). The switching determination unit 22 includes a memory therein, and stores an instruction value corresponding to the position of the operation unit 21 in the memory. Specifically, “3” is stored as an instruction value when all lights are on, “2” when dimming is 1, “1” is stored when dimming, and “0” is stored as an initial value when power is turned on. Keep it.

  Then, the switching determination unit 22 confirms the current instruction value of the operation unit 21 (step S40), compares the current instruction value with the instruction value stored in the memory, and changes to the position of the operation unit 21. It is determined whether or not there has been (step S41). If the current instruction value is different from the instruction value stored in the memory, the brightness of the luminaire 3 is changed as follows, assuming that the position of the operation unit 21 has been changed. In addition, since “0” is stored as an instruction value in the memory when the power is turned on, the instruction value does not match the instruction value of the operation unit 21 and the brightness change process of the lighting fixture 3 is always executed.

  If the changed position is X1, the switching determination unit 22 determines that all the lights are on (step S42), and sets the relay contact 24 on / off frequency Na to 3 (step S43). If the changed position is X2, it is determined that the dimming is 50% (step S44), and the ON / OFF count Na of the contact 24 of the relay is set to 4 (step S45). If the changed position is X3, it is determined that the dimming is 25% (step S46), and the ON / OFF frequency Na of the relay contact 24 is set to 5 (step S47).

  Then, the switching determination unit 22 causes the timer unit 23 to start a timekeeping operation (step S48), and the relay contact 24 is turned off (step S49). The timer unit 23 measures the time since the position of the operation unit 21 is changed, and when the measured time has elapsed a predetermined time Ta (step S50), the timer contact 23 turns on the relay contact 24 (step S51). Further, the time counting operation is continued, and when a predetermined time Tb (> Ta) elapses (step S52), the switching determination unit 22 resets the time counting operation of the timer unit 23 (step S53), and sets the internal counter. One is counted up (step S54). Then, this count value is determined (step S55), and if the count value is less than the on / off frequency Na set in step S43, S45, or S47, the process returns to step S48 to restart the timing operation of the timer unit 23. Then, the same operation is repeated, and if the count value is the on / off number Na set, the counter is reset (step S56), and the process returns to step S40 to confirm the position of the operation unit 21. That is, the auxiliary switch 2 can repeatedly switch the relay contact 24 a number of times according to the position of the operation unit 21.

  Further, if an EEPROM or the like is used for the memory included in the switching determination unit 22, the data stored in the memory can be held regardless of the state of the main switch 1. Therefore, each time the main switch 1 is turned on / off. Then, the power supply is repeatedly turned on and off, and the lighting device 3 blinks, so that the user is not uncomfortable.

  And using the auxiliary switch 2 which performs the said operation | movement, as shown to FIG.17 (a)-(d), FIG.18 (a)-(d), FIG.19 (a)-(d), the lighting fixture 3 is shown. Can change the brightness.

  First, FIGS. 17A to 17D show the operation when switching from fully lit to 50% dimming. The main switch 1 is turned on, the operation unit 21 of the auxiliary switch 2 is set to the position X1, and fully lit. When the operation unit 21 is changed to the position X2 while the relay is in operation, the relay contact 24 inserted in the power supply line between the AC power supply Vac and the luminaire 3 repeats the off state at the time Ta four times with a period Tb, and the control circuit Reference numeral 43 denotes an internal counter that counts the number of times power supply is turned on and off as in the first embodiment, and writes this count value in the storage circuit 47. However, in the first embodiment, when the power supply time at the time of conduction / cutoff reaches a predetermined time set in advance in the control circuit 43, the count value is reset to “0”. Then, the count value when the predetermined time has elapsed is written in the storage circuit 47 as the dimming instruction value. Then, the control circuit 43 reads the dimming instruction value and determines the oscillation frequency of the inverter circuit 42 according to the dimming instruction value. In this case, since the dimming instruction value is 4, the oscillation frequency at which the brightness of the lighting fixture 3 is 50% is set.

  Next, FIGS. 18A to 18D show the operation when switching from full lighting to 25% dimming. The main switch 1 is turned on, and the operation unit 21 of the auxiliary switch 2 is set to the position X1 so as to be fully lit. When the operation unit 21 is changed to the position X3, the relay contact 24 repeats the OFF state at the time Ta five times with a period Tb, and the control circuit 43 is an internal counter and supplies power as in the first embodiment. The number of conduction / shutoff of the supply is counted, and this count value is written in the memory circuit 47. Then, the control circuit 43 reads the dimming instruction value, and since the dimming instruction value is 5, the control circuit 43 sets the oscillation frequency of the inverter circuit 42 to a frequency at which the brightness of the lighting fixture 3 becomes 25%.

  Next, FIGS. 19A to 19D show an operation in the case of switching from 25% dimming to full lighting. The main switch 1 is turned on, the operation unit 21 of the auxiliary switch 2 is set to position X3, and 25% dimming is performed. When the operation unit 21 is changed to the position X1 while the light is being emitted, the relay contact 24 repeats the OFF state at the time Ta three times with a period Tb, and the control circuit 43 is an internal counter as in the first embodiment. The number of power supply conduction / shutoff times is counted, and this count value is written in the memory circuit 47. Then, the control circuit 43 reads the dimming instruction value, and since the dimming instruction value is 3, the control circuit 43 sets the oscillation frequency of the inverter circuit 42 to a frequency at which the brightness of the lighting fixture 3 becomes 100%.

  Thus, in this embodiment, the brightness of the lighting fixture 3 can be changed with a simple configuration, and an illumination system that can expect an energy saving effect can be provided.

  In the first to sixth embodiments, the lamp La is a discharge lamp and the lighting device 4 has a built-in initial illuminance correction function. However, in the present embodiment, the lighting device 4 has a desired brightness. As long as the power supplied to the lamp La can be made variable, any configuration is possible, and there is no need to incorporate an initial illuminance correction function. Further, the lamp La does not have to be a discharge lamp, but may be an incandescent lamp or a light emitting diode (LED), and any light source may be used as long as the light output changes with a change in power supply.

  Furthermore, in the present embodiment, the brightness is set in three stages, but the number of stages may be other stages, for example, four or more stages.

(Embodiment 8)
In the lighting system of the seventh embodiment, the brightness of the lighting fixture 3 is switched depending on the number of conduction / cutoff of the power supply, but in this embodiment, by changing the power cutoff time at the time of conduction / cutoff of the power supply, The brightness of the lighting fixture 3 is switched. Hereinafter, the case where it switches to three steps of full lighting, 50% light control (light control 1), and 25% light control (light control 2) similarly to Embodiment 7 is demonstrated.

  When the position of the operation unit 21 is changed, the switching determination unit 22 controls the relay contact 24 to repeat the OFF state of the time Ta three times with a period Tb. Can be set in three stages of Ta1, Ta2 and Ta3 (Ta1 <Ta2 <Ta3) according to the indicated value of 21 (position of the operation unit 21), as shown in FIGS. 22 (a) to 22 (d). If the position 21 is switched to full lighting, the cutoff time Ta1, and if switched to the dimming 1 as shown in FIGS. 20 (a) to 20 (d), the cutoff time Ta2 is adjusted as shown in FIGS. 21 (a) to (d). When the light 2 is switched, the set time of the timer unit 23 is switched so that the cutoff time Ta3 is reached.

  The lighting device 4 is provided with a timer circuit that counts the shut-off time, and writes the measured shut-off time in the storage circuit 47. The control circuit 43 sets the oscillation frequency of the inverter circuit 42 to a frequency at which the brightness of the lighting fixture 3 becomes 100% when the cutoff time is 3 times Ta1, and when the cutoff time is 3 times, the inverter circuit 42 When the oscillating frequency of 42 is set to a frequency at which the brightness of the lighting fixture 3 is 50% and the cutoff time is Ta3 for all three times, the oscillation frequency of the inverter circuit 42 is set to a frequency at which the brightness of the lighting fixture 3 is 25%. Set to. When the cutoff time is other than Ta1, Ta2, and Ta3, the current state is maintained without changing the brightness of the lighting fixture 3. Furthermore, even when the three interruption times are different from each other or when the number of interruptions is less than three, it is assumed that it is due to an operation other than the auxiliary switch 2, and the current state of the lighting fixture 3 is not changed. To maintain.

  In the present embodiment, the same effect as in the seventh embodiment can be expected, and further, whether or not the power supply conduction / shutoff operation is performed by the auxiliary switch 2 can be determined by both the shutoff time and the number of shutoffs. The risk of doing so is reduced and the reliability can be improved.

(Embodiment 9)
In the lighting system of the seventh embodiment, the brightness of the lighting fixture 3 is switched according to the number of times of power supply conduction / shutoff, but in this embodiment, by changing the power conduction time at the time of power supply conduction / shutoff, The brightness of the lighting fixture 3 is switched. Hereinafter, the case where it switches to three steps of full lighting, 50% light control (light control 1), and 25% light control (light control 2) similarly to Embodiment 7 is demonstrated.

  When the position of the operation unit 21 is changed, the switching determination unit 22 controls the relay contact 24 to repeat the OFF state of the time Ta three times with a period Tb. This conduction time Tc = (Tb -Ta) can be set in three stages of Tc1, Tc2, and Tc3 (Tc1 <Tc2 <Tc3) according to the instruction value of the operation unit 21 (position of the operation unit 21), and FIGS. As shown in Fig. 23, when the position of the operation unit 21 is switched to full lighting, the conduction time Tc1, and as shown in Figs. 23 (a) to 23 (d), the conduction time Tc2 is switched to the dimming 1, and Figs. ), The setting time of the timer unit 23 is switched so that the conduction time Tc3 is reached if the light control 2 is switched.

  The lighting device 4 is provided with a timer circuit for measuring the conduction time, and the measured conduction time is written in the memory circuit 47. The control circuit 43 sets the oscillation frequency of the inverter circuit 42 to a frequency at which the brightness of the lighting fixture 3 becomes 100% when the conduction time is Tc1 twice, and the inverter circuit 42 when the conduction time is both Tc2. When the oscillation frequency of 42 is set to a frequency at which the brightness of the lighting fixture 3 is 50% and the conduction time is Tc3 twice, the oscillation frequency of the inverter circuit 42 is a frequency at which the brightness of the lighting fixture 3 is 25%. Set to. When the conduction time is other than Tc1, Tc2, and Tc3, the current state is maintained without changing the brightness of the lighting fixture 3. Furthermore, even when the conduction times of the two times are different from each other or when the number of conduction times is not enough, it is considered that the operation is not performed by the auxiliary switch 2 and the current state of the lighting fixture 3 is not changed. To maintain.

  In the present embodiment, the same effect as in the seventh embodiment can be expected, and further, whether or not the operation of turning on / off the power supply is due to the auxiliary switch 2 can be determined by both the conduction time and the number of conduction times. The risk of doing so is reduced and the reliability can be improved.

(Embodiment 10)
In the fluorescent lamp, the light color is changed depending on the composition of the phosphor applied in the tube. For example, in the case of a straight tube high-frequency lighting type fluorescent lamp FHF32, a three-wavelength light emitting daylight white (EX-N), a three-wavelength light emitting daylight color (EX-D), a three-wavelength light emitting bulb color (EX- L), etc., there are a plurality of light colors. The luminous flux reduction characteristics of these fluorescent lamps are different from each other in the composition of the phosphors. Therefore, when a fluorescent lamp is used for the lamp La, as shown in FIG. 26, the fluorescent lamps La1, La2, and La3 have slightly different light colors. Change. In other words, if the same illumination correction control is performed on fluorescent lamps having different luminous flux reduction characteristics, they are lit with different luminous fluxes, which may differ from the predetermined luminous flux depending on the fluorescent lamp. In order to reduce the deviation in illuminance correction control due to the difference in light color, it is necessary to change the illuminance correction curve depending on the light color. However, even if the light color of the fluorescent lamp changes, the electrical characteristics such as the lamp voltage and the lamp current do not change. Therefore, it is impossible to determine the light color of the fluorescent lamp from the lighting characteristics of the lighting device 4.

  Therefore, in the present embodiment, it is possible to correct the deviation in illuminance correction control due to the difference in the light color of the fluorescent lamp by operating the auxiliary switch 2. Here, since the illuminance correction curve of the lighting device 4 may be changed depending on the conduction / cutoff operation condition of the power supply by the auxiliary switch 2, the configuration of the auxiliary switch 2 may be the same as that of the seventh embodiment, and the configuration of the lighting device 4 is The initial illumination correction function of the first embodiment is added to the configuration of the seventh embodiment.

  When the operation unit 21 of the auxiliary switch 2 constituted by a three-position rotary switch is rotated, the switching determination unit 22 sets the number of times the relay contact 24 is turned on / off differently depending on the position of the operation unit 21. Set to.

  In the lighting device 4, an illuminance correction curve corresponding to each light color is stored in the storage circuit 47, and the control circuit 44 detects the number of times of power supply on / off when operating the operation unit 21, A corresponding illuminance correction curve is read from the storage circuit 47, and illuminance correction control is performed along the illuminance correction curve. That is, by operating the operation unit 21 according to the light color of the fluorescent lamp, it is possible to reduce the deviation in illuminance correction control due to the difference in light color.

  Therefore, an illuminance correction curve can be selected according to the light color of the fluorescent lamp used in the luminaire 3, and finer optimal illuminance correction control can be performed.

  Further, in this embodiment, the illuminance correction curve is switched depending on the number of times of power supply conduction / shutoff, but the illuminance correction curve may be switched according to the power shutdown time or the power conduction time as in the eighth or ninth embodiment.

(Embodiment 11)
2. Description of the Related Art In recent years, in the field of discharge lamp lighting devices, devices called lamp-free have been provided that enable a plurality of different types of discharge lamps to be lit by a single discharge lamp lighting device. For example, some straight tube 40W FL40, FLR40, and FHF32 lamps having similar lamp shapes and rated powers can be lit with the same lighting device.

  However, when illuminance correction control is performed with such a lamp-free lighting device, if the type of lamp is different, the light flux decay characteristics change as shown in FIG. Will occur.

  Therefore, in the present embodiment, the lamp-free lighting device 4 is used to store the illuminance correction curves of all the lamps La that can be adapted to the storage circuit 47, and assist the deviation of illuminance correction control due to the difference in lamp type. Correction can be made by operating the switch 2. Here, since the illuminance correction curve of the lighting device 4 may be changed depending on the conduction / cutoff operation condition of the power supply by the auxiliary switch 2, the configuration of the auxiliary switch 2 may be the same as that of the seventh embodiment, and the configuration of the lighting device 4 is The initial illumination correction function of the first embodiment is added to the configuration of the seventh embodiment.

  When the operation unit 21 of the auxiliary switch 2 constituted by a three-position rotary switch is rotated, the switching determination unit 22 sets the number of times the relay contact 24 is turned on / off differently depending on the position of the operation unit 21. Set to.

  The control circuit 44 of the lighting device 4 detects the number of times power supply is turned on and off when the operation unit 21 is operated, reads an illuminance correction curve corresponding to the detected number of times from the storage circuit 47, and follows the illuminance correction curve. Perform illuminance correction control. That is, by operating the operation unit 21 according to the lamp type, it is possible to reduce the deviation of the illuminance correction control due to the difference in the lamp type.

  Therefore, the illuminance correction curve can be selected according to the type of lamp used in the luminaire 3, and finer and optimal illuminance correction control can be performed.

  Further, in this embodiment, the illuminance correction curve is switched depending on the number of times of power supply conduction / shutoff, but the illuminance correction curve may be switched according to the power shutdown time or the power conduction time as in the eighth or ninth embodiment.

Embodiment 12
The illuminance correction value of the initial illuminance correction control is normally set to 70% because the maintenance rate of the normal use environment is 0.7. That is, the lighting device 4 controls the power supplied to the lamp La so that the luminous flux is 70% of the rated luminous flux at the beginning of lamp lighting. However, depending on the usage environment, there is an environment in which lighting design is performed with a maintenance rate smaller than 0.7. Under such conditions, the illuminance correction value can be further reduced. For example, as shown in FIG. 27, when the illuminance correction value is lowered from 70% (lamp light flux characteristic Yf1) to 60% (lamp light flux characteristic Yf2), the lamp power characteristic Yp1 is supplied to the lamp La as the lamp power characteristic Yp2. Therefore, the power consumption can be reduced, and the power consumption of the lamp La can be reduced to increase the energy saving effect.

  Therefore, in the present embodiment, it is possible to correct a deviation in illuminance correction control due to a use environment where the lighting fixture 3 is installed by operating the auxiliary switch 2. Here, since the illuminance correction curve of the lighting device 4 may be changed depending on the conduction / cutoff operation condition of the power supply by the auxiliary switch 2, the configuration of the auxiliary switch 2 may be the same as that of the seventh embodiment, and the configuration of the lighting device 4 is The initial illumination correction function of the first embodiment is added to the configuration of the seventh embodiment.

  When the operation unit 21 of the auxiliary switch 2 constituted by a three-position rotary switch is rotated, the switching determination unit 22 sets the number of times the relay contact 24 is turned on / off differently depending on the position of the operation unit 21. Set to.

  In the lighting device 4, an illuminance correction curve corresponding to the illuminance correction value of each use environment is stored in the storage circuit 47, and the control circuit 44 detects the number of continuity / shutoff times of the power supply when operating the operation unit 21, An illuminance correction curve corresponding to the number of detections is read from the storage circuit 47, and illuminance correction control is performed along the illuminance correction curve. That is, by operating the operation unit 21 according to the illuminance correction value of the usage environment, it is possible to reduce the deviation of the illuminance correction control due to the difference of the illuminance correction value of the usage environment.

  Therefore, the illuminance correction curve can be selected according to the illuminance correction value of the usage environment of the luminaire 3, finer and more optimal illuminance correction control can be performed, and the energy saving effect can be enhanced.

  Further, in the same configuration as described above, when the absolute illuminance is insufficient in the usage environment, the illuminance required by increasing the illuminance correction value (for example, the illuminance correction value is greater than 70%). The initial illuminance correction according to the environment is possible and the energy saving effect can be exhibited.

  Furthermore, in this embodiment, the illuminance correction value is switched to two stages, but if it is set to three or more stages, finer initial illuminance correction becomes possible.

  In the present embodiment, the illuminance correction curve is switched depending on the number of times of power supply conduction / shutoff. However, the illuminance correction curve may be switched according to the power shutdown time or the power conduction time as in the eighth or ninth embodiment.

(Embodiment 13)
In the first to twelfth embodiments, the operation of the auxiliary switch 2 merely repeats ON / OFF of the contact 24 of the relay periodically. While the power supply is cut off, the control power supply Vcc is not generated. The power supply circuit 44 shown in FIG. 3 has to store the power supply capacity required when the power supply is cut off in the capacitor 44d. Therefore, the capacity of the capacitor 44d must be increased as the interruption time of the AC power supply Vac by the auxiliary switch 2 becomes longer. In other words, the lighting device 4 is disadvantageous for downsizing.

  Therefore, in this embodiment, as shown in FIG. 28, the auxiliary switch 2 is provided with a phase control circuit 26, and the voltage obtained by phase-controlling the input from the AC power supply Vac while the relay contact 24 is in the OFF state. Is supplied to the lighting device 4, so that a change in the power supply state due to the on / off of the auxiliary switch 2 can be reliably detected, and the control power supply Vcc can be easily secured while the auxiliary switch 2 is off. It is something that can be done.

  Hereinafter, the operation of the present embodiment will be described with reference to FIGS. 28 and 29A to 29G. The auxiliary switch 2 has a phase control circuit 26 connected in parallel with the relay contact 24. The phase control circuit 26 is a series circuit of a triac 26a, a diode 26c and a resistor 26d connected in parallel to the relay contact 24. A series circuit of a capacitor 26f, a variable resistor 26g and a resistor 26h, a series circuit of a diode 26j and a resistor 26k, and a connection midpoint between the capacitor 26f and the variable resistor 26g and a control terminal of the triac 26a. A diode 26e connected between a diac (trigger diode) 26b, a connection midpoint between the diode 26c and the resistor 26d, and a connection midpoint between the capacitor 26f and the variable resistor 26g, and a connection between the capacitor 26f and the variable resistor 26g. Diode connected between the midpoint and the midpoint of connection between the diode 26j and the resistor 26k Composed of the 6i.

  When the auxiliary switch 2 is operated and the contact 24 of the relay is turned off, the voltage of the AC power supply Vac (FIG. 29A) is applied to the phase control circuit 26 (here, positive polarity), Charge is supplied to the capacitor 26f via the variable resistor 26g and the resistor 26h. When the voltage of the capacitor 26f exceeds the breakover voltage of the diac 26b, the diac 26b becomes conductive. When the diac 26b becomes conductive, a trigger current is supplied to the triac 26a, the triac 26a becomes conductive, and a forward current can flow. The charge charged in the capacitor 26f is the triac 26a, the resistor 26k, It is discharged through the diode 26i so that the next trigger timing becomes constant. Once the triac 26a is turned on, it continues to turn on until the polarity of the AC power supply Vac is reversed and the forward current disappears.

  When the polarity of the AC power supply Vac becomes negative, the triac 26a is once cut off and charges are supplied again to the capacitor 26f. At this time, the capacitor 26f is supplied with a charge in the opposite direction to the case where the polarity of the AC power supply Vac is positive. However, since both the triac 26a and the diac 26b are elements having bidirectional polarity, As in the case where the polarity of the AC power supply Vac is positive, when the voltage of the capacitor 26f exceeds the breakover voltage of the diac 26b, the diac 26b becomes conductive and the triac 26a becomes conductive.

  Therefore, when the AC power supply Vac is supplied (see FIG. 29A), the auxiliary switch 2 is operated, the output of the switching determination unit 22 of the auxiliary switch 2 becomes H level (FIG. 29B), and the relay contact 24 When is turned off, the above operation is repeated to supply a phase-controlled voltage to the lighting device 4 (FIG. 29 (c)). Since the phase angle at which the power is shut off is determined by the timing at which the triac 26a is triggered, the phase angle can be changed by changing the rise of the charging voltage of the capacitor 26f. That is, if the resistance value of the variable resistor 26g is reduced, the rise of the charging voltage of the capacitor 26f is accelerated and the phase angle is reduced, and if the resistance value of the variable resistor 26g is increased, the rise of the charging voltage of the capacitor 26f is delayed. The phase angle increases. As described above, the phase angle can be adjusted by the variable resistor 26g. However, if this adjustment function is not necessary, the phase angle may be set only by the resistor 26h without the variable resistor 26g.

  When the relay contact 24 is turned off and the phase control voltage shown in FIG. 29C is supplied to the lighting device 4, the comparator 44 i of the power supply circuit 44 has the phase control voltage that is full-wave rectified by the rectifier circuit 40. (FIG. 29 (d)), the detection voltage Vs1 obtained by dividing the phase control voltage by the resistors 44e and 44f is compared with the reference voltage Vref1 (FIG. 29 (d)), and the output is detected voltage Vs1. Becomes a rectangular wave signal synchronized with the phase of the AC power supply Vac that is at the H level only during a period greater than the reference voltage Vref1 (FIG. 29E).

  The rectangular wave signal shown in FIG. 29 (e) has an L level time longer when the relay contact 24 is off than when the relay contact 24 is on, by the phase angle at which the power is shut off. Thus, the voltage Vs2 obtained by smoothing the output of the comparator 44i with the resistor 44j and the capacitor 44k becomes low. Accordingly, if the reference voltage Vref2 of the comparator 44n is set to an intermediate voltage between the voltage Vs2 when the relay contact 24 is on and the voltage Vs2 when the relay contact 24 is off (FIG. 29 (f)), the contact 24 of the relay is obtained by the comparator 44n. This state can be determined (FIG. 29 (g)), and the operation of the auxiliary switch 2 can be reliably detected by the lighting device 4.

  Further, since the rectified phase control voltage shown in FIG. 29D is supplied to the power supply circuit 44 even when the contact 24 of the relay is in the OFF state, the power supply is performed as in the first to twelfth embodiments. Compared with the case where the power supply is completely shut off, the power necessary for generating the control power Vcc can be easily supplied, and the power supply circuit 44 can be downsized.

  Further, a plurality of reference voltages Vref2 of the comparator 44n of the power supply circuit 44 are provided so as to be switchable, and the voltage Vs2 is changed in accordance with the change of the phase angle by changing the resistance value of the variable resistor 26g. 12 can be switched and the illuminance correction can be switched.

  In addition, even if it uses the auxiliary switch 2 of this embodiment for Embodiment 1-12, there can exist an effect similar to Embodiment 1-12.

(Embodiment 14)
In the thirteenth embodiment, the phase control voltage is supplied to the power supply circuit 44 while the contact 24 of the auxiliary switch 2 is in the OFF state, but the same effect can be obtained even if a half-wave rectified voltage is supplied instead of the phase control voltage. be able to.

  Therefore, in the present embodiment, as shown in FIG. 30, a diode 27 is connected in parallel to the contact 24 of the auxiliary switch 2, and the input from the AC power supply Vac is half-wave while the relay contact 24 is in the OFF state. By supplying the rectified voltage to the lighting device 4, it is possible to reliably detect a change in the power supply state due to the on / off of the auxiliary switch 2, and to easily secure the control power supply Vcc while the auxiliary switch 2 is off. Is something that can be done.

  Hereinafter, the operation of the present embodiment will be described with reference to FIGS. First, when the AC power supply Vac is supplied (see FIG. 31A), the auxiliary switch 2 is operated, the output of the switching determination unit 22 of the auxiliary switch 2 becomes H level (FIG. 31B), and the relay contact 24 Is turned off, a voltage obtained by half-wave rectifying the AC power supply Vac with the diode 27 is supplied to the lighting device 4 (FIG. 31C).

  When the relay contact 24 is cut off and the half-wave rectified voltage shown in FIG. 31C is supplied to the lighting device 4, the half-wave rectified voltage is also input to the comparator 44i of the power supply circuit 44 (FIG. 31). (D)), the detection voltage Vs1 obtained by dividing the half-wave rectified voltage by the resistors 44e and 44f is compared with the reference voltage Vref1 (FIG. 31 (d)), and the output of the detection voltage Vs1 is higher than that of the reference voltage Vref1. It becomes a rectangular wave signal which becomes H level only for a long period (FIG. 31 (e)).

  The rectangular wave signal shown in FIG. 31 (e) has an L level time longer by a half cycle of the AC power supply Vac when the relay contact 24 is off than when the relay contact 24 is on. The voltage Vs2 obtained by smoothing the output of the comparator 44i with the resistor 44j and the capacitor 44k becomes low. Therefore, if the reference voltage Vref2 of the comparator 44n is set to an intermediate voltage between the voltage Vs2 when the relay contact 24 is turned on and the voltage Vs2 when the relay contact 24 is turned off (FIG. 31 (f)), the contact 24 of the relay is obtained by the comparator 44n. Can be determined (FIG. 31G), and the operation of the auxiliary switch 2 can be reliably detected by the lighting device 4.

  Further, since the half-wave rectified voltage shown in FIG. 31D is supplied to the power circuit 44 even when the contact 24 of the relay is in an OFF state, the power supply is completely supplied as in the first to twelfth embodiments. Compared to the case of being cut off, the power necessary for generating the control power Vcc can be easily supplied.

  Further, since only the diode 27 is added, the power supply circuit 44 can be further downsized with a simpler configuration than that of the thirteenth embodiment.

  In addition, even if it uses the auxiliary switch 2 of this embodiment for Embodiment 1-12, there can exist an effect similar to Embodiment 1-12.

(Embodiment 15)
In this embodiment, the operation of the auxiliary switch 2 is reliably detected by the lighting device 4 by changing the amplitude of the voltage supplied to the lighting device 4 in accordance with the on / off of the auxiliary switch 2, and the power is shut off. Also, the control power supply Vcc is easily generated.

  As shown in FIG. 32, the auxiliary switch 2 includes a power transformer 28 having a turns ratio of 1: 1 and a relay having two contacts 24a and 24b. The primary winding n1 of the power transformer 28 is a main switch. 1 is connected to an AC power supply Vac. The secondary winding n2 of the power transformer 28 is connected to the lighting fixture 3 via the relay contacts 24a and 24b, and the tap provided at one end of the secondary winding n2 is connected to the contact 24a, and the secondary winding n2 The tap provided at the midpoint is connected to the contact 24b, and the other end of the secondary winding n2 is directly connected to the lighting fixture 3.

  Hereinafter, the operation of the present embodiment will be described with reference to FIGS. First, when the AC power source Vac is supplied (see FIG. 33A), when the auxiliary switch 2 is operated and the output of the switching determination unit 22 of the auxiliary switch 2 becomes H level (FIG. 33B), the contacts 24a, The voltage supplied to the lighting device 4 (lighting fixture 3) when 24b is alternately switched to the contact 24b is ½ of the voltage when switched to the contact 24a (FIG. 33 (c)). When such a voltage is supplied to the lighting device 4, the detection voltage Vs1 of the power supply circuit 44 is also halved when switching to the contact 24a. At this time, if the reference voltage Vref1 of the comparator 44i is set higher than the peak value of the detection voltage Vs1 at the time of switching the contact 24b and lower than the detection voltage Vs1 at the time of switching the contact 24a (FIG. 33 (d)), the comparator The output of 44i becomes L level when the contact 24b is switched (FIG. 33 (e)), and thereafter, the state of the relay contacts 24a and 24b can be determined by the comparator 44n (FIG. 33 (f) (g)). Thus, the operation of the auxiliary switch 2 can be reliably detected.

  In addition, since the power supply circuit 44 is supplied with a normal voltage of 1/2 even during the operation of the contact 24 of the relay, compared to the case where the power supply is completely cut off as in the first to twelfth embodiments, The power necessary to generate the control power Vcc can be easily supplied.

  Further, the power supply during operation of the auxiliary switch 2 is set to ½ of the normal voltage. However, it is possible to reliably detect the operation of the auxiliary switch 2 and to supply the control power Vcc during that time. For example, the voltage during operation of the auxiliary switch 2 may be set higher than normal.

  In addition, even if it uses the auxiliary switch 2 of this embodiment for Embodiment 1-12, there can exist an effect similar to Embodiment 1-12.

It is a figure which shows the structure of the illumination system of Embodiment 1 of this invention. It is a disassembled perspective view which shows the external appearance of a lighting fixture same as the above. It is a figure which shows the circuit structure of the lighting device same as the above. (A)-(g) It is a figure which shows the waveform of each part same as the above. (A)-(d) It is a figure which shows the power supply state at the time of reset operation | movement of the lamp | ramp cumulative lighting time same as the above. It is a figure which shows the block configuration of an auxiliary switch same as the above. It is a figure which shows the external appearance of an auxiliary switch same as the above. It is a figure which shows the operation | movement of an auxiliary switch same as the above by a flowchart. (A)-(e) It is a figure which shows reset operation | movement of the lamp | ramp cumulative lighting time same as the above. It is a figure which shows the external appearance of the main switch and auxiliary switch of Embodiment 2 of this invention. It is a figure which shows the block configuration of the main switch and auxiliary switch same as the above. It is a figure which shows the operation | movement of the auxiliary switch of Embodiment 3 of this invention with a flowchart. It is a figure which shows the block configuration of the auxiliary switch of Embodiment 5 of this invention. It is a figure which shows the external appearance of the main switch and auxiliary switch same as the above. It is a figure which shows the external appearance of the auxiliary switch of Embodiment 7 of this invention. It is a figure which shows the operation | movement of an auxiliary switch same as the above by a flowchart. (A)-(d) It is a figure which shows the light control operation | movement from the all lighting to the light control 1 same as the above. (A)-(d) It is a figure which shows the light control operation | movement from the all lighting to the light control 2 same as the above. (A)-(d) It is a figure which shows the light control operation | movement from the light control 2 same as the above to full lighting. (A)-(d) It is a figure which shows the light control operation | movement from the all lighting to the light control 1 of Embodiment 8 of this invention. (A)-(d) It is a figure which shows the light control operation | movement from the all lighting to the light control 2 same as the above. (A)-(d) It is a figure which shows the light control operation | movement from the light control 2 same as the above to full lighting. (A)-(d) It is a figure which shows the light control operation | movement from the all lighting to the light control 1 of Embodiment 9 of this invention. (A)-(d) It is a figure which shows the light control operation | movement from the all lighting to the light control 2 same as the above. (A)-(d) It is a figure which shows the light control operation | movement from the light control 2 same as the above to full lighting. It is a figure which shows each light flux decline characteristic of the fluorescent lamp from which the light color of Embodiment 10 of this invention differs. It is a figure which shows the light beam characteristic and electric power characteristic in case the illumination intensity correction value of Embodiment 12 of this invention differs. It is a figure which shows the circuit structure of the auxiliary switch of Embodiment 13 of this invention. (A)-(g) It is a figure which shows the waveform of each part same as the above. It is a figure which shows the circuit structure of the auxiliary switch of Embodiment 14 of this invention. (A)-(g) It is a figure which shows the waveform of each part same as the above. It is a figure which shows the circuit structure of the auxiliary switch of Embodiment 15 of this invention. (A)-(g) It is a figure which shows the waveform of each part same as the above.

Explanation of symbols

Vac AC power supply 1 Main switch 2 Auxiliary switch 3 Lighting fixture 4 Lighting device 40 Rectifier circuit 41 Chopper circuit 42 Inverter circuit 43 Control circuit 44 Power supply circuit 46 Counter 47 Memory circuit La lamp

Claims (11)

At least one lighting fixture comprising a lighting device for lighting at least one light source;
A main switch that turns on and off the power supply to the lighting device;
An auxiliary switch including an operation unit and a switching determination unit that changes a state of power supplied to the lighting device to a predetermined state in response to an input from the operation unit;
The lighting device detects a state of power supplied to the lighting device, and changes the lighting state of the light source when the detected state change of the power source coincides with the predetermined state change due to the operation of the auxiliary switch. An illumination system comprising a lighting control means. The auxiliary switch includes a contact for conducting / interrupting the power supply to the lighting device, and the switching determination unit turns the contact on and off to the lighting device when the operation unit is operated once. The supply power supply is turned on / off repeatedly within a predetermined time, the power supply detecting means detects the supply / cutoff state of the power supplied to the lighting device, and the lighting control means is connected to the detected power supply The lighting system according to claim 1, wherein the lighting state of the light source is changed when the repeated interruption operation coincides with the repeated operation of turning on and off the power source by the operation of the auxiliary switch. The auxiliary switch includes a contact for conducting / interrupting power supply to the lighting device, and a phase control means for supplying power to the lighting device according to a phase angle of a power supply voltage when the contact is turned off, and the switching determination unit When the operation unit is operated once, ON / OFF of the contact is repeated a plurality of times within a predetermined time, and the power detection means is in a state of power supplied to the lighting device when the contact is turned on, The lighting control unit detects a state of the phase-controlled power supplied to the lighting device when the contact is turned off, and the lighting control unit matches the detected state change of the power source with the state change of the power source due to the operation of the auxiliary switch. The lighting system according to claim 1, wherein the lighting state of the light source is changed. The auxiliary switch includes a contact for conducting / interrupting power supply to the lighting device, and a diode for supplying half-wave rectified power to the lighting device when the contact is turned off. When the unit is operated once, the contact is turned on and off a plurality of times within a predetermined time, and the power detection means detects the state of power supplied to the lighting device when the contact is turned on, and turns off the contact. The lighting control means detects the state of the half-wave rectified power supplied to the lighting device from time to time, and the lighting control means detects the light source when the detected state change of the power source matches the state change of the power source due to the operation of the auxiliary switch. The lighting system according to claim 1, wherein the lighting state is changed. The auxiliary switch includes means for changing an amplitude of a power supply voltage supplied to the lighting device in accordance with an operation of the operation unit, and the switching determination unit is configured to operate the power supply when the operation unit is operated once. The amplitude of the voltage is changed a plurality of times within a predetermined time, the power detection means detects a change in the amplitude of the power supply voltage supplied to the lighting device, and the lighting control means detects the detected amplitude change in the power supply The lighting system according to claim 1, wherein the lighting state of the light source is changed when the amplitude of the power source is changed by the operation of the auxiliary switch. The auxiliary switch includes a timer unit that starts timing from the time when there is an input from the operation unit, and a relay that includes a contact that conducts and interrupts power supply to the lighting device, and the switching determination unit includes a timer The lighting system according to any one of claims 1 to 5, wherein a relay contact is turned on / off based on a time counting operation of the unit and an operation of the main switch. The lighting device includes means for counting a cumulative lighting time of a light source, and correcting light beam deterioration due to deterioration of the light source according to a count value of the cumulative lighting time, and a change in the state of the power source detected by the power source detecting means is the auxiliary The lighting system according to claim 1, wherein the count value of the cumulative lighting time of the light source is reset when it coincides with a predetermined state change due to the operation of the switch. The lighting system according to claim 7, wherein the auxiliary switch includes means for notifying the completion of the reset operation by sound in the vicinity of the operation unit. The light source is a discharge lamp, and the lighting device assists an illuminance correction curve of the discharge lamp when a change in the state of the power detected by the power detection means coincides with a predetermined change in the state due to the operation of the auxiliary switch. 7. The illumination system according to claim 1, wherein the illumination system is switched to an illuminance correction curve corresponding to the operation of the switch to correct an illuminance correction shift caused by a difference in light color of the discharge lamp. The light source is a discharge lamp, and the lighting device can support a plurality of discharge lamps, and when the state change of the power source detected by the power source detection means coincides with a predetermined state change due to the operation of the auxiliary switch, 7. The illuminance correction curve of the discharge lamp is switched to an illuminance correction curve corresponding to the operation of the auxiliary switch, and the deviation of the illuminance correction due to the difference in the type of the discharge lamp is corrected. Lighting system. The light source is a discharge lamp, and the lighting device assists the illuminance correction value of the discharge lamp when the change in the power supply state detected by the power supply detection unit coincides with a predetermined change in state due to the operation of the auxiliary switch. 7. The illumination system according to claim 1, wherein the illumination system switches to an illuminance correction value corresponding to the operation of the switch.

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