JP2010073575A - Lighting device, illuminating equipment using the same, and illuminating system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting device, illuminating equipment, and an illuminating system which can prevent unintended adjustment of the brightness of a light source or resetting of consecutive lighting times. <P>SOLUTION: The lighting device includes a lighting circuit unit 10, an output control unit 11, a time-counting unit 12 which counts a lighting time of a discharge lamp La, a memory unit 13 which stores consecutive lighting times and a light control level of the discharge lamp La, a light control unit 14 which calculates a light control command value as a result of correction of light flux reduction in accordance with the light control level and consecutive lighting times stored in the memory unit 13 to output the calculated light control command value to the output control unit 11, and a power supply-detecting unit 15 which detects a supply voltage to detect an on/off state of a power supply. The light control unit 14 resets consecutive lighting times when the power supply-detecting unit 15 detects a first on/off state of the power supply, and changes a light control level to another light control level when the power supply detecting unit 15 detects a second on/off state of the power supply different from the first on/off state of the power supply. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a lighting device that adjusts the brightness of a light source and measures a cumulative lighting time, a lighting fixture using the lighting device, and a lighting system.

  2. Description of the Related Art Conventionally, lighting fixtures with a dimming function that incorporate a lighting device capable of adjusting the brightness of a light source such as a discharge lamp have been widely used. In such a lighting system using a plurality of lighting fixtures with a dimming function, a dimming signal line for sending a dimming signal (analog signal or digital signal) indicating a dimming level to the lighting fixture is laid, for example, a wall surface A lighting system is generally used in which a user can arbitrarily adjust the brightness of a light source by transmitting a dimming signal from a dimming controller attached to the lamp to each lighting fixture. However, in such a lighting system, wiring work for laying both a power line for supplying commercial power to each lighting fixture and a dimming signal line for transmitting a dimming signal is required. In addition, when replacing an existing lighting fixture that does not have a dimming function with a lighting fixture with a dimming function, there is a problem that the dimming signal line is not installed and cannot be handled. In order to solve this problem, for example, a wireless dimming signal transmission technique using a remote control or a power line signal carrier technique for superimposing a dimming signal on a commercial power supply voltage has been proposed. Since there is a cost for the transmission / reception unit, there is a problem that the cost of the entire lighting system increases.

  On the other hand, for example, in a residential lighting fixture, means for changing the brightness of a light source by turning on / off a power switch (wall switch) is used. For example, as described in Patent Document 1, the lighting fixture recognizes whether the operation time from when the power switch is turned off to when it is turned on again falls within a predetermined time. In general, a method of sequentially switching the brightness of the light source every time when the power-off operation is recognized, such as all lighting → dimming lighting → extinguishing (nightlight) → all lighting is widely adopted.

  In addition, according to Patent Document 2, when the operator performs the first operation to turn on / off the power switch, the dimming rate of the discharge lamp is sequentially set at a predetermined time interval from the value set so far. Temporarily change, and then the dimming rate during the second operation among the dimming rates that are tentatively changed sequentially when the operator performs the second operation to turn on / off the power switch will be described below. It has been proposed that the discharge lamp can be turned on as a dimming level. When such a means is used, the user can adjust the brightness of the light source by using an existing power line, so that there is an advantage that it is not necessary to newly install a dimming signal line.

  On the other hand, a lighting device that measures the lighting time of the light source has been proposed. For example, in consideration of the fact that the luminous flux of a light source such as a discharge lamp is higher than the rated value at the beginning of lighting and declines according to the cumulative lighting time, the cumulative lighting time of the light source is timed and the luminous flux according to the cumulative lighting time is measured. A lighting device is widely adopted that changes the power supplied to the light source to an extent suitable for the decline and keeps the light output at the rated value regardless of the cumulative lighting time, thereby suppressing excess power from the initial lighting to the lifetime. In such a lighting device, it is necessary to reset the cumulative lighting time when the light source is replaced. As such means, for example, there is one that detects the end of the life of the light source or the replacement of the light source, and automatically resets the cumulative lighting time when the light source is replaced. However, in the above lighting device, even when the user intentionally removes the light source, for example, due to cleaning or maintenance, the cumulative lighting time is reset.

As means for solving this problem, means for resetting the cumulative lighting time by turning on / off the power switch in a predetermined state is used. For example, Patent Document 3 proposes a method of detecting the number of times the power switch is turned on / off in a predetermined time and resetting the cumulative lighting time when the predetermined number of times is exceeded. By using such means, the cumulative lighting time can be reset without removing the light source, so that the above problem can be solved. In addition, it is necessary to reset the cumulative lighting time even when the cumulative lighting time of the light source is timed and the user is notified when the cumulative lighting time approaches the life of the light source and prompts the user to replace the light source. The user can reset the cumulative lighting time by using an existing power line without installing a dedicated reset switch.
Japanese Utility Model Publication No. 4-115799 JP 2008-103199 A JP 2000-223296 A

  However, the illumination system in which the brightness of the light source can be adjusted by operating the power switch as in the above conventional example and the illumination system in which the cumulative lighting time is reset by operating the power switch, or both are combined. In an integrated lighting system, when the power switch is operated with the intention of adjusting the brightness of the light source, the cumulative lighting time may be erroneously reset. Conversely, when the power switch is operated with the intention of resetting the cumulative lighting time, the brightness of the light source may be erroneously adjusted. In particular, when the cumulative lighting time is reset unintentionally, a new light source with a reduced luminous flux is newly installed in the lighting system that adjusts the brightness of the light source so as to correct the luminous flux that declines as the cumulative lighting time elapses. Therefore, there is a problem in that the brightness of the desired light source cannot be obtained because the supplied power is adjusted as a light source.

  The present invention has been made in view of the above points. A lighting device, a lighting fixture, and a lighting system that can prevent unintentionally adjusting the brightness of a light source or resetting a cumulative lighting time. The purpose is to provide.

  In order to achieve the above object, the invention according to claim 1 controls the lighting circuit unit that turns on the light source by receiving power from an external power source, and controls the lighting circuit unit according to a given dimming command value. Output control unit for dimming the light source, a timing unit for timing the lighting time of the light source, a storage unit for storing the cumulative lighting time of the light source and the dimming level, and the dimming level stored in the storage unit, A dimming control unit that calculates a dimming command value that corrects the beam decay according to the cumulative lighting time and outputs the dimming command value to the output control unit; a power source detection unit that detects a power source voltage and detects an on / off state of the power source; And the dimming control unit resets the cumulative lighting time when the first power source on / off state is detected by the power source detection unit, and the second different from the first power source on / off state at the power source detection unit. The dimming level is detected when the power on / off state is detected. And switches the Le in a different dimming levels.

  According to a second aspect of the present invention, in the first aspect of the invention, the power source detection unit includes means for measuring at least one of a power on time and an off time, and the power on time in the second power on / off state. Alternatively, at least one of the off times is not necessarily the same time as the power on time and the off time in the first power on / off state.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, when the dimming control unit detects the second power on / off state, the dimming level is discrete or continuous from a predetermined value set in advance. The dimming level is changed to the dimming level setting mode in which the operation to switch to is repeated, and the dimming level at the time when the third power on / off state different from the first and second power on / off states is detected is changed to a new dimming level. Is stored in the storage unit.

  According to a fourth aspect of the present invention, in the third aspect of the present invention, there is provided a limit on the number of repetitions of the operation of switching the dimming level in the dimming level setting mode, and the dimming control unit is configured to turn on the third power supply before the limit is exceeded. In the case where the / off state is not detected, the dimming level setting mode is ended, and control is performed based on the dimming level stored in the storage unit before the dimming level setting mode is entered.

  According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects, the dimming control unit detects a fourth power on / off state different from the first to third power on / off states. Then, the light control level is set to a predetermined value set in advance.

  The invention of claim 6 is provided with a load detection unit for detecting whether or not a light source is connected in the invention of any one of claims 1 to 5, and the dimming control unit is configured such that the load detection unit is a light source. When it is detected that it is not connected, the operation of switching the dimming level to another dimming level is invalidated.

  The invention according to claim 7 is the invention according to any one of claims 1 to 6, wherein the dimming control unit changes the dimming level from the upper limit value or the lower limit value to a desired value when switching the dimming level. It is characterized by that.

  The invention of claim 8 is the invention according to any one of claims 1 to 7, wherein the dimming control unit changes the dimming level from an upper limit value or a lower limit value to a desired value every time the light source is turned on. It is characterized by.

  The invention according to claim 9 is the invention according to claim 7 or 8, wherein the dimming control unit discretely or continuously adjusts the dimming level from an upper limit value to a desired value, or from a lower limit value of the dimming level to a desired value. It is characterized by being changed.

  The invention according to claim 10 is the instrument main body, the socket accommodated in the instrument main body and detachably mounted with the light source, and power supplied to the light source via the socket. And a lighting device.

  The invention of claim 11 includes the plurality of lighting fixtures according to claim 10 and a power switch provided on a path for supplying power from an external power source to each lighting fixture and opening and closing the path. To do.

  According to the first to third aspects of the present invention, the cumulative lighting time of the light source can be reset and the dimming level can be set by turning on / off different power switches. Or setting the dimming level by mistake can be prevented.

  According to the invention of claim 4, it is possible to prevent the light control level from being switched unintentionally.

  According to the invention of claim 5, even when the dimming level varies in each lighting device, the dimming level can be collectively reset, and convenience is improved.

  According to the sixth aspect of the present invention, when a plurality of lighting fixtures equipped with a lighting device are operated with a single power switch, the lighting fixture to which a load is connected and the lighting fixture to which the load is not connected are classified. You can set the dimming level.

  According to the seventh to ninth aspects of the present invention, it is possible to easily visually recognize that the dimming level has been switched and what value the dimming level is at the present time.

  According to invention of Claim 10, the lighting fixture which can show | play the effect of any one of Claims 1 thru | or 9 is realizable.

  According to the eleventh aspect of the present invention, it is possible to realize an illumination system including a luminaire that can achieve the effect of any one of the first to ninth aspects.

(Embodiment 1)
Hereinafter, Embodiment 1 of the lighting device according to the present invention will be described with reference to the drawings. In the present embodiment, as shown in FIG. 1A, a power switch SW that is provided on a wall surface (not shown) and switches on / off of a power supply path from a commercial power source AC that is an external power source to the lighting device 1. A lighting circuit unit 10 that receives AC power from the commercial power supply AC and supplies lighting power to the discharge lamp La, which is a light source, and controls the lighting circuit unit 10 according to a given dimming command value to discharge the lamp. An output control unit 11 that controls the light output of La, a time measuring unit 12 that measures the lighting time of the discharge lamp La, and a storage unit 13 that includes a non-volatile memory that stores the cumulative lighting time and the dimming level of the discharge lamp La; The dimming control unit 14 that calculates the dimming command value that corrects the light beam decrease from the accumulated lighting time and dimming level stored in the storage unit 13 and outputs the dimming command value to the output control unit 11; and the power supply voltage of the commercial power source AC. Detect the power switch SW And a power detection unit 15 for detecting the on / off state.

  In the present embodiment, the lighting circuit unit 10 includes a switching element and an inverter circuit that turns on the discharge lamp La at high frequency by switching on / off the switching element. The output control unit 11 includes a driver circuit that controls the driving frequency of the switching element in the lighting circuit unit 10. The dimming control unit 14 includes, for example, a microcomputer, and calculates and obtains a dimming command value for determining the drive frequency in the output control unit 11 according to the dimming level and the cumulative lighting time. In the present embodiment, the dimming control unit 14, the storage unit 13, and the time measuring unit 12 are configured separately, but may be configured in a single microcomputer. Since each circuit is well-known, detailed description thereof will be omitted here.

  Hereinafter, the operation of the present embodiment will be described with reference to the drawings. First, an operation for resetting the cumulative lighting time stored in the storage unit 13 will be described with reference to FIG. If the power detection unit 15 detects the on / off of the power switch SW, and the on time Ton of the power switch SW is T1 ≦ Ton ≦ T2, the dimming control unit 14 determines that the number of power on times is 1. Note that T1 and T2 only need to satisfy the relationship of T1 <T2, and in this embodiment, T1 = 0.5 seconds and T2 = 3.0 seconds are set. The power-on count is stored in the storage unit 13, and the dimming control unit 14 reads the power-on count from the storage unit 13 when the power switch SW is turned on next time. When the on-time Ton is continuously detected, the power-on count is incremented once, twice, and three times, and reaches a predetermined count (six times in the present embodiment) (that is, the first power-on / off state). And the cumulative lighting time reset condition is determined and the cumulative lighting time is reset. When Ton> T2, the number of power-on times is reset to 0 as shown in FIG. When Ton <T1, the number of power-on times is maintained as shown in FIG.

  Next, the dimming level switching operation of the discharge lamp La will be described with reference to FIG. When the power source detection unit 15 detects the on / off of the power switch SW and the on time Ton of the power switch SW is T3 ≦ Ton ≦ T4, the dimming control unit 14 determines that the first condition of the dimming level switching operation is It is determined that it has been established. If the on-time Ton becomes T5 or more when the power switch SW is turned on next time in this state (that is, if the second power on / off state is reached), the dimming control unit 14 performs the dimming level switching operation. It is determined that the second condition is satisfied, and the dimming level is switched. In this embodiment, when the dimming level is fully lit, that is, when the first condition and the second condition of the dimming level switching operation are satisfied when the dimming level is 100%, dimming is performed as shown in FIG. Switch the level to 50%. If the first condition and the second condition of the dimming level switching operation are satisfied when the dimming level is 50%, the dimming level is switched to 70% as shown in FIG. When the first condition and the second condition of the dimming level switching operation are satisfied when the dimming level is 70%, the dimming level is switched to full lighting as shown in FIG. Here, in the case of Ton <T3 or Ton> T4 in the determination of the first condition of the dimming level switching operation, and in the case of Ton <T5 in the determination of the second condition of the dimming level switching operation, The dimming control unit 14 maintains the dimming level without performing the dimming level switching operation. The dimming level is stored in the storage unit 13 and is read out every time the power switch SW is turned on, and the dimming control unit 14 performs dimming so as to correct the light beam decrease according to the dimming level and the cumulative lighting time. Calculate the command value. By supplying this dimming command value to the output control unit 11, the lighting circuit unit 10 lights the discharge lamp La with a light output corresponding to the dimming level and the cumulative lighting time.

  Note that T3 and T4 need only satisfy the relationship of T3 <T4. In this embodiment, T3 = 0.5 seconds and T4 = 3.0 seconds are set. Further, T5 is set so as to satisfy the relationship of T5> T2 in order to prevent the reset operation of the cumulative lighting time from being erroneously performed, and in this embodiment, T5 = 5.0 seconds. With this setting, when the power switch SW is operated with the intention of resetting the cumulative lighting time, the light control level will not be switched because the on time Ton is shorter than T5. Further, when the power switch SW is operated with the intention of switching the light control level, the on-time Ton becomes longer than T2, and thus the cumulative lighting time is not reset. Therefore, the possibility of erroneously resetting the cumulative lighting time and switching the dimming level can be greatly reduced. Here, as shown in FIG. 3D, the dimming level is erroneously switched by increasing the number of operations of the power switch SW necessary to establish the first condition of the dimming level switching operation. Can be more suitably prevented. However, in order to prevent the cumulative lighting time from being reset unintentionally, the number of operations must be set to be smaller than the number of power-on times.

  In the present embodiment, T5> T2 is set. However, even when T3> T2 or T4 <T1 is set, the effect of preventing the malfunction can be obtained. Further, in the present embodiment, the cumulative lighting time is measured to correct the decrease in luminous flux according to the cumulative lighting time, but the life of the discharge lamp La is determined according to the cumulative lighting time. You may be the structure which notifies a user that the lifetime is the last stage. In this embodiment, the conditions for establishing each operation are determined based on the on-time Ton of the power switch SW. However, the conditions for establishing each operation may be determined based on the off-time of the power switch SW. In this embodiment, the dimming level is switched in the order of full lighting, 50%, and 70% in the dimming level switching operation. You may comprise so that the switching operation of a light level may be performed. Moreover, although the lighting device 1 of this embodiment is comprised by one circuit block, the lighting circuit which performs the light control lighting of the discharge lamp La according to the signal from the control circuit block which performs various controls, and a control circuit block It may be divided into blocks.

  For example, as shown in FIG. 4, the lighting device 1 of the present embodiment is housed in a long box-shaped fixture body 2 having a pair of sockets 20 to which a discharge lamp La is detachably attached and used as a lighting fixture. Moreover, it is used in a lighting system in which a plurality of (here, lighting fixtures A to Z) lighting fixtures and one power switch SW are connected via a power line L.

(Embodiment 2)
Hereinafter, Embodiment 2 of the lighting device according to the present invention will be described with reference to the drawings. However, since the basic configuration of this embodiment is the same as that of the first embodiment, common portions are denoted by the same reference numerals and description thereof is omitted. In this embodiment, in order to notify the user that the dimming level switching operation has been performed, the discharge lamp is temporarily turned on regardless of the dimming level in the previous state during the dimming level switching operation. It is characterized in that the dimming level is switched discretely after turning on all of La.

  Hereinafter, the operation of the present embodiment will be described with reference to FIG. The dimming level switching operation of the present embodiment is configured to switch the dimming level in the order of full lighting, 50%, and 70% as in the first embodiment. As shown in FIG. 5A, when the power detection unit 15 detects the on / off of the power switch SW and the on-time Ton of the power switch SW is T3 ≦ Ton ≦ T4 as in the first embodiment, the adjustment is performed. The light control unit 14 determines that the first condition of the dimming level switching operation is satisfied. When the power switch SW is turned on next time in this state, the discharge lamp La is first lit with the light output of all lighting regardless of the current dimming level. Thereafter, when the on-time Ton becomes T5 or more, the dimming control unit 14 determines that the second condition of the dimming level switching operation is satisfied, and switches the dimming level.

  Here, when the dimming level is switched from full lighting to 50%, the discharge lamp La is lit with the light output of all lighting until the power switch SW is turned on until T5. The discharge lamp La is lit at a light output of 70% only during the interval, and later the discharge lamp La is lit at a light output of 50%. When the dimming level is switched from 50% to 70%, the discharge lamp La is turned on with the light output of all lighting until the power switch SW is turned on until T5, and then the light output of 70%. The discharge lamp La lights up.

  Further, for example, when the dimming level switching operation is configured to switch the dimming level in the order of full lighting, 75%, 50%, and 25%, the dimming level is set to 50% as shown in FIG. In the case of switching from 25% to 25%, the discharge lamp La lights up with the light output of all lighting from the time when the power switch SW is turned on until T5, and 75% and 50% of the time between T5 and T6 respectively. The discharge lamp La is lighted discretely with the light output, and then the discharge lamp La is lighted with a light output of 25%.

  As described above, it is possible to visually confirm that the dimming level switching operation has been performed by discretely switching from the fully lit dimming level to the target dimming level. In particular, even when the dimming level is low and it is difficult to visually check which dimming level is switched to, it can be easily confirmed. It should be noted that T6 is preferably set to, for example, about 1 second so that the user can easily confirm that the dimming level is switched discretely. In the present embodiment, the dimming level is switched discretely from full lighting, but may be switched discretely from a low dimming level to a high dimming level. Further, every time the power switch SW is turned on, the dimming level is discretely switched from full lighting to the current dimming level, or is switched discretely from a low dimming level to the current dimming level. It doesn't matter. In this case, the current dimming level can be confirmed every time the power switch SW is turned on.

(Embodiment 3)
Hereinafter, Embodiment 3 of the lighting device according to the present invention will be described with reference to the drawings. However, since the basic configuration of this embodiment is the same as that of the first embodiment, common portions are denoted by the same reference numerals and description thereof is omitted. This embodiment is a dimming level setting mode in which the dimming level is automatically switched in a predetermined order for a predetermined time (for example, several seconds to several tens of seconds) during the dimming level switching operation, and is used in this mode. It is characterized in that the dimming level is set by switching off the power switch SW at the dimming level that the person wants to set.

  Hereinafter, the operation of the present embodiment will be described with reference to FIG. As shown in FIG. 6A, when the power detection unit 15 detects the on / off of the power switch SW and the on time Ton of the power switch SW is T3 ≦ Ton ≦ T4 as in the first embodiment, the adjustment is performed. The light control unit 14 determines that the first condition of the dimming level switching operation is satisfied. When the power switch SW is turned on next time in this state, the discharge lamp La is first lit with the light output of all lighting regardless of the current dimming level. Thereafter, when the on-time Ton is equal to or greater than T5, the dimming control unit 14 determines that the second condition of the dimming level switching operation is satisfied, and shifts to the dimming level setting mode. In the dimming level setting mode, for example, every 5 seconds, the dimming level is automatically switched in the order of full lighting, 75%, 50%, 25%, and full lighting. When an off operation of the power switch SW (that is, the third power on / off state) is detected in the dimming level setting mode, the dimming control unit 14 stores the dimming level at the time when the off operation is detected in the storage unit 13. Remember. When the power switch SW is turned on next time, the dimming control unit 14 reads the dimming level stored in the storage unit 13 and lights the discharge lamp La according to the dimming level. Thus, the dimming level can be easily changed by a simple on / off operation of the power switch SW.

  In the dimming level setting mode, a limit is set on the number of times that the dimming level automatically switches in order, and if the turning-off operation of the power switch SW is not detected before the limit is exceeded, the dimming level setting mode is entered. You may make it return to the former light control level. For example, as shown in FIG. 6 (b), when the dimming level is 75%, the mode shifts to the dimming level setting mode, and the power switch SW OFF operation is not detected until the limit of 2 times is exceeded. In this case, the dimming level returns to 75% again. By configuring as described above, even when the user unintentionally operates the power switch SW to shift to the dimming level setting mode, the dimming level setting mode is terminated without switching the dimming level. Can do.

  Further, instead of discretely switching the dimming level in the dimming level setting mode, a configuration in which the dimming level is continuously changed steplessly as shown in FIG. In this case, the light control level desired by the user can be freely set.

(Embodiment 4)
Hereinafter, Embodiment 4 of the lighting device according to the present invention will be described with reference to the drawings. However, since the basic configuration of this embodiment is the same as that of the first embodiment, common portions are denoted by the same reference numerals and description thereof is omitted. As shown in FIG. 7A, the present embodiment is characterized in that a load detection unit 16 that detects whether or not a discharge lamp La that is a load is connected is provided.

  Hereinafter, the operation of this embodiment will be described. The load detection unit 16 detects whether or not the discharge lamp La is connected, and outputs a detection signal including the detection result to the dimming control unit 14. When the detection signal from the load detection unit 16 has a load, the dimming control unit 14 switches the dimming level as in the above-described embodiments as long as the on / off operation of the power switch SW satisfies the condition. I do. When the detection signal from the load detection unit 16 is no load, the dimming level is not switched even if the on / off operation of the power switch SW satisfies the condition, and the current dimming level is maintained. With this configuration, for example, as shown in FIG. 7B, a plurality of lighting fixtures (four in the drawing) are set as one set, and a plurality of lighting fixtures (five in the drawing) are connected in parallel via the power line L. In a connected lighting system, a discharge lamp La is attached to a group (for example, lighting fixtures A to D, I to L, and Q to T) for which the dimming level is to be switched, and the dimming level is switched. If there is no load without attaching the discharge lamp La to a set (for example, lighting fixtures E to H, M to P), the dimming level of only the loaded lighting fixture can be increased by turning on / off the power switch SW. Can be switched. In particular, in a lighting system or the like in which lighting fixtures for the entire floor are connected to a single power source, the dimming level can be set for each set of lighting fixtures when changing the floor layout, which is very effective.

(Embodiment 5)
Hereinafter, Embodiment 5 of the lighting device according to the present invention will be described with reference to the drawings. However, since the basic configuration of this embodiment is the same as that of the first embodiment, common portions are denoted by the same reference numerals and description thereof is omitted. The present embodiment is characterized in that the current dimming level can be reset to a fully lit dimming level by an on / off operation of the power switch SW.

  Hereinafter, the operation of the present embodiment will be described with reference to the drawings. As shown in FIG. 8, if the power detection unit 15 detects ON / OFF of the power switch SW and the ON time Ton of the power switch SW is T3 ≦ Ton ≦ T4, the dimming control unit 14 resets the dimming level. It is determined that the number of power-on times for use is 1. The power-on count is stored in the storage unit 13, and the dimming control unit 14 reads the power-on count from the storage unit 13 when the power switch SW is turned on next time. When this on-time Ton is continuously detected, the number of times the power is turned on is incremented once and twice, and after the predetermined number of times (three times in the present embodiment) is reached, the power is turned on the next time the power switch SW is turned on. When the time Ton is equal to or greater than T5 (that is, when the fourth power supply is turned on / off), it is determined that the dimming level reset condition is satisfied, and the dimming level is reset to the fully lit dimming level. .

  By configuring as described above, for example, in a lighting system including a plurality of lighting fixtures, there is variation in the time to detect the on-time Ton for each lighting fixture, and the dimming level of only some of the lighting fixtures is switched. Even when the dimming levels of the respective lighting fixtures vary, it is possible to reset to the same dimming level in all the lighting fixtures. It is desirable that the number of power-on times required to satisfy the dimming level reset condition is smaller than the number of power-on times required to satisfy the cumulative lighting time reset condition. With this configuration, it is possible to prevent the cumulative lighting time from being reset unintentionally in an attempt to reset the dimming level.

(Embodiment 6)
Hereinafter, Embodiment 6 of the lighting device according to the present invention will be described with reference to the drawings. However, since the basic configuration of this embodiment is the same as that of the first embodiment, common portions are denoted by the same reference numerals and description thereof is omitted. In the present embodiment, the on-time Ton necessary for establishing the reset condition for the cumulative lighting time and the on-time Ton necessary for establishing the dimming level switching condition are the same, and the reset condition for the cumulative lighting time is set. The feature is that the number of times of turning on the power necessary to establish the condition and the number of times of turning on the power necessary to establish the dimming level switching condition are different from each other.

  Hereinafter, the operation of the present embodiment will be described with reference to the drawings. As shown in FIG. 9, if the power detection unit 15 detects the on / off of the power switch SW and the on time Ton of the power switch SW is T1 ≦ Ton ≦ T2, the dimming control unit 14 determines the number of times the power is turned on. 1 is determined. The power-on count is stored in the storage unit 13, and the dimming control unit 14 reads the power-on count from the storage unit 13 when the power switch SW is turned on next time. When the on-time Ton is continuously detected, the number of power-on times is incremented once and twice, and when the predetermined number of times (three times in the present embodiment) is reached, the dimming control unit 14 sets the dimming level switching condition. Is determined and the dimming level is switched (here, 50% from full lighting). Next, when the number of power-on times reaches a predetermined number (six times in the present embodiment), the dimming control unit 14 determines that the accumulated lighting time reset condition is satisfied, and resets the accumulated lighting time. At the same time, the dimming level is reset to the initial value (here, all lights up).

  With the configuration described above, when the power switch SW is operated with the intention of switching the dimming level, the cumulative lighting time is not reset, and the power source is intended to reset the cumulative lighting time. When the switch SW is operated, the dimming level is reset at the same time, so that the possibility of erroneously setting the dimming level or erroneously resetting the cumulative lighting time and the dimming level can be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows Embodiment 1 of the lighting device which concerns on this invention, (a) is a block diagram, (b) is a time chart of reset operation | movement of accumulation lighting time. (A) is a time chart which shows the reset operation | movement of the power-on frequency | count in the same as the above, (b) is a time chart which shows the maintenance operation | movement of the power-on count in the same as the above. (A)-(d) is a time chart which shows switching operation | movement of the light control level in the same as the above. It is the schematic which shows an example of the illumination system using the same as the above. (A), (b) is a time chart which shows Embodiment 2 of the lighting device which concerns on this invention. (A)-(c) is a time chart which shows Embodiment 3 of the lighting device which concerns on this invention. It is a figure which shows Embodiment 4 of the lighting device which concerns on this invention, (a) is a block diagram, (b) is the schematic of an illumination system. It is a time chart which shows Embodiment 5 of the lighting device which concerns on this invention. It is a time chart which shows Embodiment 6 of the lighting device which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lighting device 10 Lighting circuit part 11 Output control part 12 Time measuring part 13 Storage part 14 Dimming control part
15 Power supply detection unit AC Commercial power supply (external power supply)
La discharge lamp (light source)

Claims (11)

  A lighting circuit unit that turns on the light source in response to power supplied from an external power source, an output control unit that controls the lighting circuit unit in accordance with a given dimming command value, and performs dimming of the light source, and lighting of the light source A timekeeping unit that measures time, a storage unit that stores the cumulative lighting time and dimming level of the light source, and a dimming command value that corrects the light beam decrease according to the dimming level and cumulative lighting time stored in the storage unit And a power control unit that detects a power supply voltage and detects an on / off state of the power supply. The accumulated lighting time is reset when the power on / off state of the power source is detected, and the dimming level is set when the power source detection unit detects a second power on / off state different from the first power on / off state. With switching to a different dimming level That lighting device.   The power detection unit includes means for measuring at least one of a power ON time and an OFF time, and at least one of the power ON time and the OFF time in the second power ON / OFF state is the first 2. The lighting device according to claim 1, wherein the power-on time and the off-time in the power-on / off state are not always the same as once.   The dimming control unit shifts to a dimming level setting mode in which the operation of switching the dimming level from a predetermined value set in advance discretely or continuously is repeated when the second power on / off state is detected, The dimming level at the time of detecting a third power on / off state different from the first and second power on / off states is stored in the storage unit as a new dimming level. 2. The lighting device according to 2.   In the dimming level setting mode, a limit is set for the number of repetitions of the operation for switching the dimming level, and the dimming control unit sets the dimming level when the third power on / off state is not detected before the limit is exceeded. 4. The lighting device according to claim 3, wherein the control is performed based on the dimming level stored in the storage unit before the mode is ended and the dimming level setting mode is entered.   The dimming control unit sets a dimming level to a predetermined value when a fourth power on / off state different from the first to third power on / off states is detected. The lighting device according to any one of claims 1 to 4.   A load detection unit that detects whether or not the light source is connected, and the dimming control unit is an operation that switches the dimming level to another dimming level when the load detection unit detects that the light source is not connected. The lighting device according to claim 1, wherein the lighting device is invalidated.   The lighting device according to any one of claims 1 to 6, wherein the dimming control unit changes the dimming level from an upper limit value or a lower limit value to a desired value when switching the dimming level. .   8. The lighting device according to claim 1, wherein the dimming control unit changes the dimming level from an upper limit value or a lower limit value to a desired value every time the light source is turned on.   9. The dimming control unit according to claim 7 or 8, wherein the dimming control unit discretely or continuously changes the dimming level from an upper limit value to a desired value, or from a lower limit value of the dimming level to a desired value. The lighting device described.   An appliance main body, a socket housed in the appliance main body to which a light source is detachably mounted, and a lighting device according to any one of claims 1 to 9 for supplying electric power to the light source through the socket. A lighting apparatus characterized by that. 11. A lighting system comprising: the plurality of lighting fixtures according to claim 10; and a power switch that is provided in a path for supplying power to each lighting fixture from an external power source and opens and closes the path.

Images