JPH0997683A - Illumination control device and lighting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a device inexpensive and report the time of lamp replacement by performing the control of preventing the lowering of apparent illumination due to the stain of a lamp without using a real time lock. SOLUTION: A CPU 121 counts the operation clock CK to measure the elapsed time from the point of time of replacement of a lamp not illustrated to the present and store it into an E<2> PROM 126. Also, the CPU 121 compares the stored elapsed time with correction data inside a ROM 123 to output a dimmer signal made by adding a correction value to a dimmer level at every time when the elapsed time passes a predetermined time to a dimmer control part 11a through a dimmer signal output interface 127 and increase the illumination of the lamp with the elapsed time. Also, when the elapsed time reaches the replacement time of the lamp, the CPU 121 puts the dimmer level back to an initial value to lower the illumination of the lamp and report the replacement time of the lamp.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting control device having a function of dimming control of a lamp load and a lighting device using the lighting control device, and particularly, to reduce a change in illuminance caused by contamination of a lamp. Regarding control.

[0002]

2. Description of the Related Art In an illumination control device having a function of controlling the dimming of a lamp load, the apparent illuminance of the illumination control device is lowered due to the attachment of dirt due to long-term use of the lamp. Therefore, correction is performed during the dimming control of the lamp according to the dirt, the illuminance of the lamp is increased to prevent the apparent illuminance from decreasing, and the control is performed to keep the apparent illuminance constant for a long period of time. is there. For this purpose, the elapsed time is measured after a new lamp is replaced, and the illuminance of the lamp is increased stepwise every time the elapsed time has passed a predetermined time to keep the apparent illuminance constant. .

By the way, in order to perform the above control,
It is necessary to measure the elapsed time after replacing the lamp with a new one, but in the past, this was measured using a real-time clock used in a time schedule or the like. However, even though the above-mentioned elapsed time for measuring the degree of contamination of the lamp is not required to be highly accurate, an expensive real-time clock is used. However, there is a problem that a device having a control function for keeping the illuminance constant becomes expensive.

In the conventional lighting control device as described above,
Even if the apparent illuminance is prevented from decreasing due to dirt attached to the lamp and the apparent illuminance is controlled to be almost constant, the lamp must be replaced when it reaches the end of its life. . However, conventionally, this type of lighting control device does not have a function of notifying the replacement time of the lamp, and the administrator replaces the lamp at that time, and even if the lamp becomes dirty immediately after the replacement of the lamp, It is necessary to initialize the device to perform a new control to keep the apparent illuminance constant, which puts a burden on the administrator and misses the time to replace the lamp, causing bulb burnout. There was a problem that it would end up.

Further, in the above-mentioned conventional lighting control device, the administrator can arbitrarily set the initial illuminance immediately after the replacement of the lamp, or the ratio of increasing the illuminance of the lamp according to the contamination of the lamp can be set to the above-mentioned value. It could not be set arbitrarily by the administrator. Further, even if the lamp is dirty, there is no way for the manager to confirm the operating state of the control for making the apparent illuminance substantially constant.

[0006]

As described above, in the conventional lighting control device, the elapsed time after the replacement of the lamp with a new one is predetermined so that the apparent illuminance does not decrease due to the dirt of the lamp. Every time time passes, control is performed to increase the illuminance of the lamp by adding a correction during dimming control of the lamp, but an expensive real-time clock is used to measure the elapsed time, which makes the device expensive. There was a problem that it would become. In addition, conventionally, this type of lighting control device does not have a function of notifying when the lamp should be replaced, and the administrator replaces the lamp when the lamp is replaced, and the lamp becomes dirty immediately after the replacement of the lamp. Also has to initialize the device to newly control the apparent illuminance of the lamp, which imposes a burden on the administrator and misses the time to replace the lamp, causing the bulb to run out. There was a problem that caused such as.

Further, in the above-mentioned conventional lighting control device, the administrator can arbitrarily set the initial illuminance immediately after the lamp is replaced, and the ratio of increasing the illuminance of the lamp according to the contamination of the lamp can be controlled. The person could not arbitrarily set it. Further, even if the lamp is dirty, there is no way for the manager to confirm the operating state of the control for making the apparent illuminance substantially constant. Further, even in the conventional lighting device that lights the lamp by adjusting the amount of power supplied from the power supply to the lamp using the above-described conventional lighting control device,
There are similar problems to be solved that the conventional lighting control device has.

Therefore, the present invention has been made in order to solve the above problems, and prevents the apparent illuminance from being lowered due to the contamination of the lamp without increasing the cost of the apparatus, thereby reducing the apparent illuminance. It can be kept almost constant, the time to replace the lamp can be notified without making the device expensive, and the initialization of the device at that time can be automatically performed.
Further, it is possible to easily set the initial illuminance at the time of replacing the lamp and the rate of increasing the illuminance of the lamp, and easily confirm the operating state of the control for keeping the apparent illuminance constant even if the lamp is dirty. An object of the present invention is to provide a lighting control device that can be used and a lighting device that uses the lighting control device.

[0009]

According to a first aspect of the present invention, there is provided a dimming control section for adjusting the power supplied to the lamp to change the illuminance of the lamp; and a dimming characteristic of the dimming control section. A dimming control signal creating means for creating a dimming control signal;
Time measuring means for measuring the elapsed time from when the lamp is replaced with a new one by using the operation clock of the dimming control signal producing means; and every time the elapsed time measured by the time measuring means reaches a predetermined time. An illuminance correction means is provided for performing control to increase a dimming level that determines the illuminance of the lamp specified by the dimming control signal created by the dimming control signal creating means by a predetermined correction value.

With such a configuration, the dimming control unit adjusts the magnitude of the power supplied to the lamp based on the dimming control signal created by the dimming control signal creating means to adjust the illuminance of the lamp. While performing control to change,
The correction means determines the illuminance of the lamp designated by the dimming control signal every time the elapsed time from when the lamp timed by the timekeeping means is replaced with a new one reaches a predetermined time. By controlling to increase the dimming level by a predetermined correction value, as the elapsed time becomes longer,
The illuminance of the lamp is gradually increased.

According to a second aspect of the present invention, when it is detected that the elapsed time measured by the time measuring means reaches the replacement time of the lamp, the illuminance correction is performed by initializing the elapsed time measured by the time measuring means. There is provided a replacement timing informing means for initializing the control for increasing the dimming level that determines the illuminance of the lamp by the means and for returning the dimming level to the initial dimming level.

With such a configuration, the replacement timing notifying unit initializes the elapsed time when it detects that the elapsed time measured by the time measuring unit has reached the replacement time of the lamp. The control for increasing the dimming level that determines the illuminance of the lamp by the illuminance correcting means is initialized, and the dimming level is returned to the initial dimming level to reduce the illuminance of the lamp and replace the lamp. Notify when it is time.

According to a third aspect of the present invention, the elapsed time measured by the time measuring means is stored in a non-volatile memory,
Further, the illuminance correction means monitors the storage elapsed time of the non-volatile memory and performs control to increase the dimming level that determines the illuminance of the lamp by a predetermined correction value.

With such a configuration, since the non-volatile memory stores the elapsed time from the replacement of the lamp with a new one even after a power failure, the illuminance correction means keeps the non-volatile state even after the power failure is restored. The elapsed storage time of the performance memory is monitored, and control for increasing the dimming level that determines the illuminance of the lamp by a predetermined correction value is continuously performed.

According to a fourth aspect of the present invention, there is provided a first manual operation section, and the elapsed time measured by the time measuring means in response to the operation of the manual operation section is provided separately from the time measurement by the time measuring means. It is provided with a time counting time increasing means for controlling to increase the time by a predetermined time.

With such a configuration, the time counting time increasing means receives the operation of the first manual operation section by the administrator and separates the elapsed time measured by the time counting means from the time counting by the time counting means. In order to perform control for increasing the predetermined time, the illuminance correction means specifies the dimming control signal created by the dimming control signal creating means each time the elapsed time reaches a predetermined time due to the increase of the elapsed time. Control for increasing the dimming level that determines the illuminance of the lamp by a predetermined correction value is performed in a short time.

According to a fifth aspect of the present invention, there is provided a second manual operation section, and in response to an operation of the manual operation section, the dimming control signal created by the dimming control signal creating means specifies the dimming control signal. An initial value setting means for setting an initial value of the dimming level of the lamp is provided.

With this configuration, the initial value setting means receives the operation of the second manual operation section by the administrator, and the dimming control signal created by the dimming control signal creating means specifies the dimming control signal. In order to set the initial value of the dimming level of the lamp, the dimming control unit performs the dimming control of the lamp immediately after replacement based on the set initial value.

According to a sixth aspect of the present invention, there is provided a third manual operation section, and the correction indicating the rate at which the illuminance correction means increases the dimming level of the lamp in response to the operation of the manual operation section. A correction value setting means for setting a value is provided.

With such a configuration, the correction value setting means receives the operation of the third manual operation section by the administrator, and the dimming control signal created by the dimming control signal creating means is used as the information. In order to set the correction value indicating the rate of increasing the dimming level of the lamp, the illuminance correction means sets the illuminance of the lamp that the dimming control signal created by the dimming control signal creating means includes as its information. Control is performed to increase the determined dimming level by the correction value set by the correction value setting means.

According to a seventh aspect of the present invention, there is provided a lighting control device according to any one of the first to sixth aspects; a power supply for supplying power whose size is adjusted by the lighting control device; and an output from the lighting control device. And at least one or more lamps that are turned on by the power.

With such a configuration, the lighting control device according to any one of claims 1 to 6 adjusts the magnitude of the electric power supplied from the power source and outputs the electric power to the lamp, thereby adjusting the lamp. The illuminance of the lamp is increased as the time elapses after the lamp is replaced with a new one, and the illuminance of the lamp is decreased when the lamp replacement time comes, and the replacement time is changed. Notify me.

[0023]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a first embodiment of a lighting device of the present invention using the lighting control device of the present invention. Reference numeral 1 denotes a lighting control device that centrally performs lighting, extinguishing, and dimming of a plurality of lamps 3 by sending controlled power to the lighting circuits 4a to 4c via a transmission line 3, and 2 denotes a lighting control device 1. A power supply for supplying electric power for lighting the lamps 5a-5c, and 3a-3c are transmission lines 4a for transmitting the electric power from the lighting control device 1 to the lighting circuits 4a-4c.
4c are lighting circuits for lighting the lamps 5a-5c using the electric power transmitted through the transmission line 3, and 5a-5c are lamps attached to the lighting circuits 4a-4c.

Here, the lighting control device 1 has a window side dimming control section 11a for dimming control of the lamp 5a, a central dimming control section 11b for dimming control of the lamp 5b, and a wall side dimming control for dimming control of the lamp 5c. Control unit 11c and dimming control units 11a to 11c
A dimming signal control unit 12 for generating a dimming control signal for controlling the dimming characteristics of the above is included, and the dimming control units 11a to 11c are housed in a dimming control panel 13.

FIG. 2 is a block diagram showing an example of a detailed configuration of the dimming signal control unit 12 shown in FIG. Reference numeral 121 is a CPU that creates a dimming control signal that specifies dimming control characteristics of the dimming control units 11a to 11c, 122 is an oscillator circuit that generates an operation clock CK of the CPU 121, and 123 is the CPU 121.
A ROM that stores a program for controlling the illuminance and an illuminance correction table described below, 123 is a RAM that stores data necessary for the operation of the CPU 121, and 125 is the dimming signal control unit 1.
An administrator inputs various settings and operation instructions to 1a to 11c, and a display operation unit that displays various information related to dimming signal control, and 126 is an E ² PRO that stores time information and the like.
M and 127 are dimming signal output interfaces that output dimming control signals created by the CPU 121 to the dimming control units 11a to 11c. Here, the dimming control signal generating means, the time measuring means, the illuminance correcting means, and the replacement timing notifying means are constituted by the programs stored in the ROM 123.

Next, the operation of this embodiment will be described. For example, the window side dimming control unit 11a of the lighting control device 1 adjusts the distribution angle of the current supplied from the power supply 3 by a built-in thyristor or the like according to the dimming control signal output from the dimming signal control unit 12, and outputs the output. The magnitude of the electric power is adjusted, and the electric power whose magnitude is adjusted is transmitted through the transmission line 3 to the lighting circuit 4a.
Output to The lighting circuit 4a lights the lamp 5a using the input power. As a result, the window side dimming control unit 11
The amount of electric power supplied from the power supply 3 to the lighting circuit 4a is adjusted by the lamp, and the lamp 5a is turned on with an illuminance corresponding to the amount of the electric power. Therefore, dimming of the lamp 5a is performed.
The operations of the other central and wall-side dimming control units are similar.

By the way, the lamp 5a constituting the lighting load
As for ~ 5c, the surface becomes dirty and the apparent illuminance decreases with the passage of time after installing a new product. Therefore, the dimming signal control unit 4 corrects the apparent illuminance decrease due to such contamination of the lamps 5a to 5c, and performs control such that the apparent illuminance is kept substantially constant during the period of use of the lamp. There is.

Next, the control for keeping the apparent illuminance constant by preventing the apparent illuminance from being lowered by the dirt of the lamps 5a to 5c by the dimming signal control section 12 will be described with reference to FIG. . First, the CPU 121 measures the elapsed time of one day in this example by performing the operation according to the flowchart shown in FIG. First, in step 501, the clock CK supplied from the transmission circuit 122 is counted every 1 second, and when the count value increases by 1 second, the process proceeds to step 502, and the total count value is 86400 seconds (1 day).
It is determined whether or not the interrupt has occurred, and if not, the interrupt processing ends. When it is 86400 seconds in step 502, the process proceeds to step 503, and E ² PROM1
The time for one day is added to the time stored in 26, and the process is ended. CPU121 is repeated at interrupt a time counting operation as shown in FIG. 5, E ² PRO
The elapsed time in units of one day is stored in M126. It should be noted that, when you replace the lamp 5a~5c with a new, for E ² PROM126 is cleared, the E ² PROM126, lamp 5
The elapsed time from the time of replacing a to 5c with a new one to the present is saved.

Further, the CPU 121 performs the processing according to the flowchart shown in FIG. 6 at least once a day. That is, the CPU 121 determines in step 601 that the E ² PROM 1
The lamp 5a~5c stored in 26 reads the elapsed time from when replaced with a new, against the elapsed time range of illuminance correction table shown in FIG 4 stored in the ROM 123, E ² It is determined whether or not the elapsed time stored in the PROM 126 has updated the elapsed time range step of this illuminance correction table. If not updated, the process proceeds to step 604, where the conventional dimming control signal is supplied to the dimming controller 11a to. Output to 11c. On the other hand, E ² PROM12
If any of the elapsed time range steps of the illumination correction table stored in the ROM 123 is updated, the process proceeds to step 602, and whether the updated time corresponds to the lamp replacement time. Is determined, the process proceeds to step 606 if applicable, otherwise the process proceeds to step 603.

When the process proceeds to step 603, the CPU 12
1 reads out the correction value corresponding to the elapsed time range of the updated step from the illuminance correction table stored in the ROM 123, and then proceeds to step 604. In step 604, the CPU 121 causes the dimming control units 11a to 11c.
A dimming control signal that specifies the dimming level obtained by adding the read correction value to the dimming level of the dimming characteristic is created, and this dimming control signal is dimmed from the dimming signal output interface 127 in step 605. It outputs to the control units 11a to 11c. Accordingly, the dimming control units 11a to 11c generate control signals for increasing the illuminance by the lamps 5a to 5c of the respective loads and the correction value, and output the control signals to the terminals 4a to 4c. As a result, the illuminance of the lamps 5a to 5c increases, so that the apparent illuminance reduction caused by the dirt is restored to almost the original level, and the apparent illuminance becomes substantially constant.

On the other hand, when it is determined in step 602 that the lamp replacement time has come, the CPU 12 operates as described above.
1 proceeds to step 606, clears the elapsed time of the lamps 5a to 5c stored in the E ² PROM 126,
Go to step 607. CPU121 is step 607
Then, after initialization is performed to return the dimming level when the dimming control signal is created to the initial value to which the correction value is not added, the process proceeds to step 605. Therefore, when the process proceeds from step 607 to step 605, the dimming signal output interface 127 outputs the dimming control signal designating the initialized dimming level to the dimming control units 11a to 11c. For this reason, the dimming control units 11a to 11c reduce the power sent to the lighting circuits 4a to 4c by the amount of the initialization of the dimming control signal, so that the illuminance of the lamps 5a to 5c is lowered and the lamps become dark.
This informs the administrator that it is time to replace the lamps 5a to 5c.

FIG. 3 is a graph showing, for example, a temporal change in the illuminance of the lamp 5a by the control operation for preventing the apparent illuminance decrease due to the dirt of the lamps 5a to 5c by the dimming signal controller 12. In this example, the illuminance when the lamp 5a is replaced is 80% by the dimming signal control unit 12.
Has been specified. After the lapse of t1 time, since the illuminance of the lamp 5a is specified by the dimming signal control unit 12 to be 85%, the illuminance of the lamp 5a is increased by 5% compared to the period before that. However, during this time, lamp 5
Since "a" is dirty and the apparent illuminance is lowered, the apparent illuminance is restored to the illuminance immediately after the lamp is replaced by increasing the illuminance by 5% as described above. The same applies below, and the illuminance is 90% after t2 hours have passed. When t3 hours have elapsed, the illuminance is increased to 95%, and the apparent illuminance is prevented from lowering due to dirt on the lamp 5a, so that the apparent illuminance is maintained substantially constant while the lamp is in use. Is done.

When the time to replace the lamp 5a is approaching, the illuminance in the example of FIG. 3 has risen to 95%, so when the time to replace the lamp 5a comes and the CPU 121 initializes the dimming level. , The illuminance of the lamps 5a-5c is 8
The illuminance is reduced to 0%, and the illuminance is darkened by 15%, and the administrator who senses this notices that it is time to replace the lamp 5a.

According to the present embodiment, the time elapsed after the lamp is replaced with a new one is the operation clock C of the CPU 121.
Since the time is measured by K, the control for preventing the apparent illuminance decrease due to the dirt of the lamp can be performed without increasing the cost of the lighting device without using an expensive real-time clock. Further, at that time, since the elapsed time measured by the operation clock CK is stored in the E ² PROM 126, the elapsed time can be retained even if there is a power failure, and the illuminance due to the contamination of the lamp after the power failure is recovered. The control for preventing the decrease can be continued without any trouble.

In this example, the CPU 121 detects the replacement time of the lamps 5a to 5c, and when the replacement time comes, the lamp 5a
By returning the illuminance of the lamp, which has been raised corresponding to the stains a to 5c, to the original initial level and lowering the illuminance of the lamp, it is possible to notify the administrator of the replacement time of the lamps 5a to 5c. As a result, the administrator does not have to perform the work such as calculating the lamp usage time and monitoring the lamp replacement time, and the burden on the administrator can be reduced. Moreover, since the function of notifying the replacement time of the lamp is performed by software and it is not necessary to add any component to the device, it can be performed without increasing the cost of the device.

Here, the CPU 121 controls the lamps 5a to 5c.
When the replacement time of the lamp is detected, an LED or a beeper attached to the display operation unit 125 may be operated to notify the administrator of the replacement time of the lamp. May be.

Further, in this example, when the CPU 121 detects the time to replace the lamp, the CPU 121 initializes the control for preventing the apparent illuminance decrease due to the dirt of the lamp, so that the administrator replaces the lamp. After that, there is no need to perform the operation of performing the initialization, and the burden on the administrator can be reduced.

The dimming signal control unit 12 of the above embodiment is used.
Then, the control for preventing the apparent illuminance decrease due to the dirt of the lamp is collectively performed for all the systems of the lamps 5a, 5b, 5c through the dimming control units 11a, 11b, 11c. It is also possible to individually measure the elapsed time after the replacement and perform the same control for each system.

Further, in addition to the configuration of the illumination device according to the above-described embodiment shown in FIG. 1, when the dimming control unit in the dimming control panel 13 sends a dimming signal to each lighting circuit via a transmission line. A lighting device and a lighting control device configured to perform dimming by adjusting the magnitude of the power of a separately supplied lighting power source based on the dimming signal and sending the power to a lamp of a load based on the dimming signal. With respect to the above, the same effects can be obtained by applying the present invention. An address is assigned to each lighting circuit 4a to 4c, and the dimming control of the lamps 5a to 5c attached to each lighting circuit is separately performed by receiving the dimming signal of the address addressed to itself. It may be one.

FIG. 7 is a block diagram showing a second embodiment of the present invention. In this example, the configuration and operation of the dimming signal control unit of the lighting control device are different from those of the first embodiment, and therefore only the dimming signal control unit is shown. In the figure,
Reference numeral 125 denotes a display operation unit, and in particular, a time display unit 1251 for displaying the time elapsed from the time when the lamp to be controlled is replaced with a new one and an up button 1252 for increasing the elapsed time by the operation of the administrator. It has a reset button 1253 for returning the time to the initial value. The other hardware structure is similar to that of the first embodiment shown in FIG. The time counting time increasing means is composed of a program stored in the ROM 123 shown in FIG.

Next, the operation of this embodiment will be described with reference to the flowchart of FIG. First, the administrator presses the up button 1252 of the display operation unit 125 immediately after exchanging the lamp to be controlled (not shown) for a new one, and the control for preventing the apparent decrease in illuminance due to the dirt of the lamp in this example is performed as predetermined. Work to try to see if it works.

In response to this, the CPU 121 monitors in step 801 whether the reset button 1253 of the display operation unit 125 has been pressed. If it has been pressed, the processing proceeds to step 808, and if not, the processing proceeds to step 802. It is determined whether or not the up button 1252 of the display operation unit 125 has been pressed, and if it is not pressed, step 80
7. If it is pressed, proceed to step 803. CP
In step 803, the U 121 adds 100 hours to the elapsed time stored in the E ² PROM 126, and the addition result is displayed on the time display unit 12 of the display operation unit 125.
51 is displayed.

Thereafter, the CPU 121 refers to the illuminance correction table similar to the illuminance correction table shown in FIG. 4 which lists the correction values in the dimming control from the ROM 123, and the elapsed time of the addition result is stored in this table. It is determined whether or not the step in the elapsed time range has been updated. If not updated, the process proceeds to step 807, and the same dimming control signal as before is output from the dimming signal output interface 127 to a dimming controller (not shown). After that, the process returns to step 801. On the other hand, when the step in the elapsed time range in the table is updated, the process proceeds to step 805, the corresponding correction value is read from the illuminance correction table of the ROM 123, and the process proceeds to step 806 to read the current dimming level. Create a dimming control signal that specifies the dimming level with the correction value. After that, the CPU 121 proceeds to step 807 to output the created dimming control signal from the dimming signal output interface 127 to a dimming controller (not shown), and then returns to step 801.

Each time the administrator presses the up button 1252 of the display operation unit 125, the processing of steps 801 to 807 is repeated, and the elapsed time of the lamp not shown is 10
It is added every 0 hours. If this elapsed time increases, C
By the control for preventing the apparent illuminance decrease due to the dirt of the lamp of the PU 121, the illuminance of the lamp (not shown) rises every time the illuminance correction of the lamp reaches a necessary time, and the apparent illuminance due to the dirt of the lamp is increased. It is possible to confirm whether or not the control for preventing the decrease is performed as specified. When the administrator finishes the above-mentioned confirmation, he or she presses the reset button 1253 of the display operation unit 125.
21 detects this in step 801, and executes step 8
In step 809, the elapsed time stored in the E ² PROM 126 is cleared, the initial value is returned to 0 hours, and the dimming level of the lamp is set to the initial dimming level to which the correction value is not added in step 809. After returning, the processing ends. After that, the same dimming control as that described in the first embodiment and the control for preventing the apparent illuminance decrease due to the dirt of the lamp are performed.

According to the present embodiment, the administrator presses the up button 1252 of the display operation unit 125 immediately after exchanging the lamp to be controlled, and the elapsed time of the lamp stored in the E ² PROM 126 is displayed. By adding the values, it is possible to easily and quickly confirm whether or not the control for preventing the apparent reduction in illuminance due to the dirt of the lamp works well.

In this example, the E ² PROM 12 is also used in the control for preventing the apparent illuminance decrease due to the usual lamp contamination.
The elapsed time within 6 is displayed on the time display unit 1 of the display operation unit 125.
It can also be displayed on the screen 251 to inform the administrator of how much time has passed from the replacement of the lamp to the present.

FIG. 9 is a block diagram showing a third embodiment of the present invention. In this example, a part of the dimming signal control unit of the lighting control device is different from that of the first embodiment, so only the dimming signal control unit is shown. In the figure, reference numeral 125 denotes a display operation unit, particularly a level display unit 1251 for displaying the level of initial illuminance when the lamp to be controlled is replaced with a new one,
Up buttons 1252, 125 for increasing the level
3, down button 1254 to down the level, 1
255, a set button 1256 for setting the set initial level in the device, a mode switching button 1257 for switching the operation mode of the device, and an LED 1258 for notifying the initial illuminance setting mode. Further, the level display section 1251 described above is additionally provided with a system display section showing the currently set lamp system. The other hardware structure is similar to that of the first embodiment shown in FIG. The illuminance correction table shown in FIG. 4 is not stored in the ROM 123 of this example, and the illuminance correction table is E
² Stored in PROM 126. Therefore, the above correction values in the illuminance correction table can be rewritten by the CPU 121. The initial value setting means is composed of a program stored in the ROM 123 shown in FIG.

Next, the operation of this embodiment will be described with reference to the flowchart of FIG. In this example, when the lamp to be controlled is replaced, its initial illuminance can be set to a value desired by the administrator. In this case, the administrator presses the operation mode switching button 1257 of the display operation unit 125,
The CPU 121 is set to the initial illuminance level setting mode. As a result, the CPU 121 determines in step 101 that the mode has switched to the initial illuminance setting mode, proceeds to step 102, lights the LED 1258 of the display operation unit 125, and proceeds to step 103. When the administrator presses the mode switching button 1257 to set the initial illuminance setting mode, the administrator presses the up buttons 1252 and 1253 and the down buttons 1254 and 1255 to set the initial illuminance of the lamp. Since the most standard value of the initial illuminance is stored in the E ² PROM 126 from the beginning, the administrator sets the desired initial illuminance by performing an operation of adding or subtracting a numerical value to or from the standard illuminance value. .

In response to such an operation by the administrator, the CPU 121 determines in step 103 whether or not the up button 1252 is pressed, and if it is pressed, step 10 is executed.
After proceeding to step 4, the initial dimming level stored in the E ² PROM 126 is incremented by 1, and then the routine proceeds to step 111. If the up button 1252 is not pressed in step 103, the process proceeds to step 105. The CPU 121 determines in step 105 whether or not the up button 1253 is pressed. If the up button 1253 is pressed, the process proceeds to step 106, where E
² Set the initial dimming level stored in PROM 126 to +
After 10, the process proceeds to step 111. If the up button 1253 is not pressed in step 105, the process proceeds to step 107.

In step 107, the CPU 121 determines whether or not the down button 1254 is pressed. If the down button 1254 is pressed, the CPU 121 proceeds to step 108 to decrement the initial dimming level stored in the E ² PROM 126 by -1, Go to step 111. Down button 125 in step 107
If 4 is not pressed, the process proceeds to step 109. C
The PU 121 presses the down button 1255 at step 109.
It is determined whether or not is pressed, and if it is pressed, the routine proceeds to step 110, where the initial dimming level stored in the E ² PROM 126 is set to -10, and then the routine proceeds to step 111. If the down button 1255 is not pressed in step 109, the process proceeds to step 111.

When the CPU 121 proceeds to step 111, it reads the initial dimming level stored in the E ² PROM 126 at this point and displays it on the initial level display section 1251 of the display operation section 125. After that, the CPU 121
Determines in step 112 whether the set button 1256 of the display operation unit 125 has been pressed. If so, the process proceeds to step 113, and the dimming level currently stored in the E ² PROM 126 is confirmed. After recognizing the light control level, the process proceeds to step 114. CPU121
Creates a dimming control signal based on the initial dimming level stored in the E ² PROM 126 in step 114,
This dimming control signal is sent to the dimming signal output interface 127.
Is output to a dimming control unit (not shown), and the process ends.

On the other hand, if the set button 1256 is not pressed in step 112, the CPU 121 returns to step 101. The CPU 121 uses the up buttons 1222 and 1223 and the down buttons 1224 and 122 described above.
Each time 5 is pressed, the processes of steps 101 to 112 described above are repeated to rewrite the initial dimming level of the E ² PROM 126, and when the set button 1256 is pressed in step 112, the initial dimming level is changed. After confirmation, the setting of the initial dimming level by the administrator is completed.

After completing the setting of the initial light control level, the administrator presses the mode button 1257. Thereby, the CP
The U121 proceeds to step 115 to display the operation unit 125.
The LED 1258 is turned off to return to the control for preventing the apparent reduction in illuminance due to the usual stain on the lamp, and steps 116, 117 and 118 are executed. At this time, in this example, control is performed so that the illuminance corresponding to the initial dimming level set in the E ² PROM 126 is apparently kept constant despite the dirt of the lamp.

According to the present embodiment, the control for preventing the apparent illuminance decrease due to the dirt of the ordinary lamp is started immediately after the lamp is replaced. However, the initial illuminance of the lamp at this start time is arbitrarily set by the administrator. Can be set to the value of. Therefore, the initial illuminance of the lamp can be set according to the situation, and the usability of the device can be improved. The initial dimming level can be set for each lamp system, and in this case, the display target system is displayed on the display unit 1251.

FIG. 11 is a block diagram showing a fourth embodiment of the present invention. In this example, only a part of the dimming signal control unit of the lighting control device is different from that of the first embodiment, so only the dimming signal control unit is shown. In the figure,
Reference numeral 125 denotes a display operation unit, and in particular, a correction value display unit 1251 for displaying a correction value set by an administrator for increasing the illuminance according to the dirt of the lamp, and an up for increasing the correction value. A button 1252, a down button 1253 for lowering the correction value, a set button 1254 for setting the set correction value in the apparatus,
It has a mode selector switch 1255 for switching between the correction value correction mode and the normal mode, and an LED 1256 for displaying the correction value correction mode. The correction value display section 1251 described above is additionally provided with a system display section showing the system of the lamp whose correction value is being corrected. The other hardware configuration is the same as that of the first embodiment shown in FIG. 2, and therefore the description is omitted. Further, the correction value setting means is the RO shown in FIG.
It is composed of programs stored in M123.

Next, the operation of this embodiment will be described with reference to the flowchart of FIG. In this example, when performing control to maintain the apparent illuminance at the initial illuminance level according to the dirt of the lamp to be controlled, the illuminance of the lamp is changed every predetermined time after the lamp is replaced with a new one. However, the administrator can set a correction value for increasing the illuminance of the lamp to an arbitrary value, and change the increase degree of the illuminance of the lamp according to the situation.

In this case, the administrator presses the mode switching button 1255 of the display operation unit 125 to put the CPU 121 in the correction value setting mode. As a result, when the CPU 121 determines in step 121 that the mode has switched to the correction value setting mode, the CPU 121 proceeds to step 122, lights the LED 1256 of the display operation unit 125, and then proceeds to step 123.
Proceed to. When the administrator presses the mode switching button 1255 described above to enter the correction value setting mode, the up button 125
2. Press the down button 1253 to correct the correction value and set an arbitrary value.

In response to such an operation by the administrator, the CPU 121 determines in step 123 whether or not the up button 1252 is pressed, and if it is pressed, step 12 is executed.
After proceeding to 4, the correction value of the illuminance correction table stored in the E ² PROM 126 is incremented by 1, and then the routine proceeds to step 127. If the up button 1252 is not pressed in step 123, the process proceeds to step 125. CPU12
In step 125, it is determined whether or not the down button 1253 is pressed in step 125. If the down button 1253 is pressed, the process proceeds to step 126, and after the correction value in the illuminance correction table stored in the E ² PROM 126 is decremented by 1, Proceed to step 127. If the down button 1253 is not pressed in step 125, the process proceeds to step 127.

When the CPU 121 proceeds to step 127, the CPU 121 reads out the correction value in the illuminance correction table stored in the E ² PROM 126 at this time, and the display operation unit 1
It is displayed on the correction value display unit 1251 of 25. Then CP
In step 128, the U 121 determines whether or not the set button 1254 of the display operation unit 125 has been pressed. If so, the process proceeds to step 129, and the E ² PROM 1
After recognizing the correction value of the illuminance correction table stored in 26 as the fixed value, the process proceeds to step 130. CPU1
In step 130, 21 creates a dimming control signal based on the illuminance correction table stored in the E ² PROM 126, and outputs this dimming control signal from the dimming signal output interface 127 to a dimming controller (not shown). Then, the process ends.

On the other hand, if the set button 1254 is not pressed in step 128, the CPU 121 returns to step 121. Each time the above-mentioned up button 1252 or down button 1253 is pressed, the CPU 121 repeats the above-mentioned processing of steps 121 to 128 to rewrite the correction value of the illuminance correction table stored in the E ² PROM 126, and step 128 When the set button 1254 is pressed at, the correction value is confirmed, and the setting of the correction value by the administrator is completed.

The administrator presses the mode switching button 1255 when the setting in the illuminance correction table is completed. As a result, the CPU 121 proceeds to step 131, turns off the LED 1256 of the display operation unit 125, returns to the control for preventing the apparent illuminance decrease due to the usual dirt of the lamp, and executes steps 132, 133, and 134. At this time, in this example, the illuminance of a lamp (not shown) is raised every predetermined time by using the set correction value in the illuminance correction table stored in the E ² PROM 126, and the lamp is not affected by the dirt. Instead, the control is performed so as to keep it apparently constant.

According to the present embodiment, since the administrator can set a correction value for increasing the illuminance of the lamp every predetermined time in accordance with the dirt of the lamp, the administrator can set the correction value to the degree of the dirt of the lamp. Accordingly, it is possible to set the rate of increasing the illuminance of the lamp, and it is possible to perform optimal control for preventing the apparent illuminance from being lowered due to dirt on the lamp in accordance with the place of use of the lamp. The above-mentioned correction value can be set for each lamp system.
The target system is displayed at 51.

[0063]

As described above, according to the first aspect of the present invention, the apparent illuminance is kept substantially constant without using the real-time clock to prevent a decrease in the apparent illuminance due to dirt on the lamp. Since it can be held, such an effect can be realized without making the device expensive.
According to the second aspect of the present invention, the control for preventing the apparent illuminance from decreasing due to dirt on the lamp is initialized to reduce the illuminance of the lamp, thereby informing the manager of the replacement time of the lamp. Therefore, the burden on the administrator can be reduced. According to the third aspect of the present invention, even when a power failure occurs, the apparent illuminance can be prevented from lowering due to dirt on the lamp, and the control for keeping the apparent illuminance substantially constant can be continued without any trouble. According to the fourth aspect of the present invention, the operating state of the control for maintaining the apparent illuminance substantially constant by preventing the apparent illuminance from being lowered due to the dirt of the lamp is facilitated by the manual operation of the administrator. You can check. According to the invention described in claim 5, when the apparent illuminance is prevented from being lowered due to the dirt of the lamp and the apparent illuminance is kept substantially constant, the initial illuminance immediately after the replacement of the lamp is performed by the administrator. Can be set manually, and the apparent illuminance to be held can be arbitrarily changed depending on the usage state of the lamp. According to the invention of claim 6, the correction value for determining the rate of increasing the illuminance of the lamp as the lamp becomes dirty can be set to an arbitrary value by the manual operation of the administrator, and the apparent illuminance depends on the usage status of the lamp. Can be held more appropriately. According to the invention described in claim 7, it is possible to prevent the apparent illuminance from being lowered due to the dirt of the lamp without making the apparatus expensive, and to notify the administrator of the replacement time of the lamp. At the same time, the initialization of the control at the time of lamp replacement can be automatically performed, which can reduce the burden on the administrator and further control to keep the apparent illuminance constant even when a power failure occurs. It is possible to continue, and moreover, it is possible to easily confirm the operation state of the control for keeping the apparent illuminance constant, and it is possible to arbitrarily set the initial illuminance immediately after the lamp replacement, and to increase the illuminance of the lamp. Since it can be set arbitrarily, the usability can be significantly improved.

[Brief description of drawings]

FIG. 1 is a block diagram showing a first embodiment of a lighting device of the present invention using a lighting control device of the present invention.

FIG. 2 is a block diagram showing a detailed configuration example of a dimming signal control unit shown in FIG.

FIG. 3 is a characteristic diagram showing a characteristic that the CPU shown in FIG. 2 raises the illuminance of the lamp each time a predetermined time elapses.

4 is a block diagram showing an example of an illuminance correction table stored in a ROM shown in FIG.

FIG. 5 is a flowchart showing an operation in which the CPU shown in FIG. 2 measures the time elapsed since the lamp was replaced with a new one.

FIG. 6 is a flowchart showing control by the CPU shown in FIG. 2 to prevent apparent reduction in illuminance due to stains on the lamp.

FIG. 7 is a block diagram showing a second embodiment of the present invention.

8 is a flowchart showing the operation of the CPU shown in FIG.

FIG. 9 is a block diagram showing a third embodiment of the present invention.

10 is a flowchart showing the operation of the CPU shown in FIG.

FIG. 11 is a block diagram showing a fourth embodiment of the present invention.

12 is a flowchart showing the operation of the CPU shown in FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Lighting control device 2 ... Power supply 3a-3c ... Transmission line 4a-4c ... Lighting circuit 5a-5c ... Lamp 11a-11c ... Dimming control part 12 ... Dimming signal control part 13 ... Dimming control board 121 ... CPU 122 ... Oscillation circuit 123 ... ROM 124 ... RAM 125 ... Display operation unit 126 ... E ² PROM 127 ... Dimming signal output interface

Claims (7)

[Claims] 1. A dimming control unit that adjusts the power supplied to a lamp to change the illuminance of the lamp; and a dimming control signal creating a dimming control signal that determines dimming characteristics of the dimming control unit. Means for measuring the elapsed time from the time when the lamp is exchanged to the present time using the operation clock of the dimming control signal generating means; and the elapsed time measured by the timing means is a predetermined time. And an illuminance correction means for performing control to increase the dimming level that determines the illuminance of the lamp specified by the dimming control signal creation means for each time by a predetermined correction value. A characteristic lighting control device. 2. When the time measuring means detects that the elapsed time has reached the replacement time of the lamp, the time measuring means initializes the elapsed time measured by the time measuring means to reset the lamp by the illuminance correcting means. 2. The lighting control device according to claim 1, further comprising a replacement timing notifying unit that initializes control for increasing the dimming level that determines the illuminance and performs control for returning the dimming level to the initial dimming level. . 3. The non-volatile memory stores the elapsed time measured by the time measuring means, and the illuminance correction means monitors the storage elapsed time in the non-volatile memory,
The lighting control device according to claim 1, wherein control is performed to increase a dimming level that determines the illuminance of the lamp by a predetermined correction value. 4. A control comprising a first manual operation section, and in response to an operation of the manual operation section, increasing the elapsed time measured by the time measuring means by a predetermined time separately from the time measurement of the time measuring means. The lighting control device according to claim 1, further comprising a timed time increasing means for performing the following. 5. A dimming level of the lamp, which is provided with a second manual operation part, and which is operated by the manual operation part to specify a dimming control signal created by the dimming control signal creating means. The lighting control device according to claim 1, further comprising an initial value setting means for setting an initial value of. 6. A correction comprising a third manual operation part, and in response to an operation of the manual operation part, the illuminance correction means sets the correction value indicating a rate of increasing the dimming level of the lamp. The lighting control device according to claim 1, further comprising a value setting means. 7. The lighting control device according to claim 1, a power supply for supplying power whose size is adjusted by the lighting control device, and lighting by the power output from the lighting control device. An illumination device comprising at least one lamp.