JP5641824B2 - Lighting device - Google Patents

Description

  The present invention relates to a lighting device that controls a color temperature according to, for example, an outdoor situation.

  There is a technique for performing color temperature control of a lighting device by performing analysis of a temperature state of an illumination environment or analysis of a surface temperature of a human face using an infrared image sensor (see Patent Document 1).

  There is also a technique for controlling the color temperature of the illumination space based on time and season (see Patent Document 2 and Patent Document 3).

  In addition, there is a technique for making the color temperature distribution of the space area of outside light (outdoor light) and the indoor illumination space the same by using an environment detection unit that detects an outdoor environment (see Patent Document 4).

  There is also a technique for detecting the ambient temperature and controlling the color temperature (see Patent Document 5).

JP 2009-021172 A JP 2009-259598 A Japanese Patent Laid-Open No. 04-048586 JP 05-121176 A Japanese Patent Laid-Open No. 03-222291

  However, according to the conventional technology, the color temperature is controlled so that it feels warm when it is cold, the color temperature that it feels cool when it is hot, and the color rendering is used to produce vivid colors in the lighting space. There is a problem that the color temperature cannot be controlled such that the color temperature is controlled to have a proper color temperature.

  An object of the present invention is to realize fine color temperature control with a simple configuration in consideration of actual climate and outside air temperature.

An illumination device according to the present invention is an illumination device including a light source,
A color temperature control unit for controlling the color temperature of the light source by a processing device;
A reference temperature storage unit that stores the reference temperature in a storage device;
The color temperature controller is
A temperature of the outside air is input, a temperature difference between the input temperature of the outside air and the reference temperature stored in the reference temperature storage unit is calculated by a processing device, and the color temperature of the light source is calculated based on the calculated temperature difference It is characterized by controlling.

An illumination device according to the present invention is an illumination device including a light source, and includes a color temperature control unit that controls a color temperature of the light source by a processing device, and a reference temperature storage unit that stores a reference temperature in a storage device, The color temperature control unit inputs a temperature of the outside air, calculates a temperature difference between the input temperature of the outside air and the reference temperature stored in the reference temperature storage unit by a processing device, and calculates the calculated temperature difference. Since the color temperature of the light source is controlled based on the above, it is possible to realize fine color temperature control in consideration of actual climate and outside air temperature with a simple configuration. In addition, when it is necessary to produce the color of the illumination space most, it is possible to perform illumination suitable for it.

3 is a functional block diagram showing functional blocks of a color temperature control system 1100 (illumination apparatus 1000) according to Embodiment 1. FIG. FIG. 4 is a color temperature characteristic diagram showing a change in the color temperature of a day in the color temperature control system 1100 (illumination apparatus 1000) according to Embodiment 1. (A) is a graph showing the transition of the outdoor temperature of the day in spring, summer, autumn and winter and the maximum temperature of the day, and (b) is the outdoor air in the spring, summer, autumn and winter. It is the graph which showed transition of temperature, and temperature at the time of 14:00. 3 is a flowchart showing an operation of a lighting output control circuit 130 according to the first embodiment. 4 is a graph showing a color temperature control function (1) 181 to a color temperature control function (4) 184 included in the color temperature control information 180 (color temperature control function table) according to the first embodiment. Specifics set in color temperature control function (1) 181 to color temperature control function (4) 184 included in color temperature control information 180 (color temperature control function table) according to Embodiment 1 according to Embodiment 1 It is a figure which shows the value of a color temperature after a correct value, actual temperature, and correction | amendment. It is the color temperature characteristic figure in the outside temperature which showed the relationship between the outside temperature (actual temperature) and the color temperature (actual color temperature) of the LED module 200 by which color temperature correction | amendment was shown according to the color temperature control function. It is a graph which shows an example of the concrete temperature change and color temperature change in each color temperature control function. It is the figure which put together the concrete value of the graph shown by FIG. 8 in the table | surface. 6 is a flowchart showing the operation of the lighting output control circuit according to the second embodiment. It is a functional block diagram which shows the functional block of the color temperature control system 1100 (illuminating device 1000) which concerns on Embodiment 3. FIG. 10 is a graph showing a color temperature control function according to Embodiment 3, (a) a graph showing a color temperature control function (outside air temperature) 185, (b) a graph showing a color temperature control function (humidity) 186, and (c) a color. It is a graph which shows a temperature control function (sunshine amount) 187. FIG. 13 is a table in which the color temperature control functions of FIG. 10 is a flowchart showing an operation of a lighting output control circuit 130 in the third embodiment. It is a figure which shows the example of the color temperature change of the day obtained as a result of the operation | movement of the lighting output control circuit which concerns on Embodiment 3, and the change of external temperature, humidity, and the amount of sunlight. It is a figure which shows the example of the color temperature change of the day obtained as a result of the operation | movement of the lighting output control circuit which concerns on Embodiment 3, and the change of external temperature, humidity, and the amount of sunlight. It is a figure which shows the example of the color temperature change of the day obtained as a result of the operation | movement of the lighting output control circuit which concerns on Embodiment 3, and the change of external temperature, humidity, and the amount of sunlight. It is the figure which put together the concrete numerical value of the graph of FIGS. 15-17 in the table | surface.

Embodiment 1 FIG.
FIG. 1 is a functional block diagram showing functional blocks of a color temperature control system 1100 (illumination apparatus 1000) according to Embodiment 1. A functional block of the color temperature control system 1100 (illumination apparatus 1000) will be described with reference to FIG.

  The color temperature control system 1100 includes a lighting device 1000 and an outside air temperature detection element 300. The outside air temperature detecting element 300 is an element that detects the outside air temperature outdoors. The lighting device 1000 includes a lighting power supply device 100 and an LED module 200.

  The LED module 200 includes an LEDa 210 and an LEDb220. LEDa210 is an LED element group with a low LED color temperature, and LEDb220 is an LED element group with a high LED color temperature. That is, LEDa 210 is a warm light source color (warm color light source color), and LEDa 210 is a cool light source color (cold color light source color).

  The lighting device 1000 realizes a desired color temperature as a whole of the lighting device 1000 by controlling two LEDs (LEDa 210 and LEDb 220) having different color temperatures.

  The lighting power supply device 100 includes a DC power supply a110, a DC power supply b120, and a lighting output control circuit 130. The lighting output control circuit 130 includes a clock 140 and a storage unit 150.

  The DC power supply a110 inputs an AC current from a commercial power supply or the like and supplies a constant current to the LEDa210. The DC power supply b120 inputs an AC current from a commercial power supply or the like and supplies a constant current to the LED b220. As shown in FIG. 1, a DC power supply a110 that supplies a constant current to the LEDa 210 and a DC power supply b120 that supplies a constant current to the LED b220 are independent devices. In the illumination device 1000, a desired color temperature is realized by controlling the DC power supply a110 and the DC power supply b120 to control the current supplied to the LEDa210 and the LEDb220. That is, by controlling the balance of the color temperature intensity between the LEDa 210 and the LEDb 220, the LED module 200 configured by the LEDa 210 and the LEDb 220 can realize various color temperatures.

  The DC power supply a110 receives the dimming command a131 from the lighting output control circuit 130, generates a constant current according to the dimming command a131, and outputs it to the LEDa210. The DC power supply b120 receives the dimming command b132 from the lighting output control circuit 130, generates a constant current according to the dimming command b132, and outputs it to the LED b220.

  The LEDa 210 emits light at a warm color temperature by a constant current from the DC power supply a110, and the LEDb 220 emits light at a cold color temperature by a constant current from the DC power supply b120. Then, the color temperatures of the LEDa 210 and the LEDb 220 are combined to obtain the color temperature of the LED module 200.

  The lighting output control circuit 130 includes a processing device (also referred to as a central processing unit (CPU), a central processing device, a processing device, a microprocessor, a microcomputer, etc.) (not shown) that executes a program. ing. The lighting output control circuit 130 is a color temperature control unit that controls the color temperature of the LED module 200 using a processing device.

  The lighting output control circuit 130 includes a storage unit 150 that is a storage device (storage device, storage element, ROM, RAM, or the like). The storage unit 150 includes a color temperature control information storage unit 160, a reference temperature storage unit 161, and a color temperature reference value storage unit 162. The color temperature control information storage unit 160, the reference temperature storage unit 161, and the color temperature reference value storage unit 162 are functional blocks that store information in the storage device. 160, the reference temperature storage unit 161, and the color temperature reference value storage unit 162 store information ".

  The reference temperature storage unit 161 stores a reference temperature 171 used for controlling the color temperature of the LED module 200 in the storage device. The color temperature reference value storage unit 162 stores a color temperature reference value used for controlling the color temperature of the LED module 200 as a color temperature reference value 172 in the storage device. The color temperature control information storage unit 160 associates the difference between the current outside air temperature and the reference temperature 171 (referred to as a temperature difference 190) (predetermined temperature) with a color temperature correction value 191 described later, and the color temperature control information 180. (Color temperature control function table) is stored in the storage device. A color temperature control method using the reference temperature 171, the color temperature reference value 172, the color temperature control information 180, etc. will be described later.

  The lighting output control circuit 130 searches the color temperature control information 180 stored in the color temperature control information storage unit 160 using the temperature difference 190 by the processing device, and the color temperature correction value corresponding to the temperature that matches the temperature difference 190. 191 is acquired. The lighting output control circuit 130 sets a value (corrected color temperature) obtained by adding the acquired color temperature correction value 191 to the color temperature reference value 172 as the color temperature of the LED module 200.

  The lighting output control circuit 130 generates the dimming command a131 and the dimming command b132 so that the color temperature of the LED module 200 becomes the corrected color temperature described above. Then, the lighting output control circuit 130 outputs the dimming command a131 and the dimming command b132 to the DC power supply a110 and the DC power supply b120, respectively.

  In other words, the lighting output control circuit 130 is connected to the outside air temperature detecting element 300, and the lighting output control process is executed by the processing device using the temperature of the outside air acquired by the outside air temperature detecting element 300. The lighting output control circuit 130 inputs the temperature of the outside air using the outside temperature detecting element 300, and calculates a temperature difference 190 between the input outside temperature and the reference temperature 171 stored in the reference temperature storage unit 161 by the processing device. Then, the color temperature of the LED module 200 is determined based on the calculated temperature difference 190. Then, the lighting output control circuit 130 generates the dimming command a131 and the dimming command b132 so that the color temperature determined by the LED module 200 is obtained.

  The lighting output control circuit 130 outputs a dimming command a131 and a dimming command b132 to the DC power supply a110 and the DC power supply b120, respectively. The dimming command a131 is output to the LEDa210, and the dimming command b132 is output to the LEDb220.

  The DC power supply a110 receives the dimming command a131 from the lighting output control circuit 130, and controls the constant current to the LEDa 120 based on the input dimming command a110. The DC power supply b120 receives a dimming command b132 from the lighting output control circuit 130, and controls a constant current to the LED b220 based on the input dimming command b132.

  The LEDa 110 and the LEDb 220 are turned on by currents generated by the DC power supply a110 and the DC power supply b120, respectively, and are controlled to have a desired color temperature as the LED module 200.

  The lighting output control circuit 130 includes a clock 140 (hereinafter also referred to as a time counter) that counts time. The timepiece 140 may not be incorporated in the lighting output control circuit 130. For example, the lighting output control circuit 130 may be configured to obtain information related to time by communication from the outside.

  The lighting output control circuit 130 monitors the information detected by the outside air temperature detection element 300 and the time measured by the clock 140. The lighting output control circuit 130 controls the lighting output of the LEDa 210 having a low color temperature and the LEDb 220 having a high color temperature in the LED module 200 based on the monitored information. The lighting device 1000 counts information detected by the outside air temperature detecting element 300 and the clock 140 in any pattern of every 30 minutes, every hour, every half hour, every two hours, every half hour, and half hours, for example. The time may be monitored and the color temperature control process may be executed.

  In the illuminating device 1000, since the lighting output of LEDa210 and LEDb220 is each controlled, the light color (color temperature) of the light which LED module 200 emits changes. In the lighting device 1000, the clock 140 grasps what time the current time is in the day.

  In the present embodiment, two LEDs having different color temperatures are used as the light source, but the light source is not limited to the LED. A light source such as a fluorescent lamp, an incandescent lamp, or a halogen lamp may be used. Further, the present embodiment can be applied even if there are three light sources, four light sources, or a larger number of light sources than two. In this embodiment, two DC power supplies are used. However, when two or more light sources can be controlled by one DC power supply, one DC power supply may be used.

  Next, the operation of the color temperature control system 1100 will be described. FIG. 2 is a color temperature characteristic diagram showing a change in the color temperature of the day of the color temperature control system 1100 (illumination apparatus 1000) according to the first embodiment. FIG. 3A is a graph showing the transition of the outside air temperature during the day of spring, summer, autumn and winter and the maximum temperature during the day, and FIG. 3B is the graph of spring, summer, autumn and winter. It is the graph which showed transition of the outside temperature of a day, and the temperature at the time of 14:00.

  A change in the color temperature of the day in the color temperature control system 1100 (illumination apparatus 1000) of the present embodiment will be described with reference to FIGS.

  For example, in the color temperature control system 1100 according to the present embodiment, when the outdoor is cold, the color temperature of the light emitted from the LED module 200 is lowered to produce visual warmth, and when the outdoor is hot, the LED module. The color temperature of the light emitted by the 200 is increased to produce visual coolness. In the color temperature control system 1100 according to the present embodiment, by controlling as described above, excessive temperature adjustment by the air-conditioning equipment is suppressed without causing discomfort to the user, and the energy saving effect in the entire building such as a store is achieved. Can be improved.

  However, when a product is illuminated at a store or the like by the color temperature control system 1100, it is also necessary to perform illumination control at a color temperature that can produce the product or the like at the store most attractively. Therefore, it is not always preferable to variably control the color temperature of the light emitted from the LED module 200 according to the outdoor climate. Therefore, as shown in FIG. 2, in the color temperature control system 1100 according to the present embodiment, for example, between 10:00 and 15:00 estimated to have the most customers (hereinafter also referred to as a specific time zone 510) is outdoors. Regardless of the air temperature, the color temperature having the highest color rendering property (for example, 4500 K) may be fixedly output.

  Therefore, in the color temperature control system 1100 according to the present embodiment, for example, as shown in FIG. 2, time zones other than 10 o'clock to 15 o'clock (from 0 o'clock to 10 o'clock and from 15 o'clock to 24 o'clock) are used. The color temperature of the illumination device 1000 is variably controlled according to the outdoor temperature. As shown in FIG. 2, during the period from 0:00 to 10:00, control was performed based on the maximum temperature measured the previous day or the temperature measured at 14:00 the previous day, and from 15:00 to 24:00, the measurement was performed on the day. It is assumed that control is performed based on the maximum temperature or the temperature at 14:00.

  Here, a reference temperature 171 is a reference temperature for controlling the color temperature in a time zone other than 10 o'clock to 15 o'clock (from 0 o'clock to 10 o'clock and from 15 o'clock to 24 o'clock). That is, when the color temperature control system 1100 according to the present embodiment has a system setting of storing the temperature of 14:00 as the reference temperature 171, the reference temperature 171 indicates “the previous day measurement from 0:00 to 14:00”. "14:00 air temperature" is set, and from 14:00 to 24:00, "14:00 air temperature measured on the day" is set as the reference temperature 171.

  Further, when the color temperature control system 1100 according to the present embodiment has a system setting that stores the maximum daily temperature as the reference temperature 171, the reference temperature 171 includes “the previous day” from 0:00 to 10:00. “Maximum temperature measured on that day” is set as the reference temperature 171 from 15:00 to 24:00. Then, in the color temperature control system 1100, when the maximum temperature is reached in the specific time zone 510 in the specific time zone 510, the reference temperature 171 stores the maximum temperature as the highest temperature of the day.

  In the present embodiment, it is assumed that the color temperature control system 1100 has a system setting that stores the temperature at 14:00 as the reference temperature 171. In other words, the color temperature control system 1100 controls the color temperature of the lighting device 1000 from 0 o'clock to the beginning of the specific time zone, using the external temperature at 14:00 the previous day as the reference temperature 171, and during the specific time zone. The color temperature is controlled to the color temperature reference value 172 having high color rendering properties, and the color temperature of the lighting device 1000 is controlled from the end of the specific time zone to 24:00 using the outside air temperature at 14:00 on that day as the reference temperature 171. To do.

  In the color temperature control system 1100, the color temperature control can be changed by changing the time setting of the specific time zone 510. For example, the lighting device 1000 is controlled to a constant color temperature reference value 172 by setting the specific time zone as “14:00 to 14:00” (that is, the specific time zone 510 means 0 hour). Without processing, the color temperature of the lighting device 1000 is controlled from 0 o'clock to 14 o'clock with the external temperature at 14:00 the previous day as the reference temperature 171, and from 14:00 to 24 o'clock the external temperature at 14:00 of the day is controlled. The color temperature of the lighting device 1000 can be controlled as the reference temperature 171.

  In the color temperature control system 1100, the specific time zone 510 may not be set.

  The way the user feels the temperature is considered to differ depending on the season (climate, etc.) even if the temperature is the same. Therefore, in the color temperature control system 1100 according to the present embodiment, for example, as shown in FIG. 3A, the outdoor maximum temperature between 10 o'clock and 15 o'clock is measured, so that the season (weather and climate) is spring. , Summer, autumn, or winter, and a color temperature control method suitable for the season is executed. Alternatively, in the color temperature control system 1100 according to the present embodiment, for example, as shown in FIG. 3B, the outdoor temperature at 14:00 is measured to determine the season, and the color temperature is controlled according to the season. The method may be performed.

  Next, a color temperature control method by the lighting output control circuit 130 according to the present embodiment will be described. FIG. 4 is a flowchart showing the operation of the lighting output control circuit 130 according to the first embodiment.

  First, AC power is supplied to the lighting device 1000 and lighting is started.

  In S110, the lighting output control circuit 130 determines whether or not the current time 530 counted by the clock 140 is a specific time zone 510 (for example, between 10:00 and 15:00).

  When the lighting output control circuit 130 determines that the current time 530 is the specific time zone 510 (Yes in S110), the lighting output control circuit 130 determines that the color temperature of the light emitted from the LED module 200 is a specific color temperature (color temperature). The processing device determines the current value Aa output from the DC power supply a110 and the current value Ab output from the DC power supply b120 so that the reference value 172) (for example, 4500K) is obtained.

  For example, the lighting output control circuit 130 associates the color temperature of the LED module 200 with the current values Aa and Ab output from the DC power supply a110 and the DC power supply b120 for the LED module 200 to realize the color temperature. It is assumed that the temperature corresponding current value table is stored in the storage unit 150. For example, when the LED module 200 is set to a color temperature of 4500K, the lighting output control circuit 130 stores the current value Aa of the DC power supply a110 and the current value Ab of the DC power supply b120 corresponding to the color temperature of 4500K. Is obtained from the color temperature corresponding current value table stored in the table. For example, the lighting output control circuit 130 determines the current value Aa and the current value Ab by the processing as described above.

  The lighting output control circuit 130 generates a dimming command a131 for causing the DC power source a110 to output the current value Aa and a dimming command b132 for causing the DC power source b120 to output the current value Ab. The lighting output control circuit 130 outputs the generated dimming command a131 and dimming command b132 to the DC power supply a110 and the DC power supply b120, respectively.

  In S112, the lighting output control circuit 130 stores the reference temperature as the reference temperature 171 using the outside temperature detected by the outside temperature detection element 300 when the current time 530 counted by the clock 140 reaches a specific time (for example, 14:00). Stored by the unit 161.

  If lighting output control circuit 130 determines that current time 530 is not in specific time zone 510 (No in S110), lighting output control circuit 130 reads reference temperature 171 stored in reference temperature storage unit 161. That is, the lighting output control circuit 130 reads the reference temperature 171 when the current time 530 is before 14:00, and reads the reference temperature 171 when the current time 530 is after 14:00. The reference temperature 171 is the outside air temperature at 14:00 on that day. As described above, when the current time 530 is other than the specific time zone 510, the lighting output control circuit 130 executes processing for controlling the color temperature of the LED module 200 using the read reference temperature 171.

  In S <b> 114, the lighting output control circuit 130 selects a color temperature control function corresponding to the reference temperature 171 from the color temperature control information 180 (color temperature control function table) stored in the color temperature control information storage unit 160.

  Here, the configuration of the color temperature control information 180 (color temperature control function table) will be described. FIG. 5 is a graph showing the color temperature control function (1) 181 to the color temperature control function (4) 184 included in the color temperature control information 180 (color temperature control function table) according to the first embodiment. FIG. 6 shows specific values set in the color temperature control function (1) 181 to the color temperature control function (4) 184 included in the color temperature control information 180 (color temperature control function table) according to the first embodiment. FIG. 6 is a diagram illustrating values of actual temperature and corrected color temperature. The configuration and setting values of the color temperature control information 180 (color temperature control function table) will be described with reference to FIGS.

  The color temperature control information 180 (color temperature information) stored by the color temperature control information storage unit 160 includes a plurality of (four) color temperature control functions (color temperature control functions (1) 181 corresponding to a plurality of temperature ranges. Color temperature control function (4) 184) (color temperature information by temperature range). The lighting output control circuit 130 (color temperature control unit) has a reference temperature 171 out of a plurality (four) of color temperature control functions (color temperature control function (1) 181 to color temperature control function (4) 184). The color temperature control function corresponding to the temperature range to which it belongs is selected. The lighting output control circuit 130 controls the color temperature of the LED module 200 using the selected color temperature control function.

  As shown in FIGS. 5 and 6, the color temperature control information 180 associates the color temperature control function (1) 181 with a temperature range in which the reference temperature 171 (recorded outside air temperature) is 30 ° C. or higher, for example. The color temperature control function (2) 182 is associated with the temperature range in which the reference temperature 171 is 20 ° C. or more and less than 30 ° C., and the color temperature control function (3 for the temperature range in which the reference temperature 171 is 10 ° C. or more and less than 20 ° C. ) 183, and the color temperature control function (4) 184 is associated with the temperature range in which the reference temperature 171 is less than 10 ° C.

  As shown in FIG. 5, the color temperature control information 180 (color temperature control function (1) 181 to color temperature control function (4) 184) has a temperature difference 190 between the reference temperature 171 and the current outside air temperature. This is a function in which a color temperature difference (that is, a color temperature correction value 191) from the color temperature reference value 172 (4500K) is associated.

  The color temperature control function (1) 181 is a graph showing the correspondence between the temperature difference 190 and the color temperature correction value 191 when the outside air temperature is 30 ° C. or higher. “The outside air temperature is 30 ° C. or higher” is generally a temperature range in which people feel hot. Therefore, the color temperature control system 1100 corrects the color temperature to be higher than the color temperature of the color temperature reference value 172 so as to appeal the visual coolness in the building or the like produced by the illumination of the lighting device 1000. It has a positive color temperature correction value 191 (however, when the temperature difference 190 (difference outside air temperature) is −6 ° C. or more).

  The actual temperature and actual color temperature (information enclosed by a dotted line) shown in FIG. 6 are the actual temperature of the outside air when the color temperature of the LED module 200 is corrected using the color temperature control function (1) 181 and the actual temperature of the LED module 200. The correspondence with the actual color temperature is shown. The information on the actual temperature and the actual color temperature describes the corrected result for simplicity, and is not included in the color temperature control function (1) 181.

  The color temperature control function (2) 182 is a graph showing the correspondence between the temperature difference 190 and the color temperature correction value 191 when the outside air temperature is 20 ° C. or higher and lower than 30 ° C. “The outside air temperature is 20 ° C. or more and less than 30 ° C.” is generally in a temperature range in which a person feels comfortable. Accordingly, when the value of the temperature difference 190 is close to 0, the color temperature correction value 192 is set such that the color temperature is not changed with respect to the color temperature of the color temperature reference value 172 (however, the temperature difference 190 (differential outside air temperature) is −2). ℃ to 6 ℃).

  The actual temperature and the actual color temperature (information enclosed by a dotted line) shown in FIG. 5 are the actual temperature of the outside air when the color temperature of the LED module 200 is controlled using the color temperature control function (2) 182, and the actual temperature of the LED module 200. The correspondence with the actual color temperature is shown. The information on the actual temperature and the actual color temperature describes the corrected result for simplicity, and is not included in the color temperature control function (2) 182.

  Compared with the color temperature control function (1) 181, the color temperature control function (2) 182 has a color temperature correction value 191 so that the color temperature is slightly lower (slightly warmer) than the color temperature control function (1) 181. Is set.

  The color temperature control function (3) 183 is a graph showing the correspondence between the temperature difference 190 and the color temperature correction value 191 when the outside air temperature is 10 ° C. or higher and lower than 20 ° C. “The outside air temperature is 10 ° C. or more and less than 20 ° C.” is generally in a temperature range in which a person feels chilly. Accordingly, the negative color temperature correction value 191 for lowering the color temperature with respect to the color temperature of the color temperature reference value 172 is provided so as to appeal the visual warmth in the building or the like produced by the illumination device 1000. (However, when the temperature difference 190 is 16 ° C. or less).

  The actual temperature and actual color temperature (information enclosed by a dotted line) shown in FIG. 5 are the actual temperature of the outside air when the color temperature of the LED module 200 is controlled using the color temperature control function (3) 183, and the actual temperature of the LED module 200. The correspondence with the actual color temperature is shown. The information on the actual temperature and the actual color temperature describes the corrected result for the sake of simplicity, and is not included in the color temperature control function (3) 183.

  The color temperature control function (4) 184 is a graph showing the correspondence between the temperature difference 190 and the color temperature correction value 191 when the outside air temperature is less than 10 ° C. “The outside air temperature is less than 10 ° C.” is generally in a temperature range in which a person feels cold. Therefore, in the case of the color temperature control function (3) 183, the color temperature with respect to the color temperature of the color temperature reference value 172 so as to further appeal the visual warmth in the building or the like produced by the illumination of the lighting device 1000 It has a negative color temperature correction value that makes it lower.

  The actual temperature and the actual color temperature (information surrounded by a dotted line) shown in FIG. 5 are the actual temperature of the outside air when the color temperature of the LED module 200 is controlled using the color temperature control function (4) 184, and the LED module 200. The correspondence with the actual color temperature is shown. The information on the actual temperature and the actual color temperature describes the corrected result for simplicity and is not included in the color temperature control function (4) 184.

  As described above, in the present embodiment, even at the same actual temperature, the color temperature is raised on a hot day (summer) to produce cool lighting, and the color temperature is lowered on a cold day (winter). Thus, color temperature control information 180 (color temperature control function (1) 181 to color temperature control function (4) 184) is set so as to produce a warm illumination.

  Returning to FIG. 4, the description of the operation of the lighting output control circuit 130 will be continued. Hereinafter, a case where the reference temperature 171 is 30 ° C. and the outside air temperature (actual temperature) is 36 ° C. will be specifically described.

  In S114, the lighting output control circuit 130 selects the color temperature control function (1) 181 from the color temperature control information 180 based on the reference temperature 171 (30 ° C.).

  In S115, the lighting output control circuit 130 inputs the current outside air temperature 540 from the outside air temperature detecting element 300 and stores it in the storage device. The lighting output control circuit 130 calculates the difference between the current outside air temperature 540 and the reference temperature 171 by the processing device, and stores the calculation result as a temperature difference 190 in the storage device.

  Specifically, the lighting output control circuit 130 inputs the current outside air temperature 36 ° C. from the outside air temperature detecting element 300 and reads the reference temperature 30 ° C. from the storage unit 150. The lighting output control circuit 130 calculates temperature difference = 36 ° C.−30 ° C. = 6 ° C. by the processing device.

  In S116, the lighting output control circuit 130 calculates (acquires) the color temperature correction value 191 by substituting the temperature difference 190 calculated in S115 for the color temperature control function selected in S114 by the processing device.

  Specifically, the lighting output control circuit 130 acquires a color temperature correction value 1500K corresponding to a temperature difference of 6 ° C. using the color temperature control function (1) 181.

  In S117, the lighting output control circuit 130 adds the color temperature correction value 191 acquired in S116 to the color temperature reference value 172 stored in the storage device by the processing device. The lighting output control circuit 130 sets the corrected color temperature obtained by the addition as the color temperature of the LED module 200.

  Specifically, the lighting output control circuit 130 sets the color temperature 6000K obtained by adding the acquired color temperature correction value 1500K to the color temperature reference value 4500K as the color temperature of the LED module 200.

  In S <b> 118, the lighting output control circuit 130 generates a dimming command a <b> 131 and a dimming command b <b> 132 by the processing device so that the LED module 200 has the corrected color temperature calculated in S <b> 117.

  Specifically, the lighting output control circuit 130 acquires the current value Aa and the current value Ab such that the color temperature of the light emitted from the LED module 200 is the corrected color temperature 6000K calculated in S117 by the processing device. .

  When the LED module 200 is set to a color temperature of 6000K, the lighting output control circuit 130 corresponds to the color temperature corresponding to the current value Aa of the DC power supply a110 corresponding to the color temperature of 6000K and the current value Ab of the DC power supply b120. Obtain from the current value table.

  The lighting output control circuit 130 generates a dimming command a131 for causing the DC power source a110 to output the current value Aa and a dimming command b132 for causing the DC power source b120 to output the current value Ab. The lighting output control circuit 130 outputs the generated dimming command a131 and dimming command b132 to the DC power supply a110 and the DC power supply b120, respectively.

  This is the end of the description of the color temperature control method of the lighting output control circuit 130 in the lighting apparatus 1000.

  FIG. 7 is a color temperature characteristic diagram at the outside air temperature showing the relationship between the outside air temperature (actual temperature) and the color temperature (actual color temperature) of the LED module 200 corrected for color temperature for each color temperature control function. FIG. 8 is a graph showing an example of specific temperature change and color temperature change in each color temperature control function. FIG. 9 is a table summarizing specific values of the graph shown in FIG.

  As described above, according to the color temperature control system 1100 according to the present embodiment, the color temperature is controlled according to the actual climate and the outside air temperature, so that it is cool when it is hot and feels warm when it is cold. Therefore, excessive air conditioning can be avoided, and the amount of electricity used can be reduced to contribute to energy saving. In addition, when it is necessary to produce the color of the illumination space most, it is possible to perform illumination suitable for it.

  As described above, according to the color temperature control system 1100 according to the present embodiment, the lighting apparatus 1000 has the temperature difference 190 (the difference between the outside air temperature (reference temperature 171) at 14:00 and the current outside air temperature 540). Based on the above, the color temperature emitted from the lighting device 1000 (LED module 200) is adjusted. Accordingly, as illustrated in FIGS. 7 to 9, the lighting device 1000 can perform color temperature control according to the season (climate) except for a specific time zone 510 (for example, 10:00 to 15:00). Therefore, the color temperature control system 1100 according to the present embodiment controls the lighting device 1000 to a color temperature according to the season (climate) and the outside air temperature except for a specific time zone 510 (for example, 10:00 to 15:00). As a result, excessive temperature control by air conditioning can be suppressed without causing the person to feel uncomfortable, and an energy saving effect can be exhibited.

  In the color temperature control system 1100 according to the present embodiment, for example, by setting the specific time zone 510 to 0 hours (for example, from 14:00 to 14:00), the color temperature according to the season (climate) and the outside temperature throughout the day. The lighting device 1000 can also be controlled.

  In the color temperature control system 1100 according to the present embodiment, the specific time zone 510 controls the illumination to the color temperature reference value 172, and the outside air during the specific time (for example, 14:00) measured in the specific time zone 510. The temperature is stored in the storage device by the reference temperature storage unit 161 as the reference temperature 171. Since the color temperature is adjusted by the temperature difference 190 between the reference temperature 171 (the outside air temperature stored in the storage unit) and the current outside air temperature 540 except for the specific time zone 510, “the reference temperature 171 is rewritten. As a result, the color temperature suddenly changes and the user feels uncomfortable.

Embodiment 2. FIG.
In the first embodiment, the case where the color temperature control system 1100 (lighting device 1000) performs color temperature control using the outside air temperature at 14:00 as the reference temperature 171 has been described. In the present embodiment, a case will be described in which the color temperature control system 1100 (lighting device 1000) performs color temperature control using the outside air temperature when the temperature reaches the highest level in one day as the reference temperature 171.

  FIG. 10 is a flowchart showing the operation of the lighting output control circuit according to the second embodiment. 10, the same operations as those in FIG. 4 are denoted by the same reference numerals, and the description thereof is omitted. In FIG. 10, the processing of S110 to S111 and the processing of S113 to S118 are the same as those in FIG.

  The lighting output control circuit 130 determines whether the current time 530 counted by the clock 140 is a specific time zone 510 (for example, 10:00 to 15:00) (S110). When the current time 530 counted by the clock 140 is the specific time zone 510 (Yes in S110), the lighting output control circuit 130 controls the DC power supply a110 and the DC power supply b120 to control the color temperature of the light emitted from the LED module 200. Is adjusted to a color temperature reference value 172 (for example, 4500K).

  In S <b> 212, the lighting output control circuit 130 measures the outside air temperature with the outside air temperature detection element 300.

  In S213, the lighting output control circuit 130 determines whether or not it is the first measurement of the outside air temperature after the specific time zone 510 is reached by the processing device. If the lighting output control circuit 130 determines that it is the first measurement of the outside air temperature (Yes in S213), it stores the measured outside air temperature as the reference temperature 171 in the storage device.

  When the lighting output control circuit 130 determines that it is not the first measurement of the outside air temperature (No in S213), that is, when it is the measurement of the outside air temperature for the second time or later after the specific time zone 510 is reached, The lighting output control circuit 130 determines whether or not the measured outside air temperature is higher than the reference temperature 171 by the processing device (S214). When the measured outside air temperature is higher than the reference temperature 171 (Yes in S214), the lighting output control circuit 130 stores the measured outside air temperature in the storage device as the reference temperature 171 and updates the reference temperature 171 (S215). . If the measured outside air temperature is not higher (lower) than the reference temperature 171 (No in S214), the lighting output control circuit 130 does not store the measured outside air temperature in the storage device.

  Alternatively, the lighting output control circuit 130 may determine whether or not the measured outside temperature is higher than the outside temperature at the previous measurement in S214. When the measured outside air temperature is higher than the previous measurement, the lighting output control circuit 130 stores the reference temperature 171 in the storage device, and when the measured outside air temperature is not higher (lower) than the previous measurement. , Do not store in the storage device.

  According to the color temperature control system 1100 of the present embodiment, the lighting output control circuit 130 can specify the outside temperature of the day when the temperature reaches the maximum as the reference temperature 171. Even if the lighting output control circuit 130 performs the above-described operation, the same effects as those of the first embodiment can be obtained.

  In this embodiment, the case where the clock 140 is provided in the lighting output control circuit 130 has been described. However, the lighting 140 can be turned on by passing a personal computer from the outside of the lighting power supply device 100 or receiving a standard radio wave. You may acquire time information from the exterior of the power supply device 100. FIG.

Embodiment 3 FIG.
In the first and second embodiments, the outside air temperature measured by the outside air temperature detecting element 300 is used as an element for determining the outdoor situation. In the present embodiment, a method using outdoor humidity and sunshine amount as an element for determining the outdoor situation will be described.

  The configuration of the color temperature control system 1100 in the present embodiment is the same as the configuration shown in FIG. The color temperature control system 1100 in the present embodiment makes the color temperature during a specific time zone 510 (for example, from 10:00 to 15:00) variable without being fixed. In addition, the color temperature control system 1100 according to the present embodiment monitors the outdoor air temperature, outdoor humidity, and the amount of sunlight to grasp the outdoor climate and weather more precisely.

  FIG. 11 is a functional block diagram showing functional blocks of the color temperature control system 1100 (illumination apparatus 1000) according to the third embodiment. In the present embodiment, the same components as those in the first and second embodiments are denoted by the same reference numerals, and the description thereof is omitted.

  The color temperature control system 1100 includes a solar panel 400 (also referred to as a sunshine amount detection element) that receives sunlight and an outside air humidity sensor 500 that detects outdoor humidity in addition to the configuration of FIG.

  The color temperature control information 180 stored in the storage device by the color temperature control information storage unit 160 includes a color temperature control function (outside air temperature) 185, a color temperature control function (humidity) 186, and a color temperature control function (sunshine amount) 187. Prepare. The configurations of the color temperature control function (outside air temperature) 185, the color temperature control function (humidity) 186, and the color temperature control function (sunshine amount) 187 will be described later.

  The lighting output control circuit 130 monitors information (outside air temperature, amount of sunlight, outside air humidity) detected by the outside air temperature detecting element 300, the solar panel 400, and the outside air humidity sensor 500 and the time measured by the clock 140. The lighting output control circuit 130 controls the lighting output of the LEDa 210 having a low color temperature and the LEDb 220 having a high color temperature, respectively, included in the LED module 200 based on the monitored information (outside air temperature, amount of sunlight, outside air humidity).

  First, the color temperature control system 1100 is based on, for example, an outside air temperature of 25 ° C., a humidity of 60%, and the amount of sunlight at 12:00 on a sunny day in spring. The color temperature control system 1100 sets the reference color temperature to, for example, 4500 K (color temperature reference value 172). The color temperature control system 1100 includes monitored outdoor air temperature, outdoor humidity and sunshine amount data, color temperature control information 180 (color temperature control function (outside air temperature) 185, color temperature control function (humidity) 186, color temperature control function). (Amount of sunlight) 187) is used to calculate a correction value for the color temperature reference value 172 (4500K), and the color temperature reference value 172 (4500K) is corrected using the calculated correction value. To decide.

  FIG. 12 is a graph showing a color temperature control function in Embodiment 3, (a) a graph showing a color temperature control function (outside temperature) 185, (b) a graph showing a color temperature control function (humidity) 186, (C) A graph showing a color temperature control function (sunshine amount) 187. FIG. 13 is a table in which the color temperature control function of FIG.

  As shown in FIG. 12A, the color temperature control function (outside air temperature) 185 is a function in which a color temperature correction value (outside air temperature) 195 is associated with the outside air temperature. Since the color temperature control function (outside temperature) 185 is based on the outside temperature of 25 ° C., the outside temperature in the vicinity of 25 ° C. is associated with the color temperature correction value (outside temperature) 195 “0”.

  As a method for calculating the color temperature correction value (outside air temperature) 195 linked to the outside air temperature, the method described in the first embodiment or the second embodiment may be applied. In this case, a finer color temperature correction value (outside temperature) 195 can be obtained.

  As shown in FIG. 12B, the color temperature control function (humidity) 186 is a function in which a color temperature correction value (humidity) 196 is associated with humidity. Since the color temperature control function (humidity) 186 is based on the outdoor humidity of 60%, the color temperature correction value (humidity) 196 is associated with “0” for the vicinity of the outdoor humidity of 60%.

  As shown in FIG. 12C, the color temperature control function (sunshine amount) 187 is a function in which a color temperature correction value (sunshine amount) 197 is associated with the amount of sunlight. Since the color temperature control function (sunshine amount) 187 is based on the amount of sunlight at 12:00 on a sunny day in spring, a color temperature correction value (sunshine amount) 197 is set for the vicinity of the amount of sunlight at 12:00 on a sunny day in spring. Corresponding to “0”.

  The lighting output control circuit 130 of the color temperature control system 1100 displays the measured outside air temperature, humidity, and amount of sunlight as a color temperature control function (outside air temperature) 185, a color temperature control function (humidity) 186, and a color temperature control function (sunlight), respectively. Substituting into (Amount) 187, a color temperature correction value (outside air temperature) 195, a color temperature correction value (humidity) 196, and a color temperature correction value (sunshine amount) 197 are calculated. The lighting output control circuit 130 of the color temperature control system 1100 converts the calculated color temperature correction value (outside air temperature) 195, color temperature correction value (humidity) 196, and color temperature correction value (sunshine amount) 197 into the color temperature reference value 172. In addition, the color temperature of the LED module 200 is determined.

  FIG. 14 is a flowchart showing the operation of the lighting output control circuit 130 in the third embodiment. In the present embodiment, the lighting output control circuit 130 starts lighting at, for example, 4500K, which is the color temperature of the color temperature reference value 172, at the start of lighting.

  In S <b> 310, the lighting output control circuit 130 acquires the outside air temperature by the outside air temperature detection element 300. The lighting output control circuit 130 substitutes the acquired outside air temperature into the color temperature control function (outside air temperature) 185, and calculates (derived) a color temperature correction value (outside air temperature) 195 corresponding to the acquired outside air temperature (S311). . The lighting output control circuit 130 sets the calculated color temperature correction value (outside air temperature) 195 as “control color temperature 1”.

  In S <b> 312, the lighting output control circuit 130 adds “control color temperature 1” to the color temperature reference value 172 (4500 K) to derive the color temperature (color temperature corrected based on the outside air temperature). The lighting output control circuit 130 stores the derived color temperature (color temperature corrected based on the outside air temperature) as “control result 1” in the storage device.

  In step S <b> 313, the lighting output control circuit 130 acquires outdoor humidity by the outside air humidity sensor 500. The lighting output control circuit 130 substitutes the acquired outdoor humidity for the color temperature control function (humidity) 186, and derives a color temperature correction value (humidity) 196 corresponding to the acquired outdoor humidity (S314). The lighting output control circuit 130 stores the derived color temperature correction value (humidity) 196 in the storage device as “control color temperature 2”.

  In S315, the lighting output control circuit 130 adds the “control color temperature 2” derived in S314 to the “control result 1” stored in S312 and corrects the color temperature (based on the outside air temperature and the outdoor humidity). Derived color temperature). The lighting output control circuit 130 stores the derived color temperature (the color temperature corrected based on the outside air temperature and the outdoor humidity) as “control result 2” in the storage device.

  In S <b> 316, the lighting output control circuit 130 acquires the amount of sunlight by the solar panel 400. The lighting output control circuit 130 substitutes the acquired amount of sunlight for the color temperature control function (sunshine amount) 187, and derives a color temperature correction value (sunshine amount) 197 corresponding to the acquired amount of sunlight (S317). The lighting output control circuit 130 stores the derived color temperature correction value (sunshine amount) 197 in the storage device as “control color temperature 3”.

  In S318, the lighting output control circuit 130 adds the “control color temperature 3” derived in S316 to the “control result 2” stored in S315, and calculates the color temperature (outside air temperature, outdoor humidity, and amount of sunlight). Originally corrected color temperature) is derived. The lighting output control circuit 130 stores the derived color temperature (the color temperature corrected based on the outside air temperature, the outdoor humidity, and the amount of sunlight) as “control result 3” in the storage device.

  In S <b> 319, the lighting output control circuit 130 sets “control result 3” as the corrected color temperature of the LED module 200. The lighting output control circuit 130 controls the DC power supply a110 and the DC power supply b120 so that the corrected color temperature of the lighting apparatus 1000 (LED module 200) becomes “control result 3”.

  In the present embodiment, the lighting output control circuit 130 performs the color temperature correction by measuring in the order of the outside temperature, the humidity, and the amount of sunlight, but the measurement order and the correction order may be other orders. Good.

  15 to 17 are diagrams showing examples of changes in the color temperature of the day and changes in the outside air temperature / humidity / sunshine amount obtained as a result of the operation of the lighting output control circuit according to the third embodiment. FIG. 18 is a table showing specific numerical values for the graph of FIG.

  FIGS. 15A-1 and 15A-2 show changes in color temperature and changes in the outside air temperature, humidity, and amount of sunlight on a certain summer day (sunny). FIGS. 15B-1 and 15B-2 show changes in the color temperature and changes in the outside air temperature, humidity, and amount of sunlight on a certain summer day (all-day rain). As shown in FIG. 15, even in the same season (summer), the color temperature is finely corrected by the outside air temperature, humidity, and amount of sunlight, so that the color temperature can be controlled in consideration of the difference in weather. it can.

  FIGS. 16C-1 and 16C-2 show changes in color temperature and changes in the outside air temperature, humidity, and amount of sunlight on a certain spring day (sunny and midsummer day). FIGS. 16 (d-1) and 16 (d-2) show changes in color temperature and changes in the outside air temperature, humidity, and amount of sunlight on a certain spring day (all-day rain). As shown in FIG. 16, even in the same season (spring), the color temperature is finely corrected according to the outside air temperature, humidity, and amount of sunlight. Therefore, the color temperature can be controlled in consideration of the difference in weather. it can.

  FIGS. 17 (e-1) and (e-2) show changes in the color temperature and changes in the outside air temperature / humidity / sunshine amount on a certain winter day (sunny). As shown in FIG. 17, since the color temperature is finely corrected by the outside air temperature / humidity / sunshine amount, the color temperature can be controlled in consideration of the difference in weather.

  Also in this embodiment, the color temperature control system 1100 uses the lighting device 1000 (LED module 200) in a specific time zone (for example, 10:00 to 15:00) regardless of the season or the like as in the first embodiment. The color temperature may be controlled to be constant (for example, the color temperature reference value 172 (4500K)).

  In addition, as one of the means to grasp the outdoor environmental conditions (weather, climate, etc.), the barometer is used, the barometric pressure is measured with the barometer, and the color temperature is controlled using the measured barometric pressure as one of the control elements. You may do that.

  A color temperature control system 1100 according to this embodiment includes an illumination device 1000 in which two or more types of light sources having different color temperatures are incorporated. The illumination device 1000 includes a lighting power supply device 100 that can independently control the output of each light source and thereby variably control the color temperature. The illuminating device 1000 further includes an outside air temperature detecting element 300, an outside air humidity sensor 500, a sunlight amount detecting sensor such as a solar panel 400, a barometer, a clock 140, and the like. The lighting output control circuit 130 of the lighting device 1000 has two or more types based on information acquired by an outside air temperature detection element 300, an outside air humidity sensor 500, a sunlight amount detection sensor such as a solar panel 400, a barometer, and a clock 140. The color temperature at which the illumination device 1000 emits light is controlled by individually controlling the outputs of the light sources.

  The color temperature control system 1100 according to the present embodiment uses a color temperature at a specific outside temperature, a specific humidity, a specific atmospheric pressure, and a specific amount of sunlight as a predetermined color temperature (for example, a color temperature reference value 172). A predetermined color temperature (for example, a color temperature reference value 172) is corrected and variably changed based on a change from a specific outside air temperature, a specific humidity, a specific atmospheric pressure, and a specific amount of sunlight. To do.

  According to the color temperature control system 1100 according to the present embodiment, when the outdoors is hot, the lighting device 1000 has a color temperature that produces a suitable coolness based on discomfort such as humidity and the amount of sunlight outdoors. Can be controlled. When the outdoors is cold, the lighting device 1000 can be controlled to a color temperature that produces a suitable warmth based on discomfort such as humidity and the amount of sunlight outdoors. Therefore, according to the color temperature control system 1100 according to the present embodiment, excessive temperature control by the air-conditioning equipment can be suppressed without causing discomfort to the person, and an energy saving effect can be exhibited.

  In the present embodiment, the color temperature control method of the lighting output control circuit 130 described in the first and second embodiments may be used as a method for obtaining the color temperature correction value (outside air temperature) 195. In the color temperature control method of the lighting output control circuit 130 according to Embodiments 1 and 2, the color temperature control function (181, 182, 183, 184) corresponding to the reference temperature 171 is selected from the color temperature control information 180. Since this is used for calculating the color temperature correction value, a finer color temperature correction value can be obtained.

  As a method for obtaining the color temperature correction value (humidity) 196, the color temperature control method of the lighting output control circuit 130 described in Embodiments 1 and 2 may be applied. For example, the lighting output control circuit 130 stores the reference humidity corresponding to the reference temperature 171 in the storage device, and stores a plurality of color temperature control functions (humidities) corresponding to the humidity range to which the reference humidity belongs in the storage device. The color temperature control function (humidity) is a function in which a humidity difference from the reference humidity is associated with a color temperature correction value. Accordingly, “temperature” in the color temperature control method of the lighting output control circuit 130 described in the first and second embodiments is replaced with “humidity”, and the color temperature correction value (humidity) 196 is obtained in the same manner. Can do.

  As a method for obtaining the color temperature correction value (sunshine amount) 197, the color temperature control method of the lighting output control circuit 130 described in Embodiments 1 and 2 may be applied. For example, the lighting output control circuit 130 stores a reference sunshine amount corresponding to the reference temperature 171 in the storage device, and a plurality of color temperature control functions (sunshine amounts) according to the sunshine amount range to which the reference sunshine amount belongs in the storage device. Remember. The color temperature control function (sunshine amount) is a function in which a difference in sunlight amount from the reference amount of sunlight is associated with a color temperature correction value. Accordingly, “temperature” in the color temperature control method of the lighting output control circuit 130 described in the first and second embodiments is replaced with “sunshine amount”, and the color temperature correction value (sunshine amount) 197 is set in the same manner. Can be sought.

  As described above, according to the color temperature control system 1100 of the first to third embodiments, human discomfort is grasped including the outdoor environment (weather) such as the outside air temperature, humidity, amount of sunlight, atmospheric pressure, and the like. By producing the color temperature, it avoids human discomfort, produces warm lighting when it is cold, and cool lighting when it is hot, thereby suppressing excessive temperature control by the air conditioning equipment and producing an energy saving effect. be able to.

  Although the first to third embodiments have been described above, two or more of these embodiments may be combined. Alternatively, one of these embodiments may be partially implemented. Or you may implement combining two or more embodiment among these partially.

  100 lighting power supply device, 110, 120 DC power supply, 130 lighting output control circuit, 131 dimming command a, 132 dimming command b, 140 clock, 150 storage unit, 160 color temperature control information storage unit, 161 reference temperature storage unit 162 color temperature reference value storage unit, 171 reference temperature, 172 color temperature reference value, 180 color temperature control information, 181 color temperature control function (1), 182 color temperature control function (2), 183 color temperature control function (3 ), 184 color temperature control function (4), 185 color temperature control function (outside temperature), 186 color temperature control function (humidity), 187 color temperature control function (sunshine amount), 190 temperature difference, 191 color temperature correction value, 195 Color temperature correction value (outside air temperature), 196 Color temperature correction value (humidity), 197 Color temperature correction value (sunshine amount), 200 LED module, 210 LED , 220 LEDb, 300 outdoor air temperature detecting element, 400 solar panel, 500 humidity sensor, 510 a specified time period, 530 the current time, 540 current outside air temperature, 1000 lighting apparatus, 1100 color temperature control system.

Claims (5)

At least one light source;
A color temperature control unit for controlling the color temperature of the light source;
A reference temperature storage unit that stores the reference temperature in a storage device;
The color temperature controller is
Pre-store the color temperature of the light source for a specific time zone,
When it is outside the specific time zone, the temperature of the outside air is input, the temperature difference between the input temperature of the outside air and the reference temperature stored in the reference temperature storage unit is calculated by the processing device, and the calculated temperature Controlling the color temperature of the light source based on the difference;
In the case of a specific time zone, the lighting device controls the color temperature of the light source for the specific time zone stored in advance. The lighting device further includes:
A color temperature reference value storage unit that stores a reference color temperature as a color temperature reference value in a storage device;
A color temperature information storage unit that associates a predetermined temperature with a color temperature correction value and stores the color temperature information as color temperature information in a storage device;
The color temperature controller is
Using the temperature difference, the color temperature information stored in the color temperature information storage unit is retrieved by a processing device to obtain a color temperature correction value corresponding to the temperature that matches the temperature difference, and the obtained color temperature correction The lighting device according to claim 1, wherein the color temperature of the light source is controlled using a value obtained by adding a value to the color temperature reference value. The color temperature information stored in the color temperature information storage unit is:
Color temperature information for multiple temperature ranges corresponding to multiple temperature ranges,
The color temperature controller is
The color temperature information by temperature range corresponding to the temperature range to which the reference temperature belongs is acquired from the plurality of color temperature information by temperature range, and matches the temperature difference using the acquired color temperature information by temperature range. The lighting device according to claim 2, wherein a color temperature correction value corresponding to a temperature is acquired and a color temperature of the light source is controlled. The color temperature control unit further includes:
The illumination device according to any one of claims 1 to 3, wherein a humidity of outside air is input, and a color temperature of the light source is controlled based on the input humidity of the outside air. The color temperature control unit further includes:
The lighting device according to claim 1, wherein a sunshine amount is input, and a color temperature of the light source is controlled based on the input sunshine amount.

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