JP5269509B2 - Lighting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an illumination device capable of obtaining illumination corresponding to a season. <P>SOLUTION: Since the device changes the color of illumination by adjusting output of a plurality of light sources 15R, 15G, 15B having different colors according to a season such as the summer when the length of daytime is longer than a certain time and the winter when the length of night is longer than a certain time, illumination with a sense of season can be obtained. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to an illumination device that can change the color of illumination light.

  Conventionally, an illuminating device that adjusts the color of illumination light by adjusting light sources of a plurality of colors has been proposed (for example, see Patent Document 1).

  As shown in FIG. 5, in the illuminating device 100 described in Patent Document 1, the illuminating lamps 101A to 101N that can illuminate with an arbitrary illumination color and brightness, and these illuminating lamps 101A to 101N based on changes in environmental parameters around the apparatus. And a power supply unit 103 for supplying power for the control unit 102 and power for the illumination lamps 101A to 101N. Each of the illumination lamps 101 </ b> A to 101 </ b> N is connected to the power supply unit 103 in parallel by a power supply line 104.

  The illuminating unit 105 in each of the illuminating lamps 101A to 101N includes a plurality of light sources 106 of different emission colors, and the driving unit 108 is based on lighting data transmitted from the control unit 102 via the signal line 107. Control lighting. Each of the illuminating lamps 101A to 101N includes a power supply unit 109 that supplies power supplied from the power supply unit 103 via the power supply line 104 to each circuit.

Further, the control unit 102 includes an environment sensor unit 110 that detects an environmental parameter at the installation location of the lighting device 100, a determination unit 111 that determines appropriate illumination based on a change in the environmental parameter detected by the environment sensor unit 110, It has the output part 112 which outputs the lighting data for performing the suitable illumination determined by the determination part 111 to each illumination light 101A-101N via the signal wire | line 107. Thereby, the illumination according to the environmental parameter is performed.
JP 2001-126508 A (FIG. 1)

  By the way, it is desirable to perform illumination according to the season by changing the color of the illumination light according to the change of the season, for example, by emitting cool color light in summer and emitting warm color light in winter. However, when judging based on ambient brightness, there is a problem that the lighting may not always correspond to the season depending on the weather.

  The present invention has been made to solve the conventional problems, and an object of the present invention is to provide an illumination device capable of obtaining illumination corresponding to the season.

The illumination device of the present invention has a plurality of light sources with different colors of emitted light, and changes the color of the illumination light by adjusting the output of the plurality of light sources according to the length of day and night , the daytime long season long, the color of the illumination light is adjusted to cold colors, the long season long night, to adjust the color of the illumination light to the warm, in a day for a period of time The daytime or night length is detected and recorded by the brightness sensor , and recording is continued every day thereafter, and the recorded daytime or night length is compared with the reference value. If there is a season that occupies more than the reference number of days in the certain period including the day when the record is updated, the color of the illumination light is set to be more than the reference number of days. It has a configuration shall be the color that corresponds to the season, which accounts for.

With this configuration, the output of multiple light sources with different colors can be adjusted according to the season, such as summer when the day length is longer than a certain time or winter when the night length is longer than a certain time. Since the color of the illumination light is determined, it is possible to obtain a seasonal illumination.
With this configuration, the color of the illumination light is adjusted so that it becomes a cold color in summer when the day length is longer than a certain time, and a warm color system in winter when the night length is longer than a certain time Because it is adjusted so that it becomes the color of the light, it can provide lighting that feels cool in summer and warm in winter.
With this configuration, when determining seasons such as summer or winter from the length of daytime or nighttime, it is determined by measuring multiple times over a certain period, so the exact season can be grasped regardless of the climate be able to.

  The present invention adjusts the output of a plurality of light sources having different colors according to the season such as summer in which the day length is longer than a certain time or winter in which the night length is longer than a certain time. Since the color of the illumination light is determined, it is possible to provide an illumination device having an effect that it is possible to obtain illumination with a sense of the seasons.

Hereinafter, an illumination device according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing an illumination device according to an embodiment of the present invention, FIG. 2 is a time chart showing the color of illumination light according to the season, FIG. 3 is a graph showing a criterion for determining the season, and FIG. It is a time chart which shows the timing which changes the color of light.

  As shown in FIG. 1, the lighting fixture 10 concerning this invention is attached and used outdoors, such as the wall 11 of an entrance, for example. The lighting fixture 10 is provided with, for example, a brightness sensor 14 that detects ambient brightness outside the fixture body 12 having a bottomed cylindrical shape. Inside the instrument main body 12, three color light sources of red LED 15 R, green LED 15 G, and blue LED 15 B having different illumination light colors are attached as a plurality of light sources 15 in a replaceable manner. Moreover, the control part 13 which controls the whole lighting fixture 10 is provided, and the control part 13 is provided with the timer (illustration omitted) which has a calendar function. Moreover, the cover 16 is provided in the front surface of the instrument main body 12 so that attachment or detachment is possible.

  Therefore, by adjusting the output (brightness) of the red LED 15R, the green LED 15G, and the blue LED 15B that are the three color light sources under the control of the control unit 13, the color of the illumination light emitted as the lighting fixture 10 is changed to an arbitrary color. Can be set.

  As the color of the illumination light corresponding to the season, for example, as shown in FIG. 2, the summer-winter half year of the year is a cold-blue pale color, and the winter-summer half year is a warm orange color. can do. Alternatively, the color of the illumination light can be changed at the boundary between spring and summer and at the boundary between autumn and winter.

  In order to determine the season, for example, as shown in FIG. 3, the ambient brightness is detected by the brightness sensor 14 at regular intervals (for example, 1 hour) every day, and the season brightness is more than the predetermined brightness. The length of the day is obtained from the number of times it was detected that it was a bright daytime. Then, for example, it can be determined that the daytime is 13 hours or more, summer, 11-13 is spring or autumn, and 11 hours or less is winter.

  When changing the color of the illumination light according to the season, as shown in FIG. 4, the color of the illumination of the last day is determined by using the determination of the season for a certain period (for example, two weeks) detected and stored in advance. Is a color corresponding to a season that occupies more than half of the two weeks traced back. In FIG. 4, in the two weeks of period A, the day determined to be spring is 7 days and half (7/14), so the color of the illumination light on the final day D1 does not change, and a warm color suitable for spring The color is orange. In addition, in the two weeks of period B in FIG. 4, the date determined to be spring is 6 days, the date determined to be summer is 8 days, and the date determined to be summer is more than half (8/14). Therefore, on the final day D2, the color of the illumination light is changed to a cold blue-white color suitable for summer.

  As described above, according to the lighting fixture 10 according to the present invention described above, the color changes depending on the season such as summer in which the length of day is longer than a certain time or winter in which the length of night is longer than a certain time. Since the color of the illumination light is changed by adjusting the outputs of the different light sources 15R, 15G, and 15B, it is possible to obtain a seasonal illumination.

  Also, adjust the color of the illumination light so that it is a cold color in summer when the day length is longer than a certain time, and a warm color in winter when the night length is longer than a certain time Because it is adjusted so that it can be, it can provide lighting that feels cool in summer and warm in winter.

  Furthermore, when judging seasons such as summer and winter from the length of daytime and nighttime, the judgment is based on the length of daytime or night recorded retroactively for a certain period of time, so it depends on the climate of the day. Without knowing the exact season.

In addition, the illuminating device of this invention is not limited to embodiment mentioned above, A suitable deformation | transformation, improvement, etc. are possible.
For example, in the above-described embodiment, a pale color is adopted as the cold color system and an orange color is adopted as the warm color system, but the present invention is not limited to this.

The perspective view which shows the illuminating device concerning embodiment of this invention. Time chart showing the color of illumination light according to the season Graph showing the criteria for determining the season Time chart showing the timing to change the color of the illumination light Block diagram showing the configuration of a conventional lighting device

Explanation of symbols

10 Illuminator 15R Red LED (light source)
15G green LED (light source)
15B Blue LED (light source)

Claims (1)

Having a plurality of light sources with different colors of emitted light ,
Change the color of the illumination light by adjusting the output of the plurality of light sources according to the length of day and night ,
In the season when the daytime is long, the color of the illumination light is adjusted to a cold color system,
In the season when the night is long, the color of the illumination light is adjusted to a warm color system ,
Detect and record the length of daytime or nighttime with a brightness sensor over a period of time , and continue recording every day thereafter.
Compare the recorded day length or night length with the reference value to determine the season every day,
In including the day on which recording is updated the predetermined period, when there is a season account for more than the number of days as a reference, the color of the illumination light shall be the color corresponding to the season, which accounts for more than the number of days comprising said reference A lighting device characterized by that.

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