JP2006228530A - Illumination system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an illumination system for realizing a comfortable illumination environment that is preferable for the rhythm of a living body at low costs. <P>SOLUTION: A controller 5 sets control target illuminance so that the environment illuminance of a room H becomes high at a first time zone from prescribed time in the morning after sunrise to time near noon along the rhythm of a living body, sets the control target illuminance so that the environment illuminance of the room H becomes low at a second time zone from prescribed time before and after sunset to prescribed time in the nighttime, and adjusts the quantity of outdoor daylight taken into the room H by controlling the opening/closing of an electric blind 3 so that the environment illuminance measured by an illuminometer 4 becomes the control target illuminance. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an illumination system that performs illumination in accordance with a biological rhythm.

  An illumination system corresponding to a biological rhythm (circadian rhythm) has been conventionally provided (for example, Patent Document 1).

This lighting system includes a lighting fixture that can obtain high-illuminance light, medium-illumination light, and low-illuminance light, and a control device that performs lighting control of the lighting fixture. The first time zone from to the evening is high illuminance light, and the second time zone B from the evening to going to bed at night is lower in average illuminance on the time axis than the maximum illuminance in the first time zone A In the third time zone C from bedtime to morning in the illuminance light, low illuminance light having a lower average illuminance than the maximum illuminance value in the second time zone is generated.
JP 2000-252084 A (paragraph numbers 0015, 0032, 0033)

  The lighting system disclosed in Patent Document 1 described above is configured to obtain desired illuminance by the output light of the luminaire, and requires a large number of luminaires to obtain a high illuminance environment. There was a problem that the energy consumption when obtaining was large.

  In addition, since ambient light is not taken into consideration, there is a problem that when a medium or low illuminance environment illuminance is obtained by a lighting fixture, a feeling of comfort is reduced due to a contrast with the ambient illuminance.

  The present invention has been made in view of the above points, and an object of the present invention is to provide an illumination system that realizes a comfortable illumination environment preferable for a biological rhythm at a low cost.

  In order to achieve the above-mentioned object, in the invention of claim 1, a blind provided in a window portion of a room to be installed, a lighting fixture provided in the room to be installed, and a control for controlling opening and closing of the blind And an illuminance measuring means for measuring the ambient illuminance of the room, and the control means is arranged in a first time zone from a predetermined time in the morning to a time near noon along the biological rhythm. The control target illuminance is set so that the illuminance is high, and the control target illuminance is set so that the ambient illuminance of the room is low in the second time zone from the predetermined time before and after sunset to the predetermined time at night. The external light amount to be taken into the room is adjusted by opening and closing the blind so that the environmental illuminance measured by the illuminance measuring means becomes the control target illuminance.

  According to the first aspect of the present invention, it is possible to make the illuminance appropriate for the entire day, mainly by opening and closing the blinds, and to improve the arousal level as a result. In particular, the use of external light as a resource for obtaining high illuminance can reduce the number of lighting fixtures and reduce the energy consumed by the lighting fixtures. Therefore, it is possible to realize a comfortable lighting environment at a low cost, and it is possible to obtain a low-light environment illuminance by closing the blind without reducing the comfort feeling due to the contrast with the ambient illuminance.

  According to a second aspect of the present invention, in the first aspect of the invention, the luminaire is a dimmable luminaire, wherein the control means controls the ambient illuminance by controlling the opening / closing angle of the blind slats. When the illuminance does not reach, the light output of the luminaire is controlled so that the environmental illuminance becomes the control target illuminance.

  According to the second aspect of the present invention, the necessary environmental illuminance can be obtained even when the illuminance due to outside light is insufficient due to cloudy weather or when the illuminance fluctuates.

  According to a third aspect of the invention, in the first or second aspect of the invention, the lighting fixture is a lighting fixture capable of controlling a color temperature of output light, and the control means has a color temperature of output light of the lighting fixture. The lighting apparatus is controlled so that a high color temperature is obtained in the first time zone and a low color temperature is obtained in the second time zone.

  According to the invention of claim 3, it is possible to provide a more favorable lighting environment for the biological rhythm.

  The present invention can realize an illumination environment that can maintain the natural biological rhythm of human beings, such as improving the arousal level, by making the illuminance appropriate throughout the day mainly by opening and closing the blind. The use of external light as a resource for obtaining high illuminance can reduce the number of lighting fixtures and reduce the energy consumption of the lighting fixtures. It is possible to realize a simple illumination environment, and it is possible to obtain a low illuminance environment illuminance without reducing the comfort due to the contrast with the ambient illuminance by closing the blind.

  The present invention will be described below with reference to an embodiment.

  As shown in FIG. 1, the lighting system of the present embodiment includes, for example, ambient lighting devices 1 arranged on a ceiling portion of a room H such as an office, and a working lighting device 2 disposed on a desk D or the like. ..., an electric blind 3 that is arranged in the window W of the room H and adjusts the amount of external light that enters the room H from the window W, an illuminometer 4 that measures the ambient illuminance in the room H, and system control It is comprised with the controller 6 which is a control means which performs a process.

  The lighting fixtures 1 and 2 are provided with a dimming function in which the light output is varied by a control signal from the outside and a function in which the color temperature of the output light is changed. Specifically, the color temperature is switched by, for example, a daylight white light source (not shown) that emits high color temperature light (5000 K close to sunlight) and a light bulb color light source that emits low color temperature light (3000 K close to the light bulb color). The light source is switched under the control of the controller 2 so that the color temperature of the output light can be changed.

  As shown in FIG. 2, the controller 5 receives a wireless signal transmission unit 50 that transmits a control signal to the lighting fixture 2 by a wireless signal using infrared light or radio waves, and the illuminometer 4 sends a similar wireless signal. A wireless signal receiving unit 51 for receiving incoming illuminance measurement data, a wired signal transmitting unit 52 for transmitting a control signal in a wired manner to the luminaire 1 and the electric blind 3 through the signal line 6, and a control target illuminance in accordance with a time zone described later The lighting fixtures 1 and 2 and the electric blind 3 are controlled to be opened and closed so that the environmental illuminance measured by the illuminometer 4 matches the control target illuminance, and the color temperature corresponds to the time zone. A control processing unit 53 that switches and controls the color temperature of the output light of the lighting fixtures 1 and 2, a time zone setting clock unit 54, and a storage unit 55.

  The electric blind 3 is configured such that the opening / closing angle of the wing plate portion 3 a can be changed electrically, and the opening / closing angle is continuously controlled by a control signal of the controller 5.

  It is assumed that the luminaire 2 includes a receiving unit that receives and demodulates control signals, and the illuminance meter 4 includes a transmitting unit that transmits illuminance measurement data.

  Next, the operation of this embodiment will be described based on the flowchart of FIG.

  First, the controller 5 checks the time measured by the clock unit 54 by the control processing unit 53 during standby of the system (step S1), and activates the system when a predetermined morning time (for example, 8:30) is reached (step S1). After this activation, the control processing unit 53 refers to the control logic <Table 1> stored in the storage unit 55 to determine the control method and the control target illuminance (step S2), and the electric blind 3 or / and the lighting fixture The control of 1 and 2 is started. This control is performed with reference to the control logic periodically (for example, about several minutes to one hour) based on the time measured by the clock unit 54.

  Here, the first time zone is set from 8:30 when the system starts up to 12:30 in the afternoon, and in this first time zone, the biological rhythm of human beings is added by the addition of high illuminance light. In order to obtain the effect of adjusting, the control target illuminance is set to 1000 lx or more, and the color temperature is set to a high color temperature (5000 K) having a physiological awakening action.

  Thus, when the control processing unit 53 of the controller 5 starts the control processing with reference to the control logic of the first time zone, it acquires the ambient illuminance obtained from the measurement data of the illuminometer 4 in step S3, and in step S4. First, control of the electric blind 3 is started. In step S5, the environmental illuminance is compared with the control target illuminance, and if the environmental illuminance does not match the control target illuminance, the process of controlling the electric blind 3 in the direction in which the wing plate portion 3a opens is repeated.

  As the electric blind 3 is opened, ambient light enters the room H, and the ambient illuminance increases as the opening angle of the blade 3a of the electric blind 3 increases. Eventually, when the environmental illuminance coincides with the control target illuminance (1000 lx), the control processing unit 53 stops the control of the electric brand 3 at that time, maintains the open angle of the wing plate 3a at that time, and the first step in step S6. After the time zone end determination process in step 2, the process returns to step S2. Since sunlight has a color temperature of approximately 5000K, the interior of the room H can be illuminated with external light having a desired color temperature.

  When the ambient light intensity does not reach the control target illuminance even when the electric blind 3 is fully opened due to cloudy weather, rain, or the like, the control processing unit 53 turns on the luminaires 1 and 2 to control the environmental illuminance. The light output of each lighting fixture 1 and 2 is controlled until it becomes illumination intensity. At this time, in order to set the color temperature in the first time zone to 5000K, the light source used by controlling the lighting fixtures 1 and 2 is a daylight white light source. In this way, in the first time zone, the electric blind 3 is opened, outside light is taken into the room H, and illumination based mainly on outside light is performed. Thereafter, the control processing unit 53 periodically refers to the control logic of the first time zone and controls the electric blind 3 and the lighting fixtures 1 and 2 by using the control logic until the first time zone ends. .

  By the way, since the sun rises with time, the amount of external light entering the room H also increases, and the environmental illuminance measured by the illuminometer 4 also exceeds 1000 lx, but the control target illuminance at the first time zone is 1000 lx. Therefore, the measured environmental illuminance satisfies the control target illuminance, whereby the control processing unit 53 does not perform opening / closing control of the electric blind 3.

  On the other hand, when the amount of external light decreases due to weather changes or an increase in cloud cover, the control processing unit 53 performs control so that the opening angle of the wing plate portion 3a of the electric blind 3 is increased so that the environmental illuminance is set to 1000 lx, which is the control target illuminance. Let it be maintained. Of course, when the electric blind 3 is already fully opened, the control processing unit 53 controls the light output of the lighting fixtures 1 and 2 so that the environmental illuminance becomes the control target illuminance.

  Next, when the clock time of the clock unit 54 reaches 12:30, the control processing unit 53 refers to the control logic of the third time zone (12:30 to 17:00) as the control logic, and the control logic Start control. The control logic in the third time zone is based on the office lighting environment, and the control target illuminance is set to 700 lx, and the color temperature is set to 5000 K, which is the same as that in the first time zone.

  Since the third time zone is an afternoon time zone in which the external light amount increases, the external light amount is obtained at the opening angle of the wing plate portion 3a of the electric blind 3 in which the environmental illuminance is the control target illuminance in the first time zone. Increases, and the ambient illuminance becomes higher than the control target illuminance in the third time zone. Therefore, the control processing unit 53 controls the electric blind 3 in the closing direction so that the opening angle of the wing plate 3a of the electric blind 3 is reduced to reduce the external light amount entering the room H, and the environmental illuminance becomes the control target illuminance. Stop control at that point. Of course, when the outside light quantity is not enough, such as cloudy sky, and it is judged that the ambient illuminance is not the control target illuminance only with outside light, the light output of the lighting fixtures 1 and 2 is controlled without closing the electric blind 3. Control is performed so that the ambient illuminance becomes the control target illuminance. Also in this case, a daylight white light source is used as the light source of the lighting fixtures 1 and 2 so that the color temperature is 5000K.

  And until the 3rd time slot | zone is complete | finished, the control process part 53 performs the control of the electric blind 3, and the control of the lighting fixtures 1 and 2 with reference to the control logic of a 3rd time slot | zone regularly. When the ambient light intensity fluctuates in the middle of the time zone and the environmental illuminance exceeds 7001x of the control target illuminance or becomes below, the open / close control of the electric blind 3 is performed to set the environmental illuminance to 700 lx of the control target illuminance. Of course, when the ambient light is reduced due to the change in weather or the amount of clouds, and the ambient illuminance does not become 700 lx only by the external light, the control processing unit 53 compensates the external light by controlling the light output of the lighting fixtures 1 and 2.

  When the time measured by the clock unit 54 reaches 17:00, the control processing unit 53 refers to the control logic of the second time zone (17:00 to 22:00) as the control logic, and the control logic Start control. Since this third time zone is a time zone where it is necessary to suppress stimulating light whose biological rhythm is distorted, the control logic of this time zone has a control target illuminance of 450 lx, and the color temperature also has a physiological awakening effect. The color temperature is as low as 3000K.

  Accordingly, in this second time zone, the control processing unit 53 fully closes the electric blind 3 to prevent ambient ambient light from entering the room H, and illumination is performed so that the ambient illuminance becomes 450 lx, which is the control target illuminance. Controls the light output of the instruments 1 and 2. At this time, the luminaires 1 and 2 are controlled so that the color temperature is 3000K, and the light source used is the light bulb color light source. In the second time zone, the electric blind 3 is opened until the sunset time and external light is taken in, and after the sunset time has elapsed, the electric blind 3 is fully closed so that it is not affected by the external light. The light output of the luminaires 1 and 2 is controlled exclusively so that the total measured illuminance, that is, the environmental illuminance becomes the control target illuminance. In the determination of step S6, when the time measured by the clock unit 54 exceeds 22:00, that is, when the second time zone ends, the system enters a standby state until the next morning start-up. If there are lighting fixtures 1 and 2 that are lit, they are turned off under the control of the control processing unit 53.

  As described above, in this embodiment, the control processing unit 53 of the controller 5 controls the electric blind 3 and the lighting fixtures 1 and 2 with reference to the control logic corresponding to the time zone corresponding to the time measured by the clock unit 54, It provides an illumination environment consisting of illuminance and color temperature appropriate for the lifestyle rhythm.

  When the time zone is changed, the open / close state of the electric blind 3 and the light output state of the lighting fixtures 1 and 2 are set to about 10 minutes to 1 hour so that the environmental illuminance becomes the control target illuminance in the next time zone. It is desirable to control the opening and closing of the electric brand 3 and the light output state of the lighting fixtures 1 and 2 so as to gradually decrease.

  The control logic shown in Table 1 is an example, and is not particularly limited. For example, the control target illuminance in the first time zone may be 750 lx or more, and the control in the second time zone. The target illuminance may be about 10 lx to 1000 lx. Furthermore, in the third time zone, it suffices to follow a general office lighting environment, but when the awakening effect is desired, the illuminance may be high as in the first time zone.

  Furthermore, in the example of the control logic of Table 1, the control target illuminance at the same time zone is uniform, but the control target illuminance may be varied within the above-described range. The first time zone is 4 hours in the above example, but it may be about 0.5 to 4 hours, and is not limited to the above example. Further, when the wing plate 3a of the electric blind 3 is opened downward, a direct illumination effect can be obtained. It may be possible for the user to select whether to open it.

It is a system configuration figure of one embodiment. It is a block diagram of the controller of one Embodiment. It is a flowchart for operation | movement description of one Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 2 Lighting fixture 3 Electric blind 3a Wing board part 4 Illuminance meter 5 Controller H Room D Desk W Window part

Claims (3)

A blind provided in a window portion of a room to be installed, a lighting fixture provided in the room to be installed, a control means for controlling opening and closing of the blind, and an illuminance measuring means for measuring the ambient illuminance of the room The control means sets a control target illuminance so that the ambient illuminance of the room becomes high illuminance in a first time zone from a predetermined time in the morning to a time in the vicinity of noon along the biological rhythm, The control target illuminance is set so that the ambient illuminance of the room becomes low illuminance in the second time zone from the predetermined time before and after the predetermined time at night, and the environmental illuminance measured by the illuminance measuring means is the control target illuminance. The lighting system is characterized in that the amount of external light taken into the room is adjusted by controlling the opening and closing of the blind. The lighting fixture is a dimmable lighting fixture, and the control means is configured such that when the environmental illuminance does not become a control target illuminance by controlling an opening / closing angle of the blind slats, the environmental illuminance becomes the control target illuminance. The lighting system according to claim 1, wherein the light output of the luminaire is controlled to be as follows. The luminaire is a luminaire that can control the color temperature of the output light, and the control means sets the color temperature of the output light of the luminaire to a high color temperature in the first time zone, and The lighting system according to claim 1, wherein the lighting apparatus is controlled so as to have a low color temperature in a time zone.

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