JP6372701B2 - Lighting system - Google Patents

Description

  The present invention relates to an illumination system in which a feeling of brightness is secured by controlling a light emitting panel so that the luminance of a room in which the light emitting panel is installed is uniform.

  2. Description of the Related Art Conventionally, in a lighting device installed in a room into which external light such as an office building or a house is inserted, a device that adjusts the illuminance of the lighting device according to the amount of external light incident on the room has been proposed.

For example, Patent Document 1 (Japanese Patent Laid-Open No. 2013-127930) shows an illumination device that can adjust illuminance, an illuminance sensor that measures illuminance in an illumination area by the illumination device, and measured illuminance by the illuminance sensor. An illumination control system comprising: an illumination control device that sends a control signal for controlling the illumination intensity of the illumination device to the illumination device based on an illumination information signal, wherein the illumination sensor is connected to the illumination control device. An illuminance information transmission unit that transmits an illuminance information signal, and the illuminance information transmission unit periodically transmits the illuminance information signal at a predetermined time interval, and the change in the measured illuminance satisfies a predetermined condition Also discloses an illumination control system that transmits the illuminance information signal.
JP2013-127930A

  By the way, in recent years, an illumination system has been proposed in which a light emitting panel composed of a plurality of light sources is installed on almost the entire wall surface. There was a problem that the ceiling in the back of the room and the dark part of the wall were difficult to reach, and the comfort was reduced.

  This invention solves the said subject, The invention which concerns on Claim 1 is an illumination system which illuminates by controlling the said several light source of the luminescent panel which consists of several light sources, Comprising: The light emitting panel Is calculated by the storage unit that stores the relative luminance distribution in the room, the illuminance meter that measures the illuminance, the luminance calculation unit that calculates the luminance based on the illuminance measured by the illuminance meter, and the luminance calculation unit. A plurality of light sources so that the luminance is uniform with reference to the luminance distribution calculating unit that calculates the current luminance distribution from the luminance and the luminance relative distribution stored in the storage unit, and the luminance distribution calculating unit And a control unit for controlling.

  The invention according to claim 2 is the illumination system according to claim 1, wherein the relative luminance distribution is for daytime use.

  The invention according to claim 3 is the illumination system according to claim 1, wherein the relative luminance distribution is for night.

  Since the illumination system according to the present invention controls a plurality of light sources constituting the light-emitting panel so that the luminance is uniform based on the luminance relative distribution, according to the illumination system according to the present invention, By brightly illuminating the corners of the interior and in the daylight where the daylight is difficult to reach, including the ceiling behind the room and the dark part of the wall, a feeling of brightness is secured and the comfort of the entire room is improved.

It is a figure which shows the example of installation of the illumination system 100 which concerns on embodiment of this invention. It is the figure which looked at the back wall part 6 from the lighting wall part 5 side in the room 1 in which the illumination system 100 was installed. It is a block diagram of the illumination system 100 which concerns on embodiment of this invention. It is a figure which shows the structure at the time of acquiring the luminance relative distribution of the illumination system 100 which concerns on embodiment of this invention. It is a figure which shows the flowchart of a daytime brightness | luminance relative distribution acquisition process in the illumination system 100 which concerns on embodiment of this invention. It is a figure which shows the flowchart of the night luminance relative distribution acquisition process in the illumination system 100 which concerns on embodiment of this invention. It is a figure which shows the flowchart of the light emission panel lighting control process in the illumination system 100 which concerns on embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram illustrating an installation example of a lighting system 100 according to an embodiment of the present invention. Moreover, FIG. 2 is the figure which looked at the back wall part 6 from the lighting wall part 5 side in the room 1 in which the illumination system 100 was installed. That is, FIG. 2 is a view of the room 1 as viewed in the direction A of FIG. Thereby, the attachment position of the light emission panel 50 of the illumination system 100, the non-control object illumination 110, and the illuminance meter 70 can be grasped.

  Hereinafter, although the light emission panel 50 of the illumination system 100 according to the present invention will be described based on an example in which the light emission panel 50 is installed on the side wall portion 7 of the room 1, the light emission panel 50 of the illumination system 100 according to the present invention is limited to such an installation form. It is not done. For example, the light emitting panel 50 of the illumination system 100 according to the present invention can be installed not only on the side wall portion 7 but also on the ceiling portion 3 or the like.

  The room 1 has a floor portion 2 and a ceiling portion 3, a lighting wall portion 5 surrounding the space between the floor portion 2 and the ceiling portion 3, a back wall portion 6, and two opposing side wall portions 7. ing. The daylighting wall 5 is provided with a window (not shown), and it is assumed that outside light is incident during the daytime.

  Here, the reflectance of the side wall part 7 shall be (rho). The reflectance ρ of the side wall 7 is used when obtaining the luminance from the illuminance measured with the illuminometer. Details will be described later.

  The light emitting panel 50 of the lighting system 100 according to the present invention is attached to one of the side wall portions 7 of the room 1. In addition, a non-control target illumination 110 that is not controlled by the illumination system 100 is provided on the ceiling 3, and is configured to light up at night.

  A portion surrounded by a dotted line in FIG. 1 indicates an enlarged portion of the light emitting panel 50. As shown in the enlarged portion, the light emitting panel 50 has a configuration in which a plurality of light sources 51 are arranged in a matrix. As the light source 51, a light bulb, an LED, an organic EL light emitting element, or the like can be used.

FIG. 3 is a block diagram of the illumination system 100 according to the embodiment of the present invention. In FIG. 3, in FIG. 3, the control unit 30 includes a CPU (Central Processing Unit) and a ROM (Read Only Memory) that holds a program operating on the CPU.
y) and a general-purpose information processing mechanism including a RAM (Random Access Memory) that is a work area of the CPU. The control unit 30 cooperates and operates with each component connected to the illustrated control unit 30.

The control unit 30 as described above is configured to be able to control the light emission of each of the plurality of light sources 51 constituting the light emitting panel 50. The control unit 30 at least controls the amount of light when each light source 51 emits light. Furthermore, in addition to this, the control unit 30 may control the emission color when each light source 51 emits light. As described above, the control unit 30 controls the light sources 51, so that the light emitting panel 50 as a whole can perform illumination in various modes.

  In FIG. 3, a switch 40 is operated by a user to determine whether or not illumination is performed by the light emitting panel 50. The state of the switch 40 is detected by the control unit 30 and used for lighting control of the lighting system 100 according to the present invention.

  Further, the time measuring unit 60 is configured to generate time data and transmit the time data to the control unit 30. Based on the time data, the control unit 30 determines whether the current time is daytime or nighttime.

  The illuminance meter 70 is attached to one of the side wall portions 7, measures the illuminance at the position of the attached side wall portion 7, and transmits this measurement data to the control unit 30. Data measured by the illuminometer 70 is used for control of each light source 51 in the control unit 30.

  The storage unit 80 is configured to store a luminance relative distribution described later. As the storage unit 80, it is preferable to use a non-volatile unit that retains memory without supplying power. The storage unit 80 stores two luminance distributions, a daytime luminance relative distribution and a nighttime luminance relative distribution, and is referred to when the control unit 30 controls each light source 51.

  The luminance distribution acquisition unit 90 acquires the luminance distribution during the daytime and the luminance distribution at night in the room 1, and for example, a luminance camera or a digital camera can be used. The luminance distribution acquisition unit 90 is connected to the control unit 30 only when acquiring the luminance distribution. In FIG. 3, the luminance distribution acquisition unit 90 and the control unit 30 are connected by a dotted line. Shows this.

  In the lighting system 100 according to the present invention, after the daytime luminance distribution and the nighttime luminance distribution of the room 1 are acquired, data related to the luminance distribution is stored in the storage unit 80. Since the acquisition unit 90 only needs to be used for initial setting, the luminance distribution acquisition unit 90 is operated as described above. In addition, since the illumination system 100 according to the present invention can have such a configuration, it has an advantage that the system can be easily configured.

  Next, processing for acquiring a luminance relative distribution using the luminance distribution acquisition means 90 as described above will be described. This relative luminance distribution is data indicating the correspondence between the luminance distribution in the room 1 (in the side wall portion 7) and the illuminance measured by the illuminometer, and is profile data for the luminance distribution in the room 1 (in the side wall portion 7). is there. In the lighting system 100 according to the present invention, two types of luminance relative distributions for daytime and nighttime are prepared.

  FIG. 4 is a diagram illustrating a configuration when the luminance relative distribution of the illumination system 100 according to the embodiment of the present invention is acquired. As shown in FIG. 4, the luminance distribution acquisition means 90 such as a digital camera is set so as to measure the luminance distribution of the side wall portion 7 of the room 1 where the light emitting panel 50 is not provided. After being set in this way, the process of acquiring the daytime relative luminance distribution during the day and the nighttime relative luminance distribution is executed, and the process of storing the respective luminance relative distributions in the storage unit 80 is executed. To do.

First, the night luminance relative distribution acquisition process will be described. FIG. 5 is a flowchart of the daytime luminance relative distribution acquisition process in the lighting system 100 according to the embodiment of the present invention. Such a flowchart is executed by the control unit 30.

  In FIG. 5, when the daytime luminance relative distribution acquisition process is started in step S <b> 100, the luminance distribution of the side wall portion 7 is acquired by the luminance distribution acquisition means 90 in the next step S <b> 102.

  In the next step S103, a daytime luminance relative distribution when the luminance at the installation position of the illuminometer 70 is set to 1 is calculated. The daytime luminance relative distribution is data indicating a relative value of luminance at other positions of the side wall portion 7 when the luminance at the installation position of the illuminometer 70 is 1.

  In step S104, the daytime luminance relative distribution is stored in the storage unit 80. In step S105, the daytime luminance relative distribution acquisition process is terminated.

  Next, the night luminance relative distribution acquisition process will be described. FIG. 6 is a diagram showing a flowchart of nighttime luminance relative distribution acquisition processing in the illumination system 100 according to the embodiment of the present invention. Such a flowchart is executed by the control unit 30.

  In FIG. 6, when the night luminance relative distribution acquisition process is started in step S200, in step S201, the non-controllable illumination 110 is turned on at night to prepare for acquiring the luminance distribution at night.

  In the next step S203, the luminance distribution acquisition means 90 acquires the luminance distribution of the side wall portion 7.

  In the next step S204, a nighttime luminance relative distribution is calculated when the luminance at the installation position of the illuminometer 70 is 1. The nighttime luminance relative distribution is data indicating a relative value of luminance at other positions of the side wall portion 7 when the luminance at the installation position of the illuminometer 70 is 1.

  In step S205, the nighttime luminance relative distribution is stored in the storage unit 80. In step S206, the nighttime luminance relative distribution acquisition process is terminated.

  Next, the lighting control process of the light emitting panel 50 of the lighting system 100 according to the present invention after each luminance relative distribution is stored in the storage unit 80 as described above will be described. FIG. 7 is a view showing a flowchart of the light emission panel lighting control process in the illumination system 100 according to the embodiment of the present invention. Such a flowchart is executed by the control unit 30. Further, when the processing according to this flowchart is executed, the luminance distribution acquisition unit 90 is separated from the control unit 30.

  In FIG. 7, when the lighting control process of the light emitting panel 50 is started in step S300, the process proceeds to step S301, where it is determined whether or not the switch 40 is on. If the determination in step S301 is NO, the process returns to step S301 and loops. If the determination in step S301 is YES, the process proceeds to step S302.

  In step S302, time data is acquired from the time measuring unit 60. In step S303, it is determined based on the time data whether the present time is daytime. If the determination in step S303 is YES, the process proceeds to step S304, and the daytime luminance relative distribution is acquired from the storage unit 80. If the determination in step S303 is NO, the process proceeds to step S305, and the nighttime luminance relative distribution is acquired from the storage unit 80. Get the distribution.

  In step S306, the measurement data of the illuminance E (lx) is acquired from the illuminometer 70.

In step S307, the luminance L (cd / m ² ) is calculated from L = (ρE) / π from the illuminance E (lx) and the reflectance ρ of the wall surface of the side wall 7.
Calculated by

In step S308, the current luminance distribution on the side wall 7 is calculated based on the obtained luminance L and the luminance relative distribution.
(Current luminance distribution) = (Luminance L) × (Daytime or nighttime relative luminance distribution)
Can be obtained.

  In step S309, based on the above (current luminance distribution), the light emission of each light source 51 of the light emitting panel 50 is controlled so that the wall surface of the side wall portion 7 has a uniform luminance. In this control, for the light source 51 corresponding to the position where the luminance is insufficient in the (current luminance distribution), control is performed to increase the amount of emitted light, and control is performed so that the entire wall surface has uniform luminance. The target luminance is the maximum luminance in the luminance distribution.

  In step S310, it is determined whether or not the switch 40 is turned off. If this determination is NO, the process returns to step S301.

  On the other hand, if determination of step S310 becomes YES, it will progress to step S311 and will complete | finish the lighting control process of the light emission panel 50. FIG.

  As described above, the illumination system 100 according to the present invention controls the plurality of light sources 51 included in the light-emitting panel 50 so that the luminance is uniform based on the relative luminance distribution. Therefore, the illumination system according to the present invention. According to No.100, bright lighting is ensured by brightly illuminating the corners of the walls and ceilings and the ceilings in the back of the room where daylight is difficult to reach, and the dark parts of the walls. improves.

DESCRIPTION OF SYMBOLS 1 ... Room 2 ... Floor part 3 ... Ceiling part 5 ... Daylighting wall part 6 ... Back wall part 7 ... Side wall part 30 ... Control part 40 ... Switch 50- ..Light-emitting panel 51... Light source 60..

Claims (3)

An illumination system that performs illumination by controlling the plurality of light sources of a light-emitting panel composed of a plurality of light sources,
A storage unit for storing a relative luminance distribution in a room to which the light-emitting panel is attached;
An illuminometer that measures illuminance;
A luminance calculating unit for calculating luminance based on the illuminance measured by the illuminometer;
A luminance distribution calculation unit that calculates a current luminance distribution from the luminance calculated by the luminance calculation unit and the luminance relative distribution stored in the storage unit;
An illumination system comprising: a control unit that controls a plurality of light sources so that luminance is uniform with reference to the luminance distribution calculation unit. The lighting system according to claim 1, wherein the relative luminance distribution is for daytime use. The lighting system according to claim 1, wherein the relative luminance distribution is for nighttime use.

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