JPH08273839A - Lighting control system - Google Patents

Abstract

PURPOSE: To provide a lighting control system capable of keeping a room comfortable and realizing energy saving. CONSTITUTION: A luminaire for illuminance 1 for keeping the illuminance outside of a working area in a room, and a luminaire for brightness 17 having at least one luminescent part in which when the brightness of the luminescent part is indicated by L [unit: cd/m<2> ] and an apparent size of the luminescent part is indicated by solid angle ω [unit: steradian], the brightness L viewed from a certain constant distance is in a range of 3.3<=logL<=-0.3logω+2.63 are arranged. A lighting control system controls so that when people are in the range satisfying the above relation, the luminaire is lit, and when the luminaire becomes out of the visual range by more approaching, the luminaire is turned off.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention makes a room feel bright without giving glare.
The present invention relates to a control system for indoor lighting such as offices.

[0002]

2. Description of the Related Art In recent years, office equipment has become widespread in offices, and glare control type lighting fixtures are often attached to prevent reflection on a display. In this glare control type luminaire, the light distribution of the luminaire at a vertical angle of 60 degrees or more is strictly limited, and the brightness at a vertical angle of 60 to 85 degrees is 50 [cd / m.
² ] or less. In recent years, attempts have been made to realize energy saving by connecting these lighting fixtures with a network and turning off the lighting fixtures at unnecessary times.

Further, a task lighting device for ensuring sufficient illuminance in a limited work area, and an illuminance around the outside of the work area that is lower than that of the work area and has an appropriate illuminance that does not make the atmosphere in the room feel insidious. A task, ambient lighting scheme, with two types of lighting fixtures, ambient lighting fixtures for keeping, is being considered. This method is intended to realize energy saving by reducing the illuminance of unnecessary parts in the room. Furthermore, by connecting these lighting fixtures via a network, we have a human body sensor that determines whether or not there is a person near the work area, and we have built a lighting control system that performs control to turn off unnecessary lighting fixtures and realize energy savings. Attempts have also been made.

An example of the above-described lighting control system will be described below with reference to the drawings. FIG. 7 is a diagram of a conventional lighting control system and an office room. In FIG.
1 is a glare control type luminaire, 2 is a lighting control terminal device, 3 is a main operation device for controlling dimming of the luminaire, 4 is a timer, 5
Is a memory table storing the lighting control pattern for each time, 6 is a dimming degree calculating means for calculating the dimming degree of each lighting fixture from the timer and the memory table, and 7 is a dimming command of the lighting fixture through a network. Data sending means for sending to the lighting control terminal, 8 is a network cable, 9 is a dimming signal line for sending a dimming signal to each lighting fixture, 10
Is an office room, and 11 is a desk.

The operation of the lighting control system configured as described above will be described below.

First, the dimming degree calculating means 6 refers to the time information from the timer 4 and the control pattern from the memory table 5, and calculates an illumination control pattern according to the time. The calculated lighting control pattern is output from the data sending means 7 on the network, and the lighting control terminal device controls the dimming signal line 9
And dimming each lighting fixture according to the pattern. Energy saving can be realized by automatically turning off lights during lunch breaks.

FIG. 8 shows the configuration of a lighting control system adopting a conventional task and ambient system. In FIG. 8, 12 is a task lighting fixture, 13 is an ambient lighting fixture, 2 is a lighting control terminal, 14 is a human body sensor,
3 is a main operating device for controlling the dimming of the lighting equipment, 15 is a data collecting means for collecting the data of the human body sensor, 16
Is a memory table storing the coordinates of the luminaires, 6 is a dimming degree calculation means for calculating lighting and extinction of the respective luminaires, 7
Is a data sending means for sending a dimming command of the lighting equipment to the lighting control terminal through the network, 8 is a network cable, 9 is a dimming signal line for sending a dimming signal to each lighting equipment,
Reference numeral 10 is an office room, and 11 is a desk.

The operation of the lighting control system configured as described above will be described below.

First, the sensor information from the human body sensor 14 is taken into the main operating device 3 by the data collecting means 15,
With reference to the memory table 16 which stores the sensor data taken in by the dimming degree calculation means 6 and the absolute coordinates of the luminaire, for each of the task luminaires, if there is a person in the effective range, it lights up, and if there is no person, Calculate the dimming level of the task lighting fixture so that it is turned off. The calculated dimming degree is sent to the network cable 8 through the data sending means 7.
Upon receiving the command, the lighting control terminal 2 controls the dimming signal line 9 to control the dimming of the corresponding task lighting device 12.

[0010]

However, the above-mentioned FIG.
In the lighting system using the conventional glare control type lighting fixtures like this, since the light distribution of the glare control type lighting fixtures at a vertical angle of 60 degrees or more is strictly limited, the ceiling surface seen from the operator is dark and oppressed by dampness. There is a problem of giving a feeling and losing comfort. Further, when a lighting device other than the glare control type lighting device is used, the operator becomes uncomfortable due to direct glare, and the image is reflected on the display.

Further, in the task and ambient system as shown in FIG. 8, there is a problem that when the ambient lighting is set to be dark, the atmosphere in the room is dark and the comfort is lost, and conversely, when it is set to be bright, the energy saving effect is reduced. Had.

In view of the above problems, the present invention does not directly impart glare to office workers, does not make the ceiling surface dark, makes the entire room bright without obstructing the field of view, realizes energy saving and is comfortable. To provide a simple office lighting system.

[0013]

In order to solve the above-mentioned problems, the lighting control system of the present invention sets the brightness of the light emitting portion to L [unit: cd /
m ² ], the apparent size of the light emitting unit is defined by the solid angle ω [unit:
Sterradian], the luminance L of the light emitting portion viewed from within a certain distance is in the range of 3.3 ≦ log L ≦ −0.31log ω + 2.63. Lighting fixture and a human body sensor for detecting the position of a person in the room, and when a person enters within a certain range from the corresponding luminance lighting fixture, the luminance light emitting part of the luminance lighting fixture is turned on, and further the fixture. It is provided with a function of performing dimming control or turning off the light when a person comes directly below, and controlling light control for a plurality of people by giving priority to lighting.

[0014]

As described above, according to the present invention, the function of the light emitting portion for luminance causes the office worker to have a feeling of brightness and makes the room brighter without giving an unpleasant glare, thereby losing comfort. Energy saving can be realized without any problem.

[0015]

EXAMPLE It is empirically known that the higher the brightness of the light emitting portion of the lighting device, the larger the glare, and the lower the brightness, the less its presence. It is also empirically known that the glare increases as the apparent size of the light emitting part, which has a brightness several hundred times the brightness that the human eye adapts to, increases, and the glare appears when it decreases. Has been.

On the other hand, the present inventors created a lighting environment in which the apparent size and brightness of the light emitting part of the lighting fixture can be arbitrarily changed, and conducted psychological experiments. In the illuminance range of 500 to 1500 lx, there is a region that gives a sensation of brilliance between the apparent size and the brightness of the light emitting part of the lighting fixture, that is, FIG.
It became clear that there are areas as shown in. Equation (1) is an approximation of this region.

3.3 ≦ log L ≦ −0.31log ω + 2.63 (1) Further, the apparent size (solid angle ω) and brightness of the light emitting part of the lighting fixture are within the area of FIG. In a room illuminated by a lighting fixture, compared with a room illuminated by a conventional brightness control type lighting fixture, a psychological sense of brightness is 1.1 to 1.
It was revealed to be four times higher. Therefore, by installing the lighting fixture in the room such that the apparent size and brightness of the lighting fixture light emitting part as seen from the operator are within the area shown in FIG. 9, that is, the range represented by the formula (1), You can save energy without losing comfort.

The lighting control system of the first embodiment will be described below with reference to the drawings. FIG. 1 shows the configuration of a lighting control system in the first embodiment. Reference numeral 1 is a lighting fixture for maintaining the illuminance in the room, and 17 is a luminance for which the luminance L of the light emitting portion is one that can be seen within the range of 3.3 ≦ log L ≦ −0.31log ω + 2.63. Lighting equipment, 2 is a lighting control terminal, 3 is a main operating device for controlling the dimming of the lighting equipment, 14 is a human body sensor for detecting the position of a person, 15 is a data collecting means for collecting data of the human body sensor, Reference numeral 16 is a memory table storing the coordinates of the lighting equipment, 6 is a dimming degree calculating means for calculating lighting and extinction of each lighting equipment, and 7 is data transmission for sending a dimming command of the lighting equipment to a lighting control terminal device through a network. Means, 8 is a network cable, 9 is a dimming signal line for sending a dimming signal to each lighting fixture, 10 is an office room, and 11 is a desk.

FIG. 2 shows the configuration of a lighting control system according to the second embodiment of the present invention. In FIG.
12 is a task lighting fixture, 13 is an ambient lighting fixture,
Reference numeral 17 is a luminance lighting fixture, 2 is a lighting control terminal device, 14 is a human body sensor, 3 is a main operating device for performing dimming control of the lighting fixture,
Reference numeral 15 is a data collecting means for collecting the data of the human body sensor, 16 is a memory table storing the coordinates of the lighting equipment, 6 is a dimming degree calculating means for calculating turning on / off of each lighting equipment, and 7 is a lighting equipment Data transmission means for transmitting a dimming command to the lighting control terminal device through the network, 8 is a network cable, 9 is a dimming signal line for sending a dimming signal to each lighting fixture, 10 is an office room, and 11 is a desk.

FIG. 3 is a plan view illustrating a dimming area of the brightness luminaire. In FIG. 3, 17 is one brightness lighting fixture, 18 is a lighting area of the brightness lighting fixture, 19 is an outer boundary of the lighting area, and 20 is an inner boundary of the lighting area.

FIG. 4 shows a flow chart of the control when the brightness of the brightness luminaire is constant. Figure 5
FIG. 7 shows a flowchart of control when the brightness of the brightness luminaire is variable.

The lighting control system configured as described above will be described below with reference to FIGS. 1 and 2 and 3 and 4 and 5.
The operation will be described with reference to FIG.

The inside of the boundary 19 in FIG. 3 is a range in which when a person looks at the brightness luminaire 17, the light emitting portion of the brightness luminaire 17 can be seen in a range satisfying the expression (1). Further, the boundary 20 is a region in which a person further approaches the luminance lighting fixture 17 and the luminance lighting fixture 17 is out of the visual field. The brightness luminaire is lit when a person is in the lighting area 18.

FIG. 1 showing the configuration of the illumination system of this embodiment.
The operation of the lighting system will be described below. The main operating device 3 receives the sensor information from the human body sensor 14 by the data collecting means 15.
3 is referred to, the memory table 16 storing the sensor data and the absolute coordinates of the luminaire, which are taken in by the dimming degree calculating means 6, is referred to, and for each of the luminaires 17 for luminance, Lights up if there is more than one,
Luminance luminaire 17 for turning off or dimming if not present
Calculate the dimming degree of. The calculated dimming degree is sent to the network cable 8 through the data sending means 7. The lighting control terminal 2 that has received the command controls the dimming of the corresponding lighting fixture.

Further, in FIG. 2 as well, based on the information from the human body sensor 14, the brightness luminaire 17 is subjected to the dimming control similar to that described with reference to FIG. Further, in the case of FIG. 2, it goes without saying that the information from the human body sensor 14 can be used for dimming the task illumination as in the conventional example.

A control flow of the brightness luminaire will be described with reference to FIGS. 3 and 4. First, the human body sensor collects position information of all persons in the room. Next, for each of the lighting fixtures for brightness, the distance between the lighting fixture for brightness and a person is calculated, and if one person is in the lighting area 18 in FIG. , The result is sent to the lighting control terminal 2 through the network to dimming the corresponding lighting fixture. The above operation is performed for all the brightness lighting fixtures.

A control flow of the brightness lighting fixture when the brightness of the brightness lighting fixture 17 is variable will be described with reference to FIGS. 3 and 5. Similar to the flow of FIG. 4, the human body sensor collects the position information of the person. Next, the following processing is performed for each of the brightness lighting fixtures. First, the lighting area 18 in FIG.
If no one is inside, it goes out. When there is more than one person in the lighting area 18, when viewed from the farthest person in the lighting area 18 from the brightness lighting equipment, the brightness lighting equipment 17 is in a range that satisfies the expression (1) and the brightness of the brightness lighting equipment 17 is high. Is calculated, and the lighting fixture 17 for brightness is dimmed to this brightness. The above operation is performed for all the brightness lighting fixtures. That is, the closer the person is to the lighting fixture, the lower the brightness of the lighting fixture is controlled.

As described above, according to this embodiment, a luminance lighting fixture is newly provided in addition to the conventional lighting fixture, and the information obtained by the human body sensor determines that the luminance lighting fixture can be effectively viewed. By controlling to turn on the light when there is only one person and to turn off the light when there is no person, it is possible to maintain indoor comfort and save energy.

A third embodiment of the present invention will be described below with reference to the drawings. FIG. 6 shows the configuration of a lighting control system according to the third embodiment of the present invention. In FIG. 6, 21 is a blind, 22 is a brightness sensor that measures the brightness of the blind 21, and 23 is the flexibility of the human eye.
The brightness correspondence memory table storing the effective brightness level of the brightness lighting fixture corresponding to the brightness of the blind 21 is the same as FIG. 1 of the first embodiment.

The operation of the lighting system of the third embodiment having the above-mentioned structure will be described below. First, the brightness information from the brightness sensor 22 is taken into the main operating device 3 via the data collecting means 15, and the dimming degree calculating means 6 receives the data from the human body sensor 14 and the brightness sensor 22 taken from the data collecting means 15 and the blind. With reference to the memory table 23 that stores the effective luminance level of the luminance luminaire corresponding to the luminance of and the memory table 16 that stores the position of each luminaire, the luminance luminaire is turned on, turned off, and blinded. Calculate the brightness of the brightness luminaire proportional to the brightness of. The calculation result is sent from the data sending means 7 to the dimming terminal of the brightness luminaire, and the brightness luminaire is dimmed to an effective level. That is, when the brightness of the blind increases, the brightness of the brightness luminaire is controlled to increase in proportion to it.

As described above, the brightness sensor 22 for detecting the brightness of the blind and the memory table 23 storing the effective brightness level of the brightness luminaire corresponding to the brightness of the blind are provided, and if the brightness of the blind rises. By controlling the brightness of the lighting fixture for brightness to increase in proportion to the brightness of the blind so that it is effective for eyes that adapt to the bright brightness of the blind, brightness is increased even when natural light is strong and the brightness of the blind increases. The effective brightness of the lighting equipment is maintained and the comfort in the room is not impaired.

Although there is only one human body sensor in the first, second and third embodiments, it may be attached to each lighting fixture. Further, although the range of the brightness L of the brightness lighting fixture 17 is set to 3.3 ≦ log L ≦ −0.31log ω + 2.63, the range of the brightness is changed without being limited to this, and log L ≦ −0. .31log ω + 2.63 3.7 ≦ log L ≦ 3.8 (or 3.8 ≦ log L ≦ 3.
9 etc.) and the like. Further, when controlling a plurality of brightness luminaires 17, the range of the brightness degree may be changed for each brightness luminaire 17.

[0033]

As described above, according to the present invention, the luminance of the light emitting portion of the lighting apparatus is L [unit: cd / m ² ] and the apparent size of the light emitting portion is the solid angle ω [unit: steradian]. At this time, the brightness L seen from within a certain fixed distance can be seen to be in the range of 3.3 ≦ log L ≦ −0.31log ω + 2.63 The function of the light emitting unit for brightness has the effect of giving a sense of brightness and making a room feel bright without giving unpleasant glare to office workers.

Further, a human body sensor for detecting the position of a person in the room is provided, and when a person enters within a certain range from the corresponding brightness lighting device, the brightness light emitting portion of the brightness lighting device is turned on, and further immediately below the device. When there is a person in the room, control is performed so that the light is dimmed or extinguished, and for multiple people, it is possible to save energy without losing comfort in the room by providing a function to control dimming by giving priority to lighting. be able to.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a lighting control system according to a first embodiment of the present invention.

FIG. 2 is a configuration diagram of a lighting control system according to a second embodiment of the present invention.

FIG. 3 is a diagram showing a dimming area of the brightness lighting fixture in the embodiment.

FIG. 4 is a flowchart showing a control flow in the same embodiment.

FIG. 5 is a flowchart showing another control flow in the same embodiment.

FIG. 6 is a configuration diagram of a lighting control system according to a third embodiment of the present invention.

FIG. 7 is a schematic diagram of a conventional office lighting system.

FIG. 8 is a schematic diagram of a conventional task, ambient type office lighting system.

FIG. 9 is a diagram showing a range in which an effect of increasing a sense of brightness is obtained by shining.

[Explanation of symbols]

 1 Lighting Equipment for Illumination 2 Lighting Control Terminal 3 Main Operating Device 6 Dimming Calculator 7 Data Transmission Means 8 Network Cable 9 Dimming Signal Line of Lighting 10 Office Room 11 Desk 12 Task Lighting 13 Ambient Lighting 14 Human Body Sensor 15 Data collection means 16 Memory table 17 Luminance luminaire 21 Blind 22 Luminance sensor 23 Memory table

Claims (6)

[Claims] 1. A luminaire, a lighting control terminal to which the luminaire is connected, and a main operating device for transmitting lighting condition control data for a required lighting load to the lighting control terminal to perform lighting control. Is a lighting system connected via a transmission line, wherein the lighting equipment is a lighting equipment for indoor lighting for maintaining indoor illuminance, and a luminance of a light emitting unit is L [unit: cd / m ² ], When the apparent size of the light emitting unit is a solid angle ω [unit: steradian], the luminance L of the light emitting unit viewed from within a certain distance is 3.3 ≦ log L ≦ −0.31log ω + 2.63. And a brightness luminaire having one or more brightness light-emitting parts that can be seen within the above range. 2. A human body sensing means for detecting the position of a person, a data collecting means for collecting detection data of the human body sensing means, a memory table storing the position of the luminaire for brightness, and the data collecting means. And a dimming degree calculating means for calculating the distance between each luminaire for luminance and a person and the dimming degree of the luminaire for luminance with reference to the data collected from the memory table and the lighting load required for the lighting control terminal. 2. The lighting control system according to claim 1, further comprising a data transmission unit that transmits control data for performing the dimming control of the. 3. A control for turning on or off a brightness light emitting portion of a brightness lighting device when a person enters within a certain range from a corresponding brightness lighting device, and for dimming or extinguishing when a person comes directly under the device. 3. The lighting control system according to claim 2, wherein the lighting control is performed by giving priority to lighting for a plurality of persons. 4. The lighting control system according to claim 1, wherein when a person enters within a certain range from the corresponding brightness lighting device, the brightness light emitting portion of the brightness lighting device is turned on. 5. The lighting control system according to claim 1, wherein when a person comes directly under the corresponding brightness lighting fixture, the light is dimmed or turned off. 6. A blind connected to a window, a sensing means for detecting the brightness of the blind, a data collecting means for collecting data of the sensing means, and a brightness for when the human eye adapts to the brightness of the blind. It has a brightness-compatible memory table that stores the effective brightness level of the luminaire, and when the brightness of the blind increases due to natural light, the level of the brightness luminaire is increased based on the brightness-compatible memory table, and conversely the brightness of the blind. The lighting control system according to claim 1, wherein the lighting control system performs control to reduce a dimming level of the lighting fixture for brightness when the lighting level decreases.