JP2011070875A - Lighting system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting system with a viewing environment of a lighting area improved, and which is capable of obtaining energy-saving effects. <P>SOLUTION: A lighting state change-over switch 16 changes-over between a lighting mode where all the lighting fixtures 14 among a plurality of them with variable light distribution for illuminating a given lighting area are lit, and a partial lighting-off mode where some of the lighting fixtures are lit. A lighting control controller 11, when the partial lighting-off mode is selected with the lighting state change-over switch 16; lights preset lighting fixtures 14 out of the plurality of them, when an adjacent lighting area 15 is in a lighting mode; and controls the light distribution of the lighting fixtures 14 lit. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a lighting device having a plurality of lighting fixtures.

  For example, as a lighting device that illuminates a work place on each floor in a building, a plurality of lighting fixtures are arranged for each lighting area, and each lighting area is controlled to be turned on or off individually. Yes (see, for example, Patent Document 1). In this case, when the adjacent illumination area is turned off, there is no light from the luminaires in the adjacent illumination area, so the illuminated illumination area becomes dark. In particular, the difference between light and dark becomes large at night when the amount of external light is small, and the occupants who are present in the lighting area that is lit are likely to feel uncomfortable.

  In view of this, a human sensor that detects the presence or absence of a person is provided in association with each lighting area, and a lighting fixture that is arranged in the lighting area in correspondence with the human sensor according to the detection result of the human sensor. While controlling the light output, the control is performed so as to change the range of the illumination area associated with the human sensor (see, for example, Patent Document 2).

Japanese Patent Laid-Open No. 5-81572 JP 2009-123608 A

  However, in Patent Document 1, since the range of the adjacent illumination area is changed according to the change in the lighting condition of the light, the difference in brightness between the illuminated illumination areas can be reduced, but dimming control is performed on the adjacent illumination area. If so, the improvement in energy efficiency will be reduced.

  In general, the luminaire is most efficient in the case of all light, and has a characteristic that the efficiency decreases as the dimming depth increases. Therefore, in order to reduce the difference in brightness of the lighting area that is lit, the lighting area that is lit may often be lower than the illuminance of the lighting area that is lit, so dimming control is possible from the viewpoint of energy saving. Although desirable, the efficiency decreases when dimming control is performed.

  The objective of this invention is providing the illuminating device which can improve the visual environment of an illumination area, and the energy saving effect is acquired.

  A lighting device according to a first aspect of the present invention includes a plurality of lighting fixtures with variable light distribution that illuminate a predetermined lighting area; a lighting mode in which all the lighting fixtures among the plurality of lighting fixtures are turned on and a part of lighting A lighting state changeover switch for switching to a partially extinguished mode in which the fixture is lit; and when a partial extinguishing mode is selected with the lighting status changeover switch, when the adjacent lighting area is in the lighting mode, And a lighting control controller that controls a light distribution of the lit lighting fixture.

  In the present invention, terms and technical meanings are as follows unless otherwise specified. The predetermined lighting area refers to, for example, a unit lighting area obtained by dividing each floor area in a building by a lighting area, and in a normal state, lighting is performed by a lighting apparatus in which a plurality of lighting apparatuses are turned on and off collectively. An area. The lighting fixture with variable light distribution refers to a lighting fixture capable of changing the irradiation range of light from the light source of the lighting fixture.

  The lighting mode refers to a mode in which a plurality of lighting fixtures are turned on collectively in a normal state, and the partial turn-off mode is a predetermined lighting fixture among a plurality of lighting fixtures that perform lighting control in a batch. This is the mode to turn off.

  The lighting state switching means refers to means capable of collectively controlling a plurality of lighting fixtures such as a wall switch, a remote controller, and a sensor.

  According to the present invention, when a part of the plurality of lighting fixtures to be collectively controlled is turned off, the light distribution of the other lighting fixtures that are turned on is controlled. Therefore, the illuminance of the illumination area can be reduced without causing an energy saving effect while preventing a decrease in efficiency due to dimming control.

The block diagram of the illuminating device concerning embodiment of this invention. Explanatory drawing of an example of the illumination area in embodiment of this invention. Explanatory drawing of an example of the lighting state of a some lighting fixture in the illumination area of the partial light extinction mode in embodiment of this invention.

  Embodiments of the present invention will be described below. FIG. 1 is a configuration diagram of a lighting apparatus according to an embodiment of the present invention. A plurality of terminal controllers 13 are connected to the lighting controller 11 via a two-wire transmission signal line 12, and a plurality of lighting fixtures 14 are connected to each terminal controller 13. The terminal controller 13 is provided for each predetermined illumination area 15, and a plurality of lighting fixtures 14 in the same illumination area 15 are turned on and off collectively by a wall switch (not shown). Therefore, the illumination area 15 is an illumination area where a plurality of lighting fixtures are turned on and off collectively by a wall switch. In the embodiment of the present invention, in addition to the wall switch, a lighting state switch 16 as a lighting state switching unit is provided for each illumination area 15.

  This lighting state changeover switch 16 is a switch for switching to a lighting mode for turning on all lighting fixtures among a plurality of lighting fixtures 14 in the lighting area 15 and a partial extinguishing mode for turning off some lighting fixtures 14. For example, when a human sensor (not shown) detects the presence of a person in the illumination area 15, the lighting state changeover switch 16 selects the lighting mode, and the human sensor detects the presence of a person in the illumination area 15. If not detected, the partial extinguishing mode is selected.

  That is, when there is no person in the illumination area 15, it is only necessary to ensure a clear sky, so that the power consumption of the illumination area 15 can be reduced by reducing the illuminance.

  Further, instead of the human sensor, it may respond to a command of a lighting mode and a partial light-off mode by a remote controller. Furthermore, a wall switch for turning on / off a lighting fixture (not shown) is additionally provided with an operation button capable of selecting a partial light-off mode, and a part of the operation button in the partial light-off mode is selected by a person. You may make it select a light extinction mode. In this case, a normal lighting button is substituted for the lighting mode.

  When the partial lighting mode is selected by the lighting state changeover switch 16 of a certain lighting area 15, the lighting controller 11 turns off some of the lighting fixtures in the lighting area 15 and lights other lighting. Control to spread the light distribution of the instrument 14. For example, the two lighting fixtures in the lighting area 15a are turned off, and the light distribution of the remaining two lighting fixtures is controlled to be widened. At this time, the lighting fixture 14 in which the light distribution is controlled is preferably in the all-light lighting state.

  FIG. 2 is an explanatory diagram of a lighting area on a certain floor in the building. FIG. 2 shows a case where it is divided into six illumination areas 15a to 15f, and each of the illumination areas 15a to 15f is provided with four illumination fixtures. Here, as shown in FIG. 2, when the required illumination intensity of the illumination area 15a is secured with the four lighting fixtures 14, if the two lighting fixtures 14 are turned off, the light distribution of the other lighting fixtures 14 that are turned on is distributed. Even if the lighting of the target illumination area is secured by controlling, the area directly under the luminaire 14 that is turned off may be darker than the surroundings. For this reason, for example, workers in adjacent illumination areas 15b and 15c can easily feel a difference in brightness.

  Therefore, it is preferable that the lighting controller 11 selects the lighting fixture that controls the light distribution in the partial light-off mode and the lighting fixture that turns off the light by judging the surrounding situation.

  Hereinafter, a case where the lighting controller 11 determines the state of the surrounding lighting area and executes the partial lighting mode will be described.

  The lighting controller 11 determines whether or not the lighting area 15 adjacent to the lighting area 15 is in the lighting mode when the lighting area 15 is in the lighting mode. Only predetermined lighting fixtures among the fixtures are turned on, and the light distribution is controlled so that the light distribution of the lit lighting fixtures is expanded toward the illumination area 15 in the lighting mode.

  The light distribution control of the luminaire is, for example, configured such that the angle of the reflecting mirror of the luminaire is movable, and the light distribution is expanded toward the adjacent illumination area by changing the angle of the reflected light. Also, a liquid crystal film element is arranged in front of the light source, and the light distribution is broadened by adjusting the voltage applied to the liquid crystal film element, or the light distribution is widened by changing the positions of the exit lens and the light source. .

  FIG. 3 is an explanatory diagram of a lighting state of some of the lighting fixtures in the lighting area in the partially off mode.

  Now, when the illumination area 15b is in the partial extinction mode and the adjacent illumination areas 15a, 15c, and 15e are in the illumination mode, the illumination controller 11 is shown in FIG. Among the four lighting fixtures 14a to 14d, the two lighting fixtures 14a and 14d on the diagonal line are all lit to perform control in which the light distribution is widened. Thereby, the lighting fixture 14a mainly irradiates light to the adjacent illumination area 15a, and the lighting fixture 14d mainly irradiates light to the adjacent illumination areas 15c and 15e.

  In addition, when the illumination area 15b is in the partial extinction mode and only the adjacent illumination area 15c is in the illumination mode, the illumination controller 11 has four illumination areas 15b as shown in FIG. Among the lighting fixtures 14a to 14d, the two lighting fixtures 14b and 14d on the side of the adjacent lighting area 15c are all turned on to perform control to widen the light distribution. On the other hand, when only the adjacent illumination area 15a is in the lighting mode, the illumination controller 11, as shown in FIG. 3C, the adjacent illumination among the four luminaires 14 a to 14 d in the illumination area 15 b. The two lighting fixtures 14a and 14c on the area 15a side are all turned on to perform control with wide light distribution.

  In addition, when the illumination area 15b is in the partial extinction mode and only the adjacent illumination area 15e is in the illumination mode, the illumination controller 11 has four illumination areas 15b as shown in FIG. Among the lighting fixtures 14a to 14d, the two lighting fixtures 14c and 14d on the side of the adjacent lighting area 15e are all turned on to perform control to widen the light distribution.

  Similarly, when the illumination area 15e is in the partial extinction mode and only the adjacent illumination area 15b is in the illumination mode, the illumination controller 11 has four illumination areas 15e as shown in FIG. Of the two lighting fixtures 14a to 14d, the two lighting fixtures 14a and 14b on the side of the adjacent lighting area 15b are all lit to perform control to widen the light distribution.

  When the illumination area adjacent to the illumination area in the partial extinction mode becomes the partial extinction mode or the extinction mode, the illumination controller 11 sets the illumination area in the partial extinction mode as the extinction mode.

  As described above, according to the embodiment of the present invention, when a lighting area where no person exists and the lighting area adjacent to the lighting area is in the lighting mode, only a part of the lighting fixtures are turned on and light distribution is controlled. Since the partial light-off mode is set, the difference in brightness between adjacent illumination areas can be reduced. In addition, since some of the lighting fixtures that are lit are not dimming control but all-light lighting, an energy saving effect can be obtained while preventing a decrease in efficiency due to the dimming control.

DESCRIPTION OF SYMBOLS 11 ... Lighting control controller, 12 ... Transmission signal line, 13 ... Terminal controller, 14 ... Lighting fixture, 15 ... Lighting area, 16 ... Lighting state changeover switch

Claims (1)

A plurality of lighting fixtures that illuminate a predetermined lighting area and are controlled in a batch;
Lighting state switching means for switching to a lighting mode in which all the lighting fixtures among the plurality of lighting fixtures are turned on and a partial lighting off mode in which some lighting fixtures are turned off;
An illumination controller that controls light distribution of a lighting fixture that is in a lighting state when the partial lighting mode is selected by the lighting state switching unit;
An illumination device comprising:

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