JP2008204849A - Automatic dimming lighting system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an automatic dimming LIGHTING SYSTEM capable of roughly uniformly controlling light associating each illumination equipment plurally installed with a target illuminance in accordance with the surrounding luminosity. <P>SOLUTION: An illuminance control apparatus 6 determines whether another luminaire 2 is present near the luminaire 2 to be a detection source from detection by an illumination sensor 4. If the other luminaire 2 is present near it, the adjacent luminaires 2 are associated each other, roughly uniformly changed in illuminance, and subjected to light control to the target illuminance according to the surrounding luminosity. Further, the illuminance control apparatus 6 determines whether the surrounding illuminance illuminated by the luminaire 2 is the target illuminance from detection by an illumination sensor 5. When it is different from the target illuminance, once the illuminance of the luminaire 2 is subjected to light control to the maximum watt of 100%, then gradually or stepwise decreased from the illuminance of 100%, and subjected to light control to the luminosity determined or recognized to be the target illuminance by the illuminance control apparatus 6. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention is an automatic adjustment used for dimming the illuminance of a lighting apparatus installed inside or outside a building such as a store (supermarket, convenience store, restaurant), office, conference hall, banquet hall, factory, etc. The present invention relates to a light illumination device.

Conventionally, as a device for dimming the illuminance of a lighting fixture as in the above example, for example, a plurality of lighting fixtures installed in multiple zones (window side zone, intermediate zone, wall side zone) inside the building are installed outside the building There is an illuminance control device of Patent Document 1 in which the control means controls the target illuminance for each zone based on the detection result of the outdoor illuminance sensor.
JP 2006-12679 A

  However, since the outside light collected from the window is irradiated in the vicinity of the window inside the building, even if the illuminance of the luminaire placed in the window side zone is low, the vicinity of the window is bright and the target illuminance is can get. On the other hand, it is difficult for outside light to reach near the wall on the opposite side of the window, so it is necessary to increase the illuminance of the lighting fixture placed in the wall-side zone to brighten the vicinity of the wall. Since the illuminance difference between the lighting fixtures arranged in the zone becomes large, if the lighting fixture arranged in the window side zone is dark, the life of the fluorescent lamp etc. will reach the lighting fixture, or a failure such as poor contact will occur in the lighting fixture. This gives rise to an image as it occurs, and for example, there is a problem that the willingness to purchase products sold in stores such as supermarkets and convenience stores is impaired.

  In view of the above problems, an object of the present invention is to provide an automatic dimming illumination device capable of dimming a plurality of installed lighting fixtures to a target illuminance according to the brightness of the vicinity.

  An automatic dimming illumination device according to a first aspect of the present invention is an automatic dimming illumination device that dimms a plurality of installed lighting fixtures to a target illuminance, and the lighting fixture is an illumination that is a detection source. Illumination detection means for detecting the presence of a luminaire installed near the luminaire around the luminaire, illuminance detection means for detecting illuminance in the vicinity illuminated by the luminaire as the detection source, and the illumination Based on detection by the detection means and the illuminance detection means, an illuminance control means for adjusting the illuminance of the luminaire as the detection source to the target illuminance according to the brightness in the vicinity illuminated by the luminaire It is characterized by.

  According to this invention, based on the illumination detection signal output from the illumination detection means, the illuminance control means determines whether another illumination fixture is present near the illumination fixture that is the detection source. If it is determined that another luminaire is present within a predetermined area of the luminaire that is the detection source, the luminaire that has been detected has the same function, and therefore recognizes that another luminaire is present nearby. Will do. In other words, based on the illuminance detection signal output from the illuminance detection means, the illuminants installed in a predetermined area of the luminaire as a detection source are changed in cooperation with each other, and the illuminance of each luminaire is substantially uniform. To dimm. In addition, when it determines with another lighting fixture not existing in the predetermined area | region of the lighting fixture which is a detection source, each illumination fixture is changed in illumination intensity independently, and light control is carried out to target illumination intensity.

  Further, based on the illuminance detection signal output from the illuminance detection means, the illuminance control means determines whether or not the illuminance in the vicinity illuminated by the luminaire is the target illuminance. That is, the external light irradiated in the vicinity illuminated by the luminaire decreases, and when it is determined by the illuminance control means to be darker than the target illuminance, or the external light is emitted in the vicinity illuminated by the luminaire. If the illuminance control means determines that the illuminance is brighter than the target illuminance, the illuminance of the luminaire that is the detection source is gradually changed according to the brightness in the vicinity illuminated by the luminaire, and the illuminance control means The brightness is adjusted to the brightness that is determined or recognized to be the illuminance of.

  The lighting fixture can be constituted by a lighting fixture including a light source such as a photoelectric tube (including a fluorescent lamp), a light bulb, a lamp, and an LED. Moreover, the illumination detection means can be comprised by illumination detection sensors, such as an ultrasonic sensor and a photoelectric sensor, for example. The illuminance detection means can be constituted by an illuminance detection sensor such as a sensor having a structure in which cadmium sulfide is arranged on a substrate, or a sensor not including a specific substance (cadmium). The illuminance control means can be constituted by an illuminance control device such as a control circuit including a PIC (Peripheral Interface Controller = peripheral device connection control IC), CPU, ROM, and RAM. The target illuminance is, for example, illuminance suitable for purposes such as reading and writing of characters, confirmation of passages and entrances, sales promotion, safety confirmation, and various operations. In addition, as an installation place of a lighting fixture, it can comprise inside or outside buildings, such as a store (supermarket, convenience store, restaurant), an office, a conference hall, a banquet hall, a factory, etc., for example.

  According to a second aspect of the present invention, there is provided an automatic dimming / illuminating device that uses the dimming pattern of the luminaire stored in the illuminance control means together with the configuration of the first aspect as the detection source. When it is determined that another luminaire is present near the light source, the illuminance of the luminaire that is the detection source is adjusted to 100%, and then the illuminance of the luminaire is gradually decreased to adjust to the target illuminance. It is set so that it may shine.

  According to the present invention, when it is determined that another lighting fixture is present near the lighting fixture that is the detection source, the illuminance control means adjusts the illuminance of the lighting fixture that is the detection source to 100%, and then the lighting fixture. The light intensity is gradually decreased to adjust the target light intensity. In addition, when it is determined that there is no other lighting fixture in the vicinity of the lighting fixture that is the detection source, the illuminance of the lighting fixture that is the detection source is changed to adjust the illuminance to the target illuminance.

  According to a third aspect of the present invention, there is provided an automatic dimming illumination device according to the first or second aspect of the present invention, wherein the illumination detection means is arranged around the illumination fixture as the detection source. It is characterized by comprising an illumination detection sensor for transmitting a detection wave toward a predetermined area and receiving a detection wave reflected by a lighting fixture installed in the predetermined area.

  According to this invention, an illumination detection sensor transmits a detection wave (for example, an ultrasonic wave) toward a predetermined area of the illumination fixture with the illumination fixture as a detection source as a center. For example, when another lighting fixture exists in a predetermined area such as 3 m, a detection wave transmitted from the lighting detection sensor is reflected by a lighting fixture present nearby. A detection wave reflected by the luminaire is received by the illumination detection sensor, and the received illumination detection signal is output to the illuminance control means. When there is no other lighting fixture in the predetermined area, the detection wave is not reflected and received, and the illumination detection signal is not output to the illuminance control means.

  An automatic dimming illumination device according to a fourth aspect of the invention is combined with the configuration according to any one of the first, second, and third aspects, and the illuminance detection means is a lighting fixture that is the detection source. The illuminance detection sensor detects the illuminance in the vicinity illuminated by the luminaire installed near the luminaire.

  According to this invention, the illuminance detection sensor detects the illuminance in the vicinity illuminated by the luminaire that is the detection source and the luminaire installed near the luminaire, and the detected illuminance detection signal is used as the illuminance control means. Output to.

  According to the present invention, each of the plurality of installed luminaires is dimmed substantially uniformly in cooperation with the target illuminance according to the brightness of the vicinity, so that the luminaire has reached the end of its life or has failed. Does not give a good image. In addition, after adjusting the illuminance of each luminaire to 100%, gradually or stepwise from the illuminance of 100%, the brightness is determined or recognized as the target illuminance by the illuminance control means. Dimming shortens the time required for dimming, allows quick dimming to the target illuminance according to the brightness in the vicinity, and consumes light during dimming rather than gradually increasing the illuminance of the luminaire It requires less power and is economical.

  The present invention has the purpose of dimming a plurality of installed lighting fixtures to a target illuminance in accordance with the brightness of the surroundings. Illumination detection means for detecting the presence of an appliance, illuminance detection means for detecting the illuminance in the vicinity illuminated by the illumination fixture that is the detection source, and the illuminance of the illumination fixture that is the detection source based on detection by each detection means Is achieved by providing illuminance control means for dimming the light to the target illuminance.

  An embodiment of the present invention will be described in detail with reference to the drawings.

  The drawings show an automatic dimming illumination device used when dimming a plurality of lighting fixtures installed on a ceiling inside a building to a target illuminance. In FIGS. 1 and 2, this automatic dimming illumination is shown. The apparatus 1 has a plurality of luminaires 2... Installed at predetermined intervals with respect to the ceiling Aa inside the building A, depending on the vicinity illuminated by the luminaires 2 or the brightness inside the building A. The light is adjusted to the target illuminance.

  Each of the lighting fixtures 2 is composed of an exposed type, an open type, and a sealed type lighting fixture 2 having one or a plurality of photoelectric tubes 3 (including fluorescent lamps) as an example of a light source. The illumination detection sensor 4 that detects whether another illumination fixture 2 exists near the illumination fixture 2, the illuminance detection sensor 5 that detects the illuminance in the vicinity illuminated by the illumination fixture 2, and the illumination detection sensor 4 Based on the detection by the illuminance detection sensor 5 and the illuminance control device 6 for dimming the lighting fixture 2 to the target illuminance, the control circuit 8 for controlling the voltage of the power supplied from the external power source 7, and the phototube 3 are instantaneously connected. A ballast 9 for generating a high voltage necessary for lighting the lamp 2 and a power switch 10 for lighting or extinguishing the lighting fixture 2 are provided.

  The illumination detection sensor 4 is composed of a sensor that transmits a detection wave, such as an ultrasonic sensor, and is connected to the input side of an illuminance control device 6 described later. The illumination detection sensor 4 transmits a detection wave (for example, an ultrasonic wave) toward a predetermined area of the illumination apparatus 2 around the illumination apparatus 2 as a detection source, and the illumination apparatus 2 installed in the predetermined area. Is received, and the received illumination detection signal is output to the illuminance control device 6. In the embodiment, the transmission direction of the detection wave is set in a substantially horizontal direction along the ceiling portion Aa inside the building A.

  The illuminance detection sensor 5 is composed of a sensor obtained by sintering cadmium sulfide on a substrate, and is connected to the input side of an illuminance control device 6 described later. The illuminance detection sensor 5 detects the illuminance in the vicinity illuminated by the luminaire 2 with the illuminator 2 as a detection source at the center, and outputs the detected illuminance detection signal to the illuminance control device 6. In the embodiment, the illuminance detected by the illuminance detection sensor 5 is determined by the illuminance illuminated by the luminaire 2 as a detection source and one or a plurality of luminaires 2 installed near the luminaire 2. It includes the illuminance illuminated and the illuminance illuminated by external light collected from a lighting unit such as a window or door. In addition, you may detect only the illumination of the lighting fixture 2 without including the illumination of external light.

  The illuminance control device 6 is composed of a peripheral device connection control IC such as a PIC, and is driven by power output from a rectifier circuit 14 to be described later, and controls driving of the entire device along a dimming pattern stored in advance. . Moreover, based on the illumination detection signal output from the illumination detection sensor 4, it is determined whether another illumination fixture 2 exists near the illumination fixture 2 which is a detection source. Further, based on the illuminance detection signal output from the illuminance detection sensor 5, it is determined whether or not the vicinity illuminated by the lighting fixture 2 and the inside of the building A have the target illuminance.

  That is, the time until the detection wave transmitted from the illumination detection sensor 4 of the illumination fixture 2 as a detection source is reflected by the nearby illumination fixture 2 and returned is measured. Since the distance that the detection wave travels per unit time is constant, if the return time of the detection wave is known, the distance from the luminaire 2 where the detection wave is transmitted to the luminaire 2 where the detection wave is reflected Can be calculated.

  Comparing the calculated comparison distance with a reference distance (for example, 3 m) stored in the storage unit, another illumination is provided in a predetermined area centered on the luminaire 2 that is a detection wave detection source. It is determined whether or not the instrument 2 exists. If the comparison distance is longer than the reference distance, it is determined that there is no other lighting fixture 2 near the lighting fixture 2 that is the detection source. If the comparison distance is shorter than the reference distance, it is determined that another lighting fixture 2 exists near the lighting fixture 2 that is the detection source. In addition, the reference distance memorize | stored in a memory | storage part can be changed into the desired distance of 3 m or less or 3 m or more, for example.

  When it is determined that another lighting fixture 2 exists near the detection source lighting fixture 2, the lighting fixture 2 that has been detected has the same function, and therefore another lighting fixture 2 exists in the vicinity. Will be recognized. As a result, based on the illuminance detection signal output from the illuminance detection sensor 5 described later, the adjacent lighting fixtures 2... Installed nearby are changed in illuminance in cooperation with each other. In addition, when it determines with another lighting fixture 2 not existing nearby, each illumination fixture 2 ... changes an illumination intensity independently.

  In the vicinity illuminated by the luminaire 2 and outside light radiated into the building A decreases, and it is determined that the illuminance is darker than the target illuminance, or in the vicinity illuminated by the luminaire 2 When it is determined that the illuminance in the vicinity illuminated by the luminaire 2 is brighter than the target illuminance, the illuminance dimming of the luminaire 2 is started according to the dimming pattern stored in the storage unit in advance.

  That is, as shown in FIG. 2, the illuminance of the luminaire 2 is once adjusted to the maximum wattage (40 W) of 100%, and then, for example, the maximum wattage of 100% (see FIG. 3) and 50% over time. In order of the intermediate watt (see FIG. 4) and the minimum watt of 20% (see FIG. 5), the dimming is gradually or stepwise from the dimmed state to the maximum watt of 100%. In addition, the illuminance detection sensor 5 detects the illuminance in the vicinity illuminated by the luminaire 2 and the inside of the building A, and based on the detection by the illuminance detection sensor 5, the vicinity illuminated by the luminaire 2 and the interior of the building A The illuminance is determined at any time by the illuminance control device 6, and the light is adjusted to the brightness that is determined or recognized as the target illuminance by the illuminance control device 6 within the illuminance range from 100% to 0%.

  The external power source 7 is composed of an AC type external power source wired to the building A, and is connected to a control circuit 8 and a ballast 9 described later. In the embodiment, when the 40 W phototube 3 is lit, the voltage included in the range of 100V to 200V or the power of one of the voltages is supplied to the control circuit 8 and the ballast 9 described later. Further, the voltage supplied from the external power source 7 may be transformed to a high voltage of 200 V or higher or a low voltage of 100 V or lower according to the wattage of the photoelectric tube 3. In place of the external power source, for example, a battery, a solar power generation device, or the like may be used as the power source. Further, the wattage of the phototube 3 is not limited to the wattage of the embodiment.

  The control circuit 8 includes a circuit including a control unit such as an IC (not shown), and is connected to the output side of the illuminance control device 6 described above. Based on a command signal output from the illuminance control device 6 to be described later, the voltage of the power supplied to the phototube 3 is increased or decreased, and the voltage is automatically set so that the illuminance corresponding to the determination result by the illuminance control device 6 is obtained. Control. For example, the voltage of power supplied from the external power supply 7 is boosted to increase the illuminance of the phototube 3. Further, the voltage of power supplied from the external power source 7 is stepped down to darken the illuminance of the phototube 3.

  The ballast 9 is composed of one ballast 9 selected from a glow start type, a rapid start type, an inverter type or the like according to the application, and is connected to the input side of the photoelectric tube 3 described above. When the power switch 10 to be described later is turned on, a high voltage necessary to instantly turn on one or more phototubes 3 is generated. Further, in order to stabilize the lighting state, the current flowing through the phototube 3 is controlled to an appropriate value, and an appropriate preheating voltage is supplied to the electrode of the phototube 3.

  The power switch 10 includes a manual switch 10 that is turned on or off, and is connected between the control circuit 8 and the ballast 9. When the ON operation is performed, a circuit between the control circuit 8 and the ballast 9 is connected, and power supply to the phototube 3 is allowed. When the operation is turned off, the circuit between the control circuit 8 and the ballast 9 is cut off, and the power supply to the phototube 3 is stopped. Instead of the manual power switch 10, for example, a wireless remote control switch using far infrared rays may be used.

  The rectifier circuit 14 is connected between the external power supply 7 and the illuminance control device 6, a transformer 15 for transforming high-voltage power supplied from the external power supply 7 to AC7V to AC12V, a bridge diode 16, and three terminals A regulator 17, capacitors 18, 19, 20, 21, 22, a rectifier diode 23, a resistor 24, and a green light emitting diode 25, and converts the power supplied from the external power supply 7 from AC to DC. The voltage is transformed to a voltage (0.5 V) suitable for driving the circuit and output to the illuminance control device 6.

  The illustrated embodiment is configured as described above, and a method of dimming the illuminance of the lighting fixture 2 by the automatic dimming illumination device 1 will be described below.

  First, as shown in FIG. 1, the power switch 10 is turned ON, and the lighting fixtures 2... Installed on the ceiling portion Aa inside the building A are turned on with power supplied from the external power source 7.

  At the time of lighting, a detection wave (for example, an ultrasonic wave) is transmitted toward a predetermined area of the lighting fixture 2 around the lighting fixture 2 as a detection source for each lighting fixture 2. When another luminaire 2 is present near the luminaire 2 that is the detection source, the detection wave reflected by the luminaire 2 is received by the illumination detection sensor 4 and output to the illuminance control device 6.

  Based on the illuminance detection signal output from the illuminance detection sensor 5, the illuminance control device 6 determines whether another luminaire 2 is present within a predetermined area of the luminaire 2 that is a detection source.

  When it is determined that another lighting fixture 2 exists near the detection source lighting fixture 2, the lighting fixture 2 that has been detected has the same function, and therefore another lighting fixture 2 exists in the vicinity. Will be recognized. That is, based on the illuminance detection signal output from the illuminance detection sensor 5 described later, the illumination fixture 2 that is a detection source and the illumination fixtures 2 installed nearby are changed in illuminance in cooperation with each other. The illuminance of the appliances 2 is adjusted approximately uniformly. In addition, when it determines with another lighting fixture 2 not existing near, each illumination fixture 2 ... is changed illumination intensity independently, and light control is carried out to target illumination intensity.

  At the time of illuminance dimming, the illuminance detection sensor calculates the illuminance in the vicinity illuminated by the luminaire 2 as the detection source and the luminaire 2 installed near the luminaire 2 with the luminaire 2 as the detection source at the center. 5 and output to the illuminance control device 6. Based on the illuminance detection signal output from the illuminance detection sensor 5, the illuminance control device 6 uses the illuminance control device 6 to determine whether the illuminance in the vicinity of the illumination fixture 2 and the interior of the building A is the target illuminance. judge.

  If the weather is good from early morning to evening, the outside light collected from the lighting unit such as windows and doors is irradiated in the vicinity illuminated by the luminaire 2, so even if the illuminance of the luminaire 2 is low, for example Target illuminance suitable for the purpose of reading and writing, confirmation of passages and entrances, sales promotion, safety confirmation, various work, etc. can be obtained. However, for example, in the evening, at night, rainy weather, cloudy weather, snowfall, etc., if the external light irradiated in the vicinity illuminated by the lighting fixture 2 decreases, the target illuminance cannot be obtained.

  Then, the vicinity illuminated by the luminaire 2 and the outside light radiated to the inside of the building A decrease, and it is determined that the illuminance is darker than the target illuminance, or the neighborhood illuminated by the luminaire 2 and the inside of the building A When the external light is irradiated and it is determined that the light intensity is higher than the target illuminance, the illuminance control device 6 starts illuminance dimming of the lighting fixture 2 along the dimming pattern stored in the storage unit in advance.

  That is, as shown in FIG. 2, after the illuminance of the luminaire 2 as a detection source and each luminaire 2 installed near the luminaire 2 is once dimmed to a maximum watt (40 W) of 100%. 3, gradually or stepwise from the state of illuminating the maximum wattage of 100% shown in FIG. 3 as time elapses, and each of the luminaire 2 that is a detection source and the luminaire 2 that is installed near the luminaire 2 The illuminance detection sensor 5 detects the illuminance in the vicinity illuminated by the lighting fixtures 2... And the illuminance inside the building A.

  In addition, based on the detection by the illuminance detection sensor 5, the illuminance control device 6 determines the illuminance in the vicinity illuminated by the lighting fixture 2 and inside the building A as needed, and within the illuminance range from 100% to 0%. Then, the light is adjusted to the brightness that is determined or recognized as the target illuminance by the illuminance control device 6. For example, as shown in FIG. 4, the illuminance of the luminaire 2 is dimmed to an intermediate watt of 50%, or as shown in FIG. 5, the illuminance of the luminaire 2 is dimmed to a minimum watt of 20%. The illuminance of the lighting fixture 2 may be dimmed to a watt of 20% or less.

  Further, when the vicinity of the light illuminated by the lighting fixture 2 and the inside of the building A are brightly illuminated by the incidence of external light and the target illumination intensity is obtained, the illumination by the lighting fixture 2 is unnecessary, so the illumination intensity of the lighting fixture 2 is reduced. Dimming to a brightness (or darkness) close to 0% or turning off.

  If there is no incident of outside light in the vicinity of the lighting fixture 2 or inside the building A at night or in the rainy weather, the illuminance of all the lighting fixtures 2... Is adjusted to the maximum wattage of 100% or 100%. If the light is adjusted to a near brightness, the target illuminance can be obtained.

  The illuminance control device 6 determines whether or not the target illuminance is based on detection by the illuminance detection sensor 5 every time a certain time elapses, and responds to the determination result. The illuminance control device 6 adjusts the illuminance of the lighting fixture 2 to the target illuminance.

  After the dimming is completed, the illumination time of the luminaire 2 is measured by a timer built in the illuminance control device 6, and the dimmed state is maintained until the preset illumination time elapses.

  When the preset illumination time has elapsed, the illuminance control device 6 adjusts the illuminance of the lighting fixture 2 to the target illuminance again based on detection by the illuminance detection sensor 5. At the same time, the light control by the automatic light control lighting device 1 is repeated at regular intervals, and the light is adjusted to the target illuminance according to the brightness illuminated by the lighting fixture 2 and the brightness inside the building A.

  Further, the illuminance in the vicinity illuminated by the luminaire 2 or the inside of the building A is continuously detected by the illuminance detection sensor 5, and based on the detection, the illuminance control device 6 changes the illuminance of the luminaire 2 to the target illuminance as needed. It may be dimmed.

  When the power switch 10 is turned on, the illuminance of the lighting fixture 2 may be adjusted to the target illuminance based on detection by the illumination detection sensor 4 and the illuminance detection sensor 5. In addition, at any time, the detection by the illumination detection sensor 4 and the illuminance detection sensor 5 is executed by turning on a manual switch (not shown), and based on the detection, the illuminance of the lighting fixture 2 is adjusted to the target illuminance. Also good.

  As described above, each of the plurality of installed lighting fixtures 2... Is adjusted in a substantially uniform manner in association with the target illuminance according to the brightness in the vicinity. I don't give the image that I did. Further, after the illuminance of each of the lighting fixtures 2 is once adjusted to 100%, the illuminance control device 6 determines or recognizes that the target illuminance is the target illuminance by gradually or gradually decreasing the illuminance from 100%. Since the light is adjusted to the brightness, the time required for the light adjustment is shortened, and the light can be quickly adjusted to the target illuminance according to the brightness in the vicinity. In addition, the power consumption at the time of dimming is less than that of gradually increasing the illuminance of the luminaire 2, which is economical.

In the correspondence between the configuration of the present invention and the above-described embodiment,
The illumination detection means of the present invention corresponds to the illumination detection sensor 4 of the embodiment,
Similarly,
The illuminance detection means corresponds to the illuminance detection sensor 5,
The illuminance control means corresponds to the illuminance control device 6,
The present invention is not limited to the configuration of the above-described embodiment, but can be applied based on the technical idea shown in the claims, and many embodiments can be obtained.

  For example, after the illuminance of the luminaire 2 is once adjusted to the minimum wattage close to 0%, the illuminance of the luminaire 2 is gradually increased so that the illuminance controller 6 determines or recognizes the target illuminance as the target illuminance. It may be dimmed.

  The automatic dimming illumination device of the present invention can be used for dimming the illuminance of a plurality of luminaires installed on structures such as walls, floors, outdoors, and sidewalks in addition to the building. .

The circuit diagram which shows the automatic light control lighting apparatus with which the lighting fixture was equipped. Explanatory drawing which shows the relationship between the illumination intensity of a lighting fixture, and time. Explanatory drawing which shows the example which dimmed the lighting fixture to the maximum watt of 100%. Explanatory drawing which shows the example which dimmed the lighting fixture to 50% of intermediate | middle watts. Explanatory drawing which shows the example which dimmed the lighting fixture to the minimum watt of 20%.

Explanation of symbols

DESCRIPTION OF SYMBOLS A ... Building Aa ... Ceiling part 1 ... Automatic light control lighting device 2 ... Lighting fixture 3 ... Photoelectric tube 4 ... Illumination detection sensor 5 ... Illuminance detection sensor 6 ... Illuminance control device 7 ... External power supply 8 ... Control circuit 9 ... Ballast 10 ... Power switch

Claims (4)

An automatic dimming lighting device for dimming a plurality of installed lighting fixtures to a target illuminance,
For each of the above lighting fixtures,
Illumination detection means for detecting the presence of a luminaire installed near the luminaire, with the luminaire being a detection source as the center,
Illuminance detection means for detecting the illuminance in the vicinity illuminated by the lighting fixture as the detection source,
Illumination control means for dimming the illuminance of the luminaire as the detection source to a target illuminance according to the brightness in the vicinity illuminated by the luminaire based on detection by the illumination detection means and the illuminance detection means Automatic dimming lighting device. When the dimming pattern of the luminaire stored in the illuminance control means is determined that another luminaire is present near the luminaire as the detection source, the illuminance of the luminaire as the detection source is set to 100. 2. The automatic light control lighting device according to claim 1, wherein after the light is adjusted to%, the illuminance of the lighting fixture is gradually decreased to adjust the light to the target illuminance. The lighting detection means transmits a detection wave toward a predetermined area of the lighting fixture with the lighting fixture as the detection source as a center, and receives a detection wave reflected by the lighting fixture installed in the predetermined area. The automatic dimming illumination device according to claim 1, wherein the automatic dimming illumination device is configured by an illumination detection sensor. The illuminance detection means is constituted by an illuminance detection sensor that detects illuminance in the vicinity illuminated by a luminaire that is the detection source and a luminaire installed near the luminaire. The automatic light control lighting apparatus as described in any one.

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