Lighting system

Abstract

This lighting system provides a simple way to create a lighting environment that feels natural and harmonious in a designated area by having multiple lighting fixtures operate in conjunction with detection signals from a motion sensor. [Solution] A lighting system comprising a first lighting fixture 100 having a motion sensor 120 and a first light source, a second lighting fixture having a second light source, and a sensor control power supply unit 200, wherein the first lighting fixture 100 generates a PWM dimming signal that causes the first light source 110 and the second light source to turn on or off in conjunction with each other in response to a detection signal from the motion sensor 120. The sensor control power supply unit 200 supplies power to the first lighting fixture 100 to turn on or off the first light source in response to the PWM dimming signal from the first lighting fixture 100, and also transmits the PWM dimming signal to the second lighting fixture, which then turns on or off the second light source in conjunction with the first light source in response to the transmitted PWM dimming signal.

Description

Technical Field

[0001] The present invention relates to a lighting system. For example, it relates to a lighting system in which a plurality of lighting fixtures operate in conjunction with each other to perform fade-in lighting or fade-out extinguishing according to a detection signal detected by a human presence sensor.

Background Art

[0002] Conventionally, a lighting system including a human presence sensor and a lighting fixture that lights up according to a detection signal of the human presence sensor has been known. In such a lighting system, when the human presence sensor detects the presence of a person, the lighting fixture automatically performs an "ON operation" to light up, and after a certain period of time, the lighting fixture automatically performs an "OFF operation" to turn off. It is installed in entrances, corridors, etc.

[0003] Further, as an invention related to a lighting fixture that performs lighting control using a detection signal of a human presence sensor, Patent Document 1 discloses a configuration of a lighting fixture that adjusts the light quantity of illumination light according to a detection signal of a human presence sensor.

[0004] The lighting fixture described in Patent Document 1 includes a box-shaped fixture body, a light source unit installed in the fixture body and emitting illumination light forward, and a control device that controls the light source unit according to the detection result of a human presence sensor. The control device is configured to control the light source unit so that the light quantity of the illumination light is smaller than a reference value when the human presence sensor does not detect the presence of a person, and the light quantity of the illumination light matches the reference value when the human presence sensor detects the presence of a person. That is, the lighting device described in Cited Document 1 switches the light quantity of the light source unit in two steps according to the detection result of the human presence sensor.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

[0006] By the way, in large areas where people pass through sporadically, completely turning off lighting fixtures at night poses a safety problem, while keeping the lighting fixtures on all the time is undesirable from an energy conservation standpoint. Furthermore, illuminating a wide area with sporadic pedestrian traffic requires multiple lighting fixtures. However, if each fixture is equipped with a motion sensor and controlled to turn on / off individually (or to switch the light intensity for each lighting device), the area will have an unnatural lighting environment, which can make passersby feel uncomfortable.

[0007] While developing a lighting system that can illuminate wide areas such as those described above without causing discomfort, the inventor conceived the idea that if multiple lighting fixtures were to work in conjunction with a motion sensor to detect a signal, fading in to a predetermined brightness level or fading out from an illuminated state, it would be possible to provide a lighting environment that ensures the safety of pedestrians and others without causing discomfort, while also achieving energy savings. However, currently, if multiple lighting devices are to synchronize and fade in or fade out in response to detection signals from motion sensors, it is necessary to introduce a lighting control system that controls the entire system; this cannot be achieved with a single configuration.

[0008] The present invention has been made in view of the above technical problems, and its purpose is to provide a lighting system that easily realizes a lighting environment that is less jarring to a predetermined area by having multiple general dimmable lighting fixtures operate in conjunction with each other in response to a detection signal detected by a motion sensor. [Means for solving the problem]

[0009] A first aspect of the present invention, made to solve the above problems, is a lighting system comprising a first lighting fixture having a motion sensor and a first light source, a second lighting fixture having a second light source, and a sensor control power supply unit electrically connected to the first lighting fixture and the second lighting fixture, wherein the motion sensor is driven by sensor power supplied from the sensor control power supply unit, detects the presence or absence of a person in a predetermined area, and outputs a detection signal indicating the detected content, the first lighting fixture acquires the detection signal output by the motion sensor, and generates a PWM dimming signal to fade in and turn on the first and second lighting fixtures in conjunction to a predetermined dimming level of brightness, or to fade out and turn off the first and second lighting fixtures that are lit at a predetermined brightness, corresponding to the content of the acquired detection signal, and the sensor control power supply unit In contrast, the sensor control power supply unit has a PWM signal generation unit that transmits the PWM dimming signal, and the sensor control power supply unit has a lighting device that receives the PWM dimming signal transmitted from the PWM signal generation unit and supplies lighting power to the first lighting fixture to fade in and turn on the first light source so that it becomes a predetermined dimming level in brightness according to the received PWM dimming signal, or to fade out and turn off the first light source that is lit at a predetermined brightness, and transmits the received PWM dimming signal to the second lighting fixture, and the second lighting fixture, upon receiving the PWM dimming signal transmitted from the sensor control power supply unit, fades in and turns on the second light source in conjunction with the first light source so that it becomes a predetermined dimming level in brightness, or fades out and turns off the second light source that is lit at a predetermined brightness in conjunction with the first light source.

[0010] A first aspect of the present invention provides a lighting system in which, with the above configuration, multiple lighting fixtures (first lighting fixture, second lighting fixture) work in conjunction with a detection signal detected by a motion sensor to fade in and fade out to achieve a predetermined brightness level. Therefore, for example, if the lighting system of the first aspect of the present invention is installed in an area where people pass through sporadically, a lighting environment that does not feel unnatural to the area is provided. Furthermore, in the first aspect of the present invention, a PWM dimming signal, which is common in lighting control, is used to synchronize the fading-in illumination and fading-out dimming of multiple lighting fixtures (first lighting fixture, second lighting fixture). In other words, according to the first aspect of the present invention, multiple general dimmable lighting fixtures can operate in a synchronized manner.

[0011] Furthermore, it is desirable that the second lighting fixtures be provided in multiple quantities, and that each of them has a PWM dimming power supply unit that receives a PWM dimming signal transmitted from the PWM signal generation unit of the sensor control power supply unit and supplies lighting power corresponding to the content of the received PWM dimming signal to the second light source.

[0012] Furthermore, a second aspect of the present invention is a lighting system comprising a dedicated sensor device having a motion sensor, a plurality of lighting fixtures, and a sensor control power supply unit electrically connected to each of the dedicated sensor device and the plurality of lighting fixtures, wherein the lighting fixtures have a light source, the motion sensor is driven by sensor power supplied from the sensor control power supply unit, detects the presence or absence of a person in a predetermined area and outputs a detection signal indicating the detected content, the dedicated sensor device acquires the detection signal output by the motion sensor and, in accordance with the content of the acquired detection signal, the plurality of lighting fixtures work together to fade in or light up to a predetermined brightness level. The system has a PWM signal generation unit that generates a PWM dimming signal to cause multiple lighting fixtures that are lit at a predetermined brightness to fade out in conjunction and to transmit the PWM dimming signal to the sensor control power supply unit, and when the sensor control power supply unit receives the PWM dimming signal transmitted from the PWM signal generation unit, it transmits the received PWM signal to the multiple lighting fixtures, and when the multiple lighting fixtures receive the PWM dimming signal transmitted from the sensor control power supply unit, they synchronize to fade in the lighting of the light source to a predetermined dimming level or fade out the light source that is lit at a predetermined brightness.

[0013] In the second embodiment of the present invention, as in the first embodiment described above, a lighting system is provided in which multiple lighting fixtures work in conjunction with a detection signal detected by a motion sensor to fade in and fade out to achieve a predetermined brightness level. Therefore, for example, if the lighting system of the second embodiment of the present invention is installed in an area where people pass through sporadically, a lighting environment that does not feel unnatural to the area is provided. [Effects of the Invention]

[0014] According to the present invention, it is possible to provide a lighting system that can simply realize a lighting environment with less sense of discomfort for a predetermined area by causing a plurality of general dimming type lighting fixtures to operate in联动 according to a detection signal detected by a human presence sensor.

Brief Description of Drawings

[0015] [Figure 1] It is a schematic diagram for explaining the configuration of the lighting system according to the first embodiment of the present invention. [Figure 2] It is a schematic diagram for explaining the configuration of the lighting fixture with a sensor constituting the lighting system according to the first embodiment of the present invention, (a) is a schematic diagram showing the side surface of the lighting fixture with a sensor, and (b) is a schematic diagram showing the bottom surface of the lighting fixture with a sensor. [Figure 3] It is a functional block diagram of the lighting system according to the first embodiment of the present invention. [Figure 4] It is a schematic diagram showing the appearance of the sensor control power supply unit constituting the lighting system according to the first embodiment of the present invention, (a) is a schematic diagram showing the plane of the sensor control power supply unit, and (b) is a schematic diagram showing the side surface of the sensor control power supply unit. [Figure 5] It is a schematic diagram for explaining the configuration of the lighting system according to the second embodiment of the present invention. [Figure 6] It is a schematic diagram for explaining the configuration of the dedicated sensor device constituting the lighting system according to the second embodiment of the present invention, (a) is a schematic diagram showing the side surface of the dedicated sensor device, and (b) is a schematic diagram showing the bottom surface of the dedicated sensor device. [Figure 7] It is a functional block diagram of the lighting system according to the second embodiment of the present invention.

Modes for Carrying Out the Invention

[0016] 《Lighting System of the First Embodiment》 Hereinafter, the lighting system according to the first embodiment of the present invention will be described based on the drawings.

[0017] First, the overall configuration of the lighting system according to the first embodiment will be described while referring to FIG. 1.

[0018] Here, FIG. 1 is a schematic diagram for explaining the configuration of the lighting system according to the first embodiment.

[0019] As shown in the figure, the lighting system according to the first embodiment includes a sensor-equipped lighting fixture (first lighting fixture) 100 equipped with a human presence sensor 120, a plurality of general lighting fixtures (second lighting fixtures (lighting fixtures 310, 320, 330, 340)), and a sensor control power supply unit 200. The sensor control power supply unit 200 is electrically connected to the sensor-equipped lighting fixture 100 and is also electrically connected to each of the plurality of general lighting fixtures. The sensor-equipped lighting fixture 100 and the general lighting fixtures (lighting fixtures 310, 320, 330, 340) are installed in an area of about 10m × 10m, for example.

[0020] The sensor-equipped lighting fixture 100 is a downlight including an LED lighting unit (hereinafter simply referred to as "lighting unit") 110 having a light source (first light source (LED module 112)), a human presence sensor 120, and a PWM signal generation unit 130, and is installed, for example, at the eaves or the like. The lighting unit 110 receives the supply of LED lighting power (lighting power) from the sensor control power supply unit 200, and fades in and lights the light source so as to have a dimming level of brightness corresponding to the supplied LED lighting power, or fades out and turns off the lit light source at a predetermined brightness. The human presence sensor 120 is driven by the sensor power supplied from the sensor control power supply unit 200, detects the presence or absence of a person in a predetermined area, and outputs a detection signal (detection information) indicating the detected content.

[0021] The PWM signal generation unit 130 adjusts the detection information output by the motion sensor 120, generates a PWM dimming signal corresponding to the detection information, and transmits the PWM dimming signal to the sensor control power supply unit 200 and other general lighting fixtures (lighting fixtures 310, 320, 330, and 340). Specifically, the PWM signal generation unit 130 acquires (receives) the detection signal (detection information) output by the motion sensor 120, generates a PWM dimming signal corresponding to the acquired detection signal, and transmits the PWM dimming signal to the sensor control power supply unit 200. As will be explained below, the sensor control power supply unit 200 has the function of relaying and transmitting the received PWM dimming signal to general lighting fixtures (lighting fixtures 310, 320, 330, and 340).

[0022] The sensor control power supply unit 200 supplies power to the human presence sensor 120 and the PWM signal generation unit 130. Furthermore, the sensor-controlled power supply unit 200 transmits the LED lighting power (lighting power) corresponding to the PWM dimming signal received from the sensor-equipped lighting fixture 100 to the LED lighting unit 110 of the sensor-equipped lighting fixture 100. Furthermore, the sensor control power supply unit 200 transmits (transfers) the received PWM dimming signal to the general lighting fixtures (lighting fixtures 310, 320, 330, and 340). In other words, the sensor control power supply unit 200 relays the PWM dimming signal transmitted by the PWM signal generation unit 130 and transmits the received PWM dimming signal to the general lighting fixtures (lighting fixtures 310, 320, 330, and 340). This PWM dimming signal includes fade signals (feed-in turn-on signal, fade-out turn-off signal) and dimming signals.

[0023] The general lighting fixtures (lighting fixture 310, lighting fixture 320, lighting fixture 330, and lighting fixture 340) are all LED lighting fixtures equipped with a light source (second light source (LED module)), and are controlled by a PWM dimming signal transmitted from the PWM signal generation unit 130, so that the light source turns on and off in conjunction with the sensor-equipped lighting fixture 100.

[0024] Specifically, the general lighting fixtures (lighting fixtures 310, 320, 330, and 340) receive a PWM dimming signal transmitted from the PWM signal generation unit 130 via the sensor power supply unit 200. In accordance with the content of the received PWM dimming signal, they work in conjunction with the sensor-equipped lighting fixture 100 to fade in the light source to achieve the same dimming level as the sensor-equipped lighting fixture 100, or fade out the light source that is lit at a predetermined brightness.

[0025] PWM dimming control is the most common and widespread method of lighting control and can be linked with various lighting fixtures. In the example shown in Figure 1, lighting fixture 310 is a pendant-type base lighting fixture, lighting fixture 320 is a linear-type base lighting fixture, lighting fixture 330 is a spotlight, and lighting fixture 340 is a square-type base lighting fixture, but it is not limited to this. The general lighting fixtures (lighting fixtures 310, 320, 330, and 340) can be any type of lighting fixture, as long as they are capable of turning the light source on and off in conjunction with the sensor-equipped lighting fixture 100. Furthermore, in the illustrated example, the number of general lighting fixtures that are linked to the sensor-equipped lighting fixture 100 is "4," but the number of general lighting fixtures will be designed as appropriate.

[0026] 《Sensor-equipped lighting fixture 100》 Next, the configuration of the sensor-equipped lighting fixture 100 of the lighting system of the first embodiment will be described with reference to Figures 2 and 3. Here, Figure 2 is a schematic diagram illustrating the configuration of a sensor-equipped lighting fixture that constitutes the lighting system of the first embodiment. Figure 3 is a functional block diagram of the lighting system of the first embodiment of the present invention.

[0027] As described above, the sensor-equipped lighting fixture 100 is a downlight that includes a lighting unit 110, a motion sensor 120, and a PWM signal generation unit 130. As shown in Figure 2, the above-described lighting unit 110 includes a heat sink 111, an LED module 112 which is a light source, and a roughly bowl-shaped reflector 114. The LED module 112 is attached to one end (lower end) of the heat sink 111. In the figure, reference numeral 113 indicates a trim, and reference numeral 115 indicates a mounting spring.

[0028] The LED module 112 receives LED lighting power from the sensor control power supply unit 200, and in accordance with the LED lighting power, it fades in to light up to a brightness level corresponding to the supplied LED lighting power, or fades out to turn off from a state where it is lit at a predetermined brightness level.

[0029] Furthermore, the motion sensor 120 is installed on the lower end side of the lighting unit 110 and radially outward from the reflector 114, and is an infrared sensor that detects the presence or absence of people in the area below the sensor-equipped lighting fixture 100. When the motion sensor 120 detects the presence of a person in the area below the sensor-equipped lighting fixture 100, it transmits a detection signal (sensor ON signal) to the PWM signal generation unit 130 indicating that a person is present (see Figure 3). On the other hand, if the motion sensor 120 does not detect the presence of a person in the area below the sensor-equipped lighting fixture 100, it sends a detection signal (sensor OFF signal) to the PWM signal generation unit 130 indicating that there is no person (see Figure 3).

[0030] In the first embodiment, the human presence sensor 120 uses an infrared sensor that detects infrared radiation emitted from the human body, but it is not limited to this. The motion sensor 120 may also be composed of sensors other than infrared sensors (ultrasonic sensors, microwave sensors, dual sensors (sensors that combine infrared sensors and microwave sensors)).

[0031] The PWM signal generation unit 130 is made up of a specially designed circuit board and is installed, for example, above the motion sensor 120 in the sensor-equipped lighting fixture 100, and operates with a certain amount of power supplied from the sensor control power supply unit 200. The PWM signal generation unit 130 then acquires the detection signal output by the motion sensor 120 and generates a PWM dimming signal corresponding to the content of the acquired detection signal to operate the "lighting unit 110 of the sensor-equipped lighting fixture 100" and the "general lighting fixtures 310, 320, 330, 340" in conjunction. Furthermore, the PWM signal generation unit 130 transmits the generated PWM dimming signal to the sensor control power supply unit 200.

[0032] The above PWM dimming signal is a signal that causes the "lighting unit 110 of the sensor-equipped lighting fixture 100" and the "general lighting fixtures 310, 320, 330, 340" to fade in and turn on to a predetermined dimming level, or to cause the "lighting unit 110 of the sensor-equipped lighting fixture 100" and the "general lighting fixtures 310, 320, 330, 340" that are lit at a predetermined brightness to fade out and turn off in conjunction.

[0033] For example, when the PWM signal generation unit 130 receives a detection signal (sensor ON signal) from the motion sensor 120 indicating that a person is present, while the "lighting unit 110 of the sensor-equipped lighting fixture 100" and the "general lighting fixtures 310, 320, 330, 340" are turned off, it generates a PWM dimming signal to cause the "lighting unit 110 of the sensor-equipped lighting fixture 100" and the "general lighting fixtures 310, 320, 330, 340" to fade in and illuminate in conjunction to a predetermined dimming level. This PWM dimming signal is a control signal that causes the "lighting unit 110 of the sensor-equipped lighting fixture 100" and the "general lighting fixtures 310, 320, 330, 340" to gradually brighten in conjunction (the light source slowly and "gently" lights up).

[0034] Furthermore, for example, when the PWM signal generation unit 130 receives a detection signal from the motion sensor 120 indicating that there is no person present (sensor OFF signal) while the "lighting unit 110 of the sensor-equipped lighting fixture 100" and the "general lighting fixtures 310, 320, 330, 340" are lit at a predetermined dimming level, it generates a PWM dimming signal to cause the "lighting unit 110 of the sensor-equipped lighting fixture 100" and the "general lighting fixtures 310, 320, 330, 340" to fade out and turn off in conjunction. This PWM dimming signal is a control signal that causes the brightness of the "lighting unit 110 of the sensor-equipped lighting fixture 100" and the "general lighting fixtures 310, 320, 330, 340" to gradually decrease in conjunction and turn off after a predetermined time (for example, a few seconds).

[0035] Sensor-controlled power supply unit 200 Next, the configuration of the sensor control power supply unit 200 of the lighting system in the first embodiment will be described with reference to Figures 3 and 4 mentioned above. Here, Figure 4 is a schematic diagram showing the external appearance of the sensor-controlled power supply unit that constitutes the lighting system of the first embodiment.

[0036] As shown in Figure 3, the sensor control power supply unit 200 has an LED lighting device 210 that receives a PWM dimming signal transmitted from the PWM signal generation unit 130 and supplies LED lighting power to the sensor-equipped lighting fixture 100 according to the received PWM dimming signal.

[0037] The LED lighting device 210 supplies LED lighting power to the sensor-equipped lighting fixture 100 to fade in the lighting unit 110 of the sensor-equipped lighting fixture 100 to a predetermined brightness level in response to the received PWM dimming signal, or to fade out the lighting unit 110 of the sensor-equipped lighting fixture 100 that is lit at a predetermined brightness. As a result, the light source (LED module 112) of the lighting unit 110 of the sensor-equipped lighting fixture 100 gradually brightens (the light source slowly and "gently" lights up), or the brightness of the light source (LED module 112) of the lighting unit 110 gradually decreases and turns off after a predetermined time (for example, after a few seconds).

[0038] Furthermore, the sensor control power supply unit 200 is configured to transmit the received PWM dimming signal to the general lighting fixtures 310, 320, 330, and 340. As a result, the light sources of the general lighting fixtures (lighting fixtures 310, 320, 330, and 340) will fade in when the lighting unit 110 of the sensor-equipped lighting fixture 100 fades in. Furthermore, the light sources of the general lighting fixtures (lighting fixtures 310, 320, 330, and 340) will fade out and turn off in conjunction with the light unit 110 of the sensor-equipped lighting fixture 100 when it fades out and turns off.

[0039] The LED lighting device (power supply unit) 210 is housed in a box-shaped enclosure 200a, as shown in Figure 4, and is composed of a power supply unit used in existing lighting fixtures.

[0040] 《General lighting equipment》 Next, we will explain the configuration of the general lighting fixtures (lighting fixture 310, lighting fixture 320, lighting fixture 330, and lighting fixture 340) with reference to Figure 3 mentioned above.

[0041] The lighting fixture 310 includes a PWM dimming power supply unit 311 that is electrically connected to the sensor control power supply unit 200, and an LED lighting unit 313 that has an LED module which is a light source.

[0042] The PWM dimming power supply unit 311 receives the PWM dimming signal transmitted from the PWM signal generation unit 130 via the sensor control power supply unit 200, and supplies LED lighting power to the LED lighting unit 313 corresponding to the content of the received PWM dimming signal. Furthermore, the LED lighting power supplied by the PWM dimming power supply unit 311 to the LED lighting unit 313 is the same as the LED lighting power supplied by the LED lighting device 210 of the sensor control power supply unit 200 to the sensor-equipped lighting fixture 100.

[0043] When the LED lighting unit 313 receives LED lighting power from the PMW dimming power supply unit 311, it fades in the light source to a brightness level corresponding to the supplied LED lighting power, or fades out the light source that is lit at a predetermined brightness level. Furthermore, since the LED lighting unit 313 is supplied with the same amount of power as the LED lighting power supplied to the sensor-equipped lighting fixture 100, it performs a fade-in illumination (or fade-out illumination) in conjunction with the light source of the sensor-equipped lighting fixture 100.

[0044] The lighting fixture 320 includes a PWM dimming power supply unit 321 and an LED lighting unit 323. The lighting fixture 330 includes a PWM dimming power supply unit 331 and an LED lighting unit 333. The lighting fixture 340 includes a PWM dimming power supply unit 341 and an LED lighting unit 343.

[0045] Furthermore, the "PWM dimming power supply units 321, 331, and 341" all have the same configuration as the PWM dimming power supply unit 311 of the lighting fixture 310. Furthermore, the "LED lighting units 323, 333, and 343" all have the same functionality as the LED lighting unit 313 of the lighting fixture 310.

[0046] When lighting fixtures 320, 330, and 340 receive a PWM dimming signal transmitted from the PWM signal generation unit 130 via the sensor control power supply unit 200, they perform a fade-in lighting operation (or a fade-out turning-off operation linked to the light source of the sensor-equipped lighting fixture 100) in conjunction with the light source of the sensor-equipped lighting fixture 100, similar to lighting fixture 310.

[0047] Thus, in the lighting system of the first embodiment, when the motion sensor 120 of the sensor-equipped lighting fixture 100 detects the presence or absence of a person, the sensor-equipped lighting fixture 100 and multiple general lighting fixtures (lighting fixtures 310, 320, 330, and 340) work together to fade in the light source to adjust the brightness to a dimming level corresponding to the detection, or fade out the light source that is lit at a predetermined dimming level.

[0048] In other words, according to the first embodiment, in response to the detection signal detected by the motion sensor 120, multiple lighting devices can be linked to fade in the illumination of light sources to a predetermined dimming level, or fade out the illumination of lit light sources. Therefore, for example, if the lighting system of the first embodiment is installed in a wide area where people pass through sporadically, a lighting environment that does not feel out of place in that area will be provided.

[0049] As described above, according to the first embodiment, a lighting system can be provided that easily realizes a lighting environment that is less jarring to a predetermined area by having multiple general dimmable lighting fixtures operate in conjunction with each other in response to a detection signal detected by the motion sensor 120.

[0050] Lighting system of the second embodiment Next, a lighting system according to a second embodiment of the present invention will be described with reference to Figures 5 to 7.

[0051] Here, Figure 5 is a schematic diagram illustrating the configuration of the lighting system of the second embodiment. Figure 6 is a schematic diagram illustrating the configuration of the sensor-dedicated equipment constituting the lighting system of the second embodiment. Figure 7 is a functional block diagram of the lighting system of the second embodiment.

[0052] In the lighting system of the second embodiment, the sensor-equipped lighting fixture 100 of the lighting system of the first embodiment is replaced with a sensor-only device 400 that does not have a lighting unit. Furthermore, in the lighting system of the second embodiment, the LED lighting device 210 of the sensor-controlled power supply unit 200 of the first embodiment is used for lighting external lighting, and a sensor-controlled power supply unit 500 with some functions modified is provided. In the description of the second embodiment, components identical to those in the first embodiment are denoted by the same reference numerals and their descriptions are omitted.

[0053] As shown in Figure 5, the lighting system of the second embodiment includes a sensor-dedicated device 400 equipped with a motion sensor 420 and a PWM signal generation unit 430, a plurality of general lighting fixtures (lighting fixtures 310, 320, 330, 340, and 350), and a sensor control power supply unit 500. The sensor control power supply unit 500 is electrically connected to the sensor-dedicated device 400 and also to each of the general lighting fixtures (lighting fixtures 310, 320, 330, 340, and 350).

[0054] Note that the general lighting fixtures 310, 320, 330, and 340 are the same as those in the first embodiment. Furthermore, the general lighting fixture 350 is a type of lighting fixture that does not have a power supply unit (PWM dimming power supply unit), and is turned on and off by the LED lighting power supplied from the sensor control power supply unit 500. Specifically, as shown in Figure 7, the general lighting fixture 350 has an LED lighting unit 353. This LED lighting unit 353 has the same function as the LED lighting unit 313 of the general lighting fixture 310.

[0055] As shown in Figure 6, the sensor-dedicated device 400 includes a housing 401, a human presence sensor 420 housed in the housing 401, a PWM signal generation unit 430, a trim 403, and a mounting spring 405. When the motion sensor 420 detects the presence of a person in the area below the dedicated sensor device 400, it transmits a detection signal (sensor ON signal) to the PWM signal generation unit 430 indicating that a person is present. On the other hand, when the motion sensor 420 does not detect the presence of a person in the area below the dedicated sensor device 400, it transmits a detection signal (sensor OFF signal) to the PWM signal generation unit 430 indicating that no person is present. The motion sensor 420 has the same configuration as the motion sensor 120 in the first embodiment.

[0056] The PWM signal generation unit 430 has the same configuration as the PWM signal generation unit 130 in the first embodiment. Specifically, the PWM signal generation unit 430 receives detection signals (sensor ON signal, sensor OFF signal) transmitted by the motion sensor 420, generates a PWM dimming signal corresponding to the content of the received detection signal, and transmits the generated PWM dimming signal to the sensor control power supply unit 500.

[0057] The sensor control power supply unit 500 has an LED lighting device 510 that receives a PWM dimming signal transmitted from the PWM signal generation unit 430 and supplies LED lighting power to the general lighting fixture 350 according to the received PWM dimming signal (see Figure 7). Furthermore, the sensor control power supply unit 500 is configured to transmit the received PWM dimming signal to the general lighting fixtures 310, 320, 330, and 340. Furthermore, the LED lighting device 510 has the same functions as the LED lighting device 210 of the first embodiment.

[0058] According to the configuration of the second embodiment, each of the multiple general lighting fixtures (lighting fixture 310, lighting fixture 320, lighting fixture 330, and lighting fixture 340) receives a PWM dimming signal transmitted from the dedicated sensor device 400 via the sensor control unit 500, and either fades in the light source to illuminate it to a brightness level corresponding to the received PWM dimming signal, or fades out the light source that is illuminated at a predetermined brightness.

[0059] Furthermore, the general lighting fixture 350, using the LED lighting power supplied from the LED lighting device 510, works in conjunction with the general lighting fixtures (lighting fixtures 310, 320, 330, and 340) to fade in the illumination of light sources or fade out the illumination of light sources that are lit at a predetermined brightness.

[0060] Thus, according to the configuration of the second embodiment, when the motion sensor 420 mounted on the sensor-dedicated device 400 detects the presence or absence of a person, multiple general lighting fixtures (lighting fixtures 310, 320, 330, 340, and 350) work in conjunction to fade in the light sources to adjust the brightness to a dimming level corresponding to the detection, or to fade out the light sources that are lit at a predetermined dimming level.

[0061] In other words, according to the second embodiment, in response to the detection signal detected by the motion sensor 120, multiple lighting devices can be linked to fade in the illumination of light sources to a predetermined dimming level, or fade out the illumination of lit light sources. Therefore, in the second embodiment, for example, similar to the first embodiment, it is possible to provide a lighting system that realizes a lighting environment that is less jarring to a predetermined area.

[0062] Furthermore, the present invention is not limited to the embodiments described above, and various modifications are possible within the scope of its gist.

[0063] For example, the lighting system of the first embodiment described above is configured with multiple general lighting fixtures (lighting fixture 310, lighting fixture 320, lighting fixture 330, lighting fixture 340), but it may also be configured with only one general lighting fixture. The number of general lighting fixtures is designed appropriately according to the size of the installation location of the lighting system.

[0064] Furthermore, in the second embodiment, a general lighting fixture 350 of the type without a power supply unit (PWM dimming power supply unit) is provided, but a system configuration without a general lighting fixture 350 is also possible. [Explanation of Symbols]

[0065] 100... Sensor-equipped lighting fixtures 110…LED lighting unit 111… Heatsink 112…LED module 113...Trim 114...Reflector 115... Mounting spring 116… Heatsink 130, 430...PWM signal generation section 200, 500... Sensor control power supply unit 220a... enclosure 210, 510… LED lighting device 310, 320, 330, 340, 350…General lighting equipment 311, 321, 331, 341...PWM dimming power supply section 313, 323, 333, 343, 353… LED lighting units 400... Sensor-specific equipment 401… Housing 403...Trim 405... Mounting spring

Claims

1. A lighting system comprising a first lighting fixture having a motion sensor and a first light source, a second lighting fixture having a second light source, and a sensor control power supply unit electrically connected to the first lighting fixture and the second lighting fixture, respectively, The aforementioned motion sensor is powered by the sensor power supplied from the sensor control power supply unit, detects the presence or absence of a person in a predetermined area, and outputs a detection signal indicating the detected information. The first lighting fixture has a PWM signal generation unit that acquires a detection signal output by the motion sensor, generates a PWM dimming signal to fade in the first lighting fixture and the second lighting fixture so that they work together to reach a predetermined dimming level, or to fade out the first lighting fixture and the second lighting fixture which are lit at a predetermined brightness, in accordance with the content of the acquired detection signal, and transmits the PWM dimming signal to the sensor control power supply unit. The sensor control power supply unit has a lighting device that receives a PWM dimming signal transmitted from the PWM signal generation unit and supplies lighting power to the first lighting fixture to fade in the first light source to a predetermined dimming level of brightness according to the received PWM dimming signal, or to fade out the first light source that is lit at a predetermined brightness, and also transmits the received PWM dimming signal to the second lighting fixture. The lighting system is characterized in that, upon receiving the PWM dimming signal transmitted from the sensor control power supply unit, the second lighting fixture, in conjunction with the first light source, fades in to illuminate the second light source so that it reaches a predetermined dimming level, or fades out the second light source, which is illuminated at a predetermined brightness, in conjunction with the first light source.

2. The lighting system according to claim 1, wherein a plurality of second lighting fixtures are provided, and each of them has a PWM dimming power supply unit that receives a PWM dimming signal transmitted from the PWM signal generation unit of the sensor control power supply unit and supplies lighting power corresponding to the content of the received PWM dimming signal to the second light source.

3. A lighting system comprising a dedicated sensor device having a motion sensor, a plurality of lighting fixtures, and a sensor control power supply unit electrically connected to each of the dedicated sensor device and the plurality of lighting fixtures, The aforementioned lighting fixture has a light source, The aforementioned motion sensor is powered by the sensor power supplied from the sensor control power supply unit, detects the presence or absence of a person in a predetermined area, and outputs a detection signal indicating the detected information. The sensor-dedicated device has a PWM signal generation unit that acquires a detection signal output by the motion sensor, generates a PWM dimming signal corresponding to the content of the acquired detection signal so that multiple lighting fixtures fade in to a predetermined dimming level, or multiple lighting fixtures that are lit at a predetermined brightness fade out to a predetermined level, and transmits the PWM dimming signal to the sensor control power supply unit. The sensor control power supply unit, upon receiving a PWM dimming signal transmitted from the PWM signal generation unit, transmits the received PWM signal to multiple lighting fixtures. A lighting system characterized in that, upon receiving the PWM dimming signal transmitted from the sensor-controlled power supply unit, the multiple lighting fixtures synchronize to fade in the illumination of the light sources to a predetermined dimming level, or to fade out the illumination of the light sources that are illuminated at a predetermined brightness.

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