JP2012174663A - Light control illumination device and light control illumination system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light control illumination device which is compact and low-cost, and provides suitable lighting matching traffic volume and attains high energy-saving effects, and to provide a light control illumination system.SOLUTION: The light control illumination device includes light emission means 3 which is set on a traffic line where a body passes and emits light toward a light area LA extending in the traffic line direction; a body detection sensor 1 which detects a body in a sensor area SA including at least an area width in a direction orthogonal to the traffic line direction in a part of the light area, and outputs a detection signal; and control means 5 which receives the detection signal and controls the light emission of the light emission means. When the body detection sensor 1 outputs the detection signal, the control means 5 generates a light emission control signal having illuminance set according to the number of times of body detection of the detection signal, and controls the light emission means 3 based on the light emission control signal to emit light with the illuminance for a predetermined time.

Description

  The present invention relates to a light control illumination system that performs light control illumination toward an area through which an object passes when an object is detected by a detection sensor.

  Conventionally, when an object such as a person or an object is detected by a detection sensor in a detection (sensor) area set on a flow line through which the object passes and a detection signal is output, the detection signal is output based on the detection signal. There is known a dimming illumination device that performs dimming illumination by controlling the light emission of the light emitting means toward the light area. As an example of the dimming lighting device, there is an illumination control device that detects a vehicle entering a tunnel and increases the tunnel lighting according to the traffic volume in the tunnel (for example, Patent Document 1).

  FIG. 5A is a side layout diagram showing a conventional dimming lighting system, in which a plurality (two in this example) of street lamps (dimming lighting devices) 50 are arranged along a road R or a sidewalk. When the object detecting sensors 1-a and 1-b detect the person H in the sensor area SA by the first dimming illumination device 50, the light emitting means (LED) 3 is moved to the second unit by the person H moving. When the object detection sensors 2-a and 2-b detect the person H, the LED 4 emits light at a preset illuminance and illuminates the light area LA. In accordance with the movement direction of the person H, illumination is performed in the light area LA in the sensor area SA where the person H is sequentially detected. In this case, as shown in FIG. 5B, the sensor area SA and the light area LA substantially coincide with each other, and a sufficient crime prevention lighting effect is obtained for the entire sensor area.

  FIG. 6 is a time chart showing the operation of this conventional apparatus. FIG. 6A shows a case where one person H is detected. When a person H is detected by the first object detection sensor 1-a or 1-b, a detection (sensor) signal is output, and b. As described above, the LED 3 emits light at a set illuminance for a predetermined time, and illuminates the light area LA that substantially matches the two sensor areas SA of the object detection sensors 1-a and 1-b. Person H moves and c. When the person H is detected by the second object detection sensor 2-a or 2-b as shown in FIG. Behaves like E. When each dimming lighting device is wirelessly communicated with each other like this, when the person detection sensor 1 or 2 of any dimming lighting device 50 detects the person H and outputs a detection (sensor) signal, All the light control lighting devices 50 can also illuminate each light area LA with the set illuminance.

  FIG. 6B is a time chart showing the operation when detecting a plurality of persons in the conventional apparatus. a. When the first object detection sensor 1-a or 1-b detects a plurality of, for example, three persons sequentially, as shown in FIG. As described above, the LED 3 emits light at the set illuminance for a predetermined time to illuminate the light area LA that substantially matches the two sensor areas SA of the detection sensors 1-a and 1-b. Each person H moves and c. In the same manner, when the second object detection sensor 2-a or 2-b detects each of the three persons, a detection (sensor) signal is output and the LED 4 is similarly d. Behaves like E. In the case of wireless communication as described above, illumination similar to the above can be performed.

  Conventionally, there has been known an illumination device that performs illumination and threatening illumination by changing the quality of light according to the time when the sensor unit detects a person (for example, Patent Document 2). Also in this case, it is assumed that the sensor area and the light area substantially coincide with each other in order to obtain a sufficient crime prevention lighting effect for the entire sensor area.

JP-A-6-76953 Japanese Patent No. 3774754

  However, as in the prior art, the sensor area and the light area are matched with each other because when the light area is widened, a sensor with high detection performance is required, which leads to an increase in size and cost of the detection sensor. On the other hand, if a plurality of detection sensors having a narrow sensor area are arranged with respect to a wide light area, the configuration becomes complicated and the cost is increased.

  As shown in FIG. 6A, when a person H is detected, when the LEDs 3 and 4 emit light for a predetermined time with a set illuminance, even one person emits light with a large set illuminance, so the energy saving effect is small. In addition, as shown in FIG. 6 (B), when a plurality of people are detected and the traffic volume is increased, the same set illuminance is used. On the other hand, convenience and crime prevention are reduced, and on the other hand, simply performing a lighting with a high set illuminance does not increase the energy saving effect so much.

  The present invention provides a dimming lighting device and dimming lighting system that solves the above-described problems, enables small-sized and low-cost, appropriate lighting according to the traffic volume, and realizes a high energy saving effect. The purpose is to provide.

In order to achieve the above object, a light control lighting device according to one configuration of the present invention includes a light emitting unit configured to emit light toward a light area that is set on a flow line through which an object passes and extends in the flow line direction, and the light area. An object detection sensor that detects an object in a sensor area including at least an area width in a direction orthogonal to the direction of the flow line and outputs a detection signal; and the light emitting means emits light upon receiving the detection signal And when the detection signal is output from the detection sensor, the control unit generates a light emission control signal in which illuminance is set in accordance with the number of object detections based on the detection signal. Based on the signal, the light emitting means is controlled to emit light for a predetermined time at the illuminance.
Here, the flow line through which an object passes means a route that is inevitably expressed when a person or an object moves naturally, and means a route in an area such as a road, a sidewalk, a park, and a parking lot.

  According to this configuration, the object detection sensor detects an object in the sensor area that is a part of the light line direction of the light area. Therefore, even if the light area is widened, it is necessary to improve the detection performance according to the area. Therefore, the sensor can be reduced in size and cost. At the same time, the light emitting means emits light for a predetermined time based on the light emission control signal in which the illuminance is set according to the number of detected objects by the detection signal, so the traffic volume can be detected even if the sensor area is set narrower than the light area. Appropriate lighting according to the traffic volume is possible, and the energy saving effect can be enhanced. Thereby, it is possible to achieve appropriate lighting according to the traffic volume with a small size and low cost, and to realize a high energy saving effect.

  Preferably, the control means sets the illuminance on the basis of a light emission control signal in which the illuminance is set to be stepwise higher each time the number of outputs of the detection signal increases and is set to be stepwise lower after a predetermined time. Controls the light emission. Accordingly, it is possible to perform appropriate lighting according to the traffic volume and to increase the energy saving effect.

  A dimming illumination system according to another configuration of the present invention includes a plurality of the dimming illumination devices, and each dimming illumination device transmits and receives each light emission control signal to and from other dimming illumination devices wirelessly or by wire. Each of the dimming lighting device control means, based on the emission control signal of the highest illuminance among the emission control signals according to the number of object detection by the detection signal received from each dimming lighting device, The light emission of each light emitting means is controlled so as to illuminate each light area in common at the highest illuminance. Therefore, even if the sensor area is set to be narrower than the light area, the entire plurality of light areas can be brightened by the plurality of dimming illumination devices with the illuminance corresponding to the traffic volume.

  Preferably, the illuminance for each number of object detections by the detection signal in the light emission control signal is transmitted from a single external device to each control means via the transceiver and set. Therefore, since each dimming lighting device can be controlled by a single external device, the system configuration is simplified.

  In the present invention, since the object detection sensor detects an object in the sensor area that is a part of the light line in the flow direction, the sensor can be reduced in size and cost, and the number of objects detected by the detection signal can be reduced. Since the light is emitted for a predetermined time based on the light emission control signal in which the illuminance is set according to the light level, even if the sensor area is set to be narrower than the light area, appropriate illumination according to the traffic volume is possible, and the energy saving effect can be enhanced. .

(A) is a side arrangement view showing a dimming illumination system having a plurality of dimming illumination devices according to the present invention, and (B) is a plan view showing a sensor area and a light area. It is a block diagram which shows a light control illumination system. (A), (B) is a time chart which shows an example of operation | movement of a light control illumination system. (A), (B) is a figure which shows the operation state in the case of detecting many persons. (A) is a side view showing a conventional dimming illumination system, and (B) is a plan view showing a sensor area and a light area. (A), (B) is a time chart which shows operation | movement of the conventional light control illumination system.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1A is a side view showing a dimming illumination system according to the present invention, and FIG. 1B is a plan view showing a sensor area and a light area. As shown in FIG. 1A, this dimming illumination system includes a plurality of (in this example, two) dimming illumination apparatuses 10 such as road lights on streets R and sidewalks. The dimming illumination device 10 includes light emitting means 3 such as an LED (light emitting diode) that emits light toward a light area LA that is set on a flow line through which an object such as a person H or an object passes and extends in the flow line direction X. And an object detection sensor 1 for detecting an object in the sensor area SA set in a part of the light area LA and outputting a detection signal. The first object detection sensor 1 and the LED 3 are given different reference numerals as the second object detection sensor 2 and the LED 4, but this is merely for convenience of explanation. Is.

  As shown in FIG. 1B, the sensor area SA on the road R is set narrower than the light area LA, and the area width in the direction Y perpendicular to the flow direction X in a part of the light area LA. (Road width) This area includes at least W, and is an area where an object passing on a flow line with an area width W can be detected without fail. Therefore, even if the object detection sensor 1 sets the sensor area SA to be narrower than the light area LA, the object detection sensor 1 can detect the traffic volume of people and objects on the road R.

  As shown in FIG. 1A, the dimming illumination device 10 has the object detection sensor 1 and the LED 3 attached to a mounting pole P. In addition, the dimming device 10 includes a control unit (controller) 5 in FIG. 2, a transmitter / receiver 6 that wirelessly transmits and receives a light emission control signal from each dimming device 10, and a power supply unit 7 that supplies power to the LED 3. I have. The transceiver 6 has a transmission / reception setting unit, and can receive a signal from the outside or transmit a signal to the outside.

  In this example, the object detection sensor 1 uses an AIR (active infrared) sensor in which infrared light is projected in a sensor area SA from a projector (not shown) and received by a light receiver (not shown). However, a PIR (passive infrared) type detection sensor or a microwave (MW) sensor composed only of a light receiving unit that detects infrared rays emitted from the human body H in the sensor area SA may be used.

  FIG. 2 is a block diagram showing the dimming illumination system. A dimming illumination device 10 constituting the dimming illumination system includes the object detection sensor 1 (or 2), the LED 3 (or 4), a control means (controller) 5, a transceiver 6 and a power supply unit 7. In addition, a single external device 8 that generates illuminance data in a light emission control signal, which will be described later, and transmits the illuminance data to each dimming illumination device 10 is provided. The light emission control signals are transmitted and received wirelessly by the transmitter / receiver 6 of each dimming illumination device 10, and the transmitted light emission control signals are input to the respective control means 5. Note that the light emission control signal may be transmitted to each control means 5 by wire instead of wirelessly.

  2 controls the entire apparatus, and when a detection signal is output from the object detection sensor 1 (or 2), a light emission control signal in which illuminance is set according to the number of detected objects by the detection signal. Based on this light emission control signal, the LED 3 (or 4) is controlled to emit light at the illuminance for a predetermined time. In this example, the control means 5 sets the illuminance to a stepwise increase each time the number of detection signal outputs increases, and the LED 3 (4) based on a light emission control signal that is set to a stepwise decrease after a predetermined time has elapsed. Controls the light emission. The control means 5 adjusts the voltage supplied to the LED 3 by varying the on / off pulse width of the supply voltage from the power supply unit 7 and the pulse width interval in, for example, a PWM (Pulse Width Modulation) control method, and variously Control to switch to illuminance.

  The external device 8 is composed of, for example, a personal computer (PC) having a communication function, generates illuminance data for each stage of the number of detected objects based on the detection signal in the light emission control signal of each dimming lighting device 10, and the transceiver 6 To each control means 5 via. The control means 5 generates a light emission control signal based on the set illuminance at each stage. As a result, the gradient of the stepwise change in illuminance can be easily varied by the external device 8 and each dimming illumination device 10 can be controlled by the single external device 8, thereby simplifying the system configuration. The external device 8 can also generate and transmit a plurality of dimming patterns including threatening illumination in addition to the normal illumination with the illuminance changed.

  Furthermore, the control means 5 is based on the light emission control signal having the highest illuminance among the light emission control signals corresponding to the number of outputs of the detection signals received from the dimming lighting devices 10, and is commonly used for the highest illuminance. The light emission of each LED 3 is controlled so as to illuminate the light area LA. Therefore, the whole of the plurality of light areas LA can be brightened by the plurality of light control lighting devices 10 with the illuminance according to the number of people (traffic volume).

  FIG. 3 is a time chart showing an example of the operation of the dimming lighting system. FIG. 3A is a time chart showing an operation when one person is detected. a. When one person H is detected by the first object detection sensor 1 as shown in FIG. As described above, the LED 3 emits light for a predetermined time with the illuminance for one person, and the light area LA wider than the sensor area SA of the object detection sensor 1 is illuminated. Person H moves and c. Similarly, when the person H is detected by the second object detection sensor 2 as shown in FIG. Behaves like As a result, it is possible to illuminate the light area LA with sufficient brightness from the point of view of crime prevention for one person H, and since the illuminance is not increased unnecessarily as before, the energy saving effect is increased. can do.

  E. When the dimming lighting devices 10 communicate with each other wirelessly as described above, the person detection sensors 1 and 2 of any of the dimming lighting devices 10 detect the person H and output a light emission control signal (operation signal). When this is done, all the light control lighting devices 10 illuminate each light area LA in common with the illuminance for one person. Thereby, the whole of each light area LA becomes bright, and it can heighten a crime prevention effect.

  FIG. 3B is a time chart showing an operation when a plurality of persons are detected. a. When a plurality of, for example, three people are sequentially detected by the first object detection sensor 1 as shown in FIG. First, the LED 3 starts to emit light with the illuminance of one person for the first person, emits light with the illuminance of two persons for the second person, emits light with the illuminance of three persons for the third person, and the sensor of the object detection sensor 1 The light area LA wider than the area SA is illuminated. The illuminance emission for one person ends in a predetermined time after detection of the first person, and the illuminance emission of one person further ends in the predetermined time after detection of the second person, and all emission occurs in the predetermined time after detection of the third person. Ends. Each person H moves and c. When three persons are sequentially detected by the second object detection sensor 2 as shown in FIG. Behaves like

  FIGS. 4A and 4B are diagrams illustrating an operation state when a large number of people are detected. In FIG. 4A, the vertical axis represents the number of passers-by detected by the object detection sensor 1, for example, and the horizontal axis represents the light emission state of the illuminance for the detected number of people in the LED 3. As shown in FIG. 4A, when a large number of people, for example, 48 people are sequentially detected, the LED 3 starts to emit light with an illuminance for one person, and after a predetermined time (for example, 20 counts) The light emission of illuminance is finished, and this state is repeated for each person. FIG. 4B shows the light emission state of the LED 3 in FIG. 4A, where the vertical axis indicates the illuminance of the LED 3 and the horizontal axis indicates time. As shown in FIG. 4B, the illuminance of the LED 3 gradually increases as the number of passers-by increases. It becomes higher and goes down step by step as it passes this peak.

  Thus, the control means 5 causes the LED 3 (4) to emit light for a predetermined time based on the light emission control signal in which the illuminance is set according to the number of detected objects by the detection signal, so that the sensor area SA is set narrower than the light area LA. However, appropriate lighting according to the number of people (traffic volume) is possible. In addition, as compared with the conventional case of performing constant illumination with the set illuminance for three people, for example, the dimming illumination in which the illuminance is changed stepwise according to the number of people (traffic volume) is performed. The amount of power consumption is reduced and the energy saving effect is increased. Moreover, since the brightness for the number of persons is ensured, visibility is improved and convenience is ensured.

  FIG. 3 (B) e. When each dimming illumination device 10 is wirelessly communicated with each other by the transmission / reception unit 6 as described above, a light emission control signal (operation signal with the highest illuminance due to the most people being detected by any one of the dimming illumination devices 10) ) Is output, and all the light control lighting devices 10 illuminate each light area LA in common at the highest illuminance. As a result, the entire light area becomes brighter as the number of people (traffic volume) increases. In addition, since the dimming lighting devices 10 can share information with each other by wireless communication, it is possible to supplement each other with an area shortage or a detection error in the sensor area SA.

  In this way, in the present invention, the object detection sensor detects an object in the sensor area that is a part of the light line direction of the light area. Therefore, even if the light area is widened, the detection performance is increased according to the area. Since this is not necessary, the sensor can be reduced in size and cost. At the same time, since the light emitting means emits light for a predetermined time based on the light emission control signal in which the illuminance is set according to the number of detected objects by the detection signal, the traffic volume can be detected even if the sensor area is set narrower than the light area. Appropriate lighting according to the traffic volume is possible, and the energy saving effect can be enhanced. Thereby, it is possible to achieve appropriate lighting according to the traffic volume with a small size and low cost, and to realize a high energy saving effect.

  In the embodiment described above, two dimming lighting devices are arranged along the road, but three or more devices may be arranged. Moreover, you may abbreviate | omit the transmission / reception part and external apparatus of each light control lighting apparatus as needed.

  In the above embodiment, the dimming lighting device is applied to street lights on roads and sidewalks, but it may be applied to lighting in parking lots, parks, etc. Each dimming illumination device is arranged along the flow line.

1: Object detection sensor 2: Object detection sensor 3: Light emitting means (LED)
4: Light emitting means (LED)
5: Control means (controller)
6: Transmission / reception unit 7: Power supply unit 8: External device 10: Light control lighting device H: Person LA: Light area SA: Sensor area

Claims (4)

A light emitting means that emits light toward a light area that is set on a flow line through which an object passes and extends in the flow line direction, and a sensor area that includes at least a part of the light area corresponding to an area width in a direction orthogonal to the flow line direction An object detection sensor that detects an object within and outputs a detection signal; and a control unit that receives the detection signal and controls light emission of the light emitting unit,
When a detection signal is output from the detection sensor, the control means generates a light emission control signal in which illuminance is set according to the number of object detections based on the detection signal, and the light emission means is controlled based on the light emission control signal. Control to emit light for a predetermined time at the illuminance,
Dimmable lighting device. In claim 1,
The controller emits light from the light emitter based on a light emission control signal in which the illuminance is set to be gradually increased each time the number of object detections by the detection signal is increased, and is set to be gradually decreased after a predetermined time has elapsed. A dimming lighting device that controls. A plurality of light control lighting devices according to claim 1 or 2,
Each dimming lighting device has a transmission / reception unit that transmits and receives each light emission control signal to other dimming lighting devices wirelessly or by wire,
The control means of each dimming illumination device is common to the highest illuminance based on the highest illuminance emission control signal among the emission control signals corresponding to the number of detected objects by the detection signal received from each dimming illumination device. A dimming lighting system that controls the light emission of each light emitting means so as to illuminate the respective light areas. In claim 3,
The dimming illumination system in which the illuminance for each number of detected objects by the detection signal in the light emission control signal is set by being transmitted from a single external device to each control means via the transceiver.

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