JP2011243507A - Illuminating fixture, and illuminating system using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small-size illuminating fixture in which deterioration of detection sensitivity of a radio-wave type sensor is suppressed, and to provide an illuminating system using the same.SOLUTION: The illuminating fixture A is provided with: a light source 3 consisting of, for example, a fluorescent lamp; a radio-wave type sensor 5 which detects existence of a human in a prescribed detection area; a lighting circuit which controls output power to the illuminating source 3 based on the detection result of the sensor 5; and a translucent panel 4 which is arranged between the light source 3 and the sensor 5 and the illuminating area. A lens part 6 as a control functional part which controls directivity of the sensor 5 is installed at a site corresponding to a direction range "a" of the sensor 5 in the translucent panel 4. In the illuminating fixture A, the electromagnetic wave which is reflected and returned by an object in the detection area is refracted by the lens part 6 and collected to the sensor 5. As a result, the amount of electromagnetic wave incident into the sensor 5 is increased, thereby, deterioration of the detection sensitivity of the sensor 5 can be suppressed.

Description

  The present invention relates to a lighting fixture and a lighting system using the same.

  Conventionally, lighting fixtures using a human body detection sensor have been provided. For example, when a PIR (Passive Infrared Radiation) sensor is used, a malfunction is not caused by an infrared component included in light emitted from a light source. It was necessary to separate the PIR sensor from the light source. For this reason, the entire apparatus is increased in size to the extent that the space for placing the PIR sensor is necessary, and the PIR sensor is exposed, which is not desirable in terms of design.

  A lighting fixture using a radio wave sensor has also been proposed (see, for example, Patent Document 1). This lighting apparatus includes a radio wave type human sensor that detects the presence of a human body, a light source that is turned on when a human body is detected by the human sensor, and a housing that holds the human sensor and the light source. The sensor is disposed on the back side of the light source. For this reason, when the illuminator is viewed from the outside, the human sensor is in a position where it is difficult to see, which is preferable in terms of design. Furthermore, lighting fixtures using radio wave type human sensors are also provided in which shades are arranged in front of the light source and human sensor, and in this case as well, when the lighting fixtures are viewed from the outside, The sensor is invisible.

JP 2010-55783 A (paragraph [0012] -paragraph [0016] and FIG. 1)

  The lighting apparatus using the above-described radio wave type human sensor is designed to prevent the human sensor from being seen by the light source and shade, and is preferable in terms of design. There was a possibility that the detection sensitivity would decrease.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a small luminaire that suppresses a decrease in detection sensitivity of a radio wave sensor and an illumination system using the same. It is in.

  The luminaire of the present invention includes a light source, a radio wave sensor that detects the presence or absence of a person in a predetermined detection area, a lighting circuit that controls lighting power to the light source based on a detection result of the sensor, a light source, and a sensor. And a translucent panel disposed between the illumination area and a control function unit for controlling the directivity of the sensor is provided in the translucent panel.

  In this lighting apparatus, it is preferable that the control function unit is configured by a lens unit formed in a portion corresponding to the directivity range of the sensor in the translucent panel.

  Further, in this lighting apparatus, the control function unit is made of a dielectric having a dielectric constant different from that of the translucent panel, and is configured by a dielectric layer disposed in a portion corresponding to the directivity range of the sensor in the translucent panel. It is also preferable.

  Furthermore, in this lighting apparatus, the dielectric layer is preferably made of a light-transmitting dielectric.

  In this lighting fixture, it is also preferable to adjust the directivity of the sensor by changing the thickness dimension of the dielectric layer in the illumination direction of the light source.

  Furthermore, in this lighting fixture, it is also preferable that the control function unit is provided on at least one surface of the translucent panel in the illumination direction of the light source.

  Moreover, in this lighting fixture, it is also preferable that the control function part is provided in the whole translucent panel in the illumination direction of a light source.

  The lighting system of the present invention includes a plurality of the above-described lighting fixtures.

  There is an effect that it is possible to provide a small lighting fixture and a lighting system in which a decrease in detection sensitivity of the radio wave type sensor is suppressed.

The example which represented the lighting fixture of Embodiment 1 typically is shown, (a) is a front view, (b) is a side view, (c) is a top view. It is an example of the lens part provided in the translucent panel which comprises the same as the above. It is a schematic block diagram same as the above. The example which represented the lighting fixture of Embodiment 2 typically is shown, (a) is a front view, (b) is a side view, (c) is a top view. The other example same as the above is shown, (a) is a front view, (b) is a side view, and (c) is a top view. Still another example is shown, in which (a) is a front view, (b) is a side view, and (c) is a top view. The example which represented the lighting fixture of Embodiment 3 typically is shown, (a) is a front view, (b) is a side view, (c) is a top view. The other example same as the above is shown, (a) is a front view, (b) is a side view, and (c) is a top view.

  Hereinafter, embodiments of a lighting apparatus according to the present invention will be described with reference to the drawings. The luminaire according to the present invention is attached to, for example, a ceiling surface and is used to illuminate an illumination area such as a room.

(Embodiment 1)
FIG. 1 is an example schematically showing the lighting fixture A of the first embodiment. The lighting fixture A includes a light source 3, a radio wave sensor 5 for detecting the presence or absence of a person in a predetermined detection area, and a light source. 3 and the translucent panel 4 arranged between the sensor 5 and the illumination area.

  The light source 3 is a straight tube fluorescent lamp as shown in FIGS. 1A and 1B, for example, and the longitudinal direction of the instrument main body 1 formed in a horizontally long rectangular box shape (FIG. 1A). It is mechanically held by a pair of lamp sockets 2 and 2 provided at both ends. The light source 3 is electrically connected to a lighting circuit 8 to be described later via these lamp sockets 2 and 2, and lighting power is supplied via the lamp sockets 2 and 2.

  The sensor 5 is composed of, for example, a millimeter wave sensor using a millimeter wave with a predetermined frequency, and is attached to the instrument body 1 by appropriate attachment means. In addition, the broken-line area | region a in FIG.1 (b) has shown the directivity range of the said sensor 5. FIG.

  The translucent panel 4 is made of, for example, light-transmitting glass, and is disposed on the front side (upper side in FIG. 1A) so as to cover the light source 3 and the sensor 5. That is, in the lighting fixture A of this embodiment, the upper side of the translucent panel 4 is an illumination area in FIG. In addition, the up-down direction in Fig.1 (a) does not prescribe | regulate the attachment direction of the lighting fixture A. FIG.

  FIG. 3 is a schematic block diagram of the luminaire A. The control circuit 7 outputs a control signal corresponding to the detection result of the sensor 5, and the output power to the light source 3 according to the control signal output from the control circuit 7. And a lighting circuit 8 for controlling the lighting. While the person is detected by the sensor 5, the control circuit 7 outputs a lighting signal to the lighting circuit 8, and the lighting circuit 8 lights the light source 3 according to the lighting signal input from the control circuit 7. Conversely, when no person is detected by the sensor 5, the control circuit 7 outputs a turn-off signal to the lighting circuit 8, and the lighting circuit 8 turns off the light source 3 according to the turn-off signal input from the control circuit 7. Here, the control circuit 7 and the lighting circuit 8 are accommodated in the instrument body 1 and are electrically connected to the light source 3 or the sensor 5 by electric wires (not shown).

  Here, in the lighting fixture A of the present embodiment, a plurality of (10 in FIG. 1C) lens portions 6 are provided in a portion corresponding to the directivity range a of the radio wave sensor 5 in the translucent panel 4. Yes. As shown in FIG. 2, these lens units 6 are convex lenses that are convex downward, and refract the electromagnetic waves transmitted from the sensor 5 disposed at the focal point F1 so that the electromagnetic waves become parallel waves. Conversely, the electromagnetic wave reflected and returned by an object (for example, a person) in the detection area is refracted by the lens unit 6 and is incident on the sensor 5 disposed at the focal point F1. The sensor 5 determines the presence or absence of an object based on the frequency difference between the electromagnetic wave transmitted by itself and the electromagnetic wave reflected and returned. In addition, said lens part 6 is formed by shaving the translucent panel 4 in the lens shape in the thickness direction, for example. Here, in the present embodiment, the lens unit 6 constitutes a control function unit that controls the directivity of the sensor 5.

  Here, when the entire translucent panel 4 is formed into a lens shape, the original illumination efficiency and light distribution characteristics of the lighting fixture A may change, so the lens-shaped portion is set to the minimum necessary size. Therefore, in the present embodiment, the lens portion 6 is provided only in a portion corresponding to the directivity range a of the sensor 5.

  Thus, according to the present embodiment, the electromagnetic wave reflected by the object in the detection area and refracted by the lens unit (control function unit) 6 can be collected in the sensor 5. As a result, since the amount of electromagnetic waves incident on the sensor 5 increases, a decrease in detection sensitivity of the sensor 5 can be suppressed. Moreover, since it is not necessary to provide the space which arrange | positions the lens part 6 by providing the lens part 6 in the translucent panel 4, the enlargement of the lighting fixture A can be suppressed. Furthermore, since the lens unit 6 is provided only in a portion corresponding to the directivity range a of the sensor 5, changes in the illumination efficiency and light distribution characteristics inherent to the lighting fixture A can be suppressed to a low level.

  In this embodiment, the lens unit 6 is a convex lens so that the electromagnetic wave transmitted from the sensor 5 becomes a parallel wave (see FIG. 2). For example, the lens unit 6 is formed in a shape in which the electromagnetic wave spreads outward. Alternatively, the shape of the lens unit 6 is not limited to this embodiment. In this case, since the electromagnetic waves transmitted through the lens unit 6 are expanded, the detection area can be set wide. Further, the lens unit 6 is not limited to the one having a continuous incident surface as shown in FIG. 2, and may be a so-called Fresnel lens having a saw-like cross section, for example. In this case, since it is possible to reduce the thickness, it is preferable to use a Fresnel-shaped one that transmits light like the translucent panel 4. Further, the number and arrangement of the lens units 6 are not limited to the present embodiment, and may be set as appropriate.

(Embodiment 2)
Embodiment 2 of the lighting fixture A which concerns on this invention is demonstrated based on FIGS. In the first embodiment, the control function unit is configured by the lens unit 6 formed by processing the translucent panel 4, but in the present embodiment, the control unit is made of a dielectric having a dielectric constant different from that of the translucent panel 4. The dielectric layer 9 constitutes a control function unit. In addition, about another structure, it is the same as that of Embodiment 1, the same code | symbol is attached | subjected to the same component and description is abbreviate | omitted.

  The lighting fixture A of this embodiment is provided with the light source 3, the sensor 5, and the translucent panel 4, as shown in FIG.

  Here, in the example shown in FIG. 4, the light transmitting panel 4 is a portion corresponding to the directivity range a of the sensor 5, and a plurality of (on the upper surface in FIG. 4A) (upper surface in FIG. 4A) 10 dielectric layers 9 in FIG. 4C are provided. These dielectric layers 9 are made of a dielectric material having a dielectric constant different from the dielectric constant (for example, 6 to 7) of the glass that is the material of the transparent panel 4, and correspond to the difference in dielectric constant with the transparent panel 4. A refraction effect can be obtained. That is, similarly to the first embodiment described above, the electromagnetic wave reflected and returned by the object in the detection area is refracted by the dielectric layer 9 and collected by the sensor 5. The dielectric constant of the dielectric is appropriately determined so as to obtain a desired refraction angle. Here, in the present embodiment, the dielectric layer 9 constitutes a control function unit that controls the directivity of the sensor 5.

  FIG. 5 shows another example of the lighting fixture A according to the present embodiment. In the example shown in FIG. 4, the dielectric layer 9 is provided on the upper surface side of the translucent panel 4, but in the example shown in FIG. The body layer 9 is provided on the lower surface side of the translucent panel 9. Since the other configuration is the same as that of FIG. 4, detailed description thereof is omitted.

  Thus, according to this embodiment, the electromagnetic wave reflected by the object in the detection area and refracted by the dielectric layer (control function unit) 9 can be collected in the sensor 5. As a result, since the amount of electromagnetic waves incident on the sensor 5 increases, a decrease in detection sensitivity of the sensor 5 can be suppressed. Moreover, since the dielectric layer 9 is provided in the translucent panel 4, it is not necessary to provide a space for disposing the dielectric layer 9, so that the size of the lighting fixture A can be suppressed. Furthermore, since the dielectric layer 9 is provided only in the part corresponding to the directivity range “a” of the sensor 5, changes in the lighting efficiency and light distribution characteristics inherent to the lighting fixture A can be kept low. In addition, as shown in FIG. 5, when the dielectric layer 9 is provided only on the lower surface (inner side surface) of the translucent panel 4, the dielectric layer 9 is not visually recognized from the outside, thereby suppressing the deterioration of the design. Can do.

  Next, FIG. 6 shows still another example of the lighting fixture A of the present embodiment. In the example shown in FIGS. 4 and 5, the dielectric layer 9 is provided only on one surface of the translucent panel 4. In the example shown in FIG. 6, the dielectric layer 9 is provided over the entire thickness direction of the translucent panel 4. As a result, the performance as a lens can be enhanced as compared with the lighting fixture A shown in FIGS. 4 and 5. Since other configurations are the same as those in FIGS. 4 and 5, detailed description is omitted.

  Here, the dielectric layer 9 is preferably formed of a light-transmitting dielectric. In this case, since the amount of light transmitted through the light-transmitting panel 4 can be increased, the illumination efficiency is reduced. It can be further suppressed.

  In the example shown in FIGS. 4 and 5 described above, the dielectric layer 9 is provided only on one surface of the translucent panel 4, but the dielectric layer 9 is provided on both surfaces of the translucent panel 4. Also good. Further, the number and arrangement of the dielectric layers 9 are not limited to the present embodiment, and may be set as appropriate.

(Embodiment 3)
Embodiment 3 of the lighting fixture A which concerns on this invention is demonstrated based on FIG.7 and FIG.8. In addition, about the structure similar to Embodiment 1 and 2 mentioned above, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  The lighting fixture A of this embodiment is provided with the light source 3, the sensor 5, and the translucent panel 4, as shown in FIG.

  In this embodiment, the thickness dimension of the dielectric layer 9 provided in the translucent panel 4 is made thicker than the translucent panel 4 as shown in FIGS. 7A and 7B. As shown in FIG. 8A and FIG. 8B, the directivity of the sensor 5, that is, the refraction angle of the electromagnetic wave transmitted from the sensor 5 is adjusted by making it thinner than the thickness dimension of the translucent panel 4. . As a result, the detection area of the sensor 5 can be arbitrarily set according to the use location.

  In Embodiments 1 to 3 described above, a fluorescent lamp is used as a light source. However, an incandescent lamp or an LED may be used, for example. Further, the sensor 5 is not limited to the millimeter wave sensor, and any other sensor may be used as long as it is a radio wave type sensor. Furthermore, in Embodiments 1 to 3, the light source 3 is turned off when no person is detected by the sensor 5, but the light source 3 may be dimmed and turned on at a predetermined dimming level, for example.

  Here, when a plurality of the above-described lighting fixtures A are used, it is possible to provide an illumination system in which a decrease in detection sensitivity of the radio wave sensor 5 is suppressed.

3 Light source 4 Translucent panel 5 Sensor 6 Lens part (control function part)
8 Lighting circuit A Lighting equipment

Claims (8)

A light source, a radio wave sensor for detecting the presence or absence of a person in a predetermined detection area, a lighting circuit for controlling lighting power to the light source based on a detection result of the sensor, the light source, the sensor, and an illumination area And a translucent panel arranged between
A lighting apparatus, wherein a control function unit for controlling directivity of the sensor is provided in the translucent panel.   The lighting device according to claim 1, wherein the control function unit includes a lens unit formed in a portion corresponding to a directivity range of the sensor in the translucent panel.   The control function unit is made of a dielectric material having a dielectric constant different from that of the translucent panel, and is configured by a dielectric layer disposed in a portion corresponding to the directivity range of the sensor in the translucent panel. The lighting fixture according to claim 1.   The lighting device according to claim 3, wherein the dielectric layer is made of a translucent dielectric.   The lighting fixture according to claim 3 or 4, wherein the directivity of the sensor is adjusted by changing a thickness dimension of the dielectric layer in an illumination direction of the light source.   The lighting apparatus according to claim 1, wherein the control function unit is provided on at least one surface of the translucent panel in an illumination direction of the light source.   The said control function part is provided in the whole of the said translucent panel in the illumination direction of the said light source, The lighting fixture of any one of Claims 1-5 characterized by the above-mentioned.   A lighting system comprising a plurality of lighting fixtures according to claim 1.

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