JP2016126973A - Luminaire and monitoring system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a luminaire whose constitution is not complex, and which can illuminate so that a face of a person who is looking down can be clearly photographed by a monitoring camera, in the outdoors at night time.SOLUTION: A luminaire 10 includes: a support column 12 installed on an installation surface 50; and a lighting fixture 11 fixed at the support column 12 and for emitting illumination light. The support column 12 includes an optical deflection member 13 at least in one part of a region from the installation surface 50 up to the height at which the lighting fixture 11 is fixed, out of the surface of the support column 12. The optical deflection member 13 receives incident light 111 contained in the illumination light, and emits emission light 112 in a direction different from a propagation direction of the incident light 111. In a state where the luminaire 10 is installed, an angle formed by the propagation direction of the emission light 112 and the horizontal direction is smaller than an angle formed by the propagation direction of the incident light 111 and the horizontal direction.SELECTED DRAWING: Figure 1

Description

  The present invention mainly relates to a lighting device and a monitoring system installed outdoors.

  Surveillance devices such as surveillance cameras installed on streets and parks for crime prevention purposes are known. In addition, an emergency call system in which an illumination lamp, a monitoring camera, and an emergency call system are integrated has been proposed (Patent Document 1).

JP 2003-317176 A

  In the emergency call system described in Patent Document 1, the surroundings can be illuminated with an illumination lamp.

  However, at night outdoors, even if a lighting device such as an illumination lamp is installed, there may be a case where sufficient illuminance for camera photography cannot be obtained. In particular, when photographing the face of a person who has struck, when illuminating from a high place like the illuminating lamp described in Patent Document 1, since the face becomes a shadow, the camera image may become unclear. In order to solve the above problem, for example, a measure such as separately providing a lighting fixture for photographing other than the illumination lamp can be considered. However, such a measure makes the apparatus complicated. In addition, a pedestrian may feel dazzled by providing a lighting device for photographing.

  The present invention has been made in view of the above circumstances, and can be illuminated so that the configuration of the present invention is not complicated and the face of a person who has struck can be photographed more clearly with a surveillance camera outdoors at night. An object is to provide a lighting device and a monitoring system.

  In order to achieve the above object, one aspect of an illuminating device according to the present invention is an illuminating device, a support column installed on an installation surface, and a luminaire that is fixed to the support column and emits illumination light. The support column includes a light deflection member in at least a part of a region from the installation surface to a height at which the lighting fixture is fixed, on the surface of the support column, and the light deflection member is incident on the illumination light. When light is received, the outgoing light is emitted in a direction different from the propagation direction of the incident light, and the illumination device is installed, the angle between the propagation direction of the outgoing light and the horizontal direction is horizontal to the propagation direction of the incident light. It is smaller than the angle made with the direction.

  According to the present invention, it is possible to provide an illuminating device and a monitoring system that can illuminate so that the face of a person who has struck can be photographed more clearly with a monitoring device outdoors at night. it can.

FIG. 1 is an external view of a monitoring system according to the first embodiment. FIG. 2A is a schematic diagram illustrating an example of an optical path of incident light and outgoing light within a cross section of the light deflection member according to the first embodiment. FIG. 2B is a schematic diagram showing another example of the optical paths of incident light and outgoing light in the cross section of the light deflection member according to Embodiment 1. FIG. 3 is a schematic cross-sectional view showing an example of a light deflection member having a prism structure on the surface. FIG. 4 is a schematic cross-sectional view showing an example of a light deflection member having a structure in which a plurality of spherical beads are arranged on the surface. FIG. 5 is a graph showing spectral sensitivity characteristics of a CMOS sensor which is an example of the image sensor according to the first embodiment. FIG. 6 is a graph showing an example of a spectral distribution of an LED light source that can be used as a light source of the illumination device according to the first embodiment. FIG. 7 is an external view of a monitoring system according to the second embodiment. FIG. 8 is a front view showing a schematic configuration of the first example of the light source according to the second embodiment. FIG. 9 is a front view showing a schematic configuration of a second example of the light source according to the second embodiment. FIG. 10 is a side view showing a schematic configuration of a third example of the light source according to the second embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Each of the embodiments described below shows a preferred specific example of the present invention. Therefore, the numerical values, shapes, materials, components, component arrangement positions, connection forms, and the like shown in the following embodiments are merely examples, and are not intended to limit the present invention. Therefore, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims showing the highest concept of the present invention are described as optional constituent elements.

  Each figure is a schematic diagram and is not necessarily illustrated strictly. Moreover, in each figure, the same code | symbol is attached | subjected to the substantially same structure, The overlapping description is abbreviate | omitted or simplified.

(Embodiment 1)
Hereinafter, the illumination device according to Embodiment 1 and a monitoring system using the same will be described.

[1-1. Constitution]
First, the configuration of a lighting device according to Embodiment 1 and a monitoring system using the lighting device will be described with reference to the drawings.

  FIG. 1 is an external view of a monitoring system 1 according to the present embodiment.

  The monitoring system 1 is a system installed mainly outdoors, and monitors a predetermined area outside.

  As shown in FIG. 1, the monitoring system 1 includes a lighting device 10 and a monitoring camera 20.

  The monitoring camera 20 is a camera that photographs the vicinity of the lighting device 10. In addition, the surveillance camera 20 captures an area illuminated by the illumination device 10 at night. Moreover, the monitoring camera 20 is installed on the wall surface etc. of the building 60, for example, as FIG. 1 shows. The monitoring camera 20 may be installed in the lighting device 10.

  The lighting device 10 is a lighting device mainly installed outdoors, and includes a lighting fixture 11 and a support column 12.

  The lighting device 11 is a device that is fixed to the support column 12 and emits illumination light. The lighting fixture 11 is fixed near the tip of the support column 12 and illuminates downward. The luminaire 11 includes a light source including, for example, an LED (Light Emitting Diode). Moreover, the lighting fixture 11 may be provided with optical systems, such as a lens for adjusting the light distribution of the light radiate | emitted from the light source, and a reflecting plate. Moreover, in FIG. 1, although the lighting fixture 11 is provided in the position projected on the one side from the support pillar 12, the several lighting fixture 11 may be provided in several directions. Moreover, the lighting fixture 11 may be provided immediately above the support pillar 12.

  The support column 12 is a columnar member installed on the installation surface 50 and supports the lighting fixture 11. The support column 12 is made of, for example, metal. Moreover, the cross section of the support pillar 12 may be arbitrary shapes, such as circular and a rectangle, for example. Further, the support column 12 includes the light deflection member 13 in at least a part of a region from the installation surface 50 to a height at which the lighting fixture 11 is fixed, on the surface of the support column 12.

  The light deflection member 13 is an optical member that receives the incident light 111 included in the illumination light emitted from the lighting fixture 11 and emits the emitted light 112 in a direction different from the propagation direction of the incident light 111. In addition, in the state where the illumination device 10 is installed, the angle formed by the propagation direction of the emitted light 112 and the horizontal direction is smaller than the angle formed by the propagation direction of the incident light 111 and the horizontal direction. That is, a part of the illumination light propagating in the direction close to the downward direction in the vertical direction is deflected in the direction close to the horizontal direction. As a result, the face of the whispered person can be illuminated, so that the face of the whispered person can be photographed more clearly by the monitoring camera 20. The light deflection member 13 is, for example, a sheet-like member, and is fixed to the surface of the support column 12. Further, the light deflection member 13 may be formed integrally with the support column 12. The light deflection member 13 may be provided on the entire circumference of the support column 12 or may be provided on a part of the periphery. For example, when the lighting device 10 is installed along a sidewalk, the light deflection member 13 may be provided only on the side of the support pillar 12 on the sidewalk.

  Here, the light deflection member 13 will be described with reference to the drawings.

  FIG. 2A is a schematic diagram illustrating an example of the optical paths of the incident light 111 and the emitted light 112 in the cross section of the light deflection member 13 according to the present embodiment.

  FIG. 2B is a schematic diagram illustrating another example of the optical paths of the incident light 111 and the emitted light 112 in the cross section of the light deflection member 13 according to the present embodiment.

  As shown in FIGS. 2A and 2B, the light deflection member 13 receives the incident light 111 and emits outgoing light 112 obtained by deflecting the incident light 111. Here, the angles β1 and β2 formed by the propagation direction of the outgoing light 112 and the horizontal direction (the direction of the one-dot chain line in FIGS. 2A and 2B) are based on the angles α1 and α2 formed by the propagation direction of the incident light 111 and the horizontal direction. Each is small.

  2A and 2B, the emitted light 112 may be upward in the vertical direction (see FIG. 2A) or downward in the vertical direction (see FIG. 2B).

  Next, a specific configuration of the light deflection member 13 described above will be described with reference to the drawings.

  FIG. 3 is a schematic cross-sectional view showing an example of a light deflection member 13A having a prism structure 131 on the surface.

  FIG. 4 is a schematic cross-sectional view showing an example of the light deflection member 13B having a structure in which a plurality of spherical beads 132 are arranged on the surface.

  3 and 4 also show an outline of the optical paths of the incident light 111 and the outgoing light 112. FIG.

  As shown in FIG. 3, the light deflection member 13 </ b> A includes a prism structure 131 and a reflection surface 133. The prism structure 131 is made of a transparent member such as acrylic. Moreover, the reflective surface 133 is comprised from a metal vapor deposition film etc., for example.

  As shown in FIG. 4, the light deflection member 13 </ b> B includes a plurality of spherical beads 132 and a reflecting surface 134. The spherical beads 132 are made of a transparent member such as acrylic. Moreover, the reflective surface 134 is comprised from a metal vapor deposition film etc., for example.

  Since the light deflection members 13A and 13B have the above-described configuration, as shown in FIGS. 3 and 4, the incident light 111 is refracted and reflected by the light deflection members 13A and 13B. Therefore, the angle formed between the propagation direction of the emitted light 112 and the horizontal direction can be made smaller than the angle formed between the propagation direction of the incident light 111 and the horizontal direction. Further, the propagation direction of the outgoing light 112 may be in the horizontal direction and the periphery in the horizontal direction. Here, the periphery in the horizontal direction means that the angle formed with the horizontal direction is within 30 degrees.

  Note that the angle formed by the propagation direction of all the emitted light 112 emitted from the light deflecting member 13 and the horizontal direction need not be smaller than the angle formed by the propagation direction of the incident light 111 and the horizontal direction. That is, the angle formed by the propagation direction of at least a part of the outgoing light 112 and the horizontal direction may be smaller than the angle formed by the propagation direction of the incident light 111 and the horizontal direction.

  Further, in order to irradiate the human face with the emitted light 112 emitted from the light deflecting member 13, an area of the surface of the support column 12 having a height from the installation surface 50 of 0.5 m or more and 2.0 m or less. The light deflection member 13 may be provided on at least a part of these. Furthermore, it is preferable that the light deflection member 13 is provided over the entire surface of the support column 12 in a region where the height from the installation surface 50 is 1.0 m or more and 2.0 m or less.

  The light deflecting member 13 may be composed of a light diffusing member. For example, the light diffusing member may be composed of a layer in which highly reflective particles are dispersed on the surface. When the light deflection member 13 is composed of a light diffusion member, the propagation direction of the emitted light 112 is diffused in a wide range including the horizontal direction and the periphery in the horizontal direction. Thereby, at least a part of the emitted light 112 is irradiated near the human face.

[1-2. Spectral distribution of incident light]
Next, the spectral distribution of the incident light 111 incident on the light deflection member 13 will be described.

  In the present embodiment, in order to make the photographing by the monitoring camera 20 clearer, it is intended to irradiate the human face with the emitted light 112. Therefore, in order to make the photographing with the monitoring camera 20 clearer, it is better that the sensitivity of the imaging device mounted on the monitoring camera 20 with respect to the emitted light 112 is high. Here, spectral sensitivity characteristics of a CMOS (Complementary Metal-Oxide Semiconductor) sensor, which is an example of a commonly used image sensor, will be described with reference to the drawings.

  FIG. 5 is a graph showing the spectral sensitivity characteristics of a CMOS sensor which is an example of the image sensor according to the present embodiment.

  As shown in FIG. 5, the CMOS sensor has high sensitivity on the short wavelength side (peak wavelength of about 500 nm) of visible light. For this reason, when the surveillance camera 20 captures an imaging target irradiated with light containing a relatively large amount of relatively short wavelength components (particularly, wavelengths of 450 nm or more and 550 nm or less), the obtained image becomes bright overall and clear. improves. Note that the spectral sensitivity characteristics of a CCD (Charge-Coupled Device) sensor, which is another example of an image sensor that is generally used, are also the same as the spectral sensitivity characteristics shown in FIG.

  Therefore, in order to capture a clearer image with the monitoring camera 20, the illumination light including the incident light 111 may have a spectral distribution including a large amount of light in the wavelength region of 450 nm or more and 550 nm or less. Here, an example of an LED light source having such a spectral distribution will be described with reference to the drawings.

  FIG. 6 is a graph showing an example of a spectral distribution of an LED light source that can be used as a light source of the illumination device 10 according to the present embodiment.

  As shown in FIG. 6, the spectral distribution of the LED light source has a peak around a wavelength of 450 nm. Further, the light emitted from the LED light source may include a component having a wavelength of 450 nm or more and 550 nm or less in an energy ratio of 55% or more in its spectral distribution. According to this, the sensitivity of the CMOS sensor is improved by about 10% as compared with the case of using a general white LED light source having a color temperature of about 5000 K (average color rendering index is about 70).

[1-3. Effect etc.]
As described above, the lighting device 10 according to the present embodiment includes the support column 12 installed on the installation surface 50 and the lighting fixture 11 that is fixed to the support column 12 and emits illumination light. The column 12 includes the light deflection member 13 in at least a part of the surface of the support column 12 from the installation surface 50 to a height at which the lighting fixture 11 is fixed. The light deflection member 13 is included in the illumination light. In response to the incident light 111, the outgoing light 112 is emitted in a direction different from the propagation direction of the incident light 111, and the angle between the propagation direction of the outgoing light 112 and the horizontal direction in the state where the illumination device 10 is installed is It is smaller than the angle formed by the propagation direction of the light 111 and the horizontal direction.

  In this way, the incident light 111 that is a part of the illumination light propagating in the direction close to the downward direction in the vertical direction is deflected in a direction close to the horizontal direction. As a result, the face of the whispered person can be illuminated, so that the face of the whispered person can be photographed more clearly by the monitoring camera 20.

  Moreover, in the illuminating device 10 which concerns on this Embodiment, the incident light 111 contains 55% or more of components with a wavelength of 450 nm or more and 550 nm or less in the spectral distribution.

  As a result, the sensitivity of the monitoring camera 20 can be improved when photographing with the monitoring camera 20 including a general imaging device having a peak in the vicinity of a wavelength of 500 nm in the spectral sensitivity characteristic. Shooting is possible.

  Moreover, in the illuminating device 10 which concerns on this Embodiment, the light deflection | deviation member 13 may be provided with the prism structure 131 on the surface.

  In the illumination device 10 according to the present embodiment, the light deflection member 13 may have a structure in which a plurality of spherical beads 132 are arranged on the surface.

  Moreover, in the illuminating device 10 which concerns on this Embodiment, the light deflection | deviation member 13 may be comprised from a light-diffusion member.

  Moreover, in the illuminating device 10 which concerns on this Embodiment, the support pillar 12 is at least one part of the area | region where the height from the installation surface 50 is 0.5 m or more and 2.0 m or less among the surfaces of the support pillar 12. An optical deflection member 13 is provided.

  Thereby, the emitted light 112 can be irradiated near the human face.

  Moreover, in the illuminating device 10 which concerns on this Embodiment, the light deflection | deviation member 13 may radiate | emit the emitted light 112 to a horizontal direction or a horizontal direction periphery.

  In addition, the monitoring system 1 according to the present embodiment includes a lighting device 10 and a monitoring camera 20.

  In the monitoring system 1, as described above, the incident light 111 that is a part of the illumination light propagating in the direction close to the downward direction in the vertical direction is deflected in the direction close to the horizontal direction. As a result, the face of the whispered person can be illuminated, so that the face of the whispered person can be photographed more clearly by the monitoring camera 20.

(Embodiment 2)
Next, a lighting apparatus according to Embodiment 2 and a monitoring system using the same will be described with reference to the drawings. The lighting device and the monitoring system using the lighting device according to the present embodiment make it possible not only to capture a clear image by the monitoring camera but also to freely select the atmosphere of the lighting environment.

[2-1. Constitution]
First, the structure of the illuminating device concerning this Embodiment and the monitoring system using the same is demonstrated using drawing. Below, it demonstrates centering on difference with the said Embodiment 1, and abbreviate | omits description about a common point.

  FIG. 7 is an external view of the monitoring system 1A according to the present embodiment.

  As shown in FIG. 7, the monitoring system 1 </ b> A according to the present embodiment includes a lighting device 10 </ b> A and a monitoring camera 20.

  The lighting device 10A mainly includes a lighting fixture 11A and a support column 12.

  The lighting fixture 11A is a fixture that emits illumination light, similarly to the lighting fixture 11 according to the first embodiment. However, 11 A of lighting fixtures differ in the structure of illumination light from the lighting fixture 11 which concerns on the said Embodiment 1. FIG. In the lighting fixture 11A according to the present embodiment, as shown in FIG. 7, a part of the illumination light is not incident on the light deflection member 13, and the incident light 111 is incident on the light deflection member 13. Have different spectral distributions. In the present embodiment, the illumination light is composed of the first illumination light 121 including the incident light 111 incident on the light deflection member 13 and the second illumination light 122 having a spectral distribution different from that of the first illumination light 121. .

  The first illumination light 121 is light including a lot of light in a wavelength region where the sensitivity of the image sensor mounted on the monitoring camera 20 is high. In the present embodiment, similarly to the illumination light of the luminaire 11 according to the first embodiment, it may have a spectral distribution including a lot of light in the wavelength region of wavelength 450 nm or more and 550 nm or less. In this case, the incident light 111 included in the first illumination light 121 includes a large amount of light in a wavelength region where the sensitivity of the image sensor is high. Since the emitted light 112, which is light obtained by deflecting the incident light 111 by the light deflecting member 13, is irradiated to a person or the like who is the subject of photography, a clearer image can be taken by the monitoring camera 20.

  The second illumination light 122 is light that illuminates the surrounding space of the illumination device 10A, and is used to obtain a desired atmosphere in the illumination environment. Here, the atmosphere in the illumination environment is determined by the spectral distribution of the illumination light. As described above, in the present embodiment, the first illumination light 121 is a pale shade of illumination light that contains a lot of light having a relatively short wavelength, and therefore the space illuminated by the first illumination light 121 is compared. A chilly atmosphere. Therefore, in the present embodiment, as the second illumination light 122, for example, reddish illumination light including a relatively long wavelength light having a color temperature of about 3000K is used. Thereby, the illumination environment in the periphery of 10 A of illuminating devices can be made into a warm atmosphere. Note that an arbitrary space around the illumination device 10A can be selected as the space irradiated with the second illumination light 122. For example, the second illumination light 122 may be applied to a region where the first illumination light 121 is applied.

  Next, the lighting fixture 11A that emits the first illumination light 121 and the second illumination light 122 will be described.

  11 A of lighting fixtures are equipped with the light source which radiate | emits the 1st illumination light 121 and the 2nd illumination light 122 inside. A structural example of the light source will be described with reference to the drawings.

  FIG. 8 is a front view showing a schematic configuration of the first example of the light source according to the present embodiment. FIG. 8 shows a light emitting side surface of the light source 15A.

  FIG. 9 is a front view showing a schematic configuration of a second example of the light source according to the present embodiment. FIG. 9 shows a surface on the light emission side of the light source 15B.

  FIG. 10 is a side view showing a schematic configuration of a third example of the light source according to the present embodiment.

  As shown in FIG. 8, the light source 15A includes a base 150A, a first light source 151A, and a second light source 152A.

  The first light source 151 </ b> A is a light source that emits the first illumination light 121. The first light source 151A is a light emitting module including, for example, a substrate, a plurality of LEDs that are bare chips (LED chips) mounted on the substrate, and a sealing member that seals the LEDs and includes a phosphor. May be. The substrate is a mounting substrate for mounting a plurality of LEDs, and is, for example, a ceramic substrate, a resin substrate, an insulating-coated metal base substrate, or the like. Although not shown, the substrate is formed with a pair of electrode terminals (a positive electrode terminal and a negative electrode terminal) for receiving DC power for causing the LED to emit light from the outside. The first light source 151 </ b> A may be an LED chip that emits the first illumination light 121. Further, an optical system such as a lens for adjusting the light distribution of the first illumination light 121 may be provided on the light emission side of the first light source 151A.

  The second light source 152 </ b> A is a light source that emits the second illumination light 122. The second light source 152A may be a light emitting module similar to the first light source 151A. However, the second light source 152A is different from the first light source 151A in the spectral distribution of the emitted light. The second light source 152A may be an LED chip that emits the second illumination light 122. Further, an optical system such as a lens for adjusting the light distribution of the second illumination light 122 may be provided on the light emission side of the second light source 152A.

  The base 150A is a member on which the first light source 151A and the second light source 152A are provided. When the first light source 151A and the second light source 152A are light emitting modules, the base 150A is made of a material such as resin or metal, for example. Further, when the first light source 151A and the second light source 152A are LEDs (LED chips), the base 150A may be a mounting board for mounting the LEDs. For example, the base 150A may be a ceramic substrate, a resin substrate, an insulating-coated metal base substrate, or the like. Further, the shape of the base 150A may be appropriately determined according to the shape of the lighting fixture 11A. As the shape of the base 150A, for example, an arbitrary shape such as a circle, an ellipse, or a rectangle can be used.

  As shown in FIG. 9, the light source 15B includes a base 150B, a first light source 151B, and a second light source 152B.

  The first light source 151 </ b> B is a light source that emits the first illumination light 121. The first light source 151B is, for example, a light emitting module including a substrate, a plurality of LEDs mounted on the substrate, and a sealing member that seals the LEDs and includes a phosphor. An optical system such as a lens for adjusting the light distribution of the first illumination light 121 may be provided on the light emission side of the first light source 151B. In FIG. 9, the shape of the light emission surface of the first light source 151 </ b> B is circular, but any other shape can be appropriately selected.

  The second light source 152B is a light source that emits the second illumination light 122. The second light source 152B is, for example, a light emitting module including a substrate, a plurality of LEDs mounted on the substrate, and a sealing member that seals the LEDs and includes a phosphor. An optical system such as a lens for adjusting the light distribution of the second illumination light 122 may be provided on the light emission side of the second light source 152B. In FIG. 9, the shape of the light emission surface of the second light source 152B is an annular shape, but other shapes can be appropriately selected according to the shape of the first light source 151B.

  The base 150B is a member on which the first light source 151B and the second light source 152B are provided. The base 150B is made of a material such as resin or metal, for example. In FIG. 9, the shape of the light emission surface of the first light source 151 </ b> B is circular, but any other shape can be appropriately selected.

  As illustrated in FIG. 10, the light source 15C includes a base 150C, a first light source 151C, and a second light source 152C.

  The first light source 151 </ b> C is a light source that emits the first illumination light 121. The first light source 151C has the same configuration as the first light source 151A.

  The second light source 152 </ b> C is a light source that emits the second illumination light 122. The second light source 152C has the same configuration as the second light source 152A.

  The base 150C is a member on which the first light source 151B and the second light source 152B are provided. As shown in FIG. 10, the base 150 </ b> C includes a flat central surface 154 </ b> C and a peripheral surface 153 </ b> C that is inclined with respect to the central surface 154 </ b> C. A second light source 152C and a first light source 151C are provided on the peripheral surface 153C and the central surface 154C of the base 150C, respectively. Thereby, for example, the first illumination light 121 emitted from the first light source 151C is irradiated in the direction directly below the lighting fixture 11A, and the second illumination light 122 emitted from the second light source 152C is the first illumination light 121. Irradiated in a direction away from By providing the base 150C with the above configuration, the irradiation directions of the first illumination light 121 and the second illumination light 122 can be adjusted by the surface shape of the base 150C. In the example shown in FIG. 10, the shape of the base 150 </ b> C is a truncated cone, but if it includes a central surface 154 </ b> C and a peripheral surface 153 </ b> C inclined with respect to the central surface 154 </ b> C, the shape other than the truncated cone is used. It may be. Further, the center surface 154C is not necessarily flat. For example, it may be inclined at an angle smaller than the peripheral surface 153C or may be a curved surface.

  When the first light source 151C and the second light source 152C are light emitting modules, the base 150C is made of a material such as resin or metal, for example. When the first light source 151C and the second light source 152C are LEDs (LED chips), the base 150C may be a mounting board for mounting the LEDs. For example, the base 150C may be a ceramic substrate, a resin substrate, a metal base substrate with an insulating coating, or the like.

  The light sources 15 </ b> A, 15 </ b> B, and 15 </ b> C emit the illumination light that includes the first illumination light 121 at the center and the second illumination light 122 around the first illumination light 121 by having the above-described configuration. Therefore, by arranging the light source 15A, 15B, or 15C in the lighting fixture 11A so that the first illumination light 121 is applied to the light deflection member 13, the lighting fixture 11A having the above-described function can be realized. it can.

  In the light sources 15A, 15B, and 15C, a partition wall may be provided between each first light source and each second light source. Thereby, it can suppress that the 1st illumination light 121 and the 2nd illumination light 122 mix. You may comprise a partition wall from reflective members, such as an aluminum plate and a Teflon (trademark) board. Thereby, absorption of the light by a partition wall is suppressed and the utilization efficiency of the light from each light source can be improved.

[2-2. Effect etc.]
As described above, in the illumination device 10A according to the present embodiment, a part of the illumination light is not incident on the light deflection member 13 and has a spectral distribution different from that of the incident light 111 incident on the light deflection member 13. Have.

  Thereby, similarly to the illumination device 10 according to the first embodiment, the surveillance camera 20 can capture the face of the person who has struck more clearly. Further, in the illumination device 10A according to the present embodiment, light (second illumination light 122) having a spectral distribution different from that of the incident light 111 is used as at least part of the illumination light that is not incident on the light deflection member 13. By doing so, it becomes possible to freely select the atmosphere of the lighting environment.

(Variations, etc.)
As mentioned above, although the illuminating device which concerns on this invention was demonstrated based on each embodiment, this invention is not limited to said each embodiment.

  For example, in each of the above embodiments, an example in which an LED light source is used as the light source has been described, but any other light source can be used as the light source. For example, other solid light emitting elements such as organic EL elements may be used.

  Further, in each of the above-described embodiments, examples in which the light deflection member 13 has a configuration including the prism structure 131 on the surface are shown, but the configuration of the light deflection member 13 is not limited thereto. For example, the light deflection member 13 may have a configuration in which minute deflection mirrors are arranged.

  In each of the above-described embodiments, the light deflecting member 13 deflects light of all wavelength components included in the incident light 111. However, the light deflecting member 13 uses a wavelength filter or the like to obtain a predetermined wavelength. A configuration may be adopted in which only light in the wavelength band is deflected.

  In each of the above embodiments, a CMOS sensor, a CCD sensor, and the like are illustrated as the image sensor included in the monitoring camera 20, but other image sensors may be used. In addition, the spectral distribution of the incident light 111 may be set as appropriate according to the spectral sensitivity characteristics of the image sensor.

  Moreover, in the said Embodiment 2, although the example in which the 1st illumination light 121 and the 2nd illumination light 122 are contained in illumination light was shown, the structure of illumination light is not restricted to this. For example, the illumination light may include light having three or more different spectral distributions.

  In addition, a form obtained by making various modifications conceivable by those skilled in the art with respect to the embodiment, or realized by arbitrarily combining the components and functions in the embodiment or the modification without departing from the gist of the present invention. Forms to be made are also included in the present invention.

DESCRIPTION OF SYMBOLS 1, 1A Monitoring system 10, 10A Illuminating device 11, 11A Illuminating fixture 12 Support pillar 13, 13A, 13B Light deflection member 20 Monitoring camera 50 Installation surface 111 Incident light 112 Emitted light 131 Prism structure 132 Spherical beads

Claims (9)

A lighting device,
A support column installed on the installation surface;
A lighting fixture fixed to the support column and emitting illumination light, and
The support column includes a light deflection member in at least a part of a region of the surface of the support column from the installation surface to a height at which the lighting fixture is fixed,
The light deflection member receives incident light included in the illumination light, and emits outgoing light in a direction different from the propagation direction of the incident light,
In the state where the illumination device is installed, an angle formed by the propagation direction of the emitted light and the horizontal direction is smaller than an angle formed by the propagation direction of the incident light and the horizontal direction. The illumination device according to claim 1, wherein the incident light includes a component having a wavelength of 450 nm or more and 550 nm or less in an energy ratio of 55% or more in the spectral distribution. 3. The illumination device according to claim 1, wherein a part of the illumination light is not incident on the light deflection member and has a spectral distribution different from that of the incident light incident on the light deflection member. The lighting device according to claim 1, wherein the light deflection member includes a prism structure on a surface thereof. The lighting device according to claim 1, wherein the light deflection member has a structure in which a plurality of spherical beads are arranged on a surface. The illuminating device according to claim 1, wherein the light deflection member includes a light diffusion member. The said support pillar equips the surface of the said support pillar with the said optical deflection | deviation member in at least one part of the area | region whose height from the said installation surface is 0.5 m or more and 2.0 m or less. The lighting device according to claim 1. The lighting device according to claim 7, wherein the light deflection member emits the emitted light in a horizontal direction or in a horizontal direction periphery. The lighting device according to any one of claims 1 to 8,
A surveillance system comprising a surveillance camera.

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