JP7286916B2 - Lighting devices and lighting systems - Google Patents

Description

The present invention relates to lighting devices and lighting systems.

A lighting device is known that includes a camera capable of capturing an image of its surroundings. As such a lighting device, for example, a camera is provided in the center of the lighting device, and a plurality of LED elements are provided around the camera. Such a lighting device has a complicated structure, and there is a possibility that the light emitted from the LED element may be blocked by the camera and a dark portion may be generated in the irradiation area.

JP 2015-60832 A

A problem to be solved by the present invention is to provide an illumination device capable of imaging in a suitable range.

A lighting device according to an embodiment of the present invention includes a longitudinal main body, a lighting unit provided in the main body and installed in a place where the main body is installed and illuminating an irradiation area facing each other, and the main body. and a camera unit provided at one end in the longitudinal direction facing the irradiation area and provided as an imageable area in which an area having a predetermined illuminance or more in the irradiation area is provided as an imageable area, wherein the camera unit can image. The regions are the irradiation surface of the irradiation region having a predetermined illuminance or more corresponding to the length in the longitudinal direction of the main body, and the predetermined illuminance or more outside the main body in the longitudinal direction from both sides of the irradiation surface. When the lighting devices are arranged side by side in the longitudinal direction and are arranged side by side in the longitudinal direction , among the intersections of the imaging ranges of the camera units of the lighting devices , the area below the intersection near the installation surface has a predetermined illuminance. It is characterized by the above .

According to the illuminating device of the embodiment of the present invention, it is possible to provide an illuminating device capable of capturing an image in a suitable range.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows the example of the external appearance of the illuminating device which concerns on embodiment of this invention. It is a schematic diagram which shows the irradiation area and imaging range by the illuminating device which concerns on embodiment of this invention. It is a side view showing a part of lighting installation concerning an embodiment of the present invention. It is a block diagram showing typically an example of composition of an illuminating device concerning an embodiment of the present invention. FIG. 4 is a schematic diagram showing an irradiation region and an imaging range when a plurality of lighting devices according to the embodiment of the present invention are used in combination with other lighting devices. It is a schematic diagram which shows the imaging range in the case of using multiple illuminating devices which concern on embodiment of this invention. It is a schematic diagram which shows the imaging range in the case of using multiple illuminating devices which concern on embodiment of this invention.

A lighting device 100 according to an embodiment described below includes a lighting section 2 and a camera 17 in a longitudinal main body section 4 . The illumination unit 2 irradiates and illuminates the irradiation regions S1 to S3 facing the illumination unit 2 .

Of these, the irradiation region S1 is a region where, when the lighting device 100 is attached to the installation surface, the luminance is equal to or greater than a predetermined illuminance corresponding to the longitudinal length of the lighting device 100 as viewed from the side surface of the lighting device 100. be. The irradiation area S2 is an area having a predetermined illuminance or more, which is outside the lighting device 100 in the longitudinal direction from the other end in the longitudinal direction of the body portion 4, which will be described later. The irradiation area S3 is an area having a predetermined illuminance or more, which is outside in the longitudinal direction of the lighting device 100 from one end in the longitudinal direction of the main body 4, which will be described later.

The camera 17 is provided at one longitudinal end of the main body 4 . In addition, the camera 17 is provided in the body section 4 adjacent to the lighting section 2 so as to face the irradiation area S1. Further, the camera 17 is provided so as to be able to image the irradiation areas S1 to S3 having a predetermined illuminance or more.

Embodiments according to the present invention will be described below with reference to the drawings. It should be noted that the embodiments shown below do not limit the technology disclosed by the present invention. Also, in the embodiments, the same parts are denoted by the same reference numerals, and overlapping descriptions are omitted as appropriate.

FIG. 1 is a perspective view showing an appearance example of a lighting device according to an embodiment. FIG. 3 is a side view of the lighting device according to the embodiment. As shown in FIGS. 1 and 3 , the illumination device 100 has an illumination section 2 , a camera 17 , a main body section 4 and a light shielding cover 50 . The illumination device 100 is a ceiling-mounted illumination device in which the main body 4 is installed on the ceiling surface, and the light output from the illumination unit 2 is irradiated onto the floor surface, which is an example of the irradiation area S1. The lighting device 100 is mainly used indoors for purposes such as monitoring a production line in a factory and monitoring the status of employees in an office. The illumination unit 2 is an example of an illumination unit.

In order to make the explanation easier to understand, FIG. 1 shows a three-dimensional orthogonal coordinate system including the Z-axis, in which the vertically downward direction is the positive direction and the vertically upward direction is the negative direction. Also, the X-axis is shown along the longitudinal direction of the illumination device 100, and the Y-axis is along the short direction of the illumination device 100, respectively. Such an orthogonal coordinate system may also be shown in other drawings used in the description below.

The lighting unit 2 has a plurality of light emitting elements (not shown) arranged at predetermined intervals on a long chassis or substrate (not shown) arranged along the Y-axis direction. The light emitting bar is provided with a diffusion cover 20 on the floor surface side, that is, on the Z-axis negative direction side, so that the light emitting element is housed between them.

The diffusion cover 20 is made of, for example, translucent material such as acrylic or polycarbonate. The diffusion cover 20 is frosted and has a function of diffusing the light emitted from the plurality of light emitting elements. Note that the diffusion cover 20 may be appropriately mixed with a diffusion material or a coloring agent.

Further, as shown in FIG. 2, the illumination unit 2 is provided so as to illuminate predetermined irradiation regions S1 to S3 provided facing each other. The irradiation areas S1 to S3 include an irradiation surface such as a working surface and a space in the height direction thereof. The illumination unit 2 is provided so that the illumination areas S2 and S3, which are longitudinally outer than both longitudinal ends of the main body 4, can also be illuminated with a predetermined illuminance or higher. That is, the lighting device 100 can obtain the irradiation areas S1 to S3 which are irradiated with a predetermined illuminance or more over a distance longer than the length of the main body 4 in the longitudinal direction.

The camera 17 includes an imaging device such as a CCD (Charge Coupled Device) or a CMOS (Complementary Metal Oxide Semiconductor) that electronically acquires an image. The camera 17 has a lens 17a as shown in FIG. 3, and is arranged at one end in the longitudinal direction of the main body 4 so as to be adjacent to the illumination section 2 in the negative direction of the X axis so as to face the irradiation area S1. be done.

Further, the camera 17 is provided so as to be capable of imaging at least the irradiation regions S1 to S3 having a predetermined illuminance or more. The predetermined illuminance is, for example, the minimum illuminance of the work surface according to the work category defined by the Industrial Safety and Health Regulations. Further, the irradiation areas S1 to S3 that can be imaged by the camera 17 may have an illuminance equal to or higher than a predetermined illuminance by combining not only the illumination from the illumination unit 2 but also the illumination from other illumination devices and the illumination by natural light. .

As shown in FIG. 5, the camera 17 is provided so as to be capable of imaging an irradiation area within an angle inclined in the longitudinal direction of the main body 4 by a predetermined imaging angle θ1 from a line drawn vertically from the lens portion 17a, for example. The imaging angle θ1 is expressed by the following formula, where r is the distance from the irradiation region S1 to the lens portion 17a, and s1 and s2 are the lengths of the irradiation regions S1 and S2 in the longitudinal direction of the illumination device 100, respectively. provided within the range.

(Number 1)
r・tanθ1 > s1 + s2

(Number 2)
2r・tanθ1 > s1 + s2 + s3

That is, even if the camera 17 is integrally arranged in the lighting device 100 with the lighting unit 2 and the main body unit 4 arranged in the longitudinal direction, the camera 17 can image a range wider than the length of the lighting device 100 in the longitudinal direction.

For example, when lighting device 100 is installed on the ceiling of a room, even if one longitudinal end side of lighting device 100 where camera 17 is installed is installed in a direction near the wall, camera 17 will not be illuminated by lighting unit 2 in the room. It is possible to image up to an irradiation area S2 on the center side and with a predetermined illuminance or more and an irradiation area S3 on the room wall side and with a predetermined illuminance or more. Conversely, even if the one longitudinal end side of the lighting device 100 where the camera 17 is installed is located on the center side of the room, the camera 17 is positioned near the wall and has a predetermined illuminance or more, and the illumination area S2 is on the center side of the room and has a predetermined illuminance. Imaging is possible up to the irradiation region S3 described above.

As a result, regardless of the direction in which the lighting device 100 is installed in the installation location, the camera 17 can be seen in the outer range of the other end side opposite to the one end side of the lighting device 100 in which the camera 17 is installed. It is possible to cover up to a certain irradiation area S2 as an imaging range.

3, the lower end of the camera 17, that is, the end on the Z-axis negative direction side, is closer to the main body 4 than the lower end of the illumination unit 2, that is, the outer surface 20a of the diffusion cover 20, by a height h1. are placed in That is, the camera 17 has a longer distance to the irradiation area S1 than the illumination unit 2 by the height h1. By defining the arrangement of the cameras 17 in this way, the light emitted from the illumination unit 2 can illuminate the illumination areas S1 to S3 without being blocked by the cameras 17. FIG.

The body portion 4 holds the lighting portion 2 and the camera 17 . The body portion 4 also serves as an attachment member for attaching the lighting device 100 to a predetermined position such as the ceiling.

The light shielding cover 50 is disposed on the Z-axis negative direction side of the camera 17 so as to cover the camera 17 between itself and the main body 4 . As shown in FIG. 3 , the lower end 53a of the outer surface 53 of the light shielding cover is located farther from the main body 4 than the outer surface 20a of the diffusion cover 20, which is the lower end of the lighting section 2, by a height h2. That is, the lower end 53a of the light shielding cover 50 has a shorter distance to the irradiation area S1 than the illumination section 2 by the height h2. By providing such a light shielding cover 50 , of the side walls 51 and 52 arranged at both ends in the length direction of the light shielding cover 50 , the side wall 52 arranged on the side of the lighting unit 2 can It functions as a partition provided between That is, the illumination unit 2 irradiates the camera 17 side with light within an irradiation range L1 indicated by a dashed line in FIG. By arranging the light shielding cover 50 having such side walls 52, the light emitted from the diffusion cover 20 of the lighting section 2 becomes more difficult to enter the lens 17a of the camera 17, and the image picked up by the camera 17 becomes defective. can be reduced.

Also, the light shielding cover 50 has an opening 56 and an inclined portion 55 . The opening 56 is a through hole passing through the outer surface 53 and the inner surface 54 of the light shielding cover 50, and is provided at a position facing the lens 17a. The sloping portion 55 is provided so as to widen from the periphery of the opening 56 on the side of the outer surface 53 to the lower end 53a of the light shielding cover 50 on the side of the irradiation region S1. By providing the inclined portion 55 in this way, the camera 17 can take an image in the imageable range L2 indicated by the two-dot chain line in FIG. By disposing the light shielding cover 50 having the opening 56 and the inclined portion 55 as described above, it is possible to make it difficult for the light emitted from the diffusion cover 20 of the lighting section 2 to enter the lens 17a of the camera 17. It is possible to widen the imaging range of.

Next, the functional configuration of the lighting device 100 will be described with reference to FIG. 4 . FIG. 4 is a block diagram schematically showing an example of the configuration of the lighting device according to the embodiment;

As shown in FIG. 4 , the illumination device 100 includes a main body 4 , illumination section 2 , imaging unit 3 and recording slot 18 .

Main unit 4 includes power supply unit 11 , power storage unit 12 , and control unit 15 . The power supply unit 11 converts AC power supplied from the AC power supply 22 into DC power and outputs the DC power. The AC power supply 22 is, for example, a commercial power supply.

Further, the power supply unit 11 performs charge/discharge operation of the power storage unit 12 . The power storage unit 12 is, for example, a secondary battery such as a lithium ion battery. The power storage unit 12 of this embodiment is a battery module that can be attached to and detached from the inside of the main unit 4 . For example, when the power supply from the AC power supply 22 is interrupted due to a power failure, the power stored in the power storage unit 12 can be used to operate the lighting device 100 .

The control unit 15 is, for example, a processing device such as a microcomputer. The control unit 15 generates a control signal preset in the recording medium 21 inserted in the recording slot 18 or a storage unit (not shown), and outputs the control signal to the lighting control unit 13 and the imaging control unit 16, which will be described later.

The lighting unit 2 has a lighting control unit 13 and a light emitting element 14 . The lighting control unit 13 supplies direct current supplied from the power supply unit 11 to the plurality of light emitting elements 14 to control lighting of the light emitting elements 14 .

The light emitting elements 14 are connected to the lighting control section 13 by wiring patterns on the chassis, and are supplied with DC output from the lighting control section 13 and controlled to be lit by the lighting control section 13 . The light emitting element 14 includes, for example, an LED chip arranged in a main body made of ceramics, and translucent resin for molding, such as epoxy resin or silicone resin, which seals the LED chip.

The LED chip is, for example, a blue LED chip that emits blue light. The translucent resin is mixed with a phosphor, and in order to emit white light, a yellow phosphor that emits yellow light, which is complementary to blue light, is used. there is The LED chip may emit red light or green light, for example.

In addition, the LED may be mounted directly on the chassis or substrate of the illumination unit 2, or may be mounted with a bullet-shaped LED, and the mounting method and form are not particularly limited. not something.

The imaging unit 3 has an imaging control section 16 and a camera 17 . The imaging control unit 16 controls the imaging angle of the camera 17 . The imaging unit 3 is driven by receiving power supply from a power supply section 11 provided in the main body section 4 . Also, the imaging control unit 16 causes the recording medium 21 inserted into the recording slot 18 to record the image captured by the camera 17 . As the recording medium 21, for example, a non-volatile memory such as a memory card or memory stick can be used.

Next, with reference to FIGS. 5 to 7, a description will be given of a case in which a plurality of lighting devices other than the lighting device 100 and the camera 17 are installed and used. In FIG. 5, S4 is an irradiation area irradiated with a predetermined illuminance or more by another lighting device. Further, in FIG. 6, S7 is the imaging range of the camera 17 .

The illuminating device 100 may be arranged and used together with another illuminating device that does not have the camera 17 in an indoor space or the like in which a plurality of illuminating devices are installed on an installation location such as a ceiling surface for illumination. . In that case, the camera 17 captures not only the irradiation regions S1 to S3 irradiated by the lighting device 100, but also part or all of the irradiation region S4 irradiated by another lighting device arranged adjacent to the lighting device 100. It is provided so that imaging is possible.

At that time, when the irradiation regions S1 to S3 and the irradiation region S4 do not overlap, the surface between the irradiation regions S1 to S3 and the irradiation region S4 is called an irradiation region S6. When the irradiation area S6 has a predetermined illuminance or more due to the irradiation light from the lighting device 100, the irradiation light from another lighting device, or other light such as natural light, the camera 17 can capture part or all of the irradiation region S6. be provided.

As a result, when a plurality of other lighting devices and the lighting device 100 are installed in combination, the plurality of imageable ranges S7 are the irradiation regions S1 to S3 of the lighting device 100 and the irradiation regions S4 and irradiation by the other lighting devices adjacent to each other. The entire irradiation area S6, which is a plane between the areas S1 to S3 and the irradiation area S4, can be included in the imageable range S7.

Desirably, as shown in FIG. 6, the illuminating device 100 is positioned such that the imageable range S7 of the lighting device 100 is in contact with or partially overlaps with the imageable range S7 of another lighting device 100 disposed closest to itself. should be provided. As a result, when it is desired to newly provide an indoor imaging means, the illumination device 100 can be installed only in a necessary place, saving the user time and effort and cost.

For example, in an office where a plurality of lighting devices are installed on the ceiling and the minimum illuminance of the floor surface is 400 lx, when the predetermined illuminance of the irradiation regions S1 to S3 is 400 lx, the lighting device 100 has the irradiation regions S1 to S3 and The camera 17 can capture an image of the floor including the irradiation area S4 of another lighting device adjacent to the lighting device 100 . This eliminates the need to separately provide an illumination device and a camera when indoor illumination and imaging are required.

In addition, since the camera 17 is driven by being supplied with power from the power source section 11 provided in the main body section 4, the lighting device 100 can be driven simply by being connected to an existing ceiling lighting power source or the like. Therefore, it is possible to install the imaging means at the place where it is to be installed without newly performing wiring work for supplying power from the AC power supply 22 as in the case of installing a fixed imaging means such as a single surveillance camera. It has the effect of being efficient.

In addition, since the lighting device 100 is driven by being supplied with power from the power supply unit 11 that charges and discharges the power storage unit 12, even when the power supply from the AC power supply 22 is cut off due to a power failure or the like, the lighting unit can still operate. 2 is a predetermined illuminance (for example, an illuminance of 1 lx or more specified by the Building Standards Act for disaster prevention lighting devices such as emergency lights and guide lights) can illuminate the irradiation areas S1 to S3 and the camera 17 has an illuminance of a predetermined illuminance or more. It is possible to image the irradiation areas S1 to S3.

Further, even when the illumination device 100 and another illumination device without the camera 17 are provided together, the camera 17 is illuminated by the other adjacent illumination devices along with the illumination areas S1 to S3 illuminated by the illumination device 100. It is provided so as to be able to image an irradiation area S4 having an illuminance equal to or higher than a predetermined illuminance (for example, 400 lx). The ranges of S1 to S3 and S4 may partially or entirely overlap, or may not overlap. Therefore, when a plurality of lighting devices are installed, the imaging range of the camera 17 of the lighting device 100 only needs to cover the place in the office to be imaged, and the other lighting devices can be selected arbitrarily. can be installed. As a result, a minimum number of lighting devices 100 can be installed in the office, and the user's cost of purchasing and replacing lighting devices can be reduced.

It should be noted that the installation surfaces of the lighting device 100 and the other lighting devices need not be parallel to the irradiation regions S1 to S3. Further, the installation locations where the plurality of lighting devices 100 and other lighting devices are installed may not be one plane but may be, for example, a ceiling surface having planes with different heights. Next, a lighting system using a plurality of lighting devices 100 according to an embodiment of the present invention will be described with reference to FIG. The lighting device 100 used in the lighting system according to the embodiment of the present invention includes communication means connectable to an external network or the like instead of the recording slot 18 and the recording medium 21 .

An image captured by the camera 17 is transmitted to an external server or the like by communication means and recorded. Also, a plurality of images captured by a plurality of cameras 17 are synthesized into one synthesized image by image synthesizing means. This synthesized image is provided so as to be output by output means connected to the same external server or the like.

Further, as shown in FIG. 7, a plurality of cameras 17 provided in a plurality of lighting devices 100 are provided so as to be capable of imaging imaging ranges A1 to An each having a predetermined illuminance or more. When there is an obstacle O such as a person or an object in a room where a plurality of lighting devices 100 are installed, a blind spot B1 of the imaging range A1 and a blind spot B3 of the imaging range A3 that cannot be captured by a single camera 17 are generated.

In such a case, as shown in FIG. 7, by arranging a plurality of lighting devices 100 so that the imaging ranges A1 to An of the cameras 17 overlap each other, for example, the blind spot B1 of the imaging range A1 can be blocked by another lighting device 100. The imaging ranges A2 and A3 of the provided cameras 17 are overlapped, and the blind spot B3 in the imaging range A3 of the other camera 17 overlaps the imaging range A1 of the camera 17, so that imaging without blind spots is possible. In addition, even if the blind spot B1 becomes a shadow of the obstacle O with illumination from one illumination device 100, by providing another illumination device 100 capable of illuminating the blind spot B1, the blind spot B1 is illuminated with a predetermined illuminance or more. be done. As a result, the blind spot range B1 can be imaged by the lighting system according to the embodiment of the present invention.

In addition, the images captured by each of the plurality of cameras 17 capable of imaging the imaging ranges A1 to A3 are transmitted to the external network, and the blind spot B1 is captured in the synthesized image synthesized by the image synthesizing means.

In addition, the lighting system is not a composite image of a plurality of images captured by a plurality of cameras 17, but is simply captured by one of the plurality of cameras 17, and is transmitted from an external terminal connected to the network to the blind spot B1 or B3. The configuration may be such that the captured images can be checked individually.

Similarly, a blind spot B3 that is not imaged by the imaging range A3 when there is an obstacle O overlaps with the imaging range A1 of the camera 17 provided in another illumination device 100 that captures a range different from the imaging range A3. As a result, the blind spot B3 is imaged in the synthesized image synthesized by the image synthesizing means.

By providing a plurality of lighting devices 100 as described above so that the imaging range of each camera 17 overlaps with the imaging range of another camera 17, an image with few blind spots can be obtained in a room or the like where a plurality of lighting devices 100 are provided. Obtainable.

Further, when a plurality of lighting devices 100 are provided so that the imaging ranges A1 to An of the respective cameras 17 overlap each other, the respective imaging ranges A1 to An have a predetermined height T (for example, 160 cm, which is about the height of a person) or more. are provided so as to overlap each other at the height of As shown in FIG. 7, the predetermined height T is the image pickup range in the height direction, with the installation surface of the lighting device 100 facing upward and the direction of the image pickup ranges A1 to An facing the plurality of camera units 17 downward. This is the lowest height of the blind spots B0 of A1 to An. As a result, a lighting system in which a plurality of lighting devices 100 are installed can capture an imaging range at a height equal to or lower than the predetermined height T, and can obtain a composite image with fewer blind spots in the height direction.

Further, even in the illumination device 100 in which the camera 17 is arranged side by side with the elongated illumination section 2 as in the above embodiment, the imaging range of the camera 17 can be set as in each of the examples. 17 can be adjusted. This makes it possible to construct a system in which the lighting device 100 and another lighting device that does not have a camera 17 coexist depending on the application, and it is easy to construct a system that does not create a desired blind spot in the height direction. This makes it possible to increase the degree of freedom in lighting design and imaging area design.

In the above-described embodiment, the case where the plurality of lighting devices 100 are arranged in the longitudinal direction of the lighting device 100 has been described. may be

Further, in the above-described embodiment, the illumination device 100 is described as a ceiling-mounted type illumination device. , for example, may be mounted on a wall. Furthermore, even when a plurality of lighting devices 100 are provided and a plurality of images are to be obtained, the lighting devices 100 or the cameras 17 are not necessarily connected to the network. As long as each individual image information can be obtained, the combining method and the method of obtaining a plurality of images are not particularly limited.

While embodiments of the invention have been described, the embodiments have been presented by way of example and are not intended to limit the scope of the invention. This embodiment can be implemented in various other forms, and various omissions, replacements, and modifications can be made without departing from the scope of the invention. These embodiments and their modifications are included in the scope and spirit of the invention, as well as the scope of the invention described in the claims and equivalents thereof.

100 Lighting device 2 Lighting unit 4 Main unit 17 Camera 20 Diffusion cover 50 Light shielding cover

Claims (1)

an elongate body;
a lighting unit provided in the main body and installed in a place where the main body is installed to illuminate an irradiation area facing the main body;
a camera unit provided at one end in the longitudinal direction of the main body so as to face the irradiation region and provided as an imageable region in which an area having a predetermined illuminance or more in the irradiation region;
A lighting device comprising
The imageable area of the camera unit is an irradiation surface of an irradiation area having a predetermined illuminance or more corresponding to the length of the main body in the longitudinal direction, and longitudinally outer sides of the irradiation surface from both sides of the irradiation surface. Along with being an irradiation surface of an irradiation area having a predetermined illuminance or more,
When the lighting devices are arranged side by side in the longitudinal direction, among the intersections of the image capturing ranges of the camera units of the adjacent lighting devices , a portion below the intersection near the installation surface has a predetermined illuminance or more. lighting device.

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