JP7623901B2 - Lighting equipment - Google Patents

Description

An embodiment of the present invention relates to a lighting device equipped with a camera unit.

Conventionally, lighting devices equipped with a camera unit are known. In this lighting device, a communication cable capable of supplying power is connected, and the camera unit operates using the power supplied through this communication cable, and data captured by the camera unit is transmitted via the communication cable.

In such camera units, the power supplied by the communication cable needs to be converted into a specific power for the camera unit to operate, which creates the problem of heat generation due to the power conversion, causing the temperature of the imaging section of the camera unit to rise and increasing noise, which can lead to a decrease in image quality.

JP 2020-119666 A

The problem that this invention aims to solve is to provide a lighting device that can suppress temperature rise in the imaging section.

The lighting device of the embodiment includes a lighting fixture that emits light and a camera unit. The camera unit has a camera body that houses an imaging section arranged on a light irradiation side corresponding to the light irradiation direction of the lighting fixture, an imaging board arranged on the light irradiation side and on which the imaging section is provided, a communication board arranged on a non-light irradiation side opposite to the light irradiation side on which the imaging board is arranged, and a connector arranged on the communication board and connected to a communication cable that can supply direct current power wired from the lighting fixture side . At least the communication board of the camera unit operates by the direct current power supplied through the communication cable connected to the connector, and the camera unit communicates through the communication cable.

The lighting device of the embodiment can suppress temperature rise in the imaging unit.

1 is a perspective view of an illumination device showing an embodiment. FIG. 2 is a perspective view of the lighting device with a light source unit removed. FIG. 2 is an exploded perspective view of a camera unit of the illumination device. FIG. FIG. 2 is a perspective view of the camera body of the camera unit as viewed from the non-illuminated side. FIG. 2 is a perspective view of the camera body of the camera unit as viewed from the light emitting side. FIG. 2 is an exploded perspective view of the optical system of the camera unit.

An embodiment will be described below with reference to the drawings.

The lighting device 10 is shown in Figures 1 and 2. The lighting device 10 is a surface-mounted lighting device that is installed on an installation surface, such as a ceiling surface. The lighting device 10 comprises a long lighting fixture 11 and a camera unit 12 that is arranged on one end side of the lighting fixture 11 in the longitudinal direction. The lighting device 10 provides illumination using the lighting fixture 11, captures an image of a predetermined shooting area including the illuminated area using the camera unit 12, and transmits the captured data to an external storage device or cloud, allowing the data to be stored and viewed.

The lighting fixture 11 is a long, base light type with a light-emitting area that is continuous along the longitudinal direction. The lighting fixture 11 comprises a fixture body 15 whose upper, or rear, side is attached to the ceiling surface, and a light source unit 16 that is detachably attached to the lower, or front, side of the fixture body 15. The front side of the lighting fixture 11 is the light irradiation side that corresponds to the light irradiation direction in which light is irradiated from the light source unit 16, and the rear side is the non-light irradiation side opposite the light irradiation side.

The device body 15 is made of, for example, sheet metal and is formed long. The device body 15 has a top plate portion 19, which is a long installation portion, side plate portions 20 provided on both sides in the width direction, which is the short direction that intersects with the longitudinal direction of the top plate portion 19, and end plate portions 21 provided on both ends in the longitudinal direction of the top plate portion 19, and is formed in a long, narrow box shape with an open front side.

The top plate portion 19 is provided with a plurality of holes. A first wiring hole 22 for a power line is provided in the longitudinal center of the top plate portion 19, and a second wiring hole 23 for a communication cable is provided near both longitudinal ends of the top plate portion 19. A plurality of mounting holes 24 for mounting to an installation surface, including a long hole or a daruma hole that is long in the longitudinal direction of the top plate portion 19, are provided near both longitudinal ends of the top plate portion 19. In addition, as shown in FIG. 3, a communication hole 25 for communicating between the inside of the device main body 15 and the camera unit 12 side is provided in the center of the width direction of the end plate portion 21 on one end side, and an insertion hole 26 for mounting the cover of the camera unit 12 is provided on one side of the width direction of the end plate portion 21 on one end side. The communication hole 25 may be a knockout hole for a feed wiring when connecting the lighting device 11.

As shown in FIG. 2, within the fixture body 15, a terminal block 27 is disposed near one end of the first wiring hole 22 in the center of the top plate 19, a first power supply unit 28 for lighting the light source unit 16 is disposed near the other end opposite the terminal block 27 with respect to the first wiring hole 22 in the center of the top plate 19, and a second power supply unit 29 for driving the camera unit 12 is disposed on the one end side of the terminal block 27 on the top plate 19.

The terminal block 27 is electrically connected to a power supply line that is pulled into the fixture body 15 from the outside through the first wiring hole 22 during installation. The terminal block 27 is electrically connected to the first power supply unit 28 and the second power supply unit 29 by internal wiring. The power supply line supplies AC power, which is external power from a commercial AC power source, to the lighting device 10.

The first power supply unit 28 is, for example, an AD-DC converter, and converts AC power supplied from a commercial AC power source through the terminal block 27 into DC power, which is the lighting power required to light the light source unit 16, and supplies it to the light source unit 16. A first output line that is electrically connected to the light source unit 16 is connected to the first power supply unit 28.

The second power supply unit 29 is, for example, an AD-DC converter, and converts AC power supplied from a commercial AC power source through the terminal block 27 into DC power, which is the operating power required for at least a portion of the operation of the camera unit 12, and supplies it to the camera unit 12. A second output line that is electrically connected to the camera unit 12 is connected to the second power supply unit 29.

Inside the fixture body 15, spring receiving fittings 30 are attached near both ends of the top plate 19 as mounting parts that constitute an attachment mechanism for removably attaching the light source unit 16 to the fixture body 15.

As shown in Figs. 1 and 2, the light source unit 16 is long and is formed to have approximately the same length as the length of the fixture body 15. The light source unit 16 includes a light source chassis 33, a light source 34 attached to the underside of the light source chassis 33, and a translucent cover 35 attached to the light source chassis 33 to cover the light source 34.

The light source chassis 33 is made of metal and is long. The light source 34 is composed of a light-emitting module having a long board and a plurality of light-emitting elements mounted along the longitudinal direction of the board. The light-emitting elements are composed of, for example, LEDs or organic EL. One end of an input line is electrically connected to the light source 34, and the other end of the input line is drawn out from the rear side of the light source chassis 33, and the other end of the input line is electrically connected to the first output line from the first power supply unit 28 by a detachable connector. The translucent cover 35 has translucency and light diffusion properties, and transmits light from the light source 34. The translucent cover 35 is formed so that the cross-sectional shape in the width direction is a convex curved surface on the front side.

Attachment springs 36 are attached to the rear side of the light source chassis 33 near both ends in the longitudinal direction as attachment parts that constitute the attachment mechanism. The attachment springs 36 are configured to raise the light source unit 16 by the spring force and attach it to the fixture body 15 by hooking them onto the spring receiving brackets 30 of the fixture body 15 in a state where they are raised from the light source chassis 33 against the spring force.

As shown in Figures 3 and 4, the camera unit 12 includes a camera housing 40 that is attached to one end of the lighting fixture 11, and a camera body 41 that is housed within the camera housing 40.

The camera housing 40 is elongated in a direction corresponding to the longitudinal direction of the lighting fixture 11, and is formed with an external appearance that is approximately the same as the cross-sectional shape of the lighting fixture 11. The camera housing 40 includes a case 44 and a cover 45 that is removably attached to the front side of the case 44.

The case 44 is made of a metal such as die-cast aluminum and is formed as a single unit. The case 44 has a rectangular back portion 47, side portions 48 provided on both sides of the back portion 47 in the width direction, and end portions 49 provided on both ends of the back portion 47 in the longitudinal direction, and is open on the front side.

At the center of the width direction at one end side of the case 44 facing the instrument body 15, a connecting portion 50 that is connected to the instrument body 15 protrudes. The connecting portion 50 extends from the back surface portion 47 and protrudes outward from the end surface portion 49 on the one end side. The connecting portion 50 is provided with a plurality of boss portions 51. The connecting portion 50 is inserted into the instrument body 15 through the communication hole 25 provided in the end plate portion 21 of the instrument body 15 and arranged on the front side of the top plate portion 19, and a plurality of screws, which are fasteners inserted from the back side of the top plate portion 19, are screwed into the plurality of boss portions 51, thereby fastening and fixing the connecting portion 50 to the instrument body 15. Therefore, the case 44 is connected and fixed to the instrument body 15 via the connecting portion 50.

A wiring groove 52 is provided in the center of the width of the end face 49 on one end of the case 44 facing the instrument body 15, and communicates with the communication hole 25 provided in the end plate 21 of the instrument body 15. A through hole 53 for attaching the cover is provided on one side of the width of the end face 49 on one end, and communicates with the through hole 26 provided in the end plate 21 of the instrument body 15. A claw portion 54 is provided on the other end of the case 44, which is the opposite side to the instrument body 15, to hook the cover 45 and removably engage it.

The cover 45 is made of a metal such as die-cast aluminum and is formed as a single unit. The cover 45 is formed to have approximately the same cross-sectional shape as the light-transmitting cover 35 of the light source unit 16. In other words, the cover 45 is formed so that the cross-sectional shape in the width direction is a convex curved surface on the front side. A window portion 55 is formed in the center of the front side of the cover 45, in which part of the camera body 41 is disposed. A plurality of boss portions 56 to which the camera body 41 is attached are protruded on the rear side of the cover 45.

At one end of the cover 45 facing the instrument body 15, a cover mounting portion 57 is inserted and positioned inside the end surface portion 49 at one end of the case 44 and protrudes from the back side. The cover mounting portion 57 is provided with a mounting hole 58 that is positioned opposite the insertion hole 53 of the case 44 at a position where the cover 45 is assembled to the front side of the case 44. Then, a screw, which is a fastener, is screwed into the mounting hole 58 from inside the instrument body 15 through the insertion hole 26 of the instrument body 15 and the insertion hole 53 of the case 44, thereby fixing the cover 45 to the case 44. In addition, a locking hole that is hooked onto the claw portion 54 of the case 44 and locked is formed at the other end of the cover 45.

The camera body 41 also includes a camera chassis 61, a number of boards 62 attached to the camera chassis 61, an imaging unit 63 provided on one of the boards 62, an optical system 64 combined with the imaging unit 63, and a protective cover 65 that covers the number of boards 62.

As shown in Figures 4 to 6, the camera chassis 61 is made of a metal plate and is formed long in the longitudinal direction of the camera housing 40. Fixed parts 67 that are attached to the rear side of the cover 45 are provided at both ends of the camera chassis 61 in the longitudinal direction, and an imaging board attachment part 68 that is bent toward the rear side is provided in the middle part. The fixed parts 67 at both ends are attached to the rear side of the cover 45 with screws 69 that pass through the fixed parts 67 and are screwed into the boss parts 56 of the cover 45.

The board 62 includes an imaging board 71 on which the imaging unit 63 is provided on the front side, a drive board 72 that drives the imaging unit 63 and processes data captured by the imaging unit 63, and a communication board 73 that communicates with the outside. The imaging board 71, drive board 72, and communication board 73 are arranged in parallel with the board surface on which components are mounted facing forward and backward. In the camera unit 12, the imaging board 71, drive board 72, and communication board 73 are arranged in this order from the front side, which is the light irradiation side corresponding to the light irradiation direction of the lighting fixture 11, to the rear side, which is the opposite non-light irradiation side. The imaging board 71 and drive board 72 are connected by a harness so that the drive board 72 can supply power to the imaging board 71 and are connected to each other so that they can communicate with each other, and the drive board 72 and communication board 73 are connected by a harness so that they can communicate with each other.

The imaging board 71 is smaller than the drive board 72 and the communication board 73, and has the imaging unit 63 mounted on its front side. The imaging board 71 is provided with a control circuit for controlling the imaging unit 63. The imaging board 71 is attached to the front side of the imaging board attachment part 68 of the camera chassis 61 at a predetermined distance by a plurality of metal attachment members 74. The attachment members 74 may be configured using a spacer between the imaging board 71 and the camera chassis 61, screws and nuts that fasten and fix the imaging board 71 and the camera chassis 61 via the spacer, or other attachment structures may be used. The rear side of the imaging board 71 corresponding to the position of the imaging unit 63 and the camera chassis 61 are thermally connected with each other via a heat conductive member 75 interposed therebetween.

The drive board 72 is provided with a power connector 76 and a circuit including a drive circuit for driving the imaging unit 63 and a processing circuit for acquiring and processing data captured by the imaging unit 63. A second output line 77 from the second power supply unit 29 is connected to the connector 76, and DC power of, for example, 5 V is supplied. The connector 76 is mounted at one end of the drive board 72 facing the lighting fixture 11, at a position that is off the position facing the wiring groove 52 of the case 44, and is forward of the position of the wiring groove 52 and offset to one side in the width direction. The second output line 77 is detachably inserted and connected to the connector 76 from a direction corresponding to the longitudinal direction of the lighting fixture 11. The drive circuit operates with DC power of, for example, 5 V supplied by the second output line 77 from the second power supply unit 29, and supplies power to the imaging board 71. The drive circuit also converts, for example, 5 V DC power into DC power of a predetermined voltage, such as 3.3 V, and supplies it to some circuits. Among the components mounted on the drive board 72, components 78 that generate a large amount of heat, such as those that convert power, are thermally connected to the camera chassis 61 by heat conductive members 79.

The communication board 73 is equipped with a connector 80, which is a modular jack for communication, and is also provided with circuits including a power conversion circuit that supplies a predetermined power to the circuit of the communication board 73, and a communication circuit that communicates with the outside.

A communication cable 81 that is wired from the lighting fixture 11 and can supply power as well as communication is connected to the connector 80. The communication cable 81 is, for example, a LAN cable compatible with Power over Ethernet (PoE) (registered trademark). One end of the communication cable 81 is connected to a PoE connector of a PoE-compatible hub that relays communication with a specified network, and the other end is pulled into the camera unit 12 through the lighting fixture 11 and connected to the connector 80. In addition to its function of communicating with the outside, the communication cable 81 also functions as a power cable that supplies DC power of, for example, 48 V from the hub to the communication board 73.

The connector 80 is mounted on one end of the communication board 73 facing the lighting fixture 11, at a central position in the width direction facing the wiring groove 52 of the case 44. The communication cable 81 is removably inserted and connected to the connector 80 from a direction corresponding to the longitudinal direction of the lighting fixture 11.

A modular plug 82 is provided at the end of the communication cable 81, which is inserted into the connector 80, which is a modular jack. The modular plug 82 has a locking portion that prevents the modular plug 82 from coming loose from the connector 80 when it is connected to the connector 80, and a removal operation portion 83 that disengages the locking portion from the connector 80 and allows the modular plug 82 to be removed. The modular plug 82 is inserted into the connector 80 so that the removal operation portion 83 faces the front side of the camera body 41.

The power conversion circuit of the communication board 73 converts DC power of, for example, 48 V supplied by the communication cable 81 into DC power of a predetermined voltage, for example, 5 V, and supplies it to the communication circuit of the communication board 73. The communication circuit of the communication board 73 is capable of communicating with the outside through the communication cable 81, receiving control signals from the outside, and transmitting video data processed by the drive board 72 to the outside.

The drive board 72 and the communication board 73 are attached to the rear side of the camera chassis 61 with a predetermined interval between the camera chassis 61 and the drive board 72, and between the drive board 72 and the communication board 73, by a plurality of metal mounting members 84. The plurality of mounting members 84 are arranged at the four corners of the drive board 72 and the communication board 73. The mounting members 84 may be configured using a female-threaded spacer arranged on the front side of the drive board 72, a male-female-threaded spacer arranged on the rear side of the drive board 72 and screwed and fixed to the female-threaded spacer, a screw screwed into the female-threaded spacer from the front side of the camera chassis 61, and a screw screwed into the male-female-threaded space from the rear side of the communication board 73, or another mounting structure may be used.

A metal heat sink 86 is disposed on the rear side of the communication board 73. The heat sink 86 has legs 87 at the four corners, and the legs 87 are attached to the four corners of the rear side of the communication board 73 together with the communication board 73 by mounting members 84, and the parts other than the legs 87 are disposed at a predetermined interval on the rear side of the communication board 73. The heat sink 86 is provided with an opening 89 through which the connector 80 and some of the components 88 are inserted. The components 88 are heat-generating components including switching elements that perform power conversion in the power conversion circuit of the communication board 73. The components 88 and other heat-generating components on the communication board 73 are thermally connected to the heat sink 86 by heat conductive members 90. A sheet-shaped heat conductive member 91 is disposed on the rear side of the components 88, and when the multiple boards 62 are covered with the protective cover 65, the components 88 are thermally connected to the protective cover 65 via the heat conductive member 91.

As shown in Figures 4 and 6, the imaging unit 63 is composed of a solid-state imaging element such as a CMOS (Complementary Metal Oxide Semiconductor) or a CCD (Charge Coupled Device), and is disposed on the front side of the imaging board 71.

As shown in Figures 4 and 7, the optical system 64 includes a lens holder 93 attached to the front side of the imaging board 71, a lens 94 attached to the lens holder 93, a lens cover 95 that covers the lens 94, and a gasket 96 that seals the gap between the lens holder 93 and the lens cover 95.

The lens holder 93 has a cylindrical holder portion 97 that opens in the front-rear direction facing the imaging unit 63. A female thread 98 for attaching the lens 94 is formed on the inner circumference of the holder portion 97.

The lens 94 is formed in a predetermined lens shape so as to have an angle of view corresponding to a predetermined shooting area, and focuses light on a subject in the predetermined shooting area onto the imaging unit 63. The lens 94 is formed with a lens attachment section 99 that is inserted into the holder section 97 of the lens holder 93, and the outer circumferential surface of the lens attachment section 99 is provided with a male screw 100 that is screwed into the female screw 98 of the holder section 97 of the lens holder 93. Therefore, the lens 94 can be attached to and detached from the lens holder 93 by a rotational operation.

The lens cover 95 is formed in a cylindrical shape that opens at the front and rear, and its rear side is attached to the front side of the camera chassis 61. The center of the front side of the lens cover 95 protrudes forward, and an opening 101 in which the lens 94 is disposed is provided. As shown in Figures 3 and 4, one end side of the lens cover 95 is attached to the camera chassis 61 with a screw 102, and the other end side is pressed against the camera chassis 61 by a pressing member 104 attached to the camera chassis 61 with a screw 103.

The packing 96 is made of a material such as rubber or silicone, has elasticity and light blocking properties, and is formed in a cylindrical shape. The packing 96 includes a cylindrical lens holder contact portion 105 that is attached in close contact with the outer peripheral surface of the holder portion 97 of the lens holder 93, a lens contact portion 106 that is in contact with the outer peripheral surface of the lens 94, and a lens cover contact portion 107 that is in close contact with the inner peripheral surface of the lens cover 95. Between the lens holder contact portion 105 and the lens cover contact portion 107, an expansion portion 108 that expands toward the front is formed. The lens cover contact portion 107 protrudes from the outer peripheral portion of the front end of the expansion portion 108, and the packing 96 is relatively inserted from the rear side of the lens cover 95, so that the tip side of the lens cover contact portion 107 elastically contacts the inner peripheral surface of the lens cover 95.

As shown in Figs. 3 and 4, the protective cover 65 is made of resin, for example, and is formed in a box shape with an open front side, allowing a plurality of circuit boards 62 to be stored between the protective cover 65 and the camera chassis 61. The front end side of the protective cover 65 is provided with a plurality of mounting claws 110 that are detachably attached to the camera chassis 61. The protective cover 65 is provided with insertion holes 111, 112 at positions facing the connector 76 and the connector 80, respectively, into which the second output line 77 and the communication cable 81 are inserted, respectively.

When the camera body 41 is in the assembled state arranged inside the camera housing 40, the rear side of the protective cover 65 faces closely to the rear part 47 of the case 44, allowing heat generated on the camera body 41 side to be dissipated from the rear side of the protective cover 65 to the rear part 47 of the case 44.

When installing the lighting device 10, the light source unit 16 is removed from the fixture body 15, the cover 45 to which the camera body 41 is attached is removed from the case 44 of the camera unit 12, and the case 44 of the camera unit 12 is attached to the fixture body 15.

The power line and communication cable 81 drawn from the ceiling surface, which is the installation surface, are passed through the first wiring hole 22 and the second wiring hole 23 of the fixture body 15, respectively, and the back side of the fixture body 15 is attached to the ceiling surface.

The power line is connected to the terminal block 27. The communication cable 81 and the second output line 77 from the second power supply unit 29 are passed through the communication hole 25 at the end of the device body 15 to the case 44 side of the camera unit 12, and these communication cable 81 and second output line 77 are inserted and connected to the connector 80 and connector 76 of the camera body 41, respectively.

The cover 45 of the camera unit 12 is hooked onto the claw portion 54 of the case 44, and the cover 45 is placed over the front side of the case 44. This causes the cover attachment portion 57 to be inserted inside the end surface portion 49 of the case 44, and the attachment hole 58 of the cover attachment portion 57 is positioned opposite the insertion hole 53 of the end surface portion 49. The cover 45 is attached to the case 44 by screwing it into the attachment hole 58 of the cover attachment portion 57 from inside the instrument body 15 through the insertion hole 26 of the instrument body 15 and the insertion hole 53 of the end surface portion 49.

At this time, the orientation of the modular plug 82 of the communication cable 81 that is inserted into the connector 80 is such that the removal operation unit 83 faces the front side of the camera body 41, which prevents the removal operation unit 83 from being operated accidentally while attaching the cover 45 to the case 44, thereby preventing poor connection between the modular plug 82 of the communication cable 81 and the connector 80.

The second output line 77 from the second power supply unit 29 may be connected to the connector 76 in advance, and the cover 45 may be attached to the case 44 before installation. In this case, the modular plug 82 of the communication cable 81 may be inserted and connected to the connector 80 facing the communication hole 25 through the communication hole 25 at the end of the device body 15.

The mounting spring 36 of the light source unit 16 is raised against the spring force and hooked onto the spring receiving bracket 30 of the fixture body 15, and the first output line from the first power supply 28 and the input line from the light source unit 16 are connected via a connector. By pushing the light source unit 16 up towards the fixture body 15, the spring force of the mounting spring 36 causes the light source unit 16 to be pulled up and attached to the fixture body 15, completing the installation.

When AC power is supplied to the lighting device 10 from a commercial AC power source, the first power supply unit 28 converts the AC power into a predetermined DC power and supplies it to the light source 34 of the light source unit 16, causing the light source 34 to light up and provide illumination.

Furthermore, when AC power is supplied to the lighting device 10 from a commercial AC power source, the second power supply unit 29 converts the AC power into a specified DC power and supplies it to the drive board 72 of the camera unit 12 via the second output line 77, causing the circuit of the drive board 72, the circuit of the imaging board 71, and the imaging unit 63 to operate. In addition, a specified DC power is supplied to the communication board 73 via the communication cable 81, causing the communication board 73 to operate.

Then, in the camera unit 12, the imaging unit 63 captures an image of a predetermined shooting area including the area illuminated by the lighting fixture 11, the image data captured by the imaging unit 63 is processed by the processing circuit of the drive board 72, and the processed image data is transmitted to the outside via the communication circuit of the communication board 73.

In addition, in the camera unit 12, heat generated by the operation of the imaging section 63 is transferred from the imaging board 71 to the camera chassis 61 via the thermally conductive member 75 and the mounting member 74, and heat generated from the circuit of the drive board 72 is transferred to the camera chassis 61 via the thermally conductive member 79 and the mounting member 84, from this camera chassis 61 to the metal cover 45, and further from the cover 45 to the metal case 44, where it is dissipated into the outside air from the surfaces of these cover 45 and case 44.

Heat generated from the circuit of the communication board 73 is transferred to the heat sink 86 via the thermal conductive member 90, then transferred from the heat sink 86 to the camera chassis 61 via the mounting member 84, then transferred from the camera chassis 61 to the metal cover 45, and then transferred from the cover 45 to the metal case 44, and is dissipated into the outside air from the surfaces of the cover 45 and case 44.

Heat generated by component 88, which is a heat-generating component including a switching element that performs power conversion in the power conversion circuit of the communication board 73, is transferred to the protective cover 65 via the thermal conductive member 91, dissipated from the surface of this protective cover 65 to the closely-facing case 44, and then dissipated from the surface of this case 44 and further from the surface of the cover 45 into the outside air.

The camera unit 12 converts the power supplied by the communication cable 81 and the power supplied from the second power supply unit 29 to the second output line 77. When converting the power supplied from the second power supply unit 29 to the second output line 77, the difference in the converted voltage is relatively small and therefore the amount of heat generated is relatively small, whereas when converting the power supplied by the communication cable 81, the difference in the converted voltage is relatively large and therefore the amount of heat generated is relatively large. Therefore, if the heat generated by the conversion of the power supplied by the communication cable 81 affects the imaging unit 63, the heat dissipation ability of the imaging unit 63 is impaired and the temperature of the imaging unit 63 increases.

Therefore, by arranging the imaging board 71, drive board 72, and communication board 73 in this order from the front side to the rear side of the camera unit 12 and separating and separating the imaging board 71 and communication board 73, it is possible to reduce the effect of heat generated by the communication board 73 on the imaging section 63 of the imaging board 71.

In this way, in the lighting device 10 of this embodiment, the imaging unit 63 is disposed on the front side, which is the light irradiation side, and the connector 80 to which the communication cable 81 capable of supplying power is connected is disposed on the back side, which is the non-light irradiation side. This allows the imaging unit 63 to be separated from the heat source associated with the power supply to the connector 80, facilitating heat dissipation from the imaging unit 63, and suppressing temperature rise in the imaging unit 63.

Furthermore, the camera unit 12 is equipped with a plurality of boards 62, and as the boards 62, an imaging board 71 on which an imaging section 63 is provided is arranged on the light irradiation side, and a communication board 73 on which a connector 80 is provided is arranged on the non-light irradiation side, so that the imaging board 71 and the communication board 73 can be separated and the temperature rise of the imaging section 63 can be suppressed.

Moreover, by dividing it into multiple boards 62, i.e., into an imaging board 71, a drive board 72, and a communication board 73, the area of the board surface is smaller than in the case of a single board, and by stacking the board surfaces so that they are parallel, the camera body 41 can be made small, and the camera body 41 can be housed within a camera housing 40 that has approximately the same cross-sectional shape as the lighting fixture 11.

By suppressing the temperature rise of the imaging unit 63, noise in the image captured by the imaging unit 63 can be reduced, and deterioration of image quality can be suppressed.

In addition, the second power supply unit 29 that supplies driving power to the imaging section 63 of the camera unit 12 is disposed on the long device body 15 of the lighting device 11, so that heat generated by the second power supply unit 29 does not affect the imaging section 63, and temperature rise of the imaging section 63 can be suppressed.

In addition, in the optical system 64, the gap between the lens holder 93 and the lens 94 and the lens cover 95 is sealed with a gasket 96, which prevents dust and insects from entering the interior of the camera unit 12 from the outside.

Furthermore, the lens 94 is configured to be detachable from the lens holder 93 with a gasket 96 attached between the lens holder 93 and the lens cover 95. Therefore, when the shooting area, i.e., the angle of view of the lens 94, is changed, or when the lens 94 becomes dirty or damaged, it is possible to easily replace only the lens 94 without disassembling the camera unit 12.

In addition, an expansion portion 108 that expands forward is provided between the lens holder contact portion 105 and the lens cover contact portion 107 of the packing 96, so that even when a lens 94 with a wide angle of view is used, the angle of view is prevented from being restricted by the packing 96.

The camera unit 12 may also be designed to operate the imaging unit 63 and other components using power supplied through the communication cable 81 without using the second power supply unit 29.

In addition, the lighting device 10 is not limited to a combination of the camera unit 12 and a base light type lighting fixture 11, but may also be combined with a ceiling light, security light, street light, high ceiling fixture, etc.

Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be embodied in various other forms, and various omissions, substitutions, and modifications can be made without departing from the gist of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are included in the scope of the invention and its equivalents described in the claims.

REFERENCE SIGNS LIST 10 Illumination device 11 Illumination fixture 12 Camera unit 15 Fixture body 16 Light source unit 28 First power supply unit 29 Second power supply unit
41 Camera body
62 Board 63 Imaging unit 71 Imaging board 73 Communication board 80 Connector 81 Communication cable

Claims (2)

A lighting device for emitting light;
a camera unit having a camera body that houses an imaging section arranged on a light irradiation side corresponding to a light irradiation direction of the lighting fixture , an imaging board arranged on the light irradiation side and on which the imaging section is provided, a communication board arranged on a non-light irradiation side opposite to the light irradiation side on which the imaging board is arranged, and a connector arranged on the communication board and to which a communication cable capable of supplying DC power wired from the lighting fixture side is connected , wherein at least the communication board is operated by DC power supplied through the communication cable connected to the connector, and communication is performed through the communication cable;
A lighting device comprising : The lighting fixture comprises:
an elongated device body having an end provided with the camera unit and having the communication cable connected to the connector of the camera body wired thereto ;
A light source unit disposed in the device body;
A first power supply unit that is disposed between the fixture body and the light source unit and turns on the light source unit;
a second power supply unit disposed in the device body and supplying power for driving the imaging unit of the camera body ;
2. The lighting device according to claim 1, further comprising:

Images