Lighting device

Abstract

To provide a lighting device capable of reducing influence of noise on a communication system that transmits to the outside video captured by a camera.SOLUTION: A lighting device comprises a lighting unit, a housing 50 arranged in parallel with the lighting unit, a camera 51 arranged in the housing 50, a power supply terminal block 53, a camera power supply 52, and a communication connector 54. The camera power supply 52 converts external power supplied through the power supply terminal block 53 to supply it to the camera 51. The communication connector 54 is arranged at a position farther from the power supply terminal block 53 of the housing 50 than the camera power supply 52.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] Embodiments of the present invention relate to lighting devices.

Background Art

[0002] Conventionally, there is a lighting device provided with a camera. In this lighting device, for the camera, there may be provided a power supply terminal block for inputting external power, a camera power supply for converting the external power input through the power supply terminal block and supplying it to the camera, and a communication connector for transmitting an image signal captured by the camera to the outside.

[0003] In this case, there is a concern that noise superimposed on the external power input to the power supply terminal block may affect the video signal transmitted from the communication connector to the outside.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] The problem to be solved by the present invention is to provide a lighting device capable of reducing the influence of noise on a communication system for transmitting an image signal captured by a camera to the outside.

Means for Solving the Problems

[0006] The lighting device according to the embodiment includes a lighting unit, a housing arranged side by side with the lighting unit, and a A camera mounting plate and the equipment installed on the camera mounting plate camera and power supply terminal block and , A camera power supply mounting plate is installed on the housing, and the camera power supply mounting plate is installed camera power supply And a spacer is placed between the camera mounting plate and the camera power supply mounting plate, communication connector And, the heat dissipation component that protrudes from the side of the camera power supply mounting plate on the camera mounting plate,It is equipped with the following. The camera power supply converts external power supplied through the power terminal block and supplies it to the camera. The communication connector is located further away from the power terminal block of the housing than the camera power supply. [Effects of the Invention]

[0007] According to the lighting device of this embodiment, it is expected that the impact of noise on the communication system that transmits video signals captured by the camera to the outside can be reduced. [Brief explanation of the drawing]

[0008] [Figure 1] This is a perspective view of a lighting device showing one embodiment. [Figure 2] This is a perspective view of the same lighting device. [Figure 3] This is an exploded perspective view of the camera unit of the same lighting device. [Figure 4] This is a side view showing the internal structure of the same camera unit. [Figure 5] This is a perspective view showing the mounting structure of the camera unit shown above. [Modes for carrying out the invention]

[0009] One embodiment will be described below with reference to the drawings.

[0010] As shown in Figures 1 and 2, the lighting device 10 is a high-ceiling lighting device that is installed on the ceiling structure of a high-ceiling space in a factory, warehouse, or other facility, and illuminates by shining light downwards.

[0011] The lighting device 10 includes a lighting unit 11, a light source power supply 12 that supplies power to the lighting unit 11, an arm 13 that integrally supports the lighting unit 11 and the light source power supply 12 in an angle-adjustable manner, and a camera unit 14 that is mounted side by side on the lighting unit 11.

[0012] The lighting unit 11 includes a light source module (not shown) which is a light source, a heat sink 20 disposed on the underside of the light source module, a reflector (not shown) disposed on the underside of the light source module to control the light distribution from the light source module, and a cover 21 that covers the light source module and the reflector between the heat sink 20 and the light source module. The light source module includes a substrate and a light-emitting element mounted on the substrate. For example, semiconductor light-emitting elements such as LEDs and organic ELs are used as light-emitting elements. The heat sink 20 is made of metal and includes a heat sink plate 22 on the underside to which the light source module is attached, and a plurality of heat-dissipating fins 23 erected on the upper side of the heat sink plate 22. The cover 21 is translucent, allowing light from the light source module to pass through, and is attached to the heat sink 20, covering the light source module and the reflector.

[0013] The light source power supply 12 also includes a power terminal block 24 and a signal terminal block 25 for the light source, a power supply circuit (not shown) for the light source, and a power supply case 26 that houses these terminal blocks 24, 25 and the power supply circuit. The power terminal block 24 is connected to a power line that supplies AC power, which is external power from, for example, a commercial AC power source. The signal terminal block 25 is connected to a signal line that transmits signals such as dimming signals. The power supply circuit is, for example, an AC-DC converter that converts the AC power input through the power terminal block 24 into a predetermined lighting power, which is DC power, and supplies it to the light source module of the lighting unit 11. Furthermore, it turns the light source module of the lighting unit 11 on, off, and dims it in accordance with the dimming signal input through the signal terminal block 25.

[0014] The arm 13 also comprises a first arm 27 and a pair of second arms 28 and 29 that are angle-adjustably connected to both ends of the first arm 27. The first arm 27 has a roughly U-shaped cross-section, with a mounting portion 30 that is attached to a ceiling structure and arm portions 31 that are bent at roughly right angles from both ends of the mounting portion 30. The mounting portion 30 is provided with a plurality of mounting holes 32 for attachment to a ceiling structure. The lower ends of the pair of second arms 28 and 29 are connected to the heat sink 20 of the lighting unit 11, and the upper ends are angle-adjustably connected to the pair of arm portions 31 of the first arm 27. Light source electrodes 12 are mounted between the inner sides of the pair of second arms 28 and 29, spaced apart from the upper surface of the lighting unit 11.

[0015] Each arm portion 31 of the first arm 27 is provided with a pivot shaft insertion hole 33 and an arc-shaped elongated hole 34 centered on the pivot shaft insertion hole 33. The upper ends of the second arms 28 and 29 are provided with a pivot shaft mounting hole 35 and a fixing mounting hole 36, corresponding to the positional relationship between the pivot shaft insertion hole 33 and the elongated hole 34 of the arm portion 31. A pivot shaft bolt (not shown), which serves as the pivot shaft, is inserted through the pivot shaft insertion hole 33 of the arm portion 31 and screwed into the pivot shaft mounting hole 35 of the second arms 28 and 29, thereby rotatably connecting the first arm 27 and the second arms 28 and 29 around this pivot shaft bolt. Furthermore, a fixing bolt (not shown) is screwed through an elongated hole 34 in the arm portion 31 into a fixing mounting hole 36 in the second arms 28, 29. When the fixing bolt is loosened, the angle between the first arm 27 and the second arms 28, 29 can be adjusted within the range that the elongated hole 34 is movable relative to the fixing bolt. When the fixing bolt is tightened, the first arm 27 and the second arms 28, 29 are fixed in the angle-adjusted position.

[0016] As shown in FIGS. 1, 2, and 5, one of the second arms 28 can attach the camera unit 14. The second arm 28 includes an arm plate portion 37 that is elongated in the vertical direction, side edge portions 38 that are bent outward from both sides of the arm plate portion 37 in the direction opposite to the illumination unit 11, and a support portion 39 that is bent outward from the lower end of the arm plate portion 37 in the direction opposite to the illumination unit 11. A mounting hole 35 for a rotation shaft and a mounting hole 36 for fixing are provided on the upper end side of the arm plate portion 37. A plurality of screw insertion holes 40 for screwing to the radiator 20, a plurality of mounting holes 41 for attaching the camera unit 14, and a plurality of screw insertion holes 42 for screwing the light source power supply 12 are provided in the middle portion of the arm plate portion 37 in the vertical direction. The support portion 39 is provided with a plurality of screw insertion holes 43 for screwing the camera unit 14.

[0017] Also, FIGS. 1 to 5 show the camera unit 14. The camera unit 14 is attached to one of the second arms 28 of the arm 13 and is arranged side by side on the side of the illumination unit 11.

[0018] The camera unit 14 includes a metal housing 50, a camera 51 disposed in the housing 50, a camera power supply 52, a power terminal block 53, a communication connector 54, and the like.

[0019] The housing 50 is formed in a rectangular box shape having a bottom surface portion 57, surrounding side surface portions 58, 59, 60, 61, and an upper surface portion 62. The housing 50 is formed in a rectangular box shape that is a rectangular parallelepiped in which the distance between one pair of opposing side surface portions 58, 60 is shorter than the distance between the other pair of opposing side surface portions 59, 61. The side surface portion 59 is arranged outward in the direction opposite to the illumination unit 11, the side surface portion 60 is arranged facing the illumination unit 11, and the side surface portion 60 is arranged in the same direction as the side surface on which the power terminal block 24 of the light source power supply 12 is arranged.

[0020] The housing 50 is divided into a first housing member 63, a second housing member 64, and a lid member 65, and these are assembled to form a box shape.

[0021] The first housing member 63 has a bottom portion 57, a side portion 58 that is bent and raised from one of the long sides of the bottom portion 57, and a side portion 59 that is bent at approximately a right angle from one of the side edges of the side portion 58 and positioned on one of the short sides of the bottom portion 57. An opening 66 is formed in the central region of the bottom portion 57, and a resin cover plate 67 is attached to the bottom portion 57 so as to cover this opening 66. A window hole 68 is formed in the cover plate 67 in which a part of the camera 51 is placed. A lower mounting piece 69 is provided projecting from the other long side of the bottom portion 57 and is inserted and positioned on the support portion 39 of the second arm 28, and a mounting hole 71 is provided in this lower mounting piece 69 into which a screw 70 inserted through a screw insertion hole 43 of the support portion 39 is screwed. On the upper side of the side portion 58, near the side edge away from the side portion 59, a communication connector opening 72 is provided in which a communication connector 54 is disposed. An opening 73 for a terminal block is provided on the upper side of the side section 59, where the power terminal block 53 is located.

[0022] The second housing member 64 has a side portion 60 and a side portion 61 bent at approximately a right angle from one side edge of the side portion 60. The side portion 60 and the side portion 61 are attached to the side edges of the side portions 59 and 58 of the first housing member 63, respectively, and are positioned on the other long side and the other short side of the bottom portion 57. The upper end of the side portion 60 is provided with an approximately L-shaped upper mounting piece 74 that is bent at approximately a right angle so as to protrude from the outer surface of the side portion 60, and whose tip is bent upward at approximately a right angle. A screw insertion hole 75 for screw fastening is provided at the tip of the upper mounting piece 74. The upper mounting piece 74 is inserted between a pair of side edge portions 38 of the second arm 28 and attached to the second arm 28 by screwing a screw 76 through the screw insertion hole 75 into the mounting hole 41 of the second arm 28. A predetermined gap is left between the side portion 60 and the arm plate portion 37 of the second arm 28, and the heads of the bolts connecting the second arm 28 to the heat sink 20 are positioned within that gap.

[0023] The lid member 65 has an upper surface portion 62 and covers the upper opening of the combined first housing member 63 and second housing member 64, and is attached to the first housing member 63 and second housing member 64 by screw fastening.

[0024] In the camera unit 14, the lower mounting piece 69 protruding from the side portion 60 of the housing 50 is inserted onto the support portion 39 of the second arm 28 and fixed with a screw 70, and the upper mounting piece 74 is fixed to the second arm 28 with a screw 76, so that it is securely fixed to the second arm 28 at two points, above and below.

[0025] The lower side of the housing 50, which is fixed to the second arm 28, is positioned at approximately the same height as the lower side of the cover 21 of the lighting unit 11.

[0026] Furthermore, the camera 51 includes an imaging unit 80 having an image sensor (not shown) for photographing a subject below and a lens 79 for focusing light from the subject onto the image sensor, and a circuit unit 81 for controlling the imaging unit 80.

[0027] The image sensor is a solid-state image sensor such as a CMOS (Complementary Metal Oxide Semiconductor) or a CCD (Charge Coupled Device). The lens 79 is positioned to protrude downward from the window hole 68 of the cover plate 67 of the housing 50, and focuses the light from the subject in the lower area onto the image sensor. The lower end surface of the lens 79, which is the incident surface into which light enters, protrudes downward from the lower side of the cover 21 of the illumination unit 11, thereby suppressing the influence of light from the illumination unit 11. The imaging unit 80 (image sensor and lens 79) of the camera 51 is positioned closer to the illumination unit 11 than the center of the lower surface of the housing 50, allowing it to capture images from a position close to the optical axis in the direction of light irradiation from the illumination unit 11, thereby suppressing the effects of shadows and the like.

[0028] The circuit unit 81 includes a control circuit for controlling the image sensor, a processing circuit for processing the image captured by the image sensor, a storage unit for storing the captured image, and a communication circuit for connecting to external communication equipment via at least a wired connection.

[0029] The camera 51 is mounted on the lower side of a metal camera mounting plate 82. The camera mounting plate 82 is mounted on the lower surface 57 of the housing 50 by a plurality of metal rods 83. A heat dissipation member 84 is provided on the upper side of the camera mounting plate 82 to absorb and dissipate the heat generated by the camera 51 and transferred to the camera mounting plate 82. The heat dissipation member 84 is, for example, a metal plate bent into a roughly U-shape in cross-section, and is mounted on the upper surface of the camera mounting plate 82 such that both bent sides protrude upward to form a heat dissipation fin shape.

[0030] Furthermore, the camera power supply 52 is, for example, an AC-DC converter, which converts the AC power supplied from the commercial AC power supply through the power terminal block 53 into a predetermined operating power such as DC power, and supplies it to the circuit section 81 of the camera 51.

[0031] The camera power supply 52 is mounted on the upper surface of the metal camera power supply mounting plate 87 at predetermined intervals by a plurality of metal rods 86. The camera power supply mounting plate 87 is mounted on the camera mounting plate 82 at predetermined intervals from the upper surface of the camera mounting plate 82 by a plurality of metal rods 88 which act as spacers. A heat dissipation member 84 is placed between the camera power supply mounting plate 87 and the camera mounting plate 82. Within the housing 50, at least a portion of the camera power supply 52 is positioned at the same height as the power terminal block 53 and the communication connector 54, between the power terminal block 53 and the communication connector 54.

[0032] Furthermore, the power terminal block 53 is positioned to face a terminal block opening 73 provided in the side portion 59 of the housing 50, by a terminal block mounting member 91 attached to the inside of the side portion 59 of the housing 50. The power terminal block 53 is electrically connected to the power terminal block 24 of the light source power supply 12 by daisy-chain wiring. The power terminal block 53 and the camera power supply 52 are electrically connected by internal wires that are wired inside the housing 50.

[0033] Furthermore, the communication connector 54 is located on a side surface 58 of the housing 50 that is different from the side surface 59 on which the power terminal block 53 is located. The communication connector 54 is located further away from the power terminal block 53 than the camera power supply 52. ​​The communication connector 54 is inserted into a communication connector opening 72 provided on the side surface 58 by a communication connector mounting member 94 that is attached to the inside of the side surface 58 of the housing 50.

[0034] Within the housing 50, one end of an internal communication line 95 is connected to a communication connector 54, and the other end of this internal communication line 95 is electrically connected to the communication unit of the camera 51's circuit unit 81. The communication connector 54 is, for example, a LAN connector, and a LAN cable, which is a communication line, is connected to it from the outside. The camera unit 14 then allows devices connected to a predetermined network or devices directly connected via a LAN cable to view and record the video captured by the camera 51 through the LAN cable connected to the communication connector 54.

[0035] Then, when installing the lighting device 10, the mounting portion 30 of the arm 13 is attached to the ceiling structure.

[0036] If the ceiling structure to which the mounting part 30 is attached is inclined, the angle between the first arm 27 and the second arms 28, 29 is adjusted so that the lower side of the lighting unit 11, i.e., the direction of light irradiation, faces directly downwards.

[0037] By adjusting the angle of the lighting unit 11, the shooting direction of the camera unit 14 is adjusted to point directly downwards, in conjunction with the lighting unit 11. In other words, the direction of light emission from the lighting unit 11 and the shooting direction of the camera unit 14 are always adjusted to coincide.

[0038] The power lines wired to the installation location of the lighting device 10 are connected to the power terminal block 24 of the light source power supply 12. The power terminal block 24 of the light source power supply 12 and the power terminal block 53 of the camera unit 14 are electrically connected in advance by daisy-chain wiring, and AC power from the commercial AC power supply supplied to the power terminal block 24 of the light source power supply 12 is also supplied to the power terminal block 53 of the camera unit 14.

[0039] Furthermore, the dimming signal wires that are wired to the installation location of the lighting device 10 are electrically connected to the signal terminal block 25 of the light source power supply 12.

[0040] Furthermore, a communication signal line (LAN cable) wired to the installation location of the lighting device 10 is electrically connected to the communication connector 54 of the camera unit 14.

[0041] When AC power from a commercial AC power source is supplied to the lighting device 10, the light source power supply 12 converts the AC power into a predetermined lighting power and supplies it to the light source module of the lighting unit 11, causing the light-emitting elements of the light source module to light up. The light from the light-emitting elements passes through the cover 21 and illuminates the area below the lighting device 10.

[0042] Furthermore, the camera unit 14 converts the AC power supplied through the power terminal block 53 into a predetermined operating power and supplies it to the circuit section 81 of the camera 51, causing the camera unit 14 to operate.

[0043] The imaging unit 80 of the camera 51 captures images of the area below the lighting device 10, and the captured images are stored in the memory unit of the circuit unit 81. The captured images are transmitted externally via a communication line connected to the communication connector 54, allowing devices connected to a predetermined network or directly connected via a communication line to view and record the images.

[0044] In the camera unit 14, the camera 51 and camera power supply 52 generate heat during operation, causing a temperature rise. If the temperature of the camera 51 becomes too high, there is a concern that it may affect the operation of the camera 51 and the quality of the captured images. A gap is provided between the camera mounting plate 82 to which the camera 51 is attached and the camera power supply mounting plate 87 to which the camera power supply 52 is attached. Furthermore, a heat dissipation member 84 is provided on the camera mounting plate 82. As a result, the heat from the camera 51 is efficiently dissipated into the housing 50 and can be dissipated to the outside through the housing 50.

[0045] Some of the heat from the camera 51 and camera power supply 52 is transferred to the housing 50 via rods 83 and 88 for heat dissipation. However, the heat dissipation performance may be improved by configuring the camera mounting plate 82 and camera power supply mounting plate 87 to be thermally connected to the housing 50.

[0046] In the lighting device 10 configured in this way, the communication connector 54 is positioned further away from the power terminal block 53 than the camera power supply 52. ​​This reduces the impact of noise superimposed on the AC power input to the power terminal block 53 on the video signal transmitted to the outside from the communication connector 54.

[0047] Furthermore, since the camera power supply 52, the power terminal block 53, and the communication connector 54 are all located at the same height, and the power terminal block 53 is positioned between the camera power supply 52 and the communication connector 54, it is possible to reduce the impact of noise superimposed on the AC power input to the power terminal block 53 on the video signal transmitted to the outside from the communication connector 54.

[0048] Furthermore, since the communication connector 54 is located on a side surface 58 different from the side surface 59 of the housing 50 where the power terminal block 53 is located, it is possible to reduce the impact of noise superimposed on the AC power input to the power terminal block 53 on the video signal transmitted to the outside from the communication connector 54.

[0049] The communication connector 54 may be located on the side 61 of the housing 50 opposite to the side 59 where the power terminal block 53 is located.

[0050] While several embodiments of the present invention have been described, these embodiments are presented as examples only and are not intended to limit the scope of the invention. These novel embodiments can be carried out in a variety of other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their variations are included in the scope and spirit of the invention, as well as in the claims of the invention and its equivalents. [Explanation of Symbols]

[0051] 10 Lighting devices 11 Lighting Section 50 cabinets 51 Camera 52 Camera power supply 53 Power terminal block 54 Communication Connectors

Claims

1. Lighting section; A housing arranged alongside the aforementioned lighting unit; A camera mounting plate is disposed on the aforementioned housing; The camera mounted on the aforementioned camera mounting plate and; The power terminal block is located in the aforementioned enclosure; The camera power supply mounting plate is disposed on the aforementioned housing; A camera power supply is provided on the camera power supply mounting plate and converts external power supplied through the power terminal block to supply to the camera; A spacer disposed between the camera mounting plate and the camera power supply mounting plate; A communication connector located at a position further away from the power terminal block of the housing than the camera power supply; A heat dissipation member protruding from the camera mounting plate side of the camera mounting plate; A lighting device characterized by having the following features.

2. The power terminal block is arranged on one side of the housing, The communication connector is located on a side of the housing other than the side on which the power terminal block is located. The lighting device according to claim 1, characterized by the features described above.

Images