Lighting device

Abstract

To provide a lighting device capable of suppressing a projection amount of a power supply unit from the periphery of a housing.SOLUTION: A lighting device 10 comprises a housing 13, a light source module 47 and a power supply unit 45. The housing 13 has a rectangular parallelepiped shaped, and emits light from its front surface side. The light source module 47 is arranged in the housing 13. The power supply unit 45 is arranged on at least two opposing surface sides of the periphery of the housing 13 intersecting with a front-back direction, and supplies lighting power to the light source module 47.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] SUMMARY OF THE DISCLOSURE The present invention relates to a lighting device. [Background technology]

[0002] 2. Description of the Related Art Conventionally, in lighting devices such as spotlights used in studios, on stages, and the like, a light source is disposed within a housing, and a power supply unit that supplies lighting power to the light source is disposed below the housing.

[0003] In this lighting device, the power supply unit protrudes significantly from the bottom of the housing, and depending on the installation situation where multiple lighting devices are installed one above the other on a stage or in a studio, there is a risk that the power supply unit of the upper lighting device will interfere with the lighting device below. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2019-164971 A Summary of the Invention [Problem to be solved by the invention]

[0005] An object of the present invention is to provide a lighting device in which the amount of protrusion of a power supply unit from a housing is reduced. [Means for solving the problem]

[0006] The lighting device of the embodiment includes a housing, a light source, and a power supply unit. The housing has a rectangular parallelepiped shape, and light is emitted from the front side. The light source is disposed within the housing. The power supply unit is disposed on at least two opposing sides of a periphery intersecting the front-rear direction of the housing, and supplies lighting power to the light source. Effect of the Invention

[0007] According to the embodiment, it is expected that the amount of protrusion of the power supply unit from the housing can be reduced. [Brief description of the drawings]

[0008] [Figure 1] 1 is a perspective view of an illumination device according to an embodiment, as viewed from the front side. [Diagram 2] FIG. 2 is a perspective view of the lighting device as viewed from the rear side. [Diagram 3] FIG. 2 is a perspective view of a vertical section of the lighting device. [Figure 4] FIG. 2 is a cross-sectional perspective view of the lighting device. [Diagram 5] FIG. 2 is a perspective view of the power supply housing of the lighting device with the front cover, the front part of the housing, and the projection lens removed. [Figure 6] FIG. 2 is a front view of the lighting device with the front cover of the power supply housing removed. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, an embodiment will be described with reference to the drawings.

[0010] 1 and 2 show a lighting device 10. The lighting device 10 is a spotlight that is used in studios, stages, etc., and irradiates light toward an object to be irradiated. The spotlight may be a full-color spotlight that can reproduce and project a wide range of colors on the chromaticity coordinates, or a spotlight that irradiates light of a single color. In the lighting device 10, the direction along the light irradiation direction that irradiates light is defined as the front-rear direction, and the up-down direction and the left-right direction are defined as viewed from the front side of the light irradiation direction.

[0011] The lighting device 10 comprises a main body 11 and an arm 12 for suspending the main body 11 from a baton or the like installed on the ceiling side of a studio or stage.

[0012] The main body 11 includes a housing 13 and a power supply housing section 14 disposed around the front side of the housing 13. A band door or the like for limiting the range of light irradiation may be attached to the periphery or front side of the front side of the power supply housing section 14.

[0013] The arms 12 are attached to the main body 11 at the midpoint in the front-rear direction on both sides thereof so as to be angle adjustable. Although not shown in Figs. 1 and 2, the arms 12 may be provided with clamps and hangers that enable the lighting device 10 to be attached to a baton or the like.

[0014] 1 to 6 show the housing 13. The housing 13 includes a front portion 20 facing the forward light irradiation direction, a rear portion 21 facing the opposite direction to the light irradiation direction, and a top portion 22, side portions 23 on both sides, and a bottom portion 24 that constitute the periphery between the front portion 20 and the rear portion 21, and is formed in the shape of a rectangular parallelepiped that is elongated in the front-to-rear direction corresponding to the light irradiation direction.

[0015] The front surface 20 is provided with a circular opening 26 through which light is emitted forward from inside the housing 13.

[0016] The upper surface portion 22 and the lower surface portion 24 are provided with a plurality of ventilation holes 27, 28 in areas corresponding to a movement area in the front-rear direction of a heat sink 48 of the light source portion 42, which will be described later. The ventilation holes 27, 28 are provided facing each other in the vertical direction.

[0017] A wiring passage 29 is provided in the side portion 23 on both sides along the front-rear direction. A passage member 30 is attached to the outer surface of the side portion 23 on both sides along the front-rear direction, and the wiring passage 29 is provided between the passage member 30 and the outer surface of the side portion 23. As shown in FIG. 4, the rear end side of the wiring passage 29 communicates with the rear side inside the housing 13 through a communication opening 31 provided on the rear side of the side portion 23. The front end side of the wiring passage 29 is opened to communicate with the inside of the power supply housing 14. The wiring passage 29 may be provided inside the housing 13, for example, inside the side portion 23 of the housing 13, inside the upper surface portion 23 of the housing 13, or inside the lower surface portion 24 of the housing 13. The wiring passage 29 may also be provided outside the upper surface portion 22 or outside the lower surface portion 24 of the housing 13.

[0018] 2, the rear surface 21 is provided with a plurality of ventilation holes 32 on the upper side, a power input section 33 to which a power cable for supplying AC power is connected on the lower side, a power output section 34 for sending AC power input to the power input section 33 to the outside, a signal input section 35 to which a signal cable for transmitting a dimming or control signal such as a DMX signal is connected, a signal output section 36 for sending a signal input to the signal input section 35 to the outside, an adjustment section 37 for adjusting the light to be irradiated to the light irradiation target (e.g., the size of the range of the light to be irradiated, etc.), and a display operation section 38 including an operation section for performing various settings of the lighting device 10 and a display section for displaying the setting status and state of the lighting device 10. The display operation section 38 is covered with a cover 39 that can be opened and closed.

[0019] 3 and 4, a light source unit 42, an optical system 43 arranged along the light irradiation direction from the light source unit 42 to the front, and a sliding mechanism 44 for sliding the light source unit 42 in the light irradiation direction, or in the rear direction opposite to the front direction, are arranged inside the housing 13. A power supply unit 45 is arranged inside the power supply housing unit 14 on the front end side of the periphery of the housing 13.

[0020] The light source section 42 includes a light source module 47 which is a light source, a heat sink 48 arranged on the front side of the light source module 47, and a wiring section 49 arranged below the light source module 47 and the heat sink 48, and further includes at least a part of the optical system 43.

[0021] The light source module 47 includes a light source substrate 50 and a plurality of types of light emitting elements (eg, LEDs) (not shown) mounted on the light source substrate 50.

[0022] The light source substrate 50 is divided into a plurality of parts, which are combined into a polygonal shape such as a hexagon or a circle to form one light source substrate 50. The light source substrate 50 is a single-layer substrate or a single-sided substrate, and includes a base plate formed of a metal material such as aluminum, a resin material such as glass epoxy, or an inorganic material such as ceramics such as aluminum oxide or aluminum nitride, and a plurality of wiring patterns configured to enable a plurality of light-emitting elements to be lit in different systems for each type on the front side of the base plate. Each wiring pattern includes a plurality of mounting pads for mounting each light-emitting element, and a wiring pattern portion that connects the mounting pads for each type of light-emitting element in series or series-parallel and is connected to a connection connector that is a connection terminal portion provided in the peripheral portion on the front side of the light source substrate 50. The wiring pattern portion is wired between the plurality of mounting pads or along the peripheral region of the light source substrate 50, but when there is an intersection where some of the wiring pattern portions intersect, an upper wiring pattern portion that intersects with a jumper insulating layer provided on the lower wiring pattern portion is provided at the intersection, and the wiring pattern portions are insulated from each other.

[0023] In this embodiment, the light source board 50 is provided with, for example, four systems (four parallel circuit patterns), and the light source board 50 is provided with four pairs of wiring patterns (one pair of wiring patterns is an anode wiring pattern and a cathode wiring pattern, and there are four pairs of wiring patterns) and four connection connectors. Each connection connector has an input port to the system connected to the connection connector and an output port from the system connected to the connection connector. The input port is electrically connected to the anode wiring pattern of the system, and the output port is electrically connected to the cathode wiring pattern of the system. Note that the number of systems is not limited to four, and there may be four or more systems (e.g., eight systems) for each different color, or there may be two or more systems of the same color, such as red. Also, the connection connector may have a configuration in which the input port and the output port are separate.

[0024] The light emitting element is mounted within a circular mounting range having a predetermined radius from the center of the light source substrate 50. The light emitting element is, for example, a surface mount device (SMD) package type or a chip scale package (CSP) type light emitting element, which is connected to a mounting pad of a wiring pattern of the light source substrate 50 by soldering and emits light when lighting power is supplied from the power supply unit 45 through the wiring pattern. The light emitting element may have a lens portion disposed on the light irradiation surface. In this case, the light emitting element may be configured to function like a lens portion by forming a convex shape of a resin material, which is a sealing member of the light emitting element, toward the light irradiation direction to form a lens portion.

[0025] The light emitting elements may be white light emitting elements or light emitting elements of each light color such as red, green, blue, and cyan. Furthermore, light emitting elements containing phosphors that emit light of a mint color system, which is light green, yellow, or bluish green, or light of an amber color system, which is amber, may be used. The light emitting elements of each light color are arranged on the light source substrate 50 in consideration of color mixing. The light emitting elements may be light emitting elements that emit light of a single light color, or multi-color light emitting elements that can individually emit the above-mentioned multiple light colors. Then, the power supply unit 45 supplies lighting power to the light emitting elements of each color system according to the color of the light to be irradiated, and the light emitting elements of each color system are turned on.

[0026] The heat sink 48 is made of a metal such as aluminum, and has a plurality of fins 51 protruding from the rear side along the vertical direction. The light source module 47 and part of the optical system 43 are attached to the front side of the heat sink 48, and the heat sink 48 is supported by the sliding mechanism 44 and slid in the front-rear direction. The light source module 47 is attached so that the rear side of the light source board 50 is in direct or indirect surface contact with the front side of the heat sink 48 and is thermally connected. Here, "indirectly" means that a heat dissipation sheet or heat dissipation grease is interposed between the light source module 47 and the heat sink 48.

[0027] As the heat sink 48 slides while being supported by the sliding mechanism 44, the light source module 47, the wiring section 49, and at least a part of the optical system 43 also slide together. The light source module 47, the heat sink 48, the wiring section 49, and at least a part of the optical system 43 are all components of the light source section 42, which is also referred to as a sliding section. The wiring section 49 will be explained after the explanation of the optical system 43.

[0028] The optical system 43 refracts each light from the light-emitting elements and includes a first lens (not shown) having a plurality of, for example, collimator lenses that mainly refract each light from the light-emitting elements into parallel light parallel to the forward optical axis, a second lens 53 which is a focusing lens such as a Fresnel lens that receives the light refracted by the first lens and focuses it at a predetermined focusing position, an aperture frame 55 having a predetermined circular aperture 54 through which light passes, a diffuser plate 56 that is attached to the aperture frame 55 near the focusing position of the second lens 53 and receives the light focused by the second lens 53 and diffuses and mixes the colors, and a projection lens 57 that receives the light diffused by the diffuser plate 56 and irradiates it in the light irradiation direction. Furthermore, the optical system 43 includes a light-shielding frame member 58 that covers the periphery of the light source module 47, the first lens, and the second lens 53 and is attached to the front side of the heat sink 48, a first cylinder member 59 that is disposed between the light-shielding frame member 58 and the diffusion plate 56 and guides light from the second lens 53 to the diffusion plate 56, a second cylinder member 60 that expands forward from the periphery of the aperture frame 55, and a light-shielding plate 61 that is attached to the front end of the second cylinder member 60 and has a shape that is similar to the cross-sectional shape inside the housing 13. The direction of the optical axis is approximately the same as the direction in which light is emitted from the light-emitting element with the highest intensity.

[0029] In the optical system 43, a first lens, a second lens 53, a first cylindrical member 59, an aperture frame 55, a diffusion plate 56, a second cylindrical member 60, a light shielding plate 61, and a projection lens 57 are arranged in this order from the light source module 47 side toward the light irradiation direction, centered on the optical axis.

[0030] The first lens, the second lens 53, the light-shielding frame member 58, each of the cylindrical members 59, 60, the aperture frame 55, the diffusion plate 56 and the light-shielding plate 61 are supported by the heat sink 48 and are included in the light source section 42 which slides forward or backward together with the light source module 47 and the heat sink 48.

[0031] On both sides of the light shielding plate 61, wiring guides 62 are provided to reduce the possibility of the lighting power supply line 97 (described later) being caught between the light shielding plate 61 and the side surface portions 23 on both sides of the housing 13. The wiring guides 62 are provided in an area where the distance between the inner surface of the side surface portion 23 of the housing 13 and the light shielding plate 61 is relatively narrow. The wiring guides 62 are inclined from the side edges of the light shielding plate 61 so as to face the front and rear surfaces of the light shielding plate 61, and the middle portion is bent in a substantially dogleg shape so that the tip side is inclined so as to approach the front and rear surfaces of the light shielding plate 61. The light shielding plate 61 is positioned forward of the ventilation holes 27, 28 on the upper and lower surfaces of the housing 13 when the light source unit 42 is in the most rearward sliding down position.

[0032] The projection lens 57 is attached to the inside of the front surface 20 of the housing 13, and closes the opening 26 of the front surface 20. Note that the optical system 43 described above is an example, and is not limited to the above-mentioned form.

[0033] In addition, the wiring section 49 of the light source section 42 has an upper cover member 63 and a lower cover member 64 that are attached between the lower side of the light-shielding frame member 58 and the lower side of the light-shielding plate 61, a wiring space 65 formed between these upper and lower cover members 63, 64, and a relay terminal block 66 arranged within this wiring space 65.

[0034] Both side surfaces of the wiring space 65 between the upper and lower cover members 63, 64 are opened and communicate with the inside of the housing 13. A communication opening 67 is provided on the rear end side of the upper cover member 63 and the lower surface side of the light-shielding frame member 58, which communicates the wiring space 65 with the interior of the light-shielding frame member 58 in which the light source module 47 is arranged.

[0035] The relay terminal block 66 relays the electrical connection between the power supply unit 45 and the light source module 47. The relay terminal block 66 is attached to either one of the upper and lower cover members 63, 64. One end of a connection line connecting the relay terminal block 66 and the light source module 47 is connected to the relay terminal block 66, and the other end of the connection line is connected to a connector provided on the light source board 50 through a communication port 67. The connection lines are paired, one for a DC anode and one for a DC cathode, and are used for each system of the light source board 50 described above.

[0036] 3 to 5 show the sliding mechanism 44. The sliding mechanism 44 includes a sliding feed shaft 69 arranged with its axial direction along the front-rear direction on one side of the bottom side inside the housing 13 (the left side when viewed from the front face 20 of the housing 13), a sliding shaft 70 which is a support shaft arranged with its axial direction along the front-rear direction on the other side of the bottom side inside the housing 13 (the right side when viewed from the front face 20 of the housing 13), a sliding feed member 71 which engages with the sliding feed shaft 69 slidably along the axial direction, and a sliding member (not shown) which engages with the sliding shaft 70 slidably along the axial direction.

[0037] The sliding feed shaft 69 is cylindrical, and a feed groove is formed in a spiral shape on the circumferential surface. The front end side of the sliding feed shaft 69 is rotatably supported on the front surface part 20 of the housing 13, and the rear end side is rotatably supported on the rear surface part 21. The rear end side of the sliding feed shaft 69 protrudes rearward from the rear surface part 21 as the adjustment part 37, and a handle for rotating the sliding feed shaft 69 is attached to it.

[0038] The sliding shaft 70 is formed in a cylindrical shape. The front end side of the sliding shaft 70 is attached to the front surface portion 20 of the housing 13, and the rear end side is attached to the rear surface portion 21.

[0039] The sliding feed member 71 is formed in a long rectangular parallelepiped shape, and a cylindrical sliding hole is provided inside along the longitudinal direction, through which the sliding feed shaft 69 is inserted so as to be rotatable and axially slidable. A feed member 72 is attached to the sliding feed member 71 and inserted radially into the feed groove of the sliding feed shaft 69. The feed member 72 has, for example, a pin protruding from the tip of a screw screwed into the sliding feed member 71, which engages with the feed groove. When the sliding feed shaft 69 rotates, the feed member 72 is pushed axially by the edge of the feed groove, causing the sliding feed member 71 to slide forward or backward.

[0040] The sliding member through which the sliding shaft 70 passes is of similar or identical structure to the sliding feed member 71, but no feed member 72 is attached.

[0041] The sliding feed member 71 and the sliding member are attached to the front side of the heat sink 48 and connected together. This allows the light source unit 42, which is the sliding part, to slide only in the front-rear direction without rotating with respect to the sliding feed shaft 69 and the sliding shaft 70. In other words, it is possible to prevent the light source unit 42, which is the sliding part, from tilting when sliding, thereby preventing the sliding from being hindered.

[0042] When the light source unit 42 slides forward, the center of gravity of the main body 11 moves forward of the connection position of the arm 12 supporting the main body 11, and in a state in which the main body 11 can freely rotate with respect to the arm 12, the front side of the main body 11 faces downward due to the center of gravity. Also, when the light source unit 42 slides furthest rearward, the center of gravity of the main body 11 is near the connection position of the arm 12 supporting the main body 11, so that in a state in which the main body 11 can freely rotate with respect to the arm 12, the vertical orientation of the main body 11 can be easily adjusted.

[0043] 3 to 6 show the power supply unit 45. The power supply unit 45 is disposed around the front side of the housing 13 and is housed within the power supply housing unit 14.

[0044] The power supply housing 14 includes an upper cover 74 arranged opposite the upper surface 22 of the housing 13, a lower cover 75 arranged opposite the lower surface 24 of the housing 13, side cover parts 76 arranged opposite the side surface parts 23 on both sides of the housing 13, a front cover 77 attached to the front ends of the upper cover 74, the lower cover 75, and the side cover parts 76 on both sides so as to close the front sides of the upper cover 74, the lower cover 75, and the side cover parts 76 on both sides, and a rear cover 78 attached to the rear ends of the upper cover 74, the lower cover 75, and the side cover parts 76 on both sides. The front cover 77 is arranged and attached to the front side of the housing 13. The front cover 77 is provided with a circular opening 79 through which light passes, corresponding to the opening 26 of the housing 13. The rear cover part 78 closes the gap between the rear end sides of the upper cover part 74, the lower cover part 75, and the side cover parts 76 on both sides and the periphery of the housing 13, and is attached to the peripheral surface of the housing 13. The rear cover part 78 is provided with a communication port 78a through which the wiring passage 29 communicates. The power supply housing part 14 is attached to the housing 13 by the front cover part 77 attached to the front part 20 of the housing 13 and the rear cover part 78 attached to the periphery of the housing 13. It is preferable that the power supply housing part 14 is attached so that the front cover part 77 of the power supply housing part 14 is flush with the front part 20 of the housing 13, but this is not limited to this form. For example, the front cover part 77 of the power supply housing part 14 may be attached so that it is located forward or rearward of the front part 20 of the housing 13. In this embodiment, the upper cover part 74 or the lower cover part 75 and the side cover part 76 are connected so that the connection surface is curved, but this is not limited to this form. For example, the top cover part 74 or the bottom cover part 75 and the side cover part 76 may be connected so that the connection surface is one plane, or may be connected so that the connection surface is two or more planes. When the connection surface is one plane, the external shape of the power supply housing part 14 is octagonal when viewed from the front side. When the connection surface is two planes, the external shape of the power supply housing part 14 is rectangular or (thick) cross-shaped when viewed from the front side.

[0045] A power supply accommodating space 80 for accommodating the power supply unit 45 is formed inside the power supply housing unit 14 and between the peripheral surface of the housing 13. The power supply accommodating space 80 is provided so as to communicate over the entire periphery between the inner peripheral surface of the power supply housing unit 14 and the peripheral surface of the housing 13. In other words, the accommodating space 80 is a space sandwiched between each cover portion of the power supply housing unit 14 and each face portion of the housing 13 facing each cover portion.

[0046] The power supply unit 45 comprises two AC-DC power supply units 82 arranged on two opposing sides, that is, the top and bottom sides, around the housing 13, and separate DC-DC power supply units 83, two of which are arranged on each of the left and right side sides, which are two opposing sides different from the two opposing sides on which the AC-DC power supply units 82 are arranged around the housing 13.

[0047] Each AC-DC power supply unit 82 is configured with a power supply board 84 having multiple power supply components 85 mounted thereon, and converts AC power supplied from outside to the lighting device 10 into a predetermined DC power and supplies it to the DC-DC power supply unit 83. In each AC-DC power supply unit 82, the power supply board 84 is attached to the inner surfaces of the upper cover part 74 and the lower cover part 75 of the power supply housing 14, with the surface of the power supply board 84 on which the large power supply components 85 are mounted facing the outer surface of the housing 13.

[0048] Each DC-DC power supply unit 83 is configured with a power supply board 86 having multiple power supply components 87 mounted thereon, and converts the DC power supplied from the AC-DC power supply unit 82 into lighting power, which is a predetermined DC power, and supplies it to the light source module 47. Each DC-DC power supply unit 83 has a power supply board 84 attached to the inner surface of each side cover part 76 of the power supply housing part 14, with the surface of the power supply board 84 on which the large power supply components 87 are mounted facing the outer surface of the housing 13.

[0049] The AC-DC power supply unit 82 arranged on the upper side and the two DC-DC power supply units 83 arranged on one of the left and right sides are electrically connected by wires wired inside the power supply accommodating space 80, and DC power converted by the AC-DC power supply unit 82 arranged on the upper side is supplied to the two DC-DC power supply units 83 arranged on one side. The AC-DC power supply unit 82 arranged on the lower side and the two DC-DC power supply units 83 arranged on the other of the left and right sides are electrically connected by wires wired inside the power supply accommodating space 80, and DC power converted by the AC-DC power supply unit 82 arranged on the lower side is supplied to the two DC-DC power supply units 83 arranged on the other side.

[0050] Next, the wiring structure within the lighting device 10 will be described.

[0051] The power input unit 33 arranged on the rear surface 21 of the housing 13 is connected by an electric wire to an input unit of a noise filter 89 arranged on the rear side inside the housing 13. The noise filter 89 reduces noise input to or output from the AC power supplied by the power cable connected to the power input unit 33.

[0052] One end of each of two power lines 90 is connected to the output portion of the noise filter 89. These power lines 90 enter the wiring passage 29 on one side from the noise filter 89 through a communication port 31 provided in one of the left and right side portions 23 of the housing 13, are wired forward along the inside of this wiring passage 29, and enter the power supply accommodating space 80 from the front end of the wiring passage 29 through the communication port 78a of the power supply housing portion 14. The two power lines 90 that have entered the power supply accommodating space 80 are wired separately above and below, and are electrically connected to AC power input portions that input AC power to the upper and lower AC-DC power supply portions 82.

[0053] A DC power output unit that outputs DC power obtained by converting AC power of the upper AC-DC power supply unit 82 and a DC power input unit of each of the two DC-DC power supply units 83 arranged on one of the left and right sides are electrically connected by electric wires wired inside the power supply accommodating space 80. Also, a DC power output unit that outputs DC power obtained by converting AC power of the lower AC-DC power supply unit 82 and a DC power input unit of each of the two DC-DC power supply units 83 arranged on the other of the left and right sides are electrically connected by electric wires wired inside the power supply accommodating space 80.

[0054] One end of the lighting power output line 92 is connected to a lighting power output unit that outputs lighting power obtained by converting the DC power of each of the two DC-DC power supply units 83 on one side, and the other end of each lighting power output line 92 enters the housing 13 through a communication port 93 provided in one side portion 23 of the housing 13 and is electrically connected to a relay terminal block 94 attached to the inner surface of the front side of the side portion 23 on one side. The relay terminal block 94 is covered with a terminal block cover 95, and the lighting power output line 92 is held by a wiring holding part 96 attached to the side portion 23 on one side in the vicinity of the relay terminal block 94. Also, one end of the lighting power output line 92 is connected to a lighting power output unit that outputs lighting power obtained by converting the DC power of each of the two DC-DC power supply units 83 on the other side, and the other end of each lighting power output line 92 enters the housing 13 through a communication port 93 provided in the other side portion 23 of the housing 13 and is electrically connected to the relay terminal block 94 attached to the inner surface of the front side of the side portion 23 on the other side. The relay terminal block 94 is covered with a terminal block cover 95 , and the lighting power output line 92 is held by a wiring holder 96 attached to the side surface portion 23 on the side adjacent to the relay terminal block 94 .

[0055] One end of two lighting power supply lines 97 is connected to the relay terminal block 94 of each of the left and right side surface parts 23. Each lighting power supply line 97 is held by a wiring holder 96 attached to the side surface part 23 near the relay terminal block 94. The lighting power supply line 97 is wired so as to bend from the relay terminal block 94 toward the bottom side inside the housing 13, wired toward the rear along the side surface part 23 on the bottom side of the housing 13, and wired toward the rear passing between the side surface part 23 and the light source part 42, enters the wiring space 65 from the side opening of the wiring part 49 of the light source part 42, and is electrically connected to the relay terminal block 66 arranged in the wiring space 65.

[0056] For the lighting power output line 92 and the lighting power supply line 97, a coaxial cable having a shield is used in order to reduce the influence of noise from the power supply unit 45.

[0057] Furthermore, the signal input unit 35 arranged on the rear surface 21 of the housing 13 and the signal input unit of the control unit of the display operation unit 38 arranged on the rear surface 21 of the housing 13 are connected by a signal line.

[0058] One end of a signal line 98 is connected to a signal output section of the control section of the display operation section 38. This signal line 98 enters the other wiring passage 29 from the control section of the display operation section 38 through a communication port 31 provided in the other side section 23 of the housing 13, is wired forward along the inside of this wiring passage 29, and enters the power supply accommodating space 80 from the front end of the wiring passage 29 through a communication port 78a of the power supply housing section 14. The signal line 98 that has entered the power supply accommodating space 80 is electrically connected to one of the four DC-DC power supply sections 83, and is connected from this one DC-DC power supply section 83 to the remaining DC-DC power supply sections 83 by a signal line that passes in sequence.

[0059] In the lighting device 10, lighting power is supplied to the light-emitting elements of the light source module 47 in the system for each color by the DC-DC power supply unit 83 in the system for each color according to the color of the light to be irradiated, and the light-emitting elements of the system for each color are lit up. The light of the lit light-emitting elements is emitted as parallel light parallel to the optical axis by the first lens of the collimator lens, and is focused by the second lens 53 toward the effective area of ​​the diffusion plate 56 facing the aperture 54. The light of each color is mixed by the diffusion plate 56 to generate a pseudo light source, and the light of the pseudo light source generated by the diffusion plate 56 is irradiated by the projection lens 57 to the illuminated object.

[0060] By covering the light source module 47, the first lens, the second lens 53, and the diffuser plate 56 with a light-shielding frame member 58 and tubular members 59 and 60, and covering the front end side of the second tubular member 60 with a light-shielding plate 61, light emitted by the light-emitting elements of the light source module 47 is prevented from leaking to the outside through the ventilation holes 27 and 28 on the top and bottom surfaces of the housing 13 and the ventilation hole 32 on the rear surface.

[0061] Furthermore, by rotating the handle serving as the adjustment unit 37, the light source unit 42 slides forward or backward by the sliding mechanism 44, changing the distance between the diffusion plate 56 that generates the pseudo light source and the projection lens 57, thereby adjusting the range of the irradiated light. In the sliding mechanism 44, when the sliding feed shaft 69 rotates by rotating the handle serving as the adjustment unit 37, the sliding feed member 71 slides forward or backward along the axial direction of the sliding feed shaft 69 via the feed member 72 that engages with the feed groove of the sliding feed shaft 69, and following the sliding of the sliding feed member 71, the sliding member that supports the light source unit 42 together slides forward or backward along the axial direction of the sliding shaft 70.

[0062] Furthermore, when the light source unit 42 slides forward or backward, the other end of the lighting power supply line 97 connected to the relay terminal block 66 of the wiring unit 49 of the light source unit 42 also moves forward or backward together.

[0063] When the light source unit 42 slides forward, the lighting power supply line 97 may bend upward and move to a region where the gap between the inner surface of the side surface 23 of the housing 13 and the light shielding plate 61 is relatively narrow. Since the light shielding plate 61 is provided with the wiring guide 62 corresponding to this region, it is possible to prevent the light shielding plate 61 moving forward or backward from getting caught on the lighting power supply line 97, and the light source unit 42 can slide smoothly.

[0064] In addition, since the ventilation holes 27, 28 of the housing 13 are arranged opposite each other above and below the heat sink 48, the air flow due to convection caused by the temperature rise of the heat sink 48 is smooth, the heat dissipation effect from the heat sink 48 is high, and the temperature rise of the light source module 47 can be suppressed.

[0065] In addition, since power supply housing unit 14 protrudes around the front end of housing 13 and the area of ​​the front side of power supply housing unit 14 is larger than the area of ​​the front side of housing 13, even when the lighting device 10 is temporarily placed on the floor with the front side of power supply housing unit 14 facing downward during installation, the posture of the lighting device 10 is stable and the lighting device 10 is prevented from falling over.

[0066] In the lighting device 10 of the present embodiment, the power supply units 45 are distributed around the four sides of the housing 13, so that the maximum amount of protrusion of the power supply units 45 from the periphery of the housing 13 can be suppressed compared to the case where the power supply units 45 are all disposed together in one place on the lower surface side of the housing 13. In other words, the amount of protrusion in any direction around the periphery when the power supply units 45 are disposed around the periphery of the housing 13 is smaller than the amount of protrusion when the power supply units 45 are all disposed together in one place on the lower surface side of the housing 13. Therefore, even in a usage situation where a plurality of lighting devices 10 are installed above and below in a studio, a stage, or the like, interference between the upper and lower lighting devices 10 can be suppressed.

[0067] In the DC-DC power supply unit 83, the power supply components 87 used are often smaller than those in the AC-DC power supply unit 82, and the protruding height of the power supply components 87 from the power supply board 86 is often also low. Therefore, by arranging the AC-DC power supply unit 82 on the top and bottom surfaces around the housing 13 and arranging the DC-DC power supply unit 83 on both left and right sides around the housing 13, the width of the lighting device 10 in the left and right direction can be reduced, and in a usage situation in which a plurality of lighting devices 10 are installed in the left and right direction in a studio, a stage, etc., interference between the lighting devices 10 can be reduced and the lighting devices 10 can be installed with a small interval between them. Note that, when it is desired to reduce the vertical height of the lighting device 10, the DC-DC power supply unit 83 may be arranged on the top and bottom surfaces around the housing 13 and the AC-DC power supply unit 82 may be arranged on both left and right sides around the housing 13.

[0068] In addition, a wiring passage 29 is provided on the surrounding surface of the housing 13, extending from the rear side of the housing 13 to the power supply unit 45, so that AC power can be supplied to the power supply unit 45 located on the front side of the housing 13 via a power line 90 wired along this wiring passage 29.

[0069] Furthermore, a signal can be sent to the power supply unit 45 arranged on the front side of the housing 13 via a signal line 98 wired along the wiring passage 29 .

[0070] Furthermore, by arranging the DC-DC power supply unit 83 on both the left and right sides around the periphery of the housing 13, it is possible to easily wire the lighting power supply line 97 connecting the DC-DC power supply unit 83 and the wiring unit 49 of the light source unit 42 along the side surface units 23 on both the left and right sides of the housing 13. This prevents the lighting power supply line 97 from blocking a portion of the ventilation holes 27, 28 on the top and bottom surfaces of the housing 13, and improves the heat dissipation performance of the heat sink 48 of the light source unit 42.

[0071] Alternatively, the AC-DC power supply unit 82 may be arranged on one of the top and bottom and one of the left and right sides, and the DC-DC power supply unit 83 may be arranged on the other top and bottom and the other left and right side.

[0072] Furthermore, when the configuration is simplified or the size is reduced, such as when emitting light of a single color, power supply unit 45 may be provided on only two surfaces, the top and bottom surfaces or the left and right sides, around housing 13.

[0073] Although the power supply unit 45 is disposed outside the periphery of the housing 13, it may be disposed inside the periphery of the housing 13. In this case, the power supply unit 45 is disposed at a position that does not block the optical path between the diffusion plate 56 and the projection lens 57.

[0074] In addition, the two power supply lines 90 are wired together in the wiring passage 29 on one side of the housing 13, and the signal line 98 is wired in the wiring passage 29 on the other side, but the two power supply lines 90 may be wired separately in the wiring passage 29 on one side of the housing 13 and the wiring passage 29 on the other side.

[0075] Although some 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 implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and spirit of the invention, and are included in the scope of the invention and its equivalents described in the claims. [Explanation of symbols]

[0076] 10. Lighting Equipment 13. Cabinet 29 Wiring passage 42 Light source section 45 Power supply section 47 Light source module, which is a light source 63 Covering material 65 Wiring space 66 Junction terminal block 82 AC-DC power supply section 83 DC-DC power supply section 90 Power line 97 Lighting power supply line 98 Signal Line

Claims

1. A rectangular parallelepiped housing from which light is emitted from the front side; a light source disposed within the housing; a power supply unit arranged on at least two opposing sides of a periphery intersecting the front-rear direction of the housing, the power supply unit supplying lighting power to the light source; A lighting device comprising:

2. The power supply unit is disposed on four sides of the periphery of the housing.

2. The lighting device according to claim 1 .

3. The power supply unit includes an AC-DC power supply unit that is disposed on two opposing sides of the periphery of the housing and converts AC power into DC power, and a DC-DC power supply unit that is disposed on two opposing sides of the periphery of the housing different from the two opposing sides on which the AC-DC power supply units are disposed and converts the DC power converted by the AC-DC power supply unit into the lighting power.

3. The lighting device according to claim 2.

4. The power supply unit is disposed on a front side of the periphery of the housing, The housing has a wiring passage provided on at least one surface around the housing, the wiring passage extending from the rear side of the housing to the power supply unit, and a power line is wired in the wiring passage from the rear side of the housing to the power supply unit.

2. The lighting device according to claim 1 .

5. A signal line is wired through the wiring passage from the rear side of the housing to the power supply unit.

5. The lighting device according to claim 4.

6. a light source unit including a heat sink, the light source disposed on the front side of the heat sink, a wiring space provided below the heat sink on the front light source side and having an upper surface covered by a cover member, and a relay terminal block disposed in the wiring space and electrically connected to the light source, A lighting power supply line for supplying the lighting power from the power supply unit is connected to the relay terminal block through the wiring space.

2. The lighting device according to claim 1 .

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