Luminaire

Abstract

To provide a structure in which a member such as a waterproof member can be provided in a hole for passing wires of a luminaire.SOLUTION: A luminaire comprises: a light source part; wires 1221 for supplying electric power to the light source part; a plate-like base part 111 comprising a convex part 114 raised in a direction opposite to an arrangement surface on which the light source part is arranged, so as to form a space 1141 between the light source part and the arrangement surface, and in which a through hole 115 through which the wires pass is formed; and wire passage packing 116 in which a wiring hole 117 through which the wires are made to penetrate is formed, and partially housed in the space.SELECTED DRAWING: Figure 29

Description

[Technical Field]

[0001] The present invention relates to a lighting fixture. [Background technology]

[0002] Patent Document 1 shows a lighting fixture in which a light source unit is mounted on a heat sink, a power supply unit is provided above the heat sink, and the light source unit and the power supply unit are connected by a cord. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2017-126458 Summary of the Invention [Problem to be solved by the invention]

[0004] The lighting fixture described in Patent Document 1 has a configuration in which a light source unit mounted on the heat sink and a power supply unit installed above the heat sink are connected by a cord through a wiring portion provided on the heat sink. However, the wire-passing section of the heat sink is a hole in the flat section, and since the light source section and the heat sink are in close contact with each other, it was difficult to place a member between the hole for passing the wire and the light source section.

[0005] The present invention provides a configuration in which a member such as a waterproof member can be provided in a hole for passing a wire through. [Means for solving the problem]

[0006] The lighting fixture of the present invention comprises: A light source unit; Wiring for supplying power to the light source unit; a base portion having an arrangement surface on which the light source unit is arranged, the base portion being a plate-like portion having a convex portion that rises in a direction opposite to the arrangement surface to form a space between the light source unit and the arrangement surface and that has a through hole through which the wiring passes; a wiring packing having a wiring hole formed therein through which the wiring passes, and a portion of the packing being accommodated in the space; Equipped with: [Effects of the Invention]

[0007] According to the present invention, the convex portion having the through hole is provided on the opposite side of the base portion from the surface on which the light source portion is disposed, so that a member such as a waterproof member can be provided in the through hole of the convex portion. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a perspective view of a lighting fixture according to a first embodiment. [Figure 2] FIG. 1 is an exploded perspective view of a lighting fixture according to a first embodiment. [Figure 3] FIG. 1 is an exploded perspective view of a lighting fixture according to a first embodiment. [Figure 4] FIG. 2 is a perspective view of a heat sink 110 of the lighting fixture according to the first embodiment. [Figure 5] 3 is a perspective view of a connecting portion 130 of the lighting fixture according to the first embodiment. FIG. [Figure 6] FIG. 2 is a perspective view of a reinforcing portion 140 of the lighting fixture according to the first embodiment. [Figure 7] 10 is a reference diagram showing how a reinforcing portion 140 is attached to a heat sink 110 of the lighting fixture according to the first embodiment. FIG. [Figure 8] 10 is a reference diagram showing how a connecting portion 130 is attached to a heat sink 110 of the lighting fixture according to the first embodiment. FIG. [Figure 9] FIG. 2 is an exploded perspective view of a case 123 of the lighting fixture according to the first embodiment. [Figure 10] 3 is a cross-sectional view of the lighting fixture according to the first embodiment taken along the line BB in FIG. 2. [Figure 11] FIG. 1 is a perspective view of an appliance mounting bracket 200 according to a first embodiment. [Figure 12]1 is a diagram showing a state in which the lighting fixture according to the first embodiment is attached to the fixture mounting bracket 200. FIG. [Figure 13] 10 is a diagram showing a modified example of the case body 1231 of the power supply unit 120 for the lighting fixture according to the first embodiment. FIG. [Figure 14] FIG. 2 is a perspective view of a wiring through portion 119 of the lighting fixture according to the first embodiment. [Figure 15] 3 is a schematic side view of a sheet 170 of the lighting fixture according to the first embodiment. FIG. [Figure 16] 3 is a cross-sectional view of a cover 160 of the lighting fixture according to the first embodiment. FIG. [Figure 17] 3 is a diagram of a bent portion 1111 of a base portion 111 and a bent portion 1131 of a top plate portion 113 of the lighting fixture according to the first embodiment. FIG. [Figure 18] 3 is a diagram of a bent portion 1131 of a top panel portion 113 of the lighting fixture according to the first embodiment. FIG. [Figure 19] 3 is a diagram of a bent portion 1111 of a base portion 111 of the lighting fixture according to the first embodiment. FIG. [Figure 20] 1 is a perspective view of a connecting portion 130 having enhanced vibration resistance in the lighting fixture according to the first embodiment. FIG. [Figure 21] FIG. 2 is a partial perspective view of a cover 161 and a cover packing 162 of the lighting fixture according to the first embodiment. [Figure 22] FIG. 10 is a perspective view of a lighting fixture according to a second embodiment. [Figure 23] FIG. 10 is a side view of a lighting fixture according to a second embodiment. [Figure 24] FIG. 10 is an exploded perspective view of a lighting fixture according to a second embodiment. [Figure 25] 10A and 10B are a perspective view and a side view of a heat sink 110 of a lighting fixture according to a second embodiment. [Figure 26] FIG. 10 is a mounting diagram of a base portion 111 of a lighting fixture according to a second embodiment. [Figure 27] 10A and 10B are three-view and perspective views of an insulating sheet 172 of a lighting fixture according to a second embodiment. [Figure 28] 10A and 10B are diagrams showing modified examples of the bent portion 1111 of the base portion 111 according to the second embodiment. [Figure 29] FIG. 11 is a diagram showing a wiring through portion 119 of a lighting fixture according to a second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In each drawing, the same or corresponding parts are designated by the same reference numerals. In the description of the embodiments, the description of the same or corresponding parts will be omitted or simplified as appropriate. Furthermore, the materials, shapes, sizes, etc. of the configurations of devices, instruments, parts, etc. may be changed as appropriate within the scope of the present invention.

[0010] Embodiment 1 The configuration of the lighting fixture according to the first embodiment will be described with reference to the drawings. ***Configuration Description*** Figure 1 (Lighting fixture 1) FIG. 1 is a perspective view of a lighting fixture 1 that is attached to the ceiling of a facility with a high ceiling, such as a gymnasium. The lighting fixture 1 includes an arm 10 attached to a mounting portion, and a light source unit 100 held by the arm 10 so as to be rotatable.

[0011] ●Figures 2 to 4 FIG. 2 is an exploded perspective view of the lighting fixture 1 of FIG. FIG. 3 is an exploded perspective view of the lighting fixture 1 as seen from the direction of arrow A in FIG.

[0012] The lighting fixture 1 includes an arm 10 and a light source unit 100. The light source unit 100 includes a heat sink 110 , a power supply unit 120 , a connecting portion 130 , a reinforcing portion 140 , a light source portion 150 , a cover portion 160 , and a sheet 170 .

[0013] (Arm 10) The arm 10 is formed in a substantially U-shape, and has a mounting hole 11 formed therein for fastening to a mounting portion with a fastener (such as a bolt).

[0014] (heat sink 110) FIG. 4 is a perspective view of the heat sink 110. The heat sink 110 has a plate-shaped base portion 111 to which the light source portion 150 is attached, multiple fin portions 112 arranged radially on the base portion 111, and a top plate portion 113 attached to cover the fin portions 112. The base portion 111 and the top plate portion 113 are mounting members in the form of square or rectangular plates.

[0015] 4, the base portion 111 and the top plate portion 113 are squares with a side length of L, and have arcs at the corners with an interior angle of 90 degrees and a radius of R. The length of the straight line portion of each of the four sides of the base portion 111 and the top plate portion 113 is M, and L = M + 2R.

[0016] The base portion 111 has four screw holes 1119 at the corners and one screw hole 1118 at the center of each side. The screw holes 1118 are located closer to each side than the screw holes 1119 to avoid contact with the fin portions 112.

[0017] The top panel 113 has four screw holes 1139 at the corners and two screw holes 1119 in the center of each side. The base portion 111 and the top plate portion 113 have a plurality of holes on the inside for fixing the fin portion 112 thereto. The base portion 111 and the top plate portion 113 are arranged apart from each other with the fin portion 112 therebetween.

[0018] The lower part of the fin part 112 is fixed to the base part 111 , and the upper part of the fin part 112 is fixed to the top plate part 113 . The upper and lower ends of the outer periphery of the fin portion 112 have notches 1121 to prevent interference with other parts and screws. The heat sink 110 may be composed of only the base portion 111.

[0019] In this embodiment, the fin portion 112 is a metal plate bent into a U-shape, but it may be a metal plate bent into an L-shape or an I-shape. Furthermore, the fin portion 112 is not limited to being made of sheet metal, but may be manufactured by aluminum extrusion molding or aluminum die-cast molding, and the base portion 111 and the fin portion 112 may be integrated.

[0020] (Power supply unit 120) The power supply unit 120 receives power from an external source and supplies the power to the light source unit 150 to light it up. The power supply unit 120 includes a lighting circuit section 121 that converts external power into power for lighting the light source section 150, a harness 122 that connects the lighting circuit section 121 and the light source section 150 and supplies power to the light source section 150, and a case section 123 that is attached to the top panel section 113 so as to cover the lighting circuit section 121. Two wires 1221 are provided at the end of the harness 122. The lighting circuit section 121 has a power supply board 1222 on which the lighting circuit is mounted.

[0021] (Connection part 130) The connecting portions 130 are disposed on both opposing side surfaces of the heat sink 110, and the arms 10 are attached to the connecting portions 130.

[0022] (reinforcement portion 140) The reinforcing portion 140 has a U-shaped cross section and is attached so as to cover the side of the base portion of the heat sink 110. The reinforcing portion 140 supplements the strength of the heat sink 110 .

[0023] (Light source part 150) The light source section 150 includes a light source substrate 151 on which a plurality of light emitting elements are mounted as light sources, and a lens section 152 attached to cover the light source substrate 151 and controlling the light from the light emitting elements to a predetermined light distribution. The light source unit 150 is thermally connected to a base unit 111 that serves as a mounting member. The lens section 152 is provided with a plurality of lenses in accordance with the light emitting elements.

[0024] (Cover part 160) The cover portion 160 transmits light from the light source portion 150 . The cover unit 160 includes a cover 161 attached to the base unit 111 so as to cover the light source unit 150 , and a cover packing 162 sandwiched between the cover 161 and the base unit 111 . The cover 161 has a box-shaped main cover 1611 with one side open, and a cover flange 1612 provided so as to protrude from the edge of the opening of the main cover 1611 . The cover packing 162 has an opening in the center and is provided so as to be pressed between the cover flange 1612 and the base portion 111 .

[0025] ●Figures 5 to 8 The connecting portion 130 and the reinforcing portion 140 will be described with reference to FIGS. FIG. 5 is a perspective view of the connecting portion 130. As shown in FIG. FIG. 6 is a perspective view of the reinforcing portion 140. As shown in FIG. FIG. 7 is a reference diagram showing how the reinforcing portion 140 is attached to the heat sink 110. As shown in FIG. FIG. 8 is a reference diagram showing how the connecting portion 130 is attached to the heat sink 110. As shown in FIG.

[0026] (Connection part 130) The connecting portion 130 has a rectangular shape, a width of L, and a height that is the same as or approximately the same as the height of the heat sink 110. The connecting portion 130 has a rectangular connecting main portion 131 having a connecting opening 1311, a top plate side protruding portion 132 protruding from the upper side of the connecting main portion 131, a base side protruding portion 133 protruding from the lower side of the connecting main portion 131, and a pair of lateral protruding portions 134 protruding from both side sides of the connecting main portion 131.

[0027] The connecting main portion 131 has a window frame shape. The connecting main part 131 is a flat plate and has a connecting opening 1311 , a pillar part 1312 , a central pressing part 1313 which serves as a holding part, frame side parts 1314 , a frame lower part 1315 and a frame upper part 1316 . The connecting opening 1311 is provided so as not to interfere with the heat dissipation of the fin portion 112 (so as not to interfere with the flow of air in and out).

[0028] The pillar portion 1312 is provided with a connection hole 13121 for connecting the arm 10 with a fixing tool such as a screw.

[0029] The central pressing portion 1313, together with the base-side protruding portion 133, is a holding portion that sandwiches and holds the cover flange portion 1612, the cover packing 162, and the base portion 111. The central pressing portion 1313 has a holding hole portion 13131 into which a cover fixing tool 169 such as a screw is screwed and fixed.

[0030] The top plate side protrusion 132 has a rectangular shape with a width L and a depth R, and abuts against the side of the top plate 113 where the fins 112 are located (the lower surface side) to hold the heat sink 110.

[0031] The base side protrusion 133 has a rectangular shape with a width of L, a depth of R at both ends and a depth at the center that is greater than R, and abuts against the cover flange 1612 of the cover 160 to hold the cover 160 in place.

[0032] The lateral protrusion 134 has a rectangular shape, with an upper depth of R and a depth that gradually increases toward the bottom, with the depth at the bottom being 2R or more. The side protrusions 134 have side pressing portions 1341 that come into contact with the reinforcing portions 140 in order to improve the strength of the connecting portion 130 . The side pressing portion 1341 has a pressing notch portion 13411 that abuts against the tubular hole portion 141 described below. The pressing notch portion 13411 is a semicircular or C-shaped notch that has an opening inward perpendicular to the main connecting portion 131. The lower frame portion 1315 and the upper frame portion 1316 are the same height. The distance between the central pressing portion 1313 and the base side protruding portion 133 is the same as the height of the frame lower portion 1315 , and is the same as the combined thickness of the cover flange portion 1612 and the base portion 111 .

[0033] (reinforcement portion 140) The reinforcing portion 140 has a U-shaped cross section and a width of M. The reinforcing portion 140 has an upper plate 147 , a back plate 148 , and a lower plate 149 . The reinforcing portion 140 is attached to the base portion 111 so as to sandwich the cover flange portion 1612, the cover packing 162, and the base portion 111 therebetween.

[0034] The distance between the upper plate 147 and the lower plate 149 is the sum of the thickness of the cover flange 1612 and the thickness of the base portion 111 .

[0035] The reinforcing portion 140 is provided with a cylindrical hole portion 141 and a reinforcing hole portion 142 so that it can be fixed to the base portion 111 together with the cover portion 160 and the like by a cover fixing tool 169 such as a screw. The reinforcing portion 140 has a sloped portion 143 at the tip, making it easier to insert. By attaching the reinforcing portion 140 to the base portion 111, the rigidity of the base portion 111 is improved, and the rigidity of the heat sink 110 is also improved. The reinforcing portion 140 has a function and effect similar to that of a beam, and by being provided between the two connecting portions 130, it suppresses the deflection of the heat sink 110.

[0036] Figures 9 and 10 The case 123 of the power supply unit 120 will be described with reference to FIGS. FIG. 9 is an exploded perspective view of the case portion 123. As shown in FIG. FIG. 10 is a cross-sectional view of the case portion 123 taken along the line BB shown in FIG.

[0037] The case portion 123 includes a case body 1231 , a case packing 1232 , and a bushing 1233 . The case body 1231 is formed by pressing a plate-shaped metal member from one direction (direction C in Figure 9), and is integrally formed with a box-shaped main case portion 12311 with one open side, a step portion 12312 in which the case gasket 1232 is housed, and a case flange portion 12313 that abuts against the top plate portion 113 and is fixed with a case fixing device 129 such as a screw.

[0038] Case packing 1232 is made of a resin material having elastic properties such as rubber, and is pressed and housed between step portion 12312 and top plate portion 113. By being pressed and housed, case packing 1232 improves the sealing performance of the inside of case main body 1231 and can prevent the intrusion of water and the like.

[0039] The case body 1231 can be thinner and lighter than a cast case, thereby reducing the weight of the lighting fixture 1. In addition, the rigidity of the thinner case can be compensated for by providing multiple steps (steps formed by the main case portion 12311, step portion 12312, and case flange portion 12313).

[0040] Furthermore, when case body 1231 is formed by bending a cross-shaped metal plate, the ends of the bent plate are not connected to each other. This creates gaps that can allow water or other contaminants to seep in. Furthermore, when a load is applied, there is a risk that the unconnected ends will deform, but by forming them as a single unit, these concerns can be alleviated.

[0041] Furthermore, the case flange 12313 is provided around the entire periphery of the step 12312, and can press against the case packing 1232 all around, thereby ensuring better sealing performance.

[0042] Figures 11 and 12 11 and 12, a fixture mounting bracket 200 for fixing the lighting fixture 1 to a mounting portion will be described.

[0043] FIG. 11(a) is a perspective view of the appliance mounting bracket 200. FIG. FIG. 12 is a diagram showing the lighting fixture 1 attached to the fixture mounting bracket 200 of FIG. 11(a). The fixture mounting bracket 200 is used to mount the lighting fixture 1 to a mounting base 900 having a vertical surface such as a wall.

[0044] The fixture mounting bracket 200 in Figure 11 (a) comprises a fixture mounting portion 210 to which the lighting fixture 1 is attached, a bracket leg portion 220 that secures the fixture mounting bracket 200 to the mounting portion, a bracket body portion 230, and a bracket waist portion 240.

[0045] The metal fitting legs 220 are located on both sides of the fixture mounting bracket 200 and have a wall mounting portion 221 and a side portion 222 . The wall mounting portion 221 is a flat plate portion that is fixed to the vertical surface of the mounting portion 900 by metal fixtures 901 such as screws. The side surface portion 222 is a plate portion in the shape of a right triangle that is perpendicular to the wall surface mounting portion 221, and has a curved portion 223 on the hypotenuse.

[0046] The metal fitting waist portion 240 is a rectangular flat plate portion having a pair of side portions 222 at both ends. The metal fitting waist portion 240 has a wire hole 241 in the center for passing the wire through. The metal body portion 230 is a rectangular flat plate portion that is perpendicular to the metal waist portion 240 . The appliance mounting portion 210 is a rectangular flat plate portion that intersects with the metal fitting body 230 at an obtuse angle.

[0047] 12, the tool attachment portion 210 intersects with the metal part 230 at an angle of 150 degrees, and the tool attachment portion 210 attaches the arm 10 at an angle of 30 degrees relative to the horizontal plane. The arm 10 can be attached at an angle of 60 degrees relative to the vertical plane.

[0048] The fixture mounting portion 210 is provided with a fixture fixing hole 211 into which a fixing tool such as a bolt for fixing the lighting fixture 1 is attached.

[0049] This instrument fixing hole 211 is provided so that two openings of different sizes are connected to one another, with the larger hole on the upper side and the smaller hole on the lower side. Because the instrument fixing hole 211 has such a shape, after first temporarily fixing the bolt 291 and nut 292, which are fixing devices, to the mounting hole 11 of the arm 10, the head of the bolt can be inserted into the larger diameter hole of the instrument fixing hole 211 and then slid into the smaller diameter hole (lower).

[0050] That is, the head of the bolt temporarily fixed to the arm 10 can be hooked into the fixture fixing hole 211, and after the temporary fixing, the bolt and nut 292 can be tightened, making the installation easier.

[0051] Furthermore, when viewed from the side, a gap 250 is formed between the appliance mounting part 210 and the fixture leg part 220. This gap 250 makes it possible to insert a tool horizontally from the side into the inside of the appliance mounting fixture 200 when fastening a fastener, making the work easier (the worker does not have to reach behind).

[0052] In addition, an arc-shaped curved portion 223 is formed on the side of the metal fitting leg portion 220 in FIG. 11(a), forming a gap 250 so that a tool can be inserted from the side.

[0053] Furthermore, by having the metal fitting body 230, even if the fastening between the bolt 291 and the nut 292 loosens and the lighting fixture 1 attempts to move, the head of the bolt interferes with the metal fitting body 230, thereby preventing the movement. FIG. 11(b) shows a modified example of the appliance mounting bracket 200. The appliance mounting bracket 200 in FIG. 11(b) includes an appliance mounting portion 210 and a bracket leg portion 220. The fixture mounting bracket 200 in FIG. 11(b) has a fixture leg 220 in the shape of a right triangle. The side surface portion 222 and the tool mounting portion 210 are connected by being bent at a 90-degree crossing angle at a straight portion 224. A rectangular window 225 is formed in the side surface portion 222, and the window 225 forms a gap 250 that allows a tool to be inserted from the side.

[0054] ●Figure 13 FIG. 13 shows a modified example of the case body 1231 of the power supply unit 120, and the case body 1231 may be cylindrical rather than box-shaped.

[0055] ●Figure 14 (Convex portion 114 of base portion 111 of heat sink 110 and packing structure) As shown in FIG. 14, the base portion 111 of the heat sink 110 is plate-shaped. The base portion 111 is made of, for example, an aluminum plate, but may also be made of metal other than aluminum, such as stainless steel or iron.

[0056] As shown in FIG. 14( a ), the base portion 111 has a wiring penetration portion 119 . The wiring penetration portion 119 has a convex portion 114 and a packing 116 for passing wiring. The convex portion 114 is a wire-carrying portion. The convex portion 114 is formed in a convex shape facing in the opposite direction to the direction in which the light source substrate 151 is installed. The convex portion 114 has a through hole 115 for passing a wiring 1221 for supplying power from the lighting circuit portion 121 to the light source. A packing 116 for passing wires is fitted into the through hole 115 of this convex portion 114 .

[0057] The wire packing 116 prevents water and moisture from entering through the through-hole 115 through which the wire 1221 passes. The wire-passing packing 116 is made of silicone rubber, fluororubber, etc. By providing the wire-passing packing 116 on the convex portion 114 in this way, it is possible to stop water. The wire-passing packing 116 has one or more wiring holes 117 for passing the wires 1221 therethrough. The packing 116 for wiring passes a wire 1221 having an outer diameter equal to or larger than the hole diameter of the wiring hole 117 through the wiring hole 117 .

[0058] The packing 116 for passing wires has the same number of wiring holes 117 as the number of wires 1221, and each wiring hole 117 passes only one wire. In addition, the inside of wiring hole 117 is provided with unevenness, which is shaped to prevent water and moisture from getting in. Furthermore, by making the outer shape of wire-passing packing 116 approximately the same as the inner shape of convex portion 114 of base portion 111, it is possible to reduce gaps when wire-passing packing 116 is attached to through-hole 115 of base portion 111.

[0059] As shown in FIG. 14(b), the wire-passing packing 116 of the wire-through portion 119 has a protrusion 118. The protruding portion 118 is a part of the wire-passing packing 116, and is a portion that protrudes from the base portion 111 of the heat sink 110 toward the side where the light source substrate 151 is located. The protrusion 118 is inserted into the substrate hole 153 of the light source substrate 151 . The protruding portion 118 has a protruding shape that corresponds to the board hole 153 of the light source board 151. In this embodiment, the protruding shape of the wire-passing packing 116 is an oval convex shape. As shown in FIG. 14(c), the substrate hole 153 of the light source substrate 151 may be an oval or elliptical hole, or may be a circle, a rectangle, a polygon, or any other shape. As shown in (d) and (e) of FIG. 14, instead of the substrate hole 153, the protrusion 118 may be inserted into a substrate cutout portion 154 formed by cutting out an end portion of the light source substrate 151. The substrate cutout portion 154 in FIG. 14(d) is formed by cutting out a semicircular portion in the center of one side of the light source substrate 151. The substrate cutout portion 154 in FIG. 14(e) is formed by cutting out a protruding corner of the light source substrate 151 in a straight line.

[0060] By configuring the shape of the wire-passing gasket 116 to be thicker than the thickness of the light source board 151, it becomes possible to connect the wiring 1221 to the connection part (connector) of the light source board 151 without the wiring 1221 touching the edge of the board hole 153 of the light source board 151. The light source substrate 151 has an oval substrate hole 153 near the outer diameter of the substrate, allowing the wiring 1221 to pass through.

[0061] This makes it possible to route the wiring 1221 to the outside without increasing the outer diameter of the light source substrate 151, and makes it possible to implement a wiring design without increasing the size of the lighting fixture.

[0062] According to the configuration shown in Figure 14, even if the light source unit 150 and the heat sink 110 are in close contact with each other, a convex portion 114 having a through hole 115 is provided on the side of the base portion 111 opposite to the surface on which the light source unit 150 is placed, so that a member such as a waterproof member can be provided in the through hole 115 of the convex portion 114.

[0063] The convex portion 114 of the wiring through portion 119 can be formed at any position on the base portion 111, and the shape of the convex portion 114 is also free.

[0064] In this way, the layout of the wiring penetration part 119 can be easily changed, and restrictions on component placement can be eliminated while keeping the light source part 150 and the heat sink 110 in close contact, making it possible to miniaturize the fixture. In other words, it is possible to route wiring without increasing the fixture size, and it is possible to provide a waterproof structure.

[0065] Furthermore, the through hole 115 of the convex portion 114 functions as a space between the light source portion 150 and the base portion 111, and by providing the through hole 115 (space) between the light source portion 150 and the base portion 111 and arranging a wire-passing gasket 116, which serves as a waterproof member, in the space between the light source portion 150 and the base portion 111, it is possible to easily ensure waterproof performance.

[0066] That is, according to the configuration shown in FIG. 14, it is possible to route the wiring without increasing the size of the device, and it is possible to provide a waterproof structure.

[0067] ●Figure 15 (heat sink 110 and sheet 170 of light source substrate 151) The light source unit 150 is disposed on the opposite side of the base unit 111 of the heat sink 110 from the fin unit 112 .

[0068] The light source section 150 is configured by a light source substrate 151, a light source disposed on the light source substrate 151, and a connection section (connector). The light source substrate 151 is made of aluminum, composite substrate epoxy resin (CEM3), glass cloth substrate epoxy resin (FR-4), paper phenol, or the like. If heat dissipation performance is required, the light source substrate 151 is preferably made of aluminum.

[0069] On the other hand, when the light source substrate 151 is made of aluminum, it is preferable to provide an insulator between the base portion 111 of the heat sink 110 and the light source substrate 151 in order to ensure insulation performance.

[0070] In this case, it is preferable to provide a heat dissipation sheet having insulating properties.

[0071] If heat dissipation capability is not required, an insulating sheet such as a polyethylene terephthalate (PET) sheet or a polycarbonate (PC) sheet may be provided. Generally, heat dissipation sheets are made by blending various materials, and are therefore more expensive than insulating sheets.

[0072] As shown in FIG. 15, sheet 170 of this embodiment uses two types of sheets: heat dissipation sheet 171 which serves as a heat conduction sheet, and insulating sheet 172. FIG. 15 is a schematic diagram showing the thickness of the heat dissipation sheet 171 and the insulating sheet 172 in an enlarged manner.

[0073] As shown in FIG. 15(a), one of the two types of sheets may be entirely overlapped with the other. In order to ensure an insulating distance from the outer casing of the light source substrate 151 to the heat sink 110, the sheet 170 is provided with a heat dissipation sheet 171 having approximately the same shape as the light source substrate 151 and an insulating sheet 172 that overlaps the heat dissipation sheet 171 when viewed from the light emitting surface of the light source unit.

[0074] As shown in FIG. 15(b), the insulating sheet 172 may be formed in an annular, loop, or ring shape, with one of the two types of sheets entirely overlapping with a portion of the other sheet. Since insulating sheet 172 has a lower thermal conductivity than heat dissipation sheet 171, it is preferable that the overlapping portion with heat dissipation sheet 171 be as small as possible. Therefore, insulating sheet 172 is preferably in a substantially ring shape with an opening in the center.

[0075] As shown in FIG. 15(c), the insulating sheet 172 may be formed in an annular, loop, or ring shape, with part of one of the two types of sheets overlapping part of the other sheet. At least a portion of insulating sheet 172, ie, the inner edge of insulating sheet 172, overlaps with at least a portion of heat dissipation sheet 171, ie, the outer edge of heat dissipation sheet 171. At least a part of the insulating sheet 172, that is, the outer edge of the insulating sheet 172, does not overlap with the heat dissipation sheet 171 and is disposed outside the heat dissipation sheet 171.

[0076] 15(d), the insulating heat dissipation sheet 171 may be circular and smaller than the light source substrate 151, and the insulating sheet 172 may be annular, annular, or ring-shaped, and the insulating sheet 172 may be disposed outside the heat dissipation sheet 171 without overlapping the heat dissipation sheet 171. This makes it possible to ensure an insulating distance from the outer periphery of the light source substrate 151 to the heat sink 110.

[0077] Furthermore, if there is a gap at the boundary between the heat dissipation sheet 171 and the insulating sheet 172, there is a possibility that an electrical path may be formed through that gap. Therefore, it is possible to ensure insulation performance by increasing the thickness of the sheet or by stacking the sheets to ensure a predetermined distance (required insulation distance).

[0078] Sheet 170 in FIG. 15 uses two types of sheets, thereby achieving both heat dissipation performance and insulation performance without increasing costs. 15, it is possible to ensure an insulating distance from the edge of the board while ensuring heat dissipation performance. In addition, by providing insulating sheet 172 while reducing the size of heat dissipation sheet 171, which has insulating performance, it is possible to ensure an insulating distance, which is also effective as a surge countermeasure, and it is possible to ensure a predetermined insulating performance with an inexpensive configuration.

[0079] ●Figure 16 (Configuration of cover part 160: film insert) A cover portion 160 for protecting the light source is disposed on the light source side of the base portion 111 of the heat sink 110. The cover portion 160 is made of resin such as PC or polymethyl methacrylate resin (PMMA), or a metal member such as aluminum die-cast, and glass. The material of the cover portion 160 can be changed as appropriate depending on the usage environment.

[0080] For example, in a high-temperature environment or an environment where oil is present, if the cover part 160 is made of PC or PMMA resin, the heat resistance temperature or the attack of the oil may cause the resin to melt, deteriorate, or crack, so it is preferable to make the cover part 160 out of metal members and inorganic materials such as glass.

[0081] On the other hand, if metal members and glass are used for the cover portion 160, the specific gravity is higher than that of resin, so the product weight becomes heavy. In addition, it is difficult to form the shape as a single unit like with resin, and there are issues such as poor assembly due to the increased number of parts and increased costs.

[0082] Therefore, in this embodiment, as shown in FIG. 16(a), the cover 161 of the cover unit 160 is made up of a main body unit 1601 and a film 1602. When the main body 1601 of the cover 161 of the cover part 160 is made of a resin such as PC or PMMA, a resin film 1602 made of a material other than PC or PMMA is integrally molded over the entire outer surface of the main body 1601 . By molding resin film 1602 integrally over the entire outer surface of main body 1601, it is possible to compensate for weak parts of the main resin that constitutes cover 160.

[0083] For example, by using a film 1602 made of a material such as PET or polyethylene naphthalate (PEN), even in an environment where it is difficult to use PC or PMMA in the presence of various chemical substances such as oil or chemicals, the barrier properties of the film 1602 integrally molded into the outer shell make it possible to use the resin cover portion 160 without affecting the main resin. Specifically, since polycarbonate is susceptible to oil, an oil-resistant film is provided on the outside.

[0084] The cover 161 may be provided with different types of films 1602 depending on the parts of the outer shell, such as heat-resistant films, oil-resistant films, reinforced films, polarizing films, diffusion films, color films, and reflective films. As shown in FIGS. 16(a), (b), and (c), the cover 161 has different types of films 1602, 1603, and 1604 arranged on the underside of the main body 1601, the sides of the main body 1601, and the underside of the cover flange 1612. As shown in FIG. 16(d), films 1602 and 1603 may be provided on the lower and upper surfaces of a main body 1601 of a cover 161. As shown in FIG. 16(e), two or more different types of films 1602 and 1603 may be arranged on the underside of the main body 1601 of the cover 161 in a fully layered or partially layered manner.

[0085] Specifically, the following configurations and combinations thereof are possible: A reinforced film is provided on the inner surface, outer surface, or both surfaces of the cover flange 1612. - Reinforced film is placed on the corners of the main cover. - Reinforced film is placed on the underside of the main cover. - Reinforced film is placed on the sides of the main cover. -Reflective film is placed on the side of the main cover. -Heat-resistant or oil-resistant film is provided on the outer surface of the main cover. -Polarizing film, diffusion film or color film is arranged on the inside of the main cover. According to the configuration of FIG. 16, different types of films are arranged depending on the area of ​​the cover 161, so that it is possible to provide protection suited to the area of ​​the cover 161.

[0086] By imparting optical properties to the film 1602, it is possible to give it the function of changing the direction of light and also the function of controlling light distribution at the same time. Methods of imparting optical properties to the film 1602 include blending a diffusing material, pigment, or dye into the film 1602, arranging a geometric pattern, controlling light distribution by changing the cross-sectional shape, etc.

[0087] This makes it possible to easily ensure performance suited to the intended use of the lighting fixture by changing film 1602 without changing the main resin of cover portion 160.

[0088] In addition, in this embodiment, the lens of lens unit 152 is arranged above the light source of light source substrate 151, but the lens may be formed integrally with the inner surface of main body 1601 of cover unit 160.

[0089] According to the configuration of FIG. 16, it is possible to compensate for the weak physical properties of the basic resin by disposing a film on the outer periphery of the molded product without carrying out coating or two-color (multi-color) molding.

[0090] Figure 2 (Waterproofing by packing of heat sink 110 and cover part 160) As shown in FIG. 2, the cover 161 has a main cover 1611 that covers the light source unit 150, and a cover flange 1612 that is fixed to the base unit.

[0091] The cover packing 162 is a waterproof member that is fixed in close contact with the cover flange 1612 and the base portion 111 . The cover packing 162 is a watertight packing having an annular shape that fits along the cover flange 1612 .

[0092] The base portion 111 and the cover portion 160 of the heat sink 110 are fixed together by a cover fixing member 169, which is a fastening member such as a screw, and the reinforcing portion 140. If the cover packing 162 is not provided, the cover fastener 169 fastens the cover 161 to the base portion 111 . The base portion 111 and the cover portion 160 are fixed together by a cover fixing tool 169, and the reinforcing portion 140 may not be necessary to fix the base portion 111 and the cover portion 160 together.

[0093] If the cover packing 162 is present, the cover fixing device 169 brings the cover packing 162 into close contact between the base portion 111 and the cover 161 , thereby fixing the cover 161 to the base portion 111 .

[0094] Normally, when lighting fixtures are used indoors, there are no particular problems with a structure that fixes them with fastening members such as screws. However, when lighting fixtures are used under the eaves or on the roof side, water or moisture may get in due to rain, and if there are gaps between parts, there is a concern that water may get in, causing poor insulation or rusting of parts.

[0095] Therefore, in this embodiment, intrusion of water and moisture is prevented by disposing cover packing 162 between base portion 111 (plate-shaped mounting member) of heat sink 110 and cover portion 160, the cover packing having a shape that matches the shape of the portion of cover portion 160 that comes into contact with base portion 111 of heat sink 110. Cover packing 162 is made of silicone rubber or fluororubber.

[0096] A waterproof member is sandwiched between either the contact surface between the head of the screw and the base portion 111 or the contact surface between the head of the screw and the cover 161. The base portion 111 of the heat sink 110, the cover packing 162, and the cover portion 160 are fixed with a cover fixing device 169 such as a screw, but if the screw is used as is, water or moisture may get in through the gap at the tip or head of the screw.

[0097] For this reason, it is desirable to provide a waterproof washer (a metal or resin washer with a waterproof material such as rubber integrated on one side) on the screw head side.

[0098] In addition, a waterproofing member is provided at the tip of the screw (screw tip). In addition to the waterproof washer on the screw head side, it is desirable to also provide a waterproof washer and a cap nut on the screw tip side. Alternatively, a crimp nut or the like may be press-fitted into the base portion 111 of the heat sink 110 in advance, thereby eliminating the need to process the screw tip side.

[0099] According to the configuration of Figure 2, cover fixing device 169 and reinforcing part 140 fix base part 111 and cover 161 regardless of whether cover gasket 162 is present or not, so it is possible to construct a fixture that requires waterproof performance without changing the structure of the lighting fixture.

[0100] Furthermore, according to the configuration of Figure 2, even if the number of light source units is increased or decreased, it is possible to configure a lighting fixture that does not require waterproof performance and a lighting fixture that does require waterproof performance, without changing the structure of the lighting fixture, simply by adding or removing one cover gasket 162 (one waterproof member).

[0101] Furthermore, according to the configuration of FIG. 2, it is possible to share parts with non-waterproof general appliances and to impart waterproof performance by adding only one cover packing 162.

[0102] Figures 6 and 7 (Reinforcing portion 140 that suppresses deformation of base portion 111 of heat sink 110) When a waterproof structure is achieved by sandwiching cover gasket 162 between base portion 111 (plate-shaped mounting member) and cover portion 160 of heat sink 110, if base portion 111 of heat sink 110 is made of a plate material such as sheet metal and is fixed in place with a fixing member such as a screw, there is a possibility that base portion 111 of heat sink 110 will be deformed by sandwiching (while crushing) cover gasket 162.

[0103] Therefore, in this embodiment, as shown in FIG. 6, in addition to the base portion 111, cover gasket 162, and cover portion 160 of the heat sink 110, a reinforcing member is provided as a reinforcing portion 140 to prevent deformation of the base portion 111 of the heat sink 110.

[0104] The reinforcing member is provided to increase the rigidity of the end portion (outer peripheral surface) of the base portion 111 of the heat sink 110. Methods for increasing the rigidity of the base portion 111 include the following configurations. (1) The thickness of the base portion 111 is increased. (2) A U-shaped part is fixed to the end cross section of the base portion 111 to increase the section modulus. (3) An L-shaped part is fixed to the end cross section of the base portion 111 to increase the section modulus.

[0105] When the plate thickness of (1) is increased, the following configurations can be mentioned. (1-1) The thickness of the entire base portion 111 is increased. (1-2) A ring plate having the same outer circumferential shape as the outer circumferential shape of the base portion 111 is fixed to the outer edge of the base portion 111.

[0106] When the cross section of (2) is U-shaped, a reinforcing part 140 having a U-shaped cross section is attached. The U-shaped reinforcing part 140 is arranged so that the reinforcing member sandwiches the cover part 160, the cover packing 162, and the base part 111.

[0107] The reinforcing portion 140 will be described below with reference to FIG. The reinforcing portion 140 is fixed to the edge of the base portion 111 . The reinforcing portion 140 is an individual component having a generally U-shaped cross section, and sandwiches the base portion 111 and the cover 161. Alternatively, the reinforcing portion 140 sandwiches the base portion 111, the cover packing 162, and the cover 161.

[0108] The reinforcing portion 140 has an upper plate 147 , a back plate 148 , and a lower plate 149 . The upper plate 147 has three cylindrical holes 141 at both ends and in the center. The cylindrical hole portion 141 protrudes cylindrically from the upper surface of the upper plate 147, and has an inner wall threaded to fit a cover fixing tool 169 such as a screw. The lower plate 149 has three reinforcing holes 142 at both ends and in the center. The reinforcing hole 142 is a through hole through which a cover fixing tool 169 such as a screw passes. The upper plate 147 has an upper recess 1471 in the center that is recessed toward the back plate 148 . The upper recess 1471 is recessed in an arc shape so as not to interfere with the circular outer periphery of the fin portion 112 . On both sides of the reinforcing hole 142 in the center of the upper recess 1471 , there are notches 1472 so as not to interfere with the outer ends of the fins 112 arranged on both sides of the reinforcing hole 142 . The lower plate 149 has a recessed portion 1481 in the center that is recessed toward the back plate 148 . The lower recess 1481 is recessed in a trapezoidal shape so as not to interfere with the outer periphery of the base of the main cover 1611 of the cover part 160 . Since the circular outer periphery of the fin portion 112 bulges outward more than the outer periphery of the base of the main cover 1611 , the amount of depression of the upper depression 1471 is greater than the amount of depression of the lower depression 1481 .

[0109] The central cylindrical hole portion 141 and the central reinforcing hole portion 142 are formed at positions closer to the back plate 148 than the two cylindrical hole portions 141 and two reinforcing hole portions 142 on either side. The upper plate 147 has five inclined portions 143 formed parallel to the back plate 148 . The lower plate 149 has four inclined portions 143 formed parallel to the back plate 148 . Except for both ends of the upper plate 147, the inclined portions 143 are arranged on all sides of the upper plate 147 and the lower plate 149 that are parallel to the back plate 148. Since the side holding portions 1341 rest on both ends of the upper plate 147, the inclined portions 143 do not exist on both ends of the upper plate 147. Since both ends of the lower plate 149 do not interfere with the base-side protruding portion 133, the lower plate 149 has inclined portions 143 at both ends.

[0110] (Method of attaching the reinforcing portion 140) As shown in FIG. 7, the reinforcing portion 140 is inserted from the side so as to sandwich the cover flange portion 1612 , the cover packing 162 and the base portion 111 , and is fixed to the linear portion of the base portion 111 with a cover fixing tool 169 .

[0111] At this time, the reinforcing portion 140 is inserted so as to press the cover packing 162 . The reinforcing portion 140 has an inclined portion 143, which makes it easy to insert. The reinforcing portion 140 has a width M, the length of the base portion 111 is L, and the ends of the reinforcing portion 140 are spaced apart by R from the sides perpendicular to the side to which the reinforcing portion 140 is attached.

[0112] (Method of attaching the connecting part 130) 8, the connecting portion 130 is attached by inserting it from the side of the heat sink 110. The distance between the central pressing portion 1313 and the base-side protruding portion 133 is smaller than the distance between the side pressing portion 1341 and the base-side protruding portion 133 by the thickness of the upper plate 147 of the reinforcing portion 140.

[0113] The relationship between each part when installed is as follows: The top plate-side protrusion 132 abuts against the side (lower surface side) of the top plate 113 on which the fin portion 112 is located. The base-side protrusion 133 abuts against the cover flange 1612 . Since the base-side protrusion 133 has a depth of R, the base-side protrusion 133 does not collide with the lower plate 149 of the reinforcing part 140 . The central pressing portion 1313, together with the base-side protruding portion 133, sandwiches and holds the cover flange portion 1612 and the cover packing 162. At this time, the cover packing 162 is pressed toward the base portion 111 side. The side pressing portion 1341, together with the base-side protruding portion 133, sandwiches and holds the cover flange portion 1612, the cover packing 162, the base portion 111, and the upper plate 147 of the reinforcing portion 140. At this time, the cover packing 162 is pressed toward the base portion 111. The side pressing portion 1341 abuts against the upper surface of the end portion of the upper plate 147 of the reinforcing portion 140 (not shown in FIG. 8).

[0114] The end of the upper plate 147 of the reinforcing part 140 is separated by R from the main connecting part 131 of the connecting part 130, but since the depth of the side holding part 1341 is 2R or more, the side holding part 1341 can be placed on the upper surface of the end of the upper plate 147.

[0115] The contact of the side retaining portions 1341 with the reinforcing portion 140 increases resistance to loads such as shaking or twisting, improving the strength of the lighting fixture 1. Furthermore, by placing the side retaining portions 1341 on the ends of the upper plates 147 of the reinforcing portion 140 at the corners of the base portion 111, deformation of the base portion 111 in the diagonal direction is suppressed.

[0116] Furthermore, since the pressing notch portion 13411 abuts against the tubular hole portion 141, it is possible to suppress catching and twisting when a load such as twisting is applied. Furthermore, the pressing notch portion 13411 abuts against the outer peripheral wall of the tubular hole portion 141, preventing the reinforcing portion 140 from coming off.

[0117] When reinforcing portion 140 is an individual component having an L-shaped cross section, reinforcing portion 140 having an L-shaped cross section is attached. Reinforcing portion 140 having an L-shaped cross section covers the edges and end faces of base portion 111.

[0118] An L-shaped metal fitting is placed on the base part 111 of the heat sink 110 as a reinforcing member, and the cover part 160, the cover packing 162 and the base part 111 of the heat sink 110 are fastened together, thereby making it possible to fix the base part 111 of the heat sink 110 while suppressing deformation of the base part 111.

[0119] By attaching a reinforcing member such as the reinforcing portion 140 shown in FIG. 6 around the periphery of the base portion 111, deformation of the base portion 111 can be prevented. The reinforcing portion 140 shown in FIG. 6 prevents deformation of the plate-like base portion 111, and by sandwiching the cover packing 162, it is possible to reduce the weight of the device while ensuring waterproof performance. Furthermore, when the reinforcing portion 140 is made of a metal such as aluminum or iron and the cover 161 is made of a metal such as die-cast aluminum (aluminum die-cast material), a heat dissipation effect can be expected. That is, the heat of the heat sink 110 can be transferred to the cover 161 made of die-cast aluminum via the reinforcing portion 140.

[0120] ●Figure 17 (Suppression of deformation of the base portion 111 of the heat sink 110) The peripheral edge of the base portion 111 is bent by 90 degrees to form an outer periphery of the base portion 111 having an L-shaped cross section. As a method for increasing the rigidity of the base portion 111 of the heat sink 110 without using a reinforcing member, it is possible to bend the end portion of the base portion 111 of the heat sink 110 as shown in FIG.

[0121] The base portion 111 has a circular light source fixing portion 1112 that fixes the light source portion 150 to the lower surface thereof, and a bent portion 1111 that is bent downward from the outer end of the light source fixing portion 1112 . The bent portion 1111 is formed by bending one entire side of the base portion 111 along a straight bending line parallel to the side of the base portion 111 . Top plate 113 has circular fin fixing portion 1132 that fixes fin portion 112 to the underside thereof, and bent portion 1131 that is bent downward from the outer end of fin fixing portion 1132 . The bent portion 1131 is formed by bending one entire side of the top plate portion 113 along a straight bending line parallel to the side of the top plate portion 113 .

[0122] 17(a), the bent portion 1111 is bent downward by 90 degrees from the end of the light source fixing portion 1112. Similarly, the bent portion 1131 is bent downward by 90 degrees from the end of the fin fixing portion 1132.

[0123] 17(b), the bent portion 1111 is bent downward at an angle greater than 90 degrees and less than or equal to 180 degrees from the end of the light source fixing portion 1112. Similarly, the bent portion 1131 is bent downward at an angle greater than 90 degrees and less than or equal to 180 degrees from the end of the fin fixing portion 1132.

[0124] A bent portion may be formed in only one of the base portion 111 and the top plate portion 113. That is, a bent portion may be formed in at least one of the base portion 111 and the top plate portion 113. Bent portion 1111 and bent portion 1131 are formed on a pair of opposing sides to which connecting portion 130 is not fixed. In this embodiment, base portion 111 and top plate portion 113 are rectangular, connecting portion 130 is fixed to two opposing sides of the rectangle, and bent portions are formed on the remaining two opposing sides of the rectangle.

[0125] When a reinforcing member is added, the number of parts must be increased, but when the base portion 111 of the heat sink 110 is bent, it is possible to increase the rigidity without changing the number of parts.

[0126] In the case of waterproof appliances, it is expected that water will come into direct contact with the appliance. If water remains inside the appliance, it may cause rust or water intrusion. Therefore, as shown in Figures 25 and 28, it is preferable that the bending direction of the bent portion 1111 at the end of the base portion 111 of the heat sink 110 is opposite to the bending direction of the fin portion 112 of the heat sink 110.

[0127] If the base portion 111 of the heat sink 110 is bent in the same direction as the fin portion 112 of the heat sink 110, the base portion 111 of the heat sink 110 will be tray-shaped and water will accumulate therein. By bending the heat sink 110 in the opposite direction to the fin portion 112, even if water gets on the heat sink 110, the water will flow away without stagnating. Even in devices that do not have packing, bending the end of the base portion 111 of the heat sink 110 is an effective way to increase the rigidity of the base portion 111 of the heat sink 110. Increasing the rigidity of the base portion 111 of the heat sink 110 makes it possible to directly fix the ceiling mounting arm 10 to the base portion 111 of the heat sink 110.

[0128] The case of the top panel 113 is similar to that of the base 111 . According to the configuration of Figure 17, by providing a bending portion on each side of the base portion 111 or the top plate portion 113 of the heat sink 110, deformation can be suppressed, and when a packing or the like is tightened to the base portion 111 or the top plate portion 113, deformation of the base portion 111 or the top plate portion 113 and the packing or the like can be suppressed.

[0129] FIG. 18 is a diagram showing a modified example of the bent portion 1131 of the top plate portion 113. In FIG. (a) shows that the bent portion 1131 of the top plate portion 113 is bent downward by 90 degrees to form an L-shaped cross section perpendicular to the side of the base portion 111, the top plate side protrusion 132 of the connecting portion 130 is placed above the top plate portion 113, the bent portion 1131 is placed inside the main connecting portion 131 of the connecting portion 130, and the bent portion 1131 and the main connecting portion 131 are fixed with a top plate fixing device 137 such as a screw.

[0130] (b) shows that the bent portion 1131 of the top plate portion 113 is bent downward by 90 degrees to form an L-shaped cross section perpendicular to the side of the base portion 111, the top plate side protrusion portion 132 of the connecting portion 130 is below the top plate portion 113, the bent portion 1131 is on the outside of the main connecting portion 131 of the connecting portion 130, and the top plate side protrusion portion 132 and the top plate portion 113 are fixed with a top plate fixing device 137 such as a screw.

[0131] (c) shows a structure in which the protruding portion 132 on the top plate side is removed from the connecting portion 130, the bent portion 1131 of the top plate portion 113 is bent downward by 90 degrees to form an L-shaped cross section perpendicular to the side of the base portion 111, the bent portion 1131 is placed inside the main connecting portion 131 of the connecting portion 130, and the bent portion 1131 and the main connecting portion 131 are fixed with a top plate fixing device 137 such as a screw.

[0132] (d) shows a structure in which the protruding portion 132 on the top plate side has been removed from the connecting portion 130, the bent portion 1131 of the top plate portion 113 has been bent downward by 90 degrees to form an L shape, the bent portion 1131 is on the outside of the main connecting portion 131 of the connecting portion 130, and the bent portion 1131 and the main connecting portion 131 are fixed with a top plate fixing device 137 such as a screw.

[0133] (e) shows that the bent portion 1131 of the top plate portion 113 is bent 180 degrees to form a U-shaped cross section perpendicular to the sides of the base portion 111, and the bent portion 1131 is placed on top of the top plate side protrusion 132 of the connecting portion 130, and the top plate portion 113, bent portion 1131, and top plate side protrusion 132 are fixed with a top plate fixing device 137 such as a screw.

[0134] (f) shows that the bent portion 1131 of the top plate portion 113 is bent 180 degrees to form a U-shaped cross section perpendicular to the side of the base portion 111, and the bent portion 1131 is placed below the top plate side protrusion 132 of the connecting portion 130, and the top plate portion 113, bent portion 1131, and top plate side protrusion 132 are fixed with a top plate fixing device 137 such as a screw.

[0135] In the configurations (c) and (d), there are no parts protruding from the top surface of the top panel portion 113. In the configurations (b) and (e), the only parts protruding from the top surface of the top plate portion 113 are the screw heads of the top plate fixing fixtures 137.

[0136] FIG. 19 is a diagram showing a modified example of the bent portion 1111 of the base portion 111. In FIG. In (a), the bent portion 1111 of the base portion 111 is bent downward by 90 degrees so that the cross-sectional shape perpendicular to the side of the base portion 111 is L-shaped, the bent portion 1111 is on the outside of the cover flange portion 1612, the base side protrusion portion 133 of the connecting portion 130 is below the lower tip of the bent portion 1111, the bent portion 1111 is on the inside of the main connecting portion 131 of the connecting portion 130, and the central pressing portion 1313 and the base side protrusion portion 133 are fixed between the cover flange portion 1612 and the base portion 111 with a cover fixing device 169 such as a screw.

[0137] (b) shows that the bent portion 1111 of the base portion 111 is bent twice by 90 degrees to form a U-shaped cross section perpendicular to the sides of the base portion 111, and the cover flange portion 1612 is placed in close contact with the U-shaped recess of the bent portion 1111, the bent portion 1111 is placed inside the main connecting portion 131 of the connecting portion 130, and the cover flange portion 1612 and the base portion 111 are sandwiched between the central pressing portion 1313 and the base side protruding portion 133 and fixed with a cover fixing device 169 such as a screw.

[0138] (c) shows that the bent portion 1111 of the base portion 111 is bent 180 degrees to form a U-shaped cross section perpendicular to the sides of the base portion 111, with the bent portion 1111 on the outside of the cover flange portion 1612 and the bent portion 1111 on the inside of the main connecting portion 131 of the connecting portion 130, and the central pressing portion 1313 and the base side protruding portion 133 are fixed with a cover fixing device 169 such as a screw between the cover flange portion 1612 and the base portion 111. Although not shown, in the area where the central pressing portion 1313 is not present, the base portion 111 and the base side protruding portion 133 may be fixed with a cover fixing device 169 such as a screw, sandwiching the cover flange portion 1612 therebetween.

[0139] Figures 9 and 10 (Power supply case drawing structure) The lighting fixture 1 has a lighting circuit section 121 and a case section 123 that covers the lighting circuit section 121. In this embodiment, lighting circuit section 121 and case section 123 are placed on top of top plate section 113 disposed above heat sink 110 .

[0140] The lighting circuit unit 121 and the case unit 123 may be installed directly on the base unit 111 of the heat sink 110 instead of on the top plate unit 113, or may be attached to the arm 10 for ceiling mounting. Also, a space may be provided above the fin unit 112 of the heat sink 110, and the lighting circuit unit 121 and the case unit 123 may be attached across the left and right sides of the arm 10. The case 123 has the function of protecting the lighting circuit 121. Specifically, it has the functions of preventing direct contact with the power supply board 1222, preventing dust from accumulating, and ensuring insulation performance.

[0141] Typically, when making the box-shaped case 123 from sheet metal, the box shape is formed by bending a roughly cross-shaped unfolded shape. In this case, gaps are created at the ridges (butt joints) of each bent and raised surface. If gaps are created, there is a risk of dust accumulation, as mentioned above, or the surface may come into contact with the substrate. Therefore, welding the ridges (butt joints) can solve the above problems, but welding takes time to process and requires confirmation that the welding is done without any gaps.

[0142] In this embodiment, in order to solve the above problem, a single plate material (sheet metal) is drawn (deep drawn) to form a gap-free box-shaped (cylindrical) case portion 123. The drawing can be performed by press working or the like. The box-shaped shape is formed by pressing from one direction, and one side is open.

[0143] The case 123 houses the lighting circuit 121 in a seamless recess formed from a single metal plate. The case portion 123 has a recessed main case portion 12311 having an opening, a step portion 12312 formed around the opening, and a case flange portion 12313 formed around the step portion 12312. The step portion 12312 is a packing housing portion that houses the case packing 1232. The step portion 12312 is in the form of a staircase. The step portion 12312 has a horizontal ring portion 12314 and a vertical band portion 12315 . The horizontal ring portion 12314 is a rectangular ring portion located between the main case portion 12311 and the vertical band portion 12315 and parallel to the case flange portion 12313. The vertical band portion 12315 is located between the horizontal ring portion 12314 and the case flange portion 12313 and is an annular band portion parallel to the side surface of the main case portion 12311. The case portion 123 is formed by drawing a single metal plate from one direction, and each corner is rounded without any sharp edges.

[0144] To impart waterproofing to the case part 123, a ring-shaped case packing 1232 can be disposed on the opening side of the case part 123, which can be easily achieved. The case packing 1232 is disposed on the step portion 12312 and is sandwiched between the step portion 12312 and the top plate portion 113 . The case packing 1232 has a rectangular ring-shaped frame, and the cross section of the frame is rectangular. The outer shape of the case packing 1232 is the same as the inner shape of the vertical band portion 12315 . The height of the case packing 1232 is higher than the height of the vertical band portion 12315, but is pressed by the horizontal ring portion 12314 and the case flange portion 12313 to become the same height as the vertical band portion 12315. Case packing 1232 has two annular protrusions 12321 on its lower surface which comes into close contact with the upper surface of top plate 113 . The annular protrusion 12321 is deformed by the pressure applied by the horizontal ring portion 12314 and the top plate portion 113, thereby improving the water-stopping effect. One or more annular protrusions 12321 may be provided. The case packing 1232 has two annular ridges 12322 on its outer surface that closely contacts the inner surface of the vertical band portion 12315 .

[0145] When the case packing 1232 is pressurized and expands outward, the annular ridges 12322 are pressed against the inner wall of the vertical bands 12315 and deform, improving the watertight effect. The case packing 1232 is preferably made of silicone rubber or fluororubber.

[0146] When fixing the case portion 123 to the top plate portion 113, the rigidity of the top plate portion 113 can be increased by bending the ends of the top plate portion 113, as with the base portion 111 of the heat sink 110 described above, and deformation of the top plate portion 113 can be suppressed.

[0147] Moreover, by bending the case 123 in the opposite direction (downward), it is possible to prevent water from accumulating.

[0148] The case part 123 shown in Figures 9 and 10 is formed by being pressed from one direction and has a (cylindrical) box-shaped power supply storage part with one open side, and since there are no butting parts on the side of the case part 123, it is easy to ensure airtightness.

[0149] As a result, there are absolutely no gaps at the corners of the case portion 123, and airtightness can be easily ensured without post-processing such as welding the ridges (butt joints), making it possible to prevent the intrusion of dust and water.

[0150] Furthermore, since the case fixing device 129 fixes the top panel portion 113 and the case portion 123 together regardless of whether the case packing 1232 is present or not, it is possible to configure a lighting fixture that requires waterproof performance without changing the structure of the lighting fixture.

[0151] Furthermore, it is possible to configure both a device that does not require waterproof performance and a device that does require waterproof performance, simply by the presence or absence of one case packing 1232 (one waterproof member).

[0152] In addition, it is possible to share parts with non-waterproof general appliances and to impart waterproof performance by adding only one case packing 1232.

[0153] Figures 5 and 8 (Fixed portion 139 of connecting portion 130) The cover portion 160 is fixed to the base portion 111 of the heat sink 110 by a cover fixing member 169, which is a fastening member such as a screw. Furthermore, a top plate portion 113 is provided on the heat sink 110, and a lighting circuit portion 121 and a case portion 123 are fixed on top of the top plate portion 113. The base portion 111 and the top plate portion 113 of the heat sink 110 are fixed together by a connecting portion 130 .

[0154] The ceiling mounting arm 10 is also fixed to this connecting portion 130. The connecting portion 130 is a metal fixture that secures the base portion 111, the top plate portion 113, and the cover portion 160 together. The lateral protrusions 134 are connecting portions that extend in the vertical direction. The side protrusions 134 have a vertically long, elongated shape, and the skirt portions at the bottom of the side protrusions 134 gradually become wider as they approach the base portion 111 .

[0155] The top plate side protrusion 132 is an upper fixing portion for attaching the top plate portion 113 . The base-side protrusion 133 is a lower fixed part that covers and supports the cover part 160. The side pressing portion 1341 is an intermediate fixing portion located between the upper fixing portion and the lower fixing portion, and fixes the screw that penetrates the base portion 111 of the heat sink 110 and receives the base portion 111 of the heat sink 110 .

[0156] The connecting portion 130 connects the base portion 111 and the top plate portion 113 and fixes the cover portion 160 and the base portion 111 together. The connecting portion 130 has a flat connecting main portion 131 located between the top plate portion 113 and the base portion 111 . The connecting portion 130 has a fixing portion 139 at the bottom thereof that sandwiches and fixes the cover portion 160 and the base portion 111.

[0157] The fixing portion 139 is made up of the base side protrusion portion 133 , side pressing portions 1341 and a central pressing portion 1313 . The base-side protruding portion 133 is perpendicular to the connecting main portion 131 at the lower end of the connecting main portion 131 . The base-side protrusion 133 covers the lower surface of the edge of the cover 160 , that is, the lower surface of the cover flange 1612 .

[0158] The base-side protrusion 133 is formed by bending the lower end of the main connecting portion 131 by 90 degrees. The side pressing portions 1341 and the central pressing portion 1313 are disposed midway along the main connecting portion 131 in parallel with the base-side protruding portion 133 .

[0159] The side pressing portions 1341 cover the upper surfaces of the ends of the reinforcing portions 140 . The central pressing portion 1313 covers the upper surface of the center of the edge of the base portion 111 . The connecting portion 130 has a lateral protruding portion 134 that is perpendicular to the connecting main portion 131 at the side end of the connecting main portion 131 . The lateral protrusions 134 can be formed by bending the side end portions of the main connecting portion 131 by 90 degrees. The side pressing portion 1341 is perpendicular to the side protruding portion 134 below the side protruding portion 134 . The side pressing portions 1341 can be formed by bending the lower end portions of the side protruding portions 134 inward by 90 degrees.

[0160] The side pressing portion 1341 is a plate that presses the end portion of the base portion 111 . The connecting portion 130 has a pillar portion 1312 at the center of the connecting main portion 131, The central pressing portion 1313 is located below the pillar portion 1312 and is perpendicular to the pillar portion 1312 . The central pressing portion 1313 can be formed by cutting out a tongue-shaped portion of the lower part of the pillar portion 1312 and bending it inward at 90 degrees.

[0161] The central pressing portion 1313 is formed in the center of the connecting portion 130 in the left-right direction, and protrudes from the main connecting portion 131 by the same length as the width of the base-side protruding portion 133 . The side pressing portions 1341 are formed on both left and right ends of the connecting portion 130 and protrude from the main connecting portion 131 longer than the base side protruding portion 133 and the central pressing portion 1313 . The base-side protrusion 133 and the central pressing portion 1313 sandwich the base portion 111 and the cover flange 1612 therebetween. The distance between the base-side protrusion 133 and the central pressing portion 1313 is the sum of the thickness of the base portion 111 and the thickness of the cover flange 1612 .

[0162] The base-side protruding portion 133 and the side pressing portion 1341 sandwich the base portion 111, the cover flange portion 1612, and the upper plate of the reinforcing portion 140. The distance between the base-side protrusion 133 and the side pressing portion 1341 is the sum of the thickness of the base portion 111 , the thickness of the cover flange 1612 , and the thickness of the metal plate of the upper plate 147 of the reinforcing portion 140 .

[0163] The side pressing portions 1341 are formed to protrude long inward at both the left and right ends of the connecting portion 130. The side pressing portions 1341 overlap with the ends of the upper plate 147 of the reinforcing portion 140 to sandwich the ends of the upper plate 147 of the reinforcing portion 140, and have pressing notches 13411 that avoid the tubular hole portion 141 protruding from the upper plate 147 of the reinforcing portion 140.

[0164] In this embodiment, a cover packing 162 is disposed between the base portion 111 of the heat sink 110 and the cover portion 160 to provide waterproof performance. In this embodiment, in order to fix the base portion 111 of the heat sink 110, the cover gasket 162, and the cover portion 160 at once, the connecting portion 130 has multiple functions, making it possible to fix various parts without increasing the number of parts. Specifically, the cover part 160, the base part 111 of the heat sink 110, and the cover packing 162 are fixed with fastening members such as screws by being sandwiched between the base side protrusion 133 which is the lower fixing part of the connecting part 130 and the side pressing part 1341 which is the intermediate fixing part, and the top plate part 113 is fixed with fastening members such as screws to the top plate side protrusion 132 which is the upper fixing part. At this time, a hole through which a screw passes is formed in the base side protrusion 133 which is the lower fixing part, and a screw hole through which a screw can be fastened is formed in the side pressing part 1341 which is the intermediate fixing part. Furthermore, an arm 10 for installing the lighting fixture on the ceiling can be fixed to the pillar portion 1312 which is the connecting portion of the connecting portion 130.

[0165] 5 and 8, fixing portion 139 has the function of fixing a plurality of members. Therefore, there is no need to provide light source unit 150 with an attachment structure for fixing cover unit 160, and cover 161 can be reliably fixed without increasing the number of parts and assembly steps.

[0166] According to the configurations shown in Figures 5 and 8, by providing a fixing portion 139 on the connecting portion 130 that connects the base portion 111 and the top plate portion 113 of the heat sink 110, it becomes possible to fix the cover 161 while restricting the dimensions without providing a separate member, and the use of standardized parts makes assembly easier.

[0167] Figures 5 and 20 (Connecting part 130 with enhanced vibration resistance) As described above, the main function of the connecting portion 130 is to fix the base portion 111 and top plate portion 113 of the heat sink 110 and to fix the arm 10 .

[0168] On the other hand, when using equipment that will be installed in an environment where vibrations are present, such as with a crane, it is necessary to strengthen vibration resistance. Generally, vibrations must be considered in the horizontal direction (x and y directions) and the vertical direction (z direction). When strengthening vibration resistance, it is necessary to consider improving rigidity in each of the above x, y, and z directions.

[0169] In order to improve the rigidity, it is necessary to improve the rigidity of the connecting portion 130 in the x, y, and z directions, and to increase the number of fixing points between the base portion 111 and the top plate portion 113 of the heat sink 110 and the connecting portion 130.

[0170] The connecting portion 130 of this embodiment has a shape that increases the strength in the x, y, and z directions. Specifically, as shown in Fig. 5, the connecting portion 130 has the following three orthogonal surfaces. xy plane: base side protrusion 133, top plate side protrusion 132, side holding portion 1341 yz plane: connecting main part 131 xz plane: a pair of lateral protrusions 134

[0171] The base portion 111 and the top plate portion 113 of the heat sink 110 have substantially the same rectangular shape. The main connecting portion 131 of the connecting portion 130 is a rectangular plate having sides the same length as the sides of the base portion 111 and the top plate portion 113 .

[0172] The connecting portion 130 has a base-side protruding portion 133 , a top-plate-side protruding portion 132 , and a pair of side protruding portions 134 on the four sides of the connecting main portion 131 . The base-side protruding portion 133 and the top-plate-side protruding portion 132 are formed by bending the top and bottom of the main connecting portion 131 in a 90-degree direction. The lateral protrusions 134 are formed by forming first bent portions on the left and right sides of the main connecting portion 131 and bending them in a 90-degree direction. The side pressing portion 1341 is formed by forming a second bent portion below the side protruding portion 134 and bending it in the 90-degree direction. The side pressing portions 1341 are parallel to the base portion 111 of the heat sink 110 .

[0173] The base-side protrusion 133, the top-plate-side protrusion 132, the side pressing portion 1341, the main connecting portion 131, and the side protrusion 134 are perpendicular to each other, and increase rigidity in all directions.

[0174] Although not shown, the side of the frame side portion 1314 may be bent by 90 degrees to form an xz plane parallel to the side protrusion portion 134 .

[0175] Alternatively, the lower side of the frame lower portion 1315 and the upper side of the frame upper portion 1316 may be bent at 90 degrees to form an xy plane parallel to the base side protrusion portion 133 and the top plate side protrusion portion 132 .

[0176] In the xy plane formed by bending the lower side of the frame lower part 1315 and the upper side of the frame upper part 1316, a recess is formed, similar to the upper plate of the reinforcing part 140. The lower side of the frame lower portion 1315 is bent to form an inclined portion in the xy plane, similar to the upper plate of the reinforcing portion 140 .

[0177] As shown in Figure 20, in this embodiment, the main connecting portion 131, which is widened in the width direction of the connecting portion 130, has a plurality of holes 138 formed in the pillar portions 1312 and the frame side portions 1314 to serve as weight-reducing holes in order to reduce weight. The diameter of the holes 138 decreases as the hole approaches the base portion 111, thereby ensuring the strength of the base portion 111. Furthermore, by providing holes, it is possible to create a shape that does not obstruct the flow of air to the fin portion 112 of the heat sink 110 contained therein, thereby achieving increased rigidity without affecting heat dissipation performance.

[0178] According to the configuration of FIG. 5, it is possible to configure a lighting fixture that can withstand vibrations (forces) in different directions without providing reinforcing members corresponding to each direction.

[0179] According to the configuration of FIG. 5, the connecting portion 130 has three-dimensional orthogonal surfaces, so that it is possible to provide a frame structure for a vibration-resistant device.

[0180] According to the configuration of FIG. 5, it is possible to increase the rigidity against horizontal and vertical vibrations without providing a separate member, and it is possible to improve the vibration resistance performance.

[0181] Figures 11 and 12 (Fixture mounting bracket) The lighting fixture of this embodiment is fixed to the ceiling surface by an arm 10 fixed to a connecting portion 130. The arm 10 is formed in a U-shape so as to straddle the lighting fixture 1, and is fixed to two connecting portions 130 with two bolts each. The arm 10 is provided with holes corresponding to the two bolts, with the upper hole 12 being a circular hole having a substantially perfect circular shape, and the lower hole 13 being an arc-shaped hole having an arc-like shape. The irradiation direction of the device can be changed by changing the position of the arc-shaped hole of the lower hole 13 using the bolt of the upper hole 12 as an axis.

[0182] The range of change in the irradiation direction is determined by the arc-shaped hole shape of lower hole 13 of arm 10, but if the angle is set, there is a risk of interference with case part 123 or top plate part 113 mounted on the fixture, so it is common to limit the angle to a certain extent (roughly around 30 degrees). If the angle needs to be adjusted to around 90 degrees, this can be achieved by lengthening arm 10, but this will move the fixture's center of gravity farther from the ceiling mounting surface, which is disadvantageous in terms of strength, so it will be necessary to increase the strength of arm 10 relatively.

[0183] On the other hand, the lighting fixture 1 is generally installed on the ceiling, but in cases where the ceiling is high, the fixture may be installed on a wall and the angle of the lighting fixture may be adjusted to irradiate the light.

[0184] In this case, by using an instrument mounting bracket 200 shown in FIG. 11, it becomes possible to easily mount even a general arm 10 (with an angle adjustment of about ±30 degrees) on a wall surface. The appliance mounting bracket 200 in this embodiment has a bracket leg 220 that serves as a wall surface fixing part to be fixed to a wall surface, and an appliance mounting part 210 that is set at a predetermined angle to the wall surface, and the appliance mounting part 210 has an appliance fixing hole 211 formed in the direction of gravity. The instrument fixing hole 211 has a diameter that decreases in the horizontal direction toward the direction of gravity.

[0185] The worker loosely fastens bolt 291 and nut 292 in mounting hole 11 of arm 10, inserts bolt 291 from bottom to top into the wider upper part of instrument fixing hole 211, and then slides bolt 291 into the narrower lower part of instrument fixing hole 211. In this state, bolt 291 is temporarily hooked into instrument fixing hole 211 due to the weight of the instrument, so the worker can install the instrument with both hands and does not need to install the instrument while holding down bolt 291 with one hand, improving workability.

[0186] Furthermore, since the arm 10 of the lighting fixture 1 can be used as is without being replaced with a separate part, the lighting direction can be easily adjusted by using a fixture having a lighting direction adjustment function. 11(a) has a wall surface mounting portion and a side surface portion 222 that is perpendicular to the wall surface mounting portion, and the side surface portion 222 is arranged so as not to overlap the appliance fixing hole 211 of the appliance mounting portion 210 in a side view. This makes it possible to install the bolt 291 into the appliance mounting bracket 200 from the side when mounting an appliance.

[0187] 11(a), the edge of the side surface portion 222 of the appliance mounting bracket 200 on the appliance mounting portion 210 side is a curved portion 223, which provides a working gap 250 from the appliance mounting portion 210 in side view. The curved portion 223 is spaced 10 mm or more from the appliance mounting portion 210 in side view. The side portion 222 of the appliance mounting bracket 200 in Figure 11(b) is connected to the appliance mounting portion 210 by a straight portion 224. The length of both the left and right sides of the appliance mounting portion 210 is the same as the length of the straight portion 224 of the side portion 222. The side portion 222 has a horizontally long rectangular window 225 along the straight portion 224. The window 225 provides a working gap 250 for the appliance mounting portion 210 in side view. The window 225 provides a gap 250 of 10 mm or more for the appliance mounting portion 210 in side view.

[0188] The presence of the gap 250 makes it possible to insert a tool from the side portion 222 of the appliance mounting bracket 200 to the back side of the appliance mounting portion 210 (the side opposite the appliance mounting surface) when fixing an appliance to the appliance mounting portion 210 with a bolt 291 and a nut 292, making installation easy.

[0189] As shown in FIG. 11, the tool mounting portion 210 is formed with only the tool fixing hole 211 through which the mounting bolt 291 passes, but a hole for reducing the weight may be provided. As shown in FIG. 11, the tool attachment portion 210 does not have any welding or fixing points, and can be manufactured as an integrated part by bending a single sheet metal. If the curved portion 223 is set back significantly, the bracket body portion 230 of the appliance mounting bracket 200 in FIG. 11(a) may be omitted, and the appliance mounting portion 210 may be directly connected to the bracket waist portion 240. The appliance mounting bracket 200 of Figure 11(b) does not have a bracket body portion 230 and a bracket waist portion 240, so it is lighter than the appliance mounting bracket 200 of Figure 11(a) and requires fewer bending times, making it easier to manufacture. Furthermore, the fixture mounting bracket 200 in Figure 11 (b) has a sturdy structure in which the left and right sides of the fixture mounting portion 210 are connected to the straight portion 224 of the side portion 222 over their entire length, excluding the window 225, and the inclination angle of the fixture mounting portion 210 is unlikely to change due to the weight of the lighting fixture.

[0190] 12, the arm 10 is fixed to the underside of the appliance mounting part 210, but the arm 10 may also be fixed to the upper side of the appliance mounting part 210. In this case, the arm 10, without the bolt 291 and nut 292 attached, is placed on the upper side of the appliance mounting part 210 of the appliance mounting bracket 200 via the gap 250, and then the bolt 291 and nut 292 are passed through the mounting hole 11 and appliance fixing hole 211 of the arm 10, and the nut 292 is tightened to secure the arm 10 from below. When fixing the arm 10 to the upper side of the appliance mounting part 210, it becomes possible to hang the appliance on the appliance mounting bracket 200 before inserting the bolt 291 into the mounting hole 11 of the arm 10, making installation even easier.

[0191] As shown in Figure 12(b), the appliance mounting bracket 200 can be attached to a mounting surface 900 such as a horizontal ceiling surface, rather than a vertical wall. The appliance mounting bracket 200 shown in Figure 12(b) has a smaller lateral diameter near the bracket body 230, which is the opposite of the appliance fixing hole 211 in Figure 11, and the appliance fixing hole 211 has a smaller lateral diameter toward the direction of gravity.

[0192] As shown in FIG. 12(c), the appliance mounting bracket 200 can be mounted on a mounting surface 900 such as an inclined wall surface, rather than on a vertical wall.

[0193] ●Figure 21 (Cover gasket 162) The cover packing 162 is disposed on the cover flange 1612 and is sandwiched between the cover flange 1612 and the base portion 111 . As shown in FIG. 21, the cover flange 1612 has a horizontal flange portion 16121 and a flange band portion 16122.

[0194] The horizontal flange portion 16121 is a rectangular ring portion that is perpendicular to the side surface of the main cover 1611 and parallel to the lower surface of the main cover 1611 . The flange portion 16122 is an annular belt portion that is perpendicular to the flange horizontal portion 16121 , that is located around the flange horizontal portion 16121 , and that is parallel to the side surface of the main cover 1611 . The cover flange 1612 has an inner convex portion 1613 , a plurality of convex portions 1614 , and a plurality of concave portions 1615 on the inside of the flange horizontal portion 16121 and the flange band portion 16122 .

[0195] The inner protrusion 1613 protrudes inward from the inner surface of the side surface of the main cover 1611 . There are eight inner protrusions 1613 in total, two on each side. The inner protrusion 1613 is L-shaped and protrudes from the inner surface of the cover flange 1612 along the inner surface of the side surface of the main cover 1611 . The inner convex portion 1613 has a step portion 1616 at the top of the corner of the L shape. The light source units 150 each having a circular outer shape are attached to the eight stepped portions 1616 in total, positioned by the orthogonal walls of the stepped portions 1616 .

[0196] The outer shape of the cover packing 162 is the same as the outer shape of the flange portion 16122 . The outer periphery of the cover packing 162 is pressed by the upper end surface of the flange portion 16122 and the base portion 111, and is deformed thin, so that the thickness of the cover packing 162 becomes a predetermined thickness (a predetermined amount of compression). The cover packing 162 has a plurality of recesses 1622, a plurality of protrusions 1623, and one annular protrusion 1624 on its lower surface.

[0197] The annular protrusion 1624 is a rail-shaped protrusion that goes around the bottom surface of the cover packing 162 . The annular protrusion 1624 is deformed by pressure from the flange horizontal portion 16121 and the base portion 111, thereby improving the waterproofing effect. One or more annular protrusions 1624 may be provided.

[0198] The recess 1622 of the cover packing 162 fits over the protrusion 1614 of the cover flange 1612 for close contact. The protrusion 1623 of the cover packing 162 is fitted into the recess 1615 of the cover flange 1612 and comes into close contact. The cover packing 162 has a cap portion 1621 that protrudes inward in a turtle-like shape. The lid portion 1621 of the cover packing 162 is in close contact with the inner convex portion 1613 of the cover flange portion 1612 so as to cover it.

[0199] The lid portion 1621 has a step portion 1629 having an orthogonal wall corresponding to the step portion 1616 of the inner convex portion 1613 . The step portion 1629 of the lid portion 1621 has a horizontal wall 1627 and an arc wall 1628 . The horizontal wall 1627 is a flat surface that abuts against the lower surface of the outer edge of the light source unit 150 . The arc wall 1628 is an arc-shaped surface that abuts against the outer peripheral surface of the light source unit 150 . The eight arc walls 1628 are surfaces with the same radius as the outer periphery radius of the light source unit 150 . The lid portion 1621 is present between the light source portion 150 and the cover portion 160, and thus can provide a cushioning function and protect the light source portion 150 from impact.

[0200] The cover packing 162 has two annular protrusions 1625 on the upper surface. The annular protrusion 1625 is a rail-shaped protrusion that goes around the top surface of the cover packing 162 . Both of the two annular projections 1625 are formed inside the screw holes 1626 . The annular protrusion 1625 is deformed by pressure from the flange horizontal portion 16121 and the base portion 111, thereby improving the water-stopping effect. There may be one or more annular protrusions.

[0201] The outer shape of the cover packing 162 may be the same as the inner shape of the flange portion 16122, and the cover packing 162 may be hidden inside the flange portion 16122. The cover packing 162 is not pressurized by the flange portion 16122, but is pressurized by the flange horizontal portion 16121 and the base portion 111 and deformed.

[0202] Embodiment 2 The configuration of lighting device 1 according to embodiment 2 will be described with reference to FIGS. The following describes the differences from the first embodiment.

[0203] Figures 22, 23 and 24 (Configuration of lighting fixture 1) As shown in FIGS. 22, 23 and 24, the main connecting portion 131 of the connecting portion 130 is composed of only the pillar portion 1312 of the first embodiment. A top plate-side protrusion 132 and a base-side protrusion 133 are formed above and below the pillar 1312 . A central pressing portion 1313 is formed at the bottom of the pillar portion 1312 . The configurations of the top plate side protrusion 132, the base side protrusion 133, and the central pressing portion 1313 are the same as those in the first embodiment.

[0204] The base portion 111 has two pins 1115 for positioning the heat dissipation sheet 171 . The top plate portion 113 has a concave portion 1138 facing the top plate side protrusion portion 132 . The concave surface portion 1138 is recessed below the upper surface of the top plate portion 113 and is a flat portion having the same shape as the top plate side protrusion portion 132 . The concave surface portion 1138 is recessed below the upper surface of the top plate portion 113, thereby improving the resistance of the top plate portion 113 to deformation.

[0205] As shown in FIG. 24, on the base portion 111, an insulating sheet 172, a heat dissipation sheet 171, a light source substrate 151, and a lens portion 152 are arranged in this order. The lighting fixture 1 does not have the reinforcing portion 140, and the base portion 111 is reinforced by a bent portion 1111 that is bent into an L shape from the base portion 111.

[0206] ●Figures 25 and 26 (Bent portion 1111 of base portion 111) As shown in FIGS. 25 and 26, the base portion 111 has bent portions 1111 on each side. One bent portion 1111 is arranged on each of the straight portions of a pair of opposing sides of the base portion 111 . Two bent portions 1111 are arranged on the straight portions of each of another pair of opposing sides of the base portion 111. Between the two bent portions 1111, there is an attachment space 1114 for attaching the connecting portion 130.

[0207] The width of the connecting portion 130 and the width of the mounting space 1114 are the same, and the base-side protruding portion 133 of the connecting portion 130 passes through the mounting space 1114 and is fixed to the lower surface of the base portion 111. The height of the bent portion 1111 is the same as or less than the thickness of the cover flange portion 1612 .

[0208] Although not shown, the bent portion 1131 of the top plate portion 113 may also have the same configuration as the bent portion 1111 of the base portion 111 in FIGS.

[0209] ●Figures 26 and 27 (heat dissipation sheet 171 and insulating sheet 172) As shown in FIGS. 26 and 27, the light source substrate 151 has an octagonal or approximately octagonal shape. The heat dissipation sheet 171 has an octagonal or approximately octagonal shape that is larger than the light source substrate 151 . The heat dissipation sheet 171 has tongue portions 1711 with through holes on two sides. The heat dissipation sheet 171 is positioned by inserting the pins 1115 of the base portion 111 into the through holes of the tongue portion 1711 . The heat dissipation sheet 171 has wire-passing holes 176 (not shown) on the outer periphery. The wire-passing hole 176 has the same shape as the board hole 153, and is a hole through which the wire-passing packing 116 is inserted and the wire 1221 is passed.

[0210] The insulating sheet 172 is ring-shaped. The insulating sheet 172 has a ring-shaped portion 173 and a return portion 174 .

[0211] The annular portion 173 is a ring-shaped flat sheet, and the inner shape of the annular portion 173 shown by the dashed line is an octagon or approximately octagonal shape smaller than the heat dissipation sheet 171, and the outer shape of the annular portion 173 is an octagon or approximately octagonal shape larger than the heat dissipation sheet 171. The annular portion 173 has two pin holes 177 through which the pins 1115 of the base portion 111 pass.

[0212] The return portions 174 are arranged on every other one of the eight sides. The return portion 174 is folded back 180 degrees from the end of the annular portion 173 of the insulating sheet 172 in a U-shape. The folded portion 174 overlaps the outer edge of the light source substrate 151 while sandwiching the heat dissipation sheet 171 , and covers the side end surfaces of the heat dissipation sheet 171 and the outer peripheral edge of the light source substrate 151 .

[0213] The return portions 174 are located at four positions in the cross direction, but since the insulating sheet 172 is flexible, the return portions 174 can be attached so as to fold over the outer edge of the light source substrate 151 while bending the annular portion 173.

[0214] The insulating sheet 172 has a wiring portion 175 on its inner periphery. The wire-running portion 175 is a trapezoidal piece formed from the center of the inner side of the annular portion 173 toward the center. The wire-passing portion 175 has a wire-passing hole 176 in the center, which has the same shape as the board hole 153 . The wire-passing hole 176 is a hole into which the wire-passing packing 116 is fitted and through which the wire 1221 is passed. As shown in FIG. 27(e), the relationship between the diameters is as follows: Inner diameter of insulating sheet 172<outer diameter of light source substrate 151<outer diameter of heat dissipation sheet 171<outer diameter of insulating sheet 172<outer diameter of base portion 111

[0215] In this embodiment, the insulation properties are improved without increasing the amount of insulating sheet 172 used. Furthermore, by covering with the return portion 174, the insulating distance increases, improving the insulating properties. The return portion 174 may be provided on one or more sides, or may be provided on all eight sides.

[0216] ●Figure 28 (Modification of the bent portion 1111 of the base portion 111) As shown in FIG. 28, a bent portion 1113 may be formed in the mounting space 1114 between the two bent portions 1111. The bent portion 1113 is formed by bending the end of the base portion 111 into a 180-degree U-shape. The bent portion 1113 has a screw hole 1118 in the center, similar to that of the base portion 111, for fixing the base-side protruding portion 133 thereto. Although not shown, some or all of the bent portions 1111 may be bent into a 180-degree U-shape in the same manner as the bent portion 1113 . Although not shown, the top plate 113 may also be provided with a bent portion similar to the bent portion 1113 of the base portion 111 in FIG. ●Figure 29 (Wiring penetration part 119) FIG. 29 shows the wiring through portion 119. The wiring penetration portion 119 has a convex portion 114 and a packing 116 for passing wiring. The convex portion 114 has a box shape that rises from the base portion 111 in the opposite direction to the direction in which the light source substrate 151 is installed. The convex portion 114 provides a space 1141 between the rear surface of the base portion 111 and the light source substrate 151 . The convex portion 114 has a circular through-hole 115 in the center of the rectangular upper surface. The through hole 115 is a hole into which a packing 116 for passing wires is fitted. The wire-passing packing 116 has annular grooves 1161 on the outer periphery at the center of the top and bottom. The annular groove 1161 is an annular recess that fits into the through hole 115 . The upper portion of the wire-passing packing 116 above the annular groove 1161 is exposed on the convex portion 114 . The lower part of the wire-passing packing 116 below the annular groove 1161 is housed in the space 1141 .

[0217] The packing 116 for passing wires has the same number of wiring holes 117 as the number of wires 1221, and each wiring hole 117 passes only one wire. Furthermore, the inside of the wiring hole 117 is provided with unevenness to prevent the intrusion of water and moisture.

[0218] The wire-passing packing 116 has a protrusion 118 . The protruding portion 118 is a portion that protrudes beyond the base portion 111 toward the side where the light source substrate 151 is located. The horizontal cross-sectional shape of the protrusion 118 is the same as or smaller than the substrate hole 153 . The protrusion 118 is inserted into the wire-passing hole 176 of the sheet 170 (the heat dissipation sheet 171 and the insulating sheet 172 ) and the board hole 153 of the light source board 151 .

[0219] By configuring the protrusion 118 to be thicker than the light source substrate 151 , the wiring 1221 does not come into contact with the edge of the substrate hole 153 of the light source substrate 151 .

[0220] In this way, by providing a convex portion 114 on the base portion 111 and forming a space 1141 on the back side of the convex portion 114, a wire-passing gasket 116 can be placed on the base portion 111, and the wiring 1221 can be passed through without increasing the outer diameter of the light source substrate 151.

[0221] Although the embodiments of the present invention have been described above, two or more of these embodiments may be combined and implemented. Alternatively, one of these embodiments may be partially implemented. Alternatively, two or more of these embodiments may be partially combined and implemented. Note that the present invention is not limited to these embodiments, and various modifications are possible as needed. [Explanation of symbols]

[0222] 1 lighting fixture, 10 arm, 11 mounting hole, 12 upper hole, 13 lower hole, 100 light source unit, 110 heat sink, 111 base portion, 1111 bending portion, 1112 light source fixing portion, 1113 bending portion, 1114 mounting space, 1115 pin, 1118, 1119 screw hole, 112 fin portion, 1121 notch, 113 top plate portion, 1131 bending portion, 1132 fin fixing portion, 1138 concave portion, 1139 screw hole, 114 convex portion, 1141 space, 115 through hole, 116 wire passing packing, 1161 annular groove, 117 wiring hole, 118 protrusion, 119 wiring penetration portion, 120 power supply unit, 121 lighting circuit portion, 122 Harness, 1221 wiring, 1222 power supply board, 123 case part, 1231 case body, 12311 main case part, 12312 step part, 12313 case flange part, 12314 horizontal ring part, 12315 vertical band part, 1232 case packing, 12321 annular convex part, 12322 annular mountain part, 1233 bush, 129 case fixing device, 130 connecting part, 131 main connecting part, 1311 connecting opening, 1312 pillar part, 13121 connecting hole, 1313 center pressing part, 1314 frame side part, 1315 frame lower part, 1316 frame upper part, 13131 holding hole part, 132 top plate side protrusion part, 133 base side protrusion part, 134 Side protrusion, 1341 side pressing portion, 13411 pressing notch portion, 137 top plate fixing device, 138 hole portion, 139 fixing portion, 140 reinforcement portion, 141 hole cylinder portion, 142 reinforcement hole portion, 143 inclined portion, 147 upper plate, 1471 upper recess portion, 1472 notch portion, 148 back plate, 149 lower plate, 1481 lower recess portion, 150 light source portion, 151 light source board, 152 lens portion, 153 board hole, 154 board notch portion, 160 cover portion, 1601 main body portion, 1602, 1603 film, 161 cover, 1611 main cover, 1612 cover flange portion, 1613 inner protrusion portion, 1614 Convex portion, 1615 concave portion, 1616 step portion, 16121 horizontal flange portion, 16122 flange band portion, 162 cover packing, 1621 lid portion, 1622 concave portion, 1623 convex portion, 1624 annular convex portion, 1625 annular convex portion, 1626 screw hole, 1627 horizontal wall, 1628 arc wall, 1629 step portion, 169 cover fixing member, 170 sheet, 171 heat dissipation sheet, 1711Tongue portion, 172 insulating sheet, 173 ring portion, 174 return portion, 175 wire-passing portion, 176 wire-passing hole, 177 pin hole, 200 fixture mounting bracket, 210 fixture mounting portion, 211 fixture fixing hole, 220 fixture leg portion, 221 wall mounting portion, 222 side portion, 223 curved portion, 224 straight portion, 225 window, 230 fixture waist portion, 240 fixture waist portion, 241 wire hole, 250 gap, 291 bolt, 292 nut, 900 mounting portion, 901 fixture fixing device.

Claims

1. A light source unit; Wiring for supplying power to the light source unit; a base portion having an arrangement surface on which the light source unit is arranged, the base portion being a plate-like portion having a convex portion that rises in a direction opposite to the arrangement surface to form a space between the light source unit and the arrangement surface and that has a through hole through which the wiring passes; a wiring packing having a wiring hole formed therein through which the wiring passes, and a portion of the packing being accommodated in the space; A lighting fixture equipped with

2. The convex portion is The lighting fixture of claim 1 , wherein the light is formed by a portion of the base.

3. The part of the wire-passing packing is The lighting fixture according to claim 1 , wherein the projection faces the surface facing the space.

4. The wire-passing packing is The lighting fixture according to claim 1 , wherein the through hole is waterproofed together with the wiring.

5. The diameter of the wiring hole is The lighting fixture according to claim 1 , wherein the outer diameter of the lighting fixture is smaller than the outer diameter of the wiring.

Images