Lighting fixtures

Abstract

To improve electrical safety while reducing ground positions.SOLUTION: A luminaire A1 includes an LED module, a body B1, a lead wire 33 and a power source line L1, and a support member 5, the body B1 being mounted to a lighting pole P1 while supporting the LED module, the lead wire 33 and the power source line L1 serving for supplying electric power to the LED module, the support member 5 supporting the lead wire 33 and the power source line L1, the body B1 and the support member 5 being each formed of a material having conductivity, the support member 5 having a connection part 54 to which a ground line E1 for grounding is electrically connected, the support member 5 being electrically joined to the body B1.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present disclosure relates to lighting fixtures, and more particularly to lighting fixtures mounted on light poles. [Background technology]

[0002] As a conventional example, the lighting fixture described in Patent Document 1 is exemplified. The lighting fixture described in Patent Document 1 (hereinafter referred to as the conventional example) comprises a pole (lighting pole) erected on the ground outdoors and a lighting fixture body fixed to the upper end of the pole. A storage section for storing a lighting device for a light source and the like is provided in the lighting fixture body at a predetermined height from the ground on the pole.

[0003] The lamp body includes a light source unit, a cylindrical globe that covers the light source unit, a detachable cover that covers the top of the globe, and an outer shell that supports the globe and the shade.

[0004] The light source unit includes a plurality of LED light source units and a casting that supports the plurality of LED light source units.

[0005] The outer shell comprises an annular frame, a bottom, and a support bracket for supporting the cast body of the light source unit on the frame. A cylindrical mounting bracket is provided on the bottom, into which the upper end of the pole is inserted and fixed. The upper part of the mounting bracket opens into the globe, and a wiring support that extends into the pole is fixed to the upper part. Wiring that runs through the pole from the lighting device or commercial power source or the like is supported by the wiring support. The wiring is arranged in a wiring tube that extends from the mounting bracket to the light source unit. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2016-110931 A Summary of the Invention [Problem to be solved by the invention]

[0007] However, in the above-mentioned conventional example, since the casting and the wiring support are separated by a wiring pipe, it was necessary to ground both the casting and the wiring support in order to ensure the electrical safety of the lighting fixture.

[0008] An object of the present disclosure is to provide a lighting fixture that can reduce grounding points while improving electrical safety. [Means for solving the problem]

[0009] A lighting fixture according to one aspect of the present disclosure includes a light source, a main body that supports the light source and is attached to a lighting pole, a first conductor for supplying power to the light source, and a support member that supports the first conductor. The main body and the support member are made of a material having electrical conductivity. The support member is A main portion formed in a rectangular flat plate shape, a pair of side portions protruding in the same direction from both ends along the longitudinal direction of the main portion, and a first electric wire support portion supporting a first electric wire disposed inside the lighting pole; A connection where a second conductor for grounding is electrically connected and, and is electrically coupled to the body. The main portion is provided with the first wire support portion on a first surface facing the pair of side portions. Effect of the Invention

[0010] The lighting fixture of the present disclosure has the advantage of being able to reduce the number of grounding points while improving electrical safety. [Brief description of the drawings]

[0011] [Figure 1] FIG. 1 is a perspective view showing a lighting fixture according to an embodiment of the present disclosure, in a state where the lighting fixture is installed on a lighting pole. [Diagram 2] FIG. 2 is an exploded perspective view of the above lighting fixture with a portion thereof omitted. [Diagram 3] FIG. 3 is a perspective view showing the above lighting fixture with the second main body and the globe removed, as viewed from below. [Figure 4] FIG. 4 is a cross-sectional view showing the above lighting fixture installed on a lighting pole. [Diagram 5]Fig. 5A is a perspective view of the above lighting fixture during installation of a support member, and Fig. 5B is a perspective view of the above lighting fixture after installation of the support member has been completed. [Figure 6] FIG. 6 is a front view showing a first modification of the above lighting fixture. [Figure 7] FIG. 7 is a front view showing a second modification of the lighting fixture. [Figure 8] FIG. 8 is a front view showing a third modification of the lighting fixture. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, a lighting device according to an embodiment of the present disclosure will be described in detail with reference to the drawings. However, each figure described in the following embodiment is a schematic diagram, and the ratio of the size and thickness of each component does not necessarily reflect the actual dimensional ratio. Note that the configuration described in the following embodiment is merely an example of the present disclosure. The present disclosure is not limited to the following embodiment, and various modifications are possible depending on the design, etc., as long as the effects of the present disclosure can be achieved.

[0013] (1) Overview of the lighting fixture according to the embodiment A lighting device A1 according to the embodiment includes an LED module 30, a main body B1, an output wire 33 and a power line L1 for supplying power to the LED module 30, and a support member 5, as shown in FIG.

[0014] The main body B1 supports the LED module 30 and is attached to the lighting pole P1. The support member 5 supports the lead wire 33 and the power line L1. The lighting pole P1 is made of a metal material such as a steel plate and has a cylindrical shape with a hollow interior. However, the lighting pole P1 may also be formed into a square tube shape.

[0015] The main body B1 and the support member 5 are formed of a conductive material, for example, a metal material. The support member 5 has a connection part 54 to which a ground wire E1 for grounding is electrically connected. The support member 5 is electrically coupled to the main body B1.

[0016] Thus, in the lighting device A1 according to the embodiment, the main body B1 supporting the LED module 30 can be grounded via the ground wire E1 connected to the connection portion 54 of the support member 5 electrically coupled to the main body B1. In other words, according to the lighting device A1 according to the embodiment, it is possible to improve electrical safety while reducing the number of grounding points, compared to the case where the main body B1 and the support member 5 are grounded separately.

[0017] (2) Details of the lighting fixture according to the embodiment The lighting fixture A1 according to the embodiment (hereinafter, abbreviated as lighting fixture A1) includes a main body B1, four LED units 3, a globe 4, a support member 5, and a fall prevention member 6 (see FIGS. 1 and 2).

[0018] (2-1) LED unit All four LED units 3 have a common configuration. The LED unit 3 has an LED module 30, an LED holder 31, an LED mounting plate 32, and two output wires 33 (see FIG. 1).

[0019] The LED module 30 is a so-called COB (Chip On Board) type LED module in which multiple LED chips are mounted on one surface of a substantially square substrate and sealed with sealing resin. The LED module 30 emits illumination light from a light-emitting unit 300 that is circular in plan view when a direct current flows from a positive electrode (anode) to a negative electrode (cathode).

[0020] The LED holder 31 is formed in a rectangular frame shape from a synthetic resin material. The LED holder 31 holds the LED module 30 with the light emitting portion 300 of the LED module 30 exposed. The LED holder 31 has a positive electrode connector 310 and a negative electrode connector 311. The positive electrode connector 310 is electrically connected to the positive electrode of the LED module 30. The negative electrode connector 311 is electrically connected to the negative electrode of the LED module 30. One of the two lead wires 33 is electrically connected to the positive electrode connector 310, and the other lead wire 33 is electrically connected to the negative electrode connector.

[0021] The LED mounting plate 32 is made of a metal material and formed into a flat plate shape. The LED holder 31 is attached to the surface of the LED mounting plate 32. The LED mounting plate 32 is thermally connected to the LED module 30 via the LED holder 31. In other words, the LED mounting plate 32 serves as a heat sink for the LED module 30. The upper end portion of the LED mounting plate 32 is bent up so as to cover the LED module 30 from above (see FIG. 3).

[0022] (2-2) Main unit The main body B1 has a first main body 1 and a second main body 2. The first main body 1 and the second main body 2 are joined so as to be arranged vertically with the first main body 1 on top. In other words, the main body B1 is configured by joining the first main body 1 and the second main body 2 arranged vertically.

[0023] (2-2-1) First body The first main body 1 has a light source support portion 10 and a top plate portion 11. The light source support portion 10 and the top plate portion 11 are integrally formed by die casting of an aluminum alloy.

[0024] The light source support part 10 is formed in a bottomed rectangular tube shape with an open bottom surface. The LED units 3 are screwed to each of the four side surfaces 100 of the light source support part 10. The LED units 3 are fixed to the side surfaces 100 of the light source support part 10 in an orientation in which the positive electrode connector 310 of the LED holder 31 is disposed on top and the negative electrode connector 311 is disposed on the bottom.

[0025] A flat surface 102 is formed between two adjacent side surfaces 100 of the four side surfaces 100 of the light source support part 10. The flat surface 102 is formed in a rectangular shape with the longitudinal direction being the up-down direction. Two cable holders 12 are attached to the flat surface 102. The two cable holders 12 are arranged side by side with a gap between them in the up-down direction.

[0026] Furthermore, in the light source support part 10, a recess 103 is provided below the flat surface 102. The recess 103 is provided with a hole 104 that communicates with the internal space 101 of the light source support part 10 (see FIG. 4). A bushing 13 is fitted into this hole 104. The bushing 13 is made of an electrically insulating material such as silicone resin. The bushing 13 is provided with two electric wire insertion holes 130. As will be described later, the output wires 33 of the LED unit 3 are inserted into each of these two electric wire insertion holes 130 (see FIGS. 1 and 4).

[0027] Four first coupling parts 14, two second coupling parts, and one third coupling part 16 are provided in the internal space 101 of the light source support part 10 (see Figs. 3 and 4). Each of the four first coupling parts 14 is a bottomed screw hole that opens on the lower surface of the light source support part 10 (see Fig. 3). These four first coupling parts 14 play a role in coupling the second main body 2 to the first main body 1, as described below.

[0028] Each of the two second coupling parts is a bottomed screw hole that opens upward from the lower surface of the light source support part 10. These two second coupling parts serve to couple the support member 5 to the first main body 1 as described later.

[0029] The third coupling part 16 is a bottomed screw hole that opens upward from the lower surface of the light source support part 10 (see FIG. 4). The third coupling part 16 plays a role in coupling the fall prevention member 6 to the first main body 1 as described later.

[0030] The top plate 11 is formed in a disk shape. A recess 110 is formed around the entire circumference of the bottom surface of the top plate 11 at the outer circumferential edge of the bottom surface of the top plate 11 (see Figs. 3 and 4). As described below, the upper end of the globe 4 is housed in this recess 110 via a sealing member 111 (see Fig. 4). The sealing member 111 is formed in a circular ring shape from, for example, silicone resin.

[0031] A plurality of heat dissipation fins 112 are provided on the upper surface of the top plate 11. The plurality of heat dissipation fins 112 are formed in a parallelogram shape. The plurality of heat dissipation fins 112 are arranged radially around the center of the upper surface of the top plate 11 (see FIGS. 1 and 2).

[0032] Four female threads 113 are provided on the periphery of the upper surface of the top plate 11. These four female threads 113 are formed in a cylindrical shape with a bottom that opens to the upper surface of the top plate 11. A mounting screw 114 is screwed into each of the female threads 113.

[0033] Furthermore, one female thread portion 115 is provided in the center of the upper surface of the top plate portion 11. This female thread portion 115 is formed in a cylindrical shape with a bottom that opens to the upper surface of the top plate portion 11. A mounting screw 116 is screwed into the female thread portion 115.

[0034] (2-2-2) Second body The second main body 2 has an adaptor portion 20, a flange portion 21, and a reduced diameter portion 22. The adaptor portion 20, the flange portion 21, and the reduced diameter portion 22 are integrally formed by aluminum alloy die casting.

[0035] The adaptor part 20 is formed in a cylindrical shape with a bottom and an opening 200 on the lower surface (see FIG. 4). The internal space of the adaptor part 20 is divided into a first space 201 and a second space 202. The first space 201 has an inner diameter equal to the inner diameter of the opening 200 and is connected to the opening 200. The second space 202 has a truncated cone shape with a diameter decreasing toward the top and is connected to the upper end of the first space 201. Three pole receiving parts 23 are provided on the inner peripheral surface of the second space 202. Each of the three pole receiving parts 23 is formed in a stepped shape with three receiving surfaces 231, 232, and 233. The first receiving surface 231 is the lowest step, and the third receiving surface 233 is the highest step. These three receiving surfaces 231, 232, and 233 come into contact with the tips of three types of lighting poles with different outer diameters. For example, the first receiving surface 231 abuts against the tip of the lighting pole P1, which has the largest outer diameter (see FIG. 4).

[0036] The adapter part 20 has a screw hole at the bottom end thereof, which penetrates in the radial direction of the adapter part 20 (the thickness direction of the peripheral wall of the adapter part 20). The adapter part 20 is fixed to the lighting pole P1 by three fixing screws 24, which are screwed into these three screw holes one by one (see FIG. 4). It is preferable that the three fixing screws 24 are hexagon socket set screws.

[0037] The flange portion 21 is formed in an annular shape so as to protrude outward from the outer circumferential surface of the adapter portion 20 (see FIG. 2). A recess 210 is formed around the entire periphery of the upper surface of the flange portion 21 at the outer circumferential end of the upper surface of the flange portion 21 (see FIGS. 2 and 4). As described below, the lower end of the globe 4 is housed in this recess 210 via a sealing member 211 (see FIG. 4). The sealing member 211 is formed in an annular shape from, for example, silicone resin.

[0038] The reduced diameter portion 22 is provided on the upper part of the outer circumferential surface of the adaptor part 20. The reduced diameter portion 22 is configured to reduce the diameter of the outer circumferential surface of the adaptor part 20 upward. A total of eight inclined surfaces 220, 221 are formed on the outer circumferential surface of the reduced diameter portion 22 (see Figs. 2 and 4). These inclined surfaces 220, 221 are all flat surfaces having a parabolic contour, and are inclined upward toward the center of the adaptor part 20. However, four inclined surfaces 220 are formed larger than the other four inclined surfaces 221. The four inclined surfaces 220 are arranged so as to sandwich the inclined surfaces 221 one by one between them, and to be lined up in the circumferential direction of the outer circumferential surface of the reduced diameter portion 22.

[0039] A base portion 25 is provided on the upper surface of the reduced diameter portion 22. The base portion 25 is formed in an octagonal flat plate shape when viewed from above. A circular hole 222 that is connected to the second space 202 of the adaptor portion 20 penetrates the center of the base portion 25 (see Figs. 2 and 4). Four screw insertion holes 250 are provided around the hole 222 in the base portion 25. These four screw insertion holes 250 are arranged at equal intervals so as to surround the periphery of the hole 222. Each of these four screw insertion holes 250 penetrates to the second space 202 of the adaptor portion 20. A mounting screw 26 is inserted into each of the four screw insertion holes 250 from bottom to top (see Fig. 4).

[0040] (2-3) Support member The support member 5 has a main portion 50, a pair of side portions 51, a first electric wire support portion 52, a second electric wire support portion 53, and a connection portion 54 (see FIG. 2). The main portion 50 and the pair of side portions 51 are integrally formed from a conductive material, for example, a metal plate such as a hot-dip galvanized steel sheet.

[0041] The main portion 50 is formed in a long rectangular shape. The pair of side portions 51 are bent up in the same direction from both ends along the longitudinal direction (vertical direction) of the main portion 50. In the following description, of the two surfaces of the main portion 50, the surface facing the pair of side portions 51 may be referred to as a first surface 501, and the surface opposite the first surface 501 may be referred to as a second surface 502.

[0042] A fixing piece 510 is provided at the upper end of each of the pair of side parts 51 (see FIG. 3). These two fixing pieces 510 are formed in a flat plate shape and protrude outward from the upper end of each of the pair of side parts 51. Each of the two fixing pieces 510 has a circular hole penetrating through the fixing piece 510 in the thickness direction.

[0043] The first electric wire support part 52 has a base part 520, a pressing part 521, and two screws 522 (see FIG. 1). The base part 520 is formed in an elliptical column shape from a synthetic resin material such as PBT (polybutylene terephthalate) resin. A recess 523 is provided in the center of the front surface of the base part 520. A screw insertion hole penetrates each side of the recess 523 of the base part 520. The pressing part 521 is formed in an elliptical column shape from a synthetic resin material such as PBT resin, like the base part 520. A screw insertion hole penetrates each end of the pressing part 521 in the long axis direction. The two screws 522 are inserted into the screw insertion holes of the pressing part 521 and the screw insertion holes of the base part 520, and then screwed into a pair of screw holes provided at the lower end part of the main part 50, one by one.

[0044] The second electric wire support part 53 has a common configuration with the first electric wire support part 52, and includes a base part 530, a pressing part 531, and two screws 532 (see FIG. 3). The base part 530 is formed in an elliptical column shape from a synthetic resin material such as PBT resin. A recess 533 is provided in the center of the front surface of the base part 530. In addition, a screw insertion hole penetrates each side of the recess 533 of the base part 530. The pressing part 531 is formed in an elliptical column shape from a synthetic resin material such as PBT resin, like the base part 530. A screw insertion hole penetrates each end of the pressing part 531 in the longitudinal direction. The two screws 532 are inserted into the screw insertion hole of the pressing part 531 and the screw insertion hole of the base part 530, and then screwed into a pair of screw holes provided at the upper end part of the main part 50, one by one.

[0045] The connecting part 54 has a female screw provided in the lower part of the main part 50, immediately above the first electric wire support part 52, and a screw 55 that screws into the female screw. In other words, the connecting part 54 has a so-called screw terminal structure.

[0046] (2-4) Fall prevention parts The fall prevention member 6 has a wire 60, a fall prevention bar 61, and a screw joint 62 (see FIG. 2). The wire 60 is made of metal. A nipple is provided on each end of the wire 60. The nipple on one end is screwed to the third connecting portion 16 of the first main body 1 (see FIG. 4). In other words, the wire 60 is connected to the first main body 1 by being screwed to the third connecting portion 16. The fall prevention bar 61 is connected to the nipple on the other end via a screw joint 62. The fall prevention bar 61 is formed in a long, thin rod shape from a metal material.

[0047] (2-5) Gloves The globe 4 is made of a light-transmitting synthetic resin such as an acrylic resin and has a cylindrical shape with both ends open (see FIG. 2). The globe 4 may be transparent, or may be made translucent by mixing a filler into the synthetic resin. The globe 4 may also be made of a light-transmitting material other than synthetic resin, such as quartz glass.

[0048] (2-6) Assembly Procedure Next, a procedure for assembling the lighting device A1 will be described. Note, however, that the procedure for assembling the lighting device A1 described below is merely an example, and the order of some steps may be changed.

[0049] First, a worker assembling the lighting fixture A1 screws one LED unit 3 onto each of the four side surfaces 100 of the light source support part 10. Then, the worker electrically connects the positive connector 310 and the negative connector 311 of the LED holder 31 of each of two adjacent LED units 3 via the lead wire 33. However, the worker inserts the lead wire 33 electrically connected to the positive connector 310 of the LED holder 31 located to the left of the flat surface 102 of the light source support part 10 into the wire insertion hole 130 on the upper side of the bushing 13 and draws it out of the light source support part 10 from the open end of the bottom surface of the first main body 1 (see FIG. 1). In addition, the worker inserts the outlet wire 33, which is electrically connected to the negative connector 311 of the LED holder 31 located immediately to the right of the flat surface 102 of the light source support part 10, into the wire insertion hole 130 on the lower side of the bushing 13, and pulls it out from the open end on the lower surface of the first main body 1 to the outside of the light source support part 10.

[0050] The worker screws the loop at one end of the wire 60 into the third connecting portion 16 of the first body 1. The worker screws the fixing screws 56, which have been inserted into the respective screw insertion holes of the pair of fixing pieces 510 of the support member 5, into the two second connecting portions, thereby fastening the pair of fixing pieces 510 to the first body 1 (see FIG. 3). Then, the worker supports the two lead wires 33 drawn out from the open end on the bottom surface of the first body 1 on the second wire support portion 53.

[0051] Next, the worker places the sealing member 211 in the recess 210 of the flange portion 21 of the second main body 2, and then inserts the lower end of the globe 4 from above the sealing member 211 into the recess 210. The worker also places the sealing member 111 in the recess 110 of the top plate portion 11, and then inserts the wire 60 and the support member 5 into the hole 222 of the reduced diameter portion 22 from above the second main body 2, and inserts the upper end of the globe 4 into the recess 110 from below the sealing member 111.

[0052] Then, the worker inserts the mounting screws 26 one by one into the four screw insertion holes 250 provided in the base portion 25 of the second body 2, and screws these four mounting screws 26 one by one into the four first coupling portions 14 of the first body 1 (see FIG. 3). As a result, the first body 1 and the second body 2 are fastened together by the four mounting screws 26. In addition, the globe 4 is supported by the main body B1 so as to be sandwiched between the top plate portion 11 of the first body 1 and the flange portion 21 of the second body 2 from above and below.

[0053] Finally, the worker connects a fall prevention bar 61 to the ring at the other end of the wire 60 via a screw joint 62.

[0054] With the above steps, assembly of the lighting fixture A1 is completed.

[0055] (2-7) Installation procedure Next, a procedure for installing the lighting fixture A1 on the lighting pole P1 will be described. Note that the procedure described below is only an example, and the order of some steps may be changed.

[0056] First, a worker performing the installation work supports the power cable M1 on the first electric wire support part 52 of the support member 5 (see FIG. 5A). The power cable M1 is a three-core electric cable including two power lines L1, a positive electrode and a negative electrode, and one ground line E1. The worker electrically and mechanically connects the conductor of the positive power line L1 and the conductor of the positive electrode outlet wire 33 with a crimp sleeve or the like, and then wraps the conductor of the connected power line L1 and the conductor of the outlet wire 33 with an insulating tape 57 for protection (see FIG. 5A). Similarly, the worker electrically and mechanically connects the conductor of the negative power line L1 and the conductor of the negative electrode outlet wire 33 with a crimp sleeve or the like, and then wraps the conductor of the connected power line L1 and the conductor of the outlet wire 33 with an insulating tape 57 for protection. Furthermore, the worker electrically and mechanically connects the ground line E1 of the power cable M1 to the connection part 54 of the support member 5. Then, the worker fixes the two power lines L1 and the two output lines 33 to the support member 5 using insulating tape 57 or the like (see FIG. 5B).

[0057] Next, the worker inserts the fall prevention bar 61 and the power cable M1 into the interior of the lighting pole P1 through the opening at the tip of the lighting pole P1 standing on the ground. At this time, the power cable M1 is located on the first surface 501 side of the main part 50 of the support member 5, and the wire 60 is located on the second surface 502 side of the main part 50 of the support member 5, so that the power cable M1 and the wire 60 are unlikely to become entangled.

[0058] The worker inserts the tip of the lighting pole P1 into the adapter part 20 of the second main body 2 until the tip of the lighting pole P1 hits the pole receiving part 23 of the second main body 2 (see FIG. 4). However, in the illustrated example, since the lighting pole P1 is attached to the lighting pole P1 with the largest diameter, the tip of the lighting pole P1 hits the first receiving surface 231 at the lowest stage. Then, the worker fixes the adapter part 20 to the lighting pole P1 by screwing the fixing screws 24 one by one into the three screw holes provided at the lower end of the adapter part 20 (see FIG. 4).

[0059] Finally, the worker electrically connects the two secondary output wires of the power supply unit (not shown) installed inside the lighting pole P1 to the two power wires L1 of the power cable M1, and also grounds the ground wire E1 of the power cable M1.

[0060] The installation of lighting fixture A1 is completed through the above steps.

[0061] (2-8) Operation of lighting fixtures The lighting fixture A1 is supplied with direct current from a power supply device installed inside the lighting pole P1 via a power cable M1. The direct current supplied from the power supply device flows through the four LED modules 30 connected in series via the lead wire 33. As a result, the four LED modules 30 are turned on. Most of the illumination light emitted from these four LED modules 30 passes directly through the globe 4 and is irradiated into the illumination space. In addition, some of the illumination light emitted from the four LED modules 30 is reflected by the surface (inclined surfaces 220, 221) of the reduced diameter portion 22 of the second main body 2 and the lower surface of the top plate portion 11 of the first main body 1, and then passes through the globe 4 and is irradiated onto the ground.

[0062] (3) Modifications Next, several modified examples of the lighting fixture according to the embodiment will be described. However, in each of the modified examples described below, the same reference numerals will be used to designate components common to the lighting fixture A1 according to the embodiment, and illustrations and descriptions thereof will be omitted as appropriate.

[0063] (3-1) Variation 1 The lighting fixture A1 of the first modification is obtained by attaching an optional part 7 to the lighting fixture A1 according to the embodiment. The optional part 7 is, for example, a reflector 70 and a light shielding plate 71 (see FIG. 6). The optional part 7 is fixed to the top plate part 11 by at least one mounting screw 114 which is screwed into at least one of four female threads 113 provided on the top plate part 11 of the first main body 1.

[0064] The reflecting head 70 is made of a metal material and has a generally truncated cone shape. A circular window is provided in the bottom surface of the reflecting head 70. Four screw insertion holes are provided around the window in the bottom surface of the reflecting head 70.

[0065] Thus, reflector 70 is placed over top plate 11 with heat dissipation fins 112 inserted through the window, and mounting screws 114, one each inserted through four screw insertion holes on the bottom surface, are screwed one each into four female threads 113 of top plate 11, thereby attaching reflector 70 to main body B1. Thus, lighting fixture A1 of modification 1 can increase the amount of illumination light irradiated to the ground by reflecting illumination light that passes through globe 4 and is emitted diagonally upward to reflector 70.

[0066] The light shielding plate 71 is formed into a semi-cylindrical surface shape by a metal plate. The light shielding plate 71 is attached to the main body B1 by being screwed to three of the four female threads 113 of the top plate portion 11 and a female thread (not shown) provided on the lower surface of the adapter portion 20 of the second main body 2. Thus, the lighting fixture A1 of the first modification can suppress the occurrence of a problem (light pollution) such as the illumination light being irradiated onto a window of a house by partially blocking the illumination light with the light shielding plate 71.

[0067] The optional parts 7 are not limited to the reflector 70 and the light shielding plate 71. All the optional parts 7 may be attached to the lighting fixture A1 individually, or two or more types of optional parts 7 may be attached to the lighting fixture A1 together as shown in FIG.

[0068] (3-2) Variation 2 The lighting device A2 of the second modification is formed in a spherical shape as a whole, as shown in Fig. 7. In the second modification, the globe 4 is formed in a semi-spherical shell shape from a translucent synthetic resin such as an acrylic resin. The main body B1 of the second modification is provided with a cover 17 formed in a semi-spherical shell shape from a metal material. The top plate portion 11 of the first main body 1 is formed in a disk shape having a diameter approximately equal to that of the globe 4 and the cover 17. Thus, the lighting device A2 of the second modification is formed in a spherical shape by combining the cover 17 and the globe 4 with the top plate portion 11.

[0069] (3-3) Variation 3 The lighting device A3 of the modified example 3 is formed in a hemispherical shape as a whole, as shown in Fig. 8. The globe 4 of the modified example 3 is formed in a hemispherical shell shape from a translucent synthetic resin such as an acrylic resin, similar to the globe 4 of the modified example 2. The top plate portion 11 of the first main body 1 is formed in a disk shape having a diameter approximately equal to that of the globe 4, similar to the modified example 2. Thus, the lighting device A3 of the modified example 3 is formed in a hemispherical shape by combining the disk-shaped top plate portion 11 and the globe 4.

[0070] In the lighting fixture A1 according to the above-described embodiment and the lighting fixtures A1-A3 according to Modifications 1-3, a power supply device that supplies DC power to the LED unit 3 may be built into the main body B1.

[0071] (4) Advantages of the lighting fixture according to the embodiment In the lighting fixture A1 according to the embodiment (including the lighting fixtures A1, A2, and A3 of modification 1-3; the same applies below), the main body B1 (first main body 1) and the support member 5 are mechanically and electrically coupled, and the ground wire E1 is electrically connected to the connection portion 54 of the support member 5. In other words, the lighting fixture A1 according to the embodiment can improve electrical safety by grounding the main body B1 (first main body 1 and second main body 2) through the support member 5. Moreover, the lighting fixture A1 according to the embodiment does not require an installation structure to electrically connect the main body B1 and the support member 5 simply by electrically connecting the ground wire E1 to the connection portion 54 provided on the support member 5.

[0072] As a result, according to the lighting fixture A1 according to this embodiment, it is possible to reduce the number of grounding points and improve electrical safety, compared to a case in which the main body B1 and the support member 5 are grounded separately.

[0073] Furthermore, in the lighting fixture A1 according to the embodiment, the main body B1 (first main body 1) and the support member 5 are fastened together by a conductive fixing screw 56. That is, in the lighting fixture A1 according to the embodiment, the first main body 1 and the support member 5 are electrically connected together through the fixing screw 56 for fastening the support member 5 to the first main body 1. Therefore, in the lighting fixture A1 according to the embodiment, the main body B1 and the support member 5 can be mechanically and electrically coupled together using the fixing screw 56, thereby improving the workability of the assembly work.

[0074] Furthermore, in the lighting device A1 according to the embodiment, since the second body 2 is joined to the lower part of the first body 1, the first body 1 can be supported by the second body 2. In other words, in the lighting device A1 according to the embodiment, the second body 2 supports the first body 1 from below, thereby improving the strength of the body B1.

[0075] In addition, in the lighting device A1 of the embodiment, by fastening the support member 5 to the first body 1, the amount by which the support member 5 protrudes below the main body B1 can be reduced, compared to when the support member 5 is fastened to the second body 2, thereby making it possible to reduce the size.

[0076] Here, the support member 5 may be integrally formed with the main body B1 by die-casting an aluminum alloy. In the lighting device A1 according to the embodiment, the support member 5 is integrally formed with the main body B1, which simplifies the assembly work.

[0077] Furthermore, in the lighting fixture A1 according to the embodiment, the support member 5 has a first electric wire support part 52 that supports the power cable M1 and a second electric wire support part 53 that supports the output wire 33. Since the lighting fixture A1 according to the embodiment has the first electric wire support part 52 and the second electric wire support part 53, it is possible to reduce the tension acting on the power cable M1 and the output wire 33 and prevent breakage of the power cable M1 and the output wire 33.

[0078] Incidentally, when a power supply device that supplies DC power to the LED unit 3 is installed inside the lighting pole P1, the power cable M1 is located below the lead wire 33. Therefore, in the lighting fixture A1 according to the embodiment, the second electric wire support part 53 is disposed above the first electric wire support part 52 so that the power cable M1 and the lead wire 33 do not cross each other. As a result, the lighting fixture A1 according to the embodiment can improve the workability of the work of connecting the power cable M1 and the lead wire 33.

[0079] Furthermore, in the lighting device A1 according to the embodiment, the connection portion 54 is located between the first electric wire supporting portion 52 and the second electric wire supporting portion 53 in the support member 5 (see FIG. 5A). Thus, in the lighting device A1 according to the embodiment, the support member 5 can be made smaller in size than in a case where the connection portion 54 is not provided between the first electric wire supporting portion 52 and the second electric wire supporting portion 53.

[0080] Incidentally, the support member 5 in the embodiment has a pair of side portions 51 protruding in the same direction from both ends along the longitudinal direction of the main portion 50, and therefore the bending strength of the main portion 50 can be improved compared to a case where the main portion 50 does not have the pair of side portions 51. Also, the first electric wire support portion 52 and the second electric wire support portion 53 are provided on the first surface 501 of the main portion 50 facing the pair of side portions 51, respectively. Therefore, in the lighting fixture A1 according to the embodiment, the pair of side portions 51 can prevent the power cable M1 supported by the first electric wire support portion 52 and the output wire 33 supported by the second electric wire support portion 53 from protruding outside the main portion 50.

[0081] Furthermore, in the lighting fixture A1 according to the embodiment, the fall prevention member 6 is disposed so as to face the second surface 502 of the main part 50 of the support member 5. The second surface 502 of the main part 50 is the surface opposite (backside) the first surface 501 of the main part 50. Thus, by disposing the fall prevention member 6 so as to face the second surface 502 of the main part 50, the lighting fixture A1 according to the embodiment can prevent the fall prevention member 6 (particularly the wire 60) from becoming entangled with the power cable M1 and the output wire 33.

[0082] (5) Summary A lighting fixture (A1; A2; A3) according to a first aspect of the present disclosure includes a light source (LED module 30), a main body (B1), a first conductor (lead wire 33, power line L1), and a support member (5). The main body (B1) supports the light source and is attached to a lighting pole (P1). The first conductor is for supplying power to the light source. The support member (5) supports the first conductor. The main body (B1) and the support member (5) are formed of a material having electrical conductivity. The support member (5) has a connection portion (54) to which a second conductor (ground wire E1) for grounding is electrically connected. The support member (5) is electrically coupled to the main body (B1).

[0083] In the lighting fixtures (A1; A2; A3) according to the first aspect, the main body (B1) supporting the light source can be grounded via a ground wire (E1) connected to a connection portion (54) of the support member (5) electrically coupled to the main body (B1). As a result, the lighting fixtures (A1; A2; A3) according to the first aspect can reduce the number of grounding points and improve electrical safety compared to a case in which the main body (B1) and the support member (5) are grounded separately.

[0084] A lighting fixture (A1; A2; A3) according to a second aspect of the present disclosure can be realized by combining with the first aspect. In the lighting fixture (A1; A2; A3) according to the second aspect, it is preferable that the support member (5) is fastened to the main body (B1) by a fastening member (fixing screw 56) having electrical conductivity.

[0085] In the lighting fixtures (A1; A2; A3) according to the second aspect, the main body (B1) and the support member (5) can be mechanically and electrically coupled together using fastening members, thereby improving the workability of the assembly work.

[0086] A lighting fixture (A1; A2; A3) according to a third aspect of the present disclosure can be realized by combining with the first or second aspect. In the lighting fixture (A1; A2; A3) according to the third aspect, the main body (B1) preferably has a first main body (1) that supports the light source and a second main body (2) that is attached to the lighting pole (P1). The second main body (2) is preferably coupled to the lower part of the first main body (1).

[0087] In the lighting fixtures (A1; A2; A3) according to the third aspect, the second body (2) supports the first body (1) from below, thereby improving the strength of the body (B1).

[0088] A lighting device (A1; A2; A3) according to a fourth aspect of the present disclosure can be realized in combination with the third aspect. In the lighting device (A1; A2; A3) according to the fourth aspect, it is preferable that the support member (5) is fastened to the first body (1).

[0089] The lighting fixtures (A1; A2; A3) according to the fourth aspect can be made smaller in size by reducing the amount by which the support member (5) protrudes below the main body (B1) compared to when the support member (5) is fastened to the second main body (2).

[0090] A lighting device (A1; A2; A3) according to a fifth aspect of the present disclosure can be realized by combining with the first aspect. In the lighting device (A1; A2; A3) according to the fifth aspect, it is preferable that the support member (5) is formed integrally with the main body (B1).

[0091] The lighting fixtures (A1, A2, A3) according to the fifth aspect can simplify the assembly work.

[0092] A lighting fixture (A1; A2; A3) according to a sixth aspect of the present disclosure can be realized by combining with any of the first to fifth aspects. In the lighting fixture (A1; A2; A3) according to the sixth aspect, the support member (5) preferably has a first electric wire support part (52) that supports a first electric wire (power cable M1) arranged inside the lighting pole (P1).

[0093] The lighting fixtures (A1; A2; A3) according to the sixth aspect can prevent breakage of the first electric wire by reducing the tension acting on the first electric wire by the first electric wire support portion (52).

[0094] A lighting fixture (A1; A2; A3) according to a seventh aspect of the present disclosure can be realized by combining with the sixth aspect. In the lighting fixture (A1; A2; A3) according to the seventh aspect, the support member (5) preferably has a second electric wire support part (53) that supports a second electric wire (lead wire 33) arranged inside the main body (B1).

[0095] The lighting fixtures (A1, A2, A3) according to the seventh aspect can reduce the tension acting on the second electric wire, thereby preventing breakage of the second electric wire.

[0096] A lighting fixture (A1; A2; A3) according to an eighth aspect of the present disclosure can be realized by combining with the seventh aspect. In the lighting fixture (A1; A2; A3) according to the eighth aspect, in the support member (5), the second wire support portion (53) is preferably located above the first wire support portion (52).

[0097] The lighting fixtures (A1; A2; A3) according to the eighth aspect can improve the workability of connecting the first electric wire and the second electric wire by preventing the first electric wire and the second electric wire from crossing each other.

[0098] A lighting fixture (A1; A2; A3) according to a ninth aspect of the present disclosure can be realized by combining with the eighth aspect. In the lighting fixture (A1; A2; A3) according to the ninth aspect, in the support member (5), the connection portion (54) is preferably located between the first wire support portion (52) and the second wire support portion (53).

[0099] In the lighting fixtures (A1; A2; A3) of the ninth aspect, the support member (5) can be made smaller than when the connection portion (54) is not provided between the first wire support portion (52) and the second wire support portion (53).

[0100] A lighting fixture (A1; A2; A3) according to a tenth aspect of the present disclosure can be realized by combining with any one of the sixth to ninth aspects. In the lighting fixture (A1; A2; A3) according to the tenth aspect, the support member (5) preferably has a main portion (50) formed in a rectangular flat plate shape and a pair of side portions (51) protruding in the same direction from both ends along the longitudinal direction of the main portion (50). It is preferable that the main portion (50) has a first surface (501) facing the pair of side portions (51) provided with a first wire support portion (52).

[0101] In the lighting fixture (A1; A2; A3) of the tenth aspect, the pair of side portions (51) can prevent the first electric wire supported by the first electric wire support portion (52) from protruding outside the main portion (50).

[0102] A lighting fixture (A1; A2; A3) according to an eleventh aspect of the present disclosure can be realized in combination with the tenth aspect. In the lighting fixture (A1; A2; A3) according to the eleventh aspect, it is preferable that a second electric wire support part (53) for supporting a second electric wire arranged inside the main body (B1) is provided on the first surface (501) of the main part (50).

[0103] The lighting fixture (A1; A2; A3) of the eleventh aspect can prevent the second electric wire supported by the second electric wire support portion (53) from protruding outside the main portion (50) by the pair of side portions (51).

[0104] A lighting fixture (A1; A2; A3) according to a twelfth aspect of the present disclosure can be realized by combining with the tenth or eleventh aspect. In the lighting fixture (A1; A2; A3) according to the twelfth aspect, it is preferable to include a fall prevention member (6) that prevents the main body (B1) from falling off the lighting pole (P1). The fall prevention member (6) is preferably arranged in the main part (50) of the support member (5) so as to face a second surface (502) opposite to the first surface (501).

[0105] The lighting fixtures (A1, A2, A3) according to the twelfth aspect can prevent the fall prevention member (6) from becoming entangled with the first electric wire and the second electric wire. [Explanation of symbols]

[0106] A1 Lighting equipment A2 Lighting equipment A3 Lighting equipment P1 Lighting pole L1 Power line (first conductor) E1 Ground Wire (Second Conductor) B1 Main Unit M1 Power Cable (First Wire) 1. First Body 2. Second Body 5 Supporting member 6 Fall prevention parts 30 LED module (light source) 33 Lead wire (first conductor: second wire) 50 Main Section 51 Side 52 1st wire support part 53 2nd wire support part 54 Connection 56 Fixing screw (fastening member) 501 1st page 502 2nd page

Claims

1. A light source; A main body that supports the light source and is attached to a lighting pole; a first conductor for supplying power to the light source; a support member that supports the first conductor; Equipped with the main body and the support member are formed of a material having electrical conductivity; The support member has a main portion formed in a rectangular flat plate shape, a pair of side portions protruding in the same direction from both ends along the longitudinal direction of the main portion, a first electric wire support portion supporting a first electric wire disposed inside the lighting pole, and a connection portion to which a second conductor for grounding is electrically connected, and is electrically connected to the main body; The first wire support portion is provided on a first surface of the main portion facing the pair of side portions. Lighting fixtures.

2. The support member is fastened to the main body by a fastening member having electrical conductivity.

2. A lighting device according to claim 1.

3. The body includes: a first body supporting the light source; A second body attached to the lighting pole; having The second body is coupled to a lower portion of the first body.

3. A lighting fixture according to claim 1 or 2.

4. The support member is fastened to the first body.

4. A lighting device according to claim 3.

5. The support member is integrally formed with the body. A lighting device according to any one of claims 1 to 4.

6. The support member has a second wire support portion that supports a second wire disposed inside the main body, A lighting device according to any one of claims 1 to 5.

7. In the support member, the second wire support portion is located above the first wire support portion, 7. A lighting device according to claim 6.

8. In the support member, the connection portion is located between the first wire support portion and the second wire support portion.

8. A lighting device according to claim 7.

9. In the main portion, a second electric wire support portion supporting a second electric wire arranged inside the main body is provided on the first surface, A luminaire according to any one of claims 1 to 8.

10. A fall prevention member is provided to prevent the main body from falling off the lighting pole, The fall prevention member is disposed in the main portion of the support member so as to face a second surface opposite to the first surface. A luminaire according to any one of claims 1 to 9.

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