Lighting fixtures

Abstract

To provide a lighting fixture capable of reducing the number of fitting members to be used.SOLUTION: A lighting fixture A1 includes an LED unit, a body 1 holding the LED unit, and an arm 3 supporting the body 1. The arm 3 includes: a fixation part 30 formed into a long plate-like shape; a pair of projection parts projecting in a thickness direction of the fixation part 30 from longitudinal both ends of the fixation part 30. Each tip end of the pair of projection parts is connected with the body 1. The fixation part 30 includes: a first fitting part 31 to which a fitting member 7 to be fitted to a building material (beam 8) of a building is fitted in a first orientation; and a second fitting part to which the fitting member 7 is fitted in a second orientation intersecting with the first orientation.SELECTED DRAWING: Figure 8

Description

[Technical field]

[0001] The present disclosure relates to lighting fixtures, and more particularly to lighting fixtures that are installed high up indoors. [Background technology]

[0002] The lighting fixture described in Patent Document 1 is taken as an example of a conventional lighting fixture. The lighting fixture described in Patent Document 1 (hereinafter referred to as the conventional example) has an arm, a power supply unit, a top plate, a support framework, a light source unit, and a cover. The arm is used to attach the lighting fixture to a ceiling or a beam. Both ends of the arm are attached to the center of both sides of the lighting fixture. The arm is U-shaped. Both ends of the arm have arc-shaped holes and axial holes at the top and bottom. The arm is held rotatably relative to the lighting fixture, with a bolt inserted through the axial hole as a fulcrum.

[0003] The arm has a mounting surface with a slotted mounting hole at each end in the longitudinal direction. The arm is mounted directly to a ceiling or beam by bolts inserted into the two mounting holes, or indirectly via another mounting member. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2017-41326 A Summary of the Invention [Problem to be solved by the invention]

[0005] In the above-mentioned conventional example, the number of mounting members required to mount the arm to the mounting location differs depending on the mounting location of the arm.

[0006] An object of the present disclosure is to provide a lighting fixture that can reduce the number of mounting parts used. [Means for solving the problem]

[0007] A lighting fixture according to one aspect of the present disclosure includes a light source, a main body that holds the light source, and a support member that supports the main body. The support member has a fixing portion formed in a long plate shape and a pair of protruding portions protruding from both ends of the fixing portion in the longitudinal direction. Each tip of the pair of protruding portions is connected to the main body. The fixing portion has a first mounting portion to which a mounting member for mounting to a construction material of a building is attached in a first orientation, and a second mounting portion to which the mounting member is attached in a second orientation intersecting the first orientation. Effect of the Invention

[0008] The lighting fixture of the present disclosure has the advantage of being able to reduce the number of mounting members used. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a perspective view of a lighting fixture according to an embodiment of the present disclosure. [Diagram 2] FIG. 2 is an exploded perspective view of the above lighting fixture. [Diagram 3] FIG. 3 is a front view of the above lighting fixture. [Figure 4] FIG. 4 is a right side view of the above lighting fixture. [Diagram 5] FIG. 5 is a plan view of the above lighting fixture. [Figure 6] FIG. 6 is a bottom view of the above lighting fixture. [Figure 7] FIG. 7 is a side view, with some parts omitted, of a building in which the above lighting fixture is installed. [Figure 8] FIG. 8 is a perspective view showing the above lighting fixture in an installation state in a first orientation. [Figure 9] FIG. 9 is a perspective view showing the mounting state of the lighting fixture in the second orientation. [Figure 10] FIG. 10 is a front view of the above lighting fixture attached to an inclined beam. [Figure 11]FIG. 11 is a front view of the above lighting fixture attached to an inclined beam. [Figure 12] Fig. 12A is a plan view of a fixing part in Variation 1 of the above lighting fixture, Fig. 12B is a plan view of a fixing part in Variation 2 of the above lighting fixture, Fig. 12C is a plan view of a fixing part in Variation 3 of the above lighting fixture, and Fig. 12D is a plan view of a fixing part in Variation 4 of the above lighting fixture. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] 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 one 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.

[0011] (1) Overview of the lighting fixture according to the embodiment The luminaire A1 according to the embodiment is a luminaire for so-called high ceiling lighting (also called a high ceiling luminaire). A high ceiling luminaire is a luminaire that is attached to a ceiling beam or the like to illuminate the floor surface in buildings with a ceiling height (10 m or more) higher than the ceiling height (2 m to 3 m) of houses and office buildings, such as gymnasiums and warehouses.

[0012] A lighting fixture A1 according to the embodiment includes an LED unit 2 which is a light source, a main body 1 which holds the LED unit 2, and a support member (arm 3) which supports the main body 1 (see FIGS. 1 and 2).

[0013] The arm 3 has a fixed part 30 formed in a long plate shape, and a pair of protruding parts 33 protruding from both ends in the longitudinal direction of the fixed part 30. The tip of each of the pair of protruding parts 33 is connected to the main body 1 (see FIG. 1).

[0014] The fixing part 30 has a first mounting part 31 and a second mounting part 32. The first mounting part 31 has a mounting member 7 for mounting to a construction material of a building (e.g., a ceiling beam 8) attached thereto in a first orientation. The second mounting part 32 has the mounting member 7 attached thereto in a second orientation intersecting the first orientation.

[0015] The building is, for example, a factory, warehouse, gymnasium, etc. that employs a gable-frame structure framework (see FIG. 7). The mounting member 7 is attached to a beam 8 in the ceiling of the building that is made of, for example, H-shaped steel (see FIG. 8).

[0016] The mounting member 7 includes a hanger 70 to which the arm 3 is attached, a pair of hooks 71, a pair of bolts 72, etc. The hanger 70 is formed of lip channel steel (also called C-shaped steel or C-channel steel). A plurality of bolt insertion holes are provided in the bottom plate of the hanger 70. These bolt insertion holes are aligned in a row along the longitudinal direction of the hanger 70.

[0017] The pair of hook fittings 71 have hook-shaped portions exposed from the grooves of the hanger 70. Each of the pair of hook fittings 71 is engaged with an edge (lip) of the groove of the hanger 70 so as to be movable along the longitudinal direction of the hanger 70. The pair of bolts 72 are screwed from above into screw holes provided at the tips of the pair of hook fittings 71, respectively.

[0018] The mounting member 7 is attached to a beam 8 (H-shaped steel) by fastening the flanges of the beam 8 (H-shaped steel) inserted between the ends of each of a pair of hanging fittings 71 and the hanger 70 with a pair of bolts 72 .

[0019] Thus, in the lighting fixture A1 according to the embodiment, the mounting member 7 can be attached in a first orientation by the first mounting portion 31 of the fixing portion 30 (see FIG. 8). Also, in the lighting fixture A1 according to the embodiment, the mounting member 7 can be attached in a second orientation by the second mounting portion 32 of the fixing portion 30 (see FIG. 9). That is, in the lighting fixture A1 according to the embodiment, the mounting member 7 can be attached to the fixing portion 30 of the arm 3 in two different orientations (first orientation, second orientation) for one mounting member 7. As a result, the lighting fixture A1 according to the embodiment can reduce the number of mounting members 7 used. Also, in the lighting fixture A1 according to the embodiment, the number of mounting members 7 used can be reduced, thereby improving the workability of the installation work.

[0020] (2) Details of the lighting fixture according to the embodiment A lighting fixture A1 according to an embodiment (hereinafter, abbreviated as lighting fixture A1) will be described in detail with reference to the drawings. In the following description, unless otherwise specified, the up-down, front-back, and left-right directions indicated by arrows in FIG. 1 are defined as the up-down, front-back, and left-right directions of the lighting fixture A1.

[0021] The lighting fixture A1 includes a main body 1, an LED unit 2, and an arm 3. The lighting fixture A1 further includes a panel 4 and a power supply unit 5 (see FIGS. 1 to 6).

[0022] (2-1) LED unit The LED unit 2 has a plurality of LEDs (Light Emitting Diodes) 20 and a substrate 21 on which the plurality of LEDs 20 are mounted (see FIG. 2). The plurality of LEDs 20 are each a packaged white LED for illumination, and are mounted in rows and columns on the bottom surface of the rectangular substrate 21.

[0023] (2-2) Main unit The main body 1 has a base 10, a pair of first support plates 11, a pair of second support plates 12, and a plurality of heat sink plates 13 (see FIGS. 1 and 2).

[0024] The base 10 is formed into a rectangular flat plate from a metal plate such as an aluminum plate (see FIG. 2). The strength of the base 10 is improved by bending all four sides. The LED unit 2 is fixed to the bottom surface of the base 10 with screws (see FIG. 2).

[0025] Each of the pair of first support plates 11 is formed into a rectangular flat plate shape using a metal plate such as an aluminum plate. One end (lower end) of each of the pair of first support plates 11 in the longitudinal direction is bent at a substantially right angle. The lower end of each of the pair of first support plates 11 is screwed to the center of the longitudinal direction (left-right direction) at both ends (front end and rear end) in the short side direction of the base 10 (see FIG. 2). In other words, each of the pair of first support plates 11 stands upright from the center of the longitudinal direction (left-right direction) at both ends (front end and rear end) in the short side direction of the base 10.

[0026] Each of the pair of second support plates 12 is formed into a rectangular flat plate shape by a metal plate such as an aluminum plate. However, each of the pair of second support plates 12 is bent at an obtuse angle at a position above the center in the longitudinal direction (vertical direction). In addition, one end (lower end) of each of the pair of second support plates 12 in the longitudinal direction is bent at a substantially right angle. The lower end of each of the pair of second support plates 12 is screwed to the center of the short side direction (front-rear direction) at both ends (left end and right end) in the longitudinal direction of the base 10 (see FIG. 2). In other words, each of the pair of second support plates 12 stands upright from the center of the short side direction (front-rear direction) at both ends (left end and right end) in the longitudinal direction of the base 10.

[0027] Each of the heat sinks 13 is made of an aluminum plate and formed into a U-shape. The heat sinks 13 are attached to the upper surface of the base 10 in a line in the front-rear and left-right directions. That is, heat generated by the LED unit 2 is conducted from the base 10 to the heat sinks 13, and is dissipated from the heat sinks 13 to the atmosphere.

[0028] (2-3) Panel The panel 4 is formed in a rectangular tray shape from a translucent synthetic resin material such as polycarbonate resin (see FIG. 2). The panel 4 is screwed to the bottom surface of the base 10 so as to cover the LED unit 2 from below (see FIG. 6). The panel 4 is configured to protect the LED unit 2 while transmitting the illumination light emitted from the LED unit 2.

[0029] (2-4) Power supply unit The power supply unit 5 includes a power supply circuit, a unit cover 50, a terminal block 53, a terminal cover 51, a unit mounting block 52, and the like (see FIGS. 1 to 3).

[0030] The power supply circuit (not shown) is a printed circuit having many circuit components mounted on a printed circuit board, and is configured to convert AC power supplied from a power system (commercial AC power supply) into DC power. The DC power output from the power supply circuit is supplied to the LED unit 2 via an electric cable 54 (see FIG. 3) to light up the LED unit 2.

[0031] The unit cover 50 is made of a metal plate such as a galvanized steel plate and has a rectangular box shape with an open bottom. A power supply circuit is fixed to the inner bottom surface of the unit cover 50.

[0032] The terminal block 53 is attached to the outer surface on the left side of the unit cover 50 (see FIG. 3). The terminal block 53 is electrically connected to the power line of the power system so that the power line can be inserted and removed. The terminal block 53 is also electrically connected to the input terminal of the power supply circuit by an electric wire. In other words, the terminal block 53 serves to electrically connect the power line and the input terminal of the power supply circuit.

[0033] The terminal cover 51 is detachably attached to the left side surface of the unit cover 50 so as to cover the terminal block 53. An inverted U-shaped cutout 510 is provided on the front surface of the terminal cover 51 for passing a power line connected to the terminal block 53 (see FIGS. 1 and 3).

[0034] The unit mounting base 52 is formed into a rectangular flat plate made of a metal plate (see FIG. 1). The unit mounting base 52 has four sides bent downward to improve its strength. The unit cover 50 is fixed to the upper surface of the unit mounting base 52 with screws. In other words, the lower surface of the unit cover 50 is covered by the unit mounting base 52.

[0035] The upper ends of the pair of second support plates 12 are screwed to the center of the short side direction (front-rear direction) at both ends (left end and right end) of the unit mounting base 52 in the longitudinal direction. Also, the center parts of the long side direction (left-right direction) at both ends (front end and rear end) of the unit mounting base 52 in the longitudinal direction are screwed to the pair of first support plates 11, respectively. That is, the unit mounting base 52 is connected to the main body 1 by being screwed to the pair of first support plates 11 and the pair of second support plates 12. A gap is provided between the lower surface of the unit mounting base 52 and the upper ends of each of the multiple heat sinks 13 (see FIG. 3).

[0036] (2-5) Arm The arm 3 has a fixed portion 30 and a pair of protruding portions 33. The fixed portion 30 and the pair of protruding portions 33 are integrally formed into a U-shape by a metal plate such as a galvanized steel plate (see Figs. 1 and 2).

[0037] (2-5-1)Protruding part Each of the pair of protrusions 33 is coupled to the pair of first support plates 11 by a bolt 330 and a nut 331 (see FIGS. 1 and 4). Here, each of the pair of protrusions 33 is rotatable relative to the pair of first support plates 11 with the bolt 330 as a rotation axis. However, an arc-shaped long hole 332 penetrates the lower end of each of the pair of protrusions 33, and a bolt 333 inserted into each long hole 332 is fixed to the pair of first support plates 11 by a nut 334 (see FIGS. 1 and 4). In other words, the axis of the bolt 333 abuts against both ends of the long hole 332 in the longitudinal direction, so that the rotatable range of the pair of protrusions 33 relative to the pair of first support plates 11 is restricted.

[0038] (2-5-2) Fixed part The fixed portion 30 is formed in a rectangular flat plate shape. A pair of protrusions 33 are connected to both ends (front and rear ends) of the fixed portion 30 in the longitudinal direction.

[0039] A central portion 300 in the longitudinal direction (front-rear direction) of the fixed portion 30 protrudes in an arc shape along the lateral direction (left-right direction) of the fixed portion 30 (see FIGS. 1 and 5).

[0040] The fixed portion 30 has a first attachment portion 31 and a second attachment portion 32. The fixed portion 30 further has a third attachment portion 34 and a fourth attachment portion 35.

[0041] The first mounting portion 31 includes two oval first mounting holes 310. In other words, the two first mounting holes 310 are part of the components of the first mounting portion 31. Moreover, the second mounting portion 32 includes two second mounting holes 320. In other words, the two second mounting holes 320 are part of the components of the second mounting portion 32.

[0042] One first mounting hole 310 is provided forward of the central portion 300, and the remaining first mounting hole 310 is provided rearward of the central portion 300. The long axis of the front first mounting hole 310 coincides with the longitudinal direction (front-rear direction) of the fixed portion 30. The long axis of the rear first mounting hole 310 coincides with the lateral direction (left-right direction) of the fixed portion 30. In other words, the long axes of the two first mounting holes 310 intersect at an angle of approximately 90 degrees (see FIG. 5).

[0043] The two second mounting holes 320 are provided in the central portion 300. The major axes of the two second mounting holes 320 coincide with the short side direction (left-right direction) of the fixed portion 30. The two second mounting holes 320 are provided so as to be aligned in a row with the center of the central portion 300 in between.

[0044] The third attachment portion 34 is provided in the central portion 300. The third attachment portion 34 includes a round hole 340 provided in the center of the central portion 300 between the two second attachment holes 320, and an elongated hole 341 provided behind the round hole 340. The long axis of the elongated hole 341 coincides with the longitudinal direction (front-rear direction) of the fixed portion 30.

[0045] The fourth mounting portion 35 includes four oblong holes 350. Two of the oblong holes 350 are provided on both the front and rear sides of the second mounting hole 320 on the left side. The remaining two oblong holes 350 are provided on both the front and rear sides of the second mounting hole 320 on the right side. The major axes of these four oblong holes 350 coincide with the diameter of an imaginary circle centered on the circular hole 340 of the third mounting portion 34. Furthermore, the four oblong holes 350 are rotationally symmetrical by 90 degrees with the circular hole 340 of the third mounting portion 34 as the axis of symmetry (see FIG. 5).

[0046] (3) Installation of lighting fixtures according to the embodiment Next, a procedure for installing the lighting fixture A1 in the construction materials of a building will be described.

[0047] An example of a building in which lighting fixture A1 is installed is shown in Fig. 7. The building shown in Fig. 7 is, for example, a warehouse. In this building, beams 8 are constructed of H-shaped steel. Beams 8 include a plurality of large beams 80 and a plurality of small beams 81. The building has a so-called angled rigid frame structure. Therefore, the plurality of large beams 80 are climbing beams (inclined beams) that are inclined obliquely upward from columns 82 at the wall side toward a ridge connecting beam 83 in the center of the building.

[0048] (3-1) When mounting on a horizontal beam (part 1) First, the installation procedure for attaching the lighting fixture A1 to a horizontal beam 8 (ridge tie beam 83) will be described. A worker performing the installation work (hereinafter, abbreviated as the worker) first attaches the mounting member 7 to the beam 8. The mounting member 7 is attached to the beam 8 so that the longitudinal direction of the hanger 70 intersects (is perpendicular to) the longitudinal direction of the beam 8 (see FIG. 8).

[0049] The worker uses the first mounting portion 31 to fix the fixing portion 30 of the arm 3 to the mounting member 7. That is, the worker inserts one bolt 311 into each of two bolt insertion holes (not shown) provided in the bottom surface of the hanger 70, and inserts the two bolts 311 one by one into the two first mounting holes 310 of the first mounting portion 31. Then, the worker fastens nuts 312 onto each of the two bolts 311 inserted into the two first mounting holes 310, thereby fixing the fixing portion 30 to the hanger 70 of the mounting member 7 (see FIG. 8).

[0050] In this case, the rotation axis of the arm 3 (bolt 330) is parallel to the longitudinal direction of the hanger 70 of the mounting member 7. In other words, the rotation axis of the arm 3 intersects (is perpendicular to) the longitudinal direction of the beam 8. As a result, the main body 1 of the lighting device A1 can rotate (swivel) along the longitudinal direction of the beam 8.

[0051] (3-2) When mounting on a horizontal beam (part 2) Next, a procedure for attaching the lighting fixture A1 to the mounting member 7 by using the second mounting portion 32 will be described.

[0052] The worker inserts one bolt 311 into each of two bolt insertion holes (not shown) provided on the bottom surface near the center of the hanger 70, and then inserts the two bolts 311 one by one into the two second mounting holes 320 of the second mounting part 32. The worker then fastens the fixing part 30 to the hanger 70 of the mounting member 7 by tightening the nuts 312 onto each of the two bolts 311 inserted into the two second mounting holes 320 (see FIG. 9).

[0053] In this case, the rotation axis (bolt 330) of arm 3 intersects (is perpendicular to) the longitudinal direction of hanger 70 of mounting member 7. In other words, the rotation axis of arm 3 is parallel to the longitudinal direction of beam 8. As a result, main body 1 of lighting fixture A1 can rotate (swivel) along a direction intersecting (orthogonal to) the longitudinal direction of beam 8.

[0054] (3-3) When mounting on an inclined beam (part 1) Next, a procedure for mounting the lighting fixture A1 on an inclined beam 8 (large beam 80) will be described.

[0055] The worker uses the first attachment portion 31 to fix the fixing portion 30 to the hanger 70 of the attachment member 7, in the same manner as in the procedure described in (3-1) (see FIG. 10).

[0056] In this case, the main body 1 of the lighting fixture A1 can rotate (swivel) along the longitudinal direction of the beam 8. Therefore, the lighting fixture A1 can be installed with the main body 1 horizontal in a state where it is attached to the beam 8 (large beam 80).

[0057] (3-4) When mounting on an inclined beam (part 2) Next, a procedure for mounting the lighting fixture A1 on the beam 8 (small beam 81) rotated about its longitudinal axis will be described.

[0058] The worker uses the second attachment portion 32 to fix the fixing portion 30 to the hanger 70 of the attachment member 7, in the same manner as in the procedure described in (3-2) (see FIG. 11).

[0059] In this case, the main body 1 of the lighting device A1 can rotate (swivel) in a direction intersecting (perpendicular to) the longitudinal direction of the beam 8. Therefore, the lighting device A1 can be installed with the main body 1 horizontal when attached to the beam 8.

[0060] (3-5) Installation using the third mounting part Next, an installation procedure using the third attachment portion 34 of the fixed portion 30 will be described.

[0061] For example, when directly attaching the fixing part 30 to the flange of the beam 8, the worker inserts a bolt from a hole provided in the flange into a round hole 340 in the third mounting part 34 and tightens a nut onto the bolt to fix the fixing part 30 to the flange. Furthermore, the worker inserts a bolt that has been inserted into another hole provided in the flange into an elongated hole 341 in the third mounting part 34 and tightens the nut to prevent the arm 3 from rotating.

[0062] (3-6) Installation using the fourth mounting part Finally, an installation procedure using the fourth attachment portion 35 of the fixed portion 30 will be described.

[0063] The fourth mounting portion 35 corresponds to a round metal exposed box (see Japanese Industrial Standard JIS C8340). The round exposed box is connected to a conduit that houses electric wires and is attached to the beam 8. Four screw holes are provided on the bottom surface of the round exposed box.

[0064] The worker inserts a bolt into each of the four elongated holes 350 of the fourth mounting portion 35 and screws each bolt into the four screw holes of the round exposed box one by one, thereby fixing the fixing portion 30 to the round exposed box. The worker then inserts the electric wire drawn out from the round exposed box into the central hole of the fixing portion 30 (the round hole 340 of the third mounting portion 34) and electrically connects it to the terminal block 53 of the lighting fixture A1.

[0065] (4) Variations Several modified examples of the lighting fixture A1 according to the embodiment will be described with reference to the drawings. However, each of the modified examples described below is characterized by the structure of the first mounting portion 31 and the second mounting portion 32 provided on the fixing portion 30 of the arm 3, and the other structures are common to the structure of the lighting fixture A1 according to the embodiment. Therefore, the same reference numerals are used for the components common to the lighting fixture A1 according to the embodiment, and illustrations and descriptions are omitted as appropriate.

[0066] (4-1) Variation 1 In lighting device A1 of modification 1, the long axis of one of two second mounting holes 320 included in second mounting portion 32 intersects (is perpendicular to) the long axis of the other second mounting hole 320. In other words, the long axis of one second mounting hole 320 is parallel to the longitudinal direction of fixed portion 30, and the long axis of the other second mounting hole 320 intersects (is perpendicular to) the longitudinal direction of fixed portion 30 (see FIG. 12A).

[0067] The lighting fixture A1 of the first modification has two second mounting holes 320 whose major axes intersect (are perpendicular to each other), and thus has the advantage that it is easy to adjust the inclination with respect to the construction material (beam 8).

[0068] (4-2) Variation 2 In lighting device A1 of modification 2, first attachment portion 31 is provided at center portion 300 of fixing portion 30 (see FIG. 12B).

[0069] Thus, lighting fixture A1 of modification 2 can also accommodate a mounting member 7 having a hanger 70 that is shorter than the embodiment in which first mounting portion 31 is provided outside central portion 300 of fixed portion 30.

[0070] (4-3) Variation 3 Illumination device A1 of modification 3 has central portion 300 with a trapezoidal edge (see FIG. 12C).

[0071] Thus, lighting fixture A1 of modification 3 has the advantage that the deviation in angle between the construction material (beam 8) and arm 3 is easier to visually recognize, compared to the embodiment in which the edge of central portion 300 is formed in an arc shape.

[0072] (4-4) Variation 4 In the lighting device A1 of the fourth modification, the fixing portion 30 is formed in a rectangular shape (see FIG. 12D).

[0073] Thus, in lighting device A1 of modification 4, the mechanical strength of central portion 300 can be improved compared to the embodiment in which the width of both front and rear portions of central portion 300 is narrower than that of central portion 300.

[0074] In the above-mentioned modifications 1 to 4, the third attachment portion 34 and the fourth attachment portion 35 may be provided on the central portion 300.

[0075] (4-5) Other Modifications The first mounting hole 310 of the first mounting portion 31 and the second mounting hole 320 of the second mounting portion 32 may each be any of a round hole, an arm hole, and an arc-shaped long hole. When the first mounting hole 310 and the second mounting hole 320 are arm holes, the fixing portion 30 can be temporarily held by a bolt with a nut attached, thereby improving the workability of the installation work.

[0076] Furthermore, the fixing portion 30 may be configured by joining a plate material having the second mounting portion 32 (two second mounting holes 320) to a plate material having the first mounting portion 31.

[0077] (5) Advantages of the lighting fixture according to the embodiment As described above, in lighting fixture A1, fixing portion 30 of arm 3 has first mounting portion 31 to which mounting member 7 for mounting to beam 8 is attached in a first orientation, and second mounting portion 32 to which mounting member 7 is attached in a second orientation intersecting the first orientation. The "first orientation" is an orientation in which the longitudinal direction of fixing portion 30 and the longitudinal direction of hanger 70 of mounting member 7 coincide (see FIG. 8). The "second orientation" is an orientation in which the longitudinal direction of fixing portion 30 and the longitudinal direction of hanger 70 of mounting member 7 intersect (are perpendicular) (see FIG. 9).

[0078] For example, when the arm 3 does not have the second mounting portion 32, in order to mount it in the "second orientation", it is necessary to insert the bolts inserted into the bolt insertion holes of the hangers 70 of the two mounting members 7 one by one into the two first mounting holes 310 of the first mounting portion 31 and tighten the nuts. In other words, for an arm 3 that does not have the second mounting portion 32, two mounting members 7 are required depending on the orientation of mounting to the beam 8.

[0079] In contrast, lighting fixture A1 has a second mounting portion 32 provided on arm 3 in addition to first mounting portion 31, so that lighting fixture A1 can be attached using a single mounting member 7 in either the "first orientation" or the "second orientation." As a result, lighting fixture A1 can reduce the number of mounting members 7 used compared to conventional examples.

[0080] In addition, in the lighting device A1, the two first mounting holes 310 are arranged on either side of the longitudinal center of the fixed portion 30, and the two second mounting holes 320 are arranged on either side of the longitudinal center of the fixed portion 30 and closer to the center than the two first mounting holes 310.

[0081] Thus, in the lighting device A1, the fixing portion 30 of the arm 3 can be fixed in two orientations, the first orientation and the second orientation, to the mounting member 7 having the long hanger 70. As a result, the lighting device A1 can reduce the size of the mounting member 7.

[0082] Furthermore, in the lighting fixture A1, the two first mounting holes 310 are provided in the fixing part 30 so that their longitudinal directions intersect with each other. Therefore, the position of the lighting fixture A1 can be adjusted in both the longitudinal and lateral directions of the hanger 70 of the mounting member 7, and the workability of the installation work can be improved.

[0083] Furthermore, in the lighting device A1, if the two second mounting holes 320 are provided in the fixing portion 30 so that their longitudinal directions are parallel to each other, the position can be adjusted relative to the longitudinal direction of the mounting member 7, thereby improving the workability of the installation work.

[0084] On the other hand, in the lighting fixture A1, if the two second mounting holes 320 are provided in the fixing portion 30 so that their longitudinal directions intersect with each other, the position can be adjusted in both the longitudinal and lateral directions of the hanger 70 of the mounting member 7, thereby improving the workability of the installation work.

[0085] Here, in the lighting device A1, the width dimension of the fixing portion 30 at the center portion 300 where the two second mounting holes 320 are arranged is larger than the width dimension of the portion where the two first mounting holes 310 are arranged. Thus, by increasing the width dimension of the center portion 300 where the second mounting portion 32 is provided, the lighting device A1 can improve the mounting strength while preventing the fixing portion 30 from becoming large.

[0086] Furthermore, since the edge of central portion 300 of fixing portion 30 of lighting device A1 is formed in an arc shape, fixing portion 30 can be easily held in the hand.

[0087] (6) Summary The lighting fixture (A1) according to the first aspect of the present disclosure includes a light source (LED unit 2), a main body (1) that holds the light source, and a support member (arm 3) that supports the main body (1). The support member has a fixing portion (30) formed in a long plate shape, and a pair of protruding portions (33) that protrude in the thickness direction of the fixing portion (30) from both ends in the longitudinal direction of the fixing portion (30). Each tip of the pair of protruding portions (33) is connected to the main body (1). The fixing portion (30) has a first mounting portion (31) to which a mounting member (7) for mounting to a building construction material (beam 8) is attached in a first direction, and a second mounting portion (32) to which the mounting member (7) is attached in a second direction that intersects with the first direction.

[0088] The lighting fixture (A1) according to the first aspect can be attached to a construction material with one mounting member (7) regardless of whether it is attached in the first orientation or the second orientation. As a result, the lighting fixture (A1) according to the first aspect can reduce the number of mounting members (7) used compared to the conventional example.

[0089] A lighting fixture (A1) according to a second aspect of the present disclosure can be realized by combining with the first aspect. In the lighting fixture (A1) according to the second aspect, the first mounting portion (31) preferably includes a plurality of first mounting holes (310) penetrating the fixed portion (30) in the thickness direction. The plurality of first mounting holes (310) are preferably arranged on either side of the center of the fixed portion (30) in the longitudinal direction. The second mounting portion (32) preferably includes a plurality of second mounting holes (320) penetrating the fixed portion (30) in the thickness direction of the fixed portion (30). The plurality of second mounting holes (320) are preferably arranged on either side of the center of the fixed portion (30) in the longitudinal direction and closer to the center than the plurality of first mounting holes (310).

[0090] The lighting fixture (A1) according to the second aspect allows the mounting member (7) to be made smaller.

[0091] A lighting fixture (A1) according to a third aspect of the present disclosure can be realized by combining it with the second aspect. In the lighting fixture (A1) according to the third aspect, the first mounting portion (31) preferably includes two first mounting holes (310) each having an elongated hole. The two first mounting holes (310) are preferably provided in the fixing portion (30) such that their longitudinal directions cross each other.

[0092] The lighting fixture (A1) according to the third aspect allows adjustment of the position in both the longitudinal and lateral directions of the mounting member (7), thereby improving the workability of the installation work.

[0093] A lighting fixture (A1) according to a fourth aspect of the present disclosure can be realized by combining it with the third aspect. In the lighting fixture (A1) according to the fourth aspect, the second mounting portion (32) preferably includes two second mounting holes (320) each formed as an elongated hole. The two second mounting holes (320) are preferably provided in the fixing portion (30) such that their longitudinal directions are parallel to each other.

[0094] The lighting fixture (A1) according to the fourth aspect can be adjusted in position in the longitudinal direction of the mounting member (7), thereby improving the workability of installation work.

[0095] A lighting fixture (A1) according to a fifth aspect of the present disclosure can be realized by combining it with the third aspect. In the lighting fixture (A1) according to the fifth aspect, the second mounting portion (32) preferably includes two second mounting holes (320) each formed as an elongated hole. The two second mounting holes (320) are preferably provided in the fixing portion (30) such that their longitudinal directions cross each other.

[0096] The lighting fixture (A1) according to the fifth aspect allows adjustment of the position in both the longitudinal and lateral directions of the mounting member (7), thereby improving the workability of the installation work.

[0097] A lighting fixture (A1) according to a sixth aspect of the present disclosure can be realized by combining with any one of the second to fifth aspects. In the lighting fixture (A1) according to the sixth aspect, it is preferable that the width dimension of the fixing part (30) at a portion where the plurality of second mounting holes (320) are arranged (central part 300) is larger than the width dimension of the portion where the plurality of first mounting holes (310) are arranged.

[0098] The lighting fixture (A1) according to the sixth aspect can improve the mounting strength while preventing the fixing part (30) from becoming large.

[0099] A lighting fixture (A1) according to a seventh aspect of the present disclosure can be realized in combination with the sixth aspect. In the lighting fixture (A1) according to the seventh aspect, it is preferable that the fixing part (30) has an edge formed in an arc shape at a portion where the plurality of second mounting holes (320) are arranged.

[0100] The lighting fixture (A1) according to the seventh aspect can be made easier to hold when holding the fixing part (30) in the hand.

[0101] A lighting device (A1) according to an eighth aspect of the present disclosure can be realized by combining with any one of the first to seventh aspects. In the lighting device (A1) according to the eighth aspect, each of the pair of protrusions (33) is preferably rotatably coupled to the main body (1).

[0102] In the lighting fixture (A1) according to the eighth aspect, the attitude (angle) of the main body (1) can be adjusted by rotating the main body (1) relative to the support member. [Explanation of symbols]

[0103] A1 Lighting equipment 1 Main unit 2 LED unit (light source) 3 Arm (support member) 5 Power supply unit 7 Mounting material 8 Beams (construction materials) 30 Fixed part 31 First mounting part 32 Second mounting part 33 Protrusion 300 Central portion (where multiple second mounting holes are arranged) 310 First mounting hole 320 Second mounting hole

Claims

1. A light source; A body for holding the light source; A support member for supporting the main body; Equipped with The support member is A fixing portion formed in a long plate shape; A pair of protruding portions protruding from both ends of the fixing portion in a longitudinal direction; having a tip end of each of the pair of projections is coupled to the main body; The fixing portion is a first mounting portion to which a mounting member for mounting to a building construction material is attached in a first orientation; a second mounting portion to which the mounting member is attached in a second orientation intersecting the first orientation; have Lighting fixtures.

2. the first mounting portion includes a plurality of first mounting holes penetrating the fixing portion in a thickness direction of the fixing portion, The first mounting holes are arranged on either side of a center of the fixed portion in a longitudinal direction, the second mounting portion includes a plurality of second mounting holes penetrating the fixing portion in the thickness direction, The second mounting holes are disposed on either side of the center and closer to the center than the first mounting holes.

2. The lighting device of claim 1.

3. the first mounting portion includes two first mounting holes each formed as an elongated hole, The two first mounting holes are provided in the fixing portion so that their longitudinal directions intersect with each other.

3. A lighting device according to claim 2.

4. the second mounting portion includes two second mounting holes each formed as an elongated hole, The two second mounting holes are provided in the fixing portion so that their longitudinal directions are parallel to each other.

4. A lighting device according to claim 3.

5. the second mounting portion includes two second mounting holes each formed as an elongated hole, The two second mounting holes are provided in the fixing portion so that their longitudinal directions intersect with each other.

4. A lighting device according to claim 3.

6. The fixing portion has a width dimension of a portion where the plurality of second mounting holes are arranged that is larger than a width dimension of a portion where the plurality of first mounting holes are arranged. A lighting device according to any one of claims 2 to 5.

7. The fixing portion has an arc-shaped edge at the portion where the second mounting holes are arranged.

7. A lighting device according to claim 6.

8. Each of the pair of protrusions is rotatably coupled to the main body. A luminaire according to any one of claims 1 to 7.

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