JP6998526B2 - lighting equipment - Google Patents

Description

The present invention relates to a luminaire, and more particularly to a luminaire having a light source unit and a fixture body to which the light source unit is attached.

Patent Document 1 discloses a lighting fixture including a light source unit, a fixture main body, a frame, a translucent panel, and a lighting device. The instrument body is formed in a box shape with an open lower surface, and is installed in a state of being embedded in an opening provided in the ceiling material. The light source unit is housed inside the instrument body. The frame is provided with a through hole so as to be connected to the opening of the instrument body, and is attached to the instrument body in a state where the upper surface is in contact with the peripheral edge of the opening in the ceiling material. The panel is held in the frame so as to close the through hole. The frame is attached to the instrument body by using fixed springs attached to each of the pair of frame portions facing each other with the through hole interposed therebetween.

Japanese Unexamined Patent Publication No. 2014-232713

When the lighting fixture of Patent Document 1 is installed on the ceiling material, first, the fixture body is fixed to the hanging bolt of the ceiling material. Next, the frame is attached to the fixture body together with the light source unit and the panel. Here, when the instrument body is fixed to the suspension bolt, the suspension bolt may protrude into the instrument body. Therefore, the tip of such a hanging bolt may hinder the work of attaching the light source unit to the fixture body.

An object of the present invention is to provide a lighting fixture that can easily attach a light source unit to a fixture main body.

One aspect of the lighting fixture according to the present invention includes a light source unit and a fixture main body to which the light source unit is attached. The light source unit has a mounting plate to which a light source is mounted and at least a pair of mounting tools. The instrument body has a bottom wall and at least a pair of joints located at both ends in a direction orthogonal to the thickness direction of the bottom wall. The light source unit is attached to the fixture body by coupling the at least pair of fixtures to the at least pair of coupling portions, respectively. The bottom wall has a plurality of bolt insertion holes through which hanging bolts are inserted. The plurality of bolt insertion holes are arranged along a first straight line in a plane orthogonal to the thickness direction of the bottom wall. The first straight line is orthogonal to the second straight line connecting the at least a pair of joints in the plane. A plurality of insertion holes to which a power supply line for power supply is supplied are provided at positions different from those on the first straight line. The plurality of insertion holes are provided at positions different from those on the first straight line, and at least one of the plurality of insertion holes is provided on the second straight line.
One aspect of the lighting fixture according to the present invention includes a light source unit and a fixture main body to which the light source unit is attached. The light source unit has a mounting plate to which a light source is mounted and at least a pair of mounting tools. The instrument body has a bottom wall and at least a pair of joints located at both ends in a direction orthogonal to the thickness direction of the bottom wall. The light source unit is attached to the fixture body by coupling the at least pair of fixtures to the at least pair of coupling portions, respectively. The bottom wall has a plurality of bolt insertion holes through which hanging bolts are inserted. The plurality of bolt insertion holes are arranged along a first straight line in a plane orthogonal to the thickness direction of the bottom wall. The first straight line is orthogonal to the second straight line connecting the at least a pair of joints in the plane. A plurality of insertion holes to which a power supply line for power supply is supplied are provided at positions different from those on the first straight line. The light source unit further includes a power supply unit for lighting the light source. The instrument body further comprises a functional unit that is electrically connected to the power supply unit. The power supply unit and the functional unit are located on the opposite sides of the first straight line in the plane. The light source unit further comprises an electric wire whose first end is electrically connected to the power supply unit and whose second end is electrically connected to the functional unit. The light source unit has a holder for holding the electric wire. The holder is located on the first straight line in the plane.

One aspect of the lighting fixture according to the present invention has an effect that the work of attaching the light source unit to the fixture main body can be easily performed.

FIG. 1 is an exploded perspective view of a lighting fixture according to an embodiment of the present invention as viewed from above. FIG. 2 is a perspective view of the same lighting fixture. FIG. 3 is an exploded perspective view of the lighting fixture as seen from below. FIG. 4 is an exploded perspective view of the fixture body in the same lighting fixture. FIG. 5 is an exploded perspective view of the light source unit in the same lighting fixture as viewed from below. FIG. 6 is an exploded perspective view of the same light source unit as viewed from above. FIG. 7 is a perspective view in which the cover of the light source unit of the above is omitted. FIG. 8 is a top view of the same lighting fixture in which the reflective member is omitted. FIG. 9 is a perspective view of the light source unit of the above modified example as viewed from below.

1. 1. Embodiment 1.1 Configuration The lighting fixture according to the embodiment of the present invention will be described in detail with reference to the drawings. The lighting fixture 1 of the present embodiment is an embedded lighting fixture that is embedded and arranged in the ceiling.

As shown in FIGS. 1 to 3, the lighting fixture 1 of the present embodiment includes a light source unit 2 and a fixture main body 10 to which the light source unit 2 is attached. However, in the following description, unless otherwise specified, the vertical, front-rear, and left-right directions of the luminaire 1 are defined in FIGS. 1 and 3.

As shown in FIGS. 1, 3 and 4, the instrument main body 10 has a rectangular parallelepiped-shaped (box-shaped) first main body (accommodation portion 11) having an open lower surface and a quadrangular pyramid-shaped (box-shaped) having an open upper surface and a lower surface. It has a second main body (reflecting member 12) having a rectangular parallelepiped shape. The accommodating portion 11 has a square bottom wall 110 and four rectangular side walls 111 protruding downward from the four sides of the bottom wall 110. Hereinafter, in order to distinguish the four side walls 111 as necessary, the left side, right side, front side, and rear side walls are represented by reference numerals 111A, 111B, 111C, and 111D, respectively. The bottom wall 110 and the four side walls 111 of the accommodating portion 11 are preferably integrally formed of a metal plate such as a steel plate.

The bottom wall 110 has a plurality of insertion holes 1100 through which a power supply line for power supply is inserted. The power line inserted through the insertion hole 1100 is electrically connected to the terminal block 13 attached to the lower surface of the bottom wall 110. The terminal block 13 is a functional unit electrically connected to the power supply unit 6 of the light source unit 2 described later. As shown in FIG. 3, the terminal block 13 is located closer to the side wall 111D on the rear side than the center of the bottom wall 110 in the front-rear direction. Further, the terminal block 13 is located closer to the left side wall 111A than the center of the bottom wall 110 in the left-right direction.

Further, the bottom wall 110 has a plurality of bolt insertion holes 1101 into which hanging bolts 90 embedded in the building frame (ceiling frame 9) are inserted (see FIG. 3). These plurality of bolt insertion holes 1101 are provided in the bottom wall 110 so as to be arranged in a row in the left-right direction. More specifically, as shown in FIG. 8, the plurality of bolt insertion holes 1101 includes a plurality of pairs of bolt insertion holes 1101A, 1101B, 1101C. Further, the plurality of bolt insertion holes 1101 include a single bolt insertion hole 1101D. These plurality of bolt insertion holes 1101A, 1101B, 1101C, 1101D are arranged along a straight line (first straight line L10) in a plane orthogonal to the thickness direction (vertical direction) of the bottom wall 110. Hereinafter, in order to avoid repeating redundant expressions, a plane orthogonal to the thickness direction of the bottom wall 110 is referred to as a reference plane, if necessary. The reference plane is not a surface of any component of the luminaire 1, but a virtual surface for explaining the positional relationship between the components. The first straight line L10 is a direction (left-right direction) orthogonal to the thickness direction of the bottom wall 110. Further, the first straight line L10 passes through the position of the center of gravity of the instrument main body 10 (in the present embodiment, the center of the bottom wall 110) in the reference plane. As a result, the instrument body 10 can be attached to the suspension bolt 90 in a stable state. Each of the plurality of pairs of bolt insertion holes 1101A, 1101B, and 1101C is point-symmetrical with respect to the position of the center of gravity of the instrument body 10 in the reference plane. Therefore, the instrument main body 10 can be attached in a stable state by the suspension bolt 90. Further, in the plurality of pairs of bolt insertion holes 1101A, 1101B, 1101C, the intervals between the paired bolt insertion holes 1101 are different from each other. Here, the pair of bolt insertion holes 1101A has the smallest spacing, followed by the pair of bolt insertion holes 1101B and the pair of bolt insertion holes 1101C in that order. Further, the single bolt insertion hole 1101D is located at the position of the center of gravity of the instrument main body 10 in the reference plane.

Each of the left side wall 111A and the right side wall 111B has a pair of locking portions 112 and a pair of conducting portions 113 (see FIG. 4). The pair of locking portions 112 project diagonally upward from the inner surface of each side wall 111A (111B). It is preferable that these locking portions 112 are formed by cutting up a part of the side wall 111A (111B). Further, the pair of conductive portions 113 are formed by cutting and raising a part of the side wall 111A (111B) (see FIG. 4). Further, each of the left side wall 111A and the right side wall 111B has a pair of restricting portions 115. The pair of restricting portions 115 have a substantially rectangular flat plate shape, and are parallel to the front and rear side walls 111C and 111D from the inner side surfaces at both ends in the longitudinal direction (front-back direction) of each side wall 111A (111B). It stands out. It is preferable that these regulating portions 115 are formed by cutting up from each side wall 111A (111B).

Each of the front side wall 111C and the rear side wall 111D has a pair of locking portions 112 and a hooking portion 114 (see FIG. 4). Similar to the locking portions 112 of the left and right side walls 111A and 111B, the pair of locking portions 112 is formed from the inner surface of each side wall 111C (111D) by cutting up a part of the side wall 111C (111D). It is formed so as to project diagonally upward. The hook portions 114A and 114B are provided at the center of the side walls 111C and 111D in the longitudinal direction. As described above, the instrument main body 10 has a pair of hooking portions 114A and 114B located at both ends in a direction (front-back direction) orthogonal to the thickness direction (vertical direction) of the bottom wall 110. As shown in FIG. 8, a straight line (second straight line L20) connecting the pair of hooking portions 114A and 114B passes through the center (center of gravity position) of the instrument main body 10 in a plane orthogonal to the thickness direction of the bottom wall 110. , Orthogonal to the first straight line L10. However, the first straight line L10 and the second straight line L20 do not have to be orthogonal in a strict sense, and may intersect within a range that can be determined to be orthogonal in the technical field of lighting fixtures. The hooking portion 114A constitutes a coupling portion (first coupling portion) to be coupled to the fixture 8 (first fixture 8A) described later in order to mount the light source unit 2 to the fixture main body 10. The hooking portion 114B constitutes a coupling portion (second coupling portion) to be coupled to the fixture 8 (second fixture 8B) described later in order to mount the light source unit 2 to the fixture main body 10. The hook portion 114A (114B) has a hole 1141 that penetrates the side wall 111C (111D) in the thickness direction thereof. The hole 1141 is a hole into which the mounting spring 80 of the mounting tool 8 described later is inserted. However, the hole 1141 of the hooking portion 114 (114A) of the front side wall 111C is formed in an inverted U shape, and the hole 1141 of the hooking portion 114 (114B) of the rear side wall 111D is formed in an H shape. (See Fig. 4).

The reflective member 12 includes four reflectors 120, four side plates 121 protruding upward from the upper end of each reflector 120, and a frame 122 projecting from the lower end of each reflector 120 in the front-rear direction and the left-right direction. Has (see FIG. 4). Hereinafter, in order to distinguish the four side plates 121 as necessary, the left side, right side, front side, and rear side plates are represented by reference numerals 121A, 121B, 121C, 121D, respectively. Each reflector 120 is formed in a trapezoidal shape. Each side plate 121 is formed in a substantially trapezoidal shape. The four reflectors 120 form a cylindrical enclosure in which the ends (upper end and lower end) on both sides along the axial direction (vertical direction) are open. Each side plate 121 is coupled to the corresponding one side wall 111 of the four side walls 111 of the accommodating portion 11, respectively. That is, the four side plates 121A, 121B, 121C, 121D are coupled to the four side walls 111A, 111B, 111C, 111D, respectively. The frame 122 is formed in a square frame shape and is connected to the lower ends of each of the four reflectors 120. The reflecting member 12 is configured to adjust the light distribution of the light emitted by the light source unit 2 by the inner side surfaces (reflecting surfaces) of the four reflecting plates 120.

The four side plates 121 are all formed in the same shape. Each side plate 121 has a pair of rectangular locking holes 123, a rectangular through hole 124, and a pair of trapezoidal holes 125 (see FIG. 4). The through hole 124 is provided substantially in the center in the longitudinal direction of the side plate 121. The pair of holes 125 are provided on both sides of the through hole 124 along the longitudinal direction of the side plate 121. The pair of locking holes 123 are provided on both sides of the pair of holes 125 along the longitudinal direction of the side plate 121 and the longitudinal direction thereof is aligned with the longitudinal direction of the side plate 121. In the locking holes 123 provided in pairs on each of the four side plates 121, the corresponding locking portion 112 of the locking portions 112 provided in pairs on the four side walls 111 of the accommodating portion 11 is provided. Inserted one by one. The locking portion 112 inserted into the locking hole 123 is locked to the side plate 121 by hitting the upper edge of the locking hole 123 in each side plate 121. That is, the locking portion 112 is configured to prevent the side plate 121 from being displaced in a direction away from the bottom wall 110 (downward).

As described above, a total of eight locking portions 112 are locked to the side plates 121, whereby the accommodating portion 11 and the reflective member 12 are coupled to form the instrument main body 10 (see FIG. 3). Further, the pair of conductive portions 113 provided on each side wall 111 are bent so as to be inserted into the corresponding holes 125 (see FIG. 3). The bent conduction portion 113 contacts the edge of the hole 125 in the side plate 121. That is, the accommodating portion 11 is electrically conductive with the reflective member 12 via the conductive portion 113. Further, the hooking portions 114A and 114B provided on the side walls 111C and 111D have through holes 124 provided in the side plates 121C and 121D along the thickness direction (front-back direction) of the side walls 111C and 111D and the side plates 121C and 121D. (See Fig. 3).

Here, when the two parts constituting the instrument main body are connected by screwing, the workability of the instrument main body assembly work may be deteriorated by the screw tightening work. On the other hand, in the fixture body 10 of the lighting fixture 1, the locking portion 112 provided on the side wall 111 is inserted into the locking hole 123 provided on the side plate 121, so that the accommodating portion 11 and the reflective member 12 are inserted. Are configured to be combined. Therefore, the accommodating portion 11 and the reflective member 12 can be coupled without using a tool such as a screwdriver, and the deterioration of the workability of the assembly work of the instrument main body 10 can be suppressed. Further, the locking portion 112 is configured to prevent the side plate 121 from being displaced in a direction away from the bottom wall 110 (downward). Therefore, when strong shaking occurs due to an earthquake, the locking portion 112 is less likely to be disengaged, and the possibility that the reflective member 12 will fall can be reduced.

As shown in FIGS. 1, 5, and 6, the light source unit 2 includes two LED (Light Emitting Diode) modules 3, a mounting member 4, a cover 5, a power supply unit 6, and a wireless communication unit 7. It is provided with a pair of attachments 8. The two LED modules 3, the cover 5, the power supply unit 6, the wireless communication unit 7, and the two attachments 8 are attached to the attachment member 4. Further, as shown in FIG. 8, the light source unit 2 includes an electric wire 200. The electric wire 200 is used for electrical connection between the terminal block 13 of the instrument main body 10 and the power supply unit 6. As shown in FIG. 8, the electric wire 200 is connected to the power supply unit 6 at the first end 201. Further, the electric wire 200 has a connector 210 at the second end 202 for connection with the terminal block 13. That is, in the electric wire 200, the first end 201 is electrically connected to the power supply unit 6, and the second end 202 is electrically connected to the terminal block 13. The connector 210 of the electric wire 200 is not directly connected to the terminal block 13, but is connected to the connector of another electric wire connected to the terminal block 13.

The mounting member 4 has a square mounting plate 40 and four side plates 41 protruding downward from each of the four sides of the mounting plate 40. The mounting plate 40 has an upper surface 410 and a lower surface 411, which are both sides in the first direction (vertical direction). However, it is preferable that the mounting plate 40 and the four side plates 41 are integrally formed by bending a metal plate such as a zinc steel plate. Each of the four side plates 41 is formed in an elongated rectangular shape.

Further, as shown in FIG. 8, the mounting member 4 includes a (first) holder 43 and a (second) holder 44. The first holder 43 and the second holder 44 are used to hold the electric wire 200.

As shown in FIG. 8, the first holder 43 is located at the center of the second direction (front-back direction) orthogonal to the first direction (vertical direction) of the mounting plate 40. Further, as shown in FIG. 8, the first holder 43 is more than one end (left end) of the mounting plate 40 in the third direction (left-right direction) orthogonal to the first direction and the second direction of the mounting plate 40, respectively. Located near the center. As shown in FIG. 6, the first holder 43 has a projecting piece 431 projecting upward from the upper surface 410 of the mounting plate 40 and the other end (right end) side of the mounting plate 40 from the tip of the projecting piece 431 in the third direction. It has a cover piece 432 that protrudes into. The vertical length of the projecting piece 431 is set so that the electric wire 200 can be arranged between the covering piece 432 and the mounting plate 40. That is, the first holder 43 holds the electric wire 200 between the cover piece 432 and the mounting plate 40.

As shown in FIG. 8, the second holder 44 is located closer to the center than the rear end of the mounting plate 40 in the front-rear direction of the mounting plate 40. Further, the second holder 44 is located closer to the center than the left end of the mounting plate 40 in the left-right direction of the mounting plate 40. As shown in FIG. 6, the second holder 44 includes a protruding piece 441 protruding upward from the upper surface 410 of the mounting plate 40, and a covering piece 442 protruding upward from the tip of the protruding piece 441 to the left end side of the mounting plate 40. Have. The vertical length of the projecting piece 441 is set so that the electric wire 200 can be arranged between the covering piece 442 and the mounting plate 40. That is, the second holder 44 holds the electric wire 200 between the cover piece 442 and the mounting plate 40.

The first holder 43 and the second holder 44 are integrally formed with the mounting plate 40 by cutting out and bending a part of the metal plate forming the mounting plate 40.

Each of the two LED modules 3 is configured by mounting a large number of LEDs 30 on the mounting surface (lower surface) of the rectangular mounting board 31. Each LED 30 is, for example, a white LED for lighting that emits white light. These plurality of LEDs 30 are arranged in a grid pattern on the mounting surface of the mounting board 31, and are electrically connected to each other via a wiring conductor (copper foil) formed on the mounting surface. Further, on the mounting surface of each mounting board 31, a receptacle connector 32 electrically connected to each LED 30 via a wiring conductor is mounted. The receptacle connector 32 is removably connected to a plug connector connected to the output line of the power supply unit 6 as described later. The two LED modules 3 are attached to the lower surface 411 of the mounting plate 40 by screwing so as to be arranged at intervals in the left-right direction (see FIG. 7).

The power supply unit 6 is configured to light each of the two LED modules 3. That is, the power supply unit 6 is configured to light the LED 30, which is a light source. The power supply unit 6 has a power supply circuit configured by mounting electronic components on a printed wiring board 61, and a case 60 accommodating the power supply circuit (see FIG. 6). The power supply circuit includes an input connector 62, a rectifier, a power factor improving circuit, a step-down DC / DC converter, an output connector 63, and the like. The input connector 62 is electrically connected to the terminal block 13 via the electric wire 200 (see FIG. 8). The power supply circuit converts the AC power input from the input connector 62 into DC power, and then outputs the converted DC power from the output connector 63 via an electric wire (output line). DC power is supplied to each LED 30 of each LED module 3 via a plug connector and a receptacle connector 32 connected to the tip of the output line.

In the printed wiring board 61, a wiring conductor (copper foil) is formed on the component surface of a long rectangular flat plate-shaped insulating substrate. So-called lead components such as an input connector 62, an output connector 63, a smoothing capacitor, and a choke coil are mounted on the surface of the printed wiring board 61. Then, the surface mount component of the electronic components constituting the power supply circuit is mounted on the solder surface of the printed wiring board 61. However, the input connector 62 is mounted on one end (left end) of the printed wiring board 61 in the longitudinal direction, and the output connector 63 is mounted on the other end (right end) of the printed wiring board 61 in the longitudinal direction. As shown in FIG. 6, the case 60 is formed in a long box shape by a metal plate material. The case 60 houses the printed wiring board 61 inside so that the input connector 62 and the output connector 63 are exposed. That is, the input connector 62 and the output connector 63 are arranged at both ends of the case 60 in the longitudinal direction. As shown in FIG. 8, the power supply unit 6 has a mounting plate 40 so that the longitudinal direction of the case 60 coincides with the front end (one end in the second direction of the mounting plate 40) of the upper surface 410 of the mounting plate 40 in the left-right direction. It is screwed to. In particular, the case 60 is arranged so that the input connector 62 faces the left end side of the mounting plate 40 and the output connector 63 faces the right end side of the mounting plate 40.

As shown in FIG. 6, the wireless communication unit 7 includes a housing 70 made of synthetic resin, a signal cable 71, a plug connector 72, and the like. The wireless communication unit 7 is configured to acquire a control command from a wireless signal (for example, a wireless signal using a radio wave in the 920 MHz band as a medium) received by an antenna housed in the housing 70. The wireless signal is transmitted from the transmitter and transmits a control command for turning on / off the lighting fixture 1 and / or dimming. The wireless communication unit 7 is configured to transmit a control command acquired from the wireless signal to the power supply circuit of the power supply unit 6 via the signal cable 71 and the plug connector 72. The plug connector 72 is electrically connected to the receptacle connector provided in the power supply unit 6. The power supply circuit of the power supply unit 6 is configured to turn on / off and dimm the LED module 3 by adjusting the DC power output from the output connector 63 according to the control command transmitted from the wireless communication unit 7. ing.

The wireless communication unit 7 is mounted on the upper surface 410 of the mounting plate 40 (see FIG. 6). The mounting plate 40 is provided with a hole 400 through which a part of the housing 70 of the wireless communication unit 7 (the antenna accommodating portion 700 in which the antenna is accommodated) is inserted (see FIG. 5). The housing 70 of the wireless communication unit 7 is fixed to the upper surface 410 of the mounting plate 40 with the antenna accommodating portion 700 inserted through the hole 400. However, this hole 400 is located between the two LED modules 3 on the lower surface 411 of the mounting plate 40. Therefore, the antenna accommodating portion 700 projects downward from between the two LED modules 3 on the lower surface 411 of the mounting plate 40 (see FIG. 7).

The pair of attachments 8 (first attachment 8A, second attachment 8B) have the same configuration. Each mounting tool 8 has a mounting spring 80 and a mounting bracket 85 for mounting the mounting spring 80 on the mounting plate 40 (see FIG. 6). The mounting spring 80 is composed of a torsion coil spring having a coil portion 81, two arm portions (first arm portion 82 and a second arm portion 83), and a hook piece 84. The mounting bracket 85 has a flat plate-shaped base 850, a bridge-shaped support portion 851 provided on the base 850, and a cylindrical hook portion 852 provided on the base 850. The support portion 851 rotatably supports the coil portion 81 around its axis. The hooking piece 84 of the mounting spring 80 is hooked on the hooking portion 852 (see FIG. 6). As shown in FIG. 8, the mounting brackets 85 of the two mounting tools 8A and 8B are screwed to both ends in the front-rear direction and the center position in the left-right direction on the upper surface 410 of the mounting plate 40. Here, it is preferable that the pair of fixtures 8A and 8B are on a straight line passing through the position of the center of gravity of the light source unit 2. The first arm portion 82 of each mounting spring 80 projects to the outside of the mounting plate 40 (see FIG. 7). The second arm portion 83 of each mounting spring 80 is hooked on the mounting bracket 85 (see FIG. 6).

As shown in FIG. 6, the cover 5 has a square bottom portion 50, a peripheral wall portion 51 rising upward from the peripheral edge of the bottom portion 50, and four mounting portions 52 provided at the upper end of the peripheral wall portion 51. There is. The bottom portion 50, the peripheral wall portion 51, and the four mounting portions 52 are preferably integrally formed of a translucent synthetic resin material such as acrylic resin or polycarbonate resin. Further, it is preferable that at least the bottom portion 50 and the peripheral wall portion 51 are configured to diffuse light by applying a textured surface to the surface thereof. Alternatively, it is preferable that at least the bottom portion 50 and the peripheral wall portion 51 are configured to diffuse light by mixing a diffusing agent in the synthetic resin material. Each mounting portion 52 includes a rectangular projecting piece 520 projecting from the upper end of the peripheral wall portion 51 in parallel with the bottom portion 50, an engaging piece 521 formed in a hook shape and projecting upward from the upper end of the peripheral wall portion 51, and a peripheral wall. It has a protrusion 522 protruding upward from the upper end of the portion 51.

The cover 5 is attached to the attachment member 4 so as to accommodate the peripheral wall portion 51 inside the side plate 41 of the attachment member 4. Here, in the mounting plate 40 of the mounting member 4, one mounted portion 42 is provided at a position corresponding to the four mounting portions 52 of the cover 5, that is, at the center of the four sides of the mounting plate 40 in the longitudinal direction. (See FIGS. 5 and 6). Each mounted portion 42 has a mounting hole 420 that penetrates the mounting plate 40 in the thickness direction, and a caulking piece 421 that projects upward along the side plate 41 from the edge of the mounting hole 420. The engagement piece 521 and the protrusion 522 of each mounting portion 52 are inserted into the corresponding mounting holes 420 from the bottom to the top of the mounting plate 40 (see FIG. 6). Then, each crimping piece 421 is crimped inward, so that the engaging piece 521 engages with the crimping piece 421. That is, the cover 5 is attached to the mounting plate 40 of the mounting member 4 so as to accommodate the peripheral wall portion 51 inside the side plate 41 (see FIG. 6).

In the lighting fixture 1 described above, as shown in FIG. 8, the plurality of bolt insertion holes 1101 (1101A, 1101B, 1101C, 1101D) are first in a plane (reference plane) orthogonal to the thickness direction of the bottom wall 110. They are lined up along the straight line L10. The first straight line L10 is orthogonal to the second straight line L20 connecting the pair of connecting portions 114 and 114 in the reference plane. Here, the pair of coupling portions 114 and 114 are coupled to the pair of fixtures 8 and 8 of the light source unit 2. Therefore, the second straight line L20 connecting the pair of connecting portions 114 and 114 coincides with the straight line connecting the pair of fixtures 8 and 8. Therefore, it can be said that the first straight line L10 is orthogonal to the straight line connecting the pair of fixtures 8 and 8 on the reference plane. Further, the first straight line L10 passes through the center between the pair of hooking portions (joining portions) 114 and 114 in the reference plane.

Further, in the lighting fixture 1, as shown in FIG. 8, the power supply unit 6 and the functional unit (terminal block 13) are located on the opposite sides of the first straight line L10 in the reference plane. Therefore, the possibility of interference between the power supply unit 6 and the functional unit (terminal block 13) and the suspension bolt 90 can be reduced. Then, the power supply unit 6 and the terminal block 13 are electrically connected to each other by using the electric wire 200. The electric wire 200 is held by the first holder 43 on the mounting plate 40. Here, the first holder 43 is located on the first straight line L10 in the reference plane. That is, since the electric wire 200 is fixed to the mounting plate 40 on the first straight line L10, the hanging bolt 90 inserted into the instrument main body 10 from any of the plurality of bolt insertion holes 1101 can come into contact with the electric wire 200. The sex can be reduced. Further, the first holder 43 has a cover piece 432 located between the mounting plate 40 and the bottom wall 110, and holds the electric wire 200 between the cover piece 432 and the mounting plate 40. Therefore, the cover piece 432 can protect the electric wire 200 from the suspension bolt 90. Further, the first holder 43 does not overlap with any of the plurality of bolt insertion holes 1101 in the reference plane. As a result, the electric wire 200 can be kept away from the hanging bolt 90. Therefore, the possibility that the suspension bolt 90 comes into contact with the electric wire 200 can be further reduced.

Further, as shown in FIGS. 5 and 6, the two LED modules 3 (light sources) are mounted on a surface (lower surface 411) opposite to one surface (upper surface 410) of the mounting plate 40. Therefore, a larger light source unit 2 can be adopted as compared with the case where the light source unit 2 is mounted on one surface (upper surface 410) of the mounting plate 40.

1.2 Construction work Next, the construction work on the ceiling of the lighting fixture 1 will be described. The worker who performs the construction work first inserts the power line into the insertion hole 1100 of the bottom wall 110, and then tightens the nut 91 to the suspension bolt 90 inserted into the bolt insertion hole 1101 (bolt insertion hole 1101B in FIG. 3). Attach the instrument body 10 to the hanging bolt (see FIG. 3). Further, the operator arranges the instrument main body 10 on the ceiling by connecting the power line drawn from the insertion hole 1100 to the terminal block 13. Since the appliance main body 10 electrically conducts the accommodating portion 11 and the reflective member 12 by the conductive portion 113, it is possible to save the trouble of performing grounding work on both the accommodating portion 11 and the reflective member 12.

Subsequently, the operator allows the rear mounting tool (second mounting tool) 8B to be inserted into the hole 1141 of the hooking portion 114B provided on the rear side wall 111D through the through hole 124 provided in the rear side plate 121D. The first arm portion 82 of the mounting spring 80 is inserted. At this time, the operator hooks the first arm portion 82 of the mounting spring 80 of the rear mounting tool 8B on the temporary holding piece 1140 of the hooking portion 114B of the rear side wall 111D to mount the light source unit 2 on the fixture main body. It can be temporarily held by 10. The operator performs wiring work between the terminal block 13 and the power supply unit 6 in a state where the light source unit 2 is temporarily held by the instrument main body 10. In particular, the electric wire 200 is relatively close to the second attachment 8B because the second end 202 is located on the side opposite to the first attachment 8A with respect to the power supply unit 6. Therefore, the wiring work is easy to perform.

Then, the operator inserts the first arm portion 82 of the mounting spring 80 of the front mounting tool 8A into the hole 1141 of the hooking portion 114A provided on the front side wall 111C. After that, the operator lifts the light source unit 2 and accommodates it in the accommodating portion 11. When the light source unit 2 is accommodated in the accommodating portion 11, the first arm portion 82 of the attachment spring 80 of the attachments 8A and 8B is hooked on the edges of the hook portions 114A and 114B of the side walls 111C and 111D. As a result, the light source unit 2 is supported by the instrument body 10 by the spring forces of the two mounting springs 80. That is, the light source unit 2 is attached to the instrument main body 10 by coupling the first attachment 8A and the second attachment 8B to the hooking portion (first coupling portion) 114A and the hooking portion (second coupling portion) 114B, respectively. Be done.

Here, in the lighting fixture 1, as shown in FIG. 8, the first straight line L10 in which a plurality of bolt insertion holes 1101 (1101A, 1101B, 1101C, 1101D) are lined up is a pair of hooking portions (joining portions) 114, 114. It is orthogonal to the second straight line L20 connecting the two. As a result, the work of connecting each fixture 8 to the corresponding hook portion 114 can be performed at a place away from the hanging bolt 90 protruding into the instrument main body 10. Therefore, the hanging bolt 90 is unlikely to interfere with the work. As a result, the work of attaching the light source unit 2 to the instrument main body 10 can be easily performed. Further, the first straight line L10 passes through the center between the pair of hooking portions (joining portions) 114 and 114. Therefore, each hooking portion (joining portion) 114 can be sufficiently separated from the hanging bolt 90, and the work of attaching the light source unit 2 to the instrument main body 10 can be performed more easily.

The construction work of the lighting fixture 1 is completed by the above procedure. The position of the light source unit 2 in the accommodating portion 11 is restricted by the upper surface 410 of the mounting plate 40 of the mounting member 4 hitting the lower end of the restricting portion 115 of the accommodating portion 11 (see FIG. 7). Therefore, in the lighting fixture 1, the power supply unit 6 does not hit the mounting plate 40, and the stress applied to the light source unit 2 from the fixture main body 10 can be reduced.

1.3 Summary As described above, in the lighting fixture 1 of the present embodiment, the first straight line L10 in which a plurality of bolt insertion holes 1101 are lined up connects the pair of hooking portions (joining portions) 114 and 114 to each other. It is orthogonal to the straight line L20 of. Therefore, the hanging bolt 90 is unlikely to interfere with the work. As a result, the work of attaching the light source unit 2 to the instrument main body 10 can be easily performed.

2. 2. Modifications The embodiment described above is only one of various embodiments of the present invention. Further, the above-described embodiment can be variously modified according to the design and the like as long as the object of the present invention can be achieved. The following are modifications of the above embodiment.

For example, the two attachments 8 (first attachment 8A and second attachment 8B) included in the light source unit 2 do not necessarily have to have the same structure. For example, as a modification of the light source unit 2, as shown in FIG. 9, the second attachment 8B on one side may have a hook-shaped hook metal fitting 86 instead of the attachment spring 80. The hook metal fitting 86 is formed in a hook shape and projects outward from the end of the mounting member 4 of the light source unit 2. The hook metal fitting 86 can be hooked on the hook portion 114B of the side wall 111D of the fixture main body 10 to temporarily hold the light source unit 2 on the fixture main body 10. Then, in the light source unit 2, the hooking metal fitting 86 is hooked on the hooking portion 114B of the side wall 111D on the rear side, and the mounting spring 80 of the first fixture 8A is hooked on the hooking portion 114A of the side wall 111C on the front side. It is supported by the accommodating portion 11 of 10.

In the above embodiment, the instrument body 10 has a pair of coupling portions 114, 114, but the instrument body 10 may have a plurality of pairs of coupling portions 114, 114. For example, each of the front side wall 111C and the rear side wall 111D may have two or more hooking portions (joining portions) 114. For example, in each of the side walls 111C and 111D, two or more hooking portions 114 may be provided side by side in the longitudinal direction of the side wall. In this case, the light source unit 2 may have a plurality of pairs of attachments 8 and 8 coupled to the plurality of pairs of coupling portions 114 and 114, respectively. As described above, in the lighting fixture 1, the light source unit 2 may be attached to the fixture main body 10 by connecting at least a pair of fixtures 8 and 8 to at least a pair of connecting portions 114 and 114 of the fixture main body 10. ..

In the above embodiment, the functional unit is a terminal block 13. The terminal block 13 is a functional unit having a function of electrically connecting the power supply unit 6 to another circuit. The functional unit is not limited to the terminal block 13, and may be any unit having a predetermined function and electrically connected to the power supply unit 6. For example, the functional unit includes a sensor, a switch, and the like in addition to the terminal block 13. That is, the functional unit may be a functional unit having a function of giving a desired signal to the power supply unit 6, such as a sensor. Further, the functional unit may be a functional unit having a function of operating (controlled) in response to a signal from the power supply unit 6.

For example, in the light source unit 2, the number of LED modules 3 is not particularly limited. Further, the light source unit 2 does not necessarily have to include the LED module 3, the cover 5, and the wireless communication unit 7.

Further, the lighting fixture 1 is not limited to the embedded lighting fixture, and may be, for example, a directly mounted lighting fixture directly attached to the ceiling.

3. 3. Aspects As is clear from the embodiments and modifications described above, the lighting fixture (1) of the first aspect includes a light source unit (2), a fixture main body (10) to which the light source unit (2) is attached, and the fixture body (10) to which the light source unit (2) is attached. To prepare for. The light source unit (2) has a mounting plate (40) to which the light source (30) is mounted, and at least a pair of mounting tools (8). The instrument body (10) has a bottom wall (110) and at least a pair of joints (114, 114) located at both ends of the bottom wall (110) in a direction orthogonal to the thickness direction. The light source unit (2) is attached to the fixture body (10) by coupling the at least pair of fixtures (8, 8) to the at least pair of coupling portions (114, 114), respectively. The bottom wall (110) has a plurality of bolt insertion holes (1101) through which suspension bolts (90) are inserted. The plurality of bolt insertion holes (1101) are arranged along a first straight line (L10) in a plane orthogonal to the thickness direction of the bottom wall (110). The first straight line (L10) is orthogonal to the second straight line (L20) connecting the at least a pair of connecting portions (114, 114) on the plane. According to the first aspect, the work of attaching the light source unit (2) to the instrument main body (10) can be easily performed.

The luminaire (1) of the second aspect can be realized in combination with the first aspect. In the second aspect, the first straight line (L10) passes through the center between the at least pair of joints (114, 114) in the plane. According to the second aspect, the work of attaching the light source unit 2 to the instrument main body 10 can be performed more easily.

The luminaire (1) of the third aspect can be realized by the combination with the first or the second aspect. In the third aspect, the light source unit (2) further includes a power supply unit (6) for lighting the light source (30). The instrument body (10) further includes a functional unit (13) electrically connected to the power supply unit (6). The power supply unit (6) and the functional unit (13) are located on opposite sides of the first straight line (L10) in the plane. According to the third aspect, the possibility of interference between the power supply unit (6) and the functional unit (13) and the suspension bolt (90) can be reduced.

The luminaire (1) of the fourth aspect can be realized in combination with the third aspect. In a fourth aspect, the light source unit (2) has a first end (201) electrically connected to the power supply unit (6) and a second end (202) electrically connected to the functional unit (13). Further has an electric wire (200) connected to. The light source unit (2) has a holder (43) for holding the electric wire (200). The holder (43) is located on the first straight line (L10) in the plane. According to the fourth aspect, the possibility that the suspension bolt (90) comes into contact with the electric wire (200) can be further reduced.

The luminaire (1) of the fifth aspect can be realized in combination with the fourth aspect. In a fifth aspect, the holder (43) has a cover piece (432) located between the mounting plate (40) and the bottom wall (110), and the cover piece (432) and the cover piece (432). The electric wire (200) is held between the mounting plate (40) and the electric wire (200). According to the fifth aspect, the electric wire (200) can be protected from the suspension bolt (90).

The luminaire (1) of the sixth aspect can be realized by the combination with the fourth or fifth aspect. In the sixth aspect, the holder (43) does not overlap with any of the plurality of bolt insertion holes (1101) in the plane. According to the sixth aspect, the possibility that the suspension bolt (90) comes into contact with the electric wire (200) can be further reduced.

The lighting fixture (1) of the seventh aspect can be realized by the combination with any one of the first to sixth aspects. In the seventh aspect, the first straight line (L10) passes through the position of the center of gravity of the instrument body (10) in the plane. According to the seventh aspect, the instrument body (10) can be attached to the suspension bolt (90) in a stable state.

The luminaire (1) of the eighth aspect can be realized in combination with the seventh aspect. In the eighth aspect, the plurality of bolt insertion holes (1101) include a plurality of pairs of bolt insertion holes (1101A, 1101B, 1101C). The plurality of pairs of bolt insertion holes (1101A, 1101B, 1101C) have different intervals between the pair of bolt insertion holes (1101). Each of the plurality of pairs of bolt insertion holes (1101A, 1101B, 1101C) is point-symmetrical with respect to the position of the center of gravity of the instrument body (10) in the plane. According to the eighth aspect, the instrument main body (10) can be attached in a stable state by the suspension bolt (90).

1 Lighting equipment 2 Light source unit 6 Power supply unit 8 Fixtures 30 LED (light source)
40 Mounting plate 43 Holder 432 Cover piece 200 Electric wire 10 Instrument body 110 Bottom wall 1101 (1101A, 1101B, 1101C) Bolt insertion hole 114 Coupling part 13 Function unit 90 Suspension bolt L10 First straight line L20 Second straight line

Claims (6)

Light source unit and
The fixture body to which the light source unit is attached and
Equipped with
The light source unit has a mounting plate to which a light source is mounted and at least a pair of mounting tools.
The instrument body has a bottom wall and at least a pair of joints located at both ends in a direction orthogonal to the thickness direction of the bottom wall.
The light source unit is attached to the fixture body by coupling the at least pair of fixtures to the at least pair of coupling portions, respectively.
The bottom wall has a plurality of bolt insertion holes through which hanging bolts are inserted.
The plurality of bolt insertion holes are arranged along a first straight line in a plane orthogonal to the thickness direction of the bottom wall.
The first straight line is orthogonal to the second straight line connecting the at least a pair of joints in the plane.
A plurality of insertion holes for supplying power lines for power supply are provided at positions different from those on the first straight line.
The plurality of insertion holes are provided at positions different from those on the first straight line, and at least one of the plurality of insertion holes is provided on the second straight line.
lighting equipment. The first straight line passes through the center between the at least pair of joints in the plane.
The lighting fixture according to claim 1. The light source unit further includes a power supply unit for lighting the light source.
The instrument body further comprises a functional unit that is electrically connected to the power supply unit.
The power supply unit and the functional unit are located on opposite sides of the first straight line in the plane.
The lighting fixture of claim 2 . Light source unit and
The fixture body to which the light source unit is attached and
Equipped with
The light source unit has a mounting plate to which a light source is mounted and at least a pair of mounting tools.
The instrument body has a bottom wall and at least a pair of joints located at both ends in a direction orthogonal to the thickness direction of the bottom wall.
The light source unit is attached to the fixture body by coupling the at least pair of fixtures to the at least pair of coupling portions, respectively.
The bottom wall has a plurality of bolt insertion holes through which hanging bolts are inserted.
The plurality of bolt insertion holes are arranged along a first straight line in a plane orthogonal to the thickness direction of the bottom wall.
The first straight line is orthogonal to the second straight line connecting the at least a pair of joints in the plane.
A plurality of insertion holes for supplying power lines for power supply are provided at positions different from those on the first straight line.
The light source unit further includes a power supply unit for lighting the light source.
The instrument body further comprises a functional unit that is electrically connected to the power supply unit.
The power supply unit and the functional unit are located on the opposite sides of the first straight line in the plane.
The light source unit further comprises an electric wire whose first end is electrically connected to the power supply unit and whose second end is electrically connected to the functional unit.
The light source unit has a holder for holding the electric wire.
The holder is located on the first straight line in the plane.
Lighting equipment. The holder has a cover piece located between the mounting plate and the bottom wall, and holds the electric wire between the cover piece and the mounting plate.
The lighting fixture of claim 4. The holder does not overlap any of the plurality of bolt insertion holes in the plane.
The lighting fixture according to claim 4 or 5.

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