JP2017224489A - Lighting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting device which achieves reduction of misalignment and a gap occurring between the lighting device and another lighting device connected thereto.SOLUTION: A lighting device 1 has a light source and a device body 2 supporting the light source. The device body 2 includes: a bottom plate 20; a plate-like end member (a second end member 23) erected from an end of the bottom plate 20; and a fastening member (a male screw 25). The end member (the second end member 23) is configured to be fastened to an end member (a second end member 23) included in another device body 2 from a direction along a thickness direction (a lateral direction) of the end member (the second end member 23) by a fastening member (the male screw 25).SELECTED DRAWING: Figure 11

Description

  The present invention relates to a lighting fixture, and more particularly to a lighting fixture in which fixture main bodies are connected to each other.

  As a conventional example, a lighting apparatus described in Patent Document 1 is illustrated. The lighting fixture of patent document 1 is provided with the fixture main body formed in the elongate rectangular box shape. The instrument body has a connecting portion at each of both ends in the longitudinal direction. Each connecting portion has a bolt stop hole into which a suspension bolt is inserted.

  Then, the two instrument bodies are arranged along the longitudinal direction, and one suspension bolt is inserted into the bolting hole of the connecting part of one instrument body and the bolting hole of the connecting part of the other instrument body, By tightening a nut on the suspension bolt, the two instrument bodies are connected.

JP 2000-243104 A

  However, in the structure of the lighting fixture described in Patent Document 1, it has been difficult to reduce the gap or gap generated between the two fixture main bodies to be connected.

  The objective of this invention is providing the lighting fixture which can aim at reduction of the shift | offset | difference and clearance gap which arise between other connected instrument main bodies.

  The lighting fixture which concerns on 1 aspect of this invention has a light source and the fixture main body which supports the said light source. The instrument body includes a bottom plate, a plate-like end member that stands up from an end of the bottom plate, and a fastening member. The said end member is comprised by the said fastening member so that fastening is possible from the direction along the thickness direction with respect to the end member with which the said other instrument main body is equipped.

  The lighting fixture of this invention has the effect that the shift | offset | difference and clearance gap which arise between other connected fixture main bodies can be aimed at.

FIG. 1 is an exploded perspective view of a lighting fixture according to an embodiment of the present invention. FIG. 2 is a perspective view of the luminaire described above. FIG. 3 is a side view of the same luminaire as seen from the front. FIG. 4 is a bottom view of the same lighting fixture. FIG. 5 is a top view of the same lighting fixture. FIG. 6 is a cross-sectional view of the same luminaire as seen from the right direction. FIG. 7 is a side view of the luminaire as seen from the left direction. FIG. 8 is a perspective view of a light source unit in the same lighting fixture. FIG. 9 is a perspective view in which the light source unit is partially omitted. FIG. 10 is a perspective view in which a part of the two lighting fixtures is not shown before the fixture main body is connected. FIG. 11: is the perspective view which abbreviate | omitted partially after connecting the instrument main body in the two lighting fixtures same as the above. FIG. 12 is a perspective view with a part omitted in a state where the two lighting fixtures are connected. FIG. 13: is the side view seen from the left direction of the modification of a lighting fixture same as the above.

  Hereinafter, the lighting fixture 1 which concerns on one Embodiment of this invention is demonstrated in detail with reference to drawings. The configurations described in the following embodiments are merely examples of the present invention. The present invention is not limited to the following embodiments, and various modifications can be made according to design and the like as long as the effects of the present invention can be achieved.

  The lighting fixture 1 (hereinafter abbreviated as the lighting fixture 1) according to the present embodiment includes a fixture main body 2 and a light source unit 3, as shown in FIGS. However, in the following description, unless otherwise specified, in FIG. 1, the vertical and horizontal directions and the front and rear directions of the lighting fixture 1 are defined.

  The instrument main body 2 is formed in a long rectangular box shape by a main body portion formed in a long square hook shape and a pair of end members attached to both ends in the longitudinal direction of the main body portion. The main body has a bottom plate 20 and a pair of side plates 21. The bottom plate 20 is formed in a long rectangular plate shape. Each of the pair of side plates 21 is formed in a long rectangular plate shape and protrudes downward from the front end and the rear end of the bottom plate 20 over the entire length in the left-right direction. However, the lower end portions of the pair of side plates 21 are bent outward.

  The bottom plate 20 is provided with a rectangular insertion hole 200 substantially at the center in the longitudinal direction. In addition, the bottom plate 20 has a plurality of (for example, three) bolt insertion holes 201 provided on both left and right sides of the insertion hole 200. Further, the bottom plate 20 is provided with a pair of spring mounting holes 202 near both ends in the longitudinal direction (left-right direction). The pair of spring mounting holes 202 are preferably formed in an oval shape whose major axis direction is parallel to the width direction (front-rear direction) of the bottom plate 20. A terminal block 24 is attached to the upper surface of the bottom plate 20 (see FIG. 1). The terminal block 24 is electrically connected to a power line serving as a power supply path from a power system (commercial AC power supply). The bottom plate 20 and the pair of side plates 21 (main body portion) are preferably formed integrally by bending a metal plate such as a steel plate.

  The pair of end members includes a first end member 22 attached to a first end (right end) in the longitudinal direction of the main body and a second end member 23 attached to a second end (left end) in the longitudinal direction of the main body. Including. The first end member 22 is formed in a rectangular plate shape. In addition, the lower end portion of the first end member 22 is bent outward (rightward). The first end member 22 is attached to the first end of the main body portion and closes the first end of the main body portion (see FIGS. 1 and 7). The second end member 23 is attached to the second end of the main body portion and partially closes the second end of the main body portion. However, the 2nd end member 23 is comprised so that another lighting fixture (The lighting fixture which has the structure same as the lighting fixture 1) can be connected. Hereinafter, a detailed configuration of the second end member 23 will be described.

  The second end member 23 includes a main body portion 230, a pair of side wall portions 231, a protruding wall portion 232, a hooking protrusion 233, and a pair of fitting protrusions 234 (see FIGS. 5 to 7 and 10). . However, the main body portion 230, the pair of side wall portions 231, the protruding wall portion 232, the hooking protrusion portion 233, and the pair of fitting protrusion portions 234 are integrally formed by processing a metal plate such as a steel plate.

  As shown in FIG. 7, the main body portion 230 includes a substantially rectangular plate-shaped reinforcing portion 2300 and a pair of leg portions 2301 that protrude downward from the lower end of the reinforcing portion 2300. The main body 230 has a rectangular groove 2302 between the pair of legs 2301 whose longitudinal direction coincides with the vertical direction. Further, the lower ends of the pair of leg portions 2301 are inclined obliquely so as to be parallel to a first reflecting plate 51A and a second reflecting plate 51B, which will be described later, when viewed from the left-right direction (the direction perpendicular to the paper surface in FIG. 7). ing. Furthermore, an internal thread part 2303 is formed on one leg part (first leg part 2301A) of the pair of leg parts 2301 (see FIG. 6). An insertion groove 2304 is formed in the other leg part (second leg part 2301B) of the pair of leg parts 2301. The insertion groove 2304 is formed in an oval shape whose longitudinal direction coincides with the vertical direction and whose lower end is opened (see FIG. 7).

  The pair of side wall portions 231 protrude in the same direction and parallel to each other from the front and rear ends of the main body portion 230 (see FIGS. 6 and 10). In addition, each of the pair of fitting protrusions 234 is cut and raised in a rectangular plate shape from the corresponding side wall portion 231 (see FIG. 7). Further, columnar protrusions are formed on the outer side surfaces of the pair of side wall portions 231 (side surfaces opposite to the main body portion 230).

  As shown in FIG. 6, the protruding wall portion 232 protrudes from the upper end of the main body portion 230 in the same direction as the side wall portion 231. The protruding wall portion 232 is formed in a shape in which the width of the tip portion farther from the main body portion 230 is narrower than the width of the rear end portion closer to the main body portion 230 when viewed from the vertical direction. The hook protrusion 233 is formed in a rectangular plate shape, and protrudes downward from the tip of the protrusion wall 232 (the tip portion thereof).

  The hooking protrusion 233 is hooked in the hooking hole 203 provided in the bottom plate 20 (see FIG. 10). Further, each of the pair of fitting protrusions 234 is fitted into the corresponding fitting recess 210 of the fitting recesses 210 provided on each of the pair of side plates 21 (see FIG. 10). Further, each of the pair of protrusions formed on the pair of side wall portions 231 is fitted into the corresponding fitting hole 211 of the fitting holes 211 provided on each of the pair of side plates 21 from the inside. . The second end member 23 hooks the hooking protrusion 233 into the hooking hole 203, fits the pair of fitting protrusions 234 into the fitting recess 210, and fits the pair of protrusions into the fitting hole 211, thereby bottom plate 20 and a pair of side plates 21. However, the second end member 23 can be attached to both ends of the bottom plate 20 and the pair of side plates 21 in the longitudinal direction.

  The light source unit 3 includes a light guide plate 4, a support member 5, a light source unit 6, a power supply block 7, and a pair of attachment spring blocks 8 (see FIGS. 1, 8, and 9).

  The light guide plate 4 is preferably formed in a long rectangular plate shape by a synthetic resin material having translucency such as acrylic resin or polycarbonate resin. The light guide plate 4 is provided with circular insertion holes 40 at three locations near the center and both ends in the longitudinal direction (left-right direction) of the upper part (see FIG. 1). These three insertion holes 40 penetrate the light guide plate 4 in the thickness direction (front-rear direction). The light guide plate 4 is preferably formed with fine irregularities on the front and rear surfaces.

  The light source unit 6 includes a large number of LEDs (light emitting diodes) 60 and a substrate 61 formed in a long rectangular plate shape (see FIG. 6). A large number of LEDs 60 are mounted on the lower surface of the substrate 61 in a line along the longitudinal direction. A conductor (printed wiring) for electrically connecting these LEDs 60 to each other is formed on the lower surface of the substrate 61, and a connector for electrically connecting the conductor to the power supply unit 70 of the power supply block 7 is mounted. ing.

  The power supply block 7 includes a power supply unit 70, a block case 71, and a terminal block 72. The power supply unit 70 converts AC power supplied from the power system via the terminal block 24 into DC power. Then, DC power output from the power supply unit 70 is supplied to the light source unit 6 and the LED 60 is lit.

  The block case 71 includes a rectangular plate-shaped mounting plate 710, an upper plate 711 protruding forward from the upper end of the mounting plate 710 in the left-right direction, a side plate 712 protruding forward along the left end of the mounting plate 710, And a front plate 713 protruding downward from the front end of the upper plate 711. However, it is preferable that the mounting plate 710, the upper plate 711, the side plate 712, and the front plate 713 are integrally formed by bending a metal plate such as a steel plate. The power supply unit 70 is screwed and attached to the front surface of the mounting plate 710. A signal line terminal block 72 is attached to the right end of the front surface of the attachment plate 710. The signal line is a transmission medium through which a dimming signal is transmitted from an external controller or the like. The power supply unit 70 receives the dimming signal via the terminal block 72 and adjusts the direct-current power according to the received dimming signal to dimm the light source unit 6.

  A pair of attachment spring block 8 has the same structure (refer FIG.1 and FIG.8). As shown in FIG. 9, the attachment spring block 8 has an attachment spring 80, a spring holder 82, and a spring attachment fitting 81. The attachment spring 80 is constituted by a torsion coil spring. The attachment spring 80 has a solenoidal coil portion 800 and a pair of long arms 801. The spring mounting bracket 81 has a main piece 810, a pair of side pieces 811, a protrusion 812, and a hooking portion 813. The main piece 810 is formed in a rectangular plate shape. The pair of side pieces 811 are formed in a rectangular plate shape, and protrude downward from both ends of the main piece 810 in the short direction (front-rear direction). The protrusion 812 is formed in a flat plate shape and protrudes upward from a first end (left end in FIG. 9) in the longitudinal direction (left-right direction) of the main piece 810. Furthermore, the tip portion (upper end portion) 8120 of the protrusion 812 is formed in a curved shape protruding upward (for example, an outline viewed from the left-right direction is an arc). The hook portion 813 is formed in a U-shape and protrudes upward from the second end (right end in FIG. 9) in the longitudinal direction (left-right direction) of the main piece 810. Claws 8130 protrude from both ends of the hook portion 813 in the longitudinal direction (front-rear direction) (see FIG. 9). Each of the pair of claws 8130 can hook the corresponding arm 801 of the pair of arms 801 of the attachment spring 80 in a detachable manner. However, it is preferable that the main piece 810, the pair of side pieces 811, the projecting portion 812, and the hooking portion 813 are integrally formed by bending a metal plate such as a steel plate.

  The spring holder 82 includes a semi-annular holding piece 820 and a rectangular plate-like fixing piece 821. The fixed piece 821 protrudes outward from one end in the circumferential direction of the holding piece 820 along the radial direction of the holding piece 820. The holding piece 820 and the fixing piece 821 are preferably formed integrally by bending a metal plate such as a steel plate. Further, both ends of the holding piece 820 and the fixing piece 821 in the short direction (front-rear direction) are bent upward. The spring holder 82 is fixed to the spring mounting member 81 by screwing the fixing piece 821 near the first end of the main piece 810. The spring holder 82 holds the coil portion 800 by inserting the holding piece 820 into the coil portion 800 of the attachment spring 80. The coil portion 800 of the attachment spring 80 is held by the holding piece 820 of the spring holder 82 so as to be rotatable along the circumferential direction of the coil portion 800. However, a rectangular through hole 814 is provided near the first end of the main piece 810 to avoid contact with the coil portion 800 (see FIG. 9).

  The support member 5 includes a first member 5A, a second member 5B, and a third member 5C (see FIGS. 6, 8, and 9). The first member 5A includes a rectangular plate-shaped first support plate 50A, a first rectangular plate-shaped first reflecting plate 51A, a first bottom plate 52A, and a first side plate 53A. The first reflecting plate 51A protrudes obliquely downward from the first end (lower end) in the short direction (vertical direction) of the first support plate 50A over the entire length. However, the tip (lower end) of the first reflecting plate 51A is folded obliquely upward. The first bottom plate 52A is formed in a rectangular plate shape whose dimension in the longitudinal direction (left-right direction) is slightly shorter than that of the first support plate 50A. The first bottom plate 52A protrudes outward (the direction in which the first reflecting plate 51A protrudes) from the upper end of the first support plate 50A. The first side plate 53A is formed in a rectangular plate shape and protrudes upward from the front end (front end) of the first bottom plate 52A.

  The second member 5B includes a rectangular plate-like second support plate 50B, a rectangular plate-like second reflecting plate 51B, a second bottom plate 52B, and a second side plate 53B. The second reflecting plate 51B protrudes obliquely downward from the first end (lower end) in the short direction (vertical direction) of the second support plate 50B over the entire length. However, the tip (lower end) of the second reflecting plate 51B is folded back obliquely upward. The second bottom plate 52B is formed in a rectangular plate shape that is slightly shorter in the longitudinal direction (left-right direction) than the second support plate 50B. The second bottom plate 52B protrudes outward (the direction in which the second reflecting plate 51B protrudes) from the upper end of the second support plate 50B. The second side plate 53B is formed in a rectangular plate shape and protrudes upward from the front end (rear end) of the second bottom plate 52B. However, the second member 5B has a mirror image relationship with the first member 5A.

  The third member 5C has a third bottom plate 52C and a pair of third side plates 53C. The third bottom plate 52C is formed in a rectangular plate shape having the same longitudinal dimension as the first bottom plate 52A of the first member 5A and the second bottom plate 52B of the second member 5B. Each of the pair of third side plates 53C is formed in a rectangular plate shape, and protrudes downward from the front end and the rear end of the third bottom plate 52C. The first side plate 53A of the first member 5A is screwed to the front surface of the front third side plate 53C, and the second side plate 53B of the second member 5B is screwed to the rear surface of the rear third side plate 53C. The first member 5A, the second member 5B, and the third member 5C are combined to form the support member 5. Here, a rectangular tube-shaped accommodation portion 54 is formed by the first bottom plate 52A, the second bottom plate 52B, the third member 5C, the first side plate 53A, and the second side plate 53B. The accommodating part 54 accommodates the light source part 6 inside. The board | substrate 61 of the light source part 6 is screwed to the upper wall (3rd bottom plate 52C) of the accommodating part 54 (refer FIG. 6). The accommodating part 54 is formed with a linear groove 540 along the longitudinal direction at the center in the front-rear direction. And all LED60 of the light source part 6 accommodated in the accommodating part 54 has opposed the groove | channel 540 along the up-down direction (refer FIG. 6).

  Each of the first support plate 50A and the second support plate 50B is provided with two insertion holes (referred to as first insertion holes) near both ends in the longitudinal direction, and one insertion hole (referred to as a second insertion hole) in the center in the longitudinal direction. ) Is provided. Each of the two first insertion holes is preferably formed in an oval shape whose major axis direction is parallel to the longitudinal direction of the first support plate 50A and the second support plate 50B. The second insertion hole is preferably formed in an oval shape in which the major axis direction is parallel to the short direction (vertical direction) of the first support plate 50A and the second support plate 50B.

  The support member 5 supports the light guide plate 4 so as to be sandwiched between the first support plate 50A and the second support plate 50B. More specifically, the first support plate 50 </ b> A, the second support plate 50 </ b> B, and the first end of the light guide plate 4 with the upper portion (first end) of the light guide plate 4 inserted in the groove 540 of the housing portion 54. Are coupled by three coupling tools 55 (see FIGS. 6 to 9). Each of these three connectors 55 includes a headed stud (stud) 550 and a nut (push leaf spring nut) 551 (see FIG. 6). The shafts 5500 of the three flanges 550 are respectively inserted into the two first insertion holes and the one second insertion hole of the second support plate 50B. Grooves are formed in the outer circumferential surface of these shafts 5500 along the circumferential direction. The three nuts 551 are fitted into the grooves of the three shafts 5500 protruding from the first insertion hole and the second insertion hole of the first support plate 50A, respectively. That is, the three flanges 550 are removed by the three nuts 551 in a state where the shaft 5500 is inserted into the three insertion holes of the first support plate 50A and the second support plate 50B and the three insertion holes 40 of the light guide plate 4. Stopped. As a result, the light guide plate 4 is supported by the first support plate 50A and the second support plate 50B in a state where the first end portion is sandwiched from the thickness direction (front-rear direction) (see FIGS. 6 to 9).

  Here, the upper surface of the light guide plate 4 supported by the support member 5 (the first support plate 50A and the second support plate 50B) faces all the LEDs 60 of the light source unit 6 (see FIG. 6). Therefore, almost all of the light (light flux) emitted from the LED 60 of the light source unit 6 enters the light guide plate 4 from the upper surface (hereinafter also referred to as an incident surface) of the light guide plate 4. The light incident on the light guide plate 4 is emitted from the surface of the light guide plate 4 to the outside of the light guide plate 4 while traveling in the light guide plate 4. In the following description, the front surface, the rear surface, the left side surface, the right side surface, and the lower surface of the light guide plate 4 may be collectively referred to as the surface of the light guide plate 4.

  Two attachment spring blocks 8 are attached to each of the left and right ends of the accommodating portion 54 of the support member 5 (see FIG. 1). In the two mounting spring blocks 8, the pair of side pieces 811 of the spring mounting bracket 81 are screwed to the front and rear walls (the first side plate 53A, the second side plate 53B, and the pair of third side plates 53C) of the accommodating portion 54, respectively. As a result, it is attached to the support member 5 (see FIGS. 1 and 6 to 9). The power supply block 7 is attached to the accommodating portion 54 by screwing the lower portions of the mounting plate 710 and the front plate 713 of the block case 71 to the front and rear walls of the accommodating portion 54 (see FIG. 1 and FIG. 8).

  Here, the light source unit 3 turns on the light source unit 6 by supplying power from the power supply unit 70. Light emitted from the light source unit 6 (the LED 60 thereof) enters the light guide plate 4 from the incident surface of the light guide plate 4 and is emitted from the surface of the light guide plate 4 while being guided through the light guide plate 4. The front and rear surfaces of the first end of the light guide plate 4 are covered with the first support plate 50A and the second support plate 50B, respectively. Accordingly, the light emitted from the front surface and the rear surface of the first end portion of the light guide plate 4 is reflected by the surfaces of the first support plate 50A and the second support plate 50B that are in contact with the light guide plate 4, and returns into the light guide plate 4. . However, it is preferable that the surfaces of the first support plate 50A and the second support plate 50B that are in contact with the light guide plate 4 are smooth surfaces (surfaces with high reflectivity) with little unevenness.

  Light emitted from the surface of the light guide plate 4 is diffused by fine irregularities formed on the surface of the light guide plate 4. Of the surface of the light guide plate 4, part of the light emitted and diffused from the front surface and the rear surface of the light guide plate 4 travels into the instrument body 2. The light traveling toward the inside of the instrument body 2 is reflected by the respective reflecting surfaces (lower surfaces) of the first reflecting plate 51A and the second reflecting plate 51B arranged in the instrument body 2. The light reflected by these reflecting surfaces is irradiated below the lighting fixture 1. That is, since the luminaire 1 has the reflecting plates (the first reflecting plate 51A and the second reflecting plate 51B), the light emitted from the light guide plate 4 (depending on the dimensions and the inclination angle of the reflecting plate) ( It is possible to improve the ease of controlling the light distribution characteristics of the light flux. However, the support member 5 may have only one reflector (the first reflector 51A or the second support plate 50B).

  Next, the procedure of construction work in the case where two lighting fixtures 1 are connected and installed on the ceiling will be described. First, the worker who performs the construction work inserts the first instrument body 2 into the embedded hole 11 provided in the ceiling finishing material 10 (see FIGS. 6 and 7). The operator inserts a plurality of suspension bolts embedded downward in the building housing into the plurality of bolt insertion holes 201 of the bottom plate 20 of the first instrument body 2, and puts nuts on the plurality of suspension bolts. The first instrument body 2 is attached to a plurality of suspension bolts by tightening. At this time, the gap between the instrument main body 2 and the embedding hole 11 on the lower surface of the ceiling finishing material 10 is hidden by the lower end portion of the side plate 21 bent upward (see FIGS. 6 and 7). In addition, the worker electrically connects the power line from the power system to the terminal block 24 attached to the bottom plate 20 of the appliance body 2.

  Subsequently, the operator screws the male screw 25 into the female screw portion 2303 of the second end member 23 of the second instrument body 2 (see FIG. 10). Then, the operator inserts the second instrument main body 2 into the embedding hole 11 of the ceiling finishing material 10 and inserts the second instrument main body 2 into the groove 2302 of the second end member 23 of the first instrument main body 2. The male screw 25 of the second end member 23 of the main body 2 is inserted (see FIG. 11). Then, the operator attaches the second instrument body 2 to a plurality of suspension bolts. Thereafter, the operator inserts another male screw 25 into the groove 2302 of the second end member 23 of the second instrument body 2, and inserts the other male screw 25 into the second end member 23 of the first instrument body 2. Are screwed into the female screw portion 2303. The operator fixes the second end members 23 of the two instrument bodies 2 by tightening the two male screws 25 (see FIG. 11).

  The operator inserts the pair of arms 801 of the two attachment springs 80 into the two spring attachment holes 202 (see FIG. 5) provided in the bottom plate 20 of the first instrument body 2. At this time, the coil portions 800 of the two attachment springs 80 are twisted. The hooks 802 provided at the respective tips of the pair of arms 801 of the two mounting springs 80 are hooked on the edges of the two spring mounting holes 202 in the longitudinal direction (front-rear direction) on the upper surface of the bottom plate 20. . As a result, the first light source unit 3 is temporarily held by the first instrument body 2 while being suspended from the bottom plate 20 by the two attachment springs 80. The operator temporarily holds the first light source unit 3 on the first instrument body 2 and connects the terminal block 24 and the power supply unit 70 of the first instrument body 2 with electric wires (not shown). Connect electrically.

  Further, the operator pushes up the first light source unit 3 and accommodates it in the first instrument body 2. Then, a pair of arms 801 of the two attachment springs 80 inserted upward in the two spring attachment holes 202 of the bottom plate 20 spreads in the front-rear direction, and at the edges of the front and rear ends of the two spring attachment holes 202 of the bottom plate 20. Each arm 801 is caught (see FIGS. 2 and 5). The support member 5 is pulled upward by the spring force of the attachment spring 80, and the tip portion 8120 of the protrusion 812 of the spring attachment fitting 81 is applied to the bottom plate 20 (the lower surface thereof) of the first instrument body 2. It is supported by the 1st instrument main body 2 in the state. That is, the first light source unit 3 is supported by the first instrument body 2 by the spring force of the two attachment springs 80 while being accommodated in the first instrument body 2 (FIGS. 4 to 4). (See FIG. 7). However, the power supply block 7 of the first light source unit 3 is inserted into the insertion hole 200 provided in the bottom plate 20 and protrudes out of the bottom plate 20 of the first instrument body 2 (see FIG. 2). The first lighting fixture 1 is constructed in a state of being embedded in the embedding hole 11 of the ceiling finishing material 10 as described above. The second light source unit 3 is also attached to the second instrument body 2 in the same procedure as the first light source unit 3. As described above, the construction is performed in a state where the two lighting fixtures 1 are connected (see FIG. 12).

  Here, each 2nd end member 23 of the two lighting fixtures 1 is formed in the same shape and the same dimension. That is, these two second end members 23 are identical parts. Further, the second end member 23 is formed into a line-symmetric figure (shape) having a center line in the front-rear direction (a line parallel to the vertical direction) as an axis of symmetry, except for the female screw portion 2303 and the insertion groove 2304. (See FIG. 7). Therefore, the second end members 23 of the two lighting fixtures 1 are fastened to the female screw portions 2303 corresponding to the two male screws 25, respectively, and the thickness direction of the second end member 23 (the longitudinal direction of the fixture body 2). Are closely joined together. Therefore, the lighting fixture 1 can aim at reduction of the shift | offset | difference and clearance gap which arise between the fixture main bodies 2 of the other connected lighting fixtures 1. FIG.

  When three or more lighting fixtures 1 are connected in a straight line and in a row, the fixture body 2 of the lighting fixture 1 excluding the two lighting fixtures 1 located at both ends of the row has both ends in the longitudinal direction. A second end member 23 is attached to each of the two. Thus, by attaching the 2nd end member 23 to each of the both ends of the longitudinal direction of the instrument main body 2, the three or more lighting fixtures 1 can be connected in a line and in a line.

  Further, the second end member 23 is inserted through the female screw portion 2303 into which one male screw 25 of the two male screws 25 is screwed and the other one male screw 25 of the two male screws 25. And a groove 2304. The insertion groove 2304 has an end (lower end) opposite to the bottom plate 20 in the second end member 23. For this reason, as above-mentioned, the two instrument main bodies 2 can be connected in the state which screwed the external thread 25 in the internal thread part 2303 previously, and simplification of construction work can be aimed at.

  By the way, like the lighting fixture 1 which concerns on the modification of this embodiment, the lower end of the light-guide plate 4 is protruded ahead (down) rather than each front-end | tip (lower end) of 1st reflecting plate 51A and 2nd reflecting plate 51B. It is not necessary (see FIG. 13). The lighting fixture 1 which concerns on a modification does not protrude the lower end of the light-guide plate 4 below the lower end of the 1st reflecting plate 51A and the 2nd reflecting plate 51B. In other words, the lighting fixture 1 according to the modification houses the light guide plate 4 inside the fixture body 2. Therefore, the lighting fixture 1 which concerns on a modification can irradiate the light radiate | emitted from the light-guide plate 4 to the comparatively narrow range of the direct under of the light-guide plate 4, and its periphery.

  Here, in the lighting fixture 1 according to the present embodiment, the light source unit 3 has the light guide plate 4. However, the light source unit 3 of the luminaire 1 may not include the light guide plate 4. For example, the illumination space may be configured to irradiate light emitted from a light source such as a light emitting diode directly or through a light diffusing cover.

  As described above, the lighting fixture 1 includes the light source (light source unit 6) and the fixture main body 2 that supports the light source (light source unit 6). The instrument main body 2 includes a bottom plate 20, a plate-like end member (second end member 23) standing from the end of the bottom plate 20, and a fastening member (male screw 25). The end member (second end member 23) is a fastening member (male screw 25) from a direction along the thickness direction (left-right direction) with respect to an end member (second end member 23) provided in another instrument body 2. It is comprised so that fastening is possible.

  If the lighting fixture 1 is comprised as mentioned above, each 2nd end member 23 of two adjacent lighting fixtures 1 will follow the thickness direction of the 2nd end member 23 with two fastening members (male screw 25). So that they are closely overlapped. As a result, the luminaire 1 can reduce the deviation and gap generated between the luminaire 1 and another connected appliance body 2.

  Moreover, in the lighting fixture 1, the fixture body 2 preferably includes a rectangular plate-like bottom plate 20 and a pair of side plates 21 erected from both ends in the first width direction (front-rear direction) of the bottom plate 20. Moreover, it is preferable that the instrument main body 2 is provided with the end member (2nd end member 23) which stands up from the end of the baseplate 20 of the 2nd width direction (left-right direction) crossing the 1st width direction. The end members (second end members 23) are arranged at intervals along the first width direction, and a plurality of insertion portions (internal screw portions 2303 and insertion grooves) through which the fastening members (male screws 25) are inserted respectively. 2304).

  If the lighting fixture 1 is comprised as mentioned above, the two fixture main bodies 2 can be firmly connected by the fastening member (male screw 25).

  Furthermore, in the lighting fixture 1, it is preferable that a some insertion part contains a 1st insertion part and a 2nd insertion part. It is preferable that the first insertion portion is formed of a female screw (female screw portion 2303) into which a fastening member including the male screw 25 is screwed. It is preferable that the second insertion portion is formed by a groove having one end opened, and an end (lower end) opposite to the bottom plate 20 is opened in the end member (second end member 23).

  If the lighting fixture 1 is comprised as mentioned above, the (male screw 25) screwed in the 2nd penetration part (female screw part 2303) of the instrument main body 2 constructed | assembled previously will be the 1st of the instrument main body 2 constructed | assembled later. One insertion portion (female screw portion 2303) is inserted. As a result, the two instrument main bodies 2 can be connected in a state where the male screw 25 is screwed into the female screw portion 2303 in advance, and the construction work can be simplified.

DESCRIPTION OF SYMBOLS 1 Lighting fixture 2 Appliance main body 6 Light source part (light source)
20 Bottom plate 21 Side plate 23 Second end member (end member)
25 Male thread (fastening member)
2303 Female thread part (insertion part, first insertion part)
2304 Insertion groove (insertion part, second insertion part)

Claims (3)

A light source, and an instrument body that supports the light source,
The instrument body includes a bottom plate, a plate-like end member that stands from an end of the bottom plate, and a fastening member,
The said end member is comprised by the said fastening member from the direction along the thickness direction with respect to the end member with which the said other fixture main body is equipped, The lighting fixture characterized by the above-mentioned. The instrument body includes a rectangular plate-shaped bottom plate, a pair of side plates standing from both ends in the first width direction of the bottom plate, and an end of the bottom plate in the second width direction intersecting the first width direction. The end member standing up from
2. The end member according to claim 1, wherein the end member has a plurality of insertion portions that are arranged at intervals along the first width direction and through which the fastening member is inserted. lighting equipment. The plurality of insertion portions are made of female screws, and include a first insertion portion into which the fastening member made of an external screw is screwed, and a second insertion portion made of a groove having one end opened,
The lighting apparatus according to claim 2, wherein the second insertion portion has an end opposite to the bottom plate of the end member that is open.

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