JP6473994B2 - lighting equipment - Google Patents

Description

  The present invention relates to a lighting fixture, and more particularly to a lighting fixture attached to a construction material such as a ceiling material.

  As a conventional example, a lighting apparatus described in Patent Document 1 is illustrated. The lighting fixture described in Patent Literature 1 includes a light source unit, a fixture body, a frame, a panel, a lighting device, and the like. The instrument body has a rectangular flat top plate and a side plate bent downward from the periphery of the top plate, and is formed in a rectangular box shape with the bottom open and attached to the surface (ceiling surface) of the ceiling material It is done.

  The lighting device includes a printed wiring board on which circuit elements constituting the lighting circuit are mounted, and a metal case that houses the printed wiring board. The lighting circuit is configured to convert an AC voltage / AC current supplied from an external power source into a DC voltage / DC current.

  The light source unit includes an LED module and a reflector. The LED module is configured by mounting a plurality of LEDs on one surface of a substrate. The reflector has a rectangular flat plate-shaped mounting plate and four reflecting plates bent downward from the periphery of the mounting plate, and is formed in a box shape having an open lower surface. An LED module is attached to the lower surface of the mounting plate. The case of the lighting device is screwed to the upper surface of the mounting plate.

JP 2014-232713 A

  However, the conventional example includes a step of screwing the case of the lighting device on the mounting plate, so that it is difficult to improve the workability of the assembling work and shorten the assembling time.

  The present invention has been made in view of the above problems, and an object of the present invention is to improve the workability of assembly work and shorten the assembly time.

  The lighting fixture of the present invention includes a fixture main body and a lighting unit attached to the fixture main body, and the lighting unit includes one to a plurality of light source units, and a power supply device that supplies power to the light source unit to light it. A mounting plate on which the light source unit is mounted on the front surface and the power supply device is mounted on the back surface, and the power supply device includes a circuit board constituting a power supply circuit for generating the power, and the circuit board. The case is formed in a box shape with one surface open, and the mounting plate is a vertical plate portion that stands up from the back surface in the normal direction of the back surface, and the vertical plate portion It has a projecting plate portion that protrudes from the tip so as to face the back surface, and a holding portion, and is configured such that the power supply device is inserted into a space surrounded by the back surface, the vertical plate portion, and the projecting plate portion. ,Previous Holding unit may be configured to hold the casing by hitting to the case.

  The lighting apparatus of the present invention has an effect that it is possible to improve the workability of assembly work and shorten the assembly time.

It is a disassembled perspective view which shows embodiment of the lighting fixture which concerns on this invention. It is a disassembled perspective view of a lighting fixture same as the above. It is a perspective view of a lighting fixture same as the above. It is sectional drawing of a lighting fixture same as the above. It is a side view of the state where the light source unit is shown and the cover end is removed. It is a circuit diagram of the power supply unit and functional unit in the same as the above. It is a perspective view which shows the case (1st case) of the power supply device same as the above. It is the perspective view which abbreviate | omitted partially which shows the lighting unit in the same as the above. It is the side view which abbreviate | omitted partially which shows the lighting unit in the same as the above. It is the disassembled perspective view which abbreviate | omitted one part which shows the lighting unit in the same as the above. FIG. 11A is a plan view of the lighting unit in the above, and FIG. 11B is a plan view in which a part of the lighting unit in the above is omitted.

  An embodiment of a lighting fixture according to the present invention will be described in detail with reference to the drawings. In addition, although embodiment described below illustrates embodiment of the lighting fixture attached to a ceiling material (ceiling finishing material), the lighting fixture of this embodiment is attached to construction materials other than ceiling materials, such as a wall material. It may be a lighting fixture to be used. Further, in the following description, unless otherwise specified, the vertical and horizontal directions and the front and rear directions are defined in the direction shown in FIG.

  The lighting fixture of this embodiment is provided with the fixture main body 1 and the lighting unit 2 attached to the fixture main body 1 so that attachment or detachment is possible, as shown in FIGS.

  The instrument main body 1 is preferably formed in a rectangular box shape having an open lower surface by combining a rectangular tube-shaped frame body 10 and a rectangular flat plate-like base plate 11.

  The frame 10 includes a pair of first side plates 100 facing in the left-right direction, a pair of second side plates 101 facing in the front-rear direction, and a flange 102. The first side plate 100 is a rectangular plate-like vertical plate 1000, an inclined plate 1001 that protrudes obliquely downward from the lower end edge of the vertical plate 1000, and protrudes in an opposite direction and horizontally from the upper end edge of the vertical plate 1000. The attachment piece 1002 is integrally formed of a metal plate such as a steel plate.

  The second side plate 101 includes a trapezoidal vertical plate 1010, a mounting piece 1011 that protrudes inward and horizontally from the upper edge of the vertical plate 1010, and a pair of joining pieces 1012 that protrude upward from both ends of the vertical plate 1010. Are integrally formed of a metal plate such as a steel plate.

  As for the 1st side plate 100, the 2nd side plate 101 is joined to the both ends in a longitudinal direction (front-back direction), respectively. That is, the pair of joining pieces 1012 of the second side plate 101 are welded separately to the vertical plate 1000 and the inclined plate 1001 of the first side plate 100, whereby the first side plate 100 and the second side plate 101 are joined. The vertical plate 1000 of the right first side plate 100 has a convex hole 1003 formed at substantially the center in the longitudinal direction (front-rear direction).

  The flange 102 is formed in a rectangular frame shape by processing a metal plate, and is joined to lower end edges of the first side plate 100 and the second side plate 101.

  The base plate 11 is formed by processing a metal plate such as a steel plate into a rectangle. However, the strength of the base plate 11 is improved by bending the four sides in the same direction (downward).

  The base plate 11 is provided with a first insertion hole 110 through which a power supply line for power supply is inserted, and a second insertion hole 111 through which a signal line through which an external control signal is transmitted is inserted. The power line inserted through the first insertion hole 110 is electrically connected to the first terminal block 16 fixed to the lower surface of the base plate 11. As for the 1st terminal block 16, the end of an electric wire is electrically connected to the connection part which is not shown in figure.

  The second terminal block 17 is also fixed to the lower surface of the base plate 11 (see FIG. 2). The second terminal block 17 is connected to a signal line inserted through the second insertion hole 111 and a signal line electrically connected to a signal input unit 700 of the functional module 7 described later. That is, a dimming signal (external control signal) transmitted from a dimmer (not shown) through a signal line is input to the signal input unit 700 of the functional module 7 through the second terminal block 17. Further, the base plate 11 is provided with a plurality of (three in the illustrated example) bolt insertion holes 112 through which suspension bolts (not shown) are inserted, arranged in a line in the left-right direction.

  The base plate 11 configured as described above is attached to the attachment piece 1002 of the frame 10. That is, each attachment piece 1002 is formed with three bridges 13 arranged at intervals in the front-rear direction, and three claws 12 respectively provided at the left and right ends of the base plate 11 are provided on each bridge 13. It is hooked separately (see FIG. 2).

  The instrument body 1 is fixed to the suspension bolt by tightening a nut to the suspension bolt inserted into the bolt insertion hole 112 of the base plate 11. The instrument body 1 is embedded and disposed with the flange 102 of the frame body 10 exposed on the lower surface side of the ceiling material and the other part inserted into the embedding hole of the ceiling material. That is, the flange 102 is provided to close and hide a gap generated between the peripheral edge of the embedding hole and the instrument body 1.

  In addition, two so-called latches 15 are attached to each attachment piece 1011 of the frame 10 at intervals in the left-right direction (see FIG. 2). The latch 15 includes a knob 150 formed in a narrow rectangular parallelepiped shape, and a support portion that rotatably supports the knob 150. The latch 15 is attached to the attachment piece 1011 by inserting a support portion into an attachment hole provided in the attachment piece 1011.

  As shown in FIG. 2, the lighting unit 2 includes a plurality (three in the illustrated example) of light source units 3, a power supply device 4, a mounting plate 5, a plurality (two in the illustrated example) of reflecting members 6, a functional module 7, and the like. Is provided.

  As shown in FIG. 5, the light source unit 3 has a substrate 31, an attachment member 32 to which the substrate 31 is attached, a cover member 33 attached to the attachment member 32 so as to cover the substrate 31, and openings at both ends of the cover member 33 are closed. Cover end 34 and the like.

  The substrate 31 is formed in a long plate shape by an insulating material (for example, ceramic). On the front surface (lower surface) of the substrate 31, a plurality of LEDs (light emitting diodes) 30 are mounted in two rows along the longitudinal direction of the substrate 31 at the center in the short direction of the substrate 31.

  Further, a conductor for electrically connecting the anode and the cathode of each LED 30 is formed outside the LED 30 in the short direction of the surface of the substrate 31. Further, a connector 311 is mounted at one end of the surface of the substrate 31 in the longitudinal direction, and the conductor is electrically connected to the connector 311. As will be described later, the relay connector 37 is electrically connected to the connector 311.

  The mounting member 32 is formed by bending a sheet metal to form a long and rectangular plate-like bottom wall portion 320 and a pair of vertically extending from both ends in the left and right direction (short direction) of the bottom wall portion 320. It is formed in a square shape having a side wall portion 321. A recess 3200 for accommodating the substrate 31 is provided in the substantially central portion of the bottom wall portion 320 over the entire length. In addition, an inclined portion 3210 that is inclined in a direction away from each other is provided at the tip of each side wall portion 321 over the entire length.

  The recess 3200 is provided with a plurality of fixing portions. These fixing portions are formed in a bowl shape by cutting and raising the bottom of the recess 3200. The substrate 31 has a plurality of holes through which the plurality of fixing portions are inserted. Each fixing portion is inserted into the hole of the substrate 31 and then bent at the front end side away from the LED 30, so that the substrate 31 is sandwiched and fixed between the bottom of the recess 3200.

  The cover member 33 protrudes upward from a substantially semi-cylindrical main portion 330 and both end portions along the longitudinal direction of the main portion 330 so as to be parallel to each other by a light-transmitting material (for example, acrylic resin). The pair of protruding wall portions 331 are integrally formed. In addition, the protrusion part 3310 which protrudes inward is integrally provided in the front-end | tip (upper end) of each protrusion wall part 331, respectively. Further, at both end portions along the longitudinal direction of the main portion 330, extending portions 332 extending to the outside of each protruding wall portion 331 are integrally formed so as to be continuous with the main portion 330. Then, the cover member 33 is attached to the lower surface side of the attachment member 32 so as to cover the surface of the substrate 31 by the protrusions 3310 of the projection wall portions 331 being hooked by the inclined portions 3210 of the attachment member 32.

  The cover end 34 is formed of a synthetic resin material into a thin semi-disc shape. The cover end 34 is attached to the longitudinal ends of the cover member 33 and the attachment member 32, and closes the openings at both ends of the cover member 33.

  Further, in order to attach the light source unit 3 to the attachment plate 5, a pair of attachment fittings 36 are fixed to the upper surface side of the attachment member 32. The mounting bracket 36 is formed by integrally forming a rectangular plate-shaped fixing piece 360 and a pair of leg pieces 361 bent downward from both longitudinal ends of the fixing piece 360 by bending a sheet metal. Become. A screw hole for screwing to the mounting plate 5 is provided in the center of the fixed piece 360. Each leg piece 361 is provided with a screw hole for screwing to the side wall portion 321 of the mounting member 32. The mounting bracket 36 is accommodated between the side wall portions 321 of the mounting member 32. The mounting bracket 36 includes a screw 362 inserted into a screw insertion hole penetrating the protruding wall portion 331 of the cover member 33 and a screw insertion hole penetrating the side wall portion 321. The mounting member 32 is screwed by being screwed into the hole.

  The mounting plate 5 is formed in a rectangular shape by a metal plate such as a steel plate. However, the strength of the mounting plate 5 is improved by bending the four sides in the same direction (downward). The three light source units 3 are fixed to the lower surface of the mounting plate 5 in a state where they are arranged in parallel with each other along the longitudinal direction so that the intervals between the adjacent light source units 3 are equal (see FIG. 2). ). That is, the mounting plate 5 is provided with a plurality of screw insertion holes, and the fixing screws 50 inserted into the screw insertion holes are screwed into the screw holes provided in the fixing piece 360 of the mounting bracket 36. The light source unit 3 is fixed to the mounting plate 5. In addition, three window holes 53 are provided in the mounting plate 5 so as to be arranged in a line at equal intervals along one side (rear side), and the relay connector 37 of each light source unit 3 is provided in each window. It is inserted through the hole 53 (see FIG. 10).

  In addition, a hook metal fitting 57 is screwed to substantially the center in the front-rear direction on the right side of the mounting plate 5. The hook metal 57 protrudes outside the mounting plate 5 and is configured to be inserted into the hole 1003 of the first side plate 100 of the instrument body 1 (see FIG. 3). That is, the lighting unit 2 is suspended and temporarily held by the instrument body 1 by hooking the tip end portion of the hook metal fitting 57 to the peripheral portion of the hole 1003 in the first side plate 100.

  Furthermore, two rectangular insertion holes 54 each having a dimension through which the knob 150 of the latch 15 can be inserted are provided at both front and rear ends of the mounting plate 5. That is, when the lighting unit 2 is accommodated in the fixture body 1 embedded in the embedded hole, the knob 150 of the latch 15 inserted into each insertion hole 54 of the mounting plate 5 is rotated by 90 degrees, thereby inserting the lighting unit 2. The knob 150 is prevented from coming off from the hole 54. Therefore, the lighting unit 2 is attached to the instrument main body 1 (the pair of attachment pieces 1011 of the frame 10) by the four latches 15. However, since the latch 15 as described above is well known in the art, illustration and description of a detailed configuration are omitted.

  The reflecting member 6 is disposed in two spaces generated between the adjacent light source units 3 (see FIGS. 2 and 3). These reflecting members 6 have a pair of reflecting plates 60 and a pair of side plates 61 extending upward from the upper end of each reflecting plate 60. The reflection plate 60 is configured by bending a rectangular metal plate. The pair of reflectors 60 are connected to each other along the longitudinal direction, and are formed in a V shape when viewed from the longitudinal direction. And the reflective member 6 is attached to the attachment plate 5 by the some insertion part 51 provided in the attachment plate 5 being inserted in the some insertion hole 610 provided in the side plate 61 (FIG. 1). And FIG. 2).

  The power supply device 4 includes a power supply circuit configured by mounting electronic components on a first printed wiring board, and a first case 42 that houses the power supply circuit. A circuit diagram of the power supply circuit is shown in FIG. The power supply circuit includes an input connector 400, a filter circuit 401, a rectifier 402, a step-up circuit 403, a step-down circuit 404, an output connector 405, a main control circuit 406, a control power supply circuit 407, a dimming control circuit 408, a turn-off control circuit 409, a control Connector 410 and the like.

  The input connector 400 is electrically connected to an external power source (commercial AC power source) 9 through the first terminal block 16. The filter circuit 401 includes a common mode choke coil 4010 and an across-the-line capacitor 4011. The rectifier 402 is configured by a diode bridge, and the external power supply 9 and the AC input terminal are electrically connected via the filter circuit 401 and the input connector 400, and full-wave rectification is performed on the AC voltage / AC current supplied from the external power supply 9. And output from the DC output terminal.

  The step-up circuit 403 is a conventionally known step-up chopper circuit (power factor correction circuit) including a choke coil L1, a switching element Q1, a rectifying element D1, a smoothing capacitor C1, and the like. The step-down circuit 404 is a conventionally known step-down chopper circuit (buck converter) that includes a switching element Q2, an inductor L2, a rectifying element D2, a resistor R1, a smoothing capacitor C2, and the like. The pulsating voltage output from the rectifier 402 is boosted by the booster circuit 403, and the DC voltage output from the booster circuit 403 is stepped down by the step-down circuit 404. The output connector 405 is a receptacle connector and is electrically connected to the output terminals (both ends of the smoothing capacitor C2) of the step-down circuit 404.

  The main control circuit 406 switches the switching element Q1 of the step-up circuit 403 and the switching element Q2 of the step-down circuit 404 to maintain the output voltage of the step-up circuit 403 constant and match the output current of the step-down circuit 404 to the target value. Configured to let The control power supply circuit 407 is configured to generate a control voltage (for example, a DC voltage of about 5V to 3V) from the output voltage of the booster circuit 403. The main control circuit 406 operates with the control voltage supplied from the control power supply circuit 407.

  The control connector 410 is a receptacle connector, and the plug connector 703 of the functional module 7 is inserted and connected. As will be described later, a control signal output from the functional module 7 is input to the dimming control circuit 408 and the turn-off control circuit 409 via the control connector 410.

  The extinguishing control circuit 409 is configured to generate an extinguishing signal for extinguishing the lighting LED 30 in accordance with the control signal and to output it to the main control circuit 406. When receiving the turn-off signal, the main control circuit 406 is configured to stop the switching of the switch element Q2, stop the step-down circuit 404, and turn off the LED 30. However, when receiving the turn-off signal, the main control circuit 406 may stop the switching of the switching element Q1 as well as the switching element Q2 and stop both the booster circuit 403 and the step-down circuit 404. If both the booster circuit 403 and the step-down circuit 404 are stopped in this way, the power consumption of the power supply device 4 during turn-off is reduced as compared with the case where only the step-down circuit 404 is stopped.

  Further, the dimming control circuit 408 is configured to generate a dimming signal instructing the light output (dimming level) of the LED 30 in accordance with the control signal and output the dimming signal to the main control circuit 406. The dimming level is expressed as a ratio (%) of the average power per unit time supplied to the LED 30 to the rated power when the light output of the LED 30 when the rated power is supplied is 100%. . For example, when the average power per unit time supplied to the LED 30 is half of the rated power, the dimming level is 50%. In other words, if the dimming level indicated by the control signal is 50%, the dimming control circuit 408 reduces the average power per unit time supplied from the step-down circuit 404 to the LED 30 to half of the rated power. A dimming signal to be instructed is generated. The main control circuit 406 is preferably configured to adjust the on-duty ratio of the switch element Q2 in accordance with the dimming signal received from the dimming control circuit 408. More specifically, the dimming control circuit 408 detects the output current of the step-down circuit 404 from the voltage across the resistor R1, and adjusts the average value of the output current to a target value corresponding to the dimming level. It is preferably configured to generate an optical signal.

  The first printed wiring board is configured by printing a wiring conductor (copper foil) on the back surface of a long rectangular flat insulating substrate. A so-called lead component such as a connector, a smoothing capacitor, or a common mode choke coil 4010 is mounted on the surface of the first printed wiring board. Then, surface-mounted components such as the rectifier 402, the main control circuit 406, the dimming control circuit 408, and the turn-off control circuit 409 are mounted on the back surface of the first printed wiring board. Here, the input connector 400 is mounted on the surface of the longitudinal end portion (hereinafter referred to as the first end portion) of the first printed wiring board. On the other hand, the output connector 405 and the control connector 410 are mounted on the surface of the other end in the longitudinal direction of the first printed wiring board (hereinafter referred to as the second end). Then, the filter circuit 401, the rectifier 402, the step-up circuit 403, the step-down circuit 404, and the output connector 405 are sequentially mounted on the first printed wiring board from the first end to the second end. The main control circuit 406, the control power supply circuit 407, the dimming control circuit 408, and the extinguishing control circuit 409 are mounted on the first printed wiring board in order from the rectifier 402 toward the second end.

  As shown in FIG. 7, the first case 42 includes a bottom plate 420, a pair of first side plates 421 </ b> A and 421 </ b> B that rises from an edge along the short direction of the bottom plate 420, and an edge along the longitudinal direction of the bottom plate 420. And a pair of second side plates 422A and 422B that rise from the top. That is, the first case 42 is formed in a long box shape in which the front of the bottom plate 420 is opened. The first case 42 includes a fixing plate 423 that protrudes outward from the tip of one second side plate 422A. The fixing plate 423 is preferably formed in a square hook shape.

  The first printed wiring board is housed in the first case 42 with the back surface facing the bottom plate 420 and the second end facing the first side plate 421A, and is cut and raised from the pair of second side plates 422A and 422B. The four cases are fixed to the first case 42. The insertion port of the input connector 400 preferably protrudes outside the first case 42 through a rectangular window hole 4210 provided in the first side plate 421B on the first end side.

  Further, the second side plate 422B on one side is provided with a protrusion 4220 at the center and one end in the longitudinal direction (see FIG. 7). These two protrusions 4220 have a three-dimensional shape obtained by dividing the sphere into quarters, and are configured to protrude outward from the surface of the second side plate 422B (in a direction away from the other second side plate 422A). It is preferable.

  The functional module 7 includes a circuit unit configured by mounting electronic components on the second printed wiring board 70, and a second case 71 that houses the circuit unit (see FIG. 1). As shown in FIG. 6, the circuit unit includes a signal input unit 700, a photocoupler 701, resistors R2 and R3, a signal output unit 702, a signal cable 703, and the like.

  The signal input unit 700 is composed of a conventionally known fast-connection terminal block, and is electrically connected to a pair of signal lines through which control signals are transmitted. The signal input unit 700 is electrically connected in series with the input terminal of the photocoupler 701 and a current limiting resistor R2. That is, the control signal transmitted to the signal line is input to the input terminal of the photocoupler 701 through the signal input unit 700.

  The signal output unit 702 is electrically connected to the control connector 410 of the power supply unit 4 via the signal cable 703. The signal cable 703 includes three electric wires 703A to 703C. Then, the ground of the power supply circuit and the output terminal (emitter of the phototransistor) on the negative side of the photocoupler 701 are electrically connected by a single electric wire 703A. Further, the connection point between the output terminal of the control power supply circuit 407 and one end of the resistor R3 is electrically connected by another one electric wire 703B. Further, the connection point between the other end of the resistor R3 and the output terminal (the collector of the phototransistor) on the positive side of the photocoupler 701 is electrically connected to the dimming control circuit 408 and the extinction control circuit 409 with the remaining one electric wire 703C. Is done. That is, a constant control power supply voltage is always applied to the series circuit of the resistor R3 and the phototransistor. Therefore, the control signal input to the dimming control circuit 408 and the extinguishing control circuit 409 is low level when the input voltage of the photocoupler 701 is high level, and high level when the input voltage of the photocoupler 701 is low level. It becomes. For example, it is assumed that a control signal (hereinafter referred to as an external control signal) input to the functional module 7 from the outside is a pulse width modulation (PWM) signal. In this case, the duty ratio (pulse width) of the control signal (hereinafter referred to as an internal control signal) output from the functional module 7 to the power supply unit 4 is 100% (the length of one cycle), and the external control signal It becomes a difference from the duty ratio (pulse width). For example, it is assumed that the dimming level when the duty ratio of the external control signal is 5% is 100%, and the duty ratio decreases as the dimming level becomes lower (darker). In this case, the dimming control circuit 408 may set the dimming level to 100% when the duty ratio of the internal control signal is 95%, and reduce the dimming level as the duty ratio decreases. The extinguishing control circuit 409 may output the extinguishing signal when the duty ratio of the internal control signal is equal to or lower than a lower limit value (for example, 10%). The functional module 7 is attached to the attachment plate 5 by screwing the second case 71.

  By the way, as shown in FIGS. 2 and 8, the power supply device 4 is attached to the upper surface side of the attachment plate 5 with the bottom plate 420 facing up. Here, the attachment structure of the power supply device 4 to the attachment plate 5 will be specifically described with reference to FIGS.

  As illustrated in FIG. 8, the lighting fixture of the present embodiment is preferably configured to attach the power supply device 4 to the attachment plate 5 by the fixture 8. The fixture 8 in the present embodiment is preferably composed of a first fixture 80 and a second fixture 81.

  The first fixture 80 includes a fixed plate portion 800, a vertical plate portion 801, and a protruding plate portion 802. The fixed plate portion 800 is formed in a long rectangular flat plate shape in which each dimension in the longitudinal direction and the short direction is larger than each dimension in the longitudinal direction and the short direction of the first case 42. In addition, it is preferable that the fixed plate portion 800 is provided with third protrusions 806 at positions near the front end at both ends in the longitudinal direction. These two third protrusions 806 preferably have a hemispherical three-dimensional shape and are configured to protrude upward from the upper surface of the fixed plate portion 800 (see FIG. 9).

  The vertical plate portion 801 has a long rectangular flat plate shape in which each dimension in the longitudinal direction and the short direction is larger than each dimension in the longitudinal direction and the short direction of the second side plate 422B of the first case 42. It is formed to stand upward from the front end of the portion 800. Further, hooking holes 803 each having a rectangular hole are provided at the center and the left end in the longitudinal direction of the vertical plate portion 801. As will be described later, two protrusions 4220 provided on the second side plate 422B of the first case 42 are inserted into the two hooking holes 803, respectively (see FIG. 8).

  The protruding plate portion 802 is a long rectangular flat plate having a longitudinal dimension larger than the longitudinal dimension of the second side plate 422B, and is formed so as to protrude rearward from the upper end of the vertical plate portion 801. Moreover, it is preferable that the protrusion part 802 is provided with the 1st protrusion part 804 in the both ends of a longitudinal direction, respectively. These two first protrusions 804 have a three-dimensional shape obtained by dividing the sphere into quarters, and are configured to protrude downward from the lower surface of the protrusion plate 802 (direction approaching the fixed plate portion 800). Is preferable (see FIG. 9). Furthermore, it is preferable that the protrusions 802 are provided with second protrusions 805 at positions closer to both ends from the center in the longitudinal direction. These two second protrusions 805 preferably have a hemispherical three-dimensional shape and are configured to protrude downward from the lower surface of the protrusion plate 802 (see FIG. 9). In addition, as for the 1st fixture 80, it is preferable that the fixed board part 800, the vertical board part 801, and the protrusion board part 802 are integrally formed by processing metal plates, such as a galvanized steel plate.

  The first fixture 80 is preferably fixed to the mounting plate 5 by fixing the fixing plate portion 800 to the back surface side. That is, it is preferable that the first fixture 80 is configured to be electrically connected to the mounting plate 5 via the fixing screw 82 (see FIG. 9).

  The second fixture 81 includes a flat plate portion 810, three leg pieces 811, two side pieces 812, and a holding portion 813. The flat plate portion 810 is formed in a rectangular flat plate shape whose longitudinal dimension is substantially equal to the longitudinal dimension of the first fixture 80. The three leg pieces 811 are provided at both ends and the center in the longitudinal direction at the rear end of the flat plate portion 810, respectively. Each leg piece 811 is preferably formed in an L shape when viewed from the longitudinal direction (left-right direction) of the flat plate portion 810. However, it is preferable that the center leg piece 811 is configured to have a width dimension (length dimension along the longitudinal direction of the flat plate portion 810) shorter than the leg pieces 811 at both ends.

  The two side pieces 812 are provided at the left and right ends of the flat plate portion 810, respectively. Each side piece 812 is preferably formed in a long flat plate shape. Each side piece 812 preferably has a hook-shaped hooking piece 8120 protruding downward from the lower end (see FIG. 10).

  The holding portion 813 is preferably a long flat plate having a longitudinal dimension equal to the longitudinal dimension of the flat plate portion 810 and is formed so as to stand upward from the front end of the flat plate portion 810. The holding portion 813 is preferably provided with a plurality (three in the illustrated example) of fourth protrusions 814 at equal intervals along the longitudinal direction. These three fourth protrusions 814 are preferably in a bridge shape and are configured to protrude forward from the holding portion 813 (in a direction away from the flat plate portion 810) (see FIGS. 8 and 9). In the second fixture 81, a flat plate portion 810, leg pieces 811, side pieces 812, holding portions 813, and fourth protrusions 814 are integrally formed by processing a metal plate such as a galvanized steel plate. Is preferred.

  Next, with reference to FIGS. 8-11, the attachment operation | work of the power supply device 4 with respect to the attachment plate 5 is demonstrated. However, the first fixture 80 is already fixed to the mounting plate 5. First, the worker attaches the first case 42 of the power supply device 4 to the first fixture 80. That is, the operator inserts the power supply device 4 from the second side plate 422B side into the space surrounded by the fixed plate portion 800, the vertical plate portion 801, and the protruding plate portion 802 with the bottom plate 420 facing upward ( (See FIG. 10). At this time, the operator inserts the two protrusions 4220 of the second side plate 422B into the two hooking holes 803 of the vertical plate portion 801, respectively, so that the power supply device 4 1 case 42) can be positioned. Further, the movement of the first case 42 along the left-right direction is restricted when the two first protrusions 804 provided on the protrusion plate 802 abut against the first side plates 421A and 421B (see FIG. 9). Further, the first case 42 is pushed downward by the two second protrusions 805 provided on the protrusion plate part 802 coming into contact with the bottom plate 420, and the lower end of the second side plate 422B is pressed against the fixed plate part 800 (see FIG. 9). As a result, the first case 42 is electrically connected to the mounting plate 5 via the first mounting tool 80.

  Subsequently, the worker electrically connects the plurality of electric wires 43 electrically connected to the output connector 405 of the power supply device 4 to the relay connectors 37 of the three light source units 3 (see FIG. 11B). The relay connector 37 is preferably constituted by a receptacle connector. Therefore, it is preferable that the plurality of electric wires 43 are configured to feed and wire the plug connectors respectively connected to the three relay connectors 37. Thus, the operator may connect the three plug connectors connected to the electric wire 43 to the three relay connectors 37, respectively.

  Here, as shown in FIG. 9, the first case 42 is pushed upward by the fixing plate 423 coming into contact with the two third protrusions 806 provided on the fixing plate portion 800 of the first fixture 80. As a result, a gap is formed between the fixed plate 423 and the fixed plate portion 800 of the first case 42. Therefore, the operator can wire the electric wire 43 so as not to be sandwiched between the first case 42 and the fixed plate portion 800 by passing the electric wire 43 through the gap.

  Subsequently, the operator attaches the second fixture 81 by screwing the central leg piece 811 with the hook pieces 8120 of the pair of side pieces 812 being inserted into the window holes 53 at the left and right ends, respectively. It fixes to the board 5 (refer FIG. 8). Each hook piece 8120 is hooked on the fixed piece 360 of the mounting bracket 36 of the light source unit 3 on the lower surface side of the mounting plate 5.

  When the second fixture 81 is fixed to the mounting plate 5, the holding portion 813 hits the fixing plate 423 of the first case 42 and restricts rearward movement of the first case 42. As a result, the first case 42 (power supply device 4) is attached to the attachment plate 5 by being held by the holding portion 813 while being inserted into a space surrounded by the fixed plate portion 800, the vertical plate portion 801, and the protruding plate portion 802. (See FIG. 1 and FIG. 8). Further, the three fourth protrusions 814 provided on the holding portion 813 are hooked on the tip (upper end) of the fixing plate 423 (see FIG. 9). As a result, the first case 42 can maintain a posture in which the fixing plate 423 is lifted by being pushed by the third protrusion 806 (see FIG. 9). That is, in the lighting fixture of the present embodiment, the mounting operation (assembly operation) of the power supply device 4 to the first case 42 is compared with the mounting structure in which the first case 42 of the power supply device 4 is screwed to the mounting plate 5. It is possible to improve the workability and shorten the assembly time. In addition, since the first case 42 does not require a space for providing the screw insertion hole, the first case 42 can be downsized as compared with the case where the screw insertion hole is provided.

  The second fixture 81 is configured to form a space for wiring between the attachment plate 5 and the flat plate portion 810 by the three leg pieces 811 and the two side pieces 812. And the electric wire 43 arrange | positioned in the said space is obscured by the flat plate part 810 from the upper direction of the attachment board 5 (refer FIG. 11A). Therefore, when the lighting unit 2 is handled at the time of construction work or the like, it is possible to suppress the occurrence of a problem that the operator's finger or the like is caught on the electric wire 43 by mistake.

  The vertical plate portion 801 and the protruding plate portion 802 of the first fixture 80 and the holding portion 813 of the second fixture 81 may be configured integrally with the fixture plate 5 by, for example, cutting and raising.

  As described above, the lighting fixture of the present embodiment includes the fixture main body 1 and the lighting unit 2 attached to the fixture main body 1. The lighting unit 2 includes one or more light source units 3, a power supply device 4 that supplies power to the light source unit 3 to light it, and the light source unit 3 is attached to the front surface (lower surface) and the power supply device 4 on the back surface (upper surface). And a mounting plate 5 to which the is mounted. The power supply device 4 includes a circuit board (printed wiring board) that constitutes a power supply circuit (a boost circuit 403 and a step-down circuit 404) for generating electric power, and a case (first case 42) that houses the circuit board. The case (first case 42) is formed in a box shape with one side open. The mounting plate 5 includes a vertical plate portion 801 that stands up from the back surface in the normal direction (vertical direction) of the back surface, a protruding plate portion 802 that protrudes from the front end of the vertical plate portion 801 so as to face the back surface, and a holding portion 813. Have The mounting plate 5 is configured such that the power supply device 4 is inserted into a space surrounded by the back surface, the vertical plate portion 801, and the protruding plate portion 802. The holding portion 813 is configured to hold the case (first case 42) by hitting the case (first case 42).

  Since the lighting apparatus of this embodiment attaches the power supply device 4 to the attachment plate 5 so as to be sandwiched between the vertical plate portion 801 and the protruding plate portion 802 and the holding portion 813, it is compared with the case where it is screwed as in the conventional example. Thus, it is possible to improve the workability of the assembling work and shorten the assembling time.

  In the lighting fixture of the present embodiment, at least one of the vertical plate portion 801 and the protruding plate portion 802 is a case from the direction (left-right direction) intersecting the facing direction (front-rear direction) of the holding portion 813 and the vertical plate portion 801. It is preferable to have a first protrusion 804 that hits the (first case 42).

  If the lighting fixture of this embodiment is comprised as mentioned above, since the movement of the said direction (left-right direction) of the case (1st case 42) is controlled by the 1st protrusion 804, the power supply device with respect to the attachment plate 5 The rattling of 4 can be suppressed.

  Furthermore, in the lighting fixture of this embodiment, it is preferable that the protruding plate portion 802 has a second protruding portion 805 protruding toward the back surface (the upper surface of the mounting plate 5). It is preferable that the 2nd protrusion part 805 is comprised so that a case (1st case 42) may be pushed toward the said back surface.

  If the lighting fixture of this embodiment is comprised as mentioned above, a case (1st case 42) can be made to contact with the attachment plate 5, and can be electrically conducted.

  Moreover, in the lighting fixture of this embodiment, it is preferable that the attachment plate 5 has the 3rd protrusion part 806 which protrudes along a normal line direction (up-down direction) from a back surface (upper surface of the attachment plate 5). The third protrusion 806 is preferably configured to push up a part (fixing plate 423) of the case (first case 42).

  If the lighting fixture of this embodiment is comprised as mentioned above, a clearance gap will be formed between a back surface (upper surface of the mounting plate 5) and a case (1st case 42). As a result, the electric wires 43 that electrically connect the power supply device 4 and the light source unit 3 are arranged in the gap, so that the electric wires 43 are not sandwiched between the case (first case 42) and the mounting plate 5. It can be wired.

  Furthermore, in the lighting fixture of the present embodiment, the power supply device 4 and the light source unit 3 are electrically connected, and the electric wire 43 serving as a power supply path from the power supply circuit of the power supply device 4 to the light source unit 3 and the concealing portion that hides the electric wire 43. (A flat plate portion 810). The hidden portion (flat plate portion 810) forms a space in which the electric wire 43 is disposed between the rear surface (the upper surface of the mounting plate 5) and covers the electric wire 43 from the normal direction (vertical direction). It is preferable.

  If the lighting fixture of this embodiment is comprised as mentioned above, generation | occurrence | production of the malfunction that an operator's finger etc. will be caught on the electric wire 43 accidentally at the time of construction work etc. can be suppressed.

DESCRIPTION OF SYMBOLS 1 Appliance main body 2 Lighting unit 3 Light source unit 4 Power supply device 5 Mounting plate 42 1st case (case)
43 Electric wire 403 Booster circuit (Power supply circuit)
404 Step-down circuit (power supply circuit)
801 Vertical plate portion 802 Projection plate portion 804 First projection portion 805 Second projection portion 806 Third projection portion 810 Flat plate portion (hidden portion)
813 Holding part

Claims (5)

An instrument body and a lighting unit attached to the instrument body,
The lighting unit includes one or more light source units, a power supply device that supplies power to the light source unit to light it, and a mounting plate that has the light source unit attached to the front surface and the power supply device attached to the rear surface. And
The power supply device includes a circuit board that constitutes a power supply circuit for generating the power, and a case that houses the circuit board, and the case is formed in a box shape with one side open,
The mounting plate includes a vertical plate portion that stands up in the normal direction of the back surface from the back surface, a protruding plate portion that protrudes from the tip of the vertical plate portion so as to face the back surface, and a holding portion, The power supply device is configured to be inserted into a space surrounded by a back surface, the vertical plate portion, and the protruding plate portion,
The said holding | maintenance part is comprised so that the said case may be hold | maintained by contacting the said case.   The at least any one of the said vertical board part and the said protrusion board part has a 1st protrusion which contacts the said case from the direction which cross | intersects the opposing direction of the said holding | maintenance part and the said vertical plate part. lighting equipment.   The said protrusion board part has a 2nd protrusion part which protrudes toward the said back surface, and the said 2nd protrusion part is comprised so that the said case may be pushed toward the said back surface, or it is characterized by the above-mentioned. 2. The lighting apparatus according to 2.   The mounting plate includes a third protrusion protruding from the back surface along the normal direction, and the third protrusion is configured to push up a part of the case. Item 4. The lighting fixture according to any one of Items 1 to 3.   The power supply device and the light source unit are electrically connected to each other and include a wire serving as a power supply path from the power supply circuit of the power supply device to the light source unit, and a concealing portion for concealing the electric wire, The illumination according to any one of claims 1 to 4, wherein a space in which the electric wire is disposed is formed between the electric wire and a back surface, and the electric wire is covered from the normal direction. Instruments.

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