JP6376495B2 - Functional module and lighting fixture - Google Patents

Description

  The present invention relates to a functional module and a lighting fixture, and more particularly to a functional module for adding a function to the lighting fixture, and a lighting fixture including the functional module.

  As a conventional example, an individual control unit (functional module) and a lighting fixture described in Patent Document 1 are illustrated. The lighting fixture described in Patent Document 1 is a line-type lighting fixture embedded in a ceiling, and has a long main body, a light source, a lighting device, and the like.

  The light source is configured by mounting a plurality of light emitting diodes (LEDs) on a mounting substrate. The lighting device includes a power supply unit, an individual control unit, a signal terminal block, a power supply terminal block, and the like. However, the lighting device is configured to be able to selectively select a configuration including the individual control unit and a configuration not including the individual control unit.

  The power supply unit has a rectangular parallelepiped case, and a signal input terminal and a power supply input terminal are arranged side by side in a short direction at one end of the case in the longitudinal direction. An external power source (for example, an AC power source having an effective value of 100 V or 200 V) is electrically connected to the power input terminal. The signal input terminal is electrically connected to the signal terminal block directly or via an individual control unit. Furthermore, an output terminal is provided at the other end in the longitudinal direction of the case. A light source is electrically connected to the output terminal. The power supply unit is configured to convert AC voltage / AC current input from the power input terminal into DC voltage / DC current and output the DC voltage / DC current from the output terminal.

  A control signal for controlling lighting of the light source directly or via an individual control unit is input to the signal terminal block from the outside of the lighting fixture. External control signals include signals from the presence sensor that monitors the presence / absence of people in the detection area, signals from the brightness sensor that monitors the brightness in the detection area, manual operations such as on / off and scenes. Including signals from wall switches, etc.

  The individual control unit receives an external control signal via the signal terminal block, and acquires address data and control command data included in the external control signal. The individual control unit further outputs a dimming signal (for example, a PWM dimming signal) based on the acquired control command data to the signal input terminal of the power supply unit when the acquired address data matches its own address data.

  The power supply unit controls the magnitude of output power and the power supply time (lighting time) based on the PWM dimming signal input to the signal input terminal, and controls the lighting state of the light source.

  As described above, in the conventional example described in Patent Document 1, the operation of the power supply unit with respect to the external control signal can be changed according to the presence or absence of the individual control unit.

JP 2014-86166 A

  By the way, the individual control unit (functional module) described in Patent Document 1 is configured such that a circuit board on which circuit components are mounted is housed in a metal case. When the case is made of metal in this way, it is difficult to reduce the size of the case because it is necessary to secure a clearance between the wiring conductor formed on the circuit board and the lead of the circuit component and the case. is there.

  On the other hand, when the case is made of a synthetic resin molding having electrical insulation, the problem of the spatial distance does not occur, but the mechanical strength is weaker than that of a metal case.

  The present invention has been made in view of the above problems, and an object thereof is to reduce the size of a case while suppressing a decrease in mechanical strength.

The functional module of the present invention is a functional module that is electrically connected to a power supply device having a light source as a load, and is configured to add a function related to control of the light source to the power supply device, A circuit board on which circuit components for realizing the function are mounted, a connection part for electrically connecting the circuit board to the power supply device, a case made of a synthetic resin molding, and housing the circuit board; A metal attachment member for attaching the case to the attachment portion, wherein the case is formed in a box shape with one surface open, and the attachment member includes a lid portion that closes the opening of the case, and the lid portion And a main body portion straddling the one surface on the opposite side to the one surface opened in the case .

  The lighting fixture of the present invention includes any one of the functional modules, a light source, a power supply device that lights the light source, and the functional module, the light source, and a fixture main body that supports the power supply device. .

  The functional module and the lighting fixture of the present invention have an effect that the case can be reduced in size while suppressing a decrease in mechanical strength.

It is a disassembled perspective view which shows embodiment of the functional module and lighting fixture which concern 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 showed the functional module same as the above and removed the attachment member. It is a top view of the 2nd printed wiring board in a functional module same as the above. It is a perspective view of the attachment member in a functional module same as the above. It is a perspective view of a functional module same as the above. It is a perspective view of the state which showed the functional module same as the above and was attached to the attachment board. It is sectional drawing of the state which showed the functional module same as the above and was attached to the attachment board.

  DESCRIPTION OF EMBODIMENTS Embodiments of a functional module and a lighting fixture according to the present invention will be described in detail with reference to the drawings. In addition, in embodiment described below, embodiment of the lighting fixture attached to a ceiling is illustrated, However, The lighting fixture of this embodiment may be a lighting fixture attached to places other than ceilings, such as a wall. . Further, in the following description, the vertical and horizontal directions are defined in the direction shown in FIG. 1 unless otherwise specified.

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

  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, a plug connector provided at the end of the output line of the power supply unit 4 is plugged into 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 screw 50 inserted into each screw insertion hole is screwed into the screw hole 3600 provided in the fixing piece 360 of the mounting bracket 36. Thus, the light source unit 3 is fixed to the mounting plate 5. The mounting plate 5 is provided with three window holes 53 arranged in a line at equal intervals along one side (rear side), and the connectors 311 of the respective light source units 3 are respectively provided in the window holes. 53 (see FIG. 1).

  The reflecting members 6 are respectively arranged in two spaces generated between the adjacent light source units 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 unit 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 704 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 unit 4 during turn-off is reduced compared to 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 FIGS. 1 and 4, the first case 42 is formed in a long box shape with a lower surface opened by a metal plate material. However, each of the pair of side plates facing the longitudinal direction of the first case 42 is provided with a through hole 420 (see FIG. 1).

  As shown in FIG. 1, the power supply unit 4 is attached to the fixed plate 8 by an appropriate method such as screwing so that the bottom plate of the first case 42 faces upward. That is, the opening of the first case 42 is closed by the fixing plate 8 in a state where the fixing plate 8 is attached.

  The fixing plate 8 is formed of a metal plate material and includes a main portion 80, a first side portion 81, a second side portion 82, a flange portion 83, and an enclosure portion 84, as shown in FIG. The main part 80 is formed in a long rectangular flat plate shape. The first side portion 81 is formed in a rectangular flat plate shape that rises upward from one end edge (front edge) along the longitudinal direction of the main portion 80. Similarly to the first side portion 81, the second side portion 82 is formed in a rectangular flat plate shape that rises upward from the other end edge (the rear side edge) along the longitudinal direction of the main portion 80. However, the second side portion 82 has a shorter vertical dimension (height dimension) than the first side portion 81. The collar portion 83 has a rectangular flat plate shape and is formed so as to protrude outward (rearward) from the upper end of the second side portion 82. The enclosure portion 84 is configured by bending a rectangular plate material into a square shape along the longitudinal direction. The enclosure portion 84 is connected to the left edge of the main portion 80. The power supply unit 4 is attached to the upper surface side of the main portion 80 of the fixed plate 8.

  As shown in FIG. 1, the fixing plate 8 configured as described above covers the window hole 53 of the mounting plate 5 with the flange 83 and the enclosure portion 84 is positioned at the left end of the mounting plate 5. The upper surface of the mounting plate 5 is fixed with screws.

  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. 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%).

  Next, the structure of the functional module 7 will be described in detail with reference to FIGS. However, in the following description, unless otherwise specified, the vertical, horizontal, and front-rear directions are defined in FIG.

  The functional module 7 of this embodiment includes a second printed wiring board 70, a second case 71, and an attachment member 72.

  As shown in FIG. 8, the second printed wiring board 70 is configured by printing a wiring conductor (copper foil) on the back surface (lower surface) of a rectangular flat plate-like insulating substrate. A signal input unit 700 and a signal output unit 702 are mounted on the surface (upper surface) of the second printed wiring board 70. Components other than the signal input unit 700 and the signal output unit 702 such as the photocoupler 701 and the resistors R2 and R3 are mounted on the back surface (lower surface) of the second printed wiring board 70. In the upper part of the signal input unit 700, four insertion holes 7000 into which signal line conductors are respectively inserted and four release buttons 7001 are arranged in the horizontal direction. That is, since the signal input unit 700 is composed of a quick-connection terminal block, it is electrically connected to the conductor of the signal line inserted into the insertion hole 7000, and when the release button 7001 is pushed, the insertion hole The signal line conductor can be pulled out from 7000.

  The signal output unit 702 is mounted on the right side of the rear end of the second printed wiring board 70. The plug connector 704 is electrically connected to the tip of the signal cable 703 drawn from the signal output unit 702. Furthermore, it is preferable that protrusions 705 that protrude forward are respectively provided at the left and right ends of the front end (the lower end in FIG. 8) of the second printed wiring board 70.

  As shown in FIG. 7, the second case 71 has a lower wall 710, a pair of side walls 711, a rear wall 712, an upper wall 713, and an inclined wall 714, and is formed in a box shape with the front surface opened. Furthermore, the second case 71 has a pair of fitting portions 715 that fit with the peripheral portion of the second printed wiring board 70. The second case 71 is preferably configured as a synthetic resin molded body made of a synthetic resin material such as polycarbonate resin.

  The fitting portion 715 includes a pair of ribs 7150 provided on each side wall 711. Each rib 7150 is formed to project outward from the pair of side walls 711 along the front-rear direction and to face each other with an interval in the vertical direction. Then, the peripheral portion of the second printed wiring board 70 is inserted between the two ribs 7150 arranged in the vertical direction. That is, the fitting portion 715 is configured to sandwich the peripheral portion of the second printed wiring board 70 along the thickness direction (vertical direction) by two ribs 7150 arranged in the vertical direction.

  A rectangular through hole 716 is formed in the second case 71 so as to straddle the upper wall 713 and the inclined wall 714. Through the through hole 716, the upper part of the signal input unit 700 (the insertion hole 7000 and the release button 7001) is exposed outside the second case 71.

  Moreover, it is preferable that the front end part of each side wall 711 of the 2nd case 71 is each provided with the coupling | bonding male part 717 mechanically couple | bonded with the coupling | bonding female part 7201 of the attachment member 72. FIG. The coupling male part 717 has a pair of support pieces 7170, a fixing part 7171, and a restriction piece 7172. The fixing portion 7171 is formed in a T shape when viewed from the left-right direction, and is formed integrally with the side wall 711. The pair of support pieces 7170 are formed so as to protrude forward from both upper and lower ends of the fixing portion 7171 and to narrow the distance between them toward the front. In addition, a triangular prism-shaped convex portion 7173 protruding outward is provided at the front end of each support piece 7170. The restricting piece 7172 projects forward from the front end of the fixed portion 7171 and is configured to restrict the movement of the pair of support pieces 7170. That is, when the pair of support pieces 7170 bend in a direction approaching each other, the amount of bending is restricted by hitting the restriction piece 7172.

  Further, the second case 71 is provided with a protrusion 718 that protrudes downward from the rear end of the lower wall 710.

  As shown in FIG. 9, the attachment member 72 has a front plate 720, an upper plate 721, a rear plate 722, an inclined plate 723, a screwing portion 724, and a fixing portion 725, and a metal plate such as a steel plate is bent. Thus, it is formed in a C shape as a whole. The front plate 720 is formed in a T shape when viewed from the front-rear direction, and a coupling female portion 7201 is provided at both left and right upper portions. Further, the front plate 720 is provided with an insertion groove 7200 through which the signal cable 703 is inserted. Note that the lower end of the insertion groove 7200 is open. The screwing portion 724 has a rectangular flat plate shape and is configured to protrude forward from the center of the lower edge of the front plate 720. A circular screw insertion hole 7240 passes through the center of the screwing portion 724.

  The upper plate 721 has a pair of projecting pieces 7210 that project downward from both left and right edges. Similarly, the inclined plate 723 has a protruding piece 7230 that protrudes downward from the right end edge. The rear plate 722 is provided with a pair of protrusions 726 that protrude forward and arranged in the left-right direction. These protrusions 726 are formed in a semi-dome shape with a flat upper surface. The fixing portion 725 is formed in a V shape and is configured to protrude downward from the center of the lower edge of the rear plate 722. Note that a rectangular through hole 727 is formed in the attachment member 72 so as to straddle the upper plate 721, the inclined plate 723, and the rear plate 722.

  As shown in FIGS. 10 and 11, the attachment member 72 is connected to the coupling female portion 7201 by the coupling male portion 717, and the pair of protrusions 726 are hooked on the rear end portion of the lower wall 710. Attached to the case 71. That is, after the pair of protrusions 726 are hooked on the rear end portion of the lower wall 710, when the attachment member 72 is rotated with the protrusion 726 as a fulcrum, the connecting female part 7201 of the front plate 720 is connected to the connecting male part 717. The support piece 7170 is bent downward by hitting the upper convex portion 7173. And if the convex part 7173 gets over the coupling | bonding knife part 7201, the support piece 7170 will reset, and the convex part 7173 will be hooked on the coupling | bonding knife part 7201, and will couple | bond (refer FIG. 11). At this time, the front plate 720 is restricted from moving in the left-right direction by the pair of coupled male portions 717. Further, the movement of the upper plate 721 and the inclined plate 723 in the left-right direction is restricted by the pair of projecting pieces 7210 and 7230. The signal cable 703 is drawn from the front of the second case 71 and is inserted into the insertion groove 7200 of the front plate 720 of the attachment member 72. That is, a part of the signal cable 703 and the plug connector 704 are pulled out of the attachment member 72 through the insertion groove 7200.

  As shown in FIGS. 11 and 12, the functional module 7 configured as described above is attached to the attachment plate 5 by an attachment member 72. The mounting plate 5 is provided with a screw hole 55 and a hooking hole 56. The screw hole 55 is provided at the left end portion of the mounting plate 5, specifically, directly below the enclosure portion 84 of the fixing plate 8. Further, the hooking hole 56 may be provided in the mounting plate 5 at a position moved to the right from the center of the screw hole 55 by a distance substantially equal to the pitch of the screw insertion hole 7240 of the mounting member 72 and the fixing portion 725. preferable. The hooking hole 56 is preferably formed in a circular shape, but may be formed in a rectangular or elliptical shape.

  Thus, as shown in FIG. 12, the fixing member 725 is hooked in the hooking hole 56 and the screwing portion 724 is screwed, so that the attachment member 72 (functional module 7) is attached to the attachment plate 5. . At this time, since the tip of the protrusion 718 provided on the lower wall 710 of the second case 71 hits the mounting plate 5, a spatial distance between the lower wall 710 of the second case 71 and the mounting plate 5 is ensured. The signal cable 703 drawn out of the attachment member 72 through the insertion groove 7200 is inserted into the insertion hole provided in the first side portion 81 of the fixing plate 8 and then into the first case 42 of the power supply unit 4. It is pulled in and connected to the control connector 410.

  As described above, in the functional module 7 of the present embodiment, the second printed wiring board 70 is accommodated in the second case 71 made of an electrical insulator (synthetic resin molding). Therefore, the functional module 7 of the present embodiment does not need to consider the spatial distance between the wiring conductor of the second printed wiring board 70 and the lead of the circuit component and the second case 71, and the second case 71 can be downsized. It is easy to plan. In the functional module 7 of the present embodiment, a metal attachment member 72 is coupled to the second case 71 and attached to the attachment plate 5 (attached portion) by the attachment member 72. For this reason, the functional module 7 of the present embodiment can suppress a decrease in mechanical strength as compared with the case where the second case 71 made of a synthetic resin material is directly attached to the attachment plate 5. Further, the second case 71 is formed in a box shape with one surface (front surface) opened, and the second printed wiring board 70 can be accommodated from the opening. Therefore, in the functional module 7 of the present embodiment, the work of housing the second printed wiring board 70 is simplified as compared with the case where the second case 71 is formed in a complete box shape having no opening. There is an advantage that. In addition, since the front opening of the second case 71 is closed by the front plate 720 of the metal mounting member 72, there is an advantage that foreign matter such as dust can be prevented from entering the second case 71.

  Here, the fixing portion 725 hooked in the hooking hole 56 is in contact with the lower surface of the mounting member 72. Neither the mounting plate 5 nor the mounting member 72 is painted, and the metal material is exposed. Therefore, the fixing member 725 comes into contact with the lower surface of the mounting member 72, so that the mounting member 72 is electrically connected to the mounting plate 5. Therefore, the functional module 7 of the present embodiment does not need to electrically connect the mounting member 72 and the mounting plate 5 with a member such as a lead wire, and can reduce the number of parts and simplify the structure.

  In the functional module 7 of this embodiment, instead of the fixing portion 725, the screwing portion 724 may be provided on the second case 71, and the second case 71 may be screwed to the mounting plate 5 at two locations. . In the functional module 7 of the present embodiment, the second case 71 is formed of a synthetic resin molded body. However, for example, even if the second case 71 is formed by resin molding of a metal box. Good.

  Next, with reference to FIGS. 1-4, the structure of the instrument main body 1 is demonstrated.

  The instrument main body 1 is formed in a rectangular box shape having an open bottom 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 joining piece 1012 of the second side plate 101 is welded to the vertical plate 1000 of the first side plate 100, so that the first side plate 100 and the second side plate 101 are joined.

  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 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 connected to the connection part which is not shown in figure. Then, the other end of the electric wire is electrically connected to the input connector 400 of the power supply unit 4. Therefore, AC power is supplied from the external power supply 9 to the power supply unit 4 via the first terminal block 16.

  A second terminal block 17 is also fixed to the lower surface of the base plate 11. 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 the signal input unit 700 of the functional module 7. 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. Then, the appliance body 1 is embedded and disposed such that the flange 102 of the frame body 10 is exposed on the lower surface side of the ceiling plate, and the other portion is inserted into the embedded hole of the ceiling plate. 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.

  On the other hand, two rectangular insertion holes 54 each having a dimension into 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 housed in the instrument 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 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 functional module 7 of the present embodiment is electrically connected to a power supply device (power supply unit 4) having a light source (LED 30) as a load, and is involved in controlling the light source (LED 30) with respect to the power supply device (power supply unit 4). Configured to add functionality. The functional module 7 of the present embodiment has a circuit board (second printed wiring) on which circuit components (signal input unit 700, photocoupler 701, signal output unit 702, resistors R2, R3, etc.) for realizing the above functions are mounted. Plate 70). In addition, the functional module 7 of the present embodiment includes a connection portion (signal cable 703 and plug connector 704) that electrically connects the circuit board (second printed wiring board 70) to the power supply device (power supply unit 4). Furthermore, the functional module 7 of the present embodiment is made of a synthetic resin molded body, and includes a case (second case 71) for housing a circuit board (second printed wiring board 70) and a case (second case 71). And a metal attachment member 72 for attachment to the portion (attachment plate 5). The case (second case 71) is formed in a box shape with one surface opened. The attachment member 72 has a lid portion (front plate 720) that closes the opening of the case (second case 71).

  The functional module 7 of the present embodiment is configured as described above, and the case (second case 71) is made of a synthetic resin molded body. Therefore, the case (second case 71) can be downsized compared to a metal case. Can be achieved. In addition, since the case (second case 71) made of the synthetic resin molded body is attached to the attachment portion (attachment plate 5) via the metal attachment member 72, a decrease in mechanical strength is suppressed. Therefore, the functional module 7 of the present embodiment can reduce the size of the case (second case 71) while suppressing a decrease in mechanical strength.

  Moreover, the lighting fixture of this embodiment is the functional module 7, the light source (LED30), the power supply device (power supply unit 4) which lights a light source (LED30), the functional module 7, the light source (LED30), and a power supply device (power supply). An instrument body 1 supporting the unit 4).

  In the functional module 7 of the present embodiment, the attachment member 72 preferably has a fixing portion 725 that is mechanically coupled to and electrically connected to the attached portion (attachment plate 5) having conductivity.

  If the functional module 7 of the present embodiment is configured as described above, it is not necessary to electrically connect the mounting member 72 and the mounting plate 5 with a member such as a lead wire, thereby reducing the number of parts and simplifying the structure. Can be achieved.

  In the functional module 7 of the present embodiment, the attachment member 72 extends from the lid (front plate 720) to the one surface (rear surface) opposite to the opened one surface (front surface) in the case (second case 71). It is preferable to have a main body (upper plate 721, rear plate 722, inclined plate 723).

  If the functional module 7 of this embodiment is comprised as mentioned above, a case (2nd case 71) can be reinforced with the attachment member 72. FIG.

  In the functional module 7 of the present embodiment, the case (second case 71) is preferably provided with one or more protrusions (projections 718) on the surface (lower surface) facing the attached portion (mounting plate 5). .

  If the functional module 7 of this embodiment is comprised as mentioned above, the space distance of a case (2nd case 71) and a to-be-attached part (attachment board 5) will be ensured easily by protrusion (projection part 718). Can do.

  In the functional module 7 of the present embodiment, the case (second case 71) preferably has a restricting portion (joining male portion 717) that restricts the movement of the lid portion (front plate 720).

  If the functional module 7 of this embodiment is comprised as mentioned above, since the movement of a cover part (front plate 720) will be controlled by the control part (joining male part 717), it will enter in a case (2nd case 71). It is possible to prevent the entry of foreign matter more reliably.

  The function module 7 may be configured to add a function other than the functions exemplified in the present embodiment, for example, an initial illuminance correction function to the power supply device (power supply unit 4). The initial illuminance correction function is dimming corresponding to the cumulative lighting time so that the light output is kept substantially constant (for example, 85% of the rating) from the start of use of the light source (LED 30) to the end of its life. This function adjusts the level.

1 Instrument body 4 Power supply unit (power supply unit)
5 Mounting plate (attached part)
7 functional module 30 LED (light source)
70 Second printed wiring board (circuit board)
71 Second Case (Case)
72 Mounting member 700 Signal input part (circuit parts)
701 Photocoupler (circuit parts)
702 Signal output unit (circuit parts)
703 Signal cable (connection part)
704 Plug connector (connection part)
717 coupling male part (regulation part)
718 Projection (projection)
720 Front plate (lid)
721 Upper plate (main part)
722 Rear plate (main part)
723 Inclined plate (main part)
725 fixed part

Claims (5)

A functional module that is electrically connected to a power source device having a light source as a load, and is configured to add a function related to control of the light source to the power source device,
A circuit board on which circuit components for realizing the function are mounted, a connection part for electrically connecting the circuit board to the power supply device, a case made of a synthetic resin molding, and housing the circuit board; A metal mounting member for mounting the case to the mounted portion;
The case is formed in a box shape with one side open,
The mounting member includes a lid portion that closes the opening of the case, and a main body portion that extends from the lid portion to one surface on the opposite side of the opened surface of the case .   The functional module according to claim 1, wherein the attachment member has a fixing portion that is mechanically coupled to and electrically connected to the attached portion having conductivity. The functional module according to claim 1 , wherein the case is provided with one or more protrusions on a surface facing the attached portion . The functional module according to claim 1 , wherein the case includes a restricting portion that restricts movement of the lid portion . 5. A lighting fixture comprising: the functional module according to claim 1; a light source; a power supply device that lights the light source; and a fixture main body that supports the functional module, the light source, and the power supply device. .

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