JP6391003B2 - Power supply device and lighting fixture - Google Patents

Description

  The present invention relates to a power supply device that is turned on by supplying power to a light source for illumination, and a lighting fixture including the power supply device.

  As a conventional example, a power supply device (lighting device and control device) and a lighting fixture described in Patent Document 1 are exemplified. The lighting fixture described in Patent Literature 1 includes a fixture main body, a lamp socket, a terminal block, a lighting device, a control device, a sensor device, and the like embedded in a ceiling surface.

  The lighting device is composed of an electronic ballast composed of an inverter circuit. The sensor device is configured to detect the presence of a person within the detection range. The control device is configured to control the lighting device (for example, dimming control) in accordance with a human presence detection result by the sensor device. These lighting device, control device, and sensor device are attached to the instrument body. Then, a power line is introduced into the instrument main body from a power supply hole provided in the instrument main body. This power line is electrically connected to the terminal block. Moreover, while a terminal block and a control apparatus are electrically connected with an electric wire, a control apparatus and a lighting device are electrically connected with an electric wire. The control device includes a case including an upper cover and a lower cover, and a circuit board is accommodated in the case. And the terminal part electrically connected with an electric wire is mounted in the end of the longitudinal direction of a circuit board. Further, the upper cover has a shorter dimension in the longitudinal direction than the lower cover, and the terminal portion is exposed outside the upper cover. Similarly, the lighting device also includes a case, and a terminal portion to which the electric wire is connected is exposed at an end portion in the longitudinal direction of the case. The sensor device is electrically connected to the control device with an electric wire. Furthermore, the lighting device is electrically connected to each lamp socket via an electric wire, and is mounted on the lamp socket by the control of the control device according to the supply state of power from the power line and the input from the sensor device. Is turned on, turned off, or dimmed while dimmed.

JP 2006-138877 A

  By the way, in the prior art example described in Patent Document 1, when the terminal portion of the lighting device is covered with a case, a hole for passing an electric wire must be provided in the case. However, in the structure in which the electric wire is passed through the hole of the case, the assembling workability may be reduced as compared with the case where the terminal portion is exposed.

  The present invention has been made in view of the above problems, and an object of the present invention is to prevent circuit components from being exposed while suppressing a decrease in assembly workability.

The power supply device of the present invention includes a power supply unit that converts electric power supplied from an external power supply into electric power suitable for a load, a functional module that is electrically connected to the power supply unit and adds a new function to the power supply unit, And an electric cable for electrically connecting the power supply unit and the functional module, and the power supply unit houses a power supply circuit configured by mounting electronic components on a first printed wiring board, and the power supply circuit The functional module includes a circuit unit configured by mounting an electronic component for realizing the function on a second printed wiring board; and the first module housing the circuit unit. A second case disposed adjacent to the case, wherein the first case is formed in a box shape having a plurality of side walls, and is adjacent to the second case among the plurality of side walls. Side walls are formed lower than the other side walls not adjacent to the second case, and the electric cable passes over the side walls formed lower than the other side walls to connect the power supply circuit and the circuit unit. The electrical cable further includes a first plug connector electrically connected to one end, and a second plug connector electrically connected to the other end, the first plug connector A first receptacle connector electrically connected to the first printed wiring board is mounted on the first printed wiring board; a second receptacle connector electrically connected to the second plug connector is mounted on the second printed wiring board; The first receptacle connector and the second receptacle connector are located at positions that do not oppose each other in the direction in which the first case and the second case are adjacent to each other. It is characterized by Rukoto.

  The lighting fixture of this invention is equipped with the said power supply device, the light source used as the said load of the said power supply device, and the fixture main body holding the said light source at least.

  The power supply device and the lighting fixture of the present invention have an effect that it is possible to prevent the circuit components from being exposed while suppressing a decrease in assembly workability.

It is a disassembled perspective view which shows embodiment of the lighting fixture which concerns on this invention. It is sectional drawing of a lighting fixture same as the above. It is a circuit diagram which shows embodiment of the power supply device which concerns on this invention. It is a top view of a power supply device same as the above. It is a top view of the power supply unit same as the above. It is a perspective view of the functional module in this embodiment. It is a disassembled perspective view of a functional module same as the above. It is a top view of the 2nd printed wiring board in the same as the above. It is the perspective view seen from the front of the functional module same as the above. It is sectional drawing of the 2nd case of a functional module same as the above. It is a perspective view which shows the principal part of a power supply device same as the above. It is a perspective view which shows a power supply device same as the above.

  Embodiments of a power supply device 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. . In the following description, unless otherwise specified, the vertical and horizontal directions are defined in the orientation shown in FIG. 2, and the direction perpendicular to the paper surface in FIG. 2 is defined as the front-rear direction (the front side is the front side).

  The lighting fixture A of this embodiment is comprised by the light source unit 2 and the fixture main body 1 as shown in FIG.1 and FIG.2. The instrument body 1 is fixed to the suspension bolt 200 and attached directly to the ceiling 100. The light source unit 2 is detachably attached to the instrument body 1.

  The instrument body 1 is formed into a flat box shape that is long and has an upper surface (a surface facing the ceiling 100) opened by bending the sheet metal. In addition, the instrument body 1 is provided with a rectangular recess 11 for accommodating the light source unit 2 on the opposite side (lower side) to the ceiling 100 over the entire length in the longitudinal direction (front-rear direction). In addition, on both sides of the recess 11 in the left-right direction (width direction) of the instrument body 1, inclined portions 12 that extend from the opening edge of the recess 11 and tilt upward are provided respectively.

  In addition, the bottom plate 111 of the recess 11 is provided with a hole 111 </ b> A for allowing the power line 30 to pass through substantially in the center in the front-back direction (longitudinal direction). Further, the bottom plate 111 is provided with holes 111B for passing the suspension bolts 200 at positions near both ends in the front-rear direction. A terminal block 25 is attached to the lower surface of the bottom plate 111. The terminal block 25 is electrically connected to the power line 30. In addition, three electric wires 250 including a ground wire are drawn out from the terminal block 25. Further, a plug connector 251 is electrically connected to the tips of these three electric wires 250.

  As shown in FIGS. 1 and 2, the light source unit 2 includes a plurality of (for example, two) LED modules 22, a mounting member 21, a cover 23, a power supply unit 4, and a functional module 5.

  The LED module 22 includes a mounting substrate 221 formed in a rectangular plate shape that is long in the front-rear direction. A plurality of LEDs (light emitting diodes) 222 are mounted on the lower surface of the mounting substrate 221 along the front-rear direction (longitudinal direction) and in two rows. In addition, a connector for electrically connecting the power supply unit 4 to the front end portion of one LED module 22 is mounted. An output line 43 of the power supply unit 4 described later is electrically connected to this connector.

  Each LED module 22 is mounted with a power supply connector 224 at the end facing the adjacent LED module 22 (see FIG. 2). Then, the lighting power is relayed from one LED module 22 to the other LED module 22 by electrically connecting the connectors 224 of both LED modules 22 to each other.

  The mounting member 21 is formed in a U shape by bending a sheet metal, and is a long and rectangular bottom plate 211, and a vertical direction (bottom plate) from both ends in the left-right direction (width direction) of the bottom plate 211. And a pair of side plates 212 extending in a direction orthogonal to the second plate 211. At the front end (upper end) of each side plate 212, as shown in FIG. 2, inclined portions 212A that are inclined in directions away from each other (outward) are provided over the entire length.

  A hole for passing the output line 43 of the power supply unit 4 is provided in the front end portion of the bottom plate 211. In addition, a rectangular recess formed by projecting a part of the bottom plate 211 upward is provided at the center of the bottom plate 211 in the front-rear direction. This recess is provided in order to secure an insulation distance between the connector 224 and the bottom plate 211 of the mounting member 21 in a state where both the LED modules 22 are mounted on the mounting member 21. In addition, the LED module 22 mentioned above is fixed to the attachment member 21 by the nail | claw formed, for example by cutting and raising a part of the bottom plate 211 of the attachment member 21. FIG.

  Further, the attachment member 21 has a pair of hooks 214 extending to one end in the width direction at positions near both ends in the longitudinal direction, and a pair of hook springs 215 arranged on the other end in the width direction. .

  The cover 23 is formed in a long box shape whose upper surface (surface on the mounting member 21 side) is opened by a diffusible material (for example, milky white acrylic resin). In addition, the cover 23 has a curved surface portion 231 having a convex lens shape such that the protruding amount increases downward from the both ends to the center in the left-right direction (width direction) (see FIG. 2).

  As shown in FIG. 2, extending portions 232 that overlap the opening edge of the recess 11 of the instrument body 1 in the vertical direction with the light source unit 2 attached to the instrument body 1 as shown in FIG. Are provided. Further, projecting wall portions 233 projecting upward (on the attachment member 21 side) are provided on the inner sides of the extending portions 232 in the left-right direction of the cover 23, respectively, and the tip ends of the respective projecting wall portions 233. Each has a protrusion 233A protruding inward. In addition, support pieces 233B that protrude inwardly protrude near the bases of the respective protruding wall portions 233.

  The power supply unit 4 includes a power supply circuit configured by mounting electronic components on a first printed wiring board 40 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 includes a receptacle connector, and a plug connector 251 that is electrically connected to the electric wire 250 drawn from the terminal block 25 is plugged in. 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 an AC power supply and an AC input terminal are electrically connected via the filter circuit 401 and the input connector 400, and full-wave rectifies the AC voltage / AC current supplied from the AC power supply 3. 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 504 of the functional module 5 is inserted and connected. As will be described later, a control signal output from the functional module 5 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 module 22 in accordance with the control signal and to output it to the main control circuit 406. When the main control circuit 406 receives the turn-off signal, the main control circuit 406 stops the switching of the switch element Q2, stops the step-down circuit 404, and turns off the LED module 22. 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 module 22 according to the control signal and output the dimming signal to the main control circuit 406. The dimming level is the ratio (%) of the average power per unit time supplied to the LED module 22 to the rated power when the light output of the LED module 22 when the rated power is supplied is 100%. It is represented by For example, when the average power per unit time supplied to the LED module 22 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 module 22 to half of the rated power. A dimming signal is generated that instructs 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.

  As shown in FIG. 4, the first printed wiring board 40 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 40. Then, surface mounted components such as a rectifier 402, a main control circuit 406, a dimming control circuit 408, and a light extinguishing control circuit 409 are mounted on the back surface of the first printed wiring board 40. 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 40. On the other hand, the output connector 405 and the control connector 410 are mounted on the surface of the other end portion in the longitudinal direction of the first printed wiring board 40 (hereinafter referred to as the second end portion). The filter circuit 401, the rectifier 402, the booster circuit 403, the step-down circuit 404, and the output connector 405 are sequentially mounted on the first printed wiring board 40 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 40 in order from the rectifier 402 toward the second end. Since the rectifier 402 is mounted on the back surface of the first printed wiring board 40, it is not shown in FIG. Yes.

  As shown in FIGS. 4 and 5, the first case 42 includes a bottom plate 420, a pair of first side plates 421 </ b> A and 421 </ b> B that rise from an edge along the short direction of the bottom plate 420, and a longitudinal direction of the bottom plate 420. And a pair of second side plates 422A and 422B rising from the edges. 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 formed in a square shape as shown in FIG.

  The first printed wiring board 40 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 from the pair of second side plates 422A and 422B. It is fixed to the first case 42 by four raised nails 4220. The insertion port of the input connector 400 projects out of the first case 42 through a rectangular window hole provided in the first side plate 421B on the first end side.

  As shown in FIG. 2, the power supply unit 4 is attached to the attachment member 21 of the light source unit 2 so that the bottom plate 420 of the first case 42 faces upward. Specifically, the first case 42 is fixed to the mounting member 21 by screwing the second side plate 422 </ b> B and the fixing plate 423 to each side plate 212 of the mounting member 21. Further, the opening of the first case 42 is closed by the bottom plate 211 of the attachment member 21 in a state where the attachment is made to the attachment member 21. At this time, the output connector 405 and the control connector 410 are covered with the first case 42 and the bottom plate 211 of the attachment member 21 and are not exposed to the outside of the first case 42.

  The functional module 5 includes a circuit unit configured by mounting electronic components on the second printed wiring board 50, and a second case 51 that houses the circuit unit. A circuit diagram of the circuit section is shown in FIG. This circuit unit includes a signal input unit 500, a photocoupler 501, resistors R2 and R3, a signal output unit 502, a signal cable 503, and the like.

  The signal input unit 500 is configured by 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 500 is electrically connected in series with the input terminal of the photocoupler 501 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 501 through the signal input unit 500.

  The signal output unit 502 is electrically connected to the control connector 410 of the power supply unit 4 via the signal cable 503. The signal cable 503 includes three electric wires 503A to 503C. The ground of the power supply circuit and the output terminal (emitter of the phototransistor) on the negative electrode side of the photocoupler 501 are electrically connected by a single electric wire 503A. 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 the other electric wire 503B. Further, the connection point between the other end of the resistor R3 and the output terminal (collector of the phototransistor) on the positive side of the photocoupler 501 is electrically connected to the dimming control circuit 408 and the turn-off control circuit 409 with the remaining electric wire 503C. 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 501 is high level, and high level when the input voltage of the photocoupler 501 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 5 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 5 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 5 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.

  As shown in FIG. 8, the second printed wiring board 50 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 500 and a signal output unit 502 are mounted on the surface (upper surface) of the second printed wiring board 50. Components other than the signal input unit 500 and the signal output unit 502 such as the photocoupler 501 and the resistors R2 and R3 are mounted on the back surface (lower surface) of the second printed wiring board 50. Here, the signal input unit 500 is mounted on the left side of the rear end (the upper end in FIG. 8) of the second printed wiring board 50. In the upper part of the signal input unit 500, four insertion holes 5000 into which signal line conductors are respectively inserted and four release buttons 5001 are arranged in the left-right direction. That is, since the signal input unit 500 is composed of a fast connection type terminal block, it is electrically connected to the conductor of the signal line inserted into the insertion hole 5000, and when the release button 5001 is pushed, the insertion hole The signal line conductor can be extracted from 5000.

  The signal output unit 502 is mounted on the right side of the rear end of the second printed wiring board 50. The plug connector 504 is electrically connected to the tip of the signal cable 503 drawn from the signal output unit 502. Furthermore, it is preferable that protrusions 505 that protrude forward are provided at the left and right ends of the front end (lower end in FIG. 8) of the second printed wiring board 50.

  As shown in FIGS. 6 and 7, the second case 51 has a lower wall 52, a pair of side walls 53, a rear wall 54, an upper wall 55, and an inclined wall 56, and is formed in a box shape whose front surface is open. The Further, the second case 51 holds a pair of fitting portions 530 that fit with the peripheral portion of the second printed wiring board 50 and holds the fitting state between the second printed wiring board 50 and each fitting portion 530. Part 531. The second case 51 is preferably configured as a synthetic resin molded body made of a synthetic resin material such as polycarbonate resin.

  As shown in FIG. 7, the fitting portion 530 includes a pair of ribs 5300 provided on each side wall 53. Each rib 5300 is formed so as to project outward from the pair of side walls 53 along the front-rear direction and to face each other with an interval in the vertical direction. And as shown in FIG. 9, the peripheral part of the 2nd printed wiring board 50 is inserted between the two ribs 5300 lined up and down. That is, the fitting portion 530 is configured to sandwich the peripheral portion of the second printed wiring board 50 along the thickness direction (vertical direction) by two ribs 5300 arranged in the vertical direction. However, the interval between the ribs 5300 is larger than the thickness of the second printed wiring board 50.

  As shown in FIGS. 7, 9, and 10, the holding portion 531 is provided so as to protrude downward from the lower surface on the rear side of the upper rib 5300. The holding part 531 is preferably formed in a shape in which a triangular pyramid is connected to the front end of the triangular prism. Thus, the provision of the holding portion 531 narrows the gap on the rear end side of the fitting portion 530 (the interval between the pair of ribs 5300). Therefore, the rear peripheral edge portion of the second printed wiring board 50 is press-fitted between the holding portion 531 and the lower rib 5300, and the second printed wiring board 50 is difficult to come off from the fitting portion 530. That is, the holding portion 531 is configured to hold (maintain) the fitting state between the fitting portion 530 and the second printed wiring board 50. Since the front end of the holding portion 531 is formed in a triangular pyramid shape, the rear end of the second printed wiring board 50 is caught by the front end of the holding portion 531 when the peripheral portion of the second printed wiring board 50 is inserted. hard. Further, as shown in FIG. 10, the front end portion of each rib 5300 is inclined so as to gradually widen the mutual distance toward the front (rightward in FIG. 10). For this reason, the peripheral portion of the second printed wiring board 50 is guided to the front end portion of the rib 5300 and smoothly inserted into the groove between the ribs 5300.

  A rectangular through hole 550 is formed in the second case 51 so as to straddle the upper wall 55 and the inclined wall 56. Through this through hole 550, the upper part of the signal input unit 500 (the insertion hole 5000 and the release button 5001) is exposed outside the second case 51 (see FIG. 6).

  Moreover, it is preferable that the front end part of each side wall 53 of the 2nd case 51 is each provided with the coupling | bonding male part 57 mechanically couple | bonded with the 1st case 42 of the power supply unit 4, as shown in FIG. As shown in FIG. 7, the coupling male part 57 includes a pair of support pieces 570, a fixing part 571, and a restriction piece 572. The fixing portion 571 is formed in a T shape when viewed from the left-right direction, and is formed integrally with the side wall 53. The pair of support pieces 570 are formed so as to protrude forward from both upper and lower ends of the fixing portion 571 and to narrow the distance between them toward the front. In addition, a triangular prism-shaped convex portion 5700 protruding outward is provided at the front end of each support piece 570. The restriction piece 572 protrudes forward from the front end of the fixed portion 571 and is configured to restrict the movement of the pair of support pieces 570. That is, when the pair of support pieces 570 bend in a direction approaching each other, the amount of bending is restricted by hitting the restriction piece 572.

  Here, the second case 51 is preferably configured such that the distance between the two coupling male portions 57 in the left-right direction is smaller than the width dimension of the second printed wiring board 50 in the left-right direction. Since the second case 51 is configured as described above, it is possible to reduce the size in the left-right direction. In this case, the second case 51 is configured to leave a gap X between the second printed wiring board 50 and the second printed wiring board 50 at a position overlapping the coupling male portion 57 in the thickness direction (vertical direction) of the second printed wiring board 50. Preferably, see FIG. Specifically, it is preferable that a step 532 is provided in a portion of the side wall 53 between the fitting portion 530 and the coupling male portion 57. As described above, if the gap X is formed between the side wall 53 of the second case 51 and the second printed wiring board 50, the back of the second printed wiring board 50 corresponding to the gap X is Low components can be mounted and wiring conductors can be formed.

  The pair of coupled male portions 57 are mechanically coupled to a pair of coupled female portions 424 provided in the first case 42 of the power supply unit 4. As shown in FIG. 5, the pair of coupling knife portions 424 are preferably formed in a flat plate shape that is opposed to the first side plate 421 </ b> A with a slight gap therebetween and through which a rectangular hole 4240 passes. However, each coupling knife part 424 is connected with the edge of 2nd side plate 422A, 422B. Further, the first side plate 421A is provided with a rectangular hole 4211 that faces the hole 4240 of the coupling knife portion 424.

  Thus, when the support pieces 570 are inserted into the holes 4240 of the respective coupling female portions 424, the support pieces 570 are pushed inward by the upper and lower edges of the holes 4240, and the convex portions 5700 are bent into the holes 4240. Go over the edge and get caught by the connecting knife 424. As a result, the coupling female part 424 of the first case 42 and the coupling male part 57 of the second case 51 are coupled, and the second case 51 is attached to the first case 42. However, the distal end portion of the coupling male portion 57 enters the first case 42 through the hole 4211.

  Further, the second case 51 is preferably provided with a hooking portion 520 at the front end portion of the lower wall 52. As shown in FIG. 7, the hook portion 520 is formed in a J shape when viewed from the left-right direction. As shown in FIG. 4, the hook portion 520 is hooked on the tip of the first side plate 421 </ b> A of the first case 42.

  The second case 51 is preferably provided with a cable holding portion 521 at the front end portion of the lower wall 52. As shown in FIG. 9, the cable holding portion 521 includes a column portion 5210 that protrudes downward from the lower surface of the lower wall 52, and a beam portion that protrudes substantially parallel to the lower surface of the lower wall 52 from the tip (lower end) of the column portion 5210. 5211, and is formed in an L shape when viewed from the front-rear direction. Further, a triangular columnar protrusion (barb) 5212 protruding toward the lower wall 52 is provided at the tip of the beam portion 5211. That is, as shown in FIG. 4, the cable holding portion 521 holds the output line 43 through the space between the lower wall 52 and the beam portion 5211, and holds the output line 43 from the space by the protrusion 5212. To do.

  Further, the second case 51 is provided with a protrusion 522 that protrudes downward from the rear end portion of the lower wall 52. In addition, it is preferable that the front-end | tip (lower end) part of the protrusion 522 is formed in a hemispherical shape.

  Next, the assembly procedure of the power supply device will be described. The power supply device according to this embodiment includes a power supply unit 4 and a functional module 5.

  First, the operator electrically connects one end of the output line 43 to the output connector 405 of the power supply unit 4, and then inserts and holds the output line 43 in the holding groove 4212 provided in the first side plate 421A. (See FIGS. 5 and 11). Further, the worker holds the output line 43 on the cable holding portion 521 of the second case 51 of the functional module 5. Subsequently, the operator plugs and connects the plug connector 504 of the functional module 5 to the control connector 410 of the power supply unit 4. Further, the operator hooks the hook portion 520 on the tip of the first side plate 421A of the first case 42, and then inserts the support piece 570 of the coupling male portion 57 into the hole 4240 of the coupling female portion 424, The part 57 is coupled with the coupling female part 424. The functional module 5 is attached to the power supply unit 4 by the above procedure, and the assembly of a power supply device is completed.

  Here, the first side plate 421A adjacent to the second case 51 of the functional module 5 is, as shown in FIG. 5, the first side plate 421B and the second side plates 422A and 422B which are not adjacent to the second case 51. Is formed lower. That is, a part 4213 of the first side plate 421 </ b> A is formed into a hemming bent shape by folding and bending, thereby reducing the height. However, it is preferable that the end portion 4214 of the first side plate 421A, on which the hook portion 520 of the second case 51 is hooked, is formed at substantially the same height as the other first side plates 421B and the second side plates 422A, 422B (FIG. 5). And FIG. 11).

  Thus, when the functional module 5 is attached to the power supply unit 4, a gap is generated between the first side plate 421 </ b> A of the first case 42 and the lower wall 52 of the second case 51. The signal cable 503 of the functional module 5 passes over the first side plate 421A from the gap and is electrically and mechanically connected to the control connector 410 of the power supply unit 4.

  Here, the length of the signal cable 503 is as short as possible as long as unnecessary tension is not applied to the control connector 410 and the signal output unit 502 in a state where the functional module 5 is attached to the power supply unit 4. preferable. Therefore, if the signal cable 503 is inserted into a hole penetrating the first side plate 421A, like the output line 43, the length dimension can be shortened. However, since the movement range of the signal cable 503 is restricted by the hole after being inserted through the hole, it is very difficult to connect the signal cable 503 and the control connector 410.

  On the other hand, the power supply device of the present embodiment is configured such that the signal cable 503 is connected to the control connector 410 of the power supply unit 4 over the first side plate 421A formed relatively low. Therefore, since the movement range of the signal cable 503 is difficult to be regulated, it is easy to connect the signal cable 503 and the control connector 410 even if the signal cable 503 is short. That is, the power supply device according to the present embodiment can prevent the circuit components such as the output connector 405 and the control connector 410 from being exposed while suppressing a decrease in assembly workability between the power supply unit 4 and the functional module 5.

  Next, the assembly procedure of the light source unit 2 will be described. The operator attaches the power supply device assembled in the above-described procedure to the upper surface side of the attachment member 21, and further fixes the LED module 22 to the lower surface of the bottom plate 211 of the attachment member 21 (see FIG. 12). At this time, since the tip of the protrusion 522 provided on the lower wall 52 of the second case 51 hits the bottom plate 211 of the mounting member 21, a gap is formed between the lower wall 52 and the bottom plate 211 of the second case 51. The output line 43 is wired in this gap. Subsequently, the operator inserts the output line 43 of the power supply unit 4 into the hole provided in the bottom plate 211 of the mounting member 21, and connects the plug connector provided at the tip of the output line 43 to the end of the LED module 22. Plug in and connect to the connector (receptacle connector).

  Finally, the operator attaches the cover 23 to the mounting member 21 with the opening side facing upward. At this time, the protrusions 233 A provided on the respective protruding wall portions 233 of the cover 23 are hooked on the inclined portions 212 A of the side plates 212 of the attachment member 21, and the cover 23 is attached to the attachment member 21. The light source unit 2 is assembled by the procedure as described above.

  Next, the construction procedure of the lighting fixture A of this embodiment is demonstrated. First, the installer inserts the power line 30 and the signal line previously wired on the back of the ceiling into the hole 111A of the instrument body 1, and further passes the suspension bolt 200 exposed to the indoor side through the hole 111B. The nut 300 is screwed into the fixture body 1 to fix the instrument body 1. Thereafter, the installer connects the power line 30 to the terminal block 25, and further plugs and connects the plug connector 251 of the terminal block 25 to the input connector 400 of the power supply unit 4. Subsequently, the installer connects the signal line to the signal input unit 500 of the functional module 5.

  Finally, the installer hooks the tips of the hooks 214 into the pair of insertion holes 112 </ b> A provided on one side plate 112 of the instrument body 1, and then attaches the pair of hook springs 215 to the other side plate of the instrument body 1. Hook on a hook 1120 provided at 112. Then, when the installer rotates the light source unit 2 with the hook metal 214 as a fulcrum, the hook spring 215 returns to the original state while being hooked on the hook portion 1120, so that the light source is generated by the spring force of the hook spring 215. The unit 2 is held by the instrument body 1. The lighting fixture A is constructed on the ceiling by the procedure as described above.

  As described above, the power supply device of the present embodiment includes the power supply unit 4 that converts the power supplied from the external power supply (AC power supply 3) into power suitable for the load (LED module 22). In addition, the power supply device is electrically connected to the power supply unit 4, a function module 5 that adds a new function to the power supply unit 4, and an electric cable (signal cable 503) that electrically connects the power supply unit 4 and the function module 5. ). The power supply unit 4 includes a power supply circuit configured by mounting electronic components on a first printed wiring board 40 and a first case 42 that houses the power supply circuit. The functional module 5 is disposed so that an electronic component for realizing the function is mounted on the second printed wiring board 50 and the circuit unit is accommodated to be adjacent to the first case 42. And a second case 51. The first case 42 is formed in a box shape having a plurality of side walls (first side plates 421A and 421B, second side plates 422A and 422B). The first case 42 is formed such that the side wall (first side plate 421 </ b> A) adjacent to the second case 51 among the plurality of side walls is lower than the other side walls not adjacent to the second case 51. . The electric cable (signal cable 503) is configured to get over the side wall (first side plate 421A) formed lower than the other side walls and to electrically connect the power supply circuit and the circuit unit.

  The power supply device according to the present embodiment is configured as described above, and the work of electrically connecting the power supply circuit and the circuit unit using an electric cable (signal cable 503) can be easily performed. It is possible to prevent the circuit components from being exposed while suppressing.

  In the power supply device according to the present embodiment, the second case 51 is preferably configured such that a surface of the first case 42 facing the side wall (first side plate 421A) is opened.

  Furthermore, in the power supply device of the present embodiment, the electrical cable (signal cable 503) is electrically connected to the first plug connector 504 at one end and electrically connected to the second plug connector (signal output unit 502) at the other end. It is preferable to be connected to. A first receptacle connector (control connector 410) that is electrically connected to the first plug connector 504 is preferably mounted on the first printed wiring board 40. In addition, it is preferable that a second receptacle connector (signal output unit 502) that is electrically connected to the second plug connector is mounted on the second printed wiring board 50. The first receptacle connector (control connector 410) and the second receptacle connector (signal output unit 502) are preferably mounted at positions that do not face each other in the direction in which the first case 42 and the second case 51 are adjacent to each other. . For example, as shown in FIG. 11, the control connector 410 is disposed so as to be shifted to one end side in the short direction of the first printed wiring board 40, and the signal output unit 502 is disposed on the short side of the second printed wiring board 50. It is preferable that the other end side in the hand direction is arranged to be shifted.

  If the power supply device of the present embodiment is configured as described above, the control connector 410 and the signal output unit 502 are mounted at positions that do not face each other in the direction in which the first case 42 and the second case 51 are adjacent to each other. Compared to the case, the assembly workability can be improved. That is, the distance between the control connector 410 and the signal output unit 502 is relatively long, and the total length of the signal cable 503 can be increased. Therefore, when the plug connector 504 is connected to the control connector 410, the signal cable 503 is easily bent, and the work of connecting the plug connector 504 to the control connector 410 is easy to perform.

  Furthermore, in the power supply device of this embodiment, at least one of the first receptacle connector (control connector 410) and the second receptacle connector (signal output unit 502) is mounted at a position away from a predetermined portion. Is preferred. However, the predetermined portion refers to a portion (second end) of the first printed wiring board 40 that is close to the second printed wiring board 50, and the first printed wiring board 40 of the second printed wiring board 50. It is the part that is approaching. For example, as shown in FIG. 11, the signal output unit 502 is preferably mounted at the rear end of the second printed wiring board 50, that is, at a position away from the first printed wiring board 40.

  If the power supply device of the present embodiment is configured as described above, the distance between the control connector 410 and the signal output unit 502 is further increased, so that the work of connecting the plug connector 504 to the control connector 410 becomes easier. .

  Here, as shown in FIG. 11, since the cable holding unit 521 is disposed near the signal output unit 502, the movement of the signal cable 503 is regulated by the output line 43 held by the cable holding unit 521. . As a result, when the second case 51 is attached to the first case 42, it is difficult for the signal cable 503 to be accidentally sandwiched between the second case 51 and the first case 42.

  Further, in the power supply device of the present embodiment, the first printed wiring board 40 and the second printed wiring board 50 are housed in the first case 42 and the second case 51 so that the surfaces thereof are opposite to each other. It is preferred that However, the surface of the first printed wiring board 40 is a mounting surface on which the first receptacle connector (control connector 410) is mounted. The surface of the second printed wiring board 50 is a mounting surface on which the second receptacle connector (signal output unit 502) is mounted. The second printed wiring board 50 includes one or more protrusions 505 that protrude toward the first case 42 from an end surface facing the side wall (first side plate 421A) of the first case 42. Is preferred. For example, as shown in FIG. 11, the first printed wiring board 40 is housed in the first case 42 with the surface facing the front side, and the second printed wiring board 50 has the surface facing the back side. The second case 51 is preferably housed in the second case 51.

  If the power supply device of the present embodiment is configured as described above, the signal output unit 502 is mounted on the surface of the second printed wiring board 50 together with the signal input unit 500, so that the second case 51 can be downsized. . In addition, since the protrusion 505 secures a gap through which the signal cable 503 can be passed between the second printed wiring board 50 and the first side plate 421A, the operation of connecting the plug connector 504 to the control connector 410 is performed. Workability does not decrease.

  By the way, in the power supply device of the present embodiment, the second case 51 may be provided with a wall on the surface (front surface) of the first case 42 facing the side wall (first side plate 421A). The electric cable (signal cable 503) may be configured to go over the wall (first side plate 421A) and electrically connect the power supply circuit and the circuit unit. For example, the second case 51 may be formed in a box shape in which the lower surface is opened by eliminating the lower wall 52 and providing a wall on the front surface.

  In addition, although the lighting fixture A of this embodiment is comprised by the light source unit 2 provided with a light source (LED module 22), a power supply device, and the fixture main body 1, for example, even if a power supply device is attached to the fixture main body 1. FIG. I do not care.

  The function module 5 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 corresponds 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 module 22) to the end of its life. This function adjusts the light control level.

1 Instrument body 2 Light source unit 3 AC power supply (external power supply)
4 Power supply unit 5 Function module 22 LED module (load, light source)
40 1st printed wiring board 42 1st case 50 2nd printed wiring board 51 2nd case 410 Control connector (1st receptacle connector)
421A, 421B First side plate (side wall)
422A, 422B Second side plate (side wall)
502 signal output section (second plug connector, second receptacle connector)
503 Signal cable (electric cable)
504 First plug connector 505 Projection

Claims (6)

A power supply unit that converts power supplied from an external power supply into power suitable for a load, a function module that is electrically connected to the power supply unit and adds a new function to the power supply unit, the power supply unit, and the function An electric cable for electrically connecting the modules, and the power supply unit has a power supply circuit configured by mounting electronic components on a first printed wiring board and a first case for housing the power supply circuit. And
The functional module is disposed so that an electronic component for realizing the function is mounted on a second printed wiring board and the circuit unit is accommodated to be adjacent to the first case. A second case,
The first case is formed in a box shape having a plurality of side walls, and the side walls adjacent to the second case among the plurality of side walls are formed lower than the other side walls not adjacent to the second case. And
The electric cable is configured to electrically connect the power supply circuit and the circuit unit over the side wall formed lower than the other side wall ,
The electrical cable further has a first plug connector electrically connected to one end and a second plug connector electrically connected to the other end,
A first receptacle connector electrically connected to the first plug connector is mounted on the first printed wiring board, and a second receptacle connector electrically connected to the second plug connector is the second printed wiring board. Implemented in
Wherein the first receptacle connector and the second receptacle connector in the first case and the second direction which the case is adjacent switching control in accordance with Rukoto mounted at a position not facing each other.   The power supply device according to claim 1, wherein the second case is configured such that a surface of the first case facing the side wall is opened.   The second case has a wall provided on a surface facing the side wall of the first case, and the electric cable is configured to cross the wall and electrically connect the power supply circuit and the circuit unit. The power supply apparatus according to claim 1, wherein: At least one of the first receptacle connector and the second receptacle connector is mounted at a position away from a portion where the first printed wiring board and the second printed wiring board are close to each other. The power supply device according to claim 1. In the first printed wiring board and the second printed wiring board, the mounting surface on which the first receptacle connector is mounted and the mounting surface on which the second receptacle connector is mounted are opposite to each other. Stored in the first case and the second case,
Said second printed circuit board, according to claim, characterized in that from the end face facing the side wall of the first casing, having from 1 to 2 or more projections projecting toward the first casing 1 to 4 The power supply device according to any one of the above. An illumination fixture comprising: the power supply device according to any one of claims 1 to 5, a light source serving as the load of the power supply device, and a fixture main body that holds at least the light source.

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