JP6653447B2 - Light source unit and lighting equipment - Google Patents

Description

  The present invention relates to a light source unit and a lighting fixture, and more particularly, to a light source unit including a light source and a power supply device, and a lighting fixture including the light source unit.

  As a conventional example of the light source unit, a light source unit described in Patent Document 1 is exemplified. The light source unit described in Patent Literature 1 includes a substrate on which an LED (light emitting diode) is mounted, a mounting member to which the substrate is mounted, a cover member, and a power supply device. The power supply device converts AC power supplied from the AC power supply into DC power, and supplies the converted DC power to the LED. The attachment member is formed in a long rectangular plate shape by a metal plate. The board on which the LEDs are mounted is mounted on the first surface of the mounting member. The mounting member has a caulking portion that presses and fixes the substrate to the bottom surface side. The caulking portion is provided along the long side of the substrate. Then, in the caulking portion, the portion opposite to the short side of the substrate is bent (caulked) to the LED side, whereby the substrate is fixed to the mounting member.

  The cover member is formed in a box shape from a translucent synthetic resin material, and is attached to the attachment member so as to cover the surface of the substrate on which the LEDs are mounted and the first surface of the attachment member. Further, the power supply device is mounted on the second surface (the back surface of the first surface) of the mounting member. The power supply device is electrically connected to a connector mounted on the board via an electric wire. The LED emits light (lights up) when DC power is supplied from a power supply device through an electric wire and a connector and a printed wiring formed on a substrate. The attachment member has an insertion hole through which the electric wire is inserted. Further, the lighting fixture described in Patent Literature 1 includes a light source unit and a fixture main body to which the light source unit is detachably attached.

JP 2014-112490 A

  By the way, in the manufacturing process of the light source unit described in Patent Document 1, an electric wire for electrically connecting the power supply device and the connector of the board must be inserted into the insertion hole of the mounting member. Therefore, the configuration of the light source unit described in Patent Document 1 is insufficient to simplify the manufacturing process.

  An object of the present invention is to provide a light source unit and a lighting fixture that can simplify a manufacturing process.

  A light source unit according to one embodiment of the present invention includes a light source unit, a power supply device including a power supply circuit that supplies power to the light source unit, an attachment member to which the light source unit and the power supply device are attached, the power supply circuit, A connection member for electrically connecting the light source unit. The light source unit is provided on the substrate and one or more solid-state light sources, a substrate on which the one or more solid-state light sources are disposed, and the one or more solid-state light sources are electrically connected. And a plurality of input terminal sections. The power supply circuit has a printed wiring board. The printed wiring board has a plurality of output terminals for outputting the power generated by the power supply circuit. The mounting member is formed in a plate shape, the light source unit is mounted on a first surface, and the power supply device is mounted on a second surface which is a back surface of the first surface, and And a plurality of hooks protruding from one surface. The bottom plate is provided with a hole penetrating from the first surface to the second surface. Each of the plurality of output terminal portions is disposed at a position overlapping the hole when viewed from the thickness direction of the mounting member. Each of the plurality of input terminal portions is disposed at a position overlapping the hole when viewed from the thickness direction of the mounting member. The connection member has a plurality of rod-shaped conductors, a plurality of first terminal members, and a plurality of second terminal members. Each of the plurality of first terminal members has a plate material having conductivity and having an insertion hole penetrating in the thickness direction. The plate is electrically connected to one of the plurality of input terminals. Each of the plurality of first terminal members electrically and mechanically connects a first end of a corresponding one of the plurality of conductors to a corresponding one of the plurality of input terminal portions. It is configured to be connected to. Each of the plurality of second terminal members electrically and mechanically connects a second end of the corresponding conductor with the corresponding output terminal of the plurality of output terminals through the hole. Is configured. The plurality of hooks are arranged so as to be spaced from each other along a first direction that is a longitudinal direction of the bottom plate and the substrate. The substrate has a plurality of grooves into which the corresponding hooks of the plurality of hooks are inserted. Each of the plurality of grooves has a length along the first direction larger than a length of the hooks along the first direction, and is arranged at intervals along the first direction. It is formed as follows. Further, at least one groove of the plurality of grooves may be defined as a difference between a length of the one groove along the first direction and a length of the hook along the first direction under the following conditions. It is configured to meet. The condition is that the conductor is smaller than a movable distance along the first direction in a state where the conductor is electrically connected to the first terminal member and the second terminal member.

  A lighting fixture according to one embodiment of the present invention includes a light source unit and a fixture main body that supports the light source unit.

  The light source unit and the lighting fixture of the present invention have an effect that the manufacturing process can be simplified.

FIG. 1 is an exploded perspective view of a light source unit and a lighting device according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of the lighting device. FIG. 3 is a circuit diagram of a power supply device of the light source unit according to the first embodiment. FIG. 4 is a plan view of the power supply device. FIG. 5 is an exploded perspective view of a part including a connection member of the light source unit. FIG. 6A is a front view of a first terminal member of the above light source unit. FIG. 6B is a top view of the first terminal member. FIG. 6C is a rear view of the first terminal member. FIG. 6D is a right side view of the first terminal member. FIG. 7 is an exploded perspective view of a second terminal member and a holder of the above light source unit. FIG. 8 is a cross-sectional view of a part including a connection member of the light source unit. FIG. 9 is a partially omitted perspective view including the LED module of the light source unit, an attachment member, and a connection member. FIG. 10 is a perspective view of a main part of a substrate and a mounting member of the above light source unit.

  A light source unit and a lighting device according to an embodiment of the present invention will be described in detail with reference to the drawings. In addition, although the lighting fixture of the embodiment described below exemplifies a lighting fixture attached to a ceiling, the lighting fixture of the embodiment may be a lighting fixture attached to a place other than the ceiling such as a wall. In the following description, unless otherwise noted, the directions shown in FIG. 1 define the up, down, left, right, front and back directions of the light source unit and the lighting fixture. Note that the configurations described in the following embodiments are merely examples of the present invention. The present invention is not limited to the following embodiments, and various changes can be made according to the design and the like without departing from the technical idea according to the present invention.

  The lighting fixture 1 of the present embodiment includes a light source unit 2 and a fixture main body 10 as shown in FIGS. The apparatus main body 10 is fixed to a suspension bolt 200 and is directly attached to the ceiling 100. The light source unit 2 is detachably attached to the instrument body 10.

  The apparatus main body 10 is formed in a flat box shape having a long surface and an open upper surface (a surface facing the ceiling 100) by bending a sheet metal. The fixture body 10 has a rectangular recess 11 for housing the light source unit 2 on the opposite side (lower side) of the ceiling 100 over the entire length of the fixture body 10 in the longitudinal direction (left-right direction). Inclined portions 12 are provided on both sides of the concave portion 11 in the short direction (front-back direction) of the instrument body 10. The inclined portion 12 extends from the opening edge of the concave portion 11 in the short direction (front-back direction) of the instrument body 10 and is inclined upward and outward.

  In the bottom plate 111 of the concave portion 11, a hole 111A for passing the power line 30 is provided substantially at the center in the longitudinal direction (left-right direction). Further, the bottom plate 111 is provided with holes 111B for passing the suspension bolts 200 at positions near both ends in the longitudinal direction (left-right direction). Then, the terminal block 25 is attached to the lower surface of the bottom plate 111. Terminal block 25 is electrically connected to power supply line 30. Three electric wires 250 including a ground wire are drawn from the terminal block 25. Further, a plug connector 251 is electrically connected to tips of these three electric wires 250.

  The light source unit 2 includes a light source part A1, a mounting member 21, a cover 23, a power supply device 4, a connection member 5, and the like, as shown in FIGS. The light source unit A1 preferably includes a plurality of (for example, two) LED modules 22.

  The plurality of LED modules 22 are arranged side by side in the longitudinal direction (left-right direction). Each LED module 22 has a substrate 221 formed in a rectangular plate shape that is long in the longitudinal direction (left-right direction). The substrate 221 has a plurality of LEDs (light-emitting diodes) 220 mounted (arranged) on its surface (lower surface) along the longitudinal direction (left-right direction) and in a line. Any one of the plurality of LED modules 22 is provided with two input terminal portions 222 that are electrically connected to the connection member 5 (see FIG. 5).

  A pair of connectors 224 for power supply are mounted at ends of each LED module 22 facing the adjacent LED module 22 (see FIG. 2). Then, by electrically connecting the pair of connectors 224 of both LED modules 22 adjacent to each other, the lighting power is relayed from one LED module 22 to the other LED module 22.

  The mounting member 21 is formed into a U-shape by bending a sheet metal, and extends upward from both ends in the short direction (front-back direction) of the bottom plate 211 formed in a long rectangular plate shape. A pair of side plates 212 are provided. As shown in FIG. 2, a pair of inclined portions 212 </ b> A that incline in directions away from each other (outward) are respectively provided over the entire lengths at the tips (upper ends) of the pair of side plates 212. The above-described LED module 22 is fixed to the mounting member 21 by a plurality of hooks 216 formed by cutting and raising a part of the bottom plate 211 of the mounting member 21 (see FIG. 5). Each of the plurality of hooks 216 has a trunk 2160 projecting downward from the lower surface of the bottom plate 211, and an arm 2161 projecting from the left end surface of the trunk 2160 in parallel with the lower surface of the bottom plate 211 (FIG. 5). The plurality of hooks 216 are arranged on both sides of the bottom plate 211 in the short-side direction (front-back direction) so as to be spaced at intervals along the longitudinal direction (left-right direction) of the bottom plate 211. The substrate 221 has a plurality of grooves 2211 into which the hooks 216 corresponding one-to-one among the plurality of hooks 216 are inserted (see FIG. 5). Each of the plurality of groove portions 2211 has a length along the longitudinal direction (left-right direction) of the substrate 221 larger than a length along the longitudinal direction of the hook portion 216 (the trunk portion 2160), and also has a length in the longitudinal direction. They are formed so as to be spaced at intervals. In other words, the substrate 221 is fixed to the mounting member 21 by inserting the substrate 221 between the bottom plate 211 and the arm 2161 of the hook 216 inserted into the corresponding groove 2211 of the plurality of grooves 2211 (FIG. 9).

  The mounting member 21 includes a pair of hooks 214 extending toward one end in the short direction (front-back direction) at positions near both ends in the longitudinal direction (left-right direction), and a pair of hook springs disposed on the other end in the width direction. 215 (see FIG. 1).

  The cover 23 is formed of a light-diffusing material (for example, milky white acrylic resin) in the shape of a long box whose upper surface (the surface on the mounting member 21 side) is open. The cover 23 has a curved surface portion 231 in the shape of a convex lens such that the amount of projection from the both ends toward the center in the front-rear direction (width direction) increases toward the center (see FIG. 2).

  As shown in FIG. 2, extending portions 232 vertically overlapping the opening edge of the concave portion 11 of the instrument body 10 with the light source unit 2 attached to the instrument body 10 at both ends in the front-rear direction of the cover 23. Are provided respectively. Inside the extending portion 232 in the short direction (front-back direction) of the cover 23, a projecting wall portion 233 projecting upward (toward the mounting member 21) is provided over the entire length. At the tip of each protruding wall portion 233, a protruding portion 233A protruding inward is provided. Near the base of each protruding wall portion 233, a support piece 233B protrudes inward.

  The power supply device 4 includes a power supply circuit 49 configured by mounting electronic components on the printed wiring board 40, and a case 42 that houses the power supply circuit 49. FIG. 3 shows a circuit diagram of the power supply circuit 49. The power supply circuit 49 includes a power supply input section 400, a filter circuit 401, a rectifier section 402, a booster circuit 403, a step-down circuit 404, an output terminal section 405, a main control circuit 406, a control power supply circuit 407, a dimming control circuit 408, and a light-off control circuit. 409, a signal input unit 410, and the like.

  The power input unit 400 is composed of a receptacle connector, and a plug connector 251 (see FIG. 1) that is electrically connected to the electric wire 250 drawn from the terminal block 25 is inserted and connected. 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. The rectifying unit 402 performs full-wave rectification on an AC voltage (AC current) input from the AC power supply 3 via the filter circuit 401 and the power input unit 400, and outputs a pulsating voltage (pulsating current) from a DC output terminal. .

  The booster circuit 403 is a conventionally known booster chopper circuit (power factor improvement circuit) including a choke coil L1, a switching element Q1, a rectifying element D1, a smoothing capacitor C1, and the like. The booster circuit 403 converts the pulsating voltage output from the rectifying unit 402 into a DC voltage (for example, a DC voltage of 400 [V]) higher than the peak value of the pulsating voltage.

  The step-down circuit 404 is a conventionally known step-down chopper circuit (buck converter) including a switching element Q2, an inductor L2, a rectifying element D2, a resistor R1, a smoothing capacitor C2, and the like. The step-down circuit 404 steps down the DC voltage (first DC voltage) output from the step-up circuit 403 to a DC voltage (second DC voltage) suitable for the LED module 22 as a load. The output terminal section 405 includes two lands formed on (the upper surface of) the printed wiring board 40, and is electrically connected to the output terminals of the step-down circuit 404 (both ends of the smoothing capacitor C2).

  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 keep the output voltage of the step-up circuit 403 constant and to match the output current of the step-down circuit 404 with the target value. It is configured to be. The control power supply circuit 407 is configured to generate a control voltage (for example, a DC voltage of about 15 [V] to 3 [V]) from the output voltage of the booster circuit 403. The main control circuit 406 operates with a control voltage supplied from the control power supply circuit 407.

  The signal input unit 410 includes a receptacle connector, and a control signal transmitted via a signal line is input to the dimming control circuit 408 and the light-off control circuit 409 via the signal input unit 410.

  The light-off control circuit 409 is configured to generate a light-off signal for turning off the LED module 22 being turned on in response to the control signal, and output the signal to the main control circuit 406. When receiving the light-off signal, the main control circuit 406 stops the switching of the switching element Q2, stops the step-down circuit 404, and turns off the LED module 22.

  The dimming control circuit 408 is configured to generate a dimming signal according to the control signal and output the generated dimming signal to the main control circuit 406. The dimming signal is a signal for instructing the light output (dimming level) of the LED module 22. The dimming level is a 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 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 the rated power. Is generated. The main control circuit 406 is preferably configured to adjust the duty ratio of the switching element Q2 according to 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 match the target value corresponding to the dimming level. Preferably, it is configured to generate an optical signal.

  As shown in FIG. 4, the printed wiring board 40 is configured by printing a conductor (copper foil) for wiring on the back surface of a long rectangular flat insulating substrate. On the surface (lower surface) of the printed wiring board 40, so-called lead components such as a connector, a smoothing capacitor, and a common mode choke coil 4010 are mounted. Then, surface mounting components such as the rectifying unit 402, the main control circuit 406, the dimming control circuit 408, and the light-off control circuit 409 are mounted on the back surface (upper surface) of the printed wiring board 40. Here, the power input unit 400 is mounted on the surface of the end of the printed wiring board 40 in the longitudinal direction (lateral direction). On the other hand, the signal input unit 410 is mounted on the surface of the other end of the printed wiring board 40 in the longitudinal direction (left-right direction).

  As illustrated in FIGS. 2 and 4, the case 42 includes a bottom plate 420, a pair of first side plates 421 </ b> A and 421 </ b> B rising from an edge along the short direction of the bottom plate 420, and an end along the longitudinal direction of the bottom plate 420. It has a pair of second side plates 422A and 422B rising from the edge. That is, the case 42 is formed in a long box shape whose surface (lower surface) facing the bottom plate 420 is open. The case 42 includes a fixing plate 423 that protrudes outward from the tip of the second side plate 422A, which is one of the pair of second side plates 422A and 422B. The fixing plate 423 is formed in a square gutter shape as shown in FIG.

  The printed wiring board 40 is housed in the case 42 with the back surface facing the bottom plate 420, and is fixed to the case 42 with four claws 4220 cut and raised from the pair of second side plates 422A and 422B (see FIG. 4). . The insertion port of the power input unit 400 projects out of the case 42 through a rectangular window provided in the first side plate 421B.

  The power supply device 4 is mounted on the upper surface (second surface) of the mounting member 21 of the light source unit 2 so that the bottom plate 420 of the case 42 faces upward, as shown in FIG. Specifically, the case 42 is fixed to the mounting member 21 by screwing the second side plate 422B and the fixing plate 423 to the pair of side plates 212 of the mounting member 21, respectively. When attached to the mounting member 21, the opening of the case 42 is closed by the bottom plate 211 of the mounting member 21.

  As shown in FIG. 5, the connection member 5 includes two conductors 50, two first terminal members 51, and two second terminal members 52. It is preferable that each of the two conductors 50 is formed in a thin rod shape (for example, a columnar shape) by a metal such as copper or a copper alloy. The length of each of these two conductors 50 is preferably about several tens [mm].

  The two first terminal members 51 are formed in the same shape and the same size. Therefore, only one first terminal member 51 will be described below. As shown in FIGS. 6A to 6D, the first terminal member 51 has a plate member 510 made of a rectangular plate-shaped metal plate. The plate member 510 is preferably formed in a square gutter shape by bending and raising both ends along the longitudinal direction X1 in the same direction along the thickness direction X3. As shown in FIG. 6A, the first terminal member 51 has an insertion hole 511 that passes through the center of the plate member 510 (the center in the longitudinal direction X1 and the lateral direction X2). The first terminal member 51 preferably includes a plurality (for example, three) of support pieces 512 and a plurality (for example, three) of guide pieces 513. Each of the three support pieces 512 is formed integrally with the plate 510 by cutting and raising the plate 510 into a pentagonal shape. The tip portions 5120 of these three support pieces 512 face the insertion holes 511, respectively. Further, the three support pieces 512 are arranged at equal intervals so as to surround the insertion hole 511 (see FIG. 6A). Each of the three guide pieces 513 is formed integrally with the plate member 510 by cutting and raising the plate member 510 into a trapezoidal shape. The tips of these three guide pieces 513 face the insertion holes 511, respectively. Further, the three guide pieces 513 are arranged one by one between the three support pieces 512 so as to surround the insertion hole 511 (see FIG. 6A). Each of the three support pieces 512 and the three guide pieces 513 is configured to be inclined in a direction away from the plate 510 along the thickness direction X3 of the plate 510 as approaching the insertion hole 511. 6B and 6D).

  Each of these two first terminal members 51 is electrically connected to each of the two input terminal portions 222 provided on the substrate 221 in a one-to-one correspondence. Each of the two input terminal portions 222 is formed of a land formed on the surface (lower surface) of the substrate 221 and around a through hole 2210 penetrating the substrate 221 in the thickness direction (vertical direction) (see FIG. 5). ). Each of the two input terminal portions 222 is electrically connected to the plurality of LEDs 220 via a conductor formed on the surface (lower surface) of the substrate 221. It is preferable that the plate material 510 of each of the two first terminal members 51 is soldered to each of the two input terminal portions 222. Each of the two first terminal members 51 is electrically connected to each of the two input terminal portions 222 in a state where three support pieces 512 and three guide pieces 513 are inserted into the respective through holes 2210 of the two input terminal portions 222. (See FIG. 8).

  The two second terminal members 52 are formed in the same shape and the same size. Therefore, only one second terminal member 52 will be described below. However, in the following description, in FIG. 7, the up, down, left, right, front and rear directions of the second terminal member 52 are defined.

  As shown in FIG. 7, the second terminal member 52 includes a first spring piece 520A, a second spring piece 520B, a first main piece 521A, a second main piece 521B, a connection piece 522, a bending piece 523, a terminal piece 524, It has three hooks 525. The first main piece 521A and the second main piece 521B are each formed in a rectangular plate shape. The connection piece 522 is formed in a rectangular plate shape. The connection piece 522 is connected to the first main piece 521A and the second main piece 521B at both ends in the front-rear direction. That is, the first main piece 521A and the second main piece 521B are mechanically connected via the connection piece 522 so as to face in the front-rear direction. The first spring piece 520A is formed in a rectangular plate shape, and protrudes downward from the lower end of the first main piece 521A. The first spring piece 520A is curved in a U-shape when viewed from the left-right direction. The second spring piece 520B is formed in a rectangular plate shape, and protrudes downward from the lower end of the second main piece 521B. The second spring piece 520B is curved in a U-shape when viewed from the left and right directions. That is, the first spring piece 520A and the second spring piece 520B are formed so that the distance between them is reduced toward the tip. The flexible piece 523 is formed in a narrow rectangular plate shape. The flexure piece 523 protrudes from the upper end of the second main piece 521B in a direction approaching the first main piece 521A in the front-rear direction. The terminal piece 524 is formed in an elongated rectangular plate shape. The terminal piece 524 protrudes upward from the tip of the bending piece 523. The three hooking claws 525 are provided at the center of the first main piece 521A, the second main piece 521B, and the connection piece 522, respectively. Each of the three hooks 525 is cut and raised so that the upper end faces outward. The first spring piece 520A, the second spring piece 520B, the first main piece 521A, the second main piece 521B, the connection piece 522, the bending piece 523, the terminal piece 524, and the three hooking claws 525 are made of metal such as copper or copper alloy. It is preferable that the plate is processed to be integrally formed.

  These two second terminal members 52 are electrically connected to the two output terminal portions 405 provided on the printed wiring board 40 of the power supply device 4 in a one-to-one correspondence. Each of the two output terminal portions 405 includes lands formed on the back surface (upper surface) of the printed wiring board 40 and around two through holes 43 penetrating the printed wiring board 40 in the thickness direction (vertical direction). (See FIG. 8). The terminal pieces 524 of the two second terminal members 52 are respectively inserted into the through holes 43 of the output terminal portions 405 corresponding one-to-one among the two output terminal portions 405. Then, the terminal pieces 524 of the two second terminal members 52 are each soldered to the output terminal portion 405 on the back surface of the printed wiring board 40. Thus, each of the two second terminal members 52 is electrically connected to each of the two output terminal portions 405 provided on the printed wiring board 40 of the power supply device 4 in a one-to-one correspondence.

  Here, it is preferable that each of the two second terminal members 52 be held by a holder 53 having electrical insulation. As shown in FIG. 7, the holder 53 is formed of a rectangular parallelepiped synthetic resin molded body. The holder 53 electrically insulates and mechanically holds the two second terminal members 52. The holder 53 has two accommodation sections 530 (see FIG. 7). Each of the two housing portions 530 houses a second terminal member 52 corresponding to one of the two second terminal members 52 (see FIG. 8). The upper surfaces of the two housing portions 530 are open. Then, the terminal pieces 524 of the two second terminal members 52 project from the openings on the upper surface of the holder 53 (see FIG. 8). The holder 53 has two insertion ports 531 (see FIGS. 5 and 8). Each of the two insertion ports 531 is opened on the lower surface of the holder 53. Each of the two insertion ports 531 is connected to a corresponding storage part 530 of the two storage parts 530 (see FIG. 8). It is preferable that the inner side surfaces of the two insertion ports 531 are inclined surfaces that are inclined toward the housing portion 530. Each of the two second terminal members 52 is prevented from falling out of the housing 530 by hooking the respective tips of the three hooking claws 525 to the inner wall surface of the housing 530 (see FIG. 8). However, in the second terminal member 52 accommodated in the corresponding accommodating portion 530, a part (lower end portion) of the first spring piece 520A and the second spring piece 520B has advanced into the corresponding insertion port 531. (See FIG. 8).

  Incidentally, the holder 53 preferably has a pair of fixing portions 532 as shown in FIG. The pair of fixing portions 532 are formed in a column shape, and protrude upward from both left and right ends on the upper surface of the holder 53. The pair of fixing portions 532 are press-fitted one by one into each of the two fixing holes 44 provided in the printed wiring board 40. That is, the holder 53 is fixed to the printed wiring board 40 by pressing the pair of fixing portions 532 into the two fixing holes 44 of the printed wiring board 40 (see FIG. 8).

  Next, the procedure for assembling the light source unit 2 will be described. However, each of the two first terminal members 51 is soldered (electrically connected) to a corresponding one of the two input terminal portions 222 of the substrate 221. Similarly, each of the two second terminal members 52 is soldered (electrically connected) to a corresponding one of the two output terminal portions 405 of the printed wiring board 40. Further, holders 53 respectively holding the two second terminal members 52 are mechanically fixed to the printed wiring board 40.

  First, the worker performing the assembly work attaches the power supply device 4 to the second surface (upper surface) of the mounting member 21 so that the opening surface (lower surface) of the case 42 is closed by the bottom plate 211 of the mounting member 21. At this time, the operator inserts the tip (lower end) of the holder 53 into the hole 213 provided in the bottom plate 211 (see FIGS. 5 and 8). That is, the hole 213 is closed and closed by the case 42 of the power supply device 4 on the second surface (upper surface) side of the bottom plate 211 (see FIGS. 2 and 8). Therefore, the light source unit 2 of the present embodiment can prevent foreign substances such as insects and dust from entering the first surface side of the bottom plate 211 through the holes 213 from the second surface side of the bottom plate 211.

  Subsequently, the worker fixes the LED module 22 to the first surface (lower surface) of the bottom plate 211 of the mounting member 21. At this time, each of the two first terminal members 51 attached to the substrate 221 of the LED module 22 corresponds to one of the two insertion ports 531 of the holder 53 when viewed from the thickness direction (vertical direction) of the substrate 221. (See FIG. 8). That is, the hole 213 is closed by the substrate 221 of the LED module 22 on the first surface (lower surface) side of the bottom plate 211 (see FIG. 8). Therefore, the light source unit 2 of the present embodiment does not require a member for closing the hole 213 (for example, a tape having an adhesive applied to one side), and the cost can be reduced by reducing the number of parts and the number of manufacturing steps. it can.

  Then, the worker inserts each of the two conductors 50 into the insertion hole 511 of the corresponding first terminal member 51 of the two first terminal members 51. At this time, the upper end portion (second end portion 501) of the conductor 50 is inserted into the insertion hole 511 by the lower surfaces (inclined surfaces) of the three support pieces 512 and the three guide pieces 513 arranged so as to surround the insertion hole 511. Will be guided to. Therefore, the operator can easily insert the conductor 50 into the insertion hole 511. However, each of the three support pieces 512 bends (resiliently deforms) in a direction (upward) in which the conductor 50 is inserted when the tip portion 5120 contacts the conductor 50.

  The operator inserts the conductor 50 into the insertion hole 511 until the lower end of the conductor 50 is substantially flush with the lower surface of the plate member 510. At this time, the upper ends (second ends 501) of the two conductors 50 pass through the insertion port 531 of the holder 53, and the first spring pieces 520A and the second spring pieces 520A of the second terminal members 52 corresponding one-to-one. It is inserted between the spring pieces 520B. That is, each of the two conductors 50 is electrically connected to the corresponding one of the second terminal members 52 by the second end portion 501 being sandwiched between the first spring piece 520A and the second spring piece 520B in the front-rear direction. Connected (see FIG. 8). Each of the two conductors 50 is electrically connected to the corresponding one of the first terminal members 51 by sandwiching the first end portion 500 between the three support pieces 512 (see FIG. 8). As a result, each of the two input terminal portions 222 of the LED module 22 and the corresponding output terminal portion 405 of the two output terminal portions 405 of the power supply device 4 (power supply circuit 49) are electrically connected by the connection member 5. Connected (see FIG. 8).

  Finally, the worker assembles the cover 23 to the mounting member 21 with the opening side of the mounting member 21 facing upward. At this time, the pair of projections 233A provided on the pair of projecting wall portions 233 of the cover 23 are hooked on the pair of inclined portions 212A of the pair of 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 according to the above procedure.

  Here, in the light source unit described in Patent Literature 1, an electric wire that electrically connects the power supply device and the connector of the LED module is inserted into the insertion hole of the mounting member. Therefore, in the light source unit described in Patent Literature 1, it is difficult to simplify the assembly process (manufacturing process) of the light source unit.

  On the other hand, as described above, the light source unit 2 of the present embodiment is different from the power supply device 4 and the LED module in that only the two conductors 50 are inserted into the insertion holes 511 of the corresponding first terminal members 51, respectively. It is configured to complete the electrical connection operation with the P.22. Therefore, in the light source unit 2 of the present embodiment, the manufacturing process (of the light source unit 2) can be simplified as compared with a conventional example such as the light source unit described in Patent Document 1.

  Further, in the light source unit 2 of the present embodiment, each of the two first terminal members 51 has three support pieces 512 provided on the plate member 510. Each of these three support pieces 512 is formed integrally with the plate member 510 so as to surround the insertion hole 511. Each of the three support pieces 512 is elastically deformed by being pushed by (the first end 500 of) the conductor 50 inserted into the insertion hole 511. Furthermore, each of the three support pieces 512 is electrically connected to the conductor 50 at a tip end portion 5120 pressed by the first end 500 of the conductor 50. That is, in the light source unit 2 of the present embodiment, even if the conductor 50 is inclined with respect to the insertion hole 511 of the plate member 510, the elastic force of the plurality of (for example, three) support pieces 512 causes the support piece 512 Each tip 5120 can be in contact with the conductor 50. As a result, in the light source unit 2 of the present embodiment, the allowable range of the positional deviation between the two first terminal members 51 and the two second terminal members 52 corresponding to each other one-to-one can be expanded. Moreover, the stress applied to the solder joining the respective plate members 510 of the two first terminal members 51 and each of the two input terminal portions 222 is hardly affected by the inclination of the conductor 50. Therefore, as compared with the case where the first terminal member 51 and the conductor 50 are fixed by soldering or the like, cracks are formed in the solder joining the (first plate member 510) of the first terminal member 51 and the input terminal portion 222. Hard to occur.

  By the way, the substrate 221 of the LED module 22 expands due to heat radiated from the lit LED 220 and heat radiated from the power supply device 4 while supplying power to the LED module 22. The linear expansion coefficient of the synthetic resin (for example, epoxy resin) forming the substrate 221 is several tens of times larger than the linear expansion coefficient of the metal (for example, zinc steel plate or stainless steel plate) forming the mounting member 21. More than double. Each of the plurality of grooves 2211 provided on the substrate 221 is configured such that the length of the substrate 221 along the longitudinal direction is larger than the body 2160 of the hook portion 216. That is, the substrate 221 is movable in the longitudinal direction with respect to the mounting member 21 by the difference between the length of the groove portion 2211 and the length of the hook portion 216 (the body portion 2160) of the substrate 221 along the longitudinal direction. Therefore, even if the amount of thermal expansion of the substrate 221 is larger than the amount of thermal expansion of the mounting member 21, the substrate 221 moves in the longitudinal direction with respect to the mounting member 21, so that the substrate 221 (from the hook portion 216 of the mounting member 21) moves. Can be reduced.

  However, when the substrate 221 moves in the longitudinal direction with respect to the mounting member 21, the first terminal member 51 fixed to the substrate 221 and the second terminal indirectly fixed to the mounting member 21 via the case 42. The relative position of the member 52 shifts. As described above, even if the positions of the two first terminal members 51 and the two second terminal members 52 corresponding to each other are shifted to some extent, the connection member 5 is electrically connected via the conductor 50. Can be maintained. However, if the amount of movement of the substrate 221 with respect to the mounting member 21 exceeds the allowable range of the positional deviation between the first terminal member 51 and the second terminal member 52 in the connection member 5, the electrical connection via the conductor 50 is performed. May not be maintained. For example, a position where the center of the insertion hole 511 of the first terminal member 51 in the vertical direction and the center of the first spring piece 520A and the second spring piece 520B of the second terminal member 52 in the left-right direction overlap (see FIG. 8). ) Is set to ± 1.6 [mm]. In this case, if the amount of movement of the substrate 221 with respect to the mounting member 21 is suppressed to ± 1.6 [mm], preferably ± 1.4 [mm] or less, the connection between the LED module 22 and the power supply circuit 49 by the connecting member 5 is possible. Electrical connection is maintained.

  When the light source unit 2 is turned off, the trunk portion 2160 of the hook portion 216 is in contact with a side surface of one end (first end) of the groove portion 2211 of the substrate 221 in the longitudinal direction. The distance between the other end (second end) and the side surface is Y1 (see FIG. 10). At this time, the body 2160 along the longitudinal direction of the mounting member 21 is set so that the distance Y1 is equal to or less than the absolute value of the allowable range of the displacement (for example, 1.6 [mm] or 1.4 [mm]). And the length of the groove 2211 along the longitudinal direction of the substrate 221 are designed. However, the expansion amount of the substrate 221 is not always uniform. Therefore, it is preferable that the distance Y1 is determined by a distance from the reference line along the longitudinal direction, with the virtual center line α (see the dashed line in FIG. 9) passing through the center in the longitudinal direction of the substrate 221 as the reference line. Here, the distance from the reference line (center line α) to the first end of the groove 2211 is Y11, and the distance from the reference line (center line α) to the first end of the groove 2211 is Y12 (see FIG. 9). . The distance Y1 is determined as a value obtained by subtracting the length of the body 2160 along the longitudinal direction from the absolute value of the difference between the distance Y11 and the distance Y12.

  Further, it is not necessary that all the grooves 2211 are formed so that the lengths thereof satisfy the relationship with the allowable range of the positional deviation described above. It is sufficient that at least the length of the groove 2211 provided between the reference line (center line α) and the first terminal member 51 satisfies the above-described relationship with the allowable range of positional deviation. Further, in the light source unit 2 of the present embodiment, the power supply device 4 is disposed at a position closer to the first terminal member 51 than the reference line (center line α) in the longitudinal direction of the mounting member 21. That is, since the temperature of the portion of the substrate 221 between the reference line (center line α) and the first terminal member 51 is relatively likely to increase, the expansion amount of the portion is likely to be relatively large. Here, the power supply device 4 is attached to the attachment member 21 in a direction in which the power input unit 400 is located on the center side (center line α side) in the longitudinal direction of the attachment member 21. On the printed wiring board 40 of the power supply device 4, a common mode choke coil 4010, which is a circuit component that generates a relatively large amount of heat, is mounted near the power input unit 400 (see FIG. 4). That is, the temperature of the power supply device 4 on the side where the power supply input unit 400 is mounted in the longitudinal direction of the printed wiring board 40 tends to be relatively higher. Accordingly, as shown in FIG. 9, when a plurality of (two in the illustrated example) groove portions 2211 are provided between the reference line (center line α) and the first terminal member 51, the reference line (center line α). It is sufficient that the length of the groove 2211 closer to is satisfied so as to satisfy the relationship with the allowable range of the positional deviation described above.

  Next, a construction procedure of the lighting fixture 1 will be described. First, as shown in FIG. 1, the installer inserts the power supply line 30 and the signal line, which are pre-wired behind the ceiling, into the holes 111 </ b> A of the appliance body 10, and further connects the hanging bolts 200 exposed to the indoor side. Through the hole 111B. Thereafter, the constructor fixes the fixture body 10 to the ceiling 100 by screwing the nut 300 into each suspension bolt 200. Thereafter, the installer connects the power supply line 30 to the terminal block 25, and further plugs and connects the plug connector 251 of the terminal block 25 to the power input section 400 (see FIG. 4) of the power supply device 4. Subsequently, the installer electrically connects the signal line to the signal input unit 410 (see FIG. 4) of the power supply device 4.

  Finally, the installer hooks the tips of the pair of hooks 214 into the pair of insertion holes 112A provided in the one side plate 112 of the instrument body 10, and then connects the pair of hook springs 215 to the other side of the instrument body 10. On the hook 1120 provided on the side plate 112. Then, when the installer rotates the light source unit 2 with the hook metal fitting 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 repelled by the spring force of the hook spring 215. The unit 2 is held by the instrument body 10. The lighting fixture 1 is installed on the ceiling 100 in the above procedure.

  As described above, the light source unit 2 includes the light source unit A1, the power supply device 4 having the power supply circuit 49 for supplying power to the light source unit A1, the mounting member 21 to which the light source unit A1 and the power supply device 4 are mounted, and the power supply circuit 49. And a connection member 5 for electrically connecting the light source unit A1 to the light source unit A1. The light source unit A1 includes one or a plurality of solid-state light sources (LEDs 220), a substrate 221 on which one or a plurality of LEDs 220 are disposed on a front surface (lower surface), and a substrate 221 provided with one or a plurality of LEDs 220. And a plurality of input terminal portions 222 that are electrically connected. The power supply circuit 49 has a printed wiring board 40. The printed wiring board 40 has a plurality of output terminals 405 for outputting the power generated by the power supply circuit 49. The attachment member 21 is formed in a plate shape, the light source unit A1 is attached to the first surface, and the power supply device 4 is attached to the second surface, which is the back surface of the first surface. Further, the mounting member 21 is provided with a hole 213 penetrating from the first surface to the second surface. Each of the plurality of output terminal portions 405 is disposed at a position overlapping the hole 213 when viewed from the thickness direction of the mounting member 21. Each of the plurality of input terminal portions 222 is arranged at a position overlapping the hole 213 when viewed from the thickness direction of the mounting member 21. The connection member 5 includes a plurality of conductors 50 formed in a rod shape, a plurality of first terminal members 51, and a plurality of second terminal members 52. Each of the plurality of first terminal members 51 has a plate member 510 having conductivity and having an insertion hole 511 penetrating in the thickness direction. The plate member 510 is electrically connected to one of the plurality of input terminal portions 222. Each of the plurality of first terminal members 51 electrically connects the first end 500 of the corresponding conductor 50 of the plurality of conductors 50 to the corresponding input terminal 222 of the plurality of input terminals 222. And it is comprised so that it may connect mechanically. Each of the plurality of second terminal members 52 electrically and mechanically connects the second end portion 501 of the corresponding conductor 50 with the corresponding output terminal portion 405 of the plurality of output terminal portions 405 through the hole 213. It is configured to connect. The plurality of hooks 216 are arranged so as to be spaced apart from each other along a first direction which is a longitudinal direction of the bottom plate 211 and the substrate 221. The substrate 221 has a plurality of grooves 2211 into which the corresponding hooks 216 among the plurality of hooks 216 are inserted. Each of the plurality of groove portions 2211 is formed such that the length along the first direction is larger than the length of the hook portion 216 along the first direction, and is spaced from each other along the first direction. Have been. Further, at least one of the plurality of grooves 2211 has a difference (distance Y1) between the length of the one groove 2211 in the first direction and the length of the hooking portion 216 in the first direction, and Is configured to satisfy the following condition. The condition is that the conductor 50 is smaller than the movable distance along the first direction in a state where the conductor 50 is electrically connected to the first terminal member 51 and the second terminal member 52.

  The lighting fixture 1 includes a light source unit 2 and a fixture body 10 that supports the light source unit 2.

  Since the light source unit 2 is configured as described above, the manufacturing process can be simplified as compared with a conventional example such as the light source unit described in Patent Document 1. That is, when each of the plurality of conductors 50 is inserted into the corresponding one of the through holes 511 of the plurality of first terminal members 51, the light source unit 2 is connected to the plurality of first terminal members 51. The plurality of second terminal members 52 are electrically connected to each other. Moreover, even if the substrate 221 expands in the longitudinal direction due to thermal expansion, the relative displacement between the first terminal member 51 and the second terminal member 52 is caused by the hooking portion 216 of the mounting member 21 hitting the groove 2211 of the substrate 221. Be regulated. Therefore, even if the substrate 221 thermally expands, the electrical connection between the power supply circuit 49 and the light source unit A1 by the connecting member 5 is maintained. As a result, the light source unit 2 does not need to connect the power supply device 4 and the light source unit A1 with an electric wire, so that the manufacturing process can be simplified. Further, with the lighting fixture 1, the manufacturing process (of the lighting fixture 1) can be simplified with the simplification of the manufacturing process of the light source unit 2.

  Further, in the light source unit 2, it is preferable that one groove portion 2211 is disposed between the central position (the position of the center line α) in the first direction (longitudinal direction) of the substrate 221 and the input terminal portion 222. .

  If the light source unit 2 is configured as described above, the relative displacement between the first terminal member 51 and the second terminal member 52 can be further restricted.

  Further, in the light source unit 2, one groove 2211 is the groove closest to the center among the plurality of grooves 2211 arranged between the center position of the substrate in the first direction and the input terminal 222. 2211 is preferred.

  If the light source unit 2 is configured as described above, the relative displacement between the first terminal member 51 and the second terminal member 52 can be further restricted.

A1 light source unit 1 lighting fixture 2 light source unit 4 power supply device 5 connecting member 10 fixture main body 21 mounting member 22 LED module (light source unit)
Reference Signs List 40 Printed wiring board 42 Case 49 Power supply circuit 50 Conductor 51 First terminal member 52 Second terminal member 211 Bottom plate 213 Hole 216 Hook 220 LED (solid light source)
221 substrate 222 input terminal 405 output terminal 500 first end 501 second end 510 plate 511 insertion hole 2211 groove

Claims (4)

A light source portion, a power supply device having a power supply circuit for supplying power to the light source portion, a mounting member to which the light source portion and the power supply device are mounted, and a connection member for electrically connecting the power supply circuit and the light source portion. With
The light source unit is provided on the substrate and one or more solid-state light sources, a substrate on which the one or more solid-state light sources are disposed, and the one or more solid-state light sources are electrically connected. A plurality of input terminal portions,
The power supply circuit has a printed wiring board, the printed wiring board has a plurality of output terminal unit that outputs the power generated by the power supply circuit,
The mounting member is formed in a plate shape, the light source unit is mounted on a first surface, and the power supply device is mounted on a second surface which is a back surface of the first surface, and A plurality of hooks projecting from one surface, wherein the bottom plate is provided with a hole penetrating from the first surface to the second surface,
Each of the plurality of output terminal portions is disposed at a position overlapping the hole when viewed from the thickness direction of the mounting member,
Each of the plurality of input terminal portions is disposed at a position overlapping the hole when viewed from the thickness direction of the mounting member,
The connection member has a plurality of conductors formed in a rod shape, a plurality of first terminal members, and a plurality of second terminal members,
Each of the plurality of first terminal members has conductivity, and has a plate material provided with an insertion hole penetrating in the thickness direction,
The plate is electrically connected to one of the plurality of input terminals,
Each of the plurality of first terminal members electrically and mechanically connects a first end of a corresponding one of the plurality of conductors to a corresponding one of the plurality of input terminal portions. Configured to connect to
Each of the plurality of second terminal members electrically and mechanically connects a second end of the corresponding conductor with the corresponding output terminal of the plurality of output terminals through the hole. Is composed of
The plurality of hooks are respectively arranged so as to be spaced apart along a first direction that is a longitudinal direction of the bottom plate and the substrate,
The substrate has a plurality of grooves into which a corresponding hook of the plurality of hooks is inserted,
The plurality of groove portions each have a length along the first direction larger than a length of the hook portion along the first direction, and are arranged at intervals along the first direction. Formed as
Further, at least one groove of the plurality of grooves is configured such that a difference between a length of the one groove along the first direction and a length of the hook along the first direction is determined by the conductor. A light source unit, wherein the light source unit is configured to be smaller than a movable distance along the first direction while being electrically connected to the first terminal member and the second terminal member.   The light source unit according to claim 1, wherein the one groove portion is disposed between a center position of the substrate in the first direction and the input terminal portion.   The one groove portion is a groove portion closest to the center position among a plurality of groove portions arranged between the center position of the substrate in the first direction and the input terminal portion. The light source unit according to claim 2.   A lighting fixture comprising: the light source unit according to claim 1; and a fixture main body that supports the light source unit.

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