JP6340724B2 - Light source unit and lighting apparatus - Google Patents

Description

  The present invention relates to a light source unit using a solid light-emitting element as a light source, and a lighting fixture including the light source unit.

  The LED lamp of patent document 1 is illustrated as a conventional light source unit. The LED lamp includes an LED substrate, a plurality of LED modules, a human sensor unit, a sensor base, a translucent cover, a heat radiating member, a power supply unit, and a pair of caps. This LED lamp is used as an alternative to a straight tube fluorescent lamp and is configured to be attachable to a lighting device for a straight tube fluorescent lamp.

  The LED substrate is formed in a long rectangular shape, and a plurality of LED modules are mounted on one surface thereof. The human sensor unit incorporates a pyroelectric element inside a cylindrical housing, and is configured to detect the presence of a person by detecting infrared rays (heat rays) emitted from the human body with the pyroelectric element. The

  The translucent cover is formed in a cylindrical shape with a synthetic resin having translucency, and accommodates an LED substrate, a human sensor unit, a power supply unit, and the like. In addition, a base is attached to each end of the translucent cover.

  The human sensor unit is supported by the sensor base. The sensor pedestal is formed in a U-shape with a translucent material such as acrylic resin. In addition, the sensor pedestal is arranged so as to straddle the end of the LED substrate in the longitudinal direction. That is, the sensor base overlaps with the plurality of LED modules mounted on the end portion of the LED substrate in the optical axis direction.

  The power supply unit is configured to convert AC power supplied from an external power supply (commercial power supply) into DC power, and to turn on the LED module for a predetermined time after receiving the sensing signal from the human sensor unit. Yes.

  Since the LED lamp described in Patent Document 1 supports the human sensor unit by the transparent sensor pedestal as described above, even if the sensor pedestal straddles the LED module, the light from the LED module is detected by the sensor pedestal. Can be avoided.

JP 2013-65544 A

  By the way, in the conventional example described in Patent Document 1, the sensor pedestal does not block the light of the LED module, but the human sensor unit supported by the sensor pedestal blocks the light of the LED module. If the light of some LED modules (the LED modules overlapping with the human sensor unit in the optical axis direction) is blocked in this way, a reduction in efficiency is inevitable.

  The present invention has been made in view of the above-described problems, and an object thereof is to suppress a decrease in efficiency as compared with the conventional example.

  The light source unit of the present invention includes a light source having a plurality of solid-state light emitting elements, an attachment member that supports the light source and is detachably attached to a fixture body of a lighting fixture, and at least a portion made of a material having translucency. A cover that is formed in a shape and is attached to the attachment member so as to cover the light source, a power supply device that is attached to the attachment member and supplies power to the light source, and functions related to the light source by acting on the power supply device A functional component for realizing the functional component, wherein the functional component is disposed on the cover in a state where at least a part is exposed from the hole provided in the cover, and the light source includes the plurality of light sources. A solid-state light-emitting element and a printed wiring board attached to the attachment member, wherein the printed wiring board faces the cover in a direction facing the cover. In a region other than the region overlapping with the serial functional components, wherein said solid state light emitting devices are mounted.

  The lighting fixture of the present invention includes any one of the light source units, and a fixture main body on which the light source unit is detachably mounted to support the light source unit.

  The light source unit and the lighting fixture of the present invention have an effect that the reduction in efficiency can be suppressed as compared with the conventional example.

It is the disassembled perspective view which abbreviate | omitted one part of the light source unit which concerns on this invention. It is the longitudinal cross-sectional view which abbreviate | omitted one part of the lighting fixture which concerns on this invention. It is a cross-sectional view of a lighting fixture same as the above. It is a disassembled perspective view of a lighting fixture same as the above. 5A and 5B are circuit configuration diagrams of the LED module of the above.

  Hereinafter, embodiments of the light source unit 2 and the lighting fixture A according to the present invention will be described in detail with reference to the drawings. In the following description, unless otherwise specified, the vertical and horizontal directions are defined in the orientation shown in FIG. 3, and the direction perpendicular to the paper surface in FIG. 3 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.3 and FIG.4. The appliance body 1 is fixed to the suspension bolt 200 and directly attached to the lower surface (ceiling surface) of the ceiling material 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 material 100) opened by bending the sheet metal. Further, the appliance main 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 material 100 over the entire length in the longitudinal direction (front-rear direction) (FIG. 4). reference). In addition, on both sides of the recess 11 in the left-right direction (width direction) of the instrument body 1, there are provided inclined portions 12 that extend from the opening edge of the recess 11 and incline upward toward the outside (FIG. 3). reference).

  In addition, the bottom plate 111 of the recess 11 is provided with a hole 111 </ b> A for passing an electric wire at substantially the center in the front-rear 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.

  As shown in FIGS. 3 and 4, the light source unit 2 includes a plurality of (for example, two) LED modules 22 and an attachment member 21 to which the LED modules 22 are attached. The light source unit 2 includes a cover 23 that is attached to the attachment member 21 so as to cover the LED module 22, a power supply device 24, and a functional component.

  The LED module 22 includes a printed wiring board 221 formed in a rectangular plate shape that is long in the front-rear direction. The printed wiring board 221 has a plurality of LEDs (light emitting diodes) 222 mounted on its lower surface along the front-rear direction (longitudinal direction). In addition, a connector 224 for electrically connecting the power supply device 24 is mounted on the front end portion of one LED module 22 (see FIG. 1). An electric wire (not shown) is connected to the connector 224, and the LED module 22 and the power supply device 24 are electrically connected by connecting the end of the electric wire to the power supply device 24.

  Each LED module 22 is mounted with a power supply connector (not shown) at the end facing the adjacent LED module 22. The lighting power is relayed from one LED module 22 to the other LED module 22 by connecting the connectors 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. As shown in FIG. 1, hooks 212 </ b> A that curve in directions away from each other (outward) are provided at the front ends (upper ends) of the side plates 212, respectively.

  At the front end portion of the bottom plate 211, a hole (not shown) is provided for passing the electric wire that electrically connects the LED module 22 and the power supply device 24. In addition, a rectangular recess (not shown) 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 for securing an insulation distance between the relay connector 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 2111 formed, for example by raising a part of the baseplate 211 of the attachment member 21 (refer FIG. 1).

  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 power supply device 24 includes a power supply board (not shown) and a storage case 242 for storing the power supply board. The power board is composed of a printed wiring board formed in a rectangular plate shape that is long in the front-rear direction, and on this printed wiring board, circuit components (for example, a transformer, a diode, a capacitor, etc.) necessary to generate at least the lighting power of the LED 222 are formed. ) 241 is implemented.

  The storage case 242 is formed in a rectangular box shape in which one surface (a surface facing the bottom plate 211 of the mounting member 21) is open and long in the front-rear direction. In addition, the storage case 242 is attached to the side plate 212 of the mounting member 21 using, for example, screws, such that the opening side faces the bottom plate 211 of the mounting member 21.

  As shown in FIGS. 1 and 4, the cover 23 includes two members, a first cover body 23 </ b> A and a second cover body 29.

  23 A of 1st cover bodies are formed in the elongate box shape which an upper surface (surface by the side of the attachment member 21) opens with the material (for example, milky white acrylic resin) which has a diffusibility. Further, the first cover body 23A has a curved surface portion 231 having a convex lens shape such that a protruding amount increases downward from the both ends to the center in the left-right direction (width direction) (see FIG. 3). ).

  At both ends in the left-right direction of the first cover body 23A, as shown in FIG. 3, the light source unit 2 is attached to the instrument main body 1 so as to overlap the opening edge of the recess 11 of the instrument main body 1 in the vertical direction. Outlets 232 are respectively provided. Furthermore, 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 first cover body 23A. Protrusions 233A projecting inward are provided at the tips of 233, respectively. Further, near the base of each protruding wall portion 233, support pieces 233B that protrude inward are provided.

  In the second cover body 29, a curved surface portion 290, an end portion 291 and a protruding piece 292 are integrally formed as a synthetic resin molded body (see FIG. 1). The curved surface part 290 has the same curved surface shape as the curved surface part 231 of the first cover body 23A. The end portion 291 is formed so as to close one end side of the curved surface portion 290. The protruding piece 292 is formed so as to protrude from the peripheral edge on the other end side of the curved surface portion 290 (see FIG. 2). In addition, a pair of protruding walls 293 projecting upward are formed integrally with the curved surface portion 290 on the back surface (upper surface) of the curved surface portion 290. Further, a rectangular hole 2900 is opened at the center of the curved surface portion 290. In addition, a wall 2901 is provided around the hole 2900 on the back surface side of the curved surface portion 290 (see FIG. 1). The second cover body 29 is formed of a synthetic resin material that does not have translucency.

  The light source unit 2 of the present embodiment includes a human body detection unit 26 as a functional component. As shown in FIG. 1, the human body detection unit 26 includes a pyroelectric infrared sensor 260, a signal processing circuit (not shown) that outputs a human body detection signal by processing the output of the infrared sensor 260, a variable resistor 261, and the like. Is mounted on a printed wiring board 262.

  The infrared sensor 260 is well known in the art, and is configured to detect the movement (presence) of a person in the detection region by detecting infrared rays emitted from the human body with a pyroelectric element. The signal processing circuit outputs a human body detection signal when the infrared sensor 260 detects the presence of a person. However, the sensor is not limited to the passive infrared sensor 260 using a pyroelectric element, but may be an sensor using an image sensor or an active sensor using radio waves or ultrasonic waves.

  The signal processing circuit continues outputting the human body detection signal until a predetermined operation holding time elapses after the infrared sensor 260 no longer detects the presence of a person. Further, the signal processing circuit stops outputting the human body detection signal if the infrared sensor 260 does not detect the presence of a person before the operation holding time elapses, and the infrared sensor 260 is turned on again before the operation holding time elapses. When the presence of a person is detected, the human body detection signal is continuously output. The variable resistor 261 is provided for adjusting the operation holding time. That is, the signal processing circuit is configured to adjust the operation holding time corresponding to the resistance value of the variable resistor 261. Although not shown, a power supply line for supplying power to the human body detection unit 26 and an output line for outputting a human body detection signal from the signal processing circuit are drawn out from the printed wiring board 262.

  The human body detection unit 26 is held by a holding member 27 as shown in FIGS. 1 and 2. The holding member 27 is made of a rectangular box-shaped synthetic resin molded body having an opening on one side, and is configured to house and hold the human body detection unit 26 therein. A step portion 270 is formed on the outer peripheral surface of the holding member 27 over the entire circumference. Further, a first window hole 2710 through which the lens 2600 of the infrared sensor 260 is inserted and a second window hole 2711 through which the operation knob 2610 of the variable resistor 261 is inserted penetrate the bottom wall 271 of the holding member 27. ing.

  Of the side walls from the stepped portion 270 to the bottom wall 271, the holding member 27 is formed in a semi-cylindrical surface shape in which a side wall 272 facing in the short side direction (left-right direction) is convex toward the inside. Further, a pair of first hook portions 273 and a pair of second hook portions 274 protrude from both ends in the front-rear direction on the left and right side surfaces in the vicinity of the opening end of the holding member 27. The first hook portion 273 is formed in a bowl shape (S-shape) when viewed from the front-rear direction. The second hooking portion 274 is formed in an L shape when viewed in the vertical direction.

  The holding member 27 is attached to the attachment member 21 via the pedestal 28. The pedestal 28 is integrally formed as a synthetic resin molded body with a rectangular plate-shaped main portion 280 and a pair of prismatic protrusions 281 protruding upward from the left and right sides of the main portion 280. In addition, rectangular insertion grooves 282 are respectively provided at both left and right ends on the rear end side of the main portion 280. Further, on the left and right sides of the front end side of the main portion 280, hook-shaped protrusions 283 are provided so as to protrude downward.

  As shown in FIG. 1, the pedestal 28 is attached to the attachment member 21 by fitting a pair of protrusions 281 into a pair of through holes 2110 provided in the bottom plate 211 of the attachment member 21.

  The holding member 27 is slid in parallel with the main portion 280, thereby inserting the pair of first hook portions 273 into the pair of insertion grooves 282, and the pair of second hook portions 274 into the pair of projecting pieces 283. Each is hooked and attached to the base 28. That is, the holding member 27 is attached to the pedestal 28 so as to be movable along the longitudinal direction (front-rear direction) of the attachment member 21.

  Next, the assembly procedure of the light source unit 2 will be described. First, the worker attaches the power supply device 24 to the upper surface side of the bottom plate 211 of the attachment member 21, and fixes the LED module 22 to the bottom plate 211 of the attachment member 21 with the locking claws 2111. Thereafter, the operator passes an electric wire led out from the connector 224 of the LED module 22 through a hole provided in the bottom plate 211 of the mounting member 21, and connects the end to the power supply device 24.

  Subsequently, the worker houses and holds the human body detection unit 26 inside the holding member 27. At this time, the operator draws the power supply line and the output line drawn from the human body detection unit 26 out of the holding member 27 through the insertion groove 276 provided near the opening end of the holding member 27.

  Next, the operator inserts the pair of first hook portions 273 into the pair of insertion grooves 282, and hooks the pair of second hook portions 274 on the pair of protrusions 283, respectively. 28 is attached.

  Further, the operator attaches the front end portion of the holding member 27 (the portion from the step portion 270 to the bottom wall 271; hereinafter the same) to the hole 2900 of the curved surface portion 290 of the second cover body 29, and the back surface of the curved surface portion 290. The step portion 270 of the holding member 27 is abutted against the wall 2901 of the curved surface portion 290 through the side (upper side). As a result, the distal end portion of the holding member 27 protrudes out of the second cover body 29 through the hole 2900. At this time, the holding member 27 is configured such that the side wall 272 of the holding member 27 and the curved surface portion 290 of the second cover body 29 are flush with each other. Therefore, the joint between the holding member 27 and the second cover body 29 becomes inconspicuous, and the appearance can be improved.

  Subsequently, the operator attaches the second cover body 29 to which the holding member 27 and the pedestal 28 are attached to the first cover body 23A. At this time, the protruding piece 292 of the second cover body 29 is fitted inside the end portion of the first cover body 23A (the end portion of the curved surface portion 231), whereby the curved surface portion 290 of the second cover body 29 and the first The curved surface portion 231 of the cover body 23A is flush. In addition, when the protruding wall portions 233 of the first cover body 23A are fitted into a pair of slits (not shown) of the second cover body 29, the second cover body 29 is fixed to the first cover body 23A. (See FIGS. 2 and 3). The two cover bodies 23A and 29 are preferably bonded with an adhesive.

  Then, the operator assembles the cover 23 (the first cover body 23A and the second cover body 29) on the attachment member 21 with the opening side facing upward. At this time, the protrusions 233A provided on the respective protruding wall portions 233 of the first cover body 23A are hooked on the hook portions 212A provided on the side plates 212 of the attachment member 21, respectively, and the first cover body 23A is attached to the attachment member 21. It is attached. Further, the operator draws the power supply line and the output line drawn from the insertion groove 276 to the upper surface side of the mounting member 21 through the inside of the one protrusion 281 and connects to the power supply device 24.

  Finally, the operator inserts a stepped screw into a long through hole (not shown) provided in the protruding wall portion 233 of the first cover body 23A of the mounting member 21 and the protruding wall 293 of the second cover body 29. 235 is inserted. Then, the operator screws the cover 23 onto the mounting member 21 by screwing the stepped screw 235 into the screw hole 2120 provided in the side plate 212 of the mounting member 21. The light source unit 2 is assembled according to the above procedure.

  Then, the construction procedure of the lighting fixture A is demonstrated. First, the operator passes the power line 3 (see FIG. 4) wired in advance on the back of the ceiling through 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 body 300 is screwed into the suspension bolt 200 to fix the instrument body 1. Thereafter, the operator connects the end of the power supply line 3 to the terminal block 25, and further connects the female connector 251 of the terminal block 25 and the male connector 243 of the power supply device 24.

  Finally, the operator hooks the tips of the hooks 214 into the pair of insertion holes 112 </ b> A provided in one side plate 112 of the instrument main body 1, and then attaches the pair of hook springs 215 to the other side plate of the instrument main body 1. Hook on a hook 1120 provided at 112. Then, when the operator rotates the light source unit 2 so as to lift 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 driven 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 according to the above procedure.

  Thus, in the lighting fixture A of the present embodiment, for example, while the human body detection signal is output from the human body detection unit 26, the power supply device 24 supplies the LED module 22 with the rated power and causes the LED 222 to be rated. On the other hand, when the human body detection signal is not input from the human body detection unit 26 and the standby time elapses, the power supply device 24 stops the power supply to the LED module 22 or reduces the output power to turn off the LED 222 or dimm it. That is, by using the light source unit 2 of the present embodiment, it is possible to achieve energy saving by blinking (or switching between rated lighting and dimming lighting) according to the presence or absence of a person.

  By the way, the human body detection unit 26, the holding member 27, and the pedestal 28 cover the one end part of the LED module 22 in the longitudinal direction from below in the state of being attached to the attachment member 21 (see FIG. 2). That is, even if the LEDs 222 are present at the one end, most of the light emitted from the LEDs 222 is blocked by the human body detection unit 26, the holding member 27, and the base 28 (hereinafter collectively referred to as functional parts). Will end up.

  Therefore, in the light source unit 2 of the present embodiment, the LED 222 is not mounted on the one end portion of the LED module 22 as shown in FIGS. That is, the LED 222 is mounted only in a region (a mounting region X2 surrounded by a one-dot broken line in FIG. 1) excluding the one end portion (the non-mounting region X1 surrounded by a broken line in FIG. 1) of the printed wiring board 221. .

  Therefore, in the light source unit 2 of the present embodiment, the light that is blocked by the functional component out of the light radiated from the LED module 22 is almost eliminated, so that a decrease in efficiency is suppressed as compared with the conventional example. The efficiency of the light source unit 2 is indicated by the ratio of the light emission amount (light flux) of the LED module 22 to the power consumption of the light source unit 2 (power input to the power supply device 24).

  As described above, the light source unit 2 of the present embodiment includes a light source (LED module 22) having a plurality of solid state light emitting elements (LEDs 222) and an attachment that detachably attaches to the fixture body 1 of the lighting fixture A while supporting the light source. And a member 21. Moreover, the light source unit 2 of this embodiment is provided with the cover 23 attached to the attachment member 21 so that at least one part is formed in a box shape with the material which has translucency, and covers a light source. Furthermore, the light source unit 2 of the present embodiment includes a power supply device 24 that is attached to the attachment member 21 and supplies power to the light source, and a functional component that acts on the power supply device 24 and realizes functions related to the light source (human body detection unit 26). , Holding member 27 and pedestal 28). The functional component is disposed on the cover (second cover body 29) in a state in which at least a part is exposed outside the cover (second cover body 29) from the hole 2900 provided in the cover (second cover body 29). The The light source (LED module 22) includes a plurality of solid light emitting elements (LED 222) and a printed wiring board 221 attached to the attachment member 21. The printed wiring board 221 is located in a region X2 other than the region X1 that overlaps the functional component along the direction (vertical direction) facing the cover (second cover body 29) on the surface facing the cover (second cover body 29). A solid state light emitting device (LED 222) is mounted.

  Moreover, the lighting fixture A of this embodiment is provided with the light source unit 2 and the fixture main body 1 with which the light source unit 2 is detachably mounted and supports the light source unit 2.

  The light source unit 2 and the luminaire A of the present embodiment are configured as described above, and the light of the light source (LED module 22) is prevented from being blocked by the functional components, so that it is less efficient than the conventional example. Can be suppressed.

  Here, the light source unit 2 of the present embodiment is basically a type in which functional parts are not mounted (except that the cover 23 is composed of two members (the first cover body 23A and the second cover body 29)). The basic structure has the same structure as the light source unit. Therefore, the light source unit 2 of the present embodiment can be manufactured with only a simple specification change by changing the cover from the basic type light source unit and incorporating a functional component, and the manufacturing cost from the basic type light source unit. Can be suppressed as much as possible.

  Therefore, also for the LED module 22, it is preferable that the printed wiring board 221 is shared by the basic type LED module 22 and the LED module 22 in the light source unit 2 of the present embodiment on which the functional components are mounted. Therefore, in the light source unit 2 of the present embodiment, the LED module 22 is configured such that the LEDs 222 are not mounted in a partial area of the printed wiring board 221 (an area overlapping with the functional component).

  In the light source unit 2 of the present embodiment, the printed wiring board 221 includes a mounting region X2 where the solid light emitting element (LED 222) is mounted and a non-mounting region X1 where the solid light emitting element (LED 222) is not mounted on the opposing surface (lower surface). ). Further, the printed wiring board 221 preferably has wiring conductors electrically connected to the plurality of solid state light emitting elements (LEDs 222) in the mounting region X2 and the non-mounting region X1.

  If the light source unit 2 of this embodiment is comprised as mentioned above, since the printed wiring board 221 can be shared with the light source unit which does not mount a functional component, manufacturing cost can be reduced.

  Furthermore, in the light source unit 2 of the present embodiment, the wiring conductor includes a plurality of first wiring conductors 221A configured to electrically connect the same number of solid state light emitting elements (LEDs 222) to each other in parallel. preferable. In the light source unit 2 of the present embodiment, it is preferable that the wiring conductor includes one or more second wiring conductors 221B configured to electrically connect the plurality of first wiring conductors 221A in series. .

  For example, as shown in FIGS. 5A and 5B, four LEDs 222 are connected in parallel by the first wiring conductor 221A to form one parallel circuit, and a plurality of parallel circuits are further formed by the second wiring conductor 221B. Connected in series. In the basic type light source unit 2 on which no functional component is mounted, the LEDs 222 are connected to all the first wiring conductors 221A without shortage.

  On the other hand, in the light source unit 2 of the present embodiment, as shown in FIG. 5A, the four LEDs 222 constituting one parallel circuit are not mounted, and a part of the first wiring conductor 221A where the LEDs 222 are not mounted is a jumper component. Shorted at 225. If the non-mounting area is the size of two parallel circuits, a total of eight LEDs 222 constituting the two parallel circuits are not mounted as shown in FIG. 5B, and the first wiring conductor is not mounted with the LEDs 222. A part of 221 </ b> A is short-circuited by the jumper component 225.

  For example, when three LEDs 222 out of four LEDs 222 constituting one parallel circuit are not mounted, and only one LED 222 is mounted, a current flowing through the one LED 222 flows through the other LEDs 222. About 4 times the current. As a result, the brightness of the one LED 222 is higher than the brightness of the other LEDs 222, resulting in uneven brightness. In addition, a current that is four times that of the other LEDs 222 flows through the single LED 222 per unit time, so that the amount of heat generation increases and the life of the LED 222 may be shortened. On the other hand, if the light source unit 2 of the present embodiment is configured as described above, the difference in current flowing through each LED 222 is reduced, so that the luminance unevenness of the LED module 22 can be suppressed and excessive heat generation is performed. Thus, the shortening of the life of the LED 222 can be suppressed.

  Instead of the human body detection unit 26, a brightness detection unit may be mounted on the light source unit 2 as a functional component. The brightness detection unit is configured by mounting a brightness sensor on a printed wiring board 262 instead of the infrared sensor 260. The brightness sensor detects (measures) the brightness (illuminance) of the illumination space using a photoelectric conversion element such as a solar cell, for example. The signal processing circuit is configured to compare the measurement value of the brightness sensor with a predetermined threshold value and output a brightness detection signal when the measurement value falls below the threshold value. For example, the power supply device 24 is configured to supply power to the LED module 22 to light the LED 222 when a brightness detection signal is output. Furthermore, for example, the power supply device 24 is configured to turn off or dimm the LED 222 by stopping the power supply to the LED module 22 or reducing the output power when the brightness detection signal is not output. In addition to the human body detection unit 26 and the brightness detection unit, for example, a drawstring switch (so-called pull switch) may be mounted on the light source unit 2 as a functional component.

DESCRIPTION OF SYMBOLS 1 Instrument main body 2 Light source unit 21 Mounting member 22 LED module (light source)
23 Cover 24 Power supply device 26 Human body detection unit (functional component)
27 Holding members (functional parts)
28 pedestal (functional parts)
29 Second cover body (cover)
221 Printed wiring board 222 Light emitting diode (solid state light emitting device)

Claims (5)

A light source having a plurality of solid-state light emitting elements, an attachment member that supports the light source and is detachably attached to a fixture body of a lighting fixture, and at least a part thereof is formed in a box shape with a light-transmitting material, and A cover attached to the attachment member so as to cover the light source; a power supply device attached to the attachment member for supplying power to the light source; and a functional component for acting on the power supply device to realize functions related to the light source; With
The functional component is disposed in the cover in a state where at least a part is exposed outside the cover from a hole provided in the cover,
The light source includes the plurality of solid state light emitting devices and a printed wiring board attached to the attachment member, and the printed wiring board is disposed on the surface facing the cover along the facing direction of the cover. A light source unit, wherein the solid-state light emitting element is mounted in a region other than a region overlapping with a functional component.   The printed wiring board has a mounting area where the solid light emitting element is mounted and a non-mounting area where the solid light emitting element is not mounted on the facing surface, and the printed wiring board further includes the mounting area and the mounting area. The light source unit according to claim 1, wherein a wiring conductor electrically connected to the plurality of solid state light emitting elements is formed in a non-mounting region.   The plurality of first wiring conductors configured to electrically connect the same number of the solid state light emitting elements to each other in parallel, and the plurality of first wiring conductors are electrically connected in series. The light source unit according to claim 2, further comprising one or more second wiring conductors configured as described above. A holding member that holds the functional component; and a pedestal that supports the holding member and is attached to the attachment member;
The light source unit according to claim 1 , wherein the pedestal is disposed on a side of the mounting member facing the cover . An illumination fixture comprising: the light source unit according to any one of claims 1 to 4; and a fixture main body on which the light source unit is detachably mounted to support the light source unit.

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