JP2017059374A - Light source unit and lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress occurrence of abnormal noise.SOLUTION: A light source unit W includes: an LED module 1; a metal mounting member 2 mounted on a fixture body 6 of a lighting fixture X by supporting the LED module 1; and a cover (cover body 30) made of synthetic resin mounted on the mounting member 2. The mounting member 2 is formed in a long shape. The cover body 30 is formed in a long shape, and has one or a plurality of ribs 307 projecting toward the mounting member 2 on the surface opposing to the mounting member 2 along the longer direction of the mounting member 2. The light source unit W has ribs 307 at the cover body 30, so that by reducing a contact area between the cover body 30 and the mounting part 2, occurrence of abnormal noise due to the difference in thermal expansion coefficients of the cover body 30 and the mounting part 2 can be suppressed.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a light source unit and a lighting fixture, and more particularly, to a light source unit using a light emitting diode as a light source, and a lighting fixture having the light source unit.

  As a conventional example, a light source unit and a lighting fixture described in Patent Document 1 are illustrated. The light source unit described in Patent Document 1 is attached to an attachment member so as to cover the LED substrate having an LED substrate on which a plurality of light emitting diodes (LEDs) are mounted, an attachment member to which the LED substrate is attached, and an LED substrate. A cover member.

  The attachment member is formed in a U shape by a metal plate. The attachment member has a bottom surface portion formed in a long rectangular plate shape to which the LED substrate is attached, and a pair of side surface portions that respectively rise in the thickness direction of the bottom surface portion from both ends along the longitudinal direction of the bottom surface portion. Moreover, the inclination part inclined outward is provided in the front-end | tip of a pair of side part over the full length.

  On the other hand, the cover member is formed long with a synthetic resin material having translucency. Further, the cover member is provided with a pair of projecting wall portions that protrude from both ends along the longitudinal direction over the entire length. Protrusions projecting inward are provided at the tips of the pair of projecting walls.

  The cover member is attached to the attachment member by hooking projections provided at the distal ends of the pair of projecting wall portions to inclined portions provided at the distal ends of the pair of side surface portions of the attachment member.

JP 2014-78511 A

  By the way, in the conventional example described in Patent Document 1, since the coefficient of thermal expansion is greatly different between the metal mounting member and the synthetic resin cover member, abnormal noise is generated from the portion in contact with the cover member mounting member. Could have occurred.

  This invention is made | formed in view of the said subject, and aims at suppressing generation | occurrence | production of abnormal noise.

  The light source unit of the present invention includes a light source having a plurality of light emitting diodes, a metal attachment member that supports the light source and is attached to a fixture body of a lighting fixture, and a synthetic resin cover that is attached to the attachment member. The attachment member is formed in a long shape, and the cover is formed in a long shape, and protrudes toward the attachment member on a surface facing the attachment member along a longitudinal direction of the attachment member. It has one or a plurality of ribs.

  The lighting fixture of this invention is equipped with the light source unit and the fixture main body which supports the said light source unit, It is characterized by the above-mentioned.

  The light source unit and the lighting fixture of the present invention have an effect that generation of abnormal noise can be suppressed.

It is a perspective view of the lighting fixture and light source unit which concern on embodiment. It is a disassembled perspective view of the lighting fixture and light source unit which concern on embodiment. It is the side view which showed the light source unit which concerns on embodiment, and abbreviate | omitted the end member. It is the disassembled perspective view which a part of light source unit concerning an embodiment omitted. It is the disassembled perspective view which a part of light source unit concerning an embodiment omitted. It is a front view of the attaching member in the light source unit which concerns on embodiment, and the principal part of a cover main body.

  Hereinafter, the light source unit W according to the present embodiment and the lighting fixture X according to the present embodiment will be described in detail with reference to the drawings. 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 modifications can be made according to the design and the like as long as they do not depart from the technical idea of the present invention.

  As shown in FIGS. 1 and 2, a lighting fixture X according to the present embodiment (hereinafter abbreviated as a lighting fixture X) includes a light source unit W (hereinafter abbreviated as a light source unit W) according to the present embodiment, and a fixture main body. 6. However, in the following description, unless otherwise specified, the front, rear, top, bottom, and left and right directions are defined in the direction shown in FIG. That is, the longitudinal direction of the lighting fixture X is the left-right direction, the height direction of the lighting fixture X is the up-down direction, and the width direction (short direction) of the lighting fixture X is the front-back direction.

  As shown in FIGS. 1 and 2, the instrument body 6 includes a top plate unit 60, a reflector plate unit 61, and a frame body 62. The top plate unit 60 includes a top plate 600 formed in a long rectangular flat plate shape, and a pair of side walls 601 that fall downward from the front end and the rear end of the top plate 600. In the top plate unit 60, for example, it is preferable that the top plate 600 and the pair of side walls 601 are integrally formed by bending a metal plate such as a galvanized steel plate. The top plate 600 is provided with a round hole 602 into which the power supply line is drawn in substantially the center in the left-right direction. Further, the top plate 600 is provided with long holes 603 through which the suspension bolts are inserted at positions close to both ends in the left-right direction. A terminal block 63 is attached near the round hole 602 on the lower surface of the top plate 600. The terminal block 63 is electrically connected to a power line drawn from the round hole 602. In addition, it is preferable that three electric wires including the ground wire are drawn out from the terminal block 63. It is preferable that a plug connector is electrically connected to the tips of these three electric wires.

  As shown in FIG. 2, the reflector unit 61 includes a pair of first reflectors 610 and a pair of second reflectors 611. The pair of first reflection plates 610 are formed in a long rectangular flat plate shape that is approximately the same as the length of the top plate 600 in the left-right direction. One first reflector 610 is provided so as to be inclined downward and forward from the lower end of the front side wall 601. The other first reflector 610 is provided so as to incline downward and backward from the lower end of the rear side wall 601. The pair of second reflecting plates 611 is formed in a trapezoidal shape. One of the second reflecting plates 611 has a front end coupled to the left end of the front first reflecting plate 610 and a rear end coupled to the left end of the rear first reflecting plate 610. The other second reflecting plate 611 has a front end coupled to the right end of the front first reflecting plate 610 and a rear end coupled to the right end of the rear first reflecting plate 610. That is, the reflecting plate unit 61 is formed in a long square frustum shape with the upper and lower surfaces open.

  The frame body 62 is formed in a long rectangular frame shape. The frame 62 is coupled to the lower end of the reflector unit 61 (see FIGS. 1 and 2).

  The appliance body 6 configured as described above is suspended by a ceiling plate unit 60 and a reflector plate unit 61 inserted into a rectangular embedding hole provided in a ceiling plate (ceiling finishing material) and suspended from a ceiling slab. The top plate 600 of the top plate unit 60 is attached to the bolt. The frame body 62 is configured to hit the lower surface (ceiling surface) of the ceiling material from below and close the gap between the edge of the ceiling material embedding hole and the reflection plate unit 61.

  As shown in FIGS. 2 and 3, the light source unit W includes a plurality (two in the illustrated example) of LED modules 1, mounting members 2, a cover 3, a light distribution panel 4, a power supply unit 5, and the like.

  The LED module 1 includes a plurality of light emitting diodes (LEDs) 10 and a substrate 11 as shown in FIG. The board | substrate 11 is formed in the rectangular flat plate shape which makes the left-right direction a longitudinal direction. The LED 10 is, for example, a white light emitting diode that emits white light, and is mounted in the center of the front and rear direction (short direction) on the lower surface of the substrate 11 in a line at equal intervals along the left and right direction (longitudinal direction). ing. In addition, a connector for electrically connecting the power supply unit 5 is mounted on the end of one LED module 1. Moreover, the connector for power supply is each mounted in the edge part which opposes the LED module 1 which adjoins in the two LED modules 1. FIG. Then, the lighting power (DC power supplied from the power supply unit 5) is relayed from one LED module 1 to the other LED module 1 by electrically connecting the connectors of the two LED modules 1.

  The mounting member 2 includes a bottom plate 20 formed in a long rectangular flat plate shape, and a pair of side plates 21 formed in a long rectangular flat plate shape and projecting upward from both ends along the left-right direction of the bottom plate 20. Have. In addition, as for the attachment member 2, it is preferable that the bottom plate 20 and a pair of side plate 21 are integrally formed by bending metal plates, such as a galvanized steel plate. Further, hook portions 22 having a substantially cylindrical shape are respectively provided at the upper ends of the pair of side plates 21 (see FIG. 3).

  As for the baseplate 20, the center part of the front-back direction is dented upwards, and the LED module 1 is arrange | positioned in the center part. In addition, a plurality of fixing pieces 23 are cut and raised at the front and rear ends of the center portion of the bottom plate 20 at intervals in the left-right direction (see FIG. 3). The plurality of fixing pieces 23 are configured to support the substrate 11 of the LED module 1 by bending the tip portion inward.

  Moreover, it is preferable that the attachment member 2 is provided with a pair of hook metal fittings 24 and a pair of hook springs 25. The pair of hooks 24 are formed in the shape of bowls, and are provided in the vicinity of the left and right ends of the bottom plate 20 so that the tip portions of the hooks 24 climb over the rear side plate 21 (see FIG. 3). The pair of hooks 24 are hooked in hook holes 64 provided in the instrument body 6 (see FIG. 2). Further, the pair of hook springs 25 are constituted by torsion coil springs, and are respectively provided in the vicinity of the left and right ends at the front end of the bottom plate 20 (see FIG. 3). One end of each of the pair of hook springs 25 is hooked on a spring receiving bracket provided on the instrument body 6. That is, the attachment member 2 is detachably attached to the instrument body 6 by the pair of hook metal fittings 24 and the pair of hook springs 25.

  The power supply unit 5 includes a power supply board and a case 50 that houses the power supply board (see FIG. 3). The power supply board is composed of a printed wiring board formed in a rectangular plate shape that is long in the left-right direction. The printed wiring board includes at least circuit components (for example, a transformer and a diode) necessary for generating the lighting power of the LED module 1. , Capacitors, etc.) are mounted. A receptacle connector 51 is mounted on the left end of the power supply board. The receptacle connector 51 is connected to a plug connector provided at the distal ends of the three wires drawn from the terminal block 63 so as to be inserted and removed. The case 50 is formed in a rectangular box shape from a metal material. In addition, the case 50 is preferably attached to the upper surface of the bottom plate 20 of the attachment member 2 using, for example, screws (see FIG. 3).

  As shown in FIG. 2, the cover 3 includes a cover body 30 and a pair of end members 31. The cover main body 30 includes a front plate portion 300, a diffusion portion 301, a pair of side plate portions 302, a pair of first protruding plate portions 303, a pair of second protruding plate portions 304, a pair of hooking portions 305, and the like (see FIG. 3). The front plate portion 300 is formed in a long rectangular plate shape with the left-right direction as the longitudinal direction. The diffusing portion 301 is formed in a long semi-cylindrical shape that is a curved surface having a downward convex shape when viewed from the longitudinal direction (left-right direction). Each of the pair of first projecting plate portions 303 is formed in a long rectangular plate shape. One first protruding plate portion 303 protrudes forward from the front end along the longitudinal direction of the diffusing portion 301. The other first protruding plate portion 303 protrudes rearward from the rear end along the longitudinal direction of the diffusing portion 301. Each of the pair of side plate portions 302 is formed in a long rectangular plate shape whose shape viewed from the longitudinal direction (left-right direction) is approximately V-shaped. One side plate portion 302 is formed so as to connect the front end of the front plate portion 300 and the front end of the front first protruding plate portion 303. The other side plate portion 302 is formed so as to connect the rear end of the front plate portion 300 and the rear end of the first projecting plate portion 303 on the rear side. Here, the front side plate portion 302 is provided with a narrow protrusion 3060 that extends in parallel with the upper surface of the front plate portion 300 from the lower rear surface over the entire length in the left-right direction. Likewise, the rear side plate portion 302 is provided with a narrow projection 3060 that protrudes in parallel with the upper surface of the front plate portion 300 from the lower front surface over the entire length in the left-right direction. A long space (gap) formed between the pair of protrusions 3060 and the front plate portion 300 is referred to as a holding groove 306.

  Each of the pair of second protruding plate portions 304 is formed in a long rectangular plate shape. One of the second projecting plate portions 304 is formed so as to stand upward from substantially the center in the front-rear direction on the upper surface of the front first projecting plate portion 303. The other second projecting plate portion 304 is formed so as to stand upward from substantially the center in the front-rear direction on the upper surface of the rear first projecting plate portion 303. Each of the pair of second projecting plate portions 304 is provided with a pair of screw insertion holes. The pair of screw insertion holes is a long hole whose longitudinal direction is the left-right direction, and is provided at a position that is substantially equidistant with respect to the center of the second projecting plate portion 304 in the left-right direction. Each of the pair of hook portions 305 is formed in a long semi-cylindrical shape whose shape viewed from the longitudinal direction (left-right direction) is approximately C-shaped. One hooking portion 305 is formed so as to protrude upward from the upper end of the front-side second protruding plate portion 304 and to have the opening directed rearward. The other hooking portion 305 is formed so as to protrude upward from the upper end of the rear second projecting plate portion 304 and to have the opening directed forward.

  By the way, the front plate portion 300, the diffusion portion 301, the pair of side plate portions 302, the pair of first projecting plate portions 303, the pair of second projecting plate portions 304, the pair of hook portions 305, and the pair of protrusions 3060 are made of a synthetic resin material (for example, , Polycarbonate resin). However, the diffusing portion 301 excluding the front plate portion 300, the pair of side plate portions 302, the pair of first projecting plate portions 303, the pair of second projecting plate portions 304, the pair of hooking portions 305, and the pair of protrusions 3060 are, for example, acrylic resin And a diffusion material made of fine particles of silicone resin are mixed. On the other hand, the front plate portion 300 is colorless and transparent (transmittance is almost 100%) because no diffusing material is mixed therein. Furthermore, the diffusion part 301 and the pair of side plate parts 302 are mixed with, for example, an amount of diffusion material having a transmittance of about 60% to 90%. In contrast, the pair of first projecting plate portions 303, the pair of second projecting plate portions 304, and the pair of hooking portions 305 have a transmittance of approximately 0%, that is, an amount of diffusing material that does not transmit is mixed. . Such a cover body 30 is preferably formed by multicolor extrusion.

  The pair of end members 31 have substantially the same shape as the outer shape when the front plate portion 300, the diffusion portion 301, the pair of side plate portions 302, and the pair of first projecting plate portions 303 of the cover body 30 are viewed from the longitudinal direction (left-right direction). It is formed in a plate shape (see FIGS. 4 and 5). The pair of end members 31 are respectively attached to the left end and the right end of the cover body 30 in a state where the light distribution panel 4 is held in the holding groove 306 of the cover body 30. The pair of end members 31 are preferably joined to the cover body 30 by an appropriate method such as adhesion or ultrasonic welding.

  The light distribution panel 4 is formed in a long rectangular plate shape by using a synthetic resin material having translucency such as acrylic resin (see FIG. 2). Further, the light distribution panel 4 has one surface (upper surface) formed flat, and a plurality of prisms 40 formed on the other surface. As shown in FIGS. 4 and 5, these prisms 40 have a long triangular prism shape whose longitudinal direction is the front-rear direction, and are parallel to each other along the longitudinal direction (left-right direction) of the light distribution panel 4. It is provided to line up at intervals. As shown in FIG. 3, the light distribution panel 4 has the front end portion and the rear end portion of the cover body with the surface on which the prism 40 is provided (hereinafter referred to as the prism surface) facing the front plate portion 300. It is held in a pair of 30 holding grooves 306. However, as shown in FIGS. 4 and 5, the light distribution panel 4 is preferably inserted into the holding groove 306 from one end side in the longitudinal direction (left-right direction) of the cover body 30. The light distribution panel 4 collects the light (illumination light) of the LED module 1 diffused by the diffusing unit 301, thereby suppressing unpleasant glare when viewed from the longitudinal direction (left-right direction).

  Next, the assembly procedure of the light source unit W will be described. The worker who performs the assembly work attaches the power supply unit 5 to the upper surface side of the bottom plate 20 of the attachment member 2, and further fixes the LED module 1 to the upper surface of the bottom plate 20 of the attachment member 2. Subsequently, the operator inserts the output line of the power supply unit 5 into the hole provided in the bottom plate 20 of the mounting member 2, and provides the plug connector provided at the end of the output line at the end of the LED module 1. Plug and connect to the connector (receptacle connector).

  Further, the operator assembles the cover 3 by inserting the light distribution panel 4 into the holding groove 306 from one end side of the cover body 30 and then attaching and joining the end members 31 to both ends of the cover body 30. Then, the operator inserts the attachment member 2 between the pair of second projecting plate portions 304 of the cover 3, and the hook portions 305 at the upper ends of the pair of second projecting plate portions 304 are covered with the pair of side plates 21 of the attachment member 2. Hook the hooks 22 respectively. Further, the operator inserts the stepped screws 32 into the plurality of screw insertion holes provided in the pair of second projecting plate portions 304 of the cover 3, and these stepped screws 32 are connected to the pair of side plates of the mounting member 2. The screw holes 21 are respectively screwed into the screw holes (see FIG. 3). The light source unit W is assembled by the procedure as described above.

  Next, the construction procedure of the lighting fixture X will be described. First, the worker who performs the construction work inserts a plurality of suspension bolts provided in the casing on the back of the ceiling into the plurality of elongated holes 603 of the instrument main body 6 and screws nuts into the plurality of suspension bolts. The main body 6 is fixed to the suspension bolt. Subsequently, the operator electrically connects the power line drawn from the round hole 602 of the top plate 600 to the terminal block 63. Then, the operator hooks the pair of hooks 24 provided on the attachment member 2 in the hook holes 64 of the instrument body 6 and then is provided at the tips of the three wires drawn from the terminal block 63. The plug connector is connected to the receptacle connector 51 of the power supply unit 5. Then, the operator hooks the tips of the pair of hook springs 25 provided on the attachment member 2 on the spring receiving brackets provided on the instrument body 6, and then uses the pair of hook brackets 24 as a fulcrum for the light source unit W. Rotate. Then, the light source unit W is held by the instrument main body 6 by the spring force of the hook spring 25 by returning to the original state while the hook spring 25 is hooked on the spring catch (see FIG. 1). The lighting fixture X is constructed on the ceiling by the procedure as described above.

  Here, the mechanism of abnormal noise generation described in the prior art will be briefly described. This abnormal noise is considered to be generated due to a difference in thermal expansion coefficient between the metal mounting member 2 and the synthetic resin cover 3. That is, when the force of expansion and contraction of the synthetic resin cover 3 (cover body 30) having a relatively large thermal expansion coefficient exceeds the maximum static frictional force on the contact surface between the mounting member 2 and the cover 3, the cover The distortion generated in the main body 30 is suddenly released. When the distortion of the cover body 30 is abruptly released, a friction sound accompanied by vibration is generated on the contact surface of the cover body 30 with the mounting member 2. Such a phenomenon is generally known as a stick-slip phenomenon. And it is considered that the abnormal noise due to the stick-slip phenomenon is more likely to occur as the contact area between the two members (the attachment member 2 and the cover body 30) is larger.

  Therefore, the cover main body 30 of the light source unit W has one or a plurality of ribs protruding toward the mounting member 2 on the surface facing the mounting member 2 along the longitudinal direction of the mounting member 2. Specifically, a plurality of ribs 307 are provided on each of the pair of first projecting plate portions 303 and the pair of hook portions 305 (see FIGS. 3 and 6). The pair of first projecting plate portions 303 are provided on the surface (upper surface) facing the bottom plate 20 of the mounting member 2 so that the two ribs 307 along the longitudinal direction are arranged at intervals in the front-rear direction. . Further, the pair of hook portions 305 are provided on the inner side surface facing the hooked portion 22 so that two ribs 307 along the longitudinal direction are arranged at intervals in the front-rear direction. The ribs 307 are not necessarily all in contact with the attachment member 2 at the same time, and the contact state between the attachment member 2 and the cover body 30 changes depending on the degree of expansion and contraction of the cover body 30. .

  As described above, the first projecting plate portion 303 and the hooking portion 305 of the cover body 30 are in contact with the bottom plate 20 and the hooked portion 22 of the attachment member 2 only at the tips of the ribs 307, and therefore the rib 307 is not provided. In comparison, the contact area between the cover body 30 and the mounting member 2 is reduced. As a result, the light source unit W can suppress the occurrence of abnormal noise accompanying the stick-slip phenomenon. However, the place where the rib 307 is provided is not limited to the first protruding plate portion 303 and the hooking portion 305. For example, when the second projecting plate portion 304 is configured to contact the side plate 21 of the attachment member 2, a rib may be provided on the surface of the second projecting plate portion 304 facing the side plate 21. Further, the number of ribs 307 provided on the first protruding plate portion 303 and the hooking portion 305 may be one or three or more.

  The light source unit W includes a light source (LED module 1) having a plurality of light emitting diodes 10 as described above. The light source unit W includes a metal attachment member 2 that supports the LED module 1 and is attached to the fixture body 6 of the lighting fixture X, and a synthetic resin cover (cover body 30) that is attached to the attachment member 2. Prepare. The attachment member 2 is formed long. The cover body 30 is formed in a long shape, and has one or a plurality of ribs 307 protruding toward the mounting member 2 on a surface facing the mounting member 2 along the longitudinal direction of the mounting member 2.

  If the light source unit W is configured as described above, by reducing the contact area between the cover main body 30 and the mounting member 2, abnormal noise caused by the difference in the thermal expansion coefficient between the cover main body 30 and the mounting member 2 is reduced. Occurrence can be suppressed.

  Further, in the light source unit W, the cover main body 30 includes a pair of side plate portions 302 protruding rearward along the longitudinal direction and a pair of first protruding plate portions 303 protruding inward from the rear ends of the pair of side plate portions 302. It is preferable to have. Further, the cover main body 30 is provided at the rear end of the pair of second projecting plate portions 304 and the pair of second projecting plate portions 304 that project rearward from the rear ends of the pair of side plate portions 302, respectively. It is preferable to have a pair of hook portions 305 that are hooked on the hooked portion 22. The rib 307 is preferably provided on at least one of the first protruding plate portion 303, the second protruding plate portion 304, and the hooking portion 305.

  If the light source unit W is configured as described above, it is possible to further suppress the generation of abnormal noise.

  As described above, the lighting fixture X includes the light source unit W and the fixture body 6 that supports the light source unit W.

  If the lighting fixture X is comprised as mentioned above, generation | occurrence | production of the noise resulting from the difference in the thermal expansion coefficient of the cover main body 30 and the attachment member 2 can be suppressed.

X Lighting fixture W Light source unit 1 LED module (light source)
2 mounting member 3 cover 6 instrument body 10 light emitting diode 22 hooked portion 30 cover body 302 side plate portion 303 first protruding plate portion 304 second protruding plate portion 305 hooking portion 307 rib

Claims (3)

A light source having a plurality of light emitting diodes, a metal attachment member that supports the light source and is attached to a fixture body of a lighting fixture, and a synthetic resin cover that is attached to the attachment member,
The attachment member is formed in a long shape,
The cover is formed in a long shape, and has one or more ribs protruding toward the mounting member on a surface facing the mounting member along the longitudinal direction of the mounting member. unit. The cover includes a pair of side plate portions projecting rearward along the longitudinal direction, a pair of first projecting plate portions projecting inward from rear ends of the pair of side plate portions, and rear ends of the pair of side plate portions. A pair of second projecting plate portions that protrude rearward from each other, and a pair of hook portions that are respectively provided at rear ends of the pair of second projecting plate portions and hooked on the hooked portions provided on the attachment member,
The light source unit according to claim 1, wherein the rib is provided on at least one of the first projecting plate portion, the second projecting plate portion, and the hooking portion.   An illumination fixture comprising: the light source unit of claim 1 or 2; and a fixture main body that supports the light source unit.

Images