Light source housing, light source unit, lighting fixture

Abstract

To provide a light source housing suppressing invasion of foreign matters into a space surrounded by a mounting member and a translucent cover, a light source unit and a lighting fixture.SOLUTION: A light source housing 20 includes: a mounting member 22 on a lower surface 2201 of which a light source module 4 is mounted; a translucent cover 21 mounted on the mounting member 22 so as to cover the surface 2201; and a protection member 3. The translucent cover 21 includes: a bottom part 210 facing the lower surface 2201; a peripheral wall part 211 projecting toward the mounting member 22 from the periphery of the bottom part 210; a cover end part 2111, and claw parts 212. The cover end part 2111 connects the inner peripheral surface and the outer peripheral surface of the peripheral wall part 211, and faces the mounting member 22. The mounting member 22 has through holes 2204 corresponding to the claw parts 212. The protection member 3 is sandwiched by the cover end part 2111 and the mounting member 22. The protection member 3 has flexibility and has seals 32 at least each part of which is located between the cover end part 2111 and the mounting member 22.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention generally relates to a light source housing, a light source unit, and a lighting fixture, and more particularly to a light source housing capable of housing a light source module, and a light source unit and a lighting fixture including the same. [Background technology]

[0002] As a conventional example, the lighting fixture described in Patent Document 1 is exemplified. The lighting fixture described in Patent Document 1 includes a fixture body, a light source unit, a frame, and a translucent panel. The fixture body is formed in a box shape with an open bottom, and is installed in a state where it is embedded in an opening provided in a ceiling material. The light source unit is stored inside the fixture body. The frame is provided with a through hole so as to connect with the opening of the fixture body, and is attached to the fixture body with its upper surface abutting against the periphery of the opening in the ceiling material. The panel is held by the frame so as to cover the through hole. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2014-232713 A Summary of the Invention [Problem to be solved by the invention]

[0004] If a foreign object enters the space surrounded by the fixture body (mounting member), frame, and panel (translucent cover), there is a risk that the light from the light source will cast a shadow on the panel.

[0005] The present invention has been made in consideration of the above-mentioned reasons, and its object is to provide a light source housing, a light source unit, and a lighting fixture that can prevent foreign objects from entering the space surrounded by a mounting member and a translucent cover. [Means for solving the problem]

[0006] The housing for a light source according to one aspect of the present invention includes a mounting member, a translucent cover, and a protective member. The mounting member has a light source module attached to one surface. The translucent cover has The light source module a bottom surface facing the The light source module , and a peripheral wall portion that projects from the bottom surface mosquito toward the mounting member, and is attached to the mounting member so as to cover the mosquito . The translucent cover has a cover end portion and a claw portion. The cover end portion is the The light source module end portion of the peripheral wall portion. The claw portion is provided at the cover end portion. The mounting member has a through-hole corresponding to the claw portion. The protective member is sandwiched between the cover end portion and the mounting member. The protective member has a seal at least partially positioned between the cover end portion and the mounting member. The light source module side In a plan view from a direction in which the claw portion passes through the through hole, the seal overlaps with the through hole.

[0007] A light source unit according to one aspect of the present invention includes the housing for a light source and a light source module housed in the housing for a light source. The light source module has a mounting substrate attached to the mounting member and a solid-state light source mounted on the mounting substrate.

[0008] An illumination device according to one aspect of the present invention includes the light source unit and an appliance body that supports the light source unit.

Advantages of the Invention

[0009] In the housing for a light source, the light source unit, and the illumination device of the present invention, there is an effect that entry of foreign matter into the space surrounded by the mounting member and the translucent cover can be suppressed.

Brief Description of the Drawings

[0010] [Figure 1] FIG. 1 is an exploded perspective view of an illumination device according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a front view of the appliance body in the illumination device described above. [Diagram 3] FIG. 3 is an exploded perspective view of the light source unit in the illumination device described above. [Figure 4] ​FIG. 4 is a partially cutaway front view of the light source unit. [Diagram 5] FIG. 5 is a plan view of the light source unit. [Figure 6] FIG. 6 is a left side view of the light source unit. [Figure 7] FIG. 7 is a perspective view of the above light source unit with a unit cover removed. [Figure 8] Fig. 8A is a partially enlarged plan view of the light source unit of the above embodiment with the translucent cover omitted, and Fig. 8B is a cross-sectional view taken along line AA of Fig. 8A. [Figure 9] FIG. 9 is a partially enlarged cross-sectional view of the light source unit. [Figure 10] FIG. 10 is another enlarged cross-sectional view of the light source unit. [Figure 11] FIG. 11 is a perspective view of the above lighting fixture with the main body omitted. [Figure 12] FIG. 12 is a perspective view of the above lighting fixture. [Figure 13] FIG. 13 is a partially enlarged plan view of the above lighting fixture with the main body thereof omitted. [Figure 14] 14A and 14B are cross-sectional views of a light source housing according to a modified example of the embodiment of the present invention, in which a light-transmitting cover is omitted, and in which the light source housing is partially enlarged. [Figure 15] FIG. 15 is a front view of another type of light source unit in the above lighting fixture. [Figure 16] FIG. 16 is a plan view of another type of light source unit according to the above. [Figure 17] FIG. 17 is a left side view of another type of light source unit of the above. [Figure 18] FIG. 18 is a perspective view of the above lighting fixture in a state in which a different type of light source unit is temporarily suspended. [Figure 19] FIG. 19 is a perspective view of the above lighting fixture with a different type of light source unit attached thereto, with the main body omitted. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] A lighting fixture 1 according to one embodiment of the present invention will be described in detail with reference to the drawings. The lighting fixture 1 of this embodiment is a lighting fixture that can be directly attached to a construction material (e.g., a ceiling). Note that the configuration described in the following embodiment is merely one example of the present invention. The present invention is not limited to the following embodiment, and various modifications are possible depending on the design, etc., as long as the effects of the present invention can be achieved. In other words, the lighting fixture 1 may be a lighting fixture that is directly attached to a construction material other than a ceiling (e.g., a wall, etc.), or a built-in lighting fixture that is embedded in a construction material (e.g., a ceiling or a wall).

[0012] As shown in Fig. 1, the lighting fixture 1 of this embodiment includes a light source unit 2 and a fixture body 10 that supports the light source unit 2. However, in the following description, unless otherwise specified, the up-down direction, the front-back direction, and the left-right direction in Fig. 1 are defined as the up-down direction, the front-back direction, and the left-right direction of the lighting fixture 1.

[0013] The fixture body 10 has a main body 11 that is attached to a construction material (ceiling), and a main body cover 12 that is detachably connected to the main body 11 and covers the main body 11. The main body 11 is made of a metal material such as a zinc steel plate and is formed in a shallow box shape with an open bottom. The main body 11 has a square outer shape when viewed from the top and bottom. A circular power supply hole 110 is provided in the center of the bottom surface of the main body 11. A signal hole 111 is provided near the power supply hole 110. A first terminal block 14 is disposed near the power supply hole 110 on the bottom surface of the main body 11, and a second terminal block 15 is disposed near the signal hole 111. The first terminal block 14 is electrically connected to a power cable 16 that is inserted into the power supply hole 110 (see FIG. 2). The second terminal block 15 is electrically connected to a signal cable 18 that is inserted into the signal hole 111 (see FIG. 2). Furthermore, a power plug connector 17 is attached to the tip of a power line 140 drawn from the first terminal block 14. Furthermore, a signal line 150 is drawn from the second terminal block 15.

[0014] A plurality of bolt insertion holes 112 are also provided on the bottom surface of the main body 11 (see FIG. 1). These bolt insertion holes 112 are formed in an elliptical shape with the direction of the long axis coinciding with the front-rear direction of the main body 11. The main body 11 is attached to a ceiling by fastening nuts to hanging bolts that are inserted into at least two of the bolt insertion holes 112.

[0015] Furthermore, four hook springs 13 are provided on the bottom surface of the main body 11. Each hook spring 13 is composed of a torsion coil spring having a coil portion 130 and two arms. The longer of the two arms is called the first arm 131, and the shorter arm is called the second arm 132. The tip of the first arm 131 is bent into a hook shape (see FIG. 1).

[0016] Each hook spring 13 is attached to the main body 11 by a metal fitting 133 (see FIG. 1). The metal fitting 133 is configured to support the coil portion 130 of the hook spring 13 so as to be rotatable around the axis of the coil portion 130 and movable in the axial direction of the coil portion 130.

[0017] The body cover 12 is made of a metal material such as a zinc steel plate and is formed in a frame shape having an opening 120 that is a square when viewed from above and below. The outer portion (first portion 121) of the opening 120 in the body cover 12 is formed in a shape that is a pyramidal surface of a regular square pyramid with the opening 120 as the bottom surface (upper base). Furthermore, the outer portion (second portion 122) of the first portion 121 in the body cover 12 is formed in a shape that is a pyramidal surface of a regular square pyramid with the periphery of the first portion 121 as the four sides of the bottom surface (upper base). The lower surfaces of the first portion 121 and the second portion 122 are preferably painted with a white paint. However, the shape of the body cover 12 is not limited to the shape of a combination of two pyramidal surfaces as described above. For example, the body cover 12 may be a flat plate.

[0018] As shown in FIG. 1, the main body cover 12 has protruding walls 123 protruding upward (toward the main body 11) from each of the four edges of the opening 120. Of the four protruding walls 123, two protruding walls 123 facing each other in the front-rear direction are each provided with an inverted U-shaped through hole 124 and two hooking portions 125 for hooking the first arm portion 131 of the hook spring 13 (see FIG. 2). Of the four protruding walls 123, the protruding wall 123 protruding from the right edge of the opening 120 is provided with an inverted U-shaped through hole. Of the four protruding walls 123, the protruding wall 123 protruding from the left edge of the opening 120 has a smaller vertical height dimension than the other three protruding walls 123.

[0019] The main body cover 12 is connected to the main body 11 by the spring force of each of the four hook springs 13, as the first arms 131 of the four hook springs 13 carried by the main body 11 are hooked onto the hook portions 125 corresponding to each of the hook springs 13.

[0020] 3 to 7, the light source unit 2 includes two light source modules 4 and a light source housing 20 that houses the two light source modules 4. The light source housing 20 includes an attachment member 22, a light-transmitting cover 21, and a protective member 3. The light source unit 2 further includes a power supply unit 24, a functional unit 25, a unit cover 23, and two attachment springs 26 that are attached to the light source housing 20.

[0021] The mounting member 22 has a square mounting plate 220 and four side plates 221 protruding downward from each of the four sides of the mounting plate 220. However, the mounting plate 220 and the four side plates 221 are preferably formed integrally by bending a metal plate such as a zinc steel plate. Each of the four side plates 221 is formed in an elongated trapezoidal shape.

[0022] The protective member 3 includes a protective sheet 31 and four seals 32 (packings).

[0023] The protective sheet 31 is a resin sheet made of, for example, polyethylene terephthalate. The protective sheet 31 is square and has approximately the same dimensions as the mounting plate 220, and is attached to the mounting plate 220 so as to cover the lower surface 2201 of the mounting plate 220. The protective sheet 31 has a thickness of, for example, 0.188 [mm], and is flexible and elastic. The protective sheet 31 is preferably white in order to improve the reflection efficiency of the light emitted by the light source module, but may be a color other than white, or may be translucent or transparent.

[0024] Each of the four seals 32 is an elastic member having elasticity, and in this embodiment, is made of foamed resin such as foamed polyethylene. Each of the four seals 32 is formed in a rectangular parallelepiped shape. The four seals 32 are bonded to the lower surface 310 of the protective sheet 31 with an adhesive provided between them so as to follow the four sides of the protective sheet 31. Note that, in this embodiment, the four seals 32 are combined to form a frame shape, but the four seals 32 may be formed integrally.

[0025] Each of the two light source modules 4 includes a mounting substrate 41 and a plurality of LEDs 42 (solid-state light sources). Each light source module 4 is configured by mounting a plurality of LEDs 42 on the mounting surface (lower surface) of a rectangular mounting substrate 41 (see Figs. 3 and 4). Each LED 42 is, for example, a white LED for illumination that emits white light. These LEDs 42 are arranged in a lattice pattern on the mounting surface of the mounting substrate 41 and are electrically connected to each other via wiring conductors (copper foil) formed on the mounting surface. The mounting surface of the mounting substrate 41 is colored white to improve the reflection efficiency of the light emitted by the LEDs 42. Each light source module 4 is attached to the lower surface 2201 of the mounting plate 220 by screwing, with the protective sheet 31 sandwiched between the mounting plate 220 and the light source module 4. The two light source modules 4 are attached to the mounting plate 220 so as to be arranged side by side with a gap in the left-right direction.

[0026] Further, receptacle connectors 43 electrically connected to the LEDs 42 via wiring conductors are mounted on the mounting surface of each mounting board 41. The receptacle connectors 43 are provided to vertically penetrate through an insertion hole formed in the mounting board 41, an insertion hole 311 formed in the protective sheet 31 of the protective member 3, and an insertion hole 2203 (see Figs. 3 and 7) formed in the mounting plate 220. That is, each receptacle connector 43 is mounted on the mounting board 41 so as to protrude upward from the upper surface 2202 of the mounting plate 220 in a state in which the mounting board 41 is attached to the lower surface 2201 of the mounting plate 220. A plug connector 2431 of an output cable 2430 connected to the output connector 243 of the power supply unit 24 is connected to each receptacle connector 43 on the upper surface 2202 side of the mounting plate 220.

[0027] The light-transmitting cover 21 has a square bottom 210, a peripheral wall 211 rising upward from the periphery of the bottom 210, and four claws 212 provided on a cover end 2111 which is the upper end of the peripheral wall 211. Each of the four claws is formed in a hook shape and protrudes upward from the center of each side of the frame-shaped cover end 2111. Each claw has a rectangular plate-shaped insertion piece 2121 protruding upward from the cover end 2111, and a locking piece 2122 with a triangular cross-sectional shape protruding from one surface of the insertion piece 2121 facing outward of the peripheral wall 211. The bottom 210, the peripheral wall 211, and the four claws 212 are preferably integrally formed from a light-transmitting synthetic resin material such as acrylic resin or polycarbonate resin. In addition, at least the bottom 210 and the peripheral wall 211 are preferably configured to diffuse light by applying a textured finish to their surfaces. Alternatively, at least the bottom 210 and the peripheral wall 211 are preferably configured to diffuse light by mixing a diffusing agent into a synthetic resin material.

[0028] The light-transmitting cover 21 is attached to the mounting member 22 such that the bottom 210 and the cover end 2111 face the lower surface 2201 of the mounting plate 220 and the peripheral wall 211 fits inside the side plate 221 of the mounting member 22 (see FIG. 6). Here, the mounting plate 220 is provided with one through hole 2204 at a position corresponding to the four claws 212 of the light-transmitting cover 21, that is, at the center of the longitudinal direction of each of the four sides of the mounting plate 220. Each claw 212 is inserted into the corresponding through hole 2204 from the lower side of the mounting plate 220, and the locking piece 2122 is hooked onto the edge of the through hole 2204 in the upper surface 2202 of the mounting plate 220 (see FIGS. 5 and 6).

[0029] Here, the protective sheet 31 is provided with a recess 312 to expose a part of the through hole 2204 in order to facilitate insertion of the claw portion 212 into the through hole 2204 (see FIG. 3 and FIG. 8A). In addition, a plurality of slits 313 (seven in this embodiment) are provided in the portion of the protective sheet 31 corresponding to the through hole 2204. The portion corresponding to the through hole 2204 is the portion of the protective sheet 31 covering the through hole 2204 and its surrounding portion. The plurality of slits 313 are parallel to each other and are formed from one end (the bottom side of the recess 312) of the protective sheet 31 toward the opposite end. The plurality of slits 313 form a plurality of rectangular movable pieces 314. Note that, among the plurality of movable pieces 314 arranged in one direction (the left-right direction in FIG. 8A), the width of the movable pieces 314 at both ends is smaller than the width of the other movable pieces 314.

[0030] Furthermore, seal 32 has narrow portion 321 that is narrower than other portions so as to fit along recess 312 of protective sheet 31 (see FIG. 3). No slit is provided in seal 32, and narrow portion 321 spans multiple slits 313 and overlaps multiple movable pieces 314.

[0031] In order to attach the light-transmitting cover 21 to the attachment member 22, the claw portions 212 of the light-transmitting cover 21 are inserted through the through holes 2204, thereby breaking through the portions of the seal 32 that come into contact with the edges of the claw portions 212. In addition, the multiple movable pieces 314 of the protective sheet 31 are bent to follow the claw portions 212 and pass through the through holes 2204 (see FIG. 9).

[0032] The power supply unit 24 has a power supply circuit configured by mounting electronic components on a printed wiring board 241, and a case 240 that accommodates the power supply circuit (see Figs. 5 and 6). The power supply circuit includes an input connector 242 (see Fig. 7), a rectifier, a power factor correction circuit, a step-down DC / DC converter, an output connector 243, and a control connector 244 (see Fig. 7). The input connector 242 is connected to an input cable 2420 via a plug connector 2421. A receptacle connector 2422 configured to be removably inserted into the power plug connector 17 is attached to the tip of the input cable 2420. The input connector 242 is electrically connected to the power supply line 140 via the input cable 2420, the power cable 16, and the first terminal block 14. The power supply circuit converts AC power input from the input connector 242 into DC power, and then outputs the converted DC power from the output connector 243 via the output cable 2430. The DC power is supplied to each LED 42 of each light source module 4 via a plug connector 2431 connected to the output cable 2430 and the receptacle connector 43. The power supply circuit is configured to increase or decrease the DC power output from the output connector 243 in response to a control signal input from the functional unit 25 to the control connector 244 via the control cable 2440, thereby adjusting (dimming) the light output of the light source module 4. Note that the input cable 2420, the output cable 2430, the control cable 2440, etc. are not shown in FIG. 7.

[0033] The printed wiring board 241 is a long rectangular flat insulating board on whose component surface a wiring conductor (copper foil) is formed. On the surface of the printed wiring board 241, so-called lead components such as an input connector 242, an output connector 243, a control connector 244, a smoothing capacitor, a choke coil, etc. are mounted. On the solder surface of the printed wiring board 241, surface mount components among the electronic components constituting the power supply circuit are mounted. However, the input connector 242 and the control connector 244 are mounted on one end in the longitudinal direction of the printed wiring board 241, and the output connector 243 is mounted on the other end in the longitudinal direction of the printed wiring board 241. As shown in Figs. 5 to 7, the case 240 is formed into a long box shape by a metal plate material. The case 240 accommodates the printed wiring board 241 inside so that the input connector 242, the output connector 243, and the control connector 244 are exposed. The power supply unit 24 is screwed to the front end of the upper surface 2202 of the mounting plate 220 so that the longitudinal direction of the case 240 coincides with the left-right direction.

[0034] The functional unit 25 has a printed wiring board, a housing 250 for accommodating the printed wiring board, and an input terminal block 251 (see FIG. 5). The input terminal block 251 is electrically connected to a signal line 150 drawn from the second terminal block 15. Electronic components are mounted on the printed wiring board to configure a control circuit. A control cable 2440 is drawn from the functional unit 25. A plug connector 2441 attached to the tip of the control cable 2440 is connected to a control connector 244 of the power supply unit 24. The control circuit is configured to convert, for example, a control signal input to the input terminal block 251 via the signal line 150 into a control signal corresponding to the power supply unit 24. However, the functional unit 25 may be configured to convert a control signal (wireless signal) mediated by radio waves into an electric signal. The housing 250 is attached to the unit cover 23 (see FIGS. 5 to 7).

[0035] The mounting spring 26 is composed of a torsion coil spring having a coil portion 260, two arms, and a terminal portion 263. The longer of the two arms is called the first arm 261, and the shorter arm is called the second arm. The first arm 261 has a hook piece 264, a first arm 265, and a second arm 266. The first arm 265 protrudes from the terminal of the coil portion 260 in the radial direction of the coil portion 260. However, multiple points (for example, two points) in the longitudinal direction of the first arm 265 are bent in the same direction (downward) (see FIG. 6). The hook piece 264 is formed in a U-shape when viewed from the front-rear direction, and is connected to the tip of the first arm 265 at one end in the longitudinal direction and to the tip of the second arm 266 at the other end in the longitudinal direction (see FIG. 5). The rear end of the second arm 266 is connected to the terminal portion 263. However, multiple points (for example, two points) in the longitudinal direction of the second arm 266 are bent in the same direction (downward). The terminal portion 263 protrudes from the rear end of the second arm 266 approximately parallel to the hook piece 264.

[0036] 5, the unit cover 23 has a flat portion 230, a curved portion 231, three first mounting portions 232, a second mounting portion 233, a first retaining portion 234, and a second retaining portion 235. The flat portion 230, the curved portion 231, the three first mounting portions 232, the second mounting portion 233, the first retaining portion 234, and the second retaining portion 235 are integrally formed from a metal plate such as a zinc steel plate. The unit cover 23 is provided so as to cover the upper surface 2202 of the mounting plate 220 of the mounting member 22.

[0037] The flat portion 230 is formed in a flat plate shape and is aligned along the upper surface 2202 of the mounting plate 220 of the mounting member 22. A curved portion 231 is connected to the rear end of the flat portion 230 (the lower end in FIG. 5).

[0038] The curved portion 231 is curved so as to protrude upward from the rear end of the flat portion 230. However, the front half of the curved portion 231 curves gently as it moves away from the flat portion 230, while the rear half of the curved portion 231 curves sharply downward from the apex of the curved portion 231 (see FIG. 6). ). The curved portion 231 also has a rectangular opening 2310. The opening 2310 is formed in the curved portion 231 at a position corresponding to the case 240 of the power supply unit 24, that is, so as to expose the case 240. Therefore, heat generated by the power supply unit 24 can be released to the outside (upward) of the curved portion 231 through the opening 2310. In the power supply unit 24, the input connector 242, the output connector 243, and the control connector 244, which are arranged so as to be exposed from the case 240, are covered by the curved portion 231 of the unit cover 23. This protects the input connector 242, the output connector 243, and the control connector 244, which are conductive parts.

[0039] The three first mounting parts 232 are provided at the front end (upper end in FIG. 5) of the flat part 230, the right end (left end in FIG. 5) of the flat part 230, and the rear end of the curved part 231. The three first mounting parts 232 have almost the same configuration. Each of the first mounting parts 232 has a first support part 2321 and a second support part 2322 (see FIG. 6). The first support part 2321 is formed in a narrow plate shape (see FIG. 5). The first support part 2321 is inserted into the coil part 260 of the mounting spring 26 and can support the coil part 260 rotatably around the axis of the coil part 260. The second support part 2322 is formed in a flat plate shape and protrudes downward from the edge of the flat part 230. The second support part 2322 has a hole 2323 penetrating in the thickness direction (see FIG. 6). The hole 2323 is formed to a size that allows the terminal portion 263 of the mounting spring 26 to be inserted therethrough. The second support portion 2322 is capable of supporting the terminal portion 263 inserted through the hole 2323. Of the three first mounting portions 232, the mounting spring 26 is attached to each of two first mounting portions 232 that face each other in the front-rear direction with the curved portion 231 in between.

[0040] The second attachment portion 233 is configured by cutting and raising a portion of the flat portion 230. The second attachment portion 233 is configured to support the functional unit 25 by being hooked onto the housing 250 of the functional unit 25 (see FIGS. 5 to 7).

[0041] The first retaining portion 234 is provided at the left end of the flat portion 230 (the right end in FIG. 5). The first retaining portion 234 is configured by cutting and raising a part of the flat portion 230, and protrudes downward. The first retaining portion 234 corresponds to the claw portion 212 on the left side of the translucent cover 21, and overlaps with a part of the through hole 2204 through which the claw portion 212 is inserted. In other words, the first retaining portion 234 restricts the movement of the claw portion 212 in the through hole 2204 by blocking the remaining part of the inserted claw portion 212 in the through hole 2204 provided on the left side of the attachment plate 220. In this way, the first retaining portion 234 prevents the claw portion 212 from coming out of the through hole 2204.

[0042] The remaining three claws 212 are prevented from coming out of the through hole 2204 by three second retaining portions 235 (see FIG. 7). The second retaining portions 235 are formed in a flat plate shape and protrude downward from the end of the flat portion 230. In the flat portion 230, a part of the base end portion of the first support portion 2321 of each first mounting portion 232 overlaps with a part of the through hole 2204. The second retaining portions 235 protrude in the downward direction from the end of the part of the flat portion 230 that overlaps with the through hole 2204. The second retaining portions 235 restrict the movement of the claws 212 in the through hole 2204 by blocking the remaining part of the inserted claws 212 in the through hole 2204. In this way, the second retaining portions 235 prevent the claws 212 from coming out of the through hole 2204.

[0043] The unit cover 23 is fixed to the mounting plate 220 of the mounting member 22 in a state where the mounting springs 26 are attached to the two first mounting parts 232 facing each other in the front-rear direction with the curved part 231 in between, and the functional unit 25 is attached to the second mounting part 233. Here, a plurality of screw fastening parts 226 are provided on the upper surface 2202 of the mounting plate 220 (see Figs. 6 and 7). Each screw fastening part 226 has a truncated cone-shaped protrusion protruding upward from the upper surface 2202 of the mounting plate 220, and a female thread provided on the upper surface of the protrusion. The unit cover 23 is fixed to the mounting member 22 by screwing a plurality of fixing screws 227, which are respectively inserted into a plurality of screw insertion holes provided in the unit cover 23, into the female threads of the screw fastening parts 226 in a state where the unit cover 23 is placed on the plurality of screw fastening parts 226 (see Fig. 5). However, between the mounting plate 220 of the mounting member 22 and the flat portion 230 of the unit cover 23, a space equal to the height dimension of each screw fastening portion 226 is formed. In addition, between the mounting plate 220 of the mounting member 22 and the curved portion 231 of the unit cover 23, a space having a dimension in the vertical direction larger than the space between the mounting plate 220 and the flat portion 230 is formed. In other words, between the mounting plate 220 of the mounting member 22 and the unit cover 23, there is a gap equal to or larger than the height dimension of the screw fastening portion 226. Various cables such as an input cable 2420, an output cable 2430, and a control cable 2440 are arranged in this gap. In addition, various connectors such as an input connector 242, an output connector 243, a control connector 244, plug connectors 2421, 2431, and 2441, and receptacle connectors 43 and 2432 connected to various cables are arranged in this gap. Unit cover 23 covers these various cables and connectors from above, thereby protecting them from hanging bolts, etc. Note that receptacle connector 2422 attached to the end of input cable 2420 is connected to power plug connector 17, and is therefore pulled out from the gap between mounting member 22 and unit cover 23 (see FIG. 5).

[0044] Next, the process of assembling the light source unit 2 will be described.

[0045] First, an operator attaches two mounting boards 41, on which a plurality of LEDs 42 are mounted, to the lower surface 2201 of the mounting plate 220 of the mounting member 22 with the protective sheet 31 sandwiched between the mounting board 220 and the mounting board 220.

[0046] Next, the worker attaches the light-transmitting cover 21 to the mounting member 22 so as to cover the light source module 4. Specifically, the worker aligns the four claws 212 of the light-transmitting cover 21 with the positions of the four through holes 2204 of the mounting plate 220, and pushes in the light-transmitting cover 21 to insert the four claws 212 into the four through holes 2204. At this time, the seal 32 covering the through hole 2204 is broken by the claws 212. Then, the movable piece 314 is bent by the claws 212, and the movable piece 314 and a part of the seal 32 provided on the movable piece 314 are inserted into the through hole 2204 (see FIG. 9). The protective sheet 31 (movable piece 314) has flexibility and elasticity, and an elastic force that tries to restore the original shape acts on the bent movable piece 314, so that a part of the seal 32 provided on the movable piece 314 is pressed against the insertion piece 2121 of the claws 212 and adheres closely.

[0047] Furthermore, the locking pieces 2122 of the claw portions 212 are caught on the edges of the through holes 2204 in the mounting plate 220, so that the claw portions 212 are held in a state of being inserted through the through holes 2204. In this state, the seal 32 and the protective sheet 31 are sandwiched between the cover end portion 2111 of the light-transmitting cover 21 and the mounting plate 220, and the seal 32 is in an elastically deformed state and is in close contact with the cover end portion 2111 (see FIG. 10 ).

[0048] Next, the worker attaches the power supply unit 24 to the upper surface 2202 of the mounting plate 220 of the mounting member 22. Then, the unit cover 23 provided with the functional unit 25 and the mounting spring 26 is attached to the upper surface 2202 of the mounting plate 220. By attaching the unit cover 23 to the mounting plate 220, the claw portion 212 is prevented from coming out of the through hole 2204. In other words, the light-transmitting cover 21 is prevented from coming off the mounting member 22.

[0049] In this manner, in the light source housing 20 of the present embodiment, the protective sheet 31 and the seal 32, which are the protective member 3, are sandwiched between the cover end 2111 of the translucent cover 21 and the mounting plate 220 of the mounting member 22. This reduces the gap between the cover end 2111 and the mounting plate 220, suppressing the intrusion of foreign matter such as dust and insects into the space surrounded by the mounting member 22 and the translucent cover 21. This suppresses the shadow of foreign matter from being cast on the translucent cover 21 by the light emitted by the light source module 4.

[0050] In addition, in this embodiment, since the seal 32 is made of an elastic material, the seal 32 is elastically deformed to fill the gap between the cover end 2111 and the mounting plate 220, and the intrusion of foreign matter into the space surrounded by the mounting member 22 and the translucent cover 21 is further suppressed. In this embodiment, since the seal 32 is made of foamed resin, it can be elastically deformed with a relatively weak force. In addition, the seal 32 is provided on the translucent cover 21 side with respect to the protective sheet 31. Therefore, the seal 32 can be elastically deformed so as to follow the cover end 2111, and the gap between the cover end 2111 and the mounting plate 220 becomes smaller. In addition, even if the translucent cover 21 expands or contracts due to heat or the like, the seal 32 elastically deforms following the expansion and contraction of the translucent cover 21, so that the gap between the cover end 2111 and the mounting plate 220 can be filled.

[0051] Moreover, the protective sheet 31 is provided with slits 313 at positions corresponding to the through holes 2204 through which the claws 212 of the translucent cover 21 are inserted, and the movable pieces 314 formed by the slits 313 are bent so as to follow the claws 212 inserted into the through holes 2204. The seal 32 provided on the movable piece 314 is pressed against the claws 212 by the elastic force of the bent movable piece 314. This allows the seal 32 and the movable piece 314 to block the through holes 2204 through which the claws 212 are inserted, and the intrusion of foreign matter into the space surrounded by the mounting member 22 and the translucent cover 21 through the through holes 2204 is suppressed. Moreover, since the protective sheet 31 is provided with a plurality of slits 313, it becomes easier to make the movable pieces 314 follow the claws 212, and the intrusion of foreign matter into the space surrounded by the mounting member 22 and the translucent cover 21 through the through holes 2204 is further suppressed. In addition, the plurality of slits 313 allows the movable piece 314 to follow the claw portion 212 even if the protective sheet 31 and the light-transmitting cover 21 are misaligned with respect to the mounting member 22. Therefore, the intrusion of foreign matter into the space surrounded by the mounting member 22 and the light-transmitting cover 21 via the through hole 2204 is further suppressed.

[0052] In addition, the protective sheet 31 covers the mounting member 22 except for the through hole 2203 through which the receptacle connector 43 of the light source module 4 is inserted and the screw hole for attaching the mounting board 41 to the mounting member 22. In other words, the protective sheet 31 covers the mounting member 22 except for the holes through which objects such as connectors and screws need to pass. That is, the protective sheet 31 has a first portion 3101 located between the cover end 2111 and the mounting member 22, and a second portion 3102 located between the mounting board 41 and the mounting member 22 (see FIG. 4). In this embodiment, a hole 2205 formed by a cut-and-raised portion for reinforcement, a screw hole 2206 not used for attaching the unit cover 23, and a circular through hole 2207 are formed in the portion of the mounting member 22 facing the mounting board 41. These holes are covered by the second portion 3102 of the protective sheet 31. This prevents foreign matter from entering the space surrounded by the mounting member 22 and the light-transmitting cover 21 via a hole provided in the mounting member 22 through which no object has passed.

[0053] Furthermore, when assembling the light source unit 2, the protective sheet 31 on which the seal 32 is provided in advance can be sandwiched between the mounting board 41 and the attachment member 22. Therefore, when assembling the light source unit 2, the work of attaching the seal 32 to a predetermined position is not required, and the number of work steps can be reduced. Furthermore, it is easier to provide the seal 32 on the protective sheet 31 than on the attachment member 22, which is heavier than the protective sheet 31, and the cover end 2111 of the light-transmitting cover 21, which has a smaller arrangement space than the protective sheet 31.

[0054] Next, the work of installing the lighting fixture 1 on the ceiling will be described. First, a worker performing the installation work inserts the power cable 16 and the signal cable 18 into the power supply hole 110 and the signal hole 111 of the main body 11, respectively, and then attaches the main body 11 to the ceiling by tightening a nut on the hanging bolt inserted into the bolt insertion hole 112. The worker also connects the power cable 16 drawn from the power supply hole 110 to the first terminal block 14, and connects the signal cable 18 drawn from the signal hole 111 to the second terminal block 15.

[0055] Next, the worker attaches the body cover 12 to the body 11. The worker pulls the first arm 131 of one of the four hook springs 13 of the body 11 downward, and hooks the tip of the first arm 131 to one of the four hooks 125. The worker hooks the tips of the first arms 131 of the remaining three hook springs 13 to the hooks 125 corresponding to each of the hook springs 13, one by one, in order. Then, with the tips of the first arms 131 of the four hook springs 13 hooked to the four hooks 125, the worker lifts the body cover 12 upward so as to approach the body 11. The first arms 131 of each hook spring 13 are displaced (rotated) upward while still hooked to each hook 125. When the lower edge of the main body 11 hits the upper surface of the first part 121 of the main body cover 12, the connected state between the main body 11 and the main body cover 12 is maintained by the spring force of the four hook springs 13 hooked onto the four hook portions 125.

[0056] The fixture body 10 is attached to the ceiling in the above-described manner. Next, a procedure for attaching the light source unit 2 to the fixture body 10 will be described.

[0057] The worker inserts the hook piece 264 of the front mounting spring 26 into the through hole 124 provided in the front protruding wall 123, and hooks the hook piece 264 on the edge of the through hole 124 to temporarily hold the light source unit 2 in the fixture body 10. The worker performs wiring work between the power line 140 of the first terminal block 14 and the signal line 150 of the second terminal block 15 and the power supply unit 24 while the light source unit 2 is temporarily held in the fixture body 10. After completing the wiring work, the worker inserts the first arm 261 of the rear mounting spring 26 into the through hole 124 provided in the rear protruding wall 123, and then lifts up the light source unit 2 to fit it in the opening 120 of the main body cover 12. When the light source unit 2 is fitted in the opening 120, the first arm 261 of each mounting spring 26 hooks on the edge of each through hole 124 of the front and rear protruding walls 123 (see FIG. 11). As a result, the light source unit 2 is supported on the fixture body 10 (body cover 12) by the spring force of the two mounting springs 26. Through the above-mentioned procedure, the installation work of the lighting fixture 1 is completed (see Figs. 11 to 13).

[0058] In the above example, the seal 32 is made of foamed resin, but is not limited to this and may be made of other materials such as silicone resin or the same resin material as the protective sheet 31.

[0059] In the above-mentioned example, the protective member 3 includes the protective sheet 31 and the seal 32, but the present invention is not limited thereto. A modified example of the light source casing 20 will be described with reference to Figs. 14A and 14B. The light source casing 20 of this modified example differs from the above-mentioned protective member 3 in that the protective member 3X includes only the protective sheet 31. The basic configuration of the light source casing 20 of this modified example is common to the above-mentioned light source casing 20, and common components are denoted by the same reference numerals and will not be illustrated or described as appropriate.

[0060] The protective sheet 31 is provided with a curved portion 315 that is bent in one direction along the entire circumference. As shown in FIG. 14A, when the protective sheet 31 is attached to the lower surface 2201 of the mounting plate 220 of the mounting member 22, the curved portion 315 separates the entire circumference of the edge from the lower surface 2201 of the mounting plate 220. Then, as shown in FIG. 14B, when the light-transmitting cover 21 is attached to the mounting member 22, the cover end 2111 comes into contact with the protective sheet 31, and the curved portion 315 is stretched so that the end of the protective sheet 31 approaches the mounting plate 220. That is, the protective sheet 31 has a curved portion 315 that is bent so that the first portion 3101 located between the mounting member 22 and the cover end 2111 of the light-transmitting cover 21 comes into contact with the cover end 2111. The protective sheet 31 has flexibility and elasticity, and the curved portion 315 stretched by the cover end 2111 comes into contact with the cover end 2111 due to an elastic force that attempts to restore the original shape. This prevents foreign matter from entering the space surrounded by the mounting member 22 and the light-transmitting cover 21 through the gap between the cover end 2111 and the mounting plate 220 .

[0061] Furthermore, in the lighting fixture 1 of this embodiment, the light source unit 2 to be combined with the fixture body 10 is not limited to the light source unit 2 described above. For example, the light source unit 2X described below can also be combined with the fixture body 10. The basic configuration of the light source unit 2X is common to the light source unit 2. Therefore, in the following description of the light source unit 2X, components common to the light source unit 2 described above are denoted by the same reference numerals, and illustrations and descriptions thereof will be omitted as appropriate.

[0062] 15 to 17, the light source unit 2X has a hook member 27 having a portion protruding from the left edge of the mounting member 22 to the outside of the mounting member 22. The hook member 27 has a flat plate portion 270 and a wide portion 271. However, the flat plate portion 270 and the wide portion 271 are integrally formed from a metal plate such as a galvanized steel plate.

[0063] The flat plate portion 270 is formed in a generally rectangular shape. The wide portion 271 protrudes downward from one of the four sides (the left side in FIG. 15) of the flat plate portion 270. The length dimension of the wide portion 271 in the longitudinal direction is greater than the length dimension of the flat plate portion 270 along the longitudinal direction of the wide portion 271. In other words, the wide portion 271 has protrusions 272 at both ends in the longitudinal direction thereof that protrude outward from both ends of the flat plate portion 270 in the longitudinal direction.

[0064] Approximately half of the flat plate portion 270 in the short-side direction (left-right direction in FIG. 15) of the hook member 27 is attached to the upper surface of the mounting plate 220 of the mounting member 22. The flat plate portion 270 is fixed to the mounting plate 220 so as to be sandwiched between the mounting plate 220 and the flat portion 230 of the unit cover 23 (see FIG. 16). Furthermore, the power supply unit 24 is attached to the remaining half of the flat plate portion 270 in the short-side direction. In other words, by attaching the power supply unit 24 to the upper surface of the flat plate portion 270, it is made less susceptible to the effects of heat radiated from the light source module 4 in the lit state.

[0065] In the light source unit 2X, the attachment spring 26 is attached only to the first attachment portion 232 at the right end (the left end in FIG. 16) of the three first attachment portions 232 of the unit cover 23 (see FIG. 16).

[0066] Next, a procedure for attaching the light source unit 2X to the fixture body 10 will be described.

[0067] The worker inserts the wide portion 271 of the hook member 27 into the gap between the upper end of the left protruding wall 123 and the bottom surface of the main body 11 through the opening 120, and then hooks the protrusions 272 on both sides of the wide portion 271 onto the protruding pieces 126 on both ends of the left protruding wall 123. As a result, as shown in FIG. 18, the light source unit 2X is temporarily hung on the fixture main body 10. The worker performs wiring work between the power line 140 of the first terminal block 14 and the signal line 150 of the second terminal block 15 and the power supply unit 24 while the light source unit 2 is temporarily hung on the fixture main body 10. After completing the wiring work, the worker inserts the first arm 261 of the mounting spring 26 into the through hole 124 provided in the right protruding wall 123, and then lifts up the light source unit 2 to fit it in the opening 120 of the main body cover 12. When the light source unit 2 is placed in the opening 120, the first arm 261 of the mounting spring 26 is hooked on the edge of the through-hole 124. Also, the hook member 27 moves in a direction away from the opening 120, and is hooked on the left protruding wall 123 (see FIG. 19). As a result, the light source unit 2X is supported on the fixture body 10 (main body cover 12) by one mounting spring 26 and the hook member 27. Through the above-mentioned procedure, the installation work of the lighting fixture 1 is completed.

[0068] In the above example, the light source housing 20 and the fixture body 10 are configured separately, but the present invention is not limited to this, and the light source housing 20 and the fixture body 10 may be configured as one unit. In this case, the light source unit 2 (2X) including the light source housing 20 configured as one unit with the fixture body 10 and attached to the ceiling, and the light source module 4 housed in the light source housing 20 functions as a lighting fixture.

[0069] <Summary> The light source housing (20) according to the first embodiment includes an attachment member (22), a light-transmitting cover (21), and a protective member (3, 3X). The attachment member (22) has a light source module (4) attached to one surface (lower surface 2201) of the attachment member (22). The light-transmitting cover (21) has a bottom portion (210) facing the one surface (2201) and a peripheral wall portion (211) protruding from the periphery of the bottom portion (210) toward the attachment member (22), and is attached to the attachment member (22) so as to cover the one surface (2201). The protective member (3, 3X) is sandwiched between the attachment member (22) and a cover end portion (2111) that is an end portion of the peripheral wall portion (211) facing the attachment member (22). The protective member (3, 3X) also has a protective sheet (31) that is flexible and at least a part of which is located between the cover end portion (2111) and the attachment member (22).

[0070] According to this embodiment, the protective sheet (31) reduces the gap between the cover end (2111) and the mounting member (22), thereby preventing foreign matter from entering the space surrounded by the mounting member (22) and the translucent cover (21). This prevents the shadow of the foreign matter from being cast on the translucent cover (21) by the light emitted by the light source module (4).

[0071] In the light source housing (20) according to the second embodiment, in the first embodiment, the protective sheet (31) has a first portion (3101) and a second portion (3102). The first portion (3101) is located between the mounting member (22) and the cover end portion (2111). The second portion (3102) is located between the mounting member (22) and the light source module (4).

[0072] According to this embodiment, when the mounting member (22) has holes (2205, 2206, 2207) at the portion facing the light source module (4), the holes (2205, 2206, 2207) can be covered with the second portion (3102) of the protective sheet (31). This prevents foreign matter from entering the space surrounded by the mounting member (22) and the light-transmitting cover (21) through the holes (2205, 2206, 2207) of the mounting member (22).

[0073] In the housing (20) for a light source according to the third aspect, in the first or second aspect, the translucent cover (21) further has a claw portion (212) protruding from the cover end portion (2111). The claw portion (212) is hooked on the edge of the through hole (2204) through the through hole (2204) provided in the attachment member (22). The protective sheet (31) is provided with a slit (313) at a portion corresponding to the through hole (2204).

[0074] According to this aspect, the protective sheet (31) can be bent so as to follow the claw portion (212) inserted into the through hole (2204), and entry of foreign matter into the space surrounded by the attachment member (22) and the translucent cover (21) through the through hole (2204) is suppressed.

[0075] In the housing (20) for a light source according to the fourth aspect, in the third aspect, a plurality of slits (313) are provided in the protective sheet (31) at a portion corresponding to the through hole (2204).

[0076] According to this aspect, it becomes easier to make the protective sheet (31) follow the claw portion (212), and entry of foreign matter into the space surrounded by the attachment member (22) and the translucent cover (21) through the through hole (2204) is further suppressed.

[0077] In the housing (20) for a light source according to the fifth aspect, in any one of the first to fourth aspects, the protective member (3) further has a seal (32) provided on the protective sheet (31). The seal (32) is sandwiched between the cover end portion (2111) and the attachment member (22) together with the protective sheet (31).

[0078] According to this aspect, the gap between the cover end portion (2111) and the attachment member (22) can be made smaller, and entry of foreign matter into the space surrounded by the attachment member (22) and the translucent cover (21) is further suppressed.

[0079] In the housing (20) for a light source according to the sixth aspect, in the fifth aspect, the seal (32) is provided on the protective sheet (31) on the side of the translucent cover (21).

[0080] According to this embodiment, it becomes easier to bring the seal (32) into contact with the cover end (2111), and intrusion of foreign matter into the space surrounded by the mounting member (22) and the light-transmitting cover (21) is further suppressed.

[0081] In the light source casing (20) according to the seventh embodiment, in the sixth embodiment, the seal (32) is an elastic member having elasticity, and elastically deforms to come into close contact with the cover end (2111).

[0082] According to this embodiment, even if the light-transmitting cover (21) is deformed, the seal (32) is elastically deformed following the deformation of the light-transmitting cover (21) and comes into close contact with the cover end (2111). Therefore, intrusion of foreign matter into the space surrounded by the mounting member (22) and the light-transmitting cover (21) is further suppressed.

[0083] In the light source casing (20) according to the eighth embodiment, the seal (32) is made of foamed resin in the seventh embodiment.

[0084] According to this embodiment, a soft seal (32) having relatively high elasticity can be used, and the gap between the cover end (2111) and the mounting member (22) can be made smaller, thereby further preventing foreign matter from entering the space surrounded by the mounting member (22) and the translucent cover (21).

[0085] The configurations according to the second to eighth aspects are not essential for the light source casing (20) and can be omitted as appropriate.

[0086] A light source unit (2, 2X) according to a ninth aspect includes the light source housing (20) of any of the first to eighth aspects, and a light source module (4) housed in the light source housing (20). The light source module (4) includes a mounting board (41) attached to an attachment member (22), and a solid-state light source (LED 42) mounted on the mounting board (41).

[0087] According to this embodiment, intrusion of foreign matter into the space surrounded by the mounting member (22) and the light-transmitting cover (21) in the light source housing (20) is suppressed.

[0088] A lighting fixture (1) according to a tenth aspect includes the light source unit (2, 2X) of the ninth aspect and a fixture body (10) that supports the light source unit (2, 2X).

[0089] According to this embodiment, the mounting member (22) and the light-transmitting cover (21) in the light source housing (20) ) and thus prevents foreign matter from entering the space surrounded by the barrier. [Explanation of symbols]

[0090] 1 Lighting equipment 10. Equipment body 20 Light source housing 21 Translucent cover 210 Bottom 211 Peripheral wall section 2111 Cover end 212 Claw part 22 Mounting material 2201 Bottom surface (one side) 2204 Through hole 3,3X Protective material 31 Protective Sheet 3101 Part 1 3102 Part 2 313 Slit 32 Seal 4 Light Source Module 41 Mounting board 42 LED (solid light source)

Claims

1. a mounting member on one surface of which the light source module is mounted; a light-transmitting cover that has a bottom portion facing the light source module and a peripheral wall portion protruding from the bottom portion toward the mounting member and is attached to the mounting member so as to cover the light source module; A protective member, The light-transmitting cover is a cover end portion of the peripheral wall portion on the light source module side; a claw portion provided at an end portion of the cover, The mounting member has a through hole corresponding to the claw portion, The protective member is sandwiched between the cover end portion and the mounting member, the protective member has a seal at least a portion of which is located between the cover end and the mounting member; When viewed from a plan view in a direction in which the claw portion passes through the through hole, the seal overlaps with the through hole. A housing for a light source.

2. The seal has a narrow portion corresponding to the through hole.

2. The light source housing according to claim 1.

3. The seal is an elastic member having elasticity and elastically deforms to come into close contact with the end of the cover.

3. The light source housing according to claim 1 or 2.

4. The seal is made of foamed resin.

4. The light source housing according to claim 3.

5. A light source housing according to any one of claims 1 to 4, a light source module accommodated in the light source housing; The light source module includes: A mounting board attached to the attachment member; A solid-state light source mounted on the mounting substrate. A light source unit characterized by:

6. The light source unit according to claim 5 , A fixture body supporting the light source unit. A lighting fixture characterized by:

Images