lighting fixtures

Abstract

To improve the workability of attaching work of a seal member.SOLUTION: A lighting fixture A1 is equipped with a light source unit that has an LED, a fixture body 1 that is formed in a cylindrical shape to store the light source unit, and a seal member 6 that seals a clearance between the fixture body 1 and the light source unit. The seal member 6 has a first contacting portion that contacts with the fixture body 1, a second contacting portion that contacts with the light source unit, and one or more projecting portions 63 that project out from the first contacting portion toward the fixture body 1. The fixture body 1 has one or more insertion holes 13 in which the projecting portions 63 are inserted. The projecting portions 63 have hook claws 64 hooked to edges of the insertion holes 13 in the fixture body 1.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to a lighting fixture, and more particularly to a lighting fixture with a seal member. [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 (hereinafter referred to as the conventional example) is a so-called downlight. The conventional example comprises a lighting fixture body that holds an LED module, and a power supply unit that is disposed on top of the lighting fixture body and turns on the LED module. The conventional example is attached to a building material such as a ceiling board by embedding the power supply unit and most of the lighting fixture body into embedding holes provided in the building material.

[0003] In addition to the LED module, the lamp body includes a pair of mounting springs, an LED holder, a first reflector, a shade, an O-ring, and a second reflector. The O-ring is formed from a synthetic rubber sheet material, for example, and is positioned between the inner periphery of the second reflector and the periphery of the shade. The O-ring prevents air from passing between the second reflector and the shade, thereby ensuring airtightness of the interior space. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-210880 Summary of the Invention [Problem to be solved by the invention]

[0005] Incidentally, the O-ring (sealing member) in the above conventional example is formed in a circular ring shape and is inserted into a circular groove provided in the second reflector, and is attached to the lighting fixture body by attaching the shade to the second reflector via the first reflector.

[0006] On the other hand, with the above-described conventional structure, it is difficult to improve the workability of the O-ring (sealing member) installation work.

[0007] An object of the present disclosure is to provide a lighting fixture that can improve the workability of attaching a sealing member. [Means for solving the problem]

[0008] A lighting fixture according to one aspect of the present disclosure includes a light source unit having a light source, a cylindrical fixture body that houses the light source unit, and a sealing member that seals a gap between the fixture body and the light source unit. The sealing member has a first contact portion that contacts the fixture body, a second contact portion that contacts the light source unit, and one or more protrusions that protrude from the first contact portion toward the fixture body. The fixture body has one or more insertion holes through which the protrusions are inserted. The protrusions have hooks that hook onto edges of the insertion holes in the fixture body. [Effects of the Invention]

[0009] The lighting fixture of the present disclosure has the advantage of being able to improve the workability of the sealing member installation work. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a perspective view of a lighting fixture according to an embodiment of the present disclosure, viewed obliquely from below. [Figure 2] FIG. 2 is a perspective view of the lighting fixture as viewed obliquely from above. [Figure 3] FIG. 3 is an exploded perspective view of the lighting fixture. [Figure 4] FIG. 4 is a half cross-sectional view of the lighting fixture. [Figure 5] FIG. 5 is an exploded perspective view of a lamp body in the lighting fixture. [Figure 6]Fig. 6A is a front view of the sealing member in the lighting fixture of the same, Fig. 6B is a bottom view of the sealing member of the same, Fig. 6C is a right side view of the sealing member of the same, and Fig. 6D is a cross-sectional view taken along line X1-X1 of Fig. 6A. [Figure 7] FIG. 7 is a cross-sectional view of the lighting fixture with some parts omitted. [Figure 8] FIG. 8 is a perspective view of a modified example of the sealing member in the lighting fixture. [Figure 9] FIG. 9 is a cross-sectional view of a modified example of the sealing member of the same embodiment, with some parts omitted. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, lighting devices according to embodiments of the present disclosure will be described in detail with reference to the drawings. However, the drawings described in the following embodiments are schematic diagrams, and the ratios of the sizes and thicknesses of the components do not necessarily reflect the actual dimensional ratios. Note that the configurations described in the following embodiments are merely examples of the present disclosure. The present disclosure is not limited to the following embodiments, and various modifications are possible depending on the design, etc., as long as the effects of the present disclosure can be achieved.

[0012] (1) Overview of the lighting fixture according to the embodiment The lighting fixture A1 of the embodiment comprises a light source unit 3 having a light source (LED 30), a cylindrical fixture body 1 that houses the light source unit 3, and a sealing member 6 that seals the gap between the fixture body 1 and the light source unit 3.

[0013] The sealing member 6 has a first contact portion 61 that contacts the fixture body 1, a second contact portion 62 that contacts the light source unit 3, and one or more protrusions 63 that protrude from the first contact portion 61 toward the fixture body 1.

[0014] The device body 1 has one or more insertion holes 13 through which the protrusions 63 are inserted. The protrusions 63 have hooking claws 64 that hook onto the edges of the insertion holes 13 in the device body 1.

[0015] Thus, in the lighting fixture A1 according to the embodiment, the sealing member 6 is attached to the fixture body 1 by inserting the protrusion 63 into the insertion hole 13 provided in the fixture body 1 and hooking the hook 64 of the protrusion 63 onto the edge of the insertion hole 13 in the fixture body 1. In other words, in the lighting fixture A1 according to the embodiment, the sealing member 6 can be attached to the fixture body 1 by itself without using another member, thereby improving the workability of attaching the sealing member 6.

[0016] (2) Details of the lighting fixture according to the embodiment A lighting fixture A1 according to this embodiment (hereinafter simply referred to as lighting fixture A1) is a downlight that is installed so as to be recessed into the ceiling of an indoor facility, such as a commercial facility, hospital, nursing home, or lodging facility. As shown in FIGS. 1 to 4 , the lighting fixture A1 includes a fixture body 1, a lamp body 2, a sealing member 6, a holding member 7, and three mounting fixtures 8.

[0017] (2-1) Device body The device body 1 has a cylindrical portion 10 having a bottom and a ring-shaped frame portion 11 that protrudes outward from the lower end of the cylindrical portion 10 around the entire circumference of the lower end of the cylindrical portion 10. The cylindrical portion 10 and the frame portion 11 are integrally formed by, for example, drawing a metal plate material. However, the cylindrical portion 10 and the frame portion 11 may also be formed separately and then joined together by an appropriate method such as welding.

[0018] A circular opening 14 is provided at the bottom of the cylindrical portion 10 (see FIG. 4). Three protrusions 15 are provided on the periphery of the upper surface of the bottom of the cylindrical portion 10 (see FIG. 2). Each protrusion 15 is formed in an arc shape. The three protrusions 15 are arranged at equal intervals along the circumferential direction of the bottom of the cylindrical portion 10.

[0019] Three mounting portions 12 are provided on the circumferential surface (side surface) of the cylindrical portion 10 (see FIG. 2). Each mounting portion 12 has a pair of insertion pieces 120 and a locking groove 121. The pair of insertion pieces 120 are formed in a hook shape (L-shape) when viewed in the axial direction (up-down direction) of the cylindrical portion 10. The pair of insertion pieces 120 face each other with a gap between them along the circumferential direction of the cylindrical portion 10. The pair of insertion pieces 120 are formed by cutting out a part of the cylindrical portion 10 (see FIG. 2).

[0020] The locking groove 121 of each mounting portion 12 is provided between a pair of insertion pieces 120 on the circumferential surface of the cylindrical portion 10 (see FIG. 2). The locking groove 121 is formed in a rectangular shape by cutting and raising a part of the cylindrical portion 10 toward the inside of the cylindrical portion 10 (see FIG. 2).

[0021] (2-2) Light body The lighting body 2 has a light source unit 3 and a support block 4. The lighting body 2 is housed in the fixture main body 1 (see FIGS. 3 and 4).

[0022] (2-2-1) Light source unit The light source unit 3 includes an LED 30, a lens 31, a holder 32, a lens cover 33, and a unit body 34 (see FIGS. 3 to 5). The LED 30 is a COB (Chip on Board) white LED for illumination. The light-emitting surface of the LED 30 (the surface from which illumination light is emitted) is circular.

[0023] The lens 31 has a disk-shaped base 310, a plurality of cylindrical lenses 311 formed on one surface (upper surface) of the base 310, and a Fresnel lens 312 formed on the other surface (lower surface) of the base 310. The plurality of cylindrical lenses 311 are arranged side by side with their axes parallel to each other (see FIG. 4).

[0024] The holder 32 holds the LED 30 and the lens 31. The holder 32 has a cylindrical peripheral wall 320, a truncated conical bottom wall 321 protruding upward from the inner peripheral surface of the peripheral wall 320, a mounting base 322 protruding from the center of the bottom wall 321 in a truncated conical shape, and a wiring portion 323 (see FIGS. 4 and 5). The peripheral wall 320, the bottom wall 321, the mounting base 322, and the wiring portion 323 are integrally formed as a molded body of a synthetic resin material such as polybutylene terephthalate. The LED 30 is supported by the holder 32 so as to cover a window 3220 opening on the upper surface of the mounting base 322. The lens 31 is supported by the holder 32 so as to cover an opening at the lower end of the peripheral wall 320. The wiring portion 323 holds three electric wires (a positive electric wire, a negative electric wire, and a ground wire) of the power cable C1. These three electric wires are electrically connected to the LED 30 inside the holder 32.

[0025] The unit body 34 is made of a metal material and has a cylindrical shape with a bottom. A part of the holder 32 (bottom wall 321 and mounting base 322) and the LED 30 are housed inside the unit body 34. A base 340 that protrudes toward the inside of the unit body 34 is provided at the center of the bottom surface (top surface) of the unit body 34. The base 340 comes into contact with the back surface of the LED 30 held by the holder 32. In other words, heat generated by the LED 30 is conducted from the base 340 to the entire unit body 34 and dissipated. In addition, an insertion hole 341 through which a part of the wiring portion 323 of the holder 32 is inserted is provided at an end of the bottom surface of the unit body 34 (see FIG. 5). The unit body 34 and the holder 32 are joined by screws.

[0026] The lens cover 33 forms the outer shell of the light source unit 3. The lens cover 33 has a main portion 330, an edge portion 331, ribs 332, a reflecting portion 333, and a pair of bosses 334. The main portion 330, the edge portion 331, the ribs 332, the reflecting portion 333, and the pair of bosses 334 are integrally formed as a molded body made of synthetic resin material.

[0027] The main portion 330 is formed in the shape of a spherical shell, with the portion sandwiched between a first plane including the center of the spherical shell and a second plane parallel to the first plane cut away. In other words, the outer peripheral surface of the main portion 330 is spherical. The edge portion 331 is formed in the shape of a combination of a portion of a ring and a truncated cone and is connected to the lower end of the main portion 330. The reflecting portion 333 is formed in the shape of a truncated cone and protrudes upward from the lower end of the edge portion 331 and toward the inside of the edge portion 331. The rib 332 is formed in the shape of a cylinder cut away by a plane inclined relative to the axis and protrudes upward from the upper end of the main portion 330. The pair of bosses 334 are each formed in a cylindrical shape and are integrally formed with the main portion 330 so as to extend upward along the inner peripheral surface of the edge portion 331. The pair of bosses 334 are positioned opposite each other across the reflecting portion 333.

[0028] (2-2-2) Support block The support block 4 has a fixed member 40, a first movable member 41, a second movable member 42, and four shaft portions 43 (see FIG. 5).

[0029] The fixing member 40 has a rectangular fixing piece 400 and a pair of support pieces 401 that rise from both ends of the fixing piece 400 in the thickness direction (upward) of the fixing piece 400. Each of the pair of support pieces 401 is provided with an internal thread 402. The fixing piece 400 and the pair of support pieces 401 are integrally formed into a U-shape by bending a single rectangular metal plate.

[0030] The fixing member 40 is fixed to the unit body 34 by fastening the fixing piece 400 to the upper surface of the unit body 34 with two mounting screws 404. Furthermore, a screw insertion hole 403 is provided at each end of the fixing piece 400 in the longitudinal direction. A fixing screw 44, which is a tapping screw, is inserted into each of the two screw insertion holes 403. These two fixing screws 44 are threaded into two bosses 334 of the lens cover 33, one each, through holes (not shown) provided in the bottom surface of the unit body 34. In other words, the fixing member 40 is also fixed to the lens cover 33.

[0031] The first movable member 41 has a first main piece 410, a pair of first leg pieces 411, and a pair of second leg pieces 412. The first main piece 410 is formed in the shape of a rectangular flat plate. The pair of first leg pieces 411 are each formed in the shape of a rectangular flat plate, and extend downward from both ends of the first main piece 410 in the longitudinal direction in the thickness direction (downward) of the first main piece 410. The pair of second leg pieces 412 are each formed in the shape of a rectangular flat plate, and extend downward from both ends of the first main piece 410 in the width direction in the thickness direction (downward) of the first main piece 410. The first main piece 410, the pair of first leg pieces 411, and the pair of second leg pieces 412 are integrally formed by bending a single rectangular metal plate.

[0032] A rectangular insertion groove 414 is provided at the center of the first main piece 410 in the longitudinal direction and on both ends of the first main piece 410 in the lateral direction. Each first leg piece 411 is provided with a circular first shaft hole 413. Each second leg piece 412 is provided with a circular second shaft hole 415.

[0033] The first movable member 41 is attached to the fixed member 40 by two shafts 43 so as to be able to swing relative to the fixed member 40. Each shaft 43 is composed of a shoulder screw 430, a plain washer 431, and a wave washer 432. The pair of first leg pieces 411 of the first movable member 41 are respectively arranged outside the pair of support pieces 401 of the fixed member 40. The shoulder screw 430 of the shaft 43 is inserted into the first shaft hole 413 of the first leg piece 411 via the wave washer 432 and the plain washer 431, and is screwed into the internal thread 402 of the support piece 401. Here, the cylindrical portion 4300 of the shoulder screw 430 is fitted into the first shaft hole 413, so that the first movable member 41 is attached to the fixed member 40 so as to be able to swing relative to the fixed member 40 around the cylindrical portion 4300 of the shoulder screw 430 as an axis.

[0034] The second movable member 42 has a second main piece 420 formed in the shape of a rectangular flat plate, and a pair of third leg pieces 421 formed in the shape of a rectangular flat plate and extending downward from both ends of the second main piece 420 in the thickness direction (downward) of the second main piece 420. The second main piece 420 and the pair of third leg pieces 421 are integrally formed by bending a single rectangular metal plate. A circular screw insertion hole 423 is provided at one end of the second main piece 420 in the longitudinal direction. A female screw 422 is provided at the lower end of each third leg piece 421.

[0035] The second movable member 42 is attached to the first movable member 41 by two shaft portions 43 so as to be able to swing relative to the first movable member 41. The pair of third leg pieces 421 of the second movable member 42 are inserted one by one into a pair of insertion grooves 414 formed in the first main piece 410 of the first movable member 41, and are disposed inside the pair of second leg pieces 412 of the first movable member 41. The shoulder screw 430 of the shaft portion 43 is inserted into the second axial hole 415 of the second leg piece 412 via a wave washer 432 and a plain washer 431, and is screwed into the internal thread 422 of the third leg piece 421. Here, the cylindrical portion 4300 of the shoulder screw 430 is fitted into the second axial hole 415, so that the second movable member 42 is attached to the first movable member 41 so as to be able to swing relative to the first movable member 41, with the cylindrical portion 4300 of the shoulder screw 430 as an axis.

[0036] (2-3) Holding member The holding member 7 rotatably holds the support block 4 (light body 2) relative to the fixture body 1. The holding member 7 has a holding plate 70, three pressing portions 71, and a fixing screw 72, as shown in FIGS.

[0037] The holding plate 70 is formed into a disk shape from a metal plate material. A rectangular insertion hole 701 is provided in the center of the holding plate 70. A female screw 700 is provided on the periphery of the holding plate 70 at a position adjacent to the insertion hole 701 along the longitudinal direction of the insertion hole 701. A circular cable insertion hole 702 is also provided in the holding plate 70 at a position adjacent to the insertion hole 701 along the lateral direction of the insertion hole 701.

[0038] The second main piece 420 of the second movable member 42 is inserted into the insertion hole 701 of the holding plate 70 from below the holding plate 70. Then, a fixing screw 72 is inserted into the screw insertion hole 423 of the second main piece 420 arranged on the holding plate 70, and the fixing screw 72 is screwed into the internal thread 402 of the holding plate 70. As a result, the holding plate 70 and the support block 4 are joined by the screw (see FIGS. 2 and 4).

[0039] The retaining plate 70 is held down by three holding portions 71 and attached to the upper surface of the cylindrical portion 10 of the instrument body 1. Each of the three holding portions 71 is composed of a shoulder screw 710 and a plain washer 711. The shoulder screw 710 is screwed, via the plain washer 711, into a threaded hole provided near the protrusion 15 on the upper surface of the cylindrical portion 10. However, a gap equal to the height of the protrusion 15 is created between the upper surface of the cylindrical portion 10 and the lower surface of the plain washer 711. The peripheral portion of the retaining plate 70 is sandwiched in the gap between the upper surface of the cylindrical portion 10 and the lower surface of the plain washer 711, so that the retaining plate 70 is rotatably attached to the upper surface of the cylindrical portion 10 of the instrument body 1 (see FIGS. 2 to 4).

[0040] Here, three hemispherical positioning protrusions 16 are provided at equal intervals on the upper surface of the cylindrical portion 10, concentrically with the three screw holes for the shoulder screws 710. These three positioning protrusions 16 can prevent misalignment between the center of the holding plate 70 and the center of the upper surface of the cylindrical portion 10 (see FIGS. 2 to 4). A power cable C1 is inserted through the cable insertion hole 702 of the holding plate 70. One end of the power cable C1 is electrically connected to the wiring portion 323 of the light source unit 3. The other end of the power cable C1 is electrically connected to a power supply unit (not shown).

[0041] (2-4) Mounting fixture The lighting fixture A1 includes three fixtures 8. However, all three fixtures 8 have the same configuration.

[0042] 2, the mounting fixture 8 has a spring piece 80, an attachment piece 81, a retaining piece 82, a locking claw 83, and a pair of reinforcing parts 84. The spring piece 80, the attachment piece 81, the retaining piece 82, the locking claw 83, and the pair of reinforcing parts 84 are integrally formed from a metal suitable for a spring material, such as stainless steel.

[0043] The spring piece 80 is formed in a long, strip-like shape. The mounting piece 81 is formed in a rectangular shape. The retaining piece 82 is formed in a rectangular shape that is narrower than the mounting piece 81, and is connected to both the mounting piece 81 and the spring piece 80. However, the lower end of the retaining piece 82 connected to the spring piece 80 is curved in a U-shape. The locking claw 83 is formed in a hook shape by cutting out a portion of the mounting piece 81. The pair of reinforcing portions 84 are formed in a long, bathtub-like shape by drawing a portion of the mounting piece 81 and the retaining piece 82. This pair of reinforcing portions 84 suppresses deformation of the mounting piece 81 and the retaining piece 82 in the thickness direction.

[0044] (2-5) Sealing material The sealing member 6 has a first contact portion 61, a second contact portion 62, six protrusions 63, six hooking claws 64, a non-contact portion 65, and a flange portion 66 (see FIG. 6). The first contact portion 61, the second contact portion 62, the six protrusions 63, the six hooking claws 64, the non-contact portion 65, and the flange portion 66 are integrally formed from a flexible synthetic resin material such as silicone resin.

[0045] The first contact portion 61 is formed in a cylindrical shape. The flange portion 66 is formed in an annular shape and protrudes outward from the lower end of the first contact portion 61. The non-contact portion 65 is formed in a truncated cone shape and is connected to the upper end of the first contact portion 61, protruding upward from the upper end of the first contact portion 61. The second contact portion 62 is formed in an annular shape and protrudes inward from the upper end of the non-contact portion 65. The thickness of the non-contact portion 65 is greater than the thicknesses of the first contact portion 61 and the second contact portion 62 (see FIG. 6D).

[0046] Each of the six protrusions 63 is formed in a quadrangular prism shape. Each of the protrusions 63 has one triangular prism-shaped hooking claw 64. Each of the six protrusions 63 protrudes outward from the outer circumferential surface of the first contact portion 61 along the thickness direction of the first contact portion 61. The six protrusions 63 are arranged in pairs at equal intervals along the circumferential direction of the first contact portion 61.

[0047] The pair of protrusions 63 are arranged adjacent to each other along the circumferential direction of the first contact portion 61 at an interval that is narrower than the width of the mounting piece 81 of the mounting fixture 8 and wider than the width of the retaining piece 82. The hooking claws 64 of each pair of protrusions 63 protrude outward from the surface opposite the surface that the pair of protrusions 63 face along the circumferential direction of the first contact portion 61 (hereinafter, sometimes referred to as the facing surface). The facing surfaces of each pair of protrusions 63 are inclined upward and away from each other (see FIG. 6C). The angle of opening α between the facing surfaces of each pair of protrusions 63 is approximately 26 degrees.

[0048] (3) Assembly procedure of the lighting fixture according to the embodiment Next, the assembly procedure for the lighting fixture A1 will be described. However, in the following explanation, the procedure for attaching the sealing member 6 and the mounting fixture 8 to the fixture body 1 to which the light body 2 and the holding member 7 are attached will be described.

[0049] First, the worker inserts the seal member 6 into the cylindrical portion 10 of the device body 1. Then, the worker pinches one set of protrusions 63 with his fingers from the inner circumferential surface of the first contact portion 61 and displaces the set of protrusions 63 in a direction that brings them closer to each other. The worker inserts the set of protrusions 63 that he pinches and displaces with his fingers into each of the set of insertion holes 13 of the cylindrical portion 10. Then, when the worker releases his fingers from the set of protrusions 63, the hooking claws 64 of each of the set of protrusions 63 hook onto the outer edges of the set of insertion holes 13 (see FIG. 7). The worker then hooks the hooking claws 64 of the remaining two sets of protrusions 63 onto the outer edges of the insertion holes 13 in the same procedure. As a result, the sealing member 6 is attached to the fixture body 1 (the cylindrical portion 10) by the six hooking claws 64 being hooked onto the edges of the six insertion holes 13 in the cylindrical portion 10 of the fixture body 1. When the sealing member 6 is attached to the fixture body 1, a part of the lamp body 2 (the lens cover 33) is inserted into the opening of the second contact portion 62 of the sealing member 6 (see FIG. 4).

[0050] Next, the worker attaches the three mounting fixtures 8 one by one to the three mounting portions 12 of the appliance body 1. The worker inserts the retaining piece 82 of the mounting fixture 8 from top to bottom along the outer circumferential surface of the cylindrical portion 10, passing it between the pair of insertion pieces 120 of the mounting portion 12 and between the pair of protrusions 63. At this time, the worker can easily insert the retaining piece 82 between the pair of protrusions 63 because the opposing surfaces of the pair of protrusions 63 are inclined upward and away from each other.

[0051] When an operator inserts the retaining piece 82 between a pair of protrusions 63, the mounting piece 81 of the mounting fixture 8 is inserted into the space between the pair of insertion pieces 120 of the mounting portion 12 and the outer circumferential surface of the cylindrical portion 10, and the mounting piece 81 is supported by the pair of insertion pieces 120. Furthermore, when the locking claw 83 of the mounting fixture 8 is inserted into the locking groove 121 of the mounting portion 12, the upward movement of the mounting piece 81 is prohibited, and the mounting of the mounting fixture 8 to the mounting portion 12 of the appliance body 1 is completed.

[0052] (4) Features of the lighting fixture according to the embodiment As described above, in the process of attaching the sealing member 6 to the fixture body 1 of the lighting fixture A1, the sealing member 6 can be attached to the fixture body 1 without using any other member other than the sealing member 6. Therefore, the lighting fixture A1 can improve the workability of the attachment process of the sealing member 6.

[0053] Furthermore, when the mounting fixture 8 is attached to the mounting portion 12 of the appliance body 1, the retaining pieces 82 of the mounting fixture 8 are disposed between the pair of protrusions 63, and a portion of one pair of insertion holes 13 in the cylindrical portion 10 is blocked by the retaining pieces 82 (see FIG. 7). The "portion of the insertion holes 13" refers to a portion of the insertion holes 13 where no protrusions 63 are present when the hooking claws 64 are hooked on the edges of the insertion holes 13 (see FIG. 2).

[0054] Therefore, when the mounting fixture 8 is attached to the mounting portion 12 of the fixture body 1, part of the insertion hole 13 is blocked by the retaining piece 82, and therefore the protrusion 63 cannot move in a direction that moves the hooking claw 64 away from the edge of the insertion hole 13. In other words, the lighting fixture A1 can prevent the hooking claw 64 from coming off the edge of the insertion hole 13 without using any other member than the mounting fixture 8. As a result, the lighting fixture A1 can further improve the workability of the installation work of the sealing member 6.

[0055] When the seal member 6 is attached to the fixture body 1, the gap between the opening on the bottom surface of the cylindrical portion 10 and the lamp body 2 is sealed by the seal member 6. Specifically, a first contact portion 61 of the seal member 6 contacts the inner circumferential surface of the cylindrical portion 10, and a second contact portion 62 of the seal member 6 contacts the lens cover 33 of the lamp body 2.

[0056] Here, the lamp body 2 is configured to be rotatable and swingable relative to the fixture body 1. In other words, when the lamp body 2 rotates or swings relative to the fixture body 1, the lens cover 33 slides against the second contact portion 62 of the seal member 6, but the frictional force acting between the lens cover 33 and the second contact portion 62 is kept almost constant.

[0057] That is, the axis of rotation of the lamp body 2 overlaps with the center of the main part 330 of the lens cover 33, which has a circular shape when viewed in the axial direction (vertical direction) of rotation (see FIG. 4), so the distance from the axis of rotation to the outer circumferential surface of the main part 330 remains approximately constant even when the lamp body 2 rotates. Therefore, the frictional force acting between the lens cover 33 and the second contact part 62 when the lamp body 2 rotates remains approximately constant. Therefore, in the lighting fixture A1, even when the lamp body 2 is rotated, the second contact part 62 comes into contact with the outer circumferential surface of the lens cover 33, thereby preventing a deterioration in sealing performance.

[0058] The axis of oscillation of the lamp body 2 coincides with the center line of the pair of first shaft holes 413 and the center line of the pair of second shaft holes 415 of the first movable member 41. Moreover, in the support block 4, the center line of the pair of first shaft holes 413 and the center line of the pair of second shaft holes 415 intersect with the axis of rotation of the lamp body 2 at a single point, and an imaginary plane including the center line of the pair of first shaft holes 413 and the center line of the pair of second shaft holes 415 is parallel to the holding plate 70. Therefore, when the lamp body 2 oscillates around the center line of the pair of first shaft holes 413 and the center line of the pair of second shaft holes 415, the distance between each axis and the outer circumferential surface of the main portion 330 of the lens cover 33 is kept substantially constant (see the two-dot chain line in FIG. 4). Therefore, the frictional force acting between the lens cover 33 and the second contact portion 62 when the lamp body 2 oscillates is kept substantially constant. As a result, even when the lamp body 2 is swung, the second contact portion 62 and the outer peripheral surface of the lens cover 33 come into contact with each other, thereby preventing deterioration of the sealing performance of the lighting fixture A1.

[0059] Furthermore, since the thickness of the non-contact portion 65 of the sealing member 6 is greater than the thickness of each of the first contact portion 61 and the second contact portion 62, deformation of the non-contact portion 65 can be suppressed when the second contact portion 62 receives a frictional force from the lens cover 33, thereby suppressing a decrease in sealing performance.

[0060] (5) Modifications of the lighting fixture according to the embodiment Next, modified examples of the lighting fixture according to the embodiment will be described. However, the modified examples described below are characterized by the seal member 6. As shown in Fig. 8, the seal member 6 in the modified example has a plurality of protrusions 63 each having two hooking claws 64. In other words, a pair of protrusions 63 also has a hooking claw 64 formed on each of their opposing surfaces.

[0061] That is, the sealing member 6 in the modified example is attached to the fixture body by hooking the two hooking claws 64 onto the edges of an insertion hole provided in the cylindrical part of the fixture body. In other words, in the lighting fixture of the modified example, the sealing member 6 is less likely to come off the fixture body even if the insertion hole is not blocked by the retaining pieces of the mounting fixture.

[0062] Thus, in the lighting fixture of the modified example, the sealing member 6 is attached to the fixture body without using any other member than the sealing member 6. Therefore, the lighting fixture of the modified example can improve the workability of the work of attaching the sealing member 6.

[0063] 9, in the sealing member 6 of the modified example, the thickness of the non-contact portion 65 is smaller than the thickness of the first contact portion 61. In the lighting fixture of the modified example, by making the thickness of the non-contact portion 65 smaller than the thickness of the first contact portion 61, the second contact portion 62 can be easily deformed, and a decrease in sealing performance can be suppressed.

[0064] (6) Summary A lighting fixture (A1) according to a first aspect of the present disclosure includes a light source unit (3) having a light source (LED 30), a cylindrical fixture body (1) that houses the light source unit (3), and a sealing member (6) that seals a gap between the fixture body (1) and the light source unit (3). The sealing member (6) has a first contact portion (61) that contacts the fixture body (1), a second contact portion (62) that contacts the light source unit (3), and one or more protrusions (63) that protrude from the first contact portion (61) toward the fixture body (1). The fixture body (1) has one or more insertion holes (13) through which the protrusions (63) are inserted. The protrusions (63) have hooking claws (64) that hook onto the edges of the insertion holes (13) in the fixture body (1).

[0065] In the lighting fixture (A1) according to the first aspect, the sealing member (6) is attached to the fixture body (1) by inserting the protrusion (63) into the insertion hole (13) of the fixture body (1) and hooking the hook (64) of the protrusion (63) onto the edge of the insertion hole (13) in the fixture body (1). Therefore, in the lighting fixture (A1) according to the first aspect, the sealing member (6) can be attached to the fixture body (1) by itself without using another member, thereby improving the workability of attaching the sealing member (6).

[0066] A lighting fixture (A1) according to a second aspect of the present disclosure can be realized in combination with the first aspect. The lighting fixture (A1) according to the second aspect preferably further comprises one or more mounting fixtures (8) for mounting the fixture body (1) to a construction material. The mounting fixtures (8) are preferably detachably mounted to mounting portions (12) provided on the fixture body (1). The insertion holes (13) are preferably provided in the fixture body (1) near the mounting portions (12). The protrusions (63) are preferably prevented from coming off the insertion holes (13) by the mounting fixtures (8) attached to the mounting portions (12).

[0067] The lighting fixture (A1) according to the second aspect can prevent the hooking claws (64) from coming off the edge of the insertion hole (13) without using any other member than the mounting fixture (8). As a result, the lighting fixture (A1) according to the second aspect can further improve the workability of the installation work of the sealing member (6).

[0068] A lighting fixture (A1) according to a third aspect of the present disclosure can be realized by combining it with the lighting fixture (A1) according to the second aspect. In the lighting fixture (A1) according to the third aspect, it is preferable that the mounting fixture (8) prevents the protrusion (63) from coming off by partially blocking the insertion hole (13) when attached to the mounting portion (12).

[0069] The lighting fixture (A1) according to the third aspect can prevent the protrusion (63) from coming off without adding any special structure to the mounting fixture (8).

[0070] A lighting fixture (A1) according to a fourth aspect of the present disclosure can be realized by combining it with the third aspect. In the lighting fixture (A1) according to the fourth aspect, the hooking claw (64) is preferably formed to hook onto an edge of the insertion hole (13) other than the part of the insertion hole (13) that is blocked by the mounting fixture (8).

[0071] The lighting fixture (A1) according to the fourth aspect can prevent interference between the grappling claws (64) and the fixture (8).

[0072] A lighting fixture (A1) according to a fifth aspect of the present disclosure can be realized by combining it with any of the second to fourth aspects. In the lighting fixture (A1) according to the fifth aspect, the mounting fixture (8) is preferably attached to the mounting portion (12) by moving along the surface of the fixture body (1). The surface of the protrusion (63) facing the mounting portion (12) is preferably inclined along the direction in which the mounting fixture (8) moves.

[0073] The lighting fixture (A1) according to the fifth aspect can improve the workability when attaching the fixture (8) to the fixture body (1).

[0074] A lighting fixture (A1) according to a sixth aspect of the present disclosure can be realized by combining it with the second to fifth aspects. In the lighting fixture (A1) according to the sixth aspect, the fixture body (1) preferably has two insertion holes (13) near one mounting portion (12). The sealing member (6) preferably has two protrusions (63) that are inserted into the two insertion holes (13), respectively. A portion (retaining piece 82) of the mounting fixture (8) attached to the mounting portion (12) is preferably disposed between the two protrusions (63). The width of the portion (retaining piece 82) of the mounting fixture (8) is preferably narrower than the width of the portion (mounting piece 81) excluding the portion of the mounting fixture (8).

[0075] In the lighting fixture (A1) according to the sixth aspect, the width of a portion of the mounting fixture (8) that is disposed between the two protrusions (63) is narrowed, so that the distance between the two protrusions (63) can be narrowed.

[0076] A lighting fixture (A1) according to a seventh aspect of the present disclosure can be realized by combining it with any one of the first to sixth aspects. The lighting fixture (A1) according to the seventh aspect preferably includes a support block (4) that supports the light source unit (3) so that the light source unit (3) can swing relative to the fixture body (1).

[0077] The lighting fixture (A1) according to the seventh aspect can adjust the light distribution of the illumination light emitted from the light source unit (3) by swinging the light source unit (3) with the support block (4).

[0078] An illumination device (A1) according to an eighth aspect of the present disclosure can be realized by combining it with the seventh aspect. In the illumination device (A1) according to the eighth aspect, it is preferable that the light source unit (3) has an outer shell (lens cover 33) surrounding the light source. It is preferable that the surface of the outer shell that comes into contact with the second contact portion (62) is formed in an arc shape along the swing direction of the light source unit (3).

[0079] In the lighting fixture (A1) according to the eighth aspect, the second contact portion (62) can maintain contact with the surface of the outer casing even when the light source unit (3) swings.

[0080] A lighting fixture (A1) according to a ninth aspect of the present disclosure can be realized in combination with the seventh or eighth aspect. The lighting fixture (A1) according to the ninth aspect preferably includes a holding member (7) that rotatably holds the support block (4) relative to the fixture body (1).

[0081] The lighting fixture (A1) according to the ninth aspect can adjust the light distribution of the illumination light emitted from the light source unit (3) by rotating the support block (4) with the holding member (7).

[0082] A lighting device (A1) according to a tenth aspect of the present disclosure can be realized by combining it with the ninth aspect. In the lighting device (A1) according to the tenth aspect, it is preferable that the light source unit (3) has an outer shell surrounding the light source. It is preferable that the surface of the outer shell that comes into contact with the second contact portion (62) is formed in an arc shape along the direction in which the holding member (7) rotates.

[0083] In the lighting fixture (A1) according to the tenth aspect, the second contact portion (62) can maintain contact with the surface of the outer casing even when the light source unit (3) rotates.

[0084] A lighting device (A1) according to an eleventh aspect of the present disclosure can be realized by combining it with any of the seventh to tenth aspects. In the lighting device (A1) according to the eleventh aspect, the device body (1) is preferably formed in a cylindrical shape with a bottom. The light source unit (3) preferably has an outer shell surrounding the light source. The surface of the outer shell that comes into contact with the second contact portion (62) is preferably formed in a spherical shape.

[0085] In the lighting fixture (A1) according to the eleventh aspect, the second contact portion (62) can maintain contact with the surface of the outer casing even when the light source unit (3) swings or rotates.

[0086] A lighting fixture (A1) according to a twelfth aspect of the present disclosure can be realized by combining it with any of the first to eleventh aspects. In the lighting fixture (A1) according to the twelfth aspect, the sealing member (6) preferably has a non-contact portion (65) located between the first contact portion (61) and the second contact portion (62) and not in contact with the fixture body (1) or the light source unit (3). The thickness of the non-contact portion (65) is preferably greater than the thicknesses of the first contact portion (61) and the second contact portion (62).

[0087] The lighting fixture (A1) according to the twelfth aspect can suppress deformation of the non-contact portion (65) when the second contact portion (62) receives a frictional force from the outer shell, thereby suppressing deterioration of sealing performance. [Explanation of symbols]

[0088] A1 Lighting fixture 1. Device body 3 Light source unit 4 Support Blocks 6 Sealing material 7 Retaining member 8 Mounting fixture 12 Mounting part 13 Insertion hole 30 LEDs (light source) 33 Lens cover (outer shell) 61 1st contact part 62 2nd contact part 63 Protrusion 64 Grabbing claw 65 Non-contact part 81 Mounting piece 82 Stopper piece

Claims

1. a light source unit having a light source; a cylindrical fixture body that houses the light source unit; a sealing member that seals a gap between the fixture body and the light source unit; Equipped with The sealing member is a first contact portion that contacts the tool body; a second contact portion that contacts the light source unit; one or more protrusions protruding from the first contact portion toward the tool body; and The instrument body includes: The protrusion has one or more insertion holes through which the protrusion is inserted, The protrusion has a hook that hooks onto the edge of the insertion hole in the tool body. Lighting fixtures.

2. Further provided is one or more attachments for attaching the appliance body to a construction material; The attachment tool is detachably attached to an attachment portion provided on the appliance body, the insertion hole is provided in the device body near the attachment portion, The protrusion is prevented from coming out of the insertion hole by the mounting fixture attached to the mounting portion.

2. The lighting fixture of claim 1.

3. When the mounting fixture is attached to the mounting portion, the mounting fixture blocks a part of the insertion hole to prevent the protrusion from coming off.

3. The lighting fixture according to claim 2.

4. The hooking claw is formed to hook onto the edge of the insertion hole different from the part of the insertion hole that is closed by the mounting fixture.

4. The lighting fixture according to claim 3.

5. The attachment tool is attached to the attachment portion by moving along the surface of the appliance body, a surface of the protrusion facing the mounting portion is inclined along a direction in which the mounting tool moves; A lighting fixture according to any one of claims 2 to 4.

6. The tool body is provided with two insertion holes near one of the attachment portions, the sealing member has two protrusions, one of which is inserted into each of the two insertion holes; a part of the mounting tool attached to the mounting portion is disposed between the two protrusions; The width of the part of the mounting fixture is narrower than the width of the part of the mounting fixture excluding the part. A lighting fixture according to any one of claims 2 to 5.

7. a support block that supports the light source unit so that the light source unit can swing relative to the fixture body; A lighting fixture according to any one of claims 1 to 6.

8. the light source unit has an outer shell surrounding the light source, The surface of the outer shell that comes into contact with the second contact portion is formed in an arc shape along the direction in which the light source unit swings.

8. The lighting fixture of claim 7.

9. a holding member that rotatably holds the support block relative to the instrument body; 9. A lighting fixture according to claim 7 or 8.

10. the light source unit has an outer shell surrounding the light source, The surface of the outer shell that comes into contact with the second contact portion is formed in an arc shape along the direction in which the holding member rotates.

10. The lighting fixture of claim 9.

11. The tool body is formed in a cylindrical shape with a bottom, the light source unit has an outer shell surrounding the light source, The surface of the outer shell that comes into contact with the second contact portion is formed in a spherical shape. A lighting fixture according to any one of claims 7 to 10.

12. the sealing member has a non-contact portion located between the first contact portion and the second contact portion and not in contact with the fixture body and the light source unit, The thickness of the non-contact portion is greater than the thickness of each of the first contact portion and the second contact portion. A lighting device according to any one of claims 1 to 11.

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