Downlight

Abstract

To improve workability when an internal filter is exchanged or installed even in a downlight installed on a ceiling.SOLUTION: A downlight 10 includes: a light source part 5; and a device body 1 which houses the light source part 5 therein and has an opening surface 211 through which light from the light source part 5 passes. The device body 1 has a storage space S1 which is disposed between the opening surface 211 and the light source part 5 and may house a filter 6 which allows light from the light source part 5 to pass. The device body 1 has: a first portion 2 having the opening surface 211; a second portion 3 in which the light source part 5 is disposed and which may separate from the first portion 2; and a rail part 4 connecting the first portion 2 with the second portion 3. The rail part 4 holds the first portion 2 and the third portion 3 in a manner that these portions are movable between a separation position where the second portion 3 separates from the first portion 2 to open the storage space S1 and a closing position where the second portion 3 is located close to the first portion 2 to close the storage space S1.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a downlight. [Background technology]

[0002] Patent Document 1 discloses a conventional downlight. The downlight described in Patent Document 1 includes a body, a light source disposed in the body, a spread lens disposed in the light-emitting direction of the light source, and a cylindrical hood attached to the open end of the body. The spread lens is fitted and held in the hood. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Re-tabled publication 2016 / 171279 Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, for example, when the downlight of Patent Document 1 is attached to a ceiling, when replacing an internal filter such as a spread lens, it is necessary to remove the downlight from the ceiling, remove the hood from the body, and then replace the filter.

[0005] In most cases, the hood of this type of downlight is fixed to the body by screwing. Therefore, when replacing or installing a filter, the worker must completely remove the downlight from the ceiling and then remove the hood on the floor or a workbench. It is also possible to remove the hood from the body at a high place and replace or install the filter without removing the downlight from the ceiling, but the worker must be extremely careful not to drop the hood.

[0006] Therefore, in the conventional downlight, there is a problem that the workability is poor when replacing or attaching the internal filter when the downlight is installed on the ceiling.

[0007] The present invention has been made in consideration of the above circumstances, and aims to provide a downlight that can improve the ease of use when replacing or attaching an internal filter, even when the downlight is installed on a ceiling. [Means for solving the problem]

[0008] A downlight according to one aspect of the present invention includes a light source unit and a fixture body that houses the light source unit therein and has an opening surface through which light from the light source unit passes. The fixture body has a storage space that is arranged between the opening surface and the light source unit and is capable of storing a filter that passes light from the light source unit. The fixture body has a first part that has the opening surface, a second part in which the light source unit is arranged and is separable from the first part, and a rail part that connects the first part and the second part. The rail part holds the first part and the second part movably between a separated position where the second part is separated from the first part to open the storage space, and a close position where the second part is close to the first part to close the storage space. Effect of the Invention

[0009] The downlight of the above aspect according to the present invention has an advantage that the workability can be improved when replacing or attaching the internal filter even when the downlight is installed on the ceiling. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a perspective view of a downlight according to an embodiment of the present invention. [Diagram 2] FIG. 2 is an enlarged view of the periphery of the rail portion of the downlight according to the embodiment, showing the second portion in the proximal position. [Diagram 3]FIG. 3 is an enlarged view of the periphery of a rail portion of the downlight according to the embodiment, showing the second portion moving from the close position toward the separate position. [Figure 4] FIG. 4 is an enlarged view of the periphery of the rail portion of the downlight according to the embodiment, showing the second portion in the separated position. [Diagram 5] FIG. 5 is a cross-sectional view of the downlight according to the embodiment installed on a ceiling. [Figure 6] Fig. 6(A) is a cross-sectional view of the downlight according to the embodiment in a state where it is pulled down from the ceiling. Fig. 6(B) is a cross-sectional view of the downlight according to the embodiment in a state where it is pulled down from the ceiling and the second portion is moved to the separated position. [Figure 7] FIG. 7 is a front view of only the rail portion of a downlight according to a modified example. [Figure 8] 8(A) to (E) are front views of only the rail portion of a downlight according to a further modified example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] <Embodiment> The downlight 10 according to this embodiment is a lighting fixture that is installed, for example, so as to be embedded in the ceiling 8 of a building and irradiates light, for example, into a room. The downlight 10 may illuminate, for example, a floor surface, a wall surface, a decorative object, etc., as long as it irradiates light into a space below, or may be installed on a eaves ceiling to illuminate an outdoor area under the eaves. The downlight 10 includes a light source unit 5 (FIG. 2(B)) and a fixture body 1 that houses the light source unit 5 therein. The fixture body 1 has an opening surface 211 through which light from the light source unit 5 passes. The fixture body 1 also has a storage space S1 formed therein, as shown in FIG. 2(B). A filter 6 for passing light from the light source unit 5 can be stored in the storage space S1.

[0012] As shown in Fig. 1, the fixture body 1 has a first part 2 having an opening surface 211, a second part 3 in which a light source unit 5 is arranged, and a rail part 4 connecting the first part 2 and the second part 3. The first part 2 and the second part 3 are separable. The rail part 4 movably holds the first part 2 and the second part 3 between a close position (see Fig. 2) in which the second part 3 is close to the first part 2, and a separated position (see Fig. 4) in which the second part 3 is separated from the first part 2. As shown in Fig. 4, when the second part 3 is in the separated position with respect to the first part 2, the storage space S1 is opened.

[0013] Therefore, in the downlight 10 according to this embodiment, by positioning the second portion 3 at the separated position, the storage space S1 is opened, and therefore it is easy to attach or replace the filter 6. At this time, since the first portion 2 and the second portion 3 are connected by the rail portion 4, it is possible to prevent at least one of the second portion 3 and the first portion 2 from falling. Therefore, according to the downlight 10 according to this embodiment, even when the downlight 10 is installed on the ceiling 8, it is possible to improve the workability when replacing or attaching the internal filter 6.

[0014] For ease of explanation, the direction perpendicular to the ceiling surface 81 is defined as the "vertical direction" below, and the direction perpendicular to the vertical direction (i.e., the direction parallel to the ceiling surface 81) is defined as the "horizontal direction." In this embodiment, the ceiling surface 81 is described as being a horizontal plane. However, the definitions of these directions are given merely for the sake of explanation, and are not intended to specify the manner of use.

[0015] In this specification, "parallel" refers not only to two straight lines, surfaces, etc. (hereinafter referred to as "straight lines") that do not intersect even when extended, but also to two straight lines, etc. that intersect at an angle of 10° or less. Additionally, "orthogonal" refers to two straight lines, etc. that intersect at an angle of 90°±10°. However, even if two straight lines, etc. do not intersect directly, if they intersect when extended, they are included in the term "orthogonal."

[0016] (1 unit) 1, the fixture body 1 constitutes the outer shell of the downlight 10. As described above, the fixture body 1 includes the first portion 2 and the second portion 3 which are separable from each other, and the rail portion 4. In this embodiment, the first portion 2 includes a frame body 21 having an opening surface 211, and a cylindrical body 22 disposed between the frame body 21 and the second portion 3.

[0017] The frame 21 is a part that is attached to the ceiling 8 via a mounting fixture 7 (see FIG. 5). The frame 21 includes a hollow truncated cone-shaped cone body 210 and a flange 212 that protrudes outward from the outer periphery of the lower end of the cone body 210. The lower end surface of the cone body 210 includes an opening surface 211 through which light from the light source unit 5 is emitted. When the downlight 10 is installed on the ceiling 8, the frame 21 is arranged such that the flange 212 and the opening surface 211 are aligned along the lower surface of the ceiling 8 (hereinafter, referred to as the ceiling surface 81). The flange 212 may be arranged to face the ceiling surface 81, or the lower surface of the flange 212 may be arranged in a position that is flush with the ceiling surface 81 or higher.

[0018] The cylindrical body 22 is a member having a storage space S1 in which the filter 6 is stored. The cylindrical body 22 is formed in a cylindrical shape having openings on the upper and lower surfaces. The upper end of the frame 21 passes through the lower opening of the cylindrical body 22, and the cylindrical body 22 is attached to the frame 21 so as to be rotatable relative to the frame 21. A rotation axis J1 of the cylindrical body 22 relative to the frame 21 extends in the horizontal direction. However, the cylindrical body 22 may be attached to the frame 21 so as not to be rotatable relative to the frame 21. 2(B), a support protrusion 221 protruding radially inward is formed on the inner circumferential surface of the cylindrical body 22. The support protrusion 221 supports the filter 6. The storage space S1 in this embodiment refers to a space defined by an imaginary plane including the inner circumferential surface 222 of the cylindrical body 22, the upper opening surface of the cylindrical body 22, and the upper surface of the support protrusion 221.

[0019] The filter 6 is disposed in the storage space S1 so as to pass the light from the light source unit 5. Examples of the filter 6 include a lens 61, a honeycomb filter (honeycomb louver), and a color filter. Examples of the lens 61 include a plano-convex lens, a Fresnel lens, a color lens, a spread lens, and a lens with reduced transmittance (for example, 60% or less). The transmittance here refers to the transmittance for the peak wavelength of the light source unit 5.

[0020] The filter 6 is removably stored in the storage space S1. A user can select and store a desired filter 6 in the storage space S1. The filter 6 stored in the storage space S1 may be one sheet, or multiple sheets may be arranged in a stack. In addition, the filter 6 is preferably attached as an option, and for example, the filter 6 does not have to be stored in the storage space S1.

[0021] 1, the second portion 3 is a portion of the device body 1 that is disposed above the first portion 2. In this embodiment, the second portion 3 has a housing 31 and a heat sink 34 that is disposed at the upper end of the housing 31.

[0022] The housing 31 accommodates the light source unit 5 therein. The housing 31 includes a main body 311 and a main body ring 312 that is fitted into the lower end of the main body 311. The main body 311 is preferably formed in a cylindrical shape. The lower opening of the main body 311 is closed by a lens 36. The lens 36 is held at the lower end of the main body 312 by the main body ring 312.

[0023] The heat sink 34 dissipates heat from the light source unit 5. As shown in FIG. 1, the heat sink 34 includes a base 341 fixed to the upper end of the housing 31 and a plurality of heat dissipation fins 342 protruding from the base 341. The material of the heat sink 34 is not particularly limited, and may be, for example, an aluminum alloy, a copper alloy, a magnesium alloy, or a thermally conductive resin. The plurality of heat dissipation fins 342 are arranged radially around the central axis of the housing 31 as viewed from above. However, the plurality of heat dissipation fins 342 may be arranged so that they are all parallel to each other so as to be perpendicular to one of the lateral directions. In addition, the plurality of heat dissipation fins 342 are arranged in such a way that two different sizes of heat dissipation fins 342 are alternately arranged in the circumferential direction, but may all be the same size. In addition, the heat sink 34 may have any structural part that can increase the surface area and dissipate heat, and may have a structural part formed, for example, in a columnar, rod, block, or the like, instead of the plurality of fins 342.

[0024] The rail portion 4 holds the second portion 3 movably between a close position and a separated position relative to the first portion 2. In the downlight 10 according to this embodiment, in an installed state, the first portion 2 is fixed to the ceiling 8 and the second portion 3 is movable, but the second portion 3 may be fixed to the ceiling 8 and the first portion 2 may be movable. In other words, it is only necessary for the rail portion 4 to be able to hold the first portion 2 and the second portion 3 movably relative to each other.

[0025] The rail portion 4 includes a pair of rail members 41. On the other hand, the second portion 3 includes a pair of sliders 32 corresponding to the rail members 41, respectively.

[0026] The rail portion 4 preferably holds the second portion 3 so as to be movable parallel to the first portion 2 in the optical axis direction of the light source portion 5 (here, the up-down direction). The term "parallel movement" used here means that the second portion 3 moves without changing its posture relative to the first portion 2. However, "parallel movement" does not mean "no change in posture" in the strict sense, and slight changes such as a change in posture due to clearance between members fall within the category of "parallel movement".

[0027] The rail member 41 extends upward from the first portion 2. In this embodiment, a lower end of the rail member 41 is fixed to the cylindrical body 22, and the rail member 41 extends straight upward from the lower end. In addition, the rail member 41 is provided with ribs on both ends in the width direction of the flat plate portion, and is formed into a substantially C-shaped cross section.

[0028] The rail member 41 includes a slit 411 through which the slider 32 passes, and a plurality of locking holes 412, 413. As shown in FIG. 2(A), the longitudinal direction of the slit 411 is formed in a straight line and is parallel to the longitudinal direction of the rail member 41. The plurality of locking holes 412, 413 include a first locking hole 412 formed at a position corresponding to the close position, and a second locking hole 413 formed at a position corresponding to the separated position. Each of the locking holes 412, 413 protrudes from the slit 411 in a direction intersecting the longitudinal direction of the slit 411. The slit 411 and the locking holes 412, 413 do not necessarily have to be connected to each other.

[0029] At least a portion of the slider 32 is disposed within the slit 411, and moves along the slit 411. The slider 32 includes a slider protrusion 320 protruding from the outer surface of the housing 31, and a spring member 33 attached to the slider protrusion 320. The slider protrusion 320 preferably has two vertical surfaces 321 that are parallel to the up-down direction. The vertical surfaces 321 come into contact with the edges of the slit 411, which allows the second portion 3 to move stably.

[0030] The spring member 33 includes an attachment portion 331 attached to the protruding tip surface of the slider protrusion 320, a push-in portion 332 connected to the attachment portion 331, and a pair of locking projections 333 connected to the push-in portion 332. The attachment of the attachment portion 331 to the slider 32 is realized by, for example, screwing, pinning, riveting, a snap-fit ​​structure, welding, etc. The spring member 33 is a leaf spring, and for example, stainless steel, carbon tool steel, phosphor bronze, etc. are used.

[0031] Push-in portion 332 is formed in a generally U-shaped cross section, and protrudes outward beyond rail member 41 through slit 411. A gap is provided between push-in portion 332 and housing 31, and push-in portion 332 can be elastically displaced by being pressed inward from the outside.

[0032] The locking projection 333 has a connecting portion 335 connected to the pushing portion 332, and a plurality of projections 334 protruding from the connecting portion 335. The projections 334 protrude from the inside to the outside of the rail member 41, and can be fitted into the locking holes 412, 413. When the projections 334 are fitted into the locking holes 412, 413, the locking projections 333 are locked into the locking holes 412, 413, and movement of the second part 3 relative to the first part 2 is restricted.

[0033] Here, "locking" means that one member and another member come into contact in any one direction (e.g., upward), and as a result, movement in at least that direction (upward) is restricted. The one member and the other member may be, for example, a protrusion and a recess, or a protrusion and a protrusion, or a step and a step. Also, another member may be interposed between the one member and the other member.

[0034] When the pushing portion 332 is pushed into the slit 411, as shown in FIG. 3, the locking protrusion 333 moves in a direction approaching the housing 31 in conjunction with the movement of the pushing portion 332, and the locking state of the locking protrusion 333 with respect to the locking holes 412, 413 is released. In this state, when the second part 3 is moved toward the separated position, the second part 3 is separated from the first part 2. When the movement of the second part 3 is continued and the locking protrusion 333 moves to the position of the second locking hole 413, as shown in FIG. 4, the locking protrusion 333 is restored by the elastic force of the spring member 33, and the protrusion 334 is locked in the second locking hole 413, and the second part 3 is maintained in the separated position. When the second part 3 moves to the separated position, the storage space S1 is opened. Therefore, in this embodiment, it is easy for an operator to perform the work when attaching the filter 6 to the downlight 10. As a result, according to the downlight 10 of this embodiment, the workability when attaching the filter 6 can be improved.

[0035] The minimum distance L1 between the lower end of the second portion 3 at the separated position and the upper end of the first portion is preferably 5 mm or more, more preferably 10 mm or more, and even more preferably 18 mm or more. Meanwhile, the minimum distance L1 is preferably 40 mm or less, and more preferably 30 mm or less. By setting the distance L1 between the lower end of the second portion 3 and the upper end of the first portion to be 5 mm or more and 30 mm or less, the worker can easily attach or replace the filter 6 while minimizing the replacement space around the downlight 10 during replacement.

[0036] (Light source part 5) The light source unit 5 emits light. As shown in Fig. 2, the light source unit 5 according to this embodiment includes a substrate 51 and a plurality of LED light emitting elements 52 mounted on the substrate 51. The substrate 51 is attached to a base 341 of the heat sink 34. However, the light source unit 5 may be, for example, an HID lamp, a halogen lamp, an incandescent lamp, or the like.

[0037] A reflector 35 is disposed inside the housing 31 on the light-emitting side of the light source unit 5. Light from the light source unit 5 passes through the reflector 35, passes through the lens 36, passes through the filter 6, and is emitted from the opening surface 211 of the frame body 21. This enables the downlight 10 to illuminate the space below.

[0038] (Installation) The downlight 10 described above is attached to a ceiling 8 by a fixture 7, for example, as shown in Fig. 5. The fixture 7 comprises a mounting frame 71 formed in an annular shape, and a plurality of support brackets 72 protruding radially outward from the mounting frame 71. The tip of each support bracket 72 is bent toward the ceiling 8 (toward the ceiling board), and when the fixture 7 is pulled downward toward the ceiling 8, it gets caught on an upper corner of an installation hole 82 in the ceiling 8.

[0039] When the downlight 10 is attached to the fixture 7 and pulled down, at least a part of the downlight 10 is pulled down below the ceiling surface 81 as shown in Fig. 6(A). At this time, it is preferable that the entire downlight 10 is positioned below the ceiling surface 81. Note that the downlight 10 is preferably connected to the ceiling 8 by a wire so as not to fall during work.

[0040] While keeping the downlight 10 pulled down with one hand, the worker pushes the push-in portion 332 with the other hand to move the second portion 3 to the separated position as shown in Fig. 6(B). At this time, since the two push-in portions 332 of the rail portion 4 are located on a diagonal line (extension of the diameter) of the fixture body 1, the worker can push a pair of push-in portions 332 simultaneously with, for example, a first finger and a second finger. Then, the worker can move the second portion 3 upward in this state to position it at the separated position.

[0041] Since the second part 3 is maintained at the separated position, the second part 3 is prevented from unintentionally moving to the close position when the filter 6 is installed in the opened storage space S1. After that, the worker again pushes in the two pushing parts 332 to move the second part 3 to the close position, and then pushes up the downlight 10 toward the ceiling 8 and attaches it to the mounting fixture 7. This allows the filter 6 of the downlight 10 to be replaced or newly attached.

[0042] <Modification> The above embodiment is merely one of various embodiments of the present invention. The embodiment can be modified in various ways depending on the design, etc., as long as the object of the present invention can be achieved. Modifications of the embodiment are listed below. The modifications described below can be applied in appropriate combination.

[0043] In the above embodiment, the ceiling surface 81 is horizontal, but for example, the ceiling surface 81 may be inclined with respect to the horizontal plane.

[0044] The storage space S1 may be any space capable of storing the filter 6. In the above embodiment, the storage space S1 is formed inside the cylindrical body 22, but it may be formed in the frame 21 or in the housing 31 of the second part 3. Even if the storage space S1 is formed in the housing 31, it is sufficient that the filter 6 can be attached between the first part 2 and the second part 3.

[0045] In the above embodiment, the second part 3 is held in position at two points, the close position and the separated position, but it may be engaged in stages at three or more points, or it may be able to hold its position steplessly (i.e., at any position in the vertical direction).

[0046] In the above embodiment, the rail portion 4 is configured so that the second portion 3 is movable along the optical axis direction. However, for example, the second portion 3 may be configured so that it is movable in a direction intersecting the optical axis direction.

[0047] In the above embodiment, the rail portion 4 includes a plate-shaped rail member 41 having a slit 411, and the slider 32 is moved along the slit 411. However, for example, the rail member 41 may be formed in an axial shape, and the slider 32 may be movable along the rod-shaped rail member 41.

[0048] In the above embodiment, the locking holes 412, 413 are formed to protrude from the slit 411 in a direction intersecting the longitudinal direction of the slit 411, but may be spaced apart from the slit 411, as shown in FIG. 7. The locking holes 412, 413 may be configured as through holes penetrating the rail member 41, for example, as long as the protrusion 334 fits therein. With this configuration, the entire length of the slit 411 in the longitudinal direction can be brought into contact with the vertical surface 321 of the slider protrusion 320 between the close position and the separated position. This allows the second part 3 to move smoothly relative to the first part 2, and stable movement can be achieved.

[0049] The rail member 41 may have the configurations shown in, for example, Figs. 8(A) to (E). As shown in Fig. 8(A), the locking holes 412 and 413 may protrude from the slit 411 and have a circular tip. As shown in Fig. 8(B), the locking holes 412 and 413 may protrude from the slit 411 and have a sharp tip. As shown in Fig. 8(C), the locking holes 412 and 413 may be separated from the slit 411 and may be round holes, as in Fig. 7, or may be triangular holes or semicircular holes, as shown in Fig. 8(D). In Figs. 7 and 8(A) to (E), the configurations other than the rail member 41 may be the same as those in the above embodiment.

[0050] In the above embodiment, the procedure for attaching or replacing the filter 6 to the downlight 10 while it is attached to the mounting fixture 7 has been described. However, for example, the filter 6 may be attached to or replaced in a downlight 10 that has been removed from the mounting fixture 7.

[0051] Although the rail section 4 has two rail members 41 arranged on a diagonal line of the housing 31, for example, two slits 411 on a diagonal line may be formed in one rail member 41 having a semicircular cross section. In other words, the rail section 4 does not necessarily need to have a plurality of rail members 41.

[0052] In the above embodiment, the downlight 10 is attached to the ceiling 8 via the fixture 7, but the frame 21 may be attached directly to the ceiling 8.

[0053] <Summary> As described above, the downlight 10 according to the first embodiment includes the light source unit 5 and the fixture body 1 that houses the light source unit 5 therein and has an opening surface 211 through which light from the light source unit 5 passes. The fixture body 1 has a storage space S1 that is arranged between the opening surface 211 and the light source unit 5 and can store a filter 6 that passes light from the light source unit 5. The fixture body 1 has a first part 2 that has the opening surface 211, a second part 3 in which the light source unit 5 is arranged and which is separable from the first part 2, and a rail part 4 that connects the first part 2 and the second part 3. The rail part 4 holds the first part 2 and the second part 3 movably between a separated position where the second part 3 is separated from the first part 2 to open the storage space S1 and a close position where the second part 3 is close to the first part 2 to close the storage space S1.

[0054] According to this aspect, by positioning the second portion 3 at the separated position, the storage space S1 is opened, and therefore, it is easy to attach or replace the filter 6. At this time, since the first portion 2 and the second portion 3 are connected by the rail portion 4, it is possible to reduce the possibility that at least one of the second portion 3 and the first portion 2 falls. Therefore, according to the downlight 10 of this embodiment, even when the downlight 10 is installed on the ceiling 8, the workability when replacing or attaching the internal filter 6 can be improved.

[0055] In the downlight 10 of the second aspect, in the first aspect, the first portion 2 has a frame body 21 having an opening surface 211, and a tubular body 22 arranged between the frame body 21 and the second portion 3 and including a storage space S1.

[0056] According to this embodiment, by lowering a portion of the downlight 10 from the ceiling 8, the storage space S1 is likely to be located below the ceiling surface 81, which makes it easier to replace the filter 6.

[0057] In the downlight 10 according to the third aspect, in the first or second aspect, the storage space S1 is configured so as to be able to store a lens 61 as the filter 6.

[0058] According to this embodiment, for example, in the case where a plurality of lenses 61 with different transmittances are used as the lenses 61 to adjust the brightness in a room, the task of replacing the plurality of lenses 61 one by one in order can be easily performed while checking the actual brightness.

[0059] In the downlight 10 according to the fourth aspect, in any one of the first to third aspects, the rail portion 4 holds the second portion 3 so as to be movable parallel to the first portion 2 along the optical axis direction of the light source portion 5.

[0060] According to this embodiment, when the second portion 3 is positioned at the separated position, even if the gap between the first portion 2 and the second portion 3 is small, the filter 6 can be easily replaced.

[0061] In the downlight 10 according to the fifth embodiment, the rail section 4 has a pair of rail members 41 whose lower ends are fixed to the first section 2 and which include a slit 411 extending in the optical axis direction of the light source section 5. The second section 3 has a slider 32 which is fitted in the slit 411 and which is movable along the slit 411.

[0062] According to this embodiment, the movement of the second portion 3 relative to the first portion 2 tends to be stable.

[0063] In the downlight 10 according to the sixth embodiment, the rail portion 4 has locking holes formed at positions corresponding to the close position and the separated position in the fifth embodiment. The slider 32 has a locking protrusion 333 that is configured to be lockable in the locking hole and that restricts movement of the second portion 3 relative to the first portion 2 when locked in the locking hole, and a push-in portion 332 that operates in conjunction with the locking protrusion 333 and releases the locking state of the locking protrusion 333 from the locking hole by being pushed in.

[0064] According to this embodiment, the position of the second part 3 can be maintained relative to the first part 2 in both the separated position and the close position, and the second part 3 can be moved relative to the first part 2 simply by pushing the pushing part 332. Therefore, the worker can replace or attach the filter 6 with a simple operation. [Explanation of symbols]

[0065] 10 Downlight 1. Equipment body 2 First part 21 Frame 211 Opening surface S1 Storage Space 3 Second part 32 Slider 33 Spring parts 332 Push-in section 333 Locking protrusion 4 Rail section 41 Rail parts 411 Slit 412 First locking hole (locking hole) 413 Second locking hole (locking hole) 5 Light source section 6 Filters 61 Lens

Claims

1. A light source unit; A fixture body that houses the light source unit therein and has an opening surface through which light from the light source unit passes; Equipped with The device body has a storage space that is arranged between the opening surface and the light source unit and is capable of storing a filter that transmits light from the light source unit, The instrument body includes: A first portion having the opening surface; a second portion in which the light source unit is disposed and which is separable from the first portion; a rail portion connecting the first portion and the second portion; having the rail portion movably holds the first portion and the second portion between a separated position where the second portion is separated from the first portion to open the storage space and a close position where the second portion is close to the first portion to close the storage space, Downlight.

2. The first portion is A frame having the opening surface; a cylindrical body disposed between the frame body and the second portion and including the storage space; having 2. The downlight according to claim 1.

3. The storage space is configured to be able to store a lens as the filter. The downlight according to claim 1 or 2.

4. the rail portion holds the second portion so as to be movable in parallel with the first portion along an optical axis direction of the light source portion, The downlight according to claim 1 or 2.

5. the rail portion has a pair of rail members whose lower ends are fixed to the first portion and which include a slit extending in the optical axis direction of the light source portion, The second portion has a slider that is fitted in the slit and is movable along the slit.

5. The downlight according to claim 4.

6. the rail portion has a locking hole formed at a position corresponding to the close position and the separated position, The slider includes: a locking protrusion configured to be lockable in the locking hole and configured to restrict movement of the second portion relative to the first portion when the locking protrusion is locked in the locking hole; a push-in portion that is linked to the locking projection and that is pushed in to release the locking state of the locking projection in the locking hole; having 6. The downlight according to claim 5.

Images