Recessed Lighting Fixtures

Abstract

To provide an embedded type lighting device which achieves good moldability while securing strength of a frame body.SOLUTION: An embedded type lighting device 1 includes: a lamp body part 2 having a light source; a frame part 3 supporting the lamp body part 2 and fitted in an embedded hole formed at a plate; and multiple attachment springs 4 attached to the frame part 3. The frame part 3 has: a first frame body 31; and a second frame body 32 fixed to an inner peripheral surface of the first frame body 31. The first frame body 31 has: a flange part 312 extending in an outer side direction of the embedded hole; and an erection part 311 erected from the inner side of the flange part 312 and facing a surface on which the embedded hole is formed. The erection part 311 and the second frame body 32 have concentric cylindrical shapes. A radial thickness of the erection part 311 is smaller than a radial thickness of the second frame body 32, and the erection part 311 and the flange part 312 are integrated.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to recessed lighting fixtures. [Background technology]

[0002] Recessed lighting fixtures that are recessed into recessed holes in a ceiling and fixed with a spring to irradiate light downward have been known for some time, and are disclosed, for example, in the following Patent Documents 1 and 2. Patent Document 1 discloses a technique for preventing the device body fixed to the inner frame from falling in a recessed lighting fixture that includes a metal outer frame that is attached to the recessed hole in the ceiling and a device body that is fixed to a metal inner frame that is fitted inside the outer frame.

[0003] Furthermore, Patent Document 2 discloses a technology for ensuring secure engagement between an outer frame and an inner frame in a recessed lighting fixture which includes an outer frame that is inserted into a recessed hole in the ceiling, a lamp body that is housed inside the outer frame, and an inner frame that is attached between the outer frame and the lamp body. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2005-268001 A [Patent Document 2] JP 2006-004653 A Summary of the Invention [Problem to be solved by the invention]

[0005] The metal outer frame of Patent Document 1 needs to have rails and notches to ensure secure engagement with the inner frame, and is generally made of aluminum die-casting. However, aluminum die-casting components are more expensive and heavier than pressed components, preventing cost and weight reduction in recessed lighting fixtures that are attached to the ceiling.

[0006] The outer and inner frames in Patent Document 2 are formed from synthetic resin, which reduces costs and makes them lighter than aluminum die-casting and makes them easier to mold, but has the problem of being more brittle than metal.

[0007] Thus, the frame needs to be both light and strong, but there is a trade-off between the two, making it difficult to achieve both. If the frame were made of thin metal sheet, instead of aluminum die-cast, to reduce weight, the strength would not be sufficient, and when the frame was attached to the ceiling board, the part of the frame where the spring was attached would be pressed strongly against the ceiling board, causing other parts to bend and creating a gap between the ceiling board and the frame. On the other hand, if the metal sheet was made thicker to ensure strength, the weight of the frame would increase, and the occurrence of molding defects would also increase.

[0008] In view of the above-mentioned problems, an object of the present invention is to provide a recessed lighting fixture that has good formability while ensuring the strength of the frame body. [Means for solving the problem]

[0009] In order to solve the above problems, a first aspect of the recessed lighting device of the present invention is a recessed lighting device comprising a luminaire having a light source, a frame portion supporting the luminaire and fitted into a recessed hole formed in a plate material, and a plurality of mounting springs attached to the frame portion, wherein the frame portion has a first frame body and a second frame body fixed to the inner surface of the first frame body.

[0010] A second aspect of the recessed lighting fixture of the present invention is the first aspect, wherein the first frame body has a flange portion extending toward the outside of the recessed hole, and the flange portion is fixed to the plate material by the force applied by the mounting spring.

[0011] A third aspect of the recessed lighting device of the present invention is the first aspect, wherein the first frame body has a first hole, the second frame body has a second hole at a position opposite to the first hole, and the device is provided with a fastener that fixes the first frame body and the second frame body at the first hole and the second hole.

[0012] A fourth aspect of the recessed lighting fixture of the present invention is the third aspect, wherein the mounting spring has a third hole, and the fixing device fixes the mounting spring and the frame portion at the third hole.

[0013] A fifth aspect of the recessed lighting fixture of the present invention is the second aspect, wherein the luminaire has a light distribution control section which controls the distribution of light emitted by the light source, the lower end of the second frame body is higher than the lower end of the first frame body, and the flange portion is adjacent to the lower end of the light distribution control section in the same plane.

[0014] A sixth aspect of the recessed lighting fixture of the present invention is the second aspect, wherein the first frame body has an erect portion that erects from the inside of the flange portion and faces the surface that forms the recessed hole, the erect portion has a plurality of horizontally elongated holes, and the mounting spring is inserted into the horizontally elongated holes.

[0015] A seventh aspect of the built-in lighting fixture according to the present invention is the sixth aspect, in which the first frame has a plurality of notches in the erected portion, and the mounting spring is inserted into the notches.

[0016] An eighth aspect of the recessed lighting fixture of the present invention is the sixth aspect, wherein the standing portion and the second frame body are concentric cylindrical, the radial thickness of the standing portion is thinner than the radial thickness of the second frame body, and the standing portion and the flange portion are integral.

[0017] A ninth aspect of the recessed lighting device of the present invention is the fifth aspect, wherein the first frame body has a first upright portion facing the surface forming the recessed hole, a first flange portion extending outward from a lower end of the first upright portion, a second upright portion extending downward from the first flange portion, and a second flange portion extending from the lower end of the second upright portion toward the outside of the recessed hole, the lower end of the second frame body is above the lower end of the first upright portion, an end of the light distribution control portion faces the first flange portion and the second upright portion, and the second flange portion is adjacent to the lower end of the light distribution control portion in the same plane.

[0018] A tenth aspect of the recessed lighting fixture of the present invention is the second aspect thereof, in which the mounting spring is formed of an elastic plate-like member and fixed to the first frame body and the second frame body at a predetermined position, and has a support portion that supports the lamp body portion above the position, and a fixing portion that fixes the flange portion to the plate material below the position. Effect of the Invention

[0019] According to the first aspect of the built-in lighting fixture of the present invention, by separately constructing the first frame body and the second frame body, it is possible to provide a built-in lighting fixture with better formability than a case where the frame part is integrally constructed while ensuring strength by the second frame body. In addition, if a thin metal plate is used as the first frame body, it becomes easier to mold and the design can be improved.

[0020] According to the second aspect of the recessed lighting fixture of the present invention, the frame can be fixed to the recessed hole by the flange and the mounting spring.

[0021] According to the third aspect of the built-in lighting fixture of the present invention, the fixing positions of the first frame and the second frame are determined, facilitating manufacture.

[0022] According to the fourth aspect of the embedded lighting fixture of the present invention, the fixing positions of the frame and the mounting spring are fixed, facilitating manufacture.

[0023] According to the fifth aspect of the recessed lighting fixture of the present invention, when the frame portion is fitted into the recessed hole, the second frame body is not visible, and the structural integrity can be maintained.

[0024] According to the sixth aspect of the built-in lighting fixture of the present invention, the position at which the mounting spring is attached can be fixed.

[0025] According to the seventh aspect of the embedded lighting fixture of the present invention, the position at which the mounting spring is attached can be fixed.

[0026] According to the eighth aspect of the built-in lighting fixture of the present invention, the first frame, which requires bending, can be made of a thin material, and the occurrence of molding defects can be suppressed. Furthermore, the strength deficiency of the first frame can be compensated for by the second frame.

[0027] According to the ninth aspect of the recessed lighting fixture of the present invention, it is possible to reliably prevent the second frame from being visible, and it is possible to maintain the structural integrity.

[0028] According to the tenth aspect of the recessed lighting fixture of the present invention, the member that supports the lamp body and the member that fixes the frame can be formed from the same material, thereby reducing the number of parts. [Brief description of the drawings]

[0029] [Figure 1] FIG. 1 is a bottom perspective view of a recessed lighting fixture according to an embodiment of the present invention; [Diagram 2] Schematic diagram showing a cross section of the recessed lighting fixture of FIG. [Diagram 3] Exploded perspective view of the frame [Figure 4] Enlarged cross-sectional view of the main part when the recessed lighting fixture is inserted into the recessed hole [Diagram 5] FIG. 11 is an enlarged cross-sectional view of a main part of a recessed lighting fixture according to a second embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0030] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Here, the vertical direction is defined as the Z direction, and two directions perpendicular to each other in a plane perpendicular to the Z direction are defined as the X direction and the Y direction. In other words, the XY plane is defined as a horizontal plane. However, when a lighting fixture is installed on a horizontal ceiling surface, the vertical direction of the lighting fixture is not the direction of gravity. Also, the direction extending from the Z axis into the horizontal plane is defined as the radial direction.

[0031] First Embodiment Fig. 1 is a bottom perspective view of a recessed lighting fixture 1 according to a first embodiment of the present invention, and Fig. 2 is a schematic diagram showing a cross section of the recessed lighting fixture 1. The recessed lighting fixture 1 is a so-called downlight that is recessed in a recessed hole provided in a ceiling or the like and irradiates light downward, and includes a lamp body 2 that irradiates light, a frame 3 that supports the lamp body 2 and is fitted into a recessed hole formed in a plate material such as a ceiling, and a plurality of mounting springs 4 that are attached to the frame 3 and fix the recessed lighting fixture 1 to the ceiling plate.

[0032] The lighting body 2 has a light source 21 that employs a light emitting element such as an LED (Light Emitting Diode) that emits light, a light distribution control unit 22 that controls the distribution of light emitted by the light source 21, a heat sink 23 that dissipates heat emitted by the light source 21, and a holding unit 24 that holds the light distribution control unit 22 and the heat sink 23 and is fixed to the frame unit 3.

[0033] The light distribution control unit 22 is composed of, for example, a lens 221 and a reflector 222, and controls the light emitted by the light source 21 to a desired light distribution. The lens 221 is approximately disk-shaped, is disposed below the light source 21 in the Z direction, and collects the light from the light source 21. The reflector 222 is cone-shaped with an opening in the Z direction, and is attached below the lens 221 in the Z direction to irradiate light in a desired direction. A lower end 223 of the reflector 222 expands slightly radially outward within the horizontal plane.

[0034] The heat sink 23 has a generally cylindrical outer shape, and includes a shaft 232 extending in the Z direction with a flat portion 231 on the lower side in the Z direction to which the light source 21 and the lens 221 are attached, and a plurality of heat dissipation fins 233 extending radially in a horizontal plane from the shaft 232. Here, the surface 234 of the heat dissipation fins 233 is formed in a wave shape, which allows the surface area to be increased, thereby contributing to improved heat dissipation performance.

[0035] The holding part 24 is a substantially cylindrical member extending in the Z direction, and integrally holds the reflector 222 and the heat sink 23 on the radially inner side. Specifically, it has a tube part 241 extending in the Z direction and an annular part 242 extending from one end of the tube part 241 toward the radially inner side of the tube, holds the heat sink 23 on the inner side of the tube part 241, and holds the upper end of the reflector 222 in the Z direction on the inner side of the annular part 242. In other words, the light source 21 and the lens 221 are attached to the heat sink 23, and the reflector 222 and the heat sink 23 are fixed to each other by the holding part 24, thereby being integrated as the lamp part 2.

[0036] Fig. 3 is an exploded perspective view of the frame 3, and Fig. 4 is an enlarged cross-sectional view of the main parts when the recessed lighting fixture 1 is fitted into the recessed hole. The frame 3 has a first frame body 31 having a substantially annular shape and fitted into the recessed hole in the ceiling, and a second frame body 32 provided on the inner peripheral surface of the first frame body 31. The frame 3 corresponds to a so-called outer frame that holds the lamp body 2.

[0037] The first frame 31 is a member having a flange 312 extending toward the outside of the embedding hole, and an erected portion 311 extending cylindrically along the Z direction facing the surface 51 that forms the embedding hole by erecting from the inside of the flange 312. The flange 312 is fixed to the embedding hole formed in the ceiling plate 53, which is a plate material, by the force applied by the mounting spring 4 described later. The flange 312 is slightly inclined upward in the Z direction from the lower end of the erected portion 311 toward the outside. This allows a smooth connection without creating a gap between the frame 3 and the exposed surface 52 of the ceiling, improving the design. The inner diameter of the flange 312 is formed to be approximately the same as the outer diameter of the lower end 223. As a result, when the lamp body 2 is fitted into the frame 3, the lower end 223 of the reflector 222 and the flange portion 312, which is the lower end of the first frame 31, are adjacent to each other in the same plane (horizontal plane), making the second frame 32 invisible and maintaining physical integrity.

[0038] The erected portion 311 has a plurality of rectangular horizontally elongated holes 315 (three in this embodiment) formed at equal intervals along the circumferential direction, and a circular first hole 316 is formed on the upper side of each horizontally elongated hole 315 in the Z direction, which fixes the mounting spring 4. The first frame 31 is formed by pressing an aluminum sheet metal having a thickness of about 0.6 mm, for example. This allows for lower costs and weight reduction compared to forming the frame by aluminum die casting, and further reduces the molding defect rate because processes such as gate cutting and deburring are not required. The first frame 31 may be made of resin.

[0039] The second frame 32 is a member fixed to the inner peripheral surface of the first frame 31 and reinforcing the first frame 31. Specifically, the second frame 32 is a cylindrical member that is concentric with the standing portion 311 and is provided along the inner peripheral surface of the standing portion 311. The lower end of the second frame 32 is located above the lower end of the first frame 31. Specifically, for example, the second frame 32 is formed lower than the height of the standing portion 311 and is fixed to the upper side of the inner peripheral surface of the standing portion 311. This does not prevent the lower end 223 of the reflector 222 and the lower end of the first frame 31 from being adjacent to each other in the horizontal plane. The radial thickness of the second frame 32 may be thicker than the radial thickness of the standing portion 311. The second frame 32 is formed by aluminum extrusion with a thickness of about 1.2 mm, for example, but may be resin molded.

[0040] By combining the second frame 32 with the first frame 31, the first frame 31, which requires bending, can be made of a thin material, and the occurrence of molding defects can be reduced. Furthermore, the second frame 32 can compensate for the lack of strength of the first frame 31, and the strength of the frame portion 3 can be ensured.

[0041] The second frame 32 has a notch 321 formed in a position facing the horizontally elongated hole 315 when combined with the first frame 31, and a circular second hole 322 formed in a position facing the first hole 316. The first frame 31 and the second frame 32 are fixed to each other together with a plate-like member 41 having an attachment spring 4.

[0042] The mounting spring 4 is formed of an elastic rectangular plate-like member 41, and is fixed to the first frame body 31 and the second frame body 32 at a predetermined position, and has a fixing part 42 that applies force to the frame part 3 in a direction from the ceiling board 53 toward the flange part 312 below that position, and a support part 43 that supports the lamp part 2 above that position, and a plurality of them (three in this embodiment) are attached to the frame part 3. The fixing part 42 and the flange part 312 sandwich the ceiling board 53 in the vertical direction, so that the frame part 3 can be fixed to the recessed hole, and ultimately the recessed lighting fixture 1 can be fixed to the ceiling.

[0043] A circular third hole 44 is formed in each of the multiple plate-like members 41 at the intermediate position, and the multiple plate-like members 41 are fixed to the inner peripheral surface of the second frame 32 by rivets 45, which are fasteners that fasten the first frame 31 and the second frame 32 at the first holes 316 and the second holes 322. In other words, the first frame 31, the second frame 32, and the multiple plate-like members 41 are fixed to each other by the multiple rivets 45.

[0044] The support parts 43 are bent toward the inside of the frame part 3 above the position of the rivet 45 of the plate-like member 41 in the Z direction, and are further bent toward the outside of the frame part 3 above that in the Z direction, thereby functioning as springs that apply force upward in the Z direction and inward in the radial direction. The multiple support parts 43 support the lamp part 2 so as not to move in the vertical and horizontal directions.

[0045] The plate-like member 41 also has a spring structure at a portion lower than the rivet 45 in the Z direction, and a plurality of such portions cooperate to function as the fixing portion 42 that fixes the frame portion 3 to the embedding hole. Specifically, the fixing portion 42 is bent toward the outside of the frame portion 3 at a position where the horizontally long hole 315 and the notch 321 of the second frame body 32 overlap, and is inserted into the horizontally long hole 315, and is bent toward the lower side in the Z direction at a position outside the frame portion 3 to function as a spring that applies a force downward in the Z direction and outward in the radial direction. In this way, if the fixing portion 42 and the support portion 43 are formed from the same material, the number of parts can be reduced. In addition, the horizontally long hole 315 can be provided to fix the position where the plate-like member 41 is attached.

[0046] When the recessed lighting fixture 1 is attached to a ceiling or the like, the flange 312 faces the exposed surface 52 of the ceiling in the Z direction at the edge 54 of the recessed hole. The flange 312 is slightly inclined upward in the Z direction as it moves radially outward. In addition, since the flange 312 and the lower end 223 of the reflector 222 are adjacent to each other in the horizontal plane, the boundary between the exposed surface 52 of the ceiling and the recessed lighting fixture 1 can be smoothly connected, improving the design.

[0047] <Second embodiment> In the first embodiment, the first frame 31 has the erected portion 311 and the flange portion 312, but the present invention is not limited to this. For example, as shown in Fig. 5, a first frame 31A may be provided instead of the first frame 31 shown in the first embodiment. Note that the same components as those in the above embodiment are denoted by the same reference numerals and their description will be omitted.

[0048] The first frame 31A is a member having a first standing portion 311A ​​extending cylindrically along the Z direction facing the surface forming the embedding hole, a first flange portion 313A extending radially outward from the lower end of the first standing portion 311A, a second standing portion 314A extending downward in the Z direction from the outside of the first flange portion 313A, and a second flange portion 312A extending radially outward from the lower end of the second standing portion 314A. The first flange portion 313A is formed to have a radial width that is approximately the same as or slightly shorter than the radial width of the lower end portion 223 of the reflector 222. The height of the second standing portion 314A in the Z direction is formed to be approximately the same as the plate thickness in the Z direction of the lower end portion 223 of the reflector 222. The second flange portion 312A is inclined slightly upward in the Z direction from the lower end portion of the second standing portion 314A toward the outer side in the radial direction.

[0049] The lower end of the second frame 32 is located above the lower end of the first erected portion 311A. As a result, when the lamp body 2 is fitted into the frame 3, the lower end 223 of the reflector 222 faces and abuts against the first flange 313A, which reliably prevents the second frame 32 from being visible and maintains its shape integrity.

[0050] <Modification> Although the embodiment of the recessed lighting device according to the present invention has been described above, the recessed lighting device exemplified can be modified as follows, and the present invention is not limited to the above-mentioned embodiment. For example, a notch opening downward in the Z direction may be formed instead of the horizontally elongated hole 315, or a horizontally elongated hole similar to the horizontally elongated hole 315 may be formed instead of the notch 321. This makes it possible to fix the position where the plate-like member 41 is attached. Also, for example, the first hole 316, the second hole 322, and the third hole 44 may be formed in any shape other than a circle. [Explanation of symbols]

[0051] 1. Recessed Lighting Fixtures 2 Light body part 21 Light source 22 Light distribution control section 223 Lower end 3 Frame 31,31A 1st frame 311 Standing section, 311A ​​1st standing section 312 Tsuba, 312A 2nd Tsuba 313A 1st collar part 314A 2nd standing section 315 Horizontal hole 316 Hole 1 32 Second frame 322 2nd hole 4 Mounting spring 41 Plate-shaped members 42 Fixed part 43 Support part 44 Hole 3 45 Rivet (fixture)

Claims

1. A lamp body having an LED light source and a cone-shaped reflector; A frame portion includes a support portion that supports the light body portion from below and is fitted into an embedding hole formed in a plate material such as a ceiling; a plurality of mounting springs attached to the frame portion; A recessed lighting fixture in which the light body portion is fitted into the frame portion, so that the light body portion and the frame portion are integrated together, The frame portion has a first frame body and a second frame body, The first frame body has a cylindrical upright portion, The second frame body includes a cylindrical portion fixed along an inner circumferential surface of the erected portion of the first frame body so as to reinforce the first frame body. Recessed lighting fixtures.

2. the first frame has a flange portion extending toward an outer side of the embedding hole, The flange is fixed to the plate by the force applied by the mounting spring.

2. The recessed lighting fixture of claim 1.

3. The first frame is provided with a first hole, The second frame has a second hole at a position opposite to the first hole, a fastener for fastening the first frame and the second frame through the first hole and the second hole; 2. The recessed lighting fixture of claim 1.

4. The mounting spring has a third hole, The fastener fastens the mounting spring and the frame portion through the third hole.

4. The recessed lighting fixture of claim 3.

5. The light body unit has a light distribution control unit that controls the distribution of light emitted by the light source, A lower end of the second frame is located above a lower end of the first frame, The flange is adjacent to the lower end of the light distribution control section in the same plane.

3. The recessed lighting fixture of claim 2.

6. The upright portion has a plurality of horizontally elongated holes, The mounting spring is inserted into the horizontally elongated hole.

3. The recessed lighting fixture of claim 2.

7. The first frame has a plurality of notches in the upright portion, The mounting spring is inserted into the notch.

7. The recessed lighting fixture of claim 6.

8. A radial thickness of the erected portion is smaller than a radial thickness of the second frame body, The erected portion and the flange portion are integral with each other.

7. The recessed lighting fixture of claim 6.

9. The lower end of the reflector is provided below the second frame body so that the second frame body is not visible.

2. The recessed lighting fixture of claim 1.

10. the mounting spring is formed of an elastic plate-like member and is fixed to the first frame and the second frame at a predetermined position; a fixing portion that fixes the flange portion to the plate material below the position; 3. The recessed lighting fixture of claim 2.

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