JP6089369B2 - Downlight - Google Patents

Description

  The present invention relates to a downlight.

  Conventionally, a downlight that is fixed to a ceiling surface and capable of changing the irradiation direction of light has been provided (see, for example, Patent Document 1). The ceiling surface is a lower surface of a ceiling material made of a plate material that is fixed with a gap (so-called wiring space) between a construction material (such as concrete) with the thickness direction directed in the vertical direction. The downlight is embedded in an embedding hole which is a through hole provided in the ceiling material.

  An example of this type of downlight is shown in FIGS. The downlight includes a frame 1 fixed to a ceiling surface (not shown), a rotating frame 2 supported on the frame 1 so as to be rotatable about an axis orthogonal to the ceiling surface, A lamp 3 that holds the light source and is connected to the rotary frame 2 so as to be rotatable around an axis parallel to the ceiling surface. That is, the azimuth angle of the lamp 3 can be changed by rotating the rotating frame 2 with respect to the frame 1, and the depression angle of the lamp 3 can be changed by rotating the lamp 3 with respect to the rotating frame 2. it can. And the irradiation direction of the light of the light source hold | maintained at the lamp 3 can be changed by changing the azimuth angle and the depression angle of the lamp 3 as mentioned above.

  More specifically, the frame body 1 includes a cylindrical tube portion 11 having an axial direction directed in the vertical direction as a whole, and a ring projecting radially outward from the lower end of the tube portion 11 over the entire circumference. It has the shape collar part 12. The cylinder portion 11 is inserted into the embedding hole, and the flange portion 12 abuts on the ceiling surface around the opening below the embedding hole. That is, when viewed from below, the gap between the inner peripheral surface of the embedding hole and the outer peripheral surface of the cylindrical portion 11 is covered by the flange portion 12.

  In addition, three attachment springs 4 each made of a leaf spring are attached to the outer peripheral surface of the cylindrical portion 11 at substantially equal intervals in the circumferential direction. The frame 1 is fixed to the ceiling material (that is, to the ceiling surface) by sandwiching the ceiling material between the flange portion 12 and the attachment spring 4.

JP 2013-45711 A

  In the downlight described above, a pressing plate 5 fixed on the upper side of the frame 1 is provided. The presser plate 5 has an annular shape, and is fixed to the cylinder portion 11 of the frame body 1 with a screw so that a part thereof is positioned above the rotary frame 2. As shown in FIGS. 15 and 16, a presser spring 6 that elastically contacts the rotary frame 2 from above is interposed between the presser plate 5 and the rotary frame 2. The presser spring 6 is fixed to the presser plate 5 by screws 72 that are separate from the screws 71 that screw the presser plate 5 to the frame 1. The frictional force between the rotating frame 2 and the frame 1 is increased by the holding spring 6 and the rotating frame 2 is rotated with respect to the frame 1 by the frictional force between the holding spring 6 and the rotating frame 2. Rotation unintended by the user (for example, rotation due to vibration) can be suppressed.

  However, in the downlight described above, the process of screwing the presser spring 6 to the presser plate 5 is necessary, so that the assemblability is relatively poor.

  The present invention has been made in view of the above-described reasons, and an object thereof is to provide a downlight capable of improving assemblability.

  A downlight according to the present invention holds a frame fixed to a ceiling surface, a rotating frame supported rotatably around an axis intersecting the ceiling surface on the frame, and an electrical light source. A lamp connected to the rotary frame so as to be rotatable about an axis parallel to the ceiling surface, a pressing plate fixed to the frame body on the upper side of the rotating frame, and the pressing plate and the rotating frame. A pressing spring that elastically contacts the rotating frame from above, the pressing spring including a main body that elastically contacts the pressing plate from below, a elastic contacting portion that elastically contacts the rotating frame from above, A positioning portion that is positioned with respect to the frame body by sandwiching a part of the frame body in a rotation direction of the rotary frame with respect to the frame body, and is not fixed to the pressing plate. .

  In the downlight described above, a positioning convex portion protrudes upward on the upper surface of the frame body, and the pressing spring has a positioning hole into which the positioning convex portion is inserted, and the positioning hole is provided with the positioning projection. You may position with respect to the said frame by inserting a convex part.

  Alternatively, in the downlight described above, the pressing plate is screwed and fixed to the frame body, and the pressing spring has a positioning hole through which a screw for screwing the pressing plate to the frame body is inserted. Then, the screw may be positioned with respect to the frame body by being inserted into the positioning hole.

  According to the present invention, it is not necessary to fix the pressing spring to the pressing plate at the time of assembly, so that the assembling property can be improved.

It is a disassembled perspective view which shows the principal part of embodiment of this invention. It is a perspective view which shows the same as the above. It is a disassembled perspective view which shows the same as the above. It is a perspective view which shows a frame same as the above. It is a perspective view which shows the principal part of a frame same as the above. It is a perspective view which shows a pressing spring same as the above. It is a perspective view which shows the frame in the example of a change same as the above. It is a perspective view which shows the principal part of the frame in the example of FIG. It is a disassembled perspective view which shows the principal part of the example of FIG. It is a perspective view which shows the frame in another modified example same as the above. It is a perspective view which shows the principal part of the frame in the example of FIG. It is a disassembled perspective view which shows the principal part of the example of FIG. It is a perspective view which shows a prior art example. It is a disassembled perspective view which shows the same as the above. It is a perspective view which shows what the presser spring was fixed to the presser plate in the same as the above. It is a perspective view which shows the principal part of what fixed the presser spring to the presser plate in the same as the above.

  The downlight rotates while holding an electrical light source, a frame 1 fixed to the ceiling surface, a rotating frame 2 supported on the frame 1 so as to be rotatable around an axis intersecting the ceiling surface. And a lamp 3 connected to the frame 2 so as to be rotatable about an axis parallel to the ceiling surface. The downlight further includes a pressing plate 5 fixed to the frame 1 on the upper side of the rotating frame 2, and a pressing spring that is interposed between the pressing plate 5 and the rotating frame 2 and elastically contacts the rotating frame 2 from above. Prepare. The holding spring 6 includes a main body portion 61 that elastically contacts the holding plate 5 from below, an elastic contact portion 62 that elastically contacts the rotating frame 2 from above, and a part of the frame body 1 in the rotation direction of the rotating frame 2 with respect to the frame body 1. It has a positioning portion 63 that is positioned with respect to the frame body 1 by being sandwiched, and is not fixed to the pressing plate 5.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  In this embodiment, as shown in FIGS. 2 and 3, a frame body 1 fixed to a ceiling surface (not shown) and a frame body 1 that is rotatably supported around an axis orthogonal to the ceiling surface. The rotating frame 2 is provided. Furthermore, the present embodiment includes a lamp 3 that holds an electrical light source and is connected to the rotary frame 2 so as to be rotatable about an axis parallel to the ceiling surface. That is, the azimuth angle of the lamp 3 can be changed by rotating the rotating frame 2 with respect to the frame 1, and the depression angle of the lamp 3 can be changed by rotating the lamp 3 with respect to the rotating frame 2. it can. And the irradiation direction of the light of the light source hold | maintained at the lamp 3 can be changed by changing the azimuth angle and the depression angle of the lamp 3 as mentioned above.

  More specifically, the frame body 1 includes a cylindrical tube portion 11 having an axial direction directed in the vertical direction as a whole, and a ring projecting radially outward from the lower end of the tube portion 11 over the entire circumference. It has the shape collar part 12. The present embodiment is embedded in an embedding hole (not shown) provided in a ceiling material constituting the ceiling surface, and the cylindrical portion 11 is inserted into the embedding hole, and the flange portion 12 is , Abuts the ceiling surface around the lower opening of the embedding hole. That is, when viewed from below, the gap between the inner peripheral surface of the embedding hole and the outer peripheral surface of the cylindrical portion 11 is covered by the flange portion 12.

  The rotating frame 2 has an annular shape surrounding the lamp 3 and has a sliding portion 21 placed on the cylindrical portion 11 of the frame 1, and the sliding portion 21 slides on the cylindrical portion 11. As a result, the frame body 1 rotates around the central axis of the cylindrical portion 11 (that is, around the axis perpendicular to the ceiling surface). The rotating frame 2 has a cylindrical shape projecting downward from the inner peripheral end of the sliding portion 21, and has a support portion 22 that supports the rotating shaft 31 of the lamp 3 with respect to the rotating frame 2. The rotary shaft 31 is supported by the support portion 22 by passing through the support portion 22 in the radial direction. Furthermore, the lamp 3 includes a guided portion 32 that is provided above the rotating shaft 31 so as to project in a direction parallel to the rotating shaft 31. The rotary frame 2 has a guide portion 23 whose thickness direction is directed to the axial direction of the rotary shaft 31. An arcuate guide hole 230 coaxial with the rotation shaft 31 is provided in the guide portion 23, and the guided portion 32 is displaced in the guide hole 230 as the lamp 3 rotates with respect to the rotating frame 2. The frictional force between the guided portion 32 and the guide portion 23 suppresses rotation of the lamp 3 with respect to the rotating frame 2 and unintended rotation by the user (for example, rotation due to gravity or rotation due to vibration).

  Further, in the present embodiment, a pressing plate 5 screwed to the frame body 1 on the upper side of the rotating frame 2 and a pressing plate that is interposed between the pressing plate 5 and the rotating frame 2 and elastically contacts the rotating frame 2 from above. And a spring 6. The frictional force between the rotating frame 2 and the frame 1 is increased by the holding spring 6 and the rotating frame 2 is rotated with respect to the frame 1 by the frictional force between the holding spring 6 and the rotating frame 2. Rotation unintended by the user (for example, rotation due to vibration) can be suppressed. The holding plate 5 includes an annular main body 51 that surrounds the lamp 3, and three attachment portions 52 that are provided at substantially equal intervals in the circumferential direction of the main body 51 and project below the main body 51. A well-known attachment spring 4 is attached to each attachment portion 52 by a caulking, for example, which is made of a plate spring and sandwiches a ceiling material (not shown) between the flange portion 12 of the frame body 1. The frame 1 is fixed to the ceiling material (that is, to the ceiling surface) by sandwiching the ceiling material between the flange portion 12 and the attachment spring 4. The main body 51 is provided with a plurality of screwing portions 50 through which screws 71 for screwing to the frame 1 are inserted. Each screwing part 50 consists of a notch open | released to the up-down direction and the radial direction outer side, respectively.

  As shown in FIG. 4, on the outer peripheral surface of the cylinder portion 11, six screwing portions 131 and 132 each having a screw hole opened on the upper surface project outward in the radial direction. Each screwing part 131, 132 has an upper end projecting upward from the cylinder part 11, and the rotating frame 2 has a sliding part 21 surrounded by the upper end part of the screwing part 131, 132, thereby It is possible to prevent a positional shift in the horizontal direction that is a positional shift with respect to the body 1. Further, as the screwing portions 131 and 132, those having a relatively large width (hereinafter referred to as “first screwing portion”) 131 and those having a relatively small width (hereinafter referred to as “second screwing”). Part 132.) 132 are provided alternately. As shown in FIG. 5, a cylindrical positioning convex portion 14 with the axial direction directed in the vertical direction is projected from the upper end of each first screwing portion 131. Furthermore, on the upper end surface of each first screwing portion 131, positioning concave portions 15 that are open upward and radially outward are provided on both sides of the positioning convex portion 14, respectively.

  Next, the holding spring 6 will be described. The presser spring 6 is formed of a plate spring formed by punching and bending a metal plate, for example, and has a main body 61 that elastically contacts the lower surface of the presser plate 5 with the thickness direction directed in the vertical direction. The main body 61 is provided with a positioning hole 60 which is a circular through hole into which the positioning convex portion 14 is inserted. Further, in the main body portion 61, the end portions in the direction directed inward in the radial direction of the cylindrical portion 11 and the both end portions in the direction directed in the circumferential direction of the cylindrical portion 11 are respectively elastically below the main body portion 61. A projecting elastic contact portion 62 is provided. Further, in the main body portion 61, end portions in a direction directed toward the outer side in the radial direction of the cylindrical portion 11 and both ends in a direction directed in the circumferential direction of the cylindrical portion 11 are respectively provided in the circumferential direction of the cylindrical portion 11. A positioning portion 63 that faces the thickness direction protrudes downward.

  At the time of assembly, as shown in FIG. 1, with the rotary frame 2 placed on the frame body 1, the positioning convex portion 14 is inserted into the positioning hole 60, and the positioning portion 63 is inserted into each positioning concave portion 15. Each elastic contact portion 62 is placed on the upper surface of the sliding portion 21 of the rotating frame 2. Here, the positioning part 63 sandwiches the first screwing part 131 (that is, a part of the frame body 1) in the circumferential direction of the cylinder part 11 (that is, the rotation direction of the rotating frame 2 with respect to the frame body 1). Each positioning part 63 also sandwiches a part of the frame body 1 (the upper end part of the cylinder part 11) between each elastic contact part 62. Further, the inner peripheral surface of the positioning hole 60 is also a positioning portion that sandwiches the positioning convex portion 14 of the frame body 1 in the rotation direction of the rotary frame 2 with respect to the frame body 1. Thus, the presser spring 6 is positioned with respect to the frame body 1. After that, if the holding plate 5 is screwed and fixed to the frame body 1 as shown by an arrow A1 in FIG. The contact portions 62 elastically contact the upper surface of the sliding portion 21 of the rotating frame 2 from above. In order to avoid interference with the positioning convex portion 14 at the time of fixing by screwing, the main body portion 51 of the pressing plate 5 is provided with a notch 53 that avoids the positioning convex portion 14.

  According to the said structure, the assembly | attachment improvement is possible by the operation | work which fixes the presser spring 6 to the presser plate 5 at the time of an assembly being unnecessary.

  Here, in said embodiment, although the screw hole 130 and the positioning convex part 14 are located in a line with the circumferential direction of the cylinder part 11, the shape of the frame 1 is not restricted above. For example, as illustrated in FIGS. 7 to 9, the screw hole 130 may be disposed on the outer side of the cylindrical portion 11 in the radial direction with respect to the positioning convex portion 14. In the above example, two of the second screwing portions 132 are changed to the convex portions 16 that do not have the screw holes 130. In the above example, the screwing portion 50 (see FIG. 9) of the presser plate 5 is not a notch but a through hole.

  Further, instead of providing the positioning convex portion 14, as shown in FIGS. 10 to 12, a screw 71 used for screwing the pressing plate 5 to the frame body 1 is inserted into the positioning hole 60 of the pressing spring 6. Alternatively, the holding spring 6 may be positioned. In the example of FIGS. 10 to 12, the positioning recess 15 is open on both sides of the cylindrical portion 11 in the circumferential direction.

DESCRIPTION OF SYMBOLS 1 Frame 2 Rotating frame 3 Lamp 5 Holding plate 6 Pressing spring 14 Positioning convex part 60 Positioning hole (Inner peripheral surface is positioning part)
61 Body 62 Elastic contact 63 Positioning 71 Screw

Claims (3)

A frame fixed to the ceiling surface;
A rotating frame that is rotatably supported around an axis that intersects the ceiling surface on the frame;
A lamp that holds an electrical light source and is connected to the rotary frame so as to be rotatable about an axis parallel to the ceiling surface;
A holding plate fixed to the frame on the upper side of the rotating frame;
A pressing spring interposed between the pressing plate and the rotating frame and elastically contacting the rotating frame from above;
The presser spring sandwiches a part of the frame body in the rotation direction of the rotary frame relative to the frame body, a main body part that elastically contacts the presser plate from below, a elastic contact part that elastically contacts the rotary frame from above. And a positioning part that is positioned with respect to the frame body, and is not fixed to the pressing plate. On the upper surface of the frame body, a positioning convex portion protrudes upward,
The presser spring includes a positioning hole into which the positioning convex portion is inserted, and is positioned with respect to the frame body by inserting the positioning convex portion into the positioning hole. The described downlight. The pressing plate is screwed and fixed to the frame,
The holding spring has a positioning hole through which a screw for screwing the holding plate to the frame is inserted, and is positioned with respect to the frame by inserting the screw through the positioning hole. The downlight according to claim 1.

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