JP2009266545A - Luminaire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a luminaire that increases an optical output by enlarging a reflector and of reducing an excrescence quantity of protrusion from a frame to a lower part when turning a body of a lighting fitting. <P>SOLUTION: Because of separately disposing a pivot rod 33b for pivotably supporting the body 30 of the lighting fitting with respect to a rotating table 21; and a fixation screw 34 for fixing the body 30 of the lighting fitting on the rotating table 21 in a predetermined turning angle, the need of using a screw as the pivot rod is eliminated, and the pivot rod 33b can be miniaturized. As a result, the reflector 32 can be enlarged to improve the optical output. In addition, the pivot rod 33b is disposed in a position closer to the tip of the body 30 of the lighting fitting than the fixation screw 34, and therefore a protrusion of the body 30 of the lighting fitting from the frame 20 can be minimized when turning the body 30 of the lighting fitting about the pivot rod 33b. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a lighting apparatus that is used by being embedded in an embedding hole formed in an attachment site and can irradiate light in an arbitrary direction.

Conventionally, there has been proposed a luminaire that is used by being embedded in a mounting surface and whose irradiation direction can be adjusted (see, for example, Patent Document 1).
As shown in FIG. 5, a lighting apparatus 100 described in Patent Document 1 is used by being embedded in, for example, a ceiling, and has a cylindrical main body 101. A frame body 102 is attached to the inner peripheral edge so as to protrude inward of the main body 101. In addition, a lamp body 103 is accommodated in the main body 101, and a lower end peripheral portion of the lamp body 103 is placed on the frame body 102 so as to be rotatable in the horizontal direction. A lamp 104 having a lamp 105 and a reflecting plate 106 is accommodated inside the lamp body 103, and the lamp 104 is rotatably supported by mounting screws 107 at two opposing points of the lamp body 103.

Accordingly, the irradiation direction can be adjusted by rotating the lamp main body 103 in the horizontal direction with respect to the frame body 102 and rotating the lamp 104 in the vertical direction inside the lamp main body 103 around the mounting screw 107. Yes.
Japanese Utility Model Publication No. 63-101411 (FIG. 1)

  By the way, the mounting screw 107 as a rotating shaft that rotatably supports the lamp 104 on the lamp main body 103 that is a rotating body that can rotate with respect to the frame 102, and the lamp 104 at a position rotated at a predetermined rotation angle. Generally, the mounting screw 107 as a fixing means for fixing the lamp to the lamp body 103 is the same member. Further, the screws such as the mounting screws 107 need to have a certain length in order to attach washers, nuts and the like. For this reason, when the screws are fastened at the front end of the lamp body, they interfere with the reflecting plate. There was a problem that the light output was reduced because the light output had to be reduced.

  Therefore, in order to avoid the above-mentioned problem, if the mounting screw 107 is provided apart from the tip of the lamp 104, the reflector 106 can be enlarged to increase the light output. However, when the lamp 104 is rotated, In addition, there is a problem that the front end of the lamp 104 protrudes downward from the frame (indicated by a two-dot chain line in FIG. 5).

  The present invention was made in order to solve the conventional problems. The light output can be increased by enlarging the reflector, and the amount of protrusion protruding downward from the frame when the lamp body is rotated. It aims at providing the lighting fixture which can make small.

  The lighting fixture of the present invention includes a frame body embedded in an embedding hole formed in an attachment site, a turntable that is turnably attached to the frame body, a light source and a reflector, and the turntable. A lamp body provided so as to be pivotable in the vertical direction with respect to the rotary base, and a pivot shaft for pivotally supporting the lamp body with respect to the turntable at a predetermined pivot angle. A fixing screw for fixing the lamp body to the turntable is provided separately, and the rotation shaft is provided on the distal end side of the lamp body with respect to the fixing screw.

  With this configuration, a rotation shaft that rotatably supports the lamp body with respect to the turntable and a fixing screw that fixes the lamp body to the turntable at a predetermined rotation angle are provided separately. It is not necessary to use a screw as the shaft, and the rotation shaft can be reduced. As a result, the reflector can be enlarged to improve the light output. In addition, since the rotation shaft is provided on the distal end side of the lamp body with respect to the fixing screw, the lamp body protruding from the frame can be minimized when the lamp body is rotated around the rotation shaft. .

  Moreover, the lighting fixture of this invention has the structure which the said rotating shaft is a processus | protrusion integrally formed in the said lamp main body.

  With this configuration, since the protrusion is integrally provided as the rotation shaft, the rotation shaft does not protrude inside the lamp body. Thereby, the reflector provided in the lamp body can be maximized, and the light output can be improved.

  In the present invention, the rotation shaft that rotatably supports the lamp body with respect to the turntable and the fixing screw that fixes the lamp body to the turntable at a predetermined rotation angle are separately provided. It is not necessary to use a screw as the shaft, and the rotation shaft can be reduced. As a result, the reflector can be enlarged to improve the light output. In addition, since the rotation shaft is provided on the distal end side of the lamp body with respect to the fixing screw, the lamp body protruding from the frame can be minimized when the lamp body is rotated around the rotation shaft. It is possible to provide a lighting apparatus having the effect described above.

Hereinafter, the lighting fixture of embodiment of this invention is demonstrated using drawing.
1 is a perspective view of a lighting apparatus according to an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along the line II-II in FIG. 1, FIG. 3 is a cross-sectional view in a state where the lamp body is rotated, and FIG. It is explanatory drawing which shows the positional relationship of the rotation center of and a rotation fixing screw.

  As shown in FIGS. 1-3, the lighting fixture 10 of this invention is embedded and used for the embedding hole formed in attachment parts, such as a ceiling, The frame 20 embedded in an embedding hole. And a turntable 21 that is turnably attached to the frame body 20, and a lamp body 30 that is turnable in the vertical direction with respect to the turntable 21.

  The frame body 20 has a cylindrical frame body 22, and has a bowl-shaped decorative plate 23 that is exposed in contact with a lower surface such as a ceiling at the lower end surface of the frame body 22. Further, at least three support members 24 made of a plurality of leaf springs are provided radially from the vicinity of the lower end portion of the frame body 22, and the distal end portion is bent downward to form a locking portion 24 a. . The inner end portion of the support member 24 has a support portion 24 b bent upward, and the support portion 24 b is adjusted in the vertical direction with respect to the support plate 25 provided on the outer surface of the frame body 22. It is attached as possible. Therefore, the support member 24 can be adjusted in the vertical direction according to the thickness of the ceiling.

  A horizontal step 22a is provided on the upper portion of the frame body 22, and a turntable holding portion 22b is provided upward from the outer peripheral surface of the step 22a. Accordingly, the lower surface of the turntable 21 is supported by the step 22a of the frame body 22 and the side surface is held by the turntable holding portion 22b.

  The turntable 21 has a cylindrical shape, and a lower end surface is bent horizontally and has a sliding surface 21 a that slides on a step 22 a of the frame body 22. The outer end of the sliding surface 21a is bent up to be provided with an upright wall 21b. When the turntable 21 turns, it comes into contact with the inner surface of the turntable holding portion 22b of the frame body 22 to turn stably. It is possible. In a normal state, a clearance is provided between the outer surface of the standing wall 21b and the inner surface of the turntable holding portion 22b so that the turntable 21 does not rattle, so that the turntable can be smoothly turned.

  On the inner surface of the turntable 21, a pair of lamp holding plates 26, 26 protruding above the turntable 21 at a position facing the diameter direction is provided. As shown in FIG. 4, the lamp holding plate 26 is an overall rectangular plate-like member, and a round hole 26a for rotatably supporting the lamp body 30 is provided in the lower part, and a round hole 26a in the upper part. An arc-shaped groove 26b having a partial arc shape with a constant width centered on the center is formed.

  Inside the lamp body 30, a lamp 31 and a reflection plate 32 that are light sources are provided. The lamp main body lower part 30a in which the reflecting plate 32 is enclosed has a truncated cone shape, and a pair of rotation mounting portions 33 project outward and are integrally provided at positions opposed to the diameter direction. The lamp body upper portion 30b, which is screwed to the upper end surface of the lamp body lower portion 30a, has a frame shape with a rectangular cross section, and a socket 36 for holding the lamp 31 and supplying power is attached to the lower surface of the top plate 35. It has been.

  The rotation attachment portion 33 is provided such that an outer surface 33a protruding outward from the lamp body lower portion 30a is vertical, and a columnar rotation center protrusion 33b that is a rotation shaft is provided at the lower portion of the outer surface 33a. Projecting outward is formed integrally. The rotation center protrusion 33b is fitted in a round hole 26a provided in the lamp holding plate 26 of the turntable 21, and holds the lamp main body 30 in a rotatable manner. For this reason, unlike the screw member used as a conventional rotating shaft, it does not protrude inside the lamp body 30, so that the reflecting plate 32 can be maximized inside the lamp body 30. In addition, a screw hole 33c for fixing the lamp body 30 in a rotated state is provided through the upper portion of the rotation attachment portion 33.

  A fixing screw 34 that passes through the arc-shaped groove 26 b of the lamp holding plate 26 is attached to the screw hole 33 c of the rotation attachment portion 33, and a nut is attached to the inner surface of the lamp body 30 in the space inside the rotation attachment portion 33. 34a is attached. That is, since the mounting position of the fixing screw 34 is separated upward from the lower end surface of the reflecting plate 32 that is cup-shaped, such as an ellipse that extends downward, a cross-section (that is, light irradiation) at the lower end surface of the reflecting plate 32. Even if the opening) is enlarged, a mounting space for the nut 34a and the like can be secured, and the reflector 32 can be enlarged.

  Accordingly, in a state where the fixing screw 34 is loosened, the fixing screw 34 can move along the arc-shaped groove 26b of the lamp holding plate 26, so that the lamp body 30 can be rotated. Further, when the fixing screw 34 is tightened, the fixing screw 34 is fixed to the arc-shaped groove 26b, so that the rotation of the lamp body 30 is prevented. As shown in FIG. 4, when the fixing screw 34 is positioned at one end (here, the left end) of the arc-shaped groove 26b of the lamp holding plate 26, the lamp body 30 is set to face vertically downward. A shift α is provided at the position of the mounting screw 34 at this time and the position of the round hole 26a of the lamp holding plate 26 which is the center of rotation.

  When attaching such a lighting fixture 10 to an embedding hole provided on a ceiling or the like, each support member 24 attached to the frame body 20 is deformed upward, and the tip of the support member 24 is inserted into the embedding hole. And locked to the back of the ceiling by the locking portion 24a. When the lighting fixture 10 is pushed into the embedding hole until the upper surface 23a of the decorative plate 23 comes into contact with the ceiling surface, the support member 24 expands behind the ceiling and supports the lighting fixture 10.

  On the other hand, when removing the luminaire 10, the support member 24 is elastically deformed to the inside of the embedding hole by pulling down the luminaire 10, and the locking portion 24a of the support member 24 is formed on the outer peripheral portion of the embedding hole. It is once locked at the locked position. The operator can remove the lighting fixture 10 by inserting a hand between the ceiling and the lighting fixture 10 to deform the support member 24 inward and removing the locking portion 24a from the back of the ceiling.

  As described above, according to the lighting fixture 10 described above, the lamp body 30 is rotated at a predetermined rotation angle with the rotation center protrusion 33b that is a rotation shaft that rotatably supports the lamp body 30 with respect to the turntable 21. Since the fixing screw 34 to be fixed to the base 21 is provided separately, it is not necessary to use a screw as a rotating shaft as in the prior art, and the size can be reduced. As a result, the reflector 32 can be enlarged to improve the light output. Further, since the rotation center protrusion 33b is provided on the distal end side (lower side) of the lamp body 30 with respect to the fixing screw 34, the lamp body 30 protrudes downward from the frame body 20 when the lamp body 30 is rotated. Can be minimized.

  In addition, the lighting fixture of this invention is not limited to embodiment (each) mentioned above, A suitable deformation | transformation, improvement, etc. are possible.

The perspective view of the lighting fixture concerning embodiment of this invention Sectional view at II-II position in Fig. 1 Sectional view of the lamp body rotated It is a front view of a lamp holding plate, and is an explanatory view showing a positional relationship between a rotation center of the lamp body and a rotation fixing screw. Cross-sectional view of a conventional lighting fixture

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Lighting fixture 20 Frame 21 Turntable 30 Lamp body 31 Lamp (light source)
32 Reflector 33b Rotating center protrusion (Rotating shaft)
34 Fixing screw

Claims (2)

A frame body embedded in an embedding hole formed in an attachment site, a turntable attached to the frame body so as to be pivotable, a light source and a reflector, and rotated in the vertical direction with respect to the turntable. A lighting fixture having a movable lamp body,
A rotating shaft that rotatably supports the lamp body with respect to the rotating table and a fixing screw that fixes the lamp body to the rotating table at a predetermined rotating angle are separately provided, and the rotating shaft Is provided on the distal end side of the lamp body with respect to the fixing screw.   The lighting apparatus according to claim 1, wherein the rotation shaft is a protrusion formed integrally with the lamp body.

Images