JP2009076391A - Ceiling-embedded lighting apparatus - Google Patents

Ceiling-embedded lighting apparatus Download PDF

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JP2009076391A
JP2009076391A JP2007245963A JP2007245963A JP2009076391A JP 2009076391 A JP2009076391 A JP 2009076391A JP 2007245963 A JP2007245963 A JP 2007245963A JP 2007245963 A JP2007245963 A JP 2007245963A JP 2009076391 A JP2009076391 A JP 2009076391A
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lamp
ceiling
ceiling material
frame body
frame
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JP4849045B2 (en
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Tatsuya Miwa
竜也 三輪
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Panasonic Electric Works Co Ltd
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Panasonic Electric Works Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a ceiling-embedded lighting apparatus capable of preventing temperature rise of a ceiling material by preventing contact of the ceiling material with a lamp when the lamp is rotated. <P>SOLUTION: The ceiling-embedded lighting apparatus 1 is provided with a frame 2 which is inserted in a through hole C2 provided in a ceiling material C, an apparatus main body 3 which is arranged inside the frame 2 and installed on the frame 2, and a lamp 4 inside of which a light source 6 is arranged and which is axially supported by a bolt 81 being a rotating shaft to the apparatus main body 3 so that it can rotate in vertical direction. Then, a contact prevention tool 9 to prevent the lamp 4 from contacting the ceiling material when the lamp 4 is rotated is rotatably installed on the bolt 81. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、光照射方向を可変とした天井埋込型照明器具に関するものである。   The present invention relates to a ceiling-embedded lighting fixture having a variable light irradiation direction.

従来から、光照射方向を可変とした天井埋込型照明器具として、図６に示すように、天井材Ｃ’に貫設した貫通孔Ｃ２’に挿入され天井材Ｃ’に取り付けられる枠体２’と、枠体２’の内側に配置され枠体２’に取り付けられた器具本体３’と、内部に光源６’が配置され器具本体３’に対して回動自在に支持された灯具４’とを備えた天井埋込型照明器具１’が提案されている（特許文献１参照）。ここで、上述の枠体２’は、下端縁から外方へ外鍔部２１’が延設されており、外鍔部２１’と枠体２’の外側面に突設された脚部２ａ’とにより天井材Ｃ’を挟持する形で天井材Ｃ’に取り付けられる。   Conventionally, as a ceiling-embedded lighting fixture having a variable light irradiation direction, as shown in FIG. 6, a frame 2 that is inserted into a through-hole C2 ′ provided in the ceiling material C ′ and attached to the ceiling material C ′. ', An instrument body 3' disposed inside the frame body 2 'and attached to the frame body 2', and a lamp 4 having a light source 6 'disposed therein and rotatably supported with respect to the instrument body 3'. There has been proposed a ceiling-embedded lighting fixture 1 provided with '(see Patent Document 1). Here, the above-described frame body 2 'has an outer flange portion 21' extending outward from the lower end edge, and a leg portion 2a protruding from the outer flange portion 21 'and the outer surface of the frame body 2'. It is attached to the ceiling material C ′ in such a manner that the ceiling material C ′ is sandwiched between “and”.

また、従来から、図６に示した構成の天井埋込型照明器具１’の他に、図７に示すように、天井材Ｃ’に貫設した貫通孔Ｃ２’に挿入され天井材Ｃ’に取り付けられる枠体２”と、枠体２”の内側に配置されて枠体２”に取り付けられた器具本体３”と、内部に光源６”が配置され器具本体３”に対して回転軸８１”により上下方向に回動可能（いわゆる首振り可能）となるように結合された灯具４”とを備え、枠体２”の側面に配設された複数の板ばねからなる取付ばね２３”が天井材Ｃ’の貫通孔Ｃ２’の内周面に弾接することで、枠体２”が天井材Ｃ’に取り付けられる天井埋込型照明器具１”が提案されている。（公知文献にかかるものではない）。   Further, conventionally, as shown in FIG. 7, in addition to the ceiling-embedded lighting fixture 1 ′ having the configuration shown in FIG. 6, the ceiling material C ′ inserted into a through hole C2 ′ provided through the ceiling material C ′. A frame 2 ″ attached to the frame body 2 ″, an instrument body 3 ″ arranged inside the frame body 2 ″ and attached to the frame body 2 ″, and a light source 6 ″ arranged inside the instrument body 3 ″ and a rotation axis with respect to the instrument body 3 ″ A mounting spring 23 ″ comprising a plurality of leaf springs disposed on the side surface of the frame 2 ″, and a lamp 4 ″ coupled so as to be pivotable in the vertical direction by 81 ″ (so-called swingable). Has been proposed in which the frame 2 ″ is attached to the ceiling material C ′ by elastically contacting the inner peripheral surface of the through hole C2 ′ of the ceiling material C ′. (This is not related to known literature).

ここで、図７に示した構成の天井埋込型照明器具１”は、灯具４”を傾ける際に灯具４”が所定の角度以上に回動するのを防止する手段として、回転軸８１”が挿通される灯具４”の軸受け部４ｃ”及び器具本体３”の軸受け部（図示せず）それぞれに相互に当接可能な一対のストッパ（図示せず）が設けられている。
特開２０００−３４８５２８号公報 Here, the ceiling-embedded lighting fixture 1 ″ having the configuration shown in FIG. 7 has a rotating shaft 81 ″ as a means for preventing the lamp 4 ″ from rotating more than a predetermined angle when the lamp 4 ″ is tilted. Is provided with a pair of stoppers (not shown) capable of abutting each other on the bearing part 4c '' of the lamp 4 "and the bearing part (not shown) of the instrument body 3".
JP 2000-348528 A

しかしながら、図７に示す構成の天井埋込型照明器具１”では、天井材Ｃ’が同図中に一点鎖線で示すように所定の厚さよりも厚くなると、灯具４”を傾けたときに灯具４”が天井材Ｃ’に接触し、灯具４”で発生した熱により天井材Ｃ’の温度が上昇することがあった。   However, in the ceiling-embedded lighting fixture 1 ″ having the configuration shown in FIG. 7, when the ceiling material C ′ becomes thicker than a predetermined thickness as shown by a dashed line in FIG. 4 ″ may contact the ceiling material C ′, and the temperature of the ceiling material C ′ may increase due to the heat generated by the lamp 4 ″.

本願発明は、上記事由に鑑みて為されたものであり、その目的は、灯具を回動させたときに灯具が天井材に接触するのを防止して、天井材の温度上昇を防ぐことが可能な天井埋込型照明器具を提供することにある。   The present invention has been made in view of the above reasons, and its purpose is to prevent the lamp from coming into contact with the ceiling material when the lamp is rotated, thereby preventing the temperature of the ceiling material from rising. The object is to provide a ceiling-mountable luminaire.

請求項１の発明は、天井材に貫設した貫通孔に挿入され天井材に取り付けられる枠体と、少なくとも一部が枠体の内側に配置されて枠体に取り付けられた器具本体と、光源が内部に配置され器具本体に対して回転軸により上下方向に回動可能となるように軸支された灯具とを備え、灯具を回動させたときに灯具が天井材に接触するのを防止する接触防止具を回転軸に回動自在に設けたことを特徴とする。   The invention of claim 1 includes a frame body that is inserted into a through-hole penetrating the ceiling material and is attached to the ceiling material, an instrument body that is at least partially disposed inside the frame body and attached to the frame body, and a light source And a lamp that is pivotally supported so as to be pivotable in the vertical direction with respect to the fixture body, and prevents the lamp from coming into contact with the ceiling material when the lamp is rotated. The contact preventing tool is provided on a rotating shaft so as to be rotatable.

この発明によれば、灯具の回転軸に回動自在に設けられた接触防止具を備えていることにより、灯具を回動させたときに灯具が天井材に接触するのを防止して、天井材の温度上昇を防ぐことが可能となる。   According to the present invention, the contact prevention device provided rotatably on the rotating shaft of the lamp prevents the lamp from coming into contact with the ceiling material when the lamp is rotated. It becomes possible to prevent the temperature of the material from rising.

請求項２の発明は、請求項１の発明において、前記器具本体は、前記枠体の内側に配置されて前記枠体に取り付けられ前記光源からの光を出射させるベース部と、ベース部上に配置され前記回転軸により前記灯具を軸支した支持体とを備え、前記回転軸を水平面内で前記枠体の投影領域よりも外側の位置まで移動可能とするように支持体がベース部に対してスライド自在に連結されてなることを特徴とする。   According to a second aspect of the present invention, in the first aspect of the invention, the instrument main body is disposed on the inner side of the frame body, is attached to the frame body, and emits light from the light source. And a support body that supports the lamp by the rotation shaft, and the support body is movable relative to the base portion so that the rotation shaft can be moved to a position outside the projection area of the frame body in a horizontal plane. And slidably connected to each other.

この発明によれば、前記天井材の厚さがベース部の高さに比べて薄い場合には、前記回転軸により前記灯具を軸支する支持体を前記枠体に取り付けられるベース部に対して水平面内でスライドさせて、前記回転軸を前記枠体の投影領域よりも外側の位置まで移動させることにより、前記灯具から出射される光を有効に活用できる前記灯具の回動範囲を広げることができる。   According to this invention, when the thickness of the ceiling material is thinner than the height of the base portion, the support body that pivotally supports the lamp by the rotating shaft is attached to the base portion attached to the frame body. By sliding in a horizontal plane and moving the rotation axis to a position outside the projection area of the frame body, the rotation range of the lamp that can effectively use the light emitted from the lamp can be expanded. it can.

請求項１の発明によれば、灯具の回転軸に回動自在に設けられた接触防止具を備えていることにより、灯具を回動させたときに灯具が天井材に接触するのを防止して、天井材の温度上昇を防ぐことが可能となる。   According to the first aspect of the present invention, by providing the contact prevention tool rotatably provided on the rotating shaft of the lamp, it is possible to prevent the lamp from contacting the ceiling material when the lamp is rotated. Thus, it is possible to prevent the temperature of the ceiling material from rising.

以下、本実施形態の天井埋込型照明器具１について図１乃至図５を参照して説明する。   Hereinafter, the ceiling-embedded lighting fixture 1 of this embodiment will be described with reference to FIGS. 1 to 5.

本実施形態の天井埋込型照明器具１は、天井材Ｃに貫設した円形状の貫通孔Ｃ２に挿入され天井材Ｃに取り付けられる円筒状の枠体２と、一部が枠体２の内側に配置されて枠体２に取り付けられた器具本体３と、内部に白熱電球からなる光源６が配置され器具本体３に対して上下方向に回動可能となるように器具本体３に結合された灯具４とを備えている。   The ceiling-embedded lighting fixture 1 according to this embodiment includes a cylindrical frame 2 that is inserted into a circular through hole C2 that extends through the ceiling material C and attached to the ceiling material C, and a part of the frame 2. An instrument body 3 disposed on the inner side and attached to the frame 2 and a light source 6 made of an incandescent bulb are disposed inside, and coupled to the instrument body 3 so as to be rotatable in the vertical direction with respect to the instrument body 3. Lamp 4 is provided.

枠体２は、下端縁から外方へ外鍔部２１が延設されており、貫通孔Ｃ２に挿入されて外鍔部２１と天井材Ｃにおける貫通孔Ｃ２の周部下面Ｃ１とが当接する形で天井材Ｃに取り付けられる。ここで、枠体２は、図７に示した構成と同様に、枠体２の外側面に配設された複数（ここでは、２つ）の板ばねからなる第一の取付ばね（図示せず）が天井材Ｃの貫通孔Ｃ２の内周面に弾接することで、天井材Ｃに取り付けられる。   The frame body 2 has an outer flange portion 21 extending outward from the lower end edge, and is inserted into the through hole C2 so that the outer flange portion 21 and the lower surface C1 of the peripheral portion of the through hole C2 in the ceiling material C abut. It is attached to the ceiling material C in the form. Here, the frame body 2 has a first mounting spring (not shown) composed of a plurality (here, two) of leaf springs disposed on the outer surface of the frame body 2, similarly to the configuration shown in FIG. 7. Is attached to the ceiling material C by elastically contacting the inner peripheral surface of the through hole C2 of the ceiling material C.

器具本体３は、上方からの光を通過させる窓孔３２ａを有し枠体２の内側に配置されて枠体２に取り付けられるベース部３２と、ベース部３２の外側面に設けられベース部３２を枠体２に着脱自在に取り付けられるための２つの板ばねからなる第二の取付ばね３３，３３と、ベース部３２の上側に配置され灯具４を回転軸となるボルト８１により回動可能に軸支した支持体３１とを備え、支持体３１が２本の連結ねじ５１，５１によりベース部３２に連結されている。   The instrument body 3 has a window portion 32 a that allows light from above to pass therethrough, is disposed inside the frame body 2 and is attached to the frame body 2, and a base portion 32 provided on the outer surface of the base portion 32. The second mounting springs 33, 33, which are two leaf springs for removably attaching the lamp 2 to the frame 2, and the bolts 81, which are arranged on the upper side of the base portion 32 and serve as a rotating shaft, can be rotated. The support 31 is pivotally supported, and the support 31 is connected to the base portion 32 by two connecting screws 51 and 51.

ベース部３２は、外周形状が円形状であり、下端縁から外方へ外鍔部３２ｂが延設されており、枠体２に下方から挿入して外鍔部３２ｂが枠体２の下端に設けられた段部２２に係合する形で枠体２の内側に配置される。なお、ベース部３２は、下側ほど窓孔３２ａの開口面積が大きくなるように窓孔３２ａの内側面が階段状に形成されている。   The base portion 32 has a circular outer peripheral shape, and an outer flange portion 32 b extends outward from the lower end edge. The outer flange portion 32 b is inserted into the frame body 2 from below and the outer flange portion 32 b is formed at the lower end of the frame body 2. It arrange | positions inside the frame 2 in the form engaged with the step part 22 provided. In the base portion 32, the inner surface of the window hole 32a is formed in a stepped shape so that the opening area of the window hole 32a increases toward the lower side.

上述の２つの第二の取付ばね３３，３３は、金属板を折曲して形成されており、ベース部３２をベース部３２の径方向において挟む形で配設されている。ここにおいて、２つの取付ばね３３，３３は、下端部同士が連結片３３ｂ（図４（ａ）参照）によって連結されている。そして、ベース部３２は、取付ばね３３の上端部３３ａとベース部３２の外鍔部３２ｂとで枠体２を挟持する形で枠体２に取り付けられる。   The two second mounting springs 33, 33 described above are formed by bending a metal plate, and are disposed so as to sandwich the base portion 32 in the radial direction of the base portion 32. Here, the two attachment springs 33 and 33 are connected to each other at lower ends by a connecting piece 33b (see FIG. 4A). The base portion 32 is attached to the frame body 2 such that the frame body 2 is sandwiched between the upper end portion 33 a of the attachment spring 33 and the outer flange portion 32 b of the base portion 32.

支持体３１は、外形が円形状のフランジ部３１aを有し、フランジ部３１ａには、当該フランジ部３１ａの上側に位置する灯具４から出射した光を下側へ通過させるための楕円状の開口部３１ｄが偏心して形成されている。また、支持体３１のフランジ部３１ａの上面には、開口部３１ｄの長径方向（図１（ａ）における左右方向）の一方側の幅広部に、上述の回転軸が挿入される軸受け部３１ｃが立設されている。また、フランジ部３１ａ上面には、当該フランジ部３１ａの周方向に沿って平面視Ｃ字状の遮蔽壁３１ｂが立設されている。   The support 31 has a flange portion 31a having a circular outer shape, and the flange portion 31a has an elliptical opening for allowing light emitted from the lamp 4 located above the flange portion 31a to pass downward. The portion 31d is formed eccentrically. Further, on the upper surface of the flange portion 31a of the support 31, there is a bearing portion 31c into which the above-described rotation shaft is inserted into a wide portion on one side in the major axis direction (left-right direction in FIG. 1A) of the opening 31d. It is erected. Further, on the upper surface of the flange portion 31a, a C-shaped shielding wall 31b in a plan view is erected along the circumferential direction of the flange portion 31a.

ここで、支持体３１のフランジ部３１ａには、開口部３１ｄの長径方向に長手方向が一致する２つの長孔３１１，３１１（図２参照）が開口部３１ｄの短径方向の両側に穿設されており、一方、ベース部３２には、長孔３１１，３１１それぞれに対応した位置に上述の連結ねじ５１が螺合するねじ孔（図示せず）が穿設されている。そして、上述の連結ねじ５１は、コイルばね５２及び座金５３を通して長孔３１１に挿通されて、ベース部３２の上面に穿設されたねじ孔に螺合することで、支持体３１は、ベース部３２に対して水平面内で長孔の長手方向にスライド可能となるように固定される。ここで、長孔３１１は、長手方向の寸法を支持体３１を枠体２の投影領域の外側の位置まで移動させることができる寸法に設定されている。   Here, in the flange portion 31a of the support 31, two long holes 311 and 311 (see FIG. 2) whose longitudinal direction coincides with the major axis direction of the opening 31d are formed on both sides of the minor axis direction of the opening 31d. On the other hand, the base portion 32 is formed with screw holes (not shown) into which the above-described connecting screws 51 are screwed at positions corresponding to the long holes 311 and 311, respectively. The connecting screw 51 is inserted into the long hole 311 through the coil spring 52 and the washer 53 and screwed into the screw hole formed in the upper surface of the base portion 32, so that the support 31 is fixed to the base portion. 32 is fixed so as to be slidable in the longitudinal direction of the long hole in a horizontal plane. Here, the long hole 311 is set so that the dimension in the longitudinal direction can move the support 31 to a position outside the projection region of the frame 2.

また、支持体３１のフランジ部３１ａに設けられた開口部３１ｄの大きさは、ボルト８１を枠体２の投影領域の外側の位置まで移動させたときに、支持体３１の上方からの光を遮らないようにするために、窓孔３２ａの上端の開口部３２ｃの大きさよりも大きく形成されている。なお、支持体３１のスライドし易さは、連結ねじ５１の締め付けトルクと連結ねじ５１のねじ孔への入れ具合との少なくとも一方を調整することにより設定できる。また、コイルばね５２、又はコイルばね５２及び座金５３の代わりに、ばね座金に連結ねじ５１が挿通されるものであってもよい。   Further, the size of the opening 31d provided in the flange 31a of the support 31 is such that light from above the support 31 is transmitted when the bolt 81 is moved to a position outside the projection region of the frame 2. In order not to obstruct, it is formed larger than the size of the opening 32c at the upper end of the window hole 32a. The ease of sliding of the support 31 can be set by adjusting at least one of the tightening torque of the connection screw 51 and the degree of insertion of the connection screw 51 into the screw hole. Further, instead of the coil spring 52 or the coil spring 52 and the washer 53, the connection screw 51 may be inserted into the spring washer.

灯具４は、前面に光照射用開口部４ａを有し、前端縁（光照射用開口部４ａの周縁）に、上述のボルト８１が挿通される軸受け部４ｃが突設されている。灯具４側の軸受け部４ｃと支持体３１側の軸受け部３１ｃに挿通されたボルト８１の先端部にナット８２が螺合されることでボルト８１により灯具４が器具本体３に回動可能に軸支される。ここで、灯具４は、ナット８２の締め付けトルクを調整することにより支持体３１に対してボルト８１を回転軸として上下方向に回動可能（いわゆる首振り可能）となる。   The lamp 4 has a light irradiation opening 4a on the front surface, and a bearing portion 4c through which the above-described bolt 81 is inserted projects from a front end edge (periphery of the light irradiation opening 4a). A nut 82 is screwed onto the tip of a bolt 81 inserted into the bearing 4c on the lamp 4 side and the bearing 31c on the support 31 side, so that the lamp 4 can be pivoted to the fixture body 3 by the bolt 81. Be supported. Here, the lamp 4 can be turned up and down (so-called swingable) with the bolt 81 as a rotation axis with respect to the support 31 by adjusting the tightening torque of the nut 82.

灯具４の内部には、光源６を保持するためのソケット７が配置されており、ソケット７に保持された光源６から放射された光は、灯具４の光照射用開口部４ａから出射される。また、灯具４には、光源６が発する熱を逃がすため通気用開口部４ｂが複数個設けられている。なお、本実施形態では光源６として白熱電球を例示したが、これに限定されるものではなく、例えばハロゲンランプ、メタルハライドランプ、電球形蛍光灯又は高輝度ＬＥＤランプであってもよい。   A socket 7 for holding the light source 6 is disposed inside the lamp 4, and light emitted from the light source 6 held in the socket 7 is emitted from the light irradiation opening 4 a of the lamp 4. . Further, the lamp 4 is provided with a plurality of ventilation openings 4b for releasing heat generated by the light source 6. In the present embodiment, an incandescent light bulb is illustrated as the light source 6. However, the present invention is not limited to this. For example, a halogen lamp, a metal halide lamp, a light bulb-type fluorescent lamp, or a high-intensity LED lamp may be used.

ところで、本実施形態の天井埋込型照明器具１は、灯具４を回動させたときに灯具４が天井材Ｃに接触するのを防止する接触防止具９を備えている。接触防止具９は、図３に示すように、ステンレス鋼（ＳＵＳ）製の棒状部材９aの両端部を同一方向にく字状に折曲し、その一端部には円環状の連結部９ｂが曲成され、他端部には円環状の灯具接触部９ｃが曲成されている。ここで、円環状の連結部９ｂを含む平面と円環状の灯具接触部９ｃを含む平面とは互いに直交するように曲成されている。そして、接触防止具９は、連結部９ｂに挿通されたボルト８１に回動自在に設けられている。   By the way, the ceiling-embedded lighting fixture 1 of this embodiment includes a contact prevention tool 9 that prevents the lamp 4 from coming into contact with the ceiling material C when the lamp 4 is rotated. As shown in FIG. 3, the contact preventer 9 is formed by bending both ends of a stainless steel (SUS) rod-shaped member 9a into a square shape in the same direction, and an annular connecting portion 9b at one end thereof. An annular lamp contact portion 9c is bent at the other end. Here, the plane including the annular connecting portion 9b and the plane including the annular lamp contact portion 9c are bent so as to be orthogonal to each other. And the contact prevention tool 9 is rotatably provided in the volt | bolt 81 penetrated by the connection part 9b.

しかして、本実施形態の天井埋込型照明器具１では、天井材Ｃの厚さが枠体２の高さよりも厚い場合には、図１（ｂ）に示すように、灯具４を一定角度回動させると、接触防止具９が天井材Ｃにおける貫通孔Ｃ２の上端と接触することにより、灯具４が天井材Ｃに接触するのを防止して、天井材Ｃの温度上昇を防ぐことが可能となる。   Therefore, in the ceiling-embedded lighting fixture 1 of the present embodiment, when the thickness of the ceiling material C is thicker than the height of the frame body 2, as shown in FIG. When rotating, the contact prevention tool 9 comes into contact with the upper end of the through hole C2 in the ceiling material C, thereby preventing the lamp 4 from contacting the ceiling material C and preventing the temperature of the ceiling material C from rising. It becomes possible.

ところで、灯具４の内部に配置された光源６を交換する際に、図４（ａ）に示すように、器具本体３を枠体２の下側へ引き下げて取り出す必要がある。ここで、灯具４を一度、接触防止具９が天井材Ｃにおける貫通孔Ｃ２の上端と接触する位置まで傾けると、接触防止具９は貫通孔Ｃ２の上端と接触する形で留まる。すると、器具本体３を引き下げる際に、貫通孔Ｃ２の上端に接触防止具９が引っ掛り、光源６の交換作業に支障を及ぼすことが懸念される。   By the way, when exchanging the light source 6 disposed inside the lamp 4, it is necessary to pull out the instrument body 3 to the lower side of the frame body 2 as shown in FIG. Here, once the lamp 4 is tilted to a position where the contact prevention tool 9 contacts the upper end of the through hole C2 in the ceiling material C, the contact prevention tool 9 remains in contact with the upper end of the through hole C2. Then, when the instrument main body 3 is pulled down, there is a concern that the contact prevention tool 9 may be caught on the upper end of the through hole C2 and hinder the replacement work of the light source 6.

しかしながら、本実施形態では、接触防止具９は、灯具４のボルト８１に回動自在に設けられているため、図４（ｂ）に示すように、器具本体３を引き下げると、連結部９ｂに挿通されたボルト８１を回転軸として上方に回動し、つまり、器具本体３の引き下げ方向と反対方向に立ち上がり、枠体２の投影領域内に収まる。従って、接触防止具９が器具本体３を引き出す作業に支障を及ぼすことはない。   However, in this embodiment, since the contact prevention tool 9 is rotatably provided on the bolt 81 of the lamp 4, as shown in FIG. 4B, when the instrument main body 3 is pulled down, the contact portion 9b The inserted bolt 81 is rotated upward about the rotation axis, that is, rises in a direction opposite to the direction in which the instrument body 3 is pulled down, and falls within the projection region of the frame 2. Therefore, the contact preventing tool 9 does not hinder the work of pulling out the tool body 3.

また、天井埋込型照明器具１では、図５（ａ）に示すように、灯具４を回動させる場合、灯具４の光軸が器具本体３のベース部３２の窓孔３２ａの側壁と重ならない限り、灯具４から出射される光を有効に活用できる。   In the ceiling-embedded lighting fixture 1, as shown in FIG. 5A, when the lamp 4 is rotated, the optical axis of the lamp 4 overlaps with the side wall of the window hole 32 a of the base portion 32 of the fixture body 3. As long as this is not the case, the light emitted from the lamp 4 can be used effectively.

本実施形態では、天井材Ｃの厚さがベース部３２の高さよりも薄い場合（例えば、厚さが１５ｍｍ未満の場合）は、図５（ａ）に示すように、ベース部３２の上面が天井材Ｃの上面を含む平面よりも上側に位置するので、灯具４を支持する支持体３１を、枠体２の上面の上側に位置するベース部３２の上面に沿って枠体２の投影領域の外側の位置へ移動させることにより、灯具４の光軸がベース部３２の上面に垂直な方向に対して４５度の角度をなすまで灯具４を回動させても灯具４から出射される光を有効に活用できる。この場合、接触防止具９は天井材Ｃと接触しないので、接触防止具９によって灯具４の回動範囲が制限されることはない。   In this embodiment, when the thickness of the ceiling material C is thinner than the height of the base portion 32 (for example, when the thickness is less than 15 mm), as shown in FIG. Since it is located above the plane including the upper surface of the ceiling material C, the support 31 for supporting the lamp 4 is projected along the upper surface of the base portion 32 located above the upper surface of the frame 2. The light emitted from the lamp 4 even when the lamp 4 is rotated until the optical axis of the lamp 4 forms an angle of 45 degrees with respect to the direction perpendicular to the upper surface of the base portion 32. Can be used effectively. In this case, since the contact prevention tool 9 does not contact the ceiling material C, the rotation range of the lamp 4 is not limited by the contact prevention tool 9.

一方、天井材Ｃが、図５（ｂ）に示すように、二重張り天井であって厚さがベース部３２の高さよりも厚い場合（例えば、厚さが２１ｍｍ以上の場合）は、接触防止具９が天井材Ｃの貫通孔Ｃ２の上端と接触することで、灯具４の回動範囲は制限される。また、ベース部３２の上面が天井材Ｃの上面を含む平面よりも下側に位置するので、支持体３１は、枠体２の上面の上側に位置するベース部３２上面に沿ってスライドさせても支持体３１の一部が貫通孔Ｃ２の内周面の一部に当接し、ボルト８１が枠体２の投影領域の外側への移動が制限される。従って、灯具４から出射される光を有効に活用できる灯具４の回動範囲は、灯具４の光軸がベース部３２の上面に垂直な方向に対して３５度以下の角度をなす範囲に制限される。この場合、接触防止具９の形状を適当に設定することにより灯具４の光軸がベース部３２の上面に垂直な方向に対して３５度の角度をなすまで灯具４を回動させることを可能としている。   On the other hand, as shown in FIG. 5B, when the ceiling material C is a double-tensioned ceiling and the thickness is larger than the height of the base portion 32 (for example, when the thickness is 21 mm or more), the contact is made. When the preventer 9 comes into contact with the upper end of the through hole C2 of the ceiling material C, the rotation range of the lamp 4 is limited. Further, since the upper surface of the base portion 32 is located below the plane including the upper surface of the ceiling material C, the support 31 is slid along the upper surface of the base portion 32 located above the upper surface of the frame body 2. Also, a part of the support 31 abuts a part of the inner peripheral surface of the through hole C2, and the bolt 81 is restricted from moving outside the projection area of the frame 2. Therefore, the rotation range of the lamp 4 that can effectively use the light emitted from the lamp 4 is limited to a range in which the optical axis of the lamp 4 forms an angle of 35 degrees or less with respect to the direction perpendicular to the upper surface of the base portion 32. Is done. In this case, it is possible to rotate the lamp 4 until the optical axis of the lamp 4 forms an angle of 35 degrees with respect to the direction perpendicular to the upper surface of the base portion 32 by appropriately setting the shape of the contact prevention tool 9. It is said.

実施形態の天井埋込型照明器具を示し、（ａ）は灯具を器具本体に対して上下方向に回動させていないときの側面図、（ｂ）は灯具を器具本体に対して上下方向に回動させたときの側面図である。The ceiling-embedded lighting fixture of embodiment is shown, (a) is a side view when the lamp is not rotated up and down with respect to the fixture main body, (b) is the vertical direction with respect to the fixture main body. It is a side view when rotated. 同上における器具本体を構成する支持体の一部斜視図である。It is a partial perspective view of the support body which comprises the instrument main body in the same as the above. 同上における接触防止具を示し、（ａ）は斜視図、（ｂ）は側面図、（ｃ）は正面図である。The contact prevention tool in the same as above is shown, (a) is a perspective view, (b) is a side view, and (c) is a front view. 同上の天井埋込型照明器具の光源交換時の説明図である。It is explanatory drawing at the time of light source replacement | exchange of a ceiling embedded lighting fixture same as the above. 同上の天井埋込型照明器具を示し、（ａ）は天井材の厚さが枠体の高さ以下の場合の断面図、（ｂ）は天井材の厚さが枠体の高さよりも厚い場合の断面図である。The ceiling-embedded lighting fixture is shown above, (a) is a cross-sectional view when the thickness of the ceiling material is equal to or less than the height of the frame, and (b) is thicker than the height of the frame. It is sectional drawing in the case. 従来例を示す天井埋込型照明器具の断面図である。It is sectional drawing of the ceiling-embedded lighting fixture which shows a prior art example. 他の従来例を示す天井埋込型照明器具の断面図である。It is sectional drawing of the ceiling-embedded lighting fixture which shows another prior art example.

符号の説明Explanation of symbols

１ 天井埋込型照明器具
２ 枠体
３ 器具本体
４ 灯具
６ 光源
９ 接触防止具
３１ 支持体
３２ ベース部
８１ ボルト（回転軸）
３１１ 長孔
Ｃ 天井材
Ｃ２ 貫通孔 DESCRIPTION OF SYMBOLS 1 Ceiling embedded lighting fixture 2 Frame 3 Appliance main body 4 Lamp 6 Light source 9 Contact prevention tool 31 Support body 32 Base part 81 Bolt (rotating shaft)
311 Long hole C Ceiling material C2 Through hole

Claims (2)

天井材に貫設した貫通孔に挿入され天井材に取り付けられる枠体と、少なくとも一部が枠体の内側に配置されて枠体に取り付けられた器具本体と、光源が内部に配置され器具本体に対して回転軸により上下方向に回動可能となるように軸支された灯具とを備え、灯具を回動させたときに灯具が天井材に接触するのを防止する接触防止具を回転軸に回動自在に設けたことを特徴とする天井埋込型照明器具。   A frame body that is inserted into a through-hole formed in the ceiling material and is attached to the ceiling material, an instrument body that is at least partially disposed on the inside of the frame body and attached to the frame body, and a light source that is disposed inside the instrument body A lamp that is pivotally supported so as to be pivotable in the vertical direction by the rotation shaft, and the rotation prevention shaft that prevents the lamp from contacting the ceiling material when the lamp is rotated. A ceiling-embedded luminaire characterized by being provided rotatably on the ceiling. 前記器具本体は、前記枠体の内側に配置されて前記枠体に取り付けられ前記光源からの光を出射させるベース部と、ベース部上に配置され前記回転軸により前記灯具を軸支した支持体とを備え、前記回転軸を水平面内で前記枠体の投影領域よりも外側の位置まで移動可能とするように支持体がベース部に対してスライド自在に連結されてなることを特徴とする請求項１記載の天井埋込型照明器具。





The instrument main body is disposed inside the frame body and attached to the frame body to emit light from the light source, and a support body disposed on the base section and supporting the lamp by the rotating shaft. And a support body slidably connected to the base portion so as to be movable in a horizontal plane to a position outside the projection area of the frame body. Item 9. A ceiling-embedded lighting fixture according to item 1.





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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010176899A (en) * 2009-01-27 2010-08-12 Panasonic Electric Works Co Ltd Ceiling-embedded illumination apparatus
JP2011210472A (en) * 2010-03-29 2011-10-20 Panasonic Electric Works Co Ltd Lighting fixture
WO2012026420A1 (en) * 2010-08-25 2012-03-01 パナソニック株式会社 Illumination apparatus
JP2013045709A (en) * 2011-08-25 2013-03-04 Panasonic Corp Lighting fixture
JP2013164986A (en) * 2012-02-10 2013-08-22 Panasonic Corp Illumination device for stage
WO2016146987A1 (en) * 2015-03-13 2016-09-22 Ac/Dc Led Limited Luminaires
EP3232116A1 (en) * 2016-04-11 2017-10-18 Minebea Mitsumi Inc. Angle adjustment device and lighting device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11273446A (en) * 1998-03-26 1999-10-08 Matsushita Electric Works Ltd Luminaire

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11273446A (en) * 1998-03-26 1999-10-08 Matsushita Electric Works Ltd Luminaire

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010176899A (en) * 2009-01-27 2010-08-12 Panasonic Electric Works Co Ltd Ceiling-embedded illumination apparatus
JP2011210472A (en) * 2010-03-29 2011-10-20 Panasonic Electric Works Co Ltd Lighting fixture
WO2012026420A1 (en) * 2010-08-25 2012-03-01 パナソニック株式会社 Illumination apparatus
JP2012069502A (en) * 2010-08-25 2012-04-05 Panasonic Corp Lighting fixture
JP2013045709A (en) * 2011-08-25 2013-03-04 Panasonic Corp Lighting fixture
JP2013164986A (en) * 2012-02-10 2013-08-22 Panasonic Corp Illumination device for stage
WO2016146987A1 (en) * 2015-03-13 2016-09-22 Ac/Dc Led Limited Luminaires
GB2539167A (en) * 2015-03-13 2016-12-14 Ac/Dc Led Ltd Luminaires
EP3232116A1 (en) * 2016-04-11 2017-10-18 Minebea Mitsumi Inc. Angle adjustment device and lighting device
JP2017191637A (en) * 2016-04-11 2017-10-19 ミネベアミツミ株式会社 Angle adjusting device and illumination device
CN107327758A (en) * 2016-04-11 2017-11-07 美蓓亚三美株式会社 Angular adjustment apparatus and lighting device
US10830423B2 (en) 2016-04-11 2020-11-10 Minebea Mitsumi Inc. Angle adjustment device and lighting device
CN107327758B (en) * 2016-04-11 2021-04-06 美蓓亚三美株式会社 Angle adjusting device and lighting device

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