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JP7005395B2 - lighting equipment - Google Patents

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JP7005395B2
JP7005395B2 JP2018045973A JP2018045973A JP7005395B2 JP 7005395 B2 JP7005395 B2 JP 7005395B2 JP 2018045973 A JP2018045973 A JP 2018045973A JP 2018045973 A JP2018045973 A JP 2018045973A JP 7005395 B2 JP7005395 B2 JP 7005395B2
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mounting
spring
lamp
lighting fixture
ceiling
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JP2019160574A (en
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尚之 山田
太郎 神田
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Koizumi Lighting Technology Corp
Kokubu Denki Co Ltd
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Koizumi Lighting Technology Corp
Kokubu Denki Co Ltd
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Description

本発明は、照明器具に関する。 The present invention relates to a lighting fixture.

従来、天井等に形成された取付孔に取り付けられるダウンライト等の埋込型の照明器具が知られている。この種の埋込型の照明器具は、取付孔において照射方向に向けて配置される光源部と、該光源部を有する灯具本体と、該灯具本体から延設される電源部と、灯具本体を取付孔に固定する固定手段として取付バネを備えたものが知られている。例えば、特許文献１の如くである。 Conventionally, an embedded lighting fixture such as a downlight that is attached to a mounting hole formed in a ceiling or the like is known. This type of embedded lighting fixture includes a light source unit arranged in the mounting hole in the irradiation direction, a lamp body having the light source unit, a power supply unit extending from the lamp body, and a lamp body. As a fixing means for fixing to a mounting hole, one equipped with a mounting spring is known. For example, as in Patent Document 1.

特許文献１には、円柱形状の枠体の下端に鍔部材が取り付けられ、枠体の側面には複数個（特許文献１の図１では、３個）の取付バネが放射状に外側へ張り出して設けられた埋込型照明器具が開示されている。この照明器具は、天井の下面に鍔部材を当接させ、側面視で略Ｖ字状に屈曲された取付バネが開いて天井の上面（天井裏）を下方へ押圧することにより、鍔部材と取付バネとで天井を挟んで取り付けられる。 In Patent Document 1, a flange member is attached to the lower end of a cylindrical frame, and a plurality of attachment springs (three in FIG. 1 of Patent Document 1) radiate outward on the side surface of the frame. The provided embedded lighting fixtures are disclosed. In this luminaire, the collar member is brought into contact with the lower surface of the ceiling, and the mounting spring bent in a substantially V shape in the side view opens to press the upper surface (behind the ceiling) of the ceiling downward to form the collar member. It can be mounted by sandwiching the ceiling with a mounting spring.

特開２０１３－１１４８１３号公報Japanese Unexamined Patent Publication No. 2013-114913

特許文献１に記載の埋込型照明器具の取付バネが天井の上面を下方へ押圧する力は、天井に対する取付バネの接触角度が直角に近づくにつれて小さくなる。一方、天井に対する取付バネの角度は、屈曲部から天井の上面との接触位置までの長さによって定まる。つまり、取付バネによる灯具本体の保持力は、天井の板厚によって変動する。また、埋込型照明器具は、灯具本体と取付孔との隙間に屈曲部を有する側面視Ｖ字状の取付バネを配置する構造であるため、灯具本体と取付孔との隙間を塞ぐ鍔部材の幅が大きくなり灯具本体が大型化する点で不利であった。 The force with which the mounting spring of the embedded lighting fixture described in Patent Document 1 presses the upper surface of the ceiling downward decreases as the contact angle of the mounting spring with respect to the ceiling approaches a right angle. On the other hand, the angle of the mounting spring with respect to the ceiling is determined by the length from the bent portion to the contact position with the upper surface of the ceiling. That is, the holding force of the lamp body by the mounting spring varies depending on the thickness of the ceiling plate. Further, since the embedded lighting fixture has a structure in which a V-shaped mounting spring having a bent portion is arranged in the gap between the lamp body and the mounting hole, a flange member that closes the gap between the lamp body and the mounting hole. It was disadvantageous in that the width of the lamp became wider and the main body of the lamp became larger.

そこで、本発明は、上記課題に鑑みてなされたものであり、天井等の取付部の板厚による保持力の変動を抑制するとともに、灯具本体の大型化を抑制することができる照明器具を提供することを目的とする。 Therefore, the present invention has been made in view of the above problems, and provides a lighting fixture capable of suppressing fluctuations in the holding force due to the plate thickness of a mounting portion such as a ceiling and suppressing an increase in the size of the lamp body. The purpose is to do.

本発明の解決しようとする課題は以上の如くであり、次にこの課題を解決するための手段を説明する。 The problem to be solved by the present invention is as described above, and next, the means for solving this problem will be described.

すなわち、本願に開示する照明器具は、灯具と、前記灯具を取付孔に取り付けるための取付バネを備える照明器具であって、前記取付バネは、ぜんまいバネから構成され、前記ぜんまいバネの板面を前記灯具の取付孔への挿入方向に向け、前記灯具の側方に突出させた状態で、前記ぜんまいバネが前記灯具の側部に固定されるものである。 That is, the luminaire disclosed in the present application is a luminaire including a lamp and a mounting spring for mounting the lamp in a mounting hole, and the mounting spring is composed of a zenmai spring and has a plate surface of the zenmai spring. The zenmai spring is fixed to the side portion of the lamp in a state of projecting to the side of the lamp in the direction of insertion into the mounting hole of the lamp.

本発明によれば、ぜんまいバネの巻回部が天井等の取付部を照射方向へ常に押圧しているので取付部の板厚によって力の方向が変化しない。また、灯具本体と取付孔との隙間には、ぜんまいバネを形成している帯状の部材のみが配置される構成なので隙間の大きさが抑制される。これにより、天井等の取付部の板厚による保持力の変動を抑制するとともに、灯具本体の大型化を抑制することができる。 According to the present invention, since the winding portion of the mainspring always presses the mounting portion such as the ceiling in the irradiation direction, the direction of the force does not change depending on the plate thickness of the mounting portion. Further, since only the band-shaped member forming the mainspring is arranged in the gap between the lamp body and the mounting hole, the size of the gap is suppressed. As a result, it is possible to suppress fluctuations in the holding force due to the thickness of the mounting portion such as the ceiling, and to suppress the increase in size of the lamp body.

本発明の一実施形態に係る埋込型照明器具を示す平面図。The plan view which shows the embedded lighting fixture which concerns on one Embodiment of this invention. 図１のＡ－Ａ線における断面図であり、埋込型照明器具を取付穴に取り付けた状態を示す断面図。FIG. 1 is a cross-sectional view taken along the line AA of FIG. 1, which is a cross-sectional view showing a state in which an embedded lighting fixture is attached to a mounting hole. 本発明の一実施形態に係る埋込型照明器具の灯具部分の部分断面図。FIG. 3 is a partial cross-sectional view of a lamp portion of an embedded lighting fixture according to an embodiment of the present invention. （ａ）本発明の一実施形態に係る埋込型照明器具の仮止め機構を示す部分拡大断面図、（ｂ）同じく仮止め機構を示す部分拡大側面図。(A) A partially enlarged cross-sectional view showing a temporary fixing mechanism of an embedded lighting fixture according to an embodiment of the present invention, and (b) a partially enlarged side view showing the temporary fixing mechanism. （ａ）本発明の一実施形態に係る埋込型照明器具において取付バネが仮止めされた状態を示す側面図、（ｂ）同じく仮止めされた取付バネが取付孔に挿入されている状態を示す側面図。(A) A side view showing a state in which the mounting spring is temporarily fixed in the embedded lighting fixture according to the embodiment of the present invention, and (b) a state in which the temporarily fixed mounting spring is inserted into the mounting hole. Side view shown. （ａ）本発明の一実施形態に係る埋込型照明器具において取付バネの仮止めが解除された状態を示す側面図、（ｂ）同じく取付バネが天井に係止された状態を示す側面図。(A) A side view showing a state in which the temporary fixing of the mounting spring is released in the embedded lighting fixture according to the embodiment of the present invention, and (b) a side view showing a state in which the mounting spring is also locked to the ceiling. .. 本発明の一実施形態に係る埋込型照明器具が取付バネによって天井から支持されている状態を示す側面図。The side view which shows the state which the embedded lighting fixture which concerns on one Embodiment of this invention is supported from the ceiling by the mounting spring.

本発明の実施形態に係る照明器具の一例である埋込型照明器具１について、図１から図４を用いて説明する。埋込型照明器具１は、例えば、取付部となる天井Ｂに形成された円形の取付孔Ｈに埋め込まれて設置されるダウンライトである。なお、取付孔Ｈは円形に限らない。以下の説明では、埋込型照明器具１の上下方向は、埋込型照明器具１が天井Ｂに設置された状態における上下方向として説明する。上下方向に直交する方向を径方向として説明する。また、本実施形態の説明において、上方から埋込型照明器具１等を視た状態を平面視とする。上下方向に対して直交方向から埋込型照明器具１等を視た状態を側面視とする。埋込型照明器具１等の断面形状を視た状態を断面視とする。 An embedded lighting fixture 1, which is an example of a lighting fixture according to an embodiment of the present invention, will be described with reference to FIGS. 1 to 4. The embedded lighting fixture 1 is, for example, a downlight embedded and installed in a circular mounting hole H formed in a ceiling B serving as a mounting portion. The mounting hole H is not limited to a circular shape. In the following description, the vertical direction of the embedded lighting fixture 1 will be described as the vertical direction in the state where the embedded lighting fixture 1 is installed on the ceiling B. The direction orthogonal to the vertical direction will be described as the radial direction. Further, in the description of the present embodiment, the state in which the embedded lighting fixture 1 and the like are viewed from above is defined as a plan view. The state in which the embedded lighting fixture 1 and the like are viewed from a direction orthogonal to the vertical direction is defined as a side view. The state in which the cross-sectional shape of the embedded lighting fixture 1 or the like is viewed is referred to as a cross-sectional view.

図１から図３に示すように、埋込型照明器具１は、灯具２と、電源部１１とを主に備える。 As shown in FIGS. 1 to 3, the embedded lighting fixture 1 mainly includes a lamp fixture 2 and a power supply unit 11.

灯具２は、器具本体３、光源部４（図２参照）、第１反射部６（図２参照）、パネル（図２参照）７、第２反射部８（図２参照）、及び取付バネ９を主に有している。 The lamp 2 includes an instrument main body 3, a light source unit 4 (see FIG. 2), a first reflection unit 6 (see FIG. 2), a panel (see FIG. 2) 7, a second reflection unit 8 (see FIG. 2), and a mounting spring. Mainly has 9.

図２と図３とに示すように、器具本体３は、光源部４、第１反射部６、第２反射部８、パネル７等を支持するものである。器具本体３は、放熱効率を向上させるために熱伝導率の高いアルミニウム等の金属素材で形成されている。すなわち、器具本体３は、ヒートシンクとしての機能を有する。器具本体３は、基部３ａと、放熱フィン３ｂと、光源配置部３ｃと、電源取付部３ｄと、を有している。 As shown in FIGS. 2 and 3, the instrument main body 3 supports a light source unit 4, a first reflection unit 6, a second reflection unit 8, a panel 7, and the like. The instrument body 3 is made of a metal material such as aluminum having high thermal conductivity in order to improve heat dissipation efficiency. That is, the instrument body 3 has a function as a heat sink. The appliance main body 3 has a base portion 3a, a heat radiation fin 3b, a light source arrangement portion 3c, and a power supply mounting portion 3d.

基部３ａは、器具本体３のベースとなる部分である。基部３ａは、下方が開口している有底の略円筒状に形成されている。基部３ａの上部外側には、平面視において互いが略平行をなすとともに、上方に立設する複数の放熱フィン３ｂ・３ｂ・・・が形成されている。また、基部３ａの上部内側には、光源部４を配置するための光源配置部３ｃが形成されている。つまり、基部３ａには、放熱フィン３ｂと光源配置部３ｃとが対向するように配置されている。 The base portion 3a is a portion to be a base of the instrument main body 3. The base portion 3a is formed in a bottomed substantially cylindrical shape with an opening at the bottom. On the outer side of the upper part of the base portion 3a, a plurality of heat radiation fins 3b, 3b ... Are formed so as to be substantially parallel to each other in a plan view and to be erected above. Further, a light source arranging portion 3c for arranging the light source portion 4 is formed inside the upper portion of the base portion 3a. That is, the heat radiating fins 3b and the light source arranging portion 3c are arranged so as to face each other on the base portion 3a.

放熱フィン３ｂは、基部３ａ上から複数突出して形成される板状の放熱部材ある。光源配置部３ｃに配置されている光源部４から発した熱は、基部３ａを介して器具本体３の全体に伝わる。器具本体３に伝わった熱は、主に放熱フィン３ｂから空気中へ放散される。 The heat radiating fins 3b are plate-shaped heat radiating members formed so as to project from above the base portion 3a. The heat generated from the light source unit 4 arranged in the light source arrangement unit 3c is transmitted to the entire instrument main body 3 via the base portion 3a. The heat transferred to the instrument body 3 is mainly dissipated into the air from the heat radiation fins 3b.

電源取付部３ｄは、放熱フィン３ｂの側方部に形成されている。電源取付部３ｄは、ネジ等の固定部材によって電源部１１が取り付けられるものである。電源取付部３ｄの下側には、電線１３を通すための外側面が開放された空間３ｅが設けられている。 The power supply mounting portion 3d is formed on the side portion of the heat radiation fin 3b. The power supply unit 3d is for attaching the power supply unit 11 by a fixing member such as a screw. Below the power supply mounting portion 3d, a space 3e having an open outer surface for passing the electric wire 13 is provided.

光源部４は、埋込型照明器具１の照射面側に向けて光を出射するものである。光源部４は、発光素子としてＬＥＤ素子を備えたモジュール基板から構成されている。光源部４は、器具本体３の光源配置部３ｃに設けられている。光源部４は、器具本体３の光源配置部３ｃに当接して配置され、光源部４の中央部が固定部材であるネジ５により固定されている。光源部４は、電線１３によって電源部１１と電気的に接続されている。光源部４は、点灯時に発熱したＬＥＤ素子からの熱を光源配置部３ｃに伝達する。光源部４は、熱伝導性シート（図示せず）や放熱グリスを介して光源配置部３ｃに取り付けてもよく、これにより、より高い放熱性を得ることができる。 The light source unit 4 emits light toward the irradiation surface side of the embedded lighting fixture 1. The light source unit 4 is composed of a module substrate provided with an LED element as a light emitting element. The light source unit 4 is provided in the light source arrangement unit 3c of the instrument main body 3. The light source unit 4 is arranged in contact with the light source arrangement unit 3c of the instrument main body 3, and the central portion of the light source unit 4 is fixed by a screw 5 which is a fixing member. The light source unit 4 is electrically connected to the power supply unit 11 by an electric wire 13. The light source unit 4 transfers the heat generated from the LED element generated during lighting to the light source arrangement unit 3c. The light source unit 4 may be attached to the light source arrangement unit 3c via a heat conductive sheet (not shown) or thermal paste, whereby higher heat dissipation can be obtained.

なお、本実施形態では、光源部４の中央部をネジ５により固定しているが、特に限定するものではない。例えば、光源部４においてＬＥＤ素子が配置された発光領域内の任意の部分を固定部材により固定する構成とすることもできる。
また、本実施形態では、光源としてＬＥＤ素子（表面実装タイプのＬＥＤ素子）を用いたが、光源の種類はＬＥＤ素子に限定されず、例えばＣＯＢ型発光モジュールや有機ＥＬ素子（ＯＬＥＤ）などであっても実現可能である。 In the present embodiment, the central portion of the light source portion 4 is fixed by the screw 5, but the present invention is not particularly limited. For example, the light source unit 4 may be configured to fix an arbitrary portion in the light emitting region in which the LED element is arranged by a fixing member.
Further, in the present embodiment, an LED element (surface mount type LED element) is used as a light source, but the type of the light source is not limited to the LED element, for example, a COB type light emitting module or an organic EL element (OLED). Is feasible.

第１反射部６は、光源部４とパネル７とを所定間隔で離間しつつ、複数のＬＥＤ素子からの光を反射する笠状部材である。第１反射部６は、樹脂素材等で形成される。第１反射部６は、器具本体３の光源配置部３ｃに固定されている。第１反射部６は、下方に行くに従って広がる斜面状に形成されている。第１反射部６の内周面は、ＬＥＤ素子から発光される光を反射する反射面となっている。第１反射部６は、ＬＥＤ素子の下方以外の方向に出た光を反射させて、ＬＥＤ素子から発光される光を下方に効率よく集光するように構成されている。なお、本実施形態の第１反射部６としては、下方に行くに従って広がる斜面状に形成したものを説明したが、これに限定されない。例えば、反射部の形状として、周壁部８ａが下方に行くに従って広がる放物面状に形成されるものであっても良い。 The first reflecting unit 6 is a cap-shaped member that reflects light from a plurality of LED elements while separating the light source unit 4 and the panel 7 at predetermined intervals. The first reflective portion 6 is made of a resin material or the like. The first reflecting portion 6 is fixed to the light source arranging portion 3c of the instrument main body 3. The first reflecting portion 6 is formed in a slope shape that expands as it goes downward. The inner peripheral surface of the first reflecting unit 6 is a reflecting surface that reflects the light emitted from the LED element. The first reflecting unit 6 is configured to reflect light emitted in a direction other than below the LED element and efficiently collect the light emitted from the LED element downward. The first reflecting portion 6 of the present embodiment has been described as being formed in a slope shape that expands toward the bottom, but the present invention is not limited to this. For example, the shape of the reflective portion may be such that the peripheral wall portion 8a is formed in a parabolic shape that expands as it goes downward.

パネル７は、器具本体３の光源配置部３ｃ内に配置されたＬＥＤ素子からの光を透過及び拡散させて、照射面を形成する部材である。パネル７は、透光性を有する樹脂素材やガラス素材等で形成される。本実施形態においては、パネル７は、アクリル樹脂を用いて形成されている。パネル７は、平面視形状が円形で下方に突出するドーム状に形成されている。パネル７は、第２反射部８に位置決めされるとともに、第１反射部６の下端と第２反射部８の上端のパネル保持部８ｂとで挟持され、ＬＥＤ素子に対向する位置に保持される。
なお、パネル７の形状は、円形形状に限らず、四角形等の多角形でも良い。また、下方に突出するドーム状に限らず、上方に突出する形状や平面状等でも良い。 The panel 7 is a member that forms an irradiation surface by transmitting and diffusing light from an LED element arranged in the light source arrangement portion 3c of the instrument main body 3. The panel 7 is made of a translucent resin material, a glass material, or the like. In this embodiment, the panel 7 is formed by using an acrylic resin. The panel 7 has a circular shape in a plan view and is formed in a dome shape protruding downward. The panel 7 is positioned by the second reflecting portion 8 and is sandwiched between the lower end of the first reflecting portion 6 and the panel holding portion 8b at the upper end of the second reflecting portion 8 and held at a position facing the LED element. ..
The shape of the panel 7 is not limited to a circular shape, but may be a polygon such as a quadrangle. Further, the shape is not limited to a dome shape protruding downward, but may be a shape protruding upward, a flat shape, or the like.

第２反射部８は、パネル７を中心にして下方に向かって椀状に開いた形状の光源用リフレクターである。第２反射部８は、周壁部８ａ、パネル保持部８ｂ、フランジ部８ｃ、バネ取付部８ｄ及び係止部８ｅを有している。第２反射部８は、図示しないネジ等の固定部材によって器具本体３の下側に固定されている。 The second reflecting portion 8 is a reflector for a light source having a shape that opens downward in a bowl shape with the panel 7 as the center. The second reflecting portion 8 has a peripheral wall portion 8a, a panel holding portion 8b, a flange portion 8c, a spring mounting portion 8d, and a locking portion 8e. The second reflective portion 8 is fixed to the lower side of the instrument main body 3 by a fixing member such as a screw (not shown).

第２反射部８は、周壁部８ａを有する円筒状に形成されている。周壁部８ａは、下方に行くに従って広がる放物面状に形成される。周壁部８ａの内周面は、ＬＥＤ素子から発光される光を反射する反射面となっている。第２反射部８は、樹脂素材や金属素材等を用いて形成されている。本実施形態においては、アルミ等の金属素材を用いて第２反射部８を形成した。第２反射部８は、その断面形状において上面側及び下面側が開口形成されている。 The second reflecting portion 8 is formed in a cylindrical shape having a peripheral wall portion 8a. The peripheral wall portion 8a is formed in a parabolic shape that expands toward the bottom. The inner peripheral surface of the peripheral wall portion 8a is a reflecting surface that reflects the light emitted from the LED element. The second reflecting portion 8 is formed by using a resin material, a metal material, or the like. In the present embodiment, the second reflective portion 8 is formed by using a metal material such as aluminum. The second reflecting portion 8 has an opening on the upper surface side and the lower surface side in its cross-sectional shape.

パネル保持部８ｂは、パネル７を保持する断面視Ｌ字状の部分である。パネル保持部８ｂは、周壁部８ａの上端に設けられている。パネル７は、パネル保持部８ｂに係止されることで第２反射部８の上端に位置決めされる。なお、第２反射部８の平面視形状は、円形形状に限らず、四角形等の多角形でもよく、種々の取付孔の開口形状に取り付け可能な形状であってもよい。 The panel holding portion 8b is an L-shaped portion in cross-sectional view that holds the panel 7. The panel holding portion 8b is provided at the upper end of the peripheral wall portion 8a. The panel 7 is positioned at the upper end of the second reflecting portion 8 by being locked to the panel holding portion 8b. The plan view shape of the second reflecting portion 8 is not limited to a circular shape, but may be a polygonal shape such as a quadrangle, or may be a shape that can be mounted in various mounting hole opening shapes.

フランジ部８ｃは、周壁部８ａの下部の外周縁から径方向外側に突出して環状に形成される鍔部である。フランジ部８ｃは、埋込型照明器具１を天井Ｂの取付孔Ｈに設置した状態で取付孔Ｈの周縁部を覆う部分である。つまり、フランジ部８ｃは、取付孔Ｈと灯具２（周壁部８ａ）との隙間を覆うように構成されている。 The flange portion 8c is a flange portion formed in an annular shape so as to project radially outward from the outer peripheral edge of the lower portion of the peripheral wall portion 8a. The flange portion 8c is a portion that covers the peripheral edge portion of the mounting hole H in a state where the embedded lighting fixture 1 is installed in the mounting hole H of the ceiling B. That is, the flange portion 8c is configured to cover the gap between the mounting hole H and the lamp 2 (peripheral wall portion 8a).

図３に示すように、バネ取付部８ｄは、取付バネ９を第２反射部８に取り付ける部分である。バネ取付部８ｄは、第２反射部８の下端部から径方向外側に突出して形成されている。なお、バネ取付部８ｄが第２反射部８から突出していることは必須ではない。バネ取付部８ｄは、第２反射部８の周壁部８ａの周縁に略均等配置されるように複数個（本実施形態においては２個が対向して）設けられている。なお、バネ取付部８ｄは、周壁部８ａの周縁に均等配置されていることは必須ではない。バネ取付部８ｄは、径方向外側面を取付面として、取付バネ９を固定するためのネジ孔が形成されている。 As shown in FIG. 3, the spring mounting portion 8d is a portion for mounting the mounting spring 9 to the second reflecting portion 8. The spring mounting portion 8d is formed so as to project radially outward from the lower end portion of the second reflecting portion 8. It is not essential that the spring mounting portion 8d protrudes from the second reflecting portion 8. A plurality of spring mounting portions 8d are provided (two facing each other in the present embodiment) so as to be substantially evenly arranged on the peripheral edge of the peripheral wall portion 8a of the second reflecting portion 8. It is not essential that the spring mounting portions 8d are evenly arranged on the peripheral edge of the peripheral wall portion 8a. The spring mounting portion 8d is formed with a screw hole for fixing the mounting spring 9 with the radial outer surface as the mounting surface.

係止部８ｅは、取付バネ９を仮止めするものである。係止部８ｅは、取付バネ９の被係止部９ｄとともに仮止め機構を構成している。係止部８ｅは、取付バネ９を第２反射部８側に寄せて仮固定するように構成されている。係止部８ｅは、バネ取付部８ｄの上方であって、周壁部８ａから径方向外側に突出して形成されている。係止部８ｅは、バネ取付部８ｄの取付面よりも径方向内側に配置されている。つまり、係止部８ｅは、取付バネ９をバネ取付部８ｄの取付面よりも径方向内側に引き寄せた状態で仮止めするように構成されている。 The locking portion 8e temporarily fixes the mounting spring 9. The locking portion 8e constitutes a temporary fixing mechanism together with the locked portion 9d of the mounting spring 9. The locking portion 8e is configured so that the mounting spring 9 is brought closer to the second reflecting portion 8 side and temporarily fixed. The locking portion 8e is above the spring mounting portion 8d and is formed so as to project radially outward from the peripheral wall portion 8a. The locking portion 8e is arranged radially inside the mounting surface of the spring mounting portion 8d. That is, the locking portion 8e is configured to temporarily fasten the mounting spring 9 in a state of being pulled inward in the radial direction from the mounting surface of the spring mounting portion 8d.

図４（ａ）と図４（ｂ）とに示すように、取付バネ９は、埋込型照明器具１を天井Ｂの取付孔Ｈに埋め込んで取り付けるための固定手段である。取付バネ９は、第２反射部８の周壁部８ａに対向配置されたバネ取付部８ｄにそれぞれ固定されている。取付バネ９は、ぜんまいバネから構成されている。また、取付バネ９は、巻回した部分から引き出した長さ（延伸量）に関わらず、ほぼ一定のばね荷重が生じるように形成された定荷重ぜんまいバネである。取付バネ９は、渦巻状に巻回されている巻回部９ａと、巻回部９ａの外側の端部である固定部９ｂと、巻回部９ａの内側の端部である抜止め部９ｃと、仮止め機構を構成する被係止部９ｄを有する。 As shown in FIGS. 4A and 4B, the mounting spring 9 is a fixing means for embedding and mounting the embedded lighting fixture 1 in the mounting hole H of the ceiling B. The mounting spring 9 is fixed to each of the spring mounting portions 8d arranged to face the peripheral wall portion 8a of the second reflecting portion 8. The mounting spring 9 is composed of a mainspring. Further, the mounting spring 9 is a constant load spring formed so that a substantially constant spring load is generated regardless of the length (stretching amount) drawn from the wound portion. The mounting spring 9 includes a winding portion 9a that is spirally wound, a fixing portion 9b that is an outer end portion of the winding portion 9a, and a retaining portion 9c that is an inner end portion of the winding portion 9a. And has a locked portion 9d constituting the temporary fixing mechanism.

巻回部９ａは、バネ荷重を生じさせる部分である。巻回部９ａは、ステンレス素材等からなる帯状の金属部材をその中心線が平面上で渦巻状になるように巻回して形成されている。つまり、巻回部９ａは、帯状の金属部材が板面を径方向外側に向けて巻回されることで、円筒状の外周面が形成されている。 The winding portion 9a is a portion that generates a spring load. The winding portion 9a is formed by winding a strip-shaped metal member made of a stainless steel material or the like so that its center line spirals on a plane. That is, the winding portion 9a is formed with a cylindrical outer peripheral surface by winding the strip-shaped metal member with the plate surface directed outward in the radial direction.

固定部９ｂは、灯具２に取り付けられる部分である。固定部９ｂは、巻回部９ａの最も外側の帯状の金属部材が所定長さだけ平面状に延出された部分である。固定部９ｂには、図示しないネジ孔が形成されている。つまり、固定部９ｂは、平坦な板面を第２反射部８のバネ取付部８ｄに接触させて第２反射部８に取り付けられるように構成されている。 The fixing portion 9b is a portion attached to the lamp 2. The fixing portion 9b is a portion in which the outermost strip-shaped metal member of the winding portion 9a is extended in a plane by a predetermined length. A screw hole (not shown) is formed in the fixing portion 9b. That is, the fixing portion 9b is configured so that the flat plate surface is brought into contact with the spring mounting portion 8d of the second reflecting portion 8 and mounted on the second reflecting portion 8.

抜止め部９ｃは、灯具２の天井Ｂからの落下を防止するものである。抜止め部９ｃは、灯具２が取付孔Ｈから抜け落ちて取付バネ９が伸びきった場合に、天井Ｂに引っ掛かることで天井Ｂから灯具２が落下しないようにするものである。抜止め部９ｃは、巻回部９ａの内側の端部が鉤状に折り曲げられて形成されている。抜止め部９ｃは、巻回部９ａが全て引き出された場合に抜止め部９ｃが天井Ｂに係止されて、天井Ｂと取付バネ９との接触状態を維持するように構成されている。なお、取付バネ９の取付位置、本数等については、本実施形態のものに限定されない。 The retaining portion 9c prevents the lamp 2 from falling from the ceiling B. The retaining portion 9c prevents the lamp 2 from falling from the ceiling B by being caught on the ceiling B when the lamp 2 falls out of the mounting hole H and the mounting spring 9 is fully extended. The retaining portion 9c is formed by bending the inner end portion of the winding portion 9a into a hook shape. The retaining portion 9c is configured so that when all the winding portions 9a are pulled out, the retaining portion 9c is locked to the ceiling B to maintain the contact state between the ceiling B and the mounting spring 9. The mounting position, number, and the like of the mounting springs 9 are not limited to those of the present embodiment.

被係止部９ｄは、第２反射部８の係止部８ｅに係止される部分である。被係止部９ｄは、取付バネ９の係止部８ｅとともに仮止め機構を構成している。被係止部９ｄは、取付バネ９に形成されている矩形の貫通孔から構成されている。取付バネ９は、巻回部９ａを周壁部８ａに寄せた状態で、被係止部９ｄの上側周縁が係止部８ｅに係止されるように構成されている。なお、被係止部９ｄは、係止部８ｅに係止されれば、形状が矩形であること、および貫通孔で構成されていることは必須ではない。 The locked portion 9d is a portion locked to the locking portion 8e of the second reflecting portion 8. The locked portion 9d constitutes a temporary fixing mechanism together with the locking portion 8e of the mounting spring 9. The locked portion 9d is composed of a rectangular through hole formed in the mounting spring 9. The mounting spring 9 is configured such that the upper peripheral edge of the locked portion 9d is locked to the locking portion 8e in a state where the winding portion 9a is brought close to the peripheral wall portion 8a. If the locked portion 9d is locked to the locking portion 8e, it is not essential that the locked portion 9d has a rectangular shape and is composed of through holes.

図３に示すように、二個の取付バネ９は、巻回部９ａの外周面の一部を灯具２の取付孔Ｈへの挿入方向に向け、巻回部９ａを器具本体３の側方に突出させた状態で、固定部９ｂが第２反射部８のバネ取付部８ｄにネジ１０により固定されている。この際、巻回部９ａは、第２反射部８の径方向の直線と巻回部９ａの径方向の直線とが一致するように配置されている。つまり、取付バネ９は、巻回部９ａが第２反射部８から最も突出する向きで、巻回部９ａの巻き込み方向が灯具２の取付孔Ｈへの挿入方向である上下方向になるようにして、灯具２の側方に配置されている。これにより、取付バネ９は、巻回部９ａが上下方向に伸縮可能な状態で第２反射部８の側方に固定されている。また、対向配置されている取付バネ９の巻回部９ａの中心間の長さＬｃは、取付孔Ｈの直径Ｄよりも大きくなるように構成されている。つまり、取付バネ９は、巻回部９ａと天井Ｂとの接触点Ｐの鉛直線上に巻回部９ａの中心Ｃが配置されている。 As shown in FIG. 3, the two mounting springs 9 have a part of the outer peripheral surface of the winding portion 9a directed in the insertion direction of the lamp 2 into the mounting hole H, and the winding portion 9a is lateral to the fixture body 3. The fixing portion 9b is fixed to the spring mounting portion 8d of the second reflecting portion 8 by the screw 10 in a state of being projected to the above. At this time, the winding portion 9a is arranged so that the radial straight line of the second reflecting portion 8 and the radial straight line of the winding portion 9a coincide with each other. That is, the mounting spring 9 has the winding portion 9a in the direction in which the winding portion 9a protrudes most from the second reflecting portion 8, and the winding direction of the winding portion 9a is the vertical direction which is the insertion direction of the lamp 2 into the mounting hole H. It is arranged on the side of the lamp 2. As a result, the mounting spring 9 is fixed to the side of the second reflecting portion 8 in a state where the winding portion 9a can be expanded and contracted in the vertical direction. Further, the length Lc between the centers of the winding portions 9a of the mounting springs 9 arranged so as to face each other is configured to be larger than the diameter D of the mounting holes H. That is, in the mounting spring 9, the center C of the winding portion 9a is arranged on the vertical line of the contact point P between the winding portion 9a and the ceiling B.

図２に示すように、電源部１１は、光源部４が有するＬＥＤ素子に給電を行って、ＬＥＤ素子を点灯させるための電源装置である。電源部１１は、器具本体３の電源取付部３ｄにネジ等の締結部材により取り付けられている。電源部１１は、電源ケース内に直方形状に加工されたプリント配線基板上に複数の電子部品が実装された電源回路が収容されたものである。複数の電子部品は、動作時に発熱する部品が含まれている。電源部１１は、外部商用電源から供給される交流電流を所定の直流電流に変換し、変換後の電流を光源部４に実装された複数のＬＥＤ素子に供給する。電源部１１は、配線（図示せず）を介して端子台１２に電気的に接続されている。端子台１２は、電源部１１の一側面に配置されている。埋込型照明器具１を天井Ｂに取り付ける際、配線（図示せず）により端子台１２と天井Ｂの上側の外部商用電源（図示せず）とを接続することで、電源部１１は外部商用電源と電気的に接続される。電源部１１と光源部４は電線１３によって電気的に接続されている。なお、電源部１１の具体構成および器具本体３への取付構造は、本実施形態の構成に限定されない。 As shown in FIG. 2, the power supply unit 11 is a power supply device for supplying power to the LED element included in the light source unit 4 to light the LED element. The power supply unit 11 is attached to the power supply mounting unit 3d of the instrument main body 3 by a fastening member such as a screw. The power supply unit 11 accommodates a power supply circuit in which a plurality of electronic components are mounted on a printed wiring board processed into a rectangular shape in a power supply case. A plurality of electronic components include components that generate heat during operation. The power supply unit 11 converts an alternating current supplied from an external commercial power source into a predetermined direct current, and supplies the converted current to a plurality of LED elements mounted on the light source unit 4. The power supply unit 11 is electrically connected to the terminal block 12 via wiring (not shown). The terminal block 12 is arranged on one side surface of the power supply unit 11. When the embedded lighting fixture 1 is attached to the ceiling B, the power supply unit 11 is externally commercialized by connecting the terminal block 12 and the external commercial power supply (not shown) above the ceiling B by wiring (not shown). It is electrically connected to the power supply. The power supply unit 11 and the light source unit 4 are electrically connected by an electric wire 13. The specific configuration of the power supply unit 11 and the mounting structure to the instrument main body 3 are not limited to the configuration of the present embodiment.

次に、図５から図７を用いて、埋込型照明器具１の取り付け方法と、埋込型照明器具１を取り付ける際の取付バネ９の仮止め機構について説明する。天井Ｂに対して図示上側が天井裏の空間とし、天井Ｂに対して図示下側が居室空間とする。
埋込型照明器具１は、居室空間である天井Ｂの下側から取付孔Ｈに電源部１１を挿入後に灯具２が取付孔Ｈに挿入され、取り付けられるものである。なお、以下の説明において、埋込型照明器具１は、既に電源部１１が取付孔Ｈに挿入されているものとし、便宜上、電源部１１の取り付け説明および図示を省略するものとする。 Next, a method of mounting the embedded lighting fixture 1 and a temporary fixing mechanism of the mounting spring 9 when mounting the embedded lighting fixture 1 will be described with reference to FIGS. 5 to 7. The upper side of the figure with respect to the ceiling B is the space behind the ceiling, and the lower side of the figure with respect to the ceiling B is the living room space.
The embedded lighting fixture 1 is mounted by inserting the lamp 2 into the mounting hole H after inserting the power supply unit 11 into the mounting hole H from the lower side of the ceiling B, which is a living room space. In the following description, it is assumed that the power supply unit 11 has already been inserted into the mounting hole H of the embedded lighting fixture 1, and the mounting description and illustration of the power supply unit 11 will be omitted for convenience.

図５（ａ）に示すように、埋込型照明器具１は、第２反射部８の係止部８ｅに取付バネ９の被係止部９ｄが仮止めされている。取付バネ９は、巻回部９ａが第２反射部８側に向かって寄せられ、被係止部９ｄが係止部８ｅに係止されている。つまり、取付バネ９は、巻回部９ａと固定部９ｂとの間で第２反射部８の径方向内側に向かって弾性変形されている。これにより、取付バネ９には、変形前の形状に戻ろうとする径方向外側に向かう復元力が生じている（黒塗矢印参照）。取付バネ９は、巻回部９ａが第２反射部８の周壁部８ａに接触した状態で仮止めされている。この際、対向配置されている二個の取付バネ９の巻回部９ａ間の最大長さＬｍａｘは、取付孔Ｈの直径Ｄよりも大きい。一方、巻回部９ａの中心間の長さＬｃは、取付孔Ｈの直径Ｄよりも小さい。このように構成することで、埋込型照明器具１は、取付バネ９の巻回部９ａの外周面うち径方向外側の曲面が取付孔Ｈの下側の周縁部に対向した状態で取付孔Ｈに挿入される。灯具２は、器具本体３の放熱フィン３ｂ側から取付孔Ｈに挿入される。取付バネ９の巻回部９ａは、灯具２の取付孔Ｈへの挿入によって取付孔Ｈの下側の周縁部に接触する。 As shown in FIG. 5A, in the embedded lighting fixture 1, the locked portion 9d of the mounting spring 9 is temporarily fixed to the locking portion 8e of the second reflecting portion 8. In the mounting spring 9, the winding portion 9a is moved toward the second reflecting portion 8 side, and the locked portion 9d is locked to the locking portion 8e. That is, the mounting spring 9 is elastically deformed inward in the radial direction between the winding portion 9a and the fixing portion 9b. As a result, the mounting spring 9 has a restoring force toward the outer side in the radial direction that tends to return to the shape before deformation (see the black-painted arrow). The mounting spring 9 is temporarily fixed in a state where the winding portion 9a is in contact with the peripheral wall portion 8a of the second reflecting portion 8. At this time, the maximum length Lmax between the winding portions 9a of the two mounting springs 9 arranged so as to face each other is larger than the diameter D of the mounting holes H. On the other hand, the length Lc between the centers of the winding portion 9a is smaller than the diameter D of the mounting hole H. With this configuration, the embedded lighting fixture 1 has a mounting hole in a state where the curved surface on the outer peripheral surface of the winding portion 9a of the mounting spring 9 faces the lower peripheral edge portion of the mounting hole H. It is inserted in H. The lamp 2 is inserted into the mounting hole H from the heat radiation fin 3b side of the instrument main body 3. The winding portion 9a of the mounting spring 9 comes into contact with the lower peripheral edge portion of the mounting hole H by inserting the lamp 2 into the mounting hole H.

図５（ｂ）に示すように、埋込型照明器具１は、取付バネ９の巻回部９ａが取付孔Ｈの周縁部に接触すると、巻回部９ａの外周面の作用により巻回部９ａが径方向内側に弾性変形される。つまり、取付バネ９は、巻回部９ａの外周面がガイドとして作用する。巻回部９ａは、取付孔Ｈの周縁よりも径方向外側に突出している部分が取付孔Ｈに向かって押しこまれる（黒塗矢印参照）。埋込型照明器具１は、取付バネ９の巻回部９ａが取付孔Ｈの内周面と第２反射部８の周壁部８ａに挟まれた状態で取付孔Ｈに挿入される。このように、埋込型照明器具１は、取付バネ９を第２反射部８に仮止めすることで、作業者の手で取付孔Ｈに挿入可能な状態に押さえることなく取付バネ９が取付孔Ｈに案内される。 As shown in FIG. 5B, in the embedded lighting fixture 1, when the winding portion 9a of the mounting spring 9 comes into contact with the peripheral edge portion of the mounting hole H, the winding portion is affected by the action of the outer peripheral surface of the winding portion 9a. 9a is elastically deformed inward in the radial direction. That is, in the mounting spring 9, the outer peripheral surface of the winding portion 9a acts as a guide. In the winding portion 9a, a portion protruding outward in the radial direction from the peripheral edge of the mounting hole H is pushed toward the mounting hole H (see the black arrow). The embedded lighting fixture 1 is inserted into the mounting hole H in a state where the winding portion 9a of the mounting spring 9 is sandwiched between the inner peripheral surface of the mounting hole H and the peripheral wall portion 8a of the second reflecting portion 8. In this way, in the embedded lighting fixture 1, the mounting spring 9 is temporarily fixed to the second reflecting portion 8, so that the mounting spring 9 can be mounted without being held in a state where the worker can insert the mounting spring 9 into the mounting hole H by hand. You will be guided to the hole H.

図６（ａ）に示すように、取付バネ９の巻回部９ａは、その中心が取付孔Ｈの上側の周縁部よりも上側に到達すると弾性変形する前の形状に戻り始める。この際、取付バネ９は、巻回部９ａの外周面の作用により、復元力の分力として取付孔Ｈに対して下方向の力を加える。つまり、巻回部９ａは、その反力によって上方向に持ち上げられる（黒塗矢印参照）。これにより、取付バネ９は、被係止部９ｄが第２反射部８の係止部８ｅから離間して仮止めが解除される。さらに、取付バネ９には、仮止めによって弾性変形されていた巻回部９ａと固定部９ｂとの間に生じる復元力によって巻回部９ａを径方向外側に移動させる力が生じる（薄墨矢印参照）。 As shown in FIG. 6A, when the center of the winding portion 9a of the mounting spring 9 reaches the upper side of the upper peripheral portion of the mounting hole H, the winding portion 9a begins to return to the shape before elastic deformation. At this time, the mounting spring 9 applies a downward force to the mounting hole H as a component of the restoring force by the action of the outer peripheral surface of the winding portion 9a. That is, the winding portion 9a is lifted upward by the reaction force (see the black arrow). As a result, the mounting spring 9 is temporarily fixed by separating the locked portion 9d from the locking portion 8e of the second reflecting portion 8. Further, in the mounting spring 9, a force for moving the winding portion 9a radially outward is generated by the restoring force generated between the winding portion 9a and the fixing portion 9b that have been elastically deformed by the temporary fixing (see the light ink arrow). ).

図６（ｂ）に示すように、取付バネ９は、巻回部９ａと固定部９ｂとの間に生じる復元力によって巻回部９ａが取付孔Ｈの周縁上から天井Ｂの上側面に移動する。取付バネ９は、天井Ｂの上側面に巻回部９ａが配置された状態で、巻回部９ａから引き出された端部に灯具２が固定されている。この際、灯具２には、定荷重ぜんまいバネである取付バネ９によって、常に一定の上方向の荷重Ｆ（黒塗矢印参照）が加わっている。 As shown in FIG. 6B, in the mounting spring 9, the winding portion 9a moves from the peripheral edge of the mounting hole H to the upper side surface of the ceiling B due to the restoring force generated between the winding portion 9a and the fixing portion 9b. do. In the mounting spring 9, the lamp 2 is fixed to the end drawn out from the winding portion 9a in a state where the winding portion 9a is arranged on the upper side surface of the ceiling B. At this time, a constant upward load F (see the black arrow) is always applied to the lamp 2 by the mounting spring 9 which is a constant load spring.

埋込型照明器具１は、フランジ部８ｃが天井Ｂの下側面に接触することで、取付バネ９の荷重Ｆと等しい反力（黒塗矢印参照）によって天井Ｂの上側面を下方に押圧し、取付バネ９とフランジ部８ｃとで天井Ｂを挟み込む。この際、フランジ部８ｃは、灯具２と取付孔Ｈとの隙間を覆う。このように埋込型照明器具１は、灯具２と取付孔Ｈとの隙間に取付バネ９の帯状の金属部材が挿通され、取付バネ９によって天井Ｂの上側面にから保持されている。 In the embedded lighting fixture 1, when the flange portion 8c comes into contact with the lower side surface of the ceiling B, the reaction force equal to the load F of the mounting spring 9 (see the black-painted arrow) presses the upper side surface of the ceiling B downward. , The ceiling B is sandwiched between the mounting spring 9 and the flange portion 8c. At this time, the flange portion 8c covers the gap between the lamp 2 and the mounting hole H. In this way, in the embedded lighting fixture 1, a band-shaped metal member of the mounting spring 9 is inserted into the gap between the lamp fixture 2 and the mounting hole H, and is held from the upper side surface of the ceiling B by the mounting spring 9.

図７に示すように、埋込型照明器具１は、下方向の外力によって取付孔Ｈから灯具２が外れた場合、取付バネ９の巻回部９ａから帯状の金属部材が引き出されて天井Ｂから釣り下がった状態になる。取付バネ９は、定荷重ぜんまいバネから構成されているため、灯具２を取付孔Ｈの挿入方向（上方向）に引き上げる一定の荷重Ｆが常に発生している（黒塗矢印参照）。従って、埋込型照明器具１は、下方向の外力よりも取付バネ９の荷重Ｆが大きくなると、取付バネ９によって取付孔Ｈの挿入方向に引き上げられる。 As shown in FIG. 7, in the embedded lighting fixture 1, when the lamp 2 is removed from the mounting hole H by an external force in the downward direction, a band-shaped metal member is pulled out from the winding portion 9a of the mounting spring 9 and the ceiling B is used. It will be in a state of being caught. Since the mounting spring 9 is composed of a constant load spring, a constant load F that pulls up the lamp 2 in the insertion direction (upward direction) of the mounting hole H is always generated (see the black arrow). Therefore, when the load F of the mounting spring 9 becomes larger than the downward external force, the embedded lighting fixture 1 is pulled up by the mounting spring 9 in the insertion direction of the mounting hole H.

以上、説明した本実施形態に係る埋込型照明器具１は、取付バネ９であるぜんまいバネの巻回部９ａから引き出された端部に灯具２が固定され、天井Ｂの厚さに応じて巻回部９ａからの引き出し量が変更されるので、天井Ｂの板厚に関わらず、常に灯具２を引き上げる力が生じている。これにより、埋込型照明器具１は、天井Ｂの板厚に応じた取付バネ９の力の変動を抑制することができる。また、埋込型照明器具１は、灯具２と取付孔Ｈとの隙間に取付バネ９の帯状の部材が挿通され、その先端部に灯具２が固定されている。従って、灯具２と取付孔Ｈとの隙間は、取付バネ９を構成している１枚の帯状の部材が挿通可能な幅であればよい。これにより、埋込型照明器具１は、灯具２と取付孔Ｈとの隙間を覆うために必要なフランジ部８ｃによる灯具２の径寸法の大型化を抑制することができる。 In the embedded lighting fixture 1 according to the present embodiment described above, the lamp 2 is fixed to the end portion pulled out from the winding portion 9a of the mainspring spring which is the mounting spring 9, and the lamp 2 is fixed according to the thickness of the ceiling B. Since the amount of withdrawal from the winding portion 9a is changed, a force for pulling up the lamp 2 is always generated regardless of the plate thickness of the ceiling B. As a result, the embedded lighting fixture 1 can suppress fluctuations in the force of the mounting spring 9 according to the plate thickness of the ceiling B. Further, in the embedded lighting fixture 1, a band-shaped member of the mounting spring 9 is inserted into a gap between the lamp fixture 2 and the mounting hole H, and the lamp fixture 2 is fixed to the tip thereof. Therefore, the gap between the lamp 2 and the mounting hole H may have a width that allows one strip-shaped member constituting the mounting spring 9 to be inserted. As a result, the embedded lighting fixture 1 can suppress an increase in the diameter of the lamp 2 due to the flange portion 8c required to cover the gap between the lamp 2 and the mounting hole H.

また、本実施形態に係る埋込型照明器具１は、灯具２の第２反射部８に設けられる係止部８ｅと、取付バネ９の固定部９ｂ側に設けられる被係止部９ｄと、からなる仮止め機構を有し、被係止部９ｄが係止部８ｅに係止されると、取付孔Ｈの軸方向視で、取付バネ９であるぜんまいバネの中心が取付孔Ｈの内側にされ、ぜんまいバネの外周面が取付孔Ｈの外側に配置されることを特徴としている。これにより、埋込型照明器具１は、灯具２を取付孔Ｈに挿入すると、取付バネ９の巻回部９ａのガイド作用によって取付バネ９が取付孔Ｈに誘い込まれ、巻回部９ａが取付孔Ｈと第２反射部８とに挟まれて弾性変形される。また、巻回部９ａが取付孔Ｈを通過すると、その復元力によって仮止めが解除されつつ、巻回部９ａが天井Ｂに係止されるので、作業者が取付バネ９を手で押さえながら取付孔Ｈに挿入する必要がなく容易に天井Ｂに取り付けることができる。 Further, the embedded lighting fixture 1 according to the present embodiment includes a locking portion 8e provided on the second reflecting portion 8 of the lighting fixture 2, a locked portion 9d provided on the fixing portion 9b side of the mounting spring 9, and a locked portion 9d. When the locked portion 9d is locked to the locking portion 8e, the center of the mainspring spring, which is the mounting spring 9, is inside the mounting hole H in the axial direction of the mounting hole H. The outer peripheral surface of the mainspring is arranged outside the mounting hole H. As a result, in the embedded lighting fixture 1, when the lamp 2 is inserted into the mounting hole H, the mounting spring 9 is attracted to the mounting hole H by the guiding action of the winding portion 9a of the mounting spring 9, and the winding portion 9a is moved. It is sandwiched between the mounting hole H and the second reflecting portion 8 and elastically deformed. Further, when the winding portion 9a passes through the mounting hole H, the temporary fixing is released by the restoring force, and the winding portion 9a is locked to the ceiling B, so that the operator holds the mounting spring 9 by hand. It does not need to be inserted into the mounting hole H and can be easily mounted on the ceiling B.

また、本実施形態に係る埋込型照明器具１は、取付バネ９が定荷重ぜんまいバネから構成されていることを特徴としている。埋込型照明器具１は、取付時に天井Ｂの厚さに応じて巻回部９ａからの引き出し量が変更されても、灯具２を引き上げる力として常に一定の上方向の荷重Ｆ（白塗矢印参照）が加わっている。これにより、埋込型照明器具１は、取付部である天井Ｂの状態や天井Ｂに対する灯具２の位置に関わらず、灯具２の保持力を維持することができる。 Further, the embedded lighting fixture 1 according to the present embodiment is characterized in that the mounting spring 9 is composed of a constant load spring. In the embedded lighting fixture 1, even if the amount of withdrawal from the winding portion 9a is changed according to the thickness of the ceiling B at the time of mounting, a constant upward load F (white-painted arrow) is always used as a force for pulling up the lamp 2. See) has been added. As a result, the embedded lighting fixture 1 can maintain the holding power of the lamp 2 regardless of the state of the ceiling B which is the mounting portion and the position of the lamp 2 with respect to the ceiling B.

また、本実施形態に係る埋込型照明器具１は、取付バネ９の巻回部９ａの内側の端部に抜止め部９ｃが形成されていることを特徴とする。埋込型照明器具１は、外力によって灯具２が取付孔Ｈから外れると、取付バネ９の巻回部９ａから帯状の金属部材が引き出される。埋込型照明器具１は、抜止め部９ｃが天井Ｂに引っかかることで天井Ｂと灯具２との接続が維持され、外力が荷重Ｆよりも小さくなると灯具２が上方向に引き上げられる。これにより、埋込型照明器具１は、外力が加わっても天井Ｂから脱落することなく、元の状態に復帰することができる。 Further, the embedded lighting fixture 1 according to the present embodiment is characterized in that a retaining portion 9c is formed at an inner end portion of the winding portion 9a of the mounting spring 9. In the embedded lighting fixture 1, when the lamp 2 is disengaged from the mounting hole H by an external force, a band-shaped metal member is pulled out from the winding portion 9a of the mounting spring 9. In the embedded lighting fixture 1, the connection between the ceiling B and the lamp 2 is maintained by the retaining portion 9c being caught on the ceiling B, and when the external force becomes smaller than the load F, the lamp 2 is pulled upward. As a result, the embedded lighting fixture 1 can return to the original state without falling off from the ceiling B even when an external force is applied.

上述の実施形態は、代表的な形態を示したに過ぎず、一実施形態の骨子を逸脱しない範囲で種々変形して実施することができる。さらに種々なる形態で実施し得ることは勿論のことであり、本発明の範囲は、特許請求の範囲の記載によって示され、さらに特許請求の範囲に記載の均等の意味、および範囲内のすべての変更を含む。 The above-described embodiment only shows a typical embodiment, and can be variously modified and implemented within a range that does not deviate from the gist of one embodiment. Further, of course, it can be carried out in various forms, and the scope of the present invention is indicated by the description of the scope of claims, and further, the equal meaning described in the scope of claims, and all within the scope. Including changes.

１ 埋込型照明器具
２ 灯具
４ 光源部
６ 第１反射部
８ 第２反射部
８ｄ バネ取付部
９ 取付バネ
Ｂ 天井
Ｈ 取付孔 1 Embedded lighting fixture 2 Lighting fixture 4 Light source part 6 First reflection part 8 Second reflection part 8d Spring mounting part 9 Mounting spring B Ceiling H Mounting hole

Claims (1)

灯具と、前記灯具を取付孔に取り付けるための取付バネを備える照明器具であって、
前記取付バネは、巻回部を有するぜんまいバネから構成され、
前記巻回部の外周面の一部を前記灯具の取付孔への挿入方向に向け、前記巻回部を前記灯具の側方に突出させた状態で、前記取付バネが前記灯具の側部に配置される照明器具。 A luminaire equipped with a lamp and a mounting spring for mounting the lamp in the mounting hole.
The mounting spring is composed of a mainspring having a winding portion.
The mounting spring is attached to the side of the lamp with a part of the outer peripheral surface of the winding portion directed toward the insertion hole of the lamp and the winding portion is projected to the side of the lamp. Lighting fixtures to be placed.
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Cited By (2)

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Publication number Priority date Publication date Assignee Title
US11754237B2 (en) 2021-06-12 2023-09-12 Lucifer Lighting Company Retention, adjustability and maintenance for a recessed component such as a recessed luminaire
US12173864B2 (en) 2021-06-12 2024-12-24 Lucifer Lighting Company Retention, adjustability and maintenance for a recessed component such as a recessed luminaire

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JP3160426U (en) 2010-04-13 2010-06-24 天網電子股▲分▼有限公司 Downlight support device
EP2463578A1 (en) 2010-12-09 2012-06-13 Antares Iluminación S.A. Device for securing fixtures
EP2792935A1 (en) 2013-04-19 2014-10-22 LED Group A lamp assembly

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JPS58106807U (en) * 1982-01-14 1983-07-20 松下電工株式会社 lighting equipment
JPS6178004A (en) * 1984-09-25 1986-04-21 松下電工株式会社 Lighting fixture

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JP3160426U (en) 2010-04-13 2010-06-24 天網電子股▲分▼有限公司 Downlight support device
EP2463578A1 (en) 2010-12-09 2012-06-13 Antares Iluminación S.A. Device for securing fixtures
EP2792935A1 (en) 2013-04-19 2014-10-22 LED Group A lamp assembly

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11754237B2 (en) 2021-06-12 2023-09-12 Lucifer Lighting Company Retention, adjustability and maintenance for a recessed component such as a recessed luminaire
US12173864B2 (en) 2021-06-12 2024-12-24 Lucifer Lighting Company Retention, adjustability and maintenance for a recessed component such as a recessed luminaire
US12504136B2 (en) 2021-06-12 2025-12-23 Lucifer Lighting Company Retention, adjustability and maintenance for a recessed component such as a recessed luminaire

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