JP5055457B1

JP5055457B1 - lighting equipment

Info

Publication number: JP5055457B1
Application number: JP2011259380A
Authority: JP
Inventors: 良樹大津; 武之宅島
Original assignee: 瀧住電機工業株式会社
Priority date: 2011-11-28
Filing date: 2011-11-28
Publication date: 2012-10-24
Anticipated expiration: 2031-11-28
Also published as: JP2013114868A

Abstract

【課題】光源を覆うカバー内へ虫が侵入するのを阻止する。
【解決手段】光源のカバー７０を器具本体２に対し回転させることにより取り付ける。被係止部７５の回転の中心からの距離が係止部２４の回転の中心からの距離と同じであり、ガイド部は、回転の方向について被係止部７５を係止部２４へ案内し、被係止部７５が係止部２４の上に乗り上げた状態に係止される。被係止部７５をガイド部へ合わせカバー７０を回転させることにて、被係止部７５を係止部２４へ係止することができ、上記係止により上記カバー７０を上記器具本体２へ固定する。虫侵入防止部２８は、カバー７０と器具本体２との間に介される弾性変形部材であり、平面視環状の部材である。弾性変形部材は、上記係止によりカバー７０と器具本体２とに挟まれて弾性変形しカバー７０と器具本体２と間を密閉し、弾性変形により被係止部７５を係止部２４へ付勢する。
【選択図】図１PROBLEM TO BE SOLVED: To prevent insects from entering a cover covering a light source.
A light source cover 70 is attached by rotating it with respect to an instrument body 2. The distance from the rotation center of the locked portion 75 is the same as the distance from the rotation center of the locking portion 24, and the guide portion guides the locked portion 75 to the locking portion 24 in the direction of rotation. The locked portion 75 is locked in a state where the locked portion 75 rides on the locking portion 24. The locked portion 75 can be locked to the locking portion 24 by aligning the locked portion 75 with the guide portion and rotating the cover 70, and the cover 70 is attached to the instrument body 2 by the locking. Fix it. The insect intrusion prevention unit 28 is an elastically deformable member interposed between the cover 70 and the instrument main body 2 and is an annular member in plan view. The elastic deformation member is elastically deformed by being sandwiched between the cover 70 and the instrument main body 2 by the above-described locking, and the cover 70 and the instrument main body 2 are hermetically sealed, and the locked portion 75 is attached to the locking portion 24 by elastic deformation. Rush.
[Selection] Figure 1

Description

本願発明は、照明器具に関するものである。 The present invention relates to a lighting fixture.

設置されて周囲を照らす照明器具は、屋内、屋外を問わず、光源を覆うカバー内への虫の侵入に苦慮する。
近年では、省エネや、蛍光灯に比べて寿命の長いことから、光源にＬＥＤを採用するものが普及しつつある。
特に、ＬＥＤの光の特性として、虫が好む４００ｎｍの波長をほとんど含まないので、虫が寄りにくいとの期待があった。
しかし、実際に照明器具にＬＥＤを使用すると、熱を発生するので、このような熱に惹かれて虫が寄ってきてしまう。
このよう背景から、特許文献１には、虫の侵入を防止する手段として、発泡樹脂であるスポンジを備えた照明器具が提案されている。 Lighting fixtures that are installed and illuminate the surroundings, both indoors and outdoors, struggle with insects entering the cover that covers the light source.
In recent years, energy-saving and longer life than fluorescent lamps have led to widespread use of LEDs as light sources.
In particular, as the characteristics of the light of the LED, since the wavelength of 400 nm that insects prefer is hardly included, there was an expectation that insects are difficult to approach.
However, when an LED is actually used in a lighting fixture, heat is generated, and insects are attracted by such heat.
From such a background, Patent Document 1 proposes a lighting apparatus including a sponge, which is a foamed resin, as means for preventing insects from entering.

この特許文献１に示された照明器具は、光源と、この光源と電気的に接続してこれを制御する制御部と、この制御部及び光源を設けたシャーシ本体と、前記シャーシ本体の前記光源側で該光源を覆うために上部のみが開口されたカバーを有した照明器具において、前記シャーシ本体の外周縁部に下方に折り返した折返面を形成し、前記カバーの前記開口周縁に上方へ立ち上がる立設面を形成し、前記カバーの開口周縁部と前記立設面とに接触する部位に、前記シャーシ本体の前記折返面と弾性変形した状態で接触する侵入阻止部材を設けたものである。特許文献１において、上記侵入防止部材として、発砲樹脂であるスポンジが示されている。
上記構成によって、特許文献１において、シャーシ本体への上記折返面の形成により、シャーシ本体の歪みを抑えた旨その効果とする。即ち、特許文献１は、シャーシ本体の熱膨張や変形による隙間の発生を抑えて、当該隙間から虫が侵入するのを防止しようとするものである。特に、上記折返面と立設面との隙間に弾性変形部材即ち上記スポンジを、侵入防止部材として設けることで、上記では対処できない隙間の発生に対応しようとするものである。 The lighting fixture disclosed in Patent Document 1 includes a light source, a control unit that is electrically connected to the light source and controls the light source, a chassis main body provided with the control unit and the light source, and the light source of the chassis main body. In a luminaire having a cover that is open only at the top to cover the light source on the side, a folding surface that is folded downward is formed at the outer peripheral edge of the chassis body, and rises upward at the opening peripheral edge of the cover An intrusion prevention member that is in a state of elastically deforming with the folded surface of the chassis main body is provided at a portion that forms a standing surface and contacts the peripheral edge of the opening of the cover and the standing surface. In Patent Document 1, a sponge, which is a foaming resin, is shown as the intrusion prevention member.
According to the above configuration, in Patent Document 1, the effect of suppressing distortion of the chassis main body by forming the folded surface on the chassis main body is described. That is, Patent Document 1 attempts to prevent the insects from entering through the gaps by suppressing the occurrence of gaps due to thermal expansion and deformation of the chassis body. In particular, the elastic deformation member, that is, the sponge is provided as an intrusion prevention member in the gap between the folded surface and the standing surface, thereby trying to cope with the generation of the gap that cannot be dealt with above.

特開２００７−１０９４３６号公報JP 2007-109436 A

しかし、この公報のものでは、カバーをシャーシ本体へ固定する具体的な手段が示されていない。
例えば、カバーのシャーシ本体への固定に際して、特許文献１の図３のシャーシ本体下方から上方へカバーを移動させて行くものとすると、折返面３ａの下端がカバー４へ突き当たるまで、スポンジ３ａは、当該折返面３ａの内側面に擦られることになる。このため、フィルムを、スポンジ３ａに設けるといった、スポンジ３ａの滑りを良くする工夫を必要とする。
また、上記摩擦によってスポンジが捲れて剥がれないように、上記延設面４ｂを形成して、スポンジを押さえる必要がある。
更に、スポンジは、変形によって隙間が生じた場合に対応するためのものであり、本来、折返面の形成にて上記隙間を排除することを主眼とするものである。このため、特許文献１では、シャーシ本体とカバーとの接触を確実にすることが前提とされる。
密閉構造において、このような素材の異なる部材が接触することにより、防虫を可能とすることはできても、光源の熱を受けて、カバーとシャーシ本体の素材間の、熱の膨張率・収縮率の違いで、収縮音「音鳴り」が発生する。
更に、一般的な照明器具では、光源の交換などのために、カバーを簡単に外すことができる固定構造を採用している。このため、利用者において、加熱したＬＥＤやＬＥＤの基板に触れて火傷を負うという危惧がある。
本願発明は、照明器具において、カバー内への虫の侵入を防ぐことを目的とする。
また、本願発明は、照明器具使用時の光源の発する熱によって、カバーや器具本体の収縮・膨張にて、上記音鳴りの発生を防止することを目的とする。
更に、本願発明は、利用者において簡単にカバーを外すことができない照明器具の提供を目的とする。
本願発明は、特に、複雑な構成を必要とせずに弾性変形部材を確実に器具本体へ固定すると共に上記虫侵入の防止をより確実に行うことをその目的とする。 However, in this publication, no specific means for fixing the cover to the chassis body is shown.
For example, when the cover is fixed to the chassis main body, if the cover is moved upward from the bottom of the chassis main body in FIG. 3 of Patent Document 1, the sponge 3a is used until the lower end of the folded surface 3a hits the cover 4. It will be rubbed against the inner surface of the folded surface 3a. For this reason, the device which improves the slip of sponge 3a, such as providing a film in sponge 3a, is required.
Further, it is necessary to form the extended surface 4b and hold the sponge so that the sponge does not rub off and peel off due to the friction.
Furthermore, the sponge is for dealing with a case where a gap is generated due to deformation, and is primarily intended to eliminate the gap by forming a folded surface. For this reason, in Patent Document 1, it is assumed that the contact between the chassis main body and the cover is ensured.
In a sealed structure, even though it is possible to prevent insects by contacting different members of such materials, the heat expansion coefficient and contraction between the cover and the chassis body material are received by the heat of the light source. Due to the difference in rate, a contraction sound "sounding" occurs.
Further, a general lighting fixture employs a fixing structure that allows the cover to be easily removed for replacement of the light source. For this reason, there is a concern that the user may get burned by touching the heated LED or LED substrate.
An object of the present invention is to prevent insects from entering a cover in a lighting fixture.
Another object of the present invention is to prevent the generation of the above-mentioned noise due to the contraction / expansion of the cover or the instrument body due to the heat generated by the light source when the lighting instrument is used.
Furthermore, this invention aims at provision of the lighting fixture which cannot remove a cover easily in a user.
It is an object of the present invention to particularly securely fix the elastic deformation member to the instrument body without requiring a complicated configuration and to more reliably prevent the insect invasion.

本願の請求項１の発明は、天井から吊下げられて室内を照らす吊り下げ型の照明器具について、次の構成を採るものを提供する。
即ち、この照明器具は、光源である複数のＬＥＤと、当該ＬＥＤが取り付けられる器具本体と、当該器具本体へ取り付けられてＬＥＤを覆うカバーと、器具本体へカバーを固定する固定機構と、カバー内へ虫が侵入するのを防止する虫侵入防止部とを備え、上記カバーの上端は、上端開口部にて開口し、上記器具の下方から上記器具本体へ取り付けられて、上記光源を覆うものであり、上記固定機構は、係止部と、被係止部と、収容部と、固定具とによって構成され、上記カバーを上記器具本体に対し回転させることにより、上記カバーを上記器具本体へ取り付けるものであり、上記器具本体は、中心軸を上下とする筒状体であり、下端に底部を備え、上記複数のＬＥＤよりも上方において、上記器具本体の外周には、上記器具本体と同心のスリーブと筒状部とが、器具本体と一体に設けられており、上記スリーブは、平面視において器具本体を中心として器具本体の径外方向であり且つ下方へ向けて突出するものであり、上記筒状部は、上記スリーブの径の内側に設けられ、上記収容部は、上記スリーブと上記筒状部との間に設けられた空間であり、上記スリーブの外縁と上記筒状部の下縁との間が当該収容部の開口部をなし、上記係止部は、上記筒状部の外縁に複数設けられ、上記筒状部の下縁から上記筒状部の径の外側に向けて突出するものであり、複数の上記係止部同士は、上記スリーブの周方向について間隔を開けて設けられ、上記スリーブの周方向について、収容部の上記開口部における当該間隔を開けられた区間が、ガイド部を構成し、上記係止部における筒状部の周方向の一端には、筒状部の外周に沿って当該一端から離れるにつれ下方へ斜めに伸びる傾斜部が延設され、上記カバーは、光拡散部と、中央部と、内襟部とを備え、上記光拡散部は、器具本体に設けられた上記ＬＥＤの収容空間を覆い、且つ、ＬＥＤの光を拡散してカバーの外部へ透過する平面視環状のケースであり、上記光拡散部の径は、上記スリーブの径よりも大きく、
上記中央部は，環状の上記光拡散部が呈する環の内側に設けられ、且つ、上記光拡散部と一体に形成されて光拡散部の呈する環の内側を塞ぎ、上記内襟部は、上記光拡散部の外縁から、上記光拡散部の径内側に向けて、上記光拡散部と一体に形成された平面視環状の板状部であり、上記被係止部は、上記内襟部の内径部に複数設けられ、上記内襟部の径の内側に向けて突出するものであり、複数の被係止部同士は、上記内襟部の周方向について間隔を開けて配置され、上記被係止部の夫々は、上方に隆起する起立部を備え、上記カバーを上記器具本体の下面へ上記器具本体と同心に配置した状態において、平面視における被係止部の器具本体の中心からの距離は、平面視における係止部の器具本体の中心からの距離と等しいものであり、上記カバーを上記器具本体の下面へ上記器具本体と同心に配置し、上記ガイド部から上記収容部へ被係止部を収容した状態にして、上記カバーを器具本体に対し回転させることにより、上記ガイド部にガイドされた被係止部は、上記傾斜部を経て係止部の上面へ移動し、上記スリーブ内において、上記傾斜部側を入口側とし係止部を挟んで上記傾斜部と反対側は、行き止まりとなっており、被係止部の上記移動により、上記起立部の上端が、収容部内にて、上記スリーブの下面と当接して、上記スリーブの外縁がカバーの上記内襟部上面へ接触するのを阻止し、上記固定具は、ねじ山を備えた部材であり、上記固定具は、上記移動にて被係止部の係止部へ係止が完了した後、上記スリーブの外部からねじ込まれて、被係止部が係止部から上記入口側へ後退するのを阻止するものであり、上記固定具は、工具によって取り外しできるものであり、上記虫侵入防止部は、上記スリーブの外縁に沿って当該外縁又は上記起立部よりも当該外縁側に設けられた、平面視環状のスポンジであり、上記虫侵入防止部の下端は、スリーブの上記外縁よりも下方に突出するものであり、上記カバーの器具本体への取り付けによって、虫侵入防止部は、上記スリーブの外縁と、カバーの上記内襟部上面とに挟まれて弾性変形し、上記スリーブの外縁と、カバーの上記内襟部上面との間の隙間を密閉するものであり、弾性変形した上記虫侵入防止部の付勢によって、上記被係止部は上記係止部上面へ押圧される。
本願の請求項２の発明は、屋内又は屋外に設置されて周囲を照らす照明器具について、次の構成を採るものを提供する。
即ち、この照明器具は、光源と、当該光源が取り付けられる器具本体と、当該器具本体へ取り付けられて光源を覆うカバーと、当該カバーを上記器具本体へ取り付ける固定機構と、当該器具本体と当該カバーとの間からカバー内へ虫が侵入するのを防止する虫侵入防止部とを備え、上記カバーは、上記器具本体を臨む側に開口する一端開口部を備え、上記カバーは、当該一端開口部側を上記器具本体へ向けて上記器具本体へ取り付けられて、上記光源を覆うものであり、上記カバーは、上方に上記一端開口部を備え、上記器具本体の下方から器具本体へ取り付けられるものであり、上記固定機構は、回転の中心軸の軸方向を上下方向として、上記カバーを上記器具本体に対し回転させることにより、上記カバーを上記器具本体へ取り付けることを可能とするものであり、上記固定機構は、上記器具本体と上記カバーの一方に設けられた係止部と、上記器具本体と上記カバーのうち係止部が設けられた当該一方に形成されたガイド部と、
器具本体とカバーの他の一方に設けられて係止部に係止される被係止部とを備え、上記被係止部は、上記回転の中心からの距離が、上記係止部の上記回転の中心からの距離と同じであり、上記ガイド部は、上記回転の方向について、少なくとも係止部と離れた位置から係止部に至るまで設けられて、被係止部を係止部へ案内するものであり、上記係止部における上記回転の方向の一端には、上記回転の方向に沿って当該一端から離れるにつれ下方へ斜めに伸びる傾斜部が延設され、上記カバーを器具本体に対し回転させることにより、上記ガイド部にガイドされた被係止部は、上記傾斜部を経て係止部の上面へ移動し、上記被係止部が上記係止部の上に乗り上げることにより、上記被係止部が係止部へ係止され、且つ、上記器具本体へ上記カバーが接近するものであり、上記被係止部をガイド部へ合わせることにより、上記カバーの回転にて、上記被係止部を上記係止部へ係止することができ、被係止部の係止部への当該係止により、上記カバーを上記器具本体へ取り付けることができ、上記虫侵入防止部は、上記一端開口部の縁或いは当該縁の外側において上記カバーと上記器具本体との間に介される弾性変形部材であり、上記回転方向について連続して配置された平面視環状の部材であり、上記弾性変形部材は、係止部への被係止部の上記係止により、上記カバーと上記器具本体とに挟まれて弾性変形し、上記カバーと上記器具本体と間を密閉するものであり、弾性変形した弾性変形部材にて、被係止部は係止部へ付勢される。
本願の請求項３の発明は、本願の上記請求項２の発明にあって、次の構成を採る照明器具を提供する。
即ち、上記係止部が設けられた、上記器具本体と上記カバーの一方に、上記被係止部の収容部が設けられ、上記収容部は、上記回転の中心を中心として弧状に伸びる或いは上記回転の中心を中心とする環状の開口部を備え、上記係止部は、上記開口部の径の内外方向及び周方向について、上記開口部内に配置され、上記開口部は、上記周方向について、上記係止部に隣接して当該係止部が形成されない区間を上記ガイド部として備え、上記被係止部は、上記収容部の奥行き方向に隆起する起立部を備え、上記カバーの上記器具本体への取り付けにおいて、上記起立部が収容部内にて収容部を画する面と当接して、上記カバーの上端開口部において、係止部以外の部位が上記器具本体へ直接接触するのを防ぎ、上記カバーは、上記上端開口部において、上記被係止部のみにて、器具本体と直接接触するものである。
本願の請求項４の発明では、本願の上記請求項２又は３の発明にあって、上記器具本体は、上記光源が取り付けられた部位よりも上方にあって、上記器具本体の側面から突出するスリーブを備え、上記スリーブは、側面視において、上記器具本体の径外方向に進むにつれて下方へ傾斜して突出するものであり、上記器具本体側面と上記スリーブとの間の空間が、上記収容部を構成し、上記係止部は、上記光源と上記スリーブの間にて上記器具本体側面から器具本体の径外方向へ突出するものであり、上記固定機構は、固定具を備え、上記固定具は、ねじ山を備えた部材であり、上記収容部内において、上記被係止部が係止部へ乗り上げた先は行き止まりとなっており、上記固定具は、上記移動にて被係止部の係止部へ係止が完了した後、上記スリーブの外部からねじ込まれて、被係止部が係止部の上から後退するのを阻止するものであり、上記固定具は、工具によって取り外しできるものである照明器具を提供する。
本願の請求項５の発明は、上願の上記請求項２乃至４の何れかの発明にあって、次の構成を採る照明器具を提供する。
即ち、上記カバーは、上方に上記一端開口部を備え、上記器具本体の下方から器具本体へ取り付けられるものであり、カバーの上記回転は、平面視において上記器具本体の中心を中心として行われ、上記器具本体は、ＬＥＤが取り付けられた部位よりも上方にあって、上記器具本体の側面から突出するスリーブを備え、上記スリーブは、側面視において、上記器具本体の径外方向に進むにつれて下方へ傾斜して突出するものであり、上記器具本体側面と上記スリーブとの間の空間が、上記収容部を構成し、上記係止部は、上記光源と上記スリーブの間にて上記器具本体側面から器具本体の径外方向へ突出するものであり、平面視において、複数の上記係止部同士は、間隔を開けて設けられ、上記収容部における上記係止部間の区間が、上記カイド部を構成し、カバー上端は、カバーの径の内側方向へ突出する環状の内襟部を備え、当該内襟部の内径部が上記一端開口部を規定し、上記被係止部は、上記内襟部の内径部から、カバーの径内側へ向け突出するものであり、平面視において、複数の上記被係止部同士は、間隔を開けて設けられ、上記虫侵入防止部は、側面視において、上記スリーブの外縁と上記内襟部上面との間に介され、被係止部の係止部への上記係止により接近する上記スリーブの外縁と上記内襟部の上面に挟まれて弾性変形し、上記スリーブの外縁と上記内襟部の上面との間を密閉するものであり、上記虫侵入防止部は、スポンジ等の弾力性を有する部材である。 The invention of claim 1 of the present application provides a hanging type lighting fixture that hangs from a ceiling and illuminates a room and has the following configuration.
That is, the lighting fixture includes a plurality of LEDs that are light sources, a fixture body to which the LEDs are attached, a cover that is attached to the fixture body and covers the LEDs, a fixing mechanism that fixes the cover to the fixture body, An insect intrusion prevention unit for preventing insects from invading, and the upper end of the cover opens at the upper end opening, and is attached to the instrument body from below the instrument to cover the light source. And the fixing mechanism includes a locking portion, a locked portion, a receiving portion, and a fixture, and the cover is attached to the instrument body by rotating the cover relative to the instrument body. The instrument body is a cylindrical body having a central axis up and down, has a bottom portion at the lower end, and above the plurality of LEDs, on the outer periphery of the instrument body, is concentric with the instrument body. The rib and the cylindrical portion are provided integrally with the instrument main body, and the sleeve is a radial outward direction of the instrument main body around the instrument main body in a plan view and projects downward. The cylindrical portion is provided inside the diameter of the sleeve, and the storage portion is a space provided between the sleeve and the cylindrical portion, and the outer edge of the sleeve and the lower edge of the cylindrical portion Is formed in the outer edge of the cylindrical portion, and protrudes from the lower edge of the cylindrical portion toward the outside of the diameter of the cylindrical portion. The plurality of the locking portions are provided with an interval in the circumferential direction of the sleeve, and the interval of the interval in the opening of the accommodating portion is provided in the circumferential direction of the sleeve. The guide part is configured, and the cylindrical part of the locking part is One end in the direction is provided with an inclined portion extending obliquely downward as it is away from the one end along the outer periphery of the cylindrical portion, and the cover includes a light diffusing portion, a central portion, and an inner collar portion. The light diffusing portion is an annular case that covers the housing space of the LED provided in the fixture body and diffuses the light of the LED and transmits it to the outside of the cover, and has a diameter of the light diffusing portion. Is larger than the diameter of the sleeve,
The central portion is provided inside the ring exhibited by the annular light diffusing portion, and is formed integrally with the light diffusing portion to block the inside of the ring exhibited by the light diffusing portion, and the inner collar portion is From the outer edge of the light diffusing part toward the inside of the diameter of the light diffusing part, a planar plate-like part formed integrally with the light diffusing part, and the locked part is formed of the inner collar part. A plurality of inner diameter portions are provided to protrude toward the inner diameter of the inner collar portion, and the plurality of locked portions are arranged at intervals in the circumferential direction of the inner collar portion. Each of the locking portions includes an upright portion that protrudes upward, and in a state where the cover is disposed concentrically with the tool body on the lower surface of the tool body, the locked portion from the center of the tool body in a plan view. The distance is equal to the distance from the center of the instrument body of the locking portion in plan view, The bar is arranged concentrically with the instrument body on the lower surface of the instrument body, the locked part is accommodated from the guide part to the accommodation part, and the cover is rotated with respect to the instrument body, thereby the guide The locked portion guided by the portion moves to the upper surface of the locking portion through the inclined portion, and in the sleeve, the inclined portion side is the inlet side and the locking portion is sandwiched between the inclined portion and the opposite side of the inclined portion. Is a dead end, and due to the movement of the locked portion, the upper end of the upright portion abuts the lower surface of the sleeve in the accommodating portion, and the outer edge of the sleeve is the upper surface of the inner collar portion of the cover. The fixing tool is a member provided with a screw thread, and the fixing tool is engaged with the locking portion of the locked portion by the movement, and then the Screwed from the outside, the locked part is inserted from the locking part to the inlet The fixing tool can be removed by a tool, and the insect intrusion prevention part is located on the outer edge side of the outer edge or the standing part along the outer edge of the sleeve. Provided is a sponge in a ring shape in plan view, and the lower end of the insect intrusion prevention part protrudes downward from the outer edge of the sleeve, and by attaching the cover to the instrument body, the insect intrusion prevention part is The sleeve is elastically deformed by being sandwiched between the outer edge of the sleeve and the upper surface of the inner collar portion of the cover, and seals the gap between the outer edge of the sleeve and the upper surface of the inner collar portion of the cover. Due to the urging of the insect intrusion prevention portion, the locked portion is pressed to the upper surface of the locking portion.
Invention of Claim 2 of this application provides what takes the following structure about the lighting fixture installed indoors or outdoors and illuminating the circumference | surroundings.
That is, the lighting fixture includes a light source, a fixture main body to which the light source is attached, a cover that is attached to the fixture main body and covers the light source, a fixing mechanism that attaches the cover to the fixture main body, the fixture main body, and the cover And an insect intrusion prevention unit for preventing insects from entering the cover from between, the cover includes an end opening that opens to the side facing the instrument body, and the cover includes the one end opening. It is attached to the instrument body with the side facing the instrument body and covers the light source, and the cover includes the one end opening on the upper side and is attached to the instrument body from below the instrument body. There, the fixing mechanism attaches the axial direction of the center axis of rotation as a vertical direction, the cover by rotating relative to the instrument body, the cover to the instrument body this The fixing mechanism is formed on a locking portion provided on one of the instrument body and the cover, and on one of the instrument body and the cover provided with a locking portion. A guide section,
A locking part provided on the other side of the instrument main body and the cover and locked to the locking part, wherein the locked part has a distance from the center of rotation of the locking part. It is the same as the distance from the center of rotation, and the guide portion is provided from the position away from the locking portion to the locking portion in the direction of rotation, and the locked portion to the locking portion. An inclined portion that extends obliquely downward as it is away from the one end along the direction of rotation extends at one end of the locking portion in the direction of rotation, and the cover is attached to the instrument body. By rotating, the locked portion guided by the guide portion moves to the upper surface of the locking portion through the inclined portion, and the locked portion rides on the locking portion, The locked portion is locked to the locking portion, and the lock is applied to the instrument body. -Is approaching, and by aligning the locked portion with the guide portion, the locked portion can be locked to the locking portion by rotation of the cover. The cover can be attached to the instrument body by the latching to the latching part, and the insect intrusion prevention part is formed between the cover and the instrument body at the edge of the one end opening or outside the edge. It is an elastic deformation member interposed between them, and is a ring member in plan view arranged continuously in the rotation direction, and the elastic deformation member is formed by the locking of the locked portion to the locking portion. sandwiched between the cover and the instrument body elastically deformed, is intended to seal between the said cover and the instrument body, urging an elastic deformation member that is elastically deformed, the locked portion is to the locking portion Is done.
The invention of claim 3 of the present application is the invention of claim 2 of the present application, and provides a lighting apparatus having the following configuration.
In other words, one of the instrument main body and the cover provided with the locking portion is provided with a receiving portion for the locked portion, and the receiving portion extends in an arc shape around the center of the rotation, or An annular opening having a center of rotation is provided, and the locking portion is disposed in the opening with respect to the inner and outer directions and the circumferential direction of the diameter of the opening, and the opening is in the circumferential direction. A section where the locking portion is not formed adjacent to the locking portion is provided as the guide portion, and the locked portion is provided with an upright portion protruding in the depth direction of the housing portion, and the instrument body of the cover In the attachment to, the upright portion abuts the surface defining the accommodation portion in the accommodation portion, and prevents the portion other than the locking portion from directly contacting the instrument body in the upper end opening of the cover, The cover is located at the upper end opening. There are at only the engaged portion is configured to direct contact with the instrument body.
In the invention of claim 4 of the present application, in the invention of claim 2 or 3 of the present application, the instrument main body is located above a portion to which the light source is attached and protrudes from a side surface of the instrument main body. The sleeve includes a sleeve, and in a side view, the sleeve is inclined and protrudes downward as it progresses in a radially outward direction of the instrument body, and a space between the instrument body side surface and the sleeve is formed in the housing portion. The locking portion protrudes from the side surface of the instrument body between the light source and the sleeve in the radially outward direction of the instrument body, and the fixing mechanism includes a fixture, and the fixture Is a member provided with a screw thread, and in the housing part, the point where the locked part rides on the locking part is a dead end. After locking to the locking part is completed, Is screwed from the outside of the sleeve, which engaged portion to prevent the back from above the locking portion, it said fixture provides a luminaire in which can be removed by the tool.
The invention of claim 5 of the present application is the invention of any one of claims 2 to 4 of the above application, and provides a lighting apparatus having the following configuration.
That is, the cover is provided with the one end opening on the upper side and is attached to the instrument body from below the instrument body, and the rotation of the cover is performed around the center of the instrument body in plan view. The instrument body includes a sleeve that is located above a portion where the LED is attached and protrudes from a side surface of the instrument body, and the sleeve moves downward as it progresses in the radially outward direction of the instrument body in a side view. The space between the instrument main body side surface and the sleeve constitutes the accommodating portion, and the locking portion extends from the instrument main body side surface between the light source and the sleeve. The device body protrudes outward in the radial direction, and in a plan view, the plurality of locking portions are provided with an interval, and a section between the locking portions in the housing portion is defined by the cap. The upper end of the cover includes an annular inner collar projecting inwardly of the diameter of the cover, the inner diameter of the inner collar defines the one end opening, and the locked portion is The inner collar portion protrudes from the inner diameter portion of the cover toward the inner diameter of the cover, and in plan view, the plurality of locked portions are provided at intervals, and the insect intrusion prevention portion is a side surface. In view, it is sandwiched between the outer edge of the sleeve and the upper surface of the inner collar portion, which is interposed between the outer edge of the sleeve and the upper surface of the inner collar portion, and approaches the locking portion of the locked portion. It is elastically deformed to seal between the outer edge of the sleeve and the upper surface of the inner collar portion, and the insect intrusion prevention portion is a member having elasticity such as a sponge.

本願の各発明は、平面視において環状に設けられた虫侵入防止部にて、器具本体とカバーとの間を確実に密閉し、虫の侵入を抑制した。そして、製造時、カバーを回転させることにより、簡単にカバーを器具本体へ取り付けることができる。このようなカバーの回転によっても、虫侵入防止部は、回転方向に沿って連続するものであるので、カバー或いは器具本体に擦られても簡単に剥離するものではない。特に、係止部に被係止部への乗り上げによる器具本体とカバーの接近にて、器具本体とカバーとから圧縮力を受けるまで、虫侵入防止部には大きな力が掛からず、より捲れ難いものとなっている。このため、カバーや器具本体の製造上、剥がれ防止や滑りをよくするための特段の工夫が不要である。
また、本願の請求項３の発明では、カバーの開口部において、器具本体との直接の接触は、専ら被係止部にて行うものとし、音鳴りの発生を抑制した。特に、本願の請求項１の発明では、カバーと器具本体との間に弾性変形部材としてスポンジを介在させることにより、制振作用により、音鳴りの発生を効果的に抑制することができる。
本願の請求項４の発明では、固定具をねじ込むことにより、工具によって分解しなければ、カバーを外せないものとし、家庭での利用者などにおいて簡単にカバーを外すことを防ぎ、照明器具の安全性を高めた。 Each invention of the present application reliably seals the space between the instrument main body and the cover by the insect intrusion prevention portion provided in an annular shape in plan view, and suppresses the invasion of insects. And a cover can be easily attached to an instrument main body by rotating a cover at the time of manufacture. Even by such rotation of the cover, the insect intrusion prevention unit is continuous along the rotation direction, and therefore does not easily peel off even when rubbed against the cover or the instrument body. In particular, the insect intrusion prevention part does not receive a large force and is more difficult to drown until it receives a compressive force from the instrument body and the cover due to the approach of the instrument body and the cover by climbing onto the latched part. It has become a thing. For this reason, in the manufacture of the cover and the instrument main body, special measures for preventing peeling and improving slipping are unnecessary.
Further, in the invention of claim 3 of the present application, in the opening portion of the cover, the direct contact with the instrument main body is performed exclusively at the locked portion, and the generation of noise is suppressed. In particular, in the invention of claim 1 of the present application, it is possible to effectively suppress the generation of noise due to the vibration control action by interposing a sponge as an elastic deformation member between the cover and the instrument body.
In the invention of claim 4 of the present application, it is assumed that the cover cannot be removed unless it is disassembled by a tool by screwing the fixture, preventing the user from easily removing the cover, etc. Increased sex.

（Ａ）は本願発明の一実施の形態に係る照明器具の縦断面図、（Ｂ）はその照明器具の一部切欠拡縦大断面図。(A) is a longitudinal cross-sectional view of the lighting fixture which concerns on one embodiment of this invention, (B) is a partially notched expansion longitudinal cross-sectional view of the lighting fixture. （Ａ）は上記照明器具のカバーを外し主として底部側を見せる斜視図、（Ｂ）は上記照明器具の放熱部材を外し主として上面部側を見せる一部切欠斜視図、（Ｃ）は図１（Ｂ）の照明器具のＸ−Ｘ断面図。(A) is a perspective view in which the cover of the lighting fixture is removed and mainly shows the bottom side, (B) is a partially cutaway perspective view in which the heat dissipation member of the lighting fixture is removed and the top side is mainly shown, and (C) is FIG. XX sectional drawing of the lighting fixture of B). （Ａ）は上記照明器具の一部切欠拡要部縦大断面図、（Ｂ）は他の実施の形態を示す一部切欠拡要部縦大断面図。(A) is a partially cutout enlarged vertical section of the luminaire, and (B) is a partially cutout enlarged vertical section of another embodiment. （Ａ）は上記照明器具のカバー７０係止前の一部切欠略底面図、（Ｂ）は上記照明器具の器具本体の一部切欠拡要部略斜視図、（Ｃ）は上記照明器具の器具本体にカバーを装着した状態を示す一部切欠略底面図。(A) is a partially cut away schematic bottom view of the lighting fixture before the cover 70 is locked, (B) is a partially cutaway enlarged schematic perspective view of the lighting fixture main body, and (C) is a drawing of the lighting fixture. The partial notch schematic bottom view which shows the state which attached the cover to the instrument main body. 配光を説明する上記照明器具の縦断面図。The longitudinal cross-sectional view of the said lighting fixture explaining light distribution. （Ａ）は上記照明器具の平面図、（Ｂ）は上記照明器具のＬＥＤモジュール１の平面図。(A) is a top view of the said lighting fixture, (B) is a top view of the LED module 1 of the said lighting fixture.

以下、図面に基づき本願発明の実施の形態を説明する。
説明の便宜上、各図において、Ｕは上方、Ｓは下方を示す。
図１（Ａ）へ示す通り、この照明器具は、ペンダント型の即ち天井から吊り下げる吊下げ型の屋内照明器具である。尚、図１（Ａ）（Ｂ）において、図面の煩雑を避けるため、ハッチングは省略している。
この照明器具は、複数のＬＥＤモジュール１と、複数の当該ＬＥＤモジュール１が取り付けられる器具本体２と、放熱部材３と、留め具５と、光拡散部７と、コード８と、虫侵入防止部とを備える。
各部の構成について順に説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
For convenience of explanation, in each figure, U indicates the upper side and S indicates the lower side.
As shown in FIG. 1A, this lighting fixture is a pendant type indoor lighting fixture that is suspended from the ceiling. In FIGS. 1A and 1B, hatching is omitted in order to avoid complexity of the drawing.
This lighting fixture includes a plurality of LED modules 1, a fixture body 2 to which the plurality of LED modules 1 are attached, a heat radiating member 3, a fastener 5, a light diffusion portion 7, a cord 8, and an insect intrusion prevention portion. With.
The configuration of each unit will be described in order.

（ＬＥＤ１）
上記ＬＥＤモジュール１の夫々は、光源である１つ又は複数のＬＥＤ１０と、基板１１とを備えたモジュールである。当該ＬＥＤ１０は基板１１の表面に設けられている。図２（Ａ）及び図６（Ｂ）へ示す通り、個々のＬＥＤモジュール１の基板１１は、平面視略台形である。図６（Ｂ）へ示す通り、このＬＥＤモジュール１は等脚台形状であるが、正確には、本来台形として平行な一対の辺の一方となるべき短辺１６が、平面視凹の曲線である。但し、当該短辺１６は、通常の台形と同じく、直線としても実施できる。
複数のＬＥＤモジュール１は、上記放熱部材３にて器具本体２へ取り付けられる。
複数のＬＥＤモジュール１は、平面視環状に配列される。図２（Ａ）及び図６（Ｂ）へ示す通り、各基板１１には、複数の上記ＬＥＤ１０の他、モジュール間コネクタ１３や、電源コネクタ１４が設けられる。モジュール間コネクタ１３は、基板１１同士間に介される配線１２へ接続するものである。電源コネクタ１４は、電源からの配線（図示しない。）に接続するものである。図６（Ｂ）の１５は、ネジやボルトなどの固定具を通す穴を示している。 (LED1)
Each of the LED modules 1 is a module including one or a plurality of LEDs 10 that are light sources and a substrate 11. The LED 10 is provided on the surface of the substrate 11. As shown in FIGS. 2A and 6B, the substrate 11 of each LED module 1 has a substantially trapezoidal shape in plan view. As shown in FIG. 6B, the LED module 1 has an isosceles trapezoidal shape. To be exact, the short side 16 that should be one of a pair of sides that are essentially parallel as a trapezoid is a curved line that is concave in plan view. is there. However, the short side 16 can also be implemented as a straight line, like a normal trapezoid.
The plurality of LED modules 1 are attached to the instrument body 2 by the heat radiating member 3.
The plurality of LED modules 1 are arranged in an annular shape in plan view. As shown in FIGS. 2A and 6B, each substrate 11 is provided with an inter-module connector 13 and a power connector 14 in addition to the plurality of LEDs 10. The inter-module connector 13 is connected to the wiring 12 interposed between the substrates 11. The power connector 14 is connected to wiring (not shown) from the power source. Reference numeral 15 in FIG. 6B denotes a hole through which a fixture such as a screw or bolt is passed.

（器具本体２）
上記器具本体２は、図１及び図２へ示す通り、中心軸を上下とするプラスチック製の筒状体である。この実施の形態において、器具本体２は、ポリプロピレンにて形成されている。但し、器具本体２は、ポリプロピレンに限定するものではなく、軽量で照明器具として実用的な強度を備えるものであれば、ポリプロピレン以外の素材にて形成することが可能である。
図１（Ａ）へ示す通り、器具本体２である当該筒状体の高さは、その直径よりも小さい。上記器具本体２は、下端に底部を備え、上端が開口する。この上端開口部の外縁にはフランジ部２０が形成されている。フランジ部２０の上面に、シャーシ６が取り付けられて、器具本体２の上端開口部は、当該シャーシ６にて塞がれる。
フランジ部２０には、図１（Ｂ）及び図３（Ａ）へ示す通り、フランジ部２０の上面から下面に貫通する複数の窓部２１が設けられている。複数の窓部２１は、平面視において、上記上端開口部を取り囲むようフランジ部２０へ設けられている。
図１（Ｂ）及び図３（Ａ）へ示す通り、フランジ部２０の外縁２０ａには、側面視において、フランジ部２０の径外方向且つ下方に向け斜めに伸びるスリーブ２２が延設されている。フランジ部２０の下面には、側面視において、上記窓部２１とスリーブ２２との間から、下方へ伸びる筒状部２３が設けられている。この筒状部２３は、下端が解放されている。スリーブ２２と筒状部２３は、何れも、器具本体２が呈する上記筒状体と同心である。 (Equipment body 2)
As shown in FIGS. 1 and 2, the instrument body 2 is a plastic cylindrical body having a central axis up and down. In this embodiment, the instrument body 2 is formed of polypropylene. However, the fixture body 2 is not limited to polypropylene, and can be formed of a material other than polypropylene as long as it is lightweight and has practical strength as a lighting fixture.
As shown to FIG. 1 (A), the height of the said cylindrical body which is the instrument main body 2 is smaller than the diameter. The instrument body 2 has a bottom at the lower end and an upper end that opens. A flange portion 20 is formed on the outer edge of the upper end opening. The chassis 6 is attached to the upper surface of the flange portion 20, and the upper end opening of the instrument body 2 is closed by the chassis 6.
As shown in FIGS. 1B and 3A, the flange portion 20 is provided with a plurality of window portions 21 penetrating from the upper surface to the lower surface of the flange portion 20. The plurality of window portions 21 are provided on the flange portion 20 so as to surround the upper end opening in a plan view.
As shown in FIGS. 1 (B) and 3 (A), a sleeve 22 that extends obliquely outward and radially outward of the flange portion 20 is extended from the outer edge 20a of the flange portion 20 in a side view. . A cylindrical portion 23 is provided on the lower surface of the flange portion 20 so as to extend downward from between the window portion 21 and the sleeve 22 in a side view. The cylindrical portion 23 is open at the lower end. The sleeve 22 and the cylindrical portion 23 are both concentric with the cylindrical body presented by the instrument body 2.

図３（Ａ）へ示す通り、スリーブ２２の内周面と筒状部２３の外周面との間は、器具本体２の径の内外方向について、間隔が開けられており、両者の間の空間が、後述する被係止部２４の収容部ｋを構成する。即ち、側面視において、スリーブ２２は、上記空間を画する外壁部であり、筒状部２３は上記空間を画する内壁部である。
図３（Ａ）へ示す通り、スリーブ２２の内周面には、側面視において、スリーブ２２の径の内側へスリーブ２２の外縁２２ａと隣接して座部２６が設けられている。座部２６は、下端がスリーブ２２の上記外縁２２ａの上方に位置する。この実施の形態において、座部２６の下面は平らである。座部２６は、平面視において環状に形成されている。座部２６が呈する環は、器具本体２と同心である。
この実施の形態において、座部２６は、平面視において、同心の二重の円として、２つ設けられているが、座部２６は１つでも、３つ以上でも実施できる。
図３（Ａ）へ示す通り、側面視において、スリーブ２２の外縁２２ａと筒状部２３の下縁２３ａとの間、正確には上記座部２６と筒状部２３の下縁２３ａとの間には間隔が開けられており、当該座部２６と筒状部２３の下縁２３ａとの間は、上記収容部ｋの開口部ｋ１を形成する。この開口部ｋ１は、平面視において、筒状の器具本体と同心の環を呈する。
図２（Ｂ）及び図３（Ａ）へ示す通り、筒状部２３の下縁２３ａには、平面視において周方向の互いに異なる位置へ複数の係止部２４が設けられている。係止部２４は、夫々筒状部２３の下縁２３ａから筒状部２３の径外方向へ向けて突出する小片である。
係止部２４は、図２（Ｂ）及び図４へ示す通り、スリーブ２２の周方向ｒに沿って設けられ、上面をほぼ水平な面とする板状部である。
平面視において、スリーブ２２の周方向ｒについて、開口部ｋ１の上記係止部２４同士の間には、間隔が開けられ、収容部ｋにおいて、平面視における当該係止部２４同士の間は、ガイド部ｋ２を構成する（図２（Ｂ）及び図４）。
図２（Ｂ）及び図４（Ｂ）へ示す通り、係止部２４におけるスリーブ２２周方向ｒの一端には、側面視においてスリーブ２２の周方向ｒに沿って当該一端から離れるにつれ下方へ向け斜めに伸びる傾斜部２５が延設されている。
尚、図２（Ｂ）は、説明の便宜上、接続用部４とスリーブ２２と筒状部２３の係止部２４以外の部分とを取り除いて描かれている。 As shown to FIG. 3 (A), between the inner peripheral surface of the sleeve 22 and the outer peripheral surface of the cylindrical part 23, the space | interval is opened about the inner / outer direction of the diameter of the instrument main body 2, and the space between both Constitutes a receiving portion k of the locked portion 24 to be described later. That is, when viewed from the side, the sleeve 22 is an outer wall portion that defines the space, and the cylindrical portion 23 is an inner wall portion that defines the space.
As shown in FIG. 3A, a seat portion 26 is provided on the inner peripheral surface of the sleeve 22 so as to be adjacent to the outer edge 22a of the sleeve 22 inside the diameter of the sleeve 22 in a side view. The lower end of the seat portion 26 is located above the outer edge 22 a of the sleeve 22. In this embodiment, the lower surface of the seat portion 26 is flat. The seat portion 26 is formed in an annular shape in plan view. The ring that the seat portion 26 exhibits is concentric with the instrument body 2.
In this embodiment, two seats 26 are provided as concentric double circles in a plan view, but one or three or more seats 26 can be implemented.
As shown in FIG. 3A, in a side view, between the outer edge 22a of the sleeve 22 and the lower edge 23a of the cylindrical portion 23, more precisely, between the seat portion 26 and the lower edge 23a of the cylindrical portion 23. Is spaced from each other, and an opening k1 of the housing portion k is formed between the seat portion 26 and the lower edge 23a of the tubular portion 23. The opening k1 has a ring concentric with the cylindrical instrument body in plan view.
As shown in FIGS. 2B and 3A, the lower edge 23a of the cylindrical portion 23 is provided with a plurality of locking portions 24 at different positions in the circumferential direction in plan view. Each of the locking portions 24 is a small piece that protrudes from the lower edge 23 a of the cylindrical portion 23 toward the radially outward direction of the cylindrical portion 23.
As shown in FIGS. 2B and 4, the locking portion 24 is a plate-like portion that is provided along the circumferential direction r of the sleeve 22 and has an upper surface that is a substantially horizontal surface.
In the plan view, with respect to the circumferential direction r of the sleeve 22, there is a gap between the locking portions 24 of the opening k1, and in the housing portion k, between the locking portions 24 in the plan view, The guide part k2 is configured (FIG. 2B and FIG. 4).
As shown in FIG. 2B and FIG. 4B, one end of the locking portion 24 in the circumferential direction r of the sleeve 22 is directed downward along the circumferential direction r of the sleeve 22 as viewed from the side. An inclined portion 25 extending obliquely is extended.
Note that FIG. 2B is drawn with the connection portion 4, the sleeve 22, and portions other than the locking portion 24 of the cylindrical portion 23 removed for convenience of explanation.

上記シャーシ６は、器具本体２の上部に設けられて、器具本体２の上面を構成する、冷間圧延鋼板でできた円盤である。シャーシ６は、図１（Ａ）へ示す通り、器具本体２の上面を構成すべく、盤面を上下に向け水平に配されている。
前述の通り、上記シャーシ６は、器具本体２の上面部として、器具本体２のフランジ部２０に取り付けられて、器具本体２の上記開口部を塞ぐ。
詳しくは、側面視において、シャーシ６は、フランジ部２０の上記窓部２１に重なる部位が、下方への隆起部６１として、上方から窓部２１内へ入りこむ（図３（Ａ））。 The chassis 6 is a disk made of a cold-rolled steel plate provided on the upper part of the instrument body 2 and constituting the upper surface of the instrument body 2. As shown in FIG. 1 (A), the chassis 6 is horizontally arranged with the board surface up and down to constitute the upper surface of the instrument body 2.
As described above, the chassis 6 is attached to the flange portion 20 of the instrument main body 2 as an upper surface portion of the instrument main body 2 and closes the opening of the instrument main body 2.
Specifically, in the side view, in the chassis 6, a portion of the flange portion 20 that overlaps the window portion 21 enters the window portion 21 from above as a protruding portion 61 downward (FIG. 3A).

（放熱部材３）
上記放熱部材３は、図１（Ａ）（Ｂ）及び図２（Ａ）に示す通り、上記の器具本体２に設けられた金属製の部材である。
放熱部材３は、平面視において、器具本体２を取り囲んで環状に配列された複数のアルミ製の構成板３０にて構成される。
側面視において、構成板３０の夫々は、上記ＬＥＤモジュール１を取り付ける取付用部３１と、当該取付用部３１を上記シャーシ６へ接続する接続用部３２とを備える。
上記取付用部３１の表面にＬＥＤモジュール１の上記基板１１の裏面が固定される。
構成板３０の夫々は、当該取付用部に取り付けられた上記ＬＥＤモジュール１の発する熱を放熱すると共に当該熱の一部を上記シャーシ６に伝導する。
側面視において、上記取付用部３１の夫々は、上記器具本体２への固定端を下端とし、上記シャーシ６に対して１０度〜４５度傾斜する。
平面視において、上記の通り、複数の構成板３０が環状に配され、側面視において、上記放熱部材３の下部は、構成板３０の上記取付用部３１の夫々を側面として下方に窄まる角錐台を呈する。
この実施の形態において、上記ＬＥＤモジュール１及び構成板３０は夫々８枚であり、放熱部材３は、８つ取付用部３１を備える。従って、平面視において、上記８枚の構成板３０が環状に配され、側面視において、上記放熱部材３の下部は、構成板３０の上記取付用部３１の夫々を側面として下方に窄まる八角錐台を呈する。放熱部材３の下端面は、正確には、平面視円形である。即ち、上記の逆八角錐台の各側面の下辺は、直線ではなく円弧である。
そして、側面視において、取付用部３１の夫々は、一端を下端とし、当該下端が器具本体２の底面の縁において器具本体２へ固定されている。取付用部３１の夫々は、上記の通り八角錐台の側面とされることによって、側面視において、他の一端を上端として、当該上端を上記下端の上方であって、構成板３０が呈する環の外側へ向ける。 (Heat dissipation member 3)
The said heat radiating member 3 is a metal member provided in said instrument main body 2, as shown to FIG. 1 (A) (B) and FIG. 2 (A).
The heat dissipating member 3 is constituted by a plurality of aluminum constituent plates 30 arranged in an annular shape so as to surround the instrument body 2 in a plan view.
In side view, each of the component plates 30 includes an attachment portion 31 for attaching the LED module 1 and a connection portion 32 for connecting the attachment portion 31 to the chassis 6.
The back surface of the substrate 11 of the LED module 1 is fixed to the surface of the mounting portion 31.
Each of the component plates 30 radiates heat generated by the LED module 1 attached to the attachment portion and conducts a part of the heat to the chassis 6.
In the side view, each of the attachment portions 31 is inclined at 10 to 45 degrees with respect to the chassis 6 with the fixed end to the instrument body 2 as a lower end.
In the plan view, as described above, the plurality of component plates 30 are arranged in a ring shape, and in the side view, the lower part of the heat radiating member 3 is a pyramid constricted downward with each of the mounting portions 31 of the component plate 30 as side surfaces. Presents a stand.
In this embodiment, the number of the LED modules 1 and the constituent plates 30 is eight, and the heat dissipating member 3 includes eight attaching portions 31. Accordingly, in the plan view, the eight component plates 30 are arranged in a ring shape, and in the side view, the lower part of the heat radiating member 3 is narrowed downward with the mounting portions 31 of the component plate 30 as side surfaces. Presents a truncated pyramid. To be precise, the lower end surface of the heat radiating member 3 is circular in plan view. That is, the lower side of each side surface of the inverted octagonal pyramid is not a straight line but an arc.
In the side view, each of the attachment portions 31 has one end as a lower end, and the lower end is fixed to the instrument body 2 at the edge of the bottom surface of the instrument body 2. Each of the mounting portions 31 is a side surface of the octagonal truncated pyramid as described above, so that in the side view, the other end is an upper end, the upper end is above the lower end, and the ring that the component plate 30 exhibits Turn outside.

上記角度に傾斜する取付用部３１の夫々に、各ＬＥＤモジュール１の基板１１裏面を固定する。ネジやボルト・ナットといった固定具を基板１１の前述の穴１５へ通すことにより、基板１１の裏面を取付用部３１の表面へ密着するように固定することができる。
上記の固定により、側面視において、当該基板１１をシャーシ６に対して１０度〜４５度傾斜させることができる。即ち、側面視において、部屋の床面に対し、当該基板１１を１０度〜４５度傾斜させることができる。
また、取付用部３１の夫々に、各ＬＥＤモジュール１の基板１１裏面を固定することによって、平面視において、上記複数のＬＥＤモジュール１を上記器具本体２へ環状に配列することができる。
基板１１に対してＬＥＤ１０の光軸は、側面視において、９０度の角度をなすものであり、基板１１の上記傾斜によって、側面視において、当該配列の環の外側下方に向けＬＥＤ１０の光軸を斜めとする。即ち、側面視において、部屋の床面に対し、ＬＥＤ１０の光軸を傾斜させることができる。
尚、図２（Ａ）において、八角錐台の手前の２つの側面は、ＬＥＤモジュール１を外された状態に描かれており、２枚の構成板３０の取付用部３１が露出している。図２（Ａ）へ示す通り、構成板３０の取付板３１はその表裏に貫通する貫通部３１を備える。この貫通部３１へ、電源と電気的に連絡する配線や、隣り合う基板１１同士を接続する配線１２が通される。 The back surface of the substrate 11 of each LED module 1 is fixed to each of the mounting portions 31 inclined at the above angle. By passing a fixture such as a screw, bolt or nut through the hole 15 of the substrate 11, the back surface of the substrate 11 can be fixed so as to be in close contact with the surface of the mounting portion 31.
By the above fixing, the board 11 can be inclined by 10 to 45 degrees with respect to the chassis 6 in a side view. That is, in the side view, the substrate 11 can be inclined by 10 degrees to 45 degrees with respect to the floor surface of the room.
Further, by fixing the back surface of the substrate 11 of each LED module 1 to each of the mounting portions 31, the plurality of LED modules 1 can be annularly arranged on the instrument body 2 in a plan view.
The optical axis of the LED 10 with respect to the substrate 11 forms an angle of 90 degrees in a side view, and the inclination of the substrate 11 causes the optical axis of the LED 10 to be directed outward and downward from the ring of the array in the side view. Slanted. That is, in the side view, the optical axis of the LED 10 can be inclined with respect to the floor surface of the room.
In FIG. 2A, the two side surfaces in front of the octagonal pyramid are drawn with the LED module 1 removed, and the mounting portions 31 of the two component plates 30 are exposed. . As shown in FIG. 2A, the mounting plate 31 of the component plate 30 includes a through portion 31 penetrating the front and back. A wiring that electrically communicates with the power source and a wiring 12 that connects the adjacent substrates 11 pass through the through-hole 31.

側面視において、上記構成板３０の接続用部３２は、取付用部３１の上端から、取付用部３１と反対に傾斜して上方へ伸びる。即ち、側面視において、接続用部３２と取付用部３１とは、くの字を呈する。更に、図１（Ｂ）及び図２（Ａ）へ示す通り、側面視において、接続用部３２の上端部３３は、接続用部３２の下部に対し屈曲して、フランジ部２０の径内方向に向け横方向に伸びる。
接続用部３２の当該上端部３３は、フランジ部２０の下方から、フランジ部２０の上記窓部２１へ配置される。当該配置によって、接続用部３２の上端部３３は、窓部２１にてシャーシ６の下面に沿わされる。
接続用部３２の上端部３３は、シャーシ６の前述の隆起部６１に、窓部２１を通じて、重ねられ、前記留め具５が通される。
図１（Ｂ）及び図３（Ａ）へ示す通り、接続用部３２の内側面には上下に伸びる複数の隆起３４が形成されている。この隆起３４は、接続用部３２を補強すると共に接続用部３２の表面積を大きくして、放熱効果を高める。 When viewed from the side, the connection portion 32 of the component plate 30 extends upward from the upper end of the attachment portion 31 while being inclined opposite to the attachment portion 31. That is, in the side view, the connection portion 32 and the attachment portion 31 have a dogleg shape. Further, as shown in FIGS. 1B and 2A, the upper end portion 33 of the connecting portion 32 is bent with respect to the lower portion of the connecting portion 32 in the side view, and the radially inward direction of the flange portion 20. Extends laterally toward.
The upper end portion 33 of the connection portion 32 is disposed on the window portion 21 of the flange portion 20 from below the flange portion 20. With this arrangement, the upper end portion 33 of the connection portion 32 extends along the lower surface of the chassis 6 at the window portion 21.
The upper end portion 33 of the connection portion 32 is overlapped with the above-described raised portion 61 of the chassis 6 through the window portion 21, and the fastener 5 is passed therethrough.
As shown in FIGS. 1 (B) and 3 (A), a plurality of ridges 34 extending vertically are formed on the inner surface of the connection portion 32. The ridge 34 reinforces the connection portion 32 and increases the surface area of the connection portion 32 to enhance the heat dissipation effect.

（留め具５）
留め具５は、ネジやピン、ボルト・ナットといった周知の固定手段にて実施すればよい。上記の通り窓部２１を通じて留め具５をシャーシ６と接続用部３２の上端部３３へ通すことにより、シャーシ６へ接続用部３２を固定すると共に、シャーシ６と接続用部３２を器具本体２へ固定する。また、器具本体２へ接続用部３２を固定することにより、構成板３０の上端を器具本体２へ固定することになる。
上記構成板３０のシャーシ６への固定により、構成板３０が受けたＬＥＤモジュール１の熱の一部が、構成板３０からシャーシ６へ伝えられる。
尚、この実施の形態では、シャーシ６の器具本体２への固定をより確実にするために、上記留め具５とは別に、シャーシ６の取り付け専用の、上記接続用部３２の固定に関与しない副留め具５１を設けている（図１（Ａ）及び図６（Ａ））。 (Fastening 5)
The fastener 5 may be implemented by a known fixing means such as a screw, a pin, or a bolt / nut. As described above, the fastener 5 is passed through the window 21 to the chassis 6 and the upper end portion 33 of the connection portion 32 to fix the connection portion 32 to the chassis 6 and to connect the chassis 6 and the connection portion 32 to the instrument body 2. Fix to. Further, by fixing the connection portion 32 to the instrument body 2, the upper end of the component plate 30 is fixed to the instrument body 2.
By fixing the component plate 30 to the chassis 6, a part of the heat of the LED module 1 received by the component plate 30 is transmitted from the component plate 30 to the chassis 6.
In this embodiment, in order to secure the fixing of the chassis 6 to the instrument body 2, it is not involved in the fixing of the connecting portion 32 dedicated to the mounting of the chassis 6 separately from the fastener 5. The sub fastener 51 is provided (FIG. 1 (A) and FIG. 6 (A)).

（コード８）
上記のコード８は、図１（Ａ）へ示す通り、天井から下方に間隔を開けて、シャーシ６と、当該シャーシ６が設けられた器具本体２を吊るす。
また、コード８は、内部に電気を供給する電線を有するものであり、上記の通り、シャーシ６と共に器具本体２を支持するほか、器具本体２に設けられた前述の交流・直流変換機や整流器といった電気機器（図示しない）を介して上記配線１２（図２（Ａ））と接続されて、ＬＥＤモジュール１へ電源を供給する。
コード８の上端側には、引掛部８１が設けられている。天井の電源供給部（引っ掛けシーリング）に、当該引掛部８１へ引っ掛けることにより、コード８の上端を、天井へ固定すると共に電源から照明器具へ電気を供給することができる。上記の接続固定具８２と引掛部８１は、周知の結合構造を採るものを採用する。
コード８が、照明器具を天井より下方に配置することにより、シャーシ６は、放熱部材３から伝達された熱を、天井と照明器具との間の空間を利用して、円滑に空気中へ放散することができる。
具体的には、ＬＥＤモジュール１の熱は、放熱部材３表面から直接空気中へ放出されると共に、図１（Ａ）において太字の矢印で示す通り、構成板３０の取付用部３１から接続用部３２を経て、シャーシ６へ伝わり、シャーシ６表面から照明器具の上方の空間へ向け放射される。図１（Ａ）において、煩雑を避けるため、太字の矢印は、側面視において、照明器具の左側にのみ付し、照明器具の右側については省略している。
上記の通りコード８は、照明器具の天井への支持と、電気の供給を兼ねるものとすることにより、照明器具の取り付けや配線を纏まりのよいものとすることができる。纏まりの良い分照明器具の設置も簡単に行える。
但し、当該電源の供給は、コード８とは別に設けられた電線によるものとし、コード８は専らシャーシ６や器具本体を支持するものを除外するものではない。
更に、この実施の形態では、キャップ８０がシャーシ６の上面中央に取り付けられる。このキャップ８０は、錐状の中空の部材であり、コード８の下端側を覆う。
この実の形態において、キャップ８０は、プラスチック製の部材である。この他、シャーシ６と共に放熱効果を促進するために、金属製の部材にてキャップ８０を形成してもよい。 (Code 8)
As shown in FIG. 1A, the cord 8 suspends the chassis 6 and the instrument body 2 provided with the chassis 6 with a space downward from the ceiling.
The cord 8 has an electric wire for supplying electricity to the inside, and as described above, supports the instrument main body 2 together with the chassis 6, and the above-described AC / DC converter and rectifier provided in the instrument main body 2. Is connected to the wiring 12 (FIG. 2A) via an electric device (not shown), and supplies power to the LED module 1.
A hook portion 81 is provided on the upper end side of the cord 8. By hooking the ceiling power supply section (hanging ceiling) on the hook section 81, the upper end of the cord 8 can be fixed to the ceiling and electricity can be supplied from the power source to the lighting fixture. The connection fixture 82 and the hooking portion 81 employ a well-known coupling structure.
The cord 8 arranges the lighting fixture below the ceiling, so that the chassis 6 smoothly dissipates the heat transmitted from the heat radiating member 3 into the air using the space between the ceiling and the lighting fixture. can do.
Specifically, the heat of the LED module 1 is released directly into the air from the surface of the heat radiating member 3 and is connected from the mounting portion 31 of the component plate 30 as shown by the bold arrows in FIG. The light is transmitted to the chassis 6 through the portion 32 and radiated from the surface of the chassis 6 toward the space above the lighting fixture. In FIG. 1A, in order to avoid complication, the bold arrow is attached only to the left side of the lighting fixture in a side view, and is omitted from the right side of the lighting fixture.
As described above, the cord 8 serves as a support for the ceiling of the lighting fixture and the supply of electricity, so that the installation and wiring of the lighting fixture can be integrated. It is easy to install lighting fixtures.
However, the power is supplied by an electric wire provided separately from the cord 8, and the cord 8 does not exclude the one that exclusively supports the chassis 6 and the instrument body.
Further, in this embodiment, the cap 80 is attached to the center of the upper surface of the chassis 6. The cap 80 is a conical hollow member and covers the lower end side of the cord 8.
In this actual embodiment, the cap 80 is a plastic member. In addition, in order to promote the heat radiation effect together with the chassis 6, the cap 80 may be formed of a metal member.

（光拡散部７）
この照明器具は、器具本体２の下部を覆うカバー７０を備える。
カバー７０は、光を拡散して透過することができる、透明又は半透明のプラスチックにて形成されている。この実施の形態において、カバー７０は、白色、特に乳半色のアクリルにて形成されている。但し、ＬＥＤの発する光を拡散して透過するものであれば、このような素材に限定するものではなく、他の素材にてカバー７０を形成することが可能である。
カバー７０は、前記光拡散部７と、中央部７２と、内襟部７８とを備える。
光拡散部７は、平面視において、取付用部３にて器具本体２へ取り付けられて上記環状に配列されたＬＥＤモジュール１を覆う環状のケースである。ケースである光拡散部７の上部は開口する。
中央部７２は、平面視において光拡散部７が呈する環の内側を塞ぐように、光拡散部７と一体に形成された板状部である。中央部７２は、図１（Ａ）へ示す通り、径の中心を最深部として、側面視において、上方へ後退する凹曲面を呈する。 (Light diffusion part 7)
The lighting fixture includes a cover 70 that covers the lower portion of the fixture body 2.
The cover 70 is formed of a transparent or translucent plastic that can diffuse and transmit light. In this embodiment, the cover 70 is formed of white, particularly milky-colored acrylic. However, as long as the light emitted from the LED is diffused and transmitted, the material is not limited to such a material, and the cover 70 can be formed of another material.
The cover 70 includes the light diffusion part 7, a center part 72, and an inner collar part 78.
The light diffusion part 7 is an annular case that covers the LED modules 1 that are attached to the instrument body 2 by the attachment part 3 and arranged in an annular shape in plan view. The upper part of the light diffusing part 7 as a case is opened.
The central portion 72 is a plate-like portion that is formed integrally with the light diffusing portion 7 so as to close the inside of the ring that the light diffusing portion 7 exhibits in plan view. As shown in FIG. 1A, the central portion 72 has a concave curved surface that recedes upward in a side view with the center of the diameter being the deepest portion.

上記光拡散部７は、ＬＥＤ１からの直接光を拡散して照明器具の外部へ透過する。
平面視において、光拡散部７の外径、即ち、カバー７０の最大径は、上記スリーブ２２の径よりも大きい。
光拡散部７は、図１（Ｂ）へ示す通り、側面視においてＬＥＤ１０の光軸とほぼ直交する主透過部７１と、上方透過部７３とを備える。
平面視において、主透過部７１と上方透過部７３は、夫々環状に形成されている。
平面視において、上記主透過部７１は機器本体２の径方向の外側に位置する。
上方透過部７３は、主透過部７１の径の内外方向について、主透過部７１の外側に設けられている。上方透過部７３は、主透過部７１と一体に設けられる。上方透過部７３は、平面視において光拡散部７の外径部となる主透過部７１の外縁から、内側に折り返された状態に形成されて、側面視において主透過部７１の上方へ位置する。
カバー７０を器具本体２の下方へ、器具本体２と同心に配置した際、平面視において、上方透過部７３は、前記スリーブ２２の外側に位置するものであり、側面視において、上方透過部７３は、スリーブ２２と主透過部７１との間を覆う傾斜部位である。
側面視において、上方透過部７３は、ＬＥＤ１からの直接光を拡散して照明器具の外部へ透過すると共に主透過７１の内面にて反射しＬＥＤ１の光をスリーブ２２の外側斜め上方へ向けて透過する。
上記の中央部７２は、器具本体２の真下に位置する。中央部７２の上面と器具本体２底部との間に間隔が設けられている。中央部７２は、ＬＥＤ１０から直接・間接的に器具本体２の真下に向かって斜め下方に進行する光を拡散してカバー７０外部へ透過する。 The light diffusing unit 7 diffuses the direct light from the LED 1 and transmits it to the outside of the lighting fixture.
In plan view, the outer diameter of the light diffusing portion 7, that is, the maximum diameter of the cover 70 is larger than the diameter of the sleeve 22.
As shown in FIG. 1B, the light diffusion unit 7 includes a main transmission unit 71 and an upper transmission unit 73 that are substantially orthogonal to the optical axis of the LED 10 in a side view.
In plan view, the main transmission part 71 and the upper transmission part 73 are each formed in an annular shape.
In the plan view, the main transmission part 71 is located on the outer side in the radial direction of the device main body 2.
The upper transmission part 73 is provided outside the main transmission part 71 in the inner and outer directions of the diameter of the main transmission part 71. The upper transmission part 73 is provided integrally with the main transmission part 71. The upper transmission part 73 is formed so as to be folded inward from the outer edge of the main transmission part 71 serving as the outer diameter part of the light diffusion part 7 in plan view, and is positioned above the main transmission part 71 in side view. .
When the cover 70 is disposed below the instrument body 2 and concentrically with the instrument body 2, the upper transmission part 73 is located outside the sleeve 22 in plan view, and the upper transmission part 73 in side view. Is an inclined portion covering between the sleeve 22 and the main transmission part 71.
In a side view, the upper transmission part 73 diffuses the direct light from the LED 1 and transmits it to the outside of the luminaire and reflects it from the inner surface of the main transmission 71 to transmit the light of the LED 1 obliquely upward to the outside of the sleeve 22. To do.
The central portion 72 is located directly below the instrument body 2. A space is provided between the upper surface of the central portion 72 and the bottom of the instrument body 2. The central portion 72 diffuses light that travels obliquely downward from the LED 10 directly or indirectly directly below the instrument body 2 and transmits the light to the outside of the cover 70.

内襟部７８は、図２（Ｃ）及び図３（Ａ）へ示す通り、側面視において、光拡散部７の上方透過部７２の上端から、上面を水平にして、光拡散部７の径内方向へ向けて伸びる、平面視環状の板状部である。
内襟部７８の内径部には、内襟部７８の径内側方向へ突出する複数の被係止部７５が設けられている。被係止部７５同士は、平面視において、内襟部７８の周方向について、間隔を開けて設けられている。内襟部７８の周方向における、被係止部７５同士の当該間隔区間を以下間欠部７６と呼ぶ。
平面視において、器具本体２と同心となるように、器具本体２の下方へカバー７０を配置した状態において、スリーブ２２の外縁２２ａは、内襟部７８上面の上方に位置し、上記各被係止部７５は、器具本体２のスリーブ２２の径内外方向について、前記開口部ｋ１内に位置する。上記配置状態において、平面視における被係止部７５の器具本体２の中心からの距離は、平面視における係止部２４の器具本体２の中心からの距離と等しい。
被係止部７５は、上方に隆起する起立部７７を備える。
図２（Ｂ）及び図４（Ａ）は、カバー７０を、器具本体２へ固定する前の状態を示している。
図２（Ｂ）及び図４（Ａ）へ示す通り、カバー７０を器具本体２の下部へ配置し、収容部ｋにおける前記ガイド部ｋ２の開口部ｋ１から上記収容部ｋ内へ被係止部７５を挿入する。カバー７０を器具本体２の周方向へ回転させて、上記間欠部７６へ、前記の傾斜部２５及び係止部２４を、当該順に通す。ガイド部ｋ２は、上記回転に伴い、被係止部７５を係止部２４へ向けてガイドする。
図４（Ｂ）に被係止部７５を一点鎖線で示す。この図４（Ｂ）へ示す通り、傾斜部２５へ到達した被係止部７５は、傾斜部２５に案内されて、図４（Ｃ）へ示す通り、係止部２４の上面へ移動する。
上記スリーブ２２内部において、上記傾斜部２５側を入口側とし係止部２４を挟んで傾斜部２５と反対側は、筒状部２３の外壁の一部にて行き止まりとなっている。
被係止部７５の係止部２４上面への移行によって、被係止部７５の係止部２４への係止は完了する。
上記の通り、被係止部７５を係止部２４へ係止することにより、カバー７０を器具本体２へ仮止めすることができる。 As shown in FIGS. 2C and 3A, the inner collar portion 78 has a top surface that is horizontal from the upper end of the upper transmission portion 72 of the light diffusing portion 7 in a side view, and the diameter of the light diffusing portion 7. It is a plate-like portion that is annular in a plan view and extends inward.
A plurality of locked portions 75 projecting inwardly of the inner collar portion 78 are provided on the inner diameter portion of the inner collar portion 78. The locked portions 75 are provided at an interval in the circumferential direction of the inner collar portion 78 in plan view. The interval section between the locked portions 75 in the circumferential direction of the inner collar portion 78 is hereinafter referred to as an intermittent portion 76.
In a state where the cover 70 is disposed below the instrument body 2 so as to be concentric with the instrument body 2 in a plan view, the outer edge 22a of the sleeve 22 is located above the upper surface of the inner collar portion 78, and The stop portion 75 is located in the opening k1 in the inner and outer diameter directions of the sleeve 22 of the instrument body 2. In the arrangement state, the distance of the locked portion 75 from the center of the instrument body 2 in plan view is equal to the distance of the locking portion 24 from the center of the instrument body 2 in plan view.
The locked portion 75 includes an upright portion 77 that protrudes upward.
FIGS. 2B and 4A show a state before the cover 70 is fixed to the instrument body 2.
As shown in FIGS. 2B and 4A, the cover 70 is arranged at the lower part of the instrument body 2, and the locked portion is inserted into the housing portion k from the opening k1 of the guide portion k2 in the housing portion k. 75 is inserted. The cover 70 is rotated in the circumferential direction of the instrument body 2, and the inclined portion 25 and the locking portion 24 are passed through the intermittent portion 76 in this order. The guide part k <b> 2 guides the locked part 75 toward the locking part 24 with the rotation.
FIG. 4B shows the locked portion 75 with a one-dot chain line. As shown in FIG. 4B, the locked portion 75 that has reached the inclined portion 25 is guided by the inclined portion 25 and moves to the upper surface of the engaging portion 24 as shown in FIG.
Inside the sleeve 22, the inclined portion 25 side is the inlet side, and the opposite side of the inclined portion 25 across the locking portion 24 is a dead end at a part of the outer wall of the cylindrical portion 23.
By the transition of the locked portion 75 to the upper surface of the locking portion 24, the locking of the locked portion 75 to the locking portion 24 is completed.
As described above, the cover 70 can be temporarily fixed to the instrument body 2 by locking the locked portion 75 to the locking portion 24.

上記仮止め後、図２（Ｃ）及び図３（Ａ）へ示す通り、スリーブ２２へ、ネジやボルトといった、ねじ山を備えた上記固定具４をねじ込む。この固定具４によって、被係止部７５が係止部２４の上面から上記入口側へ後退するのを阻止する。
固定具は、工具によって取り外ことができるものである。即ち、分解しなければ、カバー７０を器具本体から外すことができない。
上記の係止部２４と被係止部７５と収容部ｋと固定具４とが、カバー７０を器具本体２へ固定する固定機構を構成する。
上記固定具４の装着にて、カバー７０を器具本体２から、ユーザーサイドにて外せないようにし、ユーザーが加熱したＬＥＤの基板１１へ触れるを防ぐことができる。
但し、上記固定機構は、被係止部７５を係止部２４へ係止した後被係止部７５の後戻りを阻止する周知の嵌め殺しの構成を、このような固定具４に代えて、或いは固定具４と共に設けるものとしても実施できる。
被係止部２４の前記起立部７７先端は、スリーブ２２の内面に当接する。当該当接により、被係止部７５の係止部２４への係止において、カバー７０は、上記被係止部７５以外の部分で、器具本体２と接触しない。
即ち、起立部７７の上記当接により、内襟部７８の上面と、スリーブ２２の外縁２３ａとの間には、隙間が開けられる。 After the temporary fixing, as shown in FIGS. 2C and 3A, the fixing tool 4 having a screw thread such as a screw or a bolt is screwed into the sleeve 22. The fixing member 4 prevents the locked portion 75 from retreating from the upper surface of the locking portion 24 toward the inlet side.
The fixture can be removed with a tool. That is, the cover 70 cannot be removed from the instrument body unless it is disassembled.
The locking part 24, the locked part 75, the housing part k, and the fixture 4 constitute a fixing mechanism that fixes the cover 70 to the instrument body 2.
By mounting the fixture 4, it is possible to prevent the cover 70 from being removed from the instrument main body 2 on the user side and to prevent the user from touching the heated LED substrate 11.
However, the fixing mechanism described above is replaced with such a fixing tool 4 instead of the well-known fitting killing structure that prevents the locked portion 75 from returning backward after the locked portion 75 is locked to the locking portion 24. Or it can implement also as what is provided with the fixing tool 4. FIG.
The leading end of the standing portion 77 of the locked portion 24 abuts on the inner surface of the sleeve 22. Due to the contact, the cover 70 is not in contact with the instrument body 2 at a portion other than the locked portion 75 when the locked portion 75 is locked to the locking portion 24.
That is, a gap is formed between the upper surface of the inner collar portion 78 and the outer edge 23 a of the sleeve 22 by the contact of the standing portion 77.

（虫侵入防止部）
上記の座部２６の下面に、虫侵入防止部２５が設けられる。虫侵入防止部２５は、押圧されることにより弾性変形する弾性変形部材である。上記虫侵入防止部２５は、上記スリーブ２２の外縁２２ａに沿って当該外縁２２ａ又は上記起立部７７よりも当該外縁２２ａ側に設けられ、座部２６に沿って平面視環状に配された部材である。
座部２６に設けられた虫侵入防止部２５の下端は、スリーブ２２の外縁２２ａよりも下方に突出する。
虫侵入防止部２５には、スポンジやゴム、ウレタンといった弾力性を有するクッション材を採用することができる。この実施の形態では、虫侵入防止部２５にはスポンジを採用する。
上記虫侵入防止部２５は、上記カバー７０と上記器具本体２との間に介され、係止部２４への被係止部７５の上記係止により、上記カバー７０の内襟部７８と上記器具本体２のスリーブ２２の外縁２２ａとに挟まれて弾性変形し、上記カバー７０と上記器具本体２と間を密閉し、スリーブ２２外縁２２ａとカバー７０の上記内襟部７８との間を通って虫が外部からカバー７０内に侵入するのを防止する。
また、弾性変形した虫侵入防止部にて、被係止部７５は係止部２４へ付勢され、係止がより強固なものとされる。
カバー７０と器具本体２とを異なる素材にて形成すると、熱膨張率・熱収縮率の違いにより、カバー７０と器具本体２の収縮や膨張の際に、器具本体２とカバー７０との間において、音鳴りが生じる。
器具本体２とカバー７０との間に上記虫侵入防止部２５を介すると共に、起立部７７により、被係止部７５の係止部２４への係止中、カバー７０の上端開口部において、カバー７０を上記被係止部７５以外の部分で、器具本体２と接触させないことにより、上記音鳴りを抑制することができる。虫侵入防止部２５にスポンジを採用するのが、音鳴り防止に効果的である。 (Insect Invasion Prevention Section)
An insect intrusion prevention unit 25 is provided on the lower surface of the seat portion 26. The insect intrusion prevention unit 25 is an elastically deformable member that is elastically deformed when pressed. The insect intrusion prevention unit 25 is a member that is provided along the outer edge 22a of the sleeve 22 on the outer edge 22a side of the outer edge 22a or the upright portion 77, and is arranged in a ring shape in plan view along the seat portion 26. is there.
The lower end of the insect intrusion prevention unit 25 provided on the seat 26 protrudes downward from the outer edge 22 a of the sleeve 22.
For the insect intrusion prevention unit 25, a cushioning material having elasticity such as sponge, rubber, or urethane can be employed. In this embodiment, a sponge is used for the insect intrusion prevention unit 25.
The insect intrusion prevention unit 25 is interposed between the cover 70 and the instrument main body 2, and the locking of the locked portion 75 to the locking portion 24 causes the inner collar portion 78 of the cover 70 and the It is sandwiched between the outer edge 22a of the sleeve 22 of the instrument body 2 and elastically deformed to seal between the cover 70 and the instrument body 2 and pass between the outer edge 22a of the sleeve 22 and the inner collar portion 78 of the cover 70. The insect is prevented from entering the cover 70 from the outside.
Further, the locked portion 75 is urged to the locking portion 24 by the elastically deformed insect intrusion preventing portion, and the locking is made stronger.
If the cover 70 and the instrument main body 2 are formed of different materials, the cover 70 and the instrument main body 2 may be contracted or expanded between the instrument main body 2 and the cover 70 due to the difference in thermal expansion coefficient / thermal contraction rate. , Noise is produced.
While the insect intrusion prevention unit 25 is interposed between the instrument body 2 and the cover 70, the cover 70 is covered at the upper end opening of the cover 70 while the standing portion 77 is locked to the locking portion 24. By preventing 70 from coming into contact with the instrument main body 2 at a portion other than the locked portion 75, it is possible to suppress the noise. Employing a sponge for the insect intrusion prevention unit 25 is effective in preventing sound noise.

（配光について）
図５を用いて、本願発明に係る上記照明器具の配光について説明する。図５に示す照明器具は、側面視において、ＬＥＤモジュール１の基板１１を、シャーシ６に対して、言い換えれば床面に対して２５度の角度傾斜させたものである。
図５では、直接光のみ示し、反射光については省略する。
本願発明の配光を実線の直線で示す。また、基板１１を水平（傾斜角度０度）に配置する、従来の照明器具の配光を点線で示す。また、比較例として、基板１１を鉛直に立てた状態（９０度）の配光を一点鎖線で示す。上記実線同士、点線同士、一点鎖線同士に挟まれた、本願、従来例、比較例夫々の配光各は、何れも１２０度である。
図５へ示す通り、カバー内の反射を除いた、直接光の配光について見れば、本願発明に係る照明器具は、ＬＥＤ同士で重なるところが少なく、照明器具のほぼ真横まで配光されている。
これに対して、従来の基板１１を水平とするものは、ＬＥＤ間の配光の重なりが本願の照明器具に比して極めて大きく、横方向には殆ど配光されていない。
また、上記比較例では、真横や上方への配光がなされているものの、肝心の照明器具の真下については配光されず、中抜け状態となっている。 (About light distribution)
The light distribution of the lighting apparatus according to the present invention will be described with reference to FIG. The lighting fixture shown in FIG. 5 is obtained by inclining the substrate 11 of the LED module 1 with respect to the chassis 6, in other words, an angle of 25 degrees with respect to the floor surface in a side view.
In FIG. 5, only direct light is shown, and reflected light is omitted.
The light distribution of the present invention is indicated by a solid line. Moreover, the light distribution of the conventional lighting fixture which arrange | positions the board | substrate 11 horizontally (inclination angle 0 degree) is shown with a dotted line. As a comparative example, the light distribution in a state where the substrate 11 is set up vertically (90 degrees) is indicated by a one-dot chain line. Each of the light distributions of the present application, the conventional example, and the comparative example sandwiched between the solid lines, dotted lines, and alternate long and short dash lines is 120 degrees.
As shown in FIG. 5, in terms of direct light distribution, excluding reflection in the cover, the luminaire according to the present invention has little overlap between the LEDs, and is distributed almost directly to the luminaire.
On the other hand, in the case where the conventional substrate 11 is horizontal, the overlap of light distribution between the LEDs is extremely larger than that of the lighting fixture of the present application, and almost no light is distributed in the lateral direction.
In the comparative example, although light distribution is performed directly beside or upward, light is not distributed underneath the luminaire, which is important, and is in a hollow state.

（変更例）
図３（Ｂ）へ示す通り、虫侵入防止部２５は、スリーブ２２の外縁２２ａの下面を覆うように、スリーブ２２へ設けるものとしても実施できる。
図１〜図３へ示す各実施の形態において、放熱部材３は、複数の構成板３０にて分割して形成されたものであったが、一つの金属部材で一体に形成するものとしてもよい。
また、放熱部材３の下部は、上記の実施の形態において、図２（Ａ）へ示す通り、八角錐台を呈するものとした。取付用部３は、この他、三角〜七角錐台或いは九角錐以上の多角錐台を呈するものとしても実施できる。更には、放熱部材３の下部は、円錐台を呈するものとしても実施できる。
また、放熱部材３の構成板３０に上記接続用部３２を設けず、取付用部３１を直接シャーシ６へ接続するものとしても実施できる。更には、放熱部材３をシャーシ６と一体に形成するものとしてもよい。放熱部材３をシャーシ６と一体に形成する場合、両者を共にアルミ又は冷間圧延鋼板にて形成するものとすればよい。
放熱部材３は、アルミ製のものに限定するものではなく、ＬＥＤモジュール１の熱を伝導し放熱するに適した他の金属を用いて実施することも可能である。
上記図示した実施の形態において、開口部ｋ１は、平面視環状に形成されたものを示したが、弧状であっても実施できる。
また、上記おいて、係止部２４は、筒状部２３へ設けられて筒状部２３の径外方向へ突出するものとした。この他、係止部２４は、スリーブ２２へ設けられてスリーブ２２の径内方向へ突出するものとしてもよい。
係止部２４と被係止部７５については、互いの構成が、図示した実施の形態と逆であっても実施できる。係止部２４と被係止部７５を図示した実施の形態と逆にする場合、被係止部７５の上記収容部ｋを、カバー７０側に形成すればよい。
更に、上記各実施の形態において、虫侵入防止部２５は、器具本体２のフランジ２２へ固定するものとしたが、カバー７０側へ固定するものとしても実施できる。 (Example of change)
As shown in FIG. 3B, the insect intrusion prevention unit 25 can also be implemented as being provided on the sleeve 22 so as to cover the lower surface of the outer edge 22 a of the sleeve 22.
In each embodiment shown in FIGS. 1 to 3, the heat radiating member 3 is formed by being divided by a plurality of component plates 30, but may be integrally formed by one metal member. .
Moreover, the lower part of the heat radiating member 3 shall exhibit an octagonal frustum as shown to FIG. 2 (A) in said embodiment. In addition to this, the mounting portion 3 can be implemented as a triangular to heptagonal pyramid or a polygonal pyramid having nine or more pyramids. Furthermore, the lower part of the heat radiating member 3 can be implemented as a truncated cone.
Further, the connecting plate 31 may be directly connected to the chassis 6 without providing the connecting portion 32 on the component plate 30 of the heat radiating member 3. Furthermore, the heat radiating member 3 may be formed integrally with the chassis 6. When the heat radiating member 3 is formed integrally with the chassis 6, both of them may be formed of aluminum or a cold rolled steel plate.
The heat radiating member 3 is not limited to the one made of aluminum, and can be implemented using other metals suitable for conducting heat of the LED module 1 and radiating heat.
In the illustrated embodiment, the opening k1 is formed in an annular shape in plan view, but can be implemented even in an arc shape.
In the above description, the locking portion 24 is provided on the cylindrical portion 23 and protrudes outward in the radial direction of the cylindrical portion 23. In addition, the locking portion 24 may be provided on the sleeve 22 and protrude in the radially inward direction of the sleeve 22.
About the latching | locking part 24 and the to-be-latched part 75, even if a mutual structure is reverse to embodiment shown in figure, it can implement. When the locking portion 24 and the locked portion 75 are reversed from the illustrated embodiment, the housing portion k of the locked portion 75 may be formed on the cover 70 side.
Furthermore, in each said embodiment, although the insect intrusion prevention part 25 shall be fixed to the flange 22 of the instrument main body 2, it can implement also as what fixes to the cover 70 side.

１ＬＥＤ
２器具本体
３放熱部材
４固定具
５留め具
６シャーシ 1 LED
2 Instrument body 3 Heat dissipation member 4 Fixing tool 5 Fastening tool 6 Chassis

Claims

In a hanging type lighting fixture that hangs from the ceiling and illuminates the room,
A plurality of LEDs that are light sources, an instrument body to which the LED is attached, a cover that is attached to the instrument body and covers the LED, a fixing mechanism that fixes the cover to the instrument body, and insects intruding into the cover With an insect intrusion prevention unit to prevent,
The upper end of the cover opens at the upper end opening, is attached to the instrument body from below the instrument, and covers the light source,
The fixing mechanism includes a locking portion, a locked portion, a storage portion, and a fixture, and the cover is attached to the instrument body by rotating the cover with respect to the instrument body. Yes,
The instrument body is a cylindrical body with the central axis up and down, with a bottom at the lower end,
Above the plurality of LEDs, on the outer periphery of the instrument body, a sleeve and a cylindrical part concentric with the instrument body are provided integrally with the instrument body,
The sleeve is a radially outward direction of the instrument body around the instrument body in plan view and projects downward.
The cylindrical portion is provided inside the diameter of the sleeve,
The housing portion is a space provided between the sleeve and the tubular portion, and an opening between the outer edge of the sleeve and the lower edge of the tubular portion forms the housing portion,
A plurality of the locking portions are provided on the outer edge of the cylindrical portion, and protrude from the lower edge of the cylindrical portion toward the outside of the diameter of the cylindrical portion,
The plurality of locking portions are provided with an interval in the circumferential direction of the sleeve,
About the circumferential direction of the sleeve, the section that is spaced apart in the opening of the housing portion constitutes a guide portion,
At one end in the circumferential direction of the tubular portion in the locking portion, an inclined portion that extends obliquely downward as the distance from the one end extends along the outer periphery of the tubular portion,
The cover includes a light diffusion portion, a center portion, and an inner collar portion,
The light diffusion portion is a case in a ring shape in plan view that covers the accommodation space of the LED provided in the instrument body and diffuses the light of the LED and transmits it to the outside of the cover.
The diameter of the light diffusion part is larger than the diameter of the sleeve,
The central portion is provided inside the ring exhibited by the annular light diffusing portion, and is formed integrally with the light diffusing portion to block the inside of the ring exhibited by the light diffusing portion,
The inner collar portion is an annular plate-like portion in plan view formed integrally with the light diffusion portion from the outer edge of the light diffusion portion toward the inside of the diameter of the light diffusion portion,
A plurality of the locked portions are provided in the inner diameter portion of the inner collar portion, and protrude toward the inside of the diameter of the inner collar portion,
The plurality of locked portions are arranged at intervals in the circumferential direction of the inner collar portion,
Each of the locked portions includes an upright portion that protrudes upward,
In a state where the cover is disposed concentrically with the instrument body on the lower surface of the instrument body, the distance from the center of the instrument body of the locked part in plan view is the distance from the center of the instrument body of the latch part in plan view. Is equal to the distance,
The cover is disposed concentrically with the instrument body on the lower surface of the instrument body, the locked part is accommodated from the guide part to the accommodation part, and the cover is rotated with respect to the instrument body. The locked portion guided by the guide portion moves to the upper surface of the locking portion via the inclined portion,
In the sleeve, the inclined portion side is the inlet side, and the side opposite to the inclined portion with the engaging portion interposed therebetween is a dead end,
Due to the movement of the locked portion, the upper end of the standing portion abuts the lower surface of the sleeve in the housing portion, and the outer edge of the sleeve is prevented from contacting the upper surface of the inner collar portion of the cover,
The fixing tool is a member having a screw thread, and the fixing tool is screwed in from the outside of the sleeve after the locking to the locking part of the locked part is completed by the movement, and is engaged. The stopping portion prevents the locking portion from moving backward from the locking portion to the inlet side, and the fixing tool is removable by a tool,
The insect intrusion prevention unit is a sponge in an annular shape in plan view provided on the outer edge side of the outer edge or the upright part along the outer edge of the sleeve, and the lower end of the insect invasion prevention unit is Projecting below the outer edge,
By attaching the cover to the instrument body, the insect intrusion prevention part is elastically deformed by being sandwiched between the outer edge of the sleeve and the upper surface of the inner collar part of the cover, and the outer edge of the sleeve and the inner collar part of the cover It seals the gap between the top surface,
The lighting apparatus according to claim 1, wherein the locked portion is pressed against the upper surface of the locking portion by urging of the elastically deformed insect intrusion preventing portion.

A lighting device that is installed indoors or outdoors and illuminates the surroundings,
A light source, an instrument body to which the light source is attached, a cover attached to the instrument body to cover the light source, a fixing mechanism for attaching the cover to the instrument body, and between the instrument body and the cover into the cover With an insect intrusion prevention unit that prevents insects from invading,
The cover includes one end opening that opens to the side facing the instrument body, and the cover is attached to the instrument body with the one end opening side facing the instrument body to cover the light source. ,
The cover is provided with the one end opening above, and is attached to the instrument body from below the instrument body,
The fixing mechanism allows the cover to be attached to the instrument body by rotating the cover relative to the instrument body with the axial direction of the central axis of rotation as the vertical direction .
The fixing mechanism includes a locking portion provided on one of the instrument body and the cover,
A guide portion formed on the one of the instrument body and the cover provided with a locking portion;
A locked portion that is provided on the other side of the instrument body and the cover and is locked to the locking portion;
The distance from the center of rotation of the locked portion is the same as the distance from the center of rotation of the locking portion;
The guide part is provided from the position away from the locking part to the locking part in the direction of rotation, and guides the locked part to the locking part.
At one end of the locking portion in the direction of rotation, an inclined portion that extends obliquely downward as the distance from the end extends along the direction of rotation is extended.
By rotating the cover with respect to the instrument body, the locked portion guided by the guide portion moves to the upper surface of the locking portion via the inclined portion,
When the locked portion rides on the locking portion, the locked portion is locked to the locking portion, and the cover approaches the instrument body,
By aligning the locked portion with the guide portion, the locked portion can be locked to the locking portion by rotation of the cover, and the engagement of the locked portion to the locking portion can be performed. By stopping, the cover can be attached to the instrument body,
The insect intrusion prevention unit is an elastically deformable member interposed between the cover and the instrument main body at the edge of the one end opening or outside the edge, and is annular in plan view continuously arranged in the rotation direction It is a member of
The elastic deformation member is sandwiched between the cover and the instrument main body and elastically deformed by the locking of the locked part to the locking part, and seals between the cover and the instrument main body. ,
Luminaires an elastic deformed elastically deformable member, characterized in that the locked portion is intended to be urged to the locking portion.

One of the instrument body and the cover provided with the locking portion is provided with a receiving portion for the locked portion,
The accommodating portion includes an annular opening extending in an arc shape around the center of rotation or centered on the center of rotation,
The locking portion is arranged in the opening with respect to the inner and outer directions and the circumferential direction of the diameter of the opening,
The opening includes, as the guide portion, a section where the locking portion is not formed adjacent to the locking portion in the circumferential direction.
The locked portion includes an upright portion that protrudes in the depth direction of the accommodating portion,
When the cover is attached to the instrument body, the upright part abuts a surface defining the accommodation part in the accommodation part, and a part other than the locking part directly contacts the instrument body in the upper end opening of the cover. To prevent contact,
The lighting device according to claim 2, wherein the cover is in direct contact with the device main body only at the locked portion at the upper end opening.

The instrument body includes a sleeve that is above a portion to which the light source is attached and protrudes from a side surface of the instrument body,
In the side view, the sleeve is inclined and protrudes downward as it proceeds in the radially outward direction of the instrument body,
The space between the instrument body side surface and the sleeve constitutes the housing portion,
The locking portion projects between the light source and the sleeve from the side of the instrument body in the radially outward direction of the instrument body,
The fixing mechanism includes a fixing tool,
The fixture is a member having a thread,
In the housing portion, the point where the locked portion rides on the locking portion is a dead end,
After the locking is completed to the locking portion of the locked portion by the movement, the fixing tool is screwed in from the outside of the sleeve to prevent the locked portion from retreating from above the locking portion. Is what
The lighting fixture according to claim 2 or 3, wherein the fixture is removable with a tool.

The rotation of the cover is performed around the center of the instrument body in plan view ,
In the flat plane view, a plurality of the locking portions are provided at intervals, the interval between the engaging portion of the receiving portion, constitute the Kaido portion,
The upper end of the cover includes an annular inner collar projecting inwardly of the diameter of the cover, and the inner diameter of the inner collar defines the one end opening,
The locked portion protrudes from the inner diameter portion of the inner collar portion toward the inner diameter of the cover,
In the plan view, the plurality of locked portions are provided with an interval between them,
The insect intrusion prevention portion is interposed between the outer edge of the sleeve and the upper surface of the inner collar portion in a side view, and approaches the outer edge of the sleeve closer to the locking portion of the locked portion. It is sandwiched between the upper surface of the inner collar and elastically deformed, and seals between the outer edge of the sleeve and the upper surface of the inner collar,
The lighting apparatus according to claim 4 , wherein the insect intrusion prevention unit is an elastic member such as a sponge.