JP6603878B2

JP6603878B2 - lighting equipment

Info

Publication number: JP6603878B2
Application number: JP2016046426A
Authority: JP
Inventors: 友樹白川
Original assignee: Panasonic Intellectual Property Management Co Ltd
Current assignee: Panasonic Intellectual Property Management Co Ltd
Priority date: 2016-03-10
Filing date: 2016-03-10
Publication date: 2019-11-13
Anticipated expiration: 2036-03-10
Also published as: JP2017162696A

Description

本発明は、透過性の光学部材を備える照明器具に関する。 The present invention relates to a luminaire including a transmissive optical member.

従来、埋込型の照明器具として、例えば、ダウンライトやスポットライトのように天井に埋込配設されて下方に光を照射する天井埋込型照明器具、あるいは、地中に埋込配設されて上方に光を照射する地中埋込型照明器具等が知られている。従来の埋込型照明器具として、例えば特許文献１には、ダウンライトに関する照明器具が開示されている。 Conventionally, as embedded lighting fixtures, for example, embedded ceiling lighting fixtures that are embedded in the ceiling and emit light downward, such as downlights and spotlights, or embedded in the ground Underground lighting fixtures that emit light upward are known. As a conventional embedded lighting fixture, for example, Patent Literature 1 discloses a lighting fixture related to a downlight.

特開２０１１−２１０６２１JP2011-210621

一般に、従来のダウンライトでは、点灯時に光源部から発せられる熱によって、光学部材が熱劣化する。 In general, in the conventional downlight, the optical member is thermally deteriorated by heat generated from the light source unit when the light is turned on.

特に、反射部材と光学部材との間に形成される空間内に虫が混入するのを防止するために、当該空間を外気と繋がらないように密閉する構造が採用されることもある。密閉構造が採用されたダウンライトでは、反射部材や光学部材との間の温度上昇が顕著になりやすく、各々の部材の熱劣化が著しくなることがある。 In particular, in order to prevent insects from being mixed into the space formed between the reflecting member and the optical member, a structure in which the space is sealed so as not to be connected to the outside air may be employed. In a downlight employing a hermetically sealed structure, the temperature rise between the reflecting member and the optical member tends to become remarkable, and the thermal deterioration of each member may become remarkable.

本発明は、反射部材と光学部材との間の空間の温度上昇を抑制することができる照明器具を提供する。 The present invention provides a lighting fixture that can suppress an increase in the temperature of the space between the reflecting member and the optical member.

上記課題を解決するために、本発明に係る照明器具は、有底筒状の器具本体と、器具本体内の底部に配置される光源部と、入射開口部と出射開口部とで両端に開口した筒状の部材であって、器具本体内に配置される反射部材と、反射部材の出射開口部を塞ぐ光学部材と、を備える。 In order to solve the above-described problems, a lighting fixture according to the present invention has a bottomed cylindrical fixture body, a light source unit disposed at the bottom of the fixture body, an entrance opening, and an exit aperture. And a reflecting member disposed in the instrument body, and an optical member that closes the exit opening of the reflecting member.

照明器具には、反射部材と光学部材とで囲まれる第一空間と、器具本体内と反射部材とで囲まれる第二空間とがあり、反射部材の入射開口部の開口縁部分と器具本体内の底部内面との間に、第一空間と第二空間とを連通させる間隙部が設けられる。反射部材の前記出射開口部の開口縁部分には、全周にわたって外方へ突出する鍔状部が設けられ、鍔状部に第一空間と第二空間とを連通させる複数の貫通孔が周方向に並べて配置されている。 The lighting fixture includes a first space surrounded by the reflecting member and the optical member, and a second space surrounded by the fixture main body and the reflecting member, and the opening edge portion of the incident opening of the reflecting member and the fixture main body. A gap portion is provided between the inner surface of the bottom portion and the first space and the second space. An opening edge portion of the exit opening of the reflecting member is provided with a hook-like portion that protrudes outward over the entire circumference, and a plurality of through holes that allow the first space and the second space to communicate with each other are provided in the hook-like portion. They are arranged side by side.

上記構成により、反射部材と光学部材との空間の温度上昇を抑制することができる。 With the above configuration, it is possible to suppress a temperature rise in the space between the reflecting member and the optical member.

図１は、実施の形態に係る照明器具１００の分解斜視図である。FIG. 1 is an exploded perspective view of a lighting apparatus 100 according to an embodiment. 図２は、実施の形態に係る反射部材４と光学部材５との分解斜視図である。FIG. 2 is an exploded perspective view of the reflecting member 4 and the optical member 5 according to the embodiment. 図３は、実施の形態に係る照明器具１００の断面図である。FIG. 3 is a cross-sectional view of the lighting fixture 100 according to the embodiment. 図４は、実施の形態に係る照明器具１００の断面の要部拡大図である。FIG. 4 is an enlarged view of a main part of a cross section of the luminaire 100 according to the embodiment. 図５は、実施の形態に係る反射部材４と光学部材５との接続部分における断面斜視図である。FIG. 5 is a cross-sectional perspective view of a connecting portion between the reflecting member 4 and the optical member 5 according to the embodiment.

以下、本発明の実施の形態について、図面を参照しながら説明する。なお、以下に説明する実施の形態は、いずれも本発明の好ましい一具体例を示すものである。したがって、以下の実施の形態で示される、数値、形状、材料、構成要素、構成要素の配置位置及び接続形態などは、一例であって本発明を限定する主旨ではない。よって、以下の実施の形態における構成要素のうち、本発明の最上位概念を示す独立請求項に記載されていない構成要素については、任意の構成要素として説明される。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that each of the embodiments described below shows a preferred specific example of the present invention. Therefore, the numerical values, shapes, materials, components, component arrangement positions, connection forms, and the like shown in the following embodiments are merely examples, and are not intended to limit the present invention. Therefore, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims showing the highest concept of the present invention are described as optional constituent elements.

なお、各図は、模式図であり、必ずしも厳密に図示されたものではない。また、各図において、実質的に同一の構成に対しては同一の符号を付しており、重複する説明は省略又は簡略化する。 Each figure is a schematic diagram and is not necessarily illustrated strictly. Moreover, in each figure, the same code | symbol is attached | subjected to the substantially same structure, The overlapping description is abbreviate | omitted or simplified.

（実施の形態）
［１．構成］
まず、実施の形態に係る照明器具１００の構成について、図１及び図２を参照して説明する。 (Embodiment)
[1. Constitution]
First, the structure of the lighting fixture 100 which concerns on embodiment is demonstrated with reference to FIG.1 and FIG.2.

図１は、本実施の形態に係る照明器具１００の分解斜視図である。 FIG. 1 is an exploded perspective view of a lighting fixture 100 according to the present embodiment.

図２は、本実施の形態に係る反射部材４と光学部材５との分解斜視図である。 FIG. 2 is an exploded perspective view of the reflecting member 4 and the optical member 5 according to the present embodiment.

図１及び図２に示されるように、照明器具１００は、器具本体１、光源部２、接続部材３、反射部材４、光学部材５、枠体６を備える。ＸＹＺ方向は図１に示されるように定義する。光源部２から出射される光の光軸Ｊ方向は鉛直方向（図のＺ軸方向）である。以下、各構成要素について説明する。 As illustrated in FIGS. 1 and 2, the lighting fixture 100 includes a fixture main body 1, a light source unit 2, a connection member 3, a reflection member 4, an optical member 5, and a frame body 6. The XYZ directions are defined as shown in FIG. The optical axis J direction of the light emitted from the light source unit 2 is the vertical direction (Z-axis direction in the figure). Hereinafter, each component will be described.

［１−１．器具本体］
器具本体１は、光源部２と反射部材４とを内部で支持する部材である。本実施形態では、器具本体１は、光源部２と反射部材４とを取り付ける取付台である。器具本体１は、筒状部１１、光源支持部１２及び複数のフィン１３を備える。 [1-1. Instrument body]
The instrument body 1 is a member that supports the light source unit 2 and the reflecting member 4 inside. In the present embodiment, the instrument body 1 is a mounting base to which the light source unit 2 and the reflecting member 4 are attached. The instrument main body 1 includes a cylindrical portion 11, a light source support portion 12, and a plurality of fins 13.

筒状部１１は、器具本体１の内部に設けられ、Ｚ軸方向側に開口する有底筒状の部分である。筒状部１１の内部において、光源部２と反射部材４とを囲むように支持する。また、筒状部１１のＺ軸方向側には、枠体６が取り付けられる。枠体６は、例えば、器具本体１にねじを用いて締結される。枠体６のＺ軸方向負側の端部には、これに対応したねじ穴が設けられ、ねじ穴にねじがねじ込まれることによって、器具本体１と枠体６が締結される。 The cylindrical portion 11 is a bottomed cylindrical portion that is provided inside the instrument body 1 and opens to the Z-axis direction side. In the inside of the cylindrical part 11, it supports so that the light source part 2 and the reflection member 4 may be enclosed. A frame body 6 is attached to the cylindrical portion 11 on the Z-axis direction side. The frame body 6 is fastened to the instrument body 1 using screws, for example. A screw hole corresponding to this is provided at the end on the negative side in the Z-axis direction of the frame body 6, and the instrument body 1 and the frame body 6 are fastened by screwing the screw into the screw hole.

光源支持部１２は、光源部２を支持する筒状部１１の底部に設けられる部分である。 The light source support part 12 is a part provided at the bottom of the cylindrical part 11 that supports the light source part 2.

フィン１３は、光源部２の点灯によって発生した熱を放熱させる部分である。フィン１３は器具本体１の外壁に設けられ、Ｚ軸方向負側に複数形成される。 The fin 13 is a part that dissipates heat generated by lighting the light source unit 2. A plurality of fins 13 are provided on the outer wall of the instrument body 1, and a plurality of fins 13 are formed on the negative side in the Z-axis direction.

器具本体１は、金属材料を用いて形成される。例えば、器具本体１はアルミダイカスト工程を経て形成されることが好ましい。 The instrument body 1 is formed using a metal material. For example, the instrument body 1 is preferably formed through an aluminum die casting process.

［１−２．光源部］
光源部２は、発光素子を有する発光モジュールであって、発光素子は所定の光を放射状
に出射する、例えばＬＥＤ（ＬｉｇｈｔＥｍｉｔｔｉｎｇＤｅｖｉｃｅ）である。光源部２は、ＣＯＢ（ＣｈｉｐＯｎＢｏａｒｄ）型ＬＥＤで構成され、基台２１と、発光部２２とを有する。発光部２２は、基台２１上に実装されたベアチップ（ＬＥＤチップ）である複数のＬＥＤチップと、それらＬＥＤチップを封止する封止部材とを有する。なお、本実施の形態では、封止部材は全てのＬＥＤチップを一括封止しているが、封止部材の構成はこれに限られない。例えば、ライン状に配列されたＬＥＤチップの配列方向に沿って複数本の封止部材がライン状に配置されていてもよい。 [1-2. Light source section]
The light source unit 2 is a light emitting module having a light emitting element, and the light emitting element is, for example, an LED (Light Emitting Device) that emits predetermined light radially. The light source unit 2 is configured by a COB (Chip On Board) type LED, and includes a base 21 and a light emitting unit 22. The light emitting unit 22 includes a plurality of LED chips that are bare chips (LED chips) mounted on the base 21, and a sealing member that seals the LED chips. In the present embodiment, the sealing member collectively seals all LED chips, but the configuration of the sealing member is not limited to this. For example, a plurality of sealing members may be arranged in a line along the arrangement direction of the LED chips arranged in a line.

光源部２は器具本体取付部２３によって、器具本体１の光源支持部１２に取り付けられる。図１に示される光源部２から発せられる光は、光軸Ｊ方向（図１のＺ軸方向）に照射される。器具本体取付部２３は、例えば、矩形形状の規制部２３１と、光源部２と反射部材４とを係止するための第一の係止部２３２と有する。規制部２３１は、光源部２のＸ軸及びＹ軸方向の位置を規制する。規制部２３１は中央に開口部２３３が形成されている。開口部２３３は、基台２１に対応する形状を有する。開口部２３３には、基台２１と発光部２２とが配置される。器具本体取付部２３は、器具本体１の光源支持部１２に配置され、接続部材３及びねじによって器具本体１に固定される。例えば、規制部２３１にはねじ貫通孔が設けられており、ねじ貫通孔にねじが挿入されることによって、器具本体取付部２３が光源部２を保持して、器具本体１に取り付けられる。 The light source part 2 is attached to the light source support part 12 of the instrument body 1 by the instrument body attachment part 23. The light emitted from the light source unit 2 shown in FIG. 1 is irradiated in the optical axis J direction (Z-axis direction in FIG. 1). The instrument main body attachment portion 23 includes, for example, a rectangular restriction portion 231 and a first locking portion 232 for locking the light source portion 2 and the reflecting member 4. The restricting unit 231 restricts the position of the light source unit 2 in the X-axis and Y-axis directions. The restricting portion 231 has an opening 233 at the center. The opening 233 has a shape corresponding to the base 21. The base 21 and the light emitting unit 22 are disposed in the opening 233. The instrument main body attaching part 23 is disposed on the light source support part 12 of the instrument main body 1 and is fixed to the instrument main body 1 by the connecting member 3 and a screw. For example, the restricting portion 231 is provided with a screw through hole, and the instrument main body attaching portion 23 holds the light source unit 2 and is attached to the instrument main body 1 by inserting a screw into the screw through hole.

基台２１は、複数のＬＥＤチップを実装するための実装基板であって、例えばセラミックス基板、樹脂基板又は絶縁被覆されたメタルベース基板などである。また、基台２１は、例えば平面視において矩形形状の平面を有する板状部材である。基台２１の底面が器具本体１に向けられて固定される。なお、基台２１には、ＬＥＤチップを発光させるため、直流電力を電源部４から受電するための一対の電極端子２４（正電極端子及び負電極端子）が設けられている。 The base 21 is a mounting substrate for mounting a plurality of LED chips, and is, for example, a ceramic substrate, a resin substrate, an insulating-coated metal base substrate, or the like. The base 21 is a plate-like member having a rectangular plane in plan view, for example. The bottom surface of the base 21 is fixed to the instrument body 1. The base 21 is provided with a pair of electrode terminals 24 (a positive electrode terminal and a negative electrode terminal) for receiving DC power from the power supply unit 4 in order to cause the LED chip to emit light.

［１−３．接続部材］
接続部材３は、光源部２へ電流を供給する配線（図示せず）が接続される部材である。本実施の形態では、二つの接続部材３を備え、一方の接続部材３に高電位側の配線が、他方の接続部材３に低電位側の配線が、それぞれ接続される。接続部材３には、光源部２へ電流を供給する電極（不図示）が設けられている。電極は、光源部２に設けられた一対の電極端子２４に接続される。 [1-3. Connection member]
The connection member 3 is a member to which a wiring (not shown) that supplies current to the light source unit 2 is connected. In the present embodiment, two connection members 3 are provided, and one connection member 3 is connected to a high potential side wiring, and the other connection member 3 is connected to a low potential side wiring. The connection member 3 is provided with electrodes (not shown) that supply current to the light source unit 2. The electrodes are connected to a pair of electrode terminals 24 provided in the light source unit 2.

なお、接続部材３は、光源部２の位置を規制する。接続部材３には、例えば、貫通孔が形成されており、貫通孔にねじが挿入されることによって、接続部材３が光源部２の器具本体取付部２３を介して器具本体１に取り付けられる。図１に示されるように、接続部材３によって、光源部２が器具本体１に取り付けられることにより、光源部２の光軸Ｊ軸方向（Ｚ軸方向）における位置を規制する。すなわち、接続部材３により、光源部２が光源支持部１２に向けて押圧されている。 The connecting member 3 regulates the position of the light source unit 2. For example, a through hole is formed in the connection member 3, and the connection member 3 is attached to the instrument body 1 via the instrument body attachment portion 23 of the light source unit 2 by inserting a screw into the through hole. As shown in FIG. 1, the connection member 3 attaches the light source unit 2 to the instrument main body 1, thereby restricting the position of the light source unit 2 in the optical axis J-axis direction (Z-axis direction). That is, the light source 2 is pressed toward the light source support 12 by the connecting member 3.

接続部材３は、例えば、ＰＢＴ、ポリカーボネートなどの樹脂材料を用いて形成される。また、接続部材３の電極は、銅などの導電性部材を用いて形成される。 The connection member 3 is formed using resin materials, such as PBT and a polycarbonate, for example. The electrode of the connection member 3 is formed using a conductive member such as copper.

［１−４．反射部材］
図２に示されるように、反射部材４は、光源部２からの光を光学部材５に向けて反射させる部材である。反射部材４は、入射開口部４１と出射開口部４２とで両端に開口した筒状の形状を有し、器具本体１内に配置される。反射部材４は、中央部４３、立設部４４及び鍔状部４５とから構成される。 [1-4. Reflective member]
As shown in FIG. 2, the reflecting member 4 is a member that reflects light from the light source unit 2 toward the optical member 5. The reflecting member 4 has a cylindrical shape opened at both ends by the incident opening 41 and the emission opening 42, and is disposed in the instrument main body 1. The reflecting member 4 includes a central portion 43, a standing portion 44, and a hook-like portion 45.

中央部４３は、入射開口部４１と出射開口部４２とが設けられ、内径及び外径が入射開
口部４１から出射開口部４２に向けて次第に大きくなるように構成された筒状の形状を有する。反射部材４は、入射開口部４１の内径が光源部２が取り囲むようにして、器具本体取付部２３と取り付けられる。
光源部２から放射された光は入射開口部４１から入射し、中央部４３の内壁面において反射され、出射開口部４２から出射される。 The central portion 43 is provided with an entrance opening 41 and an exit opening 42, and has a cylindrical shape configured such that an inner diameter and an outer diameter gradually increase from the entrance opening 41 toward the exit opening 42. . The reflecting member 4 is attached to the instrument main body attaching portion 23 such that the inner diameter of the incident opening 41 surrounds the light source portion 2.
The light emitted from the light source unit 2 enters from the incident opening 41, is reflected by the inner wall surface of the central portion 43, and is emitted from the emission opening 42.

鍔状部４５は、出射開口部４２の開口縁部分４５６に全周にわたって外方へ突出する環状形状を有する部材である。鍔状部４５には、出射開口部４２の開口縁部分寄りに、周方向において、円環状に複数の貫通孔４５１が並べて配置される。 The hook-shaped portion 45 is a member having an annular shape that protrudes outward over the entire circumference of the opening edge portion 456 of the emission opening portion 42. A plurality of through holes 451 are arranged in a ring shape in the circumferential direction in the flange 45 near the opening edge portion of the emission opening 42.

また、出射開口部４２の開口縁部分４５６は、図２に示されるように、鍔状部４５の底面４５２より、光の出射するＪ軸方向（Ｚ軸方向）に突出した形状であることが望ましい。これにより、出射開口部４２から出射した光が複数の貫通孔４５１から漏れることを防ぐことができる。 Further, as shown in FIG. 2, the opening edge portion 456 of the emission opening 42 has a shape protruding in the J-axis direction (Z-axis direction) from which light is emitted from the bottom surface 452 of the flange 45. desirable. Thereby, it is possible to prevent light emitted from the emission opening 42 from leaking from the plurality of through holes 451.

また、鍔状部４５は、外周縁はＺ軸方向に突出した枠形状の規制枠４５４を有する。 The flange 45 has a frame-shaped restriction frame 454 that protrudes in the Z-axis direction at the outer periphery.

立設部４４は、鍔状部４５の光源部２側に配置され、Ｚ軸方向の反対方向に立設されている。立設部４４には、器具本体取付部２３に設けられた第一の係止部２３２に対応する被係止貫通孔４４１が設けられている。器具本体取付部２３に設けられた第一の係止部２３２が被係止貫通孔４４１に接続されることで、反射部材４が器具本体取付部２３を介して器具本体１に取り付けられる。また、反射部材４は、入射開口部４１の内部で光源部２を取り囲むようにして、器具本体取付部２３に取り付けられる。 The standing portion 44 is disposed on the light source portion 2 side of the bowl-shaped portion 45 and is erected in the direction opposite to the Z-axis direction. The standing portion 44 is provided with a locked through-hole 441 corresponding to the first locking portion 232 provided in the instrument main body mounting portion 23. The reflective member 4 is attached to the instrument body 1 via the instrument body attachment part 23 by connecting the first locking part 232 provided in the instrument body attachment part 23 to the locked through-hole 441. Further, the reflection member 4 is attached to the instrument body attachment portion 23 so as to surround the light source portion 2 inside the incident opening 41.

反射部材４は、例えばポリブチレンテレフタラート（ＰＢＴ）、ポリカーボネートなど、白色樹脂材料を用いて形成される。 The reflecting member 4 is formed using a white resin material such as polybutylene terephthalate (PBT) or polycarbonate.

［１−５．光学部材］
光学部材５は、光源部２から出射された光が入射される透過性の部材であって、図２に示されるように、配光制御部５１と環状部５２とを備える。 [1-5. Optical member]
The optical member 5 is a transmissive member to which light emitted from the light source unit 2 is incident, and includes a light distribution control unit 51 and an annular unit 52 as shown in FIG.

配光制御部５１は、光源部２側から入射した光の配光を制御し、出射する機能を有する。 The light distribution control unit 51 has a function of controlling and emitting light distribution of light incident from the light source unit 2 side.

本実施形態では、配光制御部５１において、光入射面（Ｚ軸方向負側）にはディンプル加工が施されている。光出射面（Ｚ軸方向側）には同心円状に配置された複数のプリズムからなるフレネルレンズが形成されている。これによって、出射する光を拡散させることができ、光の照度ムラ及び色ムラを抑制することができ、均一に被照射物を照らすことができる。 In the present embodiment, in the light distribution control unit 51, dimple processing is performed on the light incident surface (Z-axis direction negative side). A Fresnel lens composed of a plurality of concentrically arranged prisms is formed on the light exit surface (Z-axis direction side). As a result, the emitted light can be diffused, the illuminance unevenness and color unevenness of the light can be suppressed, and the irradiated object can be illuminated uniformly.

環状部５２は、光学部材５の光が入射する側の端部に円環状に配置され、光学部材５と反射部材４とを器具本体１に接続する部分である。環状部５２の内径は、鍔状部４５に配置される複数の貫通孔４５１によって形成される円の直径よりも大きい。 The annular portion 52 is a portion that is arranged in an annular shape at the end of the optical member 5 on the light incident side, and connects the optical member 5 and the reflecting member 4 to the instrument body 1. The inner diameter of the annular portion 52 is larger than the diameter of a circle formed by the plurality of through holes 451 disposed in the bowl-shaped portion 45.

また、環状部５２には、光学部材５と反射部材４とを接続する第二の被係止部５２１が設けられる。第二の被係止部５２１は、反射部材４に設けられた第二の係止部４５３に取り付けられることによって、反射部材４に係止される。光学部材５と反射部材４との係止構造については、後で詳述する。 The annular portion 52 is provided with a second locked portion 521 that connects the optical member 5 and the reflecting member 4. The second locked portion 521 is locked to the reflecting member 4 by being attached to the second locking portion 453 provided in the reflecting member 4. The locking structure between the optical member 5 and the reflecting member 4 will be described in detail later.

光学部材５は透過性材料を用いて形成されており、例えばフレネルレンズやＰＭＭＡ（
アクリル）、ポリカーブネートなどの透明樹脂素材、又は、ガラス材料などの透明材料を用いて形成されることが好ましい。 The optical member 5 is formed using a transmissive material, for example, Fresnel lens or PMMA (
Acrylic), a transparent resin material such as polycarbinate, or a transparent material such as a glass material is preferably used.

［１−６．枠体］
枠体６は、配光制御部５１から出射される光を反射させる両端に開口した筒形状の枠部材である。枠体６は、枠体本体部６１と補助反射部６２と取付部６３を備える。 [1-6. Frame]
The frame 6 is a cylindrical frame member that is open at both ends for reflecting light emitted from the light distribution control unit 51. The frame body 6 includes a frame body main body portion 61, an auxiliary reflection portion 62, and an attachment portion 63.

なお、枠体６は、図１及び３に示されるように、器具本体１のＺ軸方向側の端面と接している。 As shown in FIGS. 1 and 3, the frame 6 is in contact with the end surface of the instrument body 1 on the Z-axis direction side.

枠体本体部６１は筒状の部材であり、Ｚ軸方向負側の端部６１ａの内径は、配光制御部５１の外径よりも大きい。また、同じく端部６１ａの外径は、器具本体１の筒状部１１と同じ程度の外径を有する。枠体本体部６１のＺ軸方向負側の端部６１ａと器具本体１のＺ軸方向側の端部１ａとが、例えば、ねじ止めによって固定される。枠体本体部６１は、例えばアルミニウムなどの金属で形成される。 The frame body 61 is a cylindrical member, and the inner diameter of the end 61 a on the negative side in the Z-axis direction is larger than the outer diameter of the light distribution control unit 51. Similarly, the outer diameter of the end portion 61 a has the same outer diameter as that of the cylindrical portion 11 of the instrument body 1. The end 61a on the Z-axis direction negative side of the frame body 61 and the end 1a on the Z-axis direction of the instrument body 1 are fixed by, for example, screwing. The frame body 61 is made of a metal such as aluminum.

補助反射部６２は、枠体本体部６１の内周面に沿って形成される筒状の部材である。補助反射部６２の内周面は補助反射面を有し、光学部材５から入射される光の配光制御を行う機能を有する。補助反射部６２は、例えばアルミニウムなどの薄い金属板で形成されている。補助反射部６２はＺ軸方向負側の開口部を、枠体本体部６１におけるＺ軸方向負側の開口部にかしめることにより、枠体本体部６１に取り付けられる。また、補助反射部６２は、Ｚ軸方向負側の開口部が配光制御部５１を取り囲み、枠体本体部６１を介して器具本体１に取り付けられる。 The auxiliary reflection part 62 is a cylindrical member formed along the inner peripheral surface of the frame body part 61. The inner peripheral surface of the auxiliary reflecting portion 62 has an auxiliary reflecting surface and has a function of performing light distribution control of light incident from the optical member 5. The auxiliary reflecting portion 62 is formed of a thin metal plate such as aluminum. The auxiliary reflecting portion 62 is attached to the frame body main body 61 by caulking the Z-axis direction negative side opening to the Z-axis direction negative side opening of the frame body main body 61. Further, the auxiliary reflecting portion 62 is attached to the instrument main body 1 via the frame main body portion 61 with the opening on the negative side in the Z-axis surrounding the light distribution control portion 51.

取付部６３は、照明器具１００を天井などに取り付けるための弾性部材である。本実施の形態では、三つの取付部６３が枠体本体部６１の外周に設けられる。取付部６３は、例えば鉄などの金属で形成される。 The attachment part 63 is an elastic member for attaching the lighting fixture 100 to a ceiling or the like. In the present embodiment, three attachment portions 63 are provided on the outer periphery of the frame body portion 61. The attachment portion 63 is made of a metal such as iron.

［２．係止構成］
続いて、図１から図５を参照して、本実施形態に係る構成要素間の係止構成について説明する。
図３は、本実施の形態に係る照明器具１００の断面図である。
図４は、本実施の形態に係る照明器具１００の断面の要部拡大図である。
図５は、本実施の形態に係る反射部材４と光学部材５との接続部分における断面斜視図である。 [2. Locking configuration]
Subsequently, a locking configuration between the components according to the present embodiment will be described with reference to FIGS. 1 to 5.
FIG. 3 is a cross-sectional view of lighting apparatus 100 according to the present embodiment.
FIG. 4 is an enlarged view of a main part of a cross section of the lighting fixture 100 according to the present embodiment.
FIG. 5 is a cross-sectional perspective view of a connection portion between the reflecting member 4 and the optical member 5 according to the present embodiment.

［２−１．器具本体と反射部材の係止構成］
図１から図４を参照して、器具本体１と反射部材４の係止構成を説明する。 [2-1. Locking configuration of the instrument body and the reflective member]
With reference to FIG. 1 to FIG. 4, a locking configuration of the instrument main body 1 and the reflecting member 4 will be described.

図１、２に示されるように、器具本体１の底部１４には、光源部２が接続部材３を介して、器具本体１の光源支持部１２に取り付けられる。また、反射部材４は、光源部２に設けられた第一の係止部２３２によって、器具本体１と係止される。器具本体１と反射部材４の係止において、反射部材４の入射開口部４１は開口内部で基台２１を取り囲んで係止される。このとき、器具本体１の筒状部１１の底部１１ａと反射部材の入射開口部４１との端部４１ａの間に間隙部９が設けられて係止される。この構造により、器具本体１の筒状部１１の内部に、光源部２と反射部材４が支持される。 As shown in FIGS. 1 and 2, the light source part 2 is attached to the light source support part 12 of the instrument main body 1 via the connecting member 3 at the bottom 14 of the instrument main body 1. Further, the reflecting member 4 is locked to the instrument main body 1 by a first locking portion 232 provided in the light source unit 2. When the instrument body 1 and the reflecting member 4 are locked, the incident opening 41 of the reflecting member 4 is locked around the base 21 inside the opening. At this time, the gap portion 9 is provided and locked between the end portion 41a of the bottom portion 11a of the cylindrical portion 11 of the instrument main body 1 and the incident opening portion 41 of the reflecting member. With this structure, the light source unit 2 and the reflecting member 4 are supported inside the cylindrical portion 11 of the instrument body 1.

具体的には、光源部２に設けられた第一の係止部２３２が、反射部材４の立設部４４に設けられた係止貫通孔４４１に挿入され、支持される。その際、光源部２は反射部材４の入射開口部４１の径内に収められ、器具本体１の底部と反射部材４の入射開口部４１は間
隙部９が設けられて取り付けられる。また、筒状部１１の内部は、鍔状部４５の外径が収まる大きさであり、器具本体１と反射部材４が接続された際、器具本体１の筒状部１１の内壁と反射部材４の外壁とで囲まれる環状の第二空間８を有する。 Specifically, the first locking portion 232 provided in the light source unit 2 is inserted into and supported by the locking through hole 441 provided in the standing portion 44 of the reflecting member 4. At that time, the light source unit 2 is accommodated within the diameter of the incident opening 41 of the reflecting member 4, and the bottom of the instrument body 1 and the incident opening 41 of the reflecting member 4 are attached with a gap 9. Moreover, the inside of the cylindrical part 11 is a size in which the outer diameter of the bowl-shaped part 45 is accommodated, and when the instrument main body 1 and the reflective member 4 are connected, the inner wall and the reflective member of the cylindrical part 11 of the instrument main body 1 are connected. 4 has an annular second space 8 surrounded by four outer walls.

［２−２．反射部材と光学部材との間の係止構成］
反射部材４と光学部材５との係止構成について説明する。 [2-2. Locking configuration between reflecting member and optical member]
A locking configuration between the reflecting member 4 and the optical member 5 will be described.

本実施形態における反射部材４の鍔状部４５には、出射開口部４２の開口縁部分４５６の円形に沿って、周方向に１２個の円形状の貫通孔４５１が等間隔に設けられている。なお、貫通孔４５１の形状や個数は、これに限るものではない。 In the flange portion 45 of the reflecting member 4 in the present embodiment, twelve circular through holes 451 are provided at equal intervals in the circumferential direction along the circular shape of the opening edge portion 456 of the emission opening portion 42. . Note that the shape and number of the through holes 451 are not limited thereto.

図４及び図５に示されるように、光学部材５が有する環状部５２の内径はこの反射部材４に設けられた複数の貫通孔４５１によって形成される円の内径よりも大きく、環状部５２と反射部材４の鍔状部４５と接合される接続部分１０よりも内側に、環状部５２は複数の貫通孔４５１を取り囲んで接続される。 As shown in FIGS. 4 and 5, the inner diameter of the annular portion 52 included in the optical member 5 is larger than the inner diameter of a circle formed by the plurality of through holes 451 provided in the reflecting member 4. The annular portion 52 is connected so as to surround the plurality of through holes 451 on the inner side of the connection portion 10 joined to the flange portion 45 of the reflecting member 4.

鍔状部４５の外周縁はＺ軸方向に突出した規制枠４５４を有する。規制枠４５４は、光学部材５の環状部５２の外周縁に沿った形状のＹ軸方向負側に突出した枠部である。 The outer peripheral edge of the bowl-shaped portion 45 has a regulation frame 454 protruding in the Z-axis direction. The restriction frame 454 is a frame portion that protrudes to the Y axis direction negative side in a shape along the outer peripheral edge of the annular portion 52 of the optical member 5.

光学部材５は、環状部５２において、反射部材４の鍔状部４５に取り付けられている。環状部５２の外周縁は、規制枠４５４に沿って周方向にわたって囲まれている。すなわち、光学部材５の外周縁形状も鍔状部４５の規制枠４５４と同様の形状を有する。 The optical member 5 is attached to the flange 45 of the reflecting member 4 at the annular portion 52. The outer peripheral edge of the annular portion 52 is surrounded along the regulation frame 454 in the circumferential direction. That is, the outer peripheral edge shape of the optical member 5 also has the same shape as the restriction frame 454 of the bowl-shaped portion 45.

規制枠４５４は、例えば光学部材５を係止するための第二の係止部４５３を有する（図２参照）。光学部材５の環状部５２の外径には、第二の係止部４５３に対応した第二の被係止部５２１が設けられている。第二の係止部４５３と第二の被係止部５２１とが接続されることにより、反射部材４の鍔状部４５のＺ軸方向側の面と光学部材５の環状部５２のＺ軸方向負側の面とが接した状態で係止される。光学部材５は、ねじなどの締結部材を用いずに反射部材４に係止される。 The restriction frame 454 includes, for example, a second locking portion 453 for locking the optical member 5 (see FIG. 2). A second locked portion 521 corresponding to the second locking portion 453 is provided on the outer diameter of the annular portion 52 of the optical member 5. By connecting the second locking portion 453 and the second locked portion 521, the surface on the Z-axis direction side of the flange-shaped portion 45 of the reflecting member 4 and the Z-axis of the annular portion 52 of the optical member 5 are connected. The surface is locked in contact with the negative surface. The optical member 5 is locked to the reflecting member 4 without using a fastening member such as a screw.

図５に示されるように、光学部材５の環状部５２の内周縁形状は、反射部材４の出射開口部４２の周縁に設けられた複数の貫通孔４５１によって形成される円周の内径よりも大きい。すなわち、固定した反射部材４と光学部材５をＺ軸方向側から見た際、反射部材４に設けられた複数の貫通孔４５１は、光学部材５の環状部５２の内径よりも内側に収まる。 As shown in FIG. 5, the inner peripheral edge shape of the annular portion 52 of the optical member 5 is larger than the inner diameter of the circumference formed by the plurality of through holes 451 provided at the peripheral edge of the emission opening 42 of the reflecting member 4. large. That is, when the fixed reflecting member 4 and the optical member 5 are viewed from the Z-axis direction side, the plurality of through holes 451 provided in the reflecting member 4 are accommodated inside the inner diameter of the annular portion 52 of the optical member 5.

例えば、本実施形態において、出射開口部４２の内径は６ｃｍ、環状部５２の内径は６．５ｃｍ、貫通孔４５１の直径は０．２ｃｍである。このとき、貫通孔４５１によって形成される円周の内径は６．１ｃｍであることが好ましく、それぞれの内径の中心は全て同一点であることが好ましい。 For example, in this embodiment, the inner diameter of the emission opening 42 is 6 cm, the inner diameter of the annular portion 52 is 6.5 cm, and the diameter of the through hole 451 is 0.2 cm. At this time, the inner diameter of the circumference formed by the through hole 451 is preferably 6.1 cm, and the centers of the inner diameters are preferably all the same.

光学部材５の配光制御部５１は、出射開口部４２と空隙を介して反射部材４と係止される。そのため、照明器具１００は、反射部材４の中央部４３の内壁と光学部材５の配光制御部５１のＺ軸方向負側とで囲まれる第一空間７を有する。なお、出射開口部４２と環状部５２とがズレなく正確に貫通孔４５１を取り囲んで係止されるように、反射部材４の鍔状部４５に位置決め部４５５を有することが好ましい。また、位置決め部４５５の形状に対応して、光学部材５の環状部５２は位置取り部５２２を有することが好ましい。 The light distribution control unit 51 of the optical member 5 is locked to the reflection member 4 through the emission opening 42 and the gap. Therefore, the lighting fixture 100 has the first space 7 surrounded by the inner wall of the central portion 43 of the reflecting member 4 and the Z-axis direction negative side of the light distribution control unit 51 of the optical member 5. In addition, it is preferable to have the positioning part 455 in the flange-like part 45 of the reflecting member 4 so that the emission opening part 42 and the annular part 52 can be accurately surrounded and locked with the through hole 451. Further, the annular portion 52 of the optical member 5 preferably has a positioning portion 522 corresponding to the shape of the positioning portion 455.

この係止構造によって、器具本体１に反射部材４と光学部材５を取り付けた際、反射部材４の内壁に囲まれた第一空間７中の空気が、間隙部９を通って、反射部材４の外壁にあ
る第二空間８に流出する。また、第二空間８中の空気は、反射部材４の鍔状部４５に設けられた複数の貫通孔４５１を通って、再び第一空間７に流入することができるので、第一空間７中の空気と第二空間８中の空気とを循環させることができる。 Due to this locking structure, when the reflecting member 4 and the optical member 5 are attached to the instrument main body 1, the air in the first space 7 surrounded by the inner wall of the reflecting member 4 passes through the gap portion 9 and passes through the reflecting member 4. Flows out into the second space 8 on the outer wall. In addition, the air in the second space 8 can flow into the first space 7 again through the plurality of through holes 451 provided in the flange 45 of the reflecting member 4. And the air in the second space 8 can be circulated.

照明装置１００は、光軸Ｊを下に向けて使用される場合が多い。そうすると、間隙部９は、複数の貫通孔４５１よりも上方向に位置する。照明器具１００の点灯時、光源部２から発せられる熱によって、光源部２の周辺部の空気を暖められ、第一空間７内に閉じ込められる。その暖められた空気は、対流により器具本体１と反射部材４との間に設けられた間隙部９を通じて第一空間７から第二空間８へ流出する（Ｆ１）。そして、第二空間８から複数の貫通孔４５１を通じて再び、第一空間７へ流入する（Ｆ２）。この熱循環過程において、外面が外気に露出している器具本体１によって、すなわち第一空間７において暖められた空気の温度は下げられる。このような空気循環によって光源部２の熱を適切に下げることができつつ、反射部材４および光学部材５の循環空気に触れるので、適度に温度を下げることができる。 The illumination device 100 is often used with the optical axis J facing downward. As a result, the gap 9 is positioned above the plurality of through holes 451. When the lighting fixture 100 is turned on, the air around the light source unit 2 is warmed by the heat generated from the light source unit 2 and is trapped in the first space 7. The warmed air flows out from the first space 7 to the second space 8 through a gap 9 provided between the instrument body 1 and the reflecting member 4 by convection (F1). And it flows into the 1st space 7 again through the several through-hole 451 from the 2nd space 8 (F2). In this thermal circulation process, the temperature of the air warmed in the first space 7 is lowered by the instrument body 1 whose outer surface is exposed to the outside air. While the heat of the light source unit 2 can be appropriately lowered by such air circulation, the temperature of the light can be lowered appropriately because the circulating air of the reflecting member 4 and the optical member 5 is touched.

その結果、反射部材４及び光学部材５が過度な温度上昇によって熱劣化するのを防止することができる。 As a result, it is possible to prevent the reflective member 4 and the optical member 5 from being thermally deteriorated due to an excessive temperature rise.

また、器具本体１、反射部材４及び光学部材５が密接して配置される場合において、照明器具１００の内部空間のみで冷却可能であるので、照明器具１００内部の防虫や防水効果も期待される。 Further, in the case where the fixture main body 1, the reflecting member 4 and the optical member 5 are closely arranged, cooling is possible only in the interior space of the lighting fixture 100, so that an insectproof and waterproofing effect inside the lighting fixture 100 is also expected. .

また、反射部材４の外縁が入射開口部４１より外側に位置することにより、Ｙ軸方向負側から照明器具１００を見た場合に、入射開口部４１の内側には、反射部材４、光学部材５及び光源部２だけが見える。つまり、照明器具１００の内部の配線などが、照明器具１００の外部から見られることを抑制することができる。これにより、ユーザらが、照明器具１００の内部の配線などに触れることを抑制できる。また、照明器具１００の内部が見えない構成は、外観デザイン上も好ましい。 In addition, since the outer edge of the reflecting member 4 is located outside the incident opening 41, the reflecting member 4 and the optical member are disposed inside the incident opening 41 when the luminaire 100 is viewed from the Y axis direction negative side. Only 5 and the light source unit 2 are visible. That is, it can suppress that the wiring etc. of the inside of the lighting fixture 100 are seen from the exterior of the lighting fixture 100. FIG. Thereby, it can suppress that users touch the wiring etc. inside the lighting fixture 100. FIG. In addition, a configuration in which the inside of the lighting fixture 100 is not visible is also preferable in terms of appearance design.

［４．効果など］
以上、本実施の形態は、有底筒状の器具本体１と、器具本体１内の底部に配置される光源部２と、入射開口部４１と出射開口部４２とで両端に開口した筒状の部材であって、器具本体１内に配置される反射部材４と、反射部材４の出射開口部４２を塞ぐ光学部材３と、を備える照明器具１００であって、照明器具１００には、反射部材４の内側壁と光学部材５とで囲まれる第一空間７と、器具本体１００の内壁と反射部材４の外側壁とで囲まれる第二空間８とがあり、反射部材４の入射開口部４１の開口縁部分と器具本体１内の底部内面との間に、第一空間７と第二空間８とを連通させる間隙部９が設けられ、反射部材４の出射開口部４２の開口縁部分４５６には、全周にわたって外方へ突出する鍔状部４５が設けられ、鍔状部４５に第一空間７と第二空間８とを連通させる複数の貫通孔４５１が周方向に並べて配置されている。 [4. Effect etc.]
As described above, in the present embodiment, the bottomed cylindrical instrument body 1, the light source unit 2 disposed at the bottom of the instrument body 1, the incident opening 41, and the emission opening 42 are open at both ends. It is the lighting fixture 100 provided with the reflection member 4 arrange | positioned in the fixture main body 1, and the optical member 3 which block | closes the output opening part 42 of the reflection member 4, Comprising: There is a first space 7 surrounded by the inner wall of the member 4 and the optical member 5, and a second space 8 surrounded by the inner wall of the instrument body 100 and the outer wall of the reflecting member 4. Between the opening edge part of 41 and the bottom part inner surface in the instrument main body 1, a gap part 9 for communicating the first space 7 and the second space 8 is provided, and the opening edge part of the emission opening part 42 of the reflecting member 4 456 is provided with a hook-like portion 45 that protrudes outward over the entire circumference. 7 a plurality of through holes 451 for communicating the second space 8 is arranged in the circumferential direction.

これにより、照明器具１００内の空気が間隙部９及び複数の貫通孔４５１を通じて第一空間７と第二空間８とを循環することができるので、空気循環により、反射部材４及び光学部材５の空間の温度上昇を抑制することができる。 Thereby, since the air in the luminaire 100 can circulate through the first space 7 and the second space 8 through the gap 9 and the plurality of through holes 451, the reflection member 4 and the optical member 5 can be circulated by air circulation. An increase in the temperature of the space can be suppressed.

また、光学部材５は、出射開口部４２から出射される光を配光制御して透過させる配光制御部５１と、配光制御部５１の周囲に環状部５２と、を有し、環状部５２と反射部材４の鍔状部４５とが接合される、接合部分よりも内側における鍔状部４５に貫通孔４５１が配置されていることが好ましい。 The optical member 5 includes a light distribution control unit 51 that controls and transmits light emitted from the emission opening 42, and an annular portion 52 around the light distribution control unit 51. It is preferable that the through-hole 451 is disposed in the hook-shaped portion 45 on the inner side of the bonding portion where the pin 52 and the hook-shaped portion 45 of the reflecting member 4 are bonded.

これにより、器具本体１、反射部材４及び光学部材５が密閉構造で設けられている場合においても、照明器具１００内で空気の循環が行えることにより、内部空間の温度上昇を抑制できる。さらに、密閉構造であることより照明器具１００内部の防虫・防水を行うこともできる。 Thereby, even when the instrument main body 1, the reflecting member 4, and the optical member 5 are provided in a sealed structure, the temperature increase in the internal space can be suppressed by allowing the air to circulate within the lighting instrument 100. Furthermore, since it has a hermetically sealed structure, the inside of the lighting fixture 100 can be protected against insects and water.

また、光学部材５はフレネルレンズであることが好ましい。 The optical member 5 is preferably a Fresnel lens.

また、両端に開口した筒状の枠体６であって、一方の開口端が器具本体１の底部とは反対側の開口部の開口縁部分に固定される補助反射部６２を、さらに備えることが好ましい。 Moreover, it is the cylindrical frame 6 opened at both ends, Comprising: The auxiliary reflection part 62 by which one opening end is fixed to the opening edge part of the opening part on the opposite side to the bottom part of the instrument main body 1 is further provided. Is preferred.

これにより、出射する光を拡散させることができ、光の照度ムラ及び色ムラを抑制することができ、均一に被照射物を照らすことができる。 Thereby, the emitted light can be diffused, the illuminance unevenness and the color unevenness of the light can be suppressed, and the irradiated object can be illuminated uniformly.

上記構成により、反射部材４及び光学部材５の間に第一空間７が、器具本体１の内部及び反射部材４の外側壁の間に環状の第二空間８が形成される。器具本体１内で暖められた空気が、第一空間７及び第二空間８を、間隙部９や複数の貫通孔４５１を通じて循環することができる。器具本体１内で暖められた空気は、この循環が行われることによって、反射部材４及び光学部材５の温度上昇が抑制され、熱劣化するのを防ぐことができる。また、熱循環により、温度上昇を抑制する際、器具本体１に設けられたフィン１３が動作することによって、さらに循環を円滑にし、より温度を抑制されることが好ましい。 With the above configuration, the first space 7 is formed between the reflecting member 4 and the optical member 5, and the annular second space 8 is formed between the inside of the instrument body 1 and the outer wall of the reflecting member 4. The air heated in the instrument body 1 can circulate through the first space 7 and the second space 8 through the gap 9 and the plurality of through holes 451. The air heated in the instrument main body 1 can be prevented from thermal degradation by suppressing the temperature rise of the reflecting member 4 and the optical member 5 by this circulation. Moreover, when suppressing a temperature rise by thermal circulation, it is preferable that the fin 13 provided in the instrument main body 1 operates to further smooth the circulation and further suppress the temperature.

また、器具本体１と反射部材４と光学部材５とによる密閉された空間の内部で冷却できるので、反射部材４と光学部材５の内部の防虫・防水も行うことができる。 In addition, since cooling can be performed in a sealed space formed by the instrument main body 1, the reflecting member 4, and the optical member 5, insectproofing and waterproofing inside the reflecting member 4 and the optical member 5 can be performed.

（変形例など）
以上、本発明に係る照明器具１００について、実施の形態に基づいて説明したが、本発明は、これらの実施の形態に限定されるものではない。 (Variations, etc.)
As mentioned above, although the lighting fixture 100 which concerns on this invention was demonstrated based on embodiment, this invention is not limited to these embodiment.

例えば、上記実施形態では、光学部材５は、フレネルレンズを用いて説明したが、光学部材５はこれに限定されない。光学部材５は、例えば、ハイブリッドレンズ、ドーム型レンズ、平板（配光制御をしないカバー）などでもよい。 For example, in the above embodiment, the optical member 5 has been described using a Fresnel lens, but the optical member 5 is not limited to this. The optical member 5 may be, for example, a hybrid lens, a dome lens, a flat plate (a cover that does not perform light distribution control), or the like.

また、出射開口部４２、環状部５２及び複数の貫通孔４５１によって形成される円周の内径の大きさは実施の形態に限るものではない。 The size of the inner diameter of the circumference formed by the emission opening 42, the annular portion 52, and the plurality of through holes 451 is not limited to the embodiment.

また、反射部材４の鍔状部４５に設けられた複数の貫通孔４５１の形状や配置される個数は、上記実施形態では円形に１２個配置されるものであったが、形状や個数はこれに限定されるものではない。 In addition, the shape and the number of the plurality of through holes 451 provided in the bowl-shaped portion 45 of the reflecting member 4 are 12 in the above embodiment, but the shape and the number are not limited to this. It is not limited to.

また、上記実施の形態においては、光源部２において、ＣＯＢ型ＬＥＤを用いたが、他の発光素子を用いてもよい。例えば、ＳＭＤ（ＳｕｒｆａｃｅＭｏｕｎｔＤｅｖｉｃｅ）型ＬＥＤを用いてもよい。また、有機ＥＬ（ＥｌｅｃｔｒｏＬｕｍｉｎｅｓｃｅｎｃｅ）素子など他の固体発光素子、又は、固体発光素子以外の他の光源を用いてもよい。 Moreover, in the said embodiment, although COB type LED was used in the light source part 2, you may use another light emitting element. For example, an SMD (Surface Mount Device) type LED may be used. Moreover, you may use other solid light emitting elements, such as an organic EL (Electro Luminescence) element, or other light sources other than a solid light emitting element.

また、反射部材４の出射開口部４２は、入射開口部４１から入射した光を反射したものを出射開口部４２へ導くとしたが、光学部材５で跳ね返った光を反射させ再度出射開口部４２へ導いてもよい。 In addition, although the output opening 42 of the reflecting member 4 guides the light reflected from the incident opening 41 to the output opening 42, the light bounced off by the optical member 5 is reflected and the output opening 42 again. You may lead to.

その他、各実施の形態に対して当業者が思いつく各種変形を施して得られる形態、又は
、本発明の趣旨を逸脱しない範囲で各実施の形態における構成要素及び機能を任意に組み合わせることで実現される形態も本発明に含まれる。 In addition, the present invention can be realized by various combinations conceived by those skilled in the art for each embodiment, or by arbitrarily combining the components and functions in each embodiment without departing from the spirit of the present invention. This form is also included in the present invention.

１００照明器具
１器具本体
１４底部
２光源部
４反射部材
４１入射開口部
４２出射開口部
４５鍔状部
４５１貫通孔
５光学部材
５１配光制御部
５２環状部
６２補助反射部
７第一空間
８第二空間
９間隙部
１０接続部分
DESCRIPTION OF SYMBOLS 100 Lighting fixture 1 Appliance main body 14 Bottom part 2 Light source part 4 Reflective member 41 Incidence opening part 42 Outgoing opening part 45 Gutter-like part 451 Through-hole 5 Optical member 51 Light distribution control part 52 Annular part 62 Auxiliary reflection part 7 1st space 8 1st Two spaces 9 Gap 10 Connection part

Claims

A bottomed tubular instrument body,
A light source disposed at the bottom of the instrument body;
A cylindrical member opened at both ends at the entrance opening and the exit opening, the reflecting member disposed in the instrument body; and
An optical member that closes the exit opening of the reflecting member,
In the lighting fixture,
A first space surrounded by the inner wall of the reflecting member and the optical member;
There is a second space surrounded by the inner wall of the instrument body and the outer wall of the reflecting member,
Between the opening edge portion of the incident opening of the reflecting member and the inner surface of the bottom of the instrument body, a gap is provided for communicating the first space and the second space.
An opening edge portion of the output opening portion of the reflecting member is provided with a flange-like portion protruding outward over the entire circumference, and a plurality of the first space and the second space are communicated with the flange-like portion. The lighting apparatus, wherein the through holes are arranged side by side in the circumferential direction.

The optical member has a light distribution control unit that controls and transmits light emitted from the emission opening, and an annular portion around the light distribution control unit,
The lighting apparatus according to claim 1, wherein the through-hole is disposed in the hook-like portion inside the joint portion where the annular portion and the hook-like portion of the reflecting member are joined.

The lighting fixture according to claim 2, wherein the light distribution control unit is a Fresnel lens.

A cylindrical frame member that is open at both ends, further comprising an auxiliary reflecting portion in which one open end is fixed to an opening edge portion of the opening opposite to the bottom portion of the instrument body. The lighting fixture as described in any one of.