JP2013045604A - Lighting fixture - Google Patents

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JP2013045604A
JP2013045604A JP2011182150A JP2011182150A JP2013045604A JP 2013045604 A JP2013045604 A JP 2013045604A JP 2011182150 A JP2011182150 A JP 2011182150A JP 2011182150 A JP2011182150 A JP 2011182150A JP 2013045604 A JP2013045604 A JP 2013045604A
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light
lighting fixture
connecting portion
light distribution
leds
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JP5857261B2 (en
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Hiroyuki Sekii
広行 関井
Kyohei Nakamura
恭平 中村
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Panasonic Corp
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Panasonic Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a lighting fixture capable of improving emitting efficiency of light emitted from a light source.SOLUTION: The lighting fixture includes a plurality of LEDs 22 arranged in two rows by spacing a designated interval, and an optical member 3 arranged in front of the plurality of LEDs 22 and controlling light-distribution of light emitted from the plurality of LEDs 22. The optical member 3 has lenses 32, 33 arranged in a shape respectively corresponding to respective LEDs 22, and a connection section 34 for connecting between the neighboring lenses 32, 33. A diffusion surface 34a for emitting the light emitted from the LEDs 22 to a front side is arranged on the connection section 34.

Description

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

従来より、天井に取付可能な照明装置が提供されている(例えば特許文献1参照)。この照明装置は、複数のLED素子と、各LED素子の前方にそれぞれ配置されて対応するLED素子から放射された光の配光を制御する複数の凸レンズとを備える。この照明装置では、各LED素子から放射された光をそれぞれ対応する凸レンズにより配光制御することで、所望の照明環境を実現することができる。   Conventionally, lighting devices that can be mounted on a ceiling have been provided (see, for example, Patent Document 1). This illuminating device includes a plurality of LED elements and a plurality of convex lenses that are respectively arranged in front of the LED elements and control light distribution of light emitted from the corresponding LED elements. In this illumination device, a desired illumination environment can be realized by controlling the light distribution of the light emitted from each LED element by the corresponding convex lens.

特許第4453553号公報(段落[0031]、及び、第6図)Japanese Patent No. 4453553 (paragraph [0031] and FIG. 6)

上述の特許文献1に示した照明装置では、複数のLED素子を用いているため、各LED素子にそれぞれ対応する形で凸レンズを設ける必要があるが、各LED素子に対して個々に凸レンズを取り付けた場合には組立工数もかかり、コストアップになってしまう。そのため、すべての凸レンズを1つの光学レンズとして一体に設けるのが好ましいが、この場合、各凸レンズ間に形成される繋ぎ目部分にもLED素子からの光が入射され、繋ぎ目部分に入射された光は全反射することから、光の出射効率が低下するという問題があった。   In the illumination device shown in Patent Document 1 described above, since a plurality of LED elements are used, it is necessary to provide a convex lens in a form corresponding to each LED element, but a convex lens is individually attached to each LED element. In such a case, the number of assembling steps is increased and the cost is increased. Therefore, it is preferable that all the convex lenses are integrally provided as one optical lens. In this case, light from the LED element is also incident on the joint portion formed between the convex lenses, and is incident on the joint portion. Since the light is totally reflected, there is a problem that the light emission efficiency is lowered.

本発明は上記問題点に鑑みて為されたものであり、その目的とするところは、光源から放射される光の出射効率を向上させた照明器具を提供することにある。   The present invention has been made in view of the above problems, and an object of the present invention is to provide a luminaire with improved emission efficiency of light emitted from a light source.

本発明の照明器具は、所定の間隔を空けて配置される少なくとも2つの光源と、光源の前方に配置されて光源からの光の配光を制御する光学部材とを備える。光学部材は、各光源にそれぞれ対応する形で設けられた少なくとも2つのレンズ部と、隣接するレンズ部間を連結する連結部とを有し、連結部に、光源からの光を前面側に出射させる配光制御部が設けられている。   The luminaire of the present invention includes at least two light sources arranged at a predetermined interval, and an optical member arranged in front of the light sources to control light distribution from the light sources. The optical member has at least two lens portions provided in a form corresponding to each light source, and a connecting portion that connects adjacent lens portions, and emits light from the light source to the front side on the connecting portion. A light distribution control unit is provided.

この照明器具において、配光制御部は、少なくとも連結部の前面側に設けられた拡散面で構成されるのが好ましい。   In this lighting fixture, it is preferable that the light distribution control unit is composed of at least a diffusion surface provided on the front side of the coupling unit.

また、この照明器具において、配光制御部は、少なくとも連結部の前面側に設けられた凸状部で構成されるのも好ましい。   Moreover, in this lighting fixture, it is also preferable that the light distribution control unit is constituted by a convex portion provided at least on the front side of the connecting portion.

さらに、この照明器具において、配光制御部は、少なくとも連結部の後面側に設けられた傾斜面で構成されるのも好ましい。   Furthermore, in this lighting fixture, it is also preferable that the light distribution control unit is constituted by an inclined surface provided at least on the rear surface side of the coupling unit.

また、この照明器具において、傾斜面には、反射率を高める表面処理が施されているのも好ましい。   Moreover, in this lighting fixture, it is preferable that the inclined surface is subjected to a surface treatment for increasing the reflectance.

光源から放射される光の出射効率を向上させた照明器具を提供することができるという効果がある。   There is an effect that it is possible to provide a lighting fixture with improved emission efficiency of light emitted from the light source.

(a)〜(c)は本実施形態の照明器具の要部を示す模式図である。(A)-(c) is a schematic diagram which shows the principal part of the lighting fixture of this embodiment. 同上の一例を示す分解斜視図である。It is a disassembled perspective view which shows an example same as the above. (a)は前面側から見た同上の外観斜視図、(b)は後面側から見た同上の外観斜視図である。(A) is the same external perspective view seen from the front side, (b) is the same external perspective view seen from the rear side. 同上の要部拡大図である。It is a principal part enlarged view same as the above.

照明器具の実施形態を図面に基づいて説明する。本実施形態の照明器具は、例えばシーリングライトであり、天井に直接取り付けられて室内全体を照明するために用いられる。なお、以下の説明では本照明器具がシーリングライトの場合で説明するが、本照明器具はシーリングライトに限定されるものではなく、他の照明器具であってもよい。   Embodiment of a lighting fixture is described based on drawing. The lighting fixture of this embodiment is, for example, a ceiling light, and is used to illuminate the entire room by being directly attached to the ceiling. In addition, although the following description demonstrates the case where this lighting fixture is a ceiling light, this lighting fixture is not limited to a ceiling light, Other lighting fixtures may be sufficient.

図2は本実施形態の照明器具Aの一例を示す分解斜視図であり、この照明器具Aは、円盤状に形成された器具本体1と、器具本体1の中央部に配置される給電部5と、給電部5の周りに円環状に配置される発光部2とを備える。また照明器具Aは、発光部2の前方に配置され、発光部2から放射された光の配光を制御する光学部材3と、光学部材3の前方に配置され、光学部材3により配光制御された発光部2からの光を拡散させる拡散部材4とを備える。   FIG. 2 is an exploded perspective view illustrating an example of the lighting fixture A of the present embodiment. The lighting fixture A includes a fixture main body 1 formed in a disk shape and a power feeding unit 5 disposed at the center of the fixture main body 1. And the light emitting unit 2 arranged in an annular shape around the power feeding unit 5. The luminaire A is disposed in front of the light emitting unit 2, the optical member 3 that controls the light distribution of the light emitted from the light emitting unit 2, the front of the optical member 3, and the light distribution control by the optical member 3. And a diffusing member 4 for diffusing the light from the light emitting unit 2.

発光部2は、円弧状に湾曲する複数(図2では4個)の実装基板21を有し、各実装基板21の一面(図2中の上面)には、複数のLED(発光ダイオード)22が実装基板21の幅方向において2列で且つ実装基板21の長手方向に沿って実装されている。これらの実装基板21は、図2に示すように器具本体1の中央部に配置された給電部5の周りに円環状に配置され、例えば取付ねじ(図示せず)を用いて器具本体1に取り付けられる。ここに本実施形態では、複数のLED22により光源が構成されている。   The light emitting unit 2 includes a plurality of (four in FIG. 2) mounting substrates 21 that are curved in an arc shape, and a plurality of LEDs (light emitting diodes) 22 are provided on one surface (the upper surface in FIG. 2) of each mounting substrate 21. Are mounted in two rows in the width direction of the mounting substrate 21 and along the longitudinal direction of the mounting substrate 21. As shown in FIG. 2, these mounting boards 21 are arranged in an annular shape around a power feeding unit 5 arranged at the center of the instrument main body 1, and are attached to the instrument main body 1 using, for example, mounting screws (not shown). It is attached. Here, in the present embodiment, a light source is constituted by a plurality of LEDs 22.

給電部5は、実装基板21に実装された複数のLED22を点灯するための点灯電力を生成し、生成した点灯電力を電線(図示せず)を介して各実装基板21にそれぞれ供給する。具体的には、給電部5は、外部電源(図示せず)から供給された交流電圧を所望の電圧値(LED22を点灯させるのに必要な電圧値)の直流電圧に変換し、変換した直流電圧を各実装基板21にそれぞれ供給するのである。なおこの給電部5は、例えば取付ねじ(図示せず)を用いて器具本体1に取り付けられる。   The power feeding unit 5 generates lighting power for lighting the plurality of LEDs 22 mounted on the mounting board 21, and supplies the generated lighting power to each mounting board 21 via an electric wire (not shown). Specifically, the power supply unit 5 converts an AC voltage supplied from an external power source (not shown) into a DC voltage having a desired voltage value (a voltage value necessary for lighting the LED 22), and converts the converted DC voltage. A voltage is supplied to each mounting substrate 21. In addition, this electric power feeding part 5 is attached to the instrument main body 1 using an attachment screw (not shown), for example.

拡散部材4は、例えば光拡散剤を添加させた乳白色のアクリル樹脂により一面(図2中の下面)が開口するドーム状に形成され、光学部材3の前方から器具本体1に着脱自在に取り付けられる。   The diffusing member 4 is formed in a dome shape with one surface (the lower surface in FIG. 2) opened by milky white acrylic resin to which a light diffusing agent is added, for example, and is detachably attached to the instrument body 1 from the front of the optical member 3. .

光学部材3は、透光性を有する材料(例えばアクリル樹脂、ポリカーボネート樹脂、ガラスなど)からなり、中央部に円形の開口部31aが形成された円盤状の本体部31を有する。本体部31の一面(図2中の上面)には、図2及び図4に示すように前方(図4中の上側)に凸となるレンズ部32,33が同心円状に2列に設けられている。ここに本実施形態では、各実装基板21の内側(給電部5側)に実装されたLED22に対応する形でレンズ部32が設けられ、また各実装基板21の外側(給電部5と反対側)に実装されたLED22に対応する形でレンズ部33が設けられている。また、器具本体1の径方向(図4中の左右方向)においてレンズ部32とレンズ部33の間には、これらのレンズ部32,33間を連結する連結部34が一体に設けられている。さらに、各レンズ部32,33の後面側(図4中の下面側)には、対応するLED22を配置するための収納凹部32a,33aがそれぞれ設けられている。以下、連結部34の構成を図1に基づいて説明する。   The optical member 3 is made of a light-transmitting material (for example, acrylic resin, polycarbonate resin, glass, etc.), and has a disc-shaped main body 31 having a circular opening 31a formed at the center. On one surface of the main body 31 (upper surface in FIG. 2), as shown in FIGS. 2 and 4, lens portions 32 and 33 that are convex forward (upper in FIG. 4) are provided in two rows concentrically. ing. Here, in the present embodiment, the lens unit 32 is provided in a form corresponding to the LED 22 mounted on the inner side (the power feeding unit 5 side) of each mounting substrate 21, and the outer side (the side opposite to the power feeding unit 5) of each mounting substrate 21. The lens portion 33 is provided in a form corresponding to the LED 22 mounted on the). In addition, a connecting portion 34 that connects the lens portions 32 and 33 is integrally provided between the lens portion 32 and the lens portion 33 in the radial direction of the instrument body 1 (left and right direction in FIG. 4). . Furthermore, storage concave portions 32a and 33a for arranging the corresponding LEDs 22 are provided on the rear surface side (the lower surface side in FIG. 4) of the lens portions 32 and 33, respectively. Hereinafter, the structure of the connection part 34 is demonstrated based on FIG.

図1(a)は連結部34の一例を示す模式図であり、本例では連結部34の前面(図1(a)中の上面)に、例えばシボやサンドブラストによって拡散面34aを形成している。そしてこの場合、LED22から放射された光のうち連結部34の前面に向かう光が、図1(a)に示すように全反射することなく、拡散面34aで拡散されて前方に出射される。   FIG. 1A is a schematic diagram showing an example of the connecting portion 34. In this example, a diffusion surface 34a is formed on the front surface (upper surface in FIG. 1A) of the connecting portion 34 by, for example, embossing or sandblasting. Yes. In this case, the light emitted from the LED 22 toward the front surface of the connecting portion 34 is diffused by the diffusion surface 34a and emitted forward without being totally reflected as shown in FIG.

また、図1(b)は連結部34の他の例を示す模式図であり、本例では連結部34の前面に複数の凸状部34bを設けている。そしてこの場合、LED22から放射された光のうち連結部34の前面に向かう光が、図1(b)に示すように全反射されることなく、凸状部34bを透過して前方に出射される。   FIG. 1B is a schematic view showing another example of the connecting portion 34, and in this example, a plurality of convex portions 34 b are provided on the front surface of the connecting portion 34. In this case, of the light emitted from the LED 22, the light traveling toward the front surface of the connecting portion 34 is transmitted through the convex portion 34 b without being totally reflected as shown in FIG. The

さらに、図1(c)は連結部34のさらに他の例を示す模式図であり、本例では連結部34の後面に、前面側に行くにつれて互いに近づく方向に傾斜する一対の傾斜面34cが設けられている。また、連結部34の前面において一対の傾斜面34cに対応する部位には、前方に突出する突台部34dが設けられている。そしてこの場合、LED22から放射された光のうち連結部34側に向かう光が、図1(c)に示すように傾斜面34cで反射されて突台部34dから前方に出射される。ここに本実施形態では、拡散面34a、凸状部34b、又は傾斜面34cにより配光制御部が構成されている。   Further, FIG. 1C is a schematic view showing still another example of the connecting portion 34. In this example, a pair of inclined surfaces 34c that are inclined toward each other toward the front side are formed on the rear surface of the connecting portion 34. Is provided. Further, a projecting portion 34d that protrudes forward is provided at a portion corresponding to the pair of inclined surfaces 34c on the front surface of the connecting portion 34. In this case, the light emitted from the LED 22 toward the connecting portion 34 is reflected by the inclined surface 34c and emitted forward from the projecting portion 34d as shown in FIG. Here, in this embodiment, the light distribution control unit is configured by the diffusion surface 34a, the convex portion 34b, or the inclined surface 34c.

次に、照明器具Aの組立手順について説明する。作業者が、器具本体1の中央部に給電部5を取り付けるとともに、器具本体1の一面(図2中の上面)に実装基板21を取り付けた後、給電部5と各実装基板21との間を電線(図示せず)を用いて電気的に接続する。その後作業者が、各実装基板21を覆うように前方から光学部材3を器具本体1に取り付けた後、さらに前方から拡散部材4を器具本体1に取り付けることで、照明器具Aの組み立てが完了する(図3(a)(b)参照)。   Next, the assembly procedure of the lighting fixture A will be described. The operator attaches the power feeding unit 5 to the center of the instrument body 1 and attaches the mounting substrate 21 to one surface (the upper surface in FIG. 2) of the instrument body 1, and then between the power feeding unit 5 and each mounting substrate 21. Are electrically connected using an electric wire (not shown). After that, the operator attaches the optical member 3 to the fixture body 1 from the front so as to cover each mounting substrate 21, and then attaches the diffusion member 4 to the fixture body 1 from the front, thereby completing the assembly of the lighting fixture A. (See FIGS. 3A and 3B).

そして、給電部5の後面側に一体に設けられた引掛けコネクタ6(図3(b)参照)を、天井に設けられた引掛けシーリング(図示せず)に取り付けることで、照明器具Aの施工が完了する。   And by attaching the hook connector 6 (refer FIG.3 (b)) integrally provided in the rear surface side of the electric power feeding part 5 to the hook ceiling (not shown) provided in the ceiling, the lighting fixture A of FIG. Construction is complete.

而して本実施形態によれば、レンズ部32,33を連結する連結部34に配光制御部(拡散面34a、凸状部34b、傾斜面34cのうちの1つ)を設けることによって、連結部34に向けて放射されたLED22からの光を、連結部34の前面で全反射されることなく、前方に出射することができる。そのため、連結部34から前方に出射された光の分だけ出射効率を向上させることができるとともに、レンズ部32,33間の輝度を高めることもできる。また、図1(b)に示すように連結部34の前面に凸状部34bを設けた場合には、連結部34の前面に拡散面34aを形成した場合に比べて表面ロスを少なくすることができる。   Thus, according to the present embodiment, by providing the light distribution control unit (one of the diffusing surface 34a, the convex portion 34b, and the inclined surface 34c) in the connecting portion 34 that connects the lens portions 32 and 33, The light from the LED 22 radiated toward the connecting portion 34 can be emitted forward without being totally reflected by the front surface of the connecting portion 34. Therefore, the emission efficiency can be improved by the amount of light emitted forward from the connecting portion 34, and the luminance between the lens portions 32 and 33 can be increased. Further, when the convex portion 34b is provided on the front surface of the connecting portion 34 as shown in FIG. 1B, the surface loss is reduced compared to the case where the diffusion surface 34a is formed on the front surface of the connecting portion 34. Can do.

ここにおいて、例えばアルミニウムや銀などを各傾斜面34cに蒸着させて各傾斜面34cの反射率を高めてもよい。この場合、傾斜面34cで反射させる光量を増加させることができるので、光の出射効率をさらに向上させることができるとともに、レンズ部32,33間の輝度をさらに高めることができる。   Here, for example, aluminum or silver may be vapor-deposited on each inclined surface 34c to increase the reflectance of each inclined surface 34c. In this case, the amount of light reflected by the inclined surface 34c can be increased, so that the light emission efficiency can be further improved and the luminance between the lens portions 32 and 33 can be further increased.

なお本実施形態では、配光制御部として拡散面34a、凸状部34b、傾斜面34cのうちの何れか1つを連結部34に設けているが、拡散面34a、凸状部34b、傾斜面34cを組み合わせてもよく、同様に光の出射効率を向上させることができるとともに、レンズ部32,33間の輝度を高めることもできる。また光源についてもLEDに限定されるものではなく、例えば有機ELなどであってもよい。さらに、LED22及びレンズ部32,33の配置は円環状に限定されるものではなく、例えば四角環状や直線状であってもよい。   In the present embodiment, any one of the diffusing surface 34a, the convex portion 34b, and the inclined surface 34c is provided in the connecting portion 34 as the light distribution control unit. However, the diffusing surface 34a, the convex portion 34b, and the inclined surface 34c are provided. The surface 34c may be combined, and similarly the light emission efficiency can be improved and the luminance between the lens portions 32 and 33 can be increased. The light source is not limited to the LED, and may be an organic EL, for example. Furthermore, the arrangement of the LEDs 22 and the lens portions 32 and 33 is not limited to an annular shape, and may be, for example, a square annular shape or a linear shape.

3 光学部材
22 LED(光源)
32,33 レンズ部
34 連結部
34a 拡散面(配光制御部)
A 照明器具
3 Optical member 22 LED (light source)
32, 33 Lens part 34 Connection part 34a Diffusion surface (light distribution control part)
A lighting equipment

Claims (5)

所定の間隔を空けて配置される少なくとも2つの光源と、
前記光源の前方に配置されて前記光源からの光の配光を制御する光学部材とを備え、
前記光学部材は、前記各光源にそれぞれ対応する形で設けられた少なくとも2つのレンズ部と、隣接する前記レンズ部間を連結する連結部とを有し、
前記連結部に、前記光源からの光を前面側に出射させる配光制御部が設けられていることを特徴とする照明器具。
At least two light sources arranged at a predetermined interval;
An optical member disposed in front of the light source to control light distribution from the light source;
The optical member has at least two lens portions provided in a shape corresponding to each of the light sources, and a connecting portion that connects the adjacent lens portions,
The light fixture characterized by the light distribution control part which radiate | emits the light from the said light source to the front side is provided in the said connection part.
前記配光制御部は、少なくとも前記連結部の前面側に設けられた拡散面で構成されることを特徴とする請求項1記載の照明器具。   The lighting device according to claim 1, wherein the light distribution control unit includes at least a diffusion surface provided on a front surface side of the connection unit. 前記配光制御部は、少なくとも前記連結部の前面側に設けられた凸状部で構成されることを特徴とする請求項1記載の照明器具。   The lighting device according to claim 1, wherein the light distribution control unit includes at least a convex portion provided on a front surface side of the connecting portion. 前記配光制御部は、少なくとも前記連結部の後面側に設けられた傾斜面で構成されることを特徴とする請求項1〜3の何れか1項に記載の照明器具。   The said light distribution control part is comprised with the inclined surface provided in the rear surface side of the said connection part at least, The lighting fixture of any one of Claims 1-3 characterized by the above-mentioned. 前記傾斜面には、反射率を高める表面処理が施されていることを特徴とする請求項4記載の照明器具。   The lighting apparatus according to claim 4, wherein the inclined surface is subjected to a surface treatment for increasing a reflectance.
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JP2018037177A (en) * 2016-08-30 2018-03-08 日立アプライアンス株式会社 Luminaire
JP2019033047A (en) * 2017-08-09 2019-02-28 パナソニックIpマネジメント株式会社 Illuminating device, and luminaire
JP2021044265A (en) * 2016-06-13 2021-03-18 株式会社ホタルクス Led lighting fixture
JP2021044266A (en) * 2016-06-13 2021-03-18 株式会社ホタルクス Led lighting fixture

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Publication number Priority date Publication date Assignee Title
JP2014207125A (en) * 2013-04-12 2014-10-30 パナソニック株式会社 Illuminating device
US9849984B2 (en) 2013-04-12 2017-12-26 Panasonic Intellectual Property Management Co., Ltd. Lighting apparatus with optical member having asymmetric light incident surface
JP2021044265A (en) * 2016-06-13 2021-03-18 株式会社ホタルクス Led lighting fixture
JP2021044266A (en) * 2016-06-13 2021-03-18 株式会社ホタルクス Led lighting fixture
JP2018037177A (en) * 2016-08-30 2018-03-08 日立アプライアンス株式会社 Luminaire
CN107781735A (en) * 2016-08-30 2018-03-09 日立空调·家用电器株式会社 Lighting device
JP2019033047A (en) * 2017-08-09 2019-02-28 パナソニックIpマネジメント株式会社 Illuminating device, and luminaire

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