JP2008159394A - Fitting unit and surface light-emitting device - Google Patents

Fitting unit and surface light-emitting device Download PDF

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Publication number
JP2008159394A
JP2008159394A JP2006346632A JP2006346632A JP2008159394A JP 2008159394 A JP2008159394 A JP 2008159394A JP 2006346632 A JP2006346632 A JP 2006346632A JP 2006346632 A JP2006346632 A JP 2006346632A JP 2008159394 A JP2008159394 A JP 2008159394A
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Prior art keywords
light
light source
mounting
source module
emitting
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Japanese (ja)
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Masatoshi Kawamata
Yukio Yoshikawa
幸雄 吉川
正敏 河又
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Koha Co Ltd
株式会社光波
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Priority to JP2006346632A priority Critical patent/JP2008159394A/en
Publication of JP2008159394A publication Critical patent/JP2008159394A/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S2/00Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
    • F21S2/005Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction of modular construction
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21KNON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fitting unit, along with a surface light-emitting device, with which fitting operation of a light source is easy and capable of changing a light emitting area at will to sufficiently suppress occurrence of uneven light emission. <P>SOLUTION: A surface light-emitting device 10 comprises a plurality of light source modules 12, and a fitting unit 11 comprising a plurality of fitting members 110 having a plurality of engaged parts 112 with which the light source modules 12 are detachably engaged as well as a plurality of connection parts 113 for detachably connecting, for each light source module 12, the plurality of fitting members 110 arrayed in two dimension. The light source module 12 comprises a circuit board, an LED mounted on the circuit board, and a light direction converting element 120 in which the light from the LED enters through its bottom surface and is projected sideways. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、光源モジュールが取り付けられる取付けユニット、およびそれを用いた面状発光装置に関する。   The present invention relates to an attachment unit to which a light source module is attached, and a planar light emitting device using the attachment unit.
従来、LEDの光パワーが大きくなり、省エネルギー、環境負荷物質を含まないクリーンな光源として、電球、蛍光灯等の光源で照明されていた看板、液晶テレビ等のバックライト、照明機器等の光源がLEDに置き換わっている。また、小型のLEDを使用することができるようになったため、設計の自由度が増し、大型かつ薄型の面状光源が市場で要求されている。薄型になることで、既存の面光源は、省スペースとなり、設置できなかった場所にも設置できるようになる。   Conventionally, LED light power is increased, energy saving, and clean light sources that do not contain environmentally hazardous substances. Light sources such as signboards, backlights for liquid crystal televisions, and lighting devices that have been illuminated with light sources such as light bulbs and fluorescent lamps. It has been replaced by an LED. In addition, since a small LED can be used, the degree of freedom in design increases, and a large and thin planar light source is required in the market. By thinning, the existing surface light source is space-saving and can be installed in places where it could not be installed.
このような照明機器等に適用される従来の面状発光装置として、例えば、配線基板と、この配線基板の素子搭載面内に並列された複数のLEDと、これらのLEDからの出射光を照明対象に導くための拡散部付きの導光部材とを備えたものが提案されている(特許文献1)。この構成によれば、個々のLED素子に発光特性のばらつきがあっても、照度の均一化が図れる。
特開2004−14365号公報
As a conventional planar light emitting device applied to such an illumination device, for example, a wiring board, a plurality of LEDs arranged in parallel on the element mounting surface of the wiring board, and light emitted from these LEDs are illuminated. The thing provided with the light guide member with the spreading | diffusion part for guide | inducing to an object is proposed (patent document 1). According to this configuration, it is possible to make the illuminance uniform even if the individual LED elements have variations in light emission characteristics.
JP 2004-14365 A
しかし、従来の面状発光装置によると、LEDの取り付けを1個ずつ行うものであるため、LEDの個数と同数の取り付けを必要としていた。この結果、発光面積(装置の規模)が大きくなると、それだけ取付数が嵩み、取付作業を煩雑にするという問題があった。   However, according to the conventional planar light emitting device, since the LEDs are attached one by one, it is necessary to attach the same number as the number of LEDs. As a result, when the light emitting area (the scale of the apparatus) is increased, the number of attachments increases accordingly, and there is a problem that the installation work becomes complicated.
従って、本発明の目的は、光源の取付作業が容易で、発光面積を任意に変更することができ、発光むらの発生を十分に抑制することができる取付けユニットおよび面状発光装置を提供することにある。   Accordingly, an object of the present invention is to provide a mounting unit and a planar light emitting device that can easily mount a light source, can arbitrarily change the light emitting area, and can sufficiently suppress the occurrence of uneven light emission. It is in.
本発明は、上記目的を達成するため、複数の光源モジュールが着脱可能に嵌合される複数の被嵌合部を有する複数の取付け部材と、1次元状または2次元状に配列された前記複数の取付け部材を前記光源モジュール毎に分離可能に連結する複数の連結部とを備えたことを特徴とする取付けユニットを提供する。   In order to achieve the above object, the present invention provides a plurality of mounting members having a plurality of fitted portions into which a plurality of light source modules are detachably fitted, and the plurality of mounting members arranged one-dimensionally or two-dimensionally. There is provided a mounting unit comprising a plurality of connecting portions that detachably connect the mounting members of each light source module.
また、本発明は、上記目的を達成するため、複数の光源モジュールと、前記複数の光源モジュールが着脱可能に嵌合される複数の被嵌合部を有する複数の取付け部材、および1次元状または2次元状に配列された前記複数の取付け部材を前記光源モジュール毎に分離可能に連結する複数の連結部を有する取付けユニットとを備えたことを特徴とする面状発光装置を提供する。   In order to achieve the above object, the present invention provides a plurality of light source modules, a plurality of attachment members having a plurality of fitted portions into which the plurality of light source modules are detachably fitted, and one-dimensional or There is provided a planar light emitting device comprising a mounting unit having a plurality of connecting portions that detachably connect the plurality of mounting members arranged two-dimensionally for each light source module.
上記取付けユニットおよび上記面状発光装置によれば、光源モジュールを嵌合により取付け部材に取り付けることができるので、光源モジュールの取付けが容易となる。また、取付け部材を連結部から分離し、必要な数の取付け部材を用いることにより、必要な大きさの発光面積が得られる。さらに、光方向変換素子を用いた場合、光方向変換素子の底面から入射した光が側方に変換されて出射されることにより、照射範囲が拡大され、発光むらの発生が抑制される。   According to the attachment unit and the planar light emitting device, the light source module can be attached to the attachment member by fitting, so that the light source module can be easily attached. Further, by separating the attachment member from the connecting portion and using a necessary number of attachment members, a light emitting area having a necessary size can be obtained. Further, when the light direction changing element is used, the light incident from the bottom surface of the light direction changing element is converted to the side and emitted, thereby expanding the irradiation range and suppressing the occurrence of uneven light emission.
本発明によると、光源の取付作業が容易で、発光面積を任意に変更することができ、発光むらの発生を十分に抑制することができる。   According to the present invention, the light source can be easily attached, the light emission area can be arbitrarily changed, and the occurrence of uneven light emission can be sufficiently suppressed.
図1は、本発明の実施の形態に係る面状発光装置を適用した広告看板を示し、(a)は正面図、(b)は(a)のA−A断面図である。   1A and 1B show an advertising billboard to which a planar light emitting device according to an embodiment of the present invention is applied. FIG. 1A is a front view, and FIG. 1B is a cross-sectional view taken along line AA in FIG.
この広告看板1は、開口2aを有する略箱型の筐体2と、開口2aに設けられた広告表示部3と、筐体2の背面板2bに取り付けられ、広告表示部3に背面側から照明光を照射する面状発光装置10とを備える。   This advertising signboard 1 is attached to a substantially box-shaped casing 2 having an opening 2a, an advertisement display section 3 provided in the opening 2a, and a back plate 2b of the casing 2, and is attached to the advertisement display section 3 from the back side. And a planar light emitting device 10 that emits illumination light.
筐体2は、背面板2bと、4つの側面板2cとを備え、金属材料またはポリカーボネート等の樹脂材料から形成されており、側面板2cの内面には、光の反射効率を高めるため、アルミニウムシート等の金属シートが貼り付けられている。なお、金属シートの代わりに、白色塗装を施してもよく、筐体2を白色の樹脂材料から形成してもよい。   The housing 2 includes a back plate 2b and four side plates 2c, and is made of a metal material or a resin material such as polycarbonate. The inner surface of the side plate 2c is made of aluminum in order to increase the light reflection efficiency. A metal sheet such as a sheet is attached. Instead of the metal sheet, white coating may be applied, and the housing 2 may be formed from a white resin material.
広告表示部3は、例えば、広告板5を保護する透明樹脂、透明ガラス等からなる透明板4と、広告が印刷された広告板5と、透明樹脂、透明ガラス等からなり、表面または裏面に微細な凹凸を有して入射光を散乱させる散乱板6とを積層して構成されている。なお、散乱板6は、散乱材入りの樹脂板を用いてもよい。   The advertisement display unit 3 is made of, for example, a transparent plate 4 made of a transparent resin, transparent glass, or the like that protects the advertising plate 5, an advertisement board 5 on which an advertisement is printed, a transparent resin, transparent glass, or the like. A scattering plate 6 that has fine irregularities and scatters incident light is laminated. The scattering plate 6 may be a resin plate containing a scattering material.
面状発光装置10は、背面板2bに取り付けられる取付けユニット11と、取付けユニット11に着脱可能に嵌合される複数の光源モジュール12と、光源モジュール12上に配置された反射板13とを備える。なお、面状発光装置10は、筐体2や散乱板6等を更に含めて構成してもよい。   The planar light emitting device 10 includes an attachment unit 11 that is attached to the back plate 2b, a plurality of light source modules 12 that are detachably fitted to the attachment unit 11, and a reflection plate 13 that is disposed on the light source module 12. . The planar light emitting device 10 may be configured to further include the housing 2, the scattering plate 6, and the like.
反射板13は、光源モジュール12から斜め後方に出射された光や、光源モジュール12から出射され、広告表示部3で反射した光を広告表示部3側に反射するものである。このような反射板13として、例えば、ABS樹脂等の樹脂材料から形成され、広告表示部3側の表面に反射面として白色塗装を施したものを用いることができるが、白色の樹脂材料から形成してもよい。   The reflection plate 13 reflects light emitted obliquely backward from the light source module 12 and light emitted from the light source module 12 and reflected by the advertisement display unit 3 to the advertisement display unit 3 side. As such a reflecting plate 13, for example, a material formed from a resin material such as ABS resin, and a surface painted on the advertisement display unit 3 side with a white coating as a reflecting surface can be used, but it is formed from a white resin material. May be.
図2は、面状発光装置10の平面図、図3は、図2の状態から反射板13を取り除いた状態を示す平面図、図4は、面状発光装置10の分解斜視図である。   2 is a plan view of the planar light emitting device 10, FIG. 3 is a plan view showing a state in which the reflecting plate 13 is removed from the state of FIG. 2, and FIG. 4 is an exploded perspective view of the planar light emitting device 10.
面状発光装置10は、図2〜図4に示すように、取付けユニット11に複数の光源ユニット12が嵌合され、その上から反射板13が取り付けられる。   As shown in FIGS. 2 to 4, in the planar light emitting device 10, a plurality of light source units 12 are fitted to an attachment unit 11, and a reflecting plate 13 is attached thereon.
反射板13は、光源モジュール12の後述する光方向変換部121が挿通する開口13a、および取付け部材110の後述する位置決め凸部117が嵌合する位置決め穴13bを有する。   The reflecting plate 13 has an opening 13a through which a light direction changing portion 121 (to be described later) of the light source module 12 is inserted, and a positioning hole 13b into which a positioning protrusion 117 (to be described later) of the mounting member 110 is fitted.
<取付けユニット>
取付けユニット11は、図3、図4に示すように、薄板四角形状(例えば10×60×60mm)を有する複数(例えば4×5個)の取付け部材110が2次元状に配列され、これらの取付け部材110は、互いに分離可能に連結されている。なお、取付け部材110の数は、上記の数に限定されず、また取付け部材110が1次元状に配列されていてもよい。また、取付け部材110は、取付けユニット11を筐体2の背面板2bにねじ7で固定するための開口111と、光源モジュール12が着脱可能に嵌合される被嵌合部112と、取付け部材110間を分離可能に連結する連結部113とを備える。このような取付け部材110は、例えば、ABS樹脂等の樹脂材料から一体的に形成されている。取付けユニット11を筐体2の背面板2bにねじ7で固定する場合、全ての取付け部材110を固定してもよく、四隅に位置する取付け部材11のみを固定してもよく、選択したいくつかの取付け部材11を固定してもよい。
<Mounting unit>
As shown in FIGS. 3 and 4, the mounting unit 11 includes a plurality of (for example, 4 × 5) mounting members 110 having a thin plate rectangular shape (for example, 10 × 60 × 60 mm) arranged in a two-dimensional manner. The attachment members 110 are connected to each other so as to be separable from each other. The number of attachment members 110 is not limited to the above number, and the attachment members 110 may be arranged in a one-dimensional manner. The mounting member 110 includes an opening 111 for fixing the mounting unit 11 to the back plate 2b of the housing 2 with the screw 7, a fitted portion 112 into which the light source module 12 is detachably fitted, and a mounting member. 110 is provided with a connecting portion 113 that connects the 110 to each other in a separable manner. Such an attachment member 110 is integrally formed from, for example, a resin material such as ABS resin. When fixing the mounting unit 11 to the back plate 2b of the housing 2 with the screws 7, all the mounting members 110 may be fixed, or only the mounting members 11 located at the four corners may be fixed. The attachment member 11 may be fixed.
(取付け部材)
図5は、1組の取付け部材110および光源モジュール12の平面図、図6(a)は、取付け部材110の斜視図、図6(b)は、図6(a)のF−F断面図、図7は図5のB−B断面図、図8は図5のC−C断面図である。
(Mounting member)
5 is a plan view of one set of mounting member 110 and the light source module 12, FIG. 6A is a perspective view of the mounting member 110, and FIG. 6B is a cross-sectional view taken along line FF in FIG. 7 is a BB cross-sectional view of FIG. 5, and FIG. 8 is a CC cross-sectional view of FIG.
取付け部材110は、前述したように、開口111、被嵌合部112および連結部113を備え、さらに、ケーブル14が係止される係止部114と、反射板13の位置決め穴13bに嵌合して反射板13を位置決めする位置決め凸部117とを備える。   As described above, the mounting member 110 includes the opening 111, the fitted portion 112, and the connecting portion 113, and further fits into the locking portion 114 where the cable 14 is locked and the positioning hole 13 b of the reflector 13. And a positioning projection 117 for positioning the reflecting plate 13.
そして取付けユニット11の上端側の横一列、および左端側の縦一列以外の取付け部材110は、図6に示すように、4つの側面に差込凹部115がそれぞれ設けられている。取付けユニット11の上端側の横一列、および左端側の縦一列に位置する取付け部材110の側面には、図3、図6に示すように、他の取付けユニット11の差込凹部115に差し込まれる差込凸部116が上方または左方に突設されている。従って、左上端に位置する取付けユニット11は、上方および左方に差込凸部116が突設されている。これにより、取付けユニット11の差込凸部116を他の取付けユニット11の差込凹部115に差し込むことにより、複数の取付けユニット11を組み合わせて発光面積を拡大することができる。   As shown in FIG. 6, the mounting members 110 other than the horizontal row on the upper end side and the vertical row on the left end side of the mounting unit 11 are provided with insertion recesses 115 on four side surfaces, respectively. As shown in FIGS. 3 and 6, as shown in FIGS. 3 and 6, the mounting unit 11 is inserted into the insertion recess 115 on the side surface of the mounting member 110 located in the horizontal row on the upper end side and the vertical row on the left end side. The insertion protrusion 116 protrudes upward or leftward. Accordingly, the mounting unit 11 located at the upper left end is provided with the protrusions 116 protruding upward and leftward. Thereby, by inserting the insertion convex portion 116 of the mounting unit 11 into the insertion concave portion 115 of the other mounting unit 11, the light emitting area can be increased by combining the plurality of mounting units 11.
また、取付け部材110は、ケーブル14を収納する薄肉のケーブル収納部118A〜118Dを形成し、ケーブル14をケーブル収納部118A〜118Dに収納したとき、ケーブル14が取付け部材110の表面から突出しないようにしている。   In addition, the attachment member 110 forms thin cable storage portions 118A to 118D for storing the cable 14, and the cable 14 does not protrude from the surface of the attachment member 110 when the cable 14 is stored in the cable storage portions 118A to 118D. I have to.
(取付け部材の分離構造)
連結部113は、図6(b)に示すように、表面と裏面にそれぞれV溝113aを形成し、V溝113a間の最小肉厚を0.5〜2mm、好ましくは1〜1.5mmとして取付け部材110の分離を容易にしている。
(Separation structure of mounting members)
As shown in FIG. 6B, the connecting portion 113 is formed with V grooves 113a on the front surface and the back surface, respectively, and the minimum thickness between the V grooves 113a is 0.5 to 2 mm, preferably 1 to 1.5 mm. The attachment member 110 can be easily separated.
(光源モジュールの嵌合構造)
被嵌合部112は、光源モジュール12の嵌合部分に対応した形状を有する凹部112aと、外側に弾性変形可能に形成された複数(例えば4つ)の係止片112bとから構成されている。
(Light source module fitting structure)
The to-be-fitted part 112 is comprised from the recessed part 112a which has a shape corresponding to the fitting part of the light source module 12, and several (for example, four) locking pieces 112b formed in the outer side so that elastic deformation is possible. .
光源モジュール12を凹部112aに押し込むと、光源モジュール12に設けられた図7に示す凸部122gが係止片112bを外側に弾性変形させる。光源モジュール12が凹部112aの底面に当接すると、係止片112bの変形が復帰して凸部122gの上面に係止片112bが係止し、光源モジュール12が被嵌合部12に取り付けられる。光源モジュール12の交換等のために光源モジュール12を取付け部材110から取り外すときは、マイナスドライバ等により係止片112bを外側に広げ、光源モジュール12を持ち上げることにより、光源モジュール12を取り外すことができる。   When the light source module 12 is pushed into the concave portion 112a, the convex portion 122g shown in FIG. 7 provided in the light source module 12 elastically deforms the locking piece 112b outward. When the light source module 12 comes into contact with the bottom surface of the recess 112a, the deformation of the locking piece 112b is restored, the locking piece 112b is locked to the upper surface of the convex portion 122g, and the light source module 12 is attached to the fitted portion 12. . When removing the light source module 12 from the mounting member 110 for replacement of the light source module 12 or the like, the light source module 12 can be removed by spreading the locking piece 112b outward with a flathead screwdriver or the like and lifting the light source module 12. .
(ケーブルの係止構造)
ケーブルの係止部114は、図8に示すように、光源モジュール12が嵌合する凹部112aの周辺の凹部周辺部119に傾斜面119aを形成し、傾斜面119aに対向するように傾斜面114aを有するケーブル保持片114bを設けたものである。傾斜面119a,114aに導体14aを被覆部材14bで被覆したケーブル14を押し込むと、
ケーブル保持片114bが弾性変形してケーブル14を凹部周辺部119とケーブル保持片114bとの間に収容し、ケーブル保持片114bが元の位置に復帰してケーブル14がケーブル係止部114に係止される。
(Cable locking structure)
As shown in FIG. 8, the cable locking portion 114 is formed with an inclined surface 119a in the peripheral portion 119 around the concave portion 112a into which the light source module 12 is fitted, and the inclined surface 114a so as to face the inclined surface 119a. Is provided with a cable holding piece 114b. When the cable 14 in which the conductor 14a is covered with the covering member 14b is pushed into the inclined surfaces 119a and 114a,
The cable holding piece 114b is elastically deformed to accommodate the cable 14 between the peripheral portion 119 of the recess and the cable holding piece 114b, the cable holding piece 114b returns to the original position, and the cable 14 is engaged with the cable locking portion 114. Stopped.
<光源モジュール>
図9(a)は、図5のD−D断面図、図9(b)は、図5のE−E断面図、図10は、光方向変換素子を示し、(a)は斜視図、(b)は平面図、(c)は下面図、図11は、光方向変換素子の縦断面図である。
<Light source module>
9A is a cross-sectional view taken along the line DD in FIG. 5, FIG. 9B is a cross-sectional view taken along the line EE in FIG. 5, FIG. 10 shows the light redirecting element, and FIG. (B) is a plan view, (c) is a bottom view, and FIG. 11 is a longitudinal sectional view of the light direction changing element.
光源モジュール12は、光方向変換素子120と、光方向変換素子120に嵌合するホルダ片123と、ホルダ片123に取り付けられる、LED20が搭載された回路基板124とを備える。   The light source module 12 includes a light direction conversion element 120, a holder piece 123 fitted to the light direction conversion element 120, and a circuit board 124 mounted on the holder piece 123 and having the LED 20 mounted thereon.
(光方向変換素子)
光方向変換素子120は、光方向変換部121と、ケース部122とから構成され、例えば、PMMA(ポリメタクリル酸メチル)樹脂から一体的に形成されている。なお、光方向変換素子120は、ポリカーボネート及びエポキシ・シリコーン等の透明樹脂や透明ガラス等、あるいは着色された材料から形成されていてもよい。
(Light direction change element)
The light direction changing element 120 includes a light direction changing portion 121 and a case portion 122, and is integrally formed of, for example, a PMMA (polymethyl methacrylate) resin. The light redirecting element 120 may be formed of a transparent resin such as polycarbonate and epoxy / silicone, transparent glass, or a colored material.
光方向変換素子120のケース部122は、図9(a),(b)及び図10(a)〜(c)に示すように、ホルダ片123が嵌合する凹部122aと、ホルダ片123側に突出する2つの第1位置決め用ピン122b及び4つの第2位置決め用ピン122cと、ケーブル14を挿通させる切り欠き122dと、切り欠き122dに連通する樹脂充填用の空間部122eと、各空間部122eに連通する基板接続用の空間部122fと、取り付け部材110の係止片112bに係止する複数(例えば4つ)の凸部122gとが設けられている。空間部122eは、光方向変換素子120、回路基板124およびホルダ片123を組み立てた後、樹脂が充填されて封止される。   As shown in FIGS. 9A and 9B and FIGS. 10A to 10C, the case 122 of the light redirecting element 120 includes a recess 122a into which the holder piece 123 is fitted, and the holder piece 123 side. Two first positioning pins 122b and four second positioning pins 122c projecting to each other, a notch 122d through which the cable 14 is inserted, a resin-filled space portion 122e communicating with the notch 122d, and each space portion A board connecting space 122f communicating with 122e and a plurality (for example, four) of convex parts 122g that are locked to the locking pieces 112b of the mounting member 110 are provided. The space 122e is sealed by being filled with resin after assembling the light redirecting element 120, the circuit board 124, and the holder piece 123.
上記第1位置決め用ピン122bは、後述する凹部121aの近傍に位置し、回路基板124のピン嵌合孔(図示せず)に嵌合される。上記第2位置決め用ピン122cは、ケース部122の裏面の4隅部に位置し、ホルダ片123の段状部123aのピン嵌合孔(図示せず)に嵌合される。   The first positioning pin 122b is positioned in the vicinity of a recess 121a described later, and is fitted into a pin fitting hole (not shown) of the circuit board 124. The second positioning pins 122 c are located at the four corners on the back surface of the case portion 122 and are fitted into pin fitting holes (not shown) of the stepped portion 123 a of the holder piece 123.
光方向変換素子120の光方向変換部121は、LED20を収容する凹部121aが形成されている。凹部121aは、LED20から出射される光を入射する第1光入射面(底面)121b1と、第2光入射面(底面)121b2とからなる。また、光方向変換部121は、第1光入射面121b1から入射した光を全反射する光反射面121cと、この光反射面121cで全反射した光を屈折させて側方、斜め前方および斜め後方に出射する光出射面121dとを有する。光入射面121b、光反射面121cおよび光出射面121dは、鏡面加工されている。 The light direction changing portion 121 of the light direction changing element 120 is formed with a recess 121 a that houses the LED 20. The concave portion 121a includes a first light incident surface (bottom surface) 121 b1 on which light emitted from the LED 20 is incident and a second light incident surface (bottom surface) 121 b2 . Further, the light direction changing part 121 includes a light reflecting surface 121c that totally reflects the incident light from the first light incident surface 121 b1, totally reflected laterally by refracting light at the light reflecting surface 121c, diagonally forward and A light exit surface 121d that exits obliquely rearward. The light incident surface 121b, the light reflecting surface 121c, and the light emitting surface 121d are mirror-finished.
第1光入射面121b1とLED20との間には空隙G(G≒0.3mm)が形成される。これにより、光方向変換素子120に外力が加わっても、LED20に力が加わらず、LED20の破損を防ぐことができる。また、第2光入射面121b2にはLED20の側面から出射される光が入射する。これにより、第2光入射面121b2に入射する光(例えば黄色光)が拡散され、色むらを抑制することができる。 A gap G (G≈0.3 mm) is formed between the first light incident surface 121 b 1 and the LED 20. Thereby, even if an external force is applied to the light redirecting element 120, no force is applied to the LED 20, and the LED 20 can be prevented from being damaged. In addition, light emitted from the side surface of the LED 20 is incident on the second light incident surface 121 b2 . Thereby, the light (for example, yellow light) which injects into the 2nd light-incidence surface 121b2 is spread | diffused, and color unevenness can be suppressed.
光反射面121cは、図11に示すように、第1光入射面121b1から到達する光を全反射するように、略円柱体の光出射面12dに向かって漸次広がる漏斗状に形成されている。なお、光反射面121cは、等価的に回転2次曲面、特に回転放物面あるいは回転双曲面の一部としてもよい。また、光反射面121cには、反射効率を高めるために、アルミニウム等の金属膜を形成してもよい。また、光反射面121cにおいて、一部の光が透過してもよい。 As shown in FIG. 11, the light reflecting surface 121c is formed in a funnel shape that gradually spreads toward the light emitting surface 12d of a substantially cylindrical body so as to totally reflect the light reaching the first light incident surface 121b1. Yes. The light reflecting surface 121c may be equivalently a part of a rotating quadratic surface, particularly a rotating paraboloid or rotating hyperboloid. Further, a metal film such as aluminum may be formed on the light reflecting surface 121c in order to increase the reflection efficiency. Further, part of light may be transmitted through the light reflecting surface 121c.
光出射面121dは、図8に示すように、均一の外径を有する円周面で構成されている。なお、光出射面121dは、多角柱(三角柱,四角柱,…)の側面で形成してもよい。また、光出射面121dには、光拡散性をもたせるために、粗面加工を施してもよい。この粗面加工を施す代わりに、光方向変換素子120に光拡散剤を混入しても光拡散性を高めることができる。   As shown in FIG. 8, the light exit surface 121d is configured by a circumferential surface having a uniform outer diameter. In addition, you may form the light-projection surface 121d by the side surface of a polygonal column (a triangular prism, a quadrangular column, ...). In addition, the light exit surface 121d may be roughened to have light diffusibility. The light diffusibility can be improved even if a light diffusing agent is mixed in the light redirecting element 120 instead of the rough surface processing.
(ホルダ片)
ホルダ片123は、回路基板124を保持する段状部123aが設けられている。段状部123aには、図10に示す光方向変換素子120の第2位置決め用ピン122cが挿通される上下方向に開口した2つのピン挿通孔(図示せず)が設けられている。ホルダ片123は、回路基板124を段状部123aに保持した後、光方向変換素子120の第2位置決め用ピン122cをピン挿通孔に挿通させた後、接着剤及び溶着等によって光方向変換素子120に固定される。
(Holder piece)
The holder piece 123 is provided with a stepped portion 123 a that holds the circuit board 124. The stepped portion 123a is provided with two pin insertion holes (not shown) opened in the vertical direction through which the second positioning pins 122c of the light direction changing element 120 shown in FIG. 10 are inserted. After holding the circuit board 124 on the stepped portion 123a, the holder piece 123 is inserted into the pin insertion hole through the second positioning pin 122c of the light direction changing element 120, and then the light direction changing element by an adhesive, welding, or the like. 120 is fixed.
(回路基板)
回路基板124は、図9(a)及び(b)に示すように、LED20の背面に露出するリードと電気的に接続する配線パターン(図示せず)を有し、図9(b)に示すように、ツェナーダイオード等の電子部品125が搭載され、ケーブル14によって他の回路基板124や電源に接続される。また、回路基板124は、光方向変換素子120の第1位置決め用ピン122bが挿通される2つのピン挿通孔(図示せず)が設けられている。
(Circuit board)
As shown in FIGS. 9A and 9B, the circuit board 124 has a wiring pattern (not shown) electrically connected to the lead exposed on the back surface of the LED 20, as shown in FIG. 9B. As described above, an electronic component 125 such as a Zener diode is mounted and connected to another circuit board 124 or a power source by the cable 14. The circuit board 124 is provided with two pin insertion holes (not shown) through which the first positioning pins 122b of the light direction changing element 120 are inserted.
(LED)
図12は、LED20の断面図である。LED20は、白色の樹脂材料から形成され、リフレクタとなる傾斜面21aおよび底面21bからなる凹部21を有するパッケージ22と、凹部21の底面21bから外側に導出してなる一対のリード23A,23Bと、一対のリード23A,23Bの凹部21側の端部に電気的に接続された青色光を発する青色LED素子24と、凹部21に充填され、青色LED素子24から発する青色光で励起されて黄色光を発する蛍光体25を含有する封止樹脂26とを備え、リード23A,23Bによって回路基板124に実装され、青色LED素子24から発する青色光と蛍光体25から発する黄色光との混合に基づいて白色光を出射するように構成されている。
(LED)
FIG. 12 is a cross-sectional view of the LED 20. The LED 20 is formed of a white resin material, and includes a package 22 having a concave portion 21 formed of an inclined surface 21a and a bottom surface 21b serving as a reflector, and a pair of leads 23A and 23B led out from the bottom surface 21b of the concave portion 21; A blue LED element 24 that emits blue light that is electrically connected to the ends of the pair of leads 23A and 23B on the concave portion 21 side, and a yellow light that is filled in the concave portion 21 and excited by the blue light emitted from the blue LED element 24. And a sealing resin 26 containing a phosphor 25 that emits light and is mounted on a circuit board 124 by leads 23A and 23B, and is based on a mixture of blue light emitted from the blue LED element 24 and yellow light emitted from the phosphor 25. It is configured to emit white light.
青色LED素子24は、例えば、発光波長領域を450nm〜460nmとするGaN系半導体化合物からなるLED素子を用いることができる。蛍光体25は、例えば、珪酸塩系の蛍光体や、YAG(Yttrium Aluminum Garnet)蛍光体等のガーネット系蛍光体を用いることができる。   As the blue LED element 24, for example, an LED element made of a GaN-based semiconductor compound having an emission wavelength region of 450 nm to 460 nm can be used. As the phosphor 25, for example, a silicate phosphor or a garnet phosphor such as a YAG (Yttrium Aluminum Garnet) phosphor can be used.
図13(a)、(b)は、それぞれ面状発光装置10の回路例を示す。図13(a)に示す回路例は、同図中Lで示す青色LED素子24に青色LED素子24と極性を逆にしてツェナーダイオードZDを並列に接続し、取付けユニット11を構成する全ての回路基板124をケーブル14によって直列的に接続し、先頭の回路基板124の入力端子124aに定電流電源15Aを接続し、最後尾の回路基板124の出力端子124b間を短絡したものである。この構成によれば、青色LED素子24の順方向電圧(Vf)よりも少し高い電圧で動作するツェナーダイオードを用いることにより、いずれかの青色LED素子24がオープン故障しても、対応するツェナーダイオードに電流が供給され、他の青色LED素子24にも電流が供給されて点灯させることができる。   FIGS. 13A and 13B show circuit examples of the planar light emitting device 10, respectively. In the circuit example shown in FIG. 13A, all the circuits constituting the mounting unit 11 are configured by connecting the zener diode ZD in parallel to the blue LED element 24 indicated by L in the same figure, with the polarity reversed from that of the blue LED element 24. The board 124 is connected in series by the cable 14, the constant current power supply 15 </ b> A is connected to the input terminal 124 a of the first circuit board 124, and the output terminal 124 b of the last circuit board 124 is short-circuited. According to this configuration, by using a Zener diode that operates at a voltage slightly higher than the forward voltage (Vf) of the blue LED element 24, even if any of the blue LED elements 24 has an open failure, the corresponding Zener diode Is supplied with current, and the other blue LED elements 24 are also supplied with current and can be lit.
図13(b)に示す回路例は、並列に接続された抵抗R1、R2の一端に同図中Lで示す青色LED素子24のカソードを接続し、青色LED素子24のアノードと抵抗R1、R2の他端に電圧を供給するように、取付けユニット11を構成する全ての回路基板124をケーブル14によって直列的に接続し、先頭の回路基板124の入力端子124aに直流電源15Bを接続し、最後尾の回路基板124の出力端子124bをオープンにしたものである。この構成によれば、いずれかの青色LED素子24がオープン故障しても、他の青色LED素子24に電圧が印加されて点灯させることができる。   In the circuit example shown in FIG. 13B, the cathode of the blue LED element 24 indicated by L in the figure is connected to one end of resistors R1 and R2 connected in parallel, and the anode of the blue LED element 24 and the resistors R1 and R2 are connected. All the circuit boards 124 constituting the mounting unit 11 are connected in series by the cable 14 so that a voltage is supplied to the other end of the circuit, and the DC power supply 15B is connected to the input terminal 124a of the first circuit board 124. The output terminal 124b of the tail circuit board 124 is opened. According to this configuration, even if one of the blue LED elements 24 fails to open, a voltage can be applied to the other blue LED elements 24 to light them.
(広告看板の動作)
図14は、光源モジュール12から出射される光線を示し、(a)は、光方向変換素子120によって方向が変換された光線を示し、(b)は、広告看板1の内部における光線を示す。
(Operation of advertising billboard)
FIG. 14 shows light rays emitted from the light source module 12, (a) shows the light rays whose direction has been changed by the light direction changing element 120, and (b) shows the light rays inside the advertising billboard 1.
面状発光装置10に電源を供給すると、各光源モジュール12のLED20から白色光を発光し、その白色光は、図14(a)に示すように、光方向変換素子120によって側方、斜め上方、斜め下方に変換されて出射する。光源モジュール12から出射された光は、図14(b)に示すように、斜め前方に出射された光aは、直接広告表示部3に到達し、斜め前方または側方に出射された光bは、筐体2の側面板2cの内面で反射して広告表示部3に到達する。また、斜め後方に出射された光cは、反射板13で反射して広告表示部3に到達し、広告板5の広告内容を表示する。   When power is supplied to the planar light emitting device 10, white light is emitted from the LEDs 20 of each light source module 12, and the white light is laterally and obliquely upward by the light direction conversion element 120 as shown in FIG. The light is converted obliquely downward and emitted. As shown in FIG. 14B, the light a emitted from the light source module 12 reaches the advertisement display unit 3 directly, and the light b emitted diagonally forward or sideward. Is reflected by the inner surface of the side plate 2 c of the housing 2 and reaches the advertisement display unit 3. Further, the light c emitted obliquely rearward is reflected by the reflecting plate 13 and reaches the advertisement display unit 3 to display the advertisement content of the advertisement board 5.
(発光面積の変更)
図15は、発光面積の変更方法を説明するための平面図である。同図は、横11個、縦9個の合計99個の取付け部材(ブロック)110を組み合わせた場合を示す。この場合は、4つの取付けユニット(シート)11を組み合わせる。まず、図6(a)に示したように、左上に位置する取付けユニット11の差込凹部115に、右上に位置する取付けユニット11の差込凸部116を差し込み、左上に位置する取付けユニット11の差込凹部115に左下に位置する取付けユニット11の差込凸部116を差し込み、左下および右上に位置する取付けユニット11の差込凹部115に右下に位置する取付けユニット11の差込凸部116を差し込む。4つの取付けユニット11を組み合わせた後、上端側の10個の取付け部材110を他の取付けユニット11から分離してその差込凹部115に右上および左上の取付けユニット11の差込凸部116を差し込み、左側の8個の取付け部材110を他の取付けユニット11から分離してその差込凹部115に左上および左下の取付けユニット11の差込凸部116を差し込み、左上端の取付け部材110を他の取付けユニット11から分離してその差込凹部115に組合せ済みの取付け部材110の差込凸部116を差し込むことにより、図15に示す取付けユニットの組合せが完了する。
(Change of light emitting area)
FIG. 15 is a plan view for explaining a method of changing the light emitting area. The figure shows a case where a total of 99 attachment members (blocks) 110 of 11 horizontal and 9 vertical are combined. In this case, four attachment units (seats) 11 are combined. First, as shown in FIG. 6A, the insertion convex portion 116 of the mounting unit 11 positioned at the upper right is inserted into the insertion concave portion 115 of the mounting unit 11 positioned at the upper left, and the mounting unit 11 positioned at the upper left. The insertion convex portion 116 of the mounting unit 11 located at the lower left is inserted into the insertion concave portion 115, and the insertion convex portion of the mounting unit 11 located at the lower right is inserted into the insertion concave portion 115 of the mounting unit 11 located at the lower left and upper right. 116 is inserted. After the four mounting units 11 are combined, the ten mounting members 110 on the upper end side are separated from the other mounting units 11, and the insertion convex portions 116 of the upper right and upper left mounting units 11 are inserted into the insertion concave portions 115. The left eight mounting members 110 are separated from the other mounting units 11, and the insertion protrusions 116 of the upper left and lower left mounting units 11 are inserted into the insertion recesses 115. The combination of the mounting units shown in FIG. 15 is completed by separating the mounting unit 11 and inserting the insertion protrusions 116 of the combined mounting member 110 into the insertion recesses 115.
<本実施の形態の面状発光装置の効果>
本実施の形態の面状発光装置10によれば、以下の効果を奏する。
(イ)光源モジュール12を取付け部材110の被嵌合部112に着脱可能に取り付けることができるので、光源モジュール12の取付作業が容易となる。また、ケーブル14を係止部114に簡単に取り付けることができるので、ケーブル14の取付作業が容易となる。この結果、面状発行装置10の組立作業が容易となる。
(ロ)差込凹部115に差込凸部116を差し込んで必要な数の取付けユニット11を用い、あるいは取付け部材110を連結部113から分離して必要な数の取付け部材110を用いることにより、発光面積を任意に変更することができる。
(ハ)光方向変換素子120の光入射面121bに入射した光を側方、斜め前方および斜め後方に変換して出射するので、1つのLED20が照射する範囲が拡大されるので、発光むらの発生を十分に抑制することができる。
<Effect of planar light-emitting device of this embodiment>
According to the planar light-emitting device 10 of this Embodiment, there exist the following effects.
(A) Since the light source module 12 can be detachably attached to the fitted portion 112 of the attachment member 110, the attaching operation of the light source module 12 becomes easy. Further, since the cable 14 can be easily attached to the locking portion 114, the attaching operation of the cable 14 is facilitated. As a result, the assembly work of the sheet issuing device 10 becomes easy.
(B) By inserting the insertion protrusions 116 into the insertion recesses 115 and using the required number of attachment units 11, or by separating the attachment members 110 from the connecting portions 113 and using the required number of attachment members 110, The light emitting area can be arbitrarily changed.
(C) Since the light incident on the light incident surface 121b of the light direction changing element 120 is converted to the side, obliquely forward, and obliquely rearward and emitted, the range irradiated by one LED 20 is expanded. Generation | occurrence | production can fully be suppressed.
なお、本発明は、上記実施の形態に限定されず、発明の趣旨を逸脱しない範囲内で種々に変形実施が可能である。   The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the invention.
例えば、上記実施の形態では、面状発光装置をバックライトとして広告看板に適用した場合について説明したが、液晶テレビ等にも適用することができ、また、面状発光装置自体を画像信号に応じて光源モジュールを点灯または消灯させて画像を表示する画像表示装置として用いてもよい。   For example, in the above embodiment, the case where the planar light emitting device is applied to an advertising billboard as a backlight has been described. However, the present invention can also be applied to a liquid crystal television or the like, and the planar light emitting device itself can be used according to an image signal. The light source module may be turned on or off to display an image.
また、光源モジュールに複数のLED素子を組み込んでもよい。この場合、R、G、Bの3色のLED素子を組み込むことにより、カラーの発光光を得ることができる。   A plurality of LED elements may be incorporated in the light source module. In this case, color light emission can be obtained by incorporating LED elements of three colors of R, G, and B.
本発明の実施の形態に係る面状発光装置を適用した広告看板を示し、(a)は正面図、(b)は(a)のA−A断面図。The advertising billboard which applied the planar light-emitting device concerning an embodiment of the invention is shown, (a) is a front view and (b) is an AA sectional view of (a). 面状発光装置の平面図。The top view of a planar light-emitting device. 図2の状態から反射板を取り除いた状態を示す平面図。The top view which shows the state which removed the reflecting plate from the state of FIG. 面状発光装置の分解斜視図。The disassembled perspective view of a planar light-emitting device. 1組の取付け部材および光源モジュールの平面図。The top view of one set of attachment members and a light source module. (a)は取付け部材の斜視図、(b)は(a)のF−F断面図。(A) is a perspective view of an attachment member, (b) is FF sectional drawing of (a). 図5のB−B断面図。BB sectional drawing of FIG. 図5のC−C断面図。CC sectional drawing of FIG. (a)は、図5のD−D断面図、(b)は、図5のE−E断面図。(A) is DD sectional drawing of FIG. 5, (b) is EE sectional drawing of FIG. 光方向変換素子を示し、(a)は斜視図、(b)は平面図、(c)は下面図である。The light direction change element is shown, (a) is a perspective view, (b) is a plan view, and (c) is a bottom view. 光方向変換素子の断面図。Sectional drawing of a light direction change element. LEDの断面図。Sectional drawing of LED. (a)、(b)は、それぞれ面状発光装置の回路例を示す図。(A), (b) is a figure which shows the circuit example of a planar light-emitting device, respectively. (a)は、光方向変換素子の出射光の様子を示す図、(b)は、面状発光装置の出射光の様子を示す図。(A) is a figure which shows the mode of the emitted light of a light direction change element, (b) is a figure which shows the state of the emitted light of a planar light-emitting device. 取付けユニットの組合せ例を示す平面図。The top view which shows the example of a combination of an attachment unit.
符号の説明Explanation of symbols
1 広告看板
2 筐体
2a 開口
2b 背面板
2c 側面板
3 広告表示部
4 透明板
5 広告板
6 散乱板
7 ねじ
10 面状発光装置
11 取付けユニット
12 光源モジュール
13 反射板
13a 開口
13b 位置決め穴
14 ケーブル
14a 導体
14b 被覆部材
15A 定電流電源
15B 直流電源
20 LED
21 凹部
21a 傾斜面
21b 底面
22 パッケージ
23A,23B リード
24 青色LED素子
25 蛍光体
26 封止樹脂
110 取付け部材
111 開口
112 被嵌合部
112a 凹部
112b 係止片
113 連結部
113a V溝
114 係止部
114a 傾斜面
114b ケーブル保持片
115 差込凹部
116 差込凸部
117 位置決め凸部
118A〜118D ケーブル収容部
119 凹部周辺部
119a 傾斜面
120 光方向変換素子
121 光方向変換部
121a 凹部
121b 光入射面
121b1 第1光入射面
121b2 第2光入射面
121c 光反射面
121d 光出射面
122 ケース部
122a 凹部
122b 第1位置決め用ピン
122c 第2位置決め用ピン
122d 切り欠き
122e 空間部
122f 空間部
122g 凸部
123 ホルダ片
123a 段状部
124 回路基板
124a 入力端子
124b 出力端子
125 電子部品
DESCRIPTION OF SYMBOLS 1 Advertisement billboard 2 Case 2a Opening 2b Back plate 2c Side plate 3 Advertisement display part 4 Transparent plate 5 Advertisement plate 6 Scatter plate 7 Screw 10 Planar light-emitting device 11 Mounting unit 12 Light source module 13 Reflecting plate 13a Opening 13b Positioning hole 14 Cable 14a Conductor 14b Coating member 15A Constant current power supply 15B DC power supply 20 LED
21 Recessed portion 21a Inclined surface 21b Bottom surface 22 Package 23A, 23B Lead 24 Blue LED element 25 Phosphor 26 Sealing resin 110 Mounting member 111 Opening 112 Fit portion 112a Recessed portion 112b Locking piece 113 Connection portion 113a V groove 114 Locking portion 114a Inclined surface 114b Cable holding piece 115 Insertion concave part 116 Insertion convex part 117 Positioning convex part 118A-118D Cable accommodating part 119 Concave peripheral part 119a Inclined surface 120 Light direction conversion element 121 Light direction conversion part 121a Concave part 121b Light incident surface 121 b1 first light incident surface 121 b2 second light incident surface 121c light reflecting surface 121d light emitting surface 122 case portion 122a concave portion 122b first positioning pin 122c second positioning pin 122d notch 122e space portion 122f space portion 122g convex portion 123 Holder 123a stepped portion 124 circuit board 124a input terminal 124b output terminal 125 electronic component

Claims (9)

  1. 複数の光源モジュールが着脱可能に嵌合される複数の被嵌合部を有する複数の取付け部材と、
    1次元状または2次元状に配列された前記複数の取付け部材を前記光源モジュール毎に分離可能に連結する複数の連結部とを備えたことを特徴とする取付けユニット。
    A plurality of attachment members having a plurality of fitted portions into which a plurality of light source modules are detachably fitted;
    A mounting unit comprising: a plurality of connecting portions that connect the plurality of mounting members arranged one-dimensionally or two-dimensionally so as to be separable for each light source module.
  2. 前記複数の取付け部材および前記複数の連結部は、樹脂材料からなり、
    前記複数の連結部は、1〜1.5mmの厚さに形成された請求項1に記載の取付けユニット。
    The plurality of attachment members and the plurality of connecting portions are made of a resin material,
    The mounting unit according to claim 1, wherein the plurality of connecting portions are formed to a thickness of 1 to 1.5 mm.
  3. 前記取付け部材は、前記光源モジュールに接続されたケーブルが係止される係止部を備えた請求項1に記載の取付けユニット。   The mounting unit according to claim 1, wherein the mounting member includes a locking portion that locks a cable connected to the light source module.
  4. 前記複数の取付け部材は、他の取付けユニットに嵌合によって接続するための複数の接続部を備えた請求項1に記載の取付けユニット。   The mounting unit according to claim 1, wherein the plurality of mounting members include a plurality of connection portions for connecting to other mounting units by fitting.
  5. 複数の光源モジュールと、
    前記複数の光源モジュールが着脱可能に嵌合される複数の被嵌合部を有する複数の取付け部材、および1次元状または2次元状に配列された前記複数の取付け部材を前記光源モジュール毎に分離可能に連結する複数の連結部を有する取付けユニットとを備えたことを特徴とする面状発光装置。
    A plurality of light source modules;
    A plurality of attachment members having a plurality of fitted portions into which the plurality of light source modules are detachably fitted, and the plurality of attachment members arranged in a one-dimensional or two-dimensional manner are separated for each light source module. A planar light emitting device comprising: a mounting unit having a plurality of connecting portions that are connected to each other.
  6. 前記光源モジュールは、回路基板と、前記回路基板上に搭載された発光素子と、前記発光素子からの光を底面に入射して側方に出射する光方向変換素子とを備えた請求項5に記載の面状発光装置。   The light source module includes a circuit board, a light emitting element mounted on the circuit board, and a light redirecting element that emits light from the light emitting element to a bottom surface and exits sideways. The planar light emitting device described.
  7. 前記複数の光源モジュールは、ケーブルを介して直列的に接続され、
    前記取付け部材は、前記ケーブルが係止される係止部を備えた請求項5に記載の面状発光装置。
    The plurality of light source modules are connected in series via a cable,
    The planar light-emitting device according to claim 5, wherein the attachment member includes a locking portion for locking the cable.
  8. 前記光源モジュールは、1つ以上のLEDチップを備えた請求項5に記載の面状発光装置。   The planar light emitting device according to claim 5, wherein the light source module includes one or more LED chips.
  9. 回路基板、前記回路基板上に搭載された発光素子、および前記発光素子からの光を底面に入射して側方、斜め前方および斜め後方に出射する光方向変換素子を有する複数の光源モジュールと、
    前記複数の光源モジュールが着脱可能に嵌合される複数の被嵌合部を有する複数の取付け部材、および1次元状または2次元状に配列された前記複数の取付け部材を前記光源モジュール毎に分離可能に連結する複数の連結部を有する取付けユニットと、
    前記複数の光方向変換素子から斜め後方に出射された光を前方に反射する反射面とを備えたことを特徴とする面状発光装置。
    A plurality of light source modules each including a circuit board, a light emitting element mounted on the circuit board, and a light direction changing element that emits light from the light emitting element to a bottom surface, obliquely forward, and obliquely rearward;
    A plurality of attachment members having a plurality of fitted portions into which the plurality of light source modules are detachably fitted, and the plurality of attachment members arranged in a one-dimensional or two-dimensional manner are separated for each light source module. An attachment unit having a plurality of connecting portions to be connected,
    A planar light emitting device, comprising: a reflective surface that reflects forward light obliquely rearward from the plurality of light direction conversion elements.
JP2006346632A 2006-12-22 2006-12-22 Fitting unit and surface light-emitting device Pending JP2008159394A (en)

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JP2014132584A (en) * 2014-02-24 2014-07-17 Sharp Corp Illumination device
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