JP2006107861A - Solar battery module with illumination means - Google Patents

Solar battery module with illumination means Download PDF

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Publication number
JP2006107861A
JP2006107861A JP2004291116A JP2004291116A JP2006107861A JP 2006107861 A JP2006107861 A JP 2006107861A JP 2004291116 A JP2004291116 A JP 2004291116A JP 2004291116 A JP2004291116 A JP 2004291116A JP 2006107861 A JP2006107861 A JP 2006107861A
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guide plate
light
light guide
solar cell
cell module
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Takashi Ito
伊藤　　隆
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MSK CORP
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MSK CORP
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/72—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps in street lighting
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

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  • Road Signs Or Road Markings (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Planar Illumination Modules (AREA)
  • Photovoltaic Devices (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a solar battery module with an illumination means formed by integrating a solar battery module part and an illumination part. <P>SOLUTION: A plurality of sheets of solar battery cells 14 generating power by solar rays are arranged on a base plate 11 through a reflection film 12 and an adhesive agent 13. A light guide plate 15 is laminated on the solar battery cell 14 through the adhesive agent 13, and a light-emitting diode 16 is arranged on one side face of the light guide plate 15 so as to face the light guide plate 15. An output of the solar battery cell 14 is connected to a battery 18 through wires 17, the battery 18 is connected to a control device 19, and the light-emitting device 16 is connected to the control device 19. In the daytime, the fuel battery cell 14 generates power by receiving solar rays through the light guide plate 15 and the adhesive agent 13, and accumulates the power, and when it is judged as night time, the light-emitting diode 16 is lighted and the light is guided to the light guide plate 15. Light incident on the light guide plate 15 is scattered by an indented face on the surface 15a of the light guide plate 15 and emitted outside of the light guide plate 15 while repeating total reflection in the light guide plate 15. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、太陽電池セルによる発電機能と、照明手段として発光する機能を兼ね備えた照明手段付太陽電池モジュールに関するものである。   The present invention relates to a solar cell module with illumination means that has both a power generation function by a solar cell and a function of emitting light as illumination means.

近年、エコエネルギ、環境対策の一環から、例えば図４に示すように街路灯１及び太陽電池モジュール２を設置し、昼間に太陽電池モジュール２により発電した電力を図示しないバッテリに蓄電し、この蓄電した電力により夜間に街路灯１を点灯させている装置が使用されている。   In recent years, as part of eco-energy and environmental measures, for example, as shown in FIG. 4, a street light 1 and a solar cell module 2 are installed, and electric power generated by the solar cell module 2 in the daytime is stored in a battery (not shown). A device that lights up the street lamp 1 at night with the generated electric power is used.

また、図５に示すように、道路標識３の上方に太陽電池モジュール２を設置し、昼間に蓄電した電力により夜間に点滅等する道路標識等が注目されてきている。   Further, as shown in FIG. 5, attention is paid to a road sign or the like in which a solar cell module 2 is installed above the road sign 3 and blinks at night by the electric power stored in the daytime.

一般に、この種の太陽電池モジュール２は、単結晶、多結晶、アモルファスシリコン等から成る太陽電池セルを基板上に配列し、電極、配線等を施し、昼間に得られた電力を図示しないバッテリに蓄電している。そして、夜間には蓄電しておいた電力を用いて、発光ダイオードや電球や蛍光灯等を点灯させたり、点滅させている。   In general, this type of solar cell module 2 is configured by arranging solar cells made of single crystal, polycrystal, amorphous silicon, etc. on a substrate, applying electrodes, wiring, etc., and supplying electric power obtained in the daytime to a battery (not shown). It stores electricity. In the nighttime, light-emitting diodes, light bulbs, fluorescent lamps, and the like are turned on or blinked using the stored electric power.

しかしながら、この種の街路灯や道路標識等は、太陽光により発電する太陽電池モジュール部及び照明部が別々となっており、デザインが制限されたり、太陽電池モジュール部から照明部に配線施工する必要がある。   However, this type of street light, road sign, etc. has a separate solar cell module part and illumination part that generate electricity by sunlight, and the design is restricted or wiring from the solar cell module part to the illumination part is necessary There is.

また、道路標識等においては、文字や図形を点灯、点滅させるためには、その文字や図形の形状に沿ってダイオード等を配列することが必要となる。   Further, in a road sign or the like, it is necessary to arrange a diode or the like along the shape of the character or figure in order to light or blink the character or figure.

本発明の目的は、上述の課題を解決し、自由度の大きなデザインを採用することができると共に、太陽電池モジュール部と照明部を一体化した照明手段付太陽電池モジュールを提供することにある。   The objective of this invention is providing the solar cell module with an illumination means which integrated the solar cell module part and the illumination part while solving the above-mentioned subject and being able to employ | adopt a design with a large freedom degree.

上述の目的を達成するための本発明に係る照明手段付太陽電池モジュールの技術的特徴は、太陽電池セルと、該太陽電池セルに積層し面発光機能を有する導光板と、前記導光板の側面に配置した発光部材と、前記太陽電池セルにより発電した電力を蓄電するバッテリとを有し、該バッテリに蓄電された電力により前記発光部材を発光させ、前記導光板に導き前記導光板を面発光させることにある。   Technical features of the solar battery module with illumination means according to the present invention for achieving the above-described object include a solar battery cell, a light guide plate stacked on the solar battery cell and having a surface light emitting function, and a side surface of the light guide plate. A light-emitting member disposed in the battery and a battery for storing the electric power generated by the solar battery cell, the light-emitting member is caused to emit light by the electric power stored in the battery, led to the light guide plate, and the light guide plate is surface-emitting There is to make it.

本発明に係る照明手段付太陽電池モジュールによれば、太陽電池モジュール部と照明部を一体化することにより、照明部全面を発光させることができ、文字や図形等を容易に表示することができる。   According to the solar cell module with illumination means according to the present invention, by integrating the solar cell module unit and the illumination unit, the entire illumination unit can emit light, and characters, figures, and the like can be easily displayed. .

また、太陽電池モジュール部と照明部を一体化させたことにより、これらを接続するための配線等も少なくて済み、設置作業等が軽減する。   Further, since the solar cell module unit and the illumination unit are integrated, the wiring for connecting them can be reduced, and installation work and the like are reduced.

本発明を図１〜図３に図示の実施例に基づいて説明する。   The present invention will be described based on the embodiment shown in FIGS.

図１は実施例１における照明手段付太陽電池モジュールの断面図、図２は平面図をそれぞれ示しており、ガラス、樹脂板等の基板から成る基板１１上には、反射フィルム１２、ＥＶＡ、ＰＶＢ、シリコン等から成る接着剤１３を介して、太陽光により発電する複数枚の太陽電池セル１４が平面的に配列されている。   FIG. 1 is a cross-sectional view of a solar cell module with illumination means in Example 1, and FIG. 2 is a plan view. On a substrate 11 made of a substrate such as glass or a resin plate, a reflective film 12, EVA, PVB A plurality of solar cells 14 that generate power by sunlight are arranged in a plane via an adhesive 13 made of silicon or the like.

更に、太陽電池セル１４上には導光板１５が積層され、この導光板１５の一側面には複数個の発光ダイオード１６が発光方向を導光板１５に向けて配置されている。なお、この場合の太陽電池セル１４を基板１１と導光板１５を接着する接着剤１３は、太陽光を太陽電池セル１４に導くために透光性を有することが必要である。   Further, a light guide plate 15 is laminated on the solar battery cell 14, and a plurality of light emitting diodes 16 are arranged on one side of the light guide plate 15 with the light emitting direction directed toward the light guide plate 15. In this case, the adhesive 13 for bonding the solar cell 14 to the substrate 11 and the light guide plate 15 needs to have translucency in order to guide sunlight to the solar cell 14.

太陽電池セル１４の出力は電線１７を介してバッテリ１８に接続され、更にバッテリ１８は制御装置１９に接続され、制御装置１９に発光ダイオード１６、昼夜を判別するための光量センサ２０が接続されている。   The output of the solar battery cell 14 is connected to a battery 18 via an electric wire 17, and the battery 18 is further connected to a control device 19. A light emitting diode 16 and a light amount sensor 20 for determining day and night are connected to the control device 19. Yes.

また、基板１１、太陽電池セル１４、導光板１５を積層した端面には、発光ダイオード１６から入射した光がこれらの端面から外部に漏れることを防止するために、発光ダイオード１６側の端面を除いて、図示しない反射フィルムにより周囲が覆われている。   Further, in order to prevent light incident from the light emitting diodes 16 from leaking outside from the end surfaces, the end surfaces on the light emitting diode 16 side are excluded from the end surfaces where the substrate 11, the solar battery cell 14, and the light guide plate 15 are laminated. The periphery is covered with a reflection film (not shown).

なお、導光板１５の表面１５ａには、発光ダイオード１６から入射した光を導光板１５の外部に漏出し易くするために、微細な粗さを持つ凹凸面が設けられている。   The surface 15 a of the light guide plate 15 is provided with an uneven surface having a fine roughness so that light incident from the light emitting diode 16 can easily leak out of the light guide plate 15.

そして、この照明手段付太陽電池モジュールを例えばビルの外壁に取り付けたり、道路の境界線や一時停止ラインに沿って埋設すると、昼間に太陽電池セル１４は導光板１５、接着剤１３を透過した太陽光を受光することにより発電し、電力をバッテリ１８に蓄電する。   And when this solar cell module with illumination means is attached to, for example, the outer wall of a building, or embedded along a road boundary line or a temporary stop line, the solar cell 14 passes through the light guide plate 15 and the adhesive 13 in the daytime. Electric power is generated by receiving light, and the electric power is stored in the battery 18.

そして、光量センサ２０により夜間になったことが判別されると、制御装置１９は発光ダイオード１６を点灯させることにより、導光板１５に光を導光する。導光板１５に入射した光は導光板１５内で全反射を繰り返しながら、導光板１５の表面１５ａに設けた微細な凹凸面により乱散乱し、導光板１５の表面１５ａから外部に出射する。なお、反射フィルム１２は導光板１５に入射した発光ダイオード１６の光を、基板１１側に漏出することなく、導光板１５側に戻すものである。   When the light amount sensor 20 determines that the night has come, the control device 19 turns on the light emitting diode 16 to guide the light to the light guide plate 15. The light incident on the light guide plate 15 is scattered and scattered by the fine uneven surface provided on the surface 15 a of the light guide plate 15 while repeating total reflection in the light guide plate 15, and is emitted to the outside from the surface 15 a of the light guide plate 15. The reflective film 12 returns the light of the light emitting diodes 16 incident on the light guide plate 15 to the light guide plate 15 side without leaking to the substrate 11 side.

このようにして、導光板１５を面発光させることができるが、発光ダイオード１６の近くほど表面１５ａから漏出する光量は大きくなるので、表面１５ａの凹凸分布を調整することによりほぼ均一な面発光を行うことが可能である。   In this way, the light guide plate 15 can be surface-emitted, but since the amount of light leaking from the surface 15a increases as the distance from the light-emitting diode 16 increases, substantially uniform surface light emission is achieved by adjusting the uneven distribution of the surface 15a. Is possible.

また、導光板１５の表面１５ａ上に文字や図形を描くことにより、光がこれらの文字や図形を透過して出射するので、看板、道路標識等に利用することもできる。また、この文字や図形は透光性を有する有色フィルム、有色塗料等を用いて描くことにより、昼間時の太陽電池セル１４への入射光量の低下を抑制することができる。   Further, by drawing letters and figures on the surface 15a of the light guide plate 15, light passes through these letters and figures and is emitted so that it can be used for signs, road signs, and the like. Further, by drawing these characters and figures using a light-transmitting colored film, colored paint, or the like, it is possible to suppress a decrease in the amount of incident light on the solar cells 14 during the daytime.

本実施例においては光量センサ２０を用いて、昼夜を判別したが、光量センサ２０の代りに、太陽電池セル１４による発電量を測定することによって昼夜を判別するようにしてもよい。   In the present embodiment, the light quantity sensor 20 is used to discriminate day and night, but instead of the light quantity sensor 20, day and night may be discriminated by measuring the amount of power generated by the solar cells 14.

実施例１においては、太陽光の入射面と発光ダイオード１６の発光による照明する面は同一面としたが、本実施例２においては図３に示すように、裏面である基板１１側から太陽光を入射させるようにしている。従って、基板１１は透明材料であることが必要であり、反射フィルム１２は太陽電池セル１４と導光板１５との間に導光板１５に向けて介在されている。   In the first embodiment, the incident surface of sunlight and the surface illuminated by the light emission of the light emitting diode 16 are the same surface. However, in this second embodiment, as shown in FIG. Is made incident. Therefore, the substrate 11 needs to be a transparent material, and the reflective film 12 is interposed between the solar battery cell 14 and the light guide plate 15 toward the light guide plate 15.

本実施例２における照明手段付太陽電池モジュールを、例えば建物の外壁、天井に埋め込み、或いは街路灯に吊設し、昼間は太陽光を背面から受光し、夜間に室内等に向けて発光させることができる。   The solar cell module with illumination means in the second embodiment is embedded in, for example, the outer wall or ceiling of a building, or suspended on a street lamp, receives sunlight from the back during the day, and emits light toward the room at night. Can do.

本実施例においては、光量センサ２０により夜間になると自動的に発光ダイオード１６を点灯させたが、更に例えば赤外線センサ等の人感センサと組み合わせて、夜間に人が近付いた場合のみ点灯させることにより、バッテリ１８の蓄電量を節約させることもできる。   In this embodiment, the light emitting diode 16 is automatically turned on at night by the light quantity sensor 20, but is further turned on only when a person approaches at night by combining with a human sensor such as an infrared sensor. In addition, the amount of power stored in the battery 18 can be saved.

また、実施例においては、発光ダイオード１６の光を１方向から導光したが、発光ダイオード１６を導光板１５の周囲に配置し、複数方向から照射すれば、更に均一に導光板１５を発光させることができる。   In the embodiment, the light of the light emitting diode 16 is guided from one direction. However, if the light emitting diode 16 is arranged around the light guide plate 15 and irradiated from a plurality of directions, the light guide plate 15 is made to emit light more uniformly. be able to.

また、導光板１５の凹凸は導光板１５の背面に設けてもよく、或いは導光板１５自体に金属粉等の反射材を混入し、導光板１５の内部において光を散乱させて、面発光させることもできる。この場合には、発光ダイオード１６から離れるにつれ光は減衰し、導光板１５から発光が弱くなるので、面位置における反射材の混合分布を調整することが好ましい。   The unevenness of the light guide plate 15 may be provided on the back surface of the light guide plate 15, or a reflective material such as metal powder is mixed in the light guide plate 15 itself, and light is scattered inside the light guide plate 15 to cause surface emission. You can also. In this case, the light attenuates as the distance from the light-emitting diode 16 decreases, and the light emission from the light guide plate 15 becomes weak. Therefore, it is preferable to adjust the mixing distribution of the reflecting material at the surface position.

実施例１の照明手段付太陽電池モジュールの断面図である。It is sectional drawing of the solar cell module with an illumination means of Example 1. FIG. 平面図である。It is a top view. 実施例２の照明手段付太陽電池モジュールの断面図である。It is sectional drawing of the solar cell module with an illumination means of Example 2. 太陽電池モジュールを用いた街路灯の概略図である。It is the schematic of the street lamp using a solar cell module. 太陽電池モジュールを用いた道路標識の概略図である。It is the schematic of the road sign using a solar cell module.

符号の説明Explanation of symbols

１１ 基板
１２ 反射フィルム
１３ 接着剤
１４ 太陽電池セル
１５ 導光板
１６ 発光ダイオード
１７ 電線
１８ バッテリ
１９ 制御装置
２０ 光量センサ DESCRIPTION OF SYMBOLS 11 Board | substrate 12 Reflective film 13 Adhesive 14 Solar cell 15 Light guide plate 16 Light emitting diode 17 Electric wire 18 Battery 19 Control apparatus 20 Light quantity sensor

Claims (6)

太陽電池セルと、該太陽電池セルに積層し面発光機能を有する導光板と、前記導光板の側面に配置した発光部材と、前記太陽電池セルにより発電した電力を蓄電するバッテリとを有し、該バッテリに蓄電された電力により前記発光部材を発光させ、前記導光板に導き前記導光板を面発光させることを特徴とする照明手段付太陽電池モジュール。   A solar cell, a light guide plate laminated on the solar cell and having a surface light emitting function, a light emitting member disposed on a side surface of the light guide plate, and a battery for storing electric power generated by the solar cell, A solar cell module with illuminating means, wherein the light emitting member is caused to emit light by the electric power stored in the battery and is guided to the light guide plate to cause the light guide plate to emit light. 前記導光板に微細な凹凸面を設けたことを特徴とする請求項１に記載の照明手段付太陽電池モジュール。   The solar cell module with illuminating means according to claim 1, wherein the light guide plate is provided with a fine uneven surface. 前記導光板の裏面に反射部材を配置したことを特徴とする請求項１又は２に記載の照明手段付太陽電池モジュール。   The solar cell module with illumination means according to claim 1 or 2, wherein a reflecting member is disposed on a back surface of the light guide plate. 光量センサを設け前記発光部材を夜間にのみ発光させるようにしたことを特徴とする請求項１〜３の何れか１つの請求項に記載の照明手段付太陽電池モジュール。   The solar cell module with illumination means according to any one of claims 1 to 3, wherein a light quantity sensor is provided so that the light emitting member emits light only at night. 前記発光部材は発光ダイオードとしたことを特徴とする請求項１〜４の何れか１つの請求項に記載の照明手段付太陽電池モジュール。   The solar cell module with illumination means according to any one of claims 1 to 4, wherein the light emitting member is a light emitting diode. 前記導光板上に画像を描いたことを特徴とする請求項１〜５の何れか１つの請求項に記載の照明手段付太陽電池モジュール。   The solar cell module with illumination means according to any one of claims 1 to 5, wherein an image is drawn on the light guide plate.
JP2004291116A 2004-10-04 2004-10-04 Solar battery module with illumination means Pending JP2006107861A (en)

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JP2010067832A (en) * 2008-09-11 2010-03-25 Sharp Corp Light emitting module
JP2010213388A (en) * 2009-03-06 2010-09-24 Sanyo Electric Co Ltd Solar curtain and power generation element unit
WO2011001518A1 (en) * 2009-06-30 2011-01-06 パナソニック電工株式会社 Illuminating apparatus
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