JP5163604B2 - Lighting system - Google Patents

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JP5163604B2
JP5163604B2 JP2009161122A JP2009161122A JP5163604B2 JP 5163604 B2 JP5163604 B2 JP 5163604B2 JP 2009161122 A JP2009161122 A JP 2009161122A JP 2009161122 A JP2009161122 A JP 2009161122A JP 5163604 B2 JP5163604 B2 JP 5163604B2
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直士 西村
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Hotalux Ltd
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NEC Lighting Ltd
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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
    • Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
    • 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
    • Y02E10/549—Organic PV cells

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Description

本発明は、有機ＥＬパネルを光源として備えた点灯システムに関する。   The present invention relates to a lighting system including an organic EL panel as a light source.

特許文献１には、有機ＥＬ（Electro Luminescence）からなる画素を備えた表示装置が開示されている。この表示装置では、非発光状態にある画素が、受光した太陽光を電気エネルギーに変換させて、該電気エネルギーを表示装置の充電に用いるようになっている。   Patent Document 1 discloses a display device including pixels made of organic EL (Electro Luminescence). In this display device, pixels in a non-light emitting state convert received sunlight into electrical energy, and use the electrical energy for charging the display device.

特開２００７−１０８６１２号公報JP 2007-108612 A

ところで特許文献１には、有機ＥＬが発した光によって充電することを可能にする構成は、なんら開示されていない。このため、特許文献１では、有機ＥＬが発する光を充電のために有効利用して、省エネを図るといったことは実現できない。   Incidentally, Patent Document 1 does not disclose any configuration that enables charging by light emitted from the organic EL. For this reason, in patent document 1, it cannot implement | achieve energy-saving by using effectively the light which organic EL emits for charge.

本発明はこうした状況に鑑みてなされたものであり、本発明の目的は、有機ＥＬパネルを光源として備えた点灯システムであって、有機ＥＬパネルから発せられる光を充電に有効利用することで、省エネが図られる点灯システムを提供することにある。   The present invention has been made in view of such a situation, and an object of the present invention is a lighting system provided with an organic EL panel as a light source, and by effectively using light emitted from the organic EL panel for charging, It is to provide a lighting system that can save energy.

上記目的を達成するため、本発明に係る点灯システムは、電圧の印加を受けて発光するとともに、受光した光を光電変換することで電気エネルギーを生じさせる複数の有機ＥＬパネルと、各前記有機ＥＬパネルに電圧を印加可能であるとともに、各前記有機ＥＬパネルが生じた電気エネルギーにより充電を行う電源とを備え、各前記有機ＥＬパネルは、他の前記有機ＥＬパネルが発した光を受光可能であるように、他の前記有機ＥＬパネルと隣接して配置されていることを特徴とする。   In order to achieve the above object, a lighting system according to the present invention emits light upon application of a voltage, and generates a plurality of organic EL panels that generate electric energy by photoelectrically converting the received light, and each of the organic EL panels. A voltage can be applied to the panel, and a power source for charging by the electric energy generated by each organic EL panel is provided. Each organic EL panel can receive light emitted by the other organic EL panels. As it is, it is arranged adjacent to the other organic EL panel.

本発明によれば、点灯システムに設けられる各有機ＥＬパネルが、他の有機ＥＬパネルが発した光を受光可能であるように、他の有機ＥＬパネルと隣接して配置されていることから、電源から電圧の印加を受けた一の有機ＥＬパネルが発する光を、他の有機ＥＬパネルに受光させて電気エネルギーを生じさせることができる。そして、この電気エネルギーが電源の充電に用いられることで、有機ＥＬパネルが発する光を、充電のために有効利用することができる。これにより、省エネが図られる。   According to the present invention, each organic EL panel provided in the lighting system is disposed adjacent to another organic EL panel so that it can receive light emitted from the other organic EL panel. Light emitted from one organic EL panel that receives voltage from a power source can be received by another organic EL panel to generate electrical energy. And this electrical energy is used for charge of a power supply, The light which an organic EL panel emits can be used effectively for charge. Thereby, energy saving is achieved.

本発明の実施の形態における点灯システムを示すブロック図である。It is a block diagram which shows the lighting system in embodiment of this invention. 有機ＥＬパネルの構造を示す概略断面図である。It is a schematic sectional drawing which shows the structure of an organic electroluminescent panel.

以下、本発明の実施の形態について図を参照しながら詳細に説明する。なお、図中同一または相当部分には同一符号を付し、その説明は繰り返さない。図１は、本発明の実施の形態における点灯システム１を示すブロック図である。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals, and description thereof will not be repeated. FIG. 1 is a block diagram showing a lighting system 1 according to an embodiment of the present invention.

点灯システム１は、光源としての４つの有機ＥＬパネル１０Ａ，１０Ｂ，１０Ｃ，１０Ｄと、これら有機ＥＬパネル１０Ａ，１０Ｂ，１０Ｃ，１０Ｄと配線２０を介して接続される電源３０とを備えており、有機ＥＬパネル１０Ａ，１０Ｂ，１０Ｃ，１０Ｄは、２つずつの組（１０Ａと１０Ｂの組、１０Ｃと１０Ｄの組）に分けられて、これらの組が電源３０と並列に接続されている。なお、以下では、有機ＥＬパネル１０Ａ，１０Ｂ，１０Ｃ，１０Ｄを総称して、有機ＥＬパネル１０と適宜記す。   The lighting system 1 includes four organic EL panels 10A, 10B, 10C, and 10D as light sources, and a power source 30 that is connected to the organic EL panels 10A, 10B, 10C, and 10D via the wiring 20, The organic EL panels 10 </ b> A, 10 </ b> B, 10 </ b> C, and 10 </ b> D are divided into two sets (a set of 10 </ b> A and 10 </ b> B), and these sets are connected in parallel with the power supply 30. Hereinafter, the organic EL panels 10A, 10B, 10C, and 10D are collectively referred to as the organic EL panel 10 as appropriate.

図２は、有機ＥＬパネル１０の構造を示す概略断面図である。   FIG. 2 is a schematic cross-sectional view showing the structure of the organic EL panel 10.

有機ＥＬパネル１０は、例えばガラスからなる透光性の基板１１の上に、陰極１２と、有機ＥＬ層１３と、陽極１４とを順に積層した構造を有している。   The organic EL panel 10 has a structure in which a cathode 12, an organic EL layer 13, and an anode 14 are sequentially laminated on a light-transmitting substrate 11 made of glass, for example.

有機ＥＬ層１３は、陰極１２側に配置される電子輸送層１３０と、陽極１４側に配置される正孔輸送層１３１と、電子輸送層１３０と正孔輸送層１３１との間に配置される発光層１３２とを有している。電子輸送層１３０は、電子輸送性の有機化合物から構成され、正孔輸送層１３１は、正孔輸送性の有機化合物から構成されている。また、発光層１３２は、有機発光性化合物から構成されており、他の光源が発した光を受光することで、光電変換により電気エネルギーを生じる。   The organic EL layer 13 is disposed between the electron transport layer 130 disposed on the cathode 12 side, the hole transport layer 131 disposed on the anode 14 side, and the electron transport layer 130 and the hole transport layer 131. A light emitting layer 132. The electron transport layer 130 is composed of an electron transporting organic compound, and the hole transport layer 131 is composed of a hole transporting organic compound. The light emitting layer 132 is made of an organic light emitting compound, and receives light emitted from another light source to generate electric energy by photoelectric conversion.

上記の構成を有する有機ＥＬパネル１０では、陰極１２と陽極１４との間に、直流電圧が印加されることにより、陰極１２から電子輸送層１３０を介して発光層１３２に電子が注入され、陽極１４から正孔輸送層１３１を介して発光層１３２に正孔が注入される。この結果、発光層１３２では、正孔と電子との結合が生じ、これに伴って生成される励起子が励起状態から基底状態へ移行することで発光現象が生じる。   In the organic EL panel 10 having the above configuration, when a DC voltage is applied between the cathode 12 and the anode 14, electrons are injected from the cathode 12 into the light emitting layer 132 through the electron transport layer 130, and the anode Holes are injected from 14 into the light emitting layer 132 through the hole transport layer 131. As a result, in the light-emitting layer 132, a combination of holes and electrons is generated, and excitons generated thereby shift from the excited state to the ground state to cause a light emission phenomenon.

そして、有機ＥＬパネル１０は、他の有機ＥＬパネル１０が発した光を受光可能であるように、他の有機ＥＬパネル１０と隣接して配置されている。   And the organic EL panel 10 is arrange | positioned adjacent to the other organic EL panel 10 so that the light which the other organic EL panel 10 emitted can be received.

電源３０には、制御部３１と、電圧印加部３２と、充電部３３とが設けられている。   The power supply 30 is provided with a control unit 31, a voltage application unit 32, and a charging unit 33.

制御部３１は、配線２０を介して電圧印加部３２や充電部３３に接続させる有機ＥＬパネル１０を切り換えることができる。   The control unit 31 can switch the organic EL panel 10 connected to the voltage application unit 32 and the charging unit 33 via the wiring 20.

電圧印加部３２は、これと接続された有機ＥＬパネル１０における陰極１２と陽極１４との間に、直流電圧を印加する。   The voltage application unit 32 applies a DC voltage between the cathode 12 and the anode 14 in the organic EL panel 10 connected thereto.

充電部３３は、これと接続された有機ＥＬパネル１０の発光層１３２が発した電気エネルギーにより充電を行う。   The charging unit 33 performs charging with electric energy emitted from the light emitting layer 132 of the organic EL panel 10 connected thereto.

例えば、制御部３１により、有機ＥＬパネル１０Ｂ，１０Ｄが電圧印加部３２に接続され、有機ＥＬパネル１０Ａ，１０Ｃが充電部３３に接続されている場合には、有機ＥＬパネル１０Ｂ，１０Ｄでは、陰極１２と陽極１４との間に電圧印加部３２から直流電圧が印加されることで、それぞれの発光層１３２が光を発する。   For example, when the organic EL panels 10B and 10D are connected to the voltage application unit 32 and the organic EL panels 10A and 10C are connected to the charging unit 33 by the control unit 31, the organic EL panels 10B and 10D When a DC voltage is applied from the voltage application unit 32 between the anode 12 and the anode 14, each light emitting layer 132 emits light.

そして、有機ＥＬパネル１０Ａ，１０Ｃは、有機ＥＬパネル１０Ｂ，１０Ｄと隣接して配置されていることで、有機ＥＬパネル１０Ｂ，１０Ｄが発した光を受光する。この結果、有機ＥＬパネル１０Ａ，１０Ｃの発光層１３２では、光電変換によって電気エネルギーが生じ、この電気エネルギーが充電部３３に送出される。この結果、充電部３３において充電が行われる。   The organic EL panels 10A and 10C are disposed adjacent to the organic EL panels 10B and 10D, thereby receiving light emitted from the organic EL panels 10B and 10D. As a result, in the light emitting layer 132 of the organic EL panels 10 </ b> A and 10 </ b> C, electric energy is generated by photoelectric conversion, and this electric energy is sent to the charging unit 33. As a result, charging is performed in the charging unit 33.

本実施の形態によれば、点灯システム１に設けられる複数の有機ＥＬパネル１０が、隣接して配置されていることから、電源３０から電圧の印加を受けた一の有機ＥＬパネル１０が発する光を、他の有機ＥＬパネル１０に受光させて電気エネルギーを生じさせることができる。そして、この電気エネルギーが電源３０の充電に用いられることで、有機ＥＬパネル１０が発する光を充電のために有効利用することができる。これにより、省エネが図られる。   According to the present embodiment, since the plurality of organic EL panels 10 provided in the lighting system 1 are arranged adjacent to each other, the light emitted from the one organic EL panel 10 that has received voltage application from the power supply 30. Can be received by another organic EL panel 10 to generate electrical energy. And when this electrical energy is used for charge of the power supply 30, the light which the organic EL panel 10 emits can be used effectively for charge. Thereby, energy saving is achieved.

また、制御部３１が、電圧印加部３２や充電部３３に接続させる有機ＥＬパネル１０を切り換えることで、発光や受光を行わせる有機ＥＬパネル１０の数を調整することができる。これにより、点灯システム１から発させられる光を所望の明るさに調整したり、充電に用いる光の量を調整することができる。   Moreover, the control part 31 can adjust the number of the organic EL panels 10 which perform light emission and light reception by switching the organic EL panel 10 connected to the voltage application part 32 or the charging part 33. FIG. Thereby, the light emitted from the lighting system 1 can be adjusted to a desired brightness, and the amount of light used for charging can be adjusted.

本発明は、上述の実施の形態に限定されず、特許請求の範囲において種々改変することができ、例えば、点灯システム１に設けられる有機ＥＬパネル１０の数は、図に示した４つに限定されず、任意の複数に設定可能である。   The present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the claims. For example, the number of organic EL panels 10 provided in the lighting system 1 is limited to the four shown in the figure. It can be set to any plural number.

その他、本発明の好適な変形として、以下の構成が含まれる。   Other suitable modifications of the present invention include the following configurations.

本発明に係る点灯システムについて、好ましくは、前記電源には、制御部と、電圧印加部と、充電部とが設けられ、前記制御部は、前記電圧印加部及び前記充電部に接続させる前記有機ＥＬパネルを切り換えることができ、前記電圧印加部は、これと接続された前記有機ＥＬパネルに対して電圧を印加し、前記充電部は、これと接続された前記有機ＥＬパネルが発した電気エネルギーによって充電を行うことを特徴とする。   In the lighting system according to the present invention, preferably, the power source includes a control unit, a voltage application unit, and a charging unit, and the control unit is connected to the voltage application unit and the charging unit. The EL panel can be switched, the voltage application unit applies a voltage to the organic EL panel connected to the voltage application unit, and the charging unit generates electrical energy generated by the organic EL panel connected to the organic EL panel. It is characterized by charging by.

また、あるいはさらに、各前記有機ＥＬパネルは、透光性の基板の上に、陰極と、有機ＥＬ層と、陽極とを順に積層した構造を有し、前記有機ＥＬ層は、前記陰極側に配置される電子輸送層と、前記陽極側に配置される正孔輸送層と、前記電子輸送層と前記正孔輸送層との間に配置される発光層とを有し、前記陽極と前記陰極との間に電圧が印加されることに応じて、前記陰極から前記電子輸送層を介して前記発光層に電子が注入されるとともに、前記陽極から前記正孔輸送層を介して前記発光層に正孔が注入され、前記発光層は、前記電子及び正孔が結合することで発光するとともに、他の光源が発した光を受光することで光電変換により電気エネルギーを生じさせ、前記電源は、前記陰極と前記陽極との間に電圧を印加するとともに、前記発光層が生じた電気エネルギーによって充電を行うことを特徴とする。   In addition, each of the organic EL panels has a structure in which a cathode, an organic EL layer, and an anode are sequentially laminated on a translucent substrate, and the organic EL layer is disposed on the cathode side. An anode transport layer, an electron transport layer disposed on the anode side, a light emitting layer disposed between the electron transport layer and the hole transport layer, and the anode and the cathode Are applied to the light emitting layer through the electron transport layer from the cathode and from the anode to the light emitting layer through the hole transport layer. Holes are injected, and the light-emitting layer emits light by combining the electrons and holes, and generates electric energy by photoelectric conversion by receiving light emitted from another light source. A voltage is applied between the cathode and the anode, and the front By electrical energy emitting layer occurs and performing charging.

１ 点灯システム
１０Ａ，１０Ｂ，１０Ｃ，１０Ｄ 有機ＥＬパネル
１１ 基板
１２ 陰極
１３ 有機ＥＬ層
１４ 陽極
２０ 配線
３０ 電源
３１ 制御部
３２ 電圧印加部
３３ 充電部
１３０ 電子輸送層
１３１ 正孔輸送層
１３２ 発光層 DESCRIPTION OF SYMBOLS 1 Lighting system 10A, 10B, 10C, 10D Organic EL panel 11 Substrate 12 Cathode 13 Organic EL layer 14 Anode 20 Wiring 30 Power supply 31 Control part 32 Voltage application part 33 Charging part 130 Electron transport layer 131 Hole transport layer 132 Light emitting layer

Claims (3)

電圧の印加を受けて発光するとともに、受光した光を光電変換することで電気エネルギーを生じさせる複数の有機ＥＬパネルと、
各前記有機ＥＬパネルに電圧を印加可能であるとともに、各前記有機ＥＬパネルが生じた電気エネルギーにより充電を行う電源とを備え、
各前記有機ＥＬパネルは、他の前記有機ＥＬパネルが発した光を受光可能であるように、他の前記有機ＥＬパネルと隣接して配置されていることを特徴とする点灯システム。 A plurality of organic EL panels that emit light upon application of a voltage and generate electrical energy by photoelectrically converting the received light; and
A voltage can be applied to each of the organic EL panels, and a power source for charging with the electric energy generated by each of the organic EL panels is provided.
Each of the organic EL panels is disposed adjacent to the other organic EL panels so as to receive light emitted from the other organic EL panels. 前記電源には、制御部と、電圧印加部と、充電部とが設けられ、
前記制御部は、前記電圧印加部及び前記充電部に接続させる前記有機ＥＬパネルを切り換えることができ、
前記電圧印加部は、これと接続された前記有機ＥＬパネルに対して電圧を印加し、
前記充電部は、これと接続された前記有機ＥＬパネルが発した電気エネルギーによって充電を行うことを特徴とする請求項１に記載の点灯システム。 The power source includes a control unit, a voltage application unit, and a charging unit,
The control unit can switch the organic EL panel to be connected to the voltage application unit and the charging unit,
The voltage application unit applies a voltage to the organic EL panel connected thereto,
The lighting system according to claim 1, wherein the charging unit performs charging by electric energy emitted from the organic EL panel connected thereto. 各前記有機ＥＬパネルは、透光性の基板の上に、陰極と、有機ＥＬ層と、陽極とを順に積層した構造を有し、
前記有機ＥＬ層は、前記陰極側に配置される電子輸送層と、前記陽極側に配置される正孔輸送層と、前記電子輸送層と前記正孔輸送層との間に配置される発光層とを有し、前記陽極と前記陰極との間に電圧が印加されることに応じて、前記陰極から前記電子輸送層を介して前記発光層に電子が注入されるとともに、前記陽極から前記正孔輸送層を介して前記発光層に正孔が注入され、
前記発光層は、前記電子及び正孔が結合することで発光するとともに、他の光源が発した光を受光することで光電変換により電気エネルギーを生じさせ、
前記電源は、前記陰極と前記陽極との間に電圧を印加するとともに、前記発光層が生じた電気エネルギーによって充電を行うことを特徴とする請求項１又は２に記載の点灯システム。 Each of the organic EL panels has a structure in which a cathode, an organic EL layer, and an anode are sequentially laminated on a translucent substrate,
The organic EL layer includes an electron transport layer disposed on the cathode side, a hole transport layer disposed on the anode side, and a light emitting layer disposed between the electron transport layer and the hole transport layer. In response to a voltage applied between the anode and the cathode, electrons are injected from the cathode into the light emitting layer through the electron transport layer, and from the anode to the positive electrode. Holes are injected into the light emitting layer through the hole transport layer,
The light-emitting layer emits light by combining the electrons and holes, and generates electrical energy by photoelectric conversion by receiving light emitted by another light source,
3. The lighting system according to claim 1, wherein the power source applies a voltage between the cathode and the anode, and performs charging by electric energy generated by the light emitting layer. 4.
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