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WO2012172880A1 - Dispositif d'éclairage électroluminescent organique - Google Patents

Dispositif d'éclairage électroluminescent organique Download PDF

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Publication number
WO2012172880A1
WO2012172880A1 PCT/JP2012/061544 JP2012061544W WO2012172880A1 WO 2012172880 A1 WO2012172880 A1 WO 2012172880A1 JP 2012061544 W JP2012061544 W JP 2012061544W WO 2012172880 A1 WO2012172880 A1 WO 2012172880A1
Authority
WO
WIPO (PCT)
Prior art keywords
organic
panel
light emitting
emitting unit
panels
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2012/061544
Other languages
English (en)
Japanese (ja)
Inventor
泰啓 本多
伸哉 三木
正利 米山
将積　直樹
淳弥 若原
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Konica Minolta Inc
Original Assignee
Konica Minolta Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=47356876&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2012172880(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Konica Minolta Inc filed Critical Konica Minolta Inc
Priority to JP2013520464A priority Critical patent/JP5821955B2/ja
Publication of WO2012172880A1 publication Critical patent/WO2012172880A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-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
    • F21K99/00—Subject matter not provided for in other groups of this subclass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2105/00—Planar light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • F21Y2115/15—Organic light-emitting diodes [OLED]

Definitions

  • the present invention relates to an organic EL lighting device, and more particularly, to an organic EL lighting device including a plurality of organic EL panels arranged in a planar shape.
  • Patent Document 1 a lighting apparatus including a plurality of organic EL (Organic Electro Luminescence) panels as light emitting elements is known.
  • a planar light-emitting portion is formed by arranging a plurality of organic EL panels in a planar shape (including a planar shape and a curved shape).
  • the planar light emitting unit constitutes a so-called surface light source that emits light from the entire surface.
  • surface light sources can produce soft illumination with reduced brightness, making them high-quality applications. Suitable for Moreover, since the lighting fixture provided with such a surface light source can comprise the light emission part thinly, it can also attain space saving.
  • An object of the present invention is to provide an organic EL lighting apparatus including a plurality of organic EL panels arranged in a planar shape, and capable of extending the life of each organic EL panel.
  • the organic EL lighting fixture based on this invention is equipped with the light emission part by which the some organic EL panel was arranged in planar shape, and the degree of the density
  • the interval between the plurality of organic EL panels arranged on the center side in the light emitting unit is wider than the interval between the plurality of organic EL panels arranged on the outer peripheral side in the light emitting unit.
  • the light emitting unit includes an organic EL panel disposition area where the organic EL panel is provided, and an organic EL panel disposition area where the organic EL panel is not disposed, and the organic EL panel disposition area
  • the organic EL panel non-arrangement regions are arranged at the same interval, and are arranged side by side along the matrix direction as a whole.
  • the organic EL panel disposition region and the organic EL panel non-disposition region are arranged in a staggered manner on the center side in the light emitting unit.
  • an organic EL lighting fixture provided with the some organic EL panel arranged in planar shape, Comprising: Obtaining the organic EL lighting fixture which can aim at the lifetime improvement of each organic EL panel can be obtained. It becomes possible.
  • FIG. 2 is a cross-sectional view taken along the line II-II in FIG. It is a top view which shows the temperature distribution in the light emission part at the time of making the organic EL lighting fixture in the comparative example regarding this invention light continuously for a predetermined time. It is a figure which shows the correlation of the temperature of an organic EL panel at the time of operation
  • 1 is a first plan view showing an organic EL lighting fixture in Embodiment 1.
  • FIG. FIG. 3 is a second plan view showing the organic EL lighting device in the first embodiment.
  • FIG. 10 is a plan view showing an organic EL lighting device in a modification of the second embodiment.
  • FIG. 1 is a plan view showing an organic EL lighting apparatus 100 in this comparative example.
  • 2 is a cross-sectional view taken along the line II-II in FIG.
  • an organic EL lighting apparatus 100 includes a light emitting unit 10 configured by arranging a plurality of organic EL panels 1 in a plane and a plurality of organic EL panels 1 on a ceiling (see FIG. 1).
  • a housing 20 for fixing to a wall surface (not shown) or the like, and a drive circuit (not shown) for supplying a current to each of the plurality of organic EL panels 1.
  • a plurality of organic EL panels 1 having substantially the same area are arranged in a so-called matrix of 5 ⁇ 5.
  • a space D1 is provided between adjacent organic EL panels 1 in both the row direction (left and right direction in FIG. 1) and the column direction (up and down direction in FIG. 1).
  • the plurality of organic EL panels 1 are attached to the housing 20. When the plurality of organic EL panels 1 emit light, heat generated in the plurality of organic EL panels 1 is transmitted to the housing 20.
  • the housing 20 functions as a heat radiator for the plurality of organic EL panels 1.
  • the organic EL panel 1 disposed on the outer peripheral side in the light emitting unit 10 has a limited number of organic EL panels disposed on the periphery thereof, and thus is not easily heated due to the heat dissipation action of the housing 20.
  • the periphery of the organic EL panel 1 arranged on the center side in the light emitting unit 10 is surrounded by other organic EL panels 1.
  • the heat dissipation action by the housing 20 on the organic EL panel 1 is such that the organic EL panel 1 arranged on the center side in the light emitting unit 10 is compared with the organic EL panel 1 arranged on the outer peripheral side in the light emitting unit 10. Low.
  • the heat dissipation efficiency in the organic EL panel 1 disposed on the center side in the light emitting unit 10 is further reduced.
  • FIG. 3 is a plan view showing a temperature distribution in the light emitting unit 10 when the organic EL lighting apparatus 100 is continuously turned on for a predetermined time.
  • a difference in heat dissipation efficiency occurs between the plurality of organic EL panels 1. Due to this difference in heat dissipation efficiency, the vicinity of the boundary line Rc between the organic EL panel 1 (1c) located on the most central side in the light emitting unit 10 and the organic EL panel 1 (1b) located on the outer periphery thereof In the case, a temperature rise of, for example, + 15 ° C. occurs with respect to the ambient environmental temperature.
  • a temperature increase of, for example, + 10 ° C. occurs with respect to the ambient environmental temperature.
  • a temperature increase of, for example, + 5 ° C. occurs with respect to the ambient environmental temperature.
  • the heat dissipation efficiency near the organic EL panel 1 (1b) is lower than the heat dissipation efficiency of the organic EL panel 1 (1a), and the heat dissipation efficiency near the organic EL panel 1 (1c) is lower than the organic EL panel 1 (1b).
  • the temperature on the center side of the light emitting unit 10 becomes higher than the temperature on the outer peripheral side of the light emitting unit 10.
  • An organic EL panel is composed of an organic material, and this organic material deteriorates due to various factors. In general, the following correlation exists between the temperature of the organic EL panel during the operation of the organic EL panel and the useful life (time) of the organic EL panel.
  • FIG. 4 is a diagram showing a correlation L10 between the temperature of the organic EL panel during the operation of the organic EL panel and the useful life (time) of the organic EL panel.
  • the lifetime (time) of the organic EL panel in FIG. 4 is reduced to a predetermined luminance (for example, 70% or 50%) as compared with the initial state when a constant current is applied to the organic EL panel. Means the time until.
  • the organic EL panel 1 (1 b) located on the inner side of the organic EL panel 1 (1 a) located on the outermost peripheral side has A temperature increase of + 5 ° C. occurs.
  • the lifetime of the organic EL panel 1 (1b) positioned on the inner side of the organic EL panel 1 (1a) positioned on the outermost peripheral side is 0.8 times as long as the lifetime.
  • the organic EL panel 1 (1c) located on the two inner sides has a temperature increase of + 10 ° C. Arise.
  • the lifetime of the organic EL panel arranged on the center side is shortened.
  • the organic EL lighting apparatus 100 may be configured such that each organic EL panel 1 cannot be easily removed from the housing 20. In this case, although the organic EL panels 1 (1a) and 1 (1b) have not reached the end of their useful life, the overall useful life of the organic EL lighting apparatus 100 is rate-determined by the organic EL panel 1 (1c). As a result, the useful life of the organic EL lighting apparatus 100 is shortened. Even when the organic EL lighting apparatus 100 is configured such that each organic EL panel 1 can be removed from the housing 20, it is necessary to frequently replace only the organic EL panel 1 (1c).
  • FIG. 5 is a first plan view showing the organic EL lighting fixture 101.
  • FIG. 6 is a second plan view showing the organic EL lighting fixture 101.
  • the organic EL lighting apparatus 101 includes a light emitting unit 10 configured by arranging a plurality of organic EL panels 1 in a planar shape, and a plurality of organic EL panels 1 on a ceiling (not shown). Or the housing
  • organic EL panels 1 having substantially the same area are used. Specifically, 16 organic EL panels 1 (1 a) are arranged in a ring shape on the outer peripheral side in the light emitting unit 10. A space D1 is provided between the adjacent organic EL panels 1 (1a) in both the horizontal direction (left and right direction in FIG. 5) and the vertical direction (up and down direction in FIG. 5).
  • the four organic EL panels 1 (1b) are annularly arranged inside the organic EL panel 1 (1a) in the light emitting unit 10.
  • the four organic EL panels 1 (1 a) are located on the center side in the light emitting unit 10.
  • a space D2 is provided between the adjacent organic EL panels 1 (1b) both in the horizontal direction (left and right direction in FIG. 5) and in the vertical direction (up and down direction in FIG. 5). Further, a distance D2 is also provided between the organic EL panel 1 (1b) and the organic EL panel 1 (1a) closest to the organic EL panel 1 (1b).
  • the interval D2 is wider than the interval D1.
  • the plurality of organic EL panels 1 are attached to the housing 20. When the plurality of organic EL panels 1 emit light, heat generated in the plurality of organic EL panels 1 is transmitted to the housing 20.
  • the housing 20 functions as a heat radiator for the plurality of organic EL panels 1.
  • each of the plurality of organic EL panels 1 is arranged as described above, whereby the degree of congestion of the plurality of organic EL panels 1 in light emitting unit 10 ( The density is smaller on the central side in the light emitting unit 10 than on the outer peripheral side in the light emitting unit 10.
  • the light emitting unit 10 is divided into an outer peripheral side light emitting unit 10a and a central side light emitting unit 10b.
  • the area of one organic EL panel 1 is assumed to be (W1 ⁇ W1). If the area of the central light emitting unit 10b is (Wb ⁇ Wb), the area of the outer peripheral light emitting unit 10a is (Wa ⁇ Wa ⁇ Wb ⁇ Wb).
  • the density in the outer peripheral side light emitting unit 10a is expressed by (W1 ⁇ W1) ⁇ 16 sheets / [(Wa ⁇ Wa ⁇ Wb ⁇ Wb)].
  • the density of the central light emitting unit 10b is represented by (W1 ⁇ W1) ⁇ 4 / (Wb ⁇ Wb).
  • Each of the above dimensions is designed so that (the density in the outer peripheral side light emitting part 10a)> (the density in the central side light emitting part 10b) is established.
  • FIG. 7 is a plan view showing a temperature distribution in the light emitting unit 10 when the organic EL lighting fixture 101 is continuously turned on for a predetermined time. As shown in FIG.
  • the heat dissipation efficiency around each organic EL panel 1 (1 b) is improved on the center side in the light emitting unit 10. Since a local temperature rise on the center side in the light emitting unit 10 is suppressed, a substantially uniform temperature distribution is formed as a whole in the region Rd.
  • the lifetime of the organic EL lighting fixture 101 as a whole is not limited by the expiration of the lifetime of some of the organic EL panels 1, and it is not necessary to frequently replace only some of the organic EL panels 1. .
  • FIG. 8 is a plan view showing the organic EL lighting fixture 102.
  • the organic EL lighting fixture 102 includes a light emitting unit 10 configured by arranging a plurality of organic EL panels 1 in a planar shape, and a plurality of organic EL panels 1 on a ceiling (not shown). Or the housing
  • the light emitting unit 10 in the present embodiment includes an organic EL panel placement area A1 where the organic EL panel 1 is provided, and an organic EL panel non-placement area A2 where the organic EL panel 1 is not provided.
  • Each organic EL panel disposition area A1 and each organic EL panel non-disposition area A2 are arranged with a distance D1 between them and arranged side by side along the matrix direction as a whole (in a so-called matrix form).
  • region A2 are arranged in zigzag form.
  • each of the plurality of organic EL panels 1 is arranged as described above, so that the degree of density (density) of the plurality of organic EL panels 1 in the light emitting unit 10 is increased. Compared to the outer peripheral side in 10, the center side in the light emitting unit 10 is smaller.
  • FIG. 8 is a plan view showing a temperature distribution in the light emitting unit 10 when the organic EL lighting apparatus 102 is continuously turned on for a predetermined time.
  • the heat dissipation efficiency around each organic EL panel 1 (1 b) is improved on the center side in the light emitting unit 10. Since a local temperature rise on the center side in the light emitting unit 10 is suppressed, a substantially uniform temperature distribution is formed as a whole in the region Rd.
  • each organic EL panel placement area A1 and each organic EL panel non-placement area A2 are arranged with a distance D1 from each other, and as a whole along the matrix direction. Arranged side by side. According to this configuration, it is possible to improve design and production efficiency, and manufacturing costs can be reduced.
  • the organic EL panel non-arrangement region A2 may be provided only at the center of the light emitting unit 10. In this case, it is also possible to improve the light emission luminance as the lighting device.
  • 1, 1a, 1b, 1c Organic EL panel 10 light emitting part, 10a outer peripheral side light emitting part, 10b central side light emitting part, 20 housing, 100, 101, 102, 102a lighting fixture, A1 organic EL panel installation area, A2 Organic EL panel non-arrangement area.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Planar Illumination Modules (AREA)
  • Electroluminescent Light Sources (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

La présente invention a trait à un dispositif d'éclairage électroluminescent organique (101) qui est équipé d'une unité électroluminescente (10) qui comprend de multiples panneaux électroluminescents organiques disposés de façon plane (1), la densité des panneaux électroluminescents organiques (1) dans l'unité électroluminescente (10) étant plus faible au centre de l'unité électroluminescente (10) que sur la circonférence extérieure de l'unité électroluminescente (10). Ce dispositif d'éclairage électroluminescent organique (101) permet d'augmenter la durée de vie des panneaux électroluminescents organiques (1).
PCT/JP2012/061544 2011-06-14 2012-05-01 Dispositif d'éclairage électroluminescent organique Ceased WO2012172880A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2013520464A JP5821955B2 (ja) 2011-06-14 2012-05-01 有機ｅｌ照明器具

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011-132192 2011-06-14
JP2011132192 2011-06-14

Publications (1)

Publication Number Publication Date
WO2012172880A1 true WO2012172880A1 (fr) 2012-12-20

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ID=47356876

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PCT/JP2012/061544 Ceased WO2012172880A1 (fr) 2011-06-14 2012-05-01 Dispositif d'éclairage électroluminescent organique

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JP (1) JP5821955B2 (fr)
WO (1) WO2012172880A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19522320C1 (de) 1995-06-20 1996-08-22 Joseph E Doumet Verfahren und Vorrichtung zum Abkühlen und Verfestigen von glühendflüssiger Hochofenschlacke

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007059139A (ja) * 2005-08-23 2007-03-08 Casio Comput Co Ltd 光源装置
JP2009146646A (ja) * 2007-12-12 2009-07-02 Nec Lighting Ltd 平面光源ユニットおよびこれを用いた照明装置
JP2010049865A (ja) * 2008-08-20 2010-03-04 Sharp Corp 照明機器
JP2010243540A (ja) * 2009-04-01 2010-10-28 Seiko Epson Corp 電気光学装置及び電子機器

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5029893B2 (ja) * 2007-07-06 2012-09-19 東芝ライテック株式会社 電球形ｌｅｄランプおよび照明装置
JP5210642B2 (ja) * 2008-01-09 2013-06-12 ローム株式会社 有機ｅｌ照明装置
JP5208597B2 (ja) * 2008-07-01 2013-06-12 富士フイルム株式会社 照明装置、撮像装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007059139A (ja) * 2005-08-23 2007-03-08 Casio Comput Co Ltd 光源装置
JP2009146646A (ja) * 2007-12-12 2009-07-02 Nec Lighting Ltd 平面光源ユニットおよびこれを用いた照明装置
JP2010049865A (ja) * 2008-08-20 2010-03-04 Sharp Corp 照明機器
JP2010243540A (ja) * 2009-04-01 2010-10-28 Seiko Epson Corp 電気光学装置及び電子機器

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JPWO2012172880A1 (ja) 2015-02-23
JP5821955B2 (ja) 2015-11-24

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