JP2011165489A - Organic el lighting system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an organic EL lighting system capable of efficiently protecting an organic EL element and radiating heat therefrom. <P>SOLUTION: The organic EL lighting system includes an organic EL panel 10 which consists of the organic EL element 11, an organic EL panel substrate 1 and an organic EL panel sealing substrate 2, wherein a box substrate 4 in a boxy shape having wall faces covering the side faces of the organic EL panel 10 is provided for storing the organic EL panel 10. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an organic EL lighting device.

  In the organic EL lighting device, for example, as disclosed in Patent Document 1 below, a thermally conductive elastic member having a predetermined elastic force is disposed between the organic EL element and the heat radiating plate. For this reason, even if force is applied to the heat radiating plate from the outside, the heat conductive elastic body absorbs the shock and vibration at that time, and the organic EL element is protected. This prevents problems such as breakage of the organic EL element. Moreover, each organic EL element is arrange | positioned on a heat sink via a heat conductive elastic member, and makes each organic EL element light-emit uniformly by preventing that an organic EL element strikes against a heat sink. Yes.

JP 2006-324199 A

  However, in the conventional organic EL lighting device as disclosed in Patent Document 1 described above, a protective cover for protecting the organic EL element and a heat sink for radiating the heat of the organic EL element are separately provided. The protection and heat dissipation of the organic EL element are separately addressed. For this reason, in the conventional organic EL lighting device, since the protective cover does not consider heat dissipation, the heat of the organic EL element cannot be efficiently radiated in the protective cover.

  In light of the above, an object of the present invention is to provide an organic EL lighting device that can efficiently protect and dissipate heat from an organic EL element.

The organic EL lighting device according to the first invention for solving the above-described problems is
In an organic EL lighting device including an organic EL panel composed of an organic EL element, an organic EL panel substrate, and an organic EL panel sealing substrate,
The organic EL panel is housed inside and includes a box-shaped box-shaped substrate having a wall surface that covers a side surface of the organic EL panel.

An organic EL lighting device according to a second invention for solving the above problem is the organic EL lighting device according to the first invention.
The box-type substrate has an insulating film that insulates electricity on the surface of the box-type substrate, and a conduction portion that conducts electricity on the inner surface of the box-type substrate.
The organic EL panel is supplied with electric power in the conduction part.

An organic EL lighting device according to a third invention for solving the above problem is the organic EL lighting device according to the second invention or the third invention.
An auxiliary heat equalizing plate is provided between the bottom surface of the organic EL panel and the box-type substrate to make the heat in the organic EL panel surface uniform.

An organic EL lighting device according to a fourth aspect of the present invention for solving the above problems is the organic EL lighting device according to the third aspect of the present invention.
A plurality of the organic EL panels are installed in the box-type substrate.

An organic EL lighting device according to a fifth aspect of the present invention for solving the above problem is the organic EL lighting device according to the fourth aspect of the present invention.
The auxiliary heat equalizing plates of the plurality of the organic EL panels installed are integrally formed.

An organic EL lighting device according to a sixth aspect of the present invention for solving the above problem is the organic EL lighting device according to any one of the first to fifth aspects of the invention,
A frame is provided around the organic EL panel substrate.

An organic EL lighting device according to a seventh invention for solving the above problem is the organic EL lighting device according to the sixth invention,
A claw is formed on the frame, a groove is formed on the inner surface of the wall surface of the box-type substrate, and the claw is fitted into the groove when the frame is attached to the organic EL panel substrate. And

An organic EL lighting device according to an eighth invention for solving the above-described problems is the organic EL lighting device according to any one of the first invention to the seventh invention,
An insulating layer is formed inside the box-type substrate.

  ADVANTAGE OF THE INVENTION According to this invention, the organic electroluminescent illuminating device which can perform protection and heat dissipation of an organic electroluminescent element efficiently can be provided.

It is sectional drawing of the organic electroluminescent illuminating device which concerns on the 1st Example of this invention. 1 is a perspective view of an organic EL lighting device according to a first embodiment of the present invention. It is sectional drawing of the organic electroluminescent illuminating device which concerns on the 2nd Example of this invention. It is sectional drawing of the organic electroluminescent illuminating device which concerns on the 3rd Example of this invention. It is sectional drawing of the organic electroluminescent illuminating device which concerns on the 4th Example of this invention. It is sectional drawing of the organic electroluminescent illuminating device which concerns on the 5th Example of this invention. It is sectional drawing of the organic electroluminescent illuminating device which concerns on the 6th Example of this invention. It is a perspective view of the organic electroluminescent illuminating device which concerns on the 7th Example of this invention. It is sectional drawing of the organic electroluminescent illuminating device which concerns on the 8th Example of this invention. It is sectional drawing of the organic electroluminescent illuminating device which concerns on the 9th Example of this invention. It is sectional drawing of the organic electroluminescent illuminating device which concerns on the 10th Example of this invention. It is sectional drawing of the organic electroluminescent illuminating device which concerns on the 11th Example of this invention. It is sectional drawing of the organic electroluminescent illuminating device which concerns on the 12th Example of this invention. It is sectional drawing of the organic electroluminescent illuminating device which concerns on the 13th Example of this invention.

  Hereinafter, an organic EL lighting device according to the present invention will be described with reference to the drawings.

Hereinafter, a first example of the organic EL lighting device according to the present invention will be described.
FIG. 1 is a sectional view of an organic EL lighting device according to a first embodiment of the present invention. FIG. 2 is a perspective view of the organic EL lighting device according to the first embodiment of the present invention.
As shown in FIGS. 1 and 2, the organic EL lighting device according to the present embodiment includes an organic EL element 11, a glass material organic EL panel substrate 1 on which the organic EL element 11 is formed, and an organic EL panel substrate. 1 is provided with an organic EL panel 10 composed of an organic EL panel sealing substrate 2 made of a glass material for sealing the organic EL element 11 formed thereon. Further, the organic EL lighting device according to the present embodiment includes an electrode 6 for supplying power to the organic EL panel 10.

  In this embodiment, as an example, a 150 mm square, 0.7 mm thick organic EL panel substrate 1 and a 144 mm square, 0.7 mm thick organic EL panel sealing substrate 2 are used. However, the size and thickness of the organic EL panel substrate 1 and the organic EL panel sealing substrate 2 are not limited thereto, and other sizes and thicknesses may be used. In the present embodiment, the electrode 6 can be a lead wire or a flat wire.

  A transparent electrode 8 is provided on the organic EL panel substrate 1, and the transparent electrode 8 is electrically connected to the electrode 6 through a conductive material 7. In the present embodiment, solder is used for the conductive material 7, but any other material that can obtain electrical continuity may be used. A film (ACF) or the like may be used.

  In addition, the organic EL lighting device according to the present embodiment includes a box-shaped box-shaped substrate 4 having a wall surface covering the side surface of the organic EL panel 10. In this embodiment, as an example, the box substrate 4 having an inner dimension of 152 mm and a thickness of 0.5 mm was used. However, the inner dimension and thickness of the box substrate 4 are not limited to this, Other internal dimensions and thicknesses may be used. Moreover, although the box-type board | substrate 4 was made from aluminum, it is good also as using materials with high heat conductivity, such as iron and copper, besides this. In addition, as shown in FIG. 2, a cutout portion 4 c for wiring is formed on the side surface of the box-type substrate 4.

  A space between the organic EL panel 10 and the box-type substrate 4 is filled with an adhesive 3. In this embodiment, as an example, the adhesive 3 is made of a silicon adhesive, an epoxy adhesive, a urethane adhesive, a UV curable resin, or the like. Further, fine particles such as alumina having high thermal conductivity may be mixed in the adhesive 3 to increase the thermal conductivity of the adhesive 3.

  Moreover, the organic EL lighting device according to the present embodiment has an adhesive sheet 5 in which the organic EL panel sealing substrate 2 and the box substrate 4 are bonded between the organic EL panel sealing substrate 2 and the box substrate 4. It has. In addition, heat conductivity can be improved, so that the contact | adherence sheet | seat 5 is thin. In this embodiment, an acrylic pressure-sensitive adhesive sheet having a thickness of 30 μm was used as the adhesion sheet 5.

  According to the organic EL lighting device according to the present embodiment, the light emission distribution in the surface of the organic EL panel 10 is improved by soaking the heat of the entire organic EL panel 10 including the edge portion of the organic EL panel 10. Can do.

Moreover, according to the organic EL lighting device according to the present embodiment, heat of the entire organic EL panel 10 including the edge portion of the organic EL panel 10 can be radiated.
Moreover, according to the organic EL lighting device according to the present embodiment, the entire organic EL panel 10 including the edge portion of the organic EL panel 10 can be protected from external force.

  In addition, by installing the organic EL panel 10 in the box-type substrate 4 and filling the adhesive 3 between the box-type substrate 4 and the organic EL panel 10, the box-type substrate 4 eats the adhesive 3. Since it serves as a bank that prevents the adhesive 3 from being taken out, it is possible to prevent the adhesive 3 from sticking out to an extra portion when the adhesive 3 is filled. Thereby, the productivity of the organic EL lighting device can be improved.

Hereinafter, a second embodiment of the organic EL lighting device according to the present invention will be described.
FIG. 3 is a sectional view of an organic EL lighting device according to the second embodiment of the present invention.
As shown in FIG. 3, the organic EL lighting device according to this example has substantially the same configuration as the organic EL lighting device according to the first example, but in the organic EL lighting device according to this example, The auxiliary heat equalizing plate 9 is disposed between the organic EL panel 10 and the box-type substrate 4 by sandwiching the auxiliary heat equalizing plate 9 between the contact sheets 5a and 5b. In this embodiment, a 144 mm square graphite sheet having a thickness of 0.5 mm is used for the auxiliary heat equalizing plate 9, but a graphite sheet having a size or thickness other than this may be used.

  According to the organic EL lighting device according to the present embodiment, in addition to the effects exhibited by the organic EL lighting device according to the first embodiment, the case where the soaking effect is insufficient with only the box-type substrate 4 or the thickness of the box-type substrate 4. This is effective for reducing the thickness and reducing the weight.

Hereinafter, a third embodiment of the organic EL lighting device according to the present invention will be described.
FIG. 4 is a sectional view of an organic EL lighting device according to the third embodiment of the present invention.
As shown in FIG. 4, the organic EL lighting device according to the present example has substantially the same configuration as the organic EL lighting device according to the first example. However, in the organic EL lighting device according to the present example, An insulating film 4 a is formed on the surface of the box-type substrate 4, and a conductive portion 4 b is formed on a part of the surface of the box-type substrate 4. The conductive part 4b was electrically connected. In this embodiment, the box substrate 4 is made of aluminum, and the aluminum box substrate 4 is anodized to form the insulating film 4a on the surface of the box substrate 4.

  In the organic EL lighting device according to the present embodiment, the box-type substrate 4 itself can be used as an electrode in addition to the effects exhibited by the organic EL lighting device according to the first embodiment.

Hereinafter, a fourth embodiment of the organic EL lighting device according to the present invention will be described.
FIG. 5 is a sectional view of an organic EL lighting device according to the fourth embodiment of the present invention.
As shown in FIG. 5, the organic EL lighting device according to the present example has substantially the same configuration as the organic EL lighting device according to the first example. However, in the organic EL lighting device according to the present example, The auxiliary heat equalizing plate 9a is disposed between the organic EL panel 10 and the box substrate 4 by sandwiching the auxiliary heat equalizing plate 9a between the contact sheets 5a and 5b. In the present embodiment, a 144 mm square graphite sheet having a thickness of 0.5 mm is used as the auxiliary heat equalizing plate 9a, but a graphite sheet having a size or thickness other than this may be used.

  In addition, an insulating film 4a is formed on the surface of the box-type substrate 4, and then a conductive portion 4b is formed on a part of the surface of the box-type substrate 4, and an electrode electric supply unit used as an electric supply unit in place of the electrode 6 6a and the conduction | electrical_connection part 4a were electrically connected. In this embodiment, the box substrate 4 is made of aluminum, and the aluminum box substrate 4 is anodized to form the insulating film 4a on the surface of the box substrate 4. In addition, since the box-type substrate 4 and the auxiliary soaking plate 9a are electrically different in polarity, the insulating member 3a is disposed between the box-type substrate 4 and the auxiliary soaking plate 9a.

According to the organic EL lighting device according to the present embodiment, in addition to the effects exhibited by the organic EL lighting device according to the first embodiment, the case where the soaking effect is insufficient with only the box-type substrate 4 or the thickness of the box-type substrate 4. This is effective for reducing the thickness and reducing the weight.
Moreover, according to the organic EL lighting device according to the present embodiment, the box-type substrate 4 itself can be used as an electrode.

Hereinafter, a fifth embodiment of the organic EL lighting device according to the present invention will be described.
FIG. 6 is a sectional view of an organic EL lighting device according to the fifth embodiment of the present invention.
As shown in FIG. 6, the organic EL lighting device according to the present example has substantially the same configuration as the organic EL lighting device according to the fourth example. However, in the organic EL lighting device according to the present example, The conductive portion 4b was electrically connected using an elastic electrode 7b such as a metal spring instead of the electrode electricity supply portion 6a.

According to the organic EL lighting device according to the present embodiment, in addition to the effects exhibited by the organic EL lighting device according to the first embodiment, the case where the soaking effect is insufficient with only the box-type substrate 4 or the thickness of the box-type substrate 4. This is effective for reducing the thickness and reducing the weight.
Moreover, according to the organic EL lighting device according to the present embodiment, the box-type substrate 4 itself can be used as an electrode.
Moreover, according to the organic EL lighting device according to the present embodiment, it is possible to easily incorporate the organic EL panel 10 into the box-type substrate 4 by using the elastic electrode 6b.

Hereinafter, a sixth embodiment of the organic EL lighting device according to the present invention will be described.
FIG. 7 is a sectional view of an organic EL lighting device according to the sixth embodiment of the present invention.
As shown in FIG. 7, the organic EL lighting device according to this example is the organic EL lighting device according to the third example, in which two organic EL panels 10 are installed in the box-shaped substrate 4 in the horizontal direction. In this embodiment, an example in which two organic EL panels 10 are installed in the horizontal direction is shown as an example. However, the present invention is not limited to this, and any number of organic EL panels 10 may be arranged in the horizontal and vertical directions. Good.

  According to the organic EL lighting device according to the present embodiment, in addition to the effects exhibited by the organic EL lighting device according to the first embodiment, even when a plurality of organic EL panels 10 are installed, the plurality of electrodes 6 are separated. It is possible to share the box-type substrate 4 itself as an electrode without being installed.

Hereinafter, a seventh embodiment of the organic EL lighting device according to the present invention will be described.
FIG. 8 is a perspective view of an organic EL lighting device according to the seventh embodiment of the present invention. FIG. 8A is a perspective view showing the configuration of an organic EL lighting device according to the seventh embodiment of the present invention, and FIG. 8B is an organic EL lighting according to the seventh embodiment of the present invention. It is the perspective view which showed the structure of the auxiliary | assistant soaking plate arrange | positioned on the organic electroluminescent panel of an apparatus.

  As shown in FIG. 8, the organic EL lighting device according to this example is the same as the organic EL lighting device according to the fifth example. Two organic EL panels 10 in the horizontal direction and the vertical direction in the box-type substrate 4. Two were installed. In this embodiment, as an example, two organic EL panels 10 are installed in the horizontal direction and four in the vertical direction. However, the present invention is not limited to this, and the organic EL panel 10 is arranged in the horizontal and vertical directions. Any number may be arranged. Furthermore, the auxiliary soaking plates 9b of the plurality of organic EL panels 10 are integrated.

According to the organic EL lighting device according to the present embodiment, in addition to the effects exhibited by the organic EL lighting device according to the first embodiment, even when a plurality of organic EL panels 10 are installed, the plurality of electrodes 6 are separated. It is possible to share the box-type substrate 4 itself as an electrode without being installed.
Moreover, according to the organic EL lighting device according to the present embodiment, the soaking effect can be further improved by the integrated auxiliary soaking plate 9b.

The eighth embodiment of the organic EL lighting device according to the present invention will be described below.
FIG. 9 is a sectional view of an organic EL lighting device according to the eighth embodiment of the present invention.
As shown in FIG. 9, the organic EL lighting device according to the present example has substantially the same configuration as the organic EL lighting device according to the first example, but in the organic EL lighting device according to the present example, A resin frame 12 was attached around the organic EL panel substrate 1. As the material of the frame 12, for example, vinyl chloride, ABS resin, polycarbonate resin, or the like is used.

According to the organic EL lighting device according to the present embodiment, in addition to the effects exhibited by the organic EL lighting device according to the first embodiment, the protection function of the organic EL panel substrate 1 can be further strengthened.
Moreover, according to the organic EL lighting device according to the present embodiment, the frame 12 can prevent a short circuit between the box-type substrate 4 and the electrode 6.

  Moreover, according to the organic EL lighting device according to the present embodiment, when the adhesive 3 that functions to protect the electrode 6, the conductive material 7, and the transparent electrode 8 is filled with the automatic dispenser, the frame 12 is attached to the adhesive 3. Since it serves as a bank that prevents the organic EL panel substrate 1 from sticking out, the adhesive 3 can be prevented from sticking out onto the organic EL panel substrate 1 when the adhesive 3 is filled. . Thereby, the productivity of the organic EL lighting device can be improved.

  In the present embodiment, the case where the frame 12 according to the present embodiment is installed in the organic EL lighting device according to the first embodiment has been described as an example, but the organic according to the third, sixth, and seventh embodiments is described. It is also possible to install the frame 12 according to the present embodiment in the EL lighting device.

The ninth embodiment of the organic EL lighting device according to the present invention will be described below.
FIG. 10 is a sectional view of an organic EL lighting device according to the ninth embodiment of the present invention.
As shown in FIG. 10, the organic EL lighting device according to the present example has substantially the same configuration as the organic EL lighting device according to the second example. However, in the organic EL lighting device according to the present example, A resin frame 12 was attached around the organic EL panel substrate 1. As the material of the frame 12, for example, vinyl chloride, ABS resin, polycarbonate resin, or the like is used.

According to the organic EL lighting device according to the present embodiment, in addition to the effects exhibited by the organic EL lighting device according to the second embodiment, the protection function of the organic EL panel substrate 1 can be further strengthened.
Moreover, according to the organic EL lighting device according to the present embodiment, the frame 12 can prevent a short circuit between the box-type substrate 4 and the electrode 6.

  Moreover, according to the organic EL lighting device according to the present embodiment, when the adhesive 3 that functions to protect the electrode 6, the conductive material 7, and the transparent electrode 8 is filled with the automatic dispenser, the frame 12 is attached to the adhesive 3. Since it plays the role of a bank that prevents the organic EL panel substrate 1 from sticking out, it is possible to prevent the adhesive 3 from protruding onto the organic EL panel substrate 1 when the adhesive 3 is filled. Thereby, the productivity of the organic EL lighting device can be improved.

  In this embodiment, the case where the frame 12 according to this embodiment is installed in the organic EL lighting apparatus according to the second embodiment has been described as an example. However, the organic EL lighting according to the fourth and fifth embodiments is described. It is also possible to install the frame 12 according to the present embodiment in the apparatus.

The tenth embodiment of the organic EL lighting device according to the present invention will be described below.
FIG. 11 is a sectional view of an organic EL lighting device according to the tenth embodiment of the present invention.
As shown in FIG. 11, the organic EL lighting device according to this example has substantially the same configuration as the organic EL lighting device according to the eighth example, but in the organic EL lighting device according to this example, The claw 12a is formed on the side surface of the frame 12, the groove 4d is formed on the inner surface of the wall surface of the box-type substrate 4, and the claw 12a is box-shaped on the side surface of the frame 12 when the frame 12 is attached to the organic EL panel substrate 1. It was set as the structure fitted in the groove | channel 4d of the board | substrate 4. FIG.

  According to the organic EL lighting device according to the present embodiment, in addition to the effects exhibited by the organic EL lighting device according to the eighth embodiment, the bondability between the box-type substrate 4 and the organic EL panel 10 in the frame 12 is improved. Therefore, the organic EL panel 10 can be prevented from falling from the box-type substrate 4.

Hereinafter, an eleventh embodiment of the organic EL lighting device according to the present invention will be described.
FIG. 12 is a sectional view of an organic EL lighting device according to the eleventh embodiment of the present invention.
As shown in FIG. 12, the organic EL lighting device according to the present example has substantially the same configuration as the organic EL lighting device according to the ninth example, but in the organic EL lighting device according to the present example, The claw 12a is formed on the side surface of the frame 12, the groove 4d is formed on the inner surface of the wall surface of the box-type substrate 4, and the claw 12a is box-shaped on the side surface of the frame 12 when the frame 12 is attached to the organic EL panel substrate 1. It was set as the structure fitted in the groove | channel 4d of the board | substrate 4. FIG.

  According to the organic EL lighting device according to the present embodiment, in addition to the effects exhibited by the organic EL lighting device according to the ninth embodiment, the bondability between the box-type substrate 4 and the organic EL panel 10 in the frame 12 is improved. Therefore, the organic EL panel 10 can be prevented from falling from the box-type substrate 4.

The twelfth embodiment of the organic EL lighting device according to the present invention will be described below.
FIG. 13 is a sectional view of an organic EL lighting device according to the twelfth embodiment of the present invention.
As shown in FIG. 13, the organic EL lighting device according to this example has substantially the same configuration as the organic EL lighting device according to the first example. However, in the organic EL lighting device according to this example, An insulating layer 13 was formed inside the box substrate 4. For example, an insulating film may be inserted into the insulating layer 13.

  According to the organic EL lighting device according to the present embodiment, in addition to the effects exhibited by the organic EL lighting device according to the first embodiment, the insulating layer 13 prevents a short circuit between the box-type substrate 4 and the electrode 6. be able to.

  In this embodiment, the case where the insulating layer 13 according to this embodiment is installed in the organic EL lighting device according to the first embodiment has been described as an example. However, according to the third, sixth, and seventh embodiments. It is also possible to install the insulating layer 13 according to the present embodiment in the organic EL lighting device.

A thirteenth embodiment of the organic EL lighting device according to the present invention will be described below.
FIG. 14 is a sectional view of an organic EL lighting device according to the thirteenth embodiment of the present invention.
As shown in FIG. 14, the organic EL lighting device according to this example has substantially the same configuration as the organic EL lighting device according to the second example. However, in the organic EL lighting device according to this example, In the organic EL lighting device according to this example, the insulating layer 13 was formed inside the box-type substrate 4. For example, an insulating film may be inserted into the insulating layer 13.

  According to the organic EL lighting device according to the present embodiment, in addition to the effects exhibited by the organic EL lighting device according to the second embodiment, the insulating layer 13 prevents a short circuit between the box-type substrate 4 and the electrode 6. be able to.

  In this embodiment, the case where the insulating layer 13 according to this embodiment is installed in the organic EL lighting apparatus according to the second embodiment has been described as an example. However, the organic EL according to the fourth and fifth embodiments is described. It is also possible to install the insulating layer 13 according to the present embodiment in the lighting device.

  The present invention can be used, for example, in an organic EL lighting device.

DESCRIPTION OF SYMBOLS 1 Substrate for organic EL panel 2 Sealing substrate for organic EL panel 3 Adhesive 4 Box-type substrate 4a Insulating film 4b Conductive part 4c Notch part 4d Groove 5, 5a, 5b Adhesive sheet 6 Electrode 6a Electrode electric supply part 6b Elastic electrode 7 Conductive material 8 Transparent electrodes 9, 9a, 9b Auxiliary soaking plate 10 Organic EL panel 11 Organic EL element 12 Frame 12a Claw 13 Insulating layer

Claims (8)

In an organic EL lighting device including an organic EL panel composed of an organic EL element, an organic EL panel substrate, and an organic EL panel sealing substrate,
An organic EL lighting device comprising a box-shaped box-shaped substrate having a wall surface that houses the organic EL panel and covers a side surface of the organic EL panel. The box-type substrate has an insulating film that insulates electricity on the surface of the box-type substrate, and a conduction portion that conducts electricity on the inner surface of the box-type substrate.
The organic EL lighting device according to claim 1, wherein electric power is supplied to the organic EL panel in the conductive portion. 3. The organic EL according to claim 1, further comprising an auxiliary heat equalizing plate that uniformizes heat in the surface of the organic EL panel between a bottom surface of the organic EL panel and the box-type substrate. Lighting device. The organic EL lighting device according to claim 3, wherein a plurality of the organic EL panels are installed in the box-type substrate. 5. The organic EL lighting device according to claim 4, wherein the auxiliary heat equalizing plates of each of the plurality of organic EL panels installed are integrally formed. The organic EL lighting device according to any one of claims 1 to 5, further comprising a frame around the organic EL panel substrate. A claw is formed on the frame, a groove is formed on the inner surface of the wall surface of the box-type substrate, and the claw is fitted into the groove when the frame is attached to the organic EL panel substrate. The organic EL lighting device according to claim 6. The organic EL lighting device according to claim 1, wherein an insulating layer is formed inside the box-type substrate.

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