JP2007287345A - El light emitting module - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an EL light emitting module of a simple wiring for supplying power to a plus electrode or minus electrode. <P>SOLUTION: An EL element module 1 comprises a sealing part 33 arranged on a transparent substrate 32, an EL element 30 equipped with a plus electrode 36p and a minus electrode 36m, and a lead-out line connected to the electrodes. It is formed as a pair of electrodes in which the plus electrode 36p and the minus electrode 36m face each other across the sealing part 33. The same polarity is connected each other by a short line 63, and a lead-outline 60 and the short line 63 are arranged along the sealing part 33 and then drawn outside. So, a wiring for supplying power to the plus electrode or minus electrode is simple. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an EL light emitting module using an electroluminescence element (hereinafter also referred to as an EL element).

  In recent years, EL elements have been developed, and EL elements for display or light sources having high luminance and a large area have been proposed. Accordingly, an EL light emitting module that uses an EL element for illumination is being studied. The EL light emitting module is composed of an EL element serving as a light source such as a lighting fixture and a lead wire for supplying electric power connected to the EL device, and is applied to various lighting fixtures. It is.

  FIG. 4 is a cross-sectional view of a conventional EL light emitting module.

  The main part of the EL light emitting module 100 includes an EL element 130 and a lead line 160 for supplying power to the EL element 130.

  The EL element 130 includes a light emitting layer 131e that converts electric power into light, and a transparent substrate 132 and a sealing portion 133 that are arranged to face each other. The sealing part 133 includes a sealing substrate 133p and a sealing part 133j, and the sealing substrate 133p is bonded to the transparent substrate 132 through the sealing part 133j.

  The transparent substrate 132 is required to be transparent in order to guide light from the light emitting layer 131e to the outside, and is made of, for example, a glass substrate. A portion of the transparent substrate 132 that guides light from the light emitting layer 131 e to the outside is configured as a light emitting region 131.

  The sealing substrate 133p is made of, for example, a glass substrate. Moreover, the sealing part 133j is comprised, for example with the epoxy-type adhesive agent, in order to adhere | attach a glass substrate mutually.

  On the transparent substrate 132, a plus electrode 134p, a light emitting layer 131e, and a minus electrode 134m are sequentially stacked. By applying an appropriate voltage between the plus electrode 134p and the minus electrode 134m, power is supplied to the light emitting layer 131e. To emit light.

  The positive electrode 134p is required to be transparent because it needs to transmit light, and is made of, for example, ITO (indium tin oxide). Further, the negative electrode 134m laminated on the back surface side with respect to the light emitting layer 131e is made of, for example, aluminum because it is not required to be transparent but is required to have appropriate reflectivity. The end portions of the plus electrode 134p and the minus electrode 134m are led out to the outside of the sealing portion 133 (the outer peripheral region of the transparent substrate 132) as appropriate, and the corresponding connection terminals 134pt and 134mt (in FIG. 4, the minus electrode 134m). Is connected to the connection terminal 134pt.).

  In order to apply an appropriate voltage to the plus electrode 134p and the minus electrode 134m, the lead wire 160 is connected to the connection terminals 134mt and 134pt by an appropriate connection means.

Such a conventional EL light emitting module 100 is presented in Patent Document 1, for example.
Japanese Patent Laid-Open No. 11-354272

  However, in the prior art described in Patent Document 1, since electric power is supplied from one end of a plus electrode and a minus electrode (hereinafter, collectively referred to as an electrode), the potential of the electrode There is a problem in that variations occur in the light emitting portion and luminance spots occur in the light emitting portion.

  As a means for solving this problem, it is considered that the positive electrode or the negative electrode is extended between the light emitting regions, and power is supplied from both ends of the positive electrode (or the negative electrode) arranged to face the light emitting regions. It is done. Thereby, the dispersion | variation in the electric potential of an electrode is suppressed and the brightness spot of a light emission part is suppressed.

  In such a configuration, an auxiliary member formed with a conductor pattern that contacts both ends of the plus electrode (or minus electrode) is formed, and power is supplied by joining the conductor pattern of the auxiliary member to the electrode. Can be considered.

  As another means, it is conceivable to form a conductor pattern derived from both ends of the plus electrode (or minus electrode) on the transparent substrate of the EL element, and supply power to the electrode through the conductor pattern.

  However, in order to form an auxiliary member, many steps such as formation of a conductor pattern have to be performed, which requires manufacturing costs.

  The present invention has been made in view of such a situation, and an object of the present invention is to provide an EL light emitting module having a simple configuration for wiring for supplying power to a plus electrode or a minus electrode.

  An EL light emitting module according to the present invention includes a transparent substrate, a sealing portion disposed to face the transparent substrate, a positive electrode and a negative electrode that are led to the outer periphery of the sealing portion and disposed on the transparent substrate as transparent electrodes. An EL element composed of an electrode, a positive lead wire having one end connected to the positive electrode and the other end led to the outside, and a negative lead wire having one end connected to the negative electrode and the other end led to the outside The positive electrode is formed as a pair of electrodes facing each other with the sealing portion interposed therebetween, and the negative electrode is a pair of electrodes facing each other with the sealing portion interposed therebetween Formed as electrodes, and the pair of positive electrodes and the pair of negative electrodes are connected by a short-circuit line disposed along the sealing portion, and the positive lead line or At least one of the serial minus lead wire is disposed along the outer periphery of the sealing portion, the negative lead wire and the positive lead wire is characterized in that it is a pair externally.

  With this configuration, each of the plus lead wire and the minus lead wire (hereinafter, the plus lead wire and the minus lead wire are collectively referred to as a lead wire) is wired to the plus electrode and the minus electrode, so that a simple wiring structure is used. Electric power can be supplied to the EL element.

  In addition, since the pair of plus electrodes and the pair of minus electrodes are connected to each other by a short-circuit line, power is supplied to both edges of the plus electrode and the minus electrode of the EL element. Variation in potential of the entire electrode can be suppressed. As a result, luminance unevenness in the light emitting unit can be reduced.

  In addition, since the pair of lead lines is led out from one place with the plus lead line and the minus lead line, wiring of the lead line when manufacturing a lighting fixture or the like using the EL light emitting module becomes easy.

  The EL light emitting module according to the present invention is characterized in that a connector for power connection is provided at the other end of the pair of the plus lead wire and the minus lead wire. With this configuration, the EL light emitting module can be easily replaced.

  In the EL light emitting module according to the present invention, a plate-like conductor having a resistance lower than that of the transparent electrode is bonded to at least one of the plus electrode and the minus electrode, and the plus lead is connected to the conductor. The one end of a line or the minus lead line is connected.

  With this configuration, electric power is supplied to the plus electrode and the minus electrode through the conductor, so that the potentials of the plus electrode and the minus electrode become substantially the same, and thus luminance unevenness of the light emitting portion can be reduced.

  In addition, since the plus electrode or the minus electrode and the conductor are firmly bonded on the surface, and the lead wire is connected to the conductor by solder or the like, power can be easily supplied to the EL element.

  Further, the EL light emitting module according to the present invention includes a front surface case that accommodates the EL element facing the transparent substrate, and a back surface case that engages with the front surface case and covers the EL element. The case has a window portion corresponding to a light emitting region of the EL element.

  With this configuration, the surface case stably supports the EL element, so that sufficient mechanical strength can be ensured without reducing the transmittance. In addition, the surface case protects the edges and corners of the transparent substrate, so that the edges and corners are not damaged, and the handler is protected from sharp edges (the sharp edges formed on the edges of the transparent substrate). It also has a protective effect.

  In the EL light emitting module according to the present invention, the surface case has a light shielding property.

  With this configuration, the periphery of the light-emitting region (the outer peripheral region of the light-emitting region) is masked and the light-emitting region can be made visible, so that the light-emitting region can be made visible. Further, since the non-light emitting portion (portion other than the light emitting region) can be masked, the decorativeness and the design can be improved.

  Further, in the EL light emitting module according to the present invention, the back case has a window portion corresponding to the sealing portion.

  With this configuration, the mechanical strength can be ensured without deteriorating the heat dissipation, the wiring portion (the portion where the lead wire is disposed) can be masked, and a heat radiator having a shape protruding from the window portion is provided. Therefore, it is possible to further improve the heat dissipation.

  According to the EL light emitting module according to the present invention, since each of the plus lead wire and the minus lead wire is wired to the plus electrode and the minus electrode, power can be supplied to the EL element with a simple wiring structure.

  Further, since the pair of plus electrodes and the pair of minus electrodes are connected to each other by a short-circuit line, power is supplied to both ends of the plus electrode and the minus electrode of the EL element. Variation in potential of the entire substrate can be suppressed. As a result, luminance unevenness in the light emitting unit can be reduced.

  In addition, since the pair of lead lines is led out from one place with the plus lead line and the minus lead line, wiring of the lead line when manufacturing a lighting fixture or the like using the EL light emitting module becomes easy.

  In addition, according to the EL light emitting module of the present invention, since the power supply connector is provided at the other end of the pair of the plus lead wire and the minus lead wire, the EL light emitting module can be easily replaced.

  In addition, according to the EL light emitting module according to the present invention, a plate-like conductor having a resistance lower than that of the transparent electrode is joined to at least one of the plus electrode and the minus electrode, and the plus lead wire or the minus lead wire is connected to the conductor. Since the power is supplied to the positive electrode and the negative electrode through the conductor and the potentials of the positive electrode and the negative electrode can be made substantially the same, the luminance unevenness of the light emitting part can be reduced. Can do.

  Further, since the plus electrode or the minus electrode and the conductor are firmly bonded on the surface, and the lead wire is connected to the conductor by solder or the like, power can be easily supplied to the EL element.

  In addition, according to the EL light emitting module according to the present invention, the front surface case and the back surface case for accommodating the EL element are provided, and the front surface case has a window portion corresponding to the light emitting region, so that the transmittance is not reduced. Sufficient strength can be secured. Further, since the surface case protects the edge and corners of the transparent substrate, the surface edge does not cause damage at the edges and corners, and has an effect of protecting the handler from sharp edges.

  Further, according to the EL light emitting module according to the present invention, the periphery of the light emitting region can be masked, the light emitting region can be made obvious, and the decorativeness and design can be improved.

  In addition, according to the EL light emitting module according to the present invention, the back case has the window corresponding to the sealing portion, so that the mechanical strength is ensured without degrading the heat dissipation and the wiring portion is masked. In addition, it is possible to further improve the heat dissipation by providing a heat radiator having a shape protruding from the window.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<Embodiment 1>
FIG. 1 is a perspective view of an EL light emitting module according to Embodiment 1 of the present invention.

  The main part of the EL light emitting module 1 includes an EL element 30 and a lead wire 60 for supplying power to the EL element 30. The EL element 30 converts electric power into light. The lead wire 60 has one end connected to the EL element 30 and the other end connected to a power source that supplies power, a power connection connector, or the like.

  The EL element 30 includes a light emitting layer (not shown) that converts electric power into light, and a transparent substrate 32 and a sealing portion 33 that are arranged to face each other. The sealing portion 33 includes a sealing substrate 33p and a sealing portion 33j, and the sealing substrate 33p is bonded to the transparent substrate 32 via the sealing portion 33j. The configuration of the EL element 30 is the same as that of the EL element 130 shown in the prior art.

  A light emitting layer is formed between the transparent substrate 32 and the sealing substrate 33p. Further, a positive hole transport layer (not shown) is formed on the plus side and an electron transport layer (not shown) is formed on the minus side with the light emitting layer interposed therebetween. An organic EL element has a light emitting layer composed of organic molecules. Further, a plus electrode 36p is formed outside the plus-side hole transport layer, and a minus electrode 36m is formed outside the minus-side electron transport layer.

  By using the EL element 30 as an organic EL element, it is possible to light at a low voltage, and the EL light emitting module 1 with high luminous efficiency can be obtained. Various structures have been proposed for the light emitting layer of the EL element 30 and the structure of the hole transport layer, the electron transport layer, and the like laminated on the light emitting layer, and the structure is not limited to the above-described structure.

  The transparent substrate 32 is made of, for example, a glass substrate. A portion of the transparent substrate 32 that emits light from the light emitting layer to the outside is configured as a light emitting region 31.

  The sealing substrate 33p is made of, for example, a glass substrate. Moreover, the sealing part 33j is comprised, for example with the epoxy-type adhesive agent, in order to adhere | attach a glass substrate mutually.

  The sealing substrate 33p is disposed on the surface facing the transparent substrate 32, and seals and seals the light emitting layer by joining the transparent substrate 32 and the sealing portion 33j. Moreover, a heat radiating means can be appropriately provided on the back surface of the sealing substrate 33p.

  The plus electrode 36 p is formed in a region including the light emitting region 31 of the transparent substrate 32. A positive hole transport layer is stacked on the positive electrode 36p, a light emitting layer is stacked on the positive hole transport layer, and an electron transport layer is further stacked. The positive electrode 36p laminated on the transparent substrate 32 is required to be transparent because it needs to emit light, and is made of, for example, ITO (indium tin oxide). Further, the negative electrode 36m laminated on the back surface side with respect to the light emitting layer is made of, for example, aluminum because it is not required to be transparent but is required to have appropriate reflectivity.

  The plus electrode 36p extends to both sides of the outer periphery of the sealing portion 33, and is disposed with the light emitting region 31 facing each other. The plus electrodes 36p arranged with the light emitting region 31 in between are connected by a short-circuit line 63p.

  The negative electrode 36m is extended to the outer periphery of the sealing portion 33 in a direction crossing the direction in which the positive electrode 36p extends, and the light emitting region 31 is disposed so as to face each other. The minus electrodes 36m disposed with the light emitting region 31 in between are connected by a short-circuit line 63m.

  The short-circuit lines 63p and 63m are arranged along the outer periphery of the sealing portion 33. The short-circuit wires 63p and 63m have a core made of a conductor (for example, copper or aluminum) and the periphery of the core is covered with an insulating film. For example, a wire harness is used as the short lines 63p and 63m. Since the periphery of the cores of the short-circuit wires 63p and 63m is covered with an insulating film, the same-polarity electrodes (minus electrodes 36m or plus electrodes 36p) are short-circuited without short-circuiting across electrodes of different polarities. It can be short-circuited at 63p and 63m.

  Since the positive electrodes 36p and 36p and the negative electrodes 36m and 36m are connected by the short-circuit lines 63p and 63m, respectively, when power is supplied to the positive electrode 36p or the negative electrode 36m of the EL element 30, Potential difference can be suppressed. Thereby, the luminance unevenness of the light emitting part can be reduced.

  In the lead wire 60, the core is a conductor (for example, copper or aluminum), and the periphery of the core is covered with an insulating film. For example, a wire harness is used as the lead wire 60.

  The lead wire 60 is connected to the plus electrode 36p and the minus electrode 36m, respectively. The leader line 60 connected to the plus electrode 36p is a plus leader line 60p. The leader line 60 connected to the minus electrode 36m is a minus leader line 60m.

  One end of the plus lead line 60 p is connected to the plus electrode 36 p, is wired along the side wall 33 w of the sealing portion 33, and the other end is led out of the transparent substrate 32. The minus lead line 60m is connected to the minus electrode 36m at one end, wired along the side wall 33w of the sealing portion 33, and led to the outside of the transparent substrate 32 at the other end. Also, each of the positive lead line 60p and the negative lead line 60m is fixed by being bonded to the side wall 33w with an insulating adhesive. Thereby, since the leader line 60 is firmly fixed, the connection between the leader line 60 and the electrode 36 is not disconnected.

  Note that the EL light emitting module 1 is not limited to the configuration in which both the plus lead line 60p and the minus lead line 60m are wired along the side wall 33w of the sealing portion 33, and the plus lead line 60p and the minus lead line 60m. Either one may be configured to be wired along the side wall 33w of the sealing portion 33.

  As a means for supplying power to the EL element 30, the lead wire 60 is wired and connected to the electrode, so that the wiring structure is simple.

  The plus lead line 60p and the minus lead line 60m are paired outside the transparent substrate 32 and formed into a cord. A power connection connector 61 is provided at the tip of the cord (the part corresponding to the other end of the lead wire 60). Since the pair of lead wires 60 are led out from one place of the transparent substrate 32, when the lighting device or the like is manufactured using the EL light emitting module 1, the lead wires 60 can be easily wired. Further, since the power connection connector 61 is provided at the tip (other end) of the lead wire 60, the EL light emitting module can be easily replaced.

<Embodiment 2>
FIG. 2 is a perspective view of an EL light emitting module according to Embodiment 2 of the present invention.

  In the EL light emitting module 1 according to the present embodiment, the main part is constituted by the EL element 30 and the lead wire 60 for supplying power to the EL element 30, and the plus electrode 36p and the minus electrode 36m are plate-like conductors 70. It is reinforced by. Since the configuration of the EL element 30 and the lead wire 60 is substantially the same as that of the first embodiment, the description thereof is omitted.

  A plate-like conductor 70 is joined to the plus electrode 36p by a conductive adhesive so as to cover the whole or a part thereof. The negative electrode 36m is formed by bonding a plate-like conductor 70 with a conductive adhesive so as to cover the whole or a part thereof. As the conductor 70, for example, a copper plate or the like is used.

  The conductor 70 is connected to the plus electrode 36p or the minus electrode 36m so as to cover the whole or a part thereof with a conductive adhesive. Further, a plus lead wire 60p (or minus lead wire 60m) and a short-circuit wire 63p (or short-circuit wire 63m) are connected to the surface of the conductor 70.

  The plus electrodes 36p are connected to each other by a short-circuit line 63p through a conductor 70. Similarly, the minus electrodes 36m are connected to each other by a short-circuit line 63m via a conductor 70.

  One end of the plus lead line 60p is connected to a conductor 70 joined to the plus electrode 36p, and the other end of the plus lead line 60p is led out of the transparent substrate 32. One end of the minus lead 60m is connected to a conductor 70 joined to the minus electrode 36m, and the other end of the minus lead 60m is led out of the transparent substrate 32.

  Since the conductor 70 is surface-bonded to the electrode 36 and the lead wire 60 is firmly bonded to the conductor 70 with solder or the like, power can be reliably supplied to the EL element.

  In addition, since electric power is supplied to the EL element 30 through the conductor 70 covering the plus electrode 36p or the minus electrode 36m, the potentials of the plus electrode 36p or the minus electrode 36m are equalized, whereby the luminance of the light emitting unit is increased. Spots are reduced. In particular, when the positive electrode 36p or the negative electrode 36m is entirely covered with the conductor 70, the potential of the positive electrode 36p or the negative electrode 36m can be made substantially the same. Can do.

<Embodiment 3>
FIG. 3 is an exploded perspective view of an EL light emitting module according to Embodiment 3 of the present invention.

  The EL light emitting module 1 according to the present embodiment includes an EL element 30, a lead wire 60 connected to the EL element 30, a front case 20 disposed to face the transparent substrate 32, and a back case that engages with the front case 20. 50 is the main part. That is, the EL light emitting module 1 according to the present embodiment protects the EL element 30 of the EL light emitting module 1 according to the first embodiment or the second embodiment, and also improves the appearance of the front case 20 and the back surface. A case 50 is provided. Since the EL element 30, the lead wire 60, and the transparent substrate 32 are the same as those in the first embodiment or the second embodiment, description thereof is omitted.

  The front case 20 is a quadrilateral and planar support portion 21 on which the EL element 30 (transparent substrate 32) is placed and supported, and the EL device 30 (transparent substrate 32) is erected on the outer peripheral end of the support portion 21. A frame portion 22 is provided that is enclosed, positioned, and accommodated.

  With this configuration, the EL element 30 can be reliably positioned and placed inside the surface case 20. Since the front case 20 stably supports the EL element 30 and reliably separates it from the external environment, the EL element 30 can be protected from the surrounding external environment. Therefore, the mechanical strength of the EL element 30 can be easily ensured, and the reliability and practicality can be improved. Further, since the front case 20 protects the edges and corners of the transparent substrate 32, the edge and corners are not damaged and handled from a sharp edge (a sharp ridge formed on the edge of the transparent substrate). It also has the effect of protecting the person.

  In the center of the support portion 21, a window portion 23 opened corresponding to the light emitting region 31 of the EL element 30 is formed in order to directly emit light from the EL element 30 to the outside of the EL light emitting module 1. That is, the support portion 21 has a frame shape corresponding to the outer peripheral portion of the EL element 30. Therefore, since the light emitted from the EL element 30 is directly emitted from the window 23 to the outside of the EL light emitting module 1, when the window 23 is not provided (for example, the surface case 20 is a transparent case as a whole). It is possible to improve the transmittance of the EL light emitting module 1 as compared with the case of the above. Moreover, since the support part 21 is supporting the circumference | surroundings of the EL element 30 reliably, it can ensure mechanical strength, without reducing the transmittance | permeability.

  Further, the front case 20 is formed of, for example, a synthetic resin and has the window portion 23, so that it can be formed of a light shielding resin. The surface case 20 is formed of a light-shielding synthetic resin (for example, plastic) to make the light emitting region 31 of the EL element 30 stand out, and the light emitting region 31 is made visible. Since it is possible to shield (masking) so that the outer peripheral region of the region 31 is not visible, the light emitting region 31 can be made visible, and the decorativeness when the EL light emitting module 1 is used as a light source for illumination, Design can be improved. In addition, when the surface case 20 is made translucent, it is possible to make it flat without providing the window portion 23.

  Further, a terminal lead-out portion 24 for arranging and leading out the leader line 60 is formed in a notch shape at an appropriate position of the frame portion 22 corresponding to one side of the front case 20.

  Since the EL element 30 is generally a quadrilateral because of its ease of manufacture, the surface case 20 is similarly a quadrilateral, but the surface case 20 may be appropriately deformed according to the shape of the EL element 30. Is possible.

  The back surface case 50 includes a covering portion 51 that covers the outer peripheral portion of the EL element 30, and a frame portion 52 that stands on the outer peripheral end of the covering portion 51 and encloses the EL element 30. That is, the back case 50 (frame portion 52) is engaged with the front case 20 (frame portion 22) and covered with the EL element 30, and thus is engaged with the front case 20 and the EL element 30. Can be reliably separated and protected from the external environment, the mechanical strength of the EL light emitting module 1 can be further improved, and the reliability and practicality can be improved. Further, since the wiring part (part where the leader line is arranged) can be masked, the design is improved.

  Therefore, since the EL element 30 has a structure housed in a box composed of the front case 20 and the back case 50, it becomes a so-called cassette type structure, which is extremely easy to handle and has practicality as an illumination light source. It is possible to greatly improve.

  In the center of the covering portion 51, a window portion 53 that is opened in correspondence with the EL element 30 is formed in order to release heat from the EL element 30 to the outside of the EL element 30. That is, since the covering portion 51 has a frame shape corresponding to the outer peripheral portion of the EL element 30, the heat generated in the EL element 30 is directly released to the outside of the EL element 30. Therefore, compared with the case where the window part 53 is not provided, mechanical strength can be ensured without deteriorating the heat dissipation as the EL element 30. Moreover, since the edge and corner of the transparent substrate can be protected, the edge and corner of the transparent substrate are not damaged. Further, by providing the sealing portion 33 with a heat radiator having a shape protruding from the window portion 53, the heat radiation efficiency can be further improved.

1 is a perspective view of an EL light emitting module according to Embodiment 1 of the present invention. It is a perspective view of EL light emitting module concerning Embodiment 2 of the present invention. It is a disassembled perspective view of the EL light emitting module according to Embodiment 3 of the present invention. It is sectional drawing of the conventional EL light emitting module.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 EL light emitting module 20 Surface case 21 Support part 22 Frame part 23 Window part 24 Terminal derivation | leading-out part 30 EL element 31 Light emission area 32 Transparent substrate 33 Sealing part 33j Sealing part 33p Sealing substrate 36 Electrode (positive electrode and negative electrode)
36m Minus electrode 36p Plus electrode 50 Back case 51 Covering part 52 Frame part 53 Window part 60 Leader (plus lead line and minus lead line)
60m Minus leader line 60p Plus leader line 63, 63m, 63p Short circuit line 70 Conductor

Claims (6)

An EL element constituted by a transparent substrate, a sealing portion disposed opposite to the transparent substrate, a plus electrode and a minus electrode led to the outer periphery of the sealing portion and disposed on the transparent substrate as transparent electrodes; ,
A plus lead wire having one end connected to the plus electrode and the other end led to the outside;
An EL light emitting module including a minus lead wire having one end connected to the minus electrode and the other end led to the outside;
The positive electrode is formed as a pair of electrodes opposed to each other with the sealing portion interposed therebetween,
The negative electrode is formed as a pair of electrodes facing each other with the sealing portion interposed therebetween,
A pair of the positive electrodes and a pair of the negative electrodes are connected by a short-circuit line that is disposed along the sealing portion,
At least one of the plus leader line or the minus leader line is disposed along the outer periphery of the sealing portion,
The EL light emitting module, wherein the plus lead line and the minus lead line are paired outside.   2. The EL light emitting module according to claim 1, wherein a power connection connector is provided at the other end of the pair of the plus lead wire and the minus lead wire.   A plate-like conductor having a resistance lower than that of the transparent electrode is joined to at least one of the plus electrode and the minus electrode, and the one end of the plus lead wire or the minus lead wire is connected to the conductor. The EL light emitting module according to claim 1, wherein the EL light emitting module is provided. A front case for accommodating the EL element facing the transparent substrate; and a back case for covering the EL element by engaging the front case;
4. The EL light emitting module according to claim 1, wherein the surface case includes a window corresponding to a light emitting region of the EL element. 5.   The EL light emitting module according to claim 4, wherein the surface case has a light shielding property.   6. The EL light emitting module according to claim 4, wherein the back case has a window portion corresponding to the sealing portion.

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