JP2020068156A - Oled illumination device - Google Patents

Abstract

To provide an OLED illumination device that can prevent a non-light-emitting region of an OLED panel from chipping.SOLUTION: An OLED illumination device S for inspection has an OLED panel 1 and a casing 2. The OLED panel 1 has one principal face 18 that has a light emitting region 181, and a non-light-emitting region 182 outside the light emitting region 181. The casing 2 houses an OLED panel 1. The casing 2 has a first metal member 21 having an opening 211 facing the light emitting region 181, and a first cover part 212 covering the non-light-emitting region 182.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a casing of an OLED lighting device.

  OLEDs (Organic Light Emitting Diodes) are also called organic ELs (Organic ElectroLuminescence) and are relatively thin, light, and have low power consumption. Therefore, in recent years, for example, research into applications to display devices and lighting devices has been conducted. Being developed. OLED panels using such OLEDs are disclosed in, for example, Non-Patent Documents 1 to 3 and are commercially available.

  One of the applications of the OLED lighting device is lighting for product inspection. Products here include, for example, semiconductors, electronic / electrical parts, FPD-related, transportation / robots, iron / metal parts, paper / film / glass, automobiles, rubber / resin / plastic products, foods, chemicals, containers, packaging, It is a medical device. For example, an OLED illuminating device may be used as illumination when inspecting these using machine vision.

Catalog; "OLEDWorks OLED Panel Brite FL300 Family Product Sheet", OLEDWorks LLC, February 2016 Catalog; "Lumiblade OLED Panel Brite FL300 nw", OLEDWorks LLC, September 2016 Catalog; "Design-in guide OLED Panel Brite 2 Family", OLEDWorks LLC, September 2016

  The OLED lighting device includes an OLED panel, and one main surface of the OLED panel includes a light emitting region and a non-light emitting region located outside the light emitting region. The light emitting region faces the organic light emitting layer, and the light generated in the organic light emitting layer is emitted from the light emitting region. Therefore, in order to prevent light generated in the organic light emitting layer from leaking from the non-light emitting region, a mode in which the non-light emitting region is covered with a light shielding sheet can be considered.

  However, in this mode, in the case of inspection illumination, if an object hits the light-shielding sheet for some reason during the inspection, the light-shielding sheet may be broken, the non-light emitting area may be chipped, and a part of the non-light emitting area may be scattered. . The scattered matter is mainly a part of an optical substrate (for example, a glass substrate). It is necessary to avoid the scattered matter from entering the inspection object.

  An object of the present invention is to provide an OLED lighting device that can prevent the non-light emitting area of the OLED panel from being chipped.

  An OLED lighting device according to the present invention is an OLED lighting device for inspection, comprising an OLED panel having a light emitting region and a non-light emitting region located outside the light emitting region, and a main surface, and the OLED panel. And a casing that accommodates the casing. The casing includes a first metal member having an opening facing the light emitting area and a first cover portion covering the non-light emitting area.

  There is an opening formed in the first metal member at a position facing the light emitting region. Therefore, the light emitted from the light emitting region is not blocked by the first metal member.

  The non-light emitting area is covered with a first cover portion formed on the first metal member. Since the first cover portion is made of metal, it is harder and less likely to tear than the light shielding sheet. Therefore, even if an object hits the first cover portion for some reason during the inspection, it is possible to prevent the non-light-emission region from being chipped, and even if it is chipped, scattering can be prevented.

  Since the first cover portion is made of metal, it has a light shielding property. Therefore, it is possible to prevent light from leaking from the non-light emitting area without covering the non-light emitting area with the light shielding sheet. Therefore, the step of attaching the light-shielding sheet to the non-light emitting area is not required, and the assembleability of the OLED lighting device can be improved.

  In the above structure, the first metal member is further formed with a step portion surrounding the OLED panel.

  The stepped portion formed on the first metal member surrounds the OLED and defines a space for housing the OLED panel. This configuration is an aspect in which the step portion is formed on the first metal member. As will be described later, there is also a mode in which the step portion is formed on the second metal member.

  In the above configuration, the casing further includes a flat plate-shaped second metal member that covers the other main surface of the OLED panel opposite to the one main surface.

  The OLED panel is housed in the space defined by the stepped portion formed on the first metal member. Therefore, it is not necessary to bend the edge of the second metal member to form a space for housing the OLED panel. Therefore, the shape of the second metal member can be flat.

  In the above configuration, the casing has a portion where a convex portion formed on one of the first metal member and the second metal member is fitted into a through hole formed on the other, and the portion is caulked. As a result, the first metal member is fixed to the second metal member.

  A screw is a means for fixing the first metal member to the second metal member. However, in the case of a screw, there is a risk that the screw will fall off and the dropped screw will mix into the inspection object. With this configuration, the first metal member can be fixed to the second metal member without using screws.

  According to this configuration, the first metal member is fixed to the second metal member by caulking, so that the OLED lighting is more stable than the case where the first metal member is fixed to the second metal member with a screw. The assemblability of the device can be improved.

  Since the OLED lighting device is attached to another member on the second metal member side of the casing, it is preferable that the second metal member side is flat. Therefore, when the first metal member is fixed to the second metal member by the screw, it is necessary to form the screw hole in the second metal member. If the second metal member is thin, the screw hole cannot be formed, so that the second metal member needs to have a certain thickness. As a result, the thickness of the OLED lighting device increases. On the other hand, according to this configuration, since the first metal member is fixed to the second metal member by caulking, the first metal member and the second metal member can be thinned, and as a result, the OLED is formed. The lighting device can be thinned.

  In the above structure, the OLED lighting device further includes a board member, and the board member is provided with a main body part for arranging all or part of the OLED panel, an attachment part for attaching a cable, and power supply with the cable. Wiring for supplying electric power to the OLED panel.

  In order to supply power to the OLED panel, it is necessary to connect a cable (electric wire) to the OLED panel. Depending on the location where the OLED panel is used, there is a case where a hand or a leg is caught on this cable. When a hand or a foot is caught on the cable, a tensile force is applied to the cable, and the tensile force is concentrated on a connecting portion between the cable and the OLED panel, which may cause a connection failure at the connecting portion.

  Therefore, in order to increase the connection strength, a measure to increase the amount of solder in the connection portion can be considered. However, in the OLED panel, the electrode terminal (electrode pad) for connecting to the cable in the connection portion has a small area, and thus it is difficult to deposit a large amount of solder. Even if more solder can be placed, the height of the placed solder exceeds the other main surface (for example, the back surface) of the OLED panel, and when the OLED panel is housed in the casing, it is placed high. The other main surface of the OLED panel cannot be brought into close contact with the surface of the casing by soldering. Even if an attempt is made to form a recess so that more solder can be deposited, it is difficult to deepen the recess because the thickness of the OLED panel is, for example, about 1 to 3 mm.

  According to this configuration, since the accessory is provided, solder can be placed in an amount not only for electrical connection but also for strengthening the connection strength, and the connector can be arranged. Can be stronger.

  In the above structure, the OLED lighting device further includes a fixing member that fixes the appendage to the second metal member.

  According to this configuration, since the attachment part is fixed to the second metal member by the fixing member, the resistance against the pulling of the cable can be further increased.

  In the above configuration, the first metal member further includes a pressing member that presses the cable on the second metal member at a position outside the position of the attachment portion.

  Since the attached portion is a portion where the cable and the board member are connected, when the cable is pulled, the cable is easily detached from this portion. The pressing member presses the cable on the second metal member at a position outside the position of the accessory. Therefore, the resistance to the pulling of the cable can be further increased.

  The pressing member is, for example, a spring member. The spring member is, for example, a leaf spring.

  In the above configuration, the second metal member includes a first convex portion and a second convex portion that are arranged at intervals along a direction in which the cable extends from a position where the accessory is fixed. In the state where the cable is placed on the first convex portion and the second convex portion, the cable is interposed between the first convex portion and the second convex portion by the pressing member. It is held down by.

  In the state where the cable is placed on the first convex portion and the second convex portion, the cable is pressed by the pressing member between the first convex portion and the second convex portion, The cable is bent in a valley shape (in other words, a U shape). Since the pressing member presses this valley-shaped bent portion, the contact area between the pressing member and the cable becomes large, and as a result, the resistance to the pulling of the cable can be further increased.

  In the above configuration, the casing includes a second metal member that covers the other main surface of the OLED panel opposite to the one main surface, and the second metal member has a step portion that surrounds the OLED panel. Has been formed.

  This configuration is an aspect in which the step portion is formed on the second metal member.

  This aspect can have the following configurations. In the first metal member, a pair of facing side portions are bent, a first through hole is formed in one of the pair of side portions, and a second through hole is formed in the other side portion. And a first claw portion and a second claw portion are respectively formed on a pair of opposing side portions of the second metal member, and the first claw portion is the first claw portion. Is inserted into the through hole, and the second claw portion is inserted into the second through hole, whereby the first metal member is fixed to the second metal member.

  With this configuration, the first metal member can be fixed to the second metal member without using screws.

  According to the present invention, it is possible to prevent the non-light emitting region of the OLED panel from being chipped.

It is a perspective view showing the whole OLED lighting device composition concerning this embodiment. It is a perspective view which shows the state which removed the 1st metal member from the OLED illuminating device shown in FIG. It is sectional drawing which shows the structure of the OLED panel with which the OLED lighting device which concerns on this embodiment is equipped. It is a perspective view of a 1st metal member. It is a perspective view of a 2nd metal member. It is sectional drawing which shows the convex part for crimping fitted in the through hole for crimping. It is a perspective view which shows the board member by which the OLED panel was mounted. FIG. 8 is a perspective view of the configuration of FIG. 7 with the cable removed. It is sectional drawing in the II cross section line of FIG. 8A. It is a rear view of a substrate member. It is a perspective view which shows the whole structure of the OLED illuminating device which concerns on a modification. It is the perspective view which looked at the OLED lighting device shown in FIG. 9 from the back side.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In each of the drawings, the components denoted by the same reference numerals indicate the same components, and the description of the components already described will be omitted.

  FIG. 1 is a perspective view showing the overall configuration of an OLED lighting device S according to this embodiment. FIG. 2 is a perspective view showing a state in which the first metal member 21 is removed from the OLED lighting device S shown in FIG. FIG. 3 is a cross-sectional view showing the configuration of the OLED panel 1 included in the OLED lighting device S according to this embodiment. The OLED lighting device S is a lighting for inspection.

  Referring to FIG. 3, OLED panel 1 is a device that includes an OLED (Organic Light Emitting Diode) and emits light when supplied with power. In the present embodiment, in order to illuminate the work surface, the OLED panel 1 emits light on the surface (two-dimensional). The OLED panel 1 may have any shape such as a polygonal shape or a circular shape in a plan view, but in the present embodiment, it has a rectangular shape in a plan view. The OLED panel 1 may be monochromatic or white depending on the application. The OLED panel 1 includes an organic light emitting layer between a pair of first and second electrodes, and when electric power is supplied to the first and second electrodes, recombination of electrons and holes in the organic light emitting layer. Emits light. Such an OLED panel 1 is, for example, as shown in FIG. 3, an optical protective layer 11, an optical substrate 12, a first electrode layer 13, an organic light emitting layer 14, a second electrode layer 15, and a sealing layer. A stop layer 16 and a metal protective layer 17 are provided.

  The optical substrate 12 is a support member that supports the first electrode layer 13, the organic light emitting layer 14, the second electrode layer 15, the sealing layer 16, and the metal protective layer 17, which are formed on the optical substrate 12. The optical substrate 12 is formed of, for example, resin or glass that transmits at least light emitted from the organic light emitting layer 14. The optical substrate 12 is formed in a plate shape (layer shape) such as a rectangular shape or a circular shape.

  The optical protection layer 11 is a layer (two-dimensionally, layered, film-shaped) laminated on one main surface of the optical substrate 12 to protect the surface of the optical substrate 12, and the organic light emitting layer 14 emits light. Formed of resin, for example, which allows at least light to pass therethrough.

  The first and second electrode layers 13 and 15 are members that form a pair with each other and supply electric power supplied from the outside to the organic light emitting layer 14. In the present embodiment, the first electrode layer 13 is an anode electrode (+ electrode) and is laminated in a planar shape on the other main surface of the optical substrate 12. In the present embodiment, since the light emitted from the organic light emitting layer 14 is emitted from the first electrode layer 13 side, the first electrode layer 13 transmits at least the light emitted from the organic light emitting layer 14, for example, ITO ( It is formed of a compound (transparent electrode material) having transparent conductivity such as Indium Tin Oxide), IZO (Indium Zinc Oxide), and ZnO (Zinc Oxide). In the present embodiment, the second electrode layer 15 is a cathode electrode (−electrode), and is laminated in a planar shape on the organic light emitting layer 14 so as to face the first electrode layer 13 with the organic light emitting layer 14 interposed therebetween. It In the present embodiment, in order to reflect the light emitted from the organic light emitting layer 14 to the first electrode layer 13 side, at least the light emitted from the organic light emitting layer 14 is reflected, such as silver (Ag) or platinum (Pt). ), Aluminum (Al), and other metals (including alloys). The second electrode layer 15 may also be formed of the above-mentioned transparent electrode material in order to radiate the light emitted from the organic light emitting layer 14 from both sides.

  The organic light emitting layer 14 is a member that is laminated on the first electrode layer 13 in a planar shape and emits light when power is supplied by the pair of first and second electrode layers 13 and 15. The organic light emitting layer 14 is, for example, a hole injection layer (HIL) / hole transfer layer (HTL) / light emitting layer (EML: Emissive Layer) / electron transfer layer (ETL: Electron Transfer Layer). Layer / electron injection layer (EIL: Electron Injection Layer). As the organic light emitting layer 14, in addition to the above, for example, a light emitting layer / electron transport layer, a hole transport layer / light emitting layer / electron transport layer, a hole transport layer / light emitting layer / positive layer Pore blocking layer / electron transport layer, hole transport layer / light emitting layer / hole blocking layer / electron transport layer / buffer layer, buffer layer / hole transport layer / light emitting layer unit / Examples thereof include those composed of a hole blocking layer / electron transport layer / buffer layer. The organic light emitting layer 14 may be multi-layered in order to increase the amount of light.

  The sealing layer 16 is laminated on the second electrode layer 15 and as described above by exposing a part of the first and second electrode layers 13 and 15 to the outside so that electricity can be applied from the outside. The first electrode layer 13, the organic light emitting layer 14, and the second electrode layer 15 are formed so as to cover the side surfaces of the first electrode layer 13, the organic light emitting layer 14, and the second electrode layer 15, so that the first electrode layer 13, the organic light emitting layer 14, and the second electrode together with the optical substrate 12. It is a member that seals the layer 15. The sealing layer 16 suppresses deterioration of the organic light emitting layer 14.

  The metal protective layer 17 is a layer that is laminated on the sealing layer 16 in a planar shape and protects the surface of the sealing layer 16, and is made of, for example, metal.

  As shown in FIGS. 1 and 2, an XYZ orthogonal coordinate system is set in which line segments along the horizontal direction, the vertical direction, and the thickness direction of the OLED panel 1 are set as the X axis, the Y axis, and the Z axis, respectively. , X-direction, Y-axis, Y-direction, Z-axis and Z-direction are appropriately used below.

  Referring to FIGS. 1 to 3, one main surface 18 of OLED panel 1 has a light emitting region 181 and a non-light emitting region 182. The light emitting region 181 faces the organic light emitting layer 14, and the light generated in the organic light emitting layer 14 is emitted from the light emitting region 181. The non-light emitting area 182 is located outside the light emitting area 181, and surrounds the light emitting area 181. The shapes of the light emitting area 181 and the non-light emitting area 182 are the same as the shape of the OLED panel 1. In this embodiment, since the OLED panel 1 has a rectangular shape, the light emitting area 181 and the non-light emitting area 182 have a rectangular shape.

  The OLED lighting device S includes a first metal member 21 and a second metal member 22 in addition to the OLED panel 1. The first metal member 21 will be described. FIG. 4 is a perspective view of the first metal member 21. With reference to FIGS. 1 and 4, the first metal member 21 has an opening 211, a first cover 212, a step 213, and an edge 214. The first metal member 21 is a plate-shaped member formed by thinly drawing a thin metal plate. By the shallow drawing, a flange, a side wall portion, and a bottom portion are formed on the sheet metal. The flange serves as the edge portion 214 and the side wall portion serves as the step portion 213. The bottom is punched, leaving a region close to the sidewall. A region of the bottom portion close to the side wall portion serves as the first cover portion 212, and a punched region serves as the opening portion 211.

  The OLED panel 1 is arranged in the space defined by the step portion 213.

  The opening 211 faces the light emitting region 181, and has the same size (almost the same) as the light emitting region 181. As a result, the light emitted from the light emitting region 181 passes through the opening 211 and is emitted to the outside.

  The first cover portion 212 is located outside the opening portion 211 (in other words, surrounds the opening portion 211) and covers the non-light emitting area 182. In this way, the non-light emitting area 182 is covered with the first cover portion 212 formed on the first metal member 21. Since the first cover part 212 is made of metal, it is harder than the light-shielding sheet, less likely to tear, does not peel off, and does not wrinkle. Therefore, even if an object hits the first cover portion 212 for some reason during the inspection, it is possible to prevent the non-light emitting region 182 from being chipped, and even if it is chipped, it is possible to prevent scattering.

  Since the first cover part 212 is made of metal, it has a light shielding property. Therefore, it is possible to prevent light from leaking from the non-light emitting area 182 without covering the non-light emitting area 182 with the light shielding sheet. Therefore, the step of attaching the light-shielding sheet to the non-light emitting area 182 is not necessary, so that the assembling property of the OLED lighting device S can be improved.

  The shape of the first cover portion 212 is rectangular and has four side portions 2121 to 2124. The width of one side portion 2121 is larger than that of the other side portions 2122 to 2124. A leaf spring 215 (an example of a pressing member) is formed at the center of the side portion 2121. The leaf spring 215 will be described later.

  The shape of the edge portion 214 is rectangular and has four side portions 2141 to 2144. The side portion 2141 is located outside the side portion 2121, the side portion 2142 is located outside the side portion 2122, the side portion 2143 is located outside the side portion 2123, and the side portion 2144 is located inside the side portion 2124. Located outside.

  The first metal member side mounting holes 216-1 and 216-2 penetrate through both ends of the side portion 2141. The side portion 2143 faces the side portion 2141. The first metal member side mounting holes 216-3 and 216-4 penetrate through both ends of the side portion 2143. The first metal member side attachment hole 216 is used to attach the OLED lighting device S to another member.

  A cutout 218 is formed in the center of the side portion 2141. In the side part 2141, for caulking, it is between the first metal member side mounting hole 216-1 and the cutout part 218, and between the first metal member side mounting hole 216-2 and the cutout part 218. The through holes 217-1 and 217-2 penetrate.

  In the side portion 2143, the caulking through holes 217-3 and 217-4 penetrate between the first metal member side mounting hole 216-3 and the first metal member side mounting hole 216-4. The caulking through hole 217-3 is located near the first metal member side mounting hole 216-3. The caulking through hole 217-4 is located near the first metal member side mounting hole 216-4.

  The second metal member 22 will be described. FIG. 2 shows the state in which the first metal member 21 is removed from the OLED lighting device S shown in FIG. 1 as described above, and the second metal member 22 is located under the OLED panel 1. . A substrate member 6 (FIG. 7) is arranged between the OLED panel 1 and the second metal member 22. The substrate member 6 is provided with wiring and the like for supplying electric power to the OLED panel 1. FIG. 5 is a perspective view of the second metal member 22.

  With reference to FIG. 5, the second metal member 22 has a flat plate shape and has four side portions 221 to 224 and a second cover portion 225 surrounded by these side portions 221 to 224. The second cover portion 225 covers the other main surface 19 (FIG. 3) of the OLED panel 1. Referring to FIG. 1, the casing 2 is composed of the first metal member 21 and the second metal member 22. The casing 2 houses the OLED panel 1. With reference to FIGS. 1, 4 and 5, in casing 2, each of side portions 2141 to 2144 of first metal member 21 is in contact with side portions 221 to 224 of second metal member 22. .

  With reference to FIGS. 2 and 5, the second metal member side mounting holes 226-1 and 226-2 pass through at both ends of the side portion 221. The side portion 223 faces the side portion 221. The second metal member side mounting holes 226-3 and 226-4 penetrate through both ends of the side portion 223. The second metal member side attachment hole 226 is used to attach the OLED lighting device S to another member.

  In the side portion 221, between the second metal member side attachment hole 226-1 and the center portion of the side portion 221, and between the second metal member side attachment hole 226-2 and the center portion of the side portion 221. , And caulking convex portions 227-1 and 227-2 are formed respectively. Cable protrusions 228-1 and 228-2 are formed at the center of the side portion 221. The cable protrusion 228 will be described later. The caulking convex portions 227-1 and 227-2 and the cable convex portions 222-1 and 228-2 are formed by half punching the side portion 221.

  On the side portion 223, caulking convex portions 227-3 and 227-4 are formed near the second metal member side mounting hole 226-3 and near the second metal member side mounting hole 226-4, respectively. Has been done. The caulking convex portions 227-3 and 227-4 are formed by half punching the side portion 223.

  Referring to FIGS. 1, 4 and 5, casing 2 is formed of first metal member 21 and second metal member 22. When the first metal member 21 and the second metal member 22 are aligned with each other, the caulking through holes 217-1 to 217-4 and the caulking convex portions 227-1 to 227-4 overlap each other, and The metal member side mounting holes 216-1 to 216-4 and the second metal member side mounting holes 226-1 to 226-4 overlap.

  Referring to FIG. 1, OLED panel 1, substrate member 6 (FIG. 7), and second metal member 22 on which cable 3 is arranged and first metal member 21 are aligned. In this state, the caulking convex portions 227-1 to 227-4 are fitted into the caulking through holes 217-1 to 217-4, whereby the first metal member 21 is fixed to the second metal member 22. It

  explain in detail. FIG. 6 is a sectional view showing the caulking convex portion 227 fitted in the caulking through hole 217. The planar shape of the caulking convex portion 227 and the planar shape of the caulking through hole 217 are rectangular. The caulking convex portion 227 is increased in size in the width direction from the tip end portion toward the base end portion. The size of the through hole 217 for crimping is constant in the width direction in the depth direction. The width of the tip portion of the caulking convex portion 227 is made slightly smaller than the width of the caulking through hole 217. When the caulking convex portion 227 is fitted into the caulking through hole 217, at least one of the base end portion of the caulking convex portion 227 and the caulking through hole 217 is plastically deformed, and the caulking convex portion 227 is caulked through hole. It cannot get out of 217. As a result, the first metal member 21 is fixed to the second metal member 22. As described above, in the casing 2, the convex portion (crimping convex portion 227) formed on the second metal member 22 has the through hole (crimping through hole 217) formed in the first metal member 21. The first metal member 21 is fixed to the second metal member 22 by having a plurality of places to be fitted in and crimping these places.

  There is a screw as a means for fixing the first metal member 21 to the second metal member 22. However, in the case of a screw, there is a risk that the screw will fall off and the dropped screw will mix into the inspection object. According to this embodiment, the first metal member 21 can be fixed to the second metal member 22 without using screws.

  The first metal member 21 is fixed to the second metal member 22 by caulking. Therefore, assembling property of the OLED lighting device S can be improved as compared with the case where the first metal member 21 is fixed to the second metal member 22 with the screw.

  The caulking convex portion 227 may be formed in the first metal member 21, and the caulking through hole 217 may be formed in the second metal member 22.

  In the casing 2, the step portion 213 serves as a side wall portion that forms a housing space for the OLED panel 1. Since the step portion 213 (side wall portion) is formed by drawing a sheet metal, the four side portions forming the step portion 213 (side wall) are continuous. Therefore, the strength of the step portion 213 (side wall) can be improved against bending and twisting.

  Next, the substrate member 6 will be described. FIG. 7 is a perspective view showing the substrate member 6 on which the OLED panel 1 is mounted. 8A to 8C show a configuration in which the cable 3 is removed from FIG. 7, FIG. 8A is a perspective view, and FIG. 8B is a cross-sectional view taken along the line I-I of FIG. 8A. FIG. 8C is a rear view of the substrate member 6.

  Referring to FIGS. 7 and 8, substrate member 6 is a member for supplying electric power supplied from outside via cable 3 to OLED panel 1. In the present embodiment, the board member 6 includes a plate-shaped main body portion 61 on which all or part of the OLED panel 1 is arranged, a plate-shaped attachment portion 62 for mounting the cable 3, and power supplied by the cable 3. Is provided for supplying power to the OLED panel 1.

  The main body 61 may have a larger size than the OLED panel 1, but for the sake of compactness, the main body 61 has substantially the same size as the OLED panel 1 in a plan view in the present embodiment. In the present embodiment, the main body 61 is divided into two at predetermined positions in the lateral direction (that is, the X-axis direction) of the OLED panel 1, and the pair of first and second electrode layers 13 and 15 (see FIG. 3). ) A pair of electrode terminals (electrode pads) provided on each (or a pair of electrode terminals (electrode pads) connected to the pair of first and second electrode layers 13 and 15 via respective wirings) ), A first main body portion 611 having a rectangular shape in a plan view in which a part of the OLED panel 1 is disposed, and a second main body portion 612 having a rectangular shape in a plan view in which the remaining portion of the OLED panel 1 is disposed. With. The lengths in the vertical direction (lengths in the Y direction) of the first and second body portions 611, 612 are substantially equal to the lengths in the vertical direction (length in the Y direction) of the OLED panel 1, and The sum of the lateral lengths of the second main body portions 611 and 612 (the sum of the X-direction lengths) is substantially equal to the lateral length of the OLED panel 1 (the X-direction length).

  In the present embodiment, the attachment portion 62 extends from the first body portion 611. More specifically, the attachment portion 62 extends from a part of the outer periphery of the first main body portion 611 in a predetermined size (size). More specifically, the attachment part 62 is part of one side along the vertical direction (Y axis) in the rectangular first main body part 611, and in the example shown in FIGS. 7 and 8, part of the center part of the one side ( It has a rectangular shape extending in the lateral direction (X direction) from the length shorter than the length of the one side. The attachment portion 62 may extend from a part of an arbitrary portion of the one side, such as a portion of one end portion of the one side of the rectangular first main body portion 611. That is, the attachment part 62 may be extended from the first main body part 611 at any position in the vertical direction (Y axis) on the one side. In the case where the cable 3 is directly attached to the attachment portion 62 by soldering, the predetermined size of the attachment portion 62 is such that at least an amount of solder not only for electrical connection but also for strengthening the connection strength is mounted. In the present embodiment, the size is such that at least the first connector 4 can be attached.

  Wiring not shown is printed on one main surface of each of the first main body 611 and the attachment 62, and the first main body 611, the attachment 62, and the wiring not shown in the drawing are not provided in the present embodiment. , And is integrally configured as a printed circuit board.

  One end of the cable 3 may be attached to the not-shown wiring in the attachment portion 62 with an amount of solder not only for electrical connection but also for increasing the connection strength, but in the present embodiment, It is attached with first and second connectors 4, 5. More specifically, the second connector 5, which is, for example, a male connector, is attached to one end of the cable 3, and the accessory portion 62 is electrically connected to the above-described wiring (not shown) so that, for example, on one main surface thereof. The first connector 4 of the female connector is attached. The other end of the cable 3 is directly or via a connector connected to a drive circuit for supplying power to turn on / off the OLED panel 1. In the example shown in FIGS. 7 and 8, a cable 3 having electric wires of a relatively small wire diameter is used for thinning, and the amount of electric power that can be supplied by one to two electric wires in this cable 3 is OLED. Since the amount of electric power required for the panel 1 is less than the required amount, the cable 3 is composed of two to four electric wires of two power supply lines and two ground lines. If the OLED panel 1 can supply electric power with electric wires of 1: 2, the cable 3 may be composed of electric wires of 1: 2.

  As shown in FIG. 8C, in the first main body portion 611 having such a configuration, the wiring (not shown) and the electrode terminals of the OLED panel 1 are electrically connected, and the attachment portion 62 has the attachment portion 62 in a top view. The OLED panel 1 is fixedly attached to one end portion on the back surface of the OLED panel 1 so as to protrude from the OLED panel 1 with an adhesive or the like. In this state, a step in the thickness direction (Z direction) is generated between the surface of the first main body 611 and the back surface of the OLED panel 1 to which the first main body 611 is not attached. Therefore, in the present embodiment, in order to eliminate this step, the second main body 612 having the same thickness as the first main body 611 is provided at the other end on the back surface of the OLED panel 1 to which the first main body 611 is not attached. It is fixedly attached to a portion (a remaining portion of the back surface of the OLED panel 1 excluding the one end portion) with an adhesive or the like. As described above, by configuring the main body portion 61 with the first main body portion 611 of the printed circuit board and the second main body portion 612 of the plate material which is not the printed circuit board, when the main body portion 61 is configured with one printed circuit board. In comparison, it is possible to reduce costs.

  The main body 61 may be composed of one printed circuit board. When the light emitting region 181 has a relatively small area, the OLED panel 1 is configured to include a pair of electrode terminals provided at one place as in the present embodiment. When the area is relatively large, unevenness in brightness occurs due to a voltage drop that occurs in the electrode layer formed of the transparent electrode member in the OLED panel 1. Therefore, a plurality of pairs of electrode terminals are provided at a plurality of locations. May be done. Particularly in such a case, the main body 61 is composed of one printed circuit board. Further, the main body portion 61 may be configured by only the first main body portion 611, omitting the second main body portion 612 so as to arrange a part of the OLED panel 1. In this case, as described above, a step in the thickness direction (Z direction) occurs between the surface of the first main body portion 611 and the back surface of the OLED panel 1 to which the first main body portion 611 is not attached. In order to eliminate this step, a double-sided tape having the same thickness as the first main body 611, an adhesive, or the like may be provided on the back surface of the OLED panel 1 to which the first main body 611 is not attached. As a result, the back surface of the OLED panel 1 to which the first main body 611 is not attached and the casing 2 are filled with a double-sided tape having the same thickness as the first main body 611, an adhesive, or the like.

  2 and 8C, the attachment portion 62 is fixed on the second metal member 22 by the fixing member 10. The fixing member 10 is, for example, a double-sided tape or an adhesive.

  The cable 3 is pressed against the second metal member 22 by the leaf spring 215 (FIG. 1). The leaf spring 215 will be described. With reference to FIGS. 1 and 4, the leaf spring 215 is formed when the cutout portion 218 is formed. Specifically, two slit-shaped notches are formed in the central portion of the side portion 2141 at intervals. The two cuts pass through the central portion of the step portion 213 between the side portions 2141 and 2121 and extend to the edge of the central portion of the side portion 2121. As a result, the notch 218 and the plate-shaped cantilever which is the source of the plate spring 215 are formed. The tip of this cantilever is cut at a position where it hits the cable protrusion 228-2. As a result, the leaf spring 215 is completed.

  As described above, the first metal member 21 has the leaf spring 215 (pressing member that presses the cable 3) on the second metal member 22 at a position outside the position of the attachment portion 62 (FIG. 2). Of the example) is included. Since the attachment portion 62 is a portion where the cable 3 and the substrate member 6 are connected, when the cable 3 is pulled, the cable 3 is easily detached from this portion. The leaf spring 215 presses the cable 3 on the second metal member 22 at a position outside the position of the attachment portion 62. Therefore, the resistance of the cable 3 to pulling can be further increased.

  With reference to FIG. 1 and FIG. 2, two cable protrusions 228 (first protrusions and second protrusions) are formed on the central portion of the side portion 221. The two convex portions 228 for cables are located at intervals along the direction in which the cable 3 extends. The cable 3 is placed on the two cable protrusions 228. The cable 3 is pressed between the two cable protrusions 228 (between the first protrusion and the second protrusion).

  Thus, in the state where the cable 3 is placed on the cable convex portion 228-1 and the cable convex portion 228-2, the cable 3 is moved by the plate spring 215 by the cable convex portion 228-1 and the cable convex portion. Since it is pressed against the 228-2, the cable 3 is bent in a valley shape (in other words, a U shape) at this portion. Since the leaf spring 215 presses this valley-shaped bent portion, the contact area between the pressing member and the cable 3 becomes large, and as a result, the resistance of the cable 3 to pulling can be further increased.

  A modified example of the embodiment will be described. FIG. 9 is a perspective view showing the overall configuration of an OLED lighting device S1 according to a modification. FIG. 10 is a perspective view of the OLED lighting device S1 shown in FIG. 9 viewed from the back side. Referring to FIG. 1, in the OLED lighting device S according to the embodiment, a step portion 213 is formed on the first metal member 21. With reference to FIG. 10, in the OLED lighting device S1 according to the modification, the step portion 220 is formed on the second metal member 22. The step portion 220 has the same function as the step portion 213, and the OLED panel 1 (FIG. 2) is arranged in the space defined by the step portion 220. In FIG. 10, since the second metal member 22 is viewed from the back side, the space defined by the step portion 220 has a convex shape. When the second metal member 22 is viewed from the front side, the space defined by the step portion 220 has a concave shape.

  With reference to FIGS. 9 and 10, the side portions 2141 to 2144 of the first metal member 21 are not continuous but separated. The side portions 2141 to 2144 are bent toward the second metal member 22 side. A fixing through hole 219 is formed in each of the side portions 2141 to 2144.

  explain in detail. Fixing through holes 219-1 and 219-2 are formed in the side portion 2141. The cable 3 is arranged between the fixing through hole 219-1 and the fixing through hole 219-2. A fixing through hole 219-3 is formed in the side portion 2142, a fixing through hole 219-4 is formed in the side portion 2143, and a fixing through hole 219- is formed in the side portion 2144. 5 is formed.

  The side portion 2141 and the side portion 2143 are a pair of facing side portions, the fixing through holes 219-1 and 219-2 are first through holes, and the fixing through hole 219-4 is second. It is a through hole. The side portion 2142 and the side portion 2144 are a pair of facing side portions, the fixing through hole 219-3 is the first through hole, and the fixing through hole 219-5 is the second through hole. .

  A portion of the side portion 2141 through which the cable 3 passes is cut out.

  A claw portion 229 is formed on each of the side portions 221 to 224 of the second metal member 22. explain in detail. A claw portion 229-1 inserted into the fixing through hole 219-1 is formed on the side portion 221, and a claw portion 229-2 inserted into the fixing through hole 219-2 is formed. A claw portion 229-3 to be inserted into the fixing through hole 219-3 is formed on the side portion 222. A claw portion 229-4 to be inserted into the fixing through hole 219-4 is formed on the side portion 223. On the side portion 224, a claw portion 229-5 to be inserted into the fixing through hole 219-5 is formed.

  When the first metal member 21 and the second metal member 22 face each other, the claw portion 229 slightly projects from the fixing through hole 219. In this state, the first metal member 21 is pushed toward the second metal member 22, so that the claw portion 229 is inserted into the fixing through hole 219. explain in detail. The side portion 2141 is slightly bent outward by the claw portions 229-1 and 229-2, and the claw portions 229-1 and 229-2 are inserted into the fixing through holes 219-1 and 219-2. Similarly, the side portion 2142 is slightly bent outward by the claw portion 229-3, and the claw portion 229-3 is inserted into the fixing through hole 219-3. The side portion 2143 is slightly bent outward by the claw portion 229-4, and the claw portion 229-4 is inserted into the fixing through hole 219-4. The side portion 2144 is slightly bent outward by the claw portion 229-5, and the claw portion 229-5 is inserted into the fixing through hole 219-5. As described above, the first metal member 21 is fixed to the second metal member 22.

  Although one combination of the fixing through hole 219 and the claw portion 229 is provided on three side portions of the four side portions of the OLED lighting device S1, a plurality of this combination may be provided.

  Members (fixing through holes 219, claws 229) for fixing the first metal member 21 to the second metal member 22 are provided on the four side portions of the OLED lighting device S1. Not limited to. A member for fixing the first metal member 21 to the second metal member 22 may be provided on a pair of opposing side parts of the four side parts. explain in detail. The first metal member 21 is fixed to the second metal member 22 by the combination of the fixing through hole 219-3 and the claw portion 229-3 and the combination of the fixing through hole 219-5 and the claw portion 229-5. May be done. In addition, a combination of the fixing through hole 219-1 and the claw portion 229-1, a combination of the fixing through hole 219-2 and the claw portion 229-2, and a fixing through hole 219-4 and a claw portion 229-4. Depending on the combination, the first metal member 21 may be fixed to the second metal member 22.

S, S1 OLED lighting device 1 OLED panel 2 Casing 21 First metal member 211 Opening 212 First covers 2121 to 2124 Sides 213 Steps 214 Edges 2141 to 2144 Sides 215 Leaf spring 216 (216-1) 216-4) First metal member side mounting hole 217 (217-1 to 217-4) Caulking through hole 218 Notch 219 (219-1 to 219-5) Fixing through hole 22 Second metal Member 220 Steps 221 to 224 Sides 225 Second cover 226 (226-1 to 226-4) Second metal member side mounting hole 227 (227-1 to 227-4) Caulking convex 228 (228) -1,228-2) Cable convex portion 229 (229-1 to 229-5) Claw portion 3 Cable 6 Board member 61 Main body portion 62 Attachment portion 10 Fixing member

Claims (10)

An OLED lighting device for inspection,
An OLED panel having a light emitting region and one main surface including a non-light emitting region located outside the light emitting region;
A casing accommodating the OLED panel,
The said casing is an OLED lighting device containing the 1st metal member in which the 1st cover part which covers the said non-light-emission area | region and the opening part which opposes the said light-emission area | region was formed.   The OLED lighting device according to claim 1, wherein a step portion that surrounds the OLED panel is further formed on the first metal member.   The OLED lighting device according to claim 1, wherein the casing further includes a flat plate-shaped second metal member that covers the other main surface of the OLED panel opposite to the one main surface.   The casing has a convex portion formed on one of the first metal member and the second metal member, has a portion fitted into a through hole formed on the other, and by crimping the portion, The OLED lighting device according to claim 3, wherein the first metal member is fixed to the second metal member. The OLED lighting device further includes a substrate member,
The substrate member includes a main body part for disposing all or a part of the OLED panel, an attachment part for attaching a cable, and wiring for supplying electric power supplied by the cable to the OLED panel. Item 5. The OLED lighting device according to any one of items 1 to 4.   The OLED lighting device according to claim 5, wherein the OLED lighting device further includes a fixing member that fixes the appendage to the second metal member.   The first metal member further includes a pressing member that presses the cable on the second metal member at a position outside the position of the appendage, quoting claim 3 or 4. The OLED lighting device according to claim 5 or claim 6. The second metal member includes a first convex portion and a second convex portion arranged at intervals along a direction in which the cable extends from a position where the attachment portion is fixed,
In a state where the cable is placed on the first convex portion and the second convex portion, the cable is moved between the first convex portion and the second convex portion by the pressing member. The OLED lighting device according to claim 7, which is pressed down. The casing includes a second metal member that covers the other main surface of the OLED panel opposite to the one main surface,
The OLED lighting device according to claim 1, wherein a stepped portion that surrounds the OLED panel is formed on the second metal member. In the first metal member, a pair of facing side portions are bent, a first through hole is formed in one of the pair of side portions, and a second through hole is formed in the other side portion. Is formed,
In the second metal member, a first claw portion and a second claw portion are formed on a pair of opposing side portions, respectively,
The first claw portion is inserted into the first through hole, and the second claw portion is inserted into the second through hole, so that the first metal member becomes the second metal member. The OLED lighting device according to claim 9, which is fixed to the.

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