JPWO2014038279A1 - Lighting device - Google Patents

Abstract

The problem of the present invention is that it is light and thin, is easy to attach and detach a light emitter, is excellent in earthquake resistance, flame resistance and ease of maintenance (easy to replace), and additionally has a soundproof function. It is to provide a planar lighting device. The illuminating device of the present invention is an illuminating device comprising a wall member 1 having a groove portion G installed on a wall surface and a flexible planar illuminating member 3 having a structure that is hooked on the groove portion G of the wall member 1. The wall member 1 has a plurality of power supply terminals 2 in the groove portion G. When the planar illumination member 3 is hooked in the groove portion G of the wall member 1, the power supply terminal 2 is provided. It has the terminal 7 for electric power reception in the position which can receive electric power more, It is characterized by the above-mentioned.

Description

  The present invention relates to a lighting device provided on a wall surface of a room, and in particular, is equipped with a flexible organic electroluminescence element panel as a planar lighting member, and is installed continuously in parallel in an indoor lighting of an aircraft. It relates to a possible lighting device.

  Various lighting technologies are applied in various environmental spaces where people are active, and lighting technologies corresponding to each environment are used. Conventionally used lighting methods include ceiling lights (ceiling-mounted / ceiling-mounted), cord pendants (ceiling hanging type), brackets (wall-mounted / auxiliary lighting), downlights It is an illumination means centering on a (ceiling-embedded small lighting fixture) and the like, and various illumination members are used according to the purpose of illumination and the size and shape of the environment to be applied.

  In recent years, horizontally long lighting devices (illumination systems) are arranged continuously on the walls of living spaces, corridors, roads, tunnels, inside moving bodies, etc., according to the movement lines of people moving in the horizontal direction. .

  Conventionally, as lighting means, point light source type lighting fixtures such as incandescent lamps, mercury lamps, fluorescent lamps, and LEDs have been mainly used. For example, point light sources such as mercury lamps installed on the wall surface inside the tunnel However, there are concerns that the driver will be dazzled by visual disturbances, color temperature differences, and bright lines.

  On the other hand, interior lighting installed inside moving objects such as airplanes, trains, buses, cars, ships, etc. is lightweight, excellent in earthquake resistance, hard to break or fall, and is safe even if dropped Is required. In a narrow indoor space, an illumination unit equipped with a planar light emitter is more preferable from the viewpoint of uniformly illuminating a wide area as much as possible.

  As a method that takes such requirements into consideration, a lighting device suitable for aircraft cabin lighting has been disclosed (for example, see Patent Document 1).

  The method described in Patent Document 1 is a method in which an organic electroluminescence lighting panel, which is a planar light emitter, is arranged on the ceiling of an aircraft cabin in a direction parallel to the axis of the aircraft to illuminate the cabin. is there. According to the method described in Patent Document 1, an organic material that is light in weight, low in power consumption, and high in safety (low ignition, etc.) in a guest room as compared with fluorescent lamp lighting and LED lighting conventionally used as guest room lighting. By mounting the electroluminescence element panel as a lighting device, it is said that high safety as an aircraft is ensured, and weight reduction and power saving of the aircraft are achieved. However, the method described in Patent Document 1 is a method in which the projector is completely fixed to the aircraft wall surface, and the replacement work when the light emitter fails is complicated and extremely inconvenient in handling. In addition, Patent Document 1 does not show a description or a proposal regarding specific aspects regarding weight reduction, earthquake resistance, breakage resistance, drop resistance, and safety.

JP 2011-140264 A

  The present invention has been made in view of the above-mentioned problems, and the solution is to reduce the weight and reduce the thickness of the lighting member, to easily attach and remove the lighting member, and to provide earthquake resistance, flame resistance, and ease of maintenance (easy replacement). It is to provide a horizontally long and planar illuminating device that is excellent in performance and also has a soundproofing function.

  As a result of intensive studies in view of the above problems, the present inventor is composed of a wall member having a groove portion to be installed on a wall surface and a flexible planar illumination member having a structure that is latched on the groove portion of the wall member. The wall member has a plurality of power supply terminals in the groove portion, and the planar illumination member receives power from the power supply terminal when hooked in the groove portion of the wall member. Lightweight and thin film with a lighting device characterized by having a power receiving terminal at a position where it is possible to easily attach and remove the light emitter, and is earthquake resistant, flame retardant, and easy to maintain (easy to replace ) And a horizontally long and planar lighting device having a soundproofing function.

  That is, the said subject of this invention is solved by the following means.

  1. A lighting device comprising a wall member having a groove portion to be installed on a wall surface and a flexible planar illumination member having a structure to be hooked on the groove portion of the wall member, wherein the wall member is disposed on the groove portion. A plurality of power supply terminals, and the planar illumination member has a power receiving terminal at a position where it can receive power from the power supply terminal when the planar illumination member is hooked in the groove of the wall member. A lighting device comprising:

  2. The lighting device according to item 1, wherein the planar illumination member is an organic electroluminescence element panel including an organic electroluminescence element as a light emitter.

  3. The said planar illumination member is comprised from the said electric power receiving terminal, a flexible organic electroluminescent element panel, and a flexible holding member, The 1st item | term or 2 characterized by the above-mentioned. Lighting device.

  4). 4. The lighting device according to claim 3, wherein the material constituting the flexible holding member is at least one selected from a foamed resin material, a fibrous material, and a porous material.

5. The distance between the plurality of power supply terminals for the wall member has a L _1, when the maximum width of the power receiving terminal included in the surface illumination member was L _2, satisfying the relationship L _1> L ₂ The lighting device according to any one of Items 1 to 4, wherein the lighting device is characterized in that

6). The distance between the plurality of power receiving terminals having said surface illumination member and L _4, when the maximum width of the power supply terminal to which the wall member has been with L _3, satisfy the relationship of L _4> L ₃ The lighting device according to any one of items 1 to 5, wherein

  7). The lighting device according to any one of Items 2 to 6, wherein the organic electroluminescence element panel has a light transmittance T at a wavelength of 550 nm in a non-light emitting state of 65% or more.

  8). The lighting device according to any one of Items 2 to 7, wherein the organic electroluminescence element panel can be toned.

  9. The first to eighth items, wherein the wall surface is an inner wall surface constituting a moving body, and a light emitting surface of the planar illumination member is arranged in a concave shape on the indoor side of the moving body. The lighting device according to any one of the items up to.

  By the above means of the present invention, the light weight and thin film, the light emitter can be easily attached and detached, and it has excellent earthquake resistance, flame retardancy and ease of maintenance (easy to replace), and also has a soundproof function. Thus, a planar lighting device can be provided.

Sectional drawing which shows an example of the illuminating device with which the interior of the guest room was equipped A perspective view of an example of a planar lighting member constituting a lighting device mounted in a passenger compartment The perspective view which shows an example which has arrange | positioned the planar illumination member continuously in the horizontal direction of a wall member The schematic diagram which shows an example of the pattern which arrange | positions several planar illumination member in the horizontal direction of a wall member The schematic diagram which shows another example of the pattern which arrange | positions several planar illumination member in the horizontal direction of a wall member The schematic diagram which shows another example of the pattern which arrange | positions several planar illumination member in the horizontal direction of a wall member The schematic diagram which shows another example of the pattern which arrange | positions several planar illumination member in the horizontal direction of a wall member Schematic sectional view showing an example of a method of mounting a planar illumination member on a groove of a wall member Schematic sectional view showing another example of a method for mounting a planar illumination member on a groove of a wall member Schematic sectional view showing an example of the arrangement of the power supply terminals of the wall member and the power reception terminals of the planar illumination member Schematic sectional view showing an example of the configuration of an organic electroluminescence element applicable to the present invention

  The lighting device of the present invention is a lighting device including a wall member having a groove portion installed on a wall surface and a flexible planar lighting member having a structure hooked on the groove portion of the wall member. The member has a plurality of power supply terminals in the groove, and the planar illumination member is capable of receiving power from the power supply terminal when hooked on the groove of the wall member. And a power receiving terminal. This feature is a technical feature common to the inventions according to claims 1 to 9.

  As an embodiment of the present invention, the planar illumination member includes an organic electroluminescence element (hereinafter also referred to as an organic EL element) as a light emitter, from the viewpoint that the objective effect of the present invention can be further expressed. An organic electroluminescence element panel (hereinafter also referred to as an organic EL element panel) is preferable from the viewpoint of obtaining a lighting device that is reduced in weight and thickness and is excellent in earthquake resistance and flame retardancy.

  Furthermore. It is preferable that the planar illumination member is an aspect configured of at least the power receiving terminal, a flexible organic electroluminescence element panel, and a flexible holding member.

  In addition, the flexible holding member is at least one selected from a foamed resin material, a fibrous material, and a porous material, so that the planar light emitting member can be easily attached to and detached from the groove portion of the wall member. From the viewpoint of providing a soundproofing function.

Further, the distance between the plurality of power supply terminals for the wall member has a L _1, when the maximum width of the power receiving terminal included in the surface illumination member was L _2, L _1> L ₂ relationship Or when the distance between the plurality of power receiving terminals of the planar illumination member is L ₄ and the maximum width of the power supply terminal of the wall member is L ₃ , L ₄ > L _Satisfying the relationship ₃ is preferable from the viewpoint of preventing an unauthorized short circuit between the power supply terminal provided in the groove and the power reception terminal of the planar illumination member.

  In addition, the organic electroluminescence element panel has a light transmittance T at a wavelength of 550 nm in a non-light-emitting state of 65% or more, or is configured to be toned, so that the organic electroluminescence element panel when turned off By setting the surface color or the color of the substrate of the light-transmitting organic electroluminescence element panel to a color tone similar to that of the inner wall material, it is possible to form an indoor wall surface without being aware of the presence of the lighting device when the light is turned off. This is a preferred embodiment from the viewpoint.

  Moreover, it is preferable that the said wall surface is an inner wall surface which comprises a moving body, and the light emission surface of the said planar illumination member is a structure arrange | positioned by curving concavely on the indoor side of this moving body.

  In addition, the lighting device of the present invention has various technical features and advantages as described below.

  1) Since the lighting device of the present invention has a configuration in which a planar light emitting member is fitted and fixed in a groove portion of a wall member, it has a characteristic that it is difficult to drop off due to vibration or the like. Even if you receive it, it has a high level of safety that will not drop out.

  2) By arranging a plurality of lighting devices of the present invention having the same shape in the horizontal direction, a lighting device having a desired length can be freely provided in a horizontally long form.

  3) A planar illumination member according to the present invention includes a flexible and flexible thin-film organic EL element panel, and a flexible and flexible holding member (specifically, a porous material, a foamed resin material, A lightweight material such as a fibrous material) and is lightweight and flexible. In addition, as described above, the holding member is made of a material such as a porous material, a foamed resin material, or a fibrous material, so that an effect of absorbing noise in the room and a sound insulation effect from the outside can be exhibited. .

  4) In the planar lighting member according to the present invention, both the organic EL element panel and the holding member can be made of a flame-retardant or non-flammable material, and can be provided with fire resistance against fire or the like.

  5) The planar light-emitting member according to the present invention has a structure in which the planar light-emitting member is fixed by being fitted into the groove portion of the wall member, so that the flexible planar light-emitting member can be easily attached and detached, and the organic EL element panel Even when a light emission failure occurs, it can be promptly replaced.

  6) In the illumination device of the present invention, a large number of planar illumination members can be arranged continuously in the horizontal direction. Can be adjusted freely, and a variety of interior lighting can be produced.

  7) The illumination device of the present invention is a planar illumination member. For example, even when installed in a tunnel or the like, it is a light source that is gentle to the driver and does not interfere with driving such as visual impairment.

  Hereinafter, the present invention, its components, and modes and modes for carrying out the present invention will be described in detail with reference to the drawings. In addition, "-" shown in this invention is used in the meaning which includes the numerical value described before and behind that as a lower limit and an upper limit.

《Lighting device》
Below, the embodiment of the illuminating device of this invention is described using a figure.

  FIG. 1A is a cross-sectional view illustrating an example of a lighting device mounted in a room, and FIG. 1B is a perspective view illustrating an example of a configuration of a planar lighting member included in the lighting device of the present invention.

  As shown in FIG. 1A, the lighting device of the present invention includes a wall member 1 constituting a wall surface and a planar illumination member 3, and the planar illumination member 3 can be freely attached to and detached from the wall member 1. It has a structure that can be performed.

  The wall member 1 has upper and lower groove portions G, and a necessary number of power supply terminals 2 that are contact points of a plurality of spring systems are arranged in each groove portion G. These power supply terminals 2 are connected to a power supply (not shown). As will be described later, the power supply terminal 2 has anodes and cathodes alternately arranged in the length direction, and the upper and lower power supply terminals 2 have different polar electrodes at opposite positions. Is preferred.

  A planar illumination member 3 shown in FIG. 1A and FIG. 1B is mainly a flexible organic EL element panel 4 that is a light emitter, and the same flexible for fixing and holding the organic EL element panel 4. The holding member 5 and the power receiving terminal 7 (7A, 7B) for supplying power to the organic EL element panel 4 are provided. The organic EL element panel 4 and the power receiving terminal 7 include the holding member 5. Are connected by wiring 6. In the planar illumination member 3, the power receiving terminal 7 has an anode (for example, a power receiving terminal 7A) and a cathode (for example, a power receiving terminal 7B) alternately in the length direction. In addition, the upper and lower power receiving terminals 7 are also arranged with electrodes of different polarities at opposing positions.

  When the planar illumination member 3 is attached to the wall member 1 via the groove G, the power supply terminal 2 provided on the wall member 1 and the power receiving terminal 7 included in the planar illumination member 3 are provided. Connected, power is supplied to the organic EL element panel 4 from a power supply power source (not shown), and surface emission occurs.

  There is no restriction | limiting in particular as a material which comprises the wall member 1, Each optimal material for comprising a wall surface can be selected.

  For example, as an inner wall of a tunnel or a road wall surface, a plaster board, concrete, mortar, brick, tile, ceramics, etc. can be appropriately selected and used in addition to the plastic material described later. The wall member itself need not be particularly flexible.

  On the other hand, as materials constituting the inner walls of indoor walls and moving aircraft, trains, buses, automobiles, ships, etc., flame retardant or non-flammable plastic materials are mainly used from the viewpoint of fire safety. Used, for example, polyethylene (PE resin), high density polyethylene resin, medium density polyethylene resin, low density polyethylene resin, polypropylene (PP) resin, polyvinyl chloride (PVC) resin, polyvinylidene chloride resin, polystyrene (PS) resin , Polyvinyl acetate (PVAc) resin, Teflon (registered trademark) (polytetrafluoroethylene, PTFE), ABS resin (acrylonitrile butadiene styrene resin), AS resin, acrylic resin (PMMA), polyamide (PA) resin, nylon, polyacetal (POM) resin, polycarbonate (PC) resin, modified Polyphenylene ether (m-PPE, modified PPE, PPO) resin, polybutylene terephthalate (PBT) resin, polyethylene terephthalate (PET) resin, glass fiber reinforced polyethylene terephthalate (GF-PET) resin, cyclic polyolefin (COP) resin, polyphenylenesulfur Fido (PPS) resin, polytetrafluoroethylene (PTFE) resin, polysulfone resin, polyether sulfone resin, amorphous polyarylate resin, liquid crystal polymer, polyether ether ketone resin, thermoplastic polyimide (PI) resin, polyamideimide ( PAI) resin and the like can be used.

  In addition, the detailed structure of the organic EL element panel 4 and the holding member 5 which comprise the planar illumination member 3 is mentioned later.

  Next, the arrangement pattern of the planar illumination member 3 in the illumination device of the present invention will be described.

  FIG. 2 is a perspective view showing an example in which the planar illumination members 3 are arranged continuously in the horizontal direction of the wall member.

  In the planar illumination device shown in FIG. 2, the planar illumination member 3 composed of the organic EL element panel 4 and the holding member 5 is disposed in the lateral direction in the groove portion of the wall member 1 curved in a concave shape in the indoor space. A configuration in which three sheets are continuously hooked and arranged is shown. At this time, the power receiving terminal 7 has the anodes 7A and the cathodes 7B alternately arranged on the upper stage side in the length direction, and the power receiving terminals 7 (7A and 7B) on the lower stage side. Electrodes of different polarities are arranged at positions facing the upper power receiving terminal 7.

  3A to 3D are schematic diagrams illustrating various pattern examples in which a plurality of planar illumination members are arranged in the direction of the horizontal position of the wall member.

  The pattern shown in FIG. 3A is the same arrangement method as described in FIG. 2, and a plurality of rectangular four-contact type planar illumination members 3A are continuously arranged in the lateral direction of the groove portion of the wall member 1. This is an example of forming a lighting device. In this arrangement pattern, a pair of power supply and demand terminals 10 (anode terminals) composed of a power supply terminal 2 provided in the groove of the wall member 1 and a power supply terminal 7 provided in the planar illumination member 3A. The pair of terminals is called 10A and the pair of cathode terminals is called 10B.) The anode terminal pair 10A and the cathode terminal pair 10B are alternately arranged on the upper stage side, and the upper power supply / demand terminal pair 10A is also arranged on the lower stage side. Terminal pairs having opposite polarities are provided at positions facing 10B. By setting it as such a structure, even if the top and bottom of planar illumination member 3A are reversed and arrange | positioned, it can be set as the structure which does not have a trouble in particular.

  In addition, for example, the anode terminal pair 10A may be disposed on the entire upper stage side, and the cathode terminal pair 10B may be disposed on the entire lower stage side. Since the arrangement direction of the member 3A is limited to one direction, it is necessary to take a measure that cannot be inserted in the reverse arrangement. Therefore, it is preferable that the anode terminal pairs 10A and the cathode terminal pairs 10B are alternately arranged in the upper and lower stages as shown in FIG. 3A.

  3B and 3C, as a form of the four-contact type planar illumination member 3, a diamond-shaped four-contact type planar illumination member 3B or a four-contact type planar illumination having a semicircular end. An example in which the members 3C are continuously arranged in the horizontal direction is shown. By providing such a variation of the form, various design properties according to the purpose can be exhibited.

  The arrangement of the planar illumination members 3 shown in FIG. 3D includes a rectangular four-contact type planar illumination member 3A similar to that shown in FIG. 3A and, for example, a two-contact type planar illumination having a half area. An example in which the members 3D are alternately arranged is shown. By arranging the planar illumination members 3A and 3D having such different characteristics, it is possible to change the arrangement of the light emission pattern and the color tone (light emission color).

  In the lighting device of the present invention, the organic EL element panel and the holding member constituting the planar lighting member are both made of a flexible material, and can be easily attached to and detached from the groove portion of the wall member. Is one of the features.

  FIG. 4 is a schematic cross-sectional view showing an example of a procedure for mounting the planar illumination member according to the present invention in the groove portion of the wall member according to the present invention.

  The mounting method 1 shown in step (a-1) and step (a-2) shown in FIG. 4 shows an example of a mounting method when the groove part G of the wall member 1 has a relatively shallow structure.

  In step (a-1) shown in FIG. 4, the planar illumination member 3 according to the present invention includes the flexible holding member 5, the flexible organic EL element panel 4, and the power supply as described above. Step (a-2) shown in FIG. 4, which is composed of the terminal 7 and is pressed in the direction of the arrow 20 while applying pressure from above and below the planar lighting member 3 having flexibility as a whole and bending it into a concave shape. As shown in FIG. 2, the respective ends of the planar illumination member 3 are inserted into the relatively shallow groove G, and the power supply amount terminal 2 provided on the wall member 1 and the power supply terminal of the planar illumination member 3 are provided. This is a method of attaching to the wall member 1 so that 7 contacts.

  In the mounting method 2 shown in step (b-1) and step (b-2) shown in FIG. 4, a method of mounting the planar illumination member 3 according to the present invention on the wall member 1 having a relatively deep groove G. An example is shown.

  First, as indicated by an arrow 21, the upper end of the planar illumination member 3 is inserted into the groove G at the top of the wall member 1, and then the entire planar illumination member 3 is applied in the direction of the arrow 22. The lower end portion of the planar illumination member 3 is inserted into the groove portion G below the wall member 1 while being compressed, and is attached in the form as shown in step (b-2) of FIG.

  FIG. 5 is a schematic cross-sectional view showing another example of a method for mounting the planar illumination member in the groove portion of the wall member.

  As shown in step (a), as shown in step (a), the mounting method of the planar illumination member 3 shown in FIG. Then, it is inserted into the groove part G of the wall member 1 (the direction of the arrow 23). Next, as shown in step (b), a force is applied in the direction of the arrow 24 to curve the planar illumination member 3 in a convex state, and then the lower end of the planar illumination member 3 is moved in the direction of the arrow 25. Then, as shown in step (c), with the planar illumination member 3 curved in a convex state, the lower end is made into the groove G at the lower end of the wall member 1 while applying pressure from above and below to the planar illumination member. Attach and apply force from the direction of the arrow 26. Finally, as shown in step (d), the planar illumination member 3 is converted from a convex state to a concave state and attached to the wall member 1.

  In this invention, as a structure of the power supply terminal of the wall member 1 which comprises the illuminating device of this invention, and the electric power supply-and-demand terminal which a planar illumination member comprises, either of two conditions prescribed | regulated below is carried out. Satisfaction is preferable from the viewpoint of preventing occurrence of electrical troubles such as a short circuit (short circuit) due to erroneous contact of the power supply terminals.

The conditions specified in the first, the distance between the plurality of power supply terminals 2 the wall element 1 has a (interval) and L _1, the maximum width of the power receiving terminal 7 included in the spread illuminating member 3 L _{When it is 2} , it is preferable to satisfy the relationship defined by the following formula (1).

Formula (1)
L ₁ > L ₂
More specifically, the maximum width L ₂ of the power receiving terminal 7 included in the planar illumination member 3 is 0.3 to 0.9 times the distance L ₁ between the power supply terminal 2 of the wall member 1 has Preferably, it is in the range of 0.45 to 0.75 times.

As the conditions specified in the second, the distance between the plurality of power receiving terminals 7 with the surface illumination member 3 and L _4, the maximum width of the power supply terminal 2 of the wall member 1 has L ₃ It is preferable to satisfy the relationship defined by the following formula (2).

Formula (2)
L ₄ > L ₃
More specifically, the maximum width L ₃ of the power supply terminal 2 included in the wall member 1 is 0.3 to 0. 0 of the distance L ₄ between the plurality of power reception terminals 7 included in the planar illumination member 3. It is preferably in the range of 9 times, more preferably in the range of 0.45 to 0.75 times.

  By satisfying the condition defined by the above formula (1) or formula (2), when the planar illumination member 3 is mounted on the wall member 1, a failure such as a short circuit due to an improper contact between different electrodes is prevented.

  The conditions defined above will be further described with reference to the drawings.

  FIG. 6 is a schematic cross-sectional view showing an example of the arrangement of the power supply terminals of the wall member and the power reception terminals of the planar illumination member.

  As the configuration of the lighting device shown in FIG. 6, the arrangement shown in FIG. 3A will be described as an example.

  The lighting device shown in FIG. 6 has the same arrangement pattern as described in FIGS. 2 and 3A, and a plurality of rectangular four-contact type planar lighting members 3 are continuously arranged to form the lighting device. The structural example is shown as a schematic cross-sectional view when observed from the front.

  In FIG. 6, the wall member 1 is provided with a pair of power supply terminals 2 arranged vertically at two locations of a single planar illumination member 3. On the other hand, in the planar illumination member 3, the organic EL element panel 4 is stuck on the holding member 5, and a pair of power receiving terminals 7 each composed of an anode and a cathode are provided at two locations on the upper and lower portions, respectively. It is provided and connected to electrodes (anode electrode and cathode electrode) that the organic EL element panel 4 constitutes via wiring (not shown).

  In addition, in order to place the planar illumination member 3 at an accurate position of the wall member 1, the wall member 1 side has female latch pin receiving portions 8A and 9A, and the planar illumination member 3 has an anchor. The latch pins 8B and 9B functioning as (錨) are respectively provided on the upper and lower sides. By providing such a latching pin mechanism, the planar illumination member 3 can be arranged at an accurate position, and the power supply terminal 2 of the wall member 1 and the power receiving terminal 7 of the planar illumination member 3 are provided. It can be reliably contacted.

  At this time, from the viewpoint of preventing misplacement of the planar illumination member 3, for example, a latch pin and a latch pin receiving portion near the anode (for example, a semicircular shape in 8A and 8B) and a cathode near the cathode It is preferable to use different shapes for the latch pin and the latch pin receiving portion (for example, a rectangular shape of 9A and 9B).

In FIG. 6, L ₁ , which is the electrode interval between the pair of power supply terminals 2 constituting the wall member 1, is the maximum value (basically, the width of the power receiving terminal 7 constituting the planar illumination member 3. The power receiving terminal 7 is designed to have the same width, but when the power receiving terminal 7 is formed with a different width, the maximum value is set to L ₂ , where L ₁ > it is preferable to satisfy the relationship of _{L 2.} For example, even when the power supply terminal 2 is disposed between the power reception terminals 7, the power supply terminal 2 and the pair of power reception terminals 7 constituting the anode and the cathode simultaneously. It means that there is no contact.

Similarly, when the electrode interval of the power receiving terminal 7 that has constituted the surface illumination member 3 and L _4, the maximum electrode width of the power supply terminal 2 constituting the wall member 1 was set to L _3, It is preferable to satisfy the relationship of L ₄ > L ₃ . For example, even when the power receiving terminal 7 is arranged between the power supplying terminals 2, the power receiving terminal 7 and the pair of power supplying terminals 2 constituting the anode and the cathode simultaneously. It means that there is no contact.

《Surface lighting member》
Next, details of the organic EL element panel, the holding member, and the power receiving terminal (electrode) constituting the planar illumination member will be described.

[Organic EL element panel]
(Configuration of organic EL element panel)
The organic EL element constituting the organic EL element panel according to the present invention, in the non-emission state, the light transmittance T _C at a wavelength of 550nm is preferably 65% or more.

The light transmittance T _C in the present invention refers to a transmittance when the wavelength maximum was measured with light of 550 nm. Light transmittance T _C ordinary spectrophotometer (e.g., such as manufactured by Hitachi U-3300) can be readily determined using.

The light transmittance of the organic EL element according to the present invention in a non-light-emitting state refers to light at a wavelength of 550 nm of the substrate constituting the organic EL element, the pair of surface electrodes, the organic functional layer including the organic light emitting layer, and the entire sealing layer. In order to realize this, the light transmittance of each of these components must be high, and in particular, surface electrodes that are normally low in light transmittance should be designed with higher light transmittance. , namely an anode, a cathode, all of the intermediate electrode which is provided if necessary, light transmittance is high, becomes an important requirement for achieving a light transmittance T _C as defined in the present invention. In addition, when laminating an organic functional layer such as an organic light emitting layer, it is also preferable to devise so as to increase the light transmittance.

As the substrate and the sealing layer constituting the organic EL element panel, it is preferable to use a substrate having a high light transmittance such as glass, quartz, or a plastic film. By increasing the optical transparency of the components of the organic EL element panel, but the light transmittance T _C becomes possible to 65% or more, further, the range of light transmittance T _C of 70% to 90% It is preferable to design within.

  In addition, in the organic EL element panel according to the present invention, it is possible to adjust the color, for example, the simulated outside scenery color can be reproduced inside the cabin of an aircraft that is a moving body, etc. From the viewpoint of this, it is a preferred embodiment.

  According to the present invention, toning is possible, the emission color of the organic EL element panel can be emitted in any color according to desired information, and in addition to the three primary colors of light, various intermediate colors can be emitted. means. An organic EL element panel that realizes the above conditions is an organic EL element panel having a white light emitting property, and an organic EL device having a light emitting layer containing a blue light emitting compound, a green light emitting compound, and a red light emitting compound as a light emitting compound. An organic EL element panel having an EL element is preferable.

  Specific means for enabling the toning of the organic EL element are known and can be applied.

For example,
1) A method of adjusting the emission color of an organic EL element by controlling the emission conditions of the organic EL element having pixels of different emission colors arranged two-dimensionally in the plane direction,
2) A method of controlling the emission color by stacking two or more emission layers of different emission colors and moving the emission center by adjusting the drive of current and voltage.
3) A method of controlling the emission color by laminating two or more emission layers of different emission colors and adjusting an electrochromic element, a photochromic element and a thermochromic element in the middle of the emission layer,
4) A method of stacking a plurality of light emitting units each having a light emitting layer of two or more different light emitting colors, providing an intermediate electrode between the light emitting units, and driving each light emitting unit to control the light emitting color,
5) A method in which two or more organic EL elements having a high light transmittance are installed in an overlapping manner, and the emission color is controlled by adjusting the emission drive for each organic EL element,
An organic EL element capable of color matching can be obtained by combining these methods alone or in combination as appropriate.

  The main configuration of the organic EL element is configured to have a pair of surface electrodes (anode and cathode) on a substrate and an organic functional layer including an organic light emitting layer between the surface electrodes. Examples of the configuration of a typical organic functional layer include, from the anode side, a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, and an electron injection layer, depending on the characteristics of the constituent materials used. By making two layers into one composite layer, the number of layers may be reduced or a new functional layer may be added. For the configuration of the organic EL element, for example, the configuration described in “Organic EL Handbook” (supervision: Tetsuo Tsutsui; published by Realize Science and Technology Center) is referred to.

  FIG. 7 is a schematic cross-sectional view showing an example of the configuration of the organic EL element included in the organic EL element panel according to the present invention.

  In FIG. 7, the organic EL element 4 includes, for example, a transparent electrode 12 as an anode on a support substrate 11 made of a light-transmitting plastic film or glass, on which an organic functional layer unit C is provided. Is formed. The organic functional layer unit C includes, in addition to the organic light emitting layer 14, a plurality of organic functional layers 13, 15 such as a hole transport layer, a hole blocking layer, and an electron transport layer. On this organic functional layer unit C, for example, the transparent electrode 16 is provided as a cathode, and finally a sealing member (sealing layer) is provided as the outermost layer.

  In the conventional organic EL device, as the transparent electrode 12 configured as an anode, for example, an indium-tin composite oxide (hereinafter abbreviated as ITO) having a certain degree of light transmittance has been used. On the other hand, a metal vapor deposition film such as aluminum is used as the transparent electrode 16 which is a cathode. However, these cathode materials have poor light transmittance, and the organic EL element having such a structure has light transmittance. It was 60% or less, which was not preferable as a constituent member of an organic EL element applied to a design light emitting display device.

In the present invention, either one of the transparent electrode 12 or the transparent electrode 16 shown in FIG. 7, preferably both transparent electrodes, is a member having a very excellent light transmittance, more specifically, a thickness of 4.0 to 10 nm. by a thin film silver electrode which is within the range, the light transmittance T _C at a wavelength of 550nm is able to realize an organic EL device panel to be 65% or more, and enables the application to indoor lighting member Is.

  Note that the layer structure of the organic EL element panel 4 shown in FIG. 7 is merely an example of the configuration of a preferable organic EL element, and the present invention is not limited to these. For example, the configuration of the organic EL element panel 4 according to the present invention may have the following layer structures (i) to (v).

(I) Support substrate / anode / light emitting layer / electron transport layer / cathode / sealing adhesive / sealing member (ii) Support substrate / anode / hole transport layer / light emitting layer / electron transport layer / cathode / sealing Adhesive / sealing member (iii) support substrate / anode / hole transport layer / light emitting layer / hole blocking layer / electron transport layer / cathode / sealing adhesive / sealing member (iv) support substrate / anode / Hole transport layer / light emitting layer / hole blocking layer / electron transport layer / cathode buffer layer / cathode / sealing adhesive / sealing member (v) support substrate / anode / anode buffer layer / hole transport layer / Light emitting layer / hole blocking layer / electron transport layer / cathode buffer layer / cathode / sealing adhesive / sealing member [organic functional layer of organic EL element]
Next, each component of the organic EL element according to the present invention will be described.

(1) Injection layer In the organic EL device according to the present invention, an injection layer can be provided as necessary. The injection layer includes an electron injection layer and a hole injection layer, and may exist between the anode and the light emitting layer or the hole transport layer and between the cathode and the light emitting layer or the electron transport layer.

  The injection layer referred to in the present invention is a layer provided between the electrode and the organic functional layer in order to lower the driving voltage and improve the light emission luminance. “The organic EL element and its industrialization front line (November 30, 1998, NT. The details are described in Chapter 2, “Electrode Material” (pages 123 to 166) of the second edition of “S. Co., Ltd.”, and there are a hole injection layer and an electron injection layer.

  Details of the hole injection layer are described in, for example, JP-A-9-45479, JP-A-9-260062, and JP-A-8-288069. Examples of the hole injection material include triazole derivatives, oxadiazole derivatives, imidazole derivatives, pyrazoline derivatives and pyrazolone derivatives, phenylenediamine derivatives, arylamine derivatives, amino-substituted chalcone derivatives, oxazole derivatives, styrylanthracene derivatives, fluorenone derivatives, hydrazone derivatives, stilbene derivatives. Derivatives, polymers containing silazane derivatives and the like, aniline copolymers, polyarylalkane derivatives, or conductive polymers may be mentioned, preferably polythiophene derivatives, polyaniline derivatives, polypyrrole derivatives, more preferably Is a re-thiophene derivatives.

  In the organic EL device according to the present invention, the electron injection layer may or may not be provided. Details of the electron injection layer applicable in the present invention are described in, for example, JP-A-6-325871, 9-17574, 10-74586, and the like. Metal buffer layer typified by strontium or aluminum, alkali metal compound buffer layer typified by lithium fluoride, alkaline earth metal compound buffer layer typified by magnesium fluoride, oxide buffer layer typified by aluminum oxide Etc. In the present invention, the buffer layer (injection layer) is desirably a very thin film, and potassium fluoride and sodium fluoride are preferable. The film thickness is about 0.1 nm to 5 μm, preferably 0.1 to 100 nm, more preferably 0.5 to 10 nm, and most preferably 0.5 to 4 nm.

(2) Hole transport layer As the hole transport material constituting the hole transport layer according to the present invention, the same compounds as those applied in the hole injection layer can be used. It is preferable to use a compound, an aromatic tertiary amine compound and a styrylamine compound, particularly an aromatic tertiary amine compound.

  In the present invention, the hole transport layer can be formed by coating and drying using a wet coating method (for example, a spin coating method, a casting method, a printing method including an inkjet method, or the like). As another method for forming the hole transport layer, the hole transport material is formed by thinning it by a known method such as a vacuum vapor deposition method or a Langmuir-Blodgett method (LB method). be able to.

(3) Electron Transport Layer The electron transport layer according to the present invention is made of a material having a function of transporting electrons, and in a broad sense, an electron injection layer and a hole blocking layer are also included in the electron transport layer. The electron transport layer may be a single layer or a plurality of layers. For example, it can be used as a hole block layer / electron transport layer combination.

  When the electron transport layer is a single layer or a plurality of layers, it is injected from the cathode as an electron transport material (also serving as a hole blocking material) used for the electron transport layer adjacent to the light emitting layer on the cathode side. As long as it has a function of transmitting electrons to the light-emitting layer, any material can be selected and used from among conventionally known compounds. For example, fluorene derivatives, carbazole derivatives, azacarbazole Examples thereof include metal complexes such as derivatives, oxadiazole derivatives, triazole derivatives, silole derivatives, pyridine derivatives, pyrimidine derivatives, and 8-quinolinol derivatives.

(4) Light emitting layer The light emitting layer constituting the organic EL device according to the present invention is a layer that emits light by recombination of electrons and holes injected from the electrode or the electron transport layer and the hole transport layer. The portion to be formed may be in the light emitting layer or at the interface between the light emitting layer and the adjacent layer.

  The light emitting layer is mainly composed of a dopant compound and a host compound.

  Hereinafter, each of the host compound and the dopant compound will be described.

<4.1> Host Compound As the host compound contained in the light emitting layer of the organic EL device according to the present invention, a compound having a phosphorescence quantum yield of phosphorescence emission at room temperature (25 ° C.) of less than 0.1 is preferable. More preferably, the phosphorescence quantum yield is less than 0.01. Further, the non-light emitting organic material may contain a host compound.

  Different types of luminescent colors can be obtained by using a plurality of known host compounds and luminescent materials described later, and by mixing these, any luminescent color, for example, white luminescence can be expressed. it can.

  Specific examples of known host compounds include compounds described in the following documents. For example, Japanese Patent Application Laid-Open Nos. 2001-257076, 2002-308855, 2001-313179, 2002-319491, 2001-357777, 2002-334786, 2002-8860 Gazette, 2002-334787 gazette, 2002-15871 gazette, 2002-334788 gazette, 2002-43056 gazette, 2002-334789 gazette, 2002-75645 gazette, 2002-338579 gazette. No. 2002-105445, No. 2002-343568, No. 2002-141173, No. 2002-352957, No. 2002-203683, No. 2002-363227, No. 2002-231453. No. 2003-3165, No. 2002-234888, No. 2003-27048, No. 2002-255934, No. 2002-286061, No. 2002-280183, No. 2002-299060. 2002-302516, 2002-305083, 2002-305084, 2002-308837, and the like.

<4.2> Luminescent Material As the luminescent material (luminescent dopant) according to the present invention, a fluorescent compound, a phosphorescent luminescent material (also referred to as a phosphorescent compound, a phosphorescent compound, a phosphorescent dopant compound, etc.). However, a phosphorescent dopant compound is preferable.

  The phosphorescent light-emitting material can be appropriately selected from known materials used for the light-emitting layer of the organic EL element, but is preferably a complex compound containing a group 8-10 metal in the periodic table of elements. More preferred are iridium compounds, osmium compounds, platinum compounds (platinum complex compounds), and rare earth complexes, and most preferred are iridium compounds.

(5) Transparent electrode In the organic EL device according to the present invention, it is important to apply a surface electrode (transparent electrode) having a high light transmittance in order to set the light transmittance _TC to 65% or more. As the surface electrode having high light transmittance, what is generally known as a transparent electrode can be used. Examples include metal oxide electrodes such as indium-tin composite oxide (ITO) and indium zinc oxide (IZO), conductive polymer electrodes such as polythiophene and polyaniline, and metal thin film electrodes such as silver thin films and copper thin films. as the light transmittance T _C of one transparent electrode, preferably achieved by designing such that 80% or more.

  On the other hand, the transparent electrode is required to have high conductivity. Many conventional transparent electrodes have insufficient conductivity when formed thin in order to increase the light transmittance. In the present invention, it is preferable to use a thin-film silver electrode described below as a transparent electrode having high light transmittance and high conductivity.

  The transparent electrode according to the present invention preferably has a surface resistivity of 0.3 to 200 Ω / □, more preferably 0.5 to 100 Ω / □, and 1 to 50 Ω / □. A range of □ is particularly preferable. The surface specific resistance can be measured based on, for example, JIS K6911, ASTM D257, etc., and can be easily measured using a commercially available surface resistivity meter.

<Thin film silver electrode>
A thin film silver electrode is a layer comprised using silver or the alloy which has silver as a main component. As a method for forming such a thin film silver electrode layer, a method using a wet process such as a coating method, an ink jet method, a coating method, a dip method, a vapor deposition method (resistance heating, EB method, etc.), a sputtering method, a CVD method, etc. And a method using a dry process such as Of these, the vapor deposition method is preferably applied. If necessary, high-temperature annealing treatment may be performed after film formation.

  Alloys mainly composed of silver (Ag) constituting the thin film silver electrode layer are silver magnesium (Ag · Mg), silver copper (Ag · Cu), silver palladium (Ag · Pd), silver palladium copper (Ag · Pd). -Cu), silver indium (Ag.In), etc. are mentioned. These layers of silver or an alloy containing silver as a main component may be divided into a plurality of layers as necessary.

  Furthermore, since this thin film silver electrode layer has a film thickness in the range of 4 to 10 nm, it has a high light transmittance and can secure conductivity, so that it can be effectively applied to an organic EL device. In the present invention, the film thickness is particularly preferably in the range of 4 to 9 nm. If the film thickness is 10 nm or less, light absorption or reflection can be suppressed, and a desired transmittance as a transparent electrode can be obtained. Moreover, if the film thickness is 4 nm or more, sufficient conductivity can be obtained, and a continuous thin film can be stably formed. In the present invention, at least one of the surface electrodes of the organic EL element, that is, the anode, the cathode, and the intermediate electrode provided as necessary is preferably a thin film silver electrode, and all the electrodes are thin film silver electrodes. More preferred.

  In the thin film silver electrode layer, it is preferable to form silver or an alloy containing silver as a main component on the base layer having a compound containing a nitrogen atom by the above method. The silver atoms constituting the electrode layer interact with the compound containing nitrogen atoms constituting the underlayer, the diffusion distance of silver atoms on the underlayer surface is reduced, and aggregation of silver is suppressed. Therefore, in general, a silver thin film that is easily isolated in an island shape by film growth of a nuclear growth type (Volume-Weber: VW type) is a single-layer growth type (Frank-van der Merwe: FM type). As a result, a film is formed. Accordingly, an electrode layer having a uniform film thickness can be obtained even though the film thickness is small. As a result, it is possible to obtain a transparent electrode having a thinner film thickness and a high conductivity while maintaining high light transmittance.

(6) Support Substrate As a support substrate that can be used in the organic EL device according to the present invention, a transparent support substrate such as glass or a resin film can be used, but from the viewpoint of imparting flexibility, a resin is used. A film is preferred.

  Examples of the resin film include polyesters such as polyethylene terephthalate (PET) and polyethylene naphthalate (PEN), polyethylene, polypropylene, cellophane, cellulose diacetate, cellulose triacetate (TAC), cellulose acetate butyrate, cellulose acetate propionate ( CAP), cellulose esters such as cellulose acetate phthalate, cellulose nitrate or derivatives thereof, polyvinylidene chloride, polyvinyl alcohol, polyethylene vinyl alcohol, syndiotactic polystyrene, polycarbonate, norbornene resin, polymethylpentene, polyether ketone, polyimide , Polyethersulfone (PES), polyphenylene sulfide, polysulfones, Cycloolefins such as polyetherimide, polyetherketoneimide, polyamide, fluororesin, nylon, polymethylmethacrylate, acrylic or polyarylate, Arton (trade name, manufactured by JSR) or Appel (trade name, manufactured by Mitsui Chemicals) Examples thereof include resins.

[Holding member]
The holding member 5 constituting the lighting device of the present invention is preferably a holding member having flexibility. Further, the holding member is selected from a foamed resin material, a fibrous material, and a porous material. It is preferable that there is at least one. The holding member according to the present invention can hold the organic EL element to constitute a flexible planar illumination member, and can be arranged on the wall surface to effectively function as a soundproof material.

(Foamed resin material)
The foamed resin material referred to in the present invention is also referred to as foamed plastics, which is a material in which gas is finely dispersed in a synthetic resin and molded into a foamed (foamed) or porous shape, and is solid. It constitutes a non-uniform dispersion system of resin material and gas.

  The foamed resin material applicable to the holding member according to the present invention is not particularly limited, and examples thereof include flexible polyurethane foam, rigid polyurethane foam, polystyrene foam, polyethylene foam, polypropylene foam, EVA (ethylene-vinyl acetate copolymer). ) Cross-linked foam, PET (polyethylene terephthalate) resin foam, phenol foam, silicone foam, polyvinyl chloride foam, urea foam, acrylic foam, polyimide foam, EPDM (ethylene propylene diene rubber) foam, and the like.

  These foamed plastic production methods can be classified by the method of generating a gas phase (void), a chemical reaction gas utilization method for forming a gas phase using a chemical reaction, a gas phase using a solvent having a low boiling point. A low boiling point solvent utilization method for forming the solvent, and a solvent removal method for forming voids in the process of removing the contained solvent.

  In addition, the production method classification according to the state of the polymer includes casting foam molding method in which solidification of liquid raw materials such as monomers and oligomers and bubble generation proceed simultaneously, melt foam molding method in which bubbles are generated in a heat-melted synthetic resin, or Examples thereof include a solid-phase foam molding method in which a synthetic resin is foamed in a state close to a solid phase slightly heated with a solid phase or water vapor.

  In addition, the foam structure is classified into an open-cell structure having so-called open cells in which bubbles in the foam are mutually continuous, and a closed-cell structure in which the bubbles are discontinuously formed independently. From the viewpoint of excellent flexibility, flexibility, and sound absorption, an open cell structure is preferable.

(Fiber material)
The fiber material applicable as the holding member according to the present invention is not particularly limited. For example, rock wool, glass wool, steel fiber, carbon fiber, various organic fibers (olefin fiber, polyvinyl alcohol fiber, cellulose fiber, synthetic fiber) Fiber etc.) and the like formed into a board shape with an adhesive, and felt processed material.

(Porous material)
Examples of the porous material applicable as the holding member according to the present invention include the above-described foamed resin material and fibrous material. In addition, low density polyethylene, high density polyethylene, ultrahigh molecular weight polyethylene, polypropylene, Examples include continuous porous bodies obtained by heating and sintering plastic powders having a uniform particle size (for example, in the range of 10 to 200 μm) such as polymethyl methacrylate, polystyrene, ethylene-vinyl acetate copolymer, and fluororesin. be able to.

[Power receiving terminal]
As a power receiving terminal (receiving electrode) of the planar illumination member, a general electrode material can be appropriately selected and applied. For example, aluminum-dispersed copper, chromium copper, copper tungsten, silver tungsten, molybdenum, beryllium , Silver nickel, silver graphite and the like.

  According to the present invention, it is light and thin, and it is easy to attach and detach the light emitter. It is excellent in earthquake resistance, flame retardancy, ease of maintenance (easy to replace), and also has a soundproof function and is long and flat. This lighting device can be used as lighting using indoor wall surfaces, or lighting devices for inner walls of moving objects such as aircraft, trains, buses, automobiles, and ships.

DESCRIPTION OF SYMBOLS 1 Wall member 2 Power supply terminal 3, 3A-3D Planar illumination member 4 Organic electroluminescent element panel (organic EL element panel)
DESCRIPTION OF SYMBOLS 5 Holding member 6 Wiring 7 Electric power receiving terminal 7A Electric power receiving terminal or anode 7B Electric power receiving terminal or cathode 8A, 9A Hanging pin receiving part 8B, 9B Hanging pin 11 Support substrate 12 Transparent electrode (anode)
13, 15 Organic functional layer 14 Organic light emitting layer 16 Transparent electrode (cathode)
17 Sealing member C Organic functional layer unit G Groove

Claims (9)

  A lighting device comprising a wall member having a groove portion to be installed on a wall surface and a flexible planar illumination member having a structure to be hooked on the groove portion of the wall member, wherein the wall member is disposed on the groove portion. A plurality of power supply terminals, and the planar illumination member has a power receiving terminal at a position where it can receive power from the power supply terminal when the planar illumination member is hooked in the groove of the wall member. A lighting device comprising:   The lighting device according to claim 1, wherein the planar illumination member is an organic electroluminescence element panel including an organic electroluminescence element as a light emitter as a light emitter.   The said planar illumination member is comprised from the said terminal for electric power reception, a flexible organic electroluminescent element panel, and a flexible holding member, The Claim 1 or Claim 2 characterized by the above-mentioned. Lighting device.   The lighting device according to claim 3, wherein the material constituting the flexible holding member is at least one selected from a foamed resin material, a fibrous material, and a porous material. The distance between the plurality of power supply terminals for the wall member has a L _1, when the maximum width of the power receiving terminal included in the surface illumination member was L _2, satisfying the relationship L _1> L ₂ The illumination device according to any one of claims 1 to 4, wherein The distance between the plurality of power receiving terminals having said surface illumination member and L _4, when the maximum width of the power supply terminal to which the wall member has been with L _3, satisfy the relationship of L _4> L ₃ The lighting device according to any one of claims 1 to 5, wherein   The lighting device according to any one of claims 2 to 6, wherein the organic electroluminescence element panel has a light transmittance T of 65% or more in a non-light-emitting state at a wavelength of 550 nm.   The lighting device according to any one of claims 2 to 7, wherein the organic electroluminescence element panel can be toned.   The said wall surface is an inner wall surface which comprises a moving body, The light emission surface of the said planar illumination member is curvedly curvedly arrange | positioned by the indoor side of the said moving body, The Claim 1 characterized by the above-mentioned. The lighting device according to any one of up to 8.

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