EP2473002A2 - Dispositif d'illumination - Google Patents
Dispositif d'illumination Download PDFInfo
- Publication number
- EP2473002A2 EP2473002A2 EP11194625A EP11194625A EP2473002A2 EP 2473002 A2 EP2473002 A2 EP 2473002A2 EP 11194625 A EP11194625 A EP 11194625A EP 11194625 A EP11194625 A EP 11194625A EP 2473002 A2 EP2473002 A2 EP 2473002A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- panels
- transparent
- illumination device
- light
- panel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
- F21S8/02—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
- F21S8/026—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S6/00—Lighting devices intended to be free-standing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S6/00—Lighting devices intended to be free-standing
- F21S6/005—Lighting devices intended to be free-standing with a lamp housing maintained at a distance from the floor or ground via a support, e.g. standing lamp for ambient lighting
- F21S6/008—Lighting devices intended to be free-standing with a lamp housing maintained at a distance from the floor or ground via a support, e.g. standing lamp for ambient lighting with a combination of direct and indirect lighting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
- F21S8/02—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
- F21S8/022—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters intended to be recessed in a floor or like ground surface, e.g. pavement or false floor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
- F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
- F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
- F21S8/06—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures by suspension
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
- F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
- F21S8/06—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures by suspension
- F21S8/061—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures by suspension with a non-rigid pendant, i.e. a cable, wire or chain
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
- F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
- F21S8/06—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures by suspension
- F21S8/063—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures by suspension with a rigid pendant, i.e. a pipe or rod
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
- F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
- F21S8/06—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures by suspension
- F21S8/065—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures by suspension multi-branched, e.g. a chandelier
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
- F21V21/14—Adjustable mountings
- F21V21/30—Pivoted housings or frames
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
- F21V33/0004—Personal or domestic articles
- F21V33/0012—Furniture
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B33/00—Electroluminescent light sources
- H05B33/12—Light sources with substantially two-dimensional radiating surfaces
- H05B33/14—Light sources with substantially two-dimensional radiating surfaces characterised by the chemical or physical composition or the arrangement of the electroluminescent material, or by the simultaneous addition of the electroluminescent material in or onto the light source
- H05B33/145—Arrangements of the electroluminescent material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
- F21V14/02—Controlling the distribution of the light emitted by adjustment of elements by movement of light sources
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V19/00—Fastening of light sources or lamp holders
- F21V19/02—Fastening of light sources or lamp holders with provision for adjustment, e.g. for focusing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2105/00—Planar light sources
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2113/00—Combination of light sources
- F21Y2113/10—Combination of light sources of different colours
- F21Y2113/13—Combination of light sources of different colours comprising an assembly of point-like light sources
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/20—Electroluminescent [EL] light sources
Definitions
- the present invention relates to an illumination device using an EL element.
- An electroluminescence (EL) element is constituted by forming on a transparence substrate a light-emitting part sandwiching a light-emission layer by an anode and a cathode, and when a voltage is applied between the electrodes, emits light due to an exciton generated by recombination of a hole with an electron implanted as a carrier into the light-emission layer.
- the EL element is roughly classified into: an organic EL element using an organic material for a fluorescent material of the light-emission layer and an inorganic EL element using an inorganic material.
- the organic EL element has characteristics that are a high-intensity light can be emitted at a low voltage, various emission colors of the light can be obtained depending on types of the fluorescent materials, and additionally manufacturing as a planar light emitter can be easily realized.
- an illumination device formed by jointing a sub panel rotatably to each side of a rectangular organic EL panel is known, the sub panel being formed in the same shape as that of the organic EL panel (for example, refer to Patent Document 1).
- the illumination device is able to be deformed to a desired shape such as a flat type and a box type by rotating the sub panel.
- an illumination device formed by jointing tile-type flat panels each other with a hinge-type connector is known (for example, refer to Patent Document 2). According to the illumination device, a range in which the light is irradiated can be adequately adjusted by changing a joint form of the plurality of panels and by adequately lighting them.
- the present invention is to solve the above-mentioned problem, and intends to provide an illumination device where the emission intensity of light can be adequately switched depending on the usage of the illumination device by a user.
- the present invention includes: a plurality of transparent EL panels each including: a transparent EL element configured by stacking on a transparent substrate in turn an anode formed of a transparent conducting film; a light emission layer; and a cathode formed of the transparent conducting film; and a fixture body for retaining the transparent EL panels so that light emission regions of the plurality of transparent EL panels can overlap each other, and irradiating light of superposed emission lights of the plurality of transparent EL panels.
- the plurality of transparent EL panels are configured so as to be freely detachable with each other, and when overlapped, irradiates light of superposed emission lights of the transparent EL panels.
- the transparent EL panel is provided with: an anode terminal and a cathode terminal on one surface; and terminal reception parts corresponding respectively to the anode terminal and the cathode terminal on the other surface.
- the fixture body includes a chassis for the plurality of transparent EL panels.
- a pressing member is fitted into a groove part provided on an internal surface of the chassis, and the pressing member retains the transparent EL panels at the groove part.
- the fixture body has a light reflectivity at a portion opposed to the transparent EL panels.
- an EL panel including a light reflective layer it is preferred to further include: an EL panel including a light reflective layer, and preferred that the EL panel having the light reflective layer is arranged at the outermost portion of the plurality of overlapped transparent EL panels.
- the plurality of transparent EL panels are jointed to be freely foldable, and when overlapped, irradiate light of superposed emission lights of the transparent EL panels.
- the plurality of transparent EL panels are retained rotatably with respect o the fixture body, and when overlapped, irradiate light of superposed emission lights of the transparent EL panels.
- the plurality of transparent EL panels are configured so as to freely slide with each other, and when overlapped, irradiate light of superposed emission lights of the transparent EL panels.
- the fixture body includes a plurality of slide grooves provided in parallel to a direction perpendicular to a slide direction of the transparent EL panels.
- the transparent EL panel is arranged in a window portion of a slide door.
- a sliding door is composed of the transparent EL panel.
- a control part for individually controlling the plurality of transparent EL panels to be lighted.
- the plurality of transparent EL panels emit different colors, respectively.
- emission colors of lights of the plurality of transparent EL panels include RGB three primary colors.
- the plurality of transparent EL panels have a different area of the light emission surface from each other.
- an emission intensity of light can be adequately switched by changing the number of overlapping transparence EL panels.
- an illumination device 1 according to a first embodiment of the present embodiment will be explained.
- an illumination device 1 according to the present invention is explained on the basis of a configuration to be used as an embedded-type downlight that is embedded in a ceiling C.
- a downward direction in the drawings is a leading direction of light.
- the illumination device 1 includes: a plurality of transparence EL panels 2; and a fixture body 3 for retaining the EL panels 2 so that light emission regions of the plurality of EL panels 2 can be overlapped each other.
- Each of the EL panels 2 has the same shape, and is configured so as to be freely detachable with each other.
- the EL panels 2 are configured as one module by installing a transparence EL element 20 formed in a disk shape into a ring-shaped panel frame 21. As described later, since the EL element 20 is transparence, the EL panel 2 becomes luminous itself to emit light in a state where the plurality of panels are overlapped, and transmits the light emitted from the other EL panels 2. Accordingly, in a case where the illumination device 1 is used as a downlight, the overlapped-lower EL panels 2 irradiate light where light of the overlapped-upper EL panels 2 are superposed.
- the panel frame 21 is provided with: an anode terminal 22a and a cathode terminal 22b on one surface; and terminal reception parts 23a and 23b corresponding respectively to the anode terminal 22a and the cathode terminal 22b on the other surface.
- Each of the terminals 22a and 22b are formed in a convex shape
- the terminal reception parts 23a and 23b are formed in a convex shape
- the EL panels 2 are electrically connected with each other by fitting each of the terminals 22a and 23b into the terminal reception parts 23a and 23b.
- each of the anode terminal 22a and the cathode terminal 22b is formed in a different shape: the anode terminal 22a is configured so as not to be fitted into the terminal reception part 23b for the negative terminal, and the cathode terminal 22b is configured so as not to be fitted into the terminal reception part 23a for the positive terminal.
- the anode terminal 22a is formed in a cylindrical shape
- the cathode terminal 22b is formed in a slightly-elongated tablet shape
- each of the terminal reception parts 23a and 23b is formed in a corresponding shape to the terminals. In this manner, when overlapping the plurality of EL panels 2, it can be prevented that a user incorrectly connects the respective terminals.
- the panel frame 21 is provided with through holes 24 so as to avoid a position of the light emission part (details will be described later) of the EL element 20, and the EL panel 2 is retained to the fixture body 3 by screws 31 inserted into the through holes 24.
- the fixture body 3 includes: a cylindrically-shaped chassis 32 for housing the plurality of transparence EL panels; a base part 33 to which the EL panels 2 contact, the base part dividing an inside of the chassis 32 into two housing spaces; and a flange part 34 contacting to the ceiling C.
- the plurality of EL panels 2 are accommodated in the one space of the inside of the chassis 32 divided by the base part 33, and the other space accommodates a power source unit 4 incorporating a lighting circuit, a microcomputer for control (a control part), and the like for controlling the EL panel 2 to be lighted.
- the base part 33 is tightly fixed to an inner circumference surface of the chassis 32 by bonding or welding.
- the power source unit 4 is connected to a commercial power source (not shown in the drawing) by a conducting wire 41.
- the fixture body 3 is provided with a fixture fixing part (not shown in the drawing) on an outer surface side of the chassis 32, and the fixture body 3 is fixed to the ceiling C by sandwiching a plate member configuring the ceiling C with the fixture fixing member and the flange part 34.
- the outer surface of the chassis 32 may be provided with a plurality of radiator fins (not shown in the drawings) for improving the radiation performance.
- the base part 33 is provided with body terminal reception parts 33a and 33b having the same shape as those of the terminal reception parts 23a and 23b of the EL panel 2, and the body terminal reception parts 33a and 33b are connected to the power source unit 4 by a circuit wiring (not shown in the drawings) included in the base part 33.
- the anode terminal 22a and the cathode terminal 22b are of the EL panel 2 are fitted into the body terminal reception parts 33a and 33b, respectively, and thereby the power source unit 4 is electrically connected to the EL panel 2.
- the base part 33 is provided with a screw fixation hole 33c into which the screw 31 is inserted.
- the screw 31 in the configuration to fix the EL panel 2 to the fixture body 3 with use of the screw 31, when the number of the EL panels 2 to be used is small, the screw 31 sometimes substantially projects toward an upper direction of the base part 33. For this reason, it is desired that the power source unit 4, the conducting wire 41, and the like are arranged on an upper surface side of the base part 33 so as to avoid a position where the screw fixation hole 33c is formed.
- the EL element 20 forms a light emission part 26 on a substrate 25 having the transparency, and has a configuration where the outer side is covered with a sealing member 27.
- the light emission part 26 is formed by laminating in turn: an anode 26a formed of a transparent conducting film, a light emission layer 26b having a light emission function, and a cathode 26c formed of a transparent conducting film on the substrate 25.
- the transparent conducting film forming the anode 26a and the cathode 26 includes a transparent conducting material such as ITO (Indium Tin Oxide), SnO 2 (Tin Oxide), ZnO (Zinc oxide), and the like.
- the sealing member 27 is composed of a transparent material, is covered so that a part of each electrode can be exposed, and these exposed portions of the electrodes are electrically connected to the anode terminal 22a or to the cathode terminal 22b directly or via the lead wire and the like.
- the substrate 25 includes transparent glass such as soda-lime glass and alkali-free glass or of a transparent resin material and the like, and is formed in a disk shape.
- the anode 26a is an electrode to implant a hole into the light emission layer 26b, an electrode material made of metal, alloy, and conductive compound each having a large work functions or of a mixture of them is used, and preferably the material whose work function is 4eV or more. Specifically, the transparent conductive material such as ITO, Sn02 (Tin oxide), and ZnO (Zinc oxide) is preferred.
- the anode 26a is formed by performing the film formation and the patterning of these electrode materials on a surface of the substrate 25 due to, for example, the vacuum deposition method, the spattering method, and the like.
- the light emission layer 26b uses an organic fluorescent material able to emit a desired white light, and, for example, uses: anthracene, naphthalene, pyrene, tetracene, coronene, perylene, futaloperylene, naphthaloperylene, diphenylbutadiene, tetraphenylbutadiene, coumalin, oxadiazole, bisbenzoxazoline, bisstyryl, cyclopentadiene, quinoline metal complex, tris (8-hydroxyquinolinate) alminum complex, tris (4-methyl-8-quinolinate) alminum complex, tris (5-phenyl-8-quinolinate) alminum complex, aminoquinoline metal complex, benzoquinoline metal complex, tri-(p-terphenyl-4-yl)amine, 1-aryl-2,5-di(2-thieny)pyrrol derivative, pyran, quinacridone, rubrene, distillbenzene derivative, distillally
- the light emission layer 26b is formed by performing the film formation and the patterning of the above-mentioned compounds on a surface of the anode 26a, for example, due to the vacuum deposition method. Meanwhile, the light emission layer 26b may be a layer where the plurality of different materials are stacked, and may intermediately laminate a buffer layer for adjusting an electric potential between these plurality of layers.
- the cathode 26c is an electrode for implanting electrons to the light emission layer 26b, and is formed of the transparence conductive material, ITO, SnO 2 , ZnO, and the like as is the case with the anode 26a.
- the anode 26c is also formed in the same manner as that of the cathode 26a.
- a hole implantation-transfer layer (not shown in the drawings) for promoting an efficiency of the hole implantation from the anode 26a to the light emission layer 26b may be provided between the anode 26a and the light emission layer 26b.
- an electron implantation-transfer layer (not shown in the drawings) for promoting an efficiency of the electron implantation from the cathode 26c to the light emission layer 26b may be provided between the light emission layer 26b and the cathode 26c.
- a predetermined electric power is supplied to the anode 26a and the cathode 26c via the respective terminals 22a and 22b of the panel flame 21 (refer to Fig. 1 and Fig. 2 ), and thereby the light emission layer 26b emits light.
- the emitted light transmits the anode 26a and the cathode 26c and is derived outside the EL element 20.
- a diffusion layer (not shown in the drawing) and the like for improving a derivation efficiency of light from the substrate 25 may be provided for some extents not to deteriorate the transparency.
- the number of EL panels 2 to be overlapped can be easily changed. And, in the case of increasing an emission brightness of the illumination device 1, the number of EL panels 2 to be overlapped is increased, and in the case of reducing the emission brightness, the number of EL panels 2 to be overlapped is reduced. In this manner, on the basis of usage of the illumination device 1, a user can arbitrarily switch the emission brightness of the illumination device 1.
- each of the EL panels 2 is modularized in the same shape, a manufacturer can reduce the number of model numbers, and can improve a manufacturing efficiency. Further, since there is no need to search a product of the model number suitable for the fixture body, the user can purchase the product without any efforts.
- a portion opposed to the EL panel 2 is configured so as to have the reflectivity by: being painted by a white paint, and forming a reflective film and the like, for example. In this manner, since light emitted from the EL panel 2 toward the base part 33 is reflected on a surface of the base part 33 to travels to the derivation direction of the light, a use efficiency of the light can be improved.
- a reflective EL panel (not shown in the drawings) that is formed in the same shape as that of the EL panel 2 and that is configured so as to have a light reflectivity by using a light reflective material such as aluminum for the cathode 26c may be separately arranged at an outermost part of the plurality of overlapped EL panels 2.
- a light reflective EL panel is arranged at a position abutting to the base part 33. In this manner, as is the same with the above-mentioned case, the light emitted toward the base part 33 is reflected to travel to the derivation direction of the light, and accordingly the use efficiency of light can be improved.
- the emission brightness can be arbitrarily switched without detaching the EL panels 2 by changing the number of the EL panels 2 to be lighted.
- the lower EL panels 2 are lighted. That is, in transmitting through the lower EL panel 2, the light emitted from the upper EL panel 2 is slightly lost due to the total reflection and the like. Accordingly, when the EL panels 2 are preferentially lighted from the lower EL panel 2, the loss of the light caused by the transmission of the other EL panel 2 can be suppressed, and thus a light use (light derivation) efficiency can be improved.
- each of the plurality of EL panels 2 may be configured so that the emission color can be different from each other.
- the emission color of the plurality of EL panels 2 is, for example, configured so as to include three primary colors.
- the full color illumination including a white light can be realized by adjusting each output of the EL panels 2, and for example, an illumination rendering to change a color rendering property of the irradiated light on the basis of a situation of a space where the illumination device 1 is used can be performed.
- Fig. 4 (a) and (b) show a configuration where a retention flame for retaining the EL panel 2 in the chassis 32.
- the configuration shown in Fig. 4 includes a ring-shaped retention flame 51 formed in the same shape as that of the flange part 34 of the fixture body 3. Screw holes 34a and 51a are formed in both of the flange part 34 and the retention flame 51, and when the screws 31 are inserted into the screw holes 34a and 51a, the flange part 34 and the retention flame 51 are jointed.
- a ring-shape clearance adjustment member 52 having elasticity and formed in the substantially-same shape as that of the panel flame 21 of the EL panel 2 is arranged in the chassis 32. That is, the EL panel 2 is pressed by the clearance adjustment member 52 having elasticity in a space sandwiched between the base part 33 and the retention flame 51 and thereby is retained in the fixture body 3.
- the configuration shown in Fig. 4(b) includes the retention flame 53 having: a cylindrical part 53a having a slightly-larger internal diameter than an external diameter of the EL panel 2; and a rim part 53b forming an opening, the opening having substantially the same shape as that of the EL element 20.
- a screw groove is formed on the inner circumference surface of the chassis 32, and a screw groove is also formed on an outer circumference surface of the cylindrical part 53a.
- the clearance adjustment member 52 may be arbitrarily arranged. Additionally, instead of the retention flame 53, a ring-shape spring (not shown in the drawings) having a slightly-larger circumference than the circumference of the screw groove may be fitted to the screw groove formed on the inner circumference surface of the chassis 32, and thus the EL panel 2 may be retained by the ring-shape spring.
- a ring-shape spring (not shown in the drawings) having a slightly-larger circumference than the circumference of the screw groove may be fitted to the screw groove formed on the inner circumference surface of the chassis 32, and thus the EL panel 2 may be retained by the ring-shape spring.
- Fig. 5 shows a configuration that: a plurality of groove parts 35 are formed to be the same width as a thickness of the EL panel 2 on the inner circumferential surface of the chassis 32; a part of a spring chip 54 is fitted as a pressing member into the groove part 35; and the EL panel 2 is retained by the spring chip 54.
- the spring chip 54 is formed so that a portion projecting from the groove part 35 can be biased to the base part 33 side in the state of being fitted into the groove part 35. And, the biased spring chip 54 supports a lower surface side of the panel flame 21 of the EL panel 2, and thereby the EL panel 2 is retained in the chassis 32 at a position where the spring chip 54 is fitted.
- a spring reception part (not shown in the drawings) is formed in the panel flame 21.
- the above-mentioned configuration shows that the EL panel 2 is in the disk shape and that the chassis 32 is in the cylindrical shape; however, as shown in Fig. 6 , the EL panel 2 may be in a rectangular shape and the chassis 32 may be in a box shape.
- the configurations shown in the above-mentioned Fig. 4(a) and Fig. 5 can be employed as the structure to retain each of the EL panels 2.
- the illumination device 1 can be used not only as the above-mentioned ceiling embedded-type downlight but also as, as shown in Fig. 7 , an embedded-type illumination fixture embedded into a floor surface F, for example.
- each of the EL panels 2 is positioned by: each of the terminals 22a and 22b, and each of the terminal reception parts 23a, 23b, 33a, 33b, and is retained due to its own weight by the fixture body 3, and accordingly other retention structures are not required.
- the flange part 34 is embedded in the floor F, and thus the embedded-type illumination device 1 is installed so as not to project upward over the floor F.
- a protection cover 36 to protect the EL panel 2 is attached to the flange part 34.
- Figs. 8(a) and 8(b) show a configuration where the illumination device 1 is used as a ceiling light.
- the fixture body 3 is directly fixed to the ceiling C by the screws 31.
- the terminal reception parts 23a, 23b, 32a, and 32b formed in a combined shape of a circular hole and an elongate hole, called a daruma hole shape are formed on lower surfaces of: the panel flame 21 of the EL panel 2; and the fixation body 3.
- each of the terminals 22a and 22b formed in a screw head shape is formed on lower surfaces of: the panel flame 21 of the EL panel 2; and the fixation body 3.
- the EL panel 2 to be attached is slightly rotated.
- each of the terminals 22a and 22b formed in the screw head shape are fitted to the elongate hole portions of the terminal reception parts 23a, 23b, 32a, and 32b, and thus the fixture body 3 and the EL panel 2 are fixed, or the EL panels 2 are fixed each other.
- the EL panel 2 can be fixed to the fixture body 3 without using other retention members, and thus the lower EL panel 2 can be directly attached to the upper EL panel 2. Meanwhile, it is desired that, of the EL panels 2 to be overlapped, the EL panel 2a having no terminal reception parts 23a and 23b is attached as a lowest panel.
- the rectangular EL panel 2 can be used.
- a configuration where: a hook member 55 is provided on a side portion of the fixture body 3 and then the EL panel 2 is retained by the hook member 55 may be employed.
- a configuration where: a corner flame 56 is engaged to the hook member 55 and then the EL panel 2 is retained by sandwiching the EL panel 2 with the corner flame 56 and the fixture body 3 may be employed.
- Fig. 10 shows a configuration where the fixture body 3 is fixed to the ceiling C via a bottom surface of an enclosure flame 57 and then the EL panels 2 are retained in the enclosure flame 57.
- any one of the above-described configurations is employed.
- the circular EL panel 2 and the rectangular EL panel 2 both may be employed.
- the plurality of EL panels 2 may have a different area of the light emission surface from each other.
- the EL panel 2 having a large area of the light emission surface is attached as the upper panel and then the EL panels 2 having a smaller area of the light emission surface are attached so that the areas can be gradually small toward the lower panel.
- an electric connection between the fixture body 3 and each of the EL panels 2 is realized by a lead wire and the like, for example.
- Figs. 13(a) and 13(b) show a configuration where the illumination device 1 is used as a spotlight.
- the fixture body 3 is fixed to the ceiling C via a support axis 58, a hinge part 61 is provided between the fixture body 3 and the support axis 58, and thus the fixture body 3 can freely oscillate.
- the EL panel 2 to be overlapped may be the circular plate shown in Fig. 13(a) and may be the rectangular plate shown in Fig. 13(b) .
- each of the EL panels 2 may be incorporated in the chassis 32 of the fixture body 3 and may be stacked toward the outside of the chassis 32.
- the plurality of EL panels 2 are jointed to be freely foldable and when the panels are overlapped, irradiates light of superposed emission lights of the respective EL panels 2.
- Figs. 14(a) to 14(f) show a configuration where the illumination device 1 is used as the ceiling light attached to the ceiling C.
- a pair of support members 63 is jointed to a pedestal part 37 (the fixture body 3) fixed to the ceiling C via a cylindrical axis reception part 62, and the EL panels 2 are fixed to each of the support members 63, respectively.
- the axis reception part 62 incorporates a bending axis (not shown in the drawings), and is able to freely bend the pair of support members 63 and the EL panels 2 within a range from 0° to 180°.
- a panel insertion groove 64 is formed on a joint portion with the axis reception part 62 and on an opposite side surface.
- a power source unit (not shown in the drawings) is incorporated, and in electrically connected to a terminal reception part (not shown in the drawings) formed inside the panel insertion groove of the support member 63 by the lead wire and the like.
- an electrode terminal (not shown in the drawings) is provided on a side portion of the EL panel 2, and when the EL panel 2 is inserted to the panel insertion groove 64, the EL panel 2 is fixed to the support member 63 and is electrically connected to the power source unit.
- the configuration can be also employed as a suspended ceiling light that is suspended by the support axis 58. In this case, instead of the pedestal part 37, the illumination device 1 is fixed to the ceiling C via the support axis 58.
- Figs. 14(a), 14(b) , and 15(a) in the present embodiment, when the respective EL panels 2 are horizontally arranged, low-brightness light can be irradiated in a wide range. In addition, since the EL panel 2 emits light from both surfaces, the EL panel 2 can irradiates light to both directions of the ceiling C and the floor. Moreover, as shown in Figs. 14(a), 14(b) , and 15(a) , when the respective EL panels 2 are vertically arranged, high-brightness light can be irradiated in a narrow range. Furthermore, as shown in Figs. 14(e) and 14(f) , the bending angles of the respective EL panels 2 are arbitrarily determined, and when the bending angle is changed, a user can arbitrarily change the irradiation range and the brightness of light.
- Figs. 16 to 18 show configurations where the illumination device 1 is used as a stand light (a desk lamp).
- Figs. 16(a) and 16(b) show a configuration where a support arm 59 bent in an L-shape is erected rotatably with respect to the fixture body 3 and then a pair of EL panels 2 is attached to an upper side of the support arm 59 via the hinge part 61.
- Figs. 17(a) and 17(b) show a configuration where one side of the rectangular EL panel 2 is attached to the fixture body 3 so that the angle can be freely changed and then another side is jointed to the other EL panel 2 via the hinge part 61. Meanwhile, as shown Figs.
- each of the EL panels 2 to be jointed may be in a different shape from each other.
- Fig. 16(a), 17(a) , and 18(a) when the bending angle of the respective EL panels 2 is set to 180°, low-brightness light can be irradiated in a wide range.
- Figs. 16 (a), 17(a) , and 18(a) when the respective EL panels 2 are overlapped, high-brightness light can be irradiated in a narrow range.
- white arrows in Figs. 16(a) and 16(b) shows a brightness change of an irradiated light from the EL panel 2 as images.
- Figs. 19 to 23 show configurations where the illumination device 1 has two or more bending parts.
- Figs. 19 and 20 are the same as those of the ceiling light shown in Figs. 14 and 15 , and show configurations where two pieces of the EL panels 2 are attached to the fixture body 3 via the hinges 61, respectively.
- Figs. 19(a) and 19(b) show a configuration where the fixture body 3 is fixed to the ceiling 3
- Figs. 20(a) and 20(b) show a configuration of a suspending manner using support axes 58. In the configuration shown in Figs.
- each of the EL panels 2 can be turned in a wider range.
- Figs. 21(a) and 21(b) show a configuration where: the support axis 58 is erected on the pedestal part 37 (the fixture body 3) mounted on the floor surface F, an upper bottom part 65 is arranged on an upper end of the support axis 58, and the pair of EL panels 2 is attached to the upper bottom part 65 via the hinge parts 61, respectively.
- the configuration as shown in Fig. 21(a) , in a state where the EL panels 2 are spread, the configuration can function as a table doubling as an illumination.
- the configuration in a state where the EL panels 2 are folded, the configuration can function as a messaging board.
- Figs. 22(a) to 22(c) show a configuration where the illumination device 1 is used as a floor stand light (a floor light).
- the long support axis 58 is erected on the pedestal part 37 (the fixture body 3) on the floor surface F
- the EL panels 2 is horizontally arranged on an upper end of the support axis 58
- the EL panels 2 are provided on sides opposed to the EL panels 2 via connection parts 66a and 66b.
- Each of the connection parts 66a and 66b incorporate a hinge, and joint the respective EL panels 2 to be freely foldable.
- one connection part 66b is formed to be longer by a thickness of the EL panel 2 than the other connection part 66a, as shown in Fig. 22(b) , the EL panel 2 jointed by the connection part 66b can be smoothly folded after folding the EL panel 2 jointed by the connection part 66a.
- Figs. 23(a) and 23(b) show a configuration where the plurality of EL panels 2 are jointed via the plurality of hinge parts 61.
- Each of the EL panels 2 may be in the same shape as that shown in Fig. 23 (a) , and may be in a different shape from each other as shown in Fig. 23(b) .
- the illumination device 1 when the bending angle of the hinge part 61 is changed, a user can arbitrarily change the irradiation range and the brightness of light.
- the device when bended as shown in an example of the drawings, the device can be used as a "lighting folding screen".
- the plurality of EL panels 2 are retained to be freely turned with respect to the fixture body 3, and when overlapped, irradiate light of superposed emission lights of the respective EL panels 2.
- Figs. 24(a) and 24(b) show a configuration where the illumination device 1 is used as the stand light.
- the two support arms 59 bent in an L-shape are rotatably erected respectively with respect to the fixture body 3 and then each of the EL panels 2 is attached to an end of bending portion of the support arm 59.
- Fig. 24 (b) shows a configuration where the illumination device 1 is used as the stand light.
- the two support arms 59 bent in an L-shape are rotatably erected respectively with respect to the fixture body 3 and then each of the EL panels 2 is attached to an end of bending portion of the support arm 59.
- the illumination device 1 is used as a chandelier type illumination.
- the illumination device 1 is used as a chandelier type illumination.
- an example where three pieces of the EL panels 2 are attached is shown; however, four or more pieces of the EL panels 2 may be attached.
- the configuration when the EL panels 2 are turned with respect to the fixture body 3, the user can arbitrarily change the irradiation range and the brightness of light as is the same with the above-mentioned embodiment.
- an illumination device according to a fourth embodiment of the present invention will be explained.
- the illumination device 1 when the plurality of EL panels 2 are configured so as to freely slide with each other and overlapped, the illumination device 1 irradiates light of superposed emission lights of the respective EL panels 2.
- Figs. 26 (a) and 26 (b) show a configuration where the illumination device 1 is used as the stand light.
- the EL panels 2 are attached to the fixture body 3 so that the angle of the EL panel 2 can be variable via the hinge part 61, and a pair of slide rails 38 is provided to both side parts of the EL panel 2. And, another EL panel 2 is retained so as to freely slide due to the slide rails 38.
- the configuration as shown in Fig. 26 (a) , when the freely-slidable EL panel 2 is slid toward ends of the slide rails, low-brightness light can be irradiated in a wide range.
- Fig. 26 (b) when the respective EL panels 2 are overlapped, high-brightness light can be irradiated in a narrow range.
- Figs. 27 (a) and 27 (b) show a configuration where the illumination device 1 is used as a suspended ceiling light.
- the illumination device 1 includes a plurality of slide grooves 39 provided in parallel to a direction perpendicular to a slide direction of the EL panel 2 on an internal side surface of the fixture body 3. Since the respective EL panels 2 are retained by the fixture body 3 at differential heights by the thickness of the EL panel 2, as shown in Fig. 27 (a) , low-brightness light can be irradiated in a wide range by sliding the EL panel 2 along the slide grooves 39. In addition, as shown in Fig. 27 (b) , when the respective EL panels 2 are overlapped, high-brightness light can be irradiated in a narrow range.
- Fig. 28(a) shows a configuration where the EL panels 2 are arranged in a window portion of the slide doors 7.
- a slide flame 71 retaining the slide door 7 incorporates a power supply line (not shown in the drawings), and an electric power is supplied from the power supply line to the EL panel 2.
- the EL panel 2 since transmitting light, the EL panel 2 functions as a window for daylighting when turned off and functions as the illumination device when turned on.
- the slide doors 7 is slid to overlap the EL panels 2, as is the same with the above-mentioned configuration, high-brightness light can be irradiated.
- Fig. 28(b) shows an example where a sliding door 81 of a piece of storage furniture includes the EL panel 2. Also in this configuration, as is the same with the above-mentioned configuration, when the EL panels 2 are slid, the user can arbitrarily change the irradiation range and the brightness of light.
- the present invention can be variously modified without being limited to the above-mentioned embodiments.
- the EL panel 2 includes a flat-surface light emission part 26 (see Fig. 3 ).
- the device where the plurality of light emission parts 26 are arranged in a matrix shape so as not to generate unevenness of light due to stepping-down of the voltage.
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- Non-Portable Lighting Devices Or Systems Thereof (AREA)
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JP2010294562A JP5760193B2 (ja) | 2010-12-29 | 2010-12-29 | 照明装置 |
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WO2010131172A2 (fr) * | 2009-05-15 | 2010-11-18 | Koninklijke Philips Electronics N.V. | Dispositif d'éclairage |
JP2011034725A (ja) * | 2009-07-30 | 2011-02-17 | Toshiba Lighting & Technology Corp | 面状発光ユニット及び面状発光装置 |
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2010
- 2010-12-29 JP JP2010294562A patent/JP5760193B2/ja not_active Expired - Fee Related
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2011
- 2011-12-20 EP EP11194625.7A patent/EP2473002B1/fr not_active Not-in-force
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JP2005536708A (ja) | 2002-08-26 | 2005-12-02 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 電気スチーム装置 |
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EP2711750A1 (fr) * | 2012-09-25 | 2014-03-26 | Zumtobel Lighting GmbH | Lampe à DEL dotée d'une plaque de guide d'ondes optiques |
DE102012109138B4 (de) | 2012-09-27 | 2022-05-25 | Osram Oled Gmbh | Optoelektronisches Bauelement, Verfahren zum Herstellen eines optoelektronischen Bauelementes und optoelektronische Bauelementevorrichtung |
DE102012109138A1 (de) * | 2012-09-27 | 2014-03-27 | Osram Opto Semiconductors Gmbh | Optoelektronisches Bauelement, Verfahren zum Herstellen eines optoelektronischen Bauelementes und optoelektronische Bauelementevorrichtung |
US9508682B2 (en) | 2013-01-11 | 2016-11-29 | Nec Lighting, Ltd. | Organic EL luminescent device |
EP2772957A1 (fr) * | 2013-03-01 | 2014-09-03 | Panasonic Corporation | Dispositif d'éclairage |
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US9557029B2 (en) | 2013-03-01 | 2017-01-31 | Panasonic Intellectual Property Management Co., Ltd. | Lighting device |
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US10634320B2 (en) | 2016-06-29 | 2020-04-28 | Feit Electric Company, Inc. | Lighting fixture mounting systems |
US12072082B2 (en) | 2016-06-29 | 2024-08-27 | Feit Electric Company, Inc. | Lighting fixture mounting systems |
US11496216B2 (en) | 2019-01-11 | 2022-11-08 | Joled Inc. | Optical communication system |
Also Published As
Publication number | Publication date |
---|---|
EP2473002A3 (fr) | 2013-03-20 |
EP2473002B1 (fr) | 2014-10-15 |
JP5760193B2 (ja) | 2015-08-05 |
JP2012142203A (ja) | 2012-07-26 |
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