JP4859858B2 - Luminous decoration device - Google Patents

Description

This invention relates to light-emitting decorative device using organic EL (the electroluminescence) element.

  The organic EL element is driven by a low direct current voltage, has high luminous efficiency, can be reduced in weight and thickness, and has the property of hardly generating heat. Therefore, it is used for a flat panel display (FPD) in some portable devices and the like, and there is also provided a configuration in which the element is used as a surface light source, for example, as a backlight of a liquid crystal display element.

  The organic EL element can obtain R (red), G (green), B (blue) and other luminescent colors by selecting the material used for the EL luminescent layer. In addition, by combining two or more kinds of emission colors, it becomes possible to obtain white or an emission color close to this. Therefore, by configuring the organic EL element as a surface light source (light emitting panel), for example, it can be used as a light source for decoration or a highly efficient light source for illuminating a room or the like.

Patent Documents 1 and 2 and the like shown below utilize the characteristics of the organic EL element described above and utilize this as a surface-emitting illumination device.
JP 2003-7450 A JP 2004-234868 A

  In the illuminating devices disclosed in Patent Documents 1 and 2, when an organic EL element is used as a surface light source, the problem is to mainly prevent the occurrence of luminance unevenness, Therefore, the organic EL element is limited to use as a monotonous surface emitting source.

  By the way, the above-described organic EL element can be formed by sequentially forming a transparent electrode made of ITO or the like on the substrate surface, a light emitting functional layer made of an organic material, and a back electrode in order using sputtering or vacuum deposition. it can. Therefore, when a film-like material having elasticity is used for the substrate, a light source having a flexible light emitting surface can be obtained.

  As described above, the present invention is made by paying attention to a flexible surface light source that uses the elasticity of a film-like substrate, and in particular, a user sets a surface light source formed in a long shape into an arbitrary shape. It is an object of the present invention to provide a light-emitting decoration device that is excellent in decoration effect and can produce a good presentation effect and atmosphere when it is used for, for example, a table light. It is.

A light emitting decoration device according to the present invention made to solve the above-described problems includes a light emitting member in which an organic EL element is formed on at least one surface of a substrate made of a long elastic material, and the light emitting member. A pair of base members each having a hexahedron attached to each end, and the pair of base members can support the long light emitting member in a suspended state in the air In each of the pair of base members constituted by hexahedrons, the surface of the pair of base members is floated by selecting one of the surfaces as a bottom surface and selecting an arrangement position and an arrangement posture of the pair of base members. It is characterized in that the shape of the light emitting member formed in a long shape can be changed.

In this case, any one of the pair of base members is provided with a power supply unit that can supply a lighting drive current to the organic EL element .

Furthermore, a power switch that can turn on / off the lighting drive current from the power supply unit to the organic EL element is disposed on one base member or the other base member provided with the power supply unit. Is desirable .

According to the light-emitting decoration device having the above-described configuration, the base member that forms the hexahedron is attached to both ends of the light-emitting member formed in a long shape. The loop shape formed by the light emitting member formed in a long shape can be arbitrarily set by placing the surface on the table surface, for example.

  That is, by selecting the arrangement position of the pair of base members and the posture of each base member, it is possible to create various light loop shapes with the light emitting members and enjoy them as light objects. Therefore, when used for a table light or the like as described above, it is possible to provide a light emitting decoration device excellent in decoration effect that can achieve a good production effect and atmosphere.

Then, in Rukoto to form organic EL element to the substrate, to obtain a high luminous efficiency without generating heat by driving power source of a low voltage can, also a characteristic that it is possible very lightweight and thinner as it By taking advantage of this, it is possible to easily form a light loop of a desired shape.

  DESCRIPTION OF EMBODIMENTS Hereinafter, a light emitting decoration device according to the present invention will be described based on embodiments shown in the drawings. 1 to 3 show the overall configuration of a light emitting decoration device according to the present invention, and all are representative examples of a loop shape formed by a long light emitting member. Yes. Below, the structure of each part which showed the same part with the same code | symbol is each demonstrated referring a code | symbol.

Reference numeral 1 in FIGS. 1 to 3 shows a light emitting member formed in a long shape, which is mainly formed by molding a substrate 2 made of a transparent synthetic resin material having elasticity into a long shape (band shape). It has become. On one surface of the substrate 2, organic EL elements 3a and 3b are formed in parallel with each other along the longitudinal direction of the substrate.

In the embodiment, the organic EL element is formed in a state of being separated into two along the longitudinal direction of the substrate 2, but this is formed on the entire surface along the longitudinal direction of the substrate 2. Or may be formed intermittently in the longitudinal direction .

  In order to form an organic EL element on the substrate 2, for example, a transparent electrode made of ITO or the like is formed on the substrate surface by, for example, a sputtering method. A light emitting functional layer made of an organic material and a metal back electrode mainly composed of a material such as aluminum can be formed thereon by forming a film using, for example, a vacuum deposition method.

  According to this configuration, the light from the light emitting functional layer is led out to the outside through the transparent electrode and the substrate 2 made of a transparent material. The emission color of the organic EL element is generally preferably white, but various emission colors can be adopted according to preference by selecting a material for the light emitting functional layer.

  In this case, as described above, a transparent synthetic resin material having elasticity is used as the material of the substrate 2, and for example, polyethylene terephthalate (PET), polyethersulfone (PES), or the like can be suitably used. A transparent electrode made of ITO or the like is formed on the substrate 2 by using, for example, a sputtering method. At this time, since a synthetic resin material is used as the substrate 2 described above, the process temperature is limited due to the heat resistant temperature. For this reason, the transparent electrode may not be grown into sufficient crystallized ITO and may be in an amorphous ITO state.

  The amorphous ITO described above causes a problem of promoting the oxidation of an organic material functioning as a light emitting functional layer formed thereon, and thus a metal oxide semiconductor is formed as a buffer layer on the ITO film. It is desirable to film. As a material for forming the buffer layer, chromium oxide (CrOx), nickel oxide (NiOx), or the like can be used.

Then, on the the buffer layer, the light-emitting functional layer of an organic material, and a back electrode of a metal material by depositing by using a means such as deposition in order organic EL element 3 a, to form a 3b it can. In this case, preferably to cover the organic EL element 3 a, the 3b, it is desirable to laminate a film-like resin having a further gas barrier properties on the back. Thereby, the said light emission functional layer, a back electrode, etc. can be isolated from the water | moisture content, oxygen, etc. in air | atmosphere, and it can contribute to extending the lifetime of an organic EL element.

Further, preferably between the laminate resin substrate 2, by inserting arranged a pair of feeder lines (not shown), an organic EL element 3 a formed along the longitudinal direction of the substrate 2, relative 3b Thus, a light emission drive current can be supplied from a base member formed in a hexahedron described later.

Each end of the light emitting member 1 is attached to a pair of base members 4a and 4b formed in a hexahedron . The base members 4a and 4b in this embodiment constitute hexahedrons surrounded by two opposing square surfaces and four rectangular surfaces orthogonal thereto. And the edge part of the said light emission member 1 is each attached to the edge part of one rectangular surface of the said base members 4a and 4b so that it may orthogonally cross the said surface.

FIG. 4 illustrates the configuration of one of the two base members described above. The base member 4a houses a power supply means that can supply a lighting drive current to the organic EL elements 3a and 3b in the light emitting member 1, that is, a battery 5 in this embodiment. The base member 4a is configured so that one surface of the base member 4a can be opened and closed, whereby the battery 5 can be replaced.

  A power switch 6 for controlling on / off of the drive current from the battery 5 is disposed on one surface of the base member 4a formed in a square shape. As this power switch, a push switch is preferably used. For example, a switch that is turned on by a first push operation and returned to an off state by a second push operation is used.

In the embodiment shown in FIG. 4, an external input terminal (DC input terminal) 7 is further disposed on the square surface of the base member 4a. That is, when the external input terminal 7 is used to receive power from the outside, the organic EL elements 3a and 3b can be driven to emit light without using the battery 5. In this case, the connection portion including the external input terminal 7 functions as a power feeding means.

  Thus, as shown in FIG. 1, the base members 4a and 4b are placed on a table surface (not shown), for example, apart from each other, with the mounting surfaces of the light emitting members 1 on the base members 4a and 4b facing up. Thus, the light emitting member 1 can be in a state in which an inverted U-shaped half loop is formed. In this case, the pair of base members 4a and 4b has a weight capable of supporting the light emitting member 1 formed in a long shape in a suspended state.

Then, by turning on the power switch 7 provided in the base member 4a, the organic EL elements 3a and 3b in the light emitting member 1 are turned on, and the light emitting decoration device shown in the embodiment functions as a table light. Become.

  The form of the light emitting member 1 shown in FIG. 1 shows the most basic example when the light emitting decoration device according to the present invention is used as, for example, a table light. However, a loop of one rotation is further added to the light emitting member 1. Thus, the form shown in FIG. 2 can be obtained. Further, the base members 4a and 4b can be placed on the table surface by aligning the square surfaces of the base members 4a and 4b, so that the form shown in FIG.

  Although not shown in particular about other forms, it is possible to select a long shape by selecting the arrangement position of the pair of base members 4a and 4b and the posture of each base member (position of the mounting surface of the light emitting member 1). Various light loop shapes can be created by the light emitting member 1 formed in a shape, and thereby, the unique operational effects described in the column of the effect of the invention described above can be obtained.

  In addition, by using two or more sets of the light emitting decoration device shown in the figure, it is possible to obtain more various decoration effects, and in addition to the table light described above, it can function as a display together with exhibits and displays. it can.

In the embodiment described above, the organic EL elements 3a and 3b in the light-emitting member 1 are configured to emit light on one surface thereof. However, by forming two light-emitting members 1 having the same configuration on top of each other, It can also be used as a light emitting member. In addition, by forming a metal back electrode, a light emitting functional layer, and a transparent electrode made of ITO or the like in this order on both surfaces of a single substrate, a light emitting member that can similarly emit light on both surfaces can be obtained. .

  Furthermore, in the above-described embodiment, for example, a battery and a power switch as power supply means are arranged on one base member, but the power switch does not include the power supply means. You may be comprised so that it may arrange | position to a member.

It is the perspective view which showed the example of the 1st arrangement pattern of the light emission decoration device concerning this invention. It is the perspective view which showed the example of the 2nd arrangement pattern similarly. It is the perspective view which showed the example of the 3rd arrangement pattern similarly. It is the front view which showed the structure of one base member in the light emission decoration device.

1 light emitting member 2 substrate 3a, 3b organic EL element <br/> 4a, 4b base member 5 feed means (batteries)
6 Power switch 7 External input terminal

Claims (3)

A light emitting member in which an organic EL element is formed on at least one surface of an elongated elastic substrate, and a pair of base members each attached to each end of the light emitting member and each configured by a hexahedron And
The pair of base members has a weight capable of supporting the elongated light emitting member in a suspended state,
In each of the pair of base members constituted by hexahedrons, a long shape in a state of floating in the air by selecting an arrangement position and an arrangement posture of the pair of base members with either surface as a bottom surface A light emitting decoration device, characterized in that the form of the light emitting member formed on the device can be changed. 2. The light emitting decoration device according to claim 1, wherein at least one of the pair of base members is provided with a power feeding unit capable of supplying a lighting driving current to the organic EL element. . One base member provided with the power supply means or the other base member is provided with a power switch capable of on / off controlling the supply of a lighting drive current from the power supply means to the organic EL element . The light emitting decoration device according to claim 2.

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