JP4487868B2 - Surface emitting panel and lighting device - Google Patents

Description

  The present invention relates to a surface light emitting panel such as an EL (electroluminescence) panel for illumination, and an illumination device.

  Since the EL panel is a surface-emitting light source, it is expected to be applied to the illumination field. Until now, application to the lighting field has been difficult due to various problems such as low optical performance of EL panels, low moisture resistance, and short life due to material deterioration.

  However, recent technological developments have made dramatic progress in both optical performance and durability, and applications to the lighting field are becoming possible. In addition, several inventions that solve various problems in application to the lighting field have been disclosed. For example, Patent Documents 1 and 2 disclose inventions relating to a method for easily connecting an illumination panel formed of an EL panel to an existing illumination power supply component and replacing the illumination panel. The above Patent Documents 1 and 2 are excellent inventions in that the EL panel can be easily replaced by the user when it becomes impossible to emit light due to deterioration with time or damage, or when the amount of light decreases and cannot be used. is there.

  However, in these Patent Documents 1 and 2, when exchanging the EL panel, the user needs to attach and detach the panel directly by hand.

  For this reason, when a fragile material such as glass is used for the substrate or sealing cover, the EL panel itself is very thin, making it difficult to attach and detach, and in some cases there is a risk of damage or failure due to the force applied during attachment or detachment. It was. For this reason, there is a need for an EL panel that is easy for a user to hold in an EL panel for illumination that is attached to the appliance body and periodically replaced.

Another problem when using the EL panel as a lighting application is to emit light uniformly over a large area. On the other hand, it is possible to emit light uniformly over a large area by devising an electrode structure or forming an auxiliary electrode. However, since a complicated process is required for electrode formation, the manufacturing cost increases, and it is difficult to use as an alternative to an inexpensive fluorescent lamp light source. On the other hand, there has been no specific disclosure about the size of the EL panel.
JP 2004-31341 A JP 2004-127910 A

  In view of such circumstances, an object of the present invention is to provide an illumination surface emitting panel and an illumination device that emit light uniformly and uniformly, are easy to handle by a user, and can be safely replaced.

  As a result of repeated researches to solve such problems, the inventors have invented a surface emitting panel for illumination that is easy for a user to hold and replace.

The surface light-emitting panel of the present invention has a width dimension that allows the panel main body to have a light-emitting surface and has a first electrical contact at the peripheral edge and can be gripped with one hand. The frame has a second electrical contact that contacts the first electrical contact, and is provided at the peripheral edge of the panel body. The outer surface of at least one side of the frame body is configured to prevent slipping when the panel body is gripped, and the frame bodies of the panel body are engaged with each other in a state where a plurality of the panel bodies are arranged. It is formed in an uneven shape.

  The said structure WHEREIN: The said panel main body is a square, The space | interval of at least a pair of side | side which opposes has the said width dimension of the said holding part, and the said width dimension is 50 mm or more and 150 mm or less.

  The said structure WHEREIN: The said panel main body is a non-square shape containing circular, The diameter or width | variety has the said width dimension of the said holding part, and the said width dimension is 50 mm or more and 150 mm or less.

In the above-described configuration, a notch for forming a hole-like recess into which a finger can be inserted between the frame bodies in a state where the frame bodies of the plurality of panel main bodies mesh with each other in the uneven shape, It is formed in the uneven part of the body.

  In the illumination device according to the present invention, the fixture body has a mounting portion for detachably mounting the surface emitting panel.

According to the surface light emitting panel of the present invention , the panel main body has a width dimension that can be held with one hand , so that even if the user is an adult woman with a small hand, for example, when replacing the EL panel, it is easy to hold with one hand. Easy to replace, safe. Moreover, it is possible to obtain a uniform light emission by suppressing the voltage drop due to the transparent electrode without taking the complicated electrode forming means as in the prior art, and there is an effect that the manufacturing cost can be reduced. Furthermore, it is possible to control the film thickness of the light emitting layer within an appropriate range, and it is possible to obtain irradiation light with no light emission unevenness, which is an important optical performance as an EL panel for illumination. If at least part of the frame provided on the periphery of the surface emitting panel for lighting is uneven, it will be easier for the user to touch the finger, improving ease of handling, damaging the EL panel during handling, You can prevent the risk of injury. Further, when the concavo-convex shapes are engaged when connecting a plurality of panel main bodies, there is also an effect of preventing mutual displacement of the panel main bodies.

The shape of the surface-emitting panel is prismatic shape, and because it has a width dimension which also serves as a grip portion, since the specific dimension between the pair of opposite sides is at least 50mm 150mm or less, for example, illuminate the EL panel applications As useful.

That is , when the panel size is large, a large difference occurs in the thickness of the light emitting layer between the end portion and the central portion of the substrate, so that uneven light emission occurs. Also, if the panel size is too small, the ratio of the non-light emitting area of the peripheral area to the area of the light emitting area will increase when a planar light source is used using a plurality of panels, so the luminous flux per unit area will decrease. since, Ru narrowed range of applications of the lighting field.

  The surface emitting panel for lighting is a non-square shape including a circle, and the diameter or width dimension is 50mm or more and 150mm or less, so it is possible to obtain a circular light distribution like a downlight or a spotlight, and the living room of the house This is particularly preferable in applications such as space lighting and display lighting of products in stores.

  A first embodiment of the present invention will be described with reference to FIG. That is, FIG. 1A shows a light emitting surface side perspective view of a surface light emitting panel using an EL panel for illumination, and FIG. 1B shows a non-light emitting surface side perspective view thereof.

In the first embodiment, the shape of the panel body 1 is a quadrangle such as a square, and the distance X between opposite sides is set to 50 mm or more and 150 mm or less, for example. Reference numeral 4 denotes a light emitting surface. Further, a plurality of electrical contacts 3 a for connecting to an external power source are disposed on the non-light emitting surface side at the peripheral edge of the panel body 1. Although the electrical contact 3a is disposed on the non-light emitting surface side, there is no problem even if it is provided on the light emitting surface 4 side due to the mutual positional relationship with the appliance side electrical contact.

FIG.1 (c) is sectional drawing of the panel main body 1 in 1st Embodiment. Since each layer is very thin, the scale is not as shown. 5 is a transparent substrate, 6 is a transparent electrode, 7 is an organic light emitting layer, 8 is a metal electrode, and 9 is a sealing cover. That is, after forming the transparent electrode 6 made of ITO (indium tin oxide) or the like on the transparent substrate 5 made of glass or the like, the organic light emitting layer 7 is laminated. Thereafter, a metal electrode 8 made of Al or the like is laminated, and then sealed with a sealing cover 9. Thereafter, the electrical contact 3a disposed on the sealing cover 9, the transparent electrode 6 and the metal electrode 8 are electrically connected through the conductive portions 11 and 12, respectively, to constitute an EL panel.

  Note that in the first embodiment, the method for manufacturing an EL panel has been described using an example, but the method for manufacturing an EL panel is not limited in any of the embodiments in this specification.

  According to the surface light emitting panel of the present invention, since the holding portion 2 having an interval facing at least a part of the outer shape of the EL panel is 50 mm or more and 150 mm or less, the user can easily hold the EL panel with one hand when replacing the EL panel. Easy to replace, safe.

  A second embodiment of the present invention will be described with reference to FIG. FIG. 2A is a perspective view of the light emitting surface side of the EL panel, and FIG. In the second embodiment, the distance X between opposite sides of the panel body 1 of the hexagonal EL panel is set to, for example, 50 mm or more and 150 mm or less as the width dimension of the grip portion 2. The frame body 10 is disposed on the peripheral edge of the panel body 1, and a plurality of electrical contacts 3 for connecting to an external power source (not shown) are provided on the lower surface of the frame body 10. Here, as a material which comprises the frame 10, it is desirable that it is a material which is hard to crack, such as resin compositions, such as a plastic and rubber | gum, and metals, such as aluminum, iron, and magnesium. The disposing means for disposing the frame 10 on the EL panel can be selected within a range that does not impede practically, such as mechanically fitting or bonding with an adhesive. Furthermore, if a means capable of separating the panel main body 1 and the frame body 10 later constituting the EL panel is selected as the disposing means, the frame body 10 can be reused when the deteriorated EL panel is replaced, or It is possible to recycle by separating the waste, which is beneficial for the protection of the global environment.

  Examples of the means for forming the electrical contact 3 include forming a metal layer by plating or vapor deposition, attaching a metal plate, and molding a plastic by mixing a conductive material.

  Further, a plurality of panel bodies 1 are arranged, and the frame bodies 10 are connected to each other at, for example, the sides. Others are the same as in the first embodiment.

  According to the second embodiment, by connecting a number of EL panels, it can be freely shaped according to the space where the user wants to illuminate planar illumination or line illumination that expands in two dimensions. Can be configured.

  Moreover, it is possible to obtain uniform light emission in a large area without taking the complicated electrode forming means as in the prior art, and there is an effect that the manufacturing cost can be suppressed. Furthermore, since the film thickness of the light emitting layer can be controlled within an appropriate range, it is possible to obtain irradiation light with no unevenness of light emission, which is an important optical performance as an EL panel for illumination.

  Note that the shape of the surface light emitting panel is not limited to a hexagon, and other square shapes are possible. The square shape includes a triangle shape or more, but in order to form a planar light source by connecting a plurality of surface light emitting panels, a triangle shape, a square shape, a hexagon shape, and an octagon shape are desirable for lighting applications.

  Further, by providing the frame body 10 at the peripheral edge of the panel body 1, the strength and impact resistance of the panel body 1 can be improved, which is a more preferable form. The frame 10 may be provided on a part of the peripheral edge.

  Furthermore, it is also possible to form the frame body 10 from a conductive material in advance and to insulate and cover the portions other than the contact portions to be the electrical contacts 3.

  A third embodiment of the present invention will be described with reference to FIG. FIG. 3 shows a perspective view of the light emitting surface side of the EL panel according to the third embodiment. In the third embodiment, the panel body 1 is circular, and the diameter X is, for example, not less than 50 mm and not more than 150 mm. By making the panel body 1 substantially circular, a circular light distribution such as a downlight or a spotlight can be obtained. Others are the same as those in the first embodiment.

  The panel may be a non-square shape other than a circle, that is, a shape having no corners, for example, an oval shape.

  FIG. 4 shows a perspective view of the light emitting surface side of the fourth embodiment of the present invention. In the fourth embodiment, the frame 10 can be separated from the EL panel. With the separation structure, when the EL panel deteriorated as described above is replaced, it is possible to recycle the frame body or to recycle it by separating it.

  In the fourth embodiment, the rectangular panel body 1 has a structure that can be separated into an L shape on the diagonal line. However, it may be separated into two parts of a U shape and a straight shape, or three or more. These parts may be separated, and the shape and number of parts to be separated are not limited at all.

A fifth embodiment of the present invention will be described with reference to FIG . FIG. 5 is a perspective view of the light emitting surface side of the EL panel. In the first embodiment, the frame body 10 is provided on the peripheral edge of the panel body 1, and the slip stopper 13 is provided on a part of the frame body 10. The anti-slip 13 is attached to the frame 10 as a separate part made of silicon rubber.

  The anti-slip 13 may be provided on the entire periphery of the peripheral edge of the panel body 1, or the frame body 10 itself may be formed of a material having an anti-slip action. When the frame body 10 is not provided, a slip stopper 13 is provided on the peripheral edge of the panel body 1.

A sixth embodiment of the present invention is shown in FIG . FIG. 6 is a perspective view of the light emitting surface side of the EL panel. The frame body 10 is provided in the peripheral part of the panel main body 1 of 1st Embodiment, and the anti-slip | skid 13 is formed by forming the fine uneven | corrugated part in the frame body 10. FIG. The fine concavo-convex portion is formed directly on the frame body 10 by a sandblasting method or the like, or formed by transferring a texture of a mold when the frame body 10 is formed, but the formation method is not limited at all.

  It is also possible to manufacture an EL panel using a substrate 5 in which a fine uneven portion for preventing slip is directly formed.

  A seventh embodiment of the present invention is shown in FIG. FIG. 7 is a perspective view of the light emitting surface side of the EL panel. That is, it is an example of a configuration in which the frame body 10 is provided on the peripheral edge portion of the panel body 1 of the first embodiment, and a part of the frame body 10 has an uneven shape. In the seventh embodiment, corrugated irregularities 15 are provided on a pair of opposite sides of the frame 10. By providing such an uneven portion 15, the user's finger can be easily applied, and the danger that the EL panel is damaged or the finger is injured during handling can be prevented. Further, when the concavo-convex portions 15 are engaged with each other when a plurality of panel main bodies 1 are connected, there is also an effect of preventing mutual displacement of the panel main bodies 1.

  An eighth embodiment of the invention is shown in FIG. FIG. 8 is a perspective view of the light emitting surface side of the EL panel. The eighth embodiment is an example of another configuration in which a part of the EL panel frame 10 has an uneven shape. In the eighth embodiment, a concave portion 16 is further provided in a part of the corrugated concave-convex portion 15 of the EL panel in the seventh embodiment.

  By providing such a recess 16, when a plurality of panel main bodies 1 are connected and used, when the user replaces the panel main body 1, the user holds the recess 16 with his / her finger. , Easy to replace.

  A ninth embodiment of the present invention is shown in FIG. FIG. 9 shows a schematic diagram of the illumination device. The ninth embodiment is an example of an illuminating device having a configuration in which a rectangular panel is mounted among the EL panels 18 obtained by the above embodiments.

  The illuminating device is arranged substantially in parallel between a pair of wires 17 using the instrument main body 19 as a power supply means, and the wires 17 are passed through insertion holes of a rotatable shaft part 20 provided on both sides of the central part of the instrument main body 19. In a state where a plurality of instrument main bodies 19 are attached to the wires 17 in the same manner, a large area can be illuminated by supplying power from the power source through the wires 17 and the shaft portion 20 into the instrument main body 19. . The instrument main body 19 is provided with a panel mounting portion 21 at one end so as to be rotatable, and a holding portion 22 for holding the EL panel 18 slidably above and below the panel mounting portion 21. The EL panel 18 is attached to the holding portion 22 of the panel mounting portion 21 by sliding in the horizontal direction, and the panel mounting portion 21 is rotated to overlap the light emitting surface of the EL panel 18 with the lower surface of the instrument body 19. As a result, the electrical contact 3 of the EL panel 18 comes into contact with the contact portion of the instrument body 19, and the EL panel 18 is supplied with power. When the instrument body 19 is rotated around the shaft portion 20 at an arbitrary angle, the EL panel 18 is similarly rotated, and the radiation direction can be changed to an arbitrary angle.

  Note that the electrical contact 3 of the EL panel 18 may be configured to contact the contact portion of the instrument body 19 via a contact portion (not shown) provided in the holding portion 22.

  A tenth embodiment of the present invention is shown in FIG. FIG. 10 shows a schematic view of the lighting device. The tenth embodiment is another example of a lighting device on which the EL panel 18 obtained by the above embodiment is mounted.

  The instrument main body 19 has substantially the same configuration as that of the ninth embodiment, but a rotatable shaft portion 25 of the instrument main body 19 is attached to the stand 26. Electric power can be received inside the stand 26 and through the shaft 25. The panel mounting portion 21 is configured to be detachable by sliding the EL panel 18 in the vertical direction. Reference numerals 23 and 24 denote guide portions of the EL panel 18.

  According to the tenth embodiment, an illumination stand having an extremely thin light emitting portion and excellent design can be obtained. The electric power may be supplied to the instrument main body 19 by separate wiring.

  Further, according to the ninth embodiment and the tenth embodiment, the light distribution can be controlled by changing the irradiation angle of the EL panel 18.

  The surface-emitting panel or EL panel used in the present invention and the embodiment is a unit panel used by the user to replace the lighting device as apparent from the above, and a frame is formed on at least a part of the peripheral portion. The body may be disposed.

  Further, the grip portion may be provided on at least a part of the surface light emitting panel, and may be any portion as long as it is a portion facing the peripheral portion of the panel.

(A) is the perspective view which looked at the front side of 1st Embodiment of this invention, (b) is the perspective view which looked at the back side, (c) is sectional drawing. (A) is a perspective view of 2nd Embodiment, (b) is a fragmentary sectional view. (A) is a perspective view of 3rd Embodiment, (b) is a fragmentary sectional view. It is a perspective view of 4th Embodiment. It is a perspective view of 5th Embodiment. It is a perspective view of 6th Embodiment. It is a perspective view of 7th Embodiment. It is a perspective view of 8th Embodiment. It is a perspective view of 9th Embodiment. It is a perspective view of 10th Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Panel main body 2 Gripping part 3 Electrical contact 4 Light emission surface 13 Anti-slip 15 Uneven part

Claims (5)

A panel body having a light emitting surface and having a first electrical contact at a peripheral portion and having a width dimension that can be grasped with one hand, and a second electrical contact that contacts the first electrical contact. A frame provided on the peripheral edge of the frame body, and the outer surface of at least one side of the frame body is provided with a plurality of panel bodies arranged so as to prevent slippage when the panel body is gripped. The surface light-emitting panel is formed in a concavo-convex shape so that the frame bodies of the panel body are engaged with each other .   The surface emitting panel according to claim 1, wherein the panel body has a square shape, and an interval between at least a pair of sides facing each other has the width dimension of the grip portion, and the width dimension is not less than 50 mm and not more than 150 mm.   2. The surface-emitting panel according to claim 1, wherein the panel body is a non-square shape including a circle, and the diameter or width of the panel body has the width dimension of the grip portion, and the width dimension is not less than 50 mm and not more than 150 mm. In the state in which the frame bodies of the plurality of panel bodies are meshed with each other in the concavo-convex shape, a notch for forming a hole-like concave portion into which a finger can be inserted is provided between the frame bodies. The surface emitting panel of Claim 1 formed in the location of a shape . An illumination device comprising: the surface-emitting panel according to any one of claims 1 to 4; and an appliance main body having a mounting portion for detachably mounting the surface-emitting panel .

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