JP4797682B2 - Lighting device - Google Patents

Description

  The present invention includes an illumination panel that uses EL (Electro Luminescence) such as organic EL and inorganic EL, an illumination panel power supply device that supplies power to the illumination panel, and an illumination panel and illumination panel power supply device. The present invention relates to a lighting device.

  Illumination devices that use point light sources such as light emitting diodes (LEDs) and illumination devices that use surface light emitting elements such as organic light emitting diodes (OLEDs) as illumination devices intended for use in fields that require a long life Etc. have been proposed. For example, a solid-state illumination device using an organic light-emitting diode has been proposed that includes a surface illumination light source and a socket that detachably holds the surface illumination light source (see, for example, Patent Document 1). ).

  In such a socket-type lighting device, if the socket is attached to the wall surface or the like where the lighting device is installed, the electrical wiring work can be performed simply by attaching and connecting the electrode portion of the surface lighting source to the socket. This is convenient because it is unnecessary. However, this socket type illumination device cannot avoid wearing or damaging the electrode portion when the space surface illumination light source is attached to or detached from the socket, and is not suitable for long-term use. Further, since the electrode portion attached to the socket is provided around the lighting device, it is not easy to secure the space, and it is difficult to make the entire lighting device the light emitting surface. In particular, it is not easy to form a continuous large light emitting surface by arranging a plurality of lighting devices.

  Further, in the case of using organic EL, etc., the organic EL itself is not resistant to moisture, and therefore the structure of the electrode portion must be taken into consideration for the sealing process.

2004-127910

  The present invention has been made in view of the above circumstances, and has a long life and can use the entire surface of one side of the lighting panel as a light emitting surface, a lighting panel constituting such a lighting device, and a power supply for the lighting panel An object is to provide an apparatus. The lighting panel can be easily and electrically connected to the power supply side, eliminating the need for on-site wiring work, and without having to wear the electrodes when replacing or removing the lighting panel, thus extending the service life. Another object of the present invention is to provide a lighting panel, a power supply device for a lighting device, and a lighting device that are capable of reducing the risk of electric shock and that do not protrude greatly from the installation surface and that have a good appearance.

  The illumination panel of the present invention is an illumination panel that uses EL, and has a laminated structure of a pair of electrodes and an EL light emitting layer disposed between the pair of electrodes, and is used for illumination light. A light-emitting unit that emits light, a light-emitting power supply unit that supplies power for light emission to the light-emitting unit, a translucent substrate that emits light from the light-emitting unit, and a sealing substrate that is formed by the translucent substrate A sealing member that seals the light emitting unit and the light emitting power source unit in a space, the light emitting unit is stacked on a surface of the translucent substrate on the sealing space side, and the light emitting power source unit is An induction winding for inductively coupling with an external winding, and a core member around which the induction winding is wound to form a magnetic path that is open to the outside. On the opposite side of the optical substrate, the opened magnetic path intersects the surface of the light-transmitting substrate of the sealing member where the light exits. A direction, in which the light is arranged to be released in the direction opposite to the side to be emitted.

  According to the present invention, it is possible to supply power for light emission in a non-contact manner from the surface opposite to the light emitting surface of the lighting panel, to prolong the life of the lighting panel and to cover the entire surface of one light emitting surface. The lighting device can be easily configured.

  The lighting panel of the present invention includes a lighting panel in which a plurality of the light emitting units are arranged in the sealed space. Moreover, the illumination panel of this invention contains what the said several light emission part is connected to the said light emission power supply part in series or in parallel. According to the present invention, the light emitting unit can be divided and manufactured, so that the manufacturing is simplified.

  The lighting panel of the present invention includes a lighting circuit in which the light-emitting power source unit is connected to the induction winding, and includes a drive circuit that rectifies a voltage induced in the induction winding and supplies the voltage to the light-emitting unit.

  The lighting panel power supply device of the present invention is a lighting panel power supply device that supplies power to the lighting panel, and includes a power supply unit that supplies power to the power supply unit of the lighting panel in a contactless manner, The supply unit includes an external winding connected to an external power source, and an external core member that forms an external magnetic path around which the external winding is wound, and the external core member includes the lighting panel. Is installed so as to form a closed magnetic circuit with the core member of the power supply unit of the lighting panel.

  The lighting device of the present invention includes the above-described lighting panel and the above-described lighting panel power supply device. According to the present invention, it is possible to easily supply power to the lighting panel, eliminate the need for an electrical connection process to the lighting panel in the field, and to easily replace or detach the lighting panel. In addition, since the electrode portion is not exposed to the outside, the life can be extended and the risk of electric shock is eliminated. Furthermore, since the entire illumination panel can be used as a light emitting surface, an illumination device having a good appearance can be obtained.

  In the lighting device of the present invention, the lighting panel power supply device is fixed to a mounting surface and connected to a commercial power source, and the lighting panel is an outer core member of the lighting panel power supply device. And the core member of the lighting panel are installed close to each other and face each other. According to the present invention, the lighting panel power supply device is fixed on the installation surface or the like, so that the lighting panel can be replaced or detached more easily.

  According to the present invention, it is possible to provide an illumination panel, an illumination panel power supply device, and an illumination device that have a long lifetime and have one surface as a light emitting surface.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

(First embodiment)
FIG. 1 shows a lighting device according to a first embodiment of the present invention. The lighting device includes a power supply device 1 embedded in an installation surface such as a ceiling surface 100 and a wall surface, and the power supply device 1. And a lighting panel 2 that is detachably attached to the power supply device 1 with an appropriate fitting or screw for engagement (not shown).

  The power supply device 1 includes a power supply unit 11 that supplies power to the lighting panel 2 and is connected to an external power source such as a commercial power source by a connection cord (not shown) drawn from the power supply unit 11. ing. The power supply unit 11 includes an external winding 111 connected to an external power supply, and an external core member 112 that forms an external magnetic path wound around the external winding 111 and opened to the outside. The core member 112 is disposed so as to form a closed magnetic path with the core member 232 described later of the lighting panel 2 when the lighting panel 2 is installed.

  The illumination panel 2 has a configuration in which an organic EL is used as an illumination source. As shown in FIGS. 1 to 3, the light transmitting substrate 21, the light emitting unit 22, and the light emitting unit 22 are supplied with power for light emission. A light-emitting power supply unit 23 to be supplied, a sealing member 24 that seals the light-emitting unit 22 and the light-emitting power supply unit 23, and a drive circuit 25 (see FIG. 6B) are provided.

  The translucent substrate 21 is for emitting light emitted from the light emitting unit 22 to the outside, and is formed of a transparent member or a translucent member having translucency. In the present embodiment, the light emitting unit 22 is fixed to the surface of the translucent substrate 21 opposite to the exit surface from which the light from the light emitting unit 22 is emitted (a surface on the sealed space side described later).

  The light emitting unit 22 is laminated on a surface of the translucent substrate 21 which will be described later, and the outer surface is sealed with a sealing layer 224. The light emitting unit 22 is formed by laminating at least three layers of a pair of electrodes, that is, an ITO electrode 221 and a metal electrode 222 and an EL light emitting layer 223 disposed between the ITO electrode 221 and the metal electrode 222. The EL light-emitting layer 223 is configured to emit light when holes (holes) and electrons generated inside are combined, and this light is used as illumination light. In the present embodiment, an organic EL element is used for the light emitting unit 22, and the present invention is not particularly limited thereto, and an inorganic EL element may be used for the light emitting unit. Further, the driving of the organic EL element may be DC voltage driving or AC voltage driving.

  As shown in FIG. 4, the light-emitting power supply unit 23 includes an induction winding 231 for inductively coupling with the external winding 111, and a ferrite that forms the magnetic path opened to the outside by winding the induction winding 231. And a core member 232 formed of the like.

  The core member 232 is disposed such that one surface is open and the open side is in a direction opposite to the surface of the light emitting unit 22 facing the translucent substrate 21. Therefore, the magnetic path formed in the core member 232 is released in a direction intersecting with the emission surface of the translucent substrate 21 from which light from the light emitting unit 22 is emitted, and in a direction opposite to the emission surface side. As shown in FIG. 4, the induction winding 231 of the present embodiment is aligned and wound around the outer periphery of the bobbin 233, and the core portion of the core member 232 is inserted into the center of the bobbin 233. The core member 232 may be fixed to the sealing member 24 as shown in FIG. 5 (A), or may be fixed to the light emitting portion 22 as shown in FIG. 5 (B).

  The sealing member 24 is fixed to one surface of the translucent substrate 21. In particular, a space formed between the translucent substrate 21 and the sealing member 24 (this is referred to as “sealing space”). ) In an airtight state so that moisture does not flow in from the outside.

  Next, power supply of the lighting device will be described with reference to FIG. The power supply device 1 includes a rectifying diode bridge D1 and a smoothing capacitor C1, which are connected to a commercial power source V via a first switch SW1, an AC generating inverter I, and an external winding constituting a primary coil. A line 111 and a second switch SW2 are provided. The first switch SW1 is a hand switch that is attached to a wall surface to connect / disconnect the electrical connection between the lighting device and the commercial power source, and the second switch SW2 is a hand switch that is connected / disconnected by pulling. In addition, when the light emission part 22 of the illumination panel 2 is comprised by the several thing, you may comprise so that some light emission parts 22 may be connected / disconnected by operation of this 2nd switch SW2.

  The induction winding 231 of the lighting panel 2 constitutes a secondary coil that is disposed opposite to the primary coil (external winding 111) in a close state and generates electromotive force by electromagnetic induction, and is induced by the induction winding 231. The applied voltage is applied to the light emitting unit 22, and the light emitting unit 22 emits light.

  The lighting panel 2 may be provided with a drive circuit 25 that rectifies and smoothes the voltage induced in the induction winding 231 as shown in FIG. The drive circuit 25 includes a rectifying diode D2 and a smoothing capacitor C2.

Next, the attachment method of the illuminating device of this embodiment is demonstrated. When the lighting device of this embodiment is installed on an installation surface (for example, the ceiling surface 100), when a building or the like to which the lighting device is attached is constructed, a recess 100A is formed in advance on the ceiling surface 100 side where the lighting device is installed. In addition, in order to supply power to the lighting device from a commercial power source, the power supply device 1 is embedded in advance in the recess 100A in a state where the commercial power source and the power supply device 1 are electrically connected.
And the illumination panel 2 which the user who uses this illuminating device can attach according to the power supply device 1 is prepared, and it attaches so that the sealing member 24 may face the power supply device 1 of a ceiling surface. In other words, the lighting panel 2 is attached to the power supply device 1 or a mounting bracket (not shown) provided on the ceiling surface 100 by being engaged or screwed with the translucent substrate 21 facing the room.

  As described above, since the lighting panel 2 can be attached without being electrically connected, the attachment can be easily performed. Further, the portion protruding from the ceiling surface is only the lighting panel 1, and the lighting panel 2 can be significantly reduced in thickness by using the organic EL for the light emitting portion 22, so that the appearance is also excellent. Good installation is possible.

(Second Embodiment)
Next, the illuminating device of the 2nd Embodiment of this invention is demonstrated. As shown in FIG. 7, the lighting panel 2 of the lighting device according to the present embodiment includes a plurality of light emitting units 22 (specifically, four light emitting units 22 </ b> A to 22 </ b> D) on a single translucent substrate 21. It is installed. In addition, the lighting panel 2 of the present embodiment is provided with the same number of light emitting power supply units 23 to supply power to the light emitting units 22 corresponding to the light emitting units 22, and the power supply device 1. The same number of power supply units 11 (in the case of the present embodiment, consisting of four power supply units 11A to 11D) are installed in the parts corresponding to the light emission power supply unit 23.

  The power supply unit 11, the light emitting power source unit 23, and the light emitting unit 22 may be connected in series as shown in FIG. 8A, for example, or may be connected in parallel as shown in FIG. May be. If the parallel connection is used, even if a part of the power supply unit 11 or the light emitting power source unit 23 breaks down, all the light emitting units 22 can emit light.

  The present invention is not limited to the embodiment described above, and can be implemented in various forms without departing from the gist of the present invention.

  INDUSTRIAL APPLICABILITY The present invention is useful as a lighting device that has a long life and can use the entire surface of one side of the lighting panel as a light emitting surface, a lighting panel that constitutes such a lighting device, a power supply device for the lighting panel, and the like.

Schematic sectional view of the lighting device according to the first embodiment of the present invention. The cross-sectional view of the illumination panel of the illuminating device of the 1st Embodiment of this invention 1 is a cutaway view of a light emitting part of a lighting device according to a first embodiment of the present invention. The disassembled perspective view of the light emission power supply part of the illuminating device of the 1st Embodiment of this invention. (A) is sectional drawing which shows the structure which fixed the light emission power supply part of the illuminating device of the 1st Embodiment of this invention to the sealing member, (B) is light emission of the illuminating device of the 1st Embodiment of this invention. Sectional drawing which shows the structure which fixed the power supply part to the light emission part The figure which shows the electrical connection structure of the illuminating device of the 1st Embodiment of this invention. Schematic sectional view of a lighting device according to a second embodiment of the present invention. (A) is a figure which shows the state which connected the light emission power supply part and light emission part of the illuminating device of the 2nd Embodiment of this invention in series, (B) is the light emission power supply part of the illuminating device of the 2nd Embodiment of this invention. Showing a state in which the light emitting unit and the light emitting unit are connected in parallel

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Power supply apparatus 11 Power supply part 111 External winding 2 Illumination panel 21 Translucent board | substrate (translucent member)
22, 22A-22D Light emission part 221 ITO electrode 222 Metal electrode 223 EL light emission layer 23, 23A-23D Light emission power supply part 231 Induction winding 232 Core member 24 Sealing member 25 Drive circuit 100 Ceiling surface 100A Recess

Claims (1)

A light emitting unit that has a laminated structure of a pair of electrodes and an organic EL light emitting layer disposed between the pair of electrodes, and emits light for illumination;
A light-emitting power supply for supplying power for light emission to the light-emitting unit;
A translucent substrate from which light from the light emitting part is emitted;
The light-transmitting substrate is fixed to a surface opposite to the light emitting side to form an airtight sealed space, and the light emitting unit and the light emitting power supply unit are sealed in the sealed space. A sealing member,
The light emitting unit is laminated on the surface of the translucent substrate on the sealing space side,
The light emitting power supply unit includes an induction winding for inductively coupling with an external winding, and a core member around which the induction winding is wound to form a magnetic path opened to the outside,
The core member is on the opposite side of the light emitting part from the light transmissive substrate, and the opened magnetic path intersects the light emitting surface of the light transmissive substrate of the sealing member. A lighting panel disposed so as to be released in a direction opposite to a surface side from which the light is emitted ;
A power supply unit for supplying power in a non-contact manner to the power supply unit of the lighting panel
The power supply unit includes an external winding connected to an external power supply, and an external core member around which the external winding is wound to form an external magnetic path opened to the outside,
The external core member includes a lighting member power supply device disposed so as to form a closed magnetic circuit with a core member included in a power supply unit of the lighting panel when the lighting panel is installed,
A lighting device in which the lighting panel power supply device is embedded in an installation surface and connected to a commercial power source.

Images