JP2011014489A - Luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a luminaire equipped with a fluorescent lamp and an organic EL as light sources, which reduces a burden placed on a lighting circuit of the fluorescent lamp by the heat generated by the organic EL.SOLUTION: The luminaire 1 includes the fluorescent lamps 11, 12 forming a ring shape, the organic EL 13 forming the ring shape and arranged with its center coincident with those of the fluorescent lamps 11, 12, the lighting circuit 14 for lighting the fluorescent lamps 11, 12 and the organic EL 13, and a sheet metal 10 to which the fluorescent lamps 11, 12, the organic EL 13, and the lighting circuit 14 are fixed. The organic EL 13 is arranged lower than the fluorescent lamps 11, 12, and spaced from the fluorescent lamps 11, 12 in a height direction. The lighting circuit 14 is arranged at the center of the ring of the organic EL 13, and spaced from the organic EL 13 in a horizontal direction.

Description

  The present invention relates to a lighting fixture, and more particularly to a lighting fixture including a fluorescent lamp and an organic EL (Electro Luminescence) as a light source.

  Currently, lighting fixtures capable of dimming fluorescent lamps from 5% to 10% of the total light state are in widespread use as household lighting fixtures equipped with fluorescent lamps.

  In this type of lighting fixture, generally, a fluorescent lamp is lit at a high frequency by a high-frequency output of an inverter circuit, and the fluorescent lamp is dimmed by changing the output of the inverter circuit.

  Patent Document 1 discloses a lighting fixture including an organic EL panel as a main light source. FIG. 3 is a schematic plan view of the luminaire 100 disclosed in Patent Document 1 as viewed from below.

  In the lighting fixture 100 of Patent Document 1, the organic EL panel 101 is almost entirely configured. The organic EL panel 101 includes a glass substrate and an electrode layer, an organic light emitting layer, an electrode, and the like laminated on the glass substrate, and an opening 102 is formed at the center. In the opening 102, light emitting elements such as LEDs and lamps are arranged as auxiliary light sources.

JP 2007-173424 A

  By the way, in the lighting fixture capable of dimming the above-mentioned fluorescent lamp, there is a concern that when the brightness of the fluorescent lamp is lowered to a minimum level, the fluorescent lamp is blackened because the preheating current does not sufficiently flow through the filament of the fluorescent lamp. Is done.

  Therefore, in order to avoid the blackening of the fluorescent lamp described above, it is conceivable to attach an organic EL that is easily dimmable to a lighting fixture equipped with the fluorescent lamp. However, if the organic EL is disposed close to a fluorescent lamp or an organic EL lighting circuit, a large burden is applied to the lighting circuit due to heat generated by the organic EL.

  The present invention has been made in view of such circumstances, and is a lighting fixture including a fluorescent lamp and an organic EL as a light source, and a load applied to the fluorescent lamp and the lighting circuit of the organic EL by heat generated by the organic EL. An object of the present invention is to provide a lighting apparatus that can keep the size of the lamp small.

  In order to achieve the above object, a lighting apparatus according to the present invention includes a fluorescent lamp, an organic EL that is disposed below the fluorescent lamp in a height direction, the fluorescent lamp, A lighting circuit provided for lighting the organic EL and disposed separately from the organic EL, and a sheet metal to which the fluorescent lamp, the organic EL, and the lighting circuit are fixed. .

  According to the lighting fixture of the present invention, the burden applied to the lighting circuit due to the heat generated by the organic EL can be reduced by arranging the lighting circuit apart from the organic EL.

It is a perspective view of the lighting fixture in embodiment of this invention. It is the schematic plan view which looked at the lighting fixture in embodiment of this invention from the bottom. It is the schematic plan view which looked at the lighting fixture shown by patent document 1 from the bottom.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals, and description thereof will not be repeated. FIG. 1 is a perspective view of a lighting fixture 1 according to the embodiment of the present invention, and FIG. 2 is a schematic plan view of the lighting fixture 1 according to the embodiment of the present invention as viewed from below.

  The luminaire 1 includes a sheet metal 10, two fluorescent lamps 11 and 12, an organic EL 13, and a lighting circuit 14 for lighting the fluorescent lamps 11 and 12 and the organic EL 13, and includes the fluorescent lamps 11 and 12 and the organic EL 13. The lighting circuit 14 is fixed to the sheet metal 10.

  The fluorescent lamps 11 and 12 and the organic EL 13 have an annular shape, and as shown in FIG. 2, the diameter of the fluorescent lamp 11 is larger than the diameter of the fluorescent lamp 12, and the diameter of the organic EL 13 is the fluorescent lamp. It is about the same as the diameter of 11.

  The fluorescent lamps 11 and 12 and the organic EL 13 are arranged with their centers aligned. The lighting circuit 14 is disposed at the center of the ring of the organic EL 13 and is separated from the organic EL 13 in the horizontal direction. Further, the fluorescent lamp 11 and the fluorescent lamp 12 are arranged at the same height, and the organic EL 13 is arranged below the fluorescent lamps 11 and 12 and is separated from the fluorescent lamps 11 and 12 in the height direction. ing.

  The lighting fixture 1 configured as described above has an appearance similar to a widely used domestic lighting fixture.

  That is, the luminaire 1 is configured so as not to have a large difference in appearance with respect to an existing luminaire including an annular fluorescent lamp and an annular shade disposed below the organic lamp 13. Is made annular like the fluorescent lamps 11 and 12 and arranged below the fluorescent lamps 11 and 12, thereby giving the organic EL 13 an appearance similar to that of the shade.

  The lighting circuit 14 can dimm the fluorescent lamps 11 and 12 by changing the high-frequency output, and can dimm the organic EL 13 by PMW control or current adjustment.

  In the luminaire 1, in order to avoid blackening of the fluorescent lamps 11 and 12, the object to be dimmed by the lighting circuit 14 is switched with a predetermined illuminance as a boundary. That is, illumination brighter than 20% of the total light state of the fluorescent lamps 11 and 12 is obtained by the lighting circuit 14 dimming the fluorescent lamps 11 and 12, and illumination darker than 20% of the total light state is The lighting circuit 14 is obtained by dimming the organic EL 13.

  Also, the organic EL 13 is turned off when the fluorescent lamps 11 and 12 are turned on by the control by the lighting circuit 14. At this time, the light emitted from the fluorescent lamps 11 and 12 can pass through the organic EL 13. The organic EL 13 is configured by a member that becomes transparent when turned off.

  According to the present embodiment, since the organic EL 13 is separated from the lighting circuit 14 in the horizontal direction, the load applied to the lighting circuit 14 due to the heat generated by the organic EL 13 can be reduced.

  In addition, since the organic EL 13 is separated from the fluorescent lamps 11 and 12 in the height direction, it is possible to suppress a decrease in the light emission efficiency of the organic EL 13 due to heat generated by the fluorescent lamps 11 and 12.

  Moreover, the organic EL 13 has an appearance similar to the shade of an existing lighting fixture, so that the lighting fixture 1 has an appearance that is not significantly different from existing lighting fixtures that are widely spread. As a result, the user does not feel uncomfortable.

  The present invention is not limited to the above embodiment, and various modifications can be made within the scope of the claims.

  For example, the organic EL 13 may be composed of a plurality of panels so that light effects can be achieved, and the lighting circuit 14 may perform dimming for each panel.

  Moreover, the organic EL 13 may be configured by a member that is translucent when turned off. By doing in this way, organic EL13 comes to function as a shade with respect to the illumination of the fluorescent lamps 11 and 12.

  Further, the shapes of the fluorescent lamp and the organic EL are not limited to the shapes shown in the above-described embodiments.

  For example, the fluorescent lamp may be constituted by a straight tube type arc tube, and the organic EL may be formed in a disk shape. When the organic EL is formed in a disk shape, the lighting circuit is separated from the organic EL in the height direction. By doing in this way, the burden added to the lighting circuit 14 with the heat | fever which organic EL emits can be restrained small. Moreover, when forming organic EL in disk shape, organic EL is comprised by the member which becomes transparent at the time of light extinction, for example. By doing so, the light emitted from the fluorescent lamp passes through the organic EL, so even if the organic EL covers the entire area directly under the fluorescent lamp, the light from the fluorescent lamp can occupy the interior space. Can be illuminated.

  Moreover, the lighting fixture of this invention may be comprised as a bracket illuminating device provided with the bracket base for fixing to a wall, and the fluorescent lamp attached to this bracket base. In this case, the bracket base is constituted by an organic EL, and the lighting of the fluorescent lamp and the organic EL can be switched by an on / off operation of the switch.

  Other suitable modifications of the present invention include the following configurations.

  With respect to the lighting apparatus according to the aspect of the present invention, preferably, the fluorescent lamp and the organic EL are arranged in a ring shape so that their centers coincide with each other, and the lighting circuit is arranged at the ring center of the organic EL. And being separated from the organic EL in a horizontal direction.

  Preferably, the lighting circuit can dimm the fluorescent lamp and the organic EL, and illumination brighter than a predetermined illuminance is obtained by the lighting circuit dimming the fluorescent lamp, Illumination darker than a predetermined illuminance is obtained by the lighting circuit dimming the organic EL.

  Preferably, the organic EL is composed of a plurality of panels, and the lighting circuit performs dimming for each panel.

  Preferably, the organic EL is composed of a member that becomes transparent when extinguished.

  Alternatively, the organic EL is made of a material that becomes translucent when turned off.

DESCRIPTION OF SYMBOLS 1 Lighting fixture 10 Sheet metal 11,12 Fluorescent lamp 13 Organic EL
14 Lighting circuit

Claims (6)

A fluorescent lamp,
Organic EL separated from the fluorescent lamp in the height direction by being disposed below the fluorescent lamp;
A lighting circuit provided for lighting the fluorescent lamp and the organic EL, and disposed separately from the organic EL;
A lighting apparatus comprising: the fluorescent lamp, the organic EL, and a sheet metal to which the lighting circuit is fixed. The fluorescent lamp and the organic EL are arranged in a circular shape with their centers aligned with each other,
The lighting apparatus according to claim 1, wherein the lighting circuit is disposed at a ring center of the organic EL and is spaced apart from the organic EL in a horizontal direction. The lighting circuit can perform dimming of the fluorescent lamp and the organic EL,
Illumination brighter than a predetermined illuminance is obtained by the lighting circuit dimming the fluorescent lamp, and illumination darker than the predetermined illuminance is obtained by the lighting circuit dimming the organic EL. The lighting fixture according to claim 1, wherein the lighting fixture is provided. The organic EL is composed of a plurality of panels,
The lighting device according to claim 1, wherein the lighting circuit performs dimming for each panel.   The lighting apparatus according to claim 1, wherein the organic EL is configured by a member that is transparent when the light is extinguished.   The lighting apparatus according to any one of claims 1 to 4, wherein the organic EL is made of a material that is translucent when turned off.

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