JP2018085193A - Light fitting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light fitting which inhibits people from feeling discomfort glare while securing sufficient luminous intensity.SOLUTION: A light fitting 1 includes: a planar luminous body 2 which is provided at a position separated from a support surface 100 and emits direct light L1 in a direction away from the support surface; an LED luminous body 3 provided on a surface 21 of the planar luminous body 2 which is opposite to a light emission surface 20; and a reflection surface 100 which reflects light emitted from the LED luminous body 3. The light emitted from the LED luminous body 3 is reflected by a reflection surface to be radiated as indirect light L2.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a lighting fixture.

  Conventionally, an illuminating device having a main light source and a sub light source has been disclosed (see, for example, Patent Document 1). The illuminating device described in Patent Document 1 includes a main light source, a plurality of support shafts that extend radially around the main light source, an annular sub-light source that is supported at the ends of the plurality of support shafts, It is configured with. For the main light source and the sub light source, light emitting elements such as LEDs are used as the light sources.

JP2014-112556A

  However, in the conventional illumination device described in Patent Document 1, the light emitted from the main light source and the sub-light source is direct light and indirect light by a light emitting element such as an LED. There is a concern that people in the space where the lighting device is installed may feel unpleasant glare.

  The objective of this invention is providing the lighting fixture which aimed at suppression which makes unpleasant dazzle feel, ensuring sufficient illumination intensity.

In order to solve the above object, the present invention comprises the following arrangement.
That is, the present invention is provided on a surface light emitter that is provided at a position separated from the support surface and directly emits light in a direction away from the support surface, and on a surface opposite to the light emission surface in the surface light emitter. And a reflective surface that reflects the light emitted from the LED light emitter, and the light emitted from the LED light emitter is reflected by the reflective surface and irradiated as indirect light. It is a lighting fixture.

  According to the present invention as described above, the light emitted from the surface light emitter is irradiated as direct light, and the light emitted from the LED light emitter is irradiated as indirect light reflected by the reflecting surface. For this reason, the soft light which suppressed the glare is irradiated by the surface light-emitting body. Here, the light emitted from the surface light emitter may not have sufficient illuminance, but by providing the LED light emitter, indirect light is irradiated by the LED light emitter, and sufficient illuminance is achieved. Can be secured. That is, it is possible to suppress unpleasant glare while ensuring sufficient illuminance.

  Moreover, in the lighting fixture of this invention, a support surface can be functioned as a reflective surface. According to this, the surface light emitter is exposed and provided without being covered with an umbrella or the like, and the thinness is emphasized so that it is difficult to feel a sense of pressure.

  Moreover, in the lighting fixture of this invention, it is preferable that the surface light emitter has an organic EL element. According to this, compared with the case where a surface light emitter is comprised with the light-guide plate which guides the light radiated | emitted by LED element and LED element, the thickness of a lighting fixture can be made thin.

  According to the lighting fixture of the present invention, it is possible to suppress unpleasant glare while securing sufficient illuminance.

It is a perspective view which shows the lighting fixture which concerns on one embodiment of this invention. It is a side view of the lighting fixture shown by FIG. It is a side view which shows the use condition of the lighting fixture shown by FIG. It is a side view which shows the modification of the lighting fixture shown in FIG. It is a side view which shows the other modification of the lighting fixture shown in FIG.

  Hereinafter, the lighting fixture which concerns on one embodiment of this invention is demonstrated with reference to FIGS. 1-3. FIG. 1 is a perspective view showing a lighting fixture 1 according to an embodiment of the present invention. FIG. 2 is a side view of the lighting fixture 1. FIG. 3 is a side view showing a use state of the lighting fixture 1.

  The lighting fixture 1 of this embodiment is used in a room having a ceiling surface 100, for example, and is provided at a position separated from the ceiling surface 100 (support surface) as shown in FIGS. The surface light emitter 2 that directly emits the light L1 in the direction away from the ceiling surface 100, and the LED light emitter 3 provided on the upper surface 21 of the surface light emitter 2 opposite to the light emitting surface 20 (shown in FIG. 2). And). In the present embodiment, the light emitted from the LED light emitter 3 is reflected by the ceiling surface 100 (reflection surface) and irradiated as indirect light L2. In the present embodiment, the surface direction of the surface light emitter 2 is referred to as an XY direction, the direction is orthogonal to the XY direction, and the direction in which the upper surface 21 of the surface light emitter 2 and the ceiling surface 100 face each other is referred to as a Z direction. I write.

  The surface light emitter 2 has an organic EL (Organic Electroluminescence) element (not shown) as a light emitting element. The organic EL element is configured by sandwiching an organic layer between a first electrode and a second electrode. In this embodiment, the surface light emitter 2 uses an organic EL element as a light emitting element, and is formed in a panel shape having a rectangular shape in plan view and a substantially uniform thickness. The surface light emitter 2 includes a top surface 21 and a bottom surface 20 (light emission surface) that are provided in a planar shape and face each other, and a peripheral surface 22 that is continuous with the top surface 21 and the bottom surface 20. Yes. Further, the surface light emitter 2 is supported by being separated from the upper surface 21 so that the upper surface 21 faces the ceiling surface 100, and the lower surface 20 emits light L1 directly in a direction away from the ceiling surface 100. It functions as the surface 20. In the present embodiment, “a direction away from the ceiling surface 100 (support surface)” means both a downward direction and a diagonally downward direction. Such a surface light emitter 2 emits the direct light L1 downward and obliquely downward.

  As shown in FIGS. 1 and 3, the surface light emitter 2 is supported by a power line W for supplying power to the surface light emitter 2 and the LED light emitter 3. The power supply line W is provided in a long shape, and one end thereof is fixed to the ceiling surface 100 and the other end is fixed to the central portion of the upper surface 21 of the surface light emitter 2. Thus, the surface light emitter 2 is provided at a position separated from the ceiling surface 100 by a predetermined dimension. Here, the “predetermined dimension” is a dimension that can secure sufficient illuminance when the light emitted from the LED element 31 is reflected by the ceiling surface 100.

  The LED light emitter 3 includes an LED substrate 30 and an LED element 31 (light emitting diode) as a light emitting element mounted on the LED substrate 30. The LED light emitter 3 is provided so that the LED element 31 is positioned at the center of the upper surface 21 of the surface light emitter 2. In the LED light emitter 3, the LED substrate 30 is fixed to the upper surface 21 of the surface light emitter 2, and the LED element 31 is mounted on the side away from the upper surface 21 of the surface light emitter 2 with the LED substrate 30 interposed therebetween. . The light emitted from the LED light emitter 3 is reflected by the ceiling surface 100 and irradiated as indirect light L2.

  According to the present embodiment as described above, as shown in FIG. 3, the light emitted from the surface light emitter 2 is directly irradiated as the light L1, and the light emitted from the LED light emitter 3 is reflected by the reflecting surface. Irradiated as indirect light L2. For this reason, the surface light emitter 2 emits soft light (direct light L1) with reduced glare. Here, the light emitted from the surface light emitter 2 (direct light L1) may not have sufficient illuminance. However, since the LED light emitter 3 is provided, the indirect light L2 is generated by the LED light emitter 3. It will be irradiated, and sufficient illuminance can be secured. That is, it is possible to suppress unpleasant glare while ensuring sufficient illuminance.

  Moreover, in the lighting fixture 1 of this embodiment, the ceiling surface 100 (support surface) can be functioned as a reflective surface. According to this, the surface light emitter 2 is exposed and provided without being covered with an umbrella or the like, and the thinness is emphasized so that it is difficult to feel a sense of pressure.

  Moreover, in the lighting fixture 1 of this embodiment, it is preferable that the surface light emitter 2 has an organic EL element. According to this, for example, the thickness of the lighting fixture can be reduced as compared with the case where the surface light emitter 2 is configured by the LED element 31 and the light guide plate that guides the light emitted by the LED element 31.

  In addition, the Example demonstrated above only showed the typical form of this invention, and this invention is not limited to this Example. That is, various modifications can be made without departing from the scope of the present invention. Of course, such modifications are included in the scope of the present invention as long as the configuration of the lighting apparatus of the present invention is provided.

  In the present embodiment, the luminaire 1 is used as room lighting, but as room lighting, for example, it may be used as pendant lighting to illuminate a dining table, such as a moving body such as a train, a bus, or a private car. It may be used to illuminate the passenger compartment. Or it can also be used for illumination of a display case for displaying articles such as merchandise and illumination of a display shelf or case for displaying articles such as food.

  Moreover, in the said embodiment, although the lighting fixture 1 was provided in the position spaced apart from the ceiling surface 100 as a support surface, this invention is not limited to this. As illustrated in FIG. 4, the luminaire 10 may be provided at a position separated from the side wall surface 101 as a support surface. In that case, the luminaire 10 may be configured so that the side wall surface 101 functions as a reflecting surface, with the side wall surface 101 being supported so as to face the upper surface 21 of the surface light emitter 2. In FIG. 4, the surface direction of the surface light emitter 2 is denoted as the ZY direction, the direction orthogonal to the ZY direction, and the direction in which the upper surface 21 of the surface light emitter 2 and the side wall surface 101 face each other is denoted as the X direction. . In FIG. 4, members having substantially the same function or substantially the same configuration as those of the above-described embodiment are denoted by the same reference numerals and description thereof is omitted.

  Moreover, in this embodiment, although the lighting fixtures 1 and 10 are used as a lighting fixture fixed to the ceiling surface 100 or the side wall surface 101, this invention is not limited to this. As illustrated in FIG. 5, the lighting fixture 11 may include an umbrella 12 as a reflecting surface and be configured to be movable.

  In the present embodiment, the surface light emitter 2 includes an organic EL element, but the present invention is not limited to this. The surface light emitter may be composed of an LED element and a light guide plate that guides light emitted from the LED element, or other various surface light emitters. Further, the surface light emitter may be composed of a laser diode (LD) or may be composed of an optical fiber.

  In the present embodiment, only one LED light emitter 3 is provided at the center of the upper surface 21 of the surface light emitter 2, but the present invention is not limited to this. A plurality of LED light emitters 3 may be provided, and the plurality of LED light emitters 3 may be provided side by side at the end of the upper surface 21 of the surface light emitter 2. Further, the surface light emitter 2 may not be rectangular. That is, the surface light emitter 2 may have a triangular shape or a polygonal shape that is a pentagon or more. The surface light emitter 2 may be circular or elliptical.

  Each embodiment mentioned above only showed the preferred form of the present invention, and the present invention is not limited to these embodiments. That is, those skilled in the art can implement various modifications according to conventionally known knowledge without departing from the scope of the present invention. Of course, such modifications are included in the scope of the present invention as long as they have the configuration of the lighting apparatus of the present invention.

1, 10, 11 Lighting fixture 2 Surface light emitter 3 LED light emitter 20 Lower surface (light emitting surface)
21 Upper surface (surface opposite to the light emitting surface)
100 Ceiling surface (support surface, reflective surface)
L1 Direct light L2 Indirect light

Claims (3)

A surface light emitter that is provided at a position away from the support surface and emits light directly in a direction away from the support surface;
An LED light emitter provided on a surface opposite to the light emitting surface in the surface light emitter;
A reflective surface that reflects the light emitted by the LED emitter,
The luminaire characterized in that light emitted from the LED illuminator is reflected by the reflecting surface and irradiated as indirect light.   The lighting apparatus according to claim 1, wherein the support surface functions as the reflecting surface.   The lighting apparatus according to claim 1, wherein the surface light emitter includes an organic EL element.

Images