JP2013161624A - Led lighting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an LED lighting device that can prevent a particle of an LED light source from emerging out or the like and improve fixture efficiency to illuminate a room indirectly.SOLUTION: An LED light source 22 fitted on a fixture body 20 to be installed on a ceiling 12 of a room 11 irradiates light on an opposite direction to a central side of the room 11. Then, a translucent concave spherical-shaped reflection member 23 is arranged at a position opposing the LED light source 22 in the fixture body 20 and a translucent cover 25 for housing the LED light source 22 and the reflection member 23 are provided. Thereby, light irradiated from the LED light source 22 to the opposite side to the central side in the room is reflected by the reflection member 23 and then is irradiated to the central side of the room through the cover 25. As a result, it is not necessary for the cover 25 to demand much of light diffusion effect and fixture efficiency can be improved and moreover occurrence of a particle emerging out or the like of the LED light source 22 on the cover 25 can be prevented, and the room 11 can be illuminated indirectly.

Description

  The present invention relates to an LED lighting device that is attached to a corner of a ceiling surface of an indoor room and indirectly illuminates the room.

DESCRIPTION OF RELATED ART Conventionally, the LED lighting apparatus which attaches to a wall surface in a room and illuminates the room by indirect illumination is known (for example, refer patent document 1).
As shown in FIG. 5, the LED lighting device 100 described in Patent Document 1 is attached to a wall surface 101 and illuminates the floor surface 102 side and the ceiling surface 103 side to indirectly illuminate an illumination space such as a room.
The LED lighting device 100 has a rectangular cylindrical instrument body 104 and has a lower irradiation opening 105 facing the floor surface 102 and an upper irradiation opening 106 facing the ceiling surface 103.
An LED light source unit 107 that irradiates light toward the lower irradiation opening 105 is provided inside the instrument main body 104, and has an LED 109 on the lower surface of the substrate 108.
A semi-reflective member 111 that transmits part of incident light and reflects others is attached to the lower irradiation opening 105.

  Thereby, the light reflected by the semi-reflective member 111 is mainly irradiated in the direction of the front side plate 112 of the instrument main body 104, and the light transmitted through the semi-reflective member 111 is irradiated downward from the lower irradiation opening 105. The

JP 2010-192388 A (FIG. 1)

However, since the LED illumination device described in Patent Document 1 described above is attached to a wall surface, it is suitable for indirect illumination near the wall surface, but is not suitable for illumination of the entire room.
Also, in general, in an LED lighting device that indirectly illuminates, in order to prevent LED light source glare and LED light source particles from appearing on a cover that covers the LED light source and causing local concentration of the light amount, etc. The member which has a light-diffusion function is provided in the vicinity.
For this reason, there has been a problem that the loss (attenuation) of light is large and the efficiency of the apparatus is lowered.

  The present invention has been made to solve the conventional problems, and an object of the present invention is to provide an LED lighting device that can indirectly illuminate a room by preventing the LED light source particles from being raised and improving the efficiency of the appliance. .

  The LED lighting device of the present invention includes an appliance main body attached to an indoor ceiling surface, an LED light source attached to the appliance main body and irradiating light in a direction opposite to the center side of the indoor, and the appliance main body. A concave spherical reflector having translucency provided at a position facing the LED light source, and a translucent cover for accommodating the LED light source and the reflector.

  Moreover, the LED lighting device of the present invention has a space between the reflecting material and the cover.

  In the LED lighting device of the present invention, the cover has a shape corresponding to a corner of the room.

  Furthermore, in the LED illumination device of the present invention, the LED light source is inclined with respect to the ceiling surface.

  In the present invention, the light emitted from the LED light source to the side opposite to the center side of the room is reflected by the reflecting material and then irradiated to the center side of the room through the cover. There is no need to obtain the LED lighting device, which improves the efficiency of the apparatus and prevents the LED light source from being raised on the cover, and can indirectly illuminate the room.

The side view of the room which attached the LED lighting apparatus of embodiment which concerns on this invention to the ceiling surface The bottom view which looked at the ceiling surface which attached the LED lighting apparatus of embodiment which concerns on this invention from the downward direction (A) is sectional drawing of an LED illuminating device, (B) is sectional drawing of the BB position in (A). Explanatory drawing of light distribution state of LED lighting device Cross-sectional view of a room with a conventional LED lighting device for indirect lighting attached to the wall

Hereinafter, an LED lighting device according to an embodiment of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, the LED lighting device 10 according to the embodiment of the present invention is used to illuminate the central side of the room 11 by being attached to the corner 12 </ b> A of the ceiling surface 12 of the room 11.
In addition, in FIG. 2, although the example which has arrange | positioned the LED illuminating device 10 in all the corner parts 12A of the four corners of the ceiling surface 12 is shown, a number and arrangement | positioning are not limited to this.

As shown in FIGS. 3A and 3B, the LED lighting device 10 has a fixture body 20 attached to the ceiling surface 12.
The instrument body 20 is a fan-shaped plate-like member having a central angle θ2 corresponding to the intersection angle θ1 (see FIG. 2) of the two wall surfaces 13 and 14 where the room 11 intersects, for example. Here, since the two wall surfaces 13 and 14 are orthogonal to each other, a case where θ1 = θ2 = 90 degrees will be described.
The intersection of the two wall surfaces 13 and 14 is indicated by a center point CP.

A concentric heat sink 21 having a trapezoidal cross section and centering on the center point CP is attached to the lower surface 20A of the instrument body 20.
The side surface of the center point CP of the heat sink 21 is inclined downward (inclined surface 21A), and a plurality of LED light sources 22 are attached to the inclined surface 21A at predetermined intervals.
Therefore, the light emitted from the LED light source 22 is emitted toward the side opposite to the center side of the room 11, that is, toward the lower side of the corner 12 </ b> A.

A translucent reflector 23 having a concave spherical shape with a J-shaped cross section is attached to the front surface (that is, the center point CP side) of the LED light source 22 on the lower surface 20A of the instrument body 20. The reflective material 23 is curved so as to include the LED light source 22.
Here, as a material having translucency, in addition to a translucent resin, glass, a half mirror, etc., a part of light is allowed to pass through, such as a perforated plate, a lattice-like or ladder-like member, and the like. A member that reflects light.
In addition, the reflective material 23 is provided inside the end part of the instrument main body 20, and a space 26 is provided between the cover 25 described later.

In the vicinity of the heat sink 21 on the lower surface 20 </ b> A of the appliance body 20, a lighting power supply device 24 that receives power from a commercial power source wired on the ceiling 12 </ b> B and supplies lighting power to the LED light source 22 is attached. Yes.
In addition, the instrument main body 20 is provided with a cover 25 that accommodates the LED light source 22 and the reflective material 23 and has high translucency.

Therefore, as shown in FIG. 4, the light LB <b> 1 irradiated from the LED light source 22 toward the ceiling surface 12 is reflected by the reflecting material 23, travels downward, passes through the cover 25, and is irradiated downward.
Further, most of the light LB2 irradiated from the LED light source 22 to the wall surfaces 13 and 14 is reflected by the reflecting material 23, directed downward in the center direction of the room 11, and transmitted through the cover 25 (LB3). . A part of the light passes through the reflecting material 23 and becomes weak light, which is irradiated to the wall surfaces 13 and 14 (LB4).
Further, the light LB5 irradiated downward from the LED light source 22 is directly transmitted through the cover 25 and irradiated downward (LB5).

As described above, according to the LED lighting device 10 of the embodiment according to the present invention described above, the LED light source 22 attached to the fixture body 20 attached to the ceiling surface 12 of the room 11 is on the side opposite to the center side of the room 11. Irradiate light in the direction.
Then, a concave spherical reflective material 23 having translucency is provided at a position facing the LED light source 22 in the instrument body 20, and a translucent cover 25 that accommodates the LED light source 22 and the reflective material 23 is provided. .

For this reason, the light irradiated from the LED light source 22 to the side opposite to the center side of the room 11 is reflected by the reflecting material 23 and then irradiated to the center side of the room 11 through the cover 25. Accordingly, it is not necessary to obtain a large light diffusion effect in the cover 25, and the efficiency of the appliance is improved. In addition, the interior of the room 11 can be indirectly illuminated by preventing the cover 25 from causing the LED light source 22 to be raised.
Moreover, since the reflective material 23 has translucency, when it is installed in the corner 12A of the ceiling surface 12, it can irradiate the leaked light to the area 12C (see FIGS. 1 and 2) that becomes a blind spot, and the corner 12A. Can be felt dark.

  Moreover, according to the LED lighting device 10 of the embodiment according to the present invention, since the space 26 is provided between the reflecting material 23 and the cover 25, the light transmitted through the reflecting material 23 having translucency is directly applied to the cover 25. It is possible to prevent the LED light source 22 from being raised on the cover 25 by preventing the incident light.

  Further, according to the LED lighting device 10 of the embodiment according to the present invention, the cover 25 has a shape corresponding to the corner portion 12A of the room 11, so that it can be attached to the corner portion 12A of the ceiling surface 12, and interior lighting. The design of the design can be developed.

  Furthermore, according to the LED lighting device 10 of the embodiment according to the present invention, the LED light source 22 is inclined with respect to the ceiling surface 12, so that the light is directed downward from the corner line where the wall surfaces 13 and 14 intersect. Can be irradiated.

  Note that the LED lighting device 10 of the present invention is not limited to the above-described embodiment, and appropriate modifications and improvements can be made.

DESCRIPTION OF SYMBOLS 10 LED illuminating device 11 Room 12 Ceiling surface 12A Corner part 20 Instrument body 22 LED light source 23 Reflector 25 Cover 26 Space

Claims (4)

An appliance body attached to the ceiling surface of the room;
An LED light source attached to the instrument body and irradiating light in a direction opposite to the center side of the room;
A concave spherical reflective material having translucency provided at a position facing the LED light source in the instrument body;
An LED illumination device comprising: a light-transmitting cover that houses the LED light source and the reflective material. The LED lighting device according to claim 1,
An LED lighting device having a space between the reflecting material and the cover. The LED lighting device according to claim 1 or 2,
The LED lighting device, wherein the cover has a shape corresponding to a corner of the room. In the LED lighting device according to any one of claims 1 to 3,
The LED lighting device in which the LED light source is inclined with respect to the ceiling surface.

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