JP2010192388A - Luminaire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a luminaire using an LED as a light source and radiating light in a plurality of directions other than an LED radiating direction to adjust distributed light. <P>SOLUTION: A half reflection member 24 for transmitting part of incident light and reflecting other light toward another radiation opening 22 is provided in one radiation opening 21 of the pair of radiation openings 21, 22 and an LED light source part 30 is directed toward one radiation opening 21. Owing to the above, part of light radiated from the LED light source part 30 in one direction transmits through the half reflection member 24 and is radiated from one radiation opening 21 and light reflected from the half reflection member 24 is radiated from another radiation opening 22, by which light is radiated in the plurality of directions other than the radiating direction of the LED 32. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a luminaire suitable for use with an LED as a light source and being attached to a wall surface.

  Conventional lighting fixtures for wall mounting that use incandescent or fluorescent lamps as light sources have the property that the light source itself diffuses light in all directions, so even if only one light source is used, the walls and floor It is possible to easily irradiate the ceiling surface or the like (see, for example, Patent Document 1).

  As shown in FIG. 3, in the illumination device 100 described in Patent Document 1, an apparatus main body 103 having an upper light irradiation port 101 that opens upward and a lower light irradiation port 102 that opens downward is provided. It is attached at a position (for example, a wall surface) away from the ceiling surface. Inside the apparatus main body 103, a fluorescent lamp 104, which is a light source for irradiating light toward the upper light irradiation port 101 and the lower light irradiation port 102, is provided.

  An opening / closing lid 105 is detachably provided at the lower light irradiation port 102. The opening / closing lid 105 is provided with a plurality of sliding doors 108 slidably formed by attaching a face material 107 that partially transmits light to a lattice-like frame 106.

  Thus, the upper side (ceiling side) is illuminated through the upper light irradiation port 101 and the lower side (floor side) is illuminated through the lower light irradiation port 102. At this time, the lower illumination can easily adjust the light distribution by adjusting the amount and position of the light irradiated downward by opening and closing the sliding door 108.

Japanese Patent Laying-Open No. 2003-217335 (FIG. 3)

  By the way, in recent years, from the viewpoint of energy saving, an LED that uses low power consumption as a light source of a lighting fixture has been increasing. In addition, various light distributions have been required for lighting fixtures. The same applies to lighting fixtures for wall mounting.

  However, when an LED is used as the light source, the irradiation light is emitted only on one side and with strong directivity due to the configuration in which the LED element as the light source is mounted on the substrate and the nature of the LED. The surface is limited. For this reason, for example, when it is intended to irradiate light up and down, it is necessary to provide the LED substrate in the vertical direction, and it is necessary to provide a plurality of LED substrates, resulting in an increase in cost.

  The present invention has been made to solve the conventional problems, and provides a lighting apparatus that uses an LED as a light source and can adjust light distribution by irradiating light in a plurality of directions other than the irradiation direction of the LED. The purpose is to do.

  The illuminating device of the present invention is a device body having a first irradiation opening and a second irradiation opening that are parallel to each other, and an LED that irradiates one of the first irradiation opening and the second irradiation opening. A light source and a semi-reflective member that is provided in the one irradiation opening and transmits a part of the incident light and reflects the other, and reflects the light reflected by the semi-reflective member toward the other irradiation opening. And a reflecting surface.

  With this configuration, a semi-reflective member that transmits a part of incident light to one of a pair of irradiation openings and reflects other light toward the other irradiation opening is provided, and the LED light source unit is irradiated with one of the irradiation light sources. Turn to the opening. Thereby, a part of the light irradiated in one direction from the LED light source part is transmitted through the semi-reflective member and irradiated from one irradiation opening, and the light reflected by the semi-reflective member is irradiated from the other irradiation opening. Therefore, it is possible to irradiate light in a plurality of directions other than the irradiation direction of the LED.

  Moreover, the lighting fixture of this invention has the structure which formed the unevenness | corrugation which reflects the light which injected into this inner surface in the said reflective surface direction in the inner surface of the said semi-reflective member.

  With this configuration, the light applied to the semi-reflective member is diffusely reflected by the unevenness provided on the inner surface of the semi-reflective member and is widely irradiated to the other irradiation opening side. Or light can be irradiated to the intended direction by combining the angle of the uneven surface of a semi-reflective member, and the irradiation angle from an LED light source part. Therefore, the light distribution can be easily adjusted by changing the setting of the semi-reflective member.

  In the present invention, a semi-reflective member that transmits a part of incident light to one of a pair of irradiation openings and reflects other light toward the other irradiation opening is provided, and the LED light source unit is irradiated with one of the irradiation light sources. Turn to the opening. Thereby, a part of the light irradiated in one direction from the LED light source part is transmitted through the semi-reflective member and irradiated from one irradiation opening, and the light reflected by the semi-reflective member is irradiated from the other irradiation opening. Therefore, light can be irradiated in a plurality of directions other than the irradiation direction of the LED.

Sectional drawing which shows the lighting fixture concerning embodiment of this invention (A) is a cross-sectional view taken along the line II-II in FIG. 1, (B) is a top view seen from the B direction in (A), (C) is a bottom view seen from the C direction in (A), (D) (A) Side view seen from direction D Sectional drawing showing a conventional lighting fixture

Hereinafter, the lighting fixture of embodiment of this invention is demonstrated using drawing.
1 is a cross-sectional view showing a lighting apparatus according to an embodiment of the present invention, FIG. 2 (A) is a cross-sectional view at the position II-II in FIG. 1, (B) is a top view as viewed from the B direction in (A), (C) is a bottom view seen from the C direction in (A), and (D) is a side view seen from the D direction in (A).

  As shown in FIGS. 1 and 2, a lighting fixture 10 according to an embodiment of the present invention is attached to a wall surface 11 to illuminate a floor surface 12 side and a ceiling surface 13 side, for example, to provide an illumination space such as a room. Can be used for indirect illumination.

  The luminaire 10 is, for example, a rectangular plate composed of a wall side plate 23 on the wall surface that is a mounting surface, a front side plate 25 that faces the wall side plate 23, and side plates 26 and 26 that connect the wall side plate 23 and the front side plate 25. A cylindrical instrument body 20 is provided. The instrument body 20 has a lower irradiation opening 21 that is a first irradiation opening and an upper irradiation opening 22 that is a second irradiation opening that are parallel to each other. The lower irradiation opening 21 faces the floor surface 12, and the upper irradiation opening 22 faces the ceiling surface 13.

  An LED light source unit 30 that irradiates light toward the lower irradiation opening 21 that is one irradiation opening is provided on the inner side surface of the wall side plate 23 of the instrument main body 20. The LED light source unit 30 includes a substrate 31 attached to the wall side plate 23 and an LED 32 that is a light source attached to the lower surface of the substrate 31. Although the substrate 31 can be directly attached to the wall side plate 23, an attachment plate (not shown) can be attached to the wall side plate 23, and the substrate 31 can be attached to the attachment plate.

  The substrate 31 has a long rectangular shape along the longitudinal direction of the instrument body 20, and a plurality of (here, three) LEDs 32 are provided along the longitudinal direction of the substrate 31 (FIGS. 2A to 2C). See C)). Here, the front side of the substrate 31 is inclined and attached to the wall side plate 23 so that the irradiation light from the LED 32 is inclined forward.

  A semi-reflective member 24 that transmits a part of incident light and reflects the other is attached to the lower irradiation opening 21 that is one irradiation opening. A large number of irregularities 241 are provided on the inner surface 242 that is the surface of the semi-reflective member 24 on the LED light source unit 30 side. The unevenness 241 is formed in a shape that mainly reflects the irradiation light from the LED 32 to the front side plate 25. For example, the angle θ formed by the incident light and the reflected light is small on the side close to the wall side plate 23, and θ can be formed so as to increase toward the front side plate 25.

Thereby, the light reflected by the surface of the unevenness 241 of the semi-reflective member 24 is mainly irradiated in the direction of the front side plate 25 of the instrument body 20, and the light transmitted through the semi-reflective member 24 transmits the unevenness 241. Thus, the light is irradiated from the lower irradiation opening 21 in the direction of diffusion, for example.
The semi-reflective member 24 can be formed by forming irregularities 241 with an appropriate shape on the inner surface 242 of transparent resin or glass, and depositing metal on the surface of the irregularities 241.

  The inner surface 251 of the front plate 25 is a reflecting surface that reflects light, and reflects the reflected light incident from the semi-reflective member 24 toward the upper irradiation opening 22 that is the other irradiation opening. Therefore, by combining the angle of the unevenness 241 of the semi-reflective member 24 and the irradiation angle from the LED light source unit 30, light can be irradiated from the upper irradiation opening 22 in the intended direction. Moreover, the light distribution of the light irradiated downward from the lower irradiation opening 21 can be adjusted.

  With this configuration, a part of the incident light is transmitted through the lower irradiation opening 21 that is one of the pair of irradiation openings 21 and 22, and the other irradiation opening is the upper irradiation opening that is the other irradiation opening. A semi-reflective member 24 that reflects toward 22 is provided, and the LED light source unit 30 is directed toward the lower irradiation opening 21. Thereby, a part of the light irradiated in one direction from the LED light source unit 30 is transmitted through the semi-reflective member 24 and irradiated downward from the lower irradiation opening 21, and the light reflected by the semi-reflective member 24 is upper side. Since it can irradiate from the irradiation opening 22, it can irradiate light also in multiple directions other than the irradiation direction of LED32.

Moreover, since the unevenness 241 that reflects the incident light toward the inner surface 251 of the front side plate 25 is formed on the inner surface 242 of the semi-reflective member 24, the light irradiated on the semi-reflective member 24 is irregularly reflected by the unevenness 241. The light is reflected by the inner surface 251 of the front side plate 25 and is widely irradiated to the upper irradiation opening 22 side.
Therefore, the light distribution can be easily changed by appropriately changing the shape and position of the unevenness 241.

In addition, the lighting fixture of this invention is not limited to embodiment mentioned above, A suitable deformation | transformation, improvement, etc. are possible.
For example, in the above-described embodiment, the inner surface 251 of the front side plate 25 of the instrument body 20 is a reflection surface, but a reflection plate as a separate member may be provided.
Moreover, it is also possible to illuminate by irradiating light forward from the front side plate 25 by configuring the front side plate 25 of the instrument body 20 with a semi-reflective member.

DESCRIPTION OF SYMBOLS 10 Lighting fixture 20 Appliance main body 21 Lower side irradiation opening (1st irradiation opening, one irradiation opening)
22 Upper irradiation opening (second irradiation opening, one irradiation opening)
24 semi-reflective member 241 unevenness 242 inner surface 251 inner surface (reflection surface)
30 LED light source

Claims (2)

An instrument body having a first irradiation opening and a second irradiation opening parallel to each other;
An LED light source unit that emits light toward one of the first irradiation opening and the second irradiation opening;
A semi-reflective member that is provided in the one irradiation opening and transmits a part of the incident light and reflects the other;
A reflective surface that reflects the light reflected by the semi-reflective member toward the other irradiation opening;
A lighting fixture comprising:   The illuminating device according to claim 1, wherein the inner surface of the semi-reflective member is formed with unevenness that reflects light incident on the inner surface toward the reflecting surface.

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