JPH0364807A - Indirect liminaire - Google Patents

Abstract

PURPOSE:To eliminate the unevenness of the luminance on a ceiling and make a good appearance by providing a reflecting plate for reflecting the light from light sources to the upper outside between multiple slender light sources separated from each other, and interposing shading materials for shading a part of the direct light from the light source. CONSTITUTION:The light of light sources 3 is directly projected to the outside through projecting openings 2, and while it is reflected by a reflecting plate 4 to be similarly projected to the outside through the projecting openings 2. Shading materials 5 are positioned between lines 111, 112 and 121, 122 drawn from a point P of a ceiling 6 facing to the center of multiple light sources 3 to both outer surfaces of each light source 3 for contact, and they are interposed between the ceiling 6 and the each light source 3. Consequently, a part of the direct light heading toward the point P of the ceiling 6 is shaded by the shading material 5 to eliminate a remarkable rise of the luminance of the ceiling 6 near the point P in comparison with other part of the coiling 6. The whole surface of the ceiling is thereby irradiated evenly in outline, and the unevenness of the luminance of the ceiling 6 is restricted.

Description

Detailed Description of the Invention [Object of the Invention] (Industrial Application Field) The present invention relates to an indirect lighting fixture that reduces uneven brightness on a ceiling surface.

(Prior art) Indirect lighting equipment has a light emitting opening on the top surface, and inside the equipment body,
A device is known in which a plurality of elongated light sources are housed and the light from the light sources is projected directly above and to the upper side through the opening, thereby reflecting the light on the ceiling surface and providing indirect illumination. ing.

(Problem to be Solved by the Invention) In the above-mentioned fixture, since the distance between the light source and the ceiling surface is the shortest in the direction directly above the light source, the brightness of the ceiling surface facing in this direction is particularly high compared to other areas. Therefore, there is a problem that unevenness in brightness occurs, making it very unsightly.

The present invention aims to eliminate the above-mentioned drawbacks and to provide an indirect lighting fixture that eliminates uneven brightness on a ceiling surface and eliminates unsightly appearance.

[Structure of the Invention] (Means for Solving the Problems) The present invention includes a plurality of elongated light sources spaced apart from each other housed in a device main body having a light emitting opening on the top surface, and a plurality of elongated light sources spaced apart from each other.
A reflecting plate is provided facing each of these light sources to reflect the light from the light source to the outside of the upper part, and further, a reflecting plate is provided between each of the light sources and the ceiling surface facing the center between the light sources, and the direct light of each of the light sources is provided between each of the light sources. It is characterized by interposing a light shielding body that blocks light from a part of the light.

(Function) A light shielding body that blocks a part of the direct light from each of the light sources is interposed between the ceiling surface facing the central part between the pair of light sources and each of the above light sources, so that Since a part of the direct light from the light source is blocked, the brightness of the ceiling surface in this direction is reduced, and uneven brightness on the ceiling surface can be reduced.

(Example) Examples of the present invention will be described below with reference to FIGS. 1 to 3. Reference numeral 1 denotes a device main body having a light emitting opening 2 on its upper surface, and 3 a plurality of elongated light sources housed within the main body 1, which are spaced apart from each other.

Reference numeral 4 denotes a reflecting plate, which is provided between the light sources 3 and facing each of the light sources 3, so as to reflect the light from the light sources 3 in an upper outward direction. Reference numeral 5 denotes a light shielding body, which is interposed between each light source 3 and a ceiling surface 6 facing the center between the light sources 3, and is designed to block part of the direct light from the light source 3 directed toward the ceiling 6 surface. I have to.

Next, the above embodiment will be explained in more detail. This embodiment shows an example in which it is used for a system ceiling.

The device main body 1 has the above-mentioned slit-shaped openings 2 on both sides of the upper surface facing each light source 3. The reflecting plate 4 is provided symmetrically between the light sources 3, and the reflecting surface reflects the light from the light source 3 toward the upper outer side as shown by the arrow. In this embodiment, the light shield 5 includes the upper end of the reflector 4 and the instrument body 1 that supports this end.
It consists of both ends of the top plate. Furthermore, in this embodiment, a light emitting aperture 10 is also provided on the lower surface, and a looper 11 is provided in this aperture io. 12 is the ceiling board,
13 is a hanging bolt, 14 is a C channel suspended by this bolt 14, 15 is a T bar suspended by C channel 14, and the ceiling plate L2 is supported by this bar 15. A ceiling plate 12 is provided correspondingly to each appliance, each having a chevron shape and having end plates 16 at both ends. The device main body 1 is provided with an equipment plate such as a broadcasting speaker 17, an emergency light 18, etc. at the end. In this embodiment, the light shielding body 5 is constituted by the upper end portion of the reflecting plate 4. Further, although details are omitted, both ends of the instrument main body 1 pass through an end plate 16, and the protruding portion thereof is supported by the T-bar 15.

Next, the operation of the above embodiment will be explained. In use, each light source 3 is turned on. The light from the light source 3 is directly projected to the outside through the light projection aperture 2, and is also reflected by the reflection plate 4 and projected to the outside through the light projection aperture 2 as well. 1st
As shown in the figure, the light shielding body 5 has a straight line 111. 112 and 121. 122, and is interposed between each light source 3 and six ceiling surfaces facing the center portion between the light sources 3. Therefore, a part of the direct light from the light source 3 directed toward the point P on the ceiling 6 is blocked by the light shield 5, and as a result, the brightness of the ceiling 6 near the point P does not increase significantly compared to other areas.

Other surfaces other than the vicinity of the point P are also irradiated by the light directly directed toward the upper outer side from the light source 3 and the reflected light from the light source 3 directed toward the upper outer side by the reflector 4, and together with the action of the light shield 5, , the entire ceiling surface is illuminated in a substantially -like manner, and the ceiling 6
This suppresses unevenness in brightness depending on the surface.

In the above embodiment, the upper end of the reflector 4 also serves as the light shield 5, but as shown in FIG. 4, a light shield 25 may be provided separately from the reflector 6. In this figure, the same parts as those in the first embodiment are given the same reference numerals, and detailed explanations will be omitted. Furthermore, a light projection opening lO is provided on the lower surface of the instrument main body 1.
However, a light-shielding plate (not shown) may be provided to completely block light without providing the light projection opening 10.

[Effects of the Invention] As described in detail above, the present invention accommodates a plurality of elongated light sources spaced apart from each other in a device main body having a light-transmitting aperture on the top surface, and a plurality of elongated light sources that are spaced apart from each other and that face each other. A reflecting plate is provided to reflect the light from the light source to the outside of the upper part, and a portion of the direct light from each of the light sources is blocked between each of the light sources and the ceiling surface facing the center between the light sources. Since it uses a light shield, it reduces the luminous flux in the direction directly above the fixture, where the brightness is highest, and reduces the brightness of the ceiling surface in this direction, thereby suppressing uneven brightness on the ceiling surface. It is possible.

Figure 2 is a perspective view of the state in use, Figure 3 is a top view,
The fourth is an explanatory diagram of another embodiment.

1... Appliance body, 2... Light projection aperture, 3... Light source,
4. Reflector plate 5. Light shield.

Claims (1)

[Scope of Claims] A device main body having a light emitting opening on its upper surface; a plurality of elongated light sources provided spaced apart from each other and housed in the main body; , a reflector that reflects the light from the light source in an upper outward direction; and a reflector for direct light from the light source toward the ceiling surface interposed between each of the light sources and a ceiling surface facing the center between the light sources. An indirect lighting fixture characterized by comprising: a light shielding body that partially shields light;