JPH02144803A - Lighting device - Google Patents

Abstract

PURPOSE:To prevent lighting unevenness of the whole of an installation surface by providing a central reflector whose longitudinal section is approx. triangular, a side reflecting surface opposed to the upper reflecting surface of this central reflector and a side reflector which has a side reflecting surface opposed to a lower reflecting surface. CONSTITUTION:A part of the outgoing beam from a light source 12 is reflected on the upper reflecting surface of a central reflector 18 through an illuminating opening 13 of a lamp body 11 and the light reflected on this upper reflecting surface is illuminated toward a surface where a lamp body 11 is installed such as the surface of a ceiling to which the lamp body 11 is installed. A part of the outgoing beams from the light source 12 is reflected toward the lower reflecting surface of the central reflector 18 on the reflecting surface 23, 24 of a side reflector 19, and the light reflected on this lower reflecting surface is illuminated downward. Thereby, not only the lower direction of the lamp body 11, but also the surface, such as the ceiling surface, etc. where the lamp body 11 is installed so that the unevenness of illumination over the whole surface to which the lamp body is installed can be reduced and comfortable visual circumstance, obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a lighting fixture, and more particularly to a fixture that emits indirect light from the ceiling side.

(Prior art) Conventional lighting equipment of this type that emits indirect light is, for example,
As shown in FIG. 8, an irradiation opening is formed on the lower surface of the fixture main body 1 embedded and fixed in the ceiling surface, and a light source 2.2 such as a fluorescent lamp contained in the fixture main body 1 is covered in this irradiation opening. A structure was adopted in which light shielding plates 3 and 3 whose inner surfaces were reflective surfaces were provided, and reflected light reflected by a reflecting plate 4 provided inside the instrument body 1 was emitted from between the light shielding plates 3.3.

(Problem to be Solved by the Invention) In the conventional indirect lighting fixture that emits reflected light shown in Fig. 8 above, the irradiation light emitted from the fixture does not directly illuminate the ceiling surface to which the fixture body is attached. However, uneven illumination occurs between the reflective surface exposed between the light-shielding plates of the fixture body and the ceiling surface, which not only impairs the appearance but also makes it difficult to provide a comfortable viewing environment.

The present invention has been made to solve the above problems,
To provide a lighting fixture with indirect illumination that can illuminate not only the lower part of the fixture body but also the surface to which the fixture body is attached, such as the ceiling surface, so that uneven illumination over the entire surface of the fixture body is reduced and a comfortable visual environment can be obtained. It is something.

In addition, the invention according to claim 2 prevents the side reflector from forming a shadow, so that the shadow of the instrument does not occur.
The present invention provides a lighting fixture that further improves the visual environment.

[Structure of the invention]

(Means for Solving the Problems) A lighting fixture of the present invention includes a fixture body containing a light source and having an irradiation opening on the lower surface, and a fixture body disposed below the fixture body opposite to the irradiation opening and having an upper surface and a lower surface. A central part (having a substantially triangular vertical section) having a reflecting surface inclined downward from the central part toward the periphery, and a central part located to the side of this central reflector and below the irradiation opening of the instrument main body. The side reflecting surface is arranged downward from the upper part and is inclined toward the central reflector side, and is formed continuously with the side reflecting surface opposite to the single reflecting surface of the central reflector 1, and is formed continuously with the side reflecting surface below the central reflector. It is characterized by comprising a side reflector which is bent toward the center reflector and has a lower reflective surface opposite to the lower reflective surface of the central reflector.

In the invention according to claim 2, the side reflector is located on the side of the central reflector, is disposed below the irradiation opening of the instrument main body, and is inclined downward from the top toward the central reflector. a first side reflector whose outer surface is a reflective surface;
A reflective surface disposed below the first side reflector, inclined downward from the top toward the central reflector, and facing the lower reflective surface of the central reflector and the outer reflective surface of the first side reflector. and a second side reflector having.

(Function) In the lighting fixture of the present invention, a part of the luminous flux emitted from the light source is reflected from the irradiation aperture of the fixture body on the upper reflective surface of the central reflector, and the light ray reflected on this upper reflective surface is reflected in the luminaire body. The object to which it is attached, such as a ceiling surface, is irradiated towards the surface.
Further, a part of the light beam emitted from the light source is reflected by the reflective surfaces of the side reflectors toward the lower reflective surface of the central reflector, and the light beam reflected by the lower reflective surface is irradiated downward.

In the invention as set forth in claim 2, a part of the luminous flux emitted from the light source is reflected by the lower reflective surface of the central reflector and illuminates the surface of the device to which the instrument body is attached. A part of the luminous flux emitted from the second side reflector is reflected from the reflective surface of the second side reflector toward the lower reflective surface of the central reflector, and is irradiated to the upper left of this lower reflective surface. A part of the reflected light reflected by the reflective surface of the body is reflected in the first 1l
The light reflected toward the outer reflective surface of the ll-#J reflector and reflected by the outer reflective surface of the first side reflector is irradiated toward the mounting surface.

(Embodiment) The configuration of an embodiment of the present invention will be described with reference to FIG. 1 of the drawings.

Reference numeral 11 denotes a device body that contains light al12 such as a plurality of straight tube fluorescent lamps arranged in parallel, and this device body 11 has an irradiation opening 13 formed on the lower surface, and a surface 14 of which it is installed, such as a ceiling surface, is irradiated. The opening 13 is embedded and fixed so that the mounting surface is substantially flush with the surface 14. Further, each light source 12 is provided with a reflector 15 that reflects the luminous flux emitted from the light source 12 toward the irradiation aperture 13.

Further, 16 is a reflector unit, and this reflector unit 16
41 end plates 17 provided at both ends, a central reflector 18 having both ends fixed between the end plates 17, and the central reflector 1.
8 and a pair of side reflectors 19 and 19 having both ends fixed to the end plate 17. The reflector unit 16 is suspended and supported below the instrument main body 11 by a hanging device 20 such as a chain.

The central reflector 18 is disposed below the instrument main body 11 to face the irradiation opening 13, and has an upper reflective surface 21 on its upper surface that is inclined substantially linearly downward from the center toward the periphery. and a lower reflective surface 22 that is inclined downward from the center toward the periphery in a generally concave arc shape.

The pair of side reflectors 19.19 are located on both sides of the central reflector 18 and are disposed below the irradiation opening 13 of the instrument main body 11, and extend downward from the top toward the central reflector 181Il. A side reflective surface 23 that is inclined and faces the upper reflective surface 21 of the central reflector 18 is formed continuously on the side reflective surface 23 and is bent downwardly of the central reflector 18. It has a lower reflective surface 24 opposite to the lower reflective surface 22 .

Next, the operation of this embodiment will be explained.

The emitted light from each light source 12 is emitted directly or reflected by the reflector 15 and emitted from the irradiation aperture 13. And this light 0
4. A part of the light beam emitted from the aperture 13 is reflected by the central reflector 18.
The light beam reflected by the upper reflective surface 21 and the lower reflective surface 21 is irradiated toward the surface 14 on which the fixture body 11 is attached, such as the ceiling surface, as shown in the ceiling a, and the light source A part of the luminous flux emitted from the side reflector 19.19 is reflected toward the lower reflective surface 22 of the central reflector 18 by the reflective surface 24 of the side reflector 19. As shown above, it is irradiated downward.

Next, the structure of another embodiment will be explained with reference to FIG. 2 of the drawings.

In this embodiment, in the configuration of the lighting fixture shown in FIG. 1, the side reflectors 19.19 are arranged above and below, respectively, with first side reflectors 19a, 19a and second reflectors 19b.

The instrument main body 11 and the central reflector 18 have the same structure.

The first side reflectors 19a, 19a are located on the sides of the central reflector 18 and are connected to the irradiation opening 1 of the instrument body 11.
Reflective surfaces 23 are disposed below 3 and are inclined from the top toward the central reflector 18 side, and have reflective surfaces 23 on inner and outer surfaces, respectively.
．． It has 25. Further, the second side reflector 19b
, 19b are the first side reflectors 19a, 1
9a, and are inclined downward from the top toward the central reflector 18, and include a lower reflective surface 22 of the central reflector 18 and the first side reflectors 19a, 19a.
It has a reflective surface 26 opposite to the outer reflective surface 25 of.

A part of the luminous flux emitted from the light source 12 is reflected by the upper reflective surface 21 of the central reflector 18, and the object to which the instrument body 11 is attached is irradiated toward the surface 14 as shown at the ceiling a. A part of the light beam emitted from the light source 12 is reflected from the second side reflectors 19b, 19b's reflective surfaces 26 toward the lower reflective surface 22 of the central reflector 18, and is reflected by the lower reflective surface 22 in the direction of the arrow 11b. As shown, this second side reflector 19b, 19 is illuminated downwardly.
A part of the reflected light reflected on the reflective surface 26 of the first side reflector 19a is reflected toward the outer reflective surface 25 of the first side reflector 19a.

The reflected light reflected by the outer reflective surface 25 of 19a is indicated by arrow C.
As shown in FIG.
Since the side reflectors 19a and 19a are irradiated with reflected light, they do not cast shadows.

Further, in the above embodiment, a structure in which 48 light sources 12 are arranged in parallel has been described, but the number of light sources 12 is not limited to four, and as shown in FIG. can.

Further, as shown in FIGS. 3, 5, and 6, the first side reflectors 19a and 19a are provided with the second side reflectors 1.
9b and 19b are installed so that their positions can be adjusted freely. This first
A mounting piece 27 is provided at each end of the side reflector 19a, 19a to protrude inwardly, and a long hole 29 is formed in the piece 27 in the width direction of the instrument body 11, and the second side surface The first side reflectors 19a, 19a are attached to the lower surface of the piece 27 at both ends of the reflectors 19b, 19b. The installation is movably joined with 28 pieces.
protrude inward. Also, the first side reflector 19a
, 19a is installed by inserting a screw 30 inserted through a long hole 29 formed in the piece 27 into the second side reflector 19b, 19b.
For installation, screw into the threaded hole 31 formed in the piece 28,
Second side reflectors 19b, 19b are fixed to first side reflectors 19a, 19a. Then, loosen the screws 30 and attach the second side reflectors 19b, 19b to the instrument main body 1.
1 by sliding it in the width direction of the first side reflector 19a,
19a, and adjust the position relative to the first side reflector 19a.
, position it at a position where the shadow of 19a is reduced, and tighten the screw 30.

The second side reflectors 19b, 19b are formed by forming a linear inclined surface and horizontally bent from the lower part of the inclined surface as shown in FIG. 3, or in an arc shape as shown in FIG. You can also.

Further, as shown in FIG. 7, the second side reflector 19b is provided with a support arm 32 protruding inwardly, and the tip of the support arm 32 is a support arm that projects inwardly of the first side reflector 19a. It is also possible to adopt a structure in which it is rotatably and slidably attached to a horizontal elongated hole 34 formed in 33 with a tightening screw 35.

Further, the light source 12 is not limited to an IA tube-shaped fluorescent lamp, and any suitable light source such as a ring-shaped lamp or a light bulb can be used.The central reflector 18 has a substantially conical shape, and the side reflectors 19 have an annular shape. It can also be formed.

〔Effect of the invention〕

According to the present invention, the central reflector has a substantially triangular longitudinal section and has a reflective surface that is disposed below the instrument body facing the irradiation opening and whose upper and lower surfaces are inclined downward from the center toward the periphery. and a side reflector located on the side of the central reflector, disposed below the irradiation opening of the instrument body, inclined downward from the top toward the central reflector, and facing the upper reflective surface of the central reflector. and a side reflector having a lower reflective surface that is formed continuously with the side reflective surface, is bent downward of the central reflector, and faces the lower reflective surface of the central reflector, In indirect lighting equipment,
The light emitted from the fixture is directed not only downward, but also onto the surface to which the fixture is attached, such as the ceiling, and provides a comfortable viewing environment without uneven illumination across the entire surface of the fixture. It is.

According to the invention as set forth in claim 2, the side reflector is located on the side of the central reflector and is disposed below the irradiation opening of the instrument main body, and extends downward from the top toward the central reflector. a first side reflector that is inclined and has at least an outer surface as a reflective surface, and a lower reflective surface of the central reflector that is disposed below the first side reflector and is inclined from the top toward the central reflector; and a second side reflector having a reflective surface opposite to the outer reflective surface of the first side reflector, so that the side reflector part does not cast a dark shadow, and the brightness and darkness of the instrument is adjusted. This makes it possible to further improve the visual environment.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional explanatory diagram of a lighting fixture showing one embodiment of the present invention, FIG. 2 is a vertical cross-sectional explanatory diagram of a lighting fixture showing another embodiment of the present invention, and FIG. FIG. 4 is a vertical sectional front view of a second side reflector of a lighting device showing another embodiment of the present invention, and FIG.
The mounting of the second side reflector shown in the figure is a plan view of the piece, and FIG.
FIG. 7 is a sectional view of a joint portion of the first and second side reflectors showing another embodiment, and FIG. 8 is a longitudinal sectional front view of a conventional lighting fixture. 11... Appliance body, 12... Light source, 13... Irradiation frontage,
18...Central reflector, 19...Side reflector, 19a...
First side reflector, 19b...Second side reflector, 2
1.22...Reflection surface of central reflector 18, 23.24°2
5, 2f3...Reflection surface of side reflector.

Claims (2)

[Claims] (1) A device body containing a light source and having an irradiation aperture on the lower surface, and a device body disposed below the device body facing the irradiation aperture, with the upper and lower surfaces tilted downward from the center toward the periphery. a central reflector having a reflective surface and a substantially triangular longitudinal section; and a central reflector located to the side of the central reflector and below the irradiation opening of the instrument main body, and tilted downward from the top toward the central reflector. A side reflecting surface facing the upper reflecting surface of the central reflector; and a lower reflecting surface formed continuously on the side reflecting surface and bent downwards of the central reflector and facing the lower reflecting surface of the central reflector. A lighting equipment characterized by comprising a side reflector having a surface. (2) The side reflector is located to the side of the central reflector, is disposed below the irradiation opening of the device body, is inclined from the top downward toward the central reflector, and has at least an outer surface as a reflective surface. a first side reflector; a lower reflective surface of the central reflector and a lower reflective surface of the central reflector disposed below the first side reflector and inclined downward from the top toward the central reflector; The lighting device according to claim 1, further comprising a second side reflector having a reflective surface opposite to the outer reflective surface.