JPH10125116A - Luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a luminaire capable of widening a light emitting area, obtaining uniform luminous intensity distribution, and enhancing comfortable brightness. SOLUTION: A luminaire has a luminaire main body 1 comprising an inner frame 3 and an outer frame 4, formed in (square) shape, and having a plurality of louver pieces between the inner frame 3 and the outer frame 4, and a lamp 2 arranged in (square) shape on the back surface side of the luminaire main body 1. The inner frame 3, the outer frame 4, and the louver piece 5 are constituted so that each of the inner frame 3, the outer frame 4, and the louver piece 5 forms a first glare cut angle θ1 to light passing between the inner frame 3 and the outer frame 4 of the lamp 2, and an angle formed by a surface containing a rear end part 10 of a side piece 11 of the inner frame 3 and a front end part 13 of a facing side piece 12 to the opening surface of the inner frame 3 forms a second glare cut angle θ2 to light passing through an inner space 17 of the lamp 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting fixture.

[0002]

2. Description of the Related Art As a base lighting device to be installed on the ceiling of a space where a certain illuminance is required, a mouth-shaped device body 4 is used.
In some cases, a straight tube lamp is arranged along the side (for example, JP-A-2-79302, JP-A-6-31008).

[0003]

However, there is a problem that the light emitting area is small and uniform alignment cannot be obtained. Therefore, an object of the present invention is to provide a lighting apparatus which can increase a light emitting area, obtain a uniform orientation, and improve comfortable luminance.

[0004]

According to a first aspect of the present invention, there is provided a lighting apparatus comprising:
An appliance body having a shape of a mouth composed of an inner frame and an outer frame and having a plurality of louver pieces spanning between the inner frame and the outer frame, and the inner frame and the outer frame on the back side of the appliance body. Between the inner frame and the outer frame of the lamp, the lamp being arranged in a shape of a mouth at a position between the inner frame and a lamp capable of being incident between the inner frame and the outer frame. The inner frame, the outer frame, and the louver piece form a first glare cut angle with respect to light passing through the inner frame, the outer frame, and the louver piece.
Along with forming the outer frame and the louver piece, for the light passing through the inner space of the lamp, the rear end of the side piece of the inner frame along the lamp and the inner frame facing the side piece. An angle formed between a surface including the front end of the opposing side piece and the opening surface of the inner frame is a second glare cut angle.

According to the luminaire of the first aspect, the lamp is arranged so that the lamp light is emitted through the space between the inner frame and the outer frame and the light passes through the inner space of the inner frame while maintaining a certain glare angle. By doing so, you can feel the brightness of the interior space due to reflected light like indirect lighting, and you can feel the brightness with comfortable brightness without causing unpleasant lamp glare within the viewing angle, Also, the light emission area can be increased by the amount having the luminance, and the light entering the visual field increases.
In addition, uniform orientation without directivity can be obtained, orientation control such as bat wing can be controlled, and efficient design can be achieved with evenly arranged illumination design. In addition, by changing the surface treatment of the inner frame, outer frame, and louver pieces, it is possible to obtain a sense of brightness by changing the color temperature and brightness intensity according to the preference, and the same power consumption without using a separate light source Thus, the color temperature and luminance can be selected between the inner space of the device and the inner and outer frames, and the brightness can be adjusted by the difference in luminance and the color temperature.

According to a second aspect of the present invention, in the luminaire according to the first aspect, the second glare cut angle is smaller than the first glare cut angle. According to the illumination device of the second aspect, the glare-cut illumination range can be expanded. According to a third aspect of the present invention, in the lighting apparatus according to the first aspect, the lighting device main body includes a reflecting plate having a lower surface formed on a reflecting surface to cover the louver piece and the lamp.

According to the lighting apparatus of the third aspect, in addition to the effects of the first aspect, the luminance can be further increased and the illumination can be made brighter.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS. That is, this lighting fixture has the fixture main body 1 and the lamp 2. Instrument body 1
Is a character shape of a mouth composed of an inner frame 3 and an outer frame 4;
And a plurality of louver pieces 5 extending between the outer frame 4 and both sides of the inner frame 3 and the outer frame 4 also function as louvers. The appliance main body 1 of the embodiment is embedded in an embedding hole 7 of a ceiling 6. Further, the reflection plate 8 whose lower surface is formed on the reflection surface and covers the upper part of the louver piece 5 and the lamp 2 is attached to the inner frame 3.
Also, a reflection surface is formed above the inner space 17 of the inner frame 3 arbitrarily, provided at the rear end of the outer frame 4. Reference numeral 9 denotes a ballast provided on the lower surface of the extended end of the reflector 8.

The lamp 2 has an inner frame 3 on the rear side of the appliance body 1.
It is arranged in the shape of a mouth at a position between the inner frame 3 and the outer frame 4 so as to be able to enter between the inner space 17 of the inner frame 3 and the inner frame 3 and the outer frame 4. In the embodiment, a lamp socket 15 is provided corresponding to each side between the inner frame 3 and the outer frame 4 of the connecting portion 14 connecting the outer frame 4 and the reflector 8, and the lamp socket 1 is provided.
5 is equipped with a lamp 2. A compact fluorescent lamp is used as a straight tube lamp.

The light passing between the inner frame 3 and the outer frame 4 of the lamp 2 is applied to the inner frame 3, the outer frame 4 and the louver pieces 5.
Are formed so that each of them forms a _first glare cut angle θ ₁ with respect to the opening surface (horizontal plane) of the inner frame 3, and the louver piece 5 and the inner space 17 of the lamp 2.
The rear end (upper end) of the side piece 11 of the inner frame 3 along the lamp 2 and the front end (lower end) of the opposing side piece 12 of the inner frame 3 facing the side piece 11 for light passing through the lamp 2. The angle formed by the plane including the opening and the opening plane (horizontal plane) of the inner frame 3 is the second glare cut angle θ ₂ . In the embodiment, θ ₁ = θ ₂ = 3
0 degrees. Therefore, the lamp 2 is located below the second glare cut angle θ _{2 and} the inner space 17 of the inner frame 3
Since the lamp 2 cannot be seen from the opening, the lamp 2 does not feel dazzling. As a result, the brightness seen in the inner space 17 is not direct light, and only the light reflected by the reflector 8 or the louver 5 comes into view.

According to this embodiment, the lamp light is emitted through the space between the inner frame 3 and the outer frame 4 and the light passes through the inner space 17 of the inner frame 3 while maintaining a certain glare angle. By arranging the inner space 17, the brightness due to the reflected light such as the indirect lighting is felt in the inner space 17, and the brightness can be felt with comfortable brightness without causing unpleasant lamp glare within the viewing angle. The luminous area can be increased by the amount corresponding to the luminance in the inner space 17, and the amount of light entering the visual field increases. In addition, uniform orientation without directivity can be obtained, orientation control such as bat wing can be controlled, and efficient design can be achieved with evenly arranged illumination design. Further, by changing the surface treatment of the inner frame 3, the outer frame 4, and the louver pieces 5, a feeling of brightness in which the color temperature and the intensity of the brightness are changed according to the preference can be obtained, without using another light source. With the same power consumption, the color temperature and the luminance can be selected between the inner space 17 of the appliance and the inner frame 3 and the outer frame 4, and the adjustment of the brightness can be adjusted by the difference in the luminance and the color temperature.

Therefore, for example, in a store, it is possible to make the luminance of the appliance not to be uncomfortable in the field of view, to make the space bright, to have a large light emitting area, and to add a luminance accent or color rendering accent. In addition, the illuminance on the horizontal plane can be efficiently secured. The second glare shielding angle theta _2, when formed to be smaller than the first glare shielding angle theta _1, can expand the range of illumination glare shielding.

Further, when the reflection plate 8 having the lower surface formed on the reflection surface and covering the upper part of the louver piece 5 is provided, the luminance can be further increased and the illumination can be made brighter. FIGS. 3 and 4 show a second embodiment of the present invention. That is,
In this luminaire, in the first embodiment, the outer surface of the inner frame 3, the inner surface of the outer frame 4, and the surfaces of the opening space formed by the louver pieces 5 are each a semi-mirror surface P _1, and the inner surface of the inner frame 4 is as diffusion surface P ₂ of the full diffusion resistance, by changing the luminance difference.

By adopting such a configuration, on the reflecting surface having a large absolute amount of light amount hitting the reflecting surface of the louver piece 5 in the hatched portion in FIG. 4, the diffuse reflectance for reflecting in the visual field is adjusted. The luminance difference between the inner space 17 and the shaded area can be reduced to make the luminance nearly uniform, and conversely, the diffusion rate can be suppressed to reduce the luminance in the shaded area.

Conversely, by making the hatched portion a diffusion surface, it is also possible to increase the brightness of the hatched portion and lower the interior space 17 side to accentuate the brightness. A third embodiment of the present invention is shown in FIGS. That is, in this lighting apparatus, in the first embodiment, the surface treatment is changed on the inner space 17 side and on the outside of the mouth, but the surface treatment is not performed on the diffusion surface P ₃ and the diffusion surface P ₄ but on the diffusivity. Are distinguished by different colors. For example, there are combinations of those that reduce reflection in the visible wavelength region, which is a color different from silver and gold, and white, and the like.

With this configuration, although only one type of lamp 2 having the same color temperature is used, the inner space 17 shown by oblique lines and the outer side where the louver piece 5 is located, as shown in FIG. Two types of light emitting surfaces can be visually recognized. In the present invention, the lamp is not limited to the above,
A straight tube fluorescent lamp or the like may be used.

[0017]

According to the luminaire of the first aspect, the lamp emits light through the space between the inner frame and the outer frame, and the light passes through the inner space of the inner frame while maintaining a certain glare angle. By arranging the inside, the interior space can feel the brightness due to the reflected light such as indirect lighting, and it can feel the brightness with comfortable brightness without causing unpleasant lamp glare within the viewing angle. The light emitting area can be increased by the amount of brightness in the space, and the amount of light entering the visual field increases. In addition, uniform orientation without directivity can be obtained, orientation control such as bat wing can be controlled, and efficient design can be achieved with evenly arranged illumination design. In addition, by changing the surface treatment of the inner frame, outer frame, and louver pieces, it is possible to obtain a sense of brightness that changes the color temperature and brightness intensity according to the preference, and the same power consumption without using a separate light source Thus, the color temperature and the luminance can be selected between the inner space and the inner frame and the outer frame of the appliance, and the adjustment of the brightness can be adjusted by the difference in the luminance and the color temperature.

According to the illumination device of the second aspect, the glare-cut illumination range can be expanded. According to the lighting device of the third aspect, in addition to the effect of the first aspect, the luminance can be further increased, and the illumination can be made brighter.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of a first embodiment of the present invention.

FIG. 2 is a perspective view showing a state where the camera is mounted on a ceiling.

FIG. 3 is a schematic sectional view of a second embodiment.

FIG. 4 is a front view of a state in which the camera is mounted on a ceiling and viewed from below.

FIG. 5 is a schematic sectional view of a third embodiment.

FIG. 6 is a front view of a state in which the camera is mounted on a ceiling, as viewed from below.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Instrument main body 2 Lamp 3 Inner frame 4 Outer frame 5 Louver piece 8 Reflector 10 Rear end 11 Side piece 12 Opposing side piece 13 Front end θ1 _First glare cut angle θ2 _Second glare cut angle

Claims (3)

[Claims] 1. An appliance body having a shape of a mouth composed of an inner frame and an outer frame and having a plurality of louver pieces spanning between the inner frame and the outer frame, and the inner frame on the back side of the appliance body. And a lamp arranged in a shape of a mouth at a position between the outer frame and a lamp capable of being incident between the inner space of the inner frame and the inner frame and the outer frame, and the inner frame of the lamp and The inner frame, the outer frame, and the louver piece are configured so that each of the inner frame, the outer frame, and the louver piece forms a first glare cut angle with respect to light passing between the outer frames. And a rear end of a side piece of the inner frame along the lamp and a front end of a facing side piece of the inner frame facing the side piece with respect to light passing through the inner space of the lamp. A lighting device configured such that an angle between the surface and the opening surface of the inner frame is a second glare cut angle; . 2. The luminaire according to claim 1, wherein the second glare cut angle is smaller than the first glare cut angle. 3. The luminaire according to claim 1, wherein the luminaire main body has a reflection plate having a lower surface formed on a reflection surface and covering the louver piece and the lamp.