JPH10106313A - Reflex type luminaire of embedded structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a luminaire of ceiling embedded type of such a structure that a riser surface at a prescribed level over the floor surface is irradiated from the ceiling surface with a uniform illuminance. SOLUTION: In such a way as pinching a light source 1 such as a lamp, a pair of reflection mirrors 3 are installed opposingly inside a shade in which the light source 1 is installed in the center. An irradiation projection surface formed from the two reflection mirrors 3 covers the whole irradiated surface of an object, and the shape and curvature of the reflecting surface of each mirror 3 are specified so that the illuminance becomes uniform.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light beam emitted from a light source disposed inside a shading body, which is divided by a pair of reflecting mirrors.
The present invention relates to an embedded reflection-type lighting apparatus configured to irradiate an illuminated surface of a pair of objects to be illuminated facing each other with uniform illuminance.

[0002]

2. Description of the Related Art There are base-down type, wall washer type, universal type, etc. of a recessed type luminaire in which a light source such as a lamp is disposed in the center of a shading body and a reflecting mirror is provided outside the light source. It is used in hotels, stores, and museums. FIG. 7 shows a conventional wall washer-type embedded lighting fixture 100, in which a lamp 102 is attached as a light source at the center of a bulk body 101, and the lamp 102 is sandwiched inside the bulk body 101. A pair of reflecting mirrors 103 (only one is shown in the figure) is arranged.

[0003] By the way, such an embedded lighting fixture 10
Numeral 0 denotes a light distribution pattern that is installed so as to be embedded at the center of the ceiling surface C of a narrow passage such as a store, a hotel, or a museum, as shown in FIG. The mood is produced by changing the light. For example, FIG. 9 shows an example of use on a passageway of a hotel, in which a wall surface W is consciously divided into a bright portion Wa and a dark portion Wb and illuminated. In addition, such lighting fixtures illuminate a product displayed in a store in a spot-like manner to make it more beautiful, and a painting or sculpture to illuminate a painting or sculpture of a museum more brightly than its surroundings. He is directing such as raising

[0004]

However, in such a lighting apparatus, the luminous flux emitted from the light source is radially spread and a wide irradiation area is widened. Therefore, as the distance from the light source increases, the distance from the light source increases. The illuminance there will be lower. Therefore, such a lighting device has an advantage that it does not take up an installation space because it is installed on the ceiling. For example, when illuminating each game board surface of a pachinko machine provided in an island shape, it is shown in FIG. As mentioned above, the lighting fixture 10
It is necessary to prevent the reduction and unevenness of the illuminance by shortening the light distribution interval of 0 and performing a superimposed light distribution design in which a part G of the irradiation region formed by each lighting fixture 100 is superimposed.

[0005] However, such a light distribution design is difficult, and a large number of luminaires per unit area must be installed, resulting in a problem such as an increase in cost. The present invention has been made to solve the above problems,
While taking advantage of the ceiling-mounted type, unlike the conventional base-down type, wall washer type, universal type, etc., the light reflected by the reflecting mirror is radiated to the illuminated surface of the irradiation target so that the illuminance is uniform. It is an object of the present invention to provide an embedded reflective lighting device having a novel structure.

[0006]

SUMMARY OF THE INVENTION The present invention has been proposed to achieve the above-mentioned object. In the recessed reflection type luminaire according to the first and second aspects, the reflected light of each of a pair of reflectors is used. Since the two illuminated surfaces arranged opposite to each other can be uniformly irradiated at the same time, the number of luminaires provided per unit area can be reduced.

[0007] Therefore, unlike the related art, it is not necessary to shorten the light distribution interval of a plurality of luminaires and superimpose light distribution patterns, thereby facilitating light distribution design. According to a third aspect, the present invention is preferably used when the surface to be illuminated is rectangular. In a fourth aspect, a gaming table or a display, such as a pachinko parlor or a game center, is arranged in an island shape at predetermined intervals. In order to irradiate a surface to be illuminated, such as a table, there has been proposed a device that is embedded in a ceiling surface of a gap between a gaming table and a display table arranged opposite to each other.

In particular, since the gaming tables and display stands proposed in claim 4 are arranged in an island shape, a plurality of display stands in the vertical direction are arranged in the horizontal direction. It is necessary to illuminate the display stand not only in the horizontal direction but also in the vertical direction, evenly and uniformly, without uneven illuminance. The same applies to a desired area such as the whole or a specific portion of the display shelves arranged in an island shape in a store, a museum, or the like, and the embedded lighting fixture of the present invention can sufficiently achieve these objects.

The present inventors have attempted to improve conventional lighting fixtures such as a base-down recessed lighting fixture, a universal down-mounted recessed lighting fixture, and the above-mentioned wall washer-mounted recessed lighting fixture. As a result, the shape of the sub-reflector of a conventional wall washer-type recessed lighting fixture, which was thought to be used exclusively for intentionally brightening or darkening a specific place, was considered. If devised,
In addition to reducing the number of luminaires provided per unit area, we have found that it is possible to illuminate the desired area of the irradiated object not only horizontally but also vertically with uniform illuminance. As a result, the present invention has been completed.

In the present invention, when the object to be illuminated by each of the pair of sub-reflectors is formed in a rectangular shape (also referred to as a square shape), the reflected light radiated from the light source and reflected by the sub-reflectors However, the size and the shape may be set so as to spread with a spread matching the contour of the irradiation target having a rectangular shape (also referred to as a square shape). In such a recessed luminaire, the lateral curvature of the sub-reflector is gradually increased as it goes to both ends, so that the lateral ends of the illuminated object whose illuminance is low have a per unit area. More light is directed to the For this reason, the irradiation target can be illuminated in the horizontal direction with an even and substantially uniform illuminance.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an example of an embedded reflection type lighting apparatus according to the present invention. FIG. 1 is a partially cutaway perspective view schematically showing a recessed reflective lighting device according to the present invention, FIG. 2 is a half cut sectional view thereof, and FIG.
Is a front view, and FIG. 4 is a rear view. FIG. 5 is a diagram illustrating an example of use of the embedded reflective lighting fixture according to the present invention.

In this recessed lighting device A, a vertically elongated lamp is provided with a light source 1 in the center of a megaphone-shaped shank 2 having a widened end.
In front of the lamp 1, a pair of reflecting mirrors 3, 3 are arranged to face each other so as to sandwich the lamp 1.
The inside of the bulk 2 is formed with a light scattering portion 2a having a fine uneven surface formed therein, and the light scattering portion 2a further extends a wide-mouthed reflection portion 2b which opens in a divergent shape. The reflecting portion 2b is extended until the size required for glare cutting is reached, and the bulk 2 is in the form of a gourd with a step as a whole.

The light source 1 has a high light source luminance, a long life,
In addition, the dimension is long (large) to prevent uneven illuminance.
A HID lamp is used, and the light beam emitted from the bulk 2 is emitted uniformly and uniformly by the light scattering portion 2a. The bulk 2 is mounted on a frame 4 formed by fixing three mounting claims 42 to a ring-shaped bottom plate 41. For this reason, a leaf spring 6 whose distal end is bent in a U-shape is attached to the upper inner surface of the three attachment claims 42, and this leaf spring 6 is elastically engaged with the convex portion 21 formed at the base end of the shank 2. By the bulk body 2
Can be detachably attached to the frame 4.

A socket portion 8 provided at the rear end of the lamp 1 is projected from a hole 41a formed in the center of the bottom plate 41.
The socket portion 8 is fixed to the bottom plate 4 by screwing the U-shaped frame 7 to the bottom plate 4 with a thumb screw 9. Cutouts 42a are opened at the distal ends of the three mounting frames 42. When the umbrella body 2 is inserted into a hole (not shown) formed in the ceiling surface, the mounting fixture 5 is inserted through the cutouts 42a. And fix it. Reference numeral 10 denotes a chain for preventing the shank 2 from falling off, which is elastically engaged with the mounting frame 42 by the leaf spring 6. One end is fixed to the base of the shank 2, and the other end is fixed to the tip of the mounting frame 42. ing.

Next, the pair of reflecting mirrors 3 and 3 will be described. Each of the pair of reflecting mirrors 3 and 3 reflects the light emitted from the lamp 1 on its reflecting surface to illuminate the surface to be illuminated.
31 is formed in a contour shape corresponding to the irradiated surface so that the reflected light radiated by the respective reflecting surfaces 31 and 31 illuminates the entire irradiated surface of the irradiation object, and is irradiated with light. In order to obtain uniform illuminance over the entire surface, the curvature of each part of each reflecting surface 31, 31 is defined.

For example, when the surface to be illuminated has a rectangular shape, the irradiation area of the reflected light radiated from each of the reflecting mirrors covers the entire rectangular surface to be illuminated. In this case, the lateral curvature of the reflecting surface is gradually increased toward both ends so that the entire illuminated surface has a uniform illuminance. The luminous flux diffused out of the irradiated surface is condensed so that the illuminance in both sides is not darker than the central part, and the vertical curvature of the reflecting surface is closer to the lower end side. In this way, the light flux of the reflected light diffused to the outside of the surface to be irradiated is condensed so that the lower end portion is not darker than the central portion.

As described above, the contour shape and the curvature of the reflecting surface of the reflecting mirror are determined according to conditions such as the position from the lighting fixture to the surface to be illuminated, the contour shape of the illuminating surface, and the inclination of the reflecting mirror. The curvature is set to an optimum value so that the entire area of the surface is illuminated with uniform illuminance. Considering the straightness of light, the contour of the reflecting surface of the reflecting mirror is similar to the surface to be illuminated, but the illuminated area formed by the light reflected by the reflecting surface is more peripheral than the central part. Since the illuminance of the portion generally becomes dark, the curvature is set to be large on the outer side, so that the illuminance on the surface to be irradiated becomes uniform.

The shape of the curved surface of the reflecting surface 31 of the reflecting plate 3 is actually set based on the light distribution curve and the equal light curve designed in consideration of the installation conditions of the lighting equipment. Next, an example of use of such a built-in reflective lighting fixture A will be described. Taking the case of illuminating a game board of pachinko machines as an example, a lighting fixture A is an island Is in which a plurality of pachinko machines P are arranged and an adjacent island Is facing each of these islands.
In this case, each of the pair of reflecting mirrors 3 and 3 has the respective game board surfaces G and G of the pachinko table P disposed opposite to each other as an irradiated surface. Irradiate reflected light.

According to the luminaire A, the light directly radiated from the light source 1 and the light scattered by the light scattering portion 2a in the inner part of the light source 1 are provided below the luminaire A. However, since the light flux emitted from each of the pair of reflecting mirrors 3 is radiated at a uniform density on the game board surface G of the pachinko machine P, the game board surface G of the pachinko machine P is Even if it is arranged perpendicularly to the floor surface F, it is illuminated with uniform illuminance as a whole.

According to such a built-in reflection type lighting fixture A, the light distribution design becomes easy, the number of the lighting fixtures A provided per unit area can be reduced, and the lighting fixture A can be mounted on the floor surface. Even when the vertically erected surface is used as the surface to be illuminated, the light can be uniformly and uniformly illuminated from both the horizontal and vertical directions. it can. Therefore, the game board surface of pachinko machines,
Store product display cases, display shelves in museums, etc. (for example,
It is most suitable for lighting equipment such as a picture hanging vertically in a display shelf of a museum or the like.

[0021]

As described in detail above, the recessed reflective luminaire according to the present invention comprises a pair of reflecting mirrors having a contour and a curvature defined in accordance with the surface to be illuminated, with the light source interposed therebetween. As a result, the illuminated surfaces of the two illuminated objects facing each other can be illuminated with uniform illuminance.

Therefore, unlike the related art, it is not necessary to shorten the lighting distribution interval of a plurality of lighting fixtures and design the light distribution so that the portions where the illuminance emitted from each lighting fixture is low overlap each other. The light distribution design is facilitated, the lighting distribution interval of the plurality of lighting fixtures can be increased, and the number of lighting fixtures provided per unit area can be reduced. Further, such a lighting device is most suitable for illuminating a game board surface of a pachinko machine in which a surface to be illuminated with respect to a floor surface or an entire or specific portion of a display shelf of a store, a museum, or the like.

[Brief description of the drawings]

FIG. 1 is a partially cut-away perspective view schematically showing a recessed reflective lighting device according to the present invention.

FIG. 2 is a half plan view of a recessed reflective lighting fixture.

FIG. 3 is a front view of the recessed reflective lighting fixture.

FIG. 4 is a rear view of the recessed reflective lighting fixture.

FIG. 5 is a diagram illustrating a use state.

FIG. 6 is a light distribution curve diagram of an embedded reflective lighting fixture.

FIG. 7 is a partially cutaway sectional view showing a schematic structure of a conventional wall-washer type embedded lighting fixture.

FIG. 8 is a light distribution curve diagram of a conventional embedded lighting fixture.

FIG. 9 is a view for explaining an example of use of a conventional recessed lighting device.

FIG. 10 is a side view schematically illustrating a superimposed light distribution design used in a light distribution design of a conventional recessed lighting device.

[Explanation of symbols]

 A Recessed lighting fixture 1 Light source 2 Shade body 3 Reflector 31 Light reflecting surface P Pachinko machine G Game board

Claims (4)

[Claims] 1. A pair of reflecting mirrors are arranged opposite to each other so as to sandwich a light source inside a bulk having a light source such as a lamp disposed in the center, and an irradiation projection surface formed by the pair of reflecting mirrors emits light. An embedded reflection-type lighting apparatus characterized in that the shape and curvature of the reflecting surface of a reflecting mirror are defined so as to cover the entire illuminated surface of the object and to make the illuminance uniform. 2. A light which is mounted so as to be embedded in a central portion of an upper ceiling between illuminated objects disposed opposite to each other, accommodates a light source such as a lamp, and reflects light emitted from the light source on an inner surface. A pair of sub-reflectors, each having a reflective surface, and a pair of sub-reflectors provided in the bulk and having a light reflecting surface that reflects light emitted from the light source; The pair of sub-reflectors are arranged so as to sandwich a light source and irradiate each of the illuminated objects arranged opposite to each other. And the vertical curvature is gradually increased toward the lower end thereof, so that each of the illuminated objects is illuminated with a substantially uniform illuminance. Appliances. 3. The method according to claim 1, wherein the illuminated surface of the illuminated object has a rectangular shape, and the reflecting surfaces of the pair of reflecting mirrors have a lateral curvature closer to both ends. It gradually increases and the vertical curvature is
An embedded reflection-type lighting device, characterized in that a contour gradually increasing toward the lower end is formed on a curved surface having a rectangular shape. 4. The illuminated object according to claim 1, wherein the illuminated surface of the illuminated object keeps a predetermined interval,
A pair of rectangular gaming tables or display stands arranged in opposition, the embedded lighting device is embedded in a ceiling surface between a pair of irradiation objects arranged in opposition, and is installed by the pair of reflecting mirrors. An embedded reflection-type lighting apparatus configured to irradiate an irradiation surface of the set of irradiation objects.