JP3037968U - Recessed reflective lighting fixture - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a ceiling embedded installation type luminaire having a novel structure for irradiating an upright surface at a predetermined height from a floor surface with a uniform illuminance from a ceiling surface. SOLUTION: A pair of reflecting mirrors 3 and 3 are arranged so as to face each other so as to sandwich the light source 1 inside a cap body in which a light source 1 such as a lamp is arranged in the center, and the reflecting mirrors 3 and 3 are formed. The shape and curvature of the reflecting surface 31 of each reflecting mirror 3 are defined so that the irradiation projection surface covers the entire surface to be irradiated of the irradiation target and the illuminance is uniform.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention distributes a luminous flux emitted from a light source arranged in a bulk body by a pair of reflecting mirrors, and reflects light emitted from each of the reflecting mirrors so that a pair of objects to be irradiated are placed opposite to each other. The present invention relates to a built-in reflective lighting fixture that illuminates the illuminated surface with a uniform illuminance.

[0002]

[Prior art]

 There are base-down type, wall washer type, universal type, etc. of embedded lighting fixtures in which a light source such as a lamp is placed in the center of the umbrella body and a reflecting mirror is installed outside the light source. Used in stores and museums. FIG. 7 shows a conventional wall-washer type embedded luminaire 100. A lamp 102 is attached as a light source to the center of a bulge 101, and the lamp 102 is sandwiched inside the bulge 101. A pair of reflecting mirrors 103 (only one of which is shown in the drawing) is arranged in the.

By the way, as shown in FIG. 8, such an embedded lighting fixture 100 is installed so as to be embedded in the center of the ceiling surface C of a narrow passage in a store, a hotel, an art museum, etc. By changing the light distribution pattern so that the illuminance of the area is higher than that of the surrounding area, a mood effect is created by the brightness of the light. For example, FIG. 9 shows an example of use on a passageway of a hotel, in which the wall surface W is consciously divided into a bright portion Wa and a dark portion Wb. In addition, such lighting fixtures can be used to spotlight the products displayed in stores to make them look more beautiful, and to paint paintings and sculptures in museums brighter than their surroundings. We are producing things such as making things stand out.

[0004]

[Problems to be solved by the device]

 However, in any of these lighting fixtures, the luminous flux emitted from the light source spreads radially and the irradiation area is widened. Therefore, the farther from the light source, the lower the illuminance there. Therefore, although such a lighting fixture 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 an island-shaped pachinko machine, as shown in FIG. As shown, by reducing the light distribution interval of the luminaire 100 and performing the overlapping light distribution design in which a part G of the irradiation area formed by each luminaire 100 is overlapped, the illuminance is reduced and unevenness is reduced. It needs to be prevented.

However, such a light distribution design is difficult, and a large number of lighting fixtures must be installed per unit area, which causes a problem of high cost. The present invention has been made to solve the above problems, and while taking advantage of the ceiling-embedded type, unlike the conventional base-down type, wall washer type, universal type, etc. It is an object of the present invention to provide an embedded reflective illuminating device having a novel structure in which light reflected by a mirror is radiated onto an illuminated surface of an object to be illuminated so that the illuminance is uniform.

[0006]

[Means for Solving the Problems]

 The present invention is proposed to achieve the above object, and in the embedded reflective lighting device according to claim 1, two reflected surfaces of the pair of reflecting mirrors are opposed to each other by the respective reflected lights. Since it is possible to irradiate uniformly at the same time, it is possible to reduce the number of lighting fixtures installed per unit area.

Therefore, unlike the conventional case, it is not necessary to shorten the light distribution interval of a plurality of lighting fixtures and overlap the alignment patterns, and the light distribution design is facilitated. Further, in claim 2, it is preferably used when the irradiated surface is rectangular, but in claim 3, it is used as a lighting fixture for irradiating the irradiated surface standing upright from the floor surface at a predetermined height. According to claim 4, as in a pachinko parlor or a game center, a game table or display arranged opposite to each other for irradiating a surface to be illuminated such as a game table or display stand arranged in an island shape at a predetermined interval. It is proposed to be used by embedding it in the ceiling of the space between the stands.

[0008]

[Embodiment of the invention]

 Hereinafter, an example of the embedded reflective lighting device according to the present invention will be described with reference to the drawings. FIG. 1 is a partially cutaway perspective view schematically showing an embedded reflection type lighting fixture according to the present invention, FIG. 2 is a half cutaway view thereof, FIG. 3 is a front view, and FIG. 4 is a rear view. In addition, FIG. 5 is a diagram illustrating an example of use of the embedded reflective lighting fixture according to the present invention.

In this embedded luminaire A, a vertically long lamp 1 is housed as a light source in the center of a megaphone-shaped bulge 2 having a widened end, and a pair of reflecting mirrors are provided in front of the lamp 1. The lamps 3 and 3 are arranged to face each other so as to sandwich the lamp 1. The umbrella body 2 has a light-scattering portion 2a having a fine uneven surface formed on the inner side thereof, and the light-scattering portion 2a is further provided with a wide-mouthed reflecting portion 2b having a divergent opening. The wide-mouth reflecting portion 2b is extended to a size required for glare cutting, and the bulky body 2 has a gourd shape with a step portion as a whole.

The light source 1 has a high light source brightness, a long life, and uses a long (large) HID lamp in order to prevent uneven illuminance. The part 2a radiates the light with a uniform and even spread. The umbrella body 2 is attached to a frame body 4 formed by fixing three attachment frames 42 to a ring-shaped bottom plate 41. For this reason, the leaf springs 6 whose tips are bent in a V shape are attached to the upper inner surfaces of the three mounting frames 42, and the leaf springs 6 are elastically engaged with the convex portions 21 formed at the base end of the umbrella body 2. As a result, the umbrella body 2 can be detachably attached to the frame body 4.

A socket portion 8 provided at the rear end of the lamp 1 projects into a hole portion 41 a formed in the center of the bottom plate 41, and this socket portion 8 has a U-shaped frame 7 attached to the bottom plate 41 by thumbscrews 9. It is fixed to the bottom plate 41 by screwing with. A notch 42a is opened at the tip of the three mounting frames 42, and when the bulkhead 2 is inserted into a hole (not shown) formed in the ceiling surface, the fixture is provided from this notch 42a. 5 is projected and fixed. Reference numeral 10 denotes a chain for elastically engaging the mounting frame 42 with a leaf spring 6 to prevent the umbrella body 2 from falling off. One end is secured to the base portion of the umbrella body 2 and the other end is secured to the tip of the mounting frame 42. ing.

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

For example, when the surface to be illuminated has a rectangular shape, the irradiation area of the reflected light emitted from each reflecting mirror covers the entire surface of the rectangular surface to be illuminated, and thus the reflection surface has a circular shape. Also has a rectangular shape, and 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 light flux of the reflected light that diffuses to the outside of the illuminated surface is condensed so that the illuminance in both directions does not become darker than that in the central part, and the vertical curvature of the reflective surface is on the lower end side. As it becomes more and more, the light is gradually increased so that the light flux of the reflected light which diffuses to the lower side of the irradiated surface is condensed so that the lower end side is not darker than the central part.

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

The curved surface shape of the reflecting surface 31 of the reflecting plate 3 is actually set based on the designed light distribution curve and isochoric curve in consideration of the installation conditions of the lighting fixture. Next, a usage example of such an embedded reflective lighting fixture A will be described. Taking the case of illuminating a game board of a pachinko machine as an example, the luminaire A includes an island Is arranged with a plurality of pachinko machines P ... And an adjacent island Is facing each of these islands. It is embedded in the ceiling surface C formed between them, and at this time, each of the pair of reflecting mirrors 3, 3 uses the respective game board surfaces G, G of the pachinko machines P facing each other as the irradiated surface to reflect the reflected light. Irradiate.

According to the luminaire A as described above, the light directly radiated from the light source 1 and the light scattering portion 2 a at the inner back portion of the light source 1 are reflected in the lower periphery centered directly below the luminaire A. Light is emitted as it is, but since the luminous flux emitted from each of the pair of reflecting mirrors 3 is emitted at a uniform density on the game board surface G of the pachinko machine P, the game board surface of the pachinko machine P is Even if G is arranged vertically from the floor surface F, it is illuminated with a uniform illuminance as a whole.

Therefore, according to such a lighting fixture A, when the lighting fixture A is installed on the ceiling surface of the passage, as shown in FIGS. 6A, 6B, and 6C, immediately below The illuminance is set to the minimum necessary as the passage portion S3, and a large number of light beams are distributed to a pair of facing surfaces S1 and S2 that irradiate the reflected light formed by the pair of reflecting mirrors 3 and 3. A pattern can be defined.

Therefore, the light distribution design can be facilitated, and the number of lighting fixtures A to be installed per unit area can be reduced, and the upright surface arranged perpendicular to the floor surface is used as the irradiation surface. Even in such a case, it is possible to uniformly and uniformly illuminate in both horizontal and vertical directions, so that it is possible to prevent human eyestrain and the like. Therefore, it is most suitable for lighting equipment such as pachinko game consoles, store product display cases, and display shelves in museums (eg, paintings hanging vertically in display shelves in museums). .

[0019]

[Effect of the invention]

 As described above in detail, in the embedded reflective lighting fixture according to the present invention, a pair of reflecting mirrors having a contour shape and a curvature defined according to the surface to be illuminated are arranged so as to face each other so as to sandwich the light source. Therefore, it is possible to illuminate the irradiation surface of two irradiation objects that are arranged opposite to each other with uniform illumination.

For this reason, it is not necessary to shorten the light distribution interval of a plurality of lighting fixtures and to design the light distribution so that the portions where the illuminance emitted from the respective lighting fixtures is low are overlapped, unlike the conventional art. In addition to facilitating the light distribution design, the light distribution interval of a plurality of lighting fixtures can be lengthened, and the number of lighting fixtures installed per unit area can be reduced. In addition, such a lighting fixture is most suitable for illuminating the game board surface of a pachinko machine with the illuminated surface standing upright on the floor surface, or the entire or specific part of a display shelf such as a store or museum. .

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view schematically showing an embedded reflective lighting fixture 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 (a) is a light distribution curve diagram of an embedded reflective lighting fixture,
(B), (c) is explanatory drawing of the usage example.

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

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[Procedure amendment]

[Submission date] December 9, 1996

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Claims for utility model registration

[Correction method] Change

[Correction contents]

[Utility model registration claims]

Claims (4)

[Utility model registration 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. When the surface to be irradiated of the object to be irradiated has a rectangular shape, the reflecting surfaces of the pair of reflecting mirrors have a lateral curvature gradually increasing toward both ends thereof, and in the longitudinal direction. The curvature of
The embedded reflection type lighting fixture, wherein the embedded reflection type lighting fixture is characterized in that it becomes gradually larger toward the lower end side and has a curved surface with a rectangular outline. 3. An embedded reflective lighting fixture, wherein the surface to be irradiated of the irradiation object is a standing surface arranged at a predetermined height above the floor surface. 4. The illuminated surface of the object to be illuminated is a set of rectangular game stands or display stands, which are arranged facing each other while maintaining a predetermined distance, and the embedded reflective lighting fixture is opposed. 3. The structure is embedded in a ceiling surface between a set of arranged irradiation objects, and the structure is such that the irradiated surface of the set of irradiation objects is irradiated by the pair of reflecting mirrors. Embedded reflective lighting fixture.