WO2014097806A1

WO2014097806A1 - Illumination method and facility with illumination

Info

Publication number: WO2014097806A1
Application number: PCT/JP2013/081256
Authority: WO
Inventors: 哲夫矢野; 義一松本; 尊瀬尾
Original assignee: 独立行政法人産業技術総合研究所; 株式会社広立
Priority date: 2012-12-20
Filing date: 2013-11-20
Publication date: 2014-06-26
Also published as: TWI506230B; TW201433752A; JP5695801B2; JPWO2014097806A1

Abstract

[Problem] To provide an illumination method capable of providing uniform illumination while maintaining the brightness in a facility. [Solution] In an illumination method for illuminating the inside of a facility by installing a plurality of lighting apparatus on the ceiling of the facility, the lighting apparatus (1-4, 1-20) includes a light source in which a light source lamp is installed, and a reflection shade covering the light source lamp. The reflection shade is configured by forming a circular body by obliquely connecting trapezoidal plane reflection units in an annular shape with polygonal openings on the top and bottom, and then arranging a plurality of the circular bodies in a plurality of stages while matching the openings with each other on the top and bottom so that the tilted angles of the plane reflection units are varied between the upper and lower circular bodies. A plurality of types of the lighting apparatus (1-4, 1-20) having different number of vertices in the polygonal openings are each combined and installed on the ceiling of the facility to illuminate the inside thereof.

Description

Illumination method and illuminated facility

The present invention relates to an illumination method and a facility with illumination.

As a conventional lighting method, Patent Literature 1 discloses a lighting device including a light source lamp and a shade-shaped reflector. As shown in the cross-sectional view of FIG. 9, in this lighting fixture 50, the reflecting surface of the reflecting plate 52 that covers the light source lamp 51 is formed by three upper and lower

inclined portions

52a, 52b, and 52c having different inclination angles. The cross-sectional shape of the plate 52 is a regular polygonal shape, and the illumination range can be expanded or narrowed by adjusting the angles α and β formed by the

inclined portions

52a, 52b, and 52c. .

International Publication No. 2009/107193 Pamphlet

Although the invention of the above-mentioned Patent Document 1 has been studied to control the illumination range for a single lighting fixture, when applied to a facility with a plurality of lighting fixtures such as a gymnasium or a factory, the entire facility There is a problem that it is difficult to uniformly illuminate while maintaining the illuminance of the light.

Therefore, an object of the present invention is to provide an illumination method and an illuminated facility that can uniformly illuminate while maintaining the brightness in the facility.

The object of the present invention is a lighting method for illuminating a facility by attaching a plurality of lighting fixtures to a ceiling portion of the facility, and the lighting fixture includes a light source portion to which a light source lamp is attached and a reflection that covers the light source lamp. A plurality of annular bodies having a polygonal opening up and down by connecting the trapezoidal planar reflecting portion in an annular shape in an inclined state, while the openings are aligned with each other up and down. A plurality of types of lighting fixtures, each having a different number of polygonal angles of the opening, are combined with the ceiling portion of the facility. This is achieved by an illumination method that is mounted and illuminated. In this lighting method, a plurality of types of the lighting fixtures having different numbers of polygonal corners of the opening can be arranged at different heights.

More specifically, in the above lighting method, a plurality of types of the lighting fixtures having different polygonal corners of the opening are arranged on the center side of the facility with a larger number of the corners compared to a smaller number of corners. It is preferable to attach and illuminate the ceiling part of the facility so as to be located in each. Moreover, it is preferable to make the attachment height of the said lighting fixture with the said large number of angles larger than the attachment height of the said lighting fixture with the said small number of angles. Moreover, it is preferable to arrange an auxiliary reflecting member for diffusing the illumination light of the light source lamp in the vicinity of the center of the lower end opening of the reflecting shade.

In addition, the object of the present invention is a lighting facility in which a plurality of lighting fixtures are attached to a ceiling portion, and the lighting fixture includes a light source portion to which a light source lamp is attached, and a reflective shade covering the light source lamp. The reflective shade comprises a plurality of annular bodies having polygonal openings on the top and bottom by connecting the trapezoidal planar reflectors in an annular state in an inclined state, and the planar reflectors while matching the openings vertically. A plurality of types of lighting fixtures, each having a different number of polygonal angles of the opening, are combined with the ceiling portion of the facility, and the height Is achieved by an installed and illuminated facility.

According to the present invention, it is possible to provide an illumination method and an illuminated facility that can uniformly illuminate while maintaining the brightness in the facility.

It is a side view of the lighting fixture used for the lighting method which concerns on one Embodiment of this invention. It is a bottom view of the lighting fixture shown in FIG. It is a figure which shows the simulation result of the illumination intensity distribution which used the lower end opening shape of the reflective shade about the single lighting fixture. It is (a) schematic plan view and (b) schematic side view which show the state which installed the some lighting fixture in the facility according to the lighting method of this invention. It is a figure which shows the simulation result of the illumination intensity distribution of FIG. It is the (a) schematic plan view and the (b) schematic side view which show the state which installed the some lighting fixture in the facility according to the conventional lighting method. It is a figure which shows the simulation result of the illumination intensity distribution of FIG. It is a figure which shows the simulation result of the illumination intensity distribution which used the magnitude | size of the auxiliary | assistant reflection member as a parameter about a single lighting fixture. It is sectional drawing of the lighting fixture used for the conventional lighting method. It is the (a) schematic plan view and (b) schematic side view of the installation | installation facility which installs a lighting fixture in Example 1. FIG. It is (a) schematic top view and (b) schematic side view of the installation | installation facility in Example 2 which installs a lighting fixture.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. 1 and 2 are a side view and a bottom view, respectively, of a lighting fixture used in the lighting method according to one embodiment of the present invention. As shown in FIGS. 1 and 2, the luminaire 1 includes a light source unit 10 including a socket to which a light source lamp 12 is detachably attached, a reflection shade 20 that covers the light source lamp 12 attached to the light source unit 10, and a reflection lamp. An auxiliary reflecting member 30 supported at the lower part of the shade 20 is provided. The light source unit 10 includes an attachment part 14 at the top, and the attachment part 14 is installed on the ceiling c of the facility so that illumination light from the light source lamp 12 is irradiated from the lower end opening of the reflection shade 20. As the light source lamp 12, a conventionally used lamp such as a mercury lamp, a metal halide lamp, or an LED lamp can be used, and an LED lamp capable of obtaining high luminance with power saving can be preferably used. When the lighting fixture 1 is attached to a facility with a high ceiling, the attachment portion 14 may be configured to be an auto-lifter type in order to facilitate maintenance and inspection.

The reflective shade 20 is configured by providing five

annular bodies

22a, 22b, 22c, 22d, and 22e made of a light-reflective material such as aluminum at least on the inner surface side in five upper and lower stages, and the uppermost annular body 22a. Is supported on the outer peripheral edge of the light source unit 10. Each of the annular bodies 22a to 22e includes twelve plane reflecting portions 24 formed in an isosceles trapezoidal shape, and each of the annular reflecting portions 24 is connected to each other in an inclined state by connecting the hypotenuses in an annular shape. Regular dodecagonal openings are formed above and below the bodies 22a to 22e. Each of the annular bodies 22a to 22e is arranged so that the opening expands from the upper stage toward the lower stage, and the openings are aligned in the vertical direction so that light leakage does not occur between the respective stages. The lower end opening of 22a is used as the lower end opening 26 of the reflective shade 20. Each of the annular bodies 22a to 22e is integrated with a rivet or the like by disposing a fixing plate (not shown) on the outer surface side (opposite the reflecting surface).

The number of annular bodies 22a to 22e constituting each stage of the reflective shade 20 is not limited to that of the present embodiment, but may be a plurality, but is preferably three or more. In addition, the inclination angle θ of each of the annular bodies 22a to 22e with respect to the axial direction d of the reflecting shade 20 is preferably different from each other in the upper and lower stages, but is not necessarily different in all stages. The inclination angle θ is preferably set so that the lowermost annular body 22e is the smallest. Further, the shape of the lower end opening 26 of the reflecting shade 20 (that is, the opening shape of each of the annular bodies 22a to 22e) may be a polygonal shape of a triangle or more, and is preferably a regular polygonal shape. As will be described later, the illumination method of the present embodiment prepares a plurality of types of polygons having different numbers of corners of the lower end opening 26 and illuminates them in combination.

A lattice-shaped or radial guard 28 is attached to the lower end opening 26 of the reflective shade 20, and an auxiliary reflective member 30 is attached to the center of the guard 28. The auxiliary reflecting member 30 is formed in a conical shape, and is disposed immediately below the light source lamp 12 so as to expand downward from the vicinity of the central portion of the lower end opening 26. A gap is formed between the peripheral edge of the lower end opening 26 of the reflecting shade 20 and the outer surface of the auxiliary reflecting member 30, and the illumination light of the light source lamp 12 is irradiated through this gap. The outer surface of the auxiliary reflecting member 30 is preferably light-reflective similarly to the inner surface of the reflecting shade 20, and the illumination light from the light source lamp 10 can be reflected and diffused by the outer surface of the auxiliary reflecting member 30. The shape of the auxiliary reflecting member 30 may be other than a conical shape, and may be, for example, a polygonal pyramid shape, a hemispherical shape, a disc shape, or the like.

The number of polygonal corners of the lower end opening 26 of the reflective shade 20 has a great influence on the illuminance distribution. If the number of corners of the polygonal shape is small, the number of planar reflecting portions 24 is also small, so that the number of times the illumination light from the light source lamp 12 is reflected inside the reflection shade 20 is reduced, and the illumination light emitted from the lower end opening 26 is dispersed. It becomes easy to be done. On the other hand, when the number of polygonal corners is large, the number of planar reflection parts 24 also increases, so that the number of times illumination light is reflected between the planar reflection parts 24 increases, and the emission direction of illumination light from the lower end opening 26 is illuminated. It becomes easy to concentrate in the vertical downward direction of the instrument 1.

According to the results of simulation conducted by the present inventors, the illuminance distribution becomes more uniform as the number of polygonal corners is smaller, but the peak of illuminance decreases and the required illuminance is difficult to obtain, while the number of polygonal corners It has been clarified that the illuminance peak tends to be non-uniform, while the illuminance peak increases as the value increases. FIG. 3 is a graph showing an example of such a simulation result. The floor surface of four types of lighting fixtures 1 (however, the auxiliary reflecting member 30 is not provided) having different polygonal corner numbers at the lower end opening 26 is shown. The illuminance distribution on the floor surface in the range of 5 m on the left and right (total 10 m) centered directly below the lighting fixture 1 is shown. The shape of the lower end opening 26 of each lighting fixture 1 is a regular tetragonal shape, a regular hexagonal shape, a regular dodecagonal shape, and a regular decagonal shape, and the circumscribed circles are the same so that the installation space is the same. Set to size. As shown in FIG. 3, the peak illuminance and the uniformity (minimum illuminance / maximum illuminance) are clearly different depending on the number of polygonal corners, and the above-mentioned tendency can be confirmed.

The present invention utilizes the above-mentioned property of a lighting fixture provided with a reflective shade having a polygonal opening. When a plurality of lighting fixtures are attached to the ceiling of a facility to illuminate the facility, the polygon of the opening is used. By combining a plurality of types of lighting fixtures having different number of corners of the shape, both brightness and uniformity of illumination are achieved. In particular, by arranging a lighting device with a large number of corners on the center side of the facility with respect to a lighting device with a small number of corners, it is possible to secure sufficient illuminance at the center of the facility and The decrease in illuminance can be compensated for by a lighting apparatus having a small number of corners arranged at the peripheral edge of the facility, and this makes it possible to make the illuminance distribution uniform. There should be at least two types of lighting fixtures with different numbers of polygonal corners, but if more than two types are used, the lighting fixture with the largest number of polygonal openings is placed in the center of the facility. It is preferable to arrange the lighting fixtures having the smallest number of polygonal openings at the peripheral part of the facility so that the polygonal openings have the same or smaller number of corners toward the peripheral part.

The installation height of each lighting fixture may be the same, but in facilities such as a gymnasium, for example, the ceiling is formed in a semi-cylindrical shape, and the height of both side edges with respect to the height of the central portion Therefore, the installation height of the lighting fixtures on both side edges is inevitably lower than the installation height of the lighting fixtures in the center of the facility. In this case, it is possible to attach and illuminate a lighting fixture with a small polygonal aperture with a low peak illuminance at a lower position than a lighting fixture with a large polygonal aperture, while maintaining high illuminance. In order to make the illuminance distribution uniform, the arrangement is more preferable. In such a facility, it is preferable to set the same number of polygonal openings in each lighting fixture in the length direction of the facility where the height of the ceiling is constant.

As shown in FIG. 4, according to the lighting method of the present invention, the result of calculating the illuminance distribution by installing a plurality of lighting fixtures in the facility by simulation is shown in FIG. As shown in the plan view of FIG. 4 (a), this facility has a 15m × 15m square floor surface f, and two types of lighting fixtures 1-4 and 1-20 are arranged in a matrix of 9 in total. One is arranged. The spacing S between adjacent lighting fixtures 1-4 and 1-20 is 5 m. Of the nine lighting fixtures 1-4 and 1-20, four lighting fixtures 1-4 arranged at the four corners each have four polygonal openings in the reflective shade, and the other five lighting fixtures. 1-20 has 20 polygonal apertures in the reflective shade. As shown in FIG. 4B, the heights H1 from the floor surface f of the four lighting fixtures 1-4 are all 11 m, and the height H2 from the floor surface f of the five lighting fixtures 1-20. Are both 13 m. FIG. 5 shows the illuminance distribution on the floor surface f as a concentration distribution. Although the illuminance is high only in the center of the facility, the illuminance distribution is made uniform in the vicinity while suppressing the decrease in illuminance. I understand that. In the above two types of lighting fixtures 1-4 and 1-20, the lighting fixture 1-20 having a large polygonal opening angle is arranged only at the center of the facility, and the other eight lighting fixtures have a polygonal opening angular number. Small lighting fixtures 1-4 may be arranged.

On the other hand, as a comparative example, FIG. 7 shows the results of calculating the illuminance distribution by simulation when a plurality of lighting fixtures are installed in the facility according to the conventional lighting method as shown in FIG. FIG. 6 is the same as the installation conditions shown in FIG. 4 except that all nine lighting fixtures 1-20 have a reflective shade with a polygonal opening with 20 angles. Under this condition, as is clear from the comparison between FIG. 5 and FIG. 7, the nonuniformity of the illuminance distribution clearly appears especially in the peripheral portion of the facility, and the desired illuminance distribution can be obtained in the entire facility. Have difficulty.

In the present invention, the auxiliary reflecting member included in the lighting fixture is not essential, but by providing the auxiliary reflecting member, the illuminance distribution of the lighting fixture alone can be easily made uniform. It is effective as a means for suppressing the value. Further, as an additional effect of the auxiliary reflecting member, the light source lamp 1 is difficult to enter directly into the field of view, and glare (glare) can be suppressed, which is particularly effective for an exercise facility such as a gymnasium.

FIG. 8 shows the result of simulating the influence of the size of the bottom surface of the conical auxiliary reflecting member on the illuminance distribution for a single lighting fixture. When there is no auxiliary reflecting member, the peak illuminance value is large, but by increasing the bottom surface of the auxiliary reflecting member, the illumination range reflected by the surface of the auxiliary reflecting member is expanded and the illuminance distribution is made uniform It becomes easy to be done. In particular, by arranging a lighting fixture having an auxiliary reflecting member in the center of the facility, the peak illuminance of the lighting fixture in the center of the facility shown in FIGS. 5 and 7 can be suppressed, and the illuminance distribution is made uniform. Can be encouraged.

The facilities to which the lighting method of the present invention can be applied are not particularly limited, but facilities with high ceilings such as gymnasiums, factories, and halls are particularly suitable.

Next, the present invention will be described in more detail with reference to examples. However, the present invention is not limited to the following examples.

(Example 1)
A conventional lighting device installed on the ceiling of the Self-Defense Force Gymnasium was replaced with the lighting device of the present invention to measure how much the illuminance on the floor surface of the gymnasium was improved. The size of the gymnasium is 52.2m in length (La) and 34.5m in width (Wa), as shown in a schematic plan view in FIG. They are arranged in a matrix of 4 rows and 4 columns. As shown in a schematic side view in FIG. 10 (b), the ceiling surface of the gymnasium is curved so that the center in the width direction is high, and the height (Ha1) of the luminaires 1 in both rows is 7.4 m. The height (Ha2) of the middle two rows of lighting fixtures 1 is 9.7 m.

All of the conventional lighting fixtures used a metal halide lamp with a power consumption of 700 W as a light source lamp, and used a reflective shade with a circular opening (“SN-10034A”, manufactured by Toshiba). When replacing this luminaire with a new luminaire, the polygonal shape of the opening of the reflective shade is prepared in two types, a dodecagon and a hexagon (the number of stages of the reflective shade is 4), and the dodecagonal reflective shade is prepared. Were arranged in rows on both sides with a low height, and hexagonal reflective shades were arranged in two rows in the middle with a high height. As the light source lamp, a 270 W metal halide lamp, which consumes less power than the conventional lamp, was used. Table 1 shows the results of measuring the average illuminance, minimum illuminance, maximum illuminance, and uniformity (minimum illuminance / maximum illuminance) of the floor surface before and after replacement of the lighting fixture.

As is clear from Table 1, the average illuminance, minimum illuminance, maximum illuminance, and uniformity are all increased despite the use of a light source lamp with low power consumption after replacement. For example, good results were obtained even when 0.7) was considered. That is, it was possible to perform brighter and more uniform illumination while suppressing the running cost than before.

(Example 2)
The conventional lighting equipment installed in the gymnasium of the Marugame City Earthenware Gymnasium was replaced with the lighting equipment of the present invention, and the degree to which the illuminance on the floor of the gymnasium was improved was measured. As shown in the schematic plan view of FIG. 11 (a), the size of the gymnasium is 37m in length (Lb) and 27m in width (Wb). Arranged in a shape. As shown in a schematic side view in FIG. 11 (b), the ceiling surface of the gymnasium is inclined so that the center in the width direction is higher, and the lighting devices in the rows on the both sides (first row and sixth row from the left) The height (Hb1) of the lighting fixtures in these inner rows (second and fifth rows from the left) is 11 m, and these inner rows (third and fourth rows from the left) are 9 m in height (Hb1). The height (Hb3) of the lighting fixtures in the row is 13 m.

All of the conventional lighting fixtures used a metal halide lamp with a power consumption of 700 W as a light source lamp, and used a reflective shade with a circular opening (“SN-10034A”, manufactured by Toshiba). When this lighting fixture is replaced with a new lighting fixture, three types of polygonal shape of the opening of the reflecting shade are prepared: a dodecagonal shape, a dodecagonal shape and a 16-sided shape. (1st and 6th rows), dodecagonal shades are placed in the middle rows (2nd and 5th rows), and hexagonal shades are the largest rows ( (3rd and 4th rows). As the light source lamp, a 270 W metal halide lamp, which consumes less power than the conventional lamp, was used. Table 2 shows the results of measuring the average illuminance, minimum illuminance, maximum illuminance, and uniformity (minimum illuminance / maximum illuminance) of the floor surface before and after replacement of the lighting fixture.

As is clear from Table 2, the average illuminance, minimum illuminance, maximum illuminance, and uniformity all increased significantly, and the same effect as in Example 1 was obtained.

DESCRIPTION OF SYMBOLS 1 Lighting fixture 10 Light source part 12 Light source lamp 20 Reflective shade 22a-22e Annular body 24 Planar reflection part 30 Auxiliary reflection member

Claims

A lighting method for illuminating a facility by attaching a plurality of lighting fixtures to the ceiling of the facility,
The lighting fixture includes a light source part to which a light source lamp is attached and a reflective shade covering the light source lamp, and the reflective shade is polygonal in shape up and down by connecting a trapezoidal planar reflective part in an annular state in an inclined state. A plurality of annular bodies having a plurality of openings are provided in a plurality of stages so that the inclination angle of the planar reflecting portion changes vertically while matching the openings vertically.
A lighting method of attaching and illuminating a plurality of types of the lighting fixtures having different polygonal angles of the openings to the ceiling of the facility.
The lighting method according to claim 1, wherein a plurality of types of the lighting fixtures having different numbers of corners of the polygonal shape of the opening are combined and attached to the ceiling portion of the facility at different heights to illuminate.
A plurality of types of the lighting fixtures having different polygonal corner numbers of the openings are respectively provided on the ceiling of the facility so that the one with the larger number of corners is located on the center side of the facility with respect to the one with the smaller number of corners. The illumination method according to claim 1, wherein the illumination method is attached and illuminated.
4. The lighting method according to claim 3, wherein a mounting height of the lighting fixture having a large number of corners is set to be larger than a mounting height of the lighting fixture having a small number of corners.
The illumination method according to claim 1, wherein an auxiliary reflecting member for diffusing the illumination light of the light source lamp is disposed in the vicinity of the center of the lower end opening of the reflection shade.
A lighting facility with a plurality of lighting fixtures attached to the ceiling,
The lighting fixture includes a light source part to which a light source lamp is attached and a reflective shade covering the light source lamp, and the reflective shade is polygonal in shape up and down by connecting a trapezoidal planar reflective part in an annular state in an inclined state. A plurality of annular bodies having a plurality of openings are provided in a plurality of stages so that the inclination angle of the planar reflecting portion changes vertically while matching the openings vertically.
A facility with lighting in which a plurality of types of the lighting fixtures having different polygonal angles of the opening are combined with the ceiling portion of the facility and the height is changed.