JPH05225811A - Lighting system - Google Patents

Abstract

PURPOSE:To provide a lighting system which allows safe and easy maintenance without increasing cost. CONSTITUTION:A natural illumination part 2 which takes in a natural light is formed on the ceiling of a construction structure A and a half mirror 5 is attached to the natural illumination part 2. In the daytime, illumination is provided by a natural light incident through the half mirror 5 in the natural illumination part 2. In the nighttime, illumination is provided by using an illumination equipment 4 provided at the bottom to irradiate light to the half mirror 5 to obtain a reflected light from the half mirror 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting system that illuminates by using natural light in the daytime.

[0002]

2. Description of the Related Art An illumination system using a high-intensity discharge lamp is mainly used in a building having a high ceiling, and the lower part is directly illuminated from the ceiling surface. In this case, the illuminating device such as the high-intensity discharge lamp is installed by being directly attached to or suspended from the ceiling surface.

By the way, there is a problem that if the illumination using the illumination device such as the high-intensity discharge lamp is performed day and night, the power consumption becomes considerably large. Therefore, in order to reduce power consumption, as shown in FIG. 2, a lighting unit 2 such as a lighting window is formed on the ceiling 1 of the building structure A, and natural light taken in from the lighting unit 2 is used for daytime illumination. And a lighting system that performs lighting by using the lighting device 4 such as a high-intensity discharge lamp at night. In such an illumination system, a dome-shaped lighting member 3 formed of a translucent material is attached to the upper part of the lighting unit 2 to prevent rain and wind from entering, and the lighting unit 2 becomes a decoration at night. The design is good. 2A shows a case where the lighting device 4 is installed on the outdoor side of the daylighting section 2, and FIG. 2B shows a case where the lighting device 4 is installed inside the daylighting window 2.

[0004]

However, when the lighting device 4 is installed directly on the ceiling of the building structure A or by the hanging system as described above, a scaffold is assembled when the lighting device 4 is maintained. However, there is a problem in that maintenance is not possible easily, and since the work is performed at a high place, there is a problem in safety. Therefore, as a method of improving this point, it is conceivable to make the lighting device 4 movable up and down. However, in this case, there is a problem that the cost increases.

The present invention has been made in view of the above points, and an object of the present invention is to provide a lighting system which enables safe and easy maintenance without increasing the cost. .

[0006]

In order to achieve the above-mentioned object, the present invention forms a daylighting section for taking in natural light on the ceiling of a building structure, and attaches a half mirror to this daylighting section. The illumination is performed with natural light incident through the half mirror, and at night, the illumination device installed below illuminates the half mirror with light and the reflected light from the half mirror is used for illumination.

[0007]

According to the present invention, as described above, at night, the light of the lighting fixture installed below is reflected by the half mirror to perform illumination, so that the illumination can be performed from the ceiling without installing the illumination device on the ceiling. Since it is possible to obtain the same lighting condition as when performing it, and because the lighting device can be installed in a low place, it is possible to eliminate the need to use an elevating device, prevent cost increase, and maintain in a low place. As a result, safe and easy maintenance is possible.

[0008]

FIG. 1 shows an embodiment of the present invention. Also in this embodiment, natural light taken from the daylighting section 2 of the ceiling 1 is used for illumination in the daytime. In the case of this embodiment, the half mirror 5 is attached to the lower part of the daylighting section 2, A plurality of lighting devices 4 such as a high-intensity discharge lamp that illuminates at night is installed in the lower part of the building structure A so that the respective half mirrors 5 are irradiated with respective lights. Here, the lighting device 4 may be installed at a place where maintenance can be easily performed, for example, a place where the floor surface or the wall surface is low. In addition, for example, when the building structure A is a station building or the like, as shown in FIG. 1, the building structure A may be installed on the roof of a stand provided in the station building, and in this case, the lighting device 4 is not conspicuous. Benefits are obtained.

The daytime illumination in the illumination system of this embodiment takes in natural light from the daylighting section 2 as shown in FIG. In this case, half mirror 5
Since the incident light is almost completely transmitted, it does not hinder the illumination by natural light. Needless to say, the illumination device 4 is turned off during the period when the illuminance by the natural light is sufficient.

At night, the lighting device 4 is turned on. At this time, the light from each illuminating device 4 is concentrated and applied to the half mirror 5. At this time, the half mirror 5 functions as a reflecting mirror, and the light from the lighting device 4 is reflected to the floor surface side as shown in FIG. By doing so, it is possible to obtain an illumination state that is substantially the same as when the illumination device 4 is installed on the ceiling 1. Therefore, since it is not necessary to install the lighting device 4 at a high place such as the ceiling 1 unlike the conventional case, maintenance can be performed safely and easily, and an elevating device or the like is not required. is there.

[0011]

As described above, the present invention forms a daylighting section for taking in natural light on the ceiling of a building structure, and attaches a half mirror to this daylighting section. In the daytime, natural light is incident through the half mirror of the daylighting section. In the night, the lighting fixture installed below illuminates the half mirror with light to illuminate with the reflected light of the half mirror. It is possible to obtain the same lighting condition as when illuminating from the ceiling without installing the illuminating device on the ceiling by illuminating the light reflected by the half mirror, and it is possible to install it in a place where the illuminating device is low. Therefore, it is not necessary to use an elevating device, the cost does not increase, and maintenance can be performed at a low place, so safe and easy maintenance is possible. .

[Brief description of drawings]

1A and 1B are explanatory views showing a lighting method in day and night according to an embodiment of the present invention, respectively.

2A and 2B are explanatory views showing a conventional illumination method, respectively.

[Explanation of symbols]

 A Building structure 1 Ceiling 2 Daylighting part 4 Lighting device 5 Half mirror

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazushige Nakai 1-1, Ohbukacho, Kita-ku, Osaka City West Japan Railway Company

Claims (1)

[Claims] 1. A lighting unit for taking in natural light is formed on a ceiling of a building structure, and a half mirror is attached to the lighting unit.
In the daytime, illumination is performed with natural light that is incident through the half mirror of the daylighting section, and at night, the lighting equipment installed below illuminates the half mirror with the reflected light from the half mirror. Lighting system.