JPS634741Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a daylighting device.

2. Description of the Related Art In large buildings such as factories, warehouses, gymnasiums, and other general buildings, daylighting devices are used to bring in natural light indoors in order to save power consumption and maintain indoor brightness.

Figure 1 shows an example of a conventional daylighting system, in which a part of the roof A of a building is opened, and a frame B is connected and fixed to a roof girder material or other appropriate girder material so as to surround this opening. A daylighting glass C reinforced with metal wire is installed at the bottom, and a daylighting body D is installed at the bottom of the frame B.
If there is a ceiling, the body D extends below the ceiling.

The connecting parts between the roof A and the pedestal B, and the pedestal B and the glass C are closely connected and treated to prevent rain from entering the room.

In the above-mentioned daylighting device, natural light is taken in through the glass C and guided by the daylighting body D to reach the indoor area, but because the light rays are unidirectional in the direction of entry due to the body D, the irradiation range indoors is limited to a certain area. Since the area around the irradiation area is bright and the light does not reach the entire indoor area, multiple lighting devices are required.

Further, in the spring and summer seasons when sunlight is strong, the irradiation range and its surroundings become high temperature, which has the disadvantage that the entire indoor room temperature becomes high.

The present invention is based on the conventional lighting device as mentioned above.
The purpose of the present invention is to provide a daylighting device that brightens indoors in the form of indirect illumination by dispersing light taken in from glass in a horizontal radial direction.

Another object of the present invention is to provide a lighting device that can directly direct a portion of the light into the room.

A further object of the present invention is to provide a lighting device that can prevent indoor temperature rise by dispersing the introduced light.

An embodiment of the present invention will be described in detail below with reference to the drawings.

In FIGS. 2 and 3, the lighting glass 3 is installed on the pedestal 2 fixed above the opening of the roof 1, and the lighting body 4 is vertically connected to the lower part of the pedestal 2, similar to the conventional device. , in this invention, the lighting trunk 4
A reflective member 5 is provided inside the lower part of the body 4.
A lighting window 6 is formed on the peripheral surface, and a through hole 7 is formed in the reflective member 5.
It is characterized by having a hole.

The reflecting member 5 is formed into a rectangular pyramid shape by four reflecting plates 8 made of a mirror or a metal plate with good light reflection efficiency, and the lighting window 6 is formed at a position corresponding to each reflecting plate 8. has been done.

Incidentally, the lighting body 4 may have either a rectangular cylinder or a cylindrical shape.

The lighting device of the present invention has the above configuration, and the natural light incident from the lighting glass 3 passes through the interior of the body 4 and hits the reflecting member 5, and each reflecting plate 8 forming the reflecting member 5
The light is reflected in the horizontal radial direction, and each daylighting window 6
The light passes through the room, hits the ceiling and walls, and illuminates the entire room as if it were indirect lighting. Further, a part of the light incident from the lighting glass 3 passes through the through hole 7 and directly illuminates the downward direction. In this case, since the amount of light is small, it will not cause a rise in temperature.

Since the direction of light irradiation is determined by the incident angle and the reflection angle, it is desirable to form the reflective member 5 after calculating the inclination angle of each reflective plate 7 that reflects the light in advance depending on the indoor situation.

As mentioned above, natural light is dispersed in the horizontal radiation direction by the reflecting member 5, so the irradiation range is not concentrated in one part, making the entire indoor area brighter, and the dispersion of light prevents a rise in indoor temperature. This is something that can be done.

[Brief explanation of the drawing]

Fig. 1 is a schematic cross-sectional view of a conventional lighting device, Fig. 2 is a schematic cross-sectional view of the lighting device of the present invention, and Fig. 3 is an enlarged perspective view of the main part with a part broken away. 1 is a roof, 2 is a stand, 3 is a lighting glass, 4 is a lighting body, 5 is a reflecting member, 6 is a lighting window, and 7 is a through hole.

Claims (1)

[Scope of utility model registration request] In a lighting device in which a lighting glass 3 is installed on a pedestal 2 fixed to an opening of a roof 1, and a lighting body 4 is vertically connected to the lower part of the pedestal 2, a lower part of the inside of the lighting body 4 is provided.
A reflecting member 5 in which a reflecting plate 8 made of a mirror, a metal plate, etc. is formed into a square pyramid shape is installed, and a lighting window 6 is formed on the circumferential surface of the body 4 at a position corresponding to each reflecting plate 8. A lighting device characterized in that a through hole 7 is bored in the center of the lighting device.