JPH0130729Y2 - - Google Patents

Description

[Detailed description of the invention] "Field of industrial application" This invention relates to a device for introducing outdoor light into the basement of a building.

``Conventional technology'' Conventionally, when bringing in outdoor light into the basement of a building, a dry area is provided along the outer wall of the basement of the building, and an opening is provided in the basement facing this dry area. I'm going.

``Problem that the invention aims to solve'' However, with the above-mentioned means, as the position of the opening becomes lower than the ground level, less outdoor light reaches the opening, making it impossible to provide sufficient lighting. Ta.

Furthermore, even if there was sufficient lighting, the wall of the dry area blocked the front of the opening, making it impossible to get rid of the impression that the basement was sealed.

This idea was made in view of the above circumstances, and the purpose is to provide a lighting device for basements that can bring in sufficient outdoor light into the basement and also change the image of the basement. do.

``Means to solve the problem'' This idea covers the upper part of the dry area provided along the underground outer wall of the building, and is installed at an angle with the building side facing upward, so that it can be accessed from outside. A semi-transparent mirror is provided above the dry area on the side of the semi-transparent mirror to allow light to pass through toward the object side and reflect light directed toward the outdoors from the building side. A concave mirror is provided at the bottom of the dry area to reflect the light toward the semi-transparent mirror, and the light is tilted so that the building side faces downward. It includes a reflecting mirror that reflects light reflected downward into the dry area toward an opening in a basement provided adjacent to the dry area, and a screen made of ground glass provided in the opening in the basement. This is what happens.

``Function'' According to this invention, outdoor light passes through a semi-transparent mirror, is sequentially reflected by a concave mirror, a semi-transparent mirror, and a reflective mirror, reaches the opening in the basement, passes through a screen, and is introduced into the basement. Project the outdoor scenery on the screen.

"Example" Hereinafter, an example of this invention will be described with reference to FIGS. 1 to 3.

In these figures, 1 is the basement of the building, 2 is the basement exterior wall, 3 is the dry area provided adjacent to this basement 1, and 4 is the opening provided in the basement exterior wall 2 facing the dry area 3. Department.

At the top of this dry area 3, there is a semi-transparent mirror 5.
It is installed at an angle with the building side facing upward. As shown in FIGS. 3A and 3B, the semi-transparent mirror 5 is made by pasting strip-shaped films 5b at equal intervals on the inner surface of a transparent glass 5a (inner side of the dry area 3). It forms a reflective surface that reflects light directed toward the outdoors from the building side, and the portion to which the film 5b is not attached serves as a transmitting surface that allows light to pass through. This semi-transparent mirror 5
The areas of the reflective surface and the transmitting surface are each half of the entire semi-transparent mirror 5. Note that it is desirable to use a material with a high reflectance, such as an aluminum vapor-deposited polyester film, for the film 5b. Further, instead of forming the film 5b in a band shape, the reflective surface and the transmitting surface may be arranged alternately, as shown in FIG. 3C. Further, the semi-transparent mirror 5 may be formed by directly depositing aluminum on the surface of the transparent glass 5a, like a normal mirror, instead of pasting the film 5b.

A concave mirror 6 is attached to the outer wall 8 of the above-ground part of the building via a support device 7 at the upper part of the dry area 3 on the side of the semi-transparent mirror 5 attached to the upper part of the dry area 3 as described above. This support device 7 is
The direction of the concave mirror 6 can be moved up and down and left and right. In addition, this concave mirror 6
has a focal length that allows an image to be focused on the screen 10, as will be described later.

In addition, a reflecting mirror 9 is fixed to the lower part of the dry area 3 at a position facing the opening 4 and tilted so that the basement 1 side faces downward.

Further, the opening 4 has a screen 10 formed of ground glass attached to a frame 11 attached to the periphery of the opening 4.
is covered. This screen 10 can be moved from side to side in FIG. 1 within a frame 11, and can also be removed from the frame 11 to open and close the opening 4.

Based on the above configuration, this lighting device is capable of letting outdoor light into the basement 1 through the screen 10 and projecting the outdoor scenery on the screen 10. That is, as shown by the two-dot chain line with an arrow in FIG. The reflected light is reflected downward from the dry area 3 by the reflective surface of the semi-transparent mirror 5 (that is, the film surface 5b), and is further reflected by the reflective mirror 9 toward the screen 10. An image of an outdoor scenery is formed on a screen 10. The symbol A in FIG. 1 indicates an outdoor object, and the symbol B indicates the screen 1.
This shows an image of object A projected on 0.

In this way, according to this lighting device, the opening 4
Even if the screen 10 is located a considerable distance below the ground level, sufficient outdoor light can be brought into the basement 1, and the screen 10 can be seen from inside the basement 1.
When viewed, the outdoor scenery is projected in natural colors and with sufficient brightness, giving the same atmosphere as the room above ground. In addition, this device
Since the direction of the concave mirror 6 can be changed by the support device 7, the scenery projected on the screen 10 can be changed, and since the screen 10 can be moved back and forth, focusing can be easily performed. Moreover, since this device does not require any energy, there is no operating cost at all, and the equipment cost is also low. Note that the semi-transparent mirror 5, concave mirror 6, and reflective mirror 9 can be cleaned by opening the screen 10 and exiting to the dry area 3 through the opening 4.

``Effect of the invention'' As explained in detail above, this invention uses a concave mirror, a semi-transparent mirror, and a reflective mirror to reflect outdoor light toward the screen. This method has the effect of being able to fully incorporate outdoor scenery on the screen without requiring any artificial energy. Therefore,
By using this idea, it is possible to eliminate the conventional image of basements as being dark and closed, and create an atmosphere similar to that of underground rooms, which in turn allows for the use of basements. This has the effect of being able to expand the area.

[Brief explanation of the drawing]

1 to 3 are views showing an embodiment of this invention, FIG. 1 is an elevational view showing the overall schematic structure of this embodiment, FIG. 2 is a plan cross-sectional view taken from FIG. 1, FIG. 3 shows a semi-transparent mirror, in which A is a partial front view, B is a partial side view, and C is a partial front view showing another example of the semi-transparent mirror. 1...Basement, 2...Basement outer wall, 3...Dry area, 4...Opening, 5...Semi-transparent mirror, 6...Concave mirror, 9...Reflector, 10...Screen.

Claims (1)

[Scope of utility model registration request] A device for introducing outdoor light into a basement that is installed adjacent to a dry area along the basement exterior wall of a building and has an opening facing the dry area through the opening. It covers the upper part of the dry area and is provided at an angle with the building side facing upward, allowing light to pass from the outdoors toward the building and reflecting light going from the building toward the outdoors. A semi-transparent mirror,
Provided above the dry area on the side of the semi-transparent mirror,
A concave mirror that reflects light that has passed through the semi-transparent mirror and entered the dry area toward the semi-transparent mirror; The dry area further includes a reflecting mirror that reflects the light reflected downward by the semi-transparent mirror toward the opening of the basement, and a screen made of ground glass provided in the opening. Lighting device for basement.