JPH0321396Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a lighting device for a basement that utilizes natural light.

Conventionally, when using the basement as a living room, the fourth
As shown in the figure, a hollow moat 2 is formed in front of a basement 1, and a window opening 3 is provided in the wall of the building facing this.

However, the lighting structure by providing a dry moat has the drawback that the excavation work of the dry moat and the drainage equipment for rainwater flowing into the dry moat are costly. Also, because of the deep groove shape, it is difficult to obtain sufficient lighting due to the shadows of sunlight. Furthermore, since the window 3 is located at a position lower than the ground surface 12, there is a drawback that dust, dirt, etc. can easily enter through the window. Furthermore, it is not easy to bring in light into the building using skylights because the building is located above the basement.

In order to eliminate these drawbacks, some devices are designed to guide extraneous light above ground into the basement using a light guide duct. The light guiding device is a duct with a reflective member attached to its inner surface, and has a light receiving port at one end opening, a light emitting port at the other end opening, and the part of the light duct between them is buried underground. The direct light and sky diffused light taken in by the light receiving port are reflected and guided by the reflective member on the inner surface, and the light is emitted into the basement from the light emitting port, thereby illuminating the room.

According to this, large-scale earth and sand excavation work around the outer periphery of the basement and drainage equipment are completely unnecessary, and only simple piping work is required, so the equipment can be installed at a low cost.

In addition, since the system uses reflection within the conduit to guide external light, there are fewer restrictions due to conditions such as topography, surrounding environment, and house structure, compared to the conventional method of introducing light from a window. By arranging one end of the path at a location above ground where sufficient sunlight can be obtained, any location within the basement can be brightly illuminated very efficiently over a long period of time. Furthermore, since the lighting is natural light, there is no discomfort associated with artificial lighting, making the basement more comfortable to live in, and at the same time, it is possible to significantly save on lighting electricity costs. Examples of these basement light guide devices are shown in FIGS. 2 and 3. In FIG. 2, the transparent cover 6 on the light-receiving side is dome-shaped. FIG. 3 shows a part extending vertically above the ground from an overhanging part 14 formed by partially extending the side wall 13 of a basement, and a light guide device 4 is installed in this part.

Below, an embodiment of the present invention will be described with reference to the drawings. In FIG.
is made into a vertical surface, an inclined tube end wall 5' is provided, and a flat highly reflective material 8 is pasted here as well.
The light reflected here is introduced into the basement 1 through an opening provided in the basement side wall. The height of the light emitting port 10 with respect to the basement floor is adjusted to the position 9 of the required height of the window. A highly reflective material 8 is adhered to the entire inner surface of the conduit of the light guiding device 4.

Through the light guiding duct having the above structure, the external light entering from the light receiving port 7 travels while being repeatedly reflected on the inner surface of the conduit 5, and the light thus guided enters the basement 1 through the light emitting port 10 and illuminates the inside of the basement. . The inclined wall 5' of the light receiving port is inclined at about 45 degrees, and a reflective surface is provided below it at the same angle, so that the light can be passed through the light guide device 4 while staying in the basement 1, just like a normal window. This allows you to enjoy the beautiful scenery, and together with natural lighting, it can greatly improve the livability of the basement. The light guide device 4 includes a highly reflective material 8 on the inner wall of an elbow-shaped conduit 5 formed of a metal plate, glass fiber reinforced resin, etc., such as a thin silver mirror with a thickness of less than 1 mm, or a plastic film coated with aluminum. Aluminum foil or the like is suitable. In addition, the surfaces of the transparent cover 6 on the light receiving side and the transparent cover 11 on the light emitting side may be coated with _sio2 , magnesium fluoride, etc., or a porous silica layer may be provided by selective elution of the glass surface. If anti-reflection treatment is performed, reflection loss of the transparent cover during light reception and light emission can be suppressed to a low level, and external light can be used effectively.

The greatest feature of the present invention is that it allows evacuation from the basement to the ground via the light guide device 4. The light duct has a relatively large diameter,
It is possible for people to pass through the duct. However, since the reflective member 8 is pasted on the surface inside the light duct, the surface slips and it is difficult to pass through. If you try to force the passage through, problems such as scratching the surface of the reflective member 8, which requires high reflectivity, will occur. In the figure, the transparent cover 6 on the light receiving side and the transparent cover 11 on the light emitting side are both openable and closable glass covers, and an evacuation ramp 17 is installed inside the duct as shown in the figure. Moreover, this evacuation ramp 17 is configured to be removable.

In other words, the light guide device of the present invention can guide external light into the basement using a conduit lined with a light reflecting material, and the light receiving port is provided in a plane substantially perpendicular to the ground. , you can enjoy the same view of the outside as you would from a normal window while staying inside the basement. Additionally, an evacuation ramp is provided within the light guiding duct at a position extending from the light receiving port to the light emitting port. Therefore, this light guiding duct can be used as an escape exit in case of abnormality inside the basement. The light receiving port is almost perpendicular to the ground and allows you to see the outside conditions, so even if an abnormal situation occurs outside, you can look out the window and make appropriate decisions and take actions after assessing the outside situation. This is possible. This has the effect of allowing the user to quickly escape after confirming safety through the evacuation ramp provided in the light guiding duct.

[Brief explanation of drawings]

FIG. 1 is a vertical side view showing the light guide device of the present invention, and FIGS. 2, 3, and 4 are vertical side views showing conventional lighting conditions. In the drawing, 1...basement, 4...light guide device, 5, 5'...
Pipe line, 6, 11...transparent cover, 8...high light reflective material,
12... Ground, 14... Overhang, 17... Tarap.

Claims (1)

[Scope of utility model registration request] In a light guide device, a duct is provided that penetrates from the side wall of the basement to the ground, and reflective material is pasted on almost the entire surface of the duct to guide natural light from the ground into the basement. A light guide characterized by having an openable and closable transparent cover provided on a light receiving port and a light emitting port of the duct, and an evacuation ramp provided in the light guide duct extending from the light receiving port of the duct to the light emitting port. Device.