JPH04289362A - Transparent roofing member - Google Patents

Abstract

PURPOSE:To constitute a light and transparent structure with arbitrary sizes at an arbitrary position, by mixing glassfiber having a specified difference of refraction index with polycarbonate resin for molding. CONSTITUTION:Glassfiber is mixed with polycarbonate resin to obtain a difference of refraction less than 0.02 to make a transparent tile 1. The shape of file 1 is free and formed are trough for rain 2, lower imposing parts 3, 4 with adjacent tiles, and fixing wire hole 5. And further, a hooking beam is formed at the back face as a unit. Necessary materials for construction of a roof, beams of tile, roof boards, etc., for instance, may be made by use of the same transparent materials. In this way, a light transparent structure with shock-proof and weather-proof ability can be used for the construction.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transparent roofing material, and more particularly to a transparent roofing material made of a polycarbonate resin composition reinforced by incorporating a transparent reinforcing filler.

0002

BACKGROUND OF THE INVENTION In houses and other buildings, there is an increasing demand for active use of natural lighting in order to save energy and improve the indoor atmosphere. Usually, consideration is given to making the windows larger to let sunlight into the building. Going one step further, many structures are now being adopted that allow sunlight to enter the interior of the building by providing an appropriate lighting structure on a portion of the roof.

[0003] Conventional roof lighting structures have been provided with skylights or with lighting sections made of glass tiles, transparent resin flat plates, corrugated plates, or the like. Although skylights can be made to be openable and closable, they are expensive and unsuitable for forming a lighting structure over a large area.

[0004] Glass tiles are heavy and, even if reinforced, have poor impact resistance due to their material nature, so special consideration must be taken during construction. In addition, flat plates, corrugated plates, etc. made of transparent resin require special consideration to prevent rain from collapsing with surrounding roofing materials, and have the disadvantage that it is difficult to achieve aesthetic harmony in terms of appearance. Furthermore, due to the lack of mechanical strength, it was necessary to consider some kind of reinforcing structure.

[0005] It is also known that a daylighting unit with a frame of a predetermined size is pre-produced in a factory and is attached to an appropriate location during roof construction. In such a method of using a ready-made daylighting unit, there are restrictions on the size and construction site, and it is difficult to arbitrarily form a daylighting roof of a desired size.

[0006] Ordinary roof tiles are usually specified by the number of tiles per predetermined area. When constructing a roof in combination with these tiles, if the ventilation structure and lighting structure were to be constructed from conventionally known materials, it was necessary to process compatible materials to predetermined dimensions on-site.

[0007]

SUMMARY OF THE INVENTION An object of the present invention is to provide a transparent roofing material that allows a daylighting roof structure of a desired size to be easily constructed at a desired location without any difficulty in construction.

[0008]

SUMMARY OF THE INVENTION The objects of the present invention are solved by a transparent roofing material molded from a polycarbonate resin containing a transparent reinforcing filler.

[0009]

Effects of the Invention The transparent roofing material according to the present invention is sufficiently reinforced by the action of the reinforcing filler, and can sufficiently withstand not only the construction process but also hail and other external impacts. Furthermore, since it is lightweight and has high impact resistance, it has good workability and the load applied to the structure is small. moreover,
It has excellent heat resistance, weather resistance, etc., and can be used as a transparent resin roofing material suitable for daylighting roof structures.

The transparent roofing material according to the present invention is a molded article whose basic resin is a polycarbonate resin composition, and its melting temperature is lower than that of glass. Therefore, it is easier to process than ordinary tiles or glass tiles, and manufacturing costs can be reduced. Further, when molding, complex shapes can be easily selected, and transparent roofing materials with arbitrary shapes and patterns can be obtained.

The polycarbonate resin used in the present invention maintains high transparency and also has high impact resistance. Furthermore, this impact resistance remains high even at low temperatures. It also maintains sufficiently high weather resistance even though it is exposed to harsh natural environments for long periods of time. It should be noted that it is possible to color it in any desired color relatively easily, and by adding an appropriate light color, it can be expected that colored lights such as blue, ivory, and orange will help create a unique mood.

According to the structure of the transparent roofing material according to the present invention, it can be easily applied to areas with a large surface area. In addition, since the strength is sufficient, a rectangular daylighting roof structure of a desired area can be easily constructed from a predetermined number of transparent roof materials having a fixed area as a unit. Furthermore, it is optional to arrange them alternately or in a predetermined combination in combination with ordinary opaque roofing materials.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be disclosed below with reference to the drawings showing embodiments of the invention. FIG. 1 shows an example of a transparent tile 1 using a polycarbonate resin mixed with a transparent reinforcing filler as the transparent thermoplastic resin. Although there are no restrictions on the shape, a rainwater flow section 2, a downward overlap section 3 with an adjacent tile, a downward overlap section 4, a nail hole 5 for fixing, etc. are formed.

FIG. 2 shows the back side of a similar roof tile. In addition to each element appearing in the surface view of FIG. 1, a hooking bar 6 is integrally molded.

The transparent tiles shown in FIGS. 1 and 2 have the same external shape and dimensions as standard tiles. Therefore, when forming a daylighting roof structure using such transparent tiles, any part of the entire roof can be targeted without restriction.

[0016] If the materials necessary for roof construction, such as tiled timbers and roofing boards, are also constructed using similar transparent materials,
It is convenient because it is possible to construct a lighting roof structure over a large area without any restrictions.

Commonly used polycarbonate resins are:
Usually, many have a refractive index of about 1.58. In addition to this polycarbonate resin, other suitable polycarbonate resins in the present invention include copolyester carbonate resins. A resin composition consisting of either a polycarbonate resin or a copolyester carbonate resin, or both, and containing other necessary additives can be used as the basic resin.

On the other hand, the refractive index of conventional glass is usually about 1.545, and the difference in refractive index between the two is large, which impairs transparency. The transparent reinforcing filler blended in the present invention has a refractive index of 1.576 to 1.58 in order to improve mechanical strength while maintaining transparency.
5, and a glass fiber whose refractive index difference with the base resin is within 0.02 is preferable. The component ratio is desirably about 1 to 60 parts by weight of glass fiber to 99 to 40 parts by weight of polycarbonate resin.

The reason for blending a glass filler with a refractive index difference of 0.02 or less in this way is to avoid the disadvantage of loss of transparency when added to a polycarbonate resin. As the material for the transparent roofing material of the present invention, the composition described in the patent application filed by the applicant on December 29, 1990, titled "Glass-reinforced polycarbonate resin composition" is used. be able to.

FIG. 3 shows an example of a roofing material formed as a corrugated sheet. In this case as well, it is made of polycarbonate resin containing a transparent reinforcing filler, and is formed in the same shape as a regular opaque roofing material. Although an example in which large peaks and valleys are combined with small peaks and valleys is shown here, the shape, color, presence or absence of a pattern, etc. of the waves are arbitrary. Furthermore, a flat plate without corrugations can also be used.

[0021] Since many of these roofing materials have larger dimensions than tiles, it is convenient for transparent roofing materials to be formed so that their working area is one integer fraction of that of standard roofing materials. Good.

[0022]

As described above, according to the transparent roofing material of the present invention, a lighting structure of any size can be easily formed in any part of the roof. Furthermore, by using a polycarbonate resin that is reinforced with a transparent reinforcing filler and has high weather resistance, we can obtain a transparent roofing material that satisfies the requirements for a lightweight and impact-resistant roofing material. Can be done.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the surface structure of a first embodiment of a transparent roofing material according to the present invention.

FIG. 2 is a perspective view showing the configuration of the back side of the first embodiment of the transparent roofing material according to the present invention.

FIG. 3 is a perspective view showing a second embodiment of the transparent roofing material according to the present invention.

[Explanation of symbols]

1 Transparent tiles 2 Rainwater flow section 3 Lower polymerization part 4 Upper polymerization part 5 Nail hole 6 Hanging bar

Claims (2)

[Claims] 1. A transparent roofing material characterized by being molded from a polycarbonate resin containing a transparent reinforcing filler. 2. A transparent roofing material, wherein the transparent reinforcing filler is a glass fiber having a refractive index difference of 0.02 or less with respect to a polycarbonate resin.