JP2003063359A - Windshield glass and glass structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a windshield glass and a glass structure capable of effectively removing the attached moisture without sliding of a wiper. SOLUTION: A windshield glass 1A is provided with a glass 2 such as a reinforced glass, a shatterproof glass, and a porous structure body 3 having see-through with transparency. The porous structure body 3 is arranged on the whole surface of a second face 22 of the glass 2 by bonding, using a transparent adhesive. The surface of the porous structure body 3 is exposed to an outdoor spacing Eout. The porous structure body 3 has permeability by having a plenty of pores 4 communicating with each other (communicating pores). The porous structure body 3 has, for example, 20-30 communicating pores 4 per 25 mm long, and is formed of polyurethane form with thickness of about 20 mm or less than.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glass structure, and more particularly to a structure of a windshield glass (windshield) used in vehicles such as automobiles.

[0002]

2. Description of the Related Art In a conventional automobile, a windshield glass is constructed by fitting tempered glass or laminated glass into a sheet metal opening of a body including a front pillar. When water drops adhere to the surface of the windshield glass due to rainfall or splashes, the wiper (windshield wiper) slides on the surface of the windshield glass to wipe off the adhered water drops, and the driver The forward visibility of is secured.

[0003]

However, in the wiping of water drops by sliding the wiper, the water drops can be wiped only within the slidable range of the wiper, and
When the rainfall is heavy, the wiper slide cannot catch up, so that there is a problem that sufficient front visibility cannot be secured.

The present invention has been made in order to solve the above problems, and obtains a windshield glass and a glass structure capable of effectively removing the attached water without the sliding of the wiper. The purpose is.

[0005]

[Means for Solving the Problems] Claim 1 of the present invention
The windshield glass described in 1) is a glass having a first surface on the indoor space side of a vehicle and a second surface on the outdoor space side, and is disposed on the second surface of the glass exposed to the outdoor space, and is water-permeable. And a material having a see-through property.

The windshield glass according to claim 2 of the present invention is the windshield glass according to claim 1, wherein the material is a transparent porous structure having a large number of communicating holes, And a transparent fiber lump.

Further, in the glass structure according to claim 3 of the present invention, the glass having a first surface and a second surface and the glass structure which is exposed to the outside space and is disposed on the second surface of the glass are water-permeable. And a transparent material.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1. FIG. 1 is a cross-sectional view showing the structure of windshield glass 1A according to the first embodiment of the present invention. Windshield glass 1A
A glass 2 (conventional windshield glass) such as tempered glass or laminated glass, and a transparent porous structure 3 having transparency are provided. The glass 2 has a first surface 21 on the indoor space Ein side of the automobile and a second surface 22 on the outdoor space Eout side. The porous structure 3 is arranged on the entire surface of the second surface 22 of the glass 2 by bonding using a transparent adhesive or the like. The surface of the porous structure 3 is exposed to the outdoor space Eout. The porous structure 3 has water permeability by having a large number of holes (communication holes) 4 which communicate with each other.

If the thickness D1 of the porous structure 3 is too large,
And, if the diameter of the communication hole 4 is too small, the transparency is deteriorated. Further, if the number of the communication holes 4 is too small, the water permeability decreases. Therefore, in order to ensure appropriate transparency and water permeability, the porous structure 3 has, for example, 2 per 25 mm in length.
Has about 0 to 30 communication holes 4 and a thickness D1 of 20 mm
It is desirable to use polyurethane foam or the like to a degree or less. Here, the number of the communication holes 4 existing per length of 25 mm is 25 mm in length at an arbitrary position of the photograph by taking a same-size photograph of the porous structure 3.
It is measured by drawing a straight line and counting the number of the communication holes 4 existing on the straight line. The material of the porous structure 3 is not limited to the above polyurethane resin,
It may be a resin such as polystyrene or polyolefin.

As described above, according to the windshield glass 1A of the first embodiment, the porous structure 3 having transparency and water permeability is arranged on the entire second surface 22 of the glass 2. There is. Therefore, the water adhered to the surface of the windshield glass 1A due to rainfall or the like does not become granular water droplets on the surface of the porous structure 3 and the porous structure 3
Penetrates inside. Then, it flows down inside the porous structure 3 by its own weight and is discharged to the outside from the lower end side of the porous structure 3. Therefore, it is possible to effectively remove the moisture adhering to the glass surface without sliding by the wiper as in the conventional case.

Embodiment 2. FIG. 2 is a cross-sectional view showing the structure of windshield glass 1B according to the second embodiment of the present invention. Windshield glass 1B is glass 2
And a fibrous lump 5 that is transparent and transparent. The fiber lumps 5 are arranged on the entire surface of the second surface 22 of the glass 2 by bonding using a transparent adhesive or the like. The surface of the fiber lump 5 is exposed to the outdoor space Eout. The fiber lump 5 is a lump of short fibers and has water permeability.

If the thickness D2 of the fiber lumps 5 is too thick and the density is too large, the transparency is lowered. Further, if the density is too low, the water permeability will decrease. Therefore, in order to ensure appropriate transparency and water permeability, the fiber lumps 5 are made of, for example, glass fibers having a shielding rate of about 100% or less and a thickness D2 of about 10 mm or less. It is desirable to do. Here, the shielding rate (%) is given by the formula of (total projected area of fibers used in fiber lumps / area occupied by fiber lumps) × 100. The material of the fiber lumps 5 is not limited to the above glass fibers, and may be synthetic fibers such as polyester and polyamide.

As described above, according to the windshield glass 1B of the second embodiment, the transparent and water-permeable fiber lumps 5 are arranged on the entire second surface 22 of the glass 2. . Therefore, the water attached to the surface of the windshield glass 1B due to rainfall or the like will not be absorbed into the fiber lumps 5.
Permeates into the inside of the fibrous lump 5 without forming granular water droplets on the surface. Then, it flows down inside the fiber lump 5 by its own weight and is discharged to the outside from the lower end side of the fiber lump 5. Therefore, it is possible to effectively remove the moisture adhering to the glass surface without sliding by the wiper as in the conventional case.

Embodiment 3. In the third embodiment, modified examples of the first and second embodiments will be described.

The windshield glass 1A, 1B can be used not only as a windshield glass for a front window of an automobile but also as a windshield glass for a side window or a rear window.

The glass structure of the windshield glasses 1A and 1B can be used not only as a windshield glass for vehicles such as automobiles and railroads but also as a glass structure for show windows of stores and sashes of houses.

[0017]

According to the first aspect of the present invention, the moisture adhering to the surface of the windshield glass due to rainfall or the like does not form granular water droplets on the surface of the water-permeable material and its material Penetrates inside. And
The inside of the material flows down by its own weight and is discharged to the outside. Therefore, it is possible to effectively remove the moisture adhering to the glass surface without sliding by the wiper as in the conventional case.

According to the second aspect of the present invention, both the transparent porous structure having a large number of communicating pores and the transparent fiber lump have water permeability and transparency. Therefore, the windshield glass according to claim 1 can be configured by using these materials.

According to the third aspect of the present invention, when the glass structure is used in such a manner that the first surface is the surface on the indoor space side and the second surface is the surface on the outdoor space side,
Moisture attached to the surface of the glass structure due to rainfall or the like penetrates into the material without forming granular water droplets on the surface of the material having water permeability. Then, the inside of the material flows down by its own weight and is discharged to the outside. Therefore, it is possible to effectively remove the water adhering to the surface of the glass structure without hindering the view by the water droplets.

[Brief description of drawings]

FIG. 1 is a sectional view showing a structure of a windshield glass according to a first embodiment of the present invention.

FIG. 2 is a sectional view showing a structure of a windshield glass according to a second embodiment of the present invention.

[Explanation of symbols]

1A, 1B windshield glass 2 glass 3 Porous structure 4 communication holes 5 Fiber lumps 21 First side 22 Second side

Claims (3)

[Claims] 1. A glass having a first surface on the indoor space side of a vehicle and a second surface on the outdoor space side, and a glass that is exposed to the outdoor space and disposed on the second surface of the glass, and is water-permeable. And a windshield glass having a transparent material. 2. The windshield glass according to claim 1, wherein the material is either a transparent porous structure having a large number of communicating holes or a transparent fiber lump. 3. A glass structure comprising: a glass having a first surface and a second surface; and a material which is exposed to an external space and is disposed on the second surface of the glass and which has water permeability and transparency. .