JP2002118279A - Pavement tile incorporating solar battery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pavement tile incorporating a solar battery that is not broken nor deteriorated even when the battery is deformed or thermally strained by loads. SOLUTION: This pavement tile is provided with a pavement tile (1) at least the upper surface of which is made of a light-transmissive material, and in which a cavity is formed and the solar battery (2) which is held in the cavity by means of elastic bodies, such as helical springs (3) or a plastic or rubber supporting base (4), etc.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tile for laying a road with a built-in solar cell, and more particularly, to the possibility of destruction or deterioration of the solar cell by forming a cavity for holding the solar cell therein. The present invention relates to a tile for laying a road in which the number of tiles is reduced.

[0002]

2. Description of the Related Art Japanese Patent Laid-Open No. 9-18041 discloses a tile for laying a road in which a solar cell is built. As shown in a partial cross-sectional view of FIG. 8, the conventional road laying tile incorporating a solar cell includes a solar cell 12 inside a road laying tile 11 made of a light-transmitting bulletproof glass or bulletproof plastic. Is embedded. In many cases, there is no obstacle above the road that blocks sunlight. By utilizing this existing public space, efficient solar power generation becomes possible.

[0003]

The conventional tile for laying a road with solar cells shown in FIG. 8 has a structure in which solar cells are embedded therein. For this reason, when the tile is deformed under the load of a pedestrian or a vehicle, the solar cell is also deformed at the same time, which may be destroyed or deteriorated. In addition, since the temperature rises due to direct sunlight during the daytime and the temperature decreases at nighttime, a large temperature difference occurs between daytime and nighttime. As a result, the material of the tile and the material of the solar cell may expand and contract, and the solar cell may be damaged or deteriorated due to thermal distortion due to a difference in thermal expansion coefficient between the two.

Accordingly, it is an object of the present invention to provide a solar cell built-in road laying tile which is free from the possibility of destruction or deterioration of the solar cell due to deformation due to load or thermal strain.

[0005]

A road laying tile with a built-in solar cell according to the present invention for solving the above-mentioned problems of the prior art is a road laying having at least an upper surface made of a translucent material and having a cavity formed therein. And a solar cell held in the cavity of the road laying tile to prevent the distortion generated in the road laying tile from being transmitted to the internal solar cell due to a load or temperature change. , So as to prevent destruction of the solar cell.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to a preferred embodiment of the present invention, a solar cell is held via an elastic body such as a helical spring or a rubber or plastic support in a cavity of a road laying tile. As a result, the quake resistance to the vibration caused by the traffic of the vehicle is also improved.

According to another preferred embodiment of the present invention,
Since the solar cell is covered with the waterproof coating, deterioration of the solar cell when water permeates through a crack in the tile for laying the road is prevented.

According to still another preferred embodiment of the present invention, the upper surface of the tile for laying a road is provided with a partial spherical surface and a sawtooth having both a function of concentrating sunlight and a function of preventing a pedestrian or a vehicle from sliding. The power generation efficiency is increased by forming irregular surfaces such as a convex surface and a random surface.

[0009]

FIG. 1A is a partial cross-sectional view showing the structure of a tile for laying a road with a built-in solar cell according to an embodiment of the present invention. It is a helical spring. The road laying tile 1 is made of translucent plastic or glass, and has a rectangular parallelepiped shape. A cavity is formed inside the road laying tile 1. A solar cell 2 is held inside the cavity by upper and lower helical springs 3.

The tile for laying a road with a built-in solar cell according to this embodiment is laid on a sidewalk. The upper surface of the road laying tile 1 is colored as necessary. The sunlight entering the upper surface of the road laying tile 1 from above is transmitted through the translucent upper surface and enters the solar cell 2.
The electric power generated by the solar cell 2 is taken out to the outside via electric wires (not shown).

Since the solar cell 2 is supported in the cavity by the helical spring 3, even if the tile 1 for laying the road is deformed by the load of a pedestrian or a vehicle or by thermal expansion / contraction.
This deformation is not transmitted to the solar cell 2. For this reason, the destruction and deterioration of the solar cell 2 are effectively prevented. Further, since vibration applied to the road laying tile 1 from the outside is absorbed by the helical spring 3 supporting the solar cell 2, the solar cell 2 is also prevented from being broken or deteriorated by the vibration. .

FIG. 1B is a partial sectional view showing the structure of a road-laying tile incorporating a solar cell according to another embodiment of the present invention. In this figure, components denoted by the same reference numerals as (A) are the same components as those already described with respect to (A). A cavity is formed inside the road laying tile 1, and a solar cell 2 is held by left and right helical springs 3 inside this cavity.

FIG. 1C is a partial cross-sectional view showing the structure of a tile for laying a road with a built-in solar cell according to still another embodiment of the present invention. In this figure, components denoted by the same reference numerals as (A) are the same as those already described with respect to (A). A hollow is formed inside the road laying tile 1, and a solar cell 2 is held by vertical and horizontal helical springs 3 inside this hollow. In this embodiment, as described above in (A), the support is maintained even if one or two helical springs are broken.
As compared with the embodiment shown in FIG.

FIG. 2 is a partial sectional view showing the structure of a tile for laying a road with a built-in solar cell according to still another embodiment of the present invention. In this figure, components denoted by the same reference numerals as those in FIG. 1 are the same as those already described with reference to FIG. In this embodiment, a groove is formed on the inner wall surface of the road laying tile 1, and both ends of the solar cell 1 are held in the groove via a support 4 made of an elastic material such as rubber or plastic. The deformation of the road laying tile 1 and the vibration transmitted to the road laying tile 1 from the outside are absorbed by the elastic body 4 and are not transmitted to the solar cell 1.

FIGS. 3A, 3B, and 3C are partial cross-sectional views showing the configuration of a road-laying tile incorporating a solar cell according to another embodiment of the present invention. In each figure, the components denoted by the same reference numerals as those in FIG. 1 are the same components as those already described with reference to FIG. In these embodiments, the support bases 5a, 5b, 5 made of an elastic material such as rubber or plastic are provided on the bottom surface of the cavity of the road laying tile 1.
c is fixed by an adhesive, and the solar cell 2 is fixed to the top of these supports by the adhesive. Deformation of the road laying tile 1 or the external use of this road laying tile 1
Is transmitted to the support 5a made of an elastic material,
It is absorbed by 5b and 5c and is not transmitted to the solar cell 1.

FIG. 4 is a partial sectional view showing the structure of a tile for laying a road with a built-in solar cell according to another embodiment of the present invention. In this figure, components denoted by the same reference numerals as those in FIG. 1 are the same as those already described with reference to FIG. In this embodiment, a trapezoidal support 5d made of an elastic material such as rubber or plastic is fixed to the bottom of the cavity of the road laying tile 1 with an adhesive, and the solar cell 2 is mounted on the top of the support 5d. Are fixed by an adhesive.

Further, the solar cell 2 and the support 5d for supporting the solar cell 2 are covered with a waterproof protective layer 6 made of epoxy resin or the like. As a result, even if cracks occur on the upper surface of the road laying tile 1 and rainwater enters the cavity,
The solar cell 2 covered with the waterproof protective layer 6 cannot be reached, and the deterioration of the solar cell 2 is prevented.

FIG. 5 is a partial sectional view showing a structure and an assembling method of a tile for laying a road with a built-in solar cell according to still another embodiment of the present invention. In this embodiment, the road laying tile 1 is divided into an opaque lower concave portion 1a and a translucent upper lid portion 1b. A support 7 made of an elastic material such as plastic or rubber is fixed to the inner surface of the lower concave portion 1a by an adhesive. An adhesive is applied to the support 7, and the solar cell 2 is placed from above on the support 7 and fixed by solidifying the adhesive. Finally, the light-transmitting upper lid 1 is provided on the left and right side walls of the light-impermeable lower recess 1a.
b is fixed by an adhesive.

The deformation of the upper cover 1b and the lower recess 1a of the road laying tile and the vibration transmitted from the outside to the road laying tile are absorbed by the support 7 made of an elastic material, and the solar cell 1 Is not transmitted to

FIG. 6 is a partial sectional view showing the structure of a road laying tile incorporating a solar cell according to another embodiment of the present invention. In this embodiment, a translucent material having both a function of concentrating sunlight and a function of stopping a pedestrian or a vehicle on the upper surface of a translucent road laying tile 1 incorporating a solar cell 2 is provided. An uneven surface is formed. FIG. 6A shows an example in which a partial spherical surface 8a such as a hemispherical surface is formed of a translucent material.
(B) shows an example in which the serrated surface 8b is formed, and (C) shows an example in which the random surface 8c is formed.

The sunlight rays incident on the translucent uneven surfaces 8a, 8b, 8c formed on the translucent upper surface of the road laying tile 1 are refracted by these uneven surfaces as exemplified by arrows. Then, the light passes through each uneven surface and the upper surface of the road laying tile 1 and enters the solar cell 2 supported by the support 5a.

FIG. 7 is a partial sectional view showing the structure of a translucent tile for laying a road with a built-in solar cell according to still another embodiment of the present invention. In this embodiment, the upper surface of the road laying tile 1 containing the solar cell 2 is covered with a cover 9 made of a transparent plastic or glass. Both ends of the cover 9 are curved, and refract the sunlight rays incident thereon to make them incident on the solar cell installed in the center. As a result, the amount of incident light on the solar cell increases, and the amount of power generation increases.

[0023]

As described above in detail, the tile for laying a road with a built-in solar cell according to the present invention has a configuration in which the solar cell is held in a cavity of the tile for laying a road having at least an upper surface that is translucent. Therefore, the distortion generated in the tile for laying the road due to the load or the temperature change by the pedestrian or the vehicle is not transmitted to the solar cell, and the destruction and deterioration of the solar cell are effectively prevented.

According to a preferred embodiment of the present invention, the solar cell is provided with a helical spring in a cavity of a road laying tile,
Since it is configured to be held via an elastic body such as a support base made of rubber or plastic, vibration resistance to vibration generated by a vehicle or the like is improved.

According to still another preferred embodiment of the present invention, the translucent upper surface of the tile for laying a road has both a function of concentrating sunlight and a function of preventing a pedestrian or a vehicle from sliding. Since the uneven surface such as a partial spherical surface, a sawtooth surface, and a random surface is formed, there is an advantage that the power generation efficiency is increased by the light condensing function.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view showing a configuration of a tile for laying a road with a built-in solar cell according to an embodiment of the present invention.

FIG. 2 is a partial cross-sectional view illustrating a configuration of a tile for laying a road with a built-in solar cell according to another embodiment of the present invention.

FIG. 3 is a partial sectional view showing a configuration of a tile for laying a road with a built-in solar cell according to still another embodiment of the present invention.

FIG. 4 is a partial cross-sectional view illustrating a configuration of a tile for laying a road with a built-in solar cell according to still another embodiment of the present invention.

FIG. 5 is a partial cross-sectional view showing a structure and an assembling method of a tile for laying a road with a built-in solar cell according to still another embodiment of the present invention.

FIG. 6 is a partial sectional view showing a configuration of a tile for laying a road with a built-in solar cell according to still another embodiment of the present invention.

FIG. 7 is a partial cross-sectional view showing a configuration of a tile for laying a road with a built-in solar cell according to still another embodiment of the present invention.

FIG. 8 is a partial cross-sectional view illustrating a configuration of a conventional tile for laying a road with a built-in solar cell.

[Explanation of symbols]

 Reference Signs List 1 tile for road laying 2 solar cell 3 helical spring 4,5a-5d, 7 elastic support base 6 waterproof protective layer 8a-8c unevenness which has both light-collecting function and non-slip function 9 cover

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Masaki Kosugi 1-10-1 Shinsayama, Sayama-shi, Saitama Honda Engineering Co., Ltd. F-term (reference) 2D051 AB03 DA01 DB04 DC01 2D064 AA01 AA22 CA01 CA02 DA08 GA03 HA14 HA27 5F051 BA05 BA18 HA11 JA02 JA09

Claims (7)

[Claims] 1. A road laying tile having at least an upper surface made of a translucent material and having a cavity formed therein, and a solar cell held in the cavity of the road laying tile. A road laying tile with a built-in solar cell, characterized in that: 2. The road laying tile according to claim 1, wherein the solar cell is held in a cavity of the road laying tile via an elastic body. 3. The solar cell built-in solar cell according to claim 2, wherein the elastic body is a helical spring stretched between the solar cell and the inner wall surface of the cavity of the road laying tile. Road laying tiles. 4. The road with a built-in solar cell according to claim 3, wherein the elastic body is a support base made of plastic or rubber disposed on an inner wall surface of the cavity of the road laying tile. Laying tiles. 5. The tile for laying a road with a built-in solar cell according to claim 1, wherein the solar cell is covered with a waterproof coating. 6. The road laying tile according to claim 1, wherein an uneven surface having both a function of concentrating sunlight and a function of preventing a pedestrian or a vehicle from sliding is formed on an upper surface of the road laying tile. A road laying tile with a built-in solar cell, characterized in that: 7. The road laying built-in solar cell according to claim 6, wherein the uneven surface of the road laying tile is one of a partial spherical surface, a sawtooth surface, and a random surface. tile.