JPH07150711A - Lighting panel - Google Patents

Abstract

PURPOSE:To simply extract electric energy from the sunlight in a structure, eliminate the limitation on the installation position, and improve flexibility. CONSTITUTION:A lighting panel 9 arranged at the opening section of the roof of a structure is formed with a glass plate 11 and a see-through solar battery panel 13 fitted to the surface 1101 of the 11 facing the sun via a substrate layer 27. Many lighting holes 1701, 1901, 2701 allowing the sunlight to pass through are bored on the stainless base 17 and the amorphous silicon layer 19 of the see-through solar battery panel 13 and the substrate layer 27 respectively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a daylighting panel disposed in an opening of a roof of a structure.

[0002]

2. Description of the Related Art Solar cells convert light energy into electrical energy, and from the viewpoint of solving global environmental problems such as global warming problems, the widespread use of solar cells is an important issue that must be actively addressed. It is one of the challenges.
Among the solar cells, amorphous solar cells are slightly inferior in energy conversion efficiency to crystalline solar cells, but they are lightweight, suitable for mass production, and cheap in cost. ing. In the case of using such a solar cell to obtain electric energy in a building, conventionally, a pedestal is installed on a roof or a roof, and the solar cell is arranged on this pedestal.

[0003]

Therefore, in order to obtain electric energy using a solar cell, a stand for the solar cell is required, and it is necessary to secure a space for installing the stand, which results in cost reduction. There was a problem in terms of points and space. On the other hand, a daylighting panel, which is arranged in an opening of a roof of a structure and enables daylighting into the structure, is put to practical use. Conventionally, a colorless or colored transparent glass plate or the like is used as a daylighting panel, and the daylighting panel is generally a structure facing the south side so that particularly strong morning sunlight does not directly enter the inside of the structure. It is installed avoiding the roof part. And since such a daylighting panel takes in sunlight into a structure, it is often arranged originally in a place where sunlight energy is sufficiently received.

However, although the conventional daylighting panel receives the sunlight energy sufficiently, it does not fully utilize the received sunlight energy and merely passes the sunlight while blocking the wind and rain. . Further, since the conventional daylighting panel is installed avoiding the roof portion of the structure facing the south side, there is a problem that the installation place is restricted and the versatility cannot be enhanced. The present invention has been devised by paying attention to the amorphous solar cell, and an object of the present invention is to easily obtain electric energy from sunlight in a structure and to restrict the place of installation. An object of the present invention is to provide a daylighting panel that can be improved in versatility.

[0005]

In order to achieve the above-mentioned object, the present invention is a daylighting panel which is arranged in an opening of a roof of a structure and which enables daylighting into the structure. A conductive substrate forming an electrode, an amorphous silicon layer formed on the conductive substrate, a transparent electrode formed on the amorphous silicon layer to form a + electrode, and the transparent electrode made of a light-transmissive member. An upper protective layer formed on the upper surface and a lower protective layer formed under the conductive substrate are provided, and a lighting hole which allows passage of sunlight from the amorphous silicon layer to the lower protective layer is provided. It is characterized in that a large number are formed.

Further, according to the present invention, the daylighting panel is provided with an outer frame attached to an opening of the structure on an outer peripheral portion thereof.

Further, the present invention is a daylighting panel which is disposed in an opening of a roof of a structure and enables daylighting into the structure, the substrate being formed of a member having light transparency. And an amorphous solar cell panel attached to a surface of the substrate that is exposed to sunlight, wherein the amorphous solar cell panel is formed with a light passage portion that allows passage of sunlight. Characterize.

[0008]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 is a sectional front view of a roof portion of a structure using a daylighting panel according to the present invention, FIG. 2 is a plan view of the daylighting panel,
FIG. 3 is a sectional view of the same. In FIG. 1, 1 is a roof of a structure, 3 is a rectangular opening provided in the roof 1, 5 is a supporting frame standing from the peripheral edge of the opening 3, and a flat surface is provided at the upper end of the supporting frame 5. A tubular support member 7 having a rectangular shape is fitted therein, and a daylighting panel 9 is inclinedly arranged at an upper end opening of the support member 7.

As shown in FIGS. 1 and 2, the lighting panel 9 includes a glass plate 11 (corresponding to a substrate) having a shape and size corresponding to the upper end opening of the support member 7, and the glass plate 1
1 includes a see-through solar cell panel 13 attached to the sun facing surface 1101 and an outer frame 15 made of an insulating member that is fitted to the peripheral edges of the glass plate 11 and the see-through solar cell panel 13 and integrally holds them. Has been done. The outer frame 1
5 is engaged with the outer peripheral surface of the upper end of the support member 7 in a state where the daylighting panel 9 is disposed in the upper end opening of the support member 7, and the glass plate 11 is provided between the support member 7 and the outer frame 15. And the outer frame 15, and the see-through solar cell panel 13
A space between the outer frame 15 and the outer frame 15 is sealed by a sealing material (not shown).

The see-through solar cell panel 13 is composed of an amorphous solar cell panel. As shown in FIG. 3, the see-through solar cell panel 13 includes a stainless steel substrate 17 (corresponding to a conductive substrate). This stainless steel substrate 17 has a thickness of 0.125 mm, for example.
And-also functions as an electrode. An amorphous silicon layer 19 is formed on the stainless steel substrate 17, and the amorphous silicon layer 19 is formed in a known multilayer structure including P layer, I layer and N layer necessary for forming an amorphous solar cell. There is. amorphous·
A transparent electrode 21 is formed on the silicon layer 19, and this transparent electrode 21 functions as a + electrode.

A lower protective layer 23 and an upper protective layer 25 are formed on the lower surface of the stainless steel substrate 17 and the transparent electrode 21 by coating with a fluorine resin having a light transmitting property, and the lower protective layer 23 and the upper protective layer 25 are formed. The thickness of each 25 is, for example, 1.0 mm. The transparent electrode 21 and the upper protective layer 25 are the light receiving surface (front surface) 1301 of the see-through solar cell panel 13, and the stainless substrate 17 and the lower protective layer 23 are the rear surface 1303 of the see-through solar cell panel 13. The transparent electrode 21 is formed on the stainless steel substrate 17 and the amorphous silicon layer 19.
A large number of daylighting holes 1701 and 1901 are provided to allow light to pass from the side to the lower protective layer 23 side.

Below the lower protective layer 23 of the see-through solar cell panel 13, that is, the see-through solar cell panel 1
A back layer 1303 of No. 3 is further provided with a base layer 27 made of synthetic resin for firmly attaching the see-through solar cell panel 13 to the glass plate 11, and the bottom layer facing each lighting hole 1701 of the stainless steel substrate 17 is formed. Strat 27
Light-collecting holes 2701 are provided at the respective places, and in the present embodiment, the light-collecting holes 1701, 1901, and 2701 constitute a light passage portion. The see-through solar cell panel 13 has a thickness of 3 mm or less excluding the underlayer 27, and the underlayer 27 also has flexibility, and thus has excellent adhesion to the surface 1101 of the glass plate 11. .

Lead wires 29 are connected to the transparent electrode 21 (+ electrode) and the stainless steel substrate 17 (-electrode), respectively. These lead wires 29 are elements for preventing backflow of current, an overcharge prevention circuit, and a storage battery. Connected to a storage circuit consisting of
The electric power generated by the see-through solar cell panel 13 is stored in the storage battery. The method of using the electric power generated by the see-through solar cell panel 13 is arbitrary,
The generated electric power may be converted from direct current to 100 V alternating current in an inverter circuit without being stored in a storage battery and then supplied to a commercial power source from the inverter circuit, or may be directly supplied to a direct current motor or the like of an actuator. It may be used to drive the actuator.

The see-through solar cell panel 13 is attached to the surface 1101 of the glass plate 11 with the light receiving surface 1301 thereof facing the outside of the structure. The see-through solar cell panel 13 is attached to the glass plate 11 by, for example, an adhesive. The base layer 27 and the outer frame 15 on the surface 110 of the glass plate 11 using
Various methods are conceivable, for example, they may be adhered to No. 1 or may be attached by using metal fittings.

In the daylighting panel 9 according to this embodiment, the outer frame 15 is engaged with the outer peripheral surface of the upper end of the support member 7 by the same mounting work as in the conventional daylighting panel, and a sealing material is used to seal the space between the two. When stopped, the support member 7 is installed so as to be inclined at the upper end opening, whereby the daylighting panel 9 is constructed.
Therefore, the see-through solar cell panel 13 is stretched around at the same time when the installation of the daylighting panel 9 is completed.
Then, when the sunlight is applied to the daylighting panel 9, the sunlight energy is converted into electric energy by the see-through solar cell panel 13 and stored in the storage battery.

Further, the sunlight applied to the daylighting panel 9 passes through the upper protective layer 25 and the transparent electrode 21 and reaches the stainless steel substrate 17, whereupon the sunlight surrounds the stainless steel substrate 17 at the periphery of the daylighting hole 1701. Partly blocked, the lighting hole 17
01 and the aperture 1 of the amorphous silicon layer 19
The sunlight that has passed through 701 and 1901 is the lower protective layer 2
3 to reach the base layer 27, and further passes through the lighting holes 2701 of the base layer 27 and the glass plate 11 to be taken into the inside of the structure. Therefore, the brightness of the sunlight introduced into the structure is moderated by the amount of being partially blocked by the peripheral portion of the lighting hole 1701 of the stainless steel substrate 17, and the degree thereof is the same as that of the lighting holes 1701,1.
It can be arbitrarily adjusted by appropriately changing the diameters or intervals of the 901 and 2701.

As described above, according to this embodiment, the daylighting panel 9 is composed of the glass plate 11 and the see-through solar cell panel 13 attached to the surface 1101 of the glass plate 11 facing the sun through the underlayer 27. Of the see-through solar cell panel 13, the stainless substrate 17 and the amorphous silicon layer 19 of the see-through solar cell panel 13 and the ground layer 27 are provided with a large number of lighting holes 1 respectively.
701, 1901, and 2701 were formed. This eliminates the need for a conventional stand for a solar cell plate, and
Since there is no need to secure a space for installing the frame and the special work for installing the solar cell plate can be omitted, the see-through solar cell panel 13 is installed at the same time as the construction of the daylighting panel 9 at low cost easily. It becomes possible to do. Further, since the place where the see-through solar cell panel 13 is provided is originally a place where sunlight is sufficiently radiated, it is possible to efficiently receive sunlight energy without any ingenuity, and a large amount of power generation can be expected.

Further, according to the present embodiment, the lighting panel 9
Since the sunlight radiated on the light passes through the large number of light collection holes 1701, 1901, 2701 of the see-through solar cell panel 13, its brightness is somewhat moderated and taken into the inside of the structure. Even if the daylighting panel 9 is arranged in the opening on the south side of the structure exposed to strong sunlight, sunlight can be taken in with a brightness that is comfortable for humans inside the structure. It is possible to improve versatility by eliminating the restriction on the location.

In the embodiment, the see-through solar cell panel 13 is provided with the underlayer 27, and the see-through solar cell panel 13 is mounted on the glass plate 11 through the underlayer 27. 19 may be directly attached to the glass plate 11 to omit the base layer 27, or conversely, the base layer 27 may be provided with a certain degree of rigidity to omit the glass plate 11, and the glass plate 11 and the lower plate may be omitted. The formation 27 may be omitted together. Further, in the embodiment, the light collecting hole 2701 is provided in the base layer 27, but the base layer 27 may be formed of a member having a light transmitting property and the light collecting hole 2701 may be omitted. Furthermore, in the embodiment, the lower protective layer 25 is made of a fluorocarbon resin having a light transmitting property.
5 is formed of a light-shielding member, and the light collection holes 1701 and 19 are formed.
You may form the same lighting hole in 25 places of lower protective layers corresponding to 01 and 2701. In addition, the lighting holes 1701 and 1
901 may be a cavity or may be filled with a light-transmitting member.

[0020]

As is apparent from the above description, the present invention is
A lighting panel which is arranged in an opening of a roof of a structure and enables lighting into the structure, the conductive substrate forming an electrode, and an amorphous substrate formed on the conductive substrate.
A silicon layer, a transparent electrode formed on the amorphous silicon layer to form a + electrode, an upper protective layer formed on the transparent electrode by a member having light transparency, and formed below the conductive substrate. It has a lower protective layer and a large number of light-collecting holes that allow sunlight to pass from the amorphous silicon layer to the lower protective layer. Energy can be easily obtained, and the versatility can be improved by eliminating the restriction on the installation location.

[Brief description of drawings]

FIG. 1 is a sectional front view of a roof portion of a structure using a daylighting panel according to the present invention.

FIG. 2 is a plan view of the daylighting panel shown in FIG.

FIG. 3 is a cross-sectional view of the daylighting panel shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Roof 3 Opening 9 Light collecting panel 11 Glass plate (substrate) 1101 Glass plate surface 13 See-through solar cell panel 15 Outer frame 17 Stainless steel substrate (conductive substrate) 1701, 1901, 2701 Light collecting hole (light passing part) 19 Amorphous silicon layer 21 Transparent Electrode 23 Lower Protective Layer 25 Upper Protective Layer 27 Underlayer

Claims (3)

[Claims] 1. A daylighting panel which is disposed in an opening of a roof of a structure and enables daylighting into the structure, comprising: a conductive substrate forming an electrode; and a conductive substrate formed on the conductive substrate. An amorphous silicon layer, a transparent electrode formed on the amorphous silicon layer to form a + electrode, an upper protective layer formed on the transparent electrode by a member having a light-transmitting property, and below the conductive substrate. And a lower protective layer formed on the lower protective layer, wherein a large number of daylight holes that allow sunlight to pass from the amorphous silicon layer to the lower protective layer are formed. 2. The daylighting panel according to claim 1, wherein the daylighting panel is provided with an outer frame attached to an opening of the structure on an outer peripheral portion thereof. 3. A lighting panel, which is disposed in an opening of a roof of a structure and enables lighting into the structure, the substrate being formed of a light-transmissive member; An amorphous solar cell panel attached to a surface irradiated with sunlight, wherein the amorphous solar cell panel is formed with a light passage portion that allows passage of sunlight. Lighting panel.