KR20140070158A

KR20140070158A - film-type special fresnel lens for solar condensing applied PSALI

Info

Publication number: KR20140070158A
Application number: KR1020120138297A
Authority: KR
Inventors: 박인수
Original assignee: (주)파크이즈건축사사무소
Priority date: 2012-11-30
Filing date: 2012-11-30
Publication date: 2014-06-10

Abstract

The present invention relates to a film-type special Fresnel lens for solar lighting which is configured in windows or transmission windows constructed in a building for solar lighting, and comprises: a Fresnel lens film layer located in the windows or the transmission windows to reflect solar light incident from the sunlight to inner side of the building; an adhesive layer provided on the back of the film layer to adhere the Fresnel lens film layer to the windows or the transmission windows; and a release film layer which is applied to the adhesive layer to be released during attachment.

Description

[0001] The present invention relates to a film-type special fresnel lens for solar photolithography using a PSALI illumination method,

The present invention relates to a special Fresnel lens for a solar photographic film type using a PSALI lighting system, which is a passive building system, and more specifically, The present invention relates to a special Fresnel lens of a solar photographic film type using a PSALI illumination method which is very easy to install.

Generally, architecture is good in residence such as mining and ventilation in the outer periphery, and the more it gets away from the outer periphery, the lower the residence. Accordingly, the living room corresponding to the inside of the interior space consumes the energy for improving the residence, such as turning on the light even during the daytime, but the quality is less than the comfort given in nature.

Also, recently, a lot of high-rise buildings in the city center, and relatively low-rise interior or high-rise buildings in the surrounding area, the time of direct solar irradiation is short, and only a part of the interior is supported. Even this often causes occupants to suffer from diseases such as the sunshine deficiency syndrome due to lack of sunshine and unnecessary energy consumption is occurring due to the use of sunlight as a lighting device such as a fluorescent lamp in the daytime.

Psalial lighting, which is half luminous, is also used in schools and laboratories. In order to obtain a homogeneous illumination by using natural light even in the deep part of the room.

For this reason, various photovoltaic mining devices have recently been proposed in an effort to secure a sunshine over a certain period of time.

These solar mining devices are natural energy utilization devices that are expected to be introduced and expanded in the future as devices that prevent global warming, reduce energy, and benefit residents' health.

Passive is typically PSALI lighting. It is a technology that is widely used in schools, offices, hospitals, houses and so on by installing a light shelf on the outer wall of a building and reflecting the sunlight on the light shelf inside to improve the internal lighting environment.

A more active method is disclosed in Japanese Patent Application Laid-Open No. 2006-100954 entitled " Sunlight Reflecting Device and Method Using a Mirror Installed on a Building Wall ", and Patent No. 729721 " Natural Light Device "

The solar light device includes a reflection plate for reflecting incoming sunlight and an angle adjusting means for adjusting the angle of the reflection plate so that the light reflected by the reflection plate is directed to a shade area to be irradiated. These prior art also include these components.

As described above, the conventional solar light mining apparatus has been developed in a wide variety of forms, and contributes greatly to solving the problems that have been experienced so far by contributing sunlight to the interior of the city building and contributing to the amount of sunshine.

However, since various mining devices developed so far have a very complicated structure and high investment cost in order to maximize the mining rate and implement the solar tracking, The biggest difficulty is in the problem.

FIGS. 1 to 3 show a state in which a general reflector using Pasalite illumination, which is a passive method, is applied, or a transmission window is formed on the roof surface for sunlight. 1 and 2 The biggest disadvantage of a general light structure having a reflector is that the reflector must be positioned horizontally on the ground, so that it is very limited in terms of space and causes an increase in the cost of the construction. Depending on the incident angle and the surrounding conditions, This is a great difficulty in designing because it shows a big difference.

In the case of FIG. 3, although a building to be constructed in recent years is constituted by a transmission window through which a roof or a roof can be transmitted, sunlight can be incident into the inside of the building. However, in this case, the angle of incidence is very limited, There is a drawback that it can not be done.

KR 10-0779275

According to an aspect of the present invention, there is provided a film-type solar light collecting film comprising a plurality of solar cells, And it is an object of the present invention to provide a Fresnel lens capable of allowing sunlight to enter into a building through simple adhesion.

Accordingly, it is an object of the present invention to provide a lens which can be applied to a new building and easily attached to an existing building, thereby realizing the effect of PSALI illumination at low cost, thereby improving the internal illumination environment.

According to another aspect of the present invention, there is provided a method of manufacturing a solar cell module, the method comprising: forming a window or a transmission window in a building for sunlight; reflecting sunlight incident from the solar module to the inside of the building; An adhesive layer provided on the rear surface of the film layer to adhere the Fresnel lens film layer to a window or a transparent layer, and a release film layer adhered to the adhesive layer and removed when adhered thereto .

The Fresnel lens film layer has a refractive index of at least 1.395 and a thickness of at least 2 mm.

The reflector may further include a reflector provided on the ceiling inside the building to reflect again some of the light reflected from the Fresnel lens film attached to the window to the ceiling of the building .

Further, the Fresnel lens film is characterized in that the outer surface, the inner surface, or both surfaces are adhered to the window or the transmission window.

Further, the Fresnel lens film is characterized by being made of any one of acrylic resin, transparent plastic-based synthetic resin, and glass.

The Fresnel lens film layer is configured such that the Fresnel lens design values are different from one another in each of the areas so that the areas have different reflection values.

Further, the Fresnel lens film layer is characterized in that a reflective layer for determining the reflectivity is further coated as a vertical surface layer on which sunlight is incident.

Since the present invention constructed and operative as described above can easily adhere to a transparent structure such as a building window to allow outside sunlight to enter into a building, it is very easy to install, and a solar light concentrating facility There is a feature that can be.

In addition, the present invention is advantageous in that an efficient condensing facility can be provided by applying a Fresnel lens film designed for various angles according to the characteristics of a building.

Particularly, the present invention can be widely applied to general buildings such as existing houses, apartment houses, offices, schools, hospitals, apartment-type factories, and the like, and is also applied to greenhouses with solar themes to promote plant growth, There is an advantage that it can raise. It is possible to use the whole of the window, but by using a part of the upper part, it is possible to improve the indoor lighting effect while securing the outer view at the eye level There is a big advantage.

FIGS. 1 to 3 are views showing an example of a conventional solar light condensing apparatus according to the Poussali illumination system,
4 is a cross-sectional view of a Fresnel lens for a solar light mining film type according to the present invention,
FIG. 5 is a view showing an example in which a Fresnel lens of the solar light mining type according to the present invention is applied,
6 is a view showing another example to which a Fresnel lens of the solar light mining film type according to the present invention is applied,
FIG. 7 is a view showing an example applied to a building having a roof-top window,
8 is a view showing another example of 7,
9 to 10 are views showing transmission and reflection characteristics of a Fresnel lens fill-in layer according to the present invention,
FIGS. 11 to 12 illustrate a film type Fresnel lens having a composite reflectance according to another embodiment of the present invention. FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a Fresnel lens for a solar photographic film according to the present invention will be described in detail with reference to the accompanying drawings.

The Fresnel lens of the film type for photovoltaic sunlight according to the present invention is constituted in a window or a transmission window formed in a building for the purpose of sunlight, and the sunlight, which is located in the window or the transmission window, An adhesive layer provided on the rear surface of the film layer to adhere the Fresnel lens film layer to a window or a transparent layer, and a release film layer adhered to the adhesive layer to be removed when adhered to the adhesive layer, .

The Fresnel lens film according to the present invention is a film type in which the optical design value of a Fresnel lens that implements reflection, transmission, and light collection at an arbitrary angle is implemented as a film type, So that the sunlight can be incident on the inside of the building at various angles.

4 is a cross-sectional view of a Fresnel lens of the film type for solar light mining according to the present invention.

The cross-sectional structure of the Fresnel lens film 100 includes a Fresnel lens film layer 110, an adhesive layer 120 formed on the rear surface of the film layer, and an adhesive layer 120 temporarily adhered to the adhesive layer, (130).

The Fresnel lens film layer 110 is preferably designed to have a refractive index of 1.395 at a wavelength of 0.4 to 1 mu m, and the material thereof is PDMS. As a preferred example, the lens material is manufactured by Dow Corning under the product name "SYLGARD 184".

The adhesive layer 120 is a pressure-sensitive adhesive for bonding the Fresnel lens film 100 to a window or a transparent layer. The pressure-sensitive adhesive layer 120 may be made of a general urethane-based resin, And a detailed description thereof will be omitted.

The release film layer 130 is a temporary film for preventing contamination of the adhesive layer. When the Fresnel lens film 100 is adhered to a window, the release film layer 130 is removed, It can be exposed and then glued to the window.

Further, the Fresnel lens film layer 110 is further formed with a reflection layer 111 for determining solar reflection at a vertical incident surface of the surface on which sunlight is incident. The coating of the reflective layer can be designed to have various reflectivities such as 50:50, 30:70, and 10:90. By forming a coating layer on the surface of the vertical surface by vapor deposition using a metal or a nonmetal material, various transmittances and reflectivities You can decide.

FIGS. 5 and 6 are views showing an example in which the Fresnel lens of the solar light mining film type according to the present invention is applied. As shown in the figure, when the Fresnel lens film 100 configured as described above is attached to the window of the outer wall of the building, the sunlight incident from the sunlight is reflected to the inside. 5 and 6, in order to realize a method of entering the inside of the building, a separate reflection plate 140 is formed of a ceiling inside the building, and solar light is incident on the inside through secondary reflection. The convergence of light to the surroundings can be easily realized by changing the angle of the Fresnel lens film only.

The Fresnel lens film can greatly change the angle of reflection of sunlight incident from a high angle, thereby allowing sunlight to enter the interior of the building.

FIG. 7 is a view showing an example applied to a building having a roof-top transmission window, and FIG. 8 is a view showing another example of FIG. As shown in the figure, in the case of a building having a transmission window 300 on a roof or a rooftop surface, sunlight flows well, but it is forced to enter in only one direction. In this case, the Fresnel lens film may be provided on both sides of the transmission window to be incident, and the solar light can be incident on both sides as viewed from the sectional view. At this time, according to the design value of the Fresnel lens film, the angle of incidence can be variously changed so that the sunlight can be effectively incident according to the internal structure of the building.

9 to 10 are views showing transmission and reflection characteristics of a Fresnel lens fill-in layer according to the present invention. As mentioned above, the thickness of the Fresnel lens film is designed to be at least 3 mm to minimize light loss due to reflection. The light incident from the sunlight is reflected by the Fresnel lens in various angles, and as a result, efficient lighting can be achieved. In FIG. 10, when a double-structured Fresnel lens film is implemented, the angle of reflection can be changed by inducing secondary refraction.

On the other hand, according to another embodiment of the present invention, a plurality of Fresnel films may be configured to control various reflection angles. The groove angle of the Fresnel film may be different from that of the Fresnel film, and one Fresnel film may be integrally formed to control the reflection angle. For example, the groove surfaces may be opposed to each other, one direction or opposite to each other, and one Fresnel film may be integrally formed.

11 to 12 are views showing a film type Fresnel lens having a complex reflectance according to another embodiment of the present invention. As shown in the figure, the film type Fresnel lens according to the present invention can be designed to have a different reflection characteristic by dividing a certain area with respect to one film area. The reflectance of the reflective layer is designed to be different from that of the Fresnel lens, and the reflectance of the Fresnel lens is designed to be different from each other in one area of 25 degrees, 35 degrees, 45 degrees, 55 degrees, 65 degrees, , The reflection angle, the transmission angle, and the transmittance can be determined. When a Fresnel lens film designed in this way is applied, it is possible to control large-area solar light transmission through various reflection angles and reflectivity by installing one film.

The present invention configured as described above can easily attach the solar light to the inside / outside of the building window or the transmission layer for the sunlight to enter the inside of the building at various angles so that the installation is very simple and low cost It is possible to maximize the satisfaction of the customer and the activation of the mining industry market.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. On the contrary, those skilled in the art will appreciate that many modifications and variations of the present invention are possible without departing from the spirit and scope of the appended claims. And all such modifications and changes as fall within the scope of the present invention are therefore to be regarded as being within the scope of the present invention.

100: Fresnel lens film
110: Fresnel lens film layer
111: reflective layer
120: Adhesive layer
130: release film layer
140: Reflector
200: Window
300: Transmission window

Claims

It consists of a window or a transmission window constructed in the building for solar mining,
A Fresnel lens film layer positioned in the window or the transmission window to reflect the sunlight incident from the sunlight to the inside of the building;
An adhesive layer provided on the rear surface of the film layer to adhere the Fresnel lens film layer to a window or a transparent layer; And
And a release film layer which is adhered to the pressure-sensitive adhesive layer and is removed when adhered to the pressure-sensitive adhesive layer.

2. The Fresnel lens film according to claim 1,
A refraction index of 1.395 or more, and a thickness of at least 2 mm.

The method according to claim 1,
Further comprising a reflector provided on the ceiling inside the building for re-reflecting part of the light reflected from the Fresnel lens film attached to the window to the ceiling of the building. Fresnel lens of mining film type.

2. The Fresnel lens film according to claim 1,
The Fresnel lens for a solar photographic film type is characterized in that the outer surface, the inner surface, or both surfaces of the window or the transmission window are adhered to each other.

2. The Fresnel lens film according to claim 1,
And the Fresnel lens design values are configured to be different from one another in each of the compartments so as to have different reflection values from each other.

2. The Fresnel lens film according to claim 1,
A Fresnel lens for a solar photographic film type, characterized in that a reflective layer for determining a reflectance is further coated with a vertical surface layer on which sunlight is incident.

6. The Fresnel lens film according to any one of claims 1 to 5,
A Fresnel lens of the solar photographic film type, which is made of any one of acrylic resin, transparent plastic-based synthetic resin, and glass.