KR101027782B1 - Solar Light Distributer and Solar Lighting System Using the Distributer - Google Patents

Abstract

The present invention relates to a solar light utilization technology, and more particularly, to a solar splitter and a solar lighting system using the same, which collects sunlight and distributes it to each part of a building that requires lighting to be used as a light source for illumination. will be.

The optical splitter according to the present invention is an amorphous polygonal chamber that has a reflective coating on the inner surface and does not have parallel surfaces. The supplementary light source and the controller are provided to compensate for the loss of light generated during transmission. Even when the light intensity changes, it always distributes light to all branches with a constant brightness.

The solar lighting system is composed of a focusing mirror and a parallel reflecting mirror arranged so that the axis and the focal point are coincident with each other, and a condenser for condensing a large area of sunlight into parallel rays, an optical cable transmitting condensed sunlight from the concentrator, It consists of an optical splitter that is installed in the middle of the optical cable to distribute the light to several places where lighting is needed, and an optical light that is installed in each room where the lighting is needed and transmitted to the optical cable.

Sunlight, condensing, distribution, optical cable, lighting, parallel light

Description

Solar Light Distributer and Solar Lighting System Using the Distributer}

The present invention relates to a solar light utilization technology, and more particularly, to a solar splitter and a solar lighting system using the same, which collects sunlight and distributes it to each part of a building that requires lighting to be used as a light source for illumination. will be.

Recently, interest in eco-friendly renewable energy is increasing, and thus, a number of devices using electricity to generate electricity or solar heat have been developed. However, research to use sunlight as a light source for lighting is insignificant.

In recent years, many large buildings have been built. In these large buildings, except for a part of the window area, lighting is performed using electricity even during the daytime when the sun is shining, and such electric energy consumption for lighting is large.

Recently, a patent application has been filed for a device using sunlight as a light source for illumination, but all are rarely feasible.

Korean Patent Publication No. 10-2004-0086031 "Light source equipment machine for concentrating a solar light source for energy" includes a light collecting device, a light source temporary storage room, a light source terminal switch, etc. together with a light collecting device, all of these physical properties of light It is impossible to realize them as imaginary components without considering them.

In Korea Registered Utility Model No. 20-0170477, "Photovoltaic condenser by light pipe," there is a description of the light splitter, but this is just a branch of a pipe with a reflection coating on the inner surface. I doubt it.

In addition, Korean Patent Laid-Open Publication No. 10-2006-0111099, "Lighting device using optical fiber", describes a lighting device using light flowing to the ends of a plastic optical fiber, which can be realized when light of appropriate illumination is transmitted to the optical fiber. .

Therefore, the lighting device using the optical fiber among the devices designed to date are practical, but the solar splitter for condensing sunlight and distributing it to each room requiring lighting is not feasible.

Recently, optical fibers have been developed and used for various purposes. In particular, recently, inexpensive plastic optical fibers have been developed and used for various purposes. The optical fiber is emitted to one end of the fiber and is totally reflected in the fiber so that it is almost lost and flows to the other end.

Plastic optical fiber is composed of a core made of high purity acrylic resin (PMMA) and a clad layer of fluorine polymer (F-PMMA, Fluorine Polymethyl methacrylate) thinly coated on the surface of the core. Since the refractive index of the clad is lower than the refractive index of the core, light from one end of the optical fiber causes total reflection at the interface between the core and the clad, and the light incident at one end exits to the other end.

The light transmission loss in the visible light band of the plastic optical fiber made of the acrylic resin is known to be approximately 60% at a length of 30m.

In order to use sunlight as a light source for lighting, a suitable condenser, a transmission means for transmitting the collected light to a required place, a light splitter for dividing the light during transmission into several paths, and a light for illuminating the room with the transmitted light are required. Do.

In particular, the optical splitter should be able to compensate for the losses incurred in the transmission of the light along the transmission means, and the brightness of the light distributed from each optical splitter to each transmitting device should be equal, and change according to weather and time zone. In spite of fluctuations in the brightness of sunlight, it should always be able to supply a constant brightness of light into the room.

The present invention has solved the above technical problem, and comprises a condensing mirror and a parallel reflecting mirror arranged so that the axis and the focal point are coincident with each other, a light concentrating device for condensing a large area of sunlight into parallel light beams, It consists of an optical cable that transmits sunlight, an optical splitter that is installed in the middle of the optical cable to distribute light to various places where lighting is needed, and an optical lighting that is installed in each room that needs lighting.

The optical splitter is an amorphous polygonal chamber with reflection coating on the inner surface and no parallel surface. In addition, the splitter is equipped with a supplementary light source to compensate for the loss of light generated during transmission, and to distribute the light to all branches with a constant brightness at all times, even if the intensity of incoming sunlight changes depending on weather conditions and time of day.

The present invention effectively collects sunlight and converts it into parallel rays, making it possible to transmit it to where it is needed.

The solar lighting system of the present invention saves energy for lighting and ultimately fossil fuels for power generation by allowing sunlight to be used as a light source for lighting without using extra energy during sunlight in a large building. It can help reduce carbon emissions by reducing the use of.

The solar splitter according to the present invention can stably supply a constant intensity of light to all rooms in need of lighting even if the amount of light collected due to a change in external weather conditions or a loss of light during transmission occurs.

As shown in FIG. 1, the solar lighting system of the present invention is installed in the middle of a light collecting device 1 for condensing sunlight, an optical cable 2 for transmitting the collected light to a required place, and an optical cable. It is composed of an optical splitter (3) for distributing the light to the required place, and an optical lighting (4) installed in the place where the lighting is needed to emit the light transmitted to the optical cable (2) to the room.

The detailed configuration of the light collecting device 1 is as shown in FIG. 2, which includes a condenser reflector 11 that focuses sunlight incident on a large area and a parallel reflector 12 that converts the condensed sunlight into parallel rays. And the light intensity 14 through which the focused solar light passes.

The focusing reflector 11 is a large concave mirror, and a hole in which the light intensity 14 is coupled is formed in the center where the constriction passes. The size of the focusing reflector 11 is sufficient to condense the light of illuminance required for illumination.

 The parallel reflecting mirror 12 is a small concave mirror, and the focusing mirror 11 and the mirror shaft face each other to coincide with each other so that the focus of the parallel reflecting mirror 12 is aligned with the focus of the focusing reflector 11. The parallel reflector 12 is fixed to the edge or the inner surface of the focusing mirror 11 by using three to four fixing rods 13 at the edge. The size of the parallel reflector 12 is to be as small as possible so as not to interfere with the incident of the sunlight to the focusing reflector 11, but to a size capable of reflecting all the light collected by the focusing reflector 11.

Light 14 is a passage through which the concentrated solar light can pass through the center of the focusing mirror 11, and is manufactured in a pipe shape having a predetermined length. Brightness should be made of copper, aluminum, etc., where heat transfer is good. It is preferable to provide suitable cooling means in the light intensity 14 to prevent temperature rise by solar heat.

In the case of a concave mirror, all light incident in parallel to the axis of the mirror is reflected toward the focal point, and all light incident through the focal point is reflected in parallel to the axis of the axis. The sun is so far from the earth that sunlight can be seen as a straight line of light. Thus, when the sunlight which is linear light enters the focus reflecting mirror 11 installed toward the sun in parallel with its axis, the sunlight is all focused toward the focus of the focus reflecting mirror 11. Since the parallel reflector 12 is in focus with the focusing mirror 11 and the axis of focus, the light reflected by the focusing mirror 11 and passing through the focus is reflected by the parallel reflector 12 facing the focusing mirror 11. In parallel with the axis of rotation, the light is directed toward the center of the focusing mirror 11 in a straight line.

As described above, by the two concave mirrors, the condensation reflector 11 and the parallel reflector 12, which are arranged to coincide with each other, the solar light incident on the condensation reflector 11 is focused by a linear beam and condensed. Proceed into luminosity 14 coupled to the constricted center of (11).

The focusing reflector 11 and the parallel reflecting mirror 12 should be focused by the posture control means 15 so that the focusing reflector 11 always faces the sun so that the sunlight is incident on the focusing reflector 11 in parallel with the axis of constriction. However, the sensor, the control device and the driving device required for this are a number of practical applications in the technical field using sunlight.

The photovoltaic device 16 forms an edge at the edge of the focusing mirror 11 and attaches a large number of solar cells to the edge. Recently, solar cells that produce electricity by converting sunlight into electricity have been commercialized and marketed. Electricity generated from solar cells is stored in a capacitor.

The optical cable (2) serves to transmit the solar light collected by parallel light from the light collecting device to the place where necessary, bundles a plurality of strands of optical fibers of a predetermined diameter to form a bundle, and is produced by wrapping the outside with a protective film. . It is recommended to use flexible and inexpensive plastic optical fiber made of high purity acrylic resin.

One end of the optical cable 2 is coupled to the light intensity 14, and the light collected by the light collecting device 1 and traveling in a straight line into the light intensity 14 is introduced into the cut surface of the optical fiber and transmitted along the optical fiber.

 As shown in FIG. 3, the optical splitter 3 is formed by coating a reflective layer 32 on an inner surface of the chamber 31, and a branch hole to which the optical cable 2 may be coupled to the wall of the chamber 31. 33) A plurality of these are formed. And the branch hole 33 which is not used is comprised so that the stopper 34 may be blocked.

The chamber 31 is manufactured in the form of an amorphous polymorphic container having no parallel planes to each other. In this case, when the chamber is an amorphous polymorphic shape, light introduced into a part of the chamber is continuously and irregularly reflected on each side of the chamber. As a result, the light is diffused evenly inside the chamber. As the light diffuses in the chamber 31 as described above, the illuminance becomes uniform at all points within the chamber, and the illuminance of all the branch holes 33 formed on the wall of the chamber 31 is the same.

The light splitter 3 includes a supplementary light source 35, an illuminance sensor 36, and a controller 37, to compensate for the loss of light generated during transmission, and to change the intensity of the incoming sunlight according to weather conditions and time zones. It is always good to be able to distribute light to all branches with a constant brightness. In the case of plastic optical fibers currently on the market, the light transmission loss is known to be approximately 60% at a length of 30m.

The supplementary light source 35 may be any type of light source that emits light by using one or more than two, but using an LED lamp may consume less electricity. Conventional LED lamps are commercially available and commercialized in such a way that a plurality of LEDs, which are light emitting devices, are bundled into a single light source. The electricity supplied to the supplemental light source 35 may be discharged by commercial electricity supplied from the outside or by the photovoltaic device 16 provided in the light collecting device 1, and may use electricity stored in the capacitor.

The illuminance sensor 36 is an apparatus for measuring illuminance which is the brightness inside the chamber 31, and a commercially available illuminometer may be used.

When the illuminance inside the chamber 31 sensed by the illuminance sensor 36 is lower than the reference value, the controller 37 increases the illuminance of the chamber by supplying electricity to the supplemental light source 35 as many times as necessary, and increases the illuminance of the chamber. When the illuminance is higher than the reference value, the control to lower the illuminance of the chamber by cutting off the electricity to the required number of supplemental light source (35).

The light lamp (4) is to emit the light transmitted to the optical cable (2) to the room, it is configured in the form of covering the reflection shade around the optical fiber bundle at the end of the optical cable (2). In the case of plastic optical fiber, when the clad coated on the surface of the core is removed, light leaks directly from the core, and a long light lamp such as a fluorescent lamp can be made by covering a reflection shade around the optical fiber from which the clad has been removed.

The present invention is a light splitter and a solar lighting system using the same can be used in the field of lighting equipment.

1 is a block diagram of a solar lighting system of the present invention.

2 is a configuration diagram of a light collecting device.

3 is a block diagram of an optical splitter.

※ Important Component Number

1: condenser, 2: optical cable, 3: light splitter, 4: light lighting,

11: focusing mirror, 12: parallel reflecting mirror, 13: fixed rod, 14: brightness,

15: attitude control means, 16: solar photovoltaic device,

31: chamber, 32: reflective layer, 33: branch hole, 34: stopper,

35: supplementary light source, 36: illuminance sensor, 37: controller.

Claims (6)

 A chamber 31, which is an amorphous polymorphic container without faces parallel to each other; A reflection layer 32 coated on an inner surface of the chamber 31 to reflect light; A plurality of branch holes 33 are formed on the walls of the chamber 31, and are branched holes 33 to which optical cables for introducing light into or out of the chamber 31 are coupled. It is configured to include, the light entering the branch hole 33 of the chamber is irregularly continuously reflected on each side of the interior of the chamber 31, characterized in that the light is evenly diffused inside the chamber, 3).  The method of claim 1, wherein the optical splitter 3, The supplementary light source 35, which is a lamp for generating light by electricity, is additionally provided with one or two or more dogs, and when the light flowing into the optical cable is insufficient, it is possible to raise the illuminance inside the chamber 31. The optical splitter (3).  The method of claim 2, wherein the supplementary light source 35, A light splitter (3), characterized in that the plurality of light-emitting body is an LED lamp to form a cluster and become one light source.  The method of claim 2, wherein the optical splitter 3, An illuminance sensor 36, which measures the brightness inside the chamber 31; When the illuminance is lower than the reference value according to the brightness of the chamber 31 received from the illuminance sensor 36, electricity is supplied to as many supplementary light sources 35 as necessary to increase the illuminance of the chamber and the chamber 31. A controller 37 for controlling the lowering of illuminance of the chamber 31 by cutting off electricity to the supplemental light source 35 as necessary when the illuminance inside is higher than the reference value; Further provided, characterized in that the illuminance of the interior of the chamber (31) is always a predetermined or more, optical splitter (3). A focus reflecting mirror 11 for focusing sunlight incident on a large area as a large concave mirror, and a small concave mirror arranged so as to coincide with the focus axis with the focus reflecting mirror 11 to convert the focused sunlight into parallel rays. Focusing mirror 11 as being coupled to a hole formed in the central portion through which the reflecting mirror 12, the parallel reflecting mirror 12 is fixed to the focusing mirror 11, and the longitudinal axis of the focusing mirror 11 passes through. A light concentrating device (1) composed of luminous intensity (14), which is a passage through which sunlight that is collected by a light beam and is reflected by being reflected as a linear light beam by a parallel reflector (12); An optical cable (2) coupled to the light intensity (14) of the light concentrating device (1) to transmit the collected light to a required place, the optical cable (2) configured to surround the outside of the optical fiber bundle formed of a plurality of strands with a protective film; The optical fiber according to any one of claims 1 to 4, which is installed in the middle of the optical cable 2, and functions to distribute light flowing into one optical cable 2 to a plurality of optical cables 2. Distributor 3; And, it is installed in a place where lighting is required, the end of the optical cable (2) is connected, and emits the light transmitted through the optical cable (2) to the outside, the light lamp (4); It is configured to include, characterized in that the solar light condensing to use as a light source for illumination, solar lighting system. The method of claim 5, A flexible plastic optical fiber is used as the optical fiber of the optical cable (2), solar lighting system.

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