JPH0328408Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention provides a solar energy collection device, in particular,
In a solar energy collecting device that collects solar energy by making the light-receiving surface of a lens system that focuses sunlight follow the direction of the sun, the shape, number, and arrangement of the lens system, and the The present invention aims to provide a compact and popular solar energy collecting device that takes into consideration the arrangement of a sunlight direction sensor for making a light receiving surface follow the direction of the sun.

FIG. 1 is an overall perspective view showing an example of a solar energy collection device previously proposed by the applicant. In the figure, 1 is a cylindrical base portion, 2 is a transparent dome-shaped head, and constitutes a capsule 3 for a solar energy harvesting device, and in use condition:
A solar energy collection device 10 is housed within the capsule as shown. This solar energy collecting device 10 includes a solar cell for concentrating sunlight.
sheets, several sheets, or many sheets (e.g., 7 sheets, 19 sheets, 61 sheets)
1,600 lenses), a sunlight direction sensor 12 for detecting the direction of the sun, a support frame 13 that holds these together, and a first rotation for rotating the support frame 13. shaft 14, the first rotation shaft 1
4, a first motor 15 that rotates the lens 11;
A support arm 16 supporting the motor 15, and a second arm disposed perpendicularly to the first rotating shaft 14.
It has a rotating shaft 17, a second motor (not shown) that rotates the second rotating shaft 17, etc., and detects the direction of the sun by the sunlight direction sensor 12, and uses the detection signal to detect the direction of the sun. controlling the first and second motors so that the lens 11 always faces the sun;
The sunlight focused by the lens 11 is introduced into a light guide cable (not shown) having a light receiving end located at the focal point of the lens, and is transmitted to any desired location through the light guide cable. There is.

Accordingly, the solar energy collecting device described above may have one lens, several lenses (2 or 4 lenses), or multiple lenses (for example, 7 lenses, 19 lenses) depending on its use. 61 lenses, 1600 lenses), etc., but from the viewpoint of cost, usage, scale, etc., the one with about 4 lenses is the most requested.

The present invention was developed in view of the above-mentioned circumstances, and in particular, in a solar energy collection device using four lens systems, the shape and arrangement of the four lenses, the arrangement of the sunlight direction sensor, etc. The objective is to make solar energy collection devices most effective and to make solar energy collection devices more compact and popular.

FIG. 2 is a schematic diagram of the main parts for explaining an embodiment of the solar energy collecting device according to the present invention, that is, the lens system 11 and the solar system direction sensor 12.
In the present invention, for example, four Fresnel lenses, each of which has at least three sides forming one side of an octagon, are used as the lens system 11, and these four Fresnel lenses 11 are identical. They are arranged on a plane with one side adjacent to each other as shown in the figure. Therefore, a rectangular play space A is created at the center of the surface formed by these four Fresnel lenses, and the sunlight direction sensor 12 can be placed in this play space.
In this way, a compact and popular solar energy collection device can be provided. Although FIG. 1 shows a cylindrical sunlight direction sensor, the applicant has already proposed a prismatic sunlight direction sensor (for example, in Japanese Patent Application No. No. 99993), by using this rectangular tube type sunlight direction sensor, the play space A can be used more effectively. Furthermore, although the figure shows an example using an octagonal lens, the present invention is not necessarily limited to an octagonal lens. It suffices if it is formed to constitute one side of an octagon, and the other portions may be, for example, a part of a circle. Furthermore, the solar energy collecting device according to the present invention is generally used while being housed in a transparent capsule.
In that case, if the outer periphery of the lens assembly is circular, the accommodation efficiency will be the best. A battery may also be provided. In addition, Fig. 3 shows - of Fig. 2.
This is an enlarged sectional view seen from the line direction, and as shown in the figure, according to the present invention, the distance l between the rotating shaft 14 and the lens 11 is shortened so that it does not interfere with the focal position of the lens system of the rotating shaft 14. Moreover, since the lens system can be arranged symmetrically with respect to the rotation axis 14 and balanced, the rotation moment can be reduced and the lens system can be driven.

[Brief explanation of the drawing]

FIG. 1 is a schematic overall configuration diagram for explaining an example of a solar energy collection device previously proposed by the applicant, and FIG. 2 is a diagram for explaining an example of a solar energy collection device according to the present invention. Main part plan,
FIG. 3 is a view seen from the - line direction of FIG. 2. 10... Solar energy collection device, 11...
Lens, 12... Sunlight direction sensor, 14... Rotation axis.

Claims (1)

[Scope of utility model registration request] a four-lens system for converging sunlight; a sunlight collection unit configured integrally with the lens system and for collecting sunlight focused by the lens system; and the sunlight collection. a light guide for transmitting sunlight collected by the part to a desired location; a sunlight direction sensor for detecting the direction of the sun; and a lens system and a member integrally configured with the lens system. a first rotary shaft that is movably supported; a support arm that supports the first rotary shaft; and a second rotary shaft that rotatably supports the support arm about an axis orthogonal to the first rotary shaft. the first rotation axis and the second rotation axis are controlled by the output signal of the sunlight direction sensor so that the light-receiving surface of the lens system faces the direction of the sun. introducing light into the light guide;
In the solar energy collection device configured to transmit solar energy to any desired location through the light guide, the four lens system is composed of lenses each of which has at least three sides constituting one side of an octagon; are arranged with the sides adjacent to each other on the same plane, and when these four lenses are arranged adjacently, the four corners are placed in a square play space created in the center surrounded by the four lenses. A sunlight direction sensor having a shape of 100 mm is disposed, and the first rotation axis is perpendicular to the axis of the sunlight direction sensor on the back side opposite to the light receiving surface of the lens system, and is connected to the lens system. A solar energy collection device characterized by symmetrically supporting members having an integral structure.