JPS6089983A - Solar light collecting device - Google Patents

Abstract

PURPOSE:To always regularly oppose a light collecting plate to the sun by disposing a plurality of stretchable pieces which stretch by thermal expansion to the axial peripheral surface of a post, opening a mounting hole in the plate, inserting the post into the plate, and supporting the inner wall of the hole to the corresponding piece. CONSTITUTION:This device has a post 1 and a light collecting plate 2 tiltable supported to the post 1. Stretchable pieces 11 disposed on the outer periphery of the post 1 expand by the thermal energy of the sun, the piece 11a of the sun side stretches by thermal expansion as compared with the piece 11b of the shade of the sun at the position of an engaging pin 21, and the pin 21 supports the plate 2 so that the sun side is at lower position and the shade side is at upper position in facing oppositely the sun. Accordingly, since the piece gradually stretches facing the sun as compared with the piece at the shade side in response to the movement of the sun, the plate 2 always traces the sun.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to a power generation device that utilizes sunlight, and in particular, the present invention relates to a power generation device that mechanically automatically tracks the movement of the sun, and a light collecting surface of a light collecting plate. Concerning solar concentrators that correctly point the light toward the sun.

Conventionally, this type of power generation device supports a light condensing plate in a tiltable manner,
By controlling this tilting drive mechanism with a sun tracking sensor, the orientation of the light condensing plate with respect to the sun is adjusted. However, the two-set device requires additional energy to drive the light condensing plate,
In addition, since the device becomes large, it is not suitable for small-scale power generation.

On the other hand, there has been significant progress in improving the efficiency of solar cells themselves, and the price has also dropped significantly.As a result, the industry has recently
Although there is a strong desire for the emergence of small-scale solar power generation devices for home use, such devices do not currently exist.

<Objective of the Invention> An object of the present invention is to provide a novel solar concentrator that can satisfy the above requirements by tilting a condenser plate using solar thermal energy.

<Description of Embodiments> In the illustrated example, the solar condensing device of the present invention is composed of a support 1 and a light concentration plate 2 tiltably supported by the support.

The support column 1 includes a plurality of trough-like elastic pieces 11 formed of plastics with a high expansion coefficient, metal plate, or other arbitrary material that expands and contracts depending on the intensity of solar thermal energy, around the axis of the main rod 10 made of pipe, In the drawing, four rods are arranged in a circle, the upper end of which is fixed to the main rod 10, and the lower portion is supported by a ring-shaped holder 13 fixed to the main rod 10 so as to be slidable in and out. There is.

-1-, a locking hole 12 is formed in the lower part of each elastic piece 11 to support the light condensing plate 2. The light condensing plate 2 constitutes a solar cell panel, and a mounting hole 20 with an inner diameter that can be fitted into the support column 1 with a margin is provided approximately at the center of the plate surface.
Locking pins 21 are provided protruding from the inner wall of the mounting hole 20 to face the front, rear, left, and right sides.
They are respectively engaged and supported. Note that the support structure of the light condensing plate to the pillar is not limited to the locking pin shown in the illustration.
For example, various methods may be employed, such as adhesion using soft vinyl or other connecting members.

However, the expandable piece 11 arranged around the outer periphery of the support column (1) expands due to the thermal energy of the sun, and the locking pin 2
In the 1 position, the sun-side expandable piece 11a extends more than the shade-side expandable piece 11b due to thermal expansion, and the locking pin 21 is positioned with the sun side at the bottom and the shade side at the top, so that the light condensing plate 2 faces the sun. Tilt support. Therefore, as the sun moves, the extensible piece facing the sun gradually expands and expands from the shaded side, so the light condensing plate 2 always tracks the sun.

FIG. 3 is a relational diagram showing the degree of change of the light condensing plate, where φ is the outer diameter of the support 1, l is the length from the end of the support 1 to the attachment part of the light condensing plate, and Δl is the change caused by the temperature difference.

Here, if the two thermal expansion coefficients are δ, and the temperatures on the sun side and shadow side are Tl and T2, respectively, then Δg=δ(Tl-T2)
/, so ψ.

7. To obtain a predetermined change angle θ. /, select φ.

In addition, in order to obtain T1-T2, the support column 1 also plays the role of a heat dissipation pipe.

Incidentally, the generated output can be stored in a storage battery from the output line 22, or alternatively, as shown in FIG. 4, it can be configured to be connected in series or parallel with another light condensing plate to obtain a predetermined power.

<Effects of the Invention> As described above, the present invention provides a plurality of extensible pieces that expand and contract due to thermal expansion on the shaft circumferential surface of a support, and also provides a mounting hole in the light condensing plate, which is inserted into the support. Since the inner walls of the pillars are supported by the corresponding expandable pieces, the pillars can always keep the condensing plate directly facing the sun using the sun's thermal energy.

However, since the present invention does not require the conventional light condensing plate tilting device, etc., it not only makes effective use of solar energy, but also makes the device particularly compact, making it suitable as a small-scale solar power generation device for home use. The second effect of "Simple configuration and practical use" is remarkable.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a solar concentrator showing an example of the present invention, Fig. 2 is a vertical cross-sectional view, Fig. 3 is an explanatory diagram showing the principle of changing direction of the condenser plate, and Fig. 4 is use of the device of the present invention. It is a perspective view showing an example. 1... Prop 11... Telescopic piece 2...
・・・Light condensing plate

Claims (1)

[Claims] A column is provided with a plurality of expandable pieces that expand due to solar heat around the shaft, and a mounting hole is provided that fits into the column with plenty of room. A solar concentrator consisting of a supported condenser plate.