JPH0158483B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to an optical radiator for effectively diffusing and emitting light transmitted through a light guide cable or the like outside the light guide cable.

Conventional technology In recent years, research and development has been actively conducted in various fields on the effective use of solar energy in an era of energy conservation.However, in order to use solar energy most effectively, It is to use light energy as it is without converting it into other forms of energy such as energy or electrical energy. From this point of view, the present applicant focused sunlight using a lens or the like, introduced it into a light guide cable, transmitted it to any desired location through the light guide cable, and set up the light guide at that location. Various proposals have been made regarding the use of light emitted from cables for illumination and other uses, such as as a photosynthetic light source in forced cultivation of plants.

FIG. 2 is a partially sectional front view showing an example of an optical radiator previously proposed by the present applicant, and FIG. 3 is a front view of the optical radiator shown in FIG.゜It is a side view showing a part in cross section when rotated. In the figure, 1 is a light conductor cable through which sunlight or artificial light is introduced and transmitted; 10
is an optical radiator, and the optical radiator 10 includes a transparent cylindrical body 11 and transparent plates 13 ₁ to 13 disposed within the cylindrical body so as to be rotatable about an axis 12 perpendicular to the long axis of the cylindrical body. _7, etc., and the transparent plate can be rotated at any angle around the shaft 12. Therefore, the light conductor cable 1
The light emitted into the optical radiator 10 passes through the transparent plates 13 ₁ to 1 while traveling in the direction of arrow A.
A part of the light is reflected by the transparent plates 13 1 to 13 ₇ , and the remaining part is transmitted through the transparent plates 13 ₁ to 13 _7. The light transmitted through the transparent plates is reflected by the subsequent transparent plates, and the reflected light passes through the transparent cylindrical body 11 and is emitted to the outside. Each of the transparent plates 13 ₁ to 13 ₇ can be rotated at any angle around the axis 12 as shown in the figure.
Thereby, the amount of light reflected by each transparent plate 13 ₁ to 13 ₇ can be adjusted, and therefore,
The light distribution characteristics of the light emitted from the optical radiator 10 along the axial direction of the optical radiator 10 can be arbitrarily adjusted.

That is, although the figure shows an example in which seven transparent plates 13 ₁ to 13 ₇ are arranged in the cylindrical body 10, 1
When the transparent plate is parallel to the cylindrical body 11 as shown in 3 ₁ to 13 ₆ , the light travels in the direction of arrow A within the cylindrical body, and when it is tilted as shown in 13 ₇ , A part of it is reflected by the transparent plate and emitted from the cylindrical body 11, and the amount and direction of the emitted light differ depending on the rotation angle of the transparent plate. For example, when using the above light radiator as a light source for photosynthesis in forced cultivation of plants, while the plants are small,
As shown in the figure, when the upper transparent plates 13 ₁ to 13 ₆ are made vertical and the lower transparent plate 13 ₇ is tilted, the light introduced into the cylindrical body 11 passes through the transparent plate 1 inside the cylindrical body.
3 ₁ to 13 ₆ , the light is reflected by the transparent plate 13 ₇ and is emitted outside the cylindrical body 11 to be irradiated onto the plants. By tilting the upper reflector as the plant grows, light can always be supplied from above the plant, and some of the light that has passed through the slanted transparent plate will be directed downward. This light is reflected by the lower inclined transparent plate and emitted outside the cylinder, but most of the light is reflected by the upper inclined transparent plate, so a large amount of light is exposed above the plants. , and a small amount of light is supplied below, making it possible to grow plants most efficiently.

Note that if the transparent plate is a circular plate with a diameter equal to the inner diameter of the cylindrical body, even if the transparent plate is tilted at an angle of 45 degrees, there will still be a considerable gap between the transparent plate and the inner wall of the cylindrical body. In order to reduce the amount of light transmitted downward, the transparent plate is formed into an ellipse so that the gap disappears when the transparent plate is tilted at an angle of 45 degrees. Only the light that passes through the elliptical transparent plate is transmitted,
Light transmitted downward can be reduced.
Furthermore, if it is not necessary to emit light from the lower end of the cylindrical body 10, it is possible to form the lower end surface of the cylindrical body 10 into a reflective surface 10a. The light that reaches the lower end surface of the light radiator is reflected by the reflective surface 10a and directed in the direction of arrow B. Meanwhile, the light is reflected by the back surface of the slanted transparent plate and is emitted in the opposite direction, providing light to the plants on the back side of the light radiator. is emitted. It is also possible to provide a double-sided reflector in place of the transparent plate at the bottom. In that case, if the reflector has an elliptical configuration as described above, the gap between the reflector and the cylindrical body can be reduced. The light leaking downward through the gap can be minimized, and the light introduced into the cylindrical body can be used effectively. Furthermore, it is also possible to rotate the transparent plate and the reflecting plate described above to reverse the direction of inclination thereof, and in this way, it is possible to irradiate light even to the plants on the back side of the light radiator.
Furthermore, it is also possible to make the directions of the rotating axes of the transparent plates different from each other, and in this way, light can be emitted over the entire circumference of the optical radiator. Furthermore, it is also possible to use a half mirror, a double-sided reflective plate, or a combination of these in place of the transparent plate, and in the case of a double-sided reflective plate,
The angle of inclination may be up to 45°, in which case the rotation angle of the double-sided reflector will be 90° in total. Also,
When using a double-sided reflector and a transparent plate or a half mirror in combination, a double-sided reflector may be placed every other transparent plate or half mirror. board
When the cylinder is tilted at an angle of 45 degrees, all of the light propagating inside the cylinder is reflected by the reflector and emitted outside the cylinder. By doing so, the lowest end of the light emitted from the light radiator can be adjusted to a height that matches the growth of the plant. In addition, although the case where each transparent plate, half mirror, and double-sided reflective plate is a flat plate has been explained above, it is easily understood that these may be formed into an arcuate surface and reflected on a convex or concave surface. I can do it.

Therefore, the above-mentioned optical radiator proposed earlier by the present applicant uses one or more of the above-mentioned optical radiators set up near plants, but the arrangement position is not fixed in advance. However, it has the disadvantage that it cannot respond effectively and quickly to plant growth.

Purpose The present invention has been made in view of the above-mentioned circumstances, and is capable of effectively disposing a large number of light radiators as described above and effectively supplying light energy in response to the growth of plants. This was made for the purpose of providing an optical radiator device.

Configuration FIG. 1 is a configuration diagram for explaining one embodiment of the present invention. In the figure, 10, 10, . Gears (or pulleys) provided at desired locations, 30 a rack mechanism (or belt) for transmitting power to each gear (or pulley)
In the present invention, a large number of optical radiators 1
0, 10... are arranged parallel to the top of the plant to be cultivated as shown in the figure, and each optical radiator is connected to each axis via a gear (or pulley) 20 and a rack mechanism (or belt) 30. It is designed to be rotated around the Therefore, in order to grow plants effectively, it is already known that it is better to supply light energy discontinuously, that is, by repeating light and dark cycles, rather than continuously irradiating the same part of the plant with light energy. As is known and as mentioned above,
By rotating each light radiator to temporally change the irradiation of light energy, plants can be grown more effectively. In addition, if the light radiator arranged as described above is made movable in the vertical direction, while the plant is small, the entire radiator can be moved downward,
It can also be moved upward as the plant grows. Moreover, while the plants are small,
By adjusting the rotation angle of the transparent plate or the reflective plate, the irradiation range of light can be narrowed and widened as the plant grows larger.

Effects As is clear from the above description, according to the present invention, it is possible to provide a light radiator device that can effectively supply light energy to plants in immediate response to the plants and their growth.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram for explaining one embodiment of an optical radiator device according to the present invention, FIG.
The figure is a configuration diagram for explaining an example of an optical radiator previously proposed by the applicant. 10... Optical radiator, 21... Gear, 30...
...Lack mechanism.

Claims (1)

[Claims] 1. A plurality of transparent plates are disposed within a cylindrical body of a transparent body so as to be rotatable about an axis perpendicular to the axis of the cylindrical body and along the axial direction of the cylindrical body. An optical radiator device comprising an optical radiator and a driving means for rotating the cylindrical body of the optical radiator. 2. The optical radiator device according to claim 1, wherein a plurality of the cylindrical bodies are rotated by a single driving means. 3. The optical radiator device according to claim 1, wherein at least one inner end surface of the cylindrical body is formed as a reflective surface. 4. The optical radiator device according to claim 1, wherein the directions of rotation axes of the reflecting plates are different. 5. The optical radiator device according to claim 1, wherein the transparent plate is a flat plate. 6. The optical radiator device according to claim 1, wherein the transparent plate has an arc shape. 7. A large number of transparent plates rotatably arranged in a transparent cylindrical body around an axis perpendicular to the axis of the cylindrical body and arranged along the axial direction of the cylindrical body;
a light radiator that is rotatable in the cylindrical body about an axis perpendicular to the axis of the cylindrical body and that is disposed between the transparent plates and/or after the final transparent plate; An optical radiator device comprising a drive means for rotating the radiator and the cylindrical body. 8. Claim 7, characterized in that the reflective plates are arranged every plurality of the transparent plates.
The optical radiator device described in section. 9. The optical radiator device according to claim 7, wherein the directions of rotation axes of the transparent plate and the reflecting plate are different. 10. The optical radiator device according to claim 7, wherein the reflector is a double-sided reflector. 11 The reflecting plate is oriented toward the axis of the cylindrical body.
The optical radiator device according to claim 7, wherein the optical radiator device is rotatable within a range of 45 degrees. 12. An optical radiator having a plurality of reflective plates arranged in a transparent cylindrical body so as to be rotatable about an axis perpendicular to the axis of the cylindrical body and arranged along the axial direction of the cylindrical body. and a driving means for rotating the cylindrical body of the optical radiator.