JPH10106316A - Solar ray transmitting apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently carry out cooling with a miniaturize size and make a solar ray transmitting apparatus usable for a long duration by leading light rays converged by a condenser to a quartz rod, further leading the light rays to an optical fiber, and cooling the peripheral part of the inner end parts of the quartz rod and the fiber with cooling wind. SOLUTION: Solar rays are introduced into a quartz rod 5 of which one end is installed in the bottom part of a tracing apparatus. Further, the solar rays enter a conical-shaped condenser 15 and led to a fiber 11 to illuminate desiring points. In this case, the quartz rod 5 and the fiber 11 are kept at a prescribed gap each other and the conically-shaped condenser 15 is installed between the quartz rod 5 and the fiber 11 and the peripheral part of the inner ends of the quartz rod 5 and the fiber 11 is cooled with cooling wind. Consequently, the light rays out of the quartz rod 5 are converged into a focal point in the fiber 11, so that the light rays are led efficiently and without transmitting the high heat from the quartz rod 5, the light rays can be transmitted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a solar propagation device.

[0002]

2. Description of the Related Art In recent years, sunlight has been tracked and collected by a concentrator, and the collected sunlight is guided to, for example, an underground space via a quartz rod by an optical fiber and used as illumination light. Tracking devices have been developed.

[0003]

According to the automatic solar tracking device described above, the sunlight collected by the light collector is
First, since the quartz rod enters the quartz rod, the tip of the quartz rod has a high temperature of about 600 ° C., and sunlight cannot be transmitted to the optical fiber unless cooled. However, there is a disadvantage that it is difficult to rapidly cool the solar cell using a quartz rod.

A structure has also been proposed in which sunlight condensed by a condenser is guided to a quartz rod, and the sunlight is further transmitted to an optical fiber via a cooling medium. However, the cooling medium is apt to leak or leak. In this case, the optical fiber may be deteriorated by high heat, which is not practical. In addition, the coolant needs to be replenished every predetermined period, and maintenance is troublesome.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and has as its object to provide a small-sized apparatus which can be efficiently cooled and used for a long period of time.

[0006]

Means for Solving the Problems The present invention has the following structure to solve the above-mentioned problems. In other words, claim 1 is a solar light propagation device that propagates sunlight condensed by a light collector to a fiber through a quartz rod having one end disposed at the bottom of the light collector, and irradiates the fiber from an outer end of the fiber. About. Further, a predetermined interval is provided between the quartz rod and the fiber, and a light collector is arranged between the quartz rod and the fiber. In addition, the vicinity of the inner end of the quartz rod and the fiber is cooled by cooling air.

[0007] A second aspect of the present invention provides the quartz rod according to the first aspect,
It is configured to be fitted into a cylindrical heat-dissipating waterproof body having heat-dissipating fins and a plurality of cooling vents, so that cooling is performed efficiently.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to FIGS. In FIG. 1, reference numeral 1 denotes a light collector, which is formed into, for example, a rectangular box. Reference numeral 2 denotes a Fresnel lens arranged at the front end of the light collector 1, which is configured so that the collected sunlight gathers at the center of the bottom of the light collector 1.
Reference numeral 3 denotes a support for supporting the light collector 1,
Is configured to rotate.

Reference numeral 4 denotes a solar transmission device arranged at the end of the light collector 1, and reference numeral 5 denotes a quartz rod constituting the solar transmission device, which is, for example, 20 mm thick and 30 cm long. .
Reference numeral 6 denotes a protective tube for protecting the quartz rod 5, which is made of, for example, aluminum and has a diameter of about 40Φ, and has a gap 7 between the quartz rod 5 and the protective tube 6. 8 is a protective tube
The radiation fins 9 disposed on the outer periphery of the protective tube 6 are connection plates having a curved surface fitted to one end of the protective tube 6, and are made of, for example, brass. Reference numeral 10 denotes a connecting heat conductive plate fitted to one end of the connecting plate 9 and is made of, for example, brass.

Reference numeral 11 denotes a fiber for transmitting light from the quartz rod 5 to a desired location, and is constituted by, for example, a plastic fiber or a liquid fiber.
The heat resistance temperature of plastic fiber is usually around 80 ℃,
The heat resistant temperature of the liquid fiber is usually about 300 ° C.
The thickness of these fibers is about 18Φ. Reference numeral 12 denotes a clamping plate having a curved surface which is fitted to one end of the fiber 11, and the other end of which is connected to the heat conducting plate 1 for connection.
0. Reference numeral 13 denotes a fiber fixing bush that is fitted to one end of the fiber 11 inside the clamping plate 12, and is made of a rubber material. Reference numeral 14 denotes a core-clad cooling ring fitted to one end of the fiber 11 inside the clamping plate 12. Reference numeral 15 denotes, for example, a conical concentrator, which is configured such that a large diameter portion at one end is joined to the quartz bar 5 and a small diameter portion at the other end is arranged toward the fiber 11. The small diameter part of the conical light collector 15 is arranged with a space of about 2 cm from the fiber 11.

Reference numeral 20 denotes a sensor housing in which a main sensor is mounted, which directs the tracking device toward the sun. In addition, a start start sensor, an ascent sensor, and an ascent / stop sensor are mounted on the main sensor housing. 21 and 2
Reference numerals 2 and 23 denote sensor protection tubes which are arranged at locations close to the condenser 1 of the protection tube 6. Reference numeral 24 denotes a descending fine-adjustment sensor built in the sensor protection tube 21, which is configured using a phototransistor. 25 is a sensor protection tube 22
This is a fine adjustment sensor for ascending built in the camera, and is configured using a phototransistor. The ascending fine adjustment sensor 25 is arranged at a symmetrical position with respect to the descending fine adjustment sensor 24. Reference numeral 26 denotes a stop tracking fine-adjustment sensor built in the sensor protection tube 23, which is configured using a phototransistor. The heat-resistant photoconductor 32 of the stop tracking fine-adjustment sensor is located between the heat-resistant photoconductor 30 of the descending fine-adjustment sensor and the heat-resistant photoconductor 31 of the ascending fine-adjustment sensor.

Reference numerals 30, 31, and 32 denote heat-resistant photoconductors each having a distal end positioned at an end opening of the protective tube 6 and having the other end close to each fine adjustment sensor. 33,34,
Reference numeral 35 denotes a light-shielding tube for protecting the heat-resistant photoconductors 30, 31, and 32.

The operation of the above-described solar light propagation device when the sunlight collected by the tracking device is propagated to the fiber via the quartz rod will be described. The tracking device is directed to a direction in which sunlight can be collected by various main sensors and various fine adjustment sensors, and the sunlight is guided to a quartz rod having one end disposed at the bottom of the tracking device. Further, the sunlight enters, for example, a conical concentrator 15 and is guided to the fiber 11 to illuminate a desired location. In this case, a predetermined distance is provided between the quartz rod 5 and the fiber 11, and a conical concentrator 15 is arranged between the quartz rod 5 and the fiber 11.
And the vicinity of the inner end of the fiber 11 is cooled by cooling air.
Focusing on the rod leads to more efficient
Can be transmitted without transmitting to the fiber 11.

[0014]

According to the first aspect of the present invention, a special solar light can be effectively transmitted to the fiber through the quartz rod, the heat transmitted to the fiber can be reduced, and the fiber can be protected from high heat. effective.

According to the second aspect, there is a special effect that the quartz rod and the fiber can be efficiently cooled.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a solar light propagation device of the present invention.

FIG. 2 is a partially cutaway side view of the solar light propagation device incorporated in and implemented in FIG. 1;

FIG. 3 is a partially cutaway front view of the solar light propagation device incorporated and implemented in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Condenser 2 Fresnel lens 3 Support 4 Sunlight propagation device 5 Quartz stick 6 Protection tube 7 Crevice 8 Heat radiating fin 9 Connection plate 10 Connecting heat conduction plate 11 Fiber 12 Tightening plate 13 Fiber fixing bush 14 Coacrat cooling circle Ring 15 Conical concentrator 20 Sensor housing 21, 22, 23 Sensor protection tube 24 Fine adjustment sensor for descent 25 Fine adjustment sensor for ascent 26 Fine adjustment sensor for stop tracking 30, 31, 32 Heat resistant photoconductor 33, 34, 35 Shade tube

Claims (2)

[Claims] 1. A solar light collected by a light collector is propagated to a fiber through a quartz rod having one end disposed at the bottom of the light collector.
In a solar propagation device that irradiates from the outer end of the fiber, a predetermined interval is provided between the quartz rod and the fiber, a concentrator is arranged between the quartz rod and the fiber, and the quartz rod and the fiber A solar light propagation device wherein the vicinity of an inner end is configured to be cooled by cooling air. 2. The solar light transmission device according to claim 1, wherein the quartz rod is fitted into a cylindrical heat radiation waterproof body having radiation fins and a plurality of cooling air holes.