JPH0845314A - Automatic solar tracking device - Google Patents

Abstract

(57) [Abstract] [Purpose] An object of the present invention is to provide an automatic solar tracking device having a simple structure and a sensor capable of quickly directing a light collector toward the sun. [Structure] The sensor 7 is mounted inside the device main body made of an opaque material, and the sunlight receiving surface of the device main body is formed into a cylindrical curved surface or a flat surface having an inclination, and the light receiving surface portion is vertically and horizontally oriented. A plurality of slits 9 are provided at intervals in
The ends of the slits are overlapped with each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvement of an automatic solar tracking device, and more particularly to a structure of a sensor for tracking solar light.

[0002]

2. Description of the Related Art In recent years, a technique has been developed and partially implemented, in which sunlight is tracked and collected by a condenser, and the sunlight is guided to an underground space by an optical fiber to be used as illumination light. There is. By the way, conventionally, in order to track the sunlight, a structure in which the trajectory of the sun is input to a computer in advance and the sunlight is tracked only by the computer, or a structure in which the computer and an optical sensor are combined to track the sunlight has been developed.

By the way, conventionally, when a sensor for tracking the sunlight is used, the computer puts the sunlight into the control range of the tracking sensor, or the rising start time is detected by direct sunlight, and the tracking sensor is combined with the rising sensor. A possible method is to include the control range of the sensor. As a sensor for tracking the sunlight, for example, the photodiode is surrounded by an opaque material, or the opaque material is arranged in the center to detect the difference in the amount of light with the photodiode by the shadow generated by the sunlight. There is a sensor that detects light by a phototransistor and raises and lowers it by a method or a similar method.

[0004]

In order to track sunlight with a sensor, the angle of the sun varies depending on the area, season, day and time of use. Therefore, if the size of the sensor to be tracked is small, control is required. There is a drawback that it takes time to put the sunlight in the range where it does, or it is difficult for the sunlight to enter.

The present invention has been made in view of the above points, and an object thereof is to provide an automatic solar tracking device having a sensor having a simple structure and capable of quickly directing a condenser toward the sun. And

[0006]

The present invention has the following constitution in order to solve the above problems. That is, the sensor is mounted inside the main body of the apparatus made of a non-translucent material.
In addition, the sunlight receiving surface of the apparatus body is configured as a cylindrical curved surface or a plane having an inclination. Further, a plurality of slits are provided on the light-receiving surface portion at intervals in the vertical and horizontal directions, and each slit is configured such that the end portions thereof overlap each other.

[0007]

According to the above-mentioned claim 1, when the angle of sunlight is different, the sensor is actuated through the slit corresponding to the height of the sun, so that the concentrator is quickly directed to the sun and the sunlight is efficiently emitted. Can be collected.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to FIGS. FIG. 1 shows the overall configuration of the automatic solar tracking device.
In FIG. 1, reference numeral 1 is a support stand for an automatic solar tracking device, and 2 is a condenser arranged on the support stand 1, which is configured as a rotating parabolic mirror. Reference numeral 3 denotes a reflecting mirror arranged at the front center of the paraboloid of revolution, which is a hyperboloidal mirror facing the condenser 2. Reference numeral 4 is a light receiving portion arranged in the center of the condenser 2. In the same device, the reflected light reflected by the paraboloid of revolution is reflected by the reflecting mirror 3 and then collected by the light receiving unit 4 and guided to a desired position by the optical fiber 5 and used for illumination, for example. Reference numeral 6 denotes a drive unit for moving the condenser 2 in the horizontal direction and the vertical direction, which is configured to house a motor.

Reference numeral 7 denotes a sensor, which uses, for example, a phototransistor. Reference numeral 8 denotes a cover that constitutes a sensor, and is made of an opaque material. The non-translucent material is, for example, a copper plate coated with antireflection black coating. The solar light receiving surface of the cover 8 is configured as a cylindrical curved surface or a flat surface having an inclination. Reference numeral 9 denotes a plurality of slits formed on the solar light receiving surface of the cover 8 at intervals in the vertical and horizontal directions, and the slits in the vertical direction are formed by overlapping end portions. The vertical length of each slit is about 5 mm, and the horizontal length is about 1 mm. Further, the slit is composed of, for example, three slits. In addition, depending on the elevation angle of the sun, light is entered into one of the slits for detection. Reference numeral 10 is a phototransistor mounted inside the cover 8.

[0010]

According to the automatic sunlight tracking device having the above structure, when the angle of sunlight is different, the sensor is actuated through the slit corresponding to the height of the sun so that the concentrator can be swiftly and accurately adjusted. It has the unique effect of being able to efficiently collect sunlight in the direction of. In addition, there is a unique effect that the tracking sensor does not deviate from the control range at the time of starting.

[Brief description of drawings]

FIG. 1 is a schematic side view of an automatic solar tracking device of the present invention.

FIG. 2 is an external perspective view of an optical sensor used in the automatic sunlight tracking device of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Support 2 Condenser 3 Reflector 4 Light receiving part 5 Optical fiber 6 Driving part 7 Sensor 8 Cover 9 Slit 10 Phototransistor

Claims (1)

[Claims] 1. A sensor is mounted inside a device body made of an opaque material, and a sunlight receiving surface of the device body is formed into a cylindrical curved surface or a plane having an inclination, and a light receiving surface portion is provided. Providing multiple slits with intervals in the vertical and horizontal directions,
In addition, an automatic solar tracking device is characterized in that each slit in the vertical direction is constituted by overlapping end portions.