JPH0571811U - Solar concentrating transmitter - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a sunlight concentrating and transmitting device that eliminates chromatic aberration due to a lens and transmits sunlight indoors at low cost. [Structure] A pair of parabolic reflectors 1 and 2 for concentrating sunlight into parallel light, which are installed on a common pedestal that rotates so as to always face the sun by a sun tracking device, and concentrate them by these The first and second plane reflecting mirrors 3 and 4 for sequentially transmitting the parallel sun light thus generated, and an optical duct B for transmitting the reflected light from the plane reflecting mirrors 3 and 4 to a required place are provided. The plane reflecting mirror 3 has a horizontal line passing through the center thereof as a horizontal rotation axis and is 1/2 turn of each of the curved reflecting mirrors.
The vertical axis of the gantry is set as a vertical line passing through the center of the second plane reflecting mirror 4, and the second horizontal reflecting mirror 4 is fixed, and a light flux passing space 5a is formed in the rotative gear 6 around the vertical line of the gantry. Was established.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a sunlight concentrating and transmitting device for transmitting and supplying sunlight to a room or a shaded area.

[0002]

[Prior Art]

 Conventionally, as a method for transmitting sunlight to a room, many examples have been proposed in which a Fresnel lens is used as the light converging means and an optical fiber is used as the transmitting means, and some of them have been put to practical use.

[0003]

[Problems to be solved by the device]

 However, this method has problems of chromatic aberration due to the Fresnel lens and high cost of the optical fiber.

[0004]

[Means for Solving the Problems]

 The present invention has been proposed to solve the above-mentioned problems.It condenses sunlight, which is installed on a common mount that is rotationally driven by the sun tracking device so as to always face the sun. A pair of curved reflecting mirrors that make parallel light, a first plane reflecting mirror and a second plane reflecting mirror that sequentially reflect and transmit parallel sunlight concentrated by the curved reflecting mirror, and light reflected by the respective plane reflecting mirrors. And a light duct for transmitting light to a desired place, and the first plane reflecting mirror is a half rotation of each of the curved reflecting mirrors with a horizontal line passing through the center of the reflecting mirror as a horizontal rotation axis. The vertical rotation axis is a vertical line passing through the center of the second flat reflecting mirror, the second flat reflecting mirror is fixed, and a light flux passing gap is provided in the rotary driving gear around the same vertical line of the mount. Related to the solar concentrating and transmitting device characterized by It is.

[0005]

[Action]

 Since the present invention is configured as described above, parallel sun light is concentrated by a pair of curved reflecting mirrors that are installed oppositely on a mount that is rotationally driven by the sun tracking device so as to always face the sun. It is sequentially reflected by the first and second flat reflecting mirrors installed on the same mount and transmitted to a predetermined place through an optical duct far cheaper than the optical fiber.

Then, the first plane reflecting mirror on the gantry has a horizontal line passing through the center thereof as a horizontal rotation axis, and the plane reflecting mirror is set to ½ rotation of each curved reflecting mirror, and further the concave mirror. And, the second plane reflecting mirror is fixed by setting the vertical rotation axis of the common mount of the plane reflecting mirror to a vertical line passing through the center of the second plane reflecting mirror. Therefore, the concentrated reflected light from the second plane reflecting mirror is transmitted to the optical duct through the light flux passing gap provided in the gantry driving rotary gear.

[0007]

【Example】

The present invention will be described below with reference to the illustrated embodiments. A is an optical device configured to always face the sun by a sun tracking device. The concave type parabolic reflector 1 for concentrating sunlight and the reflection so as to return the condensed light by the reflecting mirror 1 to parallel light. It consists of a mirror 1 and a concave parabolic reflector 2 installed so that the focal point is at the same position, and the parallel sunlight reflected by the mirror 2 and passing through the central through hole 1a of the reflector 1 The route is changed by the first flat reflecting mirror 3 and the second flat reflecting mirror 4, and the light is introduced into the vertically arranged optical duct B. The optical duct B is composed of a straight portion B ₁ having a reflective material attached to its inner surface and a bent portion B ₂ whose optical path can be freely changed by adjusting the angle of the plane mirror 5 arranged in the duct. The concentrated parallel sunlight introduced from the optical device A is transmitted to a required place.

With respect to the vertical sun tracking of each of the concave mirrors 1 and 2, the horizontal plane passing through the center of the first plane reflecting mirror 3 is used as the axis of rotation, so that the plane reflecting mirror 3 of each of the concave mirrors 1 and 2 is The number of rotations can be 1/2, and the second flat reflecting mirror 4 can be fixed. The sun tracking of the condensing unit composed of the optical device A is to detect the relative position of the sunlight by a sunlight sensor and track it with two axes, horizontal and vertical. As described above, the horizontal line passing through the center of the plane reflecting mirror 3 is used, and the vertical axis is a vertical line passing through the center of the plane reflecting mirror 4.

That is, the concave mirrors 1 and 2 are installed on a common mount, the mount is rotated about a horizontal axis through an arbitrary drive means such as an expandable arm system, and a gap 6 for allowing a light beam to pass through to the center portion. It is rotated by the shaft drive method using the gear 6 having a. In the embodiment of the optical device shown in FIG. 3, instead of the concave type parabolic reflector 2, a convex type parabolic reflector 2'is used.

[0010]

[Effect of the device]

 In the present invention, as described above, a pair of curved lines is installed on a pedestal that is rotationally driven so that the sunlight condensing portion is directly confronted with the sunlight that condenses the sunlight into normal light. An optical duct is used as a means for eliminating chromatic aberration by configuring it with an optical device consisting of a surface reflecting mirror, and for transmitting parallel sunlight concentrated by the optical device to a desired place through the first and second flat reflecting mirrors. By using it, the economic efficiency is improved as compared with the conventional device using the optical fiber.

Further, the first plane reflecting mirror has a horizontal line passing through the center thereof as a horizontal axis of rotation and is 1/2 turn of the curved reflecting mirror, and the curved mirror and the plane reflecting mirror are installed on a common mount. Then, the vertical rotation axis is set to a vertical line passing through the center of the second flat reflecting mirror, whereby the second flat reflecting mirror is fixed.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view showing an embodiment of a solar light concentrating and transmitting device according to the present invention.

FIG. 2 is an enlarged view of a main part of FIG.

FIG. 3 is a vertical sectional side view showing another embodiment of the device of the present invention.

[Explanation of symbols]

 1 Concave Parabolic Reflector 2 Concave Parabolic Reflector 2'Convex Parabolic Reflector 3 First Planar Reflector 4 Second Planar Reflector 5 Plane Mirror 6 Gear 6a Gap A Optical Device B Optical Duct

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification number Reference number within the agency FI technical display location // F21V 8/00 Z 2113-3K (72) Creator Tsutomu Nara 1 Kakinodai, Midori-ku, Yokohama-shi, Kanagawa -4 Miyanoshita Heights No. 203 (72) Inventor Taro Okamoto 3-8-22 Nishiazabu, Minato-ku, Tokyo

Claims (1)

[Scope of utility model registration request] 1. A pair of curved reflecting mirrors, which are installed on a common pedestal that is rotationally driven by a sun tracking device so as to always face the sun, and condense sunlight into parallel light, and the same curved reflection. A first flat reflecting mirror and a second flat reflecting mirror for sequentially reflecting and transmitting parallel sunlight concentrated by a mirror, and an optical duct for transmitting the reflected light from the respective flat reflecting mirrors to a required place, The first flat reflecting mirror has one of the curved reflecting mirrors with a horizontal line passing through the center of the reflecting mirror as a horizontal rotation axis.
1/2 rotation, the vertical axis of rotation of the gantry is a vertical line passing through the center of the second plane mirror, the second plane mirror is fixed, and the light flux is transmitted to the rotary drive gear around the same vertical line of the gantry. A solar concentrating and transmitting device, characterized in that it is provided with a passage gap.