WO2017063391A1

WO2017063391A1 - Sunlight illuminating system

Info

Publication number: WO2017063391A1
Application number: PCT/CN2016/088492
Authority: WO
Inventors: 谈国伟; 陶学勤; 谈叶婷; 薛威
Original assignee: 上海笙荣森电子有限公司
Priority date: 2015-10-15
Filing date: 2016-07-04
Publication date: 2017-04-20
Also published as: CN105135356A; CN105135356B

Abstract

A sunlight illuminating system, comprising a sunlight focusing device and an elastic flexible bendable light guide tube structure capable of stretching and bending. A horizontal deceleration step motor (8) drives the sunlight focusing device to rotate about the output shaft of the horizontal deceleration step motor (8). A vertical deceleration step motor (11) drives the elastic flexible bendable light guide tube structure to stretch and bend. The horizontal deceleration step motor (8) and the vertical deceleration step motor (11) are both connected to a control unit. The elastic flexible bendable light guide tube structure is in communication with an optical path of a sunlight distributing and steering light-guide management system. The present invention is low in costs, efficient, and durable.

Description

Solar lighting system

Technical field

The present invention relates to a system apparatus for introducing sunlight into a light-receiving environment to meet the light and heat requirements of these environments. More specifically, the present invention employs a set of parabolic concave/convex mirrors for sunlight. After gathering, the above-mentioned concentrated sunlight is distributed and transmitted to the desired light environment by using an internal reflection tube.

Background technique

For light-receiving environments (completely dark, or with natural daylight but still need to be supplemented with lighting), usually using a power source to provide illumination, this method consumes precious energy (by other energy sources with low conversion efficiency, paying huge High quality energy obtained from environmental costs). As we all know, sunlight is a healthy, energy-saving and environmentally friendly light. In the case of abundant sunlight during the day, it is unreasonable to use electric light source illumination. Especially in today's energy shortage and environmental problems, the use of power source lighting is a waste of energy! Therefore, we need to consider the use of solar lighting instead of daytime power-consuming lighting.

At present, the technical route of solar lighting is divided into direct method and indirect method. In short, the indirect method is to use solar panels for photo-electric conversion, and then convert the electricity generated for illumination. The solar-electric panel's light-to-electric conversion efficiency is only about 10%, and such low efficiency is destined to be of little value in the field. The direct method, which does not involve energy conversion, uses the principle of light reflection to direct sunlight into the light-receiving environment. There are two types of products currently in direct method: large diameter light pipe type light guide lighting system and optical fiber type solar light illumination system. Compared with the indirect method, although the efficiency of these two types is improved, the following shortcomings exist. First, the large-caliber light pipe type light guide illumination system does not have a sun tracking device, and its light receiving surface is fixed. The lighting effect varies greatly depending on the orientation and height angle of the sun. Large-diameter pipes pass through the walls and roofs of buildings, and the openings are too large to be detrimental to the building structure. Second, the optical fiber used in the optical fiber-optic solar illumination system has a high cost, and there is a reflection loss and a light-heating problem at the light-receiving end, resulting in a small optical load and a small concentration of light.

Summary of the invention

It is an object of the present invention to provide a direct method solar lighting system that is inexpensive and has good illumination.

In order to achieve the above object, the technical solution of the present invention provides a solar illumination system, which comprises a solar focusing device, which is fixedly coupled to a rear end of the solar focusing device. The elastic flexible flexible curved light guide tube structure, the solar light focusing device integrates the sunlight into a parallel beam of light and then introduces an elastic flexible bending light guide tube structure, and the horizontal direction deceleration stepping motor drives the sunlight focusing device around its output shaft. Swinging, so that the solar focusing device changes the heading angle with the change of the solar height angle, and the vertical direction deceleration stepping motor drives the elastic flexible bending light pipe structure to expand and contract, thereby driving the solar focusing device to face the sun, horizontal The direction deceleration stepping motor and the vertical direction stepping motor are connected to the control unit, and the elastic flexible bending light pipe structure is connected with the sunlight distribution and the light guiding management system optical path, and the sunlight distribution and the light guiding management system are The sunlight introduced by the elastically flexible curved light pipe structure is distributed to each desired light end.

Preferably, the solar focusing device comprises a parabolic concentrating convex mirror and a parabolic condensing concave mirror with a coaxial line and a focus, and the parabolic concentrating convex mirror is fixed above the parabolic condensing concave mirror, in a parabolic shape. The center of the concentrating concave mirror is formed with a hole, and the sunlight is reflected by the parabolic condensing concave mirror and the parabolic concentrating convex mirror twice, and then integrated into a parallel beam of light and passed through the hole to enter the inner reflective cone, the inner reflective cone The body is in communication with the optical path of the elastically flexible curved light pipe structure.

Preferably, the parabolic concentrating concave mirror is fixed on the concave mirror fixing portion, the parabolic condensing convex mirror is fixed on the convex mirror fixing portion by the adjusting device, and the convex mirror fixing portion is fixed on the concave mirror fixing portion. .

Preferably, the convex mirror fixing portion adopts a cross-shaped condensing convex mirror supporting arm.

Preferably, the parabolic concentrating concave mirror is either a whole lens or a splicing of at least two lenses.

Preferably, the vertical direction decelerating stepping motor has an output shaft and a Y-shaped bracket, and each of the two forks on the top of the Y-shaped bracket has a shaft hole, the level connected to the sunlight focusing device The output shaft of the direction reducing stepping motor penetrates into one shaft hole, and the other frame hole penetrates into the supporting frame rotating shaft, and the supporting frame rotating shaft is fixedly connected with the sunlight focusing device.

Preferably, the elastic flexible bending light pipe structure comprises a flexible filament spring and a plurality of reflective sheets, and the plurality of reflective sheets are connected in series by a spirally rising flexible filament spring.

Preferably, at each of the two corners of the sheet, a short fin with a short hole and a short narrow groove are provided, and a long narrow groove is provided in the middle of each of the reflective sheets, in all the reflective sheets. The current piece of reflective film, defined as a reflection sheet, is a reflection sheet adjacent to the current reflection sheet in the circumferential direction, and is defined as a reflection sheet of the second and the opposite side of the reflection sheet 1 and the reflection sheet 2 in the radial direction. , defined as a reflection of the film three as a group of reflective For each set of reflectors:

On the other hand, the short fin with holes penetrates into the short narrow groove on the second sheet, and then penetrates into the long narrow groove on the third sheet. The flexible filament spring is further shortened by the hole on the sheet. Pass through the holes in the fins.

Preferably, the retroreflective sheeting is a stainless steel retroreflective sheeting, preferably a cylindrically curved, inner surface polished stainless steel sheet.

Preferably, the solar light distribution and steering light management system comprises a main line communicating with the optical path of the elastic flexible bending light guide structure, and a plurality of branch lines are connected to the main path of the main line, and each branch line is respectively associated with the respective The light-receiving end light path is connected.

Compared with the current state of the art optical fiber solar lighting system, the present invention has the following advantages:

1. In the case of the same external dimensions, the present invention has a significant advantage in that the light receiving area is large, which means that transmitting more power of sunlight can illuminate a larger area of the desired light environment.

2. When sunlight enters the optical fiber from the air, the sunlight directly on the interface will reflect a part of it back, and there is reflection loss. However, the solution proposed by the invention allows the sunlight to propagate in the air all the time, and there is no loss of reflecting the sunlight back, and the efficiency is higher.

3. The cost of optical fiber is high and there is an aging problem. The proposed solution adopts a parabolic concave/convex glass mirror, a polished stainless steel sheet, and an inner reflective glass mirror light guide tube material, which is relatively low in cost, has no aging problem, and is durable.

DRAWINGS

Figure 1 is a front elevational view of the system apparatus of the present invention;

Figure 2 is a side view of the system apparatus of the present invention;

Figure 3 is a plan view of the system apparatus of the present invention;

Figure 4 is an isometric side view of the system apparatus of the present invention;

Figure 5 is a detailed view of the system device of the present invention;

Figure 6 is a cross-sectional view of the indoor lighting end;

Figure 7 is a detailed view of the structure of the elastic flexible bending light pipe.

detailed description

In order to make the present invention more apparent, the preferred embodiments are described in detail with reference to the accompanying drawings.

The solar lighting system proposed by the invention consists of the following five important functional components:

The solar light collecting device comprises: a parabolic concentrating convex mirror, a parabolic condensing concave mirror 2, a condensing concave mirror supporting frame 3, a condensing convex mirror supporting arm 4, a collecting convex mirror adjusting rod 5, a supporting frame rotation The shaft 6 and the inner reflective cone body 7. Description of each part and its assembly relationship: The parabolic concentrating concave mirror 2 may be an integral glass mirror or may be mounted on the concentrating concave mirror support frame 3 in several pieces (for example, eight lens assemblies). The concentrating concave mirror support frame 3 is welded into a frame structure by a stainless steel strip group, and functions as a skeleton for fixing related parts. The cross-shaped condensing convex mirror support arm 4 is welded and fixed to the condensing concave mirror support frame 3, and the parabolic concentrating convex mirror 1 is disposed at the distal end. At the same time, the parabolic concentrating convex mirror 1 is fixedly connected to the condensing convex mirror adjusting rod 5, and the parabolic concentrating convex mirror 1 can be adjusted by the screw fastening type so as to be in focus with the parabolic condensing concave mirror 2 coaxial line. In this way, the sunlight is reflected by the parabolic concentrating concave mirror 2 and the parabolic concentrating convex mirror twice, and then integrated into a parallel beam to pass through the central hole of the parabolic concentrating concave mirror 2 and the inner reflective cone behind it. 7. The inner reflective cone body 7 placed in the center of the concentrating concave mirror support frame 3 can allow the aforementioned collected light column to be slightly deflected but still reflected in the cylindrical body without leaking. Finally, the entire solar concentrating device forms a shaft-hole connection with the Y-shaped bracket 9 in the day tracking control device through the support frame rotating shaft 6, and is driven to rotate by the horizontal direction stepping motor 8 to make the solar concentrating device follow the sun. The height angle changes and the head angle is changed accordingly.

The tracking control device includes: a horizontal direction stepping motor 8, a Y-bracket 9, a bearing housing 10 with a bearing, a vertical direction stepping motor 11, and a tripod support 12. Description of each part and its assembly relationship: The Y-bracket 9 supports the horizontal end deceleration stepping motor 8 at the end of the support arm, and drives the aforementioned solar concentrating device to change the head-up angle. The central rotating shaft of the Y-shaped bracket 9 passes through the two bearing housings 10 with bearings and is driven to rotate by the vertical direction stepping motor 11 so that the sunlight collecting device changes direction toward the angle with the change of the azimuth angle of the sun. The bearing housing 10 with bearings and the vertical direction stepping motor 11 are mounted on the three-legged support 12. The single-chip computer calculates the sun azimuth and elevation angle according to the local time and latitude according to the preset program, and controls the horizontal direction deceleration stepping motor 8 and the vertical direction deceleration stepping motor 11 to rotate, so that the solar light gathering device is within a certain tolerance range. It is facing the sun.

The elastic flexible bending light pipe structure comprises: a flexible filament spring 13 and a stainless steel reflector 14 . Description of each part and its assembly relationship: The stainless steel reflector 14 is a stainless steel sheet whose cylindrical surface is curved and whose inner surface is polished, and has a short fin 23 with a hole, a short narrow groove 22, and a long narrow groove 24. As shown in Figure 7, three stainless steel reflectors 14 are grouped, and the order of installation of each group is as follows: stainless steel reflector 14 with holes The short fins 23 first pass through the short narrow grooves 22 of the stainless steel reflectors 14, and then pass through the long narrow grooves 24 of the stainless steel reflectors 34. After the three are integrated, the flexible filament springs 13 are passed through the stainless steel reflectors. A small hole in the short finned fin 23 of 14. By analogy, the foregoing process is repeated until all of the stainless steel retroreflective sheeting 14 is strung through the entire flexible filament spring 13. Thus, a light guide tube is obtained which is positioned with the flexible filament spring 13 as a skeleton, and the light guide tube is fixed at one end of the sunlight collecting device, opposite to the inner reflective cone body 7, and one end is fixed to the sunlight. The light guide head elbow 15 of the distribution and transfer light pipeline system is vertically connected to the opposite end. When the solar light collecting device is aligned with the sun and changed at different angles, the elastic flexible bending light pipe structure can be stretched and bent, and the sunlight reflected by the inner reflective cone body 7 can be internally reflected and then enters the light guiding main body. In the elbow 15, the solar light distribution and the light guiding pipeline system are entered.

The solar light distribution and the light guiding pipeline system comprises: a light guiding main pipe elbow 15, a light guiding main pipe 16, a light guiding pipe branch pipe joint 17, a light guiding branch pipe 18, and a light guiding branch pipe elbow 19. Description of each part and its assembly relationship: according to the order of solar light transmission and the actual piping requirements, the light guide main pipe elbow 15 is connected to the light guiding main pipe 16, and then connected to the light guiding pipe branch pipe section 17 at the required position, which will guide The light main pipe 16 branches and subsequently connects the light guiding branch pipe 18 and the light guiding branch pipe elbow 19. The pipeline components are combined and matched as needed until the lighting end light pipe 20 is connected. The outer part of the pipeline is covered with a rigid protective structure to protect and support the pipeline. The light guiding main bend elbow 15 and the light guiding branch elbow 19 are all reflective curved tubes in a circular cross section, and have a large bending radius to meet the requirements of sunlight transmission. The structure of the light-guiding pipe branch pipe joint 17 is described by taking one of the branches as an example, which is a circular section of the light-conducting main pipe 16 which is gradually laid out to the light-guiding branch pipe 18, and the angle between the two branches is as small as possible, and the intermediate portion is realized as much as possible. Small corners to meet solar transmission requirements.

The indoor lighting end includes an illumination end light pipe 20 and an illumination lamp head 21. Description of each part and its assembly relationship: The illumination end light pipe 20 is connected to the light guiding branch pipe 18 or the light guiding branch pipe elbow 19, and the sunlight light is transmitted to the end connected lighting head 21. The illuminating head 21 can be designed as a concentrating type or a diffusing type head as needed.

In addition to the solar light distribution, the light guide pipeline system, and the indoor lighting end, the outdoor equipment is placed in a transparent protective cover, which is windproof, rainproof and dustproof.

Claims

A solar illumination system, characterized in that it comprises a solar focusing device, and a telescopic flexible curved flexible light guiding tube structure is fixedly connected at a rear end of the solar focusing device, and the sunlight is fixed by the sunlight focusing device. After being integrated into a parallel beam of light, an elastic flexible bending light pipe structure is introduced, and the horizontal direction deceleration stepping motor (8) drives the solar focusing device to swing around its output axis, so that the solar focusing device changes with the change of the solar height angle. Head-up angle, vertical direction stepping motor (11) drives elastic flexible bending tube structure telescopic and curved, which drives the solar focusing device to keep facing the sun, horizontally decelerating stepping motor (8) and vertical direction deceleration The stepping motor (11) is connected to the control unit, and the elastic flexible bending light pipe structure is connected with the solar light distribution and the light guiding management system optical path, and the solar light distribution and the light guiding light management system will be guided by the elastic flexible bending. The sunlight introduced by the tube structure is distributed to each desired light end.
A solar illumination system according to claim 1, wherein said solar focusing means comprises a parabolic concentrating convex mirror (1) having a coaxial line and a focus, and a parabolic condensing concave mirror (2). The parabolic concentrating convex mirror (1) is fixed above the parabolic concentrating concave mirror (2), and a hole is formed in the center of the parabolic condensing concave mirror (2), and the sunlight is passed through a parabolic condensing concave mirror ( 2) After the double reflection with the parabolic concentrating convex mirror (1), a parallel beam of light is passed through the hole and enters the inner reflective cone body (7). The inner reflective cone body (7) and the elastic flexibility The curved light pipe structure is optically connected.
A solar illumination system according to claim 2, wherein said parabolic concentrating concave mirror (2) is fixed to a concave mirror fixing portion, and said parabolic condensing convex mirror (1) is adjusted The device is fixed to the convex mirror fixing portion, and the convex mirror fixing portion is fixed to the concave mirror fixing portion.
A solar illumination system according to claim 3, wherein said convex mirror fixing portion employs a cross-shaped condensing convex mirror support arm (4).
A solar illumination system according to claim 2, wherein said parabolic concentrating concave mirror (2) is either an integral lens or a splicing of at least two lenses.
A solar illumination system according to claim 1, wherein the output shaft of the vertical direction stepping motor (11) and the Y-bracket (9) are on the top of the Y-bracket (9). An axial hole is defined in each of the two forks, and an output shaft of the horizontal direction stepping motor (8) connected to the sunlight focusing device penetrates into one shaft hole and penetrates into the other shaft hole There is a supporting frame rotating shaft (6), and the supporting frame rotating shaft (6) is fixedly connected with the sunlight focusing device.
A solar lighting system according to claim 1 wherein said elastically flexible bending The light guide tube structure comprises a flexible filament spring (13) and a plurality of reflective sheets, and the plurality of reflective sheets are connected in series by a spirally rising flexible filament spring (13).
A solar illumination system according to claim 7, wherein at each of the two corner portions of each of the reflecting sheets, short fins (23) and short narrow grooves (22) are provided, Each of the reflectors is provided with a long narrow groove (24). Among all the reflectors, the current one is defined as a reflection sheet, and a reflection sheet adjacent to the current reflection sheet in the circumferential direction. Defined as a reflection sheet of the second and the opposite side of the reflection and the second of the two, which are defined as a set of reflective sheets, for each set of reflective sheets:

The short fins (23) on the opposite side of the sheet penetrate into the short narrow grooves (22) on the second sheet, and then penetrate into the long narrow grooves (24) on the third sheet, the flexible filament springs ( 13) Then pass through the hole in the short fin (23) on the sheet.
A solar illumination system according to claim 7, wherein said retroreflective sheeting comprises a stainless steel retroreflective sheeting (14), preferably a cylindrically curved, inner surface polished stainless steel sheet.
A solar illumination system according to claim 1, wherein said solar light distribution and steering light management system comprises a main line communicating with said optically flexible curved light guide structure optical path, and a plurality of branch pipes The road is connected to the main road of the main road, and each branch line is respectively connected to the respective optical path of the light-receiving end.