JPH1153914A - Sunlight-tracking type sunlight condensing device - Google Patents
Sunlight-tracking type sunlight condensing deviceInfo
- Publication number
- JPH1153914A JPH1153914A JP9220140A JP22014097A JPH1153914A JP H1153914 A JPH1153914 A JP H1153914A JP 9220140 A JP9220140 A JP 9220140A JP 22014097 A JP22014097 A JP 22014097A JP H1153914 A JPH1153914 A JP H1153914A
- Authority
- JP
- Japan
- Prior art keywords
- limit switch
- horizontal swivel
- sunlight
- horizontal
- contact element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/20—Solar thermal
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/47—Mountings or tracking
Landscapes
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Cultivation Of Plants (AREA)
- Mounting And Adjusting Of Optical Elements (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、ビルの屋上等の
屋外に設置して太陽光を自動追尾して集光し、集光した
光線を光ファイバーを通して屋内に導入する集光装置に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light collecting device which is installed outdoors such as on the roof of a building, automatically tracks and collects sunlight, and introduces the condensed light beam indoors through an optical fiber.
【０００２】[0002]
【従来の技術】受光レンズの焦点に光ファイバー束の端
面を位置させて太陽光を集光する装置は大別して緯度経
度設定プログラム方式と光センサ追尾方式に分けられる
が、前者は設置場所毎のプログラムが必要である他、プ
ログラム状態を維持するため夜間も駆動しておくことが
必要で制御系、駆動系とも電力消費が大きい欠点があ
る。後者の光センサ追尾方式は太陽軌道プログラムが不
要である上、夜間給電も不要で電力消費が少ない利点が
ある。2. Description of the Related Art Devices for concentrating sunlight by positioning the end face of an optical fiber bundle at the focal point of a light receiving lens are roughly classified into a latitude / longitude setting program system and an optical sensor tracking system. In addition to this, it is necessary to drive the motor at night to maintain the program state, and there is a drawback that the power consumption is large in both the control system and the driving system. The latter optical sensor tracking method has the advantage that it does not require a solar orbit program, does not require nighttime power supply, and has low power consumption.
【０００３】[0003]
【発明が解決しようとする課題】本発明は光センサ追尾
方式による太陽光集光装置において、俯仰及び水平旋回
部の構成を簡単にすると共に利用者が利用目的に応じて
太陽光を必要とする時間だけ装置を稼動できる集光装置
を提供するものである。DISCLOSURE OF THE INVENTION The present invention relates to a solar light concentrator using an optical sensor tracking method, which simplifies the structure of a vertical and horizontal turning section and requires a user to use sunlight according to the purpose of use. An object of the present invention is to provide a light collecting device that can operate the device only for a certain time.
【０００４】[0004]
【課題を解決するための手段】本発明装置は、円環状の
固定台座上に水平旋回台とその回動駆動装置が支承され
ると共に前記水平旋回台上に集光ユニットと追尾用光セ
ンサを搭載している俯仰部とその駆動装置が支持された
太陽光集光装置において、前記水平旋回台又は前記固定
台座のいずれかにリミットスイッチが固設されると共に
前記リミットスイッチを固設していない前記水平旋回台
又は前記固定台座に前記リミットスイッチを挟んで追尾
開始位置設定手段と停止位置設定手段が夫々位置調節可
能に設けられ、前記水平旋回台は毎朝設定時に停止位置
から東廻りに駆動され前記リミットスイッチが前記起動
位置設定手段に当接した後は前記光センサ出力によって
制御されて西廻りに駆動されて前記停止位置設定手段に
よって停止されるものであって装置の稼動時間は前記各
設定手段の位置を調節することによって自由に設定でき
るものである。上記において光センサは、一対の光電素
子が近接して設けられたユニットが、水平角用及び仰角
用として２個１組とされたものであって合計４つの光電
素子出力が制御系に供給されるものであってその詳細は
実公平６−３２５６９に開示されているものである。本
発明装置において電源供給タイマは常時作動していて予
め設定された時刻に装置の電源を投入する。即ち毎朝設
定時刻に水平旋回台が起動位置に復帰して動作を開始
し、その後は専ら光センサ出力に基づいて水平旋回台及
び俯仰部が駆動制御される。また、装置が停止位置設定
手段によって停止した後はタイマ回路を除く全ての回路
の給電が停止される。According to the apparatus of the present invention, a horizontal swivel and a rotation driving device are supported on an annular fixed pedestal, and a condensing unit and a tracking optical sensor are mounted on the horizontal swivel. In the solar concentrator in which the mounted elevating part and its driving device are supported, a limit switch is fixed to either the horizontal swivel or the fixed pedestal, and the limit switch is not fixed. A tracking start position setting means and a stop position setting means are provided on the horizontal swivel or the fixed pedestal with the limit switch interposed therebetween so as to be position adjustable, and the horizontal swivel is driven eastward from the stop position at the time of setting every morning. After the limit switch comes into contact with the start position setting means, the limit switch is driven by the light sensor output and driven westward and stopped by the stop position setting means. It is the the a and operating time of the device in which can be freely set by adjusting the position of the respective setting means. In the above, the optical sensor is a unit in which a pair of photoelectric elements are provided in proximity to each other for a horizontal angle and an elevation angle, and a total of four photoelectric element outputs are supplied to the control system. The details are disclosed in Japanese Utility Model Publication No. 6-32569. In the apparatus of the present invention, the power supply timer is always operating and turns on the power of the apparatus at a preset time. That is, at a set time each morning, the horizontal turntable returns to the starting position and starts operation, and thereafter, the horizontal turntable and the elevation unit are drive-controlled exclusively based on the output of the optical sensor. After the apparatus is stopped by the stop position setting means, power supply to all circuits except the timer circuit is stopped.
【０００５】[0005]
【発明の実施の形態】図１において、１は円環状の固定
台座であって中心に回動用枢軸１０が垂設されている。
２は水平旋回台であって、回動用枢軸１０に軸支される
と共に固定台座のレール１ａ上に車輪３によって支持さ
れて真南を中心として左右に夫々約１２０°の範囲で回
動往復する。１１は台座外周面１ｂに張設固定したチェ
ーンであって駆動装置については後述する。４は、多数
の集光ユニット５と太陽光追尾用光センサ６を搭載した
円板状の支持枠７と裏面側に固定した半円弧フレーム８
からなる俯仰部であって、水平旋回台上に固設した駆動
支持部９によって約９０°の範囲で回動制御される。１
２は半円弧フレーム８の外周に張設固定したチェーン、
１３は制御装置、１４はモータカバーである。集光ユニ
ット５は直径約３０ｃｍの受光レンズの焦点に光ファイ
バ端２０を位置調節可能に固定したものであって焦点直
径は約４ｍｍである。光センサは図３に示すように垂直
用６Ａ、水平用６Ｂの２つのセンサを備えると共に夫々
のセンサは近接した一対の光電素子２１，２２を備えて
いる。なお、このセンサは実公平６−３２５６９として
公知のものであるので詳細説明は省略する。本発明装置
の全体は図４に示すように半球状の透明ドーム１５内に
収容され、年中稼動する。１６はハウジング、１７は保
守用出入口である。水平旋回台２は、該台上に固定した
モータ２５によって減速機２６を介して駆動される。駆
動軸２７はフレーム側部に固定した軸受２８に支持さ
れ、先端部のスプロケット２９はチェーン１１と噛合し
て回転する。俯仰部の支持枠７の半円弧フレーム８は、
断面Ｔ型に構成され、駆動支持部９内において両側リム
部８ａが夫々の内外面を２組のローラペア３１，３２に
よって挟持されて回動自在に支持されている。３０は水
平旋回台上に垂設された一対の側板であって各ローラを
支持している。３３は駆動モータ、３４は減速伝導装
置、３５は駆動軸、３６はチェーン１２と噛合して回転
するスプロケットである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, reference numeral 1 denotes an annular fixed pedestal, on which a pivot 10 for rotation is vertically suspended.
Reference numeral 2 denotes a horizontal swivel, which is pivotally supported by a swiveling pivot 10 and supported by wheels 3 on a rail 1a of a fixed pedestal. . Reference numeral 11 denotes a chain stretched and fixed to the pedestal outer peripheral surface 1b, and a drive device will be described later. Reference numeral 4 denotes a disk-shaped support frame 7 on which a large number of light collecting units 5 and a solar tracking optical sensor 6 are mounted, and a semicircular frame 8 fixed to the back side.
, Which is controlled to rotate in a range of about 90 ° by a drive support unit 9 fixed on a horizontal swivel table. 1
2 is a chain stretched and fixed to the outer periphery of the semicircular frame 8,
13 is a control device, and 14 is a motor cover. The light collecting unit 5 has an optical fiber end 20 fixed to the focal point of a light receiving lens having a diameter of about 30 cm so as to be position adjustable, and has a focal diameter of about 4 mm. As shown in FIG. 3, the optical sensor includes two sensors 6A for vertical and 6B for horizontal, and each sensor includes a pair of photoelectric elements 21 and 22 that are close to each other. This sensor is publicly known as Japanese Utility Model Publication No. 6-32569, and a detailed description thereof will be omitted. The entire apparatus of the present invention is housed in a hemispherical transparent dome 15 as shown in FIG. Reference numeral 16 denotes a housing, and 17 denotes an entrance for maintenance. The horizontal swivel 2 is driven via a speed reducer 26 by a motor 25 fixed on the horizontal swivel. The drive shaft 27 is supported by a bearing 28 fixed to the side of the frame, and a sprocket 29 at the distal end meshes with the chain 11 and rotates. The semicircular frame 8 of the support frame 7 of the raising part
It has a T-shaped cross section, and both side rim portions 8a are rotatably supported in the drive support portion 9 by sandwiching the inner and outer surfaces thereof by two pairs of rollers 31 and 32. Reference numeral 30 denotes a pair of side plates suspended on a horizontal swivel table and supports each roller. 33 is a drive motor, 34 is a deceleration transmission device, 35 is a drive shaft, and 36 is a sprocket that meshes with the chain 12 and rotates.
【０００６】上記装置において各駆動及び減速機構自体
は周知の構成であるが、本発明においてはチェーンとス
プロケット半円弧フレーム８の外周及び固定台座１の外
周１ｂにチェーン１２，１１を固着して軽量化を図ると
ともに用途に応じて自由な組立てができるようにしてい
る。図７において４０は水平旋回台上に設けられたリミ
ットスイッチであって位置を可変できるように設けても
よい。４１は起動位置設定手段としての接触子、４２は
停止位置設定用の接触子であって共に位置調節可能であ
る。図８において４５はリミットスイッチ、４６は垂直
検知用接触子、４７は水平検知用接触子である。In the above-mentioned apparatus, each drive and deceleration mechanism has a well-known structure. In the present invention, however, the chains 12, 11 are fixed to the outer periphery of the chain and the sprocket half-arc frame 8 and the outer periphery 1b of the fixed base 1 to reduce the weight. And assemble freely according to the application. In FIG. 7, reference numeral 40 denotes a limit switch provided on a horizontal swivel table, which may be provided so that its position can be changed. 41 is a contact as a starting position setting means, and 42 is a contact for setting a stop position, both of which can be adjusted in position. In FIG. 8, 45 is a limit switch, 46 is a contact for vertical detection, and 47 is a contact for horizontal detection.
【０００７】本発明において装置は図７の方位に設置さ
れていて水平旋回台２はリミットスイッチ４０を停止位
置設定手段４２に当接させて停止している。タイマによ
る毎朝設定時、例えば７時になるとモータ３３が駆動さ
れて俯仰部４を一旦水平又は垂直位置にした後集光面の
仰角を３０°〜４５°にすると同時にモータ２５が駆動
されて水平旋回台２を矢方向に動かして起動用接触子４
１の位置まで回動する。リミットスイッチ４０の信号に
よってモータ２５が停止され、所定時間後に制御装置１
３の出力に接続される。制御装置には光センサ６の出力
が入力され、該入力信号によってモータ３３及び２５が
制御されて各集光ユニットが太陽光を受光する。なおモ
ータ３３及び２５は汎用交流又は直流モータであって回
転数は１０００分の１〜１５００分の１に減速される。
太陽光追尾中、集光ユニット５は水平旋回台２及び俯仰
部４によって常時三次元的に駆動されている。In the present invention, the apparatus is installed in the orientation shown in FIG. 7, and the horizontal swivel 2 is stopped by bringing the limit switch 40 into contact with the stop position setting means 42. At the time of setting every morning by a timer, for example, at 7:00, the motor 33 is driven to temporarily move the elevation unit 4 to the horizontal or vertical position, and then the elevation angle of the light-collecting surface is set to 30 ° to 45 °, and at the same time, the motor 25 is driven to rotate horizontally. The starting contact 4 by moving the base 2 in the direction of the arrow
Rotate to position 1. The motor 25 is stopped by the signal of the limit switch 40, and after a predetermined time, the control device 1
3 output. The output of the optical sensor 6 is input to the control device, and the motors 33 and 25 are controlled by the input signal so that each light collecting unit receives sunlight. The motors 33 and 25 are general-purpose AC or DC motors, and the rotation speed is reduced to 1/1000 to 1/1500.
During the tracking of sunlight, the condensing unit 5 is always driven three-dimensionally by the horizontal swivel 2 and the elevating unit 4.
【０００８】[0008]
【効果】本発明装置は設置が簡単でしかも太陽光を必要
とする時刻又は時間に応じて接触子４１又は／及び４２
の位置を変更することによって簡単に調節できるので室
内照明は勿論、植物培養等太陽光線を所望する装置に無
駄な動力を消費せずに効果的に利用できる。The device according to the present invention is simple to install, and according to the time or time when sunlight is required, the contacts 41 and / or 42
Can be easily adjusted by changing the position of the device, so that it can be effectively used without consuming wasteful power for a device that desires sunlight such as plant culture as well as indoor lighting.
【図１】本発明装置の要部斜視図。FIG. 1 is a perspective view of a main part of a device of the present invention.
【図２】俯仰部の表面図。FIG. 2 is a surface view of a raised part.
【図３】光センサの平面図。FIG. 3 is a plan view of an optical sensor.
【図４】装置の一部断面図。FIG. 4 is a partial cross-sectional view of the device.
【図５】装置の駆動部を示す一部縦断側面図。FIG. 5 is a partially longitudinal side view showing a driving unit of the apparatus.
【図６】俯仰部の支持装置を示す部分側面図。FIG. 6 is a partial side view showing a supporting device of the elevating part.
【図７】水平旋回台の回動範囲制御手段の位置関係を示
す平面図。FIG. 7 is a plan view showing a positional relationship of a rotation range control unit of the horizontal swivel.
【図８】俯仰部の可動範囲規制手段を示す側面図。FIG. 8 is a side view showing a movable range restricting means of the elevating part.
１ 固定台座 ２ 水平旋回台 ３ 車輪 ４ 俯仰部 ５ 集光ユニット ６ 光センサ ７ 支持枠 ８ 半円弧フレーム ９ 駆動支持部 １０ 回動枢軸 １１ チェーン １２ チェーン １３ 制御装置 １５ 透明ドーム １６ ハウジング ２１，２２ 光電素子 ２５ モータ ２６ 減速機 ２７ 駆動軸 ２８ 軸受 ２９ スプロケット ３０ 支持側板 ３１，３２ ローラペア ３３ モータ ３４ 減速機 ３５ 駆動軸 ３６ スプロケット ４０，４５ リミットスイッチ ４１，４２ 接触子 ４６，４７ 接触子 DESCRIPTION OF SYMBOLS 1 Fixed pedestal 2 Horizontal turntable 3 Wheel 4 Elevation part 5 Condensing unit 6 Optical sensor 7 Support frame 8 Semicircular frame 9 Drive support part 10 Rotating pivot 11 Chain 12 Chain 13 Control device 15 Transparent dome 16 Housing 21, 22 Photoelectric Element 25 Motor 26 Reducer 27 Drive shaft 28 Bearing 29 Sprocket 30 Support side plate 31, 32 Roller pair 33 Motor 34 Reducer 35 Drive shaft 36 Sprocket 40, 45 Limit switch 41, 42 Contact 46, 47 Contact
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ // Ａ０１Ｇ 7/00 ６０１ Ｇ０１Ｗ 1/12 Ｄ Ｇ０１Ｗ 1/12 Ｇ０２Ｂ 7/18 Ｄ ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification symbol FI // A01G 7/00 601 G01W 1/12 D G01W 1/12 G02B 7/18 D
Claims (1)
回動駆動装置が支承されると共に前記水平旋回台上に集
光ユニットと追尾用光センサを搭載している俯仰部とそ
の駆動装置が支持された太陽光集光装置において、前記
水平旋回台又は前記固定台座のいずれかにリミットスイ
ッチが固設されると共に前記リミットスイッチを固設し
ていない前記水平旋回台又は前記固定台座に前記リミッ
トスイッチを挟んで追尾開始位置設定手段と停止位置設
定手段が夫々位置調節可能に設けられ、前記水平旋回台
は毎朝設定時に停止位置から東廻りに駆動され前記リミ
ットスイッチが前記起動位置設定手段に当接した後は前
記光センサ出力によって制御されて西廻りに駆動されて
前記停止位置設定手段によって停止されることを特徴と
する太陽光追尾式太陽光集光装置。An elevation section having a horizontal turntable and a rotation driving device supported on an annular fixed base, and a converging unit and a tracking optical sensor mounted on the horizontal turntable and driving thereof. In the solar light concentrating device in which the device is supported, a limit switch is fixed to either the horizontal swivel or the fixed pedestal and the horizontal swivel or the fixed pedestal without the limit switch fixed. A tracking start position setting means and a stop position setting means are provided so as to be adjustable in position with the limit switch interposed therebetween, and the horizontal swivel table is driven eastward from a stop position every morning when setting, and the limit switch is turned on by the start position setting means. After being in contact with the sun, is driven by the optical sensor output and driven westward and is stopped by the stop position setting means. Sunlight collector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9220140A JPH1153914A (en) | 1997-07-31 | 1997-07-31 | Sunlight-tracking type sunlight condensing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9220140A JPH1153914A (en) | 1997-07-31 | 1997-07-31 | Sunlight-tracking type sunlight condensing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1153914A true JPH1153914A (en) | 1999-02-26 |
Family
ID=16746532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9220140A Pending JPH1153914A (en) | 1997-07-31 | 1997-07-31 | Sunlight-tracking type sunlight condensing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1153914A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100600934B1 (en) | 2005-07-15 | 2006-07-13 | (주) 찬성에너지 | Apparatus for concentrating solar energy |
| WO2006081721A1 (en) * | 2005-02-06 | 2006-08-10 | Xiaoping Gu | Sunlight reflector for improving the illumination for the cold side of the building |
| KR100712726B1 (en) | 2006-05-08 | 2007-05-04 | 현대건설주식회사 | Apparatus for collecting light |
| WO2008102980A1 (en) * | 2007-02-20 | 2008-08-28 | Yun Se Kim | Complex generator using solar and wind and wave |
| JP2008270698A (en) * | 2007-04-19 | 2008-11-06 | Daulenc Co Ltd | Solar power generator |
| WO2009069598A1 (en) * | 2007-11-26 | 2009-06-04 | Mitaka Kohki Co., Ltd. | Sun tracking light collecting apparatus |
| WO2009069599A1 (en) * | 2007-11-26 | 2009-06-04 | Mitaka Kohki Co., Ltd. | Sun tracking light collecting apparatus |
| WO2010050467A1 (en) * | 2008-10-27 | 2010-05-06 | 三鷹光器株式会社 | Heliostat drive mechanism |
| JP2011512017A (en) * | 2007-09-03 | 2011-04-14 | 柱 平 尹 | SOUND TRACKING SENSOR UNIT AND SOUND TRACKING DEVICE EQUIPPED WITH THE SUN TRACKING SENSORUNITY |
| KR101097671B1 (en) | 2008-09-11 | 2011-12-22 | 원앤원산업개발주식회사 | Sunlight-tracking control apparatus for solar cell module panel |
| CN108382611A (en) * | 2018-01-23 | 2018-08-10 | 倪惠芳 | A kind of aerospace outdoor illumination |
-
1997
- 1997-07-31 JP JP9220140A patent/JPH1153914A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006081721A1 (en) * | 2005-02-06 | 2006-08-10 | Xiaoping Gu | Sunlight reflector for improving the illumination for the cold side of the building |
| KR100600934B1 (en) | 2005-07-15 | 2006-07-13 | (주) 찬성에너지 | Apparatus for concentrating solar energy |
| KR100712726B1 (en) | 2006-05-08 | 2007-05-04 | 현대건설주식회사 | Apparatus for collecting light |
| WO2008102980A1 (en) * | 2007-02-20 | 2008-08-28 | Yun Se Kim | Complex generator using solar and wind and wave |
| JP2008270698A (en) * | 2007-04-19 | 2008-11-06 | Daulenc Co Ltd | Solar power generator |
| JP2011512017A (en) * | 2007-09-03 | 2011-04-14 | 柱 平 尹 | SOUND TRACKING SENSOR UNIT AND SOUND TRACKING DEVICE EQUIPPED WITH THE SUN TRACKING SENSORUNITY |
| WO2009069598A1 (en) * | 2007-11-26 | 2009-06-04 | Mitaka Kohki Co., Ltd. | Sun tracking light collecting apparatus |
| WO2009069599A1 (en) * | 2007-11-26 | 2009-06-04 | Mitaka Kohki Co., Ltd. | Sun tracking light collecting apparatus |
| KR101097671B1 (en) | 2008-09-11 | 2011-12-22 | 원앤원산업개발주식회사 | Sunlight-tracking control apparatus for solar cell module panel |
| WO2010050467A1 (en) * | 2008-10-27 | 2010-05-06 | 三鷹光器株式会社 | Heliostat drive mechanism |
| CN108382611A (en) * | 2018-01-23 | 2018-08-10 | 倪惠芳 | A kind of aerospace outdoor illumination |
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