JP2008091156A - Luminaire - Google Patents

Luminaire Download PDF

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JP2008091156A
JP2008091156A JP2006269502A JP2006269502A JP2008091156A JP 2008091156 A JP2008091156 A JP 2008091156A JP 2006269502 A JP2006269502 A JP 2006269502A JP 2006269502 A JP2006269502 A JP 2006269502A JP 2008091156 A JP2008091156 A JP 2008091156A
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Prior art keywords
light source
source block
sway
line
block
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JP2006269502A
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JP4594916B2 (en
Inventor
Takuya Shinoda
卓哉 信田
Yoshihiro Sakashita
由浩 坂下
Katsuyoshi Jinbo
勝義 仁保
Masakazu Teraoka
正和 寺岡
Koichi Mitsujima
康一 密島
Kazuo Itano
和雄 板野
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Panasonic Electric Works Co Ltd
Panasonic Life Solutions Asahi Co Ltd
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Asahi Matsushita Electric Works Ltd
Matsushita Electric Works Ltd
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Priority to JP2006269502A priority Critical patent/JP4594916B2/en
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    • 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
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

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  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a luminaire which prevents a lifting operation of a light source block while the light source block is swinging. <P>SOLUTION: The luminaire includes an installation block 1 fixed to the ceiling face and a light source block 3 which supports the light source and is hung and supported through a hanging wire 2 from the installation block 1. Furthermore, the luminaire includes a lifting device which lifts and declines the light source block 3 by winding up or feeding the hanging wire 2, a swing detection part which outputs a detection signal respectively at the both end parts of swing when the light source block 3 swings, and a control part which forbids lifting operation for a prescribed time longer than one half of the maximum value of a swinging cycle of the light source block 3. Since the swinging detection signal is output without fail before the forbidden time elapses as long as the light source block 3 continues swinging, the lifting operation of the light source block 3 during the time the light source block 3 swings is certainly prevented. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、光源を保持する光源ブロックを昇降可能な照明器具に関するものである。   The present invention relates to a lighting fixture capable of moving up and down a light source block holding a light source.

従来から、天井面に固定される取付ブロックと、光源を保持し吊り線を介して取付ブロックに吊り下げ支持された光源ブロックとを備え、光源ブロックを昇降可能な照明器具が提供されている（例えば、特許文献１参照）。   2. Description of the Related Art Conventionally, there has been provided a lighting fixture that includes a mounting block that is fixed to a ceiling surface and a light source block that holds a light source and is supported by being suspended from the mounting block via a suspension line. For example, see Patent Document 1).

この種の照明器具を用いれば、住人の身長やインテリアに合わせて光源ブロックの高さを自由に変更することができる。
特開２００２−１０９９４８号公報 If this kind of lighting fixture is used, the height of the light source block can be freely changed in accordance with the height and interior of the resident.
JP 2002-109948 A

しかし、上記従来の照明器具において、光源ブロックが揺れている間に光源ブロックの昇降が行われると、光源ブロックが揺れていない場合に比べ、光源ブロックが他のものに当たって光源ブロックが当たったものや光源ブロック自身に傷がついてしまう可能性が高くなる。   However, in the above-mentioned conventional lighting fixture, when the light source block is raised and lowered while the light source block is shaken, compared to the case where the light source block is not shaken, There is a high possibility that the light source block itself is damaged.

本発明は、上記事由に鑑みて為されたものであり、その目的は、光源ブロックが揺れている間の光源ブロックの昇降動作が防止される照明器具を提供することにある。   This invention is made | formed in view of the said reason, The objective is to provide the lighting fixture by which the raising / lowering operation | movement of a light source block is prevented while the light source block is shaking.

請求項１の発明は、天井面に取り付けられる取付ブロックと、光源を保持し吊り線を介して取付ブロックに吊り下げ支持された光源ブロックと、取付ブロックと光源ブロックとの一方に保持されて吊り線を巻き取り又は繰り出しすることにより光源ブロックを取付ブロックに対して昇降させる昇降手段と、取付ブロックと光源ブロックとの一方に保持されて取付ブロックに対する光源ブロックの揺れであって所定の程度以上大きな揺れについて少なくとも揺れの両端でそれぞれ光源ブロックの揺れを検出する揺れ検出手段と、揺れ検出手段によって光源ブロックの揺れが検出されたときから所定の禁止時間にわたって昇降手段の動作を禁止する制御手段とを備え、禁止時間は、昇降手段によって最大限に吊り線が繰り出されたときの光源ブロックの揺れの周期の二分の一よりも長いことを特徴とする。   According to the first aspect of the present invention, there is provided a mounting block attached to a ceiling surface, a light source block that holds a light source and is supported by being suspended from the mounting block via a suspension line, and is held and suspended by one of the mounting block and the light source block. Lifting means for moving the light source block up and down relative to the mounting block by winding or unwinding the wire, and shaking of the light source block with respect to the mounting block held by one of the mounting block and the light source block, which is larger than a predetermined level A swing detecting means for detecting the swing of the light source block at both ends of the swing, and a control means for prohibiting the operation of the elevating means for a predetermined prohibition time after the swing detecting means detects the swing of the light source block. The prohibited time is the light source block when the hanging line is extended to the maximum by the lifting means. Characterized in that greater than one-half of the period of vibration of click.

この発明によれば、光源ブロックが揺れ続ける限り、禁止時間が経過する前に必ず再度揺れが検出されるから、光源ブロックが揺れている間の光源ブロックの昇降動作が確実に防止されることになる。   According to the present invention, as long as the light source block continues to shake, the shaking is always detected again before the prohibition time elapses, so that the raising and lowering operation of the light source block is reliably prevented while the light source block is shaking. Become.

請求項２の発明は、天井面に取り付けられる取付ブロックと、光源を保持し吊り線を介して取付ブロックに吊り下げ支持された光源ブロックと、取付ブロックと光源ブロックとの一方に保持されて吊り線を巻き取り又は繰り出しすることにより光源ブロックを取付ブロックに対して昇降させる昇降手段と、取付ブロックと光源ブロックとの一方に保持されて取付ブロックに対する光源ブロックの揺れであって所定の程度以上大きな揺れについて少なくとも揺れの両端でそれぞれ光源ブロックの揺れを検出する揺れ検出手段と、揺れ検出手段によって光源ブロックの揺れが検出されたときから禁止時間にわたって昇降手段の動作を禁止する制御手段と、昇降手段によって繰り出されている吊り線の長さを検出する吊り線長検出手段とを備え、制御手段は、禁止時間を、吊り線長検出手段によって検出されている吊り線の長さが長いほど長く、且つ、吊り線長検出手段によって検出されている吊り線の長さでの光源ブロックの揺れの周期の二分の一よりも長くすることを特徴とする。   According to a second aspect of the present invention, there is provided a mounting block that is attached to the ceiling surface, a light source block that holds the light source and is supported by being suspended from the mounting block via a suspension line, and is held and suspended by one of the mounting block and the light source block. Lifting means for moving the light source block up and down relative to the mounting block by winding or unwinding the wire, and shaking of the light source block with respect to the mounting block held by one of the mounting block and the light source block, which is larger than a predetermined level A swing detecting means for detecting the swing of the light source block at both ends of the swing, a control means for prohibiting the operation of the lifting means for a prohibited time after the swing detecting means detects the swing of the light source block, and the lifting means Suspension line length detecting means for detecting the length of the suspension line fed out by the The means increases the prohibition time as the length of the suspension line detected by the suspension line length detection means is longer, and the light source block swings at the length of the suspension line detected by the suspension line length detection means. It is characterized by being longer than one half of the period.

この発明によれば、光源ブロックが揺れ続ける限り、禁止時間が経過する前に必ず再度揺れが検出されるから、光源ブロックが揺れている間の光源ブロックの昇降動作が確実に防止されることになる。   According to the present invention, as long as the light source block continues to shake, the shaking is always detected again before the prohibition time elapses, so that the raising and lowering operation of the light source block is reliably prevented while the light source block is shaking. Become.

請求項３の発明は、請求項１又は請求項２の発明において、禁止時間は１．５秒よりも長く且つ５秒よりも短いことを特徴とする。   The invention of claim 3 is characterized in that, in the invention of claim 1 or 2, the prohibition time is longer than 1.5 seconds and shorter than 5 seconds.

請求項４の発明は、請求項１〜３のいずれかの発明において、吊り線は３本であって、鉛直方向から見た光源ブロックの外形は半径が４０√３ｍｍ以上の円形状であって、水平な断面における吊り線の間隔は、上記円形状に内接する正三角形の一辺の長さ以下であって且つ１２０ｍｍ以上であることを特徴とする。   The invention of claim 4 is the invention of any one of claims 1 to 3, wherein there are three suspension lines, and the outer shape of the light source block viewed from the vertical direction is a circular shape with a radius of 40√3 mm or more. The interval between the suspension lines in the horizontal cross section is not more than the length of one side of the equilateral triangle inscribed in the circular shape and not less than 120 mm.

請求項５の発明は、請求項１〜４のいずれかの発明において、吊り線は３本であって、揺れ検出手段は、各吊り線の揺れに基づいて光源ブロックの揺れを検出することを特徴とする。   According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects, the number of suspending lines is three, and the swing detecting means detects the swing of the light source block based on the swing of each suspended line. Features.

請求項６の発明は、請求項１〜３のいずれかの発明において、吊り線は４本以上であって、揺れ検出手段は、吊り線うち３本以上の揺れに基づいて光源ブロックの揺れを検出することを特徴とする。   The invention of claim 6 is the invention according to any one of claims 1 to 3, wherein there are four or more suspending lines, and the shake detecting means detects the shake of the light source block based on the sway of three or more of the suspending lines. It is characterized by detecting.

請求項７の発明は、請求項５の発明において、鉛直方向から見た光源ブロックの外形は円形状であって、揺れ検出手段は、各吊り線に対して１個ずつ設けられてそれぞれ対応する吊り線が所定の検出方向に所定の程度以上揺れたときに揺れを検出する吊り線揺れ検出装置を備え、各２個の吊り線揺れ検出装置の検出方向は、鉛直方向から見て各吊り線揺れ検出装置が対応する吊り線と光源ブロックの中心とを結ぶ直線同士がなす角ずつ異なることを特徴とする。   According to a seventh aspect of the present invention, in the fifth aspect of the present invention, the outer shape of the light source block viewed from the vertical direction is a circular shape, and one shake detecting means is provided for each suspension line and corresponds to each. Provided with a sway detection device that detects a sway when the swaying wire sways in a predetermined direction more than a predetermined level. The detection direction of each of the two swaying device detection devices is as shown in the vertical direction. The swing detection device is characterized in that the angle formed by the straight lines connecting the corresponding suspension line and the center of the light source block is different.

請求項８の発明は、請求項５の発明において、水平な断面における吊り線の配置は正三角形の頂点の配置であり、揺れ検出手段は、各吊り線に対して１個ずつ設けられてそれぞれ対応する吊り線が所定の検出方向に所定の程度以上揺れたときに揺れを検出する吊り線揺れ検出装置を備え、各２個の吊り線揺れ検出装置の検出方向は１２０°ずつ異なることを特徴とする。   The invention of claim 8 is the invention of claim 5, wherein the arrangement of the suspension lines in the horizontal cross section is the arrangement of the vertices of equilateral triangles, and one swing detection means is provided for each suspension line. A sway detection device that detects a sway when a corresponding swaying wire sways in a predetermined detection direction by a predetermined degree or more, and the detection directions of each of the two sway detection devices differ by 120 °. And

請求項９の発明は、請求項６の発明において、鉛直方向から見た光源ブロックの外形は円形状であって、揺れ検出手段は、各吊り線に対して１個ずつ設けられてそれぞれ対応する吊り線が所定の検出方向に所定の程度以上揺れたときに揺れを検出する吊り線揺れ検出装置を備え、各２個の吊り線揺れ検出装置の検出方向は、鉛直方向から見て各吊り線揺れ検出装置が対応する吊り線と光源ブロックの中心とを結ぶ直線同士がなす角ずつ異なることを特徴とする。   According to a ninth aspect of the present invention, in the sixth aspect of the present invention, the outer shape of the light source block viewed from the vertical direction is a circular shape, and one shake detecting means is provided for each suspension line, and corresponds to each. Provided with a sway detection device that detects a sway when the swaying wire sways in a predetermined direction more than a predetermined level. The detection direction of each of the two swaying device detection devices is as shown in the vertical direction. The swing detection device is characterized in that the angle formed by the straight lines connecting the corresponding suspension line and the center of the light source block is different.

請求項１０の発明は、請求項６の発明において、吊り線は４本であって、水平な断面における吊り線の配置は正方形の頂点の配置であり、揺れ検出手段は、各吊り線に対して１個ずつ設けられてそれぞれ対応する吊り線が所定の検出方向に所定の程度以上揺れたときに揺れを検出する吊り線揺れ検出装置を備え、４個の吊り線揺れ検出装置の検出方向は９０°ずつ異なることを特徴とする。   The invention of claim 10 is the invention of claim 6, wherein there are four suspension lines, the arrangement of the suspension lines in the horizontal cross section is the arrangement of the vertices of a square, and the swing detection means is provided for each suspension line. Provided with a sway detection device that detects a sway when the corresponding swaying wire sways in a predetermined direction more than a predetermined degree, and the detection direction of the four sway detection devices is It is characterized by being different by 90 °.

本発明は、揺れ検出部によって揺れが検出されてから昇降装置による光源ブロックの昇降を禁止する時間である禁止時間を、昇降手段によって最大限に吊り線が繰り出されたときの光源ブロックの揺れの周期の二分の一よりも長くし、又は、吊り線長検出手段によって検出されている吊り線の長さでの光源ブロックの揺れの周期の二分の一よりも長くするので、光源ブロックが揺れ続ける限り、禁止時間が経過する前に必ず再度揺れが検出されるから、光源ブロックが揺れている間の光源ブロックの昇降動作が確実に防止されることになる。   The present invention relates to a prohibition time, which is a time period during which the lifting / lowering device prohibits the lifting / lowering of the light source block after the shaking is detected by the shaking detection unit, and the shaking of the light source block when the lifting line is extended to the maximum by the lifting / lowering means. The light source block continues to shake because it is longer than one half of the period or longer than one half of the period of shaking of the light source block at the length of the suspension line detected by the suspension line length detecting means. As long as the prohibition time elapses, shaking is always detected again, so that the light source block can be reliably prevented from moving up and down while the light source block is shaking.

以下、本発明を実施するための最良の形態について、図面を参照しながら説明する。   The best mode for carrying out the present invention will be described below with reference to the drawings.

本実施形態は、図１に示すように、天井面（図示せず）に固定される取付ブロック１と、光源（図示せず）を保持し３本の吊り線２を介して取付ブロック１から吊り下げ支持された光源ブロック３とを備える。光源は例えば環状蛍光灯であって、取付ブロック１及び光源ブロック３はそれぞれ鉛直方向から見た外形が互いに同心の円形状となっている。取付ブロック１を天井面に固定する手段としては、例えば周知の引掛シーリングを用いることができる。   In this embodiment, as shown in FIG. 1, a mounting block 1 fixed to a ceiling surface (not shown) and a light source (not shown) are held from the mounting block 1 via three suspension lines 2. And a light source block 3 supported by suspension. The light source is, for example, an annular fluorescent lamp, and the mounting block 1 and the light source block 3 have circular shapes that are concentric with each other when viewed from the vertical direction. As a means for fixing the mounting block 1 to the ceiling surface, for example, a well-known hook ceiling can be used.

取付ブロック１には、図２に示すように、光源ブロック３を昇降させる昇降装置４と、リモコン装置（図示せず）から送信された制御信号を受信する受信部５と、受信部５に受信された制御信号に応じて昇降装置４を制御する制御部６とが設けられている。また、本実施形態の電源として用いられる交流電源ＡＣが接続される入力端にはヒューズＦＵが直列に接続されるとともにアクロスザラインコンデンサＣｘが並列に接続されている。さらに、交流電源ＡＣから入力された交流電力を整流するダイオードブリッジＤＢと、ダイオードブリッジＤＢの直流出力を電源として１２Ｖの直流電源を生成する電源回路ＰＷと、電源回路ＰＷの出力を電源として５Ｖの直流電源を生成する３端子レギュレータＲＧとを備える。受信部５及び制御部６はそれぞれ電源として５Ｖの直流電源を用いる。   As shown in FIG. 2, the mounting block 1 includes a lifting device 4 that lifts and lowers the light source block 3, a receiving unit 5 that receives a control signal transmitted from a remote controller (not shown), and a receiving unit 5 that receives the control signal. And a control unit 6 that controls the lifting device 4 according to the control signal. In addition, a fuse FU is connected in series and an across the line capacitor Cx is connected in parallel to an input terminal to which an AC power supply AC used as a power supply of the present embodiment is connected. Furthermore, a diode bridge DB that rectifies the AC power input from the AC power supply AC, a power supply circuit PW that generates a 12V DC power source using the DC output of the diode bridge DB as a power source, and a 5V power source that uses the output of the power circuit PW as a power source. And a three-terminal regulator RG that generates a DC power supply. Each of the receiving unit 5 and the control unit 6 uses a 5V DC power source as a power source.

詳しく説明すると、昇降装置４はＡＣモータＭを有し、ＡＣモータＭを所定の正方向に回転（正転）させることによって吊り線２を巻き取って光源ブロック３を引き上げる上昇動作と、ＡＣモータＭを正方向とは逆方向に回転（逆転）させることによって吊り線２を繰り出して光源ブロック３を降下させる下降動作とを行うことができる。昇降装置４は、交流電源ＡＣの一方の出力端に接続されるＣＯＭ端子ＴＣと、互いに並列に接続されたリレーＲＵ，ＲＤの一方ずつを介してそれぞれ交流電源ＡＣの他方の出力端に接続された正転端子ＴＵ及び逆転端子ＴＤとを有し、正転端子ＴＵ側のリレーＲＵがオンされて正転端子ＴＵが交流電源ＡＣに接続されるとＡＣモータＭが正転して上昇動作が行われ、逆転端子ＴＤ側のリレーＲＤがオンされて逆転端子ＴＤが交流電源ＡＣに接続されるとＡＣモータＭが逆転して下降動作が行われるようになっている。各リレーＲＵ，ＲＤの電源としてはそれぞれ１２Ｖの直流電源が用いられている。また、各リレーＲＵ，ＲＤと昇降装置４の端子ＴＵ，ＴＤとの接続部間にはコンデンサＣ１が接続されている。さらに、各リレーＲＵ，ＲＤの駆動用のコイルにはそれぞれ例えばＮＰＮトランジスタからなり制御部６によってオンオフ制御されるスイッチング素子ＱＵ，ＱＤが直列に接続されている。すなわち、制御部６は、スイッチング素子ＱＵ，ＱＤの一方をオンオフ制御して対応するリレーＲＵ，ＲＤをオンオフさせることにより、昇降装置４を制御する。   More specifically, the elevating device 4 has an AC motor M, and the AC motor M is rotated in the predetermined positive direction (forward rotation) to wind up the suspension line 2 and pull up the light source block 3, and the AC motor. By rotating (reversing) M in the direction opposite to the normal direction, it is possible to perform a lowering operation in which the suspension line 2 is drawn out and the light source block 3 is lowered. The elevating device 4 is connected to the other output terminal of the AC power supply AC via a COM terminal TC connected to one output terminal of the AC power supply AC and one of relays RU and RD connected in parallel to each other. The forward rotation terminal TU and the reverse rotation terminal TD. When the forward rotation terminal TU side relay RU is turned on and the normal rotation terminal TU is connected to the AC power source AC, the AC motor M rotates forward and the ascending operation is performed. When the relay RD on the reverse rotation terminal TD side is turned on and the reverse rotation terminal TD is connected to the AC power source AC, the AC motor M is reversely rotated and the lowering operation is performed. A DC power supply of 12V is used as the power supply for each relay RU, RD. A capacitor C <b> 1 is connected between the connection portions of the relays RU and RD and the terminals TU and TD of the lifting device 4. Further, switching elements QU and QD, each of which is composed of, for example, an NPN transistor and controlled to be turned on / off by the control unit 6, are connected in series to the driving coils of the relays RU and RD. That is, the control unit 6 controls the lifting device 4 by turning on / off the corresponding relays RU, RD by controlling one of the switching elements QU, QD.

さらに、本実施形態は、光源ブロック３の揺れの両端部でそれぞれ揺れ検出信号を出力する揺れ検出部７と、ブザーＢＺとを備える。制御部６は、揺れ検出部７によって揺れ検出信号が出力されてから所定の期間にわたって、昇降装置４の上昇動作及び下降動作を禁止するとともに、ブザーＢＺを鳴動させて揺れを報知する。ブザーＢＺの電源としては１２Ｖの直流電源が用いられ、制御部６はブザーＢＺに直列に接続された例えばＮＰＮトランジスタからなるスイッチング素子ＱＢをオンオフ制御することによってブザーＢＺをオンオフ制御する。   Furthermore, the present embodiment includes a shake detection unit 7 that outputs a shake detection signal at both ends of the shake of the light source block 3, and a buzzer BZ. The control unit 6 prohibits the ascending and descending operations of the elevating device 4 for a predetermined period after the shaking detection signal is output by the shaking detecting unit 7 and sounds the buzzer BZ to notify the shaking. A 12V DC power supply is used as the power supply for the buzzer BZ, and the controller 6 controls the buzzer BZ on / off by controlling on / off of a switching element QB made of, for example, an NPN transistor connected in series to the buzzer BZ.

揺れ検出部７について詳しく説明する。揺れ検出部７は、それぞれ１本ずつの吊り線２の揺れを検出する３個の吊り線揺れ検出装置７ａを有する。各吊り線揺れ検出装置７ａは、図３に示すように、取付ブロック１に固定されるフレーム７１を備える。以下、上下方向は図３を基準とし、図３の左上―右下方向を左右方向と呼び、図３の右上―左下方向を前後方向と呼ぶ。フレーム７１は、例えば金属板に打ち抜き加工と曲げ加工とを施すことにより形成されており、断面が上向きコ字形状の本体部７１ａと、本体部７１ａの両端からそれぞれ外向きに突設された固定部７１ｂとを有する。固定部７１ｂにはねじ挿通穴７０ａが上下に貫設されており、ねじ挿通穴７０ａに挿通されるとともに取付ブロック１に螺合するねじ（図示せず）によってフレーム７１は取付ブロック１に固定される。本体部７１ａの左右の壁にはそれぞれ軸挿通穴７０ｂが左右に貫設されており、本体部７１ａの左右の壁に挟まれた空間には、軸挿通穴７０ｂに軸７２ａを挿通された滑車７２（図４（ａ）（ｂ）参照）が配置されている。滑車７２は、吊り線２において水平方向に延長されて昇降手段４に連結された部位と鉛直方向に延長されて光源ブロック３に連結された部位との間で、吊り線２の向きを変更するために設けられている。   The shake detection unit 7 will be described in detail. The shaking detection unit 7 includes three hanging line shaking detection devices 7a that detect the shaking of each hanging line 2 one by one. As shown in FIG. 3, each hanging line fluctuation detection device 7 a includes a frame 71 fixed to the mounting block 1. Hereinafter, the vertical direction is based on FIG. 3, and the upper left-lower right direction in FIG. 3 is referred to as the left-right direction, and the upper right-lower left direction in FIG. The frame 71 is formed by punching and bending a metal plate, for example, and has a main body 71a whose cross section is an upward U-shape and a fixed projecting outward from both ends of the main body 71a. Part 71b. A screw insertion hole 70a is provided vertically through the fixing portion 71b. The frame 71 is fixed to the attachment block 1 by screws (not shown) that are inserted into the screw insertion hole 70a and screwed into the attachment block 1. The Shaft insertion holes 70b are provided in the left and right walls of the main body portion 71a to the left and right, respectively, and in the space sandwiched between the left and right walls of the main body portion 71a, a pulley having the shaft 72a inserted through the shaft insertion hole 70b. 72 (see FIGS. 4A and 4B) is arranged. The pulley 72 changes the direction of the suspension line 2 between a portion that extends in the horizontal direction on the suspension line 2 and is connected to the lifting means 4 and a portion that extends in the vertical direction and connected to the light source block 3. It is provided for.

また、フレーム７１は、本体部７１ａの左側の壁の前端から右方へ突設され本体部７１ａの右面よりも右側へ突出する保持部７１ｃを有し、保持部７１ｃの前側にはスイッチ７３が保持部７１ｃに対して例えばねじ止めにより固定されている。スイッチ７３は、左側に露出したハンドル７３ａを有し、ハンドル７３ａが左側から右向きに押し込まれている期間には接点が切り替わり、ハンドル７３ａへの押力が解除されるとハンドル７３ａ及び接点がそれぞれ復帰するように構成されている。このようなスイッチ７３は周知技術で実現可能であるので、詳細な説明は省略する。揺れ検出部７は、吊り線揺れ検出装置７ａにおいてスイッチ７３の接点が切り替わっている期間に、揺れ検出信号を生成して制御部６に入力する信号生成回路（図示せず）を有する。つまり、吊り線揺れ検出装置７ａにおいてスイッチ７３の接点が切り替わったときに光源ブロック３の揺れが検出されたことになる。ここで、信号生成回路は、各吊り線揺れ検出装置７ａにそれぞれ設けてもよいし、１個の信号生成回路が各吊り線揺れ検出部７ａのスイッチ７３をそれぞれトリガとして動作するようにしてもよい。   The frame 71 has a holding portion 71c that protrudes rightward from the front end of the left wall of the main body portion 71a and protrudes to the right side of the right surface of the main body portion 71a. A switch 73 is provided on the front side of the holding portion 71c. For example, it is fixed to the holding portion 71c by screwing. The switch 73 has a handle 73a exposed on the left side. The contact point is switched while the handle 73a is pushed rightward from the left side. When the pressing force to the handle 73a is released, the handle 73a and the contact point are restored. Is configured to do. Since such a switch 73 can be realized by a known technique, a detailed description thereof is omitted. The shake detection unit 7 includes a signal generation circuit (not shown) that generates a shake detection signal and inputs it to the control unit 6 during a period when the contact of the switch 73 is switched in the hanging line shake detection device 7a. That is, the swing of the light source block 3 is detected when the contact of the switch 73 is switched in the hanging line swing detection device 7a. Here, the signal generation circuit may be provided in each suspension line fluctuation detection device 7a, or one signal generation circuit may be operated by using the switch 73 of each suspension line fluctuation detection unit 7a as a trigger. Good.

また、保持部７１ｃの下端部には、左右に長いガイド穴７０ｃが設けられている。さらに、吊り線揺れ検出装置７ａは、ガイド穴７０ｃに挿入される被ガイド爪７４ａと、滑車７２の下側において吊り線２が上下に挿通される筒形状の吊り線挿通部７４ｂとを有して一部がスイッチ７３のハンドル７３ａの左側に位置する揺動部７４を備える。揺動部７４は、被ガイド爪７４ａがガイド穴７０ｃに挿入されることによってフレーム７１に支持され、被ガイド爪７４ａがガイド穴７０ｃにガイドされることにより、スイッチ７３のハンドル７３ａから離れる位置と、スイッチ７３のハンドル７３ａを押し込んでスイッチ７３の接点を切り替える位置との間で、フレーム７１に対して左右にスライド可能となっている。   Also, a long guide hole 70c is provided on the left and right at the lower end of the holding portion 71c. Furthermore, the hanging line fluctuation detecting device 7a has a guided claw 74a inserted into the guide hole 70c, and a tubular hanging line insertion part 74b through which the hanging line 2 is inserted vertically on the lower side of the pulley 72. A part of which is provided on the left side of the handle 73a of the switch 73. The swinging portion 74 is supported by the frame 71 when the guided claw 74a is inserted into the guide hole 70c, and moved away from the handle 73a of the switch 73 when the guided claw 74a is guided by the guide hole 70c. The switch 73 can be slid to the left and right with respect to the frame 71 between the position where the handle 73a of the switch 73 is pushed and the contact of the switch 73 is switched.

吊り線揺れ検出装置７ａの動作を説明する。光源ブロック３が揺れていないとき、図４（ａ）に示すように、揺動部７４の吊り線挿通部７４ｂに挿通された吊り線２は鉛直下向きとなる。このとき、揺動部７４はスイッチ７３のハンドル７３ａから離れており、揺れ検出信号は出力されない。光源ブロック３が取付ブロック１に対して図４（ａ）（ｂ）における左方向に揺れると、吊り線２が下方へ向かって図４（ａ）（ｂ）における左側へ傾き、これに伴って揺動部７４は吊り線挿通部７４ｂにおいて吊り線２から力を受けることによりフレーム７１に対して図４（ａ）（ｂ）における左方向へスライドする。そして、光源ブロック３の揺れがある程度大きいと、図４（ｂ）に示すように揺動部７４によってスイッチ７３のハンドル７３ａが押し込まれて接点が切り替わり、ここにおいて揺れ検出部７から制御部６に揺れ検出信号が入力される。つまり、図４（ａ）（ｂ）における左方向が請求項における検出方向である。また、揺れ検出部７によって検出される揺れは、揺動部７４によってスイッチ７３のハンドル７３ａが操作される程度に大きい揺れであり、これは例えば図１において中央の吊り線２が破線ＢＬを越える程度の揺れである。   The operation of the hanging line fluctuation detection device 7a will be described. When the light source block 3 is not shaken, as shown in FIG. 4A, the suspension line 2 inserted through the suspension line insertion portion 74 b of the swinging portion 74 is vertically downward. At this time, the swinging part 74 is separated from the handle 73a of the switch 73, and no swing detection signal is output. When the light source block 3 swings leftward in FIGS. 4 (a) and 4 (b) with respect to the mounting block 1, the suspension line 2 tilts downward to the left in FIGS. 4 (a) and 4 (b). The swinging part 74 slides leftward in FIGS. 4A and 4B with respect to the frame 71 by receiving a force from the suspension line 2 at the suspension line insertion part 74b. When the shaking of the light source block 3 is large to some extent, as shown in FIG. 4B, the handle 73a of the switch 73 is pushed in by the swinging portion 74 and the contact is switched. Here, the swing detecting portion 7 changes to the control portion 6. A shake detection signal is input. That is, the left direction in FIGS. 4A and 4B is the detection direction in the claims. Further, the shake detected by the shake detection unit 7 is a shake that is so large that the handle 73a of the switch 73 is operated by the swing unit 74. For example, the central suspension line 2 in FIG. The degree of shaking.

図５に示すように、吊り線２及び３個の吊り線揺れ検出装置７ａは、それぞれ鉛直方向から見て正三角形の頂点の位置関係で配置されており、これらの正三角形の重心（外接円の中心）の位置は、光源ブロック３の中心の位置に一致している。これにより、吊り線揺れ検出装置７ａ間の距離を不均一とする場合に比べて取付ブロック１の重量のバランスが良くなる。駆動装置４は、吊り線揺れ検出装置７ａに囲まれた中央に配置されて各吊り線２の一端がそれぞれ連結された巻取り部（図示せず）を有し、ＡＣモータＭは巻取り部を鉛直方向から見た面内（図５の面内）で回動させることにより、全ての吊り線２の巻き取り及び繰り出しを一括して行う。   As shown in FIG. 5, the suspending line 2 and the three suspending line fluctuation detecting devices 7a are respectively arranged in the positional relationship of the vertices of equilateral triangles when viewed from the vertical direction, and the centroids (circumscribed circles) of these equilateral triangles are arranged. The center of the light source block 3 coincides with the center position of the light source block 3. Thereby, the balance of the weight of the mounting block 1 is improved as compared with the case where the distance between the hanging line fluctuation detection devices 7a is not uniform. The drive device 4 has a winding portion (not shown) that is disposed at the center surrounded by the hanging wire swing detection device 7a and to which one end of each hanging wire 2 is connected, and the AC motor M is a winding portion. Is rotated in the plane viewed from the vertical direction (in the plane of FIG. 5), and all the suspension lines 2 are wound up and fed out collectively.

また、各吊り線揺れ検出装置７ａで検出される揺れの方向は、互いに１２０°ずつ異ならせてある。これにより、全ての方向の揺れが均等に検出される。図６に示すように、取付ブロック１のハウジング１０に設けられて吊り線２が挿通される貫通穴１０ａは、それぞれ挿通される吊り線２に対応して設けられた吊り線揺れ検出装置７ａが検出する揺れの方向に長い長穴形状となっている。ここで、吊り線２の間隔は、１２０ｍｍ以上、且つ、鉛直方向から見た光源ブロック３の外形に内接する正三角形の一辺の長さ（例えば２４０ｍｍ）以下とすることが望ましい。   Further, the directions of shaking detected by the hanging line shaking detection devices 7a are different from each other by 120 °. Thereby, shaking in all directions is detected equally. As shown in FIG. 6, the through hole 10 a provided in the housing 10 of the mounting block 1 and through which the suspension line 2 is inserted has the suspension line fluctuation detection device 7 a provided corresponding to each of the suspension lines 2 inserted therethrough. It has a long hole shape that is long in the direction of shaking to be detected. Here, the interval between the suspension lines 2 is desirably 120 mm or more and not more than the length of one side of an equilateral triangle inscribed in the outer shape of the light source block 3 as viewed from the vertical direction (for example, 240 mm).

制御部６は、揺れ検出部７から揺れ検出信号が出力されている期間と、揺れ検出部７からの揺れ検出信号の出力が終了した後に所定の禁止時間が経過するまでの期間とには昇降装置４の動作を禁止する。禁止時間の計時は、揺れ検出部７から揺れ検出信号が出力されたときにリセットされる。本実施形態では、禁止時間を、光源ブロック３を最も下げたとき、すなわち、吊り線２が最も長くなり従って揺れの周期が最も長くなるときの光源ブロック３の揺れの周期の二分の一よりも長くしている。   The control unit 6 moves up and down in a period during which the shake detection signal is output from the shake detection unit 7 and a period until the predetermined prohibition time elapses after the output of the shake detection signal from the shake detection unit 7 is completed. The operation of the device 4 is prohibited. The counting of the prohibition time is reset when a shake detection signal is output from the shake detection unit 7. In the present embodiment, the prohibition time is set to be less than one half of the oscillation period of the light source block 3 when the light source block 3 is lowered most, that is, when the suspension line 2 is the longest and therefore the oscillation period is the longest. It is long.

ここで、図７に示すように、光源ブロック３の揺れの一端においてある吊り線揺れ検出装置７ａにより揺れ検出信号が出力されてから、揺れの他端において別の吊り線揺れ検出装置７ａにより揺れ検出信号が出力されるまでの時間は、光源ブロック３の揺れの周期Ｔの二分の一であるから、禁止時間を上記のように光源ブロック３の揺れの周期Ｔが最も長くなるときを基準として設定すれば、揺れが継続している限り、禁止時間が経過する前に必ず再度の揺れ検出信号が出力されることになるから、揺れが十分に収まっていないにもかかわらず昇降装置４の動作が再開されるようなことがない。本発明者の実験によれば、光源ブロック３の揺れの周期Ｔは、少なくとも本実施形態の構成であって吊り線２の長さが１１００ｍｍである場合には、重力加速度ｇの環境における糸の長さＬの単純な振り子の揺れの周期を示す式２π（Ｌ／ｇ）１／２から得られる値と大差ないことが確認されている。 Here, as shown in FIG. 7, after the swing detection signal is output by the hanging line swing detection device 7a at one end of the swing of the light source block 3, the swing is detected by another hanging line swing detection device 7a at the other end of the swing. Since the time until the detection signal is output is one-half of the period T of the light source block 3, the prohibition time is based on the time when the period T of the light source block 3 is the longest as described above. If set, as long as the shaking continues, the shaking detection signal is output again before the prohibition time elapses. Will never be resumed. According to the experiment of the present inventor, the period T of the light source block 3 swings at least in the case of the configuration of the present embodiment and the length of the suspension line 2 is 1100 mm. It has been confirmed that there is not much difference from the value obtained from the formula 2π (L / g) 1/2 indicating the period of swing of a simple pendulum of length L.

上記構成によれば、光源ブロック３を最も下げたときの光源ブロック３の揺れの周期の二分の一よりも禁止時間を長くしていることにより、光源ブロック３が揺れている間の昇降装置４の動作が防止される。   According to the said structure, the raising / lowering apparatus 4 while the light source block 3 is shaking is made long by making prohibition time longer than 1/2 of the period of the shaking of the light source block 3 when the light source block 3 is lowered most. Is prevented.

なお、吊り線２の本数は３本に限られず、光源ブロック３の重量や吊り線２の引っ張り強度に応じて吊り線２を４本以上としてもよい。吊り線２を４本とする場合、図８に示すように吊り線２の配置及び吊り線揺れ検出装置７ａの配置はそれぞれ正方形の頂点の配置とすることが、重量バランスの上では望ましい。また、この場合、吊り線揺れ検出装置７ａが検出する揺れの向きは９０°ずつ異ならせれば、全方向の揺れが均等に検出されるから望ましい。さらに、吊り線２を４本以上とする場合、例えば図９に示すように吊り線２のうち３本に対してのみ吊り線揺れ検出装置７ａを設けてもよく、必ずしも全ての吊り線２に吊り線揺れ検出装置７ａを設けなくてもよい。図９の例では、吊り線揺れ検出装置７ａを設けない吊り線２（図９における右上の吊り線）に対しては、スイッチ７３を有さない点以外は吊り線揺れ検出装置７ａと同様の構成を有する吊り線誘導装置７ｂを設けている。一般に、各吊り線揺れ検出装置７ａの向きは、各２個の吊り線揺れ検出装置７ａについて、それぞれ、吊り線揺れ検出装置７ａが検出する揺れの向き同士が、鉛直方向から見て対応する吊り線２と光源ブロック３の中心とを結ぶ直線同志がなす角ずつ、該２個の吊り線揺れ検出装置７ａの対応する吊り線２同士の位置関係に応じた方向へ異なるように選択すれば、吊り線揺れ検出装置７ａの向きが適度に分散し、全方向の揺れを均等に検出することができる。   The number of suspension lines 2 is not limited to three, and the number of suspension lines 2 may be four or more depending on the weight of the light source block 3 and the tensile strength of the suspension lines 2. When the number of suspension lines 2 is four, as shown in FIG. 8, it is desirable in terms of weight balance that the arrangement of the suspension lines 2 and the arrangement of the suspension line fluctuation detection devices 7a are respectively arranged at the apexes of squares. Further, in this case, it is desirable that the swing direction detected by the hanging line swing detection device 7a is different by 90 ° because the swing in all directions is detected evenly. Furthermore, when the number of the suspension lines 2 is four or more, for example, as shown in FIG. 9, the suspension line swing detection device 7a may be provided only for three of the suspension lines 2, and not all suspension lines 2 are necessarily provided. The hanging line fluctuation detection device 7a may not be provided. In the example of FIG. 9, the suspension line 2 that does not include the suspension line swing detection device 7a (upper right suspension line in FIG. 9) is the same as the suspension line swing detection device 7a except that the switch 73 is not provided. A suspension line guiding device 7b having a configuration is provided. In general, the direction of each hanging line shake detection device 7a is the same for each of the two hanging line shake detection devices 7a. If the angle formed by the straight lines connecting the line 2 and the center of the light source block 3 is selected to be different in the direction according to the positional relationship between the corresponding suspension lines 2 of the two suspension line fluctuation detection devices 7a, The direction of the hanging line fluctuation detection device 7a is moderately dispersed, and fluctuations in all directions can be detected evenly.

また、吊り線２の長さに応じて禁止時間を可変としてもよい。具体的には、吊り線２の長さが長いほど禁止時間を長くし、吊り線２の長さから算出される光源ブロック３の揺れの周期よりも禁止時間が長い状態を、吊り線２の長さに関わらず維持する。この場合、吊り線２の長さを検出する吊り線長検出手段が必要となるが、この吊り線長検出手段については例えば制御部６が昇降装置４に上昇動作や下降動作を行わせる際にその動作の時間を計時して吊り線２の長さを演算する（つまり、制御部６を吊り線長検出手段とする）ことにより実現することができる。この構成を採用すれば、禁止時間を一定とする場合に比べ、吊り線２の長さに応じて禁止時間を短縮し、光源ブロック３の昇降ができないことによって使用者に与えるストレスを低減することができる。   The prohibition time may be variable according to the length of the suspension line 2. Specifically, the longer the suspension line 2 is, the longer the prohibition time is, and the state in which the prohibition time is longer than the period of shaking of the light source block 3 calculated from the length of the suspension line 2 is Maintain regardless of length. In this case, a hanging line length detecting means for detecting the length of the hanging line 2 is required. For example, when the control unit 6 causes the lifting / lowering device 4 to perform an ascending operation or a descending operation, the hanging line length detecting means is required. This can be realized by measuring the time of the operation and calculating the length of the suspension line 2 (that is, the control unit 6 is used as a suspension line length detection means). By adopting this configuration, compared to the case where the prohibition time is made constant, the prohibition time is shortened according to the length of the suspension line 2 and the stress applied to the user is reduced because the light source block 3 cannot be raised and lowered. Can do.

禁止時間は、吊り線２が多少短い場合であっても余裕をもって１．５秒以上とすることが望ましい。また、禁止時間は光源ブロック３の揺れの周期よりも長めでもよいが、光源ブロック３の昇降ができないことによるストレスをなるべく使用者に与えぬように５秒以下とすることが望ましい。   The forbidden time is desirably 1.5 seconds or more with a margin even when the hanging line 2 is somewhat short. In addition, the prohibition time may be longer than the period of shaking of the light source block 3, but it is desirable to set it to 5 seconds or less so as not to give the user as much stress as possible because the light source block 3 cannot be moved up and down.

本発明に実施形態の概略構成を示す説明図である。It is explanatory drawing which shows schematic structure of embodiment in this invention. 同上を示す回路ブロック図である。It is a circuit block diagram which shows the same as the above. 同上の吊り線揺れ検出装置を示す斜視図である。It is a perspective view which shows a hanging line shaking detection apparatus same as the above. 同上の吊り線揺れ検出装置の動作を示す正面図であり、（ａ）は光源ブロックが揺れていない状態を示し、（ｂ）は光源ブロックが揺れている上体を示す。It is a front view which shows operation | movement of a hanging line shaking detection apparatus same as the above, (a) shows the state which the light source block is not shaking, (b) shows the upper body which the light source block is shaking. 同上において鉛直方向から見た吊り線揺れ検出装置の配置を示す説明図である。It is explanatory drawing which shows arrangement | positioning of the hanging line fluctuation | variation detection apparatus seen from the perpendicular direction in the same as the above. 同上における取付ブロックを示す下面図である。It is a bottom view which shows the attachment block in the same as the above. 同上の揺れ検出信号の波形の一例を示す説明図である。It is explanatory drawing which shows an example of the waveform of a shake detection signal same as the above. 同上の別の形態において鉛直方向から見た吊り線揺れ検出装置の配置を示す説明図である。It is explanatory drawing which shows arrangement | positioning of the hanging line fluctuation | variation detection apparatus seen from the perpendicular direction in another form same as the above. 同上の更に別の形態において鉛直方向から見た吊り線揺れ検出装置の配置を示す説明図である。It is explanatory drawing which shows arrangement | positioning of the hanging line fluctuation | variation detection apparatus seen from the perpendicular direction in another form same as the above.

符号の説明Explanation of symbols

１ 取付ブロック
２ 吊り線
３ 光源ブロック
４ 昇降装置
６ 制御部
７ 揺れ検出部
７ａ 吊り線揺れ検出装置 DESCRIPTION OF SYMBOLS 1 Mounting block 2 Hanging line 3 Light source block 4 Lifting device 6 Control part 7 Shaking detection part 7a Hanging line shaking detection apparatus

Claims (10)

天井面に取り付けられる取付ブロックと、
光源を保持し吊り線を介して取付ブロックに吊り下げ支持された光源ブロックと、
取付ブロックと光源ブロックとの一方に保持されて吊り線を巻き取り又は繰り出しすることにより光源ブロックを取付ブロックに対して昇降させる昇降手段と、
取付ブロックと光源ブロックとの一方に保持されて取付ブロックに対する光源ブロックの揺れであって所定の程度以上大きな揺れについて少なくとも揺れの両端でそれぞれ光源ブロックの揺れを検出する揺れ検出手段と、
揺れ検出手段によって光源ブロックの揺れが検出されたときから所定の禁止時間にわたって昇降手段の動作を禁止する制御手段とを備え、
禁止時間は、昇降手段によって最大限に吊り線が繰り出されたときの光源ブロックの揺れの周期の二分の一よりも長いことを特徴とする照明器具。 A mounting block attached to the ceiling surface;
A light source block that holds the light source and is supported by hanging on the mounting block via a suspension line;
Lifting means for lifting and lowering the light source block with respect to the mounting block by winding or unwinding the hanging line held by one of the mounting block and the light source block;
A shaking detection means for detecting the shaking of the light source block at both ends of the shaking at least at both ends of the shaking of the light source block relative to the mounting block held by one of the mounting block and the light source block,
Control means for prohibiting the operation of the elevating means over a predetermined prohibition time from when the shake of the light source block is detected by the shake detection means,
The lighting apparatus is characterized in that the prohibited time is longer than one half of the period of shaking of the light source block when the hanging line is drawn out to the maximum by the lifting means. 天井面に取り付けられる取付ブロックと、
光源を保持し吊り線を介して取付ブロックに吊り下げ支持された光源ブロックと、
取付ブロックと光源ブロックとの一方に保持されて吊り線を巻き取り又は繰り出しすることにより光源ブロックを取付ブロックに対して昇降させる昇降手段と、
取付ブロックと光源ブロックとの一方に保持されて取付ブロックに対する光源ブロックの揺れであって所定の程度以上大きな揺れについて少なくとも揺れの両端でそれぞれ光源ブロックの揺れを検出する揺れ検出手段と、
揺れ検出手段によって光源ブロックの揺れが検出されたときから禁止時間にわたって昇降手段の動作を禁止する制御手段と、
昇降手段によって繰り出されている吊り線の長さを検出する吊り線長検出手段とを備え、
制御手段は、禁止時間を、吊り線長検出手段によって検出されている吊り線の長さが長いほど長く、且つ、吊り線長検出手段によって検出されている吊り線の長さでの光源ブロックの揺れの周期の二分の一よりも長くすることを特徴とする照明器具。 A mounting block attached to the ceiling surface;
A light source block that holds the light source and is supported by hanging on the mounting block via a suspension line;
Lifting means for lifting and lowering the light source block with respect to the mounting block by winding or unwinding the hanging line held by one of the mounting block and the light source block;
A shaking detection means for detecting the shaking of the light source block at both ends of the shaking at least at both ends of the shaking of the light source block relative to the mounting block held by one of the mounting block and the light source block,
Control means for prohibiting the operation of the elevating means over the prohibition time from when the shake of the light source block is detected by the shake detection means;
A hanging line length detecting means for detecting the length of the hanging line fed by the lifting means,
The control means increases the prohibition time as the length of the suspension line detected by the suspension line length detection means is longer and the length of the light source block at the length of the suspension line detected by the suspension line length detection means. A luminaire characterized by being longer than one half of the period of shaking. 禁止時間は１．５秒よりも長く且つ５秒よりも短いことを特徴とする請求項１又は請求項２に記載の照明器具。   The lighting apparatus according to claim 1 or 2, wherein the prohibition time is longer than 1.5 seconds and shorter than 5 seconds. 吊り線は３本であって、
鉛直方向から見た光源ブロックの外形は半径が４０√３ｍｍ以上の円形状であって、
水平な断面における吊り線の間隔は、上記円形状に内接する正三角形の一辺の長さ以下であって且つ１２０ｍｍ以上であることを特徴とする請求項１〜３のいずれか一項に記載の照明器具。 There are three hanging lines,
The external shape of the light source block viewed from the vertical direction is a circular shape with a radius of 40√3 mm or more,
The interval between the suspension lines in the horizontal cross section is not more than the length of one side of an equilateral triangle inscribed in the circular shape and not less than 120 mm, according to any one of claims 1 to 3. lighting equipment. 吊り線は３本であって、
揺れ検出手段は、各吊り線の揺れに基づいて光源ブロックの揺れを検出することを特徴とする請求項１〜４のいずれか一項に記載の照明器具。 There are three hanging lines,
The illuminating device according to any one of claims 1 to 4, wherein the sway detector detects a sway of the light source block based on a sway of each suspension line. 吊り線は４本以上であって、
揺れ検出手段は、吊り線うち３本以上の揺れに基づいて光源ブロックの揺れを検出することを特徴とする請求項１〜３のいずれか一項に記載の照明器具。 There are 4 or more hanging lines,
The illuminating device according to any one of claims 1 to 3, wherein the sway detector detects a sway of the light source block based on sway of three or more of the hanging lines. 鉛直方向から見た光源ブロックの外形は円形状であって、
揺れ検出手段は、各吊り線に対して１個ずつ設けられてそれぞれ対応する吊り線が所定の検出方向に所定の程度以上揺れたときに揺れを検出する吊り線揺れ検出装置を備え、各２個の吊り線揺れ検出装置の検出方向は、鉛直方向から見て各吊り線揺れ検出装置が対応する吊り線と光源ブロックの中心とを結ぶ直線同士がなす角ずつ異なることを特徴とする請求項５記載の照明器具。 The external shape of the light source block viewed from the vertical direction is circular,
The sway detector is provided with a sway detector for detecting a sway when one sway is provided for each sway and the corresponding sway sways more than a predetermined amount in a predetermined detection direction. The detection direction of each swaying line fluctuation detection device is different from each other by an angle formed by straight lines connecting the suspending line corresponding to each swaying line fluctuation detection device and the center of the light source block when viewed from the vertical direction. 5. A lighting fixture according to 5. 水平な断面における吊り線の配置は正三角形の頂点の配置であり、
揺れ検出手段は、各吊り線に対して１個ずつ設けられてそれぞれ対応する吊り線が所定の検出方向に所定の程度以上揺れたときに揺れを検出する吊り線揺れ検出装置を備え、各２個の吊り線揺れ検出装置の検出方向は１２０°ずつ異なることを特徴とする請求項５記載の照明器具。 The arrangement of the suspension lines in the horizontal section is the arrangement of the vertices of an equilateral triangle,
The sway detector is provided with a sway detector for detecting a sway when one sway is provided for each sway and the corresponding sway sways more than a predetermined amount in a predetermined detection direction. 6. The lighting apparatus according to claim 5, wherein the detection directions of the individual hanging line fluctuation detection devices are different by 120 degrees. 鉛直方向から見た光源ブロックの外形は円形状であって、
揺れ検出手段は、各吊り線に対して１個ずつ設けられてそれぞれ対応する吊り線が所定の検出方向に所定の程度以上揺れたときに揺れを検出する吊り線揺れ検出装置を備え、各２個の吊り線揺れ検出装置の検出方向は、鉛直方向から見て各吊り線揺れ検出装置が対応する吊り線と光源ブロックの中心とを結ぶ直線同士がなす角ずつ異なることを特徴とする請求項６記載の照明器具。 The external shape of the light source block viewed from the vertical direction is circular,
The sway detector is provided with a sway detector for detecting a sway when one sway is provided for each sway and the corresponding sway sways more than a predetermined amount in a predetermined detection direction. The detection direction of each swaying line fluctuation detection device is different from each other by an angle formed by straight lines connecting the suspending line corresponding to each swaying line fluctuation detection device and the center of the light source block when viewed from the vertical direction. 6. The lighting fixture according to 6. 吊り線は４本であって、水平な断面における吊り線の配置は正方形の頂点の配置であり、
揺れ検出手段は、各吊り線に対して１個ずつ設けられてそれぞれ対応する吊り線が所定の検出方向に所定の程度以上揺れたときに揺れを検出する吊り線揺れ検出装置を備え、４個の吊り線揺れ検出装置の検出方向は９０°ずつ異なることを特徴とする請求項６記載の照明器具。 There are four suspension lines, and the arrangement of the suspension lines in the horizontal section is the arrangement of the vertices of a square,
The sway detector is provided with a sway detector for detecting sway when one sway is provided for each sway and the corresponding sway is swayed by a predetermined degree or more in a predetermined detection direction. The lighting apparatus according to claim 6, wherein detection directions of the hanging line fluctuation detection device are different by 90 °.
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