JP2007095552A - Architectural lighting system having air purification function - Google Patents
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- JP2007095552A JP2007095552A JP2005284855A JP2005284855A JP2007095552A JP 2007095552 A JP2007095552 A JP 2007095552A JP 2005284855 A JP2005284855 A JP 2005284855A JP 2005284855 A JP2005284855 A JP 2005284855A JP 2007095552 A JP2007095552 A JP 2007095552A
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- 238000004887 air purification Methods 0.000 title claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 41
- 239000011941 photocatalyst Substances 0.000 claims abstract description 32
- 239000011521 glass Substances 0.000 claims abstract description 7
- 238000005286 illumination Methods 0.000 claims description 23
- 238000009423 ventilation Methods 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 abstract description 5
- 238000000746 purification Methods 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 239000003463 adsorbent Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 150000002894 organic compounds Chemical class 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 229910010272 inorganic material Inorganic materials 0.000 description 2
- 239000011147 inorganic material Substances 0.000 description 2
- 239000012855 volatile organic compound Substances 0.000 description 2
- 206010019233 Headaches Diseases 0.000 description 1
- 206010020751 Hypersensitivity Diseases 0.000 description 1
- 206010028813 Nausea Diseases 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 208000026935 allergic disease Diseases 0.000 description 1
- 208000002173 dizziness Diseases 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 231100000869 headache Toxicity 0.000 description 1
- 230000009610 hypersensitivity Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008693 nausea Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 208000008842 sick building syndrome Diseases 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
- Catalysts (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
Abstract
Description
この発明は、可視光型光触媒を利用した空気浄化機能を有する建築化照明システムに関する。 The present invention relates to an architectural lighting system having an air purification function using a visible light type photocatalyst.
住宅における高断熱高気密化は、省エネルギー性及び室内の温熱環境の向上をもたらしている。しかし、その一方で、内装材や家具等に使用されている接着剤や塗料等から放出されるホルムアルデヒド等の揮発性有機化合物（ＶＯＣ）が室内に滞留し易くなって、頭痛、めまい、吐き気等の体の変調をきたす、いわゆるシックハウス症候群（化学物質過敏症）が問題になっている。 High heat insulation and high airtightness in houses have brought about energy saving and improvement of indoor thermal environment. However, on the other hand, volatile organic compounds (VOC) such as formaldehyde released from adhesives and paints used in interior materials and furniture, etc. tend to stay in the room, causing headache, dizziness, nausea, etc. So-called sick house syndrome (chemical hypersensitivity), which causes the body's body modulation, has become a problem.
このため、室内の空気を浄化するための空気清浄機が各種市販されている。例えば、活性炭等の吸着材を用いて有機化合物を吸着するものや、ブラックライトと紫外光型光触媒を用いて有機化合物を分解するものがある。 For this reason, various air purifiers for purifying indoor air are commercially available. For example, there are those that adsorb organic compounds using an adsorbent such as activated carbon, and those that decompose organic compounds using black light and an ultraviolet light photocatalyst.
しかしながら、このような空気清浄機は、一般に据え置き型のものが多く、室内空気の局部的な浄化には適しているが、室内空気を全体的に効率良く浄化するには不向きであった。また、活性炭等の吸着材を使用した場合には、定期的に吸着材の交換が必要となり、ブラックライトを使用した場合には、電気代が嵩むといったように、ランニングコストが必要であった。 However, such air purifiers are generally stationary types and are suitable for local purification of indoor air, but are unsuitable for efficiently purifying indoor air as a whole. Further, when an adsorbent such as activated carbon is used, it is necessary to periodically exchange the adsorbent, and when black light is used, a running cost is required, such as an increase in electricity bill.
一方、近年においては、紫外線の照射により反応するだけでなく、蛍光灯や白熱灯、ハロゲンランプといった一般的な照明用光源からの可視光によっても触媒活性を発揮する可視光型光触媒が各種開発されている。そして、このような可視光型光触媒を室内の壁や天井にコーティングしたり(例えば特許文献１、特許文献２)、さらには可視光型光触媒を照明器具に担持させて(例えば特許文献３)、照明用光源からの可視光を可視光型光触媒に照射させることで、ランニングコストを抑えながら室内空気を浄化するシステムが提案されている。 On the other hand, in recent years, various types of visible light photocatalysts have been developed that not only react by irradiation with ultraviolet rays but also exhibit catalytic activity by visible light from general lighting sources such as fluorescent lamps, incandescent lamps, and halogen lamps. ing. And such a visible light type photocatalyst is coated on an indoor wall or ceiling (for example, Patent Document 1, Patent Document 2), and further, a visible light type photocatalyst is carried on a lighting device (for example, Patent Document 3), There has been proposed a system that purifies indoor air while reducing running costs by irradiating visible light type photocatalyst with visible light from an illumination light source.
しかしながら、室内の壁に可視光型光触媒をコーティングする場合には、室内に設置した家具等によって照明用光源からの可視光が面的に遮られることが多い。また、室内の天井に可視光型光触媒をコーティングする場合には、一般に照明用光源からの可視光は室内空間に向けて照射されるので、照明器具から離れた壁際等においては可視光が当たり難くなる。 However, when the indoor wall is coated with a visible light type photocatalyst, visible light from the illumination light source is often obstructed by furniture installed indoors. Further, when a visible light photocatalyst is coated on the ceiling of the room, the visible light from the illumination light source is generally directed toward the indoor space, so that it is difficult for the visible light to hit the wall away from the lighting fixture. Become.
従って、室内の壁や天井に可視光型光触媒を単にコーティングしただけでは、照明用光源からの可視光が十分に照射されない箇所が生じることが多く、そのような箇所にコーティングした可視光型光触媒が無駄になって、室内空気の浄化効率が悪くなるといった不具合があった。 Therefore, simply coating a visible light type photocatalyst on an indoor wall or ceiling often results in locations where the visible light from the illumination light source is not sufficiently irradiated. There was a problem that it was wasted and the efficiency of purifying indoor air deteriorated.
一方、照明器具に可視光型光触媒を担持させる場合には、照明用光源からの可視光を可視光型光触媒に対して良好に照射させることができるが、室内の壁や天井に可視光型光触媒をコーティングする場合と比べて、可視光型光触媒領域が狭くなる。光触媒の反応速度は決して速くないため、室内空気を全体的に効率良く浄化するためには、空気との接触面積をある程度広く確保する必要があるが、照明器具に可視光型光触媒を担持させるだけでは十分な浄化効果を期待することはできないといった不具合があった。 On the other hand, when a visible light type photocatalyst is carried on a lighting fixture, visible light from a light source for illumination can be satisfactorily irradiated to the visible light type photocatalyst. Compared with the case of coating, the visible light photocatalytic region becomes narrower. Since the reaction rate of the photocatalyst is never high, in order to purify indoor air as a whole efficiently, it is necessary to secure a certain contact area with the air, but only the visible light type photocatalyst is supported on the lighting fixture. However, there was a problem that a sufficient purification effect could not be expected.
そこで、この発明は、上記不具合を解消して、ランニングコストを抑えながら、室内空気を全体的に効率良く浄化することができる空気浄化機能を有する建築化照明システムの提供を目的とする。 Accordingly, an object of the present invention is to provide an architectural lighting system having an air purification function that can eliminate the above-described problems and purify indoor air efficiently while reducing running costs.
上記課題を解決するため、この発明の空気浄化機能を有する建築化照明システムは、室内の天井１の下方に、透光性を有する例えば硝子板からなる天井板材２を配設するとともに、前記天井１と天井板材２との間の空間３に照明用光源４を配置して、前記天井板材２を透過させた前記照明用光源４からの可視光によって室内を照明するものであって、可視光の照射により活性を有する可視光型光触媒領域１０を、前記天井板材２における光透過部位に設けたことを特徴とする。 In order to solve the above-described problems, an architectural lighting system having an air purification function according to the present invention has a ceiling plate material 2 made of, for example, a glass plate having translucency disposed below a ceiling 1 in the room, and the ceiling. An illumination light source 4 is disposed in a space 3 between 1 and the ceiling plate material 2 to illuminate the room with visible light from the illumination light source 4 transmitted through the ceiling plate material 2. The visible light type photocatalyst region 10 that is active by irradiation is provided at a light transmitting portion in the ceiling board material 2.
また、前記可視光型光触媒領域１０付近の空気を強制的に流動させるための送風機１１を、前記天井板材２により覆い隠すようにして、前記室内の天井１又は天井板材２に取り付けている。 A blower 11 for forcibly flowing the air in the vicinity of the visible light type photocatalyst region 10 is attached to the ceiling 1 or the ceiling plate material 2 so as to be covered with the ceiling plate material 2.
さらに、前記室内の天井１と天井板材２との間の空間３と、前記天井板材２の下方の室内空間とを連通する通気用の空隙８、１２を設けている。 Further, air gaps 8 and 12 are provided for communicating the space 3 between the ceiling 1 and the ceiling plate member 2 and the indoor space below the ceiling plate member 2.
この発明の建築化照明システムにおいては、光天井による照明を採用して、照明用光源からの可視光を透過する光透過部位に可視光型光触媒領域を設けているから、比較的広い範囲の可視光型光触媒領域に対して可視光を直接且つ確実に照射することができ、これによって室内空気を全体的に効率良く浄化することができる。 In the architectural lighting system of the present invention, the illumination by the optical ceiling is adopted, and the visible light type photocatalyst region is provided in the light transmission part that transmits the visible light from the illumination light source. Visible light can be directly and reliably radiated to the photo-type photocatalyst region, and thereby the indoor air can be efficiently purified as a whole.
しかも、照明用光源の点灯による日常的な照明に際して、同時に空気浄化を行うことができるため、ランニングコストを低く抑えることができる。 In addition, the running cost can be kept low because air purification can be performed at the same time during routine illumination by turning on the illumination light source.
また、可視光型光触媒領域付近の空気を送風機によって強制的に流動させることで、室内空気を可視光型光触媒領域へ効率良く接触させることができ、これによって室内空気の浄化効率を高めることができる。さらに、照明用光源や送風機を覆い隠すことで、見栄えの良好なデザインされた建築化照明において空気浄化を実現することができる。 Further, the air in the vicinity of the visible light type photocatalyst region is forced to flow by the blower, so that the indoor air can be efficiently brought into contact with the visible light type photocatalyst region, thereby improving the purification efficiency of the indoor air. . Furthermore, by covering the illumination light source and the blower, it is possible to achieve air purification in the architectural lighting designed to look good.
さらに、天井板材として、無機質素材である硝子板を用いると、可視光型光触媒によって天井板材が分解されるといった不具合が生じず、長期に亘って安定的に空気浄化機能を発揮させることができる。 Furthermore, when a glass plate that is an inorganic material is used as the ceiling plate material, there is no problem that the ceiling plate material is decomposed by the visible light type photocatalyst, and the air purification function can be exhibited stably over a long period of time.
この発明の実施形態について、図面を参照しつつ詳細に説明する。この発明の一実施形態に係る建築化照明システムは、図１及び図２に示すように、住宅における室内の天井１の下方に透光性を有する天井板材２を略水平に吊り下げ支持して二重天井を構成し、この二重天井の内部空間すなわち室内の天井１と天井板材２・・との間の空間３に、照明用光源４・・を配置している。そして、照明用光源４・・からの可視光を、天井板材２において透過させて光天井とし、この光天井によって室内を照明するようになっている。 Embodiments of the present invention will be described in detail with reference to the drawings. As shown in FIGS. 1 and 2, the architectural lighting system according to an embodiment of the present invention suspends and supports a ceiling plate material 2 having translucency under a ceiling 1 in a room in a house, substantially horizontally. A double ceiling is formed, and an illumination light source 4 is arranged in an internal space of the double ceiling, that is, a space 3 between the indoor ceiling 1 and the ceiling plate material 2. The visible light from the illumination light source 4 is transmitted through the ceiling plate material 2 to form an optical ceiling, and the interior of the room is illuminated by the optical ceiling.
天井板材２は、略方形状に形成された硝子板からなる。なお、天井板材２としては、例えばアクリル板等のような硝子板以外の透光性を有する板材を用いるようにしても良い。また、この天井板材２と室内の壁６との間には、空間３と天井板材２の下方の室内空間とを連通する通気用の空隙８が確保されている。 The ceiling board material 2 consists of a glass plate formed in a substantially rectangular shape. In addition, as the ceiling board | plate material 2, you may make it use the board | plate material which has translucency other than a glass plate like an acrylic board etc., for example. Further, an air gap 8 is provided between the ceiling plate material 2 and the indoor wall 6 to communicate the space 3 and the indoor space below the ceiling plate material 2.
照明用光源４・・としては、可視光を照射する蛍光灯が用いられているが、可視光を照射するものであれば、白熱灯やハロゲン灯等のその他のインテリア照明用光源を用いても良い。この照明用光源４は、天井板材２によって覆い隠された状態で、天井１に取り付けられている。 A fluorescent lamp that emits visible light is used as the illumination light source 4..., But other interior illumination light sources such as incandescent lamps and halogen lamps may be used as long as they emit visible light. good. The illumination light source 4 is attached to the ceiling 1 in a state of being covered with the ceiling plate material 2.
そして、この建築化照明システムにおいては、図２に示すように、例えば２０００〜３０００ルクスといった照度が得られる天井板材２・・の上下面である光透過部位に、可視光の照射により活性を有する可視光型光触媒がコーティングされて、可視光型光触媒領域１０が設けられている。この場合、天井板材２として無機質素材である硝子板を用いていると、コーティングした可視光型光触媒によって天井板材２が分解されるといった不具合が生じず、長期に亘って安定的に空気浄化機能を発揮させることができる。 And in this architectural lighting system, as shown in FIG. 2, it has activity by irradiation of visible light in the light transmission part which is the upper and lower surfaces of the ceiling board material 2 .. with which illuminance such as 2000 to 3000 lux is obtained. A visible light photocatalyst region 10 is provided by coating with a visible light photocatalyst. In this case, when a glass plate that is an inorganic material is used as the ceiling plate material 2, there is no problem that the ceiling plate material 2 is decomposed by the coated visible light photocatalyst, and the air purification function can be stably provided over a long period of time. It can be demonstrated.
さらに、この可視光型光触媒領域１０と室内空気との接触機会を増やして、室内空気の浄化効率を高めるために、可視光型光触媒領域１０付近の空気を強制的に流動させるための送風機１１が、天井板材２により覆い隠された状態で天井板材２の上面に取り付けられている。そして、天井板材２には、通気用の空隙を確保するガラリ１２が形成されている。なお、この送風機１１は、天井板材２の上面に取り付けるだけでなく、室内の天井１に取り付けるようにしても良い。 Furthermore, in order to increase the contact opportunity of this visible light type photocatalyst area | region 10 and room air, and to improve the purification efficiency of indoor air, the air blower 11 for forcedly flowing the air of visible light type photocatalyst area | region 10 is provided. The ceiling plate 2 is attached to the upper surface of the ceiling plate 2 in a state of being covered with the ceiling plate 2. The ceiling plate member 2 is formed with a louver 12 that secures a ventilation gap. The blower 11 may be attached not only to the upper surface of the ceiling plate member 2 but also to the indoor ceiling 1.
上記構成の建築化照明システムにおいて、照明用光源４を点灯させると、図２に示すように、照明用光源４からの可視光が、天井板材２を透過して天井板材２・・の下方の室内空間へ向けて照射する。 When the illumination light source 4 is turned on in the structured illumination system having the above configuration, as shown in FIG. 2, the visible light from the illumination light source 4 passes through the ceiling plate material 2 and below the ceiling plate material 2. Irradiate the indoor space.
このとき、天井板材２の光透過部位には、可視光型光触媒領域１０・・が設けられているので、可視光下で強い触媒活性を発揮し、この可視光型光触媒領域１０に対して、空間３内の空気及び天井板材２の下方の室内空気が接触することで、これら空気に含まれる有害な有機化合物が分解除去され、また脱臭される。ここで、空間３内に設けた送風機１１を作動させることで、空間３内の空気が撹拌されて、可視光型光触媒領域１０への空間３内の空気の接触機会が増え、これによって空間３内の空気の浄化が促進される。 At this time, since the visible light photocatalyst region 10 is provided in the light transmitting portion of the ceiling plate material 2, it exerts strong catalytic activity under visible light, and with respect to the visible light photocatalyst region 10, By contacting the air in the space 3 and the indoor air below the ceiling board material 2, harmful organic compounds contained in the air are decomposed and removed and deodorized. Here, by operating the blower 11 provided in the space 3, the air in the space 3 is agitated, and the opportunity of contact of the air in the space 3 with the visible light photocatalyst region 10 is increased. The purification of the air inside is promoted.
浄化後の空間３内の空気は、ガラリ１２から天井板材２・・の下方の室内空間へ向けて送り出され、代わりに天井板材２・・の下方の室内空気が空隙８から空間３内に流れ込むといった空気循環が繰り返されることで、室内空間全体の空気が効率良く浄化される。 The air in the space 3 after purification is sent out from the louver 12 toward the indoor space below the ceiling plate material 2... The indoor air below the ceiling plate material 2. By repeating such air circulation, the air in the entire indoor space is efficiently purified.
この発明は、上記実施形態に限定されるものではなく、この発明の範囲内で上記実施形態に多くの修正及び変更を加え得ることは勿論である。例えば、この発明の建築化照明システムは、住宅の室内に適用するだけに限らず、例えば駅舎のトイレ等の公共施設、エレベータ内等の気流の少ない閉鎖空間にも有効に適用することができる。 The present invention is not limited to the above embodiment, and it is needless to say that many modifications and changes can be made to the above embodiment within the scope of the present invention. For example, the architectural lighting system of the present invention is not limited to being applied to the interior of a house, but can also be effectively applied to a closed space with little airflow, such as a public facility such as a toilet in a station building, an elevator, and the like.
１・・天井、２・・天井板材、３・・空間、４・・照明用光源、８、１２・・通気用の空隙、１０・・可視光型光触媒領域、１１・・送風機 1 .. Ceiling 2.. Ceiling plate material 3 .. Space 4 .. Illumination light source 8, 12 .. Air gap for ventilation 10 .. Visible light photocatalyst region 11.
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