JPH0586338B2 - - Google Patents
Info
- Publication number
- JPH0586338B2 JPH0586338B2 JP59275853A JP27585384A JPH0586338B2 JP H0586338 B2 JPH0586338 B2 JP H0586338B2 JP 59275853 A JP59275853 A JP 59275853A JP 27585384 A JP27585384 A JP 27585384A JP H0586338 B2 JPH0586338 B2 JP H0586338B2
- Authority
- JP
- Japan
- Prior art keywords
- reflector
- filter
- pressure discharge
- discharge lamp
- ultraviolet
- 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.)
- Expired - Lifetime
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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Non-Metallic Protective Coatings For Printed Circuits (AREA)
- Manufacturing Of Printed Wiring (AREA)
- Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
- Coating Apparatus (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Description
【発明の詳細な説明】
〔発明の目的〕
（産業上の利用分野）
本発明は、可視光線および赤外線を除去し紫外
線のみを照射するようにして加熱作用を低減した
紫外線照射装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to an ultraviolet irradiation device that reduces heating effect by removing visible light and infrared rays and emitting only ultraviolet rays.
（従来の技術）
プリント合板、プリント配線基板あるいは新聞
印刷などの印刷工程において、紫外線硬化性の塗
料、インク等を塗布した基材に紫外線を照射し
て、この塗料、インク等を硬化させる方法が知ら
れている。(Prior art) In the printing process of printed plywood, printed wiring boards, newspaper printing, etc., there is a method of curing the paint, ink, etc. by irradiating ultraviolet rays onto a base material coated with ultraviolet curable paint, ink, etc. Are known.
ところで、紫外線を照射する例えば高圧水銀ラ
ンプ、メタルハライドランプなどの高圧放電ラン
プは、紫外線とともに可視光線および赤外線も発
生するため、高圧放電ランプを収納する器具本体
を熱損させたり、被照射物の温度を上昇させて紫
外線を照射する基材の熱変形や紫外線硬化の光化
学反応を阻害したりする。 By the way, high-pressure discharge lamps that emit ultraviolet light, such as high-pressure mercury lamps and metal halide lamps, emit visible light and infrared rays as well as ultraviolet rays, which can cause heat loss to the main body of the device that houses the high-pressure discharge lamp, or cause the temperature of the irradiated object to drop. This increases the heat deformation of the base material irradiated with ultraviolet rays and inhibits the photochemical reaction of ultraviolet curing.
従来、器具本体の熱損を防止するためには、一
般に高圧放電ランプの周囲の空気を排出し冷風を
吸引して装置内の熱を除去する構造が採られてい
る。しかし、高圧放電ランプの表面の冷風が当る
風上側は冷却されるが、風下側には渦流が生じて
冷却されず、そのため、高圧放電ランプの表面の
温度分布が不均一になり、特に風下側に局部的な
熱損が発生する問題がある。そこで、実公昭57−
31298号公報に記載されているように、ランプの
風下側にこの高圧放電ランプの表面に沿つた通風
路を形成する渦流消去板を対向して配置し、この
渦流消去板により渦流の発生を防止した装置があ
る。 Conventionally, in order to prevent heat loss in the main body of the device, a structure has generally been adopted in which the air around the high-pressure discharge lamp is exhausted and cool air is sucked in to remove the heat inside the device. However, although the windward side of the surface of the high-pressure discharge lamp that is hit by the cold air is cooled, the leeward side is not cooled due to the formation of eddy currents.As a result, the temperature distribution on the surface of the high-pressure discharge lamp becomes uneven, especially on the leeward side. There is a problem that localized heat loss occurs. Therefore, in 1983,
As described in Publication No. 31298, eddy current elimination plates that form a ventilation path along the surface of this high-pressure discharge lamp are placed facing each other on the leeward side of the lamp, and these eddy current elimination plates prevent the generation of eddy currents. There is a device that does this.
また、被照射物の温度上昇を防止するために
は、実開昭59−61834号公報に記載されているよ
うに、赤外線透過および紫外線反射の反射体、紫
外線透過および赤外線反射のフイルタを用い、被
照射物への赤外線の照射を低減するようにした装
置がある。 In addition, in order to prevent the temperature of the irradiated object from rising, as described in Japanese Utility Model Application Publication No. 59-61834, a reflector that transmits infrared rays and reflects ultraviolet rays, and a filter that transmits ultraviolet rays and reflects infrared rays is used. There is a device designed to reduce the irradiation of infrared rays onto an irradiated object.
（発明が解決しようとする問題点）
しかし、前記実公昭57−31298号公報に記載さ
れた装置では、ランプ表面に渦流消去板を配置す
るので、この渦流消去板による二次幅射によりラ
ンプ表面の温度が上昇しこの箇所の熱損が生じ易
く、この渦流消去板の熱劣化も発生し易すい。ま
た、この渦流消去板と対向する反射体も渦流消去
板の幅射熱で劣化される。(Problems to be Solved by the Invention) However, in the device described in the above-mentioned Japanese Utility Model Publication No. 57-31298, since the eddy current canceling plate is arranged on the lamp surface, the lamp surface is affected by the secondary radiation by the eddy current canceling plate. As the temperature rises, heat loss is likely to occur at this location, and thermal deterioration of this eddy current elimination plate is also likely to occur. Further, the reflector facing the eddy current elimination plate is also deteriorated by the radiated heat from the eddy current elimination plate.
また、前記実開昭59−61834号公報に記載され
た装置では、赤外線の照射を低減させて被照射物
の温度上昇をある程度は防止できるものの、充分
な効果が得られていない。その理由を以下に説明
する。 Further, although the device described in the above-mentioned Japanese Utility Model Publication No. 59-61834 can reduce the irradiation of infrared rays and prevent the temperature rise of the irradiated object to some extent, sufficient effects are not obtained. The reason for this will be explained below.
例えば高圧水銀ランプのエネルギ配分は、ラン
プ入力を100％とした場合、全放射エネルギは約
71％、その他の熱が29％である。また、全放射エ
ネルギを波長別に分類すると、ランプ入力の約15
％が所望の紫外線で、可視光線が約11％、約半分
の46％が赤外線の放射となつている。さらに、紫
外線は200〜400nm、可視光線は400〜700nm、赤
外線は700〜4000nmの波長域になつている。 For example, regarding the energy distribution of a high-pressure mercury lamp, if the lamp input is 100%, the total radiant energy is approximately
71%, other fever 29%. Furthermore, if the total radiant energy is classified by wavelength, it is approximately 15% of the lamp input.
% is the desired ultraviolet radiation, about 11% is visible light, and about half, 46%, is infrared radiation. Furthermore, ultraviolet light has a wavelength range of 200 to 400 nm, visible light has a wavelength range of 400 to 700 nm, and infrared light has a wavelength range of 700 to 4000 nm.
従来は、その赤外線のみを反射体やフイルタで
除去するようにしている。例えばフイルタは、光
干渉薄膜を多層に積層して赤外線反射膜を形成し
ており、その光干渉薄膜の積層数を多くすれば反
射可能とする赤外線の波長域の範囲が広くなる。
しかし、光干渉薄膜を多層化すると紫外線の透過
率が低下するため、反射可能とする赤外線の波長
域の範囲が比較的狭い範囲に限定される。 Conventionally, only the infrared rays have been removed using reflectors or filters. For example, in a filter, an infrared reflecting film is formed by laminating multiple layers of light interference thin films, and as the number of layers of light interference thin films increases, the wavelength range of infrared rays that can be reflected becomes wider.
However, when the optical interference thin film is multilayered, the transmittance of ultraviolet rays decreases, so the wavelength range of infrared rays that can be reflected is limited to a relatively narrow range.
そして、赤外線は、700〜4000nmの長い波長域
にあたつており、しかも、例えば可視光線の
435nmのスペクトルを100％とした場合、わずか
0.1％程度の小さいエネルギ波長となつている。 Infrared rays correspond to a long wavelength range of 700 to 4000 nm, and for example, visible light.
If the 435nm spectrum is taken as 100%, only a few
It has a small energy wavelength of about 0.1%.
したがつて、従来、フイルタ等で除去される赤
外線の波長域およびエネルギは一部のみで、これ
が充分な効果が得られない理由となつている。 Therefore, conventional filters and the like remove only a portion of the wavelength range and energy of infrared rays, which is the reason why sufficient effects cannot be obtained.
そこで、本件発明者は、およそ400nm幅の狭い
波長域内にある主に水銀スペクトルの405nm，
435nm，546nmおよび577nmの可視光線がエネル
ギ量としては、ランプ入力の約11％と量も多く、
紫外線硬化等に寄与しないことに着目し、この可
視光線を除去することにより被照射物の温度上昇
の低減を効果的に図れることを究明した。 Therefore, the inventor of the present invention mainly focused on the mercury spectrum at 405 nm, which is within a narrow wavelength range of about 400 nm.
Visible light of 435nm, 546nm and 577nm has a large amount of energy, accounting for approximately 11% of the lamp input.
Focusing on the fact that ultraviolet rays do not contribute to curing, etc., the researchers discovered that by removing this visible light, it is possible to effectively reduce the temperature rise of the irradiated object.
本発明は、上述のような事情に基づいてなされ
たもので、被照射物への赤外線および可視光線の
照射を低減して被照射物の温度上昇を防止し、か
つ、器具本体や高圧放電ランプの熱損等を防止
し、効率の良い紫外線照射を行なえるようにした
紫外線照射装置を提供することを目的とするもの
である。 The present invention has been made based on the above-mentioned circumstances, and is capable of reducing the irradiation of infrared rays and visible light to an irradiated object, thereby preventing a rise in the temperature of the irradiated object, and of reducing the temperature of the irradiated object. It is an object of the present invention to provide an ultraviolet irradiation device that prevents heat loss and the like and can efficiently irradiate ultraviolet rays.
（問題点を解決するための手段）
本発明は、高圧放電ランプと、この高圧放電ラ
ンプを内包し赤外線を透過し紫外線を反射する反
射体と、紫外線照射経路に配設され紫外線を透過
し可視光線を反射するフイルタと、このフイルタ
を支持する支持部材とから器具本体を構成し、前
記反射体とフイルタとの間に器具本体の内部と外
部とを連通する通風部を設け、前記反射体の頂部
に通気部を設け、前記通風部と通気部を通じて器
具本体の内部の気体を流通させる強制通気手段を
設けたものである。
(Means for Solving the Problems) The present invention provides a high-pressure discharge lamp, a reflector that includes the high-pressure discharge lamp and transmits infrared rays and reflects ultraviolet rays, and a reflector disposed in the ultraviolet irradiation path that transmits ultraviolet rays and is visible. A device main body is constituted by a filter that reflects light rays and a support member that supports this filter, and a ventilation section that communicates the inside and outside of the device main body is provided between the reflector and the filter, and the A ventilation section is provided at the top, and forced ventilation means is provided for circulating gas inside the instrument body through the ventilation section and the ventilation section.
（作用）
本発明では、高圧放電ランプから放射される放
射線のうち、赤外線が反射体を透過し、可視光線
がフイルタで反射し、紫外線がフイルタを透過し
て被照射物に照射される。したがつて、反射体に
よる赤外線の照射の低減とともに、フイルタによ
り比較的高エネルギのスペクトル線が短い波長域
に集中している可視光線の照射が低減される。(Function) In the present invention, among radiation emitted from a high-pressure discharge lamp, infrared rays are transmitted through a reflector, visible rays are reflected by a filter, and ultraviolet rays are transmitted through the filter and are irradiated onto an irradiated object. Therefore, while the reflector reduces infrared irradiation, the filter reduces irradiation of visible light in which relatively high-energy spectral lines are concentrated in a short wavelength range.
また、強制通気手段により器具本体の内部の気
体が、反射体とフイルタとの間の通風部と反射体
の頂部の通気部を通じて流通することにより、気
体が反射体やフイルタの表面に沿つて流れ、反射
体やフイルタが効率よく冷却される。 In addition, the forced ventilation means allows the gas inside the device body to flow through the ventilation section between the reflector and the filter and the ventilation section at the top of the reflector, so that the gas flows along the surfaces of the reflector and filter. , the reflector and filter are efficiently cooled.
（実施例）
以下、本発明の一実施例の構成を図面を参照し
て説明する。(Example) Hereinafter, the configuration of an example of the present invention will be described with reference to the drawings.
紫外線照射装置は、第１図ないし第３図に示す
ように、管形の高圧放電ランプ１に沿つて対向配
置され前面に拡開開口した一対の反射体２と、こ
の反射体２を収納保持し前面を開口して照射開口
３を形成した箱状の枠体４と、この枠体４の照射
開口３に前記高圧放電ランプ１の前面に対向して
配置されるフイルタ５と、このフイルタ５を照射
開口３に支持する支持部材６とから器具本体が構
成されている。 As shown in FIGS. 1 to 3, the ultraviolet irradiation device includes a pair of reflectors 2 that are disposed opposite to each other along a tubular high-pressure discharge lamp 1 and have an enlarged opening in the front, and a device that houses and holds the reflectors 2. A box-shaped frame 4 whose front face is open to form an irradiation aperture 3; a filter 5 disposed in the irradiation aperture 3 of the frame 4 facing the front surface of the high-pressure discharge lamp 1; The main body of the instrument is comprised of a support member 6 that supports the irradiation aperture 3.
前記高圧放電ランプ１は、例えば高圧水銀ラン
プ、メタルハライドランプ等からなり、この高圧
放電ランプ１は放電により、第４図の水銀ライン
スペクトルに示すように、紫外線および可視光線
が放射されるととももに、放電および高温の管壁
などから赤外線が放射される。なお、この高圧放
電ランプ１の放電によつて放射するエネルギは、
紫外域が約50％、可視域が約35％、赤外域が約15
％であり、この放射はそのまま高圧放電ランプ１
から放射され、さらに、管壁などの各部からの二
次放射された赤外線がこれに加わる。 The high-pressure discharge lamp 1 is composed of, for example, a high-pressure mercury lamp, a metal halide lamp, or the like, and when the high-pressure discharge lamp 1 discharges, ultraviolet rays and visible rays are emitted as shown in the mercury line spectrum in FIG. Infrared rays are emitted from the discharge and from the high-temperature tube walls. Note that the energy radiated by the discharge of this high-pressure discharge lamp 1 is:
Approximately 50% in the ultraviolet region, approximately 35% in the visible region, and approximately 15% in the infrared region
%, and this radiation is directly emitted from the high-pressure discharge lamp 1
In addition, secondary infrared radiation emitted from various parts such as the tube wall is added to this.
前記反射体２は、紫外線を透過する石英ガラス
からなり二次曲面をなす基体１１の内面（高圧放
電ランプ１に対向する側）に、例えば酸化チタン
（TiO2）、酸化ジルコニウム（ZrO2）などからな
る高屈折率層と、シリカ（SiO2）、フツ化マグネ
シウム（MgF2）などからなる低屈折率層とを10
層ないし60数層交互に重層した多層干渉薄膜１２
が蒸着形成されている。この多層干渉薄膜１２を
形成した反射体２は、高圧放電ランプ１から放射
される波長約200〜400nmの紫外域を効果的に反
射し、波長約700nm以上の赤外線を透過させると
ともに一部の可視光線をも若干透過させる。 The reflector 2 is made of quartz glass that transmits ultraviolet rays, and is coated with titanium oxide (TiO 2 ), zirconium oxide (ZrO 2 ), etc. on the inner surface (the side facing the high-pressure discharge lamp 1) of a base 11 that has a quadratic curved surface. A high refractive index layer made of silica (SiO 2 ), a low refractive index layer made of magnesium fluoride (MgF 2 ), etc.
Multilayer interference thin film 12 consisting of alternating layers or 60 layers
is formed by vapor deposition. The reflector 2 on which the multilayer interference thin film 12 is formed effectively reflects the ultraviolet light with a wavelength of about 200 to 400 nm emitted from the high-pressure discharge lamp 1, transmits the infrared light with a wavelength of about 700 nm or more, and transmits some visible light. It also allows some light to pass through.
前記枠体４は、この枠体４の内面部の前端およ
び後端に設けた保持部１５に前記反射体２の前後
端部２ａ，２ｂを保持し、この枠体４の後部およ
び反射体２の後部には反射体２とフイルタ５との
間の器具本体の内部の空気を強制通気手段として
の吸引装置により吸引する通気部１６が開口され
ている。また、この枠体４の外側面には複数の流
通孔１７が開口形成されているとともに、この枠
体４の前端部には前記支持部材６が取付けられる
取付部１８が設けられている。また、この枠体４
の側部の開口端部には、前記高圧放電ランプ１が
挿通する切欠き部１９ａを有した側板１９が取付
けられ、この側板１９にはこの枠体４を被装着面
に装着するための取付片１９ｂが設けられてい
る。 The frame 4 holds the front and rear ends 2a and 2b of the reflector 2 in holding parts 15 provided at the front and rear ends of the inner surface of the frame 4, and A vent section 16 is opened at the rear of the reflector 2 and the filter 5 for sucking the air inside the instrument main body between the reflector 2 and the filter 5 using a suction device serving as forced ventilation means. Further, a plurality of communication holes 17 are formed on the outer surface of the frame 4, and a mounting portion 18 to which the support member 6 is attached is provided at the front end of the frame 4. Also, this frame 4
A side plate 19 having a notch 19a through which the high-pressure discharge lamp 1 is inserted is attached to the open end of the side part of the frame 4. A piece 19b is provided.
前記フイルタ５は、紫外線を良く透過する石英
ガラスなどからなる基体２１の内面（高圧放電ラ
ンプ１に対向する側）に、例えば酸化ジルコニウ
ム（ZrO2）、酸化ハフニウム（HfO2）などから
なる高屈折率層と、シリカ（SiO2）、フツ化マグ
ネシウム（MgF2）などからなる低屈折率層とを
10層ないし60数層交互に重層した多層干渉薄膜２
２が蒸着形成されている。この多層干渉薄膜２２
を形成したフイルタ５は、高圧放電ランプ１から
放射される波長約200〜400nmの紫外域を透過し
て、可視光線を反射するとともに一部の赤外線も
反射する。さらに、フイルタ５の基板２１が石英
であるので赤外線を若干吸収する。 The filter 5 has a high refractive material made of, for example, zirconium oxide (ZrO 2 ), hafnium oxide (HfO 2 ), etc. on the inner surface (the side facing the high-pressure discharge lamp 1) of a base body 21 made of quartz glass or the like that transmits ultraviolet rays well. A low refractive index layer made of silica (SiO 2 ), magnesium fluoride (MgF 2 ), etc.
Multilayer interference thin film 2 with 10 to 60 layers stacked alternately
2 is formed by vapor deposition. This multilayer interference thin film 22
The filter 5 having the above structure transmits ultraviolet light with a wavelength of about 200 to 400 nm emitted from the high-pressure discharge lamp 1, reflects visible light, and also reflects some infrared light. Furthermore, since the substrate 21 of the filter 5 is made of quartz, it absorbs some infrared rays.
前記支持部材６は、後端に前記枠体４の取付部
１８に装着される取付片部２５を有し、前端に前
記フイルタ５を嵌入する支持溝２６が形成され、
この支持溝２６にフイルタ５が装着されて高圧放
電ランプ１前面の照射開口３を閉塞する。また、
この支持部材６の側面には枠体４の内部と外部と
を連通する通風部２７が複数開口形成されてい
る。 The support member 6 has a mounting piece portion 25 attached to the mounting portion 18 of the frame body 4 at the rear end, and a support groove 26 into which the filter 5 is fitted is formed at the front end.
A filter 5 is attached to the support groove 26 to close the irradiation opening 3 on the front surface of the high-pressure discharge lamp 1. Also,
A plurality of ventilation portions 27 are formed on the side surface of the support member 6 to communicate the inside and outside of the frame body 4 .
また、前記高圧放電ランプ１は、その両端部１
ａを枠体４の外側に突出され、この両端部１ａを
保持部材３１により保持する。この保持部材３１
は、高圧放電ランプ１の端部１ａが挿入されて保
持する保持部３２と、この保持部３２を一端に固
定し他端に前記側板１９の取付片１９ｂと同様に
被装着面に装着するための取付板３３と、前記一
方の保持部３２の内部に配置され高圧放電ランプ
１を他方の保持部３２に付勢してこの保持部３
２，３２間に高圧放電ランプ１を保持するばね体
３４とから構成されている。 Further, the high pressure discharge lamp 1 has both ends 1
a is projected to the outside of the frame 4, and both ends 1a are held by holding members 31. This holding member 31
A holding part 32 into which the end part 1a of the high-pressure discharge lamp 1 is inserted and held, and a holding part 32 fixed to one end and attached to the mounting surface at the other end in the same way as the mounting piece 19b of the side plate 19. The mounting plate 33 is arranged inside the one holding part 32, and the high-pressure discharge lamp 1 is biased toward the other holding part 32.
2 and 32, and a spring body 34 that holds the high pressure discharge lamp 1 between them.
次に、本実施例の作用を説明する。 Next, the operation of this embodiment will be explained.
高圧放電ランプ１の放電とともに、紫外線、可
視光線および赤外線のスペクトルが放射され、そ
して、高圧放電ランプ１から反射体２に向かつて
紫外線は反射体２により反射されて照射開口３に
位置するフイルタ５に向かい、可視光線の一部と
赤外線は反射体２を透過して枠体４の内面で吸収
されるとともに枠体４の流通孔１７から外部に放
出される。また、反射体２および各部からの二次
放射による赤外線も同様に反射体２を透過する
か、あるいは反射体２の基体１２自体の吸収によ
り除去されて熱となり放出される。 As the high-pressure discharge lamp 1 discharges, ultraviolet, visible, and infrared spectra are emitted. A part of the visible light and infrared rays pass through the reflector 2 and are absorbed by the inner surface of the frame 4, and are emitted to the outside from the communication hole 17 of the frame 4. Further, infrared rays due to secondary radiation from the reflector 2 and various parts similarly pass through the reflector 2 or are removed by absorption by the base 12 of the reflector 2 itself and are emitted as heat.
フイルタ５に、高圧放電ランプ１から直接入射
した紫外線と反射体２から反射した紫外線とはフ
イルタ５を透過して前方に照射され、また、高圧
放電ランプ１から直接入射した可視光線と反射体
２から反射された可視光線とはフイルタ５で反射
されて枠体４内に戻る。なお、高圧放電ランプ１
からフイルタ５に直接入射した赤外線および二次
放射による赤外線は、一部はフイルタ５内を透過
する。 The ultraviolet rays directly incident from the high-pressure discharge lamp 1 and the ultraviolet rays reflected from the reflector 2 pass through the filter 5 and are irradiated forward, and the visible light directly incident from the high-pressure discharge lamp 1 and the ultraviolet rays reflected from the reflector 2 pass through the filter 5. The visible light reflected from the filter 5 is reflected back into the frame 4. In addition, high pressure discharge lamp 1
A portion of the infrared rays and the infrared rays due to the secondary radiation directly incident on the filter 5 are transmitted through the filter 5.
このように、高圧放電ランプ１からの赤外線は
反射体２で透過および一部がフイルタ５で反射あ
るいは吸収されて除去され、可視光線はフイルタ
５で反射あるいは吸収され一部が反射体２で透過
されて除去され、そのため、照射される放射エネ
ルギは主に紫外線であり、赤外線は少ないととも
に特に可視光線は極めて少ない。 In this way, the infrared rays from the high-pressure discharge lamp 1 are transmitted through the reflector 2 and partially reflected or absorbed by the filter 5 and removed.Visible light is reflected or absorbed by the filter 5 and partially transmitted through the reflector 2. Therefore, the irradiated radiant energy is mainly ultraviolet rays, less infrared rays, and especially very little visible rays.
さらに、前記高圧放電ランプ１の放電中は、吸
引装置により通気部１６から枠体４内部の空気が
吸引される。そのため、高圧放電ランプ１の熱、
反射体２の熱およびフイルタ５の熱は空気ととも
に通気部１６から排出される。このとき、第５図
に示すように、支持部材６の通風部２７から枠体
４内に冷風が吸入されるが、この冷風は二次曲面
形状に形成された反射体５の内面（高圧放電ラン
プ１に対向する面）に沿つてなめらかに流れるた
め、この反射体２の表面温度が低減され、かつ、
高圧放電ランプ１の通気部１６に対向する反射体
２の最深部側の高圧放電ランプ１の表面上に渦流
が生じることがなく、反射体２の最深部に配設さ
れた高圧放電ランプ１の表面部が局部的に加熱す
ることがなく、この高圧放電ランプ１の反射体２
の開口部側の表面が過冷状態になることもない。
また、通風部２７から吸入された冷風の一部はフ
イルタ５の表面に沿つて流れるので、このフイル
タ５の表面温度も低減される。 Further, while the high-pressure discharge lamp 1 is discharging, the air inside the frame 4 is sucked through the ventilation portion 16 by the suction device. Therefore, the heat of the high pressure discharge lamp 1,
The heat of the reflector 2 and the heat of the filter 5 are exhausted from the ventilation section 16 along with the air. At this time, as shown in FIG. 5, cold air is sucked into the frame 4 from the ventilation part 27 of the support member 6, but this cold air is absorbed into the inner surface of the reflector 5 (high-pressure discharge Since the light flows smoothly along the surface facing the lamp 1, the surface temperature of the reflector 2 is reduced, and
No vortex is generated on the surface of the high-pressure discharge lamp 1 on the deepest side of the reflector 2 facing the ventilation part 16 of the high-pressure discharge lamp 1, and The reflector 2 of this high-pressure discharge lamp 1 has no surface area that is locally heated.
The surface on the side of the opening does not become supercooled.
Moreover, since a portion of the cold air sucked from the ventilation section 27 flows along the surface of the filter 5, the surface temperature of the filter 5 is also reduced.
なお、前記支持部材６の前後方向の長さ寸法す
なわち前記反射体２の前端部２ａからフイルタ５
の内面までの距離Ｌは３〜30mmとし、この寸法に
より前記通風部２７の径寸法が決定される。この
通風部２７の径寸法すなわち距離Ｌは、第６図
（点線が反射体２の温度、実線がフイルタ５の温
度）および第７図（点線が光量、実線が風量）に
示すように、距離Ｌが少なければ通風部２７から
流入する冷風の流入量が少なくなり反射体２の内
面に沿つて流れずに反射体２の表面温度が上昇
し、また、距離Ｌが大きければ、通風部２７から
の冷風の流入量が多くなり、高圧放電ランプ１の
反射体２の最深部側の高圧放電ランプ１の表面上
に渦流が発生して高圧放電ランプ１の表面温度が
不均一になり光出力が低下してしまう。そのた
め、この距離Ｌは、３〜30mmに設定することが効
果的である。 Note that the length dimension of the support member 6 in the front-rear direction, that is, the distance from the front end 2a of the reflector 2 to the filter 5
The distance L to the inner surface is 3 to 30 mm, and the diameter of the ventilation portion 27 is determined by this dimension. The diameter dimension of this ventilation section 27, that is, the distance L, is determined by the distance L, as shown in FIG. 6 (the dotted line indicates the temperature of the reflector 2, the solid line indicates the temperature of the filter 5) and FIG. If L is small, the amount of cold air flowing in from the ventilation section 27 will be small, and the surface temperature of the reflector 2 will increase without flowing along the inner surface of the reflector 2. Also, if the distance L is large, the amount of cold air flowing from the ventilation section 27 will increase. The amount of cold air flowing in increases, and a vortex is generated on the surface of the high-pressure discharge lamp 1 on the deepest side of the reflector 2 of the high-pressure discharge lamp 1, making the surface temperature of the high-pressure discharge lamp 1 uneven and reducing the light output. It will drop. Therefore, it is effective to set this distance L to 3 to 30 mm.
本発明によれば、赤外線を透過し紫外線を反射
する反射体、紫外線を透過し可視光線を反射する
フイルタを備えたため、高圧放電ランプから放射
される放射線のうち、赤外線が反射体を透過し、
可視光線がフイルタで反射し、一部の紫外線が反
射体によつて反射された後、フイルタを透過し
て、被照射物に照射され、残りの紫外線が直接フ
イルタを透過して被照射物に照射される。したが
つて、赤外線の照射の低減とともに、比較的高エ
ネルギのスペクトル線が短い波長域に集中してい
る可視光線の照射が低減され、被照射物の温度上
昇の低減を効果的に図ることができる。また、フ
イルタは前述のとおり比較的短い波長域を反射す
ればよいので、例えば反射膜層を少なくでき、製
造が容易であるとともに、紫外線の透過率を極度
に低下することなく、効率よく被照射物に紫外線
を照射することができる。
According to the present invention, since the reflector that transmits infrared rays and reflects ultraviolet rays and the filter that transmits ultraviolet rays and reflects visible rays are provided, infrared rays among the radiation emitted from the high-pressure discharge lamp pass through the reflector,
Visible light is reflected by a filter, and some of the ultraviolet rays are reflected by a reflector, then pass through the filter and are irradiated onto the irradiated object, and the remaining ultraviolet rays directly pass through the filter and reach the irradiated object. irradiated. Therefore, in addition to reducing the irradiation of infrared rays, the irradiation of visible light whose relatively high-energy spectral lines are concentrated in a short wavelength range is also reduced, making it possible to effectively reduce the temperature rise of the irradiated object. can. In addition, as mentioned above, the filter only needs to reflect a relatively short wavelength range, so for example, the number of reflective layers can be reduced, making manufacturing easier. Objects can be irradiated with ultraviolet light.
また、強制通気手段により器具本体の内部の気
体が、反射体とフイルタとの間の通気部と反射体
の頂部の通気部を通じて流通することにより、反
射体やフイルタの表面に沿つて気体が流れて冷却
し、反射体やフイルタの表面温度を低減すること
ができる。特に、フイルタの冷却により、可視光
線反射皮膜を設けた場合等、膜の長寿命化を図
れ、フイルタからの輻射熱の放射も減少できる。
よつて、簡単な構成にて、被照射物に対する熱影
響の少ない効率の良い紫外線照射を行ないえる。 In addition, the forced ventilation means allows the gas inside the device to flow through the vent between the reflector and the filter and the vent at the top of the reflector, causing the gas to flow along the surfaces of the reflector and filter. The surface temperature of the reflector and filter can be reduced by cooling the reflector and filter. In particular, by cooling the filter, the life of the film can be extended, such as when a visible light reflecting film is provided, and the radiation of radiant heat from the filter can also be reduced.
Therefore, with a simple configuration, efficient ultraviolet irradiation with little thermal influence on the irradiated object can be performed.
第１図は本発明の紫外線照射装置の一実施例を
示す斜視図、第２図および第３図はその縦断面
図、第４図は高圧放電ランプの放電発光の一例を
示すスペクトル分布図、第５図は風の流れを示す
説明図、第６図は温度分布の曲線図、第７図は光
量および風量分布の曲線図である。
１……高圧放電ランプ、２……反射体、５……
フイルタ、６……支持部材、１６……通気部、２
７……通風部。
FIG. 1 is a perspective view showing an embodiment of the ultraviolet irradiation device of the present invention, FIGS. 2 and 3 are longitudinal sectional views thereof, and FIG. 4 is a spectral distribution diagram showing an example of discharge light emission from a high-pressure discharge lamp. FIG. 5 is an explanatory diagram showing the flow of wind, FIG. 6 is a curve diagram of temperature distribution, and FIG. 7 is a curve diagram of light amount and air volume distribution. 1...High pressure discharge lamp, 2...Reflector, 5...
Filter, 6... Support member, 16... Ventilation section, 2
7...Ventilation section.
Claims (1)
包し赤外線を透過し紫外線を反射する反射体と、
紫外線照射経路に配設され紫外線を透過し可視光
線を反射するフイルタと、このフイルタを支持す
る支持部材とから器具本体を構成し、 前記反射体とフイルタとの間に器具本体の内部
と外部とを連通する通風部を設け、 前記反射体の頂部に通気部を設け、 前記通風部と通気部を通じて器具本体の内部の
気体を流通させる強制通気手段を設けた ことを特徴とする紫外線照射装置。[Claims] 1. A high-pressure discharge lamp; a reflector that includes the high-pressure discharge lamp and transmits infrared rays and reflects ultraviolet rays;
A device main body is constituted by a filter disposed in an ultraviolet irradiation path that transmits ultraviolet rays and reflects visible light, and a support member that supports this filter, and between the reflector and the filter there is a connection between the inside and outside of the device main body. An ultraviolet irradiation device comprising: a ventilation section that communicates with the reflector, a ventilation section provided on the top of the reflector, and forced ventilation means that circulates gas inside the device body through the ventilation section and the ventilation section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59275853A JPS61158455A (en) | 1984-12-29 | 1984-12-29 | Ultraviolet-ray irradiation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59275853A JPS61158455A (en) | 1984-12-29 | 1984-12-29 | Ultraviolet-ray irradiation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61158455A JPS61158455A (en) | 1986-07-18 |
| JPH0586338B2 true JPH0586338B2 (en) | 1993-12-10 |
Family
ID=17561344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59275853A Granted JPS61158455A (en) | 1984-12-29 | 1984-12-29 | Ultraviolet-ray irradiation device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61158455A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0661519B2 (en) * | 1988-12-28 | 1994-08-17 | 株式会社オーク製作所 | Irradiator reflector in dryer |
| JP2000162397A (en) * | 1998-11-30 | 2000-06-16 | Iwasaki Electric Co Ltd | UV curing equipment |
| JP2011023253A (en) * | 2009-07-17 | 2011-02-03 | Iwasaki Electric Co Ltd | Ultraviolet lamp for sterilization |
| US9165756B2 (en) * | 2011-06-08 | 2015-10-20 | Xenex Disinfection Services, Llc | Ultraviolet discharge lamp apparatuses with one or more reflectors |
| US9093258B2 (en) | 2011-06-08 | 2015-07-28 | Xenex Disinfection Services, Llc | Ultraviolet discharge lamp apparatuses having optical filters which attenuate visible light |
| CA2931403C (en) | 2012-12-06 | 2020-03-31 | Xenex Disinfection Services, Llc. | Systems which determine operating parameters and disinfection schedules for germicidal devices and germicidal lamp apparatuses including lens systems |
| US9867894B2 (en) | 2015-07-02 | 2018-01-16 | Xenex Disinfection Services, Llc. | Germicidal apparatuses with configurations to selectively conduct different disinfection modes interior and exterior to the apparatus |
-
1984
- 1984-12-29 JP JP59275853A patent/JPS61158455A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61158455A (en) | 1986-07-18 |
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