JP2021170650A - Ultraviolet irradiation device - Google Patents

Ultraviolet irradiation device Download PDF

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JP2021170650A
JP2021170650A JP2021105953A JP2021105953A JP2021170650A JP 2021170650 A JP2021170650 A JP 2021170650A JP 2021105953 A JP2021105953 A JP 2021105953A JP 2021105953 A JP2021105953 A JP 2021105953A JP 2021170650 A JP2021170650 A JP 2021170650A
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led
ultraviolet irradiation
irradiation device
base member
leds
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JP7170349B2 (en
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史朗 飯田
Shiro Iida
賢二 板谷
Kenji Itaya
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Iida Shomei Co Ltd
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Iida Shomei Co Ltd
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Abstract

To provide an ultraviolet irradiation device that can replace a black light.SOLUTION: In an ultraviolet irradiation device 1, a plurality of LEDs 3 emitting ultraviolet light are equipped in an equipped substrate 15. The equipped substrate 15 is in the shape of a long band extending in a first direction, and the LEDs 3 are equipped at 50 mm-150 mm intervals in a longer direction of the equipped substrate 15.SELECTED DRAWING: Figure 2

Description

本発明は、紫外線を照射するＬＥＤを光源に使用した紫外線照射装置に関するものである。 The present invention relates to an ultraviolet irradiation device that uses an LED that irradiates ultraviolet rays as a light source.

従来から、装飾、紙幣や骨董品等の鑑定、樹脂やインクの硬化等に、蛍光作用の強い近紫外線を放射するブラックライト蛍光ランプがある（例えば、特許文献１）。
一方、近年、環境意識の高まりから、省電力化に優れたＬＥＤを光源に使用した照明装置が普及してきており、従来の紫外線ランプの代替としてＬＥＤを利用する線状光源（例えば、特許文献２）や、ブラックライト蛍光ランプに近い機能を有し且つＬＥＤを利用する紫外線照射装置が提案されている（例えば、特許文献３）。 Conventionally, there is a black light fluorescent lamp that emits near-ultraviolet rays having a strong fluorescent action for decoration, appraisal of banknotes and antiques, curing of resin and ink, etc. (for example, Patent Document 1).
On the other hand, in recent years, due to heightened environmental awareness, lighting devices that use LEDs as light sources, which are excellent in power saving, have become widespread, and linear light sources that use LEDs as an alternative to conventional ultraviolet lamps (for example, Patent Document 2). ), And an ultraviolet irradiation device that has a function similar to that of a black light fluorescent lamp and uses an LED has been proposed (for example, Patent Document 3).

特開平１１−２８３５７０号公報Japanese Unexamined Patent Publication No. 11-283570 特開２０１４−１９４９１３号公報 第３２段落Japanese Patent Application Laid-Open No. 2014-194913, paragraph 32 特開２０１３−１１４８７５号公報Japanese Unexamined Patent Publication No. 2013-114875

特許文献２及び特許文献３では、紫外線照射装置としてＬＥＤの使用が提案されているが、従来のブラックライトの代替として使用できるものは、具体的に提案されていない。一方で、ＬＥＤを高効率で使用したいとの要望もある。
本発明が解決しようとする課題は、上記の問題点に鑑み、ブラックライトの代替としても使用可能な紫外線照射装置を提供することにある。 In Patent Document 2 and Patent Document 3, the use of an LED as an ultraviolet irradiation device is proposed, but a device that can be used as a substitute for a conventional black light is not specifically proposed. On the other hand, there is also a desire to use LEDs with high efficiency.
An object to be solved by the present invention is to provide an ultraviolet irradiation device that can be used as a substitute for a black light in view of the above problems.

本発明は、紫外線を発する複数のＬＥＤが実装基板に実装されている紫外線照射装置において、前記実装基板は第１の方向に長い帯状をし、前記ＬＥＤは前記実装基板の長手方向に５０ｍｍ〜１５０ｍｍの間隔を置いて実装されている。 According to the present invention, in an ultraviolet irradiation device in which a plurality of LEDs emitting ultraviolet rays are mounted on a mounting substrate, the mounting substrate has a long strip shape in the first direction, and the LEDs are 50 mm to 150 mm in the longitudinal direction of the mounting substrate. It is implemented at intervals of.

本発明によれば、ブラックライトの代替としても使用できる。 According to the present invention, it can also be used as an alternative to black light.

実施形態の紫外線照射装置の外観斜視図である。It is external perspective view of the ultraviolet irradiation apparatus of embodiment. 実施形態の紫外線照射装置の分解斜視図である。It is an exploded perspective view of the ultraviolet irradiation apparatus of embodiment. 実施形態の紫外線照射装置の端部の縦断面図である。It is a vertical sectional view of the end part of the ultraviolet irradiation apparatus of embodiment. 実施形態の紫外線照射装置の端部の横断面図である。It is sectional drawing of the end part of the ultraviolet irradiation apparatus of embodiment. 変形例の紫外線照射装置の端部の横断面図である。It is sectional drawing of the end part of the ultraviolet irradiation apparatus of a modification. 変形例の紫外線照射装置の端部の横断面図である。It is sectional drawing of the end part of the ultraviolet irradiation apparatus of a modification.

＜概要＞
本発明の一態様に係る紫外線照射装置は、紫外線を発する複数のＬＥＤが実装基板に実装されている紫外線照射装置において、前記実装基板は第１の方向に長い帯状をし、前記ＬＥＤは前記実装基板の長手方向に５０ｍｍ〜１５０ｍｍの間隔を置いて実装されている。
別態様に係る紫外線照射装置において蛍光灯を利用した直管状のブラックライトが取り付け可能な照明器具に着脱自在に装着するための口金部材を前記第１の方向の両端に備える。
明細書の一態様に係る照射装置は、複数のＬＥＤに対して、当該ＬＥＤの定格電流よりも低い電流が供給される。
明細書の別態様に係る照射装置において、前記低い電流は前記定格電流に対して６０％以下である。
明細書の別態様に係る照射装置において、前記ＬＥＤは紫外線を照射し、前記ＬＥＤは定格電流が１Ｗ以上である。
明細書の一態様に係る紫外線照射装置において、横断面が「Ｃ」字状をする透光性カバーと前記透光性カバーの開口を塞ぐ弓状のベース部材とから構成され且つ外観形状が円筒状をする筐体と、紫外線を発する複数のＬＥＤが実装基板に実装されてなり且つ前記筐体内に収容されるＬＥＤモジュールと、前記筐体の端部に装着される口金部材と、前記口金部材から受電して前記ＬＥＤモジュールを点灯させるための点灯回路とを備える。
明細書の別態様に係る紫外線照射装置において、前記実装基板は前記筐体の長手方向に長い帯状をし、前記ＬＥＤは前記実装基板の長手方向に５０ｍｍ〜１５０ｍｍの間隔を置いて実装されている。
明細書の別態様に係る紫外線照射装置において、前記点灯回路は前記ＬＥＤに２００ｍＡ〜４００ｍＡの電流を供給する。 <Overview>
The ultraviolet irradiation device according to one aspect of the present invention is an ultraviolet irradiation device in which a plurality of LEDs emitting ultraviolet rays are mounted on a mounting substrate, the mounting substrate has a long strip shape in the first direction, and the LEDs are mounted. It is mounted at intervals of 50 mm to 150 mm in the longitudinal direction of the substrate.
In the ultraviolet irradiation device according to another aspect, base members for detachably attaching to a lighting fixture to which a straight tubular black light using a fluorescent lamp can be attached are provided at both ends in the first direction.
The irradiation device according to one aspect of the specification supplies a plurality of LEDs with a current lower than the rated current of the LEDs.
In the irradiation apparatus according to another aspect of the specification, the low current is 60% or less with respect to the rated current.
In the irradiation device according to another aspect of the specification, the LED irradiates ultraviolet rays, and the LED has a rated current of 1 W or more.
In the ultraviolet irradiation device according to one aspect of the specification, the ultraviolet irradiation device is composed of a translucent cover having a "C" -shaped cross section and an arch-shaped base member that closes the opening of the translucent cover, and has a cylindrical external shape. A housing having a shape, an LED module in which a plurality of LEDs emitting ultraviolet rays are mounted on a mounting substrate and housed in the housing, a base member mounted on an end portion of the housing, and the base member. It is provided with a lighting circuit for lighting the LED module by receiving power from.
In the ultraviolet irradiation device according to another aspect of the specification, the mounting substrate has a long strip shape in the longitudinal direction of the housing, and the LEDs are mounted at intervals of 50 mm to 150 mm in the longitudinal direction of the mounting substrate. ..
In the ultraviolet irradiation device according to another aspect of the specification, the lighting circuit supplies the LED with a current of 200 mA to 400 mA.

＜実施形態＞
以下に実施形態について、図面を参照しながら詳細に説明する。
１．全体構成
紫外線照射装置１は、紫外線を照射するＬＥＤ３を備えるＬＥＤモジュール５と、ＬＥＤモジュール５を搭載するためのベース部材７と、ＬＥＤモジュール５を覆うカバー部材９と、ＬＥＤ３を発光させるための点灯回路１１と、ソケットから商用電力を受電するための口金部材１３とを有する。
紫外線照射装置１は具体的には直管状をしている。紫外線照射装置１は、横断面が「Ｃ」字状をするカバー部材９と、カバー部材９の「Ｃ」の開口を塞ぐ弓状のベース部材７とから構成され且つ外観形状が円筒状をする筐体６と、複数のＬＥＤ３が実装基板１５に実装されてなり且つ筐体６内に収容されるＬＥＤモジュール５と、筐体６の端部に装着される口金部材１３と、口金部材１３から受電してＬＥＤモジュール５を点灯させるための点灯回路１１とを備える。 <Embodiment>
Hereinafter, embodiments will be described in detail with reference to the drawings.
1. 1. Overall configuration The ultraviolet irradiation device 1 includes an LED module 5 including an LED 3 that irradiates ultraviolet rays, a base member 7 for mounting the LED module 5, a cover member 9 for covering the LED module 5, and lighting for causing the LED 3 to emit light. It has a circuit 11 and a base member 13 for receiving commercial power from a socket.
Specifically, the ultraviolet irradiation device 1 has a straight tubular shape. The ultraviolet irradiation device 1 is composed of a cover member 9 having a "C" -shaped cross section and an arch-shaped base member 7 that closes the opening of the "C" of the cover member 9, and has a cylindrical external shape. From the housing 6, the LED module 5 in which a plurality of LEDs 3 are mounted on the mounting board 15 and housed in the housing 6, the base member 13 mounted on the end of the housing 6, and the base member 13. A lighting circuit 11 for receiving power to light the LED module 5 is provided.

２．各部構成
（１）ＬＥＤモジュール５
ＬＥＤモジュール５は、図２に示すように、長尺状の実装基板１５と、実装基板１５の長手方向に沿って間隔を置いて実装された複数個のＬＥＤ３とを有する。実装基板１５は、複数個のＬＥＤ３を所定の接続形態で実装するための実装パターンと、実装パターンと点灯回路１１とを接続するための端子パターンとからなる配線パターン（図示省略）を有している。
実装基板１５において、ＬＥＤ３が実装される側を表側と、ＬＥＤ３が実装されていない側を裏側とそれぞれする。なお、配線パターンは実装基板１５の表面に存在する。
後述のカバー部材９が拡散溝３５を有しているため、ＬＥＤ３から出射された紫外線（波長が３６５[ｎｍ]〜４０５[ｎｍ]の範囲にある。）が均一に拡散されやすくなり、実装基板１５に実装されるＬＥＤ３のピッチを大きくできる。具体的には、ＬＥＤ３のピッチを５０［ｍｍ］〜１２０［ｍｍ］にまで広げることができる。この場合、点灯中のＬＥＤ３の粒粒感はあるものの、ＬＥＤ３の半値角が１２０［度］程度あり、また、通常使用での被照射面はＬＥＤ３から１００［ｍｍ］以上離れており、実用上全く問題なく使用できる。なお、範囲を規定するＡ〜Ｂの表示は、Ａ以上Ｂ以下の範囲をさす。 2. Each part configuration (1) LED module 5
As shown in FIG. 2, the LED module 5 has a long mounting board 15 and a plurality of LEDs 3 mounted at intervals along the longitudinal direction of the mounting board 15. The mounting board 15 has a wiring pattern (not shown) including a mounting pattern for mounting a plurality of LEDs 3 in a predetermined connection form and a terminal pattern for connecting the mounting pattern and the lighting circuit 11. There is.
In the mounting board 15, the side on which the LED 3 is mounted is designated as the front side, and the side on which the LED 3 is not mounted is designated as the back side. The wiring pattern exists on the surface of the mounting board 15.
Since the cover member 9 described later has a diffusion groove 35, the ultraviolet rays (wavelengths in the range of 365 [nm] to 405 [nm]) emitted from the LED 3 are easily diffused uniformly, and the mounting substrate is easily diffused. The pitch of the LED 3 mounted on the 15 can be increased. Specifically, the pitch of the LED 3 can be expanded to 50 [mm] to 120 [mm]. In this case, although there is a grainy feeling of the LED3 during lighting, the half-value angle of the LED3 is about 120 [degrees], and the irradiated surface in normal use is 100 [mm] or more away from the LED3, which is practical. It can be used without any problems. In addition, the display of A to B that defines the range refers to the range of A or more and B or less.

（２）ベース部材７
主に図２及び図４を用いて説明する。
ベース部材７は長尺状をしている。ベース部材７はカバー部材９と組み合わされて筐体として機能する円筒を構成する。ベース部材７の横断面形状は長手方向に対して一定である。ベース部材７は横断面において弓形に似た形状をしている。
ベース部材７は、図４に示すように、弓形に似た形状をするベース本体１７と、ＬＥＤモジュール５を装着するためのモジュール装着手段１９と、カバー部材９を装着するためのカバー装着手段２１とを有している。
ベース本体１７は端部に口金部材１３を装着するためのねじ孔２３を有している。なお、ねじ孔２３はベース本体１７の長手方向と平行に延伸する。 (2) Base member 7
This will be described mainly with reference to FIGS. 2 and 4.
The base member 7 has an elongated shape. The base member 7 is combined with the cover member 9 to form a cylinder that functions as a housing. The cross-sectional shape of the base member 7 is constant with respect to the longitudinal direction. The base member 7 has a shape similar to a bow in the cross section.
As shown in FIG. 4, the base member 7 includes a base body 17 having a bow-shaped shape, a module mounting means 19 for mounting the LED module 5, and a cover mounting means 21 for mounting the cover member 9. And have.
The base body 17 has a screw hole 23 at the end for mounting the base member 13. The screw hole 23 extends in parallel with the longitudinal direction of the base body 17.

モジュール装着手段１９は、ベース本体１７における円弧面と反対側に設けられている。モジュール装着手段１９はＬＥＤモジュール５の実装基板１５の短手方向の端部を係止する係止構造により構成されている。
モジュール用の係止構造は、ＬＥＤモジュール５をベース本体１７の所定位置に載置した状態において、ＬＥＤモジュール５の実装基板１５の短手方向の両端から立設する立設部２５と、立設部２５から実装基板１５の表面へと張り出す張出部２７とを有する。なお、ＬＥＤモジュール５は、ベース本体１７と張出部２７との間に形成されている空間にベース部材７の端面から挿入されることで、ベース部材７に装着される。 The module mounting means 19 is provided on the side of the base body 17 opposite to the arc surface. The module mounting means 19 is configured by a locking structure that locks the end portion of the mounting board 15 of the LED module 5 in the lateral direction.
The locking structure for the module includes an upright portion 25 that stands up from both ends of the mounting board 15 of the LED module 5 in the lateral direction in a state where the LED module 5 is placed at a predetermined position on the base body 17. It has an overhanging portion 27 that projects from the portion 25 to the surface of the mounting substrate 15. The LED module 5 is attached to the base member 7 by being inserted into the space formed between the base body 17 and the overhanging portion 27 from the end surface of the base member 7.

カバー装着手段２１は、ベース本体１７における円弧面と反対側に設けられている。カバー装着手段２１は、カバー部材９の折曲部（開口側端部）２９を係止する係止構造により構成されている。 The cover mounting means 21 is provided on the side of the base body 17 opposite to the arc surface. The cover mounting means 21 is configured by a locking structure that locks the bent portion (opening side end portion) 29 of the cover member 9.

カバー用の係止構造は、モジュール用の係止構造を利用している。カバー用の係止構造は、立設部２５の立設先端からＬＥＤモジュール５が存在する側と反対側へと屈曲する屈曲部３１により構成される。屈曲部３１の屈曲先端は、横断面において円形状をしている。屈曲部３１とベース本体１７との間の空間にカバー部材９の開口端部である折曲部２９が係合する。なお、カバー部材９は、ベース部材７の長手方向の端面からベース本体１７と屈曲部３１との間に挿入されることで、ベース部材７に装着される。 The locking structure for the cover utilizes the locking structure for the module. The locking structure for the cover is composed of a bent portion 31 that bends from the standing tip of the standing portion 25 to the side opposite to the side where the LED module 5 exists. The bent tip of the bent portion 31 has a circular shape in the cross section. The bent portion 29, which is the open end of the cover member 9, engages with the space between the bent portion 31 and the base body 17. The cover member 9 is attached to the base member 7 by being inserted between the base body 17 and the bent portion 31 from the end surface of the base member 7 in the longitudinal direction.

ベース本体１７は、カバー部材９と組み合わされた円筒においてベース本体１７の周端と円筒の中心とを結ぶ角度が７０［度］〜１２０［度］の範囲内、好ましくは８０［度］〜１１０［度］の範囲内になるように、構成されている。これにより、ＬＥＤ３とカバー部材９との距離を大きくできる。なお、ＬＥＤ３とカバー部材９との間隔を大きくすることで、カバー部材９の紫外線による劣化が抑制される。
紫外線照射装置１の横断面において、一方の立設部２５の立設先端とＬＥＤモジュール５のＬＥＤ３の表面中央とを結ぶ仮想線と他方の立設部２５の立設先端とＬＥＤモジュール５のＬＥＤ３の表面中央とを結ぶ仮想線との間の角度（ＬＥＤ３の光の主出射方向を含む方の角度である。）が、ＬＥＤ３の半値角よりも大きくなっている。具体的には、ＬＥＤ３の半値角に対して、０［度］〜５０［度］の範囲にあればよい。好ましくは、ＬＥＤ３の半値角に対して、２０［度］〜４０［度］の範囲あればよい。この範囲にすることで、照射時に紫外線照射装置１に立設部２５の影が現れるのを防止することができる。 The base body 17 has an angle of 70 [degrees] to 120 [degrees], preferably 80 [degrees] to 110, in a cylinder combined with the cover member 9 that connects the peripheral end of the base body 17 and the center of the cylinder. It is configured to be within the range of [degree]. As a result, the distance between the LED 3 and the cover member 9 can be increased. By increasing the distance between the LED 3 and the cover member 9, deterioration of the cover member 9 due to ultraviolet rays is suppressed.
In the cross section of the ultraviolet irradiation device 1, a virtual line connecting the standing tip of one standing portion 25 and the center of the surface of LED 3 of the LED module 5, the standing tip of the other standing portion 25, and the LED 3 of the LED module 5 The angle between the virtual line connecting to the center of the surface of the LED 3 (the angle including the main emission direction of the light of the LED 3) is larger than the half-value angle of the LED 3. Specifically, it may be in the range of 0 [degrees] to 50 [degrees] with respect to the half-value angle of LED3. Preferably, it may be in the range of 20 [degrees] to 40 [degrees] with respect to the half-value angle of LED3. By setting this range, it is possible to prevent the shadow of the standing portion 25 from appearing on the ultraviolet irradiation device 1 during irradiation.

（３）カバー部材
主に図２及び図４を用いて説明する。
カバー部材９は長尺状をしている。カバー部材９の横断面形状は長手方向に対して一定である。カバー部材９は、下部側に開口を有し、円筒の円形の下部を切り欠いたような形状をしている。カバー部材９における開口に面する端部（開口側端部である。）は、下部を切り欠かれていない円筒の中心に向かう折曲部２９となっている。
カバー部材９は、ベース本体１７と屈曲部３１との間に形成されている空間に折曲部２９がベース部材７の端面から挿入されることで、ベース部材７に装着される。折曲部２９が円筒の中心に向かって延伸し、ベース部材７の屈曲部３１の屈曲先端が円形状しているため、カバー部材９がベース部材７から外れるのを防止できる。 (3) Cover member This will be described mainly with reference to FIGS. 2 and 4.
The cover member 9 has an elongated shape. The cross-sectional shape of the cover member 9 is constant with respect to the longitudinal direction. The cover member 9 has an opening on the lower side, and is shaped like a cylindrical lower portion cut out. The end of the cover member 9 facing the opening (the end on the opening side) is a bent portion 29 toward the center of the cylinder whose lower portion is not cut out.
The cover member 9 is attached to the base member 7 by inserting the bent portion 29 from the end surface of the base member 7 into the space formed between the base body 17 and the bent portion 31. Since the bent portion 29 extends toward the center of the cylinder and the bent tip of the bent portion 31 of the base member 7 has a circular shape, it is possible to prevent the cover member 9 from coming off from the base member 7.

カバー部材９は、横断面において、カバー部材９の長手方向に延伸する拡散溝３５を内周面に有している。拡散溝３５は周方向に等間隔で複数本形成されている。拡散溝３５の深さは、０．１［ｍｍ］〜０．５［ｍｍ］の範囲内にあり、拡散溝３５の横断面は「Ｖ」字状をし、その角度が１．２［°］〜３．８［°］の範囲内にある。これにより、ＬＥＤ３から出射される光が拡散される。
カバー部材９は、紫外線透過性の高いアクリル樹脂（例えば、クラレ社製、商品名：パラグラス、品番：ＵＶ００等である。）により構成される。なお、アクリル樹脂にシリコーン微粒子等の拡散粒子を混入させたカバー（所謂、乳白色カバーである）では紫外線を透過しないため、上記の拡散溝３５は有効である。 The cover member 9 has a diffusion groove 35 extending in the longitudinal direction of the cover member 9 on the inner peripheral surface in the cross section. A plurality of diffusion grooves 35 are formed at equal intervals in the circumferential direction. The depth of the diffusion groove 35 is in the range of 0.1 [mm] to 0.5 [mm], the cross section of the diffusion groove 35 is "V" shaped, and the angle is 1.2 [°]. ] To 3.8 [°]. As a result, the light emitted from the LED 3 is diffused.
The cover member 9 is made of an acrylic resin having high ultraviolet transparency (for example, manufactured by Kuraray Co., Ltd., trade name: paragrass, product number: UV00, etc.). The above diffusion groove 35 is effective because the cover (so-called milky white cover) in which diffusion particles such as silicone fine particles are mixed with the acrylic resin does not transmit ultraviolet rays.

（４）点灯回路
主に図２〜図４を用いて説明する。
点灯回路１１は、口金部材１３を介して受電した商用電力を直流電力に変換してＬＥＤモジュール５に供給する。点灯回路１１は、例えば、整流回路、平滑回路、電変換回路等を有している。
点灯回路１１を構成する電子部品３７は回路基板３９に実装されている。図では、電子部品３７としてコンデンサのみが現れている。点灯回路１１は口金部材１３内に収容される。点灯回路１１の固定については後述する。
点灯回路１１はＬＥＤ３に対して２００［ｍＡ］〜４００［ｍＡ］の電流を供給するように構成されている（なお、この場合のＬＥＤ３の電力は、０．７［Ｗ］〜２．０［Ｗ］となる。）。これにより、ＬＥＤ３から出射される紫外線の放射強度を向上させることができる。また、放射強度を向上できるため、ＬＥＤ３のピッチを広げることができ、使用するＬＥＤ３の個数を少なくできる。特に、高出力タイプのＬＥＤ３に定格電流よりも低い電流を供給しているため高効率となる。なお、ここでいう「高出力タイプ」は定格電力が１［Ｗ］以上のものをいう。高出力タイプのＬＥＤはチップが大きく効率が良いため、より一層光の取り出し効率が向上する。 (4) Lighting circuit This will be described mainly with reference to FIGS. 2 to 4.
The lighting circuit 11 converts the commercial power received via the base member 13 into DC power and supplies it to the LED module 5. The lighting circuit 11 includes, for example, a rectifier circuit, a smoothing circuit, an electric conversion circuit, and the like.
The electronic component 37 constituting the lighting circuit 11 is mounted on the circuit board 39. In the figure, only the capacitor appears as the electronic component 37. The lighting circuit 11 is housed in the base member 13. The fixing of the lighting circuit 11 will be described later.
The lighting circuit 11 is configured to supply a current of 200 [mA] to 400 [mA] to the LED 3 (note that the power of the LED 3 in this case is 0.7 [W] to 2.0 []. W]. Thereby, the radiation intensity of the ultraviolet rays emitted from the LED 3 can be improved. Further, since the radiation intensity can be improved, the pitch of the LEDs 3 can be widened, and the number of LEDs 3 used can be reduced. In particular, high efficiency is achieved because a current lower than the rated current is supplied to the high output type LED3. The "high output type" here refers to a type having a rated power of 1 [W] or more. Since the high output type LED has a large chip and is highly efficient, the light extraction efficiency is further improved.

（５）口金部材１３
口金部材１３は、現行のブラックライト蛍光灯が着脱自在に装着される器具本体のソケットに装着自在な構成されている。口金部材１３は、底壁４１と筒壁４３とを有する樹脂製の有底筒体４５と、有底筒体４５の底壁４１に設けられた口金ピン４７とを備える。ここでの口金ピン４７はＧタイプである。また、有底筒体４５は黒色をしている。これにより、紫外線照射装置がブラックライトであることが認識しやすくなる。
口金ピン４７は、有底筒体４５の内部に配され且つ底壁４１に装着されるベース部４９と、底壁４１から外部へと延出するピン部５１とを備える。なお、ピン部５１は２本あるが、２本のピン部５１は１つのベース部４９から延出する。
有底筒体４５は筒壁４３に段差４３ａを有する。段差４３ａは少なくとも口金ピン４７のベース部４９よりも開口側に設けられている。段差４３ａは開口側が拡径する段差である。筒壁４３は、紫外線照射装置１においてベース部材７が存在する側に、口金部材１３をベース部材７に取り付けるための取付手段５３を有している。 (5) Base member 13
The base member 13 is configured to be freely attachable to the socket of the main body of the fixture to which the current black light fluorescent lamp is detachably attached. The base member 13 includes a resin-made bottomed cylinder 45 having a bottom wall 41 and a cylinder wall 43, and a base pin 47 provided on the bottom wall 41 of the bottomed cylinder 45. The base pin 47 here is a G type. The bottomed cylinder 45 is black. This makes it easier to recognize that the ultraviolet irradiation device is a black light.
The base pin 47 includes a base portion 49 arranged inside the bottomed cylinder 45 and mounted on the bottom wall 41, and a pin portion 51 extending outward from the bottom wall 41. Although there are two pin portions 51, the two pin portions 51 extend from one base portion 49.
The bottomed cylinder 45 has a step 43a on the cylinder wall 43. The step 43a is provided at least on the opening side of the base portion 49 of the base pin 47. The step 43a is a step whose diameter increases on the opening side. The cylinder wall 43 has an attachment means 53 for attaching the base member 13 to the base member 7 on the side where the base member 7 exists in the ultraviolet irradiation device 1.

ここでは、口金部材１３のベース部材７の取り付けにねじ部材５５を利用している。このため、筒壁４３は、ねじ部材５５を取り付けるための取付け凹部５７を有し、ねじ部材５５が挿通する部分の肉厚が厚くなっている。
底壁４１には段差４３ａの位置まで伸びるボス部５９が設けられている。ボス部５９にはねじ穴が設けられている。
点灯回路１１の回路基板３９は筒壁４３の内周面に対応した形状をし、点灯回路１１が有底筒体４５の開口から挿入されると、回路基板３９の周縁部が段差４３ａに当接するようになっている。この状態で、回路基板３９は底壁４１のボス部５９のねじ穴に対応する部位に貫通孔を有し、この貫通孔を挿通するねじ体６１によって点灯回路１１が口金部材１３の内部に固定される。 Here, the screw member 55 is used for attaching the base member 7 of the base member 13. Therefore, the cylinder wall 43 has a mounting recess 57 for mounting the screw member 55, and the wall thickness of the portion through which the screw member 55 is inserted is thick.
The bottom wall 41 is provided with a boss portion 59 extending to the position of the step 43a. The boss portion 59 is provided with a screw hole.
The circuit board 39 of the lighting circuit 11 has a shape corresponding to the inner peripheral surface of the cylinder wall 43, and when the lighting circuit 11 is inserted through the opening of the bottomed cylinder 45, the peripheral edge of the circuit board 39 hits the step 43a. It is designed to come into contact. In this state, the circuit board 39 has a through hole at a portion corresponding to the screw hole of the boss portion 59 of the bottom wall 41, and the lighting circuit 11 is fixed to the inside of the base member 13 by the screw body 61 through which the through hole is inserted. Will be done.

３．実施例
（１）実施品１
本発明を適用した発明品の一実施例について説明する。
発明品の紫外線照射装置は、直径が３２．５［ｍｍ］で、全長が１，１９８［ｍｍ］である。ＬＥＤ数は１０個である。ＬＥＤへの投入電流は２７０［ｍＡ］であり、ランプ電力は１０［Ｗ］である。ＬＥＤのピッチは１１０［ｍｍ］である。紫外線の放射強度は６６［μＷ／ｃｍ２］である。紫外線照射装置の寿命は２０，０００［時間］である。
（２）実施品２
本発明を適用した発明品の他の実施例について説明する。
発明品の紫外線照射装置は、直径が３２．５［ｍｍ］で、全長が１，１９８［ｍｍ］である。ＬＥＤ数は１８個である。ＬＥＤへの投入電流は３００［ｍＡ］である。ＬＥＤのピッチは６０［ｍｍ］である。ランプ電力は２０［Ｗ］である。紫外線の放射強度は１４０［μＷ／ｃｍ２］である。紫外線照射装置の寿命は２０，０００［時間］である。
（３）現行ブラックライト蛍光灯
実施品１及び２のサイズと同じ現行のブラックライト蛍光灯について説明する。
ブラックライト蛍光灯は、直径が３２．５［ｍｍ］で、全長が１，１９８［ｍｍ］である。ランプ電力は４０［Ｗ］である。紫外線の放射強度は６６［μＷ／ｃｍ２］である。ブラックライト蛍光灯の寿命は５，０００［時間］である。 3. 3. Example (1) Example product 1
An example of an invention product to which the present invention is applied will be described.
The ultraviolet irradiation device of the invention has a diameter of 32.5 [mm] and a total length of 1,198 [mm]. The number of LEDs is 10. The input current to the LED is 270 [mA], and the lamp power is 10 [W]. The LED pitch is 110 [mm]. The radiant intensity of ultraviolet rays is 66 [μW / cm 2 ]. The life of the ultraviolet irradiation device is 20,000 [hours].
(2) Implemented product 2
Other examples of the invention to which the present invention is applied will be described.
The ultraviolet irradiation device of the invention has a diameter of 32.5 [mm] and a total length of 1,198 [mm]. The number of LEDs is 18. The input current to the LED is 300 [mA]. The LED pitch is 60 [mm]. The lamp power is 20 [W]. The radiant intensity of ultraviolet rays is 140 [μW / cm 2 ]. The life of the ultraviolet irradiation device is 20,000 [hours].
(3) Current Black Light Fluorescent Lamp The current black light fluorescent lamp having the same size as the implemented products 1 and 2 will be described.
The black light fluorescent lamp has a diameter of 32.5 [mm] and a total length of 1,198 [mm]. The lamp power is 40 [W]. The radiant intensity of ultraviolet rays is 66 [μW / cm 2 ]. The life of a black light fluorescent lamp is 5,000 [hours].

＜変形例＞
以上、一実施形態に係る紫外線照射装置を説明したが、この実施形態に限られるものではなく、例えば、以下のような変形例であってもよい。また、実施形態と変形例とを組み合わせたものでもよいし、変形例同士を組み合わせたものでもよい。また、実施形態や変形例に記載していない例や要旨を逸脱しない範囲の設計変更があっても本発明に含まれる。 <Modification example>
Although the ultraviolet irradiation device according to one embodiment has been described above, the present invention is not limited to this embodiment, and for example, the following modified examples may be used. Further, the embodiment and the modified example may be combined, or the modified examples may be combined with each other. Further, even if there is a design change within a range not deviating from the gist or an example not described in the embodiment or the modified example, it is included in the present invention.

１．ブラックライト
実施形態に係る紫外線照射装置１は、現行のブラックライト蛍光灯の代替用である。つまり、紫外線照射装置１は、現行のブラックライト蛍光灯が取り付けられる照明器具に着脱自在に装着して使用できる。
しかしながら、紫外線照射装置は、例えばＧタイプ以外の専用の接続端子を有し、専用の照明器具に取り付けるような構造にしてもよい。また、紫外線照射装置に直接商用電源を接続して、照明器具等を使用しない紫外線照射装置として構成してもよい。
ブラックライト代替を目的としていない場合、筐体の外観形状は円筒状をしなくてもよく、例えば、断面が四角形状をし全体形状が筒状をするような形状であってもよい。この場合、例えば、カバー部材の形状を直線的な「コ」字状にし、ベース部材の形状を矩形状とすることで実施できる。なお、ベース部材は、ＬＥＤ発光時の熱を放出するヒートシンク機能を有しているため、外部に露出していることが好ましい。 1. 1. The ultraviolet irradiation device 1 according to the black light embodiment is a substitute for the current black light fluorescent lamp. That is, the ultraviolet irradiation device 1 can be detachably attached to a lighting fixture to which the current black light fluorescent lamp is attached.
However, the ultraviolet irradiation device may have a structure such that it has a dedicated connection terminal other than the G type and is attached to a dedicated lighting fixture. Further, a commercial power source may be directly connected to the ultraviolet irradiation device to form an ultraviolet irradiation device that does not use a lighting fixture or the like.
When the purpose is not to replace the black light, the external shape of the housing does not have to be cylindrical, and may be, for example, a shape having a quadrangular cross section and a tubular shape as a whole. In this case, for example, the shape of the cover member may be a linear "U" shape, and the shape of the base member may be a rectangular shape. Since the base member has a heat sink function of releasing heat when the LED emits light, it is preferable that the base member is exposed to the outside.

２．カバー部材
カバー部材９の拡散溝３５は、長尺状の長手方向に沿って延伸しているが、例えば、短手方向に延伸してもよい。また、ベース部材との結合は、係止構造以外であってもよい。例えば、ねじや接着剤により結合してもよい。
３．ベース部材
ベース部材７は、ＬＥＤモジュール５を実装する部分以外が、外部に露出しているが、ＬＥＤ発光時に発生する熱量が少ない場合（例えば、ＬＥＤの投入電流が小さい場合などである。）は、外部に露出する部分を有していなくてもよい。
外部に露出しない一例として、図５に示すように、ベース部材１０７が円筒状のカバー部材１０９の内部に配されている照明装置１０１がある。なお、ベース部材１０７は、カバー部材１０９のリブ１０９ａ，１０９ｂにより係止された状態で、ねじ部材５５を介して口金部材１３に固定される。ＬＥＤモジュール１０５はベース部材１０７の係止片１０７ａ，１０７ｂによりベース部材１０７に装着される。
＜その他＞
（１）実施形態では紫外線ＬＥＤを利用したが、例えば、青色光は発するＬＥＤを混合させてもよい。これにより補虫効果を向上させることができる。さらに、青色光をベースにして白色光を発する（蛍光体を利用する）ＬＥＤを混合させてもよい。この場合、紫外線による効果と補虫効果の他、作業用の照明としての効果も得られる。なお、紫外線ＬＥＤの他に、作業用照明として白色ＬＥＤを備えてもよい。
（２）実施形態では高出力タイプのＬＥＤに対して定格電流より低い電流（定格電流の４０（％）〜６０（％）である。）を供給することで、投入電流に対する光の取り出し効率（発光効率）を向上させている。これは、紫外線ＬＥＤだけでなく、青色ＬＥＤや白色ＬＥＤについても適用できる。つまり、光の取り出し効率の改善の観点から、高出力タイプのＬＥＤを定格電流よりも低い電流値で発光させるという別発明が存在し、当該別発明は、実施形態で説明した紫外線照射装置だけでなく、一般照明用の照射装置にも適用できる。この場合、樹脂材料からなるカバー部材は拡散粒子を有してもよい（所謂、乳白色カバーである）。また、カバー部材の拡散溝はあった方が良いが、拡散粒子の混入量次第で拡散溝はなくてもよい。
ＬＥＤに供給する電流に着目する場合、カバー体の横断面は「Ｃ」字状であったが、特に限定する必要はなく、例えば、上述のような開口を有しない断面形状であってもよいし、円以外の形状（例えば多角形状）の横断面形状であってもよい。
（３）実施形態ではＬＥＤへ供給する電流を定格電流又はそれより低い電流としているが、もさらに低い電流を供給してもよい。この場合、ベース部材はヒートシンクとしての機能を有しておらず、ＬＥＤモジュールを搭載する機能を有する。
低い電流をＬＥＤに供給する場合、発熱量を抑制できるため、カバー部材に直接ＬＥＤモジュールを装着するような構成であってもよい。この場合、カバー部材は開口を有しない横断面形状であってもよい。
ベース部材を有さず、両端以外に開口を有さないカバー部材を用いた一例として、図６に示すように、ＬＥＤモジュール２０５が円筒状のカバー部材２０９の内部に配されている照明装置２０１がある。ＬＥＤモジュール２０５は、カバー部材２０９の一対の装着溝２０９ａ，２０９ｂに実装基板２１５の短手方向の両端が挿入された状態で、口金部材１３に接着剤を介して固定される。 2. Cover member The diffusion groove 35 of the cover member 9 extends along the long longitudinal direction, but may be extended in the lateral direction, for example. Further, the connection with the base member may be other than the locking structure. For example, they may be bonded with screws or adhesives.
3. 3. Base member The base member 7 is exposed to the outside except for the portion where the LED module 5 is mounted, but when the amount of heat generated when the LED emits light is small (for example, when the input current of the LED is small). , It is not necessary to have a portion exposed to the outside.
As an example of not being exposed to the outside, as shown in FIG. 5, there is a lighting device 101 in which a base member 107 is arranged inside a cylindrical cover member 109. The base member 107 is fixed to the base member 13 via the screw member 55 in a state of being locked by the ribs 109a and 109b of the cover member 109. The LED module 105 is attached to the base member 107 by the locking pieces 107a and 107b of the base member 107.
<Others>
(1) Although an ultraviolet LED is used in the embodiment, for example, an LED that emits blue light may be mixed. Thereby, the insect repellent effect can be improved. Further, LEDs that emit white light (using a phosphor) based on blue light may be mixed. In this case, in addition to the effect of ultraviolet rays and the insect repellent effect, the effect as lighting for work can also be obtained. In addition to the ultraviolet LED, a white LED may be provided as work lighting.
(2) In the embodiment, by supplying a current lower than the rated current (40 (%) to 60 (%) of the rated current) to the high output type LED, the light extraction efficiency with respect to the input current ( Light emission efficiency) is improved. This applies not only to UV LEDs, but also to blue LEDs and white LEDs. That is, from the viewpoint of improving the light extraction efficiency, there is another invention in which the high output type LED emits light at a current value lower than the rated current, and the other invention is only the ultraviolet irradiation device described in the embodiment. It can also be applied to an irradiation device for general lighting. In this case, the cover member made of the resin material may have diffuse particles (so-called milky white cover). Further, although it is preferable that the cover member has a diffusion groove, the diffusion groove may not be provided depending on the amount of the diffusion particles mixed.
When focusing on the current supplied to the LED, the cross section of the cover body has a "C" shape, but it is not particularly limited, and for example, the cross section shape having no opening as described above may be used. However, it may have a cross-sectional shape having a shape other than a circle (for example, a polygonal shape).
(3) In the embodiment, the current supplied to the LED is the rated current or a lower current, but a lower current may be supplied. In this case, the base member does not have a function as a heat sink, but has a function of mounting the LED module.
When a low current is supplied to the LED, the amount of heat generated can be suppressed, so that the LED module may be mounted directly on the cover member. In this case, the cover member may have a cross-sectional shape having no opening.
As an example of using a cover member having no base member and no openings other than both ends, as shown in FIG. 6, the lighting device 201 in which the LED module 205 is arranged inside the cylindrical cover member 209. There is. The LED module 205 is fixed to the base member 13 via an adhesive with both ends of the mounting substrate 215 in the lateral direction inserted into the pair of mounting grooves 209a and 209b of the cover member 209.

１ 紫外線照明装置
３ ＬＥＤ
５ ＬＥＤモジュール
６ 筐体
７ ベース部材
９ カバー部材
１１ 点灯回路
１３ 口金部材 1 UV lighting device 3 LED
5 LED module 6 Housing 7 Base member 9 Cover member 11 Lighting circuit 13 Base member

Claims (2)

紫外線を発する複数のＬＥＤが実装基板に実装されている紫外線照射装置において、
前記実装基板は第１の方向に長い帯状をし、
前記ＬＥＤは前記実装基板の長手方向に５０ｍｍ〜１５０ｍｍの間隔を置いて実装されている
紫外線照射装置。 In an ultraviolet irradiation device in which a plurality of LEDs that emit ultraviolet rays are mounted on a mounting substrate.
The mounting board has a long strip in the first direction.
The LED is an ultraviolet irradiation device mounted at intervals of 50 mm to 150 mm in the longitudinal direction of the mounting substrate. 蛍光灯を利用した直管状のブラックライトが取り付け可能な照明器具に着脱自在に装着するための口金部材を前記第１の方向の両端に備える
請求項１に記載の紫外線照射装置。 The ultraviolet irradiation device according to claim 1, wherein base members for detachably attaching to a lighting fixture to which a straight tubular black light using a fluorescent lamp can be attached are provided at both ends in the first direction.
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