JPH0926355A - Flame sensor - Google Patents
Flame sensorInfo
- Publication number
- JPH0926355A JPH0926355A JP19807895A JP19807895A JPH0926355A JP H0926355 A JPH0926355 A JP H0926355A JP 19807895 A JP19807895 A JP 19807895A JP 19807895 A JP19807895 A JP 19807895A JP H0926355 A JPH0926355 A JP H0926355A
- Authority
- JP
- Japan
- Prior art keywords
- tube
- circuit board
- printed circuit
- elastic holder
- 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.)
- Granted
Links
- 229920001296 polysiloxane Polymers 0.000 claims abstract 3
- 238000001514 detection method Methods 0.000 claims description 11
- 239000004020 conductor Substances 0.000 claims description 10
- 239000011347 resin Substances 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 7
- 239000000428 dust Substances 0.000 abstract description 14
- 230000035945 sensitivity Effects 0.000 abstract description 7
- 239000002216 antistatic agent Substances 0.000 abstract description 6
- 230000005611 electricity Effects 0.000 abstract description 6
- 230000003068 static effect Effects 0.000 abstract description 6
- 239000011248 coating agent Substances 0.000 abstract description 4
- 238000000576 coating method Methods 0.000 abstract description 4
- 239000007921 spray Substances 0.000 abstract 1
- 229910052710 silicon Inorganic materials 0.000 description 7
- 239000010703 silicon Substances 0.000 description 7
- 238000005507 spraying Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 3
- 238000000825 ultraviolet detection Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 230000001846 repelling effect Effects 0.000 description 1
Landscapes
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、炎感知器に関する
ものである。TECHNICAL FIELD The present invention relates to a flame detector.
【０００２】[0002]
【従来の技術】紫外線検知管を検出素子とする従来の炎
感知器は、図５及び図６に示す如きものである。尚、図
５及び図６では本体とカバーからなるケースと、基板上
に実装する各種電子部品は省略している。2. Description of the Related Art A conventional flame detector using an ultraviolet detector tube as a detector is shown in FIGS. 5 and 6, the case including the main body and the cover and various electronic components mounted on the substrate are omitted.
【０００３】該炎感知器では、基板Ａに弾性ホルダーＢ
を固定し、紫外線検知管Ｃを該弾性ホルダーＢの上面の
凹部Ｂ′にセットするものである。尚、紫外線検知管Ｃ
の２本のリード脚Ｄ、Ｅは基板Ａに接続されている。In the flame detector, an elastic holder B is mounted on a substrate A.
Is fixed, and the ultraviolet ray detecting tube C is set in the concave portion B'on the upper surface of the elastic holder B. Incidentally, the ultraviolet detector tube C
The two lead legs D and E are connected to the substrate A.
【０００４】[0004]
【発明が解決しようとする課題】斯かる従来のものにあ
っては、弾性ホルダーＢがゴム等の絶縁材からなる弾性
ホルダーであり、また２本のリード脚Ｄ、Ｅが剥き出し
である。このため、紫外線検知管Ｃの電極間に３００〜
４００Ｖの高電圧を印加したときに発生する静電気によ
って、図６に示す如く紫外線検知管Ｃの表面とリード脚
Ｄ、Ｅに埃が吸着される。尚、Ｆは埃を示す。In such a conventional one, the elastic holder B is an elastic holder made of an insulating material such as rubber, and the two lead legs D and E are exposed. Therefore, between the electrodes of the UV detector tube C
Due to static electricity generated when a high voltage of 400 V is applied, dust is adsorbed on the surface of the ultraviolet detection tube C and the lead legs D and E as shown in FIG. In addition, F shows dust.
【０００５】そして、紫外線検知管Ｃの表面に埃が吸着
されると、紫外線の透過率が低下して感度が劣化し、ま
たリード脚に埃が吸着されると、それが水分を含んだ場
合に電極間がリークされ、紫外線検知管Ｃへの印加電圧
が低下して感度が劣化するという問題が起こる。When dust is adsorbed on the surface of the ultraviolet ray detector tube C, the transmittance of ultraviolet rays is lowered to deteriorate the sensitivity, and when dust is adsorbed on the lead legs, it contains water. There is a problem that the electrodes are leaked, the voltage applied to the ultraviolet ray detector tube C is lowered, and the sensitivity is deteriorated.
【０００６】そこで、この問題点を解決すべく、例えば
特開平５−８１５８０号、実開平５−３３２９４号公開
公報に示されるような、紫外線検知管に静電気防止剤を
スプレーで吹き付ける手段も提案されたが、効力が長時
間持続しないという欠点があった。そしてまたこのた
め、短い周期で頻繁にスプレー作業をしなければならな
いという問題もあった。In order to solve this problem, therefore, there has been proposed a means for spraying an antistatic agent onto an ultraviolet ray detecting tube by spraying, as disclosed in, for example, Japanese Unexamined Patent Publication No. 5-81580 and Japanese Utility Model Laid-Open No. 5-33294. However, there is a drawback that the effect does not last for a long time. Further, for this reason, there is also a problem that the spraying work must be frequently performed in a short cycle.
【０００７】また、スプレーする場合に、静電気防止剤
として長時間効力が持続する液晶表示の窓やタッチパネ
ルに使用するものを用いようとすると、紫外線の透過率
が悪くなり、感度が劣化するため、実際上使用すること
ができない。Further, when spraying, if an antistatic agent used for a liquid crystal display window or a touch panel, which has a long-lasting effect, is used, the transmittance of ultraviolet rays deteriorates and the sensitivity deteriorates. Practically unusable.
【０００８】また、この他に実開昭５５−１７０６２５
号公開公報に示された如き、紫外線検知管をキャップで
覆い、静電遮断することによって埃の付着を防止するも
のもあるが、別部品としてキャップを要するため費用が
かかり、また検出素子から引き出されるリード線が露出
しているため、これに埃が付着して電極間がリークされ
る虞がある。[0008] In addition to this, the actual development of Sho 55-170625
As shown in Japanese Unexamined Patent Application Publication, there is a device that prevents the adhesion of dust by covering the ultraviolet ray detector tube with a cap and electrostatically blocking it, but it is expensive because it requires a cap as a separate part, and it is pulled out from the detection element. Since the lead wire to be exposed is exposed, dust may adhere to the lead wire and leak between the electrodes.
【０００９】本発明は上記の点に鑑みなされたものであ
って、静電気防止剤をスプレーする等の手間を要さず、
長期間にわたって紫外線検知管の表面への静電気による
埃の吸着を抑えることができると共に、併せてリード脚
への埃の付着を阻止して紫外線検知管の感度の長期間の
安定化を図ることができるようになした炎感知器を提供
せんとするものである。The present invention has been made in view of the above points, and does not require labor such as spraying an antistatic agent,
It is possible to suppress the adsorption of dust on the surface of the UV detector tube due to static electricity for a long period of time, and also to prevent the dust from adhering to the lead legs to stabilize the sensitivity of the UV detector tube for a long period of time. It is intended to provide a flame detector that is made possible.
【００１０】[0010]
【課題を解決するための手段】而して、本発明の要旨と
するところは、円筒状の本体と、後記紫外線検知管が覗
く感知窓を開設した、前記本体に被着するカバーとをも
ってケースを構成し、該ケース内に電子部品を実装した
プリント基板を装備すると共に該プリント基板に弾性ホ
ルダーをもって紫外線検知管を保持せしめた炎感知器に
おいて、前記弾性ホルダーに導電性を持たせると共に該
弾性ホルダーをプリント基板に電気的に接続したことを
特徴とする炎感知器にある。SUMMARY OF THE INVENTION The gist of the present invention is to provide a case having a cylindrical main body and a cover attached to the main body, which has a detection window through which an ultraviolet ray detection tube, which will be described later, is opened. In a flame detector in which a printed circuit board having electronic components mounted in the case is provided and an ultraviolet ray detecting tube is held by an elastic holder on the printed circuit board, the elastic holder is made conductive and the elastic The flame detector is characterized in that the holder is electrically connected to the printed circuit board.
【００１１】また紫外線検知管のリード脚に、樹脂、望
ましくはシリコンによるコーティングを施してもよい。The lead leg of the ultraviolet detector tube may be coated with resin, preferably silicon.
【００１２】また、紫外線検知管のリード脚を柔軟性を
有する帯状又は線状導電体を介してプリント基板に接続
するようになし、そしてこれら紫外線検知管のリード脚
と帯状又は線状導電体に樹脂によるコーティングを施す
ようにしてもよい。このようにすれば、紫外線検知管の
リード脚を折り曲げた後プリント基板の接続孔の位置に
合わせて広げたり狭めたりするとき、リード脚のつけ根
のガラスが割れることを防ぐことができる。また、勿論
樹脂によるコーティング効果は前記と同様である。Further, the lead legs of the ultraviolet ray detector tube are connected to the printed circuit board through a flexible strip-shaped or linear conductor, and the lead leg of the ultraviolet ray detector tube and the band-shaped or linear conductor are connected. You may make it coat with resin. This makes it possible to prevent the glass at the base of the lead leg from breaking when the lead leg of the ultraviolet ray detector tube is bent and then widened or narrowed according to the position of the connection hole of the printed circuit board. The coating effect of the resin is of course the same as above.
【００１３】また、弾性ホルダーの上縁に、紫外線検知
管のセット用凹部を挟んで少なくとも２個宛所要の深さ
の切欠部を設けるようにしてもよい。このようにすれ
ば、切欠部から覗いて紫外線検知管の電極板が正しい角
度に保持されているか否かを容易に確認するすることが
できる。Further, at least two notches having a required depth may be provided on the upper edge of the elastic holder so as to sandwich the recess for setting the ultraviolet ray detector tube. With this configuration, it is possible to easily check whether or not the electrode plate of the ultraviolet ray detecting tube is held at the correct angle by looking through the cutout portion.
【００１４】本発明は上記の如き構成であるから、次の
如く作用する。弾性ホルダー６が導電性を有するから、
紫外線検知管８の表面の静電気を該弾性ホルダー６を介
して基板５にアースすることができる。したがって、紫
外線検知管８の表面への静電気による埃の吸着を抑える
ことができる。そしてまた、弾性ホルダー６自体が導電
性を有するから、従来のように静電気防止剤をスプレー
する等の手間も要らない。且つ効果も長期間にわたって
持続する。Since the present invention has the above-mentioned structure, it operates as follows. Since the elastic holder 6 has conductivity,
The static electricity on the surface of the ultraviolet ray detection tube 8 can be grounded to the substrate 5 via the elastic holder 6. Therefore, it is possible to suppress the adsorption of dust on the surface of the ultraviolet detection tube 8 due to static electricity. Moreover, since the elastic holder 6 itself has conductivity, it does not require the trouble of spraying an antistatic agent as in the conventional case. And the effect lasts for a long time.
【００１５】また、紫外線検知管８のリード脚９、１０
へ、或いは該リード脚９、１０とプリント基板５に接続
する帯状導電体１１、１２へシリコン等によるコーティ
ングを施せば、シリコン等の表面には埃が付着しても内
部のリード脚等への埃の付着の影響はなく、紫外線検知
管８の電極間がリークする虞がない。したがって、紫外
線検知管８の感度を長期間にわたって安定化させること
ができる。The lead legs 9, 10 of the ultraviolet detector tube 8 are also provided.
Or by coating the strip-shaped conductors 11 and 12 connected to the lead legs 9 and 10 and the printed circuit board 5 with silicon or the like, even if dust adheres to the surface of silicon or the like, the internal lead legs or the like can be protected. There is no influence of dust adhesion, and there is no risk of leakage between the electrodes of the ultraviolet detection tube 8. Therefore, the sensitivity of the ultraviolet ray detector tube 8 can be stabilized for a long period of time.
【００１６】[0016]
【発明の実施の形態】以下、本発明の実施の形態につい
て図面を参照しつつ説明する。図１は、本発明の中央縦
断正面図、図２は要部の正面図、図３は要部の側面図で
ある。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a central longitudinal front view of the present invention, FIG. 2 is a front view of a main part, and FIG. 3 is a side view of the main part.
【００１７】図中、１はケースであり、円筒状の本体２
と、これに被着するカバー３とからなる。また、該カバ
ー３には中央部に後記紫外線検知管が覗く感知窓４を開
設している。In the figure, 1 is a case, which is a cylindrical main body 2
And a cover 3 attached thereto. Further, the cover 3 is provided with a sensing window 4 in the central portion through which an ultraviolet ray detecting tube described later can be seen.
【００１８】５は各種電子部品（図示せず）を実装し、
前記ケース１内に装備するプリント基板である。６は導
電性を持たせた弾性ホルダーであり、その上面には凹部
７を設けている。また、該弾性ホルダー６はプリント基
板５の上面の導電膜に接触させる等して電気的に接続し
ている。尚、弾性ホルダー６に導電性を持たせるには、
公知の適宜の手段によって行えばよい。また、該弾性ホ
ルダー６には、上縁に凹部７を挟んで少なくとも２個宛
所要の深さの切欠部６ａ、６ａを設けている。尚、該切
欠部６ａ、６ａの深さは紫外線検知管の電極板が見える
深さとする。5 is mounted with various electronic parts (not shown),
It is a printed circuit board mounted in the case 1. Reference numeral 6 denotes an elastic holder having conductivity, and a recess 7 is provided on the upper surface thereof. The elastic holder 6 is electrically connected to the conductive film on the upper surface of the printed circuit board 5 by contacting the conductive film. In order to make the elastic holder 6 conductive,
It may be performed by a known appropriate means. Further, the elastic holder 6 is provided with notches 6a, 6a having a required depth for at least two at the upper edge with the recess 7 interposed therebetween. The depths of the notches 6a, 6a are set such that the electrode plate of the ultraviolet ray detecting tube can be seen.
【００１９】８は前記導電性を持たせた弾性ホルダー６
の凹部７にセットした紫外線検知管である。また、９、
１０は該紫外線検知管８のリード脚であり、いずれもシ
リコンによるコーティングを施している。尚、樹脂のう
ちシリコンは絶縁性を有するだけでなく水の弾きもよ
く、本発明で用いるに好適である。Reference numeral 8 is an elastic holder 6 having the above-mentioned conductivity.
It is an ultraviolet ray detection tube set in the concave portion 7 of FIG. Also, 9,
Reference numeral 10 is a lead leg of the ultraviolet ray detecting tube 8 and each is coated with silicon. Incidentally, among the resins, silicon has not only an insulating property but also has a good repelling property against water, and is suitable for use in the present invention.
【００２０】次に、図４に示す本発明の他の実施例につ
いて説明する。本実施例は、紫外線検知管８のリード脚
９、１０を、柔軟性を有する帯状導電体１１、１２を介
してプリント基板５に接続したものであり、図示はしな
いがこれら紫外線検知管８のリード脚９、１０と帯状導
電体１２、１３とにシリコンによるコーティングを施す
ものである。尚、その他の構成は前記実施例と同様であ
るので詳細な説明は省略する。Next, another embodiment of the present invention shown in FIG. 4 will be described. In the present embodiment, the lead legs 9 and 10 of the ultraviolet ray detector tube 8 are connected to the printed circuit board 5 via flexible belt-shaped conductors 11 and 12, and although not shown, these ultraviolet ray detector tube 8 The lead legs 9 and 10 and the strip conductors 12 and 13 are coated with silicon. The other structure is the same as that of the above-mentioned embodiment, and detailed description thereof will be omitted.
【００２１】[0021]
【発明の効果】本発明は上記の如き構成、作用であるか
ら、従来の如く静電気防止剤をスプレーする等の手間を
要さず、長期間にわたって紫外線検知管の表面への静電
気による埃の吸着を抑えることができる。また、紫外線
検知管のリード脚、或いはリード脚と帯状又は線状導電
体へシリコン等によるコーティングを施せば、紫外線検
知管の感度の長期間の安定化を図ることができる。ま
た、紫外線検知管のリード脚を帯状又は線状導電体を介
してプリント基板に接続するようにした場合には、リー
ド脚をプリント基板に接続するときに起こりがちなリー
ド脚のつけ根のガラスの割れを防止することができる。
また、弾性ホルダーの上縁に切欠部を設ければ、紫外線
検知管の電極板が正しい角度に保持されているか否かを
容易に確認することができる。EFFECTS OF THE INVENTION Since the present invention has the above-described structure and operation, it does not require the trouble of spraying an antistatic agent as in the prior art, and attracts dust due to static electricity to the surface of the ultraviolet detector tube for a long period of time. Can be suppressed. Further, by coating the lead leg of the ultraviolet ray detector tube or the lead leg and the strip-shaped or linear conductor with silicon or the like, the sensitivity of the ultraviolet ray detector tube can be stabilized for a long period of time. Also, when the lead leg of the UV detector tube is connected to the printed circuit board via a strip-shaped or linear conductor, the glass of the base of the lead leg that tends to occur when connecting the lead leg to the printed circuit board It is possible to prevent cracking.
Further, if the notch is provided on the upper edge of the elastic holder, it can be easily confirmed whether or not the electrode plate of the ultraviolet ray detecting tube is held at the correct angle.
【図１】本発明の中央縦断正面図である。FIG. 1 is a central vertical front view of the present invention.
【図２】本発明の要部の正面図である。FIG. 2 is a front view of a main part of the present invention.
【図３】本発明の要部の側面図である。FIG. 3 is a side view of an essential part of the present invention.
【図４】本発明の他の実施例の分解斜視図である。FIG. 4 is an exploded perspective view of another embodiment of the present invention.
【図５】従来の炎感知器における紫外線検知管部分の側
面図である。FIG. 5 is a side view of an ultraviolet ray detection tube portion in a conventional flame detector.
【図６】従来の炎感知器における紫外線検知管部分の埃
の吸着状態の説明図である。FIG. 6 is an explanatory diagram of a dust adsorption state of an ultraviolet ray detection tube portion in a conventional flame detector.
１ ケース ２ 本体 ３ カバー ４ 感知窓 ５ プリント基板 ６ 導電性を持たせた弾性ホルダー ６ａ 切欠部 ７ 凹部 ８ 紫外線検知管 ９、１０ リード脚 １１、１２ 柔軟性を有する帯状導電体 1 Case 2 Main Body 3 Cover 4 Sensing Window 5 Printed Circuit Board 6 Conductive Elastic Holder 6a Cutout 7 Recess 8 UV Detector Tube 9, 10 Lead Legs 11, 12 Flexible Belt-shaped Conductor
Claims (5)
く感知窓を開設した、前記本体に被着するカバーとをも
ってケースを構成し、該ケース内に電子部品を実装した
プリント基板を装備すると共に該プリント基板に弾性ホ
ルダーをもって紫外線検知管を保持せしめた炎感知器に
おいて、前記弾性ホルダーに導電性を持たせると共に該
弾性ホルダーをプリント基板に電気的に接続したことを
特徴とする炎感知器。1. A case is composed of a cylindrical main body and a cover attached to the main body in which a detection window through which an ultraviolet ray detection tube described later is opened is formed, and a printed circuit board having electronic components mounted therein is provided. In addition, in a flame detector in which the printed circuit board has an elastic holder to hold an ultraviolet ray detection tube, the elastic holder has conductivity and the elastic holder is electrically connected to the printed circuit board. vessel.
ーティングを施してなる請求項１記載の炎感知器。2. The flame detector according to claim 1, wherein the lead leg of the ultraviolet detector tube is coated with resin.
る帯状又は線状導電体を介してプリント基板に接続する
と共に紫外線検知管のリード脚と該帯状又は線状導電体
に樹脂によるコーティングを施してなる請求項１記載の
炎感知器。3. The lead leg of the ultraviolet detector tube is connected to the printed circuit board through a flexible strip-shaped or linear conductor, and the lead leg of the ultraviolet detector tube and the strip-shaped or linear conductor are coated with a resin. The flame detector according to claim 1, which is provided.
３記載の炎感知器。4. The flame sensor according to claim 1, 2 or 3, wherein the resin is silicone.
セット用凹部を挟んで少なくとも２個宛所要の深さの切
欠部を設けてなる請求項１、２、３又は４記載の炎感知
器。5. The flame detection according to claim 1, 2, 3 or 4, wherein at least two notches having a required depth are provided on the upper edge of the elastic holder with a concave portion for setting the ultraviolet ray detecting tube interposed therebetween. vessel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19807895A JP3263895B2 (en) | 1995-07-11 | 1995-07-11 | Flame detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19807895A JP3263895B2 (en) | 1995-07-11 | 1995-07-11 | Flame detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0926355A true JPH0926355A (en) | 1997-01-28 |
| JP3263895B2 JP3263895B2 (en) | 2002-03-11 |
Family
ID=16385157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19807895A Expired - Fee Related JP3263895B2 (en) | 1995-07-11 | 1995-07-11 | Flame detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3263895B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006211350A (en) * | 2005-01-28 | 2006-08-10 | Kyocera Corp | Electronic apparatus |
| CN100407440C (en) * | 2003-07-18 | 2008-07-30 | 日本电气株式会社 | Switching element, method of driving switching element, rewritable logic integrated circuit, and storage element |
-
1995
- 1995-07-11 JP JP19807895A patent/JP3263895B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100407440C (en) * | 2003-07-18 | 2008-07-30 | 日本电气株式会社 | Switching element, method of driving switching element, rewritable logic integrated circuit, and storage element |
| JP2006211350A (en) * | 2005-01-28 | 2006-08-10 | Kyocera Corp | Electronic apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3263895B2 (en) | 2002-03-11 |
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