JPH0643938Y2 - Explosion-proof lighting system - Google Patents
Explosion-proof lighting systemInfo
- Publication number
- JPH0643938Y2 JPH0643938Y2 JP3629789U JP3629789U JPH0643938Y2 JP H0643938 Y2 JPH0643938 Y2 JP H0643938Y2 JP 3629789 U JP3629789 U JP 3629789U JP 3629789 U JP3629789 U JP 3629789U JP H0643938 Y2 JPH0643938 Y2 JP H0643938Y2
- Authority
- JP
- Japan
- Prior art keywords
- explosion
- proof
- proof lighting
- lighting device
- lighting fixture
- 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
Landscapes
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は化学工場あるいはガス工場等で使用する防爆形
照明装置の改良に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to improvement of an explosion-proof lighting device used in a chemical factory, a gas factory or the like.
従来、化学工場あるいはガス工場等で使用する防爆形照
明装置は、例えば第６図に示すように、外表面に等間隔
で複数の縦長のリブ２を構成し、機械的強度の増大を図
り、さらに同防爆形照明器具本体１の開口部に、ガラス
グローブ３を支持してなる枠体４をボルト５で、例えば
４個所程度で固定して構成してある。Conventionally, an explosion-proof lighting device used in a chemical factory, a gas factory, or the like has a plurality of vertically long ribs 2 formed at equal intervals on the outer surface to increase mechanical strength, as shown in FIG. 6, for example. Further, a frame body 4 supporting the glass globe 3 is fixed to the opening of the explosion-proof lighting fixture body 1 with bolts 5 at, for example, about four places.
また防爆形照明器具本体の内部に、例えば400ワット程
度の高圧水銀ランプを装着して構成してある。In addition, a high-pressure mercury lamp of, for example, about 400 watts is mounted inside the explosion-proof luminaire body.
ところで防爆形照明器具本体は、一般に爆発に対する強
度を保持するため、鋳物を用いて構成してある。しかし
防爆形照明器具本体を鋳物で構成すると、製造に手数を
要し量産性に乏しく、また重量も大きくなり運搬や設置
作業が大変となる欠点がある。By the way, the explosion-proof luminaire main body is generally made of cast metal in order to maintain strength against explosion. However, if the explosion-proof luminaire main body is made of cast metal, it has the drawbacks that it takes time to manufacture, mass productivity is poor, and that it becomes heavy and the transportation and installation work becomes difficult.
そこで近年は防爆形照明器具本体を鋳物に変え、重量が
小さく、量産性に優れているアルミダイカストを用いる
ことも一部実施される。Therefore, in recent years, it has been partially implemented to replace the explosion-proof luminaire main body with a casting and use an aluminum die casting which is small in weight and excellent in mass productivity.
しかし防爆形照明器具本体をアルミダイカストで構成
し、防爆性能確認のために、電気機械器具防爆構造規格
に基づいて、爆発試験をおこなうと、防爆形照明器具本
体と枠体のボルトの締付部近傍に衝撃荷重がかかり、同
部に亀裂が入り、また破損しやすい。例えばアルミダイ
カストで防爆形照明器具本体と、枠体を構成すると、両
者を固定しているボルトの近接部に爆発時に集中荷重が
かかり、１本のボルトに係る荷重を分散するためにボル
トの本数を増やさなければならない欠点がある。However, if the explosion-proof luminaire body is made of aluminum die-casting and an explosion test is performed based on the explosion-proof structural standards for electrical machinery and equipment to confirm the explosion-proof performance, the explosion-proof luminaire body and the bolts of the frame are tightened. Impact load is applied to the vicinity, and the same part is cracked and easily damaged. For example, if the explosion-proof lighting fixture body and frame are made of aluminum die-cast, concentrated load is applied to the proximity of the bolts that fix them when an explosion occurs, and the number of bolts is used to disperse the load related to one bolt. There is a drawback that must be increased.
本考案は上記の諸点に鑑み考案したものであって、防爆
形照明器具本体を軽量材で構成し、量産性に優れ、また
防爆形照明器具本体の集中荷重のかかる個所の機械的強
度を増し、防爆形照明器具本体全体は薄手に構成して
も、化学工場やガス工場で安全に使用することができる
防爆形照明装置を提供することを目的とする。The present invention has been made in view of the above points, and the explosion-proof lighting fixture main body is made of a lightweight material, is excellent in mass productivity, and increases the mechanical strength of the explosion-proof lighting fixture main body where a concentrated load is applied. An object of the present invention is to provide an explosion-proof lighting device that can be safely used in a chemical plant or a gas plant even if the entire explosion-proof lighting fixture body is thin.
本考案は上記の課題を解決するために次の構成とする。
すなわち 内部に光源を装着してなる防爆形照明器具本体の開口部
に、透孔性のグローブを支持してなる枠体をボルトで支
持する。The present invention has the following configuration to solve the above problems.
That is, the frame body supporting the through-hole globe is supported by bolts in the opening of the explosion-proof lighting fixture body in which the light source is mounted.
また同防爆形照明器具本体の外表面に等間隔で多数の縦
長のリブを構成すると共に同防爆形照明器具本体を軽量
材で構成する。Further, a large number of vertically long ribs are formed at equal intervals on the outer surface of the explosion-proof lighting fixture body, and the explosion-proof lighting fixture body is made of a lightweight material.
さらに防爆形照明器具本体のボルトの支持部に連続して
構成されたリブの肉厚を、他のリブの肉厚より厚く構成
し、集中荷重のかかる個所の機械的強度を増大して構成
してある。Furthermore, the wall thickness of the rib that is continuous with the bolt support part of the explosion-proof lighting fixture body is made thicker than the thickness of other ribs to increase the mechanical strength at the point where concentrated load is applied. There is.
上記した構造の防爆形照明装置によると、防爆形照明器
具本体を軽量材、例えばアルミダイカストで構成したの
で、重量が軽く、また防爆形照明器具本体のボルトの支
持部に連続して構成されたリブの肉厚を、他のリブの肉
厚より厚く構成したので、爆発時に防爆形照明器具本体
の枠体のボルトの支持部近傍の機械的強度が増し、同部
に亀裂が入り、また破損することがなく、防爆形照明器
具本体全体は薄手に構成しても、化学工場やガス工場で
使用することができる。According to the explosion-proof lighting device having the structure described above, since the explosion-proof lighting device main body is made of a lightweight material, for example, aluminum die casting, the weight is light, and the explosion-proof lighting device main body is continuously formed on the bolt supporting portion of the explosion-proof lighting device main body. Since the ribs are made thicker than the other ribs, the mechanical strength near the bolt support part of the frame of the explosion-proof lighting fixture body increases at the time of an explosion, and the same part is cracked and damaged. Even if the entire explosion-proof luminaire main body is thin, it can be used in a chemical factory or a gas factory.
以下本考案を第１図乃至第５図について説明する。図に
おいて、11は軽量材、例えばアルミダイカストで構成し
た防爆形照明器具本体、同防爆形照明器具本体11は例え
ば回転放物面形に構成してある。The present invention will be described below with reference to FIGS. In the figure, 11 is a lightweight material, for example, an explosion-proof lighting fixture body made of aluminum die casting, and the explosion-proof lighting fixture body 11 is, for example, a paraboloid of revolution.
また枠体とのボルトによる支持部の近傍の防爆形照明器
具本体の肉厚を、他の部分より厚く構成する。例えば、
アルミダイカストで構成してなる防爆形照明器具本体１
の高さ15cm、開口部の直径22cm、全体の肉厚0.3cm、ボ
ルトによる支持部の近傍のリブの肉厚Tb−Tb′の厚さ0.
8cm、リブTa−Ta′の厚さ0.3cm、リブの基部の高さ1.2c
m程度に構成する。Further, the wall thickness of the explosion-proof type lighting fixture main body in the vicinity of the support portion by the frame and the bolt is made thicker than other portions. For example,
Explosion-proof lighting fixture body 1 made of aluminum die casting
Height 15 cm, opening diameter 22 cm, overall wall thickness 0.3 cm, rib wall thickness Tb-Tb 'near the supporting portion by bolts 0.
8 cm, rib Ta-Ta 'thickness 0.3 cm, rib base height 1.2 c
Configure to about m.
防爆形照明器具本体11を例えば、アルミダイカストで構
成で構成すると、400ワット程度の高圧水銀ランプを装
着する場合、防爆形照明器具本体11は2.7kgとなる。こ
れが従来の鋳物で構成すると、同ランプ装着する場合、
4kgとなる。If the explosion-proof luminaire body 11 is made of, for example, aluminum die-cast, the explosion-proof luminaire body 11 weighs 2.7 kg when a high-pressure mercury lamp of about 400 watts is mounted. If this is composed of a conventional casting, when installing the same lamp,
It will be 4 kg.
12は防爆形照明器具本体11の開口部に、支持してなる枠
体、13は枠体12に掛合支持してなる透光性のガラスグロ
ーブ、14は防爆形照明器具本体11の開口部に枠体12を固
定するためのボルト、15は防爆形照明器具本体11の内部
に固定してなるソケット、16はソケット15に装着してな
る光源であって、例えば400ワットの高圧水銀ランプを
もちいてある。12 is an opening of the explosion-proof luminaire main body 11, a frame body supported, 13 is a translucent glass glove supported by engaging the frame body 12, 14 is an opening of the explosion-proof luminaire main body 11. Bolts for fixing the frame 12, 15 is a socket fixed inside the explosion-proof lighting fixture main body 11, 16 is a light source attached to the socket 15, for example, a 400 watt high pressure mercury lamp is used. There is.
本考案の防爆形照明器具本体と枠体をボルト３本で固定
すると、13kg/cm2までの爆発圧力に耐え、電気機械器具
防爆構造規格の爆発試験の要件を満たす。これが第６図
に示す従来の構造によると、ボルト３本であると、8kg/
cm2までの爆発圧で爆発する。従来の構造で13kg/cm2ま
での爆発圧力に耐える構造とするにはボルトを５本に増
やす必要があり構造が複雑となる。When the explosion-proof lighting device body and frame of the present invention are fixed with three bolts, they can withstand an explosion pressure of up to 13 kg / cm 2 and meet the requirements of the explosion test of the electrical machinery and appliances explosion-proof structure standard. According to the conventional structure shown in FIG. 6, it is 8 kg /
Explodes with an explosion pressure of up to cm 2 . In order to withstand the explosion pressure of up to 13 kg / cm 2 with the conventional structure, it is necessary to increase the number of bolts to 5, which complicates the structure.
本考案は上記したように、防爆形照明器具本体を軽量材
で構成し、また防爆形照明器具本体のボルト支持部に連
続して構成されたリブの肉厚を、他のリブの肉厚より厚
く構成したので、重量は小さく、量産性に優れ、また防
爆形照明器具本体のボルト支持部近傍の機械的強度が増
し、防爆形照明器具本体全体は薄手に構成しても、爆発
時に、同部に亀裂が入り、また破損することがなく、化
学工場やガス工場で安全に使用することができる利点が
ある。According to the present invention, as described above, the main body of the explosion-proof luminaire is made of a lightweight material, and the thickness of the rib continuously formed on the bolt support portion of the main body of the explosion-proof luminaire is smaller than that of other ribs. Because it is thick, it is light in weight and excellent in mass productivity.In addition, the mechanical strength near the bolt support part of the explosion-proof luminaire main body increases, and even if the entire explosion-proof luminaire main body is thin, the same It has the advantage that it can be used safely in chemical plants and gas plants without cracking or damage to parts.
第１図は本考案に係る防爆形照明器具の一部切欠き側面
図、第２図は第１図の平面図、第３図は第１図の要部拡
大図、第４図及び第５図はリブの大きさを示す一部拡大
図、第６図は従来の防爆形照明器具の一部切欠き側面図
である。 11……防爆形照明器具本体 12……枠体 13……ガラスグローブ 14……ボルト 15……ソケット 16……光源FIG. 1 is a partially cutaway side view of an explosion-proof lighting device according to the present invention, FIG. 2 is a plan view of FIG. 1, FIG. 3 is an enlarged view of a main part of FIG. 1, FIG. 4 and FIG. FIG. 6 is a partially enlarged view showing the size of the rib, and FIG. 6 is a partially cutaway side view of a conventional explosion-proof lighting fixture. 11 …… Explosion-proof luminaire body 12 …… Frame 13 …… Glass globe 14 …… Bolt 15 …… Socket 16 …… Light source
Claims (1)
数の縦長のリブを有する防爆形照明器具本体の開口部
に、透孔性のグローブを支持してなる枠体をボルトで固
定してなる防爆形照明装置において、 前記、防爆形照明器具本体を軽量材で構成し、また防爆
形照明器具本体のボルトの支持部に連続して構成された
リブの肉厚を、他のリブの肉厚より厚く構成したことを
特徴とする防爆形照明装置。1. A frame body, in which a light source is mounted inside, and a perforated globe is supported at the opening of a body of an explosion-proof lighting fixture having a plurality of vertically elongated ribs at equal intervals on the outer surface by bolts. In the explosion-proof lighting device fixed, the explosion-proof lighting device body is made of a lightweight material, and the wall thickness of the rib continuously formed on the support portion of the bolt of the explosion-proof lighting device body is An explosion-proof lighting device characterized in that it is made thicker than the rib thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3629789U JPH0643938Y2 (en) | 1989-03-31 | 1989-03-31 | Explosion-proof lighting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3629789U JPH0643938Y2 (en) | 1989-03-31 | 1989-03-31 | Explosion-proof lighting system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02129610U JPH02129610U (en) | 1990-10-25 |
| JPH0643938Y2 true JPH0643938Y2 (en) | 1994-11-14 |
Family
ID=31542405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3629789U Expired - Lifetime JPH0643938Y2 (en) | 1989-03-31 | 1989-03-31 | Explosion-proof lighting system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0643938Y2 (en) |
-
1989
- 1989-03-31 JP JP3629789U patent/JPH0643938Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02129610U (en) | 1990-10-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |