JP6834203B2 - Explosion-proof lighting equipment - Google Patents

Explosion-proof lighting equipment Download PDF

Info

Publication number
JP6834203B2
JP6834203B2 JP2016136895A JP2016136895A JP6834203B2 JP 6834203 B2 JP6834203 B2 JP 6834203B2 JP 2016136895 A JP2016136895 A JP 2016136895A JP 2016136895 A JP2016136895 A JP 2016136895A JP 6834203 B2 JP6834203 B2 JP 6834203B2
Authority
JP
Japan
Prior art keywords
power supply
accommodating recess
light source
cover
recess
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.)
Active
Application number
JP2016136895A
Other languages
Japanese (ja)
Other versions
JP2018010729A (en
Inventor
幸久 武田
幸久 武田
康彦 渋谷
康彦 渋谷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Iwasaki Denki KK
Original Assignee
Iwasaki Denki KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Iwasaki Denki KK filed Critical Iwasaki Denki KK
Priority to JP2016136895A priority Critical patent/JP6834203B2/en
Publication of JP2018010729A publication Critical patent/JP2018010729A/en
Application granted granted Critical
Publication of JP6834203B2 publication Critical patent/JP6834203B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Description

本発明は、耐圧防爆照明器具に関する。 The present invention relates to an explosion-proof luminaire.

従来、ＬＥＤを光源に備え、かつ防爆構造を有した防爆照明器具が知られている（例えば、特許文献１参照）。また直管形蛍光灯の代替として、直管形ＬＥＤを光源とした防爆照明器具も知られている（例えば、特許文献２参照）。 Conventionally, an explosion-proof luminaire having an LED as a light source and having an explosion-proof structure is known (see, for example, Patent Document 1). Further, as an alternative to the straight tube fluorescent lamp, an explosion-proof lighting fixture using a straight tube LED as a light source is also known (see, for example, Patent Document 2).

ところで、特許文献１にも記載されているように、防爆構造には、耐圧防爆構造と安全増防爆構造との２つがある。
耐圧防爆構造は、照明器具の容器に浸入した爆発性雰囲気が内部で爆発した場合でも損傷を受けることなく耐え、かつ容器の全ての接合部又は構造上の開口部を通じて、外部の爆発性雰囲気に点火するのを防止できる構造である。
安全増防爆構造は、通常の使用中には、アーク又は火花が発生することがない照明器具に適用される構造であり、異常なアーク及び火花の発生、並びに過度な温度上昇の可能性に対して安全性を増すための手段が講じられた構造である。 By the way, as described in Patent Document 1, there are two explosion-proof structures, a pressure-resistant explosion-proof structure and a safety-enhanced explosion-proof structure.
The flameproof structure withstands the explosive atmosphere that has entered the container of the lighting fixture without being damaged even if it explodes inside, and through all the joints or structural openings of the container, it creates an external explosive atmosphere. It is a structure that can prevent ignition.
The safety-enhanced explosion-proof structure is a structure applied to luminaires that do not generate arcs or sparks during normal use, and is resistant to abnormal arcs and sparks, and the possibility of excessive temperature rise. It is a structure in which measures have been taken to increase safety.

特開２０１０−４４８７２号公報JP-A-2010-44872

意匠登録第１４０９０７８号公報Design Registration No. 1409078

耐圧防爆構造は、容器に対する堅牢性が要求されるため、照明器具の形状が大きくなるとともに重量も増え、コストが高くなる。これに対して、安全増防爆構造は、容器の強さに対する要求事項が耐圧防爆構造ほど厳しくないので、容器の小型軽量化を図ることができ、結果として照明器具の小型軽量化や低コストを実現できる。
このように、ＬＥＤを光源に備え、なおかつ防爆構造を有した防爆照明器具において、防爆構造として耐圧防爆構造を有した耐圧防爆照明器具は、小型軽量化が困難であった。 Since the flameproof structure is required to be robust to the container, the shape of the luminaire increases, the weight increases, and the cost increases. On the other hand, in the safety-enhanced explosion-proof structure, the requirements for the strength of the container are not as strict as the pressure-resistant explosion-proof structure, so that the container can be made smaller and lighter. realizable.
As described above, in the explosion-proof luminaire having the LED as the light source and having the explosion-proof structure, it is difficult to reduce the size and weight of the explosion-proof luminaire having the explosion-proof structure as the explosion-proof structure.

特に、直管形蛍光灯の代替となる直管形ＬＥＤを光源とした耐圧防爆照明器具においては、容器が一方向に長いことから容器内容積も大きく、小型軽量化が更に困難になる。また、容器内容積が大きいほど、爆発性雰囲気が内部で爆発したときの爆発力も増大するので、容器の耐圧を更に高める必要があり、小型軽量化の困難性が高くなる。 In particular, in a pressure-resistant explosion-proof luminaire using a straight-tube LED as a light source instead of a straight-tube fluorescent lamp, since the container is long in one direction, the internal volume of the container is large, and it becomes more difficult to reduce the size and weight. Further, as the internal volume of the container is large, the explosive force when the explosive atmosphere explodes inside also increases, so that it is necessary to further increase the pressure resistance of the container, and it becomes difficult to reduce the size and weight.

本発明は、一方向に長い形状でありながらも、小型軽量化が可能な耐圧防爆照明器具を提供することを目的とする。 An object of the present invention is to provide an explosion-proof luminaire that can be made smaller and lighter while having a long shape in one direction.

本発明は、発光素子を列状に配列した矩形板状の発光素子基板と、一方向に延び、前記発光素子基板を収めた器具本体と、を備えた耐圧防爆照明器具において、前記器具本体は、前記発光素子基板を収める凹部である光源収容凹部と、前記光源収容凹部を閉塞する透光性の平板状のカバーと、前記発光素子基板に電力を供給する電源回路を収めた電源ボックスと、を備え、前記電源ボックスは、略直方体形状を成し、前記電源ボックスを収める電源収容凹部が前記光源収容凹部の底面に設けられ、前記電源収容凹部は、前記器具本体が延びる方向に垂直な断面内の形状が略矩形であり、当該矩形の寸法が、前記電源ボックスの断面寸法と略等しく成されていることを特徴とする。 The present invention is a pressure-resistant explosion-proof lighting fixture comprising a rectangular plate-shaped light-emitting element substrate in which light-emitting elements are arranged in a row and an instrument body extending in one direction and accommodating the light-emitting element substrate. A light source accommodating recess which is a recess for accommodating the light emitting element substrate, a transparent flat plate-shaped cover for closing the light source accommodating recess, and a power supply box containing a power supply circuit for supplying power to the light emitting element substrate . The power supply box has a substantially rectangular shape, and a power supply accommodating recess for accommodating the power supply box is provided on the bottom surface of the light source accommodating recess, and the power accommodating recess has a cross section perpendicular to the direction in which the instrument body extends. The inside shape is substantially rectangular, and the dimensions of the rectangle are substantially equal to the cross-sectional dimensions of the power supply box.

本発明は、上記耐圧防爆照明器具において、前記電源ボックスは、前記器具本体が延びる方向に垂直な断面における角部の角を欠いた形状に成さている、ことを特徴とする。 The present invention is characterized in that, in the flameproof lighting fixture, the power supply box has a shape lacking corners in a cross section perpendicular to the direction in which the fixture body extends.

本発明によれば、小型軽量化が可能な耐圧防爆照明器具が得られる。 According to the present invention, an explosion-proof luminaire that can be made smaller and lighter can be obtained.

本発明の実施形態に係る耐圧防爆照明器具の設置状態を示す図である。It is a figure which shows the installation state of the pressure-resistant explosion-proof luminaire which concerns on embodiment of this invention. 耐圧防爆照明器具の構成を示す図であり、（Ａ）は正面図、（Ｂ）は平面図、（Ｃ）は底面図、（Ｄ）は左側面図である。It is a figure which shows the structure of the explosion-proof luminaire, (A) is a front view, (B) is a plan view, (C) is a bottom view, (D) is a left side view. 耐圧防爆照明器具の分解斜視図である。It is an exploded perspective view of the explosion-proof luminaire. 図２のＩＶ−ＩＶ断面線における断面図である。It is sectional drawing in the IV-IV cross-sectional line of FIG. 器具本体をケーブルグランドとともに上方からみた斜視図である。It is a perspective view which looked at the instrument body together with a cable ground from above. 器具本体の底面図である。It is a bottom view of the instrument body. 図２（Ｂ）のＶＩＩ-ＶＩＩ線における断面図である。2 is a cross-sectional view taken along the line VII-VII of FIG. 2B. 図２（Ｂ）のＶＩＩＩ-ＶＩＩＩ線における断面図である。2 is a cross-sectional view taken along the line VIII-VIII of FIG. 2B. 本発明の変形例に係る耐圧防爆照明器具を上方からみた斜視図である。It is a perspective view which looked at the flameproof luminaire which concerns on the modification of this invention from above.

以下、図面を参照して本発明の実施形態について説明する。
図１は、本実施形態に係る耐圧防爆照明器具１の設置状態を示す図である。
耐圧防爆照明器具１は、図１に示すように、一方向Ｋに延びた略矩形状を成し、その両端部の各々が一対の固定具２Ａ、２Ｂに連結されている。これら固定具２Ａ、２Ｂは、天井面等の設置面に固定された部材であり、耐圧防爆照明器具１は、これら一対の固定具２Ａ、２Ｂに支持されることで、設置面から吊下がった状態で設置される。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a diagram showing an installation state of the flameproof lighting fixture 1 according to the present embodiment.
As shown in FIG. 1, the flameproof luminaire 1 has a substantially rectangular shape extending in one direction K, and both ends thereof are connected to a pair of fixtures 2A and 2B. These fixtures 2A and 2B are members fixed to an installation surface such as a ceiling surface, and the flameproof luminaire 1 is supported by the pair of fixtures 2A and 2B and hung from the installation surface. Installed in a state.

固定具２Ａは、設置面に固定される端子箱４を有し、この端子箱４に、耐圧防爆照明器具１が結合されて支持される。設置面には、電力を伝送する電線ケーブルが敷設されており、この電線ケーブルが端子箱４の中で結線される。
耐圧防爆照明器具１は、図１に示すように、端子箱４に結合されるケーブルグランド６を備え、耐圧防爆照明器具１から延びる電線ケーブルは、ケーブルグランド６の中を通して端子箱４に引き込まれる。このケーブルグランド６には耐圧防爆形のものが用いられている。 The fixture 2A has a terminal box 4 fixed to the installation surface, and the pressure-resistant explosion-proof luminaire 1 is coupled to and supported by the terminal box 4. An electric wire cable for transmitting electric power is laid on the installation surface, and the electric wire cable is connected in the terminal box 4.
As shown in FIG. 1, the flameproof luminaire 1 includes a cable gland 6 coupled to the terminal box 4, and the electric wire cable extending from the flameproof luminaire 1 is drawn into the terminal box 4 through the cable gland 6. .. A pressure-resistant explosion-proof type cable gland 6 is used.

耐圧防爆照明器具１の底面１Ａには、透光性の平板状のカバー８と、物体の衝突等からカバー８を保護するガード９とが設けられている。なお以下では、耐圧防爆照明器具１の構成について、ガード９を外した状態を説明する。 The bottom surface 1A of the flameproof luminaire 1 is provided with a translucent flat plate-shaped cover 8 and a guard 9 that protects the cover 8 from collisions with objects and the like. In the following, the configuration of the flameproof lighting fixture 1 will be described with the guard 9 removed.

図２は、耐圧防爆照明器具１の構成を示す図であり、図２（Ａ）は正面図、図２（Ｂ）は平面図、図２（Ｃ）は底面図、図２（Ｄ）は左側面図である。図３は、耐圧防爆照明器具１の分解斜視図である。また図４は図２のＩＶ−ＩＶ線における断面図である。
耐圧防爆照明器具１は、器具本体１０と、上述のケーブルグランド６、及びカバー８と、カバー８を器具本体１０に押さ付けるカバー枠１２と、を備えている。 2A and 2B are views showing the configuration of the flameproof luminaire 1, FIG. 2A is a front view, FIG. 2B is a plan view, FIG. 2C is a bottom view, and FIG. 2D is a bottom view. It is a left side view. FIG. 3 is an exploded perspective view of the flameproof lighting fixture 1. Further, FIG. 4 is a cross-sectional view taken along the line IV-IV of FIG.
The flameproof lighting fixture 1 includes a fixture main body 10, the above-mentioned cable gland 6, a cover 8, and a cover frame 12 that presses the cover 8 against the fixture main body 10.

図５は器具本体１０をケーブルグランド６とともに上方からみた斜視図、図６は器具本体１０の底面図である。
器具本体１０は、図２（Ｂ）に示すように、平面視において幅Ｗが９７ｍｍ、長さＬが８５０ｍｍの矩形状に形成されている。
器具本体１０の長さＬは、直管形蛍光灯を光源とした耐圧防爆照明器具に合せて既に設置されている固定具２Ａ、２Ｂに取り付けられる長さである。具体的には、固定具２Ａ、２Ｂは、直管形蛍光灯を光源に備える耐圧防爆照明器具の全長に合せて、約８００ｍｍの距離で離間している。このため、器具本体１０の長さＬは、固定具２Ａ、２Ｂの離間距離よりも大きな８５０ｍｍに成され、また、この器具本体１０の上面１０Ｂに、図２（Ｂ）に示すように、約８００ｍｍの距離Ｌｂで離間した位置に、ケーブルグランド６、及び固定具２Ｂへの連結部１５が設けられている。なお、このケーブルグランド６、及び固定具２Ｂの間の距離Ｌｂは、あくまでも一例であり、設置対称の固定具２Ａ、２Ｂの離間距離に応じて変えてもよい。例えば距離Ｌｂは５００ｍｍや３００ｍｍでもよい。 FIG. 5 is a perspective view of the instrument body 10 as viewed from above together with the cable gland 6, and FIG. 6 is a bottom view of the instrument body 10.
As shown in FIG. 2B, the instrument main body 10 is formed in a rectangular shape having a width W of 97 mm and a length L of 850 mm in a plan view.
The length L of the fixture body 10 is a length that can be attached to fixtures 2A and 2B that have already been installed in accordance with the flameproof lighting fixture that uses a straight tube fluorescent lamp as a light source. Specifically, the fixtures 2A and 2B are separated by a distance of about 800 mm according to the total length of the flameproof luminaire equipped with a straight tube fluorescent lamp as a light source. Therefore, the length L of the instrument body 10 is set to 850 mm, which is larger than the separation distance between the fixtures 2A and 2B, and the upper surface 10B of the instrument body 10 is about, as shown in FIG. 2 (B). A cable gland 6 and a connecting portion 15 to the fixture 2B are provided at positions separated by a distance Lb of 800 mm. The distance Lb between the cable ground 6 and the fixture 2B is merely an example, and may be changed according to the separation distance between the fixtures 2A and 2B that are symmetrical to be installed. For example, the distance Lb may be 500 mm or 300 mm.

器具本体１０の底面１０Ａには、図３に示すように、収容凹部２０が形成されており、この収容凹部２０に、複数（図示例では３つ）のＬＥＤ基板１６と、電源ボックス１８とが収められている。 As shown in FIG. 3, a housing recess 20 is formed on the bottom surface 10A of the instrument body 10, and a plurality of (three in the illustrated example) LED substrates 16 and a power supply box 18 are formed in the housing recess 20. It is contained.

ＬＥＤ基板１６は、幅Ｗｃが３０ｍｍ、長さＬｃが２４３ｍｍの矩形板状の実装基板１９と、列状に配列された多数のＬＥＤ素子２１と、を備えている。
ＬＥＤ素子２１には、ＳＭＤ（Surface Mount Device）型のＬＥＤチップが用いられている。このＬＥＤ素子２１は、ＬＥＤの放射光と、この放射光による蛍光との混合によって得られる白色光を放射するものであり、この蛍光を得るための蛍光体がチップ表面に設けられている。そして、このＬＥＤ素子２１がＬＥＤ基板１６に列状に配列されることで、ＬＥＤ基板１６からは線状に着色光が放射される。 The LED substrate 16 includes a rectangular plate-shaped mounting substrate 19 having a width Wc of 30 mm and a length Lc of 243 mm, and a large number of LED elements 21 arranged in a row.
An SMD (Surface Mount Device) type LED chip is used for the LED element 21. The LED element 21 emits white light obtained by mixing the synchrotron radiation of the LED and the fluorescence generated by the synchrotron radiation, and a phosphor for obtaining the fluorescence is provided on the chip surface. Then, by arranging the LED elements 21 in a row on the LED substrate 16, colored light is linearly emitted from the LED substrate 16.

耐圧防爆照明器具１では、直管形蛍光灯を光源とした上述の耐圧防爆照明器具の代替を可能にするために、直管形蛍光灯の全長に相当する個数のＬＥＤ基板１６が長手方向に連結されている。また、これらのＬＥＤ基板１６によって、少なくとも直管形蛍光灯の光出力以上の光出力が得られるように、ＬＥＤ素子２１の出力、及びＬＥＤ素子２１の個数が設計されている。 In the pressure-resistant explosion-proof luminaire 1, in order to enable an alternative to the above-mentioned pressure-resistant explosion-proof luminaire using a straight-tube fluorescent lamp as a light source, a number of LED substrates 16 corresponding to the total length of the straight-tube fluorescent lamp are provided in the longitudinal direction. It is connected. Further, the output of the LED element 21 and the number of the LED elements 21 are designed so that at least the light output of the straight tube fluorescent lamp or more can be obtained by these LED substrates 16.

この設計においては、ＬＥＤ素子２１のジャンクション温度が所定温度Ｔ以下に抑えられている。この所定温度Ｔは、ジャンクション温度とＬＥＤ素子２１の発光効率との相関関係において所定値Ｑ以上の発光効率が得られる温度である。
この耐圧防爆照明器具１では、ＬＥＤ素子２１の個々の光出力を抑えることで、ジャンクション温度を下げ、所定値Ｑ以上の発光効率を維持している。ただし、この場合、ＬＥＤ素子２１は、発光効率が上がっても発光光束の絶対値は小さくなるため、ＬＥＤ素子２１の個数は、少なくとも上記直管形蛍光灯の光出力以上の光出力が確保できる数以上になっている。 In this design, the junction temperature of the LED element 21 is suppressed to a predetermined temperature T or less. The predetermined temperature T is a temperature at which a luminous efficiency of a predetermined value Q or more can be obtained in a correlation between the junction temperature and the luminous efficiency of the LED element 21.
In this flameproof luminaire 1, the junction temperature is lowered by suppressing the individual light output of the LED element 21, and the luminous efficiency of a predetermined value Q or more is maintained. However, in this case, since the absolute value of the luminous flux of the LED element 21 is small even if the luminous efficiency is increased, the number of the LED elements 21 can secure at least the light output of the straight tube type fluorescent lamp. It is more than a few.

図７は、図２（Ｂ）のＶＩＩ-ＶＩＩ線における断面図である。
同図に示すように、器具本体１０の底面１０Ａは平面状を成し、その底面１０Ａ内には、カバー８が嵌まる凹部である嵌合凹部２６が形成されている。嵌合凹部２６の深さＤａは、カバー８の厚みと略一致しており、嵌合凹部２６にカバー８が嵌まった状態においては、カバー８の表面８Ａと、器具本体１０の底面１０Ａとが同一面に位置する。
この状態において、カバー８がカバー枠１２によって器具本体１０に脱落不能に固定される。カバー枠１２は、器具本体１０の底面１０Ａに面接触する略矩形の板状の枠であり、このカバー枠１２によってカバー８の縁部８Ｄが器具本体１０に押さえ付けられて固定される。このとき、カバー８の全周の縁部８Ｄと嵌合凹部２６との間にはパッキン２９が設けられており、気密性、及び水密性が高められている。
また、器具本体１０の嵌合凹部２６とカバー８との接触面２７が防爆面となり、この接触面２７は所定の耐圧防爆性能に応じた幅Ｅに成されている。 FIG. 7 is a cross-sectional view taken along the line VII-VII of FIG. 2 (B).
As shown in the figure, the bottom surface 10A of the instrument body 10 is flat, and a fitting recess 26, which is a recess into which the cover 8 is fitted, is formed in the bottom surface 10A. The depth Da of the fitting recess 26 substantially coincides with the thickness of the cover 8, and when the cover 8 is fitted in the fitting recess 26, the surface 8A of the cover 8 and the bottom surface 10A of the instrument body 10 Are located on the same plane.
In this state, the cover 8 is fixed to the instrument body 10 by the cover frame 12 so as not to fall off. The cover frame 12 is a substantially rectangular plate-shaped frame that comes into surface contact with the bottom surface 10A of the instrument body 10, and the edge 8D of the cover 8 is pressed and fixed to the instrument body 10 by the cover frame 12. At this time, a packing 29 is provided between the edge 8D on the entire circumference of the cover 8 and the fitting recess 26 to improve airtightness and watertightness.
Further, the contact surface 27 between the fitting recess 26 of the instrument body 10 and the cover 8 serves as an explosion-proof surface, and the contact surface 27 has a width E corresponding to a predetermined pressure-resistant explosion-proof performance.

器具本体１０において、この嵌合凹部２６の中に上記収容凹部２０が形成されており、この収容凹部２０は、図４、及び図６に示すように、ＬＥＤ基板１６を収める凹部である光源収容凹部２２と、電源ボックス１８を収める凹部である電源収容凹部２４と、を含んでいる。 In the instrument main body 10, the accommodating recess 20 is formed in the fitting recess 26, and the accommodating recess 20 is a recess for accommodating the LED substrate 16 as shown in FIGS. 4 and 6. The recess 22 and the power storage recess 24, which is a recess for accommodating the power box 18, are included.

かかる器具本体１０は、アルミ合金等の高熱伝導性材を材料としたダイカスト成型によって形成されている。すなわち、器具本体１０の上面１０Ｂには、図５に示すように、収容凹部２０の光源収容凹部２２による第１膨出部６２と、電源収容凹部２４による第２膨出部６４とが形成されている。 The instrument body 10 is formed by die-casting using a high thermal conductive material such as an aluminum alloy as a material. That is, as shown in FIG. 5, the upper surface 10B of the instrument main body 10 is formed with a first bulging portion 62 formed by the light source accommodating recess 22 of the accommodating recess 20 and a second bulging portion 64 formed by the power accommodating recess 24. ing.

また器具本体１０の上面１０Ｂには、器具本体１０の長軸方向に延びた第１フィン７０と、長軸方向に垂直な方向に延びた多数の第２フィン７２とが設けられている。第１フィン７０は、図２（Ｂ）に示すように、器具本体１０の両端の間に亘って設けられており、第２フィン７２は、第１フィン７０に交差して設けられている。
これら第１フィン７０、及び第２フィン７２からは、収容凹部２０に収められたＬＥＤ基板１６、及び電源ボックス１８の熱が放熱される。 Further, the upper surface 10B of the instrument body 10 is provided with a first fin 70 extending in the major axis direction of the instrument body 10 and a large number of second fins 72 extending in a direction perpendicular to the major axis direction. As shown in FIG. 2B, the first fin 70 is provided between both ends of the instrument main body 10, and the second fin 72 is provided so as to intersect the first fin 70.
The heat of the LED substrate 16 and the power supply box 18 housed in the accommodating recess 20 is dissipated from the first fin 70 and the second fin 72.

さて、光源収容凹部２２は、図７に示すように、器具本体１０が延びる方向（以下、「長軸方向」という）に対して垂直な断面における形状が略矩状に凹んだ凹み部である。光源収容凹部２２の平面状の底面２２Ａには、ＬＥＤ基板１６がネジ３０（図３）によって固定され、ＬＥＤ基板１６に対面した開放部分が平板状のカバー８によって閉塞されている。 As shown in FIG. 7, the light source accommodating recess 22 is a recess having a substantially rectangular shape in a cross section perpendicular to the direction in which the instrument body 10 extends (hereinafter, referred to as the “major axis direction”). .. The LED substrate 16 is fixed to the flat bottom surface 22A of the light source accommodating recess 22 by a screw 30 (FIG. 3), and the open portion facing the LED substrate 16 is closed by a flat plate-shaped cover 8.

ここで、この耐圧防爆照明器具１では、直管形蛍光灯の代替の直管形ＬＥＤ光源を備えた従来の耐圧防爆型照明器具（以下、単に「従来器具」という）に比べ、この光源収容凹部２２の容積が小さく抑えられることで、爆発性雰囲気が内部で爆発したときの爆発力が抑えられている。 Here, the pressure-resistant explosion-proof luminaire 1 accommodates this light source as compared with a conventional pressure-resistant explosion-proof luminaire (hereinafter, simply referred to as "conventional equipment") provided with a straight-tube LED light source instead of a straight-tube fluorescent lamp. By keeping the volume of the recess 22 small, the explosive force when the explosive atmosphere explodes inside is suppressed.

詳述すると、器具本体１０には、光源収容凹部２２、及びカバー８によって、深さＤ、及び、幅Ｗｄの略矩形状の空間が形成されており、この空間に上記ＬＥＤ基板１６が収められている。
一般に従来器具の多くは、カバーの内面が外側に膨出するように湾曲した形状を成していることから、光源収容凹部２２、及びカバー８から成る空間は、この従来器具に比べ、カバー８の内面８Ａが平面である分、容積が抑えられる。 More specifically, in the instrument main body 10, a substantially rectangular space having a depth D and a width Wd is formed by the light source accommodating recess 22 and the cover 8, and the LED substrate 16 is housed in this space. ing.
In general, most of the conventional appliances have a curved shape so that the inner surface of the cover bulges outward. Therefore, the space formed by the light source accommodating recess 22 and the cover 8 is larger than that of the conventional appliance. Since the inner surface 8A of the above surface is flat, the volume can be suppressed.

ただし、この器具本体１０は、従来器具に比べ、ＬＥＤ基板１６とカバー８の内面８Ａとの間の距離が狭くなる。このため、ＬＥＤ基板１６、及びＬＥＤ素子２１においては、カバー８の裏面反射によって反射した反射光によってＬＥＤジャンクション温度が従来器具よりも上昇し易く、何ら対策を施さなければ、ＬＥＤ素子２１の発光効率が低下し、またＬＥＤ素子２１の寿命も短くなる。
そこで、この耐圧防爆照明器具１では、光源収容凹部２２の深さＤは、少なくともカバー８の裏面反射の反射光によってＬＥＤジャンクション温度が上昇しない大きさに成されている。 However, the distance between the LED substrate 16 and the inner surface 8A of the cover 8 of the fixture body 10 is narrower than that of the conventional fixture. Therefore, in the LED substrate 16 and the LED element 21, the LED junction temperature is likely to rise due to the reflected light reflected by the back surface reflection of the cover 8 as compared with the conventional fixture, and if no measures are taken, the luminous efficiency of the LED element 21 Is reduced, and the life of the LED element 21 is also shortened.
Therefore, in the flameproof lighting fixture 1, the depth D of the light source accommodating recess 22 is set to a size such that the LED junction temperature does not rise at least due to the reflected light reflected from the back surface of the cover 8.

一方、耐圧防爆照明器具１では、ＬＥＤ基板１６をネジ３０によって光源収容凹部２２の底面１０Ａに固定することで、振動や衝撃発生時におけるＬＥＤ基板１６の脱落を防止している。しかしながら、耐圧防爆照明器具１に振動や衝撃が発生した場合、カバー８の内面８Ａにも振動が生じる。特にカバー８は平板状であるため、振動時の振幅は、断面曲線形を描いた従来器具のカバーに比べて大きくなる。この場合、図４に示すように、ネジ３０の頭部３０Ａと、カバー８の内面８Ａの間の隙間δが小さすぎると、カバー８の振動時に、内面８Ａがネジ３０の頭部３０Ａに接触し、カバー８に傷や破損が生じるおそれがある。
そこで、この耐圧防爆照明器具１では、光源収容凹部２２の深さＤは、上記隙間δがカバー８の振動時の振幅分以上とする大きさにもなっている。 On the other hand, in the flameproof lighting fixture 1, the LED substrate 16 is fixed to the bottom surface 10A of the light source accommodating recess 22 by a screw 30 to prevent the LED substrate 16 from falling off when vibration or impact is generated. However, when the pressure-resistant explosion-proof luminaire 1 is vibrated or shocked, the inner surface 8A of the cover 8 is also vibrated. In particular, since the cover 8 has a flat plate shape, the amplitude at the time of vibration is larger than that of the cover of the conventional instrument having a curved cross section. In this case, as shown in FIG. 4, if the gap δ between the head 30A of the screw 30 and the inner surface 8A of the cover 8 is too small, the inner surface 8A comes into contact with the head 30A of the screw 30 when the cover 8 vibrates. However, the cover 8 may be scratched or damaged.
Therefore, in the flameproof lighting fixture 1, the depth D of the light source accommodating recess 22 is set so that the gap δ is equal to or more than the amplitude of the cover 8 during vibration.

このように、光源収容凹部２２の深さＤが、カバー８の裏面反射の反射光によってＬＥＤジャンクション温度が上昇しない大きさであり、かつ、ＬＥＤ基板１６を固定するネジ３０の頭部３０Ａとカバー８の内面８Ａの間の隙間δをカバー８の振動時の振幅分以上とする大きさに成されることで、発光効率、及び寿命の低下を抑え、かつ、振動時の損傷が防止される。
また光源収容凹部２２の深さＤの大きさを、カバー８の裏面反射の反射光によってＬＥＤジャンクション温度が上昇しない大きさの最小値Ｄ１、及び、ＬＥＤ基板１６を固定するネジ３０の頭部３０Ａとカバー８の内面８Ａの間の隙間δをカバー８の振動時の振幅分以上とする大きさの最小値Ｄ２のうちのいずれか大きい方の値程度とすることで、光源収容凹部２２の容積が効果的に抑えられる。なお、本実施形態では、深さＤは１２ｍｍである。 As described above, the depth D of the light source accommodating recess 22 is such that the LED junction temperature does not rise due to the reflected light reflected from the back surface of the cover 8, and the head 30A of the screw 30 for fixing the LED substrate 16 and the cover. By making the gap δ between the inner surfaces 8A of 8 equal to or more than the vibration amplitude of the cover 8, the decrease in luminous efficiency and life is suppressed, and the damage during vibration is prevented. ..
Further, the size of the depth D of the light source accommodating recess 22 is the minimum value D1 of the size at which the LED junction temperature does not rise due to the reflected light reflected from the back surface of the cover 8, and the head 30A of the screw 30 for fixing the LED substrate 16. The volume of the light source accommodating recess 22 is set to be about the larger of the minimum values D2 of the size that makes the gap δ between the inner surface 8A of the cover 8 and the inner surface 8A of the cover 8 equal to or more than the amplitude of the cover 8 during vibration. Is effectively suppressed. In this embodiment, the depth D is 12 mm.

一方、光源収容凹部２２の幅Ｗｄについても、値を小さくすることで、光源収容凹部２２の容積が抑えられる。本実施形態のＬＥＤ基板１６では、幅ＷｃにおけるＬＥＤ素子２１の配列数が１列に制限されていることで、当該ＬＥＤ基板１６の幅Ｗｃ、及び当該ＬＥＤ基板１６を収める光源収容凹部２２の幅Ｗｄの値を最小にできる。
ただし、幅Ｗｄが小さくなるほど、光源収容凹部２２の内壁面２２ＢがＬＥＤ基板１６（ＬＥＤ素子２１）に近づき、当該ＬＥＤ基板１６（ＬＥＤ素子２１）の放射光が遮蔽される場合がある。
そこで、耐圧防爆照明器具１では、光源収容凹部２２の幅Ｗｄは、ＬＥＤ基板１６（ＬＥＤ素子２１）から放射される放射光の放射範囲θの外に、上記深さＤの内壁面２２Ｂが位置する値（本実施形態では、この値の略最小値）とされている。
これにより、光源収容凹部２２による放射光の遮蔽を抑えつつ容積が抑えられる。なお、本実施形態では、幅Ｗｄは、５０ｍｍである。 On the other hand, the volume of the light source accommodating recess 22 can be suppressed by reducing the value of the width Wd of the light source accommodating recess 22. In the LED substrate 16 of the present embodiment, the number of arrangements of the LED elements 21 in the width Wc is limited to one row, so that the width Wc of the LED substrate 16 and the width of the light source accommodating recess 22 for accommodating the LED substrate 16 The value of Wd can be minimized.
However, as the width Wd becomes smaller, the inner wall surface 22B of the light source accommodating recess 22 approaches the LED substrate 16 (LED element 21), and the synchrotron radiation of the LED substrate 16 (LED element 21) may be shielded.
Therefore, in the pressure-resistant explosion-proof luminaire 1, the width Wd of the light source accommodating recess 22 is such that the inner wall surface 22B having a depth D is located outside the radiation range θ of the synchrotron radiation radiated from the LED substrate 16 (LED element 21). (In this embodiment, it is a substantially minimum value of this value).
As a result, the volume can be suppressed while suppressing the shielding of the synchrotron radiation by the light source accommodating recess 22. In this embodiment, the width Wd is 50 mm.

図８は、図２（Ｂ）のＶＩＩＩ-ＶＩＩＩ線における断面図である。
収容凹部２０において、上記電源収容凹部２４は、図３、図４、図６、及び図８に示すように、光源収容凹部２２の底面２２Ａの一部に設けられた凹部によって形成されている。
電源ボックス１８は、図３、図４、及び図８に示されるように、器具本体１０の長軸方向に長い略直方体形状のボックス本体５０を備えている。このボックス本体５０には、ＬＥＤ基板１６に電力を供給する電源回路が内蔵されており、またボックス本体５０の長軸方向の両端部には、電線ケーブルが接続される端子部５２が設けられている。
このボックス本体５０の幅Ｗｅは、図８に示すように、光源収容凹部２２の幅Ｗｄよりも小さく成されている。 FIG. 8 is a cross-sectional view taken along the line VIII-VIII of FIG. 2 (B).
In the accommodating recess 20, the power accommodating recess 24 is formed by a recess provided in a part of the bottom surface 22A of the light source accommodating recess 22, as shown in FIGS. 3, 4, 6, and 8.
As shown in FIGS. 3, 4, and 8, the power supply box 18 includes a box body 50 having a substantially rectangular parallelepiped shape that is long in the long axis direction of the device body 10. The box body 50 has a built-in power supply circuit that supplies electric power to the LED board 16, and terminal portions 52 to which electric wires and cables are connected are provided at both ends of the box body 50 in the long axis direction. There is.
As shown in FIG. 8, the width We of the box body 50 is made smaller than the width Wd of the light source accommodating recess 22.

電源収容凹部２４は、光源収容凹部２２の底面２２Ａにおいて、器具本体１０のケーブルグランド６の側の端部から当該光源収容凹部２２と平行に設けられている。図３、及び図８に示すように、これら光源収容凹部２２と電源収容凹部２４の間には、両者を仕切る仕切板４０が設けられている。この仕切板４０は、上記深さＤの位置に上面４０Ａを位置させて設けられることで、この上面４０Ａと光源収容凹部２２の底面２２Ａとが同一面上に位置し、この上面４０ＡにＬＥＤ基板１６が配置され、ネジ３０によって固定されている。 The power supply accommodating recess 24 is provided on the bottom surface 22A of the light source accommodating recess 22 in parallel with the light source accommodating recess 22 from the end on the side of the cable ground 6 of the instrument main body 10. As shown in FIGS. 3 and 8, a partition plate 40 for partitioning the light source accommodating recess 22 and the power supply accommodating recess 24 is provided. By providing the partition plate 40 with the upper surface 40A positioned at the position of the depth D, the upper surface 40A and the bottom surface 22A of the light source accommodating recess 22 are located on the same surface, and the LED substrate is formed on the upper surface 40A. 16 is arranged and fixed by a screw 30.

図３に示すように、仕切板４０の幅方向の両端部には、垂直に折り曲げられた形状の折曲部４０Ｃが形成されている。仕切板４０が折曲部４０Ｃを備えることで、仕切板４０の幅方向中央部の厚さを小さくしても仕切板４０の曲げ剛性を大きくすることができる。これにより、電源収容凹部２４内を起点とする爆発が発生した際でも仕切板４０の変形が抑えられ、当該仕切板４０の変形によってＬＥＤ基板１６を固定するネジ３０の頭部３０Ａとカバー８の内面８Ａとが接触することも無い。 As shown in FIG. 3, bent portions 40C having a vertically bent shape are formed at both ends of the partition plate 40 in the width direction. Since the partition plate 40 includes the bent portion 40C, the bending rigidity of the partition plate 40 can be increased even if the thickness of the central portion in the width direction of the partition plate 40 is reduced. As a result, the deformation of the partition plate 40 is suppressed even when an explosion occurs starting from the inside of the power supply accommodating recess 24, and the head 30A of the screw 30 and the cover 8 for fixing the LED substrate 16 due to the deformation of the partition plate 40 There is no contact with the inner surface 8A.

電源収容凹部２４は、図８に示すように、幅Ｗｅが電源ボックス１８のボックス本体５０の幅と同程度に形成されている。また、仕切板４０の裏面４０Ｂから電源収容凹部２４の底面２４Ａまでの深さＤｂも、電源ボックス１８のボックス本体５０の高さと同程度に形成されている。
すなわち、電源収容凹部２４は、長軸方向に垂直な断面において、図８に示すように、略矩形状を成し、その矩形状の寸法が電源ボックス１８のボックス本体５０の寸法と略等しく成されている。これにより、電源収容凹部２４の内側面２４Ｂとボックス本体５０の外側面５０Ｂとの間、及び仕切板４０の裏面４０Ｂとボックス本体５０の上面５０Ａとの間のそれぞれの隙間は寸法公差程度に抑えられ、電源収容凹部２４の容積が抑えられる。 As shown in FIG. 8, the power supply accommodating recess 24 is formed so that the width We is about the same as the width of the box body 50 of the power supply box 18. Further, the depth Db from the back surface 40B of the partition plate 40 to the bottom surface 24A of the power supply accommodating recess 24 is also formed to be approximately the same as the height of the box body 50 of the power supply box 18.
That is, the power supply accommodating recess 24 has a substantially rectangular shape in a cross section perpendicular to the long axis direction, and the rectangular dimension thereof is substantially equal to the dimension of the box body 50 of the power supply box 18. Has been done. As a result, the gaps between the inner surface 24B of the power supply accommodating recess 24 and the outer surface 50B of the box body 50 and between the back surface 40B of the partition plate 40 and the upper surface 50A of the box body 50 are suppressed to about the dimensional tolerance. Therefore, the volume of the power supply accommodating recess 24 is suppressed.

一方、電源収容凹部２４は、長軸方向を含む断面において、図４に示すように、端子部５２への電線ケーブルの結線や、電源ボックス１８を電源収容凹部２４の底面２４Ａにネジ止め固定するためのスペース２５を電源ボックス１８の両端の側に含んでいる。
ここで、一方の端子部５２にはケーブルグランド６に延びる電線ケーブルが接続され、他方の端子部５２にはＬＥＤ素子２１に給電するために器具本体１０の端部側のＬＥＤ基板１６に設けられたコネクタに接続される。したがって、どちらの端子部５２を入力側にしても、２つの端子部５２のうち、ケーブルグランド６から遠方に位置する側の端子部５２と器具本体１０の端部との間に電線ケーブルが通ることとなる。
しかしながら、電源収容凹部２４の中に電線ケーブルを配設するスペースを設けると、その分、電源収容凹部２４の容積が大きくなる。そこで、この耐圧防爆照明器具１では、図８に示すように、電源ボックス１８のボックス本体５０は、長軸方向に対して垂直な断面内において、矩形の角部５０Ｋの角が面取りされた形状（すなわち、角部５０Ｋの角を欠いた形状）に成されている。
これにより、電源収容凹部２４の容積を増大させることなく、ボックス本体５０の角部５０Ｋに電線ケーブルを通す配線スペース５４が設けられる。
なお、角部５０Ｋの形状は、図示例の形状に限らず、角部５０Ｋの角が欠かれて配線スペース５４が設けられる形状であれば、断面凹形状などの任意の形状としてもよい。 On the other hand, in the cross section including the major axis direction, the power supply accommodating recess 24 is for connecting the electric wire cable to the terminal portion 52 and fixing the power supply box 18 to the bottom surface 24A of the power accommodating recess 24 by screwing, as shown in FIG. Space 25 is included on both ends of the power supply box 18.
Here, an electric wire cable extending to the cable ground 6 is connected to one terminal portion 52, and the other terminal portion 52 is provided on the LED substrate 16 on the end side of the instrument main body 10 in order to supply power to the LED element 21. It is connected to the connector. Therefore, regardless of which terminal portion 52 is on the input side, the electric wire cable passes between the terminal portion 52 on the side of the two terminal portions 52 located far from the cable ground 6 and the end portion of the instrument main body 10. It will be.
However, if a space for arranging the electric wire cable is provided in the power supply accommodating recess 24, the volume of the power accommodating recess 24 increases accordingly. Therefore, in the flameproof luminaire 1, as shown in FIG. 8, the box body 50 of the power supply box 18 has a shape in which the corners of the rectangular corners 50K are chamfered in a cross section perpendicular to the long axis direction. (That is, the shape of the corner portion 50K lacking the corner) is formed.
As a result, a wiring space 54 for passing the electric wire cable is provided in the corner portion 50K of the box main body 50 without increasing the volume of the power supply accommodating recess 24.
The shape of the corner 50K is not limited to the shape shown in the illustrated example, and may be any shape such as a concave cross section as long as the corner of the corner 50K is missing and the wiring space 54 is provided.

このように、電源収容凹部２４の断面寸法が、電源ボックス１８の断面寸法と略等しく成されることで、電源ボックス１８の外側面５０Ｂ、及び上面５０Ａとの間に寸法公差程度の隙間しか設けないように成されている。これにより、電源収容凹部２４の容積が抑えられる。
さらに、電源ボックス１８のボックス本体５０は、角部５０Ｋが凹んだ形状に成さることで、電線ケーブルを通す配線スペース５４が設けられているので、配線スペース５４によって電源収容凹部２４の容積が増大することもない。
また、上述のように、光源収容凹部２２においても容積が抑えられているので、これら光源収容凹部２２、及び電源収容凹部２４から成る収容凹部２０の容積も小さく抑えられる。このように収容凹部の容積が小さくなることで、器具本体１０の小型化、及び軽量化が可能となる。 In this way, the cross-sectional dimension of the power supply accommodating recess 24 is made substantially equal to the cross-sectional dimension of the power supply box 18, so that only a gap of about a dimensional tolerance is provided between the outer surface 50B and the upper surface 50A of the power supply box 18. It is made not to be. As a result, the volume of the power supply accommodating recess 24 is suppressed.
Further, since the box body 50 of the power supply box 18 is provided with a wiring space 54 through which the electric wire cable is passed by forming the corner portion 50K in a concave shape, the volume of the power supply accommodating recess 24 is increased by the wiring space 54. There is nothing to do.
Further, as described above, since the volume of the light source accommodating recess 22 is also suppressed, the volume of the accommodating recess 20 including the light source accommodating recess 22 and the power supply accommodating recess 24 is also suppressed small. By reducing the volume of the accommodating recess in this way, it is possible to reduce the size and weight of the instrument main body 10.

また一般に器具本体１０の容積が小さくなるほど、爆発性雰囲気が内部で爆発したときの爆発力も抑えられるので、器具本体１０の耐圧を下げることができ、更なる小型化、及び軽量化が可能となる。
例えば耐圧防爆照明器具１においては、カバー８の材質に、耐圧防爆照明器具のカバーとして一般に用いられるガラス材に代えて、ガラス材よりも軽量な樹脂材が用いられており、樹脂材のカバー８が用いられていても、十分な耐圧防爆性能が維持されるようになっている。また樹脂材は一般的にガラス材よりも耐衝撃特性に優れており、ガラス材のカバーよりも板厚を薄くすることが可能である。例えば本実施形態のカバー８の厚さは３ｍｍである。これよりも大型の耐圧防爆照明器具であってもカバー８の厚さを５ｍｍ以下に抑えることが可能である。
なお、耐圧防爆照明器具１に、カバー８を保護するガード９が装着されない場合には、カバー８への耐衝突性を向上させるために、カバー８の材質をガラス材としてもよい。さらに、カバー８の厚みを大きくして、カバー８の耐衝撃性を向上させることもできる。 Further, in general, as the volume of the instrument body 10 becomes smaller, the explosive force when the explosive atmosphere explodes inside is also suppressed, so that the pressure resistance of the instrument body 10 can be lowered, and further miniaturization and weight reduction become possible. ..
For example, in the flameproof luminaire 1, a resin material lighter than the glass material is used as the material of the cover 8 instead of the glass material generally used as the cover of the flameproof luminaire. Even if is used, sufficient pressure-resistant explosion-proof performance is maintained. In addition, the resin material is generally superior in impact resistance to the glass material, and the plate thickness can be made thinner than the glass material cover. For example, the thickness of the cover 8 of this embodiment is 3 mm. Even if the luminaire is larger than this, the thickness of the cover 8 can be suppressed to 5 mm or less.
When the guard 9 that protects the cover 8 is not attached to the flameproof luminaire 1, the material of the cover 8 may be glass in order to improve the collision resistance with the cover 8. Further, the thickness of the cover 8 can be increased to improve the impact resistance of the cover 8.

以上説明したように、本実施形態では、器具本体１０の光源収容凹部２２とカバー８とは、ＬＥＤ基板１６の長軸方向に垂直な断面内の形状が、所定の深さＤ、及び所定の幅Ｗｄの略矩形状の空間を形成する構成とした。
これにより、カバーの内面が外側に膨出するように湾曲した形状を成す従来器具に比べ、光源収容凹部２２、及びカバー８から成る空間の容積が抑えられ、小型化、軽量化、及び低コスト化が可能になる。さらに爆発性雰囲気が内部で爆発したときの爆発力も抑えられるので、器具本体１０の耐圧を下げることができ、この分、さらなる小型化、軽量化、及び低コスト化が可能になる。 As described above, in the present embodiment, the light source accommodating recess 22 and the cover 8 of the instrument main body 10 have a predetermined depth D and a predetermined shape in a cross section perpendicular to the long axis direction of the LED substrate 16. The structure is such that a substantially rectangular space having a width Wd is formed.
As a result, the volume of the space consisting of the light source accommodating recess 22 and the cover 8 can be suppressed as compared with the conventional device having a curved shape so that the inner surface of the cover bulges outward, resulting in miniaturization, weight reduction, and low cost. Can be converted. Further, since the explosive force when the explosive atmosphere explodes inside is suppressed, the withstand voltage of the instrument main body 10 can be lowered, and further miniaturization, weight reduction, and cost reduction are possible.

また本実施形態では、光源収容凹部２２の深さＤは、カバー８の裏面反射の反射光によってＬＥＤ素子２１のジャンクション温度が上昇しない大きさとした。
これにより、ＬＥＤジャンクション温度の上昇に起因したＬＥＤ素子２１の発光効率の低下や、ＬＥＤ素子２１の短命化を防止できる。 Further, in the present embodiment, the depth D of the light source accommodating recess 22 is set to a size such that the junction temperature of the LED element 21 does not rise due to the reflected light reflected from the back surface of the cover 8.
As a result, it is possible to prevent a decrease in the luminous efficiency of the LED element 21 due to an increase in the LED junction temperature and a shortening of the life of the LED element 21.

また本実施形態では、ＬＥＤ基板１６は、光源収容凹部２２にネジ３０により固定されており、深さＤは、ネジ３０の頭部３０Ａとカバー８の内面８Ａの間の隙間δをカバー８の振動時の振幅分以上とする大きさとした。
これにより、かつ、耐圧防爆照明器具１に衝撃や振動に伴うカバー８の振動によって当該カバー８が損傷を受けることが防止される。 Further, in the present embodiment, the LED substrate 16 is fixed to the light source accommodating recess 22 by the screw 30, and the depth D covers the gap δ between the head 30A of the screw 30 and the inner surface 8A of the cover 8. The size was set to be equal to or greater than the amplitude at the time of vibration.
As a result, it is possible to prevent the cover 8 from being damaged by the vibration of the cover 8 due to the impact or vibration of the flameproof luminaire 1.

また本実施形態では、光源収容凹部２２の幅Ｗｄは、ＬＥＤ基板１６からの放射光の放射範囲θの外に、光源収容凹部２２の内壁面２２Ｂが位置する大きさとした。
これにより、光源収容凹部２２による放射光の遮蔽が抑えられ、効率低下が抑えられる。 Further, in the present embodiment, the width Wd of the light source accommodating recess 22 is set to a size such that the inner wall surface 22B of the light source accommodating recess 22 is located outside the radiation range θ of the synchrotron radiation from the LED substrate 16.
As a result, shielding of synchrotron radiation by the light source accommodating recess 22 is suppressed, and a decrease in efficiency is suppressed.

また本実施形態では、電源収容凹部２４は、器具本体１０が延びる方向（長軸方向）に垂直な断面内の形状が略矩形であり、当該矩形の寸法が、電源ボックス１８の断面寸法と略等しく成されている。
これにより、電源ボックス１８を器具本体１０に内蔵する場合であっても、電源収容凹部２４の容積が抑えられる。 Further, in the present embodiment, the power supply accommodating recess 24 has a substantially rectangular shape in a cross section perpendicular to the direction in which the instrument body 10 extends (long axis direction), and the rectangular dimension is substantially the cross-sectional dimension of the power supply box 18. It is made equal.
As a result, even when the power supply box 18 is built in the instrument main body 10, the volume of the power supply accommodating recess 24 can be suppressed.

また本実施形態では、電源ボックス１８は、器具本体１０が延びる方向に垂直な断面における角部５０Ｋの角を欠いた形状に形成さている。
これにより、角部５０Ｋの部分を、電源ボックス１８の配線スペース５４とすることができ、この配線スペース５４によって電源収容凹部２４の容積が増大することがない。 Further, in the present embodiment, the power supply box 18 is formed in a shape lacking a corner of a corner portion 50K in a cross section perpendicular to the direction in which the instrument main body 10 extends.
As a result, the corner portion 50K can be used as the wiring space 54 of the power supply box 18, and the wiring space 54 does not increase the volume of the power supply accommodating recess 24.

なお、上述した実施形態は、あくまでも本発明の一態様の例示であり、本発明の要旨の範囲において任意に変形、及び応用が可能である。 It should be noted that the above-described embodiment is merely an example of one aspect of the present invention, and can be arbitrarily modified and applied within the scope of the gist of the present invention.

例えば、上述した実施形態では、電源ボックス１８を内蔵した耐圧防爆照明器具１を例示したが、これに限らない。すなわち、商用電力から直流のＬＥＤ駆動電力を生成する回路をＬＥＤ基板１６に実装することで電源ボックス１８、及び電源収容凹部２４を不要にし、器具本体１０の容積を更に小さくできる。この場合、図９に示す耐圧防爆照明器具１００のように、器具本体１１０の上面１００Ｂにおいても、電源収容凹部２４による第２膨出部６４が無く、更なる小型化、軽量化、及び低コスト化が実現できる。 For example, in the above-described embodiment, the flameproof lighting fixture 1 having a built-in power supply box 18 has been illustrated, but the present invention is not limited to this. That is, by mounting a circuit for generating DC LED drive power from commercial power on the LED substrate 16, the power supply box 18 and the power supply accommodating recess 24 are unnecessary, and the volume of the appliance main body 10 can be further reduced. In this case, as in the flameproof lighting fixture 100 shown in FIG. 9, the upper surface 100B of the fixture main body 110 does not have the second bulging portion 64 due to the power supply accommodating recess 24, which further reduces the size, weight, and cost. Can be realized.

また上述した実施形態において、発光素子の一例としてＬＥＤ素子２１を例示したが、これに限らず、有機ＥＬ等の任意の発光素子を用いることができる。 Further, in the above-described embodiment, the LED element 21 has been illustrated as an example of the light emitting element, but the present invention is not limited to this, and any light emitting element such as an organic EL can be used.

１、１００ 耐圧防爆照明器具
６ ケーブルグランド
８ カバー
８Ａ 内面
１０、１１０ 器具本体
１２ カバー枠
１６ ＬＥＤ基板（発光素子基板）
１８ 電源ボックス
２０ 収容凹部
２１ ＬＥＤ素子（発光素子）
２２ 光源収容凹部
２２Ｂ 内壁面
２４ 電源収容凹部
３０ ネジ
３０Ａ 頭部
５０ ボックス本体
５０Ｋ 角部
５４ 配線スペース
Ｄ 深さ
Ｗｄ 幅 1,100 Explosion-proof lighting fixture 6 Cable ground 8 Cover 8A Inner surface 10, 110 Fixture body 12 Cover frame 16 LED board (light emitting element board)
18 Power supply box 20 Containment recess 21 LED element (light emitting element)
22 Light source accommodating recess 22B Inner wall surface 24 Power accommodating recess 30 Screw 30A Head 50 Box body 50K Corner 54 Wiring space D Depth Wd Width

Claims (2)

発光素子を列状に配列した矩形板状の発光素子基板と、
一方向に延び、前記発光素子基板を収めた器具本体と、
を備えた耐圧防爆照明器具において、
前記器具本体は、
前記発光素子基板を収める凹部である光源収容凹部と、
前記光源収容凹部を閉塞する透光性の平板状のカバーと、
前記発光素子基板に電力を供給する電源回路を収めた電源ボックスと、を備え、
前記電源ボックスは、略直方体形状を成し、
前記電源ボックスを収める電源収容凹部が前記光源収容凹部の底面に設けられ、
前記電源収容凹部は、
前記器具本体が延びる方向に垂直な断面内の形状が略矩形であり、当該矩形の寸法が、前記電源ボックスの断面寸法と略等しく成されている
ことを特徴とする耐圧防爆照明器具。 A rectangular plate-shaped light emitting element substrate in which light emitting elements are arranged in a row,
An instrument body that extends in one direction and houses the light emitting element substrate,
In flameproof lighting fixtures equipped with
The instrument body
A light source accommodating recess, which is a recess accommodating the light emitting element substrate,
A translucent flat cover that closes the light source accommodating recess,
A power supply box containing a power supply circuit for supplying electric power to the light emitting element substrate is provided.
The power supply box has a substantially rectangular parallelepiped shape.
A power supply accommodating recess for accommodating the power box is provided on the bottom surface of the light source accommodating recess.
The power storage recess is
A pressure-resistant explosion-proof luminaire characterized in that the shape in a cross section perpendicular to the direction in which the fixture body extends is substantially rectangular, and the dimensions of the rectangle are substantially equal to the cross-sectional dimensions of the power supply box. 前記電源ボックスは、前記器具本体が延びる方向に垂直な断面における角部の角を欠いた形状に成されている、ことを特徴とする請求項１に記載の耐圧防爆照明器具。 The pressure-resistant explosion-proof luminaire according to claim 1 , wherein the power supply box is formed in a shape lacking corners in a cross section perpendicular to the direction in which the fixture body extends.
JP2016136895A 2016-07-11 2016-07-11 Explosion-proof lighting equipment Active JP6834203B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2016136895A JP6834203B2 (en) 2016-07-11 2016-07-11 Explosion-proof lighting equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2016136895A JP6834203B2 (en) 2016-07-11 2016-07-11 Explosion-proof lighting equipment

Publications (2)

Publication Number Publication Date
JP2018010729A JP2018010729A (en) 2018-01-18
JP6834203B2 true JP6834203B2 (en) 2021-02-24

Family

ID=60995701

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2016136895A Active JP6834203B2 (en) 2016-07-11 2016-07-11 Explosion-proof lighting equipment

Country Status (1)

Country Link
JP (1) JP6834203B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7363324B2 (en) * 2019-10-04 2023-10-18 岩崎電気株式会社 Light emitting unit and lighting equipment
CN114397061B (en) * 2021-12-15 2024-04-26 中国矿业大学 Online maintenance and self-checking system and method for explosion suppression device

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005093246A (en) * 2003-09-17 2005-04-07 Toshiba Lighting & Technology Corp Explosion-proof lighting fixture and explosion-proof lighting system
JP2008059965A (en) * 2006-09-01 2008-03-13 Stanley Electric Co Ltd Vehicular headlamp, lighting system and its heat radiation member
KR100910539B1 (en) * 2008-09-29 2009-07-31 화우테크놀러지 주식회사 Explosion free lamp with led
TWM383086U (en) * 2009-09-07 2010-06-21 Thermoshuttle Co Ltd LED light tube
JP6017764B2 (en) * 2011-06-24 2016-11-02 Idec株式会社 Explosion-proof electrical equipment
JP2013038020A (en) * 2011-08-10 2013-02-21 Akira Ito Fluorescent lamp type led lamp
JP6143843B2 (en) * 2012-04-13 2017-06-07 ケーエムダブリュ・インコーポレーテッド Lighting device using LED light emitting module
JP6142545B2 (en) * 2013-01-24 2017-06-07 岩崎電気株式会社 Explosion-proof lighting equipment
JP3186125U (en) * 2013-07-08 2013-09-19 三鈴精工株式会社 LED lamp
JP6504355B2 (en) * 2014-06-06 2019-04-24 パナソニックＩｐマネジメント株式会社 Lamps and headlamps for vehicles

Also Published As

Publication number Publication date
JP2018010729A (en) 2018-01-18

Similar Documents

Publication Publication Date Title
JP5699753B2 (en) Lamp apparatus and lighting apparatus
JP5843268B2 (en) Lighting device
EP2899455B1 (en) Light source unit
JP5547520B2 (en) LED lighting device
JP5971469B2 (en) lighting equipment
JP6834203B2 (en) Explosion-proof lighting equipment
JP7043951B2 (en) Covers and lighting equipment
JP6408268B2 (en) lighting equipment
JP5991587B2 (en) lighting equipment
JP6041267B2 (en) lighting equipment
JP2020077802A (en) Electronic unit
JP6497658B2 (en) lighting equipment
JP7229123B2 (en) Telescopic structure for lighting fixture, lighting fixture, and lighting device
JP6992530B2 (en) Sealed lighting fixtures
JP6569935B2 (en) Recessed lighting fixture
JP6142545B2 (en) Explosion-proof lighting equipment
JP5879525B2 (en) lighting equipment
JP6497515B2 (en) Lighting device
JP6992529B2 (en) Sealed lighting fixtures
JP7390613B2 (en) Power supplies and lighting equipment
JP2014011031A (en) Lighting apparatus
JP4748097B2 (en) lighting equipment
JP6672694B2 (en) Lighting equipment
JP6883784B2 (en) Lighting device
JP6850426B2 (en) Lighting equipment and lighting equipment

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20190517

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20200210

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20200303

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20200430

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20200818

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20200924

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20210105

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20210118

R150 Certificate of patent or registration of utility model

Ref document number: 6834203

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313111

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350