EXPLOSION-PROOF TYPE CAMERA

PROBLEM TO BE SOLVED: To improve impact resistance of a window part without limiting the window part to a small diameter, and without leading to reduction in image quality, and to improve explosion proofness of an explosion-proof type camera.SOLUTION: An explosion-proof type camera has a camera main...

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Bibliographische Detailangaben
Hauptverfasser: KUWANA MINORU, MURAKAMI SEIKI, HASHINO HIROYOSHI
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:PROBLEM TO BE SOLVED: To improve impact resistance of a window part without limiting the window part to a small diameter, and without leading to reduction in image quality, and to improve explosion proofness of an explosion-proof type camera.SOLUTION: An explosion-proof type camera has a camera main body 10 housed in an explosion-proof housing 20 having a shooting window part 22a. An inner flange part 22b is formed that protrudes inward around the window part of the explosion-proof housing, and the window part is covered from an inner side with an elastic sheet 31. A window plate 32 is arranged in an inner side surface of the elastic sheet, and the elastic sheet and window plate have transmissivity of shooting light by the camera main body. The window plate is fixed to the explosion-proof housing in a state where a perimeter edge part of the elastic sheet is tightly held by the inner flange part and the window plate. The window plate is fixed to the explosion-proof housing due to adhesive 33, and the elastic sheet or the adhesive is applied that is low in Young's modulus.SELECTED DRAWING: Figure 2 【課題】窓部を小口径に制限することなく、画質の低下を招くことなく窓部の耐衝撃性を向上し防爆型カメラの防爆性を向上する。【解決手段】撮影用の窓部22aを有した防爆筐体20にカメラ本体10を収納した防爆型カメラである。防爆筐体の窓部の周囲に内方に突出する内フランジ部22bが形成され、窓部が弾性シート31により内側から覆われ、弾性シートの内側面に窓板32が配置され、弾性シート及び窓板は、カメラ本体による撮影光の透過性を有し、弾性シートの周縁部が内フランジ部と窓板とで挟持された状態で窓板が防爆筐体に固定されたものである。窓板は接着剤33により防爆筐体に固定され、弾性シートや接着剤は低ヤング率のものが適用される。【選択図】図2