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VENT ALLOWING FOR THE FREE PASSAGE OF GASES AND VAPORS AND PREVENTING WATER AND DUST, AND LAMP HAVING THE VENT
VENT ALLOWING FOR THE FREE PASSAGE OF GASES AND VAPORS AND PREVENTING WATER AND DUST, AND LAMP HAVING THE VENT
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机译:允许自由通行的气体和蒸气并防止水和灰尘的排气孔,灯也有排气孔
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摘要
PURPOSE: A dust proof and water proof ventilation device and a lamp including the same are provided to prevent dust and moisture from entering into the inside of the lamp by a dust proof and water proof function. CONSTITUTION: A ventilation device(20) is in the shape of a hollow screw. The ventilation device is composed of a head(21), a combination unit(25), a shielding means(30) formed on the head, and a cover(40) covering the head. The outer diameter of the head is gradually reduced from the lower part to upper part direction. A separated space is formed between a vent(42) of the cover and the outer side of the head. A gasket such as an O-ring(29) is formed on the outside of the combination unit. The shielding means is attached on a support(54) of a frame(50).
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