Light-shielding lamp for explosion-proof lighting fixtures

Abstract

As shown in Reference Figures 1 to 3 showing the state of use, this product is installed between the transmission glass on the lighting fixture side and the transmission glass on the observation window side of the tank in a lighting fixture equipped with a light source unit and a camera unit, which is installed in the observation window of the tank for the purpose of monitoring the condition of the stored material in the tank, for example, and is configured from two members that can slide relative to each other to block light emitted from the light source unit and reflected by the transmission glass on the observation window side from reaching the angle of view of the camera of the camera unit. Because it is configured from two members that can slide relative to each other, it can ensure a light-blocking state while absorbing any variations in the gap between the tank and the lighting fixture that occur due to the shapes of the tank or the lighting fixture casing, etc.

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