Patent attributes
The present invention provides a lamp cooling device for cooling a lamp including a transparent front plate, a reflector that reflects light emitted from a light source to the transparent front plate, and the light source disposed in an interior space enclosed by the transparent front plate and the reflector. The lamp cooling device includes a closed pipe line through which a gas is circulated. The lamp has a gas intake opening and a gas exhaust opening, the openings communicating with the interior space. The pipe line is connected to both of the gas intake opening and the gas exhaust opening so as to include the interior space of the lamp. The pipe line includes a flexible portion connected to the gas intake opening and another flexible portion connected to the gas exhaust opening.