| 摘要 |
A security camera for a rolling room of iron works is provided to allow photographing of the inside of the rolling room to be possible through a focus hole having a small diameter by machining a lens so that a focus of the lens is formed in the focus hole formed in the pin hole housing. A security camera for a rolling room of iron works comprises a pin hole housing(10) and a cooling unit(20). The pin hole housing includes a lens and a camera in the inside, a focus hole formed by an inclined surface so as to form a focus of the lens and discharge air to the outside, and a compressed air hole on the other side of the focus hole. The cooling unit includes one side connected to the compressed air hole of the pin hole housing, and the other side forming a compressed air pipe connected to a compressed air generation unit. The lens forms a focus in the focus hole formed in the pin hole housing. |
