| 摘要 |
A reinforcing pipe of a sign frame is provided to increase the attractiveness and visibility of the sign frame by forming the reinforcing pipe as a polygonal column with a hollow inside for irregular reflection of light from a fluorescent lamp, thereby preventing shade generation on a flex sheet installed on the front side of the sign frame. A reinforcing pipe(1) of a sign frame supports inner parts of the sign frame. A fluorescent lamp(112) installed inside of the sign frame lights a flex sheet(110) in front of it. The reinforcing pipe includes a pipe body(10) formed to be a polygonal column with a hollow inside for irregular reflection of light from the lamp and a groove(12) formed on the pipe body in the longitudinal direction of the pipe. The pipe body prevents the shade generation on the flex sheet installed on the front side of the sign frame. |
