| 摘要 |
The present invention relates to a portable screen assembly which is handy, simple in construction, and less expensive. A spring-biased roller (2) is rotatably mounted to a lower casing (1), and a screen (4) is rotatably mounted at one end thereof to a top bar (3). The screen is set to a desired height by adjusting a repulsive force for a descent of the screen and an upward biasing force of a height retaining means (6) engaged with a expansion means (5) against an elastic force and gravity of a spring attached to the spring-biased roll (2). <IMAGE>The present invention relates to a portable screen assembly which is handy, simple in construction, and less expensive. A spring-biased roller (2) is rotatably mounted to a lower casing (1), and a screen (4) is rotatably mounted at one end thereof to a top bar (3). The screen is set to a desired height by adjusting a repulsive force for a descent of the screen and an upward biasing force of a height retaining means (6) engaged with a expansion means (5) against an elastic force and gravity of a spring attached to the spring-biased roll (2). <IMAGE> |
