| 摘要 |
An open-closed structure is used to open or close a lamp door of a projector. The projector includes a main lid. The lamp door covers the outer side of the main lid. The open-closed structure includes a base and a knob. The base is disposed at the inner side of the main lid. The knob is rotatably disposed on the base, and has an axial portion, a hook portion and a stick-like portion. One end of the hook portion is connected to the axial portion, and another end of that is selectively engaged with or separated from the lamp door. One end of the stick-like portion is also connected to the axial portion. When the axial portion of the knob is rotated to make the another end of the hook portion separated from the lamp door, another end of the stick-like portion is dependently moved to push the lamp door.
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