| 摘要 |
The present invention discloses a projector comprising: a lamp module for receiving therein a lamp as a light source; an enclosure fixing said lamp module therein such that an optical axis of said lamp module is kept in a predetermined direction; two positioning pins provided on said lamp module and inserted into positioning holes made in a vertical direction to said enclosure for controlling movement of said lamp module in a horizontal plane; and a first rib provided on said enclosure as extended inward from an inner wall of a ceiling plate and second ribs provided on said enclosure as extended inward from an inner wall of a bottom plate, said lamp module is fixed in said enclosure and secured by one screw while said lamp module is positioned within a horizontal plane by said positioning pins, and further is vertically supported between said first rib and second ribs.
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