1. Field of the Invention
The present invention relates to a projection device, and more particularly to a combination structure for combining a plurality of internal elements with an outer cover in the projection device.
2. Description of Related Art
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A series of assembly and test procedures must be processed before the conventional projector 10 is sold to a user. Among these procedures, if scrapes or bad structure precisions appear on the lower cover 14, the lower cover 14 must be reassembled to prevent a flawed production from being sold. Because the internal elements 12 are fixed on the lower cover 14, they must be respectively detached from the lower cover 14 one by one and then reinstalled onto a new lower cover. This causes the time consuming. Besides the lower cover 14 must have both an artistic outlook and the precise element connection module 16, the production cost thereof is not cheap. If the replacement must be made only because the outlook of the lower cover 14 is defected, the production cost of the projector 10 will be increased.
One object of the present invention is to provide a projection device for solving the problem caused from the conventional projector mentioned above.
The projection device comprises a plurality of elements, a base seat and an outer cover. The elements are respectively used to execute specific functions to cause the projection device to operate. The base seat comprises a first side surface and a second side surface. An element fixing structure is disposed on the first side surface for fixing the elements and a first fixing device is disposed on the second side surface. The outer cover comprises a third side surface and a fourth side surface. The third side surface is used for forming an outlook surface of the projection device and a second fixing device is disposed on the fourth side surface. When the projection device is being assembled, the elements are installed on the element fixing structure of the base seat, and the first fixing device of the base seat is combined with the second fixing device of the outer cover.
As mentioned above, the elements are first fixed on the base seat to form a projection module. And then, the base seat of the projection module is combined with the outer cover to form the projection device of the present invention. When The outer cover needs to be replaced as a result of defects (e.g. scrape and bad size precision) appearing on the outer cover, the replacement thereof can then be processed after the projection module is detached from the outer cover. Such kind of course of action saves time and replaces easily. Furthermore, the outer cover according to the present invention only has an outlook function and the simple fixing device so that the manufacturing is easy and the production cost is low. Besides, only the projection module needs to be tested when the test of the projection device is to be processed and the outer cover is assembled after the test is completed so that any damage of the outer cover can be avoided while testing. And, the projection module is suitable for use in the projection device with different outlooks to enhance the applicable-to-all property.
The present invention can be more fully understood by reference to the following description and accompanying drawings, in which:
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In another preferred embodiment, the combination way of the first fixing device of the base seat 24 and the second fixing device of the outer cover 32 is not limited to locking together through the screws 38, locking together through hooking device or other mechanical combination manner can also be applied. Furthermore, the material of the base seat 24 is not limited to metal materials, plastic materials can also be adopted.
Comparing to the conventional technology, according to the present invention, the elements 22 are first fixed onto the base seat 24 to form the projection module 30, and the base seat 24 of the projection module 30 and the outer cover 32 are then combined to each other, the whole construction is applied to the projection device 20. When the outer cover 32 needs to be replaced as a result of defects (e.g. scrape and bad size precision) appearing on the outer cover 32, the replacement thereof can then be processed after the projection module 30 is detached from the outer cover 32. It is unnecessary to be processed like the conventional technology that the internal elements 12 must first respectively detached from the lower cover 14 one by one and then installed respectively onto a new lower cover. This will cause the waste on the production time. According to the present invention, the outer cover 32 only has an outlook function and simple fixing device. The effects of the present invention are the less production time, the easy replacement, the easy manufacturing, and the low production cost. Besides, when the test of the production device is to be processed, only the projection module 30 needs to be tested, and the outer cover 32 is then installed thereon after the test is complete so that any damage on the outer cover 32 can be avoided while testing. The elements (e.g. an optical engine, a fan and a light bulb) for projecting images are formed to be a projection module 30 to separate from an outlook element (e.g. the outer cover 32) so that the projection module 30 is matched with the projection device with different outlooks to use, the applicable-to-all property is enhanced.
It is noted that the combination structure for the projection device described above is the preferred embodiment of the present invention for the purpose of illustration only, and are not intended as a definition of the limits and scope of the invention disclosed. Any modifications and variations that may be apparent to a person skilled in the art are intended to be included within the scope of the present invention.
Number | Date | Country | Kind |
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093130051 | Oct 2004 | TW | national |