Projection Cabinet Wall-Contact Protrusion for Accurate Image Positioning
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Solution Overview
Problem
Existing projection cabinets suffer from reduced positioning accuracy due to manufacturing and assembly errors, leading to image distortion and quality degradation in projected images.
Innovation Solution
A projection cabinet design featuring a housing with a projector, an installation portion, and a protruding portion that contacts the projection surface to secure the projector in a predetermined position, minimizing manufacturing variations and assembly errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a lid is used for positioning the cabinet, then the cabinet can be set in an appropriate projection position, but machining errors and assembly errors reduce positioning accuracy
Solution Approach 1:
The positioning function is segmented from the lid structure and implemented through a dedicated protruding portion that extends from the housing. This separate positioning element can be precisely manufactured and positioned independently, reducing the impact of machining and assembly errors in the main lid structure on overall positioning accuracy.
Solution Approach 2:
The protruding portion is designed to automatically contact the projection surface and position the projector without requiring manual adjustment. The positioning is achieved through the inherent geometric relationship between the protruding portion and the projection surface, eliminating the need for fine-tuning operations.
2Ease of operation
If positioning is performed using a lid, then the projector can be positioned, but image distortion and quality degradation occur due to positioning errors
Solution Approach 1:
By separating the positioning function into a dedicated protruding portion, the system achieves more reliable positioning that directly impacts image quality. The protruding portion's precise geometry ensures consistent positioning, reducing image distortion and maintaining projection quality.
Solution Approach 2:
The invention replaces manual positioning operations with a mechanical positioning system based on the protruding portion's geometric constraints. This mechanical substitution eliminates human error in positioning and ensures consistent, high-quality projections.
3Manufacturing precision
If the protruding portion contacts the projection surface, then positioning accuracy is improved, but the structure becomes more complex
Solution Approach 1:
The protruding portion is integrated into the housing structure, merging the positioning function with the existing cabinet framework. This integration approach achieves precise positioning without adding separate, complex positioning mechanisms, thereby minimizing structural complexity while maintaining high positioning accuracy.
Data Source
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AI summary
A projection cabinet includes a cabinet main body as a housing housing a projector that emits a projection light as a projection image to be projected onto a wall surface and having an opening as a first opening through which the projection light passes, a lower assembly as an installation portion disposed in the cabinet main body, in which the projector is installed, and a protrusion as a protruding portion disposed in the cabinet main body and protruding toward a side of the wall surface, wherein the protrusion is brought into contact with the wall surface, and thereby, the projector is positioned in a predetermined position where the projection image is displayed on the wall surface.