Projection Display Device with Integrated Rotating Stand
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Solution Overview
Problem
Existing projection-type image display devices face stability issues when vertically placed and are not suitable for portable applications due to bulky support structures.
Innovation Solution
A compact projection-type image display device with integrally formed stand legs that can be easily adjusted for horizontal or vertical placement, featuring a rotating mirror cover and a freeform surface lens system for optimal image projection, allowing for portable and versatile use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a support member is attached on the bottom surface of the main body unit to facilitate adjusting projection angle, then the projection angle adjustment is improved, but the device size increases and portability is reduced
Solution Approach 1:
The support member is integrated into the main body unit as a unified structure rather than being a separate attached component. This merging eliminates the need for additional space while maintaining the projection angle adjustment function, thereby resolving the contradiction between ease of operation and device size.
Solution Approach 2:
The support member serves multiple functions: it provides structural support, enables projection angle adjustment, and maintains a compact form factor for portability. By designing a multi-functional component, the patent achieves ease of operation without increasing device volume.
2Area of stationary object
If the device is arranged vertically to save space, then the space utilization is improved, but the stability of the device deteriorates
Solution Approach 1:
The support member is designed to be rotatable, allowing the device to dynamically adjust between horizontal and vertical arrangements. This dynamic capability enables the device to achieve stable configurations in both orientations, resolving the contradiction between space utilization and stability.
Solution Approach 2:
The patent changes the orientation parameter of the support member to allow the device to adapt its stability characteristics. By adjusting the support member's angle and position, the device maintains stability whether arranged vertically for space savings or horizontally for optimal performance.
3Stability of the object's composition
If a bulky support structure is used to ensure stability, then the device stability is improved, but the portability of the device is reduced
Solution Approach 1:
The support function is segmented into a compact, integrated support member within the main body unit rather than requiring a bulky external structure. This segmentation allows the device to achieve stability through a minimized volume component, resolving the contradiction between stability and portability.
Solution Approach 2:
The support member utilizes a compact, space-efficient design that provides structural support without requiring bulky materials. The integrated support structure achieves necessary stability while maintaining a thin, portable form factor suitable for mobile applications.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device achieves stable and distortion-free image projection in various orientations, ensuring excellent portability and usability by allowing simple manipulation of the device's arrangement state.
Implementation Method 1
a projection optical system which includes a freeform surface lens
Implementation Method 2
projection optical system which includes a freeform surface lens
Implementation Method 3
a rotating mirror cover
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Provided is a practically excellent projection-type image display device being capable of changing an arrangement state appropriately according to a use situation by simple manipulation. In the projection-type image display device, an optical system including a projection lens system 102 and for emitting light image to be enlarging-projected is accommodated inside a frame 1 configured with a lower case 2 and an upper case 3, a reflecting mirror 32 which enlarging-projects the image light emitted from the optical system toward a screen S or a top surface of a table T as a display plane is openably attached to a portion of the upper case of the frame, the device can be installed by a bottom surface of the lower case or one side surface thereof, a stand leg 5 is accommodated integrally with the case and extractably in the one side surface of the lower case, and the stand leg has a form (an inclination angle, a ratchet mechanism, a locking mechanism, and the like) satisfying an installation condition for vertically erected arrangement in the extracted state.