Projection Device Symmetrical Power Supply Layout
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Solution Overview
Problem
Existing projection type image display devices, particularly large-scaled projection televisions, face challenges in terms of external dimension and weight, making them unsuitable for use with mobile terminals due to their size and weight, which complicates their integration and portability.
Innovation Solution
A projection type image display device with a housing design that includes an erectable shape, a reflective mirror, air exhaust ports, an image processing unit, and a power supply unit, where the optical system is aligned along the central axis, and the image processing and power units are symmetrically positioned, along with a cooling structure that includes sirocco and axial flow fans to manage heat efficiently, reducing the device's size and weight while maintaining projection performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a large-scaled projection television is used, then projection performance is improved, but external dimension and weight increase
Solution Approach 1:
The device is divided into an upper case containing the optical system and a lower case containing the light source and control units, allowing separate optimization of projection performance and weight management
Solution Approach 2:
The optical system is arranged along the central axis in parallel to the bottom surface, changing the traditional vertical arrangement to a horizontal configuration that reduces overall device height and weight
2Reliability
If a large-scaled projection television is used, then projection performance is improved, but external dimension increases
Solution Approach 1:
The optical system is arranged along the central axis in parallel to the bottom surface, changing the traditional vertical arrangement to a horizontal configuration that reduces overall device height and weight
Solution Approach 2:
The light source and control units are merged into the lower case, consolidating weight-generating components into a compact base structure that minimizes overall device dimensions
3Ease of manufacture
If traditional asymmetric arrangement is used, then manufacturing simplicity is improved, but device balance and stability worsen
Solution Approach 1:
The patent deliberately uses symmetric arrangement of light source and control units around the central optical axis, inverting the conventional asymmetric design to achieve better balance and stability while maintaining manufacturability
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 solution enables a compact and lightweight projection device suitable for use with mobile terminals, achieving excellent practical usability with a configuration that allows for effective image projection and efficient heat management, enabling the device to be carried and used with mobile terminals.
Implementation Method 1
a reflective mirror attached to the upper case and the projection lens system including a free-form surface lens
Implementation Method 2
a cooling structure that includes sirocco and axial flow fans to manage heat efficiently
Data Source
AI summary
A projection type image display device to be used with a mobile terminal has a housing with an upper side case having a reflective mirror attached thereto and an openable mirror cover formed thereon and a lower side case having a plurality of air exhausting openings provided on a side wall surface thereof. A light source is provided for shining image light that has been magnified and projected onto the reflective mirror; and an image is magnified and projected on the basis of the light from the light source. An optical system is disposed within the lower side case parallel to the bottom surface of the case along a central axis of the device, and also an image processing unit, which includes the light source, and a power supply unit are disposed within the lower case symmetrically with the optical system as the center.