Multi-Angle Projector Layout for Center-of-Gravity Stability
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Solution Overview
Problem
Projector devices become unstable during multi-angle projection due to the transfer of the center of gravity outside the main system body when rotated, preventing effective multi-angle projection.
Innovation Solution
The projector device is designed with the fan and at least one-half of the heat sink on one side of a virtual plane and the projection lens module on the opposite side, allowing rotation without tipping, and includes a heat dissipation system to maintain stability and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the projector device is rotated to achieve multi-angle projection, then the projection angle versatility is improved, but the device stability deteriorates due to center of gravity transfer outside the main system body
Solution Approach 1:
The patent repositions components from a traditional planar arrangement to a three-dimensional distributed layout. The heat sink is divided into first and second heat dissipation portions located on opposite sides of the rotating body, with the light source positioned between them. This spatial redistribution across multiple dimensions ensures the center of gravity remains within the rotational axis range, enabling stable rotation to multiple projection angles without tipping.
Solution Approach 2:
The patent applies local quality by creating asymmetric component distribution tailored to specific functional requirements. The first heat dissipation portion and second heat dissipation portion are positioned on opposite sides of the rotating body at specific locations to balance the center of gravity. This localized strategic placement of components allows the device to achieve both rotational stability and effective heat dissipation in different regions.
2Length of stationary object
If the optical engine and heat dissipation system are arranged in a flat housing to minimize thickness, then the device compactness is improved, but the multi-angle projection capability deteriorates due to center of gravity instability during rotation
Solution Approach 1:
The patent transitions from a two-dimensional flat housing arrangement to a three-dimensional component distribution. The heat sink portions are positioned on opposite sides of the rotating body in the vertical dimension, while the light source is positioned between them. This three-dimensional arrangement maintains compact thickness while enabling stable multi-angle projection through proper center of gravity positioning.
Solution Approach 2:
The patent employs a nested arrangement where the light source module is positioned between the first and second heat dissipation portions within the rotating body. This nested configuration allows compact integration of multiple functional components (light source, heat sink portions) in a space-efficient manner while maintaining the center of gravity within the rotational axis range for stable multi-angle projection.
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
Enables stable multi-angle projection by maintaining the center of gravity within the system's bounds during rotation, ensuring the projector remains stable and functional across various angles.
Implementation Method 1
a heat sink...arranged in the first body and beside the optical engine module
Implementation Method 2
a fan and at least one-half of the heat sink...located on a first side of the virtual plane
Implementation Method 3
The fan and at least one-half of the heat sink arranged in a first body are located on a second side of a virtual plane
Implementation Method 4
a projection lens module arranged in the first body and having a projection optical axis to project the projection beam out of the first body along the projection optical axis
Data Source
AI summary
A projector device including a first body, a second body that the first body stacked on, a rotating shaft connecting the first and the second bodies, a projection lens module arranged in the first body and having a projection optical axis not parallel to the rotating shaft, an optical engine module arranged in the first body for providing a projection beam along the projection optical axis, a heat sink, and a fan is provided. The rotating shaft is located on a virtual plane parallel to the projection optical axis. The heat sink and the fan are arranged in the first body and beside the optical engine module. The fan and at least one-half of the heat sink are located on a first side of the virtual plane, and the projection lens module is located on a second side opposite to the first side of the virtual plane.