Projector Light Source Cooling via Diagonal Communicating Ports
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Solution Overview
Problem
Existing light source devices for projectors have limited air outlet areas, leading to insufficient discharge of heated air, which restricts the elongation of arc tube life.
Innovation Solution
A light source device with a tubular body featuring communicating ports diagonally positioned relative to the arc tube's center line, allowing air to flow through ducts and channels for efficient cooling and air discharge, and incorporating rectifying members to optimize air flow and pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If channels are provided throughout the area of the air guide member to guide air toward openings, then air can be supplied to multiple positions, but the air outlet port area becomes limited
Solution Approach 1:
The air guide member is divided into multiple independent channel regions, each serving a specific opening position. This segmentation allows air to be directed to multiple locations simultaneously while maintaining dedicated pathways, resolving the conflict between comprehensive air supply coverage and sufficient outlet port area.
Solution Approach 2:
The invention transitions from a two-dimensional planar air guide structure to a three-dimensional configuration with channels extending in multiple spatial dimensions. This allows air outlets to be positioned at various heights and angles, increasing the effective outlet area without compromising the structural integrity or air supply efficiency.
2Device complexity
If the air outlet port area is small, then the air guide member structure is simplified, but heated air cannot be discharged efficiently
Solution Approach 1:
Multiple air channels are nested within the air guide member structure, with each channel containing smaller sub-channels or flow paths. This nested configuration maximizes the air discharge capacity within a compact structure, maintaining simplicity while significantly improving heated air discharge efficiency through multi-level airflow management.
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
This configuration ensures secure air supply to the arc tube's upper part and efficient discharge of heated air, thereby increasing the arc tube's life and projector performance across various installation positions.
Implementation Method 1
an air guide member is disposed between the reflection mirror and the front glass. This air guide member has a cylindrical shape surrounding the arc tube, so that air delivered from a cooling fan can flow in a direction along the circumference of the cylindrical shape of the air guide member
Implementation Method 2
an air outlet port is formed in an area of the air guide member where channels for guiding air toward the respective openings are not provided, through which port the air heated by the light emission portion and the like is discharged to the outside
Data Source
AI summary
In one embodiment, a light source device includes a tubular body disposed in the front side of a reflection mirror in the light emission direction and surrounding an arc tube. A pair of ducts connects with the tubular body and are provided with a first channel and a second channel to guide air. A channel switching mechanism allows air to flow through the first channel or the second channel. The tubular body includes a pair of communicating ports configured to supply air flowing through the first channel and the second channel toward the light emission portion. The pair of communicating ports are disposed on a virtual line passing through the center line of the arc tube and crossing the vertical direction and the horizontal direction as viewed in a direction along the center line.