Projector Lighting Device Sliding Circulator
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Solution Overview
Problem
Existing projector designs require additional space and mechanisms to accommodate the fan base's turning mechanism, limiting the structure and increasing the projector's size due to the need for a space to turn the fan base and support the lamp unit's cooling system.
Innovation Solution
A lighting device configuration where the light source device unit slides between two positions, with a circulating device that includes a moving section and an urging section to align the air flow direction with the sliding direction of the unit, reducing the gap between air flow ports and preventing air leaks, allowing effective cooling without the need for additional space or mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the fan base is configured to turn about an axial supporting section to align air flow with the light source, then cooling effectiveness is improved, but the projector size increases and structural complexity increases due to the turning mechanism space requirement
Solution Approach 1:
The patent applies dynamics by making the circulating device movable rather than fixed. The circulating device can change its position between a first position (when the light source device unit is at the first position) and a second position (when the light source device unit is at the second position), allowing the air flow direction to dynamically align with the light source without requiring a large turning mechanism space.
Solution Approach 2:
The circulating device is nested within the housing structure, specifically supported by the outflow section. The moving section of the circulating device is disposed within the space between the light source device unit and the outflow section, utilizing existing structural spaces rather than requiring additional external space for the turning mechanism.
2Temperature
If the fan base is configured to turn about an axial supporting section to align air flow with the light source, then cooling effectiveness is improved, but device complexity increases due to the turning mechanism
Solution Approach 1:
The circulating device is designed to move between two positions corresponding to the light source device unit's positions, eliminating the need for complex continuous turning mechanisms. The urging section provides automatic positioning force to maintain alignment, simplifying the control system while maintaining cooling effectiveness.
Solution Approach 2:
The urging section automatically urges the moving section of the circulating device toward the outflow section, providing self-alignment functionality. This eliminates the need for external control mechanisms or complex actuation systems, allowing the cooling system to self-adjust and maintain proper air flow alignment.
3Ease of operation
If the light source device unit slides from the first position to the second position, then ease of light source replacement is improved, but air flow alignment and cooling effectiveness deteriorate due to gap formation between air flow ports
Solution Approach 1:
The circulating device is designed to dynamically adjust its position based on the light source device unit's position. When the light source device unit slides to the second position, the circulating device also moves to its second position, maintaining continuous alignment between the outflow port and the inflow port throughout the sliding process, preventing gap formation and maintaining cooling effectiveness.
Solution Approach 2:
The moving section of the circulating device acts as an intermediary that maintains the air flow path alignment between the outflow section and the light source device unit during sliding. The ventilation hole in the moving section ensures continuous air flow communication, preventing air leaks and maintaining cooling effectiveness during the sliding operation.
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 enables effective cooling of the light source while minimizing the projector's size and structural limitations, allowing for longer image projection periods and improved air flow management.
Implementation Method 1
a cooling device including a cooling fan and an outflow section having formed therein an outflow port from which the air emitted from the cooling fan flows out
Implementation Method 2
an urging section configured to urge, in the second direction, the moving section in a direction away from the light source device unit or the outflow section that supports the circulating device
Data Source
AI summary
A lighting device includes a supporting section configured to support a light source device unit, a fan housing section in which an outflow port for causing the air discharged by a cooling fan to flow out is formed, and a circulating device supported by the light source device unit. The outflow port is opened in a direction along a second direction. The light source device unit includes an inflow port opened to a side opposed to the outflow port and a channel for leading the air flowing in from the inflow port to a light source. The circulating device includes a moving section disposed between the light source device unit and the fan housing section in a predetermined position, a ventilation hole for causing the outflow port and the inflow port to communicate being formed in the moving section, and an urging section configured to urge the moving section.