LED Light Apparatus Uniform Cooling via Partitioned Air Channels
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Light emitting diodes (LEDs) used in light emitting apparatuses for curing ultraviolet curable ink generate significant heat, leading to decreased emission efficiency and lifespan, and uneven cooling results in irregular light distribution and curing issues when multiple LEDs are used in parallel configurations.
Innovation Solution
A light emitting apparatus design featuring a substrate with LEDs arranged in parallel, a heat dissipation unit with fins, a partition plate forming air channels, and a cooling fan to ensure uniform airflow and cooling, preventing the housing from overheating and maintaining consistent LED temperatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If multiple LEDs are disposed in parallel to increase light output, then the light emitting apparatus can cure larger areas or provide higher intensity, but the total heat generation increases and uniform cooling becomes difficult
Solution Approach 1:
The light source is divided into multiple independent LED modules arranged in parallel on a substrate. Each LED module can be independently cooled by airflow channels, allowing the system to provide high total light output while maintaining uniform temperature distribution across all LEDs through segmented cooling zones.
2Reliability
If a heat dissipation member is used to cool the LEDs, then the LED lifespan and emission efficiency are improved, but the housing becomes heated and components cannot be disposed in proximity, increasing overall size
Solution Approach 1:
A forced air cooling system using a fan and airflow channels is employed to dissipate heat from the LEDs. The airflow paths are designed to pass through or around the heat dissipation member, carrying away heat without requiring the housing itself to act as a heat sink, thus maintaining a compact apparatus size while ensuring reliable LED operation.
3Power
If the housing is designed to accommodate multiple LEDs and cooling systems, then the light emitting apparatus can provide sufficient curing power, but the overall size is increased
Solution Approach 1:
The housing structure is merged with the cooling system design, where the housing walls and internal structures serve dual purposes as both structural support and cooling airflow channels. The airflow paths are integrated into the housing geometry, eliminating the need for separate cooling chambers and reducing overall apparatus size while maintaining high curing power through multiple LEDs.
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 apparatus achieves uniform cooling of multiple LEDs, maintaining consistent light output and preventing overheating, allowing for a compact size and efficient operation by ensuring equal air flow and heat dissipation across all LEDs.
Implementation Method 1
a cooling fan which receives air from the outside, guides the air to the second air channel, and forms an airflow in the first direction in the second air channel
Implementation Method 2
a heat dissipation unit which has multiple heat radiation fins that are formed at predetermined intervals in the first direction, and is thermally coupled to a rear side of the substrate
Implementation Method 3
multiple heat radiation fins that are formed at predetermined intervals in the first direction
Data Source
AI summary
Provided is a small-sized light emitting apparatus having a configuration capable of uniformly cooling multiple LEDs. A light emitting apparatus, which emits linear light, includes: a light source unit which has multiple light sources that are disposed on a surface of a substrate in parallel in a first direction; a heat dissipation unit which has multiple heat radiation fins formed in the first direction, and is thermally coupled to a rear side of the substrate; a partition plate which forms a first air channel surrounding the multiple heat radiation fins; a housing which forms a second air channel between the housing and the partition plate; and a cooling fan which receives air from the outside, guides the air to the second air channel, and forms an airflow in the first direction.