Light Emitting Device Wire Protection via Flow Path
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Solution Overview
Problem
Existing light emitting devices with wires disposed outward from the base plate in the width direction are prone to damage when the device falls sideways, as the wires are exposed and vulnerable to injury during such incidents.
Innovation Solution
The light emitting device incorporates a base plate formed from a metal block with a flow path on its opposite side to direct air flow, which cools the device and positions the wires inside the flow path to minimize exposure and damage when the device falls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If wires are disposed outward from the base plate in the width direction, then wiring is simplified, but wire damage occurs when the device falls sideways
Solution Approach 1:
The patent changes the spatial arrangement of wires from a horizontal disposition (outward from the base plate in the width direction) to a vertical disposition (inside the flow path, extending in the height direction). This dimensional change allows the wires to be protected by the base plate structure while maintaining wiring simplicity.
Solution Approach 2:
The flow path structure acts as an intermediary protective element. By positioning wires inside the flow path, the base plate and flow path structure together form a protective enclosure that shields the wires from damage during sideways falls, while the flow path continues to perform its cooling function.
2Reliability
If wires are positioned inside the flow path, then wire protection is improved, but air flow may be obstructed
Solution Approach 1:
The patent employs a flat cable with flexible structure that can be disposed inside the flow path without significantly obstructing air flow. The flexible nature of the flat cable allows it to conform to the flow path space while maintaining wire connectivity and protecting the wires from damage.
Solution Approach 2:
The wires are arranged in the height direction (vertical dimension) within the flow path, rather than extending horizontally. This vertical arrangement minimizes interference with the horizontal air flow through the flow path, allowing both wire protection and efficient cooling to be achieved simultaneously.
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 reduces damage to the wires and maintains image quality by managing heat dissipation and thermal expansion, while simplifying the wiring and air feeding mechanisms.
Implementation Method 1
a flow path disposed on a side of the base plate opposite to a side facing the light emitting units to feed air therethrough in the first direction
Data Source
AI summary
A light emitting device includes: a base plate extending in a first direction; a plurality of light emitting units arranged over a front surface of the base plate while being shifted from each other in the first direction, and each including a support body extending in the first direction and a plurality of light sources supported on the support body while being arranged in the first direction; a flow path disposed on a side of the base plate opposite to a side facing the light emitting units to feed air therethrough in the first direction; and a wire electrically connected to at least one of the plurality of the light emitting units, and disposed inside the flow path.