Comb-Shaped Wiring Board for Gapless Light Emitting Module Interconnection
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Solution Overview
Problem
Existing light emitting devices with closely arranged modules face challenges in connecting modules without gaps, limiting design freedom and requiring connectors, which complicates electrical connections and heat dissipation.
Innovation Solution
A light emitting device comprising a plurality of modules, a frame, and a flexible comb-shaped wiring board that connects modules in series or parallel, allowing for easy electrical connections and efficient heat dissipation through slit parts with heat-dissipating plates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If light emitting modules are arranged without gaps by bringing side surfaces into contact, then space utilization is improved, but connectors cannot be accommodated and design freedom is reduced
Solution Approach 1:
The patent merges the connector function with the wiring board itself. The comb-shaped wiring board has teeth that extend between adjacent light emitting modules, allowing electrical connections to be made through the gaps without requiring separate connectors. This integration eliminates the need for additional connector components while maintaining close module spacing.
Solution Approach 2:
The wiring board acts as an intermediary element that bridges adjacent light emitting modules. The comb teeth extend into the gaps between modules to establish electrical connections, allowing modules to be closely spaced while still providing necessary connectivity without direct side-surface contact.
2Reliability
If connectors are used to electrically connect light emitting modules, then electrical connections are established, but device complexity increases and heat dissipation is compromised
Solution Approach 1:
The patent combines the electrical connection function with the existing wiring board structure. The comb-shaped wiring board integrates connection terminals directly into its teeth, eliminating the need for separate connector components. This reduces device complexity while maintaining reliable electrical connections between modules.
Solution Approach 2:
The wiring board serves multiple functions: it provides electrical connections between modules, acts as a structural support element, and facilitates heat dissipation through its metal construction. This multi-functionality eliminates the need for dedicated connector components, reducing overall device complexity.
3Reliability
If connectors are used for module connections, then electrical connections are made, but heat dissipation efficiency is reduced
Solution Approach 1:
The patent merges the electrical connection function with heat dissipation functionality in the wiring board. The metal wiring board with comb teeth provides both electrical connectivity and thermal management by conducting heat away from the light emitting modules through its extensive surface area and direct contact with module terminals.
Solution Approach 2:
The wiring board serves as both an electrical connector and a heat sink. Its metal construction and extensive surface area allow it to efficiently conduct and dissipate heat from the light emitting modules while simultaneously providing electrical connections, eliminating the need for separate connector components that would impede heat flow.
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 high freedom of design for module connections and improved heat dissipation by eliminating the need for connectors and allowing modules to be arranged closely without gaps, while maintaining reliable electrical connections and efficient heat management.
Implementation Method 1
The wiring board has a comb shape that includes a plurality of comb-tooth portions extending in the row or column direction of the matrix arrangement of the plurality of light emitting modules. The comb-tooth portions include an electrically-conductive pattern. The anode-side and cathode-side terminals of the plurality of light emitting modules are connected to the electrically-conductive pattern of the comb-tooth portions of the wiring board.
Implementation Method 2
The wiring board includes a plurality of slit parts extending in the row or column direction of the matrix arrangement of the plurality of light emitting modules. The heat-dissipating plates or parts of a heat-dissipating plate are arranged in the plurality of slit parts.
Data Source
AI summary
A light emitting device according to the present invention includes a flexible wiring board that electrically connects light emitting modules to each other. The light emitting modules include anode-side and cathode-side terminals that are arranged on their back surface and are connected to light emitting elements, which are included in their light emitting module and connected to each other in series or in parallel, in order to supply currents to light emitting elements. The wiring board has a comb shape that includes a number of comb-tooth portions extending in row or column direction of the matrix arrangement of the light emitting modules. The comb-tooth portions include an electrically-conductive pattern. The anode-side and cathode-side terminals of light emitting modules are connected to the electrically-conductive pattern of the comb-tooth portions of the wiring board.