Radial LED Lamp with Inward-Facing Back Surfaces for Compact High Power
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Solution Overview
Problem
There is currently no LED lamp that can effectively replace high output lamps like HID lamps in terms of power and performance.
Innovation Solution
A lamp design featuring multiple flat plate type light source units arranged around an axial line with their back surfaces facing inward, supported by a structure that includes a storage body for lead wires and heat radiation fins, allowing for efficient cooling and high output power without increasing the lamp's size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If multiple light source units are arranged around an axial line to increase output power, then the luminance and power output improve, but the lamp size increases
Solution Approach 1:
The patent arranges multiple flat plate type light source units around an axial line in a radial configuration, transitioning from a linear or planar arrangement to a three-dimensional radial structure. This dimensional change allows multiple light sources to be compactly positioned around a central axis, increasing total luminous output without proportionally increasing the overall lamp volume.
Solution Approach 2:
The light source units are positioned with their back surfaces facing inward toward the axial line, creating a nested configuration where the light-emitting surfaces face outward. This nesting arrangement allows the light sources to be closely packed around the central axis, maximizing space utilization and maintaining a compact lamp structure while accommodating multiple high-power light sources.
2Illumination intensity
If high power light sources are used to achieve HID lamp output, then the luminance improves, but the heat radiation becomes more difficult
Solution Approach 1:
The patent provides dedicated cooling spaces at the back surface side of each light source unit's base member, creating localized heat dissipation zones for each individual light source. This local quality approach ensures that heat from each high-power LED is efficiently managed at its source, preventing heat accumulation that would otherwise limit the luminance output.
Solution Approach 2:
The design extracts the heat radiation function from the light source units by providing separate cooling spaces and air flow paths. The cooling spaces are positioned at the back surfaces of the base members, allowing heat to be extracted from each light source independently through convection and conduction, enabling the light sources to operate at high power levels without overheating.
3Temperature
If lead wires are exposed to the air flow space for cooling, then the heat dissipation improves, but the waterproofing becomes compromised
Solution Approach 1:
The patent segments the lamp structure into distinct functional zones: light source units with their base members, dedicated cooling spaces at the back surfaces, and a central storage body. The lead wires are routed through the storage body, separating them from the cooling air flow paths. This segmentation allows heat dissipation to occur in the cooling spaces without exposing the electrical components to moisture, maintaining both thermal performance and waterproofing.
Solution Approach 2:
The storage body acts as an intermediary structure that houses the lead wires and electrical connections, isolating them from the cooling air flow spaces. This intermediary component enables the cooling function to operate effectively with exposed air flow paths while simultaneously protecting the electrical system from moisture ingress, resolving the conflict between heat dissipation and waterproofing requirements.
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 design achieves high luminance and efficient heat radiation, enabling the LED lamp to serve as a suitable alternative to HID lamps in terms of brightness and power while maintaining a compact size.
Implementation Method 1
heat from the light emitting element(s) and the mount board can be efficiently radiated
Implementation Method 2
a space through which air flows is provided at the back surface side of each base member
Data Source
AI summary
A lamp achieves high output power like an HID lamp by using a light emitting element(s) as a light source. A mount board having LED mounted thereon is provided on the surface of a base member, and there are provided plural flat plate type light source units arranged around an axial line while the back surfaces thereof faces inwards, and a support member provided on the axial line. The plural light source units are supported on the support member, and a space through which air flows is provided at the back surface side of each base member.