LED Lighting Apparatus with Sloped Reflective Case
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Solution Overview
Problem
Existing LED surface-lighting apparatuses suffer from low light efficiency due to significant light loss, requiring excessive LEDs, leading to high power consumption and shortened lifespan, and uneven illumination when power is reduced, along with challenges in heat dissipation and dazzle prevention.
Innovation Solution
An LED lighting apparatus with a case part that provides a reflective space, featuring a sloped upper edge and bent lateral surfaces to reflect and diffuse light internally, eliminating the need for diffusion plates and allowing for reduced LED usage, improved heat dissipation through air convection, and adjustable installation for uniform illumination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a diffusion plate is used to prevent light dazzle, then light uniformity is improved, but light efficiency deteriorates due to significant light loss
Solution Approach 1:
The patent removes the diffusion plate from the lighting system entirely. Instead of using a diffusion plate to uniformize light, the invention uses the case part with reflective inner surfaces to redirect and distribute light, thereby eliminating the light loss associated with diffusion plates while maintaining light uniformity.
Solution Approach 2:
The patent introduces the case part with reflective surfaces as an intermediary between the LEDs and the environment. The reflective inner surfaces of the case part act as a mediator to redirect and diffuse light uniformly without the light absorption losses inherent in diffusion plates.
2Illumination intensity
If the number of LEDs is increased to compensate for light loss, then illumination intensity is improved, but power consumption increases
Solution Approach 1:
The patent converts the harmful light loss that occurs with diffusion plates into a beneficial system where the case part's reflective surfaces redirect light that would otherwise be lost. This allows the system to maintain illumination intensity with fewer LEDs, reducing power consumption.
3Illumination intensity
If the number of LEDs is increased to maintain sufficient illumination, then light output is improved, but heat dissipation becomes more difficult
Solution Approach 1:
By removing the diffusion plate and reducing the number of LEDs needed, the patent extracts the excess heat-generating components from the system. Fewer LEDs produce less total heat, making heat dissipation more manageable.
4Illumination intensity
If the case depth is increased to provide adequate reflective space, then light diffusion is improved, but device size increases
Solution Approach 1:
The case part serves multiple functions simultaneously: it provides structural housing, creates the reflective space for light diffusion, and acts as the light redirecting surface itself through its inner reflective surfaces. This multi-functionality allows adequate light diffusion without requiring excessive case depth.
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 solution enhances light efficiency, reduces power consumption, extends LED lifespan, and provides uniform illumination without diffusion plates, enabling easy replacement and installation, while minimizing heat-related issues and dazzle, and allowing for flexible intensity adjustment.
Implementation Method 1
a reflective part which is located in an upper center portion of the inside of the case part so as to reflect the light of the LEDs and enables reflection and diffusion of light within the reflective space provided from the case part
Implementation Method 2
a case part which covers a residual part, excluding a light-emitting surface, to provide a reflective space and has a predetermined depth, in which an upper edge of the inside thereof has a slope; a receiving surface in which a lateral surface portion of the case part is bent toward the inside of the case
Data Source
AI summary
An LED lighting apparatus is provided. The LED lighting apparatus includes a case part which covers a residual part, excluding a light-emitting surface, to provide a reflective space and has a predetermined depth and in which an upper edge of the inside thereof has a slope. Further, a receiving surface has a lateral surface portion of the case part that is bent toward the inside of the case. A substrate is fixed on the receiving surface and a plurality of LEDs are provided. A reflective part located in an upper center portion of the inside of the case part reflects the light of the LEDs and enables reflection and diffusion of light within the reflective space provided from the case part.