Uniform LED Lamp Light Guide Column Refraction
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Solution Overview
Problem
Conventional LED bulbs suffer from non-uniform light emission due to insufficient illumination angles, leading to reduced lateral light brightness and potential shadowing by the lamp holder.
Innovation Solution
A uniform light emitting lamp structure utilizing a light guide column with different refractive indexes and a critical plane, which refracts and reflects light to increase the illumination angle, combined with support wings and additional LED sources to ensure even light distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a conventional LED bulb structure is used, then the LED light source can be installed on the circuit board, but the illumination angle is insufficient and lateral light brightness drops significantly
Solution Approach 1:
The patent introduces a light guide column as an intermediary component between the LED light source and the environment. This light guide column with specific refractive index and critical plane structure mediates the light propagation, enabling light to exit not only in the forward direction but also in lateral and rear directions, thereby solving the insufficient illumination angle problem while maintaining lateral light brightness
2Illumination intensity
If the LED light source is installed at the planar portion, then the circuit board can be electrically coupled, but the lamp holder blocks light and produces shadow
Solution Approach 1:
The patent changes the light emission from a single forward dimension to multiple dimensions by using the light guide column's critical plane. This enables light to propagate in forward, lateral, and rear directions simultaneously, effectively eliminating the shadow problem caused by the lamp holder blocking forward-only light
3Use of energy by moving object
If a high-power LED chip is used, then the power consumption is reduced, but a large quantity of heat is generated
Solution Approach 1:
The patent changes the optical parameters (refractive index, critical plane angle) of the light guide column to optimize light extraction efficiency. This allows for more uniform light distribution which indirectly helps with thermal management by reducing hot spots, though the primary heat dissipation is handled by the aluminum lamp holder structure
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 achieves a uniform light emitting effect by directing light towards the front, lateral, and rear sides of the lamp holder, enhancing brightness and reducing shadows.
Implementation Method 1
a portion of light is exited from the critical plane of the light guide column through a refraction and a reflection
Implementation Method 2
a portion of light is exited from the critical plane of the light guide column through a refraction and a reflection
Data Source
AI summary
The present invention discloses a uniform light emitting lamp structure including a lamp holder, an electric connection portion and a planar portion disposed on both end surfaces of the lamp holder respectively, and the planar portion includes a circuit board electrically coupled to the electric connection portion. The lamp structure further includes an LED light source, a lamp cover and a light guide column with a refractive index n1. After the light of the LED light source is projected from an environmental medium with a refractive index n2 to the light guide column, a portion of the light is reflected from the critical plane in a direction corresponding to the lamp holder through reflections and refractions, such that the light of the LED light source is projected in the environmental medium to achieve the uniform light emitting effect.