Lighting Device Frame with Phosphor Sealing Resin
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Solution Overview
Problem
Current lighting devices with light-emitting elements and phosphor layers face challenges in efficiently distributing and diffusing light emitted laterally, leading to variations in light output and potential exposure of phosphor layers to air, which affects their performance and longevity.
Innovation Solution
A lighting device design featuring a frame with phosphor layers surrounding the light-emitting element, where the frame's inner and outer surfaces are sealed with a light-transmitting resin, and optionally including a diffuser, to facilitate even light transmission and diffusion laterally, while protecting the phosphor layers from air exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If phosphor layers are exposed to air, then manufacturing process is simplified, but phosphor layer lifespan is reduced due to degradation
Solution Approach 1:
The patent applies the inert atmosphere principle by using a light-transmitting resin to create a protective environment around the phosphor layers. This resin encapsulation prevents air contact with the phosphor, eliminating oxidation and degradation while maintaining manufacturing simplicity. The resin acts as a barrier that isolates the phosphor from harmful atmospheric elements.
2Ease of manufacture
If light-emitting element is sealed with light-transmitting resin only, then manufacturing is simple, but light distribution uniformity is poor
Solution Approach 1:
The patent applies composite materials by combining the light-transmitting resin with a diffuser material. This composite structure maintains the sealing function of the resin while adding the light-diffusing capability of the diffuser material. The combination achieves uniform light distribution without complicating the manufacturing process, as the diffuser is integrated into the existing resin sealing structure.
3Device complexity
If phosphor layers are not protected, then device structure is simpler, but light emission variations increase
Solution Approach 1:
The patent applies the intermediary principle by introducing a diffuser as a mediating layer between the light-transmitting resin and the phosphor layers. This diffuser intermediary uniformly distributes the light emitted by the phosphor, reducing variations in light emission. The diffuser acts as a buffer that equalizes light intensity without adding significant structural complexity to the device.
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 enhances light distribution uniformity, suppresses variations in light emission, and extends the lifespan of the phosphor layers by preventing exposure to air, resulting in improved lighting performance and reliability.
Implementation Method 1
a light-transmitting resin arranged in the quadrilateral area demarcated by the inner side surface of the frame and sealing the light-emitting element that is positioned inside the quadrilateral area, and the light-transmitting resin being further provided in contact with the outer side surface of the frame
Implementation Method 2
the light-transmitting resin provided in contact with the outer side surface of the frame may include a diffuser
Implementation Method 3
a frame including a phosphor that can be excited by light emitted from the light-emitting element
Data Source
AI summary
In a first aspect of the present invention, a lighting device includes a light-emitting element, a frame including a phosphor that can be excited by light emitted from the light-emitting element, the frame having an inner side surface surrounding the light-emitting element and an outer side surface being positioned outside the inner side surface that demarcates a quadrilateral area, and a light-transmitting resin arranged in the quadrilateral area demarcated by the inner side surface of the frame and sealing the light-emitting element that is positioned inside the quadrilateral area, and the light-transmitting resin being further provided in contact with an outer side surface of the frame. In some embodiments, it is disclosed that the light-transmitting resin provided in contact with the outer side surface of the frame may include a diffuser.