Disinfection Lighting Device Segmented Light Source UV Transmission
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Solution Overview
Problem
Existing disinfection lighting devices with photocatalysis functionality face limitations in the transmission of violet or UV light, which adversely affects the efficiency of the photocatalysis process for environmental disinfection.
Innovation Solution
A disinfection lighting device is designed with a first light source for emitting visible light and a second light source for emitting violet and/or ultraviolet light, where the second light source is positioned outside the envelope in a recess, and combined with a photocatalytic layer to enhance disinfection efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the violet or UV light source is enclosed by an envelope made of photocatalytic material, then the disinfection functionality is provided, but the transmission of violet or UV light is limited in intensity which adversely affects the efficiency of the photocatalysis process
Solution Approach 1:
The lighting device is segmented into two distinct light sources: a first light source (visible light) enclosed within the envelope, and a second light source (violet/UV light) positioned outside the envelope in a recess. This segmentation allows each light source to fulfill its specific function without interfering with the other, resolving the contradiction between providing disinfection functionality and maintaining photocatalysis efficiency.
Solution Approach 2:
The envelope is designed with a recess that creates a localized region where the second light source (violet/UV) can emit light directly onto the photocatalytic material without being filtered or attenuated by the envelope material. This local modification allows high-intensity violet/UV light to reach the photocatalytic layer efficiently, maintaining high photocatalysis efficiency while the rest of the envelope continues to provide the necessary structural enclosure and visible light transmission.
2Device complexity
If the second light source is positioned inside the envelope, then the structure is simplified, but the transmission and interaction of violet/UV light with photocatalytic material is reduced
Solution Approach 1:
The second light source is repositioned from the internal three-dimensional space to an external position in a recess on the envelope surface. This dimensional change allows the violet/UV light to interact directly with the photocatalytic material on the envelope outer surface, maximizing light transmission efficiency and photocatalytic activation while maintaining a compact overall device 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
This configuration improves the efficiency of the photocatalysis process by allowing more effective transmission and interaction of violet and/or UV light with the photocatalytic material, thereby enhancing the disinfection capabilities of the lighting device.
Implementation Method 1
the photocatalysis process is activated by violet and ultraviolet (UV) radiation can be effectively used to inactivate microorganisms. In such a photocatalysis process, ionized chemical species can be generated for deactivating fungi, viruses, and/or bacteria.
Implementation Method 2
The second light source is adapted for, in operation, emitting violet and/or ultraviolet (UV) light
Implementation Method 3
The first light source is adapted for, in operation, emitting visible light
Implementation Method 4
violet light emitted on the will allow it to break down the microbial load (fungi, viruses, and/or bacteria) present in any environment
Data Source
Figure 1(a)~1(b)
Figure 2
Figure 3
AI summary
The present invention generally relates to the field of a lighting device, and in particular to a disinfection lighting device (100) that is suitable for providing illumination as well as environmental disinfection functionality that is principally enabled by the photocatalysis process. The disinfection lighting device (100) comprises a first light source (101), a second light source (102), and an envelope (103). The first light source (101) is 5adapted for, in operation, emitting visible light (001). The second light source (102) is adapted for, in operation, emitting violet and/or ultraviolet (UV) light (002). The first light source (101) is arranged inside the said envelope (103). The envelope (103) comprises a recess (104) and the second light source (102) is arranged outside the said envelope (103) and in the said recess (104).