1. Field of the Invention
The present invention relates generally to an improved LED structure with a photocatalytic agent. More particularly it involves an LED structure that causes a reaction of the photocatalytic agent that achieves disinfection, deodorization, and mildewproofing functions.
2. Description of the Prior Art
A photocatalytic agent is a catalyst that is related to light and transformed by light energy, such transformation is a sort of chemistry. As a matter of fact, titanium dioxide (TiO2) is one catalyst that achieves the transformation. Titanium dioxide itself is an activator with the characteristics of hyper oxidation and stability. A photocatalytic agent such as titanium dioxide is powerful enough to
A photocatalyst that promotes photosynthesis similar to a plant's photosynthesis is produced after titanium dioxide absorbs ultraviolet ray from sunlight or a conventional LED. The oxidation from the photocatalyst easily reduces germs in air by 99.997%.
The photocatalytic agent of the invention performs the three functions of disinfection, deodorization, and mildewproof, which are described as below:
According to aforesaid, the photocatalytic agent has the functions of disinfection, deodorization, and mildewproofing, but so far in the art it has not been disclosed in conventional LEDs. The total contact surface area of a conventional LED is smaller than an improved LED structure as the proposed LED assembly. The inventor has developed an improved LED structure to solve the shortcomings in the prior art.
Presently the photocatalytic agent is only applied to conventional light bulbs. And the total contact surface area of a conventional LED is smaller than an improved LED structure as an LED assembly, which can have a plurality of LEDs. As the general purpose of the conventional LED is solid state lighting, the surface area of a conventional LED contacting air is very limited, and the corresponding oxidation capability from the conventional LED is limited and less than the desired amount of disinfection, deodorization, and mildewproofing.
The main objective of the present invention is to provide an improved LED structure, not only for solid state light but also for disinfection, deodorization, and mildewproofing functions. Moreover,
The volume of an LED is smaller so as to be convenient light bulbs to install. Comparing the present invention to a conventional LED with same size, the present invention can increase in the total contact surface area in contact with air, so that the functions of disinfection, deodorization, and mildewproofing can be effectively achieved.
Other and further features, advantages, and benefits of the invention will become apparent in the following description taken in conjunction with the following drawings. It is to be understood that the foregoing general description and following detailed description are exemplary and explanatory but are not to be restrictive of the invention. The accompanying drawings are
The objects, spirits, and advantages of the preferred embodiments of the present invention will be readily understood by the accompanying drawings and detailed descriptions, wherein:
The present invention includes an improved LED structure, which has a photocatalytic agent on its surface for the purpose of disinfection, deodorization, and mildewproofing functions. With reference to
With reference to
The volume of the LED structure of the present invention is small compared to conventional ultraviolet light bulbs, in order to
Public places of entertainment as KTV, liquor shops, etc. accommodating guests smoking cigarettes, drinking wine, etc., may have disgusting smells caused by aforesaid behaviors. Using the present invention in such places may solve the worst conditions; and, moreover, the present invention can be in the form of Christmas lights, which beautify the environment as well.
In the illustrations of
The TiO2-containing coatings were sprayed on glass surfaces, forming thin films when dried. Several pathogenic bacteria were suspended in glycerol solution, and then were smeared on the films and then irradiated with fluorescent light. The Li's [Ref.] results s indicated that the nano-crystalline TiO2 containing coating have substantial bactericidal ability against Escherichia coli BCRC11634, Staphylococcus aureus BCRC10451, Pseudomonas aeruginosa BCRC12450, Enterococcus faecium BCRC10067 and Candida albicans BCRC20511.
There is a minor difference between the coatings with different thicknesses (layers), it indicates that the key point of bactericidal efficacy is not the thickness but the surface of the coating. Although the TiO2 containing coatings are sprayed on the surface with 1, 2 or 3-layer, the surface areas of TiO2 coating were is unchanged and the bactericidal efficacy are the same. And from
Reference: Mr. Lien-min Li, “INFLUENCES OF PREPARATION CONDITIONS ON BACTERICIDAL EFFICACY OF TIO2 CONTAINING COATING”, Thesis for Master of Science, Department of Bioengineering, Tatung University, TAIWAN, June 2004.
Although this invention has been disclosed and illustrated with reference to particular embodiments, the principles involved are susceptible for use in numerous other embodiments that will be apparent to persons skilled in the art. This invention is, therefore, to be limited only as indicated by the scope of the appended claims.
The present application is a continuation-in-part of U.S. patent application Ser. No. 11/852,461, filed on Sep. 10, 2007, titled LED Structure, listing Liann-Be Chang, Chin-Huai Young and Yu-Lin Lee as inventors. That application is deemed to be incorporated herein in its entirety.
Number | Date | Country | |
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Parent | 11852461 | Sep 2007 | US |
Child | 12762635 | US |