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Researchers Submit Patent Application, "Led Lamp Structure with Heat Sink", for Approval

June 18, 2014



By a News Reporter-Staff News Editor at Electronics Newsweekly -- From Washington, D.C., VerticalNews journalists report that a patent application by the inventors Chen, Ming-Hung (Zhudong Town, TW); Hsieh, Kun-Yang (Zhudong Town, TW); Lin, Shin-Chieh (Zhudong Town, TW), filed on January 9, 2013, was made available online on June 5, 2014.

The patent's assignee is Helio Optoelectronics Corporation.

News editors obtained the following quote from the background information supplied by the inventors: "The present invention relates to a light-emitting diode lamp structure and, more particularly, to a light-emitting diode lamp structure with a heat sink.

"Thanks to the increase in brightness and the continuous improvement of light extraction efficiency, light-emitting diodes (LEDs) have in recent years been massively used in lighting-related applications. In fact, most of the traditional light bulbs or cold-cathode tubes required in the backlights of handheld devices, the backlights of liquid crystal displays of various sizes, the light sources of projectors, and so on have been replaced by LEDs. In addition, the advancements in color temperature control, frequency stabilization, and light color mixing efficiency have made it possible to use LEDs extensively in everyday lighting.

"Now that LEDs are in wide use, it is highly desirable to further increase their light extraction efficiency by effective light beam concentration and to improve heat dissipation from LEDs, with a view to saving more energy and expanding the applications of LEDs.

"In today's LED lighting technology, the design of reflection cups (e.g., reflective lamp cups or lampshades) is a major subject of innovation. However, most lampshade design efforts are directed toward esthetic novelty and based on commercial considerations, with little attention paid to the planning of light refraction. As a large portion of the light emitted by an LED light source scatters without being reflected or concentrated by its lampshade, which leads to inefficient use of energy, it is imperative for lampshade or lamp designers to develop a highly efficient lampshade which can direct more light to the light exit of an LED lamp, and effectively concentrate the portion of light that is otherwise not reflected or concentrated by the lampshade, and thereby increase the overall light extraction efficiency of the LED light source. It is also important to provide more efficient heat dissipation so that the service life of an LED light source can be extended."

As a supplement to the background information on this patent application, VerticalNews correspondents also obtained the inventors' summary information for this patent application: "It is an object of the present invention to provide an LED lamp structure having a heat sink, wherein the LED lamp structure includes a reflection cup, an LED module, and a cover, in addition to the heat sink, and wherein the LED lamp structure is efficient not only in light extraction but also in heat dissipation.

"To achieve the above object, the present invention provides an LED lamp structure having a heat sink, wherein the LED lamp structure includes: a reflection cup having an inside bottom surface, a reflection surface, an outside bottom surface, and a light exit; an LED module thermally conductively and fixedly provided on the inside bottom surface; a cover covering the LED module; and the heat sink, which is thermally conductively connected to the outside bottom surface.

"Implementation of the present invention at least provides the following advantageous effects:

"1. The provision of the reflection cup, which is formed of a highly reflective material or coated with a highly reflective plated film, increases light output and consequently lighting efficiency.

"2. The provision of the heat sink enhances heat dissipation efficiency and thereby helps extend the service life of the LED lamp structure.

"The features and advantages of present invention are described in detail hereunder to enable persons skilled in the art to understand and implement the disclosure of the present invention and readily apprehend objectives and advantages of the present invention with references made to the disclosure contained in the specification, the claims, and accompanying drawings.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS.

"FIG. 1 is a sectional view of an LED lamp structure with a heat sink according to an embodiment of the present invention.

"FIG. 2A is a perspective view of a reflection cup according to the embodiment shown in FIG. 1.

"FIG. 2B is a sectional view of the reflection cup shown in FIG. 2A.

"FIG. 3 is a sectional view of an LED lamp structure with a heat sink according to another embodiment of the present invention.

"FIG. 4 shows how LED chips are arranged in an LED module according to an embodiment of the present invention.

"FIG. 5A is a sectional view of a cover according to an embodiment of the present invention.

"FIG. 5B is a sectional view of a cover according to another embodiment of the present invention.

"FIG. 6 is a sectional view of an LED lamp structure with a heat sink according to still another embodiment of the present invention.

"FIG. 7 is a sectional view of an LED lamp structure with a heat sink according to yet another embodiment of the present invention."

For additional information on this patent application, see: Chen, Ming-Hung; Hsieh, Kun-Yang; Lin, Shin-Chieh. Led Lamp Structure with Heat Sink. Filed January 9, 2013 and posted June 5, 2014. Patent URL: http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&u=%2Fnetahtml%2FPTO%2Fsearch-adv.html&r=4932&p=99&f=G&l=50&d=PG01&S1=20140529.PD.&OS=PD/20140529&RS=PD/20140529

Keywords for this news article include: Light-emitting Diode, Helio Optoelectronics Corporation.

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Source: Electronics Newsweekly


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