1. Field of the Invention
The invention relates in general to light modules and in particular to light modules with high heat dissipation efficiency.
2. Description of the Related Art
With the progress of semiconductor and electronic technologies, traditional Cathode Ray Tube (CRT) displays have increasingly been replaced by flat panel displays having small size and low radiation. Generally, conventional flat panel displays use Cold Cathode Fluorescent Lamps (CCFL) as backlight. However, CCFLs provide only a short lifetime and present difficulties when facilitating miniaturization.
As a result of the aforementioned disadvantages, LEDs have been increasingly applied rather than the conventional CCFL as a light source for the flat panel display. Specifically, since excessive high temperature can adversely reduce illumination and lifetime of LEDs, heat dissipation becomes critical.
Light modules are provided. A light module includes a circuit board, a lighting element electrically connected to the circuit board, and a first thermal plate. The circuit board has a through hole communicating a first side and a second side thereof. The lighting element is disposed on the first side of the circuit board and located corresponding to the through hole. The first thermal plate is disposed on the second side of the circuit board, opposite to the first side, and comprises a first protrusion extending through the through hole and connecting the lighting element.
The invention can be more fully understood by reading the subsequent detailed description and examples with references made to the accompanying drawings, wherein:
Referring to
As shown in
In this embodiment, the circuit board 10 has a plurality of through holes 13 communicating with the first and second sides 11 and 12, and correspondingly, the first thermal plate 30 has a plurality of first protrusions 31 projecting toward the lighting elements 20 via the through holes 13. As shown in
Referring to
As shown in
Light modules are provided according to the embodiments. A light module comprises a circuit board, a lighting element disposed on a first side of the circuit board, and a thermal plate disposed on a second side of the circuit board, opposite to the first side. The circuit board has at least one through hole with a protrusion of a thermal plate extending therethrough, wherein the protrusion connects the lighting element to dissipate heat via the thermal plate, preventing failure of the lighting element or circuit board due to high temperature.
While the invention has been described by way of example and in terms of preferred embodiment, it is to be understood that the invention is not limited thereto. To the contrary, it is intended to cover various modifications and similar arrangements (as would be apparent to those skilled in the art). Therefore, the scope of the appended claims should be accorded the broadest interpretation to encompass all such modifications and similar arrangements.
Number | Date | Country | Kind |
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96108882 A | Mar 2007 | TW | national |
Number | Name | Date | Kind |
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5825625 | Esterberg et al. | Oct 1998 | A |
6874810 | Soderquist | Apr 2005 | B2 |
20040264195 | Chang et al. | Dec 2004 | A1 |
Number | Date | Country |
---|---|---|
202005012652 | Nov 2005 | DE |
102004016847 | Dec 2005 | DE |
102005056872 | Jun 2006 | DE |
M291085 | May 2006 | TW |
M292161 | Jun 2006 | TW |