Patent Grant
8079737
1. Field of the Invention
The present invention relates to a reflection-type light-emitting module, in particular, to a reflection-type light-emitting module with high heat-dissipating and high light-generating efficiency.
2. Description of Related Art
Before the invention of the light bulb, illuminating the world after the sun went down was a messy, arduous, hazardous task. It took a bunch of candles or torches to fully light up a good-sized room, and oil lamps, while fairly effective, tended to leave a residue of soot on anything in their general vicinity. With the invention of the light bulb and as the science of electricity progressed in the mid 1800s, the easy-to-use lighting technology was such an improvement over the old ways that the world never looked back.
Currently, the application of illuminating devices can be categorized into two fields. One such field is the construction industry, which includes all sorts of lighting systems adapted for private housing units, commercial buildings, and public transportation systems like highways and railways, and so on, so as to achieve objects of comfort, beautification, and safety. Another such field is commercial goods, which includes all sorts of light sources adapted for auto lamps, indoor lighting, and consumer electronics, etc. As in the year 2000, the largest demand for illuminating devices lays in the United State of America. Generally, the demand for illuminating devices is growing in a rapid path following the growth of global economy. Nevertheless, as environmental awareness also grows with the global economy, it is in great demand to have green lighting systems for enhancing environmental protection and energy conservation.
Hence, how to design a light-emitting module with high heat-dissipating and high light-generating efficiency is very important problem.
In view of the aforementioned issues, the present invention provides a reflection-type light-emitting module with high heat-dissipating and high light-generating efficiency. The present invention can generate high heat-dissipating efficiency (high heat-conducting efficiency) and high light-generating efficiency (high light utilization percent) by matching a heat pipe and a plurality of types of reflective structures.
To achieve the above-mentioned objectives, the present invention provides a reflection-type light-emitting module with high heat-dissipating and high light-generating efficiency, including: a reflection-type lampshade unit, a heat pipe unit, and a light-emitting unit. The reflection-type lampshade unit has an open casing, a receiving space formed in the open casing. A first reflective structure is disposed in the receiving space and on an inner surface of the open casing. The heat pipe unit is received in the receiving space and is disposed on the open casing. The light-emitting unit is disposed on the heat pipe unit, and the light-emitting unit has a light-emitting face facing the inner surface of the open casing.
Therefore, light beams generated by the light-emitting unit are reflected outside the reflection-type lampshade unit by using the first reflective structure, so that the present invention can generate high light-generating efficiency. Heat generated by the light-emitting unit can be transmitted to the reflection-type lampshade unit by using the heat pipe unit, so that the present invention can generate high heat-dissipating efficiency.
In order to further understand the techniques, means and effects the present invention provides for achieving the prescribed objectives, the following detailed descriptions and appended drawings are hereby referred, such that, through which, the purposes, features and aspects of the present invention can be thoroughly and concretely appreciated. However, the appended drawings are merely provided for reference and illustration, without any intention to be used for limiting the present invention.
Referring to
The reflection-type lampshade unit 1a has an open casing 10a, a receiving space 11a formed in the open casing 10a, and a first reflective structure 12a disposed in the receiving space 11a and on an inner surface of the open casing 10a. In addition, in the first embodiment, the open casing 10a has a cup shape with an opening, and the inner surface of the open casing 10a can be a cambered surface. Moreover, the first reflective structure 12a can be a first reflective layer that is made of reflective material, and the open casing 10a has at least two retaining grooves 100a formed on the inner surface thereof.
However, the shape of the open casing 10a and the shape of the inner surface of the open casing 10a are just examples, and it does not limit the present invention. For example, referring to
Furthermore, the heat pipe unit 2a can be a heat pipe. The heat pipe unit 2a is received in the receiving space 11a and disposed on the open casing 10a, and two opposite ends of the heat pipe unit 2a are respectively retained in the two retaining grooves 100a.
Moreover, the light-emitting unit 3a can be an LED. The light-emitting unit 3a is disposed on the heat pipe unit 2a, and the light-emitting unit 3a has a light-emitting face 30a facing the inner surface of the open casing 10a. In other words, the light-emitting unit 3a is disposed on a bottom face of the heat pipe unit 2a, and the light-emitting face 30a faces the first reflective structure 12a. In addition, the light-emitting unit 3a can obtain power by an electric wire along the heat pipe unit 2a.
Hence, light beams La generated by the light-emitting unit 3a are reflected outside the reflection-type lampshade unit 1a by using the first reflective structure 12a, so that the present invention can generate high light-generating efficiency. Heat generated by the light-emitting unit 3a can be transmitted to the reflection-type lampshade unit 1a by using the heat pipe unit 2a, so that the present invention can generate high heat-dissipating efficiency.
Referring to
Hence, light beams Lb generated by the light-emitting unit 3b are effectively reflected outside the reflection-type lampshade unit 1b by matching the first reflective structure 12b and the second reflective structure 4b, so that the light-generating efficiency of the second embodiment is better than that of the first embodiment. In addition, the shadow of the light-emitting unit 3b on the inner surface of the open casing 10b can be solved by using the second reflective structure 4b. When the first reflective structure 12b is formed on the entire inner surface of the open casing 10b, the second reflective structure 4b can be disposed on the first reflective structure 12b directly.
Referring to
Furthermore, the first reflective structure, the second reflective structure, and the third reflective structure can be mated with each other in order to obtain better light-generating efficiency.
Referring to
Referring to
Referring to
Referring to
In conclusion, the present invention can generate high heat-dissipating efficiency (high heat-conducting efficiency) and high light-generating efficiency (high light utilization percent) by matching the heat pipe unit and a plurality of types of reflective structures (the first, second and third reflective structures).
The above-mentioned descriptions represent merely the preferred embodiment of the present invention, without any intention to limit the scope of the present invention thereto. Various equivalent changes, alternations or modifications based on the claims of present invention are all consequently viewed as being embraced by the scope of the present invention.
| Number | Name | Date | Kind |
|---|---|---|---|
| 6578998 | Zhang | Jun 2003 | B2 |
| 7001047 | Holder et al. | Feb 2006 | B2 |
| 7246921 | Jacobson et al. | Jul 2007 | B2 |
| 20040252502 | McCullough et al. | Dec 2004 | A1 |
| 20070279910 | Lin | Dec 2007 | A1 |
| 20080192477 | Holder et al. | Aug 2008 | A1 |
| Number | Date | Country | |
|---|---|---|---|
| 20100264797 A1 | Oct 2010 | US |
