Light source module

The light source module provided by the present invention includes a base plate and a plurality of LED lights arranged on the base plate. These LED lights are distributed on the base plate in such manner that all of the light centers of the LED lights define together a triangle shape. An angle of 50-70 degree is defined between a LED light and two adjacent LED lights. The present invention has many advantages. For example, because the LED lights are distributed in a triangle arrangement, the dark regions are reduced effectively. Moreover, alternative dark and bright strips are eliminated. In addition, the base plates can be assembled quickly by means of the connective members.

CROSS REFERENCE TO RELATED PATENT APPLICATION

The present application claims the priority of the Chinese patent application No. 201010191877.5 filed on May 31, 2010, which application is incorporated herein by reference.

FIELD OF THE INVENTION

The invention relates to an energy-saving light source and more particularly, relates to a light source consisted of a plurality of LED lights.

BACKGROUND OF THE INVENTION

It is a major means to improve and promote reputation and brands of a company by using advertisement lamp-boxes. Conventional advertisement lamp-boxes appear in many public areas such as bus stations, harbors and airports.

Light intensity of a tube inside the lamp-box gets worse and worse when the distance increases. As a result, dark and bright light strips are easily shown on surfaces of the lamp-box in an alternative manner. To eliminate these alternatively shown light strips, the number and light intensity of the tubes are necessarily increased, hence resulting in significant consumption of energy and increase of the cost. With the development of technologies, energy-saving LED lights are utilized. A plural LED lights are installed together to replace above conventional light tubes. However, these newly emerging LED lights still fail to eliminate alternative light strips, as shown inFIG. 1. Attempts have been made to overcome above problem by arranging the LED lights so that they have a cellular or square arrangement (as shown inFIGS. 3 and 5). These cellular or square arrangements failed to completely overcome the above issue and further resulted in other drawbacks such as large area of dark strip (as shown inFIGS. 2,4and6).

SUMMARY OF THE INVENTION

To overcome above drawbacks of prior art, a light source module is provided which has minimum area of dark region, eliminates the alternative dark and bright strips, and is easy to be assembled together.

The light source module provided by the present invention includes a base plate and a plurality of LED lights arranged on the base plate. These LED lights are distributed on the base plate in such manner that all of the light centers of the LED lights define together a triangle shape. An angle of 50-70 degree is defined between a LED light and two adjacent LED lights.

Preferably, the above angle is 60 degree such that an equilateral triangle is formed.

These LED light are distributed so that they have identical distances one another.

The effective light coverage between two LED lights takes on a circular shape and these coverages are tangential one another at peripheries thereof. A virtual light source is formed between two adjacent LED lights and defines a dark region of a shape similar to triangle.

The base plate has a first and second connective members provided on its undersurface. The first connective member has a first insertion pin provided thereon. The second connective member has a second insertion pin equipped thereon. The first and second insertion pins are orientated in opposite directions.

The first and second insertion pins are inserted into chambers defined respectively in the first and second connective members so as to assemble the base plates together. The sidewalls of the first and second insertion pins are pressed against to each other in order to limit the position.

The present invention has many advantages. For example, because the LED lights are distributed in a triangle arrangement, the dark regions are reduced effectively. Moreover, alternative dark and bright strips are eliminated. In addition, the base plates can be assembled quickly by means of the connective members. Other advantages and novel features will be drawn from the following detailed description of embodiments with attached drawings, in which:

DETAIL DESCRIPTION OF THE INVENTION

Various embodiments of the invention will now be discussed in conjunction with the drawings.

As shown inFIG. 7, a light source module according to one embodiment of the invention includes a base plate1and a plurality of LED lights101-103installed on the base plate1. The LED lights101-103are arranged in such manner that the light source centers of these LED lights101-103define collectively a triangle shape. An angle of 50-70 degree is defined between each LED light and two adjacent LED lights.

The effective light coverages among the LED lights101-103takes on a circular shape and these coverages are tangential one another at peripheries thereof. A virtual light source is formed among the LED lights101-103and defines a dark region104of a shape similar to triangle.

Preferably, the angles defined among these LED lights101-103are 60 degree such that an equilateral triangle is defined. These LED light are distributed so that they have identical distances one another.

As shown inFIG. 11, a light source module according to another embodiment of the invention is illustrated in a schematic manner. The light source shown inFIG. 11contains a plurality of LED lights101-103which are arranged in such a manner that three angles are defined among them. These angles may be 51 degree, 64.5 degree and 64.5 degree respectively.

As shown inFIGS. 9-10. The base plate1has a first and second connective members105and107provided on its undersurface. The first connective member105has a first insertion pin106provided thereon. The second connective member107has a second insertion pin108equipped thereon. The first and second insertion pins106and108are orientated in opposite directions.

The first and second insertion pins106,108are inserted into chambers defined respectively in the first and second connective members105,107so as to assemble the base plates1together. The sidewalls of the first and second insertion pins106,108are pressed against to each other in order to limit the position. As shown inFIG. 8, the dark region104is of a triangle when these LED lights is lit. Clearly, the area of the dark region104is significantly smaller than that of the LED lights with a cellular arrangement or rectangular arrangement.

The base plates1may be assembled effectively using the above connective members105,107so as to form a large group of base plate.