Patent Publication Number: US-2010124052-A1

Title: Led lamp bar

Description:
FIELD OF THE INVENTION 
     The present invention relates to an LED, particularly to an LED lamp bar. 
     BACKGROUND OF THE INVENTION 
     LED is a new-generation illumination element and features high energy efficiency and high light efficiency. LED has been widely used in various illumination devices. However, a single LED is hard to parallel a traditional fluorescent lamp or halogen lamp in brightness. Therefore, LEDs are usually assembled together to provide sufficient brightness. 
     A single LED generates limited heat, but an LED assembly generates considerable heat. A great amount of heat is apt to result in high temperature, and high temperature deteriorates and disables LED soon. Therefore, an LED illuminator needs a special cooler, such as an electric fan to dissipate heat. However, an electric fan increases cost and generates noise, which impairs the popularization of LED lamps. 
     SUMMARY OF THE INVENTION 
     The primary objective of the present invention is to provide an easy-to-fabricate LED assembly for daily illumination. 
     To achieve the abovementioned objective, the present invention proposes an LED lamp bar, which comprises an extruded aluminum reflection back plate, at least one LED carrier plate, at least one driver, a transparent lamp cover, and two side plates. The extruded aluminum reflection back plate is a strip-like structure having an accommodation room. The LED carrier plate is arranged in the accommodation room and has a plurality of contacts respectively mounting a plurality of LEDs. The driver is coupled to the LED carrier plate and drives a plurality of LEDs to emit light. The transparent lamp cover is installed on the extruded aluminum reflection back plate and covers the accommodation room. The two side plates are also installed on the extruded aluminum reflection back plate and cooperate with the transparent lamp cover to encase the accommodation room. 
     The present invention assembles together a plurality of LEDs to supply daily illumination. The extruded aluminum reflection back plate featuring high reflectivity and high thermal conductivity promotes light efficiency and dissipates heat fast, wherefore the present invention is exempted from high temperature and will satisfy consumers. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is an exploded view schematically showing the structure of an LED lamp bar according to one embodiment of the present invention; 
         FIG. 2  is a diagram schematically showing the assembled structure of an LED lamp bar according to one embodiment of the present invention; 
         FIG. 3  is a diagram schematically showing the installation of a power source in an LED lamp bar according to one embodiment of the present invention; and 
         FIG. 4  is a diagram schematically showing the assembled structure of an LED lamp bar according to another embodiment of the present invention. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Below, the embodiments are described in detail to demonstrate the technical contents of the present invention. However, the embodiments are only to exemplify the present invention but not to limit the scope of the present invention. 
     Refer to  FIG. 1  and  FIG. 2 . The LED lamp bar of the present invention comprises an extruded aluminum reflection back plate  10 , at least one LED carrier plate  20 , at least one driver  30 , a transparent lamp cover  40 , and two side plates  50 . The LED lamp bar mounts a plurality of LEDs  60 . The extruded aluminum reflection back plate  10  is a strip-like structure having an accommodation room  11 . The LED carrier plate  20  is arranged in the accommodation room  11  and has a plurality of contacts  21 . The contacts  21  are preferably arranged into a line or lines. A plurality of contacts  21  respectively mounts a plurality of LEDs  60 . 
     The driver  30  is coupled to the LED carrier plate  20  and supply voltage to drive a plurality of LEDs  60  to emit light. The transparent lamp cover  40  is installed on the extruded aluminum reflection back plate  10  and covers the accommodation room  11 . The transparent lamp cover  40  allows the light emitted by the LEDs  60  to pass through and uniformly scatters the light. The two side plates  50  are also installed on the extruded aluminum reflection back plate  10  and cooperate with the transparent lamp cover  40  to encase the accommodation room  11  and protect a plurality of LEDs  60  and the driver  30 . 
     The side plate  50  has an accommodation room  51  accommodating the driver  30 . The side plate  50  also has a blocking cover  52  used to close the accommodation room  51  and protect the driver  30 . 
     Refer to  FIG. 3 . A power source  70  is embedded on the extruded aluminum reflection back plate  10  and connected to the driver  30  and supplying power to the driver  30 . 
     Refer to  FIG. 4  for another embodiment of the present invention. In this embodiment, a slot T is formed on one plane of the extruded aluminum reflection back plate  10 , wherein the plane is far from the transparent lamp cover  40 . A hood  80  is fixed to the plane via driving a screw (or another fastening element) through the hood  80  into the slot T. The hood  80  accommodates the power source  70  and the driver  30 . 
     The structure of the present invention mounts a plurality of LEDs  60 . The LEDs  60  are preferably but not limited to white-light LEDs. The LEDs assembled on the LED lamp bar of the present invention can generate light with sufficient brightness to afford daily illumination. The extruded aluminum reflection back plate  10  featuring high reflectivity and high thermal conductivity can promote light efficiency and dissipate heat fast, wherefore the present invention is exempted from high temperature, less likely to malfunction, has a longer service life, and will satisfy consumers.