Patent Publication Number: US-2013235575-A1

Title: Led light module

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to an LED light module, especially to an LED light module wherein any individual LED light of the LED light module can be easily disassembled. 
     2. Description of the Prior Arts 
     Light Emitting Diode (LED) is a semiconductor light source. LED has many advantages such as high efficiency, long life span, durability against breaking, quickness in reaction and high reliability, and the LED light has replaced the conventional light gradually. 
     The LED light has a variety of utilities, one of which is for use in the advertisement billboard. When used in a billboard, multiple LEDs with a mounting board constitute an LED light module. The LED lights are mounted on the mounting board and are arranged in order to form an illustration or a character. Because the illustration or character comprises LED lights, even if only one LED light is damaged, the broken LED light would cause a serious impact on the whole illustration or character. As a result, the broken LED light has to be repaired or replaced as soon as possible. 
     However, the LED light cannot be separated from the mounted board easily in the conventional LED light module, so the user needs to remove the whole LED light module even only one LED light is damaged, and it causes great inconvenience, especially because the billboard is often mounted on a high place. The operation and transportation of the LED light module is more inconvenient 
     To overcome the shortcomings, the present invention provides an LED light module to mitigate or obviate the aforementioned problems. 
     SUMMARY OF THE INVENTION 
     The main objective of the present invention is to provide an LED light module wherein any individual LED light of the LED light module can be easily disassembled. 
     The LED light module in accordance with the present invention has a mounting board and multiple LED lights mounted securely on the mounting board. Each LED light has a casing, a lighting module and two resilient sheets. The lighting module is mounted in the casing. The resilient sheets are mounted on an outside wall of the casing and abut an annular edge around a mounting hole of the mounting board. The LED lights are mounted securely on the mounting board by the resilient three of the resilient sheets, so the user only has to push the LED light to resist the slightly resilient force, and the LED light can be disassembled from the mounting board. Thus, any individual LED light can be easily disassembled. 
     Other objectives, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a perspective view of an LED light module in accordance with the present invention; 
         FIG. 2  is a partially exploded perspective view of the LED light module in  FIG. 1 ; 
         FIG. 3  is a partially exploded perspective view of the LED light module in  FIG. 1 ; 
         FIG. 4  is a partially exploded perspective view of the LED light module in  FIG. 1 ; 
         FIG. 5  is a side view in partial section of the LED light module in  FIG. 1 ; 
         FIG. 6  is an enlarged perspective view of the LED light module in  FIG. 1 ; 
         FIG. 7  is an operational side view in partial section of the LED light module in  FIG. 1 , showing a route of the light; 
         FIG. 8  is an operational side view of the LED light module in  FIG. 1 , showing that the user operates from the back of the LED light module; 
         FIG. 9  is an operational view of the LED light module in  FIG. 1 , showing the first act of the disassembling from the back of the LED light module; 
         FIG. 10  is an operational view of the LED light module in  FIG. 1 , showing the second act of the disassembling from the back of the LED light module; 
         FIG. 11  is an operational view of the LED light module in  FIG. 1 , showing the third act of the disassembling from the back of the LED light module; 
         FIG. 12  is an operational side view of the LED light module in  FIG. 1 , showing that the user operates from the front of the LED light module; 
         FIG. 13  is an operational view of the LED light module in  FIG. 1 , showing the first act of the disassembling from the front of the LED light module; 
         FIG. 14  is an operational view of the LED light module in  FIG. 1 , showing the second act of the disassembling from the front of the LED light module; and 
         FIG. 15  is an operational view of the LED light module in  FIG. 1 , showing the third act of the disassembling from the front of the LED light module. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     With reference to  FIG. 1 , an LED light module in accordance with the present invention comprises a mounting board  10  and multiple LED lights  20 . 
     With reference to  FIGS. 1 and 2 , the mounting board  10  has multiple mounting holes  11 . 
     With reference to  FIGS. 2 to 5 , the multiple LED lights  20  are respectively mounted securely in the mounting holes  11  of the mounting board  10 , and each LED light  20  has a casing, a lighting module  50 , a waterproof gasket  62 , and two resilient sheets  70 . In a preferred embodiment, each LED light  20  further has a refraction lens  61 . 
     The casing is mounted in one of the mounting holes  11  of the mounting board  10 , and has a back cover  30 , a front cover  40  and an inner cavity. The back cover  30  has two back buckling segments  32  and a power hole  33 . In a preferred embodiment, the back cover  30  has an inner cavity, a front side opening and an annular flange  31  formed annularly around an outside wall of the back cover  30 . The back buckling segments  32  are formed on the annular flange  31 , and each back buckling segment  32  has a buckling hole  321  and two separating recesses  322 . The separating recesses  322  are respectively formed in two opposite sides of the back buckling segment  32 . The back cover  30  has two buckles  34  formed oppositely on an annular edge around the power hole  33  of the back cover  30 . 
     The front cover  40  has a lens segment  42  and two front buckling segments  43 . The lens segment  42  is transparent and is formed on a front side of the front cover  40 . The front buckling segments  43  respectively engage with the back buckling segments  32 . In a preferred embodiment, a backside of each front buckling segment  43  is a slope. A diameter of the lens segment  42  is bigger than a diameter of the mounting hole  11  of the mounting board  10 . The lens segment  42  has two slope recesses  421  formed in a periphery of the lens segment  42 . The front cover  40  covers the opening of the back cover  30 , and has a surrounding wall  41 . The surrounding wall  41  is mounted in the mounting hole  11  of the mounting board  10 , has an inner cavity and two side openings, and is mounted around the back cover  30 . The front cover  40  further has two connecting segments  44  formed on an outside wall of the surrounding wall  41 , and each connecting segment  44  has a front protrusion  441  and a back protrusion  442 . The front side of the back protrusion  442  is a slope. 
     The inner cavity of the casing is formed between the front cover  40  and the back cover  30 . 
     The lighting module  50  is mounted in the inner cavity of the casing, and has a circuit board  51  and at least one LED  52  mounted on the circuit board  51 . In a preferred embodiment, the lighting module  50  has multiple LEDs  52 , and the LEDs  52  have at least two different colors. The lighting module  50  has multiple pins  511  and a pin gasket  53 . The pins  511  are formed on a backside of the circuit board  51 . The pin gasket  53  is mounted on the backside of the circuit board  51 , and is mounted around the pins  511 . 
     The refraction lens  61  is mounted in the inner cavity of the casing, and is mounted between the lens segment  42  of the front cover  40  and the lighting module  50 . 
     The waterproof gasket  62  is mounted on the casing, and is mounted between the front cover  40  and the back cover  30 . In a preferred embodiment, the waterproof gasket  62  is mounted around the back cover  30 , and is clamped between the annular flange  31  of the back cover  30  and the surrounding wall  41  of the front cover  40 . 
     With reference to  FIGS. 3 ,  5  and  6 , the resilient sheets  70  are mounted on an outside wall of the casing, and abut an annular edge around the corresponding mounting hole  11  of the mounting board  10 . In a preferred embodiment, the resilient sheets  70  are mounted on the outside wall of the surrounding wall  41  of the front cover  40 . The resilient sheets  70  respectively engage with the connecting segments  44  of the front cover  40 , and each resilient sheet  70  engages between the front protrusion  441  and the back protrusion  442 . Each resilient sheet  70  has an abutting segment  71 , and the mounting board  10  is clamped between the abutting segment  71  and the lens segment  42  of the front cover  40 . 
     With reference to  FIGS. 2 and 4  to  6 , when the LED light module as described is used, the LED lights  20  are mounted in the mounting holes  11  of the mounting board  10  from the front side, and the resilient sheets  70  of each LED light  20  abut the mounting board  10 . Then, the power cord  80  is mounted through the power hole  33  of the back cover  30  of the LED light  20 , is attached to the pins  511  of the circuit board  51 , and engages the buckles  34  around the power hole  33 . With the pin gasket  53  mounted around the place where the power cord  80  is attached to the pins  511 , the pin gasket  53  provides a waterproof effect. In a preferred embodiment, the LED lights  20  are in series connection by the power cord  80  as shown in  FIG. 6 . When the LED light  20  is used, the LEDs  52  on the circuit board  51  are operated, and the light from the LEDs  52  passes through the refraction lens  61  and the lens segment  42  of the front cover  40 . The light gets refracted and shines downward and obliquely as shown in  FIG. 7 . As a result, when the present invention is mounted on a high place, people on the ground can easily see the downward light. 
     A conventional billboard tends to be huge, so the billboard is often mounted on the top of a building. Besides, the billboard is often mounted on a periphery of the top floor, so the building would not block the billboard. The billboard is installed in two ways: 
     First, a stationary maintenance route is mounted behind the billboard, so the maintenance route would not block the billboard. 
     Second, a removable maintenance route is mounted in front of the billboard, but is installed only when the billboard needs maintenance work. 
     The present invention applies to the above two ways, and the LED lights  20  can be disassembled in two directions. 
     One disassembling direction is to disassemble the LED lights from the back of the mounting board  10 . With reference to  FIGS. 8 to 11 , when a distance between the billboard and the building is adequate as shown in  FIG. 8 , the user can operate in the back of the back cover  30 . After pulling and opening a front side of the back buckling segment  32 , the buckling hole  321  of the back buckling segment  32  is departed from the front buckling segment  43  of the front cover  40 , so the back cover  30  can be disassembled from the back of the mounting board  10 . Besides, the user also can use a sharp object to prick into the separating recess  322  and open the back buckling segment  32  as shown in  FIG. 9 . Then after the power cord  80  is departed from the lighting module and the back cover  30 , the power cord  80  is connected to a new back cover  30  and a new lighting module. Finally, the new back cover with the new lighting module is mounted in the surrounding wall  41  of the front cover  40 , and the changing of the LED light  20  is completed. 
     Another disassembling direction is to disassemble the LED lights from the front of the mounting board  10 . With reference to  FIGS. 12 to 15 , when a distance between the billboard and the building is inadequate as shown in  FIG. 12 , the user can operate in the front of the front cover  40 . The user also can use a sharp object to prick into a gap between the lens segment  42  and the mounting board  10  and push forward to eject the LED light  20 . Besides, the user also can use a sharp object to prick into the slope recess  421  and push out the LED light  20  as shown in  FIG. 13 . Then, after the power cord  80  is departed from the lighting module and the back cover  30 , the power cord  80  is connected to a new LED light  20 . Finally, the new LED light  20  is mounted in and engages the mounting hole  11  of the mounting board  10 , and the changing of the LED light  20  is completed. 
     With reference to  FIGS. 3 and 6 , with each single LED light  20  having LEDs  52  of different colors, the lights can be mixed to a new color. Besides, the colors of different LED lights  20  on the mounting board  10  also can be different. When the LED lights  20  are installed, the user does not have to know about the color of the LED light  20 . The only thing the user has to pay attention to is not interfering with the arrangement of the power cords  80 . 
     Even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and features of the invention, the disclosure is illustrative only. Changes may be made in the details, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.