Abstract:
A lamp tube includes a encapsulation and a power rectifier member. The power rectifier member includes a power rectifier to convert alternating current (AC) energy into direct current (DC) energy. A first holder defining a first cavity for receiving the power rectifier, and a second cavity for detachably receiving and electrically connecting with one end of the encapsulation; and a first side cover detachably connected to the first holder to cover the first cavity.

Description:
BACKGROUND 
       [0001]    1. Technical Field 
         [0002]    The present disclosure relates to lamp tubes, particularly, to an lamp tube with detachable power rectifier member. 
         [0003]    2. Description of Related Art 
         [0004]    A conventional LED lamp usually includes a encapsulation and a power rectifier securely fixed to one end of the encapsulation. The encapsulation is usually more durable than the power rectifier. Once the rectifier is damaged, the whole LED lamp cannot be used again. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0005]    Many aspects of the embodiments can be better understood with reference to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present disclosure. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views. 
           [0006]      FIG. 1  is a schematic view of a lamp tube with detachable power rectifier member in accordance with an exemplary embodiment. 
           [0007]      FIG. 2  is an exploded view of the lamp tube of  FIG. 1 . 
           [0008]      FIG. 3  is a cross-sectional view of a power rectifier member of the lamp tube  FIG. 1 . 
       
    
    
     DETAILED DESCRIPTION 
       [0009]    Referring to  FIG. 1 , in an embodiment, an LED lamp tube  100  includes a power rectifier member  10 , a fixing member  20 , and a encapsulation  30  that houses electronic components (not shown), such as a PCB and a number of light emitting diodes (LEDs) mounted on the PCB. The power rectifier member  10  and the fixing member  20  are removably connected to opposite ends of the encapsulation  30 . 
         [0010]    Referring to  FIGS. 2 and 3 , the power rectifier member  10  includes a first side cover  11 , a power rectifier  12 , a first holder  13 , and a first conductive spring member  14 . The power rectifier  12  is employed to covert AC power to DC power. The first holder  13  is a hollow tube and defines a first cavity  131  and a second cavity  132  separated from the first cavity  131  by a spacer  16 . The first cavity  131  is used to receive the power rectifier  12 , and the second cavity  132  is used to receive a first end of the encapsulation  30 . 
         [0011]    Two grooves  133  are formed in the internal surface of the first cavity  131 . Two ribs  134  protrude from a lateral surface of the power rectifier  12  and are respectively engaged into the two grooves  133  of the first cavity  131 , to prevent the power rectifier  12  from rotating relative to the first cavity  131 . An electrical-conductive internal thread  17  is formed in the internal lateral surface of the second cavity  132 . An electrical-conductive external thread  32  is formed in the lateral surface of the first end of the encapsulation  30 . The first holder  13  can thus be engaged with the encapsulation  30  by the engagement of the internal thread  17  with the external thread  32 . 
         [0012]    One end of the first conductive spring member  14  penetrates and is fixed to the spacer  16 , and is connected to the power rectifier  12 . The other opposite end of the first conductive spring member  14  abuts against a conductive portion  31  on one end of the encapsulation  30 , which electrically connects the encapsulation  30  to the power rectifier  12 . 
         [0013]    The first side cover  11  is detachably connected to one end of the first holder  13  and covers the fist cavity  131  of the first holder  13 . A pair of contact pins  15  protrudes from and is fixed to one end of the first side cover  11 , and is electrically connected to two pins of the power rectifier  12 . In the embodiment, the contact pins  15  are made of electrically conductive material, such as copper or aluminum. 
         [0014]    One electrode of the power rectifier  12  is electrically connected to the internal thread  17  of the first cavity  131  and grounded by the first cavity  131 . The other electrode of the power rectifier  12  is electrically connected to the first conduction spring  14 , thus the power rectifier  12  is electrically connected with the encapsulation  30  by the first conduction spring  14 . 
         [0015]    The fixing member  20  includes a second side cover  22  and a second holder  23 . One end of the second holder  23  is fixed to the second side cover  22 , and the other opposite end of the second holder  23  is detachably connected to a second end of the encapsulation  30 . In the embodiment, an electrical-conductive internal thread  18  is formed in the internal lateral surface of the second holder  23 , adjacent to the encapsulation  30 . An electrical-conductive external thread  36  is formed in the lateral surface of the second end of the encapsulation  30 . The second holder  23  can thus be engaged with the encapsulation  30  by the engagement of the internal thread  18  with the external thread  36 . A second conductive spring member  24  is fixed to the bottom of the second side cover  22 , and includes a free end abutting against a conductive portion  35  on an end of the encapsulation  30 . A pair of contact pins  25  protrudes from and is fixed to one end of the second side cover  22 , and is electrically connected to the second conductive spring member  24 . 
         [0016]    In the embodiment, the encapsulation  30  includes a lamp-house, a base plate (not shown) and a number of LED lamps (not shown) electrically connected mutually in series to the base plate. The base plate and the LED lights are enclosed in the light-house. Both ends of the LED lamps electrically connect with the power rectifier member  10  and the fixing member  20  correspondingly by the conductive portions  31  and  35 . 
         [0017]    When needed, the power rectifier member  10  can be detached from the encapsulation  30  and replaced with a new one. The service life the LED lamp tube  100  can thus be prolonged. 
         [0018]    Although the present disclosure has been specifically described on the basis of the exemplary embodiment thereof, the disclosure is not to be construed as being limited thereto. Various changes or modifications may be made to the embodiment without departing from the scope and spirit of the disclosure.