Abstract:
Disclosed are an LED floor lamp and its circuit. The LED floor lamp includes a power module and a light emitting module, and the power module includes a power circuit board and a first coil, and the light emitting module includes a light emitting circuit board, a second coil and an LED light source. The power circuit board and the light emitting circuit board are parallel to each other, and the first coil is fixed on the power circuit board and proximate to the second coil of the light emitting module, and the second coil is fixed on the light emitting circuit and proximate to the first coil of the power module. The LED light source is installed on the light emitting circuit. Therefore, the floor lamp and its circuit can be installed, adjusted, and maintained easily, and the LED light source can be changed conveniently.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    1. Field of the Invention 
         [0002]    The present invention relates to the field of electronic technology, and more particularly to an LED floor lamp and its circuit. 
         [0003]    2. Description of the Related Art 
         [0004]    An LED floor lamp refers to an LED lamp embedded into a ground, lawn or wall bottom. The LED floor lamp is used extensively in courtyards, squares and other places to provide illumination and creating views with a soft light effect without occupying useful spaces. 
         [0005]    With reference to  FIG. 1  for a conventional LED floor lamp, the conventional LED floor lamp comprises an embedded box  10 , an inner holder  11 , a waterproof gasket  12 , a printed circuit board  13 , a translucent glass  14  and a top cover  15 , wherein the embedded box  10  is embedded into a ground, lawn or wall bottom to form a cavity apart from the ground, lawn or wall, and both of the inner holder  11  and the printed circuit board  13  are installed in the embedded box  10 , and the printed circuit board  13  is installed on the inner holder  11 , and the inner holder  11  has a fixed sleeve  110 , so that after an electric wire is passed through a through hole on the inner holder and through the fixed sleeve  110 , the electric wire can be connected to the printed circuit board  13  to supply electric power to the printed circuit board  13 . The printed circuit board  13  has an LED light source  130  and a control chip  131  installed thereon, and both of the LED light source  130  and the control chip  131  are electrically coupled to the printed circuit board for transmitting a power signal and a control signal. The top of the inner holder has a flange, and the waterproof gasket  12  is installed on the flange and aligned evenly with a surface of the inner holder  11 , and the translucent glass  14  is installed at the top of the inner holder  11  and attached to the waterproof gasket, so that the interior of the inner holder  11  becomes a sealed structure, and the top cover  15  is installed on the translucent glass  14  through a locking element, so that the top cover  15 , the translucent glass  14 , the waterproof gasket  12  and the printed circuit board  13  are fixed to the inner holder  11 . 
         [0006]    From the above description of the conventional LED floor lamp, the LED light source  130 , the printed circuit board  13  and the electric wire  132  are fixed to one another. If the LED light source is damaged, the following two repair methods can be used: 1. It is not necessary to carry the LED light source to the installation site of the LED floor lamp, but it is necessary to cut the electric wire  132  in order to remove the printed circuit board  13  and replace the damaged LED light source  130 , and then solder the electric wire  133  back to its original position before the LED floor lamp can be used normally again. 2. It is not necessary to cut the electric wire  132 , but it is necessary to bring a new LED light source to the installation site of the LED floor lamp for replacement. Since the operating environment of the LED floor lamp is usually poor and has a large humidity difference, so that the failure rate of the LED light source is high, and the frequency of the replacement and repair of the LED light source is also high. Obviously, the repair, maintenance and replacement of the LED floor lamp bring tremendous inconvenience. 
       SUMMARY OF THE INVENTION 
       [0007]    Therefore, it is a primary objective of the present invention to overcome the drawbacks of the conventional LED floor lamp by providing an LED floor lamp and a circuit of the LED floor lamp that can be maintained, repaired or replaced conveniently and quickly. 
         [0008]    To achieve the aforementioned and other objectives, the present invention provides an LED floor lamp comprising a power module  100  and a light emitting module  200 , and the power module  100  includes a power circuit board  101  and a first coil  102 , and the light emitting module  200  includes a light emitting circuit board  201 , a second coil  202  and an LED light source  203 , and the power circuit board  101  and the light emitting circuit board  201  are installed parallel to each other, and the first coil  102  is fixed onto the power circuit board  101  and disposed at a position proximate to the second coil  202  of the light emitting module  200 , and the second coil  202  is fixed onto the light emitting circuit board  201  and disposed at a position proximate to the first coil  102  of the power module  100 , and the LED light source  203  is installed on the light emitting circuit board  201 . The present invention further provides an LED lamp circuit comprising a power conversion module, an LED driving control circuit, a wireless power transmitter module electrically coupled to the power conversion module, and a wireless power receiver module electrically coupled to the LED driving control circuit. 
         [0009]    The LED floor lamp of the present invention and a circuit thereof can transmit power signals via wireless transmission to facilitate the installation, testing, maintenance, repair and replacement of the LED light source. In addition, the LED floor lamp can control the LED power and brightness by a control device and adjust the power and brightness of the LED light source automatically by the detection of the operating environment or power. Obviously, the present invention provides tremendous convenience and high practicality to users. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0010]      FIG. 1  is an exploded view of a conventional floor lamp; 
           [0011]      FIG. 2  is an exploded view of a floor lamp of a first preferred embodiment of the present invention; 
           [0012]      FIG. 3  is a block diagram of a floor lamp of a second preferred embodiment of the present invention; and 
           [0013]      FIG. 4  is a block diagram of a floor lamp of the second preferred embodiment of the present invention. 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
       [0014]    The technical content of the present invention will become apparent with the detailed description of preferred embodiments and the illustration of related drawings as follows. It is noteworthy that the preferred embodiments are provided for illustrating the present invention, but not intended for limiting the scope of the invention. 
         [0015]    With reference to  FIGS. 2 and 3  for the first preferred embodiment of the present invention, this preferred embodiment provides an LED floor lamp comprising a power module  100  and a light emitting module  200 . The power module  100  includes a power circuit board  101  and a first coil  102 , and the light emitting module  200  includes a light emitting circuit board  201 , a second coil  202  and an LED light source  203 , wherein the power circuit board  101  and the light emitting circuit board  201  are installed parallel to each other. The first coil  102  is fixed onto the power circuit board  101  and disposed at a position proximate to the second coil  202  of the light emitting module  200 , and the second coil  202  is fixed onto the light emitting circuit board  201  and disposed at a position proximate to the first coil  102  of the power module  100 . The LED light source  203  is installed on the light emitting circuit board  201 . Persons having ordinary skill of the art could understand that the external power supply is connected to the first coil  102  via an electric wire  401  and the power circuit board  101  for supplying electric power to the first coil  102 . Under the electromagnetic coupling effect, the second coil  202  generates an induced current, and the electric power is supplied to the LED light source  203  through the light emitting circuit board  201 . As such, there is no physical connection (such as electric wire  401 ) between the power circuit board  101  and the light emitting circuit board  201 . For the repair, maintenance, or replacement of the LED floor lamp, it is not necessary to cut the electric wire  401  for the removal of the light emitting circuit board  201 , so that users can repair, maintain or replace the LED light source  203  conveniently. 
         [0016]    The power module  100  includes an electromagnetic shielding substrate  104  installed between the power circuit board  101  and the first coil  102  for preventing electromagnetic interferences of the coil, so that the LED floor lamp of this preferred embodiment has a better performance. 
         [0017]    In this preferred embodiment, the LED floor lamp further comprises a first casing  105  for covering the power module  100 , and the first casing  105  has a first through hole (not shown in the figure) formed thereon, such that an end of the electric wire  401  can be passed through the first through hole into the first casing  105  and electrically coupled to the power circuit board  101 , and the other end of the electric wire  401  is coupled to the power source, so as to supply electric power to the first coil  102  of the power circuit board  101 . 
         [0018]    Preferably, the light emitting circuit board  201  is in a circular shape, and the second coil  202  is a single-layer structure along the axial direction of the light emitting circuit board  201 . 
         [0019]    The quantity of LED light sources  203  is at least one. 
         [0020]    The distance between the first coil  102  and the second coil  202  ranges from 0 cm to 20 cm. 
         [0021]    In this preferred embodiment, the LED floor lamp further comprises a lamp panel frame  106 , and the lamp panel frame  106  includes a first part  1061  and a second part  1062  fixed to the top end of the first part  1061 , and both of the first part  1061  and the second part  1062  are in a cylindrical shape. And the internal diameter of the second part  1062  is equal to the external diameter of the first part  1061 , so that the top end of the first part  1061  forms a first flange  1063  on an inner side of the second part  1062 . Persons having ordinary skill of the art could understand that after the LED floor lamp is assembled, the power module  100  is installed in the first part  1061 , and the second coil  202  is installed in the second part  1062  and supported by the top end of the first part  1061  to maintain the distance between the first coil  102  and the second coil  202 . Persons having ordinary skill of the art could understand that the height of the first part  1061  is related to the distance between the first coil  102  and the second coil  202  and designed according to the distance between the first coil  102  and the second coil  202 . 
         [0022]    In this preferred embodiment, the LED floor lamp further comprises an embedding box  402  having a circular box bottom  4021  and a cylindrical box wall  4022 , wherein the top of the box wall  4022  further has a second flange  4023 . In this preferred embodiment, the LED floor lamp further comprises a translucent glass cover  403  and a circular top cover  404 , and the circular top cover  404 , the first flange  1063  and the second flange  4023  have a locking hole  405  formed separately thereon, so that the circular top cover  404 , the lamp panel frame  106  and the embedding box  402  can be secured via a locking element. 
         [0023]    The cylindrical box wall  4022  has a second through hole  406  formed thereon and disposed at a position corresponding to the first through hole, and a fixing sleeve penetrating through the first through hole and the second through hole  406  to facilitate passing the electric wire  401  into the first casing  105  to electrically connect with the power circuit board  101 . 
         [0024]    With reference to  FIGS. 3 and 4  for the second preferred embodiment of the present invention, this preferred embodiment provides an LED lamp circuit comprising a power conversion module and an LED driving control circuit characterized in that the LED lamp circuit further comprises a wireless power transmitter module electrically coupled to the power conversion module and a wireless power receiver module electrically coupled to the LED driving control circuit. Persons having ordinary skill of the art could understand that the power conversion module is connected to the utility power for converting the utility power into a power signal compatible to the LED lamp circuit and transmitting the power signal to the wireless power transmitter module, and the wireless power transmitter module transmits the power signal via wireless transmission, and the wireless power receiver module receives the power signal transmitted from the wireless power transmitter module via wireless transmission and then transmits the power signal to the LED driving control circuit for controlling the light emission of the LED. 
         [0025]    The wireless power transmitter module includes a first coil, and the wireless power receiver module includes a second coil. Persons having ordinary skill of the art could understand that the second coil is capable of generating an induced current according to an electromagnetic coupling effect to achieve the wireless transmission of the power signal. 
         [0026]    In this preferred embodiment, the LED lamp circuit further comprises a first signal processing unit, a first control signal transmission module, a second control signal transmission module and a second processing unit sequentially and electrically coupled to one another. The first signal processing unit includes a control signal input interface, and the first signal processing unit is coupled to an output terminal of the power conversion module for receiving the power signal, and the output terminal of the second signal processing unit is coupled to the LED driving control circuit. Persons having ordinary skill of the art could understand that after the first signal processing unit has received the control signal through the control signal input interface, the control signal is transmitted to the first control signal transmission module, and the first control signal transmission module transmits the control signal to the second control signal transmission module via wireless transmission, and the second control signal transmission module transmits the control signal received to the second signal processing unit via wireless transmission, and the second signal processing unit processes the control signal and controls the LED driving control circuit according to the processed result, so as to adjust the light emission of the LED lamp. 
         [0027]    In  FIG. 3 , the first control signal transmission module is a third coil, and the second control signal transmission module is a fourth coil. Persons having ordinary skill of the art could understand that the second coil generates an induced current according to the electromagnetic coupling effect to achieve the wireless transmission of the control signal. 
         [0028]    In  FIG. 4 , the first control signal transmission module may be a first photoelectric coupler and the second control signal transmission module may be a second photoelectric coupler. Persons having ordinary skill of the art could understand that the first signal processing unit transmits the received control signal to the first photoelectric coupler, and the first photoelectric coupler issues a corresponding optical signal according to the control signal, and the second photoelectric coupler receives the optical signal and generates a corresponding electric control signal according to the photoelectric coupling effect and transmits the electric control signal to the second signal processing unit, and the second signal processing unit controls the LED driving control circuit according to the electric control signal to adjust the light emission of the LED lamp. 
         [0029]    The second signal processing unit may be coupled to the wireless power receiver module, so that the second signal processing unit can control the output voltage of the wireless power receiver module according to the control signal to adjust the light emission of the LED lamp. 
         [0030]    The second signal processing unit further comprises a power interface coupled to the wireless power receiver module, so that when the wireless power receiver module supplies power to the LED driving control circuit, electric power is also supplied to the second signal processing unit. 
         [0031]    The second processing unit includes a detection device (not shown in the figure) coupled to the second control signal transmission module, wherein the detection device may be a temperature detection device, a humidity detection device or a power detection device, and the detection device is provided for detecting the LED lamp, and the detection result is fed back to the first signal processing unit through the second control signal transmission module and the first control signal transmission module, and the first signal processing unit adjust the output voltage of the power conversion module according to the detection result to adjust the light emission condition of the LED lamp. 
         [0032]    The control signal input interface is the Digital Addressable Lighting Interface (DALI), Power Line Communication (PLC) interface), RS-485 interface or Pulse Width Modulation (PWM) signal interface provided for receiving electric signals of the compliant protocol. 
         [0033]    While the invention has been described by means of specific embodiments, numerous modifications and variations could be made thereto by those skilled in the art without departing from the scope and spirit of the invention set forth in the claims.