Abstract:
An integral lamp with a replaceable light source includes a bulb base, an LED light emitting module and a lamp hood. The bulb base is integrally made of aluminum, with the LED light emitting module and the lamp hood independently assembled on or disassembled from the bulb base in order. Heat generated by the LED light emitting module can be directly scattered out by the bulb bas, without installing any extra heat dispersing device so as to simplify the structure of the lamp and lower assembling cos. And with the bulb base polished, light reflection can be enhanced. The LED light emitting module can be swiftly disassembled for maintenance or being replaced with a new one if breaking down, with the other components remaining still usable. So waste can be reduced to be friendly to environment.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    1. Field of the Invention 
         [0002]    This invention relates to an integral lamp with a replaceable light source. 
         [0003]    2. Description of the Prior Art 
         [0004]    As LED lamps have advantages of low energy consumption, high efficiency, a short response time, a long service life and containing nothing unfriendly to environment, such as mercury, they have been gradually replacing conventional lamps, such as a fluorescent lamp or an energy-saving lamp. However, service life and reliability of the LED lamps depend on temperature. If heat generated by LED lamps cannot be properly dispersed out, it is to make LED interface over heated to downgrade light emitting efficiency, stability and service life. That is, the higher the temperature is, the shorter the service life is. For an LED lamp, an LED module is usually the only component that is apt to break down. So a heat dispersing module, such as heat dispersing fins or tubes, is always additionally installed in an LED lamp to step up dispersing effect. But, with the heat dispersing module, it is to augment structural complexity, manufacturing cost and assembling difficulty of the LED lamp. 
       SUMMARY OF THE INVENTION 
       [0005]    The object of this invention is to offer an integral lamp with a replaceable light source, with advantages of excellent heat dispersing ability, a simple manufacturing process and saving energy. 
         [0006]    The main characteristics of the invention are a bulb base, an LED light emitting module and a lamp hood. The LED light emitting module is installed on a bottom plate of the bulb base, able to be disassembled. The LED light emitting module is provided with a base made of aluminum, a circuit board inserted in one side of the base corresponding to the bottom plate, plural LEDs and a circuit driving unit located on one side of the circuit board opposite to the bottom plate, and a power plug positioned on one side of the circuit board facing to the bottom plate and inserted through the base to engage with the socket. The lamp hood is made of a transparent material, installed on the bulb base. 
         [0007]    By means of the bulb base, heat generated by the LED light emitting module can be directly transmitted and scattered into the atmosphere without necessity to install any extra heat dispersing means, able to simplify the structure of the lamp and lower assembling cost. The bulb base can also be polished to enhance reflection of light. With the bulb base and the lamp hood able to be designed variously according to requirement, the lamp is not merely a lamp, but a decoration also. In case the LED light emitting module breaks down, it can be quickly disassembled for maintenance or being replaced with a new one without throwing away the whole lamp, not only simplifying manufacturing and assembling process, but also lessen waste to save energy. 
     
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         [0008]    This invention is better understood by referring to the accompanying drawings, wherein: 
           [0009]      FIG. 1  is a perspective view of a first preferred embodiment of an integral lamp with a replaceable light source in the present invention; 
           [0010]      FIG. 2  is an exploded perspective view of the first preferred embodiment of an integral lamp with a replaceable light source in the present invention; 
           [0011]      FIG. 3  is another exploded perspective view of the first preferred embodiment of an integral lamp with a replaceable light source in the present invention; 
           [0012]      FIG. 4  is a cross-sectional view of the first preferred embodiment of an integral lamp with a replaceable light source in the present invention; 
           [0013]      FIG. 5  is a cross-sectional view of a second preferred embodiment of an integral lamp with a replaceable light source in the present invention; 
           [0014]      FIG. 6  is a cross-sectional view of a third preferred embodiment of an integral lamp with a replaceable light source in the present invention; and 
           [0015]      FIG. 7  is a cross-sectional view of a fourth preferred embodiment of an integral lamp with a replaceable light source in the present invention. 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
       [0016]    As shown in  FIGS. 1˜3 , a first preferred embodiment of an integral lamp  100  with a replaceable light source in the present invention is composed of a base plate  10 , a bulb base  20 , an LED light emitting module  30 , a lamp hood  40  and a bulb cap  50 . 
         [0017]    The base plate  10  is integrally made of steel, provided with a round accommodating groove  11  formed in the center, and plural fixing holes  12  bored in the bottom of the accommodating groove  11  for plural fixing members (not shown in Figs.) to insert through to keep the base plate  10  positioned on a wall or a ceiling. 
         [0018]    The bulb base  20  is fitted in the accommodating groove  11  of the base plate  10 , integrally made of aluminum apt to disperse heat, with a shape similar to a disc. The bulb base  20  is provided with a bottom plate  21 , a circumferential wall  22  extended upward around the outer circumference of the bottom plate  21 , a heat dispersing portion  23  horizontally extending outward from the free side of the circumferential wall  22 , and a socket  24  installed at the center of the bottom plate  21  to connect to a power source by a wire (not shown in Figs.). Furthermore, plural magnetic units  25  are located on the bottom plate  21  around the socket  24 , respectively provided with a powerful magnet  251  to enable the bulb base  20  magnetically positioned on the base plate  10 . In the preferred embodiment of the invention, the socket  24  is a coaxial annular metallic base, with a connecting point formed inside to become a non-polar contact. Plural magnetic units  25  are additionally built on the heat dispersing portion  23 . And the bulb base  20  can have the surface polished to enhance light reflection. 
         [0019]    The LED light emitting module  30  is detachable and installed on the bottom plate  21  of the bulb base  20 . The LED light emitting module  30  is provided with a base  31  made of aluminum, a circuit board  32  inserted in one side of the base  31  corresponding to the bottom plate  21 , and a steel ring  33  and a heat dispersing rubber washer  34  attached on one side of the base  31  opposite to the bottom plate  21 . In addition, plural LEDs  321  and a circuit driving unit  322  are located on one side of the circuit board  32  opposite to the bottom plate  21 , and a power plug  323  is positioned on one side of the circuit board  32  facing to the bottom plate  21  and inserted through the base  31 . In the preferred embodiment of the invention, the power plug  323  is a coaxial annular metallic terminal used to engage with the socket  24  freely in any angle. By means of the steel ring  33  magnetically combined with the powerful magnets  251  of the bulb base  20 , the LED light emitting module  30  is fixed with the bulb base  20 . Instead of magnetic combination, the LED light emitting module  30  can also be fixed with the bulb base  20  by screwing up or locking up, but not limited. 
         [0020]    The lamp hood  40  is made of transparent acrylic, shaped similar to a round plate for matching with the bulb base  20 , permissible to be decorated with a picture (not shown in Figs.) so as to project the picture on the ground after being lit up by the LED light emitting module  30 . The lamp hood  40  is provided with a steel ring  41  fitted around the outmost circumference for being magnetically combined with the heat dispersing portion  23 , so that the lamp hood  40  can be magnetically stabilized on the bulb base  20 . 
         [0021]    The lamp cap  50  is integrally made of a transparent material, fixed on the top of the LED light emitting module  30 . The lamp cap  50  is provided with plural notches  51  cut in the circumference for a user to maintain conveniently while disassembling the LED light emitting module  30  and the lamp cap  50  from the bulb base  20 . 
         [0022]    In assembling, as shown in  FIG. 4 , the integral lamp  100  is for instance to be installed on a ceiling. The base plate  10  is first positioned on the ceiling. Next the bulb base  20 , the LED light emitting module  30  and the lamp hood  40  are successively fitted to the base plate  10 , conveniently combined together by magnetic attraction; they can naturally be disassembled as easily as being assembled. And as the bulb base  20  is integrally made of aluminum and closely combined with the LED light emitting module  30 , the heat generated by the LED light emitting module  30  can directly travel through the base  31  and the heat dispersing rubber washer  34  to the bottom plate  21  and the heat dispersing portion  23  of the bulb base  20  so as to quickly scatter into the atmosphere, needing no extra heat dispersing means, such as heating dispersing fins or tubes. Thus the integral lamp  100  has a simple structure and manufacturing process, and a low cost. 
         [0023]    Moreover, a detector  26 , such as a human detector, a fire detector, an earthquake detector or other warning detectors, can be fixed on the bulb base  20 . 
         [0024]    Further, as the LED light emitting module  30  and the bulb base  20  are merely combined together by magnetic attraction, they can be easily separated apart as long as the power plug  323  is pulled out of the socket  24 . So can the LED light emitting module  30  be replaced with a new one if it breaks down. It should be noticed that if the integral lamp  100  does not work, it is mostly due to the damage of the light source as it is the weakest component in the integral lamp  100 . That is, the power source component (AC/DC power conversion circuit and constant current circuit) is a component not apt to get damaged. Thus it is only necessary to replace the damaged component with a new one instead of throwing away the whole lamp, not only saving money for users, but also lessening waste to be friendly to environment. Furthermore, by changing light color, brightness and watts of bulbs, a user can choose and change the LED light module  30  freely. 
         [0025]      FIG. 5  shows a second preferred embodiment of an integral lamp  100  with a replaceable light source in the present invention, having most components the same as those of the first embodiment does. The different point is that the integral lamp  100  is a recessed light inserted in a decorating ceiling  200 . The decorating ceiling  200  is bored with an opening  201  to accommodate the integral lamp  100 , with plural U-shaped steel plates  202  clamping the decorating ceiling  200  around the opening  201  for being magnetically attracted by the magnetic units  25  to make the bulb base  20  attached with the decorating ceiling  200 . As described in the first embodiment, the LED light emitting module  30  and the lamp hood  40  are orderly installed on the bulb base  20 , magnetically attracted by the magnetic units  25 ; and the heat generated by the LED light emitting module  30  can be dispersed into atmosphere by the bulb base  20 . 
         [0026]      FIG. 6  shows a third preferred embodiment of an integral lamp  100  with a replaceable light source in the present invention, having most components the same as those of the first embodiment does. The different point is that the integral lamp  100  is an LED bulb, provided with a bulb base  60  and an LED light emitting module  70 . The bulb base  60  is integrally made of aluminum, provided with a metallic threaded portion  61  formed at one side, an aluminum supporting plate  62  extended inward from another side, plural magnetic units  63  and a socket  64  fixed on the supporting plate  62 . The LED light emitting module  70  has an annular steel plate  71  and a power plug  72  located at the bottom to respectively correspond to the magnetic units  63  and the socket  64  so as to magnetically combine with the supporting plate  62  of the bulb base  60  and get electrically connected. In addition, a heat dispersing rubber washer  73  is attached to the interior of the annular steel plate  71 , employed to conduct the heat through the bulb base  60  to scatter out. 
         [0027]      FIG. 7  shows a fourth preferred embodiment of an integral lamp  100  with a replaceable light source in the present invention, having most components the same as those of the first embodiment does. The different point is that the integral lamp  100  is an LED fluorescent lamp, provided with a bulb base  80  and an LED light emitting module  90 . The bulb base  80  is integrally made of aluminum, provided with plural magnetic units  81  and a socket  82  fixed on a bottom surface. The LED light emitting module  90  has an annular steel plate  91  and a power plug  92  located at the bottom to respectively correspond to the magnetic units  81  and the socket  82  so as to magnetically combine with the bulb base  80  and get electrically connected. In addition, a heat dispersing rubber washer  93  is attached to the bottom of the LED light emitting module  90  to conduct the heat generated by the LED light emitting module  90  through the bulb base  80  to scatter out. 
         [0028]    The invention has the following advantages as can be seen from the foresaid description. 
         [0029]    1. With the LED light emitting module closely combined with the bulb base made of good heat-dispersing aluminum, the heat generated by the LED light emitting module can be swiftly scattered into the atmosphere, without necessity for an extra heat dispersing means, able to simplify structure of the lamp and its manufacturing process for lowering cost. And the bulb base can be polished to enhance reflection of light. 
         [0030]    2. In the present integral lamp, the power source component and the light source component are independent from each other, but combined together by magnetic attraction, so they can be separated apart easily. In case LED bulbs break down, it just need to replace the light source component without necessity to replace the power source component that is not apt to get damaged. Thus not only can a user save money, but also waste can be shrunk to save energy. 
         [0031]    3. The technique of the bulb base used to scatter heat can be applied on a tube light, a disc light, a stair light and a conventional threaded bulb. 
         [0032]    4. With the bulb base and the lamp hood able to be designed variously, a user can install a lamp having a bulb base and a lamp hood with a proper color, shape and material as required. The lamp is not merely a lamp, but a decoration also. 
         [0033]    While the preferred embodiment of the invention has been described above, it will be recognized and understood that various modifications may be made therein and the appended claims are intended to cover all such modifications that may fall within the spirit and scope of the invention.