Patent Abstract:
A combinational inset lamp exempt from a shielding cylinder comprises a light-source body. The light-source body is covered by an insulation cover. An extension cover replaceable is provided at the top of insulation cover. An outer disk cover spirally removable and replaceable is provided outwards and transversally around the outer circumference of the lower part of insulation cover. At least opposite two sides of the outer circumferential wall of insulation cover are respectively formed outwards with an elastic clamping flake. The elastic clamping flake is removable and flexible so that the outer disk cover and the elastic clamping flake may work with each other to directly wedge the lamp onto the ceiling. Thus, the lamp that may be provided without any shielding cylinder is removable and replaceable conveniently for achievement of the advantages of carbon decrease, energy saving, and environmental protection.

Full Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     This invention relates to a combinational recessed lamp exempt from a shielding cylinder. 
     2. Description of the Related Art 
     An inset lamp is a lamp installed on the ceiling, and a luminous source, such as a tungsten lamp, an energy-saving light bulb, or a LED lamp, is provided in a shielding cylinder. The lamp is recessed into the ceiling, so it looks artistic and doesn&#39;t hurt people&#39;s eyes, thereby being widely used for indoor illumination. However, despite being the tungsten lamp, the energy-saving light bulb, or the LED lamp, the recessed lamp must work with the shielding cylinder and may thus be arranged on the ceiling, and the cost increases and the materials of shielding cylinder are wasted. 
     Consequently, because of the technical defects of described above, the applicant keeps on carving unflaggingly through wholehearted experience and research to develop the present invention, which can effectively improve the defects described above. 
     SUMMARY OF THE INVENTION 
     This invention relates to a combinational recessed lamp exempt from a shielding cylinder that may be embed into an inset hole on the ceiling and comprises a light-source body. The light-source body is covered by an insulation cover. An outer disk cover is provided stretching outwards and transversally from the outer circumference of a lower part of the insulation cover. Further, at least opposite two sides of the outer circumferential wall of insulation cover that are respectively provided outwards with an elastic clamping flake that is removable. With the above-mentioned structure, the outer disk cover and the elastic clamping flake that work with each other may be used to directly wedge the lamp according to this invention onto the ceiling. Thus, the lamp that may be provided without any shielding cylinder is removable and replaceable conveniently for achievement of the advantages of carbon decrease, energy saving, and environmental protection. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a 3D exploded view of a preferred embodiment of this invention; 
         FIG. 2  is a 3D assembly view of a preferred embodiment of this invention; 
         FIG. 3  is a sectional assembly view of a preferred embodiment of this invention; 
         FIG. 4  is a schematic view illustrating a recessed lamp that is arranged on the ceiling in a preferred embodiment of this invention; 
         FIG. 5  is a 3D assembly view of another preferred embodiment of this invention; 
         FIG. 6  is a 3D assembly view of a further embodiment of this invention; 
         FIG. 7  is a schematic view illustrating the lamp according to this invention that is applied to a lamp bulb mount; and 
         FIG. 8  is a schematic view illustrating the lamp according to this invention that is applied to an energy-saving lamp bulb. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Now, the present invention will be described more specifically with reference to the following embodiments. It is to be noted that the following descriptions of preferred embodiments of this invention are presented herein for purpose of illustration and description only; it is not intended to be exhaustive or to be limited to the precise form disclosed. 
     Firstly, with reference to  FIGS. 1 through 3  respectively shown as a 3D exploded view, a 3D assembly view, and an assembly sectional view, an inset lamp in a preferred embodiment of this invention comprises a light-source body  10 , a lamp cover  20 , an insulation cover  30 , and an extension cover  40 . 
     The light-source body  10  further comprises a heat dissipation part  11 , a drive circuit board  12 , and a LED lamp board  13 . 
     The heat dissipation part  11  is metallic and is arranged lengthways in the form of a cylinder, and its center is formed with a rectangular thru hole  111  that is formed axially with four sidewalls  1111 , in which a concave wedge slot  1112  is formed axially on the two sidewalls  1111  opposite to each other. Further, a plurality of fins  112  is formed axially around the outer circumference of heat sink part  11 . A plurality of annular grooves  113  are formed in a radial direction around the outer circumference of heat dissipation part  11 . Further, a plurality of convection vents  114  are axially formed in the heat dissipation part  11  around the thru hole  111  for heat convection and heat dissipation acceleration. 
     The drive circuit board  12  may be lengthways mounted into the thru hole  111  of heat dissipation part  11 , and a power cord  121  is provided at an upper side and an insertion slot  122  is formed at a lower side. 
     The LED lamp board  13  is arranged transversally on a side below the heat dissipation part  11  and comprises a substrate  131 . The LED lamp board  13  on the top side of substrate  131  is provided with a plug  132  to connect to the insertion slot  122  of drive circuit board  12 . Besides, a plurality of LEDs  133  are provided on the bottom side of substrate  131  of the LED lamp board  13 . 
     The lamp cover  20  is arranged below the LED lamp board  13  and is formed into a mouth facing upwards; it is a round cover formed with an annulus wall and allows light transmission; a shoulder region  21  is formed around the outer circumference of root edge of the cover  20 . Further, an optics curved surface  22  is formed at the bottom side of lamp cover  20  so that the cover  20  may be replaced with a proper lamp cover  20  having the optics curved surface  22  upon an actual demand. 
     The insulation cover  30  may wrap around the heat dissipation part  11  for fear of touch with the metallic heat dissipation part  11 . In the embodiment, the insulation cover  30  is further assembled with an upper insulation cover  31  and a lower insulation cover  32 . 
     The upper insulation cover  31  is in the form of a cylinder and wraps around the heat dissipation part  11  from top to bottom. Further, the circumferential wall of upper insulation cover  31  is formed in the shape of grille with a plurality of heat dissipation vent  311 . A plurality of annular flanges  312  opposite to the annular grooves  113  of heat dissipation part  11  are formed at the inner wall of upper insulation cover  311  and may wedge to each other for clamping. A top plate  313  is transversally arranged at the top of insulation cover  311  that is opposite to the top side of heat dissipation part  11  to prevent the top side of heat dissipation part  11  from being exposed for achievement of insulation. An outgoing line hole  314  is formed on the top plate  313  the bottom side of which is formed with a plurality of lugs  315  to bring a plurality of air gaps between the top plate  313  and the top of heat dissipation  11  for heat dissipation. 
     The lower insulation cover  32  is also in the form of a cylinder and wraps around the lower section of heat dissipation part  11  from bottom to top. The circumferential wall of lower insulation cover  32  is also formed in the shape of grille with a plurality of heat dissipation vents  321 . A plurality of annular flanges  32  opposite to the annular grooves  113  of heat dissipation part  11  are formed at the inner wall of lower insulation cover  322  and may wedge to each other for clamping. A convex shift limit flange  323  is provided at the shoulder region  21  of lamp cover  20  that is opposite to the root edge of inner circumferential wall of the lower insulation cover  32  to prevent the lamp cover  20  from shifting. Further, an outer disk cover  33  spirally removable and replaceable is provided outwards and transversally in the insulation cover  30  around the outer circumference of the lower part of lower insulation cover  32 . Next, an elastic clamping flake  34  is provided at each of opposite two sides of the insulation cover  30  around the outer circumferential wall of lower insulation cover  32  above the outer disk cover  33 . The elastic clamping flake  34  may be removable and may recover even if being deformed with an external force. A space substantially equal to the thickness of ceiling is formed between the elastic clamping flake  34  and the outer disk cover  33 . Each of the elastic clamping flakes  34  is a metallic elastic flake one end of which is a fixed end fixed in the direction of tangent onto the lower insulation cover  32  and the other end of which is a free end, and the bottom of each of the elastic clamping flakes  34  is convergent from the fixed end towards the free end. 
     The extension cover  40  is formed into a mouth facing downwards and with a round cover having an annular wall, and may be wedged onto the top of upper insulation cover  31 . A chamber  41  is provided in the extension cover  40  for members, such as rechargeable batteries (not shown). Here, the lamp according to this invention may be used for emergency. An outgoing line mount  42  is provided at one side of the extension cover  40  for a power cord  121  of the drive circuit board  12  to connect to. 
     Again, with reference to  FIGS. 1 and 3 , when the lamp according to this invention is ready for assembly, firstly, a light-emitting body  10  is assembled, the drive circuit board  12  is placed in the thru hole  111  of heat dissipation part  11 , and two sides of the drive circuit board  12  is wedged into the wedge slots  1112  of heat dissipation part  11  for fixing. Then, the plug  132  of LED lamp board  13  is plugged into the insertion slot  122  of drive circuit board  12 , the LED lamp board  13  is thus arranged on the bottom surface of heat dissipation part  11 , and the bottom sides of LEDs  133  are made to touch the heat dissipation part  11 . Then, the lamp cover  20  is placed in the lower insulation cover  32 , the lower insulation cover  32  is made to wrap around the lower section of heat dissipation part  11  from bottom to top, and thus the lamp cover  20  is made to exactly cover the LED lamp board  13 . Next, the upper insulation cover  31  is made to wrap around the upper section of heat dissipation part  11  from top to bottom and to wedge to the lower insulation cover  32 . Next, the outer disk cover  33  is spirally fixed onto the lower insulation cover  32 . Finally, the power cord  121  of drive circuit board  12  is connected to the outgoing line mount  42  of the extension cover  40  and the extension cover  40  is wedged onto the top of upper insulation cover  31 , thereby the assembly procedure being finished. 
     With reference to  FIG. 4  shown as a schematic view illustrating the lamp according to this invention arranged on the ceiling, when the lamp according to this invention is installed in an inset hole  201  of the ceiling  200 , the elastic clamping flake  34  of the lamp according to this invention is just bent inwards and then the lamp according to this invention is placed into the inset hole  201  of the ceiling from bottom to top. At this time, when the elastic clamping flake  34  bounces outwards, it works with the outer disk cover  33  to limit the shift of ceiling  200 . Further, the area of outer disk cover  33  is definitely wide to cover the differently sized inset hole  201  of the ceiling  200 , thereby the installation being finished. 
     Contrarily, to remove the lamp according to this invention from the inset hole  201  of the ceiling  200 , the lamp according to this invention is revolved in a reverse direction only towards the free end of elastic clamping flake  34  from the top down. Being convergent, the bottom of elastic clamping flake  34  led by the inset hole  201  is bent inwards by degree until the lamp according to this invention is fully removed from the inset hole  201  of the ceiling  200 , thereby the removal being finished. 
     With reference to  FIG. 5  shown as a 3D assembly view of another preferred embodiment of this invention, the elastic clamping flake  35  according to this invention is a metallic flake in the form of a rhombus, the middle region of which is lengthways fixed onto the lower insulation cover  32  and the left and right sides of which are formed into free ends. 
     With reference to  FIG. 6  shown as a 3D assembly view of a further preferred embodiment of this invention, an outer disk cover  36  is spirally fixed to the outer circumference of a lower part of the lower insulation cover  32  of insulation cover  30 . The outer disk cover  36  is in the form of a petal and thus the lamp according to this invention is diverse. 
     Next, with reference to  FIGS. 6 and 7  respectively shown as a 3D assembly view of a further preferred embodiment of this invention and as a schematic view illustrating the lamp according to this invention applied to a lamp bulb mount, the top of extension cover  40  according to this invention may be changed into a universal spiral connector  43  for a lamp bulb mount so that the lamp according to this invention may be spirally fixed onto a general lamp bulb mount  300 . Next, the outer disk cover  36  is removed so that the lamp according to this invention may herein be used as a lamp bulb. 
     Next, with reference to  FIG. 8  shown as a schematic view illustrating the lamp according to this invention applied to an energy-saving lamp bulb, in this embodiment, a light-source body  50  according to this invention is an energy-saving lamp bulb. The light-source body  50  is provided with a base  51  the exterior of which is formed with outer threads  511  so that the outer circumference of light-source body  50  may be spirally fixed onto the top of an insulation cover  60  with inner threads  61 . Further, an outer disk cover  62  is spirally fixed to the outer circumference of the lower part of insulation cover  60 . 
     While the invention has been described in terms of what is presently considered to be the most practical and preferred embodiments, it is to be understood that the invention needs not be limited to the disclosed embodiment. On the contrary, it is intended to cover various modifications and similar arrangements included within the spirit and scope of the appended claims which are to be accorded with the broadest interpretation so as to encompass all such modifications and similar structures.

Technology Classification (CPC): 5