Abstract:
A light-emitting diode lamp comprises a supporting salver comprising a first and second surfaces, the second surface defines first recesses; light-emitting diodes (LEDs) mounted on the first surface; a lampshade covering the light-emitting diodes, the lampshade comprising an optic portion facing the LEDs, the optic portion comprising lenses, each of the lenses facing each of the LEDs, the lampshade defining second recesses corresponding to the first recesses, each of the first recesses aligned with each of the second recesses; and clips each comprising a connecting portion and two buckling portions at two opposite ends of the connecting portion, the connecting portion being resilient, one of the two buckling portions being received in one of the first recesses, another one of the two buckling portions being received in a corresponding one of the second recesses, wherein the lampshade is interchangeably mounted on the supporting salver through the clips.

Description:
BACKGROUND 
       [0001]    1. Technical Field 
         [0002]    The present disclosure generally relates to illuminating apparatus, and particularly to a light-emitting diode lamp having an improved adaptability. 
         [0003]    2. Description of Related Art 
         [0004]    light-emitting diodes (LEDs), available since the early 1960&#39;s and, because of their high light-emitting efficiency and long life span, have been increasingly used. According to Illuminating Engineering Society of North America (IESNA), illumination distribution of lighting used in certain locations, such as squares, sidewalks, yards, parks, or parking lots, must meet the standards of Type IV or Type V. These two types of standards require that the light illuminating on the locations has a circular or square pattern, in which the light source is located at a center of the pattern. However, light directly emitted from the LEDs usually cannot meet such a requirement. To meet the requirement, lenses capable of modulating light distribution of the LEDs may be used. 
         [0005]    The lens is generally mounted on the LED through screw or glue and not readily to be removed from the LED. Therefore, once the lens is mounted on LED, the light distribution of the LED is fixed. Different LED lamps with different lenses may be required to meet different requirements of light distribution patterns. As a result, additional manufacturing processes and added cost may be required. 
         [0006]    What is needed, therefore, is an LED lamp which can overcome the disadvantages as described above. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0007]      FIG. 1  is an isometric, assembled view of an LED lamp in accordance with a first embodiment of the present disclosure. 
           [0008]      FIG. 2  is an exploded view of the LED lamp of  FIG. 1 . 
           [0009]      FIG. 3  is a bottom view of a supporting salver of the LED lamp of  FIG. 1 . 
           [0010]      FIG. 4  is a top view of a lampshade of the LED lamp of  FIG. 1 . 
           [0011]      FIG. 5  is a cross-sectional view of the lampshade of  FIG. 4 , taken along line IV-IV thereof. 
           [0012]      FIG. 6  is a cross-sectional view of the lampshade of  FIG. 4 , taken along line V-V thereof. 
           [0013]      FIG. 7  is a bottom view of the lampshade of  FIG. 1 . 
           [0014]      FIG. 8  is a top view of a lampshade of an LED lamp in accordance with a second embodiment of the present disclosure. 
           [0015]      FIG. 9  is a cross-sectional view of the lampshade of  FIG. 8 , taken along line VIII-VIII thereof. 
           [0016]      FIG. 10  is a cross-sectional view of the lampshade of  FIG. 8 , taken along line IX-IX thereof. 
           [0017]      FIG. 11  is a bottom view of the lampshade of the LED lamp of  FIG. 8 . 
           [0018]      FIG. 12  is a top view of a lampshade of an LED lamp in accordance with a third embodiment of the present disclosure. 
           [0019]      FIG. 13  is a cross-sectional view of the lampshade of  FIG. 12 , taken along line XII-XII thereof. 
           [0020]      FIG. 14  is a cross-sectional view of the lampshade of  FIG. 12 , taken along line XIII-XIII thereof. 
           [0021]      FIG. 15  is a bottom view of the lampshade of the LED lamp of  FIG. 12 . 
           [0022]      FIG. 16  is a top view of a lampshade of an LED lamp in accordance with a fourth embodiment of the present disclosure. 
           [0023]      FIG. 17  is a cross-sectional view of the lampshade of  FIG. 16 , taken along line XVI-XVI thereof. 
           [0024]      FIG. 18  is a cross sectional view of the lampshade of  FIG. 16 , taken along line VXII-VXII thereof. 
           [0025]      FIG. 19  is a bottom view of the lampshade of the LED lamp of  FIG. 16 . 
           [0026]      FIG. 20  is a top view of a lampshade of an LED lamp in accordance with a fifth embodiment of the present disclosure. 
           [0027]      FIG. 21  is a cross-sectional view of the lampshade of  FIG. 20 , taken along line XX-XX thereof. 
           [0028]      FIG. 22  is a cross sectional view of the lampshade of  FIG. 20 , taken along line XXI-XXI thereof. 
           [0029]      FIG. 23  is a bottom view of the lampshade of the LED lamp of  FIG. 20 . 
       
    
    
     DETAILED DESCRIPTION 
       [0030]    Referring to  FIGS. 1 to 3 , a light-emitting diode (LED) lamp  10  in accordance with a first embodiment of the present disclosure is shown. The LED lamp  10  comprises a supporting salver  11 , a plurality of LEDs  12  mounted on the supporting salver  11 , a lampshade  13  mounted on the supporting salver  11  and covering the plurality of LEDs  12 , and a plurality of clips  14  detachably mounting the lampshade  13  on the supporting salver  11 . 
         [0031]    The supporting salver  11  is elongated and substantially rectangular. The supporting salver  11  comprises a supporting plate  111  and an annular sidewall  112  extending upwardly from an edge of the supporting plate  111 . An annular receiving slot  113  is defined in a top of the sidewall  112 . The supporting plate  111  comprises a first surface  1111  and a second surface  1112  opposite to each other. The sidewall  112  is formed on the first surface  1111  and encircling the plurality of LEDs  12 . A plurality of heat dissipation members  115  extend downwardly from the second surface  1112  of the supporting plate  111 . The supporting plate  111  defines a plurality of first recesses  114  in two opposite edges of the second surface  1112 . Each of the plurality of first recesses  114  is strip-shaped along the edge of the second surface  1112 . 
         [0032]    The plurality of LEDs  12  are arranged on the first surface  1111  of the supporting plate  111  in array via a printed circuit board. Heat generating by each of the plurality of LEDs  12  is transferred to the supporting plate  111  and dissipated through the plurality of heat dissipating members  115 . In this embodiment, the plurality of LEDs  12  are arranged in two rows along a length direction of the supporting salver  11 . 
         [0033]    The lampshade  13  is substantially rectangular. A shape of the lampshade  13  matches that of the supporting plate  111 . The lampshade  13  comprises a rectangular main body  131 , an optic portion  132  at a middle portion of the main body  131  and an annular flange  133  formed at an edge of the main body  131 . The main body  131  defines a plurality of ventilation holes  136  in two opposite end portions thereof. The plurality of ventilation holes  136  runs through the main body  131  for heat dissipation and ventilation. The lampshade  13  further defines a plurality of second recesses  134  in two opposite edges of a top surface corresponding to the plurality of first recesses  114  of the supporting salver  11 . Each of the plurality of second recesses  134  of the lampshade  13  is strip-shaped and aligned with each of the plurality of first recesses  114  of the supporting salver  11 . The lampshade  13  also acts as a dustproof cover for the plurality of LEDs  12 . 
         [0034]    Each of the plurality of clips  14  is substantially C-shaped and formed through bending a metal strip integrally. In other embodiment, the clip can be made in resilient plastic materials, such as polyvinyl chloride (PVC), et al. Each of the plurality of clips  14  comprises a curved connecting portion  141  and two buckling portions  142  formed at two opposite ends of the connecting portion  141 . Each of the two buckling portions  142  is V-shaped. The two buckling portions  142  face each other with their pointed portions. A distance between the two bucking portions  142  is less than a sum of thicknesses of the supporting salver  11  and the lampshade  13  when the plurality of clips are  14  in natural states without deformation. The connecting portion  141  and the two buckling portions  142  are resilient. The distance between the two buckling portions  142  is adjustable via resilient deformation of the connecting portion  141 . 
         [0035]    Referring to  FIGS. 4 to 7 , the optic portion  132  comprises a plurality of lenses  135  formed thereon for adjusting light distribution of the plurality of LEDs  12 . The plurality of lenses  135  are arranged in an array, in this embodiment the plurality of lens  135  are arranged in two rows along a length direction of the lampshade  13 . Each of the plurality of lenses  135  is aligned with one of the plurality of LEDs  12 . The lampshade  13  is formed integrally through mold injection. In other embodiment, the lampshade  13  also can be formed through thermosetting molding, i.e. a material of the lampshade  13  is heated up and simultaneously pressed to form an accurate optic portion  132 . 
         [0036]    Each of the plurality of lenses  135  comprises a light receiving surface  1351  and a light output surface  1352  opposite to each other. Light emitted by the plurality of LEDs  12  radiates into the plurality of lens  135  through the light receiving surface  1351  and radiates out of the plurality of lens  135  through the light output surface  1352 . The light of the plurality of LEDs  12  is refracted at the light output surface  1352 , and thus the light distribution of the plurality of LEDs  12  is changed. The light receiving surface  1351  is flat and positioned at the level adjacent to a bottom surface of the optic portion  132 . The light-output surface  1352  protrudes out of a top surface of the optic portion  132  convexly. A maximum thickness of each of the plurality of lens  135  between the light receiving surface  1351  and the light output surface  1352  is half as a height of the flange  133 . An orthographic projection of the plurality of lens  135  on the supporting plate  111  is substantially elliptical. Cross sections of the plurality of lens  135  respectively along length and width directions thereof are both arch-shaped. 
         [0037]    In assembly of the LED lamp  10 , the lampshade  13  is placed on the supporting salver  11  with the flange  133  thereof received in the receiving slot  113 . By this stage, each of the plurality of second recesses  134  of the lampshade  13  is aligned with each of the plurality of first recesses  114  of the supporting salver  11 . Each of the plurality of clips  14  is pushed towards the lampshade  13  and the supporting salver  11  from a lateral side of the lampshade  13  and the supporting salver  11  until one of the two buckling portions  142  of each of the plurality of clips  14  is received in each of the plurality of first recesses  114  of the supporting salver  11  and the other one of the two buckling portion  142  is received in corresponding one of the plurality of second recesses  134  of the lampshade  13 , thus mounting the supporting salver  11  and the lampshade  13  with each other in a dismountable way. Since the connecting portion  141  and the two buckling portions  142  are resilient, the plurality of clips  14  can be easily pulled out of the pluralities of first and second recesses  114 ,  134  of the supporting salver  11  and the lampshade  13 , thus detaching the lampshade  13  and the supporting salver  11  from each other. This facilitates replacement of the lampshade  13 . 
         [0038]      FIGS. 8 to 11  present a lampshade  23  of an LED lamp in accordance with a second embodiment of the present disclosure. The lampshade  23  is similar to that of the first embodiment but differs from that of the first embodiment in optic portion  232 . The optic portion  232  of the lampshade  23  comprises a plurality of lenses  235  arranged in an array. Each of the plurality of lenses  235  comprises a light receiving surface  2351  and a light output surface  2352  opposite to each other. The light receiving surface  2351  comprises a concave portion  2353  depressed in a middle portion thereof and an annular flat portion  2354  surrounding the concave portion  2353 . A cross section of the concave portion  2353  is arch-shaped. The light output surface  2352  is convex. The concave portion  2353  faces the plurality of LEDs  12 . An orthographic projection of each of the plurality of lenses  235  on the supporting plate  111  is substantially rectangular. Cross sections of each of the plurality of lenses  235  respectively along length and width directions of the optic portion  232  are both arch-shaped. 
         [0039]      FIGS. 12 to 15  present a lampshade  33  of an LED lamp in accordance with a third embodiment of the present disclosure. The lampshade  33  is similar to that of the first embodiment but differs from that of the first embodiment in optic portion  332 . The optic portion  332  of the lampshade  33  comprises a plurality of lenses  335  arranged in array. Each of the plurality of lenses  335  is drip-shaped and comprises a light receiving surface  3351  and a light output surface  3352  opposite to each other. The light receiving surface  3351  comprises a flat surface  3353  at one side thereof and a slantwise surface  3354  depressed in each of the plurality of lenses  335  slantways from an edge of the flat surface  3353  towards an opposite side thereof. The light output surface  3352  is convex. An orthographic projection of each of the plurality of lenses  335  on the supporting plate  111  is substantially rectangular. A cross section of each of the plurality of lenses  335  along a length direction of the lampshade  33  is arch-shaped. A cross section of each of the plurality of lens  335  along a width direction of the lampshade  33  is drip-shaped. 
         [0040]      FIGS. 16 to 19  present a lampshade  43  of an LED lamp in accordance with a fourth embodiment of the present disclosure. The lampshade  43  is similar to that of the first embodiment but differs from that of the first embodiment in optic portion  432 . The optic portion  432  of the lampshade  43  comprises a plurality of lenses  435  arranged in array. Each of the plurality of lenses  435  comprises a light receiving surface  4351  and a light output surface  4352  opposite to each other. The light receiving surface  4351  comprises a flat surface  4353  at one side thereof and a concave surface  4354  depressed in each of the plurality of lenses  435  slantways from an edge of the flat surface  4353  towards an opposite side thereof. The light output surface  4352  is convex. A curvature of the concave surface  4354  is equal to that of the light output surface  4352 . An orthographic projection of each of the plurality of lenses  435  on the supporting plate  111  is substantially rectangular. A cross section of each of the plurality of lenses  435  along a length direction of the lampshade  43  is arch-shaped. 
         [0041]      FIGS. 20 to 23  present a lampshade  54  of an LED lamp in accordance with a fifth embodiment of the present disclosure. The lampshade  54  is similar with that of the first embodiment but differs from that of the first embodiment in an optic portion  532 . The optic portion  532  comprises a plurality of first lenses  535  and a plurality of second lenses  536 . The plurality of first lenses  535  and the plurality of second lenses  536  are staggered in rows and columns. The plurality of first lenses  535  are identical to that of the second embodiment. The plurality of second lenses  536  are identical to that of the first embodiment. 
         [0042]    In the aforementioned embodiment, since the lampshade  13 ,  23 ,  33 ,  43 ,  53  are mounted on the supporting salver  11  in a dismountable way through the plurality of clips  14  and each of the lampshade  13 ,  23 ,  33 ,  43 ,  53  has a different optic portion  132 ,  232 ,  332 ,  432 ,  532 , the LED lamp  10  can change different lampshades  13 ,  23 ,  33 ,  43 ,  53  conveniently to generate different light distributions to meet different light distribution requirements without redesigns of the LED lamp. Therefore, waste is avoided. 
         [0043]    It is to be understood, however, that even though numerous characteristics and advantages of the exemplary embodiments have been set forth in the foregoing description, together with details of the structures and functions of the embodiments, the disclosure is illustrative only; and that changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the embodiments to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.