Patent Publication Number: US-9885460-B2

Title: Light assembly

Description:
BACKGROUND OF THE INVENTION 
     1. Fields of the Invention 
     The present invention relates to a light assembly, and more particularly, to a light assembly with adjustable reflection members. 
     2. Descriptions of Related Art 
     The conventional light assembly generally comprises a support unit and a rotary unit, wherein the support unit has a body and a Light Emitting Diode on the support unit. The body has a first lip on the outside thereof, and threads. The rotary unit has a tube and a convex lens in the tube. The tube has a first cover on one end thereof, a room and two second lips formed in the inside of the tube. One of the second lips has inner threads, and the other second lip is formed to the first cover which has a hole enclosed by the second lip. The rotary unit is axially movable between a first position and a second position relative to the support unit. When the rotary unit is moved to the first position, the first lip contacts one of the second lips, and the convex lens is located close to the LED. When the rotary unit is moved to the second position, the first lip contacts the other second lip, and the convex lens is moved away from the LED. However, due to the length of the LED, the adjustable distance between the first and second positions is limited, so that the adjustable distance of the focus is limited and cannot obtain satisfied affect. Similarly, due to the length of the LED, the adjustable distance between the first and second positions is limited, so that the adjustable distance of the focus between the convex lens and the LED is limited. Besides, because the LED is movable relative to the convex lens, the LED cannot installed to the base of the convex lens, therefore, the light beams cannot be projected precisely. 
     The present invention intends to provide a light assembly with a focus adjustable device to eliminate the shortcomings mentioned above. 
     SUMMARY OF THE INVENTION 
     The present invention relates to a light assembly and comprises a case, a light member, an adjustment unit and a reflection unit. The light member is located on the support member at the center of the case, and the adjustment unit and the reflection unit are located within the case. The reflection unit includes multiple first reflection members, and multiple second reflection members. The light member is located at the position surrounded by the respective root portions of the first and second reflection members. The first and second reflection members are pivoted relative to the light member when the adjustment unit is operated. 
     The present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, a preferred embodiment in accordance with the present invention. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is an exploded view of a portion of the light assembly of the present invention; 
         FIG. 2  is a perspective view to show that the parts in  FIG. 1  are assembled; 
         FIG. 3  is a top view of  FIG. 2 ; 
         FIG. 4  is another exploded view of the light assembly of the present invention; 
         FIG. 5  is a perspective view to show the first base of the present invention; 
         FIG. 6  is a perspective view to show the second base of the present invention; 
         FIG. 7  is a perspective view to show the light assembly of the present invention wherein the restriction part and the cover are removed; 
         FIG. 8  is a perspective view to show the light assembly of the present invention wherein the restriction part and the cover installed; 
         FIG. 9  is a top of the light assembly of the present invention; 
         FIG. 10  is a cross sectional view, taken along line A-A in  FIG. 9 ; 
         FIG. 11  is a cross sectional view, taken along line A-A in  FIG. 9 , wherein the first and second reflection members are pivoted relative to the light member; 
         FIG. 12  shows that the first and second reflection members are pivoted relative to the light member, wherein the restriction part and the cover are removed; 
         FIG. 13  shows that the first and second reflection members are pivoted relative to the light member, wherein the restriction part and the cover installed, and 
         FIG. 14  is a perspective view to show another embodiment of the light assembly of the present invention. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     Referring to  FIGS. 1 to 6 , the light assembly of the present invention comprises a case  10  having a support member  11  at the center thereof. The case  10  has a first pivotal portion  12  on one of four side thereof, are two second pivotal portions  13  are located on two of the four sides of the case  10 . The first pivotal portion  12  is located between the first pivotal portion  12 . The two second pivotal portions  13  are symmetrical relative to the support member  11 . The first and second pivotal portions  12 ,  13  are located on three of the four sides relative to the support member  11 . Two respective axes of the two second pivotal portions  13  are parallel to each other and are perpendicular to the axis of the first pivotal portion  12 . The support member  11  has multiple first connection portions  14  and multiple second connection portions  15 . There are four first connection portions  14  and four second connection portions  15 , wherein the four first connection portions  14  are connected to four sides of the support member  11 , and the four second connection portions  15  are located at four corners of the support member  11 . The first and second connection portions  14 ,  15  each are a threaded hole. A light member  17  is connected to the support member  11 , and can be a Light Emitting Diode or any other lighting means. 
     An adjustment unit  20  is pivotably connected to the inside of the case  10 , and has a first gear set  21  and two second gear sets  22 . The first gear set  21  is pivotably connected to the first pivotal portion  12 , and a knob  211  is connected to one end of the first gear set  21  and the knob  211  protrudes beyond the case  10  so as to be operated by users. Two first bevel gears  212  and two first mounting member  213  are connected to the first gear set  21 . The first mounting members  213  are located corresponding to the first pivotal portion  12 . The two first mounting members  213  are located between the two first bevel gears  212 . Each second gear set  22  is pivotably connected to the second pivotal portion  13  corresponding thereto. A second bevel gear  221  is connected to one end of each second gear set  22  and engaged with the first bevel gear  212  corresponding thereto. The second gear sets  22  each have a second gear  222  and two second mounting members  223 , the second gear  222  is located between the two second mounting members  223  which are located corresponding to the second pivotal portion  13 . 
     Multiple connection members  30  are respectively connected to the first and second pivotal portions  12 ,  13  to pivotally connect the first gear set  21  to the first pivotal portion  12 , and to pivotally connect the second gear sets  22  to the second pivotal portions  13 . The first mounting members  213  are located between the connection members  30  and the first pivotal portion  12 . The second mounting members  223  of each second gear set  22  are located between the connection members  30  and the second pivotal portion  13  corresponding thereto. There are six connection members  30  and each connection member  30  is a U-shaped member. Each of the first and second pivotal portions  12 ,  13  has threaded holes, and each connection member  30  has two threading members which are connected to the threaded holes to connect the connection members  30  to the first and second pivotal portions  12 ,  13 . The first mounting members  213  are bearings, and the second mounting members  223  are sleeves so that the first mounting members  213  reduce friction between the first gear set  21  and the first pivotal portion  12 , and the second mounting members  223  reduce friction between the second gear set  22  and the second pivotal portion  13 . 
     As shown in  FIGS. 2 and 3 , when the case  10 , the adjustment unit  20  and the connection members  30  are installed, the first gear set  21  is pivotably connected to the first pivotal portion  12  of the case  10 , and the knob  211  is exposed beyond the case  10 . The first mounting members  213  are located corresponding to the first pivotal portion  12 . The two second gear sets  22  are pivotably connected to the second pivotal portions  13 . The second bevel gear  221  is engaged with the first bevel gear  212  corresponding thereto. The two second mounting members  223  which are located corresponding to the second pivotal portion  13 . 
     A reflection unit  40  is pivotably connected to the inside of the case  10 , and has multiple first reflection members  41  and multiple second reflection members  42 . The light member  17  is located at the position surrounded by respective root portions of the first and second reflection members  41 ,  42 . An angle of the first and second reflection members  41 ,  42  is adjustable relative to the light member  17  by operation of the adjustment unit  40 . The first and second reflection members  41 ,  42  are simultaneously moved relative to the light member  17  when the adjustment unit  20  is operated. The light member  17  is a Light Emitting Diode. 
     The first and second reflection members  41 ,  42  are respectively and resiliently connected to the first and second connection portions  14 ,  15 . The first and second reflection members  41 ,  42  are located around the support member  11  and the light member  17 . The first and second reflection members  41 ,  42  are located alternatively to each other and in contact with each other. Each second reflection member  42  contacts the underside of each of the two first reflection members  41  on two sides thereof. The number of the first reflection members  41  is the same as that of the first pivotal portion  14 , and the number of the second reflection members  42  is the same as that of the second pivotal portions  42 . The first reflection members  41  each have a first base  411 , a first reflection plate  412 , a first resilient member  413  and a first installation member  414 . As shown in  FIG. 5 , the first base  411  is fixed to the first connection portion  14 . The first reflection plate  412  is pivotably connected to the first base  411 . The first resilient member  413  is connected to the first base  411  and biases the first reflection plate  412  to resiliently connect the first refection member  41  to the first connection portion  14 . The first installation member  414  is connected to the first connection portion  14  to fixedly connect the first base  411  to the first connection portion  14 . 
     The second reflection members  42  each have a second base  421 , a second reflection plate  422 , a second resilient member  423  and a second installation member  424 . The second base  421  is fixed to the second connection portion  15 . The second reflection plate  422  is pivotably connected to the second base  421 . The second resilient member  423  is connected to the second base  421  and biases the second reflection plate  422  to resiliently connect the second refection member  42  to the second connection portion  15 . Each second reflection plate  422  contacts two respective undersides of the two first reflection plates  412 . The second installation member  424  is connected to the second connection portion  15  to fixedly connect the second base  421  to the second connection portion  15 . 
     A restriction part  50  is connected to the case  10  and has a room  51  defined therein. The first pivotal portion  12 , the second pivotal portions  13 , the light member  17 , the adjustment unit  20 , the connection members  30  and the reflection unit  40  are located in the room  51 . The restriction part  50  has two toothed portions  52  respectively located on two insides thereof. The toothed portions  52  are engaged with the second gears  222  of the second gear sets  22  respectively. Each of the toothed portions  52  is a straight toothed portion. A top surface  53  is formed on the top of the restriction part  50 . The first and second reflection plates  412 ,  422  contact the top surface  53 . The restriction part  50  has a flange  54  extending from one side of the lower end thereof and located away from the top surface  53 . The restriction part  50  is a hollow and rectangular part. When the restriction part  50  is moved away from or close to the case  10 , the first and second reflection members  41 ,  42  that are in contact with the top surface  53  of the restriction part  50  pivot relative to the light member  17  so as to achieve different optical features such as focus adjustment. A rectangular cover  60  is mounted to outside of the restriction part  50  and connected to the case  10 . The cover  60  has a through hole  61  and a restriction portion  62 , the restriction part  50  partially extends through the through hole  61  of the cover  60 . The restriction portion  62  restricts the flange  54  to restrict the restriction part  50  from dropping from the cover  60 . 
     As shown in  FIGS. 7 and 8 , the knob  211  is exposed beyond the case  10  for being operated by the users. The second bevel gear  221  is engaged with the first bevel gear  212  corresponding thereto. The first and second reflection members  41 ,  42  are respectively and resiliently connected to the first and second connection portions  14 ,  15 . The first and second reflection members  41 ,  42  are located around the support member  11  and the light member  17 . The first and second reflection members  41 ,  42  are located alternatively to each other and in contact with each other. The light member  17  is located to be surrounded by the four first reflection members  41  and four second reflection members  42 . The first pivotal portion  12 , the second pivotal portions  13 , the light member  17 , the adjustment unit  20 , the connection members  30  and the reflection unit  40  are located in the room  51 . The rectangular cover  60  is mounted to the outside of the restriction part  50  and connected to the case  10 . The cover  60  has a through hole  61  and a restriction portion  62 , the restriction part  50  partially extends through the through hole  61  of the cover  60 . The restriction portion  62  restricts the flange  54  to restrict the restriction part  50  from dropping from the cover  60 . 
     As shown in  FIGS. 9 and 10 , the second gears  222  of the second gear sets  22  are engaged with the toothed portions  52  of the restriction part  50 . The first and second reflection plates  412 ,  422  are biased by the first and second resilient members  413 ,  423  to contact the top surface  53 . 
     As shown in  FIG. 11 , when the knob  211  is rotated, the first and second reflection plates  412 ,  422  are pivoted relative to the light member  17 , the knob  211  drives the first gear set  21  to rotate. The first bevel gears  212  are engaged with the second bevel gears  221  so that the second gear sets  22  are rotated, the second gears  222  are engaged with the two toothed portions  52 . When the second gears  222  are rotated, the restriction part  50  is moved away from or close to the case  10  so that the first and second reflection members  41 ,  42  are pivoted relative to the light member  17  to change and adjust the optical features. 
     As shown in  FIGS. 12 and 13 , comparted with the disclosures in  FIGS. 7 and 8 , when the knob  211  is rotated, the second gears  222  are engaged with the toothed portions  52 , so that the rotation of the adjustment unit  20  moves the restriction part  50  relative to the case  20  to adjust the angles of the first and second reflection members  41 ,  42  relative to the light member  17 . The restriction part  50  extends through the through hole  61  of the cover  60 , the flange  54  of the restriction part  50  is restricted by the restriction portion  62 , the restriction part  50  does not separate from the cover  60 . 
     As shown in  FIG. 14 , the restriction part  50  has an opening  55 , and the first and second reflection plates  412 ,  422  contact the top surface  53  of the restriction part  50 . 
     The present invention includes the following advantages, wherein the operation to the knob  211  can adjust the angles of the first and second reflection members  41 ,  42  relative to the light member  17  so as to achieve different optical features, such as the focus adjustment. The light member  17  is located such that the first and second reflection members  41 ,  42  surround the light member  17 , the reflection of the light beams from the light member  17  are more precise. The restriction part  50  is moved away from or close to the case  10  to adjust the angles of the first and second reflection members  41 ,  42  that contact the top surface  53 . By rotating the knob  211 , the movement of the restriction part  50  can be adjusted. The knob  211  is rotated, the second gears  222  are engaged with the toothed portions  52 , so that the rotation of the adjustment unit  20  moves the restriction part  50  relative to the case  20  to adjust the angles of the first and second reflection members  41 ,  42  relative to the light member  17 . The toothed portions  52  each have at least ten teeth so that the distance that the restriction part  50  moves relative to the case  10  is sufficient. The flange  54  of the restriction part  50  is restricted by the restriction portion  62 , the restriction part  50  does not separate from the cover  60 . 
     While we have shown and described the embodiment in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.