Patent Publication Number: US-10309631-B2

Title: Lamp

Description:
RELATED APPLICATIONS 
     This application is a divisional application of U.S. application Ser. No. 15/059,283, filed on Mar. 2, 2016, which claims priority to Taiwan Application Serial Number 104107956, filed Mar. 12, 2015, which is herein incorporated by reference. The entire disclosures of all the above applications are hereby incorporated by reference herein. 
    
    
     BACKGROUND 
     Field of Invention 
     The present invention relates to an illuminating device. More particularly, the present invention relates to a lamp. 
     Description of Related Art 
     Besides for illumination, a lamp also can be used for creating atmosphere of an interior space. Projecting lamp has a function of adjusting different light emitting directions, and thus many people like to use the projecting lamp to build atmosphere of home or public. 
     However, adjusting members of the projecting lamps mostly are externally exposed, thereby allowing users to change light emitting directions of the projecting lamps. The externally-exposed adjusting members are likely to be damaged due to long term exposure to the moisture or dust in the ambience. Furthermore, when multiple projecting lamps are used in the same space, if the rotation and light emitting direction of multiple projecting lamps are different from each other, a disordered visual effect in the space will be resulted in. 
     SUMMARY 
     One object of the present invention is to provide a lamp having built-in adjusting members. Therefore, when the light emitting direction of the lamp is changed, the exterior appearance of the lamp can be kept unchanged. 
     According to the aforementioned object, another lamp is provided. The lamp includes a rotary adjustment mechanism, an inclination adjustment mechanism and a light source. The light source is rotatable along a first direction in a first plane by the rotary adjustment mechanism and/or rotatable relative along a second direction in a second plane by the inclination adjustment mechanism, wherein the second plane is different from the first plane. 
     According to an embodiment of the present invention, the lamp further comprises a lamp base, a case body and a spherical shell. The light source is disposed on the spherical shell. The rotary adjustment mechanism connects the lamp base and the case body, thereby enabling the case body to rotate relative to the lamp base along the first direction in the first plane. The inclination adjustment mechanism connects the case body to the spherical shell, thereby enabling the spherical shell to rotate relative to the case body along the second direction in the second plane. 
     According to the aforementioned object, another lamp is provided. The lamp includes a lamp base, a case body, a rotary adjustment mechanism, a spherical shell, an inclination adjustment mechanism and a light source. The case body has a first inner space and an opening. The rotary adjustment mechanism connects the lamp base and the case body, thereby enabling the case body to rotate relative to the lamp base along a first direction in a first plane. The spherical shell is partially disposed in the first inner space and partially extends out of the opening. The inclination adjustment mechanism connects the case body to the spherical shell, thereby enabling the spherical shell to rotate relative to the case body along a second direction in a second plane, wherein the second plane is different from the first plane. The light source is disposed on the spherical shell. 
     According to an embodiment of the present invention, the rotary adjustment mechanism includes at least one first sliding chute and at least one first fixing member. The first sliding chute passes through a bottom portion of the lamp base. The first fixing member is moveably disposed through the first sliding chute and is fixed on the case body. 
     According to an embodiment of the present invention, the case body has a top portion and at least one convex post extending from the top portion, and the first fixing member is fixed on the convex post. 
     According to an embodiment of the present invention, the inclination adjustment mechanism includes at least one second sliding chute, at least one sliding member and at least one second fixing member. The second sliding chute is disposed at the case body. The sliding member slidably is disposed in the second sliding chute. The fixing member is correspondingly disposed through the sliding member and the second sliding chute and is fixed on the spherical shell. 
     According to an embodiment of the present invention, the sliding member is a resilient pad. 
     According to an embodiment of the present invention, the positioning ring is disposed between the lamp base and the case body. 
     According to an embodiment of the present invention, the lamp base includes a bottom portion has a top surface and a bottom surface opposite to each other. The rotary adjustment mechanism includes a connecting member and a retaining ring. The connecting member is fixed on the case body, in which the connecting member includes a bottom base and a convex portion disposed on the bottom base, and the convex portion is disposed through the bottom portion of the lamp base and the bottom base abuts against the bottom surface of the bottom portion. The retaining ring is disposed on the convex portion of the connecting member and abuts against the top surface of the bottom portion. 
     According to an embodiment of the present invention, a sliding chute is disposed on the bottom surface of the bottom portion. The case body has a top portion and a convex post extending from the top portion, in which the convex post is movably disposed in the sliding chute. 
     According to an embodiment of the present invention, a width of the sliding chute of the bottom surface is getting narrower to form a stopper on the bottom surface of the bottom portion. 
     According to an embodiment of the present invention, the rotary adjustment mechanism further includes a positioning ring. A recess is disposed on the bottom surface of the bottom portion, in which the positioning ring is disposed in the recess and abuts against the bottom base of the connecting member. 
     According to an embodiment of the present invention, the spherical shell further includes a second inner space. The inclination adjustment mechanism includes a swing base, a pivot mechanism and a connecting stem. The swing base is disposed in the second inner space and is connected to the spherical shell. The pivot mechanism is connected to the swing base. One end of the connecting stem is pivoted on the swing base, and the other end of the connecting stem penetrates the spherical shell and is fixed on a top portion of the case body. 
     According to an embodiment of the present invention, a groove is disposed on the case body. The inclination adjustment mechanism further includes an adjusting member. The adjusting member is disposed through the groove from outside of the case body and is connected to the spherical shell, so that the spherical shell is swingable relative to the connecting stem. 
     According to an embodiment of the present invention, the spherical shell includes an upper spherical shell, a lower spherical shell and at least one fixing member. The upper spherical shell has at least one connecting post and at least one post opening. The lower spherical shell has at least one supporting post corresponding to the connecting post. The fixing member penetrates through the connecting post from the post opening of the upper spherical shell and is fixed on the supporting post of the lower spherical shell. 
     According to an embodiment of the present invention, the lamp base includes a bottom portion. The bottom portion has a top surface. The case body includes a top plate having a bottom surface. The rotary adjustment mechanism includes a connecting member and a retaining ring. The connecting member is fixed on the case body, in which the connecting member includes a bottom base and a convex portion disposed on the bottom base. The convex portion penetrates through the top plate of the case body and the bottom portion of the lamp base, and the bottom base abuts against the bottom surface of the top plate. The retaining ring is disposed on the convex portion of the connecting member and abuts against the top surface of the lamp base. 
     According to an embodiment of the present invention, the bottom portion of the lamp base further includes a bottom surface, in which a sliding chute is disposed on the bottom surface of the bottom portion. The case body has a convex post extending from the top plate of the case body, in which the convex post is movably disposed in the sliding chute. 
     According to an embodiment of the present invention, a width of the sliding chute of the bottom surface is getting narrower to form a stopper on the bottom surface of the bottom portion. 
     According to an embodiment of the present invention, the rotary adjustment mechanism further includes a positioning ring. A recess is disposed on the bottom surface of the bottom portion, in which the positioning ring is disposed in the recess and is mounted on the convex portion of the connecting member. 
     According to an embodiment of the present invention, the case body further includes a partition plate. An accommodating space is formed between the partition plate and the top plate. The inclination adjustment mechanism includes an adjusting member, a sliding block and a connecting rod. The adjusting member is disposed in the accommodating space. A threaded rod is connected to the adjusting member, in which the adjusting member rotates with the threaded rod. The sliding block is slidably disposed on the threaded rod. Two ends of the connecting rod are respectively pivoted on the sliding block and the spherical shell. 
     According to an embodiment of the present invention, the case body further includes a window, in which the position of the window is corresponding to the position of the adjusting member. 
     According to the above embodiments, the lamp of the present invention includes the rotary adjustment mechanism and the inclination adjustment mechanism, thereby enabling a user to rotate the case body relative to the lamp base or to rotate the spherical shell relative to the case body, thus changing a light emitting direction of the lamp to meet different illumination requirements. In addition, the rotary adjustment mechanism and the inclination adjustment mechanism are hidden internally, so that the exterior appearance of the lamp can be kept unchanged when the light emitting direction of the lamp is changed. Therefore, when multiple lamps with different light emitting directions are applied in the same space, each lamp has the same exterior appearance to make the visual effect in the space look more simple and organized. 
     It is to be understood that both the foregoing general description and the following detailed description are depicted by examples, and are intended to provide further explanations as claimed. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The invention can be more fully understood by reading the following detailed description of the embodiment, with reference made to the accompanying drawings as follows: 
         FIG. 1  is a schematic diagram showing a lamp in accordance with a first embodiment of the present invention; 
         FIG. 2  is a schematic exploded view showing the lamp in accordance with the first embodiment of the present invention; 
         FIG. 3A  is a schematic top view showing a case body at a starting position in accordance with the first embodiment of the present invention; 
         FIG. 3B  is a schematic cross-sectional view taken along a line A-A in  FIG. 3A ; 
         FIG. 4A  and  FIG. 4B  are schematic diagrams showing the case body being rotated 90 degrees along a first direction; 
         FIG. 5A  and  FIG. 5B  are schematic diagrams showing the case body being rotated 180 degrees along the first direction; 
         FIG. 6  is another schematic exploded view showing the lamp in accordance with the first embodiment of the present invention; 
         FIG. 7A  is a schematic top view showing a spherical shell at a starting position in accordance with the first embodiment of the present invention; 
         FIG. 7B  is another schematic cross-sectional view showing the spherical shell at the starting position; 
         FIG. 8A  and  FIG. 8B  are schematic diagrams showing the spherical shell being rotated clockwise 45 degrees along a second direction; 
         FIG. 9A  and  FIG. 9B  are schematic diagrams showing the spherical shell being rotated counterclockwise 45 degrees along the second direction; 
         FIG. 10  is a schematic diagram showing a lamp in accordance with a second embodiment of the present invention; 
         FIG. 11  is a schematic exploded view showing the lamp in accordance with the second embodiment of the present invention; 
         FIG. 12  is a partial cross-sectional view showing the lamp in accordance with the second embodiment of the present invention; 
         FIG. 13A  is a schematic side view showing a case body at a starting position in accordance with the second embodiment of the present invention; 
         FIG. 13B  is a cross-sectional view showing the case body in the starting position in accordance with the second embodiment of the present invention; 
         FIG. 13C  is a schematic cross-sectional view taken along a line B-B in  FIG. 13A ; 
         FIG. 14A  is a schematic diagram showing the case body being rotated 185 degrees along a first direction in accordance with the second embodiment of the present invention; 
         FIG. 14B  is a schematic cross-sectional view taken along a line C-C in  FIG. 14A ; 
         FIG. 14C  is a schematic diagram showing the case body being rotated 350 degrees along the first direction in accordance with the second embodiment of the present invention; 
         FIG. 15A  is a cross-sectional view showing a spherical shell at a starting position in accordance with the second embodiment of the present invention; 
         FIG. 15B  is a schematic diagram showing the spherical shell being rotated 60 degrees along a second direction; 
         FIG. 16  is a schematic diagram showing a lamp in accordance with a third embodiment of the present invention; 
         FIG. 17  is a schematic exploded view showing the lamp in accordance with the third embodiment of the present invention; 
         FIG. 18  is a partial cross-sectional view showing the lamp in accordance with the third embodiment of the present invention; 
         FIG. 19A  is a cross-sectional view showing a spherical shell at a starting position in accordance with the third embodiment of the present invention; and 
         FIG. 19B  is a schematic diagram showing the spherical shell being rotated 40 degrees along a second direction. 
     
    
    
     DETAILED DESCRIPTION 
     Reference will now be made in detail to the present embodiments of the invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers are used in the drawings and the description to refer to the same or like parts. 
     Simultaneously referring to  FIG. 1  and  FIG. 2 ,  FIG. 1  and  FIG. 2  are a schematic diagram and a schematic exploded view showing a lamp  100  in accordance with a first embodiment of the present invention. The lamp  100  mainly includes a rotary adjustment mechanism  130 , an inclination adjustment mechanism  150  and a light source  160 . As shown in  FIG. 1 , the light source  160  is rotatable along a first direction D 1  in a first plane A 1  by the rotary adjustment mechanism  130  and/or rotatable relative along a second direction D 2  in a second plane A 2  by the inclination adjustment mechanism  150 . In the present embodiment, the second plane A 2  is different from the first plane A 1 . As shown in  FIG. 1  and  FIG. 2 , the lamp  100  further includes a lamp base  110 , a case body  120  and a spherical shell  140 . The rotary adjustment mechanism  130  is disposed in an inner space  110   a  of the lamp base  110  and/or an inner space  120   a  of the case body  120 , and the rotary adjustment mechanism  130  can be used to connect the lamp base  110  and the case body  120 , so as to enable the case body  120  to rotate relative to the lamp base  110  along the first direction D 1  in the first plane A 1 . The inclination adjustment mechanism  150  is disposed in the inner space  120   a  of the case body  120  and can be used to connect the case body  120  and the spherical shell  140 , so as to enable the spherical shell  140  to rotate relative to the case body  120  along the second direction D 2  in the second plane A 2 . Moreover, the light source  160  is disposed on the spherical shell  140 , so that light emitting direction of the light source  160  can be changed by adjusting the rotary adjustment mechanism  130  and the inclination adjustment mechanism  150 . As shown in  FIG. 1 , the first plane A 1  and the second plane A 2  are imaginary planes, and the first plane A 1  is different from the second plane A 2 . In one embodiment, the first plane A 1  is perpendicular to the second plane A 2 . 
     Simultaneously referring to  FIG. 1 ,  FIG. 2 ,  FIG. 3A  and  FIG. 3B ,  FIG. 3A  is a schematic top view showing the case body  120  at a starting position in accordance with the first embodiment of the present invention, and  FIG. 3B  is a schematic cross-sectional view taken along a line A-A in  FIG. 3A . In the present embodiment, the rotary adjustment mechanism  130  includes at least one first sliding chute  131  and at least one first fixing member  133 . The first sliding chute  131  penetrates a bottom portion  110   b  of the lamp base  110 . In one embodiment, the first sliding chute  131  is semicircle arc shaped, but not limited thereto. Moreover, the first sliding chute  131  extends along the first direction D 1 . The first fixing member  133  is disposed through the first sliding chute  131  and is fixed on the case body  120 . 
     As shown in  FIG. 2  and  FIG. 3B , in other embodiments, the case body  120  has a top portion  120   b , at least one convex post  120   c  and an opening  120   d . The convex post  120   c  extends from the top portion  120   b . The number and the position of the convex post  120   c  are corresponding to those of the first fixing member  133 . The first fixing member  133  is disposed through the first sliding chute  131  and is fixed on the convex post  120   c  of the case body  120 . Therefore, when the case body  120  is rotated relative to the lamp base  110  along the first direction D 1 , the first fixing member  133  slides in the first sliding chute  131 . In one embodiment, a positioning ring  170  can be disposed between the case body  120  and the lamp base  110 . The positioning ring  170  is used to increase the friction between the case body  120  and the lamp base  110 , so as to ensure that the case body  120  can be positioned at a precise position. In one example, the positioning ring  170  can be an O-ring. 
     Simultaneously referring to  FIG. 3A - FIG. 4B , in which  FIG. 4A  and  FIG. 4B  are schematic diagrams showing the case body  120  being rotated 90 degrees along the first direction D 1 . As shown in  FIG. 3A  and  FIG. 3B , the case body  120  is at a starting position, and the first fixing member  133  is at one end of the first sliding chute  131 . As shown in  FIG. 4A  and  FIG. 4B , when the case body  120  is rotated 90 degrees relative to the lamp base  110  along the first direction D 1 , the light emitting direction of the light source  160  rotates 90 degrees along with the case body  120 , and the first fixing member  133  moves to a middle position of the first sliding chute  131  accordingly. 
     Referring to  FIG. 5A  and  FIG. 5B ,  FIG. 5A  and  FIG. 5B  are schematic diagrams showing the case body  120  being rotated 180 degrees along the first direction D 1 . When the case body  120  is rotated 180 degrees relative to the lamp base  110  along the first direction D 1 , the light emitting direction of the light source  160  rotates 180 degrees along with the case body  120 , and the first fixing member  133  moves to the other end of the first sliding chute  131  accordingly. Therefore, the light emitting direction of the light source  160  can be changed by rotating the case body  120 . It is noted that, the rotation angle of the case body  120  is related to the extending arc-length of the first sliding chute  131 . Therefore, in other embodiments, the extending arc-length of the first sliding chute  131  can be designed according to rotation angles required by the case body  120 , so as to meet practical requirements. 
     Simultaneously referring to  FIG. 2 ,  FIG. 6 ,  FIG. 7A  and  FIG. 7B , in which  FIG. 6  is another schematic exploded view showing the lamp  100  in accordance with the first embodiment of the present invention, and  FIG. 7A  and  FIG. 7B  are a schematic top view and a schematic cross-sectional view showing the spherical shell  140  at a starting position in accordance with the first embodiment of the present invention. It is noted that, in order to clearly illustrate the structures of the case body  120  and the spherical shell  140 , the lamp base  110  is not illustrated in  FIG. 7A . In the present embodiment, the inclination adjustment mechanism  150  includes at least one at least one second sliding chute  151 , at least one sliding member  153  and at least one second fixing member  155 . The second sliding chute  151  is disposed at the top portion  120   b  of the case body  120 . In one embodiment, the top portion  120   b  of the case body  120  is corresponding to the arc shape of the spherical shell  140 . In addition, the second sliding chute  151  extends along the second direction D 2 , and the shape of the second sliding chute  151  is corresponding to that of the top portion  120   b . The sliding member  153  is slidably disposed in the second sliding chute  151 . The second fixing member  155  is correspondingly disposed through the sliding member  153  and the second sliding chute  151  and is fixed to the spherical shell  140 . Therefore, when the spherical shell  140  is rotated relative to the case body  120  along the second direction D 2 , the sliding member  153  slides in the second sliding chute  151  accordingly. 
     In one embodiment, the sliding member  153  has elasticity itself, and the friction between the sliding member  153  and the second sliding chute  151  enables that the spherical shell  140  can be positioned at a precise position after being rotated. In one example, the sliding member  153  is a resilient pad. 
     Simultaneously referring to  FIG. 7A  to  FIG. 8B , in which  FIG. 8A  and  FIG. 8B  are schematic diagrams showing the spherical shell  140  being rotated clockwise 45 degrees along the second direction D 2 . It is noted that, in order to clearly illustrate the rotation of spherical shell  140 , the lamp base  110  is not illustrated in  FIG. 8A  and  FIG. 8B . As shown in  FIG. 7A  and  FIG. 7B , the spherical shell  140  is at a starting position, and the sliding member  153  and the second fixing member  155  are at a middle position of the second sliding chute  151 . As shown in  FIG. 8A  and  FIG. 8B , when the spherical shell  140  is rotated clockwise 45 degrees relative to the case body  120  along the second direction D 2  from the starting position, the light emitting direction of the light source  160  rotates clockwise 45 degrees along with the spherical shell  140 , and the sliding member  153  and the second fixing member  155  moves to one end of the second sliding chute  151  accordingly. 
     Referring to  FIG. 9A  and  FIG. 9B ,  FIG. 9A  and  FIG. 9B  are schematic diagrams showing the spherical shell  140  being rotated counterclockwise 45 degrees along the second direction D 2 . It is noted that, in order to clearly illustrate the rotation of the spherical shell  140 , the lamp base  110  is not illustrated in  FIG. 9A  and  FIG. 9B . When the sliding member  153  is rotated counterclockwise 45 degrees relative to the case body  120  along the second direction D 2  from the starting position, the light emitting direction of the light source  160  rotates counterclockwise 45 degrees along with the spherical shell  140 , and the sliding member  153  moves to the other end of the second sliding chute  151  accordingly. Therefore, the light emitting direction of the light source  160  can be changed by rotating the spherical shell  140 . It is noted that, the rotation angle of the spherical shell  140  is related to the extending arc-length of the second sliding chute  151 . Therefore, in other embodiments, the extending arc-length of the second sliding chute  151  can be designed according to rotation angles required by spherical shell  140 , so as to meet practical requirements. 
     In the present embodiment, the rotary adjustment mechanism  130  and the inclination adjustment mechanism  150  are disposed inside the lamp  100 . Moreover, the spherical shell  140  is partially disposed in the inner space  120   a  of the case body  120  and partially extends out of the opening  120   d . In addition, the light source  160  is disposed on the spherical shell  140  and is located outside the opening  120   d . When the spherical shell  140  or the case body  120  is rotated, the light emitting direction of the light source  160  changes accordingly but the exterior appearance of the lamp  100  is unchanged. Therefore, when multiple lamps  100  with different light emitting directions are applied in the same space, each lamp  100  has the same exterior appearance, to make the visual effect in the space more organized. 
     In the present invention, the lamp  100  may have different designs. Referring to  FIG. 10  to  FIG. 12 ,  FIG. 10  to  FIG. 12  are a schematic diagram, a schematic exploded view showing and a partial cross-sectional view showing a lamp  300  in accordance with a second embodiment of the present invention. The lamp  300  mainly includes a rotary adjustment mechanism  330 , an inclination adjustment mechanism  350  and a light source  360 . As shown in  FIG. 10 , the light source  360  is rotatable along a first direction D 3  in a first plane A 3  by the rotary adjustment mechanism  330  and/or rotatable relative along a second direction D 4  in a second plane A 4  by the inclination adjustment mechanism  350 . In the present embodiment, the second plane A 4  is different from the first plane A 3 . As shown in  FIG. 10  to  FIG. 12 , the lamp  300  further includes a lamp base  310 , a case body  320  and a spherical shell  340 . The rotary adjustment mechanism  330  is mainly disposed in an inner space  310   a  of the lamp base  310  and/or an inner space  320   a  of the case body  320  and can be used to connect the lamp base  310  and the case body  320 , so as to enable the case body  320  to rotate relative to the lamp base  310  along the first direction D 3  in the first plane A 3 . The inclination adjustment mechanism  350  is disposed in the inner space  320   a  of the case body  320  and can be used to connect the case body  320  and the spherical shell  340 , so as to enable the spherical shell  340  to rotate relative to the case body  320  along the second direction D 4  in the second plane A 4 . Moreover, the light source  360  is disposed on the spherical shell  340 , so that light emitting direction of the light source  360  can be changed by adjusting the rotary adjustment mechanism  330  and the inclination adjustment mechanism  350 . As shown in  FIG. 10 , the first plane A 3  and the second plane A 4  are imaginary planes, and the first plane A 1  is different from the second plane A 4 . In one embodiment, the first plane A 3  is perpendicular to the second plane A 4 . 
     Referring to  FIG. 10  to  FIG. 12  again, in the present embodiment, the lamp base  310  includes a bottom portion  311 , and the bottom portion  311  has a top surface  311   a  and a bottom surface  311   b  opposite to each other. The rotary adjustment mechanism  330  includes a connecting member  331 , a retaining ring  333  and a positioning ring  335 . The connecting member  331  is fixed on the case body  320 . As shown in  FIG. 11  and  FIG. 12 , the connecting member  331  includes a bottom base  331   a  and a convex portion  331   b . The convex portion  331   b  protrudes from the bottom base  331   a . Moreover, the convex portion  331   b  of the connecting member  331  penetrates through the bottom portion  311  of the lamp base  310  and extends to the inner space  310   a  of the lamp base  310 . Meanwhile, the bottom base  331   a  of the connecting member  331  abuts against the bottom surface  311   b  of the bottom portion  311  of the lamp base  310 . The retaining ring  333  is mounted on the convex portion  331   b  of the connecting member  331  in the inner space  310   a  of the lamp base  310  and abuts against the top surface  311   a  of the bottom portion  311  of the lamp base  310 , so as to clamp and fix the connecting member  331 . In one example, the retaining ring  333  is a C-shaped circlip or C-ring. 
     Simultaneously referring to  FIG. 11  to  FIG. 13C , in which  FIG. 13A  and  FIG. 13B  are a schematic side view and a cross-sectional view showing the case body  320  at a starting position in accordance with the second embodiment of the present invention, and  FIG. 13C  is a schematic cross-sectional view taken along a line B-B in  FIG. 13A . A sliding chute  311   c , a stopper  311   d  and a recess  311   e  are disposed on the bottom surface  311   b  of the bottom portion  311  of the lamp base  310 . In addition, the case body  320  includes a top portion  321 , a convex post  322  and an opening  320   b . The convex post  322  extends from the top portion  321 . Therefore, when the case body  320  is rotated relative to the lamp base  310  along the first direction D 3 , the convex post  322  of the case body  320  can slide in the sliding chute  311   c . In some embodiments, as shown in  FIG. 13C , the sliding chute  311   c  is an annular chute, and a portion of width of the annular chute is getting narrower to form the stopper  311   d . In the present embodiment, the width of the annular chute is approximately larger than that of the convex post  322 , so that the convex post  322  can move in the annular chute. In addition, the width of the stopper  311   d  is approximately smaller than that of the convex post  322 . Therefore, when the convex post  322  is moved to a position near the stopper  311   d , the stopper  311   d  will block the convex post  322 . As a result, the stopper  311   d  can limit the rotation angle of the case body  320 , so as to prevent the wires in the lamp  300  from being entangled together due to the over-rotation of the case body  320 . 
     Referring to  FIG. 11  to  FIG. 13C , in the present embodiment, the positioning ring  335  is disposed in the recess  311   e  and abuts against the bottom base  331   a  of the connecting member  331 . The positioning ring  335  is used to increase the friction between the connecting member  331  and the lamp base  310 , so as to ensure that the case body  320  can be positioned at a precise position. In one example, the positioning ring  335  can be an O-ring. 
     As shown in  FIG. 13A  and  FIG. 13B , the case body  320  is at the starting position, and the convex post  322  is at one end of the sliding chute  311   c . Simultaneously referring to  FIG. 10  and  FIG. 14A  to  FIG. 14C , in which  FIG. 14A  is a schematic diagram showing the case body  320  being rotated 185 degrees along the first direction D 3  in accordance with the second embodiment of the present invention,  FIG. 14B  is a schematic cross-sectional view taken along a line C-C in  FIG. 14A , and  FIG. 14C  is a schematic diagram showing the case body  320  being rotated 350 degrees along the first direction D 3  in accordance with the second embodiment of the present invention. When the case body is rotated 185 degrees relative to the lamp base  310  along the first direction D 3  from the starting position, the light emitting direction of the light source  360  rotates 185 degrees along with the case body  320  (as shown in  FIG. 14A ), and the convex post  322  moves to a middle position of the sliding chute  311   c  (as shown in  FIG. 14B ) accordingly. In some embodiments, the maximum rotation angle of the case body  320  is 350 degrees. In other words, when the case body  320  is rotated from one end of the sliding chute  311   c  until the convex post  322  moves to the other end (as shown in  FIG. 14C ), the light emitting direction of the light source  360  rotates 350 degrees along with the case body  320  accordingly. It is noted that, the rotation angle of the case body  320  is related to the extending arc-length of the sliding chute  311   c  or the location of the stopper  311   d . Therefore, in other embodiments, the extending arc-length of the first sliding chute  311   c  or the location of the stopper  311   d  can be designed according to required rotation angles of the case body  320 , so as to meet practical requirements. 
     Referring to  FIG. 10  to  FIG. 12  again, the spherical shell  340  includes an upper spherical shell  341  and a lower spherical shell  342 , in which an inner space  340   a  of the spherical shell  340  is formed between the upper spherical shell  341  and the lower spherical shell  342 . As shown in  FIG. 11 , the upper spherical shell  341  has at least one post opening  341   a  and at least one connecting post  341   b . The lower spherical shell  342  has at least one supporting post  342   a  corresponding to the connecting post  341   b . Therefore, the upper spherical shell  341  and the lower spherical shell  342  are combined together by penetrating a fixing member  341   c  (e.g. a screw) through the connecting post  341   b  from the post opening  341   a  of the upper spherical shell  341  to fix the supporting post  342   a . The inclination adjustment mechanism  350  includes a swing base  351 , a connecting stem  353 , an adjusting member  355  and a pivot mechanism  357 . The swing base  351  is disposed in the inner space  340   a  of the spherical shell  340  and is connected to the spherical shell  340 . One end of the connecting stem  353  is pivoted on the swing base  351  by the pivot mechanism  357 , and the other end of the connecting stem  353  penetrates the spherical shell  340  and is fixed on a top portion  321  of the case body  320 . As shown in  FIG. 11  and  FIG. 12 , the pivot mechanism  357  includes a pivot shaft  357   a , a resilient pad  357   b  and a fixing member  357   c . One end of the pivot shaft  357   a  is fixed on the swing base  351 , and the other end of the pivot shaft  357   a  penetrates the connecting stem  353 . Therefore, the spherical shell  340  can swing around the pivot between the connecting stem  353  and the swing base  351 . Moreover, the fixing member  357   c  and the resilient pad  357   b  are disposed on the pivot shaft  357   a , and the fixing member  357   c  abuts the resilient pad  357   b  on the connecting stem  353 . Therefore, the swing base  351  can be positioned at a required position by the friction between the resilient pad  357   b  and the connecting stem  353 , so as to prevent the spherical shell  340  from randomly swaying. In addition, a groove  323  is disposed on the case body  320 , and the adjusting member  355  is disposed through the groove  323  from outside of the case body  320  and is connected to the spherical shell  340 . The spherical shell  340  can swing relative to the connecting stem  353  by manipulating the adjusting member  355 . In one example, the adjusting member  355  is a driving lever. Therefore, when the adjusting member  355  is moved in the groove  323 , the spherical shell  340  swings along the second direction D 4  accordingly. 
     Simultaneously referring to  FIG. 10 ,  FIG. 12 ,  FIG. 15A  and  FIG. 15B , in which  FIG. 15A  is a cross-sectional view showing the spherical shell  340  at a starting position in accordance with the second embodiment of the present invention, and  FIG. 15B  is a schematic diagram showing the spherical shell  340  being rotated 60 degrees along the second direction D 4 . As shown in  FIG. 10 ,  FIG. 12  and  FIG. 15A , the spherical shell  340  is at the starting position, and the adjusting member  355  is disposed at a top end of the groove  323 . When the adjusting member  355  is moved in the groove  323 , the spherical shell  340  rotates along the second direction D 4  accordingly. At the same time, the light emitting direction of the light source  360  can be changed together with the rotation of the spherical shell  340 . As shown in  FIG. 15B , when the adjusting member  355  is moved to a bottom end of the groove  323 , the light emitting direction of the light source  360  rotated 60 degrees along with the rotation of the spherical shell  340  accordingly. It is noted that, the rotation angle of the spherical shell  340  is related to the extending arc-length of the groove  323 . Therefore, in other embodiments, the extending arc-length of the groove  323  can be designed according to required rotation angles of the spherical shell  340 , so as to meet practical requirements. 
     In the present embodiment, the rotary adjustment mechanism  330  and the inclination adjustment mechanism  350  are disposed inside the lamp  300 . Moreover, the spherical shell  340  is partially disposed in the inner space  320   a  of the case body  320  and partially extends out of the opening  320   b . In addition, the light source  360  is disposed on the spherical shell  340  and is located outside the opening  320   b . When the spherical shell  340  or the case body  320  is rotated, the light emitting direction of the light source  360  changes accordingly but the exterior appearance of the lamp  300  is unchanged. Therefore, when multiple lamps  300  with different light emitting directions are applied in the same space, each lamp  300  has the same exterior appearance, to make the visual effect in the space more organized. 
     In the present invention, the lamp  300  may have different designs. Referring to  FIG. 16  to  FIG. 18 ,  FIG. 16  to  FIG. 18  are a schematic diagram, a schematic exploded view and a partial cross-sectional view showing a lamp  500  in accordance with a third embodiment of the present invention. The lamp  500  mainly includes a rotary adjustment mechanism  530 , an inclination adjustment mechanism  550  and a light source  560 . As shown in  FIG. 1 , the light source  560  is rotatable along a first direction D 5  in a first plane A 5  by the rotary adjustment mechanism  530  and/or rotatable relative along a second direction D 6  in a second plane A 6  by the inclination adjustment mechanism  550 . In the present embodiment, the second plane A 6  is different from the first plane A 5 . As shown in  FIG. 16  to  FIG. 18 , the lamp  500  further includes a lamp base  510 , a case body  520  and a spherical shell  540 . The rotary adjustment mechanism  530  is disposed in an inner space  510   a  of the lamp base  510  and/or an inner space  520   a  of the case body  520  and can be used to connect the lamp base  510  and the case body  520 , so as to enable the case body  520  to rotate relative to the lamp base  510  along a first direction D 5  in a first plane A 5 . The inclination adjustment mechanism  550  is disposed in the inner space  520   a  of the case body  520  and can be used to connect the case body  520  and the spherical shell  540 , so as to enable the spherical shell  540  to rotate relative to the case body  520  along a second direction D 6  in a second plane A 6 . Moreover, the light source  560  is disposed on the spherical shell  540 , so that light emitting direction of the light source  560  can be changed by adjusting the rotary adjustment mechanism  530  and the inclination adjustment mechanism  550 . As shown in  FIG. 16 , the first plane A 5  and the second plane A 6  are imaginary planes, and the first plane A 5  is different from the second plane A 6 . In one embodiment, the first plane A 5  is perpendicular to the second plane A 6 . 
     Referring to  FIG. 16  to  FIG. 19A , in which  FIG. 19A  is a cross-sectional view showing the spherical shell  540  at a starting position in accordance with the third embodiment of the present invention. In the present embodiment, the lamp base  510  includes a bottom portion  511 , and the bottom portion  511  has a top surface  511   a  and a bottom surface  511   b  opposite to each other. In addition, the case body  520  includes a top plate  521 , a convex post  522 , a partition plate  523  and an opening  524 . The convex post  522  extends from the top plate  521 . An accommodating space  523   a  is formed between the top plate  521  and the partition plate  523 . 
     As shown in  FIG. 17  and  FIG. 19A , the rotary adjustment mechanism  530  includes a connecting member  531 , a retaining ring  533  and a positioning ring  535 . The connecting member  531  is fixed on the case body  520 . The connecting member  531  includes a bottom base  531   a  and a convex portion  531   b . The convex portion  531   b  protrudes from the bottom base  531   a . Moreover, the convex portion  531   b  of the connecting member  531  penetrates through the top plate  521  of the case body  520  and the bottom portion  511  of the lamp base  510 , and extends to the inner space  510   a  of the lamp base  510 . Meanwhile, the bottom base  531   a  of the connecting member  531  abuts against the bottom surface  521   a  of the top plate  521 . The retaining ring  533  is mounted on the convex portion  531   b  of the connecting member  531  in the inner space  510   a  of the lamp base  510  and abuts against the top surface  511   a  of the bottom portion  511  of the lamp base  510 , so as to clamp and fix the connecting member  531 . In one example, the retaining ring  533  is a C-shaped circlip or C-ring. 
     Referring to  FIG. 16  to  FIG. 19A , the structure of the lamp base  510  is similar to that of the lamp base  310  shown in  FIG. 10 . A sliding chute  511   c , a stopper (such as  311   d  in  FIG. 13C ) and a recess  511   d  are disposed on the bottom surface  511   b  of the bottom portion  511  of the lamp base  510 . Therefore, when the case body  520  is rotated relative to the lamp base  510  along the first direction D 5 , the convex post  522  of the case body  520  can slide in the sliding chute  511   c . In some embodiments, the positioning ring  535  is disposed in the recess  511   d  and is mounted on the convex portion  531   b  of the connecting member  531 . The positioning ring  535  is used to increase the friction between the connecting member  531  and the lamp base  510 , so as to ensure that the case body  520  can be positioned at a precise position. In one example, the positioning ring  535  can be an O-ring. It is noted that, the rotation angle of the case body  520  is related to the extending arc-length of the sliding chute  511   c  or the location of the stopper. Therefore, in other embodiments, the extending arc-length of the first sliding chute  511   c  or the location of the stopper can be designed according to required rotation angles of the case body  520 , so as to meet practical requirements. 
     Simultaneously referring to  FIG. 17  to  FIG. 19B ,  FIG. 19B  is a schematic diagram showing the spherical shell  540  being rotated 40 degrees along the second direction D 6 . The inclination adjustment mechanism  550  mainly includes an adjusting member  551 , a threaded rod  552 , a sliding block  553  and a connecting rod  554 . The adjusting member  551  is rotatably disposed in the accommodating space  523   a  formed between the top plate  521  and the partition plate  523 . Moreover, one end of the threaded rod  552  is connected to the adjusting member  551 , and the other end of the threaded rod  552  is located in the accommodating space  523   a  of the case body  520 . Therefore, when the adjusting member  551  is rotated, the threaded rod  552  rotates accordingly. The sliding block  553  is slidably disposed on the threaded rod  552 , so that when the threaded rod  552  is rotated, the sliding block  553  can move along the threaded rod  552 . In addition, one end of the connecting rod  554  is pivoted on the sliding block  553 , and the other end of the connecting rod  554  is pivoted on the spherical shell  540 . Therefore, when the sliding block  553  is moved, the connecting rod  554  moves the spherical shell  540  to swing along the second direction D 6 . 
     As shown in  FIG. 19A , the spherical shell  540  is at the starting position, when the threaded rod  552  is rotated by the adjusting member  551 , the sliding block  553  moves upwards along the threaded rod  552  accordingly. While the sliding block  553  is moving upwards, the connecting rod  554  moves the spherical shell  540  to swing along the second direction D 6 , so as to change the light emitting direction of the light source  560 . In other embodiments, as shown in  FIG. 17 , the case body  520  further includes a window  520   b . The position of the window  520   b  is corresponding to the position of the adjusting member  551 , so that users can directly operate the adjusting member  551  from the outside of the case body  520  to change the light emitting direction of the light source  560 . It is noted that, the rotation angle of the spherical shell  540  is related to the length or disposition position of the connecting rod  554  or the threaded rod  552  and the structure design of the spherical shell  540 . Therefore, in other embodiments, the length or disposition position of the connecting rod  554  or the threaded rod  552  can be designed according to required rotation angles of the spherical shell  540 , so as to meet practical requirements. 
     In the present embodiment, the rotary adjustment mechanism  530  and the inclination adjustment mechanism  550  are disposed inside the lamp  500 . Moreover, the spherical shell  540  is partially disposed in the inner space  520   a  of the case body  520  and partially extends out of the opening  524 . In addition, the light source  560  is disposed on the spherical shell  540  and is located outside the opening  524 . When the spherical shell  540  or the case body  520  is rotated, the light emitting direction of the light source  560  changes accordingly but the exterior appearance of the lamp  500  is unchanged. Therefore, when multiple lamps  500  with different light emitting directions are applied in the same space, each lamp  500  has the same exterior appearance to make the visual effect in the space more organized. 
     According to the aforementioned embodiments of the present invention, the lamp of the present invention includes the rotary adjustment mechanism and the inclination adjustment mechanism, thereby enabling a user to rotate the case body relative to the lamp base or to rotate the spherical shell relative to the case body, thus changing a light emitting direction of the lamp to meet different illumination requirements. In addition, the rotary adjustment mechanism and the inclination adjustment mechanism are hidden internally, so that the exterior appearance of the lamp can be kept unchanged when the light emitting direction of the lamp is changed. Therefore, when multiple lamps with different light emitting directions are applied in the same space, each lamp has the same exterior appearance to make the visual effect in the space look more simple and organized. 
     Although the present invention has been described in considerable detail with reference to certain embodiments thereof, other embodiments are possible. Therefore, the spirit and scope of the appended claims should not be limited to the description of the embodiments contained herein. 
     It will be apparent to those skilled in the art that various modifications and variations can be made to the structure of the present invention without departing from the scope or spirit of the invention. In view of the foregoing, it is intended that the present invention cover modifications and variations of this invention provided they fall within the scope of the following claims.