Abstract:
A projection gear knob is assembled on an end portion of a car gear lever. A projection lamp, a projection film are accommodated and a transparent push-button is assembled in the gear knob, such that interesting, ornate, or beautiful projection film pattern is irradiated on inner top of the car. The projection lamp is freely switched by an outer light-transmissive push-button, so as to increase interest and beauty in the decoration of the car.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    1. Field of Invention 
         [0002]    The present invention relates to a projection gear knob combined with a car gear lever, capable of providing ornate, interesting, or beautiful projection pattern on inner top, thereby achieving more lively and active decoration of the car. 
         [0003]    2. Related Art 
         [0004]    Referring to  FIG. 1 , a conventional light emitting gear knob  10  recently available in the market mainly includes an accommodating body  101 , a light emitting body  102 , and an upper cover  103 . A through hole  1011  is formed on a proper position at a bottom of the accommodating body  101 , and a female thread  1012  is formed on upper section of an inner side of the accommodating body  101 . A male thread  1031  capable of relatively being screwed with the female thread  1012  formed on the accommodating body  101  is formed at a bottom of the upper cover  103 , two symmetrical tapped holes  1033  are formed at a bottom of the male thread  1013 , and a light emitting patterned panel  1032  is assembled on a top of the upper cover  103 . For the light emitting body  102 , round slots  1022  corresponding to the tapped holes  1033  formed on the upper cover  103  are also disposed on two symmetrical sides of a circuit board  1021 , a line  1023  is disposed on the circuit board  1021 , and the line  1023  is connected to a plug  104  after passing through the through hole  1011  of the accommodating body  101 . The circuit board  1021  is fixed by locking screws  105  in the tapped holes  1033  at the bottom of the upper cover  103 , and then screwing the male thread  1031  of the upper cover  103  and the female thread  1012  of the accommodating body  101  with each other. However, when it intends to install the light emitting gear knob  10  on the car, it is necessary to insert the plug  104  connected to the line  1023  in a car motor room, and the installation is quite time consuming and laboursome. It is quite difficult for non-professionals to perform perfect installation, so improvement is required. 
       SUMMARY OF THE INVENTION 
       [0005]    In view of the above requirement, through hard research and personal experience of years in the field, the inventor designs a brand-new invention. The present invention is mainly directed to provide a projection gear knob capable of being installed easily and projecting a pattern. 
         [0006]    In order to achieve the above objective, the projection gear knob of the present invention includes an outer case, a push-button, a projection lamp, and a switch. The push-button is transparent, the projection lamp and the push-button are assembled in the outer case, and a cell is assembled in the outer case for supplying electric power to the projection lamp. Then, the switch is assembled under the push-button. After the push-button is pressed, the switch electrically connected to the cell and the projection lamp is triggered, such that the projection lamp generates a light source. A projection film is assembled on an irradiating end of the projection lamp, and a pattern on the projection film is projected onto the inner top of the car through the irradiation of the light source. 
         [0007]    In order to make the examiner have a further understanding of the content of the present invention, the description is given with the accompanying drawings in the following. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0008]    The present invention will become more fully understood from the detailed description given herein below for illustration only, and thus are not limitative of the present invention, and wherein: 
           [0009]      FIG. 1  is a conventional light emitting gear knob; 
           [0010]      FIG. 2  is a schematic view of the installation of the present invention; 
           [0011]      FIG. 3  is a three-dimensional exploded view of the present invention; and 
           [0012]      FIG. 4  is an assembly cross-sectional view of the present invention. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0013]    Referring to  FIG. 2 , a schematic view of the installation of the present invention is shown. A projection gear knob  20  as shown in the drawing is assembled on a car gear lever  30 . When pressing a transparent push-button  202  on the projection gear knob  20 , a projection lamp  203  (not shown) in the projection gear knob  20  projects lamp light upwardly, and the lamp light irradiates a projection film  2031  (not shown) having a pattern through an irradiating end assembled on the projection lamp  203 , such that the pattern  31  on the projection film  2031  is projected to an inner top  32  of the car. The electric power of the projection lamp  203  is provided by an internally assembled cell  2063  (not shown), so as to eliminate the trouble of connecting the line to the car motor room or a car cigarette lighter for charging. 
         [0014]    Referring to  FIG. 3 , a three-dimensional exploded view of the present invention is shown. The projection gear knob  20  as shown in the drawing includes an outer case  201 , a push-button  202 , a projection lamp  203 , and a switch  204 . The outer case  201  is composed of an upper cover  205 , an inner base  206 , a middle cover  207 , a lower cover  208 , and a bushing  209 . The push-button  202  is transparent, a plurality of legs  2021  is formed on a lower end of the push-button  202 , and a plurality of springs  2022  is sleeved on the legs  2021 . A light emitting source (e.g. LED and bulb etc.) is assembled in the projection lamp  203 , and a projection film  2031  is assembled on an illuminating end of the projection lamp  203 . The switch  204  is assembled under the push-button  202 . The upper cover  205  is sleeved on the push-button  202 , and a plurality of first tapped holes  2051  is formed on a bottom of the upper cover  205 . A plurality of first relative tapped holes  2061  corresponding to the first tapped holes  2051  on the bottom of the upper cover  20  is formed on an outer edge of an opening end of the inner base  206 , and a cell container  2062  is formed on the bottom, for assembling more than one cell  2063  supplying the electric power to the projection lamp  203 . The lower cover  208  is assembled on a lower end of the middle cover  207 , and two symmetric second tapped holes  2081  are formed on the outer bottom of the lower cover  208 . After a bushing  209  is assembled on the bottom of the lower cover  208 , two inner hex head screws  2082  pass through the second tapped holes  2081 , so as to fix the bushing  209  assembled on the bottom of the lower cover  208  by screwing. 
         [0015]    Referring to  FIG. 4 , an assembly cross-sectional view of the present invention is shown. In the projection gear knob  20  as shown in the drawing, the push-button  202  is transparent, and the upper cover  205  is sleeved on the push-button  202 . Two legs  2021  extend from the bottom of the push-button  201 , the springs  2022  are respectively sleeved on the legs  2021 . After the springs  2022  is sleeved on the leg  2021 , a part of the spring  2022  may be exposed out of the leg  2021 . After the projection lamp  203  is placed in the inner base  206 , the push-button  201  is placed in the inner base  206  and is located above the projection lamp  203 , and more than one cell  2063  can be assembled on the cell container  2062  of the inner base  206 , for supplying the electric power to the projection lamp  203 . Then, a plurality of screws  2023  pass through the plurality of first relative tapped holes  2061  on the inner base  206 , so as to be screwed with the corresponding first tapped holes  2051  on the bottom of the upper cover  205 , such that the upper cover  205 , the push-button  202 , the projection lamp  203 , and the inner base  206  are integrated as a whole. The lower cover  208  is assembled on the bottom of the inner base  206 , two symmetric second tapped holes  2081  are formed on the lower side of the lower cover  208 , and the two inner hex head screws  2082  pass through the second tapped holes  2081 , so as to fix the bushing  209  assembled on the bottom of the lower cover  208 . The push-button  202  is transparent, and the projection lamp  203  is located right under the push-button  202 , so when the push-button  202  is pressed, after the spring  2022  partly exposed out of the leg  2021  contacts with the bottom of the inner base  206 , an elastic force for springing back the push-button  202  is provided, and the lower end of the push-button  202  triggers the switch  204  electrically connected to the cell  2063  and the projection lamp  203 , for providing the electric power of the cell  2063  to make the projection lamp  203  emit light. The projection film  2031  is assembled on a projecting end of the projection lamp  203 , so when the light ray irradiates the projection film  2031  upwardly under the projection film  2031 , the pattern on the projection film  2031  may be projected to the inner top of the car. Further, the bushing  209  is assembled on the gear lever, such that the projection gear knob  20  can be directly sleeved on the gear level, or be fixed on the gear lever by screwing. After the middle cover  207  is assembled with the lower cover  208 , the lower cover  208  can be separated from the middle cover  207 , such that the cell container  2062  is exposed, for conveniently replacing the cell  2063 . 
         [0016]    As described above, after the present invention is implemented accordingly, through the internally assembled cell and the projection film assembled on the irradiating end of the projection lamp, a projection gear knob, capable of being installed easily and projecting the pattern on the inner top of the car, can be surely achieved. 
         [0017]    The invention is thus described, and it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the invention, and all such modifications as would be obvious to one skilled in the art are intended to be included within the scope of the following claims. 
         [0018]    To sum up, the function of the projection gear knob of the present invention has industrial applicability, novelty, inventiveness, and other requirements of patentability of the utility model. The applicant applies to the Intellectual Property Office for the utility model according to the patent law.