Patent Publication Number: US-2005116477-A1

Title: Automatic power generation light-image fan device

Description:
BACKGROUND OF THE INVENTION  
      1. Field of the Invention  
      The present invention is related to an automatic power generation light-image fan device, and more particularly to a fan device that can control light-emitting elements of the vanes to produce various twinkling light-images, also having an effect of persistence of vision and different light-mixing colors.  
      2. Description of Related Art  
      Generally, a common fan does not have a light-emitting decoration or a warning function, and a fan with a light-emitting function is always a heat-dispersing fan, such as, for example, TW patent No. 520149. In this disclosure, several plugging holes are formed in a circular portion of a fan base in an isogonal manner, and light-emitting diodes are correspondingly located in these plugging holes, respectively. Furthermore, these light-emitting diodes are connected to one another in series through printed conducting lines, and the printed conducting lines are also connected in series with the conducting lines of a vane set, so that when the components of the vanes are electrically conducted, the vanes rotate to provide air convection, and simultaneously, because the rotation of the vanes conducts the light-emitting diodes to illuminate and also refracts the light emitted therefrom, the heating-dispersing fan radiates light and has a novel luminous effect.  
      However, the above-mentioned light-emitting and luminous effects still cannot provide a light-image or color-mixing effects for generating better visual effects. Moreover, the heating-dispersing fan does not have a function of automatic power generation.  
     SUMMARY OF THE INVENTION  
      The object of the present invention is to provide a mechanism for making a common fan have an automatic power generation function, and simultaneously, through specific circuit designs, to control the light-emitting elements mounted thereon for producing various twinkling light-image variations so that an effect of persistence of vision and different mixing-colors can be achieved.  
      For achieving the object described above, the applicant proposes an automatic power generation light-image fan device with a novel structure and circuit design, including the following elements. A fan motor has a base and a mandrel mounted on said base. A vane is set having a housing base, an axle hole in said housing base for passing therethrough said mandrel of said fan motor, an accommodating room mounted on an inner surface of said housing base passed through by said mandrel, and plural vanes circularly mounted around said housing base. An automatic power generation component has one or more permanent magnets and is mounted on an inner surface of said fan motor, with an inductance coil circularly mounted inside said accommodating room of said vane set at a position corresponding to said permanent magnet. A rectifier filter circuit is connected to ends of the inductance coil of said automatic power generation component for rectifying and filtering an AC voltage generated by said automatic power generation component so as to obtain a DC voltage. A circuit board is mounted on said vanes of said vane set and has more than one light-emitting element. A programmable chip is mounted on said circuit board and is respectively connected with said rectifier filter circuit and said light-emitting elements, and has a power terminal, a trigger terminal and plural I/O terminals. The power terminal is connected to an output terminal of the rectifier filter circuit and each I/O terminal is respectively connected to a light-emitting element. When the programmable chip outputs a DC voltage at the rectifier filter circuit, each light-emitting element is accordingly triggered to depend on a control of different timings of a waveform output by said programmable chip and also on different twinkling timings and orders for generating various twinkling light-image variations, as well as an effect of persistence of vision. Between said light-emitting elements, an effect of light-mixing for generating different color variations is also formed.  
      The above-mentioned programmable chip is a single chip having an oscillator, a frequency selector, a ROM, a counter, a pattern memory and a buffer integrated thereon. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
      The foregoing aspects and many of the attendant advantages of this invention will be more readily appreciated as the same becomes better understood by reference to the following detailed description, when taken in conjunction with the accompanying drawings, wherein:  
       FIG. 1  shows an appearance drawing of the present invention;  
       FIG. 2  shows a decomposition drawing of the present invention;  
       FIG. 3  shows a circuit block of the present invention;  
       FIG. 4  shows a circuit block of a programmable chip according to the present invention;  
       FIG. 5A  shows a timing drawing of different frequencies output by the programmable chip to light-emitting elements according to the present invention;  
       FIG. 5B  is a schematic view showing the variation of persistence of vision produced from the timing shown in  FIG. 7A  when the device of the present invention moves;  
       FIG. 6A  is another timing drawing of different frequencies output by the programmable chip to light-emitting elements according to the present invention;  
       FIG. 6B  is a schematic view showing the variation of persistence of vision produced from the timing shown in  FIG. 8A  when the device of the present invention moves;  
       FIG. 7A  is another further timing drawing of different frequencies output by the programmable chip to light-emitting elements according to the present invention;  
       FIG. 7B  is a schematic view showing the variation of persistence of vision produced from the timing shown in  FIG. 9A  when the device of the present invention moves;  
       FIG. 8  is a decomposition drawing of a second embodiment according to the present invention;  
       FIG. 9  is an appearance drawing of a third embodiment according to the present invention;  
       FIG. 10  is an appearance drawing of a fourth embodiment according to the present invention; and  
       FIG. 11  is a performing block showing the rectifier filter circuit being connected to another set of circuit. 
    
    
     DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS  
      Reference is made to FIGS.  1  to  4 . An automatic power generation light-image fan device of the present invention includes a fan motor  1 , a vane set  2 , a circuit board  3 , a programmable chip  4 , an automatic power generation component  5  and a rectifier filter circuit  6 . The fan motor  1  is formed by employing a base  11  with a shaft sleeve for sleeving on a mandrel  12  of silicon steel plates and a rotor and then combining through a bolt set. Because the actions between all these components are well-known in the prior arts, they will not be further discussed here.  
      The vane set  2  has an integrally formed housing base (rim)  21  mounted therein in an approximate circular form, and a central portion of the housing base  21  further has an axle hole  22  mounted thereon for passing therethrough the mandrel  12  of the fan motor  1 . Moreover, an accommodating room  23  is formed on an inner surface of the housing base  21  passed through by the mandrel  12 , and plural vanes  24  are circularly mounted around the housing base  21 .  
      The circuit board  3  is mounted on the vanes  24  of the vane set  2  and has arranged thereon a plurality of light-emitting elements  31 . In a preferred embodiment according to the present invention, there are five light-emitting elements P 1 -P 5  with different colors, each of which is a LED.  
      The programmable chip  4  is mounted in the circuit board  3  and is a single chip having a 350 KHz oscillator  41 , a frequency selector  42 , a ROM  43 , a counter  44 , a pattern memory  45  and a buffer  46  integrated thereon. Furthermore, the programmable chip  4  also includes a power terminals VDD, VSS and plural I/O terminals L 1 -L 5 . Each I/O terminal is respectively connected to a light-emitting element  31 . Therefore, when each light-emitting element  31  is driven by the programmable chip  4 , it will depend on a control of different timings of the waveform output by the programmable chip  4  and also on different twinkling timings and orders for generating various twinkling light-image variations, as well as an effect of persistence of vision.  
      The rectifier filter circuit  6  is connected to the power terminals VDD, VSS of the programmable chip  4  and is composed of a bridge rectifier and a filter capacitance. The rectifier filter circuit  6  can rectify and filter an input AC voltage to obtain a DC voltage for supplying to the programmable chip  4 .  
      The automatic power generation component  5  has one or more permanent magnets  51 . In a preferred embodiment according to the present invention, a ring permanent magnet  51  is assembled on a turncap  5  through a connecting piece  511 . The permanent magnet  51  has an inductance coil  52  thereon circularly mounted inside the accommodating room  23  of the vane set  2  at a position corresponding to the permanent magnet  51 , and two ends of a continuous conducting line of the inductance coil  52  are connected to an input terminal of the rectifier filter circuit  6  so as to generate an electromotive force through a rotation of the mandrel  12  of the fan motor  1  for supplying to the rectifier filter circuit  6  and obtaining a DC voltage. Moreover, when the programmable chip  4  is functioned, the light-emitting element  31  is triggered so that it depends on a control of different timings of the waveform output by the programmable chip  4 , as shown in  FIG. 5A ,  FIG. 6A  and  FIG. 7A , and also on different twinkling timings and orders for generating various twinkling light-image variations, as well as an effect of persistence of vision, as shown in  FIG. 5B ,  FIG. 6B  and  FIG. 7B . In addition, between the light-emitting elements  31 , it also has an effect of light-mixing for generating different color variations.  
      Reference is made to  FIG. 11 . An input terminal of the rectifier filter circuit  6  is connected to a coupling coil  521  having an input terminal connected to a driving circuit  522 , which converts a DC voltage into an AC voltage. Accordingly, through coupling a voltage obtained from the driving circuit  522  to the rectifier filter circuit  6  by the coupling coil  521 , the rectifier filter circuit  6  can rectify and filter the input voltage for obtaining a DC voltage. At this time, the light-emitting element  31  is triggered by the programmable chip  4  so as to depend on a control of different timings of the waveform output by the programmable chip  4  and also on different twinkling timings and orders for generating various twinkling light-image variations, as well as an effect of persistence of vision. Further reference is made to  FIG. 5A , which discloses that when the first to the third LEDs P 1 -P 3  are driven by the programmable chip  4  to have a frequency with lasting light and the fourth and the fifth LEDs P 4  and P 5  have different frequencies, the fan rotates to produce a pattern shown in  FIG. 5B .  
      Further reference is made to  FIG. 6A , which discloses that when the second to the fourth LEDs P 2 -P 4  are driven by the programmable chip  4  to have a frequency with lasting light and the first and the fifth LEDs P 1  and P 5  to have different frequencies, the fan rotates to produce a pattern shown in  FIG. 6B .  
      Further reference is made to  FIG. 7A , which discloses that when the third to the fifth LEDs P 3 -P 5  are driven by the programmable chip  4  to have a frequency with lasting light and the first and the second LEDs P 1  and P 2  to have different frequencies, the fan rotates to produce a pattern shown in  FIG. 7B .  
      Furthermore, the above-mentioned automatic power generation component  5  and the rectifier filter circuit  6  also can be mounted on a suitable portion of the fan motor  1  so that the programmable chip  4  can make the automatic power generation component  5  generate an induced voltage, which is then rectified and filtered by the rectifier filter circuit  6  for obtaining a DC voltage. At this time, the programmable chip  4  triggers the light-emitting element  31  so that the light-emitting element  31  can depend on a control of different timings of the waveform output by the programmable chip  4  and also on different twinkling timings and orders for generating various twinkling light-image variations, as well as an effect of persistence of vision. In addition, between the light-emitting elements  31 , it also has an effect of light-mixing for generating different color variations.  
      Besides, the circuit board  3 , the light-emitting elements  31 , the rectifier filter circuit  6 , the programmable chip  4  and the automatic power generation component  5  according to the present invention are also suitable for application to a ceiling fan  7 , a standing fan  8 , or a transparent computer case  10  with a heat dispersing fan  9 , as shown in  FIG. 8 ,  FIG. 9  and  FIG. 10 , respectively.  
      As can be seen from the above, through the novel structure and circuit design of the present invention, the light-emitting elements mounted on the fan can be controlled to generate various twinkling light-image variations and also an effect of persistence of vision. Moreover, between the light-emitting elements, it also can have an effect of light-mixing for generating different color variations which is totally different from the prior art.  
      It is to be understood, however, that even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.