Fan structure

Abstract

According to some aspects of the present disclosure, a fan structure includes a support, a fan mounted on the support, and a thermochromic material disposed on or in the support or the fan, and including multiple portions, each portion having a respective color-transition temperature at which the respective portion changes between a respective first color state and a respective second color state, the color-transition temperatures of the multiple portions being different from each other.

What is claimed is: 
     
         1 . A fan structure, comprising:  
       a support; 
       a fan movably disposed on the support; and 
       a thermochromic material disposed on or in the support or the fan.  
     
     
         2 . The fan structure of  claim 1 , wherein the thermochromic material is embedded in the support or the fan. 
     
     
         3 . The fan structure of  claim 1 , wherein the thermochromic material is embedded in the support or the fan by injection molding. 
     
     
         4 . The fan structure of  claim 1 , wherein the weight percentage of the thermochromic material in the support or the fan is 0.1~5% w/w. 
     
     
         5 . The fan structure of  claim 1 , wherein the thermochromic material comprises particles with a size of 310 μm±10%. 
     
     
         6 . The fan structure of  claim 1 , wherein the thermochromic material comprises a leuco dye, a chromogenic agent and a one temperature controller. 
     
     
         7 . The fan structure of  claim 6 , wherein the comprises a plurality of groups of temperature-sensitive powders, wherein the colors presented by the temperature-sensitive powders are different from each other. 
     
     
         8 . The fan structure of  claim 7 , wherein the temperature-sensitive powders include a first temperature-sensitive powder, a second temperature-sensitive powder, a third temperature-sensitive powder and a fourth temperature-sensitive powder, and the first temperature-sensitive powder to the fourth temperature-sensitive powder correspond to rose red, blue, yellow and purple, respectively. 
     
     
         9 . The fan structure of  claim 8 , wherein the temperature-controlling agent includes a first temperature-controlling agent, a second temperature-controlling agent, a third temperature-controlling agent and a fourth temperature-controlling agent, and the action temperatures of the first temperature-controlling agent to the fourth temperature-controlling agent correspond to 43°C, 38°C, 31°C and 25°C, respectively, so as to selectively present the colors of the first temperature-sensitive powder to the fourth temperature-sensitive powder, respectively. 
     
     
         10 . The fan structure of  claim 1 , wherein the color change range of the thermochromic material is -15°C to 70°C. 
     
     
         11 . A fan structure, comprising: 
 a support;   a fan mounted on the support; and   a thermochromic material disposed on or in the support or the fan, and comprising a plurality of portions, each portion having a respective color-transition temperature at which the respective portion changes between a respective first color state and a respective second color state,   the color-transition temperatures of the plurality of portions being different from each other.   
     
     
         12 . The fan structure of  claim 11 , wherein: 
 the first color states of the plurality of portions are the same; and   the second color states of the plurality of portions are different from each other.   
     
     
         13 . The fan structure of  claim 11 , where: 
 the plurality portions of the thermochromic material are substantially colorless in the first color state; and   each of the plurality of portions of the thermochromic material exhibits a respective color in the respective second color state, the exhibited colors of the plurality of portions of the thermochromic material being different from each other.   
     
     
         14 . The fan structure of  claim 11 , wherein each of the plurality of portions of the thermochromic material is in the respective first color state when temperature is above the respective color-transition temperature and in the respective second color state when temperature is below the respective color-transition temperature. 
     
     
         15 . The fan structure of  claim 11 , wherein each of the plurality of portions of the thermochromic material comprises a leuco dye, a chromogenic agent, and a temperature controller, wherein the temperature controller is adapted to set the color-transition temperature of the respective portion. 
     
     
         16 . A method of indicating temperature, the method comprising: 
 changing a color state of a fan structure from a first color state to a second color state at a first color-transition temperature, wherein the fan structure exhibits a first color in the first color state and a second color at a second color state.   
     
     
         17 . The method of  claim 16 , further comprising changing the color state of the fan structure from the second color state to a third color state at a second color-transition temperature, wherein the fan structure exhibits a third color in the third color state. 
     
     
         18 . The method of  claim 16 , wherein the changing the color state comprises including a thermochromic material having the first color-transition temperature in the fan structure. 
     
     
         19 . The method of  claim 17 , wherein: 
 the changing the color state from the first color state to the second color state comprises including a first thermochromic material having the first color-transition temperature in the fan structure; and   the changing the color state from the second color state to the third color state comprises including a second thermochromic material having the second color-transition temperature in the fan structure.