Band-type fan structure

Abstract

A band-type fan structure includes a transmission band body and multiple blades. The transmission band body has a lengthwise direction and a widthwise direction. The blades are side by side disposed on the transmission band body in parallel to each other and arranged in the lengthwise direction of the transmission band body. Each two adjacent blades define therebetween a flow way. The transmission band body is movable in the lengthwise direction, whereby the blades are driven by the transmission band body to transversely move to create an air volume. The band-type fan structure has a greatly minified volume. Also, the band-type fan structure overcomes the shortcoming of unstable operation of the conventional fan caused by deflection of the blades.

What is claimed is: 
     
         1 . A band-type fan structure comprising:
 a transmission band body having a lengthwise direction and a widthwise direction; and   multiple blades side by side disposed on the transmission band body in parallel to each other and arranged in the lengthwise direction of the transmission band body, each two adjacent blades defining therebetween a flow way, the transmission band body being movable in the lengthwise direction, whereby the blades are driven by the transmission band body to transversely move.   
     
     
         2 . A band-type fan structure comprising:
 a transmission band body having a lengthwise direction and a widthwise direction; and   multiple blades side by side disposed on the transmission band body in parallel to each other and arranged in the lengthwise direction of the transmission band body, each blade having a main body disposed on a surface of the transmission band body and a first end extending from the main body in the widthwise direction of the transmission band body, each two adjacent blades defining therebetween a flow way, the transmission band body being movable in the lengthwise direction, whereby the blades are driven by the transmission band body to transversely move.   
     
     
         3 . The band-type fan structure as claimed in  claim 2 , further comprising a case having at least one bottom board and two sidewalls disposed on two opposite sides of the bottom board, the bottom board and the sidewalls together defining a receiving space for receiving the transmission band body and the blades, the receiving space communicating with the flow ways between the blades. 
     
     
         4 . The band-type fan structure as claimed in  claim 3 , wherein the surface of the transmission band body has multiple connected sections arranged in the lengthwise direction, one face of the main body of the blade, which face is proximal to the transmission band body, has a connection section connected to the connected section. 
     
     
         5 . The band-type fan structure as claimed in  claim 4 , wherein the connected section is an insertion hole or a threaded hole and the connection section is an insertion pin or a screw, the connection section being connected to the connected section by means of insertion or screwing. 
     
     
         6 . The band-type fan structure as claimed in  claim 1 , wherein the blades are wing-shaped. 
     
     
         7 . The band-type fan structure as claimed in  claim 1 , wherein the blade further has a second end extending from the main body in the widthwise direction of the transmission band body opposite to the first end. 
     
     
         8 . The band-type fan structure as claimed in  claim 7 , wherein the first and second ends of the blade are made of flexible material. 
     
     
         9 . The band-type fan structure as claimed in  claim 5 , wherein the lengthwise direction and the widthwise direction of the transmission band body together define a passageway in communication with the connected sections. 
     
     
         10 . The band-type fan structure as claimed in  claim 1 , further comprising a power member connected to the transmission band body, whereby the blades can be driven by the transmission band body to transversely move. 
     
     
         11 . The band-type fan structure as claimed in  claim 10 , wherein the power member has multiple transmission shafts and a power source, the transmission shafts being positioned on two sides of the passageway and connected with the power source.