these and other objects and advantages of the present invention will become apparent from the following description of the accompanying drawings , which disclose several embodiments of the present invention . it is to be understood that the drawings are to be used for purposes of illustration only , and not as a definition of the invention . please refer to fig1 , which illustrates a schematic drawing of the deflection device in the first embodiment of the present invention . the deflection device of the present invention is applied to an electronic device , such as a desktop computer , but the present invention is not limited to that application . in the first embodiment of the present invention , the deflection device 10 a includes a first fixed part 21 , a second fixed part 22 , and a plurality of strip structures 30 a . the first fixed part 21 and the second fixed part 22 are fastened to the internal structure in the electronic device 1 , such as fastened to the wall of the case 2 ( as shown in fig2 ) or to the wind scoop 70 ( as shown in fig4 a ). the plurality of strip structures 30 a can be made of deformable and elastically restored sheet - like material with softness and toughness , such as a polycarbonate film , but the present invention is not limited to that design . the two ends of each strip structure 30 a are respectively connected to the first fixed part 21 and the second fixed part 22 , and any two adjacent strip structures 30 a are not connected to each other , allowing each strip structure 30 a to undergo compression deformation independently in the first embodiment , the plurality of strip structures 30 a can be divided into a first section 31 , a second section 32 , and a third section 33 according to the shape . one end of the first section 31 is connected to the first fixed part 21 . one end of the second section 32 is connected to the second fixed part 22 . the two ends of the third section 33 are respectively connected to an end of the first section 31 and an end of the second section 32 . the third section 33 is located between the first section 31 and the second section 32 . the first section 31 faces an incoming direction of the airflow f , and a wind angle θ is formed between the first section 31 and the first fixed part 21 along a direction which faces the incoming direction of the airflow f . in the present embodiment , the wind angle θ is larger than 90 °, allowing the first section 31 to be a tilted backwards shape relative to the first fixed part 31 . in addition , if the strip structure 30 a is made of a soft material , such as a polycarbonate film , then a metal spring structure 40 can be additionally fixed on the first section 31 and the first fixed part 21 along the direction which faces the incoming direction of the airflow f to increase the support force and the resilience of the first section 31 and the first fixed part 21 . however , in another embodiment , if the strip structure 30 a is made of another material with great flexibility and strong support force , the metal spring structure 40 may not be additionally added in the present invention . in addition , in the present embodiment , the second section 31 is substantially parallel to the first section , and the first fixed part 21 and the second fixed part 22 are located on a same virtual plane , allowing the first fixed part 21 , the second fixed part 22 , the first section 31 , the second section 32 , and the third section 33 together to form a structure similar to a parallelogram . please refer to fig2 , which illustrates a schematic drawing of the deflection device applied to the computer device in the first embodiment of the present invention . the deflection device 10 a of the present invention is applied to the electronic device 1 . the electronic device 1 can be a computer system , such as a desktop computer , but the present invention is not limited to that application . the electronic device 1 includes a case 2 , a fan device 50 , an electronic component , and other circuit elements ( not shown in the figure ). in the first embodiment of the present invention , the electronic component is an interface card 60 , but the present invention is not limited to the interface card 60 . the deflection device 10 a , the fan device 50 , and the interface card 60 are all located in the case 2 , and the first fixed part 21 and the second fixed part 22 of the deflection device 10 a are fastened to the top of the case 2 . therefore , the first section 31 , the second section 32 , the third section 33 , and the case 2 together form a parallelogram . the fan device 50 is used for generating airflow to dissipate the heat generated by the interface card 60 . via the shape formed by the deflection device 10 a and the case 2 of the electronic device 1 , the incoming direction of the airflow ( inter flow ) f generated by the fan device 50 will be changed to form a guided flow f ′ that is guided to the at least one interface card 60 , such that the heat from the interface card 60 can be dissipated efficiently please refer to fig3 , which illustrates a schematic drawing of the deflection device applied to a different interface card in the first embodiment of the present invention . in the plurality of strip structures 30 a , the width of each strip structure 30 a corresponds to the width of the interface card 60 . since each strip structure 30 a can undergo compression deformation independently , the shape of each strip structure 30 a can be flexibly changed according to the assembly height of the coordinating interface card 60 . as shown in fig3 , when the specific interface card 61 is installed in the electronic device 1 , the third section 33 of the corresponding strip structure 301 of the plurality of strip structures 30 a will be contacted and pushed upward by the specific interface card 61 such that the shape of the strip structure 301 will be changed based on the height of the specific interface card 61 when installed to form the second shape ; i . e ., the height of the third section 33 of the corresponding strip structure 301 will be changed , but the change will not affect the shape or height of other strip structures 30 a . the specific interface card 61 can be an interface card with a large size , but if the specific interface card 61 is an interface card with a small size , the shape of the corresponding strip structure 301 can also be adjusted . therefore , the shape of the strip structure 30 a can be changed automatically when the strip structure 30 a is in contact with interface cards 60 of different specifications . in addition , when the specific interface card 61 is removed from the electronic device 1 , the corresponding strip structure 301 can return to its original first shape due to the structure of the strip structure 301 or the elasticity of the metal spring structure 40 . according to the abovementioned description , each strip structure 30 a of the deflection device 10 a can coordinate with the height of the corresponding electronic component installed under the strip structure 30 a to correspondingly and elastically change in shape ; also , the strip structure 30 a may lie flat against the top of the case 2 so as not to occupy the internal space of the case 2 . it is to be known that the second fixed part 22 of the deflection device 10 a does not need to be fastened to the case 2 , nor does the deflection device 10 a need to have the second fixed part 22 ; due to the feature of the material of the strip structure 30 a , the desired deformation and elastic restoring force can be achieved . please refer to fig4 a - 4b , which illustrate schematic drawings of the deflection device applied to a computer device in the second embodiment of the present invention . the deflection device 10 a of the present invention is not limited to being fastened to the case 2 of the electronic device 1 . in the second embodiment of the present invention , the electronic device 1 may have a wind scoop 70 . the wind scoop 70 is located on the inlet of the fan device 50 so that the airflow generated by the fan device 50 can be more efficiently guided to the interface card 60 . the deflection device 10 a is connected to the inside of the wind scoop 70 and located on the interface card 60 . the shape of the strip structure 30 a of the deflection device 10 a can also be changed according to different configurations of the interface cards 60 . since the shape of the deflection device 10 a in the second embodiment is the same as the shape in the first embodiment , and the working method is the same , there is no need for further description . please refer to fig5 , which illustrates a lateral view of the deflection device in the third embodiment of the present invention . in the third embodiment of the present invention , the deflection device 10 b also includes the first fixed part 21 , the second fixed part 22 , and the plurality of strip structures 30 b . the plurality of strip structures 30 b also include a first section 31 , a second section 32 , and a third section 33 , but the first section 31 , the second section 32 , the third section 33 , and a virtual plane where the first fixed part 21 and the second fixed part 22 are located form only a quadrilateral ( such as a keystone ) and do not form a parallelogram as in the first embodiment . due to the shape , the deflection device 10 b can still guide the airflow to different interface cards 60 . please refer to fig6 , which illustrates a lateral view of the deflection device in the fourth embodiment of the present invention . in the fourth embodiment of the present invention , the length of the third section 33 of each strip structure 30 c of the deflection device 10 c , for contacting the corresponding interface card 60 , is reduced to form a transition structure that connects to the first section 31 and the second section 32 , allowing a specific angle between the first section 31 and the second section 32 to be less than 180 °. thus , the first section 31 , the second section 32 , the third section 33 , and the virtual plane where the first fixed part 21 and the second fixed part 22 are located together form a triangle . due to the shape , the deflection device 10 c still can guide the airflow to different interface cards 60 , and the area of contact between the strip structure 30 c and the interface card 60 is reduced . please refer to fig7 , which illustrates a lateral view of the deflection device in the fifth embodiment of the present invention . the difference between the fifth embodiment and the abovementioned embodiment is that the third section 33 is an arc - shaped structure . via the deflection device 10 d , the airflow still can be guided to different interface cards 60 . however , it will be obvious to people who have general knowledge of the art of the present invention that the third section 33 can also be other shapes , as long as the shape can achieve the object of the present invention : to contact to the interface card 60 and to connect to the first section 31 and the second section 32 . with the application of the abovementioned devices from deflection device 10 a to 10 d , the airflow generated by the fan device 50 can be guided to an interface card 60 of any size . it is noted that the above - mentioned embodiments are only for illustration . it is intended that the present invention cover modifications and variations of this invention provided they fall within the scope of the following claims and their equivalents . therefore , 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 .