Heat transfer member, convex structural member, electronic apparatus, and electric product

Abstract

A heat transfer member ( 20 ) has a support ( 1 ), and columnar bodies ( 2 ) all or some of which are disposed so as to be inclined at an angle with respect to the support ( 1 ). The columnar bodies ( 2 ) are in contact with a contacted body ( 21 ), and the columnar bodies ( 2 ) elastically deform and/or plastically deform along the shape of the contact surface with the contacted body ( 21 ) to thereby make direct contact along the wavy and rough irregularities of the contacted body ( 21 ), and to cause heat to move through the columnar bodies ( 2 ).

1 . A heat transfer member comprising:
 a support; and   a plurality of columnar bodies, at least a portion of said columnar bodies being inclined at an angle with respect to said support, wherein   distal ends of the said columnar bodies contact a contact surface of a contacted body, and said columnar bodies being dimensioned to elastically deform such that the distal ends of the columnar bodies conform to non-planar shapes of the contact surface of said contacted body to thereby make heat conducting contact therebetween.   
   
   
       2 . The heat transfer member according to  claim 1 , wherein said columnar bodies are formed at an inclined angle of 10 to 80° from a line perpendicular to said support. 
   
   
       3 . The heat transfer member according to  claim 2 , wherein a ratio θ 1 /θ 2  is 1 or less, where θ 1  is an angle of a line that connects a center and a base portion of said columnar bodies from the line perpendicular to said support, and θ 2  is the angle of a line that connects the center and the distal end of said columnar bodies from the line perpendicular to said support. 
   
   
       4 . The heat transfer member according to  claim 1 , wherein a ratio S 1 /S 2  is 1 or less, where S 1  is the cross-sectional surface area of the distal end of said columnar bodies, and S 2  is the cross-sectional surface area of a base portion of said columnar bodies. 
   
   
       5 . The heat transfer member according to  claim 1 , wherein at least a portion of said columnar bodies have a structure that includes a curve. 
   
   
       6 . The heat transfer member according to  claim 5 , wherein a ratio r 2 /r 1  is 1 or less, where r 1  is the radius of curvature of a curve defined from a base portion to the center of said columnar bodies, and r 2  is the radius of curvature of a curve from the center to the distal end of said columnar bodies. 
   
   
       7 . The heat transfer member according to  claim 1 , wherein 50% or more of said columnar bodies are in contact with said contacted body. 
   
   
       8 . The heat transfer member according to  claim 1 , wherein 50% or more of the columnar bodies in contact with said contacted body are in contact with said contacted body at a side surface portion of said columnar bodies. 
   
   
       9 . The heat transfer member according to  claim 1 , wherein the force for pressing said columnar bodies against said contacted body is 0.01 g or more per columnar body, and the total force of pressing said columnar bodies against said contacted body is preferably 95% or less of the breaking force of said contacted body. 
   
   
       10 . The heat transfer member according to  claim 1 , wherein a surface area of the support on which said columnar bodies are disposed is greater than a surface area of a heat source disposed on one side of said contacted body. 
   
   
       11 . The heat transfer member according to  claim 1 , wherein a contact heat resistance between said columnar bodies and said contacted body is 0.3 K/mm 2 ·W or less. 
   
   
       12 . The heat transfer member according to  claim 11 , wherein the contact heat resistance between said columnar bodies and said contacted body is 0.1 K/mm 2 ·W or less. 
   
   
       13 . An electronic apparatus having the heat transfer member according to  claim 1 . 
   
   
       14 . An electric product having the heat transfer member according to  claim 1 . 
   
   
       15 . A convex structural member comprising a convex structural unit composed of a plurality of convex structures, wherein all or some of said convex structures are in contact with a contacted body and undergo elastic and/or plastic deformation along the shape of a contact surface of said contacted body, whereby heat is moved via said convex structural unit that is in direct contact along wavy and rough irregularities of said contacted body and is in direct contact with said contacted body. 
   
   
       16 . The convex structural member according to  claim 15 , further comprising a support ( 1 ), wherein said convex structural unit is composed of an assembly of a plurality of columnar bodies ( 2 ) supported by said support ( 1 ). 
   
   
       17 . The convex structural member according to  claim 16 , wherein all or some the assembly of said columnar bodies is a structure that includes a curve. 
   
   
       18 . (canceled) 
   
   
       19 . (canceled) 
   
   
       20 . (canceled) 
   
   
       21 . (canceled) 
   
   
       22 . (canceled) 
   
   
       23 . (canceled) 
   
   
       24 . The convex structural member according to  claim 16 , wherein said convex structural unit is a porous body disposed between said contacted body and said support. 
   
   
       25 . (canceled) 
   
   
       26 . (canceled) 
   
   
       27 . (canceled) 
   
   
       28 . (canceled) 
   
   
       29 . The convex structural member according to  claim 15 , wherein said convex structural unit is composed of at least one of metal and resin which includes in dispersed form a material that has higher thermal conductivity than the main component resin. 
   
   
       30 . (canceled) 
   
   
       31 . (canceled) 
   
   
       32 . The convex structural member according to  claim 15 , further comprising a coated film composed of a material that is coated onto said convex structural unit and has higher thermal conductivity than the convex structural unit. 
   
   
       33 . The convex structural member according to  claim 15 , further comprising a coated film composed of a material that is coated onto said convex structural unit and has higher resistance to oxidation and/or corrosion than the convex structural unit. 
   
   
       34 . The convex structural member according to  claim 15 , further comprising a coated film that is coated onto said convex structural unit and has a radiation rate that is greater than 0.5. 
   
   
       35 . (canceled) 
   
   
       36 . An electronic apparatus having the convex structural member according to  claim 15 . 
   
   
       37 . An electric product having the convex structural member according to  claim 15 .