Heat sink and information processor using heat sink

Abstract

The present invention relates to a heat sink. More particularly, the present invention relates to a heat sink used for radiating heat from an integrated circuit package such as a micro-processor arranged in a portable type electronic apparatus such as a notebook type personal computer and also used for radiating heat from a hard disk unit used in an electronic apparatus. The heat sink comprises: a heat transmitting member for transmitting heat generated by a heating component; a holding section for holding the heat transmitting member; and a heat sink body having a space in which a cooling fan having at least blades and a drive motor is embedded, wherein a portion of the holding section for holding the heat transmitting member, the portion being located below the space, is cut out.

1 . A heat sink comprising: a heat transmitting member for transmitting heat generated by a heating component; a holding section for holding the heat transmitting member; and a heat sink body having a space in which a cooling fan having at least blades and a drive motor is embedded, wherein a portion of the holding section for holding the heat transmitting member, the portion being located below the space, is cut out.  
     
     
         2 . The heat sink according to  claim 1 , wherein the heat sink body is accommodated in a box for controlling a flow of air generated by the cooling fan.  
     
     
         3 . The heat sink according to  claim 1 , further comprising a printed board for holding the cooling fan, wherein the printed board has ventilation holes in which an air flow generated by the fan assembly flows, and a portion of the drive circuit to drive the motor is mounted on the printed board.  
     
     
         4 . The heat sink according to  claim 1 , further comprising a cover to be put on the heat sink body, wherein the cover has a spacer, the height of which is sufficiently large for forming an air gap on the surface of the heat sink body, and also the cover has a hole to fix a bearing of the cooling fan.  
     
     
         5 . The heat sink according to  claim 1 , wherein peripheries of the blades in the depth direction are surrounded by a venturi.  
     
     
         6 . A heat sink comprising: a heat transmitting member for transmitting heat generated by a heating component; a holding section for holding the heat transmitting member; and a heat sink body having a space in which a cooling fan having at least blades and a drive motor is embedded, the heat sink body being arranged at a position different from a position at which the heating component is arranged, wherein heat generated by the heating component is transmitted by the heat transmitting member and cooled by the heat sink body.  
     
     
         7 . An information processor comprising: a heat transmitting member for transmitting heat generated by a heating component; a holding section for holding the heat transmitting member; and a heat sink body having a space in which a cooling fan having at least blades and a drive motor is embedded, the heat sink body being arranged at a position different from a position at which the heating component is arranged, wherein heat generated by the heating component is transmitted by the heat transmitting member and cooled by the heat sink body.  
     
     
         8 . An information processor comprising: a heat transmitting member for transmitting heat generated by a heating component; a holding section for holding the heat transmitting member; and a heat sink body having a space in which a cooling fan having at least blades and a drive motor is embedded, wherein the heat sink body is embedded in a frame of the apparatus.  
     
     
         9 . The information processor according to  claim 8 , further comprising rod-shaped fins for partially closing ventilation holes of the cooling fan embedded in the heat sink body.  
     
     
         10 . The information processor according to  claim 8 , wherein peripheries of the blades in the depth direction are surrounded by a venturi.  
     
     
         11 . The information processor according to  claim 8 , wherein ventilation holes are formed on a surface of the heat sink body located on the side of the heating component.  
     
     
         12 . The information processor according to  claim 8 , wherein suction holes connected to the heat sink body are formed in the frame of the apparatus, and ventilation holes are formed in the heat sink body corresponding to the suction holes.  
     
     
         13 . A heat sink comprising: a heat conveyance member for transmitting heat generated by a heating component; and a centrifugal blower section composed of a cover having blades and a drive motor and also composed of a casing made of a highly conductive material, wherein the heat conveyance member adheres to an outer circumference of the casing or a portion of the outer circumference of the casing.  
     
     
         14 . A heat sink comprising: a heat conveyance member for transmitting heat generated by a heating component; and a cross flow fan section composed of blades and a drive motor and also composed of a casing made of a highly conductive material, wherein the heat conveyance member adheres to an outer circumference of the casing or a portion of the outer circumference of the casing.  
     
     
         15 . A heat sink comprising: a heat conveyance member for transmitting heat generated by a heating component; a heat exchanging section adhering to the heat conveyance member for exchanging heat; and an axial blower, wherein the heat exchanging section has a ventilating passage inside in the height direction of the blower, and the heat conveyance member adheres to the heat exchanging section.  
     
     
         16 . A heat sink comprising: a heat conveyance member for transmitting heat generated by a heating component; an axial blower section having blades, a drive motor and a casing made of a highly conductive material; and a heat exchanging section to which the heat conveyance member adheres so as to exchange heat, wherein the casing is extended in the height direction to form the heat exchanging section, and the heat conveyance member is made to adhere to the heat exchanging section.  
     
     
         17 . A heat sink comprising: a heat conveyance member for transmitting heat generated by a heating component; and an axial blower section having blades, a drive motor and a casing made of a highly conductive material, wherein the heat conveyance member is made to adhere onto the outer circumference of the casing or a portion of the outer circumference of the casing.  
     
     
         18 . A heat sink comprising: a heat conveyance member for transmitting heat generated by a heating component; and an axial blower section having blades, a drive motor and a casing made of a highly conductive material, wherein the casing is composed of the heat conveyance member.  
     
     
         19 . A heat sink comprising: a heat conveyance member for transmitting heat generated by a heating component; and a heat sink body into which a fan and heat radiating fins are incorporated, wherein the heat conveyance member is made to adhere onto the side of the heat sink body.  
     
     
         20 . The heat sink according to  claim 13 ,  14 , or  17 , wherein the casing is divided into parts within the height of the adhering section in which the casing and the heat conveyance member adhere to each other.  
     
     
         21 . The heat sink according to  claim 13 ,  15 ,  16 , or  17 , wherein the heat conveyance member is formed into a cylinder or a portion of the heat conveyance member is formed into a cylinder, and the heat conveyance member is made to adhere to the casing.  
     
     
         22 . The heat sink according to  claim 13 ,  14 ,  15 ,  16 ,  17 , or  19 , wherein a section of the groove of the casing or a section of the groove of the heat sink body, into which the heat conveyance member is made to adhere, is formed into a circle.  
     
     
         23 . The heat sink according to  claim 13 ,  14 ,  15 ,  16 ,  17 , or  19 , wherein a section of the casing and a section of the heat sink body, to which the heat conveyance member is made to adhere, are formed into a rectangle.  
     
     
         24 . The heat sink according to  claim 13  or  14 , wherein heat radiating fins made of the same material as that of the casing are formed in the heat sink body close to the discharge port of the fan.  
     
     
         25 . The heat sink according to  claim 13  or  14 , wherein the heat exchanging section to exchange heat with the heat conveyance member is provided on the casing portion exposed to a high air pressure from the fan, and on the side portion of the heat sink body adjacent to the casing portion.  
     
     
         26 . The heat sink according to  claim 13 , wherein the height of the heat radiating fin is increased to the height of the air gap formed in the sucking section.  
     
     
         27 . An information processor comprising: a suction port of the heat sink arranged on one surface of the corner section of the apparatus; and a discharge port of the heat sink arranged on the other surface of the corner section of the apparatus.  
     
     
         28 . The heat sink according to  claim 16 , wherein the heat sink body for heat radiation is arranged at the edge close to the heat exchanging section.  
     
     
         29 . The heat sink according to  claim 15  or  16 , wherein an air gap is formed between the blades of the fan and the heat exchanging section.  
     
     
         30 . A heat sink comprising: a heat conveyance member for transmitting heat generated by a heating component; a heat exchanging section adhering to the heat conveyance member so as to exchange heat; and an axial fan, wherein a portion of the heat exchanging section is arranged on the side of the fan, fins are arranged at the suction or discharge port of the fan, and the heat conveyance member is made to adhere to the heat exchanging section.  
     
     
         31 . A heat sink comprising: a heat transmitting member for transmitting heat generated by a heating component; and a cross flow fan section in which the direction of a suction wind and the direction of a discharge wind are the same, including fan blades, a drive motor and a casing made of a heat conductive material, wherein the heat transmitting member is fixed to the outer circumference of the casing or fixed to a portion of the outer circumference of the casing.  
     
     
         32 . The heat sink according to  claim 13  or  14 , wherein radiating fins are provided in a portion close to the discharge port of the fan, the radiating fins are made of the same material as that of the casing, the heights of the radiating fins are smaller than the height of the discharge port, and a space is formed in an upper portion of the radiating fins.  
     
     
         33 . The heat sink according to  claim 13  or  14 , wherein the casing is formed into a shape so that the radius of curvature of the heat transmitting member attached along the outside of the casing can be minimized as long as the heat transmitting member can be formed.  
     
     
         34 . A heat sink comprising: a heat transmitting member for transmitting heat generated by a heating component; fan blades; a drive motor; and a casing made of a heat conductive material, wherein the bottom of the casing is cut away to the same size as that of the fan blades, or to a size larger than that of the fan blades.  
     
     
         35 . The heat sink according to  claim 34 , wherein a plurality of protrusions or spaces are provided on the bottom surface of the casing.  
     
     
         36 . The heat sink according to  claim 34 , wherein a flat type heat transmitting member is attached onto the bottom surface of the casing so that the heat transmitting area of the heat transmitting member can come into contact with the bottom surface of the casing.