JP3601282B2 - Notebook computer - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a portable device represented by a notebook computer, and more particularly, to a device user's body when heat generated inside the device is transmitted to the surface of the device case and the temperature of the device case surface rises. The present invention relates to a notebook computer which is suitable for preventing heat generated at a portion where the device comes into contact with the surface of the device case for a long period of time from giving uncomfortable feeling to the device user.
[0002]
[Prior art]
A conventional heat dissipation method will be described with reference to a notebook computer sectional view shown in FIG. The heat source inside the computer is mainly heat generated from the CPU 6 and the power supply. In particular, the surface temperature of the CPU 6 reaches a temperature exceeding about 100 ° C. In a small notebook computer intended for portable use, a main body 1 is packed with a keyboard 3, a printed circuit board 5 on which a CPU 6 is mounted, an HDD 7 serving as an external storage device, a rechargeable battery for driving the device, and the like. Is generally equipped with an LCD panel 4 for display.
[0003]
The heat generated by the CPU 6 inside the main body 1 is transmitted to the back surface of the keyboard 3 and the aluminum plate 9 for ground through the heat radiation block 8 attached to the surface of the CPU 6. Further, the heat is transmitted to the case of the main body 1 and the surface of the keyboard 3 which are in contact therewith and dissipated from the respective surfaces into the air.
[0004]
The method of dissipating heat generated inside the notebook computer to the case is described in “Electronic Technology January 1997, Vol. 39 No. 1” issued by the Nikkan Kogyo Shimbun on December 1, 1996. This is described as “Heat measures in notebook personal computers” (P46 to P49).
[0005]
[Problems to be solved by the invention]
Notebook computers intended for portable use sometimes have the device placed on the user's lap. In this case, heat generated inside the device may cause discomfort to the device user when the temperature of the portion where the body of the device user is in contact with the surface of the device case for a long time, for example, the temperature of the bottom of the device or the keyboard increases. Become.
[0006]
SUMMARY OF THE INVENTION It is an object of the present invention to provide a notebook computer capable of suppressing a rise in temperature on the surface of a main body case by transmitting heat generated inside the device to a portion that is not touched by a user of the device during use and radiating heat. It is in.
[0007]
[Means for Solving the Problems]
Insulation between the heat generating part inside the device and the device case is blocked by heat insulating material, and the generated heat is transferred to the heat radiating plate provided on the back of the display unit using a heat pipe. The heat is dissipated by using the chimney effect of the ventilation holes provided in the hood.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of a notebook computer according to the present invention will be described in detail with reference to the drawings.
[0009]
A notebook computer to which the heat dissipation method according to the present embodiment is applied will be described with reference to the cross-sectional view of FIG. In FIG. 1, a printed circuit board 5 on which a CPU 6 and other components are mounted and an HDD 7 are housed inside a main body 1, and a ground aluminum plate 9 is laid between the printed circuit board 5 and a case bottom. Further, a heat radiating block 8 is adhered to the printed circuit board 5 and the CPU 6, and a heat pipe 11 is connected to the heat radiating block. The printed circuit board 5, the keyboard 3, the HDD 7, the ground aluminum plate 9, and the case of the main body 1 Between them is a structure surrounded by a heat insulating material 10. Next, a method of transmitting heat inside the main body will be described. The heat of the CPU 6 on the upper surface of the printed circuit board 5 is transmitted to the heat radiating block 8 connected to the CPU 6, and the heat radiating block 8 on the lower surface of the printed circuit board 5 is And collects heat of other heat-generating components mounted on the printed circuit board 5. The heat collected in the heat radiating block 8 is transmitted to the heat radiating place through the heat pipe 11. Also, heat generated from a power supply unit other than the printed circuit board 5 and the HDD 7 can be collected by connecting the heat pipe 11 to the ground aluminum plate 9.
[0010]
FIG. 2 is a perspective view illustrating a structure of a connection portion between the main body 1 and the display 2 according to the present embodiment. The connecting portion has a structure in which the convex portion of the display portion 2 fits into the concave portion of the main body portion 1. On one surface of the protruding portion of the display unit 2, there is a connection fitting 17 for fixing the main body 1 and the display unit 2, and the two can be opened and closed with the hinge fitting 14 as a fulcrum. A hole is formed on the surface of the display unit 2 opposite to the convex portion on the central axis of the hinge fitting 14, and the heat pipe 11 is passed from the main body 1. A part of the heat pipe 11 is connected to a heat pipe connector 12 having flexibility.
[0011]
FIG. 3 is a diagram showing the structure of the heat pipe connector 12. A metal heat pipe 11 is connected with a rubber layer 18 as an inner layer and a metal mesh layer 19 as an outer layer. The rubber layer 18 is used for providing flexibility. The metal mesh layer 19 prevents the rubber layer 18 from being deformed by the pressure generated when the heat pipe 11 operates. By using the heat pipe connector 12, the heat pipe 11 can follow the opening and closing of the main body 1 and the display 2 as well.
[0012]
FIG. 4 is an internal structure diagram showing a heat radiation part of the present embodiment. This shows a state in which the LCD unit 4 is detached from the display unit 2 and viewed from the front, and a heat pipe 11 from the main unit 1 is connected to the heat sink 13.
[0013]
FIG. 5 is a sectional view taken along line AA ′ of FIG. Inside, there are an LCD unit 4, a heat insulating material 10, a heat pipe 11, and a heat radiating plate 13. The upper and lower parts of the case have an intake port 16 and an exhaust port 15, respectively. The heat generated in the main body 1 is transmitted through the heat pipe 11 and transmitted to the heat radiating plate 13. Since the LCD unit 4 is weak against heat, a heat insulating material 10 is provided between the heat radiating plate 13 and the LCD unit 4 to block heat. The heat transmitted from the heat pipe 11 to the heat radiating plate 13 spreads to the heat radiating plate 13 and is transmitted to the case of the display unit 2 to be radiated into the air. Also, since the display unit 2 is used in a standing state during use, natural convection of air occurs due to a chimney effect by providing an exhaust port 15 at the upper part and an intake port 16 at the lower part. The effect can be improved. Further, if the heat insulating material 10 is added between the case of the display unit 2 and the heat radiating plate 13, it is possible to suppress the temperature rise on the surface of the display unit case.
[0014]
Here, the heat pipe 11 does not pass through the connecting portion between the main unit 1 and the display unit 2 shown in FIG. A method is also possible.
[0015]
The structure of the notebook computer thus configured is such that heat generated inside the main body 1 is less likely to be transmitted to the keyboard 3 of the case of the main body 1 and the heat source is blocked by a heat insulating material. Since it is possible to protect heat-sensitive components such as the HDD 7 in the inside and to suppress a rise in the temperature of the case surface of the main body 1, it is possible to realize an apparatus having a structure that does not give a user discomfort due to heat generation. It is possible.
[0016]
【The invention's effect】
As described above, the notebook computer according to the present invention can suppress an increase in the temperature of the surface of the apparatus and prevent the user from feeling uncomfortable. In addition, the amount of heat released to the device case is limited due to the recent reduction in size of the device, and it may not be possible to cope with an increase in the amount of heat generated when the performance of the CPU or the like is increased. Can be performed efficiently.
[Brief description of the drawings]
FIG. 1 is a sectional view of a main body of a notebook computer according to an embodiment of the present invention.
FIG. 2 is a perspective view showing a connection portion between a main body portion and a display portion of the notebook computer according to the embodiment of the present invention.
FIG. 3 is an internal structural view of a heat pipe connection body showing one embodiment of the present invention.
FIG. 4 is an internal structure diagram of a display unit of the notebook computer according to the embodiment of the present invention.
FIG. 5 is a sectional view of a display unit of the notebook computer according to the embodiment of the present invention.
FIG. 6 is a sectional view showing the structure of a conventional notebook computer.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Notebook computer main body part, 2 ... Display part, 3 ... Keyboard, 4 ... LCD panel, 5 ... Printed circuit board, 6 ... CPU, 7 ... HDD, 8 ... Heat dissipation block, 9 ... Ground aluminum plate, 10 ... Insulation material, 11: heat pipe, 12: heat pipe connection, 13: heat sink, 14: hinge fitting, 15: exhaust port, 16: intake port, 17: connection fitting, 18: rubber layer, 19: metal mesh layer .

Claims (1)

An electronic component that generates heat, a main body case having the electronic component, a heat insulating material installed between the bottom surface of the main body case and a keyboard so as to surround a printed board on which the electronic component is mounted , a display unit, and the display unit; A display case having a portion, a radiator plate provided between the display unit and the back surface of the display case, and a natural convection air for cooling the radiator plates provided above and below the display case. a ventilation hole for the hinge for opening and closing the display casing with respect to the main body case, at least the hinge and connecting portion part of which forms a part and the display case of the main body case, the heat radiation from the electronic component It has a heat pipe that transfers heat to the board,
The heat pipe includes a first heat pipe partially connected to the electronic component, a second heat pipe partially connected to the radiator plate, and the first heat pipe at the connection portion. notebook type computers and having a heat pipe connecting section of the heat pipe and the second heat pipe connecting with flexibility.

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