JPH11202978A - Notebook-sized computer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress the elevation of temperature on the surface of a main body case by intercepting a heating part inside a device and a device case with a heat insulator, conducting generated heat through a heat pipe to a radiation board on the rear side of a display part and radiating the heat through the chimney effect of ventilation holes on the upper and lower sides of a display part case. SOLUTION: A printed circuit board 5 and an HDD 7 are housed inside a main body part 1, and an aluminum board 9 for ground is laid on a gap with the base part of the case. Besides, a heat pipe 11 is connected to a radiation block 8 tightly adhered to the printed circuit board 5 and a CPU 6. Then, the gap between the printed circuit board 5, and keyboard 3, HDD 7, aluminum board 9 for ground and the case of a main body part 1 is surrounded with a heat insulator 10. The heat collected to the block 8 for radiation is conducted through the heat pipe 11 to the radiation board and radiated into the air. The radiation board is arranged inside the display part, the natural circulation of air is let occur by the chimney effect of upper exhaust port and lower inhalation port, and a cooling effect is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable device typified by a notebook computer, and more particularly, heat generated inside the device is transferred to the surface of the device case, and the temperature of the surface of the device case rises. The present invention relates to a notebook computer suitable for preventing heat generated in a portion where the body of the device user comes into contact with the surface of the device case for a long time from giving discomfort to the user.

[0002]

2. Description of the Related Art A conventional heat dissipation method will be described with reference to a sectional view of a notebook computer 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.

The heat generated by the CPU 6 inside the main body 1 is transmitted to the back surface of the keyboard 3 and the ground aluminum plate 9 through a 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.

A method for dissipating heat generated inside the notebook computer to the device case is described in “Electronic Technology January, 1997 Vol. 39 No. 1” published by Nikkan Kogyo Shimbun on December 1, 1996. Of the notebook PCs (P46-P49).

[0005]

A notebook computer intended for portable use sometimes has its device placed on a user's lap. In this case, heat generated inside the device may cause discomfort to the user of the device when the body of the device user is in contact with the surface of the device case for a long time, for example, when the temperature of the bottom of the device or the keyboard increases. Become.

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 the user of the device does not touch when using the device to radiate heat. Is to provide.

[0007]

Means for Solving the Problems Insulating between the heat generating portion inside the device and the device case with a heat insulating material and transferring the generated heat to a heat radiating plate provided on the back surface of the display portion using a heat pipe. And dissipates heat using the chimney effect of ventilation holes provided above and below the display unit case.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a notebook computer according to the present invention will be described below in detail with reference to the drawings.

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 brought into close contact with the printed board 5 and the CPU 6, and a heat pipe 11 is further connected to the heat radiating block.
The space between the D7, the ground aluminum plate 9, and the case of the main body 1 is 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 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, a power supply unit other than the printed circuit board 5 and the HD
The heat generated from D7 and the like can be collected by connecting the heat pipe 11 to the ground aluminum plate 9.

FIG. 2 shows a main unit 1 and a display unit 2 according to this embodiment.
FIG. 2 is a perspective view showing the structure of the connection part of FIG. 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 center axis of the hinge fitting 14, and the heat pipe 11 is passed from the main unit 1. Heat pipe 11
Is connected to a heat pipe connector 12 having flexibility.

FIG. 3 is a diagram showing the structure of the connected heat pipe assembly 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 unit 2.

FIG. 4 is an internal structural view showing a heat radiating portion 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.

FIG. 5 is a sectional view taken along the line AA 'of FIG.
Inside, there are an LCD unit 4, a heat insulating material 10, a heat pipe 11, and a radiator plate 13.
Each has an intake port 16 and an exhaust port 15. The heat generated in the main body 1 is transmitted through the heat pipe 11 and transmitted to the heat radiating plate 13. The LCD unit 4 includes:
Since it 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. In addition, the display unit 2 is used in a standing state at the time of use.
By providing 6, the natural convection of air occurs due to the chimney effect, so that the cooling effect of the radiator plate 13 can be improved.
Further, a heat insulating material 1 is provided between the case of the display unit 2 and the heat sink 13.
By adding 0, it is possible to suppress the temperature rise on the surface of the display unit case.

Here, the heat pipe 11 does not pass through the connecting portion between the main body 1 and the display unit 2 shown in FIG. A method of connecting to is also possible.

In the structure of the notebook computer thus configured, the 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 shielded by a heat insulating material. Thus, heat-sensitive components such as the HDD 7 in the device can be protected, and a rise in the temperature of the case surface of the main body 1 can be suppressed, thereby realizing a device that does not cause discomfort to the user due to heat generation. It is possible to

[0016]

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 downsizing of the device, and it may not be possible to cope with the increase in the amount of heat generated when the performance of the CPU or the like is increased. Has the effect of being able to perform 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 cross-sectional view showing the structure of a conventional notebook computer.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Laptop type computer main body, 2 ... Display part, 3 ... Keyboard, 4 ... LCD panel, 5 ... Printed circuit board, 6 ...
CPU, 7 HDD, 8 heat dissipation block, 9 aluminum ground plate, 10 heat insulating material, 11 heat pipe, 1
2 ... Heat pipe connection body, 13 ... Heat radiation plate, 14 ... Hinge fitting, 15 ... Exhaust port, 16 ... Intake port, 17 ... Connection fitting,
18: rubber layer, 19: metal mesh layer.

Claims (1)

[Claims] 1. A heat insulating material for shutting off a heat generating portion inside a device of a notebook type computer intended for carrying and an apparatus case, a heat radiating plate provided on a back surface of a display portion, and a heat generated inside the device. A heat pipe that transmits the heat to the heat sink, and ventilation holes provided above and below the display unit case, heat generated inside the device is transmitted to the heat radiation plate by the heat pipe, and the heat is transmitted from the ventilation hole to the heat radiation plate. A notebook computer characterized by dissipating the transmitted heat.