JPH11259181A - Electronic instrument having heat radiation structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic instrument having structure capable of transmitting heat generated from a body part to a display part and increasing a heat radiation effect without using a fan motor. SOLUTION: One end of a flexible heat radiation material 7 improved at its heat conductivity is held and stuck close to each other between an upper casing of a body part 1 and a CPU 6 to be a heat generation part loaded on a main circuit substrate 2 and the other end of the material 7 is brought into contact with a display part casing of a display part 3 so that the material 7 is brought into contact with the display part 3 or a metallic casing of the body part 1 over a wide range even in an optionally turned position state without interrupting the turning operation of the display part 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic apparatus having electronic parts such as a CPU that generates heat in a main body of a word processor or a portable computer.

[0002]

2. Description of the Related Art Conventionally, in an electronic device having a display unit accommodating a liquid crystal display device such as a word processor or a portable computer, a main circuit in which many electronic components such as a CPU that generate heat during operation are mounted. The board has a built-in board, and measures for heat dissipation are used to prevent the heat generated inside the main body of the electronic device from being heated, which may adversely affect the auxiliary memory device etc. that are built in the board. Has been taken.

FIG. 3 shows the structure of a computer in which conventional heat dissipation measures are taken. In the figure, reference numeral 11 denotes a main body of an electronic device, a main circuit board 13 on which a CPU 12 as a heat generating component is mounted, and a hard disk drive 14 as an auxiliary storage device.
Etc. are stored. Reference numeral 15 denotes a display unit which is rotatably attached to the main body unit 11 by a hinge unit 16 and in which the liquid crystal display device 17 is housed. The main circuit board 13 and the liquid crystal display 17 are connected to the main circuit board 13 by signal lines 18. A metal heat sink 19 is closely attached to the upper surface of the CPU 12 mounted on the main circuit board 13, and a cooling fan motor 20 is installed inside the main body 11. Thereby, the CPU 1
The heat generated during operation of the heat sink 2 and the like is dissipated to the outside of the main body 11 by heat dissipation from the heat sink 19 and forced convection by the fan motor 20, and electronic components such as a CPU that generate heat during operation are cooled. . In addition, since the temperature inside the main body 11 does not become high, the hard disk drive 14 and the like built in the main body 11 do not have an adverse effect such as malfunction.

[0004]

The above-described electronic equipment having the conventional heat dissipation structure requires a fan motor for heat dissipation, so that noise and power consumption increase.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an electronic apparatus having a structure capable of transmitting heat generated in a main body to a display section and increasing a heat radiation effect without using a fan motor. And

[0006]

SUMMARY OF THE INVENTION In order to solve this problem, the present invention relates to a heat radiation plate of a main body of an electronic device, wherein one end of a flexible heat conductive material is brought into contact with the heat radiation plate. The other end of the heat conductive material is brought into contact with the display unit, so that the heat conductive material contacts the display unit or the metal housing of the main unit in a wide range even at any rotational position without hindering the rotation operation of the display unit. It is what was constituted.

Thus, heat generated from a heat-generating component such as a CPU operating in the main body portion can be transmitted to the display portion and radiated from a large area of the display portion, so that a fan motor for radiating heat can be used. Instead, the effect of reducing the influence of heat generation on the functional units such as the auxiliary storage device can be obtained.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is directed to a main body for accommodating a main circuit board or the like on which semiconductor components including heat-generating components are mounted, and a display for accommodating a liquid crystal display device or the like. A hinge portion for rotatably attaching the display portion to the main body portion, wherein the display portion and the main body portion are connected to each other with a thin flexible heat conductive heat dissipation material. An electronic device having a heat dissipation structure, which has a function of smoothly and stably transferring heat by bringing a main body portion and a display portion into contact with a heat dissipation material in a wide range without obstructing opening and closing of a display portion.

According to a second aspect of the present invention, there is provided an electronic device having the heat radiation structure according to the first aspect, wherein the flexible heat radiation material is formed of a heat radiation rubber having enhanced thermal conductivity.
This has the effect that the main unit and the display unit can be stably contacted without hindering the opening and closing of the display unit.

According to a third aspect of the present invention, there is provided an electronic device having the heat radiation structure according to the first aspect, wherein the flexible heat radiation material is made of a metal having enhanced thermal conductivity. This has the effect that the body portion and the display portion can be stably brought into contact with each other without hindrance.

According to a fourth aspect of the present invention, there is provided an electronic device having the heat radiation structure according to the second or third aspect, wherein the flexible heat radiation material is formed into a sheet or a net having enhanced flexibility. In addition, there is an effect that the main body and the display unit can be stably contacted without hindering the opening and closing of the display unit.

According to a fifth aspect of the present invention, the display unit or the housing of the main body is made of a material having high heat conductivity such as metal and capable of dissipating heat, and is thermally conductive with the heat conductive material in contact therewith. It is characterized by the fact that members such as a heat pipe and a heat radiating plate are not required, the number of parts is reduced, and a heat radiating area and a heat radiating effect are enhanced.

Hereinafter, an embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIG. (Embodiment 1) FIG. 1 is a perspective view showing a portable computer which is an electronic device having a heat dissipation structure, in which a display unit and a main unit are slightly separated for convenience of explanation. FIG. 2 is a sectional view thereof. In the drawing, reference numeral 1 denotes a main body in which a main circuit board 2 on which semiconductor components and the like are mounted is housed, and 3 denotes a display unit which is rotatably attached to the main body 1 by a hinge part 4 and in which a liquid crystal display device 5 is housed. It is. The main body 1 includes an upper housing 1a and a lower housing 1b formed of a metal such as magnesium, and the upper housing 1a can receive heat generated when the CPU 6 mounted on the main circuit board 2 operates. Closely adhered to. The outer periphery of the display unit is also composed of a display unit housing 3a made of a metal such as magnesium. It is sandwiched and adhered between the body 1a and the CPU 6, which is a heat generating component mounted on the main circuit board 2,
The other end of the heat dissipating material 7 is in close contact with the display housing 3a of the display unit 3 with an adhesive 8 having thermal conductivity. As the heat radiation material, for example, a heat radiation rubber such as silicon rubber or a metal such as copper is used. Further, the heat dissipation material is formed in a thin sheet shape to enhance flexibility, or in a net shape to further enhance flexibility.

The operation of the electronic device configured as described above will be described below with reference to FIG. FIG. 2A shows a state in which the display unit 3 is open with respect to the main body unit 1, and FIG. 2B shows a state in which the display unit 3 is closed. Even when the display unit 3 rotatably attached to the main body 1 is rotated by the hinge unit 4 at any angle, the heat radiation material 7 is formed of a thin sheet-like highly flexible material. The body 1 and the housing, which is a heat dissipating member of the display unit 3, are stably contacted smoothly and in a wide range without hindering opening and closing of the display unit.

Thus, the CPU 6 generated in the main body 1
The heat generated during the operation is transmitted to the upper housing 1a via the heat radiation material 7. Further, the heat is transmitted from the heat radiation material 7 to the display housing 3a of the display unit 3. Since the display unit housing 3a is formed of a metal such as magnesium, the display unit 3 has a high heat dissipation effect, and can radiate heat over the entire area of the display unit 3, and the conventional heat dissipation structure using only the main body 1 is used. It is very effective compared to. In addition, since it is not necessary to use a fan motor in the main body to increase the heat radiation effect, noise and power consumption can be reduced.

In the above description, an example has been described in which the flexible heat conductive material is formed of heat radiation rubber such as silicon rubber, but any flexible heat conductive material may be used. Also, the flexible heat conductive material has been described as an example in the form of a sheet, but any material having a flexible shape may be used.

The upper housing 1a of the main body 1 and the display 3
Is made of metal such as magnesium.
Either one may be used as another heat dissipation material such as a metal plate, and the heat dissipation material 7 may be configured to be in contact therewith.

[0018]

As described above, according to the present invention, the heat dissipating members of the main body and the display unit are brought into contact with each other in a smooth and wide range without hindering the opening and closing of the display unit, and the transmission is performed stably. Heat can be released from the display unit. Furthermore, there is no need to use a fan motor for heat dissipation,
No noise is generated, the power consumption can be reduced, and the effect of reducing the influence of heat generation on functional units such as the auxiliary storage device can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view of a computer according to an embodiment of the present invention.

FIG. 2 is a sectional view of a computer according to an embodiment of the present invention;

FIG. 3 is a perspective view of a conventional computer with heat dissipation measures.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body part 1a Upper housing 2 Main circuit board 3 Liquid crystal part 3a Display housing 6 CPU 7 Heat dissipation material

Claims (6)

[Claims] 1. A main body for accommodating a main circuit board or the like on which a semiconductor component including a heat-generating component is mounted, a display for accommodating a liquid crystal display device and the like, and a display for rotatably mounting the display on the main body. An electronic device having a heat dissipation structure, characterized in that the display portion and the main body portion are connected to each other with a thin and flexible heat conductive heat dissipation material. 2. The electronic device having a heat radiating structure according to claim 1, wherein the heat radiating material having flexibility is a heat radiating rubber having enhanced thermal conductivity. 3. The electronic device having a heat radiating structure according to claim 2, wherein the heat radiating rubber having enhanced thermal conductivity is in the form of a sheet or a net having enhanced flexibility. 4. The electronic device having a heat radiating structure according to claim 1, wherein the flexible heat radiating material is a metal having enhanced thermal conductivity. 5. The electronic device having a heat dissipation structure according to claim 4, wherein the metal having enhanced thermal conductivity is a sheet or net having enhanced flexibility. 6. The display unit or the housing of the main body is formed of a material having high heat conductivity such as metal and capable of dissipating heat, and is capable of conducting heat with a heat conductive material in contact therewith. An electronic device having the heat dissipation structure according to claim 1.