JP3317872B2 - Cooling structure of portable information processing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling structure of a portable information processing apparatus in which a main body and a display of the apparatus are rotatably mounted via a hinge, and in particular, a bottom side of the main body is opened and closed. The present invention relates to a cooling structure of a portable information processing device, which is configured to be able to efficiently cool the inside of a main body and to tilt the main body at an arbitrary angle.

[0002]

2. Description of the Related Art In a portable information processing apparatus, such as a notebook personal computer, in which a main body and a display are rotatably mounted via a hinge, main electronic components are mounted on the main body. It is necessary to efficiently radiate the heat generated from the electronic component from within the main body.

However, in recent years, the performance of portable information processing devices has been improved, and the amount of heat generated from electronic components built in the main body has increased, making it difficult to efficiently cool the electronic components. It has become to. In particular, in a notebook or laptop portable information processing device, a heating element is concentrated and built in the main body, and when the portable information processing device is installed on a desk or the like, heat is generated from the bottom of the main body. Since it becomes difficult to escape, the temperature of the bottom surface of the main body part rises.

Here, in a relatively large desktop personal computer or the like, cooling by natural convection alone is not sufficient, and cooling means by forced convection using a fan or the like is employed. However, in a foldable portable information processing device such as a laptop type or a notebook type, there are problems such as noise of a cooling fan, duration of a battery, and necessity of maintenance.
A fanless cooling method that does not use such a cooling fan is desired.

On the other hand, such a portable information processing apparatus has another problem that it is difficult for a user to operate the keys because the keyboard is installed horizontally on the upper surface of the main body.

Therefore, a portable information processing apparatus capable of dissipating heat without using a cooling fan, a structure in which a keyboard is tilted, or a structure in which a body is tilted by attaching a foot to a rear part of the body. Has been proposed.

For example, Japanese Patent Application Laid-Open No. 6-318124 discloses a main unit 1 of an apparatus as shown in FIGS. 7 (a) and 7 (b).
01 and the display unit 102 are rotatably mounted via hinges in a portable electronic device, in which the high heat generating elements are concentrated in one place in the main body 101, and these high heat elements are connected to the heat sink 103. Heat sink 1
An electronic device that dissipates heat from an exhaust port 104 opened above the substrate 03 has been proposed.

According to such an electronic device, the high heat generating element can be efficiently cooled via the heat sink.
It has been possible to achieve effective fanless cooling in laptop and notebook electronic devices.

Japanese Patent Application Laid-Open No. 7-319579 discloses an apparatus main body 201, an input section 202 having a keyboard, and a display section 203, as shown in FIG. A portable information processing device connected via a hinge has been proposed.

According to this portable information processing apparatus, the input section 202 can be tilted to an easy-to-operate angle, and the apparatus main body 201 can be floated to form a space on the bottom surface side. Air flow can be improved.

[0011]

However, in such a conventional device, first, the electronic device disclosed in Japanese Patent Application Laid-Open No. 6-318124 requires a built-in heat sink and a space for forming an exhaust port. However, there has been a problem that the size of the portable information processing apparatus is increased, and the degree of freedom in the mounting space and mounting layout of other components is limited by a heat sink and the like.

Further, in this electronic device, since the bottom surface of the main body remains in contact with a desk or the like on which the main body is installed, the conventional problem that the temperature of the bottom surface of the main body is easily increased still remains.

On the other hand, in the portable information processing apparatus disclosed in Japanese Patent Application Laid-Open No. 7-319579, since the main body can be lifted from the installation surface, the air flow on the bottom of the main body is improved, but the heat radiation capability from the main body itself is improved. However, there is a problem that the heat radiation effect is not so good.

The present invention has been proposed in order to solve such problems of the prior art, and does not require any special cooling means and does not increase the size of the apparatus, and therefore, the portable information processing apparatus is not required. It is an object of the present invention to provide a cooling structure of a portable information processing device that can efficiently cool a processing device and adjust a keyboard to an angle that is easy for a user to operate.

[0015]

SUMMARY OF THE INVENTION A portable information processing apparatus according to the present invention.
The cooling structure of the treatment device has a main body and a small number of bottom surfaces of the main body.
And a bottom portion that covers at least a part thereof, wherein the bottom portion is
The bottom is attached to the bottom of the main body so as to be openable and closable.
Heat generated inside the body when the face is open
At least a portion is formed between the main body portion and the bottom surface portion.
The heat is dissipated through the formed space.

[0016]

According to the cooling structure of the portable information processing device of the present invention having such a configuration, the portable information processing device
Can be efficiently cooled.

The portable information processing apparatus of the present invention has a main body
And a bottom portion covering at least a part of the bottom surface of the main body portion
Wherein the bottom portion is opened and closed with respect to a bottom surface of the main body portion.
Mounted when the bottom is open,
At least a part of the heat generated inside the main body is
Radiated through the space formed between the
It is characterized by being performed.

According to the portable information processing apparatus of the present invention having such a configuration, the portable information processing apparatus has a
The part can be efficiently cooled.

[0020]

[0021]

[0022]

[0023]

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a cooling structure for a portable information processing apparatus according to the present invention will be described below with reference to the drawings. FIG. 1 is an external perspective view illustrating a cooling structure of the portable information processing device according to the present embodiment. FIG. 2 is a side sectional view of the portable information processing apparatus shown in FIG. FIG. 3 is a rear sectional view of the portable information processing apparatus shown in FIG.

As shown in these figures, the portable information processing apparatus according to the present embodiment is a notebook type or laptop in which a main body 1 and a display 2 of the apparatus are rotatably mounted via a hinge 1a. 1 is a cooling structure of a portable information processing device such as a portable personal computer.

A keyboard 3 is attached to the main body 1 and, as shown in FIG. 2, main electronic components such as a board 7 and a heating element 8 are built in the main body 1. . On the other hand, a liquid crystal display device is attached to the display unit 2.

The bottom of the main body 1 is provided on the main body 1.
A bottom surface portion 4 that opens to the surface side is connected.

One end of the bottom 4 is rotatably mounted via a hinge 5 provided at the front end of the main body 1, and the substrate 7, the heating element 8, etc. built in the main body 1 are provided. And can be opened and closed separately. By opening and closing the bottom portion 4, heat radiation inside the main body 1 can be performed.

The hinge portion 5 of the present embodiment is attached such that the bottom portion 4 can be rotated with respect to the main body 1 and can be locked at an arbitrary angle. This allows
The main body 1 can be inclined at an arbitrary angle with respect to the bottom 4 so that the bottom of the main body 1 can be held in an open state, and the main body 1 can be adjusted and maintained at an angle desired by the user. This makes it easy for the user to perform operations such as key input.

Here, as the hinge portion 5 capable of rotating the bottom portion 4 with respect to the main body portion 1 and locking it at an arbitrary angle, for example, there is a hinge structure shown in FIG. 4 or FIG. .

The hinge portion 10 shown in FIG. 4 has a bolt 11 integrally penetrating the side surfaces of the main body portion 1 and the bottom portion 4, and is screwed to the bolt 11 from inside the bottom portion 4. It has a fixed nut 12 and a knob 13 that is screwed into the bolt 11 from outside the main body 1. By loosening the knob 13, the hinge 10 can be rotated, and by tightening the knob 13,
The main body 1 and the bottom 4 can be fixed at any angle.

On the other hand, the hinge section 20 shown in FIG. 5 is constituted by a tilt unit. This tilt unit is
A support shaft 21 integrally provided with a coil spring is supported by a wall 23 projecting from the bottom surface 4 via bolts 22, and torque is generated by the resistance of the coil spring of the support shaft 21 and the wall 23. It is supposed to. Thus, the support shaft 21 does not rotate unless a constant force is applied to the hinge portion, and the bottom surface portion 4 and the main body 1 can be locked at an arbitrary angle.

Further, a stopper 30 as shown in FIG. 6 can be provided as a means for keeping the bottom portion 4 and the main body 1 at an arbitrary angle. The stopper 30 has a leg 31 disposed on the back side of the main body 1, and the leg 31 is rotatably attached to the main body 1 via a rotation shaft 32 and protrudes toward the bottom surface 4. Thus, the distance between the bottom surface 4 and the main body 1 is maintained.

The rotating shaft 32 is formed integrally with the leg 31 and is supported by the tilt unit 33 on the main body 1 side. Thereby, the leg 3 of the stopper 30
In 1, the rotation shaft 32 does not rotate unless a certain force is applied, and the angle of the leg 31 is arbitrarily fixed. Thereby, the bottom surface 4 and the main body 1 can be locked at a desired angle by adjusting the leg 31.

The means shown in FIGS. 4 to 6 can be used alone, but the stopper 30 shown in FIG. 6 can be replaced with the screw-type hinge 10 shown in FIG. And the hinge unit 20 of the tilt unit type shown in FIG.

On the other hand, a heat sink 6 is disposed inside the main body 1. As shown in FIG. 2, the heat sink 6 is in contact with a heating element 8 built in the main body 1 via a heat conductor 9. Then, the heat sink 6, the present
Exposure to the outside of the main body 1 through an opening provided on the bottom of the body 1
When the bottom 4 is opened, the main body 1 tilts.
It is inclined, and a space is formed between the bottom of the main body 1 and the bottom 4.
And the heat sink 6 is exposed in this space
I have .

[0037] That is, the bottom surface portion 4 is opened, the heat sink 6 mounted towards the bottom of the main body 1, the main body portion
It is exposed to the space formed between the bottom surface 1 and the bottom surface portion 4 and comes into direct contact with the outside air. Then, an upward airflow (arrow in FIG. 1) is generated on the inclined bottom surface of the main body 1 to promote heat radiation from the heat sink 6.

Further, in the present embodiment, a gap 4a is provided on the back side of the bottom surface portion 4. Thereby, the main body 1
Without being tilted via the hinge part 5, this back side
When heat is radiated from the gap 4a and the main body 1 is inclined, the upward airflow from the main body 1 flows to the outside more efficiently.

Next, the operation of the cooling structure of the portable information processing apparatus of the present embodiment having such a configuration will be described. First, when operating the portable information processing apparatus, the main body 1 and the bottom 4 are rotated about the hinge 5 to open the bottom 4 (the state shown in FIG. 2). At this time, the main body 1 and the bottom surface 4 are held at a predetermined angle by the hinge 5.

In this state, by operating the portable information processing apparatus, the heating element 8 on the substrate 7 inside the main body 1 is formed.
Is transmitted to the heat sink 6 via the heat conductor 9. Next, the heat transmitted to the heat sink 6 warms the heat sink 6 and the air around the heat sink to generate an upward airflow. The upward air current rises along the heat sink 6 of the main body 1 that is inclined obliquely, and is finally completely discharged from the portable information processing device to the outside.

As described above, according to the cooling structure of the portable information processing device of the present embodiment, the bottom portion 4 of the portable information processing device is provided.
The heat transmitted to the portable information processing device is efficiently dissipated by the ascending air current generated by skewing the main body 1, whereby the portable information processing device can be efficiently cooled.

Further, since the heat radiation efficiency from the main body 1 is improved, it is possible to use a high-performance component having a high calorific value, so that the portable information processing apparatus can have higher performance.

Furthermore, since the keyboard has an appropriate angle by tilting the main body 1 obliquely, it is also easy to hit a key at the back, which has an effect that the user can easily perform key operations.

[0044]

As described above, according to the portable information processing apparatus cooling structure of the present invention, the portable information processing apparatus is efficiently cooled, and the keyboard is adjusted to an angle which is easy for the user to operate. be able to.

[Brief description of the drawings]

FIG. 1 is an external perspective view showing a cooling structure of a portable information processing device according to an embodiment of the present invention.

FIG. 2 is a side sectional view of the portable information processing apparatus shown in FIG.

FIG. 3 is a rear sectional view of the portable information processing apparatus shown in FIG. 1;

FIGS. 4A and 4B are diagrams showing one embodiment of a hinge portion in the cooling structure of the portable information processing apparatus according to the present invention, wherein FIG. 4A is a sectional front view of a main part, and FIG. .

FIG. 5 is a cross-sectional front view of a main part showing another embodiment of the hinge part in the cooling structure of the portable information processing device of the present invention.

6A and 6B are diagrams illustrating an embodiment of a stopper in a cooling structure of the portable information processing apparatus according to the present invention, wherein FIG. 6A is a cross-sectional side view of a main part, and FIG. .

FIG. 7 shows a conventional electronic device, (a) is an overall perspective view,
(B) is an enlarged perspective view of a heat sink.

FIG. 8 is an overall perspective view showing a conventional portable information processing apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body part 2 Display part 3 Keyboard 4 Bottom part 5 Hinge part 6 Heat sink 7 Substrate 8 Heating element 9 Heat conductor

Claims (20)

(57) [Claims] 1. A body having a heat radiating member and a bottom surface in thermal contact with an internal heating element, and a bottom surface, wherein the bottom surface is provided with an opening, and the opening is The bottom surface is closed by the heat dissipating member, and the bottom surface is attached to the bottom surface so as to be openable and closable. When the bottom surface is opened, a space between the surface closing the opening of the heat dissipating member and the bottom surface portion A cooling structure for a portable information processing apparatus, wherein a space is formed in the main body, and at least a part of heat generated inside the main body is radiated to the outside through the space. 2. A body having a heat dissipating member and a bottom surface that are in thermal contact with an internal heating element, and a bottom surface, wherein the bottom surface is provided with an opening, and the opening is the blocked by the radiation member, the bottom portion is openably mounted to the front Symbol bottom when the bottom portion is opened, the surface closes the opening of the heat radiating member and the said bottom portion A portable information processing device, wherein a space is formed therebetween, and at least a part of heat generated inside the main body is radiated to the outside through the space. 3. The portable information processing apparatus according to claim 2, further comprising holding means for keeping said bottom portion open. 4. The portable information processing apparatus according to claim 2, wherein said bottom surface portion is opened on a back side of a bottom surface of said main body portion. 5. The portable information processing device according to claim 4, wherein said main body has a keyboard. 6. The display device according to claim 5, further comprising a display unit rotatably attached to said main unit via a hinge.
The portable information processing apparatus according to claim 1. 7. A main body having a bottom surface and a heat radiating member that is in thermal contact with a built-in electronic component; a first position located on the bottom surface side of the main body;
A bottom portion that can be set at a second position farther from the bottom surface of the main body than the position of the body portion, and an opening is provided on the bottom surface, and the opening is provided by the heat dissipating member. When the bottom portion is set at the first position, the bottom portion covers a space formed below the bottom surface, and the bottom portion is set at the second position. A space is formed between the surface closing the opening of the heat dissipation member and the bottom surface, and at least a part of the heat generated by the electronic component is radiated to the outside through the space. A portable information processing device characterized by the above-mentioned. 8. The portable information processing apparatus according to claim 7, wherein the main body is inclined by setting the bottom surface at the second position. 9. The portable information processing apparatus according to claim 8, wherein said main body has a keyboard. 10. The apparatus according to claim 1, wherein the bottom portion is rotatably attached to the main body portion, and the bottom portion pivotally moves between the first position and the second position. The portable information processing device according to claim 7, wherein: 11. The portable information processing apparatus according to claim 10, wherein said bottom portion is attached to said main body via a hinge. 12. The portable information processing apparatus according to claim 7, further comprising a display unit rotatably attached to said main unit via a hinge. 13. The portable information processing apparatus according to claim 7, further comprising a support between said bottom portion and said main body portion for holding said bottom portion at said second position. . 14. A body having a heat dissipating member and a bottom surface in thermal contact with a built-in electronic component, and a bottom surface located on the bottom side of the body, wherein an opening is formed in the bottom surface. And the opening is closed by the heat dissipating member, and the bottom portion is below the bottom surface of the main body portion.
A second state in which a space formed by a surface that covers the opening of the heat dissipation member and the bottom surface is wider than the space in the first state. A portable information processing apparatus characterized in that the portable information processing apparatus can be held in the state of (1). 15. The body according to claim 14 , wherein the body is inclined when the bottom surface is in the second state.
The portable information processing apparatus according to claim 1. 16. The portable information processing apparatus according to claim 15, wherein said bottom surface portion is rotatable with respect to a bottom surface of said main body portion around a part of said main body portion as a fulcrum. 17. The portable information processing apparatus according to claim 15, wherein said main body has a keyboard. 18. claims, characterized in that it comprises a display unit pivotally mounted through a hinge to the body portion
18. The portable information processing device according to item 17 . 19. A body having a heat dissipating member and a bottom surface in thermal contact with an internal heating element, and a bottom surface, wherein the bottom surface has an opening, and the opening is the blocked by the radiation member, the bottom portion is openably mounted to the front Symbol bottom when the bottom portion is opened, the surface closes the opening of the heat radiating member and the said bottom portion An information processing apparatus, wherein a space is formed therebetween, and at least a part of heat generated inside the main body is radiated to the outside through the space. 20. A main body having a heat dissipating member and a bottom surface in thermal contact with a built-in electronic component; a first position located on the bottom surface side of the main body;
A bottom portion that can be set at a second position farther from the bottom surface of the main body than the position of the body portion, and an opening is provided on the bottom surface, and the opening is provided by the heat dissipating member. When the bottom portion is set at the first position, the bottom portion covers a space formed below the bottom surface, and the bottom portion is set at the second position. A space is formed between the surface closing the opening of the heat dissipation member and the bottom surface, and at least a part of the heat generated by the electronic component is radiated to the outside through the space. An information processing apparatus characterized by the above-mentioned.