JP3820861B2 - Electronics - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electronic apparatus such as an information processing apparatus, and more particularly to a cooling structure for cooling electronic components of an electronic apparatus such as a notebook personal computer (hereinafter referred to as a notebook personal computer).
[0002]
[Prior art]
In recent years, notebook computers have been widely used to improve operational efficiency, and various functions have been required. The printed circuit boards are highly integrated, and electronic components that generate large amounts of heat have high density. Has been implemented. In addition, the amount of heat generated due to an increase in power consumption due to an increase in CPU speed is increasing. Therefore, it is necessary to effectively cool such electronic components.
[0003]
FIG. 5 is a perspective view of a conventional notebook computer.
[0004]
As shown in this figure, in a conventional notebook computer, a keyboard 6 and a display 8 are accommodated in a housing 2. Although not shown, an electronic component such as a CPU is mounted on the printed wiring board inside the housing 2. A fan 12 is attached to the rear of the housing 2 to cool the electronic component. A tilt foot 14 is provided for adjusting the viewing angle of the display 8.
[0005]
A ventilation hole 4 is opened in front of the housing 2, and air is sent from the ventilation hole 4 into the housing 2, and the fan 12 is rotated to exhaust the air provided at the rear of the housing 2. Heat generated by electronic components such as a CPU is exhausted from the hole 10.
[0006]
[Problems to be solved by the invention]
However, in the conventional information processing apparatus, due to the reduction in size and weight of the apparatus, a sufficient space cannot be provided between the fan 12 and the electronic component. Therefore, in order to exhaust the heat generated by the electronic component. There was a problem that an efficient exhaust space could not be formed and ideal heat exhaust could not be performed.
[0007]
The present invention has been made in view of such a point, and an object of the present invention is to provide an electronic apparatus that can efficiently exhaust heat by increasing the exhaust space as compared with the prior art.
[0008]
[Means for Solving the Problems]
According to one aspect of the present invention, an electronic component, a housing that holds the electronic component, a tilt mechanism that is provided at a rear portion of the housing and tilts the housing, and a bottom surface of the housing And a heat radiation space forming portion that forms a heat radiation space for radiating heat from the electronic component when the tilt mechanism functions to tilt the housing. Equipment is provided.
[0009]
The tilt mechanism preferably has at least one ventilation port. Moreover, it is preferable that the said electric equipment further has a fan for heat dissipation. Furthermore, it is preferable that the operation clock of the electronic device is changed when the tilt mechanism tilts the housing.
[0010]
According to another aspect of the present invention, the electronic component, a housing that holds the electronic component, a tilt mechanism that is provided at a bottom portion of the housing and tilts the housing, the tilt An electronic device is provided, wherein the mechanism is a part of a bottom surface of the casing and has a ventilation port for cooling the electronic component.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Before describing the embodiment of the present invention, the principle will be described. FIG. 1 shows the principle of the present invention. As shown in this figure, an information processing apparatus having a printed wiring board 23 on which electronic components 25 for controlling a keyboard 22 and a display 24 for inputting characters and the like are mounted, and a casing 20 for supporting the printed wiring board 23. In an electronic apparatus such as the above, the first shaft 28 disposed in the horizontal direction supported by the rear portion of the housing 20 is rotated around the first shaft 28 and stored in the bottom of the housing 20 in a closed position. The tilt foot 26 as a tilt mechanism having the first exhaust hole 27 on the side surface, which supports the housing 20 at the closed position, the fan 30 disposed inside the tilt foot 26, and the tilt foot 26 in a closed position, And a second exhaust hole 21 provided at the bottom of the housing 20 located above the tilt foot 26.
[0012]
Since the invention is configured as described above, an electronic apparatus such as an information processing apparatus is used by being placed on a desk or the like, but the tilt foot 26 is rotated around the shaft 28 in the opposite direction to the clock, By standing, the tilt foot 26 is placed on a desk or the like while supporting the housing 20. In a state where the tilt foot 26 is raised, a large space is formed by the tilt foot 26, the bottom of the housing 20, the desk, and the like. When the electronic component 25 is operated in this state, heat is generated from the electronic component 25, and the heat is diffused from the exhaust hole 21 at the bottom of the housing 20. The fan 30 attached inside the tilt foot 26 rotates, and the heat exhausted into this space is exhausted to the outside through the first exhaust hole 27. Since this exhaust space can be made larger than the conventional one, the thermal exhaust efficiency is improved as compared with the conventional one.
[0013]
In addition, a protrusion 34 is provided on the tilt foot 26 and connected to a terminal 44 connected to the drive unit of the fan 30, a second shaft 39 supported by the housing 20, and a power supply unit 40 that supplies power supply voltage. The terminal 41 and the terminal 41 are attached, the tilt foot 26 is separated from the projection at a horizontal position, and the tilt foot 26 is rotated about the second shaft 39 by the pressing of the projection 34 at the position where the tilt foot 26 is upright. And a switch part 38 having a rotating part 37 with which the terminal 43 contacts.
[0014]
Thereby, in the state where the tilt foot 26 is raised, the terminal 44 and the terminal 41 are brought into contact with each other by the rotation of the rotation unit 37, and the power supply voltage is supplied from the power supply unit 40 to the drive unit of the fan 30. Then, the electronic component 25 is rotated and the heat generated by the electronic component 25 is exhausted to cool the electronic component 25. On the other hand, when the tilt foot 26 is closed, the terminal 41 and the terminal 43 are separated from each other, so that the fan 30 stops without being driven. Thus, battery consumption due to driving of the fan 30 is suppressed.
[0015]
The clock switching unit 45 outputs one of the first and second clock signals input to the first terminal and the second terminal to the electronic component 25 based on the control signal input to the third terminal. The terminal 43 connected to the third terminal, the second shaft 39 supported by the housing 20, the terminal 41 connected to the power supply unit 40 for supplying the power supply voltage, the terminal 41, and the tilt foot 26. Is separated from the protrusion 34 at a horizontal position, and the tilt foot 26 is rotated around the second shaft 39 by the pressing of the protrusion 34 at a vertical position, and the rotation part 37 in which the terminal 41 and the terminal 44 are in contact with each other. And a switch unit 38 having the above. Thus, when the tilt foot 26 is standing, the rotation of the rotation unit 37 causes the terminal 43 and the terminal 41 to come into contact with each other, and the potential of the control signal input to the third terminal of the clock switching unit 45 becomes the power supply voltage. For example, a high-speed first clock signal is output to the electronic component 25. Therefore, the electronic component 25 operates at high speed. The heat generated by the electronic component 25 is rotated by driving the fan 30 to exhaust heat from the exhaust hole 27. On the other hand, when the tilt foot 26 is closed, the terminal 41 and the terminal 44 are separated from each other, so that the control signal becomes equal to the ground voltage, for example, and the clock switching unit 45 sends the low-speed second clock signal to the electronic component 25. Output. For this reason, the electronic component 25 operates at a low speed, and battery consumption is suppressed.
[0016]
2A to 2C are views showing an information processing apparatus showing an example of an electronic apparatus according to an embodiment of the present invention. In particular, FIG. 2A is a perspective view, and FIG. 2B is a side view. Sectional drawing and the same figure (c) are back surface sectional views. As shown in this figure, the information processing apparatus includes a display 52 that rotates around a shaft 55 disposed in the back of the housing 50, a keyboard 54 that is supported by the housing 50 in a horizontal position, and the interior of the housing 50. A printed wiring board 60, a tilt foot 56, and a partition 65.
[0017]
A vent hole 53 is provided on the front surface of the housing 50. An electronic component 62 such as a CPU, a power supply unit 90, and a clock switching unit 92 are mounted on the printed wiring board 60 accommodated in the housing 50. A CPU or the like that generates a large amount of heat among the electronic components 62 is mounted above the tilt foot 56 at a position where the tilt foot 56 on the back surface of the printed wiring board 60 is closed.
[0018]
An exhaust hole 61 formed by a slit or the like is provided at the bottom of the housing 50 above the tilt foot 56 at a position where the tilt foot 56 is closed. The exhaust hole 61 is formed by a slit of plastic or sheet metal.
[0019]
An exhaust hole 57 formed by a slit or the like is provided on the side surface of the tilt foot 56. The tilt foot 50 rotates about 90 degrees around a shaft 58 supported by the housing 50. In order to keep the tilt foot 56 standing, a stopper 68 is provided at the back of the housing 50.
[0020]
The tip of the tilt foot 56 located in the back direction of the housing 50 is provided with a protrusion 66 that protrudes toward the back of the housing 50. A fan 64 is provided inside the tilt foot 56.
[0021]
A plurality of fans 64 may be provided, or the drive unit and the fan rotation unit may be arranged separately. In this example, a fan unit in which the drive unit and the fan are integrated is a tilt foot. 56 is provided near the center.
[0022]
A partition portion 65 that is fixed to the bottom portion of the tilt foot 56 and the side surface of the housing 50 that faces the bottom portion of the tilt foot 56 in a position where the tilt foot 56 is closed, and is foldable in a bellows shape having a spread in the left and right directions. Is accommodated in a gap between the housing 50 and the tilt foot 56.
[0023]
The partition portion 65 is provided at a position where the exhaust space formed by the tilt foot 56, the partition portion 65, and the housing 50 is optimal when the tilt foot 56 is raised. For example, vinyl or the like is folded. Housed in the bottom of the housing 50.
[0024]
Without the partitioning portion 65, when the tilt foot 56 is raised, an exhaust space is formed by the tilt foot 56, the desk, and the housing 50. In this exhaust space, heat escapes to the extra space and the fan 64. Therefore, it is conceivable that exhaust air cannot be exhausted sufficiently, so that the optimum mounting position of the partition portion 65 is determined in consideration of the driving capability of the fan 64 and the like.
[0025]
At the position where the tilt foot 56 is closed, it does not come into contact with the projection 66, but at the position where the tilt foot 56 is raised, it comes into contact with the projection 66, and the shaft 74 supported by the housing 50 is pressed by the projection 66. A switch unit 70 having a rotating unit 75 that rotates is provided.
[0026]
A spring 72 is wound around the shaft 74 and supported by a lower protrusion 76 and an upper protrusion 78. Moreover, the switch part 70 has the terminal 80 which consists of a conductor upwards. The terminal 80 is disposed so as to be separated from the terminal 88 supported by the housing 50 at a position where the tilt foot 56 is closed, and to contact at a position where the tilt foot 56 stands. A wire 82 is connected to the terminal 80, and the wire 82 is connected to the power supply unit 90.
[0027]
On the other hand, wires 84 and 86 are connected to the terminal 88. A clock switching unit 92 is connected to the wire 84, and a drive unit of the fan 64 is connected to the wire 86.
[0028]
Although not shown, the power supply unit 90 supplies a power supply voltage from an adapter for converting a battery or a commercial power supply housed on the back surface of the casing 50 to a DC voltage to the electronic component 62, the clock switching unit 92, and the drive unit of the fan 64. To do.
[0029]
Although not shown, the clock switching unit 92 receives a high-speed clock signal CLK1, for example, 100 MHz, and a low-speed clock signal CLK2, for example, 50 MHz, and a control signal for the power supply voltage or the ground voltage from the switch unit 70 from the clock generation circuit. If the potential of the control signal is the power supply voltage, the high-speed clock signal CLK1 is supplied to the electronic component 62, and if the potential is the ground potential, the low-speed clock signal CLK2 is supplied to the electronic component 62.
[0030]
3 and 4 are operation explanatory views of the information processing apparatus of FIG.
[0031]
Hereinafter, the operation of the information processing apparatus of FIG. 2 will be described with reference to these drawings.
[0032]
(A) Operation when the tilt foot 56 is stood up When the tilt foot 56 is used with the tilt foot 56 standing up, generally, an adapter is used and converted into a DC voltage by the adapter. It is supplied to the clock switching unit 92 and the like.
[0033]
The user rotates the tilt foot 56 in the direction opposite to the clockwise hand, so that the tilt foot 56 rotates around the shaft 58 and is supported by the stopper 68, and on a desk or the like at a substantially vertical position. Supported. Moreover, the partition part 65 opens in the shape of a bellows back and forth, and an optimal exhaust space is formed by the partition part 65, the tilt foot 56, and the back surface of the housing 50 as shown in FIG.
[0034]
At this time, the protrusion 68 of the tilt foot 58 rotates counterclockwise, contacts the protrusion 76 at the lower end of the switch 66, presses the switch 70, and rotates the switch 70 clockwise. Gives rotational force. The switch unit 70 is rotated clockwise around the shaft 74 by being provided with a clockwise rotational force by the protrusion 68.
[0035]
As shown in FIGS. 3A and 4, when the tilt foot 56 stands, the terminal 80 above the switch unit 70 contacts the terminal 88, and the power supply voltage is supplied to the terminal 88 from the power supply unit 92.
[0036]
The terminal 88 is connected to the drive unit of the fan 64 via a terminal for inputting a control signal of the clock switching unit 92 via the wire 84 and the wire 86. The potential of the control signal of the clock switching unit 92 becomes equal to the power supply voltage from the power supply unit 92, and the clock switching unit 92 supplies the high-speed clock signal CLK1 to the electronic component 62.
[0037]
Then, the CPU or the like operates with a high-speed clock signal CLK1. Further, a power supply voltage is supplied to the drive unit of the fan 64, and the fan 64 rotates. Heat generated when the electronic component 62 such as a CPU operates with the high-speed clock CLK1 is exhausted from the exhaust hole 61 on the bottom surface of the housing 50 to the exhaust space.
[0038]
The heat exhausted into the exhaust space is exhausted to the outside through the exhaust hole 57 on the side surface of the tilt foot 56 by the rotation of the fan 64, and the electronic component 62 is cooled. At this time, the exhaust space is optimally formed, and an electronic component such as a CPU that generates a large amount of heat is disposed near the exhaust hole 61, so that the heat generated by the electronic component 62 is efficiently exhausted.
[0039]
(B) Operation when the tilt foot 56 is closed When the tilt foot 56 is used in a closed state, for example, when used on the knee, a battery power source is often used without using an adapter. .
[0040]
When the tilt foot 56 is closed, the spring 72 returns to its original position by the elastic force of the spring 72, and the projection 66 of the tilt foot 56 is switched to the switch portion 70 as shown in FIGS. 2 (b) and 3 (b). Separate from. Therefore, the terminal 80 and the terminal 88 of the switch unit 70 are in a non-contact state.
[0041]
Therefore, the potentials of the wires 86 and 88 are equal to the round potential, the potential of the control signal of the clock switching unit 82 is equal to the ground potential, and the clock switching unit 82 transmits the low-speed clock signal CLK2 to the electronic component. 62.
[0042]
As a result, the CPU operates at a low speed, current consumption is suppressed, and heat generation is suppressed. For this reason, even when the user uses the information processing apparatus on the lap, the occurrence of low-temperature burns due to the heat exhausted by the user is also suppressed.
[0043]
Further, since the potential of the wire 88 is the ground potential, the fan 64 is not driven, and the battery is not consumed by driving the fan 64.
[0044]
According to the embodiment described above, when the tilt foot 56 is provided with the fan 64 and the tilt foot 56 is raised, the CPU is operated at high speed to create a sufficient exhaust space at the bottom of the housing 50, Since the fan 64 is driven to exhaust heat, the heat can be efficiently exhausted, and when the tilt foot 56 is closed, the CPU is operated at a low speed to suppress the generated heat. Even if the information processing apparatus is used above, the occurrence of low temperature burns can be suppressed.
[0045]
【The invention's effect】
As described above, according to the first to ninth aspects of the present invention, the tilt mechanism is provided, and when the tilt mechanism functions to tilt the housing, the heat dissipation space for radiating the heat from the electronic component is formed. Therefore, the exhaust efficiency of the heat generated by the electronic component is improved. According to the invention described in claim 10-16, since the tilt mechanism for tilting the casing is provided at the bottom of the casing and the ventilation mechanism for cooling the electronic components is provided in the tilt mechanism, the electronic components are generated. The exhaust efficiency of heat is improved.
[Brief description of the drawings]
FIG. 1 is a principle diagram of the present invention.
FIG. 2 is a diagram illustrating an information processing apparatus according to an embodiment of the present invention.
3 is an operation explanatory diagram of the information processing apparatus of FIG. 2;
4 is an operation explanatory diagram of the information processing apparatus of FIG. 2;
FIG. 5 is a perspective view of a conventional notebook computer.
[Explanation of symbols]
20 Housing 21 Second exhaust hole 22 Keyboard 24 Display 26 Tilt foot 27 First exhaust hole 28 First shaft 30 Fan 32 Partition part 34 Projection part 38 Switch part 39 Second shaft 40 Power supply part 45 Clock switching part

Claims (6)

A housing for holding electronic components;
A tilt mechanism provided at a rear portion of the casing, for tilting the casing;
A fan for heat dissipation,
A part of a bottom surface of the housing, and having a heat radiation space forming portion that forms a heat radiation space for radiating heat from the electronic component when the tilt mechanism functions to tilt the housing. And
The electronic device is characterized in that the fan is driven when the tilt mechanism functions to tilt the housing. A housing for holding electronic components;
A tilt mechanism provided at a rear portion of the casing, for tilting the casing;
A fan for heat dissipation,
A part of a bottom surface of the housing, and having a heat radiation space forming portion that forms a heat radiation space for radiating heat from the electronic component when the tilt mechanism functions to tilt the housing. And
An electronic device, wherein an operation clock of the electronic device is changed when the tilt mechanism tilts the housing. A housing for holding electronic components;
A tilt mechanism provided at the bottom of the housing, for tilting the housing;
And a fan for radiating heat,
The tilt mechanism is a part of the bottom surface of the electronic device, and further has a ventilation port for cooling the electronic component,
The electronic device is characterized in that the fan is driven when the tilt mechanism functions to tilt the housing. A housing for holding electronic components;
A tilt mechanism provided at the bottom of the housing, for tilting the housing;
A fan for heat dissipation,
The tilt mechanism is a part of the bottom surface of the electronic device, and further has a ventilation port for cooling the electronic component,
An electronic apparatus, wherein an operation clock speed of the electronic component is changed when the tilt mechanism functions to tilt the housing. Wherein the housing, the electronic device according to any one of claims 1 to 4, characterized in that an input unit of the electronic device. Wherein the housing, the electronic device according to any one of claims 1 to 5, characterized in that a display unit.

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