JPH11121951A - Electronic equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently dissipate heat without consuming power. SOLUTION: For a portable electronic equipment wherein an LCD part case 3 where an LCD part 2 having a liquid crystal display element and a touch panel and its peripheral parts, etc., are housed is turnably attached to a system part case 1 where a power source and a printed circuit board, etc., are housed, such part of the system part case 1 as facing the LCD part case 3 is provided with an opening 1b, and when the LCD part case 3 is opened against the system part case 1, the heat in the system part case 1 is dissipated outside through the opening 1b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable electronic device such as a laptop computer and a notebook computer.

[0002]

2. Description of the Related Art A conventional technique of this kind is disclosed in
There is an electronic device disclosed in Japanese Patent Application Laid-Open No. 13974 and Japanese Patent Application Laid-Open No. 5-341874. Japanese Patent Laying-Open No. 5-13974 discloses that forced air cooling is performed using an electric fan. Further, Japanese Patent Application Laid-Open No. 5-341874 describes that cooling is performed by allowing outside air to flow naturally inside the device.

As a measure against heat radiation of conventional electronic devices, a slit is provided in a part of the housing or an opening is provided in a part of the housing so that outside air flows naturally inside the housing. A method of dissipating heat inside the body, a method of actively discharging heat inside the housing by providing a small fan, and a method of dissipating heat inside the housing, or mounting a heat pipe etc. on the heat source, A method of dissipating heat to a low temperature portion inside the housing has been performed.

FIG. 12 is a perspective view showing an appearance of a conventional electronic device, FIG. 13 is a perspective view including a partial cross section showing a main part inside the device shown in FIG. 12, and FIG. It is a perspective view which shows an example of a structure for heat dissipation measures, 50 is a main body housing, 51 is a touch panel, 52 is an input pen, 53 is a liquid crystal display element (henceforth LCD). An opening is formed in the upper surface of the main body housing 50, and a touch panel 51 is installed from the inside of the main body housing 50 so as to cover the opening.
CD53 is installed. In the main body housing 50, a power supply and a printed circuit board (hereinafter, referred to as PC) constituting a system unit for processing information and the like input by bringing the input pen 52 into contact with the touch panel 51 and outputting an image to the LCD 53 are provided.
B) are stored. In addition, there is a type in which a heat radiation slit 54 is provided on the side surface of the main body housing 50 as shown in FIG. 14A for heat radiation measures, and a heat radiation fan 55 is provided as shown in FIG. 14B.

[0005]

However, in the method of providing a slit or an opening in a part of the housing, the size of the outside air intake is limited by the recent adoption of a high-speed CPU and downsizing. However, convection hardly occurs in the housing, and the expected heat radiation effect cannot be obtained. Conversely, if the slits and / or openings are increased to increase the heat radiation effect, the size of the device itself increases, and portability is impaired.

In the method of mounting a small fan,
Since the power in the portable information processing device is further consumed by driving the fan, a battery-operated device cannot be expected to operate for a long time.

In the method of mounting the heat pipe,
Since the heat generated inside the housing is released to a relatively low temperature inside the housing, the heat radiation effect cannot be obtained as expected when the temperature inside the housing is saturated.

An object of the present invention is to solve such a problem and to provide an electronic device capable of more efficiently radiating heat without consuming power.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a system unit housing for accommodating a power supply, a printed circuit board, and the like. In a portable electronic device in which a housing is rotatably mounted, an opening is provided in a portion of the system unit housing facing the display unit housing, and the display unit housing is provided in the system unit housing. On the other hand, when opened, the heat in the system unit casing is released to the outside through the opening. With such a configuration, by opening the display unit housing, outside air can be positively taken into the system unit housing through the opening, and the ambient temperature and the outside air temperature in the system unit housing are substantially the same. Can be

The present invention is characterized in that a net for covering the opening is provided between the system unit casing and the display unit casing. With such a configuration, foreign matter is prevented from entering the system unit housing.

Further, the present invention is characterized in that the protection net is constituted by a conductive member. With such a configuration, heat can be radiated without radiating radio waves in the system unit housing to the outside.

Further, the present invention is characterized in that a means for lifting the printed circuit board is provided in conjunction with an operation of opening the display unit casing. With such a configuration, since both sides of the printed circuit board come into contact with the outside air, heat can be radiated on both sides of the printed circuit board.

Further, the present invention is characterized in that an angle of the display unit housing with respect to the system unit housing can be arbitrarily set. With such a configuration, the user can adjust the display housing to an easy-to-use angle.

Further, according to the present invention, there is provided a detecting means for detecting an angle of the display unit housing with respect to the system unit housing, and an adjusting means for adjusting the contrast of the display unit based on the detection angle of the detecting unit. It is characterized by having. With such a configuration, it is possible to prevent the display unit housing from being opened without permission when being carried.

[0015]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a perspective view showing the external appearance of an electronic apparatus according to a first embodiment of the present invention. Reference numeral 1 denotes a system unit housing in which a system unit including a power supply and a PCB is housed, and 2 denotes an LCD and a touch panel. Liquid crystal display (hereinafter referred to as LC
Reference numeral 3 denotes an LCD unit housing in which the LCD unit 2 and its peripheral components are stored. That is, in the electronic device of the first embodiment of the present invention, the system unit and the LCD unit of the conventional electronic device shown in FIG. Is rotatably mounted.

One end of both sides of the LCD housing 3 is provided with a support 3 for assembling with the system housing 1.
a extends, and a concave portion 1a in which the support portion 3a is positioned is formed at one corner of both side surfaces of the system unit housing 1. Then, the support portion 3a is rotatably attached to the system portion housing 1 by the support shaft 3b, so that L
The other end of the CD housing 3 can be moved up and down with respect to the system housing 1.

Further, an upper portion of the system housing 1, that is, a portion facing the LCD housing 3 is an opening 1b.
When the LCD unit housing 3 is opened, the power supply, the PCB, and the like inside the system unit housing 1 come into contact with the outside air.

With this configuration, the outside air can be positively taken into the system housing 1 by opening the LCD housing 3 and the ambient temperature in the system housing 1 and the outside air The temperatures can be approximately the same.
Furthermore, there is no power consumption for heat dissipation due to natural heat dissipation. In addition, since it is not necessary to provide a large slit in the housing in order to enhance the heat radiation effect, the portability when not used (when not divided) is not impaired without increasing the size of the apparatus main body.

FIG. 2 is a perspective view showing an external appearance of an electronic device according to a second embodiment of the present invention. Reference numeral 4 denotes a staggered mesh formed of a conductive member and large enough to prevent foreign matter from entering. Indicates a protection net. The same members as those of the first embodiment shown in FIG. 1 are denoted by the same reference numerals, and detailed description is omitted.

As shown in FIG. 2, the electronic device of the second embodiment is the same as the electronic device of the first embodiment.
A protective net 4 is provided between the
The space between the system unit case 1 and the LCD unit case 3 formed when the unit case 3 is opened is covered with a protection net 4. Here, since the mesh of the protection net 4 is staggered, the mesh of the protection net 4 is deformed in accordance with the opening and closing of the LCD housing 3, so that the protection net 4 moves up and down while covering the inside of the system housing 1. It does not hinder the opening and closing of the LCD housing 3.

With this configuration, the protection net 4 prevents foreign matter from entering the system housing 1 when the LCD housing 3 is opened. Further, by forming the protection net 4 by a conductive member,
Heat can be dissipated without radiating radio waves in the system housing 1 to the outside.

FIG. 3 is an internal side view showing a main part of an electronic device according to a third embodiment of the present invention.
Is shown. The same members as those of the first embodiment shown in FIG. 1 are denoted by the same reference numerals, and detailed description is omitted.

A support member 1c for supporting one end of the PCB 5 is provided at an end of the system housing 1 on the side supporting the LCD housing 3, and a support member 1c for supporting the LCD housing 3 is provided. A support member 1d for supporting the other end of the PCB 5 is provided at the opposite end. At this time, PCB5
Is rotatably supported by a support member 1c,
The other end of the PCB 5 can move up and down. An extension 3c extending downward when the LCD housing 3 is closed is provided on a surface of the LCD housing 3 facing the system housing 1. An elongated hole 3d is formed in the extension 3c. Further, a protrusion 5a is provided on a side portion of the PCB 5, and the protrusion 5a is
d is loosely fitted.

When the LCD housing 3 is opened, as shown in FIG. 4, the projection 5a engages with the end of the elongated hole 3d, so that the PCB 5 is interlocked with the LCD housing 3 and the LCD 5 is moved.
It is lifted to the part 2 side. Conversely, when the LCD unit housing 3 is closed, as shown in FIG. 3, the PCB 5 returns to the inside of the system unit housing 1, and the downward movement of a certain amount or more is restricted by the support member 1d.

With this configuration, when the LCD unit housing 3 is opened, both sides of the PCB 5 come into contact with the outside air, so that heat can be dissipated on both sides of the PCB 5.

FIG. 5 is an explanatory view showing a rotating state of the LCD unit housing in the electronic apparatus according to the fourth embodiment of the present invention. As shown in FIG. 5A, the inclination angle θ of the LCD unit casing 3 with respect to the system unit casing 1 can be set arbitrarily. FIG. 5B shows the case where θ = 0 °, and FIG.
When <θ <90 °, FIG. 5D shows the case where θ = 90 °, and the user can adjust the inclination angle θ to an easy-to-use angle.

FIG. 6 is an explanatory diagram showing a main part of an electronic device according to a fifth embodiment of the present invention. FIG. 7 is a block diagram showing control of the electronic device shown in FIG. A processor, 8 is a change detection device, 9 is a D / A converter, and 10 is a liquid crystal drive power supply.

The tilt sensor 6 includes the system unit housing 1 and the LCD
The angle with respect to the housing 3 is detected, and the detection result is output to the microprocessor 7 and the change detection device 8. Further, the change detecting device 8 outputs a signal to the microprocessor 7 when detecting a change of an angle equal to or more than a predetermined angle with respect to the reference angle. The microprocessor 7 includes a change detection device 8
When a signal is input from the LCD, the contrast data corresponding to the detection result from the tilt sensor 6 is called from the LCD contrast correction table and output to the D / A converter 9. The D / A converter 9 converts the contrast data, which is digital data, into analog data and sends it to the liquid crystal drive power supply 10. The liquid crystal drive power supply 10 supplies the LCD unit 2 with a drive power supply corresponding to the contrast data. The LCD unit 2 displays an image with a contrast corresponding to the tilt angle. After adjusting the contrast, the reference angle of the change detection device 8 is changed to the angle detected by the inclination sensor 6.

With this configuration, the angle of the LCD unit 2 is detected and the contrast of the LCD unit 2 is automatically adjusted. The unit 2 is always adjusted to the easy-to-see contrast.

FIG. 8 is an explanatory view showing a main part of an electronic device according to a sixth embodiment of the present invention. FIG. 9 is a front view of FIG.
e is a groove formed on the side surface of the end of the LCD unit housing 3 on the side that moves up and down, 11 is a switch slidably provided inside the groove 3e, and 12 is a substantially L-shaped attached to the switch 11. The lock claw 1e is provided at a position facing the lock claw 12 in the system unit housing 1, and the inside thereof has a substantially L-shaped lock hole, and 1f indicates an engagement portion formed by the lock hole 1e.

When the LCD housing 3 is closed and locked, as shown in FIG. 10, the lock claw 12 is locked with the lock hole 1e.
Inside, the L-shaped portion is engaged with the engaging portion 1f. The switch 11 also functions as a power switch of the electronic device main body, and the power is off when in the locked state. Then, when the power is turned on by sliding the switch 11, the engagement between the lock claw 12 and the engagement portion 1f is released, as shown in FIG. Switch 1
When the LCD unit housing 3 is lifted up with the slide 1 held, the lock claw 12 moves to the outside from the lock hole 1e, and the opening 1b is opened. Here, when the switch 11 is released, as shown in FIG.
Automatically slides off, but power remains on.

When the power is turned off, the LCD
When the housing 3 is closed, the slope portion of the lock claw 12 moves to the ON side by contacting the engagement portion 1f, but the switch 11 is turned off when the lock claw 12 is inserted into the lock hole 1e. The power is turned off by automatically sliding to the side.

With this configuration, the power switch is turned off when not in use, and the LCD housing 3 is locked at the same time. Therefore, the LCD housing 3 cannot be opened, so that the LCD housing 3 cannot be opened. The LCD unit housing 3 is prevented from being opened without permission.

[0035]

According to the present invention configured as described above, the opening is provided in a portion of the system housing facing the display housing, so that the opening is designed to be relatively large. As a result, the outside air can be positively taken into the housing, so that heat can be efficiently radiated. Also, there is no power consumption for heat dissipation due to natural heat dissipation. Moreover, since there is no slit or the like in the housing for improving the heat radiation effect, the portability when not in use can be maintained.

[Brief description of the drawings]

FIG. 1 is an exemplary perspective view illustrating an appearance of an electronic apparatus according to a first embodiment of the invention.

FIG. 2 is an exemplary perspective view illustrating an appearance of an electronic device according to a second embodiment of the invention.

FIG. 3 is an internal side view showing a main part configuration of an electronic device according to a third embodiment of the present invention.

FIG. 4 is a side view showing a state when an LCD unit housing is opened in the electronic device of FIG. 3;

FIG. 5 illustrates an LC in an electronic device according to a fourth embodiment of the present invention.
Explanatory drawing showing the rotating state of the D part housing.

FIG. 6 is an explanatory diagram showing a main configuration of an electronic device according to a fifth embodiment of the present invention.

FIG. 7 is a block diagram showing control of the electronic device of FIG. 6;

FIG. 8 is an explanatory diagram illustrating a main configuration of an electronic device according to a sixth embodiment of the invention.

FIG. 9 is a front view of FIG. 8;

FIG. 10 is an explanatory diagram showing a state in which an LCD unit in the electronic device of FIG. 8 is closed.

FIG. 11 is an explanatory diagram showing an operation when the LCD unit in the electronic device of FIG. 8 is opened from a closed state.

FIG. 12 is a perspective view showing the appearance of a conventional pen input device.

13 is a perspective view including a partial cross section showing a main part configuration inside the device shown in FIG.

14 is a perspective view showing an example of a configuration for heat dissipation measures in the device shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 System part housing | casing 1a recessed part 1b opening 1c, 1d Supporting member 1e Lock hole 1f Engaging part 2 Liquid crystal display part (LCD part) 3 LCD part housing 3a Supporting part 3b Supporting shaft 3c Extension part 3d Slot 3e Groove 4 Protection net 5 Printed circuit board (PCB) 5a Projection 6 Incline sensor 7 Microprocessor 8 Change detection device 9 D / A converter 10 Liquid crystal drive power supply 11 Switch 12 Lock claw

Claims (6)

[Claims] 1. A portable electronic device in which a display unit housing for storing a display unit and its peripheral parts is rotatably attached to a system unit housing for storing a power supply, a printed circuit board, and the like. An opening is provided in a portion of the system unit housing facing the display unit housing, and the system unit is opened via the opening when the display unit housing is opened with respect to the system unit housing. An electronic device characterized by discharging heat inside a housing to the outside. 2. The electronic device according to claim 1, wherein a protection net for covering the opening is provided between the system unit housing and the display unit housing. 3. The electronic device according to claim 2, wherein the protection net is formed of a conductive member. 4. The electronic device according to claim 1, further comprising means for lifting the printed circuit board in conjunction with an operation of opening the display unit housing. 5. The electronic apparatus according to claim 1, wherein an angle of the display unit housing with respect to the system unit housing can be arbitrarily set. 6. A detecting means for detecting an angle of the display unit housing with respect to the system unit housing, and an adjusting unit for adjusting contrast of the display unit based on a detection angle of the detecting unit. The electronic device according to claim 1, 2, 3, 4, or 5, wherein