JP2013186543A - Electronic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively cool the inside of a housing of an electronic device.SOLUTION: An electronic device includes: a housing having first and second openings; electronic device components accommodated in the housing; an electric fan accommodated in the housing and configured to cool the components by taking air from one of the first and second openings and exhausting air from the other; first and second lids configured to close the first and the second openings, respectively, in an openable manner; a temperature sensor configured to detect temperature inside the housing; an opening/closing sensors configured to detect opening/closing of the first and second openings; an alarm; and a controller. The controller activates the alarm when a temperature detected by the temperature sensor exceeds a predetermined temperature, and drives the electric fan when the opening/closing sensors detect that the first and second lids are open.

Description

  The present invention relates to an electronic device, and more particularly to a portable electronic device such as a mobile phone.

In recent years, portable electronic devices such as mobile phones have been advanced in functionality and size. However, as the packaging becomes denser, when used for a long time, the heat generated by electronic components such as integrated circuits (ICs) accumulates in the device, and it seems that the external surface of the device becomes hot. It has become.
On the other hand, a portable electronic device is known in which a blower fan is provided in a charger so that cooling air is sent into the device body by the blower fan when the charger is connected (see, for example, Patent Document 1).

JP 2006-163658 A

  However, what provided the ventilation fan in the charger had the problem that it acted only at the time of charge and it was difficult to cope with the temperature rise other than at the time of charge. The present invention has been made in view of such circumstances, and an electronic device is provided that is provided with a blower fan in the device body and can cool the inside of the device body as necessary, both during charging and when not charging. It is to provide.

  The present invention includes a housing having first and second openings, a component for an electronic device housed in the housing, and intake from one of the first and second openings housed in the housing and exhaust from the other. An electric fan that cools the components, first and second lids that releasably open the first and second openings, a temperature sensor that detects the temperature in the housing, and detection of opening and closing of the first and second openings An open / close sensor, an alarm device, and a control unit, wherein the control unit activates the alarm device when a temperature detected by the temperature sensor exceeds a predetermined temperature, and the open / close sensor includes first and second lids. The present invention provides an electronic apparatus that drives the electric fan when it is detected that the fan is opened.

According to this invention, since the electric fan is provided in the housing, the warning is given to open the opening of the housing when the temperature in the housing exceeds a predetermined temperature, and the electric fan is driven when the opening of the housing is opened. The temperature inside the housing can be properly maintained.
Moreover, even if it is a waterproof type with a sealed casing, the same effect can be obtained.

It is a perspective view which shows the mobile telephone of embodiment of this invention. It is a block diagram which shows the control circuit of the mobile telephone shown in FIG. It is sectional drawing which shows the internal structure of the mobile telephone shown in FIG. It is a flowchart which shows the cooling operation of the mobile phone shown in FIG. It is a flowchart which shows the telephone call operation | movement of the mobile phone shown in FIG.

  An electronic device according to the present invention includes a housing having first and second openings, a component for the electronic device housed in the housing, and intake air from one of the first and second openings housed in the housing. An electric fan that evacuates and cools the components, first and second lids that releasably close the first and second openings, a temperature sensor that detects the temperature in the housing, and first and second openings An opening / closing sensor for detecting opening / closing; an alarm device; and a control unit, wherein the control unit activates the alarm device when a temperature detected by the temperature sensor exceeds a predetermined temperature, and the opening / closing sensor includes first and first sensors. The electric fan is driven when it is detected that two lids are opened.

A first outlet for charging the battery and a second outlet for connecting the memory card are further provided in the housing, and the first and second outlets are respectively first and second when the first and second lids are opened. You may install in the said housing | casing so that it may be exposed to opening.
It is preferable that the alarm device includes a display panel, and displays an image to alarm when activated.
It is preferable that the housing and the first and second lids have a waterproof function.

Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings.
FIG. 1 is a perspective view showing a mobile phone according to an embodiment of the present invention.
As shown in FIG. 2A, the housing 2 of the main body 1 of the mobile phone includes a display unit 4 on the surface 3, a lid 25 on the right side, and a lid 23 on the lower side.

  Further, as shown in FIG. 2B, the housing 2 includes an imaging unit 6, a receiver unit 7, and a transmitter unit 8 on the back surface 5. The imaging unit 6, the receiving unit 7, and the transmitting unit 8 are each composed of a camera, a speaker, and a microphone.

  The display unit 4 includes a liquid crystal display panel, and includes an operation unit 9 including a touch panel on the surface thereof. The housing 2 has a waterproof function, and the display unit 4, the image pickup unit 6, the receiver unit 7, the transmitter unit 8, the operation unit 9, the lid 23, and the lid 25 are each configured to have a waterproof function. .

FIG. 2 is a block diagram showing a control circuit of the mobile phone shown in FIG.
As shown in the figure, the mobile phone includes an antenna 11, a wireless communication unit 12 that transmits and receives wireless signals via the antenna 11, a receiver (speaker) 7, a transmitter (microphone) 8, and a receiver 7. A voice processing unit 13 for outputting a voice signal to the voice transmission unit 8 and receiving a voice signal from the transmitter unit 8, a display unit (liquid crystal display panel) 4, a display control unit 14 for controlling display on the display unit 4, and an operation unit ( A touch panel) 9, an imaging unit (camera) 6, an image processing unit 17 that processes image data captured by the imaging unit 6, and a main control unit 15.
The main control unit 15 includes a microcomputer including a CPU, a ROM, and a RAM.

  Furthermore, the cellular phone includes open / close detection switches SW1 and SW2 as open / close sensors for detecting open / close of the lid 23 (FIG. 1) and the lid 25 (FIG. 1), and a temperature sensor 10 for detecting the temperature in the housing 2. An electric fan 16 for cooling the inside of the housing 2, a motor drive unit 18 for driving the electric fan 16, and a memory card outlet 19 for connecting a memory card for storing image data captured by the imaging unit 6. A battery 20 for driving the mobile phone and a power supply outlet 21 for connecting a power supply plug from an external power source to the battery 20 are provided.

FIG. 3 is a cross-sectional view showing the internal configuration of the mobile phone of the present invention.
As shown in the figure, the housing 2 includes a rectangular first opening 22 on the lower surface and a rectangular second opening 24 on the right side. The first and second openings 22 and 24 have lids 23 and 25, respectively. Is provided.

  One end of the lid 23 is supported by a hinge, and the user can open and close the first opening 22 in the direction of the arrow A. When the lid 23 is closed, the first opening 22 is waterproofed. Similarly, one end of the lid 25 is supported by a hinge, and the user can open and close the second opening 24 in the direction of arrow B, and the second opening 24 is waterproofed when closed.

  A printed wiring board PB is installed inside the housing 2. The printed wiring board PB includes a wireless communication unit 12, an audio processing unit 13, a display control unit 14, an image processing unit 17, and a motor driving unit shown in FIG. 18 and the main control unit 15, the temperature sensor 10, the open / close detection switches SW 1 and SW 2, the battery 20, the power supply outlet 21, the electric fan 16, the memory card outlet 19, and the like are mounted. Yes.

  As shown in FIG. 3, the electric fan 16 and the power supply outlet 21 are arranged so as to be exposed to the first opening 22 when the lid 23 is opened, and the open / close detection switch SW <b> 1 is opened when the lid 23 is closed. It arrange | positions in the position which can contact the lid | cover 23.

  Similarly, the memory card outlet 19 is disposed so as to be exposed at a part of the second opening 24 when the lid 25 is opened, and the open / close detection switch SW2 can contact the lid 25 when the lid 25 is closed. Placed in position. Moreover, the temperature sensor 10 is arrange | positioned in the position which can detect the internal temperature of the housing | casing 2 most efficiently on the printed wiring board PB.

Next, the cooling operation in the housing 2 of the mobile phone shown in FIGS. 1 to 3 will be described using the flowchart shown in FIG.
A command to turn on the power is input from the operation unit 9 (FIG. 1), and power is supplied from the battery 20 to each electronic component. When the detected temperature T of the temperature sensor 10 exceeds the reference temperature Ts (for example, 40 ° C.) in step S1 shown in FIG. 4, a warning message “Open the lid and exhaust heat” is displayed on the display unit 4 (step S1). S2). When the user opens the lids 23 and 25 to open the first and second openings 22 and 24, the open / close detection switches SW1 and SW2 detect “open” (step S3).

  Therefore, the display of “Please open the lid and exhaust heat” on the display unit 4 is switched to “Exhausting heat” (step S4), and at the same time, the driving of the electric fan 16 is started (step S5). Thereby, as shown in FIG. 3, cooling air flows in the direction of arrow C or D, and cooling in the housing 2 is started.

  Next, when neither of the lids 23 and 25 is closed and the open / close detection switches SW1 and SW2 detect “closed” (step S6), the cooling state is maintained. When the detected temperature T of the temperature sensor 10 becomes equal to or lower than the reference temperature Ts (step S7), the electric fan 16 is stopped (step S8), and the indication “exhausting heat” on the display unit 4 is “the lid is closed. "Please change" (step S9).

  When the lids 23 and 25 are closed and the open / close detection switches SW1 and SW2 both detect “closed” (step S10), the indication “Please close the lid” on the display unit 4 is erased (step S11), and the routine is stepped. Return to S1.

Further, when either the lid 23 or 25 is closed in step S6 and any of the open / close detection switches SW1 and SW2 detects “closed”, the electric fan 16 stops (step S12), and the routine proceeds to step S2. The warning message “Please open the lid and exhaust the heat” is displayed.
In this way, the internal temperature of the housing 2 is maintained at a safe appropriate temperature.

  Note that the flow of cooling air indicated by arrows C and D in FIG. 3 is determined by the rotation direction of the electric fan 16. When the whole electronic component in the housing 2 is cooled on average, the suction method in the direction of arrow D is preferable. Further, when particularly cooling a component such as a CPU that tends to rise in temperature, the blowing method in the direction of arrow C is preferable so that the component can be installed in the vicinity of the electric fan 16 and the cooling air can be directly blown.

Next, an example of a call operation of the mobile phone shown in FIGS. 1 to 3 will be described with reference to the flowchart shown in FIG.
As shown in FIG. 5, in step S21, the mobile phone waits for an incoming call. When an incoming call is notified to the user by a ringtone or a melody (step S22), the incoming information (name and phone number of the other party) is displayed on the display unit 4 (step S23).

  The user confirms the incoming call information displayed on the display unit 4. Then, a reception start operation is performed by the operation unit 9 (step S24).

  At the same time, the back surface 5 is brought close to the face so that the receiving unit 7 and the transmitting unit 8 correspond to the positions of the ear and mouth, respectively. When a call is made (step S25), the call is eventually ended and the user performs a call end operation with the operation unit 9 (step S26), the call is ended (step S27), and the routine returns to step S21.

  Next, in step S21, when transmitting without waiting for an incoming call, the operation unit 9 performs an operation to start transmitting (step S30). Thereby, the telephone number is displayed on the display unit 4 (step S31). The displayed telephone number is searched by the operation unit 9 and a desired number is determined (steps S32 and S33).

  As a result of the operation, a call operation to the other party is performed (step S34), and when an incoming call arrives (step S35), the routine proceeds to step S25, and call control is performed (step S25).

If no call is received by the other party in step S35, a call termination operation is performed using the touch panel 9 (step S36), the transmission operation is terminated, and the routine returns to step 21. In this way, a call operation is performed.
Further, imaging by the imaging unit (camera) 6 can be performed by instructing an imaging mode from the operation unit 9 and operating according to display contents displayed on the display unit 4.

DESCRIPTION OF SYMBOLS 1 Main body 2 Housing | casing 3 Front surface 4 Display part 5 Back surface 6 Imaging part 7 Reception part 8 Transmission part 9 Operation part 10 Temperature sensor 11 Antenna 12 Wireless communication part 13 Voice processing part 14 Display control part 15 Main control part 16 Electric fan 17 Image processing unit 18 Motor drive unit 19 Memory card outlet 20 Battery 21 Power supply outlet 22 First opening 23 Cover 24 Second opening 25 Cover S1 Open / close detection switch S2 Open / close detection switch PB Printed wiring board

Claims (4)

A housing having first and second openings, a component for an electronic device housed in the housing, and an air sucked from one of the first and second openings housed in the housing and exhausted from the other to cool the component An electric fan, first and second lids for releasably closing the first and second openings, a temperature sensor for detecting the temperature in the housing, and an open / close sensor for detecting opening and closing of the first and second openings, An alarm device and a control unit;
The control unit activates the alarm when a temperature detected by the temperature sensor exceeds a predetermined temperature, and drives the electric fan when the open / close sensor detects that the first and second lids are opened. Electronic equipment.   A first outlet for charging the battery and a second outlet for connecting the memory card are further provided in the housing, and the first and second outlets are respectively first and second when the first and second lids are opened. The electronic device according to claim 1, wherein the electronic device is installed in the housing so as to be exposed to the opening.   The electronic device according to claim 1, wherein the alarm device includes a display panel, and displays an image to alarm when activated.   The electronic device according to claim 1, wherein the housing and the first and second lids have a waterproof function.