JP2009020170A - Display apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display apparatus having an exhaust fan, in which dust or the like stuck to a display device is blown off with a simple constitution without deteriorating the radiation efficiency of the exhaust fan. <P>SOLUTION: The display apparatus 1 includes: the display device 11 arranged in a box unit 10 so that the display screen thereof may be exposed from the front surface of the box unit 10; the exhaust fan 12 arranged in the box unit 10; a first discharge port 13 which is arranged on the rear surface of the box unit and used for discharging an air current produced by the rotation of the exhaust fan 12; a shutter 14 capable of opening/closing the first discharge port 13; and a second discharge port 15 which is arranged on the upper front of the display 11, opened toward the lower part of the display 11 and communicated with the inside of the box unit 10. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a display device.

  In a display device having a display such as a television receiver, dust or the like is attached to the display during normal use, and it becomes difficult to see the screen unless it is regularly cleaned.

Therefore, a fan that blows off dust near the intake port of the exhaust fan is provided, and a fan other than the exhaust fan, such as a display device configured to prevent dust from adhering to the intake port (for example, see Patent Document 1). A method of blowing away dust and the like near the display can be considered.
Further, in a display device having a shutter that opens and closes the display screen of the display, an air nozzle that is moved integrally with the shutter is provided, and a display device that cleans by blowing air from the air nozzle toward the display screen when the shutter moves (for example, A technique such as that described in Patent Document 2) is also conceivable.
Further, a method such as a display device (for example, see Patent Document 3) configured to move the position of the cooling fan included in the display device to the front lower side of the display and blow the wind of the cooling fan on the display screen is also considered. It is done.
In addition, a display device configured to move the position of a jet outlet that blows out the wind of the cooling fan included in the display device to the upper front side of the display so as to blow the wind of the cooling fan on the display screen (for example, see Patent Document 4). Such a method is also conceivable.
JP 2002-9476 A JP 2000-19975 A Japanese Patent Laid-Open No. 3-208086 JP-A 62-54498

However, in the methods of Patent Documents 1 and 2, in addition to the exhaust fan, a fan and an air nozzle for blowing off dust and the like must be provided separately.
Further, although the method of Patent Document 3 does not require a separate fan or air nozzle for blowing off dust or the like, the position of the exhaust fan (cooling fan) is changed from the normal position (such as the rear side of the display) to the front side of the display. It must be changed downward, and there is a problem such as an arrangement space, and the arrangement efficiency of the exhaust fan is poor.
In the method of Patent Document 4, it is not necessary to separately provide a fan or an air nozzle for blowing off dust or the like. As a result, the heat dissipation efficiency of the exhaust fan decreases.

  An object of the present invention is to blow off dust and the like attached to a display with a simple configuration without reducing the heat dissipation efficiency of the exhaust fan in a display device having an exhaust fan.

In order to solve the above-mentioned problem, the invention described in claim 1
A display arranged in the casing so that the display screen is exposed from the front surface of the casing, an exhaust fan arranged in the casing, and the rotation of the exhaust fan provided on the rear side of the casing A display device comprising: a first exhaust port for discharging wind;
A shutter capable of opening and closing the first exhaust port;
A second exhaust port that is provided on the upper front side of the display, opens toward the lower side of the display, and communicates with the inside of the housing;
It is characterized by providing.

The invention described in claim 2
The display device according to claim 1,
A duct is provided for guiding wind generated by rotation of the exhaust fan to the second exhaust port.

The invention according to claim 3
The display device according to claim 1 or 2,
Time measuring means for measuring the time from when the first exhaust port is closed by the shutter;
Determining means for determining whether or not the time measured by the time measuring means exceeds a predetermined time;
A notification means for notifying that when it is determined that the determination means has exceeded,
It is characterized by providing.

The invention according to claim 4
A display arranged in the casing so that the display screen is exposed from the front surface of the casing, an exhaust fan arranged in the casing, and the rotation of the exhaust fan provided on the rear side of the casing A display device comprising: a first exhaust port for discharging wind;
A shutter capable of opening and closing the first exhaust port;
A second exhaust port that is provided on the upper front side of the display, opens toward the lower side of the display, and communicates with the inside of the housing;
A duct for guiding wind generated by rotation of the exhaust fan to the second exhaust port;
Time measuring means for measuring the time from when the first exhaust port is closed by the shutter;
Determining means for determining whether or not the time measured by the time measuring means exceeds a predetermined time;
A notification means for notifying that when it is determined that the determination means has exceeded,
It is characterized by providing.

According to the present invention, the display disposed in the casing so that the display screen is exposed from the front surface of the casing, the exhaust fan disposed in the casing, and the rotation of the exhaust fan provided on the rear surface side of the casing. In a display device comprising a first exhaust port for discharging the generated wind, a shutter capable of opening and closing the first exhaust port, provided on the upper front side of the display, opened toward the lower side of the display, and communicated with the inside of the housing A second exhaust port.
Therefore, when the shutter is closed, the wind generated by the rotation of the exhaust fan is discharged only from the second exhaust port and blown to the surface of the display, so that dust and the like adhering to the display can be blown off. When the shutter is opened, the wind generated by the rotation of the exhaust fan is also discharged from the first exhaust port, so that the heat dissipation efficiency of the exhaust fan can be maintained.
That is, dust and the like adhering to the display can be blown away with a simple configuration in which only the shutter and the second exhaust port are provided without reducing the heat dissipation efficiency of the exhaust fan.

  Hereinafter, the best mode of a display device according to the present invention will be described in detail with reference to the drawings. The scope of the invention is not limited to the illustrated example.

<Configuration of display device>
The configuration of the display device 1 of the present invention will be described with reference to FIGS.

  The display device 1 is a display device that includes a display 11, an exhaust fan 12, a first exhaust port 13 that exhausts air from the exhaust fan 12, and the like. Specifically, the display device 1 is, for example, a television receiver, a television receiver integrated with a DVD (Digital Versatile Disc) recorder, a television receiver integrated with a hard disk recorder, or the like. 11, an exhaust fan 12, and a first exhaust port 13 are not particularly limited.

  Here, let the surface which the display screen of the display 11 in the housing | casing 10 of the display apparatus 1 expose be a front surface (front surface), and let one side surface which opposes a front surface be a rear surface. In addition, the horizontal direction of the display 11 is the left-right direction, and the vertical direction of the display 11 is the vertical direction.

  The display device 1 includes, for example, as illustrated in FIGS. 1 to 3, a housing 10, a display 11 disposed in the housing 10 so that a display screen is exposed from the front surface of the housing 10, and the housing 10. An exhaust fan 12 disposed inside, a first exhaust port 13 provided on the rear surface side of the housing 10, a shutter 14 provided on the rear surface of the housing 10, and a front upper side of the display 11 in the housing 10. A second exhaust port 15 provided, a duct 16 disposed in the housing 10, a sensor 17 for detecting opening and closing of the shutter 14, and a time measuring unit 18 for measuring the time during which the shutter 14 is closed And a control unit 19 that controls the display device 1.

  The casing 10 has, for example, a substantially rectangular parallelepiped shape, and is configured by combining a front cabinet and a rear cabinet.

The display 11 is, for example, a liquid crystal display, a plasma display, a CRT (Cathode Ray Tube) display, or the like.
The display 11 performs a given display process according to a display signal input from the control unit 19, for example.

Specifically, for example, if the display device 1 is a television receiver integrated with a DVD recorder or a hard disk recorder, the display 11 is a video relating to content based on a television broadcast signal received by a tuner (not shown), Displays videos related to content recorded on DVDs and hard disks.
In addition, for example, when the display 11 determines that the time after the first exhaust port 13 is closed by the shutter 14 exceeds a predetermined time, as a notification unit, the display 11 notifies the fact.

The exhaust fan 12 is, for example, a fan that rotates to generate wind to discharge the air inside the display device 1 to the outside of the display device 1 in order to cool the inside of the display device 1. Sometimes called “cooling fan”.
The exhaust fan 12 is disposed, for example, in front of the first exhaust port 13 inside the housing 10.

The exhaust fan 12 is driven and rotated by, for example, an exhaust fan driving unit 12a.
The exhaust fan drive unit 12 a includes, for example, a motor and rotates the exhaust fan 12 in accordance with a control signal input from the control unit 19.

The first exhaust port 13 discharges, for example, wind generated by the rotation of the exhaust fan 12.
The 1st exhaust port 13 is arrange | positioned at the right side of the rear surface lower side of the housing | casing 10, for example. The first exhaust port 13 is formed, for example, by opening the housing 10 in a mesh shape.
The wind generated by the rotation of the exhaust fan 12 discharged from the first exhaust port 13 is blown out from the inside of the housing 10 to the outside in the front-rear direction.

For example, the shutter 14 opens and closes the first exhaust port 13.
The shutter 14 is, for example, a substantially rectangular flat plate. For example, the left and right end portions of the shutter 14 are locked at a position where the first exhaust port 13 can be opened and closed by a locking guide portion 14a. That is, for example, as shown in FIG. 1A and FIG. 2A, the shutter 14 moves upward to open the first exhaust port 13, and for example, FIG. 1B and FIG. As shown in b), the first exhaust port 14 is closed by moving downward.
The shape of the shutter 14 is not particularly limited as long as the first exhaust port 13 can be opened and closed, and may be a winding type, a folding type, an overslider type, or the like. Further, the shutter 14 may be locked so as to be movable left and right, for example, as long as the first exhaust port 13 can be opened and closed.

For example, the second exhaust port 15 communicates with the inside of the housing 10 and discharges wind generated by the rotation of the exhaust fan 12.
The 2nd exhaust port 15 is arrange | positioned along the upper end of the display 11, for example. Specifically, the upper end portion 10a of the housing 10 is separated from the upper end portion 11a of the display 11, and the front end of the upper end portion 10a of the housing 10 is covered so as to protrude forward from the front surface 11b of the display. The tip is extended downward. Therefore, a gap is formed between the upper end portion 10a of the housing 10 and the upper end portion 11a of the display 11, and the second exhaust port 15 is formed by this gap. The 2nd exhaust port 15 is formed in the length substantially the same as the length of the left-right direction of the display 11 toward the downward direction of the display 11, for example.
The wind generated by the rotation of the exhaust fan 12 discharged from the second exhaust port 15 is blown out along the surface of the display 11 from the inside of the housing 10 to the outside in the vertical direction. Thereby, dust etc. adhering to the display 11 can be blown away.

For example, the duct 16 guides wind generated by the rotation of the exhaust fan 12 to the second exhaust port 15.
For example, the duct 16 is disposed over the second exhaust port 15 from above the exhaust fan 12 on the inner surface of the housing 10. For example, the width (length in the left-right direction) of the duct 16 is formed so as to be substantially the same as the width of the first exhaust port 14 in a portion disposed inside the rear surface of the casing 10. In the portion disposed inside the upper surface, the second exhaust port 15 is arranged in the vicinity of the second exhaust port 15 so that the width is substantially the same as the width of the second exhaust port 15. 2 It is formed so as to gradually increase to the same width as the exhaust port 15.

The sensor 17 is, for example, a contact type sensor or the like, detects that the first exhaust port 13 is closed by the shutter 14, and outputs the detection signal to the control unit 19.
For example, as shown in FIGS. 1 and 2, the sensor 17 is located at a position where it can be detected that the first exhaust port 13 is closed by the shutter 14, for example, when the shutter 14 is closed. It is arranged in a part of.

For example, the timer 18 performs a given timing process according to a control signal input from the controller 19.
Specifically, the time measuring unit 18 measures the time from when the first exhaust port 13 is closed by the shutter 14 as, for example, time measuring means.

  For example, as shown in FIG. 3, the control unit 19 includes a CPU (Central Processing Unit) 191, a RAM (Random Access Memory) 192, a storage unit 193, and the like.

  For example, the CPU 191 performs various control operations in accordance with various processing programs for the display device 1 stored in the storage unit 193.

  The RAM 192 includes, for example, a program storage area for expanding a processing program executed by the CPU 191 and a data storage area for storing input data and a processing result generated when the processing program is executed.

  The storage unit 193 includes, for example, a system program that can be executed by the display device 1, various processing programs that can be executed by the system program, data that is used when these various processing programs are executed, and processing results that are arithmetically processed by the CPU 191. The data etc. are memorized. Note that the program is stored in the storage unit 193 in the form of a computer-readable program code.

  Specifically, for example, as illustrated in FIG. 3, the storage unit 193 stores a display control program 193a, a timing control program 193b, a determination program 193c, a notification control program 193d, and the like.

For example, the display control program 193a causes the CPU 191 to realize a function of displaying a predetermined video on the display 11.
Further, the display control program 193a causes the CPU 191 to realize a function of rotating the exhaust fan 12 by inputting a control signal to the exhaust fan drive unit 12a, for example.

For example, the timekeeping control program 193b causes the CPU 191 to realize a function of inputting a control signal to the timekeeping unit 18 and counting the time after the first exhaust port 13 is closed by the shutter 14.
Specifically, the CPU 191 measures the time from when input of the detection signal from the sensor 17 is started to when it is ended.

For example, the determination program 193c causes the CPU 191 to realize a function of determining whether or not the time measured by the time measuring unit 18 exceeds a predetermined time set in advance.
The CPU 191 functions as a determination unit by executing the determination program 193c.

For example, the notification control program 193d inputs a display signal to the display 11 when the CPU 191 that has executed the determination program 193d determines that the time counted by the time measuring unit 18 exceeds a predetermined time set in advance. The CPU 191 is made to realize a function for informing that effect.
Specifically, for example, the CPU 191 notifies the display 11 by displaying “Please open the shutter” or the like.

<Notification process>
Processing related to notification by the display device 1 of the present invention will be described with reference to the flowchart of FIG.

First, the CPU 191 determines whether or not the first exhaust port 13 is closed by the shutter 14 (step S1).
Specifically, the CPU 191 determines whether or not a detection signal is input from the sensor 17.

  If it is determined in step S1 that the first exhaust port 13 is not closed by the shutter 14 (step S1; No), that is, if it is determined that no detection signal is input from the sensor 17, the CPU 191 performs the process of step S1. Repeat this step.

  On the other hand, if it is determined in step S1 that the first exhaust port 13 is closed by the shutter 14 (step S1; Yes), that is, if it is determined that a detection signal is input from the sensor 17, the CPU 191 executes the time measurement control program 193b. Then, a control signal is input to the time measuring unit 18 to time it (step S2).

  Next, the CPU 191 executes the determination program 193c to determine whether or not the time measured by the time measuring unit 18 exceeds a predetermined time set in advance (step S3).

  If it is determined in step S3 that the time counted by the time measuring unit 18 does not exceed a predetermined time set in advance (step S3; No), the CPU 191 repeats the processes in and after step S2.

  On the other hand, if it is determined in step S3 that the time counted by the time measuring unit 18 exceeds a predetermined time set in advance (step S3; Yes), the CPU 191 executes the notification control program 193d to control the display 11. A signal is input to notify that the time from when the first exhaust port 13 is closed by the shutter 14 exceeds a preset predetermined time (step S4).

Next, the CPU 191 determines whether or not the first exhaust port 13 is opened by the shutter 14 (step S5).
Specifically, the CPU 191 determines whether or not the detection signal input from the sensor 17 is stopped.

  If it is determined in step S5 that the first exhaust port 13 is not opened by the shutter 14 (step S5; No), that is, if it is determined that the input of the detection signal from the sensor 17 is not stopped, the CPU 191 The processes after S4 are repeated.

On the other hand, if it is determined in step S5 that the first exhaust port 13 is opened by the shutter 14 (step S5; Yes), that is, if it is determined that the input of the detection signal from the sensor 17 is stopped, the CPU 191 performs this process. finish.
Then, the CPU 191 repeats the processes after step 1 again.

According to the display device 1 of the present invention described above, the display 11 disposed in the housing 10 so that the display screen is exposed from the front surface of the housing 10, and the exhaust fan 12 disposed in the housing 10. A first exhaust port 13 provided on the rear surface side of the housing 10 for discharging air generated by rotation of the exhaust fan 12, a shutter 14 capable of opening and closing the first exhaust port 13, and an upper front side of the display 11. And a second exhaust port 15 that opens downward from the display 11 and communicates with the inside of the housing 10.
Therefore, when the shutter 14 is closed, the wind generated by the rotation of the exhaust fan 12 is discharged only from the second exhaust port 15 and blown to the surface of the display 11, so that dust or the like adhering to the display 11 is removed. When the shutter 14 is opened, the wind generated by the rotation of the exhaust fan 12 is also discharged from the first exhaust port 13, so that the heat dissipation efficiency of the exhaust fan 12 can be maintained. .
That is, the heat dissipation efficiency of the exhaust fan 12 can be improved with a simple configuration in which only the shutter 14 and the second exhaust port 15 are provided without changing the position of the exhaust fan 12 at a normal position (such as the rear side of the display 11). Dust and the like attached to the display 11 can be blown out without being reduced.

  Further, according to the display device 1, since the duct 16 that guides the wind generated by the rotation of the exhaust fan 12 to the second exhaust port 15 is provided, the wind generated by the rotation of the exhaust fan 12 is transmitted to the second exhaust port. 15 can be efficiently led.

Further, according to the display device 1, it is determined whether or not the time measured by the time measured after the first exhaust port 13 is closed by the shutter 14 and the time measured by the time measured unit 18 exceeds a predetermined time. And a CPU 191 that executes the determination program 193c. When it is determined that the CPU 191 has executed the determination program 193c, the CPU 191 notifies the fact.
Therefore, although the heat dissipation efficiency of the exhaust fan 12 is reduced when the first exhaust port 13 is kept closed by the shutter 14, since the notification is made to avoid the state, the exhaust fan 12. It is possible to prevent a decrease in heat dissipation efficiency.

  The present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the gist thereof.

  Although the first exhaust port 13 is manually opened and closed by the shutter 14, an opening / closing means for automatically opening and closing the shutter 14 may be provided, and the first exhaust port 13 may be periodically opened at a predetermined timing.

  When it is determined that the time from when the first exhaust port 13 is closed by the shutter 14 exceeds a predetermined time, the notification means for notifying the fact is not limited to the display 11, for example, the display device 1 has. A speaker or the like (not shown) may be used.

It is side surface sectional drawing of the display apparatus of this invention. It is a rear view of the display apparatus of this invention. It is a block diagram which shows the functional structure of the display apparatus of this invention. It is a flowchart for demonstrating the process regarding the alerting | reporting by the display apparatus of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Display apparatus 10 Case 11 Display (notification means)
12 Exhaust fan 13 1st exhaust port 14 Shutter 15 2nd exhaust port 16 Duct 18 Time measuring part (time measuring means)
191 CPU (determination means)
193c Judgment program (judgment means)

Claims (4)

A display arranged in the casing so that the display screen is exposed from the front surface of the casing, an exhaust fan arranged in the casing, and the rotation of the exhaust fan provided on the rear side of the casing A display device comprising: a first exhaust port for discharging wind;
A shutter capable of opening and closing the first exhaust port;
A second exhaust port that is provided on the upper front side of the display, opens toward the lower side of the display, and communicates with the inside of the housing;
A display device comprising: The display device according to claim 1,
A display device comprising a duct for guiding wind generated by rotation of the exhaust fan to the second exhaust port. The display device according to claim 1 or 2,
Time measuring means for measuring the time from when the first exhaust port is closed by the shutter;
Determining means for determining whether or not the time measured by the time measuring means exceeds a predetermined time;
A notification means for notifying that when it is determined that the determination means has exceeded,
A display device comprising: A display arranged in the casing so that the display screen is exposed from the front surface of the casing, an exhaust fan arranged in the casing, and the rotation of the exhaust fan provided on the rear side of the casing A display device comprising: a first exhaust port for discharging wind;
A shutter capable of opening and closing the first exhaust port;
A second exhaust port that is provided on the upper front side of the display, opens toward the lower side of the display, and communicates with the inside of the housing;
A duct for guiding wind generated by rotation of the exhaust fan to the second exhaust port;
Time measuring means for measuring the time from when the first exhaust port is closed by the shutter;
Determining means for determining whether or not the time measured by the time measuring means exceeds a predetermined time;
A notification means for notifying that when it is determined that the determination means has exceeded,
A display device comprising:

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