JPH11316550A - Display device provided with air cleaning function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air cleaning function at low cost. SOLUTION: A metal net 21 is arranged attachably and detachably along the outer peripheral part of an electron tube, i.e., the inside of a chassis 3. The metal net 21 is grounded to the chassis 3 by an earth wire 25. Positive ions generated nearby an anode 11 are attracted by the metal net 21. Dust in air is imparted with positive electric charges by the positive ions, attracted by the metal net 21, and collected by an air filter 27 fitted to the surface of the metal net 21 on the opposite side from the outer peripheral surface of the electron tube 5. A motor 29a of a fan device 29 for forcible air discharge and suction is actuated as a television image receiver is powered ON to drive a fan 29b at a specific rotational frequency. As the fan device 29 is driven, the dust is removed in a device main body 1 and cleaned air is discharged in quantities to outside the device main body 1, so that air in the room as much as the discharged air is sucked in through a discharge hole different from the discharge hole 1b provided with the fan device 29.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device having an air purifying function, and more particularly to a cathode ray tube (electron tube) display device having an air purifying function.

[0002]

2. Description of the Related Art Conventionally, dust in the air is charged by ions (positive / negative ions) emitted from an electrode to which a positive / negative high voltage is applied, and has a polarity opposite to the high voltage. There is known an air purifying device configured to collect by another electrode to which a high voltage is applied.

[0003]

In the air purifying apparatus having the above-described structure, a high-voltage generating circuit and a high-voltage drive circuit, which is a related component thereof, are used as means for applying high voltages of opposite polarities to the respective electrodes. It is not low-priced because it has built-in.

[0004] On the other hand, general households and offices have various necessities such as television sets (television receivers) and various electric appliances such as audio sets, and various OAs represented by desktop personal computers (PCs).
Equipment is provided.

Therefore, it is not economical for the user to purchase an air purifying device in addition to these electric appliances and OA equipment, and there is a problem that a space for installing the air purifying device is required.

Accordingly, it is an object of the present invention to provide an inexpensive air purifying function.

[0007]

A display device with an air purifying function according to the present invention includes a conductive member charged to a polarity opposite to that of the dust for collecting dust in the air charged by an electron tube. .

According to the above configuration, the dust in the air is charged by the electron tube, and is collected by the conductive member charged in the opposite polarity to the dust. Therefore, in addition to the original function of the display device, it is possible to perform a function of removing dust in the air and purifying air in a room where the display device is installed, and the conductive member is provided in the display device. Since the dust accumulated in the inside of the display device can also be collected, the function of keeping the inside of the display device clean can be achieved.

In a preferred embodiment according to the present invention, a grounded wire mesh disposed on the outer periphery of the electron tube is used as the conductive member. This wire mesh is arranged along the inside of a chassis for mounting the electron tube.

[0010] An air filter is attached to a surface of the wire mesh facing the outer peripheral surface of the electron tube. An example of the air filter is a paper towel. By attaching the air filter in the above-described manner, dust in the air sucked by the wire mesh can be collected by the air filter before attaching to the wire mesh. For this reason, dust can be prevented from adhering to the wire mesh, and cleaning around the wire mesh is simple because it is only necessary to replace the air filter that has become dirty due to the dust with a clean air filter. In order to facilitate replacement of the air filter, it is desirable that the wire mesh is detachably attached to the electron tube or the chassis.

In the above-mentioned embodiment, the air in the apparatus main body is forcibly exhausted to the outside of the apparatus and the air outside the apparatus is forcibly sucked at an arbitrary position of the apparatus main body accommodating the electron tube, the wire mesh and the chassis. For example, a fan device is provided. By driving the forcible exhaust / suction means, a large amount of purified air from which dust is removed inside the apparatus is supplied to the room where the apparatus is installed, and a large amount of dirty air in the room is sucked into the apparatus. So that
Efficient air purification can be performed.

[0012]

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

FIG. 1 is a side sectional view showing the entire configuration of a television receiver as an example of a display device with an air purifying function according to one embodiment of the present invention, and FIG. 2 is a television shown in FIG. It is a front view of a receiver.

[0014] As shown in FIG.
The apparatus body 1, chassis 3, electron tube 5, electron tube control circuit 7, high voltage generation circuit 9, anode 11, cathode 13, grid 15, coating earth 17
And a high-voltage power supply line 19. The television receiver further includes a wire net 21 and a ground wire 2 in addition to the above components.
3, 25, an air filter 27, and a forced exhaust / suction fan device (fan device) 29.

As shown in FIG. 2, the apparatus main body 1 has a rectangular opening 1a on the front surface, and the surface (panel surface) of the electron tube 5 faces the opening 1a. The apparatus main body 1 has an exhaust port 1b at an upper rear surface for exhausting hot air in the apparatus main body 1.
And a fan device 29 having a motor 29a as a drive source is provided so as to face any one of the exhaust ports 1b.

The chassis 3 is formed of a metal material so that the cross-sectional shape of the chassis 3 when viewed from the side is substantially U-shaped. A high-voltage generating circuit 9 is provided at an upper portion, and an internal space of the chassis 3 is provided. An electron tube 5 and an electron tube control circuit 7 are mounted and fixed respectively.

The electron tube 5 has an anode 11 connected to the high-voltage generating circuit 9 through a high-voltage power supply line 19 on the upper side, and a coating grounded to the chassis 3 through an earth line 23 at a position corresponding to the lower anode 11. The cathode 13 and the grid 15 are respectively provided at portions where the ground 17 protrudes rearward of the rear surface.

A positive high voltage of about 1500 V is applied to the anode 11 from the high voltage generating circuit 9 through the high voltage feed line 19, so that the inside of the electron tube 5 becomes +1500 V
To a degree. By the application of the high voltage to the anode 11, positive ions generated in the vicinity of the anode 11 are attracted to the coating ground 17 side and also to the wire net 21 provided on the outer peripheral portion of the electron tube 5 as described later. Is done.

The cathode 13 and the grid 15 constitute an electron gun. The cathode 13 is heated by a built-in heater (not shown) and emits thermoelectrons.
On the other hand, the grid 15 applies a negative voltage to the cathode 13.
A control grid for controlling the amount of thermionic electrons emitted from the cathode 13 by varying the potential of the cathode 1;
3 includes a plurality of types of grids such as an acceleration grid that accelerates the movement of thermoelectrons emitted by applying a positive voltage.

The electron tube control circuit 7 includes the cathode 1 described above.
While controlling the driving of the heater (not shown) in 3,
It controls a negative voltage applied to the control grid, a positive voltage applied to the acceleration grid, and the like.

The wire net 21 is for collecting dust floating in the air in the apparatus main body 1 and is disposed along the outer peripheral portion of the electron tube 5, that is, along the inside of the chassis 3. It is grounded to the chassis 3 through a wire 25. In an example according to the present embodiment, as the wire net 21, a wire net that is detachably attached to the electron tube 5 or the chassis 3 is used. The wire net 21 is also grounded to the chassis 3 similarly to the coating ground 17. Therefore, positive ions generated near the anode 11 are attracted not only to the coating ground 17 but also to the wire net 21. At this time, if dust is drifting in the air in the apparatus main body 1, the dust is given a positive charge by the positive ions attracted to the wire net 21, and is attracted to the wire net 21 together with the positive ions. .

Further, an air filter 27 is attached to a surface of the wire net 21 on a side facing the outer peripheral surface of the electron tube 5.
In an example according to the present embodiment, as the air filter 27,
Paper towels are used. In the manner described above, the wire mesh 2
By providing a paper towel as the air filter 27 in 1, the dust moving toward the wire net 21 (that is, dust in the air given a positive charge by the positive ions) is collected by the paper towel. That is, the dust in the air sucked by the wire mesh 21 is
That is, it can be collected by the air filter 27 before it adheres to the air filter 1.

The motor 29a of the fan device 29 is activated at the same time when the power of the television receiver is turned on, drives the fan 29b at a predetermined rotation speed, and stops when the power is turned off. By driving the fan device 29, a large amount of air that has been cleaned by removing dust inside the device main body 1 is exhausted to the outside of the device main body 1, and an amount of room air corresponding to the exhaust is generated by the fan device 29. Discharge port 1b provided
Will be sucked from another outlet. That is, by driving the fan device 29, circulation (convection) occurs in the air in the room where the television receiver is installed.

In the above configuration, when a positive high voltage of about 1500 V is applied to the anode 11 from the high voltage generation circuit 9 by turning on the power of the television receiver,
Positive ions are generated near the anode 11. The positive ions are attracted to the coating earth 17 side in the electron tube 5 and the wire net 21 outside the electron tube 5. This wire mesh 2
Due to the positive ions attracted to the first side, a positive charge is given to the dust floating in the air in the apparatus main body 1, and the dust having the positive charge is applied to the outer peripheral portion of the electron tube 5 and the wire mesh 21. It will adhere to the air filter 27 (the paper towel) located between the inside and the inside. Fan device 2
7, a large amount of dirty air in the room is sucked into the apparatus main body 1 by the fan device 29, and the apparatus main body 1 is driven.
It is purified inside and exhausted indoors. Therefore, since a large amount of dirty air in the room is taken into the apparatus main body 1 by the fan device 29, dust in the air and particles in the smoke of cigarettes can be efficiently removed from the air. Become. In addition, when a television receiver is used, air purification is inevitably performed.

According to the above configuration, dust in the air in the apparatus main body 1 is given a positive charge by the electron tube 5 and
Is collected by the air filter 27 attached to the air conditioner. Therefore, in addition to the original function as a TV receiver,
It can also perform the function of purifying air by removing dust floating in the indoor air.

The outer peripheral side of the electron tube 5, that is, the wire mesh 2
Since the air filter 27 is provided inside the wire mesh 1, dust can be prevented from adhering to the wire mesh 21.
Cleaning of the vicinity of 1 is easy because it is sufficient to simply replace the air filter 27 that has become dirty due to the adhesion of dust with a clean air filter. Since the wire net 21 is configured to be detachable from the electron tube 5 or the chassis 3, the air filter 27 can be easily replaced.

Further, the main unit 1 is controlled by the fan unit 29.
A large amount of purified air from which dust has been removed inside is supplied to the room where the television receiver is installed, and a large amount of dirty air in the room is sucked into the device, which is efficient. Air purification can be performed.

It should be noted that the above-described contents are merely related to one embodiment of the present invention, and do not mean that the present invention is limited to only the above-described contents. For example, in the present embodiment, a paper towel is used as the air filter 27, but a material other than the paper towel may be used. In addition, wire mesh 21
Is not limited to the above. Further, in the present embodiment, the television receiver has been described as an example,
For example, it is of course easy to apply the present invention to a desktop personal computer.

[0029]

As described above, according to the present invention,
An inexpensive air purifying function can be provided.

[Brief description of the drawings]

FIG. 1 is a side cross-sectional view showing the entire configuration of a television receiver as an example of a display device with an air purifying function according to an embodiment of the present invention.

FIG. 2 is an exemplary front view of the television receiver shown in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Device main body 3 Chassis 5 Electron tube (CRT) 7 Electron tube control circuit (CRT control circuit) 9 High voltage generation circuit 11 Anode 13 Cathode 15 Grid 17 Coating ground 19 High voltage power supply line 21 Wire mesh 23, 25 Earth wire 27 Air filter (paper towel) 29) Forced exhaust / suction fan device (fan device)

Claims (5)

[Claims] 1. A display device with an air purifying function, comprising a conductive member charged to the opposite polarity to the dust for collecting dust in the air charged by an electron tube. 2. The display device with an air cleaning function according to claim 1, wherein the conductive member is arranged on an outer peripheral portion of the electron tube.
A display device with an air purifying function, which is a grounded wire mesh. 3. The display device with an air cleaning function according to claim 2, wherein the wire netting is arranged along an inside of a chassis for mounting the electron tube. 4. The display device with an air purifying function according to claim 2, wherein a surface of the wire mesh facing an outer peripheral surface of the electron tube is
A display device with an air purifying function, which is provided with an air filter. 5. The display device with an air purifying function according to claim 1, wherein the air inside the device main body is placed at an arbitrary position of the device main body that houses the electron tube, the wire netting, and the chassis. A display device with an air purifying function, comprising means for forcibly exhausting air to the outside of the device and forcibly sucking air outside the device.