KR100492438B1 - Flat display and tv interphone system using the same - Google Patents

Abstract

Since flat displays using flat display modules must have additional boards for mounting image, audio, and control signal processing circuits in addition to the display drive circuit boards coupled to the flat display module, the additional boards must be provided under the display drive circuit board. The distance between them should be maintained. In such a case, care must be taken to ensure that the tall components are mounted in positions on the additional board so as not to interfere with the display drive circuit board. As a result, the appearance design of the display is inevitably made thicker and wider. The present invention provides a flat display using a flat display module, wherein the flat display module includes a flat cathode ray tube, a deflection yoke, and a display driving circuit board, and the display driving circuit board is a method of holding a part of the deflection yoke. And a space having a depth of several mm to several tens of mm is provided below the display driving circuit board. This reduces the thickness and narrows the appearance of the display. In addition, by using the flat display as the mother set of the TV interphone system, the appearance design of the mother set having the narrow width can be realized.

Description

FLAT DISPLAY AND TV INTERPHONE SYSTEM USING THE SAME}

The present invention relates to a flat display using a flat cathode ray tube and a TV interphone system using the flat display.

The flat display according to the present invention and the TV interphone system using the flat display improve space coefficient by providing a space under the driving circuit board for driving the flat cathode ray tube and including various components used for display in the space. The purpose is to

Flat display modules that have been used for prior art flat displays generally have the configuration shown in FIG. As shown in Fig. 1, a frame FL molded into a rectangular shape from a plastic or metal material is provided as a housing for a flat display module; A display drive circuit board DC which collectively mounts the flat cathode ray tube CT with the deflection yoke DY, the drive circuit for the cathode ray tube, and the image signal processing circuit is disposed on the frame FL. A flat display using a flat display module having such a configuration has a function of receiving power and video signals from an external power source and displaying images according to the video signals, and is most applied to a TV interphone system.

2 shows the overall configuration of a TV intercom system. The TV intercom system consists of a mother set MS and a child set CS.

The mother set MS consists of a monitor TV unit MO consisting of a flat display using a flat display module and a dialogue unit CM using a handset as an input / output. The mother set MS is placed indoors.

The child set CS has a TV camera CA and an interphone IH, and is generally arranged at the porch of the house. The mother set MS is connected to the child set CS via the communication line LN, allowing the user to make a call while viewing a video of a person in the outdoor or home porch. In summary, the child set CS is an interphone device with a TV camera, and the mother set MS is a monitoring device for monitoring the voice and video of the visitor captured by the child set.

The child set CS installed in the rectangular housing allows the visitor to talk to the user on the mother set MS using the speaker and miprophone of the interphone unit IH disposed in front of the housing. The child set CS has a camera unit CA on the interphone unit IH for capturing and storing images of outdoor scenery and visitors. The video signal captured by the camera unit CA and the audio signal captured by the interphone unit IH are transmitted directly to the mother set MS via the communication line LN, or frequency-modulated under the influence of frequency-multiplexing. The signal is converted into a signal and transmitted to the mother set MS via the communication line LN. On the other hand, the mother set MS transmits an audio signal using the hand set of the dialogue unit CM arranged on the mother set MS side. In this case, as with the child set CS, the speech signal is transmitted directly to the child set CS or converted into a frequency-modulated signal and transmitted to the child set CS. The mutual transmission of voice signals enables a conversation between a user on the mother set MS side and a visitor on the child set CS side. In addition, the mother set MS having the monitor TV unit MO on the front side allows the user of the mother set MS side to receive a video signal from the child set CS and to talk with the visitor while viewing the visitor's image displayed on the monitor TV unit MO. Do it.

In this way, a display using a flat display module must have an additional substrate for mounting circuitry for image, audio, and control signal processing in addition to the display drive circuit board coupled to the flat display module. Such additional substrates are generally disposed in spaces formed below flat display modules. In this case, care must be taken to ensure that the tall components are mounted in locations that do not interfere with the flat display module on the additional substrate. Several methods of placing a substrate on a flat display module have been proposed.

For example, Japanese Patent Laid-Open No. Hei 63-135076 proposes a method of arranging a substrate for mounting electronic components on a flat rear surface of a flat cathode ray tube facing a fluorescent screen. In addition, a method of erecting an additional substrate perpendicular to the side of the flat display module is proposed to suppress the expansion of the entire substrate.

In most cases, however, the design of the appearance of the display results in increasing the thickness or width of the display. Flat displays using flat display modules may also face this problem in the design of the mother set of TV interphone systems in which the most commonly used applications are now.

It is an object of the present invention to provide a flat display using a flat display module capable of realizing an appearance design having a thinner thickness and a narrower width, and a TV intercom system using the flat display.

To achieve the above object, according to the present invention, there is provided a flat display using a flat display module comprising a flat cathode, a deflection yoke, and a display drive circuit board, wherein the display drive circuit board holds a portion of the deflection yoke. And a space having a depth of several mm to several tens of mm is provided below the display driving circuit board.

By using the flat display having the above configuration as the mother set of the TV interphone system, the mother set can be realized in an appearance design having a thinner thickness and a narrower width.

In addition, by effectively using the flat display having the above configuration, it is possible to design a display system which is better in space-saving than the display system of the prior art. That is, it is possible to provide a display system having a new appearance design and a compact structure at low cost as compared to the display system of the prior art. In particular, flat displays having the above construction are most effectively applied to TV interphone systems oriented for space-saving and thin structure.

3A and 3B are views showing the configuration of a flat display module according to the present invention used for a flat display and a TV intercom system using the same. FIG. 3A is a front view of the flat display module, and FIG. 3B is a side view thereof.

3A and 3B, the symbol FL represents a frame of a flat display module, DY is a deflection yoke, CT is a flat cathode ray tube, and DC is a display drive circuit board.

The flat display module is composed of a frame as a housing, a flat cathode ray tube with a deflection yoke, and a display drive circuit board.

The frame FL is molded into a rectangular shape from a plastic or metal material, which is used as the housing of the flat display module. On the frame FL, a flat cathode ray tube CT equipped with the deflection yoke DY, that is, an image device, and a display drive circuit board DC which collectively mounts a circuit for driving the image device and an image signal processing circuit are disposed.

The flat display module having such a configuration has a function of receiving power and an image signal from an external power source and displaying an image based on the image signal.

As shown by the hatch rider of FIG. 3A, the display drive circuit board interferes with the flat cathode ray tube and deflection yoke when mounted in a state in which the display drive circuit board DC is lifted to a degree of space thereunder. Part of the DC is cut into trapezoidal shapes. Therefore, in the flat display module of the present invention, the display driving circuit board DC can be arranged in a state of holding a part of the deflection yoke on the concave portion of the trapezoid. More specifically, as shown in FIG. 3B, the display driving circuit board DC may be arranged in a manner of floating from several millimeters to several tens of millimeters from the bottom surface of the frame, thereby allowing the space SP to display the display driving circuit board DC. It can be secured at the bottom of the.

4 illustrates an embodiment of a flat display suitable for a TV intercom system to which the flat display module of the present invention is applied.

Referring to Figure 4, an additional circuit board DCA is disposed on the bottom surface of the frame, which is the housing of the display, and the display drive circuit board DC is disposed on the additional circuit board DCA. In this figure, the symbol a represents an area surrounded by a dotted line, in which the space under the display driving circuit board of the flat display module is effectively utilized.

FIG. 5 is an enlarged view of the region a shown in FIG. 4. As shown in FIG. 5, the components are arranged on an additional circuit board of the display, more specifically in the lower space at the tip of the flat cathode ray tube. In the embodiment shown in FIG. 5, the display drive circuit board DC of the flat display module is arranged to float a sufficient distance from the bottom surface of the frame FL, and the insulation sheet IS is disposed directly below the display drive circuit board DC. The space under the insulating sheet IS ensures a distance of, for example, 3 mm or more from the lower surface of the frame FL. The additional circuit board DCA is arranged in the space under the insulating sheet IS. In prior art flat displays, there is no space underneath the flat display drive circuit board, so that components cannot be mounted on this part of the additional circuit board equivalent to the space.

On the contrary, according to the flat display module of the present invention, since sufficient space is secured under the display driving circuit board as shown by the area a surrounded by the dotted lines, many components of low height utilize this space for additional circuitry. It can be mounted on a substrate. In addition, since the insulating sheet IS is disposed directly under the display driving circuit board, the components mounted on the additional circuit board are not shorted with the components on the display driving circuit board DC side. As a result, many components that have been mounted on the additional circuit board DCA in a manner that does not interfere with the display drive circuit board DC can be effectively mounted on the additional circuit board.

In this way, according to the present invention, it is possible to design a display which is superior in space-saving compared to the prior art. In addition, by using such a space-saving display, a display system having a new appearance design and a compact structure as compared with the display system of the prior art can be provided. In particular, the flat panel display of the present invention is most suitable and important for TV interphone systems oriented for space-saving and thin structure.

While the preferred embodiment of the present invention has been described using specific terms, such description is for illustrative purposes only and it will be understood that various changes and modifications may be made without departing from the spirit and scope of the following claims.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

1 shows a prior art flat display.

2 is a diagram showing the overall configuration of a TV intercom system.

3a and 3b are views showing the configuration of a flat display module according to the present invention.

4 is a view showing an embodiment of a display to which the flat display module according to the present invention is applied.

FIG. 5 is an enlarged view of a region shown in FIG. 4; FIG.

<Description of the symbols for the main parts of the drawings>

FL: Frame

CT: cathode ray tube

DY: deflection yoke

DC: Display Drive Circuit Board

SP: Space

DCA: Additional Circuit Boards

IS: Insulation Sheet

Claims (6)

In the flat display using the flat display module, The flat display module is: A frame used as a housing of the flat display module; Flat cathode ray tube with deflection yoke; And Display driving circuit board for driving the flat cathode ray tube Including, By arranging the display driving circuit board so as to float from the frame under the cathode ray tube while holding a part of the deflection yoke, a space of several mm to several tens of mm is provided between the display driving circuit board and the bottom of the lower frame. Flat display, characterized in that the installation is thinner. In the flat display using the flat display module, The flat display module is: A frame used as a housing of the flat display module; Flat cathode ray tube with deflection yoke; And Display driving circuit board for driving the flat cathode ray tube Including, A frame at a lower portion of the cathode ray tube in a state in which a cutout portion is provided in the display driving circuit board to allow a portion of the deflection yoke to be placed therein to hold the display driving circuit board in a portion holding the deflection yoke. And a space of several mm to several tens of mm is provided between the display driving circuit board and the bottom surface of the lower frame to reduce the thickness of the device. The method of claim 2, And a cutout portion of the display driving circuit board, which is configured to allow a portion of the deflection yoke to be placed therein, in a trapezoidal shape. In a TV intercom system, A child set arranged outdoors or at the porch of a house and having an interphone function and a TV camera; And Mother set disposed indoors-The mother set receives the voice information and video information transmitted from the child set and allows the user of the mother set to talk to the person while watching the image of the child side, Mother set has a monitor TV unit that uses a flat panel display- Including; The flat display is: A frame used as a housing of the flat display; Flat cathode ray tube with deflection yoke; And Display driving circuit board for driving the flat cathode ray tube Including, By arranging the display driving circuit board so as to float from the frame under the cathode ray tube while holding a part of the deflection yoke, a space of several mm to several tens of mm is provided between the display driving circuit board and the bottom of the lower frame. To reduce the thickness of the device; And the components are arranged in the space below the display driving circuit board of the flat panel display. In a TV intercom system, A child set arranged outdoors or at the porch of a house and having an interphone function and a TV camera; And Mother set disposed in the room-The mother set receives the audio signal and the video signal transmitted from the child set and allows the user of the mother set to talk to the person while watching the image of the child side, Mother set has a monitor TV unit that uses a flat panel display- Including; The flat display is: A frame used as a housing of the flat display; Flat cathode ray tube with deflection yoke; And Display driving circuit board for driving the flat cathode ray tube Including, Providing a cutout to allow a portion of the deflection yoke to be placed in the display driving circuit board so that the display driving circuit board floats from the frame below the cathode ray tube in a state of holding a portion of the deflection yoke. Thereby, a space of several mm to several tens of mm is provided between the display driving circuit board and the bottom surface of the lower frame to reduce the thickness of the device; And the components are arranged in the space below the display driving circuit board of the flat panel display. The method of claim 5, And a cutout portion of the display driving circuit board on which a part of the deflection yoke can be placed is formed in a trapezoidal shape.