JPH04618Y2 - - Google Patents

Description

[Detailed Description of the Invention] Description of the Invention [Field of Industrial Application] The present invention relates to a view finder.

[Conventional technology]

The uses of view finders are diversifying, and among them, the use of view finders as monitors for video cameras is increasing. Video cameras have also become popular for both business and general consumer use, and recently, VTR-integrated video cameras have appeared. Naturally small,
Light weight and excellent design are being promoted, and there is a strong desire for each component to be light, thin, short and small.

3a and 3b are a front view of a high-voltage circuit board on which electrical components are mounted and a cross-sectional view of a viewfinder case viewed from the same direction, according to the prior art. The main components are a CRT connector 1, a flyback transformer 5, a linearity coil 4, a high voltage circuit board 6, a case 7, and electrical parts.

FIG. 2 is a side view a and a front view b of the CRT8 main body, including the deflection yoke 9, focus magnet 10, and other components, and FIG. 4 is the same as that shown in FIG.
FIG. 2 is a plan view of the CRT connector 1 in which the components shown in FIG. 2 are mounted. The main component is the second
It is similar to FIG. The two concentric circles drawn with broken lines in FIG. 3 are also concentric circles with the CRT connector 1, the inner circle represents the outer edge of the focus magnet 10 in FIG. The outer edge of the deflection yoke 9 is shown.

[Problem that the invention attempts to solve]

As shown in Figures 3 and 4, CRT connector 1
is fixed to one corner of the high voltage circuit board 6, the above-mentioned
When the components shown in Figure 2 are connected to the CRT connector 1, the deflection yoke 9 with the largest outer diameter
The outer edge of the high voltage circuit board 6 protrudes largely from the high voltage circuit board 6 as shown by the outer broken line shown in FIG. When trying to design a case for the viewfinder from the high voltage circuit board 6 on which electrical components are mounted as described above, the deflection yoke 9 as shown in the case 7 in FIG.
As the outer edge of the case 7 protrudes, a portion of the case 7 protrudes to a large extent, which is undesirable in terms of design. In addition, as shown in FIGS. 3 and 4, the flyback transformer 5 is mounted on a high voltage circuit board as a CRT.
When fixed at the farthest position from the connector 1, the linear distance between the linearity coil 4 and the focus magnet 10 becomes short, and the magnetism of the magnet 11 fixed on the top of the linearity coil 4 and The drawback is that the magnetism of the focus magnet 10 interferes with each other, causing distortion in the image and deteriorating the image quality. Furthermore, in order to increase the distance between the linearity coil 4 and the focus magnet 10, the CRT connector 1 must be fixed at a further distance from the linearity coil 4, resulting in the disadvantage that the board must be made larger. This is also undesirable from the standpoint of increasing the mounting density of electrical components.

[Means for solving problems]

In order to solve the above problem, the present invention provides a viewfinder that includes at least a CRT, a deflection yoke, a CRT connector, a high voltage circuit board, and a low voltage circuit board.
It was decided that the flyback transformer and other electrical components would be mounted and arranged in a P-shaped arrangement.
A similar effect can be obtained even if the P-shaped arrangement is arranged in a Q-shape.

〔Example〕

FIG. 1 is a layout diagram of electrical components on a high voltage circuit board 3, which is an embodiment of the present invention. In this example,
As shown in Figure 1, the CRT connector 1, flyback transformer 2, linearity coil 4, and other electrical components were mounted and arranged in a P-shape. By making one side of the high-voltage circuit board 3 concentric with the two broken-line circles, as shown by the circle drawn with broken lines in Figure 1, the space for mounting electrical components is minimized, and the board is also miniaturized. . Further, the linearity coil 4 is fixed at a position farthest from the CRT connector 1 and a portion of the linearity coil 4 is shaded by the flyback transformer 2.

[Effect of idea]

As explained above, according to the present invention, electrical components and the like can be efficiently and efficiently mounted and arranged at high density on a high-voltage circuit board.

Even though components having a linearity coil and a focus magnet are on the same board, their magnetic influence can be minimized.

High-voltage circuit boards can be made smaller and lighter.

Since there are no parts protruding from the high voltage circuit board, a smart, compact and lightweight case can be designed.

By realizing the above-mentioned items, it becomes possible to manufacture a small, lightweight viewfinder with high image quality at a low cost, and the present invention is effective from an industrial standpoint.

[Brief explanation of the drawing]

FIG. 1 is a front view of a high-voltage circuit board on which electrical components and other components are mounted in a view finder according to an embodiment of the present invention. FIG. 2 is a side view and a top view of a component consisting of a CRT, deflection yoke, focus magnet and other components connected to a CRT connector fixed on a high voltage circuit board. Figures 3a and 3b are mounting diagrams of electrical components arranged on a high-voltage circuit board using conventional technology;
FIG. 3 is a cross-sectional view of a viewfinder case that can be designed based on the high voltage circuit board; FIG. 4 is a side view of a high voltage circuit board in which the components shown in FIG. 2 are connected to the CRT connector 1 shown in FIG. 3. 1...CRT connector, 2, 5...flyback transformer, 3, 6...high voltage circuit board, 4...
Linearity coil, 7... Viewfinder case, 8... CRT, 9... Deflection yoke, 1
0... Focus magnet, 11... Magnet.

Claims (1)

[Scope of utility model registration request] In a viewfinder having at least a CRT, a deflection yoke, a CRT connector, a high voltage circuit board, and a low voltage circuit board, the circuit board to which the CRT connector is fixed is a high voltage circuit board having a flyback transformer, and electrical parts and other A view finder characterized in that parts are mounted and arranged in a P-shape around the CRT connector and flyback transformer.