JPH11341311A - Viewfinder device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To change the arrangement of a magnetic flux transformer and to perform the miniaturization disposing an inverter means for supplying a voltage to a light-emitting means on the back surface side of a reflection means for reflecting video images displayed by a display means in the other direction. SOLUTION: At the operating of an EVE, video images during photographing and video images at the time of reproducing a magnetic tape are displayed on a liquid crystal panel 11. The video images displayed on the liquid crystal panel 11 are reflected by a reflecting object 16, as indicated by arrows A and B and transferred to the side of an eye cap 18. The video images are enlarged to the size easy-to-see for a user by a lens 17 and viewed by peeing from the outer side of the eye cap 18. In this case, the magnetic flux transformer 14 is mounted on a second printed board 15 and disposed in a shape on the back surface side of a reflecting part 16. Thus, a thickness dimension L4 from the liquid crystal panel 11 to a first printed board 13 is lowered for the thickness of the magnetic flux transformer 14, as compared to a conventional case and the thickness dimension L3 of an EVF main body 10 can be reduced as well.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a viewfinder device which is effective when used in an electronic viewfinder (hereinafter, referred to as EVF).

[0002]

2. Description of the Related Art In recent years, camera-integrated VTRs have been reduced in size.
There is a need for a miniaturized configuration.

The configuration of a conventional viewfinder device will be described below. FIG. 2 is a sectional view showing the configuration of a conventional viewfinder device. As shown in FIG.
Reference numeral 0 denotes a substantially L-shaped EVF main body rotatably provided on the video camera, 21 denotes a liquid crystal panel for displaying a captured or reproduced video signal, and 22 denotes a flat light emitting fluorescent light for irradiating light from behind the liquid crystal panel 21. A tube 23 is a magnetic flux transformer for generating a high voltage necessary for lighting the flat light emitting fluorescent tube 22 as an inverter circuit. A magnetic flux transformer 23 and other circuit components are mounted on one surface and a flat surface is mounted on the other surface. A printed circuit board on which the light-emitting fluorescent tube 22 is mounted, 27 is an eye cap attached to the end of the EVF main body 20 on the side where the user looks, 28 is the user's eyes, 25 is a video signal displayed on the liquid crystal panel 21. Is a reflector made of a mirror or the like for reflecting the light toward the eye cap 27, and 26 is a lens for enlarging the image reflected by the reflector 25.

[0004] The operation of the conventional viewfinder device configured as described above will be described below.

First, during the operation of the EVF, the liquid crystal panel 21
, And a high voltage is generated in the magnetic flux transformer 23 to turn on the flat emission fluorescent tube 22. Images displayed on the liquid crystal panel 21 are indicated by arrows C to D
The light is reflected by the reflector 25 and transferred to the eye cap 27 side as shown in FIG. The image is magnified by the lens 26 and can be viewed from outside the eye cap 27.

[0006]

However, in the above-described conventional configuration, since the magnetic flux transformer 23 is provided on the back surface of the printed circuit board 24 on which the planar light emitting fluorescent tube 22 is mounted, from the liquid crystal panel 21 to the magnetic flux transformer 23. Has a problem that the thickness L2 of the EVF becomes large and the thickness L1 of the EVF main body 20 becomes large, so that the EVF main body 20 becomes large and, consequently, the video camera becomes large.

Generally, the thickness dimension of the magnetic flux transformer is 3 to 5
mm, which is relatively large among electronic components used in small electronic devices, the component arrangement of the liquid crystal panel, the flat light emitting fluorescent tube, and the magnetic flux transformer is important for miniaturizing the EVF.

The present invention solves the above-mentioned conventional problems, and by changing the arrangement of the magnetic flux transformer from the conventional one,
An object of the present invention is to realize a viewfinder device that can be reduced in size.

[0009]

To achieve this object, a viewfinder device according to the present invention is a viewfinder device having a substantially L-shape, comprising: display means for displaying an image; and a back face of the display means. Light-emitting means arranged as a light source disposed on the side, a reflecting means for reflecting an image displayed on the display means in another direction, and an inverter means arranged on the back side of the reflecting means and supplying a voltage to the light-emitting means. It is provided.

With this configuration, a viewfinder device that can be reduced in size can be obtained by changing the arrangement of the magnetic flux transformer from the conventional one.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is a viewfinder device having a substantially L-shape, comprising a display means for displaying an image, and a light source arranged on the back side of the display means. Light-emitting means, reflection means for reflecting an image displayed on the display means in another direction, and inverter means arranged on the back side of the reflection means and supplying a voltage to the light-emitting means. According to such a configuration, the thickness of the display means and the light emitting means can be reduced, and the size of the viewfinder device can be reduced.

According to a second aspect of the present invention, there is provided a viewfinder device having a substantially L-shape, which allows a user to view an image by looking into the image from one end side. Display means, a light emitting means disposed on the back side of the display means and serving as a light source, a first printed circuit board on which the issuing means is mounted, and reflecting an image displayed on the display means to one end side. Reflecting means, an inverter means for supplying a voltage to the light emitting means, and a second printed circuit board on which the inverter means is mounted, wherein the second printed circuit board provided with the inverter means It is arranged on the back side with respect to the reflection surface, and with such a configuration, it is possible to reduce the thickness dimension of the display means, the light emitting means, and the first printed circuit board,
This has the effect that the size of the viewfinder device can be reduced.

Hereinafter, an embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIG. (Embodiment 1) FIG. 1 is a sectional view showing the configuration of a viewfinder device according to the present embodiment.
Reference numeral 0 denotes a substantially L-shaped EVF main body which is rotatably provided in the video camera, 11 denotes a liquid crystal panel which is a display means for displaying a captured or reproduced image, and 12 denotes a liquid crystal panel.
A flat light-emitting fluorescent tube 13 serving as a light source provided behind 1 is a first printed circuit board on which the flat light-emitting fluorescent tube 12 is mounted, and 14 is a light-emitting means for causing the flat light-emitting fluorescent tube 12 to emit light. Is a second printed circuit board on which the magnetic flux transformer 14 is mounted. The second printed circuit board 15 on which the magnetic flux transformer 14 is mounted is disposed on the back side of the reflector 16. Have been.
Reference numeral 16 denotes a reflector which is a reflecting means such as a mirror for reflecting an image displayed on the liquid crystal panel 11 toward the eye cap 18. Reference numeral 17 denotes a lens for enlarging the image displayed on the liquid crystal panel 11 reflected by the reflector 16. , 18 are the EVF body 10
Eye cap attached to the end on the side where the user looks
9 is a first printed circuit board 13 and a second printed circuit board 15
The flexible printed circuit board 30 is connected to the user's eyes.

The operation of the viewfinder device of the present embodiment configured as described above will be described with reference to FIG.

First, during the operation of the EVF, the liquid crystal panel 11
The video being shot or the video when playing back the magnetic tape is displayed on the screen. At the same time, a high voltage is generated in the magnetic flux transformer 14, and the high voltage is supplied to the flat light emitting fluorescent tube 12 via the flexible printed circuit board 19 to emit light. The image displayed on the liquid crystal panel 11 is reflected by the reflector 16 as shown by arrows A to B, and is transferred to the eye cap 18 side. The image is enlarged by the lens 17 to a size that is easy for the user to see, and can be viewed by looking through the outside of the eye cap 18.

Here, the magnetic flux transformer 14 is mounted on the second printed circuit board 15 and is arranged in a space on the back side of the reflector 16. Therefore, the thickness L4 from the liquid crystal panel 11 to the first printed circuit board 13 can be reduced by the thickness of the magnetic flux transformer 14 (3 to 5 mm) as compared with the related art, and the thickness L3 of the EVF main body 10 is also reduced. Can be smaller.

As described above, according to the present embodiment, the printed circuit board 15 on which the magnetic flux transformer 14 is mounted is arranged on the side opposite to the surface of the reflector 16 such as a mirror, which reflects the image, so that the EVF can be used. The thickness dimension of the main body 10 is
4, the EVF main body 10 can be reduced in size.

[0018]

As described above, according to the present invention, the EVF body is reduced in size by reducing the thickness from the liquid crystal panel to the first printed circuit board by the thickness of the component of the magnetic flux transformer (3 to 5 mm). An excellent effect of realizing miniaturization of the video camera can be obtained.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a configuration of a viewfinder device according to an embodiment of the present invention.

FIG. 2 is a sectional view showing a configuration of a conventional viewfinder device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Liquid crystal panel 12 Flat light emission fluorescent tube 13 1st printed circuit board 14 Magnetic flux transformer 15 2nd printed circuit board 16 Reflector 19 Flexible printed circuit board

Claims (2)

[Claims] 1. A viewfinder device having a substantially L-shape, comprising: display means for displaying an image; light emitting means disposed on the back side of the display means as a light source; and an image displayed by the display means. A viewfinder device comprising: a reflecting means for reflecting light in the other direction; and an inverter means disposed on the back side of the reflecting means for supplying a voltage to the light emitting means. 2. A viewfinder device having a substantially L-shape and capable of visually checking an image when a user looks into the image from one end side, a display means arranged on the other end side to display an image, and A light emitting unit disposed on the back side of the display unit and serving as a light source, a first printed circuit board on which the issuing unit is mounted, a reflecting unit for reflecting an image displayed on the display unit to one end side, and the light emitting unit A second printed circuit board on which the inverter means is mounted, and a flexible printed circuit board connecting the first and second printed circuit boards. 2. A view finder device, wherein the printed circuit board of No. 2 is arranged on the back side of the reflection surface of the reflection means.