JPS59149475A - Portable liquid crystal television set - Google Patents

Abstract

PURPOSE:To reduce the frequency of the use of an illumination member by drawing out only a display panel part incorporating liquid crystal cell and viewing a picture by the transmission illumination of external light when proper light is obtained. CONSTITUTION:While a picture display panel block 11 is stored in a main body 10, liquid crystal cells 12 incorporated in the picture display panel block 11 and an illumination member 13 incorporated in the main body block 10 are put one over another. Light transmitted through the liquid crystal cells 12 is reflected by the illumination member 13 to view a TV picture with the reflected light at an extremely bright place. On the other hand, an illumination button 16 is turned on at a dark place to turn on the illumination member, and the picture is viewed with its light. When the external light is proper or normal, an ear part 11a is gripped to draw out the liquid crystal cells 12 until they do not overlap the main body block 10, utilizing the transmitted light of illumination.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a portable LCD television and lighting for obtaining a bright screen without increasing power consumption.

1 and 2 show a conventional example, with FIG. 1 being a front view and FIG. 2 being a partially cutaway side view. A lighting member 6 such as a light guide plate combined with an EL or miniature lamp is provided on the back of the liquid crystal cell 2 for display provided on the front of the main body 1, and the lighting member 6 is used when the surroundings are dark. An image is viewed by viewing the source of light emitted from the crystallizer cell 2. In this case, the power consumption of the lighting member becomes a problem in terms of battery life.

Another method is to insert only a reflector (not shown) in place of the illumination member 6 and view the screen using the original reflected light that enters through the liquid crystal cell 2, but due to the transmission efficiency, the screen will inevitably become dark in a slightly dark place. I end up.

The present invention relates to an improvement on this point, and when the surroundings are dimly lit or an appropriate light source is available, only the display panel portion containing the liquid crystal cell is pulled out and the image is viewed under transmitted illumination by external light. The purpose is to use fewer lighting components. Also, since it is portable, it is easy to hold it in the hand. Therefore, it is better to draw out the display panel in the same plane as the main body. The drawings will be explained in detail.

3 to 6 show the first embodiment of the present invention, and FIG. 3 is a front view;
Figure 4 is a partially cutaway side view, Figure 5 is the main body block 10.
FIG. 6 is a front view of the image display panel block 11 pulled out from the main body, and FIG. The image display panel block 11 containing the liquid crystal cell 12 has a V-groove 11. By fitting b, it is slidably connected to the main body block 1o, and can be pulled out by sandwiching the ear portion 11a. The main body block 1o has a lighting member 16 E.
L is fixed and usually the image display panel block 11
It overlaps with the liquid crystal cell 12 which is fixed to. A positioning spring 1 is attached to the end of the ■-shaped protrusion 10a of the main body block 1o.
4, which engages with the corner 11c of the image display panel block and prevents it from coming off.

A lead wire 15 connects the main body block 1o and the image display panel block 11. Two terminals 10b and 10c provided on the main body block 10 are provided in the middle of a drive circuit (not shown) for the lighting member 16, and when the image display panel block 11 is housed in the main body block 10, the image display panel A contact spring 11d fixed to the block 11 connects the two terminals 10b and the IOC, and lights up when the lighting button 16 is pressed. Therefore, when the image display panel block 11 is pulled out, there is no need to worry about forgetting to turn off the illumination button 16 because the circuit turns OFF and the illumination button 16 is turned off.

Next, the effect will be explained. In FIG. 3, when the image display panel block 11 is housed in the main body block 10, the liquid crystal cell 12 built into the image display panel block 11 overlaps with the illumination member 16 built into the main body block 1o. In extremely bright places, the TV image can be viewed by looking at the source of the light that has passed through the liquid crystal cell 12 and reflected from the illumination member 16, and in a dark place, it is sufficient to view the TV image by turning on the illumination button 16 and turning on the illumination member 16. View. If there is a suitable external light source or the brightness is normal, grasp the ear part 11a of the image display high rubronok 11 and pull it out to a position where the liquid crystal cell 12 does not overlap the main block 10, as shown in FIG. Utilizes the transmitted light of illumination such as the sun, fluorescent lights, and flashlights. In some cases, it may be effective to place a piece of white paper behind you.

7 and 8 show a second embodiment of the present invention, in which FIG. 7 is a front view and FIG. 8 is a front view of the image display panel block 11 rotated and pulled out from the main body block 1o.

An image display panel block 11 containing a liquid crystal cell 12 is rotatably attached to the main body block 10 with rivets 21.

A lighting member 16 is fixed to the main body block 10, and a liquid crystal cell 12, which is normally fixed to the image display panel block 11, overlaps with the main body block 10. The image display panel block 11 has two integrated claws 22a and 22b attached to the main body block 1.
By engaging with the positioning spring 24 fixed at 0, the seventh
Take the storage position as shown in the figure and the open position as shown in Fig. 8.

When the image display panel block 11 is placed in the storage position as shown in FIG. 7, the contact spring 24 shown in FIG. In the open position as shown in FIG. 8, the contact spring 24 is separated from the contact 25, the circuit switch is turned off, and the lighting member 13 is turned off.

Incidentally, as a modification of the embodiment, the image display panel block 11
protrude in either the up or down direction,
Different engagement and positioning structures between the image display panel block 11 and the main body block 10, and lighting member 16
It is within the scope of the present invention to change the type of the circuit switch.

As described above, the present invention moves the liquid crystal cell 12, which normally overlaps with a reflector, a lighting member, and other parts, and returns the liquid crystal cell 12 to the original state where it can transmit light, and uses a backlight to display the screen. Furthermore, by protruding from the main body block in the same plane, it is easy to hold when viewing in hand, and by using the color of the external source or background, there is no need to consume electricity for lighting. A bright and easy-to-see image can be obtained.

[Brief explanation of the drawing]

Figures 1 and 2 show conventional portable LCD televisions.
The figure is a front view, FIG. 2 is a partially cutaway view of FIG. 1, FIGS. 3 to 6 show the embodiment of the present invention, FIG. 3 is a partially cutaway side view, FIG. 5 is a front view with the image display panel block 11 pulled out, FIG. 6 is an explanatory view of the switch area of the lighting member in FIG. 5, and FIGS. 7 and 8. 7 is a front view of another embodiment of the present invention, and FIG. 8 is a front view of the drawing board display panel block pulled out. 10...Main block, 10a...■-shaped protrusion, 11...Image display bar, 11b.
...■Groove, 12...Liquid crystal cell, 16...Lighting member. Patent applicant: Citizen Watch Co., Ltd. No. 1m Fig. 2 Fig. 3 Fig. 4 Fig. 5 Fig. 6' Fig. 7 Fig. 8

Claims (2)

[Claims] (1) Consisting of a main body flock, an image display panel block, a liquid crystal cell, and a lighting member, the liquid crystal cell is provided in the image display panel block, the lighting member is provided in the main body block, and the image display panel is arranged in a normal state. The mobile phone is characterized in that the block is mounted and stored in the main body block, and when there is suitable external lighting, the liquid crystal cell of the display panel block is arranged so as to be able to protrude in a position where it does not overlap within the same plane as the main body block. LCD television. (2) The main body block and the image display panel block are provided with switches that operate depending on their relative positions, and when the image display panel block is separated from the lighting member, the drive circuit provided in the lighting member is automatically opened. A portable liquid crystal television according to claim 1, which is configured to have the following characteristics.