JP2586077Y2 - Opening / closing lid video device with built-in screen - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lid-openable video device having a built-in screen.

[0002]

2. Description of the Related Art Image equipment that projects an image to the front or back using a liquid crystal plate is known. However, with the current technology, if it is used in the daytime or outdoors, the brightness (luminance) on the screen is inevitable. ) Is not enough to enjoy the video. Therefore, the image projection device equipped with the screen and the liquid crystal plate is housed in a box with an opening / closing lid, and the screen is raised by opening the lid so that the space between the screen and the image projection device is relatively dark. Is thought to be.

[0003]

When the screen and the image projection device are housed in a box with a lid as described above, a new advantage that the whole is portable and can be easily carried outdoors. However, the following problems are also involved. In other words, in order to secure a screen of a certain size or more, it is necessary to increase the area of the lid itself and the degree of opening of the lid. However, there is a problem that the size becomes larger than necessary. If the volume of the box increases, the advantage of a portable type is greatly reduced, and the condition is poor. Therefore, this invention makes it possible to increase the opening width of the lid without increasing the size of the main body, so that the size of the screen can be easily increased.
It is another object of the present invention to provide a lid-opening / closing type video device provided with a novel opening / closing support mechanism capable of extremely smoothly storing and expanding the screen.

[0004]

In the lid opening / closing type video device according to the present invention, the upper and lower ends of the screen are respectively engaged with the lid side and the main body side, and the screen stands up with the opening operation of the lid. A lid opening / closing type video device, wherein a lid opening / closing support mechanism for a main body of the lid is: (a) a link plate rotatably supported by the main body and having an elongated hole; (C) connecting means for connecting the link plate and the lower end of the screen to push the screen to the image projection position when the cover is opened. It is a built-in lid opening / closing type video device.

[0005]

FIG. 3 is an overall perspective view of a trunk type liquid crystal projector as an embodiment of a lid opening / closing type video device according to the present invention. The trunk type housing comprises a main body (1) having a handle (1a) and a lid (3) attached to the main body (1) via an opening / closing support mechanism (2) to be opened and closed. A liquid crystal projector, a power supply circuit thereof, and an 8 mm VTR device (both not shown) are provided in the main body (1), and a screen (4) for displaying an image projected by the liquid crystal projector is provided. It is provided between the lid (3) and the main body (1). (5) is an operation panel unit.

The screen (4) has a lid (3) at its upper end.
, And the lower end thereof is slidable along a rail (7) provided on the main body (1) to form a lid (3).
The screen (4) moves between an upright posture (FIG. 1) and a horizontal posture (FIG. 2) housed in close contact with the inner surface of the lid (3). (8) is a wheel shaft attached to the lower end of the screen (4). The wheel rolls and moves in the rail (7). A torsion coil spring (9) is provided on the shaft attachment (6),
The screen (4) is constantly urged to rotate clockwise in FIG.

Next, the opening and closing support mechanism (2) will be described. This mechanism (2) is rotatably mounted on a main body (1) (10) and has a substantially triangular shape having an elongated hole (11). A link plate (12) and an elongated hole (1) of the link plate (12);
It comprises a pin (13) on the side of the lid (3) that engages and protrudes into 1), and a link lever (14) connecting the link plate (12) and the lower end of the screen (4). (15) is a bracket integral with the lid (3), and a pin (13) protrudes from the bracket (15).

Further, a torsion coil spring (16) is provided on the shaft attachment (10), and urges the link plate (12) to constantly rotate clockwise in FIG. (1
7) is a spring locking portion on the main body side, and (18) is a link plate (1).
This is the spring locking portion 2).

Next, the link lever (14) will be described. One end of the link lever (14) is connected to the same shaft as the wheel shaft (8), and the other end is connected to the link plate (1).
A substantially Ω-shaped lever engaged and connected to 2), and an engagement portion with the link plate (12) projects from the link plate (12) into an elongated hole (19) formed in the lever (14). Set pins (2
0) engages.

With the above construction, in the liquid crystal projector of the above embodiment, when the cover (3) is closed, the link plate (12) is counterclockwise against the coil spring (16) in the state of FIG. When turned, the link lever (14) becomes substantially upright. When the lid (3) is lifted up by hand and opened, the link plate (12) is assisted by the coil spring (16) and turns clockwise. Then, the pin (13) rises along the elongated hole (11). As a result, the lower end of the screen (4) also gradually starts moving to the left along the rail (7), and one end of the link lever (14) on the wheel shaft (8) side is also pulled to move to the left.

When the clockwise rotation of the link plate (12) is at the final stage (FIG. 1), the link lever (14) is in a posture of being pulled between the pin (20) and the wheel shaft (8), and the screen is rotated. The lower end of (4) is pushed to the leftmost end of the rail (7). At this time, the screen (4) stands upright and is in the optimum projection position by the projector inside the main body. In FIG. 2, the coil spring (16), the rail (7) and the like are omitted.

When the lid (3) is pushed downward from the opened state of the lid, the link plate (12) starts to turn counterclockwise first, whereby the wheel shaft (8) of the link lever (14). Since one side end starts moving rightward in FIG. 1, the lower end of the screen (4) also starts moving rightward along the rail (7). Eventually, the link plate (12) and the link lever (14) are finally folded as shown in FIG.

In the above embodiment, the link means for pushing the screen to the image projection position is constituted by one link lever (14), but the two link levers (21) and (22) are as follows. May be configured. That is, as shown in FIG. 4, a shaft (2) is attached to the inner wall of the body (1) inside the body (1).
3) A first link lever (21) which is turned and turned is provided, and an elongated hole (21a) formed at a free end of the first link lever (21) is engaged with a pin (24) of the link plate (12). And a pin (22a) at one end of a second link lever (22) having substantially the same shape as the link lever (14).
Is engaged with this elongated hole (21a).

In the second embodiment, the operation is substantially the same as that of the first embodiment, and the opening and closing of the lid (3) is performed.
The screen (4) is stored and expanded.

The following points are clear through the first and second embodiments. That is, the apparent center of rotation of the lid (3) is the point P shown in FIGS. 1 and 4, but if a normal hinge is used as a support mechanism for the lid (3), this point P Since the main body (1) must be extended (1b) to this point, the extended portion (1b) is compact. If the lid (3) is attached to the Q point using a hinge without extending the main body (1), if the opening angle is the same, the opening width of the lid (3) is equal to the support mechanism of the present invention. (2) It is smaller than the device used.

[0016]

As described above, according to the present invention, it is possible to increase the opening width of the lid without unnecessarily increasing the size of the main body, and thus to increase the size of the screen. . Alternatively, if the size of the screen is fixed, the size of the main body and the lid can be made more compact. In addition, by the link means for pushing the screen to the image projection position when the lid is opened, the position of the screen when the lid is opened is automatically brought to an appropriate position in conjunction with the opening operation of the lid . In particular, the link means presses the bottom of the screen
Is often used to determine the correct projection position.
Screen hanging type equipment that is difficult to perform
However, there is an advantage that the positioning is easily performed.

[Brief description of the drawings]

FIG. 1 is a side view of a liquid crystal projector as an embodiment according to the present invention. (When the lid is open).

FIG. 2 is a side sectional view when the lid is closed.

FIG. 3 is an overall perspective view of the same.

FIG. 4 is a side view of another embodiment.

[Explanation of symbols]

 (1) Main body (2) Opening and closing support mechanism (3) Lid (4) Screen (6) Axle attachment (7) Rail (8) Wheel axle (10) Axle attachment (11) Slotted hole (12) Link plate (13) ) Pin (14) Link lever (link means) (19) Slot (20) Pin (21) First link lever (link means) (22) Second link lever (link means)

Claims (1)

(57) [Scope of request for utility model registration] An upper end of a screen is axially attached to a lid, and
A lid opening / closing video device in which an end is slidable relative to the main body, and a screen stands up with the opening operation of the lid,
Closing supporting mechanism to the main body of the lid, it is rotatably supported to (a) body (1), and an elongated hole (1
Link plate having 1) (12), (b) said link plate (12-pin (13) which projects from the lid (3) that engages with the elongated hole (11) in), (c) said link plate ( 12) and the lower end of the screen (4) are connected, and when the cover (3) is opened, the opening operation of the cover (3) is performed.
Driven by the link plate (12) that rotates in conjunction with
A lid opening / closing type video device incorporating a screen, comprising: link means (14), (21), and (22) for pushing a clean lower end to a video projection position.