JPH04275538A - Simple type folding screen - Google Patents

Abstract

PURPOSE:To facilitate the installing and housing of the screen by mounting the screen to the front end of a supporting arm which expands around a pipe. CONSTITUTION:A cylindrical slider 3 is inserted into the pipe 2 provided with stoppers 10, 11 projectably and subermersibly in the prescribed positions near both ends and the inside ends of 4 pieces of supporting arms 5 holding the 4 corners of the screen 4 are pivotally fitted to the slider 3. An arm mounting means 4 fixed to the front end of the pipe 2 and the supporting arms 5 are connected via connecting arms 9 pivotally fitted with the respective ends. The inside end of the slider 3 is pivotally fitted if the slider 3 is pushed toward the arm mounting means 4 at the front end of the pipe 2 by pushing the stopper 11 engaged with the slider 3 in a folded state in such a case. The front ends of 4 pieces of the supporting arms connected on one side thereof to the arm mounting means 4 via the connecting arms 9 are then moved in the direction expanding from each other and the screen 1 is expanded.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foldable screen that can be carried outdoors and easily set up for projection.

0002

2. Description of the Related Art As a conventional projection screen, as shown in FIG. A hanging type that winds up the screen 1 with a rod 14, and a spring roller (not shown) that has a winding mechanism section 15 at the top and an internal spring roller as shown in FIG.
There was a spring roller type in which the screen 1 was rolled up and stored, and a panel board type in which a plate-shaped screen 1' was held by a stand 16 as shown in FIG.

0003

[Problems to be Solved by the Invention] Regarding the above-mentioned conventional projection screen, first of all, the hanging type shown in FIG. If only suspended, it would be unstable and susceptible to the effects of wind, etc., which was a problem. Further, the spring roller type shown in FIG. 6 is used while being fixed at a predetermined position, and has problems in that it is not suitable for carrying and is heavy. Furthermore,
The panel board type shown in FIG. 7 has the problem that it is bulky because the screen cannot be folded, and also requires a special stand, which is also not suitable for carrying.

The present invention solves the above-mentioned conventional problems and provides a foldable screen that is easy to carry and easy to set up for projection.

[0005]

[Means for Solving the Problems] The present invention provides a pipe provided with a retractable stopper, a slider that engages with the stopper, and a slider that is slidably attached to the pipe, and a support arm that holds a screen attached to the slider. The above conventional problems have been solved by connecting one side of the support arm and one end of the pipe via a connecting arm whose ends are pivotally connected to each other.

[0006]

[Operation] The slider moves the inner end of the support arm back and forth by moving on the attached pipe, and the connecting arm guides the support arm up and down with respect to the pipe by the movement.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a plan view of the embodiment in use, and FIG. 3 is an enlarged sectional view of its main parts. Further, FIG. 2 shows the screen in a folded and stored state, and FIG. 4 is a perspective view of the screen in a used state. As shown in the figure, the simple folding screen of the present invention has a cylindrical slider 3 inserted into a pipe 2 which has stoppers 10 and 11 retractably provided at predetermined positions near both ends, and the slider 3 is inserted into the four corners of the screen 4. The inner ends of four support arms 5 that hold the pipes 5 are pivotally connected to each other, and the arm fittings 4 are fixed to the tip of the pipe 2. connected through. Note that reference numerals 6, 7, and 8 indicate pivot points of each of the arms, and A indicates a liquid crystal projector for projecting images onto the stretched screen 1.

The simple folding screen of the present invention having the above-mentioned structure is constructed by pushing in the stopper 11 that is engaged with the slider 3 in the folded state shown in FIG.
When pushed in the direction of the arm fitting 4 at the tip of the pipe 2, four supports whose inner ends are pivoted to the slider 3 and whose one side is connected to the arm fitting 4 via the connecting arm 9 are released. The ends of the arms move in a direction in which they are spread apart, so that the attached screen 1 is spread out. Then, as the slider 3 eventually engages with the stopper 10 on the other side, the screen 1 is held in a stretched state as shown in FIG. 4, and is set in a use state.

In addition, to store the screen, the stopper 10 engaged with the slider 3 is pushed in as shown by the arrow in FIG.
The screen 1 may be moved to the other side and engaged with the stopper 11 on the other side, so that the screen 1 can be stored in a low-volume manner as shown in FIG.

[0010] In this embodiment, an example was shown in which the connecting arm was attached to one end of the pipe using an arm fitting, but the arm fitting is not necessarily necessary. The connecting arm may also be pivotally connected.

[0011]

[Effects of the Invention] As described above, in the simple folding screen of the present invention, since the screen is attached to the tip of the support arm that expands around the pipe, the slider that supports the inner end of the support arm can be slid. It is extremely easy to set up and store the screen with just a single touch. Furthermore, since the screen is not bulky when folded and stored, it is easy to carry. Therefore, it becomes easy to use the device outdoors, such as in camping areas, which was difficult to do in the past, and has an excellent effect on improving the degree of usability.

[Brief explanation of the drawing]

FIG. 1 is a plan view of the embodiment in use.

FIG. 2 is an enlarged cross-sectional view of the main part of FIG. 1;

FIG. 3 is a plan view of the screen in the stored state of the embodiment.

FIG. 4 is a perspective view of the device in use.

FIG. 5 is a front view of a conventional example.

FIG. 6 is a front view of another conventional example.

FIG. 7 is a front view of still another conventional example.

[Explanation of symbols]

1 Screen 2 Pipe 3 Slider 4 Arm mount 5 Support arm 9 Connecting arm 10,11 Stopper

Claims (1)

[Claims] Claim 1: A slider that engages with the stopper is slidably attached to a pipe provided with a retractable stopper, an inner end of a support arm that holds a screen is pivotally connected to the slider, and the inner end of the support arm that holds the screen is pivotally attached to the slider. A simple folding screen formed by connecting one side and one end of the above-mentioned pipe via a connecting arm whose ends are pivotally connected to each side.