JP2003140265A - Projection type projector device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a projection type projector device which can surely hold a screen without making its video area narrower and enables proper shading. SOLUTION: The projection type projector device projects image and character information from a projection unit on the translucent screen 14 formed by laminating at least two or more kinds of translucent members 15a and 15b; and the screen 14 is formed by uniting the plurality of translucent members 15a and 15b by bonding an end surface of the screen 14 with a 1st self-adhesive tape 20 and the screen 14 is held by a screen frame 17 by bonding the back of the 1st self-adhesive tape 20 and a screen frame 17 together with a 2nd self-adhesive tape 21. The screen frame 17 is held by a fitting frame 18 and fitted to a main body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a projection type projector device for projecting an image or character information on a screen by using a light source to display an image.

[0002]

2. Description of the Related Art Generally, a projection type projector device irradiates an image conversion device such as a liquid crystal panel with light from a light source to project an image or character information on a screen to display an image, which is transmitted through the image conversion device. The light is magnified by the lens and projected on the screen. In addition, a screen formed by laminating a translucent member which functions as a lens on a translucent member on which an image is displayed has been developed.

FIG. 2 is an explanatory view of such a projection type projector device. FIG. 2 (a) is a conceptual configuration diagram of the projection type projector device, and FIG. 2 (b) is an example of a mounting portion of a screen to a main body. 2 is a partially cutaway sectional view of FIG.
FIG. 2C is a partially cutaway cross-sectional view showing another example of a portion where the screen is attached to the main body, and FIG. 2D is an explanatory view showing a state where the screen frame is held by the attachment frame.

As shown in FIG. 2A, the projection type projector device is formed by housing a projection unit 11 for projecting an image or character information in a main body 12 by using a light source. Light including an image, character information, and the like from the projection unit 11 is reflected by the reflecting mirror 13 and irradiates the screen 14.

The screen 14 is detachable from the main body 12 and is formed by laminating at least two kinds of translucent members. As shown in FIG. 2 (b),
The two translucent members 15a and 15b are fixed by the same double-sided adhesive tape 16 to form the screen 14, and the other surface of the double-sided adhesive tape 16 is fixed to the screen frame 17. The screen frame 17 is, as shown in FIG.
It is held by the mounting frame 18, and the mounting frame 18 is mounted on the main body 12.

Further, instead of the double-sided adhesive tape 16, FIG.
As shown in (c), a concave locking groove 19 is provided on the inner surface of the screen frame 17, and two translucent members 15a and 15b are inserted into the concave locking groove 19 and locked. There are also things.

[0007]

However, two different translucent members 15a and 15b are formed on the same double-sided adhesive tape 1.
When fixed by 6, each translucent member 15a,
In some cases, the holding force for 15b cannot be secured. The double-sided adhesive tape 16 has a function of integrating the two translucent members 15a and 15b and a function of integrating the two translucent members 15 with each other.
The two light-transmissive members 15a and 15b have different expansion coefficients from each other, and thus have a difference in expansion and contraction due to temperature change. 16 may not be able to perform two roles at the same time.

Further, the screen 14 and the screen frame 17
Between the screen 14 and the screen frame 17 is required to be shielded from light (to prevent leakage of light in the gap portion), but the double-sided adhesive tape 16 used between the screen 14 and the screen frame 17 is often transparent, and is particularly light-shielded if it is thick. You may not be able to

On the other hand, when the two translucent members 15a and 15b are held by the concave locking groove 19, the translucent member 15 is used.
Since the end portions of a and 15b are inserted into the concave locking groove 19, the area where an image or character information is displayed is narrowed. In particular, when a plurality of projection type projector devices are arranged in a matrix to form a large screen image device, a grid-like black line will enter the screen between adjacent projection type projector devices.

An object of the present invention is to provide a projection type projector device capable of reliably holding the screen without narrowing the image area of the screen and appropriately shielding light.

[0011]

According to another aspect of the present invention, there is provided a projection type projector device, which comprises a main body accommodating a projection unit for projecting an image or character information using a light source; and at least two or more kinds of translucency. A translucent screen which is formed by stacking members and which transmits information from the projection unit;
A first adhesive tape for adhering an end face of the screen to integrate a plurality of transparent members; a screen frame for holding a screen in which the plurality of transparent members are integrated by the first adhesive tape; A second adhesive tape for adhering the back surface of the first adhesive tape to the screen frame; and an attachment frame for holding the screen frame and attached to the main body.

In the present invention and the following invention, the definitions and technical meanings of terms are as follows unless otherwise specified.

The main body accommodates the projection unit and has a screen attached thereto, and projects an image or character information from the projection unit onto the screen. The projection unit has a light source and emits light from the back surface of the image conversion device to project the image and character information converted by the image conversion device onto the screen. The light source emits white light, and various discharge lamps are used, for example.

The image conversion device converts white light into images and character information for each color according to an image control signal. For example, a liquid crystal panel is used, but the white light can be converted into images and character information of three primary colors RGB. Anything is fine.

The screen is for displaying an image or character information from the projection unit and is formed of a translucent member. The translucent member is formed of acrylic resin, for example.
Further, the screen is formed by laminating at least two kinds of translucent members.

The first adhesive tape is a single-sided adhesive tape, and an end surface of a screen formed by laminating two or more kinds of translucent members is adhered to each other to integrate a plurality of translucent members. Also, the second adhesive tape is a double-sided adhesive tape,
The back surface of the first adhesive tape and the screen frame are bonded together. Thereby, the screen frame holds the screen in which the plurality of translucent members are integrated by the first adhesive tape. Then, the screen whose periphery is held by the screen frame is attached to the main body in a state where the screen frame is held by the attachment frame.

According to the present invention, the screen is formed by adhering two or more kinds of translucent members with the first adhesive tape, and the screen is adhered and fixed to the screen frame by the second adhesive tape. The first adhesive tape can hold the two translucent members in an appropriately integrated state, and the second adhesive tape can hold the screen in an appropriately fixed state on the screen frame.

A projection type projector device according to a second aspect of the present invention is characterized in that, in the first aspect of the invention, the first adhesive tape is black.

In the present invention, the first adhesive tape is black. This absorbs the leaked light in the gap between the screen and the screen frame. Therefore, the reflected light at the gap between the screen and the screen frame is reduced.

According to a third aspect of the invention, there is provided the projection type projector device according to the first or second aspect of the invention, wherein the first adhesive tape is a single-sided adhesive tape, and the screen is provided with respect to the entire four sides of the screen end surface. The second adhesive tape is a double-sided adhesive tape that is attached in the width of the thickness of the screen, and the width of the thickness of any one of the light-transmissive members with respect to the entire four sides of the end face of the screen. And is attached to the screen frame.

In the present invention, the width of the first adhesive tape is the width of the thickness of the screen, and the width of the second adhesive tape is the width of the thickness of any one of the translucent members.

As a result, even if a difference in expansion and contraction occurs between two or more different types of translucent members, the second adhesive tape will not be affected by the difference, and the screen can be more securely fixed to the screen frame.

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below. FIG. 1 is an explanatory view of a projection type projector device according to an embodiment of the present invention, FIG. 1 (a) is an exploded perspective view of the projection type projector device, and FIG. 1 (b) is a mounting portion of a screen to a main body. A partially cutaway sectional view showing an example,
FIG. 1C is a partially cutaway cross-sectional view showing another example of the portion where the screen is attached to the main body.

As shown in FIG. 1A, a main body 12 of the projection type projector device is provided with a reflecting mirror 13, which reflects light including an image and character information from a projection unit 11 (not shown). The light is reflected by the mirror 13 and irradiated on the screen 14.

A screen frame 1 is provided around the screen 14.
7 is provided, and the screen is fixed by the screen frame 17. The screen frame 17 is held by the attachment frame 18 and attached to the main body 12.

The screen 14 is formed by laminating at least two kinds of translucent members, and as shown in FIG. 1B, the two translucent members 15a and 15b are the first adhesive tape 20. Are bonded together to form the screen 14. Then, the second adhesive tape 21 adheres the other surface of the first adhesive tape 20 to the screen frame 17.

The first adhesive tape 20 is a single-sided adhesive tape and is formed in black. As a result, the leaked light in the gap between the screen 14 and the screen frame 17 is absorbed. The second adhesive tape is a double-sided adhesive tape, and holds the screen 14 by adhering the back surface of the first adhesive tape 20 and the screen frame 17.

In this way, the translucent members 15a and 15b are joined with the first adhesive tape 20 which is a single-sided adhesive tape, and the screen 14 and the screen frame 17 are joined with the second adhesive tape 21 which is a double-sided adhesive tape. Since the and are fixed, the screen 14 can be appropriately fixed to the screen frame 17 while maintaining the bonding between the translucent members 15a and 15b.

In FIG. 1B, the back surface of the first adhesive tape 20 and the screen frame 17 are entirely adhered to hold the screen 14, but as shown in FIG. The width of the adhesive tape 21 is
The width may be any thickness of 15b.
In FIG. 1C, the width of the second adhesive tape 21 is shown as the width of the translucent member 15b.

That is, the first adhesive tape 20, which is a single-sided adhesive tape, is attached to the entire circumference of the end surface of the screen 14 in the width of the thickness of the screen 14.
Then, the second adhesive tape 21 which is a double-sided adhesive tape
Is affixed to the screen frame 17 with the width of the thickness of the translucent member 15b on all four sides around the end surface of the screen 14.

As a result, even if two or more different kinds of light-transmissive members 15a and 15b are expanded or contracted, the second adhesive tape 21 will not be twisted, and the screen 1
The fixing of 4 to the screen frame 17 becomes more reliable.

[0032]

As described above, according to the first aspect of the present invention, the first adhesive tape can hold the two translucent members in an appropriately integrated state, and the second adhesive tape can be used. The screen can be held properly fixed to the screen frame.

According to the second aspect of the present invention, the reflected light at the gap between the screen and the screen frame is reduced.

According to the third aspect of the present invention, even if a difference in expansion and contraction occurs between two or more different kinds of light-transmissive members, the second adhesive tape is not affected by the difference in expansion and contraction, and the screen frame of the screen. Will be fixed more securely.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a projection type projector device according to an embodiment of the invention.

FIG. 2 is an explanatory diagram of a conventional projection type projector device.

[Explanation of symbols]

11 ... Projection unit, 12 ... Main body, 13 ... Reflector, 14
... screen, 15 ... translucent member, 16 ..., 17 ... screen frame, 18 ... mounting frame, 19 ... concave locking groove, 20
... first adhesive tape, 21 ... second adhesive tape

Claims (3)

[Claims] 1. A main body accommodating a projection unit for projecting an image or character information by using a light source; and a body formed by laminating at least two kinds of translucent members, and transmitting information from the projection unit. A translucent screen; a first adhesive tape for adhering an end face of the screen to integrate a plurality of translucent members; a plurality of translucent members integrated with the first adhesive tape A screen frame that holds the screen; a second adhesive tape that attaches the back surface of the first adhesive tape to the screen frame; and a mounting frame that holds the screen frame and is attached to the main body. A projection type projector device characterized by: 2. The projection type projector device according to claim 1, wherein the first adhesive tape is black. 3. The first adhesive tape is a single-sided adhesive tape, which is affixed with a width corresponding to the thickness of the screen on all four sides around the end surface of the screen, and the second adhesive tape is a double-sided adhesive tape. 3. An adhesive tape, which is attached to the screen frame with a width corresponding to the thickness of any one of the translucent members on all four sides around the end face of the screen. Projection type projector device.