JP2001125201A - Screen holding mechanism for display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a screen holding mechanism for display device which enables to simplify the manufacturing process, and to improve the working efficiency, etc., without the impairment of appearance. SOLUTION: Fine wires W11 to W1n and W21 to W2m are fixed to the upper side end and lower side end of a screen 8 formed by integrating a resin lenticular lens 8 and Fresnel lens 9. At this time, the front ends P11 and P1n of the wires W11 to W1n and the front ends of the wires W21 to W2m are heated and are thermally press fitted to plural light shielding parts 9a of the lenticular lens 8, by which the wires are fixed. After the wires W11 to W1n and W21 to W2m are fixed to the screen 8 in the manner described above, the screen 8 is brought into abutment on the end on the aperture 11a side of a screen frame 11 and the other ends of the wires W11 to W1n and W21 to W2m are fixed in the state of impressing a prescribed tension to the inside wall of the screen frame 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screen holding mechanism applied to a display device such as a rear projection type multi-projector for projecting an image on a transmission screen.

[0002]

2. Description of the Related Art Conventionally, a rear projection type multi-projector has been known as a display device for displaying an image on a large screen. This display device is configured to realize a large screen as a whole by arranging a plurality of unit displays each having a transmissive screen in the vertical and horizontal directions.

For example, in a rear projection type multi-projector provided with four unit displays, as shown in a perspective view of FIG.
a, 1b, 1c, 1d. Here, as a representative example of the structure of the unit display 1a, a rear projector (not shown) is housed inside the housing 2, and the screen frame 4 provided with the screen 3 is located on the front side of the housing 2. Installed.

As shown in the sectional view of FIG. 7, the screen 3 is composed of a resin-molded lenticular lens 3a and a Fresnel lens 3b.
Is attached to the screen frame 4 with the back side (the rear projector side) and the lenticular lens 3a facing the front side.

[0005] Further, through holes 5 and 6 having a small diameter are drilled at the respective side end portions of the screen 3 and the screen frame 4 by a drill or the like. 4, the screen 3 is fixed to and held on the screen frame 4. Note that FIG. 7 shows one holding mechanism as a representative, but a plurality of portions at the respective side end portions of the screen 3 and the screen frame 4 are fixed by the same holding mechanism.

Then, display light is rear-projected from the rear projector in the housing 2 toward the screen 3, and the Fresnel lens 3b condenses the display light, and the lenticular lens 3a is collected by the Fresnel lens 3b. An image is displayed by distributing the illuminated display light to the left and right, and furthermore, all the unit displays 1a, 1
Since b, 1c, and 1d perform similar image display, a large-screen display is performed as a whole.

[0007]

According to the above-mentioned conventional screen holding mechanism, as shown in FIG. 7, the through-hole 5 and the wire 7 formed in the screen 3 have the front side (the display of the lenticular lens 3a). Surface side), causing a problem in appearance.

In order to avoid such a problem in appearance,
When the above-mentioned through hole is processed to a very small diameter using a drill or the like, and an attempt is made to integrate the screen and the screen frame through an extremely thin wire in the small-diameter through hole, an extremely small-diameter through hole may be formed. There was a problem that it became difficult.

Further, since chips are generated when a through hole is opened by a drill or the like, there is a problem in treating the chips. In particular, as the diameter of the through hole becomes smaller, chips are more likely to be clogged in the through hole, so that there is a problem in that it takes time and effort to pass the wire and the manufacturing process becomes complicated.

[0010] The present invention has been made to overcome the problems of the prior art, and without impairing the appearance.
It is an object of the present invention to provide a screen holding mechanism of a display device which enables simplification of a manufacturing process, improvement of work efficiency, and the like.

[0011]

In order to achieve the above object, a screen holding mechanism of a display device according to the present invention is characterized in that one end of a wire is embedded and fixed in an end of a resin screen by heat press-fitting. By fixing the ends to the screen frame, the screen was held by the screen frame.

Further, the screen is constituted by laminating a Fresnel lens and a lenticular lens.
The wire was thinner than the width of the light-shielding portion provided on the lenticular lens.

According to these configurations, since the wire is embedded in the screen by heat press-fitting, when the screen is fixed to the screen frame, the wire does not appear on the front side of the display device, and the appearance is not impaired. Further, since the wire can be fixed to the screen only by press-fitting the wire into the screen, the manufacturing process can be simplified, the working efficiency can be improved, and the like.

Further, at least one end of the wire is covered with a resin, and the one end is heat-pressed into a screen. According to this, when the resin melted by the heat press-in is solidified, one end of the wire is firmly integrated with the screen, and the mechanical strength can be improved.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 and 2 are a perspective view and a longitudinal sectional view showing a structure and a manufacturing process of a screen holding mechanism of the display device according to the first embodiment.

FIG. 6 shows a screen holding mechanism according to this embodiment.
This is applied to a rear projection type multi-projector having the same structure as that of FIG.

That is, the rear projection type multi-projector is a display device in which a plurality of unit displays are arranged in the vertical and horizontal directions so as to obtain one large display screen as a whole. Each unit display has a structure in which a rear projector is housed inside a housing, and a screen is fixed using a screen frame on the front side of the housing. The screen holding mechanism of the present embodiment is applied for fixing and holding the screen on the screen frame.

Next, with reference to FIGS. 1 and 2, the structure of the screen holding mechanism of this embodiment will be described in detail along with the manufacturing process.

In FIG. 1A, the screen 8 has a flat plate-like structure by superposing and integrating a lenticular lens 9 and a Fresnel lens 10 molded of a transparent resin. I have. In addition, the lenticular lens 9 has a structure in which a large number of striped elongated light-shielding portions (parts that do not allow light to pass) 9a and a long and thin strip-shaped lens portion 9b are alternately arranged.

When the screen 8 is fixedly held on the screen frame 11, a plurality of wires W11 to W1n, W21
Prepare ~ W2m. These wires W11 to W1n, W21 to W
For 2 m, a metal wire having a diameter smaller than the width D and the thickness H of the light shielding portion 9a is used.

First, the tip portions P11 to P11 of the wires W11 to W1n
1n is heated to a temperature higher than the melting point of the screen 8, and each of the front end portions P11 to P1n is pressed into the n light shielding portions 9a from the upper end side of the screen 8. That is, the tip portions P11 to P1n, each of which has been heated at a high temperature, are press-fitted in the longitudinal direction of each light-shielding portion 9a at an appropriate interval L.

When press-fitted in this manner, the respective light shielding portions 9a are melted in accordance with the outer diameters of the heated front end portions P11 to P1n, so that the front end portions P11 to P1n can be advanced to the deep portions in the longitudinal direction of the respective light shielding portions 9a. it can. Furthermore, the tip portion P11 ~
When P1n cools, the above-mentioned melted portion is solidified, and therefore, as shown in FIG. 1B, the tip portions P11 to P1n are embedded and fixed in the respective light shielding portions 9a.

Next, as shown in FIG. 1B, similarly to the wires W11 to W1n, a plurality of wires W21 to W2m are buried in the plurality of light shielding portions 9a at appropriate intervals also at the lower end of the screen 8. . Here, the number n of the wires W11 to W1n fixed to the upper end of the screen 8 and the number m of the wires W21 to W2m fixed to the lower end of the screen 8 may be the same or different. In short, as described later, when the screen 8 is fixed to the screen frame 11, the wires W11 to W1n are so set that the forces applied to the wires W11 to W1n are substantially equal to the forces applied to the wires W21 to W2m. W21
It is desirable to set an interval of ~ W2m.

Next, these wires W11 to W1n and W21 to W1
2m is directed toward the Fresnel lens 10 and inserted into the opening 11a side of the screen frame 11. Then, as shown in FIG. 2, the other ends of the wires W11 to W1n are pulled,
The wire rods W21 to W21 are fixed to the upper inner wall 11b of the screen frame 11 with screws 12 under a predetermined tension.
The other end of each 2 m is pulled, and a screw 1 is attached to the lower inner wall 11 c of the screen frame 11 under a predetermined tension.
Fix with 3.

FIG. 2 shows the screws 12,
13 are shown one by one, but actually, the other ends of the wires W11 to W1n and W21 to W2m are individually fixed by a plurality of screws.

A plurality of oblique grooves 14 are previously formed at the end of the upper inner wall 11b of the screen frame 11 on the side of the opening 11a in accordance with the mounting interval L of the wire rods W11 to W1n. The wires W11 to W1n are inserted into the grooves 14 in a corresponding manner, and are fixed by the screws 12 while tension is applied to the wires W11 to W1n as described above. Also, a plurality of diagonal grooves 15 are formed in advance at the end of the lower inner wall 11c of the screen frame 11 on the opening 11a side in accordance with the mounting interval of the wires W21 to W2m. The wires W21 to W2m are inserted therein, and are fixed by the screws 13 while tension is applied to the wires W21 to W2m as described above.

Then, the screen frame 11 to which the screen 10 is fixed is attached to the housing of each unit display, and the display light is rear-projected onto the screen 10 from the rear projector housed in the housing of each unit display. , A large-screen image is displayed.

As described above, according to the screen holding mechanism of the present embodiment, the wires W11 to W1n and W21 to W2m are embedded in the screen 8 by hot press-fitting. Wire rod W11 ~
W1n and W21 to W2m do not appear on the front side, and the appearance is not impaired. Further, since no shavings are generated as in the case of processing a small hole with a drill or the like as in the prior art, the appearance is not impaired.

Also, since the wires W11 to W1n and W21 to W2m are embedded along the longitudinal direction of each light shielding portion 9a, even if the display light is rear-projected on the screen 10 from the rear projector, the wires W11 to W1n, W21 to W2m are not visible outside.
For this reason, it is possible to prevent adverse effects on the displayed image beforehand.

Further, the wire rods W11 to W1n and W21 to W2m are heat-pressed into the respective light-shielding portions 9a of the screen 8 only by press-fitting.
Since W1n and W21 to W2m can be fixed to the screen 8, effects such as simplification of the manufacturing process can be obtained.

Next, a screen holding mechanism according to a second embodiment will be described with reference to FIGS. FIG.
4 and FIG. 4 are a perspective view and a longitudinal sectional view showing the structure and manufacturing process of the screen holding mechanism of the present embodiment, and the same or corresponding parts as those in FIGS. 1 and 2 are denoted by the same reference numerals. Also,
This screen holding mechanism is also applied to a rear projection type multi-projector.

In FIG. 3A, the tips P11 to P1n of the elongated metal wires L11 to L1n are heated to a temperature higher than the melting point of the screen 8, and the tips P11 to P1n are directed in the thickness direction of the screen 10. Screen 1
At a suitable interval from the top end of the light-shielding portion 0, heat is inserted in the longitudinal direction of each light-shielding portion 9a.

Here, as representatively shown by the wire L11,
The heat source device V is connected to both sides of the front end portion P11, and heat energy is supplied to heat the front end portion P11 to a temperature higher than the melting point of the screen 8.

When the heat is injected in this manner, a part of each of the light shielding portions 9a is melted in accordance with each of the heated front end portions P11 to P1n, so that the front end portions P11 to P1n enter the deep portions in the longitudinal direction of the light shielding portions 9a. be able to.

Further, as shown by the wire L11, the light shielding portion 9a is melted along the approach path X of the tip portion P11,
Although a slight kerf is generated in the light shielding portion 9a once due to the melting, the molten resin flows into the kerf each time the wire L11 moves, and is further solidified by heat radiation. For this reason, the above-mentioned kerf is closed by the solidified resin, and the light shielding portion 9a is almost restored to the original state.

Next, after the front end portions P11 to P1n are each press-fitted to predetermined positions, the supply of heat energy from the heat source device V is stopped. As a result, the tip portions P11 to P1n are self-cooled by heat radiation, and the melted portions of the light shielding portions 9a are also solidified. As a result, the wires L11 to L1n are completely buried and fixed at one end of each light shielding portion 9a in a state of penetrating in the thickness direction of the screen 8.

Next, as shown in FIG. 3 (b), a plurality of wires L21 to L2m (only the symbol L2m is shown in the figure) are appropriately provided at the lower end of the screen 8 similarly to the wires L11 to L1n. Embedded in the plurality of light-shielding portions 9a at intervals of. The number n of the wires L11 to L1n fixed to the upper end of the screen 8 and the number m of the wires L21 to L2m fixed to the lower end of the screen 8 may be the same or different. In short, when the screen 8 is fixed to the screen frame 11, each wire L11 is set so that the force applied to each wire L11 to L1n is substantially equal to the force applied to each wire L21 to L2m.
It is desirable to set intervals of 11 to L1n and L21 to L2m.

Next, the portions of the wires L11 to L1n and L21 to L2m protruding forward from the respective light shielding portions 9a are cut off, and the wires L11 to L1n and L21 to L2m are cut off.
L1n and L21 to L2m are inserted into the openings 11a of the screen frame 11, respectively.

Then, as shown in FIG.
1n is pulled to the upper inner wall 11b of the screen frame 11 under a predetermined tension.
2, and the other end of each of the wires L21 to L2m is pulled, and is fixed to the lower inner wall 11c of the screen frame 11 with screws 13 under a predetermined tension.

FIG. 4 shows the screws 12,
13 are shown one by one, but in practice, the other ends of the wires L11 to L1n and L21 to L2m are individually fixed by a plurality of screws.

In addition, a concave step 16 is formed in advance on the opening 11a side end of the upper inner wall 11b of the screen frame 11, and a concave step 17 is formed in advance on the opening 11a side of the upper inner wall 11c of the screen frame 11 respectively. In addition, when the tip portions P11 to P1n are embedded and fixed at the upper end side of each light shielding portion 9a by the above-described heat press-fitting, the fixing positions of the tip portions P11 to P1n substantially coincide with the bottom surface of the concave step portion 16. Let me
By the above-mentioned heat press-fitting, the front end portions P21 to P2m are made into the respective light
a when embedded and fixed at the lower end side of
The fixing position of ~ P2m is made to substantially coincide with the bottom surface of the concave step portion 17.

Thus, the above-mentioned wire rods L11 to L1n and L21
L2m are fixed to the upper inner wall 11b and the lower inner wall 11c of the screen frame 11 with screws 12 and 13, respectively, in a state where a predetermined tension is applied to the wire rods L11 to L1n. The wire rods L21 to L2m are inclined toward the screw 13 from the tips P21 to P2m. Thus, the wire rods L11 to L1n
When L21 and L2m are inclined, the upper end 8a of the screen 8
Is pressed against the end of the screen frame 11 on the side of the opening 11a by oblique force due to the tension of the wires L11 to L1n, and the lower end 8b of the screen 8 is connected to the wires L21 to L2m.
The opening 11 of the screen frame 11 is
It is pressed against the end on the a side by receiving an oblique force. Thus, the screen 8 is firmly fixed to the screen frame 11.

Then, the screen frame 11 to which the screen 10 is fixed is mounted on the housing of each unit display, and the display light is rear-projected onto the screen 10 from the rear projector housed in the housing of each unit display, thereby providing a large screen. An image is displayed on the screen.

As described above, according to the screen holding mechanism of the second embodiment, the wires L11 to L1n and L21 to L2m are embedded in the screen 8 by hot press-fitting. These wires L
11 to L1n and L21 to L2m do not appear on the front side, and the appearance is not impaired. In addition, since shavings are not generated as in the case of processing small holes with a drill or the like as in the prior art,
Does not impair the appearance.

Further, since the wires L11 to L1n and L21 to L2m are embedded along the longitudinal direction of each light shielding portion 9a, even if the display light is rear-projected from the rear projector to the screen 10, the wires L11 to L1n, L21 to L2m are not visible to the outside.
For this reason, it is possible to prevent adverse effects on the displayed image beforehand.

Note that, in the present embodiment, unlike the first embodiment, the distal end portions P11 to P11 of the wire rods L11 to L1n and L21 to L2m are different.
When burying P1n, P21-P2m in each light shielding portion 9a, FIG.
Although some flaws due to melting remain along the approach path X shown in (a), since these flaws are generated within the range of each light shielding portion 9a, the screen 1 is moved from the rear projector to the screen 1.
Even if the display light is rear-projected to 0, it cannot be seen outside. For this reason, it is possible to prevent adverse effects on the displayed image beforehand.

Further, the wire rods L11 to L1n and L21 to L2m are heat-pressed into the respective light shielding portions 9a of the screen 8 only by press-fitting.
Since L1n and L21 to L2m can be fixed to the screen 8, effects such as simplification of the manufacturing process can be obtained.

Next, a third embodiment will be described with reference to FIG. FIG. 5 is a perspective view showing a structure and a manufacturing process of the screen holding mechanism of the present embodiment, and the same or corresponding portions as those in FIG. 3 are denoted by the same reference numerals. This screen holding mechanism is also applied to a rear projection type multi-projector.

In FIG. 5A, the tips Q11 to Q1n of the elongated metal wires L11 to L1n are heated to a temperature higher than the melting point of the screen 8, and the tips Q11 to Q1n are moved in the thickness direction of the screen 10. In this state, the screen 10 is heat-pressed into a predetermined light-shielding portion 9a at an appropriate distance from one side (the left side in the figure) of the screen 10. The outermost light shielding portion 9a is selected as much as possible, and the tip portions Q11 to Q1n are heat-pressed.

Here, as representatively shown by the wire L11,
The heat source device V is connected to both sides of the front end portion Q11 and heat energy is supplied to heat the front end portion Q11 to a temperature higher than the melting point of the screen 8.

When the press-fitting is performed in this manner, a part of the screen 8 is melted according to the heated tip portions Q11 to Q1n, so that the tip portions Q11 to Q1n can enter the predetermined light shielding portion 9a.

Further, as representatively shown by the wire L11, the screen 8 melts along the approach path Y from the lateral direction of the tip portion Q11, and once the screen 8 has a slight cut groove due to the melting. Occurs, but every time the wire L11 moves,
The molten resin flows into the above-mentioned kerf and is further solidified by heat radiation. For this reason, the above-mentioned cut groove is closed by the solidified resin, and the screen 8 is almost restored to the original state.

Next, after the tip portions Q11 to Q1n are each press-fitted to predetermined positions, the supply of heat energy from the heat source device V is stopped. As a result, the tip portions Q11 to Q1n are self-cooled by heat radiation, and the melted portion of the light shielding portion 9a is also solidified.

As a result, as shown in FIG. 5B, the wires L11 to L1n penetrate in the thickness direction of the screen 8 and are completely embedded and fixed in a state where they are arranged in the longitudinal direction of the light shielding portion 9a. You.

Next, like the wires L11 to L1n, a plurality of wires L21 to L2m are positioned at appropriate intervals from the other side (the right side in the figure) of the screen 8 on the right side as much as possible. Buried in the light-shielding portion 9a to be pressed by heat.

The number n of the wires L11 to L1n fixed to the upper end of the screen 8 and the number m of the wires L21 to L2m fixed to the lower end of the screen 8 may be the same or different. In short, when the screen 8 is fixed to the screen frame 11, each of the wires L11 to L1n and L21 to L2m is so arranged that the force applied to each of the wires L11 to L1n and the force applied to each of the wires L21 to L2m are substantially equal. It is desirable to set the interval.

Next, portions of the wires L11 to L1n and L21 to L2m protruding from the respective light shielding portions 9a to the front side are cut off, and the wires L11 to L1n and L21 to L2m are cut off.
L1n and L21 to L2m are inserted into the openings 11a of the screen frame 11, respectively.

Next, the other end of each of the wires L11 to L1n is pulled and fixed to a left inner wall 11L of the screen frame 11 with a predetermined tension by a plurality of screws (not shown). Of the screen frame 1 while pulling the other end of the
It is fixed to the right inner wall 11R by a plurality of screws (not shown).

Here, concave steps (not shown) similar to the concave steps 16 and 17 shown in FIG. 4 are previously formed on the left and right inner walls 11L and 11R on the opening 11a side of the screen frame 11.
Are formed in accordance with the positions of the light shielding portions 9a for fixing the wires L11 to L1n and L21 to L2m.

Thus, the above-mentioned wire rods L11 to L1n and L21
When fixed to the inner walls 11L and 11R of the screen frame 11 with a predetermined tension applied to L2m, the wire rods L11 to L2m are formed by the concave steps (not shown) as in the case shown in FIG. L1n and L21 to L2m are inclined, and the left and right sides of the screen 8 receive oblique forces on the ends of the screen frame 11 on the opening 11a side due to the tension of the wire rods L11 to L1n and L21 to L2m. And press-contact. Therefore, similar to the case shown in FIG.
The screen 8 is firmly fixed to the screen frame 11.

Then, the screen frame 11 to which the screen 10 is fixed is attached to the housing of each unit display, and the display light is rear-projected onto the screen 10 from the rear projector housed in the housing of each unit display, thereby providing a large screen. An image is displayed on the screen.

As described above, according to the screen holding mechanism of the third embodiment, the wires L11 to L1n and L21 to L2m are embedded in the screen 8 by hot pressing, so that when the screen 8 is fixed to the screen frame 11, These wires L
11 to L1n and L21 to L2m do not appear on the front side, and the appearance is not impaired. In addition, since shavings are not generated as in the case of processing small holes with a drill or the like as in the prior art,
Does not impair the appearance.

Since the wires L11 to L1n and L21 to L2m are buried along the longitudinal direction of the light shielding portions 9a, even if the display light is rear-projected on the screen 10 from the rear projector, the wires L11 to L1n, L21 to L2m are not visible to the outside.
For this reason, it is possible to prevent adverse effects on the displayed image beforehand.

Here, in the present embodiment, unlike the first embodiment, the tip portions Q of the wires L11 to L1n and L21 to L2m are different.
When 11 to Q1n and Q21 to Q2m are buried in each light-shielding portion 9a, some damage due to melting remains along the approach path 12 shown in FIG. 5A, but the wires L11 to L1n and L21 to L2m are not Since they are extremely thin, the scratches are almost inconspicuous, and are not visible outside even when the display light is rear-projected on the screen 10 from the rear projector. For this reason, it is possible to prevent adverse effects on the displayed image beforehand.

Further, the wire rods L11 to L1n and L21 to L2m are heat-pressed into the respective light-shielding portions 9a of the screen 8 only by heat-pressing.
To L1n and L21 to L2m can be fixed to the screen 8, so that effects such as simplification of the manufacturing process can be obtained.

In the first and second embodiments, as shown in FIGS. 2 and 4, the screen 8 is fixed to the upper and lower ends of the screen frame 11, and in the third embodiment,
Although the case where the screen 8 is fixed to the left and right ends of the screen frame 11 has been described, the present invention is not limited to this. The screen 8 is fixed to the upper end and the lower end of the screen frame 11 by the screen holding mechanism of the first or second embodiment, and the screen 8 is fixed to the left and right of the screen frame 11 by the screen holding mechanism of the third embodiment. , The upper, lower, left, and right ends of the screen 8 and the screen frame 11 may be fixed.

Each of the wires W11 to W1n, W21 to W2m, L11 to L1n, L21 to L2m described in the first to third embodiments.
At least the tip portions P11-P1n, P21-P2m, Q11-
Those obtained by coating Q1n and Q21 to Q2m with a resin may be used. Wires W11-W1n, W21-W2 coated with such resin
m, L11 to L1n, tip parts P11 to P1n, P21 of L21 to L2m
When P2m, Q11 to Q1n, and Q21 to Q2m are heated and the above-mentioned heat press-fitting is performed, the coating resin is melted and solidified, so that the wires W11 to W1n, W21 to W2m, L11 to L1n, L21 to
L2m and the screen 8 can be more firmly integrated.

Each of the wires W11 to W1n, W21 to W2m, L11 to L1n, L21 to L2m described in the first to third embodiments.
Of each tip P11-P1n, P21-P2m, Q11-Q1n, Q21
To Q2m may be roughened. According to this, when the melted resin is solidified by the above-mentioned heat press-fitting, the front ends P11 to P1n, P21 to P2m, Q11 to Q1n, Q21 to Q2m and the screen 8 can be more firmly integrated.

As the above-mentioned heat source device V, a power supply device for supplying electric power to each wire and heating it, a gas burner or the like can be used. Further, the apparatus is not limited to these power supply apparatuses and gas burners, but may be any apparatus capable of heating each wire to a high temperature.

[0070]

As described above, according to the present invention, one end of a wire is embedded and fixed by heat press-fitting into the end of a resin screen, and the other end of the wire is fixed to a screen frame. Since the screen is held by the screen frame, when the screen is fixed to the screen frame, the wire does not appear on the front side of the display device, and the appearance is not impaired. Further, since the wire can be fixed to the screen only by press-fitting the wire into the screen, the manufacturing process can be simplified, the working efficiency can be improved, and the like.

[Brief description of the drawings]

FIG. 1 is a perspective view for explaining a structure and a manufacturing process of a screen holding mechanism according to a first embodiment.

FIG. 2 is a longitudinal sectional view for further explaining a structure and a manufacturing process of the screen holding mechanism according to the first embodiment.

FIG. 3 is a perspective view illustrating a structure and a manufacturing process of a screen holding mechanism according to a second embodiment.

FIG. 4 is a longitudinal sectional view for further explaining a structure and a manufacturing process of a screen holding mechanism according to a second embodiment.

FIG. 5 is a longitudinal sectional view for explaining a structure and a manufacturing process of a screen holding mechanism according to a third embodiment.

FIG. 6 is a perspective view showing a configuration example of a rear projection type multi-projector.

FIG. 7 is a sectional view showing the structure of a conventional screen holding mechanism.

[Explanation of symbols]

Reference Signs List 8 screen 9 lenticular lens 9a light blocking part 9b lens part 10 Fresnel lens 11 screen frame 11a opening 11b upper inner wall 11c lower inner wall 11L left inner wall 11R right inner wall 12, 13 screw 14 , 15 ... diagonal groove 16, 17 ... concave step W11-W1n, W21-W2m, L11-L1n, L21-L2m ... wire P11-P1n, P21-P2m, Q11-Q1n, Q21-Q2m ... tip V: heat source apparatus

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2H021 AA05 BA24 5C058 BA23 BA35 EA01 EA32 EA36 EA38 5G435 AA00 AA17 BB17 DD07 EE50 GG05 GG06 GG46 KK07 LL15

Claims (5)

[Claims] 1. A method in which one end of a wire is embedded and fixed by heat press-fitting into an end of a resin screen, and the other end of the wire is fixed to a screen frame, whereby the screen is held by the screen frame. Characteristic screen holding mechanism of display device. 2. The screen holding mechanism according to claim 1, wherein the screen is formed by laminating a Fresnel lens and a lenticular lens. 3. The screen holding mechanism according to claim 2, wherein the width of the wire is smaller than a width of a light shielding portion provided on the lenticular lens. 4. The screen holding mechanism according to claim 2, wherein one end of the wire is fixed to a light shielding portion provided on the lenticular lens. 5. The screen holding mechanism for a display device according to claim 1, wherein the wire has at least one end covered with a resin.