JPH03226190A - Projection television receiver - Google Patents

Abstract

PURPOSE:To decrease the installation area of a projection television receiver in matching with the operating state by utilizing a 1st or 2nd reflection plate so as to vary the optical path for a beam. CONSTITUTION:A reflection plate (1st reflection plate) 26a to change an optical path of a beam is placed removably in a box type case 21 able to mount a projection unit 10 at a different position is placed in an optical path unit 20 and two couple of mount pieces (2nd mount parts) 27, 27 and mount pieces (3rd mount parts) 28, 28 for mount with the projection unit 30 are provided. The projection unit 30 has a transmission screen S being a picture display section on a box type case 31 able to mount the optical unit 20 on two different faces and the 2nd reflection plate 37a for beam path conversion is placed removably. Thus, the installation area is reduced in matching with the operating state.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a projection television receiver that can function in various states by combining a plurality of components.

(Prior Art) In recent years, display devices for information media, including home television receivers, have tended to have higher image quality and larger sizes.

For example, for large television receivers of 40 inches or larger, R
, G, and B colors and three projection lenses are used in many projection television receivers.

An example shown in FIG. 7 is a conventional projection television receiver. This projection television receiver 50 has a housing 5
Three light source groups 52 are attached in-line (horizontally-linearly) to a partition plate 51a inside the device 1, and a transmission screen 53 is installed on the front surface of the casing 51 facing the light source group 52. The beam B output from the light source group 52 has a linear optical path and is directly projected onto the transmission screen 53, thereby allowing the projection television receiver 50 to function.

(However, in the conventional example, since the beam B from the light source group 52 is directly projected onto the transmission screen 53, the distance required to diffuse the beam B is in the depth direction of the housing 51.) For this reason, the length of the housing 51 is increased due to the design, making it difficult to install and transport the projection television receiver 50, for example, when combining multiple receivers to create a multi-screen at an outdoor event. The problem is that it is difficult.

(Means for Solving the Problems) The present invention has been made in view of the above problems, and includes a projection unit that includes a light source group that outputs a beam and has a first mounting portion; First attached parts corresponding to the first attached part are provided at a plurality of places to attach the projection unit so as to be movable in position, while a first reflecting plate for converting the optical path of the beam is detachable, and an optical path unit having second and third mounting portions and forming first and second openings on two different sides for guiding the beam to the outside; third and fourth openings, and second and third openings corresponding to the second and third mounting portions, respectively;
The projection unit is attached by having third attached parts on two different sides, and a second part for converting the optical path of the beam.
a projection unit having a removable reflector and a transmission screen that serves as a beam imaging section, and the projection unit is mounted on one of the first mounting sections. At the same time, by attaching the second attachment part to the second attachment part, the light source group and the transmission light can be connected to the light source group through the first reflection plate, the first opening, and the third opening. a first functional state in which a predetermined optical path is formed between the projection unit and the mold screen; By attaching it to the third attached part, a predetermined optical path is formed between the light source group and the transmission screen using the second opening, the fourth opening, and the second reflection plate. A projection television receiver is characterized in that a second functional state can be selectively shifted; and such a projection television receiver**,
The first mounting part is movable between a first position for obtaining the first optical path and the second optical path, and a second position other than this, and the first mounting part faces the - The present invention provides a projection television receiver characterized in that it can be in a third functional state forming a linear optical path.

(Example) The present invention will be explained with reference to the drawings. FIG. 1 is an exploded perspective view showing a projection type television receiver Im of the present invention, and FIG. 2 is a partial perspective view showing a state in which a reflector is attached inside an optical path unit which is a component of the projection type television receiver. , Figure 3 (A)
-(C) are assembly explanatory diagrams of a projection type television receiver, Figs. 4(A) to (C) are side views showing each functional state of the projection type television receiver, and Figs. 5(A) to ( E) is a side view showing the stacked state of the projection television receivers, and FIG. 6 is a diagram showing the stored state of the projection television receivers.

In FIG. 1, 1 is a projection television receiver. This projection television receiver 11 functions by combining three components: a projection unit 10 that outputs a beam that becomes an image, and an optical path to which this projection unit 10 is attached to form a part of the beam optical path. unit 2
0, and a projection unit 30 to which the optical path unit 20 is attached and on which the beam is focused and an image is displayed.

Hereinafter, a detailed explanation will be given based on each component.

The projection unit 10 has three light source groups 11, 11, and 11 that output beams of each color of RG-8 on the top surface 12a of a box-shaped housing 12, and the beam output portions 11a, 11a.

Attach so that 11a protrudes, and left and right side surfaces 12b.

A pair of attachment pieces (first attachment portion>13. (13)) for attachment to the optical path unit 20 are attached to the optical path unit 12b.

The mounting piece 13.13 is an elongated member having an L-shaped cross section, and one end of the base is pivotally supported on its -plane, and the other rotatable end is fixed with a screw. , − planes 12b, 12b.

Also, the other side is the ear 1113a.

(13a) extend in opposite directions, and are threaded holes 13b.

(13b) is formed. Therefore, the mounting piece 13゜1
3, as shown by the solid line, the ears 13a, 13a are on the top surface 1.
2a (first position 1) and a position where the ears 13a, 13a are parallel to the upper surface 12a (second position) as shown by the - dotted chain line. I can do it.

The optical path unit 20 includes a box-shaped housing 21 in which the projection unit 10 can be attached at different positions, and a reflection plate (first reflection plate) 26a for converting the optical path of the beam is removably located, and the projection unit 10 is mounted at different positions. Two pairs of mounting pieces (second mounting part) 27°27 and a mounting piece (third
(mounting part) 28.28.

The rectangular housing 21 has a shape in which each surface other than the left and right side surfaces 21a and 21a is open, and has a 0-shaped front surface 21b and a top surface 21c, and a concave-shaped rear surface (the first
(attached part) 21d and the lower surface (first attached part) 21e
It is equipped with Therefore, the front surface 21b and the upper surface 21c have an opening (first opening) 22b and an opening (second opening), respectively.
opening) 22c is formed, and a rear surface 21d and a lower surface 21e are formed.
A continuous opening 22d is formed in the opening 22d. Screw holes 23.23 are formed on the left and right sides of the rear surface 21d, and the projection unit 1
0 screw hole 13b formed in the mounting piece 13.13, 1
Compatible with 3b. In addition, two pairs of notches 24a, 24a and a notch 24 are provided on the left and right sides of the center and lower end of the rear surface 21d.
b, 24b is formed. Next, the inside of the housing 21 will be explained in conjunction with FIG. 2. Inside the side surfaces 21a, 21a, there is a pair of horizontal rails (first attached parts) 25.2.
5 is installed, one end of which intersects with the notches 24a, 24a. This rail 25.degree. 25 can support the reflection plate 26a or the projection unit 10 described above.

A pair of side plates 26b, 26b are attached to both sides of the reflection plate 26a, and a support portion 26C92 is attached from the side plates 26b, 26b.
6c protrudes to the left and right. By making the supports 26b, 26b correspond to the cuts 24a, 24a, the opening 2
The reflection plate 26a can be attached and detached from 2d. Support part 26
When b and 26b are locked on the rail 25.25, the reflector 2
6a is supported, and by adjusting this locking position back and forth and fixing it, the appropriate position of the reflector plate 2B can be determined.

The mounting piece 13.13 of the projection unit 10 is lockable on the rail 25.degree. 25, and its ears 13a, 13a correspond to the notches 24a, 24a formed in the rear surface 21d. Also, mounting pieces 13 are provided on the left and right sides of the lower surface 21e.
13 can be locked, and similarly the ears 13a, 13a correspond to the notches 24b, 24b.

Two pairs of mounting pieces 27. (27) and mounting piece 28.28
are fixed to the left and right side surfaces 21a, 21a so as to be flush with the front surface 21b and the upper surface 21c, respectively, and screw holes 27a, (27a) and screw holes 28a, 28a are formed respectively.

The projection unit 30 connects the optical path unit 20 on two different surfaces.
A transmission screen 32 serving as an image display section is installed in a box-shaped housing 31 that can be attached, and a reflection plate 37a for converting the optical path of the beam is removably positioned.

The rectangular housing 31 has left and right side surfaces 31a, 31a, a front surface 31b1 on which a transmission screen 32 is installed, and a top surface 31C1.
Consisting of a rear surface (second attached part) 31d with an opening (third opening) 32d formed therein and a lower surface (third attached part) 31e with an opening (fourth opening) 32e formed therein. . There are screw holes 33.3 on the left and right sides of the rear surface 31d and the bottom surface 31e, respectively.
3 and screw holes 34 and 34 are formed, and screw holes 33 and 33 are formed.
Screw holes 27a and 27a of the optical path unit 20, respectively.
.

The screw holes 34 and 34 correspond to the screw holes 28a and 28a, respectively. In addition, a pair of notches 3 are provided on the left and right sides of the rear surface 31d.
5, 35 are formed, and a pair of rails 36.36 intersecting the notches 35.35 are installed on the side surfaces 31a, 3ta. Thereby, the reflecting plate 37a can be removably positioned using the same supporting method as that for the reflecting plate 26a described above.

The assembly method and features of the projection television receiver of the present invention having the above configuration are shown in FIGS. 3(A) to (C) and FIG.
This will be explained together with A) to (C). By the way, when assembled, the projection television receiver of the present invention can be assembled into an L-shaped state (first functional state), a vertical state (second functional state), and a horizontal shape of 1 m (
Three functional states can be selected: a third functional state). Below, explanations will be given based on each functional state.

■In the L-shaped state in FIG. 3(A), the mounting piece 13 of the projection unit 10
．． 13 is set to the above-described first position, and the reflection plate 26a is placed on the optical path unit 20, while the reflection plate 37a is removed from the projection unit 30. From this state, attaching piece 13.1
The ears 13a, 13a of 3 are guided to the notches 24b, 24b, and the upper part of the projection unit 10 is inserted into the optical path unit 20 through the opening 22C.
Fixed and supported. Next, attach the mounting pieces 27.27 to the rear surface 31.
d, the screw holes 27a, 27a and the screw holes 33, 33
align the optical path unit 20 and the projection unit 30.
and screw on. Then, as shown in FIG. 4(A), the projection unit 10, the optical path unit 20, and the projection unit 30 are bent into an L-shape m1 (L-shape state). Explaining in conjunction with FIG. 3(A), the beam output from the light source group 11.
The light can reach the transmission screen S through the openings 22b and 32d, and a predetermined optical path is formed. In this L-shaped state, the optical path of the beam can be changed by using the reflector 26, and the projection television receiver 1
The depth dimension of can be reduced.

■In the vertical state in FIG. 3(B), the mounting piece 13 of the projection unit 10
．． 13 is set to the first position, and while the reflecting plate 26a is removed from the optical path unit 20, the reflecting plate 37a of the projection unit 30 is positioned, contrary to the above-mentioned cross-shaped state. From this state, attach the ears 13a and 13a of the mounting piece 13.13 to the rear surface 21d.
Insert the projection unit 10 into the optical path unit 20 by guiding it to the notches 24a, 24a from the rail 25°2.
5 is supported. Next, the mounting pieces 28.28 are directed toward the lower surface 32e of the projection unit 30, the screw holes 28a, 28a and the screw holes 34.34 are aligned, and the optical path unit 20 and the projection unit 30 are screwed together. Then, Figure 4 (B)
As shown in FIG.
*Shape II). Explaining this in conjunction with FIG. 3(B), the beams output from the light source group 11.
After the optical path is changed at point a, it can reach the transmission screen 32, and a predetermined optical path is formed. In this vertical state, the depth dimension of the casing becomes the minimum when used alone.

■In the horizontal state in FIG. 3(C), the mounting piece 13 of the projection unit 10
．． 13 is set to the second position, and both the reflecting plate 26a and the reflecting plate 37 of the optical path unit 20 and the projection unit 30 are removed. From this state, the mounting piece 13.13 is directed toward the rear surface 22d, the screw holes 13b and 23.23 are aligned, and the projection unit 10 and the optical path unit 20 are screwed together. Next, turn the mounting pieces 27.27 toward the rear surface 31d,
The optical path unit 20 and the projection unit 30 are screwed together by aligning the screw holes 27a, 27a and the screw holes 33.33. Then, as shown in FIG. 4(C), the projection unit 10, the optical path unit 20, and the projection unit 30 are arranged in a horizontal line I! (Horizontal shape 1). Explaining in conjunction with FIG. 3(C), the beam output from the light source group 11.11°11 can pass through the openings 22b and 32d and reach the transmission screen S, forming a predetermined optical path. Ru. In this horizontal state, since no reflector is used to change the optical path of the beam, there is an advantage that the brightness of the beam does not decrease and the image projected on the transmissive screen is bright.

Next, the state of a multi-screen stacked using a plurality of projection television receivers of the present invention will be described with reference to FIGS. 5(A) to 5(E).

Fig. 5 (A>) shows the projection television receiver 1 stacked in the L-shape shown in Fig. 4 (A). 40 is an installation stand with an opening formed at the top. .

After placing the lower television receiver 1 on the installation stand 40, the upper surface 31c and lower surface 318 of the projection unit 30.30 are aligned, and the projection unit 10 is placed on the optical path unit 20.
(see FIG. 1) to stack the upper projection television receiver 1 and the lower projection television receiver 1. As a result, the protrusion of the projection unit 10 is absorbed, and the upper and lower transmissive screens S
.

S can be brought close together. In this L-shaped state, when three or more are stacked, the installation area can be minimized in both depth and depth.

Next, an example shown in FIG. 5(B) is an example in which the lowest projection television receiver 1 is placed in the vertical state shown in FIG. 4(B) in the state shown in FIG. 5(A). It is. Fifth
Compared to the state shown in FIG.
There is an advantage that the position of the transmissive screen S can be set at a predetermined height.

On the other hand, FIG. 5C shows a state in which the vertical projection television receivers I11 are stacked on top of each other. When two projection television receivers 1 are stacked as shown in the figure, the installation area in depth can be minimized in a vertical state with the transmission screens S close to each other.

Other stacked states are shown in FIGS. 5(D) and 5(E).

In FIG. 5(D), the horizontal projection television receivers 1 are stacked! .

In FIG. 5(E), the projection television receivers 1 are stacked in an L-shape at the top and a horizontal shape at the bottom.

It goes without saying that when used alone or in a stacked state, the opening exposed to the outside may be covered by the roof of the mouth.

Furthermore, in the horizontal state and vertical state (or L-shaped state), the images output to the transmissive screen S are opposite, so it is necessary to rotate the operating polarization of the projection unit 10 by 180 degrees. This can be dealt with by switching the direction of the polarizing current to the polarizing coil (not shown) inside the projection unit 10.

On the other hand, in the projection television receiver of the present invention,
Projection unit 10, optical path unit 20, projection unit 3
By appropriately designing the dimensions of each of the casings of 0, it is possible to house everything in the projection unit 30 as one unit as shown in FIG. 6, and it is possible to form a shape that is convenient for transportation. In this case, mounting pieces 27.27 and 28.
28 is satisfied by allowing the housing to move forward and backward with respect to the housing 21.

(Effects of the Invention) As detailed above, in the projection television receiver of the present invention, in claim 1, the optical path of the beam is changed by using the first or second reflecting plate. Because of this change, it is possible to select the first and second states in which the depth of the projection television receiver is small. Therefore, the installation area of the projection television receiver can be reduced according to the usage situation, and it has the great advantage of being easy to install and transport.

Furthermore, in the second aspect, the light source group and the transmissive screen can face each other and can be directly projected into a third functional state, and since no reflector is used, the image output to the transmissive screen is It has the characteristic of being bright.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view showing the projection television receiver of the present invention, and FIG. 2 is a partial perspective view showing the installation state of the reflector inside the optical path unit, which is a component of the projection television receiver. 3(A) to 3(C) are assembly explanatory diagrams of a projection type television receiver, and FIGS. 4(A) to 4(C) are side views showing each functional state of the projection type television receiver. Figures 5 (A) to (E) are side views showing a stacked state of projection television receivers, Figure 6 is a diagram showing a stored state of projection television receivers, and Figure 7 is a view of a conventional projection television receiver. 1 is a diagram showing a model television receiver. DESCRIPTION OF SYMBOLS 1... Projection television receiver, 10... Projection unit, 11... Light source group, 13, 1
3... Mounting piece (first mounting part), 20... Optical path unit, 21d... Rear surface (first mounted part) 21e... Bottom surface (first mounted part), 22b. ... Opening (first opening), 22c... Opening (second opening), 26... Reflector (first reflector), 25, 25... Rail (first attached part), 27, 2
7... Mounting piece (second mounting part), 28, 28... Mounting piece (third mounting part), 3G... Projection unit, 31d... Rear surface (second mounted part) , 31e...lower surface (third attached part), 32d...opening (third opening), 32e...opening (fourth opening), 37a...reflector ( second reflector), S...transmissive screen. Patent Applicant: Japan Victor Co., Ltd. Representative Salt Water
Kunio 20 (B) (A)

Claims (1)

[Claims] (1) The projection unit is equipped with a light source group that outputs a beam, and has a first mounting part, and a plurality of first mounted parts corresponding to the first mounting part. The first reflecting plate that changes the optical path of the beam is detachable, and the first reflecting plate that changes the optical path of the beam is detachable. an optical path unit having openings formed on two different sides; third and fourth openings corresponding to the first and second openings, respectively; and third and fourth openings corresponding to the second and third mounting parts, respectively. Second,
The projection unit is attached by having third attached parts on two different sides, and a second part for converting the optical path of the beam.
a projection unit having a removable reflector and a transmission screen that serves as a beam imaging section, and the projection unit is mounted on one of the first mounting sections. At the same time, by attaching the second attachment part to the second attachment part, the light source group and the transmission light can be connected to the light source group through the first reflection plate, the first opening, and the third opening. a first functional state in which a predetermined optical path is formed between the projection unit and the mold screen; By attaching it to the third attached part, a predetermined optical path is formed between the light source group and the transmission screen using the second opening, the fourth opening, and the second reflection plate. 1. A projection television receiver, wherein the projection television receiver is capable of selectively changing the second functional state. 2. The projection television receiver according to claim 1, wherein the first mounting portion has a first position for obtaining the first optical path and the second optical path, and a second position other than this. In the second position, the light source group and the transmission screen face each other through the first opening and the third opening, forming a linear optical path. A projection television receiver characterized in that it can be in a third functional state.