JP2002247480A - Projection television receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a projection type television receiver in which the mounting accuracy of optical components is enhanced and the investment on a metallic die of exterior parts is reduced. SOLUTION: The projection type television receiver is provided with optical components such as a mirror 3, an optical unit 2, and a screen 4, which are arranged on a basic frame 1 with high accuracy. Exterior member such as a bottom plate 6, a ceiling plate 11, side plates 8, 9, and a rear cover 10 are mounted on the basis frame.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a cabinet structure for a projection television receiver.

[0002]

2. Description of the Related Art Conventionally, a projection type television receiver employs a structure of a wooden type and a molded type or a combined type of a wooden type and a molded type. A cathode ray tube (CRT), an optical unit, and a control circuit board are provided in the lower cabinet in the chassis mounting section, and a mirror and a screen are provided in the screen section.

The chassis mounting portion has a speaker grill and a lower back cover attached to the outer surface of the lower cabinet, and the screen portion has an upper cabinet, a screen frame, an upper back cover and the like.

In these configurations, a mirror is disposed on the upper back cover, an optical unit is disposed on the lower cabinet, and a screen is disposed on the upper cabinet.
The structure was weak against impact and the like. 5 and 6 are external perspective views of a conventional projection television receiver.

[0005]

However, a conventional wooden or molded cabinet structure or a combination of wooden and molded cabinets requires a die investment for each inch, which is difficult to reduce. In addition, the structure is liable to cause displacement due to impact or the like. Furthermore, since the mirror frame is attached to the back cover by molding or the like, the mirror is easily deformed due to temperature rise inside the set and deformation of the back cover.

[0006]

In order to solve the above-mentioned problems, a projection type television receiver according to the present invention adopts a new structure by adopting an aluminum or iron frame structure as a basic configuration of the projection type television receiver. The design minimizes investment in molds such as models and model development.

Further, by mounting optical components such as an optical unit, a mirror, and a screen on an integrally formed frame, the mounting accuracy of the optical components is improved, and a deviation of an optical path (not shown) caused by an impact or the like is prevented. The structure is difficult to come out.

Further, the mirror has a structure in which the mirror is hardly deformed by thermal deformation, impact or the like of the back cover as an exterior part by avoiding direct attachment to the back cover.

Further, if the frame and the mirror frame are made of the same material such as aluminum, it is possible to prevent the mirror frame from being distorted due to a difference in linear expansion coefficient due to a set temperature rise or the like. .

[0010]

DETAILED DESCRIPTION OF THE INVENTION A first aspect of the present invention is a frame comprising an optical unit, a mirror frame, and a basic frame portion provided with optical portions of a screen portion, wherein each optical member is integrally formed. It is characterized in that the optical member is mounted on the optical member. The configuration improves the accuracy of mounting the optical member, and the rigidity can be increased by integrating the frame.

Further, according to a second aspect of the present invention, in the above-described configuration of the basic frame frame and the mirror frame of the optical member, each is unified with the same material (for example, aluminum) to have the same linear expansion coefficient, so that the inside of the set is improved. It is possible to minimize the mirror distortion even when the temperature rises.

Further, according to the present invention, the bottom portion of the basic frame is made of wood, the rear surface, the top surface, and the side surfaces are vacuum-formed covers, the lower front portion is a speaker grill attached to the net, and the screen portion is an extruded screen frame. A projection television receiver characterized by having: With this structure, the standardization of the extrusion shape of the frame, the vacuum molding of large components, or the use of wooden materials can greatly reduce the investment in molds for new models and models.

Further, according to a fourth aspect of the present invention, in the frame structure according to the first aspect, the lower portion is a wooden type.
The portion where the mirror and the screen are provided has a frame configuration, so that the rigidity and the dimensional accuracy can be secured, and the die investment can be reduced.

[0014]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
Embodiments of the invention described in FIGS.
This will be described with reference to FIG.

FIG. 1 is an external perspective view showing the concept of a projection type television receiver according to Embodiment 1 of the present invention.
FIG. 2 is a rear perspective view of a main part of the mirror attaching section of FIG. 1. FIG.
FIG. 4 is an external view in which an optical component and an exterior member are disposed on the basic frame in FIG. 1, and FIG. 4 is a combined external view of a wooden cabinet (bottom) and a frame.

As shown in FIGS. 1, 2 and 3, the projection type television receiver according to the first embodiment of the present invention comprises an integrated basic frame 1, a mirror 3 of optical components, a screen 4,
The optical unit 2 is mounted with high precision, and the basic frame 1 and the frame 2 for the mirror 3 are made of the same material (for example, aluminum) as shown in FIG. 2 so that the mirror frame 12 is hardly deformed even when the set temperature rises.

Further, FIG. 3 shows that the exterior members together with the respective optical components disposed on the basic frame 1 are a wooden bottom plate 6, a speaker grill 7 attached to a net, a side plate (right) 8 formed by vacuum forming,
It is composed of a side plate (left) 9, a rear plate 10, a top plate 11, and the like, so that investment in a mold can be minimized. FIG. 4 shows that the lower half is a conventional wooden type cabinet 15 and the upper half is a frame 14.
With the configuration described above, the intention shown in FIG. 1 can be achieved.

[0018]

As described above, according to the present invention, the rigidity is improved by integrating the basic components of the television receiver with the frame frame, and the respective optical members, optical units, mirrors, Improve the mounting accuracy of screens and the like. Furthermore, by using a frame for the basic structure, a large investment in the mold is not required, and if the frame shape is standardized, the development of the model becomes easy.

By avoiding direct attachment of the mirror to the back cover, even if the back cover is deformed by an external factor, the influence on the mirror is small. Further, if the material of the mirror frame is unified to the same material (for example, aluminum), the coefficient of linear expansion becomes the same, so that even if the internal temperature of the set increases, the distortion of the mirror can be minimized.

[Brief description of the drawings]

FIG. 1 is a conceptual perspective view of a projection television receiver according to a first embodiment of the present invention.

FIG. 2 is a rear perspective view of a main part of the mirror mounting portion of FIG. 1;

3 is an external view in which an optical component and an exterior member are arranged on the basic frame structure of FIG. 1;

FIG. 4 is an external view of a combination of a wooden mold (lower mold) and a frame.

FIG. 5 is an external perspective view of a conventional projection television receiver (all molded type).

FIG. 6 is an external perspective view of a conventional projection type television receiver (wooden + molded cabinet type).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Frame structure 2 Optical unit 3 Mirror 4 Screen 5, Screen frame 6 Bottom plate 7 Speaker grill 8 Side plate cover (right) 9 Side plate cover (left) 10 Rear cover 11 Top plate 12 Mirror frame 13 Mirror mounting bracket 14 Upper frame 15 Wooden bottom Cabinet 20 Screen 21 Upper Cabinet 22 Back Cover Upper 23 Back Cover Lower 24 Lower Cabinet 25 Speaker Grill 27 Wooden Cabinet 28 Back Cover

Claims (4)

[Claims] The frame of a projection type television is constituted by a rigid frame (corner or round), and each optical component (mirror, lens, screen, etc.) is firmly fixed on the frame. Projection type television receiver aimed at improving dimensional accuracy. 2. The material of the frame frame and the mirror frame of the optical component are made of the same material made of an aluminum frame, so that the coefficient of linear expansion is the same, and for example, distortion of the mirror caused by temperature rise inside the set is reduced. Projection television receiver characterized by the following: 3. The frame of the projection type television employs a square or round frame, and the exterior is adapted by vacuum molding or the like, thereby significantly reducing the investment in the mold and providing a structure suitable for small lot production. Projection television receiver for the purpose. 4. The structure according to claim 3, wherein the lower cabinet portion is made of a wooden material, thereby providing a structure capable of reducing investment in a mold while securing rigidity.