JP2009192601A - Projection television - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a projection television in which a screen and a mirror are easily mounted and an optical arrangement is accurate. <P>SOLUTION: The projection television includes a front cabinet 2, a screen-mirror integral holding member 4 engaged with the front cabinet 2, a screen 1 held by the screen-mirror integral holding member 4, and a mirror 7 held by the screen-mirror integral holding member 4. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a projection television, and more particularly to a projection television characterized by a screen and mirror mounting structure.

  The conventional projection television has a problem in that when attaching a screen to the front cabinet or attaching a mirror to the rear cabinet, the number of parts is large and the workability of the attachment is deteriorated.

  As a measure for solving such a problem, there is one in which the screen is fixed to the front cabinet by fastening four sides of the screen holding members to the front cabinet with screws (for example, see Patent Document 1). In some cases, the upper part of the mirror attached to the rear cabinet is fixed by a mirror holding member (see, for example, Patent Document 2). In addition, there is a type in which a member for fixing the screen and a member for fixing the mirror are simultaneously fixed by screws (see, for example, Patent Document 3).

JP-A-10-42230 Japanese Patent Laid-Open No. 7-120838 JP 2001-251570 A

  In the conventional projection television, the screen holding member is fastened to the front bezel and the mirror holding member is fastened to the rear bezel with screws, so that assembly work takes time. In addition, by assembling the assembly dimension tolerances of the screen, the front bezel, and the screen holding member and the assembly dimension tolerances of the mirror, the back bezel, and the mirror holding member, the imaging surface on the screen and the reflecting surface of the mirror are increased. There is a problem that the optical arrangement becomes inaccurate. Further, when the rear cabinet made of synthetic resin has a large screen size and a large mass, there is a problem that the mirror holding member that supports the mirror is deformed and the image is distorted.

  The present invention has been made to solve these problems, and an object of the present invention is to provide a projection television in which a screen and a mirror can be easily attached and an optical arrangement is accurate.

  In order to solve the above problems, a projection television according to the present invention includes a front cabinet, a screen mirror integrated holding member engaged with the front cabinet, a screen held by the screen mirror integrated holding member, and a screen mirror. And a mirror held by an integral holding member.

  According to the present invention, the screen / mirror integrated holding member is engaged with the front cabinet, the screen is held by the screen / mirror integrated holding member, and the mirror is held by the screen / mirror integrated holding member. It is possible to provide a projection television that is easy to work and has an accurate optical arrangement.

  Embodiments of the present invention will be described below with reference to the drawings.

<Embodiment 1>
FIG. 1 is a sectional view of a projection television according to Embodiment 1 of the present invention. As shown in FIG. 1, a video display device 6 that outputs video such as a DLP (Digital Light Processing) type projector engine, a front cabinet, and the like are provided inside a projection TV case composed of a front cabinet 2 and a back cabinet 3. 2, a screen 1 fixed to 2, and a glass mirror 7 that reflects the light projected from the image display device 6 and projects the light onto the screen 1. The screen / mirror integrated holding member 4 and the protective cover 5 are combined together and engaged with the front cabinet 2. That is, the screen 1 and the mirror 7 are held by the screen / mirror integrated holding member 4, and the protective cover 5 covers a predetermined portion of the screen / mirror integrated holding member 4, and the screen / mirror integrated holding member 4 and the screen 1. , Between the screen / mirror integrated holding member 4 and the mirror 7. The screen / mirror integrated holding member 4 is made of metal, and the protective cover 5 is made of, for example, hard vinyl chloride resin and formed by extrusion molding or injection molding.

  FIG. 2 is a sectional view of the periphery of the screen mirror integrated holding member 4 according to the first embodiment of the present invention. As shown in FIG. 2, the engagement hole 43 formed on the upper surface of the screen / mirror integrated holding member 4 is engaged with the engagement portion 21 of the front cabinet 2. The fastening portion 45 formed on the back side of the screen / mirror integrated holding member 4 is fastened to the back cabinet 3 by screws 8.

  The engagement protrusion 41 and the engagement groove 42 of the screen / mirror integrated holding member 4 are engaged with the A elastic engagement portion 52 and the B elastic engagement portion 53 of the protective cover 5, respectively, so that they do not slide down. It is fixed by adjusting. The protective cover 5 is provided with an elastic protrusion 51 (first elastic protrusion) so as not to damage the screen 1 at the contact portion with the screen 1, and the mirror holding portion 44, which is a contact portion with the mirror 7, is provided with the mirror 7. An elastic protrusion (second elastic protrusion) 55 is provided so as not to damage the surface. These elastic protrusions are integrally formed by extrusion with a soft vinyl chloride resin or the like.

  From the above, since the arrangement positions of the screen 1 and the mirror 7 are determined by the shape of the protective cover 5 engaged and fixed to the screen / mirror integrated holding member 4, the dimensional tolerance due to the assembly of the front cabinet 2 and the rear cabinet 3. It is possible to arrange with high accuracy without being affected by. Further, since the mirror holding portion 44 is composed of the metal-folded screen / mirror integrated holding member 4 and the protective cover 5, the rigidity is increased, and there is no problem of deformation due to the weight of the mirror 7 itself. In addition, the protective cover 5 has an effect of preventing fine debris such as metal and resin generated at the time of fastening and fixing with the screw 8 from adhering to the screen 1 and the mirror 7.

<Embodiment 2>
The second embodiment is characterized in that the protective cover 5 of the first embodiment includes a screen protective cover 105 and a mirror protective cover 150 that can be coupled and separated.

  FIG. 3 is a sectional view of the periphery of the screen / mirror integrated holding member 4 according to the second embodiment of the present invention. FIG. 4 is an enlarged view of the screen protective cover 105 and the mirror protective cover 150 according to the second embodiment of the present invention. is there. As shown in FIGS. 3 and 4, the A elastic engagement portion 152 of the screen protective cover 105 is engaged with the engagement protrusion of the screen / mirror integrated holding member 4, and the B elastic engagement portion 153 of the mirror protective cover 150 is It is fixed by engaging with the engaging groove of the screen / mirror integrated holding member 4 and adjusting the fitting dimension so as not to slide down. The C elastic engagement portion 155 of the screen protective cover 105 and the D elastic engagement portion 156 of the mirror protective cover 150 are elastically engaged. The screen protective cover 105 is provided with an elastic protrusion 151 so as not to damage the screen at the contact portion with the screen 1, and the mirror protective cover 150 is provided with an elastic protrusion 154 so as not to damage the mirror 7 at the contact portion with the mirror 7. Is provided. These elastic protrusions are integrally formed by extrusion with a soft vinyl chloride resin or the like. Other configurations are the same as those in the first embodiment, and thus description thereof is omitted.

  FIG. 5 is an enlarged view showing a different aspect of the engaging portion between the screen protection cover 105 and the mirror protection cover 150 according to the second embodiment of the present invention. The E elastic engagement portion 157 of the screen protective cover 105 and the F elastic engagement portion 158 of the mirror protective cover 150 may be engaged in a shape as shown in FIG.

  From the above, since the protective cover is composed of the screen protective cover 105 and the mirror protective cover 150 that can be coupled and separated, the assembling work is facilitated.

<Embodiment 3>
The third embodiment is characterized in that the screen / mirror integrated holding member 205 is made of hard vinyl chloride, and the mirror holding portion is reinforced with a metal mirror holding member 204. Since other configurations are the same as those of the first embodiment, description thereof is omitted.

  FIG. 6 is a sectional view of the periphery of the screen mirror integrated holding member 205 according to the third embodiment of the present invention. As shown in FIG. 6, the engagement hole 243 formed on the upper surface of the screen / mirror integrated holding member 205 is engaged with the fastening portion 221 of the front cabinet 202. Further, the screen / mirror integrated holding member 205 and the mirror holding member 204 are sandwiched and fastened between the fastening portion 221 of the front cabinet 202 and the rear cabinet 3. The mirror holding member 204 is disposed inside the screen / mirror integrated holding member 205.

  The screen / mirror integrated holding member 205 is provided with an elastic protrusion 251 (third elastic protrusion) so as not to damage the screen 1 at a contact portion with the screen 1, and a mirror holding portion which is a contact portion with the mirror 7. An elastic protrusion 255 (fourth elastic protrusion) is provided on 244 so as not to damage the mirror 7. The elastic projections 251 and 255 are integrally formed by soft vinyl chloride resin or the like. The screen / mirror integrated holding member 205 is formed by extrusion using hard vinyl chloride or the like, and the mirror holding member 204 is made of metal as described above.

  From the above, by making the screen / mirror integrated holding member 205 made of resin, it can be manufactured at a lower cost than in the past. Further, by providing the metallic mirror holding member 204 inside the screen / mirror integrated holding member 205, the strength for holding the mirror 7 can be increased.

  As an application example of the present invention, it can be applied to a projection television.

It is sectional drawing of the projection television by Embodiment 1 of this invention. It is sectional drawing of the periphery of the screen mirror integrated holding member by Embodiment 1 of this invention. It is sectional drawing of the periphery of the screen mirror integrated holding member by Embodiment 2 of this invention. It is an enlarged view of the screen protection cover and mirror protection cover by Embodiment 2 of this invention. It is an enlarged view of the engaging part of the screen protection cover and mirror protection cover by Embodiment 2 of this invention. It is sectional drawing of the periphery of the screen mirror integrated holding member by Embodiment 3 of this invention.

Explanation of symbols

  1 screen, 2 front cabinet, 3 back cabinet, 4 screen / mirror integrated holding member, 5 protective cover, 6 video display device, 7 mirror, 8 screw, 21 engaging portion, 41 engaging protrusion, 42 engaging groove, 43 Engagement hole, 44 mirror holding part, 45 fastening part, 51 elastic protrusion, 52 A elastic engagement part, 53 B elastic engagement part, 105 screen protective cover, 150 mirror protective cover, 151 elastic protrusion, 152 A elastic engagement Part, 153 B elastic engagement part, 155 C elastic engagement part, 156 D elastic engagement part, 157 E elastic engagement part, 158 F elastic engagement part, 202 front cabinet, 204 mirror holding member, 205 screen mirror Integral holding member, 221 fastening portion, 243 engagement hole, 244 mirror holding portion, 251 elastic protrusion.

Claims (14)

Front cabinet,
A screen-mirror integrated holding member engaged with the front cabinet;
A screen held by the screen-mirror integrated holding member;
A mirror held by the screen-mirror integrated holding member;
Projection television with A back cabinet,
The projection television according to claim 1, wherein a fastening portion provided on the screen / mirror integrated holding member and the rear cabinet are fixed by screws.   The screen mirror integrated holding member is made of metal, covers a predetermined portion of the screen mirror integrated holding member, and between the screen mirror integrated holding member and the screen, the screen mirror integrated holding member and the screen mirror integrated holding member The projection television according to claim 1, further comprising a protective cover disposed between each of the mirrors.   The projection television according to claim 1, wherein the protective cover is formed by extrusion using a hard vinyl chloride resin.   The projection television according to claim 1, wherein the protective cover has a first elastic protrusion at a contact portion with the screen.   The projection television according to claim 1, wherein the first elastic protrusion is extruded by a soft vinyl chloride resin.   The projection television according to claim 1, wherein the protective cover has a second elastic protrusion at a contact portion with the mirror.   The projection television according to claim 1, wherein the second elastic protrusion is extruded by a soft vinyl chloride resin.   4. The projection television according to claim 3, wherein the protective cover includes a screen protective cover and a mirror protective cover that can be combined and separated.   The projection television according to claim 1, wherein the screen-mirror integrated holding member is extruded by a hard vinyl chloride resin.   The projection television according to claim 10, wherein the screen-mirror integrated holding member includes a metal mirror holding member inside.   11. The projection television according to claim 10, wherein the screen / mirror integrated holding member has a third elastic protrusion at a contact portion with the screen.   The projection television according to claim 10, wherein the third elastic protrusion is extruded by a soft vinyl chloride resin.   The projection television according to claim 10, wherein the screen-mirror integrated holding member has a fourth elastic protrusion at a contact portion with the mirror.

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