KR200306593Y1 - Projection television - Google Patents

Abstract

The present invention is a projection television comprising a front and rear casing to form the appearance, at least one pair is provided between the front casing and the rear casing, the CRT assembly for projecting a projection beam is the projection angle of the projection beam A CRT bracket for supporting the CRT assembly to be inclined corresponding to the CRT assembly; It characterized in that it comprises a lower casing formed with a coupling guide for inserting both ends of each CRT bracket. As a result, the structure is simple, the weight is not only easy to move, but also manufacturing and logistics costs can be reduced. In addition, the CRT bracket may be made of a conductive metal material, and may not be deformed or altered by temperature or humidity, and may also easily release heat generated from the CRT assembly, and may easily block EMI.

Description

Projection TV {PROJECTION TELEVISION}

The present invention relates to a projection television, and more particularly, to a projection television comprising a CRT assembly for projecting an image beam and front and rear casings provided in front and rear of the CRT assembly.

In general, a projection television is composed of a CHO (CATHODE-RAY TUBE) assembly for projecting an image beam, a reflector for reflecting the projected beam, a screen for forming an image with the reflected beam, and the like.

Such projection televisions are usually equipped with large screens and are not only bulky but also expensive.

As shown in Figs. 5 and 6, the conventional projection television 101 is made of wood material between the front and rear casings 110 and 120, and the front casing 110 and the rear casing 120 to form an appearance. The formed support casing 130, the CRT assembly 140 coupled to the support casing 130 to project an image beam, a reflector 121 reflecting the image beam, and a beam reflected by the reflector 121 A plurality of speakers (not shown) provided for sound at the bottom of the front casing 110 on which the screen 112 is mounted, the screen 112 is mounted, and the CRT assembly 140 provided at the bottom of the support casing 130. And a circuit board 160 for controlling a).

With such a configuration, the conventional projection television 101 reflects the image beam projected from the CRT assembly 140 to the reflector 121 and sends it to the screen 112 to form an image.

However, in the conventional projection television 101, the support casing 130, which supports the CRT assembly 140 and forms a part of the appearance, is made of wood. Therefore, there is a problem that the support casing made of wood is deformed and deteriorated by temperature or humidity, so that the appearance of the projection television is deformed.

In addition, the wood used in the conventional projection television is made of heavy compressed wood in order to maintain a constant strength, there is a problem that the mobility of the projection television is not easy to increase the weight.

In addition, since the wood used in conventional projection television is assembled by hand using nails or adhesives, the structure is not only complicated, but there is a problem that the production cost increases, and the wood is delivered in a state assembled mainly from a wood maker. Therefore, there is a problem that the logistics cost due to storage and transportation to increase the volume.

Accordingly, an object of the present invention is to provide a projection television that is simple in structure, easy to move by reducing weight, and can reduce production and logistics costs.

Another object of the present invention is to provide a projection television that is replaced with a mold product and is not deformed or deteriorated by temperature or humidity.

1 is a perspective view of a projection television according to the present invention,

2 is an exploded perspective view of the projection television of FIG. 1;

3 is a partially exploded perspective view of the projection television of FIG. 2;

4 is a partially combined perspective view of the projection television of FIG. 1;

5 is a perspective view of a conventional projection television,

6 is an exploded perspective view of the projection television of FIG. 5.

* Explanation of symbols for the main parts of the drawings

1: projection TV

10: front casing 11: upper cover

12 Screen 15 Lower Cover

16 speaker 17 first boss

120: rear casing 21: reflector

23: projection receiving portion 30: lower casing

31: first bracket support 32: first coupling guide

33: second bracket support 34: second coupling guide

35: locking projection 40: CRT assembly

41: CRT 42: Extension

43: CRT frame 44: fastening portion

45: frame fastening 46: the first screw

50: CRT bracket 51: CRT coupling portion

52: CRT fastener 54: 2nd screw

55: CRT support 56: support latch

57: replacement support 58: the third screw

60: circuit board 70: roller

90: fastening bolt 91: through hole

The above object is, according to the present invention, in a projection television comprising a front and rear casing to form an appearance, provided in at least one pair between the front casing and the rear casing, the CRT assembly for projecting a projection beam is A CRT bracket for supporting the CRT assembly to be inclined corresponding to the projection angle of the projection beam; It is achieved by a projection television, characterized in that it comprises a lower casing formed with a coupling guide for inserting both ends of each CRT bracket.

Here, each of the CRT brackets, the CRT coupling unit is coupled to the CRT assembly; It may include a CRT support extending from the CRT coupling portion toward the CRT coupling portion to support the CRT coupling portion.

On the other hand, the inside of the lower casing is arranged parallel to the CRT coupling portion and the first bracket support is formed with a first coupling guide is inserted into the end of the CRT support, and extending upward in the horizontal direction with respect to the first bracket support It is preferred that the second bracket support is provided with a second coupling guide is arranged parallel to the CRT support and the end of the CRT coupling portion is inserted.

The CRT assembly may include: a plurality of CRTs for projecting a projection beam, a CRT frame supporting the plurality of CRTs, and inclined corresponding to the projection angle of the projection beam with respect to the CRT coupling unit; An extension part extended upward from both ends of the CRT frame; It may include a fastening portion extending outward from each of the extension portion to be parallel to the CRT coupling portion coupled to the CRT coupling portion.

And the CRT support is preferably combined with the front casing.

On the other hand, the CRT bracket is preferably made of a conductive metal material to be able to block the EMI.

In addition, the CRT bracket may be made of a plastic material.

On the other hand, the lower casing is preferably made of a conductive metal material to be able to block the EMI.

In addition, the lower casing may be made of a plastic material.

Hereinafter, with reference to the accompanying drawings will be described in detail for the subject innovation.

As shown in Figures 1 to 4, the projection television according to the present invention, the front and rear casing (10, 20) forming the appearance, and the lower casing provided between the front casing 10 and the rear casing 20 30, a CRT assembly 40 provided in the lower casing 30 to project an image beam, a CRT bracket 50 provided in a pair in the lower casing 30 to support the CRT assembly 40, and a CRT Reflector 21 reflecting the image beam projected from the assembly 40, the screen 12 to form an image with the beam reflected by the reflector 21, the front casing 10 to which the screen 12 is mounted A plurality of speakers 16 provided for the sound at the bottom of the lower casing 30 includes a circuit board 60 to serve to control the CRT assembly 40, and the like.

The front casing 10 is provided in front of the projection television 1, the upper cover 11 supporting the screen 12 in combination with the front edge of the screen 12, which forms an image on the front upper part, and an upper cover. A lower cover 15 is provided below the 11 to be coupled with the plurality of speakers 16.

The lower cover 15 has a plurality of first bosses 17 having female threads formed thereon to be fastened by the support replacement fastening holes 57 and the third screws 58 of the CRT assembly 40 to be described later.

The rear casing 20 is provided at the rear of the projection television 1, and the inner upper part is provided with a reflector 21 which is inclinedly installed to reflect the image beam projected from the CRT assembly 40 to the screen 12. do. Then, the front upper portion of the rear casing 20 is coupled by the upper cover 11 and the screw, etc. of the front casing 10, the lower end of the rear casing 20, the lower casing to be described later for coupling with the lower casing 30 A plurality of protrusion accommodating parts 23 corresponding to the locking protrusion 35 provided at the upper end of the 30 is provided.

The lower casing 30 forms the exterior of both the lower and lower sides of the projection television 1, and a circuit board 60 is provided under the casing to control the CRT assembly 40. Then, the first and second bracket supports 31 and 33 for coupling with the CRT bracket 50 inside the lower casing 30 and the projection television 1 under the lower casing 30 are easily moved. A plurality of rollers 70 are provided for the purpose. In addition, the front edge of the lower casing 30 is coupled to the lower cover 15 of the front casing 10 by a screw or the like.

In addition, the lower casing 30 is preferably a plastic injection molded product having a low production cost and easy mass production, but easily blocks EMI (ELECTROMAGNETIC INTERFERENCE) of the circuit board 60 provided at the bottom thereof. As a matter of course, it may be a conductive metal product manufactured by a method such as a press or a mold.

The first bracket support 31 is disposed in parallel with the CRT coupling portion 51 to be described later, and the first coupling guide 32 into which the end of the CRT support 55 to be described later is inserted is formed.

The second bracket support 33 is extended in the horizontal direction with respect to the first bracket support 31 is disposed parallel to each other and the CRT support 55, the second coupling guide that the end of the CRT coupling portion 51 is inserted ( 34) is formed.

Since the first and second coupling guides 32 and 34 are grooves recessed from the plate surface at each end of the first bracket support 31 and the second bracket support 33, the first and second coupling guides 32, 34 34) the respective ends of the CRT support 55 and the CRT coupling portion 51 can be fitted. In addition, the first bracket support 31, the CRT support 55, and the second bracket support 31 and the CRT support 55, and the CRT coupling part 51 are coupled to each coupling area of the first bracket support 31, the second bracket support 33, and the CRT support 55. A through hole 91 into which the fastening bolt 90 is fitted to secure the coupling between the bracket support 33 and the CRT coupling unit 51 is formed.

The CRT assembly 40 includes a plurality of CRTs 41 for projecting image beams, a plurality of CRTs 41 supporting the CRTs 41, and inclined to correspond to the projection angles of the projection beams with respect to the CRT combiner 51; 43, an extension portion 42 extending upwardly from both ends of the CRT frame 43, and an extension portion extending outward from each extension portion 42 so as to be parallel to the CRT coupling portion 51, and extending outwardly from the CRT coupling portion ( And fastening portion 44 coupled to 51. In addition, the fastening part 44 has a plurality of frame fastening holes 45 for fastening to the CRT coupling part 51 of the CRT bracket 50 to be described later.

CRT bracket 50 has a L-shape, is provided in pairs are installed on the left and right sides of the lower casing (30), respectively. Each CRT bracket 50 extends downwardly in a horizontal direction with respect to the CRT coupling portion 51 and the CRT coupling portion 51 coupled to the left or right end of the coupling portion 44 of the CRT assembly 40. It has a CRT support 55 for supporting the engaging portion (51). In addition, the CRT bracket 50 may firmly support the CRT assembly 40 and easily block the EMI (ELECTROMAGNETIC INTERFERENCE) of the CRT assembly 40, and also project a plurality of image beams. It is made of a conductive metal material to release the heat generated from the CRT (41). In addition, the conductive metal CRT bracket 50 is connected to the circuit board 60 can easily block the EMI (ELECTROMAGNETIC INTERFERENCE, electromagnetic interference) of the circuit board 60 as well as the CRT assembly 40. The CRT bracket 50 is manufactured by a method such as a press or a mold so as to support the CRT assembly 40.

CRT coupling portion 51 has a U-shaped cross-sectional shape, a plurality of CRT fastening holes 52 formed corresponding to the frame fastening hole 45 of the fastening portion 44 is formed. The inner surface of the CRT fastening hole 52 is formed with a screw thread to be fastened to the first screw 46.

The CRT support 55 also has a c-shaped cross-section and a plurality of support fastening holes 57 into which a third screw 58 for engagement with the first boss 17 of the lower cover 15 of the front casing 10 is inserted. Has

With this configuration, looking at the coupling process of the projection television 1 according to the present invention is as follows. First, the circuit board 60 is installed below the lower casing 30. At this time, the support engaging portion 57 provided on the CRT support 55 of each CRT bracket 50 is inserted into the support receiving portion 33 of the bracket support 31 provided on the lower left and right sides of the lower casing 30, and the CRT The casing fastening hole 53 provided in the CRT coupling part 51 of the bracket 50 is fastened to the second boss 37 provided on the rear side of the lower casing 30 using a second screw 54.

Then, the pair of CRT brackets 50 are fixed to the first and second bracket supports of the lower casing 30. At this time, each end of the CRT support 55 and the CRT coupling part 51 of the CRT bracket 50 is fitted to the first and second coupling guides 32 and 33 and the fastening bolt 90 is formed by the through hole 91. ) Will be inserted and fixed.

Then, the CRT assembly 40 is coupled to the pair of CRT brackets 50. At this time, the frame fastening hole 45 provided in the fastening portion 44 of the CRT assembly 40 is disposed in the CRT fastening hole 52 provided in the CRT coupling portion 51 of the CRT bracket 50 to thereby secure the first screw 46. Fasten with).

Then, the rear casing 20 provided with the reflector 21 is coupled to the upper side of the lower casing 30. At this time, the projection receiving portion 23 provided at the lower end of the rear casing 20 is inserted into the locking projection 35 provided at the upper end of the lower casing 30, and the rear casing 20 is inserted into the lower casing 30 using a screw. )

Then, the lower cover 15 of the front casing 10 in which the plurality of speakers 16 are mounted is fastened to the front of the CRT assembly 40 and the lower casing 30. At this time, the first boss 17 of the lower cover 15 is disposed in the support fastening hole 57 provided in the CRT support 55 of the CRT bracket 50 and fastened using a third screw 58, The edge of the cover 15 is screwed with the front edge of the lower casing 30.

Then, the upper cover 11 of the front casing 10, which accommodates the screen 12, is fastened with a screw to the front upper portion of the rear casing 20, and a plurality of rollers for movement under the lower casing 30 ( 70) is mounted.

Thus, the combination of the projection television according to the present invention is completed. In addition, the CRT bracket 50 supporting the CRT assembly 40 is fastened to the lower casing 30 and the lower cover 15, and made of a conductive metal material having good rigidity, thereby supporting the CRT assembly 40 safely. In addition, the heat generated from the CRT assembly 40 may be released through the CRT bracket 50, and the EMI (ELECTROMAGNETIC INTERFERENCE) of the circuit board 60 as well as the CRT assembly 40 may be easily facilitated. Can be blocked.

In the above-described embodiment, the front edge of the lower cover 15 and the lower casing 30 is coupled, the front upper portion of the upper cover 11 and the rear casing 20 and the lower and lower casings of the rear casing 20 ( All of the combination of the top of the 30) is coupled by a screw, the coupling by the screw is a method that is widely used in the existing, detailed description thereof will be omitted. In addition, the above-described coupling may be combined using a coupling means such as a locking protrusion and a locking groove instead of the coupling by screws.

In the above-described embodiment, the CRT bracket 50 is made of a conductive metal material, but may be made of a plastic injection molding to securely support the CRT assembly 40.

As described above, the projection television according to the present invention provides a CRT bracket for supporting the CRT assembly in the lower casing, so that the structure is simple and the weight is reduced, compared to the conventional wooden box, so that the movement is easy and the production cost and the logistics cost can be reduced.

In addition, the projection television according to the present invention provides a CRT bracket for supporting the CRT assembly by using a conductive metal material made of a press, a mold, and an injection mold, so as not to be deformed or altered by temperature or humidity, The heat generated can be easily released, and EMI of the CRT assembly and the circuit board can be easily blocked.

As described above, according to the present invention, the structure is simple, the weight is not only easy to move, but also the manufacturing cost and logistics costs can be reduced.

In addition, the CRT bracket may be made of a conductive metal material, and may not be deformed or altered by temperature or humidity, and may also easily release heat generated from the CRT assembly, and may easily block EMI.

Claims (9)

In a projection television comprising a front and rear casing forming the appearance, A CRT bracket provided between the front casing and the rear casing and supporting the CRT assembly such that the CRT assembly projecting the projection beam is inclined corresponding to the projection angle of the projection beam; And a lower casing having a coupling guide into which both ends of each CRT bracket are inserted. The method of claim 1, Each CRT bracket A CRT binding unit coupled to the CRT assembly; And a CRT supporter extending from the CRT coupling part in a lateral direction with respect to the CRT coupling part to support the CRT coupling part. The method of claim 2, The first bracket support is formed in the lower casing in parallel with the CRT coupling portion and the first coupling guide is formed to insert the end of the CRT support, and is extended upward in the horizontal direction with respect to the first bracket support Projection television, characterized in that the second bracket support which is arranged parallel to the CRT support and the second coupling guide is inserted into the end of the CRT coupling portion is provided. The method of claim 3, The CRT assembly is A plurality of CRTs for projecting a projection beam; A CRT frame supporting the plurality of CRTs and inclined corresponding to the projection angle of the projection beam with respect to the CRT coupling unit; An extension part extended upward from both ends of the CRT frame; And a fastening portion extending outwardly from each of the extension portions so as to be parallel to the CRT coupling portion and coupled to the CRT coupling portion. The method of claim 2, And the CRT support is coupled to the front casing. The method according to claim 1 or 2, Projection television, characterized in that the CRT bracket is made of a conductive metal material to block the EMI. The method according to claim 1 or 2, The CRT bracket is a projection television, characterized in that made of a plastic material. The method according to claim 1 or 3, Projection television, characterized in that the lower casing is made of a conductive metal material to block the EMI. The method according to claim 1 or 3, The lower casing is a projection television, characterized in that made of a plastic material.