CN2599615Y - Shell body of rear projection display device - Google Patents

Abstract

A shell of a rear projection display device comprises a substrate, edges of which are provided with grooves and at a front end of which a frame is provided to form at least an adjusting hole, a rear cover, a bottom of which is connected to the substrate, which is provided with a base and a front end surface communicating with each other and the base of which is extended and provided with flanges to be combined with the grooves of the substrate, and a screen frame, which is equipped at an front end surface of the rear cover. With the utility model, the relative position of an optical machine and a reflecting mirror can be adjusted conveniently. Moreover, the position of the reflecting mirror is not changed when the optical machine is adjusted, which saves the adjusting time.

Description

The housing of rear projection display apparatus

[technical field]

The utility model is relevant a kind of rear projection display apparatus, refers in particular to a kind of housing of back projection apparatus.

[background technology]

At present projection display equipment mainly is divided into two kinds, one be iconoscope (Cathode RayTube, CRT) technology, another is the back projection technology of utilizing built-in optical machine engine; And the CRT technology increases because of display size, causes device volume to increase thereupon, therefore, has not applied to be used in and has been particular about light, thin, short and small occasion; And the back projection technology can have high brightness and the thin little characteristics of volume, often is applied to the occasion that large scales such as domestic TV, family movie institute, electronic toy, video conference show at present.

See also shown in Figure 1ly, known rear projection display apparatus comprises a housing 1 and places optical projection system in the housing 1 that wherein optical projection system comprises ray machine 2, catoptron 3 and screen 4; Produce image strips and be projeced on the catoptron 3 by ray machine 2, beam reflected is projeced into screen 4 again and presents to finish image.

And whether the image that its projected path decision of the image strip that ray machine 2 provides is projeced into screen 2 is crooked, there are manufacturing tolerance in right each optical element and housing 1, can produce cumulative limit when reaching assembling, therefore need mat to adjust the relative position of ray machine 2 and catoptron 3 after the assembling, image is aligned and be projeced into screen 4, make system have the best projection effect with adequate rate.

Seeing also shown in Figure 2ly, is Taiwan rear projection display apparatus 10 structures that No. 88120280 patent disclosed, and it comprises a lower house 11, a upper shell 12, a ray machine 13, a catoptron 14 and a display screen 15; These lower frame body 11 tops have an opening 111, and upper frame body 12 bottoms have a window 121; These lower house 11 inside are provided with framed structure 112 for setting firmly ray machine 13,14 of catoptrons are fixedly arranged on this upper shell 12 rear side inner faces, 15 of display screens are embedded in upper shell 12 front ends: during its assembling, be earlier ray machine 13 to be fixed on the framed structure 112 of lower house 11, again catoptron 14 and display screen 15 are installed in upper shell 12, by lower house 11 tops upper shell 12 is inserted again, and the shell structure of a sealing is finished in assembling.

When finding that when test-run a machine image can't correctly be projeced into display screen 15, just adjustable lay the grain machine 13 positions after then whole upper shell 12 need being taken apart, again test-run a machine is carried out in upper shell 12 assemblings again after the adjustment, and upper shell 12 remove after again assembling can cause catoptron 14 shift in position, therefore will increase the adjustment time; And lower house 11 has wall and framed structure 112, thus assembling electronic component and projection optics element when lower house, sight line easily is blocked and hinders assembling.

In addition, its housing assembling of LCD screen or CRT screen at present often use the buckle combination, but buckle structure can hinder mold releasability, therefore need add demoulding design (as slide block etc.) with assisted ejection when mould design; And housing with snap assembled after, promptly can't the identification buckle structure, therefore not quick detachable housing, right buckle structure generally is to adopt plastic cement material with housing, so dismounting improperly then easily makes the buckle structure damage, cause cause housing can't in conjunction with.

[utility model content]

The purpose of this utility model provides a kind of housing of rear projection display apparatus, can conveniently adjust the relative position of ray machine and catoptron, and unlikely change reflector position when adjusting ray machine, the adjustment time can be saved, and this housing is convenient to the dismounting location, and the entire combination structure is attractive in appearance.

For reaching above-mentioned purpose, the housing of a kind of rear projection display apparatus of the utility model is characterized in that: it comprises

One substrate, its periphery offers groove, and this substrate front end hangs down and establishes a framework, forms at least one adjustment hole;

One back of the body lid, the bottom surface of this back of the body lid is linked on the substrate, and should back of the body covers and have a bottom surface and a front end face that is connected, and this bottom surface extension is provided with the groove that flange is incorporated into this substrate; And

One screen framework is to be located at this back of the body lid front end face.

The housing of described rear projection display apparatus is characterized in that: this substrate is L-shaped.

The housing of described rear projection display apparatus is characterized in that: the side plate that this back of the body lid comprises an arc plate and is fixedly arranged on these arc plate both sides.

The housing of described rear projection display apparatus is characterized in that: the electronics module of this rear projection display apparatus and optics module are to be located on this substrate.

The housing of described rear projection display apparatus is characterized in that: this inboard hanging down in back of the body lid bottom surface is established at least one locking plate, and this locking plate and substrate are provided with the hole that is relatively fixed.

The housing of described rear projection display apparatus is characterized in that: the both sides of this back of the body lid are provided with ventilating opening.

The housing of described rear projection display apparatus is characterized in that: set firmly a screen in this screen framework, this screen seals the front end face of this back of the body lid.

Because the housing of rear projection display apparatus of the present utility model does not adopt buckle structure, thus need not consider demoulding design when making, and housing utilizes the screw locking so be easy to dismounting.

Optics module of the present utility model and electronics module are to be assembled in earlier on the open substrate, refill Shang Beigai after finishing, thereby can avoid back of the body lid to stop assembling sight line, ease of assembly.

When finding that when test-run a machine image can't correctly be projeced into display screen, can expose the adjustment hole that framework forms after then only panel cover need being taken apart, and the relative position of adjustable lay the grain machine and catoptron, so unlikely change of reflector position, and can watch picture by the while display screens when adjusting, therefore can accurately adjust and save the adjustment time.

In addition, the assembling of housing of the present utility model, surface of shell is unlikely to have exposed screw terminal and rough surface, and makes assembling back casing overall appearance.

[description of drawings]

Fig. 1 is the structural representation of known rear projection display apparatus.

Fig. 2 is the side sectional view of known another rear projection display apparatus.

Fig. 3 is the shell structure synoptic diagram of the utility model rear projection display apparatus.

Fig. 4 A is that the utility model substrate covers decomposing schematic representation with the back of the body.Fig. 4 B, Fig. 4 C are the partial enlarged drawings of Fig. 4 A.

Fig. 5 is the utility model substrate and back of the body lid combination synoptic diagram.

[embodiment]

Relevant the utility model is for achieving the above object, and technological means that is adopted and complementary work thereof are imitated, and lift a preferred embodiment now, and cooperate graphic be illustrated as follows:

See also shown in Figure 3, the housing 20 that is the utility model rear projection display apparatus comprises that a substrate 21, a back of the body cover 22 and one screen framework 23, cover 22 and be linked to substrate 21 tops by the back of the body, the screen framework 23 that is provided with display screens 232 is located at the back of the body and is covered 22 front end faces, and forms a housing 20 that seals.

See also shown in Figure 4, wherein these substrate 21 front ends hang down and establish a framework 211, make substrate 21 form L-shaped without exception structure, framework 211 is that electronic component such as loudspeaker, video signal control panel (figure does not show) etc. are fixing, and form at least one adjustment hole 2111, and substrate 21 has a surface 212: optics module (projection optics module), electronics module (power supply unit, control die set etc.) collocation retaining element or adjusting gear for this rear projection display apparatus are installed in the precalculated position, substrate 21 rear side periphery both sides offer groove 213, cover 22 assembling location for the back of the body and use.

The back of the body covers 22 to be made up of an arc plate 221 and the left plate 222 and the right plate 223 that are fixedly arranged on arc plate 221 both sides, making the back of the body cover 22 bottom surface 224 is connected with front end face 225, the back of the body covers 22 bottom surface 224 and is extended with flange 2241, and this flange 2241 can cooperate 213 guidings of substrate 21 grooves to insert, its faying face forms burnishing surface, makes the back of the body cover 22 and is linked on the substrate 21; In addition the back of the body cover 22 bottom surfaces, the 224 inboard vertical a pair of locking plates 2242 of establishing, and is provided with fixed orifice 2243,214 in locking plate 2242 and substrate 21 opposite positions, for lock member 215 wears the back by the inboard will carry on the back cover 22 and substrate 21 lock; The back of the body covers 22 internal faces 226 and is installed with a catoptron (figure does not show) behind in front end face 225, image strip is reflexed to the screen 232 of being located at front end face 225; These back of the body lid 22 its left plates 222 all offer ventilating opening 2221,2231 with right plate 223.

And this screen framework 23 is to be sheathed on the back of the body to cover 22 front end faces 225, and its rectangular shape also has a window 231, sets firmly a display screens 232 (as Fig. 3) in the screen framework 23, and makes window 231 sealings.

Its assembling process, consult shown in Figure 4 again, at first, the optics module and the electronics module of projection display equipment are fixedly installed in earlier on substrate 21 precalculated positions, to carry on the back again and cover 22 flange 2241 alignment grooves 213 and insert the location, back, make the back of the body cover 22 bottom surfaces and lateral edges is linked on the substrate 21, form holistic burnishing surface, and form a front end face 225 and be the structure of opening, lock lock member 215 again and cover 22 and substrate 21, and catoptron can cover 22 in the back of the body and is fixedly arranged on to carry on the back before or after assembling and covers internal face 226 with the secure bond back of the body; As shown in Figure 5, the back of the body cover 22 assemble finish after, the screen framework 23 that will be installed with display screens 232 again is assembled in to be fixed with the countersink head screw locking after the back of the body covers 22 front end faces 225, cover 22 front end faces 225 with the sealing back of the body, and horn hood 24, panel cover 25 are covered the housing (as shown in Figure 3) of finishing the utility model display device in framework 211 with assembling.

Because the utility model do not adopt buckle structure, thus need not consider demoulding design when making, and housing utilizes the screw locking so be easy to dismounting.

Optics module of the present utility model and electronics module are to be assembled in earlier on the open substrate 21, refill the back of the body after finishing and covers 22, thereby can avoid carrying on the back and cover 22 and stop the assembling sight line; And substrate 21 utilizes groove 213 and flange 2241 guidings and lock member 21 5 inner lockings when cover 22 assemblings with the back of the body, and cooperates the back of the body to cover the ventilating opening 2221 of 22 both sides setting, therefore, can reach the housing 20 of ease of assembly rear projection display apparatus.

When finding that when test-run a machine image can't correctly be projeced into display screen, can expose the adjustment hole 2111 that framework 211 forms after then only panel cover 24 need being taken apart, and the relative position of adjustment ray machine and catoptron, so unlikely change of reflector position, and can watch picture by the while display screens when adjusting, therefore can accurately adjust and save the adjustment time.

In addition, the assembling of housing of the present utility model is to utilize 213 combinations of flange 2241 collocation grooves, and lock member 215 is locked in inside and fixes, therefore, surface of shell is unlikely to have exposed screw terminal and rough surface, and reaches housing benefit attractive in appearance.

Claims (7)

1, a kind of housing of rear projection display apparatus, it is characterized in that: it comprises

One substrate, its periphery offers groove, and this substrate front end hangs down and establishes a framework, forms at least one adjustment hole;

One back of the body lid, the bottom surface of this back of the body lid is linked on the substrate, and should back of the body covers and have a bottom surface and a front end face that is connected, and this bottom surface extension is provided with the groove that flange is incorporated into this substrate; And

One screen framework is to be located at this back of the body lid front end face.

2, the housing of rear projection display apparatus as claimed in claim 1 is characterized in that: this substrate is L-shaped.

3, the housing of rear projection display apparatus as claimed in claim 1 is characterized in that: the side plate that this back of the body lid comprises an arc plate and is fixedly arranged on these arc plate both sides.

4, the housing of rear projection display apparatus as claimed in claim 1 is characterized in that: the electronics module of this rear projection display apparatus and optics module are to be located on this substrate.

5, the housing of rear projection display apparatus as claimed in claim 1 is characterized in that: this inboard hanging down in back of the body lid bottom surface is established at least one locking plate, and this locking plate and substrate are provided with the hole that is relatively fixed.

6, the housing of rear projection display apparatus as claimed in claim 1 is characterized in that: the both sides of this back of the body lid are provided with ventilating opening.

7, the housing of rear projection display apparatus as claimed in claim 1 is characterized in that: set firmly a screen in this screen framework, this screen seals the front end face of this back of the body lid.