CN1783977A - Screen support structure of rear projection TV set - Google Patents
Screen support structure of rear projection TV set Download PDFInfo
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- CN1783977A CN1783977A CN 200410082836 CN200410082836A CN1783977A CN 1783977 A CN1783977 A CN 1783977A CN 200410082836 CN200410082836 CN 200410082836 CN 200410082836 A CN200410082836 A CN 200410082836A CN 1783977 A CN1783977 A CN 1783977A
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- screen
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- resiliency supported
- guide ledges
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Abstract
This invention relates to a screen support structure for rear projection television set, which contains front cover with installation surface, screen mounted on said installation surface, plurality of guiding convexes, spring support sleeved on guiding convexes, springs pressed on said pressing surface, and fixing support. Said invention can effectively eliminate the screen deformation under over normal temperature and keep fine screen image quality.
Description
Technical field
The present invention relates to the screen support structure of a kind of rear-projection TV set, particularly a kind of rear-projection TV, is the screen support structure of all kinds of rear-projection TV first-selections.
Background technology
Rear-projection TV is normally by projection source; Reflection is by the speculum of the light source light of projection source emission and receive that mirror reflects goes out light and the screen that forms portrait is formed.
Fig. 1 is the structure chart of rear-projection TV in the past.
With reference to Fig. 1 traditional rear-projection TV 1 is described, it is the projector 3 by the projection image, the inner casing 2 that the above-mentioned projector 3 is installed, cover the back lid 7 of rear-projection TV rear side, be fixed in the speculum 4 of the medial surface reflection projection light 6 of above-mentioned bonnet 7, the screen 5 that at last above-mentioned projection light 6 projections is formed picture is formed.
In addition, also comprise the protecgulum 8 of the rear-projection TV 1 that is fixed with above-mentioned screen 5 and forms, make the eyelid retractor 9 that peristome supports above-mentioned screen 5 at above-mentioned protecgulum 8.Above-mentioned screen eyelid retractor 9 is that above-mentioned screen 5 is gapless to fixedly secure at the medial surface of protecgulum and the structure that designs in order to make.
Fig. 2 is the enlarged drawing of " A " part among Fig. 1.
Illustrate that with reference to Fig. 2 above-mentioned protecgulum 8 is boss 10 of making by around the medial surface peristome of protecgulum 8, and at the installed surface of making inside from above-mentioned boss 10 12, one section rides over above-mentioned boss 10, and another section is placed on the screen eyelid retractor 9 of installed surface 12, puts the screw 11 that inserts boss 10 screwed holes under the correct situation at above-mentioned eyelid retractor 9 and forms.
In addition, screen 5 around be fixed between above-mentioned installed surface 12 and above-mentioned screen eyelid retractor 9 another sections.And, lean on the firm upside that is fixed on above-mentioned installed surface under the pressurization of screen eyelid retractor 9 around the above-mentioned screen 5.
Above-mentioned screw 11 is screwed into above-mentioned boss 10 fixedly the time, and another section of screen eyelid retractor 9 pushed down above-mentioned screen 5, comes therefrom, can put on right position above-mentioned screen 5 and is fixed between installed surface 12 and the above-mentioned screen eyelid retractor 9 by this pressure.Like this and fixing above-mentioned screen 5 and above-mentioned installed surface 12 gapless closely cooperating, thus fine outward appearance can be obtained.
But, traditional screen support structure, screen 5 positions are in case by after firm having fixed, as long as above-mentioned screw 11 is not just unloaded down and can not be moved above-mentioned screen 5.Therefore, in externally hot environment or the inner high heat that takes place of TV causes that screen 5 expands, the problem that screen is deformed.
Fig. 3 is the key diagram of hooking among the screen support structure of traditional rear-projection TV.
Illustrate that with reference to Fig. 3 the screen support structure of traditional rear-projection TV is to expand when passing heat into from the outside and just being produced by the situation sub-screen that the heat that inside takes place adds.In this case,, just avoid the distortion of screen itself if screen 5 itself can expand outward, but above-mentioned screen 5 around by 9 firm being fixed on the protecgulum 8 of above-mentioned screen eyelid retractor, so screen 5 itself can not expand outward.Therefore, as shown in the drawing, the thermal expansion of screen 5 only makes screen 5 become uneven face to evagination.So distortion that produces above-mentioned screen 5, the portrait that must cause projecting on the screen is out of shape thereupon, and the result has reduced spectators' pleasant sensation.Above-mentioned phenomenon mostly occurs in tropicopolitan high temperature area.
Summary of the invention
The present invention puts forward for solving the above problems, and its objective is provides a kind of no matter how ambient temperature changes the screen support structure that also can prevent the rear-projection TV of hooking.
Another purpose is to guarantee not have the gap between screen and the protecgulum, thereby makes the screen support structure of the rear-projection TV of its good looking appearance.
Also having a purpose is to improve the screen support structure of the rear-projection TV of the portrait quality that projects screen.
The technical scheme of technical solution problem of the present invention to achieve the above object is: the screen support structure of rear-projection TV is the protecgulum that has installed surface by making; With the screen that places all around on the above-mentioned installed surface; On the medial surface of above-mentioned protecgulum, be provided with a plurality of outstanding guide ledges; Be sleeved on the above-mentioned guide ledges and play the position guide effect, and make bending-type and add pressure surface and the contacted resiliency supported device of above-mentioned screen; Add and cover former power in the above-mentioned spring that adds pressure surface; Be fixed on above-mentioned guide ledges and make bending-type and add the fixed support device that pressure surface stresses on the described spring and form.
The one side of described resiliency supported device is provided with the spring guide ledges of fixing described spring position.
The one side of described fixed support device is provided with the spring guide ledges of fixing described spring position.
Described guide ledges is propped up the support device for fixing said fixing, makes screwed hole thereon; On the said fixing eyelid retractor, be provided with and the corresponding another kind of hole of above-mentioned screwed hole; And the screw of above-mentioned screwed hole of insertion and slotted hole.
The hole that described fixed support device is provided with is the slotted hole that extends to a direction for the ease of installing.
The contact-making surface of fixed support device, resiliency supported device and screen is made horizontal plane parallel to each other.
On fixed support device, the resiliency supported device is the position of fixing spring, and then guarantees the stable recuperability that adds above-mentioned spring, makes the spring guide ledges on above-mentioned eyelid retractor.
Be placed on the screen on the protecgulum installed surface all around; Under the condition that can relatively move, support the resiliency supported device of above-mentioned screen for above-mentioned screen; To the relatively-stationary fixed support device of above-mentioned protecgulum energy; And comprise and being sandwiched between said fixing eyelid retractor and the resiliency supported device, and can stress on resiliency supported device recuperability, keep the spring of screen position by this recuperability again.
Be included as the spring guide ledges of determining spring position.
Above-mentioned recuperability can be regulated by the size that the fixed support device is added on the amount of contraction of spring.
From the another side, the screen support structure of rear-projection TV of the present invention is to be placed on screen on the protecgulum installed surface by Qi Sijiao; Movably under the state, support the resiliency supported device of above-mentioned screen with respect to above-mentioned screen; To the relatively-stationary fixed support device of above-mentioned protecgulum; And the spring that produces elastic recovering force between said fixing eyelid retractor and the above-mentioned resiliency supported device is formed.This spring is when making above-mentioned resiliency supported device produce recuperability, the position of leaning on above-mentioned recuperability to keep above-mentioned screen.
The present invention compared with prior art, screen support structure of the present invention is surpassing the distortion that also can prevent screen under the adverse circumstances of normal temperature;
Because of having prevented the distortion of screen, and then prevented that also the image quality that the distortion because of screen causes from worsening;
Because can control the gap between the side direction of screen and protecgulum,, make the consumer can obtain satisfied appreciation effect so prevent the deterioration of screen portrait quality.
Description of drawings
Fig. 1 is the structure chart of rear-projection TV in the past.
Fig. 2 is the enlarged drawing of " A " part among Fig. 1.
Fig. 3 is the key diagram of hooking among the screen support structure of traditional rear-projection TV.
Fig. 4 is the decomposing schematic representation of screen support structure of the present invention.
Fig. 5 is the plan structure schematic diagram of fixed support device of the present invention.
Fig. 6 is the main TV structure schematic diagram of fixed support device of the present invention.
Fig. 7 is the side-looking structural representation of fixed support device of the present invention.
Fig. 8 is the plan structure schematic diagram of resiliency supported device of the present invention.
Fig. 9 is the main TV structure schematic diagram of resiliency supported device of the present invention.
Figure 10 is the side-looking structural representation of resiliency supported device of the present invention.
Figure 11 is a screen support structure decomposition texture schematic diagram of the present invention.
Figure 12 is the assembly structure schematic diagram of screen support structure of the present invention.
The symbol of drawing major part is said
20: protecgulum; 22: installed surface; 25: screen;
30: the resiliency supported device; 35: the fixed support device; 40: screw;
45: spring
Embodiment
Following with reference to drawing, further describe embodiments of the invention in detail.Certainly, be not limited to the drawing of thinking of the present invention and illustrated true example, can understand party of the present invention, within thinking scope of the present invention, by increasing inscape, variable factor, deletion key element, merging means such as key element and just be easy to propose another kind of implementations.
Fig. 4 is the decomposing schematic representation of screen support structure of the present invention.
Illustrate that with reference to Fig. 4 supporting construction of the present invention is by protecgulum 20, a plurality of guide ledges 21 of making at the medial surface of above-mentioned protecgulum 20, be placed on the screen 25 of aspect on the above-mentioned protecgulum, pushing down above-mentioned screen with certain elastic force can make it be fixed on the resiliency supported device 30 of assigned position, the spring 45 that produces authorized pressure is arranged on above-mentioned resiliency supported device 30, the fixed support device 35 that pressing spring is arranged on above-mentioned spring, the screw 40 that said fixing eyelid retractor 35 corresponding above-mentioned guide ledges 21 are fixed is formed.
Describe in detail again, on above-mentioned guide ledges 21, be shaped on the screwed hole that is used to insert hold-down screw 40 usefulness.
In addition, in order to determine the position of fixing spring 45, on resiliency supported device 30 and fixed support device 35, respectively made corresponding spring guide ledges 34,39.
Also have, as shown in the drawing, make very long bar, guarantee that whole four limits of screen 25 can both be fixed on the eyelid retractor at above-mentioned fixed support device 35 and elasticity supporter 30.
By above-mentioned structure, illustrate that the effect of screen support structure of the present invention is simply described as follows.
After on the medial surface of above-mentioned protecgulum 20, putting screen, resiliency supported device 30 be placed on screen around on.At this moment, above-mentioned resiliency supported device 30 is placed on the correct position by guide ledges 21.Just, among a plurality of borehole jacks that above-mentioned elasticity supporter 30 is made are gone into the process of guide ledges 21, play the guiding role and convenient correct arrangement.
Put after the above-mentioned resiliency supported device 30, spring 45 just can find the tram.Say in detail again, play the guiding role, above-mentioned spring (45) is inserted on the position of spring guide ledges, then fixed support device 35 is placed on above it by above-mentioned resiliency supported device 30 made spring guide ledges.
One section of above-mentioned fixed support device 35 rides on the above-mentioned guide ledges 21, and another section combines last with spring 45.Then, insert screw and fixed support device 35 is fixed on the protecgulum 20 at the position that combines with above-mentioned guide ledges 21.Fixedly during fixed support device 35, fixed support device 35 will descend pressing spring by screw 40, and the spring of being pressed is with certain pressure compression elasticity eyelid retractor 30 so.30 of above-mentioned resiliency supported devices lean on by spring loaded elastic recovering force, and the screen 25 that is placed between resiliency supported device 30 and the protecgulum 20 is fixed on definite position.
On the one hand, on drawing, only represent a pair of above-mentioned fixed support device 35 and or the structure of above-mentioned resiliency supported device 30.But in fact, each face of screen can form most, and perhaps forming does not influence true example of the present invention yet more than 2.Describe in detail again, each face of screen form 2 fixed support devices 35 and or above-mentioned resiliency supported device 30 in, just can guarantee screen 25 reliability of fixation.And, at least 2 faces of screen, respectively be provided with the facility that a pair of fixed support device 35 reaches or above-mentioned resiliency supported device 30 is just promoted operation.In addition, above-mentioned screw 40, spring 45 do not produce under the condition in gap between screen 25 and protecgulum 20, can adopt a plurality ofly, establish a capital and will show and differ on drawing.
Below when various piece described in detail, formation of the present invention and effect are described in detail.
Fig. 5 is the plan structure schematic diagram of fixed support device of the present invention, and Fig. 6 is the main TV structure schematic diagram of fixed support device of the present invention, and Fig. 7 is the side-looking structural representation of fixed support device of the present invention.
Describing fixed support device of the present invention with reference to Fig. 5 to Fig. 7 is to form by being in the 1st stationary plane 36 of upper-lower position and adding pressure surface 37 in the 1st of the 1st stationary plane 36 twice crooked and pressing spring 45 of forming with above-mentioned guide ledges 21.
On above-mentioned the 1st stationary plane 36, make the slotted hole corresponding 38. above-mentioned slotted holes and do ovalisation, so when the installation position of said fixing eyelid retractor 35 is equipped with gap, do not influence the insertion assembling of screw to a direction with the screwed hole of guide ledges 21.
Add below the pressure surface 37 in order to determine the position of spring 45 the above-mentioned the 1st, on the position of regulation, make the 1st spring guide ledges 39.Insert spring 45 in the outside of above-mentioned the 1st spring guide ledges 39, thereby make having determined that the position of above-mentioned spring 45 can be stable.
On the one hand, above-mentioned slotted hole 38 and above-mentioned the 1st spring guide ledges 39 are lateral alignment on fixed support device 35, so fixedly during fixed support device 35, can keep unified dynamics to be added on the spring with screw 40.If above-mentioned slotted hole 38 and above-mentioned the 1st position of spring guide ledges 39 on fixed support device 35 are not lateral alignment, the power that the small distortion of fixed support device 35 also causes being added on the spring has weakened.
Fig. 8 is the plan structure schematic diagram of resiliency supported device of the present invention, and Fig. 9 is the main TV structure schematic diagram of resiliency supported device of the present invention, and Figure 10 is the side-looking structural representation of resiliency supported device of the present invention.
Illustrate that to Figure 10 resiliency supported device 30 of the present invention is by corresponding with above-mentioned guide ledges 21 with reference to Fig. 8, and the 2nd stationary plane 31 of guiding resiliency supported device 30 positions and on the 2nd stationary plane 31 2 bendings form, and can the 2nd be added pressure surface 32 and form by what spring 45 pressurizeed.
On the 2nd above-mentioned stationary plane 31, make the installing hole 33 that is inserted in above-mentioned guide ledges 21 peripheries.The diameter of above-mentioned installing hole 33 is made that diameter with guide ledges is complementary or is more bigger, and very stable the packing into of resiliency supported device 30 put in place.
Add above the pressure surface 32 the above-mentioned the 2nd,, on the position of regulation, make the 2nd spring guide ledges of up protruding 34 in order to ajust the position of spring.Spring 45 is loaded onto in the outside in the 2nd above-mentioned spring guide ledges 34, so stable the packing into of lower position of above-mentioned spring 45 puts in place.
Figure 11 is by screen support structure decomposition texture schematic diagram of the present invention.
Describing screen support structure of the present invention with reference to Figure 11 is by the protecgulum 20 at the bottom, be placed on protecgulum 20 installed surfaces 22 screen 25 all around, the resiliency supported device of on screen 25, placing 30, at the spring 45 and the fixed support device 35 that is pressed in above-mentioned spring upside of above-mentioned resiliency supported device 30 upsides, reach the screw 40 that said fixing eyelid retractor 35 is fixed on the protecgulum 20 and form.
Be described in detail the whole of above-mentioned screen 25 again and be placed on the installed surface 22 of protecgulum 20 all around, so the position of fixing whole screen 25 that can be firm.
Further specifying installing hole 33 again has the insertion of certain interval with respect to the outer circumference diameter of above-mentioned guide ledges 21, thus above-mentioned resiliency supported device 30, can the easy on and off activity.
Above-mentioned spring 45 is to determine the position by the 1st spring guide ledges 39 of upper and lower end parts and the 2nd spring boss 34, so said fixing eyelid retractor 35 added pressure are added on the above-mentioned resiliency supported device 30 stably.
Above-mentioned slotted hole 38 is the screwed holes corresponding to above-mentioned guide ledges 21 inside, and above-mentioned screw 40 is by above-mentioned slotted hole 38 inside, on the position that is fixed on above-mentioned protecgulum 20 that above-mentioned fixedly supporter 35 is accurate and firm.
Figure 12 is the assembly structure schematic diagram by screen support structure of the present invention.
Describe with reference to Figure 12,, add pressure surface 37 by means of the above-mentioned the 1st and be pressurized on the spring 45, and above-mentioned spring 45 is pressed onto the 2nd again and adds on the pressure surface 32 when above-mentioned fixedly supporter 35 by guide ledges 21 and fixedly the time.As a result, the above-mentioned the 2nd adds pressure surface 32 and is pressurized to screen 25 and has fixed screen 25.In addition, among general environment, yellow 45 certain recuperability F compress screen 25 by above-mentioned bullet, like this, can't produce the gap between screen 25 and the installed surface 22, so can obtain intact fixing.
If under hot environment, when above-mentioned screen 25 produced thermal expansions, 25 of screens can overcome and add by the above-mentioned the 2nd that pressure surface 32 is added to the recuperability F on the screen 25 or the Mo Chali that causes because of above-mentioned recuperability F expands.Illustrational words when screen 25 thermal expansions, on installed surface, make screen 25 elongated within certain length range L.At this moment, resiliency supported device 30 is support screen 25 within the scope of the recuperability F of spring or the Mo Chali that caused by recuperability F just, and screen 25 thermal expansion forces that surpass this scope just do not stop.That is to say that above-mentioned resiliency supported device 30 can move by easy on and off, and keep guide effect, so in case than big the time, just making screen 25 easy to be mobile by the added power of spring by the recuperability F of spring 45.
If opposite, the screen 25 under low temperature environment produces convergent force and is out of shape is a reason.
As described above, because above-mentioned screen 25 does not produce deflection deformation, so under rugged environment (as hot environment), can not draw a portrait the deterioration of quality yet.
On the one hand, because above-mentioned spring 45, so long as it is just passable to be added to the material that can produce elastic force on the fixed support device 35, thus can illustrated spring, and replace also harmless with the material of the structure of various ways such as sponge rubber, leaf spring.
On the other hand, above-mentioned screen 25 is if wish to keep its position under bigger pressure, as long as it is just passable that the fixed support device is moved down, contracts spring 45 multiple pressures just passable exactly.That is to say that screen 25 wishes to keep its position under bigger pressure, it is just passable that spring 45 multiple pressures are contracted, for this reason, shorten guide ledges 21 height or above-mentioned fixed support device 35 do greatly any etc. method all be fine.
Claims (10)
1, a kind of screen support structure of rear-projection TV is characterized in that the protecgulum that has installed surface by making; With the screen that places all around on the above-mentioned installed surface; On the medial surface of above-mentioned protecgulum, be provided with a plurality of outstanding guide ledges; Be sleeved on the above-mentioned guide ledges and play the position guide effect, and make bending shape add pressure surface and the above-mentioned contacted resiliency supported device of screen; Add recuperability in the above-mentioned spring that adds pressure surface; Be fixed in above-mentioned guide ledges and make bending-type and add the fixed support device that pressure surface stresses on the described spring and form.
2, supporting construction according to claim 1 is characterized in that the one side of above-mentioned resiliency supported device is provided with the spring guide ledges of fixing above-mentioned spring position.
3, supporting construction according to claim 1 is characterized in that the one side of described fixed support device is provided with the spring guide ledges of fixing described spring position.
4, supporting construction according to claim 1 is characterized in that described guide ledges, for fixing said fixing eyelid retractor, makes screwed hole thereon;
On the said fixing eyelid retractor, be provided with and the corresponding another kind of hole of above-mentioned screwed hole; And the screw of above-mentioned screwed hole of insertion and slotted hole.
5, supporting construction according to claim 4 is characterized in that the hole that described fixed support device is provided with is the slotted hole that extends to a direction for the ease of installing.
6, supporting construction according to claim 1 is characterized in that the contact-making surface of described fixed support device, resiliency supported device and screen is made horizontal plane parallel to each other.
7, supporting construction according to claim 1 is characterized in that being the position of fixing spring on described fixed support device, the resiliency supported device, and then guarantees the stable recuperability that is added on above-mentioned spring, makes the spring guide ledges on above-mentioned eyelid retractor.
8, a kind of screen support structure of rear-projection TV, it is characterized in that by around be placed on the screen of the installed surface of protecgulum;
Under the condition that can relatively move, support the resiliency supported device of above-mentioned screen for above-mentioned screen;
To the relatively-stationary fixed support device of above-mentioned protecgulum energy; And comprise and being sandwiched between said fixing eyelid retractor and the resiliency supported device, and can stress on resiliency supported device recuperability, keep the spring of screen position by this recuperability again.
9, supporting construction according to claim 8 is characterized in that also being included as the spring guide ledges of determining spring position.
10, supporting construction according to claim 8 is characterized in that above-mentioned recuperability is that the size of leaning on above-mentioned fixed support device to be added on the amount of contraction of spring is regulated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410082836 CN1783977A (en) | 2004-12-03 | 2004-12-03 | Screen support structure of rear projection TV set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410082836 CN1783977A (en) | 2004-12-03 | 2004-12-03 | Screen support structure of rear projection TV set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1783977A true CN1783977A (en) | 2006-06-07 |
Family
ID=36773679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410082836 Pending CN1783977A (en) | 2004-12-03 | 2004-12-03 | Screen support structure of rear projection TV set |
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| Country | Link |
|---|---|
| CN (1) | CN1783977A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9501104B2 (en) | 2013-09-23 | 2016-11-22 | Xiaomi Inc. | Invisible screw device and fastening method, and terminal using same |
-
2004
- 2004-12-03 CN CN 200410082836 patent/CN1783977A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9501104B2 (en) | 2013-09-23 | 2016-11-22 | Xiaomi Inc. | Invisible screw device and fastening method, and terminal using same |
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