CN1197225A - Projecting head mechanism of projector - Google Patents
Projecting head mechanism of projector Download PDFInfo
- Publication number
- CN1197225A CN1197225A CN 97110760 CN97110760A CN1197225A CN 1197225 A CN1197225 A CN 1197225A CN 97110760 CN97110760 CN 97110760 CN 97110760 A CN97110760 A CN 97110760A CN 1197225 A CN1197225 A CN 1197225A
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- CN
- China
- Prior art keywords
- projection lens
- loam cake
- projector
- head mechanism
- projecting head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
A project head for projector features that there is a metal foil in it for conducting heat and a layer of thermally conducting silicon ester is coated on one surface of projecting lens. As a result, the heat generated when projecting lens receives light beam can be uniformly and quickly diffused on the all surface of projecting lens, other than a small area, preventing it cracking.
Description
The present invention relates to projector, particularly relate to the projecting head mechanism of projector.
See also Fig. 1, wherein show a kind of traditional optical projector.Traditional optical projector generally comprises: a main body 10, and this main body 10 is provided with a document platform 101; One projecting head mechanism 11, projecting head mechanism 11 comprise a loam cake 111, a lower cover 112, a camera lens 113 and a projection lens 114.
In use, be positioned at and pass document platform 101 after light that the light source (not shown) of projector's main body 10 sent is collected by the optical devices of main body 10 (generally comprising a unshowned light harvesting glass and a spiral mirror) and be sent to that 113 pairs on camera lens is defocused to be projected to a screen by projection lens 114, be projected the image of file with demonstration.
When using projector, loam cake 111 is separated with lower cover 112, adjusts the position of loam cake 111 and just can adjust the position that image is projected screen.When not using projector, loam cake 111 will be closed in lower cover 112 so that prevent camera lens 113 and projection lens's 114 absorption dust.
When optical projector is used once again, user's power-on, light has been transmitted into projecting head mechanism 11 but under the situation that loam cake 111 and lower cover 112 are not opened, projection lens's 114 received light beams will concentrate on heat in the zonule of projection lens 114 because of being discharged immediately, produce internal stress so in tens of seconds to several minutes, understand Yin Gaowen in this zonule, thereby projection lens 114 is broken.
General manufacturer produces for preventing this situation; usually can be especially in the prompting of indicating similar " after power supply start; projection lens's lid must be opened to prevent that projection lens's sheet from breaking " and so on the operation instructions; or near the plastic cover the projection eyeglass, indicate to point out the user to note with printing, do not forget to raise projection lens's lid.In other words, but without any the method for head it off.
Therefore, the object of the invention provides a kind of projecting head mechanism that prevents to cause because of improper use the projector that projection lens breaks.
For achieving the above object, the invention provides a kind of projecting head mechanism of projector, it be utilize projector the light that light source sent and with one by the projection file image be projected to a screen, this projecting head mechanism comprises: a loam cake, it has an inside surface; One lower cover, it is articulated in described loam cake; One camera lens, it is arranged on and covers under described, with so that the image focusing; One projection lens, it is arranged on the described inside surface of described loam cake, in order to described image of being focused is reflexed to described screen; One heat-conductive assembly, it is arranged between the described inner face of described projection lens and described loam cake, uses so that the heat that light produces is evenly distributed in the surface of described projection lens.
Preferably, described heat-conductive assembly comprises: one is arranged on the metal forming between described projection lens and the described loam cake inner face; One is arranged between described loam cake inner face and the described metal forming so that described metal forming is attached to the flexible member of described projection lens; One is coated on the heat conduction silicon ester on described projection lens surface.
In projecting head mechanism of the present invention, adopted special heat-conductive assembly, thereby can make heat that light beam produces fast and be evenly distributed in whole projection head surface but not concentrate in the zonule, thereby can prevent that projection lens from breaking.
To describe the present invention in detail by a preferred embodiment of the present invention and accompanying drawing thereof below.
Fig. 1 shows a kind of traditional optical projector;
Fig. 2 is the decomposing schematic representation of a preferred embodiment of projecting head mechanism of the present invention.
See also Fig. 2, it is the decomposing schematic representation of a preferred embodiment of the present invention's projecting head mechanism.This projecting head mechanism comprises: a loam cake 21, and it has an inner face 211; One lower cover 22, it is articulated in loam cake 21 in known mode; One camera lens 23, it is arranged on the lower cover 22; One projection lens 24, it is arranged on the inner face 211 of loam cake 21 in known mode, one heat-conductive assembly 25, it is arranged between the inner face 211 and projection lens 24 of loam cake, in the present embodiment heat-conductive assembly 25 comprise one be arranged on metal forming 251 between projection lens 24 and the loam cake inner face 211, two be arranged between loam cake inner face 211 and the metal forming 251 with so that this metal forming 251 be attached to the flexible member 252 of projection lens 24 and be coated in projection lens's 24 lip-deep one deck heat conduction silicon esters 253.
When projection lens 24 receives light beam, the heat that the heat conduction silicon ester (silicon compound) 253 that is attached to the metal forming 252 of projection lens 24 and is coated on projection lens 24 surfaces will make light beam produce is distributed in projection lens 24 surfaces fast and equably but not concentrates on a zonule, thereby can prevent that projection eyeglass 24 from breaking.
The description of above it should be understood that preferred embodiment being done only is to play illustration, the present invention is not had any restriction.The modification of any equivalence of making within the scope of the present invention and change all should fall in the protection domain of claims.
Claims (2)
1. the projecting head mechanism of a projector, it is to utilize the light that light source sent of projector and be projected to a screen with one by the image of projection file, this projecting head mechanism comprises:
One loam cake, it has an inside surface;
One lower cover, it is articulated in described loam cake;
One camera lens, it is arranged on and covers under described, with so that the image focusing;
One projection lens, it is arranged on the described inside surface of described loam cake, in order to described image of being focused is reflexed to described screen;
One heat-conductive assembly, it is arranged between the described inner face of described projection lens and described loam cake, uses so that the heat that light produces is evenly distributed in the surface of described projection lens.
2. the projecting head mechanism of projector as claimed in claim 1 is characterized in that, described heat conduction means comprise:
One is arranged on the metal forming between described projection lens and the described loam cake inner face;
One is arranged between described loam cake inner face and the described metal forming so that described metal forming is attached to the flexible member of described projection lens;
One is coated on the heat conduction silicon ester on described projection lens surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97110760 CN1050202C (en) | 1997-04-18 | 1997-04-18 | Projecting head mechanism of projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97110760 CN1050202C (en) | 1997-04-18 | 1997-04-18 | Projecting head mechanism of projector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1197225A true CN1197225A (en) | 1998-10-28 |
| CN1050202C CN1050202C (en) | 2000-03-08 |
Family
ID=5171551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97110760 Expired - Fee Related CN1050202C (en) | 1997-04-18 | 1997-04-18 | Projecting head mechanism of projector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1050202C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102221770A (en) * | 2011-05-25 | 2011-10-19 | 苏州佳世达光电有限公司 | Lens cap device and projection machine |
| CN106249531A (en) * | 2016-09-19 | 2016-12-21 | 苏州佳世达光电有限公司 | A kind of ray machine module and projection arrangement |
-
1997
- 1997-04-18 CN CN 97110760 patent/CN1050202C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102221770A (en) * | 2011-05-25 | 2011-10-19 | 苏州佳世达光电有限公司 | Lens cap device and projection machine |
| CN102221770B (en) * | 2011-05-25 | 2013-06-26 | 苏州佳世达光电有限公司 | Lens cap device and projection machine |
| CN106249531A (en) * | 2016-09-19 | 2016-12-21 | 苏州佳世达光电有限公司 | A kind of ray machine module and projection arrangement |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1050202C (en) | 2000-03-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |