CN103976820A - Electric welding mask and driving circuit thereof - Google Patents
Electric welding mask and driving circuit thereof Download PDFInfo
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- CN103976820A CN103976820A CN201410182877.7A CN201410182877A CN103976820A CN 103976820 A CN103976820 A CN 103976820A CN 201410182877 A CN201410182877 A CN 201410182877A CN 103976820 A CN103976820 A CN 103976820A
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- liquid crystal
- crystal light
- light valve
- drive circuit
- light valves
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Abstract
The invention provides an electric welding mask and a driving circuit thereof. The driving circuit is respectively connected with at least two LCLV (Liquid Crystal Light Valves) and is used for respectively supplying driving voltage to the at least two LCLV so as to control the LCLV to be simultaneously or partially in a dark state, thus different driving voltage can be supplied to different LCLV, a total penetration rate of the electric welding mask is enabled to be up to a penetration rate range which accords to the requirement most, the optical performance of the electric welding mask is increased, and eyes of an operator can be better protected.
Description
Technical field
The present invention relates to electric welding technical field, more particularly, relate to a kind of electric welder's helmet and drive circuit thereof.
Background technology
Electro-welding arc mainly comprises infrared ray, luminous ray and ultraviolet, and it is very large to the injury of eye, even can cause blind; therefore; operating personnel, when welding, just needs distribution electric welder's helmet, and what on electric welder's helmet, play protection eyes effect is exactly liquid crystal light valve.
When carrying out electric welding field; when high strength electro-welding arc causes, can control liquid crystal light valve in dark state by control circuit, make electro-welding arc part enter human eye by liquid crystal light valve; by liquid crystal light valve, high light is changed for fill light, thereby played the effect of protecting human eye.But current electric welder's helmet optical property is poor, can not protect well operating personnel's eyes.
Summary of the invention
In view of this, the invention provides a kind of electric welder's helmet and drive circuit thereof, poor to solve in prior art the optical property of electric welder's helmet, can not protect well the problem of operating personnel's eyes.
For achieving the above object, the invention provides following technical scheme:
A drive circuit, is connected respectively with at least two liquid crystal light valves, for providing respectively voltage to described at least two liquid crystal light valves, to control described liquid crystal light valve while or part in dark state.
Preferably, described at least two liquid crystal light valves are two liquid crystal light valves.
Preferably, described two liquid crystal light valves comprise the first liquid crystal light valve and the second liquid crystal light valve parallel with one another or series connection.
Preferably, described drive circuit comprises the first drive circuit being connected with described the first liquid crystal light valve and the second drive circuit being connected with described the second liquid crystal light valve.
Preferably, described the first drive circuit provides voltage to described the first liquid crystal light valve, controls the bright dark of described the first liquid crystal light valve; Described the second drive circuit provides voltage to described the second liquid crystal light valve, controls the bright dark of described the second liquid crystal light valve.
An electric welder's helmet, comprises at least two liquid crystal light valves, also comprises:
The drive circuit that as above and described at least two liquid crystal light valves are connected respectively, for providing voltage to described a plurality of liquid crystal light valves respectively, to control described liquid crystal light valve while or part in dark state.
Preferably, described at least two liquid crystal light valves and white glass and optical filter fit together.
Preferably, described white glass and optical filter lay respectively at the both sides of adjacent described at least two liquid crystal light valves.
Preferably, described at least two liquid crystal light valves are two liquid crystal light valves, comprise the first liquid crystal light valve and second liquid crystal light valve of parallel connection or series connection.
Preferably, when described at least two liquid crystal light valves are two liquid crystal light valves, described drive circuit comprises the first drive circuit being connected with described the first liquid crystal light valve and the second drive circuit being connected with described the second liquid crystal light valve, wherein, described the first drive circuit provides voltage to described the first liquid crystal light valve, controls the bright dark of described the first liquid crystal light valve; Described the second drive circuit provides voltage to described the second liquid crystal light valve, controls the bright dark of described the second liquid crystal light valve.
Compared with prior art, technical scheme provided by the present invention has the following advantages:
Electric welder's helmet provided by the present invention and drive circuit thereof; this drive circuit is connected respectively with at least two liquid crystal light valves; different driving voltages can be provided for different liquid crystal light valves; thereby make the overall transmitance of electric welder's helmet reach the most satisfactory transmitance scope; and then improved the optical property of electric welder's helmet, can protect better operating personnel's eyes.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The panel construction schematic diagram of the electric welding panel that Fig. 1 provides for the embodiment of the present invention two.
The specific embodiment
As described in background; current electric welder's helmet enters the power of the electro-welding arc of human eye by the bright dark control of liquid crystal light valve; but; when existing electric welder's helmet only adopts single liquid crystal light valve; its transmitance can not meet the transmitance scope of the CE standard of European Union; the optical property of this kind of electric welder's helmet is poor, can not protect well the requirement of operating personnel's eyes.
Although there has been the electric welder's helmet that adopts two liquid crystal light valves to improve optical property at present; but; it all adopts same driving voltage to drive two liquid crystal light valves; both the external same group of drive circuit of these two liquid crystal light valves, inputted same driving voltage by drive circuit and drove the function that realizes protection eyes.Inventor studies discovery, although the liquid crystal light valve of this mode can play viewing angle compensation effect, in the situation that form is constant, can make field range become more broad, but, for different liquid crystal light valves, adopt same driving voltage can not make the transmitance of electric welder's helmet meet the demands, therefore, its optical property can not meet the demands.
Based on this, the invention provides a kind of drive circuit, the problems referred to above that exist to overcome prior art, are connected respectively with at least two liquid crystal light valves, for providing respectively driving voltage to described at least two liquid crystal light valves, to control described liquid crystal light valve while or part in dark state.
The present invention also provides a kind of electric welder's helmet, comprise at least two liquid crystal light valves, also comprise: the drive circuit that as above and described at least two liquid crystal light valves are connected respectively, for providing driving voltage to described a plurality of liquid crystal light valves respectively, to control described liquid crystal light valve while or part in dark state.
Electric welder's helmet provided by the present invention and drive circuit thereof; this drive circuit is connected respectively with at least two liquid crystal light valves; different driving voltages can be provided for different liquid crystal light valves; thereby make the overall transmitance of electric welder's helmet reach the most satisfactory transmitance scope; and then improved the optical property of electric welder's helmet, can protect better operating personnel's eyes.
Be more than core concept of the present invention, for above-mentioned purpose of the present invention, feature and advantage can be become apparent more, below in conjunction with accompanying drawing, the specific embodiment of the present invention be described in detail.
A lot of details have been set forth in the following description so that fully understand the present invention, but the present invention can also adopt other to be different from alternate manner described here and implement, those skilled in the art can do similar popularization without prejudice to intension of the present invention in the situation that, so the present invention is not subject to the restriction of following public specific embodiment.
Secondly, the present invention is described in detail in conjunction with schematic diagram, when the embodiment of the present invention is described in detail in detail; for ease of explanation; the profile that represents device architecture can be disobeyed general ratio and be done local amplification, and described schematic diagram is example, and it should not limit the scope of protection of the invention at this.The three-dimensional space that should comprise in addition, length, width and the degree of depth in actual fabrication.
Below by several embodiment, describe in detail.
Embodiment mono-
The present embodiment provides a kind of drive circuit, is connected respectively, for providing respectively driving voltage to described at least two liquid crystal light valves, to control described liquid crystal light valve while or part in dark state with at least two liquid crystal light valves.When drive circuit provides driving voltage to all liquid crystal light valves simultaneously, all liquid crystal light valves are simultaneously in dark state, when drive circuit provides driving voltage to part liquid crystal light valve, not all liquid crystal light valve is all in dark state, but part liquid crystal light valve is in dark state.
Preferably, described at least two liquid crystal light valves are two liquid crystal light valves, and described two liquid crystal light valves are the first liquid crystal light valve and the second liquid crystal light valve parallel with one another or series connection.Now, described drive circuit comprises the first drive circuit being connected with described the first liquid crystal light valve and the second drive circuit being connected with described the second liquid crystal light valve, wherein, described the first drive circuit provides driving voltage to described the first liquid crystal light valve, controls the bright dark of described the first liquid crystal light valve; Described the second drive circuit provides driving voltage to described the second liquid crystal light valve, controls the bright dark of described the second liquid crystal light valve.
For different liquid crystal light valves, its driving voltage needing is different, and the size of liquid crystal light valve is larger, and driving voltage is higher.Adopt two liquid crystal light valves that same driving voltage drives when the optimal drive voltage of two liquid crystal light valves is different, between this driving voltage and the optimal drive voltage of liquid crystal light valve, there is certain pressure reduction, and in order to make the transmitance of two liquid crystal light valves reach best, the scope of general selection pressure reduction is 0.1V～1.5V, and this has just limited the application of plurality of liquid crystals light valve in electric welder's helmet.
And in the present embodiment, between described at least two liquid crystal light valves, be parallel with one another or series connection, the mode of its connection can be set according to concrete application.And, the first drive circuit being connected with the first liquid crystal light valve, and can be also connected mode in parallel or series connection between the second drive circuit being connected with the second liquid crystal light valve, its concrete connected mode can specifically be set according to the connected mode between liquid crystal light valve.
Because the drive circuit in the present embodiment is connected with liquid crystal light valve respectively, therefore, it can provide for different liquid crystal light valves different voltage, be that it can not provide optimal drive voltage for it according to the different qualities of different liquid crystal light valves when making alive (transmitance), this optimal drive voltage refers to the farthest voltage of adjustable liquid crystal display light valve transmitance, it can reach the most satisfactory transmitance scope by the transmitance of liquid crystal light valve, thereby can make the transmitance of different liquid crystal light valves all reach the most satisfactory transmitance scope, and then make the overall transmitance of electric welder's helmet reach the most satisfactory transmitance scope.Wherein, in the CE standard of the most satisfactory transmitance scope Shi Cong European Union, obtain, certainly, also can from American Standard, Australia's mark, obtain.Hence one can see that, the drive circuit that the present embodiment provides, the liquid crystal light valve that can be respectively different provides voltage, thereby the problem of having avoided the pressure reduction between liquid crystal light valve driving voltage not meet the demands, when selecting liquid crystal light valve, can consider the pressure reduction between liquid crystal light valve, thereby expand the Application Range of liquid crystal light valve in electric welding panel.
The drive circuit that the present embodiment provides; be connected respectively with at least two liquid crystal light valves; different driving voltages can be provided for different liquid crystal light valves; thereby make the overall transmitance of electric welder's helmet reach the most satisfactory transmitance scope; and then improved the optical property of electric welder's helmet, can protect better operating personnel's eyes.
Embodiment bis-
The present embodiment provides a kind of electric welder's helmet, comprise at least two liquid crystal light valves, be preferably two liquid crystal light valves, these two liquid crystal light valves are measure-alike, and fit together with white glass and optical filter, described white glass and optical filter lay respectively at the both sides of adjacent described two liquid crystal light valves, and as shown in Figure 1, white glass 101 and optical filter 102 lay respectively at the both sides of liquid crystal light valve 103 and 104.
Electric welder's helmet in the present embodiment also comprises the drive circuit that embodiment mono-provides, the drive circuit being connected respectively with described at least two liquid crystal light valves, for providing driving voltage to described a plurality of liquid crystal light valves respectively, to control described liquid crystal light valve while or part in dark state.
When described at least two liquid crystal light valves are two liquid crystal light valves, described drive circuit comprises the first drive circuit being connected with described the first liquid crystal light valve and the second drive circuit being connected with described the second liquid crystal light valve, wherein, described the first drive circuit provides driving voltage to described the first liquid crystal light valve, controls the bright dark of described the first liquid crystal light valve; Described the second drive circuit provides driving voltage to described the second liquid crystal light valve, controls the bright dark of described the second liquid crystal light valve.
And in the present embodiment, be parallel with one another or series connection between at least two liquid crystal light valves, the mode of its connection can be set according to concrete application.And, the first drive circuit being connected with the first liquid crystal light valve, and can be also connected mode in parallel or series connection between the second drive circuit being connected with the second liquid crystal light valve, its concrete connected mode can specifically be set according to the connected mode between liquid crystal light valve.
Because the drive circuit in the present embodiment is connected with liquid crystal light valve respectively, therefore, it can provide for different liquid crystal light valves different voltage, be that it can not provide optimal drive voltage for it according to the different qualities of different liquid crystal light valves when making alive (transmitance), this optimal drive voltage refers to the farthest voltage of adjustable liquid crystal display light valve transmitance, it can reach the most satisfactory transmitance scope by the transmitance of liquid crystal light valve, thereby can make the transmitance of different liquid crystal light valves all reach the most satisfactory transmitance scope, and then make the overall transmitance of electric welder's helmet reach the most satisfactory transmitance scope.Wherein, in the CE standard of the most satisfactory transmitance scope Shi Cong European Union, obtain, certainly, also can from American Standard, Australia's mark, obtain.
The electric welder's helmet that the present embodiment provides; its drive circuit is connected respectively with at least two liquid crystal light valves; can provide different driving voltages for described at least two different liquid crystal light valves; thereby make the overall transmitance of electric welder's helmet reach the most satisfactory transmitance scope; and then improved the optical property of electric welder's helmet, can protect better operating personnel's eyes.
In this description, each embodiment adopts the mode of going forward one by one to describe, and each embodiment stresses is the difference with other embodiment, between each embodiment identical similar part mutually referring to.For the disclosed device of embodiment, because it corresponds to the method disclosed in Example, so description is fairly simple, relevant part partly illustrates referring to method.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the present invention.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a drive circuit, is characterized in that, is connected respectively, for providing respectively driving voltage to described at least two liquid crystal light valves, to control described liquid crystal light valve while or part in dark state with at least two liquid crystal light valves.
2. drive circuit according to claim 1, is characterized in that, described at least two liquid crystal light valves are two liquid crystal light valves.
3. drive circuit according to claim 2, is characterized in that, described two liquid crystal light valves comprise the first liquid crystal light valve and second liquid crystal light valve of parallel connection or series connection.
4. drive circuit according to claim 3, is characterized in that, described drive circuit comprises the first drive circuit being connected with described the first liquid crystal light valve and the second drive circuit being connected with described the second liquid crystal light valve.
5. drive circuit according to claim 4, is characterized in that, described the first drive circuit provides driving voltage to described the first liquid crystal light valve, controls the bright dark of described the first liquid crystal light valve; Described the second drive circuit provides driving voltage to described the second liquid crystal light valve, controls the bright dark of described the second liquid crystal light valve.
6. an electric welder's helmet, comprises at least two liquid crystal light valves, it is characterized in that, also comprises:
As described in claim 1-5 any one with as described at least two drive circuits that liquid crystal light valve is connected respectively, for providing driving voltage to described a plurality of liquid crystal light valves respectively, with control described liquid crystal light valve simultaneously or part in dark state.
7. electric welder's helmet according to claim 6, is characterized in that, described at least two liquid crystal light valves and white glass and optical filter fit together.
8. electric welder's helmet according to claim 7, is characterized in that, described white glass and optical filter lay respectively at the both sides of adjacent described at least two liquid crystal light valves.
9. electric welder's helmet according to claim 8, is characterized in that, described at least two liquid crystal light valves are two liquid crystal light valves, comprises the first liquid crystal light valve and second liquid crystal light valve of parallel connection or series connection.
10. electric welder's helmet according to claim 9, it is characterized in that, when described at least two liquid crystal light valves are two liquid crystal light valves, described drive circuit comprises the first drive circuit being connected with described the first liquid crystal light valve and the second drive circuit being connected with described the second liquid crystal light valve, wherein, described the first drive circuit provides driving voltage to described the first liquid crystal light valve, controls the bright dark of described the first liquid crystal light valve; Described the second drive circuit provides driving voltage to described the second liquid crystal light valve, controls the bright dark of described the second liquid crystal light valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410182877.7A CN103976820A (en) | 2014-04-30 | 2014-04-30 | Electric welding mask and driving circuit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410182877.7A CN103976820A (en) | 2014-04-30 | 2014-04-30 | Electric welding mask and driving circuit thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103976820A true CN103976820A (en) | 2014-08-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410182877.7A Pending CN103976820A (en) | 2014-04-30 | 2014-04-30 | Electric welding mask and driving circuit thereof |
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| CN (1) | CN103976820A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2151732Y (en) * | 1993-01-12 | 1994-01-05 | 陈柏兴 | Blackness adjustable electronic auto welding colour filter glass |
| CN2177464Y (en) * | 1993-11-12 | 1994-09-21 | 河南省高技术创业服务中心 | Light-controlled electronic goggles for electric welding |
| KR100381547B1 (en) * | 1999-11-23 | 2003-04-26 | 주식회사오토스광학 | Glare shielding device of welding helmet and control method thereof |
| CN201453486U (en) * | 2009-06-27 | 2010-05-12 | 山西平阳重工机械有限责任公司 | Novel welding protection mask |
| CN101825774A (en) * | 2010-03-29 | 2010-09-08 | Tcl集团股份有限公司 | System and method for processing 3D images |
| CN102204855A (en) * | 2011-05-18 | 2011-10-05 | 刘勇 | Novel welding protection mask |
| CN202631942U (en) * | 2012-01-06 | 2012-12-26 | 深圳秋田微电子有限公司 | Double-liquid-crystal light-valve single-projector type stereo projection system and projector |
-
2014
- 2014-04-30 CN CN201410182877.7A patent/CN103976820A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2151732Y (en) * | 1993-01-12 | 1994-01-05 | 陈柏兴 | Blackness adjustable electronic auto welding colour filter glass |
| CN2177464Y (en) * | 1993-11-12 | 1994-09-21 | 河南省高技术创业服务中心 | Light-controlled electronic goggles for electric welding |
| KR100381547B1 (en) * | 1999-11-23 | 2003-04-26 | 주식회사오토스광학 | Glare shielding device of welding helmet and control method thereof |
| CN201453486U (en) * | 2009-06-27 | 2010-05-12 | 山西平阳重工机械有限责任公司 | Novel welding protection mask |
| CN101825774A (en) * | 2010-03-29 | 2010-09-08 | Tcl集团股份有限公司 | System and method for processing 3D images |
| CN102204855A (en) * | 2011-05-18 | 2011-10-05 | 刘勇 | Novel welding protection mask |
| CN202631942U (en) * | 2012-01-06 | 2012-12-26 | 深圳秋田微电子有限公司 | Double-liquid-crystal light-valve single-projector type stereo projection system and projector |
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Application publication date: 20140813 |