CN2187937Y - Selenium light auto-controlled colour-changing arc welding goggles - Google Patents
Selenium light auto-controlled colour-changing arc welding goggles Download PDFInfo
- Publication number
- CN2187937Y CN2187937Y CN 94228126 CN94228126U CN2187937Y CN 2187937 Y CN2187937 Y CN 2187937Y CN 94228126 CN94228126 CN 94228126 CN 94228126 U CN94228126 U CN 94228126U CN 2187937 Y CN2187937 Y CN 2187937Y
- Authority
- CN
- China
- Prior art keywords
- selenium
- liquid crystal
- light valve
- crystal light
- light
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a pair of selenium light auto-controlled colour-changing arc welding goggles, which comprises a goggle frame, shielding glass and a liquid crystal light valve. The utility model is characterized in that a selenium light battery sheet, a reflection type light filtering sheet and the liquid crystal light valve are arranged on the inner side of the shielding glass in sequence, and the selenium light battery sheet is connected with the liquid crystal light valve by a conducting wire. The utility model has the characteristics of simple structure, small volume, light weight, low cost, wide scope of application, simple and convenient installation and debugging, high safety, long service life, convenient use and maintenance, etc.
Description
This utility model belongs to labour safety articles, specifically a kind of Eye protector for welder.
Existing Eye protector for welder, except that traditional permanent colo(u)r filter formula, also have magnetoelectric induction control formula, photo-electric control formula liquid crystal light valve variable color protective eye lens etc. several, " light-operated automatic color-changing arc-welding helmet " (number of patent application is 932290779) of declaring in August, 93 comprising the applicant.More than several optically controlled liquid crystal light valve variable color protective eye lens, its control circuit is complex circuit mostly, the components and parts consumption is big, the cost height, accident point is many, installation and maintenance inconvenience.External dc power supply power supply especially all must be arranged, not only need often to change, and easily when running down of battery, maloperation causes the damage to operator's eyes.
The purpose of this utility model provides and does not a kind ofly need additional power source, and only uses the selenium sheet, has not only made photosensitive control element but also has made the selenium automatic control variable color arc-welding protective eye lens of power supply.
The purpose of this utility model is achieved in that it includes mirror holder, cover plate, liquid crystal light valve, it is characterized in that being disposed with selenium cell sheet, reflection optical filter, liquid crystal light valve in the inboard of cover plate, the selenium cell sheet links to each other with liquid crystal light valve by lead.Said selenium cell sheet is composed in series by 4-16 sheet selenium blade unit.During use, as long as produce arc light, the selenium cell sheet promptly produces photoelectric current, and the voltage that its placed in-line selenium cell sheet is produced starts liquid crystal light valve rapidly, makes it by the transparent black that becomes, and blocking harmful light is to the infringement of operator's eyes effectively.When the arc light disappearance, the photoelectric current of selenium sheet and voltage also disappear thereupon, and liquid crystal light valve recovers pellucidity.
The utility model has the advantages that: with the series connection of selenium cell sheet, promptly make photosensitive control element, make power supply again, thereby save other any control element and external battery.Placed in-line selenium sheet is subjected to the voltage superposition value behind the arc light, employing is higher than the threshold voltage of liquid crystal light valve, this just guarantees under the natural light condition, liquid crystal light valve is failure to actuate, remain pellucidity, and in case when the arc light direct projection is arranged, liquid crystal light valve promptly moves blackening rapidly up hill and dale, shorten the time delay of liquid crystal device effectively, improved the reaction sensitivity of liquid crystal light valve.Not only a large amount of components and parts have been saved but also reached the effect of getting twice the result with half the effort, therefore, the utlity model has the welding front and back and can both be certain about the characteristics of workpiece and weld seam, save the trouble that the operator often changes battery again, thereby alleviate operator's burden, improve work efficiency and welding quality, save the energy and welding rod.That this utility model also has is simple in structure, volume is little, in light weight, cost is low, applied widely, Installation and Debugging are easy, safe and reliable, characteristics such as the life-span long, working service is convenient.
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is a front of the present utility model schematic perspective view.
Fig. 2 is that vertical view cuts open in office of the present utility model.
Fig. 3 is a schematic diagram of the present utility model.
Shown in Fig. 1-3,1 is the polypropylene plastics mirror holder that adds long 108mm, the wide 50mm of fire retardant, the 2nd, the selenium cell sheet of forming by 12 selenium blade units, be connected to liquid crystal light valve after the series connection, both made photosensitive control element, make power supply again, this selenium cell sheet is arranged on the centre of cover plate inboard.The 3rd, adopt the orthogonal knockdown liquid crystal light valve in polarization direction, make it under the natural light condition, to be pellucidity, and action blackening rapidly after obtaining starting resistor reaches the injury that protection operator eyes are not subjected to harmful light.The 4th, the reflecting type optical filter is added in the front of LCD panel, makes it shielding of ultraviolet and infrared ray, thereby remedies the deficiency of liquid crystal light valve light transmittance properties according to national arc-welding protective eye lens standard.The 5th, the protective glass plate of common arc-welding helmet prevents sputter Mars damage LCD panel in the welding process, can change at any time.Operation principle of the present utility model shown in Figure 3 is: when the irradiation of no arc light promptly under natural light, the startup value of selenium cell no-voltage or voltage superposition value not enough liquid crystal light valve far away, liquid crystal light valve is failure to actuate, and is pellucidity.When arc light direct projection selenium cell; produce very big photoelectric current and enough starting resistors (the superimposed voltage virtual value can reach more than the 6V); and owing to the continuous altofrequency ground of arc light flashes; the selenium sheet also produces the altofrequency pulsating volage; this voltage starts light valve rapidly; LCD panel is by transparent blackening at once, and blocking harmful light plays effective protective effect to the infringement of operator's eyes.
Claims (4)
1, a kind of selenium automatic control variable color arc-welding protective eye lens, it includes mirror holder, cover plate, liquid crystal light valve, it is characterized in that being disposed with selenium cell sheet, reflection optical filter, liquid crystal light valve in the inboard of cover plate, the selenium cell sheet links to each other with liquid crystal light valve by lead.
2, arc-welding protective eye lens according to claim 1 is characterized in that the selenium cell sheet is composed in series by 4-16 sheet selenium blade unit.
3, arc-welding protective eye lens according to claim 1 and 2 is characterized in that the selenium cell sheet is arranged on the centre of cover plate inboard.
4, arc-welding protective eye lens according to claim 1, but it is characterized in that reflection optical filter is shielding of ultraviolet and ultrared reflection optical filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94228126 CN2187937Y (en) | 1994-03-25 | 1994-03-25 | Selenium light auto-controlled colour-changing arc welding goggles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94228126 CN2187937Y (en) | 1994-03-25 | 1994-03-25 | Selenium light auto-controlled colour-changing arc welding goggles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2187937Y true CN2187937Y (en) | 1995-01-25 |
Family
ID=33840732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94228126 Expired - Fee Related CN2187937Y (en) | 1994-03-25 | 1994-03-25 | Selenium light auto-controlled colour-changing arc welding goggles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2187937Y (en) |
-
1994
- 1994-03-25 CN CN 94228126 patent/CN2187937Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |