CN2127306Y - Automatic changing colour mask having observation hole - Google Patents
Automatic changing colour mask having observation hole Download PDFInfo
- Publication number
- CN2127306Y CN2127306Y CN 92208039 CN92208039U CN2127306Y CN 2127306 Y CN2127306 Y CN 2127306Y CN 92208039 CN92208039 CN 92208039 CN 92208039 U CN92208039 U CN 92208039U CN 2127306 Y CN2127306 Y CN 2127306Y
- Authority
- CN
- China
- Prior art keywords
- liquid crystal
- glass
- control circuit
- switch
- peephole
- 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
Links
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- Liquid Crystal (AREA)
Abstract
The utility model relates to an automatic color changing and shading welding mask having an observation hole, which is composed of a photoelectric tube, a switch-operated response control, a control circuit, liquid crystal discoloration glass, etc., wherein, the control circuit is a special integrated chip; the liquid crystal discoloration glass is reformed by an original liquid crystal display; the liquid crystal discoloration glass adopts the observation hole arranged on the upper edge of a black glass of an original mask instead of manufacturing liquid crystal chips in large area, and thus, the utility model is economic and reliable and can be regulated to fit arc light of different brightness.
Description
The appliances for labor protection of shading light when this utility model is used for arc welding.
Thermoluminescence welding cutting is that the large-area liquid crystal photo chromic glass is as the protective cover glass screen with protecting mask (CN2071312) employing in the prior art, only adopt photocell element at control section, and do not adopted switch-operated response control and other control circuit part; Welding also is to have adopted the large-area liquid crystal photo chromic glass to make the protective cover glass screen with automatic sunscreen protection device (CN2032869); though this technology adopts sensitivity adjusting and other control circuit on circuit and the protective roof structure more complicated all; the result that above-mentioned technology produced is that self-control large-area liquid crystal photo chromic glass quality does not reach the needed technical standard of weldering cover; vision to the welder can not play the effect of protection fully; and large-area liquid crystal photo chromic glass cost is too high, and is very uneconomical.
In order to solve the problem of above-mentioned existence; this utility model has designed a kind of peephole shape automatic color-changing electric welding helmet; liquid crystal color-changing glass is to have adopted the LCD panel transformation of the way in the common liquid crystals display to form; it is placed on the former electric welding helmet filter glass with the peephole form; in control circuit, have special integrated chip and switch-operated response control, make protective cover under varying strength light, can both play due function.
To achieve these goals, the design of this technology is: by shade (1), filter glass (2), handle (3), liquid crystal color-changing glass (4), photocell (5), switch-operated response control (6), control circuit (7), power supply (8), switch (9), lead (10) is formed, photocell (5) wherein, switch-operated response control (6), control circuit (7), power supply (8) is installed on the printed circuit board (11), it is characterized in that control circuit (7) is a special integrated chip, liquid crystal color-changing glass (4) is to be that the enlarged areas of black part is to all over the screen made by again that it is the shown numeral of reflective foil that the common liquid crystals display takes down the back side.Described special integrated chip can be the secondary integrated circuit, comprises amplifier BG, agitator IC1, IC2, driver IC 3 three parts.Liquid crystal color-changing glass (4) can be peephole shape and the position that is positioned at former electric welding helmet filter glass (a 2) top edge left side or the right.The welder feels also black not enough of liquid crystal color-changing glass in use, and protective cover can being moved up slightly, eyes just utilize the filter glass on the protective cover to block fully.
Fig. 1, be this utility model overall structure sketch map.
Fig. 2, be the integrally-built side view of this utility model.
Fig. 3, be this utility model circuit block diagram.
Fig. 4, be this utility model circuit diagram.
This utility model has been owing to adopted to add at former protective cover filter glass and can clearly see weld seam clearly when a peephole shape small size liquid crystal color-changing glass comes as the welder in electric welding, rather than adopts the large-area liquid crystal sheet. This liquid-crystalline glasses is to utilize specialized factory to manufacture the used LCD panel transformation of the way of display to form in addition, and is in quality reliably many than manufacturing the large-area liquid crystal sheet, also reduced widely product cost simultaneously.
The control circuit that the utility model has also adopted switch-operated response control, amplifier, oscillator and driver to consist of is so can regulate the arclight that adapts to various different brightness. Also utilized the black glass on the former protective cover, when the workpiece of needs welderings quite thick, in the very strong situation of arc light; peephole glass does not reach certain black degree of being; the welder is as long as slightly move up protective cover, and eyes just can be subjected to the protection of black glass fully, reach due effect.
Illustrate in conjunction with Fig. 1 to Fig. 4 that embodiment of the present utility model: Fig. 1 to Fig. 2 has described black glass (2) is housed on the protective cover (1); peephole shape liquid crystal display glass (4) is embedded in the liquid crystal cell; with screw liquid crystal cell is fixed on a left side that filter glass (2) top edge tightly cuts or the position on the right; be to be contained in the requirement of a left side or the right according to the user, the situation of workman's vision and determining.The another side of liquid crystal cell is pulled (11) and is screwed and is in the same place with printed circuit.Shown in Fig. 3,4: after photocell (5) receives behind the high light that this signal delivered to switch-operated response control (6) carries out sensitivity adjustment, again signal is delivered to control circuit (7), (just in the integrated chip), deliver to the agitator of forming by IC1, IC2 after by the BG audion signal being amplified, make it to produce square wave and deliver to driver IC 3, IC3 drives liquid crystal display screen (4) blackening by partiting dc capacitor C2.Wherein photocell (5), switch-operated response control (6), control circuit (7), power supply (8) are fixed on the same printed circuit board (PCB) (11) with electrically connected method.Control circuit (7) is by amplifier BG, agitator IC1, IC2, and driver IC 3 three parts are formed.Switch (9) is installed on the handle (3).A lead in the lead (10) links to each other an end of switch and an end of power supply, and another root lead makes switch link to each other with printed circuit board (PCB).
After manual switch (7) closure, photocell (5) meets high light, its resistance sharply descends, continue after deliver to amplifier after the switch-operated response control sampling, amplifier output signal comes driving oscillator work to produce square wave, by peephole shape liquid crystal display glass (4) blackening that driver drives is changed system into, reaching the purpose of resistance light, general liquid crystal display glass can be with several pieces overlapping forming.
Claims (3)
1, a kind of peephole formula automatic color-changing electric welding helmet, by shade (1), filter glass (2), handle (3), liquid crystal color-changing glass (4), photocell (5), switch-operated response control (6), control circuit (7), power supply (8), switch (9), lead (10) is formed, photocell (5) wherein, switch-operated response control (6), control circuit (7), power supply (8) is installed on the printed circuit board (11), it is characterized in that control circuit (7) is a special integrated chip, liquid crystal color-changing glass (4) is to be that the enlarged areas of black part is to all over the screen made by again that it is the shown numeral of reflective foil that the common liquid crystals display takes down the back side.
2, a kind of peephole formula automatic color-changing electric welding helmet according to claim 1 is characterized in that described liquid crystal color-changing glass (4) can be peephole shape and the position that is positioned at former electric welding helmet filter glass (a 2) top edge left side or the right.
3, a kind of peephole formula automatic color-changing electric welding helmet according to claim 1 is characterized in that described special integrated chip can be the secondary integrated circuit, comprises amplifier BG, agitator and IC3 driver that IC1, IC2 form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92208039 CN2127306Y (en) | 1992-04-22 | 1992-04-22 | Automatic changing colour mask having observation hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92208039 CN2127306Y (en) | 1992-04-22 | 1992-04-22 | Automatic changing colour mask having observation hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2127306Y true CN2127306Y (en) | 1993-02-24 |
Family
ID=33762333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92208039 Expired - Fee Related CN2127306Y (en) | 1992-04-22 | 1992-04-22 | Automatic changing colour mask having observation hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2127306Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111700729A (en) * | 2020-06-24 | 2020-09-25 | 张常财 | Steam eye-shade of recycling |
-
1992
- 1992-04-22 CN CN 92208039 patent/CN2127306Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111700729A (en) * | 2020-06-24 | 2020-09-25 | 张常财 | Steam eye-shade of recycling |
| CN111700729B (en) * | 2020-06-24 | 2022-08-16 | 浙江冠辉医疗科技有限公司 | Steam eye-shade of recycling |
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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 | ||
| 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 |