CN203279253U - Light-operated LED spring festival scroll - Google Patents
Light-operated LED spring festival scroll Download PDFInfo
- Publication number
- CN203279253U CN203279253U CN2013201487896U CN201320148789U CN203279253U CN 203279253 U CN203279253 U CN 203279253U CN 2013201487896 U CN2013201487896 U CN 2013201487896U CN 201320148789 U CN201320148789 U CN 201320148789U CN 203279253 U CN203279253 U CN 203279253U
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- resistance
- voltage comparator
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- led lamp
- led
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Abstract
The utility model discloses a light-operated LED spring festival scroll which comprises a wood board (1), an LED lamp (2), a photosensitive triode (3), a resistor (4), a voltage comparator (5), a resistor (6), a resistor (7) and a resistor (8). In the evening, the photosensitive triode (3) has a large resistance; a "+" input terminal of the voltage comparator (5) has a low electric potential; the voltage comparator (5) outputs a low level; and the LED lamp (2) gives out light so that the spring festival scroll is illuminated.
Description
Technical field
The utility model belongs to the daily necessities field, relates to a kind of light-operated LED new Year scroll.
Background technology
LED is the abbreviation of English light emitting diode (light-emitting diode); its basic structure is an electroluminescent semi-conducting material; be placed on a leaded shelf; then surrounding epoxy sealing; play the effect of protection internal core, so the anti-seismic performance of LED is good.The LED streetlamp energy-saving, the life-span is long, and applicability is good, because the volume of single LEDs is little, can make any shape.The LED lamp response time is short, be other response time of nanosecond, and ordinary lamp and lantern is other response time of Millisecond.The LED environmental protection, without poisonous metal, discarded object easily reclaims.Lucuriant in design, luminous color is pure, and spectral region is narrow, and can become seven coloured silks or white light by the red-green-blue colour mixture.Now widely used LED has three kinds of red, green, blues.LED operating voltage low (only 1.5-3V) can active illuminating and certain brightness is arranged, and brightness can be regulated with voltage (or electric current), shock-resistant, anti-vibration own.LED market has obtained swift and violent development in recent years, has been widely applied to the multiple occasions such as bank, post and telecommunications, the tax, airport, station, securities market, hospital, electric power, customs, stadium.
Phototriode is similar with common triode, and the electric current amplification is also arranged, and just its collector current just is not subjected to base circuit and Current Control, also is subjected to the control of light radiation simultaneously.Usually base stage is not drawn.
Voltage comparator can be regarded as multiplication factor near the operational amplifier of " infinity ".Voltage comparator is the size of two voltages relatively, when "+" input terminal voltage higher than "-" during input, voltage comparator is output as high level; When "+" input terminal voltage lower than "-" during input, voltage comparator is output as low level.Voltage comparator can be used as the interface of analog circuit and digital circuit, can also be as waveform generation and translation circuit etc.The voltage comparator input is linear amount, and output is switching value.In general the application, sometimes also can use linear operational amplifier, not add in degenerative situation, consist of voltage comparator and use.
Summary of the invention
The purpose of this utility model is to design a kind of simple in structure, light-operated LED new Year scroll that visual effect is good.
for achieving the above object, the utility model comprises: plank (1), LED lamp (2), phototriode (3), the first resistance (4), voltage comparator (5), the second resistance (6), the 3rd resistance (7), the 4th resistance (8), it is characterized in that: LED lamp (2) is fixed on plank (1) has the new Year scroll word in the localities, the quantity of LED lamp (2) is determined by what and size of word, the positive pole of LED lamp (2), the positive pole of phototriode (3), one end of the first resistance (4) is connected with positive source, the negative pole of phototriode (3), the other end of the first resistance (4) the 4th resistance (8) of connecting respectively, be connected with power cathode after the 3rd resistance (7), drawing wire between phototriode (3) and the 4th resistance (8) is connected with "+" input of voltage comparator (5), drawing wire between the first resistance (4) and the 3rd resistance (7) is connected with "-" input of voltage comparator (5), the negative pole of LED lamp (2) is connected respectively, and the second resistance (6) is rear to be connected with the output of voltage comparator (5).
Description of drawings
Fig. 1 light-operated LED new Year scroll structural representation;
Fig. 2 light-operated LED new Year scroll electrical block diagram;
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is illustrated.
Referring to Fig. 1, light-operated LED new Year scroll structural representation, LED lamp (2) is fixed on plank (1) has the new Year scroll word in the localities, and the quantity of LED lamp (2) is determined by what and size of word.
referring to Fig. 2, light-operated LED new Year scroll electrical block diagram, light-operated LED new Year scroll circuit is by LED lamp (2), phototriode (3), the first resistance (4), voltage comparator (5), the second resistance (6), the 3rd resistance (7), the 4th resistance (8) forms, the positive pole of LED lamp (2), the positive pole of phototriode (3), one end of the first resistance (4) is connected with positive source, the negative pole of phototriode (3), the other end of the first resistance (4) the 4th resistance (8) of connecting respectively, be connected with power cathode after the 3rd resistance (7), drawing wire between phototriode (3) and the 4th resistance (8) is connected with "+" input of voltage comparator (5), drawing wire between the first resistance (4) and the 3rd resistance (7) is connected with "-" input of voltage comparator (5), the negative pole of LED lamp (2) is connected respectively, and the second resistance (6) is rear to be connected with the output of voltage comparator (5).
During night, the resistance of phototriode (3) is large, and "+" input current potential of voltage comparator (5) is low, and voltage comparator (5) is output as low level, and LED lamp (2) is luminous, and new Year scroll are illuminated.The process on daytime is just in time opposite, and LED lamp (2) is not luminous, has saved electric energy.
Claims (1)
1. light-operated LED new Year scroll, it is characterized in that: the light-operated LED new Year scroll are by plank (1), LED lamp (2), phototriode (3), the first resistance (4), voltage comparator (5), the second resistance (6), the 3rd resistance (7), the 4th resistance (8) forms, LED lamp (2) has a plurality of, LED lamp (2) is fixed on plank (1) has the new Year scroll word in the localities, the positive pole of LED lamp (2), the positive pole of phototriode (3), one end of the first resistance (4) is connected with positive source, the negative pole of phototriode (3), the other end of the first resistance (4) the 4th resistance (8) of connecting respectively, be connected with power cathode after the 3rd resistance (7), drawing wire between phototriode (3) and the 4th resistance (8) is connected with "+" input of voltage comparator (5), drawing wire between the first resistance (4) and the 3rd resistance (7) is connected with "-" input of voltage comparator (5), the negative pole of LED lamp (2) is connected respectively, and the second resistance (6) is rear to be connected with the output of voltage comparator (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201487896U CN203279253U (en) | 2013-03-21 | 2013-03-21 | Light-operated LED spring festival scroll |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201487896U CN203279253U (en) | 2013-03-21 | 2013-03-21 | Light-operated LED spring festival scroll |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203279253U true CN203279253U (en) | 2013-11-06 |
Family
ID=49509569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013201487896U Expired - Fee Related CN203279253U (en) | 2013-03-21 | 2013-03-21 | Light-operated LED spring festival scroll |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203279253U (en) |
-
2013
- 2013-03-21 CN CN2013201487896U patent/CN203279253U/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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20140321 |