CN103032800B - A kind of LED illumination system for classroom - Google Patents
A kind of LED illumination system for classroom Download PDFInfo
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- CN103032800B CN103032800B CN201310004373.1A CN201310004373A CN103032800B CN 103032800 B CN103032800 B CN 103032800B CN 201310004373 A CN201310004373 A CN 201310004373A CN 103032800 B CN103032800 B CN 103032800B
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- 238000005286 illumination Methods 0.000 title claims abstract description 50
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- 230000000694 effects Effects 0.000 abstract description 7
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Abstract
The invention discloses a kind of LED illumination system for classroom, described a kind of LED illumination system for classroom comprises high-contrast blackboard and LED illumination lamp; Described high-contrast blackboard comprises the writing layer, long-afterglow material layer and the reflective material layer that set gradually from outside to inside; Described LED illumination System comprises: ac-dc switching power, automatic control unit, charge relay, chargeable storage, supply relay and low-voltage LED light-emitting device; A kind of LED illumination system for classroom disclosed by the invention, improves on the one hand the contrast of blackboard in classroom and the illuminating effect that improve in classroom, reduces the energy consumption of classroom illumination on the other hand.
Description
Technical field
The present invention relates to a kind of teaching equipment, particularly a kind of classroom illumination system.
Background technology
Along with country continues to increase the input of education, education more comes to be paid attention to, and the eyesight of student is in continuous decline, student is often for can't see demonstration blackboard and worried, have to put on one's glasses in advance, allow student have to change true myopia into very soon from pseudo-myopia, and then affect fitness-for-all.
Trace it to its cause three:
The first, for the smooth degree of blackboard itself differs and the writing causing chalk to write out thereon is light and shallow;
The second, the nonhomogeneous hardness of chalk is larger, the word that the chalk that hardness is higher writes out is light and shallow, the pen that the chalk that hardness is lower writes out is slightly dark, in addition the word that writes with chalk has dust pollution, have certain infringement to the physical and mental health of teachers and students, in addition in addition ambient light many-sided reason such as impact and cause.
3rd: what present stage, all schools used is all fluorescent lamp lighting, and the light source characteristic of fluorescent lamp is light source that is discontinuous and flicker, and just discernable by eye is not out.Bringing greater impact teen-age eyesight thus, is also the principal element causing myopia multiple.Be necessary that a kind of novel blackboard of design and classroom illumination system are to overcome the above problems.
A kind of LED illumination system for classroom of inventing for imparting knowledge to students in view of above reason, the feature of this LED illumination system for classroom exchanges conversion electric power, automatic control circuit, LED light emission device, battery, long after glow luminous material for adopting.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency existing in prior art, a kind of LED illumination system for classroom is provided.To realize following goal of the invention: one, improve the contrast of blackboard in classroom and the illuminating effect improved in classroom.Two, the energy consumption of classroom illumination is reduced.In order to realize foregoing invention object, the invention provides following technical scheme:
A kind of LED illumination system for classroom, described a kind of LED illumination system for classroom comprises high-contrast blackboard and LED illumination lamp;
Described high-contrast blackboard comprises the writing layer, long-afterglow material layer and the reflective material layer that set gradually from outside to inside;
Described LED illumination lamp comprises ac-dc switching power, automatic control unit, charge relay, chargeable storage, supply relay and LED light emission device;
LED light emission device is separately positioned on top in the surrounding of high-contrast blackboard or the back side or classroom in order to provide illumination;
Wherein, chargeable storage is connected with ac-dc switching power output by charge relay, and be connected with LED light emission device shunt circuit by supply relay, LED light emission device is also connected with ac-dc switching power, and automatic control unit is connected with ac-dc switching power, charge relay and supply relay;
Wherein, ac-dc switching power is used for the alternating current of input to be converted to direct current, automatic control unit is for controlling the work of charge relay, supply relay, LED light emission device both can be worked by ac-dc switching power, also can be worked by supply relay under the power supply of chargeable storage, when the electricity of charging accumulator is too low, can be its charging by the control connection ac-dc switching power of automatic control unit and by charge relay.
Wherein, in high-contrast blackboard, writing layer is write thereon for using the writing implement mated with high-contrast blackboard; Long-afterglow material layer is for absorbing light and luminescence; Reflective material layer is for playing the contrast of soft light effect and increase blackboard.High-contrast blackboard of the present invention, the font visible contrast of writing under any light condition is high, and no dust pollution; In the event of a loss of power, emergency lighting at night can be done, and safe escape illumination during something unexpected happened at night.
When LED light emission device civil power, luminous flux is identical, and power consumption saves 50-75% than fluorescent lamp, saves 90% than incandescent lamp.When automatic control unit detects without civil power, battery-supply relay is connected, and powers to LED light emission device, supplied the power supply of LED light emission device by chargeable storage by one-way conduction diode.When chargeable storage is full of electricity, can for LED illumination lamp 5-24 hours, the operating power size of service time and LED light emission device is inversely proportional to, and power is short for its service time large, and power is just long for little service time.
LED light emission device or employing anury power supply mode, allow LED light emission device directly be installed to desk, make full use of light source and energy-saving effect to reach.
Pass through technique scheme, LED illumination lamp both can enter work by incoming transport civil power, also the chargeable storage by carrying carries out work, can be accessed by solar cell or wind power source in place with good conditionsi simultaneously, under the control of automatic control unit, when the brownout of charging accumulator, both having passed through automatically to connect ac-dc switching power by charge relay is its charging.
The positive pole of all LED among LED light emission device is coupled with the positive pole of described chargeable storage, charge relay, supply relay, ac-dc switching power respectively, negative pole respectively with the negative couplings of described chargeable storage, charge relay, supply relay, ac-dc switching power.
Described LED illumination lamp also comprises AC switch constant-current source controller, described AC switch constant-current source controller be connected to ac-dc switching power downstream and for the electric current that regulates ac-dc switching power to export and voltage.
The light source of described LED light emission device adopts LED or OLED, LED, OLED light source all adopts standard household light source interface.
Described ac-dc switching power also comprises current sensing resistance, and described current sensing resistance is coupled for measuring the electric current flowing through described LED light emission device with described LED light emission device.
Described ac-dc switching power adopts AC Switching Power Supply.
Described LED light emission device comprise more than one parallel with one another or series connection light emitting diode and current-limiting resistance.
Described a kind of classroom LED illumination lamp also comprises solar cell or wind power source, and described solar cell or wind power source are after being converted to direct current or directly access low-voltage dc power supply and be coupled with described LED light emission device.
The positive pole of described LED light emission device is coupled with the positive pole of described solar cell or wind power source, the negative pole of described LED light emission device and the negative couplings of described solar cell or wind power source.
The material that described long-afterglow material layer adopts is fluorescent material, rare-earth luminescent material.
The writing implement that described high-contrast blackboard coupling adopts the luminous writing material of high-contrast to make.
A kind of LED illumination system for classroom of inventing for imparting knowledge to students in view of above reason, the font visible contrast of writing under any light condition is high, and no dust pollution; In the event of a loss of power, emergency lighting at night can be done, and safe escape illumination during something unexpected happened at night.
When LED light emission device civil power, luminous flux is identical, and power consumption saves 50-75% than fluorescent lamp, saves 90% than incandescent lamp.When automatic control unit detects without civil power, battery-supply relay is connected, and powers to LED light emission device, supplied the power supply of LED light emission device by chargeable storage by one-way conduction diode.When chargeable storage is full of electricity, can for LED light emission device 5-24 hours, the watt level that service time and LED light emission device work simultaneously is directly proportional, and power is short for its service time large, and power is just long for little service time.
A means of illumination for high-contrast blackboard, comprises the steps, the first step: light spreads into long-afterglow material layer from writing layer, and long-afterglow material layer stores light; Second step: a part of light reflects by reflector layer the soften strengthening high-contrast blackboard glazed thread; 3rd step: when power-off or night, by chargeable storage for LED light emission device powers provide light source to long-afterglow material layer and throw light on to high-contrast blackboard; 4th step, when power-off or night, when not being equipped with chargeable storage, long-afterglow material is luminous to throw light on to high-contrast blackboard.
compared with prior art, beneficial effect of the present invention:
One, improve the contrast of blackboard in classroom and the illuminating effect that improve in classroom.
Two, the energy consumption of classroom illumination is reduced.
Three, LED light emission device adopts standard interface, can reduce the use of power line, avoid available circuit structural damage, reduces the initial cost of user, thus saves and reduce the use amount of non-ferrous metal.
Four, low pressure centrally connected power supply, significantly can reduce the manufacture difficulty of LED light emission device, process simplification, significantly cut down the use amount of electrolytic aluminium, plastics etc., reduce raw-material consumption.
Five. adopt LED light emission device to comprise and carry out throwing light on and background light filling to high-contrast blackboard; Due to the only continuous print that light source sends, thus serve the effect of vision protection.
Accompanying drawing illustrates:
Fig. 1 is structural representation of the present invention;
Fig. 2 is structural representation of the present invention.
Mark in figure: 1-ac-dc switching power, 2-charge relay, 3-chargeable storage, 4-supply relay, 5-automatic control unit, 6-LED light-emitting device, 7-writing layer, 8-long-afterglow material layer, 9-reflective material layer.
Detailed description of the invention
Below in conjunction with test example and detailed description of the invention, the present invention is described in further detail.But this should be interpreted as that the scope of the above-mentioned theme of the present invention is only limitted to following embodiment, all technology realized based on content of the present invention all belong to scope of the present invention.
A kind of LED illumination system for classroom, this service system can comprise the subsystem of one or more parallel connection, and has numerous embodiments;
A kind of LED illumination system for classroom, described a kind of LED illumination system for classroom comprises high-contrast blackboard and LED illumination lamp;
As shown in Figure 1, described high-contrast blackboard comprises the writing layer 7, long-afterglow material layer 8 and the reflective material layer 9 that set gradually from outside to inside;
As shown in Figure 2, described LED illumination lamp comprises: ac-dc switching power 1, automatic control unit 5, charge relay 2, chargeable storage 3, supply relay 4 and LED light emission device 6;
LED light emission device is separately positioned on top in the surrounding of high-contrast blackboard or the back side or classroom in order to provide illumination;
Wherein, chargeable storage is connected with ac-dc switching power output by charge relay, and be connected with LED light emission device shunt circuit by supply relay, LED light emission device is also connected with ac-dc switching power, and automatic control unit is connected with ac-dc switching power, charge relay and supply relay;
Wherein, in high-contrast blackboard, writing layer is write thereon for using the writing implement mated with high-contrast blackboard; Long-afterglow material layer is for absorbing light and luminescence; Reflective material layer is for playing the contrast of soft light effect and increase blackboard.High-contrast blackboard of the present invention, the font visible contrast of writing under any light condition is high, and no dust pollution; In the event of a loss of power, emergency lighting at night can be done, and safe escape illumination during something unexpected happened at night.
Wherein, ac-dc switching power is used for the alternating current of input to be converted to direct current, automatic control unit is for controlling the work of charge relay, supply relay, LED light emission device both can be worked by ac-dc switching power, also can be worked by supply relay under the power supply of chargeable storage, when the electricity of charging accumulator is too low, can be its charging by the control connection ac-dc switching power of automatic control unit and by charge relay.
Wherein, the positive pole of the positive pole of LED light emission device and automatic control unit and ac-dc switching power, charge relay and supply relay, solar cell etc. is coupled, the negative couplings of the negative pole of LED light emission device and automatic control unit and ac-dc switching power, charge relay and supply relay, solar cell etc.Alternating current 150-264V civil power is converted to 12VDC voltage by the ac-dc switching power of Switching Power Supply and powers to LED light emission device work by one-way conduction diode, when LED illumination lamp civil power, luminous flux is identical, power consumption saves 50-75% than fluorescent lamp, saves 90% than incandescent lamp.When automatic control unit detects without civil power, battery-supply relay is connected, and powers to LED light emission device, provided the power supply of LED light emission device by chargeable storage by one-way conduction diode.When chargeable storage is full of electricity, can for LED light emission device 5-24 hours, the operating power size of service time and LED light emission device is inversely proportional to, and power is short for its service time large, and power is just long for little service time.
LED light emission device or employing anury power supply mode, allow LED light emission device directly be installed to desk, make full use of light source and energy-saving effect to reach.
Automatic control unit adopts special-purpose software to control.Automatic control unit detects the voltage of chargeable storage, and when voltage being detected lower than 11V, ac-dc switching power is charged to chargeable storage by charge relay.Automatic control unit detects the working condition of LED light emission device by the size of current passed through detecting ac-dc switching power, when 50% of the non-overrate of load of LED light emission device, then allows charge relay to connect, charges to chargeable storage.In order to ensure security of system work, power source charges condition can be arranged.
Automatic control unit also detects the electric current charged to chargeable storage by ac-dc switching power simultaneously, and when charging current is greater than 150% of rated charge stream, charge relay disconnects, and stops charging; Time delay connects charge relay in 10 seconds again, continues charging, as battery is impaired, repair impaired battery simultaneously to battery.When detect charging current be less than rated charge stream 5% or accumulative charging interval exceed or reach 8 hours, then automatically disconnect charge relay, stop to charge in batteries.
As used solar recharging, solar cell is charged to chargeable storage by one-way conduction diode, then is powered to LED light emission device by supply relay by chargeable storage.Save medium voltage conversion links, to raise the efficiency.Powered directly to LED light emission device by chargeable storage, ensure that the voltage of chargeable storage is relatively stable, and then ensure the working stability of LED light emission device.
The power of ac-dc switching power is determined according to the capacity of chargeable storage and the power of LED light emission device.
High-contrast blackboard utilizes the propagation characteristic of light, in conjunction with the characteristic of a kind of macromolecule Novel Delivery material and long-afterglow fluorescent luminescent material, realize showing the writing high-contrast write on the blackboard, allow people see very easily, and LED light emission device is combined with long-afterglow material layer fluorescence luminescent material; Ensure that the continuity of light, flicker free, and then reach the effect of vision protection;
Simultaneously long-afterglow fluorescent luminescent material can be used as low light illuminant at night, long-afterglow fluorescent luminescent material after reception certain hour light, powered-down or light source; The storage light characteristic of long-afterglow fluorescent luminescent material, when the light luminance of external light source lower than long-afterglow fluorescent luminescent material, the finite light source of long-afterglow fluorescent luminescent material and sustained release ten hours, luminous intensity increasing progressively in time decays gradually.
Although illustrate the specific embodiment of the present invention and illustrate, but the diagram and the explanation that are not the above-mentioned embodiment of meaning characterize all possible forms of the invention, more definite, word used in description is illustrative but not determinate, and can understand, many changes can be carried out to the present invention and not deviate from this.
Claims (8)
1. a LED illumination system for classroom, is characterized in that, described LED illumination system for classroom comprises high-contrast blackboard and LED illumination lamp;
Described high-contrast blackboard comprises the writing layer, long-afterglow material layer and the reflective material layer that set gradually from outside to inside;
Described LED illumination lamp comprises: ac-dc switching power, automatic control unit, charge relay, chargeable storage, supply relay and LED light emission device;
LED light emission device is separately positioned on top in the surrounding of high-contrast blackboard or the back side or classroom or desk in order to provide illumination; Described LED light emission device is the power supply mode of anury;
Wherein, chargeable storage is connected with ac-dc switching power output by charge relay, and be connected with LED light emission device shunt circuit by supply relay, LED light emission device is also connected with ac-dc switching power, and automatic control unit is connected with ac-dc switching power, charge relay and supply relay;
Described ac-dc switching power also comprises current sensing resistance, and described current sensing resistance is coupled with described LED light emission device, for measuring the electric current flowing through described LED light emission device;
Wherein, ac-dc switching power is used for the alternating current of input to be converted to direct current, and automatic control unit, for controlling the work of charge relay, supply relay, when described automatic control unit detects without civil power, connects supply relay;
Described automatic control unit detects the working condition of described LED light emission device by the size of current that detection ac-dc switching power passes through, when 50% of the non-overrate of load of described LED light emission device, then connect charge relay and charge to chargeable storage;
Automatic control unit also detects the electric current charged to chargeable storage by ac-dc switching power simultaneously, and when charging current is greater than 150% of rated charge stream, charge relay disconnects, and stops charging; When detecting that 5% or accumulative charging interval that charging current is less than rated charge stream exceed or reach 8 hours, then automatically disconnect charge relay, stop to charge in batteries; LED light emission device both can be worked by ac-dc switching power, also can be worked by supply relay under the power supply of chargeable storage, when the electricity of charging accumulator is too low, can be its charging by the control connection ac-dc switching power of automatic control unit and by charge relay.
2. a kind of LED illumination system for classroom as claimed in claim 1, it is characterized in that, described a kind of classroom LED illumination lamp also comprises AC switch constant-current source controller, described AC switch constant-current source controller be connected to ac-dc switching power downstream and for the electric current that regulates ac-dc switching power to export and voltage.
3. a kind of LED illumination system for classroom as claimed in claim 1, is characterized in that, the light source of described LED light emission device adopts LED or OLED.
4. a kind of LED illumination system for classroom as claimed in claim 1, is characterized in that, described ac-dc switching power adopts AC Switching Power Supply.
5. a kind of LED illumination system for classroom as described in claim 1 or 3, is characterized in that, described LED light emission device comprise more than one parallel with one another or series connection light emitting diode and current-limiting resistance.
6. a kind of LED illumination system for classroom as claimed in claim 1, it is characterized in that, described LED illumination lamp also comprises solar cell or wind power source, and described solar cell or wind power source are after being converted to direct current or directly access low-voltage dc power supply and be coupled with described LED light emission device.
7. a kind of LED illumination system for classroom as claimed in claim 6, it is characterized in that, the positive pole of described LED light emission device is coupled with the positive pole of described solar-electricity battery or wind power source, the negative pole of described LED light emission device and the negative couplings of described solar cell or wind power source.
8. a kind of LED illumination system for classroom as claimed in claim 1, is characterized in that, the material that described long-afterglow material layer adopts is fluorescent material.
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| CN201310004373.1A CN103032800B (en) | 2013-01-07 | 2013-01-07 | A kind of LED illumination system for classroom |
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| CN201310004373.1A CN103032800B (en) | 2013-01-07 | 2013-01-07 | A kind of LED illumination system for classroom |
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| CN103032800A CN103032800A (en) | 2013-04-10 |
| CN103032800B true CN103032800B (en) | 2015-08-19 |
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| CN106476486A (en) * | 2016-12-16 | 2017-03-08 | 朱虹斐 | Can global flag blackboard |
| CN112519454A (en) * | 2020-12-07 | 2021-03-19 | 河北华发教育科技股份有限公司 | Data acquisition type multifunctional intelligent blackboard |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6335724B1 (en) * | 1999-01-29 | 2002-01-01 | Ricoh Company, Ltd. | Method and device for inputting coordinate-position and a display board system |
| CN201344442Y (en) * | 2008-12-17 | 2009-11-11 | 郑兴林 | Illumination system with electricity-storage LED |
| CN201390059Y (en) * | 2009-04-08 | 2010-01-27 | 宫永洁 | Dust-free vision-aid blackboard |
| CN201385507Y (en) * | 2009-04-27 | 2010-01-20 | 何东光 | Wordpad for teaching |
| CN102142711A (en) * | 2011-03-25 | 2011-08-03 | 姚志恩 | Control system of wind driven generator |
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