CN105737018A - Eye protection type flat plate light source table lamp - Google Patents
Eye protection type flat plate light source table lamp Download PDFInfo
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- CN105737018A CN105737018A CN201610114429.2A CN201610114429A CN105737018A CN 105737018 A CN105737018 A CN 105737018A CN 201610114429 A CN201610114429 A CN 201610114429A CN 105737018 A CN105737018 A CN 105737018A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S6/00—Lighting devices intended to be free-standing
- F21S6/002—Table lamps, e.g. for ambient lighting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/30—Elements containing photoluminescent material distinct from or spaced from the light source
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2105/00—Planar light sources
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- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Luminescent Compositions (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention discloses an eye protection type flat plate light source table lamp. The eye protection type flat plate light source table lamp comprises a base, a lamp holder shield and a movable connecting rod connecting the base with the lamp holder shield. A flat plate light source capable of emitting light in one direction is arranged in the lamp holder shield. The base is internally provided with a drive device capable of driving the flat plate light source to emit light. The flat plate light source is electrically connected with the drive device. The light source is easy to manufacture, and electromagnetic radiation can be effectively reduced. Inertia mixed gas with which the light source is filled and fluorescent powder with which the light source is filled are modified, and therefore the green light ratio is increased, and the influence of blue light and ultraviolet rays on human eyes is basically eliminated.
Description
Technical field
This patent relates to desk lamp technical field, particularly relates to a kind of eye-protecting type flat-plate light source desk lamp.
Background technology
The desk lamp circulated on the market at present has two types, the electricity-saving lamp that one of which is is light source with fluorescent lamp, traditional gas fluorescent light is unstable, light decline is fast, and human eye often to focus, it is easy to causes eyestrain, deteriorated vision, and its service life is short, increases use cost, also result in the wasting of resources；Furthermore, owing to light to be pooled on same direction by reflector by fluorescent lamp, colour temperature adjustment is not in place, and to easily cause local environment excessively bright, life-time service can cause eyestrain even visual deterioration, and traditional fluorescent lamp is usually list in the way of the system of taking out and props up manufacture, owing to lamp body is extremely careful, manufacture difficulty is big, and cost is also of a relatively high.Another kind is with the LED desk lamp being light source, the white light that LED light source is launched is mainly by the blue-light excited fluorescent material of 450 ~ 455nm wavelength, the more low ability of exciting of its medium wavelength is more strong, usual LED light source dispatches from the factory wavelength control within 500nm, it is usually 450nm ~ 455nm or 455 ~ 460nm, broadly fall into the section that radiation injury is the strongest, manufacturer is in order to pursue brightness, the blue light strength of LED light source would generally be strengthened, if human eye sees such light source for a long time, people is easily allowed to produce dizziness and blurred vision, uncomfortable sensation, even can cause eye injury, especially the damage of eyes macular area.Although LED desk lamp reaches energy-conservation effect to a certain extent, but there is the problem that blue light is revealed in its optical characteristics, it would be highly desirable to improve.
Both the above desk lamp, most circuit components is all placed in against lamp body in Cap casing, when user normally uses, the head of user is extremely close to circuit components, and head will be impacted by the electromagnetic radiation that circuit components sends, furthermore, some desk lamp built-in circuit components and parts in the lamp holder of lamp body, startup along with desk lamp, circuit components is easily impacted by hot-spot, easily there is stroboscopic, glare problem in this desk lamp, human eye is caused pessimal stimulation by stroboscopic, and user easily produces eyestrain, the symptom such as dry and astringent.
Along with growth in the living standard, the requirement of quality of life is also improved constantly by people, except the daily known air pollution of people, outside food pollution, how to tackle light pollution problem and also causes the attention of people gradually, it is therefore necessary to existing desk lamp is improved.
Summary of the invention
In view of this, this patent aim to overcome that the deficiencies in the prior art, it is provided that the preparation of a kind of light source is simple and can effectively reduce the eye-protecting type flat-plate light source desk lamp of electromagnetic radiation.
In order to solve above-mentioned technical problem, the present invention adopts following scheme to realize:
A kind of eye-protecting type flat-plate light source desk lamp (is called for short FL desk lamp), including base, Cap casing and the movable rod connecting base and Cap casing, be provided with in described Cap casing can be unidirection luminous flat-plate light source, being provided with the driving device that flat-plate light source can be driven luminous in base, described flat-plate light source electrically connects with driving device.
Flat-plate light source is that area source props up relative to the list of Conventional luminescent pipe and takes out mode processed, area source is monoblock molding, it is prepared difficulty and declines to a great extent, avoid rupturing when single the system of taking out or blowing or damaging, and flat-plate light source need not use transmitting cover to concentrate light, avoid the shortcoming that local environment is excessively bright so that generation photochromic more uniform；Flat-plate light source is placed in Cap casing, and driving device is placed in lamp socket, electronic devices and components relative usage person's head distance of driving device is farther, the electromagnetic radiation of its generation is also not easy to affect user head, and relative to tradition desk lamp, it can reduce electromagnetic radiation to a certain extent.
Described flat-plate light source includes top board and the base plate of bonding mutually; described top board forms the serpentine-like luminous that can fill inert mixed gas and hydrargyrum; inner surface and the corresponding backplate surface of described luminous are provided with layer protective layer; the protective layer of base plate is sequentially provided with reflecting layer and phosphor powder layer; the protective layer of luminous is provided with phosphor powder layer; and luminous be respectively arranged at two ends with electrode, flat-plate light source is electrically connected with driving device by electrode.
Top board can pass through high-temperature vacuum molding, and therefore the molding of its crooked position is also relatively easy to, and props up relative to traditional list and takes out mode processed and prepare luminous tube, it is possible to is substantially reduced manufacture difficulty；Top and base plate can be bonded together by high-temperature vacuum, snakelike luminous just forms confined space, similar with conventional fluorescent, after energising, under two extra-high voltages, inert mixed gas ionization shock mercury atom then sends ultraviolet light, and ultraviolet light clashes into fluorescent material and then sends white light；Protective layer, reflecting layer and phosphor powder layer can be reached by modes such as coating, evaporation, printings; protective layer can be thermostable transparent coating; confined space inwall can be made from pollution; the laying in reflecting layer can realize unidirectional emission light; reduce the light loss toward both sides; and then produce good illumination effect, it is greatly improved the utilization rate of light.
Described inert mixed gas includes the mixing gas that argon, nitrogen, xenon and Krypton are combined into, wherein the volume accounting of argon is 92.7 ~ 95.4%, and nitrogen is 3.2 ~ 5.7%, and xenon is 0.12 ~ 0.49%, Krypton is 1.2 ~ 3.7%, and the content of described hydrargyrum is 1.7 ~ 3.3mg.
Traditional argon, easily cause the enhancing of phosphor surface effect after powered up, so that cause the aging decay of rare-earth trichromatic fluorescent powder in energy transfer process, and this patent is by mixing above-mentioned gas, the effect of impure ion can be offset when fluorescent material is subject to exciting, reduce skin effect, delay the decay of fluorescent material.
Described phosphor powder layer includes calcium halophosphate activated by antimony andmanganese that quality accounting is 3.2 ~ 5.5% and activates the rare-earth trichromatic fluorescent powder of halogen calcium phosphate fluoressent powder and surplus, described rare-earth trichromatic fluorescent powder include europium activated yttria that quality accounting is 20.9 ~ 29.3%, 30.2 ~ 38.1% cerium, terbium activate magnesium aluminate and 36.3 ~ 47.7% europium activate magnesium aluminate barium.
By special ratios, two kinds of fluorescent material are mixed, the anti-bombardment ability of fluorescent material can be strengthened, delay the aging decay of fluorescent material further, and when being subject to exciting, the spectrum that green glow accounting surpasses 70% can be sent, colour temperature is between 3500k ~ 4000K, and the eyes that can make people are more comfortable, reaches eye protection, eye-candy effect.
Described driving device includes:
Power supply module, the electric power that external power source provides is exported by after treatment；
Driving module, it adjusts output according to power or the frequency of input；
Boosting module, in order to improve voltage to supply flat-plate light source；
Controlling module, it adjusts the output power to driving module according to the temperature of flat-plate light source and the time of running；
The input of described power supply module is connected with external power source, one of them input of described driving module electrically connects with the outfan of power supply module, its outfan is connected to one end of flat-plate light source by the module that boosts, the other end of flat-plate light source is connected to control module with feedback signal, the input of described control module electrically connects with the outfan of power supply module, and its outfan electrically connects with another input driving module.
Power supply module as the internal electric source of driving device, its by the electric power of external power source after conversion, it is provided that give and control module, drive module and boosting module so that control module, drive module and the boosting module suitable power of output to flat-plate light source.
Described power supply module includes the anti-electromagnetic interference unit, rectification unit, power factor correction unit and the switching power supply that are sequentially connected in series, described anti-electromagnetic interference unit is connected with external power source, the electromagnetic interference signal of external power source can be reduced, and the electric current of filtering interference signals is exported to rectification unit, alternating current is converted to unidirectional current by described rectification unit, and unidirectional current is exported to power factor correction unit to promote power supply quality, afterwards again by unidirectional current output to switching power supply, electric power is exported by switching power supply in PWM mode.
Described driving module drives wafer for resonance full-bridge type or resonant half-bridge formula light source, and it can change output according to the power or frequency controlling input.
Described boosting module includes more than one leakage transformer, by leakage transformer booster tension to supply flat-plate light source.
Described control module includes switch control unit, switch element and feedback adjustment unit；Described switch control unit electrically connects with power supply module and switch element respectively, its conducting state running time and temp control switch unit according to flat-plate light source；Described feedback adjustment unit electrically connects with switch element and driving module respectively, and it changes the output power to driving module according to the conducting state of switch element；Described flat-plate light source is connected to feedback adjustment unit with feedback signal.Switch control unit can adopt the characteristic of resistance capacitance discharge and recharge to determine the conducting situation of switch element.
Described switch control unit includes diode and the electric capacity, the first resistance and the temperature control part that are sequentially connected in series, the other end of described electric capacity electrically connects with the switching power supply in power supply module, the other end ground connection of described temperature control part, the negative electrode of described diode electrically connects between electric capacity and the first resistance, its plus earth；
Described switch element is electric crystal；Described electric crystal includes electric crystal collector, electric crystal base stage and electric crystal emitter-base bandgap grading, and electric crystal collector is electrically connected to feedback adjustment unit, and electric crystal base stage is electrically connected between temperature control part and the first resistance, electric crystal emitter grounding；
Described feedback adjustment unit includes the second resistance, the 3rd resistance and the 4th resistance that are sequentially connected in series, the other end of described second resistance electrically connects with flat-plate light source, the other end ground connection of the 4th resistance, described electric crystal collector is electrically connected between the 3rd resistance and the 4th resistance, and another input of described driving module is electrically connected between the second resistance and the 3rd resistance.
Before flat-plate light source not yet starts, the startup power that the relatively low event of temperature of flat-plate light source is required is higher, when the initial stage that flat-plate light source is activated, electric capacity just starts to charge up, when electric capacity just starts to charge up, resistance and the voltage drop of temperature control part are higher, now switch element is in saturation region, therefore the junction point equivalence ground connection between the 3rd resistance and the 4th resistance, and after the second resistance and the 3rd electric resistance partial pressure, the feedback signal that this driving module is obtained by the junction point between the second resistance and the 3rd resistance is less, drives module to export bigger power according to feedback signal.
After flat-plate light source operates a period of time, flat-plate light source makes surface temperature rise because of energising, power required for now flat-plate light source maintenance starting state is gradually reduced along with the rising of temperature, the resistance value of temperature control part declines therewith, voltage on electric capacity also continues to charge and rise, the voltage drop at temperature control part two ends decreases, now switch element is in working area or cut-off region, junction point between 3rd resistance and the 4th resistance just cannot pass through switch element ground connection, junction point pressure drop between second resistance and the 3rd resistance becomes big relatively, module is driven to be derived from signal bigger, and then make driving module export less power.
By power supply module, the cooperation controlling module, driving module and boosting module, it is achieved the even running of flat-plate light source, the phenomenon reducing flat-plate light source stroboscopic occurs.
Control the charge-discharge characteristic utilizing electric capacity and the first resistance in module to control the conducting situation of switch element, and utilize the time constant of electric capacity and the first resistance to determine the ON time point of switch element, wherein the size of adjustable capacitance, the first resistance and temperature control part is to coordinate the startup electrical characteristic of flat-plate light source.
Described driving device is wrapped up by wire netting, it is preferable that described wire netting is copper mesh or silver net.The impact of electric field or magnetic field is limited within the scope of one, and prevents the electrostatic induction of outside or the impact of electromagnetic induction
Compared with prior art, there is advantages that
1. flat-plate light source and driving device are separated by the desk lamp of the present invention, and driving device uses radome parcel, reduce self electromagnetic radiation to emission and its impact of outer bound pair, improve the stability run, and driving device is placed in lamp socket, distance user head farther out, reduces the electromagnetic radiation impact on user head；
2. driving device is by power supply module, the interaction controlling module, driving module and boosting module; make flat-plate light source without stroboscopic, low glare, operate steadily; and time and the temperature dynamic adjustment output power to flat-plate light source can be run according to flat-plate light source, reach intelligent control output and the purpose of protection load；
3. by the adjustment to inert mixed gas and fluorescent material, improve the aging resistance process of fluorescent material, reduce the generation of the light decay phenomenon of flat-plate light source, and improve the green glow accounting that desk lamp sends, be more suitable for human eye.
Accompanying drawing explanation
Fig. 1 is Table lamp structure schematic diagram；
Fig. 2 is flat-plate light source plane graph；
Fig. 3 is A-A sectional view in Fig. 2；
Fig. 4 is driving device structure schematic diagram；
Fig. 5 is for controlling modular structure schematic diagram；
Fig. 6 position embodiment 3 light-source structure schematic diagram；
Fig. 7 is embodiment 1 spectrogram；
Fig. 8 is embodiment 2 spectrogram
Fig. 9 is comparative example 1 spectrogram；
Figure 10 is comparative example 2 spectrogram；
Figure 11 is comparative example 3 spectrogram；
Figure 12 is comparative example 4 spectrogram；
Figure 13 is comparative example 5 spectrogram；
Figure 14 is comparative example 6 spectrogram；
Figure 15 is comparative example 7 spectrogram；
Wherein, 10, base；11, switch；12, power line；20, movable rod；30, Cap casing；40, flat-plate light source；41, top board；42, base plate；43；Luminous；431, phosphor powder layer；432, protective layer；433, reflecting layer；44, electrode；50, driving device；51, power supply module；52, module is controlled；521, switch control unit；5211, electric capacity；5212, the first resistance；5213, temperature control part；5214, diode；522, switch element；5221, electric crystal collector；5222, electric crystal base stage；5223, electric crystal emitter-base bandgap grading；523, feedback adjustment unit；5231, the second resistance；5232, the 3rd resistance；5233, the 4th resistance；53, module is driven；54, boosting module；60, external power source.
Detailed description of the invention
In order to allow those skilled in the art be more fully understood that technical scheme, below in conjunction with accompanying drawing, the present invention is further elaborated.
Embodiment 1
As shown in Figure 1, a kind of eye-protecting type flat-plate light source desk lamp, including base 10, Cap casing 30 and the movable rod 20 connecting base 10 and Cap casing 30, described base 10 is provided with switch 11 and is connected to power line 12, be provided with in described lamp holder 30 can be unidirection luminous flat-plate light source 40, being provided with the driving device 50 that can drive flat-plate light source 40 luminescence in base 10, described flat-plate light source 40 electrically connects with driving device 50.
As shown in Figures 2 and 3; described flat-plate light source 40 includes abacus 41 and the square floor 42 of bonding mutually; described top board 41 forms the serpentine-like luminous 43 that can fill inert mixed gas and hydrargyrum; inner surface and the corresponding backplate surface of described luminous 43 are provided with layer protective layer 432; the protective layer of base plate 42 is sequentially provided with reflecting layer 433 and phosphor powder layer 431; the protective layer of luminous is provided with phosphor powder layer 431; and luminous 43 be respectively arranged at two ends with electrode 44, flat-plate light source 40 is electrically connected with driving device 50 by electrode 44.
Described inert mixed gas includes the mixing gas that argon, nitrogen, xenon and Krypton are combined into, and wherein the volume accounting of argon is 92.7%, and nitrogen is 3.2%, and xenon is 0.49%, and Krypton is 3.61%, and the content of described hydrargyrum is 1.7mg.
Described phosphor powder layer includes calcium halophosphate activated by antimony andmanganese that quality accounting is 3.2% and activates the rare-earth trichromatic fluorescent powder of halogen calcium phosphate fluoressent powder and surplus, described rare-earth trichromatic fluorescent powder include europium activated yttria that quality accounting is 21.9%, 30.3% cerium, terbium activate magnesium aluminate and 47.8% europium activate magnesium aluminate barium.
As shown in Figure 4, described driving device 50 includes:
Power supply module 51, it includes the anti-electromagnetic interference unit, rectification unit, power factor correction unit and the switching power supply that are sequentially connected in series, and described anti-electromagnetic interference unit electrically connects with external power source 60；
Driving module 53, it drives wafer for resonance full-bridge type light source；
Boosting module 54, it includes two leakage transformers；
As shown in Figure 5, described control module 52 includes switch control unit 521, switch element 522 and feedback adjustment unit 523, described switch control unit 521 includes diode 5214 and electric capacity the 5211, first resistance 5212 being sequentially connected in series and temperature control part 5213, temperature control part 5213 is critesistor, the other end of described electric capacity 5211 electrically connects with the switching power supply of power supply module 51, the other end ground connection of described temperature control part 5213, electrically connect between the negative electrode of described diode 5214 with electric capacity 5211 and the first resistance 5212, its plus earth；
Described switch element is electric crystal, described electric crystal includes electric crystal collector 5221, electric crystal base stage 5222 and electric crystal emitter-base bandgap grading 5223, electric crystal collector 5221 is electrically connected to feedback adjustment unit 523, electric crystal base stage 5222 is electrically connected between temperature control part 5213 and the first resistance 5212, electric crystal emitter-base bandgap grading 5223 ground connection；
Described feedback adjustment unit 523 includes the second resistance the 5231, the 3rd resistance 5232 and the 4th resistance 5233 being sequentially connected in series, the other end of described second resistance 5231 electrically connects with flat-plate light source 40,5233 other end ground connection of the 4th resistance, described electric crystal collector 5221 is electrically connected between the 3rd resistance 5232 and the 4th resistance 5233, and another input of described driving module 50 is electrically connected between the second resistance 5231 and the 3rd resistance 5232.
Described driving device is wrapped up by copper mesh.
Embodiment 2
The present embodiment is similar to Example 1, is distinctive in that, described inert mixed gas includes the mixing gas that argon, nitrogen, xenon and Krypton are combined into, wherein the volume accounting of argon is 93.98%, and nitrogen is 4.7%, and xenon is 0.12%, Krypton is 1.2%, and the content of described hydrargyrum is 3.3mg.
Described phosphor powder layer includes calcium halophosphate activated by antimony andmanganese that quality accounting is 3.2% and activates the rare-earth trichromatic fluorescent powder of halogen calcium phosphate fluoressent powder and surplus, described rare-earth trichromatic fluorescent powder include europium activated yttria that quality accounting is 27.3%, 36.1% cerium, terbium activate magnesium aluminate and 36.6% europium activate magnesium aluminate barium.
Embodiment 3
The present embodiment is similar to Example 1, is distinctive in that, as shown in Figure 6, described top board 41 and base plate 42 are circular.
Comparative example 1
The present embodiment is similar to Example 1, is distinctive in that, noble gas is argon entirely.
Comparative example 2
The present embodiment is similar to Example 1, is distinctive in that, phosphor powder layer is rare-earth trichromatic fluorescent powder entirely, and three kinds of fluorescent material quality accountings are all consistent.
Comparative example 3
This comparative example is similar with comparative example 2, is distinctive in that, noble gas is argon entirely.
Comparative example 4
This comparative example is similar to Example 1, is distinctive in that, described inert mixed gas includes the mixing gas that argon, nitrogen, xenon and Krypton are combined into, and wherein the volume accounting of argon is 88.98%, and nitrogen is 9.7%, and xenon is 0.12%, and Krypton is 1.2%.
Comparative example 5
This comparative example is similar to Example 1, is distinctive in that described inert mixed gas includes the mixing gas that argon, nitrogen and Krypton are combined into, and wherein the volume accounting of argon is 93.5%, and nitrogen is 4.7%, and Krypton is 1.8%.
Comparative example 6
This comparative example is similar to Example 1, is distinctive in that, activates halogen calcium phosphate fluoressent powder without calcium halophosphate activated by antimony andmanganese.
Comparative example 7
This comparative example is similar to Example 1, it is distinctive in that, described phosphor powder layer includes calcium halophosphate activated by antimony andmanganese that quality accounting is 8.2% and activates the rare-earth trichromatic fluorescent powder of halogen calcium phosphate fluoressent powder and surplus, described rare-earth trichromatic fluorescent powder include europium activated yttria that quality accounting is 16.9%, 33.3% cerium, terbium activate magnesium aluminate and 49.8% europium activate magnesium aluminate barium.
One, electromagnetic radiation test:
Using electromagnetic radiation tester simulation user head position (distance Cap casing 15cm) to measure above-described embodiment 1 ~ 3 and the electromagnetic radiation of comparative example 3 desk lamp, result is table 1 below such as:
The electromagnetic radiation of embodiment 1 ~ 3 significantly reduces.
Two, light decay test:
According to GB/T17263-2013 general lighting self-ballasted fluorescent lamp performance requirement, embodiment 1 ~ 3 and comparative example 1 ~ 7 being carried out light decay test, result is table 2 such as:
Embodiment 1 ~ 3 keeps higher luminous flux sustainment rate, and colour temperature is between 3500 ~ 4000K, more adapts to human eye；In comparative example 1, noble gas is argon entirely, even if under the fluorescent material premise coordinating the present invention, luminous flux sustainment rate still has decline；Comparative example 2 changes the proportioning of fluorescent material so that its ageing resistance declines to some extent, so that luminous flux sustainment rate diminishes；Comparative example 3, relative to comparative example 2, further have changed noble gas and luminous flux sustainment rate reduced further, illustrates that the present invention is under the cooperation of inert mixed gas and fluorescent material, can effectively keep higher luminous flux sustainment rate；Comparative example 4 and 7 is that the content to inert mixed gas and fluorescent material has done change respectively so that luminous flux sustainment rate diminishes, and colour temperature becomes big, illustrates that namely slightly changing of content create negative effect, is only optimum in the scope of the present invention；In comparative example 5 and 6, the component of inert mixed gas and fluorescent material is done change, equally result has been created negative impact.
Three, spectrum test
Use spectrogrph that embodiment 1 ~ 2 and comparative example 1 ~ 7 are tested；
As shown in FIG. 7 and 8, the respectively spectrogram of embodiment 1 and embodiment 2 desk lamp, known wavelength accounts for relatively larger at the green glow of 495 ~ 570nm, reach more than 70%, and wavelength accounts for smaller at the blue light of 476 ~ 495nm, therefore the light sent is more suitable for desk lamp local environment, and the reduction of blue light then effectively prevents from human eye is caused damage；As shown in Fig. 9 ~ 15, test spectral figure for comparative example 1 ~ 7, wherein blue light components increases and the minimizing of green glow accounting all to some extent, especially comparative example 3, when noble gas and fluorescent material all change, blue light accounting increases substantially, and comparative example 4 and 7, even if proportioning slightly changes, green glow accounting is also made to reduce and the rising of blue light accounting.
Claims (9)
1. an eye-protecting type flat-plate light source desk lamp, including base, Cap casing and the movable rod connecting base and Cap casing, it is characterized in that, be provided with in described Cap casing can be unidirection luminous flat-plate light source, being provided with the driving device that flat-plate light source can be driven luminous in base, described flat-plate light source electrically connects with driving device.
2. eye-protecting type flat-plate light source desk lamp according to claim 1; it is characterized in that; described flat-plate light source includes top board and the base plate of bonding mutually; described top board forms the serpentine-like luminous that can fill inert mixed gas and hydrargyrum; inner surface and the corresponding backplate surface of described luminous are provided with layer protective layer; the protective layer of base plate is sequentially provided with reflecting layer and phosphor powder layer; the protective layer of luminous is provided with phosphor powder layer; and luminous be respectively arranged at two ends with electrode, flat-plate light source is electrically connected with driving device by electrode.
3. eye-protecting type flat-plate light source desk lamp according to claim 2, it is characterized in that, described inert mixed gas includes the mixing gas that argon, nitrogen, xenon and Krypton are combined into, wherein the volume accounting of argon is 92.7 ~ 95.4%, nitrogen is 3.2 ~ 5.7%, xenon is 0.12 ~ 0.49%, and Krypton is 1.2 ~ 3.7%, and the content of described hydrargyrum is 1.7 ~ 3.3mg.
4. eye-protecting type flat-plate light source desk lamp according to claim 2, it is characterized in that, described phosphor powder layer includes calcium halophosphate activated by antimony andmanganese that quality accounting is 3.2 ~ 5.5% and activates the rare-earth trichromatic fluorescent powder of halogen calcium phosphate fluoressent powder and surplus, described rare-earth trichromatic fluorescent powder include europium activated yttria that quality accounting is 20.9 ~ 29.3%, 30.2 ~ 38.1% cerium, terbium activate magnesium aluminate and 36.3 ~ 47.7% europium activate magnesium aluminate barium.
5. eye-protecting type flat-plate light source desk lamp according to claim 1, it is characterised in that described driving device includes:
Power supply module, the electric power that external power source provides is exported by after treatment；
Driving module, it adjusts output according to power or the frequency of input；
Boosting module, in order to improve voltage to supply flat-plate light source；
Controlling module, it adjusts the output power to driving module according to the temperature of flat-plate light source and the time of running；
The input of described power supply module is connected with external power source, one of them input of described driving module electrically connects with the outfan of power supply module, its outfan is connected to one end of flat-plate light source by the module that boosts, the other end of flat-plate light source is connected to control module with feedback signal, the input of described control module electrically connects with the outfan of power supply module, and its outfan electrically connects with another input driving module.
6. eye-protecting type flat-plate light source desk lamp according to claim 5, it is characterised in that
Described power supply module includes the anti-electromagnetic interference unit, rectification unit, power factor correction unit and the switching power supply that are sequentially connected in series, and described anti-electromagnetic interference unit is connected with external power source；
Described driving module drives wafer for resonance full-bridge type or resonant half-bridge formula light source；
Described boosting module includes more than one leakage transformer；
Described control module includes switch control unit, switch element and feedback adjustment unit；Described switch control unit electrically connects with power supply module and switch element respectively, its conducting state running time and temp control switch unit according to flat-plate light source；Described feedback adjustment unit electrically connects with switch element and driving module respectively, and it changes the output power to driving module according to the conducting state of switch element；Described flat-plate light source is connected to feedback adjustment unit with feedback signal.
7. eye-protecting type flat-plate light source desk lamp according to claim 6, it is characterised in that
Described switch control unit includes diode and the electric capacity, the first resistance and the temperature control part that are sequentially connected in series, the other end of described electric capacity electrically connects with the switching power supply in power supply module, the other end ground connection of described temperature control part, the negative electrode of described diode electrically connects between electric capacity and the first resistance, its plus earth；
Described switch element is electric crystal；Described electric crystal includes electric crystal collector, electric crystal base stage and electric crystal emitter-base bandgap grading, and electric crystal collector is electrically connected to feedback adjustment unit, and electric crystal base stage is electrically connected between temperature control part and the first resistance, electric crystal emitter grounding；
Described feedback adjustment unit includes the second resistance, the 3rd resistance and the 4th resistance that are sequentially connected in series, the other end of described second resistance electrically connects with flat-plate light source, the other end ground connection of the 4th resistance, described electric crystal collector is electrically connected between the 3rd resistance and the 4th resistance, and another input of described driving module is electrically connected between the second resistance and the 3rd resistance.
8. eye-protecting type flat-plate light source desk lamp according to claim 1, it is characterised in that described driving device is wrapped up by wire netting.
9. eye-protecting type flat-plate light source desk lamp according to claim 8, it is characterised in that described wire netting is copper mesh or silver net.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| US20060113885A1 (en) * | 2004-11-29 | 2006-06-01 | Keiji Iimura | Discharge fluorescen apparatus including fluorescent fibers |
| CN1822313A (en) * | 2006-03-21 | 2006-08-23 | 东南大学 | Flat plate type external extrode fluorescence lamp and its producing method |
| CN101475801A (en) * | 2009-01-09 | 2009-07-08 | 中国科学院上海硅酸盐研究所 | Antimonate series luminescent material for white light LED and preparation thereof |
| CN101671562A (en) * | 2007-07-02 | 2010-03-17 | 北京宇极科技发展有限公司 | Nitrogen oxides luminescent material and preparation method and application thereof |
| CN102026458A (en) * | 2009-09-11 | 2011-04-20 | 贝克来光电股份有限公司 | Driving apparatus of plane light source |
| CN204164791U (en) * | 2014-11-17 | 2015-02-18 | 陈永民 | A kind of planar light source desk lamp |
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| US20060113885A1 (en) * | 2004-11-29 | 2006-06-01 | Keiji Iimura | Discharge fluorescen apparatus including fluorescent fibers |
| CN1822313A (en) * | 2006-03-21 | 2006-08-23 | 东南大学 | Flat plate type external extrode fluorescence lamp and its producing method |
| CN101671562A (en) * | 2007-07-02 | 2010-03-17 | 北京宇极科技发展有限公司 | Nitrogen oxides luminescent material and preparation method and application thereof |
| CN101475801A (en) * | 2009-01-09 | 2009-07-08 | 中国科学院上海硅酸盐研究所 | Antimonate series luminescent material for white light LED and preparation thereof |
| CN102026458A (en) * | 2009-09-11 | 2011-04-20 | 贝克来光电股份有限公司 | Driving apparatus of plane light source |
| CN204164791U (en) * | 2014-11-17 | 2015-02-18 | 陈永民 | A kind of planar light source desk lamp |
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| CN105737018B (en) | 2018-08-17 |
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