CN201628144U - LED mixed-light efficient energy-saving street lamp - Google Patents
LED mixed-light efficient energy-saving street lamp Download PDFInfo
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- CN201628144U CN201628144U CN201020131750XU CN201020131750U CN201628144U CN 201628144 U CN201628144 U CN 201628144U CN 201020131750X U CN201020131750X U CN 201020131750XU CN 201020131750 U CN201020131750 U CN 201020131750U CN 201628144 U CN201628144 U CN 201628144U
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- pressure mercury
- light
- mercury lamp
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/72—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps in street lighting
Abstract
The utility model relates to an LED mixed-light efficient energy-saving street lamp which is characterized in that a high-voltage sodium lamp (1) is arranged in a high-voltage sodium lamp reflector (3); the high-voltage sodium lamp reflector (3) is arranged in a mixed-light street lamp (4); LED lamps (2) are arranged on the periphery of the high-voltage sodium lamp reflector (3) and on a lower shell of the mixed-light street lamp (4); and a plurality of LED lamps (2) are arranged by taking the mixed-light street lamp (4) as the mounting base point and distributed around the high-voltage sodium lamp reflector (3) annularly. The mains supply of AC 220 volts is connected with the power input end of an electric ballast, the electric ballast is provided with two output ends, one end is connected with the high-voltage sodium lamp (1), and the other end is connected with the LED lamps (2); and the light of the LED lamps and the high-voltage sodium lamp reflector (3) is mixed, and then the warm white light is obtained, thus improving the middle visual brightness in eyes of people and improving the color rendering property. The electric ballast capable of time control of power is used instead of the traditional inductive ballast, thus greatly improving the effect for saving energy of the whole lamp.
Description
Technical field
The utility model relates to LED mixed light efficient energy-saving street lamp.
Background technology
Visual characteristics of human eyes---
Light focuses on the retina through crystalline lens, and amphiblestroid two kinds of cells: 1, rhabdocyte is responsible for perceived light brightness; 2, cone cell is responsible for perception colourity.
Human eye " photopic vision " feature:
Under the normal vision condition, when effectively brightness＞3.5cd/m2, rhabdocyte perceptual object profile, cone cell perceptual object surface color.This moment, human eye was the most responsive to green-yellow light.
Human eye " mesopic vision " feature:
Part taper and rhabdocyte work are arranged under the transition state;
Blue green light is more bright than ruddiness.
Human eye " noctovision " feature:
Under the low-light level condition, when brightness＜0.035cd/m2: cone cell is not had an effect, and can not differentiate color, and rhabdocyte works, and makes contour of object that certain visibility be arranged, and this moment, human eye was the most responsive to blue green light.
The photopic vision of high-pressure mercury lamp light source is better, but the mesopic vision feature is bad, but actual street lighting brightness is all 0.1---3cd/m2 in the mesopic vision characteristic range with the noctovision scope in, so high-pressure mercury lamp human eye vision brightness when actual street lighting is good inadequately.
The colour rendering of white light is more superior than gold-tinted.
White light is the color that complex light is easy to distinguish road and surrounding enviroment, has better guaranteed the security and the comfortableness of road driving.White light is visual better than gold-tinted.Studies show that white light is easier is experienced by optic nerve.
Common high-pressure mercury lamp street lamp is analyzed:
High-pressure mercury lamp is with its high light efficiency, high mist transmitting, and the life-span is long, and advantages such as low price are able to outdoor.
The extensive use of road lighting field.But common high-pressure mercury lamp light fixture also have its shortcoming as: 1, the time after midnight since line voltage rise, lamp power also rises simultaneously thereupon and causes the lamp overload, so common high-pressure mercury lamp has only several thousand hours actual life, differ greatly with laboratory tests life-span of 18000 hours.2, high-pressure mercury lamp issued light look is flavous, the environment around the low colour rendering of gold-tinted makes, and road and people present factitious state.3, traditional inductive type ballast power consumption is big, and efficient is low.
The utility model content
The purpose of this utility model provides LED mixed light efficient energy-saving street lamp.
The utility model purpose is the following defective for fear of traditional Inductive ballast high-pressure mercury lamp: " 1, lamp power also rose simultaneously thereupon and caused the lamp overload, causes lost of life light decay too fast because line voltage rises the time after midnight.2, high-pressure mercury lamp issued light look is flavous, the environment around the low colour rendering of gold-tinted makes, and road and people present factitious state.3, traditional inductive type ballast power consumption is big, and efficient is low " etc.; The invention provides a kind of street lamp of warm white high color rendering index (CRI), and more energy-conservation than conventional road lamp.
The technical scheme that its technical problem that solves the utility model adopts is:
LED mixed light efficient energy-saving street lamp, it is characterized in that: high-pressure mercury lamp is contained in the high-pressure mercury lamp reflector, the high-pressure mercury lamp reflector is installed in the mixed light road lamp, in the periphery that is positioned at the high-pressure mercury lamp reflector, the LED lamp is installed on the lower house of mixed light road lamp, serves as a plurality of LED lamp annular spread of basic point to be installed around the high-pressure mercury lamp reflector with the mixed light road lamp; The AC220V city is electrically connected the power input of electric ballast, and electric ballast has two outputs, a termination high-pressure mercury lamp, a termination LED lamp.
LED aluminum hull shell body and the clamp ring of bulb aluminum component are locked at the spherical LED inner casing of its inside jointly, and high-power LED is installed in the inner formation of spherical LED inner casing; LED lamp inner shell is spherical, and rotary, irradiating angle is adjustable.
Annular spread is made up of the LED lamp of blue light and two kinds of colors of white light at the LED lamp of high-pressure mercury lamp reflector periphery.
Be provided with lightning circuit at the electric ballast power input, lightning circuit is made up of ceramic gas discharge tube and piezo-resistance, use single-chip microcomputer to add delay procedure realization delay function, again by the corresponding electronic switch of Single-chip Controlling, change the frequency of oscillation or the dutycycle of ballast again by the corresponding Resistor-Capacitor Unit of electronic switch switching, realize that the time control of street lamp becomes the light function.
The electric energy that the energy storage inductor L2 secondary coil of circuit of power factor correction produces is that other accessory circuits of ballast are powered after by rectification/filtering/voltage stabilizing; when as long as circuit occurs when unusual by stopping circuit of power factor correction; can allow other each attached electronic circuits of ballast quit work, make whole ballast enter guard mode because of dead electricity.
Way:
1. by white, blue LED and flavous high-pressure mercury lamp mixed light, obtain warm white at last.Improve the noctovision and the mesopic vision brightness of human eye, improved colour rendering index simultaneously.
With LED around being installed in beyond the high-pressure mercury lamp reflector, both avoided the high temperature of high-pressure mercury lamp, improved the uniformity of mixed light simultaneously.
3. the bulb type LED lamp aluminium shell by particular design makes it the direction of illumination and the irradiated area of convenient, flexible adjusting LED secondary light source, thereby has realized the fine setting of whole light fixture " distribution curve flux figure ", also can make mixed light more even simultaneously.
4. use the electric ballast to replace traditional Inductive ballast, reduced the luminous efficiency that ballast power consumption has improved whole light fixture.
5. used APFC in the electric ballast, improve power factor and also enlarged adaptability to input voltage simultaneously, having realized that input voltage is at 160V---the 260V busbar voltage all can be stabilized in 400V, avoid mains ripple to cause the lamp power overload, reduced light decay.
6. in electric ballast, used single-chip microcomputer, realized lamp power, thereby realized the time period meagrely-populated, reduced power automatically and improve energy-saving effect on the road surface according to setting-up time control high-pressure mercury lamp.
High-pressure mercury lamp is contained in the high-pressure mercury lamp reflector, the high-pressure mercury lamp reflector is installed in the mixed light road lamp, in the periphery that is positioned at the high-pressure mercury lamp reflector, the LED lamp is installed on the lower house of mixed light road lamp, serves as a plurality of LED lamp annular spread of basic point to be installed around the high-pressure mercury lamp reflector with the mixed light road lamp.The AC220V city is electrically connected the power input of electric ballast, and electric ballast has two outputs, and an end connects high-pressure mercury lamp, and an end connects the LED lamp.
The beneficial effects of the utility model are:
1, it is all very high just to be connected in the reflector internal temperature because high-pressure mercury lamp when work temperature is higher! With high-powered LED lamp peripheral around a circle at the high-pressure mercury lamp reflector, both obtained the heat dissipation problem that mixed light effect preferably also preferably resolves simultaneously the LED lamp.
2, the housing of secondary light source LED lamp: adopt shell structure in shell+sphere, promptly realized regulating flexibly.Can make whole mixed light effect reach best.
3, adopt efficient high-pressure sodium vapor lamp (golden yellow coloured light) as the main light source illumination, use blue and white led lamps and its mixed light again, finally obtained warm white light, improved " the mesopic vision brightness " of human eye, also improved colour rendering index.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1: be the Light mixed light fixture layout;
Fig. 2: be LED secondary light source bulb type aluminum hull;
Fig. 3: be the electric ballast theory diagram.
Among the figure:
1. high-pressure mercury lamp, 2.LED lamp, 3. high-pressure mercury lamp reflector, 4. mixed light road lamp, 2.1.LED aluminum hull shell body, the clamp ring of 2.2. bulb aluminum component, spherical LED inner casing 5. PFCs of 2.3. and voltage stabilizing control module, 6. square wave oscillation module, 7. startup and protection control module
The specific embodiment
Most preferred embodiment:
High-pressure mercury lamp 1 is contained in the high-pressure mercury lamp reflector 3, high-pressure mercury lamp reflector 3 is installed in the mixed light road lamp 4, in the periphery that is positioned at high-pressure mercury lamp reflector 3, LED lamp 2 is installed on the lower house of mixed light road lamp 4, serves as a plurality of LED lamp 2 annular spread of basic point to be installed around high-pressure mercury lamp reflector 3 with mixed light road lamp 4; The AC220V city is electrically connected the power input of electric ballast, and electric ballast has two outputs, a termination high-pressure mercury lamp 1, one termination LED2 lamp.
LED aluminum hull shell body 2.1 and bulb aluminum component clamp ring 2.2 are locked at the spherical LED inner casing 2.3 of its inside jointly, and high-power LED is installed in spherical LED inner casing 2.3 inner formations; LED lamp 2 inner shells are spherical, and rotary, irradiating angle is adjustable.
Annular spread is made up of the LED lamp of blue light and two kinds of colors of white light at the LED of high-pressure mercury lamp reflector 3 peripheries 2 lamps.
Be provided with lightning circuit at the electric ballast power input, lightning circuit is made up of ceramic gas discharge tube and piezo-resistance, use single-chip microcomputer to add delay procedure realization delay function, again by the corresponding electronic switch of Single-chip Controlling, change the frequency of oscillation or the dutycycle of ballast again by the corresponding Resistor-Capacitor Unit of electronic switch switching, realize that the time control of street lamp becomes the light function.
The electric energy that the energy storage inductor L2 secondary coil of circuit of power factor correction produces is that other accessory circuits of ballast are powered after by rectification/filtering/voltage stabilizing; when as long as circuit occurs when unusual by stopping circuit of power factor correction; can allow other each attached electronic circuits of ballast quit work, make whole ballast enter guard mode because of dead electricity.
Fitting structure:
High-pressure mercury lamp 1 is contained in the high-pressure mercury lamp reflector 3, high-pressure mercury lamp reflector 3 is installed in the mixed light road lamp 4, in the periphery that is positioned at high-pressure mercury lamp reflector 3, LED lamp 2 is installed on the lower house of mixed light road lamp 4, that is: serve as a plurality of LED lamp 2 annular spread of basic point to be installed around high-pressure mercury lamp reflector 3 with mixed light road lamp 4.
The ballast circuit structure:
Civil power arrives " lightning protection circuit " via fuse F1, " lightning protection circuit " is made of with the ceramic discharge tube GDT of tripod is in parallel piezo-resistance MOV, civil power arrives " EMC filtering and rectification circuit " again through behind the lightning protection circuit, form filter circuit by C1, L1, C2, C6, connected mode according to accompanying drawing 3 connects, and mainly plays the effect of isolating high-frequency harmonic that absorbs.Rectifier bridge DL1 mainly is transformed into the alternating current of 50Hz the Rectified alternating current of 100Hz.At this minute two-way, one the road lights the LED lamp to " LED constant-current drive circuit ", another road is arrived APFC and mu balanced circuit again, actual APFC and mu balanced circuit are circuit, and " APFC and mu balanced circuit " has both to " high-frequency signal oscillating circuit ", " single-chip microcomputer time control power circuit ", " signal shaping and change-over circuit ", " starting and holding circuit " power supply simultaneously; " starting and holding circuit " of ballast mainly realizes controlling the protection of whole ballast by the working condition of control " PFC and voltage stabilizing control module are 5. "." high-frequency signal oscillating circuit ": this circuit mainly is responsible for producing the square wave of about 40KHz, and the dutycycle of square wave is variable, and dutycycle is controlled by " single-chip microcomputer time control power circuit ", recently reaches change lamp power, i.e. dimming function by changing duty; Convert single-ended signal to both-end anti-phase differential signal to " signal shaping and change-over circuit " by " signal shaping and change-over circuit " again and promote " power amplification circuit ", through high-frequency and high-voltage (about 400V) square wave of the about 40KHz of capacitor C 4 outputs, this square-wave voltage is powered to high-pressure mercury lamp through outputting inductance.
Each electronic circuit principle of work and power is introduced:
Lightning protection circuit: be connected according to the connected mode of accompanying drawing 3 with GDT (ceramic discharge tube) by MOV (piezo-resistance), mainly play the lightning protection effect by absorption moment surge voltage.
EMC filtering and rectification circuit: form filter circuit by C1, L1, C2, C6,, mainly play the effect of isolating high-frequency harmonic that absorbs according to the connected mode connection of accompanying drawing 3.Rectifier bridge DL1 mainly is transformed into the alternating current of 50Hz the Rectified alternating current of 100Hz.
PFC and mu balanced circuit:
The implementation of power factor emendation function:
ON time by gauge tap pipe VT1, the triangular wave that makes inductance L 2 electric currents be critical discontinuous changes, its mean value changes with sine wave, this kind of power factor correction technology can make the power factor of circuit reach more than 0.99, specifically 5. provides input voltage and input voltage and phase information by R1, R2 series connection pressure sampling circuit to " PFC and voltage stabilizing control module "; 5. secondary coil by L2 provides current over-zero information to " power factor correction module ".The VT1 conducting makes the L2 accumulation of energy, and L2 externally releases energy during the VT1 stopping, charges to C3 by D1, and after energy had discharged in the inductance, diode D1 ended, and inductance L 2 voltages drop to zero.After control module detects the voltage trailing edge, open metal-oxide-semiconductor VT1 immediately, L2 begins accumulation of energy, has realized the critical conduction mode of operation.
The implementation of voltage stabilizing function:
By R4 sampling output voltage, be that the busbar voltage voltage stabilizing is at DC400V, when the PWM waveform width of output voltage " PFC and voltage stabilizing control module " " output " pin output 5. during greater than 400V can reduce, the ON time of VT1 shortens, the L2 energy storage capacity is reduced, thereby reduce the output energy, reduce output voltage.When output voltage during less than 400V " power factor correction module " 5. export PWM waveform width and can increase, the ON time of VT1 is elongated, and the L2 energy storage capacity is increased, thereby increases the output energy, increases output voltage.The implementation of abnormity protection function:
1, " PFC and voltage stabilizing control module " " abnormal protection input pin " 5. is that low level is effective, is necessary for high level during operate as normal.
2, the input voltage of " PFC and mu balanced circuit " must be lower than more than the output voltage 30V, otherwise " PFC and voltage stabilizing control module " 5. enters protected mode, and " PFC and mu balanced circuit " quits work.
3, excessive when the conducting electric current of VT1, cause the pressure drop of R3 excessive, " PFC and voltage stabilizing control module " 5. just quits work when surpassing 1V, and VT1 ends.
4, DC12V output: convert DC12V voltage to after by the rectifying and wave-filtering voltage stabilizing by " PFC and voltage stabilizing control module " 5. inner electric energy that the secondary coil of L2 is responded to; for other need the modular circuit power supply of low-voltage power supply, as: during single-chip microcomputer control circuit, square wave oscillation module 6., signal shaping and change-over circuit, start and protect control module 7..If promptly " PFC and mu balanced circuit " quits work, there is not DC12V output, other each modular circuits can quit work because of dead electricity.
The oscillating circuit function:
Produce the high frequency square wave of about 40KHz, and the dutycycle of this square wave can be by R5, change with the switching of R6, when R5 and R6 disconnect dutycycle with regard to greatly, otherwise dutycycle diminishes when R5 and R6 insert oscillating circuit.
Signal shaping and change-over circuit function:, convert single-ended signal to both-end anti-phase differential signal by transformer coupled.
Half-bridge power amplifying circuit: VT3 and VT3 be according to the connected mode of accompanying drawing three, forms push-pull amplifier circuit, by C4 as output coupling capacitor, every directly.
High-tension ignition and holding circuit:
Igniting: the busbar voltage of DC400V gives capacitor C 5 chargings by resistance R 9; when the electricity of C5 is full of; the voltage at C5 two ends equals busbar voltage DC400V; " igniting " pin output low level of " start with protection control module 7. " at this moment; make relay J 3 adhesives; make the C5 both end voltage reduce to 0V rapidly; make L3 auxiliary winding potential jump; L3 auxiliary winding inductance produces the voltage jump that an induced voltage resists C5, because the main winding number of turn of L3 is much larger than auxiliary winding, so the 400V voltage jump of L3 auxiliary winding; the main winding end of sensing L3 boosted into thousands of volts with regard to moment; make the high-pressure mercury lamp perforation ignition, after high-pressure mercury lamp is lighted a fire successfully, must have lamp current.L4 will inevitably sense lamp current; and the output high-frequency ac voltage is given " lamp current sampling " pin of " startup and protection control module are 7. "; when " start with protection control module 7. " when receiving the sampling voltage of lamp current; " igniting " pin reverts to high level; relay J 3 disconnects, and ignition process is finished.
Open-circuit-protection: if after L3 produces the high pressure of igniting and when can not receive the lamp current sampled signal of L4; " startup and protection control module are 7. " just is judged as the lamp open fault; " protection output " pin will the output low level signal; " PFC and mu balanced circuit control module " quit work; all do not quit work because there being the DC12V power supply thereby cause other each modules, whole ballast enters guard mode.This moment the power consumption 0.8W that only has an appointment
Short-circuit protection:
The busbar voltage of prefiring short-circuit protection: DC400V is passed through R7; L3; high-pressure mercury lamp; the L4 dividing potential drop of connecting; if lamp short circuit R7; with the node voltage of L3 will inevitably with very low (near 0 current potential) by isolation coupling resistance R 8; after this low low level signal being given " voltage sampling " pin of " starting and protection module "; " start and protection module " and be judged as short trouble; " protection output " pin will the output low level signal; " PFC and voltage stabilizing control module are 5. " quit work; all do not quit work because there being the DC12V power supply thereby cause other each modules, whole ballast enters guard mode.This moment the power consumption 0.8W that only has an appointment
Short circuit road protection during bright lamp: short circuit during bright lamp; will inevitably cause " PFC and mu balanced circuit " output loading overweight; and the busbar voltage of DC400V is reduced; when busbar voltage low to the time near the input voltage of " PFC and mu balanced circuit "; " PFC and voltage stabilizing control module are 5. " quits work; all do not quit work because there being the DC12V power supply thereby cause other each modules, whole ballast enters guard mode.This moment the power consumption 0.8W that only has an appointment
Control circuit during single-chip microcomputer: use single-chip microcomputer+delay procedure to realize delay function,, change the frequency of oscillation or the dutycycle of ballast again by J1, J2 switching R5, R6, realize that the time control of street lamp becomes the light function again by Single-chip Controlling relay J 1, J2
LED constant current source driving circuit: only with the shared rectifier bridge of high-pressure mercury lamp rectifier circuit circuit in the past, it is independent to guarantee that to greatest extent high-pressure mercury lamp circuit and LED constant-current drive circuit separate, major function is exactly the constant current that 300-350mA is provided for LED, and it is luminous to be used for driving LED.
The beneficial effect of this kind ballast structure is:
1. by PFC and mu balanced circuit (APFC), strengthened the adaptability to supply voltage, avoided causing because supply voltage is higher, lamp power becomes big overload, causes light decay too fast, namely prolongs the service life of light source. Realized High Power Factor, the line loss of transmission line of electricity that valency is low;
2. by using single-chip microcomputer time control power technology, set lamp power according to the temporal regularity of peak traffic and low ebb, realized as required illumination, improved power saving rate;
3. the lightning-prevention and surge-resistance voltage performance is good, and is more stable in outdoor application;
4. have output open circuit and short-circuit protection function, make more stability and safety of its work.
Claims (3)
1.LED mixed light efficient energy-saving street lamp, it is characterized in that: high-pressure mercury lamp (1) is contained in the high-pressure mercury lamp reflector (3), high-pressure mercury lamp reflector (3) is installed in the mixed light road lamp (4), in the periphery that is positioned at high-pressure mercury lamp reflector (3), LED lamp (2) is installed on the lower house of mixed light road lamp (4), serves as a plurality of LED lamps (2) annular spread of basic point to be installed around high-pressure mercury lamp reflector (3) with mixed light road lamp (4); The AC220V city is electrically connected the power input of electric ballast, and electric ballast has two outputs, a termination high-pressure mercury lamp (1), termination LED (a 2) lamp; LED aluminum hull shell body (2.1) and bulb aluminum component clamp ring (2.2) are locked at the spherical LED inner casing (2.3) of its inside jointly, and high-power LED is installed in the inner formation of spherical LED inner casing (2.3); LED lamp (2) inner shell is spherical, and rotary, irradiating angle is adjustable.
2. according to the described LED mixed light of claim 1 efficient energy-saving street lamp, it is characterized in that: annular spread is made up of the LED lamp of blue light and two kinds of colors of white light at peripheral LED (2) lamp of high-pressure mercury lamp reflector (3).
3. LED mixed light efficient energy-saving street lamp according to claim 1 is characterized in that: be provided with lightning circuit at the electric ballast power input, lightning circuit is made up of ceramic gas discharge tube and piezo-resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020131750XU CN201628144U (en) | 2010-02-10 | 2010-02-10 | LED mixed-light efficient energy-saving street lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020131750XU CN201628144U (en) | 2010-02-10 | 2010-02-10 | LED mixed-light efficient energy-saving street lamp |
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| Publication Number | Publication Date |
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| CN201628144U true CN201628144U (en) | 2010-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201020131750XU Expired - Fee Related CN201628144U (en) | 2010-02-10 | 2010-02-10 | LED mixed-light efficient energy-saving street lamp |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101761838A (en) * | 2010-02-10 | 2010-06-30 | 海南世银能源科技有限公司 | LED (light emitting diode) light-mixing efficient energy-saving street lamp |
| CN103982840A (en) * | 2014-05-09 | 2014-08-13 | 广西南宁百兰斯科技开发有限公司 | Self-protective lightening protection streetlamp |
| CN104696751A (en) * | 2015-03-09 | 2015-06-10 | 苏州昆仑工业设计有限公司 | Novel multilayered lamp |
-
2010
- 2010-02-10 CN CN201020131750XU patent/CN201628144U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101761838A (en) * | 2010-02-10 | 2010-06-30 | 海南世银能源科技有限公司 | LED (light emitting diode) light-mixing efficient energy-saving street lamp |
| CN103982840A (en) * | 2014-05-09 | 2014-08-13 | 广西南宁百兰斯科技开发有限公司 | Self-protective lightening protection streetlamp |
| CN104696751A (en) * | 2015-03-09 | 2015-06-10 | 苏州昆仑工业设计有限公司 | Novel multilayered lamp |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101110 Termination date: 20150210 |
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| EXPY | Termination of patent right or utility model |