CN201062719Y - LED lighting lamp for flame-proof and intrinsic safety mine - Google Patents
LED lighting lamp for flame-proof and intrinsic safety mine Download PDFInfo
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- CN201062719Y CN201062719Y CNU2007201159932U CN200720115993U CN201062719Y CN 201062719 Y CN201062719 Y CN 201062719Y CN U2007201159932 U CNU2007201159932 U CN U2007201159932U CN 200720115993 U CN200720115993 U CN 200720115993U CN 201062719 Y CN201062719 Y CN 201062719Y
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Abstract
The utility model discloses an explosion-proof and intrinsically secure light emitting diode illuminating lamp used for mines, which relates to the secure illuminating technology of large tunnels, roadways and rooms in mines. The utility model is composed of an explosion-proof power supply box, an illuminating lamp and an illuminating control circuit. The explosion-proof power supply box comprises an outer casing, an input cable lead-in device, an output cable lead-out device, an insulating plate supporting frame, an insulating plate, a power transformer, a heat radiator, a printed circuit board support, a first printed plate for an intrinsic security transformation circuit, a second printed board of the intrinsic security transformation circuit, an output terminal, and an input terminal, etc. The illuminating lamp comprises the outer casing, a cable lead-in device, a printed circuit board for an light emitting diode component, a reflective hood, a supporting frame for the reflective hood and dustproof glass, a light emitting diode and a dustproof glass pressure board, etc. The illuminating control circuit comprises a transformer, a rectification filter circuit, a first intrinsic security circuit and a second intrinsic security circuit. As the illuminating lamp is supplied with power in an intrinsic security way, when the lamp is damaged, no explosion happens, the lamp has the advantages of long service life, small size, light weight, low energy consumption, security, reliability and convenient maintenance.
Description
Technical field:
The utility model relates to the emergency lighting technology of down-hole, mine Da Xiang, chamber.
Background technology:
At present, the illumination of common explosion-proof incandescent lamp or anti-explosion fluorescent lamp is adopted in the illumination of big lane, chamber usually under the coal mine.The deficiency that exists in the use is: 1, the light fixture energy consumption is bigger.2, use 127 volts of voltages, security is low.3, light fixture damages back appearance electric leakage easily, loses quick-fried situation.4, life-span weak point, the fault rate height, maintenance workload is big.
Summary of the invention:
In order to overcome the big lane of using now and the chamber existing deficiency of throwing light on, the utility model provides a kind of Flameproof intrinsically safe mining LED illumination lamp.Essential safety translation circuit in the utility model Flameproof box will exchange the intrinsically safe power supply that the 127V power supply is converted to low pressure, be the light-emitting diode (LED) illuminating lamp power supply, the LED energy-saving lamp tool adopts little electric current, high brightness white light-emitting diode as light source, because of every diode current is not more than 20mA, light emitting diode does not generate heat, do not need radiator, make that this lamp life is long, volume is little, in light weight.This combination lamp is the custom-designed angle reflection shield that has of light emitting diode, makes high brightness LED conversion efficiency height, and has formed design illumination zone.
The utility model is that the technical scheme that its technical problem of solution is adopted is by the flame proof power supply box, lighting and illumination control circuit constitute, the flame proof power supply box is by shell, the input cable entry, the output cable ejector, the insulation board bracing frame, insulation board, power transformer, radiator, the circuit printing plate support, one printed board of essential safety translation circuit, two printed boards of essential safety translation circuit, output wiring terminal, the input wires terminal is formed, shell is rectangular, there is the convex edge on four limits, shell upper end, be evenly equipped with a hole on the convex edge, respectively there is a circular hole case body two sides, left side circular hole internal diameter cooperates solid welding with input cable entry one end external diameter, right side circular hole internal diameter cooperates solid welding with output cable ejector one end, four fillet welding of shell inner bottom part have the insulation board bracing frame, there is a hole at its end face center, insulation board and four insulation board bracing frame surface engagement, bolting, power transformer cooperates with insulation board, bolting, radiator cooperates with insulation board, bolting, the circuit printing plate support cooperates with insulation board, bolting, one printed board of essential safety translation circuit, two printed boards of essential safety translation circuit cooperate with the circuit printing plate support, bolting, output wiring terminal, the input wires terminal cooperates with insulation board, bolting, upper cover plate is a square plate, upper surface has suspension ring, the uniform unthreaded hole in four limits, corresponding with silk hole uniform on the convex edge, shell upper end, upper cover plate cooperates with convex edge, four limits, shell upper end, bolted, respectively there is fixing feet corner, outer casing base both sides, there is unthreaded hole on the fixing feet surface, lighting is by shell, cable entry, the light-emitting diode component circuit printing plate, reflection shield, reflection shield and dustproof glass bracing frame, light emitting diode, the dustproof glass pressing plate is formed, the shell casing that is square, bottom, outer casing inner wall four limit is fixed with reflection shield and dustproof glass bracing frame, shell upper face one side has circular hole, the circular hole internal diameter cooperates fixing with the cable entry external diameter, the shell upper face cooperates with flame proof power supply box outer casing base basal surface, bolting, and light-emitting diode component circuit printing plate one side downwards is welded with vertical, horizontal each ten row, ten row light emitting diodes, reflection shield is made by the plastics that are coated with reflectorized material, be divided into and connect two groups up and down, every group by ten row the five-element constitute square reflecting shade, two groups of reflection shields are identical, mirror is to placement, with one group of top is example, at the bottom of the cover of each reflection shield circular hole is arranged, and the luminous point of each light emitting diode places paraboloidal focus in the reflection shield, the anglec of rotation difference of each reflection shield, parabolic axis is that the center is spent to anticlockwise 20.5 with parabolic focus in the reflection shield in the first row reflection shield of left side, and parabolic axis is that the center is spent to anticlockwise 16.3 with parabolic focus in the reflection shield in the secondary series reflection shield of left side, and parabolic axis is that the center is to anticlockwise 11.9 degree with parabolic focus in the reflection shield in the 3rd row reflection shield of left side, parabolic axis is that the center is to anticlockwise 7.3 degree with parabolic focus in the reflection shield in the 4th row reflection shield of left side, parabolic axis is that the center is spent to anticlockwise 2.7 with parabolic focus in the reflection shield in the 5th row reflection shield of left side, and parabolic axis is that the center is spent to right rotation 2.7 with parabolic focus in the reflection shield in the 6th row reflection shield of left side, and parabolic axis is that the center is to right rotation 7.3 degree with parabolic focus in the reflection shield in the 7th row reflection shield of left side, parabolic axis is that the center is to right rotation 11.9 degree with parabolic focus in the reflection shield in the 8th row reflection shield of left side, parabolic axis is that the center is spent to right rotation 16.3 with parabolic focus in the reflection shield in the 9th row reflection shield of left side, and parabolic axis is that the center is to right rotation 20.5 degree, on row anglec of rotation basis with parabolic focus in the reflection shield in the tenth row reflection shield of left side, parabolic axis is that the center rotates up 20.5 degree again with parabolic focus in the reflection shield in the first row reflection shield from top to down, parabolic axis is that the center rotates up 16.3 degree again with parabolic focus in the reflection shield in the second row reflection shield from top to down, and parabolic axis is that the center rotates up 11.9 degree again with parabolic focus in the reflection shield in the third line reflection shield from top to down, and parabolic axis is that the center rotates up 7.3 degree again with parabolic focus in the reflection shield in the fourth line reflection shield from top to down, parabolic axis is that the center rotates up 2.7 degree again with parabolic focus in the reflection shield in the fifth line reflection shield from top to down, dustproof glass four limit lower surfaces cooperate with the dustproof glass pressing plate, and upper surface cooperates bolting with fixing reflection shield and the dustproof glass bracing frame in the four jiaos of bottoms in reflection shield four limits and outer casing inner wall after two groups are connected; Illumination control circuit is by transformer; current rectifying and wave filtering circuit; intrinsicallysafecircuit one; intrinsicallysafecircuit two is formed; the groundwork principle: from the 127V alternating current of mine lighting comprehensive protection device input after transformer 17 step-downs; export by TL2; through rectifying block Z1 rectification; after the C1 filtering; give LED 1～LED50 power supply by intrinsicallysafecircuit one, the operation principle of intrinsicallysafecircuit one: by the 14V DC voltage of Z1 input through triode Q1; resistance R 8; triode Q4; resistance R 10; triode Q6 provides stable direct current 8V voltage for LED 1～LED50.Triode Q1, resistance R 3, triode Q2, resistance R 4, Zener diode DW1, resistance R 5, adjustable potentiometer VR1, resistance R 6 etc. are formed mu balanced circuit, its voltage stabilizing process is: when certain reason makes triode Q1 output voltage rising Δ U, the voltage Δ U that raises almost all is added on the emitter stage of triode Q2 by Zener diode DW1, the base stage of triode Q2 then is to raise by intrinsic standoff ratio, cause triode Q2 conducting electric current to reduce, triode Q1 base current reduces, triode Q1 pressure drop increases, and output voltage reduces; When certain reason makes triode Q1 output voltage reduce Δ U, the voltage Δ U that reduces makes the emitter voltage of triode Q2 almost reduce Δ U by Zener diode DW1, the base stage of triode Q2 then is to reduce by intrinsic standoff ratio, cause triode Q2 conducting electric current to increase, triode Q1 base current increases, triode Q1 pressure drop reduces, and output voltage raises; Resistance R 2, resistance R 11 are starting resistances.Resistance R 7, resistance R 16 play regulated output voltage when being zero load, triode Q3, resistance R 8, resistance R 9, triode Q4, formed current-limiting control circuit.When circuital current surpasses setting, resistance R 8 pressure drops increase, triode Q3 conducting, triode Q4 base potential raises and turn-offs, resistance R 10, triode Q5, triode Q6 have formed second level current-limiting protection circuit, and triode Q6, resistance R 12, triode Q7, resistance R 13, Zener diode DW2, resistance R 14, adjustable potentiometer VR2, resistance R 15 etc. are formed second utmost point mu balanced circuit; After transformer 17 step-downs, by TL3 output, after rectifying block Z2 rectification, C2 filtering, give LED 51～LED100 power supply by intrinsicallysafecircuit two, essential safety translation circuit two principles and essential safety translation circuit one are identical, not at repeated description.
The beneficial effects of the utility model are; The mining LED illumination lamp of Flameproof intrinsically safe is to be mine underworkings, the custom-designed a kind of lighting of chamber, because lighting is the essential safe type power supply, after lighting damages, do not lose quick-fried, this lighting have the life-span long, volume is little, in light weight, energy consumption is low, advantage such as safe and reliable and easy to maintenance, be particularly useful under the coal mine.
Description of drawings:
Fig. 1 is the utility model lighting front view,
Fig. 2 is the A-A cutaway top view of the utility model Fig. 1,
Fig. 3 is that the B-B of the utility model Fig. 2 analyses and observe left view,
Fig. 4 is the utility model flame proof power supply box C-C cutaway top view,
Fig. 5 is the utility model reflection shield front view,
Fig. 6 is the utility model reflection shield D-D cutaway top view,
Fig. 7 is that the utility model reflection shield E-E analyses and observe left view,
Fig. 8 is the utility model intrinsicallysafecircuit one schematic diagram,
Fig. 9 is the utility model intrinsicallysafecircuit two schematic diagrams.
The specific embodiment:
The utility model is by the flame proof power supply box, lighting and illumination control circuit constitute, with reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, flame proof power supply box 1 is by shell 2, input cable entry 12, output cable ejector 3, insulation board bracing frame 15, insulation board 16, power transformer 17, radiator 18, circuit printing plate support 22, one printed board 19 of essential safety translation circuit, two printed boards 21 of essential safety translation circuit, output wiring terminal 20, the input wires terminal forms 23, shell 2 is rectangular, there is the convex edge on four limits, shell 2 upper ends, be evenly equipped with a hole on the convex edge, respectively there is a circular hole case body two sides, left side circular hole internal diameter cooperates solid welding with input cable entry 12 1 end external diameters, right side circular hole internal diameter cooperates solid welding with output cable ejector 3 one ends, four fillet welding of shell inner bottom part have insulation board bracing frame 15, there is a hole at its end face center, insulation board 16 and four insulation bracing frame 15 surface engagement, bolting, power transformer 17 cooperates with insulation board 16, bolting, radiator 18 cooperates with insulation board 16, bolting, circuit printing plate support 22 cooperates with insulation board 16, bolting, one printed board 19 of essential safety translation circuit, two printed boards 21 of essential safety translation circuit cooperate with circuit printing plate support 22, bolting, output wiring terminal 20, input wires terminal 23 cooperates with insulation board 16, bolting, upper cover plate 14 is a square plate, upper surface has suspension ring 13, the uniform unthreaded hole in four limits, corresponding with silk hole uniform on the convex edge, shell 2 upper end, upper cover plate 14 cooperates with convex edge, four limits, shell 2 upper ends, bolted, respectively there is fixing feet 24 corner, shell 2 base both sides, there is unthreaded hole on fixing feet 24 surfaces, with reference to Fig. 2, Fig. 5, Fig. 6, Fig. 7, lighting 4 is by shell 10, cable entry 11, light-emitting diode component circuit printing plate 6, reflection shield 7, reflection shield and dustproof glass bracing frame 9, light emitting diode 5, dustproof glass pressing plate 25 is formed, shell 10 casing that is square, bottom, shell 10 inwalls, four limit is fixed with reflection shield and dustproof glass bracing frame 9, and shell 10 upper faces one side has circular hole, the circular hole internal diameter cooperates fixing with cable entry 11 external diameters, shell 10 upper faces cooperate with flame proof power supply box 1 shell 2 base basal surfaces, bolting, and light-emitting diode component circuit printing plate 6 one side downwards is welded with vertical, horizontal each ten row, ten row light emitting diodes 5, reflection shield 7 is made by the plastics that are coated with reflectorized material, be divided into and connect two groups up and down, every group by the ten row five-element to constitute 7, two groups of reflection shields 7 of square reflecting shade identical, mirror is to placement, with one group of top is example, at the bottom of the cover of each reflection shield 7 circular hole is arranged, and the luminous point of each light emitting diode 5 places paraboloidal focus in the reflection shield 7, the anglec of rotation difference of each reflection shield, parabolic axis is that the center is spent to anticlockwise 20.5 with parabolic focus in the reflection shield in the first row reflection shield of left side, and parabolic axis is that the center is spent to anticlockwise 16.3 with parabolic focus in the reflection shield in the secondary series reflection shield of left side, and parabolic axis is that the center is to anticlockwise 11.9 degree with parabolic focus in the reflection shield in the 3rd row reflection shield of left side, parabolic axis is that the center is to anticlockwise 7.3 degree with parabolic focus in the reflection shield in the 4th row reflection shield of left side, parabolic axis is that the center is spent to anticlockwise 2.7 with parabolic focus in the reflection shield in the 5th row reflection shield of left side, and parabolic axis is that the center is spent to right rotation 2.7 with parabolic focus in the reflection shield in the 6th row reflection shield of left side, and parabolic axis is that the center is to right rotation 7.3 degree with parabolic focus in the reflection shield in the 7th row reflection shield of left side, parabolic axis is that the center is to right rotation 11.9 degree with parabolic focus in the reflection shield in the 8th row reflection shield of left side, parabolic axis is that the center is spent to right rotation 16.3 with parabolic focus in the reflection shield in the 9th row reflection shield of left side, and parabolic axis is that the center is to right rotation 20.5 degree, on row anglec of rotation basis with parabolic focus in the reflection shield in the tenth row reflection shield of left side, parabolic axis is that the center rotates up 20.5 degree again with parabolic focus in the reflection shield in the first row reflection shield from top to down, parabolic axis is that the center rotates up 16.3 degree again with parabolic focus in the reflection shield in the second row reflection shield from top to down, and parabolic axis is that the center rotates up 11.9 degree again with parabolic focus in the reflection shield in the third line reflection shield from top to down, and parabolic axis is that the center rotates up 7.3 degree again with parabolic focus in the reflection shield in the fourth line reflection shield from top to down, parabolic axis is that the center rotates up 2.7 degree again with parabolic focus in the reflection shield in the fifth line reflection shield from top to down, dustproof glass 8 four limit lower surfaces cooperate with dustproof glass pressing plate 25, and upper surface cooperates bolting with fixing reflection shield and the dustproof glass bracing frame 9 in the four jiaos of bottoms in reflection shield 7 four limits and shell 10 inwalls after two groups are connected; With reference to Fig. 8; Fig. 9; illumination control circuit is by transformer; current rectifying and wave filtering circuit; intrinsicallysafecircuit one; intrinsicallysafecircuit two is formed; intrinsicallysafecircuit one groundwork principle: from the 127V alternating current of mine lighting comprehensive protection device input after transformer 17 step-downs; export by TL2; through rectifying block Z1 rectification; after the C1 filtering; give LED 1～LED50 power supply by intrinsicallysafecircuit one, the operation principle of intrinsicallysafecircuit one: by the 14V DC voltage of Z1 input through triode Q1; resistance R 8; triode Q4; resistance R 10; triode Q6 provides stable direct current 8V voltage for LED 1～LED50.Triode Q1, resistance R 3, triode Q2, resistance R 4, Zener diode DW1, resistance R 5, adjustable potentiometer VR1, resistance R 6 etc. are formed mu balanced circuit, its voltage stabilizing process is: when certain reason makes triode Q1 output voltage rising Δ U, the voltage Δ U that raises almost all is added on the emitter stage of triode Q2 by Zener diode DW1, the base stage of triode Q2 then is to raise by intrinsic standoff ratio, cause triode Q2 conducting electric current to reduce, triode Q1 base current reduces, triode Q1 pressure drop increases, and output voltage reduces; When certain reason makes triode Q1 output voltage reduce Δ U, the voltage Δ U that reduces makes the emitter voltage of triode Q2 almost reduce Δ U by Zener diode DW1, the base stage of triode Q2 then is to reduce by intrinsic standoff ratio, cause triode Q2 conducting electric current to increase, triode Q1 base current increases, triode Q1 pressure drop reduces, and output voltage raises; Resistance R 2, resistance R 11 are starting resistances.Resistance R 7, resistance R 16 play regulated output voltage when being zero load, triode Q3, resistance R 8, resistance R 9, triode Q4, formed current-limiting control circuit.When circuital current surpasses setting, resistance R 8 pressure drops increase, triode Q3 conducting, triode Q4 base potential raises and turn-offs, resistance R 10, triode Q5, triode Q6 have formed second level current-limiting protection circuit, and triode Q6, resistance R 12, triode Q7, resistance R 13, Zener diode DW2, resistance R 14, adjustable potentiometer VR2, resistance R 15 etc. are formed second utmost point mu balanced circuit; After transformer 17 step-downs, by TL3 output, after rectifying block Z2 rectification, C2 filtering, give LED 51～LED100 power supply by intrinsicallysafecircuit two, essential safety translation circuit two principles and essential safety translation circuit one are identical, not at repeated description.
Claims (2)
1. the mining LED illumination lamp of Flameproof intrinsically safe relates to the emergency lighting technology of down-hole, mine Da Xiang, chamber, is made of flame proof power supply box, lighting, it is characterized in that:
1). flame proof power supply box shell is rectangular, there is the convex edge on four limits, shell upper end, be evenly equipped with a hole on the convex edge, respectively there is a circular hole case body two sides, left side circular hole internal diameter cooperates solid welding with input cable entry one end external diameter, right side circular hole internal diameter cooperates solid welding with output cable ejector one end, four fillet welding of shell inner bottom part have the insulation board bracing frame, there is a hole at its end face center, insulation board and four insulation board bracing frame surface engagement, bolting, power transformer cooperates with insulation board, bolting, radiator cooperates with insulation board, bolting, and the circuit printing plate support cooperates with insulation board, bolting, one printed board of essential safety translation circuit, two printed boards of essential safety translation circuit cooperate with the circuit printing plate support, bolting, output wiring terminal, the input wires terminal cooperates with insulation board, bolting, upper cover plate is a square plate, and upper surface has suspension ring, the uniform unthreaded hole in four limits, corresponding with silk hole uniform on the convex edge, shell upper end, upper cover plate cooperates with convex edge, four limits, shell upper end, bolted, and respectively there is fixing feet corner, outer casing base both sides, there is unthreaded hole on the fixing feet surface
2). the luminaire housings casing that is square, bottom, outer casing inner wall four limit is fixed with reflection shield and dustproof glass bracing frame, shell upper face one side has circular hole, the circular hole internal diameter cooperates fixing with the cable entry external diameter, the shell upper face cooperates with flame proof power supply box outer casing base basal surface, bolting, light-emitting diode component circuit printing plate one side downwards is welded with vertical, horizontal each ten row, ten row light emitting diodes, reflection shield is made by the plastics that are coated with reflectorized material, be divided into and connect two groups up and down, every group is listed as the five-element by ten and constitutes square reflecting shade, two groups of reflection shields, mirror have circular hole to placement at the bottom of the cover of each reflection shield, the luminous point of each light emitting diode places paraboloidal focus in the reflection shield
2. the mining LED illumination lamp of Flameproof intrinsically safe according to claim 1, the anglec of rotation difference of each reflection shield, it is characterized in that, parabolic axis is that the center is to anticlockwise 20.5 degree with parabolic focus in the reflection shield in the first row reflection shield of left side, parabolic axis is that the center is to anticlockwise 16.3 degree with parabolic focus in the reflection shield in the secondary series reflection shield of left side, parabolic axis is that the center is to anticlockwise 11.9 degree with parabolic focus in the reflection shield in the 3rd row reflection shield of left side, parabolic axis is that the center is to anticlockwise 7.3 degree with parabolic focus in the reflection shield in the 4th row reflection shield of left side, parabolic axis is that the center is to anticlockwise 2.7 degree with parabolic focus in the reflection shield in the 5th row reflection shield of left side, parabolic axis is that the center is to right rotation 2.7 degree with parabolic focus in the reflection shield in the 6th row reflection shield of left side, parabolic axis is that the center is to right rotation 7.3 degree with parabolic focus in the reflection shield in the 7th row reflection shield of left side, parabolic axis is that the center is to right rotation 11.9 degree with parabolic focus in the reflection shield in the 8th row reflection shield of left side, parabolic axis is that the center is to right rotation 16.3 degree with parabolic focus in the reflection shield in the 9th row reflection shield of left side, parabolic axis is that the center is to right rotation 20.5 degree with parabolic focus in the reflection shield in the tenth row reflection shield of left side, on row anglec of rotation basis, parabolic axis is that the center rotates up 20.5 degree again with parabolic focus in the reflection shield in the first row reflection shield from top to down, parabolic axis is that the center rotates up 16.3 degree again with parabolic focus in the reflection shield in the second row reflection shield from top to down, parabolic axis is that the center rotates up 11.9 degree again with parabolic focus in the reflection shield in the third line reflection shield from top to down, parabolic axis is that the center rotates up 7.3 degree again with parabolic focus in the reflection shield in the fourth line reflection shield from top to down, parabolic axis is that the center rotates up 2.7 degree again with parabolic focus in the reflection shield in the fifth line reflection shield from top to down, dustproof glass four limit lower surfaces cooperate with the dustproof glass pressing plate, upper surface cooperates bolting with fixing reflection shield and the dustproof glass bracing frame in the four jiaos of bottoms in reflection shield four limits and outer casing inner wall after two groups are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201159932U CN201062719Y (en) | 2007-04-12 | 2007-04-12 | LED lighting lamp for flame-proof and intrinsic safety mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201159932U CN201062719Y (en) | 2007-04-12 | 2007-04-12 | LED lighting lamp for flame-proof and intrinsic safety mine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201062719Y true CN201062719Y (en) | 2008-05-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201159932U Expired - Fee Related CN201062719Y (en) | 2007-04-12 | 2007-04-12 | LED lighting lamp for flame-proof and intrinsic safety mine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201062719Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121609A (en) * | 2011-01-25 | 2011-07-13 | 大连马可尼电子仪器有限公司 | Efficient energy-efficient environmental-friendly intrinsically safe and flameproof illuminating lamp |
| CN105444054A (en) * | 2015-12-16 | 2016-03-30 | 浙江瑞工电气科技有限公司 | Explosive-proof intrinsic safety type LED (Light-Emitting Diode) tunnel lamp for mining |
-
2007
- 2007-04-12 CN CNU2007201159932U patent/CN201062719Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121609A (en) * | 2011-01-25 | 2011-07-13 | 大连马可尼电子仪器有限公司 | Efficient energy-efficient environmental-friendly intrinsically safe and flameproof illuminating lamp |
| CN105444054A (en) * | 2015-12-16 | 2016-03-30 | 浙江瑞工电气科技有限公司 | Explosive-proof intrinsic safety type LED (Light-Emitting Diode) tunnel lamp for mining |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Heilongjiang Demeng Plastic Machinery Co., Ltd. Assignor: Guan Chaosen Contract record no.: 2010230000081 Denomination of utility model: LED lighting lamp for flame-proof and intrinsic safety mine Granted publication date: 20080521 License type: Exclusive License Record date: 20101125 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080521 Termination date: 20110412 |