The explosion-proof emergency light of a kind of LEDTechnical field
The utility model relates to a kind of lighting lamp, relates in particular to a kind of explosion-proof emergency light of LED being used in inflammable, explosive place.
Background technology
Along with the develop rapidly of the industries such as oil, chemical industry, mining industry, the use of lighting in producing, store in a warehouse, rescuing is also more and more extensive.In some inflammable, explosive places, require illuminating lamp etc. to there is explosion-proof function, so-called explosion prevention function requires light fixture good seal exactly, in use avoids spark that electric current produces to contact with the gas exploding with easy burning, sets off an explosion.Because LED belongs to cold light source, its caloric value is little, so explosion-proof lamp generally all adopts LED lamp as the light source of illumination, also requires sealability of lamp good simultaneously, avoids spark and easy burning or the gas that explodes contacts.
Granted publication number is CN202769314U, and Granted publication day is that the Chinese utility model patent on March 6th, 2013 discloses a kind of emergency lighting LED explosion-proof lamp, and it comprises the cable of housing and incoming transport power supply, is provided with LED light source and control circuit in housing; Control circuit comprise AC DC modular converter, battery module, LED driver module and control module; AC DC modular converter input ac power, output direct current provides working power for other each module; Control module detect AC the voltage signal of DC output, and control battery module whether for LED drive circuit provides working power according to the voltage signal detecting and external environment illumination; Battery module is comprised of battery and battery charging circuit, battery charging circuit can utilize AC the power supply that provides of DC modular converter to charge in batteries.Reliable during this utility model application, when mains-supplied is not enough, battery can start immediately, takes on emergency power supply role, guarantees the normal operation of LED explosion-proof lamp, to ensure productive life safety.This utility model in housing, be provided with AC DC modular converter, the alternating current of input need to be changed into direct current could normally work, and to encapsulate AC DC modular converter just need larger encapsulated space, on fitting structure, just must make can encapsulate AC the die cavity of DC modular converter, will make so the outer deformation of light fixture large, whole light fixture build is large, be not easy to carry, add AC DC modular converter short service life, easily bad, use cost is higher, AC DC modular converter can a loss part electric energy when interchange is changed into direct current, caused the unnecessary waste of electric energy.
Granted publication number is CN203147580U, Granted publication day is that the Chinese utility model patent on August 21st, 2013 discloses a kind of LED explosion-proof lamp with emergency lighting, it is characterized in that: this explosion-proof lamp comprises shell, nickel-hydrogen chargeable cell group, power driving circuit, intelligent control circuit, LED light emitting diode, reflection shield, watertight panel, support, single-chip microcomputer, automatic transfer switch, charge-discharge control circuit; Shell upper bottom surface has LED light emitting diode.The utility model has the advantage of in case of after accident power-off, still can continue to throw light on that it is high to have above light efficiency 60 minutes, less energy consumption, life-span is long, the advantage of environmental protection, can not produce electric arc, spark, essential safety during operation, can make light fixture normally work under the large adverse circumstances of voltage pulsation, guarantee light fixture high security, be adapted at outdoor use, the inner integrated structure design that adopts, be conducive to abundant heat radiation, extend the LED life-span.Same this utility model is also could normally to work after need to interchange being changed into direct current by power driving circuit, can make equally the outer deformation of light fixture large, whole light fixture build is large, be not easy to carry, add power driving circuit short service life, easily bad, use cost is higher, when power driving circuit changes into direct current by interchange, meeting loss part electric energy, has caused the unnecessary waste of electric energy.And this utility model is after accident power-off, no matter be daytime or night, will throw light at once, obviously such working method can cause unnecessary illumination on daytime, has wasted electric energy, and has consumed the service life of light fixture.
In sum, above-mentioned two utility model patents in use, all need with driving power, the alternating current of input to be changed into after direct current, LED lamp pearl is luminous (as shown in Figure 1) normally, because needs arrange driving power, just must setting on light fixture can hold the die cavity of driving power, and the setting of die cavity will increase profile and the weight of light fixture greatly, make light fixture seem heavy, the complicated structure of light fixture.And while transforming alternating current with driving power, the service life of driving power is shorter, need to change driving power, has greatly improved the use cost of light fixture.Driving power is when changing into direct current by alternating current, and in the process transforming, meeting loss part electric energy, has caused the unnecessary waste of electric energy; After accident power-off, no matter be daytime or night, will throw light on, obviously such working method can cause unnecessary illumination on daytime, has wasted electric energy, and has consumed the service life of light fixture at once.
Utility model content
In order to overcome the defect of the explosion-proof emergency light of above-mentioned existing LED, the utility model provides the explosion-proof emergency light of a kind of LED, a photo resistance for the explosion-proof emergency light of this LED, gather emergency light light intensity around, only have light intensity around lower than set light intensity time, emergency light just can be connected illumination, with respect to existing emergency light, saved electric energy, simultaneously because this explosion-proof lamp does not re-use driving power, alternating current is not changed into direct current impel lamp pearl luminous, also just no longer need to arrange the die cavity that driving power is installed, greatly reduced the volume and weight of light fixture, also avoided driving power to transform the part electric energy of alternating current loss simultaneously, improved the utilization rate of electric energy, reduced the waste of electric energy, do not need to change in use driving power yet, greatly extended the service life of explosion-proof lamp.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:
The explosion-proof emergency light of a kind of LED, it is characterized in that: comprise emergency circuit, conversion circuit, shell and lamp pearl module, described emergency circuit, conversion circuit and lamp pearl module packaging are in the enclosure, described emergency circuit is in series with photo resistance, emergency power supply and emergency driving, described conversion circuit is in series with resistance and frequency modulator, described lamp pearl module is at least two groups, after the parallel connection of every group of lamp pearl module, be connected on conversion circuit and emergency circuit, every group of lamp pearl module at least comprises a Light-Emitting Diode, the Light-Emitting Diode of same group is cascaded, the energising direction of the Light-Emitting Diode of same group is identical, the energising opposite direction that has one group of lamp pearl module and other lamp pearl modules at least, conversion circuit external AC power supply.
Described shell comprises link cover of FIG, emergent cavity, lamp cavity and lamp chamber lid, and link cover of FIG is connected on emergent cavity top, and emergent cavity is connected on lamp cavity top, and lamp chamber lid is connected on lamp cavity bottom.
In described link cover of FIG, be provided with emergent window, described emergent window comprises pressing plate, packing ring, support and transparent panel, and transparent panel is clamped on support, and transparent panel below is installed described packing ring and pressing plate successively, and photo resistance 30 is fixed on pressing plate by trip bolt.
Described link cover of FIG is sealedly connected on emergent cavity top by screw, described emergent cavity is bolted on lamp cavity top, and on joint face, be provided with seal groove, in seal groove, be provided with sealing ring, the joint face of emergent cavity and lamp cavity is " Z " font joint face, and described lamp chamber lid is connected on lamp cavity bottom by thread seal.
Described link cover of FIG is provided with wiring through hole longitudinally; described link cover of FIG and secondary chamber body form secondary chamber; emergent cavity and lamp cavity form wire connection cavity; described wiring through hole is communicated with secondary chamber; in described secondary chamber, be provided with Surge Protector and binding post; described emergency power supply and emergency driving are also arranged in secondary chamber, on lamp cavity, are provided with through wires hole.Cable is introduced from wiring through hole, is connected on emergency power supply after being connected to binding post, then receives on emergency driving, is finally connected on Surge Protector, after connecting, from through wires hole, passes, and has worn after electric wire, with glue, through wires hole is sealed.
Described lamp pearl module is fixed on lamp cavity, in the surrounding of lamp pearl module, reflection shield is installed.
Described lamp chamber covers translucent cover is installed, and translucent cover is arranged on the below of lamp pearl module, and translucent cover is bonded in lamp chamber with bonding agent and covers, and is also provided with elastic washer above translucent cover.
Described lamp chamber covers and is also provided with wire guard, and wire guard is positioned at the below of translucent cover.
The utlity model has following advantage:
1, the utility model comprises emergency circuit, conversion circuit, shell and lamp pearl module, described emergency circuit, conversion circuit and lamp pearl module packaging are in the enclosure, described emergency circuit is in series with photo resistance, emergency power supply and emergency driving, described conversion circuit is in series with resistance and frequency modulator, described lamp pearl module is at least two groups, after the parallel connection of every group of lamp pearl module, be connected on conversion circuit and emergency circuit, every group of lamp pearl module at least comprises a Light-Emitting Diode, the Light-Emitting Diode of same group is cascaded, the energising direction of the Light-Emitting Diode of same group is identical, the energising opposite direction that has one group of lamp pearl module and other lamp pearl modules at least, conversion circuit external AC power supply.
The utility model with the replacement of conversion circuit driving power, conversion circuit comprises resistance and frequency modulator, installs in the enclosure, does not need to arrange specially die cavity and holds these parts.Prior art with respect to existing demand motive power supply, do not need the extra die cavity that holds driving power that arranges, greatly reduced the volume and weight of light fixture, also avoided driving power to transform the part electric energy of alternating current loss simultaneously, improved the utilization rate of electric energy, reduce the waste of electric energy, also do not needed to change in use driving power, greatly reduced the service life of explosion-proof lamp.The operation principle of conversion circuit of the present utility model is: pass into after alternating current, resistance plays a dividing potential drop effect, the fluctuation that alternating current produces is born a part by this resistance, like this, alternating current is when fluctuation, the fluctuation of lamp pearl module luminosity reduces relatively, add the effect of frequency modulator simultaneously, the alternating current that is generally 50HZ is become to the alternating current of 100HZ, under such frequency, when lamp pearl module is luminous, flicker is short interval time, naked eyes cannot be found, at all without any sensation, can not produce to human eye the sense of any discomfort.And lamp pearl module is at least two groups, and be connected in parallel in conversion circuit, every group of lamp pearl module at least comprises a Light-Emitting Diode, the Light-Emitting Diode of same group is cascaded, the energising direction of the Light-Emitting Diode of same group is identical, the energising opposite direction that has one group of lamp pearl module and other lamp pearl modules at least, when alternating current is positive voltage, have at least one group of lamp pearl module luminous, when alternating current is negative voltage, also have at least one group of lamp pearl module luminous, like this no matter be positive electricity or negative electricity, there is lamp pearl module luminous, and human eye is that impression is less than this luminous gap, like this in not demand motive power supply conversion, also can allow lamp pearl module normally luminous.The utility model emergency circuit comprises photo resistance, emergency power supply and emergency driving, described emergency power supply is connected electrically on emergency driving, emergency driving is connected electrically in described photo resistance, described photo resistance is connected electrically on lamp pearl module, when power-off, emergency power supply is emitted electricity and after emergency driving effect, is impelled lamp pearl module luminous, because photo resistance of the present utility model can be experienced the intensity of ambient light, only have light intensity lower than set light intensity time, electric current could pass through from photo resistance, connect emergency power supply, emergency driving and lamp pearl module, while only having like this light lower than setting value, lamp pearl module could be luminous, relative to existing technologies, can not have a power failure and just illuminate, when light intensity meets the demands, can luminous lighting, so by day or when light is stronger, emergency light can not throw light on, saved electric energy.
2, the utility model shell comprises link cover of FIG, emergent cavity, lamp cavity and lamp chamber lid, and link cover of FIG is connected on emergent cavity top, and emergent cavity is connected on lamp cavity top, and lamp chamber lid is connected on lamp cavity bottom.In described link cover of FIG 2, be provided with emergent window, described emergent window comprises pressing plate, packing ring, support and transparent panel, and transparent panel is clamped on support, and transparent panel below is installed described packing ring and pressing plate successively, and photo resistance 30 is fixed on pressing plate by trip bolt.Shell is sealed in all parts of light fixture in shell, and explosion-proof is good, and in the fixing emergent window of photo resistance, light intensity is experienced in photo resistance, determines whether conducting of emergency circuit, saves electric energy.
3, the utility model link cover of FIG is sealedly connected on emergent cavity top by screw, described emergent cavity is bolted on lamp cavity top, and on joint face, be provided with seal groove, in seal groove, be provided with sealing ring, the joint face of emergent cavity and lamp cavity is " Z " font joint face, and described lamp chamber lid is connected on lamp cavity bottom by thread seal.Junction good seal between each parts like this, explosion-proof is strong.
4, lamp pearl module described in the utility model is fixed on lamp cavity, in the surrounding of lamp pearl module, reflection shield is installed, and the effect of reflection shield is to provide a refraction angle, can guarantee the luminous range of exposures of lamp pearl module.
5, the utility model lamp chamber covers translucent cover is installed, and translucent cover is arranged on the below of lamp pearl module, and translucent cover is bonded in lamp chamber with bonding agent and covers, and is also provided with elastic washer above translucent cover.Translucent cover is that lucite is made, and the effect of translucent cover is guard lamp pearl module, and the effect of elastic washer is firmly translucent cover to be pressed in link cover of FIG.
6, the utility model lamp chamber covers and is also provided with wire guard, and wire guard is positioned at the below of translucent cover.It is protection translucent cover that lamp chamber covers the wire guard Main Function also arranging, and prevents that translucent cover is damaged.
Accompanying drawing explanation
Fig. 1 is the structural representation of driving power for prior art;
Fig. 2 is conversion circuit schematic diagram;
Fig. 3 is emergency circuit schematic diagram;
Fig. 4 is the utility model overall structure schematic diagram;
Fig. 5 is the structural representation after the utility model overall structure vertical profile;
Fig. 6 is emergent window structure schematic diagram.
Reference numeral 1, wiring through hole, 2, link cover of FIG, 3, bolt, 4, lamp cavity, 5, Surge Protector, 6, glue, 7, through wires hole, 8, lamp pearl module, 9, reflection shield, 10, sealing ring, 11, lamp chamber lid, 12, elastic washer, 13, bonding agent, 14, translucent cover, 15, resistance, 16, wire guard, 17, screw thread, 18, binding post, 19, frequency modulator, 20, Light-Emitting Diode, 21, cable, 22, emergent cavity, 23, emergency driving, 24, emergency power supply, 25, trip bolt, 26, pressing plate, 27, packing ring, 28, support, 29, transparency window, 30, photo resistance.
The specific embodiment
Main improvement of the present utility model is to replace driving power by conversion circuit, thereby overcome, with driving power, alternating current is changed into direct current and impels the luminous defect of Light-Emitting Diode.Increase an emergent moding circuit, whether controlled the connection of emergency power supply, thereby prevented by day the also defect of luminous waste electric energy.
Embodiment 1
As Fig. 2, Fig. 3, Fig. 4, shown in Fig. 5 and Fig. 6, conversion circuit is connected in AC power outward, in conversion circuit, be connected in series a resistance 15, lamp pearl module 8 and a frequency modulator 19, lamp pearl module has two groups, after the parallel connection of two groups of lamp pearl modules, be connected in conversion circuit, one group of lamp pearl module has a Light-Emitting Diode 20 at least, when one group of lamp pearl module has a plurality of Light-Emitting Diode, these Light-Emitting Diodes are cascaded successively, and the energising direction of these Light-Emitting Diodes is identical (just refers to that electric current can pass through smoothly from these Light-Emitting Diodes, each Light-Emitting Diode of electric weight).And the energising direction of Light-Emitting Diode in different lamp pearl modules is contrary.The direction that wherein electric current of a lamp pearl module passes through is in the present embodiment for from left to right, and the direction that the electric current of another lamp pearl module passes through is for from right to left.Such annexation, when alternating current is positive electricity, wherein a lamp pearl module conducting is luminous, another not conducting of lamp pearl module, when alternating current is negative electricity, the lamp pearl module of conducting is not luminous before, the not conducting of lamp pearl module of conducting before, no matter alternating current is positive electricity or negative electricity like this, lamp pearl module all can be luminous, but will there is like this defect of a flicker, to human eye, bring the sense of discomfort, therefore, our frequency modulator of having connected on circuit, by the effect of frequency modulator, the frequency of the 50HZ of common alternating current is brought up to 100HZ, lamp pearl module is when luminous like this, naked eyes just can not experienced light flash, can not bring having felt of discomfort to people yet.Because the fluctuation of alternating current is larger, for guard lamp pearl module, our resistance of having connected on circuit; by the dividing potential drop effect of resistance, the fluctuation of having shared alternating current, the like this fluctuation of alternating current; just can not exert an influence to lamp pearl module, burn out the Light-Emitting Diode of lamp pearl module.Increased an emergency circuit, this emergency circuit comprises photo resistance 30, emergency power supply 24 and emergency driving 23 simultaneously, and photo resistance 30, emergency power supply 24 and emergency driving 23 are cascaded.After the parallel connection of lamp pearl module, be connected on conversion circuit and emergency circuit.Because photo resistance of the present utility model can be experienced the intensity of ambient light, only have light intensity lower than set light intensity time, electric current could pass through from photo resistance, connect emergency power supply, emergency driving and lamp pearl module, while only having like this light lower than setting value, lamp pearl module could be luminous, relative to existing technologies, can not have a power failure and just illuminate, when light intensity meets the demands, be can luminous lighting, so by day or when light is stronger, emergency light can not throw light on, and has saved electric energy.
Shell comprises link cover of FIG 2, emergent cavity 22, lamp cavity 4 and lamp chamber lid 11, and link cover of FIG 2 is connected on emergent cavity 22 tops, and emergent cavity 22 is connected on lamp cavity 4 tops, and lamp chamber lid 11 is connected on lamp cavity 22 bottoms.
In described link cover of FIG 2, be provided with emergent window, described emergent window comprises pressing plate 26, packing ring 27, support 29 and transparent panel 28, transparent panel 28 is clamped on support 29, and transparent panel 28 belows are installed described packing ring 27 and pressing plate 26 successively, and photo resistance 30 is fixed on pressing plate 26 by trip bolt 25.
Described link cover of FIG 2 is sealedly connected on emergent cavity 22 tops by screw, described emergent cavity 22 is connected on lamp cavity top by bolt 3, and on joint face, be provided with seal groove, in seal groove, be provided with sealing ring 10, emergent cavity 22 is " Z " font joint face with the joint face of lamp cavity 4, and described lamp chamber lid 11 is sealedly connected on lamp cavity 4 bottoms by screw thread 17.
Described link cover of FIG 2 is provided with wiring through hole 1 longitudinally; described link cover of FIG 2 forms secondary chamber with emergent cavity 22; emergent cavity 22 forms wire connection cavity with lamp cavity 4; described wiring through hole 1 is communicated with secondary chamber; in described secondary chamber, be provided with Surge Protector 5 and binding post 18; described emergency power supply 24 and emergency driving 23 are also arranged in secondary chamber, are provided with through wires hole 7 on lamp cavity 4.Cable 21 is introduced from wiring through hole 1, is connected on emergency power supply 24 after being connected to binding post 18, then receives on emergency driving 23, is preferably connected on Surge Protector 5, after connecting, from through wires hole 7, passes, and has worn after electric wire, with glue 6, through wires hole 7 is sealed.
Described lamp pearl module 8 is fixed on lamp cavity 4, in the surrounding of lamp pearl module 8, reflection shield 9 is installed.
On described lamp chamber lid 11, translucent cover 14 is installed, translucent cover 14 is arranged on the below of lamp pearl module 8, and translucent cover 14 use bonding agents 13 are bonded on lamp chamber lid 11, are also provided with elastic washer 12 above translucent cover 14, and translucent cover 14 use lucite are made,
On described lamp chamber lid 2, be also provided with wire guard 16, wire guard 16 is positioned at the below of translucent cover 14.
Embodiment 2
The present embodiment is substantially the same manner as Example 1, different: lamp pearl module 8 has three groups, after three groups of parallel connections, is connected in conversion circuit, and wherein from left to right, the energising direction of another two groups of lamp pearl modules 8 from right to left for the energising direction of one group of lamp pearl module 8.When alternating current is positive electricity, wherein one group of lamp pearl module 8 energising conducting, luminous like this, and another two groups of lamp pearl modules 8 are not switched on, not luminous; When alternating current is negative electricity, the conducting of two of conducting groups of lamp pearl modules is not luminous before, and the not conducting of lamp pearl module of conducting is before not luminous.In the present embodiment, the Light-Emitting Diode 20 of every group has two at least.
Embodiment 3
The present embodiment is substantially the same manner as Example 1, different: lamp pearl module 8 has four groups, after four groups of parallel connections, is connected in conversion circuit, and wherein from left to right, the energising direction of another three groups of lamp pearl modules 8 from right to left for the energising direction of one group of lamp pearl module 8.When alternating current is positive electricity, wherein one group of lamp pearl module 8 energising conducting, luminous like this, and another three groups of lamp pearl modules 8 are not switched on, not luminous; When alternating current is negative electricity, the conducting of three of conducting groups of lamp pearl modules is not luminous before, and the not conducting of lamp pearl module of conducting is before not luminous.In the present embodiment, the Light-Emitting Diode 20 of every group has four at least.
Embodiment 4
The present embodiment is substantially the same manner as Example 1, different: lamp pearl module 8 has four groups, after four groups of parallel connections, is connected in conversion circuit, and wherein from left to right, the energising direction of another two groups of lamp pearl modules 8 from right to left for the energising direction of two groups of lamp pearl modules 8.When alternating current is positive electricity, wherein two groups of lamp pearl module 8 energising conductings, luminous like this, and another two groups of lamp pearl modules 8 are not switched on, not luminous; When alternating current is negative electricity, the conducting of two of conducting groups of lamp pearl modules is not luminous before, and the not conducting of two groups of lamp pearl modules of conducting is before not luminous.In the present embodiment, the Light-Emitting Diode 20 of every group has eight at least.
Embodiment 5
The present embodiment is substantially the same manner as Example 1, different: lamp pearl module 8 has eight groups, after eight groups of parallel connections, is connected in conversion circuit, and wherein from left to right, the energising direction of another four groups of lamp pearl modules 8 from right to left for the energising direction of four groups of lamp pearl modules 8.When alternating current is positive electricity, wherein four groups of lamp pearl module 8 energising conductings, luminous like this, and another four groups of lamp pearl modules 8 are not switched on, not luminous; When alternating current is negative electricity, the conducting of four of conducting groups of lamp pearl modules is not luminous before, and the not conducting of four groups of lamp pearl modules of conducting is before not luminous.In the present embodiment, the Light-Emitting Diode 20 of every group has ten at least.
Principle of the present utility model is as follows:
Cable 21 enters the secondary chamber being formed by link cover of FIG 2 and emergent cavity 22 by the wiring port 1 in link cover of FIG 2, in secondary chamber, be provided with binding post 18, Surge Protector 5, emergency power supply 24 and emergency driving 23, after cable 21 access binding posts 18, be connected on emergency power supply 24, then be connected on emergency driving 23, finally be connected on Surge Protector 5, join with lamp pearl module 8 again, lamp cavity 4 is provided with through wires hole 7, through wires hole is used for wearing cable 21, after threading, with glue 6, through wires hole 7 is sealed, lamp pearl module 8 is provided with reflection shield 9, reflection shield 9 has refraction angle, can guarantee the range of exposures of lamp pearly-lustre.Lamp pearl module 8 circuit have frequency modulator 19, frequency 50HZ can be adjusted to 100HZ, so general human eye can not felt the flicker of lamp when lamp is bright.Lamp pearl module 8 is fixed on lamp cavity 4 with the screw with bullet pad after being compressed by reflection shield 9, lamp chamber lid 11 is provided with translucent cover 14, with lucite, make, bonding push down with circlip 12 afterwards, lamp chamber covers and is provided with screw thread 17, and lamp cavity is provided with screw thread 17 and seal groove, the built-in sealing ring 10 of seal groove, after assembling, play sealing locking effect, lamp chamber lid 11 and lamp cavity 4 are screw thread 17 flame proofs.Lamp cavity 4 and link cover of FIG 2 are seam flame proof, are to be fixedly connected with bolt 3 specifically, and link cover of FIG 2 is provided with seal groove and seam, and the built-in sealing ring 10 of seal groove, with sealing locking after the screw assembling with plain cushion and bullet pad, is seam flame proof.
Lamp chamber lid 11 is provided with wire guard 16, can protect light fixture translucent cover 14 not to be impacted and damage.